1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.25 relative to 1.0.24:
3 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
4 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
5 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
6 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
7 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
8 better name and does not return values so stale on multiprocessor systems.
9 Also, HOLDING-MUTEX-P was added for about the only sane usage of
11 * improvement: unithread builds keep track of MUTEX-VALUE.
12 * improvement: reading from a TWO-WAY-STREAM does not touch the output
13 stream anymore making it thread safe to have a concurrent reader and
14 a writer, for instance, in a pipe.
15 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
16 arguments, making compiler-macros for SETF-functions able to inspect
17 their constant arguments.
18 * improvement: COMPILE-FILE reports times with millisecond accuracy
19 (thanks to Luis Oliveira)
20 * optimization: CHAR-CODE type derivation has been improved, making
21 TYPEP elimination on subtypes of CHARACTER work better. (reported
22 by Tobias Rittweiler, patch by Paul Khuong)
23 * bug fix: setting alien structure fields of type struct by value now
24 computes the right offset for the memory copy.
25 * bug fix: compilation problem involving inlined calls to aliens with
26 result type VOID. (reported by Ken Olum)
27 * bug fix: #235a; sequential inline expasion in different policies no
28 longer reuses the functional from the previous expansion site.
29 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
30 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
31 * bug fix: named ENUMs in multiply-referenced alien record types no longer
32 cause an implied type redefinition. Regression from 1.0.21.29.
33 * bug fix: sign-extension of small signed return values now works with C
34 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
35 * improvements to the Windows port:
36 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
37 Westfold, thanks to Rudi Schlatte)
39 changes in sbcl-1.0.24 relative to 1.0.23:
40 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
41 vector of a multidimensional SIMPLE-ARRAY.
42 * new feature: the system now signals a continuable error if standard
43 readtable modification is attempted. (thanks to Tobias Rittweiler)
44 * new feature: DIRECTORY has been extended with a non-standard keyword
45 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
46 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
47 has been robustified and documented better. (thanks to Robert Goldman)
48 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
49 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
50 * tradeoff: constant FORMAT control strings are now compiled unless
51 SPACE > SPEED (previously only when SPEED > SPACE.)
52 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
54 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
56 * bug fix: lexical type declarations are now correctly reported by
57 SB-CLTL2. (reported by Larry D'Anna)
58 * bug fix: STRING-TO-OCTETS did not handle :START properly when
59 using UTF-8 as external format. (thanks to Luis Oliveira)
60 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
61 are signalled correctly. (thanks to Stas Boukarev)
62 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
63 designator. (thanks to Tobias Rittweiler)
64 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
65 designator, and returns T instead of the function. (thanks to
67 * bug fix: direct superclasses of STANDARD-CLASS and
68 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
69 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
70 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
71 when no class with the named slot yet exists no longer causes a
72 compile-time style-warning.
73 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
74 in safe code. (reported by Didier Verna)
75 * bug fix: #430; nested structure constructors can stack allocate.
76 * bug fix: on some 64-bit platforms dynamic space size was truncated
77 to #xffff0000 bytes. (reported by Benjamin Lambert)
78 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
79 REPL unusable. (reported by Daniel Herring)
80 * bug fix: return values of READ-SEQUENCE did not take :START into
81 account on file streams, regressions since 1.0.12.22. (reported by
82 Thomas Russ, patch by Paul Khuong)
83 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
84 method specializer used to confuse permuation vector optimization.
85 * bug fix: system inserted bogus implicit type declarations for local
86 special variables in DEFMETHOD bodies.
87 * bug fix: #354; duplicated frames in backtraces due to
88 non-tail-call-optimized XEPs to functions with return type NIL
90 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
91 initializes structure object slots according to DEFSTRUCT initforms,
92 and DEFSTRUCT forms :INCLUDEind structure classes defined using
93 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
94 (reported by Bruno Haible and Stephen Wilson)
95 * bug fix: #395; fill-pointer output streams used now support
96 element-type BASE-CHAR as well.
97 * bug fix: compiler error when attempting to derive return value of
98 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
100 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
102 * bug fix: Mac OS X binaries should now be portable between Leopard
105 changes in sbcl-1.0.23 relative to 1.0.22:
106 * enhancement: when disassembling method functions, disassembly
107 for the associated fast function is also produced.
108 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
110 * optimization: printing with *PRINT-PRETTY* true is now more
111 efficient as long as the object being printed doesn't require
112 special handling by the pretty printer.
113 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
114 now interact correctly with type declarations.
115 * partial bug fix: PCL detects infinite recursion during wrapper
116 validation. (thanks to Attila Lendvai)
117 * bug fix: #426; nested function calls are inlined properly.
118 Previously if FOO was an inline function, in calls of the form
119 (FOO (FOO ...)) the outer call was not inlined.
120 * bug fix: long long arguments passed in registers to alien
121 functions on PowerPC Linux and NetBSD are now handled correctly
122 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
124 changes in sbcl-1.0.22 relative to 1.0.21:
125 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
126 for the shared object in the current directory, but passes the native
127 namestring of the designated pathname to the operation system's shared
128 object loading function as-it.
129 * minor incompatible change: --disable-debugger toplevel option now takes
130 effect before processing of initialization files and --eval or --load
132 * new feature: new commandline argument: --script, which supports
133 shebang lines. See documentation for details. (based on work by
135 * new feature: SAVE-LISP-AND-DIE can save current values of
136 --dynamic-space-size and --control-stack-size in the executable core,
137 causing it to skip normal runtime option processing. See documentation
138 for details. (thanks to Zach Beane)
139 * enhancement: inoccous calls to EVAL or generic functions dispatching
140 on subclasses of eg. STREAM no longer cause compiler notes to appear.
141 * enhancement: the system no longer resignals errors from --load and
142 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
143 associated with the original error to be lost. (thanks to Ariel
145 * enhancement: :DONT-SAVE keyword argument has been added to
146 LOAD-SHARED-OBJECT for controlling interaction with
147 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
148 the effects of an earlier LOAD-SHARED-OBJECT call.
149 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
150 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
151 provided. (reported by Cedric St-Jean)
152 * bug fix: circularity handling in the reader did not treat raw
153 structure slots correctly. (reported by Cedric St-Jean)
154 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
155 file descriptors when there were none.
156 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
157 was broken. (reporteed by Willem Broekema)
158 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
159 pathnames without a directory.
160 * bug fix: COMPILE-FILE did not warn about undefined variable
161 references at toplevel, and LOAD of the resulting fasl did
163 * bug fix: functions with non-required arguments used to end up with
164 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
165 * bug fix: redefining a function with non-required arguments didn't
166 update the system's knowledge about its call signature properly.
167 * bug fix: fixed #431; incompatible alien record type redefinitions
168 are detected and handled. (reported by Neil Haven)
169 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
170 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
172 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
173 after alien stack frames.
174 * bug fix: strings passed to mk{s,d}temp lacked null termination
176 changes in sbcl-1.0.21 relative to 1.0.20:
177 * new feature: the compiler is able to track the effective type of a
178 generic function across method addition and removal.
179 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
180 appropriately typed structure slots without locking.
181 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
182 information like those gathered by TIME using a programming-friendly
184 * new feature: TIME reports time taken even if the form performs a
185 non-local transfer of control.
186 * enhancement: reduced conservativism on GENCGC platforms: on
187 average 45% less pages pinned (measured from SBCL self build).
188 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
189 mutate constant symbols or violate declaimed type of the symbol.
190 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
191 sleeping on the semaphore in heavily contested semaphores.
192 * bug fix: semaphores and condition variables were not interrupt
194 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
195 owned by other threads anymore.
196 * bug fix: FIND on lists called KEY outside the specified
197 subsequence. (reported by budden)
198 * bug fix: LOG doesn't use single-float intermediate results when
199 given mixed integer and double-float arguments, leading to better
200 precision. (reported by Bob Felts)
201 * bug fix: LOG with base zero returned values of inconsistent type.
203 changes in sbcl-1.0.20 relative to 1.0.19:
204 * minor incompatible change: OPTIMIZE qualities
205 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
206 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
207 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
208 * documentation: some slot access efficiency guidelines have been
209 added to the user manual.
210 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
211 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
212 as ASSOC and MEMEBER.
213 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
214 to more efficient EQ-comparison versions more often.
215 * optimization: enhanced derivation of DOLIST iteration variable type
217 * optimization: constant folding of simple (LIST ...) forms as DOLIST
219 * optimization: runtime lookup of function definitions can be
220 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
221 * optimization: compiler is able to derive the return type of
222 (AREF (THE STRING X) Y) as being CHARACTER.
223 * optimization: CLRHASH on empty hash-tables no longer does pointless
224 work. (thanks to Alec Berryman)
225 * optimization: REPLACE deftransforms don't punt when :START1 or
227 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
228 no longer emits a code deletion note. (reported by Andrew
230 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
231 functions with an odd number of &OPTIONAL arguments, a &REST
232 argument, and one or more &KEY arguments at the call site.
233 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
234 arguments appeared at call sites as well.
235 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
236 READ-LINE &co can no longer read from them afterwards. (reported
238 * bug fix: fixed #427: unused local aliens no longer cause compiler
239 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
241 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
242 alien-stack leakage. (reported by Andy Hefner)
243 * bug fix: PROGV signals an error when an attempt to violate declared
244 type of a variable or bind a constant is made.
245 * bug fix: SET signals an error when an attempt to violate declared
246 type of a variable is made.
247 * bug fix: restart computation during the execution of a restart
248 test function no longer causes infinite recursion. (reported by
250 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
251 signals an error. (thanks to Pierre Mai)
252 * bug fix: EXPORT left symbol unexported in conflict situations.
253 (thanks to Michael Weber)
254 * bug fix: correctly handle name conflicts involving CL:NIL.
255 (thanks to Michael Weber)
256 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
257 conflicts arising from USEing package with conflicting symbols
258 correctly. (thanks to Michael Weber)
260 changes in sbcl-1.0.19 relative to 1.0.18:
261 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
262 warnings that go otherwise unhandled will be muffled if they are
263 of the type that's the value of this variable.
264 * optimization: stack allocation is slightly more efficient on x86
266 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
267 where a raw slot always is initialized using the initform whose
268 type is not know sufficiently well a compile-time are now compiled
269 correctly. (reported by John Morrison)
270 * bug fix: compiler no longer makes erronous assumptions in the
271 presence of non-foldable SATISFIES types.
272 * bug fix: stack analysis missed cleanups of dynamic-extent
273 arguments in non-let-converted calls to local functions.
274 * improvements to the Windows port:
275 ** adjusted address spaces for building on both Win32 and
276 Win64. (thanks for John Connors)
277 * fixed some bugs revealed by Paul Dietz' test suite:
278 ** interval arithmetic during type derivation used inexact integer
279 to single-float coercions.
280 ** arithmetic operations involving large integers and single
281 floats give the same results in compiled and interpreted code.
282 ** deriving the result type of COERCE no longer signals an error
283 if the derived type of the second argument is a MEMBER type
284 containing invalid type specifiers.
285 ** ADJOIN with constant NIL as second argument works correctly.
286 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
288 changes in sbcl-1.0.18 relative to 1.0.17:
289 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
290 profiles only the current thread.
291 * minor incompatible change: changes to SYMBOL-VALUE of constants
292 defined with DEFCONSTANT now signal an error.
293 * enhancement: SB-SPROF now has support for wallclock profiling,
294 and is also able to profile specific threads. REPORT output
295 has also additional sorting options.
296 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
298 * optimization: structure allocation has been improved
299 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
300 ** out of line constructors are ~10% faster.
301 ** inline constructors are ~15% faster.
302 ** inline constructors are capable of dynamic extent allocation
303 (generally on x86 and x86-64, in some cases on other platforms
305 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
307 * optimization: file compiler is now able to coalesce non-circular
308 lists, non-base strings, and bit-vectors. Additionally, constants
309 are never referenced through SYMBOL-VALUE at runtime.
310 * optimization: code defining methods on PRINT-OBJECT (and other
311 generic functions in the COMMON-LISP package) now loads faster.
312 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
314 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
315 fasl is now deleted. (reported by Attila Lendvai)
316 * bug fix: READ-LINE always returned NIL for the last line in files.
317 (reported by Yoshinori Tahara)
318 * bug fix: more accurate disassembly annotations of foreign function
319 calls. (thanks to Andy Hefner)
320 * bug fix: trimming non-simple strings and non-string string
321 designators when the there is nothing to trim works properly.
322 (thanks to James Knight)
323 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
324 (thanks to Travis Cross)
325 * fixed some bugs revealed by Paul Dietz' test suite:
326 ** NIL is a valid function name (regression at 1.0.13.38)
327 ** FILL on lists was missing its return value (regression at 1.0.12.27)
328 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
329 fill pointers properly (regression at 1.0.12.23)
330 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
331 displacement indices properly (regression at 1.0.12.23)
333 changes in sbcl-1.0.17 relative to 1.0.16:
334 * temporary regression: user code can no longer allocate closure
335 variable storage on stack, due to bug 419 without explicitly
336 requesting it. Please consult sbcl-devel for advice if you need to
337 use this feature in the meanwhile.
338 * new feature: runtime argument --control-stack-size can be used to
339 adjust thread default control stack size.
340 * enhancement: improved TIME output
341 ** all times are reported using the measured accuracy (milliseconds
342 for real and GC times, microseconds for everything else.)
343 ** processor cycle counts on x86 and x86-64.
344 ** interpreted forms are counted for both evaluator modes.
345 ** number of lambdas converted by the compiler is reported.
346 ** CPU percentage report (computed from real and total run time.)
347 ** more comprehensive run time reporting, using a condenced format
348 ** interperted form, lambda, and page fault counts are omitted
350 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
352 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
353 * optimization: two argument forms of LAST are upto ~10% faster
354 in normal SPEED policies.
355 * optimization: NCONC no longer needs to heap cons its &REST list
356 in normal SPEED policies.
357 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
359 * bug fix: UNION and NUNION work with :TEST-NOT once more,
360 regression since 1.0.9.1. (thanks to Eric Marsden)
361 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
362 since 1.0.15.36. (thanks to Paul Khuong)
363 * bug fix: LAST when always returned the whole list when given a bignum
364 as the second argument.
365 * bug fix: dynamic extent allocation of nested lists and vectors
366 could leak to otherwise accessible parts.
367 * bug fix: invalid optimization of heap-allocated alien variable
369 * bug fix: fasl header checking is less vulnerable to different
370 platform word lengths.
371 * bug fix: more correct assembler syntax for GNU binutils
372 2.18.50.0.4 support. (thanks to Marijn Schouten)
373 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
375 * bug fix: the fopcompiler can handle LOCALLY forms (with no
376 declarations) successfully. (reported by Attila Lendvai)
378 changes in sbcl-1.0.16 relative to 1.0.15:
379 * minor incompatible change: revert the changes to sb-posix's error
380 signaling added in 1.0.14.
381 * minor incompatible change: change PROBE-FILE back to returning
382 NIL whenever we can't get a truename, as was the case before 1.0.14.
383 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
384 inherits from ERROR instead of just CONDITION.
385 * new feature: SB-INTROSPECT can provide source locations for instances
386 as well. (thanks to Tobias Rittweiler)
387 * optimization: binding special variables now generates smaller code
388 on threaded platforms.
389 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
390 and cases where no :TEST is given but the compiler can infer that
391 the element to search is of type (OR FIXNUM (NOT NUMBER)).
392 * optimization: better LOGNOT on fixnums.
393 * optimization: modular arithmetic for a particular requested width
394 is implemented using a tagged representation unless a better
395 representation is available.
396 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
397 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
398 for wellformedness and returns a specialized vector. (reported by
399 Francois-Rene Rideau)
400 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
401 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
402 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
403 unscheduling timer at the same time as another timer fires.
404 * bug fix: don't reschedule timers for dead threads.
405 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
406 * bug fix: copying output from RUN-PROGRAM to a stream signalled
407 bogus errors if select() was interrupted.
408 * enhancement: add support for fcntl's struct flock to SB-POSIX.
410 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
411 * enhancement: cleaner backtraces for interactive interrupts, as
412 well as other cases where the interesting frames used to be
413 obscured by interrupt handling frames.
414 * enhancement: untracing a whole package using (UNTRACE "FOO") is
415 now supported, and tracing a whole package using (TRACE "FOO") now
416 traces SETF-functions as well.
417 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
418 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
419 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
420 * unreadably printed representation of hash-tables now includes
422 * bug fix: partially fixed #188: type propagation from assignments
423 is now more efficient.
424 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
425 'DOUBLE-FLOAT) are not flushable.
426 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
427 full address of the object, and none of the tag bits.
428 * bug fix: readably printing hash-tables now respects other printer
429 control variables. (reported by Cedric St-Jean)
430 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
431 keyword with MAKE-HASH-TABLE.
432 * bug fix: export SB-POSIX:MKSTEMP.
433 * bug fix: SORT was not interrupt safe.
434 * bug fix: XREF accounts for the last node of each basic-block as
436 * bug fix: MAKE-INSTANCE optimizations interacted badly with
437 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
438 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
439 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
440 create obsolete instances in the case of redefinition or
441 obsoletion of a superclass. (thanks to Andy Hefner)
442 * bug fix: Support for the Alpha architecture has been revived; it had
443 suffered somewhat from lack of maintenance since sbcl-1.0.
444 * improvements to the Windows port:
445 ** The system detects the codepage to use at startup, instead of
446 using the value from the saved core. (thanks to Kei Suzuki)
448 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
449 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
450 (see documentation for details.)
451 * revived support for OpenBSD (contributed by Josh Elsasser)
452 * partially fixed bug #108: ROOM no longer suffers from occasional
453 (AVER (SAP= CURRENT END)) failures.
454 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
455 bodies no longer cause a WARNING to be signalled. (reported by
457 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
458 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
459 the bug in TRUNCATE.) (reported by Michael Weber)
460 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
461 no samples. (reported by Andy Hefner)
462 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
463 no longer appear as (NIL ...) frames in backtraces.
464 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
465 is now actually exported from SB-EXT as documented. (reported by
467 * bug fix: sb-aclrepl now correctly understands how to inspect
468 single-floats on 64-bit platforms where single-floats are not boxed.
469 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
470 yet been finalized. (reported by Levente Meszaros)
471 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
472 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
473 SBCL-specific optimize qualities.
475 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
476 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
477 an executable in the search path, and does so in the child
478 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
479 been removed; it can be found in the CVS history, for somebody who
480 needs that search behavior (see the manual).
481 * minor incompatible change: compiler policy re. weakening type
482 checks has changed: now type checks are weakened only if SAFETY < 2
484 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
485 unparsing of directory pathnames as files. Analogously,
486 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
487 filename to parse into a directory pathname.
488 * enhancement: implicit generic function creation now signals a
489 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
490 users can bind handlers for and muffle around calls to LOAD.
491 * enhancement: RUN-PROGRAM allows unicode arguments and environments
492 to be used (using the default stream external format), and allows
493 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
494 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
495 strings and vectors whose element-type or simplicity is not fully
496 known at compile-time.
497 * optimization: STRING-TRIM and related functions no longer allocate
498 a new string when no trimming needs to be performed. These functions
499 are also faster than before when the input string has been declared
501 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
502 * optimization: READ-LINE is significantly faster for files containing
504 * optimization: non-open coded uses of character comparison operators
505 (e.g. char=) no longer cons when called with more than one parameter
506 on platforms supporting dynamic-extent allocation.
507 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
508 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
509 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
511 * bug fix: some sequence functions elided bounds checking when
513 * bug fix: too liberal weakening of union-type checks when SPEED >
515 * bug fix: more bogus fixnum declarations in ROOM implementation
518 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
519 * new feature: MAKE-HASH-TABLE now experimentally accepts a
520 :SYNCHRONIZED argument, which makes the hash-table safe for
521 concurrent accesses (but not iteration.) See also:
522 SB-EXT:WITH-LOCKED-HASH-TABLE, and
523 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
524 * optimization: CONCATENATE on strings is an order of magnitude faster
525 in code compiled with (> SPEED SPACE).
526 * optimization: SUBSEQ is ~50% faster on lists.
527 * bug fix: bug 417 fixed -- source location reporting is now more robust.
528 * bug fix: SUBSEQ on a list will now correctly signal an error if if
529 END is smaller then START.
530 * bug fix: SB-PROFILE will no longer report extra consing for nested
531 calls to profiled functions.
532 * bug fix: ROOM implementation had bogus fixnum declarations which
533 could cause type-errors when calling ROOM on large images.
534 * bug fix: if file compilation is aborted, the partial fasl is now
535 deleted, and COMPILE-FILE returns NIL as the primary value.
536 * bug fix: number of thread safety issues relating to SBCL's internal
537 hash-table usage have been fixed.
538 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
539 be returned from its body when the values were being returned
540 using unknown-values return convection and the W-P-O was wrapped
541 inside an UNWIND-PROTECT.
542 * bug fix: sb-posix should now compile again under Windows, enabling
545 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
546 * incompatible change: hash-table accessor functions are no longer
547 automatically protected by locks. Concurrent accesses on the same hash-table
548 from multiple threads can give inconsistent results or even corrupt the
549 hash-table completely. Multi-threaded applications should do their own
550 locking at the correct granularity. In the current implementation it is
551 still safe to have multiple readers access the same table, but it's not
552 guaranteed that this property will be maintained in future releases.
553 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
554 and will signal an error at runtime.
555 * enhancement: SB-THREAD package now exports a semaphore interface.
556 * enhancement: CONS can now stack-allocate on x86 and
557 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
559 * enhancement: nested lists can now be stack allocated on
560 platforms providing stack allocation support.
561 * enhancement: dynamic-extent support has been extended to support
562 cases where there are multiple possible sources for the stack
564 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
565 if the mutex is uncontested on Linux.
566 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
567 as specified by the CLHS. (thanks to Tobias Rittweiler)
568 * bug fix: NaN comparison now works on x86-64.
569 * bug fix: CLOSE :ABORT T on a stream with pending output now
571 * bug fix: instances of non-standard metaclasses using standard
572 instance structure protocol sometimes missed the slot type checks
574 * bug fix: known functions can be inlined in high-debug code.
576 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
577 * minor incompatible change: the MSI installer on Windows no longer
578 associates .lisp and .fasl files with the installed SBCL.
579 * minor incompatible change: :UNIX is no longer present in *FEATURES*
580 on Windows. (thanks to Luis Oliviera)
581 * new feature: SB-CLTL2 contrib module now implements
582 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
583 * optimization: scavenging weak pointers is now more efficient,
584 requiring O(1) instead of O(N) per weak pointer to identify
585 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
586 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
587 method bodies using constant slot-names when the first argument is
588 a specializer parameter for the method.
589 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
590 names, when the class of the instance is a direct instance
591 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
592 as slow as the constant slot-name case.)
593 * optimization: member type construction is now O(N) instead
595 * optimization: UNION and NUNION are now O(N+M) for large
596 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
598 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
599 now more readable in environments like Slime which display it.
600 (thanks to Tobias C. Rittweiler)
601 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
602 was able to infer the correct argument type for the object on which
603 the CAS operation was being performed.
604 * bug fix: copy propagation interfered with parallel assignment
605 semantics in local calls. (reported by Paul Khuong)
606 * bug fix: the signed modular fixnum shift compiled to wrong code on
607 x86 and x86-64. (spotted by a slight modification to some of
610 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
611 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
612 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
613 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
615 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
616 and generic function now print the object identity for anonymous
617 instances. (thanks to Attila Lendvai)
618 * enhancement: as an extension to MOP, SBCL now supports SETF of
619 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
620 (thanks to Attila Lendvai)
621 * enhancement: sb-cover has an alternate annotation mode which puts
622 the form annotations at the car of the form, instead of annotating
623 it completely. The benefit of this mode is that it shows better
624 which forms were instrumented by the compiler.
625 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
626 by printer control variables. (reported by Dan Corkill)
627 * bug fix: system leaked memory when delayed output was performed by
628 the OS in smaller chunks then expected. (thanks to David Smith)
629 * bug fix: system leaked memory when file streams were not closed
631 * bug fix: large objects written to slow streams that were modified
632 after the write could end up with the modified state written to
633 the underlying file descriptor.
634 * bug fix: multiple threads operating in parallel on the same stream
635 could cause buffer-overflows.
636 * bug fix: source location information is stored correctly
637 (broken since 1.0.6). This bug would generally show up as the
638 Slime debugger highlighting the wrong form when the sldb-show-source
640 * bug fix: Branch forms are again annotated as branches in the sb-cover
642 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
643 on x86-64. (reported by Gregory Vanuxem)
644 * bug fix: EQUALP could return wrong results for structures with raw
645 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
646 word). (reported by Vjacheslav Fyodorov)
647 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
650 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
651 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
652 atomic compare-and-swap operations on threaded platforms.
653 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
654 allows assigning a global minimum value to optimization qualities
655 (overriding proclamations and declarations).
656 * enhancement: closed over variables can be stack-allocated on x86
658 * performance bug fix: GETHASH and (SETF GETHASH) are once again
660 * optimization: slot definition lookup is now O(1). This speeds up
661 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
662 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
663 * optimization: ASSOC and MEMBER can now be open-coded for all
664 combinations of keyword arguments when second argument is constant
665 and SPEED >= SPACE. In other cases a specialized version is
667 * bug fix: using obsoleted structure instances with TYPEP and
668 generic functions now signals a sensible error.
669 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
670 (reported by Kristoffer Kvello)
671 * bug fix: backtrace construction is now more careful when making
672 lisp-objects from pointers on the stack, to avoid creating bogus
673 objects that can be seen by the GC.
674 * bug fix: defaulting of values in contexts expecting more than 7
675 variables now works on x86-64. (reported by Christopher Laux)
676 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
678 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
679 as the property-list of a symbol.
680 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
681 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
682 situations requested, are once again file-compileable. (reported
685 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
686 * MOP improvement: support for user-defined subclasses of
687 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
688 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
689 the expansion of DEFMETHOD, is responsible for generating a form
690 which creates a list of specializers when evaluated. Additional
691 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
692 debugging and introspective support.
693 * minor incompatible change: the (unsupported) spinlock interface
694 has changed: free spinlock now has the value NIL, and a held spinlock
695 has the owning thread as its value.
696 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
697 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
699 * enhancement: name of a socket-stream is now "a socket" instead of
701 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
702 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
703 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
704 for generic functions. (Thanks to Tobias C. Rittweiler)
705 * optimization: bignum printing speed has been improved by 20-40%
706 (depending on the bignum size.)
707 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
709 * bug fix: the cache used by the CLOS to store precomputed effective
710 methods, slot offsets, and constant return values is now thread and
712 * bug fix: generic function dispatch function updating is now thread
713 and interrupt safe (in the sense that the known issues have been
715 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
716 * bug fix: interning EQL-specializers is now thread and interrupt safe.
717 * bug fix: asdf systems with dependencies to the SB-POSIX or
718 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
719 * bug fix: interrupt safety of applicable method computation has been
722 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
723 * new contrib: sb-cover, an experimental code coverage tool, is included
725 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
726 significantly faster.
727 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
728 produce more efficient code on x86-64 if the compiler can determine
729 that (+ INDEX <constant>) does not require a bounds check and FOO
730 has an element type at least 8 bits wide.
731 * enhancement: a new, experimental synchronous timeout facility is
732 provided. Refer to SB-SYS:WITH-DEADLINE for details.
733 * enhancement: when a symbol name conflict error arises, the
734 conflicting symbols are always printed with a package prefix.
735 (thanks to Kevin Reid)
736 * enhancement: stepping is now once again supported on the SPARC and
737 MIPS platforms. (It is also now more likely to work on CheneyGC
739 * enhancement: sb-sprof can now also track and report accurate call
741 * bug fixes: the treatment of non-standard subclasses of
742 SB-MOP:SPECIALIZER is more correct.
743 * incompatible change: PURIFY no longer copies the data from the
744 dynamic space into the static and read-only spaces on platforms
745 that use the generational garbage collector
746 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
748 * bug fix: GC race condition occasionally resulting in crashes with
749 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
751 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
753 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
754 a STYLE-WARNING to be signalled (regression from 1.0.4.)
755 * bug fix: an asynchronous interrupt could previously leave the
756 system running with GC inhibited.
757 * bug fix: a DECLARE form evaluated at top-level now causes an error
758 rather than silently (or verbosely) returning NIL.
759 * bug fix: trying to dissassemble functions compiled at high DEBUG could
760 result in a error being signalled due to source form lookup errors.
761 (reported by Peter Graves)
763 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
764 * incompatible change: removed writer methods for host-ent-name,
765 host-ent-addresses -- changing the values did not update the DNS
767 * minor incompatible change: changed experimental JOIN-THREAD interface
768 * documentation: the manual now lists reader and writer methods
769 in class slot documentation sections. (thanks to Richard M Kreuter)
770 * documentation: unwinding from asyncronous events has been
771 documented as unsafe.
772 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
773 in multithreaded application code.
774 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
775 platforms. (thanks to James Anderson for the optimization hint)
776 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
778 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
779 variants no longer cons.
780 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
781 their NOT- variants no longer cons.
782 * optimization: EQUAL hash tables no longer use SXHASH for objects
783 of all data types, but instead use an EQL hash for types for which
784 EQUAL is the same as EQL.
785 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
786 are significantly faster.
787 * optimization: new STRING-OUTPUT-STREAM implementation is much
788 faster for large outputs and conses 30% less on average.
789 * enhancement: XREF information is now collected for references made
790 to global variables using SYMBOL-VALUE and a constant argument.
791 * enhancement: SIGINT now causes a specific condition
792 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
793 * bug fix: FILE-POSITION used to signal an error in some cases where
794 ANSI requires it to return NIL.
795 * bug fix: ADJUST-ARRAY is now interrupt-safe.
796 * bug fix: adding and removing fd-handlers is now interrupt-safe.
797 * bug fix: inlined calls to C now ensure 16byte stack alignment on
799 * bug fix: bad type declaration in the CLOS implementation has
800 been fixed. (reported by James Anderson)
801 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
802 (thanks to Lutz Euler)
803 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
804 required by the CLHS. (reported by Samium Gromoff)
805 * bug fix: dead unbound variable references now signal an error.
806 (reported by Marco Monteiro)
807 * bug fix: / with an unused value was being deleted in safe code.
808 (thanks to Marco Monteiro and Kevin Reid)
809 * bug fix: number of characters that can be written onto a single
810 line in a file is unlimited.
811 * bug fix: some GC deadlocks caused by asynchronous interrupts have
812 been fixed by inhibiting interrupts for when GC is disabled.
813 * bug fix: some interrupt safety issues with GETHASH, (SETF
814 GETHASH), CLRHASH and REMHASH have been fixed.
815 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
816 specifier no longer causes infinite recursion.
817 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
818 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
819 * bug fix: an &environment argument with the correct variable information
820 is passed to macros that are expanded during byte compilation.
821 (reported by Samium Gromoff)
822 * bug fix: a logic error was causing the hash function for bignums to
823 have excessive amounts of collisions. (reported by Faré Rideau)
824 * bug fix: modifying the contents of an array could change the return
825 value of SXHASH on that array, which is only allowed for strings
826 and bit vectors. (bug introduced in 0.9.16)
827 * improvement: the x86-64/darwin port now passes all tests (except
828 for the debugger tests) but should still be considered
829 experimental until this is fixed.
830 * improvement: a style-warning is signaled for CASE (etc) clauses with
831 duplicate keys. (thanks to Kevin Reid)
832 * improvement: macos/x86 and macos/x86-64 now use mach exception
833 handlers for dealing with illegal instructions (for trapping and
834 error handling) and memory protection violations (for GC).
836 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
837 * new platform: experimental support for x86-64/darwin (MacOS).
838 * incompatible change: the thread-safe (on most platforms) getaddrinfo
839 and getnameinfo sockets functions are used instead of gethostbyaddr
840 and gethostbyname, on platforms where the newer functions are available.
841 As a result, the ALIASES field of HOST-ENT will always be NIL on these
843 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
844 don't print the startup banner, but behave as if --noinform was passed
845 as a command line argument. (thanks to Kevin Reid)
846 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
847 * optimization: code using alien values with undeclared types is much faster.
848 * optimization: the compiler is now able to open code SEARCH in more cases.
849 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
850 * bug fix: using standardized COMMON-LISP special variables as loop
851 variables no longer signals bogus package lock violations. (reported
853 * bug fix: declaring local loop variables to be of a range-limited type
854 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
855 (reported by Andras Simon)
856 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
857 bugs remain on x86-64.)
858 * bug fix: the #= and ## reader macros now interact reasonably with
859 funcallable instances.
860 * bug fix: type-checks for function arguments were compiled using the
861 compiler policy settings of the wrong lexical environment (in 1.0.2
863 * bug fix: SHADOW accepts characters as string designators, as required
864 by the spec (thanks to Eric Marsden)
865 * bug fix: fixed GC safety issues when foreign functions are called with
866 non-base strings as arguments
867 * bug fix: more consistent error output for fatal-compiler-warnings, like
869 * bug fix: functions with proper names were showing up as NIL in
870 backtraces (reported by Edi Weitz, regression in 1.0.2)
872 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
873 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
874 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
875 produce more efficient code on the x86 if the compiler can determine
876 that (+ INDEX <constant>) does not require a bounds check and FOO
877 has an element type at least 8 bits wide.
878 * bug fix: references to undefined variables are handled the same way
879 in toplevel forms as in the normal compiler
880 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
882 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
883 (thanks to Jon Buller)
884 * improvement: faster compilation times for complex functions
885 * improvement: added readlink support to SB-POSIX (thanks to Richard
888 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
889 * improvement: experimental support for mach exception handling on
890 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
892 * improvement: support for GBK external format.
893 (thanks to Chun Tian (binghe))
894 * improvement: the debugger now displays variables that have been closed
895 over, in code compiled with (DEBUG 2) or higher
896 * improvement: support for executable cores on NetBSD (thanks to
898 * new feature: added a RESTART-FRAME debugger command
899 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
900 be used to provide an implementation for FILE-POSITION on Gray streams
901 (thanks to Eric Marsden)
902 * new feature: add syslog, openlog and closelog support to SB-POSIX
903 (thanks to Richard Kreuter)
904 * optimization: the function call overhead in code compiled with
905 a high DEBUG optimization setting is significantly
906 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
907 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
908 (thanks to Tony Martinez)
909 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
910 evaluated once (reported by Kevin Reid)
911 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
912 works again (thanks to Kilian Sprotte)
913 * bug fix: an error is signaled for tagbodies with duplicate tags
914 (thanks to Stephen Wilson)
915 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
916 * bug fix: Win32 port can now handle foreign code unwinding Lisp
917 stack frames from alien callbacks.
918 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
919 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
920 65k pages (thanks to David Woodhouse)
921 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
923 changes in sbcl-1.0.1 relative to sbcl-1.0:
924 * new platform: FreeBSD/x86-64, including support for threading.
925 * new feature: the compiler stores cross-referencing information
926 about function calls (who-calls), macroexpansion (who-macroexpands)
927 and special variables (who-binds, who-sets, who-references) for code
928 compiled with (< SPACE 3). This information is available through the
929 sb-introspect contrib.
930 * new feature: users may subclass SEQUENCE, and have instances of
931 these classes interoperate with standard Common Lisp functions if
932 a number of methods are defined. (This feature is experimental
933 and the interface subject to change based on feedback from SBCL
934 users and the general community)
935 * improvement: sb-sprof traces call stacks to an arbitrary depth on
936 x86/x86-64, rather than the previous fixed depth of 8
937 * improvement: another pthread back-end of mutex "pthread-futex".
938 * bug fix: non-ascii command-line arguments are processed correctly
939 (thanks to Yaroslav Kavenchuk)
940 * bug fix: non-required arguments were not passed correctly when a method
941 defined using DEFMETHOD was called from a mop-generated method using
942 CALL-NEXT-METHOD (reported by Pascal Costanza)
943 * bug fix: recursion is now permitted in accessors through
944 SLOT-UNBOUND. (reported by Pascal Costanza)
945 * bug fix: an error was signaled at startup if the HOME environment
946 variable was defined, but had an empty value (reported by Peter Van Eynde)
947 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
948 signal a PROGRAM-ERROR, not a BUG.
949 * bug fix: SB-POSIX:READDIR works when built with large file support.
950 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
952 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
953 for better automatic indentation support. (thanks to Matt Pillsbury)
954 * optimization: loading generic functions no longer takes O(n^2) time,
955 proportional to the amount of methods in the generic function
956 (reported by Todd Sabin and Jeremy Brown)
957 * optimization: the FIND and POSITION family of sequence functions
958 are significantly faster on arrays whose element types have been
960 * improvements to the Windows port:
961 ** Intermittent heap corruption problems have been fixed. (thanks
962 to Alastair Bridgewater)
963 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
965 ** Lisp is able to unwind foreign exception frames from alien
966 callbacks. (thanks to Alastair Bridgewater)
968 changes in sbcl-1.0 relative to sbcl-0.9.18:
969 * improvement: experimental support for threading on FreeBSD/x86.
970 (thanks to NIIMI Satoshi)
971 * improvement: runtime option --dynamic-space-size can be used
972 to set the size of the dynamic space reserved on startup.
973 * improvement: floating point modes in effect are now saved in
974 core, and restored on startup.
975 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
976 startup, not time since first call to GET-INTERNAL-REAL-TIME.
977 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
978 threads are not running after *SAVE-HOOKS* have run.
979 * improvement: writes to CLOS instance slots are type-checked in code
980 compiled with (SAFETY 3)
981 * improvement: floating-point exception handling on FreeBSD (thanks to
983 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
984 (thanks to Zach Beane)
985 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
987 * improvement: added support for the Shift-JIS external format.
988 (contributed by NIIMI Satoshi)
989 * improvement: callbacks are supported on Linux/PPC. (thanks to
991 * bug fix: compiler bug triggered by a (non-standard) VALUES
992 declaration in a LET* was fixed. (reported by Kaersten Poeck)
993 * bug fix: file compiler no longer confuses validated and already
994 dumped structurres. (reported by Kaersten Poeck)
995 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
996 fill-pointer signals a type-error as required. (thanks to
998 * bug fix: disassemly of funcallable instances works.
999 * bug fix: single stepping on PPC.
1000 * bug fix: fix thread-safety problems in the type system (generally
1001 manifesting as nonsensical errors like "STRING is a bad type specifier
1002 for sequences" or "The value 1 is not of type FIXNUM")
1003 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1004 (reported by Josip Gracin)
1005 * bug fix: an error is signaled for attempts to displace arrays with
1006 incompatible element types (thanks to Mario Mommer)
1007 * bug fix: more correct handling of wide characters in debug info
1008 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1009 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1010 and don't cause extra consing
1011 * optimization: MAP and MAP-INTO are significantly faster on vectors
1012 whose elements types have been declared.
1013 * Improvements to SB-SPROF:
1014 ** Support for allocation profiling
1015 ** Reduced profiling overhead, especially for long profiling runs
1016 * Improvements to the Windows port:
1017 ** floating point exceptions are now reported correctly.
1018 ** stack exhaustion detection works partially.
1019 ** more accurate GET-INTERNAL-REAL-TIME.
1020 ** better RUN-PROGRAM behaviour in case of errors in the child
1022 ** PROBE-FILE now simplifies pathnames correctly.
1023 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1024 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1025 1st 1970 (although time timezone data will be unreliable).
1026 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1028 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1029 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1030 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1032 * bug fix: two potential GC deadlocks affecting threaded builds.
1033 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1034 returns T (reported by Anton Kazennikov)
1035 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1036 with non-variable places
1037 * bug fix: remove a race condition in the setting of
1038 funcallable-instance functions, this should make threaded CLOS
1039 code more stable against memory faults.
1040 * bug fix: corruption of specials when unbinding is interrupted by an
1041 asynchronous unwind (reported by Hannu Koivisto)
1042 * improvement: the debugger will now also display local variables that
1043 are only used once, for code compiled with a DEBUG optimization quality
1046 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1047 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1048 * incompatible change: External-format support for FFI calls. The
1049 SB-ALIEN:C-STRING no longer implies an ASCII
1050 external-format. Instead the string is subject to external-format
1051 conversion. Additionally return values of type SB-ALIEN:C-STRING
1052 are by default of type (SIMPLE-ARRAY CHARACTER), not
1053 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1054 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1055 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1056 * incompatible change: SB-EXT package no longer contains the
1057 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1058 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1060 * incompatible change: the single-stepper is no longer available
1061 on Alpha, Mips and Sparc platforms.
1062 * minor incompatible change: the direct superclasses of
1063 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1064 not (STANDARD-OBJECT FUNCTION). This makes the
1065 class-precedence-lists of GENERIC-FUNCTION and
1066 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1068 * minor incompatible change: the default stream external format on
1069 non-unicode SBCL is no longer detected from the locale, but is always
1071 * new feature: Add a version of evaluator that uses an interpreter instead
1072 of the compiler. EVAL still uses the compiler by default, to switch it
1073 to use the interpreter, set the value of the variable
1074 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1075 * minor incompatible change: the single-stepper REPL has been merged
1076 with the normal debugger (see the "Stepping" heading of the debugger help
1077 for more details). The debugger command STEP will no longer switch
1078 to the single-stepper REPL.
1079 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1080 for a type now works.
1081 * bug fix: loading of default sysinit file works. (thanks to Leonid
1083 * bug fix: better detection of circularities in the file-compiler.
1084 (reported by Marco Monteiro)
1085 * bug fix: the CL pathname functions now work with files that have
1086 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1087 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1088 systems with Unix98 pty semantics.
1089 * bug fix: ASDF-INSTALL will now work with bsd tar.
1090 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1092 * bug fix: timers expiring in dead threads no longer cause a
1093 type-error (reported by Paul "Nonny Mouse").
1094 * bug fix: thanks to more lightweight single-stepper instrumentation,
1095 code compiled with (DEBUG 3) will compile and execute significantly faster,
1096 and will have more accurate type-inferencing than before
1097 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1098 whose bindings are modified
1099 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1100 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1101 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1102 CL:SOFTWARE-VERSION with proper version
1104 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1105 * feature: implemented the READER-METHOD-CLASS and
1106 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1107 as specified by AMOP.
1108 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1110 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1111 (thanks to Lutz Euler)
1112 * optimization: hashing of general arrays and vectors has been
1113 improved. (reported by Any Fingerhut)
1114 * enhancement: SB-INTROSPECT is now able to find definitions of
1115 profiled functions. (thanks to Troels Henriksen)
1116 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1117 as well, allowing compiler-macros for SETF-functions to expand.
1118 * enhancement: step-instrumentation no longer wraps known
1119 single-value functions with multiple-value context, allowing
1120 better type inference.
1121 * fixed bug #337: use of MAKE-METHOD in method combination now works
1122 even in the presence of user-defined method classes. (reported by
1123 Bruno Haible and Pascal Costanza)
1124 * fixed bug #339(c): if there are applicable methods not part of any
1125 long-form method-combination group, call INVALID-METHOD-ERROR.
1126 (reported by Bruno Haible)
1127 * fixed bug #361: the :FUNCTION initarg in the protocol for
1128 initialization of methods can now be used to override
1129 internally-produced optimized functions. (reported by Bruno
1131 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1132 system-provided lambda expression no longer cause warnings about
1133 unbound #:|pv-table| symbols.
1134 * bug fix: improved the handling of type declarations and the
1135 detection of violations for keyword arguments with non-constant
1137 * bug fix: potentially erronous calls to PATHNAME and
1138 MERGE-PATHNAMES were being flushed in some cases.
1139 (reported by Richard Kreuter)
1140 * bug fix: compiled calls to TYPEP were mishandling obsolete
1141 instances. (reported by James Bielman and Attila Lendvai)
1142 * bug fix: format strings with ~> without matching ~< no longer
1143 trigger an AVER, but signal an understandable error instead.
1144 (reported by Antonio Martinez)
1145 * bug fix: specifying an output-file without a pathname-type for
1146 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1147 of input-file instead of "fasl". (reported by Robert Dodier)
1148 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1149 (reported by James Y Knight).
1150 * bug fix: compiler-macros-function did not consider the environment
1151 argument for shadowing by local functions.
1152 * bug fix: compiler-macros expansion was inhibited by local INLINE
1154 * bug fix: inline expansions of known functions were subject to
1155 step-instrumentation in high debug policies, leading to problems
1156 with type-inference.
1157 * bug fix: compiler failed to differentiate between different CONS
1158 types in some cases.
1159 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1160 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1161 * bug fix: #368: incorrect use of expressed vs. upgraded array
1163 * bug fix: #306a: more precise unions of array types.
1164 * thread-safety improvements:
1165 ** CONDITION-WAIT could return early on Linux, if the thread was
1166 interrupted and subsequently continued with SIGCONT.
1167 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1169 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1170 * added support for the ucs-2 external format. (contributed by Ivan
1172 * minor incompatible change: pretty printing of objects of type
1173 (cons symbol) is, in the default pprint-dispatch-table, now
1174 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1176 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1177 called later in a class's lifetime, possibly as late as when the
1178 first instance of the class is created. Previously,
1179 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1180 class became finalizeable.
1181 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1182 for multibyte external-format streams. (thanks to "vbzoli")
1183 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1184 with :ALLOCATION :CLASS inherited from superclasses of the
1186 * fixed bug: anonymous classes can now be created using the :NAME
1187 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1188 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1189 * fixed bug: core-files saved with :EXECUTABLE T can again be
1190 executed when SBCL_HOME isn't set. (reported by James Knight)
1191 * fixed bug: toplevel LOCALLY forms with declarations could
1192 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1193 * fixed bug: printing from several different threads using different
1194 values of *print-case* could cause invalid output, due to
1195 some internal special variables of the printer not being bound
1196 thread-locally (reported by Max Mikhanosha)
1197 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1198 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1199 (reported by Pascal Costanza)
1200 * fixed bug: FINALIZE-INHERITANCE is called from
1201 REINITIALIZE-INSTANCE on classes when the class has previously
1202 been finalized, as required by AMOP.
1203 * minor code generation optimizations:
1204 ** better register allocation in CLOS dispatching functions
1205 ** overflow detection when coercing signed bytes to fixnums on x86-64
1206 ** is now implemented with one IMUL instruction instead of three shifts
1207 ** more efficient bit-vector access on x86 and x86-64
1208 ** more efficient access to raw structure slots on x86 and x86-64
1209 * fixed some bugs revealed by Paul Dietz' test suite:
1210 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1211 return its argument.
1213 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1214 * feature: thread support on Solaris/x86, and experimental thread support
1216 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1218 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1219 default method for SLOT-UNBOUND.
1220 * minor incompatible change: prevent the user from specializing the
1221 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1222 somewhat counter to the intent of the protocol, I (CSR) think, and
1223 additionally it just doesn't work in SBCL as currently
1224 implemented, thanks to optimizations (that are always valid for
1225 the other three SLOT-VALUEish functions, but not for the setter).
1226 * minor incompatible change: the :SB-LDB feature is now enabled by
1227 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1228 the low-level debugger.
1229 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1230 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1231 down to an SB-SYS:FD-STREAM, allowing direct communication in
1232 more cases. Temporary files and pipes are still used as a fallback
1234 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1235 on the non-reentrant C functions localtime(3) and gmtime(3).
1236 * bug fix: global optimization policy was not visible in LOCALLY and
1238 * bug fix: class objects can be used as specializers in methods.
1239 (reported by Pascal Costanza)
1240 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1241 with a type error. (reported by blitz_ on #lisp)
1242 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1243 failed with a type error. (reported by Pascal Bourguignon)
1244 * bug fix: merging pathnames against defaults with :DIRECTORY
1245 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1246 (reported by James Y Knight)
1247 * bug fix: saving large (>2GB) cores on x86-64 now works
1248 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1249 constant index and a (simple-array (signed-byte 32)) array
1250 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1251 error (patch by Robert J. Macomber)
1252 * feature: TIME now displays the amount of run-time spent in GC
1253 * bug fix: The debugger now does a better job of respecting
1254 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1255 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1256 workaround for bug 403.)
1257 * bug fix: floating point exception handling now works on FreeBSD
1258 (thanks to NIIMI Satoshi)
1259 * fixed some bugs revealed by Paul Dietz' test suite:
1260 ** MISC.641: LET-conversion were not supposed to work in late
1262 * improvements to the Win32/x86 port:
1263 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1264 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1266 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1267 * new feature: source path information is generated for macro-expansion
1268 errors for use in IDE's like Slime (thanks to Helmut Eller)
1269 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1270 * bug fix: compiler does not loop forever on an invalid type in
1272 * improvement: compilation of most CLOS applications is significantly
1274 * optimization: added a limited bytecode compiler for simple toplevel
1275 forms, speeding up compilation and FASL loading
1276 * bug fix: the statistical profiler now properly distinguishes anonymous
1279 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1280 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1281 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1282 into subclasses of the finalized class. Now user calls to
1283 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1284 system return before any subclasses are finalized.
1285 * minor incompatible change: The reader no longer ignores errors
1286 regarding non-existent packages in #+ and #- feature tests.
1287 * new feature: command line options --no-sysinit, --no-userinit to
1288 inhibit loading the corresponding init files
1289 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1290 for sending data through UDP sockets (thanks to François-René Rideau)
1291 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1292 error is signalled instead (thanks to François-René Rideau)
1293 * minor incompatible change: Error signalling behaviour of lexical
1294 operations violating package locks has changed slightly. Refer to
1295 documentation on package locks for details.
1296 * enhancement: EVAL can process IF-expressions without resorting to the
1298 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1299 constant-folded properly due to missing out-of-line functions.
1300 (reported by Mika Pihlajamäki)
1301 * bug fix: LISTEN sometimes returned T even in cases where no data was
1302 immediately available from the stream
1303 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1304 were reversed. (reported by Levente Mészáros)
1305 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1306 when given a vector displaced to an adjustable array. (reported
1308 * bug fix: derivation of float boundaries from numbers outside the
1309 appropriate float range (reported by John Wiseman)
1310 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1312 * bug fix: precomputing cache entries for generic functions with
1313 some subclasses of specializers as yet invalid does not attempt to
1314 fill a cache line with a negative offset. (reported by Levente
1316 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1317 allow condition class objects as arguments to DOCUMENTATION and
1318 (SETF DOCUMENTATION); only find and set documentation for
1319 structure names for the STRUCTURE doc-type. (suggested by Gary
1321 * improvements to the Win32/x86 port:
1322 ** (user-homedir-pathname) and default initialization file
1323 locations now know about the user's "Documents and Settings"
1324 directory (thanks to Yaroslav Kavenchuk)
1325 ** run-program is implemented (thanks to Mike Thomas)
1326 ** sockets support (thanks to Timothy Ritchey)
1327 ** better backtrace support (thanks to Alastair Bridgewater)
1328 ** sb-grovel supported
1329 ** asdf-install and sb-posix work somewhat
1330 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1331 * improvements to the Solaris/x86 port:
1332 ** works on Solaris 11/Solaris Express
1333 ** floating-point exception handling support
1334 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1335 * fixed some bugs revealed by Paul Dietz' test suite:
1336 ** REMOVE-METHOD returns its generic function argument even when
1337 the method is not one of the generic functions' methods.
1338 ** objects declared as MEMBER types can be admissible arguments to
1339 structure accessors.
1340 ** printing characters should simply be printed by the FORMAT ~:C
1342 ** compiler failure when compiling functions with hairy constant
1343 defaults for optional parameters.
1344 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1345 function, which is already optimized.
1347 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1348 * new platform: experimental support for SBCL x86/Darwin, including
1349 MacOS X 10.4.5 on Intel.
1350 * new feature: Unicode character names are now known to the system
1351 (through CHAR-NAME and NAME-CHAR).
1352 * new feature: the filesystem location of SBCL's core file is
1353 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1354 * minor incompatible change: the contrib modules SB-POSIX and
1355 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1356 this change is to make it easier to distribute
1357 location-independent binaries.
1358 * bug fix: as implied by AMOP, standardized classes no longer have
1359 slots named by external symbols of public packages. (reported by
1361 * optimization: calling functions via constant symbols -- as in
1362 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1363 via the function object as in (FUNCALL #'FOO).
1364 * optimization: on x86 and x86-64, the calling convention for the
1365 case of dealing with an unknown number of values has been altered
1366 to be friendlier to the prediction heuristics implemented,
1367 particularly with reference to CALL and RET pairing. (thanks to
1368 Alastair Bridgewater)
1369 * optimization: on x86, the code for access to thread-local symbol
1370 values and binding/unbinding of thread-local symbols is smaller.
1371 (thanks to Alastair Bridgewater)
1372 * enhancement: CONSTANTP is now able to determine constantness of
1373 more complex forms, including calls to constant-foldable standardized
1374 functions and some special forms beyond QUOTE.
1375 * fixed bug: occasional GC crashes on Solaris/x86
1376 * optimization: x86-64 supports stack allocation of results of simple
1377 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1378 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1379 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1380 (thanks to James Knight)
1381 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1382 by the standard (thanks to Stephen Compall)
1384 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1385 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1386 be used for bundling the runtime and the core file into one
1387 executable binary. This feature is not currently supported on all SBCL
1388 platforms. (thanks to James Bielman and NIIMI Satoshi)
1389 * new feature: a generational or ephemeral garbage collector is now
1390 the default on the PowerPC platform (both Linux and Darwin). The
1391 old Cheney (stop and copy) collector is a build-time option.
1392 (thanks to Cyrus Harmon, after Raymond Toy)
1393 * minor incompatible change: the method by which SBCL finds its
1394 contributed modules has changed; it no longer relies on symbolic
1395 links from an $SBCL_HOME/systems directory, but searches directly
1396 in the subdirectories of $SBCL_HOME.
1397 * enhancement: the dynamic heap size on the Linux/PPC platform is
1398 markedly larger, even using the older Cheney garbage collector.
1399 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1400 certain complicated string types. (reported by Gary King)
1401 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1402 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1403 * fixed bug: DOCUMENTATION on structures no longer signals an
1404 error if no structure type of the right name exists. (reported by
1406 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1407 applicable non-standard primary or :AROUND method on
1408 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1409 no longer cause unbound variable errors. (reported by Kevin Reid)
1410 * fixed bug: metacircle resolution in cases where methods have slots
1411 added before the slots from STANDARD-METHOD. (reported by Jean
1413 * fixed bug: the Power PC assembly code for calling into lisp
1414 sometimes computed its return address wrongly (depending on the
1415 15th bit of the address, fixed at link time). This used to
1416 manifest itself in a segmentation violation while building PCL.
1417 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1418 many others over the years)
1419 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1420 the stack pointer (treated as a signed integer) is negative.
1421 (thanks to Peter van Eynde)
1423 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1424 * new platform: experimental support for the Windows operating
1425 system has been added. (thanks to Alastair Bridgewater)
1426 * fixed several bugs in and robustified the PPC FFI (including
1427 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1428 * bug fix: allow non-simple string symbol names (reported by Paul
1430 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1432 * bug fix: saving a core corrupted callbacks on x86/x86-64
1433 * bug fix: closed a loophole in metacircularity detection and
1434 grounding in the PCL implementation of CLOS.
1435 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1436 (reported by tomppa on #lisp)
1437 * bug fix: clear the direction flag on Lisp -> C transitions, as
1438 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1439 (reported by Andrej Grozin and Hendrik Maryns)
1440 * optimization: major improvements to GC efficiency on GENCGC platforms
1441 * optimization: faster implementation of EQUAL
1442 * optimization: emit more efficient opcodes for some common
1443 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1444 * optimization: several other minor code-generation improvements on x86-64
1445 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1447 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1448 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1449 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1450 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1451 by ANSI as a generic function, and for consistency (SETF
1452 GENERIC-FUNCTION-NAME) is treated likewise.
1453 * fixed bug #233.b: make constraint propagation notice when a variable
1454 value is changed after it is referenced but before it is used
1455 * fixed bug #296: no more arbitrary behaviour from filenames with
1456 odd characters as --load arguments. (reported by Adam Warner)
1457 * fixed bug #390: :CHARACTER-SET pathname components now work as
1458 expected. (reported by Tim Daly Jr)
1459 * fixed bug #391: complicated :TYPE intersections in slot
1460 definitions no longer cause an error in PCL internals.
1461 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1462 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1463 returning the number of octets which would be written to the
1464 file-stream. (thanks to Robert J. Macomber)
1465 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1466 arguments to the internal stream functions. (thanks to David
1468 * bug fix: stack exhaustion is now handled on the x86/SunOS
1469 platform. (thanks to Daisuke Homma)
1470 * bug fix: more accurate ROOM results on GENCGC platforms
1471 * optimization: improved type inference for arithmetic-for
1472 index variables in LOOP
1473 * optimization: faster floating-point SQRT on x86-64
1474 * fixed some bugs revealed by Paul Dietz' test suite:
1475 ** DOCUMENTATION returns NIL instead of "" for method combinations
1476 that don't have a docstring
1478 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1479 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1480 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1481 therefore are not customizeable by user code (as seems to be at
1482 least permitted and maybe required by AMOP). As a consolation,
1483 however, the SBCL implementation of these functions now calls
1484 REINITIALIZE-INSTANCE as specified by AMOP.
1485 * bug fix: slot-definition documentation is propagated as per ANSI
1486 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1487 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1488 argument, as do eslotd initialization methods. (from Pascal
1489 Costanza's "Closer" project)
1490 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1491 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1493 * bug fix: it is now possible to have more than one subclass of
1494 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1495 (reported by Bruno Haible, Pascal Costanza and others)
1496 * bug fix: the dependent update protocol now works for generic
1497 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1498 and Pascal Costanza)
1499 * bug fix: condition-class instances corresponding to
1500 DEFINE-CONDITION forms are now created eagerly. (reported by
1501 Kalle Olavi Niemitalo on comp.lang.lisp)
1502 * bug fix: floating point printing is more accurate in some
1503 circumstances. (thanks to Simon Alexander)
1504 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1505 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1506 * bug fix: callbacks on OS X now preserve stack-alignment.
1507 (thanks to Cyrus Harmon)
1508 * enhancement: the x86-64 disassembler is much better at
1509 disassembling SSE instructions. (thanks to Lutz Euler)
1510 * enhancement: CHECK-TYPE on a variable now allows type-inference
1511 (thanks to Vincent Arkesteijn)
1512 * optimization: improved performance of EUC-JP external format.
1513 (thanks to NIIMI Satoshi)
1514 * optimization: performance improvements to IO on file streams of
1515 :ELEMENT-TYPE CHARACTER
1516 * optimization: much faster memory allocation on x86-64
1517 * optimization: faster garbage collections (latency and throughput)
1519 * optimization: faster bignum subtraction and division on x86 and x86-64
1520 (thanks to Lutz Euler)
1521 * optimization: more accurate type-inference for loops that use a
1522 floating point index variable or a negative step.
1524 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1525 * bug fix: add a workaround to SBCL looping infinitely at startup on
1526 Linux kernels with apparently buggy implementations of personality().
1527 (thanks to Svein Ove Aas)
1528 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1529 (thanks to David Lichteblau)
1530 * bug fix: local bindings shadow global symbol macros for
1531 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1532 * optimization: non-open coded uses of numeric comparison operators
1533 (e.g. >) no longer cons when called with more than one parameter
1534 on platforms supporting dynamic-extent allocation.
1535 * enhancement: saving cores with foreign code loaded is now supported
1536 on MIPS/Linux in addition to the previously supported platforms.
1537 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1538 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1539 * bug fix: division by zero in sb-sprof when no samples were collected
1540 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1541 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1542 (thanks to Alexander Kjeldaas)
1543 * new feature: ignoring the return values of destructive functions
1544 like NREVERSE signals a compile-time style-warning.
1545 (thanks to Kevin Reid)
1546 * new feature: the alignment of alien structure fields can be
1547 explicitly specified. (thanks to Cyrus Harmon)
1548 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1549 and dump core on SIGQUIT
1551 ** incompatible change: threads do not inherit values of specials
1552 from their parents (see manual)
1553 ** bug fix: threads stacks belonging to dead threads are freed by the
1554 next exiting thread, no need to gc to collect thread stacks anymore
1555 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1556 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1557 ** bug fix: dynamic variable and thread start related gc lossage
1558 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1560 * fixed some bugs revealed by Paul Dietz' test suite:
1561 ** SUBTYPEP is slightly more accurate on heinously complicated
1562 CONS types where some of the members have uncertain (in the
1563 NIL, NIL sense) type relationships to each other.
1565 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1566 no longer purified unless :PURIFY T is explicitly specified.
1567 ** Non-purified cores are significantly smaller than before
1569 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1570 * new feature: timers based on Zach Beane's excellent timer package
1571 * added support for the following external formats: koi8-u,
1572 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1573 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1574 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1575 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1576 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1577 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1578 * incompatible change: a threaded SBCL will no longer revert to
1579 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1580 * bug fix: interrupts are disabled until startup is complete; no
1581 more sigsegvs when receiving a signal to soon
1582 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1584 * bug fix: add a workaround for the memory randomization features in
1585 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1586 workaround will only be in effect on systems with the proc filesystem
1588 * bug fix: printing objects of type HASH-TABLE signals a
1589 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1591 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1592 have been running for over 50 days. (reported by Gilbert Baumann)
1593 * bug fix: the logic for getting names of functions gets less
1594 confused when confronded with alternate-metaclass
1595 funcallable-instances. (reported by Cyrus Harmon)
1596 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1597 consistent, even on internal alternate-metaclass objects.
1598 * bug fix: flush closure information collected by physical
1599 environment analysis prepass before the main pass. (bug reported
1601 * bug fix: compiler pack phase does not modify a hashtable, which is
1602 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1603 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1604 may be expanded. (reported by Alexander <malishev> on c.l.l)
1605 * bug fix: no more style-warnings when compiling code using LAST
1606 under high-SPEED low-SPACE settings. (reported by David Wallin
1608 * fixed some incompatibilities between SBCL's MOP and the MOP
1610 ** the METAOBJECT class is now implemented;
1611 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1612 STANDARD-OBJECT, as required;
1613 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1614 now compatible (as required by VALIDATE-SUPERCLASS); there
1615 remains a consistency requirement over the presence or absence
1616 of the FUNCTION class in the superclass list of finalized
1617 classes; see the manual for more details;
1618 ** the :AROUND method for COMPUTE-SLOTS on
1619 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1620 requested slot ordering.
1622 ** bug fix: parent thread now can be gc'ed even with a live
1624 ** bug fix: binding a special with PROGV to no value is not
1625 the same as that symbol not having been bound (thanks to
1627 ** bug fix: binding specials is thread safe (thanks to
1629 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1630 and SB-SPROF do not die with 'no handler for signal XX in
1631 interrupt_handle_now(..)' anymore
1632 ** bug fix: WITH-TIMEOUT works with multiple running threads
1633 * fixed some bugs revealed by Paul Dietz' test suite:
1634 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1635 the :method-class keyword argument.
1637 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1638 * new port: the Solaris operating system on x86 processors is now
1639 mostly supported, though some rough edges in the environment
1640 remain. (thanks to Daisuke Homma)
1641 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1642 space for its heap. (thanks to Thiemo Seufer)
1643 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1644 closures. (thanks to Thiemo Seufer)
1645 * minor incompatible change: eof selects abort in the debugger.
1646 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1647 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1649 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1650 deprecated, and will go away in a future revision of SBCL.
1651 * minor incompatible change: GC-ON and GC-OFF are no longer
1652 implemented with a counter, it does not matter how many times gc
1653 is switched on or off
1654 * bug fix: discriminating functions for generic function classes
1655 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1656 make invalid assumptions about method precedence order. (reported
1658 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1659 platforms. (thanks to Thiemo Seufer)
1660 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1661 * bug fix: correct pathname printing with printer escaping is on.
1662 (thanks to Kevin Reid)
1663 * bug fix: complex VOP definitions in "user-space" no longer trigger
1664 package locks. (reported by Zach Beane)
1665 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1666 for funcallable-instance functions, and is no different from
1668 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1669 characters in the current readtable. (reported by Nicholas Neuss)
1670 * bug fix: SUBTYPEP on various CONS types returns more a more
1671 accurate acknowledgment of its certainty.
1672 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1673 lists in some cases. This partially fixes bug 384.
1674 * flush all standard streams before prompting in the REPL and the
1676 * bug fix: signal handling and triggering gc do not conflict
1677 directly anymore, in particular a high frequency sb-sprof does
1678 not prevent gc from running
1679 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1680 approximation for timezone and DST information between the
1681 universal time epoch and the smallest negative 32-bit time_t.
1682 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1683 year 1899 so long as the encoded time is non-negative.
1684 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1685 the correct answer for non-constant rotate amounts when performing
1686 an inline 32-bit rotation.
1688 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1689 there is only one thread in the session
1690 ** bug fix: memory leak for streams created in one thread and
1691 written to in another
1692 ** bug fix: lockup when compiled with gcc4
1693 ** bug fix: race that allows the gc to be triggered when gc is
1695 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1696 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1698 ** bug fix: finished threads are gc'ed properly
1699 * fixed some bugs revealed by Paul Dietz' test suite:
1700 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1701 has arguments with a different set of applicable methods from
1702 the orignal arguments.
1703 ** The type error thrown by MAP now has a correct expected-type
1705 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1706 name a compiled function.
1707 ** Three MISC tests where a large bignum was improperly coerced to
1708 a float that couldn't represent that bignum during type
1709 derivation were fixed.
1710 ** SUBTYPEP can now handle types involving the negation of a
1711 list-form FUNCTION type.
1712 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1713 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1714 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1716 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1717 * New feature: Experimental support for bivalent streams: streams
1718 opened with :element-type :default now allow character and binary
1719 (unsigned-byte 8) I/O
1720 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1721 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1723 * bug fix: no more highly sporadic "couldn't check whether ~S is
1724 readable" when reading a stream and an interrupt hits in the middle
1725 of a select system call
1726 * compiler better recognizes complex arrays (reported by Eduardo
1728 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1729 for variables on SBCL built with linkage-tables. (reported by Luis
1731 * various error reporting improvements.
1732 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1733 (Thanks to Thiemo Seufer)
1734 * bug fix: nested reader invokations work correctly
1735 * bug fix: it is possible to have simultaneous references to foreign
1736 code and foreign data with the same name.
1738 ** added x86-64 support
1739 ** incompatible change: the threading api now works with thread
1740 objects instead of thread ids
1741 ** bug fix: threads are protected from signals and interruption when
1742 starting up or going down
1743 ** bug fix: a race where an exiting thread could lose its stack to gc
1744 ** bug fix: don't halt on infinite error in threads if possible
1745 ** fixed numerous gc deadlocks introduced in the pthread merge
1746 ** bug fix: fixed thread safety issues in read and print
1747 ** bug fix: debugger doesn't hang on session lock if interrupted at
1748 an inappropriate moment
1749 ** bug fix: run-program is now thread safe(r)
1750 ** bug fix: inner with-recursive-lock no longer releases the mutex
1751 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1752 * fixed some bugs revealed by Paul Dietz' test suite:
1753 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1754 EXPECTED-TYPE slots filled.
1755 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1757 ** MAKE-CONDITION accepts classes as type-designators.
1758 ** COMPILE may never return NIL.
1759 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1760 range before calling Unix time functions
1762 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1763 * numerous signal handling fixes to increase stability
1764 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1765 * minor incompatible change: we now correctly canonize default
1766 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1767 as per the MOP, rather than the historical (INITARG INITFUNCTION
1768 INITFORM). (reported by Bruno Haible)
1769 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1770 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1771 for more information.
1772 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1773 pathname is a directory pathname.
1774 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1775 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1777 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1778 :METACLASS argument in addition to a class name. (reported by
1779 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1780 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1781 (reported by Bruno Haible; patch from Gerd Moellmann)
1782 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1784 * bug fix: more cleanups to the floating point exception handling on
1785 x86-64 (thanks to James Knight)
1786 * bug fix: the compiler does not try to constant fold calls of
1787 COERCE and BIT-* functions when they return freshly constructed
1788 objects. (reported by Nikodemus Siivola and Paul Dietz)
1789 * optimization: improved the MIPS versions of generic (in the
1790 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1791 * optimization: direct conversion of (unsigned-byte 32) to floats on
1792 the PowerPC platform.
1793 * optimization: structure instances with raw slots now use less
1794 memory, and probably show better memory locality. (thanks to
1796 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1797 are treated as requests for stack allocation on the x86-64,
1798 Alpha-32, PPC and SPARC platforms.
1799 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1800 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1801 (thanks to Tony Martinez)
1803 ** gcing a dead thread can no longer lead to lockups
1804 ** threads block signals until they are set up properly
1805 ** errno is no longer shared by threads
1806 ** interrupt-thread restores the eflags register on x86
1807 ** fixed some lockups due to gc/thread interaction
1808 * fixed some bugs revealed by Paul Dietz' test suite:
1809 ** invalid dotted lists no longer raise a read error when
1810 *READ-SUPPRESS* is T
1811 ** signal an error if a symbol that names a declaration is used
1812 as the name of a type, or vice versa
1813 ** allow using the (declare (typespec var*)) abbreviation for
1814 (declare (type typespec var*)) with all type specifiers
1815 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1816 ** always return NIL from PPRINT-POP when OBJECT is NIL
1817 ** don't signal errors when pretty-printing malformed LABELS,
1818 FLET or MACROLET forms
1819 ** declarations in a DOLIST body are also in scope for the
1821 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1823 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1826 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1827 * fixed cross-compiler leakages that prevented building a 32-bit
1828 target with a 64-bit host compiler.
1829 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1830 opened with :IF-EXISTS :OVERWRITE.
1831 * fixed bug 281: error for an invalid qualifier in a short-form method
1832 combination method is not signalled until the faulty method is called.
1833 * bug fix: iteration variable type inferrer failed to deal with open
1834 intervals. (reported by Alan Shields)
1835 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1836 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1837 or more runtime options were provided to the sbcl binary.
1838 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1839 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1840 * optimization: there's now a fast-path for fixnum arguments in the
1841 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1842 * optimization: the code generated on x86-64 is more compact thanks
1843 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1844 * bug fix: floating-point exception handling now partly works on
1845 x86-64. (Thanks to James Knight)
1846 * improvement to the MIPS backend from Thiemo Seufer: C-style
1847 64-bit long long arguments and return values to alien functions
1849 * fixed some bugs revealed by Paul Dietz' test suite:
1850 ** the type-error signalled from WARN has a filled-in DATUM slot.
1851 ** the type-error required when a stream is not associated with
1852 a file has the stream as its datum.
1853 ** type-errors on single-floats on x86-64 no longer have
1854 :INVALID-OBJECT as the datum
1855 ** the type-errors signalled for invalid function names now have
1856 a correct expected type
1857 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1858 for structures defined with a :TYPE. Documentation strings for
1859 typed structures are no longer immediately discarded
1860 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1861 broadcast streams and synonym streams. FILE-LENGTH now also works
1862 on broadcast streams.
1864 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1865 * incompatible change: the --noprogrammer option, deprecated since
1866 version 0.7.5, has been removed. Please use the equivalent
1867 --disable-debugger option instead.
1868 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1870 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1871 inoperational for a while now) has been completely removed.
1872 * null lexical environments are now printed as #<NULL-LEXENV>,
1873 significantly reducing the amount of clutter in typical backtraces.
1874 * documentation on weak pointers, finalization, and after GC hooks
1875 has been added to the manual.
1876 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1877 as other specialized array types, is much faster. SUBSEQ and
1878 COPY-SEQ on such arrays have also been sped up.
1879 * optimization: EQL is now more efficient when at least other argument
1880 is known to be of type (OR FIXNUM (NOT NUMBER)).
1881 * fixed bug: the runtime is now less vulnerable to changes in the
1882 size of the SBCL object on OS X, and virtual memory is reserved for
1883 all spaces that need to be at a fixed address.
1884 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1885 * fixed bug: finalizers and after GC hooks that cause consing are now
1887 * fixed bug: compiler error messages and summaries are now printed to
1888 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1889 * fixed inference of the upper bound of an iteration variable.
1890 (reported by Rajat Datta).
1891 * fixed bug 211e: calling local functions with duplicated constant
1892 keyword argument no longer causes a bogus style warning about an
1894 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1895 ftype declaration to be disregarded. (reported by Dave Roberts)
1896 * fixed bug 373: caused by erronous compilation of references to alien
1897 variables in the runtime on ppc/darwin.
1898 * fixed bug 376: CONJUGATE type deriver.
1899 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1900 (reported by Baughn on #lisp)
1901 * a cross-compiler bug on non-x86 platforms has been identified and
1902 fixed. (thanks to Bruno Haible)
1903 * improvements to the MIPS runtime code for increased stability.
1904 (thanks to Thiemo Seufer)
1905 * increased the maximimum compact environment size to allow
1906 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1907 * partial workaround for bug 135: don't name the function we're
1908 calling for hairy cases of EVAL, so as not to accumulate one environment
1909 entry per call to EVAL. (reported by Kevin Reid)
1910 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1911 * optimization: type testing for non-vector arrays should be faster.
1912 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1914 * bug fix: setting 31st element of a bit vector to zero did not work
1916 * bug fix: redefining a class definition which failed due to a
1917 previous accessor / function clash now works (but see BUGS entry
1918 #380 for more problems in this area). (thanks to Zach Beane)
1919 * the long form of DEFINE-METHOD-COMBINATION disables method group
1920 checking when given a single method group with pattern *. (thanks
1922 * on x86 compiler supports stack allocation of results of simple
1923 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1924 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1925 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1926 * fixed some bugs related to Unicode integration:
1927 ** the restarts for recovering from input and output encoding
1928 errors only appear when there is in fact such an error to
1930 * fixed some bugs revealed by Paul Dietz' test suite:
1931 ** MISC.549 and similar: late transformation of unsafe type
1932 assertions into derived types caused unexpected code
1934 ** SCALE-FLOAT type deriver is less wrong.
1935 ** type derivers for EXP, LOG and similar functions compute result
1936 types for complex arguments better.
1937 ** (MISC.563) CONJUGATE type deriver works for very restricted
1939 ** out-of-line type testers for character strings are available.
1940 ** EQUAL compiler transform understands specialness of objects
1942 ** accessing double-floats stored on the stack now works on x86-64.
1943 ** debugger internals could sometimes create invalid lispobjs,
1944 resulting in GC crashes.
1945 ** MISC.548: type check weakening can convert required type into
1947 ** initialization forms for bindings are not in scope of free special
1950 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1951 * incompatible change: thread support for non-NPTL systems has
1952 been removed - locking is buggy and unreliable. A threaded
1953 SBCL build will now warn at startup and refuse to create
1954 new threads, unless futex support is detected in the kernel
1955 * incompatible change: the top level REPL now has only an ABORT
1956 restart associated with it, not TOPLEVEL and ABORT as it used to.
1957 TOP and TOPLEVEL are now available as debugger commands for
1958 returning to the top level.
1959 * incompatible change: forms evaluated in the REPL now use the
1960 global optimization policy.
1961 * incompatible change: user- and system-initialization files are
1962 no longer processed with LOAD, but by READ and EVAL; hence the
1963 global optimization policy, startup package, readtable, etc,
1965 * The .fasl file format number has been incremented because of
1966 various incompatible changes.
1967 * internal entry point details and argument counts no longer appear
1968 in backtraces unless explicitly requested by setting
1969 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1970 * built-in and standard functions no longer have names like "top
1971 level local call to FOO".
1972 * fixed bug 32: functions defined in non-null lexical environments
1973 now have more legible printed representation
1974 * fixed bug 33: functions defined in non-null lexical environemnts
1975 are now more amenable to inspection by INSPECT.
1976 * workaround for bug 354: XEPs no longer appear in backtraces unless
1977 explicitly requested.
1978 * fixed bug: receiving the signal which results from attempting to
1979 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1980 SIGBUS on other *BSDs) on architectures where the C stack is also
1981 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1982 to debugger confusion or wild instability. (reported by Cheuksan
1984 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1985 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1986 (reported by Lutz Euler)
1987 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1988 compiled code. (reported by Paul Dietz)
1989 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1990 specialized parameter to a method to something that is not TYPEP
1991 the specializer is now possible.
1992 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1993 face of package deletion.
1994 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1995 pathname. (reported by David Tolpin on c.l.l)
1996 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1997 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1998 STRING-STREAM and FILE-STREAM, respectively.
1999 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2000 than previously; in addition, its test suite is now run on build.
2001 (thanks to Luke Gorrie)
2002 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2003 * optimization: added a immediate representation for single-floats
2005 * fixed some bugs revealed by Paul Dietz' test suite:
2006 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2007 ** attempting to create a package with a colliding nickname causes
2008 correctable errors to be signalled.
2009 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2010 ** several x86-64 backend bugs related to sign-extension of immediate
2013 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2014 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2015 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2017 * fixed loading of multiply forward-referenced layouts.
2018 (thanks to Cheuksan Wang)
2019 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2020 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2021 (see COMPILE-FILE documentation for details of :PRINT option)
2022 * fixed bugs 19 and 317: fixed-format floating point printing is
2023 more accurate. This also fixes a bug reported by Adam Warner
2024 related to the ~@F format directive.
2025 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2027 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2028 dispatch table if the from-char is a dispatch macro character.
2029 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2030 by the wordsize no longer ignore the last word. (reported by Lutz
2032 * fixed bug in type checking of dynamic-extent variables. (reported
2034 * optimization: sequence traversal functions use their freedom to
2035 coerce function designators to functions.
2036 * optimization: code with many calls to CLOS methods specialized on
2037 CLOS classes has had redundant type checks removed.
2038 * optimization: added declarations to speed up operations that access
2039 the internal character database (for example STRING-UPCASE)
2040 * optimization: comparison operations between floats and sufficiently small
2041 fixnums no longer create extra rationals
2042 * fixed some bugs related to Unicode integration:
2043 ** portions of multibyte characters at the end of buffers for
2044 character-based file input are correctly transferred to the
2045 start of the buffer at the next read.
2046 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2047 passing it through to OPEN.
2048 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2049 argument given to internal calls to OPEN.
2050 ** the built-in comment readers (introduced by character sequences
2051 ";" and "#|") are more forgiving to encoding errors; they will
2052 STYLE-WARN and then attempt to resync the stream at a character
2053 boundary. (thanks to Teemu Kalvas)
2054 * fixed some bugs in the x86-64 port:
2055 ** Negative short int return values from c-calls are sign-extended
2057 ** The stack is aligned to 16-bytes for c-calls, as required by
2058 the ABI. (thanks to Cheuksan Wang)
2059 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2060 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2061 for enums. (thanks to Vincent Arkesteijn)
2062 ** Multiple small optimizations and bugfixes for floating point
2064 * fixed some bugs revealed by Paul Dietz' test suite:
2065 ** Space, Tab, Linefeed, Return and Page have the invalid
2066 secondary constituent character trait.
2067 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2069 ** WITH-INPUT-FROM-STRING should only update the index place on
2071 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2072 works more reliably.
2073 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2074 with one-dimensional arrays with fill pointers.
2075 ** TYPE-OF failed on a complex with an integer realpart and a
2077 ** compiler failure during type inference for the code of form
2078 (IF (EQL X (THE ...)) ...) (MISC.535).
2080 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2081 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2082 platform. The port supports 61-bit fixnums, large memory spaces
2083 and reloading shared object files.
2084 * enhancement: saving cores with foreign code loaded is now
2085 supported on ppc/Darwin in addition to the previously supported
2087 * enhancement: the statistical profiler now walks deeper into the
2088 call stack for more meaningful call-graphs and accrued time
2089 reports (x86/x86-64 only). It also now reports time spent in
2091 * enhancement: it is now possible to trace most individual methods
2092 of a generic function in addition to tracing the generic function
2094 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2096 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2097 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2098 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2099 produces an error. (thanks to Vincent Arkesteijn)
2100 * bug fix: NAMESTRING on pathnames with :WILD components in their
2101 directories works correctly. (thanks to Artem V. Andreev)
2102 * fixed bug 125: compiler preserves identity of closures. (reported
2104 * bug fixed: functions with &REST arguments sometimes failed with
2105 "Undefined function" when compiled with (DEBUG 3). (reported by
2107 * bug fix: overflow during compiling of setting element of a bit
2108 vector with constant index and value. (reported by Timmy Douglas)
2109 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2110 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2111 * on x86 compiler partially supports stack allocation of dynamic-extent
2113 * GO and RETURN-FROM do not check the extent of their exit points
2114 when compiled with SAFETY 0.
2115 * fixed some bugs related to Unicode integration:
2116 ** encoding and decoding errors are now much more robustly
2117 handled; it should now be possible to recover even from invalid
2118 input or output to the terminal. (thanks to Teemu Kalvas)
2119 ** provided a first cut at implementing STRING-TO-OCTETS and
2120 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2121 ** altered the SB-MD5 contributed module slightly, changing the
2122 interface just enough for it to be supportable for builds where
2123 lisp characters are not eight bits.
2124 * fixed some bugs revealed by Paul Dietz' test suite:
2125 ** the FORMATTER-generated functions for ~V[ conditionals require
2126 the correct number of arguments.
2127 ** READ-FROM-STRING returns the mandated second value when applied
2128 to displaced strings.
2129 ** the #\Rubout and #\Backspace characters are treated as invalid
2130 constituent characters by the tokenizer.
2132 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2133 * new feature: reloading changed shared object files with
2134 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2135 * new feature: references to foreign variables and functions
2136 can now be compiled and loaded before the corresponding shared
2137 object file is loaded, as long as the foreign definitions are
2138 available at runtime.
2139 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2140 supported. (thanks to Dan Debertin)
2141 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2142 just keywords. (thanks to Vincent Arkesteijn)
2143 * fixed bug #331: structure-class instances corresponding to
2144 DEFSTRUCT forms are now created eagerly.
2145 * fixed bug #345: backtraces from calls to undefined functions work
2146 on x86 as well. Related bug #61 is now also partially fixed on x86
2147 (backtraces from throws to unknown catch tags.)
2148 * bug fix: lambda-list parsing is now stricter vrt. order and number
2149 of lambda-list keywords.
2150 * bug fix: as specified by AMOP, an error is signalled if a
2151 class-option appears multiple times in a DEFCLASS form. (reported
2153 * bug fix: RANDOM can be compiled when the compiler derives the type
2154 of its numeric argument as a disjoint set of small integers.
2155 (reported by Paul Dietz)
2156 * bug fix: starting a core saved with shared objects loaded when
2157 those objects are not available no longer causes threaded SBCL to
2158 hang. (reported by Sean Ross)
2159 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2161 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2162 argument, which must always be NIL. (reported by Kalle Niemitalo)
2163 * bug fix: printing 1.0d+23 no longer results in an error.
2164 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2165 * bug fix: structure slot setters preserve evaluation order. (thanks
2167 * fixed some bugs related to Unicode integration:
2168 ** RUN-PROGRAM can allow its child to take input from a Lisp
2169 stream. (reported by Stefan Scholl)
2170 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2171 locales. (reported by Ken Causey)
2172 * fixed some bugs revealed by Paul Dietz' test suite:
2173 ** INCF, DECF and REMF evaluate their place form as specified in
2175 ** FORMATTER expands ~{ ~} iteration directives with V or #
2176 parameters correctly.
2177 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2178 consequent uses no arguments correctly.
2179 ** the system has a partial understanding of the (COMPLEX RATIO)
2181 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2184 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2185 * new feature: a build-time option (controlled by the :SB-UNICODE
2186 keyword feature, enabled by default) for building the system with
2187 support for the entire 21-bit character space defined by the
2189 * new feature: the system now has rudimentary external-format
2190 support; the primary user-visible change at this time is that
2191 characters with the high bit set (such as lower-case-e-acute) will
2192 print correctly to a terminal in a UTF-8 environment.
2193 * minor incompatible change: BASE-CHAR no longer names a class;
2194 however, CHARACTER continues to do so, as required by ANSI.
2195 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2196 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2197 has been moved to the SB-EXT package (temporarily re-exported from
2199 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2200 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2202 * fixed bug #351: better error-handlind and reporting for malformed
2204 * fixed bug #350: bignum-printing is now more memory-efficient,
2205 allowing printing of very large bignums, eg. (expt 2 10000000).
2206 (reported by Bruno Haible)
2207 * fixed bug #302: better primitive-type selection for intersection
2209 * fixed bug #308: non-graphic characters now all have names, as
2210 required. (reported by Bruno Haible)
2211 * bug fix: redefining a class with different superclasses now correctly
2212 removes it from the direct-subclasses of its previous superclasses.
2213 (reported by David Morse)
2214 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2215 new value now works. (reported by Bruno Haible)
2216 * bug fix: correct canonicalization of multiple non-standard slot
2217 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2218 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2219 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2220 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2221 now exists, an signals an error.
2222 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2223 during macroexpansion for non-iteration variables as well. (reported
2224 by Bruno Haible for CMUCL)
2225 * bug fix: Cyclic structures and unprintable objects in compiler
2226 messages no longer cause errors. (reported by Bruno Haible)
2227 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2228 and READ-FROM-STRING all now return a primary value of NIL if
2229 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2230 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2231 (reported by Bruno Haible for CMUCL)
2232 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2233 do not designate a condition. (reported by Bruno Haible for
2235 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2236 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2237 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2238 permitting resolution in favour of any of the conflicting symbols.
2239 (reported by Bruno Haible for CMUCL)
2240 * bug fix: EQUAL compiler optimizations is less aggressive on
2241 strings which can potentially compare true despite having distinct
2242 specialized array element types.
2243 * bug fix: unit enumerations can be defined without dividing by
2244 zero. (thanks to Vincent Arkesteijn)
2245 * FORMAT compile-time argument count checking has been enhanced.
2246 (report from Bruno Haible for CMUCL)
2247 * a partial workaround for the bug 262: the compiler does not try to
2248 inline-expand a local function doing RETURN-FROM from a deleted
2249 BLOCK. (thanks to Peter Denno for the bug report and to David
2250 Wragg for the simple test case)
2251 * fixed some bugs revealed by Paul Dietz' test suite:
2252 ** RENAME-PACKAGE allows all package designators as new package
2254 ** constraint propagation and lambda variable substitution are
2255 more cautious in dealing with partially deleted code.
2256 ** compiler sometimes lost reoptimization passes.
2257 ** CERROR, given a condition as condition designator, passes its
2258 remaining arguments to the continue format control without
2260 ** Case-altering FORMAT directives work correctly on non-ASCII
2262 ** The REAL type specifier handles bounds outside the floating
2263 point ranges without signalling FLOATING-POINT-OVERFLOW.
2264 ** Functions with IR1-transformations can create intercomponent
2265 references to global functions.
2266 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2268 ** FORMAT ~R treats a nil value for its first parameter correctly.
2270 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2271 * enhancement: saving cores with foreign code loaded is now
2272 supported on x86/NetBSD and sparc/Linux in addition to the previously
2273 supported platforms.
2274 * bug fix: on some platforms repeated installations caused multiple
2275 copies of HTML documentation to be installed -- should not happen
2276 any more. (reported by Stefan Scholl)
2277 * bug fix: parsing self-recursive alien record types multiple times
2278 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2279 original patch by Helmut Eller for CMUCL)
2280 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2281 (thanks to Richard Kreuter)
2282 * bug fix: defining classes whose accessors are methods on existing
2283 generic functions in other (locked) packages no longer signals
2284 bogus package lock violations. (reported by François-René Rideau)
2285 * bug fix: special variables as DEFMETHOD parameters no longer have
2286 associated bogus type declarations. (reported by David Wragg and
2288 * bug fix: read-write consistency on streams of element-type
2289 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2290 * bug fix: redefiniton of the only method of a generic function with
2291 no DEFGENERIC no longer emits a full WARNING. In addition,
2292 redefinition of generic functions with no DEFGENERIC to an
2293 incompatible lambda list now signals an error. (thanks to Zach
2295 * bug fix: DEFGENERIC now works even when there's a function of the
2296 same name in an enclosing lexical environment. (thanks to Zach
2298 * fixed compiler failure, caused by instrumenting code during
2299 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2300 * optimization: added loop analysis and improved register allocation
2301 * fixed some bugs revealed by Paul Dietz' test suite:
2302 ** POSITION on displaced vectors with non-zero displacement
2303 returns the right answer.
2304 ** (SIMPLE-STRING) is a valid type specifier for sequence
2306 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2308 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2309 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2311 ** The justification version of the FORMAT ~< directive treats
2312 non-zero minpad parameter correctly.
2314 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2315 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2316 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2317 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2318 the supported interface.
2319 * new feature: Single-stepping of code compiled with DEBUG 2 or
2320 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2321 * new feature: saving cores with foreign code loaded is now
2322 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2323 Timothy Moore's work for CMUCL)
2324 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2325 parameters to * instead of NIL if no initform is supplied.
2326 (reported by Johan Bockgaard)
2327 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2328 correctly when FUNCALL appears as the car of the form. Note:
2329 despite this FUNCALL forms are not currently subject to
2330 compiler-macro expansion. (port of Raymond Toy's fix for the
2331 same from CMUCL, reported by Johan Bockgaard)
2332 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2333 (thanks for Teemu Kalvas)
2334 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2335 case instead of terminating the iteration (thanks for Julian
2336 Squires, Sean Champ and Raymond Toy)
2337 * bug fix: incorrect expansion of defgeneric that caused a style
2338 warning. (thanks for Zach Beane)
2339 * bug fix: slot accessor effective method computation works properly
2340 for classes with multiple non-standard applicable methods on
2341 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2342 * on x86 compiler supports stack allocation of results of LIST and
2343 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2344 CMUCL implementation by Gerd Moellmann)
2345 * fixed some bugs revealed by Paul Dietz' test suite:
2346 ** FORMAT strings with both the ~<~:;~> form of the justification
2347 directive and pretty-printing directives cause an error.
2349 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2350 * incompatible change: the internal functions
2351 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2352 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2353 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2354 instead of the old functions.
2355 * new feature: on platforms where "dladdr" is available foreign
2356 function names now appear in backtraces. (based on Helmut Eller's
2358 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2359 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2361 * documentation: ASDF manual is now distributed with SBCL.
2362 * bug fix: SBCL can now load its contributed modules with REQUIRE
2363 even if the system-provided entries have been removed from
2364 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2366 * bug fix: backtraces involving undefined functions or assembly
2367 routines are more informative. (thanks to Brian Downing)
2368 * bug fix: mutually referent alien structures now work correctly.
2369 (reported by Rick Taube)
2370 * bug fix: structures defined by WITH-ALIEN can be referred to
2371 within other definitions in the same WITH-ALIEN.
2372 * bug fix: division operators (MOD, TRUNCATE and the like) with
2373 constant zero divisors and integer dividends no longer generate
2375 * bug fix: provide default methods for INPUT-STREAM-P and
2376 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2377 * bug fix: improve the detection and resolution of MOP metacycles
2378 (where effective method computation depends on the generic function
2379 having its effective method computed). (reported by Bruno Haible)
2380 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2381 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2382 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2383 * bug fix: pathnames with relative directory components can be
2384 represented relative to default pathnames.
2385 * optimization: in taking the GCD of bignums, reduce the two bignums
2386 to approximately the same size (using Euclid's algorithm) before
2387 applying the more sophisticated binary GCD. (thanks to Juho
2389 * optimization: COUNT on bitvectors now operates word-at-a-time.
2390 * optimization: ASH with a positive, but not necessarily constant,
2391 (leftwards) shift, when in a modular context, is compiled to a
2393 * fixed some bugs revealed by Paul Dietz' test suite:
2394 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2395 if the corresponding argument is NIL.
2396 ** FORMAT directives accepting a minpad parameter treat negative
2398 ** literal commas as character parameters to FORMAT directives are
2400 ** literal spaces directly after ~<Newline> directives within a
2401 format-logical-block (~:< ~@:>) do not induce :FILL-style
2402 conditional newlines.
2403 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2404 as specified: it no longer includes conditional newlines).
2405 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2407 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2408 :PER-LINE-PREFIX argument does not evaluate to a string.
2410 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2411 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2412 the manual for details; for now, package locks can be disabled by
2413 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2414 if no major problems are found then it is likely that they will be
2415 compiled in unconditionally.
2416 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2417 unsupported operators on all platforms. To load a shared library
2418 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2419 object file, link it into a shared library outside of SBCL and
2420 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2422 * bug workaround: ROOM T and the GC were not working together
2423 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2424 reporting facility aren't preserved. That reporting has been
2425 disabled, so now until and unless someone figures out how to make it
2426 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2427 * minor incompatible change: as threatened around sbcl-0.8.0, the
2428 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2429 The symbols are also exported from SB-PCL for backwards
2430 compatibility, but more so than before SB-PCL should be treated as
2431 an implementation-internal package.
2432 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2434 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2435 It is known as of this release not to work on the Alpha, however.
2436 * fixed bug #167: errors signalled due to illegal syntax in method
2437 bodies are now more legible.
2438 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2439 designators and can hence be used with TYPEP.
2440 * fixed bug #333: CHECK-TYPE now ensures that the type error
2441 signalled, if any, has the right object to be accessed by
2442 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2443 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2444 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2446 * fixed bug #334: programmatic addition of slots using specialized
2447 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2448 and :ALLOCATION :CLASS slots.
2449 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2450 float exponents. (rereported by Peter Seibel)
2451 * fixed a bug: #\Space (and other whitespace characters) are no
2452 longer considered to be macro characters in standard syntax by
2453 GET-MACRO-CHARACTER.
2454 * fixed bug: initialization of condition class metaobjects no longer
2455 causes an instance of the condition to be created. (reported by
2457 * fixed bug: it is now possible to have slots such that
2458 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2459 description is neither :INSTANCE nor :CLASS.
2460 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2461 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2462 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2463 non-standard SLOT-DEFINITION-ALLOCATION values.
2464 * fixed bugs: various race conditions handling exiting threads.
2465 CL-PPCRE's thread torture test now passes.
2466 * fixed arguably-a-bug: GC time proportional to number of threads in
2467 system even when most of them are idle
2468 * optimization: improved performance of BIT and SBIT on bit-vectors.
2469 * .fasl file incompatibility: The fasl file version number has
2470 been incremented because of changes associated with package locks.
2472 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2473 * minor incompatible change: the system no longer provides
2474 optimization hints (conditions which are TYPEP
2475 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2476 mode; these hints are still emitted when higher SPEED optimization
2478 * new contrib module: a sampling profiler (profiling by statistical
2479 sampling, rather than by instrumenting functions) is available as
2480 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2481 * the behaviour of the standard function ED is now customizeable by
2482 third parties through a hook variable: see ED's documentation
2483 string for information on the protocol.
2484 * the compiler no longer emits efficiency notes for (FUNCALL X)
2485 when the type of X is uncertain under default optimization
2487 * fixed bug 276: mutating a binding of a specialized parameter to a
2488 method to something that is not TYPEP the specializer is now
2490 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2491 exhibit the required behaviour on the x86 platform. (thanks to
2492 Peter van Eynde, Eric Marsden and Bruno Haible)
2493 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2494 even for difficult arguments. (reported by Peter Graves)
2495 * fixed bug 141a: the backquote printer now descends quoted
2497 * fixed another bug in backquote printing: no more destructive
2498 modification of the form's list structure. (reported by Brian
2500 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2501 move between its address being taken and the call to
2502 interrupt_thread, fixing a crashing race condition.
2503 * the SB-POSIX contrib implementation has been adjusted so that it
2504 no longer exhibits ridiculously poor performance when constructing
2505 instances corresponding to C structs.
2507 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2508 * minor incompatible change: the sb-grovel contrib now treats C
2509 structures as alien (in the sense of SB-ALIEN) objects rather than
2510 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2511 has implications for memory management of client code
2512 (sb-grovel-returned objects must now be manually managed) and for
2513 type safety (alien objects now have full types).
2514 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2515 used to control emission of compiler diagnostics, rather than the
2516 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2517 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2518 quality should be considered deprecated.
2519 * install.sh now installs the user manual as well
2520 * (not quite a new documentable feature, but worth considering in
2521 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2522 beginnings of a semantically meaningful condition hierarchy is
2523 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2525 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2526 designator as the defaults argument.
2527 * fixed bug: Displaced arrays whose displaced-to array has become
2528 too small now cause ARRAY-DIMENSION to signal an error, providing
2529 for safer bounds-checking. (reported by Bruno Haible)
2530 * fixed bug: DEFCLASS slot definitions with identical :READER and
2531 :WRITER names now signal a reasonable error. (reported by Thomas
2533 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2535 * fixed bug: Invalid slot specification errors now print correctly.
2536 (thanks to Zach Beane)
2537 * fixed bug 320: Shared to local slot value transfers in class
2538 redefinitions now happen corrently from superclasses as
2539 well. (reported by Bruno Haible)
2540 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2542 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2543 improper lists correctly. (reported by Bruno Haible)
2544 * fixed bug 313: source-transform for <fun-name> was erroneously
2545 applied to a call of a value of a variable with name <fun-name>.
2546 (reported by Antonio Menezes Leitao)
2547 * fixed bug 307: The obsolete instance protocol ensures that
2548 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2549 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2550 remove dead unknown-values globs from the middle of the stack.
2551 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2552 easier to resume long computations after using *BREAK-ON-SIGNALS*
2553 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2554 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2555 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2556 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2557 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2558 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2560 * fixed a (fairly theoretical) bug in string printing: if
2561 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2562 does not have array-element-type equal to the most general string
2564 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2565 function name. (thanks to Nikodemus Siivola)
2566 * fixed bug: compile-time format string checker failed on
2567 non-closed ~{. (reported by Thomas F Burdick)
2568 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2569 don't warn on legal loop code involving more than one aggregate
2570 boolean. (thanks to Nikodemus Siivola)
2571 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2572 in keyword position to MAKE-PACKAGE was not being reported as
2574 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2575 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2577 * fixed bugs 280 and 312: the checking for multiple definitions in a
2578 file is less likely to become confused by uses of inline
2580 * fixed bug: the #S reader macro performs the keyword coercion
2581 specified for slot names. (reported by Kalle Niemitalo)
2582 * fixed bug: lambda lists may contain symbols whose names start with
2583 & but are not lambda-list-keywords; their occurrence triggers a
2585 * fixed bug 321: define-method-combination argument lambda lists do
2586 not cause invalid code to be generated when &optional or &aux
2587 variables have default values. (reported by Bruno Haible)
2588 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2589 have CLOS classes; this appears also to have fixed reported
2590 instability in stack exhaustion detection.
2591 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2592 MUFFLE-WARNING when no associated restart is present is now
2594 * optimization: rearranged the expansion of various defining macros
2595 so that each expands into only one top-level form in a
2596 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2598 * optimization: used a previously little-used slot in symbols to
2599 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2601 * fixed some bugs revealed by Paul Dietz' test suite:
2602 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2604 ** Fixed an optimization bug related to inheritance of initforms
2605 from local to shared slots.
2606 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2607 ** CAST optimizer forgot to flush argument derived type.
2608 ** print/read consistency on floats is now orders of magnitude
2609 more likely. (thanks also to Bruno Haible for a similar report
2611 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2612 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2613 for objects of type REAL. Make it so.
2614 ** SXHASH is specified (infelicitously) to respect similarity,
2615 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2616 it so. (thanks to Markus Ziegler)
2617 ** on the Alpha, the compiler succeeds in compiling functions
2618 returning a known number of arguments greater than 63.
2619 ** fixed handling of invalid NIL arguments in keyword position
2621 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2623 ** provided a readably-printable representation for RANDOM-STATE
2625 ** ensured that pathnames, where they have a namestring, always
2626 print using #P"..." syntax.
2628 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2629 * Support for the forthcoming 2.0 version of the NetBSD kernel
2630 running on x86 hardware has been added. (thanks to Perry
2631 E. Metzger most immediately, and others for their past work)
2632 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2633 current release version; SBCL's OpenBSD support had been broken
2634 since about the time of OpenBSD's switch to ELF binary format.)
2635 * [placeholder for DX summary]
2636 ** user code with &REST lists declared dynamic-extent, under high
2637 speed or space and low safety and debug optimization policy.
2638 * The manual has been converted to Texinfo format and the debugger
2639 chapter from the cmucl manual has been added.
2640 * A facility has been added to extract documentation strings from
2641 sbcl and store them as Texinfo-formatted snippets for inclusion in
2642 the manual (via Texinfo's @include directive)
2643 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2644 the test case to Dave Roberts)
2645 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2646 pointers. (reported by Sean Ross)
2647 * bug fix: PROFILE output is printed nicely even for large numerical
2648 values. (thanks to Zach Beane)
2649 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2650 greater than 32 handle EOF correctly.
2651 * bug fix: on X86 an immediate argument of the IMUL instruction is
2652 correctly printed in disassembly. (thanks to Lutz Euler)
2653 * bug fix: class slots in redefined classes preserve their old
2654 values. (thanks to Bruno Haible and Nikodemus Siivola)
2655 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2656 succeeds. (reported by Marco Baringer)
2657 * fixed some bugs revealed by Paul Dietz' test suite:
2658 ** READ-SEQUENCE now works on ECHO-STREAMs.
2659 ** RATIONALIZE works more according to its specification. (thanks
2662 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2663 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2664 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2665 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2666 should matter to you only if you rebind the printer control
2667 variables and then find you want different bindings in the
2668 debugger than in the ordinary execution of your program.)
2669 * The runtime build system has been tweaked to support building
2670 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2671 assembler and linker. (thanks to Nikodemus Siivola)
2672 * Unbound, undefined, undeclared variables now trigger full
2673 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2674 more often programmer error than deliberate exploitation of undefined
2676 * optimization: the hash algorithm for strings has changed to one
2677 that is less vulnerable to spurious collisions. (thanks to Juho
2679 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2680 needless bounds checking. (thanks to Juho Snellman)
2681 * optimization: implemented multiplication as a modular
2682 (UNSIGNED-BYTE 32) operation on the PPC backend.
2683 * fixed some bugs revealed by Paul Dietz' test suite:
2684 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2686 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2687 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2688 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2690 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2692 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2694 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2695 their output stream on EOF from read.
2696 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2697 have been read to end-of-file.
2698 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2700 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2701 description of determination of which consecutive characters
2703 ** Printing the "Space" character with escaping on now yields "#\\ ",
2704 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2705 ** Reading floating-point numbers with *READ-BASE* set to a number
2706 less than 10 works correctly.
2707 ** Reading floating-point numbers with *READ-BASE* set to a number
2708 more than 10 works correctly.
2709 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2710 the readtable currently in effect.
2712 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2713 * minor incompatible change: parsing of namestrings on a physical
2714 (Unix) host has changed; numbers after the final #\. in a
2715 namestring are no longer interpreted as a version field. This is
2716 intented to be largely invisible to the user, except that the
2717 meaning of the namestring "*.*.*" has changed: it now refers to a
2718 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2719 should usually be replaced by
2720 (make-pathname :name :wild :type :wild :version :wild)
2721 with the added benefit that this is more likely to be portable.
2722 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2723 option to OPEN now signals an error if the file being opened
2724 exists; this may have an impact on existing code.
2725 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2726 signals received, on the PowerPC platforms (both Linux and
2727 Darwin). (thanks to Pierre Mai for pointing out the location of
2729 * several fixes on OS X: The system now builds and runs cleanly on
2730 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2731 (thanks to Brian Mastenbrook)
2732 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2733 second-resolution: integer multiples of 1/3600 between -24 and 24.
2734 (thanks to Vincent Arkesteijn)
2735 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2736 type when called with 1 argument; PEEK-CHAR checked type of
2737 PEEK-TYPE only after having read first character from a
2738 stream. (reported by Peter Graves)
2739 * bug fix: the garbage collector now has much better locality
2740 behaviour, and in particular no longer treats all memory as being
2741 exhausted when many small objects point to each other in a deeply
2743 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2744 recognized as being TYPEP their class.
2745 * bug fix: the PUSHNEW documentation string has been corrected.
2746 (thanks to Vincent Arkesteijn)
2747 * bug fix: defaulting of the value for the last of an atypically
2748 large number of multiple values being bound was not being
2749 performed correctly on the Alpha or PPC platforms
2750 * optimization: implemented multiplication as a modular
2751 (UNSIGNED-BYTE 32) operation on the x86 backend.
2752 * optimization: SEARCH on simple-base-strings can now be open-coded.
2753 (see also contrib/compiler-extras.lisp for inspiration for
2754 teaching the compiler about the Boyer-Moore algorithm).
2755 * value, returned by MAX (and MIN) called with several EQUALP, but
2756 not EQL, arguments now does not depend on compiler settings.
2757 * fixed some bugs revealed by Paul Dietz' test suite:
2758 ** in stack analysis liveness information is propagated from
2759 non-local entry points.
2760 ** pathwise CAST removing failed when the CAST node did not start
2762 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2763 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2765 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2766 host is already defined.
2767 ** RENAME-FILE works on streams instead of signalling an internal
2769 ** PEEK-CHAR uses the current readtable when determining whether
2770 or not a character is whitespace.
2771 ** MERGE-PATHNAMES handles the case when the pathname does not
2772 specify a name while the default-pathname specifies a version.
2773 ** Pathnames now stand a better chance of respecting print/read
2775 ** Attempting to use standardized file system operators with a
2776 pathname with invalid :DIRECTORY components signals a
2778 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2780 ** DIRECTORY on logical pathnames is more correct.
2781 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2782 signal a TYPE-ERROR if their argument is not a stream.
2783 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2784 designator argument does not designate a stream.
2785 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2786 examining the synonym.
2787 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2789 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2790 element-type larger than ([UN]SIGNED-BYTE 32).
2792 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2793 * When built with the :SB-FUTEX feature, threaded builds now take
2794 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2795 for faster/more reliable mutex and condition variable support.
2796 * Incompatible change (but one you probably shouldn't have been using
2797 anyway): the interface and code for arbitrating between multiple
2798 threads in the same user session has been redesigned.
2799 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2800 error when called without an explicit environment argument.
2801 (thanks to Nikodemus Siivola)
2802 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2803 confused about their position. (thanks to Adam Warner and Gerd
2805 * bug fix: Pretty printing backquoted forms with unquotations in the
2806 argument list position of various code constructs such as LAMBDA
2807 now works correctly. (reported by Paul Dietz)
2808 * bug fix: Pretty printing unquotations no longer loses all
2809 stream position information.
2810 * optimization: performance of string output streams is now less
2811 poor for multiple small sequence writes.
2812 * optimization: performance of CSUBTYPEP in the presence of complex
2813 expressions involving CONS and NOT many times has been improved.
2814 (reported by Paul Dietz)
2815 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2817 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2818 streams for the REPL, for the debugger, and so on. (thanks to
2820 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2821 * fixed some bugs revealed by Paul Dietz' test suite:
2822 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2823 is ignored if it is too small, rather than propagating through
2824 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2825 ** extremely complex negations of CONS types were not being
2826 sufficiently canonicalized, leading to inconsistencies in
2828 ** VALUES tranformer lost derived type.
2830 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2831 * fixed a bootstrapping bug: the build process no longer assumes
2832 that the various BOOLE-related constants have the same value in
2833 host and target lisps. (noted by Paul Dietz' test suite on an
2834 SBCL binary built from CLISP)
2835 * The system can now be dynamically linked on the MIPS platform,
2836 which enables dynamic loading of foreign code from Lisp. (thanks
2837 to Ralf Baechle for discussions on the MIPS ABI)
2838 * The system now records debugging information for its own source
2839 files in a filesystem-position-independent manner, relative to
2840 the "SYS" logical host.
2841 * fixed a compiler bug: MV-LET convertion did not check references
2842 to the "max args" entry point. (reported by Brian Downing)
2843 * tweaked disassembly notes to be less confident about proclaiming
2844 some instruction as an LRA. (thanks to Brian Downing)
2845 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2846 now each have their own history, command character, and other
2847 characteristics. (thanks to David Lichteblau)
2848 * fixed some bugs revealed by Paul Dietz' test suite:
2849 ** compiler failure in compiling LOGAND expressions including a
2851 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2852 shift greater than 32.
2853 ** FLUSH-DEST did not mark blocks for type check regeneration.
2854 ** HANDLER-CASE failed to accept declarations in handler clauses
2855 in some circumstances.
2857 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2858 * New code in contrib/sb-introspect (still probably not entirely
2859 stable yet) provides some support for smart Lisp development
2860 environments like SLIME.
2861 * The conditions signalled for errors occurring when loading .fasl
2862 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2863 in a way which should help ASDF recover gracefully.
2864 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2865 stuff has been cleaned up. If you code contrib/ stuff, this might
2866 affect you, and you can look at contrib/README, contrib/STANDARDS,
2867 and/or the 0.8.4.27 diff to check.
2868 * In full calls the compiler now does not generate checks for declared
2869 argument types for all arguments.
2870 * various threading fixes
2871 ** and some experimental patches which didn't make it into
2872 the main tree for this release, but which are shipped in
2873 contrib/experimental-thread.patch as a possible fix for some
2874 failures (deadlock, spinning...) in GC-intensive multithreaded
2876 * fixed PPC build problem (source code incompatibility of different
2877 library versions): added offsetof() hackery which attempts to divine
2878 where glibc maintainers put uc_mcontext today
2879 * fixed bug 282: compiler does not trust type assertions while passing
2880 arguments to a full call.
2881 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2882 &OPTIONAL VALUES type parameter.
2883 * fix bug 214: algorithm for noting rejected templates is now more
2884 similar to that of template seletion. (also reported by rydis on
2886 * fixed bug 141b: printing backquoted information readably and prettily
2887 inserts a space where necessary.
2888 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2889 (CHARACTER 10) are now reported as errors, rather than propagated
2890 as unknown types. (reported by piso on #lisp)
2891 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2892 with values NIL and :ERROR. (thanks to Milan Zamazal)
2893 * fixed bug 191c: CLOS now does proper keyword argument checking as
2894 described in CLHS 7.6.5 and 7.6.5.1.
2895 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2896 longer raise an error; further, using a list as a for-as-arithmetic
2897 counter now raises a meaningful error.
2898 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2899 now understood by sequence creation functions such as MAKE-SEQUENCE
2901 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2902 a STRING-INPUT-STREAM.
2903 * compiler enhancement: SIGNUM is now better able to derive the type
2905 * type declarations inside WITH-SLOTS are checked. (reported by
2907 * fixed some bugs revealed by Paul Dietz' test suite:
2908 ** incorrect optimization of TRUNCATE for a positive first
2909 argument and negative second.
2910 ** compiler failure in let-convertion during flushing dead code.
2911 ** compiler failure while deriving type of TRUNCATE on an
2912 interval, containing 0.
2913 ** ASH of a negative bignum by a negative bignum count now returns
2915 ** intersection of CONS types now canonicalizes properly, fixing
2916 inconsistencies in SUBTYPEP.
2918 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2919 * incompatible change: The --disable-debugger command line
2920 option now clobbers the debugger at a more fundamental
2921 level, by redefining #'INVOKE-DEBUGGER instead of by
2922 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2923 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2924 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2925 enter the debugger REPL and then suffer recursive errors
2926 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2927 while under the new system, BREAK in --disable-debugger mode
2928 terminates the system just as an unhandled error would.
2929 * fixed compiler performance when processing loops with a step >1;
2930 * bug fix: DOCUMENTATION now retrieves generic function
2931 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2932 support has been systematized, and now supports the methods
2933 specified by ANSI, along with a default method and a method for
2934 slot documentation. (reported by Nathan Froyd)
2935 * bug fix: effective methods associated with a generic function are
2936 no longer cached over a change of that generic function's method
2937 combination. (reported by Andreas Fuchs)
2938 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2939 names a non-existent directory. (thanks to Andreas Fuchs)
2940 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2941 the PPC platform, lead to stack corruption; this has been fixed.
2942 (reported by Rainer Joswig)
2943 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2944 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2945 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2946 arithmetic in general, is now much more reliable on the PPC
2948 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2949 platform now returns the right answer.
2950 * optimization: restored some effective method precomputation in
2951 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2952 precomputation is now tunable.
2953 * optimization: compiler-internal data structure use has been
2954 reviewed, and changes have been made that should improve the
2955 performance of the compiler by about 20%.
2956 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2957 simple-base-strings and simple-bit-vectors is improved.
2958 * optimization: the optimization of 32-bit logical and arithmetic
2959 functions introduced in version 0.8.3 on the x86 has been
2960 implemented on the mips, ppc and sparc platforms; an
2961 implementation of the same facility, but for 64-bit arithmetic,
2962 has been added for the alpha.
2963 * microoptimization: the compiler is better able to make use of the
2964 x86 LEA instruction for multiplication by constants.
2965 * bug fix: in some situations compiler did not report usage of
2966 generic arithmetic in (SPEED 3) policy.
2967 * bug 145b fix: compiler used wrong type specifier while converting
2968 MEMBER-types to numeric.
2969 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2971 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2972 index argument now works properly on the Alpha platform.
2973 * bug fix: floating point exception treatment on the Alpha platform
2975 * bug fix: FILE-POSITION works much better on string input and
2976 output streams. (thanks to Nikodemus Siivola)
2977 * bug fix: many threading/garbage collection symptoms sorted.
2978 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2979 might be pseudo-atomic.
2980 * internal change: Stopping for GC is now done with signals not
2981 ptrace. GC is now done in whichever thread wanted it, instead of
2983 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2985 * bug fix: result form in DO is not contained in the implicit
2987 * incompatible change: ICR structure is changed; the value part of
2988 CONTINUATION is now called LVAR; corresponding functions are
2989 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2990 * added type deriver for ISQRT (thanks to Robert E. Brown).
2991 * bug fix: better support for loading from the command line when an
2992 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2994 * fixed some bugs revealed by Paul Dietz' test suite:
2995 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2996 ** ROUND and FROUND now give the right answer when given very
2997 small float arguments.
2998 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3000 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3001 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3002 ** LCM should return a non-negative integer.
3003 ** PARSE-INTEGER returned the index of a terminator instead of the
3004 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3005 ** PARSE-INTEGER returned an incorrect index being applied to a
3007 ** LCM with two arguments of 0 returns 0 rather than signalling
3009 ** unsigned addition of a 32-bit constant with the high bit set no
3010 longer causes an internal compiler error on the x86.
3011 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3012 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3013 with negative last argument.
3014 ** byte specifiers with zero size and position no longer cause
3015 an error during type derivation.
3016 ** bignum multiplication on the Alpha platform now returns the
3018 * porting: The system now builds on SuSE AMD64, although it still
3019 generates a 32-bit binary.
3020 * .fasl file incompatibility: The fasl file version number has
3021 been incremented (because of the changes to internal compiler
3022 data structures referred to above).
3024 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3025 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3026 more accurately, on the Darwin kernel running on PowerPC hardware.
3027 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3028 * Compiler code deletion notes now signal a condition of type
3029 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3030 an associated MUFFLE-WARNING restart.
3031 * The compiler now performs limited argument count validation of
3032 constant format strings in FORMAT, and where appropriate in ERROR,
3033 CERROR and WARN. (thanks to Gerd Moellmann)
3034 * New ASDF-INSTALL contrib can be used for automatic download and
3035 installation of third-party Lisp code from CCLAN or other sites
3037 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3038 which forces another thread to execute a function supplied by the
3040 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3041 now accept and act upon their :ELEMENT-TYPE keyword argument.
3042 (reported by Martin Atzmueller, Edi Weitz)
3043 * bug fix: FILE-POSITION now accepts position designators up to
3044 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3045 is the greater. (thanks to Patrik Nordebo)
3046 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3047 Kalle Olavi Niemitalo)
3048 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3049 printable. (reported by Eric Marsden)
3050 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3051 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3052 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3053 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3054 (thanks to Stig Sandoe)
3055 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3056 UNREAD-CHAR now correctly includes the unread character in the
3057 target sequence. (thanks to Gerd Moellmann)
3058 * bug fix in threaded builds: the system can now be suspended and
3059 resumed by shell job control with minimal disruption.
3060 * bug fixes in times and timezones >2038AD
3061 * better handling of "where is GNU make?" problem in build scripts
3062 (thanks to Nikodemus Siivola)
3063 * new optimization: inside a named function any reference to a
3064 function with the same name is considered to be a self-reference;
3065 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3066 optimization quality.
3067 * new optimization on x86: logical functions and + now have
3068 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3069 used when the result is truncated to 32 bits.
3070 * VALUES declaration is partially enabled.
3071 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3072 * fixed some bugs revealed by Paul Dietz' test suite:
3073 ** The system now obeys the constraint imposed by
3074 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3075 types form a lattice under type intersection.
3076 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3077 ** ASSOC now ignores NIL elements in an alist.
3078 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3079 and (1+ MOST-POSITIVE-FIXNUM) answers.
3080 ** The addition of a method with invalid qualifiers to a generic
3081 function does not cause an error to be signalled immediately;
3082 a warning is signalled, and the error is generated only on
3083 calling the generic function.
3084 * changed .fasl file version number, in part to add type codes for
3085 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3086 obscure ANSI requirements
3088 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3089 * fixed bug 148: failure to inline-expand a local function left
3090 garbage, confusing the compiler.
3091 * fixed bugs 3cd: structure slot readers perform type check if the
3092 slot can have an invalid value (i.e. it is either not initialized
3093 or can be written with a less specific slot writer).
3094 * bug fix: the compiler now traps array references to elements off
3095 the end of an array; previously, the bounds checking in some
3096 circumstances could go off-by-one.
3097 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3099 * type declarations for array element types now obey the description
3100 on the CLHS page "Declaration TYPE", as per discussions on
3101 sbcl-help around 2003-05-08. This means that a declaration
3102 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3103 declaration, all references to BAR will be asserted or assumed
3104 (with THE, so dependent on compiler policy) to involve objects of
3105 type FOO. Note that no such declaration is implied in
3106 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3107 * declared types of functions from the "Conditions"
3108 chapter. (reported by Paul Dietz)
3109 * bug fix: CERROR accepts a function as its first argument.
3110 * bug fix: NTH an NTHCDR accept a bignum as index
3111 arguments. (reported by Adam Warner)
3112 * optimization: character compare routines now optimize comparing
3113 against a constant character. (reported by Gilbert Baumann)
3114 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3115 argument now works properly on the MIPS platform.
3116 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3117 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3118 declared to have a functional type, does not cause an error
3120 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3121 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3122 * fixed bug: if last continuation of a deleted block has a
3123 destination, this destination should be deleted too. (reported by
3125 * fixed a bug in the bootstrap process: the host compiler's values
3126 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3127 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3128 test case from Patrik Nordebo)
3129 * improved the ability of the disassembler on the PPC platform to
3130 provide helpful disassembly notes.
3131 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3132 the class in more cases than previously.
3133 * bug fix: FILE-POSITION now understands :START and :END for
3134 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3135 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3136 8) data. (thanks to David Lichteblau)
3137 * bug fix: it is possible to add a method to a generic function
3138 without lambda list.
3139 * bug fix: reader failed to signal END-OF-FILE inside an
3140 object representation. (reported by Nikodemus Siivola)
3141 * fixed some bugs revealed by Paul Dietz' test suite:
3142 ** LAST and [N]BUTLAST should accept a bignum.
3143 ** condition slot accessors are methods.
3144 ** (VECTOR NIL) is a subtype of STRING.
3146 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3147 * minor incompatible change: some nonsensical specialized lambda
3148 lists (used in DEFMETHOD) which were previously ignored now signal
3150 * minor incompatible change: the system is now aware of the types of
3151 variables in the COMMON-LISP package, and will signal errors for
3152 most violations of these type constraints (where previously they
3153 were silently accepted).
3154 * minor incompatible change: COMPILE-FILE now uses the freedom
3155 afforded (ANSI 3.2.2.3) to use derived function types for
3156 functions defined in the same file. This also permits the system
3157 to warn on static type mismatches and function
3158 redefinition. (Currently it does not work with high DEBUG level.)
3159 * minor incompatible change: VALUES declaration is disabled.
3160 * When issuing notes, the compiler now signals a condition of type
3161 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3162 restart for use in user handlers. It is expected that the
3163 COMPILER-NOTE condition will eventually become a condition
3164 supertype to a hierarchy of note types, which will then be
3165 handleable in a similar fashion. However, at the moment, no such
3166 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3167 but it's an implementation detail, not a classification for the
3169 * Changes in type checking closed the following bugs:
3170 ** type checking of unused values (192b, 194d, 203);
3171 ** template selection based on unsafe type assertions (192c, 236);
3172 ** type checking in branches (194bc).
3173 * A short form of VALUES type specifier has ANSI meaning (it has
3174 increased the number of situations when SBCL cannot perform type
3176 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3177 keywords or constants is permissible.
3178 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3179 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3180 classes. (thanks to Antonio Martinez)
3181 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3182 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3183 argument to a pretty-print stream. Instead, it leaves any such
3184 operations to DESCRIBE-OBJECT methods.
3185 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3187 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3188 lambda lists. (thanks to David Lichteblau)
3189 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3190 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3191 (thanks to Gerd Moellmann)
3192 * fixed bug 246: increased compilation speed of long
3193 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3195 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3197 * DEFCONSTANT now throws a condition of type
3198 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3199 constant to a non-EQL value; CONTINUE and ABORT restarts
3200 respectively change and preserve the value.
3201 * fixed bug 63: The code walker, part of the implementation of CLOS,
3202 is now better at handling symbol macros.
3203 * bug fix: There is no longer an internal implementation type named
3204 CL:LENGTH. (reported by Raymond Toy)
3205 * bug fix: In macro-like defining macros/special operators the
3206 implicit block does not enclose the lambda list.
3207 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3208 enclosed in parentheses) are not suitable as type specifiers, and
3209 their use properly signals an error now.
3210 * bug fix: An argument count mismatch for a type specifier in code
3211 being compiled no longer causes an unhandled error at compile
3212 time, but signals a compile-time warning.
3213 * fixed simple vector readable printing
3214 * bug fix: DESCRIBE takes more care over whether the class
3215 precedence list slot of a class is bound before accessing it.
3216 (reported by Markus Krummenacker)
3217 * bug fix: FORMATTER can successfully compile pretty-printer format
3218 strings which use variants of the ~* directive inside.
3219 * bug fix: SEARCH now applies its TEST predicate to the elements of
3220 the arguments in the correct order. (thanks to Wolfhard Buss)
3221 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3222 in type inference. (thanks to Robert E. Brown)
3223 * bug fix: Reading in symbols with an explicit package name of ""
3224 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3225 * fixed some bugs revealed by Paul Dietz' test suite:
3226 ** NIL is now allowed as a structure slot name.
3227 ** Arbitrary numbers, not just REALs, are allowed in certain
3228 circumstances in LOOP for-as-arithmetic clauses.
3229 ** Multiple class redefinitions before slot access no longer
3230 causes a type error.
3231 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3232 association between the name and a class.
3233 ** Generic functions with non-standard method-combination and over
3234 five methods all of which return constants no longer return NIL
3235 after the first few invocations. (thanks to Gerd Moellmann)
3236 ** CALL-NEXT-METHOD with no arguments now passes the original
3237 values of the arguments, even in the presence of assignment.
3238 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3240 ** DISASSEMBLE works with closures and funcallable instances.
3241 ** ADD-METHOD now returns the generic function, not the new method.
3242 ** FIND-METHOD signals an error if the lengths of the specializers
3243 is incompatible with the generic function, even if the ERRORP
3245 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3246 which its argument is a member.
3247 ** DEFCLASS only redefines the class named by its class-name
3248 argument if that name is the proper name of the class;
3249 otherwise, it creates a new class.
3250 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3251 of the UNBOUND-SLOT condition to the name of the slot.
3252 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3253 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3254 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3255 SLOT-MAKUNBOUND in the specified fashion.
3257 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3258 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3259 cross-compilation host. As a consequence, we can now bootstrap our
3260 way up to SBCL starting with a bare gcc toolchain and human-readable
3261 source code (first the source to CLISP, then the source to SBCL).
3262 * A contributed module containing a partial implementation of the
3263 simple-streams interface has been included. (thanks to Rudi
3265 * A contributed module implementing the RFC1321 Message Digest
3266 Algorithm, known as MD5, has been included.
3267 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3268 no longer has any effect, as the code controlled by this feature
3269 has been deleted. (As far as we know, no-one has ever built using
3270 this feature, and its semantics were confused in any case).
3271 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3272 work on conditions (as required by the ANSI specification),
3273 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3274 expected behaviour on conditions. Users should note, however,
3275 that such behaviour is not required by the ANSI specification,
3276 and so use of this behaviour may render their code unportable.
3277 * fixed some bugs revealed by Paul Dietz' test suite:
3278 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3280 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3281 ** SXHASH on condition objects no longer returns NIL.
3282 ** :ALLOCATION :CLASS slots are better treated; their values are
3283 updated on class redefinition, and initforms inherited from
3284 superclasses are applied.
3285 ** REMOVE-METHOD returns its generic function argument even when
3286 no method was removed.
3287 ** SHARED-INITIALIZE now initializes the values of the requested
3288 slots, including those with :ALLOCATION :CLASS.
3289 ** ALLOCATE-INSTANCE now works on structure classes defined via
3290 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3292 ** SLOT-EXISTS-P now works on conditions, as well as structures
3294 ** MAKE-LOAD-FORM now has the required methods on
3295 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3296 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3297 keyword, and now implements the SLOT-NAMES argument.
3298 ** methods with &OPTIONAL arguments no longer allow too many
3299 arguments to be passed in the call without error.
3300 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3301 option is consistent with the required arguments of the generic
3302 function lambda list.
3303 * bug fix: REQUIRE accepts a string designator. (Thanks to
3305 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3306 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3307 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3308 * bug fix: The compiler now checks for duplicated variables in macro
3310 * bug fix: SETQ on globals returns the correct value.
3311 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3312 not a COMPILER-ERROR (followed by some other strange error on
3313 choosing the CONTINUE restart).
3314 * bug fix: make.sh and friends are now more consistent in the way that
3315 they look for GNU "make".
3317 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3318 * experimental native threads support (on x86 Linux >=2.4 only).
3319 This is not compiled in by default: you need to add :SB-THREAD to
3320 the target features. See the "Beyond ANSI" chapter of the manual
3322 * fix for longstanding nonANSIism: The old distinction between
3323 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3324 The return value from CL:FIND-CLASS is now a CLOS class, and
3325 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3326 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3327 * An interface to the MetaObject Protocol, as described in Kiczales,
3328 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3329 MIT Press, 1991, is available from the SB-MOP package.
3330 * incompatible change: the SB-PCL package should now be considered
3331 a private implementation detail, and no longer a semi-private MOP
3333 * minor incompatible change: due to rearrangement for threads, the
3334 control stack and binding stack are now allocated at arbitrary
3335 addresses instead of being hardcoded per-port. Users affected by
3336 this probably have to be doing advanced things with shared
3337 libraries, and will know who they are.
3338 * minor incompatible change: Previously, all --eval forms used were
3339 processed with READ before any of them were processed with EVAL.
3340 Now each --eval form is processed with both READ and EVAL before
3341 the next --eval form is processed. (Thus package operations like
3342 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3343 work as the user might reasonably expect.)
3344 * minor incompatible change: *STANDARD-INPUT* is now only an
3345 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3347 * minor incompatible change: Y-OR-N-P is now character-oriented,
3348 not line oriented. Also, YES-OR-NO-P now works without errors.
3349 (thanks to Antonio Martinez)
3350 * sb-aclrepl module improvements: an integrated inspector, added
3351 repl features, and a bug fix to :trace command.
3352 * Known functions, which cannot be open coded by the backend, are
3353 considered to be able to check types of their arguments. (fixing
3354 a bug report by Nathan J. Froyd)
3355 * fixed a bug in computing method discriminating functions: It is
3356 now possible to define methods specialized on classes which have
3357 forward-referenced superclasses. (thanks to Gerd Moellmann)
3358 * fixed evaluation order in optional entries (reported by Gilbert
3360 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3361 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3362 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3363 required-by-AMOP NAME argument, as well as CLASS and
3364 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3365 * fixed bug 20: DEFMETHOD can define methods using names that are
3366 not the proper names of classes to designate class specializers.
3367 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3368 Unix file descriptors, instead of blowing up. (thanks to Antonio
3370 * Garbage collection refactoring: user-visible change is that a
3371 call to the GC function during WITHOUT-GCING will not do garbage
3372 collection until the end of the WITHOUT-GCING. If you were doing
3373 this you were probably losing anyway.
3374 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3375 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3376 TYPEP the latter but not the former.
3377 * The compiler issues a full WARNING for calls to undefined functions
3378 with names from the CL package.
3379 * MAP-INTO for a vector destination is open coded. (reported by
3380 Brian Downing on c.l.l)
3381 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3382 documentation string.
3383 * fixed some bugs revealed by Paul Dietz' test suite:
3384 ** COPY-ALIST now signals an error if its argument is a dotted
3386 ** Condition slots are now accessed more correctly in the presence
3387 of multiple initargs for a given slot.
3388 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3389 exclude restarts of the same name associated with a different
3391 ** DEFCLASS of forward-referenced classes with another
3392 forward-referenced class in the superclasses list no longer
3394 ** Condition slots are now initialized once each, not multiple
3395 times. (thanks to Gerd Moellmann)
3396 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3398 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3399 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3400 arguments contain duplicated elements.
3401 ** RESTART-CASE understands local macros.
3402 ** RESTART-CASE associates exactly its own restarts with a condition.
3403 ** ENDP in safe mode checks its argument to be of type LIST.
3404 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3405 in question is unbound.
3406 ** Optimized MAKE-INSTANCE functions no longer cause internal
3407 assertion failures in the presence of duplicate initargs.
3408 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3409 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3410 propagated even in the ctor optimized implementation of
3412 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3414 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3415 * a better implementation of SXHASH on (simple) bit vectors,
3416 measured both in execution speed and in distribution of results
3417 over the positive fixnums, has been installed. Likewise, a better
3418 implementation of EQUAL for simple bit vectors is now available.
3419 * fixed CEILING optimization for a divisor of form 2^k.
3420 * fixed bug 240 (emitting extra style warnings "using the lexical
3421 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3422 by Antonio Martinez)
3423 * fixed SXHASH, giving different results for NIL depending on type
3424 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3425 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3426 variable. (found by Rolf Wester)
3427 * SBCL does not ignore type declarations for special
3428 variables. (reported by rif on c.l.l 2003-03-05)
3429 * some bug fixes in contrib/sb-aclrepl/
3430 * fixed some bugs revealed by Paul Dietz' test suite:
3431 ** a bug in the CONS type specifier, whereby the CAR and CDR
3432 types got intertwined, has been fixed;
3433 ** the type system is now able to reason about the interaction
3434 between INTEGER and RATIO types more completely;
3435 ** APPEND, [N]REVERSE and NRECONC check that those their
3436 arguments, which must be proper lists, are really so;
3437 ** An array specialized to be unable to hold elements has been
3438 implemented, as required -- yes, really -- by ANSI;
3439 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3440 on malformed property lists;
3442 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3443 * incompatible packaging change: in line with Unix convention,
3444 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3445 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3446 * REQUIRE and PROVIDE are now optionally capable of doing something
3447 useful. See the documentation string for REQUIRE.
3448 * infrastructure for a managed SBCL contrib system: contributed
3449 modules in this release include:
3450 ** the ASDF system definition facility;
3451 ** an interface to the BSD Sockets API;
3452 ** an ACL-like convenience interface to the repl;
3453 (thanks to Kevin Rosenberg)
3454 ** an implementation of ROTATE-BYTE, with efficient implementation
3456 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3457 gives a closer approximation to the right answer than previously.
3458 (thanks to Raymond Toy)
3459 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3460 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3461 optional environment arguments, as required by ANSI.
3462 * fixed bugs in other functions taking environment objects, allowing
3463 calls with an explicit NIL environment argument to be compiled
3465 * fixed bug 228: primary return values from
3466 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3467 COMPILE or FUNCTION.
3468 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3469 :TYPE will no longer signal errors on innocuous objects.
3470 * fixed bug 231b: SETQ is better at respecting type declarations in
3471 the lexical environment.
3472 * fixed a bug in DEFCLASS: classes named by symbols with no or
3473 unprintable packages can now be defined.
3474 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3475 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3476 * fixed compiler failure related to checking types of functions.
3477 (reported by Robert E. Brown)
3478 * the compiler is now much more consistent in its error-checking
3479 treatment of bounding index arguments to sequence functions: in
3480 (SAFETY 3) code, errors will be signalled in almost all cases if
3481 invalid sequence bounding indices are passed to functions defined
3482 by ANSI to operate on sequences.
3483 * fixed a bug in the build procedure: documentation of SBCL-specific
3484 packages is now preserved and available in the final Lisp image.
3485 * lifted FDEFINITION lookup out of loops in the implementation of
3486 many list operations. (thanks to Robert E. Brown)
3487 * fixed a bug in the reader: the #n# reader macro now works for
3488 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3489 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3490 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3491 E. Brown and Tony Martinez respectively)
3492 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3493 SLOT-BOUNDP: in particular, it is now able to optimize them much
3494 better, and is now not vulnerable to having packages renamed.
3495 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3496 always called when a slot is not present in an instance. (thanks
3498 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3499 longer signal an error on unreading a character following EOF on
3500 the previous constituent stream. (thanks to Tony Martinez)
3501 * fixed some bugs revealed by Paul Dietz' test suite:
3502 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3503 not just nonnegative fixnums;
3504 ** the logical bit-array operators such as BIT-AND now accept an
3505 explicit NIL for their "opt-arg" argument (to indicate a
3506 freshly-consed result bit-array);
3507 ** ELT now signals an error on an invalid sequence index in safe
3509 ** the type system is now cleverer about negations of numeric
3510 types, and consequently understands the BIGNUM and RATIO types
3512 ** the type system is now cleverer about the interaction between
3513 INTEGER and RATIO types: while bugs still remain, many more
3514 cases are accurately computed;
3515 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3516 if it is in the last clause;
3517 ** CONSTANTLY now correctly returns a side-effect-free function in
3519 ** DECLARE is no longer treated as a special-operator; in
3520 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3521 * incremented fasl file version number due to the change in the
3522 DEFSTRUCT-SLOT-DESCRIPTION structure.
3524 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3525 * minor incompatible change: code processed by the "interpreter" or
3526 EVAL now has a compilation optimization policy of (DEBUG 2)
3527 (changed from (DEBUG 1)) to improve debuggability of interactive
3528 development, and to allow the use of the debug RETURN command in
3530 * an experimental implementation of the RETURN command for the
3531 debugger has been included. (thanks to Frederik Kuivinen)
3532 * fixed bug 62: constraints were not propagated into a loop.
3533 * fixed bug in embedded calls of SORT (reported and investigated by
3535 * fixed some bugs revealed by Paul Dietz' test suite:
3536 ** printing and reading of arrays with some dimensions having
3537 length 0 (thanks to Gerd Moellmann);
3538 ** BOA constructor with &AUX argument without a default value does
3539 not cause a type error;
3540 ** CONSTANTP now returns true for all self-evaluating objects.
3542 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3543 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3544 accessors that are related by inheritance, as specified in the
3545 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3546 Valtteri Vuorikoski)
3547 * The compiler is now able to inline functions that were defined in
3548 a complex lexical environment (e.g. inside a MACROLET).
3549 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3551 * Support for the upcoming FreeBSD-5.0 release has been included.
3552 (thanks to Dag-Erling Smorgrav)
3553 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3554 effect when it is not in a toplevel context.
3555 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3556 stand a better chance of being correct. (thanks to Gerd
3558 * fixed bug in COERCE, which now signals an error on coercing a
3559 rational to a bounded real type which excludes the expected
3561 * The compiler is now able to derive types more accurately from the
3562 COERCE and COMPILE functions.
3563 * fixed bug 223: functional binding is considered to be constant
3564 only for symbols in the CL package.
3565 * fixed bug 231: SETQ did not check the type of a variable being set
3566 (reported by Robert E. Brown)
3567 * A new optimization for MAKE-INSTANCE has been included, fixing
3568 various bugs (including relating to :ALLOCATION :CLASS slots and
3569 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3571 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3572 ** As required by ANSI, LOOP now disallows anonymous collection
3573 clauses such as COLLECT I in conjunction with aggregate boolean
3574 clauses such as THEREIS (= I 1);
3575 ** LOOP now signals an error when any variable is reused in the
3576 same loop (including the potentially useful construct analogous
3577 to WITH A = 1 WITH A = (1+ A);
3578 ** IT is only a special loop symbol within the first clause of a
3579 conditional loop clause;
3580 ** LOOP with a typed iteration variable over a hashtable now
3581 signals a type error iff it should.
3582 * fixed some other bugs revealed by Paul Dietz' test suite:
3583 ** FILE-STREAM now names the class previously known as FD-STREAM;
3584 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3585 argument) no longer signals an error;
3586 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3587 of the slot symbol, rather than using the current package
3588 ((:CONC-NAME "") continues to intern the slot's name in the
3590 * incremented fasl file version number, because of the incompatible
3591 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3592 of the new implementation of DEFINE-COMPILER-MACRO.
3594 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3595 * Support for building SBCL for MIPS platforms running in
3596 little-endian mode has now been checked in, and basic
3597 functionality on said platforms verified.
3598 * minor incompatible change: PCL now records the pathname of a file
3599 in which methods and the like are defined, rather than its
3601 * minor incompatible change: TRUENAME now considers the truename of
3602 a file naming a directory to be the pathname with :DIRECTORY
3603 component indicating that directory.
3604 * minor incompatible change: a NAMED clause in the extended form of
3605 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3606 reason for the previous behaviour is unclear.
3607 * more systematization and improvement of CLOS and MOP conformance
3608 in PCL (thanks to Gerd Moellman and Pierre Mai):
3609 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3611 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3612 primary methods with no specializers;
3613 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3615 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3616 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3617 FORWARD-REFERENCED-CLASSes; error reporting on
3618 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3620 ** SXHASH on CLOS instances now uses a slot internal to the
3621 instance to return different numbers on distinct instances,
3622 while preserving the same return value through invocations of
3624 ** DEFMETHOD signals errors when methods with longer incongruent
3625 lambda lists are added to generic functions;
3626 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3627 CLASS, as specified in AMOP;
3628 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3629 on the order returned by the primary method for classes of
3630 class STANDARD-CLASS;
3631 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3632 * fixed some bugs shown by Paul Dietz' test suite:
3633 ** DOLIST puts its body in TAGBODY;
3634 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3636 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3637 value producing form;
3638 ** if more variables are given to PROGV than values, extra
3639 variables are bound and made to have no value;
3640 ** NSUBSTITUTE on list arguments gets the right answer with
3642 ** ELT signals an error of type TYPE-ERROR when the index argument
3643 is not a valid sequence index;
3644 ** LOOP signals (at macroexpansion time) an error of type
3645 PROGRAM-ERROR when duplicate variable names are found;
3646 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3647 ** FUNCALL of special-operators now cause an error of type
3649 ** PSETQ now works as required in the presence of side-effecting
3650 symbol-macro places;
3651 ** NCONC accepts any object as its last argument;
3652 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3654 ** loop-for-as-package does not require a package to be explicitely
3656 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3658 * fixed bug 166: compiler preserves "there is a way to go"
3659 invariant when deleting code.
3660 * fixed bug 172: macro lambda lists with required arguments after
3661 &REST arguments now cause an error to be signalled. (thanks to
3663 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3664 bug. (thanks to Matthew Danish)
3665 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3667 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3668 arguments are lexically rebound. (thanks to Gerd Moellmann and
3670 * fixed bug 194: error messages are now more informative when there
3671 is no primary method applicable in a call to a generic
3672 function. (thanks to Gerd Moellmann)
3673 * fixed bug in command line argument checking (thanks to Julian
3675 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3676 (thanks to Matthew Danish)
3677 * incremented fasl file version number, because of the
3678 SXHASH-related changes in the layout of CLOS data structures
3680 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3681 * minor incompatible change: The runtime (the Unix executable named
3682 "sbcl") is now much pickier about the .core files it will load.
3683 Essentially it now requires .core files to descend from the same
3684 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3685 as the runtime does. (The intent is to prevent the crashes which
3686 can occur, and which can even be reported as mysterious failures,
3687 when people patch the sources or change the build parameters
3688 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3689 sbcl and .core files.)
3690 * fixed bug: VALUES-LIST is no longer optimized away.
3691 * fixed bug 142: The FFI conversion of C string values to Lisp
3692 string values no longer conses excessively. (thanks to Nathan
3693 Froyd porting Raymond Toy's fix to CMU CL)
3694 * began to systematize and improve MOP conformance in PCL (thanks to
3695 Nathan Froyd, Gerd Moellman and Pierre Mai):
3696 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3698 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3699 ** FINALIZE-INHERITANCE is now called on class finalization;
3700 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3701 argument precedence order.
3702 * fixed bug 202: The compiler no longer fails on functions whose
3703 derived types contradict their declared type.
3704 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3705 so it can be non-toplevel.
3706 * The fasl file version number has changed (because of the new
3707 implementation of DEFMACRO).
3708 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3709 safe code, that any length requirement by their type-specifier
3710 argument is valid. The exceptions to this are described in bug
3712 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3713 functions now check the types of their inputs as required by ANSI.
3714 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3715 introduced symbol is DECLAREd to be SPECIAL.
3716 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3717 * fixed bug: :COUNT argument to sequence functions may be negative
3718 * fixed bug: body of DO-SYMBOLS may contain declarations
3719 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3720 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3721 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3722 symbol macro only once
3723 * fixed printing of call frame when argument list is unavailable
3724 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3725 * compiler no longer signals WARNING on unknown keyword
3728 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3729 * A beta-quality port to the mips architecture running Linux,
3730 based on the old CMUCL backend, has been made. It has been tested
3731 on a big-endian kernel, and works sufficiently well to be able to
3732 rebuild itself; it has not been tested in little-endian mode.
3733 * fixed an inconsistency between gencgc.c and purify.c which made
3734 dumping/loading .core files unreliable
3735 * fixed bug 120a: The compiler now deals correctly with IFs where
3736 the consequent is the same as the alternative, instead of
3737 misderiving the return type. (thanks to Alexey Dejneka)
3738 * fixed bug 113: Logical pathnames are now dumpable (the logical
3739 host is resolved at load-time, throwing an error if it is not
3741 * fixed bug 174: FORMAT's error message is slightly clearer when a
3742 non-printing character is used in a format directive.
3743 * fixed several bugs in compiler checking of type declarations, i.e.
3744 violations of the Python "declarations are assertions" principle
3745 (thanks to Alexey Dejneka)
3746 * fixed several bugs in PCL's error checking (thanks to Gerd
3748 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3750 * fixed bug in compilation of functions as first class values
3751 (thanks to Antonio Martinez-Shotton)
3752 * The compiler's handling TYPE-ERRORs which it can prove will
3753 inevitably happen at runtime has been cleaned up and corrected
3754 in several ways. (thanks to Alexey Dejneka)
3755 * improved argument type checking for various basic arithmetic
3756 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3757 lavished on them in the past that they can be compiled in many
3758 ways in different special cases
3759 * fixed bug 181: compiler checks validity of user supplied type
3761 * cleaned up code flushing in optimization: Function calls which
3762 should signal errors for safety purposes (e.g. which ANSI says
3763 should signal errors when their arguments are of incorrect type)
3764 are no longer optimized away.
3765 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3766 * incremented fasl file version number, because changes in the
3767 implementation of sequence functions like COERCE caused
3768 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3769 in old inline expansions) to become undefined. (Actually these
3770 changes were later undone, so we might very well be binary
3771 compatible with 0.7.7 after all, but leaving the version number
3772 incremented seemed like the simplest and most conservative
3775 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3776 * An alpha-quality port to the parisc architecture running Linux,
3777 based on the old CMUCL backend, has been made. This, even more so
3778 than the other backends, should be considered still a work in
3779 progress; known problems include that the Linux kernel in 64-bit
3780 mode does not propagate the correct sigcontext structure to
3781 userspace, and consequently SBCL on a parisc64 kernel will not
3783 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3784 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3785 suppressed.) Also now that the compiler is looking at declarations
3786 in the environment, it checks optimization declarations as well,
3787 and suppresses inlining when (> DEBUG SPEED).
3788 * More fixes have been made to treatment of floating point exception
3789 treatment and other Unix signals. In particular, floating point
3790 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3791 * The detection and handling of control stack exhaustion (infinite
3792 or very deeply nested recursion) has changed. Stack exhaustion
3793 detection is now done by write-protecting pages at the OS level
3794 and applies at all optimization settings; when found, a
3795 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3796 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3797 be caught using IGNORE-ERRORS.
3798 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3799 correctly when transforming recursive LABELS functions to LETs.
3800 (thanks to Alexey Dejneka)
3801 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3802 that are names of constants or global variables.
3803 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3804 alien routines with docstrings.
3805 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3806 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3808 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3809 (thanks to Eric Marsden)
3810 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3811 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3812 * Bug fix: The SPARC backend can now compile functions involving
3813 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3814 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3815 to a functions expecting a PATHNAME-DESIGNATOR.
3816 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3817 lambda lists. (thanks to Alexey Dejneka)
3818 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3819 functions so that EXPORTing the name of the class doesn't cause
3820 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3821 to Antonio Martinez for reporting this)
3822 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3823 constant-folded without failing an assertion. (thanks to Einar
3824 Floystad Dorum for reporting this)
3825 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3826 types are now dealt with more correctly by the compiler.
3827 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3828 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3829 behaviour analogous to RENAME-FILE. This puts its behaviour more
3830 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3832 * The fasl file version number has changed again. (because of the
3833 bug fix involving the names of PCL MAKE-INSTANCE functions)
3835 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3836 * bug fix: Floating point exceptions are treated much more
3837 consistently on the x86/Linux and PPC/Linux platforms.
3838 * Array initialization with :INITIAL-ELEMENT is now much faster for
3839 cases when the compiler cannot open code the array creation, but
3840 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3841 array accesses have also seen a speed increase.
3842 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3843 specified. (This was at the root of some bad interactions between
3844 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3846 * bug fix: Internal error arguments for undefined functions are now
3847 computed correctly on the PPC/Linux platform.
3848 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3849 Raymond Toy's patch for CMU CL)
3850 * Support for the Solaris 9 operating environment has been included
3851 (thanks to Daniel Merritt)
3852 * A very ugly but hopefully complete draft of the missing FFI chapter
3853 of the manual has been created by reformatting the corresponding
3854 CMU CL manual chapter into (currently very ugly and incoherent)
3855 DocBook and bringing it up to date for SBCL behavior. Thus, the
3856 manual is now essentially complete, at least by my extreme
3857 once-and-only-once standards, whereby it's acceptable to refer to
3858 the doc strings of SB-EXT functions as the primary documentation.
3859 * The fasl file version number has changed again, due to cleanup of
3860 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3861 is no longer a static symbol.)
3863 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3864 * SBCL now builds with OpenMCL (version 0.12) as the
3865 cross-compilation host; also, more progress has been made toward
3866 bootstrapping under CLISP.
3867 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3869 * bug 158 fixed: The compiler can now deal with integer loop
3870 increments different from 1; fixing this turned out also to fix
3872 * bug 169 fixed: no more bogus warnings about using lexical bindings
3873 despite the presence of perfectly good SPECIAL declarations (thanks
3874 to David Lichteblau)
3875 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3876 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3877 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3879 * bug 180 fixed: Method combination specifications no longer ignore
3880 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3881 * bug fix: Structure type predicate functions now check their argument
3882 count as they should.
3883 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3884 correctly. (thanks to Pierre Mai)
3885 * minor incompatible change: The --noprogrammer option is deprecated
3886 in favor of the new --disable-debugger option, which is very similar.
3887 (The major difference is that it takes effect at a slightly different
3888 time at startup, causing handling of errors in --sysinit and
3889 --userinit files will be affected differently.) The
3890 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3891 been added to allow this functionality to be controlled from ordinary
3892 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3893 maintainers, who might want to run non-interactive scripts to
3894 build SBCL cores which will later be used interactively.)
3895 * minor incompatible change: The LOAD function no longer, when given
3896 a wild pathname to load, loads all files matching that pathname.
3897 Instead, an error of type FILE-ERROR is signalled.
3899 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3900 * bug 147 fixed: The compiler preserves its block link/count
3901 invariants more correctly now so that it doesn't crash. (thanks
3903 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3905 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3906 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3907 no-value-for-this-character as NIL (as specified by ANSI).
3908 * HOST-NAMESTRING on physical pathnames now returns a string that is
3909 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3910 (thanks to Christophe Rhodes)
3911 * The Alpha port handles icache flushing more correctly. (thanks to
3913 * More progress has been made toward bootstrapping under CLISP. (thanks
3914 to Christophe Rhodes)
3915 * The fasl file format has changed again, because dynamic loading
3916 on OpenBSD (which has non-ELF object files) motivated some cleanups
3917 in the way that foreign symbols are transformed and passed around.
3918 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3919 is no longer treated as whitespace by the reader, but instead as
3920 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3921 |A
\7fB|, instead of A as it used to.
3923 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3924 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3925 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3926 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3927 this as of 0.7.1.45, but was left out of the previous news section
3928 (thanks to Dan Barlow)
3929 * SBCL now runs on the Solaris operating system on SPARC architectures
3930 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3931 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3932 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3933 * SPARC backend cleanups, allowing builds of cores optimized for V8
3934 and V9 SPARCS, and also emission of code targeted to a particular
3935 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3937 * SBCL is closer to bootstrapping under CLISP, thanks to various
3938 fixes by Christophe Rhodes.
3939 * The fasl file format has changed again, to allow the compiler's
3940 INFO database to support symbol macros.
3941 * The user manual (in doc/) is formatted into HTML more nicely.
3942 (thanks to coreythomas)
3943 * The system is smarter about SUBTYPEP relationships, especially
3944 those involving NOT types (including types such as ATOM which are
3945 represented internally using NOT types). Thus SUBTYPEP is less
3946 likely to return (VALUES NIL NIL) in general, and in particular
3947 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3949 * The fasl file format has changed again, because the internal
3950 representation of types now includes a new slot to support the new
3951 SUBTYPEP-of-NOT-types logic.
3952 * (not a change in the main branch of SBCL, but a related prototype
3953 which can hopefully be merged into the main branch of SBCL in the
3954 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3955 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3956 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3957 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3958 dispatch macro character combinations. (thanks to Alexey Dejneka)
3959 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3960 that superficially look like logical namestrings correctly.
3961 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3963 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3964 default supplied-p) for &optional and &key arguments. (thanks to
3967 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3968 * incompatible change: The compiler is now less aggressive about
3969 tail call optimization, doing it only when (> SPACE DEBUG) or
3970 (> SPEED DEBUG). (This is an incompatible change because there are
3971 programs which relied on the old CMU-CL-style behavior to optimize
3972 away their unbounded recursion which will now die of stack overflow.)
3973 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3974 for non-GENCGC systems has been increased to 20M (since that
3975 seems much closer to the likely performance optimum for modern
3976 systems than the old 4M value was)
3977 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3978 and *DEBUG-PRINT-LEVEL*
3979 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3980 of CMU CL's support for SPARC, and various endianness and other
3981 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3982 * new syntactic sugar for the Unix command line: --load foo.bar is now
3983 an alternate notation for --eval '(load "foo.bar")'.
3985 ** The system now detects stack overflow and handles it gracefully,
3986 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3987 optimization settings. (This is a good thing in general, and
3988 its introduction in this version should be particularly timely
3989 for anyone whose code fails because of suppression of tail
3991 ** The system now hunts for the C variable "environ" in a more
3992 devious way, to avoid segfaults when the C library version differs
3993 between compile time and run time. (thanks to Christophe Rhodes)
3994 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3995 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3996 ** The compiler no longer issues bogus style warnings for undefined
3997 classes in the same source file as the DEFCLASSes which defined
3998 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4000 ** fixes in CONDITION class precedence list for undefined function
4001 errors (thanks to Alexei Dejneka)
4002 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4003 correctly. (thanks to Dan Barlow)
4004 ** portability fixes aiming at bootstrapping under CLISP (thanks
4005 to Dave McDonald and Christophe Rhodes)
4006 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4007 ** fixes in type translation and and type inference (thanks to
4009 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4010 ** various fixes in the new ports (thanks to Dan Barlow)
4011 * several changes related to debugging:
4012 ** suppression of tail recursion, as noted above
4013 ** stack overflow detection, as noted above
4014 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4015 is now the default. (For some time encapsulation has been more
4016 reliable than the breakpoint-based :ENCAPSULATE NIL
4017 implementation, at least on X86 systems; and I just noticed that
4018 encapsulation also seems closer to the spirit of the ANSI
4021 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4023 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4024 up properly again. (There was a packaging bug in 0.7.0 which
4025 left their definitions in SB-SYS::LOAD-FOREIGN and
4026 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4027 vital for most things which interface to C-level interfaces,
4028 like extensions working with sockets or databases or
4029 Perl-compatible regexes or whatever, and the need to fix
4030 this bug is the main reason that 0.7.1 was released so
4032 ** DEFGENERIC is now choosier about the methods it redefines, so that
4033 reLOADing a previously-LOADed file containing DEFGENERICs does
4034 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4035 cycle now works as it should. (thanks to Alexey Dejneka)
4036 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4037 fixed by Christophe Rhodes. (He actually submitted this patch
4038 months ago, and I delayed until after 0.7.0.)
4039 ** Bug 111 (internal compiler confusion about runtime checks on
4040 FUNCTION types) was fixed by Alexey Dejneka.
4041 * Some internal cleanups (getting rid of variables which aren't
4042 needed now that the byte interpreter is gone) caused the fasl
4043 file format number to change again.
4045 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4046 * major incompatible change: The default fasl file extension, i.e. the
4047 default extension for files produced by COMPILE-FILE, has changed
4048 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4050 ** There are many changes in the implementation of the compiler.
4051 SBCL is now essentially a compiler-only implementation of ANSI
4052 Common Lisp. EVAL still "interprets" a few special cases, but
4053 almost all the interesting cases are handled by creating
4054 a LAMBDA expression, calling COMPILE on it, then calling
4055 FUNCALL on the result.
4056 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4057 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4058 Since the code is newer, there might still be some new bugs
4059 (though not as many as before Martin Atzmueller's fixes:-). But
4060 the new code is substantially simpler and clearer, and hopefully
4061 any remaining bugs will be simpler, less fundamental, and more
4062 fixable then the bugs in the old code.
4063 ** The revised compiler is still a little unsteady on its feet.
4065 *** The debugging information it produces (particularly the names
4066 of FUNCTION objects) is sometimes much less useful than what
4067 the old compiler produced.
4068 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4069 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4070 within a MACROLET) has been temporarily weakened.
4071 ** There are new compiler optimizations for various functions:
4072 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4073 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4074 *** the math functions TRUNCATE, FLOOR, and CEILING
4075 *** the function-of-all-trades COERCE
4076 Mostly these should be transparent, but there's one
4077 potentially-annoying problem (bug 117): when the compiler
4078 inline-expands a function and does type analysis on the result,
4079 it can create control paths which have type mismatches, and
4080 when it can't prove that those control paths aren't taken,
4081 it will issue WARNINGs about the type mismatches. This is
4082 a particular problem in practice for the new sequence functions.
4083 It's not clear how this should be fixed, and for now, a
4084 workaround is given in the entry for 117 in the BUGS file.
4085 ** (Because of the interaction between the two previous items --
4086 occasional inlining problems and new inline expansions -- some
4087 of the new sequence function optimizations won't really kick in
4088 completely until debugging information, and then inlining, are
4089 straightened out in some future version.)
4090 * minor incompatible changes:
4091 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4092 DIRECTORY no longer implicitly promotes NIL slots of its
4093 pathname argument to :WILD. In particular, when you ask for the
4094 contents of a directory (which you used to be able to do without
4095 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4096 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4097 ** changes in behavior that ANSI explicitly defines to be
4098 implementation dependent:
4099 *** The new compiler-only implementation still conforms with ANSI,
4100 but acts a little different than before. Besides the obvious
4101 changes in performance tradeoffs (that the cost per form passed
4102 to EVAL has gone up, and the cost per form executed by EVAL
4103 has gone down), the behavior of the system changes a little
4104 because there are no longer any interpreted function objects.
4105 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4106 e.g. doing COMPILE on the output of interactive DEFUN is
4108 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4110 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4111 has changed from (:CL) to NIL.
4112 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4113 e.g. #\Newline and #\Tab, don't have names specified in the
4114 ANSI Common Lisp standard, is now based on their ASCII symbolic
4115 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4116 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4117 are no longer used for output.
4118 ** changes in internal implementation constants:
4119 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4120 4 million. (If your application spends a lot of time GCing and
4121 you have a lot of RAM, you might want to experiment with
4122 increasing it even more.)
4123 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4124 However, almost all old code should still continue to work without
4125 immediate update, as SB-C-CALL is now a (deprecated) nickname
4127 ** Old operator names in the style DEF-FOO are now deprecated in
4128 favor of new corresponding names DEFINE-FOO, for consistency with
4129 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4130 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4131 internal symbols, but a few supported extensions like
4132 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4133 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4134 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4135 etc. as you get deeper into recursive calls to the debugger
4136 command loop, instead of the old "5]", "5]]", "5]]]"
4137 sequence. (I was motivated to do this when squabbles between
4138 ILISP and SBCL left me very deeply nested in the debugger. In the
4139 short term, this change will probably provoke more ILISP/SBCL
4140 squabbles, but hopefully it will be an improvement in the long run.)
4141 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4142 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4143 function, since declaiming return types involving aliens is
4144 (1) annoyingly messy to do by hand and (2) vital to efficient
4145 compilation of code which calls such functions.
4146 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4147 longer reexported by the SB-EXT package. They're solely useful
4148 for alien code, so it seems more logical that you should get
4149 them from the SB-ALIEN package, not in SB-EXT.
4150 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4151 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4152 features. Instead, the code that they used to control is always
4153 built into the system.
4154 * many other bug fixes
4155 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4156 advantage of the new EVAL-WHEN stuff and to clean them up in
4157 general, and they are now more ANSI-compliant in a number of
4158 ways. Martin Atzmueller is responsible for a lot of this.
4159 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4161 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4162 *** correct ERROR type for various file operations
4163 *** some fixes for Lisp streams
4164 *** DEFMETHOD syntax checking
4165 *** changing old weird representation of debug information as
4166 strings (which, among their other deficiencies, don't transform
4167 correctly when you rename packages, and don't change their
4168 print representation when you change things like *PACKAGE*
4169 and *PRINT-LENGTH*) to symbols and lists of symbols
4170 He also made several improvements and fixed several bugs in DESCRIBE.
4171 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4173 *** misbehavior of WRITE-STRING/WRITE-LINE
4174 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4175 and several other LOOP problems as well
4176 *** DIRECTORY when similar filenames are present
4177 *** DEFGENERIC with :METHOD options
4178 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4179 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4180 *** argument ordering in FIND with :TEST option
4181 *** mishandled package designator argument in APROPOS-LIST
4182 *** various problems in the backquote readmacro
4183 *** a bug in APROPOS
4184 *** probably some others that I'm not describing very well here,
4185 since the CVS log documents them by reference to sbcl-devel
4186 messages, and the SourceForge archives aren't working well.:-(
4187 ** Dan Barlow improved the Alpha port (and is making progress on the
4188 PPC port, for those of you who think different).
4189 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4190 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4191 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4192 continues to work on the SPARC port (for those of you in a position
4193 to look down upon our little PC-compatible boxes from a great height).
4194 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4195 and uses that copy, rather than the current dynamic value, when
4196 it's trying to decide whether to truncate output. Thus e.g.
4197 (let ((*print-lines* 50))
4198 (pprint-logical-block (stream nil)
4200 (let ((*print-lines* 8))
4201 (print (aref possiblybigthings i) stream)))))
4202 should now truncate the logical block only at 50 lines, instead of
4203 often truncating it at 8 lines, as it did before.
4204 * The doc/cmucl/ directory, containing old CMU CL documentation
4205 from the time of the fork, is no longer part of the base system.
4206 SourceForge has shut down its anonymous FTP service, and with it
4207 my original plan for distributing the old CMU CL documentation
4208 there. For now, if you need these files you can download an old
4209 SBCL source release and extract them from it.
4210 * The fasl file version number changed again, for dozens of reasons,
4211 some of which are apparent above.
4213 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4214 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4215 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4216 patch, so that DISASSEMBLE output is much nicer.
4217 * The code in the SB-PROFILE package now seems reasonably stable.
4218 I still haven't decided what the final interface should look like
4219 (I'd like PROFILE to interact cleanly with TRACE, since both
4220 facilities use function encapsulation) but if you have a need
4221 for profiling now, you can probably use it successfully with
4222 the current CMU-CL-style interface.
4223 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4224 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4225 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4226 link now returns the dangling link itself, and for similar
4227 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4228 link itself. (In these cases the old code signalled an error and
4229 looped endlessly, respectively.) Thus, DIRECTORY now works even
4230 in the presence of dangling and cyclic symbolic links.
4231 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4232 is now a supported extension again, since the consensus on
4233 sbcl-devel was that it can be useful for ordinary development
4234 work, not just for debugging SBCL itself.
4235 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4236 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4237 that currently-defined functions might be redefined later with
4238 different return types.
4239 * Hash tables can be printed readably, as inspired by CMU CL code
4240 of Eric Marsden and SBCL code of Martin Atzmueller.
4241 * better error handling in CLOS method combination, thanks to
4242 Martin Atzmueller porting Pierre Mai's CMU CL patches
4243 * more overflow fixes for >16Mbyte I/O buffers
4244 * A bug in READ has been fixed, so that now a single Ctrl-D
4245 character suffices to cause end-of-file on character streams.
4246 In particular, now you only need one Ctrl-D at the command
4247 line (not two) to exit SBCL.
4248 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4250 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4251 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4252 does the right thing.
4253 * The implementation of some type tests, especially for CONDITION
4254 types, is now tidier and maybe faster, due to CMU CL code
4255 originally by Douglas Crosher, ported by Martin Atzmueller.
4256 * Some math functions have been fixed, and there are new
4257 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4258 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4259 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4260 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4261 likely to be built into sbcl-0.7.0.)
4262 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4263 CL, ported to SBCL by Martin Atzmueller)
4264 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4265 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4266 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4267 * There's a new slam.sh hack to shorten the edit/compile/debug
4268 cycle for low-level changes to SBCL itself, and a new
4269 :SB-AFTER-XC-CORE target feature to control the generation of
4270 the after-xc.core file needed by slam.sh.
4271 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4272 COMPILE-FILE is no longer supported, so that now every function
4273 gets an entry point, so that block compilation looks a little
4274 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4275 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4276 returns the number of bytes consed since the system started,
4277 rather than the number consed since the first time the function
4278 was called. (The new definition parallels ANSI functions like
4279 CL:GET-INTERNAL-RUN-TIME.)
4280 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4281 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4282 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4283 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4284 * Fasl file version numbers are now independent of the target CPU,
4285 since historically most system changes which required version
4286 number changes have affected all CPUs equally. Similarly,
4287 the byte fasl file version is now equal to the ordinary
4290 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4291 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4292 is no longer recognized. I apologize for this, because it was
4293 listed in SB-EXT as a supported extension, but I found that
4294 its existing behavior was poorly specified, as well as incorrectly
4295 specified, and it looked like too much of a mess to straighten it
4296 out. I have enough on my hands trying to get ANSI stuff to work..
4297 * many patches ported from CMU CL by Martin Atzmueller, with
4298 half a dozen bug fixes in pretty-printing and the debugger, and
4299 half a dozen others elsewhere
4300 * fixed bug 13: Floating point infinities are now supported again.
4301 They might still be a little bit flaky, but thanks to bug reports
4302 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4303 as flaky as they were.
4304 * The --noprogrammer command line option is now supported. (Its
4305 behavior is slightly different in detail from what the old man
4306 page claimed it would do, but it's still appropriate under the
4307 same circumstances that the man page talks about.)
4308 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4309 are now supported, and enabled by default. Thus, the compiler can
4310 handle many floating point and complex operations much less
4311 inefficiently. (Thus e.g. you can implement a complex FFT
4313 * The compiler now detects type mismatches between DECLAIM FTYPE
4314 and DEFUN better, and implements CHECK-TYPE more correctly, and
4315 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4316 thanks to patches from Martin Atzmueller.
4317 * various fixes to make the cross-compiler more portable to
4318 ANSI-conforming-but-different cross-compilation hosts (notably
4319 Lispworks for Windows, following bug reports from Arthur Lemmens)
4320 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4321 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4322 fixed thanks to Pierre Mai's CMU CL patches.
4323 * fixes to keep the system from overflowing internal counters when
4324 it tries to use i/o buffers larger than 16M bytes
4325 * fixed bug 45a: Various internal functions required to support
4326 complex special functions have been merged from CMU CL sources.
4327 (When I was first setting up SBCL, I misunderstood a compile-time
4328 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4329 * improved support for type intersection and union, fixing bug 12
4330 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4331 more obscure bugs as well
4332 * some steps toward byte-compiling non-performance-critical
4333 parts of the system, courtesy of patches from Martin Atzmueller
4334 * Christophe Rhodes has made some debian packages of sbcl at
4335 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4336 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4337 stable, but are nonetheless usable. When he's ready, I'd be happy
4338 to add them to the SourceForge "File Releases" section. (And if
4339 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4340 * new fasl file format version number (because of changes in
4341 internal representation of (OR ..) types to accommodate the new
4342 support for (AND ..) types, among other things)
4344 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4345 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4347 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4349 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4350 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4351 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4352 * DESCRIBE now works on structure objects again.
4353 * Most function call argument type mismatches are now handled as
4354 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4355 know whether the function will be redefined before the call is
4356 executed. (The compiler could flag local calls with full WARNINGs,
4357 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4358 it doesn't keep track of enough information to know whether calls
4359 are local in this sense.)
4360 * Compiler output is now more verbose, with messages truncated
4361 later than before. (There should be some supported way for users
4362 to override the default verbosity, but I haven't decided how to
4363 provide it yet, so this behavior is still controlled by the internal
4364 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4365 src/compiler/ir1util.lisp.)
4366 * Fasl file format version numbers have increased again, because
4367 support for the Gray streams extension changes the layout of the
4368 system's STREAM objects.
4369 * The Gray subclassable streams extension now works, thanks to a
4370 patch from Martin Atzmueller.
4371 * The full LOAD-FOREIGN extension (not just the primitive
4372 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4373 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4374 but like most other programs, it defaults to copying the Unix
4375 environment from the original process instead of starting the
4376 new process in an empty environment.
4377 * Extensions which manipulate the Unix environment now support
4378 an :ENVIRONMENT keyword option which doesn't smash case or
4379 do other bad things. The CMU-CL-style :ENV option is retained
4380 for porting convenience.
4381 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4382 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4384 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4386 * A patch from Martin Atzmueller seems to have solved the SIGINT
4387 problem, and as far as we know, signal-handling now works cleanly.
4388 (If you find any new bugs, please report them!)
4389 * The system no longer defaults Lisp source file names to types
4390 ".l", ".cl", or ".lsp", but only to ".lisp".
4391 * The compiler no longer uses special default file extensions for
4392 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4393 seems to expect a single default extension for all compiled code,
4394 and there's no compelling reason to try to stretch the standard
4395 to allow two different extensions.) Instead, byte-compiled files
4396 default to the same extension as native-compiled files.
4397 * Fasl file format version numbers have increased again, because
4398 a rearrangement of internal implementation packages made some
4399 dumped symbols in old fasl files unreadable in new cores.
4400 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4401 many fewer weird special cases.
4402 * Bug #17 (differing COMPILE-FILE behavior between logical and
4403 physical pathnames) has been fixed, and some related misbehavior too,
4404 thanks to a patch from Martin Atzmueller.
4405 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4406 by Tim Moore, ported to SBCL by Martin Atzmueller.
4407 * Martin Atzmueller fixed several filesystem-related problems,
4408 including bug #36, in part by porting CMU CL patches, which were
4409 written in part by Paul Werkowski.
4410 * More compiler warnings in src/runtime/ are gone, thanks to
4411 more patches from Martin Atzmueller.
4412 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4415 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4417 * DESCRIBE now works on CONDITION objects.
4418 * The debugger now handles errors which arise when trying to print
4419 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4421 * The build system now uses an additional file, customize-target-features.lisp,
4422 to allow local modifications to the target *FEATURES* list. (The point of
4423 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4424 debugging features enabled, without having to worry about propagating it
4425 into everyone's system when I do a "cvs update".) When no
4426 customize-target-features.lisp file exists, the target *FEATURES* list
4427 should be constructed the same way as before.
4428 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4429 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4430 warn about behavior which is undefined under the ANSI spec. Note: This
4431 is specified by ANSI, but it's not very popular with programmers.
4432 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4433 macro in the SBCL sources for an example of a workaround which you
4434 might use to make portable ANSI-standard code which does what you want.
4435 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4436 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4437 when it's used as a non-toplevel form. (This is required in order
4438 to implement the DEFCONSTANT-EQX macro.)
4439 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4440 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4441 funny things, due to bugs in the implementation of EVAL-WHEN
4442 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4443 non-toplevel DEFCONSTANTs are uncommon.)
4444 * The core file version number and fasl file version number have been
4445 incremented, because the old noncompliant DEFCONSTANT behavior involved
4446 calling functions which no longer exist, and because I also took the
4447 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4448 * fixed bug 1 (error handling before read-eval-print loop starts), and
4449 redid debugger restarts and related debugger commands somewhat while
4451 ** The QUIT debugger command is gone, since it did something
4452 rather different than the SB-EXT:QUIT command, and since it never
4453 worked properly outside the main toplevel read/eval/print loop.
4454 Invoking the new TOPLEVEL restart provides the same functionality.
4455 ** The GO debugger command is also gone, since you can just invoke
4456 the CONTINUE restart directly instead.
4457 ** The TOP debugger command is also gone, since it's redundant with the
4458 FRAME 0 command, and since it interfered with abbreviations for the
4460 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4462 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4463 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4464 some porting work by Martin Atzmueller)
4465 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4466 with a boatload of patches which he ported to SBCL. Now that those
4468 ** The system tries to make sure that its low-priority messages
4469 are prefixed by semicolons, to help people who like to use
4470 syntax highlighting in their ILISP buffer. (This patch
4471 was originally due to Raymond Toy.)
4472 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4473 patches originally written by Raymond Toy.
4474 ** The compiler understands coercion between single-value and
4475 multiple-VALUES type expressions better, getting rid of some very
4476 weird behavior, thanks to patches originally by Robert MacLachlan
4477 and Douglas Crosher.
4478 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4479 lambda lists, thanks to a patch originally by Pierre Mai.
4480 ** The system no longer bogusly warns about "abbreviated type
4482 ** The compiler gets less confused by inlining and RETURN-FROM,
4483 thanks to some patches originally by Tim Moore.
4484 ** The system no longer hangs when dumping circular lists to fasl
4485 files, thanks to a patch originally from Douglas Crosher.
4486 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4487 undefined function error.
4488 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4489 in structure slot initforms) for now, documented workaround instead:-|
4490 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4491 * fixed bug 5: added stubs for various Gray stream functions called
4492 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4493 installed, at least appropriate type errors are generated
4494 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4495 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4496 consistently in DEFMETHOD forms.
4497 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4498 it doesn't seem to affect SBCL after all
4499 * The C runtime system now builds with better optimization and many
4500 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4502 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4504 * The system is now under CVS at SourceForge (instead of the
4505 CVS repository on my home machine).
4506 * The new signal handling code has been tweaked to treat register
4507 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4508 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4509 downstream, e.g. in debug-int.lisp, has implicit dependencies
4510 on the unsignedness of integer representation of machine words,
4511 and that caused the system to bomb out with infinite regress
4512 when trying to recover from type errors involving signed values,
4513 e.g. (BUTLAST '(1 2 3) -1).)
4514 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4515 (This was one of the bugs Peter Van Eynde reported back in July.)
4516 * The system now uses code inspired by Colin Walters' O(N)
4517 implementation of MAP (from the cmucl-imp@cons.org mailing
4518 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4519 inline the MAP operation, and there is more than one
4520 sequence argument to the MAP call (so that it can't just
4521 do ETYPECASE once and for all based on the type of the
4522 single sequence argument). (The old non-inline implementation
4523 of the general M-argument sequence-of-length-N case required
4524 O(M*N*N) time when any of the sequence arguments were LISTs.)
4525 * The QUIT :UNIX-CODE keyword argument has been renamed to
4526 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4527 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4529 * Raymond Wiker's patches to port dynamic loading from Linux to
4530 FreeBSD have been added.
4531 * The BUGS file is now more nearly up to date, thanks in large part
4532 to Martin Atzmueller's review of it.
4533 * The debugger now flushes standard output streams before it begins
4534 its output ("debugger invoked" and so forth).
4535 * The core version number and fasl file version number have both
4536 been incremented, because of incompatible changes in the layout
4538 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4539 used to not be called for a saved Lisp image.)
4540 * Martin Atzmueller's version of a patch to fix a compiler crash,
4541 as posted on sbcl-devel 13 September 2000, has been installed.
4542 * Instead of installing Martin Atzmueller's patch for the
4543 compiler transform for SUBSEQ, I deleted the compiler transform,
4544 and transforms for some similar consing operations.
4545 * A bug in signal handling which kept TRACE from working on OpenBSD
4547 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4548 away by constant folding
4549 * The system now defines its address space constants in one place
4550 (in the Lisp sources), and propagates them automatically elsewhere
4551 (through GENESIS and the sbcl.h file). Therefore, patching the
4552 address map is less unnecessarily tedious and error-prone. The
4553 Lisp names of address space constants have also been systematized.
4554 * CVS tags like dollar-Header-dollar have been removed from
4555 the sources, because they have never saved me trouble and
4556 they've been source of trouble working with patches and other
4557 diff-related operations.
4558 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4559 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4561 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4563 * The system has been ported to OpenBSD.
4564 * The system now compiles with a simple "sh make.sh" on the systems
4565 that it's supported on. I.e., now you no longer need to tweak
4566 text in the target-features.lisp-expr and symlinks in src/runtime/
4567 by hand, the make.sh takes care of it for you.
4568 * The system is no longer so grossly inefficient when compiling code
4569 involving vectors implemented as general (not simple) vectors (VECTOR T),
4570 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4571 which dares to use the various sequence functions on non-simple
4572 vectors, takes less of a performance hit.
4573 * There is now a primitive type predicate VECTOR-T-P
4574 to test for the (VECTOR T) type, so that e.g.
4575 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4576 can now be compiled with some semblance of efficiency. (The old code
4577 turned the type declaration into a full call to %TYPEP at runtime!)
4578 * AREF on (VECTOR T) is still not fast, since it's still compiled
4579 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4580 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4581 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4582 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4583 without making full calls to SUBTYPEP at runtime.
4584 (Some analogous efficiency issues for non-simple vectors specialized to
4585 element types other than T, or for non-simple multidimensional arrays,
4586 have not been addressed. They could almost certainly be handled the
4587 same way if anyone is motivated to do so.)
4588 * The changes in array handling break binary compatibility, so
4589 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4590 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4591 instead of (VALUES T T).
4592 * By following the instructions that Dan Barlow posted to sbcl-devel
4593 on 2 July 2000, I was able to enable primitive dynamic object
4594 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4595 functionality is not implemented (since it calls ld to resolve
4596 library references automatically, requiring RUN-PROGRAM for its
4597 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4598 try to resolve library references) is now supported.
4599 * The system now flushes the standard output streams when it terminates,
4600 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4601 them at several other probably-convenient times, e.g. in each pass of
4602 the toplevel read-eval-print loop, and after evaluating a form given
4603 as an "--eval" command-line option. (These changes were motivated by a
4604 discussion of stream flushing issues on cmucl-imp in August 2000.)
4605 * The source transform for TYPEP of array types no longer assumes
4606 that an array whose element type is a not-yet-defined type
4607 is implemented as an array of T, but instead punts, so that the
4608 type will be interpreted at runtime.
4609 * There is now some support for cross-compiling in make.sh: each of
4610 the phases of make.sh has its own script. (This should be transparent
4611 to people doing ordinary, non-cross-compile builds.)
4612 * Since my laptop doesn't have hundreds of megabytes of memory like
4613 my desktop machine, I became more motivated to do some items on
4614 my to-do list in order to reduce the size of the system a little:
4615 ** Arrange for various needed-only-at-cold-init things to be
4616 uninterned after cold init. To support this, those things have
4617 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4618 symbols with such names are now uninterned after cold init).
4619 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4620 fasl files for cold load.
4621 ** Remove the old compiler structure pooling code (which used to
4622 be conditional on the target feature :SB-ALLOC) completely.
4623 ** Redo the representation of some data in cold init to be more compact.
4624 (I also looked into supporting byte compiled code at bootstrap time,
4625 which would probably reduce the size of the system a lot, but that
4626 looked too complicated, so I punted for now.)
4627 * The maximum signal nesting depth in the src/runtime/ support code has
4628 been reduced from 4096 to 256. (I don't know any reason for the very
4629 large old value. If the new smaller value turns out to break something,
4630 I'll probably just bump it back up.)
4631 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4633 * Many, many bugs reported by Peter Van Eynde have been added to
4634 the BUGS list; some have even been fixed.
4635 * While enabling dynamic object file loading, I tried to make the
4636 code easier to understand, renaming various functions and variables
4637 with less ambiguous names, and changing some function calling
4638 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4639 * While trying to figure out how to do the OpenBSD port, I tried to
4640 clean up some of the code in src/runtime/. In particular, I dropped
4641 support for non-POSIX signal handling, added various comments,
4642 tweaked the code to reduce the number of compilation warnings, and
4643 renamed some files to increase consistency.
4644 * To support the new automatic configuration functionality in make.sh,
4645 the source file target-features.lisp-expr has been replaced with the
4646 source file base-target-features.lisp-expr and the machine-generated
4647 file local-target-features.lisp-expr.
4648 * fixed a stupid quoting error in make.sh so that using CMU CL
4649 "lisp -batch" as cross-compilation host works again
4651 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4653 * DESCRIBE no longer tries to call itself recursively to describe
4654 bound/fbound values, so that it no longer fails on symbols which are
4655 bound to themselves (like keywords, T, and NIL).
4656 * DESCRIBE now works on generic functions.
4657 * The printer now prints less-screwed-up representations of closures
4658 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4659 * A private symbol is used instead of the :EMPTY keyword previously
4660 used to mark empty slots in hash tables. Thus
4661 (DEFVAR *HT* (MAKE-HASH-TABLE))
4662 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4663 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4664 now does what ANSI says that it should. (You can still get
4665 similar noncompliant behavior if bang on the hash table
4666 implementation with all the symbols you get back from
4667 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4668 This breaks binary compatibility, since tests for equality to
4669 :EMPTY are wired into things like the macroexpansion of
4670 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4672 * There's now a minimal placeholder implementation for CL:STEP,
4673 as required by ANSI.
4674 * An obscure bug in the interaction of the normal compiler, the byte
4675 compiler, inlining, and structure predicates has been patched
4676 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4677 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4679 * Missing ordinary arguments in a macro call are now detected even
4680 when the macro lambda list contains &KEY or &REST.
4681 * The debugger no longer complains about encountering the top of the
4682 stack when you type "FRAME 0" to explicitly instruct it to go to
4683 the top of the stack. And it now prints the frame you request even
4684 if it's the current frame (instead of saying "You are here.").
4685 * As specified by ANSI, the system now always prints keywords
4686 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4688 * The default initial SIZE of HASH-TABLEs is now smaller.
4689 * Type information from CLOS class dispatch is now propagated
4690 into DEFMETHOD bodies, so that e.g.
4691 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4693 is now basically equivalent to
4694 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4695 (DECLARE (TYPE SINGLE-FLOAT X))
4697 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4698 operation, without having to do run-time type dispatch.
4699 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4700 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4701 * Since I don't seem to be making big file reorganizations very often
4702 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4703 is overflowing my ability to conveniently back them up), I've finally
4704 checked the system into CVS. (The CVS repository is on my home system,
4705 not at SourceForge -- putting it on SourceForge might come later.)
4706 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4707 high-level GC-NOTIFY-FOO functions send their output. (There's
4708 still very little control of where low-level verbose GC functions
4709 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4710 less than it used to -- the GC-NOTIFY-FOO functions are now under
4711 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4712 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4713 in only one place in the source code, and propagates it automatically
4714 everywhere that it's needed. Thus e.g. when I bump the version from
4715 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4716 * The C source files now include boilerplate legalese and documentation
4717 at the head of each file (just as the Lisp source files already did).
4718 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4719 to his page will be replaced with a link to his new CLiki service.
4721 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4723 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4724 * The build process now looks for GNU make under the default name "gmake",
4725 instead of "make" as it used to. If GNU make is not available as "gmake"
4726 on your system, you can change this default behavior by setting the
4727 GNUMAKE environment variable.
4728 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4729 can build without error under CMU CL.
4731 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4733 * There is now a partial SBCL user manual (with some new text and some
4734 text cribbed from the CMU CL manual).
4735 * The beginnings of a profiler have been added (starting with the
4736 CMU CL profiler and simplifying and cleaning up). Eventually the
4737 main interface should be through the TRACE macro, but for now,
4738 it's still accessed through vaguely CMU-CL-style functions and macros
4739 exported from the package SB-PROFILE.
4740 * Some problems left over from porting CMU CL to the new
4741 cross-compilation bootstrap process have been cleaned up:
4742 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4743 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4744 part when getting rid of the compiler *BACKEND* stuff.)
4745 ** The value of *NULL-TYPE* was screwed up, because it was
4746 being initialized before the type system knew the final
4747 definition of the 'NULL type. This screwed up several key
4748 optimizations in the compiler, causing inefficiency in all sorts
4749 of places. (I found it because I wanted to understand why
4750 GET-INTERNAL-RUN-TIME was consing.)
4751 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4752 PROCLAIM FTYPE information. Unfortunately this broke binary
4753 compatibility again, since now the forms output by DEFGENERIC
4754 to refer to functions which didn't exist in 0.6.3.
4755 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4756 can use the new (as of 0.6.3) transform for SOME into MAP into
4758 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4759 values to (INTEGER 0 1000000), so that the time code will no longer
4760 occasionally get blown up by Linux returning 1000000 microseconds
4761 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4762 its output conform to the ANSI spec. (Alas, this makes its output
4763 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4764 * A full call to MAP NIL with a single sequence argument no longer conses.
4765 * fixes to problems pointed out by Martin Atzmueller:
4766 * The manual page no longer talks about multiprocessing as though
4767 it were currently supported.
4768 * The ILISP support patches have been removed from the distribution,
4769 because as of version 5.10.1, ILISP now supports SBCL without us
4770 having to maintain patches.
4771 * added a modified version of Raymond Toy's recent CMU CL patch for
4772 EQUALP comparison of HASH-TABLE
4774 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4776 * The system still can't cross-compile itself with
4777 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4778 entails), but at least it can compile more of itself that way
4779 than it used to be able to, and various buglets which were uncovered
4780 by trying to cross-compile itself that way have now been fixed.
4781 * This release breaks binary compatibility again. This time
4782 at least I've incremented the FASL file format version to 2, so that the
4783 problem can be detected reliably instead of just causing weird errors.
4784 * various new style warnings:
4785 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4786 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4787 ** using the lexical binding of a variable named in the *FOO* style
4788 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4789 as specified by ANSI.
4790 * *RANDOM-STATE* is no longer automatically initialized from
4791 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4792 default behavior of the system is to repeat its behavior every time
4793 it's run. If you'd like to change this behavior, you can always
4794 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4795 old convention there was no comparably easy way to get the system to
4796 repeat its behavior every time it was run.
4797 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4798 FTYPE declarations has been removed, in favor of their ANSI
4799 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4800 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4801 the types of their sequence arguments can be determined at compile time.
4802 This is done through a new open code expansion for MAP which eliminates
4803 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4804 argument types can be determined at compile time.
4805 * The optimizer now transforms COERCE into an identity operation when it
4806 can prove that the coerced object is already of the correct type. (This
4807 can be a win for machine generated code, including the output of other
4808 optimization transforms, such as the MAP transform above.)
4809 * Credit information has been moved from source file headers into CREDITS.
4810 * Source file headers have been made more standard.
4811 * The CASE macro now compiles without complaining even when it has
4814 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4816 * (Note that the way that the PCL macroexpansions were rewritten
4817 to accommodate the change in DEFGENERIC below breaks binary
4818 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4819 not run under sbcl-0.6.2. Once we get out of alpha releases,
4820 i.e. hit release 1.0.0, we'll probably try to maintain binary
4821 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4822 and sbcl-1.4.4. Until then, however, it might be fairly common
4823 for maintenance releases to break binary compatibility.)
4824 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4826 * The reporting of unhandled signals has been changed to print some
4827 explanatory text as well as the report form. (Previously only
4828 the report form was printed.)
4829 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4830 it defines, so that the compiler no longer issues undefined function
4831 warnings for compiled-but-not-yet-loaded generic functions.
4832 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4833 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4834 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4835 section of the ANSI spec are supported.
4836 * The "" nickname for the "KEYWORD" package has been removed.
4837 The reader still handles symbol tokens which begin with a package marker
4838 as keywords, but it doesn't expose its mechanism for doing so in the
4839 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4840 * The system now issues STYLE-WARNINGs for contradictory TYPE
4841 proclamations. (Warnings for contradictory FTYPE proclamations would
4842 be nice too, but those can't be done usefully unless the type system
4843 is made smarter about FUNCTION types.)
4844 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4845 systematized, so that "*target-*.lisp is supposed to exist only on the
4846 target and imply that there's a related file which exists on the
4847 host, and *host-*.lisp is supposed to exist only on the host and imply
4848 that there's a related file which exists on the target. This involves a
4849 lot of renaming. Hopefully the acute confusion caused by the renaming
4850 will be justified by the reduction in chronic confusion..
4851 ** runtime-type.lisp -> early-target-type.lisp
4852 ** target-type.lisp -> late-target-type.lisp
4853 ** early-host-format.lisp -> early-format.lisp
4854 ** late-host-format.lisp -> late-format.lisp
4855 ** host-error.lisp -> misc-error.lisp
4856 ** early-error.lisp -> early-target-error.lisp
4857 ** late-error.lisp -> late-target-error.lisp
4858 ** host-defboot.lisp -> early-defboot.lisp
4859 ** code/misc.lisp -> code/target-misc.lisp
4860 ** code/host-misc.lisp -> code/misc.lisp
4861 ** code/numbers.lisp -> code/target-numbers.lisp
4862 ** code/early-numbers.lisp -> numbers.lisp
4863 ** early-host-type.lisp -> early-type.lisp
4864 ** late-host-type.lisp -> late-type.lisp
4865 ** host-typep.lisp -> typep.lisp
4866 ** load.lisp -> target-load.lisp
4867 ** host-load.lisp -> load.lisp
4868 ** host-disassem.lisp -> disassem.lisp
4869 ** host-insts.lisp -> insts.lisp
4870 ** byte-comp.lisp -> target-byte-comp.lisp
4871 ** host-byte-comp.lisp -> byte-comp.lisp
4872 ** host-signal.lisp -> signal.lisp
4873 ** host-defstruct.lisp -> defstruct.lisp
4874 ** late-target-type.lisp -> deftypes-for-target.lisp
4875 Furthermore, several other previously target-only files foo.lisp (e.g.
4876 hash-table.lisp and random.lisp) have been split into a target-and-host
4877 foo.lisp file and a target-only target-foo.lisp file, with their key type
4878 definitions in the target-and-host part, so that the cross-compiler will
4879 know more about target types.
4880 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4881 gone away. In their place are various *BACKEND-FOO* variables
4882 corresponding to the slots of the old structure.
4883 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4884 into the target SBCL has been fixed.
4885 * The chill.lisp system for loading cold code into a running SBCL
4887 * Support for the CMU CL "scavenger hook" extension has been removed.
4888 (It was undocumented and unused in the CMU CL sources that SBCL was
4889 derived from, and stale in sbcl-0.6.1.)
4890 * Various errors in the cross-compiler type system were detected
4891 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4892 (enabling various consistency checks). Many of them were fixed,
4893 but some hard problems remain, so the compiler is back to
4894 running without *TYPE-SYSTEM-INITIALIZED* for now.
4895 * As part of the cross-compiler type system cleanup, I implemented
4896 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4897 * I have started adding UNCROSS calls throughout the type system
4898 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4899 on cross-compiler input files will be able to go away, and various
4901 * CONSTANTP now returns true for quoted forms (as explicitly required
4904 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4906 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4907 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4908 (MAKE-LIST -1). In the longer term, it ought to become true
4909 that declarations are assertions even at SAFETY 1. For now, it's not
4910 quite true even at SAFETY 3, but it's at least more nearly true..
4911 (Note that this change seems to increases the size of the system by
4912 O(5%) and to decrease the speed of the compiler by 20% or more.)
4913 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4914 for the problem of printing dozens of lines of distracting information
4915 about low-level system machinery as part of the top stack frame
4916 on entry to the debugger when an undefined function was called.
4917 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4918 is not reset to COMMON-LISP-USER.
4919 * Compilation of stuff related to dyncount.lisp has been made conditional
4920 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4921 smaller. The various dyncount-related symbols have been moved into
4922 a new "SB-DYNCOUNT" package.
4923 * tty-inspect.lisp has been renamed to inspect.lisp.
4924 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4925 feature has gone away. (When we eventually port to other flavors of
4926 libc and/or Unix, we'll try to make the differences between flavors
4927 invisible at the user level.)
4928 * Various other *FEATURES* tags, and/or their associated conditionals,
4929 have been removed if obsolescent, or given better documentation, or
4930 sometimes given more-mnemonic names.
4932 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4934 * tidied up "make.sh" script
4935 * tidied up system directory structure
4936 * better "clean.sh" behavior
4937 * added doc/FOR-CMUCL-DEVELOPERS
4938 * many many small tweaks to output format, e.g. removing possibly-confusing
4939 trailing #\. character in DESCRIBE-INSTANCE
4940 * (EQUALP #\A 'A) no longer signals an error.
4941 * new hashing code, including EQUALP hashing
4942 * tidied up Lisp initialization and toplevel
4943 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4944 * command line argument processing
4945 * added POSIX-GETENV function to deal with Unix-ish environment variables
4946 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4947 terminating SBCL on EOF
4948 * non-verbose GC by default
4949 * There is no more "sbcl" shell script; the sbcl file is now the C
4950 runtime executable (just like CMU CL).
4951 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4953 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4954 symbol and package information as Lisp native symbol and package objects
4955 instead of strings naming symbols and strings naming packages. This way,
4956 whenever packages are renamed (as in warm init), debug information is
4957 transformed along with everything else.
4958 * tweaked the optimization policy declarations which control the building
4959 of SBCL itself. Now, among other things, the system no longer saves
4960 source location debugging information. (This helps two problems at once
4961 by reducing SBCL size and by keeping SBCL from trying to look for its
4962 sources -- which may not exist -- when reporting errors.)
4963 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4964 debugging and testing purposes
4965 * cleaned up printing, making the printer call PRINT-OBJECT for
4966 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4967 methods, giving nearly-ANSI behavior
4968 * converted almost all special variables to use *FOO* naming convention
4969 * deleted PARSE-TIME functionality, since it can be done portably
4970 * moved some files out of cold init into warm init
4971 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4973 * regularized formatting of source files
4974 * added an install.sh script
4975 * fixed ridiculous memory usage of cross-compiler by making
4976 compiler/alloc.lisp not try to do pooling unless it can hook
4977 itself into the GC of the cross-compilation host. Now the system
4978 builds nicely on my old laptop.
4979 * added :SB-ALLOC in target-features.lisp-expr
4980 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4981 was not implemented)
4982 * re-did condition handling and note reporting in the compiler. Notes
4983 are no longer handled by signalling conditions. Style warnings
4984 and warnings are handled more correctly and reported in such a way
4985 that it's easy to find one or the other in your output (so that you
4986 can e.g. figure out which of many problems caused COMPILE-FILE to
4988 * changed the severity of several compiler warnings from full WARNING
4989 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4990 compiler note reporting so that it doesn't use the condition system
4991 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4992 COMPILE-FILE command)
4993 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4994 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4995 no longer supported, since their implementation was deeply intertwingled
4996 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4997 * removed bogus "support" for compiler macros named (SETF FOO), and
4998 removed the compiler macro for SETF INFO (but only after making a fool
4999 of myself on the cmucl-imp mailing list by posting a bogus patch for
5000 DEFINE-COMPILER-MACRO..)
5001 * Compiled files containing forms which have side effects on the Lisp
5002 reader (such as DEFPACKAGE forms) are now handled more correctly.
5003 (Compiler queuing of top level lambdas has been suppressed by setting
5004 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5005 * deleted various currently-unused source files, e.g. gengc.lisp. They
5006 may be added back at some point e.g. when porting to other architectures,
5007 but until they are it's distracting to distribute them and to try to
5009 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5010 there were so many of them they're just distractions, and UNCROSS is
5011 known to be able to handle the current sources
5012 * moved PROFILE functionality into TRACE, so that it will be clear
5013 how the wrapping and unwrapping of functions when you profile them
5014 interacts with the wrapping and unwrapping of functions when you
5015 trace them. (Actually, the functionality isn't there yet, but at least
5016 the interface specification is there. Hopefully, the functionality will
5017 arrive with some future maintenance release.)
5018 * removed host-oops.lisp
5019 * changed signature of QUIT function to allow UNIX-CODE argument
5020 * fixed READ-SEQUENCE bug
5021 * tweaked verbose GC output so that it looks more like the progress
5022 output that ANSI specifies for functions like LOAD
5023 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5024 * added <http://sbcl.sourceforge.com> to the banner information printed by