1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.26 relative to 1.0.25:
3 * incompatible change: the interruption (be it a function passed to
4 INTERRUPT-THREAD or a timer function) runs in an environment where
5 interrupts can be enabled. The interruption can use
6 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
7 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
8 potentially running out of stack. Keep in mind that in the absance
9 of WITHOUT-INTERRUPTS some potentially blocking operation such as
10 acquiring a lock can enable interrupts.
11 * incompatible change: GC-OFF and GC-ON are removed, they were
12 always unsafe. Use WITHOUT-GCING instead.
13 * new feature: runtime option --disable-ldb
14 * new feature: runtime option --lose-on-corruption to die at the
15 slightest hint of possibly non-recoverable errors: running out of
16 memory, stack, alien stack, binding stack, encountering a memory
17 fault, etc. In the absence of --lose-on-corruption a warning is
19 * improvement: generally more stable and reliable interrupt handling
20 * improvement: there is a per thread interruption queue,
21 interruptions are executed in order of arrival
22 * improvement: a repeating timer reschedules itself when the it has
23 finished, but expiration times are spaced equally. If an
24 expiration time is in the past it will trigger after a short grace
25 period that may give a chance to other things to run.
26 * optimization: slightly faster gc on multithreaded builds
27 * optimization: faster WITHOUT-GCING
28 * bug fix: when JOIN-THREAD signals an error, do it when not holding
29 important locks so that the debugger/handler doesn't produce
30 recursive errors or deadlock.
31 * bug fix: real-time signals are not used anymore, so no more
32 hanging when the system wide real-time signal queue gets full.
33 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
35 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
36 * bug fix: fix random memory faults related to interrupts on alpha
37 * bug fix: fix deadlocks related to starting threads
39 changes in sbcl-1.0.25 relative to 1.0.24:
40 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
41 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
42 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
43 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
44 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
45 better name and does not return values so stale on multiprocessor systems.
46 Also, HOLDING-MUTEX-P was added for about the only sane usage of
48 * improvement: unithread builds keep track of MUTEX-VALUE.
49 * improvement: reading from a TWO-WAY-STREAM does not touch the output
50 stream anymore making it thread safe to have a concurrent reader and
51 a writer, for instance, in a pipe.
52 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
53 arguments, making compiler-macros for SETF-functions able to inspect
54 their constant arguments.
55 * improvement: COMPILE-FILE reports times with millisecond accuracy
56 (thanks to Luis Oliveira)
57 * optimization: CHAR-CODE type derivation has been improved, making
58 TYPEP elimination on subtypes of CHARACTER work better. (reported
59 by Tobias Rittweiler, patch by Paul Khuong)
60 * bug fix: setting alien structure fields of type struct by value now
61 computes the right offset for the memory copy.
62 * bug fix: compilation problem involving inlined calls to aliens with
63 result type VOID. (reported by Ken Olum)
64 * bug fix: #235a; sequential inline expasion in different policies no
65 longer reuses the functional from the previous expansion site.
66 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
67 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
68 * bug fix: named ENUMs in multiply-referenced alien record types no longer
69 cause an implied type redefinition. Regression from 1.0.21.29.
70 * bug fix: sign-extension of small signed return values now works with C
71 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
72 * improvements to the Windows port:
73 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
74 Westfold, thanks to Rudi Schlatte)
76 changes in sbcl-1.0.24 relative to 1.0.23:
77 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
78 vector of a multidimensional SIMPLE-ARRAY.
79 * new feature: the system now signals a continuable error if standard
80 readtable modification is attempted. (thanks to Tobias Rittweiler)
81 * new feature: DIRECTORY has been extended with a non-standard keyword
82 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
83 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
84 has been robustified and documented better. (thanks to Robert Goldman)
85 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
86 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
87 * tradeoff: constant FORMAT control strings are now compiled unless
88 SPACE > SPEED (previously only when SPEED > SPACE.)
89 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
91 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
93 * bug fix: lexical type declarations are now correctly reported by
94 SB-CLTL2. (reported by Larry D'Anna)
95 * bug fix: STRING-TO-OCTETS did not handle :START properly when
96 using UTF-8 as external format. (thanks to Luis Oliveira)
97 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
98 are signalled correctly. (thanks to Stas Boukarev)
99 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
100 designator. (thanks to Tobias Rittweiler)
101 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
102 designator, and returns T instead of the function. (thanks to
104 * bug fix: direct superclasses of STANDARD-CLASS and
105 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
106 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
107 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
108 when no class with the named slot yet exists no longer causes a
109 compile-time style-warning.
110 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
111 in safe code. (reported by Didier Verna)
112 * bug fix: #430; nested structure constructors can stack allocate.
113 * bug fix: on some 64-bit platforms dynamic space size was truncated
114 to #xffff0000 bytes. (reported by Benjamin Lambert)
115 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
116 REPL unusable. (reported by Daniel Herring)
117 * bug fix: return values of READ-SEQUENCE did not take :START into
118 account on file streams, regressions since 1.0.12.22. (reported by
119 Thomas Russ, patch by Paul Khuong)
120 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
121 method specializer used to confuse permuation vector optimization.
122 * bug fix: system inserted bogus implicit type declarations for local
123 special variables in DEFMETHOD bodies.
124 * bug fix: #354; duplicated frames in backtraces due to
125 non-tail-call-optimized XEPs to functions with return type NIL
127 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
128 initializes structure object slots according to DEFSTRUCT initforms,
129 and DEFSTRUCT forms :INCLUDEind structure classes defined using
130 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
131 (reported by Bruno Haible and Stephen Wilson)
132 * bug fix: #395; fill-pointer output streams used now support
133 element-type BASE-CHAR as well.
134 * bug fix: compiler error when attempting to derive return value of
135 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
137 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
139 * bug fix: Mac OS X binaries should now be portable between Leopard
142 changes in sbcl-1.0.23 relative to 1.0.22:
143 * enhancement: when disassembling method functions, disassembly
144 for the associated fast function is also produced.
145 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
147 * optimization: printing with *PRINT-PRETTY* true is now more
148 efficient as long as the object being printed doesn't require
149 special handling by the pretty printer.
150 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
151 now interact correctly with type declarations.
152 * partial bug fix: PCL detects infinite recursion during wrapper
153 validation. (thanks to Attila Lendvai)
154 * bug fix: #426; nested function calls are inlined properly.
155 Previously if FOO was an inline function, in calls of the form
156 (FOO (FOO ...)) the outer call was not inlined.
157 * bug fix: long long arguments passed in registers to alien
158 functions on PowerPC Linux and NetBSD are now handled correctly
159 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
161 changes in sbcl-1.0.22 relative to 1.0.21:
162 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
163 for the shared object in the current directory, but passes the native
164 namestring of the designated pathname to the operation system's shared
165 object loading function as-it.
166 * minor incompatible change: --disable-debugger toplevel option now takes
167 effect before processing of initialization files and --eval or --load
169 * new feature: new commandline argument: --script, which supports
170 shebang lines. See documentation for details. (based on work by
172 * new feature: SAVE-LISP-AND-DIE can save current values of
173 --dynamic-space-size and --control-stack-size in the executable core,
174 causing it to skip normal runtime option processing. See documentation
175 for details. (thanks to Zach Beane)
176 * enhancement: inoccous calls to EVAL or generic functions dispatching
177 on subclasses of eg. STREAM no longer cause compiler notes to appear.
178 * enhancement: the system no longer resignals errors from --load and
179 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
180 associated with the original error to be lost. (thanks to Ariel
182 * enhancement: :DONT-SAVE keyword argument has been added to
183 LOAD-SHARED-OBJECT for controlling interaction with
184 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
185 the effects of an earlier LOAD-SHARED-OBJECT call.
186 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
187 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
188 provided. (reported by Cedric St-Jean)
189 * bug fix: circularity handling in the reader did not treat raw
190 structure slots correctly. (reported by Cedric St-Jean)
191 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
192 file descriptors when there were none.
193 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
194 was broken. (reporteed by Willem Broekema)
195 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
196 pathnames without a directory.
197 * bug fix: COMPILE-FILE did not warn about undefined variable
198 references at toplevel, and LOAD of the resulting fasl did
200 * bug fix: functions with non-required arguments used to end up with
201 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
202 * bug fix: redefining a function with non-required arguments didn't
203 update the system's knowledge about its call signature properly.
204 * bug fix: fixed #431; incompatible alien record type redefinitions
205 are detected and handled. (reported by Neil Haven)
206 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
207 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
209 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
210 after alien stack frames.
211 * bug fix: strings passed to mk{s,d}temp lacked null termination
213 changes in sbcl-1.0.21 relative to 1.0.20:
214 * new feature: the compiler is able to track the effective type of a
215 generic function across method addition and removal.
216 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
217 appropriately typed structure slots without locking.
218 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
219 information like those gathered by TIME using a programming-friendly
221 * new feature: TIME reports time taken even if the form performs a
222 non-local transfer of control.
223 * enhancement: reduced conservativism on GENCGC platforms: on
224 average 45% less pages pinned (measured from SBCL self build).
225 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
226 mutate constant symbols or violate declaimed type of the symbol.
227 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
228 sleeping on the semaphore in heavily contested semaphores.
229 * bug fix: semaphores and condition variables were not interrupt
231 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
232 owned by other threads anymore.
233 * bug fix: FIND on lists called KEY outside the specified
234 subsequence. (reported by budden)
235 * bug fix: LOG doesn't use single-float intermediate results when
236 given mixed integer and double-float arguments, leading to better
237 precision. (reported by Bob Felts)
238 * bug fix: LOG with base zero returned values of inconsistent type.
240 changes in sbcl-1.0.20 relative to 1.0.19:
241 * minor incompatible change: OPTIMIZE qualities
242 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
243 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
244 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
245 * documentation: some slot access efficiency guidelines have been
246 added to the user manual.
247 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
248 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
249 as ASSOC and MEMEBER.
250 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
251 to more efficient EQ-comparison versions more often.
252 * optimization: enhanced derivation of DOLIST iteration variable type
254 * optimization: constant folding of simple (LIST ...) forms as DOLIST
256 * optimization: runtime lookup of function definitions can be
257 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
258 * optimization: compiler is able to derive the return type of
259 (AREF (THE STRING X) Y) as being CHARACTER.
260 * optimization: CLRHASH on empty hash-tables no longer does pointless
261 work. (thanks to Alec Berryman)
262 * optimization: REPLACE deftransforms don't punt when :START1 or
264 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
265 no longer emits a code deletion note. (reported by Andrew
267 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
268 functions with an odd number of &OPTIONAL arguments, a &REST
269 argument, and one or more &KEY arguments at the call site.
270 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
271 arguments appeared at call sites as well.
272 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
273 READ-LINE &co can no longer read from them afterwards. (reported
275 * bug fix: fixed #427: unused local aliens no longer cause compiler
276 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
278 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
279 alien-stack leakage. (reported by Andy Hefner)
280 * bug fix: PROGV signals an error when an attempt to violate declared
281 type of a variable or bind a constant is made.
282 * bug fix: SET signals an error when an attempt to violate declared
283 type of a variable is made.
284 * bug fix: restart computation during the execution of a restart
285 test function no longer causes infinite recursion. (reported by
287 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
288 signals an error. (thanks to Pierre Mai)
289 * bug fix: EXPORT left symbol unexported in conflict situations.
290 (thanks to Michael Weber)
291 * bug fix: correctly handle name conflicts involving CL:NIL.
292 (thanks to Michael Weber)
293 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
294 conflicts arising from USEing package with conflicting symbols
295 correctly. (thanks to Michael Weber)
297 changes in sbcl-1.0.19 relative to 1.0.18:
298 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
299 warnings that go otherwise unhandled will be muffled if they are
300 of the type that's the value of this variable.
301 * optimization: stack allocation is slightly more efficient on x86
303 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
304 where a raw slot always is initialized using the initform whose
305 type is not know sufficiently well a compile-time are now compiled
306 correctly. (reported by John Morrison)
307 * bug fix: compiler no longer makes erronous assumptions in the
308 presence of non-foldable SATISFIES types.
309 * bug fix: stack analysis missed cleanups of dynamic-extent
310 arguments in non-let-converted calls to local functions.
311 * improvements to the Windows port:
312 ** adjusted address spaces for building on both Win32 and
313 Win64. (thanks for John Connors)
314 * fixed some bugs revealed by Paul Dietz' test suite:
315 ** interval arithmetic during type derivation used inexact integer
316 to single-float coercions.
317 ** arithmetic operations involving large integers and single
318 floats give the same results in compiled and interpreted code.
319 ** deriving the result type of COERCE no longer signals an error
320 if the derived type of the second argument is a MEMBER type
321 containing invalid type specifiers.
322 ** ADJOIN with constant NIL as second argument works correctly.
323 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
325 changes in sbcl-1.0.18 relative to 1.0.17:
326 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
327 profiles only the current thread.
328 * minor incompatible change: changes to SYMBOL-VALUE of constants
329 defined with DEFCONSTANT now signal an error.
330 * enhancement: SB-SPROF now has support for wallclock profiling,
331 and is also able to profile specific threads. REPORT output
332 has also additional sorting options.
333 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
335 * optimization: structure allocation has been improved
336 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
337 ** out of line constructors are ~10% faster.
338 ** inline constructors are ~15% faster.
339 ** inline constructors are capable of dynamic extent allocation
340 (generally on x86 and x86-64, in some cases on other platforms
342 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
344 * optimization: file compiler is now able to coalesce non-circular
345 lists, non-base strings, and bit-vectors. Additionally, constants
346 are never referenced through SYMBOL-VALUE at runtime.
347 * optimization: code defining methods on PRINT-OBJECT (and other
348 generic functions in the COMMON-LISP package) now loads faster.
349 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
351 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
352 fasl is now deleted. (reported by Attila Lendvai)
353 * bug fix: READ-LINE always returned NIL for the last line in files.
354 (reported by Yoshinori Tahara)
355 * bug fix: more accurate disassembly annotations of foreign function
356 calls. (thanks to Andy Hefner)
357 * bug fix: trimming non-simple strings and non-string string
358 designators when the there is nothing to trim works properly.
359 (thanks to James Knight)
360 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
361 (thanks to Travis Cross)
362 * fixed some bugs revealed by Paul Dietz' test suite:
363 ** NIL is a valid function name (regression at 1.0.13.38)
364 ** FILL on lists was missing its return value (regression at 1.0.12.27)
365 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
366 fill pointers properly (regression at 1.0.12.23)
367 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
368 displacement indices properly (regression at 1.0.12.23)
370 changes in sbcl-1.0.17 relative to 1.0.16:
371 * temporary regression: user code can no longer allocate closure
372 variable storage on stack, due to bug 419 without explicitly
373 requesting it. Please consult sbcl-devel for advice if you need to
374 use this feature in the meanwhile.
375 * new feature: runtime argument --control-stack-size can be used to
376 adjust thread default control stack size.
377 * enhancement: improved TIME output
378 ** all times are reported using the measured accuracy (milliseconds
379 for real and GC times, microseconds for everything else.)
380 ** processor cycle counts on x86 and x86-64.
381 ** interpreted forms are counted for both evaluator modes.
382 ** number of lambdas converted by the compiler is reported.
383 ** CPU percentage report (computed from real and total run time.)
384 ** more comprehensive run time reporting, using a condenced format
385 ** interperted form, lambda, and page fault counts are omitted
387 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
389 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
390 * optimization: two argument forms of LAST are upto ~10% faster
391 in normal SPEED policies.
392 * optimization: NCONC no longer needs to heap cons its &REST list
393 in normal SPEED policies.
394 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
396 * bug fix: UNION and NUNION work with :TEST-NOT once more,
397 regression since 1.0.9.1. (thanks to Eric Marsden)
398 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
399 since 1.0.15.36. (thanks to Paul Khuong)
400 * bug fix: LAST when always returned the whole list when given a bignum
401 as the second argument.
402 * bug fix: dynamic extent allocation of nested lists and vectors
403 could leak to otherwise accessible parts.
404 * bug fix: invalid optimization of heap-allocated alien variable
406 * bug fix: fasl header checking is less vulnerable to different
407 platform word lengths.
408 * bug fix: more correct assembler syntax for GNU binutils
409 2.18.50.0.4 support. (thanks to Marijn Schouten)
410 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
412 * bug fix: the fopcompiler can handle LOCALLY forms (with no
413 declarations) successfully. (reported by Attila Lendvai)
415 changes in sbcl-1.0.16 relative to 1.0.15:
416 * minor incompatible change: revert the changes to sb-posix's error
417 signaling added in 1.0.14.
418 * minor incompatible change: change PROBE-FILE back to returning
419 NIL whenever we can't get a truename, as was the case before 1.0.14.
420 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
421 inherits from ERROR instead of just CONDITION.
422 * new feature: SB-INTROSPECT can provide source locations for instances
423 as well. (thanks to Tobias Rittweiler)
424 * optimization: binding special variables now generates smaller code
425 on threaded platforms.
426 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
427 and cases where no :TEST is given but the compiler can infer that
428 the element to search is of type (OR FIXNUM (NOT NUMBER)).
429 * optimization: better LOGNOT on fixnums.
430 * optimization: modular arithmetic for a particular requested width
431 is implemented using a tagged representation unless a better
432 representation is available.
433 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
434 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
435 for wellformedness and returns a specialized vector. (reported by
436 Francois-Rene Rideau)
437 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
438 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
439 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
440 unscheduling timer at the same time as another timer fires.
441 * bug fix: don't reschedule timers for dead threads.
442 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
443 * bug fix: copying output from RUN-PROGRAM to a stream signalled
444 bogus errors if select() was interrupted.
445 * enhancement: add support for fcntl's struct flock to SB-POSIX.
447 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
448 * enhancement: cleaner backtraces for interactive interrupts, as
449 well as other cases where the interesting frames used to be
450 obscured by interrupt handling frames.
451 * enhancement: untracing a whole package using (UNTRACE "FOO") is
452 now supported, and tracing a whole package using (TRACE "FOO") now
453 traces SETF-functions as well.
454 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
455 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
456 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
457 * unreadably printed representation of hash-tables now includes
459 * bug fix: partially fixed #188: type propagation from assignments
460 is now more efficient.
461 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
462 'DOUBLE-FLOAT) are not flushable.
463 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
464 full address of the object, and none of the tag bits.
465 * bug fix: readably printing hash-tables now respects other printer
466 control variables. (reported by Cedric St-Jean)
467 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
468 keyword with MAKE-HASH-TABLE.
469 * bug fix: export SB-POSIX:MKSTEMP.
470 * bug fix: SORT was not interrupt safe.
471 * bug fix: XREF accounts for the last node of each basic-block as
473 * bug fix: MAKE-INSTANCE optimizations interacted badly with
474 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
475 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
476 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
477 create obsolete instances in the case of redefinition or
478 obsoletion of a superclass. (thanks to Andy Hefner)
479 * bug fix: Support for the Alpha architecture has been revived; it had
480 suffered somewhat from lack of maintenance since sbcl-1.0.
481 * improvements to the Windows port:
482 ** The system detects the codepage to use at startup, instead of
483 using the value from the saved core. (thanks to Kei Suzuki)
485 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
486 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
487 (see documentation for details.)
488 * revived support for OpenBSD (contributed by Josh Elsasser)
489 * partially fixed bug #108: ROOM no longer suffers from occasional
490 (AVER (SAP= CURRENT END)) failures.
491 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
492 bodies no longer cause a WARNING to be signalled. (reported by
494 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
495 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
496 the bug in TRUNCATE.) (reported by Michael Weber)
497 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
498 no samples. (reported by Andy Hefner)
499 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
500 no longer appear as (NIL ...) frames in backtraces.
501 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
502 is now actually exported from SB-EXT as documented. (reported by
504 * bug fix: sb-aclrepl now correctly understands how to inspect
505 single-floats on 64-bit platforms where single-floats are not boxed.
506 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
507 yet been finalized. (reported by Levente Meszaros)
508 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
509 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
510 SBCL-specific optimize qualities.
512 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
513 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
514 an executable in the search path, and does so in the child
515 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
516 been removed; it can be found in the CVS history, for somebody who
517 needs that search behavior (see the manual).
518 * minor incompatible change: compiler policy re. weakening type
519 checks has changed: now type checks are weakened only if SAFETY < 2
521 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
522 unparsing of directory pathnames as files. Analogously,
523 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
524 filename to parse into a directory pathname.
525 * enhancement: implicit generic function creation now signals a
526 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
527 users can bind handlers for and muffle around calls to LOAD.
528 * enhancement: RUN-PROGRAM allows unicode arguments and environments
529 to be used (using the default stream external format), and allows
530 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
531 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
532 strings and vectors whose element-type or simplicity is not fully
533 known at compile-time.
534 * optimization: STRING-TRIM and related functions no longer allocate
535 a new string when no trimming needs to be performed. These functions
536 are also faster than before when the input string has been declared
538 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
539 * optimization: READ-LINE is significantly faster for files containing
541 * optimization: non-open coded uses of character comparison operators
542 (e.g. char=) no longer cons when called with more than one parameter
543 on platforms supporting dynamic-extent allocation.
544 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
545 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
546 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
548 * bug fix: some sequence functions elided bounds checking when
550 * bug fix: too liberal weakening of union-type checks when SPEED >
552 * bug fix: more bogus fixnum declarations in ROOM implementation
555 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
556 * new feature: MAKE-HASH-TABLE now experimentally accepts a
557 :SYNCHRONIZED argument, which makes the hash-table safe for
558 concurrent accesses (but not iteration.) See also:
559 SB-EXT:WITH-LOCKED-HASH-TABLE, and
560 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
561 * optimization: CONCATENATE on strings is an order of magnitude faster
562 in code compiled with (> SPEED SPACE).
563 * optimization: SUBSEQ is ~50% faster on lists.
564 * bug fix: bug 417 fixed -- source location reporting is now more robust.
565 * bug fix: SUBSEQ on a list will now correctly signal an error if if
566 END is smaller then START.
567 * bug fix: SB-PROFILE will no longer report extra consing for nested
568 calls to profiled functions.
569 * bug fix: ROOM implementation had bogus fixnum declarations which
570 could cause type-errors when calling ROOM on large images.
571 * bug fix: if file compilation is aborted, the partial fasl is now
572 deleted, and COMPILE-FILE returns NIL as the primary value.
573 * bug fix: number of thread safety issues relating to SBCL's internal
574 hash-table usage have been fixed.
575 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
576 be returned from its body when the values were being returned
577 using unknown-values return convection and the W-P-O was wrapped
578 inside an UNWIND-PROTECT.
579 * bug fix: sb-posix should now compile again under Windows, enabling
582 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
583 * incompatible change: hash-table accessor functions are no longer
584 automatically protected by locks. Concurrent accesses on the same hash-table
585 from multiple threads can give inconsistent results or even corrupt the
586 hash-table completely. Multi-threaded applications should do their own
587 locking at the correct granularity. In the current implementation it is
588 still safe to have multiple readers access the same table, but it's not
589 guaranteed that this property will be maintained in future releases.
590 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
591 and will signal an error at runtime.
592 * enhancement: SB-THREAD package now exports a semaphore interface.
593 * enhancement: CONS can now stack-allocate on x86 and
594 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
596 * enhancement: nested lists can now be stack allocated on
597 platforms providing stack allocation support.
598 * enhancement: dynamic-extent support has been extended to support
599 cases where there are multiple possible sources for the stack
601 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
602 if the mutex is uncontested on Linux.
603 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
604 as specified by the CLHS. (thanks to Tobias Rittweiler)
605 * bug fix: NaN comparison now works on x86-64.
606 * bug fix: CLOSE :ABORT T on a stream with pending output now
608 * bug fix: instances of non-standard metaclasses using standard
609 instance structure protocol sometimes missed the slot type checks
611 * bug fix: known functions can be inlined in high-debug code.
613 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
614 * minor incompatible change: the MSI installer on Windows no longer
615 associates .lisp and .fasl files with the installed SBCL.
616 * minor incompatible change: :UNIX is no longer present in *FEATURES*
617 on Windows. (thanks to Luis Oliviera)
618 * new feature: SB-CLTL2 contrib module now implements
619 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
620 * optimization: scavenging weak pointers is now more efficient,
621 requiring O(1) instead of O(N) per weak pointer to identify
622 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
623 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
624 method bodies using constant slot-names when the first argument is
625 a specializer parameter for the method.
626 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
627 names, when the class of the instance is a direct instance
628 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
629 as slow as the constant slot-name case.)
630 * optimization: member type construction is now O(N) instead
632 * optimization: UNION and NUNION are now O(N+M) for large
633 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
635 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
636 now more readable in environments like Slime which display it.
637 (thanks to Tobias C. Rittweiler)
638 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
639 was able to infer the correct argument type for the object on which
640 the CAS operation was being performed.
641 * bug fix: copy propagation interfered with parallel assignment
642 semantics in local calls. (reported by Paul Khuong)
643 * bug fix: the signed modular fixnum shift compiled to wrong code on
644 x86 and x86-64. (spotted by a slight modification to some of
647 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
648 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
649 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
650 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
652 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
653 and generic function now print the object identity for anonymous
654 instances. (thanks to Attila Lendvai)
655 * enhancement: as an extension to MOP, SBCL now supports SETF of
656 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
657 (thanks to Attila Lendvai)
658 * enhancement: sb-cover has an alternate annotation mode which puts
659 the form annotations at the car of the form, instead of annotating
660 it completely. The benefit of this mode is that it shows better
661 which forms were instrumented by the compiler.
662 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
663 by printer control variables. (reported by Dan Corkill)
664 * bug fix: system leaked memory when delayed output was performed by
665 the OS in smaller chunks then expected. (thanks to David Smith)
666 * bug fix: system leaked memory when file streams were not closed
668 * bug fix: large objects written to slow streams that were modified
669 after the write could end up with the modified state written to
670 the underlying file descriptor.
671 * bug fix: multiple threads operating in parallel on the same stream
672 could cause buffer-overflows.
673 * bug fix: source location information is stored correctly
674 (broken since 1.0.6). This bug would generally show up as the
675 Slime debugger highlighting the wrong form when the sldb-show-source
677 * bug fix: Branch forms are again annotated as branches in the sb-cover
679 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
680 on x86-64. (reported by Gregory Vanuxem)
681 * bug fix: EQUALP could return wrong results for structures with raw
682 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
683 word). (reported by Vjacheslav Fyodorov)
684 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
687 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
688 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
689 atomic compare-and-swap operations on threaded platforms.
690 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
691 allows assigning a global minimum value to optimization qualities
692 (overriding proclamations and declarations).
693 * enhancement: closed over variables can be stack-allocated on x86
695 * performance bug fix: GETHASH and (SETF GETHASH) are once again
697 * optimization: slot definition lookup is now O(1). This speeds up
698 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
699 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
700 * optimization: ASSOC and MEMBER can now be open-coded for all
701 combinations of keyword arguments when second argument is constant
702 and SPEED >= SPACE. In other cases a specialized version is
704 * bug fix: using obsoleted structure instances with TYPEP and
705 generic functions now signals a sensible error.
706 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
707 (reported by Kristoffer Kvello)
708 * bug fix: backtrace construction is now more careful when making
709 lisp-objects from pointers on the stack, to avoid creating bogus
710 objects that can be seen by the GC.
711 * bug fix: defaulting of values in contexts expecting more than 7
712 variables now works on x86-64. (reported by Christopher Laux)
713 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
715 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
716 as the property-list of a symbol.
717 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
718 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
719 situations requested, are once again file-compileable. (reported
722 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
723 * MOP improvement: support for user-defined subclasses of
724 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
725 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
726 the expansion of DEFMETHOD, is responsible for generating a form
727 which creates a list of specializers when evaluated. Additional
728 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
729 debugging and introspective support.
730 * minor incompatible change: the (unsupported) spinlock interface
731 has changed: free spinlock now has the value NIL, and a held spinlock
732 has the owning thread as its value.
733 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
734 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
736 * enhancement: name of a socket-stream is now "a socket" instead of
738 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
739 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
740 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
741 for generic functions. (Thanks to Tobias C. Rittweiler)
742 * optimization: bignum printing speed has been improved by 20-40%
743 (depending on the bignum size.)
744 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
746 * bug fix: the cache used by the CLOS to store precomputed effective
747 methods, slot offsets, and constant return values is now thread and
749 * bug fix: generic function dispatch function updating is now thread
750 and interrupt safe (in the sense that the known issues have been
752 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
753 * bug fix: interning EQL-specializers is now thread and interrupt safe.
754 * bug fix: asdf systems with dependencies to the SB-POSIX or
755 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
756 * bug fix: interrupt safety of applicable method computation has been
759 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
760 * new contrib: sb-cover, an experimental code coverage tool, is included
762 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
763 significantly faster.
764 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
765 produce more efficient code on x86-64 if the compiler can determine
766 that (+ INDEX <constant>) does not require a bounds check and FOO
767 has an element type at least 8 bits wide.
768 * enhancement: a new, experimental synchronous timeout facility is
769 provided. Refer to SB-SYS:WITH-DEADLINE for details.
770 * enhancement: when a symbol name conflict error arises, the
771 conflicting symbols are always printed with a package prefix.
772 (thanks to Kevin Reid)
773 * enhancement: stepping is now once again supported on the SPARC and
774 MIPS platforms. (It is also now more likely to work on CheneyGC
776 * enhancement: sb-sprof can now also track and report accurate call
778 * bug fixes: the treatment of non-standard subclasses of
779 SB-MOP:SPECIALIZER is more correct.
780 * incompatible change: PURIFY no longer copies the data from the
781 dynamic space into the static and read-only spaces on platforms
782 that use the generational garbage collector
783 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
785 * bug fix: GC race condition occasionally resulting in crashes with
786 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
788 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
790 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
791 a STYLE-WARNING to be signalled (regression from 1.0.4.)
792 * bug fix: an asynchronous interrupt could previously leave the
793 system running with GC inhibited.
794 * bug fix: a DECLARE form evaluated at top-level now causes an error
795 rather than silently (or verbosely) returning NIL.
796 * bug fix: trying to dissassemble functions compiled at high DEBUG could
797 result in a error being signalled due to source form lookup errors.
798 (reported by Peter Graves)
800 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
801 * incompatible change: removed writer methods for host-ent-name,
802 host-ent-addresses -- changing the values did not update the DNS
804 * minor incompatible change: changed experimental JOIN-THREAD interface
805 * documentation: the manual now lists reader and writer methods
806 in class slot documentation sections. (thanks to Richard M Kreuter)
807 * documentation: unwinding from asyncronous events has been
808 documented as unsafe.
809 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
810 in multithreaded application code.
811 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
812 platforms. (thanks to James Anderson for the optimization hint)
813 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
815 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
816 variants no longer cons.
817 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
818 their NOT- variants no longer cons.
819 * optimization: EQUAL hash tables no longer use SXHASH for objects
820 of all data types, but instead use an EQL hash for types for which
821 EQUAL is the same as EQL.
822 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
823 are significantly faster.
824 * optimization: new STRING-OUTPUT-STREAM implementation is much
825 faster for large outputs and conses 30% less on average.
826 * enhancement: XREF information is now collected for references made
827 to global variables using SYMBOL-VALUE and a constant argument.
828 * enhancement: SIGINT now causes a specific condition
829 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
830 * bug fix: FILE-POSITION used to signal an error in some cases where
831 ANSI requires it to return NIL.
832 * bug fix: ADJUST-ARRAY is now interrupt-safe.
833 * bug fix: adding and removing fd-handlers is now interrupt-safe.
834 * bug fix: inlined calls to C now ensure 16byte stack alignment on
836 * bug fix: bad type declaration in the CLOS implementation has
837 been fixed. (reported by James Anderson)
838 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
839 (thanks to Lutz Euler)
840 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
841 required by the CLHS. (reported by Samium Gromoff)
842 * bug fix: dead unbound variable references now signal an error.
843 (reported by Marco Monteiro)
844 * bug fix: / with an unused value was being deleted in safe code.
845 (thanks to Marco Monteiro and Kevin Reid)
846 * bug fix: number of characters that can be written onto a single
847 line in a file is unlimited.
848 * bug fix: some GC deadlocks caused by asynchronous interrupts have
849 been fixed by inhibiting interrupts for when GC is disabled.
850 * bug fix: some interrupt safety issues with GETHASH, (SETF
851 GETHASH), CLRHASH and REMHASH have been fixed.
852 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
853 specifier no longer causes infinite recursion.
854 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
855 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
856 * bug fix: an &environment argument with the correct variable information
857 is passed to macros that are expanded during byte compilation.
858 (reported by Samium Gromoff)
859 * bug fix: a logic error was causing the hash function for bignums to
860 have excessive amounts of collisions. (reported by Faré Rideau)
861 * bug fix: modifying the contents of an array could change the return
862 value of SXHASH on that array, which is only allowed for strings
863 and bit vectors. (bug introduced in 0.9.16)
864 * improvement: the x86-64/darwin port now passes all tests (except
865 for the debugger tests) but should still be considered
866 experimental until this is fixed.
867 * improvement: a style-warning is signaled for CASE (etc) clauses with
868 duplicate keys. (thanks to Kevin Reid)
869 * improvement: macos/x86 and macos/x86-64 now use mach exception
870 handlers for dealing with illegal instructions (for trapping and
871 error handling) and memory protection violations (for GC).
873 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
874 * new platform: experimental support for x86-64/darwin (MacOS).
875 * incompatible change: the thread-safe (on most platforms) getaddrinfo
876 and getnameinfo sockets functions are used instead of gethostbyaddr
877 and gethostbyname, on platforms where the newer functions are available.
878 As a result, the ALIASES field of HOST-ENT will always be NIL on these
880 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
881 don't print the startup banner, but behave as if --noinform was passed
882 as a command line argument. (thanks to Kevin Reid)
883 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
884 * optimization: code using alien values with undeclared types is much faster.
885 * optimization: the compiler is now able to open code SEARCH in more cases.
886 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
887 * bug fix: using standardized COMMON-LISP special variables as loop
888 variables no longer signals bogus package lock violations. (reported
890 * bug fix: declaring local loop variables to be of a range-limited type
891 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
892 (reported by Andras Simon)
893 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
894 bugs remain on x86-64.)
895 * bug fix: the #= and ## reader macros now interact reasonably with
896 funcallable instances.
897 * bug fix: type-checks for function arguments were compiled using the
898 compiler policy settings of the wrong lexical environment (in 1.0.2
900 * bug fix: SHADOW accepts characters as string designators, as required
901 by the spec (thanks to Eric Marsden)
902 * bug fix: fixed GC safety issues when foreign functions are called with
903 non-base strings as arguments
904 * bug fix: more consistent error output for fatal-compiler-warnings, like
906 * bug fix: functions with proper names were showing up as NIL in
907 backtraces (reported by Edi Weitz, regression in 1.0.2)
909 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
910 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
911 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
912 produce more efficient code on the x86 if the compiler can determine
913 that (+ INDEX <constant>) does not require a bounds check and FOO
914 has an element type at least 8 bits wide.
915 * bug fix: references to undefined variables are handled the same way
916 in toplevel forms as in the normal compiler
917 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
919 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
920 (thanks to Jon Buller)
921 * improvement: faster compilation times for complex functions
922 * improvement: added readlink support to SB-POSIX (thanks to Richard
925 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
926 * improvement: experimental support for mach exception handling on
927 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
929 * improvement: support for GBK external format.
930 (thanks to Chun Tian (binghe))
931 * improvement: the debugger now displays variables that have been closed
932 over, in code compiled with (DEBUG 2) or higher
933 * improvement: support for executable cores on NetBSD (thanks to
935 * new feature: added a RESTART-FRAME debugger command
936 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
937 be used to provide an implementation for FILE-POSITION on Gray streams
938 (thanks to Eric Marsden)
939 * new feature: add syslog, openlog and closelog support to SB-POSIX
940 (thanks to Richard Kreuter)
941 * optimization: the function call overhead in code compiled with
942 a high DEBUG optimization setting is significantly
943 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
944 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
945 (thanks to Tony Martinez)
946 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
947 evaluated once (reported by Kevin Reid)
948 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
949 works again (thanks to Kilian Sprotte)
950 * bug fix: an error is signaled for tagbodies with duplicate tags
951 (thanks to Stephen Wilson)
952 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
953 * bug fix: Win32 port can now handle foreign code unwinding Lisp
954 stack frames from alien callbacks.
955 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
956 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
957 65k pages (thanks to David Woodhouse)
958 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
960 changes in sbcl-1.0.1 relative to sbcl-1.0:
961 * new platform: FreeBSD/x86-64, including support for threading.
962 * new feature: the compiler stores cross-referencing information
963 about function calls (who-calls), macroexpansion (who-macroexpands)
964 and special variables (who-binds, who-sets, who-references) for code
965 compiled with (< SPACE 3). This information is available through the
966 sb-introspect contrib.
967 * new feature: users may subclass SEQUENCE, and have instances of
968 these classes interoperate with standard Common Lisp functions if
969 a number of methods are defined. (This feature is experimental
970 and the interface subject to change based on feedback from SBCL
971 users and the general community)
972 * improvement: sb-sprof traces call stacks to an arbitrary depth on
973 x86/x86-64, rather than the previous fixed depth of 8
974 * improvement: another pthread back-end of mutex "pthread-futex".
975 * bug fix: non-ascii command-line arguments are processed correctly
976 (thanks to Yaroslav Kavenchuk)
977 * bug fix: non-required arguments were not passed correctly when a method
978 defined using DEFMETHOD was called from a mop-generated method using
979 CALL-NEXT-METHOD (reported by Pascal Costanza)
980 * bug fix: recursion is now permitted in accessors through
981 SLOT-UNBOUND. (reported by Pascal Costanza)
982 * bug fix: an error was signaled at startup if the HOME environment
983 variable was defined, but had an empty value (reported by Peter Van Eynde)
984 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
985 signal a PROGRAM-ERROR, not a BUG.
986 * bug fix: SB-POSIX:READDIR works when built with large file support.
987 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
989 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
990 for better automatic indentation support. (thanks to Matt Pillsbury)
991 * optimization: loading generic functions no longer takes O(n^2) time,
992 proportional to the amount of methods in the generic function
993 (reported by Todd Sabin and Jeremy Brown)
994 * optimization: the FIND and POSITION family of sequence functions
995 are significantly faster on arrays whose element types have been
997 * improvements to the Windows port:
998 ** Intermittent heap corruption problems have been fixed. (thanks
999 to Alastair Bridgewater)
1000 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1002 ** Lisp is able to unwind foreign exception frames from alien
1003 callbacks. (thanks to Alastair Bridgewater)
1005 changes in sbcl-1.0 relative to sbcl-0.9.18:
1006 * improvement: experimental support for threading on FreeBSD/x86.
1007 (thanks to NIIMI Satoshi)
1008 * improvement: runtime option --dynamic-space-size can be used
1009 to set the size of the dynamic space reserved on startup.
1010 * improvement: floating point modes in effect are now saved in
1011 core, and restored on startup.
1012 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1013 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1014 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1015 threads are not running after *SAVE-HOOKS* have run.
1016 * improvement: writes to CLOS instance slots are type-checked in code
1017 compiled with (SAFETY 3)
1018 * improvement: floating-point exception handling on FreeBSD (thanks to
1020 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1021 (thanks to Zach Beane)
1022 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1024 * improvement: added support for the Shift-JIS external format.
1025 (contributed by NIIMI Satoshi)
1026 * improvement: callbacks are supported on Linux/PPC. (thanks to
1028 * bug fix: compiler bug triggered by a (non-standard) VALUES
1029 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1030 * bug fix: file compiler no longer confuses validated and already
1031 dumped structurres. (reported by Kaersten Poeck)
1032 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1033 fill-pointer signals a type-error as required. (thanks to
1035 * bug fix: disassemly of funcallable instances works.
1036 * bug fix: single stepping on PPC.
1037 * bug fix: fix thread-safety problems in the type system (generally
1038 manifesting as nonsensical errors like "STRING is a bad type specifier
1039 for sequences" or "The value 1 is not of type FIXNUM")
1040 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1041 (reported by Josip Gracin)
1042 * bug fix: an error is signaled for attempts to displace arrays with
1043 incompatible element types (thanks to Mario Mommer)
1044 * bug fix: more correct handling of wide characters in debug info
1045 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1046 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1047 and don't cause extra consing
1048 * optimization: MAP and MAP-INTO are significantly faster on vectors
1049 whose elements types have been declared.
1050 * Improvements to SB-SPROF:
1051 ** Support for allocation profiling
1052 ** Reduced profiling overhead, especially for long profiling runs
1053 * Improvements to the Windows port:
1054 ** floating point exceptions are now reported correctly.
1055 ** stack exhaustion detection works partially.
1056 ** more accurate GET-INTERNAL-REAL-TIME.
1057 ** better RUN-PROGRAM behaviour in case of errors in the child
1059 ** PROBE-FILE now simplifies pathnames correctly.
1060 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1061 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1062 1st 1970 (although time timezone data will be unreliable).
1063 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1065 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1066 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1067 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1069 * bug fix: two potential GC deadlocks affecting threaded builds.
1070 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1071 returns T (reported by Anton Kazennikov)
1072 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1073 with non-variable places
1074 * bug fix: remove a race condition in the setting of
1075 funcallable-instance functions, this should make threaded CLOS
1076 code more stable against memory faults.
1077 * bug fix: corruption of specials when unbinding is interrupted by an
1078 asynchronous unwind (reported by Hannu Koivisto)
1079 * improvement: the debugger will now also display local variables that
1080 are only used once, for code compiled with a DEBUG optimization quality
1083 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1084 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1085 * incompatible change: External-format support for FFI calls. The
1086 SB-ALIEN:C-STRING no longer implies an ASCII
1087 external-format. Instead the string is subject to external-format
1088 conversion. Additionally return values of type SB-ALIEN:C-STRING
1089 are by default of type (SIMPLE-ARRAY CHARACTER), not
1090 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1091 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1092 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1093 * incompatible change: SB-EXT package no longer contains the
1094 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1095 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1097 * incompatible change: the single-stepper is no longer available
1098 on Alpha, Mips and Sparc platforms.
1099 * minor incompatible change: the direct superclasses of
1100 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1101 not (STANDARD-OBJECT FUNCTION). This makes the
1102 class-precedence-lists of GENERIC-FUNCTION and
1103 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1105 * minor incompatible change: the default stream external format on
1106 non-unicode SBCL is no longer detected from the locale, but is always
1108 * new feature: Add a version of evaluator that uses an interpreter instead
1109 of the compiler. EVAL still uses the compiler by default, to switch it
1110 to use the interpreter, set the value of the variable
1111 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1112 * minor incompatible change: the single-stepper REPL has been merged
1113 with the normal debugger (see the "Stepping" heading of the debugger help
1114 for more details). The debugger command STEP will no longer switch
1115 to the single-stepper REPL.
1116 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1117 for a type now works.
1118 * bug fix: loading of default sysinit file works. (thanks to Leonid
1120 * bug fix: better detection of circularities in the file-compiler.
1121 (reported by Marco Monteiro)
1122 * bug fix: the CL pathname functions now work with files that have
1123 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1124 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1125 systems with Unix98 pty semantics.
1126 * bug fix: ASDF-INSTALL will now work with bsd tar.
1127 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1129 * bug fix: timers expiring in dead threads no longer cause a
1130 type-error (reported by Paul "Nonny Mouse").
1131 * bug fix: thanks to more lightweight single-stepper instrumentation,
1132 code compiled with (DEBUG 3) will compile and execute significantly faster,
1133 and will have more accurate type-inferencing than before
1134 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1135 whose bindings are modified
1136 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1137 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1138 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1139 CL:SOFTWARE-VERSION with proper version
1141 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1142 * feature: implemented the READER-METHOD-CLASS and
1143 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1144 as specified by AMOP.
1145 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1147 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1148 (thanks to Lutz Euler)
1149 * optimization: hashing of general arrays and vectors has been
1150 improved. (reported by Any Fingerhut)
1151 * enhancement: SB-INTROSPECT is now able to find definitions of
1152 profiled functions. (thanks to Troels Henriksen)
1153 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1154 as well, allowing compiler-macros for SETF-functions to expand.
1155 * enhancement: step-instrumentation no longer wraps known
1156 single-value functions with multiple-value context, allowing
1157 better type inference.
1158 * fixed bug #337: use of MAKE-METHOD in method combination now works
1159 even in the presence of user-defined method classes. (reported by
1160 Bruno Haible and Pascal Costanza)
1161 * fixed bug #339(c): if there are applicable methods not part of any
1162 long-form method-combination group, call INVALID-METHOD-ERROR.
1163 (reported by Bruno Haible)
1164 * fixed bug #361: the :FUNCTION initarg in the protocol for
1165 initialization of methods can now be used to override
1166 internally-produced optimized functions. (reported by Bruno
1168 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1169 system-provided lambda expression no longer cause warnings about
1170 unbound #:|pv-table| symbols.
1171 * bug fix: improved the handling of type declarations and the
1172 detection of violations for keyword arguments with non-constant
1174 * bug fix: potentially erronous calls to PATHNAME and
1175 MERGE-PATHNAMES were being flushed in some cases.
1176 (reported by Richard Kreuter)
1177 * bug fix: compiled calls to TYPEP were mishandling obsolete
1178 instances. (reported by James Bielman and Attila Lendvai)
1179 * bug fix: format strings with ~> without matching ~< no longer
1180 trigger an AVER, but signal an understandable error instead.
1181 (reported by Antonio Martinez)
1182 * bug fix: specifying an output-file without a pathname-type for
1183 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1184 of input-file instead of "fasl". (reported by Robert Dodier)
1185 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1186 (reported by James Y Knight).
1187 * bug fix: compiler-macros-function did not consider the environment
1188 argument for shadowing by local functions.
1189 * bug fix: compiler-macros expansion was inhibited by local INLINE
1191 * bug fix: inline expansions of known functions were subject to
1192 step-instrumentation in high debug policies, leading to problems
1193 with type-inference.
1194 * bug fix: compiler failed to differentiate between different CONS
1195 types in some cases.
1196 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1197 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1198 * bug fix: #368: incorrect use of expressed vs. upgraded array
1200 * bug fix: #306a: more precise unions of array types.
1201 * thread-safety improvements:
1202 ** CONDITION-WAIT could return early on Linux, if the thread was
1203 interrupted and subsequently continued with SIGCONT.
1204 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1206 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1207 * added support for the ucs-2 external format. (contributed by Ivan
1209 * minor incompatible change: pretty printing of objects of type
1210 (cons symbol) is, in the default pprint-dispatch-table, now
1211 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1213 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1214 called later in a class's lifetime, possibly as late as when the
1215 first instance of the class is created. Previously,
1216 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1217 class became finalizeable.
1218 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1219 for multibyte external-format streams. (thanks to "vbzoli")
1220 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1221 with :ALLOCATION :CLASS inherited from superclasses of the
1223 * fixed bug: anonymous classes can now be created using the :NAME
1224 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1225 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1226 * fixed bug: core-files saved with :EXECUTABLE T can again be
1227 executed when SBCL_HOME isn't set. (reported by James Knight)
1228 * fixed bug: toplevel LOCALLY forms with declarations could
1229 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1230 * fixed bug: printing from several different threads using different
1231 values of *print-case* could cause invalid output, due to
1232 some internal special variables of the printer not being bound
1233 thread-locally (reported by Max Mikhanosha)
1234 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1235 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1236 (reported by Pascal Costanza)
1237 * fixed bug: FINALIZE-INHERITANCE is called from
1238 REINITIALIZE-INSTANCE on classes when the class has previously
1239 been finalized, as required by AMOP.
1240 * minor code generation optimizations:
1241 ** better register allocation in CLOS dispatching functions
1242 ** overflow detection when coercing signed bytes to fixnums on x86-64
1243 ** is now implemented with one IMUL instruction instead of three shifts
1244 ** more efficient bit-vector access on x86 and x86-64
1245 ** more efficient access to raw structure slots on x86 and x86-64
1246 * fixed some bugs revealed by Paul Dietz' test suite:
1247 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1248 return its argument.
1250 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1251 * feature: thread support on Solaris/x86, and experimental thread support
1253 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1255 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1256 default method for SLOT-UNBOUND.
1257 * minor incompatible change: prevent the user from specializing the
1258 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1259 somewhat counter to the intent of the protocol, I (CSR) think, and
1260 additionally it just doesn't work in SBCL as currently
1261 implemented, thanks to optimizations (that are always valid for
1262 the other three SLOT-VALUEish functions, but not for the setter).
1263 * minor incompatible change: the :SB-LDB feature is now enabled by
1264 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1265 the low-level debugger.
1266 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1267 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1268 down to an SB-SYS:FD-STREAM, allowing direct communication in
1269 more cases. Temporary files and pipes are still used as a fallback
1271 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1272 on the non-reentrant C functions localtime(3) and gmtime(3).
1273 * bug fix: global optimization policy was not visible in LOCALLY and
1275 * bug fix: class objects can be used as specializers in methods.
1276 (reported by Pascal Costanza)
1277 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1278 with a type error. (reported by blitz_ on #lisp)
1279 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1280 failed with a type error. (reported by Pascal Bourguignon)
1281 * bug fix: merging pathnames against defaults with :DIRECTORY
1282 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1283 (reported by James Y Knight)
1284 * bug fix: saving large (>2GB) cores on x86-64 now works
1285 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1286 constant index and a (simple-array (signed-byte 32)) array
1287 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1288 error (patch by Robert J. Macomber)
1289 * feature: TIME now displays the amount of run-time spent in GC
1290 * bug fix: The debugger now does a better job of respecting
1291 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1292 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1293 workaround for bug 403.)
1294 * bug fix: floating point exception handling now works on FreeBSD
1295 (thanks to NIIMI Satoshi)
1296 * fixed some bugs revealed by Paul Dietz' test suite:
1297 ** MISC.641: LET-conversion were not supposed to work in late
1299 * improvements to the Win32/x86 port:
1300 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1301 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1303 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1304 * new feature: source path information is generated for macro-expansion
1305 errors for use in IDE's like Slime (thanks to Helmut Eller)
1306 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1307 * bug fix: compiler does not loop forever on an invalid type in
1309 * improvement: compilation of most CLOS applications is significantly
1311 * optimization: added a limited bytecode compiler for simple toplevel
1312 forms, speeding up compilation and FASL loading
1313 * bug fix: the statistical profiler now properly distinguishes anonymous
1316 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1317 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1318 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1319 into subclasses of the finalized class. Now user calls to
1320 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1321 system return before any subclasses are finalized.
1322 * minor incompatible change: The reader no longer ignores errors
1323 regarding non-existent packages in #+ and #- feature tests.
1324 * new feature: command line options --no-sysinit, --no-userinit to
1325 inhibit loading the corresponding init files
1326 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1327 for sending data through UDP sockets (thanks to François-René Rideau)
1328 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1329 error is signalled instead (thanks to François-René Rideau)
1330 * minor incompatible change: Error signalling behaviour of lexical
1331 operations violating package locks has changed slightly. Refer to
1332 documentation on package locks for details.
1333 * enhancement: EVAL can process IF-expressions without resorting to the
1335 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1336 constant-folded properly due to missing out-of-line functions.
1337 (reported by Mika Pihlajamäki)
1338 * bug fix: LISTEN sometimes returned T even in cases where no data was
1339 immediately available from the stream
1340 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1341 were reversed. (reported by Levente Mészáros)
1342 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1343 when given a vector displaced to an adjustable array. (reported
1345 * bug fix: derivation of float boundaries from numbers outside the
1346 appropriate float range (reported by John Wiseman)
1347 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1349 * bug fix: precomputing cache entries for generic functions with
1350 some subclasses of specializers as yet invalid does not attempt to
1351 fill a cache line with a negative offset. (reported by Levente
1353 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1354 allow condition class objects as arguments to DOCUMENTATION and
1355 (SETF DOCUMENTATION); only find and set documentation for
1356 structure names for the STRUCTURE doc-type. (suggested by Gary
1358 * improvements to the Win32/x86 port:
1359 ** (user-homedir-pathname) and default initialization file
1360 locations now know about the user's "Documents and Settings"
1361 directory (thanks to Yaroslav Kavenchuk)
1362 ** run-program is implemented (thanks to Mike Thomas)
1363 ** sockets support (thanks to Timothy Ritchey)
1364 ** better backtrace support (thanks to Alastair Bridgewater)
1365 ** sb-grovel supported
1366 ** asdf-install and sb-posix work somewhat
1367 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1368 * improvements to the Solaris/x86 port:
1369 ** works on Solaris 11/Solaris Express
1370 ** floating-point exception handling support
1371 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1372 * fixed some bugs revealed by Paul Dietz' test suite:
1373 ** REMOVE-METHOD returns its generic function argument even when
1374 the method is not one of the generic functions' methods.
1375 ** objects declared as MEMBER types can be admissible arguments to
1376 structure accessors.
1377 ** printing characters should simply be printed by the FORMAT ~:C
1379 ** compiler failure when compiling functions with hairy constant
1380 defaults for optional parameters.
1381 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1382 function, which is already optimized.
1384 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1385 * new platform: experimental support for SBCL x86/Darwin, including
1386 MacOS X 10.4.5 on Intel.
1387 * new feature: Unicode character names are now known to the system
1388 (through CHAR-NAME and NAME-CHAR).
1389 * new feature: the filesystem location of SBCL's core file is
1390 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1391 * minor incompatible change: the contrib modules SB-POSIX and
1392 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1393 this change is to make it easier to distribute
1394 location-independent binaries.
1395 * bug fix: as implied by AMOP, standardized classes no longer have
1396 slots named by external symbols of public packages. (reported by
1398 * optimization: calling functions via constant symbols -- as in
1399 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1400 via the function object as in (FUNCALL #'FOO).
1401 * optimization: on x86 and x86-64, the calling convention for the
1402 case of dealing with an unknown number of values has been altered
1403 to be friendlier to the prediction heuristics implemented,
1404 particularly with reference to CALL and RET pairing. (thanks to
1405 Alastair Bridgewater)
1406 * optimization: on x86, the code for access to thread-local symbol
1407 values and binding/unbinding of thread-local symbols is smaller.
1408 (thanks to Alastair Bridgewater)
1409 * enhancement: CONSTANTP is now able to determine constantness of
1410 more complex forms, including calls to constant-foldable standardized
1411 functions and some special forms beyond QUOTE.
1412 * fixed bug: occasional GC crashes on Solaris/x86
1413 * optimization: x86-64 supports stack allocation of results of simple
1414 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1415 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1416 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1417 (thanks to James Knight)
1418 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1419 by the standard (thanks to Stephen Compall)
1421 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1422 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1423 be used for bundling the runtime and the core file into one
1424 executable binary. This feature is not currently supported on all SBCL
1425 platforms. (thanks to James Bielman and NIIMI Satoshi)
1426 * new feature: a generational or ephemeral garbage collector is now
1427 the default on the PowerPC platform (both Linux and Darwin). The
1428 old Cheney (stop and copy) collector is a build-time option.
1429 (thanks to Cyrus Harmon, after Raymond Toy)
1430 * minor incompatible change: the method by which SBCL finds its
1431 contributed modules has changed; it no longer relies on symbolic
1432 links from an $SBCL_HOME/systems directory, but searches directly
1433 in the subdirectories of $SBCL_HOME.
1434 * enhancement: the dynamic heap size on the Linux/PPC platform is
1435 markedly larger, even using the older Cheney garbage collector.
1436 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1437 certain complicated string types. (reported by Gary King)
1438 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1439 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1440 * fixed bug: DOCUMENTATION on structures no longer signals an
1441 error if no structure type of the right name exists. (reported by
1443 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1444 applicable non-standard primary or :AROUND method on
1445 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1446 no longer cause unbound variable errors. (reported by Kevin Reid)
1447 * fixed bug: metacircle resolution in cases where methods have slots
1448 added before the slots from STANDARD-METHOD. (reported by Jean
1450 * fixed bug: the Power PC assembly code for calling into lisp
1451 sometimes computed its return address wrongly (depending on the
1452 15th bit of the address, fixed at link time). This used to
1453 manifest itself in a segmentation violation while building PCL.
1454 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1455 many others over the years)
1456 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1457 the stack pointer (treated as a signed integer) is negative.
1458 (thanks to Peter van Eynde)
1460 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1461 * new platform: experimental support for the Windows operating
1462 system has been added. (thanks to Alastair Bridgewater)
1463 * fixed several bugs in and robustified the PPC FFI (including
1464 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1465 * bug fix: allow non-simple string symbol names (reported by Paul
1467 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1469 * bug fix: saving a core corrupted callbacks on x86/x86-64
1470 * bug fix: closed a loophole in metacircularity detection and
1471 grounding in the PCL implementation of CLOS.
1472 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1473 (reported by tomppa on #lisp)
1474 * bug fix: clear the direction flag on Lisp -> C transitions, as
1475 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1476 (reported by Andrej Grozin and Hendrik Maryns)
1477 * optimization: major improvements to GC efficiency on GENCGC platforms
1478 * optimization: faster implementation of EQUAL
1479 * optimization: emit more efficient opcodes for some common
1480 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1481 * optimization: several other minor code-generation improvements on x86-64
1482 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1484 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1485 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1486 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1487 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1488 by ANSI as a generic function, and for consistency (SETF
1489 GENERIC-FUNCTION-NAME) is treated likewise.
1490 * fixed bug #233.b: make constraint propagation notice when a variable
1491 value is changed after it is referenced but before it is used
1492 * fixed bug #296: no more arbitrary behaviour from filenames with
1493 odd characters as --load arguments. (reported by Adam Warner)
1494 * fixed bug #390: :CHARACTER-SET pathname components now work as
1495 expected. (reported by Tim Daly Jr)
1496 * fixed bug #391: complicated :TYPE intersections in slot
1497 definitions no longer cause an error in PCL internals.
1498 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1499 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1500 returning the number of octets which would be written to the
1501 file-stream. (thanks to Robert J. Macomber)
1502 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1503 arguments to the internal stream functions. (thanks to David
1505 * bug fix: stack exhaustion is now handled on the x86/SunOS
1506 platform. (thanks to Daisuke Homma)
1507 * bug fix: more accurate ROOM results on GENCGC platforms
1508 * optimization: improved type inference for arithmetic-for
1509 index variables in LOOP
1510 * optimization: faster floating-point SQRT on x86-64
1511 * fixed some bugs revealed by Paul Dietz' test suite:
1512 ** DOCUMENTATION returns NIL instead of "" for method combinations
1513 that don't have a docstring
1515 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1516 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1517 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1518 therefore are not customizeable by user code (as seems to be at
1519 least permitted and maybe required by AMOP). As a consolation,
1520 however, the SBCL implementation of these functions now calls
1521 REINITIALIZE-INSTANCE as specified by AMOP.
1522 * bug fix: slot-definition documentation is propagated as per ANSI
1523 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1524 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1525 argument, as do eslotd initialization methods. (from Pascal
1526 Costanza's "Closer" project)
1527 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1528 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1530 * bug fix: it is now possible to have more than one subclass of
1531 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1532 (reported by Bruno Haible, Pascal Costanza and others)
1533 * bug fix: the dependent update protocol now works for generic
1534 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1535 and Pascal Costanza)
1536 * bug fix: condition-class instances corresponding to
1537 DEFINE-CONDITION forms are now created eagerly. (reported by
1538 Kalle Olavi Niemitalo on comp.lang.lisp)
1539 * bug fix: floating point printing is more accurate in some
1540 circumstances. (thanks to Simon Alexander)
1541 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1542 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1543 * bug fix: callbacks on OS X now preserve stack-alignment.
1544 (thanks to Cyrus Harmon)
1545 * enhancement: the x86-64 disassembler is much better at
1546 disassembling SSE instructions. (thanks to Lutz Euler)
1547 * enhancement: CHECK-TYPE on a variable now allows type-inference
1548 (thanks to Vincent Arkesteijn)
1549 * optimization: improved performance of EUC-JP external format.
1550 (thanks to NIIMI Satoshi)
1551 * optimization: performance improvements to IO on file streams of
1552 :ELEMENT-TYPE CHARACTER
1553 * optimization: much faster memory allocation on x86-64
1554 * optimization: faster garbage collections (latency and throughput)
1556 * optimization: faster bignum subtraction and division on x86 and x86-64
1557 (thanks to Lutz Euler)
1558 * optimization: more accurate type-inference for loops that use a
1559 floating point index variable or a negative step.
1561 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1562 * bug fix: add a workaround to SBCL looping infinitely at startup on
1563 Linux kernels with apparently buggy implementations of personality().
1564 (thanks to Svein Ove Aas)
1565 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1566 (thanks to David Lichteblau)
1567 * bug fix: local bindings shadow global symbol macros for
1568 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1569 * optimization: non-open coded uses of numeric comparison operators
1570 (e.g. >) no longer cons when called with more than one parameter
1571 on platforms supporting dynamic-extent allocation.
1572 * enhancement: saving cores with foreign code loaded is now supported
1573 on MIPS/Linux in addition to the previously supported platforms.
1574 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1575 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1576 * bug fix: division by zero in sb-sprof when no samples were collected
1577 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1578 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1579 (thanks to Alexander Kjeldaas)
1580 * new feature: ignoring the return values of destructive functions
1581 like NREVERSE signals a compile-time style-warning.
1582 (thanks to Kevin Reid)
1583 * new feature: the alignment of alien structure fields can be
1584 explicitly specified. (thanks to Cyrus Harmon)
1585 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1586 and dump core on SIGQUIT
1588 ** incompatible change: threads do not inherit values of specials
1589 from their parents (see manual)
1590 ** bug fix: threads stacks belonging to dead threads are freed by the
1591 next exiting thread, no need to gc to collect thread stacks anymore
1592 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1593 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1594 ** bug fix: dynamic variable and thread start related gc lossage
1595 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1597 * fixed some bugs revealed by Paul Dietz' test suite:
1598 ** SUBTYPEP is slightly more accurate on heinously complicated
1599 CONS types where some of the members have uncertain (in the
1600 NIL, NIL sense) type relationships to each other.
1602 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1603 no longer purified unless :PURIFY T is explicitly specified.
1604 ** Non-purified cores are significantly smaller than before
1606 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1607 * new feature: timers based on Zach Beane's excellent timer package
1608 * added support for the following external formats: koi8-u,
1609 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1610 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1611 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1612 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1613 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1614 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1615 * incompatible change: a threaded SBCL will no longer revert to
1616 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1617 * bug fix: interrupts are disabled until startup is complete; no
1618 more sigsegvs when receiving a signal to soon
1619 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1621 * bug fix: add a workaround for the memory randomization features in
1622 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1623 workaround will only be in effect on systems with the proc filesystem
1625 * bug fix: printing objects of type HASH-TABLE signals a
1626 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1628 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1629 have been running for over 50 days. (reported by Gilbert Baumann)
1630 * bug fix: the logic for getting names of functions gets less
1631 confused when confronded with alternate-metaclass
1632 funcallable-instances. (reported by Cyrus Harmon)
1633 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1634 consistent, even on internal alternate-metaclass objects.
1635 * bug fix: flush closure information collected by physical
1636 environment analysis prepass before the main pass. (bug reported
1638 * bug fix: compiler pack phase does not modify a hashtable, which is
1639 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1640 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1641 may be expanded. (reported by Alexander <malishev> on c.l.l)
1642 * bug fix: no more style-warnings when compiling code using LAST
1643 under high-SPEED low-SPACE settings. (reported by David Wallin
1645 * fixed some incompatibilities between SBCL's MOP and the MOP
1647 ** the METAOBJECT class is now implemented;
1648 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1649 STANDARD-OBJECT, as required;
1650 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1651 now compatible (as required by VALIDATE-SUPERCLASS); there
1652 remains a consistency requirement over the presence or absence
1653 of the FUNCTION class in the superclass list of finalized
1654 classes; see the manual for more details;
1655 ** the :AROUND method for COMPUTE-SLOTS on
1656 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1657 requested slot ordering.
1659 ** bug fix: parent thread now can be gc'ed even with a live
1661 ** bug fix: binding a special with PROGV to no value is not
1662 the same as that symbol not having been bound (thanks to
1664 ** bug fix: binding specials is thread safe (thanks to
1666 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1667 and SB-SPROF do not die with 'no handler for signal XX in
1668 interrupt_handle_now(..)' anymore
1669 ** bug fix: WITH-TIMEOUT works with multiple running threads
1670 * fixed some bugs revealed by Paul Dietz' test suite:
1671 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1672 the :method-class keyword argument.
1674 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1675 * new port: the Solaris operating system on x86 processors is now
1676 mostly supported, though some rough edges in the environment
1677 remain. (thanks to Daisuke Homma)
1678 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1679 space for its heap. (thanks to Thiemo Seufer)
1680 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1681 closures. (thanks to Thiemo Seufer)
1682 * minor incompatible change: eof selects abort in the debugger.
1683 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1684 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1686 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1687 deprecated, and will go away in a future revision of SBCL.
1688 * minor incompatible change: GC-ON and GC-OFF are no longer
1689 implemented with a counter, it does not matter how many times gc
1690 is switched on or off
1691 * bug fix: discriminating functions for generic function classes
1692 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1693 make invalid assumptions about method precedence order. (reported
1695 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1696 platforms. (thanks to Thiemo Seufer)
1697 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1698 * bug fix: correct pathname printing with printer escaping is on.
1699 (thanks to Kevin Reid)
1700 * bug fix: complex VOP definitions in "user-space" no longer trigger
1701 package locks. (reported by Zach Beane)
1702 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1703 for funcallable-instance functions, and is no different from
1705 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1706 characters in the current readtable. (reported by Nicholas Neuss)
1707 * bug fix: SUBTYPEP on various CONS types returns more a more
1708 accurate acknowledgment of its certainty.
1709 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1710 lists in some cases. This partially fixes bug 384.
1711 * flush all standard streams before prompting in the REPL and the
1713 * bug fix: signal handling and triggering gc do not conflict
1714 directly anymore, in particular a high frequency sb-sprof does
1715 not prevent gc from running
1716 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1717 approximation for timezone and DST information between the
1718 universal time epoch and the smallest negative 32-bit time_t.
1719 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1720 year 1899 so long as the encoded time is non-negative.
1721 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1722 the correct answer for non-constant rotate amounts when performing
1723 an inline 32-bit rotation.
1725 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1726 there is only one thread in the session
1727 ** bug fix: memory leak for streams created in one thread and
1728 written to in another
1729 ** bug fix: lockup when compiled with gcc4
1730 ** bug fix: race that allows the gc to be triggered when gc is
1732 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1733 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1735 ** bug fix: finished threads are gc'ed properly
1736 * fixed some bugs revealed by Paul Dietz' test suite:
1737 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1738 has arguments with a different set of applicable methods from
1739 the orignal arguments.
1740 ** The type error thrown by MAP now has a correct expected-type
1742 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1743 name a compiled function.
1744 ** Three MISC tests where a large bignum was improperly coerced to
1745 a float that couldn't represent that bignum during type
1746 derivation were fixed.
1747 ** SUBTYPEP can now handle types involving the negation of a
1748 list-form FUNCTION type.
1749 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1750 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1751 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1753 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1754 * New feature: Experimental support for bivalent streams: streams
1755 opened with :element-type :default now allow character and binary
1756 (unsigned-byte 8) I/O
1757 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1758 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1760 * bug fix: no more highly sporadic "couldn't check whether ~S is
1761 readable" when reading a stream and an interrupt hits in the middle
1762 of a select system call
1763 * compiler better recognizes complex arrays (reported by Eduardo
1765 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1766 for variables on SBCL built with linkage-tables. (reported by Luis
1768 * various error reporting improvements.
1769 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1770 (Thanks to Thiemo Seufer)
1771 * bug fix: nested reader invokations work correctly
1772 * bug fix: it is possible to have simultaneous references to foreign
1773 code and foreign data with the same name.
1775 ** added x86-64 support
1776 ** incompatible change: the threading api now works with thread
1777 objects instead of thread ids
1778 ** bug fix: threads are protected from signals and interruption when
1779 starting up or going down
1780 ** bug fix: a race where an exiting thread could lose its stack to gc
1781 ** bug fix: don't halt on infinite error in threads if possible
1782 ** fixed numerous gc deadlocks introduced in the pthread merge
1783 ** bug fix: fixed thread safety issues in read and print
1784 ** bug fix: debugger doesn't hang on session lock if interrupted at
1785 an inappropriate moment
1786 ** bug fix: run-program is now thread safe(r)
1787 ** bug fix: inner with-recursive-lock no longer releases the mutex
1788 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1789 * fixed some bugs revealed by Paul Dietz' test suite:
1790 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1791 EXPECTED-TYPE slots filled.
1792 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1794 ** MAKE-CONDITION accepts classes as type-designators.
1795 ** COMPILE may never return NIL.
1796 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1797 range before calling Unix time functions
1799 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1800 * numerous signal handling fixes to increase stability
1801 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1802 * minor incompatible change: we now correctly canonize default
1803 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1804 as per the MOP, rather than the historical (INITARG INITFUNCTION
1805 INITFORM). (reported by Bruno Haible)
1806 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1807 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1808 for more information.
1809 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1810 pathname is a directory pathname.
1811 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1812 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1814 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1815 :METACLASS argument in addition to a class name. (reported by
1816 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1817 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1818 (reported by Bruno Haible; patch from Gerd Moellmann)
1819 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1821 * bug fix: more cleanups to the floating point exception handling on
1822 x86-64 (thanks to James Knight)
1823 * bug fix: the compiler does not try to constant fold calls of
1824 COERCE and BIT-* functions when they return freshly constructed
1825 objects. (reported by Nikodemus Siivola and Paul Dietz)
1826 * optimization: improved the MIPS versions of generic (in the
1827 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1828 * optimization: direct conversion of (unsigned-byte 32) to floats on
1829 the PowerPC platform.
1830 * optimization: structure instances with raw slots now use less
1831 memory, and probably show better memory locality. (thanks to
1833 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1834 are treated as requests for stack allocation on the x86-64,
1835 Alpha-32, PPC and SPARC platforms.
1836 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1837 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1838 (thanks to Tony Martinez)
1840 ** gcing a dead thread can no longer lead to lockups
1841 ** threads block signals until they are set up properly
1842 ** errno is no longer shared by threads
1843 ** interrupt-thread restores the eflags register on x86
1844 ** fixed some lockups due to gc/thread interaction
1845 * fixed some bugs revealed by Paul Dietz' test suite:
1846 ** invalid dotted lists no longer raise a read error when
1847 *READ-SUPPRESS* is T
1848 ** signal an error if a symbol that names a declaration is used
1849 as the name of a type, or vice versa
1850 ** allow using the (declare (typespec var*)) abbreviation for
1851 (declare (type typespec var*)) with all type specifiers
1852 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1853 ** always return NIL from PPRINT-POP when OBJECT is NIL
1854 ** don't signal errors when pretty-printing malformed LABELS,
1855 FLET or MACROLET forms
1856 ** declarations in a DOLIST body are also in scope for the
1858 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1860 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1863 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1864 * fixed cross-compiler leakages that prevented building a 32-bit
1865 target with a 64-bit host compiler.
1866 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1867 opened with :IF-EXISTS :OVERWRITE.
1868 * fixed bug 281: error for an invalid qualifier in a short-form method
1869 combination method is not signalled until the faulty method is called.
1870 * bug fix: iteration variable type inferrer failed to deal with open
1871 intervals. (reported by Alan Shields)
1872 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1873 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1874 or more runtime options were provided to the sbcl binary.
1875 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1876 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1877 * optimization: there's now a fast-path for fixnum arguments in the
1878 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1879 * optimization: the code generated on x86-64 is more compact thanks
1880 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1881 * bug fix: floating-point exception handling now partly works on
1882 x86-64. (Thanks to James Knight)
1883 * improvement to the MIPS backend from Thiemo Seufer: C-style
1884 64-bit long long arguments and return values to alien functions
1886 * fixed some bugs revealed by Paul Dietz' test suite:
1887 ** the type-error signalled from WARN has a filled-in DATUM slot.
1888 ** the type-error required when a stream is not associated with
1889 a file has the stream as its datum.
1890 ** type-errors on single-floats on x86-64 no longer have
1891 :INVALID-OBJECT as the datum
1892 ** the type-errors signalled for invalid function names now have
1893 a correct expected type
1894 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1895 for structures defined with a :TYPE. Documentation strings for
1896 typed structures are no longer immediately discarded
1897 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1898 broadcast streams and synonym streams. FILE-LENGTH now also works
1899 on broadcast streams.
1901 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1902 * incompatible change: the --noprogrammer option, deprecated since
1903 version 0.7.5, has been removed. Please use the equivalent
1904 --disable-debugger option instead.
1905 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1907 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1908 inoperational for a while now) has been completely removed.
1909 * null lexical environments are now printed as #<NULL-LEXENV>,
1910 significantly reducing the amount of clutter in typical backtraces.
1911 * documentation on weak pointers, finalization, and after GC hooks
1912 has been added to the manual.
1913 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1914 as other specialized array types, is much faster. SUBSEQ and
1915 COPY-SEQ on such arrays have also been sped up.
1916 * optimization: EQL is now more efficient when at least other argument
1917 is known to be of type (OR FIXNUM (NOT NUMBER)).
1918 * fixed bug: the runtime is now less vulnerable to changes in the
1919 size of the SBCL object on OS X, and virtual memory is reserved for
1920 all spaces that need to be at a fixed address.
1921 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1922 * fixed bug: finalizers and after GC hooks that cause consing are now
1924 * fixed bug: compiler error messages and summaries are now printed to
1925 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1926 * fixed inference of the upper bound of an iteration variable.
1927 (reported by Rajat Datta).
1928 * fixed bug 211e: calling local functions with duplicated constant
1929 keyword argument no longer causes a bogus style warning about an
1931 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1932 ftype declaration to be disregarded. (reported by Dave Roberts)
1933 * fixed bug 373: caused by erronous compilation of references to alien
1934 variables in the runtime on ppc/darwin.
1935 * fixed bug 376: CONJUGATE type deriver.
1936 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1937 (reported by Baughn on #lisp)
1938 * a cross-compiler bug on non-x86 platforms has been identified and
1939 fixed. (thanks to Bruno Haible)
1940 * improvements to the MIPS runtime code for increased stability.
1941 (thanks to Thiemo Seufer)
1942 * increased the maximimum compact environment size to allow
1943 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1944 * partial workaround for bug 135: don't name the function we're
1945 calling for hairy cases of EVAL, so as not to accumulate one environment
1946 entry per call to EVAL. (reported by Kevin Reid)
1947 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1948 * optimization: type testing for non-vector arrays should be faster.
1949 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1951 * bug fix: setting 31st element of a bit vector to zero did not work
1953 * bug fix: redefining a class definition which failed due to a
1954 previous accessor / function clash now works (but see BUGS entry
1955 #380 for more problems in this area). (thanks to Zach Beane)
1956 * the long form of DEFINE-METHOD-COMBINATION disables method group
1957 checking when given a single method group with pattern *. (thanks
1959 * on x86 compiler supports stack allocation of results of simple
1960 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1961 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1962 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1963 * fixed some bugs related to Unicode integration:
1964 ** the restarts for recovering from input and output encoding
1965 errors only appear when there is in fact such an error to
1967 * fixed some bugs revealed by Paul Dietz' test suite:
1968 ** MISC.549 and similar: late transformation of unsafe type
1969 assertions into derived types caused unexpected code
1971 ** SCALE-FLOAT type deriver is less wrong.
1972 ** type derivers for EXP, LOG and similar functions compute result
1973 types for complex arguments better.
1974 ** (MISC.563) CONJUGATE type deriver works for very restricted
1976 ** out-of-line type testers for character strings are available.
1977 ** EQUAL compiler transform understands specialness of objects
1979 ** accessing double-floats stored on the stack now works on x86-64.
1980 ** debugger internals could sometimes create invalid lispobjs,
1981 resulting in GC crashes.
1982 ** MISC.548: type check weakening can convert required type into
1984 ** initialization forms for bindings are not in scope of free special
1987 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1988 * incompatible change: thread support for non-NPTL systems has
1989 been removed - locking is buggy and unreliable. A threaded
1990 SBCL build will now warn at startup and refuse to create
1991 new threads, unless futex support is detected in the kernel
1992 * incompatible change: the top level REPL now has only an ABORT
1993 restart associated with it, not TOPLEVEL and ABORT as it used to.
1994 TOP and TOPLEVEL are now available as debugger commands for
1995 returning to the top level.
1996 * incompatible change: forms evaluated in the REPL now use the
1997 global optimization policy.
1998 * incompatible change: user- and system-initialization files are
1999 no longer processed with LOAD, but by READ and EVAL; hence the
2000 global optimization policy, startup package, readtable, etc,
2002 * The .fasl file format number has been incremented because of
2003 various incompatible changes.
2004 * internal entry point details and argument counts no longer appear
2005 in backtraces unless explicitly requested by setting
2006 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2007 * built-in and standard functions no longer have names like "top
2008 level local call to FOO".
2009 * fixed bug 32: functions defined in non-null lexical environments
2010 now have more legible printed representation
2011 * fixed bug 33: functions defined in non-null lexical environemnts
2012 are now more amenable to inspection by INSPECT.
2013 * workaround for bug 354: XEPs no longer appear in backtraces unless
2014 explicitly requested.
2015 * fixed bug: receiving the signal which results from attempting to
2016 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2017 SIGBUS on other *BSDs) on architectures where the C stack is also
2018 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2019 to debugger confusion or wild instability. (reported by Cheuksan
2021 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2022 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2023 (reported by Lutz Euler)
2024 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2025 compiled code. (reported by Paul Dietz)
2026 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2027 specialized parameter to a method to something that is not TYPEP
2028 the specializer is now possible.
2029 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2030 face of package deletion.
2031 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2032 pathname. (reported by David Tolpin on c.l.l)
2033 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2034 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2035 STRING-STREAM and FILE-STREAM, respectively.
2036 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2037 than previously; in addition, its test suite is now run on build.
2038 (thanks to Luke Gorrie)
2039 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2040 * optimization: added a immediate representation for single-floats
2042 * fixed some bugs revealed by Paul Dietz' test suite:
2043 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2044 ** attempting to create a package with a colliding nickname causes
2045 correctable errors to be signalled.
2046 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2047 ** several x86-64 backend bugs related to sign-extension of immediate
2050 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2051 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2052 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2054 * fixed loading of multiply forward-referenced layouts.
2055 (thanks to Cheuksan Wang)
2056 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2057 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2058 (see COMPILE-FILE documentation for details of :PRINT option)
2059 * fixed bugs 19 and 317: fixed-format floating point printing is
2060 more accurate. This also fixes a bug reported by Adam Warner
2061 related to the ~@F format directive.
2062 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2064 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2065 dispatch table if the from-char is a dispatch macro character.
2066 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2067 by the wordsize no longer ignore the last word. (reported by Lutz
2069 * fixed bug in type checking of dynamic-extent variables. (reported
2071 * optimization: sequence traversal functions use their freedom to
2072 coerce function designators to functions.
2073 * optimization: code with many calls to CLOS methods specialized on
2074 CLOS classes has had redundant type checks removed.
2075 * optimization: added declarations to speed up operations that access
2076 the internal character database (for example STRING-UPCASE)
2077 * optimization: comparison operations between floats and sufficiently small
2078 fixnums no longer create extra rationals
2079 * fixed some bugs related to Unicode integration:
2080 ** portions of multibyte characters at the end of buffers for
2081 character-based file input are correctly transferred to the
2082 start of the buffer at the next read.
2083 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2084 passing it through to OPEN.
2085 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2086 argument given to internal calls to OPEN.
2087 ** the built-in comment readers (introduced by character sequences
2088 ";" and "#|") are more forgiving to encoding errors; they will
2089 STYLE-WARN and then attempt to resync the stream at a character
2090 boundary. (thanks to Teemu Kalvas)
2091 * fixed some bugs in the x86-64 port:
2092 ** Negative short int return values from c-calls are sign-extended
2094 ** The stack is aligned to 16-bytes for c-calls, as required by
2095 the ABI. (thanks to Cheuksan Wang)
2096 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2097 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2098 for enums. (thanks to Vincent Arkesteijn)
2099 ** Multiple small optimizations and bugfixes for floating point
2101 * fixed some bugs revealed by Paul Dietz' test suite:
2102 ** Space, Tab, Linefeed, Return and Page have the invalid
2103 secondary constituent character trait.
2104 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2106 ** WITH-INPUT-FROM-STRING should only update the index place on
2108 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2109 works more reliably.
2110 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2111 with one-dimensional arrays with fill pointers.
2112 ** TYPE-OF failed on a complex with an integer realpart and a
2114 ** compiler failure during type inference for the code of form
2115 (IF (EQL X (THE ...)) ...) (MISC.535).
2117 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2118 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2119 platform. The port supports 61-bit fixnums, large memory spaces
2120 and reloading shared object files.
2121 * enhancement: saving cores with foreign code loaded is now
2122 supported on ppc/Darwin in addition to the previously supported
2124 * enhancement: the statistical profiler now walks deeper into the
2125 call stack for more meaningful call-graphs and accrued time
2126 reports (x86/x86-64 only). It also now reports time spent in
2128 * enhancement: it is now possible to trace most individual methods
2129 of a generic function in addition to tracing the generic function
2131 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2133 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2134 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2135 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2136 produces an error. (thanks to Vincent Arkesteijn)
2137 * bug fix: NAMESTRING on pathnames with :WILD components in their
2138 directories works correctly. (thanks to Artem V. Andreev)
2139 * fixed bug 125: compiler preserves identity of closures. (reported
2141 * bug fixed: functions with &REST arguments sometimes failed with
2142 "Undefined function" when compiled with (DEBUG 3). (reported by
2144 * bug fix: overflow during compiling of setting element of a bit
2145 vector with constant index and value. (reported by Timmy Douglas)
2146 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2147 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2148 * on x86 compiler partially supports stack allocation of dynamic-extent
2150 * GO and RETURN-FROM do not check the extent of their exit points
2151 when compiled with SAFETY 0.
2152 * fixed some bugs related to Unicode integration:
2153 ** encoding and decoding errors are now much more robustly
2154 handled; it should now be possible to recover even from invalid
2155 input or output to the terminal. (thanks to Teemu Kalvas)
2156 ** provided a first cut at implementing STRING-TO-OCTETS and
2157 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2158 ** altered the SB-MD5 contributed module slightly, changing the
2159 interface just enough for it to be supportable for builds where
2160 lisp characters are not eight bits.
2161 * fixed some bugs revealed by Paul Dietz' test suite:
2162 ** the FORMATTER-generated functions for ~V[ conditionals require
2163 the correct number of arguments.
2164 ** READ-FROM-STRING returns the mandated second value when applied
2165 to displaced strings.
2166 ** the #\Rubout and #\Backspace characters are treated as invalid
2167 constituent characters by the tokenizer.
2169 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2170 * new feature: reloading changed shared object files with
2171 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2172 * new feature: references to foreign variables and functions
2173 can now be compiled and loaded before the corresponding shared
2174 object file is loaded, as long as the foreign definitions are
2175 available at runtime.
2176 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2177 supported. (thanks to Dan Debertin)
2178 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2179 just keywords. (thanks to Vincent Arkesteijn)
2180 * fixed bug #331: structure-class instances corresponding to
2181 DEFSTRUCT forms are now created eagerly.
2182 * fixed bug #345: backtraces from calls to undefined functions work
2183 on x86 as well. Related bug #61 is now also partially fixed on x86
2184 (backtraces from throws to unknown catch tags.)
2185 * bug fix: lambda-list parsing is now stricter vrt. order and number
2186 of lambda-list keywords.
2187 * bug fix: as specified by AMOP, an error is signalled if a
2188 class-option appears multiple times in a DEFCLASS form. (reported
2190 * bug fix: RANDOM can be compiled when the compiler derives the type
2191 of its numeric argument as a disjoint set of small integers.
2192 (reported by Paul Dietz)
2193 * bug fix: starting a core saved with shared objects loaded when
2194 those objects are not available no longer causes threaded SBCL to
2195 hang. (reported by Sean Ross)
2196 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2198 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2199 argument, which must always be NIL. (reported by Kalle Niemitalo)
2200 * bug fix: printing 1.0d+23 no longer results in an error.
2201 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2202 * bug fix: structure slot setters preserve evaluation order. (thanks
2204 * fixed some bugs related to Unicode integration:
2205 ** RUN-PROGRAM can allow its child to take input from a Lisp
2206 stream. (reported by Stefan Scholl)
2207 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2208 locales. (reported by Ken Causey)
2209 * fixed some bugs revealed by Paul Dietz' test suite:
2210 ** INCF, DECF and REMF evaluate their place form as specified in
2212 ** FORMATTER expands ~{ ~} iteration directives with V or #
2213 parameters correctly.
2214 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2215 consequent uses no arguments correctly.
2216 ** the system has a partial understanding of the (COMPLEX RATIO)
2218 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2221 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2222 * new feature: a build-time option (controlled by the :SB-UNICODE
2223 keyword feature, enabled by default) for building the system with
2224 support for the entire 21-bit character space defined by the
2226 * new feature: the system now has rudimentary external-format
2227 support; the primary user-visible change at this time is that
2228 characters with the high bit set (such as lower-case-e-acute) will
2229 print correctly to a terminal in a UTF-8 environment.
2230 * minor incompatible change: BASE-CHAR no longer names a class;
2231 however, CHARACTER continues to do so, as required by ANSI.
2232 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2233 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2234 has been moved to the SB-EXT package (temporarily re-exported from
2236 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2237 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2239 * fixed bug #351: better error-handlind and reporting for malformed
2241 * fixed bug #350: bignum-printing is now more memory-efficient,
2242 allowing printing of very large bignums, eg. (expt 2 10000000).
2243 (reported by Bruno Haible)
2244 * fixed bug #302: better primitive-type selection for intersection
2246 * fixed bug #308: non-graphic characters now all have names, as
2247 required. (reported by Bruno Haible)
2248 * bug fix: redefining a class with different superclasses now correctly
2249 removes it from the direct-subclasses of its previous superclasses.
2250 (reported by David Morse)
2251 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2252 new value now works. (reported by Bruno Haible)
2253 * bug fix: correct canonicalization of multiple non-standard slot
2254 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2255 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2256 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2257 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2258 now exists, an signals an error.
2259 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2260 during macroexpansion for non-iteration variables as well. (reported
2261 by Bruno Haible for CMUCL)
2262 * bug fix: Cyclic structures and unprintable objects in compiler
2263 messages no longer cause errors. (reported by Bruno Haible)
2264 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2265 and READ-FROM-STRING all now return a primary value of NIL if
2266 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2267 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2268 (reported by Bruno Haible for CMUCL)
2269 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2270 do not designate a condition. (reported by Bruno Haible for
2272 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2273 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2274 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2275 permitting resolution in favour of any of the conflicting symbols.
2276 (reported by Bruno Haible for CMUCL)
2277 * bug fix: EQUAL compiler optimizations is less aggressive on
2278 strings which can potentially compare true despite having distinct
2279 specialized array element types.
2280 * bug fix: unit enumerations can be defined without dividing by
2281 zero. (thanks to Vincent Arkesteijn)
2282 * FORMAT compile-time argument count checking has been enhanced.
2283 (report from Bruno Haible for CMUCL)
2284 * a partial workaround for the bug 262: the compiler does not try to
2285 inline-expand a local function doing RETURN-FROM from a deleted
2286 BLOCK. (thanks to Peter Denno for the bug report and to David
2287 Wragg for the simple test case)
2288 * fixed some bugs revealed by Paul Dietz' test suite:
2289 ** RENAME-PACKAGE allows all package designators as new package
2291 ** constraint propagation and lambda variable substitution are
2292 more cautious in dealing with partially deleted code.
2293 ** compiler sometimes lost reoptimization passes.
2294 ** CERROR, given a condition as condition designator, passes its
2295 remaining arguments to the continue format control without
2297 ** Case-altering FORMAT directives work correctly on non-ASCII
2299 ** The REAL type specifier handles bounds outside the floating
2300 point ranges without signalling FLOATING-POINT-OVERFLOW.
2301 ** Functions with IR1-transformations can create intercomponent
2302 references to global functions.
2303 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2305 ** FORMAT ~R treats a nil value for its first parameter correctly.
2307 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2308 * enhancement: saving cores with foreign code loaded is now
2309 supported on x86/NetBSD and sparc/Linux in addition to the previously
2310 supported platforms.
2311 * bug fix: on some platforms repeated installations caused multiple
2312 copies of HTML documentation to be installed -- should not happen
2313 any more. (reported by Stefan Scholl)
2314 * bug fix: parsing self-recursive alien record types multiple times
2315 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2316 original patch by Helmut Eller for CMUCL)
2317 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2318 (thanks to Richard Kreuter)
2319 * bug fix: defining classes whose accessors are methods on existing
2320 generic functions in other (locked) packages no longer signals
2321 bogus package lock violations. (reported by François-René Rideau)
2322 * bug fix: special variables as DEFMETHOD parameters no longer have
2323 associated bogus type declarations. (reported by David Wragg and
2325 * bug fix: read-write consistency on streams of element-type
2326 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2327 * bug fix: redefiniton of the only method of a generic function with
2328 no DEFGENERIC no longer emits a full WARNING. In addition,
2329 redefinition of generic functions with no DEFGENERIC to an
2330 incompatible lambda list now signals an error. (thanks to Zach
2332 * bug fix: DEFGENERIC now works even when there's a function of the
2333 same name in an enclosing lexical environment. (thanks to Zach
2335 * fixed compiler failure, caused by instrumenting code during
2336 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2337 * optimization: added loop analysis and improved register allocation
2338 * fixed some bugs revealed by Paul Dietz' test suite:
2339 ** POSITION on displaced vectors with non-zero displacement
2340 returns the right answer.
2341 ** (SIMPLE-STRING) is a valid type specifier for sequence
2343 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2345 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2346 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2348 ** The justification version of the FORMAT ~< directive treats
2349 non-zero minpad parameter correctly.
2351 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2352 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2353 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2354 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2355 the supported interface.
2356 * new feature: Single-stepping of code compiled with DEBUG 2 or
2357 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2358 * new feature: saving cores with foreign code loaded is now
2359 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2360 Timothy Moore's work for CMUCL)
2361 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2362 parameters to * instead of NIL if no initform is supplied.
2363 (reported by Johan Bockgaard)
2364 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2365 correctly when FUNCALL appears as the car of the form. Note:
2366 despite this FUNCALL forms are not currently subject to
2367 compiler-macro expansion. (port of Raymond Toy's fix for the
2368 same from CMUCL, reported by Johan Bockgaard)
2369 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2370 (thanks for Teemu Kalvas)
2371 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2372 case instead of terminating the iteration (thanks for Julian
2373 Squires, Sean Champ and Raymond Toy)
2374 * bug fix: incorrect expansion of defgeneric that caused a style
2375 warning. (thanks for Zach Beane)
2376 * bug fix: slot accessor effective method computation works properly
2377 for classes with multiple non-standard applicable methods on
2378 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2379 * on x86 compiler supports stack allocation of results of LIST and
2380 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2381 CMUCL implementation by Gerd Moellmann)
2382 * fixed some bugs revealed by Paul Dietz' test suite:
2383 ** FORMAT strings with both the ~<~:;~> form of the justification
2384 directive and pretty-printing directives cause an error.
2386 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2387 * incompatible change: the internal functions
2388 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2389 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2390 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2391 instead of the old functions.
2392 * new feature: on platforms where "dladdr" is available foreign
2393 function names now appear in backtraces. (based on Helmut Eller's
2395 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2396 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2398 * documentation: ASDF manual is now distributed with SBCL.
2399 * bug fix: SBCL can now load its contributed modules with REQUIRE
2400 even if the system-provided entries have been removed from
2401 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2403 * bug fix: backtraces involving undefined functions or assembly
2404 routines are more informative. (thanks to Brian Downing)
2405 * bug fix: mutually referent alien structures now work correctly.
2406 (reported by Rick Taube)
2407 * bug fix: structures defined by WITH-ALIEN can be referred to
2408 within other definitions in the same WITH-ALIEN.
2409 * bug fix: division operators (MOD, TRUNCATE and the like) with
2410 constant zero divisors and integer dividends no longer generate
2412 * bug fix: provide default methods for INPUT-STREAM-P and
2413 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2414 * bug fix: improve the detection and resolution of MOP metacycles
2415 (where effective method computation depends on the generic function
2416 having its effective method computed). (reported by Bruno Haible)
2417 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2418 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2419 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2420 * bug fix: pathnames with relative directory components can be
2421 represented relative to default pathnames.
2422 * optimization: in taking the GCD of bignums, reduce the two bignums
2423 to approximately the same size (using Euclid's algorithm) before
2424 applying the more sophisticated binary GCD. (thanks to Juho
2426 * optimization: COUNT on bitvectors now operates word-at-a-time.
2427 * optimization: ASH with a positive, but not necessarily constant,
2428 (leftwards) shift, when in a modular context, is compiled to a
2430 * fixed some bugs revealed by Paul Dietz' test suite:
2431 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2432 if the corresponding argument is NIL.
2433 ** FORMAT directives accepting a minpad parameter treat negative
2435 ** literal commas as character parameters to FORMAT directives are
2437 ** literal spaces directly after ~<Newline> directives within a
2438 format-logical-block (~:< ~@:>) do not induce :FILL-style
2439 conditional newlines.
2440 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2441 as specified: it no longer includes conditional newlines).
2442 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2444 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2445 :PER-LINE-PREFIX argument does not evaluate to a string.
2447 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2448 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2449 the manual for details; for now, package locks can be disabled by
2450 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2451 if no major problems are found then it is likely that they will be
2452 compiled in unconditionally.
2453 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2454 unsupported operators on all platforms. To load a shared library
2455 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2456 object file, link it into a shared library outside of SBCL and
2457 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2459 * bug workaround: ROOM T and the GC were not working together
2460 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2461 reporting facility aren't preserved. That reporting has been
2462 disabled, so now until and unless someone figures out how to make it
2463 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2464 * minor incompatible change: as threatened around sbcl-0.8.0, the
2465 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2466 The symbols are also exported from SB-PCL for backwards
2467 compatibility, but more so than before SB-PCL should be treated as
2468 an implementation-internal package.
2469 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2471 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2472 It is known as of this release not to work on the Alpha, however.
2473 * fixed bug #167: errors signalled due to illegal syntax in method
2474 bodies are now more legible.
2475 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2476 designators and can hence be used with TYPEP.
2477 * fixed bug #333: CHECK-TYPE now ensures that the type error
2478 signalled, if any, has the right object to be accessed by
2479 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2480 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2481 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2483 * fixed bug #334: programmatic addition of slots using specialized
2484 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2485 and :ALLOCATION :CLASS slots.
2486 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2487 float exponents. (rereported by Peter Seibel)
2488 * fixed a bug: #\Space (and other whitespace characters) are no
2489 longer considered to be macro characters in standard syntax by
2490 GET-MACRO-CHARACTER.
2491 * fixed bug: initialization of condition class metaobjects no longer
2492 causes an instance of the condition to be created. (reported by
2494 * fixed bug: it is now possible to have slots such that
2495 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2496 description is neither :INSTANCE nor :CLASS.
2497 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2498 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2499 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2500 non-standard SLOT-DEFINITION-ALLOCATION values.
2501 * fixed bugs: various race conditions handling exiting threads.
2502 CL-PPCRE's thread torture test now passes.
2503 * fixed arguably-a-bug: GC time proportional to number of threads in
2504 system even when most of them are idle
2505 * optimization: improved performance of BIT and SBIT on bit-vectors.
2506 * .fasl file incompatibility: The fasl file version number has
2507 been incremented because of changes associated with package locks.
2509 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2510 * minor incompatible change: the system no longer provides
2511 optimization hints (conditions which are TYPEP
2512 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2513 mode; these hints are still emitted when higher SPEED optimization
2515 * new contrib module: a sampling profiler (profiling by statistical
2516 sampling, rather than by instrumenting functions) is available as
2517 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2518 * the behaviour of the standard function ED is now customizeable by
2519 third parties through a hook variable: see ED's documentation
2520 string for information on the protocol.
2521 * the compiler no longer emits efficiency notes for (FUNCALL X)
2522 when the type of X is uncertain under default optimization
2524 * fixed bug 276: mutating a binding of a specialized parameter to a
2525 method to something that is not TYPEP the specializer is now
2527 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2528 exhibit the required behaviour on the x86 platform. (thanks to
2529 Peter van Eynde, Eric Marsden and Bruno Haible)
2530 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2531 even for difficult arguments. (reported by Peter Graves)
2532 * fixed bug 141a: the backquote printer now descends quoted
2534 * fixed another bug in backquote printing: no more destructive
2535 modification of the form's list structure. (reported by Brian
2537 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2538 move between its address being taken and the call to
2539 interrupt_thread, fixing a crashing race condition.
2540 * the SB-POSIX contrib implementation has been adjusted so that it
2541 no longer exhibits ridiculously poor performance when constructing
2542 instances corresponding to C structs.
2544 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2545 * minor incompatible change: the sb-grovel contrib now treats C
2546 structures as alien (in the sense of SB-ALIEN) objects rather than
2547 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2548 has implications for memory management of client code
2549 (sb-grovel-returned objects must now be manually managed) and for
2550 type safety (alien objects now have full types).
2551 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2552 used to control emission of compiler diagnostics, rather than the
2553 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2554 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2555 quality should be considered deprecated.
2556 * install.sh now installs the user manual as well
2557 * (not quite a new documentable feature, but worth considering in
2558 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2559 beginnings of a semantically meaningful condition hierarchy is
2560 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2562 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2563 designator as the defaults argument.
2564 * fixed bug: Displaced arrays whose displaced-to array has become
2565 too small now cause ARRAY-DIMENSION to signal an error, providing
2566 for safer bounds-checking. (reported by Bruno Haible)
2567 * fixed bug: DEFCLASS slot definitions with identical :READER and
2568 :WRITER names now signal a reasonable error. (reported by Thomas
2570 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2572 * fixed bug: Invalid slot specification errors now print correctly.
2573 (thanks to Zach Beane)
2574 * fixed bug 320: Shared to local slot value transfers in class
2575 redefinitions now happen corrently from superclasses as
2576 well. (reported by Bruno Haible)
2577 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2579 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2580 improper lists correctly. (reported by Bruno Haible)
2581 * fixed bug 313: source-transform for <fun-name> was erroneously
2582 applied to a call of a value of a variable with name <fun-name>.
2583 (reported by Antonio Menezes Leitao)
2584 * fixed bug 307: The obsolete instance protocol ensures that
2585 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2586 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2587 remove dead unknown-values globs from the middle of the stack.
2588 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2589 easier to resume long computations after using *BREAK-ON-SIGNALS*
2590 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2591 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2592 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2593 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2594 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2595 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2597 * fixed a (fairly theoretical) bug in string printing: if
2598 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2599 does not have array-element-type equal to the most general string
2601 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2602 function name. (thanks to Nikodemus Siivola)
2603 * fixed bug: compile-time format string checker failed on
2604 non-closed ~{. (reported by Thomas F Burdick)
2605 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2606 don't warn on legal loop code involving more than one aggregate
2607 boolean. (thanks to Nikodemus Siivola)
2608 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2609 in keyword position to MAKE-PACKAGE was not being reported as
2611 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2612 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2614 * fixed bugs 280 and 312: the checking for multiple definitions in a
2615 file is less likely to become confused by uses of inline
2617 * fixed bug: the #S reader macro performs the keyword coercion
2618 specified for slot names. (reported by Kalle Niemitalo)
2619 * fixed bug: lambda lists may contain symbols whose names start with
2620 & but are not lambda-list-keywords; their occurrence triggers a
2622 * fixed bug 321: define-method-combination argument lambda lists do
2623 not cause invalid code to be generated when &optional or &aux
2624 variables have default values. (reported by Bruno Haible)
2625 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2626 have CLOS classes; this appears also to have fixed reported
2627 instability in stack exhaustion detection.
2628 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2629 MUFFLE-WARNING when no associated restart is present is now
2631 * optimization: rearranged the expansion of various defining macros
2632 so that each expands into only one top-level form in a
2633 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2635 * optimization: used a previously little-used slot in symbols to
2636 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2638 * fixed some bugs revealed by Paul Dietz' test suite:
2639 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2641 ** Fixed an optimization bug related to inheritance of initforms
2642 from local to shared slots.
2643 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2644 ** CAST optimizer forgot to flush argument derived type.
2645 ** print/read consistency on floats is now orders of magnitude
2646 more likely. (thanks also to Bruno Haible for a similar report
2648 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2649 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2650 for objects of type REAL. Make it so.
2651 ** SXHASH is specified (infelicitously) to respect similarity,
2652 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2653 it so. (thanks to Markus Ziegler)
2654 ** on the Alpha, the compiler succeeds in compiling functions
2655 returning a known number of arguments greater than 63.
2656 ** fixed handling of invalid NIL arguments in keyword position
2658 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2660 ** provided a readably-printable representation for RANDOM-STATE
2662 ** ensured that pathnames, where they have a namestring, always
2663 print using #P"..." syntax.
2665 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2666 * Support for the forthcoming 2.0 version of the NetBSD kernel
2667 running on x86 hardware has been added. (thanks to Perry
2668 E. Metzger most immediately, and others for their past work)
2669 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2670 current release version; SBCL's OpenBSD support had been broken
2671 since about the time of OpenBSD's switch to ELF binary format.)
2672 * [placeholder for DX summary]
2673 ** user code with &REST lists declared dynamic-extent, under high
2674 speed or space and low safety and debug optimization policy.
2675 * The manual has been converted to Texinfo format and the debugger
2676 chapter from the cmucl manual has been added.
2677 * A facility has been added to extract documentation strings from
2678 sbcl and store them as Texinfo-formatted snippets for inclusion in
2679 the manual (via Texinfo's @include directive)
2680 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2681 the test case to Dave Roberts)
2682 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2683 pointers. (reported by Sean Ross)
2684 * bug fix: PROFILE output is printed nicely even for large numerical
2685 values. (thanks to Zach Beane)
2686 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2687 greater than 32 handle EOF correctly.
2688 * bug fix: on X86 an immediate argument of the IMUL instruction is
2689 correctly printed in disassembly. (thanks to Lutz Euler)
2690 * bug fix: class slots in redefined classes preserve their old
2691 values. (thanks to Bruno Haible and Nikodemus Siivola)
2692 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2693 succeeds. (reported by Marco Baringer)
2694 * fixed some bugs revealed by Paul Dietz' test suite:
2695 ** READ-SEQUENCE now works on ECHO-STREAMs.
2696 ** RATIONALIZE works more according to its specification. (thanks
2699 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2700 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2701 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2702 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2703 should matter to you only if you rebind the printer control
2704 variables and then find you want different bindings in the
2705 debugger than in the ordinary execution of your program.)
2706 * The runtime build system has been tweaked to support building
2707 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2708 assembler and linker. (thanks to Nikodemus Siivola)
2709 * Unbound, undefined, undeclared variables now trigger full
2710 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2711 more often programmer error than deliberate exploitation of undefined
2713 * optimization: the hash algorithm for strings has changed to one
2714 that is less vulnerable to spurious collisions. (thanks to Juho
2716 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2717 needless bounds checking. (thanks to Juho Snellman)
2718 * optimization: implemented multiplication as a modular
2719 (UNSIGNED-BYTE 32) operation on the PPC backend.
2720 * fixed some bugs revealed by Paul Dietz' test suite:
2721 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2723 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2724 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2725 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2727 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2729 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2731 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2732 their output stream on EOF from read.
2733 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2734 have been read to end-of-file.
2735 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2737 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2738 description of determination of which consecutive characters
2740 ** Printing the "Space" character with escaping on now yields "#\\ ",
2741 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2742 ** Reading floating-point numbers with *READ-BASE* set to a number
2743 less than 10 works correctly.
2744 ** Reading floating-point numbers with *READ-BASE* set to a number
2745 more than 10 works correctly.
2746 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2747 the readtable currently in effect.
2749 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2750 * minor incompatible change: parsing of namestrings on a physical
2751 (Unix) host has changed; numbers after the final #\. in a
2752 namestring are no longer interpreted as a version field. This is
2753 intented to be largely invisible to the user, except that the
2754 meaning of the namestring "*.*.*" has changed: it now refers to a
2755 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2756 should usually be replaced by
2757 (make-pathname :name :wild :type :wild :version :wild)
2758 with the added benefit that this is more likely to be portable.
2759 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2760 option to OPEN now signals an error if the file being opened
2761 exists; this may have an impact on existing code.
2762 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2763 signals received, on the PowerPC platforms (both Linux and
2764 Darwin). (thanks to Pierre Mai for pointing out the location of
2766 * several fixes on OS X: The system now builds and runs cleanly on
2767 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2768 (thanks to Brian Mastenbrook)
2769 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2770 second-resolution: integer multiples of 1/3600 between -24 and 24.
2771 (thanks to Vincent Arkesteijn)
2772 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2773 type when called with 1 argument; PEEK-CHAR checked type of
2774 PEEK-TYPE only after having read first character from a
2775 stream. (reported by Peter Graves)
2776 * bug fix: the garbage collector now has much better locality
2777 behaviour, and in particular no longer treats all memory as being
2778 exhausted when many small objects point to each other in a deeply
2780 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2781 recognized as being TYPEP their class.
2782 * bug fix: the PUSHNEW documentation string has been corrected.
2783 (thanks to Vincent Arkesteijn)
2784 * bug fix: defaulting of the value for the last of an atypically
2785 large number of multiple values being bound was not being
2786 performed correctly on the Alpha or PPC platforms
2787 * optimization: implemented multiplication as a modular
2788 (UNSIGNED-BYTE 32) operation on the x86 backend.
2789 * optimization: SEARCH on simple-base-strings can now be open-coded.
2790 (see also contrib/compiler-extras.lisp for inspiration for
2791 teaching the compiler about the Boyer-Moore algorithm).
2792 * value, returned by MAX (and MIN) called with several EQUALP, but
2793 not EQL, arguments now does not depend on compiler settings.
2794 * fixed some bugs revealed by Paul Dietz' test suite:
2795 ** in stack analysis liveness information is propagated from
2796 non-local entry points.
2797 ** pathwise CAST removing failed when the CAST node did not start
2799 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2800 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2802 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2803 host is already defined.
2804 ** RENAME-FILE works on streams instead of signalling an internal
2806 ** PEEK-CHAR uses the current readtable when determining whether
2807 or not a character is whitespace.
2808 ** MERGE-PATHNAMES handles the case when the pathname does not
2809 specify a name while the default-pathname specifies a version.
2810 ** Pathnames now stand a better chance of respecting print/read
2812 ** Attempting to use standardized file system operators with a
2813 pathname with invalid :DIRECTORY components signals a
2815 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2817 ** DIRECTORY on logical pathnames is more correct.
2818 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2819 signal a TYPE-ERROR if their argument is not a stream.
2820 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2821 designator argument does not designate a stream.
2822 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2823 examining the synonym.
2824 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2826 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2827 element-type larger than ([UN]SIGNED-BYTE 32).
2829 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2830 * When built with the :SB-FUTEX feature, threaded builds now take
2831 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2832 for faster/more reliable mutex and condition variable support.
2833 * Incompatible change (but one you probably shouldn't have been using
2834 anyway): the interface and code for arbitrating between multiple
2835 threads in the same user session has been redesigned.
2836 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2837 error when called without an explicit environment argument.
2838 (thanks to Nikodemus Siivola)
2839 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2840 confused about their position. (thanks to Adam Warner and Gerd
2842 * bug fix: Pretty printing backquoted forms with unquotations in the
2843 argument list position of various code constructs such as LAMBDA
2844 now works correctly. (reported by Paul Dietz)
2845 * bug fix: Pretty printing unquotations no longer loses all
2846 stream position information.
2847 * optimization: performance of string output streams is now less
2848 poor for multiple small sequence writes.
2849 * optimization: performance of CSUBTYPEP in the presence of complex
2850 expressions involving CONS and NOT many times has been improved.
2851 (reported by Paul Dietz)
2852 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2854 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2855 streams for the REPL, for the debugger, and so on. (thanks to
2857 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2858 * fixed some bugs revealed by Paul Dietz' test suite:
2859 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2860 is ignored if it is too small, rather than propagating through
2861 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2862 ** extremely complex negations of CONS types were not being
2863 sufficiently canonicalized, leading to inconsistencies in
2865 ** VALUES tranformer lost derived type.
2867 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2868 * fixed a bootstrapping bug: the build process no longer assumes
2869 that the various BOOLE-related constants have the same value in
2870 host and target lisps. (noted by Paul Dietz' test suite on an
2871 SBCL binary built from CLISP)
2872 * The system can now be dynamically linked on the MIPS platform,
2873 which enables dynamic loading of foreign code from Lisp. (thanks
2874 to Ralf Baechle for discussions on the MIPS ABI)
2875 * The system now records debugging information for its own source
2876 files in a filesystem-position-independent manner, relative to
2877 the "SYS" logical host.
2878 * fixed a compiler bug: MV-LET convertion did not check references
2879 to the "max args" entry point. (reported by Brian Downing)
2880 * tweaked disassembly notes to be less confident about proclaiming
2881 some instruction as an LRA. (thanks to Brian Downing)
2882 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2883 now each have their own history, command character, and other
2884 characteristics. (thanks to David Lichteblau)
2885 * fixed some bugs revealed by Paul Dietz' test suite:
2886 ** compiler failure in compiling LOGAND expressions including a
2888 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2889 shift greater than 32.
2890 ** FLUSH-DEST did not mark blocks for type check regeneration.
2891 ** HANDLER-CASE failed to accept declarations in handler clauses
2892 in some circumstances.
2894 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2895 * New code in contrib/sb-introspect (still probably not entirely
2896 stable yet) provides some support for smart Lisp development
2897 environments like SLIME.
2898 * The conditions signalled for errors occurring when loading .fasl
2899 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2900 in a way which should help ASDF recover gracefully.
2901 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2902 stuff has been cleaned up. If you code contrib/ stuff, this might
2903 affect you, and you can look at contrib/README, contrib/STANDARDS,
2904 and/or the 0.8.4.27 diff to check.
2905 * In full calls the compiler now does not generate checks for declared
2906 argument types for all arguments.
2907 * various threading fixes
2908 ** and some experimental patches which didn't make it into
2909 the main tree for this release, but which are shipped in
2910 contrib/experimental-thread.patch as a possible fix for some
2911 failures (deadlock, spinning...) in GC-intensive multithreaded
2913 * fixed PPC build problem (source code incompatibility of different
2914 library versions): added offsetof() hackery which attempts to divine
2915 where glibc maintainers put uc_mcontext today
2916 * fixed bug 282: compiler does not trust type assertions while passing
2917 arguments to a full call.
2918 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2919 &OPTIONAL VALUES type parameter.
2920 * fix bug 214: algorithm for noting rejected templates is now more
2921 similar to that of template seletion. (also reported by rydis on
2923 * fixed bug 141b: printing backquoted information readably and prettily
2924 inserts a space where necessary.
2925 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2926 (CHARACTER 10) are now reported as errors, rather than propagated
2927 as unknown types. (reported by piso on #lisp)
2928 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2929 with values NIL and :ERROR. (thanks to Milan Zamazal)
2930 * fixed bug 191c: CLOS now does proper keyword argument checking as
2931 described in CLHS 7.6.5 and 7.6.5.1.
2932 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2933 longer raise an error; further, using a list as a for-as-arithmetic
2934 counter now raises a meaningful error.
2935 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2936 now understood by sequence creation functions such as MAKE-SEQUENCE
2938 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2939 a STRING-INPUT-STREAM.
2940 * compiler enhancement: SIGNUM is now better able to derive the type
2942 * type declarations inside WITH-SLOTS are checked. (reported by
2944 * fixed some bugs revealed by Paul Dietz' test suite:
2945 ** incorrect optimization of TRUNCATE for a positive first
2946 argument and negative second.
2947 ** compiler failure in let-convertion during flushing dead code.
2948 ** compiler failure while deriving type of TRUNCATE on an
2949 interval, containing 0.
2950 ** ASH of a negative bignum by a negative bignum count now returns
2952 ** intersection of CONS types now canonicalizes properly, fixing
2953 inconsistencies in SUBTYPEP.
2955 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2956 * incompatible change: The --disable-debugger command line
2957 option now clobbers the debugger at a more fundamental
2958 level, by redefining #'INVOKE-DEBUGGER instead of by
2959 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2960 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2961 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2962 enter the debugger REPL and then suffer recursive errors
2963 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2964 while under the new system, BREAK in --disable-debugger mode
2965 terminates the system just as an unhandled error would.
2966 * fixed compiler performance when processing loops with a step >1;
2967 * bug fix: DOCUMENTATION now retrieves generic function
2968 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2969 support has been systematized, and now supports the methods
2970 specified by ANSI, along with a default method and a method for
2971 slot documentation. (reported by Nathan Froyd)
2972 * bug fix: effective methods associated with a generic function are
2973 no longer cached over a change of that generic function's method
2974 combination. (reported by Andreas Fuchs)
2975 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2976 names a non-existent directory. (thanks to Andreas Fuchs)
2977 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2978 the PPC platform, lead to stack corruption; this has been fixed.
2979 (reported by Rainer Joswig)
2980 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2981 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2982 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2983 arithmetic in general, is now much more reliable on the PPC
2985 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2986 platform now returns the right answer.
2987 * optimization: restored some effective method precomputation in
2988 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2989 precomputation is now tunable.
2990 * optimization: compiler-internal data structure use has been
2991 reviewed, and changes have been made that should improve the
2992 performance of the compiler by about 20%.
2993 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2994 simple-base-strings and simple-bit-vectors is improved.
2995 * optimization: the optimization of 32-bit logical and arithmetic
2996 functions introduced in version 0.8.3 on the x86 has been
2997 implemented on the mips, ppc and sparc platforms; an
2998 implementation of the same facility, but for 64-bit arithmetic,
2999 has been added for the alpha.
3000 * microoptimization: the compiler is better able to make use of the
3001 x86 LEA instruction for multiplication by constants.
3002 * bug fix: in some situations compiler did not report usage of
3003 generic arithmetic in (SPEED 3) policy.
3004 * bug 145b fix: compiler used wrong type specifier while converting
3005 MEMBER-types to numeric.
3006 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3008 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3009 index argument now works properly on the Alpha platform.
3010 * bug fix: floating point exception treatment on the Alpha platform
3012 * bug fix: FILE-POSITION works much better on string input and
3013 output streams. (thanks to Nikodemus Siivola)
3014 * bug fix: many threading/garbage collection symptoms sorted.
3015 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3016 might be pseudo-atomic.
3017 * internal change: Stopping for GC is now done with signals not
3018 ptrace. GC is now done in whichever thread wanted it, instead of
3020 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3022 * bug fix: result form in DO is not contained in the implicit
3024 * incompatible change: ICR structure is changed; the value part of
3025 CONTINUATION is now called LVAR; corresponding functions are
3026 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3027 * added type deriver for ISQRT (thanks to Robert E. Brown).
3028 * bug fix: better support for loading from the command line when an
3029 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3031 * fixed some bugs revealed by Paul Dietz' test suite:
3032 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3033 ** ROUND and FROUND now give the right answer when given very
3034 small float arguments.
3035 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3037 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3038 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3039 ** LCM should return a non-negative integer.
3040 ** PARSE-INTEGER returned the index of a terminator instead of the
3041 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3042 ** PARSE-INTEGER returned an incorrect index being applied to a
3044 ** LCM with two arguments of 0 returns 0 rather than signalling
3046 ** unsigned addition of a 32-bit constant with the high bit set no
3047 longer causes an internal compiler error on the x86.
3048 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3049 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3050 with negative last argument.
3051 ** byte specifiers with zero size and position no longer cause
3052 an error during type derivation.
3053 ** bignum multiplication on the Alpha platform now returns the
3055 * porting: The system now builds on SuSE AMD64, although it still
3056 generates a 32-bit binary.
3057 * .fasl file incompatibility: The fasl file version number has
3058 been incremented (because of the changes to internal compiler
3059 data structures referred to above).
3061 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3062 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3063 more accurately, on the Darwin kernel running on PowerPC hardware.
3064 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3065 * Compiler code deletion notes now signal a condition of type
3066 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3067 an associated MUFFLE-WARNING restart.
3068 * The compiler now performs limited argument count validation of
3069 constant format strings in FORMAT, and where appropriate in ERROR,
3070 CERROR and WARN. (thanks to Gerd Moellmann)
3071 * New ASDF-INSTALL contrib can be used for automatic download and
3072 installation of third-party Lisp code from CCLAN or other sites
3074 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3075 which forces another thread to execute a function supplied by the
3077 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3078 now accept and act upon their :ELEMENT-TYPE keyword argument.
3079 (reported by Martin Atzmueller, Edi Weitz)
3080 * bug fix: FILE-POSITION now accepts position designators up to
3081 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3082 is the greater. (thanks to Patrik Nordebo)
3083 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3084 Kalle Olavi Niemitalo)
3085 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3086 printable. (reported by Eric Marsden)
3087 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3088 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3089 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3090 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3091 (thanks to Stig Sandoe)
3092 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3093 UNREAD-CHAR now correctly includes the unread character in the
3094 target sequence. (thanks to Gerd Moellmann)
3095 * bug fix in threaded builds: the system can now be suspended and
3096 resumed by shell job control with minimal disruption.
3097 * bug fixes in times and timezones >2038AD
3098 * better handling of "where is GNU make?" problem in build scripts
3099 (thanks to Nikodemus Siivola)
3100 * new optimization: inside a named function any reference to a
3101 function with the same name is considered to be a self-reference;
3102 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3103 optimization quality.
3104 * new optimization on x86: logical functions and + now have
3105 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3106 used when the result is truncated to 32 bits.
3107 * VALUES declaration is partially enabled.
3108 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3109 * fixed some bugs revealed by Paul Dietz' test suite:
3110 ** The system now obeys the constraint imposed by
3111 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3112 types form a lattice under type intersection.
3113 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3114 ** ASSOC now ignores NIL elements in an alist.
3115 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3116 and (1+ MOST-POSITIVE-FIXNUM) answers.
3117 ** The addition of a method with invalid qualifiers to a generic
3118 function does not cause an error to be signalled immediately;
3119 a warning is signalled, and the error is generated only on
3120 calling the generic function.
3121 * changed .fasl file version number, in part to add type codes for
3122 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3123 obscure ANSI requirements
3125 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3126 * fixed bug 148: failure to inline-expand a local function left
3127 garbage, confusing the compiler.
3128 * fixed bugs 3cd: structure slot readers perform type check if the
3129 slot can have an invalid value (i.e. it is either not initialized
3130 or can be written with a less specific slot writer).
3131 * bug fix: the compiler now traps array references to elements off
3132 the end of an array; previously, the bounds checking in some
3133 circumstances could go off-by-one.
3134 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3136 * type declarations for array element types now obey the description
3137 on the CLHS page "Declaration TYPE", as per discussions on
3138 sbcl-help around 2003-05-08. This means that a declaration
3139 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3140 declaration, all references to BAR will be asserted or assumed
3141 (with THE, so dependent on compiler policy) to involve objects of
3142 type FOO. Note that no such declaration is implied in
3143 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3144 * declared types of functions from the "Conditions"
3145 chapter. (reported by Paul Dietz)
3146 * bug fix: CERROR accepts a function as its first argument.
3147 * bug fix: NTH an NTHCDR accept a bignum as index
3148 arguments. (reported by Adam Warner)
3149 * optimization: character compare routines now optimize comparing
3150 against a constant character. (reported by Gilbert Baumann)
3151 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3152 argument now works properly on the MIPS platform.
3153 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3154 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3155 declared to have a functional type, does not cause an error
3157 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3158 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3159 * fixed bug: if last continuation of a deleted block has a
3160 destination, this destination should be deleted too. (reported by
3162 * fixed a bug in the bootstrap process: the host compiler's values
3163 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3164 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3165 test case from Patrik Nordebo)
3166 * improved the ability of the disassembler on the PPC platform to
3167 provide helpful disassembly notes.
3168 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3169 the class in more cases than previously.
3170 * bug fix: FILE-POSITION now understands :START and :END for
3171 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3172 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3173 8) data. (thanks to David Lichteblau)
3174 * bug fix: it is possible to add a method to a generic function
3175 without lambda list.
3176 * bug fix: reader failed to signal END-OF-FILE inside an
3177 object representation. (reported by Nikodemus Siivola)
3178 * fixed some bugs revealed by Paul Dietz' test suite:
3179 ** LAST and [N]BUTLAST should accept a bignum.
3180 ** condition slot accessors are methods.
3181 ** (VECTOR NIL) is a subtype of STRING.
3183 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3184 * minor incompatible change: some nonsensical specialized lambda
3185 lists (used in DEFMETHOD) which were previously ignored now signal
3187 * minor incompatible change: the system is now aware of the types of
3188 variables in the COMMON-LISP package, and will signal errors for
3189 most violations of these type constraints (where previously they
3190 were silently accepted).
3191 * minor incompatible change: COMPILE-FILE now uses the freedom
3192 afforded (ANSI 3.2.2.3) to use derived function types for
3193 functions defined in the same file. This also permits the system
3194 to warn on static type mismatches and function
3195 redefinition. (Currently it does not work with high DEBUG level.)
3196 * minor incompatible change: VALUES declaration is disabled.
3197 * When issuing notes, the compiler now signals a condition of type
3198 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3199 restart for use in user handlers. It is expected that the
3200 COMPILER-NOTE condition will eventually become a condition
3201 supertype to a hierarchy of note types, which will then be
3202 handleable in a similar fashion. However, at the moment, no such
3203 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3204 but it's an implementation detail, not a classification for the
3206 * Changes in type checking closed the following bugs:
3207 ** type checking of unused values (192b, 194d, 203);
3208 ** template selection based on unsafe type assertions (192c, 236);
3209 ** type checking in branches (194bc).
3210 * A short form of VALUES type specifier has ANSI meaning (it has
3211 increased the number of situations when SBCL cannot perform type
3213 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3214 keywords or constants is permissible.
3215 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3216 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3217 classes. (thanks to Antonio Martinez)
3218 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3219 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3220 argument to a pretty-print stream. Instead, it leaves any such
3221 operations to DESCRIBE-OBJECT methods.
3222 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3224 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3225 lambda lists. (thanks to David Lichteblau)
3226 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3227 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3228 (thanks to Gerd Moellmann)
3229 * fixed bug 246: increased compilation speed of long
3230 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3232 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3234 * DEFCONSTANT now throws a condition of type
3235 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3236 constant to a non-EQL value; CONTINUE and ABORT restarts
3237 respectively change and preserve the value.
3238 * fixed bug 63: The code walker, part of the implementation of CLOS,
3239 is now better at handling symbol macros.
3240 * bug fix: There is no longer an internal implementation type named
3241 CL:LENGTH. (reported by Raymond Toy)
3242 * bug fix: In macro-like defining macros/special operators the
3243 implicit block does not enclose the lambda list.
3244 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3245 enclosed in parentheses) are not suitable as type specifiers, and
3246 their use properly signals an error now.
3247 * bug fix: An argument count mismatch for a type specifier in code
3248 being compiled no longer causes an unhandled error at compile
3249 time, but signals a compile-time warning.
3250 * fixed simple vector readable printing
3251 * bug fix: DESCRIBE takes more care over whether the class
3252 precedence list slot of a class is bound before accessing it.
3253 (reported by Markus Krummenacker)
3254 * bug fix: FORMATTER can successfully compile pretty-printer format
3255 strings which use variants of the ~* directive inside.
3256 * bug fix: SEARCH now applies its TEST predicate to the elements of
3257 the arguments in the correct order. (thanks to Wolfhard Buss)
3258 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3259 in type inference. (thanks to Robert E. Brown)
3260 * bug fix: Reading in symbols with an explicit package name of ""
3261 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3262 * fixed some bugs revealed by Paul Dietz' test suite:
3263 ** NIL is now allowed as a structure slot name.
3264 ** Arbitrary numbers, not just REALs, are allowed in certain
3265 circumstances in LOOP for-as-arithmetic clauses.
3266 ** Multiple class redefinitions before slot access no longer
3267 causes a type error.
3268 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3269 association between the name and a class.
3270 ** Generic functions with non-standard method-combination and over
3271 five methods all of which return constants no longer return NIL
3272 after the first few invocations. (thanks to Gerd Moellmann)
3273 ** CALL-NEXT-METHOD with no arguments now passes the original
3274 values of the arguments, even in the presence of assignment.
3275 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3277 ** DISASSEMBLE works with closures and funcallable instances.
3278 ** ADD-METHOD now returns the generic function, not the new method.
3279 ** FIND-METHOD signals an error if the lengths of the specializers
3280 is incompatible with the generic function, even if the ERRORP
3282 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3283 which its argument is a member.
3284 ** DEFCLASS only redefines the class named by its class-name
3285 argument if that name is the proper name of the class;
3286 otherwise, it creates a new class.
3287 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3288 of the UNBOUND-SLOT condition to the name of the slot.
3289 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3290 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3291 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3292 SLOT-MAKUNBOUND in the specified fashion.
3294 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3295 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3296 cross-compilation host. As a consequence, we can now bootstrap our
3297 way up to SBCL starting with a bare gcc toolchain and human-readable
3298 source code (first the source to CLISP, then the source to SBCL).
3299 * A contributed module containing a partial implementation of the
3300 simple-streams interface has been included. (thanks to Rudi
3302 * A contributed module implementing the RFC1321 Message Digest
3303 Algorithm, known as MD5, has been included.
3304 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3305 no longer has any effect, as the code controlled by this feature
3306 has been deleted. (As far as we know, no-one has ever built using
3307 this feature, and its semantics were confused in any case).
3308 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3309 work on conditions (as required by the ANSI specification),
3310 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3311 expected behaviour on conditions. Users should note, however,
3312 that such behaviour is not required by the ANSI specification,
3313 and so use of this behaviour may render their code unportable.
3314 * fixed some bugs revealed by Paul Dietz' test suite:
3315 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3317 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3318 ** SXHASH on condition objects no longer returns NIL.
3319 ** :ALLOCATION :CLASS slots are better treated; their values are
3320 updated on class redefinition, and initforms inherited from
3321 superclasses are applied.
3322 ** REMOVE-METHOD returns its generic function argument even when
3323 no method was removed.
3324 ** SHARED-INITIALIZE now initializes the values of the requested
3325 slots, including those with :ALLOCATION :CLASS.
3326 ** ALLOCATE-INSTANCE now works on structure classes defined via
3327 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3329 ** SLOT-EXISTS-P now works on conditions, as well as structures
3331 ** MAKE-LOAD-FORM now has the required methods on
3332 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3333 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3334 keyword, and now implements the SLOT-NAMES argument.
3335 ** methods with &OPTIONAL arguments no longer allow too many
3336 arguments to be passed in the call without error.
3337 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3338 option is consistent with the required arguments of the generic
3339 function lambda list.
3340 * bug fix: REQUIRE accepts a string designator. (Thanks to
3342 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3343 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3344 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3345 * bug fix: The compiler now checks for duplicated variables in macro
3347 * bug fix: SETQ on globals returns the correct value.
3348 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3349 not a COMPILER-ERROR (followed by some other strange error on
3350 choosing the CONTINUE restart).
3351 * bug fix: make.sh and friends are now more consistent in the way that
3352 they look for GNU "make".
3354 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3355 * experimental native threads support (on x86 Linux >=2.4 only).
3356 This is not compiled in by default: you need to add :SB-THREAD to
3357 the target features. See the "Beyond ANSI" chapter of the manual
3359 * fix for longstanding nonANSIism: The old distinction between
3360 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3361 The return value from CL:FIND-CLASS is now a CLOS class, and
3362 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3363 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3364 * An interface to the MetaObject Protocol, as described in Kiczales,
3365 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3366 MIT Press, 1991, is available from the SB-MOP package.
3367 * incompatible change: the SB-PCL package should now be considered
3368 a private implementation detail, and no longer a semi-private MOP
3370 * minor incompatible change: due to rearrangement for threads, the
3371 control stack and binding stack are now allocated at arbitrary
3372 addresses instead of being hardcoded per-port. Users affected by
3373 this probably have to be doing advanced things with shared
3374 libraries, and will know who they are.
3375 * minor incompatible change: Previously, all --eval forms used were
3376 processed with READ before any of them were processed with EVAL.
3377 Now each --eval form is processed with both READ and EVAL before
3378 the next --eval form is processed. (Thus package operations like
3379 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3380 work as the user might reasonably expect.)
3381 * minor incompatible change: *STANDARD-INPUT* is now only an
3382 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3384 * minor incompatible change: Y-OR-N-P is now character-oriented,
3385 not line oriented. Also, YES-OR-NO-P now works without errors.
3386 (thanks to Antonio Martinez)
3387 * sb-aclrepl module improvements: an integrated inspector, added
3388 repl features, and a bug fix to :trace command.
3389 * Known functions, which cannot be open coded by the backend, are
3390 considered to be able to check types of their arguments. (fixing
3391 a bug report by Nathan J. Froyd)
3392 * fixed a bug in computing method discriminating functions: It is
3393 now possible to define methods specialized on classes which have
3394 forward-referenced superclasses. (thanks to Gerd Moellmann)
3395 * fixed evaluation order in optional entries (reported by Gilbert
3397 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3398 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3399 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3400 required-by-AMOP NAME argument, as well as CLASS and
3401 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3402 * fixed bug 20: DEFMETHOD can define methods using names that are
3403 not the proper names of classes to designate class specializers.
3404 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3405 Unix file descriptors, instead of blowing up. (thanks to Antonio
3407 * Garbage collection refactoring: user-visible change is that a
3408 call to the GC function during WITHOUT-GCING will not do garbage
3409 collection until the end of the WITHOUT-GCING. If you were doing
3410 this you were probably losing anyway.
3411 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3412 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3413 TYPEP the latter but not the former.
3414 * The compiler issues a full WARNING for calls to undefined functions
3415 with names from the CL package.
3416 * MAP-INTO for a vector destination is open coded. (reported by
3417 Brian Downing on c.l.l)
3418 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3419 documentation string.
3420 * fixed some bugs revealed by Paul Dietz' test suite:
3421 ** COPY-ALIST now signals an error if its argument is a dotted
3423 ** Condition slots are now accessed more correctly in the presence
3424 of multiple initargs for a given slot.
3425 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3426 exclude restarts of the same name associated with a different
3428 ** DEFCLASS of forward-referenced classes with another
3429 forward-referenced class in the superclasses list no longer
3431 ** Condition slots are now initialized once each, not multiple
3432 times. (thanks to Gerd Moellmann)
3433 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3435 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3436 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3437 arguments contain duplicated elements.
3438 ** RESTART-CASE understands local macros.
3439 ** RESTART-CASE associates exactly its own restarts with a condition.
3440 ** ENDP in safe mode checks its argument to be of type LIST.
3441 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3442 in question is unbound.
3443 ** Optimized MAKE-INSTANCE functions no longer cause internal
3444 assertion failures in the presence of duplicate initargs.
3445 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3446 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3447 propagated even in the ctor optimized implementation of
3449 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3451 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3452 * a better implementation of SXHASH on (simple) bit vectors,
3453 measured both in execution speed and in distribution of results
3454 over the positive fixnums, has been installed. Likewise, a better
3455 implementation of EQUAL for simple bit vectors is now available.
3456 * fixed CEILING optimization for a divisor of form 2^k.
3457 * fixed bug 240 (emitting extra style warnings "using the lexical
3458 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3459 by Antonio Martinez)
3460 * fixed SXHASH, giving different results for NIL depending on type
3461 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3462 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3463 variable. (found by Rolf Wester)
3464 * SBCL does not ignore type declarations for special
3465 variables. (reported by rif on c.l.l 2003-03-05)
3466 * some bug fixes in contrib/sb-aclrepl/
3467 * fixed some bugs revealed by Paul Dietz' test suite:
3468 ** a bug in the CONS type specifier, whereby the CAR and CDR
3469 types got intertwined, has been fixed;
3470 ** the type system is now able to reason about the interaction
3471 between INTEGER and RATIO types more completely;
3472 ** APPEND, [N]REVERSE and NRECONC check that those their
3473 arguments, which must be proper lists, are really so;
3474 ** An array specialized to be unable to hold elements has been
3475 implemented, as required -- yes, really -- by ANSI;
3476 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3477 on malformed property lists;
3479 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3480 * incompatible packaging change: in line with Unix convention,
3481 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3482 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3483 * REQUIRE and PROVIDE are now optionally capable of doing something
3484 useful. See the documentation string for REQUIRE.
3485 * infrastructure for a managed SBCL contrib system: contributed
3486 modules in this release include:
3487 ** the ASDF system definition facility;
3488 ** an interface to the BSD Sockets API;
3489 ** an ACL-like convenience interface to the repl;
3490 (thanks to Kevin Rosenberg)
3491 ** an implementation of ROTATE-BYTE, with efficient implementation
3493 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3494 gives a closer approximation to the right answer than previously.
3495 (thanks to Raymond Toy)
3496 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3497 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3498 optional environment arguments, as required by ANSI.
3499 * fixed bugs in other functions taking environment objects, allowing
3500 calls with an explicit NIL environment argument to be compiled
3502 * fixed bug 228: primary return values from
3503 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3504 COMPILE or FUNCTION.
3505 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3506 :TYPE will no longer signal errors on innocuous objects.
3507 * fixed bug 231b: SETQ is better at respecting type declarations in
3508 the lexical environment.
3509 * fixed a bug in DEFCLASS: classes named by symbols with no or
3510 unprintable packages can now be defined.
3511 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3512 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3513 * fixed compiler failure related to checking types of functions.
3514 (reported by Robert E. Brown)
3515 * the compiler is now much more consistent in its error-checking
3516 treatment of bounding index arguments to sequence functions: in
3517 (SAFETY 3) code, errors will be signalled in almost all cases if
3518 invalid sequence bounding indices are passed to functions defined
3519 by ANSI to operate on sequences.
3520 * fixed a bug in the build procedure: documentation of SBCL-specific
3521 packages is now preserved and available in the final Lisp image.
3522 * lifted FDEFINITION lookup out of loops in the implementation of
3523 many list operations. (thanks to Robert E. Brown)
3524 * fixed a bug in the reader: the #n# reader macro now works for
3525 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3526 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3527 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3528 E. Brown and Tony Martinez respectively)
3529 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3530 SLOT-BOUNDP: in particular, it is now able to optimize them much
3531 better, and is now not vulnerable to having packages renamed.
3532 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3533 always called when a slot is not present in an instance. (thanks
3535 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3536 longer signal an error on unreading a character following EOF on
3537 the previous constituent stream. (thanks to Tony Martinez)
3538 * fixed some bugs revealed by Paul Dietz' test suite:
3539 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3540 not just nonnegative fixnums;
3541 ** the logical bit-array operators such as BIT-AND now accept an
3542 explicit NIL for their "opt-arg" argument (to indicate a
3543 freshly-consed result bit-array);
3544 ** ELT now signals an error on an invalid sequence index in safe
3546 ** the type system is now cleverer about negations of numeric
3547 types, and consequently understands the BIGNUM and RATIO types
3549 ** the type system is now cleverer about the interaction between
3550 INTEGER and RATIO types: while bugs still remain, many more
3551 cases are accurately computed;
3552 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3553 if it is in the last clause;
3554 ** CONSTANTLY now correctly returns a side-effect-free function in
3556 ** DECLARE is no longer treated as a special-operator; in
3557 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3558 * incremented fasl file version number due to the change in the
3559 DEFSTRUCT-SLOT-DESCRIPTION structure.
3561 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3562 * minor incompatible change: code processed by the "interpreter" or
3563 EVAL now has a compilation optimization policy of (DEBUG 2)
3564 (changed from (DEBUG 1)) to improve debuggability of interactive
3565 development, and to allow the use of the debug RETURN command in
3567 * an experimental implementation of the RETURN command for the
3568 debugger has been included. (thanks to Frederik Kuivinen)
3569 * fixed bug 62: constraints were not propagated into a loop.
3570 * fixed bug in embedded calls of SORT (reported and investigated by
3572 * fixed some bugs revealed by Paul Dietz' test suite:
3573 ** printing and reading of arrays with some dimensions having
3574 length 0 (thanks to Gerd Moellmann);
3575 ** BOA constructor with &AUX argument without a default value does
3576 not cause a type error;
3577 ** CONSTANTP now returns true for all self-evaluating objects.
3579 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3580 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3581 accessors that are related by inheritance, as specified in the
3582 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3583 Valtteri Vuorikoski)
3584 * The compiler is now able to inline functions that were defined in
3585 a complex lexical environment (e.g. inside a MACROLET).
3586 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3588 * Support for the upcoming FreeBSD-5.0 release has been included.
3589 (thanks to Dag-Erling Smorgrav)
3590 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3591 effect when it is not in a toplevel context.
3592 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3593 stand a better chance of being correct. (thanks to Gerd
3595 * fixed bug in COERCE, which now signals an error on coercing a
3596 rational to a bounded real type which excludes the expected
3598 * The compiler is now able to derive types more accurately from the
3599 COERCE and COMPILE functions.
3600 * fixed bug 223: functional binding is considered to be constant
3601 only for symbols in the CL package.
3602 * fixed bug 231: SETQ did not check the type of a variable being set
3603 (reported by Robert E. Brown)
3604 * A new optimization for MAKE-INSTANCE has been included, fixing
3605 various bugs (including relating to :ALLOCATION :CLASS slots and
3606 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3608 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3609 ** As required by ANSI, LOOP now disallows anonymous collection
3610 clauses such as COLLECT I in conjunction with aggregate boolean
3611 clauses such as THEREIS (= I 1);
3612 ** LOOP now signals an error when any variable is reused in the
3613 same loop (including the potentially useful construct analogous
3614 to WITH A = 1 WITH A = (1+ A);
3615 ** IT is only a special loop symbol within the first clause of a
3616 conditional loop clause;
3617 ** LOOP with a typed iteration variable over a hashtable now
3618 signals a type error iff it should.
3619 * fixed some other bugs revealed by Paul Dietz' test suite:
3620 ** FILE-STREAM now names the class previously known as FD-STREAM;
3621 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3622 argument) no longer signals an error;
3623 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3624 of the slot symbol, rather than using the current package
3625 ((:CONC-NAME "") continues to intern the slot's name in the
3627 * incremented fasl file version number, because of the incompatible
3628 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3629 of the new implementation of DEFINE-COMPILER-MACRO.
3631 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3632 * Support for building SBCL for MIPS platforms running in
3633 little-endian mode has now been checked in, and basic
3634 functionality on said platforms verified.
3635 * minor incompatible change: PCL now records the pathname of a file
3636 in which methods and the like are defined, rather than its
3638 * minor incompatible change: TRUENAME now considers the truename of
3639 a file naming a directory to be the pathname with :DIRECTORY
3640 component indicating that directory.
3641 * minor incompatible change: a NAMED clause in the extended form of
3642 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3643 reason for the previous behaviour is unclear.
3644 * more systematization and improvement of CLOS and MOP conformance
3645 in PCL (thanks to Gerd Moellman and Pierre Mai):
3646 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3648 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3649 primary methods with no specializers;
3650 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3652 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3653 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3654 FORWARD-REFERENCED-CLASSes; error reporting on
3655 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3657 ** SXHASH on CLOS instances now uses a slot internal to the
3658 instance to return different numbers on distinct instances,
3659 while preserving the same return value through invocations of
3661 ** DEFMETHOD signals errors when methods with longer incongruent
3662 lambda lists are added to generic functions;
3663 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3664 CLASS, as specified in AMOP;
3665 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3666 on the order returned by the primary method for classes of
3667 class STANDARD-CLASS;
3668 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3669 * fixed some bugs shown by Paul Dietz' test suite:
3670 ** DOLIST puts its body in TAGBODY;
3671 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3673 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3674 value producing form;
3675 ** if more variables are given to PROGV than values, extra
3676 variables are bound and made to have no value;
3677 ** NSUBSTITUTE on list arguments gets the right answer with
3679 ** ELT signals an error of type TYPE-ERROR when the index argument
3680 is not a valid sequence index;
3681 ** LOOP signals (at macroexpansion time) an error of type
3682 PROGRAM-ERROR when duplicate variable names are found;
3683 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3684 ** FUNCALL of special-operators now cause an error of type
3686 ** PSETQ now works as required in the presence of side-effecting
3687 symbol-macro places;
3688 ** NCONC accepts any object as its last argument;
3689 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3691 ** loop-for-as-package does not require a package to be explicitely
3693 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3695 * fixed bug 166: compiler preserves "there is a way to go"
3696 invariant when deleting code.
3697 * fixed bug 172: macro lambda lists with required arguments after
3698 &REST arguments now cause an error to be signalled. (thanks to
3700 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3701 bug. (thanks to Matthew Danish)
3702 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3704 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3705 arguments are lexically rebound. (thanks to Gerd Moellmann and
3707 * fixed bug 194: error messages are now more informative when there
3708 is no primary method applicable in a call to a generic
3709 function. (thanks to Gerd Moellmann)
3710 * fixed bug in command line argument checking (thanks to Julian
3712 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3713 (thanks to Matthew Danish)
3714 * incremented fasl file version number, because of the
3715 SXHASH-related changes in the layout of CLOS data structures
3717 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3718 * minor incompatible change: The runtime (the Unix executable named
3719 "sbcl") is now much pickier about the .core files it will load.
3720 Essentially it now requires .core files to descend from the same
3721 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3722 as the runtime does. (The intent is to prevent the crashes which
3723 can occur, and which can even be reported as mysterious failures,
3724 when people patch the sources or change the build parameters
3725 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3726 sbcl and .core files.)
3727 * fixed bug: VALUES-LIST is no longer optimized away.
3728 * fixed bug 142: The FFI conversion of C string values to Lisp
3729 string values no longer conses excessively. (thanks to Nathan
3730 Froyd porting Raymond Toy's fix to CMU CL)
3731 * began to systematize and improve MOP conformance in PCL (thanks to
3732 Nathan Froyd, Gerd Moellman and Pierre Mai):
3733 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3735 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3736 ** FINALIZE-INHERITANCE is now called on class finalization;
3737 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3738 argument precedence order.
3739 * fixed bug 202: The compiler no longer fails on functions whose
3740 derived types contradict their declared type.
3741 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3742 so it can be non-toplevel.
3743 * The fasl file version number has changed (because of the new
3744 implementation of DEFMACRO).
3745 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3746 safe code, that any length requirement by their type-specifier
3747 argument is valid. The exceptions to this are described in bug
3749 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3750 functions now check the types of their inputs as required by ANSI.
3751 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3752 introduced symbol is DECLAREd to be SPECIAL.
3753 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3754 * fixed bug: :COUNT argument to sequence functions may be negative
3755 * fixed bug: body of DO-SYMBOLS may contain declarations
3756 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3757 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3758 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3759 symbol macro only once
3760 * fixed printing of call frame when argument list is unavailable
3761 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3762 * compiler no longer signals WARNING on unknown keyword
3765 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3766 * A beta-quality port to the mips architecture running Linux,
3767 based on the old CMUCL backend, has been made. It has been tested
3768 on a big-endian kernel, and works sufficiently well to be able to
3769 rebuild itself; it has not been tested in little-endian mode.
3770 * fixed an inconsistency between gencgc.c and purify.c which made
3771 dumping/loading .core files unreliable
3772 * fixed bug 120a: The compiler now deals correctly with IFs where
3773 the consequent is the same as the alternative, instead of
3774 misderiving the return type. (thanks to Alexey Dejneka)
3775 * fixed bug 113: Logical pathnames are now dumpable (the logical
3776 host is resolved at load-time, throwing an error if it is not
3778 * fixed bug 174: FORMAT's error message is slightly clearer when a
3779 non-printing character is used in a format directive.
3780 * fixed several bugs in compiler checking of type declarations, i.e.
3781 violations of the Python "declarations are assertions" principle
3782 (thanks to Alexey Dejneka)
3783 * fixed several bugs in PCL's error checking (thanks to Gerd
3785 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3787 * fixed bug in compilation of functions as first class values
3788 (thanks to Antonio Martinez-Shotton)
3789 * The compiler's handling TYPE-ERRORs which it can prove will
3790 inevitably happen at runtime has been cleaned up and corrected
3791 in several ways. (thanks to Alexey Dejneka)
3792 * improved argument type checking for various basic arithmetic
3793 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3794 lavished on them in the past that they can be compiled in many
3795 ways in different special cases
3796 * fixed bug 181: compiler checks validity of user supplied type
3798 * cleaned up code flushing in optimization: Function calls which
3799 should signal errors for safety purposes (e.g. which ANSI says
3800 should signal errors when their arguments are of incorrect type)
3801 are no longer optimized away.
3802 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3803 * incremented fasl file version number, because changes in the
3804 implementation of sequence functions like COERCE caused
3805 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3806 in old inline expansions) to become undefined. (Actually these
3807 changes were later undone, so we might very well be binary
3808 compatible with 0.7.7 after all, but leaving the version number
3809 incremented seemed like the simplest and most conservative
3812 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3813 * An alpha-quality port to the parisc architecture running Linux,
3814 based on the old CMUCL backend, has been made. This, even more so
3815 than the other backends, should be considered still a work in
3816 progress; known problems include that the Linux kernel in 64-bit
3817 mode does not propagate the correct sigcontext structure to
3818 userspace, and consequently SBCL on a parisc64 kernel will not
3820 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3821 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3822 suppressed.) Also now that the compiler is looking at declarations
3823 in the environment, it checks optimization declarations as well,
3824 and suppresses inlining when (> DEBUG SPEED).
3825 * More fixes have been made to treatment of floating point exception
3826 treatment and other Unix signals. In particular, floating point
3827 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3828 * The detection and handling of control stack exhaustion (infinite
3829 or very deeply nested recursion) has changed. Stack exhaustion
3830 detection is now done by write-protecting pages at the OS level
3831 and applies at all optimization settings; when found, a
3832 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3833 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3834 be caught using IGNORE-ERRORS.
3835 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3836 correctly when transforming recursive LABELS functions to LETs.
3837 (thanks to Alexey Dejneka)
3838 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3839 that are names of constants or global variables.
3840 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3841 alien routines with docstrings.
3842 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3843 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3845 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3846 (thanks to Eric Marsden)
3847 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3848 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3849 * Bug fix: The SPARC backend can now compile functions involving
3850 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3851 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3852 to a functions expecting a PATHNAME-DESIGNATOR.
3853 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3854 lambda lists. (thanks to Alexey Dejneka)
3855 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3856 functions so that EXPORTing the name of the class doesn't cause
3857 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3858 to Antonio Martinez for reporting this)
3859 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3860 constant-folded without failing an assertion. (thanks to Einar
3861 Floystad Dorum for reporting this)
3862 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3863 types are now dealt with more correctly by the compiler.
3864 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3865 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3866 behaviour analogous to RENAME-FILE. This puts its behaviour more
3867 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3869 * The fasl file version number has changed again. (because of the
3870 bug fix involving the names of PCL MAKE-INSTANCE functions)
3872 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3873 * bug fix: Floating point exceptions are treated much more
3874 consistently on the x86/Linux and PPC/Linux platforms.
3875 * Array initialization with :INITIAL-ELEMENT is now much faster for
3876 cases when the compiler cannot open code the array creation, but
3877 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3878 array accesses have also seen a speed increase.
3879 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3880 specified. (This was at the root of some bad interactions between
3881 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3883 * bug fix: Internal error arguments for undefined functions are now
3884 computed correctly on the PPC/Linux platform.
3885 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3886 Raymond Toy's patch for CMU CL)
3887 * Support for the Solaris 9 operating environment has been included
3888 (thanks to Daniel Merritt)
3889 * A very ugly but hopefully complete draft of the missing FFI chapter
3890 of the manual has been created by reformatting the corresponding
3891 CMU CL manual chapter into (currently very ugly and incoherent)
3892 DocBook and bringing it up to date for SBCL behavior. Thus, the
3893 manual is now essentially complete, at least by my extreme
3894 once-and-only-once standards, whereby it's acceptable to refer to
3895 the doc strings of SB-EXT functions as the primary documentation.
3896 * The fasl file version number has changed again, due to cleanup of
3897 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3898 is no longer a static symbol.)
3900 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3901 * SBCL now builds with OpenMCL (version 0.12) as the
3902 cross-compilation host; also, more progress has been made toward
3903 bootstrapping under CLISP.
3904 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3906 * bug 158 fixed: The compiler can now deal with integer loop
3907 increments different from 1; fixing this turned out also to fix
3909 * bug 169 fixed: no more bogus warnings about using lexical bindings
3910 despite the presence of perfectly good SPECIAL declarations (thanks
3911 to David Lichteblau)
3912 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3913 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3914 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3916 * bug 180 fixed: Method combination specifications no longer ignore
3917 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3918 * bug fix: Structure type predicate functions now check their argument
3919 count as they should.
3920 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3921 correctly. (thanks to Pierre Mai)
3922 * minor incompatible change: The --noprogrammer option is deprecated
3923 in favor of the new --disable-debugger option, which is very similar.
3924 (The major difference is that it takes effect at a slightly different
3925 time at startup, causing handling of errors in --sysinit and
3926 --userinit files will be affected differently.) The
3927 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3928 been added to allow this functionality to be controlled from ordinary
3929 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3930 maintainers, who might want to run non-interactive scripts to
3931 build SBCL cores which will later be used interactively.)
3932 * minor incompatible change: The LOAD function no longer, when given
3933 a wild pathname to load, loads all files matching that pathname.
3934 Instead, an error of type FILE-ERROR is signalled.
3936 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3937 * bug 147 fixed: The compiler preserves its block link/count
3938 invariants more correctly now so that it doesn't crash. (thanks
3940 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3942 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3943 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3944 no-value-for-this-character as NIL (as specified by ANSI).
3945 * HOST-NAMESTRING on physical pathnames now returns a string that is
3946 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3947 (thanks to Christophe Rhodes)
3948 * The Alpha port handles icache flushing more correctly. (thanks to
3950 * More progress has been made toward bootstrapping under CLISP. (thanks
3951 to Christophe Rhodes)
3952 * The fasl file format has changed again, because dynamic loading
3953 on OpenBSD (which has non-ELF object files) motivated some cleanups
3954 in the way that foreign symbols are transformed and passed around.
3955 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3956 is no longer treated as whitespace by the reader, but instead as
3957 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3958 |A
\7fB|, instead of A as it used to.
3960 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3961 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3962 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3963 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3964 this as of 0.7.1.45, but was left out of the previous news section
3965 (thanks to Dan Barlow)
3966 * SBCL now runs on the Solaris operating system on SPARC architectures
3967 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3968 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3969 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3970 * SPARC backend cleanups, allowing builds of cores optimized for V8
3971 and V9 SPARCS, and also emission of code targeted to a particular
3972 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3974 * SBCL is closer to bootstrapping under CLISP, thanks to various
3975 fixes by Christophe Rhodes.
3976 * The fasl file format has changed again, to allow the compiler's
3977 INFO database to support symbol macros.
3978 * The user manual (in doc/) is formatted into HTML more nicely.
3979 (thanks to coreythomas)
3980 * The system is smarter about SUBTYPEP relationships, especially
3981 those involving NOT types (including types such as ATOM which are
3982 represented internally using NOT types). Thus SUBTYPEP is less
3983 likely to return (VALUES NIL NIL) in general, and in particular
3984 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3986 * The fasl file format has changed again, because the internal
3987 representation of types now includes a new slot to support the new
3988 SUBTYPEP-of-NOT-types logic.
3989 * (not a change in the main branch of SBCL, but a related prototype
3990 which can hopefully be merged into the main branch of SBCL in the
3991 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3992 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3993 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3994 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3995 dispatch macro character combinations. (thanks to Alexey Dejneka)
3996 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3997 that superficially look like logical namestrings correctly.
3998 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4000 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4001 default supplied-p) for &optional and &key arguments. (thanks to
4004 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4005 * incompatible change: The compiler is now less aggressive about
4006 tail call optimization, doing it only when (> SPACE DEBUG) or
4007 (> SPEED DEBUG). (This is an incompatible change because there are
4008 programs which relied on the old CMU-CL-style behavior to optimize
4009 away their unbounded recursion which will now die of stack overflow.)
4010 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4011 for non-GENCGC systems has been increased to 20M (since that
4012 seems much closer to the likely performance optimum for modern
4013 systems than the old 4M value was)
4014 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4015 and *DEBUG-PRINT-LEVEL*
4016 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4017 of CMU CL's support for SPARC, and various endianness and other
4018 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4019 * new syntactic sugar for the Unix command line: --load foo.bar is now
4020 an alternate notation for --eval '(load "foo.bar")'.
4022 ** The system now detects stack overflow and handles it gracefully,
4023 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4024 optimization settings. (This is a good thing in general, and
4025 its introduction in this version should be particularly timely
4026 for anyone whose code fails because of suppression of tail
4028 ** The system now hunts for the C variable "environ" in a more
4029 devious way, to avoid segfaults when the C library version differs
4030 between compile time and run time. (thanks to Christophe Rhodes)
4031 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4032 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4033 ** The compiler no longer issues bogus style warnings for undefined
4034 classes in the same source file as the DEFCLASSes which defined
4035 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4037 ** fixes in CONDITION class precedence list for undefined function
4038 errors (thanks to Alexei Dejneka)
4039 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4040 correctly. (thanks to Dan Barlow)
4041 ** portability fixes aiming at bootstrapping under CLISP (thanks
4042 to Dave McDonald and Christophe Rhodes)
4043 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4044 ** fixes in type translation and and type inference (thanks to
4046 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4047 ** various fixes in the new ports (thanks to Dan Barlow)
4048 * several changes related to debugging:
4049 ** suppression of tail recursion, as noted above
4050 ** stack overflow detection, as noted above
4051 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4052 is now the default. (For some time encapsulation has been more
4053 reliable than the breakpoint-based :ENCAPSULATE NIL
4054 implementation, at least on X86 systems; and I just noticed that
4055 encapsulation also seems closer to the spirit of the ANSI
4058 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4060 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4061 up properly again. (There was a packaging bug in 0.7.0 which
4062 left their definitions in SB-SYS::LOAD-FOREIGN and
4063 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4064 vital for most things which interface to C-level interfaces,
4065 like extensions working with sockets or databases or
4066 Perl-compatible regexes or whatever, and the need to fix
4067 this bug is the main reason that 0.7.1 was released so
4069 ** DEFGENERIC is now choosier about the methods it redefines, so that
4070 reLOADing a previously-LOADed file containing DEFGENERICs does
4071 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4072 cycle now works as it should. (thanks to Alexey Dejneka)
4073 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4074 fixed by Christophe Rhodes. (He actually submitted this patch
4075 months ago, and I delayed until after 0.7.0.)
4076 ** Bug 111 (internal compiler confusion about runtime checks on
4077 FUNCTION types) was fixed by Alexey Dejneka.
4078 * Some internal cleanups (getting rid of variables which aren't
4079 needed now that the byte interpreter is gone) caused the fasl
4080 file format number to change again.
4082 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4083 * major incompatible change: The default fasl file extension, i.e. the
4084 default extension for files produced by COMPILE-FILE, has changed
4085 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4087 ** There are many changes in the implementation of the compiler.
4088 SBCL is now essentially a compiler-only implementation of ANSI
4089 Common Lisp. EVAL still "interprets" a few special cases, but
4090 almost all the interesting cases are handled by creating
4091 a LAMBDA expression, calling COMPILE on it, then calling
4092 FUNCALL on the result.
4093 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4094 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4095 Since the code is newer, there might still be some new bugs
4096 (though not as many as before Martin Atzmueller's fixes:-). But
4097 the new code is substantially simpler and clearer, and hopefully
4098 any remaining bugs will be simpler, less fundamental, and more
4099 fixable then the bugs in the old code.
4100 ** The revised compiler is still a little unsteady on its feet.
4102 *** The debugging information it produces (particularly the names
4103 of FUNCTION objects) is sometimes much less useful than what
4104 the old compiler produced.
4105 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4106 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4107 within a MACROLET) has been temporarily weakened.
4108 ** There are new compiler optimizations for various functions:
4109 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4110 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4111 *** the math functions TRUNCATE, FLOOR, and CEILING
4112 *** the function-of-all-trades COERCE
4113 Mostly these should be transparent, but there's one
4114 potentially-annoying problem (bug 117): when the compiler
4115 inline-expands a function and does type analysis on the result,
4116 it can create control paths which have type mismatches, and
4117 when it can't prove that those control paths aren't taken,
4118 it will issue WARNINGs about the type mismatches. This is
4119 a particular problem in practice for the new sequence functions.
4120 It's not clear how this should be fixed, and for now, a
4121 workaround is given in the entry for 117 in the BUGS file.
4122 ** (Because of the interaction between the two previous items --
4123 occasional inlining problems and new inline expansions -- some
4124 of the new sequence function optimizations won't really kick in
4125 completely until debugging information, and then inlining, are
4126 straightened out in some future version.)
4127 * minor incompatible changes:
4128 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4129 DIRECTORY no longer implicitly promotes NIL slots of its
4130 pathname argument to :WILD. In particular, when you ask for the
4131 contents of a directory (which you used to be able to do without
4132 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4133 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4134 ** changes in behavior that ANSI explicitly defines to be
4135 implementation dependent:
4136 *** The new compiler-only implementation still conforms with ANSI,
4137 but acts a little different than before. Besides the obvious
4138 changes in performance tradeoffs (that the cost per form passed
4139 to EVAL has gone up, and the cost per form executed by EVAL
4140 has gone down), the behavior of the system changes a little
4141 because there are no longer any interpreted function objects.
4142 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4143 e.g. doing COMPILE on the output of interactive DEFUN is
4145 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4147 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4148 has changed from (:CL) to NIL.
4149 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4150 e.g. #\Newline and #\Tab, don't have names specified in the
4151 ANSI Common Lisp standard, is now based on their ASCII symbolic
4152 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4153 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4154 are no longer used for output.
4155 ** changes in internal implementation constants:
4156 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4157 4 million. (If your application spends a lot of time GCing and
4158 you have a lot of RAM, you might want to experiment with
4159 increasing it even more.)
4160 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4161 However, almost all old code should still continue to work without
4162 immediate update, as SB-C-CALL is now a (deprecated) nickname
4164 ** Old operator names in the style DEF-FOO are now deprecated in
4165 favor of new corresponding names DEFINE-FOO, for consistency with
4166 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4167 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4168 internal symbols, but a few supported extensions like
4169 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4170 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4171 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4172 etc. as you get deeper into recursive calls to the debugger
4173 command loop, instead of the old "5]", "5]]", "5]]]"
4174 sequence. (I was motivated to do this when squabbles between
4175 ILISP and SBCL left me very deeply nested in the debugger. In the
4176 short term, this change will probably provoke more ILISP/SBCL
4177 squabbles, but hopefully it will be an improvement in the long run.)
4178 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4179 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4180 function, since declaiming return types involving aliens is
4181 (1) annoyingly messy to do by hand and (2) vital to efficient
4182 compilation of code which calls such functions.
4183 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4184 longer reexported by the SB-EXT package. They're solely useful
4185 for alien code, so it seems more logical that you should get
4186 them from the SB-ALIEN package, not in SB-EXT.
4187 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4188 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4189 features. Instead, the code that they used to control is always
4190 built into the system.
4191 * many other bug fixes
4192 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4193 advantage of the new EVAL-WHEN stuff and to clean them up in
4194 general, and they are now more ANSI-compliant in a number of
4195 ways. Martin Atzmueller is responsible for a lot of this.
4196 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4198 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4199 *** correct ERROR type for various file operations
4200 *** some fixes for Lisp streams
4201 *** DEFMETHOD syntax checking
4202 *** changing old weird representation of debug information as
4203 strings (which, among their other deficiencies, don't transform
4204 correctly when you rename packages, and don't change their
4205 print representation when you change things like *PACKAGE*
4206 and *PRINT-LENGTH*) to symbols and lists of symbols
4207 He also made several improvements and fixed several bugs in DESCRIBE.
4208 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4210 *** misbehavior of WRITE-STRING/WRITE-LINE
4211 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4212 and several other LOOP problems as well
4213 *** DIRECTORY when similar filenames are present
4214 *** DEFGENERIC with :METHOD options
4215 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4216 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4217 *** argument ordering in FIND with :TEST option
4218 *** mishandled package designator argument in APROPOS-LIST
4219 *** various problems in the backquote readmacro
4220 *** a bug in APROPOS
4221 *** probably some others that I'm not describing very well here,
4222 since the CVS log documents them by reference to sbcl-devel
4223 messages, and the SourceForge archives aren't working well.:-(
4224 ** Dan Barlow improved the Alpha port (and is making progress on the
4225 PPC port, for those of you who think different).
4226 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4227 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4228 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4229 continues to work on the SPARC port (for those of you in a position
4230 to look down upon our little PC-compatible boxes from a great height).
4231 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4232 and uses that copy, rather than the current dynamic value, when
4233 it's trying to decide whether to truncate output. Thus e.g.
4234 (let ((*print-lines* 50))
4235 (pprint-logical-block (stream nil)
4237 (let ((*print-lines* 8))
4238 (print (aref possiblybigthings i) stream)))))
4239 should now truncate the logical block only at 50 lines, instead of
4240 often truncating it at 8 lines, as it did before.
4241 * The doc/cmucl/ directory, containing old CMU CL documentation
4242 from the time of the fork, is no longer part of the base system.
4243 SourceForge has shut down its anonymous FTP service, and with it
4244 my original plan for distributing the old CMU CL documentation
4245 there. For now, if you need these files you can download an old
4246 SBCL source release and extract them from it.
4247 * The fasl file version number changed again, for dozens of reasons,
4248 some of which are apparent above.
4250 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4251 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4252 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4253 patch, so that DISASSEMBLE output is much nicer.
4254 * The code in the SB-PROFILE package now seems reasonably stable.
4255 I still haven't decided what the final interface should look like
4256 (I'd like PROFILE to interact cleanly with TRACE, since both
4257 facilities use function encapsulation) but if you have a need
4258 for profiling now, you can probably use it successfully with
4259 the current CMU-CL-style interface.
4260 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4261 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4262 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4263 link now returns the dangling link itself, and for similar
4264 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4265 link itself. (In these cases the old code signalled an error and
4266 looped endlessly, respectively.) Thus, DIRECTORY now works even
4267 in the presence of dangling and cyclic symbolic links.
4268 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4269 is now a supported extension again, since the consensus on
4270 sbcl-devel was that it can be useful for ordinary development
4271 work, not just for debugging SBCL itself.
4272 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4273 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4274 that currently-defined functions might be redefined later with
4275 different return types.
4276 * Hash tables can be printed readably, as inspired by CMU CL code
4277 of Eric Marsden and SBCL code of Martin Atzmueller.
4278 * better error handling in CLOS method combination, thanks to
4279 Martin Atzmueller porting Pierre Mai's CMU CL patches
4280 * more overflow fixes for >16Mbyte I/O buffers
4281 * A bug in READ has been fixed, so that now a single Ctrl-D
4282 character suffices to cause end-of-file on character streams.
4283 In particular, now you only need one Ctrl-D at the command
4284 line (not two) to exit SBCL.
4285 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4287 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4288 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4289 does the right thing.
4290 * The implementation of some type tests, especially for CONDITION
4291 types, is now tidier and maybe faster, due to CMU CL code
4292 originally by Douglas Crosher, ported by Martin Atzmueller.
4293 * Some math functions have been fixed, and there are new
4294 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4295 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4296 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4297 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4298 likely to be built into sbcl-0.7.0.)
4299 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4300 CL, ported to SBCL by Martin Atzmueller)
4301 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4302 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4303 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4304 * There's a new slam.sh hack to shorten the edit/compile/debug
4305 cycle for low-level changes to SBCL itself, and a new
4306 :SB-AFTER-XC-CORE target feature to control the generation of
4307 the after-xc.core file needed by slam.sh.
4308 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4309 COMPILE-FILE is no longer supported, so that now every function
4310 gets an entry point, so that block compilation looks a little
4311 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4312 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4313 returns the number of bytes consed since the system started,
4314 rather than the number consed since the first time the function
4315 was called. (The new definition parallels ANSI functions like
4316 CL:GET-INTERNAL-RUN-TIME.)
4317 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4318 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4319 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4320 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4321 * Fasl file version numbers are now independent of the target CPU,
4322 since historically most system changes which required version
4323 number changes have affected all CPUs equally. Similarly,
4324 the byte fasl file version is now equal to the ordinary
4327 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4328 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4329 is no longer recognized. I apologize for this, because it was
4330 listed in SB-EXT as a supported extension, but I found that
4331 its existing behavior was poorly specified, as well as incorrectly
4332 specified, and it looked like too much of a mess to straighten it
4333 out. I have enough on my hands trying to get ANSI stuff to work..
4334 * many patches ported from CMU CL by Martin Atzmueller, with
4335 half a dozen bug fixes in pretty-printing and the debugger, and
4336 half a dozen others elsewhere
4337 * fixed bug 13: Floating point infinities are now supported again.
4338 They might still be a little bit flaky, but thanks to bug reports
4339 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4340 as flaky as they were.
4341 * The --noprogrammer command line option is now supported. (Its
4342 behavior is slightly different in detail from what the old man
4343 page claimed it would do, but it's still appropriate under the
4344 same circumstances that the man page talks about.)
4345 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4346 are now supported, and enabled by default. Thus, the compiler can
4347 handle many floating point and complex operations much less
4348 inefficiently. (Thus e.g. you can implement a complex FFT
4350 * The compiler now detects type mismatches between DECLAIM FTYPE
4351 and DEFUN better, and implements CHECK-TYPE more correctly, and
4352 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4353 thanks to patches from Martin Atzmueller.
4354 * various fixes to make the cross-compiler more portable to
4355 ANSI-conforming-but-different cross-compilation hosts (notably
4356 Lispworks for Windows, following bug reports from Arthur Lemmens)
4357 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4358 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4359 fixed thanks to Pierre Mai's CMU CL patches.
4360 * fixes to keep the system from overflowing internal counters when
4361 it tries to use i/o buffers larger than 16M bytes
4362 * fixed bug 45a: Various internal functions required to support
4363 complex special functions have been merged from CMU CL sources.
4364 (When I was first setting up SBCL, I misunderstood a compile-time
4365 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4366 * improved support for type intersection and union, fixing bug 12
4367 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4368 more obscure bugs as well
4369 * some steps toward byte-compiling non-performance-critical
4370 parts of the system, courtesy of patches from Martin Atzmueller
4371 * Christophe Rhodes has made some debian packages of sbcl at
4372 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4373 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4374 stable, but are nonetheless usable. When he's ready, I'd be happy
4375 to add them to the SourceForge "File Releases" section. (And if
4376 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4377 * new fasl file format version number (because of changes in
4378 internal representation of (OR ..) types to accommodate the new
4379 support for (AND ..) types, among other things)
4381 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4382 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4384 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4386 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4387 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4388 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4389 * DESCRIBE now works on structure objects again.
4390 * Most function call argument type mismatches are now handled as
4391 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4392 know whether the function will be redefined before the call is
4393 executed. (The compiler could flag local calls with full WARNINGs,
4394 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4395 it doesn't keep track of enough information to know whether calls
4396 are local in this sense.)
4397 * Compiler output is now more verbose, with messages truncated
4398 later than before. (There should be some supported way for users
4399 to override the default verbosity, but I haven't decided how to
4400 provide it yet, so this behavior is still controlled by the internal
4401 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4402 src/compiler/ir1util.lisp.)
4403 * Fasl file format version numbers have increased again, because
4404 support for the Gray streams extension changes the layout of the
4405 system's STREAM objects.
4406 * The Gray subclassable streams extension now works, thanks to a
4407 patch from Martin Atzmueller.
4408 * The full LOAD-FOREIGN extension (not just the primitive
4409 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4410 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4411 but like most other programs, it defaults to copying the Unix
4412 environment from the original process instead of starting the
4413 new process in an empty environment.
4414 * Extensions which manipulate the Unix environment now support
4415 an :ENVIRONMENT keyword option which doesn't smash case or
4416 do other bad things. The CMU-CL-style :ENV option is retained
4417 for porting convenience.
4418 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4419 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4421 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4423 * A patch from Martin Atzmueller seems to have solved the SIGINT
4424 problem, and as far as we know, signal-handling now works cleanly.
4425 (If you find any new bugs, please report them!)
4426 * The system no longer defaults Lisp source file names to types
4427 ".l", ".cl", or ".lsp", but only to ".lisp".
4428 * The compiler no longer uses special default file extensions for
4429 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4430 seems to expect a single default extension for all compiled code,
4431 and there's no compelling reason to try to stretch the standard
4432 to allow two different extensions.) Instead, byte-compiled files
4433 default to the same extension as native-compiled files.
4434 * Fasl file format version numbers have increased again, because
4435 a rearrangement of internal implementation packages made some
4436 dumped symbols in old fasl files unreadable in new cores.
4437 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4438 many fewer weird special cases.
4439 * Bug #17 (differing COMPILE-FILE behavior between logical and
4440 physical pathnames) has been fixed, and some related misbehavior too,
4441 thanks to a patch from Martin Atzmueller.
4442 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4443 by Tim Moore, ported to SBCL by Martin Atzmueller.
4444 * Martin Atzmueller fixed several filesystem-related problems,
4445 including bug #36, in part by porting CMU CL patches, which were
4446 written in part by Paul Werkowski.
4447 * More compiler warnings in src/runtime/ are gone, thanks to
4448 more patches from Martin Atzmueller.
4449 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4452 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4454 * DESCRIBE now works on CONDITION objects.
4455 * The debugger now handles errors which arise when trying to print
4456 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4458 * The build system now uses an additional file, customize-target-features.lisp,
4459 to allow local modifications to the target *FEATURES* list. (The point of
4460 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4461 debugging features enabled, without having to worry about propagating it
4462 into everyone's system when I do a "cvs update".) When no
4463 customize-target-features.lisp file exists, the target *FEATURES* list
4464 should be constructed the same way as before.
4465 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4466 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4467 warn about behavior which is undefined under the ANSI spec. Note: This
4468 is specified by ANSI, but it's not very popular with programmers.
4469 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4470 macro in the SBCL sources for an example of a workaround which you
4471 might use to make portable ANSI-standard code which does what you want.
4472 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4473 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4474 when it's used as a non-toplevel form. (This is required in order
4475 to implement the DEFCONSTANT-EQX macro.)
4476 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4477 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4478 funny things, due to bugs in the implementation of EVAL-WHEN
4479 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4480 non-toplevel DEFCONSTANTs are uncommon.)
4481 * The core file version number and fasl file version number have been
4482 incremented, because the old noncompliant DEFCONSTANT behavior involved
4483 calling functions which no longer exist, and because I also took the
4484 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4485 * fixed bug 1 (error handling before read-eval-print loop starts), and
4486 redid debugger restarts and related debugger commands somewhat while
4488 ** The QUIT debugger command is gone, since it did something
4489 rather different than the SB-EXT:QUIT command, and since it never
4490 worked properly outside the main toplevel read/eval/print loop.
4491 Invoking the new TOPLEVEL restart provides the same functionality.
4492 ** The GO debugger command is also gone, since you can just invoke
4493 the CONTINUE restart directly instead.
4494 ** The TOP debugger command is also gone, since it's redundant with the
4495 FRAME 0 command, and since it interfered with abbreviations for the
4497 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4499 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4500 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4501 some porting work by Martin Atzmueller)
4502 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4503 with a boatload of patches which he ported to SBCL. Now that those
4505 ** The system tries to make sure that its low-priority messages
4506 are prefixed by semicolons, to help people who like to use
4507 syntax highlighting in their ILISP buffer. (This patch
4508 was originally due to Raymond Toy.)
4509 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4510 patches originally written by Raymond Toy.
4511 ** The compiler understands coercion between single-value and
4512 multiple-VALUES type expressions better, getting rid of some very
4513 weird behavior, thanks to patches originally by Robert MacLachlan
4514 and Douglas Crosher.
4515 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4516 lambda lists, thanks to a patch originally by Pierre Mai.
4517 ** The system no longer bogusly warns about "abbreviated type
4519 ** The compiler gets less confused by inlining and RETURN-FROM,
4520 thanks to some patches originally by Tim Moore.
4521 ** The system no longer hangs when dumping circular lists to fasl
4522 files, thanks to a patch originally from Douglas Crosher.
4523 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4524 undefined function error.
4525 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4526 in structure slot initforms) for now, documented workaround instead:-|
4527 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4528 * fixed bug 5: added stubs for various Gray stream functions called
4529 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4530 installed, at least appropriate type errors are generated
4531 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4532 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4533 consistently in DEFMETHOD forms.
4534 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4535 it doesn't seem to affect SBCL after all
4536 * The C runtime system now builds with better optimization and many
4537 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4539 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4541 * The system is now under CVS at SourceForge (instead of the
4542 CVS repository on my home machine).
4543 * The new signal handling code has been tweaked to treat register
4544 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4545 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4546 downstream, e.g. in debug-int.lisp, has implicit dependencies
4547 on the unsignedness of integer representation of machine words,
4548 and that caused the system to bomb out with infinite regress
4549 when trying to recover from type errors involving signed values,
4550 e.g. (BUTLAST '(1 2 3) -1).)
4551 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4552 (This was one of the bugs Peter Van Eynde reported back in July.)
4553 * The system now uses code inspired by Colin Walters' O(N)
4554 implementation of MAP (from the cmucl-imp@cons.org mailing
4555 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4556 inline the MAP operation, and there is more than one
4557 sequence argument to the MAP call (so that it can't just
4558 do ETYPECASE once and for all based on the type of the
4559 single sequence argument). (The old non-inline implementation
4560 of the general M-argument sequence-of-length-N case required
4561 O(M*N*N) time when any of the sequence arguments were LISTs.)
4562 * The QUIT :UNIX-CODE keyword argument has been renamed to
4563 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4564 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4566 * Raymond Wiker's patches to port dynamic loading from Linux to
4567 FreeBSD have been added.
4568 * The BUGS file is now more nearly up to date, thanks in large part
4569 to Martin Atzmueller's review of it.
4570 * The debugger now flushes standard output streams before it begins
4571 its output ("debugger invoked" and so forth).
4572 * The core version number and fasl file version number have both
4573 been incremented, because of incompatible changes in the layout
4575 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4576 used to not be called for a saved Lisp image.)
4577 * Martin Atzmueller's version of a patch to fix a compiler crash,
4578 as posted on sbcl-devel 13 September 2000, has been installed.
4579 * Instead of installing Martin Atzmueller's patch for the
4580 compiler transform for SUBSEQ, I deleted the compiler transform,
4581 and transforms for some similar consing operations.
4582 * A bug in signal handling which kept TRACE from working on OpenBSD
4584 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4585 away by constant folding
4586 * The system now defines its address space constants in one place
4587 (in the Lisp sources), and propagates them automatically elsewhere
4588 (through GENESIS and the sbcl.h file). Therefore, patching the
4589 address map is less unnecessarily tedious and error-prone. The
4590 Lisp names of address space constants have also been systematized.
4591 * CVS tags like dollar-Header-dollar have been removed from
4592 the sources, because they have never saved me trouble and
4593 they've been source of trouble working with patches and other
4594 diff-related operations.
4595 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4596 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4598 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4600 * The system has been ported to OpenBSD.
4601 * The system now compiles with a simple "sh make.sh" on the systems
4602 that it's supported on. I.e., now you no longer need to tweak
4603 text in the target-features.lisp-expr and symlinks in src/runtime/
4604 by hand, the make.sh takes care of it for you.
4605 * The system is no longer so grossly inefficient when compiling code
4606 involving vectors implemented as general (not simple) vectors (VECTOR T),
4607 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4608 which dares to use the various sequence functions on non-simple
4609 vectors, takes less of a performance hit.
4610 * There is now a primitive type predicate VECTOR-T-P
4611 to test for the (VECTOR T) type, so that e.g.
4612 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4613 can now be compiled with some semblance of efficiency. (The old code
4614 turned the type declaration into a full call to %TYPEP at runtime!)
4615 * AREF on (VECTOR T) is still not fast, since it's still compiled
4616 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4617 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4618 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4619 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4620 without making full calls to SUBTYPEP at runtime.
4621 (Some analogous efficiency issues for non-simple vectors specialized to
4622 element types other than T, or for non-simple multidimensional arrays,
4623 have not been addressed. They could almost certainly be handled the
4624 same way if anyone is motivated to do so.)
4625 * The changes in array handling break binary compatibility, so
4626 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4627 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4628 instead of (VALUES T T).
4629 * By following the instructions that Dan Barlow posted to sbcl-devel
4630 on 2 July 2000, I was able to enable primitive dynamic object
4631 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4632 functionality is not implemented (since it calls ld to resolve
4633 library references automatically, requiring RUN-PROGRAM for its
4634 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4635 try to resolve library references) is now supported.
4636 * The system now flushes the standard output streams when it terminates,
4637 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4638 them at several other probably-convenient times, e.g. in each pass of
4639 the toplevel read-eval-print loop, and after evaluating a form given
4640 as an "--eval" command-line option. (These changes were motivated by a
4641 discussion of stream flushing issues on cmucl-imp in August 2000.)
4642 * The source transform for TYPEP of array types no longer assumes
4643 that an array whose element type is a not-yet-defined type
4644 is implemented as an array of T, but instead punts, so that the
4645 type will be interpreted at runtime.
4646 * There is now some support for cross-compiling in make.sh: each of
4647 the phases of make.sh has its own script. (This should be transparent
4648 to people doing ordinary, non-cross-compile builds.)
4649 * Since my laptop doesn't have hundreds of megabytes of memory like
4650 my desktop machine, I became more motivated to do some items on
4651 my to-do list in order to reduce the size of the system a little:
4652 ** Arrange for various needed-only-at-cold-init things to be
4653 uninterned after cold init. To support this, those things have
4654 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4655 symbols with such names are now uninterned after cold init).
4656 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4657 fasl files for cold load.
4658 ** Remove the old compiler structure pooling code (which used to
4659 be conditional on the target feature :SB-ALLOC) completely.
4660 ** Redo the representation of some data in cold init to be more compact.
4661 (I also looked into supporting byte compiled code at bootstrap time,
4662 which would probably reduce the size of the system a lot, but that
4663 looked too complicated, so I punted for now.)
4664 * The maximum signal nesting depth in the src/runtime/ support code has
4665 been reduced from 4096 to 256. (I don't know any reason for the very
4666 large old value. If the new smaller value turns out to break something,
4667 I'll probably just bump it back up.)
4668 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4670 * Many, many bugs reported by Peter Van Eynde have been added to
4671 the BUGS list; some have even been fixed.
4672 * While enabling dynamic object file loading, I tried to make the
4673 code easier to understand, renaming various functions and variables
4674 with less ambiguous names, and changing some function calling
4675 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4676 * While trying to figure out how to do the OpenBSD port, I tried to
4677 clean up some of the code in src/runtime/. In particular, I dropped
4678 support for non-POSIX signal handling, added various comments,
4679 tweaked the code to reduce the number of compilation warnings, and
4680 renamed some files to increase consistency.
4681 * To support the new automatic configuration functionality in make.sh,
4682 the source file target-features.lisp-expr has been replaced with the
4683 source file base-target-features.lisp-expr and the machine-generated
4684 file local-target-features.lisp-expr.
4685 * fixed a stupid quoting error in make.sh so that using CMU CL
4686 "lisp -batch" as cross-compilation host works again
4688 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4690 * DESCRIBE no longer tries to call itself recursively to describe
4691 bound/fbound values, so that it no longer fails on symbols which are
4692 bound to themselves (like keywords, T, and NIL).
4693 * DESCRIBE now works on generic functions.
4694 * The printer now prints less-screwed-up representations of closures
4695 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4696 * A private symbol is used instead of the :EMPTY keyword previously
4697 used to mark empty slots in hash tables. Thus
4698 (DEFVAR *HT* (MAKE-HASH-TABLE))
4699 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4700 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4701 now does what ANSI says that it should. (You can still get
4702 similar noncompliant behavior if bang on the hash table
4703 implementation with all the symbols you get back from
4704 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4705 This breaks binary compatibility, since tests for equality to
4706 :EMPTY are wired into things like the macroexpansion of
4707 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4709 * There's now a minimal placeholder implementation for CL:STEP,
4710 as required by ANSI.
4711 * An obscure bug in the interaction of the normal compiler, the byte
4712 compiler, inlining, and structure predicates has been patched
4713 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4714 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4716 * Missing ordinary arguments in a macro call are now detected even
4717 when the macro lambda list contains &KEY or &REST.
4718 * The debugger no longer complains about encountering the top of the
4719 stack when you type "FRAME 0" to explicitly instruct it to go to
4720 the top of the stack. And it now prints the frame you request even
4721 if it's the current frame (instead of saying "You are here.").
4722 * As specified by ANSI, the system now always prints keywords
4723 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4725 * The default initial SIZE of HASH-TABLEs is now smaller.
4726 * Type information from CLOS class dispatch is now propagated
4727 into DEFMETHOD bodies, so that e.g.
4728 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4730 is now basically equivalent to
4731 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4732 (DECLARE (TYPE SINGLE-FLOAT X))
4734 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4735 operation, without having to do run-time type dispatch.
4736 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4737 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4738 * Since I don't seem to be making big file reorganizations very often
4739 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4740 is overflowing my ability to conveniently back them up), I've finally
4741 checked the system into CVS. (The CVS repository is on my home system,
4742 not at SourceForge -- putting it on SourceForge might come later.)
4743 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4744 high-level GC-NOTIFY-FOO functions send their output. (There's
4745 still very little control of where low-level verbose GC functions
4746 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4747 less than it used to -- the GC-NOTIFY-FOO functions are now under
4748 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4749 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4750 in only one place in the source code, and propagates it automatically
4751 everywhere that it's needed. Thus e.g. when I bump the version from
4752 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4753 * The C source files now include boilerplate legalese and documentation
4754 at the head of each file (just as the Lisp source files already did).
4755 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4756 to his page will be replaced with a link to his new CLiki service.
4758 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4760 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4761 * The build process now looks for GNU make under the default name "gmake",
4762 instead of "make" as it used to. If GNU make is not available as "gmake"
4763 on your system, you can change this default behavior by setting the
4764 GNUMAKE environment variable.
4765 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4766 can build without error under CMU CL.
4768 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4770 * There is now a partial SBCL user manual (with some new text and some
4771 text cribbed from the CMU CL manual).
4772 * The beginnings of a profiler have been added (starting with the
4773 CMU CL profiler and simplifying and cleaning up). Eventually the
4774 main interface should be through the TRACE macro, but for now,
4775 it's still accessed through vaguely CMU-CL-style functions and macros
4776 exported from the package SB-PROFILE.
4777 * Some problems left over from porting CMU CL to the new
4778 cross-compilation bootstrap process have been cleaned up:
4779 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4780 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4781 part when getting rid of the compiler *BACKEND* stuff.)
4782 ** The value of *NULL-TYPE* was screwed up, because it was
4783 being initialized before the type system knew the final
4784 definition of the 'NULL type. This screwed up several key
4785 optimizations in the compiler, causing inefficiency in all sorts
4786 of places. (I found it because I wanted to understand why
4787 GET-INTERNAL-RUN-TIME was consing.)
4788 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4789 PROCLAIM FTYPE information. Unfortunately this broke binary
4790 compatibility again, since now the forms output by DEFGENERIC
4791 to refer to functions which didn't exist in 0.6.3.
4792 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4793 can use the new (as of 0.6.3) transform for SOME into MAP into
4795 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4796 values to (INTEGER 0 1000000), so that the time code will no longer
4797 occasionally get blown up by Linux returning 1000000 microseconds
4798 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4799 its output conform to the ANSI spec. (Alas, this makes its output
4800 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4801 * A full call to MAP NIL with a single sequence argument no longer conses.
4802 * fixes to problems pointed out by Martin Atzmueller:
4803 * The manual page no longer talks about multiprocessing as though
4804 it were currently supported.
4805 * The ILISP support patches have been removed from the distribution,
4806 because as of version 5.10.1, ILISP now supports SBCL without us
4807 having to maintain patches.
4808 * added a modified version of Raymond Toy's recent CMU CL patch for
4809 EQUALP comparison of HASH-TABLE
4811 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4813 * The system still can't cross-compile itself with
4814 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4815 entails), but at least it can compile more of itself that way
4816 than it used to be able to, and various buglets which were uncovered
4817 by trying to cross-compile itself that way have now been fixed.
4818 * This release breaks binary compatibility again. This time
4819 at least I've incremented the FASL file format version to 2, so that the
4820 problem can be detected reliably instead of just causing weird errors.
4821 * various new style warnings:
4822 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4823 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4824 ** using the lexical binding of a variable named in the *FOO* style
4825 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4826 as specified by ANSI.
4827 * *RANDOM-STATE* is no longer automatically initialized from
4828 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4829 default behavior of the system is to repeat its behavior every time
4830 it's run. If you'd like to change this behavior, you can always
4831 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4832 old convention there was no comparably easy way to get the system to
4833 repeat its behavior every time it was run.
4834 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4835 FTYPE declarations has been removed, in favor of their ANSI
4836 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4837 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4838 the types of their sequence arguments can be determined at compile time.
4839 This is done through a new open code expansion for MAP which eliminates
4840 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4841 argument types can be determined at compile time.
4842 * The optimizer now transforms COERCE into an identity operation when it
4843 can prove that the coerced object is already of the correct type. (This
4844 can be a win for machine generated code, including the output of other
4845 optimization transforms, such as the MAP transform above.)
4846 * Credit information has been moved from source file headers into CREDITS.
4847 * Source file headers have been made more standard.
4848 * The CASE macro now compiles without complaining even when it has
4851 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4853 * (Note that the way that the PCL macroexpansions were rewritten
4854 to accommodate the change in DEFGENERIC below breaks binary
4855 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4856 not run under sbcl-0.6.2. Once we get out of alpha releases,
4857 i.e. hit release 1.0.0, we'll probably try to maintain binary
4858 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4859 and sbcl-1.4.4. Until then, however, it might be fairly common
4860 for maintenance releases to break binary compatibility.)
4861 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4863 * The reporting of unhandled signals has been changed to print some
4864 explanatory text as well as the report form. (Previously only
4865 the report form was printed.)
4866 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4867 it defines, so that the compiler no longer issues undefined function
4868 warnings for compiled-but-not-yet-loaded generic functions.
4869 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4870 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4871 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4872 section of the ANSI spec are supported.
4873 * The "" nickname for the "KEYWORD" package has been removed.
4874 The reader still handles symbol tokens which begin with a package marker
4875 as keywords, but it doesn't expose its mechanism for doing so in the
4876 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4877 * The system now issues STYLE-WARNINGs for contradictory TYPE
4878 proclamations. (Warnings for contradictory FTYPE proclamations would
4879 be nice too, but those can't be done usefully unless the type system
4880 is made smarter about FUNCTION types.)
4881 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4882 systematized, so that "*target-*.lisp is supposed to exist only on the
4883 target and imply that there's a related file which exists on the
4884 host, and *host-*.lisp is supposed to exist only on the host and imply
4885 that there's a related file which exists on the target. This involves a
4886 lot of renaming. Hopefully the acute confusion caused by the renaming
4887 will be justified by the reduction in chronic confusion..
4888 ** runtime-type.lisp -> early-target-type.lisp
4889 ** target-type.lisp -> late-target-type.lisp
4890 ** early-host-format.lisp -> early-format.lisp
4891 ** late-host-format.lisp -> late-format.lisp
4892 ** host-error.lisp -> misc-error.lisp
4893 ** early-error.lisp -> early-target-error.lisp
4894 ** late-error.lisp -> late-target-error.lisp
4895 ** host-defboot.lisp -> early-defboot.lisp
4896 ** code/misc.lisp -> code/target-misc.lisp
4897 ** code/host-misc.lisp -> code/misc.lisp
4898 ** code/numbers.lisp -> code/target-numbers.lisp
4899 ** code/early-numbers.lisp -> numbers.lisp
4900 ** early-host-type.lisp -> early-type.lisp
4901 ** late-host-type.lisp -> late-type.lisp
4902 ** host-typep.lisp -> typep.lisp
4903 ** load.lisp -> target-load.lisp
4904 ** host-load.lisp -> load.lisp
4905 ** host-disassem.lisp -> disassem.lisp
4906 ** host-insts.lisp -> insts.lisp
4907 ** byte-comp.lisp -> target-byte-comp.lisp
4908 ** host-byte-comp.lisp -> byte-comp.lisp
4909 ** host-signal.lisp -> signal.lisp
4910 ** host-defstruct.lisp -> defstruct.lisp
4911 ** late-target-type.lisp -> deftypes-for-target.lisp
4912 Furthermore, several other previously target-only files foo.lisp (e.g.
4913 hash-table.lisp and random.lisp) have been split into a target-and-host
4914 foo.lisp file and a target-only target-foo.lisp file, with their key type
4915 definitions in the target-and-host part, so that the cross-compiler will
4916 know more about target types.
4917 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4918 gone away. In their place are various *BACKEND-FOO* variables
4919 corresponding to the slots of the old structure.
4920 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4921 into the target SBCL has been fixed.
4922 * The chill.lisp system for loading cold code into a running SBCL
4924 * Support for the CMU CL "scavenger hook" extension has been removed.
4925 (It was undocumented and unused in the CMU CL sources that SBCL was
4926 derived from, and stale in sbcl-0.6.1.)
4927 * Various errors in the cross-compiler type system were detected
4928 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4929 (enabling various consistency checks). Many of them were fixed,
4930 but some hard problems remain, so the compiler is back to
4931 running without *TYPE-SYSTEM-INITIALIZED* for now.
4932 * As part of the cross-compiler type system cleanup, I implemented
4933 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4934 * I have started adding UNCROSS calls throughout the type system
4935 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4936 on cross-compiler input files will be able to go away, and various
4938 * CONSTANTP now returns true for quoted forms (as explicitly required
4941 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4943 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4944 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4945 (MAKE-LIST -1). In the longer term, it ought to become true
4946 that declarations are assertions even at SAFETY 1. For now, it's not
4947 quite true even at SAFETY 3, but it's at least more nearly true..
4948 (Note that this change seems to increases the size of the system by
4949 O(5%) and to decrease the speed of the compiler by 20% or more.)
4950 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4951 for the problem of printing dozens of lines of distracting information
4952 about low-level system machinery as part of the top stack frame
4953 on entry to the debugger when an undefined function was called.
4954 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4955 is not reset to COMMON-LISP-USER.
4956 * Compilation of stuff related to dyncount.lisp has been made conditional
4957 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4958 smaller. The various dyncount-related symbols have been moved into
4959 a new "SB-DYNCOUNT" package.
4960 * tty-inspect.lisp has been renamed to inspect.lisp.
4961 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4962 feature has gone away. (When we eventually port to other flavors of
4963 libc and/or Unix, we'll try to make the differences between flavors
4964 invisible at the user level.)
4965 * Various other *FEATURES* tags, and/or their associated conditionals,
4966 have been removed if obsolescent, or given better documentation, or
4967 sometimes given more-mnemonic names.
4969 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4971 * tidied up "make.sh" script
4972 * tidied up system directory structure
4973 * better "clean.sh" behavior
4974 * added doc/FOR-CMUCL-DEVELOPERS
4975 * many many small tweaks to output format, e.g. removing possibly-confusing
4976 trailing #\. character in DESCRIBE-INSTANCE
4977 * (EQUALP #\A 'A) no longer signals an error.
4978 * new hashing code, including EQUALP hashing
4979 * tidied up Lisp initialization and toplevel
4980 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4981 * command line argument processing
4982 * added POSIX-GETENV function to deal with Unix-ish environment variables
4983 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4984 terminating SBCL on EOF
4985 * non-verbose GC by default
4986 * There is no more "sbcl" shell script; the sbcl file is now the C
4987 runtime executable (just like CMU CL).
4988 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4990 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4991 symbol and package information as Lisp native symbol and package objects
4992 instead of strings naming symbols and strings naming packages. This way,
4993 whenever packages are renamed (as in warm init), debug information is
4994 transformed along with everything else.
4995 * tweaked the optimization policy declarations which control the building
4996 of SBCL itself. Now, among other things, the system no longer saves
4997 source location debugging information. (This helps two problems at once
4998 by reducing SBCL size and by keeping SBCL from trying to look for its
4999 sources -- which may not exist -- when reporting errors.)
5000 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5001 debugging and testing purposes
5002 * cleaned up printing, making the printer call PRINT-OBJECT for
5003 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5004 methods, giving nearly-ANSI behavior
5005 * converted almost all special variables to use *FOO* naming convention
5006 * deleted PARSE-TIME functionality, since it can be done portably
5007 * moved some files out of cold init into warm init
5008 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5010 * regularized formatting of source files
5011 * added an install.sh script
5012 * fixed ridiculous memory usage of cross-compiler by making
5013 compiler/alloc.lisp not try to do pooling unless it can hook
5014 itself into the GC of the cross-compilation host. Now the system
5015 builds nicely on my old laptop.
5016 * added :SB-ALLOC in target-features.lisp-expr
5017 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5018 was not implemented)
5019 * re-did condition handling and note reporting in the compiler. Notes
5020 are no longer handled by signalling conditions. Style warnings
5021 and warnings are handled more correctly and reported in such a way
5022 that it's easy to find one or the other in your output (so that you
5023 can e.g. figure out which of many problems caused COMPILE-FILE to
5025 * changed the severity of several compiler warnings from full WARNING
5026 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5027 compiler note reporting so that it doesn't use the condition system
5028 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5029 COMPILE-FILE command)
5030 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5031 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5032 no longer supported, since their implementation was deeply intertwingled
5033 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5034 * removed bogus "support" for compiler macros named (SETF FOO), and
5035 removed the compiler macro for SETF INFO (but only after making a fool
5036 of myself on the cmucl-imp mailing list by posting a bogus patch for
5037 DEFINE-COMPILER-MACRO..)
5038 * Compiled files containing forms which have side effects on the Lisp
5039 reader (such as DEFPACKAGE forms) are now handled more correctly.
5040 (Compiler queuing of top level lambdas has been suppressed by setting
5041 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5042 * deleted various currently-unused source files, e.g. gengc.lisp. They
5043 may be added back at some point e.g. when porting to other architectures,
5044 but until they are it's distracting to distribute them and to try to
5046 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5047 there were so many of them they're just distractions, and UNCROSS is
5048 known to be able to handle the current sources
5049 * moved PROFILE functionality into TRACE, so that it will be clear
5050 how the wrapping and unwrapping of functions when you profile them
5051 interacts with the wrapping and unwrapping of functions when you
5052 trace them. (Actually, the functionality isn't there yet, but at least
5053 the interface specification is there. Hopefully, the functionality will
5054 arrive with some future maintenance release.)
5055 * removed host-oops.lisp
5056 * changed signature of QUIT function to allow UNIX-CODE argument
5057 * fixed READ-SEQUENCE bug
5058 * tweaked verbose GC output so that it looks more like the progress
5059 output that ANSI specifies for functions like LOAD
5060 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5061 * added <http://sbcl.sourceforge.com> to the banner information printed by