1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.26 relative to 1.0.25:
3 * incompatible change: GC-OFF and GC-ON are removed, they were
4 always unsafe. Use WITHOUT-GCING instead.
5 * new feature: runtime option --disable-ldb
6 * new feature: runtime option --lose-on-corruption to die at the
7 slightest hint of possibly non-recoverable errors: running out of
8 memory, stack, alien stack, binding stack, encountering a memory
9 fault, etc. In the absence of --lose-on-corruption a warning is
11 * optimization: slightly faster gc on multithreaded builds
12 * optimization: faster WITHOUT-GCING
13 * bug fix: when JOIN-THREAD signals an error, do it when not holding
14 important locks so that the debugger/handler doesn't produce
15 recursive errors or deadlock.
16 * bug fix: real-time signals are not used anymore, so no more
17 hanging when the system wide real-time signal queue gets full.
18 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
19 * bug fix: fix deadlocks related to starting threads
21 changes in sbcl-1.0.25 relative to 1.0.24:
22 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
23 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
24 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
25 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
26 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
27 better name and does not return values so stale on multiprocessor systems.
28 Also, HOLDING-MUTEX-P was added for about the only sane usage of
30 * improvement: unithread builds keep track of MUTEX-VALUE.
31 * improvement: reading from a TWO-WAY-STREAM does not touch the output
32 stream anymore making it thread safe to have a concurrent reader and
33 a writer, for instance, in a pipe.
34 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
35 arguments, making compiler-macros for SETF-functions able to inspect
36 their constant arguments.
37 * improvement: COMPILE-FILE reports times with millisecond accuracy
38 (thanks to Luis Oliveira)
39 * optimization: CHAR-CODE type derivation has been improved, making
40 TYPEP elimination on subtypes of CHARACTER work better. (reported
41 by Tobias Rittweiler, patch by Paul Khuong)
42 * bug fix: setting alien structure fields of type struct by value now
43 computes the right offset for the memory copy.
44 * bug fix: compilation problem involving inlined calls to aliens with
45 result type VOID. (reported by Ken Olum)
46 * bug fix: #235a; sequential inline expasion in different policies no
47 longer reuses the functional from the previous expansion site.
48 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
49 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
50 * bug fix: named ENUMs in multiply-referenced alien record types no longer
51 cause an implied type redefinition. Regression from 1.0.21.29.
52 * bug fix: sign-extension of small signed return values now works with C
53 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
54 * improvements to the Windows port:
55 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
56 Westfold, thanks to Rudi Schlatte)
58 changes in sbcl-1.0.24 relative to 1.0.23:
59 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
60 vector of a multidimensional SIMPLE-ARRAY.
61 * new feature: the system now signals a continuable error if standard
62 readtable modification is attempted. (thanks to Tobias Rittweiler)
63 * new feature: DIRECTORY has been extended with a non-standard keyword
64 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
65 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
66 has been robustified and documented better. (thanks to Robert Goldman)
67 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
68 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
69 * tradeoff: constant FORMAT control strings are now compiled unless
70 SPACE > SPEED (previously only when SPEED > SPACE.)
71 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
73 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
75 * bug fix: lexical type declarations are now correctly reported by
76 SB-CLTL2. (reported by Larry D'Anna)
77 * bug fix: STRING-TO-OCTETS did not handle :START properly when
78 using UTF-8 as external format. (thanks to Luis Oliveira)
79 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
80 are signalled correctly. (thanks to Stas Boukarev)
81 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
82 designator. (thanks to Tobias Rittweiler)
83 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
84 designator, and returns T instead of the function. (thanks to
86 * bug fix: direct superclasses of STANDARD-CLASS and
87 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
88 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
89 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
90 when no class with the named slot yet exists no longer causes a
91 compile-time style-warning.
92 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
93 in safe code. (reported by Didier Verna)
94 * bug fix: #430; nested structure constructors can stack allocate.
95 * bug fix: on some 64-bit platforms dynamic space size was truncated
96 to #xffff0000 bytes. (reported by Benjamin Lambert)
97 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
98 REPL unusable. (reported by Daniel Herring)
99 * bug fix: return values of READ-SEQUENCE did not take :START into
100 account on file streams, regressions since 1.0.12.22. (reported by
101 Thomas Russ, patch by Paul Khuong)
102 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
103 method specializer used to confuse permuation vector optimization.
104 * bug fix: system inserted bogus implicit type declarations for local
105 special variables in DEFMETHOD bodies.
106 * bug fix: #354; duplicated frames in backtraces due to
107 non-tail-call-optimized XEPs to functions with return type NIL
109 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
110 initializes structure object slots according to DEFSTRUCT initforms,
111 and DEFSTRUCT forms :INCLUDEind structure classes defined using
112 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
113 (reported by Bruno Haible and Stephen Wilson)
114 * bug fix: #395; fill-pointer output streams used now support
115 element-type BASE-CHAR as well.
116 * bug fix: compiler error when attempting to derive return value of
117 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
119 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
121 * bug fix: Mac OS X binaries should now be portable between Leopard
124 changes in sbcl-1.0.23 relative to 1.0.22:
125 * enhancement: when disassembling method functions, disassembly
126 for the associated fast function is also produced.
127 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
129 * optimization: printing with *PRINT-PRETTY* true is now more
130 efficient as long as the object being printed doesn't require
131 special handling by the pretty printer.
132 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
133 now interact correctly with type declarations.
134 * partial bug fix: PCL detects infinite recursion during wrapper
135 validation. (thanks to Attila Lendvai)
136 * bug fix: #426; nested function calls are inlined properly.
137 Previously if FOO was an inline function, in calls of the form
138 (FOO (FOO ...)) the outer call was not inlined.
139 * bug fix: long long arguments passed in registers to alien
140 functions on PowerPC Linux and NetBSD are now handled correctly
141 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
143 changes in sbcl-1.0.22 relative to 1.0.21:
144 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
145 for the shared object in the current directory, but passes the native
146 namestring of the designated pathname to the operation system's shared
147 object loading function as-it.
148 * minor incompatible change: --disable-debugger toplevel option now takes
149 effect before processing of initialization files and --eval or --load
151 * new feature: new commandline argument: --script, which supports
152 shebang lines. See documentation for details. (based on work by
154 * new feature: SAVE-LISP-AND-DIE can save current values of
155 --dynamic-space-size and --control-stack-size in the executable core,
156 causing it to skip normal runtime option processing. See documentation
157 for details. (thanks to Zach Beane)
158 * enhancement: inoccous calls to EVAL or generic functions dispatching
159 on subclasses of eg. STREAM no longer cause compiler notes to appear.
160 * enhancement: the system no longer resignals errors from --load and
161 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
162 associated with the original error to be lost. (thanks to Ariel
164 * enhancement: :DONT-SAVE keyword argument has been added to
165 LOAD-SHARED-OBJECT for controlling interaction with
166 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
167 the effects of an earlier LOAD-SHARED-OBJECT call.
168 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
169 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
170 provided. (reported by Cedric St-Jean)
171 * bug fix: circularity handling in the reader did not treat raw
172 structure slots correctly. (reported by Cedric St-Jean)
173 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
174 file descriptors when there were none.
175 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
176 was broken. (reporteed by Willem Broekema)
177 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
178 pathnames without a directory.
179 * bug fix: COMPILE-FILE did not warn about undefined variable
180 references at toplevel, and LOAD of the resulting fasl did
182 * bug fix: functions with non-required arguments used to end up with
183 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
184 * bug fix: redefining a function with non-required arguments didn't
185 update the system's knowledge about its call signature properly.
186 * bug fix: fixed #431; incompatible alien record type redefinitions
187 are detected and handled. (reported by Neil Haven)
188 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
189 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
191 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
192 after alien stack frames.
193 * bug fix: strings passed to mk{s,d}temp lacked null termination
195 changes in sbcl-1.0.21 relative to 1.0.20:
196 * new feature: the compiler is able to track the effective type of a
197 generic function across method addition and removal.
198 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
199 appropriately typed structure slots without locking.
200 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
201 information like those gathered by TIME using a programming-friendly
203 * new feature: TIME reports time taken even if the form performs a
204 non-local transfer of control.
205 * enhancement: reduced conservativism on GENCGC platforms: on
206 average 45% less pages pinned (measured from SBCL self build).
207 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
208 mutate constant symbols or violate declaimed type of the symbol.
209 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
210 sleeping on the semaphore in heavily contested semaphores.
211 * bug fix: semaphores and condition variables were not interrupt
213 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
214 owned by other threads anymore.
215 * bug fix: FIND on lists called KEY outside the specified
216 subsequence. (reported by budden)
217 * bug fix: LOG doesn't use single-float intermediate results when
218 given mixed integer and double-float arguments, leading to better
219 precision. (reported by Bob Felts)
220 * bug fix: LOG with base zero returned values of inconsistent type.
222 changes in sbcl-1.0.20 relative to 1.0.19:
223 * minor incompatible change: OPTIMIZE qualities
224 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
225 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
226 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
227 * documentation: some slot access efficiency guidelines have been
228 added to the user manual.
229 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
230 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
231 as ASSOC and MEMEBER.
232 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
233 to more efficient EQ-comparison versions more often.
234 * optimization: enhanced derivation of DOLIST iteration variable type
236 * optimization: constant folding of simple (LIST ...) forms as DOLIST
238 * optimization: runtime lookup of function definitions can be
239 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
240 * optimization: compiler is able to derive the return type of
241 (AREF (THE STRING X) Y) as being CHARACTER.
242 * optimization: CLRHASH on empty hash-tables no longer does pointless
243 work. (thanks to Alec Berryman)
244 * optimization: REPLACE deftransforms don't punt when :START1 or
246 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
247 no longer emits a code deletion note. (reported by Andrew
249 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
250 functions with an odd number of &OPTIONAL arguments, a &REST
251 argument, and one or more &KEY arguments at the call site.
252 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
253 arguments appeared at call sites as well.
254 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
255 READ-LINE &co can no longer read from them afterwards. (reported
257 * bug fix: fixed #427: unused local aliens no longer cause compiler
258 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
260 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
261 alien-stack leakage. (reported by Andy Hefner)
262 * bug fix: PROGV signals an error when an attempt to violate declared
263 type of a variable or bind a constant is made.
264 * bug fix: SET signals an error when an attempt to violate declared
265 type of a variable is made.
266 * bug fix: restart computation during the execution of a restart
267 test function no longer causes infinite recursion. (reported by
269 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
270 signals an error. (thanks to Pierre Mai)
271 * bug fix: EXPORT left symbol unexported in conflict situations.
272 (thanks to Michael Weber)
273 * bug fix: correctly handle name conflicts involving CL:NIL.
274 (thanks to Michael Weber)
275 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
276 conflicts arising from USEing package with conflicting symbols
277 correctly. (thanks to Michael Weber)
279 changes in sbcl-1.0.19 relative to 1.0.18:
280 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
281 warnings that go otherwise unhandled will be muffled if they are
282 of the type that's the value of this variable.
283 * optimization: stack allocation is slightly more efficient on x86
285 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
286 where a raw slot always is initialized using the initform whose
287 type is not know sufficiently well a compile-time are now compiled
288 correctly. (reported by John Morrison)
289 * bug fix: compiler no longer makes erronous assumptions in the
290 presence of non-foldable SATISFIES types.
291 * bug fix: stack analysis missed cleanups of dynamic-extent
292 arguments in non-let-converted calls to local functions.
293 * improvements to the Windows port:
294 ** adjusted address spaces for building on both Win32 and
295 Win64. (thanks for John Connors)
296 * fixed some bugs revealed by Paul Dietz' test suite:
297 ** interval arithmetic during type derivation used inexact integer
298 to single-float coercions.
299 ** arithmetic operations involving large integers and single
300 floats give the same results in compiled and interpreted code.
301 ** deriving the result type of COERCE no longer signals an error
302 if the derived type of the second argument is a MEMBER type
303 containing invalid type specifiers.
304 ** ADJOIN with constant NIL as second argument works correctly.
305 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
307 changes in sbcl-1.0.18 relative to 1.0.17:
308 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
309 profiles only the current thread.
310 * minor incompatible change: changes to SYMBOL-VALUE of constants
311 defined with DEFCONSTANT now signal an error.
312 * enhancement: SB-SPROF now has support for wallclock profiling,
313 and is also able to profile specific threads. REPORT output
314 has also additional sorting options.
315 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
317 * optimization: structure allocation has been improved
318 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
319 ** out of line constructors are ~10% faster.
320 ** inline constructors are ~15% faster.
321 ** inline constructors are capable of dynamic extent allocation
322 (generally on x86 and x86-64, in some cases on other platforms
324 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
326 * optimization: file compiler is now able to coalesce non-circular
327 lists, non-base strings, and bit-vectors. Additionally, constants
328 are never referenced through SYMBOL-VALUE at runtime.
329 * optimization: code defining methods on PRINT-OBJECT (and other
330 generic functions in the COMMON-LISP package) now loads faster.
331 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
333 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
334 fasl is now deleted. (reported by Attila Lendvai)
335 * bug fix: READ-LINE always returned NIL for the last line in files.
336 (reported by Yoshinori Tahara)
337 * bug fix: more accurate disassembly annotations of foreign function
338 calls. (thanks to Andy Hefner)
339 * bug fix: trimming non-simple strings and non-string string
340 designators when the there is nothing to trim works properly.
341 (thanks to James Knight)
342 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
343 (thanks to Travis Cross)
344 * fixed some bugs revealed by Paul Dietz' test suite:
345 ** NIL is a valid function name (regression at 1.0.13.38)
346 ** FILL on lists was missing its return value (regression at 1.0.12.27)
347 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
348 fill pointers properly (regression at 1.0.12.23)
349 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
350 displacement indices properly (regression at 1.0.12.23)
352 changes in sbcl-1.0.17 relative to 1.0.16:
353 * temporary regression: user code can no longer allocate closure
354 variable storage on stack, due to bug 419 without explicitly
355 requesting it. Please consult sbcl-devel for advice if you need to
356 use this feature in the meanwhile.
357 * new feature: runtime argument --control-stack-size can be used to
358 adjust thread default control stack size.
359 * enhancement: improved TIME output
360 ** all times are reported using the measured accuracy (milliseconds
361 for real and GC times, microseconds for everything else.)
362 ** processor cycle counts on x86 and x86-64.
363 ** interpreted forms are counted for both evaluator modes.
364 ** number of lambdas converted by the compiler is reported.
365 ** CPU percentage report (computed from real and total run time.)
366 ** more comprehensive run time reporting, using a condenced format
367 ** interperted form, lambda, and page fault counts are omitted
369 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
371 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
372 * optimization: two argument forms of LAST are upto ~10% faster
373 in normal SPEED policies.
374 * optimization: NCONC no longer needs to heap cons its &REST list
375 in normal SPEED policies.
376 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
378 * bug fix: UNION and NUNION work with :TEST-NOT once more,
379 regression since 1.0.9.1. (thanks to Eric Marsden)
380 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
381 since 1.0.15.36. (thanks to Paul Khuong)
382 * bug fix: LAST when always returned the whole list when given a bignum
383 as the second argument.
384 * bug fix: dynamic extent allocation of nested lists and vectors
385 could leak to otherwise accessible parts.
386 * bug fix: invalid optimization of heap-allocated alien variable
388 * bug fix: fasl header checking is less vulnerable to different
389 platform word lengths.
390 * bug fix: more correct assembler syntax for GNU binutils
391 2.18.50.0.4 support. (thanks to Marijn Schouten)
392 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
394 * bug fix: the fopcompiler can handle LOCALLY forms (with no
395 declarations) successfully. (reported by Attila Lendvai)
397 changes in sbcl-1.0.16 relative to 1.0.15:
398 * minor incompatible change: revert the changes to sb-posix's error
399 signaling added in 1.0.14.
400 * minor incompatible change: change PROBE-FILE back to returning
401 NIL whenever we can't get a truename, as was the case before 1.0.14.
402 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
403 inherits from ERROR instead of just CONDITION.
404 * new feature: SB-INTROSPECT can provide source locations for instances
405 as well. (thanks to Tobias Rittweiler)
406 * optimization: binding special variables now generates smaller code
407 on threaded platforms.
408 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
409 and cases where no :TEST is given but the compiler can infer that
410 the element to search is of type (OR FIXNUM (NOT NUMBER)).
411 * optimization: better LOGNOT on fixnums.
412 * optimization: modular arithmetic for a particular requested width
413 is implemented using a tagged representation unless a better
414 representation is available.
415 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
416 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
417 for wellformedness and returns a specialized vector. (reported by
418 Francois-Rene Rideau)
419 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
420 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
421 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
422 unscheduling timer at the same time as another timer fires.
423 * bug fix: don't reschedule timers for dead threads.
424 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
425 * bug fix: copying output from RUN-PROGRAM to a stream signalled
426 bogus errors if select() was interrupted.
427 * enhancement: add support for fcntl's struct flock to SB-POSIX.
429 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
430 * enhancement: cleaner backtraces for interactive interrupts, as
431 well as other cases where the interesting frames used to be
432 obscured by interrupt handling frames.
433 * enhancement: untracing a whole package using (UNTRACE "FOO") is
434 now supported, and tracing a whole package using (TRACE "FOO") now
435 traces SETF-functions as well.
436 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
437 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
438 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
439 * unreadably printed representation of hash-tables now includes
441 * bug fix: partially fixed #188: type propagation from assignments
442 is now more efficient.
443 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
444 'DOUBLE-FLOAT) are not flushable.
445 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
446 full address of the object, and none of the tag bits.
447 * bug fix: readably printing hash-tables now respects other printer
448 control variables. (reported by Cedric St-Jean)
449 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
450 keyword with MAKE-HASH-TABLE.
451 * bug fix: export SB-POSIX:MKSTEMP.
452 * bug fix: SORT was not interrupt safe.
453 * bug fix: XREF accounts for the last node of each basic-block as
455 * bug fix: MAKE-INSTANCE optimizations interacted badly with
456 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
457 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
458 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
459 create obsolete instances in the case of redefinition or
460 obsoletion of a superclass. (thanks to Andy Hefner)
461 * bug fix: Support for the Alpha architecture has been revived; it had
462 suffered somewhat from lack of maintenance since sbcl-1.0.
463 * improvements to the Windows port:
464 ** The system detects the codepage to use at startup, instead of
465 using the value from the saved core. (thanks to Kei Suzuki)
467 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
468 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
469 (see documentation for details.)
470 * revived support for OpenBSD (contributed by Josh Elsasser)
471 * partially fixed bug #108: ROOM no longer suffers from occasional
472 (AVER (SAP= CURRENT END)) failures.
473 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
474 bodies no longer cause a WARNING to be signalled. (reported by
476 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
477 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
478 the bug in TRUNCATE.) (reported by Michael Weber)
479 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
480 no samples. (reported by Andy Hefner)
481 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
482 no longer appear as (NIL ...) frames in backtraces.
483 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
484 is now actually exported from SB-EXT as documented. (reported by
486 * bug fix: sb-aclrepl now correctly understands how to inspect
487 single-floats on 64-bit platforms where single-floats are not boxed.
488 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
489 yet been finalized. (reported by Levente Meszaros)
490 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
491 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
492 SBCL-specific optimize qualities.
494 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
495 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
496 an executable in the search path, and does so in the child
497 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
498 been removed; it can be found in the CVS history, for somebody who
499 needs that search behavior (see the manual).
500 * minor incompatible change: compiler policy re. weakening type
501 checks has changed: now type checks are weakened only if SAFETY < 2
503 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
504 unparsing of directory pathnames as files. Analogously,
505 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
506 filename to parse into a directory pathname.
507 * enhancement: implicit generic function creation now signals a
508 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
509 users can bind handlers for and muffle around calls to LOAD.
510 * enhancement: RUN-PROGRAM allows unicode arguments and environments
511 to be used (using the default stream external format), and allows
512 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
513 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
514 strings and vectors whose element-type or simplicity is not fully
515 known at compile-time.
516 * optimization: STRING-TRIM and related functions no longer allocate
517 a new string when no trimming needs to be performed. These functions
518 are also faster than before when the input string has been declared
520 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
521 * optimization: READ-LINE is significantly faster for files containing
523 * optimization: non-open coded uses of character comparison operators
524 (e.g. char=) no longer cons when called with more than one parameter
525 on platforms supporting dynamic-extent allocation.
526 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
527 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
528 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
530 * bug fix: some sequence functions elided bounds checking when
532 * bug fix: too liberal weakening of union-type checks when SPEED >
534 * bug fix: more bogus fixnum declarations in ROOM implementation
537 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
538 * new feature: MAKE-HASH-TABLE now experimentally accepts a
539 :SYNCHRONIZED argument, which makes the hash-table safe for
540 concurrent accesses (but not iteration.) See also:
541 SB-EXT:WITH-LOCKED-HASH-TABLE, and
542 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
543 * optimization: CONCATENATE on strings is an order of magnitude faster
544 in code compiled with (> SPEED SPACE).
545 * optimization: SUBSEQ is ~50% faster on lists.
546 * bug fix: bug 417 fixed -- source location reporting is now more robust.
547 * bug fix: SUBSEQ on a list will now correctly signal an error if if
548 END is smaller then START.
549 * bug fix: SB-PROFILE will no longer report extra consing for nested
550 calls to profiled functions.
551 * bug fix: ROOM implementation had bogus fixnum declarations which
552 could cause type-errors when calling ROOM on large images.
553 * bug fix: if file compilation is aborted, the partial fasl is now
554 deleted, and COMPILE-FILE returns NIL as the primary value.
555 * bug fix: number of thread safety issues relating to SBCL's internal
556 hash-table usage have been fixed.
557 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
558 be returned from its body when the values were being returned
559 using unknown-values return convection and the W-P-O was wrapped
560 inside an UNWIND-PROTECT.
561 * bug fix: sb-posix should now compile again under Windows, enabling
564 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
565 * incompatible change: hash-table accessor functions are no longer
566 automatically protected by locks. Concurrent accesses on the same hash-table
567 from multiple threads can give inconsistent results or even corrupt the
568 hash-table completely. Multi-threaded applications should do their own
569 locking at the correct granularity. In the current implementation it is
570 still safe to have multiple readers access the same table, but it's not
571 guaranteed that this property will be maintained in future releases.
572 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
573 and will signal an error at runtime.
574 * enhancement: SB-THREAD package now exports a semaphore interface.
575 * enhancement: CONS can now stack-allocate on x86 and
576 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
578 * enhancement: nested lists can now be stack allocated on
579 platforms providing stack allocation support.
580 * enhancement: dynamic-extent support has been extended to support
581 cases where there are multiple possible sources for the stack
583 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
584 if the mutex is uncontested on Linux.
585 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
586 as specified by the CLHS. (thanks to Tobias Rittweiler)
587 * bug fix: NaN comparison now works on x86-64.
588 * bug fix: CLOSE :ABORT T on a stream with pending output now
590 * bug fix: instances of non-standard metaclasses using standard
591 instance structure protocol sometimes missed the slot type checks
593 * bug fix: known functions can be inlined in high-debug code.
595 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
596 * minor incompatible change: the MSI installer on Windows no longer
597 associates .lisp and .fasl files with the installed SBCL.
598 * minor incompatible change: :UNIX is no longer present in *FEATURES*
599 on Windows. (thanks to Luis Oliviera)
600 * new feature: SB-CLTL2 contrib module now implements
601 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
602 * optimization: scavenging weak pointers is now more efficient,
603 requiring O(1) instead of O(N) per weak pointer to identify
604 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
605 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
606 method bodies using constant slot-names when the first argument is
607 a specializer parameter for the method.
608 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
609 names, when the class of the instance is a direct instance
610 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
611 as slow as the constant slot-name case.)
612 * optimization: member type construction is now O(N) instead
614 * optimization: UNION and NUNION are now O(N+M) for large
615 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
617 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
618 now more readable in environments like Slime which display it.
619 (thanks to Tobias C. Rittweiler)
620 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
621 was able to infer the correct argument type for the object on which
622 the CAS operation was being performed.
623 * bug fix: copy propagation interfered with parallel assignment
624 semantics in local calls. (reported by Paul Khuong)
625 * bug fix: the signed modular fixnum shift compiled to wrong code on
626 x86 and x86-64. (spotted by a slight modification to some of
629 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
630 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
631 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
632 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
634 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
635 and generic function now print the object identity for anonymous
636 instances. (thanks to Attila Lendvai)
637 * enhancement: as an extension to MOP, SBCL now supports SETF of
638 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
639 (thanks to Attila Lendvai)
640 * enhancement: sb-cover has an alternate annotation mode which puts
641 the form annotations at the car of the form, instead of annotating
642 it completely. The benefit of this mode is that it shows better
643 which forms were instrumented by the compiler.
644 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
645 by printer control variables. (reported by Dan Corkill)
646 * bug fix: system leaked memory when delayed output was performed by
647 the OS in smaller chunks then expected. (thanks to David Smith)
648 * bug fix: system leaked memory when file streams were not closed
650 * bug fix: large objects written to slow streams that were modified
651 after the write could end up with the modified state written to
652 the underlying file descriptor.
653 * bug fix: multiple threads operating in parallel on the same stream
654 could cause buffer-overflows.
655 * bug fix: source location information is stored correctly
656 (broken since 1.0.6). This bug would generally show up as the
657 Slime debugger highlighting the wrong form when the sldb-show-source
659 * bug fix: Branch forms are again annotated as branches in the sb-cover
661 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
662 on x86-64. (reported by Gregory Vanuxem)
663 * bug fix: EQUALP could return wrong results for structures with raw
664 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
665 word). (reported by Vjacheslav Fyodorov)
666 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
669 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
670 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
671 atomic compare-and-swap operations on threaded platforms.
672 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
673 allows assigning a global minimum value to optimization qualities
674 (overriding proclamations and declarations).
675 * enhancement: closed over variables can be stack-allocated on x86
677 * performance bug fix: GETHASH and (SETF GETHASH) are once again
679 * optimization: slot definition lookup is now O(1). This speeds up
680 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
681 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
682 * optimization: ASSOC and MEMBER can now be open-coded for all
683 combinations of keyword arguments when second argument is constant
684 and SPEED >= SPACE. In other cases a specialized version is
686 * bug fix: using obsoleted structure instances with TYPEP and
687 generic functions now signals a sensible error.
688 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
689 (reported by Kristoffer Kvello)
690 * bug fix: backtrace construction is now more careful when making
691 lisp-objects from pointers on the stack, to avoid creating bogus
692 objects that can be seen by the GC.
693 * bug fix: defaulting of values in contexts expecting more than 7
694 variables now works on x86-64. (reported by Christopher Laux)
695 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
697 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
698 as the property-list of a symbol.
699 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
700 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
701 situations requested, are once again file-compileable. (reported
704 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
705 * MOP improvement: support for user-defined subclasses of
706 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
707 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
708 the expansion of DEFMETHOD, is responsible for generating a form
709 which creates a list of specializers when evaluated. Additional
710 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
711 debugging and introspective support.
712 * minor incompatible change: the (unsupported) spinlock interface
713 has changed: free spinlock now has the value NIL, and a held spinlock
714 has the owning thread as its value.
715 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
716 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
718 * enhancement: name of a socket-stream is now "a socket" instead of
720 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
721 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
722 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
723 for generic functions. (Thanks to Tobias C. Rittweiler)
724 * optimization: bignum printing speed has been improved by 20-40%
725 (depending on the bignum size.)
726 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
728 * bug fix: the cache used by the CLOS to store precomputed effective
729 methods, slot offsets, and constant return values is now thread and
731 * bug fix: generic function dispatch function updating is now thread
732 and interrupt safe (in the sense that the known issues have been
734 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
735 * bug fix: interning EQL-specializers is now thread and interrupt safe.
736 * bug fix: asdf systems with dependencies to the SB-POSIX or
737 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
738 * bug fix: interrupt safety of applicable method computation has been
741 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
742 * new contrib: sb-cover, an experimental code coverage tool, is included
744 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
745 significantly faster.
746 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
747 produce more efficient code on x86-64 if the compiler can determine
748 that (+ INDEX <constant>) does not require a bounds check and FOO
749 has an element type at least 8 bits wide.
750 * enhancement: a new, experimental synchronous timeout facility is
751 provided. Refer to SB-SYS:WITH-DEADLINE for details.
752 * enhancement: when a symbol name conflict error arises, the
753 conflicting symbols are always printed with a package prefix.
754 (thanks to Kevin Reid)
755 * enhancement: stepping is now once again supported on the SPARC and
756 MIPS platforms. (It is also now more likely to work on CheneyGC
758 * enhancement: sb-sprof can now also track and report accurate call
760 * bug fixes: the treatment of non-standard subclasses of
761 SB-MOP:SPECIALIZER is more correct.
762 * incompatible change: PURIFY no longer copies the data from the
763 dynamic space into the static and read-only spaces on platforms
764 that use the generational garbage collector
765 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
767 * bug fix: GC race condition occasionally resulting in crashes with
768 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
770 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
772 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
773 a STYLE-WARNING to be signalled (regression from 1.0.4.)
774 * bug fix: an asynchronous interrupt could previously leave the
775 system running with GC inhibited.
776 * bug fix: a DECLARE form evaluated at top-level now causes an error
777 rather than silently (or verbosely) returning NIL.
778 * bug fix: trying to dissassemble functions compiled at high DEBUG could
779 result in a error being signalled due to source form lookup errors.
780 (reported by Peter Graves)
782 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
783 * incompatible change: removed writer methods for host-ent-name,
784 host-ent-addresses -- changing the values did not update the DNS
786 * minor incompatible change: changed experimental JOIN-THREAD interface
787 * documentation: the manual now lists reader and writer methods
788 in class slot documentation sections. (thanks to Richard M Kreuter)
789 * documentation: unwinding from asyncronous events has been
790 documented as unsafe.
791 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
792 in multithreaded application code.
793 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
794 platforms. (thanks to James Anderson for the optimization hint)
795 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
797 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
798 variants no longer cons.
799 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
800 their NOT- variants no longer cons.
801 * optimization: EQUAL hash tables no longer use SXHASH for objects
802 of all data types, but instead use an EQL hash for types for which
803 EQUAL is the same as EQL.
804 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
805 are significantly faster.
806 * optimization: new STRING-OUTPUT-STREAM implementation is much
807 faster for large outputs and conses 30% less on average.
808 * enhancement: XREF information is now collected for references made
809 to global variables using SYMBOL-VALUE and a constant argument.
810 * enhancement: SIGINT now causes a specific condition
811 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
812 * bug fix: FILE-POSITION used to signal an error in some cases where
813 ANSI requires it to return NIL.
814 * bug fix: ADJUST-ARRAY is now interrupt-safe.
815 * bug fix: adding and removing fd-handlers is now interrupt-safe.
816 * bug fix: inlined calls to C now ensure 16byte stack alignment on
818 * bug fix: bad type declaration in the CLOS implementation has
819 been fixed. (reported by James Anderson)
820 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
821 (thanks to Lutz Euler)
822 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
823 required by the CLHS. (reported by Samium Gromoff)
824 * bug fix: dead unbound variable references now signal an error.
825 (reported by Marco Monteiro)
826 * bug fix: / with an unused value was being deleted in safe code.
827 (thanks to Marco Monteiro and Kevin Reid)
828 * bug fix: number of characters that can be written onto a single
829 line in a file is unlimited.
830 * bug fix: some GC deadlocks caused by asynchronous interrupts have
831 been fixed by inhibiting interrupts for when GC is disabled.
832 * bug fix: some interrupt safety issues with GETHASH, (SETF
833 GETHASH), CLRHASH and REMHASH have been fixed.
834 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
835 specifier no longer causes infinite recursion.
836 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
837 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
838 * bug fix: an &environment argument with the correct variable information
839 is passed to macros that are expanded during byte compilation.
840 (reported by Samium Gromoff)
841 * bug fix: a logic error was causing the hash function for bignums to
842 have excessive amounts of collisions. (reported by Faré Rideau)
843 * bug fix: modifying the contents of an array could change the return
844 value of SXHASH on that array, which is only allowed for strings
845 and bit vectors. (bug introduced in 0.9.16)
846 * improvement: the x86-64/darwin port now passes all tests (except
847 for the debugger tests) but should still be considered
848 experimental until this is fixed.
849 * improvement: a style-warning is signaled for CASE (etc) clauses with
850 duplicate keys. (thanks to Kevin Reid)
851 * improvement: macos/x86 and macos/x86-64 now use mach exception
852 handlers for dealing with illegal instructions (for trapping and
853 error handling) and memory protection violations (for GC).
855 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
856 * new platform: experimental support for x86-64/darwin (MacOS).
857 * incompatible change: the thread-safe (on most platforms) getaddrinfo
858 and getnameinfo sockets functions are used instead of gethostbyaddr
859 and gethostbyname, on platforms where the newer functions are available.
860 As a result, the ALIASES field of HOST-ENT will always be NIL on these
862 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
863 don't print the startup banner, but behave as if --noinform was passed
864 as a command line argument. (thanks to Kevin Reid)
865 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
866 * optimization: code using alien values with undeclared types is much faster.
867 * optimization: the compiler is now able to open code SEARCH in more cases.
868 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
869 * bug fix: using standardized COMMON-LISP special variables as loop
870 variables no longer signals bogus package lock violations. (reported
872 * bug fix: declaring local loop variables to be of a range-limited type
873 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
874 (reported by Andras Simon)
875 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
876 bugs remain on x86-64.)
877 * bug fix: the #= and ## reader macros now interact reasonably with
878 funcallable instances.
879 * bug fix: type-checks for function arguments were compiled using the
880 compiler policy settings of the wrong lexical environment (in 1.0.2
882 * bug fix: SHADOW accepts characters as string designators, as required
883 by the spec (thanks to Eric Marsden)
884 * bug fix: fixed GC safety issues when foreign functions are called with
885 non-base strings as arguments
886 * bug fix: more consistent error output for fatal-compiler-warnings, like
888 * bug fix: functions with proper names were showing up as NIL in
889 backtraces (reported by Edi Weitz, regression in 1.0.2)
891 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
892 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
893 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
894 produce more efficient code on the x86 if the compiler can determine
895 that (+ INDEX <constant>) does not require a bounds check and FOO
896 has an element type at least 8 bits wide.
897 * bug fix: references to undefined variables are handled the same way
898 in toplevel forms as in the normal compiler
899 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
901 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
902 (thanks to Jon Buller)
903 * improvement: faster compilation times for complex functions
904 * improvement: added readlink support to SB-POSIX (thanks to Richard
907 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
908 * improvement: experimental support for mach exception handling on
909 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
911 * improvement: support for GBK external format.
912 (thanks to Chun Tian (binghe))
913 * improvement: the debugger now displays variables that have been closed
914 over, in code compiled with (DEBUG 2) or higher
915 * improvement: support for executable cores on NetBSD (thanks to
917 * new feature: added a RESTART-FRAME debugger command
918 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
919 be used to provide an implementation for FILE-POSITION on Gray streams
920 (thanks to Eric Marsden)
921 * new feature: add syslog, openlog and closelog support to SB-POSIX
922 (thanks to Richard Kreuter)
923 * optimization: the function call overhead in code compiled with
924 a high DEBUG optimization setting is significantly
925 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
926 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
927 (thanks to Tony Martinez)
928 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
929 evaluated once (reported by Kevin Reid)
930 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
931 works again (thanks to Kilian Sprotte)
932 * bug fix: an error is signaled for tagbodies with duplicate tags
933 (thanks to Stephen Wilson)
934 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
935 * bug fix: Win32 port can now handle foreign code unwinding Lisp
936 stack frames from alien callbacks.
937 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
938 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
939 65k pages (thanks to David Woodhouse)
940 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
942 changes in sbcl-1.0.1 relative to sbcl-1.0:
943 * new platform: FreeBSD/x86-64, including support for threading.
944 * new feature: the compiler stores cross-referencing information
945 about function calls (who-calls), macroexpansion (who-macroexpands)
946 and special variables (who-binds, who-sets, who-references) for code
947 compiled with (< SPACE 3). This information is available through the
948 sb-introspect contrib.
949 * new feature: users may subclass SEQUENCE, and have instances of
950 these classes interoperate with standard Common Lisp functions if
951 a number of methods are defined. (This feature is experimental
952 and the interface subject to change based on feedback from SBCL
953 users and the general community)
954 * improvement: sb-sprof traces call stacks to an arbitrary depth on
955 x86/x86-64, rather than the previous fixed depth of 8
956 * improvement: another pthread back-end of mutex "pthread-futex".
957 * bug fix: non-ascii command-line arguments are processed correctly
958 (thanks to Yaroslav Kavenchuk)
959 * bug fix: non-required arguments were not passed correctly when a method
960 defined using DEFMETHOD was called from a mop-generated method using
961 CALL-NEXT-METHOD (reported by Pascal Costanza)
962 * bug fix: recursion is now permitted in accessors through
963 SLOT-UNBOUND. (reported by Pascal Costanza)
964 * bug fix: an error was signaled at startup if the HOME environment
965 variable was defined, but had an empty value (reported by Peter Van Eynde)
966 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
967 signal a PROGRAM-ERROR, not a BUG.
968 * bug fix: SB-POSIX:READDIR works when built with large file support.
969 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
971 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
972 for better automatic indentation support. (thanks to Matt Pillsbury)
973 * optimization: loading generic functions no longer takes O(n^2) time,
974 proportional to the amount of methods in the generic function
975 (reported by Todd Sabin and Jeremy Brown)
976 * optimization: the FIND and POSITION family of sequence functions
977 are significantly faster on arrays whose element types have been
979 * improvements to the Windows port:
980 ** Intermittent heap corruption problems have been fixed. (thanks
981 to Alastair Bridgewater)
982 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
984 ** Lisp is able to unwind foreign exception frames from alien
985 callbacks. (thanks to Alastair Bridgewater)
987 changes in sbcl-1.0 relative to sbcl-0.9.18:
988 * improvement: experimental support for threading on FreeBSD/x86.
989 (thanks to NIIMI Satoshi)
990 * improvement: runtime option --dynamic-space-size can be used
991 to set the size of the dynamic space reserved on startup.
992 * improvement: floating point modes in effect are now saved in
993 core, and restored on startup.
994 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
995 startup, not time since first call to GET-INTERNAL-REAL-TIME.
996 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
997 threads are not running after *SAVE-HOOKS* have run.
998 * improvement: writes to CLOS instance slots are type-checked in code
999 compiled with (SAFETY 3)
1000 * improvement: floating-point exception handling on FreeBSD (thanks to
1002 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1003 (thanks to Zach Beane)
1004 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1006 * improvement: added support for the Shift-JIS external format.
1007 (contributed by NIIMI Satoshi)
1008 * improvement: callbacks are supported on Linux/PPC. (thanks to
1010 * bug fix: compiler bug triggered by a (non-standard) VALUES
1011 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1012 * bug fix: file compiler no longer confuses validated and already
1013 dumped structurres. (reported by Kaersten Poeck)
1014 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1015 fill-pointer signals a type-error as required. (thanks to
1017 * bug fix: disassemly of funcallable instances works.
1018 * bug fix: single stepping on PPC.
1019 * bug fix: fix thread-safety problems in the type system (generally
1020 manifesting as nonsensical errors like "STRING is a bad type specifier
1021 for sequences" or "The value 1 is not of type FIXNUM")
1022 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1023 (reported by Josip Gracin)
1024 * bug fix: an error is signaled for attempts to displace arrays with
1025 incompatible element types (thanks to Mario Mommer)
1026 * bug fix: more correct handling of wide characters in debug info
1027 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1028 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1029 and don't cause extra consing
1030 * optimization: MAP and MAP-INTO are significantly faster on vectors
1031 whose elements types have been declared.
1032 * Improvements to SB-SPROF:
1033 ** Support for allocation profiling
1034 ** Reduced profiling overhead, especially for long profiling runs
1035 * Improvements to the Windows port:
1036 ** floating point exceptions are now reported correctly.
1037 ** stack exhaustion detection works partially.
1038 ** more accurate GET-INTERNAL-REAL-TIME.
1039 ** better RUN-PROGRAM behaviour in case of errors in the child
1041 ** PROBE-FILE now simplifies pathnames correctly.
1042 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1043 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1044 1st 1970 (although time timezone data will be unreliable).
1045 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1047 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1048 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1049 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1051 * bug fix: two potential GC deadlocks affecting threaded builds.
1052 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1053 returns T (reported by Anton Kazennikov)
1054 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1055 with non-variable places
1056 * bug fix: remove a race condition in the setting of
1057 funcallable-instance functions, this should make threaded CLOS
1058 code more stable against memory faults.
1059 * bug fix: corruption of specials when unbinding is interrupted by an
1060 asynchronous unwind (reported by Hannu Koivisto)
1061 * improvement: the debugger will now also display local variables that
1062 are only used once, for code compiled with a DEBUG optimization quality
1065 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1066 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1067 * incompatible change: External-format support for FFI calls. The
1068 SB-ALIEN:C-STRING no longer implies an ASCII
1069 external-format. Instead the string is subject to external-format
1070 conversion. Additionally return values of type SB-ALIEN:C-STRING
1071 are by default of type (SIMPLE-ARRAY CHARACTER), not
1072 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1073 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1074 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1075 * incompatible change: SB-EXT package no longer contains the
1076 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1077 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1079 * incompatible change: the single-stepper is no longer available
1080 on Alpha, Mips and Sparc platforms.
1081 * minor incompatible change: the direct superclasses of
1082 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1083 not (STANDARD-OBJECT FUNCTION). This makes the
1084 class-precedence-lists of GENERIC-FUNCTION and
1085 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1087 * minor incompatible change: the default stream external format on
1088 non-unicode SBCL is no longer detected from the locale, but is always
1090 * new feature: Add a version of evaluator that uses an interpreter instead
1091 of the compiler. EVAL still uses the compiler by default, to switch it
1092 to use the interpreter, set the value of the variable
1093 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1094 * minor incompatible change: the single-stepper REPL has been merged
1095 with the normal debugger (see the "Stepping" heading of the debugger help
1096 for more details). The debugger command STEP will no longer switch
1097 to the single-stepper REPL.
1098 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1099 for a type now works.
1100 * bug fix: loading of default sysinit file works. (thanks to Leonid
1102 * bug fix: better detection of circularities in the file-compiler.
1103 (reported by Marco Monteiro)
1104 * bug fix: the CL pathname functions now work with files that have
1105 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1106 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1107 systems with Unix98 pty semantics.
1108 * bug fix: ASDF-INSTALL will now work with bsd tar.
1109 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1111 * bug fix: timers expiring in dead threads no longer cause a
1112 type-error (reported by Paul "Nonny Mouse").
1113 * bug fix: thanks to more lightweight single-stepper instrumentation,
1114 code compiled with (DEBUG 3) will compile and execute significantly faster,
1115 and will have more accurate type-inferencing than before
1116 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1117 whose bindings are modified
1118 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1119 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1120 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1121 CL:SOFTWARE-VERSION with proper version
1123 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1124 * feature: implemented the READER-METHOD-CLASS and
1125 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1126 as specified by AMOP.
1127 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1129 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1130 (thanks to Lutz Euler)
1131 * optimization: hashing of general arrays and vectors has been
1132 improved. (reported by Any Fingerhut)
1133 * enhancement: SB-INTROSPECT is now able to find definitions of
1134 profiled functions. (thanks to Troels Henriksen)
1135 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1136 as well, allowing compiler-macros for SETF-functions to expand.
1137 * enhancement: step-instrumentation no longer wraps known
1138 single-value functions with multiple-value context, allowing
1139 better type inference.
1140 * fixed bug #337: use of MAKE-METHOD in method combination now works
1141 even in the presence of user-defined method classes. (reported by
1142 Bruno Haible and Pascal Costanza)
1143 * fixed bug #339(c): if there are applicable methods not part of any
1144 long-form method-combination group, call INVALID-METHOD-ERROR.
1145 (reported by Bruno Haible)
1146 * fixed bug #361: the :FUNCTION initarg in the protocol for
1147 initialization of methods can now be used to override
1148 internally-produced optimized functions. (reported by Bruno
1150 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1151 system-provided lambda expression no longer cause warnings about
1152 unbound #:|pv-table| symbols.
1153 * bug fix: improved the handling of type declarations and the
1154 detection of violations for keyword arguments with non-constant
1156 * bug fix: potentially erronous calls to PATHNAME and
1157 MERGE-PATHNAMES were being flushed in some cases.
1158 (reported by Richard Kreuter)
1159 * bug fix: compiled calls to TYPEP were mishandling obsolete
1160 instances. (reported by James Bielman and Attila Lendvai)
1161 * bug fix: format strings with ~> without matching ~< no longer
1162 trigger an AVER, but signal an understandable error instead.
1163 (reported by Antonio Martinez)
1164 * bug fix: specifying an output-file without a pathname-type for
1165 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1166 of input-file instead of "fasl". (reported by Robert Dodier)
1167 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1168 (reported by James Y Knight).
1169 * bug fix: compiler-macros-function did not consider the environment
1170 argument for shadowing by local functions.
1171 * bug fix: compiler-macros expansion was inhibited by local INLINE
1173 * bug fix: inline expansions of known functions were subject to
1174 step-instrumentation in high debug policies, leading to problems
1175 with type-inference.
1176 * bug fix: compiler failed to differentiate between different CONS
1177 types in some cases.
1178 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1179 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1180 * bug fix: #368: incorrect use of expressed vs. upgraded array
1182 * bug fix: #306a: more precise unions of array types.
1183 * thread-safety improvements:
1184 ** CONDITION-WAIT could return early on Linux, if the thread was
1185 interrupted and subsequently continued with SIGCONT.
1186 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1188 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1189 * added support for the ucs-2 external format. (contributed by Ivan
1191 * minor incompatible change: pretty printing of objects of type
1192 (cons symbol) is, in the default pprint-dispatch-table, now
1193 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1195 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1196 called later in a class's lifetime, possibly as late as when the
1197 first instance of the class is created. Previously,
1198 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1199 class became finalizeable.
1200 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1201 for multibyte external-format streams. (thanks to "vbzoli")
1202 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1203 with :ALLOCATION :CLASS inherited from superclasses of the
1205 * fixed bug: anonymous classes can now be created using the :NAME
1206 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1207 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1208 * fixed bug: core-files saved with :EXECUTABLE T can again be
1209 executed when SBCL_HOME isn't set. (reported by James Knight)
1210 * fixed bug: toplevel LOCALLY forms with declarations could
1211 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1212 * fixed bug: printing from several different threads using different
1213 values of *print-case* could cause invalid output, due to
1214 some internal special variables of the printer not being bound
1215 thread-locally (reported by Max Mikhanosha)
1216 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1217 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1218 (reported by Pascal Costanza)
1219 * fixed bug: FINALIZE-INHERITANCE is called from
1220 REINITIALIZE-INSTANCE on classes when the class has previously
1221 been finalized, as required by AMOP.
1222 * minor code generation optimizations:
1223 ** better register allocation in CLOS dispatching functions
1224 ** overflow detection when coercing signed bytes to fixnums on x86-64
1225 ** is now implemented with one IMUL instruction instead of three shifts
1226 ** more efficient bit-vector access on x86 and x86-64
1227 ** more efficient access to raw structure slots on x86 and x86-64
1228 * fixed some bugs revealed by Paul Dietz' test suite:
1229 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1230 return its argument.
1232 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1233 * feature: thread support on Solaris/x86, and experimental thread support
1235 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1237 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1238 default method for SLOT-UNBOUND.
1239 * minor incompatible change: prevent the user from specializing the
1240 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1241 somewhat counter to the intent of the protocol, I (CSR) think, and
1242 additionally it just doesn't work in SBCL as currently
1243 implemented, thanks to optimizations (that are always valid for
1244 the other three SLOT-VALUEish functions, but not for the setter).
1245 * minor incompatible change: the :SB-LDB feature is now enabled by
1246 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1247 the low-level debugger.
1248 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1249 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1250 down to an SB-SYS:FD-STREAM, allowing direct communication in
1251 more cases. Temporary files and pipes are still used as a fallback
1253 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1254 on the non-reentrant C functions localtime(3) and gmtime(3).
1255 * bug fix: global optimization policy was not visible in LOCALLY and
1257 * bug fix: class objects can be used as specializers in methods.
1258 (reported by Pascal Costanza)
1259 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1260 with a type error. (reported by blitz_ on #lisp)
1261 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1262 failed with a type error. (reported by Pascal Bourguignon)
1263 * bug fix: merging pathnames against defaults with :DIRECTORY
1264 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1265 (reported by James Y Knight)
1266 * bug fix: saving large (>2GB) cores on x86-64 now works
1267 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1268 constant index and a (simple-array (signed-byte 32)) array
1269 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1270 error (patch by Robert J. Macomber)
1271 * feature: TIME now displays the amount of run-time spent in GC
1272 * bug fix: The debugger now does a better job of respecting
1273 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1274 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1275 workaround for bug 403.)
1276 * bug fix: floating point exception handling now works on FreeBSD
1277 (thanks to NIIMI Satoshi)
1278 * fixed some bugs revealed by Paul Dietz' test suite:
1279 ** MISC.641: LET-conversion were not supposed to work in late
1281 * improvements to the Win32/x86 port:
1282 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1283 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1285 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1286 * new feature: source path information is generated for macro-expansion
1287 errors for use in IDE's like Slime (thanks to Helmut Eller)
1288 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1289 * bug fix: compiler does not loop forever on an invalid type in
1291 * improvement: compilation of most CLOS applications is significantly
1293 * optimization: added a limited bytecode compiler for simple toplevel
1294 forms, speeding up compilation and FASL loading
1295 * bug fix: the statistical profiler now properly distinguishes anonymous
1298 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1299 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1300 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1301 into subclasses of the finalized class. Now user calls to
1302 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1303 system return before any subclasses are finalized.
1304 * minor incompatible change: The reader no longer ignores errors
1305 regarding non-existent packages in #+ and #- feature tests.
1306 * new feature: command line options --no-sysinit, --no-userinit to
1307 inhibit loading the corresponding init files
1308 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1309 for sending data through UDP sockets (thanks to François-René Rideau)
1310 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1311 error is signalled instead (thanks to François-René Rideau)
1312 * minor incompatible change: Error signalling behaviour of lexical
1313 operations violating package locks has changed slightly. Refer to
1314 documentation on package locks for details.
1315 * enhancement: EVAL can process IF-expressions without resorting to the
1317 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1318 constant-folded properly due to missing out-of-line functions.
1319 (reported by Mika Pihlajamäki)
1320 * bug fix: LISTEN sometimes returned T even in cases where no data was
1321 immediately available from the stream
1322 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1323 were reversed. (reported by Levente Mészáros)
1324 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1325 when given a vector displaced to an adjustable array. (reported
1327 * bug fix: derivation of float boundaries from numbers outside the
1328 appropriate float range (reported by John Wiseman)
1329 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1331 * bug fix: precomputing cache entries for generic functions with
1332 some subclasses of specializers as yet invalid does not attempt to
1333 fill a cache line with a negative offset. (reported by Levente
1335 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1336 allow condition class objects as arguments to DOCUMENTATION and
1337 (SETF DOCUMENTATION); only find and set documentation for
1338 structure names for the STRUCTURE doc-type. (suggested by Gary
1340 * improvements to the Win32/x86 port:
1341 ** (user-homedir-pathname) and default initialization file
1342 locations now know about the user's "Documents and Settings"
1343 directory (thanks to Yaroslav Kavenchuk)
1344 ** run-program is implemented (thanks to Mike Thomas)
1345 ** sockets support (thanks to Timothy Ritchey)
1346 ** better backtrace support (thanks to Alastair Bridgewater)
1347 ** sb-grovel supported
1348 ** asdf-install and sb-posix work somewhat
1349 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1350 * improvements to the Solaris/x86 port:
1351 ** works on Solaris 11/Solaris Express
1352 ** floating-point exception handling support
1353 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1354 * fixed some bugs revealed by Paul Dietz' test suite:
1355 ** REMOVE-METHOD returns its generic function argument even when
1356 the method is not one of the generic functions' methods.
1357 ** objects declared as MEMBER types can be admissible arguments to
1358 structure accessors.
1359 ** printing characters should simply be printed by the FORMAT ~:C
1361 ** compiler failure when compiling functions with hairy constant
1362 defaults for optional parameters.
1363 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1364 function, which is already optimized.
1366 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1367 * new platform: experimental support for SBCL x86/Darwin, including
1368 MacOS X 10.4.5 on Intel.
1369 * new feature: Unicode character names are now known to the system
1370 (through CHAR-NAME and NAME-CHAR).
1371 * new feature: the filesystem location of SBCL's core file is
1372 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1373 * minor incompatible change: the contrib modules SB-POSIX and
1374 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1375 this change is to make it easier to distribute
1376 location-independent binaries.
1377 * bug fix: as implied by AMOP, standardized classes no longer have
1378 slots named by external symbols of public packages. (reported by
1380 * optimization: calling functions via constant symbols -- as in
1381 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1382 via the function object as in (FUNCALL #'FOO).
1383 * optimization: on x86 and x86-64, the calling convention for the
1384 case of dealing with an unknown number of values has been altered
1385 to be friendlier to the prediction heuristics implemented,
1386 particularly with reference to CALL and RET pairing. (thanks to
1387 Alastair Bridgewater)
1388 * optimization: on x86, the code for access to thread-local symbol
1389 values and binding/unbinding of thread-local symbols is smaller.
1390 (thanks to Alastair Bridgewater)
1391 * enhancement: CONSTANTP is now able to determine constantness of
1392 more complex forms, including calls to constant-foldable standardized
1393 functions and some special forms beyond QUOTE.
1394 * fixed bug: occasional GC crashes on Solaris/x86
1395 * optimization: x86-64 supports stack allocation of results of simple
1396 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1397 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1398 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1399 (thanks to James Knight)
1400 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1401 by the standard (thanks to Stephen Compall)
1403 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1404 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1405 be used for bundling the runtime and the core file into one
1406 executable binary. This feature is not currently supported on all SBCL
1407 platforms. (thanks to James Bielman and NIIMI Satoshi)
1408 * new feature: a generational or ephemeral garbage collector is now
1409 the default on the PowerPC platform (both Linux and Darwin). The
1410 old Cheney (stop and copy) collector is a build-time option.
1411 (thanks to Cyrus Harmon, after Raymond Toy)
1412 * minor incompatible change: the method by which SBCL finds its
1413 contributed modules has changed; it no longer relies on symbolic
1414 links from an $SBCL_HOME/systems directory, but searches directly
1415 in the subdirectories of $SBCL_HOME.
1416 * enhancement: the dynamic heap size on the Linux/PPC platform is
1417 markedly larger, even using the older Cheney garbage collector.
1418 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1419 certain complicated string types. (reported by Gary King)
1420 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1421 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1422 * fixed bug: DOCUMENTATION on structures no longer signals an
1423 error if no structure type of the right name exists. (reported by
1425 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1426 applicable non-standard primary or :AROUND method on
1427 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1428 no longer cause unbound variable errors. (reported by Kevin Reid)
1429 * fixed bug: metacircle resolution in cases where methods have slots
1430 added before the slots from STANDARD-METHOD. (reported by Jean
1432 * fixed bug: the Power PC assembly code for calling into lisp
1433 sometimes computed its return address wrongly (depending on the
1434 15th bit of the address, fixed at link time). This used to
1435 manifest itself in a segmentation violation while building PCL.
1436 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1437 many others over the years)
1438 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1439 the stack pointer (treated as a signed integer) is negative.
1440 (thanks to Peter van Eynde)
1442 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1443 * new platform: experimental support for the Windows operating
1444 system has been added. (thanks to Alastair Bridgewater)
1445 * fixed several bugs in and robustified the PPC FFI (including
1446 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1447 * bug fix: allow non-simple string symbol names (reported by Paul
1449 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1451 * bug fix: saving a core corrupted callbacks on x86/x86-64
1452 * bug fix: closed a loophole in metacircularity detection and
1453 grounding in the PCL implementation of CLOS.
1454 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1455 (reported by tomppa on #lisp)
1456 * bug fix: clear the direction flag on Lisp -> C transitions, as
1457 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1458 (reported by Andrej Grozin and Hendrik Maryns)
1459 * optimization: major improvements to GC efficiency on GENCGC platforms
1460 * optimization: faster implementation of EQUAL
1461 * optimization: emit more efficient opcodes for some common
1462 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1463 * optimization: several other minor code-generation improvements on x86-64
1464 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1466 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1467 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1468 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1469 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1470 by ANSI as a generic function, and for consistency (SETF
1471 GENERIC-FUNCTION-NAME) is treated likewise.
1472 * fixed bug #233.b: make constraint propagation notice when a variable
1473 value is changed after it is referenced but before it is used
1474 * fixed bug #296: no more arbitrary behaviour from filenames with
1475 odd characters as --load arguments. (reported by Adam Warner)
1476 * fixed bug #390: :CHARACTER-SET pathname components now work as
1477 expected. (reported by Tim Daly Jr)
1478 * fixed bug #391: complicated :TYPE intersections in slot
1479 definitions no longer cause an error in PCL internals.
1480 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1481 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1482 returning the number of octets which would be written to the
1483 file-stream. (thanks to Robert J. Macomber)
1484 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1485 arguments to the internal stream functions. (thanks to David
1487 * bug fix: stack exhaustion is now handled on the x86/SunOS
1488 platform. (thanks to Daisuke Homma)
1489 * bug fix: more accurate ROOM results on GENCGC platforms
1490 * optimization: improved type inference for arithmetic-for
1491 index variables in LOOP
1492 * optimization: faster floating-point SQRT on x86-64
1493 * fixed some bugs revealed by Paul Dietz' test suite:
1494 ** DOCUMENTATION returns NIL instead of "" for method combinations
1495 that don't have a docstring
1497 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1498 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1499 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1500 therefore are not customizeable by user code (as seems to be at
1501 least permitted and maybe required by AMOP). As a consolation,
1502 however, the SBCL implementation of these functions now calls
1503 REINITIALIZE-INSTANCE as specified by AMOP.
1504 * bug fix: slot-definition documentation is propagated as per ANSI
1505 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1506 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1507 argument, as do eslotd initialization methods. (from Pascal
1508 Costanza's "Closer" project)
1509 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1510 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1512 * bug fix: it is now possible to have more than one subclass of
1513 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1514 (reported by Bruno Haible, Pascal Costanza and others)
1515 * bug fix: the dependent update protocol now works for generic
1516 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1517 and Pascal Costanza)
1518 * bug fix: condition-class instances corresponding to
1519 DEFINE-CONDITION forms are now created eagerly. (reported by
1520 Kalle Olavi Niemitalo on comp.lang.lisp)
1521 * bug fix: floating point printing is more accurate in some
1522 circumstances. (thanks to Simon Alexander)
1523 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1524 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1525 * bug fix: callbacks on OS X now preserve stack-alignment.
1526 (thanks to Cyrus Harmon)
1527 * enhancement: the x86-64 disassembler is much better at
1528 disassembling SSE instructions. (thanks to Lutz Euler)
1529 * enhancement: CHECK-TYPE on a variable now allows type-inference
1530 (thanks to Vincent Arkesteijn)
1531 * optimization: improved performance of EUC-JP external format.
1532 (thanks to NIIMI Satoshi)
1533 * optimization: performance improvements to IO on file streams of
1534 :ELEMENT-TYPE CHARACTER
1535 * optimization: much faster memory allocation on x86-64
1536 * optimization: faster garbage collections (latency and throughput)
1538 * optimization: faster bignum subtraction and division on x86 and x86-64
1539 (thanks to Lutz Euler)
1540 * optimization: more accurate type-inference for loops that use a
1541 floating point index variable or a negative step.
1543 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1544 * bug fix: add a workaround to SBCL looping infinitely at startup on
1545 Linux kernels with apparently buggy implementations of personality().
1546 (thanks to Svein Ove Aas)
1547 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1548 (thanks to David Lichteblau)
1549 * bug fix: local bindings shadow global symbol macros for
1550 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1551 * optimization: non-open coded uses of numeric comparison operators
1552 (e.g. >) no longer cons when called with more than one parameter
1553 on platforms supporting dynamic-extent allocation.
1554 * enhancement: saving cores with foreign code loaded is now supported
1555 on MIPS/Linux in addition to the previously supported platforms.
1556 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1557 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1558 * bug fix: division by zero in sb-sprof when no samples were collected
1559 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1560 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1561 (thanks to Alexander Kjeldaas)
1562 * new feature: ignoring the return values of destructive functions
1563 like NREVERSE signals a compile-time style-warning.
1564 (thanks to Kevin Reid)
1565 * new feature: the alignment of alien structure fields can be
1566 explicitly specified. (thanks to Cyrus Harmon)
1567 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1568 and dump core on SIGQUIT
1570 ** incompatible change: threads do not inherit values of specials
1571 from their parents (see manual)
1572 ** bug fix: threads stacks belonging to dead threads are freed by the
1573 next exiting thread, no need to gc to collect thread stacks anymore
1574 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1575 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1576 ** bug fix: dynamic variable and thread start related gc lossage
1577 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1579 * fixed some bugs revealed by Paul Dietz' test suite:
1580 ** SUBTYPEP is slightly more accurate on heinously complicated
1581 CONS types where some of the members have uncertain (in the
1582 NIL, NIL sense) type relationships to each other.
1584 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1585 no longer purified unless :PURIFY T is explicitly specified.
1586 ** Non-purified cores are significantly smaller than before
1588 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1589 * new feature: timers based on Zach Beane's excellent timer package
1590 * added support for the following external formats: koi8-u,
1591 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1592 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1593 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1594 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1595 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1596 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1597 * incompatible change: a threaded SBCL will no longer revert to
1598 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1599 * bug fix: interrupts are disabled until startup is complete; no
1600 more sigsegvs when receiving a signal to soon
1601 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1603 * bug fix: add a workaround for the memory randomization features in
1604 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1605 workaround will only be in effect on systems with the proc filesystem
1607 * bug fix: printing objects of type HASH-TABLE signals a
1608 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1610 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1611 have been running for over 50 days. (reported by Gilbert Baumann)
1612 * bug fix: the logic for getting names of functions gets less
1613 confused when confronded with alternate-metaclass
1614 funcallable-instances. (reported by Cyrus Harmon)
1615 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1616 consistent, even on internal alternate-metaclass objects.
1617 * bug fix: flush closure information collected by physical
1618 environment analysis prepass before the main pass. (bug reported
1620 * bug fix: compiler pack phase does not modify a hashtable, which is
1621 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1622 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1623 may be expanded. (reported by Alexander <malishev> on c.l.l)
1624 * bug fix: no more style-warnings when compiling code using LAST
1625 under high-SPEED low-SPACE settings. (reported by David Wallin
1627 * fixed some incompatibilities between SBCL's MOP and the MOP
1629 ** the METAOBJECT class is now implemented;
1630 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1631 STANDARD-OBJECT, as required;
1632 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1633 now compatible (as required by VALIDATE-SUPERCLASS); there
1634 remains a consistency requirement over the presence or absence
1635 of the FUNCTION class in the superclass list of finalized
1636 classes; see the manual for more details;
1637 ** the :AROUND method for COMPUTE-SLOTS on
1638 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1639 requested slot ordering.
1641 ** bug fix: parent thread now can be gc'ed even with a live
1643 ** bug fix: binding a special with PROGV to no value is not
1644 the same as that symbol not having been bound (thanks to
1646 ** bug fix: binding specials is thread safe (thanks to
1648 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1649 and SB-SPROF do not die with 'no handler for signal XX in
1650 interrupt_handle_now(..)' anymore
1651 ** bug fix: WITH-TIMEOUT works with multiple running threads
1652 * fixed some bugs revealed by Paul Dietz' test suite:
1653 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1654 the :method-class keyword argument.
1656 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1657 * new port: the Solaris operating system on x86 processors is now
1658 mostly supported, though some rough edges in the environment
1659 remain. (thanks to Daisuke Homma)
1660 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1661 space for its heap. (thanks to Thiemo Seufer)
1662 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1663 closures. (thanks to Thiemo Seufer)
1664 * minor incompatible change: eof selects abort in the debugger.
1665 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1666 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1668 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1669 deprecated, and will go away in a future revision of SBCL.
1670 * minor incompatible change: GC-ON and GC-OFF are no longer
1671 implemented with a counter, it does not matter how many times gc
1672 is switched on or off
1673 * bug fix: discriminating functions for generic function classes
1674 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1675 make invalid assumptions about method precedence order. (reported
1677 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1678 platforms. (thanks to Thiemo Seufer)
1679 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1680 * bug fix: correct pathname printing with printer escaping is on.
1681 (thanks to Kevin Reid)
1682 * bug fix: complex VOP definitions in "user-space" no longer trigger
1683 package locks. (reported by Zach Beane)
1684 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1685 for funcallable-instance functions, and is no different from
1687 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1688 characters in the current readtable. (reported by Nicholas Neuss)
1689 * bug fix: SUBTYPEP on various CONS types returns more a more
1690 accurate acknowledgment of its certainty.
1691 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1692 lists in some cases. This partially fixes bug 384.
1693 * flush all standard streams before prompting in the REPL and the
1695 * bug fix: signal handling and triggering gc do not conflict
1696 directly anymore, in particular a high frequency sb-sprof does
1697 not prevent gc from running
1698 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1699 approximation for timezone and DST information between the
1700 universal time epoch and the smallest negative 32-bit time_t.
1701 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1702 year 1899 so long as the encoded time is non-negative.
1703 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1704 the correct answer for non-constant rotate amounts when performing
1705 an inline 32-bit rotation.
1707 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1708 there is only one thread in the session
1709 ** bug fix: memory leak for streams created in one thread and
1710 written to in another
1711 ** bug fix: lockup when compiled with gcc4
1712 ** bug fix: race that allows the gc to be triggered when gc is
1714 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1715 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1717 ** bug fix: finished threads are gc'ed properly
1718 * fixed some bugs revealed by Paul Dietz' test suite:
1719 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1720 has arguments with a different set of applicable methods from
1721 the orignal arguments.
1722 ** The type error thrown by MAP now has a correct expected-type
1724 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1725 name a compiled function.
1726 ** Three MISC tests where a large bignum was improperly coerced to
1727 a float that couldn't represent that bignum during type
1728 derivation were fixed.
1729 ** SUBTYPEP can now handle types involving the negation of a
1730 list-form FUNCTION type.
1731 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1732 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1733 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1735 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1736 * New feature: Experimental support for bivalent streams: streams
1737 opened with :element-type :default now allow character and binary
1738 (unsigned-byte 8) I/O
1739 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1740 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1742 * bug fix: no more highly sporadic "couldn't check whether ~S is
1743 readable" when reading a stream and an interrupt hits in the middle
1744 of a select system call
1745 * compiler better recognizes complex arrays (reported by Eduardo
1747 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1748 for variables on SBCL built with linkage-tables. (reported by Luis
1750 * various error reporting improvements.
1751 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1752 (Thanks to Thiemo Seufer)
1753 * bug fix: nested reader invokations work correctly
1754 * bug fix: it is possible to have simultaneous references to foreign
1755 code and foreign data with the same name.
1757 ** added x86-64 support
1758 ** incompatible change: the threading api now works with thread
1759 objects instead of thread ids
1760 ** bug fix: threads are protected from signals and interruption when
1761 starting up or going down
1762 ** bug fix: a race where an exiting thread could lose its stack to gc
1763 ** bug fix: don't halt on infinite error in threads if possible
1764 ** fixed numerous gc deadlocks introduced in the pthread merge
1765 ** bug fix: fixed thread safety issues in read and print
1766 ** bug fix: debugger doesn't hang on session lock if interrupted at
1767 an inappropriate moment
1768 ** bug fix: run-program is now thread safe(r)
1769 ** bug fix: inner with-recursive-lock no longer releases the mutex
1770 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1771 * fixed some bugs revealed by Paul Dietz' test suite:
1772 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1773 EXPECTED-TYPE slots filled.
1774 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1776 ** MAKE-CONDITION accepts classes as type-designators.
1777 ** COMPILE may never return NIL.
1778 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1779 range before calling Unix time functions
1781 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1782 * numerous signal handling fixes to increase stability
1783 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1784 * minor incompatible change: we now correctly canonize default
1785 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1786 as per the MOP, rather than the historical (INITARG INITFUNCTION
1787 INITFORM). (reported by Bruno Haible)
1788 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1789 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1790 for more information.
1791 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1792 pathname is a directory pathname.
1793 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1794 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1796 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1797 :METACLASS argument in addition to a class name. (reported by
1798 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1799 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1800 (reported by Bruno Haible; patch from Gerd Moellmann)
1801 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1803 * bug fix: more cleanups to the floating point exception handling on
1804 x86-64 (thanks to James Knight)
1805 * bug fix: the compiler does not try to constant fold calls of
1806 COERCE and BIT-* functions when they return freshly constructed
1807 objects. (reported by Nikodemus Siivola and Paul Dietz)
1808 * optimization: improved the MIPS versions of generic (in the
1809 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1810 * optimization: direct conversion of (unsigned-byte 32) to floats on
1811 the PowerPC platform.
1812 * optimization: structure instances with raw slots now use less
1813 memory, and probably show better memory locality. (thanks to
1815 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1816 are treated as requests for stack allocation on the x86-64,
1817 Alpha-32, PPC and SPARC platforms.
1818 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1819 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1820 (thanks to Tony Martinez)
1822 ** gcing a dead thread can no longer lead to lockups
1823 ** threads block signals until they are set up properly
1824 ** errno is no longer shared by threads
1825 ** interrupt-thread restores the eflags register on x86
1826 ** fixed some lockups due to gc/thread interaction
1827 * fixed some bugs revealed by Paul Dietz' test suite:
1828 ** invalid dotted lists no longer raise a read error when
1829 *READ-SUPPRESS* is T
1830 ** signal an error if a symbol that names a declaration is used
1831 as the name of a type, or vice versa
1832 ** allow using the (declare (typespec var*)) abbreviation for
1833 (declare (type typespec var*)) with all type specifiers
1834 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1835 ** always return NIL from PPRINT-POP when OBJECT is NIL
1836 ** don't signal errors when pretty-printing malformed LABELS,
1837 FLET or MACROLET forms
1838 ** declarations in a DOLIST body are also in scope for the
1840 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1842 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1845 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1846 * fixed cross-compiler leakages that prevented building a 32-bit
1847 target with a 64-bit host compiler.
1848 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1849 opened with :IF-EXISTS :OVERWRITE.
1850 * fixed bug 281: error for an invalid qualifier in a short-form method
1851 combination method is not signalled until the faulty method is called.
1852 * bug fix: iteration variable type inferrer failed to deal with open
1853 intervals. (reported by Alan Shields)
1854 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1855 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1856 or more runtime options were provided to the sbcl binary.
1857 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1858 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1859 * optimization: there's now a fast-path for fixnum arguments in the
1860 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1861 * optimization: the code generated on x86-64 is more compact thanks
1862 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1863 * bug fix: floating-point exception handling now partly works on
1864 x86-64. (Thanks to James Knight)
1865 * improvement to the MIPS backend from Thiemo Seufer: C-style
1866 64-bit long long arguments and return values to alien functions
1868 * fixed some bugs revealed by Paul Dietz' test suite:
1869 ** the type-error signalled from WARN has a filled-in DATUM slot.
1870 ** the type-error required when a stream is not associated with
1871 a file has the stream as its datum.
1872 ** type-errors on single-floats on x86-64 no longer have
1873 :INVALID-OBJECT as the datum
1874 ** the type-errors signalled for invalid function names now have
1875 a correct expected type
1876 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1877 for structures defined with a :TYPE. Documentation strings for
1878 typed structures are no longer immediately discarded
1879 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1880 broadcast streams and synonym streams. FILE-LENGTH now also works
1881 on broadcast streams.
1883 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1884 * incompatible change: the --noprogrammer option, deprecated since
1885 version 0.7.5, has been removed. Please use the equivalent
1886 --disable-debugger option instead.
1887 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1889 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1890 inoperational for a while now) has been completely removed.
1891 * null lexical environments are now printed as #<NULL-LEXENV>,
1892 significantly reducing the amount of clutter in typical backtraces.
1893 * documentation on weak pointers, finalization, and after GC hooks
1894 has been added to the manual.
1895 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1896 as other specialized array types, is much faster. SUBSEQ and
1897 COPY-SEQ on such arrays have also been sped up.
1898 * optimization: EQL is now more efficient when at least other argument
1899 is known to be of type (OR FIXNUM (NOT NUMBER)).
1900 * fixed bug: the runtime is now less vulnerable to changes in the
1901 size of the SBCL object on OS X, and virtual memory is reserved for
1902 all spaces that need to be at a fixed address.
1903 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1904 * fixed bug: finalizers and after GC hooks that cause consing are now
1906 * fixed bug: compiler error messages and summaries are now printed to
1907 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1908 * fixed inference of the upper bound of an iteration variable.
1909 (reported by Rajat Datta).
1910 * fixed bug 211e: calling local functions with duplicated constant
1911 keyword argument no longer causes a bogus style warning about an
1913 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1914 ftype declaration to be disregarded. (reported by Dave Roberts)
1915 * fixed bug 373: caused by erronous compilation of references to alien
1916 variables in the runtime on ppc/darwin.
1917 * fixed bug 376: CONJUGATE type deriver.
1918 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1919 (reported by Baughn on #lisp)
1920 * a cross-compiler bug on non-x86 platforms has been identified and
1921 fixed. (thanks to Bruno Haible)
1922 * improvements to the MIPS runtime code for increased stability.
1923 (thanks to Thiemo Seufer)
1924 * increased the maximimum compact environment size to allow
1925 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1926 * partial workaround for bug 135: don't name the function we're
1927 calling for hairy cases of EVAL, so as not to accumulate one environment
1928 entry per call to EVAL. (reported by Kevin Reid)
1929 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1930 * optimization: type testing for non-vector arrays should be faster.
1931 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1933 * bug fix: setting 31st element of a bit vector to zero did not work
1935 * bug fix: redefining a class definition which failed due to a
1936 previous accessor / function clash now works (but see BUGS entry
1937 #380 for more problems in this area). (thanks to Zach Beane)
1938 * the long form of DEFINE-METHOD-COMBINATION disables method group
1939 checking when given a single method group with pattern *. (thanks
1941 * on x86 compiler supports stack allocation of results of simple
1942 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1943 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1944 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1945 * fixed some bugs related to Unicode integration:
1946 ** the restarts for recovering from input and output encoding
1947 errors only appear when there is in fact such an error to
1949 * fixed some bugs revealed by Paul Dietz' test suite:
1950 ** MISC.549 and similar: late transformation of unsafe type
1951 assertions into derived types caused unexpected code
1953 ** SCALE-FLOAT type deriver is less wrong.
1954 ** type derivers for EXP, LOG and similar functions compute result
1955 types for complex arguments better.
1956 ** (MISC.563) CONJUGATE type deriver works for very restricted
1958 ** out-of-line type testers for character strings are available.
1959 ** EQUAL compiler transform understands specialness of objects
1961 ** accessing double-floats stored on the stack now works on x86-64.
1962 ** debugger internals could sometimes create invalid lispobjs,
1963 resulting in GC crashes.
1964 ** MISC.548: type check weakening can convert required type into
1966 ** initialization forms for bindings are not in scope of free special
1969 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1970 * incompatible change: thread support for non-NPTL systems has
1971 been removed - locking is buggy and unreliable. A threaded
1972 SBCL build will now warn at startup and refuse to create
1973 new threads, unless futex support is detected in the kernel
1974 * incompatible change: the top level REPL now has only an ABORT
1975 restart associated with it, not TOPLEVEL and ABORT as it used to.
1976 TOP and TOPLEVEL are now available as debugger commands for
1977 returning to the top level.
1978 * incompatible change: forms evaluated in the REPL now use the
1979 global optimization policy.
1980 * incompatible change: user- and system-initialization files are
1981 no longer processed with LOAD, but by READ and EVAL; hence the
1982 global optimization policy, startup package, readtable, etc,
1984 * The .fasl file format number has been incremented because of
1985 various incompatible changes.
1986 * internal entry point details and argument counts no longer appear
1987 in backtraces unless explicitly requested by setting
1988 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1989 * built-in and standard functions no longer have names like "top
1990 level local call to FOO".
1991 * fixed bug 32: functions defined in non-null lexical environments
1992 now have more legible printed representation
1993 * fixed bug 33: functions defined in non-null lexical environemnts
1994 are now more amenable to inspection by INSPECT.
1995 * workaround for bug 354: XEPs no longer appear in backtraces unless
1996 explicitly requested.
1997 * fixed bug: receiving the signal which results from attempting to
1998 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1999 SIGBUS on other *BSDs) on architectures where the C stack is also
2000 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2001 to debugger confusion or wild instability. (reported by Cheuksan
2003 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2004 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2005 (reported by Lutz Euler)
2006 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2007 compiled code. (reported by Paul Dietz)
2008 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2009 specialized parameter to a method to something that is not TYPEP
2010 the specializer is now possible.
2011 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2012 face of package deletion.
2013 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2014 pathname. (reported by David Tolpin on c.l.l)
2015 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2016 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2017 STRING-STREAM and FILE-STREAM, respectively.
2018 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2019 than previously; in addition, its test suite is now run on build.
2020 (thanks to Luke Gorrie)
2021 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2022 * optimization: added a immediate representation for single-floats
2024 * fixed some bugs revealed by Paul Dietz' test suite:
2025 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2026 ** attempting to create a package with a colliding nickname causes
2027 correctable errors to be signalled.
2028 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2029 ** several x86-64 backend bugs related to sign-extension of immediate
2032 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2033 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2034 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2036 * fixed loading of multiply forward-referenced layouts.
2037 (thanks to Cheuksan Wang)
2038 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2039 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2040 (see COMPILE-FILE documentation for details of :PRINT option)
2041 * fixed bugs 19 and 317: fixed-format floating point printing is
2042 more accurate. This also fixes a bug reported by Adam Warner
2043 related to the ~@F format directive.
2044 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2046 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2047 dispatch table if the from-char is a dispatch macro character.
2048 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2049 by the wordsize no longer ignore the last word. (reported by Lutz
2051 * fixed bug in type checking of dynamic-extent variables. (reported
2053 * optimization: sequence traversal functions use their freedom to
2054 coerce function designators to functions.
2055 * optimization: code with many calls to CLOS methods specialized on
2056 CLOS classes has had redundant type checks removed.
2057 * optimization: added declarations to speed up operations that access
2058 the internal character database (for example STRING-UPCASE)
2059 * optimization: comparison operations between floats and sufficiently small
2060 fixnums no longer create extra rationals
2061 * fixed some bugs related to Unicode integration:
2062 ** portions of multibyte characters at the end of buffers for
2063 character-based file input are correctly transferred to the
2064 start of the buffer at the next read.
2065 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2066 passing it through to OPEN.
2067 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2068 argument given to internal calls to OPEN.
2069 ** the built-in comment readers (introduced by character sequences
2070 ";" and "#|") are more forgiving to encoding errors; they will
2071 STYLE-WARN and then attempt to resync the stream at a character
2072 boundary. (thanks to Teemu Kalvas)
2073 * fixed some bugs in the x86-64 port:
2074 ** Negative short int return values from c-calls are sign-extended
2076 ** The stack is aligned to 16-bytes for c-calls, as required by
2077 the ABI. (thanks to Cheuksan Wang)
2078 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2079 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2080 for enums. (thanks to Vincent Arkesteijn)
2081 ** Multiple small optimizations and bugfixes for floating point
2083 * fixed some bugs revealed by Paul Dietz' test suite:
2084 ** Space, Tab, Linefeed, Return and Page have the invalid
2085 secondary constituent character trait.
2086 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2088 ** WITH-INPUT-FROM-STRING should only update the index place on
2090 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2091 works more reliably.
2092 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2093 with one-dimensional arrays with fill pointers.
2094 ** TYPE-OF failed on a complex with an integer realpart and a
2096 ** compiler failure during type inference for the code of form
2097 (IF (EQL X (THE ...)) ...) (MISC.535).
2099 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2100 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2101 platform. The port supports 61-bit fixnums, large memory spaces
2102 and reloading shared object files.
2103 * enhancement: saving cores with foreign code loaded is now
2104 supported on ppc/Darwin in addition to the previously supported
2106 * enhancement: the statistical profiler now walks deeper into the
2107 call stack for more meaningful call-graphs and accrued time
2108 reports (x86/x86-64 only). It also now reports time spent in
2110 * enhancement: it is now possible to trace most individual methods
2111 of a generic function in addition to tracing the generic function
2113 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2115 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2116 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2117 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2118 produces an error. (thanks to Vincent Arkesteijn)
2119 * bug fix: NAMESTRING on pathnames with :WILD components in their
2120 directories works correctly. (thanks to Artem V. Andreev)
2121 * fixed bug 125: compiler preserves identity of closures. (reported
2123 * bug fixed: functions with &REST arguments sometimes failed with
2124 "Undefined function" when compiled with (DEBUG 3). (reported by
2126 * bug fix: overflow during compiling of setting element of a bit
2127 vector with constant index and value. (reported by Timmy Douglas)
2128 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2129 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2130 * on x86 compiler partially supports stack allocation of dynamic-extent
2132 * GO and RETURN-FROM do not check the extent of their exit points
2133 when compiled with SAFETY 0.
2134 * fixed some bugs related to Unicode integration:
2135 ** encoding and decoding errors are now much more robustly
2136 handled; it should now be possible to recover even from invalid
2137 input or output to the terminal. (thanks to Teemu Kalvas)
2138 ** provided a first cut at implementing STRING-TO-OCTETS and
2139 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2140 ** altered the SB-MD5 contributed module slightly, changing the
2141 interface just enough for it to be supportable for builds where
2142 lisp characters are not eight bits.
2143 * fixed some bugs revealed by Paul Dietz' test suite:
2144 ** the FORMATTER-generated functions for ~V[ conditionals require
2145 the correct number of arguments.
2146 ** READ-FROM-STRING returns the mandated second value when applied
2147 to displaced strings.
2148 ** the #\Rubout and #\Backspace characters are treated as invalid
2149 constituent characters by the tokenizer.
2151 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2152 * new feature: reloading changed shared object files with
2153 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2154 * new feature: references to foreign variables and functions
2155 can now be compiled and loaded before the corresponding shared
2156 object file is loaded, as long as the foreign definitions are
2157 available at runtime.
2158 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2159 supported. (thanks to Dan Debertin)
2160 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2161 just keywords. (thanks to Vincent Arkesteijn)
2162 * fixed bug #331: structure-class instances corresponding to
2163 DEFSTRUCT forms are now created eagerly.
2164 * fixed bug #345: backtraces from calls to undefined functions work
2165 on x86 as well. Related bug #61 is now also partially fixed on x86
2166 (backtraces from throws to unknown catch tags.)
2167 * bug fix: lambda-list parsing is now stricter vrt. order and number
2168 of lambda-list keywords.
2169 * bug fix: as specified by AMOP, an error is signalled if a
2170 class-option appears multiple times in a DEFCLASS form. (reported
2172 * bug fix: RANDOM can be compiled when the compiler derives the type
2173 of its numeric argument as a disjoint set of small integers.
2174 (reported by Paul Dietz)
2175 * bug fix: starting a core saved with shared objects loaded when
2176 those objects are not available no longer causes threaded SBCL to
2177 hang. (reported by Sean Ross)
2178 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2180 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2181 argument, which must always be NIL. (reported by Kalle Niemitalo)
2182 * bug fix: printing 1.0d+23 no longer results in an error.
2183 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2184 * bug fix: structure slot setters preserve evaluation order. (thanks
2186 * fixed some bugs related to Unicode integration:
2187 ** RUN-PROGRAM can allow its child to take input from a Lisp
2188 stream. (reported by Stefan Scholl)
2189 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2190 locales. (reported by Ken Causey)
2191 * fixed some bugs revealed by Paul Dietz' test suite:
2192 ** INCF, DECF and REMF evaluate their place form as specified in
2194 ** FORMATTER expands ~{ ~} iteration directives with V or #
2195 parameters correctly.
2196 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2197 consequent uses no arguments correctly.
2198 ** the system has a partial understanding of the (COMPLEX RATIO)
2200 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2203 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2204 * new feature: a build-time option (controlled by the :SB-UNICODE
2205 keyword feature, enabled by default) for building the system with
2206 support for the entire 21-bit character space defined by the
2208 * new feature: the system now has rudimentary external-format
2209 support; the primary user-visible change at this time is that
2210 characters with the high bit set (such as lower-case-e-acute) will
2211 print correctly to a terminal in a UTF-8 environment.
2212 * minor incompatible change: BASE-CHAR no longer names a class;
2213 however, CHARACTER continues to do so, as required by ANSI.
2214 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2215 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2216 has been moved to the SB-EXT package (temporarily re-exported from
2218 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2219 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2221 * fixed bug #351: better error-handlind and reporting for malformed
2223 * fixed bug #350: bignum-printing is now more memory-efficient,
2224 allowing printing of very large bignums, eg. (expt 2 10000000).
2225 (reported by Bruno Haible)
2226 * fixed bug #302: better primitive-type selection for intersection
2228 * fixed bug #308: non-graphic characters now all have names, as
2229 required. (reported by Bruno Haible)
2230 * bug fix: redefining a class with different superclasses now correctly
2231 removes it from the direct-subclasses of its previous superclasses.
2232 (reported by David Morse)
2233 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2234 new value now works. (reported by Bruno Haible)
2235 * bug fix: correct canonicalization of multiple non-standard slot
2236 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2237 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2238 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2239 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2240 now exists, an signals an error.
2241 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2242 during macroexpansion for non-iteration variables as well. (reported
2243 by Bruno Haible for CMUCL)
2244 * bug fix: Cyclic structures and unprintable objects in compiler
2245 messages no longer cause errors. (reported by Bruno Haible)
2246 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2247 and READ-FROM-STRING all now return a primary value of NIL if
2248 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2249 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2250 (reported by Bruno Haible for CMUCL)
2251 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2252 do not designate a condition. (reported by Bruno Haible for
2254 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2255 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2256 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2257 permitting resolution in favour of any of the conflicting symbols.
2258 (reported by Bruno Haible for CMUCL)
2259 * bug fix: EQUAL compiler optimizations is less aggressive on
2260 strings which can potentially compare true despite having distinct
2261 specialized array element types.
2262 * bug fix: unit enumerations can be defined without dividing by
2263 zero. (thanks to Vincent Arkesteijn)
2264 * FORMAT compile-time argument count checking has been enhanced.
2265 (report from Bruno Haible for CMUCL)
2266 * a partial workaround for the bug 262: the compiler does not try to
2267 inline-expand a local function doing RETURN-FROM from a deleted
2268 BLOCK. (thanks to Peter Denno for the bug report and to David
2269 Wragg for the simple test case)
2270 * fixed some bugs revealed by Paul Dietz' test suite:
2271 ** RENAME-PACKAGE allows all package designators as new package
2273 ** constraint propagation and lambda variable substitution are
2274 more cautious in dealing with partially deleted code.
2275 ** compiler sometimes lost reoptimization passes.
2276 ** CERROR, given a condition as condition designator, passes its
2277 remaining arguments to the continue format control without
2279 ** Case-altering FORMAT directives work correctly on non-ASCII
2281 ** The REAL type specifier handles bounds outside the floating
2282 point ranges without signalling FLOATING-POINT-OVERFLOW.
2283 ** Functions with IR1-transformations can create intercomponent
2284 references to global functions.
2285 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2287 ** FORMAT ~R treats a nil value for its first parameter correctly.
2289 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2290 * enhancement: saving cores with foreign code loaded is now
2291 supported on x86/NetBSD and sparc/Linux in addition to the previously
2292 supported platforms.
2293 * bug fix: on some platforms repeated installations caused multiple
2294 copies of HTML documentation to be installed -- should not happen
2295 any more. (reported by Stefan Scholl)
2296 * bug fix: parsing self-recursive alien record types multiple times
2297 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2298 original patch by Helmut Eller for CMUCL)
2299 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2300 (thanks to Richard Kreuter)
2301 * bug fix: defining classes whose accessors are methods on existing
2302 generic functions in other (locked) packages no longer signals
2303 bogus package lock violations. (reported by François-René Rideau)
2304 * bug fix: special variables as DEFMETHOD parameters no longer have
2305 associated bogus type declarations. (reported by David Wragg and
2307 * bug fix: read-write consistency on streams of element-type
2308 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2309 * bug fix: redefiniton of the only method of a generic function with
2310 no DEFGENERIC no longer emits a full WARNING. In addition,
2311 redefinition of generic functions with no DEFGENERIC to an
2312 incompatible lambda list now signals an error. (thanks to Zach
2314 * bug fix: DEFGENERIC now works even when there's a function of the
2315 same name in an enclosing lexical environment. (thanks to Zach
2317 * fixed compiler failure, caused by instrumenting code during
2318 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2319 * optimization: added loop analysis and improved register allocation
2320 * fixed some bugs revealed by Paul Dietz' test suite:
2321 ** POSITION on displaced vectors with non-zero displacement
2322 returns the right answer.
2323 ** (SIMPLE-STRING) is a valid type specifier for sequence
2325 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2327 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2328 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2330 ** The justification version of the FORMAT ~< directive treats
2331 non-zero minpad parameter correctly.
2333 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2334 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2335 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2336 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2337 the supported interface.
2338 * new feature: Single-stepping of code compiled with DEBUG 2 or
2339 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2340 * new feature: saving cores with foreign code loaded is now
2341 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2342 Timothy Moore's work for CMUCL)
2343 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2344 parameters to * instead of NIL if no initform is supplied.
2345 (reported by Johan Bockgaard)
2346 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2347 correctly when FUNCALL appears as the car of the form. Note:
2348 despite this FUNCALL forms are not currently subject to
2349 compiler-macro expansion. (port of Raymond Toy's fix for the
2350 same from CMUCL, reported by Johan Bockgaard)
2351 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2352 (thanks for Teemu Kalvas)
2353 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2354 case instead of terminating the iteration (thanks for Julian
2355 Squires, Sean Champ and Raymond Toy)
2356 * bug fix: incorrect expansion of defgeneric that caused a style
2357 warning. (thanks for Zach Beane)
2358 * bug fix: slot accessor effective method computation works properly
2359 for classes with multiple non-standard applicable methods on
2360 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2361 * on x86 compiler supports stack allocation of results of LIST and
2362 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2363 CMUCL implementation by Gerd Moellmann)
2364 * fixed some bugs revealed by Paul Dietz' test suite:
2365 ** FORMAT strings with both the ~<~:;~> form of the justification
2366 directive and pretty-printing directives cause an error.
2368 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2369 * incompatible change: the internal functions
2370 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2371 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2372 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2373 instead of the old functions.
2374 * new feature: on platforms where "dladdr" is available foreign
2375 function names now appear in backtraces. (based on Helmut Eller's
2377 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2378 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2380 * documentation: ASDF manual is now distributed with SBCL.
2381 * bug fix: SBCL can now load its contributed modules with REQUIRE
2382 even if the system-provided entries have been removed from
2383 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2385 * bug fix: backtraces involving undefined functions or assembly
2386 routines are more informative. (thanks to Brian Downing)
2387 * bug fix: mutually referent alien structures now work correctly.
2388 (reported by Rick Taube)
2389 * bug fix: structures defined by WITH-ALIEN can be referred to
2390 within other definitions in the same WITH-ALIEN.
2391 * bug fix: division operators (MOD, TRUNCATE and the like) with
2392 constant zero divisors and integer dividends no longer generate
2394 * bug fix: provide default methods for INPUT-STREAM-P and
2395 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2396 * bug fix: improve the detection and resolution of MOP metacycles
2397 (where effective method computation depends on the generic function
2398 having its effective method computed). (reported by Bruno Haible)
2399 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2400 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2401 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2402 * bug fix: pathnames with relative directory components can be
2403 represented relative to default pathnames.
2404 * optimization: in taking the GCD of bignums, reduce the two bignums
2405 to approximately the same size (using Euclid's algorithm) before
2406 applying the more sophisticated binary GCD. (thanks to Juho
2408 * optimization: COUNT on bitvectors now operates word-at-a-time.
2409 * optimization: ASH with a positive, but not necessarily constant,
2410 (leftwards) shift, when in a modular context, is compiled to a
2412 * fixed some bugs revealed by Paul Dietz' test suite:
2413 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2414 if the corresponding argument is NIL.
2415 ** FORMAT directives accepting a minpad parameter treat negative
2417 ** literal commas as character parameters to FORMAT directives are
2419 ** literal spaces directly after ~<Newline> directives within a
2420 format-logical-block (~:< ~@:>) do not induce :FILL-style
2421 conditional newlines.
2422 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2423 as specified: it no longer includes conditional newlines).
2424 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2426 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2427 :PER-LINE-PREFIX argument does not evaluate to a string.
2429 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2430 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2431 the manual for details; for now, package locks can be disabled by
2432 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2433 if no major problems are found then it is likely that they will be
2434 compiled in unconditionally.
2435 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2436 unsupported operators on all platforms. To load a shared library
2437 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2438 object file, link it into a shared library outside of SBCL and
2439 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2441 * bug workaround: ROOM T and the GC were not working together
2442 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2443 reporting facility aren't preserved. That reporting has been
2444 disabled, so now until and unless someone figures out how to make it
2445 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2446 * minor incompatible change: as threatened around sbcl-0.8.0, the
2447 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2448 The symbols are also exported from SB-PCL for backwards
2449 compatibility, but more so than before SB-PCL should be treated as
2450 an implementation-internal package.
2451 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2453 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2454 It is known as of this release not to work on the Alpha, however.
2455 * fixed bug #167: errors signalled due to illegal syntax in method
2456 bodies are now more legible.
2457 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2458 designators and can hence be used with TYPEP.
2459 * fixed bug #333: CHECK-TYPE now ensures that the type error
2460 signalled, if any, has the right object to be accessed by
2461 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2462 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2463 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2465 * fixed bug #334: programmatic addition of slots using specialized
2466 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2467 and :ALLOCATION :CLASS slots.
2468 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2469 float exponents. (rereported by Peter Seibel)
2470 * fixed a bug: #\Space (and other whitespace characters) are no
2471 longer considered to be macro characters in standard syntax by
2472 GET-MACRO-CHARACTER.
2473 * fixed bug: initialization of condition class metaobjects no longer
2474 causes an instance of the condition to be created. (reported by
2476 * fixed bug: it is now possible to have slots such that
2477 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2478 description is neither :INSTANCE nor :CLASS.
2479 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2480 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2481 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2482 non-standard SLOT-DEFINITION-ALLOCATION values.
2483 * fixed bugs: various race conditions handling exiting threads.
2484 CL-PPCRE's thread torture test now passes.
2485 * fixed arguably-a-bug: GC time proportional to number of threads in
2486 system even when most of them are idle
2487 * optimization: improved performance of BIT and SBIT on bit-vectors.
2488 * .fasl file incompatibility: The fasl file version number has
2489 been incremented because of changes associated with package locks.
2491 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2492 * minor incompatible change: the system no longer provides
2493 optimization hints (conditions which are TYPEP
2494 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2495 mode; these hints are still emitted when higher SPEED optimization
2497 * new contrib module: a sampling profiler (profiling by statistical
2498 sampling, rather than by instrumenting functions) is available as
2499 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2500 * the behaviour of the standard function ED is now customizeable by
2501 third parties through a hook variable: see ED's documentation
2502 string for information on the protocol.
2503 * the compiler no longer emits efficiency notes for (FUNCALL X)
2504 when the type of X is uncertain under default optimization
2506 * fixed bug 276: mutating a binding of a specialized parameter to a
2507 method to something that is not TYPEP the specializer is now
2509 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2510 exhibit the required behaviour on the x86 platform. (thanks to
2511 Peter van Eynde, Eric Marsden and Bruno Haible)
2512 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2513 even for difficult arguments. (reported by Peter Graves)
2514 * fixed bug 141a: the backquote printer now descends quoted
2516 * fixed another bug in backquote printing: no more destructive
2517 modification of the form's list structure. (reported by Brian
2519 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2520 move between its address being taken and the call to
2521 interrupt_thread, fixing a crashing race condition.
2522 * the SB-POSIX contrib implementation has been adjusted so that it
2523 no longer exhibits ridiculously poor performance when constructing
2524 instances corresponding to C structs.
2526 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2527 * minor incompatible change: the sb-grovel contrib now treats C
2528 structures as alien (in the sense of SB-ALIEN) objects rather than
2529 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2530 has implications for memory management of client code
2531 (sb-grovel-returned objects must now be manually managed) and for
2532 type safety (alien objects now have full types).
2533 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2534 used to control emission of compiler diagnostics, rather than the
2535 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2536 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2537 quality should be considered deprecated.
2538 * install.sh now installs the user manual as well
2539 * (not quite a new documentable feature, but worth considering in
2540 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2541 beginnings of a semantically meaningful condition hierarchy is
2542 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2544 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2545 designator as the defaults argument.
2546 * fixed bug: Displaced arrays whose displaced-to array has become
2547 too small now cause ARRAY-DIMENSION to signal an error, providing
2548 for safer bounds-checking. (reported by Bruno Haible)
2549 * fixed bug: DEFCLASS slot definitions with identical :READER and
2550 :WRITER names now signal a reasonable error. (reported by Thomas
2552 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2554 * fixed bug: Invalid slot specification errors now print correctly.
2555 (thanks to Zach Beane)
2556 * fixed bug 320: Shared to local slot value transfers in class
2557 redefinitions now happen corrently from superclasses as
2558 well. (reported by Bruno Haible)
2559 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2561 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2562 improper lists correctly. (reported by Bruno Haible)
2563 * fixed bug 313: source-transform for <fun-name> was erroneously
2564 applied to a call of a value of a variable with name <fun-name>.
2565 (reported by Antonio Menezes Leitao)
2566 * fixed bug 307: The obsolete instance protocol ensures that
2567 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2568 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2569 remove dead unknown-values globs from the middle of the stack.
2570 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2571 easier to resume long computations after using *BREAK-ON-SIGNALS*
2572 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2573 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2574 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2575 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2576 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2577 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2579 * fixed a (fairly theoretical) bug in string printing: if
2580 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2581 does not have array-element-type equal to the most general string
2583 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2584 function name. (thanks to Nikodemus Siivola)
2585 * fixed bug: compile-time format string checker failed on
2586 non-closed ~{. (reported by Thomas F Burdick)
2587 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2588 don't warn on legal loop code involving more than one aggregate
2589 boolean. (thanks to Nikodemus Siivola)
2590 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2591 in keyword position to MAKE-PACKAGE was not being reported as
2593 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2594 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2596 * fixed bugs 280 and 312: the checking for multiple definitions in a
2597 file is less likely to become confused by uses of inline
2599 * fixed bug: the #S reader macro performs the keyword coercion
2600 specified for slot names. (reported by Kalle Niemitalo)
2601 * fixed bug: lambda lists may contain symbols whose names start with
2602 & but are not lambda-list-keywords; their occurrence triggers a
2604 * fixed bug 321: define-method-combination argument lambda lists do
2605 not cause invalid code to be generated when &optional or &aux
2606 variables have default values. (reported by Bruno Haible)
2607 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2608 have CLOS classes; this appears also to have fixed reported
2609 instability in stack exhaustion detection.
2610 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2611 MUFFLE-WARNING when no associated restart is present is now
2613 * optimization: rearranged the expansion of various defining macros
2614 so that each expands into only one top-level form in a
2615 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2617 * optimization: used a previously little-used slot in symbols to
2618 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2620 * fixed some bugs revealed by Paul Dietz' test suite:
2621 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2623 ** Fixed an optimization bug related to inheritance of initforms
2624 from local to shared slots.
2625 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2626 ** CAST optimizer forgot to flush argument derived type.
2627 ** print/read consistency on floats is now orders of magnitude
2628 more likely. (thanks also to Bruno Haible for a similar report
2630 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2631 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2632 for objects of type REAL. Make it so.
2633 ** SXHASH is specified (infelicitously) to respect similarity,
2634 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2635 it so. (thanks to Markus Ziegler)
2636 ** on the Alpha, the compiler succeeds in compiling functions
2637 returning a known number of arguments greater than 63.
2638 ** fixed handling of invalid NIL arguments in keyword position
2640 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2642 ** provided a readably-printable representation for RANDOM-STATE
2644 ** ensured that pathnames, where they have a namestring, always
2645 print using #P"..." syntax.
2647 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2648 * Support for the forthcoming 2.0 version of the NetBSD kernel
2649 running on x86 hardware has been added. (thanks to Perry
2650 E. Metzger most immediately, and others for their past work)
2651 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2652 current release version; SBCL's OpenBSD support had been broken
2653 since about the time of OpenBSD's switch to ELF binary format.)
2654 * [placeholder for DX summary]
2655 ** user code with &REST lists declared dynamic-extent, under high
2656 speed or space and low safety and debug optimization policy.
2657 * The manual has been converted to Texinfo format and the debugger
2658 chapter from the cmucl manual has been added.
2659 * A facility has been added to extract documentation strings from
2660 sbcl and store them as Texinfo-formatted snippets for inclusion in
2661 the manual (via Texinfo's @include directive)
2662 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2663 the test case to Dave Roberts)
2664 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2665 pointers. (reported by Sean Ross)
2666 * bug fix: PROFILE output is printed nicely even for large numerical
2667 values. (thanks to Zach Beane)
2668 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2669 greater than 32 handle EOF correctly.
2670 * bug fix: on X86 an immediate argument of the IMUL instruction is
2671 correctly printed in disassembly. (thanks to Lutz Euler)
2672 * bug fix: class slots in redefined classes preserve their old
2673 values. (thanks to Bruno Haible and Nikodemus Siivola)
2674 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2675 succeeds. (reported by Marco Baringer)
2676 * fixed some bugs revealed by Paul Dietz' test suite:
2677 ** READ-SEQUENCE now works on ECHO-STREAMs.
2678 ** RATIONALIZE works more according to its specification. (thanks
2681 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2682 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2683 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2684 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2685 should matter to you only if you rebind the printer control
2686 variables and then find you want different bindings in the
2687 debugger than in the ordinary execution of your program.)
2688 * The runtime build system has been tweaked to support building
2689 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2690 assembler and linker. (thanks to Nikodemus Siivola)
2691 * Unbound, undefined, undeclared variables now trigger full
2692 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2693 more often programmer error than deliberate exploitation of undefined
2695 * optimization: the hash algorithm for strings has changed to one
2696 that is less vulnerable to spurious collisions. (thanks to Juho
2698 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2699 needless bounds checking. (thanks to Juho Snellman)
2700 * optimization: implemented multiplication as a modular
2701 (UNSIGNED-BYTE 32) operation on the PPC backend.
2702 * fixed some bugs revealed by Paul Dietz' test suite:
2703 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2705 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2706 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2707 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2709 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2711 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2713 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2714 their output stream on EOF from read.
2715 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2716 have been read to end-of-file.
2717 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2719 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2720 description of determination of which consecutive characters
2722 ** Printing the "Space" character with escaping on now yields "#\\ ",
2723 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2724 ** Reading floating-point numbers with *READ-BASE* set to a number
2725 less than 10 works correctly.
2726 ** Reading floating-point numbers with *READ-BASE* set to a number
2727 more than 10 works correctly.
2728 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2729 the readtable currently in effect.
2731 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2732 * minor incompatible change: parsing of namestrings on a physical
2733 (Unix) host has changed; numbers after the final #\. in a
2734 namestring are no longer interpreted as a version field. This is
2735 intented to be largely invisible to the user, except that the
2736 meaning of the namestring "*.*.*" has changed: it now refers to a
2737 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2738 should usually be replaced by
2739 (make-pathname :name :wild :type :wild :version :wild)
2740 with the added benefit that this is more likely to be portable.
2741 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2742 option to OPEN now signals an error if the file being opened
2743 exists; this may have an impact on existing code.
2744 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2745 signals received, on the PowerPC platforms (both Linux and
2746 Darwin). (thanks to Pierre Mai for pointing out the location of
2748 * several fixes on OS X: The system now builds and runs cleanly on
2749 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2750 (thanks to Brian Mastenbrook)
2751 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2752 second-resolution: integer multiples of 1/3600 between -24 and 24.
2753 (thanks to Vincent Arkesteijn)
2754 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2755 type when called with 1 argument; PEEK-CHAR checked type of
2756 PEEK-TYPE only after having read first character from a
2757 stream. (reported by Peter Graves)
2758 * bug fix: the garbage collector now has much better locality
2759 behaviour, and in particular no longer treats all memory as being
2760 exhausted when many small objects point to each other in a deeply
2762 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2763 recognized as being TYPEP their class.
2764 * bug fix: the PUSHNEW documentation string has been corrected.
2765 (thanks to Vincent Arkesteijn)
2766 * bug fix: defaulting of the value for the last of an atypically
2767 large number of multiple values being bound was not being
2768 performed correctly on the Alpha or PPC platforms
2769 * optimization: implemented multiplication as a modular
2770 (UNSIGNED-BYTE 32) operation on the x86 backend.
2771 * optimization: SEARCH on simple-base-strings can now be open-coded.
2772 (see also contrib/compiler-extras.lisp for inspiration for
2773 teaching the compiler about the Boyer-Moore algorithm).
2774 * value, returned by MAX (and MIN) called with several EQUALP, but
2775 not EQL, arguments now does not depend on compiler settings.
2776 * fixed some bugs revealed by Paul Dietz' test suite:
2777 ** in stack analysis liveness information is propagated from
2778 non-local entry points.
2779 ** pathwise CAST removing failed when the CAST node did not start
2781 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2782 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2784 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2785 host is already defined.
2786 ** RENAME-FILE works on streams instead of signalling an internal
2788 ** PEEK-CHAR uses the current readtable when determining whether
2789 or not a character is whitespace.
2790 ** MERGE-PATHNAMES handles the case when the pathname does not
2791 specify a name while the default-pathname specifies a version.
2792 ** Pathnames now stand a better chance of respecting print/read
2794 ** Attempting to use standardized file system operators with a
2795 pathname with invalid :DIRECTORY components signals a
2797 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2799 ** DIRECTORY on logical pathnames is more correct.
2800 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2801 signal a TYPE-ERROR if their argument is not a stream.
2802 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2803 designator argument does not designate a stream.
2804 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2805 examining the synonym.
2806 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2808 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2809 element-type larger than ([UN]SIGNED-BYTE 32).
2811 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2812 * When built with the :SB-FUTEX feature, threaded builds now take
2813 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2814 for faster/more reliable mutex and condition variable support.
2815 * Incompatible change (but one you probably shouldn't have been using
2816 anyway): the interface and code for arbitrating between multiple
2817 threads in the same user session has been redesigned.
2818 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2819 error when called without an explicit environment argument.
2820 (thanks to Nikodemus Siivola)
2821 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2822 confused about their position. (thanks to Adam Warner and Gerd
2824 * bug fix: Pretty printing backquoted forms with unquotations in the
2825 argument list position of various code constructs such as LAMBDA
2826 now works correctly. (reported by Paul Dietz)
2827 * bug fix: Pretty printing unquotations no longer loses all
2828 stream position information.
2829 * optimization: performance of string output streams is now less
2830 poor for multiple small sequence writes.
2831 * optimization: performance of CSUBTYPEP in the presence of complex
2832 expressions involving CONS and NOT many times has been improved.
2833 (reported by Paul Dietz)
2834 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2836 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2837 streams for the REPL, for the debugger, and so on. (thanks to
2839 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2840 * fixed some bugs revealed by Paul Dietz' test suite:
2841 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2842 is ignored if it is too small, rather than propagating through
2843 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2844 ** extremely complex negations of CONS types were not being
2845 sufficiently canonicalized, leading to inconsistencies in
2847 ** VALUES tranformer lost derived type.
2849 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2850 * fixed a bootstrapping bug: the build process no longer assumes
2851 that the various BOOLE-related constants have the same value in
2852 host and target lisps. (noted by Paul Dietz' test suite on an
2853 SBCL binary built from CLISP)
2854 * The system can now be dynamically linked on the MIPS platform,
2855 which enables dynamic loading of foreign code from Lisp. (thanks
2856 to Ralf Baechle for discussions on the MIPS ABI)
2857 * The system now records debugging information for its own source
2858 files in a filesystem-position-independent manner, relative to
2859 the "SYS" logical host.
2860 * fixed a compiler bug: MV-LET convertion did not check references
2861 to the "max args" entry point. (reported by Brian Downing)
2862 * tweaked disassembly notes to be less confident about proclaiming
2863 some instruction as an LRA. (thanks to Brian Downing)
2864 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2865 now each have their own history, command character, and other
2866 characteristics. (thanks to David Lichteblau)
2867 * fixed some bugs revealed by Paul Dietz' test suite:
2868 ** compiler failure in compiling LOGAND expressions including a
2870 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2871 shift greater than 32.
2872 ** FLUSH-DEST did not mark blocks for type check regeneration.
2873 ** HANDLER-CASE failed to accept declarations in handler clauses
2874 in some circumstances.
2876 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2877 * New code in contrib/sb-introspect (still probably not entirely
2878 stable yet) provides some support for smart Lisp development
2879 environments like SLIME.
2880 * The conditions signalled for errors occurring when loading .fasl
2881 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2882 in a way which should help ASDF recover gracefully.
2883 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2884 stuff has been cleaned up. If you code contrib/ stuff, this might
2885 affect you, and you can look at contrib/README, contrib/STANDARDS,
2886 and/or the 0.8.4.27 diff to check.
2887 * In full calls the compiler now does not generate checks for declared
2888 argument types for all arguments.
2889 * various threading fixes
2890 ** and some experimental patches which didn't make it into
2891 the main tree for this release, but which are shipped in
2892 contrib/experimental-thread.patch as a possible fix for some
2893 failures (deadlock, spinning...) in GC-intensive multithreaded
2895 * fixed PPC build problem (source code incompatibility of different
2896 library versions): added offsetof() hackery which attempts to divine
2897 where glibc maintainers put uc_mcontext today
2898 * fixed bug 282: compiler does not trust type assertions while passing
2899 arguments to a full call.
2900 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2901 &OPTIONAL VALUES type parameter.
2902 * fix bug 214: algorithm for noting rejected templates is now more
2903 similar to that of template seletion. (also reported by rydis on
2905 * fixed bug 141b: printing backquoted information readably and prettily
2906 inserts a space where necessary.
2907 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2908 (CHARACTER 10) are now reported as errors, rather than propagated
2909 as unknown types. (reported by piso on #lisp)
2910 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2911 with values NIL and :ERROR. (thanks to Milan Zamazal)
2912 * fixed bug 191c: CLOS now does proper keyword argument checking as
2913 described in CLHS 7.6.5 and 7.6.5.1.
2914 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2915 longer raise an error; further, using a list as a for-as-arithmetic
2916 counter now raises a meaningful error.
2917 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2918 now understood by sequence creation functions such as MAKE-SEQUENCE
2920 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2921 a STRING-INPUT-STREAM.
2922 * compiler enhancement: SIGNUM is now better able to derive the type
2924 * type declarations inside WITH-SLOTS are checked. (reported by
2926 * fixed some bugs revealed by Paul Dietz' test suite:
2927 ** incorrect optimization of TRUNCATE for a positive first
2928 argument and negative second.
2929 ** compiler failure in let-convertion during flushing dead code.
2930 ** compiler failure while deriving type of TRUNCATE on an
2931 interval, containing 0.
2932 ** ASH of a negative bignum by a negative bignum count now returns
2934 ** intersection of CONS types now canonicalizes properly, fixing
2935 inconsistencies in SUBTYPEP.
2937 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2938 * incompatible change: The --disable-debugger command line
2939 option now clobbers the debugger at a more fundamental
2940 level, by redefining #'INVOKE-DEBUGGER instead of by
2941 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2942 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2943 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2944 enter the debugger REPL and then suffer recursive errors
2945 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2946 while under the new system, BREAK in --disable-debugger mode
2947 terminates the system just as an unhandled error would.
2948 * fixed compiler performance when processing loops with a step >1;
2949 * bug fix: DOCUMENTATION now retrieves generic function
2950 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2951 support has been systematized, and now supports the methods
2952 specified by ANSI, along with a default method and a method for
2953 slot documentation. (reported by Nathan Froyd)
2954 * bug fix: effective methods associated with a generic function are
2955 no longer cached over a change of that generic function's method
2956 combination. (reported by Andreas Fuchs)
2957 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2958 names a non-existent directory. (thanks to Andreas Fuchs)
2959 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2960 the PPC platform, lead to stack corruption; this has been fixed.
2961 (reported by Rainer Joswig)
2962 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2963 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2964 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2965 arithmetic in general, is now much more reliable on the PPC
2967 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2968 platform now returns the right answer.
2969 * optimization: restored some effective method precomputation in
2970 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2971 precomputation is now tunable.
2972 * optimization: compiler-internal data structure use has been
2973 reviewed, and changes have been made that should improve the
2974 performance of the compiler by about 20%.
2975 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2976 simple-base-strings and simple-bit-vectors is improved.
2977 * optimization: the optimization of 32-bit logical and arithmetic
2978 functions introduced in version 0.8.3 on the x86 has been
2979 implemented on the mips, ppc and sparc platforms; an
2980 implementation of the same facility, but for 64-bit arithmetic,
2981 has been added for the alpha.
2982 * microoptimization: the compiler is better able to make use of the
2983 x86 LEA instruction for multiplication by constants.
2984 * bug fix: in some situations compiler did not report usage of
2985 generic arithmetic in (SPEED 3) policy.
2986 * bug 145b fix: compiler used wrong type specifier while converting
2987 MEMBER-types to numeric.
2988 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2990 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2991 index argument now works properly on the Alpha platform.
2992 * bug fix: floating point exception treatment on the Alpha platform
2994 * bug fix: FILE-POSITION works much better on string input and
2995 output streams. (thanks to Nikodemus Siivola)
2996 * bug fix: many threading/garbage collection symptoms sorted.
2997 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2998 might be pseudo-atomic.
2999 * internal change: Stopping for GC is now done with signals not
3000 ptrace. GC is now done in whichever thread wanted it, instead of
3002 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3004 * bug fix: result form in DO is not contained in the implicit
3006 * incompatible change: ICR structure is changed; the value part of
3007 CONTINUATION is now called LVAR; corresponding functions are
3008 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3009 * added type deriver for ISQRT (thanks to Robert E. Brown).
3010 * bug fix: better support for loading from the command line when an
3011 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3013 * fixed some bugs revealed by Paul Dietz' test suite:
3014 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3015 ** ROUND and FROUND now give the right answer when given very
3016 small float arguments.
3017 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3019 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3020 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3021 ** LCM should return a non-negative integer.
3022 ** PARSE-INTEGER returned the index of a terminator instead of the
3023 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3024 ** PARSE-INTEGER returned an incorrect index being applied to a
3026 ** LCM with two arguments of 0 returns 0 rather than signalling
3028 ** unsigned addition of a 32-bit constant with the high bit set no
3029 longer causes an internal compiler error on the x86.
3030 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3031 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3032 with negative last argument.
3033 ** byte specifiers with zero size and position no longer cause
3034 an error during type derivation.
3035 ** bignum multiplication on the Alpha platform now returns the
3037 * porting: The system now builds on SuSE AMD64, although it still
3038 generates a 32-bit binary.
3039 * .fasl file incompatibility: The fasl file version number has
3040 been incremented (because of the changes to internal compiler
3041 data structures referred to above).
3043 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3044 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3045 more accurately, on the Darwin kernel running on PowerPC hardware.
3046 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3047 * Compiler code deletion notes now signal a condition of type
3048 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3049 an associated MUFFLE-WARNING restart.
3050 * The compiler now performs limited argument count validation of
3051 constant format strings in FORMAT, and where appropriate in ERROR,
3052 CERROR and WARN. (thanks to Gerd Moellmann)
3053 * New ASDF-INSTALL contrib can be used for automatic download and
3054 installation of third-party Lisp code from CCLAN or other sites
3056 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3057 which forces another thread to execute a function supplied by the
3059 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3060 now accept and act upon their :ELEMENT-TYPE keyword argument.
3061 (reported by Martin Atzmueller, Edi Weitz)
3062 * bug fix: FILE-POSITION now accepts position designators up to
3063 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3064 is the greater. (thanks to Patrik Nordebo)
3065 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3066 Kalle Olavi Niemitalo)
3067 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3068 printable. (reported by Eric Marsden)
3069 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3070 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3071 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3072 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3073 (thanks to Stig Sandoe)
3074 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3075 UNREAD-CHAR now correctly includes the unread character in the
3076 target sequence. (thanks to Gerd Moellmann)
3077 * bug fix in threaded builds: the system can now be suspended and
3078 resumed by shell job control with minimal disruption.
3079 * bug fixes in times and timezones >2038AD
3080 * better handling of "where is GNU make?" problem in build scripts
3081 (thanks to Nikodemus Siivola)
3082 * new optimization: inside a named function any reference to a
3083 function with the same name is considered to be a self-reference;
3084 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3085 optimization quality.
3086 * new optimization on x86: logical functions and + now have
3087 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3088 used when the result is truncated to 32 bits.
3089 * VALUES declaration is partially enabled.
3090 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3091 * fixed some bugs revealed by Paul Dietz' test suite:
3092 ** The system now obeys the constraint imposed by
3093 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3094 types form a lattice under type intersection.
3095 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3096 ** ASSOC now ignores NIL elements in an alist.
3097 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3098 and (1+ MOST-POSITIVE-FIXNUM) answers.
3099 ** The addition of a method with invalid qualifiers to a generic
3100 function does not cause an error to be signalled immediately;
3101 a warning is signalled, and the error is generated only on
3102 calling the generic function.
3103 * changed .fasl file version number, in part to add type codes for
3104 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3105 obscure ANSI requirements
3107 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3108 * fixed bug 148: failure to inline-expand a local function left
3109 garbage, confusing the compiler.
3110 * fixed bugs 3cd: structure slot readers perform type check if the
3111 slot can have an invalid value (i.e. it is either not initialized
3112 or can be written with a less specific slot writer).
3113 * bug fix: the compiler now traps array references to elements off
3114 the end of an array; previously, the bounds checking in some
3115 circumstances could go off-by-one.
3116 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3118 * type declarations for array element types now obey the description
3119 on the CLHS page "Declaration TYPE", as per discussions on
3120 sbcl-help around 2003-05-08. This means that a declaration
3121 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3122 declaration, all references to BAR will be asserted or assumed
3123 (with THE, so dependent on compiler policy) to involve objects of
3124 type FOO. Note that no such declaration is implied in
3125 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3126 * declared types of functions from the "Conditions"
3127 chapter. (reported by Paul Dietz)
3128 * bug fix: CERROR accepts a function as its first argument.
3129 * bug fix: NTH an NTHCDR accept a bignum as index
3130 arguments. (reported by Adam Warner)
3131 * optimization: character compare routines now optimize comparing
3132 against a constant character. (reported by Gilbert Baumann)
3133 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3134 argument now works properly on the MIPS platform.
3135 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3136 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3137 declared to have a functional type, does not cause an error
3139 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3140 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3141 * fixed bug: if last continuation of a deleted block has a
3142 destination, this destination should be deleted too. (reported by
3144 * fixed a bug in the bootstrap process: the host compiler's values
3145 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3146 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3147 test case from Patrik Nordebo)
3148 * improved the ability of the disassembler on the PPC platform to
3149 provide helpful disassembly notes.
3150 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3151 the class in more cases than previously.
3152 * bug fix: FILE-POSITION now understands :START and :END for
3153 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3154 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3155 8) data. (thanks to David Lichteblau)
3156 * bug fix: it is possible to add a method to a generic function
3157 without lambda list.
3158 * bug fix: reader failed to signal END-OF-FILE inside an
3159 object representation. (reported by Nikodemus Siivola)
3160 * fixed some bugs revealed by Paul Dietz' test suite:
3161 ** LAST and [N]BUTLAST should accept a bignum.
3162 ** condition slot accessors are methods.
3163 ** (VECTOR NIL) is a subtype of STRING.
3165 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3166 * minor incompatible change: some nonsensical specialized lambda
3167 lists (used in DEFMETHOD) which were previously ignored now signal
3169 * minor incompatible change: the system is now aware of the types of
3170 variables in the COMMON-LISP package, and will signal errors for
3171 most violations of these type constraints (where previously they
3172 were silently accepted).
3173 * minor incompatible change: COMPILE-FILE now uses the freedom
3174 afforded (ANSI 3.2.2.3) to use derived function types for
3175 functions defined in the same file. This also permits the system
3176 to warn on static type mismatches and function
3177 redefinition. (Currently it does not work with high DEBUG level.)
3178 * minor incompatible change: VALUES declaration is disabled.
3179 * When issuing notes, the compiler now signals a condition of type
3180 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3181 restart for use in user handlers. It is expected that the
3182 COMPILER-NOTE condition will eventually become a condition
3183 supertype to a hierarchy of note types, which will then be
3184 handleable in a similar fashion. However, at the moment, no such
3185 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3186 but it's an implementation detail, not a classification for the
3188 * Changes in type checking closed the following bugs:
3189 ** type checking of unused values (192b, 194d, 203);
3190 ** template selection based on unsafe type assertions (192c, 236);
3191 ** type checking in branches (194bc).
3192 * A short form of VALUES type specifier has ANSI meaning (it has
3193 increased the number of situations when SBCL cannot perform type
3195 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3196 keywords or constants is permissible.
3197 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3198 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3199 classes. (thanks to Antonio Martinez)
3200 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3201 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3202 argument to a pretty-print stream. Instead, it leaves any such
3203 operations to DESCRIBE-OBJECT methods.
3204 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3206 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3207 lambda lists. (thanks to David Lichteblau)
3208 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3209 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3210 (thanks to Gerd Moellmann)
3211 * fixed bug 246: increased compilation speed of long
3212 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3214 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3216 * DEFCONSTANT now throws a condition of type
3217 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3218 constant to a non-EQL value; CONTINUE and ABORT restarts
3219 respectively change and preserve the value.
3220 * fixed bug 63: The code walker, part of the implementation of CLOS,
3221 is now better at handling symbol macros.
3222 * bug fix: There is no longer an internal implementation type named
3223 CL:LENGTH. (reported by Raymond Toy)
3224 * bug fix: In macro-like defining macros/special operators the
3225 implicit block does not enclose the lambda list.
3226 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3227 enclosed in parentheses) are not suitable as type specifiers, and
3228 their use properly signals an error now.
3229 * bug fix: An argument count mismatch for a type specifier in code
3230 being compiled no longer causes an unhandled error at compile
3231 time, but signals a compile-time warning.
3232 * fixed simple vector readable printing
3233 * bug fix: DESCRIBE takes more care over whether the class
3234 precedence list slot of a class is bound before accessing it.
3235 (reported by Markus Krummenacker)
3236 * bug fix: FORMATTER can successfully compile pretty-printer format
3237 strings which use variants of the ~* directive inside.
3238 * bug fix: SEARCH now applies its TEST predicate to the elements of
3239 the arguments in the correct order. (thanks to Wolfhard Buss)
3240 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3241 in type inference. (thanks to Robert E. Brown)
3242 * bug fix: Reading in symbols with an explicit package name of ""
3243 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3244 * fixed some bugs revealed by Paul Dietz' test suite:
3245 ** NIL is now allowed as a structure slot name.
3246 ** Arbitrary numbers, not just REALs, are allowed in certain
3247 circumstances in LOOP for-as-arithmetic clauses.
3248 ** Multiple class redefinitions before slot access no longer
3249 causes a type error.
3250 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3251 association between the name and a class.
3252 ** Generic functions with non-standard method-combination and over
3253 five methods all of which return constants no longer return NIL
3254 after the first few invocations. (thanks to Gerd Moellmann)
3255 ** CALL-NEXT-METHOD with no arguments now passes the original
3256 values of the arguments, even in the presence of assignment.
3257 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3259 ** DISASSEMBLE works with closures and funcallable instances.
3260 ** ADD-METHOD now returns the generic function, not the new method.
3261 ** FIND-METHOD signals an error if the lengths of the specializers
3262 is incompatible with the generic function, even if the ERRORP
3264 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3265 which its argument is a member.
3266 ** DEFCLASS only redefines the class named by its class-name
3267 argument if that name is the proper name of the class;
3268 otherwise, it creates a new class.
3269 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3270 of the UNBOUND-SLOT condition to the name of the slot.
3271 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3272 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3273 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3274 SLOT-MAKUNBOUND in the specified fashion.
3276 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3277 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3278 cross-compilation host. As a consequence, we can now bootstrap our
3279 way up to SBCL starting with a bare gcc toolchain and human-readable
3280 source code (first the source to CLISP, then the source to SBCL).
3281 * A contributed module containing a partial implementation of the
3282 simple-streams interface has been included. (thanks to Rudi
3284 * A contributed module implementing the RFC1321 Message Digest
3285 Algorithm, known as MD5, has been included.
3286 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3287 no longer has any effect, as the code controlled by this feature
3288 has been deleted. (As far as we know, no-one has ever built using
3289 this feature, and its semantics were confused in any case).
3290 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3291 work on conditions (as required by the ANSI specification),
3292 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3293 expected behaviour on conditions. Users should note, however,
3294 that such behaviour is not required by the ANSI specification,
3295 and so use of this behaviour may render their code unportable.
3296 * fixed some bugs revealed by Paul Dietz' test suite:
3297 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3299 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3300 ** SXHASH on condition objects no longer returns NIL.
3301 ** :ALLOCATION :CLASS slots are better treated; their values are
3302 updated on class redefinition, and initforms inherited from
3303 superclasses are applied.
3304 ** REMOVE-METHOD returns its generic function argument even when
3305 no method was removed.
3306 ** SHARED-INITIALIZE now initializes the values of the requested
3307 slots, including those with :ALLOCATION :CLASS.
3308 ** ALLOCATE-INSTANCE now works on structure classes defined via
3309 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3311 ** SLOT-EXISTS-P now works on conditions, as well as structures
3313 ** MAKE-LOAD-FORM now has the required methods on
3314 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3315 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3316 keyword, and now implements the SLOT-NAMES argument.
3317 ** methods with &OPTIONAL arguments no longer allow too many
3318 arguments to be passed in the call without error.
3319 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3320 option is consistent with the required arguments of the generic
3321 function lambda list.
3322 * bug fix: REQUIRE accepts a string designator. (Thanks to
3324 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3325 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3326 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3327 * bug fix: The compiler now checks for duplicated variables in macro
3329 * bug fix: SETQ on globals returns the correct value.
3330 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3331 not a COMPILER-ERROR (followed by some other strange error on
3332 choosing the CONTINUE restart).
3333 * bug fix: make.sh and friends are now more consistent in the way that
3334 they look for GNU "make".
3336 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3337 * experimental native threads support (on x86 Linux >=2.4 only).
3338 This is not compiled in by default: you need to add :SB-THREAD to
3339 the target features. See the "Beyond ANSI" chapter of the manual
3341 * fix for longstanding nonANSIism: The old distinction between
3342 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3343 The return value from CL:FIND-CLASS is now a CLOS class, and
3344 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3345 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3346 * An interface to the MetaObject Protocol, as described in Kiczales,
3347 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3348 MIT Press, 1991, is available from the SB-MOP package.
3349 * incompatible change: the SB-PCL package should now be considered
3350 a private implementation detail, and no longer a semi-private MOP
3352 * minor incompatible change: due to rearrangement for threads, the
3353 control stack and binding stack are now allocated at arbitrary
3354 addresses instead of being hardcoded per-port. Users affected by
3355 this probably have to be doing advanced things with shared
3356 libraries, and will know who they are.
3357 * minor incompatible change: Previously, all --eval forms used were
3358 processed with READ before any of them were processed with EVAL.
3359 Now each --eval form is processed with both READ and EVAL before
3360 the next --eval form is processed. (Thus package operations like
3361 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3362 work as the user might reasonably expect.)
3363 * minor incompatible change: *STANDARD-INPUT* is now only an
3364 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3366 * minor incompatible change: Y-OR-N-P is now character-oriented,
3367 not line oriented. Also, YES-OR-NO-P now works without errors.
3368 (thanks to Antonio Martinez)
3369 * sb-aclrepl module improvements: an integrated inspector, added
3370 repl features, and a bug fix to :trace command.
3371 * Known functions, which cannot be open coded by the backend, are
3372 considered to be able to check types of their arguments. (fixing
3373 a bug report by Nathan J. Froyd)
3374 * fixed a bug in computing method discriminating functions: It is
3375 now possible to define methods specialized on classes which have
3376 forward-referenced superclasses. (thanks to Gerd Moellmann)
3377 * fixed evaluation order in optional entries (reported by Gilbert
3379 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3380 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3381 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3382 required-by-AMOP NAME argument, as well as CLASS and
3383 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3384 * fixed bug 20: DEFMETHOD can define methods using names that are
3385 not the proper names of classes to designate class specializers.
3386 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3387 Unix file descriptors, instead of blowing up. (thanks to Antonio
3389 * Garbage collection refactoring: user-visible change is that a
3390 call to the GC function during WITHOUT-GCING will not do garbage
3391 collection until the end of the WITHOUT-GCING. If you were doing
3392 this you were probably losing anyway.
3393 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3394 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3395 TYPEP the latter but not the former.
3396 * The compiler issues a full WARNING for calls to undefined functions
3397 with names from the CL package.
3398 * MAP-INTO for a vector destination is open coded. (reported by
3399 Brian Downing on c.l.l)
3400 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3401 documentation string.
3402 * fixed some bugs revealed by Paul Dietz' test suite:
3403 ** COPY-ALIST now signals an error if its argument is a dotted
3405 ** Condition slots are now accessed more correctly in the presence
3406 of multiple initargs for a given slot.
3407 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3408 exclude restarts of the same name associated with a different
3410 ** DEFCLASS of forward-referenced classes with another
3411 forward-referenced class in the superclasses list no longer
3413 ** Condition slots are now initialized once each, not multiple
3414 times. (thanks to Gerd Moellmann)
3415 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3417 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3418 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3419 arguments contain duplicated elements.
3420 ** RESTART-CASE understands local macros.
3421 ** RESTART-CASE associates exactly its own restarts with a condition.
3422 ** ENDP in safe mode checks its argument to be of type LIST.
3423 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3424 in question is unbound.
3425 ** Optimized MAKE-INSTANCE functions no longer cause internal
3426 assertion failures in the presence of duplicate initargs.
3427 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3428 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3429 propagated even in the ctor optimized implementation of
3431 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3433 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3434 * a better implementation of SXHASH on (simple) bit vectors,
3435 measured both in execution speed and in distribution of results
3436 over the positive fixnums, has been installed. Likewise, a better
3437 implementation of EQUAL for simple bit vectors is now available.
3438 * fixed CEILING optimization for a divisor of form 2^k.
3439 * fixed bug 240 (emitting extra style warnings "using the lexical
3440 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3441 by Antonio Martinez)
3442 * fixed SXHASH, giving different results for NIL depending on type
3443 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3444 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3445 variable. (found by Rolf Wester)
3446 * SBCL does not ignore type declarations for special
3447 variables. (reported by rif on c.l.l 2003-03-05)
3448 * some bug fixes in contrib/sb-aclrepl/
3449 * fixed some bugs revealed by Paul Dietz' test suite:
3450 ** a bug in the CONS type specifier, whereby the CAR and CDR
3451 types got intertwined, has been fixed;
3452 ** the type system is now able to reason about the interaction
3453 between INTEGER and RATIO types more completely;
3454 ** APPEND, [N]REVERSE and NRECONC check that those their
3455 arguments, which must be proper lists, are really so;
3456 ** An array specialized to be unable to hold elements has been
3457 implemented, as required -- yes, really -- by ANSI;
3458 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3459 on malformed property lists;
3461 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3462 * incompatible packaging change: in line with Unix convention,
3463 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3464 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3465 * REQUIRE and PROVIDE are now optionally capable of doing something
3466 useful. See the documentation string for REQUIRE.
3467 * infrastructure for a managed SBCL contrib system: contributed
3468 modules in this release include:
3469 ** the ASDF system definition facility;
3470 ** an interface to the BSD Sockets API;
3471 ** an ACL-like convenience interface to the repl;
3472 (thanks to Kevin Rosenberg)
3473 ** an implementation of ROTATE-BYTE, with efficient implementation
3475 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3476 gives a closer approximation to the right answer than previously.
3477 (thanks to Raymond Toy)
3478 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3479 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3480 optional environment arguments, as required by ANSI.
3481 * fixed bugs in other functions taking environment objects, allowing
3482 calls with an explicit NIL environment argument to be compiled
3484 * fixed bug 228: primary return values from
3485 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3486 COMPILE or FUNCTION.
3487 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3488 :TYPE will no longer signal errors on innocuous objects.
3489 * fixed bug 231b: SETQ is better at respecting type declarations in
3490 the lexical environment.
3491 * fixed a bug in DEFCLASS: classes named by symbols with no or
3492 unprintable packages can now be defined.
3493 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3494 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3495 * fixed compiler failure related to checking types of functions.
3496 (reported by Robert E. Brown)
3497 * the compiler is now much more consistent in its error-checking
3498 treatment of bounding index arguments to sequence functions: in
3499 (SAFETY 3) code, errors will be signalled in almost all cases if
3500 invalid sequence bounding indices are passed to functions defined
3501 by ANSI to operate on sequences.
3502 * fixed a bug in the build procedure: documentation of SBCL-specific
3503 packages is now preserved and available in the final Lisp image.
3504 * lifted FDEFINITION lookup out of loops in the implementation of
3505 many list operations. (thanks to Robert E. Brown)
3506 * fixed a bug in the reader: the #n# reader macro now works for
3507 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3508 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3509 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3510 E. Brown and Tony Martinez respectively)
3511 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3512 SLOT-BOUNDP: in particular, it is now able to optimize them much
3513 better, and is now not vulnerable to having packages renamed.
3514 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3515 always called when a slot is not present in an instance. (thanks
3517 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3518 longer signal an error on unreading a character following EOF on
3519 the previous constituent stream. (thanks to Tony Martinez)
3520 * fixed some bugs revealed by Paul Dietz' test suite:
3521 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3522 not just nonnegative fixnums;
3523 ** the logical bit-array operators such as BIT-AND now accept an
3524 explicit NIL for their "opt-arg" argument (to indicate a
3525 freshly-consed result bit-array);
3526 ** ELT now signals an error on an invalid sequence index in safe
3528 ** the type system is now cleverer about negations of numeric
3529 types, and consequently understands the BIGNUM and RATIO types
3531 ** the type system is now cleverer about the interaction between
3532 INTEGER and RATIO types: while bugs still remain, many more
3533 cases are accurately computed;
3534 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3535 if it is in the last clause;
3536 ** CONSTANTLY now correctly returns a side-effect-free function in
3538 ** DECLARE is no longer treated as a special-operator; in
3539 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3540 * incremented fasl file version number due to the change in the
3541 DEFSTRUCT-SLOT-DESCRIPTION structure.
3543 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3544 * minor incompatible change: code processed by the "interpreter" or
3545 EVAL now has a compilation optimization policy of (DEBUG 2)
3546 (changed from (DEBUG 1)) to improve debuggability of interactive
3547 development, and to allow the use of the debug RETURN command in
3549 * an experimental implementation of the RETURN command for the
3550 debugger has been included. (thanks to Frederik Kuivinen)
3551 * fixed bug 62: constraints were not propagated into a loop.
3552 * fixed bug in embedded calls of SORT (reported and investigated by
3554 * fixed some bugs revealed by Paul Dietz' test suite:
3555 ** printing and reading of arrays with some dimensions having
3556 length 0 (thanks to Gerd Moellmann);
3557 ** BOA constructor with &AUX argument without a default value does
3558 not cause a type error;
3559 ** CONSTANTP now returns true for all self-evaluating objects.
3561 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3562 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3563 accessors that are related by inheritance, as specified in the
3564 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3565 Valtteri Vuorikoski)
3566 * The compiler is now able to inline functions that were defined in
3567 a complex lexical environment (e.g. inside a MACROLET).
3568 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3570 * Support for the upcoming FreeBSD-5.0 release has been included.
3571 (thanks to Dag-Erling Smorgrav)
3572 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3573 effect when it is not in a toplevel context.
3574 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3575 stand a better chance of being correct. (thanks to Gerd
3577 * fixed bug in COERCE, which now signals an error on coercing a
3578 rational to a bounded real type which excludes the expected
3580 * The compiler is now able to derive types more accurately from the
3581 COERCE and COMPILE functions.
3582 * fixed bug 223: functional binding is considered to be constant
3583 only for symbols in the CL package.
3584 * fixed bug 231: SETQ did not check the type of a variable being set
3585 (reported by Robert E. Brown)
3586 * A new optimization for MAKE-INSTANCE has been included, fixing
3587 various bugs (including relating to :ALLOCATION :CLASS slots and
3588 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3590 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3591 ** As required by ANSI, LOOP now disallows anonymous collection
3592 clauses such as COLLECT I in conjunction with aggregate boolean
3593 clauses such as THEREIS (= I 1);
3594 ** LOOP now signals an error when any variable is reused in the
3595 same loop (including the potentially useful construct analogous
3596 to WITH A = 1 WITH A = (1+ A);
3597 ** IT is only a special loop symbol within the first clause of a
3598 conditional loop clause;
3599 ** LOOP with a typed iteration variable over a hashtable now
3600 signals a type error iff it should.
3601 * fixed some other bugs revealed by Paul Dietz' test suite:
3602 ** FILE-STREAM now names the class previously known as FD-STREAM;
3603 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3604 argument) no longer signals an error;
3605 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3606 of the slot symbol, rather than using the current package
3607 ((:CONC-NAME "") continues to intern the slot's name in the
3609 * incremented fasl file version number, because of the incompatible
3610 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3611 of the new implementation of DEFINE-COMPILER-MACRO.
3613 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3614 * Support for building SBCL for MIPS platforms running in
3615 little-endian mode has now been checked in, and basic
3616 functionality on said platforms verified.
3617 * minor incompatible change: PCL now records the pathname of a file
3618 in which methods and the like are defined, rather than its
3620 * minor incompatible change: TRUENAME now considers the truename of
3621 a file naming a directory to be the pathname with :DIRECTORY
3622 component indicating that directory.
3623 * minor incompatible change: a NAMED clause in the extended form of
3624 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3625 reason for the previous behaviour is unclear.
3626 * more systematization and improvement of CLOS and MOP conformance
3627 in PCL (thanks to Gerd Moellman and Pierre Mai):
3628 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3630 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3631 primary methods with no specializers;
3632 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3634 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3635 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3636 FORWARD-REFERENCED-CLASSes; error reporting on
3637 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3639 ** SXHASH on CLOS instances now uses a slot internal to the
3640 instance to return different numbers on distinct instances,
3641 while preserving the same return value through invocations of
3643 ** DEFMETHOD signals errors when methods with longer incongruent
3644 lambda lists are added to generic functions;
3645 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3646 CLASS, as specified in AMOP;
3647 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3648 on the order returned by the primary method for classes of
3649 class STANDARD-CLASS;
3650 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3651 * fixed some bugs shown by Paul Dietz' test suite:
3652 ** DOLIST puts its body in TAGBODY;
3653 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3655 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3656 value producing form;
3657 ** if more variables are given to PROGV than values, extra
3658 variables are bound and made to have no value;
3659 ** NSUBSTITUTE on list arguments gets the right answer with
3661 ** ELT signals an error of type TYPE-ERROR when the index argument
3662 is not a valid sequence index;
3663 ** LOOP signals (at macroexpansion time) an error of type
3664 PROGRAM-ERROR when duplicate variable names are found;
3665 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3666 ** FUNCALL of special-operators now cause an error of type
3668 ** PSETQ now works as required in the presence of side-effecting
3669 symbol-macro places;
3670 ** NCONC accepts any object as its last argument;
3671 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3673 ** loop-for-as-package does not require a package to be explicitely
3675 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3677 * fixed bug 166: compiler preserves "there is a way to go"
3678 invariant when deleting code.
3679 * fixed bug 172: macro lambda lists with required arguments after
3680 &REST arguments now cause an error to be signalled. (thanks to
3682 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3683 bug. (thanks to Matthew Danish)
3684 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3686 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3687 arguments are lexically rebound. (thanks to Gerd Moellmann and
3689 * fixed bug 194: error messages are now more informative when there
3690 is no primary method applicable in a call to a generic
3691 function. (thanks to Gerd Moellmann)
3692 * fixed bug in command line argument checking (thanks to Julian
3694 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3695 (thanks to Matthew Danish)
3696 * incremented fasl file version number, because of the
3697 SXHASH-related changes in the layout of CLOS data structures
3699 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3700 * minor incompatible change: The runtime (the Unix executable named
3701 "sbcl") is now much pickier about the .core files it will load.
3702 Essentially it now requires .core files to descend from the same
3703 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3704 as the runtime does. (The intent is to prevent the crashes which
3705 can occur, and which can even be reported as mysterious failures,
3706 when people patch the sources or change the build parameters
3707 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3708 sbcl and .core files.)
3709 * fixed bug: VALUES-LIST is no longer optimized away.
3710 * fixed bug 142: The FFI conversion of C string values to Lisp
3711 string values no longer conses excessively. (thanks to Nathan
3712 Froyd porting Raymond Toy's fix to CMU CL)
3713 * began to systematize and improve MOP conformance in PCL (thanks to
3714 Nathan Froyd, Gerd Moellman and Pierre Mai):
3715 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3717 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3718 ** FINALIZE-INHERITANCE is now called on class finalization;
3719 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3720 argument precedence order.
3721 * fixed bug 202: The compiler no longer fails on functions whose
3722 derived types contradict their declared type.
3723 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3724 so it can be non-toplevel.
3725 * The fasl file version number has changed (because of the new
3726 implementation of DEFMACRO).
3727 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3728 safe code, that any length requirement by their type-specifier
3729 argument is valid. The exceptions to this are described in bug
3731 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3732 functions now check the types of their inputs as required by ANSI.
3733 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3734 introduced symbol is DECLAREd to be SPECIAL.
3735 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3736 * fixed bug: :COUNT argument to sequence functions may be negative
3737 * fixed bug: body of DO-SYMBOLS may contain declarations
3738 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3739 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3740 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3741 symbol macro only once
3742 * fixed printing of call frame when argument list is unavailable
3743 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3744 * compiler no longer signals WARNING on unknown keyword
3747 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3748 * A beta-quality port to the mips architecture running Linux,
3749 based on the old CMUCL backend, has been made. It has been tested
3750 on a big-endian kernel, and works sufficiently well to be able to
3751 rebuild itself; it has not been tested in little-endian mode.
3752 * fixed an inconsistency between gencgc.c and purify.c which made
3753 dumping/loading .core files unreliable
3754 * fixed bug 120a: The compiler now deals correctly with IFs where
3755 the consequent is the same as the alternative, instead of
3756 misderiving the return type. (thanks to Alexey Dejneka)
3757 * fixed bug 113: Logical pathnames are now dumpable (the logical
3758 host is resolved at load-time, throwing an error if it is not
3760 * fixed bug 174: FORMAT's error message is slightly clearer when a
3761 non-printing character is used in a format directive.
3762 * fixed several bugs in compiler checking of type declarations, i.e.
3763 violations of the Python "declarations are assertions" principle
3764 (thanks to Alexey Dejneka)
3765 * fixed several bugs in PCL's error checking (thanks to Gerd
3767 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3769 * fixed bug in compilation of functions as first class values
3770 (thanks to Antonio Martinez-Shotton)
3771 * The compiler's handling TYPE-ERRORs which it can prove will
3772 inevitably happen at runtime has been cleaned up and corrected
3773 in several ways. (thanks to Alexey Dejneka)
3774 * improved argument type checking for various basic arithmetic
3775 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3776 lavished on them in the past that they can be compiled in many
3777 ways in different special cases
3778 * fixed bug 181: compiler checks validity of user supplied type
3780 * cleaned up code flushing in optimization: Function calls which
3781 should signal errors for safety purposes (e.g. which ANSI says
3782 should signal errors when their arguments are of incorrect type)
3783 are no longer optimized away.
3784 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3785 * incremented fasl file version number, because changes in the
3786 implementation of sequence functions like COERCE caused
3787 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3788 in old inline expansions) to become undefined. (Actually these
3789 changes were later undone, so we might very well be binary
3790 compatible with 0.7.7 after all, but leaving the version number
3791 incremented seemed like the simplest and most conservative
3794 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3795 * An alpha-quality port to the parisc architecture running Linux,
3796 based on the old CMUCL backend, has been made. This, even more so
3797 than the other backends, should be considered still a work in
3798 progress; known problems include that the Linux kernel in 64-bit
3799 mode does not propagate the correct sigcontext structure to
3800 userspace, and consequently SBCL on a parisc64 kernel will not
3802 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3803 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3804 suppressed.) Also now that the compiler is looking at declarations
3805 in the environment, it checks optimization declarations as well,
3806 and suppresses inlining when (> DEBUG SPEED).
3807 * More fixes have been made to treatment of floating point exception
3808 treatment and other Unix signals. In particular, floating point
3809 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3810 * The detection and handling of control stack exhaustion (infinite
3811 or very deeply nested recursion) has changed. Stack exhaustion
3812 detection is now done by write-protecting pages at the OS level
3813 and applies at all optimization settings; when found, a
3814 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3815 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3816 be caught using IGNORE-ERRORS.
3817 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3818 correctly when transforming recursive LABELS functions to LETs.
3819 (thanks to Alexey Dejneka)
3820 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3821 that are names of constants or global variables.
3822 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3823 alien routines with docstrings.
3824 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3825 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3827 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3828 (thanks to Eric Marsden)
3829 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3830 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3831 * Bug fix: The SPARC backend can now compile functions involving
3832 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3833 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3834 to a functions expecting a PATHNAME-DESIGNATOR.
3835 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3836 lambda lists. (thanks to Alexey Dejneka)
3837 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3838 functions so that EXPORTing the name of the class doesn't cause
3839 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3840 to Antonio Martinez for reporting this)
3841 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3842 constant-folded without failing an assertion. (thanks to Einar
3843 Floystad Dorum for reporting this)
3844 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3845 types are now dealt with more correctly by the compiler.
3846 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3847 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3848 behaviour analogous to RENAME-FILE. This puts its behaviour more
3849 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3851 * The fasl file version number has changed again. (because of the
3852 bug fix involving the names of PCL MAKE-INSTANCE functions)
3854 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3855 * bug fix: Floating point exceptions are treated much more
3856 consistently on the x86/Linux and PPC/Linux platforms.
3857 * Array initialization with :INITIAL-ELEMENT is now much faster for
3858 cases when the compiler cannot open code the array creation, but
3859 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3860 array accesses have also seen a speed increase.
3861 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3862 specified. (This was at the root of some bad interactions between
3863 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3865 * bug fix: Internal error arguments for undefined functions are now
3866 computed correctly on the PPC/Linux platform.
3867 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3868 Raymond Toy's patch for CMU CL)
3869 * Support for the Solaris 9 operating environment has been included
3870 (thanks to Daniel Merritt)
3871 * A very ugly but hopefully complete draft of the missing FFI chapter
3872 of the manual has been created by reformatting the corresponding
3873 CMU CL manual chapter into (currently very ugly and incoherent)
3874 DocBook and bringing it up to date for SBCL behavior. Thus, the
3875 manual is now essentially complete, at least by my extreme
3876 once-and-only-once standards, whereby it's acceptable to refer to
3877 the doc strings of SB-EXT functions as the primary documentation.
3878 * The fasl file version number has changed again, due to cleanup of
3879 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3880 is no longer a static symbol.)
3882 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3883 * SBCL now builds with OpenMCL (version 0.12) as the
3884 cross-compilation host; also, more progress has been made toward
3885 bootstrapping under CLISP.
3886 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3888 * bug 158 fixed: The compiler can now deal with integer loop
3889 increments different from 1; fixing this turned out also to fix
3891 * bug 169 fixed: no more bogus warnings about using lexical bindings
3892 despite the presence of perfectly good SPECIAL declarations (thanks
3893 to David Lichteblau)
3894 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3895 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3896 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3898 * bug 180 fixed: Method combination specifications no longer ignore
3899 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3900 * bug fix: Structure type predicate functions now check their argument
3901 count as they should.
3902 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3903 correctly. (thanks to Pierre Mai)
3904 * minor incompatible change: The --noprogrammer option is deprecated
3905 in favor of the new --disable-debugger option, which is very similar.
3906 (The major difference is that it takes effect at a slightly different
3907 time at startup, causing handling of errors in --sysinit and
3908 --userinit files will be affected differently.) The
3909 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3910 been added to allow this functionality to be controlled from ordinary
3911 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3912 maintainers, who might want to run non-interactive scripts to
3913 build SBCL cores which will later be used interactively.)
3914 * minor incompatible change: The LOAD function no longer, when given
3915 a wild pathname to load, loads all files matching that pathname.
3916 Instead, an error of type FILE-ERROR is signalled.
3918 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3919 * bug 147 fixed: The compiler preserves its block link/count
3920 invariants more correctly now so that it doesn't crash. (thanks
3922 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3924 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3925 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3926 no-value-for-this-character as NIL (as specified by ANSI).
3927 * HOST-NAMESTRING on physical pathnames now returns a string that is
3928 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3929 (thanks to Christophe Rhodes)
3930 * The Alpha port handles icache flushing more correctly. (thanks to
3932 * More progress has been made toward bootstrapping under CLISP. (thanks
3933 to Christophe Rhodes)
3934 * The fasl file format has changed again, because dynamic loading
3935 on OpenBSD (which has non-ELF object files) motivated some cleanups
3936 in the way that foreign symbols are transformed and passed around.
3937 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3938 is no longer treated as whitespace by the reader, but instead as
3939 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3940 |A
\7fB|, instead of A as it used to.
3942 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3943 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3944 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3945 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3946 this as of 0.7.1.45, but was left out of the previous news section
3947 (thanks to Dan Barlow)
3948 * SBCL now runs on the Solaris operating system on SPARC architectures
3949 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3950 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3951 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3952 * SPARC backend cleanups, allowing builds of cores optimized for V8
3953 and V9 SPARCS, and also emission of code targeted to a particular
3954 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3956 * SBCL is closer to bootstrapping under CLISP, thanks to various
3957 fixes by Christophe Rhodes.
3958 * The fasl file format has changed again, to allow the compiler's
3959 INFO database to support symbol macros.
3960 * The user manual (in doc/) is formatted into HTML more nicely.
3961 (thanks to coreythomas)
3962 * The system is smarter about SUBTYPEP relationships, especially
3963 those involving NOT types (including types such as ATOM which are
3964 represented internally using NOT types). Thus SUBTYPEP is less
3965 likely to return (VALUES NIL NIL) in general, and in particular
3966 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3968 * The fasl file format has changed again, because the internal
3969 representation of types now includes a new slot to support the new
3970 SUBTYPEP-of-NOT-types logic.
3971 * (not a change in the main branch of SBCL, but a related prototype
3972 which can hopefully be merged into the main branch of SBCL in the
3973 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3974 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3975 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3976 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3977 dispatch macro character combinations. (thanks to Alexey Dejneka)
3978 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3979 that superficially look like logical namestrings correctly.
3980 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3982 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3983 default supplied-p) for &optional and &key arguments. (thanks to
3986 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3987 * incompatible change: The compiler is now less aggressive about
3988 tail call optimization, doing it only when (> SPACE DEBUG) or
3989 (> SPEED DEBUG). (This is an incompatible change because there are
3990 programs which relied on the old CMU-CL-style behavior to optimize
3991 away their unbounded recursion which will now die of stack overflow.)
3992 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3993 for non-GENCGC systems has been increased to 20M (since that
3994 seems much closer to the likely performance optimum for modern
3995 systems than the old 4M value was)
3996 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3997 and *DEBUG-PRINT-LEVEL*
3998 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3999 of CMU CL's support for SPARC, and various endianness and other
4000 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4001 * new syntactic sugar for the Unix command line: --load foo.bar is now
4002 an alternate notation for --eval '(load "foo.bar")'.
4004 ** The system now detects stack overflow and handles it gracefully,
4005 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4006 optimization settings. (This is a good thing in general, and
4007 its introduction in this version should be particularly timely
4008 for anyone whose code fails because of suppression of tail
4010 ** The system now hunts for the C variable "environ" in a more
4011 devious way, to avoid segfaults when the C library version differs
4012 between compile time and run time. (thanks to Christophe Rhodes)
4013 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4014 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4015 ** The compiler no longer issues bogus style warnings for undefined
4016 classes in the same source file as the DEFCLASSes which defined
4017 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4019 ** fixes in CONDITION class precedence list for undefined function
4020 errors (thanks to Alexei Dejneka)
4021 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4022 correctly. (thanks to Dan Barlow)
4023 ** portability fixes aiming at bootstrapping under CLISP (thanks
4024 to Dave McDonald and Christophe Rhodes)
4025 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4026 ** fixes in type translation and and type inference (thanks to
4028 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4029 ** various fixes in the new ports (thanks to Dan Barlow)
4030 * several changes related to debugging:
4031 ** suppression of tail recursion, as noted above
4032 ** stack overflow detection, as noted above
4033 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4034 is now the default. (For some time encapsulation has been more
4035 reliable than the breakpoint-based :ENCAPSULATE NIL
4036 implementation, at least on X86 systems; and I just noticed that
4037 encapsulation also seems closer to the spirit of the ANSI
4040 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4042 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4043 up properly again. (There was a packaging bug in 0.7.0 which
4044 left their definitions in SB-SYS::LOAD-FOREIGN and
4045 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4046 vital for most things which interface to C-level interfaces,
4047 like extensions working with sockets or databases or
4048 Perl-compatible regexes or whatever, and the need to fix
4049 this bug is the main reason that 0.7.1 was released so
4051 ** DEFGENERIC is now choosier about the methods it redefines, so that
4052 reLOADing a previously-LOADed file containing DEFGENERICs does
4053 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4054 cycle now works as it should. (thanks to Alexey Dejneka)
4055 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4056 fixed by Christophe Rhodes. (He actually submitted this patch
4057 months ago, and I delayed until after 0.7.0.)
4058 ** Bug 111 (internal compiler confusion about runtime checks on
4059 FUNCTION types) was fixed by Alexey Dejneka.
4060 * Some internal cleanups (getting rid of variables which aren't
4061 needed now that the byte interpreter is gone) caused the fasl
4062 file format number to change again.
4064 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4065 * major incompatible change: The default fasl file extension, i.e. the
4066 default extension for files produced by COMPILE-FILE, has changed
4067 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4069 ** There are many changes in the implementation of the compiler.
4070 SBCL is now essentially a compiler-only implementation of ANSI
4071 Common Lisp. EVAL still "interprets" a few special cases, but
4072 almost all the interesting cases are handled by creating
4073 a LAMBDA expression, calling COMPILE on it, then calling
4074 FUNCALL on the result.
4075 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4076 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4077 Since the code is newer, there might still be some new bugs
4078 (though not as many as before Martin Atzmueller's fixes:-). But
4079 the new code is substantially simpler and clearer, and hopefully
4080 any remaining bugs will be simpler, less fundamental, and more
4081 fixable then the bugs in the old code.
4082 ** The revised compiler is still a little unsteady on its feet.
4084 *** The debugging information it produces (particularly the names
4085 of FUNCTION objects) is sometimes much less useful than what
4086 the old compiler produced.
4087 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4088 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4089 within a MACROLET) has been temporarily weakened.
4090 ** There are new compiler optimizations for various functions:
4091 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4092 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4093 *** the math functions TRUNCATE, FLOOR, and CEILING
4094 *** the function-of-all-trades COERCE
4095 Mostly these should be transparent, but there's one
4096 potentially-annoying problem (bug 117): when the compiler
4097 inline-expands a function and does type analysis on the result,
4098 it can create control paths which have type mismatches, and
4099 when it can't prove that those control paths aren't taken,
4100 it will issue WARNINGs about the type mismatches. This is
4101 a particular problem in practice for the new sequence functions.
4102 It's not clear how this should be fixed, and for now, a
4103 workaround is given in the entry for 117 in the BUGS file.
4104 ** (Because of the interaction between the two previous items --
4105 occasional inlining problems and new inline expansions -- some
4106 of the new sequence function optimizations won't really kick in
4107 completely until debugging information, and then inlining, are
4108 straightened out in some future version.)
4109 * minor incompatible changes:
4110 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4111 DIRECTORY no longer implicitly promotes NIL slots of its
4112 pathname argument to :WILD. In particular, when you ask for the
4113 contents of a directory (which you used to be able to do without
4114 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4115 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4116 ** changes in behavior that ANSI explicitly defines to be
4117 implementation dependent:
4118 *** The new compiler-only implementation still conforms with ANSI,
4119 but acts a little different than before. Besides the obvious
4120 changes in performance tradeoffs (that the cost per form passed
4121 to EVAL has gone up, and the cost per form executed by EVAL
4122 has gone down), the behavior of the system changes a little
4123 because there are no longer any interpreted function objects.
4124 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4125 e.g. doing COMPILE on the output of interactive DEFUN is
4127 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4129 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4130 has changed from (:CL) to NIL.
4131 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4132 e.g. #\Newline and #\Tab, don't have names specified in the
4133 ANSI Common Lisp standard, is now based on their ASCII symbolic
4134 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4135 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4136 are no longer used for output.
4137 ** changes in internal implementation constants:
4138 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4139 4 million. (If your application spends a lot of time GCing and
4140 you have a lot of RAM, you might want to experiment with
4141 increasing it even more.)
4142 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4143 However, almost all old code should still continue to work without
4144 immediate update, as SB-C-CALL is now a (deprecated) nickname
4146 ** Old operator names in the style DEF-FOO are now deprecated in
4147 favor of new corresponding names DEFINE-FOO, for consistency with
4148 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4149 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4150 internal symbols, but a few supported extensions like
4151 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4152 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4153 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4154 etc. as you get deeper into recursive calls to the debugger
4155 command loop, instead of the old "5]", "5]]", "5]]]"
4156 sequence. (I was motivated to do this when squabbles between
4157 ILISP and SBCL left me very deeply nested in the debugger. In the
4158 short term, this change will probably provoke more ILISP/SBCL
4159 squabbles, but hopefully it will be an improvement in the long run.)
4160 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4161 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4162 function, since declaiming return types involving aliens is
4163 (1) annoyingly messy to do by hand and (2) vital to efficient
4164 compilation of code which calls such functions.
4165 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4166 longer reexported by the SB-EXT package. They're solely useful
4167 for alien code, so it seems more logical that you should get
4168 them from the SB-ALIEN package, not in SB-EXT.
4169 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4170 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4171 features. Instead, the code that they used to control is always
4172 built into the system.
4173 * many other bug fixes
4174 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4175 advantage of the new EVAL-WHEN stuff and to clean them up in
4176 general, and they are now more ANSI-compliant in a number of
4177 ways. Martin Atzmueller is responsible for a lot of this.
4178 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4180 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4181 *** correct ERROR type for various file operations
4182 *** some fixes for Lisp streams
4183 *** DEFMETHOD syntax checking
4184 *** changing old weird representation of debug information as
4185 strings (which, among their other deficiencies, don't transform
4186 correctly when you rename packages, and don't change their
4187 print representation when you change things like *PACKAGE*
4188 and *PRINT-LENGTH*) to symbols and lists of symbols
4189 He also made several improvements and fixed several bugs in DESCRIBE.
4190 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4192 *** misbehavior of WRITE-STRING/WRITE-LINE
4193 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4194 and several other LOOP problems as well
4195 *** DIRECTORY when similar filenames are present
4196 *** DEFGENERIC with :METHOD options
4197 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4198 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4199 *** argument ordering in FIND with :TEST option
4200 *** mishandled package designator argument in APROPOS-LIST
4201 *** various problems in the backquote readmacro
4202 *** a bug in APROPOS
4203 *** probably some others that I'm not describing very well here,
4204 since the CVS log documents them by reference to sbcl-devel
4205 messages, and the SourceForge archives aren't working well.:-(
4206 ** Dan Barlow improved the Alpha port (and is making progress on the
4207 PPC port, for those of you who think different).
4208 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4209 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4210 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4211 continues to work on the SPARC port (for those of you in a position
4212 to look down upon our little PC-compatible boxes from a great height).
4213 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4214 and uses that copy, rather than the current dynamic value, when
4215 it's trying to decide whether to truncate output. Thus e.g.
4216 (let ((*print-lines* 50))
4217 (pprint-logical-block (stream nil)
4219 (let ((*print-lines* 8))
4220 (print (aref possiblybigthings i) stream)))))
4221 should now truncate the logical block only at 50 lines, instead of
4222 often truncating it at 8 lines, as it did before.
4223 * The doc/cmucl/ directory, containing old CMU CL documentation
4224 from the time of the fork, is no longer part of the base system.
4225 SourceForge has shut down its anonymous FTP service, and with it
4226 my original plan for distributing the old CMU CL documentation
4227 there. For now, if you need these files you can download an old
4228 SBCL source release and extract them from it.
4229 * The fasl file version number changed again, for dozens of reasons,
4230 some of which are apparent above.
4232 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4233 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4234 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4235 patch, so that DISASSEMBLE output is much nicer.
4236 * The code in the SB-PROFILE package now seems reasonably stable.
4237 I still haven't decided what the final interface should look like
4238 (I'd like PROFILE to interact cleanly with TRACE, since both
4239 facilities use function encapsulation) but if you have a need
4240 for profiling now, you can probably use it successfully with
4241 the current CMU-CL-style interface.
4242 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4243 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4244 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4245 link now returns the dangling link itself, and for similar
4246 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4247 link itself. (In these cases the old code signalled an error and
4248 looped endlessly, respectively.) Thus, DIRECTORY now works even
4249 in the presence of dangling and cyclic symbolic links.
4250 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4251 is now a supported extension again, since the consensus on
4252 sbcl-devel was that it can be useful for ordinary development
4253 work, not just for debugging SBCL itself.
4254 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4255 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4256 that currently-defined functions might be redefined later with
4257 different return types.
4258 * Hash tables can be printed readably, as inspired by CMU CL code
4259 of Eric Marsden and SBCL code of Martin Atzmueller.
4260 * better error handling in CLOS method combination, thanks to
4261 Martin Atzmueller porting Pierre Mai's CMU CL patches
4262 * more overflow fixes for >16Mbyte I/O buffers
4263 * A bug in READ has been fixed, so that now a single Ctrl-D
4264 character suffices to cause end-of-file on character streams.
4265 In particular, now you only need one Ctrl-D at the command
4266 line (not two) to exit SBCL.
4267 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4269 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4270 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4271 does the right thing.
4272 * The implementation of some type tests, especially for CONDITION
4273 types, is now tidier and maybe faster, due to CMU CL code
4274 originally by Douglas Crosher, ported by Martin Atzmueller.
4275 * Some math functions have been fixed, and there are new
4276 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4277 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4278 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4279 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4280 likely to be built into sbcl-0.7.0.)
4281 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4282 CL, ported to SBCL by Martin Atzmueller)
4283 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4284 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4285 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4286 * There's a new slam.sh hack to shorten the edit/compile/debug
4287 cycle for low-level changes to SBCL itself, and a new
4288 :SB-AFTER-XC-CORE target feature to control the generation of
4289 the after-xc.core file needed by slam.sh.
4290 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4291 COMPILE-FILE is no longer supported, so that now every function
4292 gets an entry point, so that block compilation looks a little
4293 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4294 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4295 returns the number of bytes consed since the system started,
4296 rather than the number consed since the first time the function
4297 was called. (The new definition parallels ANSI functions like
4298 CL:GET-INTERNAL-RUN-TIME.)
4299 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4300 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4301 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4302 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4303 * Fasl file version numbers are now independent of the target CPU,
4304 since historically most system changes which required version
4305 number changes have affected all CPUs equally. Similarly,
4306 the byte fasl file version is now equal to the ordinary
4309 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4310 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4311 is no longer recognized. I apologize for this, because it was
4312 listed in SB-EXT as a supported extension, but I found that
4313 its existing behavior was poorly specified, as well as incorrectly
4314 specified, and it looked like too much of a mess to straighten it
4315 out. I have enough on my hands trying to get ANSI stuff to work..
4316 * many patches ported from CMU CL by Martin Atzmueller, with
4317 half a dozen bug fixes in pretty-printing and the debugger, and
4318 half a dozen others elsewhere
4319 * fixed bug 13: Floating point infinities are now supported again.
4320 They might still be a little bit flaky, but thanks to bug reports
4321 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4322 as flaky as they were.
4323 * The --noprogrammer command line option is now supported. (Its
4324 behavior is slightly different in detail from what the old man
4325 page claimed it would do, but it's still appropriate under the
4326 same circumstances that the man page talks about.)
4327 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4328 are now supported, and enabled by default. Thus, the compiler can
4329 handle many floating point and complex operations much less
4330 inefficiently. (Thus e.g. you can implement a complex FFT
4332 * The compiler now detects type mismatches between DECLAIM FTYPE
4333 and DEFUN better, and implements CHECK-TYPE more correctly, and
4334 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4335 thanks to patches from Martin Atzmueller.
4336 * various fixes to make the cross-compiler more portable to
4337 ANSI-conforming-but-different cross-compilation hosts (notably
4338 Lispworks for Windows, following bug reports from Arthur Lemmens)
4339 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4340 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4341 fixed thanks to Pierre Mai's CMU CL patches.
4342 * fixes to keep the system from overflowing internal counters when
4343 it tries to use i/o buffers larger than 16M bytes
4344 * fixed bug 45a: Various internal functions required to support
4345 complex special functions have been merged from CMU CL sources.
4346 (When I was first setting up SBCL, I misunderstood a compile-time
4347 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4348 * improved support for type intersection and union, fixing bug 12
4349 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4350 more obscure bugs as well
4351 * some steps toward byte-compiling non-performance-critical
4352 parts of the system, courtesy of patches from Martin Atzmueller
4353 * Christophe Rhodes has made some debian packages of sbcl at
4354 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4355 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4356 stable, but are nonetheless usable. When he's ready, I'd be happy
4357 to add them to the SourceForge "File Releases" section. (And if
4358 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4359 * new fasl file format version number (because of changes in
4360 internal representation of (OR ..) types to accommodate the new
4361 support for (AND ..) types, among other things)
4363 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4364 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4366 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4368 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4369 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4370 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4371 * DESCRIBE now works on structure objects again.
4372 * Most function call argument type mismatches are now handled as
4373 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4374 know whether the function will be redefined before the call is
4375 executed. (The compiler could flag local calls with full WARNINGs,
4376 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4377 it doesn't keep track of enough information to know whether calls
4378 are local in this sense.)
4379 * Compiler output is now more verbose, with messages truncated
4380 later than before. (There should be some supported way for users
4381 to override the default verbosity, but I haven't decided how to
4382 provide it yet, so this behavior is still controlled by the internal
4383 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4384 src/compiler/ir1util.lisp.)
4385 * Fasl file format version numbers have increased again, because
4386 support for the Gray streams extension changes the layout of the
4387 system's STREAM objects.
4388 * The Gray subclassable streams extension now works, thanks to a
4389 patch from Martin Atzmueller.
4390 * The full LOAD-FOREIGN extension (not just the primitive
4391 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4392 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4393 but like most other programs, it defaults to copying the Unix
4394 environment from the original process instead of starting the
4395 new process in an empty environment.
4396 * Extensions which manipulate the Unix environment now support
4397 an :ENVIRONMENT keyword option which doesn't smash case or
4398 do other bad things. The CMU-CL-style :ENV option is retained
4399 for porting convenience.
4400 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4401 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4403 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4405 * A patch from Martin Atzmueller seems to have solved the SIGINT
4406 problem, and as far as we know, signal-handling now works cleanly.
4407 (If you find any new bugs, please report them!)
4408 * The system no longer defaults Lisp source file names to types
4409 ".l", ".cl", or ".lsp", but only to ".lisp".
4410 * The compiler no longer uses special default file extensions for
4411 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4412 seems to expect a single default extension for all compiled code,
4413 and there's no compelling reason to try to stretch the standard
4414 to allow two different extensions.) Instead, byte-compiled files
4415 default to the same extension as native-compiled files.
4416 * Fasl file format version numbers have increased again, because
4417 a rearrangement of internal implementation packages made some
4418 dumped symbols in old fasl files unreadable in new cores.
4419 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4420 many fewer weird special cases.
4421 * Bug #17 (differing COMPILE-FILE behavior between logical and
4422 physical pathnames) has been fixed, and some related misbehavior too,
4423 thanks to a patch from Martin Atzmueller.
4424 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4425 by Tim Moore, ported to SBCL by Martin Atzmueller.
4426 * Martin Atzmueller fixed several filesystem-related problems,
4427 including bug #36, in part by porting CMU CL patches, which were
4428 written in part by Paul Werkowski.
4429 * More compiler warnings in src/runtime/ are gone, thanks to
4430 more patches from Martin Atzmueller.
4431 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4434 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4436 * DESCRIBE now works on CONDITION objects.
4437 * The debugger now handles errors which arise when trying to print
4438 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4440 * The build system now uses an additional file, customize-target-features.lisp,
4441 to allow local modifications to the target *FEATURES* list. (The point of
4442 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4443 debugging features enabled, without having to worry about propagating it
4444 into everyone's system when I do a "cvs update".) When no
4445 customize-target-features.lisp file exists, the target *FEATURES* list
4446 should be constructed the same way as before.
4447 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4448 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4449 warn about behavior which is undefined under the ANSI spec. Note: This
4450 is specified by ANSI, but it's not very popular with programmers.
4451 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4452 macro in the SBCL sources for an example of a workaround which you
4453 might use to make portable ANSI-standard code which does what you want.
4454 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4455 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4456 when it's used as a non-toplevel form. (This is required in order
4457 to implement the DEFCONSTANT-EQX macro.)
4458 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4459 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4460 funny things, due to bugs in the implementation of EVAL-WHEN
4461 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4462 non-toplevel DEFCONSTANTs are uncommon.)
4463 * The core file version number and fasl file version number have been
4464 incremented, because the old noncompliant DEFCONSTANT behavior involved
4465 calling functions which no longer exist, and because I also took the
4466 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4467 * fixed bug 1 (error handling before read-eval-print loop starts), and
4468 redid debugger restarts and related debugger commands somewhat while
4470 ** The QUIT debugger command is gone, since it did something
4471 rather different than the SB-EXT:QUIT command, and since it never
4472 worked properly outside the main toplevel read/eval/print loop.
4473 Invoking the new TOPLEVEL restart provides the same functionality.
4474 ** The GO debugger command is also gone, since you can just invoke
4475 the CONTINUE restart directly instead.
4476 ** The TOP debugger command is also gone, since it's redundant with the
4477 FRAME 0 command, and since it interfered with abbreviations for the
4479 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4481 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4482 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4483 some porting work by Martin Atzmueller)
4484 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4485 with a boatload of patches which he ported to SBCL. Now that those
4487 ** The system tries to make sure that its low-priority messages
4488 are prefixed by semicolons, to help people who like to use
4489 syntax highlighting in their ILISP buffer. (This patch
4490 was originally due to Raymond Toy.)
4491 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4492 patches originally written by Raymond Toy.
4493 ** The compiler understands coercion between single-value and
4494 multiple-VALUES type expressions better, getting rid of some very
4495 weird behavior, thanks to patches originally by Robert MacLachlan
4496 and Douglas Crosher.
4497 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4498 lambda lists, thanks to a patch originally by Pierre Mai.
4499 ** The system no longer bogusly warns about "abbreviated type
4501 ** The compiler gets less confused by inlining and RETURN-FROM,
4502 thanks to some patches originally by Tim Moore.
4503 ** The system no longer hangs when dumping circular lists to fasl
4504 files, thanks to a patch originally from Douglas Crosher.
4505 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4506 undefined function error.
4507 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4508 in structure slot initforms) for now, documented workaround instead:-|
4509 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4510 * fixed bug 5: added stubs for various Gray stream functions called
4511 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4512 installed, at least appropriate type errors are generated
4513 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4514 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4515 consistently in DEFMETHOD forms.
4516 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4517 it doesn't seem to affect SBCL after all
4518 * The C runtime system now builds with better optimization and many
4519 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4521 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4523 * The system is now under CVS at SourceForge (instead of the
4524 CVS repository on my home machine).
4525 * The new signal handling code has been tweaked to treat register
4526 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4527 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4528 downstream, e.g. in debug-int.lisp, has implicit dependencies
4529 on the unsignedness of integer representation of machine words,
4530 and that caused the system to bomb out with infinite regress
4531 when trying to recover from type errors involving signed values,
4532 e.g. (BUTLAST '(1 2 3) -1).)
4533 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4534 (This was one of the bugs Peter Van Eynde reported back in July.)
4535 * The system now uses code inspired by Colin Walters' O(N)
4536 implementation of MAP (from the cmucl-imp@cons.org mailing
4537 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4538 inline the MAP operation, and there is more than one
4539 sequence argument to the MAP call (so that it can't just
4540 do ETYPECASE once and for all based on the type of the
4541 single sequence argument). (The old non-inline implementation
4542 of the general M-argument sequence-of-length-N case required
4543 O(M*N*N) time when any of the sequence arguments were LISTs.)
4544 * The QUIT :UNIX-CODE keyword argument has been renamed to
4545 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4546 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4548 * Raymond Wiker's patches to port dynamic loading from Linux to
4549 FreeBSD have been added.
4550 * The BUGS file is now more nearly up to date, thanks in large part
4551 to Martin Atzmueller's review of it.
4552 * The debugger now flushes standard output streams before it begins
4553 its output ("debugger invoked" and so forth).
4554 * The core version number and fasl file version number have both
4555 been incremented, because of incompatible changes in the layout
4557 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4558 used to not be called for a saved Lisp image.)
4559 * Martin Atzmueller's version of a patch to fix a compiler crash,
4560 as posted on sbcl-devel 13 September 2000, has been installed.
4561 * Instead of installing Martin Atzmueller's patch for the
4562 compiler transform for SUBSEQ, I deleted the compiler transform,
4563 and transforms for some similar consing operations.
4564 * A bug in signal handling which kept TRACE from working on OpenBSD
4566 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4567 away by constant folding
4568 * The system now defines its address space constants in one place
4569 (in the Lisp sources), and propagates them automatically elsewhere
4570 (through GENESIS and the sbcl.h file). Therefore, patching the
4571 address map is less unnecessarily tedious and error-prone. The
4572 Lisp names of address space constants have also been systematized.
4573 * CVS tags like dollar-Header-dollar have been removed from
4574 the sources, because they have never saved me trouble and
4575 they've been source of trouble working with patches and other
4576 diff-related operations.
4577 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4578 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4580 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4582 * The system has been ported to OpenBSD.
4583 * The system now compiles with a simple "sh make.sh" on the systems
4584 that it's supported on. I.e., now you no longer need to tweak
4585 text in the target-features.lisp-expr and symlinks in src/runtime/
4586 by hand, the make.sh takes care of it for you.
4587 * The system is no longer so grossly inefficient when compiling code
4588 involving vectors implemented as general (not simple) vectors (VECTOR T),
4589 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4590 which dares to use the various sequence functions on non-simple
4591 vectors, takes less of a performance hit.
4592 * There is now a primitive type predicate VECTOR-T-P
4593 to test for the (VECTOR T) type, so that e.g.
4594 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4595 can now be compiled with some semblance of efficiency. (The old code
4596 turned the type declaration into a full call to %TYPEP at runtime!)
4597 * AREF on (VECTOR T) is still not fast, since it's still compiled
4598 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4599 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4600 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4601 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4602 without making full calls to SUBTYPEP at runtime.
4603 (Some analogous efficiency issues for non-simple vectors specialized to
4604 element types other than T, or for non-simple multidimensional arrays,
4605 have not been addressed. They could almost certainly be handled the
4606 same way if anyone is motivated to do so.)
4607 * The changes in array handling break binary compatibility, so
4608 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4609 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4610 instead of (VALUES T T).
4611 * By following the instructions that Dan Barlow posted to sbcl-devel
4612 on 2 July 2000, I was able to enable primitive dynamic object
4613 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4614 functionality is not implemented (since it calls ld to resolve
4615 library references automatically, requiring RUN-PROGRAM for its
4616 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4617 try to resolve library references) is now supported.
4618 * The system now flushes the standard output streams when it terminates,
4619 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4620 them at several other probably-convenient times, e.g. in each pass of
4621 the toplevel read-eval-print loop, and after evaluating a form given
4622 as an "--eval" command-line option. (These changes were motivated by a
4623 discussion of stream flushing issues on cmucl-imp in August 2000.)
4624 * The source transform for TYPEP of array types no longer assumes
4625 that an array whose element type is a not-yet-defined type
4626 is implemented as an array of T, but instead punts, so that the
4627 type will be interpreted at runtime.
4628 * There is now some support for cross-compiling in make.sh: each of
4629 the phases of make.sh has its own script. (This should be transparent
4630 to people doing ordinary, non-cross-compile builds.)
4631 * Since my laptop doesn't have hundreds of megabytes of memory like
4632 my desktop machine, I became more motivated to do some items on
4633 my to-do list in order to reduce the size of the system a little:
4634 ** Arrange for various needed-only-at-cold-init things to be
4635 uninterned after cold init. To support this, those things have
4636 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4637 symbols with such names are now uninterned after cold init).
4638 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4639 fasl files for cold load.
4640 ** Remove the old compiler structure pooling code (which used to
4641 be conditional on the target feature :SB-ALLOC) completely.
4642 ** Redo the representation of some data in cold init to be more compact.
4643 (I also looked into supporting byte compiled code at bootstrap time,
4644 which would probably reduce the size of the system a lot, but that
4645 looked too complicated, so I punted for now.)
4646 * The maximum signal nesting depth in the src/runtime/ support code has
4647 been reduced from 4096 to 256. (I don't know any reason for the very
4648 large old value. If the new smaller value turns out to break something,
4649 I'll probably just bump it back up.)
4650 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4652 * Many, many bugs reported by Peter Van Eynde have been added to
4653 the BUGS list; some have even been fixed.
4654 * While enabling dynamic object file loading, I tried to make the
4655 code easier to understand, renaming various functions and variables
4656 with less ambiguous names, and changing some function calling
4657 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4658 * While trying to figure out how to do the OpenBSD port, I tried to
4659 clean up some of the code in src/runtime/. In particular, I dropped
4660 support for non-POSIX signal handling, added various comments,
4661 tweaked the code to reduce the number of compilation warnings, and
4662 renamed some files to increase consistency.
4663 * To support the new automatic configuration functionality in make.sh,
4664 the source file target-features.lisp-expr has been replaced with the
4665 source file base-target-features.lisp-expr and the machine-generated
4666 file local-target-features.lisp-expr.
4667 * fixed a stupid quoting error in make.sh so that using CMU CL
4668 "lisp -batch" as cross-compilation host works again
4670 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4672 * DESCRIBE no longer tries to call itself recursively to describe
4673 bound/fbound values, so that it no longer fails on symbols which are
4674 bound to themselves (like keywords, T, and NIL).
4675 * DESCRIBE now works on generic functions.
4676 * The printer now prints less-screwed-up representations of closures
4677 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4678 * A private symbol is used instead of the :EMPTY keyword previously
4679 used to mark empty slots in hash tables. Thus
4680 (DEFVAR *HT* (MAKE-HASH-TABLE))
4681 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4682 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4683 now does what ANSI says that it should. (You can still get
4684 similar noncompliant behavior if bang on the hash table
4685 implementation with all the symbols you get back from
4686 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4687 This breaks binary compatibility, since tests for equality to
4688 :EMPTY are wired into things like the macroexpansion of
4689 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4691 * There's now a minimal placeholder implementation for CL:STEP,
4692 as required by ANSI.
4693 * An obscure bug in the interaction of the normal compiler, the byte
4694 compiler, inlining, and structure predicates has been patched
4695 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4696 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4698 * Missing ordinary arguments in a macro call are now detected even
4699 when the macro lambda list contains &KEY or &REST.
4700 * The debugger no longer complains about encountering the top of the
4701 stack when you type "FRAME 0" to explicitly instruct it to go to
4702 the top of the stack. And it now prints the frame you request even
4703 if it's the current frame (instead of saying "You are here.").
4704 * As specified by ANSI, the system now always prints keywords
4705 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4707 * The default initial SIZE of HASH-TABLEs is now smaller.
4708 * Type information from CLOS class dispatch is now propagated
4709 into DEFMETHOD bodies, so that e.g.
4710 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4712 is now basically equivalent to
4713 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4714 (DECLARE (TYPE SINGLE-FLOAT X))
4716 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4717 operation, without having to do run-time type dispatch.
4718 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4719 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4720 * Since I don't seem to be making big file reorganizations very often
4721 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4722 is overflowing my ability to conveniently back them up), I've finally
4723 checked the system into CVS. (The CVS repository is on my home system,
4724 not at SourceForge -- putting it on SourceForge might come later.)
4725 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4726 high-level GC-NOTIFY-FOO functions send their output. (There's
4727 still very little control of where low-level verbose GC functions
4728 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4729 less than it used to -- the GC-NOTIFY-FOO functions are now under
4730 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4731 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4732 in only one place in the source code, and propagates it automatically
4733 everywhere that it's needed. Thus e.g. when I bump the version from
4734 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4735 * The C source files now include boilerplate legalese and documentation
4736 at the head of each file (just as the Lisp source files already did).
4737 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4738 to his page will be replaced with a link to his new CLiki service.
4740 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4742 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4743 * The build process now looks for GNU make under the default name "gmake",
4744 instead of "make" as it used to. If GNU make is not available as "gmake"
4745 on your system, you can change this default behavior by setting the
4746 GNUMAKE environment variable.
4747 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4748 can build without error under CMU CL.
4750 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4752 * There is now a partial SBCL user manual (with some new text and some
4753 text cribbed from the CMU CL manual).
4754 * The beginnings of a profiler have been added (starting with the
4755 CMU CL profiler and simplifying and cleaning up). Eventually the
4756 main interface should be through the TRACE macro, but for now,
4757 it's still accessed through vaguely CMU-CL-style functions and macros
4758 exported from the package SB-PROFILE.
4759 * Some problems left over from porting CMU CL to the new
4760 cross-compilation bootstrap process have been cleaned up:
4761 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4762 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4763 part when getting rid of the compiler *BACKEND* stuff.)
4764 ** The value of *NULL-TYPE* was screwed up, because it was
4765 being initialized before the type system knew the final
4766 definition of the 'NULL type. This screwed up several key
4767 optimizations in the compiler, causing inefficiency in all sorts
4768 of places. (I found it because I wanted to understand why
4769 GET-INTERNAL-RUN-TIME was consing.)
4770 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4771 PROCLAIM FTYPE information. Unfortunately this broke binary
4772 compatibility again, since now the forms output by DEFGENERIC
4773 to refer to functions which didn't exist in 0.6.3.
4774 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4775 can use the new (as of 0.6.3) transform for SOME into MAP into
4777 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4778 values to (INTEGER 0 1000000), so that the time code will no longer
4779 occasionally get blown up by Linux returning 1000000 microseconds
4780 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4781 its output conform to the ANSI spec. (Alas, this makes its output
4782 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4783 * A full call to MAP NIL with a single sequence argument no longer conses.
4784 * fixes to problems pointed out by Martin Atzmueller:
4785 * The manual page no longer talks about multiprocessing as though
4786 it were currently supported.
4787 * The ILISP support patches have been removed from the distribution,
4788 because as of version 5.10.1, ILISP now supports SBCL without us
4789 having to maintain patches.
4790 * added a modified version of Raymond Toy's recent CMU CL patch for
4791 EQUALP comparison of HASH-TABLE
4793 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4795 * The system still can't cross-compile itself with
4796 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4797 entails), but at least it can compile more of itself that way
4798 than it used to be able to, and various buglets which were uncovered
4799 by trying to cross-compile itself that way have now been fixed.
4800 * This release breaks binary compatibility again. This time
4801 at least I've incremented the FASL file format version to 2, so that the
4802 problem can be detected reliably instead of just causing weird errors.
4803 * various new style warnings:
4804 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4805 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4806 ** using the lexical binding of a variable named in the *FOO* style
4807 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4808 as specified by ANSI.
4809 * *RANDOM-STATE* is no longer automatically initialized from
4810 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4811 default behavior of the system is to repeat its behavior every time
4812 it's run. If you'd like to change this behavior, you can always
4813 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4814 old convention there was no comparably easy way to get the system to
4815 repeat its behavior every time it was run.
4816 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4817 FTYPE declarations has been removed, in favor of their ANSI
4818 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4819 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4820 the types of their sequence arguments can be determined at compile time.
4821 This is done through a new open code expansion for MAP which eliminates
4822 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4823 argument types can be determined at compile time.
4824 * The optimizer now transforms COERCE into an identity operation when it
4825 can prove that the coerced object is already of the correct type. (This
4826 can be a win for machine generated code, including the output of other
4827 optimization transforms, such as the MAP transform above.)
4828 * Credit information has been moved from source file headers into CREDITS.
4829 * Source file headers have been made more standard.
4830 * The CASE macro now compiles without complaining even when it has
4833 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4835 * (Note that the way that the PCL macroexpansions were rewritten
4836 to accommodate the change in DEFGENERIC below breaks binary
4837 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4838 not run under sbcl-0.6.2. Once we get out of alpha releases,
4839 i.e. hit release 1.0.0, we'll probably try to maintain binary
4840 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4841 and sbcl-1.4.4. Until then, however, it might be fairly common
4842 for maintenance releases to break binary compatibility.)
4843 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4845 * The reporting of unhandled signals has been changed to print some
4846 explanatory text as well as the report form. (Previously only
4847 the report form was printed.)
4848 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4849 it defines, so that the compiler no longer issues undefined function
4850 warnings for compiled-but-not-yet-loaded generic functions.
4851 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4852 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4853 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4854 section of the ANSI spec are supported.
4855 * The "" nickname for the "KEYWORD" package has been removed.
4856 The reader still handles symbol tokens which begin with a package marker
4857 as keywords, but it doesn't expose its mechanism for doing so in the
4858 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4859 * The system now issues STYLE-WARNINGs for contradictory TYPE
4860 proclamations. (Warnings for contradictory FTYPE proclamations would
4861 be nice too, but those can't be done usefully unless the type system
4862 is made smarter about FUNCTION types.)
4863 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4864 systematized, so that "*target-*.lisp is supposed to exist only on the
4865 target and imply that there's a related file which exists on the
4866 host, and *host-*.lisp is supposed to exist only on the host and imply
4867 that there's a related file which exists on the target. This involves a
4868 lot of renaming. Hopefully the acute confusion caused by the renaming
4869 will be justified by the reduction in chronic confusion..
4870 ** runtime-type.lisp -> early-target-type.lisp
4871 ** target-type.lisp -> late-target-type.lisp
4872 ** early-host-format.lisp -> early-format.lisp
4873 ** late-host-format.lisp -> late-format.lisp
4874 ** host-error.lisp -> misc-error.lisp
4875 ** early-error.lisp -> early-target-error.lisp
4876 ** late-error.lisp -> late-target-error.lisp
4877 ** host-defboot.lisp -> early-defboot.lisp
4878 ** code/misc.lisp -> code/target-misc.lisp
4879 ** code/host-misc.lisp -> code/misc.lisp
4880 ** code/numbers.lisp -> code/target-numbers.lisp
4881 ** code/early-numbers.lisp -> numbers.lisp
4882 ** early-host-type.lisp -> early-type.lisp
4883 ** late-host-type.lisp -> late-type.lisp
4884 ** host-typep.lisp -> typep.lisp
4885 ** load.lisp -> target-load.lisp
4886 ** host-load.lisp -> load.lisp
4887 ** host-disassem.lisp -> disassem.lisp
4888 ** host-insts.lisp -> insts.lisp
4889 ** byte-comp.lisp -> target-byte-comp.lisp
4890 ** host-byte-comp.lisp -> byte-comp.lisp
4891 ** host-signal.lisp -> signal.lisp
4892 ** host-defstruct.lisp -> defstruct.lisp
4893 ** late-target-type.lisp -> deftypes-for-target.lisp
4894 Furthermore, several other previously target-only files foo.lisp (e.g.
4895 hash-table.lisp and random.lisp) have been split into a target-and-host
4896 foo.lisp file and a target-only target-foo.lisp file, with their key type
4897 definitions in the target-and-host part, so that the cross-compiler will
4898 know more about target types.
4899 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4900 gone away. In their place are various *BACKEND-FOO* variables
4901 corresponding to the slots of the old structure.
4902 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4903 into the target SBCL has been fixed.
4904 * The chill.lisp system for loading cold code into a running SBCL
4906 * Support for the CMU CL "scavenger hook" extension has been removed.
4907 (It was undocumented and unused in the CMU CL sources that SBCL was
4908 derived from, and stale in sbcl-0.6.1.)
4909 * Various errors in the cross-compiler type system were detected
4910 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4911 (enabling various consistency checks). Many of them were fixed,
4912 but some hard problems remain, so the compiler is back to
4913 running without *TYPE-SYSTEM-INITIALIZED* for now.
4914 * As part of the cross-compiler type system cleanup, I implemented
4915 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4916 * I have started adding UNCROSS calls throughout the type system
4917 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4918 on cross-compiler input files will be able to go away, and various
4920 * CONSTANTP now returns true for quoted forms (as explicitly required
4923 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4925 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4926 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4927 (MAKE-LIST -1). In the longer term, it ought to become true
4928 that declarations are assertions even at SAFETY 1. For now, it's not
4929 quite true even at SAFETY 3, but it's at least more nearly true..
4930 (Note that this change seems to increases the size of the system by
4931 O(5%) and to decrease the speed of the compiler by 20% or more.)
4932 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4933 for the problem of printing dozens of lines of distracting information
4934 about low-level system machinery as part of the top stack frame
4935 on entry to the debugger when an undefined function was called.
4936 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4937 is not reset to COMMON-LISP-USER.
4938 * Compilation of stuff related to dyncount.lisp has been made conditional
4939 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4940 smaller. The various dyncount-related symbols have been moved into
4941 a new "SB-DYNCOUNT" package.
4942 * tty-inspect.lisp has been renamed to inspect.lisp.
4943 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4944 feature has gone away. (When we eventually port to other flavors of
4945 libc and/or Unix, we'll try to make the differences between flavors
4946 invisible at the user level.)
4947 * Various other *FEATURES* tags, and/or their associated conditionals,
4948 have been removed if obsolescent, or given better documentation, or
4949 sometimes given more-mnemonic names.
4951 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4953 * tidied up "make.sh" script
4954 * tidied up system directory structure
4955 * better "clean.sh" behavior
4956 * added doc/FOR-CMUCL-DEVELOPERS
4957 * many many small tweaks to output format, e.g. removing possibly-confusing
4958 trailing #\. character in DESCRIBE-INSTANCE
4959 * (EQUALP #\A 'A) no longer signals an error.
4960 * new hashing code, including EQUALP hashing
4961 * tidied up Lisp initialization and toplevel
4962 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4963 * command line argument processing
4964 * added POSIX-GETENV function to deal with Unix-ish environment variables
4965 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4966 terminating SBCL on EOF
4967 * non-verbose GC by default
4968 * There is no more "sbcl" shell script; the sbcl file is now the C
4969 runtime executable (just like CMU CL).
4970 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4972 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4973 symbol and package information as Lisp native symbol and package objects
4974 instead of strings naming symbols and strings naming packages. This way,
4975 whenever packages are renamed (as in warm init), debug information is
4976 transformed along with everything else.
4977 * tweaked the optimization policy declarations which control the building
4978 of SBCL itself. Now, among other things, the system no longer saves
4979 source location debugging information. (This helps two problems at once
4980 by reducing SBCL size and by keeping SBCL from trying to look for its
4981 sources -- which may not exist -- when reporting errors.)
4982 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4983 debugging and testing purposes
4984 * cleaned up printing, making the printer call PRINT-OBJECT for
4985 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4986 methods, giving nearly-ANSI behavior
4987 * converted almost all special variables to use *FOO* naming convention
4988 * deleted PARSE-TIME functionality, since it can be done portably
4989 * moved some files out of cold init into warm init
4990 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4992 * regularized formatting of source files
4993 * added an install.sh script
4994 * fixed ridiculous memory usage of cross-compiler by making
4995 compiler/alloc.lisp not try to do pooling unless it can hook
4996 itself into the GC of the cross-compilation host. Now the system
4997 builds nicely on my old laptop.
4998 * added :SB-ALLOC in target-features.lisp-expr
4999 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5000 was not implemented)
5001 * re-did condition handling and note reporting in the compiler. Notes
5002 are no longer handled by signalling conditions. Style warnings
5003 and warnings are handled more correctly and reported in such a way
5004 that it's easy to find one or the other in your output (so that you
5005 can e.g. figure out which of many problems caused COMPILE-FILE to
5007 * changed the severity of several compiler warnings from full WARNING
5008 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5009 compiler note reporting so that it doesn't use the condition system
5010 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5011 COMPILE-FILE command)
5012 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5013 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5014 no longer supported, since their implementation was deeply intertwingled
5015 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5016 * removed bogus "support" for compiler macros named (SETF FOO), and
5017 removed the compiler macro for SETF INFO (but only after making a fool
5018 of myself on the cmucl-imp mailing list by posting a bogus patch for
5019 DEFINE-COMPILER-MACRO..)
5020 * Compiled files containing forms which have side effects on the Lisp
5021 reader (such as DEFPACKAGE forms) are now handled more correctly.
5022 (Compiler queuing of top level lambdas has been suppressed by setting
5023 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5024 * deleted various currently-unused source files, e.g. gengc.lisp. They
5025 may be added back at some point e.g. when porting to other architectures,
5026 but until they are it's distracting to distribute them and to try to
5028 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5029 there were so many of them they're just distractions, and UNCROSS is
5030 known to be able to handle the current sources
5031 * moved PROFILE functionality into TRACE, so that it will be clear
5032 how the wrapping and unwrapping of functions when you profile them
5033 interacts with the wrapping and unwrapping of functions when you
5034 trace them. (Actually, the functionality isn't there yet, but at least
5035 the interface specification is there. Hopefully, the functionality will
5036 arrive with some future maintenance release.)
5037 * removed host-oops.lisp
5038 * changed signature of QUIT function to allow UNIX-CODE argument
5039 * fixed READ-SEQUENCE bug
5040 * tweaked verbose GC output so that it looks more like the progress
5041 output that ANSI specifies for functions like LOAD
5042 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5043 * added <http://sbcl.sourceforge.com> to the banner information printed by