1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.27 relative to 1.0.26:
3 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
4 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
5 * bug fix: a type error is signaled for attempts to use the LOOP
6 keyword ACROSS for a NIL value. (thanks to Daniel Lowe)
7 * bug fix: fix gc related interrupt handling bug on ppc (regression from
8 1.0.25.37, reported by Harald Hanche-Olsen)
9 * bug fix: work around signal delivery bug in darwin (regression from
10 1.0.25.44, reported by Sidney Markowitz)
12 changes in sbcl-1.0.26 relative to 1.0.25:
13 * incompatible change: an interruption (be it a function passed to
14 INTERRUPT-THREAD or a timer function) runs in an environment where
15 interrupts can be enabled. The interruption can use
16 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
17 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
18 potentially running out of stack. Keep in mind that in the absence
19 of WITHOUT-INTERRUPTS some potentially blocking operation such as
20 acquiring a lock can enable interrupts.
21 * incompatible change: GC-OFF and GC-ON are removed, as they were
22 always unsafe. Use WITHOUT-GCING instead.
23 * new feature: runtime option --disable-ldb
24 * new feature: runtime option --lose-on-corruption to die at the
25 slightest hint of possibly non-recoverable errors: running out of
26 memory, stack, alien stack, binding stack, encountering a memory
27 fault, etc. In the absence of --lose-on-corruption a warning is
29 * enhancement: detect binding stack exhaustion
30 * enhancement: detect alien stack exhaustion on x86/x86-64
31 * improvement: generally more stable and reliable interrupt handling
32 * improvement: there is a per thread interruption queue,
33 interruptions are executed in order of arrival
34 * improvement: a repeating timer reschedules itself when the it has
35 finished, but expiration times are spaced equally. If an
36 expiration time is in the past it will trigger after a short grace
37 period that may give a chance to other things to run.
38 * optimization: slightly faster gc on multithreaded builds
39 * optimization: faster WITHOUT-GCING
40 * bug fix: when JOIN-THREAD signals an error, do it when not holding
41 important locks so that the debugger/handler doesn't produce
42 recursive errors or deadlock.
43 * bug fix: real-time signals are not used anymore, so no more
44 hanging when the system wide real-time signal queue gets full.
45 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
47 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
48 * bug fix: fix random memory faults related to interrupts on alpha
49 * bug fix: fix random memory faults related to interrupts on sparc
50 * bug fix: fix deadlocks related to starting threads
51 * bug fix: fix deadlines on locks on futex platforms
52 * bug fix: restore errno in signal handlers
53 * bug fix: fix deadlocks related to hash tables
54 * bug fix: fix deadlocks in pcl
56 changes in sbcl-1.0.25 relative to 1.0.24:
57 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
58 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
59 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
60 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
61 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
62 better name and does not return values so stale on multiprocessor systems.
63 Also, HOLDING-MUTEX-P was added for about the only sane usage of
65 * improvement: unithread builds keep track of MUTEX-VALUE.
66 * improvement: reading from a TWO-WAY-STREAM does not touch the output
67 stream anymore making it thread safe to have a concurrent reader and
68 a writer, for instance, in a pipe.
69 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
70 arguments, making compiler-macros for SETF-functions able to inspect
71 their constant arguments.
72 * improvement: COMPILE-FILE reports times with millisecond accuracy
73 (thanks to Luis Oliveira)
74 * optimization: CHAR-CODE type derivation has been improved, making
75 TYPEP elimination on subtypes of CHARACTER work better. (reported
76 by Tobias Rittweiler, patch by Paul Khuong)
77 * bug fix: setting alien structure fields of type struct by value now
78 computes the right offset for the memory copy.
79 * bug fix: compilation problem involving inlined calls to aliens with
80 result type VOID. (reported by Ken Olum)
81 * bug fix: #235a; sequential inline expasion in different policies no
82 longer reuses the functional from the previous expansion site.
83 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
84 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
85 * bug fix: named ENUMs in multiply-referenced alien record types no longer
86 cause an implied type redefinition. Regression from 1.0.21.29.
87 * bug fix: sign-extension of small signed return values now works with C
88 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
89 * improvements to the Windows port:
90 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
91 Westfold, thanks to Rudi Schlatte)
93 changes in sbcl-1.0.24 relative to 1.0.23:
94 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
95 vector of a multidimensional SIMPLE-ARRAY.
96 * new feature: the system now signals a continuable error if standard
97 readtable modification is attempted. (thanks to Tobias Rittweiler)
98 * new feature: DIRECTORY has been extended with a non-standard keyword
99 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
100 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
101 has been robustified and documented better. (thanks to Robert Goldman)
102 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
103 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
104 * tradeoff: constant FORMAT control strings are now compiled unless
105 SPACE > SPEED (previously only when SPEED > SPACE.)
106 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
108 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
110 * bug fix: lexical type declarations are now correctly reported by
111 SB-CLTL2. (reported by Larry D'Anna)
112 * bug fix: STRING-TO-OCTETS did not handle :START properly when
113 using UTF-8 as external format. (thanks to Luis Oliveira)
114 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
115 are signalled correctly. (thanks to Stas Boukarev)
116 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
117 designator. (thanks to Tobias Rittweiler)
118 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
119 designator, and returns T instead of the function. (thanks to
121 * bug fix: direct superclasses of STANDARD-CLASS and
122 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
123 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
124 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
125 when no class with the named slot yet exists no longer causes a
126 compile-time style-warning.
127 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
128 in safe code. (reported by Didier Verna)
129 * bug fix: #430; nested structure constructors can stack allocate.
130 * bug fix: on some 64-bit platforms dynamic space size was truncated
131 to #xffff0000 bytes. (reported by Benjamin Lambert)
132 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
133 REPL unusable. (reported by Daniel Herring)
134 * bug fix: return values of READ-SEQUENCE did not take :START into
135 account on file streams, regressions since 1.0.12.22. (reported by
136 Thomas Russ, patch by Paul Khuong)
137 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
138 method specializer used to confuse permuation vector optimization.
139 * bug fix: system inserted bogus implicit type declarations for local
140 special variables in DEFMETHOD bodies.
141 * bug fix: #354; duplicated frames in backtraces due to
142 non-tail-call-optimized XEPs to functions with return type NIL
144 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
145 initializes structure object slots according to DEFSTRUCT initforms,
146 and DEFSTRUCT forms :INCLUDEind structure classes defined using
147 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
148 (reported by Bruno Haible and Stephen Wilson)
149 * bug fix: #395; fill-pointer output streams used now support
150 element-type BASE-CHAR as well.
151 * bug fix: compiler error when attempting to derive return value of
152 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
154 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
156 * bug fix: Mac OS X binaries should now be portable between Leopard
159 changes in sbcl-1.0.23 relative to 1.0.22:
160 * enhancement: when disassembling method functions, disassembly
161 for the associated fast function is also produced.
162 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
164 * optimization: printing with *PRINT-PRETTY* true is now more
165 efficient as long as the object being printed doesn't require
166 special handling by the pretty printer.
167 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
168 now interact correctly with type declarations.
169 * partial bug fix: PCL detects infinite recursion during wrapper
170 validation. (thanks to Attila Lendvai)
171 * bug fix: #426; nested function calls are inlined properly.
172 Previously if FOO was an inline function, in calls of the form
173 (FOO (FOO ...)) the outer call was not inlined.
174 * bug fix: long long arguments passed in registers to alien
175 functions on PowerPC Linux and NetBSD are now handled correctly
176 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
178 changes in sbcl-1.0.22 relative to 1.0.21:
179 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
180 for the shared object in the current directory, but passes the native
181 namestring of the designated pathname to the operation system's shared
182 object loading function as-it.
183 * minor incompatible change: --disable-debugger toplevel option now takes
184 effect before processing of initialization files and --eval or --load
186 * new feature: new commandline argument: --script, which supports
187 shebang lines. See documentation for details. (based on work by
189 * new feature: SAVE-LISP-AND-DIE can save current values of
190 --dynamic-space-size and --control-stack-size in the executable core,
191 causing it to skip normal runtime option processing. See documentation
192 for details. (thanks to Zach Beane)
193 * enhancement: inoccous calls to EVAL or generic functions dispatching
194 on subclasses of eg. STREAM no longer cause compiler notes to appear.
195 * enhancement: the system no longer resignals errors from --load and
196 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
197 associated with the original error to be lost. (thanks to Ariel
199 * enhancement: :DONT-SAVE keyword argument has been added to
200 LOAD-SHARED-OBJECT for controlling interaction with
201 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
202 the effects of an earlier LOAD-SHARED-OBJECT call.
203 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
204 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
205 provided. (reported by Cedric St-Jean)
206 * bug fix: circularity handling in the reader did not treat raw
207 structure slots correctly. (reported by Cedric St-Jean)
208 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
209 file descriptors when there were none.
210 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
211 was broken. (reporteed by Willem Broekema)
212 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
213 pathnames without a directory.
214 * bug fix: COMPILE-FILE did not warn about undefined variable
215 references at toplevel, and LOAD of the resulting fasl did
217 * bug fix: functions with non-required arguments used to end up with
218 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
219 * bug fix: redefining a function with non-required arguments didn't
220 update the system's knowledge about its call signature properly.
221 * bug fix: fixed #431; incompatible alien record type redefinitions
222 are detected and handled. (reported by Neil Haven)
223 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
224 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
226 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
227 after alien stack frames.
228 * bug fix: strings passed to mk{s,d}temp lacked null termination
230 changes in sbcl-1.0.21 relative to 1.0.20:
231 * new feature: the compiler is able to track the effective type of a
232 generic function across method addition and removal.
233 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
234 appropriately typed structure slots without locking.
235 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
236 information like those gathered by TIME using a programming-friendly
238 * new feature: TIME reports time taken even if the form performs a
239 non-local transfer of control.
240 * enhancement: reduced conservativism on GENCGC platforms: on
241 average 45% less pages pinned (measured from SBCL self build).
242 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
243 mutate constant symbols or violate declaimed type of the symbol.
244 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
245 sleeping on the semaphore in heavily contested semaphores.
246 * bug fix: semaphores and condition variables were not interrupt
248 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
249 owned by other threads anymore.
250 * bug fix: FIND on lists called KEY outside the specified
251 subsequence. (reported by budden)
252 * bug fix: LOG doesn't use single-float intermediate results when
253 given mixed integer and double-float arguments, leading to better
254 precision. (reported by Bob Felts)
255 * bug fix: LOG with base zero returned values of inconsistent type.
257 changes in sbcl-1.0.20 relative to 1.0.19:
258 * minor incompatible change: OPTIMIZE qualities
259 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
260 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
261 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
262 * documentation: some slot access efficiency guidelines have been
263 added to the user manual.
264 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
265 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
266 as ASSOC and MEMEBER.
267 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
268 to more efficient EQ-comparison versions more often.
269 * optimization: enhanced derivation of DOLIST iteration variable type
271 * optimization: constant folding of simple (LIST ...) forms as DOLIST
273 * optimization: runtime lookup of function definitions can be
274 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
275 * optimization: compiler is able to derive the return type of
276 (AREF (THE STRING X) Y) as being CHARACTER.
277 * optimization: CLRHASH on empty hash-tables no longer does pointless
278 work. (thanks to Alec Berryman)
279 * optimization: REPLACE deftransforms don't punt when :START1 or
281 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
282 no longer emits a code deletion note. (reported by Andrew
284 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
285 functions with an odd number of &OPTIONAL arguments, a &REST
286 argument, and one or more &KEY arguments at the call site.
287 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
288 arguments appeared at call sites as well.
289 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
290 READ-LINE &co can no longer read from them afterwards. (reported
292 * bug fix: fixed #427: unused local aliens no longer cause compiler
293 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
295 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
296 alien-stack leakage. (reported by Andy Hefner)
297 * bug fix: PROGV signals an error when an attempt to violate declared
298 type of a variable or bind a constant is made.
299 * bug fix: SET signals an error when an attempt to violate declared
300 type of a variable is made.
301 * bug fix: restart computation during the execution of a restart
302 test function no longer causes infinite recursion. (reported by
304 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
305 signals an error. (thanks to Pierre Mai)
306 * bug fix: EXPORT left symbol unexported in conflict situations.
307 (thanks to Michael Weber)
308 * bug fix: correctly handle name conflicts involving CL:NIL.
309 (thanks to Michael Weber)
310 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
311 conflicts arising from USEing package with conflicting symbols
312 correctly. (thanks to Michael Weber)
314 changes in sbcl-1.0.19 relative to 1.0.18:
315 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
316 warnings that go otherwise unhandled will be muffled if they are
317 of the type that's the value of this variable.
318 * optimization: stack allocation is slightly more efficient on x86
320 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
321 where a raw slot always is initialized using the initform whose
322 type is not know sufficiently well a compile-time are now compiled
323 correctly. (reported by John Morrison)
324 * bug fix: compiler no longer makes erronous assumptions in the
325 presence of non-foldable SATISFIES types.
326 * bug fix: stack analysis missed cleanups of dynamic-extent
327 arguments in non-let-converted calls to local functions.
328 * improvements to the Windows port:
329 ** adjusted address spaces for building on both Win32 and
330 Win64. (thanks for John Connors)
331 * fixed some bugs revealed by Paul Dietz' test suite:
332 ** interval arithmetic during type derivation used inexact integer
333 to single-float coercions.
334 ** arithmetic operations involving large integers and single
335 floats give the same results in compiled and interpreted code.
336 ** deriving the result type of COERCE no longer signals an error
337 if the derived type of the second argument is a MEMBER type
338 containing invalid type specifiers.
339 ** ADJOIN with constant NIL as second argument works correctly.
340 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
342 changes in sbcl-1.0.18 relative to 1.0.17:
343 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
344 profiles only the current thread.
345 * minor incompatible change: changes to SYMBOL-VALUE of constants
346 defined with DEFCONSTANT now signal an error.
347 * enhancement: SB-SPROF now has support for wallclock profiling,
348 and is also able to profile specific threads. REPORT output
349 has also additional sorting options.
350 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
352 * optimization: structure allocation has been improved
353 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
354 ** out of line constructors are ~10% faster.
355 ** inline constructors are ~15% faster.
356 ** inline constructors are capable of dynamic extent allocation
357 (generally on x86 and x86-64, in some cases on other platforms
359 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
361 * optimization: file compiler is now able to coalesce non-circular
362 lists, non-base strings, and bit-vectors. Additionally, constants
363 are never referenced through SYMBOL-VALUE at runtime.
364 * optimization: code defining methods on PRINT-OBJECT (and other
365 generic functions in the COMMON-LISP package) now loads faster.
366 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
368 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
369 fasl is now deleted. (reported by Attila Lendvai)
370 * bug fix: READ-LINE always returned NIL for the last line in files.
371 (reported by Yoshinori Tahara)
372 * bug fix: more accurate disassembly annotations of foreign function
373 calls. (thanks to Andy Hefner)
374 * bug fix: trimming non-simple strings and non-string string
375 designators when the there is nothing to trim works properly.
376 (thanks to James Knight)
377 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
378 (thanks to Travis Cross)
379 * fixed some bugs revealed by Paul Dietz' test suite:
380 ** NIL is a valid function name (regression at 1.0.13.38)
381 ** FILL on lists was missing its return value (regression at 1.0.12.27)
382 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
383 fill pointers properly (regression at 1.0.12.23)
384 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
385 displacement indices properly (regression at 1.0.12.23)
387 changes in sbcl-1.0.17 relative to 1.0.16:
388 * temporary regression: user code can no longer allocate closure
389 variable storage on stack, due to bug 419 without explicitly
390 requesting it. Please consult sbcl-devel for advice if you need to
391 use this feature in the meanwhile.
392 * new feature: runtime argument --control-stack-size can be used to
393 adjust thread default control stack size.
394 * enhancement: improved TIME output
395 ** all times are reported using the measured accuracy (milliseconds
396 for real and GC times, microseconds for everything else.)
397 ** processor cycle counts on x86 and x86-64.
398 ** interpreted forms are counted for both evaluator modes.
399 ** number of lambdas converted by the compiler is reported.
400 ** CPU percentage report (computed from real and total run time.)
401 ** more comprehensive run time reporting, using a condenced format
402 ** interperted form, lambda, and page fault counts are omitted
404 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
406 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
407 * optimization: two argument forms of LAST are upto ~10% faster
408 in normal SPEED policies.
409 * optimization: NCONC no longer needs to heap cons its &REST list
410 in normal SPEED policies.
411 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
413 * bug fix: UNION and NUNION work with :TEST-NOT once more,
414 regression since 1.0.9.1. (thanks to Eric Marsden)
415 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
416 since 1.0.15.36. (thanks to Paul Khuong)
417 * bug fix: LAST when always returned the whole list when given a bignum
418 as the second argument.
419 * bug fix: dynamic extent allocation of nested lists and vectors
420 could leak to otherwise accessible parts.
421 * bug fix: invalid optimization of heap-allocated alien variable
423 * bug fix: fasl header checking is less vulnerable to different
424 platform word lengths.
425 * bug fix: more correct assembler syntax for GNU binutils
426 2.18.50.0.4 support. (thanks to Marijn Schouten)
427 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
429 * bug fix: the fopcompiler can handle LOCALLY forms (with no
430 declarations) successfully. (reported by Attila Lendvai)
432 changes in sbcl-1.0.16 relative to 1.0.15:
433 * minor incompatible change: revert the changes to sb-posix's error
434 signaling added in 1.0.14.
435 * minor incompatible change: change PROBE-FILE back to returning
436 NIL whenever we can't get a truename, as was the case before 1.0.14.
437 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
438 inherits from ERROR instead of just CONDITION.
439 * new feature: SB-INTROSPECT can provide source locations for instances
440 as well. (thanks to Tobias Rittweiler)
441 * optimization: binding special variables now generates smaller code
442 on threaded platforms.
443 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
444 and cases where no :TEST is given but the compiler can infer that
445 the element to search is of type (OR FIXNUM (NOT NUMBER)).
446 * optimization: better LOGNOT on fixnums.
447 * optimization: modular arithmetic for a particular requested width
448 is implemented using a tagged representation unless a better
449 representation is available.
450 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
451 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
452 for wellformedness and returns a specialized vector. (reported by
453 Francois-Rene Rideau)
454 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
455 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
456 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
457 unscheduling timer at the same time as another timer fires.
458 * bug fix: don't reschedule timers for dead threads.
459 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
460 * bug fix: copying output from RUN-PROGRAM to a stream signalled
461 bogus errors if select() was interrupted.
462 * enhancement: add support for fcntl's struct flock to SB-POSIX.
464 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
465 * enhancement: cleaner backtraces for interactive interrupts, as
466 well as other cases where the interesting frames used to be
467 obscured by interrupt handling frames.
468 * enhancement: untracing a whole package using (UNTRACE "FOO") is
469 now supported, and tracing a whole package using (TRACE "FOO") now
470 traces SETF-functions as well.
471 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
472 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
473 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
474 * unreadably printed representation of hash-tables now includes
476 * bug fix: partially fixed #188: type propagation from assignments
477 is now more efficient.
478 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
479 'DOUBLE-FLOAT) are not flushable.
480 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
481 full address of the object, and none of the tag bits.
482 * bug fix: readably printing hash-tables now respects other printer
483 control variables. (reported by Cedric St-Jean)
484 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
485 keyword with MAKE-HASH-TABLE.
486 * bug fix: export SB-POSIX:MKSTEMP.
487 * bug fix: SORT was not interrupt safe.
488 * bug fix: XREF accounts for the last node of each basic-block as
490 * bug fix: MAKE-INSTANCE optimizations interacted badly with
491 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
492 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
493 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
494 create obsolete instances in the case of redefinition or
495 obsoletion of a superclass. (thanks to Andy Hefner)
496 * bug fix: Support for the Alpha architecture has been revived; it had
497 suffered somewhat from lack of maintenance since sbcl-1.0.
498 * improvements to the Windows port:
499 ** The system detects the codepage to use at startup, instead of
500 using the value from the saved core. (thanks to Kei Suzuki)
502 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
503 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
504 (see documentation for details.)
505 * revived support for OpenBSD (contributed by Josh Elsasser)
506 * partially fixed bug #108: ROOM no longer suffers from occasional
507 (AVER (SAP= CURRENT END)) failures.
508 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
509 bodies no longer cause a WARNING to be signalled. (reported by
511 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
512 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
513 the bug in TRUNCATE.) (reported by Michael Weber)
514 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
515 no samples. (reported by Andy Hefner)
516 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
517 no longer appear as (NIL ...) frames in backtraces.
518 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
519 is now actually exported from SB-EXT as documented. (reported by
521 * bug fix: sb-aclrepl now correctly understands how to inspect
522 single-floats on 64-bit platforms where single-floats are not boxed.
523 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
524 yet been finalized. (reported by Levente Meszaros)
525 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
526 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
527 SBCL-specific optimize qualities.
529 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
530 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
531 an executable in the search path, and does so in the child
532 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
533 been removed; it can be found in the CVS history, for somebody who
534 needs that search behavior (see the manual).
535 * minor incompatible change: compiler policy re. weakening type
536 checks has changed: now type checks are weakened only if SAFETY < 2
538 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
539 unparsing of directory pathnames as files. Analogously,
540 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
541 filename to parse into a directory pathname.
542 * enhancement: implicit generic function creation now signals a
543 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
544 users can bind handlers for and muffle around calls to LOAD.
545 * enhancement: RUN-PROGRAM allows unicode arguments and environments
546 to be used (using the default stream external format), and allows
547 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
548 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
549 strings and vectors whose element-type or simplicity is not fully
550 known at compile-time.
551 * optimization: STRING-TRIM and related functions no longer allocate
552 a new string when no trimming needs to be performed. These functions
553 are also faster than before when the input string has been declared
555 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
556 * optimization: READ-LINE is significantly faster for files containing
558 * optimization: non-open coded uses of character comparison operators
559 (e.g. char=) no longer cons when called with more than one parameter
560 on platforms supporting dynamic-extent allocation.
561 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
562 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
563 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
565 * bug fix: some sequence functions elided bounds checking when
567 * bug fix: too liberal weakening of union-type checks when SPEED >
569 * bug fix: more bogus fixnum declarations in ROOM implementation
572 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
573 * new feature: MAKE-HASH-TABLE now experimentally accepts a
574 :SYNCHRONIZED argument, which makes the hash-table safe for
575 concurrent accesses (but not iteration.) See also:
576 SB-EXT:WITH-LOCKED-HASH-TABLE, and
577 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
578 * optimization: CONCATENATE on strings is an order of magnitude faster
579 in code compiled with (> SPEED SPACE).
580 * optimization: SUBSEQ is ~50% faster on lists.
581 * bug fix: bug 417 fixed -- source location reporting is now more robust.
582 * bug fix: SUBSEQ on a list will now correctly signal an error if if
583 END is smaller then START.
584 * bug fix: SB-PROFILE will no longer report extra consing for nested
585 calls to profiled functions.
586 * bug fix: ROOM implementation had bogus fixnum declarations which
587 could cause type-errors when calling ROOM on large images.
588 * bug fix: if file compilation is aborted, the partial fasl is now
589 deleted, and COMPILE-FILE returns NIL as the primary value.
590 * bug fix: number of thread safety issues relating to SBCL's internal
591 hash-table usage have been fixed.
592 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
593 be returned from its body when the values were being returned
594 using unknown-values return convection and the W-P-O was wrapped
595 inside an UNWIND-PROTECT.
596 * bug fix: sb-posix should now compile again under Windows, enabling
599 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
600 * incompatible change: hash-table accessor functions are no longer
601 automatically protected by locks. Concurrent accesses on the same hash-table
602 from multiple threads can give inconsistent results or even corrupt the
603 hash-table completely. Multi-threaded applications should do their own
604 locking at the correct granularity. In the current implementation it is
605 still safe to have multiple readers access the same table, but it's not
606 guaranteed that this property will be maintained in future releases.
607 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
608 and will signal an error at runtime.
609 * enhancement: SB-THREAD package now exports a semaphore interface.
610 * enhancement: CONS can now stack-allocate on x86 and
611 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
613 * enhancement: nested lists can now be stack allocated on
614 platforms providing stack allocation support.
615 * enhancement: dynamic-extent support has been extended to support
616 cases where there are multiple possible sources for the stack
618 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
619 if the mutex is uncontested on Linux.
620 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
621 as specified by the CLHS. (thanks to Tobias Rittweiler)
622 * bug fix: NaN comparison now works on x86-64.
623 * bug fix: CLOSE :ABORT T on a stream with pending output now
625 * bug fix: instances of non-standard metaclasses using standard
626 instance structure protocol sometimes missed the slot type checks
628 * bug fix: known functions can be inlined in high-debug code.
630 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
631 * minor incompatible change: the MSI installer on Windows no longer
632 associates .lisp and .fasl files with the installed SBCL.
633 * minor incompatible change: :UNIX is no longer present in *FEATURES*
634 on Windows. (thanks to Luis Oliviera)
635 * new feature: SB-CLTL2 contrib module now implements
636 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
637 * optimization: scavenging weak pointers is now more efficient,
638 requiring O(1) instead of O(N) per weak pointer to identify
639 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
640 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
641 method bodies using constant slot-names when the first argument is
642 a specializer parameter for the method.
643 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
644 names, when the class of the instance is a direct instance
645 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
646 as slow as the constant slot-name case.)
647 * optimization: member type construction is now O(N) instead
649 * optimization: UNION and NUNION are now O(N+M) for large
650 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
652 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
653 now more readable in environments like Slime which display it.
654 (thanks to Tobias C. Rittweiler)
655 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
656 was able to infer the correct argument type for the object on which
657 the CAS operation was being performed.
658 * bug fix: copy propagation interfered with parallel assignment
659 semantics in local calls. (reported by Paul Khuong)
660 * bug fix: the signed modular fixnum shift compiled to wrong code on
661 x86 and x86-64. (spotted by a slight modification to some of
664 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
665 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
666 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
667 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
669 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
670 and generic function now print the object identity for anonymous
671 instances. (thanks to Attila Lendvai)
672 * enhancement: as an extension to MOP, SBCL now supports SETF of
673 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
674 (thanks to Attila Lendvai)
675 * enhancement: sb-cover has an alternate annotation mode which puts
676 the form annotations at the car of the form, instead of annotating
677 it completely. The benefit of this mode is that it shows better
678 which forms were instrumented by the compiler.
679 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
680 by printer control variables. (reported by Dan Corkill)
681 * bug fix: system leaked memory when delayed output was performed by
682 the OS in smaller chunks then expected. (thanks to David Smith)
683 * bug fix: system leaked memory when file streams were not closed
685 * bug fix: large objects written to slow streams that were modified
686 after the write could end up with the modified state written to
687 the underlying file descriptor.
688 * bug fix: multiple threads operating in parallel on the same stream
689 could cause buffer-overflows.
690 * bug fix: source location information is stored correctly
691 (broken since 1.0.6). This bug would generally show up as the
692 Slime debugger highlighting the wrong form when the sldb-show-source
694 * bug fix: Branch forms are again annotated as branches in the sb-cover
696 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
697 on x86-64. (reported by Gregory Vanuxem)
698 * bug fix: EQUALP could return wrong results for structures with raw
699 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
700 word). (reported by Vjacheslav Fyodorov)
701 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
704 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
705 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
706 atomic compare-and-swap operations on threaded platforms.
707 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
708 allows assigning a global minimum value to optimization qualities
709 (overriding proclamations and declarations).
710 * enhancement: closed over variables can be stack-allocated on x86
712 * performance bug fix: GETHASH and (SETF GETHASH) are once again
714 * optimization: slot definition lookup is now O(1). This speeds up
715 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
716 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
717 * optimization: ASSOC and MEMBER can now be open-coded for all
718 combinations of keyword arguments when second argument is constant
719 and SPEED >= SPACE. In other cases a specialized version is
721 * bug fix: using obsoleted structure instances with TYPEP and
722 generic functions now signals a sensible error.
723 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
724 (reported by Kristoffer Kvello)
725 * bug fix: backtrace construction is now more careful when making
726 lisp-objects from pointers on the stack, to avoid creating bogus
727 objects that can be seen by the GC.
728 * bug fix: defaulting of values in contexts expecting more than 7
729 variables now works on x86-64. (reported by Christopher Laux)
730 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
732 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
733 as the property-list of a symbol.
734 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
735 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
736 situations requested, are once again file-compileable. (reported
739 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
740 * MOP improvement: support for user-defined subclasses of
741 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
742 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
743 the expansion of DEFMETHOD, is responsible for generating a form
744 which creates a list of specializers when evaluated. Additional
745 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
746 debugging and introspective support.
747 * minor incompatible change: the (unsupported) spinlock interface
748 has changed: free spinlock now has the value NIL, and a held spinlock
749 has the owning thread as its value.
750 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
751 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
753 * enhancement: name of a socket-stream is now "a socket" instead of
755 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
756 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
757 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
758 for generic functions. (Thanks to Tobias C. Rittweiler)
759 * optimization: bignum printing speed has been improved by 20-40%
760 (depending on the bignum size.)
761 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
763 * bug fix: the cache used by the CLOS to store precomputed effective
764 methods, slot offsets, and constant return values is now thread and
766 * bug fix: generic function dispatch function updating is now thread
767 and interrupt safe (in the sense that the known issues have been
769 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
770 * bug fix: interning EQL-specializers is now thread and interrupt safe.
771 * bug fix: asdf systems with dependencies to the SB-POSIX or
772 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
773 * bug fix: interrupt safety of applicable method computation has been
776 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
777 * new contrib: sb-cover, an experimental code coverage tool, is included
779 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
780 significantly faster.
781 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
782 produce more efficient code on x86-64 if the compiler can determine
783 that (+ INDEX <constant>) does not require a bounds check and FOO
784 has an element type at least 8 bits wide.
785 * enhancement: a new, experimental synchronous timeout facility is
786 provided. Refer to SB-SYS:WITH-DEADLINE for details.
787 * enhancement: when a symbol name conflict error arises, the
788 conflicting symbols are always printed with a package prefix.
789 (thanks to Kevin Reid)
790 * enhancement: stepping is now once again supported on the SPARC and
791 MIPS platforms. (It is also now more likely to work on CheneyGC
793 * enhancement: sb-sprof can now also track and report accurate call
795 * bug fixes: the treatment of non-standard subclasses of
796 SB-MOP:SPECIALIZER is more correct.
797 * incompatible change: PURIFY no longer copies the data from the
798 dynamic space into the static and read-only spaces on platforms
799 that use the generational garbage collector
800 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
802 * bug fix: GC race condition occasionally resulting in crashes with
803 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
805 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
807 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
808 a STYLE-WARNING to be signalled (regression from 1.0.4.)
809 * bug fix: an asynchronous interrupt could previously leave the
810 system running with GC inhibited.
811 * bug fix: a DECLARE form evaluated at top-level now causes an error
812 rather than silently (or verbosely) returning NIL.
813 * bug fix: trying to dissassemble functions compiled at high DEBUG could
814 result in a error being signalled due to source form lookup errors.
815 (reported by Peter Graves)
817 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
818 * incompatible change: removed writer methods for host-ent-name,
819 host-ent-addresses -- changing the values did not update the DNS
821 * minor incompatible change: changed experimental JOIN-THREAD interface
822 * documentation: the manual now lists reader and writer methods
823 in class slot documentation sections. (thanks to Richard M Kreuter)
824 * documentation: unwinding from asyncronous events has been
825 documented as unsafe.
826 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
827 in multithreaded application code.
828 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
829 platforms. (thanks to James Anderson for the optimization hint)
830 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
832 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
833 variants no longer cons.
834 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
835 their NOT- variants no longer cons.
836 * optimization: EQUAL hash tables no longer use SXHASH for objects
837 of all data types, but instead use an EQL hash for types for which
838 EQUAL is the same as EQL.
839 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
840 are significantly faster.
841 * optimization: new STRING-OUTPUT-STREAM implementation is much
842 faster for large outputs and conses 30% less on average.
843 * enhancement: XREF information is now collected for references made
844 to global variables using SYMBOL-VALUE and a constant argument.
845 * enhancement: SIGINT now causes a specific condition
846 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
847 * bug fix: FILE-POSITION used to signal an error in some cases where
848 ANSI requires it to return NIL.
849 * bug fix: ADJUST-ARRAY is now interrupt-safe.
850 * bug fix: adding and removing fd-handlers is now interrupt-safe.
851 * bug fix: inlined calls to C now ensure 16byte stack alignment on
853 * bug fix: bad type declaration in the CLOS implementation has
854 been fixed. (reported by James Anderson)
855 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
856 (thanks to Lutz Euler)
857 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
858 required by the CLHS. (reported by Samium Gromoff)
859 * bug fix: dead unbound variable references now signal an error.
860 (reported by Marco Monteiro)
861 * bug fix: / with an unused value was being deleted in safe code.
862 (thanks to Marco Monteiro and Kevin Reid)
863 * bug fix: number of characters that can be written onto a single
864 line in a file is unlimited.
865 * bug fix: some GC deadlocks caused by asynchronous interrupts have
866 been fixed by inhibiting interrupts for when GC is disabled.
867 * bug fix: some interrupt safety issues with GETHASH, (SETF
868 GETHASH), CLRHASH and REMHASH have been fixed.
869 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
870 specifier no longer causes infinite recursion.
871 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
872 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
873 * bug fix: an &environment argument with the correct variable information
874 is passed to macros that are expanded during byte compilation.
875 (reported by Samium Gromoff)
876 * bug fix: a logic error was causing the hash function for bignums to
877 have excessive amounts of collisions. (reported by Faré Rideau)
878 * bug fix: modifying the contents of an array could change the return
879 value of SXHASH on that array, which is only allowed for strings
880 and bit vectors. (bug introduced in 0.9.16)
881 * improvement: the x86-64/darwin port now passes all tests (except
882 for the debugger tests) but should still be considered
883 experimental until this is fixed.
884 * improvement: a style-warning is signaled for CASE (etc) clauses with
885 duplicate keys. (thanks to Kevin Reid)
886 * improvement: macos/x86 and macos/x86-64 now use mach exception
887 handlers for dealing with illegal instructions (for trapping and
888 error handling) and memory protection violations (for GC).
890 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
891 * new platform: experimental support for x86-64/darwin (MacOS).
892 * incompatible change: the thread-safe (on most platforms) getaddrinfo
893 and getnameinfo sockets functions are used instead of gethostbyaddr
894 and gethostbyname, on platforms where the newer functions are available.
895 As a result, the ALIASES field of HOST-ENT will always be NIL on these
897 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
898 don't print the startup banner, but behave as if --noinform was passed
899 as a command line argument. (thanks to Kevin Reid)
900 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
901 * optimization: code using alien values with undeclared types is much faster.
902 * optimization: the compiler is now able to open code SEARCH in more cases.
903 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
904 * bug fix: using standardized COMMON-LISP special variables as loop
905 variables no longer signals bogus package lock violations. (reported
907 * bug fix: declaring local loop variables to be of a range-limited type
908 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
909 (reported by Andras Simon)
910 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
911 bugs remain on x86-64.)
912 * bug fix: the #= and ## reader macros now interact reasonably with
913 funcallable instances.
914 * bug fix: type-checks for function arguments were compiled using the
915 compiler policy settings of the wrong lexical environment (in 1.0.2
917 * bug fix: SHADOW accepts characters as string designators, as required
918 by the spec (thanks to Eric Marsden)
919 * bug fix: fixed GC safety issues when foreign functions are called with
920 non-base strings as arguments
921 * bug fix: more consistent error output for fatal-compiler-warnings, like
923 * bug fix: functions with proper names were showing up as NIL in
924 backtraces (reported by Edi Weitz, regression in 1.0.2)
926 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
927 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
928 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
929 produce more efficient code on the x86 if the compiler can determine
930 that (+ INDEX <constant>) does not require a bounds check and FOO
931 has an element type at least 8 bits wide.
932 * bug fix: references to undefined variables are handled the same way
933 in toplevel forms as in the normal compiler
934 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
936 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
937 (thanks to Jon Buller)
938 * improvement: faster compilation times for complex functions
939 * improvement: added readlink support to SB-POSIX (thanks to Richard
942 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
943 * improvement: experimental support for mach exception handling on
944 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
946 * improvement: support for GBK external format.
947 (thanks to Chun Tian (binghe))
948 * improvement: the debugger now displays variables that have been closed
949 over, in code compiled with (DEBUG 2) or higher
950 * improvement: support for executable cores on NetBSD (thanks to
952 * new feature: added a RESTART-FRAME debugger command
953 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
954 be used to provide an implementation for FILE-POSITION on Gray streams
955 (thanks to Eric Marsden)
956 * new feature: add syslog, openlog and closelog support to SB-POSIX
957 (thanks to Richard Kreuter)
958 * optimization: the function call overhead in code compiled with
959 a high DEBUG optimization setting is significantly
960 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
961 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
962 (thanks to Tony Martinez)
963 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
964 evaluated once (reported by Kevin Reid)
965 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
966 works again (thanks to Kilian Sprotte)
967 * bug fix: an error is signaled for tagbodies with duplicate tags
968 (thanks to Stephen Wilson)
969 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
970 * bug fix: Win32 port can now handle foreign code unwinding Lisp
971 stack frames from alien callbacks.
972 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
973 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
974 65k pages (thanks to David Woodhouse)
975 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
977 changes in sbcl-1.0.1 relative to sbcl-1.0:
978 * new platform: FreeBSD/x86-64, including support for threading.
979 * new feature: the compiler stores cross-referencing information
980 about function calls (who-calls), macroexpansion (who-macroexpands)
981 and special variables (who-binds, who-sets, who-references) for code
982 compiled with (< SPACE 3). This information is available through the
983 sb-introspect contrib.
984 * new feature: users may subclass SEQUENCE, and have instances of
985 these classes interoperate with standard Common Lisp functions if
986 a number of methods are defined. (This feature is experimental
987 and the interface subject to change based on feedback from SBCL
988 users and the general community)
989 * improvement: sb-sprof traces call stacks to an arbitrary depth on
990 x86/x86-64, rather than the previous fixed depth of 8
991 * improvement: another pthread back-end of mutex "pthread-futex".
992 * bug fix: non-ascii command-line arguments are processed correctly
993 (thanks to Yaroslav Kavenchuk)
994 * bug fix: non-required arguments were not passed correctly when a method
995 defined using DEFMETHOD was called from a mop-generated method using
996 CALL-NEXT-METHOD (reported by Pascal Costanza)
997 * bug fix: recursion is now permitted in accessors through
998 SLOT-UNBOUND. (reported by Pascal Costanza)
999 * bug fix: an error was signaled at startup if the HOME environment
1000 variable was defined, but had an empty value (reported by Peter Van Eynde)
1001 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1002 signal a PROGRAM-ERROR, not a BUG.
1003 * bug fix: SB-POSIX:READDIR works when built with large file support.
1004 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1006 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1007 for better automatic indentation support. (thanks to Matt Pillsbury)
1008 * optimization: loading generic functions no longer takes O(n^2) time,
1009 proportional to the amount of methods in the generic function
1010 (reported by Todd Sabin and Jeremy Brown)
1011 * optimization: the FIND and POSITION family of sequence functions
1012 are significantly faster on arrays whose element types have been
1014 * improvements to the Windows port:
1015 ** Intermittent heap corruption problems have been fixed. (thanks
1016 to Alastair Bridgewater)
1017 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1019 ** Lisp is able to unwind foreign exception frames from alien
1020 callbacks. (thanks to Alastair Bridgewater)
1022 changes in sbcl-1.0 relative to sbcl-0.9.18:
1023 * improvement: experimental support for threading on FreeBSD/x86.
1024 (thanks to NIIMI Satoshi)
1025 * improvement: runtime option --dynamic-space-size can be used
1026 to set the size of the dynamic space reserved on startup.
1027 * improvement: floating point modes in effect are now saved in
1028 core, and restored on startup.
1029 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1030 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1031 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1032 threads are not running after *SAVE-HOOKS* have run.
1033 * improvement: writes to CLOS instance slots are type-checked in code
1034 compiled with (SAFETY 3)
1035 * improvement: floating-point exception handling on FreeBSD (thanks to
1037 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1038 (thanks to Zach Beane)
1039 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1041 * improvement: added support for the Shift-JIS external format.
1042 (contributed by NIIMI Satoshi)
1043 * improvement: callbacks are supported on Linux/PPC. (thanks to
1045 * bug fix: compiler bug triggered by a (non-standard) VALUES
1046 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1047 * bug fix: file compiler no longer confuses validated and already
1048 dumped structurres. (reported by Kaersten Poeck)
1049 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1050 fill-pointer signals a type-error as required. (thanks to
1052 * bug fix: disassemly of funcallable instances works.
1053 * bug fix: single stepping on PPC.
1054 * bug fix: fix thread-safety problems in the type system (generally
1055 manifesting as nonsensical errors like "STRING is a bad type specifier
1056 for sequences" or "The value 1 is not of type FIXNUM")
1057 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1058 (reported by Josip Gracin)
1059 * bug fix: an error is signaled for attempts to displace arrays with
1060 incompatible element types (thanks to Mario Mommer)
1061 * bug fix: more correct handling of wide characters in debug info
1062 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1063 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1064 and don't cause extra consing
1065 * optimization: MAP and MAP-INTO are significantly faster on vectors
1066 whose elements types have been declared.
1067 * Improvements to SB-SPROF:
1068 ** Support for allocation profiling
1069 ** Reduced profiling overhead, especially for long profiling runs
1070 * Improvements to the Windows port:
1071 ** floating point exceptions are now reported correctly.
1072 ** stack exhaustion detection works partially.
1073 ** more accurate GET-INTERNAL-REAL-TIME.
1074 ** better RUN-PROGRAM behaviour in case of errors in the child
1076 ** PROBE-FILE now simplifies pathnames correctly.
1077 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1078 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1079 1st 1970 (although time timezone data will be unreliable).
1080 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1082 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1083 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1084 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1086 * bug fix: two potential GC deadlocks affecting threaded builds.
1087 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1088 returns T (reported by Anton Kazennikov)
1089 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1090 with non-variable places
1091 * bug fix: remove a race condition in the setting of
1092 funcallable-instance functions, this should make threaded CLOS
1093 code more stable against memory faults.
1094 * bug fix: corruption of specials when unbinding is interrupted by an
1095 asynchronous unwind (reported by Hannu Koivisto)
1096 * improvement: the debugger will now also display local variables that
1097 are only used once, for code compiled with a DEBUG optimization quality
1100 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1101 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1102 * incompatible change: External-format support for FFI calls. The
1103 SB-ALIEN:C-STRING no longer implies an ASCII
1104 external-format. Instead the string is subject to external-format
1105 conversion. Additionally return values of type SB-ALIEN:C-STRING
1106 are by default of type (SIMPLE-ARRAY CHARACTER), not
1107 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1108 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1109 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1110 * incompatible change: SB-EXT package no longer contains the
1111 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1112 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1114 * incompatible change: the single-stepper is no longer available
1115 on Alpha, Mips and Sparc platforms.
1116 * minor incompatible change: the direct superclasses of
1117 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1118 not (STANDARD-OBJECT FUNCTION). This makes the
1119 class-precedence-lists of GENERIC-FUNCTION and
1120 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1122 * minor incompatible change: the default stream external format on
1123 non-unicode SBCL is no longer detected from the locale, but is always
1125 * new feature: Add a version of evaluator that uses an interpreter instead
1126 of the compiler. EVAL still uses the compiler by default, to switch it
1127 to use the interpreter, set the value of the variable
1128 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1129 * minor incompatible change: the single-stepper REPL has been merged
1130 with the normal debugger (see the "Stepping" heading of the debugger help
1131 for more details). The debugger command STEP will no longer switch
1132 to the single-stepper REPL.
1133 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1134 for a type now works.
1135 * bug fix: loading of default sysinit file works. (thanks to Leonid
1137 * bug fix: better detection of circularities in the file-compiler.
1138 (reported by Marco Monteiro)
1139 * bug fix: the CL pathname functions now work with files that have
1140 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1141 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1142 systems with Unix98 pty semantics.
1143 * bug fix: ASDF-INSTALL will now work with bsd tar.
1144 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1146 * bug fix: timers expiring in dead threads no longer cause a
1147 type-error (reported by Paul "Nonny Mouse").
1148 * bug fix: thanks to more lightweight single-stepper instrumentation,
1149 code compiled with (DEBUG 3) will compile and execute significantly faster,
1150 and will have more accurate type-inferencing than before
1151 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1152 whose bindings are modified
1153 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1154 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1155 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1156 CL:SOFTWARE-VERSION with proper version
1158 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1159 * feature: implemented the READER-METHOD-CLASS and
1160 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1161 as specified by AMOP.
1162 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1164 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1165 (thanks to Lutz Euler)
1166 * optimization: hashing of general arrays and vectors has been
1167 improved. (reported by Any Fingerhut)
1168 * enhancement: SB-INTROSPECT is now able to find definitions of
1169 profiled functions. (thanks to Troels Henriksen)
1170 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1171 as well, allowing compiler-macros for SETF-functions to expand.
1172 * enhancement: step-instrumentation no longer wraps known
1173 single-value functions with multiple-value context, allowing
1174 better type inference.
1175 * fixed bug #337: use of MAKE-METHOD in method combination now works
1176 even in the presence of user-defined method classes. (reported by
1177 Bruno Haible and Pascal Costanza)
1178 * fixed bug #339(c): if there are applicable methods not part of any
1179 long-form method-combination group, call INVALID-METHOD-ERROR.
1180 (reported by Bruno Haible)
1181 * fixed bug #361: the :FUNCTION initarg in the protocol for
1182 initialization of methods can now be used to override
1183 internally-produced optimized functions. (reported by Bruno
1185 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1186 system-provided lambda expression no longer cause warnings about
1187 unbound #:|pv-table| symbols.
1188 * bug fix: improved the handling of type declarations and the
1189 detection of violations for keyword arguments with non-constant
1191 * bug fix: potentially erronous calls to PATHNAME and
1192 MERGE-PATHNAMES were being flushed in some cases.
1193 (reported by Richard Kreuter)
1194 * bug fix: compiled calls to TYPEP were mishandling obsolete
1195 instances. (reported by James Bielman and Attila Lendvai)
1196 * bug fix: format strings with ~> without matching ~< no longer
1197 trigger an AVER, but signal an understandable error instead.
1198 (reported by Antonio Martinez)
1199 * bug fix: specifying an output-file without a pathname-type for
1200 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1201 of input-file instead of "fasl". (reported by Robert Dodier)
1202 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1203 (reported by James Y Knight).
1204 * bug fix: compiler-macros-function did not consider the environment
1205 argument for shadowing by local functions.
1206 * bug fix: compiler-macros expansion was inhibited by local INLINE
1208 * bug fix: inline expansions of known functions were subject to
1209 step-instrumentation in high debug policies, leading to problems
1210 with type-inference.
1211 * bug fix: compiler failed to differentiate between different CONS
1212 types in some cases.
1213 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1214 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1215 * bug fix: #368: incorrect use of expressed vs. upgraded array
1217 * bug fix: #306a: more precise unions of array types.
1218 * thread-safety improvements:
1219 ** CONDITION-WAIT could return early on Linux, if the thread was
1220 interrupted and subsequently continued with SIGCONT.
1221 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1223 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1224 * added support for the ucs-2 external format. (contributed by Ivan
1226 * minor incompatible change: pretty printing of objects of type
1227 (cons symbol) is, in the default pprint-dispatch-table, now
1228 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1230 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1231 called later in a class's lifetime, possibly as late as when the
1232 first instance of the class is created. Previously,
1233 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1234 class became finalizeable.
1235 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1236 for multibyte external-format streams. (thanks to "vbzoli")
1237 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1238 with :ALLOCATION :CLASS inherited from superclasses of the
1240 * fixed bug: anonymous classes can now be created using the :NAME
1241 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1242 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1243 * fixed bug: core-files saved with :EXECUTABLE T can again be
1244 executed when SBCL_HOME isn't set. (reported by James Knight)
1245 * fixed bug: toplevel LOCALLY forms with declarations could
1246 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1247 * fixed bug: printing from several different threads using different
1248 values of *print-case* could cause invalid output, due to
1249 some internal special variables of the printer not being bound
1250 thread-locally (reported by Max Mikhanosha)
1251 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1252 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1253 (reported by Pascal Costanza)
1254 * fixed bug: FINALIZE-INHERITANCE is called from
1255 REINITIALIZE-INSTANCE on classes when the class has previously
1256 been finalized, as required by AMOP.
1257 * minor code generation optimizations:
1258 ** better register allocation in CLOS dispatching functions
1259 ** overflow detection when coercing signed bytes to fixnums on x86-64
1260 ** is now implemented with one IMUL instruction instead of three shifts
1261 ** more efficient bit-vector access on x86 and x86-64
1262 ** more efficient access to raw structure slots on x86 and x86-64
1263 * fixed some bugs revealed by Paul Dietz' test suite:
1264 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1265 return its argument.
1267 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1268 * feature: thread support on Solaris/x86, and experimental thread support
1270 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1272 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1273 default method for SLOT-UNBOUND.
1274 * minor incompatible change: prevent the user from specializing the
1275 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1276 somewhat counter to the intent of the protocol, I (CSR) think, and
1277 additionally it just doesn't work in SBCL as currently
1278 implemented, thanks to optimizations (that are always valid for
1279 the other three SLOT-VALUEish functions, but not for the setter).
1280 * minor incompatible change: the :SB-LDB feature is now enabled by
1281 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1282 the low-level debugger.
1283 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1284 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1285 down to an SB-SYS:FD-STREAM, allowing direct communication in
1286 more cases. Temporary files and pipes are still used as a fallback
1288 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1289 on the non-reentrant C functions localtime(3) and gmtime(3).
1290 * bug fix: global optimization policy was not visible in LOCALLY and
1292 * bug fix: class objects can be used as specializers in methods.
1293 (reported by Pascal Costanza)
1294 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1295 with a type error. (reported by blitz_ on #lisp)
1296 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1297 failed with a type error. (reported by Pascal Bourguignon)
1298 * bug fix: merging pathnames against defaults with :DIRECTORY
1299 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1300 (reported by James Y Knight)
1301 * bug fix: saving large (>2GB) cores on x86-64 now works
1302 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1303 constant index and a (simple-array (signed-byte 32)) array
1304 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1305 error (patch by Robert J. Macomber)
1306 * feature: TIME now displays the amount of run-time spent in GC
1307 * bug fix: The debugger now does a better job of respecting
1308 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1309 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1310 workaround for bug 403.)
1311 * bug fix: floating point exception handling now works on FreeBSD
1312 (thanks to NIIMI Satoshi)
1313 * fixed some bugs revealed by Paul Dietz' test suite:
1314 ** MISC.641: LET-conversion were not supposed to work in late
1316 * improvements to the Win32/x86 port:
1317 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1318 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1320 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1321 * new feature: source path information is generated for macro-expansion
1322 errors for use in IDE's like Slime (thanks to Helmut Eller)
1323 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1324 * bug fix: compiler does not loop forever on an invalid type in
1326 * improvement: compilation of most CLOS applications is significantly
1328 * optimization: added a limited bytecode compiler for simple toplevel
1329 forms, speeding up compilation and FASL loading
1330 * bug fix: the statistical profiler now properly distinguishes anonymous
1333 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1334 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1335 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1336 into subclasses of the finalized class. Now user calls to
1337 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1338 system return before any subclasses are finalized.
1339 * minor incompatible change: The reader no longer ignores errors
1340 regarding non-existent packages in #+ and #- feature tests.
1341 * new feature: command line options --no-sysinit, --no-userinit to
1342 inhibit loading the corresponding init files
1343 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1344 for sending data through UDP sockets (thanks to François-René Rideau)
1345 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1346 error is signalled instead (thanks to François-René Rideau)
1347 * minor incompatible change: Error signalling behaviour of lexical
1348 operations violating package locks has changed slightly. Refer to
1349 documentation on package locks for details.
1350 * enhancement: EVAL can process IF-expressions without resorting to the
1352 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1353 constant-folded properly due to missing out-of-line functions.
1354 (reported by Mika Pihlajamäki)
1355 * bug fix: LISTEN sometimes returned T even in cases where no data was
1356 immediately available from the stream
1357 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1358 were reversed. (reported by Levente Mészáros)
1359 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1360 when given a vector displaced to an adjustable array. (reported
1362 * bug fix: derivation of float boundaries from numbers outside the
1363 appropriate float range (reported by John Wiseman)
1364 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1366 * bug fix: precomputing cache entries for generic functions with
1367 some subclasses of specializers as yet invalid does not attempt to
1368 fill a cache line with a negative offset. (reported by Levente
1370 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1371 allow condition class objects as arguments to DOCUMENTATION and
1372 (SETF DOCUMENTATION); only find and set documentation for
1373 structure names for the STRUCTURE doc-type. (suggested by Gary
1375 * improvements to the Win32/x86 port:
1376 ** (user-homedir-pathname) and default initialization file
1377 locations now know about the user's "Documents and Settings"
1378 directory (thanks to Yaroslav Kavenchuk)
1379 ** run-program is implemented (thanks to Mike Thomas)
1380 ** sockets support (thanks to Timothy Ritchey)
1381 ** better backtrace support (thanks to Alastair Bridgewater)
1382 ** sb-grovel supported
1383 ** asdf-install and sb-posix work somewhat
1384 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1385 * improvements to the Solaris/x86 port:
1386 ** works on Solaris 11/Solaris Express
1387 ** floating-point exception handling support
1388 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1389 * fixed some bugs revealed by Paul Dietz' test suite:
1390 ** REMOVE-METHOD returns its generic function argument even when
1391 the method is not one of the generic functions' methods.
1392 ** objects declared as MEMBER types can be admissible arguments to
1393 structure accessors.
1394 ** printing characters should simply be printed by the FORMAT ~:C
1396 ** compiler failure when compiling functions with hairy constant
1397 defaults for optional parameters.
1398 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1399 function, which is already optimized.
1401 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1402 * new platform: experimental support for SBCL x86/Darwin, including
1403 MacOS X 10.4.5 on Intel.
1404 * new feature: Unicode character names are now known to the system
1405 (through CHAR-NAME and NAME-CHAR).
1406 * new feature: the filesystem location of SBCL's core file is
1407 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1408 * minor incompatible change: the contrib modules SB-POSIX and
1409 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1410 this change is to make it easier to distribute
1411 location-independent binaries.
1412 * bug fix: as implied by AMOP, standardized classes no longer have
1413 slots named by external symbols of public packages. (reported by
1415 * optimization: calling functions via constant symbols -- as in
1416 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1417 via the function object as in (FUNCALL #'FOO).
1418 * optimization: on x86 and x86-64, the calling convention for the
1419 case of dealing with an unknown number of values has been altered
1420 to be friendlier to the prediction heuristics implemented,
1421 particularly with reference to CALL and RET pairing. (thanks to
1422 Alastair Bridgewater)
1423 * optimization: on x86, the code for access to thread-local symbol
1424 values and binding/unbinding of thread-local symbols is smaller.
1425 (thanks to Alastair Bridgewater)
1426 * enhancement: CONSTANTP is now able to determine constantness of
1427 more complex forms, including calls to constant-foldable standardized
1428 functions and some special forms beyond QUOTE.
1429 * fixed bug: occasional GC crashes on Solaris/x86
1430 * optimization: x86-64 supports stack allocation of results of simple
1431 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1432 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1433 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1434 (thanks to James Knight)
1435 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1436 by the standard (thanks to Stephen Compall)
1438 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1439 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1440 be used for bundling the runtime and the core file into one
1441 executable binary. This feature is not currently supported on all SBCL
1442 platforms. (thanks to James Bielman and NIIMI Satoshi)
1443 * new feature: a generational or ephemeral garbage collector is now
1444 the default on the PowerPC platform (both Linux and Darwin). The
1445 old Cheney (stop and copy) collector is a build-time option.
1446 (thanks to Cyrus Harmon, after Raymond Toy)
1447 * minor incompatible change: the method by which SBCL finds its
1448 contributed modules has changed; it no longer relies on symbolic
1449 links from an $SBCL_HOME/systems directory, but searches directly
1450 in the subdirectories of $SBCL_HOME.
1451 * enhancement: the dynamic heap size on the Linux/PPC platform is
1452 markedly larger, even using the older Cheney garbage collector.
1453 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1454 certain complicated string types. (reported by Gary King)
1455 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1456 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1457 * fixed bug: DOCUMENTATION on structures no longer signals an
1458 error if no structure type of the right name exists. (reported by
1460 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1461 applicable non-standard primary or :AROUND method on
1462 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1463 no longer cause unbound variable errors. (reported by Kevin Reid)
1464 * fixed bug: metacircle resolution in cases where methods have slots
1465 added before the slots from STANDARD-METHOD. (reported by Jean
1467 * fixed bug: the Power PC assembly code for calling into lisp
1468 sometimes computed its return address wrongly (depending on the
1469 15th bit of the address, fixed at link time). This used to
1470 manifest itself in a segmentation violation while building PCL.
1471 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1472 many others over the years)
1473 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1474 the stack pointer (treated as a signed integer) is negative.
1475 (thanks to Peter van Eynde)
1477 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1478 * new platform: experimental support for the Windows operating
1479 system has been added. (thanks to Alastair Bridgewater)
1480 * fixed several bugs in and robustified the PPC FFI (including
1481 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1482 * bug fix: allow non-simple string symbol names (reported by Paul
1484 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1486 * bug fix: saving a core corrupted callbacks on x86/x86-64
1487 * bug fix: closed a loophole in metacircularity detection and
1488 grounding in the PCL implementation of CLOS.
1489 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1490 (reported by tomppa on #lisp)
1491 * bug fix: clear the direction flag on Lisp -> C transitions, as
1492 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1493 (reported by Andrej Grozin and Hendrik Maryns)
1494 * optimization: major improvements to GC efficiency on GENCGC platforms
1495 * optimization: faster implementation of EQUAL
1496 * optimization: emit more efficient opcodes for some common
1497 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1498 * optimization: several other minor code-generation improvements on x86-64
1499 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1501 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1502 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1503 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1504 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1505 by ANSI as a generic function, and for consistency (SETF
1506 GENERIC-FUNCTION-NAME) is treated likewise.
1507 * fixed bug #233.b: make constraint propagation notice when a variable
1508 value is changed after it is referenced but before it is used
1509 * fixed bug #296: no more arbitrary behaviour from filenames with
1510 odd characters as --load arguments. (reported by Adam Warner)
1511 * fixed bug #390: :CHARACTER-SET pathname components now work as
1512 expected. (reported by Tim Daly Jr)
1513 * fixed bug #391: complicated :TYPE intersections in slot
1514 definitions no longer cause an error in PCL internals.
1515 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1516 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1517 returning the number of octets which would be written to the
1518 file-stream. (thanks to Robert J. Macomber)
1519 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1520 arguments to the internal stream functions. (thanks to David
1522 * bug fix: stack exhaustion is now handled on the x86/SunOS
1523 platform. (thanks to Daisuke Homma)
1524 * bug fix: more accurate ROOM results on GENCGC platforms
1525 * optimization: improved type inference for arithmetic-for
1526 index variables in LOOP
1527 * optimization: faster floating-point SQRT on x86-64
1528 * fixed some bugs revealed by Paul Dietz' test suite:
1529 ** DOCUMENTATION returns NIL instead of "" for method combinations
1530 that don't have a docstring
1532 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1533 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1534 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1535 therefore are not customizeable by user code (as seems to be at
1536 least permitted and maybe required by AMOP). As a consolation,
1537 however, the SBCL implementation of these functions now calls
1538 REINITIALIZE-INSTANCE as specified by AMOP.
1539 * bug fix: slot-definition documentation is propagated as per ANSI
1540 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1541 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1542 argument, as do eslotd initialization methods. (from Pascal
1543 Costanza's "Closer" project)
1544 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1545 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1547 * bug fix: it is now possible to have more than one subclass of
1548 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1549 (reported by Bruno Haible, Pascal Costanza and others)
1550 * bug fix: the dependent update protocol now works for generic
1551 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1552 and Pascal Costanza)
1553 * bug fix: condition-class instances corresponding to
1554 DEFINE-CONDITION forms are now created eagerly. (reported by
1555 Kalle Olavi Niemitalo on comp.lang.lisp)
1556 * bug fix: floating point printing is more accurate in some
1557 circumstances. (thanks to Simon Alexander)
1558 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1559 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1560 * bug fix: callbacks on OS X now preserve stack-alignment.
1561 (thanks to Cyrus Harmon)
1562 * enhancement: the x86-64 disassembler is much better at
1563 disassembling SSE instructions. (thanks to Lutz Euler)
1564 * enhancement: CHECK-TYPE on a variable now allows type-inference
1565 (thanks to Vincent Arkesteijn)
1566 * optimization: improved performance of EUC-JP external format.
1567 (thanks to NIIMI Satoshi)
1568 * optimization: performance improvements to IO on file streams of
1569 :ELEMENT-TYPE CHARACTER
1570 * optimization: much faster memory allocation on x86-64
1571 * optimization: faster garbage collections (latency and throughput)
1573 * optimization: faster bignum subtraction and division on x86 and x86-64
1574 (thanks to Lutz Euler)
1575 * optimization: more accurate type-inference for loops that use a
1576 floating point index variable or a negative step.
1578 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1579 * bug fix: add a workaround to SBCL looping infinitely at startup on
1580 Linux kernels with apparently buggy implementations of personality().
1581 (thanks to Svein Ove Aas)
1582 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1583 (thanks to David Lichteblau)
1584 * bug fix: local bindings shadow global symbol macros for
1585 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1586 * optimization: non-open coded uses of numeric comparison operators
1587 (e.g. >) no longer cons when called with more than one parameter
1588 on platforms supporting dynamic-extent allocation.
1589 * enhancement: saving cores with foreign code loaded is now supported
1590 on MIPS/Linux in addition to the previously supported platforms.
1591 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1592 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1593 * bug fix: division by zero in sb-sprof when no samples were collected
1594 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1595 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1596 (thanks to Alexander Kjeldaas)
1597 * new feature: ignoring the return values of destructive functions
1598 like NREVERSE signals a compile-time style-warning.
1599 (thanks to Kevin Reid)
1600 * new feature: the alignment of alien structure fields can be
1601 explicitly specified. (thanks to Cyrus Harmon)
1602 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1603 and dump core on SIGQUIT
1605 ** incompatible change: threads do not inherit values of specials
1606 from their parents (see manual)
1607 ** bug fix: threads stacks belonging to dead threads are freed by the
1608 next exiting thread, no need to gc to collect thread stacks anymore
1609 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1610 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1611 ** bug fix: dynamic variable and thread start related gc lossage
1612 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1614 * fixed some bugs revealed by Paul Dietz' test suite:
1615 ** SUBTYPEP is slightly more accurate on heinously complicated
1616 CONS types where some of the members have uncertain (in the
1617 NIL, NIL sense) type relationships to each other.
1619 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1620 no longer purified unless :PURIFY T is explicitly specified.
1621 ** Non-purified cores are significantly smaller than before
1623 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1624 * new feature: timers based on Zach Beane's excellent timer package
1625 * added support for the following external formats: koi8-u,
1626 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1627 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1628 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1629 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1630 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1631 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1632 * incompatible change: a threaded SBCL will no longer revert to
1633 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1634 * bug fix: interrupts are disabled until startup is complete; no
1635 more sigsegvs when receiving a signal to soon
1636 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1638 * bug fix: add a workaround for the memory randomization features in
1639 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1640 workaround will only be in effect on systems with the proc filesystem
1642 * bug fix: printing objects of type HASH-TABLE signals a
1643 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1645 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1646 have been running for over 50 days. (reported by Gilbert Baumann)
1647 * bug fix: the logic for getting names of functions gets less
1648 confused when confronded with alternate-metaclass
1649 funcallable-instances. (reported by Cyrus Harmon)
1650 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1651 consistent, even on internal alternate-metaclass objects.
1652 * bug fix: flush closure information collected by physical
1653 environment analysis prepass before the main pass. (bug reported
1655 * bug fix: compiler pack phase does not modify a hashtable, which is
1656 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1657 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1658 may be expanded. (reported by Alexander <malishev> on c.l.l)
1659 * bug fix: no more style-warnings when compiling code using LAST
1660 under high-SPEED low-SPACE settings. (reported by David Wallin
1662 * fixed some incompatibilities between SBCL's MOP and the MOP
1664 ** the METAOBJECT class is now implemented;
1665 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1666 STANDARD-OBJECT, as required;
1667 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1668 now compatible (as required by VALIDATE-SUPERCLASS); there
1669 remains a consistency requirement over the presence or absence
1670 of the FUNCTION class in the superclass list of finalized
1671 classes; see the manual for more details;
1672 ** the :AROUND method for COMPUTE-SLOTS on
1673 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1674 requested slot ordering.
1676 ** bug fix: parent thread now can be gc'ed even with a live
1678 ** bug fix: binding a special with PROGV to no value is not
1679 the same as that symbol not having been bound (thanks to
1681 ** bug fix: binding specials is thread safe (thanks to
1683 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1684 and SB-SPROF do not die with 'no handler for signal XX in
1685 interrupt_handle_now(..)' anymore
1686 ** bug fix: WITH-TIMEOUT works with multiple running threads
1687 * fixed some bugs revealed by Paul Dietz' test suite:
1688 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1689 the :method-class keyword argument.
1691 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1692 * new port: the Solaris operating system on x86 processors is now
1693 mostly supported, though some rough edges in the environment
1694 remain. (thanks to Daisuke Homma)
1695 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1696 space for its heap. (thanks to Thiemo Seufer)
1697 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1698 closures. (thanks to Thiemo Seufer)
1699 * minor incompatible change: eof selects abort in the debugger.
1700 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1701 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1703 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1704 deprecated, and will go away in a future revision of SBCL.
1705 * minor incompatible change: GC-ON and GC-OFF are no longer
1706 implemented with a counter, it does not matter how many times gc
1707 is switched on or off
1708 * bug fix: discriminating functions for generic function classes
1709 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1710 make invalid assumptions about method precedence order. (reported
1712 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1713 platforms. (thanks to Thiemo Seufer)
1714 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1715 * bug fix: correct pathname printing with printer escaping is on.
1716 (thanks to Kevin Reid)
1717 * bug fix: complex VOP definitions in "user-space" no longer trigger
1718 package locks. (reported by Zach Beane)
1719 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1720 for funcallable-instance functions, and is no different from
1722 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1723 characters in the current readtable. (reported by Nicholas Neuss)
1724 * bug fix: SUBTYPEP on various CONS types returns more a more
1725 accurate acknowledgment of its certainty.
1726 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1727 lists in some cases. This partially fixes bug 384.
1728 * flush all standard streams before prompting in the REPL and the
1730 * bug fix: signal handling and triggering gc do not conflict
1731 directly anymore, in particular a high frequency sb-sprof does
1732 not prevent gc from running
1733 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1734 approximation for timezone and DST information between the
1735 universal time epoch and the smallest negative 32-bit time_t.
1736 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1737 year 1899 so long as the encoded time is non-negative.
1738 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1739 the correct answer for non-constant rotate amounts when performing
1740 an inline 32-bit rotation.
1742 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1743 there is only one thread in the session
1744 ** bug fix: memory leak for streams created in one thread and
1745 written to in another
1746 ** bug fix: lockup when compiled with gcc4
1747 ** bug fix: race that allows the gc to be triggered when gc is
1749 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1750 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1752 ** bug fix: finished threads are gc'ed properly
1753 * fixed some bugs revealed by Paul Dietz' test suite:
1754 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1755 has arguments with a different set of applicable methods from
1756 the orignal arguments.
1757 ** The type error thrown by MAP now has a correct expected-type
1759 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1760 name a compiled function.
1761 ** Three MISC tests where a large bignum was improperly coerced to
1762 a float that couldn't represent that bignum during type
1763 derivation were fixed.
1764 ** SUBTYPEP can now handle types involving the negation of a
1765 list-form FUNCTION type.
1766 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1767 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1768 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1770 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1771 * New feature: Experimental support for bivalent streams: streams
1772 opened with :element-type :default now allow character and binary
1773 (unsigned-byte 8) I/O
1774 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1775 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1777 * bug fix: no more highly sporadic "couldn't check whether ~S is
1778 readable" when reading a stream and an interrupt hits in the middle
1779 of a select system call
1780 * compiler better recognizes complex arrays (reported by Eduardo
1782 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1783 for variables on SBCL built with linkage-tables. (reported by Luis
1785 * various error reporting improvements.
1786 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1787 (Thanks to Thiemo Seufer)
1788 * bug fix: nested reader invokations work correctly
1789 * bug fix: it is possible to have simultaneous references to foreign
1790 code and foreign data with the same name.
1792 ** added x86-64 support
1793 ** incompatible change: the threading api now works with thread
1794 objects instead of thread ids
1795 ** bug fix: threads are protected from signals and interruption when
1796 starting up or going down
1797 ** bug fix: a race where an exiting thread could lose its stack to gc
1798 ** bug fix: don't halt on infinite error in threads if possible
1799 ** fixed numerous gc deadlocks introduced in the pthread merge
1800 ** bug fix: fixed thread safety issues in read and print
1801 ** bug fix: debugger doesn't hang on session lock if interrupted at
1802 an inappropriate moment
1803 ** bug fix: run-program is now thread safe(r)
1804 ** bug fix: inner with-recursive-lock no longer releases the mutex
1805 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1806 * fixed some bugs revealed by Paul Dietz' test suite:
1807 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1808 EXPECTED-TYPE slots filled.
1809 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1811 ** MAKE-CONDITION accepts classes as type-designators.
1812 ** COMPILE may never return NIL.
1813 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1814 range before calling Unix time functions
1816 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1817 * numerous signal handling fixes to increase stability
1818 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1819 * minor incompatible change: we now correctly canonize default
1820 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1821 as per the MOP, rather than the historical (INITARG INITFUNCTION
1822 INITFORM). (reported by Bruno Haible)
1823 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1824 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1825 for more information.
1826 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1827 pathname is a directory pathname.
1828 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1829 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1831 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1832 :METACLASS argument in addition to a class name. (reported by
1833 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1834 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1835 (reported by Bruno Haible; patch from Gerd Moellmann)
1836 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1838 * bug fix: more cleanups to the floating point exception handling on
1839 x86-64 (thanks to James Knight)
1840 * bug fix: the compiler does not try to constant fold calls of
1841 COERCE and BIT-* functions when they return freshly constructed
1842 objects. (reported by Nikodemus Siivola and Paul Dietz)
1843 * optimization: improved the MIPS versions of generic (in the
1844 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1845 * optimization: direct conversion of (unsigned-byte 32) to floats on
1846 the PowerPC platform.
1847 * optimization: structure instances with raw slots now use less
1848 memory, and probably show better memory locality. (thanks to
1850 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1851 are treated as requests for stack allocation on the x86-64,
1852 Alpha-32, PPC and SPARC platforms.
1853 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1854 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1855 (thanks to Tony Martinez)
1857 ** gcing a dead thread can no longer lead to lockups
1858 ** threads block signals until they are set up properly
1859 ** errno is no longer shared by threads
1860 ** interrupt-thread restores the eflags register on x86
1861 ** fixed some lockups due to gc/thread interaction
1862 * fixed some bugs revealed by Paul Dietz' test suite:
1863 ** invalid dotted lists no longer raise a read error when
1864 *READ-SUPPRESS* is T
1865 ** signal an error if a symbol that names a declaration is used
1866 as the name of a type, or vice versa
1867 ** allow using the (declare (typespec var*)) abbreviation for
1868 (declare (type typespec var*)) with all type specifiers
1869 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1870 ** always return NIL from PPRINT-POP when OBJECT is NIL
1871 ** don't signal errors when pretty-printing malformed LABELS,
1872 FLET or MACROLET forms
1873 ** declarations in a DOLIST body are also in scope for the
1875 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1877 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1880 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1881 * fixed cross-compiler leakages that prevented building a 32-bit
1882 target with a 64-bit host compiler.
1883 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1884 opened with :IF-EXISTS :OVERWRITE.
1885 * fixed bug 281: error for an invalid qualifier in a short-form method
1886 combination method is not signalled until the faulty method is called.
1887 * bug fix: iteration variable type inferrer failed to deal with open
1888 intervals. (reported by Alan Shields)
1889 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1890 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1891 or more runtime options were provided to the sbcl binary.
1892 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1893 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1894 * optimization: there's now a fast-path for fixnum arguments in the
1895 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1896 * optimization: the code generated on x86-64 is more compact thanks
1897 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1898 * bug fix: floating-point exception handling now partly works on
1899 x86-64. (Thanks to James Knight)
1900 * improvement to the MIPS backend from Thiemo Seufer: C-style
1901 64-bit long long arguments and return values to alien functions
1903 * fixed some bugs revealed by Paul Dietz' test suite:
1904 ** the type-error signalled from WARN has a filled-in DATUM slot.
1905 ** the type-error required when a stream is not associated with
1906 a file has the stream as its datum.
1907 ** type-errors on single-floats on x86-64 no longer have
1908 :INVALID-OBJECT as the datum
1909 ** the type-errors signalled for invalid function names now have
1910 a correct expected type
1911 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1912 for structures defined with a :TYPE. Documentation strings for
1913 typed structures are no longer immediately discarded
1914 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1915 broadcast streams and synonym streams. FILE-LENGTH now also works
1916 on broadcast streams.
1918 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1919 * incompatible change: the --noprogrammer option, deprecated since
1920 version 0.7.5, has been removed. Please use the equivalent
1921 --disable-debugger option instead.
1922 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1924 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1925 inoperational for a while now) has been completely removed.
1926 * null lexical environments are now printed as #<NULL-LEXENV>,
1927 significantly reducing the amount of clutter in typical backtraces.
1928 * documentation on weak pointers, finalization, and after GC hooks
1929 has been added to the manual.
1930 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1931 as other specialized array types, is much faster. SUBSEQ and
1932 COPY-SEQ on such arrays have also been sped up.
1933 * optimization: EQL is now more efficient when at least other argument
1934 is known to be of type (OR FIXNUM (NOT NUMBER)).
1935 * fixed bug: the runtime is now less vulnerable to changes in the
1936 size of the SBCL object on OS X, and virtual memory is reserved for
1937 all spaces that need to be at a fixed address.
1938 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1939 * fixed bug: finalizers and after GC hooks that cause consing are now
1941 * fixed bug: compiler error messages and summaries are now printed to
1942 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1943 * fixed inference of the upper bound of an iteration variable.
1944 (reported by Rajat Datta).
1945 * fixed bug 211e: calling local functions with duplicated constant
1946 keyword argument no longer causes a bogus style warning about an
1948 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1949 ftype declaration to be disregarded. (reported by Dave Roberts)
1950 * fixed bug 373: caused by erronous compilation of references to alien
1951 variables in the runtime on ppc/darwin.
1952 * fixed bug 376: CONJUGATE type deriver.
1953 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1954 (reported by Baughn on #lisp)
1955 * a cross-compiler bug on non-x86 platforms has been identified and
1956 fixed. (thanks to Bruno Haible)
1957 * improvements to the MIPS runtime code for increased stability.
1958 (thanks to Thiemo Seufer)
1959 * increased the maximimum compact environment size to allow
1960 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1961 * partial workaround for bug 135: don't name the function we're
1962 calling for hairy cases of EVAL, so as not to accumulate one environment
1963 entry per call to EVAL. (reported by Kevin Reid)
1964 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1965 * optimization: type testing for non-vector arrays should be faster.
1966 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1968 * bug fix: setting 31st element of a bit vector to zero did not work
1970 * bug fix: redefining a class definition which failed due to a
1971 previous accessor / function clash now works (but see BUGS entry
1972 #380 for more problems in this area). (thanks to Zach Beane)
1973 * the long form of DEFINE-METHOD-COMBINATION disables method group
1974 checking when given a single method group with pattern *. (thanks
1976 * on x86 compiler supports stack allocation of results of simple
1977 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1978 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1979 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1980 * fixed some bugs related to Unicode integration:
1981 ** the restarts for recovering from input and output encoding
1982 errors only appear when there is in fact such an error to
1984 * fixed some bugs revealed by Paul Dietz' test suite:
1985 ** MISC.549 and similar: late transformation of unsafe type
1986 assertions into derived types caused unexpected code
1988 ** SCALE-FLOAT type deriver is less wrong.
1989 ** type derivers for EXP, LOG and similar functions compute result
1990 types for complex arguments better.
1991 ** (MISC.563) CONJUGATE type deriver works for very restricted
1993 ** out-of-line type testers for character strings are available.
1994 ** EQUAL compiler transform understands specialness of objects
1996 ** accessing double-floats stored on the stack now works on x86-64.
1997 ** debugger internals could sometimes create invalid lispobjs,
1998 resulting in GC crashes.
1999 ** MISC.548: type check weakening can convert required type into
2001 ** initialization forms for bindings are not in scope of free special
2004 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2005 * incompatible change: thread support for non-NPTL systems has
2006 been removed - locking is buggy and unreliable. A threaded
2007 SBCL build will now warn at startup and refuse to create
2008 new threads, unless futex support is detected in the kernel
2009 * incompatible change: the top level REPL now has only an ABORT
2010 restart associated with it, not TOPLEVEL and ABORT as it used to.
2011 TOP and TOPLEVEL are now available as debugger commands for
2012 returning to the top level.
2013 * incompatible change: forms evaluated in the REPL now use the
2014 global optimization policy.
2015 * incompatible change: user- and system-initialization files are
2016 no longer processed with LOAD, but by READ and EVAL; hence the
2017 global optimization policy, startup package, readtable, etc,
2019 * The .fasl file format number has been incremented because of
2020 various incompatible changes.
2021 * internal entry point details and argument counts no longer appear
2022 in backtraces unless explicitly requested by setting
2023 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2024 * built-in and standard functions no longer have names like "top
2025 level local call to FOO".
2026 * fixed bug 32: functions defined in non-null lexical environments
2027 now have more legible printed representation
2028 * fixed bug 33: functions defined in non-null lexical environemnts
2029 are now more amenable to inspection by INSPECT.
2030 * workaround for bug 354: XEPs no longer appear in backtraces unless
2031 explicitly requested.
2032 * fixed bug: receiving the signal which results from attempting to
2033 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2034 SIGBUS on other *BSDs) on architectures where the C stack is also
2035 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2036 to debugger confusion or wild instability. (reported by Cheuksan
2038 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2039 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2040 (reported by Lutz Euler)
2041 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2042 compiled code. (reported by Paul Dietz)
2043 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2044 specialized parameter to a method to something that is not TYPEP
2045 the specializer is now possible.
2046 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2047 face of package deletion.
2048 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2049 pathname. (reported by David Tolpin on c.l.l)
2050 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2051 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2052 STRING-STREAM and FILE-STREAM, respectively.
2053 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2054 than previously; in addition, its test suite is now run on build.
2055 (thanks to Luke Gorrie)
2056 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2057 * optimization: added a immediate representation for single-floats
2059 * fixed some bugs revealed by Paul Dietz' test suite:
2060 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2061 ** attempting to create a package with a colliding nickname causes
2062 correctable errors to be signalled.
2063 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2064 ** several x86-64 backend bugs related to sign-extension of immediate
2067 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2068 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2069 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2071 * fixed loading of multiply forward-referenced layouts.
2072 (thanks to Cheuksan Wang)
2073 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2074 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2075 (see COMPILE-FILE documentation for details of :PRINT option)
2076 * fixed bugs 19 and 317: fixed-format floating point printing is
2077 more accurate. This also fixes a bug reported by Adam Warner
2078 related to the ~@F format directive.
2079 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2081 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2082 dispatch table if the from-char is a dispatch macro character.
2083 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2084 by the wordsize no longer ignore the last word. (reported by Lutz
2086 * fixed bug in type checking of dynamic-extent variables. (reported
2088 * optimization: sequence traversal functions use their freedom to
2089 coerce function designators to functions.
2090 * optimization: code with many calls to CLOS methods specialized on
2091 CLOS classes has had redundant type checks removed.
2092 * optimization: added declarations to speed up operations that access
2093 the internal character database (for example STRING-UPCASE)
2094 * optimization: comparison operations between floats and sufficiently small
2095 fixnums no longer create extra rationals
2096 * fixed some bugs related to Unicode integration:
2097 ** portions of multibyte characters at the end of buffers for
2098 character-based file input are correctly transferred to the
2099 start of the buffer at the next read.
2100 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2101 passing it through to OPEN.
2102 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2103 argument given to internal calls to OPEN.
2104 ** the built-in comment readers (introduced by character sequences
2105 ";" and "#|") are more forgiving to encoding errors; they will
2106 STYLE-WARN and then attempt to resync the stream at a character
2107 boundary. (thanks to Teemu Kalvas)
2108 * fixed some bugs in the x86-64 port:
2109 ** Negative short int return values from c-calls are sign-extended
2111 ** The stack is aligned to 16-bytes for c-calls, as required by
2112 the ABI. (thanks to Cheuksan Wang)
2113 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2114 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2115 for enums. (thanks to Vincent Arkesteijn)
2116 ** Multiple small optimizations and bugfixes for floating point
2118 * fixed some bugs revealed by Paul Dietz' test suite:
2119 ** Space, Tab, Linefeed, Return and Page have the invalid
2120 secondary constituent character trait.
2121 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2123 ** WITH-INPUT-FROM-STRING should only update the index place on
2125 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2126 works more reliably.
2127 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2128 with one-dimensional arrays with fill pointers.
2129 ** TYPE-OF failed on a complex with an integer realpart and a
2131 ** compiler failure during type inference for the code of form
2132 (IF (EQL X (THE ...)) ...) (MISC.535).
2134 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2135 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2136 platform. The port supports 61-bit fixnums, large memory spaces
2137 and reloading shared object files.
2138 * enhancement: saving cores with foreign code loaded is now
2139 supported on ppc/Darwin in addition to the previously supported
2141 * enhancement: the statistical profiler now walks deeper into the
2142 call stack for more meaningful call-graphs and accrued time
2143 reports (x86/x86-64 only). It also now reports time spent in
2145 * enhancement: it is now possible to trace most individual methods
2146 of a generic function in addition to tracing the generic function
2148 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2150 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2151 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2152 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2153 produces an error. (thanks to Vincent Arkesteijn)
2154 * bug fix: NAMESTRING on pathnames with :WILD components in their
2155 directories works correctly. (thanks to Artem V. Andreev)
2156 * fixed bug 125: compiler preserves identity of closures. (reported
2158 * bug fixed: functions with &REST arguments sometimes failed with
2159 "Undefined function" when compiled with (DEBUG 3). (reported by
2161 * bug fix: overflow during compiling of setting element of a bit
2162 vector with constant index and value. (reported by Timmy Douglas)
2163 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2164 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2165 * on x86 compiler partially supports stack allocation of dynamic-extent
2167 * GO and RETURN-FROM do not check the extent of their exit points
2168 when compiled with SAFETY 0.
2169 * fixed some bugs related to Unicode integration:
2170 ** encoding and decoding errors are now much more robustly
2171 handled; it should now be possible to recover even from invalid
2172 input or output to the terminal. (thanks to Teemu Kalvas)
2173 ** provided a first cut at implementing STRING-TO-OCTETS and
2174 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2175 ** altered the SB-MD5 contributed module slightly, changing the
2176 interface just enough for it to be supportable for builds where
2177 lisp characters are not eight bits.
2178 * fixed some bugs revealed by Paul Dietz' test suite:
2179 ** the FORMATTER-generated functions for ~V[ conditionals require
2180 the correct number of arguments.
2181 ** READ-FROM-STRING returns the mandated second value when applied
2182 to displaced strings.
2183 ** the #\Rubout and #\Backspace characters are treated as invalid
2184 constituent characters by the tokenizer.
2186 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2187 * new feature: reloading changed shared object files with
2188 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2189 * new feature: references to foreign variables and functions
2190 can now be compiled and loaded before the corresponding shared
2191 object file is loaded, as long as the foreign definitions are
2192 available at runtime.
2193 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2194 supported. (thanks to Dan Debertin)
2195 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2196 just keywords. (thanks to Vincent Arkesteijn)
2197 * fixed bug #331: structure-class instances corresponding to
2198 DEFSTRUCT forms are now created eagerly.
2199 * fixed bug #345: backtraces from calls to undefined functions work
2200 on x86 as well. Related bug #61 is now also partially fixed on x86
2201 (backtraces from throws to unknown catch tags.)
2202 * bug fix: lambda-list parsing is now stricter vrt. order and number
2203 of lambda-list keywords.
2204 * bug fix: as specified by AMOP, an error is signalled if a
2205 class-option appears multiple times in a DEFCLASS form. (reported
2207 * bug fix: RANDOM can be compiled when the compiler derives the type
2208 of its numeric argument as a disjoint set of small integers.
2209 (reported by Paul Dietz)
2210 * bug fix: starting a core saved with shared objects loaded when
2211 those objects are not available no longer causes threaded SBCL to
2212 hang. (reported by Sean Ross)
2213 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2215 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2216 argument, which must always be NIL. (reported by Kalle Niemitalo)
2217 * bug fix: printing 1.0d+23 no longer results in an error.
2218 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2219 * bug fix: structure slot setters preserve evaluation order. (thanks
2221 * fixed some bugs related to Unicode integration:
2222 ** RUN-PROGRAM can allow its child to take input from a Lisp
2223 stream. (reported by Stefan Scholl)
2224 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2225 locales. (reported by Ken Causey)
2226 * fixed some bugs revealed by Paul Dietz' test suite:
2227 ** INCF, DECF and REMF evaluate their place form as specified in
2229 ** FORMATTER expands ~{ ~} iteration directives with V or #
2230 parameters correctly.
2231 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2232 consequent uses no arguments correctly.
2233 ** the system has a partial understanding of the (COMPLEX RATIO)
2235 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2238 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2239 * new feature: a build-time option (controlled by the :SB-UNICODE
2240 keyword feature, enabled by default) for building the system with
2241 support for the entire 21-bit character space defined by the
2243 * new feature: the system now has rudimentary external-format
2244 support; the primary user-visible change at this time is that
2245 characters with the high bit set (such as lower-case-e-acute) will
2246 print correctly to a terminal in a UTF-8 environment.
2247 * minor incompatible change: BASE-CHAR no longer names a class;
2248 however, CHARACTER continues to do so, as required by ANSI.
2249 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2250 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2251 has been moved to the SB-EXT package (temporarily re-exported from
2253 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2254 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2256 * fixed bug #351: better error-handlind and reporting for malformed
2258 * fixed bug #350: bignum-printing is now more memory-efficient,
2259 allowing printing of very large bignums, eg. (expt 2 10000000).
2260 (reported by Bruno Haible)
2261 * fixed bug #302: better primitive-type selection for intersection
2263 * fixed bug #308: non-graphic characters now all have names, as
2264 required. (reported by Bruno Haible)
2265 * bug fix: redefining a class with different superclasses now correctly
2266 removes it from the direct-subclasses of its previous superclasses.
2267 (reported by David Morse)
2268 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2269 new value now works. (reported by Bruno Haible)
2270 * bug fix: correct canonicalization of multiple non-standard slot
2271 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2272 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2273 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2274 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2275 now exists, an signals an error.
2276 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2277 during macroexpansion for non-iteration variables as well. (reported
2278 by Bruno Haible for CMUCL)
2279 * bug fix: Cyclic structures and unprintable objects in compiler
2280 messages no longer cause errors. (reported by Bruno Haible)
2281 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2282 and READ-FROM-STRING all now return a primary value of NIL if
2283 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2284 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2285 (reported by Bruno Haible for CMUCL)
2286 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2287 do not designate a condition. (reported by Bruno Haible for
2289 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2290 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2291 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2292 permitting resolution in favour of any of the conflicting symbols.
2293 (reported by Bruno Haible for CMUCL)
2294 * bug fix: EQUAL compiler optimizations is less aggressive on
2295 strings which can potentially compare true despite having distinct
2296 specialized array element types.
2297 * bug fix: unit enumerations can be defined without dividing by
2298 zero. (thanks to Vincent Arkesteijn)
2299 * FORMAT compile-time argument count checking has been enhanced.
2300 (report from Bruno Haible for CMUCL)
2301 * a partial workaround for the bug 262: the compiler does not try to
2302 inline-expand a local function doing RETURN-FROM from a deleted
2303 BLOCK. (thanks to Peter Denno for the bug report and to David
2304 Wragg for the simple test case)
2305 * fixed some bugs revealed by Paul Dietz' test suite:
2306 ** RENAME-PACKAGE allows all package designators as new package
2308 ** constraint propagation and lambda variable substitution are
2309 more cautious in dealing with partially deleted code.
2310 ** compiler sometimes lost reoptimization passes.
2311 ** CERROR, given a condition as condition designator, passes its
2312 remaining arguments to the continue format control without
2314 ** Case-altering FORMAT directives work correctly on non-ASCII
2316 ** The REAL type specifier handles bounds outside the floating
2317 point ranges without signalling FLOATING-POINT-OVERFLOW.
2318 ** Functions with IR1-transformations can create intercomponent
2319 references to global functions.
2320 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2322 ** FORMAT ~R treats a nil value for its first parameter correctly.
2324 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2325 * enhancement: saving cores with foreign code loaded is now
2326 supported on x86/NetBSD and sparc/Linux in addition to the previously
2327 supported platforms.
2328 * bug fix: on some platforms repeated installations caused multiple
2329 copies of HTML documentation to be installed -- should not happen
2330 any more. (reported by Stefan Scholl)
2331 * bug fix: parsing self-recursive alien record types multiple times
2332 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2333 original patch by Helmut Eller for CMUCL)
2334 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2335 (thanks to Richard Kreuter)
2336 * bug fix: defining classes whose accessors are methods on existing
2337 generic functions in other (locked) packages no longer signals
2338 bogus package lock violations. (reported by François-René Rideau)
2339 * bug fix: special variables as DEFMETHOD parameters no longer have
2340 associated bogus type declarations. (reported by David Wragg and
2342 * bug fix: read-write consistency on streams of element-type
2343 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2344 * bug fix: redefiniton of the only method of a generic function with
2345 no DEFGENERIC no longer emits a full WARNING. In addition,
2346 redefinition of generic functions with no DEFGENERIC to an
2347 incompatible lambda list now signals an error. (thanks to Zach
2349 * bug fix: DEFGENERIC now works even when there's a function of the
2350 same name in an enclosing lexical environment. (thanks to Zach
2352 * fixed compiler failure, caused by instrumenting code during
2353 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2354 * optimization: added loop analysis and improved register allocation
2355 * fixed some bugs revealed by Paul Dietz' test suite:
2356 ** POSITION on displaced vectors with non-zero displacement
2357 returns the right answer.
2358 ** (SIMPLE-STRING) is a valid type specifier for sequence
2360 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2362 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2363 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2365 ** The justification version of the FORMAT ~< directive treats
2366 non-zero minpad parameter correctly.
2368 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2369 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2370 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2371 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2372 the supported interface.
2373 * new feature: Single-stepping of code compiled with DEBUG 2 or
2374 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2375 * new feature: saving cores with foreign code loaded is now
2376 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2377 Timothy Moore's work for CMUCL)
2378 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2379 parameters to * instead of NIL if no initform is supplied.
2380 (reported by Johan Bockgaard)
2381 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2382 correctly when FUNCALL appears as the car of the form. Note:
2383 despite this FUNCALL forms are not currently subject to
2384 compiler-macro expansion. (port of Raymond Toy's fix for the
2385 same from CMUCL, reported by Johan Bockgaard)
2386 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2387 (thanks for Teemu Kalvas)
2388 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2389 case instead of terminating the iteration (thanks for Julian
2390 Squires, Sean Champ and Raymond Toy)
2391 * bug fix: incorrect expansion of defgeneric that caused a style
2392 warning. (thanks for Zach Beane)
2393 * bug fix: slot accessor effective method computation works properly
2394 for classes with multiple non-standard applicable methods on
2395 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2396 * on x86 compiler supports stack allocation of results of LIST and
2397 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2398 CMUCL implementation by Gerd Moellmann)
2399 * fixed some bugs revealed by Paul Dietz' test suite:
2400 ** FORMAT strings with both the ~<~:;~> form of the justification
2401 directive and pretty-printing directives cause an error.
2403 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2404 * incompatible change: the internal functions
2405 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2406 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2407 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2408 instead of the old functions.
2409 * new feature: on platforms where "dladdr" is available foreign
2410 function names now appear in backtraces. (based on Helmut Eller's
2412 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2413 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2415 * documentation: ASDF manual is now distributed with SBCL.
2416 * bug fix: SBCL can now load its contributed modules with REQUIRE
2417 even if the system-provided entries have been removed from
2418 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2420 * bug fix: backtraces involving undefined functions or assembly
2421 routines are more informative. (thanks to Brian Downing)
2422 * bug fix: mutually referent alien structures now work correctly.
2423 (reported by Rick Taube)
2424 * bug fix: structures defined by WITH-ALIEN can be referred to
2425 within other definitions in the same WITH-ALIEN.
2426 * bug fix: division operators (MOD, TRUNCATE and the like) with
2427 constant zero divisors and integer dividends no longer generate
2429 * bug fix: provide default methods for INPUT-STREAM-P and
2430 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2431 * bug fix: improve the detection and resolution of MOP metacycles
2432 (where effective method computation depends on the generic function
2433 having its effective method computed). (reported by Bruno Haible)
2434 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2435 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2436 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2437 * bug fix: pathnames with relative directory components can be
2438 represented relative to default pathnames.
2439 * optimization: in taking the GCD of bignums, reduce the two bignums
2440 to approximately the same size (using Euclid's algorithm) before
2441 applying the more sophisticated binary GCD. (thanks to Juho
2443 * optimization: COUNT on bitvectors now operates word-at-a-time.
2444 * optimization: ASH with a positive, but not necessarily constant,
2445 (leftwards) shift, when in a modular context, is compiled to a
2447 * fixed some bugs revealed by Paul Dietz' test suite:
2448 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2449 if the corresponding argument is NIL.
2450 ** FORMAT directives accepting a minpad parameter treat negative
2452 ** literal commas as character parameters to FORMAT directives are
2454 ** literal spaces directly after ~<Newline> directives within a
2455 format-logical-block (~:< ~@:>) do not induce :FILL-style
2456 conditional newlines.
2457 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2458 as specified: it no longer includes conditional newlines).
2459 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2461 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2462 :PER-LINE-PREFIX argument does not evaluate to a string.
2464 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2465 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2466 the manual for details; for now, package locks can be disabled by
2467 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2468 if no major problems are found then it is likely that they will be
2469 compiled in unconditionally.
2470 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2471 unsupported operators on all platforms. To load a shared library
2472 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2473 object file, link it into a shared library outside of SBCL and
2474 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2476 * bug workaround: ROOM T and the GC were not working together
2477 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2478 reporting facility aren't preserved. That reporting has been
2479 disabled, so now until and unless someone figures out how to make it
2480 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2481 * minor incompatible change: as threatened around sbcl-0.8.0, the
2482 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2483 The symbols are also exported from SB-PCL for backwards
2484 compatibility, but more so than before SB-PCL should be treated as
2485 an implementation-internal package.
2486 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2488 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2489 It is known as of this release not to work on the Alpha, however.
2490 * fixed bug #167: errors signalled due to illegal syntax in method
2491 bodies are now more legible.
2492 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2493 designators and can hence be used with TYPEP.
2494 * fixed bug #333: CHECK-TYPE now ensures that the type error
2495 signalled, if any, has the right object to be accessed by
2496 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2497 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2498 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2500 * fixed bug #334: programmatic addition of slots using specialized
2501 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2502 and :ALLOCATION :CLASS slots.
2503 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2504 float exponents. (rereported by Peter Seibel)
2505 * fixed a bug: #\Space (and other whitespace characters) are no
2506 longer considered to be macro characters in standard syntax by
2507 GET-MACRO-CHARACTER.
2508 * fixed bug: initialization of condition class metaobjects no longer
2509 causes an instance of the condition to be created. (reported by
2511 * fixed bug: it is now possible to have slots such that
2512 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2513 description is neither :INSTANCE nor :CLASS.
2514 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2515 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2516 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2517 non-standard SLOT-DEFINITION-ALLOCATION values.
2518 * fixed bugs: various race conditions handling exiting threads.
2519 CL-PPCRE's thread torture test now passes.
2520 * fixed arguably-a-bug: GC time proportional to number of threads in
2521 system even when most of them are idle
2522 * optimization: improved performance of BIT and SBIT on bit-vectors.
2523 * .fasl file incompatibility: The fasl file version number has
2524 been incremented because of changes associated with package locks.
2526 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2527 * minor incompatible change: the system no longer provides
2528 optimization hints (conditions which are TYPEP
2529 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2530 mode; these hints are still emitted when higher SPEED optimization
2532 * new contrib module: a sampling profiler (profiling by statistical
2533 sampling, rather than by instrumenting functions) is available as
2534 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2535 * the behaviour of the standard function ED is now customizeable by
2536 third parties through a hook variable: see ED's documentation
2537 string for information on the protocol.
2538 * the compiler no longer emits efficiency notes for (FUNCALL X)
2539 when the type of X is uncertain under default optimization
2541 * fixed bug 276: mutating a binding of a specialized parameter to a
2542 method to something that is not TYPEP the specializer is now
2544 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2545 exhibit the required behaviour on the x86 platform. (thanks to
2546 Peter van Eynde, Eric Marsden and Bruno Haible)
2547 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2548 even for difficult arguments. (reported by Peter Graves)
2549 * fixed bug 141a: the backquote printer now descends quoted
2551 * fixed another bug in backquote printing: no more destructive
2552 modification of the form's list structure. (reported by Brian
2554 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2555 move between its address being taken and the call to
2556 interrupt_thread, fixing a crashing race condition.
2557 * the SB-POSIX contrib implementation has been adjusted so that it
2558 no longer exhibits ridiculously poor performance when constructing
2559 instances corresponding to C structs.
2561 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2562 * minor incompatible change: the sb-grovel contrib now treats C
2563 structures as alien (in the sense of SB-ALIEN) objects rather than
2564 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2565 has implications for memory management of client code
2566 (sb-grovel-returned objects must now be manually managed) and for
2567 type safety (alien objects now have full types).
2568 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2569 used to control emission of compiler diagnostics, rather than the
2570 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2571 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2572 quality should be considered deprecated.
2573 * install.sh now installs the user manual as well
2574 * (not quite a new documentable feature, but worth considering in
2575 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2576 beginnings of a semantically meaningful condition hierarchy is
2577 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2579 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2580 designator as the defaults argument.
2581 * fixed bug: Displaced arrays whose displaced-to array has become
2582 too small now cause ARRAY-DIMENSION to signal an error, providing
2583 for safer bounds-checking. (reported by Bruno Haible)
2584 * fixed bug: DEFCLASS slot definitions with identical :READER and
2585 :WRITER names now signal a reasonable error. (reported by Thomas
2587 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2589 * fixed bug: Invalid slot specification errors now print correctly.
2590 (thanks to Zach Beane)
2591 * fixed bug 320: Shared to local slot value transfers in class
2592 redefinitions now happen corrently from superclasses as
2593 well. (reported by Bruno Haible)
2594 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2596 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2597 improper lists correctly. (reported by Bruno Haible)
2598 * fixed bug 313: source-transform for <fun-name> was erroneously
2599 applied to a call of a value of a variable with name <fun-name>.
2600 (reported by Antonio Menezes Leitao)
2601 * fixed bug 307: The obsolete instance protocol ensures that
2602 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2603 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2604 remove dead unknown-values globs from the middle of the stack.
2605 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2606 easier to resume long computations after using *BREAK-ON-SIGNALS*
2607 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2608 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2609 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2610 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2611 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2612 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2614 * fixed a (fairly theoretical) bug in string printing: if
2615 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2616 does not have array-element-type equal to the most general string
2618 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2619 function name. (thanks to Nikodemus Siivola)
2620 * fixed bug: compile-time format string checker failed on
2621 non-closed ~{. (reported by Thomas F Burdick)
2622 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2623 don't warn on legal loop code involving more than one aggregate
2624 boolean. (thanks to Nikodemus Siivola)
2625 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2626 in keyword position to MAKE-PACKAGE was not being reported as
2628 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2629 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2631 * fixed bugs 280 and 312: the checking for multiple definitions in a
2632 file is less likely to become confused by uses of inline
2634 * fixed bug: the #S reader macro performs the keyword coercion
2635 specified for slot names. (reported by Kalle Niemitalo)
2636 * fixed bug: lambda lists may contain symbols whose names start with
2637 & but are not lambda-list-keywords; their occurrence triggers a
2639 * fixed bug 321: define-method-combination argument lambda lists do
2640 not cause invalid code to be generated when &optional or &aux
2641 variables have default values. (reported by Bruno Haible)
2642 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2643 have CLOS classes; this appears also to have fixed reported
2644 instability in stack exhaustion detection.
2645 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2646 MUFFLE-WARNING when no associated restart is present is now
2648 * optimization: rearranged the expansion of various defining macros
2649 so that each expands into only one top-level form in a
2650 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2652 * optimization: used a previously little-used slot in symbols to
2653 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2655 * fixed some bugs revealed by Paul Dietz' test suite:
2656 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2658 ** Fixed an optimization bug related to inheritance of initforms
2659 from local to shared slots.
2660 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2661 ** CAST optimizer forgot to flush argument derived type.
2662 ** print/read consistency on floats is now orders of magnitude
2663 more likely. (thanks also to Bruno Haible for a similar report
2665 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2666 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2667 for objects of type REAL. Make it so.
2668 ** SXHASH is specified (infelicitously) to respect similarity,
2669 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2670 it so. (thanks to Markus Ziegler)
2671 ** on the Alpha, the compiler succeeds in compiling functions
2672 returning a known number of arguments greater than 63.
2673 ** fixed handling of invalid NIL arguments in keyword position
2675 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2677 ** provided a readably-printable representation for RANDOM-STATE
2679 ** ensured that pathnames, where they have a namestring, always
2680 print using #P"..." syntax.
2682 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2683 * Support for the forthcoming 2.0 version of the NetBSD kernel
2684 running on x86 hardware has been added. (thanks to Perry
2685 E. Metzger most immediately, and others for their past work)
2686 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2687 current release version; SBCL's OpenBSD support had been broken
2688 since about the time of OpenBSD's switch to ELF binary format.)
2689 * [placeholder for DX summary]
2690 ** user code with &REST lists declared dynamic-extent, under high
2691 speed or space and low safety and debug optimization policy.
2692 * The manual has been converted to Texinfo format and the debugger
2693 chapter from the cmucl manual has been added.
2694 * A facility has been added to extract documentation strings from
2695 sbcl and store them as Texinfo-formatted snippets for inclusion in
2696 the manual (via Texinfo's @include directive)
2697 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2698 the test case to Dave Roberts)
2699 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2700 pointers. (reported by Sean Ross)
2701 * bug fix: PROFILE output is printed nicely even for large numerical
2702 values. (thanks to Zach Beane)
2703 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2704 greater than 32 handle EOF correctly.
2705 * bug fix: on X86 an immediate argument of the IMUL instruction is
2706 correctly printed in disassembly. (thanks to Lutz Euler)
2707 * bug fix: class slots in redefined classes preserve their old
2708 values. (thanks to Bruno Haible and Nikodemus Siivola)
2709 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2710 succeeds. (reported by Marco Baringer)
2711 * fixed some bugs revealed by Paul Dietz' test suite:
2712 ** READ-SEQUENCE now works on ECHO-STREAMs.
2713 ** RATIONALIZE works more according to its specification. (thanks
2716 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2717 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2718 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2719 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2720 should matter to you only if you rebind the printer control
2721 variables and then find you want different bindings in the
2722 debugger than in the ordinary execution of your program.)
2723 * The runtime build system has been tweaked to support building
2724 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2725 assembler and linker. (thanks to Nikodemus Siivola)
2726 * Unbound, undefined, undeclared variables now trigger full
2727 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2728 more often programmer error than deliberate exploitation of undefined
2730 * optimization: the hash algorithm for strings has changed to one
2731 that is less vulnerable to spurious collisions. (thanks to Juho
2733 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2734 needless bounds checking. (thanks to Juho Snellman)
2735 * optimization: implemented multiplication as a modular
2736 (UNSIGNED-BYTE 32) operation on the PPC backend.
2737 * fixed some bugs revealed by Paul Dietz' test suite:
2738 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2740 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2741 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2742 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2744 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2746 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2748 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2749 their output stream on EOF from read.
2750 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2751 have been read to end-of-file.
2752 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2754 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2755 description of determination of which consecutive characters
2757 ** Printing the "Space" character with escaping on now yields "#\\ ",
2758 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2759 ** Reading floating-point numbers with *READ-BASE* set to a number
2760 less than 10 works correctly.
2761 ** Reading floating-point numbers with *READ-BASE* set to a number
2762 more than 10 works correctly.
2763 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2764 the readtable currently in effect.
2766 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2767 * minor incompatible change: parsing of namestrings on a physical
2768 (Unix) host has changed; numbers after the final #\. in a
2769 namestring are no longer interpreted as a version field. This is
2770 intented to be largely invisible to the user, except that the
2771 meaning of the namestring "*.*.*" has changed: it now refers to a
2772 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2773 should usually be replaced by
2774 (make-pathname :name :wild :type :wild :version :wild)
2775 with the added benefit that this is more likely to be portable.
2776 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2777 option to OPEN now signals an error if the file being opened
2778 exists; this may have an impact on existing code.
2779 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2780 signals received, on the PowerPC platforms (both Linux and
2781 Darwin). (thanks to Pierre Mai for pointing out the location of
2783 * several fixes on OS X: The system now builds and runs cleanly on
2784 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2785 (thanks to Brian Mastenbrook)
2786 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2787 second-resolution: integer multiples of 1/3600 between -24 and 24.
2788 (thanks to Vincent Arkesteijn)
2789 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2790 type when called with 1 argument; PEEK-CHAR checked type of
2791 PEEK-TYPE only after having read first character from a
2792 stream. (reported by Peter Graves)
2793 * bug fix: the garbage collector now has much better locality
2794 behaviour, and in particular no longer treats all memory as being
2795 exhausted when many small objects point to each other in a deeply
2797 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2798 recognized as being TYPEP their class.
2799 * bug fix: the PUSHNEW documentation string has been corrected.
2800 (thanks to Vincent Arkesteijn)
2801 * bug fix: defaulting of the value for the last of an atypically
2802 large number of multiple values being bound was not being
2803 performed correctly on the Alpha or PPC platforms
2804 * optimization: implemented multiplication as a modular
2805 (UNSIGNED-BYTE 32) operation on the x86 backend.
2806 * optimization: SEARCH on simple-base-strings can now be open-coded.
2807 (see also contrib/compiler-extras.lisp for inspiration for
2808 teaching the compiler about the Boyer-Moore algorithm).
2809 * value, returned by MAX (and MIN) called with several EQUALP, but
2810 not EQL, arguments now does not depend on compiler settings.
2811 * fixed some bugs revealed by Paul Dietz' test suite:
2812 ** in stack analysis liveness information is propagated from
2813 non-local entry points.
2814 ** pathwise CAST removing failed when the CAST node did not start
2816 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2817 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2819 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2820 host is already defined.
2821 ** RENAME-FILE works on streams instead of signalling an internal
2823 ** PEEK-CHAR uses the current readtable when determining whether
2824 or not a character is whitespace.
2825 ** MERGE-PATHNAMES handles the case when the pathname does not
2826 specify a name while the default-pathname specifies a version.
2827 ** Pathnames now stand a better chance of respecting print/read
2829 ** Attempting to use standardized file system operators with a
2830 pathname with invalid :DIRECTORY components signals a
2832 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2834 ** DIRECTORY on logical pathnames is more correct.
2835 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2836 signal a TYPE-ERROR if their argument is not a stream.
2837 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2838 designator argument does not designate a stream.
2839 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2840 examining the synonym.
2841 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2843 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2844 element-type larger than ([UN]SIGNED-BYTE 32).
2846 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2847 * When built with the :SB-FUTEX feature, threaded builds now take
2848 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2849 for faster/more reliable mutex and condition variable support.
2850 * Incompatible change (but one you probably shouldn't have been using
2851 anyway): the interface and code for arbitrating between multiple
2852 threads in the same user session has been redesigned.
2853 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2854 error when called without an explicit environment argument.
2855 (thanks to Nikodemus Siivola)
2856 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2857 confused about their position. (thanks to Adam Warner and Gerd
2859 * bug fix: Pretty printing backquoted forms with unquotations in the
2860 argument list position of various code constructs such as LAMBDA
2861 now works correctly. (reported by Paul Dietz)
2862 * bug fix: Pretty printing unquotations no longer loses all
2863 stream position information.
2864 * optimization: performance of string output streams is now less
2865 poor for multiple small sequence writes.
2866 * optimization: performance of CSUBTYPEP in the presence of complex
2867 expressions involving CONS and NOT many times has been improved.
2868 (reported by Paul Dietz)
2869 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2871 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2872 streams for the REPL, for the debugger, and so on. (thanks to
2874 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2875 * fixed some bugs revealed by Paul Dietz' test suite:
2876 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2877 is ignored if it is too small, rather than propagating through
2878 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2879 ** extremely complex negations of CONS types were not being
2880 sufficiently canonicalized, leading to inconsistencies in
2882 ** VALUES tranformer lost derived type.
2884 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2885 * fixed a bootstrapping bug: the build process no longer assumes
2886 that the various BOOLE-related constants have the same value in
2887 host and target lisps. (noted by Paul Dietz' test suite on an
2888 SBCL binary built from CLISP)
2889 * The system can now be dynamically linked on the MIPS platform,
2890 which enables dynamic loading of foreign code from Lisp. (thanks
2891 to Ralf Baechle for discussions on the MIPS ABI)
2892 * The system now records debugging information for its own source
2893 files in a filesystem-position-independent manner, relative to
2894 the "SYS" logical host.
2895 * fixed a compiler bug: MV-LET convertion did not check references
2896 to the "max args" entry point. (reported by Brian Downing)
2897 * tweaked disassembly notes to be less confident about proclaiming
2898 some instruction as an LRA. (thanks to Brian Downing)
2899 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2900 now each have their own history, command character, and other
2901 characteristics. (thanks to David Lichteblau)
2902 * fixed some bugs revealed by Paul Dietz' test suite:
2903 ** compiler failure in compiling LOGAND expressions including a
2905 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2906 shift greater than 32.
2907 ** FLUSH-DEST did not mark blocks for type check regeneration.
2908 ** HANDLER-CASE failed to accept declarations in handler clauses
2909 in some circumstances.
2911 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2912 * New code in contrib/sb-introspect (still probably not entirely
2913 stable yet) provides some support for smart Lisp development
2914 environments like SLIME.
2915 * The conditions signalled for errors occurring when loading .fasl
2916 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2917 in a way which should help ASDF recover gracefully.
2918 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2919 stuff has been cleaned up. If you code contrib/ stuff, this might
2920 affect you, and you can look at contrib/README, contrib/STANDARDS,
2921 and/or the 0.8.4.27 diff to check.
2922 * In full calls the compiler now does not generate checks for declared
2923 argument types for all arguments.
2924 * various threading fixes
2925 ** and some experimental patches which didn't make it into
2926 the main tree for this release, but which are shipped in
2927 contrib/experimental-thread.patch as a possible fix for some
2928 failures (deadlock, spinning...) in GC-intensive multithreaded
2930 * fixed PPC build problem (source code incompatibility of different
2931 library versions): added offsetof() hackery which attempts to divine
2932 where glibc maintainers put uc_mcontext today
2933 * fixed bug 282: compiler does not trust type assertions while passing
2934 arguments to a full call.
2935 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2936 &OPTIONAL VALUES type parameter.
2937 * fix bug 214: algorithm for noting rejected templates is now more
2938 similar to that of template seletion. (also reported by rydis on
2940 * fixed bug 141b: printing backquoted information readably and prettily
2941 inserts a space where necessary.
2942 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2943 (CHARACTER 10) are now reported as errors, rather than propagated
2944 as unknown types. (reported by piso on #lisp)
2945 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2946 with values NIL and :ERROR. (thanks to Milan Zamazal)
2947 * fixed bug 191c: CLOS now does proper keyword argument checking as
2948 described in CLHS 7.6.5 and 7.6.5.1.
2949 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2950 longer raise an error; further, using a list as a for-as-arithmetic
2951 counter now raises a meaningful error.
2952 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2953 now understood by sequence creation functions such as MAKE-SEQUENCE
2955 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2956 a STRING-INPUT-STREAM.
2957 * compiler enhancement: SIGNUM is now better able to derive the type
2959 * type declarations inside WITH-SLOTS are checked. (reported by
2961 * fixed some bugs revealed by Paul Dietz' test suite:
2962 ** incorrect optimization of TRUNCATE for a positive first
2963 argument and negative second.
2964 ** compiler failure in let-convertion during flushing dead code.
2965 ** compiler failure while deriving type of TRUNCATE on an
2966 interval, containing 0.
2967 ** ASH of a negative bignum by a negative bignum count now returns
2969 ** intersection of CONS types now canonicalizes properly, fixing
2970 inconsistencies in SUBTYPEP.
2972 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2973 * incompatible change: The --disable-debugger command line
2974 option now clobbers the debugger at a more fundamental
2975 level, by redefining #'INVOKE-DEBUGGER instead of by
2976 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2977 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2978 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2979 enter the debugger REPL and then suffer recursive errors
2980 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2981 while under the new system, BREAK in --disable-debugger mode
2982 terminates the system just as an unhandled error would.
2983 * fixed compiler performance when processing loops with a step >1;
2984 * bug fix: DOCUMENTATION now retrieves generic function
2985 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2986 support has been systematized, and now supports the methods
2987 specified by ANSI, along with a default method and a method for
2988 slot documentation. (reported by Nathan Froyd)
2989 * bug fix: effective methods associated with a generic function are
2990 no longer cached over a change of that generic function's method
2991 combination. (reported by Andreas Fuchs)
2992 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2993 names a non-existent directory. (thanks to Andreas Fuchs)
2994 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2995 the PPC platform, lead to stack corruption; this has been fixed.
2996 (reported by Rainer Joswig)
2997 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2998 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2999 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3000 arithmetic in general, is now much more reliable on the PPC
3002 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3003 platform now returns the right answer.
3004 * optimization: restored some effective method precomputation in
3005 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3006 precomputation is now tunable.
3007 * optimization: compiler-internal data structure use has been
3008 reviewed, and changes have been made that should improve the
3009 performance of the compiler by about 20%.
3010 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3011 simple-base-strings and simple-bit-vectors is improved.
3012 * optimization: the optimization of 32-bit logical and arithmetic
3013 functions introduced in version 0.8.3 on the x86 has been
3014 implemented on the mips, ppc and sparc platforms; an
3015 implementation of the same facility, but for 64-bit arithmetic,
3016 has been added for the alpha.
3017 * microoptimization: the compiler is better able to make use of the
3018 x86 LEA instruction for multiplication by constants.
3019 * bug fix: in some situations compiler did not report usage of
3020 generic arithmetic in (SPEED 3) policy.
3021 * bug 145b fix: compiler used wrong type specifier while converting
3022 MEMBER-types to numeric.
3023 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3025 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3026 index argument now works properly on the Alpha platform.
3027 * bug fix: floating point exception treatment on the Alpha platform
3029 * bug fix: FILE-POSITION works much better on string input and
3030 output streams. (thanks to Nikodemus Siivola)
3031 * bug fix: many threading/garbage collection symptoms sorted.
3032 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3033 might be pseudo-atomic.
3034 * internal change: Stopping for GC is now done with signals not
3035 ptrace. GC is now done in whichever thread wanted it, instead of
3037 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3039 * bug fix: result form in DO is not contained in the implicit
3041 * incompatible change: ICR structure is changed; the value part of
3042 CONTINUATION is now called LVAR; corresponding functions are
3043 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3044 * added type deriver for ISQRT (thanks to Robert E. Brown).
3045 * bug fix: better support for loading from the command line when an
3046 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3048 * fixed some bugs revealed by Paul Dietz' test suite:
3049 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3050 ** ROUND and FROUND now give the right answer when given very
3051 small float arguments.
3052 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3054 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3055 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3056 ** LCM should return a non-negative integer.
3057 ** PARSE-INTEGER returned the index of a terminator instead of the
3058 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3059 ** PARSE-INTEGER returned an incorrect index being applied to a
3061 ** LCM with two arguments of 0 returns 0 rather than signalling
3063 ** unsigned addition of a 32-bit constant with the high bit set no
3064 longer causes an internal compiler error on the x86.
3065 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3066 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3067 with negative last argument.
3068 ** byte specifiers with zero size and position no longer cause
3069 an error during type derivation.
3070 ** bignum multiplication on the Alpha platform now returns the
3072 * porting: The system now builds on SuSE AMD64, although it still
3073 generates a 32-bit binary.
3074 * .fasl file incompatibility: The fasl file version number has
3075 been incremented (because of the changes to internal compiler
3076 data structures referred to above).
3078 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3079 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3080 more accurately, on the Darwin kernel running on PowerPC hardware.
3081 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3082 * Compiler code deletion notes now signal a condition of type
3083 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3084 an associated MUFFLE-WARNING restart.
3085 * The compiler now performs limited argument count validation of
3086 constant format strings in FORMAT, and where appropriate in ERROR,
3087 CERROR and WARN. (thanks to Gerd Moellmann)
3088 * New ASDF-INSTALL contrib can be used for automatic download and
3089 installation of third-party Lisp code from CCLAN or other sites
3091 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3092 which forces another thread to execute a function supplied by the
3094 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3095 now accept and act upon their :ELEMENT-TYPE keyword argument.
3096 (reported by Martin Atzmueller, Edi Weitz)
3097 * bug fix: FILE-POSITION now accepts position designators up to
3098 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3099 is the greater. (thanks to Patrik Nordebo)
3100 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3101 Kalle Olavi Niemitalo)
3102 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3103 printable. (reported by Eric Marsden)
3104 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3105 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3106 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3107 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3108 (thanks to Stig Sandoe)
3109 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3110 UNREAD-CHAR now correctly includes the unread character in the
3111 target sequence. (thanks to Gerd Moellmann)
3112 * bug fix in threaded builds: the system can now be suspended and
3113 resumed by shell job control with minimal disruption.
3114 * bug fixes in times and timezones >2038AD
3115 * better handling of "where is GNU make?" problem in build scripts
3116 (thanks to Nikodemus Siivola)
3117 * new optimization: inside a named function any reference to a
3118 function with the same name is considered to be a self-reference;
3119 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3120 optimization quality.
3121 * new optimization on x86: logical functions and + now have
3122 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3123 used when the result is truncated to 32 bits.
3124 * VALUES declaration is partially enabled.
3125 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3126 * fixed some bugs revealed by Paul Dietz' test suite:
3127 ** The system now obeys the constraint imposed by
3128 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3129 types form a lattice under type intersection.
3130 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3131 ** ASSOC now ignores NIL elements in an alist.
3132 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3133 and (1+ MOST-POSITIVE-FIXNUM) answers.
3134 ** The addition of a method with invalid qualifiers to a generic
3135 function does not cause an error to be signalled immediately;
3136 a warning is signalled, and the error is generated only on
3137 calling the generic function.
3138 * changed .fasl file version number, in part to add type codes for
3139 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3140 obscure ANSI requirements
3142 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3143 * fixed bug 148: failure to inline-expand a local function left
3144 garbage, confusing the compiler.
3145 * fixed bugs 3cd: structure slot readers perform type check if the
3146 slot can have an invalid value (i.e. it is either not initialized
3147 or can be written with a less specific slot writer).
3148 * bug fix: the compiler now traps array references to elements off
3149 the end of an array; previously, the bounds checking in some
3150 circumstances could go off-by-one.
3151 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3153 * type declarations for array element types now obey the description
3154 on the CLHS page "Declaration TYPE", as per discussions on
3155 sbcl-help around 2003-05-08. This means that a declaration
3156 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3157 declaration, all references to BAR will be asserted or assumed
3158 (with THE, so dependent on compiler policy) to involve objects of
3159 type FOO. Note that no such declaration is implied in
3160 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3161 * declared types of functions from the "Conditions"
3162 chapter. (reported by Paul Dietz)
3163 * bug fix: CERROR accepts a function as its first argument.
3164 * bug fix: NTH an NTHCDR accept a bignum as index
3165 arguments. (reported by Adam Warner)
3166 * optimization: character compare routines now optimize comparing
3167 against a constant character. (reported by Gilbert Baumann)
3168 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3169 argument now works properly on the MIPS platform.
3170 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3171 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3172 declared to have a functional type, does not cause an error
3174 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3175 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3176 * fixed bug: if last continuation of a deleted block has a
3177 destination, this destination should be deleted too. (reported by
3179 * fixed a bug in the bootstrap process: the host compiler's values
3180 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3181 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3182 test case from Patrik Nordebo)
3183 * improved the ability of the disassembler on the PPC platform to
3184 provide helpful disassembly notes.
3185 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3186 the class in more cases than previously.
3187 * bug fix: FILE-POSITION now understands :START and :END for
3188 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3189 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3190 8) data. (thanks to David Lichteblau)
3191 * bug fix: it is possible to add a method to a generic function
3192 without lambda list.
3193 * bug fix: reader failed to signal END-OF-FILE inside an
3194 object representation. (reported by Nikodemus Siivola)
3195 * fixed some bugs revealed by Paul Dietz' test suite:
3196 ** LAST and [N]BUTLAST should accept a bignum.
3197 ** condition slot accessors are methods.
3198 ** (VECTOR NIL) is a subtype of STRING.
3200 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3201 * minor incompatible change: some nonsensical specialized lambda
3202 lists (used in DEFMETHOD) which were previously ignored now signal
3204 * minor incompatible change: the system is now aware of the types of
3205 variables in the COMMON-LISP package, and will signal errors for
3206 most violations of these type constraints (where previously they
3207 were silently accepted).
3208 * minor incompatible change: COMPILE-FILE now uses the freedom
3209 afforded (ANSI 3.2.2.3) to use derived function types for
3210 functions defined in the same file. This also permits the system
3211 to warn on static type mismatches and function
3212 redefinition. (Currently it does not work with high DEBUG level.)
3213 * minor incompatible change: VALUES declaration is disabled.
3214 * When issuing notes, the compiler now signals a condition of type
3215 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3216 restart for use in user handlers. It is expected that the
3217 COMPILER-NOTE condition will eventually become a condition
3218 supertype to a hierarchy of note types, which will then be
3219 handleable in a similar fashion. However, at the moment, no such
3220 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3221 but it's an implementation detail, not a classification for the
3223 * Changes in type checking closed the following bugs:
3224 ** type checking of unused values (192b, 194d, 203);
3225 ** template selection based on unsafe type assertions (192c, 236);
3226 ** type checking in branches (194bc).
3227 * A short form of VALUES type specifier has ANSI meaning (it has
3228 increased the number of situations when SBCL cannot perform type
3230 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3231 keywords or constants is permissible.
3232 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3233 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3234 classes. (thanks to Antonio Martinez)
3235 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3236 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3237 argument to a pretty-print stream. Instead, it leaves any such
3238 operations to DESCRIBE-OBJECT methods.
3239 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3241 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3242 lambda lists. (thanks to David Lichteblau)
3243 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3244 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3245 (thanks to Gerd Moellmann)
3246 * fixed bug 246: increased compilation speed of long
3247 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3249 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3251 * DEFCONSTANT now throws a condition of type
3252 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3253 constant to a non-EQL value; CONTINUE and ABORT restarts
3254 respectively change and preserve the value.
3255 * fixed bug 63: The code walker, part of the implementation of CLOS,
3256 is now better at handling symbol macros.
3257 * bug fix: There is no longer an internal implementation type named
3258 CL:LENGTH. (reported by Raymond Toy)
3259 * bug fix: In macro-like defining macros/special operators the
3260 implicit block does not enclose the lambda list.
3261 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3262 enclosed in parentheses) are not suitable as type specifiers, and
3263 their use properly signals an error now.
3264 * bug fix: An argument count mismatch for a type specifier in code
3265 being compiled no longer causes an unhandled error at compile
3266 time, but signals a compile-time warning.
3267 * fixed simple vector readable printing
3268 * bug fix: DESCRIBE takes more care over whether the class
3269 precedence list slot of a class is bound before accessing it.
3270 (reported by Markus Krummenacker)
3271 * bug fix: FORMATTER can successfully compile pretty-printer format
3272 strings which use variants of the ~* directive inside.
3273 * bug fix: SEARCH now applies its TEST predicate to the elements of
3274 the arguments in the correct order. (thanks to Wolfhard Buss)
3275 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3276 in type inference. (thanks to Robert E. Brown)
3277 * bug fix: Reading in symbols with an explicit package name of ""
3278 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3279 * fixed some bugs revealed by Paul Dietz' test suite:
3280 ** NIL is now allowed as a structure slot name.
3281 ** Arbitrary numbers, not just REALs, are allowed in certain
3282 circumstances in LOOP for-as-arithmetic clauses.
3283 ** Multiple class redefinitions before slot access no longer
3284 causes a type error.
3285 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3286 association between the name and a class.
3287 ** Generic functions with non-standard method-combination and over
3288 five methods all of which return constants no longer return NIL
3289 after the first few invocations. (thanks to Gerd Moellmann)
3290 ** CALL-NEXT-METHOD with no arguments now passes the original
3291 values of the arguments, even in the presence of assignment.
3292 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3294 ** DISASSEMBLE works with closures and funcallable instances.
3295 ** ADD-METHOD now returns the generic function, not the new method.
3296 ** FIND-METHOD signals an error if the lengths of the specializers
3297 is incompatible with the generic function, even if the ERRORP
3299 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3300 which its argument is a member.
3301 ** DEFCLASS only redefines the class named by its class-name
3302 argument if that name is the proper name of the class;
3303 otherwise, it creates a new class.
3304 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3305 of the UNBOUND-SLOT condition to the name of the slot.
3306 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3307 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3308 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3309 SLOT-MAKUNBOUND in the specified fashion.
3311 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3312 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3313 cross-compilation host. As a consequence, we can now bootstrap our
3314 way up to SBCL starting with a bare gcc toolchain and human-readable
3315 source code (first the source to CLISP, then the source to SBCL).
3316 * A contributed module containing a partial implementation of the
3317 simple-streams interface has been included. (thanks to Rudi
3319 * A contributed module implementing the RFC1321 Message Digest
3320 Algorithm, known as MD5, has been included.
3321 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3322 no longer has any effect, as the code controlled by this feature
3323 has been deleted. (As far as we know, no-one has ever built using
3324 this feature, and its semantics were confused in any case).
3325 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3326 work on conditions (as required by the ANSI specification),
3327 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3328 expected behaviour on conditions. Users should note, however,
3329 that such behaviour is not required by the ANSI specification,
3330 and so use of this behaviour may render their code unportable.
3331 * fixed some bugs revealed by Paul Dietz' test suite:
3332 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3334 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3335 ** SXHASH on condition objects no longer returns NIL.
3336 ** :ALLOCATION :CLASS slots are better treated; their values are
3337 updated on class redefinition, and initforms inherited from
3338 superclasses are applied.
3339 ** REMOVE-METHOD returns its generic function argument even when
3340 no method was removed.
3341 ** SHARED-INITIALIZE now initializes the values of the requested
3342 slots, including those with :ALLOCATION :CLASS.
3343 ** ALLOCATE-INSTANCE now works on structure classes defined via
3344 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3346 ** SLOT-EXISTS-P now works on conditions, as well as structures
3348 ** MAKE-LOAD-FORM now has the required methods on
3349 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3350 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3351 keyword, and now implements the SLOT-NAMES argument.
3352 ** methods with &OPTIONAL arguments no longer allow too many
3353 arguments to be passed in the call without error.
3354 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3355 option is consistent with the required arguments of the generic
3356 function lambda list.
3357 * bug fix: REQUIRE accepts a string designator. (Thanks to
3359 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3360 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3361 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3362 * bug fix: The compiler now checks for duplicated variables in macro
3364 * bug fix: SETQ on globals returns the correct value.
3365 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3366 not a COMPILER-ERROR (followed by some other strange error on
3367 choosing the CONTINUE restart).
3368 * bug fix: make.sh and friends are now more consistent in the way that
3369 they look for GNU "make".
3371 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3372 * experimental native threads support (on x86 Linux >=2.4 only).
3373 This is not compiled in by default: you need to add :SB-THREAD to
3374 the target features. See the "Beyond ANSI" chapter of the manual
3376 * fix for longstanding nonANSIism: The old distinction between
3377 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3378 The return value from CL:FIND-CLASS is now a CLOS class, and
3379 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3380 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3381 * An interface to the MetaObject Protocol, as described in Kiczales,
3382 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3383 MIT Press, 1991, is available from the SB-MOP package.
3384 * incompatible change: the SB-PCL package should now be considered
3385 a private implementation detail, and no longer a semi-private MOP
3387 * minor incompatible change: due to rearrangement for threads, the
3388 control stack and binding stack are now allocated at arbitrary
3389 addresses instead of being hardcoded per-port. Users affected by
3390 this probably have to be doing advanced things with shared
3391 libraries, and will know who they are.
3392 * minor incompatible change: Previously, all --eval forms used were
3393 processed with READ before any of them were processed with EVAL.
3394 Now each --eval form is processed with both READ and EVAL before
3395 the next --eval form is processed. (Thus package operations like
3396 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3397 work as the user might reasonably expect.)
3398 * minor incompatible change: *STANDARD-INPUT* is now only an
3399 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3401 * minor incompatible change: Y-OR-N-P is now character-oriented,
3402 not line oriented. Also, YES-OR-NO-P now works without errors.
3403 (thanks to Antonio Martinez)
3404 * sb-aclrepl module improvements: an integrated inspector, added
3405 repl features, and a bug fix to :trace command.
3406 * Known functions, which cannot be open coded by the backend, are
3407 considered to be able to check types of their arguments. (fixing
3408 a bug report by Nathan J. Froyd)
3409 * fixed a bug in computing method discriminating functions: It is
3410 now possible to define methods specialized on classes which have
3411 forward-referenced superclasses. (thanks to Gerd Moellmann)
3412 * fixed evaluation order in optional entries (reported by Gilbert
3414 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3415 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3416 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3417 required-by-AMOP NAME argument, as well as CLASS and
3418 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3419 * fixed bug 20: DEFMETHOD can define methods using names that are
3420 not the proper names of classes to designate class specializers.
3421 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3422 Unix file descriptors, instead of blowing up. (thanks to Antonio
3424 * Garbage collection refactoring: user-visible change is that a
3425 call to the GC function during WITHOUT-GCING will not do garbage
3426 collection until the end of the WITHOUT-GCING. If you were doing
3427 this you were probably losing anyway.
3428 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3429 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3430 TYPEP the latter but not the former.
3431 * The compiler issues a full WARNING for calls to undefined functions
3432 with names from the CL package.
3433 * MAP-INTO for a vector destination is open coded. (reported by
3434 Brian Downing on c.l.l)
3435 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3436 documentation string.
3437 * fixed some bugs revealed by Paul Dietz' test suite:
3438 ** COPY-ALIST now signals an error if its argument is a dotted
3440 ** Condition slots are now accessed more correctly in the presence
3441 of multiple initargs for a given slot.
3442 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3443 exclude restarts of the same name associated with a different
3445 ** DEFCLASS of forward-referenced classes with another
3446 forward-referenced class in the superclasses list no longer
3448 ** Condition slots are now initialized once each, not multiple
3449 times. (thanks to Gerd Moellmann)
3450 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3452 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3453 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3454 arguments contain duplicated elements.
3455 ** RESTART-CASE understands local macros.
3456 ** RESTART-CASE associates exactly its own restarts with a condition.
3457 ** ENDP in safe mode checks its argument to be of type LIST.
3458 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3459 in question is unbound.
3460 ** Optimized MAKE-INSTANCE functions no longer cause internal
3461 assertion failures in the presence of duplicate initargs.
3462 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3463 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3464 propagated even in the ctor optimized implementation of
3466 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3468 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3469 * a better implementation of SXHASH on (simple) bit vectors,
3470 measured both in execution speed and in distribution of results
3471 over the positive fixnums, has been installed. Likewise, a better
3472 implementation of EQUAL for simple bit vectors is now available.
3473 * fixed CEILING optimization for a divisor of form 2^k.
3474 * fixed bug 240 (emitting extra style warnings "using the lexical
3475 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3476 by Antonio Martinez)
3477 * fixed SXHASH, giving different results for NIL depending on type
3478 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3479 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3480 variable. (found by Rolf Wester)
3481 * SBCL does not ignore type declarations for special
3482 variables. (reported by rif on c.l.l 2003-03-05)
3483 * some bug fixes in contrib/sb-aclrepl/
3484 * fixed some bugs revealed by Paul Dietz' test suite:
3485 ** a bug in the CONS type specifier, whereby the CAR and CDR
3486 types got intertwined, has been fixed;
3487 ** the type system is now able to reason about the interaction
3488 between INTEGER and RATIO types more completely;
3489 ** APPEND, [N]REVERSE and NRECONC check that those their
3490 arguments, which must be proper lists, are really so;
3491 ** An array specialized to be unable to hold elements has been
3492 implemented, as required -- yes, really -- by ANSI;
3493 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3494 on malformed property lists;
3496 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3497 * incompatible packaging change: in line with Unix convention,
3498 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3499 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3500 * REQUIRE and PROVIDE are now optionally capable of doing something
3501 useful. See the documentation string for REQUIRE.
3502 * infrastructure for a managed SBCL contrib system: contributed
3503 modules in this release include:
3504 ** the ASDF system definition facility;
3505 ** an interface to the BSD Sockets API;
3506 ** an ACL-like convenience interface to the repl;
3507 (thanks to Kevin Rosenberg)
3508 ** an implementation of ROTATE-BYTE, with efficient implementation
3510 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3511 gives a closer approximation to the right answer than previously.
3512 (thanks to Raymond Toy)
3513 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3514 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3515 optional environment arguments, as required by ANSI.
3516 * fixed bugs in other functions taking environment objects, allowing
3517 calls with an explicit NIL environment argument to be compiled
3519 * fixed bug 228: primary return values from
3520 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3521 COMPILE or FUNCTION.
3522 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3523 :TYPE will no longer signal errors on innocuous objects.
3524 * fixed bug 231b: SETQ is better at respecting type declarations in
3525 the lexical environment.
3526 * fixed a bug in DEFCLASS: classes named by symbols with no or
3527 unprintable packages can now be defined.
3528 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3529 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3530 * fixed compiler failure related to checking types of functions.
3531 (reported by Robert E. Brown)
3532 * the compiler is now much more consistent in its error-checking
3533 treatment of bounding index arguments to sequence functions: in
3534 (SAFETY 3) code, errors will be signalled in almost all cases if
3535 invalid sequence bounding indices are passed to functions defined
3536 by ANSI to operate on sequences.
3537 * fixed a bug in the build procedure: documentation of SBCL-specific
3538 packages is now preserved and available in the final Lisp image.
3539 * lifted FDEFINITION lookup out of loops in the implementation of
3540 many list operations. (thanks to Robert E. Brown)
3541 * fixed a bug in the reader: the #n# reader macro now works for
3542 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3543 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3544 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3545 E. Brown and Tony Martinez respectively)
3546 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3547 SLOT-BOUNDP: in particular, it is now able to optimize them much
3548 better, and is now not vulnerable to having packages renamed.
3549 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3550 always called when a slot is not present in an instance. (thanks
3552 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3553 longer signal an error on unreading a character following EOF on
3554 the previous constituent stream. (thanks to Tony Martinez)
3555 * fixed some bugs revealed by Paul Dietz' test suite:
3556 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3557 not just nonnegative fixnums;
3558 ** the logical bit-array operators such as BIT-AND now accept an
3559 explicit NIL for their "opt-arg" argument (to indicate a
3560 freshly-consed result bit-array);
3561 ** ELT now signals an error on an invalid sequence index in safe
3563 ** the type system is now cleverer about negations of numeric
3564 types, and consequently understands the BIGNUM and RATIO types
3566 ** the type system is now cleverer about the interaction between
3567 INTEGER and RATIO types: while bugs still remain, many more
3568 cases are accurately computed;
3569 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3570 if it is in the last clause;
3571 ** CONSTANTLY now correctly returns a side-effect-free function in
3573 ** DECLARE is no longer treated as a special-operator; in
3574 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3575 * incremented fasl file version number due to the change in the
3576 DEFSTRUCT-SLOT-DESCRIPTION structure.
3578 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3579 * minor incompatible change: code processed by the "interpreter" or
3580 EVAL now has a compilation optimization policy of (DEBUG 2)
3581 (changed from (DEBUG 1)) to improve debuggability of interactive
3582 development, and to allow the use of the debug RETURN command in
3584 * an experimental implementation of the RETURN command for the
3585 debugger has been included. (thanks to Frederik Kuivinen)
3586 * fixed bug 62: constraints were not propagated into a loop.
3587 * fixed bug in embedded calls of SORT (reported and investigated by
3589 * fixed some bugs revealed by Paul Dietz' test suite:
3590 ** printing and reading of arrays with some dimensions having
3591 length 0 (thanks to Gerd Moellmann);
3592 ** BOA constructor with &AUX argument without a default value does
3593 not cause a type error;
3594 ** CONSTANTP now returns true for all self-evaluating objects.
3596 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3597 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3598 accessors that are related by inheritance, as specified in the
3599 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3600 Valtteri Vuorikoski)
3601 * The compiler is now able to inline functions that were defined in
3602 a complex lexical environment (e.g. inside a MACROLET).
3603 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3605 * Support for the upcoming FreeBSD-5.0 release has been included.
3606 (thanks to Dag-Erling Smorgrav)
3607 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3608 effect when it is not in a toplevel context.
3609 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3610 stand a better chance of being correct. (thanks to Gerd
3612 * fixed bug in COERCE, which now signals an error on coercing a
3613 rational to a bounded real type which excludes the expected
3615 * The compiler is now able to derive types more accurately from the
3616 COERCE and COMPILE functions.
3617 * fixed bug 223: functional binding is considered to be constant
3618 only for symbols in the CL package.
3619 * fixed bug 231: SETQ did not check the type of a variable being set
3620 (reported by Robert E. Brown)
3621 * A new optimization for MAKE-INSTANCE has been included, fixing
3622 various bugs (including relating to :ALLOCATION :CLASS slots and
3623 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3625 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3626 ** As required by ANSI, LOOP now disallows anonymous collection
3627 clauses such as COLLECT I in conjunction with aggregate boolean
3628 clauses such as THEREIS (= I 1);
3629 ** LOOP now signals an error when any variable is reused in the
3630 same loop (including the potentially useful construct analogous
3631 to WITH A = 1 WITH A = (1+ A);
3632 ** IT is only a special loop symbol within the first clause of a
3633 conditional loop clause;
3634 ** LOOP with a typed iteration variable over a hashtable now
3635 signals a type error iff it should.
3636 * fixed some other bugs revealed by Paul Dietz' test suite:
3637 ** FILE-STREAM now names the class previously known as FD-STREAM;
3638 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3639 argument) no longer signals an error;
3640 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3641 of the slot symbol, rather than using the current package
3642 ((:CONC-NAME "") continues to intern the slot's name in the
3644 * incremented fasl file version number, because of the incompatible
3645 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3646 of the new implementation of DEFINE-COMPILER-MACRO.
3648 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3649 * Support for building SBCL for MIPS platforms running in
3650 little-endian mode has now been checked in, and basic
3651 functionality on said platforms verified.
3652 * minor incompatible change: PCL now records the pathname of a file
3653 in which methods and the like are defined, rather than its
3655 * minor incompatible change: TRUENAME now considers the truename of
3656 a file naming a directory to be the pathname with :DIRECTORY
3657 component indicating that directory.
3658 * minor incompatible change: a NAMED clause in the extended form of
3659 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3660 reason for the previous behaviour is unclear.
3661 * more systematization and improvement of CLOS and MOP conformance
3662 in PCL (thanks to Gerd Moellman and Pierre Mai):
3663 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3665 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3666 primary methods with no specializers;
3667 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3669 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3670 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3671 FORWARD-REFERENCED-CLASSes; error reporting on
3672 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3674 ** SXHASH on CLOS instances now uses a slot internal to the
3675 instance to return different numbers on distinct instances,
3676 while preserving the same return value through invocations of
3678 ** DEFMETHOD signals errors when methods with longer incongruent
3679 lambda lists are added to generic functions;
3680 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3681 CLASS, as specified in AMOP;
3682 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3683 on the order returned by the primary method for classes of
3684 class STANDARD-CLASS;
3685 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3686 * fixed some bugs shown by Paul Dietz' test suite:
3687 ** DOLIST puts its body in TAGBODY;
3688 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3690 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3691 value producing form;
3692 ** if more variables are given to PROGV than values, extra
3693 variables are bound and made to have no value;
3694 ** NSUBSTITUTE on list arguments gets the right answer with
3696 ** ELT signals an error of type TYPE-ERROR when the index argument
3697 is not a valid sequence index;
3698 ** LOOP signals (at macroexpansion time) an error of type
3699 PROGRAM-ERROR when duplicate variable names are found;
3700 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3701 ** FUNCALL of special-operators now cause an error of type
3703 ** PSETQ now works as required in the presence of side-effecting
3704 symbol-macro places;
3705 ** NCONC accepts any object as its last argument;
3706 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3708 ** loop-for-as-package does not require a package to be explicitely
3710 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3712 * fixed bug 166: compiler preserves "there is a way to go"
3713 invariant when deleting code.
3714 * fixed bug 172: macro lambda lists with required arguments after
3715 &REST arguments now cause an error to be signalled. (thanks to
3717 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3718 bug. (thanks to Matthew Danish)
3719 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3721 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3722 arguments are lexically rebound. (thanks to Gerd Moellmann and
3724 * fixed bug 194: error messages are now more informative when there
3725 is no primary method applicable in a call to a generic
3726 function. (thanks to Gerd Moellmann)
3727 * fixed bug in command line argument checking (thanks to Julian
3729 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3730 (thanks to Matthew Danish)
3731 * incremented fasl file version number, because of the
3732 SXHASH-related changes in the layout of CLOS data structures
3734 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3735 * minor incompatible change: The runtime (the Unix executable named
3736 "sbcl") is now much pickier about the .core files it will load.
3737 Essentially it now requires .core files to descend from the same
3738 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3739 as the runtime does. (The intent is to prevent the crashes which
3740 can occur, and which can even be reported as mysterious failures,
3741 when people patch the sources or change the build parameters
3742 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3743 sbcl and .core files.)
3744 * fixed bug: VALUES-LIST is no longer optimized away.
3745 * fixed bug 142: The FFI conversion of C string values to Lisp
3746 string values no longer conses excessively. (thanks to Nathan
3747 Froyd porting Raymond Toy's fix to CMU CL)
3748 * began to systematize and improve MOP conformance in PCL (thanks to
3749 Nathan Froyd, Gerd Moellman and Pierre Mai):
3750 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3752 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3753 ** FINALIZE-INHERITANCE is now called on class finalization;
3754 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3755 argument precedence order.
3756 * fixed bug 202: The compiler no longer fails on functions whose
3757 derived types contradict their declared type.
3758 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3759 so it can be non-toplevel.
3760 * The fasl file version number has changed (because of the new
3761 implementation of DEFMACRO).
3762 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3763 safe code, that any length requirement by their type-specifier
3764 argument is valid. The exceptions to this are described in bug
3766 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3767 functions now check the types of their inputs as required by ANSI.
3768 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3769 introduced symbol is DECLAREd to be SPECIAL.
3770 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3771 * fixed bug: :COUNT argument to sequence functions may be negative
3772 * fixed bug: body of DO-SYMBOLS may contain declarations
3773 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3774 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3775 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3776 symbol macro only once
3777 * fixed printing of call frame when argument list is unavailable
3778 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3779 * compiler no longer signals WARNING on unknown keyword
3782 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3783 * A beta-quality port to the mips architecture running Linux,
3784 based on the old CMUCL backend, has been made. It has been tested
3785 on a big-endian kernel, and works sufficiently well to be able to
3786 rebuild itself; it has not been tested in little-endian mode.
3787 * fixed an inconsistency between gencgc.c and purify.c which made
3788 dumping/loading .core files unreliable
3789 * fixed bug 120a: The compiler now deals correctly with IFs where
3790 the consequent is the same as the alternative, instead of
3791 misderiving the return type. (thanks to Alexey Dejneka)
3792 * fixed bug 113: Logical pathnames are now dumpable (the logical
3793 host is resolved at load-time, throwing an error if it is not
3795 * fixed bug 174: FORMAT's error message is slightly clearer when a
3796 non-printing character is used in a format directive.
3797 * fixed several bugs in compiler checking of type declarations, i.e.
3798 violations of the Python "declarations are assertions" principle
3799 (thanks to Alexey Dejneka)
3800 * fixed several bugs in PCL's error checking (thanks to Gerd
3802 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3804 * fixed bug in compilation of functions as first class values
3805 (thanks to Antonio Martinez-Shotton)
3806 * The compiler's handling TYPE-ERRORs which it can prove will
3807 inevitably happen at runtime has been cleaned up and corrected
3808 in several ways. (thanks to Alexey Dejneka)
3809 * improved argument type checking for various basic arithmetic
3810 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3811 lavished on them in the past that they can be compiled in many
3812 ways in different special cases
3813 * fixed bug 181: compiler checks validity of user supplied type
3815 * cleaned up code flushing in optimization: Function calls which
3816 should signal errors for safety purposes (e.g. which ANSI says
3817 should signal errors when their arguments are of incorrect type)
3818 are no longer optimized away.
3819 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3820 * incremented fasl file version number, because changes in the
3821 implementation of sequence functions like COERCE caused
3822 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3823 in old inline expansions) to become undefined. (Actually these
3824 changes were later undone, so we might very well be binary
3825 compatible with 0.7.7 after all, but leaving the version number
3826 incremented seemed like the simplest and most conservative
3829 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3830 * An alpha-quality port to the parisc architecture running Linux,
3831 based on the old CMUCL backend, has been made. This, even more so
3832 than the other backends, should be considered still a work in
3833 progress; known problems include that the Linux kernel in 64-bit
3834 mode does not propagate the correct sigcontext structure to
3835 userspace, and consequently SBCL on a parisc64 kernel will not
3837 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3838 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3839 suppressed.) Also now that the compiler is looking at declarations
3840 in the environment, it checks optimization declarations as well,
3841 and suppresses inlining when (> DEBUG SPEED).
3842 * More fixes have been made to treatment of floating point exception
3843 treatment and other Unix signals. In particular, floating point
3844 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3845 * The detection and handling of control stack exhaustion (infinite
3846 or very deeply nested recursion) has changed. Stack exhaustion
3847 detection is now done by write-protecting pages at the OS level
3848 and applies at all optimization settings; when found, a
3849 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3850 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3851 be caught using IGNORE-ERRORS.
3852 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3853 correctly when transforming recursive LABELS functions to LETs.
3854 (thanks to Alexey Dejneka)
3855 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3856 that are names of constants or global variables.
3857 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3858 alien routines with docstrings.
3859 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3860 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3862 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3863 (thanks to Eric Marsden)
3864 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3865 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3866 * Bug fix: The SPARC backend can now compile functions involving
3867 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3868 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3869 to a functions expecting a PATHNAME-DESIGNATOR.
3870 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3871 lambda lists. (thanks to Alexey Dejneka)
3872 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3873 functions so that EXPORTing the name of the class doesn't cause
3874 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3875 to Antonio Martinez for reporting this)
3876 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3877 constant-folded without failing an assertion. (thanks to Einar
3878 Floystad Dorum for reporting this)
3879 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3880 types are now dealt with more correctly by the compiler.
3881 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3882 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3883 behaviour analogous to RENAME-FILE. This puts its behaviour more
3884 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3886 * The fasl file version number has changed again. (because of the
3887 bug fix involving the names of PCL MAKE-INSTANCE functions)
3889 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3890 * bug fix: Floating point exceptions are treated much more
3891 consistently on the x86/Linux and PPC/Linux platforms.
3892 * Array initialization with :INITIAL-ELEMENT is now much faster for
3893 cases when the compiler cannot open code the array creation, but
3894 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3895 array accesses have also seen a speed increase.
3896 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3897 specified. (This was at the root of some bad interactions between
3898 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3900 * bug fix: Internal error arguments for undefined functions are now
3901 computed correctly on the PPC/Linux platform.
3902 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3903 Raymond Toy's patch for CMU CL)
3904 * Support for the Solaris 9 operating environment has been included
3905 (thanks to Daniel Merritt)
3906 * A very ugly but hopefully complete draft of the missing FFI chapter
3907 of the manual has been created by reformatting the corresponding
3908 CMU CL manual chapter into (currently very ugly and incoherent)
3909 DocBook and bringing it up to date for SBCL behavior. Thus, the
3910 manual is now essentially complete, at least by my extreme
3911 once-and-only-once standards, whereby it's acceptable to refer to
3912 the doc strings of SB-EXT functions as the primary documentation.
3913 * The fasl file version number has changed again, due to cleanup of
3914 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3915 is no longer a static symbol.)
3917 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3918 * SBCL now builds with OpenMCL (version 0.12) as the
3919 cross-compilation host; also, more progress has been made toward
3920 bootstrapping under CLISP.
3921 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3923 * bug 158 fixed: The compiler can now deal with integer loop
3924 increments different from 1; fixing this turned out also to fix
3926 * bug 169 fixed: no more bogus warnings about using lexical bindings
3927 despite the presence of perfectly good SPECIAL declarations (thanks
3928 to David Lichteblau)
3929 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3930 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3931 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3933 * bug 180 fixed: Method combination specifications no longer ignore
3934 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3935 * bug fix: Structure type predicate functions now check their argument
3936 count as they should.
3937 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3938 correctly. (thanks to Pierre Mai)
3939 * minor incompatible change: The --noprogrammer option is deprecated
3940 in favor of the new --disable-debugger option, which is very similar.
3941 (The major difference is that it takes effect at a slightly different
3942 time at startup, causing handling of errors in --sysinit and
3943 --userinit files will be affected differently.) The
3944 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3945 been added to allow this functionality to be controlled from ordinary
3946 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3947 maintainers, who might want to run non-interactive scripts to
3948 build SBCL cores which will later be used interactively.)
3949 * minor incompatible change: The LOAD function no longer, when given
3950 a wild pathname to load, loads all files matching that pathname.
3951 Instead, an error of type FILE-ERROR is signalled.
3953 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3954 * bug 147 fixed: The compiler preserves its block link/count
3955 invariants more correctly now so that it doesn't crash. (thanks
3957 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3959 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3960 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3961 no-value-for-this-character as NIL (as specified by ANSI).
3962 * HOST-NAMESTRING on physical pathnames now returns a string that is
3963 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3964 (thanks to Christophe Rhodes)
3965 * The Alpha port handles icache flushing more correctly. (thanks to
3967 * More progress has been made toward bootstrapping under CLISP. (thanks
3968 to Christophe Rhodes)
3969 * The fasl file format has changed again, because dynamic loading
3970 on OpenBSD (which has non-ELF object files) motivated some cleanups
3971 in the way that foreign symbols are transformed and passed around.
3972 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3973 is no longer treated as whitespace by the reader, but instead as
3974 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3975 |A
\7fB|, instead of A as it used to.
3977 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3978 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3979 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3980 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3981 this as of 0.7.1.45, but was left out of the previous news section
3982 (thanks to Dan Barlow)
3983 * SBCL now runs on the Solaris operating system on SPARC architectures
3984 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3985 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3986 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3987 * SPARC backend cleanups, allowing builds of cores optimized for V8
3988 and V9 SPARCS, and also emission of code targeted to a particular
3989 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3991 * SBCL is closer to bootstrapping under CLISP, thanks to various
3992 fixes by Christophe Rhodes.
3993 * The fasl file format has changed again, to allow the compiler's
3994 INFO database to support symbol macros.
3995 * The user manual (in doc/) is formatted into HTML more nicely.
3996 (thanks to coreythomas)
3997 * The system is smarter about SUBTYPEP relationships, especially
3998 those involving NOT types (including types such as ATOM which are
3999 represented internally using NOT types). Thus SUBTYPEP is less
4000 likely to return (VALUES NIL NIL) in general, and in particular
4001 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4003 * The fasl file format has changed again, because the internal
4004 representation of types now includes a new slot to support the new
4005 SUBTYPEP-of-NOT-types logic.
4006 * (not a change in the main branch of SBCL, but a related prototype
4007 which can hopefully be merged into the main branch of SBCL in the
4008 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4009 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4010 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4011 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4012 dispatch macro character combinations. (thanks to Alexey Dejneka)
4013 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4014 that superficially look like logical namestrings correctly.
4015 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4017 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4018 default supplied-p) for &optional and &key arguments. (thanks to
4021 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4022 * incompatible change: The compiler is now less aggressive about
4023 tail call optimization, doing it only when (> SPACE DEBUG) or
4024 (> SPEED DEBUG). (This is an incompatible change because there are
4025 programs which relied on the old CMU-CL-style behavior to optimize
4026 away their unbounded recursion which will now die of stack overflow.)
4027 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4028 for non-GENCGC systems has been increased to 20M (since that
4029 seems much closer to the likely performance optimum for modern
4030 systems than the old 4M value was)
4031 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4032 and *DEBUG-PRINT-LEVEL*
4033 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4034 of CMU CL's support for SPARC, and various endianness and other
4035 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4036 * new syntactic sugar for the Unix command line: --load foo.bar is now
4037 an alternate notation for --eval '(load "foo.bar")'.
4039 ** The system now detects stack overflow and handles it gracefully,
4040 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4041 optimization settings. (This is a good thing in general, and
4042 its introduction in this version should be particularly timely
4043 for anyone whose code fails because of suppression of tail
4045 ** The system now hunts for the C variable "environ" in a more
4046 devious way, to avoid segfaults when the C library version differs
4047 between compile time and run time. (thanks to Christophe Rhodes)
4048 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4049 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4050 ** The compiler no longer issues bogus style warnings for undefined
4051 classes in the same source file as the DEFCLASSes which defined
4052 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4054 ** fixes in CONDITION class precedence list for undefined function
4055 errors (thanks to Alexei Dejneka)
4056 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4057 correctly. (thanks to Dan Barlow)
4058 ** portability fixes aiming at bootstrapping under CLISP (thanks
4059 to Dave McDonald and Christophe Rhodes)
4060 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4061 ** fixes in type translation and and type inference (thanks to
4063 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4064 ** various fixes in the new ports (thanks to Dan Barlow)
4065 * several changes related to debugging:
4066 ** suppression of tail recursion, as noted above
4067 ** stack overflow detection, as noted above
4068 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4069 is now the default. (For some time encapsulation has been more
4070 reliable than the breakpoint-based :ENCAPSULATE NIL
4071 implementation, at least on X86 systems; and I just noticed that
4072 encapsulation also seems closer to the spirit of the ANSI
4075 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4077 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4078 up properly again. (There was a packaging bug in 0.7.0 which
4079 left their definitions in SB-SYS::LOAD-FOREIGN and
4080 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4081 vital for most things which interface to C-level interfaces,
4082 like extensions working with sockets or databases or
4083 Perl-compatible regexes or whatever, and the need to fix
4084 this bug is the main reason that 0.7.1 was released so
4086 ** DEFGENERIC is now choosier about the methods it redefines, so that
4087 reLOADing a previously-LOADed file containing DEFGENERICs does
4088 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4089 cycle now works as it should. (thanks to Alexey Dejneka)
4090 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4091 fixed by Christophe Rhodes. (He actually submitted this patch
4092 months ago, and I delayed until after 0.7.0.)
4093 ** Bug 111 (internal compiler confusion about runtime checks on
4094 FUNCTION types) was fixed by Alexey Dejneka.
4095 * Some internal cleanups (getting rid of variables which aren't
4096 needed now that the byte interpreter is gone) caused the fasl
4097 file format number to change again.
4099 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4100 * major incompatible change: The default fasl file extension, i.e. the
4101 default extension for files produced by COMPILE-FILE, has changed
4102 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4104 ** There are many changes in the implementation of the compiler.
4105 SBCL is now essentially a compiler-only implementation of ANSI
4106 Common Lisp. EVAL still "interprets" a few special cases, but
4107 almost all the interesting cases are handled by creating
4108 a LAMBDA expression, calling COMPILE on it, then calling
4109 FUNCALL on the result.
4110 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4111 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4112 Since the code is newer, there might still be some new bugs
4113 (though not as many as before Martin Atzmueller's fixes:-). But
4114 the new code is substantially simpler and clearer, and hopefully
4115 any remaining bugs will be simpler, less fundamental, and more
4116 fixable then the bugs in the old code.
4117 ** The revised compiler is still a little unsteady on its feet.
4119 *** The debugging information it produces (particularly the names
4120 of FUNCTION objects) is sometimes much less useful than what
4121 the old compiler produced.
4122 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4123 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4124 within a MACROLET) has been temporarily weakened.
4125 ** There are new compiler optimizations for various functions:
4126 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4127 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4128 *** the math functions TRUNCATE, FLOOR, and CEILING
4129 *** the function-of-all-trades COERCE
4130 Mostly these should be transparent, but there's one
4131 potentially-annoying problem (bug 117): when the compiler
4132 inline-expands a function and does type analysis on the result,
4133 it can create control paths which have type mismatches, and
4134 when it can't prove that those control paths aren't taken,
4135 it will issue WARNINGs about the type mismatches. This is
4136 a particular problem in practice for the new sequence functions.
4137 It's not clear how this should be fixed, and for now, a
4138 workaround is given in the entry for 117 in the BUGS file.
4139 ** (Because of the interaction between the two previous items --
4140 occasional inlining problems and new inline expansions -- some
4141 of the new sequence function optimizations won't really kick in
4142 completely until debugging information, and then inlining, are
4143 straightened out in some future version.)
4144 * minor incompatible changes:
4145 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4146 DIRECTORY no longer implicitly promotes NIL slots of its
4147 pathname argument to :WILD. In particular, when you ask for the
4148 contents of a directory (which you used to be able to do without
4149 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4150 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4151 ** changes in behavior that ANSI explicitly defines to be
4152 implementation dependent:
4153 *** The new compiler-only implementation still conforms with ANSI,
4154 but acts a little different than before. Besides the obvious
4155 changes in performance tradeoffs (that the cost per form passed
4156 to EVAL has gone up, and the cost per form executed by EVAL
4157 has gone down), the behavior of the system changes a little
4158 because there are no longer any interpreted function objects.
4159 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4160 e.g. doing COMPILE on the output of interactive DEFUN is
4162 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4164 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4165 has changed from (:CL) to NIL.
4166 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4167 e.g. #\Newline and #\Tab, don't have names specified in the
4168 ANSI Common Lisp standard, is now based on their ASCII symbolic
4169 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4170 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4171 are no longer used for output.
4172 ** changes in internal implementation constants:
4173 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4174 4 million. (If your application spends a lot of time GCing and
4175 you have a lot of RAM, you might want to experiment with
4176 increasing it even more.)
4177 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4178 However, almost all old code should still continue to work without
4179 immediate update, as SB-C-CALL is now a (deprecated) nickname
4181 ** Old operator names in the style DEF-FOO are now deprecated in
4182 favor of new corresponding names DEFINE-FOO, for consistency with
4183 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4184 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4185 internal symbols, but a few supported extensions like
4186 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4187 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4188 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4189 etc. as you get deeper into recursive calls to the debugger
4190 command loop, instead of the old "5]", "5]]", "5]]]"
4191 sequence. (I was motivated to do this when squabbles between
4192 ILISP and SBCL left me very deeply nested in the debugger. In the
4193 short term, this change will probably provoke more ILISP/SBCL
4194 squabbles, but hopefully it will be an improvement in the long run.)
4195 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4196 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4197 function, since declaiming return types involving aliens is
4198 (1) annoyingly messy to do by hand and (2) vital to efficient
4199 compilation of code which calls such functions.
4200 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4201 longer reexported by the SB-EXT package. They're solely useful
4202 for alien code, so it seems more logical that you should get
4203 them from the SB-ALIEN package, not in SB-EXT.
4204 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4205 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4206 features. Instead, the code that they used to control is always
4207 built into the system.
4208 * many other bug fixes
4209 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4210 advantage of the new EVAL-WHEN stuff and to clean them up in
4211 general, and they are now more ANSI-compliant in a number of
4212 ways. Martin Atzmueller is responsible for a lot of this.
4213 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4215 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4216 *** correct ERROR type for various file operations
4217 *** some fixes for Lisp streams
4218 *** DEFMETHOD syntax checking
4219 *** changing old weird representation of debug information as
4220 strings (which, among their other deficiencies, don't transform
4221 correctly when you rename packages, and don't change their
4222 print representation when you change things like *PACKAGE*
4223 and *PRINT-LENGTH*) to symbols and lists of symbols
4224 He also made several improvements and fixed several bugs in DESCRIBE.
4225 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4227 *** misbehavior of WRITE-STRING/WRITE-LINE
4228 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4229 and several other LOOP problems as well
4230 *** DIRECTORY when similar filenames are present
4231 *** DEFGENERIC with :METHOD options
4232 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4233 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4234 *** argument ordering in FIND with :TEST option
4235 *** mishandled package designator argument in APROPOS-LIST
4236 *** various problems in the backquote readmacro
4237 *** a bug in APROPOS
4238 *** probably some others that I'm not describing very well here,
4239 since the CVS log documents them by reference to sbcl-devel
4240 messages, and the SourceForge archives aren't working well.:-(
4241 ** Dan Barlow improved the Alpha port (and is making progress on the
4242 PPC port, for those of you who think different).
4243 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4244 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4245 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4246 continues to work on the SPARC port (for those of you in a position
4247 to look down upon our little PC-compatible boxes from a great height).
4248 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4249 and uses that copy, rather than the current dynamic value, when
4250 it's trying to decide whether to truncate output. Thus e.g.
4251 (let ((*print-lines* 50))
4252 (pprint-logical-block (stream nil)
4254 (let ((*print-lines* 8))
4255 (print (aref possiblybigthings i) stream)))))
4256 should now truncate the logical block only at 50 lines, instead of
4257 often truncating it at 8 lines, as it did before.
4258 * The doc/cmucl/ directory, containing old CMU CL documentation
4259 from the time of the fork, is no longer part of the base system.
4260 SourceForge has shut down its anonymous FTP service, and with it
4261 my original plan for distributing the old CMU CL documentation
4262 there. For now, if you need these files you can download an old
4263 SBCL source release and extract them from it.
4264 * The fasl file version number changed again, for dozens of reasons,
4265 some of which are apparent above.
4267 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4268 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4269 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4270 patch, so that DISASSEMBLE output is much nicer.
4271 * The code in the SB-PROFILE package now seems reasonably stable.
4272 I still haven't decided what the final interface should look like
4273 (I'd like PROFILE to interact cleanly with TRACE, since both
4274 facilities use function encapsulation) but if you have a need
4275 for profiling now, you can probably use it successfully with
4276 the current CMU-CL-style interface.
4277 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4278 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4279 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4280 link now returns the dangling link itself, and for similar
4281 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4282 link itself. (In these cases the old code signalled an error and
4283 looped endlessly, respectively.) Thus, DIRECTORY now works even
4284 in the presence of dangling and cyclic symbolic links.
4285 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4286 is now a supported extension again, since the consensus on
4287 sbcl-devel was that it can be useful for ordinary development
4288 work, not just for debugging SBCL itself.
4289 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4290 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4291 that currently-defined functions might be redefined later with
4292 different return types.
4293 * Hash tables can be printed readably, as inspired by CMU CL code
4294 of Eric Marsden and SBCL code of Martin Atzmueller.
4295 * better error handling in CLOS method combination, thanks to
4296 Martin Atzmueller porting Pierre Mai's CMU CL patches
4297 * more overflow fixes for >16Mbyte I/O buffers
4298 * A bug in READ has been fixed, so that now a single Ctrl-D
4299 character suffices to cause end-of-file on character streams.
4300 In particular, now you only need one Ctrl-D at the command
4301 line (not two) to exit SBCL.
4302 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4304 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4305 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4306 does the right thing.
4307 * The implementation of some type tests, especially for CONDITION
4308 types, is now tidier and maybe faster, due to CMU CL code
4309 originally by Douglas Crosher, ported by Martin Atzmueller.
4310 * Some math functions have been fixed, and there are new
4311 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4312 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4313 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4314 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4315 likely to be built into sbcl-0.7.0.)
4316 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4317 CL, ported to SBCL by Martin Atzmueller)
4318 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4319 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4320 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4321 * There's a new slam.sh hack to shorten the edit/compile/debug
4322 cycle for low-level changes to SBCL itself, and a new
4323 :SB-AFTER-XC-CORE target feature to control the generation of
4324 the after-xc.core file needed by slam.sh.
4325 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4326 COMPILE-FILE is no longer supported, so that now every function
4327 gets an entry point, so that block compilation looks a little
4328 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4329 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4330 returns the number of bytes consed since the system started,
4331 rather than the number consed since the first time the function
4332 was called. (The new definition parallels ANSI functions like
4333 CL:GET-INTERNAL-RUN-TIME.)
4334 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4335 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4336 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4337 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4338 * Fasl file version numbers are now independent of the target CPU,
4339 since historically most system changes which required version
4340 number changes have affected all CPUs equally. Similarly,
4341 the byte fasl file version is now equal to the ordinary
4344 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4345 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4346 is no longer recognized. I apologize for this, because it was
4347 listed in SB-EXT as a supported extension, but I found that
4348 its existing behavior was poorly specified, as well as incorrectly
4349 specified, and it looked like too much of a mess to straighten it
4350 out. I have enough on my hands trying to get ANSI stuff to work..
4351 * many patches ported from CMU CL by Martin Atzmueller, with
4352 half a dozen bug fixes in pretty-printing and the debugger, and
4353 half a dozen others elsewhere
4354 * fixed bug 13: Floating point infinities are now supported again.
4355 They might still be a little bit flaky, but thanks to bug reports
4356 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4357 as flaky as they were.
4358 * The --noprogrammer command line option is now supported. (Its
4359 behavior is slightly different in detail from what the old man
4360 page claimed it would do, but it's still appropriate under the
4361 same circumstances that the man page talks about.)
4362 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4363 are now supported, and enabled by default. Thus, the compiler can
4364 handle many floating point and complex operations much less
4365 inefficiently. (Thus e.g. you can implement a complex FFT
4367 * The compiler now detects type mismatches between DECLAIM FTYPE
4368 and DEFUN better, and implements CHECK-TYPE more correctly, and
4369 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4370 thanks to patches from Martin Atzmueller.
4371 * various fixes to make the cross-compiler more portable to
4372 ANSI-conforming-but-different cross-compilation hosts (notably
4373 Lispworks for Windows, following bug reports from Arthur Lemmens)
4374 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4375 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4376 fixed thanks to Pierre Mai's CMU CL patches.
4377 * fixes to keep the system from overflowing internal counters when
4378 it tries to use i/o buffers larger than 16M bytes
4379 * fixed bug 45a: Various internal functions required to support
4380 complex special functions have been merged from CMU CL sources.
4381 (When I was first setting up SBCL, I misunderstood a compile-time
4382 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4383 * improved support for type intersection and union, fixing bug 12
4384 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4385 more obscure bugs as well
4386 * some steps toward byte-compiling non-performance-critical
4387 parts of the system, courtesy of patches from Martin Atzmueller
4388 * Christophe Rhodes has made some debian packages of sbcl at
4389 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4390 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4391 stable, but are nonetheless usable. When he's ready, I'd be happy
4392 to add them to the SourceForge "File Releases" section. (And if
4393 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4394 * new fasl file format version number (because of changes in
4395 internal representation of (OR ..) types to accommodate the new
4396 support for (AND ..) types, among other things)
4398 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4399 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4401 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4403 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4404 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4405 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4406 * DESCRIBE now works on structure objects again.
4407 * Most function call argument type mismatches are now handled as
4408 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4409 know whether the function will be redefined before the call is
4410 executed. (The compiler could flag local calls with full WARNINGs,
4411 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4412 it doesn't keep track of enough information to know whether calls
4413 are local in this sense.)
4414 * Compiler output is now more verbose, with messages truncated
4415 later than before. (There should be some supported way for users
4416 to override the default verbosity, but I haven't decided how to
4417 provide it yet, so this behavior is still controlled by the internal
4418 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4419 src/compiler/ir1util.lisp.)
4420 * Fasl file format version numbers have increased again, because
4421 support for the Gray streams extension changes the layout of the
4422 system's STREAM objects.
4423 * The Gray subclassable streams extension now works, thanks to a
4424 patch from Martin Atzmueller.
4425 * The full LOAD-FOREIGN extension (not just the primitive
4426 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4427 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4428 but like most other programs, it defaults to copying the Unix
4429 environment from the original process instead of starting the
4430 new process in an empty environment.
4431 * Extensions which manipulate the Unix environment now support
4432 an :ENVIRONMENT keyword option which doesn't smash case or
4433 do other bad things. The CMU-CL-style :ENV option is retained
4434 for porting convenience.
4435 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4436 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4438 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4440 * A patch from Martin Atzmueller seems to have solved the SIGINT
4441 problem, and as far as we know, signal-handling now works cleanly.
4442 (If you find any new bugs, please report them!)
4443 * The system no longer defaults Lisp source file names to types
4444 ".l", ".cl", or ".lsp", but only to ".lisp".
4445 * The compiler no longer uses special default file extensions for
4446 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4447 seems to expect a single default extension for all compiled code,
4448 and there's no compelling reason to try to stretch the standard
4449 to allow two different extensions.) Instead, byte-compiled files
4450 default to the same extension as native-compiled files.
4451 * Fasl file format version numbers have increased again, because
4452 a rearrangement of internal implementation packages made some
4453 dumped symbols in old fasl files unreadable in new cores.
4454 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4455 many fewer weird special cases.
4456 * Bug #17 (differing COMPILE-FILE behavior between logical and
4457 physical pathnames) has been fixed, and some related misbehavior too,
4458 thanks to a patch from Martin Atzmueller.
4459 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4460 by Tim Moore, ported to SBCL by Martin Atzmueller.
4461 * Martin Atzmueller fixed several filesystem-related problems,
4462 including bug #36, in part by porting CMU CL patches, which were
4463 written in part by Paul Werkowski.
4464 * More compiler warnings in src/runtime/ are gone, thanks to
4465 more patches from Martin Atzmueller.
4466 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4469 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4471 * DESCRIBE now works on CONDITION objects.
4472 * The debugger now handles errors which arise when trying to print
4473 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4475 * The build system now uses an additional file, customize-target-features.lisp,
4476 to allow local modifications to the target *FEATURES* list. (The point of
4477 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4478 debugging features enabled, without having to worry about propagating it
4479 into everyone's system when I do a "cvs update".) When no
4480 customize-target-features.lisp file exists, the target *FEATURES* list
4481 should be constructed the same way as before.
4482 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4483 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4484 warn about behavior which is undefined under the ANSI spec. Note: This
4485 is specified by ANSI, but it's not very popular with programmers.
4486 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4487 macro in the SBCL sources for an example of a workaround which you
4488 might use to make portable ANSI-standard code which does what you want.
4489 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4490 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4491 when it's used as a non-toplevel form. (This is required in order
4492 to implement the DEFCONSTANT-EQX macro.)
4493 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4494 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4495 funny things, due to bugs in the implementation of EVAL-WHEN
4496 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4497 non-toplevel DEFCONSTANTs are uncommon.)
4498 * The core file version number and fasl file version number have been
4499 incremented, because the old noncompliant DEFCONSTANT behavior involved
4500 calling functions which no longer exist, and because I also took the
4501 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4502 * fixed bug 1 (error handling before read-eval-print loop starts), and
4503 redid debugger restarts and related debugger commands somewhat while
4505 ** The QUIT debugger command is gone, since it did something
4506 rather different than the SB-EXT:QUIT command, and since it never
4507 worked properly outside the main toplevel read/eval/print loop.
4508 Invoking the new TOPLEVEL restart provides the same functionality.
4509 ** The GO debugger command is also gone, since you can just invoke
4510 the CONTINUE restart directly instead.
4511 ** The TOP debugger command is also gone, since it's redundant with the
4512 FRAME 0 command, and since it interfered with abbreviations for the
4514 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4516 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4517 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4518 some porting work by Martin Atzmueller)
4519 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4520 with a boatload of patches which he ported to SBCL. Now that those
4522 ** The system tries to make sure that its low-priority messages
4523 are prefixed by semicolons, to help people who like to use
4524 syntax highlighting in their ILISP buffer. (This patch
4525 was originally due to Raymond Toy.)
4526 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4527 patches originally written by Raymond Toy.
4528 ** The compiler understands coercion between single-value and
4529 multiple-VALUES type expressions better, getting rid of some very
4530 weird behavior, thanks to patches originally by Robert MacLachlan
4531 and Douglas Crosher.
4532 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4533 lambda lists, thanks to a patch originally by Pierre Mai.
4534 ** The system no longer bogusly warns about "abbreviated type
4536 ** The compiler gets less confused by inlining and RETURN-FROM,
4537 thanks to some patches originally by Tim Moore.
4538 ** The system no longer hangs when dumping circular lists to fasl
4539 files, thanks to a patch originally from Douglas Crosher.
4540 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4541 undefined function error.
4542 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4543 in structure slot initforms) for now, documented workaround instead:-|
4544 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4545 * fixed bug 5: added stubs for various Gray stream functions called
4546 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4547 installed, at least appropriate type errors are generated
4548 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4549 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4550 consistently in DEFMETHOD forms.
4551 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4552 it doesn't seem to affect SBCL after all
4553 * The C runtime system now builds with better optimization and many
4554 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4556 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4558 * The system is now under CVS at SourceForge (instead of the
4559 CVS repository on my home machine).
4560 * The new signal handling code has been tweaked to treat register
4561 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4562 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4563 downstream, e.g. in debug-int.lisp, has implicit dependencies
4564 on the unsignedness of integer representation of machine words,
4565 and that caused the system to bomb out with infinite regress
4566 when trying to recover from type errors involving signed values,
4567 e.g. (BUTLAST '(1 2 3) -1).)
4568 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4569 (This was one of the bugs Peter Van Eynde reported back in July.)
4570 * The system now uses code inspired by Colin Walters' O(N)
4571 implementation of MAP (from the cmucl-imp@cons.org mailing
4572 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4573 inline the MAP operation, and there is more than one
4574 sequence argument to the MAP call (so that it can't just
4575 do ETYPECASE once and for all based on the type of the
4576 single sequence argument). (The old non-inline implementation
4577 of the general M-argument sequence-of-length-N case required
4578 O(M*N*N) time when any of the sequence arguments were LISTs.)
4579 * The QUIT :UNIX-CODE keyword argument has been renamed to
4580 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4581 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4583 * Raymond Wiker's patches to port dynamic loading from Linux to
4584 FreeBSD have been added.
4585 * The BUGS file is now more nearly up to date, thanks in large part
4586 to Martin Atzmueller's review of it.
4587 * The debugger now flushes standard output streams before it begins
4588 its output ("debugger invoked" and so forth).
4589 * The core version number and fasl file version number have both
4590 been incremented, because of incompatible changes in the layout
4592 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4593 used to not be called for a saved Lisp image.)
4594 * Martin Atzmueller's version of a patch to fix a compiler crash,
4595 as posted on sbcl-devel 13 September 2000, has been installed.
4596 * Instead of installing Martin Atzmueller's patch for the
4597 compiler transform for SUBSEQ, I deleted the compiler transform,
4598 and transforms for some similar consing operations.
4599 * A bug in signal handling which kept TRACE from working on OpenBSD
4601 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4602 away by constant folding
4603 * The system now defines its address space constants in one place
4604 (in the Lisp sources), and propagates them automatically elsewhere
4605 (through GENESIS and the sbcl.h file). Therefore, patching the
4606 address map is less unnecessarily tedious and error-prone. The
4607 Lisp names of address space constants have also been systematized.
4608 * CVS tags like dollar-Header-dollar have been removed from
4609 the sources, because they have never saved me trouble and
4610 they've been source of trouble working with patches and other
4611 diff-related operations.
4612 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4613 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4615 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4617 * The system has been ported to OpenBSD.
4618 * The system now compiles with a simple "sh make.sh" on the systems
4619 that it's supported on. I.e., now you no longer need to tweak
4620 text in the target-features.lisp-expr and symlinks in src/runtime/
4621 by hand, the make.sh takes care of it for you.
4622 * The system is no longer so grossly inefficient when compiling code
4623 involving vectors implemented as general (not simple) vectors (VECTOR T),
4624 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4625 which dares to use the various sequence functions on non-simple
4626 vectors, takes less of a performance hit.
4627 * There is now a primitive type predicate VECTOR-T-P
4628 to test for the (VECTOR T) type, so that e.g.
4629 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4630 can now be compiled with some semblance of efficiency. (The old code
4631 turned the type declaration into a full call to %TYPEP at runtime!)
4632 * AREF on (VECTOR T) is still not fast, since it's still compiled
4633 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4634 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4635 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4636 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4637 without making full calls to SUBTYPEP at runtime.
4638 (Some analogous efficiency issues for non-simple vectors specialized to
4639 element types other than T, or for non-simple multidimensional arrays,
4640 have not been addressed. They could almost certainly be handled the
4641 same way if anyone is motivated to do so.)
4642 * The changes in array handling break binary compatibility, so
4643 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4644 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4645 instead of (VALUES T T).
4646 * By following the instructions that Dan Barlow posted to sbcl-devel
4647 on 2 July 2000, I was able to enable primitive dynamic object
4648 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4649 functionality is not implemented (since it calls ld to resolve
4650 library references automatically, requiring RUN-PROGRAM for its
4651 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4652 try to resolve library references) is now supported.
4653 * The system now flushes the standard output streams when it terminates,
4654 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4655 them at several other probably-convenient times, e.g. in each pass of
4656 the toplevel read-eval-print loop, and after evaluating a form given
4657 as an "--eval" command-line option. (These changes were motivated by a
4658 discussion of stream flushing issues on cmucl-imp in August 2000.)
4659 * The source transform for TYPEP of array types no longer assumes
4660 that an array whose element type is a not-yet-defined type
4661 is implemented as an array of T, but instead punts, so that the
4662 type will be interpreted at runtime.
4663 * There is now some support for cross-compiling in make.sh: each of
4664 the phases of make.sh has its own script. (This should be transparent
4665 to people doing ordinary, non-cross-compile builds.)
4666 * Since my laptop doesn't have hundreds of megabytes of memory like
4667 my desktop machine, I became more motivated to do some items on
4668 my to-do list in order to reduce the size of the system a little:
4669 ** Arrange for various needed-only-at-cold-init things to be
4670 uninterned after cold init. To support this, those things have
4671 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4672 symbols with such names are now uninterned after cold init).
4673 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4674 fasl files for cold load.
4675 ** Remove the old compiler structure pooling code (which used to
4676 be conditional on the target feature :SB-ALLOC) completely.
4677 ** Redo the representation of some data in cold init to be more compact.
4678 (I also looked into supporting byte compiled code at bootstrap time,
4679 which would probably reduce the size of the system a lot, but that
4680 looked too complicated, so I punted for now.)
4681 * The maximum signal nesting depth in the src/runtime/ support code has
4682 been reduced from 4096 to 256. (I don't know any reason for the very
4683 large old value. If the new smaller value turns out to break something,
4684 I'll probably just bump it back up.)
4685 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4687 * Many, many bugs reported by Peter Van Eynde have been added to
4688 the BUGS list; some have even been fixed.
4689 * While enabling dynamic object file loading, I tried to make the
4690 code easier to understand, renaming various functions and variables
4691 with less ambiguous names, and changing some function calling
4692 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4693 * While trying to figure out how to do the OpenBSD port, I tried to
4694 clean up some of the code in src/runtime/. In particular, I dropped
4695 support for non-POSIX signal handling, added various comments,
4696 tweaked the code to reduce the number of compilation warnings, and
4697 renamed some files to increase consistency.
4698 * To support the new automatic configuration functionality in make.sh,
4699 the source file target-features.lisp-expr has been replaced with the
4700 source file base-target-features.lisp-expr and the machine-generated
4701 file local-target-features.lisp-expr.
4702 * fixed a stupid quoting error in make.sh so that using CMU CL
4703 "lisp -batch" as cross-compilation host works again
4705 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4707 * DESCRIBE no longer tries to call itself recursively to describe
4708 bound/fbound values, so that it no longer fails on symbols which are
4709 bound to themselves (like keywords, T, and NIL).
4710 * DESCRIBE now works on generic functions.
4711 * The printer now prints less-screwed-up representations of closures
4712 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4713 * A private symbol is used instead of the :EMPTY keyword previously
4714 used to mark empty slots in hash tables. Thus
4715 (DEFVAR *HT* (MAKE-HASH-TABLE))
4716 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4717 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4718 now does what ANSI says that it should. (You can still get
4719 similar noncompliant behavior if bang on the hash table
4720 implementation with all the symbols you get back from
4721 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4722 This breaks binary compatibility, since tests for equality to
4723 :EMPTY are wired into things like the macroexpansion of
4724 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4726 * There's now a minimal placeholder implementation for CL:STEP,
4727 as required by ANSI.
4728 * An obscure bug in the interaction of the normal compiler, the byte
4729 compiler, inlining, and structure predicates has been patched
4730 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4731 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4733 * Missing ordinary arguments in a macro call are now detected even
4734 when the macro lambda list contains &KEY or &REST.
4735 * The debugger no longer complains about encountering the top of the
4736 stack when you type "FRAME 0" to explicitly instruct it to go to
4737 the top of the stack. And it now prints the frame you request even
4738 if it's the current frame (instead of saying "You are here.").
4739 * As specified by ANSI, the system now always prints keywords
4740 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4742 * The default initial SIZE of HASH-TABLEs is now smaller.
4743 * Type information from CLOS class dispatch is now propagated
4744 into DEFMETHOD bodies, so that e.g.
4745 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4747 is now basically equivalent to
4748 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4749 (DECLARE (TYPE SINGLE-FLOAT X))
4751 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4752 operation, without having to do run-time type dispatch.
4753 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4754 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4755 * Since I don't seem to be making big file reorganizations very often
4756 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4757 is overflowing my ability to conveniently back them up), I've finally
4758 checked the system into CVS. (The CVS repository is on my home system,
4759 not at SourceForge -- putting it on SourceForge might come later.)
4760 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4761 high-level GC-NOTIFY-FOO functions send their output. (There's
4762 still very little control of where low-level verbose GC functions
4763 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4764 less than it used to -- the GC-NOTIFY-FOO functions are now under
4765 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4766 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4767 in only one place in the source code, and propagates it automatically
4768 everywhere that it's needed. Thus e.g. when I bump the version from
4769 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4770 * The C source files now include boilerplate legalese and documentation
4771 at the head of each file (just as the Lisp source files already did).
4772 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4773 to his page will be replaced with a link to his new CLiki service.
4775 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4777 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4778 * The build process now looks for GNU make under the default name "gmake",
4779 instead of "make" as it used to. If GNU make is not available as "gmake"
4780 on your system, you can change this default behavior by setting the
4781 GNUMAKE environment variable.
4782 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4783 can build without error under CMU CL.
4785 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4787 * There is now a partial SBCL user manual (with some new text and some
4788 text cribbed from the CMU CL manual).
4789 * The beginnings of a profiler have been added (starting with the
4790 CMU CL profiler and simplifying and cleaning up). Eventually the
4791 main interface should be through the TRACE macro, but for now,
4792 it's still accessed through vaguely CMU-CL-style functions and macros
4793 exported from the package SB-PROFILE.
4794 * Some problems left over from porting CMU CL to the new
4795 cross-compilation bootstrap process have been cleaned up:
4796 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4797 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4798 part when getting rid of the compiler *BACKEND* stuff.)
4799 ** The value of *NULL-TYPE* was screwed up, because it was
4800 being initialized before the type system knew the final
4801 definition of the 'NULL type. This screwed up several key
4802 optimizations in the compiler, causing inefficiency in all sorts
4803 of places. (I found it because I wanted to understand why
4804 GET-INTERNAL-RUN-TIME was consing.)
4805 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4806 PROCLAIM FTYPE information. Unfortunately this broke binary
4807 compatibility again, since now the forms output by DEFGENERIC
4808 to refer to functions which didn't exist in 0.6.3.
4809 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4810 can use the new (as of 0.6.3) transform for SOME into MAP into
4812 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4813 values to (INTEGER 0 1000000), so that the time code will no longer
4814 occasionally get blown up by Linux returning 1000000 microseconds
4815 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4816 its output conform to the ANSI spec. (Alas, this makes its output
4817 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4818 * A full call to MAP NIL with a single sequence argument no longer conses.
4819 * fixes to problems pointed out by Martin Atzmueller:
4820 * The manual page no longer talks about multiprocessing as though
4821 it were currently supported.
4822 * The ILISP support patches have been removed from the distribution,
4823 because as of version 5.10.1, ILISP now supports SBCL without us
4824 having to maintain patches.
4825 * added a modified version of Raymond Toy's recent CMU CL patch for
4826 EQUALP comparison of HASH-TABLE
4828 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4830 * The system still can't cross-compile itself with
4831 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4832 entails), but at least it can compile more of itself that way
4833 than it used to be able to, and various buglets which were uncovered
4834 by trying to cross-compile itself that way have now been fixed.
4835 * This release breaks binary compatibility again. This time
4836 at least I've incremented the FASL file format version to 2, so that the
4837 problem can be detected reliably instead of just causing weird errors.
4838 * various new style warnings:
4839 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4840 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4841 ** using the lexical binding of a variable named in the *FOO* style
4842 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4843 as specified by ANSI.
4844 * *RANDOM-STATE* is no longer automatically initialized from
4845 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4846 default behavior of the system is to repeat its behavior every time
4847 it's run. If you'd like to change this behavior, you can always
4848 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4849 old convention there was no comparably easy way to get the system to
4850 repeat its behavior every time it was run.
4851 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4852 FTYPE declarations has been removed, in favor of their ANSI
4853 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4854 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4855 the types of their sequence arguments can be determined at compile time.
4856 This is done through a new open code expansion for MAP which eliminates
4857 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4858 argument types can be determined at compile time.
4859 * The optimizer now transforms COERCE into an identity operation when it
4860 can prove that the coerced object is already of the correct type. (This
4861 can be a win for machine generated code, including the output of other
4862 optimization transforms, such as the MAP transform above.)
4863 * Credit information has been moved from source file headers into CREDITS.
4864 * Source file headers have been made more standard.
4865 * The CASE macro now compiles without complaining even when it has
4868 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4870 * (Note that the way that the PCL macroexpansions were rewritten
4871 to accommodate the change in DEFGENERIC below breaks binary
4872 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4873 not run under sbcl-0.6.2. Once we get out of alpha releases,
4874 i.e. hit release 1.0.0, we'll probably try to maintain binary
4875 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4876 and sbcl-1.4.4. Until then, however, it might be fairly common
4877 for maintenance releases to break binary compatibility.)
4878 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4880 * The reporting of unhandled signals has been changed to print some
4881 explanatory text as well as the report form. (Previously only
4882 the report form was printed.)
4883 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4884 it defines, so that the compiler no longer issues undefined function
4885 warnings for compiled-but-not-yet-loaded generic functions.
4886 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4887 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4888 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4889 section of the ANSI spec are supported.
4890 * The "" nickname for the "KEYWORD" package has been removed.
4891 The reader still handles symbol tokens which begin with a package marker
4892 as keywords, but it doesn't expose its mechanism for doing so in the
4893 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4894 * The system now issues STYLE-WARNINGs for contradictory TYPE
4895 proclamations. (Warnings for contradictory FTYPE proclamations would
4896 be nice too, but those can't be done usefully unless the type system
4897 is made smarter about FUNCTION types.)
4898 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4899 systematized, so that "*target-*.lisp is supposed to exist only on the
4900 target and imply that there's a related file which exists on the
4901 host, and *host-*.lisp is supposed to exist only on the host and imply
4902 that there's a related file which exists on the target. This involves a
4903 lot of renaming. Hopefully the acute confusion caused by the renaming
4904 will be justified by the reduction in chronic confusion..
4905 ** runtime-type.lisp -> early-target-type.lisp
4906 ** target-type.lisp -> late-target-type.lisp
4907 ** early-host-format.lisp -> early-format.lisp
4908 ** late-host-format.lisp -> late-format.lisp
4909 ** host-error.lisp -> misc-error.lisp
4910 ** early-error.lisp -> early-target-error.lisp
4911 ** late-error.lisp -> late-target-error.lisp
4912 ** host-defboot.lisp -> early-defboot.lisp
4913 ** code/misc.lisp -> code/target-misc.lisp
4914 ** code/host-misc.lisp -> code/misc.lisp
4915 ** code/numbers.lisp -> code/target-numbers.lisp
4916 ** code/early-numbers.lisp -> numbers.lisp
4917 ** early-host-type.lisp -> early-type.lisp
4918 ** late-host-type.lisp -> late-type.lisp
4919 ** host-typep.lisp -> typep.lisp
4920 ** load.lisp -> target-load.lisp
4921 ** host-load.lisp -> load.lisp
4922 ** host-disassem.lisp -> disassem.lisp
4923 ** host-insts.lisp -> insts.lisp
4924 ** byte-comp.lisp -> target-byte-comp.lisp
4925 ** host-byte-comp.lisp -> byte-comp.lisp
4926 ** host-signal.lisp -> signal.lisp
4927 ** host-defstruct.lisp -> defstruct.lisp
4928 ** late-target-type.lisp -> deftypes-for-target.lisp
4929 Furthermore, several other previously target-only files foo.lisp (e.g.
4930 hash-table.lisp and random.lisp) have been split into a target-and-host
4931 foo.lisp file and a target-only target-foo.lisp file, with their key type
4932 definitions in the target-and-host part, so that the cross-compiler will
4933 know more about target types.
4934 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4935 gone away. In their place are various *BACKEND-FOO* variables
4936 corresponding to the slots of the old structure.
4937 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4938 into the target SBCL has been fixed.
4939 * The chill.lisp system for loading cold code into a running SBCL
4941 * Support for the CMU CL "scavenger hook" extension has been removed.
4942 (It was undocumented and unused in the CMU CL sources that SBCL was
4943 derived from, and stale in sbcl-0.6.1.)
4944 * Various errors in the cross-compiler type system were detected
4945 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4946 (enabling various consistency checks). Many of them were fixed,
4947 but some hard problems remain, so the compiler is back to
4948 running without *TYPE-SYSTEM-INITIALIZED* for now.
4949 * As part of the cross-compiler type system cleanup, I implemented
4950 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4951 * I have started adding UNCROSS calls throughout the type system
4952 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4953 on cross-compiler input files will be able to go away, and various
4955 * CONSTANTP now returns true for quoted forms (as explicitly required
4958 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4960 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4961 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4962 (MAKE-LIST -1). In the longer term, it ought to become true
4963 that declarations are assertions even at SAFETY 1. For now, it's not
4964 quite true even at SAFETY 3, but it's at least more nearly true..
4965 (Note that this change seems to increases the size of the system by
4966 O(5%) and to decrease the speed of the compiler by 20% or more.)
4967 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4968 for the problem of printing dozens of lines of distracting information
4969 about low-level system machinery as part of the top stack frame
4970 on entry to the debugger when an undefined function was called.
4971 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4972 is not reset to COMMON-LISP-USER.
4973 * Compilation of stuff related to dyncount.lisp has been made conditional
4974 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4975 smaller. The various dyncount-related symbols have been moved into
4976 a new "SB-DYNCOUNT" package.
4977 * tty-inspect.lisp has been renamed to inspect.lisp.
4978 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4979 feature has gone away. (When we eventually port to other flavors of
4980 libc and/or Unix, we'll try to make the differences between flavors
4981 invisible at the user level.)
4982 * Various other *FEATURES* tags, and/or their associated conditionals,
4983 have been removed if obsolescent, or given better documentation, or
4984 sometimes given more-mnemonic names.
4986 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4988 * tidied up "make.sh" script
4989 * tidied up system directory structure
4990 * better "clean.sh" behavior
4991 * added doc/FOR-CMUCL-DEVELOPERS
4992 * many many small tweaks to output format, e.g. removing possibly-confusing
4993 trailing #\. character in DESCRIBE-INSTANCE
4994 * (EQUALP #\A 'A) no longer signals an error.
4995 * new hashing code, including EQUALP hashing
4996 * tidied up Lisp initialization and toplevel
4997 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4998 * command line argument processing
4999 * added POSIX-GETENV function to deal with Unix-ish environment variables
5000 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5001 terminating SBCL on EOF
5002 * non-verbose GC by default
5003 * There is no more "sbcl" shell script; the sbcl file is now the C
5004 runtime executable (just like CMU CL).
5005 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5007 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5008 symbol and package information as Lisp native symbol and package objects
5009 instead of strings naming symbols and strings naming packages. This way,
5010 whenever packages are renamed (as in warm init), debug information is
5011 transformed along with everything else.
5012 * tweaked the optimization policy declarations which control the building
5013 of SBCL itself. Now, among other things, the system no longer saves
5014 source location debugging information. (This helps two problems at once
5015 by reducing SBCL size and by keeping SBCL from trying to look for its
5016 sources -- which may not exist -- when reporting errors.)
5017 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5018 debugging and testing purposes
5019 * cleaned up printing, making the printer call PRINT-OBJECT for
5020 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5021 methods, giving nearly-ANSI behavior
5022 * converted almost all special variables to use *FOO* naming convention
5023 * deleted PARSE-TIME functionality, since it can be done portably
5024 * moved some files out of cold init into warm init
5025 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5027 * regularized formatting of source files
5028 * added an install.sh script
5029 * fixed ridiculous memory usage of cross-compiler by making
5030 compiler/alloc.lisp not try to do pooling unless it can hook
5031 itself into the GC of the cross-compilation host. Now the system
5032 builds nicely on my old laptop.
5033 * added :SB-ALLOC in target-features.lisp-expr
5034 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5035 was not implemented)
5036 * re-did condition handling and note reporting in the compiler. Notes
5037 are no longer handled by signalling conditions. Style warnings
5038 and warnings are handled more correctly and reported in such a way
5039 that it's easy to find one or the other in your output (so that you
5040 can e.g. figure out which of many problems caused COMPILE-FILE to
5042 * changed the severity of several compiler warnings from full WARNING
5043 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5044 compiler note reporting so that it doesn't use the condition system
5045 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5046 COMPILE-FILE command)
5047 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5048 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5049 no longer supported, since their implementation was deeply intertwingled
5050 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5051 * removed bogus "support" for compiler macros named (SETF FOO), and
5052 removed the compiler macro for SETF INFO (but only after making a fool
5053 of myself on the cmucl-imp mailing list by posting a bogus patch for
5054 DEFINE-COMPILER-MACRO..)
5055 * Compiled files containing forms which have side effects on the Lisp
5056 reader (such as DEFPACKAGE forms) are now handled more correctly.
5057 (Compiler queuing of top level lambdas has been suppressed by setting
5058 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5059 * deleted various currently-unused source files, e.g. gengc.lisp. They
5060 may be added back at some point e.g. when porting to other architectures,
5061 but until they are it's distracting to distribute them and to try to
5063 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5064 there were so many of them they're just distractions, and UNCROSS is
5065 known to be able to handle the current sources
5066 * moved PROFILE functionality into TRACE, so that it will be clear
5067 how the wrapping and unwrapping of functions when you profile them
5068 interacts with the wrapping and unwrapping of functions when you
5069 trace them. (Actually, the functionality isn't there yet, but at least
5070 the interface specification is there. Hopefully, the functionality will
5071 arrive with some future maintenance release.)
5072 * removed host-oops.lisp
5073 * changed signature of QUIT function to allow UNIX-CODE argument
5074 * fixed READ-SEQUENCE bug
5075 * tweaked verbose GC output so that it looks more like the progress
5076 output that ANSI specifies for functions like LOAD
5077 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5078 * added <http://sbcl.sourceforge.com> to the banner information printed by