1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 * minor incompatible change: under weak type checking policy integer
3 types are weakened less aggressively.
4 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
5 allowed to return, which causes SBCL to quit with exit status 0. Previously
6 if the function returned with a small integer return value, that value
7 was accidentally reused as the exit status.
8 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
10 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
11 allows the compiler to safely elide boundedness checks for special
13 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
14 the symbol, prohibits both lexical and dynamic binding. This is mainly an
15 efficiency measure for threaded platforms, but also valueable in
17 * optimization: accesses to potentially non-simple arrays where element type
18 is known are 50% faster.
19 * optimization: compiler now generates faster array typechecking code.
20 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
22 * optimization: multidimensional array accesses in the absence of type
23 information regarding array rank are approximately 10% faster due to
24 open coding of ARRAY-RANK.
25 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
26 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
28 * improvement: SBCL now emits a compiler note where stack allocation was
29 requested but could not be provided.
30 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
31 * improvement: pretty-printing loop has been implemented properly. (thanks
33 * documentation: CLOS slot typechecing policy has been documented.
34 * bug fix: better floating point exception handling on x86/OpenBSD.
35 (thanks to Josh Elsasser)
36 * bug fix: exit status from QUIT when called under --script was lost
37 (reported by Hubert Kauker)
38 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
39 same implementation of FILL to initialize the array, even if a more
40 efficient one was available (reported by Stas Boukarev, thanks to
42 * bug fix: potential miscompilation of array stack allocation on x86 and
43 x86-64. (reported by Time Tossavainen)
44 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
45 result in their subforms being treated as top level forms. (reported by
47 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
48 than a machine register could leave garbage in the high bits of the
49 result register (bug 316325).
50 * bug fix: disable address space randomization Linux/x86-64 as well,
51 not just x86-64. (reported by Ken Olum)
52 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
53 generate incorrect code.
54 * bug fix: #201; type inference for CONS and ARRAY types could derive
55 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
56 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
57 could not be assigned to or bound with PROGV. (reported by Lorenz
59 * bug fix: the value of CL:- in the inspector was the previous expression
60 evaluated rather than the expression being evaluated.
61 * bug fix: constants can no longer be locally declared special.
62 * bug fix: signals delivered to threads started from foreign land (read:
63 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
64 thread by blocking all signals and resignalling.
66 changes in sbcl-1.0.28 relative to 1.0.27:
67 * a number of bugs in cross-compilation have been fixed, with the ultimate
68 result that building under (at least) clisp should be much more reliable.
69 * minor incompatible changes: echo-streams now propagate unread-char to the
70 underlying input stream, and no longer permit unreading more than one
72 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
73 frames, allowing for instance more reliable backtraces.
74 * improvement: the debugger REPL can now reference lexical variables
75 by name directly for code compiled with (DEBUG 3).
76 * improvement: errors from malformed declarations now have better source
77 paths associated with them. (thanks to Tobias Rittweiler)
78 * optimization: faster local calls on x86/x86-64
79 * bug fix: some error messages for out-of-bound array indexes confused the
80 index and the bound. (thanks to Stas Boukarev)
81 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
83 * bug fix: running regressions tests in shells without OSTYPE set now works.
84 (reported by Harald Hanche-Olsen)
85 * bug fix: more robust static space exhaustion signalling from
86 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
87 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
88 docstring away instead of storing it under names such as (LAMBDA (X)).
89 (reported by Leslie Polzer)
90 * bug fix: timers could go off in the wrong order, be delayed indefinitely
91 (thanks to Ole Arndt for the patch)
92 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
93 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
94 potentially-invalid effective methods in its cache.
95 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
96 instances as well (thanks to Paul Khuong)
97 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
98 SB-POSIX:WAITPID and their C equivalents.
99 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
101 changes in sbcl-1.0.27 relative to 1.0.26:
102 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
103 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
104 * improvement: the system either recovers from stack exhaustion or dies
105 properly as opposed to leaving the user uncertain of whether the handler
106 trampled on some random memory next to the stack or having to rely on
107 --lose-on-corruption (which is still a good idea to use in production
108 because stack exhaustion can happen in signal handlers which will likely
110 * bug fix: fix gc related interrupt handling bug on ppc (regression from
111 1.0.25.37, reported by Harald Hanche-Olsen)
112 * bug fix: work around signal delivery bug in darwin (regression from
113 1.0.25.44, reported by Sidney Markowitz)
114 * bug fix: fix ERROR leaking memory (reported by David Thompson)
116 changes in sbcl-1.0.26 relative to 1.0.25:
117 * incompatible change: an interruption (be it a function passed to
118 INTERRUPT-THREAD or a timer function) runs in an environment where
119 interrupts can be enabled. The interruption can use
120 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
121 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
122 potentially running out of stack. Keep in mind that in the absence
123 of WITHOUT-INTERRUPTS some potentially blocking operation such as
124 acquiring a lock can enable interrupts.
125 * incompatible change: GC-OFF and GC-ON are removed, as they were
126 always unsafe. Use WITHOUT-GCING instead.
127 * new feature: runtime option --disable-ldb
128 * new feature: runtime option --lose-on-corruption to die at the
129 slightest hint of possibly non-recoverable errors: running out of
130 memory, stack, alien stack, binding stack, encountering a memory
131 fault, etc. In the absence of --lose-on-corruption a warning is
133 * enhancement: detect binding stack exhaustion
134 * enhancement: detect alien stack exhaustion on x86/x86-64
135 * improvement: generally more stable and reliable interrupt handling
136 * improvement: there is a per thread interruption queue,
137 interruptions are executed in order of arrival
138 * improvement: a repeating timer reschedules itself when the it has
139 finished, but expiration times are spaced equally. If an
140 expiration time is in the past it will trigger after a short grace
141 period that may give a chance to other things to run.
142 * optimization: slightly faster gc on multithreaded builds
143 * optimization: faster WITHOUT-GCING
144 * bug fix: when JOIN-THREAD signals an error, do it when not holding
145 important locks so that the debugger/handler doesn't produce
146 recursive errors or deadlock.
147 * bug fix: real-time signals are not used anymore, so no more
148 hanging when the system wide real-time signal queue gets full.
149 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
151 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
152 * bug fix: fix random memory faults related to interrupts on alpha
153 * bug fix: fix random memory faults related to interrupts on sparc
154 * bug fix: fix deadlocks related to starting threads
155 * bug fix: fix deadlines on locks on futex platforms
156 * bug fix: restore errno in signal handlers
157 * bug fix: fix deadlocks related to hash tables
158 * bug fix: fix deadlocks in pcl
160 changes in sbcl-1.0.25 relative to 1.0.24:
161 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
162 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
163 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
164 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
165 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
166 better name and does not return values so stale on multiprocessor systems.
167 Also, HOLDING-MUTEX-P was added for about the only sane usage of
169 * improvement: unithread builds keep track of MUTEX-VALUE.
170 * improvement: reading from a TWO-WAY-STREAM does not touch the output
171 stream anymore making it thread safe to have a concurrent reader and
172 a writer, for instance, in a pipe.
173 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
174 arguments, making compiler-macros for SETF-functions able to inspect
175 their constant arguments.
176 * improvement: COMPILE-FILE reports times with millisecond accuracy
177 (thanks to Luis Oliveira)
178 * optimization: CHAR-CODE type derivation has been improved, making
179 TYPEP elimination on subtypes of CHARACTER work better. (reported
180 by Tobias Rittweiler, patch by Paul Khuong)
181 * bug fix: setting alien structure fields of type struct by value now
182 computes the right offset for the memory copy.
183 * bug fix: compilation problem involving inlined calls to aliens with
184 result type VOID. (reported by Ken Olum)
185 * bug fix: #235a; sequential inline expasion in different policies no
186 longer reuses the functional from the previous expansion site.
187 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
188 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
189 * bug fix: named ENUMs in multiply-referenced alien record types no longer
190 cause an implied type redefinition. Regression from 1.0.21.29.
191 * bug fix: sign-extension of small signed return values now works with C
192 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
193 * improvements to the Windows port:
194 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
195 Westfold, thanks to Rudi Schlatte)
197 changes in sbcl-1.0.24 relative to 1.0.23:
198 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
199 vector of a multidimensional SIMPLE-ARRAY.
200 * new feature: the system now signals a continuable error if standard
201 readtable modification is attempted. (thanks to Tobias Rittweiler)
202 * new feature: DIRECTORY has been extended with a non-standard keyword
203 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
204 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
205 has been robustified and documented better. (thanks to Robert Goldman)
206 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
207 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
208 * tradeoff: constant FORMAT control strings are now compiled unless
209 SPACE > SPEED (previously only when SPEED > SPACE.)
210 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
212 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
214 * bug fix: lexical type declarations are now correctly reported by
215 SB-CLTL2. (reported by Larry D'Anna)
216 * bug fix: STRING-TO-OCTETS did not handle :START properly when
217 using UTF-8 as external format. (thanks to Luis Oliveira)
218 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
219 are signalled correctly. (thanks to Stas Boukarev)
220 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
221 designator. (thanks to Tobias Rittweiler)
222 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
223 designator, and returns T instead of the function. (thanks to
225 * bug fix: direct superclasses of STANDARD-CLASS and
226 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
227 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
228 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
229 when no class with the named slot yet exists no longer causes a
230 compile-time style-warning.
231 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
232 in safe code. (reported by Didier Verna)
233 * bug fix: #430; nested structure constructors can stack allocate.
234 * bug fix: on some 64-bit platforms dynamic space size was truncated
235 to #xffff0000 bytes. (reported by Benjamin Lambert)
236 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
237 REPL unusable. (reported by Daniel Herring)
238 * bug fix: return values of READ-SEQUENCE did not take :START into
239 account on file streams, regressions since 1.0.12.22. (reported by
240 Thomas Russ, patch by Paul Khuong)
241 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
242 method specializer used to confuse permuation vector optimization.
243 * bug fix: system inserted bogus implicit type declarations for local
244 special variables in DEFMETHOD bodies.
245 * bug fix: #354; duplicated frames in backtraces due to
246 non-tail-call-optimized XEPs to functions with return type NIL
248 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
249 initializes structure object slots according to DEFSTRUCT initforms,
250 and DEFSTRUCT forms :INCLUDEind structure classes defined using
251 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
252 (reported by Bruno Haible and Stephen Wilson)
253 * bug fix: #395; fill-pointer output streams used now support
254 element-type BASE-CHAR as well.
255 * bug fix: compiler error when attempting to derive return value of
256 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
258 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
260 * bug fix: Mac OS X binaries should now be portable between Leopard
263 changes in sbcl-1.0.23 relative to 1.0.22:
264 * enhancement: when disassembling method functions, disassembly
265 for the associated fast function is also produced.
266 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
268 * optimization: printing with *PRINT-PRETTY* true is now more
269 efficient as long as the object being printed doesn't require
270 special handling by the pretty printer.
271 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
272 now interact correctly with type declarations.
273 * partial bug fix: PCL detects infinite recursion during wrapper
274 validation. (thanks to Attila Lendvai)
275 * bug fix: #426; nested function calls are inlined properly.
276 Previously if FOO was an inline function, in calls of the form
277 (FOO (FOO ...)) the outer call was not inlined.
278 * bug fix: long long arguments passed in registers to alien
279 functions on PowerPC Linux and NetBSD are now handled correctly
280 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
282 changes in sbcl-1.0.22 relative to 1.0.21:
283 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
284 for the shared object in the current directory, but passes the native
285 namestring of the designated pathname to the operation system's shared
286 object loading function as-it.
287 * minor incompatible change: --disable-debugger toplevel option now takes
288 effect before processing of initialization files and --eval or --load
290 * new feature: new commandline argument: --script, which supports
291 shebang lines. See documentation for details. (based on work by
293 * new feature: SAVE-LISP-AND-DIE can save current values of
294 --dynamic-space-size and --control-stack-size in the executable core,
295 causing it to skip normal runtime option processing. See documentation
296 for details. (thanks to Zach Beane)
297 * enhancement: inoccous calls to EVAL or generic functions dispatching
298 on subclasses of eg. STREAM no longer cause compiler notes to appear.
299 * enhancement: the system no longer resignals errors from --load and
300 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
301 associated with the original error to be lost. (thanks to Ariel
303 * enhancement: :DONT-SAVE keyword argument has been added to
304 LOAD-SHARED-OBJECT for controlling interaction with
305 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
306 the effects of an earlier LOAD-SHARED-OBJECT call.
307 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
308 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
309 provided. (reported by Cedric St-Jean)
310 * bug fix: circularity handling in the reader did not treat raw
311 structure slots correctly. (reported by Cedric St-Jean)
312 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
313 file descriptors when there were none.
314 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
315 was broken. (reporteed by Willem Broekema)
316 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
317 pathnames without a directory.
318 * bug fix: COMPILE-FILE did not warn about undefined variable
319 references at toplevel, and LOAD of the resulting fasl did
321 * bug fix: functions with non-required arguments used to end up with
322 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
323 * bug fix: redefining a function with non-required arguments didn't
324 update the system's knowledge about its call signature properly.
325 * bug fix: fixed #431; incompatible alien record type redefinitions
326 are detected and handled. (reported by Neil Haven)
327 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
328 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
330 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
331 after alien stack frames.
332 * bug fix: strings passed to mk{s,d}temp lacked null termination
334 changes in sbcl-1.0.21 relative to 1.0.20:
335 * new feature: the compiler is able to track the effective type of a
336 generic function across method addition and removal.
337 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
338 appropriately typed structure slots without locking.
339 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
340 information like those gathered by TIME using a programming-friendly
342 * new feature: TIME reports time taken even if the form performs a
343 non-local transfer of control.
344 * enhancement: reduced conservativism on GENCGC platforms: on
345 average 45% less pages pinned (measured from SBCL self build).
346 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
347 mutate constant symbols or violate declaimed type of the symbol.
348 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
349 sleeping on the semaphore in heavily contested semaphores.
350 * bug fix: semaphores and condition variables were not interrupt
352 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
353 owned by other threads anymore.
354 * bug fix: FIND on lists called KEY outside the specified
355 subsequence. (reported by budden)
356 * bug fix: LOG doesn't use single-float intermediate results when
357 given mixed integer and double-float arguments, leading to better
358 precision. (reported by Bob Felts)
359 * bug fix: LOG with base zero returned values of inconsistent type.
361 changes in sbcl-1.0.20 relative to 1.0.19:
362 * minor incompatible change: OPTIMIZE qualities
363 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
364 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
365 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
366 * documentation: some slot access efficiency guidelines have been
367 added to the user manual.
368 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
369 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
370 as ASSOC and MEMEBER.
371 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
372 to more efficient EQ-comparison versions more often.
373 * optimization: enhanced derivation of DOLIST iteration variable type
375 * optimization: constant folding of simple (LIST ...) forms as DOLIST
377 * optimization: runtime lookup of function definitions can be
378 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
379 * optimization: compiler is able to derive the return type of
380 (AREF (THE STRING X) Y) as being CHARACTER.
381 * optimization: CLRHASH on empty hash-tables no longer does pointless
382 work. (thanks to Alec Berryman)
383 * optimization: REPLACE deftransforms don't punt when :START1 or
385 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
386 no longer emits a code deletion note. (reported by Andrew
388 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
389 functions with an odd number of &OPTIONAL arguments, a &REST
390 argument, and one or more &KEY arguments at the call site.
391 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
392 arguments appeared at call sites as well.
393 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
394 READ-LINE &co can no longer read from them afterwards. (reported
396 * bug fix: fixed #427: unused local aliens no longer cause compiler
397 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
399 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
400 alien-stack leakage. (reported by Andy Hefner)
401 * bug fix: PROGV signals an error when an attempt to violate declared
402 type of a variable or bind a constant is made.
403 * bug fix: SET signals an error when an attempt to violate declared
404 type of a variable is made.
405 * bug fix: restart computation during the execution of a restart
406 test function no longer causes infinite recursion. (reported by
408 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
409 signals an error. (thanks to Pierre Mai)
410 * bug fix: EXPORT left symbol unexported in conflict situations.
411 (thanks to Michael Weber)
412 * bug fix: correctly handle name conflicts involving CL:NIL.
413 (thanks to Michael Weber)
414 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
415 conflicts arising from USEing package with conflicting symbols
416 correctly. (thanks to Michael Weber)
418 changes in sbcl-1.0.19 relative to 1.0.18:
419 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
420 warnings that go otherwise unhandled will be muffled if they are
421 of the type that's the value of this variable.
422 * optimization: stack allocation is slightly more efficient on x86
424 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
425 where a raw slot always is initialized using the initform whose
426 type is not know sufficiently well a compile-time are now compiled
427 correctly. (reported by John Morrison)
428 * bug fix: compiler no longer makes erronous assumptions in the
429 presence of non-foldable SATISFIES types.
430 * bug fix: stack analysis missed cleanups of dynamic-extent
431 arguments in non-let-converted calls to local functions.
432 * improvements to the Windows port:
433 ** adjusted address spaces for building on both Win32 and
434 Win64. (thanks for John Connors)
435 * fixed some bugs revealed by Paul Dietz' test suite:
436 ** interval arithmetic during type derivation used inexact integer
437 to single-float coercions.
438 ** arithmetic operations involving large integers and single
439 floats give the same results in compiled and interpreted code.
440 ** deriving the result type of COERCE no longer signals an error
441 if the derived type of the second argument is a MEMBER type
442 containing invalid type specifiers.
443 ** ADJOIN with constant NIL as second argument works correctly.
444 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
446 changes in sbcl-1.0.18 relative to 1.0.17:
447 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
448 profiles only the current thread.
449 * minor incompatible change: changes to SYMBOL-VALUE of constants
450 defined with DEFCONSTANT now signal an error.
451 * enhancement: SB-SPROF now has support for wallclock profiling,
452 and is also able to profile specific threads. REPORT output
453 has also additional sorting options.
454 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
456 * optimization: structure allocation has been improved
457 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
458 ** out of line constructors are ~10% faster.
459 ** inline constructors are ~15% faster.
460 ** inline constructors are capable of dynamic extent allocation
461 (generally on x86 and x86-64, in some cases on other platforms
463 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
465 * optimization: file compiler is now able to coalesce non-circular
466 lists, non-base strings, and bit-vectors. Additionally, constants
467 are never referenced through SYMBOL-VALUE at runtime.
468 * optimization: code defining methods on PRINT-OBJECT (and other
469 generic functions in the COMMON-LISP package) now loads faster.
470 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
472 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
473 fasl is now deleted. (reported by Attila Lendvai)
474 * bug fix: READ-LINE always returned NIL for the last line in files.
475 (reported by Yoshinori Tahara)
476 * bug fix: more accurate disassembly annotations of foreign function
477 calls. (thanks to Andy Hefner)
478 * bug fix: trimming non-simple strings and non-string string
479 designators when the there is nothing to trim works properly.
480 (thanks to James Knight)
481 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
482 (thanks to Travis Cross)
483 * fixed some bugs revealed by Paul Dietz' test suite:
484 ** NIL is a valid function name (regression at 1.0.13.38)
485 ** FILL on lists was missing its return value (regression at 1.0.12.27)
486 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
487 fill pointers properly (regression at 1.0.12.23)
488 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
489 displacement indices properly (regression at 1.0.12.23)
491 changes in sbcl-1.0.17 relative to 1.0.16:
492 * temporary regression: user code can no longer allocate closure
493 variable storage on stack, due to bug 419 without explicitly
494 requesting it. Please consult sbcl-devel for advice if you need to
495 use this feature in the meanwhile.
496 * new feature: runtime argument --control-stack-size can be used to
497 adjust thread default control stack size.
498 * enhancement: improved TIME output
499 ** all times are reported using the measured accuracy (milliseconds
500 for real and GC times, microseconds for everything else.)
501 ** processor cycle counts on x86 and x86-64.
502 ** interpreted forms are counted for both evaluator modes.
503 ** number of lambdas converted by the compiler is reported.
504 ** CPU percentage report (computed from real and total run time.)
505 ** more comprehensive run time reporting, using a condenced format
506 ** interperted form, lambda, and page fault counts are omitted
508 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
510 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
511 * optimization: two argument forms of LAST are upto ~10% faster
512 in normal SPEED policies.
513 * optimization: NCONC no longer needs to heap cons its &REST list
514 in normal SPEED policies.
515 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
517 * bug fix: UNION and NUNION work with :TEST-NOT once more,
518 regression since 1.0.9.1. (thanks to Eric Marsden)
519 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
520 since 1.0.15.36. (thanks to Paul Khuong)
521 * bug fix: LAST when always returned the whole list when given a bignum
522 as the second argument.
523 * bug fix: dynamic extent allocation of nested lists and vectors
524 could leak to otherwise accessible parts.
525 * bug fix: invalid optimization of heap-allocated alien variable
527 * bug fix: fasl header checking is less vulnerable to different
528 platform word lengths.
529 * bug fix: more correct assembler syntax for GNU binutils
530 2.18.50.0.4 support. (thanks to Marijn Schouten)
531 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
533 * bug fix: the fopcompiler can handle LOCALLY forms (with no
534 declarations) successfully. (reported by Attila Lendvai)
536 changes in sbcl-1.0.16 relative to 1.0.15:
537 * minor incompatible change: revert the changes to sb-posix's error
538 signaling added in 1.0.14.
539 * minor incompatible change: change PROBE-FILE back to returning
540 NIL whenever we can't get a truename, as was the case before 1.0.14.
541 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
542 inherits from ERROR instead of just CONDITION.
543 * new feature: SB-INTROSPECT can provide source locations for instances
544 as well. (thanks to Tobias Rittweiler)
545 * optimization: binding special variables now generates smaller code
546 on threaded platforms.
547 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
548 and cases where no :TEST is given but the compiler can infer that
549 the element to search is of type (OR FIXNUM (NOT NUMBER)).
550 * optimization: better LOGNOT on fixnums.
551 * optimization: modular arithmetic for a particular requested width
552 is implemented using a tagged representation unless a better
553 representation is available.
554 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
555 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
556 for wellformedness and returns a specialized vector. (reported by
557 Francois-Rene Rideau)
558 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
559 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
560 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
561 unscheduling timer at the same time as another timer fires.
562 * bug fix: don't reschedule timers for dead threads.
563 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
564 * bug fix: copying output from RUN-PROGRAM to a stream signalled
565 bogus errors if select() was interrupted.
566 * enhancement: add support for fcntl's struct flock to SB-POSIX.
568 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
569 * enhancement: cleaner backtraces for interactive interrupts, as
570 well as other cases where the interesting frames used to be
571 obscured by interrupt handling frames.
572 * enhancement: untracing a whole package using (UNTRACE "FOO") is
573 now supported, and tracing a whole package using (TRACE "FOO") now
574 traces SETF-functions as well.
575 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
576 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
577 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
578 * unreadably printed representation of hash-tables now includes
580 * bug fix: partially fixed #188: type propagation from assignments
581 is now more efficient.
582 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
583 'DOUBLE-FLOAT) are not flushable.
584 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
585 full address of the object, and none of the tag bits.
586 * bug fix: readably printing hash-tables now respects other printer
587 control variables. (reported by Cedric St-Jean)
588 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
589 keyword with MAKE-HASH-TABLE.
590 * bug fix: export SB-POSIX:MKSTEMP.
591 * bug fix: SORT was not interrupt safe.
592 * bug fix: XREF accounts for the last node of each basic-block as
594 * bug fix: MAKE-INSTANCE optimizations interacted badly with
595 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
596 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
597 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
598 create obsolete instances in the case of redefinition or
599 obsoletion of a superclass. (thanks to Andy Hefner)
600 * bug fix: Support for the Alpha architecture has been revived; it had
601 suffered somewhat from lack of maintenance since sbcl-1.0.
602 * improvements to the Windows port:
603 ** The system detects the codepage to use at startup, instead of
604 using the value from the saved core. (thanks to Kei Suzuki)
606 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
607 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
608 (see documentation for details.)
609 * revived support for OpenBSD (contributed by Josh Elsasser)
610 * partially fixed bug #108: ROOM no longer suffers from occasional
611 (AVER (SAP= CURRENT END)) failures.
612 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
613 bodies no longer cause a WARNING to be signalled. (reported by
615 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
616 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
617 the bug in TRUNCATE.) (reported by Michael Weber)
618 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
619 no samples. (reported by Andy Hefner)
620 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
621 no longer appear as (NIL ...) frames in backtraces.
622 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
623 is now actually exported from SB-EXT as documented. (reported by
625 * bug fix: sb-aclrepl now correctly understands how to inspect
626 single-floats on 64-bit platforms where single-floats are not boxed.
627 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
628 yet been finalized. (reported by Levente Meszaros)
629 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
630 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
631 SBCL-specific optimize qualities.
633 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
634 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
635 an executable in the search path, and does so in the child
636 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
637 been removed; it can be found in the CVS history, for somebody who
638 needs that search behavior (see the manual).
639 * minor incompatible change: compiler policy re. weakening type
640 checks has changed: now type checks are weakened only if SAFETY < 2
642 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
643 unparsing of directory pathnames as files. Analogously,
644 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
645 filename to parse into a directory pathname.
646 * enhancement: implicit generic function creation now signals a
647 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
648 users can bind handlers for and muffle around calls to LOAD.
649 * enhancement: RUN-PROGRAM allows unicode arguments and environments
650 to be used (using the default stream external format), and allows
651 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
652 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
653 strings and vectors whose element-type or simplicity is not fully
654 known at compile-time.
655 * optimization: STRING-TRIM and related functions no longer allocate
656 a new string when no trimming needs to be performed. These functions
657 are also faster than before when the input string has been declared
659 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
660 * optimization: READ-LINE is significantly faster for files containing
662 * optimization: non-open coded uses of character comparison operators
663 (e.g. char=) no longer cons when called with more than one parameter
664 on platforms supporting dynamic-extent allocation.
665 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
666 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
667 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
669 * bug fix: some sequence functions elided bounds checking when
671 * bug fix: too liberal weakening of union-type checks when SPEED >
673 * bug fix: more bogus fixnum declarations in ROOM implementation
676 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
677 * new feature: MAKE-HASH-TABLE now experimentally accepts a
678 :SYNCHRONIZED argument, which makes the hash-table safe for
679 concurrent accesses (but not iteration.) See also:
680 SB-EXT:WITH-LOCKED-HASH-TABLE, and
681 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
682 * optimization: CONCATENATE on strings is an order of magnitude faster
683 in code compiled with (> SPEED SPACE).
684 * optimization: SUBSEQ is ~50% faster on lists.
685 * bug fix: bug 417 fixed -- source location reporting is now more robust.
686 * bug fix: SUBSEQ on a list will now correctly signal an error if if
687 END is smaller then START.
688 * bug fix: SB-PROFILE will no longer report extra consing for nested
689 calls to profiled functions.
690 * bug fix: ROOM implementation had bogus fixnum declarations which
691 could cause type-errors when calling ROOM on large images.
692 * bug fix: if file compilation is aborted, the partial fasl is now
693 deleted, and COMPILE-FILE returns NIL as the primary value.
694 * bug fix: number of thread safety issues relating to SBCL's internal
695 hash-table usage have been fixed.
696 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
697 be returned from its body when the values were being returned
698 using unknown-values return convection and the W-P-O was wrapped
699 inside an UNWIND-PROTECT.
700 * bug fix: sb-posix should now compile again under Windows, enabling
703 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
704 * incompatible change: hash-table accessor functions are no longer
705 automatically protected by locks. Concurrent accesses on the same hash-table
706 from multiple threads can give inconsistent results or even corrupt the
707 hash-table completely. Multi-threaded applications should do their own
708 locking at the correct granularity. In the current implementation it is
709 still safe to have multiple readers access the same table, but it's not
710 guaranteed that this property will be maintained in future releases.
711 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
712 and will signal an error at runtime.
713 * enhancement: SB-THREAD package now exports a semaphore interface.
714 * enhancement: CONS can now stack-allocate on x86 and
715 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
717 * enhancement: nested lists can now be stack allocated on
718 platforms providing stack allocation support.
719 * enhancement: dynamic-extent support has been extended to support
720 cases where there are multiple possible sources for the stack
722 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
723 if the mutex is uncontested on Linux.
724 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
725 as specified by the CLHS. (thanks to Tobias Rittweiler)
726 * bug fix: NaN comparison now works on x86-64.
727 * bug fix: CLOSE :ABORT T on a stream with pending output now
729 * bug fix: instances of non-standard metaclasses using standard
730 instance structure protocol sometimes missed the slot type checks
732 * bug fix: known functions can be inlined in high-debug code.
734 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
735 * minor incompatible change: the MSI installer on Windows no longer
736 associates .lisp and .fasl files with the installed SBCL.
737 * minor incompatible change: :UNIX is no longer present in *FEATURES*
738 on Windows. (thanks to Luis Oliviera)
739 * new feature: SB-CLTL2 contrib module now implements
740 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
741 * optimization: scavenging weak pointers is now more efficient,
742 requiring O(1) instead of O(N) per weak pointer to identify
743 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
744 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
745 method bodies using constant slot-names when the first argument is
746 a specializer parameter for the method.
747 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
748 names, when the class of the instance is a direct instance
749 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
750 as slow as the constant slot-name case.)
751 * optimization: member type construction is now O(N) instead
753 * optimization: UNION and NUNION are now O(N+M) for large
754 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
756 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
757 now more readable in environments like Slime which display it.
758 (thanks to Tobias C. Rittweiler)
759 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
760 was able to infer the correct argument type for the object on which
761 the CAS operation was being performed.
762 * bug fix: copy propagation interfered with parallel assignment
763 semantics in local calls. (reported by Paul Khuong)
764 * bug fix: the signed modular fixnum shift compiled to wrong code on
765 x86 and x86-64. (spotted by a slight modification to some of
768 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
769 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
770 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
771 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
773 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
774 and generic function now print the object identity for anonymous
775 instances. (thanks to Attila Lendvai)
776 * enhancement: as an extension to MOP, SBCL now supports SETF of
777 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
778 (thanks to Attila Lendvai)
779 * enhancement: sb-cover has an alternate annotation mode which puts
780 the form annotations at the car of the form, instead of annotating
781 it completely. The benefit of this mode is that it shows better
782 which forms were instrumented by the compiler.
783 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
784 by printer control variables. (reported by Dan Corkill)
785 * bug fix: system leaked memory when delayed output was performed by
786 the OS in smaller chunks then expected. (thanks to David Smith)
787 * bug fix: system leaked memory when file streams were not closed
789 * bug fix: large objects written to slow streams that were modified
790 after the write could end up with the modified state written to
791 the underlying file descriptor.
792 * bug fix: multiple threads operating in parallel on the same stream
793 could cause buffer-overflows.
794 * bug fix: source location information is stored correctly
795 (broken since 1.0.6). This bug would generally show up as the
796 Slime debugger highlighting the wrong form when the sldb-show-source
798 * bug fix: Branch forms are again annotated as branches in the sb-cover
800 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
801 on x86-64. (reported by Gregory Vanuxem)
802 * bug fix: EQUALP could return wrong results for structures with raw
803 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
804 word). (reported by Vjacheslav Fyodorov)
805 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
808 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
809 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
810 atomic compare-and-swap operations on threaded platforms.
811 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
812 allows assigning a global minimum value to optimization qualities
813 (overriding proclamations and declarations).
814 * enhancement: closed over variables can be stack-allocated on x86
816 * performance bug fix: GETHASH and (SETF GETHASH) are once again
818 * optimization: slot definition lookup is now O(1). This speeds up
819 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
820 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
821 * optimization: ASSOC and MEMBER can now be open-coded for all
822 combinations of keyword arguments when second argument is constant
823 and SPEED >= SPACE. In other cases a specialized version is
825 * bug fix: using obsoleted structure instances with TYPEP and
826 generic functions now signals a sensible error.
827 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
828 (reported by Kristoffer Kvello)
829 * bug fix: backtrace construction is now more careful when making
830 lisp-objects from pointers on the stack, to avoid creating bogus
831 objects that can be seen by the GC.
832 * bug fix: defaulting of values in contexts expecting more than 7
833 variables now works on x86-64. (reported by Christopher Laux)
834 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
836 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
837 as the property-list of a symbol.
838 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
839 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
840 situations requested, are once again file-compileable. (reported
843 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
844 * MOP improvement: support for user-defined subclasses of
845 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
846 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
847 the expansion of DEFMETHOD, is responsible for generating a form
848 which creates a list of specializers when evaluated. Additional
849 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
850 debugging and introspective support.
851 * minor incompatible change: the (unsupported) spinlock interface
852 has changed: free spinlock now has the value NIL, and a held spinlock
853 has the owning thread as its value.
854 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
855 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
857 * enhancement: name of a socket-stream is now "a socket" instead of
859 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
860 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
861 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
862 for generic functions. (Thanks to Tobias C. Rittweiler)
863 * optimization: bignum printing speed has been improved by 20-40%
864 (depending on the bignum size.)
865 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
867 * bug fix: the cache used by the CLOS to store precomputed effective
868 methods, slot offsets, and constant return values is now thread and
870 * bug fix: generic function dispatch function updating is now thread
871 and interrupt safe (in the sense that the known issues have been
873 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
874 * bug fix: interning EQL-specializers is now thread and interrupt safe.
875 * bug fix: asdf systems with dependencies to the SB-POSIX or
876 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
877 * bug fix: interrupt safety of applicable method computation has been
880 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
881 * new contrib: sb-cover, an experimental code coverage tool, is included
883 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
884 significantly faster.
885 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
886 produce more efficient code on x86-64 if the compiler can determine
887 that (+ INDEX <constant>) does not require a bounds check and FOO
888 has an element type at least 8 bits wide.
889 * enhancement: a new, experimental synchronous timeout facility is
890 provided. Refer to SB-SYS:WITH-DEADLINE for details.
891 * enhancement: when a symbol name conflict error arises, the
892 conflicting symbols are always printed with a package prefix.
893 (thanks to Kevin Reid)
894 * enhancement: stepping is now once again supported on the SPARC and
895 MIPS platforms. (It is also now more likely to work on CheneyGC
897 * enhancement: sb-sprof can now also track and report accurate call
899 * bug fixes: the treatment of non-standard subclasses of
900 SB-MOP:SPECIALIZER is more correct.
901 * incompatible change: PURIFY no longer copies the data from the
902 dynamic space into the static and read-only spaces on platforms
903 that use the generational garbage collector
904 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
906 * bug fix: GC race condition occasionally resulting in crashes with
907 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
909 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
911 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
912 a STYLE-WARNING to be signalled (regression from 1.0.4.)
913 * bug fix: an asynchronous interrupt could previously leave the
914 system running with GC inhibited.
915 * bug fix: a DECLARE form evaluated at top-level now causes an error
916 rather than silently (or verbosely) returning NIL.
917 * bug fix: trying to dissassemble functions compiled at high DEBUG could
918 result in a error being signalled due to source form lookup errors.
919 (reported by Peter Graves)
921 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
922 * incompatible change: removed writer methods for host-ent-name,
923 host-ent-addresses -- changing the values did not update the DNS
925 * minor incompatible change: changed experimental JOIN-THREAD interface
926 * documentation: the manual now lists reader and writer methods
927 in class slot documentation sections. (thanks to Richard M Kreuter)
928 * documentation: unwinding from asyncronous events has been
929 documented as unsafe.
930 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
931 in multithreaded application code.
932 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
933 platforms. (thanks to James Anderson for the optimization hint)
934 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
936 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
937 variants no longer cons.
938 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
939 their NOT- variants no longer cons.
940 * optimization: EQUAL hash tables no longer use SXHASH for objects
941 of all data types, but instead use an EQL hash for types for which
942 EQUAL is the same as EQL.
943 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
944 are significantly faster.
945 * optimization: new STRING-OUTPUT-STREAM implementation is much
946 faster for large outputs and conses 30% less on average.
947 * enhancement: XREF information is now collected for references made
948 to global variables using SYMBOL-VALUE and a constant argument.
949 * enhancement: SIGINT now causes a specific condition
950 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
951 * bug fix: FILE-POSITION used to signal an error in some cases where
952 ANSI requires it to return NIL.
953 * bug fix: ADJUST-ARRAY is now interrupt-safe.
954 * bug fix: adding and removing fd-handlers is now interrupt-safe.
955 * bug fix: inlined calls to C now ensure 16byte stack alignment on
957 * bug fix: bad type declaration in the CLOS implementation has
958 been fixed. (reported by James Anderson)
959 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
960 (thanks to Lutz Euler)
961 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
962 required by the CLHS. (reported by Samium Gromoff)
963 * bug fix: dead unbound variable references now signal an error.
964 (reported by Marco Monteiro)
965 * bug fix: / with an unused value was being deleted in safe code.
966 (thanks to Marco Monteiro and Kevin Reid)
967 * bug fix: number of characters that can be written onto a single
968 line in a file is unlimited.
969 * bug fix: some GC deadlocks caused by asynchronous interrupts have
970 been fixed by inhibiting interrupts for when GC is disabled.
971 * bug fix: some interrupt safety issues with GETHASH, (SETF
972 GETHASH), CLRHASH and REMHASH have been fixed.
973 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
974 specifier no longer causes infinite recursion.
975 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
976 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
977 * bug fix: an &environment argument with the correct variable information
978 is passed to macros that are expanded during byte compilation.
979 (reported by Samium Gromoff)
980 * bug fix: a logic error was causing the hash function for bignums to
981 have excessive amounts of collisions. (reported by Faré Rideau)
982 * bug fix: modifying the contents of an array could change the return
983 value of SXHASH on that array, which is only allowed for strings
984 and bit vectors. (bug introduced in 0.9.16)
985 * improvement: the x86-64/darwin port now passes all tests (except
986 for the debugger tests) but should still be considered
987 experimental until this is fixed.
988 * improvement: a style-warning is signaled for CASE (etc) clauses with
989 duplicate keys. (thanks to Kevin Reid)
990 * improvement: macos/x86 and macos/x86-64 now use mach exception
991 handlers for dealing with illegal instructions (for trapping and
992 error handling) and memory protection violations (for GC).
994 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
995 * new platform: experimental support for x86-64/darwin (MacOS).
996 * incompatible change: the thread-safe (on most platforms) getaddrinfo
997 and getnameinfo sockets functions are used instead of gethostbyaddr
998 and gethostbyname, on platforms where the newer functions are available.
999 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1001 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1002 don't print the startup banner, but behave as if --noinform was passed
1003 as a command line argument. (thanks to Kevin Reid)
1004 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1005 * optimization: code using alien values with undeclared types is much faster.
1006 * optimization: the compiler is now able to open code SEARCH in more cases.
1007 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1008 * bug fix: using standardized COMMON-LISP special variables as loop
1009 variables no longer signals bogus package lock violations. (reported
1011 * bug fix: declaring local loop variables to be of a range-limited type
1012 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1013 (reported by Andras Simon)
1014 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1015 bugs remain on x86-64.)
1016 * bug fix: the #= and ## reader macros now interact reasonably with
1017 funcallable instances.
1018 * bug fix: type-checks for function arguments were compiled using the
1019 compiler policy settings of the wrong lexical environment (in 1.0.2
1021 * bug fix: SHADOW accepts characters as string designators, as required
1022 by the spec (thanks to Eric Marsden)
1023 * bug fix: fixed GC safety issues when foreign functions are called with
1024 non-base strings as arguments
1025 * bug fix: more consistent error output for fatal-compiler-warnings, like
1027 * bug fix: functions with proper names were showing up as NIL in
1028 backtraces (reported by Edi Weitz, regression in 1.0.2)
1030 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1031 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1032 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1033 produce more efficient code on the x86 if the compiler can determine
1034 that (+ INDEX <constant>) does not require a bounds check and FOO
1035 has an element type at least 8 bits wide.
1036 * bug fix: references to undefined variables are handled the same way
1037 in toplevel forms as in the normal compiler
1038 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1040 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1041 (thanks to Jon Buller)
1042 * improvement: faster compilation times for complex functions
1043 * improvement: added readlink support to SB-POSIX (thanks to Richard
1046 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1047 * improvement: experimental support for mach exception handling on
1048 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1050 * improvement: support for GBK external format.
1051 (thanks to Chun Tian (binghe))
1052 * improvement: the debugger now displays variables that have been closed
1053 over, in code compiled with (DEBUG 2) or higher
1054 * improvement: support for executable cores on NetBSD (thanks to
1056 * new feature: added a RESTART-FRAME debugger command
1057 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1058 be used to provide an implementation for FILE-POSITION on Gray streams
1059 (thanks to Eric Marsden)
1060 * new feature: add syslog, openlog and closelog support to SB-POSIX
1061 (thanks to Richard Kreuter)
1062 * optimization: the function call overhead in code compiled with
1063 a high DEBUG optimization setting is significantly
1064 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1065 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1066 (thanks to Tony Martinez)
1067 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1068 evaluated once (reported by Kevin Reid)
1069 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1070 works again (thanks to Kilian Sprotte)
1071 * bug fix: an error is signaled for tagbodies with duplicate tags
1072 (thanks to Stephen Wilson)
1073 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1074 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1075 stack frames from alien callbacks.
1076 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1077 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1078 65k pages (thanks to David Woodhouse)
1079 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1081 changes in sbcl-1.0.1 relative to sbcl-1.0:
1082 * new platform: FreeBSD/x86-64, including support for threading.
1083 * new feature: the compiler stores cross-referencing information
1084 about function calls (who-calls), macroexpansion (who-macroexpands)
1085 and special variables (who-binds, who-sets, who-references) for code
1086 compiled with (< SPACE 3). This information is available through the
1087 sb-introspect contrib.
1088 * new feature: users may subclass SEQUENCE, and have instances of
1089 these classes interoperate with standard Common Lisp functions if
1090 a number of methods are defined. (This feature is experimental
1091 and the interface subject to change based on feedback from SBCL
1092 users and the general community)
1093 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1094 x86/x86-64, rather than the previous fixed depth of 8
1095 * improvement: another pthread back-end of mutex "pthread-futex".
1096 * bug fix: non-ascii command-line arguments are processed correctly
1097 (thanks to Yaroslav Kavenchuk)
1098 * bug fix: non-required arguments were not passed correctly when a method
1099 defined using DEFMETHOD was called from a mop-generated method using
1100 CALL-NEXT-METHOD (reported by Pascal Costanza)
1101 * bug fix: recursion is now permitted in accessors through
1102 SLOT-UNBOUND. (reported by Pascal Costanza)
1103 * bug fix: an error was signaled at startup if the HOME environment
1104 variable was defined, but had an empty value (reported by Peter Van Eynde)
1105 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1106 signal a PROGRAM-ERROR, not a BUG.
1107 * bug fix: SB-POSIX:READDIR works when built with large file support.
1108 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1110 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1111 for better automatic indentation support. (thanks to Matt Pillsbury)
1112 * optimization: loading generic functions no longer takes O(n^2) time,
1113 proportional to the amount of methods in the generic function
1114 (reported by Todd Sabin and Jeremy Brown)
1115 * optimization: the FIND and POSITION family of sequence functions
1116 are significantly faster on arrays whose element types have been
1118 * improvements to the Windows port:
1119 ** Intermittent heap corruption problems have been fixed. (thanks
1120 to Alastair Bridgewater)
1121 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1123 ** Lisp is able to unwind foreign exception frames from alien
1124 callbacks. (thanks to Alastair Bridgewater)
1126 changes in sbcl-1.0 relative to sbcl-0.9.18:
1127 * improvement: experimental support for threading on FreeBSD/x86.
1128 (thanks to NIIMI Satoshi)
1129 * improvement: runtime option --dynamic-space-size can be used
1130 to set the size of the dynamic space reserved on startup.
1131 * improvement: floating point modes in effect are now saved in
1132 core, and restored on startup.
1133 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1134 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1135 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1136 threads are not running after *SAVE-HOOKS* have run.
1137 * improvement: writes to CLOS instance slots are type-checked in code
1138 compiled with (SAFETY 3)
1139 * improvement: floating-point exception handling on FreeBSD (thanks to
1141 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1142 (thanks to Zach Beane)
1143 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1145 * improvement: added support for the Shift-JIS external format.
1146 (contributed by NIIMI Satoshi)
1147 * improvement: callbacks are supported on Linux/PPC. (thanks to
1149 * bug fix: compiler bug triggered by a (non-standard) VALUES
1150 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1151 * bug fix: file compiler no longer confuses validated and already
1152 dumped structurres. (reported by Kaersten Poeck)
1153 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1154 fill-pointer signals a type-error as required. (thanks to
1156 * bug fix: disassemly of funcallable instances works.
1157 * bug fix: single stepping on PPC.
1158 * bug fix: fix thread-safety problems in the type system (generally
1159 manifesting as nonsensical errors like "STRING is a bad type specifier
1160 for sequences" or "The value 1 is not of type FIXNUM")
1161 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1162 (reported by Josip Gracin)
1163 * bug fix: an error is signaled for attempts to displace arrays with
1164 incompatible element types (thanks to Mario Mommer)
1165 * bug fix: more correct handling of wide characters in debug info
1166 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1167 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1168 and don't cause extra consing
1169 * optimization: MAP and MAP-INTO are significantly faster on vectors
1170 whose elements types have been declared.
1171 * Improvements to SB-SPROF:
1172 ** Support for allocation profiling
1173 ** Reduced profiling overhead, especially for long profiling runs
1174 * Improvements to the Windows port:
1175 ** floating point exceptions are now reported correctly.
1176 ** stack exhaustion detection works partially.
1177 ** more accurate GET-INTERNAL-REAL-TIME.
1178 ** better RUN-PROGRAM behaviour in case of errors in the child
1180 ** PROBE-FILE now simplifies pathnames correctly.
1181 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1182 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1183 1st 1970 (although time timezone data will be unreliable).
1184 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1186 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1187 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1188 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1190 * bug fix: two potential GC deadlocks affecting threaded builds.
1191 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1192 returns T (reported by Anton Kazennikov)
1193 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1194 with non-variable places
1195 * bug fix: remove a race condition in the setting of
1196 funcallable-instance functions, this should make threaded CLOS
1197 code more stable against memory faults.
1198 * bug fix: corruption of specials when unbinding is interrupted by an
1199 asynchronous unwind (reported by Hannu Koivisto)
1200 * improvement: the debugger will now also display local variables that
1201 are only used once, for code compiled with a DEBUG optimization quality
1204 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1205 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1206 * incompatible change: External-format support for FFI calls. The
1207 SB-ALIEN:C-STRING no longer implies an ASCII
1208 external-format. Instead the string is subject to external-format
1209 conversion. Additionally return values of type SB-ALIEN:C-STRING
1210 are by default of type (SIMPLE-ARRAY CHARACTER), not
1211 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1212 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1213 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1214 * incompatible change: SB-EXT package no longer contains the
1215 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1216 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1218 * incompatible change: the single-stepper is no longer available
1219 on Alpha, Mips and Sparc platforms.
1220 * minor incompatible change: the direct superclasses of
1221 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1222 not (STANDARD-OBJECT FUNCTION). This makes the
1223 class-precedence-lists of GENERIC-FUNCTION and
1224 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1226 * minor incompatible change: the default stream external format on
1227 non-unicode SBCL is no longer detected from the locale, but is always
1229 * new feature: Add a version of evaluator that uses an interpreter instead
1230 of the compiler. EVAL still uses the compiler by default, to switch it
1231 to use the interpreter, set the value of the variable
1232 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1233 * minor incompatible change: the single-stepper REPL has been merged
1234 with the normal debugger (see the "Stepping" heading of the debugger help
1235 for more details). The debugger command STEP will no longer switch
1236 to the single-stepper REPL.
1237 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1238 for a type now works.
1239 * bug fix: loading of default sysinit file works. (thanks to Leonid
1241 * bug fix: better detection of circularities in the file-compiler.
1242 (reported by Marco Monteiro)
1243 * bug fix: the CL pathname functions now work with files that have
1244 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1245 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1246 systems with Unix98 pty semantics.
1247 * bug fix: ASDF-INSTALL will now work with bsd tar.
1248 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1250 * bug fix: timers expiring in dead threads no longer cause a
1251 type-error (reported by Paul "Nonny Mouse").
1252 * bug fix: thanks to more lightweight single-stepper instrumentation,
1253 code compiled with (DEBUG 3) will compile and execute significantly faster,
1254 and will have more accurate type-inferencing than before
1255 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1256 whose bindings are modified
1257 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1258 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1259 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1260 CL:SOFTWARE-VERSION with proper version
1262 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1263 * feature: implemented the READER-METHOD-CLASS and
1264 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1265 as specified by AMOP.
1266 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1268 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1269 (thanks to Lutz Euler)
1270 * optimization: hashing of general arrays and vectors has been
1271 improved. (reported by Any Fingerhut)
1272 * enhancement: SB-INTROSPECT is now able to find definitions of
1273 profiled functions. (thanks to Troels Henriksen)
1274 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1275 as well, allowing compiler-macros for SETF-functions to expand.
1276 * enhancement: step-instrumentation no longer wraps known
1277 single-value functions with multiple-value context, allowing
1278 better type inference.
1279 * fixed bug #337: use of MAKE-METHOD in method combination now works
1280 even in the presence of user-defined method classes. (reported by
1281 Bruno Haible and Pascal Costanza)
1282 * fixed bug #339(c): if there are applicable methods not part of any
1283 long-form method-combination group, call INVALID-METHOD-ERROR.
1284 (reported by Bruno Haible)
1285 * fixed bug #361: the :FUNCTION initarg in the protocol for
1286 initialization of methods can now be used to override
1287 internally-produced optimized functions. (reported by Bruno
1289 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1290 system-provided lambda expression no longer cause warnings about
1291 unbound #:|pv-table| symbols.
1292 * bug fix: improved the handling of type declarations and the
1293 detection of violations for keyword arguments with non-constant
1295 * bug fix: potentially erronous calls to PATHNAME and
1296 MERGE-PATHNAMES were being flushed in some cases.
1297 (reported by Richard Kreuter)
1298 * bug fix: compiled calls to TYPEP were mishandling obsolete
1299 instances. (reported by James Bielman and Attila Lendvai)
1300 * bug fix: format strings with ~> without matching ~< no longer
1301 trigger an AVER, but signal an understandable error instead.
1302 (reported by Antonio Martinez)
1303 * bug fix: specifying an output-file without a pathname-type for
1304 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1305 of input-file instead of "fasl". (reported by Robert Dodier)
1306 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1307 (reported by James Y Knight).
1308 * bug fix: compiler-macros-function did not consider the environment
1309 argument for shadowing by local functions.
1310 * bug fix: compiler-macros expansion was inhibited by local INLINE
1312 * bug fix: inline expansions of known functions were subject to
1313 step-instrumentation in high debug policies, leading to problems
1314 with type-inference.
1315 * bug fix: compiler failed to differentiate between different CONS
1316 types in some cases.
1317 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1318 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1319 * bug fix: #368: incorrect use of expressed vs. upgraded array
1321 * bug fix: #306a: more precise unions of array types.
1322 * thread-safety improvements:
1323 ** CONDITION-WAIT could return early on Linux, if the thread was
1324 interrupted and subsequently continued with SIGCONT.
1325 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1327 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1328 * added support for the ucs-2 external format. (contributed by Ivan
1330 * minor incompatible change: pretty printing of objects of type
1331 (cons symbol) is, in the default pprint-dispatch-table, now
1332 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1334 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1335 called later in a class's lifetime, possibly as late as when the
1336 first instance of the class is created. Previously,
1337 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1338 class became finalizeable.
1339 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1340 for multibyte external-format streams. (thanks to "vbzoli")
1341 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1342 with :ALLOCATION :CLASS inherited from superclasses of the
1344 * fixed bug: anonymous classes can now be created using the :NAME
1345 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1346 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1347 * fixed bug: core-files saved with :EXECUTABLE T can again be
1348 executed when SBCL_HOME isn't set. (reported by James Knight)
1349 * fixed bug: toplevel LOCALLY forms with declarations could
1350 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1351 * fixed bug: printing from several different threads using different
1352 values of *print-case* could cause invalid output, due to
1353 some internal special variables of the printer not being bound
1354 thread-locally (reported by Max Mikhanosha)
1355 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1356 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1357 (reported by Pascal Costanza)
1358 * fixed bug: FINALIZE-INHERITANCE is called from
1359 REINITIALIZE-INSTANCE on classes when the class has previously
1360 been finalized, as required by AMOP.
1361 * minor code generation optimizations:
1362 ** better register allocation in CLOS dispatching functions
1363 ** overflow detection when coercing signed bytes to fixnums on x86-64
1364 ** is now implemented with one IMUL instruction instead of three shifts
1365 ** more efficient bit-vector access on x86 and x86-64
1366 ** more efficient access to raw structure slots on x86 and x86-64
1367 * fixed some bugs revealed by Paul Dietz' test suite:
1368 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1369 return its argument.
1371 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1372 * feature: thread support on Solaris/x86, and experimental thread support
1374 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1376 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1377 default method for SLOT-UNBOUND.
1378 * minor incompatible change: prevent the user from specializing the
1379 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1380 somewhat counter to the intent of the protocol, I (CSR) think, and
1381 additionally it just doesn't work in SBCL as currently
1382 implemented, thanks to optimizations (that are always valid for
1383 the other three SLOT-VALUEish functions, but not for the setter).
1384 * minor incompatible change: the :SB-LDB feature is now enabled by
1385 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1386 the low-level debugger.
1387 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1388 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1389 down to an SB-SYS:FD-STREAM, allowing direct communication in
1390 more cases. Temporary files and pipes are still used as a fallback
1392 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1393 on the non-reentrant C functions localtime(3) and gmtime(3).
1394 * bug fix: global optimization policy was not visible in LOCALLY and
1396 * bug fix: class objects can be used as specializers in methods.
1397 (reported by Pascal Costanza)
1398 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1399 with a type error. (reported by blitz_ on #lisp)
1400 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1401 failed with a type error. (reported by Pascal Bourguignon)
1402 * bug fix: merging pathnames against defaults with :DIRECTORY
1403 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1404 (reported by James Y Knight)
1405 * bug fix: saving large (>2GB) cores on x86-64 now works
1406 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1407 constant index and a (simple-array (signed-byte 32)) array
1408 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1409 error (patch by Robert J. Macomber)
1410 * feature: TIME now displays the amount of run-time spent in GC
1411 * bug fix: The debugger now does a better job of respecting
1412 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1413 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1414 workaround for bug 403.)
1415 * bug fix: floating point exception handling now works on FreeBSD
1416 (thanks to NIIMI Satoshi)
1417 * fixed some bugs revealed by Paul Dietz' test suite:
1418 ** MISC.641: LET-conversion were not supposed to work in late
1420 * improvements to the Win32/x86 port:
1421 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1422 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1424 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1425 * new feature: source path information is generated for macro-expansion
1426 errors for use in IDE's like Slime (thanks to Helmut Eller)
1427 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1428 * bug fix: compiler does not loop forever on an invalid type in
1430 * improvement: compilation of most CLOS applications is significantly
1432 * optimization: added a limited bytecode compiler for simple toplevel
1433 forms, speeding up compilation and FASL loading
1434 * bug fix: the statistical profiler now properly distinguishes anonymous
1437 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1438 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1439 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1440 into subclasses of the finalized class. Now user calls to
1441 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1442 system return before any subclasses are finalized.
1443 * minor incompatible change: The reader no longer ignores errors
1444 regarding non-existent packages in #+ and #- feature tests.
1445 * new feature: command line options --no-sysinit, --no-userinit to
1446 inhibit loading the corresponding init files
1447 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1448 for sending data through UDP sockets (thanks to François-René Rideau)
1449 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1450 error is signalled instead (thanks to François-René Rideau)
1451 * minor incompatible change: Error signalling behaviour of lexical
1452 operations violating package locks has changed slightly. Refer to
1453 documentation on package locks for details.
1454 * enhancement: EVAL can process IF-expressions without resorting to the
1456 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1457 constant-folded properly due to missing out-of-line functions.
1458 (reported by Mika Pihlajamäki)
1459 * bug fix: LISTEN sometimes returned T even in cases where no data was
1460 immediately available from the stream
1461 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1462 were reversed. (reported by Levente Mészáros)
1463 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1464 when given a vector displaced to an adjustable array. (reported
1466 * bug fix: derivation of float boundaries from numbers outside the
1467 appropriate float range (reported by John Wiseman)
1468 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1470 * bug fix: precomputing cache entries for generic functions with
1471 some subclasses of specializers as yet invalid does not attempt to
1472 fill a cache line with a negative offset. (reported by Levente
1474 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1475 allow condition class objects as arguments to DOCUMENTATION and
1476 (SETF DOCUMENTATION); only find and set documentation for
1477 structure names for the STRUCTURE doc-type. (suggested by Gary
1479 * improvements to the Win32/x86 port:
1480 ** (user-homedir-pathname) and default initialization file
1481 locations now know about the user's "Documents and Settings"
1482 directory (thanks to Yaroslav Kavenchuk)
1483 ** run-program is implemented (thanks to Mike Thomas)
1484 ** sockets support (thanks to Timothy Ritchey)
1485 ** better backtrace support (thanks to Alastair Bridgewater)
1486 ** sb-grovel supported
1487 ** asdf-install and sb-posix work somewhat
1488 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1489 * improvements to the Solaris/x86 port:
1490 ** works on Solaris 11/Solaris Express
1491 ** floating-point exception handling support
1492 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1493 * fixed some bugs revealed by Paul Dietz' test suite:
1494 ** REMOVE-METHOD returns its generic function argument even when
1495 the method is not one of the generic functions' methods.
1496 ** objects declared as MEMBER types can be admissible arguments to
1497 structure accessors.
1498 ** printing characters should simply be printed by the FORMAT ~:C
1500 ** compiler failure when compiling functions with hairy constant
1501 defaults for optional parameters.
1502 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1503 function, which is already optimized.
1505 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1506 * new platform: experimental support for SBCL x86/Darwin, including
1507 MacOS X 10.4.5 on Intel.
1508 * new feature: Unicode character names are now known to the system
1509 (through CHAR-NAME and NAME-CHAR).
1510 * new feature: the filesystem location of SBCL's core file is
1511 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1512 * minor incompatible change: the contrib modules SB-POSIX and
1513 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1514 this change is to make it easier to distribute
1515 location-independent binaries.
1516 * bug fix: as implied by AMOP, standardized classes no longer have
1517 slots named by external symbols of public packages. (reported by
1519 * optimization: calling functions via constant symbols -- as in
1520 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1521 via the function object as in (FUNCALL #'FOO).
1522 * optimization: on x86 and x86-64, the calling convention for the
1523 case of dealing with an unknown number of values has been altered
1524 to be friendlier to the prediction heuristics implemented,
1525 particularly with reference to CALL and RET pairing. (thanks to
1526 Alastair Bridgewater)
1527 * optimization: on x86, the code for access to thread-local symbol
1528 values and binding/unbinding of thread-local symbols is smaller.
1529 (thanks to Alastair Bridgewater)
1530 * enhancement: CONSTANTP is now able to determine constantness of
1531 more complex forms, including calls to constant-foldable standardized
1532 functions and some special forms beyond QUOTE.
1533 * fixed bug: occasional GC crashes on Solaris/x86
1534 * optimization: x86-64 supports stack allocation of results of simple
1535 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1536 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1537 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1538 (thanks to James Knight)
1539 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1540 by the standard (thanks to Stephen Compall)
1542 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1543 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1544 be used for bundling the runtime and the core file into one
1545 executable binary. This feature is not currently supported on all SBCL
1546 platforms. (thanks to James Bielman and NIIMI Satoshi)
1547 * new feature: a generational or ephemeral garbage collector is now
1548 the default on the PowerPC platform (both Linux and Darwin). The
1549 old Cheney (stop and copy) collector is a build-time option.
1550 (thanks to Cyrus Harmon, after Raymond Toy)
1551 * minor incompatible change: the method by which SBCL finds its
1552 contributed modules has changed; it no longer relies on symbolic
1553 links from an $SBCL_HOME/systems directory, but searches directly
1554 in the subdirectories of $SBCL_HOME.
1555 * enhancement: the dynamic heap size on the Linux/PPC platform is
1556 markedly larger, even using the older Cheney garbage collector.
1557 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1558 certain complicated string types. (reported by Gary King)
1559 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1560 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1561 * fixed bug: DOCUMENTATION on structures no longer signals an
1562 error if no structure type of the right name exists. (reported by
1564 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1565 applicable non-standard primary or :AROUND method on
1566 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1567 no longer cause unbound variable errors. (reported by Kevin Reid)
1568 * fixed bug: metacircle resolution in cases where methods have slots
1569 added before the slots from STANDARD-METHOD. (reported by Jean
1571 * fixed bug: the Power PC assembly code for calling into lisp
1572 sometimes computed its return address wrongly (depending on the
1573 15th bit of the address, fixed at link time). This used to
1574 manifest itself in a segmentation violation while building PCL.
1575 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1576 many others over the years)
1577 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1578 the stack pointer (treated as a signed integer) is negative.
1579 (thanks to Peter van Eynde)
1581 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1582 * new platform: experimental support for the Windows operating
1583 system has been added. (thanks to Alastair Bridgewater)
1584 * fixed several bugs in and robustified the PPC FFI (including
1585 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1586 * bug fix: allow non-simple string symbol names (reported by Paul
1588 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1590 * bug fix: saving a core corrupted callbacks on x86/x86-64
1591 * bug fix: closed a loophole in metacircularity detection and
1592 grounding in the PCL implementation of CLOS.
1593 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1594 (reported by tomppa on #lisp)
1595 * bug fix: clear the direction flag on Lisp -> C transitions, as
1596 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1597 (reported by Andrej Grozin and Hendrik Maryns)
1598 * optimization: major improvements to GC efficiency on GENCGC platforms
1599 * optimization: faster implementation of EQUAL
1600 * optimization: emit more efficient opcodes for some common
1601 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1602 * optimization: several other minor code-generation improvements on x86-64
1603 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1605 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1606 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1607 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1608 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1609 by ANSI as a generic function, and for consistency (SETF
1610 GENERIC-FUNCTION-NAME) is treated likewise.
1611 * fixed bug #233.b: make constraint propagation notice when a variable
1612 value is changed after it is referenced but before it is used
1613 * fixed bug #296: no more arbitrary behaviour from filenames with
1614 odd characters as --load arguments. (reported by Adam Warner)
1615 * fixed bug #390: :CHARACTER-SET pathname components now work as
1616 expected. (reported by Tim Daly Jr)
1617 * fixed bug #391: complicated :TYPE intersections in slot
1618 definitions no longer cause an error in PCL internals.
1619 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1620 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1621 returning the number of octets which would be written to the
1622 file-stream. (thanks to Robert J. Macomber)
1623 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1624 arguments to the internal stream functions. (thanks to David
1626 * bug fix: stack exhaustion is now handled on the x86/SunOS
1627 platform. (thanks to Daisuke Homma)
1628 * bug fix: more accurate ROOM results on GENCGC platforms
1629 * optimization: improved type inference for arithmetic-for
1630 index variables in LOOP
1631 * optimization: faster floating-point SQRT on x86-64
1632 * fixed some bugs revealed by Paul Dietz' test suite:
1633 ** DOCUMENTATION returns NIL instead of "" for method combinations
1634 that don't have a docstring
1636 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1637 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1638 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1639 therefore are not customizeable by user code (as seems to be at
1640 least permitted and maybe required by AMOP). As a consolation,
1641 however, the SBCL implementation of these functions now calls
1642 REINITIALIZE-INSTANCE as specified by AMOP.
1643 * bug fix: slot-definition documentation is propagated as per ANSI
1644 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1645 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1646 argument, as do eslotd initialization methods. (from Pascal
1647 Costanza's "Closer" project)
1648 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1649 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1651 * bug fix: it is now possible to have more than one subclass of
1652 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1653 (reported by Bruno Haible, Pascal Costanza and others)
1654 * bug fix: the dependent update protocol now works for generic
1655 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1656 and Pascal Costanza)
1657 * bug fix: condition-class instances corresponding to
1658 DEFINE-CONDITION forms are now created eagerly. (reported by
1659 Kalle Olavi Niemitalo on comp.lang.lisp)
1660 * bug fix: floating point printing is more accurate in some
1661 circumstances. (thanks to Simon Alexander)
1662 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1663 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1664 * bug fix: callbacks on OS X now preserve stack-alignment.
1665 (thanks to Cyrus Harmon)
1666 * enhancement: the x86-64 disassembler is much better at
1667 disassembling SSE instructions. (thanks to Lutz Euler)
1668 * enhancement: CHECK-TYPE on a variable now allows type-inference
1669 (thanks to Vincent Arkesteijn)
1670 * optimization: improved performance of EUC-JP external format.
1671 (thanks to NIIMI Satoshi)
1672 * optimization: performance improvements to IO on file streams of
1673 :ELEMENT-TYPE CHARACTER
1674 * optimization: much faster memory allocation on x86-64
1675 * optimization: faster garbage collections (latency and throughput)
1677 * optimization: faster bignum subtraction and division on x86 and x86-64
1678 (thanks to Lutz Euler)
1679 * optimization: more accurate type-inference for loops that use a
1680 floating point index variable or a negative step.
1682 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1683 * bug fix: add a workaround to SBCL looping infinitely at startup on
1684 Linux kernels with apparently buggy implementations of personality().
1685 (thanks to Svein Ove Aas)
1686 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1687 (thanks to David Lichteblau)
1688 * bug fix: local bindings shadow global symbol macros for
1689 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1690 * optimization: non-open coded uses of numeric comparison operators
1691 (e.g. >) no longer cons when called with more than one parameter
1692 on platforms supporting dynamic-extent allocation.
1693 * enhancement: saving cores with foreign code loaded is now supported
1694 on MIPS/Linux in addition to the previously supported platforms.
1695 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1696 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1697 * bug fix: division by zero in sb-sprof when no samples were collected
1698 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1699 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1700 (thanks to Alexander Kjeldaas)
1701 * new feature: ignoring the return values of destructive functions
1702 like NREVERSE signals a compile-time style-warning.
1703 (thanks to Kevin Reid)
1704 * new feature: the alignment of alien structure fields can be
1705 explicitly specified. (thanks to Cyrus Harmon)
1706 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1707 and dump core on SIGQUIT
1709 ** incompatible change: threads do not inherit values of specials
1710 from their parents (see manual)
1711 ** bug fix: threads stacks belonging to dead threads are freed by the
1712 next exiting thread, no need to gc to collect thread stacks anymore
1713 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1714 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1715 ** bug fix: dynamic variable and thread start related gc lossage
1716 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1718 * fixed some bugs revealed by Paul Dietz' test suite:
1719 ** SUBTYPEP is slightly more accurate on heinously complicated
1720 CONS types where some of the members have uncertain (in the
1721 NIL, NIL sense) type relationships to each other.
1723 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1724 no longer purified unless :PURIFY T is explicitly specified.
1725 ** Non-purified cores are significantly smaller than before
1727 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1728 * new feature: timers based on Zach Beane's excellent timer package
1729 * added support for the following external formats: koi8-u,
1730 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1731 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1732 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1733 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1734 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1735 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1736 * incompatible change: a threaded SBCL will no longer revert to
1737 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1738 * bug fix: interrupts are disabled until startup is complete; no
1739 more sigsegvs when receiving a signal to soon
1740 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1742 * bug fix: add a workaround for the memory randomization features in
1743 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1744 workaround will only be in effect on systems with the proc filesystem
1746 * bug fix: printing objects of type HASH-TABLE signals a
1747 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1749 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1750 have been running for over 50 days. (reported by Gilbert Baumann)
1751 * bug fix: the logic for getting names of functions gets less
1752 confused when confronded with alternate-metaclass
1753 funcallable-instances. (reported by Cyrus Harmon)
1754 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1755 consistent, even on internal alternate-metaclass objects.
1756 * bug fix: flush closure information collected by physical
1757 environment analysis prepass before the main pass. (bug reported
1759 * bug fix: compiler pack phase does not modify a hashtable, which is
1760 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1761 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1762 may be expanded. (reported by Alexander <malishev> on c.l.l)
1763 * bug fix: no more style-warnings when compiling code using LAST
1764 under high-SPEED low-SPACE settings. (reported by David Wallin
1766 * fixed some incompatibilities between SBCL's MOP and the MOP
1768 ** the METAOBJECT class is now implemented;
1769 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1770 STANDARD-OBJECT, as required;
1771 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1772 now compatible (as required by VALIDATE-SUPERCLASS); there
1773 remains a consistency requirement over the presence or absence
1774 of the FUNCTION class in the superclass list of finalized
1775 classes; see the manual for more details;
1776 ** the :AROUND method for COMPUTE-SLOTS on
1777 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1778 requested slot ordering.
1780 ** bug fix: parent thread now can be gc'ed even with a live
1782 ** bug fix: binding a special with PROGV to no value is not
1783 the same as that symbol not having been bound (thanks to
1785 ** bug fix: binding specials is thread safe (thanks to
1787 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1788 and SB-SPROF do not die with 'no handler for signal XX in
1789 interrupt_handle_now(..)' anymore
1790 ** bug fix: WITH-TIMEOUT works with multiple running threads
1791 * fixed some bugs revealed by Paul Dietz' test suite:
1792 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1793 the :method-class keyword argument.
1795 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1796 * new port: the Solaris operating system on x86 processors is now
1797 mostly supported, though some rough edges in the environment
1798 remain. (thanks to Daisuke Homma)
1799 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1800 space for its heap. (thanks to Thiemo Seufer)
1801 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1802 closures. (thanks to Thiemo Seufer)
1803 * minor incompatible change: eof selects abort in the debugger.
1804 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1805 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1807 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1808 deprecated, and will go away in a future revision of SBCL.
1809 * minor incompatible change: GC-ON and GC-OFF are no longer
1810 implemented with a counter, it does not matter how many times gc
1811 is switched on or off
1812 * bug fix: discriminating functions for generic function classes
1813 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1814 make invalid assumptions about method precedence order. (reported
1816 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1817 platforms. (thanks to Thiemo Seufer)
1818 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1819 * bug fix: correct pathname printing with printer escaping is on.
1820 (thanks to Kevin Reid)
1821 * bug fix: complex VOP definitions in "user-space" no longer trigger
1822 package locks. (reported by Zach Beane)
1823 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1824 for funcallable-instance functions, and is no different from
1826 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1827 characters in the current readtable. (reported by Nicholas Neuss)
1828 * bug fix: SUBTYPEP on various CONS types returns more a more
1829 accurate acknowledgment of its certainty.
1830 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1831 lists in some cases. This partially fixes bug 384.
1832 * flush all standard streams before prompting in the REPL and the
1834 * bug fix: signal handling and triggering gc do not conflict
1835 directly anymore, in particular a high frequency sb-sprof does
1836 not prevent gc from running
1837 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1838 approximation for timezone and DST information between the
1839 universal time epoch and the smallest negative 32-bit time_t.
1840 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1841 year 1899 so long as the encoded time is non-negative.
1842 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1843 the correct answer for non-constant rotate amounts when performing
1844 an inline 32-bit rotation.
1846 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1847 there is only one thread in the session
1848 ** bug fix: memory leak for streams created in one thread and
1849 written to in another
1850 ** bug fix: lockup when compiled with gcc4
1851 ** bug fix: race that allows the gc to be triggered when gc is
1853 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1854 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1856 ** bug fix: finished threads are gc'ed properly
1857 * fixed some bugs revealed by Paul Dietz' test suite:
1858 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1859 has arguments with a different set of applicable methods from
1860 the orignal arguments.
1861 ** The type error thrown by MAP now has a correct expected-type
1863 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1864 name a compiled function.
1865 ** Three MISC tests where a large bignum was improperly coerced to
1866 a float that couldn't represent that bignum during type
1867 derivation were fixed.
1868 ** SUBTYPEP can now handle types involving the negation of a
1869 list-form FUNCTION type.
1870 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1871 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1872 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1874 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1875 * New feature: Experimental support for bivalent streams: streams
1876 opened with :element-type :default now allow character and binary
1877 (unsigned-byte 8) I/O
1878 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1879 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1881 * bug fix: no more highly sporadic "couldn't check whether ~S is
1882 readable" when reading a stream and an interrupt hits in the middle
1883 of a select system call
1884 * compiler better recognizes complex arrays (reported by Eduardo
1886 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1887 for variables on SBCL built with linkage-tables. (reported by Luis
1889 * various error reporting improvements.
1890 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1891 (Thanks to Thiemo Seufer)
1892 * bug fix: nested reader invokations work correctly
1893 * bug fix: it is possible to have simultaneous references to foreign
1894 code and foreign data with the same name.
1896 ** added x86-64 support
1897 ** incompatible change: the threading api now works with thread
1898 objects instead of thread ids
1899 ** bug fix: threads are protected from signals and interruption when
1900 starting up or going down
1901 ** bug fix: a race where an exiting thread could lose its stack to gc
1902 ** bug fix: don't halt on infinite error in threads if possible
1903 ** fixed numerous gc deadlocks introduced in the pthread merge
1904 ** bug fix: fixed thread safety issues in read and print
1905 ** bug fix: debugger doesn't hang on session lock if interrupted at
1906 an inappropriate moment
1907 ** bug fix: run-program is now thread safe(r)
1908 ** bug fix: inner with-recursive-lock no longer releases the mutex
1909 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1910 * fixed some bugs revealed by Paul Dietz' test suite:
1911 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1912 EXPECTED-TYPE slots filled.
1913 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1915 ** MAKE-CONDITION accepts classes as type-designators.
1916 ** COMPILE may never return NIL.
1917 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1918 range before calling Unix time functions
1920 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1921 * numerous signal handling fixes to increase stability
1922 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1923 * minor incompatible change: we now correctly canonize default
1924 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1925 as per the MOP, rather than the historical (INITARG INITFUNCTION
1926 INITFORM). (reported by Bruno Haible)
1927 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1928 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1929 for more information.
1930 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1931 pathname is a directory pathname.
1932 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1933 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1935 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1936 :METACLASS argument in addition to a class name. (reported by
1937 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1938 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1939 (reported by Bruno Haible; patch from Gerd Moellmann)
1940 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1942 * bug fix: more cleanups to the floating point exception handling on
1943 x86-64 (thanks to James Knight)
1944 * bug fix: the compiler does not try to constant fold calls of
1945 COERCE and BIT-* functions when they return freshly constructed
1946 objects. (reported by Nikodemus Siivola and Paul Dietz)
1947 * optimization: improved the MIPS versions of generic (in the
1948 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1949 * optimization: direct conversion of (unsigned-byte 32) to floats on
1950 the PowerPC platform.
1951 * optimization: structure instances with raw slots now use less
1952 memory, and probably show better memory locality. (thanks to
1954 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1955 are treated as requests for stack allocation on the x86-64,
1956 Alpha-32, PPC and SPARC platforms.
1957 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1958 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1959 (thanks to Tony Martinez)
1961 ** gcing a dead thread can no longer lead to lockups
1962 ** threads block signals until they are set up properly
1963 ** errno is no longer shared by threads
1964 ** interrupt-thread restores the eflags register on x86
1965 ** fixed some lockups due to gc/thread interaction
1966 * fixed some bugs revealed by Paul Dietz' test suite:
1967 ** invalid dotted lists no longer raise a read error when
1968 *READ-SUPPRESS* is T
1969 ** signal an error if a symbol that names a declaration is used
1970 as the name of a type, or vice versa
1971 ** allow using the (declare (typespec var*)) abbreviation for
1972 (declare (type typespec var*)) with all type specifiers
1973 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1974 ** always return NIL from PPRINT-POP when OBJECT is NIL
1975 ** don't signal errors when pretty-printing malformed LABELS,
1976 FLET or MACROLET forms
1977 ** declarations in a DOLIST body are also in scope for the
1979 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1981 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1984 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1985 * fixed cross-compiler leakages that prevented building a 32-bit
1986 target with a 64-bit host compiler.
1987 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1988 opened with :IF-EXISTS :OVERWRITE.
1989 * fixed bug 281: error for an invalid qualifier in a short-form method
1990 combination method is not signalled until the faulty method is called.
1991 * bug fix: iteration variable type inferrer failed to deal with open
1992 intervals. (reported by Alan Shields)
1993 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1994 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1995 or more runtime options were provided to the sbcl binary.
1996 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1997 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1998 * optimization: there's now a fast-path for fixnum arguments in the
1999 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2000 * optimization: the code generated on x86-64 is more compact thanks
2001 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2002 * bug fix: floating-point exception handling now partly works on
2003 x86-64. (Thanks to James Knight)
2004 * improvement to the MIPS backend from Thiemo Seufer: C-style
2005 64-bit long long arguments and return values to alien functions
2007 * fixed some bugs revealed by Paul Dietz' test suite:
2008 ** the type-error signalled from WARN has a filled-in DATUM slot.
2009 ** the type-error required when a stream is not associated with
2010 a file has the stream as its datum.
2011 ** type-errors on single-floats on x86-64 no longer have
2012 :INVALID-OBJECT as the datum
2013 ** the type-errors signalled for invalid function names now have
2014 a correct expected type
2015 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2016 for structures defined with a :TYPE. Documentation strings for
2017 typed structures are no longer immediately discarded
2018 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2019 broadcast streams and synonym streams. FILE-LENGTH now also works
2020 on broadcast streams.
2022 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2023 * incompatible change: the --noprogrammer option, deprecated since
2024 version 0.7.5, has been removed. Please use the equivalent
2025 --disable-debugger option instead.
2026 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2028 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2029 inoperational for a while now) has been completely removed.
2030 * null lexical environments are now printed as #<NULL-LEXENV>,
2031 significantly reducing the amount of clutter in typical backtraces.
2032 * documentation on weak pointers, finalization, and after GC hooks
2033 has been added to the manual.
2034 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2035 as other specialized array types, is much faster. SUBSEQ and
2036 COPY-SEQ on such arrays have also been sped up.
2037 * optimization: EQL is now more efficient when at least other argument
2038 is known to be of type (OR FIXNUM (NOT NUMBER)).
2039 * fixed bug: the runtime is now less vulnerable to changes in the
2040 size of the SBCL object on OS X, and virtual memory is reserved for
2041 all spaces that need to be at a fixed address.
2042 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2043 * fixed bug: finalizers and after GC hooks that cause consing are now
2045 * fixed bug: compiler error messages and summaries are now printed to
2046 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2047 * fixed inference of the upper bound of an iteration variable.
2048 (reported by Rajat Datta).
2049 * fixed bug 211e: calling local functions with duplicated constant
2050 keyword argument no longer causes a bogus style warning about an
2052 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2053 ftype declaration to be disregarded. (reported by Dave Roberts)
2054 * fixed bug 373: caused by erronous compilation of references to alien
2055 variables in the runtime on ppc/darwin.
2056 * fixed bug 376: CONJUGATE type deriver.
2057 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2058 (reported by Baughn on #lisp)
2059 * a cross-compiler bug on non-x86 platforms has been identified and
2060 fixed. (thanks to Bruno Haible)
2061 * improvements to the MIPS runtime code for increased stability.
2062 (thanks to Thiemo Seufer)
2063 * increased the maximimum compact environment size to allow
2064 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2065 * partial workaround for bug 135: don't name the function we're
2066 calling for hairy cases of EVAL, so as not to accumulate one environment
2067 entry per call to EVAL. (reported by Kevin Reid)
2068 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2069 * optimization: type testing for non-vector arrays should be faster.
2070 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2072 * bug fix: setting 31st element of a bit vector to zero did not work
2074 * bug fix: redefining a class definition which failed due to a
2075 previous accessor / function clash now works (but see BUGS entry
2076 #380 for more problems in this area). (thanks to Zach Beane)
2077 * the long form of DEFINE-METHOD-COMBINATION disables method group
2078 checking when given a single method group with pattern *. (thanks
2080 * on x86 compiler supports stack allocation of results of simple
2081 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2082 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2083 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2084 * fixed some bugs related to Unicode integration:
2085 ** the restarts for recovering from input and output encoding
2086 errors only appear when there is in fact such an error to
2088 * fixed some bugs revealed by Paul Dietz' test suite:
2089 ** MISC.549 and similar: late transformation of unsafe type
2090 assertions into derived types caused unexpected code
2092 ** SCALE-FLOAT type deriver is less wrong.
2093 ** type derivers for EXP, LOG and similar functions compute result
2094 types for complex arguments better.
2095 ** (MISC.563) CONJUGATE type deriver works for very restricted
2097 ** out-of-line type testers for character strings are available.
2098 ** EQUAL compiler transform understands specialness of objects
2100 ** accessing double-floats stored on the stack now works on x86-64.
2101 ** debugger internals could sometimes create invalid lispobjs,
2102 resulting in GC crashes.
2103 ** MISC.548: type check weakening can convert required type into
2105 ** initialization forms for bindings are not in scope of free special
2108 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2109 * incompatible change: thread support for non-NPTL systems has
2110 been removed - locking is buggy and unreliable. A threaded
2111 SBCL build will now warn at startup and refuse to create
2112 new threads, unless futex support is detected in the kernel
2113 * incompatible change: the top level REPL now has only an ABORT
2114 restart associated with it, not TOPLEVEL and ABORT as it used to.
2115 TOP and TOPLEVEL are now available as debugger commands for
2116 returning to the top level.
2117 * incompatible change: forms evaluated in the REPL now use the
2118 global optimization policy.
2119 * incompatible change: user- and system-initialization files are
2120 no longer processed with LOAD, but by READ and EVAL; hence the
2121 global optimization policy, startup package, readtable, etc,
2123 * The .fasl file format number has been incremented because of
2124 various incompatible changes.
2125 * internal entry point details and argument counts no longer appear
2126 in backtraces unless explicitly requested by setting
2127 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2128 * built-in and standard functions no longer have names like "top
2129 level local call to FOO".
2130 * fixed bug 32: functions defined in non-null lexical environments
2131 now have more legible printed representation
2132 * fixed bug 33: functions defined in non-null lexical environemnts
2133 are now more amenable to inspection by INSPECT.
2134 * workaround for bug 354: XEPs no longer appear in backtraces unless
2135 explicitly requested.
2136 * fixed bug: receiving the signal which results from attempting to
2137 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2138 SIGBUS on other *BSDs) on architectures where the C stack is also
2139 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2140 to debugger confusion or wild instability. (reported by Cheuksan
2142 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2143 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2144 (reported by Lutz Euler)
2145 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2146 compiled code. (reported by Paul Dietz)
2147 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2148 specialized parameter to a method to something that is not TYPEP
2149 the specializer is now possible.
2150 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2151 face of package deletion.
2152 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2153 pathname. (reported by David Tolpin on c.l.l)
2154 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2155 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2156 STRING-STREAM and FILE-STREAM, respectively.
2157 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2158 than previously; in addition, its test suite is now run on build.
2159 (thanks to Luke Gorrie)
2160 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2161 * optimization: added a immediate representation for single-floats
2163 * fixed some bugs revealed by Paul Dietz' test suite:
2164 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2165 ** attempting to create a package with a colliding nickname causes
2166 correctable errors to be signalled.
2167 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2168 ** several x86-64 backend bugs related to sign-extension of immediate
2171 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2172 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2173 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2175 * fixed loading of multiply forward-referenced layouts.
2176 (thanks to Cheuksan Wang)
2177 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2178 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2179 (see COMPILE-FILE documentation for details of :PRINT option)
2180 * fixed bugs 19 and 317: fixed-format floating point printing is
2181 more accurate. This also fixes a bug reported by Adam Warner
2182 related to the ~@F format directive.
2183 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2185 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2186 dispatch table if the from-char is a dispatch macro character.
2187 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2188 by the wordsize no longer ignore the last word. (reported by Lutz
2190 * fixed bug in type checking of dynamic-extent variables. (reported
2192 * optimization: sequence traversal functions use their freedom to
2193 coerce function designators to functions.
2194 * optimization: code with many calls to CLOS methods specialized on
2195 CLOS classes has had redundant type checks removed.
2196 * optimization: added declarations to speed up operations that access
2197 the internal character database (for example STRING-UPCASE)
2198 * optimization: comparison operations between floats and sufficiently small
2199 fixnums no longer create extra rationals
2200 * fixed some bugs related to Unicode integration:
2201 ** portions of multibyte characters at the end of buffers for
2202 character-based file input are correctly transferred to the
2203 start of the buffer at the next read.
2204 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2205 passing it through to OPEN.
2206 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2207 argument given to internal calls to OPEN.
2208 ** the built-in comment readers (introduced by character sequences
2209 ";" and "#|") are more forgiving to encoding errors; they will
2210 STYLE-WARN and then attempt to resync the stream at a character
2211 boundary. (thanks to Teemu Kalvas)
2212 * fixed some bugs in the x86-64 port:
2213 ** Negative short int return values from c-calls are sign-extended
2215 ** The stack is aligned to 16-bytes for c-calls, as required by
2216 the ABI. (thanks to Cheuksan Wang)
2217 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2218 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2219 for enums. (thanks to Vincent Arkesteijn)
2220 ** Multiple small optimizations and bugfixes for floating point
2222 * fixed some bugs revealed by Paul Dietz' test suite:
2223 ** Space, Tab, Linefeed, Return and Page have the invalid
2224 secondary constituent character trait.
2225 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2227 ** WITH-INPUT-FROM-STRING should only update the index place on
2229 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2230 works more reliably.
2231 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2232 with one-dimensional arrays with fill pointers.
2233 ** TYPE-OF failed on a complex with an integer realpart and a
2235 ** compiler failure during type inference for the code of form
2236 (IF (EQL X (THE ...)) ...) (MISC.535).
2238 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2239 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2240 platform. The port supports 61-bit fixnums, large memory spaces
2241 and reloading shared object files.
2242 * enhancement: saving cores with foreign code loaded is now
2243 supported on ppc/Darwin in addition to the previously supported
2245 * enhancement: the statistical profiler now walks deeper into the
2246 call stack for more meaningful call-graphs and accrued time
2247 reports (x86/x86-64 only). It also now reports time spent in
2249 * enhancement: it is now possible to trace most individual methods
2250 of a generic function in addition to tracing the generic function
2252 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2254 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2255 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2256 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2257 produces an error. (thanks to Vincent Arkesteijn)
2258 * bug fix: NAMESTRING on pathnames with :WILD components in their
2259 directories works correctly. (thanks to Artem V. Andreev)
2260 * fixed bug 125: compiler preserves identity of closures. (reported
2262 * bug fixed: functions with &REST arguments sometimes failed with
2263 "Undefined function" when compiled with (DEBUG 3). (reported by
2265 * bug fix: overflow during compiling of setting element of a bit
2266 vector with constant index and value. (reported by Timmy Douglas)
2267 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2268 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2269 * on x86 compiler partially supports stack allocation of dynamic-extent
2271 * GO and RETURN-FROM do not check the extent of their exit points
2272 when compiled with SAFETY 0.
2273 * fixed some bugs related to Unicode integration:
2274 ** encoding and decoding errors are now much more robustly
2275 handled; it should now be possible to recover even from invalid
2276 input or output to the terminal. (thanks to Teemu Kalvas)
2277 ** provided a first cut at implementing STRING-TO-OCTETS and
2278 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2279 ** altered the SB-MD5 contributed module slightly, changing the
2280 interface just enough for it to be supportable for builds where
2281 lisp characters are not eight bits.
2282 * fixed some bugs revealed by Paul Dietz' test suite:
2283 ** the FORMATTER-generated functions for ~V[ conditionals require
2284 the correct number of arguments.
2285 ** READ-FROM-STRING returns the mandated second value when applied
2286 to displaced strings.
2287 ** the #\Rubout and #\Backspace characters are treated as invalid
2288 constituent characters by the tokenizer.
2290 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2291 * new feature: reloading changed shared object files with
2292 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2293 * new feature: references to foreign variables and functions
2294 can now be compiled and loaded before the corresponding shared
2295 object file is loaded, as long as the foreign definitions are
2296 available at runtime.
2297 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2298 supported. (thanks to Dan Debertin)
2299 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2300 just keywords. (thanks to Vincent Arkesteijn)
2301 * fixed bug #331: structure-class instances corresponding to
2302 DEFSTRUCT forms are now created eagerly.
2303 * fixed bug #345: backtraces from calls to undefined functions work
2304 on x86 as well. Related bug #61 is now also partially fixed on x86
2305 (backtraces from throws to unknown catch tags.)
2306 * bug fix: lambda-list parsing is now stricter vrt. order and number
2307 of lambda-list keywords.
2308 * bug fix: as specified by AMOP, an error is signalled if a
2309 class-option appears multiple times in a DEFCLASS form. (reported
2311 * bug fix: RANDOM can be compiled when the compiler derives the type
2312 of its numeric argument as a disjoint set of small integers.
2313 (reported by Paul Dietz)
2314 * bug fix: starting a core saved with shared objects loaded when
2315 those objects are not available no longer causes threaded SBCL to
2316 hang. (reported by Sean Ross)
2317 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2319 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2320 argument, which must always be NIL. (reported by Kalle Niemitalo)
2321 * bug fix: printing 1.0d+23 no longer results in an error.
2322 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2323 * bug fix: structure slot setters preserve evaluation order. (thanks
2325 * fixed some bugs related to Unicode integration:
2326 ** RUN-PROGRAM can allow its child to take input from a Lisp
2327 stream. (reported by Stefan Scholl)
2328 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2329 locales. (reported by Ken Causey)
2330 * fixed some bugs revealed by Paul Dietz' test suite:
2331 ** INCF, DECF and REMF evaluate their place form as specified in
2333 ** FORMATTER expands ~{ ~} iteration directives with V or #
2334 parameters correctly.
2335 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2336 consequent uses no arguments correctly.
2337 ** the system has a partial understanding of the (COMPLEX RATIO)
2339 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2342 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2343 * new feature: a build-time option (controlled by the :SB-UNICODE
2344 keyword feature, enabled by default) for building the system with
2345 support for the entire 21-bit character space defined by the
2347 * new feature: the system now has rudimentary external-format
2348 support; the primary user-visible change at this time is that
2349 characters with the high bit set (such as lower-case-e-acute) will
2350 print correctly to a terminal in a UTF-8 environment.
2351 * minor incompatible change: BASE-CHAR no longer names a class;
2352 however, CHARACTER continues to do so, as required by ANSI.
2353 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2354 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2355 has been moved to the SB-EXT package (temporarily re-exported from
2357 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2358 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2360 * fixed bug #351: better error-handlind and reporting for malformed
2362 * fixed bug #350: bignum-printing is now more memory-efficient,
2363 allowing printing of very large bignums, eg. (expt 2 10000000).
2364 (reported by Bruno Haible)
2365 * fixed bug #302: better primitive-type selection for intersection
2367 * fixed bug #308: non-graphic characters now all have names, as
2368 required. (reported by Bruno Haible)
2369 * bug fix: redefining a class with different superclasses now correctly
2370 removes it from the direct-subclasses of its previous superclasses.
2371 (reported by David Morse)
2372 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2373 new value now works. (reported by Bruno Haible)
2374 * bug fix: correct canonicalization of multiple non-standard slot
2375 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2376 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2377 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2378 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2379 now exists, an signals an error.
2380 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2381 during macroexpansion for non-iteration variables as well. (reported
2382 by Bruno Haible for CMUCL)
2383 * bug fix: Cyclic structures and unprintable objects in compiler
2384 messages no longer cause errors. (reported by Bruno Haible)
2385 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2386 and READ-FROM-STRING all now return a primary value of NIL if
2387 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2388 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2389 (reported by Bruno Haible for CMUCL)
2390 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2391 do not designate a condition. (reported by Bruno Haible for
2393 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2394 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2395 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2396 permitting resolution in favour of any of the conflicting symbols.
2397 (reported by Bruno Haible for CMUCL)
2398 * bug fix: EQUAL compiler optimizations is less aggressive on
2399 strings which can potentially compare true despite having distinct
2400 specialized array element types.
2401 * bug fix: unit enumerations can be defined without dividing by
2402 zero. (thanks to Vincent Arkesteijn)
2403 * FORMAT compile-time argument count checking has been enhanced.
2404 (report from Bruno Haible for CMUCL)
2405 * a partial workaround for the bug 262: the compiler does not try to
2406 inline-expand a local function doing RETURN-FROM from a deleted
2407 BLOCK. (thanks to Peter Denno for the bug report and to David
2408 Wragg for the simple test case)
2409 * fixed some bugs revealed by Paul Dietz' test suite:
2410 ** RENAME-PACKAGE allows all package designators as new package
2412 ** constraint propagation and lambda variable substitution are
2413 more cautious in dealing with partially deleted code.
2414 ** compiler sometimes lost reoptimization passes.
2415 ** CERROR, given a condition as condition designator, passes its
2416 remaining arguments to the continue format control without
2418 ** Case-altering FORMAT directives work correctly on non-ASCII
2420 ** The REAL type specifier handles bounds outside the floating
2421 point ranges without signalling FLOATING-POINT-OVERFLOW.
2422 ** Functions with IR1-transformations can create intercomponent
2423 references to global functions.
2424 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2426 ** FORMAT ~R treats a nil value for its first parameter correctly.
2428 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2429 * enhancement: saving cores with foreign code loaded is now
2430 supported on x86/NetBSD and sparc/Linux in addition to the previously
2431 supported platforms.
2432 * bug fix: on some platforms repeated installations caused multiple
2433 copies of HTML documentation to be installed -- should not happen
2434 any more. (reported by Stefan Scholl)
2435 * bug fix: parsing self-recursive alien record types multiple times
2436 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2437 original patch by Helmut Eller for CMUCL)
2438 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2439 (thanks to Richard Kreuter)
2440 * bug fix: defining classes whose accessors are methods on existing
2441 generic functions in other (locked) packages no longer signals
2442 bogus package lock violations. (reported by François-René Rideau)
2443 * bug fix: special variables as DEFMETHOD parameters no longer have
2444 associated bogus type declarations. (reported by David Wragg and
2446 * bug fix: read-write consistency on streams of element-type
2447 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2448 * bug fix: redefiniton of the only method of a generic function with
2449 no DEFGENERIC no longer emits a full WARNING. In addition,
2450 redefinition of generic functions with no DEFGENERIC to an
2451 incompatible lambda list now signals an error. (thanks to Zach
2453 * bug fix: DEFGENERIC now works even when there's a function of the
2454 same name in an enclosing lexical environment. (thanks to Zach
2456 * fixed compiler failure, caused by instrumenting code during
2457 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2458 * optimization: added loop analysis and improved register allocation
2459 * fixed some bugs revealed by Paul Dietz' test suite:
2460 ** POSITION on displaced vectors with non-zero displacement
2461 returns the right answer.
2462 ** (SIMPLE-STRING) is a valid type specifier for sequence
2464 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2466 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2467 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2469 ** The justification version of the FORMAT ~< directive treats
2470 non-zero minpad parameter correctly.
2472 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2473 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2474 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2475 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2476 the supported interface.
2477 * new feature: Single-stepping of code compiled with DEBUG 2 or
2478 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2479 * new feature: saving cores with foreign code loaded is now
2480 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2481 Timothy Moore's work for CMUCL)
2482 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2483 parameters to * instead of NIL if no initform is supplied.
2484 (reported by Johan Bockgaard)
2485 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2486 correctly when FUNCALL appears as the car of the form. Note:
2487 despite this FUNCALL forms are not currently subject to
2488 compiler-macro expansion. (port of Raymond Toy's fix for the
2489 same from CMUCL, reported by Johan Bockgaard)
2490 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2491 (thanks for Teemu Kalvas)
2492 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2493 case instead of terminating the iteration (thanks for Julian
2494 Squires, Sean Champ and Raymond Toy)
2495 * bug fix: incorrect expansion of defgeneric that caused a style
2496 warning. (thanks for Zach Beane)
2497 * bug fix: slot accessor effective method computation works properly
2498 for classes with multiple non-standard applicable methods on
2499 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2500 * on x86 compiler supports stack allocation of results of LIST and
2501 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2502 CMUCL implementation by Gerd Moellmann)
2503 * fixed some bugs revealed by Paul Dietz' test suite:
2504 ** FORMAT strings with both the ~<~:;~> form of the justification
2505 directive and pretty-printing directives cause an error.
2507 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2508 * incompatible change: the internal functions
2509 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2510 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2511 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2512 instead of the old functions.
2513 * new feature: on platforms where "dladdr" is available foreign
2514 function names now appear in backtraces. (based on Helmut Eller's
2516 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2517 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2519 * documentation: ASDF manual is now distributed with SBCL.
2520 * bug fix: SBCL can now load its contributed modules with REQUIRE
2521 even if the system-provided entries have been removed from
2522 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2524 * bug fix: backtraces involving undefined functions or assembly
2525 routines are more informative. (thanks to Brian Downing)
2526 * bug fix: mutually referent alien structures now work correctly.
2527 (reported by Rick Taube)
2528 * bug fix: structures defined by WITH-ALIEN can be referred to
2529 within other definitions in the same WITH-ALIEN.
2530 * bug fix: division operators (MOD, TRUNCATE and the like) with
2531 constant zero divisors and integer dividends no longer generate
2533 * bug fix: provide default methods for INPUT-STREAM-P and
2534 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2535 * bug fix: improve the detection and resolution of MOP metacycles
2536 (where effective method computation depends on the generic function
2537 having its effective method computed). (reported by Bruno Haible)
2538 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2539 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2540 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2541 * bug fix: pathnames with relative directory components can be
2542 represented relative to default pathnames.
2543 * optimization: in taking the GCD of bignums, reduce the two bignums
2544 to approximately the same size (using Euclid's algorithm) before
2545 applying the more sophisticated binary GCD. (thanks to Juho
2547 * optimization: COUNT on bitvectors now operates word-at-a-time.
2548 * optimization: ASH with a positive, but not necessarily constant,
2549 (leftwards) shift, when in a modular context, is compiled to a
2551 * fixed some bugs revealed by Paul Dietz' test suite:
2552 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2553 if the corresponding argument is NIL.
2554 ** FORMAT directives accepting a minpad parameter treat negative
2556 ** literal commas as character parameters to FORMAT directives are
2558 ** literal spaces directly after ~<Newline> directives within a
2559 format-logical-block (~:< ~@:>) do not induce :FILL-style
2560 conditional newlines.
2561 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2562 as specified: it no longer includes conditional newlines).
2563 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2565 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2566 :PER-LINE-PREFIX argument does not evaluate to a string.
2568 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2569 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2570 the manual for details; for now, package locks can be disabled by
2571 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2572 if no major problems are found then it is likely that they will be
2573 compiled in unconditionally.
2574 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2575 unsupported operators on all platforms. To load a shared library
2576 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2577 object file, link it into a shared library outside of SBCL and
2578 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2580 * bug workaround: ROOM T and the GC were not working together
2581 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2582 reporting facility aren't preserved. That reporting has been
2583 disabled, so now until and unless someone figures out how to make it
2584 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2585 * minor incompatible change: as threatened around sbcl-0.8.0, the
2586 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2587 The symbols are also exported from SB-PCL for backwards
2588 compatibility, but more so than before SB-PCL should be treated as
2589 an implementation-internal package.
2590 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2592 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2593 It is known as of this release not to work on the Alpha, however.
2594 * fixed bug #167: errors signalled due to illegal syntax in method
2595 bodies are now more legible.
2596 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2597 designators and can hence be used with TYPEP.
2598 * fixed bug #333: CHECK-TYPE now ensures that the type error
2599 signalled, if any, has the right object to be accessed by
2600 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2601 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2602 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2604 * fixed bug #334: programmatic addition of slots using specialized
2605 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2606 and :ALLOCATION :CLASS slots.
2607 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2608 float exponents. (rereported by Peter Seibel)
2609 * fixed a bug: #\Space (and other whitespace characters) are no
2610 longer considered to be macro characters in standard syntax by
2611 GET-MACRO-CHARACTER.
2612 * fixed bug: initialization of condition class metaobjects no longer
2613 causes an instance of the condition to be created. (reported by
2615 * fixed bug: it is now possible to have slots such that
2616 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2617 description is neither :INSTANCE nor :CLASS.
2618 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2619 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2620 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2621 non-standard SLOT-DEFINITION-ALLOCATION values.
2622 * fixed bugs: various race conditions handling exiting threads.
2623 CL-PPCRE's thread torture test now passes.
2624 * fixed arguably-a-bug: GC time proportional to number of threads in
2625 system even when most of them are idle
2626 * optimization: improved performance of BIT and SBIT on bit-vectors.
2627 * .fasl file incompatibility: The fasl file version number has
2628 been incremented because of changes associated with package locks.
2630 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2631 * minor incompatible change: the system no longer provides
2632 optimization hints (conditions which are TYPEP
2633 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2634 mode; these hints are still emitted when higher SPEED optimization
2636 * new contrib module: a sampling profiler (profiling by statistical
2637 sampling, rather than by instrumenting functions) is available as
2638 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2639 * the behaviour of the standard function ED is now customizeable by
2640 third parties through a hook variable: see ED's documentation
2641 string for information on the protocol.
2642 * the compiler no longer emits efficiency notes for (FUNCALL X)
2643 when the type of X is uncertain under default optimization
2645 * fixed bug 276: mutating a binding of a specialized parameter to a
2646 method to something that is not TYPEP the specializer is now
2648 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2649 exhibit the required behaviour on the x86 platform. (thanks to
2650 Peter van Eynde, Eric Marsden and Bruno Haible)
2651 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2652 even for difficult arguments. (reported by Peter Graves)
2653 * fixed bug 141a: the backquote printer now descends quoted
2655 * fixed another bug in backquote printing: no more destructive
2656 modification of the form's list structure. (reported by Brian
2658 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2659 move between its address being taken and the call to
2660 interrupt_thread, fixing a crashing race condition.
2661 * the SB-POSIX contrib implementation has been adjusted so that it
2662 no longer exhibits ridiculously poor performance when constructing
2663 instances corresponding to C structs.
2665 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2666 * minor incompatible change: the sb-grovel contrib now treats C
2667 structures as alien (in the sense of SB-ALIEN) objects rather than
2668 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2669 has implications for memory management of client code
2670 (sb-grovel-returned objects must now be manually managed) and for
2671 type safety (alien objects now have full types).
2672 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2673 used to control emission of compiler diagnostics, rather than the
2674 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2675 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2676 quality should be considered deprecated.
2677 * install.sh now installs the user manual as well
2678 * (not quite a new documentable feature, but worth considering in
2679 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2680 beginnings of a semantically meaningful condition hierarchy is
2681 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2683 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2684 designator as the defaults argument.
2685 * fixed bug: Displaced arrays whose displaced-to array has become
2686 too small now cause ARRAY-DIMENSION to signal an error, providing
2687 for safer bounds-checking. (reported by Bruno Haible)
2688 * fixed bug: DEFCLASS slot definitions with identical :READER and
2689 :WRITER names now signal a reasonable error. (reported by Thomas
2691 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2693 * fixed bug: Invalid slot specification errors now print correctly.
2694 (thanks to Zach Beane)
2695 * fixed bug 320: Shared to local slot value transfers in class
2696 redefinitions now happen corrently from superclasses as
2697 well. (reported by Bruno Haible)
2698 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2700 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2701 improper lists correctly. (reported by Bruno Haible)
2702 * fixed bug 313: source-transform for <fun-name> was erroneously
2703 applied to a call of a value of a variable with name <fun-name>.
2704 (reported by Antonio Menezes Leitao)
2705 * fixed bug 307: The obsolete instance protocol ensures that
2706 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2707 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2708 remove dead unknown-values globs from the middle of the stack.
2709 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2710 easier to resume long computations after using *BREAK-ON-SIGNALS*
2711 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2712 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2713 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2714 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2715 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2716 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2718 * fixed a (fairly theoretical) bug in string printing: if
2719 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2720 does not have array-element-type equal to the most general string
2722 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2723 function name. (thanks to Nikodemus Siivola)
2724 * fixed bug: compile-time format string checker failed on
2725 non-closed ~{. (reported by Thomas F Burdick)
2726 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2727 don't warn on legal loop code involving more than one aggregate
2728 boolean. (thanks to Nikodemus Siivola)
2729 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2730 in keyword position to MAKE-PACKAGE was not being reported as
2732 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2733 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2735 * fixed bugs 280 and 312: the checking for multiple definitions in a
2736 file is less likely to become confused by uses of inline
2738 * fixed bug: the #S reader macro performs the keyword coercion
2739 specified for slot names. (reported by Kalle Niemitalo)
2740 * fixed bug: lambda lists may contain symbols whose names start with
2741 & but are not lambda-list-keywords; their occurrence triggers a
2743 * fixed bug 321: define-method-combination argument lambda lists do
2744 not cause invalid code to be generated when &optional or &aux
2745 variables have default values. (reported by Bruno Haible)
2746 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2747 have CLOS classes; this appears also to have fixed reported
2748 instability in stack exhaustion detection.
2749 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2750 MUFFLE-WARNING when no associated restart is present is now
2752 * optimization: rearranged the expansion of various defining macros
2753 so that each expands into only one top-level form in a
2754 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2756 * optimization: used a previously little-used slot in symbols to
2757 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2759 * fixed some bugs revealed by Paul Dietz' test suite:
2760 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2762 ** Fixed an optimization bug related to inheritance of initforms
2763 from local to shared slots.
2764 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2765 ** CAST optimizer forgot to flush argument derived type.
2766 ** print/read consistency on floats is now orders of magnitude
2767 more likely. (thanks also to Bruno Haible for a similar report
2769 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2770 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2771 for objects of type REAL. Make it so.
2772 ** SXHASH is specified (infelicitously) to respect similarity,
2773 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2774 it so. (thanks to Markus Ziegler)
2775 ** on the Alpha, the compiler succeeds in compiling functions
2776 returning a known number of arguments greater than 63.
2777 ** fixed handling of invalid NIL arguments in keyword position
2779 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2781 ** provided a readably-printable representation for RANDOM-STATE
2783 ** ensured that pathnames, where they have a namestring, always
2784 print using #P"..." syntax.
2786 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2787 * Support for the forthcoming 2.0 version of the NetBSD kernel
2788 running on x86 hardware has been added. (thanks to Perry
2789 E. Metzger most immediately, and others for their past work)
2790 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2791 current release version; SBCL's OpenBSD support had been broken
2792 since about the time of OpenBSD's switch to ELF binary format.)
2793 * [placeholder for DX summary]
2794 ** user code with &REST lists declared dynamic-extent, under high
2795 speed or space and low safety and debug optimization policy.
2796 * The manual has been converted to Texinfo format and the debugger
2797 chapter from the cmucl manual has been added.
2798 * A facility has been added to extract documentation strings from
2799 sbcl and store them as Texinfo-formatted snippets for inclusion in
2800 the manual (via Texinfo's @include directive)
2801 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2802 the test case to Dave Roberts)
2803 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2804 pointers. (reported by Sean Ross)
2805 * bug fix: PROFILE output is printed nicely even for large numerical
2806 values. (thanks to Zach Beane)
2807 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2808 greater than 32 handle EOF correctly.
2809 * bug fix: on X86 an immediate argument of the IMUL instruction is
2810 correctly printed in disassembly. (thanks to Lutz Euler)
2811 * bug fix: class slots in redefined classes preserve their old
2812 values. (thanks to Bruno Haible and Nikodemus Siivola)
2813 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2814 succeeds. (reported by Marco Baringer)
2815 * fixed some bugs revealed by Paul Dietz' test suite:
2816 ** READ-SEQUENCE now works on ECHO-STREAMs.
2817 ** RATIONALIZE works more according to its specification. (thanks
2820 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2821 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2822 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2823 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2824 should matter to you only if you rebind the printer control
2825 variables and then find you want different bindings in the
2826 debugger than in the ordinary execution of your program.)
2827 * The runtime build system has been tweaked to support building
2828 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2829 assembler and linker. (thanks to Nikodemus Siivola)
2830 * Unbound, undefined, undeclared variables now trigger full
2831 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2832 more often programmer error than deliberate exploitation of undefined
2834 * optimization: the hash algorithm for strings has changed to one
2835 that is less vulnerable to spurious collisions. (thanks to Juho
2837 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2838 needless bounds checking. (thanks to Juho Snellman)
2839 * optimization: implemented multiplication as a modular
2840 (UNSIGNED-BYTE 32) operation on the PPC backend.
2841 * fixed some bugs revealed by Paul Dietz' test suite:
2842 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2844 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2845 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2846 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2848 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2850 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2852 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2853 their output stream on EOF from read.
2854 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2855 have been read to end-of-file.
2856 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2858 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2859 description of determination of which consecutive characters
2861 ** Printing the "Space" character with escaping on now yields "#\\ ",
2862 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2863 ** Reading floating-point numbers with *READ-BASE* set to a number
2864 less than 10 works correctly.
2865 ** Reading floating-point numbers with *READ-BASE* set to a number
2866 more than 10 works correctly.
2867 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2868 the readtable currently in effect.
2870 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2871 * minor incompatible change: parsing of namestrings on a physical
2872 (Unix) host has changed; numbers after the final #\. in a
2873 namestring are no longer interpreted as a version field. This is
2874 intented to be largely invisible to the user, except that the
2875 meaning of the namestring "*.*.*" has changed: it now refers to a
2876 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2877 should usually be replaced by
2878 (make-pathname :name :wild :type :wild :version :wild)
2879 with the added benefit that this is more likely to be portable.
2880 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2881 option to OPEN now signals an error if the file being opened
2882 exists; this may have an impact on existing code.
2883 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2884 signals received, on the PowerPC platforms (both Linux and
2885 Darwin). (thanks to Pierre Mai for pointing out the location of
2887 * several fixes on OS X: The system now builds and runs cleanly on
2888 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2889 (thanks to Brian Mastenbrook)
2890 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2891 second-resolution: integer multiples of 1/3600 between -24 and 24.
2892 (thanks to Vincent Arkesteijn)
2893 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2894 type when called with 1 argument; PEEK-CHAR checked type of
2895 PEEK-TYPE only after having read first character from a
2896 stream. (reported by Peter Graves)
2897 * bug fix: the garbage collector now has much better locality
2898 behaviour, and in particular no longer treats all memory as being
2899 exhausted when many small objects point to each other in a deeply
2901 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2902 recognized as being TYPEP their class.
2903 * bug fix: the PUSHNEW documentation string has been corrected.
2904 (thanks to Vincent Arkesteijn)
2905 * bug fix: defaulting of the value for the last of an atypically
2906 large number of multiple values being bound was not being
2907 performed correctly on the Alpha or PPC platforms
2908 * optimization: implemented multiplication as a modular
2909 (UNSIGNED-BYTE 32) operation on the x86 backend.
2910 * optimization: SEARCH on simple-base-strings can now be open-coded.
2911 (see also contrib/compiler-extras.lisp for inspiration for
2912 teaching the compiler about the Boyer-Moore algorithm).
2913 * value, returned by MAX (and MIN) called with several EQUALP, but
2914 not EQL, arguments now does not depend on compiler settings.
2915 * fixed some bugs revealed by Paul Dietz' test suite:
2916 ** in stack analysis liveness information is propagated from
2917 non-local entry points.
2918 ** pathwise CAST removing failed when the CAST node did not start
2920 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2921 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2923 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2924 host is already defined.
2925 ** RENAME-FILE works on streams instead of signalling an internal
2927 ** PEEK-CHAR uses the current readtable when determining whether
2928 or not a character is whitespace.
2929 ** MERGE-PATHNAMES handles the case when the pathname does not
2930 specify a name while the default-pathname specifies a version.
2931 ** Pathnames now stand a better chance of respecting print/read
2933 ** Attempting to use standardized file system operators with a
2934 pathname with invalid :DIRECTORY components signals a
2936 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2938 ** DIRECTORY on logical pathnames is more correct.
2939 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2940 signal a TYPE-ERROR if their argument is not a stream.
2941 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2942 designator argument does not designate a stream.
2943 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2944 examining the synonym.
2945 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2947 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2948 element-type larger than ([UN]SIGNED-BYTE 32).
2950 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2951 * When built with the :SB-FUTEX feature, threaded builds now take
2952 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2953 for faster/more reliable mutex and condition variable support.
2954 * Incompatible change (but one you probably shouldn't have been using
2955 anyway): the interface and code for arbitrating between multiple
2956 threads in the same user session has been redesigned.
2957 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2958 error when called without an explicit environment argument.
2959 (thanks to Nikodemus Siivola)
2960 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2961 confused about their position. (thanks to Adam Warner and Gerd
2963 * bug fix: Pretty printing backquoted forms with unquotations in the
2964 argument list position of various code constructs such as LAMBDA
2965 now works correctly. (reported by Paul Dietz)
2966 * bug fix: Pretty printing unquotations no longer loses all
2967 stream position information.
2968 * optimization: performance of string output streams is now less
2969 poor for multiple small sequence writes.
2970 * optimization: performance of CSUBTYPEP in the presence of complex
2971 expressions involving CONS and NOT many times has been improved.
2972 (reported by Paul Dietz)
2973 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2975 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2976 streams for the REPL, for the debugger, and so on. (thanks to
2978 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2979 * fixed some bugs revealed by Paul Dietz' test suite:
2980 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2981 is ignored if it is too small, rather than propagating through
2982 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2983 ** extremely complex negations of CONS types were not being
2984 sufficiently canonicalized, leading to inconsistencies in
2986 ** VALUES tranformer lost derived type.
2988 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2989 * fixed a bootstrapping bug: the build process no longer assumes
2990 that the various BOOLE-related constants have the same value in
2991 host and target lisps. (noted by Paul Dietz' test suite on an
2992 SBCL binary built from CLISP)
2993 * The system can now be dynamically linked on the MIPS platform,
2994 which enables dynamic loading of foreign code from Lisp. (thanks
2995 to Ralf Baechle for discussions on the MIPS ABI)
2996 * The system now records debugging information for its own source
2997 files in a filesystem-position-independent manner, relative to
2998 the "SYS" logical host.
2999 * fixed a compiler bug: MV-LET convertion did not check references
3000 to the "max args" entry point. (reported by Brian Downing)
3001 * tweaked disassembly notes to be less confident about proclaiming
3002 some instruction as an LRA. (thanks to Brian Downing)
3003 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3004 now each have their own history, command character, and other
3005 characteristics. (thanks to David Lichteblau)
3006 * fixed some bugs revealed by Paul Dietz' test suite:
3007 ** compiler failure in compiling LOGAND expressions including a
3009 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3010 shift greater than 32.
3011 ** FLUSH-DEST did not mark blocks for type check regeneration.
3012 ** HANDLER-CASE failed to accept declarations in handler clauses
3013 in some circumstances.
3015 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3016 * New code in contrib/sb-introspect (still probably not entirely
3017 stable yet) provides some support for smart Lisp development
3018 environments like SLIME.
3019 * The conditions signalled for errors occurring when loading .fasl
3020 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3021 in a way which should help ASDF recover gracefully.
3022 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3023 stuff has been cleaned up. If you code contrib/ stuff, this might
3024 affect you, and you can look at contrib/README, contrib/STANDARDS,
3025 and/or the 0.8.4.27 diff to check.
3026 * In full calls the compiler now does not generate checks for declared
3027 argument types for all arguments.
3028 * various threading fixes
3029 ** and some experimental patches which didn't make it into
3030 the main tree for this release, but which are shipped in
3031 contrib/experimental-thread.patch as a possible fix for some
3032 failures (deadlock, spinning...) in GC-intensive multithreaded
3034 * fixed PPC build problem (source code incompatibility of different
3035 library versions): added offsetof() hackery which attempts to divine
3036 where glibc maintainers put uc_mcontext today
3037 * fixed bug 282: compiler does not trust type assertions while passing
3038 arguments to a full call.
3039 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3040 &OPTIONAL VALUES type parameter.
3041 * fix bug 214: algorithm for noting rejected templates is now more
3042 similar to that of template seletion. (also reported by rydis on
3044 * fixed bug 141b: printing backquoted information readably and prettily
3045 inserts a space where necessary.
3046 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3047 (CHARACTER 10) are now reported as errors, rather than propagated
3048 as unknown types. (reported by piso on #lisp)
3049 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3050 with values NIL and :ERROR. (thanks to Milan Zamazal)
3051 * fixed bug 191c: CLOS now does proper keyword argument checking as
3052 described in CLHS 7.6.5 and 7.6.5.1.
3053 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3054 longer raise an error; further, using a list as a for-as-arithmetic
3055 counter now raises a meaningful error.
3056 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3057 now understood by sequence creation functions such as MAKE-SEQUENCE
3059 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3060 a STRING-INPUT-STREAM.
3061 * compiler enhancement: SIGNUM is now better able to derive the type
3063 * type declarations inside WITH-SLOTS are checked. (reported by
3065 * fixed some bugs revealed by Paul Dietz' test suite:
3066 ** incorrect optimization of TRUNCATE for a positive first
3067 argument and negative second.
3068 ** compiler failure in let-convertion during flushing dead code.
3069 ** compiler failure while deriving type of TRUNCATE on an
3070 interval, containing 0.
3071 ** ASH of a negative bignum by a negative bignum count now returns
3073 ** intersection of CONS types now canonicalizes properly, fixing
3074 inconsistencies in SUBTYPEP.
3076 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3077 * incompatible change: The --disable-debugger command line
3078 option now clobbers the debugger at a more fundamental
3079 level, by redefining #'INVOKE-DEBUGGER instead of by
3080 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3081 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3082 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3083 enter the debugger REPL and then suffer recursive errors
3084 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3085 while under the new system, BREAK in --disable-debugger mode
3086 terminates the system just as an unhandled error would.
3087 * fixed compiler performance when processing loops with a step >1;
3088 * bug fix: DOCUMENTATION now retrieves generic function
3089 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3090 support has been systematized, and now supports the methods
3091 specified by ANSI, along with a default method and a method for
3092 slot documentation. (reported by Nathan Froyd)
3093 * bug fix: effective methods associated with a generic function are
3094 no longer cached over a change of that generic function's method
3095 combination. (reported by Andreas Fuchs)
3096 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3097 names a non-existent directory. (thanks to Andreas Fuchs)
3098 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3099 the PPC platform, lead to stack corruption; this has been fixed.
3100 (reported by Rainer Joswig)
3101 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3102 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3103 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3104 arithmetic in general, is now much more reliable on the PPC
3106 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3107 platform now returns the right answer.
3108 * optimization: restored some effective method precomputation in
3109 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3110 precomputation is now tunable.
3111 * optimization: compiler-internal data structure use has been
3112 reviewed, and changes have been made that should improve the
3113 performance of the compiler by about 20%.
3114 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3115 simple-base-strings and simple-bit-vectors is improved.
3116 * optimization: the optimization of 32-bit logical and arithmetic
3117 functions introduced in version 0.8.3 on the x86 has been
3118 implemented on the mips, ppc and sparc platforms; an
3119 implementation of the same facility, but for 64-bit arithmetic,
3120 has been added for the alpha.
3121 * microoptimization: the compiler is better able to make use of the
3122 x86 LEA instruction for multiplication by constants.
3123 * bug fix: in some situations compiler did not report usage of
3124 generic arithmetic in (SPEED 3) policy.
3125 * bug 145b fix: compiler used wrong type specifier while converting
3126 MEMBER-types to numeric.
3127 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3129 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3130 index argument now works properly on the Alpha platform.
3131 * bug fix: floating point exception treatment on the Alpha platform
3133 * bug fix: FILE-POSITION works much better on string input and
3134 output streams. (thanks to Nikodemus Siivola)
3135 * bug fix: many threading/garbage collection symptoms sorted.
3136 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3137 might be pseudo-atomic.
3138 * internal change: Stopping for GC is now done with signals not
3139 ptrace. GC is now done in whichever thread wanted it, instead of
3141 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3143 * bug fix: result form in DO is not contained in the implicit
3145 * incompatible change: ICR structure is changed; the value part of
3146 CONTINUATION is now called LVAR; corresponding functions are
3147 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3148 * added type deriver for ISQRT (thanks to Robert E. Brown).
3149 * bug fix: better support for loading from the command line when an
3150 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3152 * fixed some bugs revealed by Paul Dietz' test suite:
3153 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3154 ** ROUND and FROUND now give the right answer when given very
3155 small float arguments.
3156 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3158 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3159 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3160 ** LCM should return a non-negative integer.
3161 ** PARSE-INTEGER returned the index of a terminator instead of the
3162 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3163 ** PARSE-INTEGER returned an incorrect index being applied to a
3165 ** LCM with two arguments of 0 returns 0 rather than signalling
3167 ** unsigned addition of a 32-bit constant with the high bit set no
3168 longer causes an internal compiler error on the x86.
3169 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3170 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3171 with negative last argument.
3172 ** byte specifiers with zero size and position no longer cause
3173 an error during type derivation.
3174 ** bignum multiplication on the Alpha platform now returns the
3176 * porting: The system now builds on SuSE AMD64, although it still
3177 generates a 32-bit binary.
3178 * .fasl file incompatibility: The fasl file version number has
3179 been incremented (because of the changes to internal compiler
3180 data structures referred to above).
3182 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3183 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3184 more accurately, on the Darwin kernel running on PowerPC hardware.
3185 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3186 * Compiler code deletion notes now signal a condition of type
3187 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3188 an associated MUFFLE-WARNING restart.
3189 * The compiler now performs limited argument count validation of
3190 constant format strings in FORMAT, and where appropriate in ERROR,
3191 CERROR and WARN. (thanks to Gerd Moellmann)
3192 * New ASDF-INSTALL contrib can be used for automatic download and
3193 installation of third-party Lisp code from CCLAN or other sites
3195 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3196 which forces another thread to execute a function supplied by the
3198 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3199 now accept and act upon their :ELEMENT-TYPE keyword argument.
3200 (reported by Martin Atzmueller, Edi Weitz)
3201 * bug fix: FILE-POSITION now accepts position designators up to
3202 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3203 is the greater. (thanks to Patrik Nordebo)
3204 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3205 Kalle Olavi Niemitalo)
3206 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3207 printable. (reported by Eric Marsden)
3208 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3209 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3210 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3211 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3212 (thanks to Stig Sandoe)
3213 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3214 UNREAD-CHAR now correctly includes the unread character in the
3215 target sequence. (thanks to Gerd Moellmann)
3216 * bug fix in threaded builds: the system can now be suspended and
3217 resumed by shell job control with minimal disruption.
3218 * bug fixes in times and timezones >2038AD
3219 * better handling of "where is GNU make?" problem in build scripts
3220 (thanks to Nikodemus Siivola)
3221 * new optimization: inside a named function any reference to a
3222 function with the same name is considered to be a self-reference;
3223 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3224 optimization quality.
3225 * new optimization on x86: logical functions and + now have
3226 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3227 used when the result is truncated to 32 bits.
3228 * VALUES declaration is partially enabled.
3229 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3230 * fixed some bugs revealed by Paul Dietz' test suite:
3231 ** The system now obeys the constraint imposed by
3232 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3233 types form a lattice under type intersection.
3234 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3235 ** ASSOC now ignores NIL elements in an alist.
3236 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3237 and (1+ MOST-POSITIVE-FIXNUM) answers.
3238 ** The addition of a method with invalid qualifiers to a generic
3239 function does not cause an error to be signalled immediately;
3240 a warning is signalled, and the error is generated only on
3241 calling the generic function.
3242 * changed .fasl file version number, in part to add type codes for
3243 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3244 obscure ANSI requirements
3246 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3247 * fixed bug 148: failure to inline-expand a local function left
3248 garbage, confusing the compiler.
3249 * fixed bugs 3cd: structure slot readers perform type check if the
3250 slot can have an invalid value (i.e. it is either not initialized
3251 or can be written with a less specific slot writer).
3252 * bug fix: the compiler now traps array references to elements off
3253 the end of an array; previously, the bounds checking in some
3254 circumstances could go off-by-one.
3255 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3257 * type declarations for array element types now obey the description
3258 on the CLHS page "Declaration TYPE", as per discussions on
3259 sbcl-help around 2003-05-08. This means that a declaration
3260 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3261 declaration, all references to BAR will be asserted or assumed
3262 (with THE, so dependent on compiler policy) to involve objects of
3263 type FOO. Note that no such declaration is implied in
3264 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3265 * declared types of functions from the "Conditions"
3266 chapter. (reported by Paul Dietz)
3267 * bug fix: CERROR accepts a function as its first argument.
3268 * bug fix: NTH an NTHCDR accept a bignum as index
3269 arguments. (reported by Adam Warner)
3270 * optimization: character compare routines now optimize comparing
3271 against a constant character. (reported by Gilbert Baumann)
3272 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3273 argument now works properly on the MIPS platform.
3274 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3275 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3276 declared to have a functional type, does not cause an error
3278 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3279 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3280 * fixed bug: if last continuation of a deleted block has a
3281 destination, this destination should be deleted too. (reported by
3283 * fixed a bug in the bootstrap process: the host compiler's values
3284 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3285 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3286 test case from Patrik Nordebo)
3287 * improved the ability of the disassembler on the PPC platform to
3288 provide helpful disassembly notes.
3289 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3290 the class in more cases than previously.
3291 * bug fix: FILE-POSITION now understands :START and :END for
3292 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3293 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3294 8) data. (thanks to David Lichteblau)
3295 * bug fix: it is possible to add a method to a generic function
3296 without lambda list.
3297 * bug fix: reader failed to signal END-OF-FILE inside an
3298 object representation. (reported by Nikodemus Siivola)
3299 * fixed some bugs revealed by Paul Dietz' test suite:
3300 ** LAST and [N]BUTLAST should accept a bignum.
3301 ** condition slot accessors are methods.
3302 ** (VECTOR NIL) is a subtype of STRING.
3304 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3305 * minor incompatible change: some nonsensical specialized lambda
3306 lists (used in DEFMETHOD) which were previously ignored now signal
3308 * minor incompatible change: the system is now aware of the types of
3309 variables in the COMMON-LISP package, and will signal errors for
3310 most violations of these type constraints (where previously they
3311 were silently accepted).
3312 * minor incompatible change: COMPILE-FILE now uses the freedom
3313 afforded (ANSI 3.2.2.3) to use derived function types for
3314 functions defined in the same file. This also permits the system
3315 to warn on static type mismatches and function
3316 redefinition. (Currently it does not work with high DEBUG level.)
3317 * minor incompatible change: VALUES declaration is disabled.
3318 * When issuing notes, the compiler now signals a condition of type
3319 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3320 restart for use in user handlers. It is expected that the
3321 COMPILER-NOTE condition will eventually become a condition
3322 supertype to a hierarchy of note types, which will then be
3323 handleable in a similar fashion. However, at the moment, no such
3324 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3325 but it's an implementation detail, not a classification for the
3327 * Changes in type checking closed the following bugs:
3328 ** type checking of unused values (192b, 194d, 203);
3329 ** template selection based on unsafe type assertions (192c, 236);
3330 ** type checking in branches (194bc).
3331 * A short form of VALUES type specifier has ANSI meaning (it has
3332 increased the number of situations when SBCL cannot perform type
3334 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3335 keywords or constants is permissible.
3336 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3337 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3338 classes. (thanks to Antonio Martinez)
3339 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3340 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3341 argument to a pretty-print stream. Instead, it leaves any such
3342 operations to DESCRIBE-OBJECT methods.
3343 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3345 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3346 lambda lists. (thanks to David Lichteblau)
3347 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3348 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3349 (thanks to Gerd Moellmann)
3350 * fixed bug 246: increased compilation speed of long
3351 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3353 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3355 * DEFCONSTANT now throws a condition of type
3356 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3357 constant to a non-EQL value; CONTINUE and ABORT restarts
3358 respectively change and preserve the value.
3359 * fixed bug 63: The code walker, part of the implementation of CLOS,
3360 is now better at handling symbol macros.
3361 * bug fix: There is no longer an internal implementation type named
3362 CL:LENGTH. (reported by Raymond Toy)
3363 * bug fix: In macro-like defining macros/special operators the
3364 implicit block does not enclose the lambda list.
3365 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3366 enclosed in parentheses) are not suitable as type specifiers, and
3367 their use properly signals an error now.
3368 * bug fix: An argument count mismatch for a type specifier in code
3369 being compiled no longer causes an unhandled error at compile
3370 time, but signals a compile-time warning.
3371 * fixed simple vector readable printing
3372 * bug fix: DESCRIBE takes more care over whether the class
3373 precedence list slot of a class is bound before accessing it.
3374 (reported by Markus Krummenacker)
3375 * bug fix: FORMATTER can successfully compile pretty-printer format
3376 strings which use variants of the ~* directive inside.
3377 * bug fix: SEARCH now applies its TEST predicate to the elements of
3378 the arguments in the correct order. (thanks to Wolfhard Buss)
3379 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3380 in type inference. (thanks to Robert E. Brown)
3381 * bug fix: Reading in symbols with an explicit package name of ""
3382 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3383 * fixed some bugs revealed by Paul Dietz' test suite:
3384 ** NIL is now allowed as a structure slot name.
3385 ** Arbitrary numbers, not just REALs, are allowed in certain
3386 circumstances in LOOP for-as-arithmetic clauses.
3387 ** Multiple class redefinitions before slot access no longer
3388 causes a type error.
3389 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3390 association between the name and a class.
3391 ** Generic functions with non-standard method-combination and over
3392 five methods all of which return constants no longer return NIL
3393 after the first few invocations. (thanks to Gerd Moellmann)
3394 ** CALL-NEXT-METHOD with no arguments now passes the original
3395 values of the arguments, even in the presence of assignment.
3396 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3398 ** DISASSEMBLE works with closures and funcallable instances.
3399 ** ADD-METHOD now returns the generic function, not the new method.
3400 ** FIND-METHOD signals an error if the lengths of the specializers
3401 is incompatible with the generic function, even if the ERRORP
3403 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3404 which its argument is a member.
3405 ** DEFCLASS only redefines the class named by its class-name
3406 argument if that name is the proper name of the class;
3407 otherwise, it creates a new class.
3408 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3409 of the UNBOUND-SLOT condition to the name of the slot.
3410 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3411 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3412 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3413 SLOT-MAKUNBOUND in the specified fashion.
3415 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3416 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3417 cross-compilation host. As a consequence, we can now bootstrap our
3418 way up to SBCL starting with a bare gcc toolchain and human-readable
3419 source code (first the source to CLISP, then the source to SBCL).
3420 * A contributed module containing a partial implementation of the
3421 simple-streams interface has been included. (thanks to Rudi
3423 * A contributed module implementing the RFC1321 Message Digest
3424 Algorithm, known as MD5, has been included.
3425 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3426 no longer has any effect, as the code controlled by this feature
3427 has been deleted. (As far as we know, no-one has ever built using
3428 this feature, and its semantics were confused in any case).
3429 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3430 work on conditions (as required by the ANSI specification),
3431 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3432 expected behaviour on conditions. Users should note, however,
3433 that such behaviour is not required by the ANSI specification,
3434 and so use of this behaviour may render their code unportable.
3435 * fixed some bugs revealed by Paul Dietz' test suite:
3436 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3438 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3439 ** SXHASH on condition objects no longer returns NIL.
3440 ** :ALLOCATION :CLASS slots are better treated; their values are
3441 updated on class redefinition, and initforms inherited from
3442 superclasses are applied.
3443 ** REMOVE-METHOD returns its generic function argument even when
3444 no method was removed.
3445 ** SHARED-INITIALIZE now initializes the values of the requested
3446 slots, including those with :ALLOCATION :CLASS.
3447 ** ALLOCATE-INSTANCE now works on structure classes defined via
3448 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3450 ** SLOT-EXISTS-P now works on conditions, as well as structures
3452 ** MAKE-LOAD-FORM now has the required methods on
3453 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3454 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3455 keyword, and now implements the SLOT-NAMES argument.
3456 ** methods with &OPTIONAL arguments no longer allow too many
3457 arguments to be passed in the call without error.
3458 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3459 option is consistent with the required arguments of the generic
3460 function lambda list.
3461 * bug fix: REQUIRE accepts a string designator. (Thanks to
3463 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3464 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3465 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3466 * bug fix: The compiler now checks for duplicated variables in macro
3468 * bug fix: SETQ on globals returns the correct value.
3469 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3470 not a COMPILER-ERROR (followed by some other strange error on
3471 choosing the CONTINUE restart).
3472 * bug fix: make.sh and friends are now more consistent in the way that
3473 they look for GNU "make".
3475 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3476 * experimental native threads support (on x86 Linux >=2.4 only).
3477 This is not compiled in by default: you need to add :SB-THREAD to
3478 the target features. See the "Beyond ANSI" chapter of the manual
3480 * fix for longstanding nonANSIism: The old distinction between
3481 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3482 The return value from CL:FIND-CLASS is now a CLOS class, and
3483 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3484 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3485 * An interface to the MetaObject Protocol, as described in Kiczales,
3486 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3487 MIT Press, 1991, is available from the SB-MOP package.
3488 * incompatible change: the SB-PCL package should now be considered
3489 a private implementation detail, and no longer a semi-private MOP
3491 * minor incompatible change: due to rearrangement for threads, the
3492 control stack and binding stack are now allocated at arbitrary
3493 addresses instead of being hardcoded per-port. Users affected by
3494 this probably have to be doing advanced things with shared
3495 libraries, and will know who they are.
3496 * minor incompatible change: Previously, all --eval forms used were
3497 processed with READ before any of them were processed with EVAL.
3498 Now each --eval form is processed with both READ and EVAL before
3499 the next --eval form is processed. (Thus package operations like
3500 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3501 work as the user might reasonably expect.)
3502 * minor incompatible change: *STANDARD-INPUT* is now only an
3503 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3505 * minor incompatible change: Y-OR-N-P is now character-oriented,
3506 not line oriented. Also, YES-OR-NO-P now works without errors.
3507 (thanks to Antonio Martinez)
3508 * sb-aclrepl module improvements: an integrated inspector, added
3509 repl features, and a bug fix to :trace command.
3510 * Known functions, which cannot be open coded by the backend, are
3511 considered to be able to check types of their arguments. (fixing
3512 a bug report by Nathan J. Froyd)
3513 * fixed a bug in computing method discriminating functions: It is
3514 now possible to define methods specialized on classes which have
3515 forward-referenced superclasses. (thanks to Gerd Moellmann)
3516 * fixed evaluation order in optional entries (reported by Gilbert
3518 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3519 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3520 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3521 required-by-AMOP NAME argument, as well as CLASS and
3522 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3523 * fixed bug 20: DEFMETHOD can define methods using names that are
3524 not the proper names of classes to designate class specializers.
3525 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3526 Unix file descriptors, instead of blowing up. (thanks to Antonio
3528 * Garbage collection refactoring: user-visible change is that a
3529 call to the GC function during WITHOUT-GCING will not do garbage
3530 collection until the end of the WITHOUT-GCING. If you were doing
3531 this you were probably losing anyway.
3532 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3533 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3534 TYPEP the latter but not the former.
3535 * The compiler issues a full WARNING for calls to undefined functions
3536 with names from the CL package.
3537 * MAP-INTO for a vector destination is open coded. (reported by
3538 Brian Downing on c.l.l)
3539 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3540 documentation string.
3541 * fixed some bugs revealed by Paul Dietz' test suite:
3542 ** COPY-ALIST now signals an error if its argument is a dotted
3544 ** Condition slots are now accessed more correctly in the presence
3545 of multiple initargs for a given slot.
3546 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3547 exclude restarts of the same name associated with a different
3549 ** DEFCLASS of forward-referenced classes with another
3550 forward-referenced class in the superclasses list no longer
3552 ** Condition slots are now initialized once each, not multiple
3553 times. (thanks to Gerd Moellmann)
3554 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3556 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3557 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3558 arguments contain duplicated elements.
3559 ** RESTART-CASE understands local macros.
3560 ** RESTART-CASE associates exactly its own restarts with a condition.
3561 ** ENDP in safe mode checks its argument to be of type LIST.
3562 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3563 in question is unbound.
3564 ** Optimized MAKE-INSTANCE functions no longer cause internal
3565 assertion failures in the presence of duplicate initargs.
3566 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3567 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3568 propagated even in the ctor optimized implementation of
3570 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3572 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3573 * a better implementation of SXHASH on (simple) bit vectors,
3574 measured both in execution speed and in distribution of results
3575 over the positive fixnums, has been installed. Likewise, a better
3576 implementation of EQUAL for simple bit vectors is now available.
3577 * fixed CEILING optimization for a divisor of form 2^k.
3578 * fixed bug 240 (emitting extra style warnings "using the lexical
3579 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3580 by Antonio Martinez)
3581 * fixed SXHASH, giving different results for NIL depending on type
3582 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3583 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3584 variable. (found by Rolf Wester)
3585 * SBCL does not ignore type declarations for special
3586 variables. (reported by rif on c.l.l 2003-03-05)
3587 * some bug fixes in contrib/sb-aclrepl/
3588 * fixed some bugs revealed by Paul Dietz' test suite:
3589 ** a bug in the CONS type specifier, whereby the CAR and CDR
3590 types got intertwined, has been fixed;
3591 ** the type system is now able to reason about the interaction
3592 between INTEGER and RATIO types more completely;
3593 ** APPEND, [N]REVERSE and NRECONC check that those their
3594 arguments, which must be proper lists, are really so;
3595 ** An array specialized to be unable to hold elements has been
3596 implemented, as required -- yes, really -- by ANSI;
3597 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3598 on malformed property lists;
3600 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3601 * incompatible packaging change: in line with Unix convention,
3602 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3603 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3604 * REQUIRE and PROVIDE are now optionally capable of doing something
3605 useful. See the documentation string for REQUIRE.
3606 * infrastructure for a managed SBCL contrib system: contributed
3607 modules in this release include:
3608 ** the ASDF system definition facility;
3609 ** an interface to the BSD Sockets API;
3610 ** an ACL-like convenience interface to the repl;
3611 (thanks to Kevin Rosenberg)
3612 ** an implementation of ROTATE-BYTE, with efficient implementation
3614 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3615 gives a closer approximation to the right answer than previously.
3616 (thanks to Raymond Toy)
3617 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3618 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3619 optional environment arguments, as required by ANSI.
3620 * fixed bugs in other functions taking environment objects, allowing
3621 calls with an explicit NIL environment argument to be compiled
3623 * fixed bug 228: primary return values from
3624 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3625 COMPILE or FUNCTION.
3626 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3627 :TYPE will no longer signal errors on innocuous objects.
3628 * fixed bug 231b: SETQ is better at respecting type declarations in
3629 the lexical environment.
3630 * fixed a bug in DEFCLASS: classes named by symbols with no or
3631 unprintable packages can now be defined.
3632 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3633 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3634 * fixed compiler failure related to checking types of functions.
3635 (reported by Robert E. Brown)
3636 * the compiler is now much more consistent in its error-checking
3637 treatment of bounding index arguments to sequence functions: in
3638 (SAFETY 3) code, errors will be signalled in almost all cases if
3639 invalid sequence bounding indices are passed to functions defined
3640 by ANSI to operate on sequences.
3641 * fixed a bug in the build procedure: documentation of SBCL-specific
3642 packages is now preserved and available in the final Lisp image.
3643 * lifted FDEFINITION lookup out of loops in the implementation of
3644 many list operations. (thanks to Robert E. Brown)
3645 * fixed a bug in the reader: the #n# reader macro now works for
3646 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3647 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3648 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3649 E. Brown and Tony Martinez respectively)
3650 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3651 SLOT-BOUNDP: in particular, it is now able to optimize them much
3652 better, and is now not vulnerable to having packages renamed.
3653 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3654 always called when a slot is not present in an instance. (thanks
3656 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3657 longer signal an error on unreading a character following EOF on
3658 the previous constituent stream. (thanks to Tony Martinez)
3659 * fixed some bugs revealed by Paul Dietz' test suite:
3660 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3661 not just nonnegative fixnums;
3662 ** the logical bit-array operators such as BIT-AND now accept an
3663 explicit NIL for their "opt-arg" argument (to indicate a
3664 freshly-consed result bit-array);
3665 ** ELT now signals an error on an invalid sequence index in safe
3667 ** the type system is now cleverer about negations of numeric
3668 types, and consequently understands the BIGNUM and RATIO types
3670 ** the type system is now cleverer about the interaction between
3671 INTEGER and RATIO types: while bugs still remain, many more
3672 cases are accurately computed;
3673 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3674 if it is in the last clause;
3675 ** CONSTANTLY now correctly returns a side-effect-free function in
3677 ** DECLARE is no longer treated as a special-operator; in
3678 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3679 * incremented fasl file version number due to the change in the
3680 DEFSTRUCT-SLOT-DESCRIPTION structure.
3682 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3683 * minor incompatible change: code processed by the "interpreter" or
3684 EVAL now has a compilation optimization policy of (DEBUG 2)
3685 (changed from (DEBUG 1)) to improve debuggability of interactive
3686 development, and to allow the use of the debug RETURN command in
3688 * an experimental implementation of the RETURN command for the
3689 debugger has been included. (thanks to Frederik Kuivinen)
3690 * fixed bug 62: constraints were not propagated into a loop.
3691 * fixed bug in embedded calls of SORT (reported and investigated by
3693 * fixed some bugs revealed by Paul Dietz' test suite:
3694 ** printing and reading of arrays with some dimensions having
3695 length 0 (thanks to Gerd Moellmann);
3696 ** BOA constructor with &AUX argument without a default value does
3697 not cause a type error;
3698 ** CONSTANTP now returns true for all self-evaluating objects.
3700 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3701 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3702 accessors that are related by inheritance, as specified in the
3703 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3704 Valtteri Vuorikoski)
3705 * The compiler is now able to inline functions that were defined in
3706 a complex lexical environment (e.g. inside a MACROLET).
3707 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3709 * Support for the upcoming FreeBSD-5.0 release has been included.
3710 (thanks to Dag-Erling Smorgrav)
3711 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3712 effect when it is not in a toplevel context.
3713 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3714 stand a better chance of being correct. (thanks to Gerd
3716 * fixed bug in COERCE, which now signals an error on coercing a
3717 rational to a bounded real type which excludes the expected
3719 * The compiler is now able to derive types more accurately from the
3720 COERCE and COMPILE functions.
3721 * fixed bug 223: functional binding is considered to be constant
3722 only for symbols in the CL package.
3723 * fixed bug 231: SETQ did not check the type of a variable being set
3724 (reported by Robert E. Brown)
3725 * A new optimization for MAKE-INSTANCE has been included, fixing
3726 various bugs (including relating to :ALLOCATION :CLASS slots and
3727 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3729 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3730 ** As required by ANSI, LOOP now disallows anonymous collection
3731 clauses such as COLLECT I in conjunction with aggregate boolean
3732 clauses such as THEREIS (= I 1);
3733 ** LOOP now signals an error when any variable is reused in the
3734 same loop (including the potentially useful construct analogous
3735 to WITH A = 1 WITH A = (1+ A);
3736 ** IT is only a special loop symbol within the first clause of a
3737 conditional loop clause;
3738 ** LOOP with a typed iteration variable over a hashtable now
3739 signals a type error iff it should.
3740 * fixed some other bugs revealed by Paul Dietz' test suite:
3741 ** FILE-STREAM now names the class previously known as FD-STREAM;
3742 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3743 argument) no longer signals an error;
3744 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3745 of the slot symbol, rather than using the current package
3746 ((:CONC-NAME "") continues to intern the slot's name in the
3748 * incremented fasl file version number, because of the incompatible
3749 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3750 of the new implementation of DEFINE-COMPILER-MACRO.
3752 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3753 * Support for building SBCL for MIPS platforms running in
3754 little-endian mode has now been checked in, and basic
3755 functionality on said platforms verified.
3756 * minor incompatible change: PCL now records the pathname of a file
3757 in which methods and the like are defined, rather than its
3759 * minor incompatible change: TRUENAME now considers the truename of
3760 a file naming a directory to be the pathname with :DIRECTORY
3761 component indicating that directory.
3762 * minor incompatible change: a NAMED clause in the extended form of
3763 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3764 reason for the previous behaviour is unclear.
3765 * more systematization and improvement of CLOS and MOP conformance
3766 in PCL (thanks to Gerd Moellman and Pierre Mai):
3767 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3769 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3770 primary methods with no specializers;
3771 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3773 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3774 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3775 FORWARD-REFERENCED-CLASSes; error reporting on
3776 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3778 ** SXHASH on CLOS instances now uses a slot internal to the
3779 instance to return different numbers on distinct instances,
3780 while preserving the same return value through invocations of
3782 ** DEFMETHOD signals errors when methods with longer incongruent
3783 lambda lists are added to generic functions;
3784 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3785 CLASS, as specified in AMOP;
3786 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3787 on the order returned by the primary method for classes of
3788 class STANDARD-CLASS;
3789 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3790 * fixed some bugs shown by Paul Dietz' test suite:
3791 ** DOLIST puts its body in TAGBODY;
3792 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3794 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3795 value producing form;
3796 ** if more variables are given to PROGV than values, extra
3797 variables are bound and made to have no value;
3798 ** NSUBSTITUTE on list arguments gets the right answer with
3800 ** ELT signals an error of type TYPE-ERROR when the index argument
3801 is not a valid sequence index;
3802 ** LOOP signals (at macroexpansion time) an error of type
3803 PROGRAM-ERROR when duplicate variable names are found;
3804 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3805 ** FUNCALL of special-operators now cause an error of type
3807 ** PSETQ now works as required in the presence of side-effecting
3808 symbol-macro places;
3809 ** NCONC accepts any object as its last argument;
3810 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3812 ** loop-for-as-package does not require a package to be explicitely
3814 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3816 * fixed bug 166: compiler preserves "there is a way to go"
3817 invariant when deleting code.
3818 * fixed bug 172: macro lambda lists with required arguments after
3819 &REST arguments now cause an error to be signalled. (thanks to
3821 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3822 bug. (thanks to Matthew Danish)
3823 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3825 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3826 arguments are lexically rebound. (thanks to Gerd Moellmann and
3828 * fixed bug 194: error messages are now more informative when there
3829 is no primary method applicable in a call to a generic
3830 function. (thanks to Gerd Moellmann)
3831 * fixed bug in command line argument checking (thanks to Julian
3833 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3834 (thanks to Matthew Danish)
3835 * incremented fasl file version number, because of the
3836 SXHASH-related changes in the layout of CLOS data structures
3838 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3839 * minor incompatible change: The runtime (the Unix executable named
3840 "sbcl") is now much pickier about the .core files it will load.
3841 Essentially it now requires .core files to descend from the same
3842 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3843 as the runtime does. (The intent is to prevent the crashes which
3844 can occur, and which can even be reported as mysterious failures,
3845 when people patch the sources or change the build parameters
3846 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3847 sbcl and .core files.)
3848 * fixed bug: VALUES-LIST is no longer optimized away.
3849 * fixed bug 142: The FFI conversion of C string values to Lisp
3850 string values no longer conses excessively. (thanks to Nathan
3851 Froyd porting Raymond Toy's fix to CMU CL)
3852 * began to systematize and improve MOP conformance in PCL (thanks to
3853 Nathan Froyd, Gerd Moellman and Pierre Mai):
3854 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3856 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3857 ** FINALIZE-INHERITANCE is now called on class finalization;
3858 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3859 argument precedence order.
3860 * fixed bug 202: The compiler no longer fails on functions whose
3861 derived types contradict their declared type.
3862 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3863 so it can be non-toplevel.
3864 * The fasl file version number has changed (because of the new
3865 implementation of DEFMACRO).
3866 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3867 safe code, that any length requirement by their type-specifier
3868 argument is valid. The exceptions to this are described in bug
3870 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3871 functions now check the types of their inputs as required by ANSI.
3872 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3873 introduced symbol is DECLAREd to be SPECIAL.
3874 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3875 * fixed bug: :COUNT argument to sequence functions may be negative
3876 * fixed bug: body of DO-SYMBOLS may contain declarations
3877 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3878 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3879 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3880 symbol macro only once
3881 * fixed printing of call frame when argument list is unavailable
3882 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3883 * compiler no longer signals WARNING on unknown keyword
3886 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3887 * A beta-quality port to the mips architecture running Linux,
3888 based on the old CMUCL backend, has been made. It has been tested
3889 on a big-endian kernel, and works sufficiently well to be able to
3890 rebuild itself; it has not been tested in little-endian mode.
3891 * fixed an inconsistency between gencgc.c and purify.c which made
3892 dumping/loading .core files unreliable
3893 * fixed bug 120a: The compiler now deals correctly with IFs where
3894 the consequent is the same as the alternative, instead of
3895 misderiving the return type. (thanks to Alexey Dejneka)
3896 * fixed bug 113: Logical pathnames are now dumpable (the logical
3897 host is resolved at load-time, throwing an error if it is not
3899 * fixed bug 174: FORMAT's error message is slightly clearer when a
3900 non-printing character is used in a format directive.
3901 * fixed several bugs in compiler checking of type declarations, i.e.
3902 violations of the Python "declarations are assertions" principle
3903 (thanks to Alexey Dejneka)
3904 * fixed several bugs in PCL's error checking (thanks to Gerd
3906 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3908 * fixed bug in compilation of functions as first class values
3909 (thanks to Antonio Martinez-Shotton)
3910 * The compiler's handling TYPE-ERRORs which it can prove will
3911 inevitably happen at runtime has been cleaned up and corrected
3912 in several ways. (thanks to Alexey Dejneka)
3913 * improved argument type checking for various basic arithmetic
3914 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3915 lavished on them in the past that they can be compiled in many
3916 ways in different special cases
3917 * fixed bug 181: compiler checks validity of user supplied type
3919 * cleaned up code flushing in optimization: Function calls which
3920 should signal errors for safety purposes (e.g. which ANSI says
3921 should signal errors when their arguments are of incorrect type)
3922 are no longer optimized away.
3923 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3924 * incremented fasl file version number, because changes in the
3925 implementation of sequence functions like COERCE caused
3926 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3927 in old inline expansions) to become undefined. (Actually these
3928 changes were later undone, so we might very well be binary
3929 compatible with 0.7.7 after all, but leaving the version number
3930 incremented seemed like the simplest and most conservative
3933 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3934 * An alpha-quality port to the parisc architecture running Linux,
3935 based on the old CMUCL backend, has been made. This, even more so
3936 than the other backends, should be considered still a work in
3937 progress; known problems include that the Linux kernel in 64-bit
3938 mode does not propagate the correct sigcontext structure to
3939 userspace, and consequently SBCL on a parisc64 kernel will not
3941 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3942 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3943 suppressed.) Also now that the compiler is looking at declarations
3944 in the environment, it checks optimization declarations as well,
3945 and suppresses inlining when (> DEBUG SPEED).
3946 * More fixes have been made to treatment of floating point exception
3947 treatment and other Unix signals. In particular, floating point
3948 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3949 * The detection and handling of control stack exhaustion (infinite
3950 or very deeply nested recursion) has changed. Stack exhaustion
3951 detection is now done by write-protecting pages at the OS level
3952 and applies at all optimization settings; when found, a
3953 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3954 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3955 be caught using IGNORE-ERRORS.
3956 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3957 correctly when transforming recursive LABELS functions to LETs.
3958 (thanks to Alexey Dejneka)
3959 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3960 that are names of constants or global variables.
3961 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3962 alien routines with docstrings.
3963 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3964 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3966 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3967 (thanks to Eric Marsden)
3968 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3969 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3970 * Bug fix: The SPARC backend can now compile functions involving
3971 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3972 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3973 to a functions expecting a PATHNAME-DESIGNATOR.
3974 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3975 lambda lists. (thanks to Alexey Dejneka)
3976 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3977 functions so that EXPORTing the name of the class doesn't cause
3978 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3979 to Antonio Martinez for reporting this)
3980 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3981 constant-folded without failing an assertion. (thanks to Einar
3982 Floystad Dorum for reporting this)
3983 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3984 types are now dealt with more correctly by the compiler.
3985 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3986 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3987 behaviour analogous to RENAME-FILE. This puts its behaviour more
3988 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3990 * The fasl file version number has changed again. (because of the
3991 bug fix involving the names of PCL MAKE-INSTANCE functions)
3993 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3994 * bug fix: Floating point exceptions are treated much more
3995 consistently on the x86/Linux and PPC/Linux platforms.
3996 * Array initialization with :INITIAL-ELEMENT is now much faster for
3997 cases when the compiler cannot open code the array creation, but
3998 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3999 array accesses have also seen a speed increase.
4000 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4001 specified. (This was at the root of some bad interactions between
4002 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4004 * bug fix: Internal error arguments for undefined functions are now
4005 computed correctly on the PPC/Linux platform.
4006 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4007 Raymond Toy's patch for CMU CL)
4008 * Support for the Solaris 9 operating environment has been included
4009 (thanks to Daniel Merritt)
4010 * A very ugly but hopefully complete draft of the missing FFI chapter
4011 of the manual has been created by reformatting the corresponding
4012 CMU CL manual chapter into (currently very ugly and incoherent)
4013 DocBook and bringing it up to date for SBCL behavior. Thus, the
4014 manual is now essentially complete, at least by my extreme
4015 once-and-only-once standards, whereby it's acceptable to refer to
4016 the doc strings of SB-EXT functions as the primary documentation.
4017 * The fasl file version number has changed again, due to cleanup of
4018 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4019 is no longer a static symbol.)
4021 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4022 * SBCL now builds with OpenMCL (version 0.12) as the
4023 cross-compilation host; also, more progress has been made toward
4024 bootstrapping under CLISP.
4025 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4027 * bug 158 fixed: The compiler can now deal with integer loop
4028 increments different from 1; fixing this turned out also to fix
4030 * bug 169 fixed: no more bogus warnings about using lexical bindings
4031 despite the presence of perfectly good SPECIAL declarations (thanks
4032 to David Lichteblau)
4033 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4034 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4035 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4037 * bug 180 fixed: Method combination specifications no longer ignore
4038 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4039 * bug fix: Structure type predicate functions now check their argument
4040 count as they should.
4041 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4042 correctly. (thanks to Pierre Mai)
4043 * minor incompatible change: The --noprogrammer option is deprecated
4044 in favor of the new --disable-debugger option, which is very similar.
4045 (The major difference is that it takes effect at a slightly different
4046 time at startup, causing handling of errors in --sysinit and
4047 --userinit files will be affected differently.) The
4048 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4049 been added to allow this functionality to be controlled from ordinary
4050 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4051 maintainers, who might want to run non-interactive scripts to
4052 build SBCL cores which will later be used interactively.)
4053 * minor incompatible change: The LOAD function no longer, when given
4054 a wild pathname to load, loads all files matching that pathname.
4055 Instead, an error of type FILE-ERROR is signalled.
4057 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4058 * bug 147 fixed: The compiler preserves its block link/count
4059 invariants more correctly now so that it doesn't crash. (thanks
4061 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4063 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4064 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4065 no-value-for-this-character as NIL (as specified by ANSI).
4066 * HOST-NAMESTRING on physical pathnames now returns a string that is
4067 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4068 (thanks to Christophe Rhodes)
4069 * The Alpha port handles icache flushing more correctly. (thanks to
4071 * More progress has been made toward bootstrapping under CLISP. (thanks
4072 to Christophe Rhodes)
4073 * The fasl file format has changed again, because dynamic loading
4074 on OpenBSD (which has non-ELF object files) motivated some cleanups
4075 in the way that foreign symbols are transformed and passed around.
4076 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4077 is no longer treated as whitespace by the reader, but instead as
4078 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4079 |A
\7fB|, instead of A as it used to.
4081 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4082 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4083 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4084 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4085 this as of 0.7.1.45, but was left out of the previous news section
4086 (thanks to Dan Barlow)
4087 * SBCL now runs on the Solaris operating system on SPARC architectures
4088 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4089 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4090 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4091 * SPARC backend cleanups, allowing builds of cores optimized for V8
4092 and V9 SPARCS, and also emission of code targeted to a particular
4093 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4095 * SBCL is closer to bootstrapping under CLISP, thanks to various
4096 fixes by Christophe Rhodes.
4097 * The fasl file format has changed again, to allow the compiler's
4098 INFO database to support symbol macros.
4099 * The user manual (in doc/) is formatted into HTML more nicely.
4100 (thanks to coreythomas)
4101 * The system is smarter about SUBTYPEP relationships, especially
4102 those involving NOT types (including types such as ATOM which are
4103 represented internally using NOT types). Thus SUBTYPEP is less
4104 likely to return (VALUES NIL NIL) in general, and in particular
4105 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4107 * The fasl file format has changed again, because the internal
4108 representation of types now includes a new slot to support the new
4109 SUBTYPEP-of-NOT-types logic.
4110 * (not a change in the main branch of SBCL, but a related prototype
4111 which can hopefully be merged into the main branch of SBCL in the
4112 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4113 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4114 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4115 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4116 dispatch macro character combinations. (thanks to Alexey Dejneka)
4117 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4118 that superficially look like logical namestrings correctly.
4119 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4121 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4122 default supplied-p) for &optional and &key arguments. (thanks to
4125 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4126 * incompatible change: The compiler is now less aggressive about
4127 tail call optimization, doing it only when (> SPACE DEBUG) or
4128 (> SPEED DEBUG). (This is an incompatible change because there are
4129 programs which relied on the old CMU-CL-style behavior to optimize
4130 away their unbounded recursion which will now die of stack overflow.)
4131 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4132 for non-GENCGC systems has been increased to 20M (since that
4133 seems much closer to the likely performance optimum for modern
4134 systems than the old 4M value was)
4135 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4136 and *DEBUG-PRINT-LEVEL*
4137 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4138 of CMU CL's support for SPARC, and various endianness and other
4139 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4140 * new syntactic sugar for the Unix command line: --load foo.bar is now
4141 an alternate notation for --eval '(load "foo.bar")'.
4143 ** The system now detects stack overflow and handles it gracefully,
4144 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4145 optimization settings. (This is a good thing in general, and
4146 its introduction in this version should be particularly timely
4147 for anyone whose code fails because of suppression of tail
4149 ** The system now hunts for the C variable "environ" in a more
4150 devious way, to avoid segfaults when the C library version differs
4151 between compile time and run time. (thanks to Christophe Rhodes)
4152 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4153 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4154 ** The compiler no longer issues bogus style warnings for undefined
4155 classes in the same source file as the DEFCLASSes which defined
4156 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4158 ** fixes in CONDITION class precedence list for undefined function
4159 errors (thanks to Alexei Dejneka)
4160 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4161 correctly. (thanks to Dan Barlow)
4162 ** portability fixes aiming at bootstrapping under CLISP (thanks
4163 to Dave McDonald and Christophe Rhodes)
4164 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4165 ** fixes in type translation and and type inference (thanks to
4167 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4168 ** various fixes in the new ports (thanks to Dan Barlow)
4169 * several changes related to debugging:
4170 ** suppression of tail recursion, as noted above
4171 ** stack overflow detection, as noted above
4172 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4173 is now the default. (For some time encapsulation has been more
4174 reliable than the breakpoint-based :ENCAPSULATE NIL
4175 implementation, at least on X86 systems; and I just noticed that
4176 encapsulation also seems closer to the spirit of the ANSI
4179 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4181 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4182 up properly again. (There was a packaging bug in 0.7.0 which
4183 left their definitions in SB-SYS::LOAD-FOREIGN and
4184 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4185 vital for most things which interface to C-level interfaces,
4186 like extensions working with sockets or databases or
4187 Perl-compatible regexes or whatever, and the need to fix
4188 this bug is the main reason that 0.7.1 was released so
4190 ** DEFGENERIC is now choosier about the methods it redefines, so that
4191 reLOADing a previously-LOADed file containing DEFGENERICs does
4192 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4193 cycle now works as it should. (thanks to Alexey Dejneka)
4194 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4195 fixed by Christophe Rhodes. (He actually submitted this patch
4196 months ago, and I delayed until after 0.7.0.)
4197 ** Bug 111 (internal compiler confusion about runtime checks on
4198 FUNCTION types) was fixed by Alexey Dejneka.
4199 * Some internal cleanups (getting rid of variables which aren't
4200 needed now that the byte interpreter is gone) caused the fasl
4201 file format number to change again.
4203 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4204 * major incompatible change: The default fasl file extension, i.e. the
4205 default extension for files produced by COMPILE-FILE, has changed
4206 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4208 ** There are many changes in the implementation of the compiler.
4209 SBCL is now essentially a compiler-only implementation of ANSI
4210 Common Lisp. EVAL still "interprets" a few special cases, but
4211 almost all the interesting cases are handled by creating
4212 a LAMBDA expression, calling COMPILE on it, then calling
4213 FUNCALL on the result.
4214 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4215 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4216 Since the code is newer, there might still be some new bugs
4217 (though not as many as before Martin Atzmueller's fixes:-). But
4218 the new code is substantially simpler and clearer, and hopefully
4219 any remaining bugs will be simpler, less fundamental, and more
4220 fixable then the bugs in the old code.
4221 ** The revised compiler is still a little unsteady on its feet.
4223 *** The debugging information it produces (particularly the names
4224 of FUNCTION objects) is sometimes much less useful than what
4225 the old compiler produced.
4226 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4227 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4228 within a MACROLET) has been temporarily weakened.
4229 ** There are new compiler optimizations for various functions:
4230 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4231 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4232 *** the math functions TRUNCATE, FLOOR, and CEILING
4233 *** the function-of-all-trades COERCE
4234 Mostly these should be transparent, but there's one
4235 potentially-annoying problem (bug 117): when the compiler
4236 inline-expands a function and does type analysis on the result,
4237 it can create control paths which have type mismatches, and
4238 when it can't prove that those control paths aren't taken,
4239 it will issue WARNINGs about the type mismatches. This is
4240 a particular problem in practice for the new sequence functions.
4241 It's not clear how this should be fixed, and for now, a
4242 workaround is given in the entry for 117 in the BUGS file.
4243 ** (Because of the interaction between the two previous items --
4244 occasional inlining problems and new inline expansions -- some
4245 of the new sequence function optimizations won't really kick in
4246 completely until debugging information, and then inlining, are
4247 straightened out in some future version.)
4248 * minor incompatible changes:
4249 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4250 DIRECTORY no longer implicitly promotes NIL slots of its
4251 pathname argument to :WILD. In particular, when you ask for the
4252 contents of a directory (which you used to be able to do without
4253 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4254 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4255 ** changes in behavior that ANSI explicitly defines to be
4256 implementation dependent:
4257 *** The new compiler-only implementation still conforms with ANSI,
4258 but acts a little different than before. Besides the obvious
4259 changes in performance tradeoffs (that the cost per form passed
4260 to EVAL has gone up, and the cost per form executed by EVAL
4261 has gone down), the behavior of the system changes a little
4262 because there are no longer any interpreted function objects.
4263 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4264 e.g. doing COMPILE on the output of interactive DEFUN is
4266 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4268 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4269 has changed from (:CL) to NIL.
4270 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4271 e.g. #\Newline and #\Tab, don't have names specified in the
4272 ANSI Common Lisp standard, is now based on their ASCII symbolic
4273 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4274 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4275 are no longer used for output.
4276 ** changes in internal implementation constants:
4277 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4278 4 million. (If your application spends a lot of time GCing and
4279 you have a lot of RAM, you might want to experiment with
4280 increasing it even more.)
4281 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4282 However, almost all old code should still continue to work without
4283 immediate update, as SB-C-CALL is now a (deprecated) nickname
4285 ** Old operator names in the style DEF-FOO are now deprecated in
4286 favor of new corresponding names DEFINE-FOO, for consistency with
4287 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4288 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4289 internal symbols, but a few supported extensions like
4290 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4291 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4292 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4293 etc. as you get deeper into recursive calls to the debugger
4294 command loop, instead of the old "5]", "5]]", "5]]]"
4295 sequence. (I was motivated to do this when squabbles between
4296 ILISP and SBCL left me very deeply nested in the debugger. In the
4297 short term, this change will probably provoke more ILISP/SBCL
4298 squabbles, but hopefully it will be an improvement in the long run.)
4299 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4300 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4301 function, since declaiming return types involving aliens is
4302 (1) annoyingly messy to do by hand and (2) vital to efficient
4303 compilation of code which calls such functions.
4304 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4305 longer reexported by the SB-EXT package. They're solely useful
4306 for alien code, so it seems more logical that you should get
4307 them from the SB-ALIEN package, not in SB-EXT.
4308 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4309 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4310 features. Instead, the code that they used to control is always
4311 built into the system.
4312 * many other bug fixes
4313 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4314 advantage of the new EVAL-WHEN stuff and to clean them up in
4315 general, and they are now more ANSI-compliant in a number of
4316 ways. Martin Atzmueller is responsible for a lot of this.
4317 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4319 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4320 *** correct ERROR type for various file operations
4321 *** some fixes for Lisp streams
4322 *** DEFMETHOD syntax checking
4323 *** changing old weird representation of debug information as
4324 strings (which, among their other deficiencies, don't transform
4325 correctly when you rename packages, and don't change their
4326 print representation when you change things like *PACKAGE*
4327 and *PRINT-LENGTH*) to symbols and lists of symbols
4328 He also made several improvements and fixed several bugs in DESCRIBE.
4329 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4331 *** misbehavior of WRITE-STRING/WRITE-LINE
4332 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4333 and several other LOOP problems as well
4334 *** DIRECTORY when similar filenames are present
4335 *** DEFGENERIC with :METHOD options
4336 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4337 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4338 *** argument ordering in FIND with :TEST option
4339 *** mishandled package designator argument in APROPOS-LIST
4340 *** various problems in the backquote readmacro
4341 *** a bug in APROPOS
4342 *** probably some others that I'm not describing very well here,
4343 since the CVS log documents them by reference to sbcl-devel
4344 messages, and the SourceForge archives aren't working well.:-(
4345 ** Dan Barlow improved the Alpha port (and is making progress on the
4346 PPC port, for those of you who think different).
4347 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4348 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4349 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4350 continues to work on the SPARC port (for those of you in a position
4351 to look down upon our little PC-compatible boxes from a great height).
4352 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4353 and uses that copy, rather than the current dynamic value, when
4354 it's trying to decide whether to truncate output. Thus e.g.
4355 (let ((*print-lines* 50))
4356 (pprint-logical-block (stream nil)
4358 (let ((*print-lines* 8))
4359 (print (aref possiblybigthings i) stream)))))
4360 should now truncate the logical block only at 50 lines, instead of
4361 often truncating it at 8 lines, as it did before.
4362 * The doc/cmucl/ directory, containing old CMU CL documentation
4363 from the time of the fork, is no longer part of the base system.
4364 SourceForge has shut down its anonymous FTP service, and with it
4365 my original plan for distributing the old CMU CL documentation
4366 there. For now, if you need these files you can download an old
4367 SBCL source release and extract them from it.
4368 * The fasl file version number changed again, for dozens of reasons,
4369 some of which are apparent above.
4371 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4372 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4373 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4374 patch, so that DISASSEMBLE output is much nicer.
4375 * The code in the SB-PROFILE package now seems reasonably stable.
4376 I still haven't decided what the final interface should look like
4377 (I'd like PROFILE to interact cleanly with TRACE, since both
4378 facilities use function encapsulation) but if you have a need
4379 for profiling now, you can probably use it successfully with
4380 the current CMU-CL-style interface.
4381 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4382 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4383 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4384 link now returns the dangling link itself, and for similar
4385 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4386 link itself. (In these cases the old code signalled an error and
4387 looped endlessly, respectively.) Thus, DIRECTORY now works even
4388 in the presence of dangling and cyclic symbolic links.
4389 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4390 is now a supported extension again, since the consensus on
4391 sbcl-devel was that it can be useful for ordinary development
4392 work, not just for debugging SBCL itself.
4393 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4394 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4395 that currently-defined functions might be redefined later with
4396 different return types.
4397 * Hash tables can be printed readably, as inspired by CMU CL code
4398 of Eric Marsden and SBCL code of Martin Atzmueller.
4399 * better error handling in CLOS method combination, thanks to
4400 Martin Atzmueller porting Pierre Mai's CMU CL patches
4401 * more overflow fixes for >16Mbyte I/O buffers
4402 * A bug in READ has been fixed, so that now a single Ctrl-D
4403 character suffices to cause end-of-file on character streams.
4404 In particular, now you only need one Ctrl-D at the command
4405 line (not two) to exit SBCL.
4406 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4408 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4409 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4410 does the right thing.
4411 * The implementation of some type tests, especially for CONDITION
4412 types, is now tidier and maybe faster, due to CMU CL code
4413 originally by Douglas Crosher, ported by Martin Atzmueller.
4414 * Some math functions have been fixed, and there are new
4415 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4416 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4417 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4418 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4419 likely to be built into sbcl-0.7.0.)
4420 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4421 CL, ported to SBCL by Martin Atzmueller)
4422 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4423 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4424 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4425 * There's a new slam.sh hack to shorten the edit/compile/debug
4426 cycle for low-level changes to SBCL itself, and a new
4427 :SB-AFTER-XC-CORE target feature to control the generation of
4428 the after-xc.core file needed by slam.sh.
4429 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4430 COMPILE-FILE is no longer supported, so that now every function
4431 gets an entry point, so that block compilation looks a little
4432 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4433 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4434 returns the number of bytes consed since the system started,
4435 rather than the number consed since the first time the function
4436 was called. (The new definition parallels ANSI functions like
4437 CL:GET-INTERNAL-RUN-TIME.)
4438 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4439 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4440 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4441 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4442 * Fasl file version numbers are now independent of the target CPU,
4443 since historically most system changes which required version
4444 number changes have affected all CPUs equally. Similarly,
4445 the byte fasl file version is now equal to the ordinary
4448 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4449 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4450 is no longer recognized. I apologize for this, because it was
4451 listed in SB-EXT as a supported extension, but I found that
4452 its existing behavior was poorly specified, as well as incorrectly
4453 specified, and it looked like too much of a mess to straighten it
4454 out. I have enough on my hands trying to get ANSI stuff to work..
4455 * many patches ported from CMU CL by Martin Atzmueller, with
4456 half a dozen bug fixes in pretty-printing and the debugger, and
4457 half a dozen others elsewhere
4458 * fixed bug 13: Floating point infinities are now supported again.
4459 They might still be a little bit flaky, but thanks to bug reports
4460 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4461 as flaky as they were.
4462 * The --noprogrammer command line option is now supported. (Its
4463 behavior is slightly different in detail from what the old man
4464 page claimed it would do, but it's still appropriate under the
4465 same circumstances that the man page talks about.)
4466 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4467 are now supported, and enabled by default. Thus, the compiler can
4468 handle many floating point and complex operations much less
4469 inefficiently. (Thus e.g. you can implement a complex FFT
4471 * The compiler now detects type mismatches between DECLAIM FTYPE
4472 and DEFUN better, and implements CHECK-TYPE more correctly, and
4473 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4474 thanks to patches from Martin Atzmueller.
4475 * various fixes to make the cross-compiler more portable to
4476 ANSI-conforming-but-different cross-compilation hosts (notably
4477 Lispworks for Windows, following bug reports from Arthur Lemmens)
4478 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4479 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4480 fixed thanks to Pierre Mai's CMU CL patches.
4481 * fixes to keep the system from overflowing internal counters when
4482 it tries to use i/o buffers larger than 16M bytes
4483 * fixed bug 45a: Various internal functions required to support
4484 complex special functions have been merged from CMU CL sources.
4485 (When I was first setting up SBCL, I misunderstood a compile-time
4486 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4487 * improved support for type intersection and union, fixing bug 12
4488 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4489 more obscure bugs as well
4490 * some steps toward byte-compiling non-performance-critical
4491 parts of the system, courtesy of patches from Martin Atzmueller
4492 * Christophe Rhodes has made some debian packages of sbcl at
4493 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4494 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4495 stable, but are nonetheless usable. When he's ready, I'd be happy
4496 to add them to the SourceForge "File Releases" section. (And if
4497 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4498 * new fasl file format version number (because of changes in
4499 internal representation of (OR ..) types to accommodate the new
4500 support for (AND ..) types, among other things)
4502 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4503 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4505 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4507 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4508 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4509 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4510 * DESCRIBE now works on structure objects again.
4511 * Most function call argument type mismatches are now handled as
4512 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4513 know whether the function will be redefined before the call is
4514 executed. (The compiler could flag local calls with full WARNINGs,
4515 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4516 it doesn't keep track of enough information to know whether calls
4517 are local in this sense.)
4518 * Compiler output is now more verbose, with messages truncated
4519 later than before. (There should be some supported way for users
4520 to override the default verbosity, but I haven't decided how to
4521 provide it yet, so this behavior is still controlled by the internal
4522 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4523 src/compiler/ir1util.lisp.)
4524 * Fasl file format version numbers have increased again, because
4525 support for the Gray streams extension changes the layout of the
4526 system's STREAM objects.
4527 * The Gray subclassable streams extension now works, thanks to a
4528 patch from Martin Atzmueller.
4529 * The full LOAD-FOREIGN extension (not just the primitive
4530 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4531 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4532 but like most other programs, it defaults to copying the Unix
4533 environment from the original process instead of starting the
4534 new process in an empty environment.
4535 * Extensions which manipulate the Unix environment now support
4536 an :ENVIRONMENT keyword option which doesn't smash case or
4537 do other bad things. The CMU-CL-style :ENV option is retained
4538 for porting convenience.
4539 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4540 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4542 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4544 * A patch from Martin Atzmueller seems to have solved the SIGINT
4545 problem, and as far as we know, signal-handling now works cleanly.
4546 (If you find any new bugs, please report them!)
4547 * The system no longer defaults Lisp source file names to types
4548 ".l", ".cl", or ".lsp", but only to ".lisp".
4549 * The compiler no longer uses special default file extensions for
4550 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4551 seems to expect a single default extension for all compiled code,
4552 and there's no compelling reason to try to stretch the standard
4553 to allow two different extensions.) Instead, byte-compiled files
4554 default to the same extension as native-compiled files.
4555 * Fasl file format version numbers have increased again, because
4556 a rearrangement of internal implementation packages made some
4557 dumped symbols in old fasl files unreadable in new cores.
4558 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4559 many fewer weird special cases.
4560 * Bug #17 (differing COMPILE-FILE behavior between logical and
4561 physical pathnames) has been fixed, and some related misbehavior too,
4562 thanks to a patch from Martin Atzmueller.
4563 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4564 by Tim Moore, ported to SBCL by Martin Atzmueller.
4565 * Martin Atzmueller fixed several filesystem-related problems,
4566 including bug #36, in part by porting CMU CL patches, which were
4567 written in part by Paul Werkowski.
4568 * More compiler warnings in src/runtime/ are gone, thanks to
4569 more patches from Martin Atzmueller.
4570 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4573 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4575 * DESCRIBE now works on CONDITION objects.
4576 * The debugger now handles errors which arise when trying to print
4577 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4579 * The build system now uses an additional file, customize-target-features.lisp,
4580 to allow local modifications to the target *FEATURES* list. (The point of
4581 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4582 debugging features enabled, without having to worry about propagating it
4583 into everyone's system when I do a "cvs update".) When no
4584 customize-target-features.lisp file exists, the target *FEATURES* list
4585 should be constructed the same way as before.
4586 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4587 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4588 warn about behavior which is undefined under the ANSI spec. Note: This
4589 is specified by ANSI, but it's not very popular with programmers.
4590 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4591 macro in the SBCL sources for an example of a workaround which you
4592 might use to make portable ANSI-standard code which does what you want.
4593 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4594 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4595 when it's used as a non-toplevel form. (This is required in order
4596 to implement the DEFCONSTANT-EQX macro.)
4597 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4598 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4599 funny things, due to bugs in the implementation of EVAL-WHEN
4600 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4601 non-toplevel DEFCONSTANTs are uncommon.)
4602 * The core file version number and fasl file version number have been
4603 incremented, because the old noncompliant DEFCONSTANT behavior involved
4604 calling functions which no longer exist, and because I also took the
4605 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4606 * fixed bug 1 (error handling before read-eval-print loop starts), and
4607 redid debugger restarts and related debugger commands somewhat while
4609 ** The QUIT debugger command is gone, since it did something
4610 rather different than the SB-EXT:QUIT command, and since it never
4611 worked properly outside the main toplevel read/eval/print loop.
4612 Invoking the new TOPLEVEL restart provides the same functionality.
4613 ** The GO debugger command is also gone, since you can just invoke
4614 the CONTINUE restart directly instead.
4615 ** The TOP debugger command is also gone, since it's redundant with the
4616 FRAME 0 command, and since it interfered with abbreviations for the
4618 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4620 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4621 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4622 some porting work by Martin Atzmueller)
4623 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4624 with a boatload of patches which he ported to SBCL. Now that those
4626 ** The system tries to make sure that its low-priority messages
4627 are prefixed by semicolons, to help people who like to use
4628 syntax highlighting in their ILISP buffer. (This patch
4629 was originally due to Raymond Toy.)
4630 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4631 patches originally written by Raymond Toy.
4632 ** The compiler understands coercion between single-value and
4633 multiple-VALUES type expressions better, getting rid of some very
4634 weird behavior, thanks to patches originally by Robert MacLachlan
4635 and Douglas Crosher.
4636 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4637 lambda lists, thanks to a patch originally by Pierre Mai.
4638 ** The system no longer bogusly warns about "abbreviated type
4640 ** The compiler gets less confused by inlining and RETURN-FROM,
4641 thanks to some patches originally by Tim Moore.
4642 ** The system no longer hangs when dumping circular lists to fasl
4643 files, thanks to a patch originally from Douglas Crosher.
4644 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4645 undefined function error.
4646 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4647 in structure slot initforms) for now, documented workaround instead:-|
4648 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4649 * fixed bug 5: added stubs for various Gray stream functions called
4650 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4651 installed, at least appropriate type errors are generated
4652 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4653 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4654 consistently in DEFMETHOD forms.
4655 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4656 it doesn't seem to affect SBCL after all
4657 * The C runtime system now builds with better optimization and many
4658 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4660 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4662 * The system is now under CVS at SourceForge (instead of the
4663 CVS repository on my home machine).
4664 * The new signal handling code has been tweaked to treat register
4665 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4666 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4667 downstream, e.g. in debug-int.lisp, has implicit dependencies
4668 on the unsignedness of integer representation of machine words,
4669 and that caused the system to bomb out with infinite regress
4670 when trying to recover from type errors involving signed values,
4671 e.g. (BUTLAST '(1 2 3) -1).)
4672 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4673 (This was one of the bugs Peter Van Eynde reported back in July.)
4674 * The system now uses code inspired by Colin Walters' O(N)
4675 implementation of MAP (from the cmucl-imp@cons.org mailing
4676 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4677 inline the MAP operation, and there is more than one
4678 sequence argument to the MAP call (so that it can't just
4679 do ETYPECASE once and for all based on the type of the
4680 single sequence argument). (The old non-inline implementation
4681 of the general M-argument sequence-of-length-N case required
4682 O(M*N*N) time when any of the sequence arguments were LISTs.)
4683 * The QUIT :UNIX-CODE keyword argument has been renamed to
4684 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4685 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4687 * Raymond Wiker's patches to port dynamic loading from Linux to
4688 FreeBSD have been added.
4689 * The BUGS file is now more nearly up to date, thanks in large part
4690 to Martin Atzmueller's review of it.
4691 * The debugger now flushes standard output streams before it begins
4692 its output ("debugger invoked" and so forth).
4693 * The core version number and fasl file version number have both
4694 been incremented, because of incompatible changes in the layout
4696 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4697 used to not be called for a saved Lisp image.)
4698 * Martin Atzmueller's version of a patch to fix a compiler crash,
4699 as posted on sbcl-devel 13 September 2000, has been installed.
4700 * Instead of installing Martin Atzmueller's patch for the
4701 compiler transform for SUBSEQ, I deleted the compiler transform,
4702 and transforms for some similar consing operations.
4703 * A bug in signal handling which kept TRACE from working on OpenBSD
4705 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4706 away by constant folding
4707 * The system now defines its address space constants in one place
4708 (in the Lisp sources), and propagates them automatically elsewhere
4709 (through GENESIS and the sbcl.h file). Therefore, patching the
4710 address map is less unnecessarily tedious and error-prone. The
4711 Lisp names of address space constants have also been systematized.
4712 * CVS tags like dollar-Header-dollar have been removed from
4713 the sources, because they have never saved me trouble and
4714 they've been source of trouble working with patches and other
4715 diff-related operations.
4716 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4717 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4719 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4721 * The system has been ported to OpenBSD.
4722 * The system now compiles with a simple "sh make.sh" on the systems
4723 that it's supported on. I.e., now you no longer need to tweak
4724 text in the target-features.lisp-expr and symlinks in src/runtime/
4725 by hand, the make.sh takes care of it for you.
4726 * The system is no longer so grossly inefficient when compiling code
4727 involving vectors implemented as general (not simple) vectors (VECTOR T),
4728 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4729 which dares to use the various sequence functions on non-simple
4730 vectors, takes less of a performance hit.
4731 * There is now a primitive type predicate VECTOR-T-P
4732 to test for the (VECTOR T) type, so that e.g.
4733 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4734 can now be compiled with some semblance of efficiency. (The old code
4735 turned the type declaration into a full call to %TYPEP at runtime!)
4736 * AREF on (VECTOR T) is still not fast, since it's still compiled
4737 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4738 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4739 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4740 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4741 without making full calls to SUBTYPEP at runtime.
4742 (Some analogous efficiency issues for non-simple vectors specialized to
4743 element types other than T, or for non-simple multidimensional arrays,
4744 have not been addressed. They could almost certainly be handled the
4745 same way if anyone is motivated to do so.)
4746 * The changes in array handling break binary compatibility, so
4747 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4748 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4749 instead of (VALUES T T).
4750 * By following the instructions that Dan Barlow posted to sbcl-devel
4751 on 2 July 2000, I was able to enable primitive dynamic object
4752 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4753 functionality is not implemented (since it calls ld to resolve
4754 library references automatically, requiring RUN-PROGRAM for its
4755 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4756 try to resolve library references) is now supported.
4757 * The system now flushes the standard output streams when it terminates,
4758 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4759 them at several other probably-convenient times, e.g. in each pass of
4760 the toplevel read-eval-print loop, and after evaluating a form given
4761 as an "--eval" command-line option. (These changes were motivated by a
4762 discussion of stream flushing issues on cmucl-imp in August 2000.)
4763 * The source transform for TYPEP of array types no longer assumes
4764 that an array whose element type is a not-yet-defined type
4765 is implemented as an array of T, but instead punts, so that the
4766 type will be interpreted at runtime.
4767 * There is now some support for cross-compiling in make.sh: each of
4768 the phases of make.sh has its own script. (This should be transparent
4769 to people doing ordinary, non-cross-compile builds.)
4770 * Since my laptop doesn't have hundreds of megabytes of memory like
4771 my desktop machine, I became more motivated to do some items on
4772 my to-do list in order to reduce the size of the system a little:
4773 ** Arrange for various needed-only-at-cold-init things to be
4774 uninterned after cold init. To support this, those things have
4775 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4776 symbols with such names are now uninterned after cold init).
4777 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4778 fasl files for cold load.
4779 ** Remove the old compiler structure pooling code (which used to
4780 be conditional on the target feature :SB-ALLOC) completely.
4781 ** Redo the representation of some data in cold init to be more compact.
4782 (I also looked into supporting byte compiled code at bootstrap time,
4783 which would probably reduce the size of the system a lot, but that
4784 looked too complicated, so I punted for now.)
4785 * The maximum signal nesting depth in the src/runtime/ support code has
4786 been reduced from 4096 to 256. (I don't know any reason for the very
4787 large old value. If the new smaller value turns out to break something,
4788 I'll probably just bump it back up.)
4789 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4791 * Many, many bugs reported by Peter Van Eynde have been added to
4792 the BUGS list; some have even been fixed.
4793 * While enabling dynamic object file loading, I tried to make the
4794 code easier to understand, renaming various functions and variables
4795 with less ambiguous names, and changing some function calling
4796 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4797 * While trying to figure out how to do the OpenBSD port, I tried to
4798 clean up some of the code in src/runtime/. In particular, I dropped
4799 support for non-POSIX signal handling, added various comments,
4800 tweaked the code to reduce the number of compilation warnings, and
4801 renamed some files to increase consistency.
4802 * To support the new automatic configuration functionality in make.sh,
4803 the source file target-features.lisp-expr has been replaced with the
4804 source file base-target-features.lisp-expr and the machine-generated
4805 file local-target-features.lisp-expr.
4806 * fixed a stupid quoting error in make.sh so that using CMU CL
4807 "lisp -batch" as cross-compilation host works again
4809 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4811 * DESCRIBE no longer tries to call itself recursively to describe
4812 bound/fbound values, so that it no longer fails on symbols which are
4813 bound to themselves (like keywords, T, and NIL).
4814 * DESCRIBE now works on generic functions.
4815 * The printer now prints less-screwed-up representations of closures
4816 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4817 * A private symbol is used instead of the :EMPTY keyword previously
4818 used to mark empty slots in hash tables. Thus
4819 (DEFVAR *HT* (MAKE-HASH-TABLE))
4820 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4821 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4822 now does what ANSI says that it should. (You can still get
4823 similar noncompliant behavior if bang on the hash table
4824 implementation with all the symbols you get back from
4825 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4826 This breaks binary compatibility, since tests for equality to
4827 :EMPTY are wired into things like the macroexpansion of
4828 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4830 * There's now a minimal placeholder implementation for CL:STEP,
4831 as required by ANSI.
4832 * An obscure bug in the interaction of the normal compiler, the byte
4833 compiler, inlining, and structure predicates has been patched
4834 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4835 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4837 * Missing ordinary arguments in a macro call are now detected even
4838 when the macro lambda list contains &KEY or &REST.
4839 * The debugger no longer complains about encountering the top of the
4840 stack when you type "FRAME 0" to explicitly instruct it to go to
4841 the top of the stack. And it now prints the frame you request even
4842 if it's the current frame (instead of saying "You are here.").
4843 * As specified by ANSI, the system now always prints keywords
4844 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4846 * The default initial SIZE of HASH-TABLEs is now smaller.
4847 * Type information from CLOS class dispatch is now propagated
4848 into DEFMETHOD bodies, so that e.g.
4849 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4851 is now basically equivalent to
4852 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4853 (DECLARE (TYPE SINGLE-FLOAT X))
4855 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4856 operation, without having to do run-time type dispatch.
4857 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4858 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4859 * Since I don't seem to be making big file reorganizations very often
4860 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4861 is overflowing my ability to conveniently back them up), I've finally
4862 checked the system into CVS. (The CVS repository is on my home system,
4863 not at SourceForge -- putting it on SourceForge might come later.)
4864 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4865 high-level GC-NOTIFY-FOO functions send their output. (There's
4866 still very little control of where low-level verbose GC functions
4867 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4868 less than it used to -- the GC-NOTIFY-FOO functions are now under
4869 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4870 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4871 in only one place in the source code, and propagates it automatically
4872 everywhere that it's needed. Thus e.g. when I bump the version from
4873 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4874 * The C source files now include boilerplate legalese and documentation
4875 at the head of each file (just as the Lisp source files already did).
4876 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4877 to his page will be replaced with a link to his new CLiki service.
4879 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4881 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4882 * The build process now looks for GNU make under the default name "gmake",
4883 instead of "make" as it used to. If GNU make is not available as "gmake"
4884 on your system, you can change this default behavior by setting the
4885 GNUMAKE environment variable.
4886 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4887 can build without error under CMU CL.
4889 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4891 * There is now a partial SBCL user manual (with some new text and some
4892 text cribbed from the CMU CL manual).
4893 * The beginnings of a profiler have been added (starting with the
4894 CMU CL profiler and simplifying and cleaning up). Eventually the
4895 main interface should be through the TRACE macro, but for now,
4896 it's still accessed through vaguely CMU-CL-style functions and macros
4897 exported from the package SB-PROFILE.
4898 * Some problems left over from porting CMU CL to the new
4899 cross-compilation bootstrap process have been cleaned up:
4900 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4901 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4902 part when getting rid of the compiler *BACKEND* stuff.)
4903 ** The value of *NULL-TYPE* was screwed up, because it was
4904 being initialized before the type system knew the final
4905 definition of the 'NULL type. This screwed up several key
4906 optimizations in the compiler, causing inefficiency in all sorts
4907 of places. (I found it because I wanted to understand why
4908 GET-INTERNAL-RUN-TIME was consing.)
4909 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4910 PROCLAIM FTYPE information. Unfortunately this broke binary
4911 compatibility again, since now the forms output by DEFGENERIC
4912 to refer to functions which didn't exist in 0.6.3.
4913 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4914 can use the new (as of 0.6.3) transform for SOME into MAP into
4916 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4917 values to (INTEGER 0 1000000), so that the time code will no longer
4918 occasionally get blown up by Linux returning 1000000 microseconds
4919 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4920 its output conform to the ANSI spec. (Alas, this makes its output
4921 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4922 * A full call to MAP NIL with a single sequence argument no longer conses.
4923 * fixes to problems pointed out by Martin Atzmueller:
4924 * The manual page no longer talks about multiprocessing as though
4925 it were currently supported.
4926 * The ILISP support patches have been removed from the distribution,
4927 because as of version 5.10.1, ILISP now supports SBCL without us
4928 having to maintain patches.
4929 * added a modified version of Raymond Toy's recent CMU CL patch for
4930 EQUALP comparison of HASH-TABLE
4932 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4934 * The system still can't cross-compile itself with
4935 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4936 entails), but at least it can compile more of itself that way
4937 than it used to be able to, and various buglets which were uncovered
4938 by trying to cross-compile itself that way have now been fixed.
4939 * This release breaks binary compatibility again. This time
4940 at least I've incremented the FASL file format version to 2, so that the
4941 problem can be detected reliably instead of just causing weird errors.
4942 * various new style warnings:
4943 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4944 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4945 ** using the lexical binding of a variable named in the *FOO* style
4946 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4947 as specified by ANSI.
4948 * *RANDOM-STATE* is no longer automatically initialized from
4949 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4950 default behavior of the system is to repeat its behavior every time
4951 it's run. If you'd like to change this behavior, you can always
4952 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4953 old convention there was no comparably easy way to get the system to
4954 repeat its behavior every time it was run.
4955 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4956 FTYPE declarations has been removed, in favor of their ANSI
4957 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4958 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4959 the types of their sequence arguments can be determined at compile time.
4960 This is done through a new open code expansion for MAP which eliminates
4961 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4962 argument types can be determined at compile time.
4963 * The optimizer now transforms COERCE into an identity operation when it
4964 can prove that the coerced object is already of the correct type. (This
4965 can be a win for machine generated code, including the output of other
4966 optimization transforms, such as the MAP transform above.)
4967 * Credit information has been moved from source file headers into CREDITS.
4968 * Source file headers have been made more standard.
4969 * The CASE macro now compiles without complaining even when it has
4972 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4974 * (Note that the way that the PCL macroexpansions were rewritten
4975 to accommodate the change in DEFGENERIC below breaks binary
4976 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4977 not run under sbcl-0.6.2. Once we get out of alpha releases,
4978 i.e. hit release 1.0.0, we'll probably try to maintain binary
4979 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4980 and sbcl-1.4.4. Until then, however, it might be fairly common
4981 for maintenance releases to break binary compatibility.)
4982 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4984 * The reporting of unhandled signals has been changed to print some
4985 explanatory text as well as the report form. (Previously only
4986 the report form was printed.)
4987 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4988 it defines, so that the compiler no longer issues undefined function
4989 warnings for compiled-but-not-yet-loaded generic functions.
4990 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4991 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4992 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4993 section of the ANSI spec are supported.
4994 * The "" nickname for the "KEYWORD" package has been removed.
4995 The reader still handles symbol tokens which begin with a package marker
4996 as keywords, but it doesn't expose its mechanism for doing so in the
4997 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4998 * The system now issues STYLE-WARNINGs for contradictory TYPE
4999 proclamations. (Warnings for contradictory FTYPE proclamations would
5000 be nice too, but those can't be done usefully unless the type system
5001 is made smarter about FUNCTION types.)
5002 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5003 systematized, so that "*target-*.lisp is supposed to exist only on the
5004 target and imply that there's a related file which exists on the
5005 host, and *host-*.lisp is supposed to exist only on the host and imply
5006 that there's a related file which exists on the target. This involves a
5007 lot of renaming. Hopefully the acute confusion caused by the renaming
5008 will be justified by the reduction in chronic confusion..
5009 ** runtime-type.lisp -> early-target-type.lisp
5010 ** target-type.lisp -> late-target-type.lisp
5011 ** early-host-format.lisp -> early-format.lisp
5012 ** late-host-format.lisp -> late-format.lisp
5013 ** host-error.lisp -> misc-error.lisp
5014 ** early-error.lisp -> early-target-error.lisp
5015 ** late-error.lisp -> late-target-error.lisp
5016 ** host-defboot.lisp -> early-defboot.lisp
5017 ** code/misc.lisp -> code/target-misc.lisp
5018 ** code/host-misc.lisp -> code/misc.lisp
5019 ** code/numbers.lisp -> code/target-numbers.lisp
5020 ** code/early-numbers.lisp -> numbers.lisp
5021 ** early-host-type.lisp -> early-type.lisp
5022 ** late-host-type.lisp -> late-type.lisp
5023 ** host-typep.lisp -> typep.lisp
5024 ** load.lisp -> target-load.lisp
5025 ** host-load.lisp -> load.lisp
5026 ** host-disassem.lisp -> disassem.lisp
5027 ** host-insts.lisp -> insts.lisp
5028 ** byte-comp.lisp -> target-byte-comp.lisp
5029 ** host-byte-comp.lisp -> byte-comp.lisp
5030 ** host-signal.lisp -> signal.lisp
5031 ** host-defstruct.lisp -> defstruct.lisp
5032 ** late-target-type.lisp -> deftypes-for-target.lisp
5033 Furthermore, several other previously target-only files foo.lisp (e.g.
5034 hash-table.lisp and random.lisp) have been split into a target-and-host
5035 foo.lisp file and a target-only target-foo.lisp file, with their key type
5036 definitions in the target-and-host part, so that the cross-compiler will
5037 know more about target types.
5038 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5039 gone away. In their place are various *BACKEND-FOO* variables
5040 corresponding to the slots of the old structure.
5041 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5042 into the target SBCL has been fixed.
5043 * The chill.lisp system for loading cold code into a running SBCL
5045 * Support for the CMU CL "scavenger hook" extension has been removed.
5046 (It was undocumented and unused in the CMU CL sources that SBCL was
5047 derived from, and stale in sbcl-0.6.1.)
5048 * Various errors in the cross-compiler type system were detected
5049 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5050 (enabling various consistency checks). Many of them were fixed,
5051 but some hard problems remain, so the compiler is back to
5052 running without *TYPE-SYSTEM-INITIALIZED* for now.
5053 * As part of the cross-compiler type system cleanup, I implemented
5054 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5055 * I have started adding UNCROSS calls throughout the type system
5056 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5057 on cross-compiler input files will be able to go away, and various
5059 * CONSTANTP now returns true for quoted forms (as explicitly required
5062 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5064 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5065 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5066 (MAKE-LIST -1). In the longer term, it ought to become true
5067 that declarations are assertions even at SAFETY 1. For now, it's not
5068 quite true even at SAFETY 3, but it's at least more nearly true..
5069 (Note that this change seems to increases the size of the system by
5070 O(5%) and to decrease the speed of the compiler by 20% or more.)
5071 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5072 for the problem of printing dozens of lines of distracting information
5073 about low-level system machinery as part of the top stack frame
5074 on entry to the debugger when an undefined function was called.
5075 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5076 is not reset to COMMON-LISP-USER.
5077 * Compilation of stuff related to dyncount.lisp has been made conditional
5078 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5079 smaller. The various dyncount-related symbols have been moved into
5080 a new "SB-DYNCOUNT" package.
5081 * tty-inspect.lisp has been renamed to inspect.lisp.
5082 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5083 feature has gone away. (When we eventually port to other flavors of
5084 libc and/or Unix, we'll try to make the differences between flavors
5085 invisible at the user level.)
5086 * Various other *FEATURES* tags, and/or their associated conditionals,
5087 have been removed if obsolescent, or given better documentation, or
5088 sometimes given more-mnemonic names.
5090 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5092 * tidied up "make.sh" script
5093 * tidied up system directory structure
5094 * better "clean.sh" behavior
5095 * added doc/FOR-CMUCL-DEVELOPERS
5096 * many many small tweaks to output format, e.g. removing possibly-confusing
5097 trailing #\. character in DESCRIBE-INSTANCE
5098 * (EQUALP #\A 'A) no longer signals an error.
5099 * new hashing code, including EQUALP hashing
5100 * tidied up Lisp initialization and toplevel
5101 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5102 * command line argument processing
5103 * added POSIX-GETENV function to deal with Unix-ish environment variables
5104 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5105 terminating SBCL on EOF
5106 * non-verbose GC by default
5107 * There is no more "sbcl" shell script; the sbcl file is now the C
5108 runtime executable (just like CMU CL).
5109 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5111 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5112 symbol and package information as Lisp native symbol and package objects
5113 instead of strings naming symbols and strings naming packages. This way,
5114 whenever packages are renamed (as in warm init), debug information is
5115 transformed along with everything else.
5116 * tweaked the optimization policy declarations which control the building
5117 of SBCL itself. Now, among other things, the system no longer saves
5118 source location debugging information. (This helps two problems at once
5119 by reducing SBCL size and by keeping SBCL from trying to look for its
5120 sources -- which may not exist -- when reporting errors.)
5121 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5122 debugging and testing purposes
5123 * cleaned up printing, making the printer call PRINT-OBJECT for
5124 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5125 methods, giving nearly-ANSI behavior
5126 * converted almost all special variables to use *FOO* naming convention
5127 * deleted PARSE-TIME functionality, since it can be done portably
5128 * moved some files out of cold init into warm init
5129 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5131 * regularized formatting of source files
5132 * added an install.sh script
5133 * fixed ridiculous memory usage of cross-compiler by making
5134 compiler/alloc.lisp not try to do pooling unless it can hook
5135 itself into the GC of the cross-compilation host. Now the system
5136 builds nicely on my old laptop.
5137 * added :SB-ALLOC in target-features.lisp-expr
5138 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5139 was not implemented)
5140 * re-did condition handling and note reporting in the compiler. Notes
5141 are no longer handled by signalling conditions. Style warnings
5142 and warnings are handled more correctly and reported in such a way
5143 that it's easy to find one or the other in your output (so that you
5144 can e.g. figure out which of many problems caused COMPILE-FILE to
5146 * changed the severity of several compiler warnings from full WARNING
5147 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5148 compiler note reporting so that it doesn't use the condition system
5149 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5150 COMPILE-FILE command)
5151 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5152 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5153 no longer supported, since their implementation was deeply intertwingled
5154 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5155 * removed bogus "support" for compiler macros named (SETF FOO), and
5156 removed the compiler macro for SETF INFO (but only after making a fool
5157 of myself on the cmucl-imp mailing list by posting a bogus patch for
5158 DEFINE-COMPILER-MACRO..)
5159 * Compiled files containing forms which have side effects on the Lisp
5160 reader (such as DEFPACKAGE forms) are now handled more correctly.
5161 (Compiler queuing of top level lambdas has been suppressed by setting
5162 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5163 * deleted various currently-unused source files, e.g. gengc.lisp. They
5164 may be added back at some point e.g. when porting to other architectures,
5165 but until they are it's distracting to distribute them and to try to
5167 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5168 there were so many of them they're just distractions, and UNCROSS is
5169 known to be able to handle the current sources
5170 * moved PROFILE functionality into TRACE, so that it will be clear
5171 how the wrapping and unwrapping of functions when you profile them
5172 interacts with the wrapping and unwrapping of functions when you
5173 trace them. (Actually, the functionality isn't there yet, but at least
5174 the interface specification is there. Hopefully, the functionality will
5175 arrive with some future maintenance release.)
5176 * removed host-oops.lisp
5177 * changed signature of QUIT function to allow UNIX-CODE argument
5178 * fixed READ-SEQUENCE bug
5179 * tweaked verbose GC output so that it looks more like the progress
5180 output that ANSI specifies for functions like LOAD
5181 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5182 * added <http://sbcl.sourceforge.com> to the banner information printed by