1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
3 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
4 (thanks to Paul Khuong)
6 changes in sbcl-1.0.29 relative to 1.0.28:
7 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
8 https://bugs.launchpad.net/sbcl
9 Bugs can be reported directly there, or by sending email to
10 sbcl-bugs@lists.sourceforge.net
11 (no subscription required.)
12 * minor incompatible change: under weak type checking policy integer
13 types are weakened less aggressively.
14 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
15 allowed to return, which causes SBCL to quit with exit status 0. Previously
16 if the function returned with a small integer return value, that value
17 was accidentally reused as the exit status.
18 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
19 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
20 :HASH-FUNCTION argument. Refer to user manual for details.
21 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
23 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
24 microseconds since the Unix epoch on all platforms.
25 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
26 allows the compiler to safely elide boundedness checks for special
28 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
29 the symbol, prohibits both lexical and dynamic binding. This is mainly an
30 efficiency measure for threaded platforms, but also valueable in
32 * new feature: UNC pathnames are now understood by the system on Windows.
33 * optimization: the compiler uses a specialized version of FILL when the
34 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
36 * optimization: accesses to potentially non-simple arrays where element type
37 is known are 50% faster.
38 * optimization: compiler now generates faster array typechecking code.
39 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
41 * optimization: multidimensional array accesses in the absence of type
42 information regarding array rank are approximately 10% faster due to
43 open coding of ARRAY-RANK.
44 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
45 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
47 * optimization: result of call to VECTOR can now be stack allocated.
48 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
49 as long as the resulting array is one-dimensional and has a known
50 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
51 length of the list matches the known length of the vector does not
52 allocate the list as an intermediate step. Ditto for VECTOR and simple
54 * optimization: MAKE-ARRAY can now stack allocate in the presence of
55 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
56 known element type, and is known to be simple and one dimensional.
57 * improvement: SBCL now emits a compiler note where stack allocation was
58 requested but could not be provided (not in all cases, unfortunately)
59 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
60 * improvement: pretty-printing loop has been implemented properly. (thanks
62 * documentation: CLOS slot typechecing policy has been documented.
63 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
64 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
65 pointer, leading to memory faults. (thanks to Bart Botta)
66 * bug fix: better floating point exception handling on x86/OpenBSD.
67 (thanks to Josh Elsasser)
68 * bug fix: exit status from QUIT when called under --script was lost
69 (reported by Hubert Kauker)
70 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
71 same implementation of FILL to initialize the array, even if a more
72 efficient one was available (reported by Stas Boukarev, thanks to
74 * bug fix: potential miscompilation of array stack allocation on x86 and
75 x86-64. (reported by Time Tossavainen)
76 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
77 result in their subforms being treated as top level forms. (reported by
79 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
80 than a machine register could leave garbage in the high bits of the
81 result register (bug 316325).
82 * bug fix: disable address space randomization Linux/x86-64 as well,
83 not just x86-64. (reported by Ken Olum)
84 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
85 generate incorrect code.
86 * bug fix: #201; type inference for CONS and ARRAY types could derive
87 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
88 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
89 could not be assigned to or bound with PROGV. (reported by Lorenz
91 * bug fix: the value of CL:- in the inspector was the previous expression
92 evaluated rather than the expression being evaluated.
93 * bug fix: constants can no longer be locally declared special.
94 * bug fix: signals delivered to threads started from foreign land (read:
95 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
96 thread by blocking all signals and resignalling.
97 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
98 from :INITFORM, if any.
100 changes in sbcl-1.0.28 relative to 1.0.27:
101 * a number of bugs in cross-compilation have been fixed, with the ultimate
102 result that building under (at least) clisp should be much more reliable.
103 * minor incompatible changes: echo-streams now propagate unread-char to the
104 underlying input stream, and no longer permit unreading more than one
106 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
107 frames, allowing for instance more reliable backtraces.
108 * improvement: the debugger REPL can now reference lexical variables
109 by name directly for code compiled with (DEBUG 3).
110 * improvement: errors from malformed declarations now have better source
111 paths associated with them. (thanks to Tobias Rittweiler)
112 * optimization: faster local calls on x86/x86-64
113 * bug fix: some error messages for out-of-bound array indexes confused the
114 index and the bound. (thanks to Stas Boukarev)
115 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
117 * bug fix: running regressions tests in shells without OSTYPE set now works.
118 (reported by Harald Hanche-Olsen)
119 * bug fix: more robust static space exhaustion signalling from
120 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
121 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
122 docstring away instead of storing it under names such as (LAMBDA (X)).
123 (reported by Leslie Polzer)
124 * bug fix: timers could go off in the wrong order, be delayed indefinitely
125 (thanks to Ole Arndt for the patch)
126 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
127 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
128 potentially-invalid effective methods in its cache.
129 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
130 instances as well (thanks to Paul Khuong)
131 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
132 SB-POSIX:WAITPID and their C equivalents.
133 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
135 changes in sbcl-1.0.27 relative to 1.0.26:
136 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
137 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
138 * improvement: the system either recovers from stack exhaustion or dies
139 properly as opposed to leaving the user uncertain of whether the handler
140 trampled on some random memory next to the stack or having to rely on
141 --lose-on-corruption (which is still a good idea to use in production
142 because stack exhaustion can happen in signal handlers which will likely
144 * bug fix: fix gc related interrupt handling bug on ppc (regression from
145 1.0.25.37, reported by Harald Hanche-Olsen)
146 * bug fix: work around signal delivery bug in darwin (regression from
147 1.0.25.44, reported by Sidney Markowitz)
148 * bug fix: fix ERROR leaking memory (reported by David Thompson)
150 changes in sbcl-1.0.26 relative to 1.0.25:
151 * incompatible change: an interruption (be it a function passed to
152 INTERRUPT-THREAD or a timer function) runs in an environment where
153 interrupts can be enabled. The interruption can use
154 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
155 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
156 potentially running out of stack. Keep in mind that in the absence
157 of WITHOUT-INTERRUPTS some potentially blocking operation such as
158 acquiring a lock can enable interrupts.
159 * incompatible change: GC-OFF and GC-ON are removed, as they were
160 always unsafe. Use WITHOUT-GCING instead.
161 * new feature: runtime option --disable-ldb
162 * new feature: runtime option --lose-on-corruption to die at the
163 slightest hint of possibly non-recoverable errors: running out of
164 memory, stack, alien stack, binding stack, encountering a memory
165 fault, etc. In the absence of --lose-on-corruption a warning is
167 * enhancement: detect binding stack exhaustion
168 * enhancement: detect alien stack exhaustion on x86/x86-64
169 * improvement: generally more stable and reliable interrupt handling
170 * improvement: there is a per thread interruption queue,
171 interruptions are executed in order of arrival
172 * improvement: a repeating timer reschedules itself when the it has
173 finished, but expiration times are spaced equally. If an
174 expiration time is in the past it will trigger after a short grace
175 period that may give a chance to other things to run.
176 * optimization: slightly faster gc on multithreaded builds
177 * optimization: faster WITHOUT-GCING
178 * bug fix: when JOIN-THREAD signals an error, do it when not holding
179 important locks so that the debugger/handler doesn't produce
180 recursive errors or deadlock.
181 * bug fix: real-time signals are not used anymore, so no more
182 hanging when the system wide real-time signal queue gets full.
183 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
185 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
186 * bug fix: fix random memory faults related to interrupts on alpha
187 * bug fix: fix random memory faults related to interrupts on sparc
188 * bug fix: fix deadlocks related to starting threads
189 * bug fix: fix deadlines on locks on futex platforms
190 * bug fix: restore errno in signal handlers
191 * bug fix: fix deadlocks related to hash tables
192 * bug fix: fix deadlocks in pcl
194 changes in sbcl-1.0.25 relative to 1.0.24:
195 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
196 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
197 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
198 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
199 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
200 better name and does not return values so stale on multiprocessor systems.
201 Also, HOLDING-MUTEX-P was added for about the only sane usage of
203 * improvement: unithread builds keep track of MUTEX-VALUE.
204 * improvement: reading from a TWO-WAY-STREAM does not touch the output
205 stream anymore making it thread safe to have a concurrent reader and
206 a writer, for instance, in a pipe.
207 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
208 arguments, making compiler-macros for SETF-functions able to inspect
209 their constant arguments.
210 * improvement: COMPILE-FILE reports times with millisecond accuracy
211 (thanks to Luis Oliveira)
212 * optimization: CHAR-CODE type derivation has been improved, making
213 TYPEP elimination on subtypes of CHARACTER work better. (reported
214 by Tobias Rittweiler, patch by Paul Khuong)
215 * bug fix: setting alien structure fields of type struct by value now
216 computes the right offset for the memory copy.
217 * bug fix: compilation problem involving inlined calls to aliens with
218 result type VOID. (reported by Ken Olum)
219 * bug fix: #235a; sequential inline expasion in different policies no
220 longer reuses the functional from the previous expansion site.
221 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
222 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
223 * bug fix: named ENUMs in multiply-referenced alien record types no longer
224 cause an implied type redefinition. Regression from 1.0.21.29.
225 * bug fix: sign-extension of small signed return values now works with C
226 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
227 * improvements to the Windows port:
228 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
229 Westfold, thanks to Rudi Schlatte)
231 changes in sbcl-1.0.24 relative to 1.0.23:
232 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
233 vector of a multidimensional SIMPLE-ARRAY.
234 * new feature: the system now signals a continuable error if standard
235 readtable modification is attempted. (thanks to Tobias Rittweiler)
236 * new feature: DIRECTORY has been extended with a non-standard keyword
237 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
238 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
239 has been robustified and documented better. (thanks to Robert Goldman)
240 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
241 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
242 * tradeoff: constant FORMAT control strings are now compiled unless
243 SPACE > SPEED (previously only when SPEED > SPACE.)
244 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
246 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
248 * bug fix: lexical type declarations are now correctly reported by
249 SB-CLTL2. (reported by Larry D'Anna)
250 * bug fix: STRING-TO-OCTETS did not handle :START properly when
251 using UTF-8 as external format. (thanks to Luis Oliveira)
252 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
253 are signalled correctly. (thanks to Stas Boukarev)
254 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
255 designator. (thanks to Tobias Rittweiler)
256 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
257 designator, and returns T instead of the function. (thanks to
259 * bug fix: direct superclasses of STANDARD-CLASS and
260 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
261 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
262 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
263 when no class with the named slot yet exists no longer causes a
264 compile-time style-warning.
265 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
266 in safe code. (reported by Didier Verna)
267 * bug fix: #430; nested structure constructors can stack allocate.
268 * bug fix: on some 64-bit platforms dynamic space size was truncated
269 to #xffff0000 bytes. (reported by Benjamin Lambert)
270 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
271 REPL unusable. (reported by Daniel Herring)
272 * bug fix: return values of READ-SEQUENCE did not take :START into
273 account on file streams, regressions since 1.0.12.22. (reported by
274 Thomas Russ, patch by Paul Khuong)
275 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
276 method specializer used to confuse permuation vector optimization.
277 * bug fix: system inserted bogus implicit type declarations for local
278 special variables in DEFMETHOD bodies.
279 * bug fix: #354; duplicated frames in backtraces due to
280 non-tail-call-optimized XEPs to functions with return type NIL
282 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
283 initializes structure object slots according to DEFSTRUCT initforms,
284 and DEFSTRUCT forms :INCLUDEind structure classes defined using
285 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
286 (reported by Bruno Haible and Stephen Wilson)
287 * bug fix: #395; fill-pointer output streams used now support
288 element-type BASE-CHAR as well.
289 * bug fix: compiler error when attempting to derive return value of
290 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
292 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
294 * bug fix: Mac OS X binaries should now be portable between Leopard
297 changes in sbcl-1.0.23 relative to 1.0.22:
298 * enhancement: when disassembling method functions, disassembly
299 for the associated fast function is also produced.
300 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
302 * optimization: printing with *PRINT-PRETTY* true is now more
303 efficient as long as the object being printed doesn't require
304 special handling by the pretty printer.
305 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
306 now interact correctly with type declarations.
307 * partial bug fix: PCL detects infinite recursion during wrapper
308 validation. (thanks to Attila Lendvai)
309 * bug fix: #426; nested function calls are inlined properly.
310 Previously if FOO was an inline function, in calls of the form
311 (FOO (FOO ...)) the outer call was not inlined.
312 * bug fix: long long arguments passed in registers to alien
313 functions on PowerPC Linux and NetBSD are now handled correctly
314 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
316 changes in sbcl-1.0.22 relative to 1.0.21:
317 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
318 for the shared object in the current directory, but passes the native
319 namestring of the designated pathname to the operation system's shared
320 object loading function as-it.
321 * minor incompatible change: --disable-debugger toplevel option now takes
322 effect before processing of initialization files and --eval or --load
324 * new feature: new commandline argument: --script, which supports
325 shebang lines. See documentation for details. (based on work by
327 * new feature: SAVE-LISP-AND-DIE can save current values of
328 --dynamic-space-size and --control-stack-size in the executable core,
329 causing it to skip normal runtime option processing. See documentation
330 for details. (thanks to Zach Beane)
331 * enhancement: inoccous calls to EVAL or generic functions dispatching
332 on subclasses of eg. STREAM no longer cause compiler notes to appear.
333 * enhancement: the system no longer resignals errors from --load and
334 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
335 associated with the original error to be lost. (thanks to Ariel
337 * enhancement: :DONT-SAVE keyword argument has been added to
338 LOAD-SHARED-OBJECT for controlling interaction with
339 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
340 the effects of an earlier LOAD-SHARED-OBJECT call.
341 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
342 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
343 provided. (reported by Cedric St-Jean)
344 * bug fix: circularity handling in the reader did not treat raw
345 structure slots correctly. (reported by Cedric St-Jean)
346 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
347 file descriptors when there were none.
348 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
349 was broken. (reporteed by Willem Broekema)
350 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
351 pathnames without a directory.
352 * bug fix: COMPILE-FILE did not warn about undefined variable
353 references at toplevel, and LOAD of the resulting fasl did
355 * bug fix: functions with non-required arguments used to end up with
356 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
357 * bug fix: redefining a function with non-required arguments didn't
358 update the system's knowledge about its call signature properly.
359 * bug fix: fixed #431; incompatible alien record type redefinitions
360 are detected and handled. (reported by Neil Haven)
361 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
362 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
364 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
365 after alien stack frames.
366 * bug fix: strings passed to mk{s,d}temp lacked null termination
368 changes in sbcl-1.0.21 relative to 1.0.20:
369 * new feature: the compiler is able to track the effective type of a
370 generic function across method addition and removal.
371 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
372 appropriately typed structure slots without locking.
373 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
374 information like those gathered by TIME using a programming-friendly
376 * new feature: TIME reports time taken even if the form performs a
377 non-local transfer of control.
378 * enhancement: reduced conservativism on GENCGC platforms: on
379 average 45% less pages pinned (measured from SBCL self build).
380 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
381 mutate constant symbols or violate declaimed type of the symbol.
382 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
383 sleeping on the semaphore in heavily contested semaphores.
384 * bug fix: semaphores and condition variables were not interrupt
386 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
387 owned by other threads anymore.
388 * bug fix: FIND on lists called KEY outside the specified
389 subsequence. (reported by budden)
390 * bug fix: LOG doesn't use single-float intermediate results when
391 given mixed integer and double-float arguments, leading to better
392 precision. (reported by Bob Felts)
393 * bug fix: LOG with base zero returned values of inconsistent type.
395 changes in sbcl-1.0.20 relative to 1.0.19:
396 * minor incompatible change: OPTIMIZE qualities
397 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
398 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
399 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
400 * documentation: some slot access efficiency guidelines have been
401 added to the user manual.
402 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
403 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
404 as ASSOC and MEMEBER.
405 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
406 to more efficient EQ-comparison versions more often.
407 * optimization: enhanced derivation of DOLIST iteration variable type
409 * optimization: constant folding of simple (LIST ...) forms as DOLIST
411 * optimization: runtime lookup of function definitions can be
412 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
413 * optimization: compiler is able to derive the return type of
414 (AREF (THE STRING X) Y) as being CHARACTER.
415 * optimization: CLRHASH on empty hash-tables no longer does pointless
416 work. (thanks to Alec Berryman)
417 * optimization: REPLACE deftransforms don't punt when :START1 or
419 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
420 no longer emits a code deletion note. (reported by Andrew
422 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
423 functions with an odd number of &OPTIONAL arguments, a &REST
424 argument, and one or more &KEY arguments at the call site.
425 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
426 arguments appeared at call sites as well.
427 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
428 READ-LINE &co can no longer read from them afterwards. (reported
430 * bug fix: fixed #427: unused local aliens no longer cause compiler
431 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
433 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
434 alien-stack leakage. (reported by Andy Hefner)
435 * bug fix: PROGV signals an error when an attempt to violate declared
436 type of a variable or bind a constant is made.
437 * bug fix: SET signals an error when an attempt to violate declared
438 type of a variable is made.
439 * bug fix: restart computation during the execution of a restart
440 test function no longer causes infinite recursion. (reported by
442 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
443 signals an error. (thanks to Pierre Mai)
444 * bug fix: EXPORT left symbol unexported in conflict situations.
445 (thanks to Michael Weber)
446 * bug fix: correctly handle name conflicts involving CL:NIL.
447 (thanks to Michael Weber)
448 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
449 conflicts arising from USEing package with conflicting symbols
450 correctly. (thanks to Michael Weber)
452 changes in sbcl-1.0.19 relative to 1.0.18:
453 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
454 warnings that go otherwise unhandled will be muffled if they are
455 of the type that's the value of this variable.
456 * optimization: stack allocation is slightly more efficient on x86
458 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
459 where a raw slot always is initialized using the initform whose
460 type is not know sufficiently well a compile-time are now compiled
461 correctly. (reported by John Morrison)
462 * bug fix: compiler no longer makes erronous assumptions in the
463 presence of non-foldable SATISFIES types.
464 * bug fix: stack analysis missed cleanups of dynamic-extent
465 arguments in non-let-converted calls to local functions.
466 * improvements to the Windows port:
467 ** adjusted address spaces for building on both Win32 and
468 Win64. (thanks for John Connors)
469 * fixed some bugs revealed by Paul Dietz' test suite:
470 ** interval arithmetic during type derivation used inexact integer
471 to single-float coercions.
472 ** arithmetic operations involving large integers and single
473 floats give the same results in compiled and interpreted code.
474 ** deriving the result type of COERCE no longer signals an error
475 if the derived type of the second argument is a MEMBER type
476 containing invalid type specifiers.
477 ** ADJOIN with constant NIL as second argument works correctly.
478 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
480 changes in sbcl-1.0.18 relative to 1.0.17:
481 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
482 profiles only the current thread.
483 * minor incompatible change: changes to SYMBOL-VALUE of constants
484 defined with DEFCONSTANT now signal an error.
485 * enhancement: SB-SPROF now has support for wallclock profiling,
486 and is also able to profile specific threads. REPORT output
487 has also additional sorting options.
488 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
490 * optimization: structure allocation has been improved
491 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
492 ** out of line constructors are ~10% faster.
493 ** inline constructors are ~15% faster.
494 ** inline constructors are capable of dynamic extent allocation
495 (generally on x86 and x86-64, in some cases on other platforms
497 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
499 * optimization: file compiler is now able to coalesce non-circular
500 lists, non-base strings, and bit-vectors. Additionally, constants
501 are never referenced through SYMBOL-VALUE at runtime.
502 * optimization: code defining methods on PRINT-OBJECT (and other
503 generic functions in the COMMON-LISP package) now loads faster.
504 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
506 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
507 fasl is now deleted. (reported by Attila Lendvai)
508 * bug fix: READ-LINE always returned NIL for the last line in files.
509 (reported by Yoshinori Tahara)
510 * bug fix: more accurate disassembly annotations of foreign function
511 calls. (thanks to Andy Hefner)
512 * bug fix: trimming non-simple strings and non-string string
513 designators when the there is nothing to trim works properly.
514 (thanks to James Knight)
515 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
516 (thanks to Travis Cross)
517 * fixed some bugs revealed by Paul Dietz' test suite:
518 ** NIL is a valid function name (regression at 1.0.13.38)
519 ** FILL on lists was missing its return value (regression at 1.0.12.27)
520 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
521 fill pointers properly (regression at 1.0.12.23)
522 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
523 displacement indices properly (regression at 1.0.12.23)
525 changes in sbcl-1.0.17 relative to 1.0.16:
526 * temporary regression: user code can no longer allocate closure
527 variable storage on stack, due to bug 419 without explicitly
528 requesting it. Please consult sbcl-devel for advice if you need to
529 use this feature in the meanwhile.
530 * new feature: runtime argument --control-stack-size can be used to
531 adjust thread default control stack size.
532 * enhancement: improved TIME output
533 ** all times are reported using the measured accuracy (milliseconds
534 for real and GC times, microseconds for everything else.)
535 ** processor cycle counts on x86 and x86-64.
536 ** interpreted forms are counted for both evaluator modes.
537 ** number of lambdas converted by the compiler is reported.
538 ** CPU percentage report (computed from real and total run time.)
539 ** more comprehensive run time reporting, using a condenced format
540 ** interperted form, lambda, and page fault counts are omitted
542 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
544 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
545 * optimization: two argument forms of LAST are upto ~10% faster
546 in normal SPEED policies.
547 * optimization: NCONC no longer needs to heap cons its &REST list
548 in normal SPEED policies.
549 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
551 * bug fix: UNION and NUNION work with :TEST-NOT once more,
552 regression since 1.0.9.1. (thanks to Eric Marsden)
553 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
554 since 1.0.15.36. (thanks to Paul Khuong)
555 * bug fix: LAST when always returned the whole list when given a bignum
556 as the second argument.
557 * bug fix: dynamic extent allocation of nested lists and vectors
558 could leak to otherwise accessible parts.
559 * bug fix: invalid optimization of heap-allocated alien variable
561 * bug fix: fasl header checking is less vulnerable to different
562 platform word lengths.
563 * bug fix: more correct assembler syntax for GNU binutils
564 2.18.50.0.4 support. (thanks to Marijn Schouten)
565 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
567 * bug fix: the fopcompiler can handle LOCALLY forms (with no
568 declarations) successfully. (reported by Attila Lendvai)
570 changes in sbcl-1.0.16 relative to 1.0.15:
571 * minor incompatible change: revert the changes to sb-posix's error
572 signaling added in 1.0.14.
573 * minor incompatible change: change PROBE-FILE back to returning
574 NIL whenever we can't get a truename, as was the case before 1.0.14.
575 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
576 inherits from ERROR instead of just CONDITION.
577 * new feature: SB-INTROSPECT can provide source locations for instances
578 as well. (thanks to Tobias Rittweiler)
579 * optimization: binding special variables now generates smaller code
580 on threaded platforms.
581 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
582 and cases where no :TEST is given but the compiler can infer that
583 the element to search is of type (OR FIXNUM (NOT NUMBER)).
584 * optimization: better LOGNOT on fixnums.
585 * optimization: modular arithmetic for a particular requested width
586 is implemented using a tagged representation unless a better
587 representation is available.
588 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
589 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
590 for wellformedness and returns a specialized vector. (reported by
591 Francois-Rene Rideau)
592 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
593 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
594 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
595 unscheduling timer at the same time as another timer fires.
596 * bug fix: don't reschedule timers for dead threads.
597 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
598 * bug fix: copying output from RUN-PROGRAM to a stream signalled
599 bogus errors if select() was interrupted.
600 * enhancement: add support for fcntl's struct flock to SB-POSIX.
602 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
603 * enhancement: cleaner backtraces for interactive interrupts, as
604 well as other cases where the interesting frames used to be
605 obscured by interrupt handling frames.
606 * enhancement: untracing a whole package using (UNTRACE "FOO") is
607 now supported, and tracing a whole package using (TRACE "FOO") now
608 traces SETF-functions as well.
609 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
610 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
611 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
612 * unreadably printed representation of hash-tables now includes
614 * bug fix: partially fixed #188: type propagation from assignments
615 is now more efficient.
616 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
617 'DOUBLE-FLOAT) are not flushable.
618 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
619 full address of the object, and none of the tag bits.
620 * bug fix: readably printing hash-tables now respects other printer
621 control variables. (reported by Cedric St-Jean)
622 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
623 keyword with MAKE-HASH-TABLE.
624 * bug fix: export SB-POSIX:MKSTEMP.
625 * bug fix: SORT was not interrupt safe.
626 * bug fix: XREF accounts for the last node of each basic-block as
628 * bug fix: MAKE-INSTANCE optimizations interacted badly with
629 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
630 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
631 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
632 create obsolete instances in the case of redefinition or
633 obsoletion of a superclass. (thanks to Andy Hefner)
634 * bug fix: Support for the Alpha architecture has been revived; it had
635 suffered somewhat from lack of maintenance since sbcl-1.0.
636 * improvements to the Windows port:
637 ** The system detects the codepage to use at startup, instead of
638 using the value from the saved core. (thanks to Kei Suzuki)
640 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
641 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
642 (see documentation for details.)
643 * revived support for OpenBSD (contributed by Josh Elsasser)
644 * partially fixed bug #108: ROOM no longer suffers from occasional
645 (AVER (SAP= CURRENT END)) failures.
646 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
647 bodies no longer cause a WARNING to be signalled. (reported by
649 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
650 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
651 the bug in TRUNCATE.) (reported by Michael Weber)
652 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
653 no samples. (reported by Andy Hefner)
654 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
655 no longer appear as (NIL ...) frames in backtraces.
656 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
657 is now actually exported from SB-EXT as documented. (reported by
659 * bug fix: sb-aclrepl now correctly understands how to inspect
660 single-floats on 64-bit platforms where single-floats are not boxed.
661 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
662 yet been finalized. (reported by Levente Meszaros)
663 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
664 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
665 SBCL-specific optimize qualities.
667 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
668 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
669 an executable in the search path, and does so in the child
670 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
671 been removed; it can be found in the CVS history, for somebody who
672 needs that search behavior (see the manual).
673 * minor incompatible change: compiler policy re. weakening type
674 checks has changed: now type checks are weakened only if SAFETY < 2
676 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
677 unparsing of directory pathnames as files. Analogously,
678 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
679 filename to parse into a directory pathname.
680 * enhancement: implicit generic function creation now signals a
681 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
682 users can bind handlers for and muffle around calls to LOAD.
683 * enhancement: RUN-PROGRAM allows unicode arguments and environments
684 to be used (using the default stream external format), and allows
685 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
686 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
687 strings and vectors whose element-type or simplicity is not fully
688 known at compile-time.
689 * optimization: STRING-TRIM and related functions no longer allocate
690 a new string when no trimming needs to be performed. These functions
691 are also faster than before when the input string has been declared
693 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
694 * optimization: READ-LINE is significantly faster for files containing
696 * optimization: non-open coded uses of character comparison operators
697 (e.g. char=) no longer cons when called with more than one parameter
698 on platforms supporting dynamic-extent allocation.
699 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
700 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
701 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
703 * bug fix: some sequence functions elided bounds checking when
705 * bug fix: too liberal weakening of union-type checks when SPEED >
707 * bug fix: more bogus fixnum declarations in ROOM implementation
710 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
711 * new feature: MAKE-HASH-TABLE now experimentally accepts a
712 :SYNCHRONIZED argument, which makes the hash-table safe for
713 concurrent accesses (but not iteration.) See also:
714 SB-EXT:WITH-LOCKED-HASH-TABLE, and
715 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
716 * optimization: CONCATENATE on strings is an order of magnitude faster
717 in code compiled with (> SPEED SPACE).
718 * optimization: SUBSEQ is ~50% faster on lists.
719 * bug fix: bug 417 fixed -- source location reporting is now more robust.
720 * bug fix: SUBSEQ on a list will now correctly signal an error if if
721 END is smaller then START.
722 * bug fix: SB-PROFILE will no longer report extra consing for nested
723 calls to profiled functions.
724 * bug fix: ROOM implementation had bogus fixnum declarations which
725 could cause type-errors when calling ROOM on large images.
726 * bug fix: if file compilation is aborted, the partial fasl is now
727 deleted, and COMPILE-FILE returns NIL as the primary value.
728 * bug fix: number of thread safety issues relating to SBCL's internal
729 hash-table usage have been fixed.
730 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
731 be returned from its body when the values were being returned
732 using unknown-values return convection and the W-P-O was wrapped
733 inside an UNWIND-PROTECT.
734 * bug fix: sb-posix should now compile again under Windows, enabling
737 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
738 * incompatible change: hash-table accessor functions are no longer
739 automatically protected by locks. Concurrent accesses on the same hash-table
740 from multiple threads can give inconsistent results or even corrupt the
741 hash-table completely. Multi-threaded applications should do their own
742 locking at the correct granularity. In the current implementation it is
743 still safe to have multiple readers access the same table, but it's not
744 guaranteed that this property will be maintained in future releases.
745 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
746 and will signal an error at runtime.
747 * enhancement: SB-THREAD package now exports a semaphore interface.
748 * enhancement: CONS can now stack-allocate on x86 and
749 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
751 * enhancement: nested lists can now be stack allocated on
752 platforms providing stack allocation support.
753 * enhancement: dynamic-extent support has been extended to support
754 cases where there are multiple possible sources for the stack
756 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
757 if the mutex is uncontested on Linux.
758 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
759 as specified by the CLHS. (thanks to Tobias Rittweiler)
760 * bug fix: NaN comparison now works on x86-64.
761 * bug fix: CLOSE :ABORT T on a stream with pending output now
763 * bug fix: instances of non-standard metaclasses using standard
764 instance structure protocol sometimes missed the slot type checks
766 * bug fix: known functions can be inlined in high-debug code.
768 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
769 * minor incompatible change: the MSI installer on Windows no longer
770 associates .lisp and .fasl files with the installed SBCL.
771 * minor incompatible change: :UNIX is no longer present in *FEATURES*
772 on Windows. (thanks to Luis Oliviera)
773 * new feature: SB-CLTL2 contrib module now implements
774 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
775 * optimization: scavenging weak pointers is now more efficient,
776 requiring O(1) instead of O(N) per weak pointer to identify
777 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
778 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
779 method bodies using constant slot-names when the first argument is
780 a specializer parameter for the method.
781 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
782 names, when the class of the instance is a direct instance
783 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
784 as slow as the constant slot-name case.)
785 * optimization: member type construction is now O(N) instead
787 * optimization: UNION and NUNION are now O(N+M) for large
788 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
790 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
791 now more readable in environments like Slime which display it.
792 (thanks to Tobias C. Rittweiler)
793 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
794 was able to infer the correct argument type for the object on which
795 the CAS operation was being performed.
796 * bug fix: copy propagation interfered with parallel assignment
797 semantics in local calls. (reported by Paul Khuong)
798 * bug fix: the signed modular fixnum shift compiled to wrong code on
799 x86 and x86-64. (spotted by a slight modification to some of
802 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
803 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
804 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
805 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
807 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
808 and generic function now print the object identity for anonymous
809 instances. (thanks to Attila Lendvai)
810 * enhancement: as an extension to MOP, SBCL now supports SETF of
811 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
812 (thanks to Attila Lendvai)
813 * enhancement: sb-cover has an alternate annotation mode which puts
814 the form annotations at the car of the form, instead of annotating
815 it completely. The benefit of this mode is that it shows better
816 which forms were instrumented by the compiler.
817 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
818 by printer control variables. (reported by Dan Corkill)
819 * bug fix: system leaked memory when delayed output was performed by
820 the OS in smaller chunks then expected. (thanks to David Smith)
821 * bug fix: system leaked memory when file streams were not closed
823 * bug fix: large objects written to slow streams that were modified
824 after the write could end up with the modified state written to
825 the underlying file descriptor.
826 * bug fix: multiple threads operating in parallel on the same stream
827 could cause buffer-overflows.
828 * bug fix: source location information is stored correctly
829 (broken since 1.0.6). This bug would generally show up as the
830 Slime debugger highlighting the wrong form when the sldb-show-source
832 * bug fix: Branch forms are again annotated as branches in the sb-cover
834 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
835 on x86-64. (reported by Gregory Vanuxem)
836 * bug fix: EQUALP could return wrong results for structures with raw
837 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
838 word). (reported by Vjacheslav Fyodorov)
839 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
842 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
843 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
844 atomic compare-and-swap operations on threaded platforms.
845 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
846 allows assigning a global minimum value to optimization qualities
847 (overriding proclamations and declarations).
848 * enhancement: closed over variables can be stack-allocated on x86
850 * performance bug fix: GETHASH and (SETF GETHASH) are once again
852 * optimization: slot definition lookup is now O(1). This speeds up
853 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
854 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
855 * optimization: ASSOC and MEMBER can now be open-coded for all
856 combinations of keyword arguments when second argument is constant
857 and SPEED >= SPACE. In other cases a specialized version is
859 * bug fix: using obsoleted structure instances with TYPEP and
860 generic functions now signals a sensible error.
861 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
862 (reported by Kristoffer Kvello)
863 * bug fix: backtrace construction is now more careful when making
864 lisp-objects from pointers on the stack, to avoid creating bogus
865 objects that can be seen by the GC.
866 * bug fix: defaulting of values in contexts expecting more than 7
867 variables now works on x86-64. (reported by Christopher Laux)
868 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
870 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
871 as the property-list of a symbol.
872 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
873 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
874 situations requested, are once again file-compileable. (reported
877 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
878 * MOP improvement: support for user-defined subclasses of
879 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
880 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
881 the expansion of DEFMETHOD, is responsible for generating a form
882 which creates a list of specializers when evaluated. Additional
883 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
884 debugging and introspective support.
885 * minor incompatible change: the (unsupported) spinlock interface
886 has changed: free spinlock now has the value NIL, and a held spinlock
887 has the owning thread as its value.
888 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
889 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
891 * enhancement: name of a socket-stream is now "a socket" instead of
893 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
894 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
895 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
896 for generic functions. (Thanks to Tobias C. Rittweiler)
897 * optimization: bignum printing speed has been improved by 20-40%
898 (depending on the bignum size.)
899 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
901 * bug fix: the cache used by the CLOS to store precomputed effective
902 methods, slot offsets, and constant return values is now thread and
904 * bug fix: generic function dispatch function updating is now thread
905 and interrupt safe (in the sense that the known issues have been
907 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
908 * bug fix: interning EQL-specializers is now thread and interrupt safe.
909 * bug fix: asdf systems with dependencies to the SB-POSIX or
910 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
911 * bug fix: interrupt safety of applicable method computation has been
914 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
915 * new contrib: sb-cover, an experimental code coverage tool, is included
917 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
918 significantly faster.
919 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
920 produce more efficient code on x86-64 if the compiler can determine
921 that (+ INDEX <constant>) does not require a bounds check and FOO
922 has an element type at least 8 bits wide.
923 * enhancement: a new, experimental synchronous timeout facility is
924 provided. Refer to SB-SYS:WITH-DEADLINE for details.
925 * enhancement: when a symbol name conflict error arises, the
926 conflicting symbols are always printed with a package prefix.
927 (thanks to Kevin Reid)
928 * enhancement: stepping is now once again supported on the SPARC and
929 MIPS platforms. (It is also now more likely to work on CheneyGC
931 * enhancement: sb-sprof can now also track and report accurate call
933 * bug fixes: the treatment of non-standard subclasses of
934 SB-MOP:SPECIALIZER is more correct.
935 * incompatible change: PURIFY no longer copies the data from the
936 dynamic space into the static and read-only spaces on platforms
937 that use the generational garbage collector
938 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
940 * bug fix: GC race condition occasionally resulting in crashes with
941 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
943 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
945 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
946 a STYLE-WARNING to be signalled (regression from 1.0.4.)
947 * bug fix: an asynchronous interrupt could previously leave the
948 system running with GC inhibited.
949 * bug fix: a DECLARE form evaluated at top-level now causes an error
950 rather than silently (or verbosely) returning NIL.
951 * bug fix: trying to dissassemble functions compiled at high DEBUG could
952 result in a error being signalled due to source form lookup errors.
953 (reported by Peter Graves)
955 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
956 * incompatible change: removed writer methods for host-ent-name,
957 host-ent-addresses -- changing the values did not update the DNS
959 * minor incompatible change: changed experimental JOIN-THREAD interface
960 * documentation: the manual now lists reader and writer methods
961 in class slot documentation sections. (thanks to Richard M Kreuter)
962 * documentation: unwinding from asyncronous events has been
963 documented as unsafe.
964 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
965 in multithreaded application code.
966 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
967 platforms. (thanks to James Anderson for the optimization hint)
968 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
970 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
971 variants no longer cons.
972 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
973 their NOT- variants no longer cons.
974 * optimization: EQUAL hash tables no longer use SXHASH for objects
975 of all data types, but instead use an EQL hash for types for which
976 EQUAL is the same as EQL.
977 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
978 are significantly faster.
979 * optimization: new STRING-OUTPUT-STREAM implementation is much
980 faster for large outputs and conses 30% less on average.
981 * enhancement: XREF information is now collected for references made
982 to global variables using SYMBOL-VALUE and a constant argument.
983 * enhancement: SIGINT now causes a specific condition
984 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
985 * bug fix: FILE-POSITION used to signal an error in some cases where
986 ANSI requires it to return NIL.
987 * bug fix: ADJUST-ARRAY is now interrupt-safe.
988 * bug fix: adding and removing fd-handlers is now interrupt-safe.
989 * bug fix: inlined calls to C now ensure 16byte stack alignment on
991 * bug fix: bad type declaration in the CLOS implementation has
992 been fixed. (reported by James Anderson)
993 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
994 (thanks to Lutz Euler)
995 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
996 required by the CLHS. (reported by Samium Gromoff)
997 * bug fix: dead unbound variable references now signal an error.
998 (reported by Marco Monteiro)
999 * bug fix: / with an unused value was being deleted in safe code.
1000 (thanks to Marco Monteiro and Kevin Reid)
1001 * bug fix: number of characters that can be written onto a single
1002 line in a file is unlimited.
1003 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1004 been fixed by inhibiting interrupts for when GC is disabled.
1005 * bug fix: some interrupt safety issues with GETHASH, (SETF
1006 GETHASH), CLRHASH and REMHASH have been fixed.
1007 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1008 specifier no longer causes infinite recursion.
1009 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1010 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1011 * bug fix: an &environment argument with the correct variable information
1012 is passed to macros that are expanded during byte compilation.
1013 (reported by Samium Gromoff)
1014 * bug fix: a logic error was causing the hash function for bignums to
1015 have excessive amounts of collisions. (reported by Faré Rideau)
1016 * bug fix: modifying the contents of an array could change the return
1017 value of SXHASH on that array, which is only allowed for strings
1018 and bit vectors. (bug introduced in 0.9.16)
1019 * improvement: the x86-64/darwin port now passes all tests (except
1020 for the debugger tests) but should still be considered
1021 experimental until this is fixed.
1022 * improvement: a style-warning is signaled for CASE (etc) clauses with
1023 duplicate keys. (thanks to Kevin Reid)
1024 * improvement: macos/x86 and macos/x86-64 now use mach exception
1025 handlers for dealing with illegal instructions (for trapping and
1026 error handling) and memory protection violations (for GC).
1028 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1029 * new platform: experimental support for x86-64/darwin (MacOS).
1030 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1031 and getnameinfo sockets functions are used instead of gethostbyaddr
1032 and gethostbyname, on platforms where the newer functions are available.
1033 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1035 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1036 don't print the startup banner, but behave as if --noinform was passed
1037 as a command line argument. (thanks to Kevin Reid)
1038 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1039 * optimization: code using alien values with undeclared types is much faster.
1040 * optimization: the compiler is now able to open code SEARCH in more cases.
1041 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1042 * bug fix: using standardized COMMON-LISP special variables as loop
1043 variables no longer signals bogus package lock violations. (reported
1045 * bug fix: declaring local loop variables to be of a range-limited type
1046 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1047 (reported by Andras Simon)
1048 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1049 bugs remain on x86-64.)
1050 * bug fix: the #= and ## reader macros now interact reasonably with
1051 funcallable instances.
1052 * bug fix: type-checks for function arguments were compiled using the
1053 compiler policy settings of the wrong lexical environment (in 1.0.2
1055 * bug fix: SHADOW accepts characters as string designators, as required
1056 by the spec (thanks to Eric Marsden)
1057 * bug fix: fixed GC safety issues when foreign functions are called with
1058 non-base strings as arguments
1059 * bug fix: more consistent error output for fatal-compiler-warnings, like
1061 * bug fix: functions with proper names were showing up as NIL in
1062 backtraces (reported by Edi Weitz, regression in 1.0.2)
1064 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1065 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1066 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1067 produce more efficient code on the x86 if the compiler can determine
1068 that (+ INDEX <constant>) does not require a bounds check and FOO
1069 has an element type at least 8 bits wide.
1070 * bug fix: references to undefined variables are handled the same way
1071 in toplevel forms as in the normal compiler
1072 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1074 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1075 (thanks to Jon Buller)
1076 * improvement: faster compilation times for complex functions
1077 * improvement: added readlink support to SB-POSIX (thanks to Richard
1080 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1081 * improvement: experimental support for mach exception handling on
1082 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1084 * improvement: support for GBK external format.
1085 (thanks to Chun Tian (binghe))
1086 * improvement: the debugger now displays variables that have been closed
1087 over, in code compiled with (DEBUG 2) or higher
1088 * improvement: support for executable cores on NetBSD (thanks to
1090 * new feature: added a RESTART-FRAME debugger command
1091 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1092 be used to provide an implementation for FILE-POSITION on Gray streams
1093 (thanks to Eric Marsden)
1094 * new feature: add syslog, openlog and closelog support to SB-POSIX
1095 (thanks to Richard Kreuter)
1096 * optimization: the function call overhead in code compiled with
1097 a high DEBUG optimization setting is significantly
1098 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1099 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1100 (thanks to Tony Martinez)
1101 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1102 evaluated once (reported by Kevin Reid)
1103 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1104 works again (thanks to Kilian Sprotte)
1105 * bug fix: an error is signaled for tagbodies with duplicate tags
1106 (thanks to Stephen Wilson)
1107 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1108 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1109 stack frames from alien callbacks.
1110 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1111 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1112 65k pages (thanks to David Woodhouse)
1113 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1115 changes in sbcl-1.0.1 relative to sbcl-1.0:
1116 * new platform: FreeBSD/x86-64, including support for threading.
1117 * new feature: the compiler stores cross-referencing information
1118 about function calls (who-calls), macroexpansion (who-macroexpands)
1119 and special variables (who-binds, who-sets, who-references) for code
1120 compiled with (< SPACE 3). This information is available through the
1121 sb-introspect contrib.
1122 * new feature: users may subclass SEQUENCE, and have instances of
1123 these classes interoperate with standard Common Lisp functions if
1124 a number of methods are defined. (This feature is experimental
1125 and the interface subject to change based on feedback from SBCL
1126 users and the general community)
1127 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1128 x86/x86-64, rather than the previous fixed depth of 8
1129 * improvement: another pthread back-end of mutex "pthread-futex".
1130 * bug fix: non-ascii command-line arguments are processed correctly
1131 (thanks to Yaroslav Kavenchuk)
1132 * bug fix: non-required arguments were not passed correctly when a method
1133 defined using DEFMETHOD was called from a mop-generated method using
1134 CALL-NEXT-METHOD (reported by Pascal Costanza)
1135 * bug fix: recursion is now permitted in accessors through
1136 SLOT-UNBOUND. (reported by Pascal Costanza)
1137 * bug fix: an error was signaled at startup if the HOME environment
1138 variable was defined, but had an empty value (reported by Peter Van Eynde)
1139 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1140 signal a PROGRAM-ERROR, not a BUG.
1141 * bug fix: SB-POSIX:READDIR works when built with large file support.
1142 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1144 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1145 for better automatic indentation support. (thanks to Matt Pillsbury)
1146 * optimization: loading generic functions no longer takes O(n^2) time,
1147 proportional to the amount of methods in the generic function
1148 (reported by Todd Sabin and Jeremy Brown)
1149 * optimization: the FIND and POSITION family of sequence functions
1150 are significantly faster on arrays whose element types have been
1152 * improvements to the Windows port:
1153 ** Intermittent heap corruption problems have been fixed. (thanks
1154 to Alastair Bridgewater)
1155 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1157 ** Lisp is able to unwind foreign exception frames from alien
1158 callbacks. (thanks to Alastair Bridgewater)
1160 changes in sbcl-1.0 relative to sbcl-0.9.18:
1161 * improvement: experimental support for threading on FreeBSD/x86.
1162 (thanks to NIIMI Satoshi)
1163 * improvement: runtime option --dynamic-space-size can be used
1164 to set the size of the dynamic space reserved on startup.
1165 * improvement: floating point modes in effect are now saved in
1166 core, and restored on startup.
1167 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1168 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1169 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1170 threads are not running after *SAVE-HOOKS* have run.
1171 * improvement: writes to CLOS instance slots are type-checked in code
1172 compiled with (SAFETY 3)
1173 * improvement: floating-point exception handling on FreeBSD (thanks to
1175 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1176 (thanks to Zach Beane)
1177 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1179 * improvement: added support for the Shift-JIS external format.
1180 (contributed by NIIMI Satoshi)
1181 * improvement: callbacks are supported on Linux/PPC. (thanks to
1183 * bug fix: compiler bug triggered by a (non-standard) VALUES
1184 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1185 * bug fix: file compiler no longer confuses validated and already
1186 dumped structurres. (reported by Kaersten Poeck)
1187 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1188 fill-pointer signals a type-error as required. (thanks to
1190 * bug fix: disassemly of funcallable instances works.
1191 * bug fix: single stepping on PPC.
1192 * bug fix: fix thread-safety problems in the type system (generally
1193 manifesting as nonsensical errors like "STRING is a bad type specifier
1194 for sequences" or "The value 1 is not of type FIXNUM")
1195 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1196 (reported by Josip Gracin)
1197 * bug fix: an error is signaled for attempts to displace arrays with
1198 incompatible element types (thanks to Mario Mommer)
1199 * bug fix: more correct handling of wide characters in debug info
1200 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1201 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1202 and don't cause extra consing
1203 * optimization: MAP and MAP-INTO are significantly faster on vectors
1204 whose elements types have been declared.
1205 * Improvements to SB-SPROF:
1206 ** Support for allocation profiling
1207 ** Reduced profiling overhead, especially for long profiling runs
1208 * Improvements to the Windows port:
1209 ** floating point exceptions are now reported correctly.
1210 ** stack exhaustion detection works partially.
1211 ** more accurate GET-INTERNAL-REAL-TIME.
1212 ** better RUN-PROGRAM behaviour in case of errors in the child
1214 ** PROBE-FILE now simplifies pathnames correctly.
1215 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1216 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1217 1st 1970 (although time timezone data will be unreliable).
1218 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1220 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1221 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1222 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1224 * bug fix: two potential GC deadlocks affecting threaded builds.
1225 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1226 returns T (reported by Anton Kazennikov)
1227 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1228 with non-variable places
1229 * bug fix: remove a race condition in the setting of
1230 funcallable-instance functions, this should make threaded CLOS
1231 code more stable against memory faults.
1232 * bug fix: corruption of specials when unbinding is interrupted by an
1233 asynchronous unwind (reported by Hannu Koivisto)
1234 * improvement: the debugger will now also display local variables that
1235 are only used once, for code compiled with a DEBUG optimization quality
1238 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1239 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1240 * incompatible change: External-format support for FFI calls. The
1241 SB-ALIEN:C-STRING no longer implies an ASCII
1242 external-format. Instead the string is subject to external-format
1243 conversion. Additionally return values of type SB-ALIEN:C-STRING
1244 are by default of type (SIMPLE-ARRAY CHARACTER), not
1245 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1246 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1247 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1248 * incompatible change: SB-EXT package no longer contains the
1249 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1250 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1252 * incompatible change: the single-stepper is no longer available
1253 on Alpha, Mips and Sparc platforms.
1254 * minor incompatible change: the direct superclasses of
1255 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1256 not (STANDARD-OBJECT FUNCTION). This makes the
1257 class-precedence-lists of GENERIC-FUNCTION and
1258 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1260 * minor incompatible change: the default stream external format on
1261 non-unicode SBCL is no longer detected from the locale, but is always
1263 * new feature: Add a version of evaluator that uses an interpreter instead
1264 of the compiler. EVAL still uses the compiler by default, to switch it
1265 to use the interpreter, set the value of the variable
1266 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1267 * minor incompatible change: the single-stepper REPL has been merged
1268 with the normal debugger (see the "Stepping" heading of the debugger help
1269 for more details). The debugger command STEP will no longer switch
1270 to the single-stepper REPL.
1271 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1272 for a type now works.
1273 * bug fix: loading of default sysinit file works. (thanks to Leonid
1275 * bug fix: better detection of circularities in the file-compiler.
1276 (reported by Marco Monteiro)
1277 * bug fix: the CL pathname functions now work with files that have
1278 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1279 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1280 systems with Unix98 pty semantics.
1281 * bug fix: ASDF-INSTALL will now work with bsd tar.
1282 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1284 * bug fix: timers expiring in dead threads no longer cause a
1285 type-error (reported by Paul "Nonny Mouse").
1286 * bug fix: thanks to more lightweight single-stepper instrumentation,
1287 code compiled with (DEBUG 3) will compile and execute significantly faster,
1288 and will have more accurate type-inferencing than before
1289 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1290 whose bindings are modified
1291 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1292 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1293 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1294 CL:SOFTWARE-VERSION with proper version
1296 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1297 * feature: implemented the READER-METHOD-CLASS and
1298 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1299 as specified by AMOP.
1300 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1302 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1303 (thanks to Lutz Euler)
1304 * optimization: hashing of general arrays and vectors has been
1305 improved. (reported by Any Fingerhut)
1306 * enhancement: SB-INTROSPECT is now able to find definitions of
1307 profiled functions. (thanks to Troels Henriksen)
1308 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1309 as well, allowing compiler-macros for SETF-functions to expand.
1310 * enhancement: step-instrumentation no longer wraps known
1311 single-value functions with multiple-value context, allowing
1312 better type inference.
1313 * fixed bug #337: use of MAKE-METHOD in method combination now works
1314 even in the presence of user-defined method classes. (reported by
1315 Bruno Haible and Pascal Costanza)
1316 * fixed bug #339(c): if there are applicable methods not part of any
1317 long-form method-combination group, call INVALID-METHOD-ERROR.
1318 (reported by Bruno Haible)
1319 * fixed bug #361: the :FUNCTION initarg in the protocol for
1320 initialization of methods can now be used to override
1321 internally-produced optimized functions. (reported by Bruno
1323 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1324 system-provided lambda expression no longer cause warnings about
1325 unbound #:|pv-table| symbols.
1326 * bug fix: improved the handling of type declarations and the
1327 detection of violations for keyword arguments with non-constant
1329 * bug fix: potentially erronous calls to PATHNAME and
1330 MERGE-PATHNAMES were being flushed in some cases.
1331 (reported by Richard Kreuter)
1332 * bug fix: compiled calls to TYPEP were mishandling obsolete
1333 instances. (reported by James Bielman and Attila Lendvai)
1334 * bug fix: format strings with ~> without matching ~< no longer
1335 trigger an AVER, but signal an understandable error instead.
1336 (reported by Antonio Martinez)
1337 * bug fix: specifying an output-file without a pathname-type for
1338 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1339 of input-file instead of "fasl". (reported by Robert Dodier)
1340 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1341 (reported by James Y Knight).
1342 * bug fix: compiler-macros-function did not consider the environment
1343 argument for shadowing by local functions.
1344 * bug fix: compiler-macros expansion was inhibited by local INLINE
1346 * bug fix: inline expansions of known functions were subject to
1347 step-instrumentation in high debug policies, leading to problems
1348 with type-inference.
1349 * bug fix: compiler failed to differentiate between different CONS
1350 types in some cases.
1351 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1352 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1353 * bug fix: #368: incorrect use of expressed vs. upgraded array
1355 * bug fix: #306a: more precise unions of array types.
1356 * thread-safety improvements:
1357 ** CONDITION-WAIT could return early on Linux, if the thread was
1358 interrupted and subsequently continued with SIGCONT.
1359 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1361 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1362 * added support for the ucs-2 external format. (contributed by Ivan
1364 * minor incompatible change: pretty printing of objects of type
1365 (cons symbol) is, in the default pprint-dispatch-table, now
1366 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1368 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1369 called later in a class's lifetime, possibly as late as when the
1370 first instance of the class is created. Previously,
1371 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1372 class became finalizeable.
1373 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1374 for multibyte external-format streams. (thanks to "vbzoli")
1375 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1376 with :ALLOCATION :CLASS inherited from superclasses of the
1378 * fixed bug: anonymous classes can now be created using the :NAME
1379 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1380 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1381 * fixed bug: core-files saved with :EXECUTABLE T can again be
1382 executed when SBCL_HOME isn't set. (reported by James Knight)
1383 * fixed bug: toplevel LOCALLY forms with declarations could
1384 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1385 * fixed bug: printing from several different threads using different
1386 values of *print-case* could cause invalid output, due to
1387 some internal special variables of the printer not being bound
1388 thread-locally (reported by Max Mikhanosha)
1389 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1390 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1391 (reported by Pascal Costanza)
1392 * fixed bug: FINALIZE-INHERITANCE is called from
1393 REINITIALIZE-INSTANCE on classes when the class has previously
1394 been finalized, as required by AMOP.
1395 * minor code generation optimizations:
1396 ** better register allocation in CLOS dispatching functions
1397 ** overflow detection when coercing signed bytes to fixnums on x86-64
1398 ** is now implemented with one IMUL instruction instead of three shifts
1399 ** more efficient bit-vector access on x86 and x86-64
1400 ** more efficient access to raw structure slots on x86 and x86-64
1401 * fixed some bugs revealed by Paul Dietz' test suite:
1402 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1403 return its argument.
1405 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1406 * feature: thread support on Solaris/x86, and experimental thread support
1408 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1410 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1411 default method for SLOT-UNBOUND.
1412 * minor incompatible change: prevent the user from specializing the
1413 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1414 somewhat counter to the intent of the protocol, I (CSR) think, and
1415 additionally it just doesn't work in SBCL as currently
1416 implemented, thanks to optimizations (that are always valid for
1417 the other three SLOT-VALUEish functions, but not for the setter).
1418 * minor incompatible change: the :SB-LDB feature is now enabled by
1419 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1420 the low-level debugger.
1421 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1422 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1423 down to an SB-SYS:FD-STREAM, allowing direct communication in
1424 more cases. Temporary files and pipes are still used as a fallback
1426 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1427 on the non-reentrant C functions localtime(3) and gmtime(3).
1428 * bug fix: global optimization policy was not visible in LOCALLY and
1430 * bug fix: class objects can be used as specializers in methods.
1431 (reported by Pascal Costanza)
1432 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1433 with a type error. (reported by blitz_ on #lisp)
1434 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1435 failed with a type error. (reported by Pascal Bourguignon)
1436 * bug fix: merging pathnames against defaults with :DIRECTORY
1437 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1438 (reported by James Y Knight)
1439 * bug fix: saving large (>2GB) cores on x86-64 now works
1440 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1441 constant index and a (simple-array (signed-byte 32)) array
1442 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1443 error (patch by Robert J. Macomber)
1444 * feature: TIME now displays the amount of run-time spent in GC
1445 * bug fix: The debugger now does a better job of respecting
1446 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1447 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1448 workaround for bug 403.)
1449 * bug fix: floating point exception handling now works on FreeBSD
1450 (thanks to NIIMI Satoshi)
1451 * fixed some bugs revealed by Paul Dietz' test suite:
1452 ** MISC.641: LET-conversion were not supposed to work in late
1454 * improvements to the Win32/x86 port:
1455 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1456 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1458 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1459 * new feature: source path information is generated for macro-expansion
1460 errors for use in IDE's like Slime (thanks to Helmut Eller)
1461 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1462 * bug fix: compiler does not loop forever on an invalid type in
1464 * improvement: compilation of most CLOS applications is significantly
1466 * optimization: added a limited bytecode compiler for simple toplevel
1467 forms, speeding up compilation and FASL loading
1468 * bug fix: the statistical profiler now properly distinguishes anonymous
1471 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1472 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1473 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1474 into subclasses of the finalized class. Now user calls to
1475 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1476 system return before any subclasses are finalized.
1477 * minor incompatible change: The reader no longer ignores errors
1478 regarding non-existent packages in #+ and #- feature tests.
1479 * new feature: command line options --no-sysinit, --no-userinit to
1480 inhibit loading the corresponding init files
1481 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1482 for sending data through UDP sockets (thanks to François-René Rideau)
1483 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1484 error is signalled instead (thanks to François-René Rideau)
1485 * minor incompatible change: Error signalling behaviour of lexical
1486 operations violating package locks has changed slightly. Refer to
1487 documentation on package locks for details.
1488 * enhancement: EVAL can process IF-expressions without resorting to the
1490 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1491 constant-folded properly due to missing out-of-line functions.
1492 (reported by Mika Pihlajamäki)
1493 * bug fix: LISTEN sometimes returned T even in cases where no data was
1494 immediately available from the stream
1495 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1496 were reversed. (reported by Levente Mészáros)
1497 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1498 when given a vector displaced to an adjustable array. (reported
1500 * bug fix: derivation of float boundaries from numbers outside the
1501 appropriate float range (reported by John Wiseman)
1502 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1504 * bug fix: precomputing cache entries for generic functions with
1505 some subclasses of specializers as yet invalid does not attempt to
1506 fill a cache line with a negative offset. (reported by Levente
1508 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1509 allow condition class objects as arguments to DOCUMENTATION and
1510 (SETF DOCUMENTATION); only find and set documentation for
1511 structure names for the STRUCTURE doc-type. (suggested by Gary
1513 * improvements to the Win32/x86 port:
1514 ** (user-homedir-pathname) and default initialization file
1515 locations now know about the user's "Documents and Settings"
1516 directory (thanks to Yaroslav Kavenchuk)
1517 ** run-program is implemented (thanks to Mike Thomas)
1518 ** sockets support (thanks to Timothy Ritchey)
1519 ** better backtrace support (thanks to Alastair Bridgewater)
1520 ** sb-grovel supported
1521 ** asdf-install and sb-posix work somewhat
1522 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1523 * improvements to the Solaris/x86 port:
1524 ** works on Solaris 11/Solaris Express
1525 ** floating-point exception handling support
1526 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1527 * fixed some bugs revealed by Paul Dietz' test suite:
1528 ** REMOVE-METHOD returns its generic function argument even when
1529 the method is not one of the generic functions' methods.
1530 ** objects declared as MEMBER types can be admissible arguments to
1531 structure accessors.
1532 ** printing characters should simply be printed by the FORMAT ~:C
1534 ** compiler failure when compiling functions with hairy constant
1535 defaults for optional parameters.
1536 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1537 function, which is already optimized.
1539 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1540 * new platform: experimental support for SBCL x86/Darwin, including
1541 MacOS X 10.4.5 on Intel.
1542 * new feature: Unicode character names are now known to the system
1543 (through CHAR-NAME and NAME-CHAR).
1544 * new feature: the filesystem location of SBCL's core file is
1545 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1546 * minor incompatible change: the contrib modules SB-POSIX and
1547 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1548 this change is to make it easier to distribute
1549 location-independent binaries.
1550 * bug fix: as implied by AMOP, standardized classes no longer have
1551 slots named by external symbols of public packages. (reported by
1553 * optimization: calling functions via constant symbols -- as in
1554 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1555 via the function object as in (FUNCALL #'FOO).
1556 * optimization: on x86 and x86-64, the calling convention for the
1557 case of dealing with an unknown number of values has been altered
1558 to be friendlier to the prediction heuristics implemented,
1559 particularly with reference to CALL and RET pairing. (thanks to
1560 Alastair Bridgewater)
1561 * optimization: on x86, the code for access to thread-local symbol
1562 values and binding/unbinding of thread-local symbols is smaller.
1563 (thanks to Alastair Bridgewater)
1564 * enhancement: CONSTANTP is now able to determine constantness of
1565 more complex forms, including calls to constant-foldable standardized
1566 functions and some special forms beyond QUOTE.
1567 * fixed bug: occasional GC crashes on Solaris/x86
1568 * optimization: x86-64 supports stack allocation of results of simple
1569 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1570 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1571 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1572 (thanks to James Knight)
1573 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1574 by the standard (thanks to Stephen Compall)
1576 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1577 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1578 be used for bundling the runtime and the core file into one
1579 executable binary. This feature is not currently supported on all SBCL
1580 platforms. (thanks to James Bielman and NIIMI Satoshi)
1581 * new feature: a generational or ephemeral garbage collector is now
1582 the default on the PowerPC platform (both Linux and Darwin). The
1583 old Cheney (stop and copy) collector is a build-time option.
1584 (thanks to Cyrus Harmon, after Raymond Toy)
1585 * minor incompatible change: the method by which SBCL finds its
1586 contributed modules has changed; it no longer relies on symbolic
1587 links from an $SBCL_HOME/systems directory, but searches directly
1588 in the subdirectories of $SBCL_HOME.
1589 * enhancement: the dynamic heap size on the Linux/PPC platform is
1590 markedly larger, even using the older Cheney garbage collector.
1591 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1592 certain complicated string types. (reported by Gary King)
1593 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1594 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1595 * fixed bug: DOCUMENTATION on structures no longer signals an
1596 error if no structure type of the right name exists. (reported by
1598 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1599 applicable non-standard primary or :AROUND method on
1600 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1601 no longer cause unbound variable errors. (reported by Kevin Reid)
1602 * fixed bug: metacircle resolution in cases where methods have slots
1603 added before the slots from STANDARD-METHOD. (reported by Jean
1605 * fixed bug: the Power PC assembly code for calling into lisp
1606 sometimes computed its return address wrongly (depending on the
1607 15th bit of the address, fixed at link time). This used to
1608 manifest itself in a segmentation violation while building PCL.
1609 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1610 many others over the years)
1611 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1612 the stack pointer (treated as a signed integer) is negative.
1613 (thanks to Peter van Eynde)
1615 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1616 * new platform: experimental support for the Windows operating
1617 system has been added. (thanks to Alastair Bridgewater)
1618 * fixed several bugs in and robustified the PPC FFI (including
1619 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1620 * bug fix: allow non-simple string symbol names (reported by Paul
1622 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1624 * bug fix: saving a core corrupted callbacks on x86/x86-64
1625 * bug fix: closed a loophole in metacircularity detection and
1626 grounding in the PCL implementation of CLOS.
1627 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1628 (reported by tomppa on #lisp)
1629 * bug fix: clear the direction flag on Lisp -> C transitions, as
1630 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1631 (reported by Andrej Grozin and Hendrik Maryns)
1632 * optimization: major improvements to GC efficiency on GENCGC platforms
1633 * optimization: faster implementation of EQUAL
1634 * optimization: emit more efficient opcodes for some common
1635 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1636 * optimization: several other minor code-generation improvements on x86-64
1637 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1639 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1640 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1641 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1642 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1643 by ANSI as a generic function, and for consistency (SETF
1644 GENERIC-FUNCTION-NAME) is treated likewise.
1645 * fixed bug #233.b: make constraint propagation notice when a variable
1646 value is changed after it is referenced but before it is used
1647 * fixed bug #296: no more arbitrary behaviour from filenames with
1648 odd characters as --load arguments. (reported by Adam Warner)
1649 * fixed bug #390: :CHARACTER-SET pathname components now work as
1650 expected. (reported by Tim Daly Jr)
1651 * fixed bug #391: complicated :TYPE intersections in slot
1652 definitions no longer cause an error in PCL internals.
1653 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1654 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1655 returning the number of octets which would be written to the
1656 file-stream. (thanks to Robert J. Macomber)
1657 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1658 arguments to the internal stream functions. (thanks to David
1660 * bug fix: stack exhaustion is now handled on the x86/SunOS
1661 platform. (thanks to Daisuke Homma)
1662 * bug fix: more accurate ROOM results on GENCGC platforms
1663 * optimization: improved type inference for arithmetic-for
1664 index variables in LOOP
1665 * optimization: faster floating-point SQRT on x86-64
1666 * fixed some bugs revealed by Paul Dietz' test suite:
1667 ** DOCUMENTATION returns NIL instead of "" for method combinations
1668 that don't have a docstring
1670 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1671 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1672 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1673 therefore are not customizeable by user code (as seems to be at
1674 least permitted and maybe required by AMOP). As a consolation,
1675 however, the SBCL implementation of these functions now calls
1676 REINITIALIZE-INSTANCE as specified by AMOP.
1677 * bug fix: slot-definition documentation is propagated as per ANSI
1678 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1679 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1680 argument, as do eslotd initialization methods. (from Pascal
1681 Costanza's "Closer" project)
1682 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1683 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1685 * bug fix: it is now possible to have more than one subclass of
1686 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1687 (reported by Bruno Haible, Pascal Costanza and others)
1688 * bug fix: the dependent update protocol now works for generic
1689 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1690 and Pascal Costanza)
1691 * bug fix: condition-class instances corresponding to
1692 DEFINE-CONDITION forms are now created eagerly. (reported by
1693 Kalle Olavi Niemitalo on comp.lang.lisp)
1694 * bug fix: floating point printing is more accurate in some
1695 circumstances. (thanks to Simon Alexander)
1696 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1697 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1698 * bug fix: callbacks on OS X now preserve stack-alignment.
1699 (thanks to Cyrus Harmon)
1700 * enhancement: the x86-64 disassembler is much better at
1701 disassembling SSE instructions. (thanks to Lutz Euler)
1702 * enhancement: CHECK-TYPE on a variable now allows type-inference
1703 (thanks to Vincent Arkesteijn)
1704 * optimization: improved performance of EUC-JP external format.
1705 (thanks to NIIMI Satoshi)
1706 * optimization: performance improvements to IO on file streams of
1707 :ELEMENT-TYPE CHARACTER
1708 * optimization: much faster memory allocation on x86-64
1709 * optimization: faster garbage collections (latency and throughput)
1711 * optimization: faster bignum subtraction and division on x86 and x86-64
1712 (thanks to Lutz Euler)
1713 * optimization: more accurate type-inference for loops that use a
1714 floating point index variable or a negative step.
1716 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1717 * bug fix: add a workaround to SBCL looping infinitely at startup on
1718 Linux kernels with apparently buggy implementations of personality().
1719 (thanks to Svein Ove Aas)
1720 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1721 (thanks to David Lichteblau)
1722 * bug fix: local bindings shadow global symbol macros for
1723 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1724 * optimization: non-open coded uses of numeric comparison operators
1725 (e.g. >) no longer cons when called with more than one parameter
1726 on platforms supporting dynamic-extent allocation.
1727 * enhancement: saving cores with foreign code loaded is now supported
1728 on MIPS/Linux in addition to the previously supported platforms.
1729 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1730 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1731 * bug fix: division by zero in sb-sprof when no samples were collected
1732 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1733 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1734 (thanks to Alexander Kjeldaas)
1735 * new feature: ignoring the return values of destructive functions
1736 like NREVERSE signals a compile-time style-warning.
1737 (thanks to Kevin Reid)
1738 * new feature: the alignment of alien structure fields can be
1739 explicitly specified. (thanks to Cyrus Harmon)
1740 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1741 and dump core on SIGQUIT
1743 ** incompatible change: threads do not inherit values of specials
1744 from their parents (see manual)
1745 ** bug fix: threads stacks belonging to dead threads are freed by the
1746 next exiting thread, no need to gc to collect thread stacks anymore
1747 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1748 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1749 ** bug fix: dynamic variable and thread start related gc lossage
1750 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1752 * fixed some bugs revealed by Paul Dietz' test suite:
1753 ** SUBTYPEP is slightly more accurate on heinously complicated
1754 CONS types where some of the members have uncertain (in the
1755 NIL, NIL sense) type relationships to each other.
1757 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1758 no longer purified unless :PURIFY T is explicitly specified.
1759 ** Non-purified cores are significantly smaller than before
1761 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1762 * new feature: timers based on Zach Beane's excellent timer package
1763 * added support for the following external formats: koi8-u,
1764 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1765 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1766 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1767 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1768 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1769 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1770 * incompatible change: a threaded SBCL will no longer revert to
1771 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1772 * bug fix: interrupts are disabled until startup is complete; no
1773 more sigsegvs when receiving a signal to soon
1774 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1776 * bug fix: add a workaround for the memory randomization features in
1777 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1778 workaround will only be in effect on systems with the proc filesystem
1780 * bug fix: printing objects of type HASH-TABLE signals a
1781 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1783 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1784 have been running for over 50 days. (reported by Gilbert Baumann)
1785 * bug fix: the logic for getting names of functions gets less
1786 confused when confronded with alternate-metaclass
1787 funcallable-instances. (reported by Cyrus Harmon)
1788 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1789 consistent, even on internal alternate-metaclass objects.
1790 * bug fix: flush closure information collected by physical
1791 environment analysis prepass before the main pass. (bug reported
1793 * bug fix: compiler pack phase does not modify a hashtable, which is
1794 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1795 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1796 may be expanded. (reported by Alexander <malishev> on c.l.l)
1797 * bug fix: no more style-warnings when compiling code using LAST
1798 under high-SPEED low-SPACE settings. (reported by David Wallin
1800 * fixed some incompatibilities between SBCL's MOP and the MOP
1802 ** the METAOBJECT class is now implemented;
1803 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1804 STANDARD-OBJECT, as required;
1805 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1806 now compatible (as required by VALIDATE-SUPERCLASS); there
1807 remains a consistency requirement over the presence or absence
1808 of the FUNCTION class in the superclass list of finalized
1809 classes; see the manual for more details;
1810 ** the :AROUND method for COMPUTE-SLOTS on
1811 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1812 requested slot ordering.
1814 ** bug fix: parent thread now can be gc'ed even with a live
1816 ** bug fix: binding a special with PROGV to no value is not
1817 the same as that symbol not having been bound (thanks to
1819 ** bug fix: binding specials is thread safe (thanks to
1821 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1822 and SB-SPROF do not die with 'no handler for signal XX in
1823 interrupt_handle_now(..)' anymore
1824 ** bug fix: WITH-TIMEOUT works with multiple running threads
1825 * fixed some bugs revealed by Paul Dietz' test suite:
1826 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1827 the :method-class keyword argument.
1829 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1830 * new port: the Solaris operating system on x86 processors is now
1831 mostly supported, though some rough edges in the environment
1832 remain. (thanks to Daisuke Homma)
1833 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1834 space for its heap. (thanks to Thiemo Seufer)
1835 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1836 closures. (thanks to Thiemo Seufer)
1837 * minor incompatible change: eof selects abort in the debugger.
1838 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1839 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1841 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1842 deprecated, and will go away in a future revision of SBCL.
1843 * minor incompatible change: GC-ON and GC-OFF are no longer
1844 implemented with a counter, it does not matter how many times gc
1845 is switched on or off
1846 * bug fix: discriminating functions for generic function classes
1847 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1848 make invalid assumptions about method precedence order. (reported
1850 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1851 platforms. (thanks to Thiemo Seufer)
1852 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1853 * bug fix: correct pathname printing with printer escaping is on.
1854 (thanks to Kevin Reid)
1855 * bug fix: complex VOP definitions in "user-space" no longer trigger
1856 package locks. (reported by Zach Beane)
1857 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1858 for funcallable-instance functions, and is no different from
1860 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1861 characters in the current readtable. (reported by Nicholas Neuss)
1862 * bug fix: SUBTYPEP on various CONS types returns more a more
1863 accurate acknowledgment of its certainty.
1864 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1865 lists in some cases. This partially fixes bug 384.
1866 * flush all standard streams before prompting in the REPL and the
1868 * bug fix: signal handling and triggering gc do not conflict
1869 directly anymore, in particular a high frequency sb-sprof does
1870 not prevent gc from running
1871 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1872 approximation for timezone and DST information between the
1873 universal time epoch and the smallest negative 32-bit time_t.
1874 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1875 year 1899 so long as the encoded time is non-negative.
1876 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1877 the correct answer for non-constant rotate amounts when performing
1878 an inline 32-bit rotation.
1880 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1881 there is only one thread in the session
1882 ** bug fix: memory leak for streams created in one thread and
1883 written to in another
1884 ** bug fix: lockup when compiled with gcc4
1885 ** bug fix: race that allows the gc to be triggered when gc is
1887 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1888 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1890 ** bug fix: finished threads are gc'ed properly
1891 * fixed some bugs revealed by Paul Dietz' test suite:
1892 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1893 has arguments with a different set of applicable methods from
1894 the orignal arguments.
1895 ** The type error thrown by MAP now has a correct expected-type
1897 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1898 name a compiled function.
1899 ** Three MISC tests where a large bignum was improperly coerced to
1900 a float that couldn't represent that bignum during type
1901 derivation were fixed.
1902 ** SUBTYPEP can now handle types involving the negation of a
1903 list-form FUNCTION type.
1904 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1905 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1906 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1908 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1909 * New feature: Experimental support for bivalent streams: streams
1910 opened with :element-type :default now allow character and binary
1911 (unsigned-byte 8) I/O
1912 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1913 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1915 * bug fix: no more highly sporadic "couldn't check whether ~S is
1916 readable" when reading a stream and an interrupt hits in the middle
1917 of a select system call
1918 * compiler better recognizes complex arrays (reported by Eduardo
1920 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1921 for variables on SBCL built with linkage-tables. (reported by Luis
1923 * various error reporting improvements.
1924 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1925 (Thanks to Thiemo Seufer)
1926 * bug fix: nested reader invokations work correctly
1927 * bug fix: it is possible to have simultaneous references to foreign
1928 code and foreign data with the same name.
1930 ** added x86-64 support
1931 ** incompatible change: the threading api now works with thread
1932 objects instead of thread ids
1933 ** bug fix: threads are protected from signals and interruption when
1934 starting up or going down
1935 ** bug fix: a race where an exiting thread could lose its stack to gc
1936 ** bug fix: don't halt on infinite error in threads if possible
1937 ** fixed numerous gc deadlocks introduced in the pthread merge
1938 ** bug fix: fixed thread safety issues in read and print
1939 ** bug fix: debugger doesn't hang on session lock if interrupted at
1940 an inappropriate moment
1941 ** bug fix: run-program is now thread safe(r)
1942 ** bug fix: inner with-recursive-lock no longer releases the mutex
1943 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1944 * fixed some bugs revealed by Paul Dietz' test suite:
1945 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1946 EXPECTED-TYPE slots filled.
1947 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1949 ** MAKE-CONDITION accepts classes as type-designators.
1950 ** COMPILE may never return NIL.
1951 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1952 range before calling Unix time functions
1954 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1955 * numerous signal handling fixes to increase stability
1956 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1957 * minor incompatible change: we now correctly canonize default
1958 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1959 as per the MOP, rather than the historical (INITARG INITFUNCTION
1960 INITFORM). (reported by Bruno Haible)
1961 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1962 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1963 for more information.
1964 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1965 pathname is a directory pathname.
1966 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1967 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1969 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1970 :METACLASS argument in addition to a class name. (reported by
1971 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1972 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1973 (reported by Bruno Haible; patch from Gerd Moellmann)
1974 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1976 * bug fix: more cleanups to the floating point exception handling on
1977 x86-64 (thanks to James Knight)
1978 * bug fix: the compiler does not try to constant fold calls of
1979 COERCE and BIT-* functions when they return freshly constructed
1980 objects. (reported by Nikodemus Siivola and Paul Dietz)
1981 * optimization: improved the MIPS versions of generic (in the
1982 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1983 * optimization: direct conversion of (unsigned-byte 32) to floats on
1984 the PowerPC platform.
1985 * optimization: structure instances with raw slots now use less
1986 memory, and probably show better memory locality. (thanks to
1988 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1989 are treated as requests for stack allocation on the x86-64,
1990 Alpha-32, PPC and SPARC platforms.
1991 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1992 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1993 (thanks to Tony Martinez)
1995 ** gcing a dead thread can no longer lead to lockups
1996 ** threads block signals until they are set up properly
1997 ** errno is no longer shared by threads
1998 ** interrupt-thread restores the eflags register on x86
1999 ** fixed some lockups due to gc/thread interaction
2000 * fixed some bugs revealed by Paul Dietz' test suite:
2001 ** invalid dotted lists no longer raise a read error when
2002 *READ-SUPPRESS* is T
2003 ** signal an error if a symbol that names a declaration is used
2004 as the name of a type, or vice versa
2005 ** allow using the (declare (typespec var*)) abbreviation for
2006 (declare (type typespec var*)) with all type specifiers
2007 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2008 ** always return NIL from PPRINT-POP when OBJECT is NIL
2009 ** don't signal errors when pretty-printing malformed LABELS,
2010 FLET or MACROLET forms
2011 ** declarations in a DOLIST body are also in scope for the
2013 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2015 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2018 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2019 * fixed cross-compiler leakages that prevented building a 32-bit
2020 target with a 64-bit host compiler.
2021 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2022 opened with :IF-EXISTS :OVERWRITE.
2023 * fixed bug 281: error for an invalid qualifier in a short-form method
2024 combination method is not signalled until the faulty method is called.
2025 * bug fix: iteration variable type inferrer failed to deal with open
2026 intervals. (reported by Alan Shields)
2027 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2028 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2029 or more runtime options were provided to the sbcl binary.
2030 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2031 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2032 * optimization: there's now a fast-path for fixnum arguments in the
2033 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2034 * optimization: the code generated on x86-64 is more compact thanks
2035 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2036 * bug fix: floating-point exception handling now partly works on
2037 x86-64. (Thanks to James Knight)
2038 * improvement to the MIPS backend from Thiemo Seufer: C-style
2039 64-bit long long arguments and return values to alien functions
2041 * fixed some bugs revealed by Paul Dietz' test suite:
2042 ** the type-error signalled from WARN has a filled-in DATUM slot.
2043 ** the type-error required when a stream is not associated with
2044 a file has the stream as its datum.
2045 ** type-errors on single-floats on x86-64 no longer have
2046 :INVALID-OBJECT as the datum
2047 ** the type-errors signalled for invalid function names now have
2048 a correct expected type
2049 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2050 for structures defined with a :TYPE. Documentation strings for
2051 typed structures are no longer immediately discarded
2052 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2053 broadcast streams and synonym streams. FILE-LENGTH now also works
2054 on broadcast streams.
2056 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2057 * incompatible change: the --noprogrammer option, deprecated since
2058 version 0.7.5, has been removed. Please use the equivalent
2059 --disable-debugger option instead.
2060 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2062 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2063 inoperational for a while now) has been completely removed.
2064 * null lexical environments are now printed as #<NULL-LEXENV>,
2065 significantly reducing the amount of clutter in typical backtraces.
2066 * documentation on weak pointers, finalization, and after GC hooks
2067 has been added to the manual.
2068 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2069 as other specialized array types, is much faster. SUBSEQ and
2070 COPY-SEQ on such arrays have also been sped up.
2071 * optimization: EQL is now more efficient when at least other argument
2072 is known to be of type (OR FIXNUM (NOT NUMBER)).
2073 * fixed bug: the runtime is now less vulnerable to changes in the
2074 size of the SBCL object on OS X, and virtual memory is reserved for
2075 all spaces that need to be at a fixed address.
2076 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2077 * fixed bug: finalizers and after GC hooks that cause consing are now
2079 * fixed bug: compiler error messages and summaries are now printed to
2080 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2081 * fixed inference of the upper bound of an iteration variable.
2082 (reported by Rajat Datta).
2083 * fixed bug 211e: calling local functions with duplicated constant
2084 keyword argument no longer causes a bogus style warning about an
2086 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2087 ftype declaration to be disregarded. (reported by Dave Roberts)
2088 * fixed bug 373: caused by erronous compilation of references to alien
2089 variables in the runtime on ppc/darwin.
2090 * fixed bug 376: CONJUGATE type deriver.
2091 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2092 (reported by Baughn on #lisp)
2093 * a cross-compiler bug on non-x86 platforms has been identified and
2094 fixed. (thanks to Bruno Haible)
2095 * improvements to the MIPS runtime code for increased stability.
2096 (thanks to Thiemo Seufer)
2097 * increased the maximimum compact environment size to allow
2098 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2099 * partial workaround for bug 135: don't name the function we're
2100 calling for hairy cases of EVAL, so as not to accumulate one environment
2101 entry per call to EVAL. (reported by Kevin Reid)
2102 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2103 * optimization: type testing for non-vector arrays should be faster.
2104 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2106 * bug fix: setting 31st element of a bit vector to zero did not work
2108 * bug fix: redefining a class definition which failed due to a
2109 previous accessor / function clash now works (but see BUGS entry
2110 #380 for more problems in this area). (thanks to Zach Beane)
2111 * the long form of DEFINE-METHOD-COMBINATION disables method group
2112 checking when given a single method group with pattern *. (thanks
2114 * on x86 compiler supports stack allocation of results of simple
2115 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2116 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2117 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2118 * fixed some bugs related to Unicode integration:
2119 ** the restarts for recovering from input and output encoding
2120 errors only appear when there is in fact such an error to
2122 * fixed some bugs revealed by Paul Dietz' test suite:
2123 ** MISC.549 and similar: late transformation of unsafe type
2124 assertions into derived types caused unexpected code
2126 ** SCALE-FLOAT type deriver is less wrong.
2127 ** type derivers for EXP, LOG and similar functions compute result
2128 types for complex arguments better.
2129 ** (MISC.563) CONJUGATE type deriver works for very restricted
2131 ** out-of-line type testers for character strings are available.
2132 ** EQUAL compiler transform understands specialness of objects
2134 ** accessing double-floats stored on the stack now works on x86-64.
2135 ** debugger internals could sometimes create invalid lispobjs,
2136 resulting in GC crashes.
2137 ** MISC.548: type check weakening can convert required type into
2139 ** initialization forms for bindings are not in scope of free special
2142 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2143 * incompatible change: thread support for non-NPTL systems has
2144 been removed - locking is buggy and unreliable. A threaded
2145 SBCL build will now warn at startup and refuse to create
2146 new threads, unless futex support is detected in the kernel
2147 * incompatible change: the top level REPL now has only an ABORT
2148 restart associated with it, not TOPLEVEL and ABORT as it used to.
2149 TOP and TOPLEVEL are now available as debugger commands for
2150 returning to the top level.
2151 * incompatible change: forms evaluated in the REPL now use the
2152 global optimization policy.
2153 * incompatible change: user- and system-initialization files are
2154 no longer processed with LOAD, but by READ and EVAL; hence the
2155 global optimization policy, startup package, readtable, etc,
2157 * The .fasl file format number has been incremented because of
2158 various incompatible changes.
2159 * internal entry point details and argument counts no longer appear
2160 in backtraces unless explicitly requested by setting
2161 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2162 * built-in and standard functions no longer have names like "top
2163 level local call to FOO".
2164 * fixed bug 32: functions defined in non-null lexical environments
2165 now have more legible printed representation
2166 * fixed bug 33: functions defined in non-null lexical environemnts
2167 are now more amenable to inspection by INSPECT.
2168 * workaround for bug 354: XEPs no longer appear in backtraces unless
2169 explicitly requested.
2170 * fixed bug: receiving the signal which results from attempting to
2171 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2172 SIGBUS on other *BSDs) on architectures where the C stack is also
2173 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2174 to debugger confusion or wild instability. (reported by Cheuksan
2176 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2177 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2178 (reported by Lutz Euler)
2179 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2180 compiled code. (reported by Paul Dietz)
2181 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2182 specialized parameter to a method to something that is not TYPEP
2183 the specializer is now possible.
2184 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2185 face of package deletion.
2186 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2187 pathname. (reported by David Tolpin on c.l.l)
2188 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2189 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2190 STRING-STREAM and FILE-STREAM, respectively.
2191 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2192 than previously; in addition, its test suite is now run on build.
2193 (thanks to Luke Gorrie)
2194 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2195 * optimization: added a immediate representation for single-floats
2197 * fixed some bugs revealed by Paul Dietz' test suite:
2198 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2199 ** attempting to create a package with a colliding nickname causes
2200 correctable errors to be signalled.
2201 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2202 ** several x86-64 backend bugs related to sign-extension of immediate
2205 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2206 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2207 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2209 * fixed loading of multiply forward-referenced layouts.
2210 (thanks to Cheuksan Wang)
2211 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2212 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2213 (see COMPILE-FILE documentation for details of :PRINT option)
2214 * fixed bugs 19 and 317: fixed-format floating point printing is
2215 more accurate. This also fixes a bug reported by Adam Warner
2216 related to the ~@F format directive.
2217 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2219 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2220 dispatch table if the from-char is a dispatch macro character.
2221 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2222 by the wordsize no longer ignore the last word. (reported by Lutz
2224 * fixed bug in type checking of dynamic-extent variables. (reported
2226 * optimization: sequence traversal functions use their freedom to
2227 coerce function designators to functions.
2228 * optimization: code with many calls to CLOS methods specialized on
2229 CLOS classes has had redundant type checks removed.
2230 * optimization: added declarations to speed up operations that access
2231 the internal character database (for example STRING-UPCASE)
2232 * optimization: comparison operations between floats and sufficiently small
2233 fixnums no longer create extra rationals
2234 * fixed some bugs related to Unicode integration:
2235 ** portions of multibyte characters at the end of buffers for
2236 character-based file input are correctly transferred to the
2237 start of the buffer at the next read.
2238 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2239 passing it through to OPEN.
2240 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2241 argument given to internal calls to OPEN.
2242 ** the built-in comment readers (introduced by character sequences
2243 ";" and "#|") are more forgiving to encoding errors; they will
2244 STYLE-WARN and then attempt to resync the stream at a character
2245 boundary. (thanks to Teemu Kalvas)
2246 * fixed some bugs in the x86-64 port:
2247 ** Negative short int return values from c-calls are sign-extended
2249 ** The stack is aligned to 16-bytes for c-calls, as required by
2250 the ABI. (thanks to Cheuksan Wang)
2251 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2252 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2253 for enums. (thanks to Vincent Arkesteijn)
2254 ** Multiple small optimizations and bugfixes for floating point
2256 * fixed some bugs revealed by Paul Dietz' test suite:
2257 ** Space, Tab, Linefeed, Return and Page have the invalid
2258 secondary constituent character trait.
2259 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2261 ** WITH-INPUT-FROM-STRING should only update the index place on
2263 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2264 works more reliably.
2265 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2266 with one-dimensional arrays with fill pointers.
2267 ** TYPE-OF failed on a complex with an integer realpart and a
2269 ** compiler failure during type inference for the code of form
2270 (IF (EQL X (THE ...)) ...) (MISC.535).
2272 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2273 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2274 platform. The port supports 61-bit fixnums, large memory spaces
2275 and reloading shared object files.
2276 * enhancement: saving cores with foreign code loaded is now
2277 supported on ppc/Darwin in addition to the previously supported
2279 * enhancement: the statistical profiler now walks deeper into the
2280 call stack for more meaningful call-graphs and accrued time
2281 reports (x86/x86-64 only). It also now reports time spent in
2283 * enhancement: it is now possible to trace most individual methods
2284 of a generic function in addition to tracing the generic function
2286 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2288 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2289 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2290 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2291 produces an error. (thanks to Vincent Arkesteijn)
2292 * bug fix: NAMESTRING on pathnames with :WILD components in their
2293 directories works correctly. (thanks to Artem V. Andreev)
2294 * fixed bug 125: compiler preserves identity of closures. (reported
2296 * bug fixed: functions with &REST arguments sometimes failed with
2297 "Undefined function" when compiled with (DEBUG 3). (reported by
2299 * bug fix: overflow during compiling of setting element of a bit
2300 vector with constant index and value. (reported by Timmy Douglas)
2301 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2302 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2303 * on x86 compiler partially supports stack allocation of dynamic-extent
2305 * GO and RETURN-FROM do not check the extent of their exit points
2306 when compiled with SAFETY 0.
2307 * fixed some bugs related to Unicode integration:
2308 ** encoding and decoding errors are now much more robustly
2309 handled; it should now be possible to recover even from invalid
2310 input or output to the terminal. (thanks to Teemu Kalvas)
2311 ** provided a first cut at implementing STRING-TO-OCTETS and
2312 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2313 ** altered the SB-MD5 contributed module slightly, changing the
2314 interface just enough for it to be supportable for builds where
2315 lisp characters are not eight bits.
2316 * fixed some bugs revealed by Paul Dietz' test suite:
2317 ** the FORMATTER-generated functions for ~V[ conditionals require
2318 the correct number of arguments.
2319 ** READ-FROM-STRING returns the mandated second value when applied
2320 to displaced strings.
2321 ** the #\Rubout and #\Backspace characters are treated as invalid
2322 constituent characters by the tokenizer.
2324 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2325 * new feature: reloading changed shared object files with
2326 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2327 * new feature: references to foreign variables and functions
2328 can now be compiled and loaded before the corresponding shared
2329 object file is loaded, as long as the foreign definitions are
2330 available at runtime.
2331 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2332 supported. (thanks to Dan Debertin)
2333 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2334 just keywords. (thanks to Vincent Arkesteijn)
2335 * fixed bug #331: structure-class instances corresponding to
2336 DEFSTRUCT forms are now created eagerly.
2337 * fixed bug #345: backtraces from calls to undefined functions work
2338 on x86 as well. Related bug #61 is now also partially fixed on x86
2339 (backtraces from throws to unknown catch tags.)
2340 * bug fix: lambda-list parsing is now stricter vrt. order and number
2341 of lambda-list keywords.
2342 * bug fix: as specified by AMOP, an error is signalled if a
2343 class-option appears multiple times in a DEFCLASS form. (reported
2345 * bug fix: RANDOM can be compiled when the compiler derives the type
2346 of its numeric argument as a disjoint set of small integers.
2347 (reported by Paul Dietz)
2348 * bug fix: starting a core saved with shared objects loaded when
2349 those objects are not available no longer causes threaded SBCL to
2350 hang. (reported by Sean Ross)
2351 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2353 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2354 argument, which must always be NIL. (reported by Kalle Niemitalo)
2355 * bug fix: printing 1.0d+23 no longer results in an error.
2356 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2357 * bug fix: structure slot setters preserve evaluation order. (thanks
2359 * fixed some bugs related to Unicode integration:
2360 ** RUN-PROGRAM can allow its child to take input from a Lisp
2361 stream. (reported by Stefan Scholl)
2362 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2363 locales. (reported by Ken Causey)
2364 * fixed some bugs revealed by Paul Dietz' test suite:
2365 ** INCF, DECF and REMF evaluate their place form as specified in
2367 ** FORMATTER expands ~{ ~} iteration directives with V or #
2368 parameters correctly.
2369 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2370 consequent uses no arguments correctly.
2371 ** the system has a partial understanding of the (COMPLEX RATIO)
2373 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2376 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2377 * new feature: a build-time option (controlled by the :SB-UNICODE
2378 keyword feature, enabled by default) for building the system with
2379 support for the entire 21-bit character space defined by the
2381 * new feature: the system now has rudimentary external-format
2382 support; the primary user-visible change at this time is that
2383 characters with the high bit set (such as lower-case-e-acute) will
2384 print correctly to a terminal in a UTF-8 environment.
2385 * minor incompatible change: BASE-CHAR no longer names a class;
2386 however, CHARACTER continues to do so, as required by ANSI.
2387 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2388 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2389 has been moved to the SB-EXT package (temporarily re-exported from
2391 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2392 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2394 * fixed bug #351: better error-handlind and reporting for malformed
2396 * fixed bug #350: bignum-printing is now more memory-efficient,
2397 allowing printing of very large bignums, eg. (expt 2 10000000).
2398 (reported by Bruno Haible)
2399 * fixed bug #302: better primitive-type selection for intersection
2401 * fixed bug #308: non-graphic characters now all have names, as
2402 required. (reported by Bruno Haible)
2403 * bug fix: redefining a class with different superclasses now correctly
2404 removes it from the direct-subclasses of its previous superclasses.
2405 (reported by David Morse)
2406 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2407 new value now works. (reported by Bruno Haible)
2408 * bug fix: correct canonicalization of multiple non-standard slot
2409 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2410 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2411 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2412 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2413 now exists, an signals an error.
2414 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2415 during macroexpansion for non-iteration variables as well. (reported
2416 by Bruno Haible for CMUCL)
2417 * bug fix: Cyclic structures and unprintable objects in compiler
2418 messages no longer cause errors. (reported by Bruno Haible)
2419 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2420 and READ-FROM-STRING all now return a primary value of NIL if
2421 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2422 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2423 (reported by Bruno Haible for CMUCL)
2424 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2425 do not designate a condition. (reported by Bruno Haible for
2427 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2428 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2429 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2430 permitting resolution in favour of any of the conflicting symbols.
2431 (reported by Bruno Haible for CMUCL)
2432 * bug fix: EQUAL compiler optimizations is less aggressive on
2433 strings which can potentially compare true despite having distinct
2434 specialized array element types.
2435 * bug fix: unit enumerations can be defined without dividing by
2436 zero. (thanks to Vincent Arkesteijn)
2437 * FORMAT compile-time argument count checking has been enhanced.
2438 (report from Bruno Haible for CMUCL)
2439 * a partial workaround for the bug 262: the compiler does not try to
2440 inline-expand a local function doing RETURN-FROM from a deleted
2441 BLOCK. (thanks to Peter Denno for the bug report and to David
2442 Wragg for the simple test case)
2443 * fixed some bugs revealed by Paul Dietz' test suite:
2444 ** RENAME-PACKAGE allows all package designators as new package
2446 ** constraint propagation and lambda variable substitution are
2447 more cautious in dealing with partially deleted code.
2448 ** compiler sometimes lost reoptimization passes.
2449 ** CERROR, given a condition as condition designator, passes its
2450 remaining arguments to the continue format control without
2452 ** Case-altering FORMAT directives work correctly on non-ASCII
2454 ** The REAL type specifier handles bounds outside the floating
2455 point ranges without signalling FLOATING-POINT-OVERFLOW.
2456 ** Functions with IR1-transformations can create intercomponent
2457 references to global functions.
2458 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2460 ** FORMAT ~R treats a nil value for its first parameter correctly.
2462 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2463 * enhancement: saving cores with foreign code loaded is now
2464 supported on x86/NetBSD and sparc/Linux in addition to the previously
2465 supported platforms.
2466 * bug fix: on some platforms repeated installations caused multiple
2467 copies of HTML documentation to be installed -- should not happen
2468 any more. (reported by Stefan Scholl)
2469 * bug fix: parsing self-recursive alien record types multiple times
2470 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2471 original patch by Helmut Eller for CMUCL)
2472 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2473 (thanks to Richard Kreuter)
2474 * bug fix: defining classes whose accessors are methods on existing
2475 generic functions in other (locked) packages no longer signals
2476 bogus package lock violations. (reported by François-René Rideau)
2477 * bug fix: special variables as DEFMETHOD parameters no longer have
2478 associated bogus type declarations. (reported by David Wragg and
2480 * bug fix: read-write consistency on streams of element-type
2481 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2482 * bug fix: redefiniton of the only method of a generic function with
2483 no DEFGENERIC no longer emits a full WARNING. In addition,
2484 redefinition of generic functions with no DEFGENERIC to an
2485 incompatible lambda list now signals an error. (thanks to Zach
2487 * bug fix: DEFGENERIC now works even when there's a function of the
2488 same name in an enclosing lexical environment. (thanks to Zach
2490 * fixed compiler failure, caused by instrumenting code during
2491 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2492 * optimization: added loop analysis and improved register allocation
2493 * fixed some bugs revealed by Paul Dietz' test suite:
2494 ** POSITION on displaced vectors with non-zero displacement
2495 returns the right answer.
2496 ** (SIMPLE-STRING) is a valid type specifier for sequence
2498 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2500 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2501 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2503 ** The justification version of the FORMAT ~< directive treats
2504 non-zero minpad parameter correctly.
2506 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2507 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2508 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2509 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2510 the supported interface.
2511 * new feature: Single-stepping of code compiled with DEBUG 2 or
2512 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2513 * new feature: saving cores with foreign code loaded is now
2514 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2515 Timothy Moore's work for CMUCL)
2516 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2517 parameters to * instead of NIL if no initform is supplied.
2518 (reported by Johan Bockgaard)
2519 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2520 correctly when FUNCALL appears as the car of the form. Note:
2521 despite this FUNCALL forms are not currently subject to
2522 compiler-macro expansion. (port of Raymond Toy's fix for the
2523 same from CMUCL, reported by Johan Bockgaard)
2524 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2525 (thanks for Teemu Kalvas)
2526 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2527 case instead of terminating the iteration (thanks for Julian
2528 Squires, Sean Champ and Raymond Toy)
2529 * bug fix: incorrect expansion of defgeneric that caused a style
2530 warning. (thanks for Zach Beane)
2531 * bug fix: slot accessor effective method computation works properly
2532 for classes with multiple non-standard applicable methods on
2533 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2534 * on x86 compiler supports stack allocation of results of LIST and
2535 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2536 CMUCL implementation by Gerd Moellmann)
2537 * fixed some bugs revealed by Paul Dietz' test suite:
2538 ** FORMAT strings with both the ~<~:;~> form of the justification
2539 directive and pretty-printing directives cause an error.
2541 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2542 * incompatible change: the internal functions
2543 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2544 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2545 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2546 instead of the old functions.
2547 * new feature: on platforms where "dladdr" is available foreign
2548 function names now appear in backtraces. (based on Helmut Eller's
2550 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2551 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2553 * documentation: ASDF manual is now distributed with SBCL.
2554 * bug fix: SBCL can now load its contributed modules with REQUIRE
2555 even if the system-provided entries have been removed from
2556 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2558 * bug fix: backtraces involving undefined functions or assembly
2559 routines are more informative. (thanks to Brian Downing)
2560 * bug fix: mutually referent alien structures now work correctly.
2561 (reported by Rick Taube)
2562 * bug fix: structures defined by WITH-ALIEN can be referred to
2563 within other definitions in the same WITH-ALIEN.
2564 * bug fix: division operators (MOD, TRUNCATE and the like) with
2565 constant zero divisors and integer dividends no longer generate
2567 * bug fix: provide default methods for INPUT-STREAM-P and
2568 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2569 * bug fix: improve the detection and resolution of MOP metacycles
2570 (where effective method computation depends on the generic function
2571 having its effective method computed). (reported by Bruno Haible)
2572 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2573 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2574 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2575 * bug fix: pathnames with relative directory components can be
2576 represented relative to default pathnames.
2577 * optimization: in taking the GCD of bignums, reduce the two bignums
2578 to approximately the same size (using Euclid's algorithm) before
2579 applying the more sophisticated binary GCD. (thanks to Juho
2581 * optimization: COUNT on bitvectors now operates word-at-a-time.
2582 * optimization: ASH with a positive, but not necessarily constant,
2583 (leftwards) shift, when in a modular context, is compiled to a
2585 * fixed some bugs revealed by Paul Dietz' test suite:
2586 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2587 if the corresponding argument is NIL.
2588 ** FORMAT directives accepting a minpad parameter treat negative
2590 ** literal commas as character parameters to FORMAT directives are
2592 ** literal spaces directly after ~<Newline> directives within a
2593 format-logical-block (~:< ~@:>) do not induce :FILL-style
2594 conditional newlines.
2595 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2596 as specified: it no longer includes conditional newlines).
2597 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2599 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2600 :PER-LINE-PREFIX argument does not evaluate to a string.
2602 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2603 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2604 the manual for details; for now, package locks can be disabled by
2605 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2606 if no major problems are found then it is likely that they will be
2607 compiled in unconditionally.
2608 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2609 unsupported operators on all platforms. To load a shared library
2610 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2611 object file, link it into a shared library outside of SBCL and
2612 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2614 * bug workaround: ROOM T and the GC were not working together
2615 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2616 reporting facility aren't preserved. That reporting has been
2617 disabled, so now until and unless someone figures out how to make it
2618 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2619 * minor incompatible change: as threatened around sbcl-0.8.0, the
2620 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2621 The symbols are also exported from SB-PCL for backwards
2622 compatibility, but more so than before SB-PCL should be treated as
2623 an implementation-internal package.
2624 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2626 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2627 It is known as of this release not to work on the Alpha, however.
2628 * fixed bug #167: errors signalled due to illegal syntax in method
2629 bodies are now more legible.
2630 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2631 designators and can hence be used with TYPEP.
2632 * fixed bug #333: CHECK-TYPE now ensures that the type error
2633 signalled, if any, has the right object to be accessed by
2634 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2635 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2636 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2638 * fixed bug #334: programmatic addition of slots using specialized
2639 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2640 and :ALLOCATION :CLASS slots.
2641 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2642 float exponents. (rereported by Peter Seibel)
2643 * fixed a bug: #\Space (and other whitespace characters) are no
2644 longer considered to be macro characters in standard syntax by
2645 GET-MACRO-CHARACTER.
2646 * fixed bug: initialization of condition class metaobjects no longer
2647 causes an instance of the condition to be created. (reported by
2649 * fixed bug: it is now possible to have slots such that
2650 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2651 description is neither :INSTANCE nor :CLASS.
2652 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2653 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2654 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2655 non-standard SLOT-DEFINITION-ALLOCATION values.
2656 * fixed bugs: various race conditions handling exiting threads.
2657 CL-PPCRE's thread torture test now passes.
2658 * fixed arguably-a-bug: GC time proportional to number of threads in
2659 system even when most of them are idle
2660 * optimization: improved performance of BIT and SBIT on bit-vectors.
2661 * .fasl file incompatibility: The fasl file version number has
2662 been incremented because of changes associated with package locks.
2664 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2665 * minor incompatible change: the system no longer provides
2666 optimization hints (conditions which are TYPEP
2667 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2668 mode; these hints are still emitted when higher SPEED optimization
2670 * new contrib module: a sampling profiler (profiling by statistical
2671 sampling, rather than by instrumenting functions) is available as
2672 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2673 * the behaviour of the standard function ED is now customizeable by
2674 third parties through a hook variable: see ED's documentation
2675 string for information on the protocol.
2676 * the compiler no longer emits efficiency notes for (FUNCALL X)
2677 when the type of X is uncertain under default optimization
2679 * fixed bug 276: mutating a binding of a specialized parameter to a
2680 method to something that is not TYPEP the specializer is now
2682 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2683 exhibit the required behaviour on the x86 platform. (thanks to
2684 Peter van Eynde, Eric Marsden and Bruno Haible)
2685 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2686 even for difficult arguments. (reported by Peter Graves)
2687 * fixed bug 141a: the backquote printer now descends quoted
2689 * fixed another bug in backquote printing: no more destructive
2690 modification of the form's list structure. (reported by Brian
2692 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2693 move between its address being taken and the call to
2694 interrupt_thread, fixing a crashing race condition.
2695 * the SB-POSIX contrib implementation has been adjusted so that it
2696 no longer exhibits ridiculously poor performance when constructing
2697 instances corresponding to C structs.
2699 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2700 * minor incompatible change: the sb-grovel contrib now treats C
2701 structures as alien (in the sense of SB-ALIEN) objects rather than
2702 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2703 has implications for memory management of client code
2704 (sb-grovel-returned objects must now be manually managed) and for
2705 type safety (alien objects now have full types).
2706 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2707 used to control emission of compiler diagnostics, rather than the
2708 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2709 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2710 quality should be considered deprecated.
2711 * install.sh now installs the user manual as well
2712 * (not quite a new documentable feature, but worth considering in
2713 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2714 beginnings of a semantically meaningful condition hierarchy is
2715 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2717 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2718 designator as the defaults argument.
2719 * fixed bug: Displaced arrays whose displaced-to array has become
2720 too small now cause ARRAY-DIMENSION to signal an error, providing
2721 for safer bounds-checking. (reported by Bruno Haible)
2722 * fixed bug: DEFCLASS slot definitions with identical :READER and
2723 :WRITER names now signal a reasonable error. (reported by Thomas
2725 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2727 * fixed bug: Invalid slot specification errors now print correctly.
2728 (thanks to Zach Beane)
2729 * fixed bug 320: Shared to local slot value transfers in class
2730 redefinitions now happen corrently from superclasses as
2731 well. (reported by Bruno Haible)
2732 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2734 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2735 improper lists correctly. (reported by Bruno Haible)
2736 * fixed bug 313: source-transform for <fun-name> was erroneously
2737 applied to a call of a value of a variable with name <fun-name>.
2738 (reported by Antonio Menezes Leitao)
2739 * fixed bug 307: The obsolete instance protocol ensures that
2740 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2741 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2742 remove dead unknown-values globs from the middle of the stack.
2743 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2744 easier to resume long computations after using *BREAK-ON-SIGNALS*
2745 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2746 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2747 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2748 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2749 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2750 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2752 * fixed a (fairly theoretical) bug in string printing: if
2753 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2754 does not have array-element-type equal to the most general string
2756 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2757 function name. (thanks to Nikodemus Siivola)
2758 * fixed bug: compile-time format string checker failed on
2759 non-closed ~{. (reported by Thomas F Burdick)
2760 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2761 don't warn on legal loop code involving more than one aggregate
2762 boolean. (thanks to Nikodemus Siivola)
2763 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2764 in keyword position to MAKE-PACKAGE was not being reported as
2766 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2767 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2769 * fixed bugs 280 and 312: the checking for multiple definitions in a
2770 file is less likely to become confused by uses of inline
2772 * fixed bug: the #S reader macro performs the keyword coercion
2773 specified for slot names. (reported by Kalle Niemitalo)
2774 * fixed bug: lambda lists may contain symbols whose names start with
2775 & but are not lambda-list-keywords; their occurrence triggers a
2777 * fixed bug 321: define-method-combination argument lambda lists do
2778 not cause invalid code to be generated when &optional or &aux
2779 variables have default values. (reported by Bruno Haible)
2780 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2781 have CLOS classes; this appears also to have fixed reported
2782 instability in stack exhaustion detection.
2783 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2784 MUFFLE-WARNING when no associated restart is present is now
2786 * optimization: rearranged the expansion of various defining macros
2787 so that each expands into only one top-level form in a
2788 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2790 * optimization: used a previously little-used slot in symbols to
2791 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2793 * fixed some bugs revealed by Paul Dietz' test suite:
2794 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2796 ** Fixed an optimization bug related to inheritance of initforms
2797 from local to shared slots.
2798 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2799 ** CAST optimizer forgot to flush argument derived type.
2800 ** print/read consistency on floats is now orders of magnitude
2801 more likely. (thanks also to Bruno Haible for a similar report
2803 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2804 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2805 for objects of type REAL. Make it so.
2806 ** SXHASH is specified (infelicitously) to respect similarity,
2807 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2808 it so. (thanks to Markus Ziegler)
2809 ** on the Alpha, the compiler succeeds in compiling functions
2810 returning a known number of arguments greater than 63.
2811 ** fixed handling of invalid NIL arguments in keyword position
2813 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2815 ** provided a readably-printable representation for RANDOM-STATE
2817 ** ensured that pathnames, where they have a namestring, always
2818 print using #P"..." syntax.
2820 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2821 * Support for the forthcoming 2.0 version of the NetBSD kernel
2822 running on x86 hardware has been added. (thanks to Perry
2823 E. Metzger most immediately, and others for their past work)
2824 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2825 current release version; SBCL's OpenBSD support had been broken
2826 since about the time of OpenBSD's switch to ELF binary format.)
2827 * [placeholder for DX summary]
2828 ** user code with &REST lists declared dynamic-extent, under high
2829 speed or space and low safety and debug optimization policy.
2830 * The manual has been converted to Texinfo format and the debugger
2831 chapter from the cmucl manual has been added.
2832 * A facility has been added to extract documentation strings from
2833 sbcl and store them as Texinfo-formatted snippets for inclusion in
2834 the manual (via Texinfo's @include directive)
2835 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2836 the test case to Dave Roberts)
2837 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2838 pointers. (reported by Sean Ross)
2839 * bug fix: PROFILE output is printed nicely even for large numerical
2840 values. (thanks to Zach Beane)
2841 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2842 greater than 32 handle EOF correctly.
2843 * bug fix: on X86 an immediate argument of the IMUL instruction is
2844 correctly printed in disassembly. (thanks to Lutz Euler)
2845 * bug fix: class slots in redefined classes preserve their old
2846 values. (thanks to Bruno Haible and Nikodemus Siivola)
2847 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2848 succeeds. (reported by Marco Baringer)
2849 * fixed some bugs revealed by Paul Dietz' test suite:
2850 ** READ-SEQUENCE now works on ECHO-STREAMs.
2851 ** RATIONALIZE works more according to its specification. (thanks
2854 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2855 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2856 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2857 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2858 should matter to you only if you rebind the printer control
2859 variables and then find you want different bindings in the
2860 debugger than in the ordinary execution of your program.)
2861 * The runtime build system has been tweaked to support building
2862 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2863 assembler and linker. (thanks to Nikodemus Siivola)
2864 * Unbound, undefined, undeclared variables now trigger full
2865 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2866 more often programmer error than deliberate exploitation of undefined
2868 * optimization: the hash algorithm for strings has changed to one
2869 that is less vulnerable to spurious collisions. (thanks to Juho
2871 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2872 needless bounds checking. (thanks to Juho Snellman)
2873 * optimization: implemented multiplication as a modular
2874 (UNSIGNED-BYTE 32) operation on the PPC backend.
2875 * fixed some bugs revealed by Paul Dietz' test suite:
2876 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2878 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2879 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2880 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2882 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2884 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2886 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2887 their output stream on EOF from read.
2888 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2889 have been read to end-of-file.
2890 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2892 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2893 description of determination of which consecutive characters
2895 ** Printing the "Space" character with escaping on now yields "#\\ ",
2896 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2897 ** Reading floating-point numbers with *READ-BASE* set to a number
2898 less than 10 works correctly.
2899 ** Reading floating-point numbers with *READ-BASE* set to a number
2900 more than 10 works correctly.
2901 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2902 the readtable currently in effect.
2904 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2905 * minor incompatible change: parsing of namestrings on a physical
2906 (Unix) host has changed; numbers after the final #\. in a
2907 namestring are no longer interpreted as a version field. This is
2908 intented to be largely invisible to the user, except that the
2909 meaning of the namestring "*.*.*" has changed: it now refers to a
2910 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2911 should usually be replaced by
2912 (make-pathname :name :wild :type :wild :version :wild)
2913 with the added benefit that this is more likely to be portable.
2914 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2915 option to OPEN now signals an error if the file being opened
2916 exists; this may have an impact on existing code.
2917 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2918 signals received, on the PowerPC platforms (both Linux and
2919 Darwin). (thanks to Pierre Mai for pointing out the location of
2921 * several fixes on OS X: The system now builds and runs cleanly on
2922 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2923 (thanks to Brian Mastenbrook)
2924 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2925 second-resolution: integer multiples of 1/3600 between -24 and 24.
2926 (thanks to Vincent Arkesteijn)
2927 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2928 type when called with 1 argument; PEEK-CHAR checked type of
2929 PEEK-TYPE only after having read first character from a
2930 stream. (reported by Peter Graves)
2931 * bug fix: the garbage collector now has much better locality
2932 behaviour, and in particular no longer treats all memory as being
2933 exhausted when many small objects point to each other in a deeply
2935 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2936 recognized as being TYPEP their class.
2937 * bug fix: the PUSHNEW documentation string has been corrected.
2938 (thanks to Vincent Arkesteijn)
2939 * bug fix: defaulting of the value for the last of an atypically
2940 large number of multiple values being bound was not being
2941 performed correctly on the Alpha or PPC platforms
2942 * optimization: implemented multiplication as a modular
2943 (UNSIGNED-BYTE 32) operation on the x86 backend.
2944 * optimization: SEARCH on simple-base-strings can now be open-coded.
2945 (see also contrib/compiler-extras.lisp for inspiration for
2946 teaching the compiler about the Boyer-Moore algorithm).
2947 * value, returned by MAX (and MIN) called with several EQUALP, but
2948 not EQL, arguments now does not depend on compiler settings.
2949 * fixed some bugs revealed by Paul Dietz' test suite:
2950 ** in stack analysis liveness information is propagated from
2951 non-local entry points.
2952 ** pathwise CAST removing failed when the CAST node did not start
2954 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2955 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2957 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2958 host is already defined.
2959 ** RENAME-FILE works on streams instead of signalling an internal
2961 ** PEEK-CHAR uses the current readtable when determining whether
2962 or not a character is whitespace.
2963 ** MERGE-PATHNAMES handles the case when the pathname does not
2964 specify a name while the default-pathname specifies a version.
2965 ** Pathnames now stand a better chance of respecting print/read
2967 ** Attempting to use standardized file system operators with a
2968 pathname with invalid :DIRECTORY components signals a
2970 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2972 ** DIRECTORY on logical pathnames is more correct.
2973 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2974 signal a TYPE-ERROR if their argument is not a stream.
2975 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2976 designator argument does not designate a stream.
2977 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2978 examining the synonym.
2979 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2981 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2982 element-type larger than ([UN]SIGNED-BYTE 32).
2984 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2985 * When built with the :SB-FUTEX feature, threaded builds now take
2986 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2987 for faster/more reliable mutex and condition variable support.
2988 * Incompatible change (but one you probably shouldn't have been using
2989 anyway): the interface and code for arbitrating between multiple
2990 threads in the same user session has been redesigned.
2991 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2992 error when called without an explicit environment argument.
2993 (thanks to Nikodemus Siivola)
2994 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2995 confused about their position. (thanks to Adam Warner and Gerd
2997 * bug fix: Pretty printing backquoted forms with unquotations in the
2998 argument list position of various code constructs such as LAMBDA
2999 now works correctly. (reported by Paul Dietz)
3000 * bug fix: Pretty printing unquotations no longer loses all
3001 stream position information.
3002 * optimization: performance of string output streams is now less
3003 poor for multiple small sequence writes.
3004 * optimization: performance of CSUBTYPEP in the presence of complex
3005 expressions involving CONS and NOT many times has been improved.
3006 (reported by Paul Dietz)
3007 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3009 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3010 streams for the REPL, for the debugger, and so on. (thanks to
3012 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3013 * fixed some bugs revealed by Paul Dietz' test suite:
3014 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3015 is ignored if it is too small, rather than propagating through
3016 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3017 ** extremely complex negations of CONS types were not being
3018 sufficiently canonicalized, leading to inconsistencies in
3020 ** VALUES tranformer lost derived type.
3022 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3023 * fixed a bootstrapping bug: the build process no longer assumes
3024 that the various BOOLE-related constants have the same value in
3025 host and target lisps. (noted by Paul Dietz' test suite on an
3026 SBCL binary built from CLISP)
3027 * The system can now be dynamically linked on the MIPS platform,
3028 which enables dynamic loading of foreign code from Lisp. (thanks
3029 to Ralf Baechle for discussions on the MIPS ABI)
3030 * The system now records debugging information for its own source
3031 files in a filesystem-position-independent manner, relative to
3032 the "SYS" logical host.
3033 * fixed a compiler bug: MV-LET convertion did not check references
3034 to the "max args" entry point. (reported by Brian Downing)
3035 * tweaked disassembly notes to be less confident about proclaiming
3036 some instruction as an LRA. (thanks to Brian Downing)
3037 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3038 now each have their own history, command character, and other
3039 characteristics. (thanks to David Lichteblau)
3040 * fixed some bugs revealed by Paul Dietz' test suite:
3041 ** compiler failure in compiling LOGAND expressions including a
3043 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3044 shift greater than 32.
3045 ** FLUSH-DEST did not mark blocks for type check regeneration.
3046 ** HANDLER-CASE failed to accept declarations in handler clauses
3047 in some circumstances.
3049 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3050 * New code in contrib/sb-introspect (still probably not entirely
3051 stable yet) provides some support for smart Lisp development
3052 environments like SLIME.
3053 * The conditions signalled for errors occurring when loading .fasl
3054 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3055 in a way which should help ASDF recover gracefully.
3056 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3057 stuff has been cleaned up. If you code contrib/ stuff, this might
3058 affect you, and you can look at contrib/README, contrib/STANDARDS,
3059 and/or the 0.8.4.27 diff to check.
3060 * In full calls the compiler now does not generate checks for declared
3061 argument types for all arguments.
3062 * various threading fixes
3063 ** and some experimental patches which didn't make it into
3064 the main tree for this release, but which are shipped in
3065 contrib/experimental-thread.patch as a possible fix for some
3066 failures (deadlock, spinning...) in GC-intensive multithreaded
3068 * fixed PPC build problem (source code incompatibility of different
3069 library versions): added offsetof() hackery which attempts to divine
3070 where glibc maintainers put uc_mcontext today
3071 * fixed bug 282: compiler does not trust type assertions while passing
3072 arguments to a full call.
3073 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3074 &OPTIONAL VALUES type parameter.
3075 * fix bug 214: algorithm for noting rejected templates is now more
3076 similar to that of template seletion. (also reported by rydis on
3078 * fixed bug 141b: printing backquoted information readably and prettily
3079 inserts a space where necessary.
3080 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3081 (CHARACTER 10) are now reported as errors, rather than propagated
3082 as unknown types. (reported by piso on #lisp)
3083 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3084 with values NIL and :ERROR. (thanks to Milan Zamazal)
3085 * fixed bug 191c: CLOS now does proper keyword argument checking as
3086 described in CLHS 7.6.5 and 7.6.5.1.
3087 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3088 longer raise an error; further, using a list as a for-as-arithmetic
3089 counter now raises a meaningful error.
3090 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3091 now understood by sequence creation functions such as MAKE-SEQUENCE
3093 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3094 a STRING-INPUT-STREAM.
3095 * compiler enhancement: SIGNUM is now better able to derive the type
3097 * type declarations inside WITH-SLOTS are checked. (reported by
3099 * fixed some bugs revealed by Paul Dietz' test suite:
3100 ** incorrect optimization of TRUNCATE for a positive first
3101 argument and negative second.
3102 ** compiler failure in let-convertion during flushing dead code.
3103 ** compiler failure while deriving type of TRUNCATE on an
3104 interval, containing 0.
3105 ** ASH of a negative bignum by a negative bignum count now returns
3107 ** intersection of CONS types now canonicalizes properly, fixing
3108 inconsistencies in SUBTYPEP.
3110 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3111 * incompatible change: The --disable-debugger command line
3112 option now clobbers the debugger at a more fundamental
3113 level, by redefining #'INVOKE-DEBUGGER instead of by
3114 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3115 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3116 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3117 enter the debugger REPL and then suffer recursive errors
3118 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3119 while under the new system, BREAK in --disable-debugger mode
3120 terminates the system just as an unhandled error would.
3121 * fixed compiler performance when processing loops with a step >1;
3122 * bug fix: DOCUMENTATION now retrieves generic function
3123 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3124 support has been systematized, and now supports the methods
3125 specified by ANSI, along with a default method and a method for
3126 slot documentation. (reported by Nathan Froyd)
3127 * bug fix: effective methods associated with a generic function are
3128 no longer cached over a change of that generic function's method
3129 combination. (reported by Andreas Fuchs)
3130 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3131 names a non-existent directory. (thanks to Andreas Fuchs)
3132 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3133 the PPC platform, lead to stack corruption; this has been fixed.
3134 (reported by Rainer Joswig)
3135 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3136 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3137 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3138 arithmetic in general, is now much more reliable on the PPC
3140 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3141 platform now returns the right answer.
3142 * optimization: restored some effective method precomputation in
3143 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3144 precomputation is now tunable.
3145 * optimization: compiler-internal data structure use has been
3146 reviewed, and changes have been made that should improve the
3147 performance of the compiler by about 20%.
3148 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3149 simple-base-strings and simple-bit-vectors is improved.
3150 * optimization: the optimization of 32-bit logical and arithmetic
3151 functions introduced in version 0.8.3 on the x86 has been
3152 implemented on the mips, ppc and sparc platforms; an
3153 implementation of the same facility, but for 64-bit arithmetic,
3154 has been added for the alpha.
3155 * microoptimization: the compiler is better able to make use of the
3156 x86 LEA instruction for multiplication by constants.
3157 * bug fix: in some situations compiler did not report usage of
3158 generic arithmetic in (SPEED 3) policy.
3159 * bug 145b fix: compiler used wrong type specifier while converting
3160 MEMBER-types to numeric.
3161 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3163 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3164 index argument now works properly on the Alpha platform.
3165 * bug fix: floating point exception treatment on the Alpha platform
3167 * bug fix: FILE-POSITION works much better on string input and
3168 output streams. (thanks to Nikodemus Siivola)
3169 * bug fix: many threading/garbage collection symptoms sorted.
3170 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3171 might be pseudo-atomic.
3172 * internal change: Stopping for GC is now done with signals not
3173 ptrace. GC is now done in whichever thread wanted it, instead of
3175 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3177 * bug fix: result form in DO is not contained in the implicit
3179 * incompatible change: ICR structure is changed; the value part of
3180 CONTINUATION is now called LVAR; corresponding functions are
3181 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3182 * added type deriver for ISQRT (thanks to Robert E. Brown).
3183 * bug fix: better support for loading from the command line when an
3184 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3186 * fixed some bugs revealed by Paul Dietz' test suite:
3187 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3188 ** ROUND and FROUND now give the right answer when given very
3189 small float arguments.
3190 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3192 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3193 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3194 ** LCM should return a non-negative integer.
3195 ** PARSE-INTEGER returned the index of a terminator instead of the
3196 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3197 ** PARSE-INTEGER returned an incorrect index being applied to a
3199 ** LCM with two arguments of 0 returns 0 rather than signalling
3201 ** unsigned addition of a 32-bit constant with the high bit set no
3202 longer causes an internal compiler error on the x86.
3203 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3204 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3205 with negative last argument.
3206 ** byte specifiers with zero size and position no longer cause
3207 an error during type derivation.
3208 ** bignum multiplication on the Alpha platform now returns the
3210 * porting: The system now builds on SuSE AMD64, although it still
3211 generates a 32-bit binary.
3212 * .fasl file incompatibility: The fasl file version number has
3213 been incremented (because of the changes to internal compiler
3214 data structures referred to above).
3216 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3217 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3218 more accurately, on the Darwin kernel running on PowerPC hardware.
3219 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3220 * Compiler code deletion notes now signal a condition of type
3221 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3222 an associated MUFFLE-WARNING restart.
3223 * The compiler now performs limited argument count validation of
3224 constant format strings in FORMAT, and where appropriate in ERROR,
3225 CERROR and WARN. (thanks to Gerd Moellmann)
3226 * New ASDF-INSTALL contrib can be used for automatic download and
3227 installation of third-party Lisp code from CCLAN or other sites
3229 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3230 which forces another thread to execute a function supplied by the
3232 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3233 now accept and act upon their :ELEMENT-TYPE keyword argument.
3234 (reported by Martin Atzmueller, Edi Weitz)
3235 * bug fix: FILE-POSITION now accepts position designators up to
3236 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3237 is the greater. (thanks to Patrik Nordebo)
3238 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3239 Kalle Olavi Niemitalo)
3240 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3241 printable. (reported by Eric Marsden)
3242 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3243 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3244 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3245 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3246 (thanks to Stig Sandoe)
3247 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3248 UNREAD-CHAR now correctly includes the unread character in the
3249 target sequence. (thanks to Gerd Moellmann)
3250 * bug fix in threaded builds: the system can now be suspended and
3251 resumed by shell job control with minimal disruption.
3252 * bug fixes in times and timezones >2038AD
3253 * better handling of "where is GNU make?" problem in build scripts
3254 (thanks to Nikodemus Siivola)
3255 * new optimization: inside a named function any reference to a
3256 function with the same name is considered to be a self-reference;
3257 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3258 optimization quality.
3259 * new optimization on x86: logical functions and + now have
3260 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3261 used when the result is truncated to 32 bits.
3262 * VALUES declaration is partially enabled.
3263 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3264 * fixed some bugs revealed by Paul Dietz' test suite:
3265 ** The system now obeys the constraint imposed by
3266 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3267 types form a lattice under type intersection.
3268 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3269 ** ASSOC now ignores NIL elements in an alist.
3270 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3271 and (1+ MOST-POSITIVE-FIXNUM) answers.
3272 ** The addition of a method with invalid qualifiers to a generic
3273 function does not cause an error to be signalled immediately;
3274 a warning is signalled, and the error is generated only on
3275 calling the generic function.
3276 * changed .fasl file version number, in part to add type codes for
3277 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3278 obscure ANSI requirements
3280 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3281 * fixed bug 148: failure to inline-expand a local function left
3282 garbage, confusing the compiler.
3283 * fixed bugs 3cd: structure slot readers perform type check if the
3284 slot can have an invalid value (i.e. it is either not initialized
3285 or can be written with a less specific slot writer).
3286 * bug fix: the compiler now traps array references to elements off
3287 the end of an array; previously, the bounds checking in some
3288 circumstances could go off-by-one.
3289 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3291 * type declarations for array element types now obey the description
3292 on the CLHS page "Declaration TYPE", as per discussions on
3293 sbcl-help around 2003-05-08. This means that a declaration
3294 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3295 declaration, all references to BAR will be asserted or assumed
3296 (with THE, so dependent on compiler policy) to involve objects of
3297 type FOO. Note that no such declaration is implied in
3298 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3299 * declared types of functions from the "Conditions"
3300 chapter. (reported by Paul Dietz)
3301 * bug fix: CERROR accepts a function as its first argument.
3302 * bug fix: NTH an NTHCDR accept a bignum as index
3303 arguments. (reported by Adam Warner)
3304 * optimization: character compare routines now optimize comparing
3305 against a constant character. (reported by Gilbert Baumann)
3306 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3307 argument now works properly on the MIPS platform.
3308 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3309 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3310 declared to have a functional type, does not cause an error
3312 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3313 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3314 * fixed bug: if last continuation of a deleted block has a
3315 destination, this destination should be deleted too. (reported by
3317 * fixed a bug in the bootstrap process: the host compiler's values
3318 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3319 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3320 test case from Patrik Nordebo)
3321 * improved the ability of the disassembler on the PPC platform to
3322 provide helpful disassembly notes.
3323 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3324 the class in more cases than previously.
3325 * bug fix: FILE-POSITION now understands :START and :END for
3326 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3327 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3328 8) data. (thanks to David Lichteblau)
3329 * bug fix: it is possible to add a method to a generic function
3330 without lambda list.
3331 * bug fix: reader failed to signal END-OF-FILE inside an
3332 object representation. (reported by Nikodemus Siivola)
3333 * fixed some bugs revealed by Paul Dietz' test suite:
3334 ** LAST and [N]BUTLAST should accept a bignum.
3335 ** condition slot accessors are methods.
3336 ** (VECTOR NIL) is a subtype of STRING.
3338 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3339 * minor incompatible change: some nonsensical specialized lambda
3340 lists (used in DEFMETHOD) which were previously ignored now signal
3342 * minor incompatible change: the system is now aware of the types of
3343 variables in the COMMON-LISP package, and will signal errors for
3344 most violations of these type constraints (where previously they
3345 were silently accepted).
3346 * minor incompatible change: COMPILE-FILE now uses the freedom
3347 afforded (ANSI 3.2.2.3) to use derived function types for
3348 functions defined in the same file. This also permits the system
3349 to warn on static type mismatches and function
3350 redefinition. (Currently it does not work with high DEBUG level.)
3351 * minor incompatible change: VALUES declaration is disabled.
3352 * When issuing notes, the compiler now signals a condition of type
3353 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3354 restart for use in user handlers. It is expected that the
3355 COMPILER-NOTE condition will eventually become a condition
3356 supertype to a hierarchy of note types, which will then be
3357 handleable in a similar fashion. However, at the moment, no such
3358 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3359 but it's an implementation detail, not a classification for the
3361 * Changes in type checking closed the following bugs:
3362 ** type checking of unused values (192b, 194d, 203);
3363 ** template selection based on unsafe type assertions (192c, 236);
3364 ** type checking in branches (194bc).
3365 * A short form of VALUES type specifier has ANSI meaning (it has
3366 increased the number of situations when SBCL cannot perform type
3368 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3369 keywords or constants is permissible.
3370 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3371 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3372 classes. (thanks to Antonio Martinez)
3373 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3374 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3375 argument to a pretty-print stream. Instead, it leaves any such
3376 operations to DESCRIBE-OBJECT methods.
3377 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3379 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3380 lambda lists. (thanks to David Lichteblau)
3381 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3382 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3383 (thanks to Gerd Moellmann)
3384 * fixed bug 246: increased compilation speed of long
3385 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3387 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3389 * DEFCONSTANT now throws a condition of type
3390 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3391 constant to a non-EQL value; CONTINUE and ABORT restarts
3392 respectively change and preserve the value.
3393 * fixed bug 63: The code walker, part of the implementation of CLOS,
3394 is now better at handling symbol macros.
3395 * bug fix: There is no longer an internal implementation type named
3396 CL:LENGTH. (reported by Raymond Toy)
3397 * bug fix: In macro-like defining macros/special operators the
3398 implicit block does not enclose the lambda list.
3399 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3400 enclosed in parentheses) are not suitable as type specifiers, and
3401 their use properly signals an error now.
3402 * bug fix: An argument count mismatch for a type specifier in code
3403 being compiled no longer causes an unhandled error at compile
3404 time, but signals a compile-time warning.
3405 * fixed simple vector readable printing
3406 * bug fix: DESCRIBE takes more care over whether the class
3407 precedence list slot of a class is bound before accessing it.
3408 (reported by Markus Krummenacker)
3409 * bug fix: FORMATTER can successfully compile pretty-printer format
3410 strings which use variants of the ~* directive inside.
3411 * bug fix: SEARCH now applies its TEST predicate to the elements of
3412 the arguments in the correct order. (thanks to Wolfhard Buss)
3413 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3414 in type inference. (thanks to Robert E. Brown)
3415 * bug fix: Reading in symbols with an explicit package name of ""
3416 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3417 * fixed some bugs revealed by Paul Dietz' test suite:
3418 ** NIL is now allowed as a structure slot name.
3419 ** Arbitrary numbers, not just REALs, are allowed in certain
3420 circumstances in LOOP for-as-arithmetic clauses.
3421 ** Multiple class redefinitions before slot access no longer
3422 causes a type error.
3423 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3424 association between the name and a class.
3425 ** Generic functions with non-standard method-combination and over
3426 five methods all of which return constants no longer return NIL
3427 after the first few invocations. (thanks to Gerd Moellmann)
3428 ** CALL-NEXT-METHOD with no arguments now passes the original
3429 values of the arguments, even in the presence of assignment.
3430 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3432 ** DISASSEMBLE works with closures and funcallable instances.
3433 ** ADD-METHOD now returns the generic function, not the new method.
3434 ** FIND-METHOD signals an error if the lengths of the specializers
3435 is incompatible with the generic function, even if the ERRORP
3437 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3438 which its argument is a member.
3439 ** DEFCLASS only redefines the class named by its class-name
3440 argument if that name is the proper name of the class;
3441 otherwise, it creates a new class.
3442 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3443 of the UNBOUND-SLOT condition to the name of the slot.
3444 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3445 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3446 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3447 SLOT-MAKUNBOUND in the specified fashion.
3449 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3450 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3451 cross-compilation host. As a consequence, we can now bootstrap our
3452 way up to SBCL starting with a bare gcc toolchain and human-readable
3453 source code (first the source to CLISP, then the source to SBCL).
3454 * A contributed module containing a partial implementation of the
3455 simple-streams interface has been included. (thanks to Rudi
3457 * A contributed module implementing the RFC1321 Message Digest
3458 Algorithm, known as MD5, has been included.
3459 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3460 no longer has any effect, as the code controlled by this feature
3461 has been deleted. (As far as we know, no-one has ever built using
3462 this feature, and its semantics were confused in any case).
3463 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3464 work on conditions (as required by the ANSI specification),
3465 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3466 expected behaviour on conditions. Users should note, however,
3467 that such behaviour is not required by the ANSI specification,
3468 and so use of this behaviour may render their code unportable.
3469 * fixed some bugs revealed by Paul Dietz' test suite:
3470 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3472 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3473 ** SXHASH on condition objects no longer returns NIL.
3474 ** :ALLOCATION :CLASS slots are better treated; their values are
3475 updated on class redefinition, and initforms inherited from
3476 superclasses are applied.
3477 ** REMOVE-METHOD returns its generic function argument even when
3478 no method was removed.
3479 ** SHARED-INITIALIZE now initializes the values of the requested
3480 slots, including those with :ALLOCATION :CLASS.
3481 ** ALLOCATE-INSTANCE now works on structure classes defined via
3482 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3484 ** SLOT-EXISTS-P now works on conditions, as well as structures
3486 ** MAKE-LOAD-FORM now has the required methods on
3487 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3488 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3489 keyword, and now implements the SLOT-NAMES argument.
3490 ** methods with &OPTIONAL arguments no longer allow too many
3491 arguments to be passed in the call without error.
3492 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3493 option is consistent with the required arguments of the generic
3494 function lambda list.
3495 * bug fix: REQUIRE accepts a string designator. (Thanks to
3497 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3498 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3499 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3500 * bug fix: The compiler now checks for duplicated variables in macro
3502 * bug fix: SETQ on globals returns the correct value.
3503 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3504 not a COMPILER-ERROR (followed by some other strange error on
3505 choosing the CONTINUE restart).
3506 * bug fix: make.sh and friends are now more consistent in the way that
3507 they look for GNU "make".
3509 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3510 * experimental native threads support (on x86 Linux >=2.4 only).
3511 This is not compiled in by default: you need to add :SB-THREAD to
3512 the target features. See the "Beyond ANSI" chapter of the manual
3514 * fix for longstanding nonANSIism: The old distinction between
3515 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3516 The return value from CL:FIND-CLASS is now a CLOS class, and
3517 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3518 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3519 * An interface to the MetaObject Protocol, as described in Kiczales,
3520 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3521 MIT Press, 1991, is available from the SB-MOP package.
3522 * incompatible change: the SB-PCL package should now be considered
3523 a private implementation detail, and no longer a semi-private MOP
3525 * minor incompatible change: due to rearrangement for threads, the
3526 control stack and binding stack are now allocated at arbitrary
3527 addresses instead of being hardcoded per-port. Users affected by
3528 this probably have to be doing advanced things with shared
3529 libraries, and will know who they are.
3530 * minor incompatible change: Previously, all --eval forms used were
3531 processed with READ before any of them were processed with EVAL.
3532 Now each --eval form is processed with both READ and EVAL before
3533 the next --eval form is processed. (Thus package operations like
3534 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3535 work as the user might reasonably expect.)
3536 * minor incompatible change: *STANDARD-INPUT* is now only an
3537 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3539 * minor incompatible change: Y-OR-N-P is now character-oriented,
3540 not line oriented. Also, YES-OR-NO-P now works without errors.
3541 (thanks to Antonio Martinez)
3542 * sb-aclrepl module improvements: an integrated inspector, added
3543 repl features, and a bug fix to :trace command.
3544 * Known functions, which cannot be open coded by the backend, are
3545 considered to be able to check types of their arguments. (fixing
3546 a bug report by Nathan J. Froyd)
3547 * fixed a bug in computing method discriminating functions: It is
3548 now possible to define methods specialized on classes which have
3549 forward-referenced superclasses. (thanks to Gerd Moellmann)
3550 * fixed evaluation order in optional entries (reported by Gilbert
3552 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3553 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3554 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3555 required-by-AMOP NAME argument, as well as CLASS and
3556 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3557 * fixed bug 20: DEFMETHOD can define methods using names that are
3558 not the proper names of classes to designate class specializers.
3559 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3560 Unix file descriptors, instead of blowing up. (thanks to Antonio
3562 * Garbage collection refactoring: user-visible change is that a
3563 call to the GC function during WITHOUT-GCING will not do garbage
3564 collection until the end of the WITHOUT-GCING. If you were doing
3565 this you were probably losing anyway.
3566 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3567 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3568 TYPEP the latter but not the former.
3569 * The compiler issues a full WARNING for calls to undefined functions
3570 with names from the CL package.
3571 * MAP-INTO for a vector destination is open coded. (reported by
3572 Brian Downing on c.l.l)
3573 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3574 documentation string.
3575 * fixed some bugs revealed by Paul Dietz' test suite:
3576 ** COPY-ALIST now signals an error if its argument is a dotted
3578 ** Condition slots are now accessed more correctly in the presence
3579 of multiple initargs for a given slot.
3580 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3581 exclude restarts of the same name associated with a different
3583 ** DEFCLASS of forward-referenced classes with another
3584 forward-referenced class in the superclasses list no longer
3586 ** Condition slots are now initialized once each, not multiple
3587 times. (thanks to Gerd Moellmann)
3588 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3590 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3591 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3592 arguments contain duplicated elements.
3593 ** RESTART-CASE understands local macros.
3594 ** RESTART-CASE associates exactly its own restarts with a condition.
3595 ** ENDP in safe mode checks its argument to be of type LIST.
3596 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3597 in question is unbound.
3598 ** Optimized MAKE-INSTANCE functions no longer cause internal
3599 assertion failures in the presence of duplicate initargs.
3600 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3601 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3602 propagated even in the ctor optimized implementation of
3604 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3606 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3607 * a better implementation of SXHASH on (simple) bit vectors,
3608 measured both in execution speed and in distribution of results
3609 over the positive fixnums, has been installed. Likewise, a better
3610 implementation of EQUAL for simple bit vectors is now available.
3611 * fixed CEILING optimization for a divisor of form 2^k.
3612 * fixed bug 240 (emitting extra style warnings "using the lexical
3613 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3614 by Antonio Martinez)
3615 * fixed SXHASH, giving different results for NIL depending on type
3616 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3617 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3618 variable. (found by Rolf Wester)
3619 * SBCL does not ignore type declarations for special
3620 variables. (reported by rif on c.l.l 2003-03-05)
3621 * some bug fixes in contrib/sb-aclrepl/
3622 * fixed some bugs revealed by Paul Dietz' test suite:
3623 ** a bug in the CONS type specifier, whereby the CAR and CDR
3624 types got intertwined, has been fixed;
3625 ** the type system is now able to reason about the interaction
3626 between INTEGER and RATIO types more completely;
3627 ** APPEND, [N]REVERSE and NRECONC check that those their
3628 arguments, which must be proper lists, are really so;
3629 ** An array specialized to be unable to hold elements has been
3630 implemented, as required -- yes, really -- by ANSI;
3631 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3632 on malformed property lists;
3634 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3635 * incompatible packaging change: in line with Unix convention,
3636 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3637 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3638 * REQUIRE and PROVIDE are now optionally capable of doing something
3639 useful. See the documentation string for REQUIRE.
3640 * infrastructure for a managed SBCL contrib system: contributed
3641 modules in this release include:
3642 ** the ASDF system definition facility;
3643 ** an interface to the BSD Sockets API;
3644 ** an ACL-like convenience interface to the repl;
3645 (thanks to Kevin Rosenberg)
3646 ** an implementation of ROTATE-BYTE, with efficient implementation
3648 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3649 gives a closer approximation to the right answer than previously.
3650 (thanks to Raymond Toy)
3651 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3652 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3653 optional environment arguments, as required by ANSI.
3654 * fixed bugs in other functions taking environment objects, allowing
3655 calls with an explicit NIL environment argument to be compiled
3657 * fixed bug 228: primary return values from
3658 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3659 COMPILE or FUNCTION.
3660 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3661 :TYPE will no longer signal errors on innocuous objects.
3662 * fixed bug 231b: SETQ is better at respecting type declarations in
3663 the lexical environment.
3664 * fixed a bug in DEFCLASS: classes named by symbols with no or
3665 unprintable packages can now be defined.
3666 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3667 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3668 * fixed compiler failure related to checking types of functions.
3669 (reported by Robert E. Brown)
3670 * the compiler is now much more consistent in its error-checking
3671 treatment of bounding index arguments to sequence functions: in
3672 (SAFETY 3) code, errors will be signalled in almost all cases if
3673 invalid sequence bounding indices are passed to functions defined
3674 by ANSI to operate on sequences.
3675 * fixed a bug in the build procedure: documentation of SBCL-specific
3676 packages is now preserved and available in the final Lisp image.
3677 * lifted FDEFINITION lookup out of loops in the implementation of
3678 many list operations. (thanks to Robert E. Brown)
3679 * fixed a bug in the reader: the #n# reader macro now works for
3680 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3681 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3682 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3683 E. Brown and Tony Martinez respectively)
3684 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3685 SLOT-BOUNDP: in particular, it is now able to optimize them much
3686 better, and is now not vulnerable to having packages renamed.
3687 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3688 always called when a slot is not present in an instance. (thanks
3690 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3691 longer signal an error on unreading a character following EOF on
3692 the previous constituent stream. (thanks to Tony Martinez)
3693 * fixed some bugs revealed by Paul Dietz' test suite:
3694 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3695 not just nonnegative fixnums;
3696 ** the logical bit-array operators such as BIT-AND now accept an
3697 explicit NIL for their "opt-arg" argument (to indicate a
3698 freshly-consed result bit-array);
3699 ** ELT now signals an error on an invalid sequence index in safe
3701 ** the type system is now cleverer about negations of numeric
3702 types, and consequently understands the BIGNUM and RATIO types
3704 ** the type system is now cleverer about the interaction between
3705 INTEGER and RATIO types: while bugs still remain, many more
3706 cases are accurately computed;
3707 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3708 if it is in the last clause;
3709 ** CONSTANTLY now correctly returns a side-effect-free function in
3711 ** DECLARE is no longer treated as a special-operator; in
3712 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3713 * incremented fasl file version number due to the change in the
3714 DEFSTRUCT-SLOT-DESCRIPTION structure.
3716 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3717 * minor incompatible change: code processed by the "interpreter" or
3718 EVAL now has a compilation optimization policy of (DEBUG 2)
3719 (changed from (DEBUG 1)) to improve debuggability of interactive
3720 development, and to allow the use of the debug RETURN command in
3722 * an experimental implementation of the RETURN command for the
3723 debugger has been included. (thanks to Frederik Kuivinen)
3724 * fixed bug 62: constraints were not propagated into a loop.
3725 * fixed bug in embedded calls of SORT (reported and investigated by
3727 * fixed some bugs revealed by Paul Dietz' test suite:
3728 ** printing and reading of arrays with some dimensions having
3729 length 0 (thanks to Gerd Moellmann);
3730 ** BOA constructor with &AUX argument without a default value does
3731 not cause a type error;
3732 ** CONSTANTP now returns true for all self-evaluating objects.
3734 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3735 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3736 accessors that are related by inheritance, as specified in the
3737 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3738 Valtteri Vuorikoski)
3739 * The compiler is now able to inline functions that were defined in
3740 a complex lexical environment (e.g. inside a MACROLET).
3741 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3743 * Support for the upcoming FreeBSD-5.0 release has been included.
3744 (thanks to Dag-Erling Smorgrav)
3745 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3746 effect when it is not in a toplevel context.
3747 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3748 stand a better chance of being correct. (thanks to Gerd
3750 * fixed bug in COERCE, which now signals an error on coercing a
3751 rational to a bounded real type which excludes the expected
3753 * The compiler is now able to derive types more accurately from the
3754 COERCE and COMPILE functions.
3755 * fixed bug 223: functional binding is considered to be constant
3756 only for symbols in the CL package.
3757 * fixed bug 231: SETQ did not check the type of a variable being set
3758 (reported by Robert E. Brown)
3759 * A new optimization for MAKE-INSTANCE has been included, fixing
3760 various bugs (including relating to :ALLOCATION :CLASS slots and
3761 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3763 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3764 ** As required by ANSI, LOOP now disallows anonymous collection
3765 clauses such as COLLECT I in conjunction with aggregate boolean
3766 clauses such as THEREIS (= I 1);
3767 ** LOOP now signals an error when any variable is reused in the
3768 same loop (including the potentially useful construct analogous
3769 to WITH A = 1 WITH A = (1+ A);
3770 ** IT is only a special loop symbol within the first clause of a
3771 conditional loop clause;
3772 ** LOOP with a typed iteration variable over a hashtable now
3773 signals a type error iff it should.
3774 * fixed some other bugs revealed by Paul Dietz' test suite:
3775 ** FILE-STREAM now names the class previously known as FD-STREAM;
3776 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3777 argument) no longer signals an error;
3778 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3779 of the slot symbol, rather than using the current package
3780 ((:CONC-NAME "") continues to intern the slot's name in the
3782 * incremented fasl file version number, because of the incompatible
3783 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3784 of the new implementation of DEFINE-COMPILER-MACRO.
3786 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3787 * Support for building SBCL for MIPS platforms running in
3788 little-endian mode has now been checked in, and basic
3789 functionality on said platforms verified.
3790 * minor incompatible change: PCL now records the pathname of a file
3791 in which methods and the like are defined, rather than its
3793 * minor incompatible change: TRUENAME now considers the truename of
3794 a file naming a directory to be the pathname with :DIRECTORY
3795 component indicating that directory.
3796 * minor incompatible change: a NAMED clause in the extended form of
3797 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3798 reason for the previous behaviour is unclear.
3799 * more systematization and improvement of CLOS and MOP conformance
3800 in PCL (thanks to Gerd Moellman and Pierre Mai):
3801 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3803 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3804 primary methods with no specializers;
3805 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3807 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3808 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3809 FORWARD-REFERENCED-CLASSes; error reporting on
3810 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3812 ** SXHASH on CLOS instances now uses a slot internal to the
3813 instance to return different numbers on distinct instances,
3814 while preserving the same return value through invocations of
3816 ** DEFMETHOD signals errors when methods with longer incongruent
3817 lambda lists are added to generic functions;
3818 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3819 CLASS, as specified in AMOP;
3820 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3821 on the order returned by the primary method for classes of
3822 class STANDARD-CLASS;
3823 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3824 * fixed some bugs shown by Paul Dietz' test suite:
3825 ** DOLIST puts its body in TAGBODY;
3826 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3828 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3829 value producing form;
3830 ** if more variables are given to PROGV than values, extra
3831 variables are bound and made to have no value;
3832 ** NSUBSTITUTE on list arguments gets the right answer with
3834 ** ELT signals an error of type TYPE-ERROR when the index argument
3835 is not a valid sequence index;
3836 ** LOOP signals (at macroexpansion time) an error of type
3837 PROGRAM-ERROR when duplicate variable names are found;
3838 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3839 ** FUNCALL of special-operators now cause an error of type
3841 ** PSETQ now works as required in the presence of side-effecting
3842 symbol-macro places;
3843 ** NCONC accepts any object as its last argument;
3844 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3846 ** loop-for-as-package does not require a package to be explicitely
3848 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3850 * fixed bug 166: compiler preserves "there is a way to go"
3851 invariant when deleting code.
3852 * fixed bug 172: macro lambda lists with required arguments after
3853 &REST arguments now cause an error to be signalled. (thanks to
3855 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3856 bug. (thanks to Matthew Danish)
3857 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3859 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3860 arguments are lexically rebound. (thanks to Gerd Moellmann and
3862 * fixed bug 194: error messages are now more informative when there
3863 is no primary method applicable in a call to a generic
3864 function. (thanks to Gerd Moellmann)
3865 * fixed bug in command line argument checking (thanks to Julian
3867 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3868 (thanks to Matthew Danish)
3869 * incremented fasl file version number, because of the
3870 SXHASH-related changes in the layout of CLOS data structures
3872 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3873 * minor incompatible change: The runtime (the Unix executable named
3874 "sbcl") is now much pickier about the .core files it will load.
3875 Essentially it now requires .core files to descend from the same
3876 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3877 as the runtime does. (The intent is to prevent the crashes which
3878 can occur, and which can even be reported as mysterious failures,
3879 when people patch the sources or change the build parameters
3880 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3881 sbcl and .core files.)
3882 * fixed bug: VALUES-LIST is no longer optimized away.
3883 * fixed bug 142: The FFI conversion of C string values to Lisp
3884 string values no longer conses excessively. (thanks to Nathan
3885 Froyd porting Raymond Toy's fix to CMU CL)
3886 * began to systematize and improve MOP conformance in PCL (thanks to
3887 Nathan Froyd, Gerd Moellman and Pierre Mai):
3888 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3890 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3891 ** FINALIZE-INHERITANCE is now called on class finalization;
3892 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3893 argument precedence order.
3894 * fixed bug 202: The compiler no longer fails on functions whose
3895 derived types contradict their declared type.
3896 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3897 so it can be non-toplevel.
3898 * The fasl file version number has changed (because of the new
3899 implementation of DEFMACRO).
3900 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3901 safe code, that any length requirement by their type-specifier
3902 argument is valid. The exceptions to this are described in bug
3904 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3905 functions now check the types of their inputs as required by ANSI.
3906 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3907 introduced symbol is DECLAREd to be SPECIAL.
3908 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3909 * fixed bug: :COUNT argument to sequence functions may be negative
3910 * fixed bug: body of DO-SYMBOLS may contain declarations
3911 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3912 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3913 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3914 symbol macro only once
3915 * fixed printing of call frame when argument list is unavailable
3916 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3917 * compiler no longer signals WARNING on unknown keyword
3920 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3921 * A beta-quality port to the mips architecture running Linux,
3922 based on the old CMUCL backend, has been made. It has been tested
3923 on a big-endian kernel, and works sufficiently well to be able to
3924 rebuild itself; it has not been tested in little-endian mode.
3925 * fixed an inconsistency between gencgc.c and purify.c which made
3926 dumping/loading .core files unreliable
3927 * fixed bug 120a: The compiler now deals correctly with IFs where
3928 the consequent is the same as the alternative, instead of
3929 misderiving the return type. (thanks to Alexey Dejneka)
3930 * fixed bug 113: Logical pathnames are now dumpable (the logical
3931 host is resolved at load-time, throwing an error if it is not
3933 * fixed bug 174: FORMAT's error message is slightly clearer when a
3934 non-printing character is used in a format directive.
3935 * fixed several bugs in compiler checking of type declarations, i.e.
3936 violations of the Python "declarations are assertions" principle
3937 (thanks to Alexey Dejneka)
3938 * fixed several bugs in PCL's error checking (thanks to Gerd
3940 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3942 * fixed bug in compilation of functions as first class values
3943 (thanks to Antonio Martinez-Shotton)
3944 * The compiler's handling TYPE-ERRORs which it can prove will
3945 inevitably happen at runtime has been cleaned up and corrected
3946 in several ways. (thanks to Alexey Dejneka)
3947 * improved argument type checking for various basic arithmetic
3948 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3949 lavished on them in the past that they can be compiled in many
3950 ways in different special cases
3951 * fixed bug 181: compiler checks validity of user supplied type
3953 * cleaned up code flushing in optimization: Function calls which
3954 should signal errors for safety purposes (e.g. which ANSI says
3955 should signal errors when their arguments are of incorrect type)
3956 are no longer optimized away.
3957 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3958 * incremented fasl file version number, because changes in the
3959 implementation of sequence functions like COERCE caused
3960 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3961 in old inline expansions) to become undefined. (Actually these
3962 changes were later undone, so we might very well be binary
3963 compatible with 0.7.7 after all, but leaving the version number
3964 incremented seemed like the simplest and most conservative
3967 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3968 * An alpha-quality port to the parisc architecture running Linux,
3969 based on the old CMUCL backend, has been made. This, even more so
3970 than the other backends, should be considered still a work in
3971 progress; known problems include that the Linux kernel in 64-bit
3972 mode does not propagate the correct sigcontext structure to
3973 userspace, and consequently SBCL on a parisc64 kernel will not
3975 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3976 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3977 suppressed.) Also now that the compiler is looking at declarations
3978 in the environment, it checks optimization declarations as well,
3979 and suppresses inlining when (> DEBUG SPEED).
3980 * More fixes have been made to treatment of floating point exception
3981 treatment and other Unix signals. In particular, floating point
3982 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3983 * The detection and handling of control stack exhaustion (infinite
3984 or very deeply nested recursion) has changed. Stack exhaustion
3985 detection is now done by write-protecting pages at the OS level
3986 and applies at all optimization settings; when found, a
3987 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3988 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3989 be caught using IGNORE-ERRORS.
3990 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3991 correctly when transforming recursive LABELS functions to LETs.
3992 (thanks to Alexey Dejneka)
3993 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3994 that are names of constants or global variables.
3995 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3996 alien routines with docstrings.
3997 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3998 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4000 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4001 (thanks to Eric Marsden)
4002 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4003 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4004 * Bug fix: The SPARC backend can now compile functions involving
4005 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4006 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4007 to a functions expecting a PATHNAME-DESIGNATOR.
4008 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4009 lambda lists. (thanks to Alexey Dejneka)
4010 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4011 functions so that EXPORTing the name of the class doesn't cause
4012 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4013 to Antonio Martinez for reporting this)
4014 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4015 constant-folded without failing an assertion. (thanks to Einar
4016 Floystad Dorum for reporting this)
4017 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4018 types are now dealt with more correctly by the compiler.
4019 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4020 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4021 behaviour analogous to RENAME-FILE. This puts its behaviour more
4022 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4024 * The fasl file version number has changed again. (because of the
4025 bug fix involving the names of PCL MAKE-INSTANCE functions)
4027 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4028 * bug fix: Floating point exceptions are treated much more
4029 consistently on the x86/Linux and PPC/Linux platforms.
4030 * Array initialization with :INITIAL-ELEMENT is now much faster for
4031 cases when the compiler cannot open code the array creation, but
4032 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4033 array accesses have also seen a speed increase.
4034 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4035 specified. (This was at the root of some bad interactions between
4036 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4038 * bug fix: Internal error arguments for undefined functions are now
4039 computed correctly on the PPC/Linux platform.
4040 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4041 Raymond Toy's patch for CMU CL)
4042 * Support for the Solaris 9 operating environment has been included
4043 (thanks to Daniel Merritt)
4044 * A very ugly but hopefully complete draft of the missing FFI chapter
4045 of the manual has been created by reformatting the corresponding
4046 CMU CL manual chapter into (currently very ugly and incoherent)
4047 DocBook and bringing it up to date for SBCL behavior. Thus, the
4048 manual is now essentially complete, at least by my extreme
4049 once-and-only-once standards, whereby it's acceptable to refer to
4050 the doc strings of SB-EXT functions as the primary documentation.
4051 * The fasl file version number has changed again, due to cleanup of
4052 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4053 is no longer a static symbol.)
4055 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4056 * SBCL now builds with OpenMCL (version 0.12) as the
4057 cross-compilation host; also, more progress has been made toward
4058 bootstrapping under CLISP.
4059 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4061 * bug 158 fixed: The compiler can now deal with integer loop
4062 increments different from 1; fixing this turned out also to fix
4064 * bug 169 fixed: no more bogus warnings about using lexical bindings
4065 despite the presence of perfectly good SPECIAL declarations (thanks
4066 to David Lichteblau)
4067 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4068 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4069 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4071 * bug 180 fixed: Method combination specifications no longer ignore
4072 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4073 * bug fix: Structure type predicate functions now check their argument
4074 count as they should.
4075 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4076 correctly. (thanks to Pierre Mai)
4077 * minor incompatible change: The --noprogrammer option is deprecated
4078 in favor of the new --disable-debugger option, which is very similar.
4079 (The major difference is that it takes effect at a slightly different
4080 time at startup, causing handling of errors in --sysinit and
4081 --userinit files will be affected differently.) The
4082 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4083 been added to allow this functionality to be controlled from ordinary
4084 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4085 maintainers, who might want to run non-interactive scripts to
4086 build SBCL cores which will later be used interactively.)
4087 * minor incompatible change: The LOAD function no longer, when given
4088 a wild pathname to load, loads all files matching that pathname.
4089 Instead, an error of type FILE-ERROR is signalled.
4091 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4092 * bug 147 fixed: The compiler preserves its block link/count
4093 invariants more correctly now so that it doesn't crash. (thanks
4095 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4097 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4098 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4099 no-value-for-this-character as NIL (as specified by ANSI).
4100 * HOST-NAMESTRING on physical pathnames now returns a string that is
4101 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4102 (thanks to Christophe Rhodes)
4103 * The Alpha port handles icache flushing more correctly. (thanks to
4105 * More progress has been made toward bootstrapping under CLISP. (thanks
4106 to Christophe Rhodes)
4107 * The fasl file format has changed again, because dynamic loading
4108 on OpenBSD (which has non-ELF object files) motivated some cleanups
4109 in the way that foreign symbols are transformed and passed around.
4110 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4111 is no longer treated as whitespace by the reader, but instead as
4112 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4113 |A
\7fB|, instead of A as it used to.
4115 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4116 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4117 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4118 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4119 this as of 0.7.1.45, but was left out of the previous news section
4120 (thanks to Dan Barlow)
4121 * SBCL now runs on the Solaris operating system on SPARC architectures
4122 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4123 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4124 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4125 * SPARC backend cleanups, allowing builds of cores optimized for V8
4126 and V9 SPARCS, and also emission of code targeted to a particular
4127 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4129 * SBCL is closer to bootstrapping under CLISP, thanks to various
4130 fixes by Christophe Rhodes.
4131 * The fasl file format has changed again, to allow the compiler's
4132 INFO database to support symbol macros.
4133 * The user manual (in doc/) is formatted into HTML more nicely.
4134 (thanks to coreythomas)
4135 * The system is smarter about SUBTYPEP relationships, especially
4136 those involving NOT types (including types such as ATOM which are
4137 represented internally using NOT types). Thus SUBTYPEP is less
4138 likely to return (VALUES NIL NIL) in general, and in particular
4139 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4141 * The fasl file format has changed again, because the internal
4142 representation of types now includes a new slot to support the new
4143 SUBTYPEP-of-NOT-types logic.
4144 * (not a change in the main branch of SBCL, but a related prototype
4145 which can hopefully be merged into the main branch of SBCL in the
4146 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4147 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4148 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4149 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4150 dispatch macro character combinations. (thanks to Alexey Dejneka)
4151 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4152 that superficially look like logical namestrings correctly.
4153 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4155 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4156 default supplied-p) for &optional and &key arguments. (thanks to
4159 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4160 * incompatible change: The compiler is now less aggressive about
4161 tail call optimization, doing it only when (> SPACE DEBUG) or
4162 (> SPEED DEBUG). (This is an incompatible change because there are
4163 programs which relied on the old CMU-CL-style behavior to optimize
4164 away their unbounded recursion which will now die of stack overflow.)
4165 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4166 for non-GENCGC systems has been increased to 20M (since that
4167 seems much closer to the likely performance optimum for modern
4168 systems than the old 4M value was)
4169 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4170 and *DEBUG-PRINT-LEVEL*
4171 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4172 of CMU CL's support for SPARC, and various endianness and other
4173 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4174 * new syntactic sugar for the Unix command line: --load foo.bar is now
4175 an alternate notation for --eval '(load "foo.bar")'.
4177 ** The system now detects stack overflow and handles it gracefully,
4178 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4179 optimization settings. (This is a good thing in general, and
4180 its introduction in this version should be particularly timely
4181 for anyone whose code fails because of suppression of tail
4183 ** The system now hunts for the C variable "environ" in a more
4184 devious way, to avoid segfaults when the C library version differs
4185 between compile time and run time. (thanks to Christophe Rhodes)
4186 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4187 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4188 ** The compiler no longer issues bogus style warnings for undefined
4189 classes in the same source file as the DEFCLASSes which defined
4190 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4192 ** fixes in CONDITION class precedence list for undefined function
4193 errors (thanks to Alexei Dejneka)
4194 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4195 correctly. (thanks to Dan Barlow)
4196 ** portability fixes aiming at bootstrapping under CLISP (thanks
4197 to Dave McDonald and Christophe Rhodes)
4198 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4199 ** fixes in type translation and and type inference (thanks to
4201 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4202 ** various fixes in the new ports (thanks to Dan Barlow)
4203 * several changes related to debugging:
4204 ** suppression of tail recursion, as noted above
4205 ** stack overflow detection, as noted above
4206 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4207 is now the default. (For some time encapsulation has been more
4208 reliable than the breakpoint-based :ENCAPSULATE NIL
4209 implementation, at least on X86 systems; and I just noticed that
4210 encapsulation also seems closer to the spirit of the ANSI
4213 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4215 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4216 up properly again. (There was a packaging bug in 0.7.0 which
4217 left their definitions in SB-SYS::LOAD-FOREIGN and
4218 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4219 vital for most things which interface to C-level interfaces,
4220 like extensions working with sockets or databases or
4221 Perl-compatible regexes or whatever, and the need to fix
4222 this bug is the main reason that 0.7.1 was released so
4224 ** DEFGENERIC is now choosier about the methods it redefines, so that
4225 reLOADing a previously-LOADed file containing DEFGENERICs does
4226 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4227 cycle now works as it should. (thanks to Alexey Dejneka)
4228 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4229 fixed by Christophe Rhodes. (He actually submitted this patch
4230 months ago, and I delayed until after 0.7.0.)
4231 ** Bug 111 (internal compiler confusion about runtime checks on
4232 FUNCTION types) was fixed by Alexey Dejneka.
4233 * Some internal cleanups (getting rid of variables which aren't
4234 needed now that the byte interpreter is gone) caused the fasl
4235 file format number to change again.
4237 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4238 * major incompatible change: The default fasl file extension, i.e. the
4239 default extension for files produced by COMPILE-FILE, has changed
4240 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4242 ** There are many changes in the implementation of the compiler.
4243 SBCL is now essentially a compiler-only implementation of ANSI
4244 Common Lisp. EVAL still "interprets" a few special cases, but
4245 almost all the interesting cases are handled by creating
4246 a LAMBDA expression, calling COMPILE on it, then calling
4247 FUNCALL on the result.
4248 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4249 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4250 Since the code is newer, there might still be some new bugs
4251 (though not as many as before Martin Atzmueller's fixes:-). But
4252 the new code is substantially simpler and clearer, and hopefully
4253 any remaining bugs will be simpler, less fundamental, and more
4254 fixable then the bugs in the old code.
4255 ** The revised compiler is still a little unsteady on its feet.
4257 *** The debugging information it produces (particularly the names
4258 of FUNCTION objects) is sometimes much less useful than what
4259 the old compiler produced.
4260 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4261 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4262 within a MACROLET) has been temporarily weakened.
4263 ** There are new compiler optimizations for various functions:
4264 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4265 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4266 *** the math functions TRUNCATE, FLOOR, and CEILING
4267 *** the function-of-all-trades COERCE
4268 Mostly these should be transparent, but there's one
4269 potentially-annoying problem (bug 117): when the compiler
4270 inline-expands a function and does type analysis on the result,
4271 it can create control paths which have type mismatches, and
4272 when it can't prove that those control paths aren't taken,
4273 it will issue WARNINGs about the type mismatches. This is
4274 a particular problem in practice for the new sequence functions.
4275 It's not clear how this should be fixed, and for now, a
4276 workaround is given in the entry for 117 in the BUGS file.
4277 ** (Because of the interaction between the two previous items --
4278 occasional inlining problems and new inline expansions -- some
4279 of the new sequence function optimizations won't really kick in
4280 completely until debugging information, and then inlining, are
4281 straightened out in some future version.)
4282 * minor incompatible changes:
4283 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4284 DIRECTORY no longer implicitly promotes NIL slots of its
4285 pathname argument to :WILD. In particular, when you ask for the
4286 contents of a directory (which you used to be able to do without
4287 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4288 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4289 ** changes in behavior that ANSI explicitly defines to be
4290 implementation dependent:
4291 *** The new compiler-only implementation still conforms with ANSI,
4292 but acts a little different than before. Besides the obvious
4293 changes in performance tradeoffs (that the cost per form passed
4294 to EVAL has gone up, and the cost per form executed by EVAL
4295 has gone down), the behavior of the system changes a little
4296 because there are no longer any interpreted function objects.
4297 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4298 e.g. doing COMPILE on the output of interactive DEFUN is
4300 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4302 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4303 has changed from (:CL) to NIL.
4304 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4305 e.g. #\Newline and #\Tab, don't have names specified in the
4306 ANSI Common Lisp standard, is now based on their ASCII symbolic
4307 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4308 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4309 are no longer used for output.
4310 ** changes in internal implementation constants:
4311 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4312 4 million. (If your application spends a lot of time GCing and
4313 you have a lot of RAM, you might want to experiment with
4314 increasing it even more.)
4315 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4316 However, almost all old code should still continue to work without
4317 immediate update, as SB-C-CALL is now a (deprecated) nickname
4319 ** Old operator names in the style DEF-FOO are now deprecated in
4320 favor of new corresponding names DEFINE-FOO, for consistency with
4321 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4322 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4323 internal symbols, but a few supported extensions like
4324 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4325 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4326 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4327 etc. as you get deeper into recursive calls to the debugger
4328 command loop, instead of the old "5]", "5]]", "5]]]"
4329 sequence. (I was motivated to do this when squabbles between
4330 ILISP and SBCL left me very deeply nested in the debugger. In the
4331 short term, this change will probably provoke more ILISP/SBCL
4332 squabbles, but hopefully it will be an improvement in the long run.)
4333 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4334 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4335 function, since declaiming return types involving aliens is
4336 (1) annoyingly messy to do by hand and (2) vital to efficient
4337 compilation of code which calls such functions.
4338 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4339 longer reexported by the SB-EXT package. They're solely useful
4340 for alien code, so it seems more logical that you should get
4341 them from the SB-ALIEN package, not in SB-EXT.
4342 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4343 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4344 features. Instead, the code that they used to control is always
4345 built into the system.
4346 * many other bug fixes
4347 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4348 advantage of the new EVAL-WHEN stuff and to clean them up in
4349 general, and they are now more ANSI-compliant in a number of
4350 ways. Martin Atzmueller is responsible for a lot of this.
4351 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4353 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4354 *** correct ERROR type for various file operations
4355 *** some fixes for Lisp streams
4356 *** DEFMETHOD syntax checking
4357 *** changing old weird representation of debug information as
4358 strings (which, among their other deficiencies, don't transform
4359 correctly when you rename packages, and don't change their
4360 print representation when you change things like *PACKAGE*
4361 and *PRINT-LENGTH*) to symbols and lists of symbols
4362 He also made several improvements and fixed several bugs in DESCRIBE.
4363 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4365 *** misbehavior of WRITE-STRING/WRITE-LINE
4366 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4367 and several other LOOP problems as well
4368 *** DIRECTORY when similar filenames are present
4369 *** DEFGENERIC with :METHOD options
4370 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4371 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4372 *** argument ordering in FIND with :TEST option
4373 *** mishandled package designator argument in APROPOS-LIST
4374 *** various problems in the backquote readmacro
4375 *** a bug in APROPOS
4376 *** probably some others that I'm not describing very well here,
4377 since the CVS log documents them by reference to sbcl-devel
4378 messages, and the SourceForge archives aren't working well.:-(
4379 ** Dan Barlow improved the Alpha port (and is making progress on the
4380 PPC port, for those of you who think different).
4381 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4382 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4383 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4384 continues to work on the SPARC port (for those of you in a position
4385 to look down upon our little PC-compatible boxes from a great height).
4386 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4387 and uses that copy, rather than the current dynamic value, when
4388 it's trying to decide whether to truncate output. Thus e.g.
4389 (let ((*print-lines* 50))
4390 (pprint-logical-block (stream nil)
4392 (let ((*print-lines* 8))
4393 (print (aref possiblybigthings i) stream)))))
4394 should now truncate the logical block only at 50 lines, instead of
4395 often truncating it at 8 lines, as it did before.
4396 * The doc/cmucl/ directory, containing old CMU CL documentation
4397 from the time of the fork, is no longer part of the base system.
4398 SourceForge has shut down its anonymous FTP service, and with it
4399 my original plan for distributing the old CMU CL documentation
4400 there. For now, if you need these files you can download an old
4401 SBCL source release and extract them from it.
4402 * The fasl file version number changed again, for dozens of reasons,
4403 some of which are apparent above.
4405 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4406 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4407 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4408 patch, so that DISASSEMBLE output is much nicer.
4409 * The code in the SB-PROFILE package now seems reasonably stable.
4410 I still haven't decided what the final interface should look like
4411 (I'd like PROFILE to interact cleanly with TRACE, since both
4412 facilities use function encapsulation) but if you have a need
4413 for profiling now, you can probably use it successfully with
4414 the current CMU-CL-style interface.
4415 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4416 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4417 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4418 link now returns the dangling link itself, and for similar
4419 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4420 link itself. (In these cases the old code signalled an error and
4421 looped endlessly, respectively.) Thus, DIRECTORY now works even
4422 in the presence of dangling and cyclic symbolic links.
4423 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4424 is now a supported extension again, since the consensus on
4425 sbcl-devel was that it can be useful for ordinary development
4426 work, not just for debugging SBCL itself.
4427 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4428 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4429 that currently-defined functions might be redefined later with
4430 different return types.
4431 * Hash tables can be printed readably, as inspired by CMU CL code
4432 of Eric Marsden and SBCL code of Martin Atzmueller.
4433 * better error handling in CLOS method combination, thanks to
4434 Martin Atzmueller porting Pierre Mai's CMU CL patches
4435 * more overflow fixes for >16Mbyte I/O buffers
4436 * A bug in READ has been fixed, so that now a single Ctrl-D
4437 character suffices to cause end-of-file on character streams.
4438 In particular, now you only need one Ctrl-D at the command
4439 line (not two) to exit SBCL.
4440 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4442 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4443 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4444 does the right thing.
4445 * The implementation of some type tests, especially for CONDITION
4446 types, is now tidier and maybe faster, due to CMU CL code
4447 originally by Douglas Crosher, ported by Martin Atzmueller.
4448 * Some math functions have been fixed, and there are new
4449 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4450 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4451 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4452 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4453 likely to be built into sbcl-0.7.0.)
4454 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4455 CL, ported to SBCL by Martin Atzmueller)
4456 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4457 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4458 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4459 * There's a new slam.sh hack to shorten the edit/compile/debug
4460 cycle for low-level changes to SBCL itself, and a new
4461 :SB-AFTER-XC-CORE target feature to control the generation of
4462 the after-xc.core file needed by slam.sh.
4463 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4464 COMPILE-FILE is no longer supported, so that now every function
4465 gets an entry point, so that block compilation looks a little
4466 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4467 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4468 returns the number of bytes consed since the system started,
4469 rather than the number consed since the first time the function
4470 was called. (The new definition parallels ANSI functions like
4471 CL:GET-INTERNAL-RUN-TIME.)
4472 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4473 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4474 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4475 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4476 * Fasl file version numbers are now independent of the target CPU,
4477 since historically most system changes which required version
4478 number changes have affected all CPUs equally. Similarly,
4479 the byte fasl file version is now equal to the ordinary
4482 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4483 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4484 is no longer recognized. I apologize for this, because it was
4485 listed in SB-EXT as a supported extension, but I found that
4486 its existing behavior was poorly specified, as well as incorrectly
4487 specified, and it looked like too much of a mess to straighten it
4488 out. I have enough on my hands trying to get ANSI stuff to work..
4489 * many patches ported from CMU CL by Martin Atzmueller, with
4490 half a dozen bug fixes in pretty-printing and the debugger, and
4491 half a dozen others elsewhere
4492 * fixed bug 13: Floating point infinities are now supported again.
4493 They might still be a little bit flaky, but thanks to bug reports
4494 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4495 as flaky as they were.
4496 * The --noprogrammer command line option is now supported. (Its
4497 behavior is slightly different in detail from what the old man
4498 page claimed it would do, but it's still appropriate under the
4499 same circumstances that the man page talks about.)
4500 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4501 are now supported, and enabled by default. Thus, the compiler can
4502 handle many floating point and complex operations much less
4503 inefficiently. (Thus e.g. you can implement a complex FFT
4505 * The compiler now detects type mismatches between DECLAIM FTYPE
4506 and DEFUN better, and implements CHECK-TYPE more correctly, and
4507 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4508 thanks to patches from Martin Atzmueller.
4509 * various fixes to make the cross-compiler more portable to
4510 ANSI-conforming-but-different cross-compilation hosts (notably
4511 Lispworks for Windows, following bug reports from Arthur Lemmens)
4512 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4513 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4514 fixed thanks to Pierre Mai's CMU CL patches.
4515 * fixes to keep the system from overflowing internal counters when
4516 it tries to use i/o buffers larger than 16M bytes
4517 * fixed bug 45a: Various internal functions required to support
4518 complex special functions have been merged from CMU CL sources.
4519 (When I was first setting up SBCL, I misunderstood a compile-time
4520 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4521 * improved support for type intersection and union, fixing bug 12
4522 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4523 more obscure bugs as well
4524 * some steps toward byte-compiling non-performance-critical
4525 parts of the system, courtesy of patches from Martin Atzmueller
4526 * Christophe Rhodes has made some debian packages of sbcl at
4527 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4528 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4529 stable, but are nonetheless usable. When he's ready, I'd be happy
4530 to add them to the SourceForge "File Releases" section. (And if
4531 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4532 * new fasl file format version number (because of changes in
4533 internal representation of (OR ..) types to accommodate the new
4534 support for (AND ..) types, among other things)
4536 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4537 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4539 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4541 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4542 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4543 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4544 * DESCRIBE now works on structure objects again.
4545 * Most function call argument type mismatches are now handled as
4546 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4547 know whether the function will be redefined before the call is
4548 executed. (The compiler could flag local calls with full WARNINGs,
4549 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4550 it doesn't keep track of enough information to know whether calls
4551 are local in this sense.)
4552 * Compiler output is now more verbose, with messages truncated
4553 later than before. (There should be some supported way for users
4554 to override the default verbosity, but I haven't decided how to
4555 provide it yet, so this behavior is still controlled by the internal
4556 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4557 src/compiler/ir1util.lisp.)
4558 * Fasl file format version numbers have increased again, because
4559 support for the Gray streams extension changes the layout of the
4560 system's STREAM objects.
4561 * The Gray subclassable streams extension now works, thanks to a
4562 patch from Martin Atzmueller.
4563 * The full LOAD-FOREIGN extension (not just the primitive
4564 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4565 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4566 but like most other programs, it defaults to copying the Unix
4567 environment from the original process instead of starting the
4568 new process in an empty environment.
4569 * Extensions which manipulate the Unix environment now support
4570 an :ENVIRONMENT keyword option which doesn't smash case or
4571 do other bad things. The CMU-CL-style :ENV option is retained
4572 for porting convenience.
4573 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4574 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4576 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4578 * A patch from Martin Atzmueller seems to have solved the SIGINT
4579 problem, and as far as we know, signal-handling now works cleanly.
4580 (If you find any new bugs, please report them!)
4581 * The system no longer defaults Lisp source file names to types
4582 ".l", ".cl", or ".lsp", but only to ".lisp".
4583 * The compiler no longer uses special default file extensions for
4584 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4585 seems to expect a single default extension for all compiled code,
4586 and there's no compelling reason to try to stretch the standard
4587 to allow two different extensions.) Instead, byte-compiled files
4588 default to the same extension as native-compiled files.
4589 * Fasl file format version numbers have increased again, because
4590 a rearrangement of internal implementation packages made some
4591 dumped symbols in old fasl files unreadable in new cores.
4592 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4593 many fewer weird special cases.
4594 * Bug #17 (differing COMPILE-FILE behavior between logical and
4595 physical pathnames) has been fixed, and some related misbehavior too,
4596 thanks to a patch from Martin Atzmueller.
4597 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4598 by Tim Moore, ported to SBCL by Martin Atzmueller.
4599 * Martin Atzmueller fixed several filesystem-related problems,
4600 including bug #36, in part by porting CMU CL patches, which were
4601 written in part by Paul Werkowski.
4602 * More compiler warnings in src/runtime/ are gone, thanks to
4603 more patches from Martin Atzmueller.
4604 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4607 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4609 * DESCRIBE now works on CONDITION objects.
4610 * The debugger now handles errors which arise when trying to print
4611 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4613 * The build system now uses an additional file, customize-target-features.lisp,
4614 to allow local modifications to the target *FEATURES* list. (The point of
4615 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4616 debugging features enabled, without having to worry about propagating it
4617 into everyone's system when I do a "cvs update".) When no
4618 customize-target-features.lisp file exists, the target *FEATURES* list
4619 should be constructed the same way as before.
4620 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4621 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4622 warn about behavior which is undefined under the ANSI spec. Note: This
4623 is specified by ANSI, but it's not very popular with programmers.
4624 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4625 macro in the SBCL sources for an example of a workaround which you
4626 might use to make portable ANSI-standard code which does what you want.
4627 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4628 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4629 when it's used as a non-toplevel form. (This is required in order
4630 to implement the DEFCONSTANT-EQX macro.)
4631 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4632 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4633 funny things, due to bugs in the implementation of EVAL-WHEN
4634 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4635 non-toplevel DEFCONSTANTs are uncommon.)
4636 * The core file version number and fasl file version number have been
4637 incremented, because the old noncompliant DEFCONSTANT behavior involved
4638 calling functions which no longer exist, and because I also took the
4639 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4640 * fixed bug 1 (error handling before read-eval-print loop starts), and
4641 redid debugger restarts and related debugger commands somewhat while
4643 ** The QUIT debugger command is gone, since it did something
4644 rather different than the SB-EXT:QUIT command, and since it never
4645 worked properly outside the main toplevel read/eval/print loop.
4646 Invoking the new TOPLEVEL restart provides the same functionality.
4647 ** The GO debugger command is also gone, since you can just invoke
4648 the CONTINUE restart directly instead.
4649 ** The TOP debugger command is also gone, since it's redundant with the
4650 FRAME 0 command, and since it interfered with abbreviations for the
4652 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4654 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4655 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4656 some porting work by Martin Atzmueller)
4657 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4658 with a boatload of patches which he ported to SBCL. Now that those
4660 ** The system tries to make sure that its low-priority messages
4661 are prefixed by semicolons, to help people who like to use
4662 syntax highlighting in their ILISP buffer. (This patch
4663 was originally due to Raymond Toy.)
4664 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4665 patches originally written by Raymond Toy.
4666 ** The compiler understands coercion between single-value and
4667 multiple-VALUES type expressions better, getting rid of some very
4668 weird behavior, thanks to patches originally by Robert MacLachlan
4669 and Douglas Crosher.
4670 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4671 lambda lists, thanks to a patch originally by Pierre Mai.
4672 ** The system no longer bogusly warns about "abbreviated type
4674 ** The compiler gets less confused by inlining and RETURN-FROM,
4675 thanks to some patches originally by Tim Moore.
4676 ** The system no longer hangs when dumping circular lists to fasl
4677 files, thanks to a patch originally from Douglas Crosher.
4678 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4679 undefined function error.
4680 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4681 in structure slot initforms) for now, documented workaround instead:-|
4682 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4683 * fixed bug 5: added stubs for various Gray stream functions called
4684 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4685 installed, at least appropriate type errors are generated
4686 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4687 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4688 consistently in DEFMETHOD forms.
4689 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4690 it doesn't seem to affect SBCL after all
4691 * The C runtime system now builds with better optimization and many
4692 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4694 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4696 * The system is now under CVS at SourceForge (instead of the
4697 CVS repository on my home machine).
4698 * The new signal handling code has been tweaked to treat register
4699 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4700 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4701 downstream, e.g. in debug-int.lisp, has implicit dependencies
4702 on the unsignedness of integer representation of machine words,
4703 and that caused the system to bomb out with infinite regress
4704 when trying to recover from type errors involving signed values,
4705 e.g. (BUTLAST '(1 2 3) -1).)
4706 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4707 (This was one of the bugs Peter Van Eynde reported back in July.)
4708 * The system now uses code inspired by Colin Walters' O(N)
4709 implementation of MAP (from the cmucl-imp@cons.org mailing
4710 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4711 inline the MAP operation, and there is more than one
4712 sequence argument to the MAP call (so that it can't just
4713 do ETYPECASE once and for all based on the type of the
4714 single sequence argument). (The old non-inline implementation
4715 of the general M-argument sequence-of-length-N case required
4716 O(M*N*N) time when any of the sequence arguments were LISTs.)
4717 * The QUIT :UNIX-CODE keyword argument has been renamed to
4718 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4719 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4721 * Raymond Wiker's patches to port dynamic loading from Linux to
4722 FreeBSD have been added.
4723 * The BUGS file is now more nearly up to date, thanks in large part
4724 to Martin Atzmueller's review of it.
4725 * The debugger now flushes standard output streams before it begins
4726 its output ("debugger invoked" and so forth).
4727 * The core version number and fasl file version number have both
4728 been incremented, because of incompatible changes in the layout
4730 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4731 used to not be called for a saved Lisp image.)
4732 * Martin Atzmueller's version of a patch to fix a compiler crash,
4733 as posted on sbcl-devel 13 September 2000, has been installed.
4734 * Instead of installing Martin Atzmueller's patch for the
4735 compiler transform for SUBSEQ, I deleted the compiler transform,
4736 and transforms for some similar consing operations.
4737 * A bug in signal handling which kept TRACE from working on OpenBSD
4739 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4740 away by constant folding
4741 * The system now defines its address space constants in one place
4742 (in the Lisp sources), and propagates them automatically elsewhere
4743 (through GENESIS and the sbcl.h file). Therefore, patching the
4744 address map is less unnecessarily tedious and error-prone. The
4745 Lisp names of address space constants have also been systematized.
4746 * CVS tags like dollar-Header-dollar have been removed from
4747 the sources, because they have never saved me trouble and
4748 they've been source of trouble working with patches and other
4749 diff-related operations.
4750 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4751 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4753 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4755 * The system has been ported to OpenBSD.
4756 * The system now compiles with a simple "sh make.sh" on the systems
4757 that it's supported on. I.e., now you no longer need to tweak
4758 text in the target-features.lisp-expr and symlinks in src/runtime/
4759 by hand, the make.sh takes care of it for you.
4760 * The system is no longer so grossly inefficient when compiling code
4761 involving vectors implemented as general (not simple) vectors (VECTOR T),
4762 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4763 which dares to use the various sequence functions on non-simple
4764 vectors, takes less of a performance hit.
4765 * There is now a primitive type predicate VECTOR-T-P
4766 to test for the (VECTOR T) type, so that e.g.
4767 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4768 can now be compiled with some semblance of efficiency. (The old code
4769 turned the type declaration into a full call to %TYPEP at runtime!)
4770 * AREF on (VECTOR T) is still not fast, since it's still compiled
4771 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4772 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4773 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4774 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4775 without making full calls to SUBTYPEP at runtime.
4776 (Some analogous efficiency issues for non-simple vectors specialized to
4777 element types other than T, or for non-simple multidimensional arrays,
4778 have not been addressed. They could almost certainly be handled the
4779 same way if anyone is motivated to do so.)
4780 * The changes in array handling break binary compatibility, so
4781 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4782 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4783 instead of (VALUES T T).
4784 * By following the instructions that Dan Barlow posted to sbcl-devel
4785 on 2 July 2000, I was able to enable primitive dynamic object
4786 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4787 functionality is not implemented (since it calls ld to resolve
4788 library references automatically, requiring RUN-PROGRAM for its
4789 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4790 try to resolve library references) is now supported.
4791 * The system now flushes the standard output streams when it terminates,
4792 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4793 them at several other probably-convenient times, e.g. in each pass of
4794 the toplevel read-eval-print loop, and after evaluating a form given
4795 as an "--eval" command-line option. (These changes were motivated by a
4796 discussion of stream flushing issues on cmucl-imp in August 2000.)
4797 * The source transform for TYPEP of array types no longer assumes
4798 that an array whose element type is a not-yet-defined type
4799 is implemented as an array of T, but instead punts, so that the
4800 type will be interpreted at runtime.
4801 * There is now some support for cross-compiling in make.sh: each of
4802 the phases of make.sh has its own script. (This should be transparent
4803 to people doing ordinary, non-cross-compile builds.)
4804 * Since my laptop doesn't have hundreds of megabytes of memory like
4805 my desktop machine, I became more motivated to do some items on
4806 my to-do list in order to reduce the size of the system a little:
4807 ** Arrange for various needed-only-at-cold-init things to be
4808 uninterned after cold init. To support this, those things have
4809 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4810 symbols with such names are now uninterned after cold init).
4811 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4812 fasl files for cold load.
4813 ** Remove the old compiler structure pooling code (which used to
4814 be conditional on the target feature :SB-ALLOC) completely.
4815 ** Redo the representation of some data in cold init to be more compact.
4816 (I also looked into supporting byte compiled code at bootstrap time,
4817 which would probably reduce the size of the system a lot, but that
4818 looked too complicated, so I punted for now.)
4819 * The maximum signal nesting depth in the src/runtime/ support code has
4820 been reduced from 4096 to 256. (I don't know any reason for the very
4821 large old value. If the new smaller value turns out to break something,
4822 I'll probably just bump it back up.)
4823 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4825 * Many, many bugs reported by Peter Van Eynde have been added to
4826 the BUGS list; some have even been fixed.
4827 * While enabling dynamic object file loading, I tried to make the
4828 code easier to understand, renaming various functions and variables
4829 with less ambiguous names, and changing some function calling
4830 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4831 * While trying to figure out how to do the OpenBSD port, I tried to
4832 clean up some of the code in src/runtime/. In particular, I dropped
4833 support for non-POSIX signal handling, added various comments,
4834 tweaked the code to reduce the number of compilation warnings, and
4835 renamed some files to increase consistency.
4836 * To support the new automatic configuration functionality in make.sh,
4837 the source file target-features.lisp-expr has been replaced with the
4838 source file base-target-features.lisp-expr and the machine-generated
4839 file local-target-features.lisp-expr.
4840 * fixed a stupid quoting error in make.sh so that using CMU CL
4841 "lisp -batch" as cross-compilation host works again
4843 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4845 * DESCRIBE no longer tries to call itself recursively to describe
4846 bound/fbound values, so that it no longer fails on symbols which are
4847 bound to themselves (like keywords, T, and NIL).
4848 * DESCRIBE now works on generic functions.
4849 * The printer now prints less-screwed-up representations of closures
4850 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4851 * A private symbol is used instead of the :EMPTY keyword previously
4852 used to mark empty slots in hash tables. Thus
4853 (DEFVAR *HT* (MAKE-HASH-TABLE))
4854 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4855 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4856 now does what ANSI says that it should. (You can still get
4857 similar noncompliant behavior if bang on the hash table
4858 implementation with all the symbols you get back from
4859 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4860 This breaks binary compatibility, since tests for equality to
4861 :EMPTY are wired into things like the macroexpansion of
4862 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4864 * There's now a minimal placeholder implementation for CL:STEP,
4865 as required by ANSI.
4866 * An obscure bug in the interaction of the normal compiler, the byte
4867 compiler, inlining, and structure predicates has been patched
4868 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4869 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4871 * Missing ordinary arguments in a macro call are now detected even
4872 when the macro lambda list contains &KEY or &REST.
4873 * The debugger no longer complains about encountering the top of the
4874 stack when you type "FRAME 0" to explicitly instruct it to go to
4875 the top of the stack. And it now prints the frame you request even
4876 if it's the current frame (instead of saying "You are here.").
4877 * As specified by ANSI, the system now always prints keywords
4878 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4880 * The default initial SIZE of HASH-TABLEs is now smaller.
4881 * Type information from CLOS class dispatch is now propagated
4882 into DEFMETHOD bodies, so that e.g.
4883 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4885 is now basically equivalent to
4886 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4887 (DECLARE (TYPE SINGLE-FLOAT X))
4889 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4890 operation, without having to do run-time type dispatch.
4891 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4892 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4893 * Since I don't seem to be making big file reorganizations very often
4894 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4895 is overflowing my ability to conveniently back them up), I've finally
4896 checked the system into CVS. (The CVS repository is on my home system,
4897 not at SourceForge -- putting it on SourceForge might come later.)
4898 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4899 high-level GC-NOTIFY-FOO functions send their output. (There's
4900 still very little control of where low-level verbose GC functions
4901 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4902 less than it used to -- the GC-NOTIFY-FOO functions are now under
4903 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4904 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4905 in only one place in the source code, and propagates it automatically
4906 everywhere that it's needed. Thus e.g. when I bump the version from
4907 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4908 * The C source files now include boilerplate legalese and documentation
4909 at the head of each file (just as the Lisp source files already did).
4910 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4911 to his page will be replaced with a link to his new CLiki service.
4913 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4915 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4916 * The build process now looks for GNU make under the default name "gmake",
4917 instead of "make" as it used to. If GNU make is not available as "gmake"
4918 on your system, you can change this default behavior by setting the
4919 GNUMAKE environment variable.
4920 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4921 can build without error under CMU CL.
4923 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4925 * There is now a partial SBCL user manual (with some new text and some
4926 text cribbed from the CMU CL manual).
4927 * The beginnings of a profiler have been added (starting with the
4928 CMU CL profiler and simplifying and cleaning up). Eventually the
4929 main interface should be through the TRACE macro, but for now,
4930 it's still accessed through vaguely CMU-CL-style functions and macros
4931 exported from the package SB-PROFILE.
4932 * Some problems left over from porting CMU CL to the new
4933 cross-compilation bootstrap process have been cleaned up:
4934 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4935 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4936 part when getting rid of the compiler *BACKEND* stuff.)
4937 ** The value of *NULL-TYPE* was screwed up, because it was
4938 being initialized before the type system knew the final
4939 definition of the 'NULL type. This screwed up several key
4940 optimizations in the compiler, causing inefficiency in all sorts
4941 of places. (I found it because I wanted to understand why
4942 GET-INTERNAL-RUN-TIME was consing.)
4943 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4944 PROCLAIM FTYPE information. Unfortunately this broke binary
4945 compatibility again, since now the forms output by DEFGENERIC
4946 to refer to functions which didn't exist in 0.6.3.
4947 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4948 can use the new (as of 0.6.3) transform for SOME into MAP into
4950 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4951 values to (INTEGER 0 1000000), so that the time code will no longer
4952 occasionally get blown up by Linux returning 1000000 microseconds
4953 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4954 its output conform to the ANSI spec. (Alas, this makes its output
4955 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4956 * A full call to MAP NIL with a single sequence argument no longer conses.
4957 * fixes to problems pointed out by Martin Atzmueller:
4958 * The manual page no longer talks about multiprocessing as though
4959 it were currently supported.
4960 * The ILISP support patches have been removed from the distribution,
4961 because as of version 5.10.1, ILISP now supports SBCL without us
4962 having to maintain patches.
4963 * added a modified version of Raymond Toy's recent CMU CL patch for
4964 EQUALP comparison of HASH-TABLE
4966 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4968 * The system still can't cross-compile itself with
4969 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4970 entails), but at least it can compile more of itself that way
4971 than it used to be able to, and various buglets which were uncovered
4972 by trying to cross-compile itself that way have now been fixed.
4973 * This release breaks binary compatibility again. This time
4974 at least I've incremented the FASL file format version to 2, so that the
4975 problem can be detected reliably instead of just causing weird errors.
4976 * various new style warnings:
4977 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4978 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4979 ** using the lexical binding of a variable named in the *FOO* style
4980 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4981 as specified by ANSI.
4982 * *RANDOM-STATE* is no longer automatically initialized from
4983 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4984 default behavior of the system is to repeat its behavior every time
4985 it's run. If you'd like to change this behavior, you can always
4986 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4987 old convention there was no comparably easy way to get the system to
4988 repeat its behavior every time it was run.
4989 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4990 FTYPE declarations has been removed, in favor of their ANSI
4991 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4992 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4993 the types of their sequence arguments can be determined at compile time.
4994 This is done through a new open code expansion for MAP which eliminates
4995 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4996 argument types can be determined at compile time.
4997 * The optimizer now transforms COERCE into an identity operation when it
4998 can prove that the coerced object is already of the correct type. (This
4999 can be a win for machine generated code, including the output of other
5000 optimization transforms, such as the MAP transform above.)
5001 * Credit information has been moved from source file headers into CREDITS.
5002 * Source file headers have been made more standard.
5003 * The CASE macro now compiles without complaining even when it has
5006 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5008 * (Note that the way that the PCL macroexpansions were rewritten
5009 to accommodate the change in DEFGENERIC below breaks binary
5010 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5011 not run under sbcl-0.6.2. Once we get out of alpha releases,
5012 i.e. hit release 1.0.0, we'll probably try to maintain binary
5013 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5014 and sbcl-1.4.4. Until then, however, it might be fairly common
5015 for maintenance releases to break binary compatibility.)
5016 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5018 * The reporting of unhandled signals has been changed to print some
5019 explanatory text as well as the report form. (Previously only
5020 the report form was printed.)
5021 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5022 it defines, so that the compiler no longer issues undefined function
5023 warnings for compiled-but-not-yet-loaded generic functions.
5024 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5025 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5026 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5027 section of the ANSI spec are supported.
5028 * The "" nickname for the "KEYWORD" package has been removed.
5029 The reader still handles symbol tokens which begin with a package marker
5030 as keywords, but it doesn't expose its mechanism for doing so in the
5031 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5032 * The system now issues STYLE-WARNINGs for contradictory TYPE
5033 proclamations. (Warnings for contradictory FTYPE proclamations would
5034 be nice too, but those can't be done usefully unless the type system
5035 is made smarter about FUNCTION types.)
5036 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5037 systematized, so that "*target-*.lisp is supposed to exist only on the
5038 target and imply that there's a related file which exists on the
5039 host, and *host-*.lisp is supposed to exist only on the host and imply
5040 that there's a related file which exists on the target. This involves a
5041 lot of renaming. Hopefully the acute confusion caused by the renaming
5042 will be justified by the reduction in chronic confusion..
5043 ** runtime-type.lisp -> early-target-type.lisp
5044 ** target-type.lisp -> late-target-type.lisp
5045 ** early-host-format.lisp -> early-format.lisp
5046 ** late-host-format.lisp -> late-format.lisp
5047 ** host-error.lisp -> misc-error.lisp
5048 ** early-error.lisp -> early-target-error.lisp
5049 ** late-error.lisp -> late-target-error.lisp
5050 ** host-defboot.lisp -> early-defboot.lisp
5051 ** code/misc.lisp -> code/target-misc.lisp
5052 ** code/host-misc.lisp -> code/misc.lisp
5053 ** code/numbers.lisp -> code/target-numbers.lisp
5054 ** code/early-numbers.lisp -> numbers.lisp
5055 ** early-host-type.lisp -> early-type.lisp
5056 ** late-host-type.lisp -> late-type.lisp
5057 ** host-typep.lisp -> typep.lisp
5058 ** load.lisp -> target-load.lisp
5059 ** host-load.lisp -> load.lisp
5060 ** host-disassem.lisp -> disassem.lisp
5061 ** host-insts.lisp -> insts.lisp
5062 ** byte-comp.lisp -> target-byte-comp.lisp
5063 ** host-byte-comp.lisp -> byte-comp.lisp
5064 ** host-signal.lisp -> signal.lisp
5065 ** host-defstruct.lisp -> defstruct.lisp
5066 ** late-target-type.lisp -> deftypes-for-target.lisp
5067 Furthermore, several other previously target-only files foo.lisp (e.g.
5068 hash-table.lisp and random.lisp) have been split into a target-and-host
5069 foo.lisp file and a target-only target-foo.lisp file, with their key type
5070 definitions in the target-and-host part, so that the cross-compiler will
5071 know more about target types.
5072 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5073 gone away. In their place are various *BACKEND-FOO* variables
5074 corresponding to the slots of the old structure.
5075 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5076 into the target SBCL has been fixed.
5077 * The chill.lisp system for loading cold code into a running SBCL
5079 * Support for the CMU CL "scavenger hook" extension has been removed.
5080 (It was undocumented and unused in the CMU CL sources that SBCL was
5081 derived from, and stale in sbcl-0.6.1.)
5082 * Various errors in the cross-compiler type system were detected
5083 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5084 (enabling various consistency checks). Many of them were fixed,
5085 but some hard problems remain, so the compiler is back to
5086 running without *TYPE-SYSTEM-INITIALIZED* for now.
5087 * As part of the cross-compiler type system cleanup, I implemented
5088 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5089 * I have started adding UNCROSS calls throughout the type system
5090 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5091 on cross-compiler input files will be able to go away, and various
5093 * CONSTANTP now returns true for quoted forms (as explicitly required
5096 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5098 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5099 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5100 (MAKE-LIST -1). In the longer term, it ought to become true
5101 that declarations are assertions even at SAFETY 1. For now, it's not
5102 quite true even at SAFETY 3, but it's at least more nearly true..
5103 (Note that this change seems to increases the size of the system by
5104 O(5%) and to decrease the speed of the compiler by 20% or more.)
5105 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5106 for the problem of printing dozens of lines of distracting information
5107 about low-level system machinery as part of the top stack frame
5108 on entry to the debugger when an undefined function was called.
5109 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5110 is not reset to COMMON-LISP-USER.
5111 * Compilation of stuff related to dyncount.lisp has been made conditional
5112 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5113 smaller. The various dyncount-related symbols have been moved into
5114 a new "SB-DYNCOUNT" package.
5115 * tty-inspect.lisp has been renamed to inspect.lisp.
5116 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5117 feature has gone away. (When we eventually port to other flavors of
5118 libc and/or Unix, we'll try to make the differences between flavors
5119 invisible at the user level.)
5120 * Various other *FEATURES* tags, and/or their associated conditionals,
5121 have been removed if obsolescent, or given better documentation, or
5122 sometimes given more-mnemonic names.
5124 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5126 * tidied up "make.sh" script
5127 * tidied up system directory structure
5128 * better "clean.sh" behavior
5129 * added doc/FOR-CMUCL-DEVELOPERS
5130 * many many small tweaks to output format, e.g. removing possibly-confusing
5131 trailing #\. character in DESCRIBE-INSTANCE
5132 * (EQUALP #\A 'A) no longer signals an error.
5133 * new hashing code, including EQUALP hashing
5134 * tidied up Lisp initialization and toplevel
5135 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5136 * command line argument processing
5137 * added POSIX-GETENV function to deal with Unix-ish environment variables
5138 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5139 terminating SBCL on EOF
5140 * non-verbose GC by default
5141 * There is no more "sbcl" shell script; the sbcl file is now the C
5142 runtime executable (just like CMU CL).
5143 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5145 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5146 symbol and package information as Lisp native symbol and package objects
5147 instead of strings naming symbols and strings naming packages. This way,
5148 whenever packages are renamed (as in warm init), debug information is
5149 transformed along with everything else.
5150 * tweaked the optimization policy declarations which control the building
5151 of SBCL itself. Now, among other things, the system no longer saves
5152 source location debugging information. (This helps two problems at once
5153 by reducing SBCL size and by keeping SBCL from trying to look for its
5154 sources -- which may not exist -- when reporting errors.)
5155 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5156 debugging and testing purposes
5157 * cleaned up printing, making the printer call PRINT-OBJECT for
5158 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5159 methods, giving nearly-ANSI behavior
5160 * converted almost all special variables to use *FOO* naming convention
5161 * deleted PARSE-TIME functionality, since it can be done portably
5162 * moved some files out of cold init into warm init
5163 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5165 * regularized formatting of source files
5166 * added an install.sh script
5167 * fixed ridiculous memory usage of cross-compiler by making
5168 compiler/alloc.lisp not try to do pooling unless it can hook
5169 itself into the GC of the cross-compilation host. Now the system
5170 builds nicely on my old laptop.
5171 * added :SB-ALLOC in target-features.lisp-expr
5172 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5173 was not implemented)
5174 * re-did condition handling and note reporting in the compiler. Notes
5175 are no longer handled by signalling conditions. Style warnings
5176 and warnings are handled more correctly and reported in such a way
5177 that it's easy to find one or the other in your output (so that you
5178 can e.g. figure out which of many problems caused COMPILE-FILE to
5180 * changed the severity of several compiler warnings from full WARNING
5181 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5182 compiler note reporting so that it doesn't use the condition system
5183 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5184 COMPILE-FILE command)
5185 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5186 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5187 no longer supported, since their implementation was deeply intertwingled
5188 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5189 * removed bogus "support" for compiler macros named (SETF FOO), and
5190 removed the compiler macro for SETF INFO (but only after making a fool
5191 of myself on the cmucl-imp mailing list by posting a bogus patch for
5192 DEFINE-COMPILER-MACRO..)
5193 * Compiled files containing forms which have side effects on the Lisp
5194 reader (such as DEFPACKAGE forms) are now handled more correctly.
5195 (Compiler queuing of top level lambdas has been suppressed by setting
5196 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5197 * deleted various currently-unused source files, e.g. gengc.lisp. They
5198 may be added back at some point e.g. when porting to other architectures,
5199 but until they are it's distracting to distribute them and to try to
5201 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5202 there were so many of them they're just distractions, and UNCROSS is
5203 known to be able to handle the current sources
5204 * moved PROFILE functionality into TRACE, so that it will be clear
5205 how the wrapping and unwrapping of functions when you profile them
5206 interacts with the wrapping and unwrapping of functions when you
5207 trace them. (Actually, the functionality isn't there yet, but at least
5208 the interface specification is there. Hopefully, the functionality will
5209 arrive with some future maintenance release.)
5210 * removed host-oops.lisp
5211 * changed signature of QUIT function to allow UNIX-CODE argument
5212 * fixed READ-SEQUENCE bug
5213 * tweaked verbose GC output so that it looks more like the progress
5214 output that ANSI specifies for functions like LOAD
5215 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5216 * added <http://sbcl.sourceforge.com> to the banner information printed by