1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.25 relative to 1.0.24:
3 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
4 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
5 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
6 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
7 * improvement: reading from a TWO-WAY-STREAM does not touch the output
8 stream anymore making it thread safe to have a concurrent reader and
9 a writer, for instance, in a pipe.
10 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
11 arguments, making compiler-macros for SETF-functions able to inspect
12 their constant arguments.
13 * improvement: COMPILE-FILE reports times with millisecond accuracy
14 (thanks to Luis Oliveira)
15 * optimization: CHAR-CODE type derivation has been improved, making
16 TYPEP elimination on subtypes of CHARACTER work better. (reported
17 by Tobias Rittweiler, patch by Paul Khuong)
18 * bug fix: setting alien structure fields of type struct by value now
19 computes the right offset for the memory copy.
20 * bug fix: compilation problem involving inlined calls to aliens with
21 result type VOID. (reported by Ken Olum)
23 changes in sbcl-1.0.24 relative to 1.0.23:
24 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
25 vector of a multidimensional SIMPLE-ARRAY.
26 * new feature: the system now signals a continuable error if standard
27 readtable modification is attempted. (thanks to Tobias Rittweiler)
28 * new feature: DIRECTORY has been extended with a non-standard keyword
29 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
30 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
31 has been robustified and documented better. (thanks to Robert Goldman)
32 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
33 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
34 * tradeoff: constant FORMAT control strings are now compiled unless
35 SPACE > SPEED (previously only when SPEED > SPACE.)
36 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
38 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
40 * bug fix: lexical type declarations are now correctly reported by
41 SB-CLTL2. (reported by Larry D'Anna)
42 * bug fix: STRING-TO-OCTETS did not handle :START properly when
43 using UTF-8 as external format. (thanks to Luis Oliveira)
44 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
45 are signalled correctly. (thanks to Stas Boukarev)
46 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
47 designator. (thanks to Tobias Rittweiler)
48 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
49 designator, and returns T instead of the function. (thanks to
51 * bug fix: direct superclasses of STANDARD-CLASS and
52 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
53 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
54 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
55 when no class with the named slot yet exists no longer causes a
56 compile-time style-warning.
57 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
58 in safe code. (reported by Didier Verna)
59 * bug fix: #430; nested structure constructors can stack allocate.
60 * bug fix: on some 64-bit platforms dynamic space size was truncated
61 to #xffff0000 bytes. (reported by Benjamin Lambert)
62 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
63 REPL unusable. (reported by Daniel Herring)
64 * bug fix: return values of READ-SEQUENCE did not take :START into
65 account on file streams, regressions since 1.0.12.22. (reported by
66 Thomas Russ, patch by Paul Khuong)
67 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
68 method specializer used to confuse permuation vector optimization.
69 * bug fix: system inserted bogus implicit type declarations for local
70 special variables in DEFMETHOD bodies.
71 * bug fix: #354; duplicated frames in backtraces due to
72 non-tail-call-optimized XEPs to functions with return type NIL
74 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
75 initializes structure object slots according to DEFSTRUCT initforms,
76 and DEFSTRUCT forms :INCLUDEind structure classes defined using
77 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
78 (reported by Bruno Haible and Stephen Wilson)
79 * bug fix: #395; fill-pointer output streams used now support
80 element-type BASE-CHAR as well.
81 * bug fix: compiler error when attempting to derive return value of
82 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
84 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
86 * bug fix: Mac OS X binaries should now be portable between Leopard
89 changes in sbcl-1.0.23 relative to 1.0.22:
90 * enhancement: when disassembling method functions, disassembly
91 for the associated fast function is also produced.
92 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
94 * optimization: printing with *PRINT-PRETTY* true is now more
95 efficient as long as the object being printed doesn't require
96 special handling by the pretty printer.
97 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
98 now interact correctly with type declarations.
99 * partial bug fix: PCL detects infinite recursion during wrapper
100 validation. (thanks to Attila Lendvai)
101 * bug fix: #426; nested function calls are inlined properly.
102 Previously if FOO was an inline function, in calls of the form
103 (FOO (FOO ...)) the outer call was not inlined.
104 * bug fix: long long arguments passed in registers to alien
105 functions on PowerPC Linux and NetBSD are now handled correctly
106 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
108 changes in sbcl-1.0.22 relative to 1.0.21:
109 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
110 for the shared object in the current directory, but passes the native
111 namestring of the designated pathname to the operation system's shared
112 object loading function as-it.
113 * minor incompatible change: --disable-debugger toplevel option now takes
114 effect before processing of initialization files and --eval or --load
116 * new feature: new commandline argument: --script, which supports
117 shebang lines. See documentation for details. (based on work by
119 * new feature: SAVE-LISP-AND-DIE can save current values of
120 --dynamic-space-size and --control-stack-size in the executable core,
121 causing it to skip normal runtime option processing. See documentation
122 for details. (thanks to Zach Beane)
123 * enhancement: inoccous calls to EVAL or generic functions dispatching
124 on subclasses of eg. STREAM no longer cause compiler notes to appear.
125 * enhancement: the system no longer resignals errors from --load and
126 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
127 associated with the original error to be lost. (thanks to Ariel
129 * enhancement: :DONT-SAVE keyword argument has been added to
130 LOAD-SHARED-OBJECT for controlling interaction with
131 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
132 the effects of an earlier LOAD-SHARED-OBJECT call.
133 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
134 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
135 provided. (reported by Cedric St-Jean)
136 * bug fix: circularity handling in the reader did not treat raw
137 structure slots correctly. (reported by Cedric St-Jean)
138 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
139 file descriptors when there were none.
140 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
141 was broken. (reporteed by Willem Broekema)
142 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
143 pathnames without a directory.
144 * bug fix: COMPILE-FILE did not warn about undefined variable
145 references at toplevel, and LOAD of the resulting fasl did
147 * bug fix: functions with non-required arguments used to end up with
148 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
149 * bug fix: redefining a function with non-required arguments didn't
150 update the system's knowledge about its call signature properly.
151 * bug fix: fixed #431; incompatible alien record type redefinitions
152 are detected and handled. (reported by Neil Haven)
153 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
154 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
156 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
157 after alien stack frames.
158 * bug fix: strings passed to mk{s,d}temp lacked null termination
160 changes in sbcl-1.0.21 relative to 1.0.20:
161 * new feature: the compiler is able to track the effective type of a
162 generic function across method addition and removal.
163 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
164 appropriately typed structure slots without locking.
165 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
166 information like those gathered by TIME using a programming-friendly
168 * new feature: TIME reports time taken even if the form performs a
169 non-local transfer of control.
170 * enhancement: reduced conservativism on GENCGC platforms: on
171 average 45% less pages pinned (measured from SBCL self build).
172 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
173 mutate constant symbols or violate declaimed type of the symbol.
174 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
175 sleeping on the semaphore in heavily contested semaphores.
176 * bug fix: semaphores and condition variables were not interrupt
178 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
179 owned by other threads anymore.
180 * bug fix: FIND on lists called KEY outside the specified
181 subsequence. (reported by budden)
182 * bug fix: LOG doesn't use single-float intermediate results when
183 given mixed integer and double-float arguments, leading to better
184 precision. (reported by Bob Felts)
185 * bug fix: LOG with base zero returned values of inconsistent type.
187 changes in sbcl-1.0.20 relative to 1.0.19:
188 * minor incompatible change: OPTIMIZE qualities
189 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
190 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
191 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
192 * documentation: some slot access efficiency guidelines have been
193 added to the user manual.
194 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
195 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
196 as ASSOC and MEMEBER.
197 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
198 to more efficient EQ-comparison versions more often.
199 * optimization: enhanced derivation of DOLIST iteration variable type
201 * optimization: constant folding of simple (LIST ...) forms as DOLIST
203 * optimization: runtime lookup of function definitions can be
204 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
205 * optimization: compiler is able to derive the return type of
206 (AREF (THE STRING X) Y) as being CHARACTER.
207 * optimization: CLRHASH on empty hash-tables no longer does pointless
208 work. (thanks to Alec Berryman)
209 * optimization: REPLACE deftransforms don't punt when :START1 or
211 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
212 no longer emits a code deletion note. (reported by Andrew
214 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
215 functions with an odd number of &OPTIONAL arguments, a &REST
216 argument, and one or more &KEY arguments at the call site.
217 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
218 arguments appeared at call sites as well.
219 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
220 READ-LINE &co can no longer read from them afterwards. (reported
222 * bug fix: fixed #427: unused local aliens no longer cause compiler
223 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
225 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
226 alien-stack leakage. (reported by Andy Hefner)
227 * bug fix: PROGV signals an error when an attempt to violate declared
228 type of a variable or bind a constant is made.
229 * bug fix: SET signals an error when an attempt to violate declared
230 type of a variable is made.
231 * bug fix: restart computation during the execution of a restart
232 test function no longer causes infinite recursion. (reported by
234 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
235 signals an error. (thanks to Pierre Mai)
236 * bug fix: EXPORT left symbol unexported in conflict situations.
237 (thanks to Michael Weber)
238 * bug fix: correctly handle name conflicts involving CL:NIL.
239 (thanks to Michael Weber)
240 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
241 conflicts arising from USEing package with conflicting symbols
242 correctly. (thanks to Michael Weber)
244 changes in sbcl-1.0.19 relative to 1.0.18:
245 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
246 warnings that go otherwise unhandled will be muffled if they are
247 of the type that's the value of this variable.
248 * optimization: stack allocation is slightly more efficient on x86
250 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
251 where a raw slot always is initialized using the initform whose
252 type is not know sufficiently well a compile-time are now compiled
253 correctly. (reported by John Morrison)
254 * bug fix: compiler no longer makes erronous assumptions in the
255 presense of non-foldable SATISFIES types.
256 * bug fix: stack analysis missed cleanups of dynamic-extent
257 arguments in non-let-converted calls to local functions.
258 * improvements to the Windows port:
259 ** adjusted address spaces for building on both Win32 and
260 Win64. (thanks for John Connors)
261 * fixed some bugs revealed by Paul Dietz' test suite:
262 ** interval arithmetic during type derivation used inexact integer
263 to single-float coercions.
264 ** arithmetic operations involving large integers and single
265 floats give the same results in compiled and interpreted code.
266 ** deriving the result type of COERCE no longer signals an error
267 if the derived type of the second argument is a MEMBER type
268 containing invalid type specifiers.
269 ** ADJOIN with constant NIL as second argument works correctly.
270 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
272 changes in sbcl-1.0.18 relative to 1.0.17:
273 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
274 profiles only the current thread.
275 * minor incompatible change: changes to SYMBOL-VALUE of constants
276 defined with DEFCONSTANT now signal an error.
277 * enhancement: SB-SPROF now has support for wallclock profiling,
278 and is also able to profile specific threads. REPORT output
279 has also additional sorting options.
280 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
282 * optimization: structure allocation has been improved
283 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
284 ** out of line constructors are ~10% faster.
285 ** inline constructors are ~15% faster.
286 ** inline constructors are capable of dynamic extent allocation
287 (generally on x86 and x86-64, in some cases on other platforms
289 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
291 * optimization: file compiler is now able to coalesce non-circular
292 lists, non-base strings, and bit-vectors. Additionally, constants
293 are never referenced through SYMBOL-VALUE at runtime.
294 * optimization: code defining methods on PRINT-OBJECT (and other
295 generic functions in the COMMON-LISP package) now loads faster.
296 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
298 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
299 fasl is now deleted. (reported by Attila Lendvai)
300 * bug fix: READ-LINE always returned NIL for the last line in files.
301 (reported by Yoshinori Tahara)
302 * bug fix: more accurate disassembly annotations of foreign function
303 calls. (thanks to Andy Hefner)
304 * bug fix: trimming non-simple strings and non-string string
305 designators when the there is nothing to trim works properly.
306 (thanks to James Knight)
307 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
308 (thanks to Travis Cross)
309 * fixed some bugs revealed by Paul Dietz' test suite:
310 ** NIL is a valid function name (regression at 1.0.13.38)
311 ** FILL on lists was missing its return value (regression at 1.0.12.27)
312 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
313 fill pointers properly (regression at 1.0.12.23)
314 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
315 displacement indices properly (regression at 1.0.12.23)
317 changes in sbcl-1.0.17 relative to 1.0.16:
318 * temporary regression: user code can no longer allocate closure
319 variable storage on stack, due to bug 419 without explicitly
320 requesting it. Please consult sbcl-devel for advice if you need to
321 use this feature in the meanwhile.
322 * new feature: runtime argument --control-stack-size can be used to
323 adjust thread default control stack size.
324 * enhancement: improved TIME output
325 ** all times are reported using the measured accuracy (milliseconds
326 for real and GC times, microseconds for everything else.)
327 ** processor cycle counts on x86 and x86-64.
328 ** interpreted forms are counted for both evaluator modes.
329 ** number of lambdas converted by the compiler is reported.
330 ** CPU percentage report (computed from real and total run time.)
331 ** more comprehensive run time reporting, using a condenced format
332 ** interperted form, lambda, and page fault counts are omitted
334 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
336 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
337 * optimization: two argument forms of LAST are upto ~10% faster
338 in normal SPEED policies.
339 * optimization: NCONC no longer needs to heap cons its &REST list
340 in normal SPEED policies.
341 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
343 * bug fix: UNION and NUNION work with :TEST-NOT once more,
344 regression since 1.0.9.1. (thanks to Eric Marsden)
345 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
346 since 1.0.15.36. (thanks to Paul Khuong)
347 * bug fix: LAST when always returned the whole list when given a bignum
348 as the second argument.
349 * bug fix: dynamic extent allocation of nested lists and vectors
350 could leak to otherwise accessible parts.
351 * bug fix: invalid optimization of heap-allocated alien variable
353 * bug fix: fasl header checking is less vulnerable to different
354 platform word lengths.
355 * bug fix: more correct assembler syntax for GNU binutils
356 2.18.50.0.4 support. (thanks to Marijn Schouten)
357 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
359 * bug fix: the fopcompiler can handle LOCALLY forms (with no
360 declarations) successfully. (reported by Attila Lendvai)
362 changes in sbcl-1.0.16 relative to 1.0.15:
363 * minor incompatible change: revert the changes to sb-posix's error
364 signaling added in 1.0.14.
365 * minor incompatible change: change PROBE-FILE back to returning
366 NIL whenever we can't get a truename, as was the case before 1.0.14.
367 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
368 inherits from ERROR instead of just CONDITION.
369 * new feature: SB-INTROSPECT can provide source locations for instances
370 as well. (thanks to Tobias Rittweiler)
371 * optimization: binding special variables now generates smaller code
372 on threaded platforms.
373 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
374 and cases where no :TEST is given but the compiler can infer that
375 the element to search is of type (OR FIXNUM (NOT NUMBER)).
376 * optimization: better LOGNOT on fixnums.
377 * optimization: modular arithmetic for a particular requested width
378 is implemented using a tagged representation unless a better
379 representation is available.
380 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
381 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
382 for wellformedness and returns a specialized vector. (reported by
383 Francois-Rene Rideau)
384 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
385 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
386 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
387 unscheduling timer at the same time as another timer fires.
388 * bug fix: don't reschedule timers for dead threads.
389 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
390 * bug fix: copying output from RUN-PROGRAM to a stream signalled
391 bogus errors if select() was interrupted.
392 * enhancement: add support for fcntl's struct flock to SB-POSIX.
394 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
395 * enhancement: cleaner backtraces for interactive interrupts, as
396 well as other cases where the interesting frames used to be
397 obscured by interrupt handling frames.
398 * enhancement: untracing a whole package using (UNTRACE "FOO") is
399 now supported, and tracing a whole package using (TRACE "FOO") now
400 traces SETF-functions as well.
401 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
402 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
403 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
404 * unreadably printed representation of hash-tables now includes
406 * bug fix: partially fixed #188: type propagation from assignments
407 is now more efficient.
408 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
409 'DOUBLE-FLOAT) are not flushable.
410 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
411 full address of the object, and none of the tag bits.
412 * bug fix: readably printing hash-tables now respects other printer
413 control variables. (reported by Cedric St-Jean)
414 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
415 keyword with MAKE-HASH-TABLE.
416 * bug fix: export SB-POSIX:MKSTEMP.
417 * bug fix: SORT was not interrupt safe.
418 * bug fix: XREF accounts for the last node of each basic-block as
420 * bug fix: MAKE-INSTANCE optimizations interacted badly with
421 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
422 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
423 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
424 create obsolete instances in the case of redefinition or
425 obsoletion of a superclass. (thanks to Andy Hefner)
426 * bug fix: Support for the Alpha architecture has been revived; it had
427 suffered somewhat from lack of maintenance since sbcl-1.0.
428 * improvements to the Windows port:
429 ** The system detects the codepage to use at startup, instead of
430 using the value from the saved core. (thanks to Kei Suzuki)
432 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
433 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
434 (see documentation for details.)
435 * revived support for OpenBSD (contributed by Josh Elsasser)
436 * partially fixed bug #108: ROOM no longer suffers from occasional
437 (AVER (SAP= CURRENT END)) failures.
438 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
439 bodies no longer cause a WARNING to be signalled. (reported by
441 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
442 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
443 the bug in TRUNCATE.) (reported by Michael Weber)
444 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
445 no samples. (reported by Andy Hefner)
446 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
447 no longer appear as (NIL ...) frames in backtraces.
448 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
449 is now actually exported from SB-EXT as documented. (reported by
451 * bug fix: sb-aclrepl now correctly understands how to inspect
452 single-floats on 64-bit platforms where single-floats are not boxed.
453 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
454 yet been finalized. (reported by Levente Meszaros)
455 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
456 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
457 SBCL-specific optimize qualities.
459 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
460 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
461 an executable in the search path, and does so in the child
462 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
463 been removed; it can be found in the CVS history, for somebody who
464 needs that search behavior (see the manual).
465 * minor incompatible change: compiler policy re. weakening type
466 checks has changed: now type checks are weakened only if SAFETY < 2
468 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
469 unparsing of directory pathnames as files. Analogously,
470 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
471 filename to parse into a directory pathname.
472 * enhancement: implicit generic function creation now signals a
473 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
474 users can bind handlers for and muffle around calls to LOAD.
475 * enhancement: RUN-PROGRAM allows unicode arguments and environments
476 to be used (using the default stream external format), and allows
477 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
478 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
479 strings and vectors whose element-type or simplicity is not fully
480 known at compile-time.
481 * optimization: STRING-TRIM and related functions no longer allocate
482 a new string when no trimming needs to be performed. These functions
483 are also faster than before when the input string has been declared
485 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
486 * optimization: READ-LINE is significantly faster for files containing
488 * optimization: non-open coded uses of character comparison operators
489 (e.g. char=) no longer cons when called with more than one parameter
490 on platforms supporting dynamic-extent allocation.
491 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
492 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
493 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
495 * bug fix: some sequence functions elided bounds checking when
497 * bug fix: too liberal weakening of union-type checks when SPEED >
499 * bug fix: more bogus fixnum declarations in ROOM implementation
502 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
503 * new feature: MAKE-HASH-TABLE now experimentally accepts a
504 :SYNCHRONIZED argument, which makes the hash-table safe for
505 concurrent accesses (but not iteration.) See also:
506 SB-EXT:WITH-LOCKED-HASH-TABLE, and
507 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
508 * optimization: CONCATENATE on strings is an order of magnitude faster
509 in code compiled with (> SPEED SPACE).
510 * optimization: SUBSEQ is ~50% faster on lists.
511 * bug fix: bug 417 fixed -- source location reporting is now more robust.
512 * bug fix: SUBSEQ on a list will now correctly signal an error if if
513 END is smaller then START.
514 * bug fix: SB-PROFILE will no longer report extra consing for nested
515 calls to profiled functions.
516 * bug fix: ROOM implementation had bogus fixnum declarations which
517 could cause type-errors when calling ROOM on large images.
518 * bug fix: if file compilation is aborted, the partial fasl is now
519 deleted, and COMPILE-FILE returns NIL as the primary value.
520 * bug fix: number of thread safety issues relating to SBCL's internal
521 hash-table usage have been fixed.
522 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
523 be returned from its body when the values were being returned
524 using unknown-values return convection and the W-P-O was wrapped
525 inside an UNWIND-PROTECT.
526 * bug fix: sb-posix should now compile again under Windows, enabling
529 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
530 * incompatible change: hash-table accessor functions are no longer
531 automatically protected by locks. Concurrent accesses on the same hash-table
532 from multiple threads can give inconsistent results or even corrupt the
533 hash-table completely. Multi-threaded applications should do their own
534 locking at the correct granularity. In the current implementation it is
535 still safe to have multiple readers access the same table, but it's not
536 guaranteed that this property will be maintained in future releases.
537 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
538 and will signal an error at runtime.
539 * enhancement: SB-THREAD package now exports a semaphore interface.
540 * enhancement: CONS can now stack-allocate on x86 and
541 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
543 * enhancement: nested lists can now be stack allocated on
544 platforms providing stack allocation support.
545 * enhancement: dynamic-extent support has been extended to support
546 cases where there are multiple possible sources for the stack
548 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
549 if the mutex is uncontested on Linux.
550 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
551 as specified by the CLHS. (thanks to Tobias Rittweiler)
552 * bug fix: NaN comparison now works on x86-64.
553 * bug fix: CLOSE :ABORT T on a stream with pending output now
555 * bug fix: instances of non-standard metaclasses using standard
556 instance structure protocol sometimes missed the slot type checks
558 * bug fix: known functions can be inlined in high-debug code.
560 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
561 * minor incompatible change: the MSI installer on Windows no longer
562 associates .lisp and .fasl files with the installed SBCL.
563 * minor incompatible change: :UNIX is no longer present in *FEATURES*
564 on Windows. (thanks to Luis Oliviera)
565 * new feature: SB-CLTL2 contrib module now implements
566 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
567 * optimization: scavenging weak pointers is now more efficient,
568 requiring O(1) instead of O(N) per weak pointer to identify
569 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
570 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
571 method bodies using constant slot-names when the first argument is
572 a specializer parameter for the method.
573 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
574 names, when the class of the instance is a direct instance
575 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
576 as slow as the constant slot-name case.)
577 * optimization: member type construction is now O(N) instead
579 * optimization: UNION and NUNION are now O(N+M) for large
580 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
582 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
583 now more readable in environments like Slime which display it.
584 (thanks to Tobias C. Rittweiler)
585 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
586 was able to infer the correct argument type for the object on which
587 the CAS operation was being performed.
588 * bug fix: copy propagation interfered with parallel assignment
589 semantics in local calls. (reported by Paul Khuong)
590 * bug fix: the signed modular fixnum shift compiled to wrong code on
591 x86 and x86-64. (spotted by a slight modification to some of
594 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
595 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
596 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
597 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
599 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
600 and generic function now print the object identity for anonymous
601 instances. (thanks to Attila Lendvai)
602 * enhancement: as an extension to MOP, SBCL now supports SETF of
603 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
604 (thanks to Attila Lendvai)
605 * enhancement: sb-cover has an alternate annotation mode which puts
606 the form annotations at the car of the form, instead of annotating
607 it completely. The benefit of this mode is that it shows better
608 which forms were instrumented by the compiler.
609 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
610 by printer control variables. (reported by Dan Corkill)
611 * bug fix: system leaked memory when delayed output was performed by
612 the OS in smaller chunks then expected. (thanks to David Smith)
613 * bug fix: system leaked memory when file streams were not closed
615 * bug fix: large objects written to slow streams that were modified
616 after the write could end up with the modified state written to
617 the underlying file descriptor.
618 * bug fix: multiple threads operating in parallel on the same stream
619 could cause buffer-overflows.
620 * bug fix: source location information is stored correctly
621 (broken since 1.0.6). This bug would generally show up as the
622 Slime debugger highlighting the wrong form when the sldb-show-source
624 * bug fix: Branch forms are again annotated as branches in the sb-cover
626 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
627 on x86-64. (reported by Gregory Vanuxem)
628 * bug fix: EQUALP could return wrong results for structures with raw
629 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
630 word). (reported by Vjacheslav Fyodorov)
631 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
634 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
635 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
636 atomic compare-and-swap operations on threaded platforms.
637 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
638 allows assigning a global minimum value to optimization qualities
639 (overriding proclamations and declarations).
640 * enhancement: closed over variables can be stack-allocated on x86
642 * performance bug fix: GETHASH and (SETF GETHASH) are once again
644 * optimization: slot definition lookup is now O(1). This speeds up
645 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
646 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
647 * optimization: ASSOC and MEMBER can now be open-coded for all
648 combinations of keyword arguments when second argument is constant
649 and SPEED >= SPACE. In other cases a specialized version is
651 * bug fix: using obsoleted structure instances with TYPEP and
652 generic functions now signals a sensible error.
653 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
654 (reported by Kristoffer Kvello)
655 * bug fix: backtrace construction is now more careful when making
656 lisp-objects from pointers on the stack, to avoid creating bogus
657 objects that can be seen by the GC.
658 * bug fix: defaulting of values in contexts expecting more than 7
659 variables now works on x86-64. (reported by Christopher Laux)
660 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
662 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
663 as the property-list of a symbol.
664 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
665 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
666 situations requested, are once again file-compileable. (reported
669 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
670 * MOP improvement: support for user-defined subclasses of
671 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
672 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
673 the expansion of DEFMETHOD, is responsible for generating a form
674 which creates a list of specializers when evaluated. Additional
675 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
676 debugging and introspective support.
677 * minor incompatible change: the (unsupported) spinlock interface
678 has changed: free spinlock now has the value NIL, and a held spinlock
679 has the owning thread as its value.
680 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
681 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
683 * enhancement: name of a socket-stream is now "a socket" instead of
685 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
686 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
687 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
688 for generic functions. (Thanks to Tobias C. Rittweiler)
689 * optimization: bignum printing speed has been improved by 20-40%
690 (depending on the bignum size.)
691 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
693 * bug fix: the cache used by the CLOS to store precomputed effective
694 methods, slot offsets, and constant return values is now thread and
696 * bug fix: generic function dispatch function updating is now thread
697 and interrupt safe (in the sense that the known issues have been
699 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
700 * bug fix: interning EQL-specializers is now thread and interrupt safe.
701 * bug fix: asdf systems with dependencies to the SB-POSIX or
702 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
703 * bug fix: interrupt safety of applicable method computation has been
706 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
707 * new contrib: sb-cover, an experimental code coverage tool, is included
709 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
710 significantly faster.
711 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
712 produce more efficient code on x86-64 if the compiler can determine
713 that (+ INDEX <constant>) does not require a bounds check and FOO
714 has an element type at least 8 bits wide.
715 * enhancement: a new, experimental synchronous timeout facility is
716 provided. Refer to SB-SYS:WITH-DEADLINE for details.
717 * enhancement: when a symbol name conflict error arises, the
718 conflicting symbols are always printed with a package prefix.
719 (thanks to Kevin Reid)
720 * enhancement: stepping is now once again supported on the SPARC and
721 MIPS platforms. (It is also now more likely to work on CheneyGC
723 * enhancement: sb-sprof can now also track and report accurate call
725 * bug fixes: the treatment of non-standard subclasses of
726 SB-MOP:SPECIALIZER is more correct.
727 * incompatible change: PURIFY no longer copies the data from the
728 dynamic space into the static and read-only spaces on platforms
729 that use the generational garbage collector
730 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
732 * bug fix: GC race condition occasionally resulting in crashes with
733 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
735 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
737 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
738 a STYLE-WARNING to be signalled (regression from 1.0.4.)
739 * bug fix: an asynchronous interrupt could previously leave the
740 system running with GC inhibited.
741 * bug fix: a DECLARE form evaluated at top-level now causes an error
742 rather than silently (or verbosely) returning NIL.
743 * bug fix: trying to dissassemble functions compiled at high DEBUG could
744 result in a error being signalled due to source form lookup errors.
745 (reported by Peter Graves)
747 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
748 * incompatible change: removed writer methods for host-ent-name,
749 host-ent-addresses -- changing the values did not update the DNS
751 * minor incompatible change: changed experimental JOIN-THREAD interface
752 * documentation: the manual now lists reader and writer methods
753 in class slot documentation sections. (thanks to Richard M Kreuter)
754 * documentation: unwinding from asyncronous events has been
755 documented as unsafe.
756 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
757 in multithreaded application code.
758 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
759 platforms. (thanks to James Anderson for the optimization hint)
760 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
762 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
763 variants no longer cons.
764 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
765 their NOT- variants no longer cons.
766 * optimization: EQUAL hash tables no longer use SXHASH for objects
767 of all data types, but instead use an EQL hash for types for which
768 EQUAL is the same as EQL.
769 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
770 are significantly faster.
771 * optimization: new STRING-OUTPUT-STREAM implementation is much
772 faster for large outputs and conses 30% less on average.
773 * enhancement: XREF information is now collected for references made
774 to global variables using SYMBOL-VALUE and a constant argument.
775 * enhancement: SIGINT now causes a specific condition
776 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
777 * bug fix: FILE-POSITION used to signal an error in some cases where
778 ANSI requires it to return NIL.
779 * bug fix: ADJUST-ARRAY is now interrupt-safe.
780 * bug fix: adding and removing fd-handlers is now interrupt-safe.
781 * bug fix: inlined calls to C now ensure 16byte stack alignment on
783 * bug fix: bad type declaration in the CLOS implementation has
784 been fixed. (reported by James Anderson)
785 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
786 (thanks to Lutz Euler)
787 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
788 required by the CLHS. (reported by Samium Gromoff)
789 * bug fix: dead unbound variable references now signal an error.
790 (reported by Marco Monteiro)
791 * bug fix: / with an unused value was being deleted in safe code.
792 (thanks to Marco Monteiro and Kevin Reid)
793 * bug fix: number of characters that can be written onto a single
794 line in a file is unlimited.
795 * bug fix: some GC deadlocks caused by asynchronous interrupts have
796 been fixed by inhibiting interrupts for when GC is disabled.
797 * bug fix: some interrupt safety issues with GETHASH, (SETF
798 GETHASH), CLRHASH and REMHASH have been fixed.
799 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
800 specifier no longer causes infinite recursion.
801 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
802 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
803 * bug fix: an &environment argument with the correct variable information
804 is passed to macros that are expanded during byte compilation.
805 (reported by Samium Gromoff)
806 * bug fix: a logic error was causing the hash function for bignums to
807 have excessive amounts of collisions. (reported by Faré Rideau)
808 * bug fix: modifying the contents of an array could change the return
809 value of SXHASH on that array, which is only allowed for strings
810 and bit vectors. (bug introduced in 0.9.16)
811 * improvement: the x86-64/darwin port now passes all tests (except
812 for the debugger tests) but should still be considered
813 experimental until this is fixed.
814 * improvement: a style-warning is signaled for CASE (etc) clauses with
815 duplicate keys. (thanks to Kevin Reid)
816 * improvement: macos/x86 and macos/x86-64 now use mach exception
817 handlers for dealing with illegal instructions (for trapping and
818 error handling) and memory protection violations (for GC).
820 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
821 * new platform: experimental support for x86-64/darwin (MacOS).
822 * incompatible change: the thread-safe (on most platforms) getaddrinfo
823 and getnameinfo sockets functions are used instead of gethostbyaddr
824 and gethostbyname, on platforms where the newer functions are available.
825 As a result, the ALIASES field of HOST-ENT will always be NIL on these
827 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
828 don't print the startup banner, but behave as if --noinform was passed
829 as a command line argument. (thanks to Kevin Reid)
830 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
831 * optimization: code using alien values with undeclared types is much faster.
832 * optimization: the compiler is now able to open code SEARCH in more cases.
833 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
834 * bug fix: using standardized COMMON-LISP special variables as loop
835 variables no longer signals bogus package lock violations. (reported
837 * bug fix: declaring local loop variables to be of a range-limited type
838 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
839 (reported by Andras Simon)
840 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
841 bugs remain on x86-64.)
842 * bug fix: the #= and ## reader macros now interact reasonably with
843 funcallable instances.
844 * bug fix: type-checks for function arguments were compiled using the
845 compiler policy settings of the wrong lexical environment (in 1.0.2
847 * bug fix: SHADOW accepts characters as string designators, as required
848 by the spec (thanks to Eric Marsden)
849 * bug fix: fixed GC safety issues when foreign functions are called with
850 non-base strings as arguments
851 * bug fix: more consistent error output for fatal-compiler-warnings, like
853 * bug fix: functions with proper names were showing up as NIL in
854 backtraces (reported by Edi Weitz, regression in 1.0.2)
856 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
857 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
858 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
859 produce more efficient code on the x86 if the compiler can determine
860 that (+ INDEX <constant>) does not require a bounds check and FOO
861 has an element type at least 8 bits wide.
862 * bug fix: references to undefined variables are handled the same way
863 in toplevel forms as in the normal compiler
864 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
866 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
867 (thanks to Jon Buller)
868 * improvement: faster compilation times for complex functions
869 * improvement: added readlink support to SB-POSIX (thanks to Richard
872 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
873 * improvement: experimental support for mach exception handling on
874 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
876 * improvement: support for GBK external format.
877 (thanks to Chun Tian (binghe))
878 * improvement: the debugger now displays variables that have been closed
879 over, in code compiled with (DEBUG 2) or higher
880 * improvement: support for executable cores on NetBSD (thanks to
882 * new feature: added a RESTART-FRAME debugger command
883 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
884 be used to provide an implementation for FILE-POSITION on Gray streams
885 (thanks to Eric Marsden)
886 * new feature: add syslog, openlog and closelog support to SB-POSIX
887 (thanks to Richard Kreuter)
888 * optimization: the function call overhead in code compiled with
889 a high DEBUG optimization setting is significantly
890 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
891 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
892 (thanks to Tony Martinez)
893 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
894 evaluated once (reported by Kevin Reid)
895 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
896 works again (thanks to Kilian Sprotte)
897 * bug fix: an error is signaled for tagbodies with duplicate tags
898 (thanks to Stephen Wilson)
899 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
900 * bug fix: Win32 port can now handle foreign code unwinding Lisp
901 stack frames from alien callbacks.
902 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
903 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
904 65k pages (thanks to David Woodhouse)
905 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
907 changes in sbcl-1.0.1 relative to sbcl-1.0:
908 * new platform: FreeBSD/x86-64, including support for threading.
909 * new feature: the compiler stores cross-referencing information
910 about function calls (who-calls), macroexpansion (who-macroexpands)
911 and special variables (who-binds, who-sets, who-references) for code
912 compiled with (< SPACE 3). This information is available through the
913 sb-introspect contrib.
914 * new feature: users may subclass SEQUENCE, and have instances of
915 these classes interoperate with standard Common Lisp functions if
916 a number of methods are defined. (This feature is experimental
917 and the interface subject to change based on feedback from SBCL
918 users and the general community)
919 * improvement: sb-sprof traces call stacks to an arbitrary depth on
920 x86/x86-64, rather than the previous fixed depth of 8
921 * improvement: another pthread back-end of mutex "pthread-futex".
922 * bug fix: non-ascii command-line arguments are processed correctly
923 (thanks to Yaroslav Kavenchuk)
924 * bug fix: non-required arguments were not passed correctly when a method
925 defined using DEFMETHOD was called from a mop-generated method using
926 CALL-NEXT-METHOD (reported by Pascal Costanza)
927 * bug fix: recursion is now permitted in accessors through
928 SLOT-UNBOUND. (reported by Pascal Costanza)
929 * bug fix: an error was signaled at startup if the HOME environment
930 variable was defined, but had an empty value (reported by Peter Van Eynde)
931 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
932 signal a PROGRAM-ERROR, not a BUG.
933 * bug fix: SB-POSIX:READDIR works when built with large file support.
934 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
936 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
937 for better automatic indentation support. (thanks to Matt Pillsbury)
938 * optimization: loading generic functions no longer takes O(n^2) time,
939 proportional to the amount of methods in the generic function
940 (reported by Todd Sabin and Jeremy Brown)
941 * optimization: the FIND and POSITION family of sequence functions
942 are significantly faster on arrays whose element types have been
944 * improvements to the Windows port:
945 ** Intermittent heap corruption problems have been fixed. (thanks
946 to Alastair Bridgewater)
947 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
949 ** Lisp is able to unwind foreign exception frames from alien
950 callbacks. (thanks to Alastair Bridgewater)
952 changes in sbcl-1.0 relative to sbcl-0.9.18:
953 * improvement: experimental support for threading on FreeBSD/x86.
954 (thanks to NIIMI Satoshi)
955 * improvement: runtime option --dynamic-space-size can be used
956 to set the size of the dynamic space reserved on startup.
957 * improvement: floating point modes in effect are now saved in
958 core, and restored on startup.
959 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
960 startup, not time since first call to GET-INTERNAL-REAL-TIME.
961 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
962 threads are not running after *SAVE-HOOKS* have run.
963 * improvement: writes to CLOS instance slots are type-checked in code
964 compiled with (SAFETY 3)
965 * improvement: floating-point exception handling on FreeBSD (thanks to
967 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
968 (thanks to Zach Beane)
969 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
971 * improvement: added support for the Shift-JIS external format.
972 (contributed by NIIMI Satoshi)
973 * improvement: callbacks are supported on Linux/PPC. (thanks to
975 * bug fix: compiler bug triggered by a (non-standard) VALUES
976 declaration in a LET* was fixed. (reported by Kaersten Poeck)
977 * bug fix: file compiler no longer confuses validated and already
978 dumped structurres. (reported by Kaersten Poeck)
979 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
980 fill-pointer signals a type-error as required. (thanks to
982 * bug fix: disassemly of funcallable instances works.
983 * bug fix: single stepping on PPC.
984 * bug fix: fix thread-safety problems in the type system (generally
985 manifesting as nonsensical errors like "STRING is a bad type specifier
986 for sequences" or "The value 1 is not of type FIXNUM")
987 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
988 (reported by Josip Gracin)
989 * bug fix: an error is signaled for attempts to displace arrays with
990 incompatible element types (thanks to Mario Mommer)
991 * bug fix: more correct handling of wide characters in debug info
992 (bug reported by Attila Lendvai and fixed by Juho Snellman)
993 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
994 and don't cause extra consing
995 * optimization: MAP and MAP-INTO are significantly faster on vectors
996 whose elements types have been declared.
997 * Improvements to SB-SPROF:
998 ** Support for allocation profiling
999 ** Reduced profiling overhead, especially for long profiling runs
1000 * Improvements to the Windows port:
1001 ** floating point exceptions are now reported correctly.
1002 ** stack exhaustion detection works partially.
1003 ** more accurate GET-INTERNAL-REAL-TIME.
1004 ** better RUN-PROGRAM behaviour in case of errors in the child
1006 ** PROBE-FILE now simplifies pathnames correctly.
1007 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1008 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1009 1st 1970 (although time timezone data will be unreliable).
1010 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1012 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1013 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1014 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1016 * bug fix: two potential GC deadlocks affecting threaded builds.
1017 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1018 returns T (reported by Anton Kazennikov)
1019 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1020 with non-variable places
1021 * bug fix: remove a race condition in the setting of
1022 funcallable-instance functions, this should make threaded CLOS
1023 code more stable against memory faults.
1024 * bug fix: corruption of specials when unbinding is interrupted by an
1025 asynchronous unwind (reported by Hannu Koivisto)
1026 * improvement: the debugger will now also display local variables that
1027 are only used once, for code compiled with a DEBUG optimization quality
1030 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1031 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1032 * incompatible change: External-format support for FFI calls. The
1033 SB-ALIEN:C-STRING no longer implies an ASCII
1034 external-format. Instead the string is subject to external-format
1035 conversion. Additionally return values of type SB-ALIEN:C-STRING
1036 are by default of type (SIMPLE-ARRAY CHARACTER), not
1037 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1038 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1039 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1040 * incompatible change: SB-EXT package no longer contains the
1041 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1042 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1044 * incompatible change: the single-stepper is no longer available
1045 on Alpha, Mips and Sparc platforms.
1046 * minor incompatible change: the direct superclasses of
1047 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1048 not (STANDARD-OBJECT FUNCTION). This makes the
1049 class-precedence-lists of GENERIC-FUNCTION and
1050 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1052 * minor incompatible change: the default stream external format on
1053 non-unicode SBCL is no longer detected from the locale, but is always
1055 * new feature: Add a version of evaluator that uses an interpreter instead
1056 of the compiler. EVAL still uses the compiler by default, to switch it
1057 to use the interpreter, set the value of the variable
1058 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1059 * minor incompatible change: the single-stepper REPL has been merged
1060 with the normal debugger (see the "Stepping" heading of the debugger help
1061 for more details). The debugger command STEP will no longer switch
1062 to the single-stepper REPL.
1063 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1064 for a type now works.
1065 * bug fix: loading of default sysinit file works. (thanks to Leonid
1067 * bug fix: better detection of circularities in the file-compiler.
1068 (reported by Marco Monteiro)
1069 * bug fix: the CL pathname functions now work with files that have
1070 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1071 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1072 systems with Unix98 pty semantics.
1073 * bug fix: ASDF-INSTALL will now work with bsd tar.
1074 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1076 * bug fix: timers expiring in dead threads no longer cause a
1077 type-error (reported by Paul "Nonny Mouse").
1078 * bug fix: thanks to more lightweight single-stepper instrumentation,
1079 code compiled with (DEBUG 3) will compile and execute significantly faster,
1080 and will have more accurate type-inferencing than before
1081 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1082 whose bindings are modified
1083 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1084 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1085 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1086 CL:SOFTWARE-VERSION with proper version
1088 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1089 * feature: implemented the READER-METHOD-CLASS and
1090 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1091 as specified by AMOP.
1092 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1094 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1095 (thanks to Lutz Euler)
1096 * optimization: hashing of general arrays and vectors has been
1097 improved. (reported by Any Fingerhut)
1098 * enhancement: SB-INTROSPECT is now able to find definitions of
1099 profiled functions. (thanks to Troels Henriksen)
1100 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1101 as well, allowing compiler-macros for SETF-functions to expand.
1102 * enhancement: step-instrumentation no longer wraps known
1103 single-value functions with multiple-value context, allowing
1104 better type inference.
1105 * fixed bug #337: use of MAKE-METHOD in method combination now works
1106 even in the presence of user-defined method classes. (reported by
1107 Bruno Haible and Pascal Costanza)
1108 * fixed bug #339(c): if there are applicable methods not part of any
1109 long-form method-combination group, call INVALID-METHOD-ERROR.
1110 (reported by Bruno Haible)
1111 * fixed bug #361: the :FUNCTION initarg in the protocol for
1112 initialization of methods can now be used to override
1113 internally-produced optimized functions. (reported by Bruno
1115 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1116 system-provided lambda expression no longer cause warnings about
1117 unbound #:|pv-table| symbols.
1118 * bug fix: improved the handling of type declarations and the
1119 detection of violations for keyword arguments with non-constant
1121 * bug fix: potentially erronous calls to PATHNAME and
1122 MERGE-PATHNAMES were being flushed in some cases.
1123 (reported by Richard Kreuter)
1124 * bug fix: compiled calls to TYPEP were mishandling obsolete
1125 instances. (reported by James Bielman and Attila Lendvai)
1126 * bug fix: format strings with ~> without matching ~< no longer
1127 trigger an AVER, but signal an understandable error instead.
1128 (reported by Antonio Martinez)
1129 * bug fix: specifying an output-file without a pathname-type for
1130 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1131 of input-file instead of "fasl". (reported by Robert Dodier)
1132 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1133 (reported by James Y Knight).
1134 * bug fix: compiler-macros-function did not consider the environment
1135 argument for shadowing by local functions.
1136 * bug fix: compiler-macros expansion was inhibited by local INLINE
1138 * bug fix: inline expansions of known functions were subject to
1139 step-instrumentation in high debug policies, leading to problems
1140 with type-inference.
1141 * bug fix: compiler failed to differentiate between different CONS
1142 types in some cases.
1143 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1144 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1145 * bug fix: #368: incorrect use of expressed vs. upgraded array
1147 * bug fix: #306a: more precise unions of array types.
1148 * thread-safety improvements:
1149 ** CONDITION-WAIT could return early on Linux, if the thread was
1150 interrupted and subsequently continued with SIGCONT.
1151 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1153 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1154 * added support for the ucs-2 external format. (contributed by Ivan
1156 * minor incompatible change: pretty printing of objects of type
1157 (cons symbol) is, in the default pprint-dispatch-table, now
1158 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1160 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1161 called later in a class's lifetime, possibly as late as when the
1162 first instance of the class is created. Previously,
1163 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1164 class became finalizeable.
1165 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1166 for multibyte external-format streams. (thanks to "vbzoli")
1167 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1168 with :ALLOCATION :CLASS inherited from superclasses of the
1170 * fixed bug: anonymous classes can now be created using the :NAME
1171 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1172 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1173 * fixed bug: core-files saved with :EXECUTABLE T can again be
1174 executed when SBCL_HOME isn't set. (reported by James Knight)
1175 * fixed bug: toplevel LOCALLY forms with declarations could
1176 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1177 * fixed bug: printing from several different threads using different
1178 values of *print-case* could cause invalid output, due to
1179 some internal special variables of the printer not being bound
1180 thread-locally (reported by Max Mikhanosha)
1181 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1182 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1183 (reported by Pascal Costanza)
1184 * fixed bug: FINALIZE-INHERITANCE is called from
1185 REINITIALIZE-INSTANCE on classes when the class has previously
1186 been finalized, as required by AMOP.
1187 * minor code generation optimizations:
1188 ** better register allocation in CLOS dispatching functions
1189 ** overflow detection when coercing signed bytes to fixnums on x86-64
1190 ** is now implemented with one IMUL instruction instead of three shifts
1191 ** more efficient bit-vector access on x86 and x86-64
1192 ** more efficient access to raw structure slots on x86 and x86-64
1193 * fixed some bugs revealed by Paul Dietz' test suite:
1194 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1195 return its argument.
1197 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1198 * feature: thread support on Solaris/x86, and experimental thread support
1200 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1202 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1203 default method for SLOT-UNBOUND.
1204 * minor incompatible change: prevent the user from specializing the
1205 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1206 somewhat counter to the intent of the protocol, I (CSR) think, and
1207 additionally it just doesn't work in SBCL as currently
1208 implemented, thanks to optimizations (that are always valid for
1209 the other three SLOT-VALUEish functions, but not for the setter).
1210 * minor incompatible change: the :SB-LDB feature is now enabled by
1211 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1212 the low-level debugger.
1213 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1214 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1215 down to an SB-SYS:FD-STREAM, allowing direct communication in
1216 more cases. Temporary files and pipes are still used as a fallback
1218 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1219 on the non-reentrant C functions localtime(3) and gmtime(3).
1220 * bug fix: global optimization policy was not visible in LOCALLY and
1222 * bug fix: class objects can be used as specializers in methods.
1223 (reported by Pascal Costanza)
1224 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1225 with a type error. (reported by blitz_ on #lisp)
1226 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1227 failed with a type error. (reported by Pascal Bourguignon)
1228 * bug fix: merging pathnames against defaults with :DIRECTORY
1229 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1230 (reported by James Y Knight)
1231 * bug fix: saving large (>2GB) cores on x86-64 now works
1232 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1233 constant index and a (simple-array (signed-byte 32)) array
1234 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1235 error (patch by Robert J. Macomber)
1236 * feature: TIME now displays the amount of run-time spent in GC
1237 * bug fix: The debugger now does a better job of respecting
1238 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1239 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1240 workaround for bug 403.)
1241 * bug fix: floating point exception handling now works on FreeBSD
1242 (thanks to NIIMI Satoshi)
1243 * fixed some bugs revealed by Paul Dietz' test suite:
1244 ** MISC.641: LET-conversion were not supposed to work in late
1246 * improvements to the Win32/x86 port:
1247 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1248 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1250 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1251 * new feature: source path information is generated for macro-expansion
1252 errors for use in IDE's like Slime (thanks to Helmut Eller)
1253 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1254 * bug fix: compiler does not loop forever on an invalid type in
1256 * improvement: compilation of most CLOS applications is significantly
1258 * optimization: added a limited bytecode compiler for simple toplevel
1259 forms, speeding up compilation and FASL loading
1260 * bug fix: the statistical profiler now properly distinguishes anonymous
1263 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1264 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1265 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1266 into subclasses of the finalized class. Now user calls to
1267 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1268 system return before any subclasses are finalized.
1269 * minor incompatible change: The reader no longer ignores errors
1270 regarding non-existent packages in #+ and #- feature tests.
1271 * new feature: command line options --no-sysinit, --no-userinit to
1272 inhibit loading the corresponding init files
1273 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1274 for sending data through UDP sockets (thanks to François-René Rideau)
1275 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1276 error is signalled instead (thanks to François-René Rideau)
1277 * minor incompatible change: Error signalling behaviour of lexical
1278 operations violating package locks has changed slightly. Refer to
1279 documentation on package locks for details.
1280 * enhancement: EVAL can process IF-expressions without resorting to the
1282 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1283 constant-folded properly due to missing out-of-line functions.
1284 (reported by Mika Pihlajamäki)
1285 * bug fix: LISTEN sometimes returned T even in cases where no data was
1286 immediately available from the stream
1287 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1288 were reversed. (reported by Levente Mészáros)
1289 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1290 when given a vector displaced to an adjustable array. (reported
1292 * bug fix: derivation of float boundaries from numbers outside the
1293 appropriate float range (reported by John Wiseman)
1294 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1296 * bug fix: precomputing cache entries for generic functions with
1297 some subclasses of specializers as yet invalid does not attempt to
1298 fill a cache line with a negative offset. (reported by Levente
1300 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1301 allow condition class objects as arguments to DOCUMENTATION and
1302 (SETF DOCUMENTATION); only find and set documentation for
1303 structure names for the STRUCTURE doc-type. (suggested by Gary
1305 * improvements to the Win32/x86 port:
1306 ** (user-homedir-pathname) and default initialization file
1307 locations now know about the user's "Documents and Settings"
1308 directory (thanks to Yaroslav Kavenchuk)
1309 ** run-program is implemented (thanks to Mike Thomas)
1310 ** sockets support (thanks to Timothy Ritchey)
1311 ** better backtrace support (thanks to Alastair Bridgewater)
1312 ** sb-grovel supported
1313 ** asdf-install and sb-posix work somewhat
1314 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1315 * improvements to the Solaris/x86 port:
1316 ** works on Solaris 11/Solaris Express
1317 ** floating-point exception handling support
1318 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1319 * fixed some bugs revealed by Paul Dietz' test suite:
1320 ** REMOVE-METHOD returns its generic function argument even when
1321 the method is not one of the generic functions' methods.
1322 ** objects declared as MEMBER types can be admissible arguments to
1323 structure accessors.
1324 ** printing characters should simply be printed by the FORMAT ~:C
1326 ** compiler failure when compiling functions with hairy constant
1327 defaults for optional parameters.
1328 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1329 function, which is already optimized.
1331 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1332 * new platform: experimental support for SBCL x86/Darwin, including
1333 MacOS X 10.4.5 on Intel.
1334 * new feature: Unicode character names are now known to the system
1335 (through CHAR-NAME and NAME-CHAR).
1336 * new feature: the filesystem location of SBCL's core file is
1337 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1338 * minor incompatible change: the contrib modules SB-POSIX and
1339 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1340 this change is to make it easier to distribute
1341 location-independent binaries.
1342 * bug fix: as implied by AMOP, standardized classes no longer have
1343 slots named by external symbols of public packages. (reported by
1345 * optimization: calling functions via constant symbols -- as in
1346 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1347 via the function object as in (FUNCALL #'FOO).
1348 * optimization: on x86 and x86-64, the calling convention for the
1349 case of dealing with an unknown number of values has been altered
1350 to be friendlier to the prediction heuristics implemented,
1351 particularly with reference to CALL and RET pairing. (thanks to
1352 Alastair Bridgewater)
1353 * optimization: on x86, the code for access to thread-local symbol
1354 values and binding/unbinding of thread-local symbols is smaller.
1355 (thanks to Alastair Bridgewater)
1356 * enhancement: CONSTANTP is now able to determine constantness of
1357 more complex forms, including calls to constant-foldable standardized
1358 functions and some special forms beyond QUOTE.
1359 * fixed bug: occasional GC crashes on Solaris/x86
1360 * optimization: x86-64 supports stack allocation of results of simple
1361 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1362 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1363 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1364 (thanks to James Knight)
1365 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1366 by the standard (thanks to Stephen Compall)
1368 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1369 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1370 be used for bundling the runtime and the core file into one
1371 executable binary. This feature is not currently supported on all SBCL
1372 platforms. (thanks to James Bielman and NIIMI Satoshi)
1373 * new feature: a generational or ephemeral garbage collector is now
1374 the default on the PowerPC platform (both Linux and Darwin). The
1375 old Cheney (stop and copy) collector is a build-time option.
1376 (thanks to Cyrus Harmon, after Raymond Toy)
1377 * minor incompatible change: the method by which SBCL finds its
1378 contributed modules has changed; it no longer relies on symbolic
1379 links from an $SBCL_HOME/systems directory, but searches directly
1380 in the subdirectories of $SBCL_HOME.
1381 * enhancement: the dynamic heap size on the Linux/PPC platform is
1382 markedly larger, even using the older Cheney garbage collector.
1383 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1384 certain complicated string types. (reported by Gary King)
1385 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1386 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1387 * fixed bug: DOCUMENTATION on structures no longer signals an
1388 error if no structure type of the right name exists. (reported by
1390 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1391 applicable non-standard primary or :AROUND method on
1392 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1393 no longer cause unbound variable errors. (reported by Kevin Reid)
1394 * fixed bug: metacircle resolution in cases where methods have slots
1395 added before the slots from STANDARD-METHOD. (reported by Jean
1397 * fixed bug: the Power PC assembly code for calling into lisp
1398 sometimes computed its return address wrongly (depending on the
1399 15th bit of the address, fixed at link time). This used to
1400 manifest itself in a segmentation violation while building PCL.
1401 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1402 many others over the years)
1403 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1404 the stack pointer (treated as a signed integer) is negative.
1405 (thanks to Peter van Eynde)
1407 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1408 * new platform: experimental support for the Windows operating
1409 system has been added. (thanks to Alastair Bridgewater)
1410 * fixed several bugs in and robustified the PPC FFI (including
1411 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1412 * bug fix: allow non-simple string symbol names (reported by Paul
1414 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1416 * bug fix: saving a core corrupted callbacks on x86/x86-64
1417 * bug fix: closed a loophole in metacircularity detection and
1418 grounding in the PCL implementation of CLOS.
1419 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1420 (reported by tomppa on #lisp)
1421 * bug fix: clear the direction flag on Lisp -> C transitions, as
1422 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1423 (reported by Andrej Grozin and Hendrik Maryns)
1424 * optimization: major improvements to GC efficiency on GENCGC platforms
1425 * optimization: faster implementation of EQUAL
1426 * optimization: emit more efficient opcodes for some common
1427 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1428 * optimization: several other minor code-generation improvements on x86-64
1429 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1431 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1432 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1433 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1434 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1435 by ANSI as a generic function, and for consistency (SETF
1436 GENERIC-FUNCTION-NAME) is treated likewise.
1437 * fixed bug #233.b: make constraint propagation notice when a variable
1438 value is changed after it is referenced but before it is used
1439 * fixed bug #296: no more arbitrary behaviour from filenames with
1440 odd characters as --load arguments. (reported by Adam Warner)
1441 * fixed bug #390: :CHARACTER-SET pathname components now work as
1442 expected. (reported by Tim Daly Jr)
1443 * fixed bug #391: complicated :TYPE intersections in slot
1444 definitions no longer cause an error in PCL internals.
1445 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1446 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1447 returning the number of octets which would be written to the
1448 file-stream. (thanks to Robert J. Macomber)
1449 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1450 arguments to the internal stream functions. (thanks to David
1452 * bug fix: stack exhaustion is now handled on the x86/SunOS
1453 platform. (thanks to Daisuke Homma)
1454 * bug fix: more accurate ROOM results on GENCGC platforms
1455 * optimization: improved type inference for arithmetic-for
1456 index variables in LOOP
1457 * optimization: faster floating-point SQRT on x86-64
1458 * fixed some bugs revealed by Paul Dietz' test suite:
1459 ** DOCUMENTATION returns NIL instead of "" for method combinations
1460 that don't have a docstring
1462 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1463 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1464 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1465 therefore are not customizeable by user code (as seems to be at
1466 least permitted and maybe required by AMOP). As a consolation,
1467 however, the SBCL implementation of these functions now calls
1468 REINITIALIZE-INSTANCE as specified by AMOP.
1469 * bug fix: slot-definition documentation is propagated as per ANSI
1470 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1471 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1472 argument, as do eslotd initialization methods. (from Pascal
1473 Costanza's "Closer" project)
1474 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1475 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1477 * bug fix: it is now possible to have more than one subclass of
1478 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1479 (reported by Bruno Haible, Pascal Costanza and others)
1480 * bug fix: the dependent update protocol now works for generic
1481 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1482 and Pascal Costanza)
1483 * bug fix: condition-class instances corresponding to
1484 DEFINE-CONDITION forms are now created eagerly. (reported by
1485 Kalle Olavi Niemitalo on comp.lang.lisp)
1486 * bug fix: floating point printing is more accurate in some
1487 circumstances. (thanks to Simon Alexander)
1488 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1489 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1490 * bug fix: callbacks on OS X now preserve stack-alignment.
1491 (thanks to Cyrus Harmon)
1492 * enhancement: the x86-64 disassembler is much better at
1493 disassembling SSE instructions. (thanks to Lutz Euler)
1494 * enhancement: CHECK-TYPE on a variable now allows type-inference
1495 (thanks to Vincent Arkesteijn)
1496 * optimization: improved performance of EUC-JP external format.
1497 (thanks to NIIMI Satoshi)
1498 * optimization: performance improvements to IO on file streams of
1499 :ELEMENT-TYPE CHARACTER
1500 * optimization: much faster memory allocation on x86-64
1501 * optimization: faster garbage collections (latency and throughput)
1503 * optimization: faster bignum subtraction and division on x86 and x86-64
1504 (thanks to Lutz Euler)
1505 * optimization: more accurate type-inference for loops that use a
1506 floating point index variable or a negative step.
1508 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1509 * bug fix: add a workaround to SBCL looping infinitely at startup on
1510 Linux kernels with apparently buggy implementations of personality().
1511 (thanks to Svein Ove Aas)
1512 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1513 (thanks to David Lichteblau)
1514 * bug fix: local bindings shadow global symbol macros for
1515 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1516 * optimization: non-open coded uses of numeric comparison operators
1517 (e.g. >) no longer cons when called with more than one parameter
1518 on platforms supporting dynamic-extent allocation.
1519 * enhancement: saving cores with foreign code loaded is now supported
1520 on MIPS/Linux in addition to the previously supported platforms.
1521 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1522 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1523 * bug fix: division by zero in sb-sprof when no samples were collected
1524 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1525 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1526 (thanks to Alexander Kjeldaas)
1527 * new feature: ignoring the return values of destructive functions
1528 like NREVERSE signals a compile-time style-warning.
1529 (thanks to Kevin Reid)
1530 * new feature: the alignment of alien structure fields can be
1531 explicitly specified. (thanks to Cyrus Harmon)
1532 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1533 and dump core on SIGQUIT
1535 ** incompatible change: threads do not inherit values of specials
1536 from their parents (see manual)
1537 ** bug fix: threads stacks belonging to dead threads are freed by the
1538 next exiting thread, no need to gc to collect thread stacks anymore
1539 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1540 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1541 ** bug fix: dynamic variable and thread start related gc lossage
1542 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1544 * fixed some bugs revealed by Paul Dietz' test suite:
1545 ** SUBTYPEP is slightly more accurate on heinously complicated
1546 CONS types where some of the members have uncertain (in the
1547 NIL, NIL sense) type relationships to each other.
1549 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1550 no longer purified unless :PURIFY T is explicitly specified.
1551 ** Non-purified cores are significantly smaller than before
1553 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1554 * new feature: timers based on Zach Beane's excellent timer package
1555 * added support for the following external formats: koi8-u,
1556 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1557 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1558 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1559 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1560 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1561 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1562 * incompatible change: a threaded SBCL will no longer revert to
1563 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1564 * bug fix: interrupts are disabled until startup is complete; no
1565 more sigsegvs when receiving a signal to soon
1566 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1568 * bug fix: add a workaround for the memory randomization features in
1569 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1570 workaround will only be in effect on systems with the proc filesystem
1572 * bug fix: printing objects of type HASH-TABLE signals a
1573 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1575 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1576 have been running for over 50 days. (reported by Gilbert Baumann)
1577 * bug fix: the logic for getting names of functions gets less
1578 confused when confronded with alternate-metaclass
1579 funcallable-instances. (reported by Cyrus Harmon)
1580 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1581 consistent, even on internal alternate-metaclass objects.
1582 * bug fix: flush closure information collected by physical
1583 environment analysis prepass before the main pass. (bug reported
1585 * bug fix: compiler pack phase does not modify a hashtable, which is
1586 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1587 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1588 may be expanded. (reported by Alexander <malishev> on c.l.l)
1589 * bug fix: no more style-warnings when compiling code using LAST
1590 under high-SPEED low-SPACE settings. (reported by David Wallin
1592 * fixed some incompatibilities between SBCL's MOP and the MOP
1594 ** the METAOBJECT class is now implemented;
1595 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1596 STANDARD-OBJECT, as required;
1597 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1598 now compatible (as required by VALIDATE-SUPERCLASS); there
1599 remains a consistency requirement over the presence or absence
1600 of the FUNCTION class in the superclass list of finalized
1601 classes; see the manual for more details;
1602 ** the :AROUND method for COMPUTE-SLOTS on
1603 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1604 requested slot ordering.
1606 ** bug fix: parent thread now can be gc'ed even with a live
1608 ** bug fix: binding a special with PROGV to no value is not
1609 the same as that symbol not having been bound (thanks to
1611 ** bug fix: binding specials is thread safe (thanks to
1613 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1614 and SB-SPROF do not die with 'no handler for signal XX in
1615 interrupt_handle_now(..)' anymore
1616 ** bug fix: WITH-TIMEOUT works with multiple running threads
1617 * fixed some bugs revealed by Paul Dietz' test suite:
1618 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1619 the :method-class keyword argument.
1621 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1622 * new port: the Solaris operating system on x86 processors is now
1623 mostly supported, though some rough edges in the environment
1624 remain. (thanks to Daisuke Homma)
1625 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1626 space for its heap. (thanks to Thiemo Seufer)
1627 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1628 closures. (thanks to Thiemo Seufer)
1629 * minor incompatible change: eof selects abort in the debugger.
1630 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1631 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1633 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1634 deprecated, and will go away in a future revision of SBCL.
1635 * minor incompatible change: GC-ON and GC-OFF are no longer
1636 implemented with a counter, it does not matter how many times gc
1637 is switched on or off
1638 * bug fix: discriminating functions for generic function classes
1639 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1640 make invalid assumptions about method precedence order. (reported
1642 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1643 platforms. (thanks to Thiemo Seufer)
1644 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1645 * bug fix: correct pathname printing with printer escaping is on.
1646 (thanks to Kevin Reid)
1647 * bug fix: complex VOP definitions in "user-space" no longer trigger
1648 package locks. (reported by Zach Beane)
1649 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1650 for funcallable-instance functions, and is no different from
1652 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1653 characters in the current readtable. (reported by Nicholas Neuss)
1654 * bug fix: SUBTYPEP on various CONS types returns more a more
1655 accurate acknowledgment of its certainty.
1656 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1657 lists in some cases. This partially fixes bug 384.
1658 * flush all standard streams before prompting in the REPL and the
1660 * bug fix: signal handling and triggering gc do not conflict
1661 directly anymore, in particular a high frequency sb-sprof does
1662 not prevent gc from running
1663 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1664 approximation for timezone and DST information between the
1665 universal time epoch and the smallest negative 32-bit time_t.
1666 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1667 year 1899 so long as the encoded time is non-negative.
1668 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1669 the correct answer for non-constant rotate amounts when performing
1670 an inline 32-bit rotation.
1672 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1673 there is only one thread in the session
1674 ** bug fix: memory leak for streams created in one thread and
1675 written to in another
1676 ** bug fix: lockup when compiled with gcc4
1677 ** bug fix: race that allows the gc to be triggered when gc is
1679 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1680 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1682 ** bug fix: finished threads are gc'ed properly
1683 * fixed some bugs revealed by Paul Dietz' test suite:
1684 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1685 has arguments with a different set of applicable methods from
1686 the orignal arguments.
1687 ** The type error thrown by MAP now has a correct expected-type
1689 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1690 name a compiled function.
1691 ** Three MISC tests where a large bignum was improperly coerced to
1692 a float that couldn't represent that bignum during type
1693 derivation were fixed.
1694 ** SUBTYPEP can now handle types involving the negation of a
1695 list-form FUNCTION type.
1696 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1697 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1698 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1700 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1701 * New feature: Experimental support for bivalent streams: streams
1702 opened with :element-type :default now allow character and binary
1703 (unsigned-byte 8) I/O
1704 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1705 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1707 * bug fix: no more highly sporadic "couldn't check whether ~S is
1708 readable" when reading a stream and an interrupt hits in the middle
1709 of a select system call
1710 * compiler better recognizes complex arrays (reported by Eduardo
1712 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1713 for variables on SBCL built with linkage-tables. (reported by Luis
1715 * various error reporting improvements.
1716 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1717 (Thanks to Thiemo Seufer)
1718 * bug fix: nested reader invokations work correctly
1719 * bug fix: it is possible to have simultaneous references to foreign
1720 code and foreign data with the same name.
1722 ** added x86-64 support
1723 ** incompatible change: the threading api now works with thread
1724 objects instead of thread ids
1725 ** bug fix: threads are protected from signals and interruption when
1726 starting up or going down
1727 ** bug fix: a race where an exiting thread could lose its stack to gc
1728 ** bug fix: don't halt on infinite error in threads if possible
1729 ** fixed numerous gc deadlocks introduced in the pthread merge
1730 ** bug fix: fixed thread safety issues in read and print
1731 ** bug fix: debugger doesn't hang on session lock if interrupted at
1732 an inappropriate moment
1733 ** bug fix: run-program is now thread safe(r)
1734 ** bug fix: inner with-recursive-lock no longer releases the mutex
1735 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1736 * fixed some bugs revealed by Paul Dietz' test suite:
1737 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1738 EXPECTED-TYPE slots filled.
1739 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1741 ** MAKE-CONDITION accepts classes as type-designators.
1742 ** COMPILE may never return NIL.
1743 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1744 range before calling Unix time functions
1746 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1747 * numerous signal handling fixes to increase stability
1748 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1749 * minor incompatible change: we now correctly canonize default
1750 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1751 as per the MOP, rather than the historical (INITARG INITFUNCTION
1752 INITFORM). (reported by Bruno Haible)
1753 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1754 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1755 for more information.
1756 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1757 pathname is a directory pathname.
1758 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1759 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1761 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1762 :METACLASS argument in addition to a class name. (reported by
1763 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1764 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1765 (reported by Bruno Haible; patch from Gerd Moellmann)
1766 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1768 * bug fix: more cleanups to the floating point exception handling on
1769 x86-64 (thanks to James Knight)
1770 * bug fix: the compiler does not try to constant fold calls of
1771 COERCE and BIT-* functions when they return freshly constructed
1772 objects. (reported by Nikodemus Siivola and Paul Dietz)
1773 * optimization: improved the MIPS versions of generic (in the
1774 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1775 * optimization: direct conversion of (unsigned-byte 32) to floats on
1776 the PowerPC platform.
1777 * optimization: structure instances with raw slots now use less
1778 memory, and probably show better memory locality. (thanks to
1780 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1781 are treated as requests for stack allocation on the x86-64,
1782 Alpha-32, PPC and SPARC platforms.
1783 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1784 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1785 (thanks to Tony Martinez)
1787 ** gcing a dead thread can no longer lead to lockups
1788 ** threads block signals until they are set up properly
1789 ** errno is no longer shared by threads
1790 ** interrupt-thread restores the eflags register on x86
1791 ** fixed some lockups due to gc/thread interaction
1792 * fixed some bugs revealed by Paul Dietz' test suite:
1793 ** invalid dotted lists no longer raise a read error when
1794 *READ-SUPPRESS* is T
1795 ** signal an error if a symbol that names a declaration is used
1796 as the name of a type, or vice versa
1797 ** allow using the (declare (typespec var*)) abbreviation for
1798 (declare (type typespec var*)) with all type specifiers
1799 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1800 ** always return NIL from PPRINT-POP when OBJECT is NIL
1801 ** don't signal errors when pretty-printing malformed LABELS,
1802 FLET or MACROLET forms
1803 ** declarations in a DOLIST body are also in scope for the
1805 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1807 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1810 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1811 * fixed cross-compiler leakages that prevented building a 32-bit
1812 target with a 64-bit host compiler.
1813 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1814 opened with :IF-EXISTS :OVERWRITE.
1815 * fixed bug 281: error for an invalid qualifier in a short-form method
1816 combination method is not signalled until the faulty method is called.
1817 * bug fix: iteration variable type inferrer failed to deal with open
1818 intervals. (reported by Alan Shields)
1819 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1820 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1821 or more runtime options were provided to the sbcl binary.
1822 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1823 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1824 * optimization: there's now a fast-path for fixnum arguments in the
1825 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1826 * optimization: the code generated on x86-64 is more compact thanks
1827 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1828 * bug fix: floating-point exception handling now partly works on
1829 x86-64. (Thanks to James Knight)
1830 * improvement to the MIPS backend from Thiemo Seufer: C-style
1831 64-bit long long arguments and return values to alien functions
1833 * fixed some bugs revealed by Paul Dietz' test suite:
1834 ** the type-error signalled from WARN has a filled-in DATUM slot.
1835 ** the type-error required when a stream is not associated with
1836 a file has the stream as its datum.
1837 ** type-errors on single-floats on x86-64 no longer have
1838 :INVALID-OBJECT as the datum
1839 ** the type-errors signalled for invalid function names now have
1840 a correct expected type
1841 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1842 for structures defined with a :TYPE. Documentation strings for
1843 typed structures are no longer immediately discarded
1844 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1845 broadcast streams and synonym streams. FILE-LENGTH now also works
1846 on broadcast streams.
1848 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1849 * incompatible change: the --noprogrammer option, deprecated since
1850 version 0.7.5, has been removed. Please use the equivalent
1851 --disable-debugger option instead.
1852 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1854 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1855 inoperational for a while now) has been completely removed.
1856 * null lexical environments are now printed as #<NULL-LEXENV>,
1857 significantly reducing the amount of clutter in typical backtraces.
1858 * documentation on weak pointers, finalization, and after GC hooks
1859 has been added to the manual.
1860 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1861 as other specialized array types, is much faster. SUBSEQ and
1862 COPY-SEQ on such arrays have also been sped up.
1863 * optimization: EQL is now more efficient when at least other argument
1864 is known to be of type (OR FIXNUM (NOT NUMBER)).
1865 * fixed bug: the runtime is now less vulnerable to changes in the
1866 size of the SBCL object on OS X, and virtual memory is reserved for
1867 all spaces that need to be at a fixed address.
1868 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1869 * fixed bug: finalizers and after GC hooks that cause consing are now
1871 * fixed bug: compiler error messages and summaries are now printed to
1872 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1873 * fixed inference of the upper bound of an iteration variable.
1874 (reported by Rajat Datta).
1875 * fixed bug 211e: calling local functions with duplicated constant
1876 keyword argument no longer causes a bogus style warning about an
1878 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1879 ftype declaration to be disregarded. (reported by Dave Roberts)
1880 * fixed bug 373: caused by erronous compilation of references to alien
1881 variables in the runtime on ppc/darwin.
1882 * fixed bug 376: CONJUGATE type deriver.
1883 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1884 (reported by Baughn on #lisp)
1885 * a cross-compiler bug on non-x86 platforms has been identified and
1886 fixed. (thanks to Bruno Haible)
1887 * improvements to the MIPS runtime code for increased stability.
1888 (thanks to Thiemo Seufer)
1889 * increased the maximimum compact environment size to allow
1890 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1891 * partial workaround for bug 135: don't name the function we're
1892 calling for hairy cases of EVAL, so as not to accumulate one environment
1893 entry per call to EVAL. (reported by Kevin Reid)
1894 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1895 * optimization: type testing for non-vector arrays should be faster.
1896 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1898 * bug fix: setting 31st element of a bit vector to zero did not work
1900 * bug fix: redefining a class definition which failed due to a
1901 previous accessor / function clash now works (but see BUGS entry
1902 #380 for more problems in this area). (thanks to Zach Beane)
1903 * the long form of DEFINE-METHOD-COMBINATION disables method group
1904 checking when given a single method group with pattern *. (thanks
1906 * on x86 compiler supports stack allocation of results of simple
1907 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1908 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1909 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1910 * fixed some bugs related to Unicode integration:
1911 ** the restarts for recovering from input and output encoding
1912 errors only appear when there is in fact such an error to
1914 * fixed some bugs revealed by Paul Dietz' test suite:
1915 ** MISC.549 and similar: late transformation of unsafe type
1916 assertions into derived types caused unexpected code
1918 ** SCALE-FLOAT type deriver is less wrong.
1919 ** type derivers for EXP, LOG and similar functions compute result
1920 types for complex arguments better.
1921 ** (MISC.563) CONJUGATE type deriver works for very restricted
1923 ** out-of-line type testers for character strings are available.
1924 ** EQUAL compiler transform understands specialness of objects
1926 ** accessing double-floats stored on the stack now works on x86-64.
1927 ** debugger internals could sometimes create invalid lispobjs,
1928 resulting in GC crashes.
1929 ** MISC.548: type check weakening can convert required type into
1931 ** initialization forms for bindings are not in scope of free special
1934 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1935 * incompatible change: thread support for non-NPTL systems has
1936 been removed - locking is buggy and unreliable. A threaded
1937 SBCL build will now warn at startup and refuse to create
1938 new threads, unless futex support is detected in the kernel
1939 * incompatible change: the top level REPL now has only an ABORT
1940 restart associated with it, not TOPLEVEL and ABORT as it used to.
1941 TOP and TOPLEVEL are now available as debugger commands for
1942 returning to the top level.
1943 * incompatible change: forms evaluated in the REPL now use the
1944 global optimization policy.
1945 * incompatible change: user- and system-initialization files are
1946 no longer processed with LOAD, but by READ and EVAL; hence the
1947 global optimization policy, startup package, readtable, etc,
1949 * The .fasl file format number has been incremented because of
1950 various incompatible changes.
1951 * internal entry point details and argument counts no longer appear
1952 in backtraces unless explicitly requested by setting
1953 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1954 * built-in and standard functions no longer have names like "top
1955 level local call to FOO".
1956 * fixed bug 32: functions defined in non-null lexical environments
1957 now have more legible printed representation
1958 * fixed bug 33: functions defined in non-null lexical environemnts
1959 are now more amenable to inspection by INSPECT.
1960 * workaround for bug 354: XEPs no longer appear in backtraces unless
1961 explicitly requested.
1962 * fixed bug: receiving the signal which results from attempting to
1963 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1964 SIGBUS on other *BSDs) on architectures where the C stack is also
1965 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1966 to debugger confusion or wild instability. (reported by Cheuksan
1968 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1969 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1970 (reported by Lutz Euler)
1971 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1972 compiled code. (reported by Paul Dietz)
1973 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1974 specialized parameter to a method to something that is not TYPEP
1975 the specializer is now possible.
1976 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1977 face of package deletion.
1978 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1979 pathname. (reported by David Tolpin on c.l.l)
1980 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1981 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1982 STRING-STREAM and FILE-STREAM, respectively.
1983 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1984 than previously; in addition, its test suite is now run on build.
1985 (thanks to Luke Gorrie)
1986 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1987 * optimization: added a immediate representation for single-floats
1989 * fixed some bugs revealed by Paul Dietz' test suite:
1990 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1991 ** attempting to create a package with a colliding nickname causes
1992 correctable errors to be signalled.
1993 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1994 ** several x86-64 backend bugs related to sign-extension of immediate
1997 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1998 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1999 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2001 * fixed loading of multiply forward-referenced layouts.
2002 (thanks to Cheuksan Wang)
2003 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2004 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2005 (see COMPILE-FILE documentation for details of :PRINT option)
2006 * fixed bugs 19 and 317: fixed-format floating point printing is
2007 more accurate. This also fixes a bug reported by Adam Warner
2008 related to the ~@F format directive.
2009 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2011 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2012 dispatch table if the from-char is a dispatch macro character.
2013 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2014 by the wordsize no longer ignore the last word. (reported by Lutz
2016 * fixed bug in type checking of dynamic-extent variables. (reported
2018 * optimization: sequence traversal functions use their freedom to
2019 coerce function designators to functions.
2020 * optimization: code with many calls to CLOS methods specialized on
2021 CLOS classes has had redundant type checks removed.
2022 * optimization: added declarations to speed up operations that access
2023 the internal character database (for example STRING-UPCASE)
2024 * optimization: comparison operations between floats and sufficiently small
2025 fixnums no longer create extra rationals
2026 * fixed some bugs related to Unicode integration:
2027 ** portions of multibyte characters at the end of buffers for
2028 character-based file input are correctly transferred to the
2029 start of the buffer at the next read.
2030 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2031 passing it through to OPEN.
2032 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2033 argument given to internal calls to OPEN.
2034 ** the built-in comment readers (introduced by character sequences
2035 ";" and "#|") are more forgiving to encoding errors; they will
2036 STYLE-WARN and then attempt to resync the stream at a character
2037 boundary. (thanks to Teemu Kalvas)
2038 * fixed some bugs in the x86-64 port:
2039 ** Negative short int return values from c-calls are sign-extended
2041 ** The stack is aligned to 16-bytes for c-calls, as required by
2042 the ABI. (thanks to Cheuksan Wang)
2043 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2044 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2045 for enums. (thanks to Vincent Arkesteijn)
2046 ** Multiple small optimizations and bugfixes for floating point
2048 * fixed some bugs revealed by Paul Dietz' test suite:
2049 ** Space, Tab, Linefeed, Return and Page have the invalid
2050 secondary constituent character trait.
2051 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2053 ** WITH-INPUT-FROM-STRING should only update the index place on
2055 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2056 works more reliably.
2057 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2058 with one-dimensional arrays with fill pointers.
2059 ** TYPE-OF failed on a complex with an integer realpart and a
2061 ** compiler failure during type inference for the code of form
2062 (IF (EQL X (THE ...)) ...) (MISC.535).
2064 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2065 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2066 platform. The port supports 61-bit fixnums, large memory spaces
2067 and reloading shared object files.
2068 * enhancement: saving cores with foreign code loaded is now
2069 supported on ppc/Darwin in addition to the previously supported
2071 * enhancement: the statistical profiler now walks deeper into the
2072 call stack for more meaningful call-graphs and accrued time
2073 reports (x86/x86-64 only). It also now reports time spent in
2075 * enhancement: it is now possible to trace most individual methods
2076 of a generic function in addition to tracing the generic function
2078 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2080 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2081 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2082 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2083 produces an error. (thanks to Vincent Arkesteijn)
2084 * bug fix: NAMESTRING on pathnames with :WILD components in their
2085 directories works correctly. (thanks to Artem V. Andreev)
2086 * fixed bug 125: compiler preserves identity of closures. (reported
2088 * bug fixed: functions with &REST arguments sometimes failed with
2089 "Undefined function" when compiled with (DEBUG 3). (reported by
2091 * bug fix: overflow during compiling of setting element of a bit
2092 vector with constant index and value. (reported by Timmy Douglas)
2093 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2094 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2095 * on x86 compiler partially supports stack allocation of dynamic-extent
2097 * GO and RETURN-FROM do not check the extent of their exit points
2098 when compiled with SAFETY 0.
2099 * fixed some bugs related to Unicode integration:
2100 ** encoding and decoding errors are now much more robustly
2101 handled; it should now be possible to recover even from invalid
2102 input or output to the terminal. (thanks to Teemu Kalvas)
2103 ** provided a first cut at implementing STRING-TO-OCTETS and
2104 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2105 ** altered the SB-MD5 contributed module slightly, changing the
2106 interface just enough for it to be supportable for builds where
2107 lisp characters are not eight bits.
2108 * fixed some bugs revealed by Paul Dietz' test suite:
2109 ** the FORMATTER-generated functions for ~V[ conditionals require
2110 the correct number of arguments.
2111 ** READ-FROM-STRING returns the mandated second value when applied
2112 to displaced strings.
2113 ** the #\Rubout and #\Backspace characters are treated as invalid
2114 constituent characters by the tokenizer.
2116 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2117 * new feature: reloading changed shared object files with
2118 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2119 * new feature: references to foreign variables and functions
2120 can now be compiled and loaded before the corresponding shared
2121 object file is loaded, as long as the foreign definitions are
2122 available at runtime.
2123 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2124 supported. (thanks to Dan Debertin)
2125 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2126 just keywords. (thanks to Vincent Arkesteijn)
2127 * fixed bug #331: structure-class instances corresponding to
2128 DEFSTRUCT forms are now created eagerly.
2129 * fixed bug #345: backtraces from calls to undefined functions work
2130 on x86 as well. Related bug #61 is now also partially fixed on x86
2131 (backtraces from throws to unknown catch tags.)
2132 * bug fix: lambda-list parsing is now stricter vrt. order and number
2133 of lambda-list keywords.
2134 * bug fix: as specified by AMOP, an error is signalled if a
2135 class-option appears multiple times in a DEFCLASS form. (reported
2137 * bug fix: RANDOM can be compiled when the compiler derives the type
2138 of its numeric argument as a disjoint set of small integers.
2139 (reported by Paul Dietz)
2140 * bug fix: starting a core saved with shared objects loaded when
2141 those objects are not available no longer causes threaded SBCL to
2142 hang. (reported by Sean Ross)
2143 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2145 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2146 argument, which must always be NIL. (reported by Kalle Niemitalo)
2147 * bug fix: printing 1.0d+23 no longer results in an error.
2148 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2149 * bug fix: structure slot setters preserve evaluation order. (thanks
2151 * fixed some bugs related to Unicode integration:
2152 ** RUN-PROGRAM can allow its child to take input from a Lisp
2153 stream. (reported by Stefan Scholl)
2154 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2155 locales. (reported by Ken Causey)
2156 * fixed some bugs revealed by Paul Dietz' test suite:
2157 ** INCF, DECF and REMF evaluate their place form as specified in
2159 ** FORMATTER expands ~{ ~} iteration directives with V or #
2160 parameters correctly.
2161 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2162 consequent uses no arguments correctly.
2163 ** the system has a partial understanding of the (COMPLEX RATIO)
2165 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2168 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2169 * new feature: a build-time option (controlled by the :SB-UNICODE
2170 keyword feature, enabled by default) for building the system with
2171 support for the entire 21-bit character space defined by the
2173 * new feature: the system now has rudimentary external-format
2174 support; the primary user-visible change at this time is that
2175 characters with the high bit set (such as lower-case-e-acute) will
2176 print correctly to a terminal in a UTF-8 environment.
2177 * minor incompatible change: BASE-CHAR no longer names a class;
2178 however, CHARACTER continues to do so, as required by ANSI.
2179 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2180 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2181 has been moved to the SB-EXT package (temporarily re-exported from
2183 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2184 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2186 * fixed bug #351: better error-handlind and reporting for malformed
2188 * fixed bug #350: bignum-printing is now more memory-efficient,
2189 allowing printing of very large bignums, eg. (expt 2 10000000).
2190 (reported by Bruno Haible)
2191 * fixed bug #302: better primitive-type selection for intersection
2193 * fixed bug #308: non-graphic characters now all have names, as
2194 required. (reported by Bruno Haible)
2195 * bug fix: redefining a class with different superclasses now correctly
2196 removes it from the direct-subclasses of its previous superclasses.
2197 (reported by David Morse)
2198 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2199 new value now works. (reported by Bruno Haible)
2200 * bug fix: correct canonicalization of multiple non-standard slot
2201 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2202 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2203 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2204 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2205 now exists, an signals an error.
2206 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2207 during macroexpansion for non-iteration variables as well. (reported
2208 by Bruno Haible for CMUCL)
2209 * bug fix: Cyclic structures and unprintable objects in compiler
2210 messages no longer cause errors. (reported by Bruno Haible)
2211 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2212 and READ-FROM-STRING all now return a primary value of NIL if
2213 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2214 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2215 (reported by Bruno Haible for CMUCL)
2216 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2217 do not designate a condition. (reported by Bruno Haible for
2219 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2220 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2221 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2222 permitting resolution in favour of any of the conflicting symbols.
2223 (reported by Bruno Haible for CMUCL)
2224 * bug fix: EQUAL compiler optimizations is less aggressive on
2225 strings which can potentially compare true despite having distinct
2226 specialized array element types.
2227 * bug fix: unit enumerations can be defined without dividing by
2228 zero. (thanks to Vincent Arkesteijn)
2229 * FORMAT compile-time argument count checking has been enhanced.
2230 (report from Bruno Haible for CMUCL)
2231 * a partial workaround for the bug 262: the compiler does not try to
2232 inline-expand a local function doing RETURN-FROM from a deleted
2233 BLOCK. (thanks to Peter Denno for the bug report and to David
2234 Wragg for the simple test case)
2235 * fixed some bugs revealed by Paul Dietz' test suite:
2236 ** RENAME-PACKAGE allows all package designators as new package
2238 ** constraint propagation and lambda variable substitution are
2239 more cautious in dealing with partially deleted code.
2240 ** compiler sometimes lost reoptimization passes.
2241 ** CERROR, given a condition as condition designator, passes its
2242 remaining arguments to the continue format control without
2244 ** Case-altering FORMAT directives work correctly on non-ASCII
2246 ** The REAL type specifier handles bounds outside the floating
2247 point ranges without signalling FLOATING-POINT-OVERFLOW.
2248 ** Functions with IR1-transformations can create intercomponent
2249 references to global functions.
2250 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2252 ** FORMAT ~R treats a nil value for its first parameter correctly.
2254 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2255 * enhancement: saving cores with foreign code loaded is now
2256 supported on x86/NetBSD and sparc/Linux in addition to the previously
2257 supported platforms.
2258 * bug fix: on some platforms repeated installations caused multiple
2259 copies of HTML documentation to be installed -- should not happen
2260 any more. (reported by Stefan Scholl)
2261 * bug fix: parsing self-recursive alien record types multiple times
2262 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2263 original patch by Helmut Eller for CMUCL)
2264 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2265 (thanks to Richard Kreuter)
2266 * bug fix: defining classes whose accessors are methods on existing
2267 generic functions in other (locked) packages no longer signals
2268 bogus package lock violations. (reported by François-René Rideau)
2269 * bug fix: special variables as DEFMETHOD parameters no longer have
2270 associated bogus type declarations. (reported by David Wragg and
2272 * bug fix: read-write consistency on streams of element-type
2273 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2274 * bug fix: redefiniton of the only method of a generic function with
2275 no DEFGENERIC no longer emits a full WARNING. In addition,
2276 redefinition of generic functions with no DEFGENERIC to an
2277 incompatible lambda list now signals an error. (thanks to Zach
2279 * bug fix: DEFGENERIC now works even when there's a function of the
2280 same name in an enclosing lexical environment. (thanks to Zach
2282 * fixed compiler failure, caused by instrumenting code during
2283 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2284 * optimization: added loop analysis and improved register allocation
2285 * fixed some bugs revealed by Paul Dietz' test suite:
2286 ** POSITION on displaced vectors with non-zero displacement
2287 returns the right answer.
2288 ** (SIMPLE-STRING) is a valid type specifier for sequence
2290 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2292 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2293 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2295 ** The justification version of the FORMAT ~< directive treats
2296 non-zero minpad parameter correctly.
2298 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2299 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2300 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2301 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2302 the supported interface.
2303 * new feature: Single-stepping of code compiled with DEBUG 2 or
2304 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2305 * new feature: saving cores with foreign code loaded is now
2306 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2307 Timothy Moore's work for CMUCL)
2308 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2309 parameters to * instead of NIL if no initform is supplied.
2310 (reported by Johan Bockgaard)
2311 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2312 correctly when FUNCALL appears as the car of the form. Note:
2313 despite this FUNCALL forms are not currently subject to
2314 compiler-macro expansion. (port of Raymond Toy's fix for the
2315 same from CMUCL, reported by Johan Bockgaard)
2316 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2317 (thanks for Teemu Kalvas)
2318 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2319 case instead of terminating the iteration (thanks for Julian
2320 Squires, Sean Champ and Raymond Toy)
2321 * bug fix: incorrect expansion of defgeneric that caused a style
2322 warning. (thanks for Zach Beane)
2323 * bug fix: slot accessor effective method computation works properly
2324 for classes with multiple non-standard applicable methods on
2325 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2326 * on x86 compiler supports stack allocation of results of LIST and
2327 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2328 CMUCL implementation by Gerd Moellmann)
2329 * fixed some bugs revealed by Paul Dietz' test suite:
2330 ** FORMAT strings with both the ~<~:;~> form of the justification
2331 directive and pretty-printing directives cause an error.
2333 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2334 * incompatible change: the internal functions
2335 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2336 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2337 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2338 instead of the old functions.
2339 * new feature: on platforms where "dladdr" is available foreign
2340 function names now appear in backtraces. (based on Helmut Eller's
2342 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2343 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2345 * documentation: ASDF manual is now distributed with SBCL.
2346 * bug fix: SBCL can now load its contributed modules with REQUIRE
2347 even if the system-provided entries have been removed from
2348 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2350 * bug fix: backtraces involving undefined functions or assembly
2351 routines are more informative. (thanks to Brian Downing)
2352 * bug fix: mutually referent alien structures now work correctly.
2353 (reported by Rick Taube)
2354 * bug fix: structures defined by WITH-ALIEN can be referred to
2355 within other definitions in the same WITH-ALIEN.
2356 * bug fix: division operators (MOD, TRUNCATE and the like) with
2357 constant zero divisors and integer dividends no longer generate
2359 * bug fix: provide default methods for INPUT-STREAM-P and
2360 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2361 * bug fix: improve the detection and resolution of MOP metacycles
2362 (where effective method computation depends on the generic function
2363 having its effective method computed). (reported by Bruno Haible)
2364 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2365 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2366 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2367 * bug fix: pathnames with relative directory components can be
2368 represented relative to default pathnames.
2369 * optimization: in taking the GCD of bignums, reduce the two bignums
2370 to approximately the same size (using Euclid's algorithm) before
2371 applying the more sophisticated binary GCD. (thanks to Juho
2373 * optimization: COUNT on bitvectors now operates word-at-a-time.
2374 * optimization: ASH with a positive, but not necessarily constant,
2375 (leftwards) shift, when in a modular context, is compiled to a
2377 * fixed some bugs revealed by Paul Dietz' test suite:
2378 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2379 if the corresponding argument is NIL.
2380 ** FORMAT directives accepting a minpad parameter treat negative
2382 ** literal commas as character parameters to FORMAT directives are
2384 ** literal spaces directly after ~<Newline> directives within a
2385 format-logical-block (~:< ~@:>) do not induce :FILL-style
2386 conditional newlines.
2387 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2388 as specified: it no longer includes conditional newlines).
2389 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2391 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2392 :PER-LINE-PREFIX argument does not evaluate to a string.
2394 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2395 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2396 the manual for details; for now, package locks can be disabled by
2397 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2398 if no major problems are found then it is likely that they will be
2399 compiled in unconditionally.
2400 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2401 unsupported operators on all platforms. To load a shared library
2402 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2403 object file, link it into a shared library outside of SBCL and
2404 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2406 * bug workaround: ROOM T and the GC were not working together
2407 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2408 reporting facility aren't preserved. That reporting has been
2409 disabled, so now until and unless someone figures out how to make it
2410 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2411 * minor incompatible change: as threatened around sbcl-0.8.0, the
2412 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2413 The symbols are also exported from SB-PCL for backwards
2414 compatibility, but more so than before SB-PCL should be treated as
2415 an implementation-internal package.
2416 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2418 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2419 It is known as of this release not to work on the Alpha, however.
2420 * fixed bug #167: errors signalled due to illegal syntax in method
2421 bodies are now more legible.
2422 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2423 designators and can hence be used with TYPEP.
2424 * fixed bug #333: CHECK-TYPE now ensures that the type error
2425 signalled, if any, has the right object to be accessed by
2426 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2427 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2428 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2430 * fixed bug #334: programmatic addition of slots using specialized
2431 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2432 and :ALLOCATION :CLASS slots.
2433 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2434 float exponents. (rereported by Peter Seibel)
2435 * fixed a bug: #\Space (and other whitespace characters) are no
2436 longer considered to be macro characters in standard syntax by
2437 GET-MACRO-CHARACTER.
2438 * fixed bug: initialization of condition class metaobjects no longer
2439 causes an instance of the condition to be created. (reported by
2441 * fixed bug: it is now possible to have slots such that
2442 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2443 description is neither :INSTANCE nor :CLASS.
2444 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2445 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2446 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2447 non-standard SLOT-DEFINITION-ALLOCATION values.
2448 * fixed bugs: various race conditions handling exiting threads.
2449 CL-PPCRE's thread torture test now passes.
2450 * fixed arguably-a-bug: GC time proportional to number of threads in
2451 system even when most of them are idle
2452 * optimization: improved performance of BIT and SBIT on bit-vectors.
2453 * .fasl file incompatibility: The fasl file version number has
2454 been incremented because of changes associated with package locks.
2456 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2457 * minor incompatible change: the system no longer provides
2458 optimization hints (conditions which are TYPEP
2459 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2460 mode; these hints are still emitted when higher SPEED optimization
2462 * new contrib module: a sampling profiler (profiling by statistical
2463 sampling, rather than by instrumenting functions) is available as
2464 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2465 * the behaviour of the standard function ED is now customizeable by
2466 third parties through a hook variable: see ED's documentation
2467 string for information on the protocol.
2468 * the compiler no longer emits efficiency notes for (FUNCALL X)
2469 when the type of X is uncertain under default optimization
2471 * fixed bug 276: mutating a binding of a specialized parameter to a
2472 method to something that is not TYPEP the specializer is now
2474 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2475 exhibit the required behaviour on the x86 platform. (thanks to
2476 Peter van Eynde, Eric Marsden and Bruno Haible)
2477 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2478 even for difficult arguments. (reported by Peter Graves)
2479 * fixed bug 141a: the backquote printer now descends quoted
2481 * fixed another bug in backquote printing: no more destructive
2482 modification of the form's list structure. (reported by Brian
2484 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2485 move between its address being taken and the call to
2486 interrupt_thread, fixing a crashing race condition.
2487 * the SB-POSIX contrib implementation has been adjusted so that it
2488 no longer exhibits ridiculously poor performance when constructing
2489 instances corresponding to C structs.
2491 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2492 * minor incompatible change: the sb-grovel contrib now treats C
2493 structures as alien (in the sense of SB-ALIEN) objects rather than
2494 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2495 has implications for memory management of client code
2496 (sb-grovel-returned objects must now be manually managed) and for
2497 type safety (alien objects now have full types).
2498 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2499 used to control emission of compiler diagnostics, rather than the
2500 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2501 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2502 quality should be considered deprecated.
2503 * install.sh now installs the user manual as well
2504 * (not quite a new documentable feature, but worth considering in
2505 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2506 beginnings of a semantically meaningful condition hierarchy is
2507 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2509 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2510 designator as the defaults argument.
2511 * fixed bug: Displaced arrays whose displaced-to array has become
2512 too small now cause ARRAY-DIMENSION to signal an error, providing
2513 for safer bounds-checking. (reported by Bruno Haible)
2514 * fixed bug: DEFCLASS slot definitions with identical :READER and
2515 :WRITER names now signal a reasonable error. (reported by Thomas
2517 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2519 * fixed bug: Invalid slot specification errors now print correctly.
2520 (thanks to Zach Beane)
2521 * fixed bug 320: Shared to local slot value transfers in class
2522 redefinitions now happen corrently from superclasses as
2523 well. (reported by Bruno Haible)
2524 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2526 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2527 improper lists correctly. (reported by Bruno Haible)
2528 * fixed bug 313: source-transform for <fun-name> was erroneously
2529 applied to a call of a value of a variable with name <fun-name>.
2530 (reported by Antonio Menezes Leitao)
2531 * fixed bug 307: The obsolete instance protocol ensures that
2532 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2533 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2534 remove dead unknown-values globs from the middle of the stack.
2535 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2536 easier to resume long computations after using *BREAK-ON-SIGNALS*
2537 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2538 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2539 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2540 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2541 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2542 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2544 * fixed a (fairly theoretical) bug in string printing: if
2545 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2546 does not have array-element-type equal to the most general string
2548 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2549 function name. (thanks to Nikodemus Siivola)
2550 * fixed bug: compile-time format string checker failed on
2551 non-closed ~{. (reported by Thomas F Burdick)
2552 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2553 don't warn on legal loop code involving more than one aggregate
2554 boolean. (thanks to Nikodemus Siivola)
2555 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2556 in keyword position to MAKE-PACKAGE was not being reported as
2558 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2559 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2561 * fixed bugs 280 and 312: the checking for multiple definitions in a
2562 file is less likely to become confused by uses of inline
2564 * fixed bug: the #S reader macro performs the keyword coercion
2565 specified for slot names. (reported by Kalle Niemitalo)
2566 * fixed bug: lambda lists may contain symbols whose names start with
2567 & but are not lambda-list-keywords; their occurrence triggers a
2569 * fixed bug 321: define-method-combination argument lambda lists do
2570 not cause invalid code to be generated when &optional or &aux
2571 variables have default values. (reported by Bruno Haible)
2572 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2573 have CLOS classes; this appears also to have fixed reported
2574 instability in stack exhaustion detection.
2575 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2576 MUFFLE-WARNING when no associated restart is present is now
2578 * optimization: rearranged the expansion of various defining macros
2579 so that each expands into only one top-level form in a
2580 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2582 * optimization: used a previously little-used slot in symbols to
2583 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2585 * fixed some bugs revealed by Paul Dietz' test suite:
2586 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2588 ** Fixed an optimization bug related to inheritance of initforms
2589 from local to shared slots.
2590 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2591 ** CAST optimizer forgot to flush argument derived type.
2592 ** print/read consistency on floats is now orders of magnitude
2593 more likely. (thanks also to Bruno Haible for a similar report
2595 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2596 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2597 for objects of type REAL. Make it so.
2598 ** SXHASH is specified (infelicitously) to respect similarity,
2599 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2600 it so. (thanks to Markus Ziegler)
2601 ** on the Alpha, the compiler succeeds in compiling functions
2602 returning a known number of arguments greater than 63.
2603 ** fixed handling of invalid NIL arguments in keyword position
2605 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2607 ** provided a readably-printable representation for RANDOM-STATE
2609 ** ensured that pathnames, where they have a namestring, always
2610 print using #P"..." syntax.
2612 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2613 * Support for the forthcoming 2.0 version of the NetBSD kernel
2614 running on x86 hardware has been added. (thanks to Perry
2615 E. Metzger most immediately, and others for their past work)
2616 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2617 current release version; SBCL's OpenBSD support had been broken
2618 since about the time of OpenBSD's switch to ELF binary format.)
2619 * [placeholder for DX summary]
2620 ** user code with &REST lists declared dynamic-extent, under high
2621 speed or space and low safety and debug optimization policy.
2622 * The manual has been converted to Texinfo format and the debugger
2623 chapter from the cmucl manual has been added.
2624 * A facility has been added to extract documentation strings from
2625 sbcl and store them as Texinfo-formatted snippets for inclusion in
2626 the manual (via Texinfo's @include directive)
2627 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2628 the test case to Dave Roberts)
2629 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2630 pointers. (reported by Sean Ross)
2631 * bug fix: PROFILE output is printed nicely even for large numerical
2632 values. (thanks to Zach Beane)
2633 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2634 greater than 32 handle EOF correctly.
2635 * bug fix: on X86 an immediate argument of the IMUL instruction is
2636 correctly printed in disassembly. (thanks to Lutz Euler)
2637 * bug fix: class slots in redefined classes preserve their old
2638 values. (thanks to Bruno Haible and Nikodemus Siivola)
2639 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2640 succeeds. (reported by Marco Baringer)
2641 * fixed some bugs revealed by Paul Dietz' test suite:
2642 ** READ-SEQUENCE now works on ECHO-STREAMs.
2643 ** RATIONALIZE works more according to its specification. (thanks
2646 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2647 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2648 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2649 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2650 should matter to you only if you rebind the printer control
2651 variables and then find you want different bindings in the
2652 debugger than in the ordinary execution of your program.)
2653 * The runtime build system has been tweaked to support building
2654 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2655 assembler and linker. (thanks to Nikodemus Siivola)
2656 * Unbound, undefined, undeclared variables now trigger full
2657 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2658 more often programmer error than deliberate exploitation of undefined
2660 * optimization: the hash algorithm for strings has changed to one
2661 that is less vulnerable to spurious collisions. (thanks to Juho
2663 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2664 needless bounds checking. (thanks to Juho Snellman)
2665 * optimization: implemented multiplication as a modular
2666 (UNSIGNED-BYTE 32) operation on the PPC backend.
2667 * fixed some bugs revealed by Paul Dietz' test suite:
2668 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2670 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2671 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2672 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2674 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2676 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2678 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2679 their output stream on EOF from read.
2680 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2681 have been read to end-of-file.
2682 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2684 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2685 description of determination of which consecutive characters
2687 ** Printing the "Space" character with escaping on now yields "#\\ ",
2688 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2689 ** Reading floating-point numbers with *READ-BASE* set to a number
2690 less than 10 works correctly.
2691 ** Reading floating-point numbers with *READ-BASE* set to a number
2692 more than 10 works correctly.
2693 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2694 the readtable currently in effect.
2696 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2697 * minor incompatible change: parsing of namestrings on a physical
2698 (Unix) host has changed; numbers after the final #\. in a
2699 namestring are no longer interpreted as a version field. This is
2700 intented to be largely invisible to the user, except that the
2701 meaning of the namestring "*.*.*" has changed: it now refers to a
2702 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2703 should usually be replaced by
2704 (make-pathname :name :wild :type :wild :version :wild)
2705 with the added benefit that this is more likely to be portable.
2706 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2707 option to OPEN now signals an error if the file being opened
2708 exists; this may have an impact on existing code.
2709 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2710 signals received, on the PowerPC platforms (both Linux and
2711 Darwin). (thanks to Pierre Mai for pointing out the location of
2713 * several fixes on OS X: The system now builds and runs cleanly on
2714 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2715 (thanks to Brian Mastenbrook)
2716 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2717 second-resolution: integer multiples of 1/3600 between -24 and 24.
2718 (thanks to Vincent Arkesteijn)
2719 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2720 type when called with 1 argument; PEEK-CHAR checked type of
2721 PEEK-TYPE only after having read first character from a
2722 stream. (reported by Peter Graves)
2723 * bug fix: the garbage collector now has much better locality
2724 behaviour, and in particular no longer treats all memory as being
2725 exhausted when many small objects point to each other in a deeply
2727 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2728 recognized as being TYPEP their class.
2729 * bug fix: the PUSHNEW documentation string has been corrected.
2730 (thanks to Vincent Arkesteijn)
2731 * bug fix: defaulting of the value for the last of an atypically
2732 large number of multiple values being bound was not being
2733 performed correctly on the Alpha or PPC platforms
2734 * optimization: implemented multiplication as a modular
2735 (UNSIGNED-BYTE 32) operation on the x86 backend.
2736 * optimization: SEARCH on simple-base-strings can now be open-coded.
2737 (see also contrib/compiler-extras.lisp for inspiration for
2738 teaching the compiler about the Boyer-Moore algorithm).
2739 * value, returned by MAX (and MIN) called with several EQUALP, but
2740 not EQL, arguments now does not depend on compiler settings.
2741 * fixed some bugs revealed by Paul Dietz' test suite:
2742 ** in stack analysis liveness information is propagated from
2743 non-local entry points.
2744 ** pathwise CAST removing failed when the CAST node did not start
2746 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2747 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2749 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2750 host is already defined.
2751 ** RENAME-FILE works on streams instead of signalling an internal
2753 ** PEEK-CHAR uses the current readtable when determining whether
2754 or not a character is whitespace.
2755 ** MERGE-PATHNAMES handles the case when the pathname does not
2756 specify a name while the default-pathname specifies a version.
2757 ** Pathnames now stand a better chance of respecting print/read
2759 ** Attempting to use standardized file system operators with a
2760 pathname with invalid :DIRECTORY components signals a
2762 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2764 ** DIRECTORY on logical pathnames is more correct.
2765 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2766 signal a TYPE-ERROR if their argument is not a stream.
2767 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2768 designator argument does not designate a stream.
2769 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2770 examining the synonym.
2771 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2773 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2774 element-type larger than ([UN]SIGNED-BYTE 32).
2776 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2777 * When built with the :SB-FUTEX feature, threaded builds now take
2778 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2779 for faster/more reliable mutex and condition variable support.
2780 * Incompatible change (but one you probably shouldn't have been using
2781 anyway): the interface and code for arbitrating between multiple
2782 threads in the same user session has been redesigned.
2783 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2784 error when called without an explicit environment argument.
2785 (thanks to Nikodemus Siivola)
2786 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2787 confused about their position. (thanks to Adam Warner and Gerd
2789 * bug fix: Pretty printing backquoted forms with unquotations in the
2790 argument list position of various code constructs such as LAMBDA
2791 now works correctly. (reported by Paul Dietz)
2792 * bug fix: Pretty printing unquotations no longer loses all
2793 stream position information.
2794 * optimization: performance of string output streams is now less
2795 poor for multiple small sequence writes.
2796 * optimization: performance of CSUBTYPEP in the presence of complex
2797 expressions involving CONS and NOT many times has been improved.
2798 (reported by Paul Dietz)
2799 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2801 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2802 streams for the REPL, for the debugger, and so on. (thanks to
2804 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2805 * fixed some bugs revealed by Paul Dietz' test suite:
2806 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2807 is ignored if it is too small, rather than propagating through
2808 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2809 ** extremely complex negations of CONS types were not being
2810 sufficiently canonicalized, leading to inconsistencies in
2812 ** VALUES tranformer lost derived type.
2814 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2815 * fixed a bootstrapping bug: the build process no longer assumes
2816 that the various BOOLE-related constants have the same value in
2817 host and target lisps. (noted by Paul Dietz' test suite on an
2818 SBCL binary built from CLISP)
2819 * The system can now be dynamically linked on the MIPS platform,
2820 which enables dynamic loading of foreign code from Lisp. (thanks
2821 to Ralf Baechle for discussions on the MIPS ABI)
2822 * The system now records debugging information for its own source
2823 files in a filesystem-position-independent manner, relative to
2824 the "SYS" logical host.
2825 * fixed a compiler bug: MV-LET convertion did not check references
2826 to the "max args" entry point. (reported by Brian Downing)
2827 * tweaked disassembly notes to be less confident about proclaiming
2828 some instruction as an LRA. (thanks to Brian Downing)
2829 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2830 now each have their own history, command character, and other
2831 characteristics. (thanks to David Lichteblau)
2832 * fixed some bugs revealed by Paul Dietz' test suite:
2833 ** compiler failure in compiling LOGAND expressions including a
2835 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2836 shift greater than 32.
2837 ** FLUSH-DEST did not mark blocks for type check regeneration.
2838 ** HANDLER-CASE failed to accept declarations in handler clauses
2839 in some circumstances.
2841 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2842 * New code in contrib/sb-introspect (still probably not entirely
2843 stable yet) provides some support for smart Lisp development
2844 environments like SLIME.
2845 * The conditions signalled for errors occurring when loading .fasl
2846 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2847 in a way which should help ASDF recover gracefully.
2848 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2849 stuff has been cleaned up. If you code contrib/ stuff, this might
2850 affect you, and you can look at contrib/README, contrib/STANDARDS,
2851 and/or the 0.8.4.27 diff to check.
2852 * In full calls the compiler now does not generate checks for declared
2853 argument types for all arguments.
2854 * various threading fixes
2855 ** and some experimental patches which didn't make it into
2856 the main tree for this release, but which are shipped in
2857 contrib/experimental-thread.patch as a possible fix for some
2858 failures (deadlock, spinning...) in GC-intensive multithreaded
2860 * fixed PPC build problem (source code incompatibility of different
2861 library versions): added offsetof() hackery which attempts to divine
2862 where glibc maintainers put uc_mcontext today
2863 * fixed bug 282: compiler does not trust type assertions while passing
2864 arguments to a full call.
2865 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2866 &OPTIONAL VALUES type parameter.
2867 * fix bug 214: algorithm for noting rejected templates is now more
2868 similar to that of template seletion. (also reported by rydis on
2870 * fixed bug 141b: printing backquoted information readably and prettily
2871 inserts a space where necessary.
2872 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2873 (CHARACTER 10) are now reported as errors, rather than propagated
2874 as unknown types. (reported by piso on #lisp)
2875 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2876 with values NIL and :ERROR. (thanks to Milan Zamazal)
2877 * fixed bug 191c: CLOS now does proper keyword argument checking as
2878 described in CLHS 7.6.5 and 7.6.5.1.
2879 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2880 longer raise an error; further, using a list as a for-as-arithmetic
2881 counter now raises a meaningful error.
2882 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2883 now understood by sequence creation functions such as MAKE-SEQUENCE
2885 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2886 a STRING-INPUT-STREAM.
2887 * compiler enhancement: SIGNUM is now better able to derive the type
2889 * type declarations inside WITH-SLOTS are checked. (reported by
2891 * fixed some bugs revealed by Paul Dietz' test suite:
2892 ** incorrect optimization of TRUNCATE for a positive first
2893 argument and negative second.
2894 ** compiler failure in let-convertion during flushing dead code.
2895 ** compiler failure while deriving type of TRUNCATE on an
2896 interval, containing 0.
2897 ** ASH of a negative bignum by a negative bignum count now returns
2899 ** intersection of CONS types now canonicalizes properly, fixing
2900 inconsistencies in SUBTYPEP.
2902 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2903 * incompatible change: The --disable-debugger command line
2904 option now clobbers the debugger at a more fundamental
2905 level, by redefining #'INVOKE-DEBUGGER instead of by
2906 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2907 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2908 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2909 enter the debugger REPL and then suffer recursive errors
2910 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2911 while under the new system, BREAK in --disable-debugger mode
2912 terminates the system just as an unhandled error would.
2913 * fixed compiler performance when processing loops with a step >1;
2914 * bug fix: DOCUMENTATION now retrieves generic function
2915 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2916 support has been systematized, and now supports the methods
2917 specified by ANSI, along with a default method and a method for
2918 slot documentation. (reported by Nathan Froyd)
2919 * bug fix: effective methods associated with a generic function are
2920 no longer cached over a change of that generic function's method
2921 combination. (reported by Andreas Fuchs)
2922 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2923 names a non-existent directory. (thanks to Andreas Fuchs)
2924 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2925 the PPC platform, lead to stack corruption; this has been fixed.
2926 (reported by Rainer Joswig)
2927 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2928 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2929 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2930 arithmetic in general, is now much more reliable on the PPC
2932 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2933 platform now returns the right answer.
2934 * optimization: restored some effective method precomputation in
2935 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2936 precomputation is now tunable.
2937 * optimization: compiler-internal data structure use has been
2938 reviewed, and changes have been made that should improve the
2939 performance of the compiler by about 20%.
2940 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2941 simple-base-strings and simple-bit-vectors is improved.
2942 * optimization: the optimization of 32-bit logical and arithmetic
2943 functions introduced in version 0.8.3 on the x86 has been
2944 implemented on the mips, ppc and sparc platforms; an
2945 implementation of the same facility, but for 64-bit arithmetic,
2946 has been added for the alpha.
2947 * microoptimization: the compiler is better able to make use of the
2948 x86 LEA instruction for multiplication by constants.
2949 * bug fix: in some situations compiler did not report usage of
2950 generic arithmetic in (SPEED 3) policy.
2951 * bug 145b fix: compiler used wrong type specifier while converting
2952 MEMBER-types to numeric.
2953 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2955 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2956 index argument now works properly on the Alpha platform.
2957 * bug fix: floating point exception treatment on the Alpha platform
2959 * bug fix: FILE-POSITION works much better on string input and
2960 output streams. (thanks to Nikodemus Siivola)
2961 * bug fix: many threading/garbage collection symptoms sorted.
2962 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2963 might be pseudo-atomic.
2964 * internal change: Stopping for GC is now done with signals not
2965 ptrace. GC is now done in whichever thread wanted it, instead of
2967 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2969 * bug fix: result form in DO is not contained in the implicit
2971 * incompatible change: ICR structure is changed; the value part of
2972 CONTINUATION is now called LVAR; corresponding functions are
2973 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2974 * added type deriver for ISQRT (thanks to Robert E. Brown).
2975 * bug fix: better support for loading from the command line when an
2976 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2978 * fixed some bugs revealed by Paul Dietz' test suite:
2979 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2980 ** ROUND and FROUND now give the right answer when given very
2981 small float arguments.
2982 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2984 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2985 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2986 ** LCM should return a non-negative integer.
2987 ** PARSE-INTEGER returned the index of a terminator instead of the
2988 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2989 ** PARSE-INTEGER returned an incorrect index being applied to a
2991 ** LCM with two arguments of 0 returns 0 rather than signalling
2993 ** unsigned addition of a 32-bit constant with the high bit set no
2994 longer causes an internal compiler error on the x86.
2995 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2996 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2997 with negative last argument.
2998 ** byte specifiers with zero size and position no longer cause
2999 an error during type derivation.
3000 ** bignum multiplication on the Alpha platform now returns the
3002 * porting: The system now builds on SuSE AMD64, although it still
3003 generates a 32-bit binary.
3004 * .fasl file incompatibility: The fasl file version number has
3005 been incremented (because of the changes to internal compiler
3006 data structures referred to above).
3008 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3009 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3010 more accurately, on the Darwin kernel running on PowerPC hardware.
3011 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3012 * Compiler code deletion notes now signal a condition of type
3013 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3014 an associated MUFFLE-WARNING restart.
3015 * The compiler now performs limited argument count validation of
3016 constant format strings in FORMAT, and where appropriate in ERROR,
3017 CERROR and WARN. (thanks to Gerd Moellmann)
3018 * New ASDF-INSTALL contrib can be used for automatic download and
3019 installation of third-party Lisp code from CCLAN or other sites
3021 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3022 which forces another thread to execute a function supplied by the
3024 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3025 now accept and act upon their :ELEMENT-TYPE keyword argument.
3026 (reported by Martin Atzmueller, Edi Weitz)
3027 * bug fix: FILE-POSITION now accepts position designators up to
3028 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3029 is the greater. (thanks to Patrik Nordebo)
3030 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3031 Kalle Olavi Niemitalo)
3032 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3033 printable. (reported by Eric Marsden)
3034 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3035 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3036 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3037 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3038 (thanks to Stig Sandoe)
3039 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3040 UNREAD-CHAR now correctly includes the unread character in the
3041 target sequence. (thanks to Gerd Moellmann)
3042 * bug fix in threaded builds: the system can now be suspended and
3043 resumed by shell job control with minimal disruption.
3044 * bug fixes in times and timezones >2038AD
3045 * better handling of "where is GNU make?" problem in build scripts
3046 (thanks to Nikodemus Siivola)
3047 * new optimization: inside a named function any reference to a
3048 function with the same name is considered to be a self-reference;
3049 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3050 optimization quality.
3051 * new optimization on x86: logical functions and + now have
3052 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3053 used when the result is truncated to 32 bits.
3054 * VALUES declaration is partially enabled.
3055 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3056 * fixed some bugs revealed by Paul Dietz' test suite:
3057 ** The system now obeys the constraint imposed by
3058 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3059 types form a lattice under type intersection.
3060 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3061 ** ASSOC now ignores NIL elements in an alist.
3062 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3063 and (1+ MOST-POSITIVE-FIXNUM) answers.
3064 ** The addition of a method with invalid qualifiers to a generic
3065 function does not cause an error to be signalled immediately;
3066 a warning is signalled, and the error is generated only on
3067 calling the generic function.
3068 * changed .fasl file version number, in part to add type codes for
3069 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3070 obscure ANSI requirements
3072 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3073 * fixed bug 148: failure to inline-expand a local function left
3074 garbage, confusing the compiler.
3075 * fixed bugs 3cd: structure slot readers perform type check if the
3076 slot can have an invalid value (i.e. it is either not initialized
3077 or can be written with a less specific slot writer).
3078 * bug fix: the compiler now traps array references to elements off
3079 the end of an array; previously, the bounds checking in some
3080 circumstances could go off-by-one.
3081 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3083 * type declarations for array element types now obey the description
3084 on the CLHS page "Declaration TYPE", as per discussions on
3085 sbcl-help around 2003-05-08. This means that a declaration
3086 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3087 declaration, all references to BAR will be asserted or assumed
3088 (with THE, so dependent on compiler policy) to involve objects of
3089 type FOO. Note that no such declaration is implied in
3090 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3091 * declared types of functions from the "Conditions"
3092 chapter. (reported by Paul Dietz)
3093 * bug fix: CERROR accepts a function as its first argument.
3094 * bug fix: NTH an NTHCDR accept a bignum as index
3095 arguments. (reported by Adam Warner)
3096 * optimization: character compare routines now optimize comparing
3097 against a constant character. (reported by Gilbert Baumann)
3098 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3099 argument now works properly on the MIPS platform.
3100 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3101 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3102 declared to have a functional type, does not cause an error
3104 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3105 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3106 * fixed bug: if last continuation of a deleted block has a
3107 destination, this destination should be deleted too. (reported by
3109 * fixed a bug in the bootstrap process: the host compiler's values
3110 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3111 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3112 test case from Patrik Nordebo)
3113 * improved the ability of the disassembler on the PPC platform to
3114 provide helpful disassembly notes.
3115 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3116 the class in more cases than previously.
3117 * bug fix: FILE-POSITION now understands :START and :END for
3118 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3119 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3120 8) data. (thanks to David Lichteblau)
3121 * bug fix: it is possible to add a method to a generic function
3122 without lambda list.
3123 * bug fix: reader failed to signal END-OF-FILE inside an
3124 object representation. (reported by Nikodemus Siivola)
3125 * fixed some bugs revealed by Paul Dietz' test suite:
3126 ** LAST and [N]BUTLAST should accept a bignum.
3127 ** condition slot accessors are methods.
3128 ** (VECTOR NIL) is a subtype of STRING.
3130 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3131 * minor incompatible change: some nonsensical specialized lambda
3132 lists (used in DEFMETHOD) which were previously ignored now signal
3134 * minor incompatible change: the system is now aware of the types of
3135 variables in the COMMON-LISP package, and will signal errors for
3136 most violations of these type constraints (where previously they
3137 were silently accepted).
3138 * minor incompatible change: COMPILE-FILE now uses the freedom
3139 afforded (ANSI 3.2.2.3) to use derived function types for
3140 functions defined in the same file. This also permits the system
3141 to warn on static type mismatches and function
3142 redefinition. (Currently it does not work with high DEBUG level.)
3143 * minor incompatible change: VALUES declaration is disabled.
3144 * When issuing notes, the compiler now signals a condition of type
3145 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3146 restart for use in user handlers. It is expected that the
3147 COMPILER-NOTE condition will eventually become a condition
3148 supertype to a hierarchy of note types, which will then be
3149 handleable in a similar fashion. However, at the moment, no such
3150 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3151 but it's an implementation detail, not a classification for the
3153 * Changes in type checking closed the following bugs:
3154 ** type checking of unused values (192b, 194d, 203);
3155 ** template selection based on unsafe type assertions (192c, 236);
3156 ** type checking in branches (194bc).
3157 * A short form of VALUES type specifier has ANSI meaning (it has
3158 increased the number of situations when SBCL cannot perform type
3160 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3161 keywords or constants is permissible.
3162 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3163 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3164 classes. (thanks to Antonio Martinez)
3165 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3166 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3167 argument to a pretty-print stream. Instead, it leaves any such
3168 operations to DESCRIBE-OBJECT methods.
3169 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3171 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3172 lambda lists. (thanks to David Lichteblau)
3173 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3174 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3175 (thanks to Gerd Moellmann)
3176 * fixed bug 246: increased compilation speed of long
3177 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3179 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3181 * DEFCONSTANT now throws a condition of type
3182 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3183 constant to a non-EQL value; CONTINUE and ABORT restarts
3184 respectively change and preserve the value.
3185 * fixed bug 63: The code walker, part of the implementation of CLOS,
3186 is now better at handling symbol macros.
3187 * bug fix: There is no longer an internal implementation type named
3188 CL:LENGTH. (reported by Raymond Toy)
3189 * bug fix: In macro-like defining macros/special operators the
3190 implicit block does not enclose the lambda list.
3191 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3192 enclosed in parentheses) are not suitable as type specifiers, and
3193 their use properly signals an error now.
3194 * bug fix: An argument count mismatch for a type specifier in code
3195 being compiled no longer causes an unhandled error at compile
3196 time, but signals a compile-time warning.
3197 * fixed simple vector readable printing
3198 * bug fix: DESCRIBE takes more care over whether the class
3199 precedence list slot of a class is bound before accessing it.
3200 (reported by Markus Krummenacker)
3201 * bug fix: FORMATTER can successfully compile pretty-printer format
3202 strings which use variants of the ~* directive inside.
3203 * bug fix: SEARCH now applies its TEST predicate to the elements of
3204 the arguments in the correct order. (thanks to Wolfhard Buss)
3205 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3206 in type inference. (thanks to Robert E. Brown)
3207 * bug fix: Reading in symbols with an explicit package name of ""
3208 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3209 * fixed some bugs revealed by Paul Dietz' test suite:
3210 ** NIL is now allowed as a structure slot name.
3211 ** Arbitrary numbers, not just REALs, are allowed in certain
3212 circumstances in LOOP for-as-arithmetic clauses.
3213 ** Multiple class redefinitions before slot access no longer
3214 causes a type error.
3215 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3216 association between the name and a class.
3217 ** Generic functions with non-standard method-combination and over
3218 five methods all of which return constants no longer return NIL
3219 after the first few invocations. (thanks to Gerd Moellmann)
3220 ** CALL-NEXT-METHOD with no arguments now passes the original
3221 values of the arguments, even in the presence of assignment.
3222 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3224 ** DISASSEMBLE works with closures and funcallable instances.
3225 ** ADD-METHOD now returns the generic function, not the new method.
3226 ** FIND-METHOD signals an error if the lengths of the specializers
3227 is incompatible with the generic function, even if the ERRORP
3229 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3230 which its argument is a member.
3231 ** DEFCLASS only redefines the class named by its class-name
3232 argument if that name is the proper name of the class;
3233 otherwise, it creates a new class.
3234 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3235 of the UNBOUND-SLOT condition to the name of the slot.
3236 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3237 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3238 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3239 SLOT-MAKUNBOUND in the specified fashion.
3241 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3242 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3243 cross-compilation host. As a consequence, we can now bootstrap our
3244 way up to SBCL starting with a bare gcc toolchain and human-readable
3245 source code (first the source to CLISP, then the source to SBCL).
3246 * A contributed module containing a partial implementation of the
3247 simple-streams interface has been included. (thanks to Rudi
3249 * A contributed module implementing the RFC1321 Message Digest
3250 Algorithm, known as MD5, has been included.
3251 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3252 no longer has any effect, as the code controlled by this feature
3253 has been deleted. (As far as we know, no-one has ever built using
3254 this feature, and its semantics were confused in any case).
3255 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3256 work on conditions (as required by the ANSI specification),
3257 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3258 expected behaviour on conditions. Users should note, however,
3259 that such behaviour is not required by the ANSI specification,
3260 and so use of this behaviour may render their code unportable.
3261 * fixed some bugs revealed by Paul Dietz' test suite:
3262 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3264 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3265 ** SXHASH on condition objects no longer returns NIL.
3266 ** :ALLOCATION :CLASS slots are better treated; their values are
3267 updated on class redefinition, and initforms inherited from
3268 superclasses are applied.
3269 ** REMOVE-METHOD returns its generic function argument even when
3270 no method was removed.
3271 ** SHARED-INITIALIZE now initializes the values of the requested
3272 slots, including those with :ALLOCATION :CLASS.
3273 ** ALLOCATE-INSTANCE now works on structure classes defined via
3274 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3276 ** SLOT-EXISTS-P now works on conditions, as well as structures
3278 ** MAKE-LOAD-FORM now has the required methods on
3279 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3280 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3281 keyword, and now implements the SLOT-NAMES argument.
3282 ** methods with &OPTIONAL arguments no longer allow too many
3283 arguments to be passed in the call without error.
3284 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3285 option is consistent with the required arguments of the generic
3286 function lambda list.
3287 * bug fix: REQUIRE accepts a string designator. (Thanks to
3289 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3290 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3291 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3292 * bug fix: The compiler now checks for duplicated variables in macro
3294 * bug fix: SETQ on globals returns the correct value.
3295 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3296 not a COMPILER-ERROR (followed by some other strange error on
3297 choosing the CONTINUE restart).
3298 * bug fix: make.sh and friends are now more consistent in the way that
3299 they look for GNU "make".
3301 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3302 * experimental native threads support (on x86 Linux >=2.4 only).
3303 This is not compiled in by default: you need to add :SB-THREAD to
3304 the target features. See the "Beyond ANSI" chapter of the manual
3306 * fix for longstanding nonANSIism: The old distinction between
3307 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3308 The return value from CL:FIND-CLASS is now a CLOS class, and
3309 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3310 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3311 * An interface to the MetaObject Protocol, as described in Kiczales,
3312 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3313 MIT Press, 1991, is available from the SB-MOP package.
3314 * incompatible change: the SB-PCL package should now be considered
3315 a private implementation detail, and no longer a semi-private MOP
3317 * minor incompatible change: due to rearrangement for threads, the
3318 control stack and binding stack are now allocated at arbitrary
3319 addresses instead of being hardcoded per-port. Users affected by
3320 this probably have to be doing advanced things with shared
3321 libraries, and will know who they are.
3322 * minor incompatible change: Previously, all --eval forms used were
3323 processed with READ before any of them were processed with EVAL.
3324 Now each --eval form is processed with both READ and EVAL before
3325 the next --eval form is processed. (Thus package operations like
3326 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3327 work as the user might reasonably expect.)
3328 * minor incompatible change: *STANDARD-INPUT* is now only an
3329 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3331 * minor incompatible change: Y-OR-N-P is now character-oriented,
3332 not line oriented. Also, YES-OR-NO-P now works without errors.
3333 (thanks to Antonio Martinez)
3334 * sb-aclrepl module improvements: an integrated inspector, added
3335 repl features, and a bug fix to :trace command.
3336 * Known functions, which cannot be open coded by the backend, are
3337 considered to be able to check types of their arguments. (fixing
3338 a bug report by Nathan J. Froyd)
3339 * fixed a bug in computing method discriminating functions: It is
3340 now possible to define methods specialized on classes which have
3341 forward-referenced superclasses. (thanks to Gerd Moellmann)
3342 * fixed evaluation order in optional entries (reported by Gilbert
3344 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3345 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3346 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3347 required-by-AMOP NAME argument, as well as CLASS and
3348 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3349 * fixed bug 20: DEFMETHOD can define methods using names that are
3350 not the proper names of classes to designate class specializers.
3351 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3352 Unix file descriptors, instead of blowing up. (thanks to Antonio
3354 * Garbage collection refactoring: user-visible change is that a
3355 call to the GC function during WITHOUT-GCING will not do garbage
3356 collection until the end of the WITHOUT-GCING. If you were doing
3357 this you were probably losing anyway.
3358 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3359 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3360 TYPEP the latter but not the former.
3361 * The compiler issues a full WARNING for calls to undefined functions
3362 with names from the CL package.
3363 * MAP-INTO for a vector destination is open coded. (reported by
3364 Brian Downing on c.l.l)
3365 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3366 documentation string.
3367 * fixed some bugs revealed by Paul Dietz' test suite:
3368 ** COPY-ALIST now signals an error if its argument is a dotted
3370 ** Condition slots are now accessed more correctly in the presence
3371 of multiple initargs for a given slot.
3372 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3373 exclude restarts of the same name associated with a different
3375 ** DEFCLASS of forward-referenced classes with another
3376 forward-referenced class in the superclasses list no longer
3378 ** Condition slots are now initialized once each, not multiple
3379 times. (thanks to Gerd Moellmann)
3380 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3382 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3383 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3384 arguments contain duplicated elements.
3385 ** RESTART-CASE understands local macros.
3386 ** RESTART-CASE associates exactly its own restarts with a condition.
3387 ** ENDP in safe mode checks its argument to be of type LIST.
3388 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3389 in question is unbound.
3390 ** Optimized MAKE-INSTANCE functions no longer cause internal
3391 assertion failures in the presence of duplicate initargs.
3392 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3393 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3394 propagated even in the ctor optimized implementation of
3396 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3398 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3399 * a better implementation of SXHASH on (simple) bit vectors,
3400 measured both in execution speed and in distribution of results
3401 over the positive fixnums, has been installed. Likewise, a better
3402 implementation of EQUAL for simple bit vectors is now available.
3403 * fixed CEILING optimization for a divisor of form 2^k.
3404 * fixed bug 240 (emitting extra style warnings "using the lexical
3405 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3406 by Antonio Martinez)
3407 * fixed SXHASH, giving different results for NIL depending on type
3408 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3409 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3410 variable. (found by Rolf Wester)
3411 * SBCL does not ignore type declarations for special
3412 variables. (reported by rif on c.l.l 2003-03-05)
3413 * some bug fixes in contrib/sb-aclrepl/
3414 * fixed some bugs revealed by Paul Dietz' test suite:
3415 ** a bug in the CONS type specifier, whereby the CAR and CDR
3416 types got intertwined, has been fixed;
3417 ** the type system is now able to reason about the interaction
3418 between INTEGER and RATIO types more completely;
3419 ** APPEND, [N]REVERSE and NRECONC check that those their
3420 arguments, which must be proper lists, are really so;
3421 ** An array specialized to be unable to hold elements has been
3422 implemented, as required -- yes, really -- by ANSI;
3423 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3424 on malformed property lists;
3426 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3427 * incompatible packaging change: in line with Unix convention,
3428 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3429 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3430 * REQUIRE and PROVIDE are now optionally capable of doing something
3431 useful. See the documentation string for REQUIRE.
3432 * infrastructure for a managed SBCL contrib system: contributed
3433 modules in this release include:
3434 ** the ASDF system definition facility;
3435 ** an interface to the BSD Sockets API;
3436 ** an ACL-like convenience interface to the repl;
3437 (thanks to Kevin Rosenberg)
3438 ** an implementation of ROTATE-BYTE, with efficient implementation
3440 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3441 gives a closer approximation to the right answer than previously.
3442 (thanks to Raymond Toy)
3443 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3444 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3445 optional environment arguments, as required by ANSI.
3446 * fixed bugs in other functions taking environment objects, allowing
3447 calls with an explicit NIL environment argument to be compiled
3449 * fixed bug 228: primary return values from
3450 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3451 COMPILE or FUNCTION.
3452 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3453 :TYPE will no longer signal errors on innocuous objects.
3454 * fixed bug 231b: SETQ is better at respecting type declarations in
3455 the lexical environment.
3456 * fixed a bug in DEFCLASS: classes named by symbols with no or
3457 unprintable packages can now be defined.
3458 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3459 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3460 * fixed compiler failure related to checking types of functions.
3461 (reported by Robert E. Brown)
3462 * the compiler is now much more consistent in its error-checking
3463 treatment of bounding index arguments to sequence functions: in
3464 (SAFETY 3) code, errors will be signalled in almost all cases if
3465 invalid sequence bounding indices are passed to functions defined
3466 by ANSI to operate on sequences.
3467 * fixed a bug in the build procedure: documentation of SBCL-specific
3468 packages is now preserved and available in the final Lisp image.
3469 * lifted FDEFINITION lookup out of loops in the implementation of
3470 many list operations. (thanks to Robert E. Brown)
3471 * fixed a bug in the reader: the #n# reader macro now works for
3472 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3473 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3474 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3475 E. Brown and Tony Martinez respectively)
3476 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3477 SLOT-BOUNDP: in particular, it is now able to optimize them much
3478 better, and is now not vulnerable to having packages renamed.
3479 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3480 always called when a slot is not present in an instance. (thanks
3482 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3483 longer signal an error on unreading a character following EOF on
3484 the previous constituent stream. (thanks to Tony Martinez)
3485 * fixed some bugs revealed by Paul Dietz' test suite:
3486 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3487 not just nonnegative fixnums;
3488 ** the logical bit-array operators such as BIT-AND now accept an
3489 explicit NIL for their "opt-arg" argument (to indicate a
3490 freshly-consed result bit-array);
3491 ** ELT now signals an error on an invalid sequence index in safe
3493 ** the type system is now cleverer about negations of numeric
3494 types, and consequently understands the BIGNUM and RATIO types
3496 ** the type system is now cleverer about the interaction between
3497 INTEGER and RATIO types: while bugs still remain, many more
3498 cases are accurately computed;
3499 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3500 if it is in the last clause;
3501 ** CONSTANTLY now correctly returns a side-effect-free function in
3503 ** DECLARE is no longer treated as a special-operator; in
3504 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3505 * incremented fasl file version number due to the change in the
3506 DEFSTRUCT-SLOT-DESCRIPTION structure.
3508 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3509 * minor incompatible change: code processed by the "interpreter" or
3510 EVAL now has a compilation optimization policy of (DEBUG 2)
3511 (changed from (DEBUG 1)) to improve debuggability of interactive
3512 development, and to allow the use of the debug RETURN command in
3514 * an experimental implementation of the RETURN command for the
3515 debugger has been included. (thanks to Frederik Kuivinen)
3516 * fixed bug 62: constraints were not propagated into a loop.
3517 * fixed bug in embedded calls of SORT (reported and investigated by
3519 * fixed some bugs revealed by Paul Dietz' test suite:
3520 ** printing and reading of arrays with some dimensions having
3521 length 0 (thanks to Gerd Moellmann);
3522 ** BOA constructor with &AUX argument without a default value does
3523 not cause a type error;
3524 ** CONSTANTP now returns true for all self-evaluating objects.
3526 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3527 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3528 accessors that are related by inheritance, as specified in the
3529 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3530 Valtteri Vuorikoski)
3531 * The compiler is now able to inline functions that were defined in
3532 a complex lexical environment (e.g. inside a MACROLET).
3533 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3535 * Support for the upcoming FreeBSD-5.0 release has been included.
3536 (thanks to Dag-Erling Smorgrav)
3537 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3538 effect when it is not in a toplevel context.
3539 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3540 stand a better chance of being correct. (thanks to Gerd
3542 * fixed bug in COERCE, which now signals an error on coercing a
3543 rational to a bounded real type which excludes the expected
3545 * The compiler is now able to derive types more accurately from the
3546 COERCE and COMPILE functions.
3547 * fixed bug 223: functional binding is considered to be constant
3548 only for symbols in the CL package.
3549 * fixed bug 231: SETQ did not check the type of a variable being set
3550 (reported by Robert E. Brown)
3551 * A new optimization for MAKE-INSTANCE has been included, fixing
3552 various bugs (including relating to :ALLOCATION :CLASS slots and
3553 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3555 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3556 ** As required by ANSI, LOOP now disallows anonymous collection
3557 clauses such as COLLECT I in conjunction with aggregate boolean
3558 clauses such as THEREIS (= I 1);
3559 ** LOOP now signals an error when any variable is reused in the
3560 same loop (including the potentially useful construct analogous
3561 to WITH A = 1 WITH A = (1+ A);
3562 ** IT is only a special loop symbol within the first clause of a
3563 conditional loop clause;
3564 ** LOOP with a typed iteration variable over a hashtable now
3565 signals a type error iff it should.
3566 * fixed some other bugs revealed by Paul Dietz' test suite:
3567 ** FILE-STREAM now names the class previously known as FD-STREAM;
3568 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3569 argument) no longer signals an error;
3570 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3571 of the slot symbol, rather than using the current package
3572 ((:CONC-NAME "") continues to intern the slot's name in the
3574 * incremented fasl file version number, because of the incompatible
3575 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3576 of the new implementation of DEFINE-COMPILER-MACRO.
3578 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3579 * Support for building SBCL for MIPS platforms running in
3580 little-endian mode has now been checked in, and basic
3581 functionality on said platforms verified.
3582 * minor incompatible change: PCL now records the pathname of a file
3583 in which methods and the like are defined, rather than its
3585 * minor incompatible change: TRUENAME now considers the truename of
3586 a file naming a directory to be the pathname with :DIRECTORY
3587 component indicating that directory.
3588 * minor incompatible change: a NAMED clause in the extended form of
3589 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3590 reason for the previous behaviour is unclear.
3591 * more systematization and improvement of CLOS and MOP conformance
3592 in PCL (thanks to Gerd Moellman and Pierre Mai):
3593 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3595 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3596 primary methods with no specializers;
3597 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3599 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3600 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3601 FORWARD-REFERENCED-CLASSes; error reporting on
3602 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3604 ** SXHASH on CLOS instances now uses a slot internal to the
3605 instance to return different numbers on distinct instances,
3606 while preserving the same return value through invocations of
3608 ** DEFMETHOD signals errors when methods with longer incongruent
3609 lambda lists are added to generic functions;
3610 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3611 CLASS, as specified in AMOP;
3612 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3613 on the order returned by the primary method for classes of
3614 class STANDARD-CLASS;
3615 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3616 * fixed some bugs shown by Paul Dietz' test suite:
3617 ** DOLIST puts its body in TAGBODY;
3618 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3620 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3621 value producing form;
3622 ** if more variables are given to PROGV than values, extra
3623 variables are bound and made to have no value;
3624 ** NSUBSTITUTE on list arguments gets the right answer with
3626 ** ELT signals an error of type TYPE-ERROR when the index argument
3627 is not a valid sequence index;
3628 ** LOOP signals (at macroexpansion time) an error of type
3629 PROGRAM-ERROR when duplicate variable names are found;
3630 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3631 ** FUNCALL of special-operators now cause an error of type
3633 ** PSETQ now works as required in the presence of side-effecting
3634 symbol-macro places;
3635 ** NCONC accepts any object as its last argument;
3636 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3638 ** loop-for-as-package does not require a package to be explicitely
3640 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3642 * fixed bug 166: compiler preserves "there is a way to go"
3643 invariant when deleting code.
3644 * fixed bug 172: macro lambda lists with required arguments after
3645 &REST arguments now cause an error to be signalled. (thanks to
3647 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3648 bug. (thanks to Matthew Danish)
3649 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3651 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3652 arguments are lexically rebound. (thanks to Gerd Moellmann and
3654 * fixed bug 194: error messages are now more informative when there
3655 is no primary method applicable in a call to a generic
3656 function. (thanks to Gerd Moellmann)
3657 * fixed bug in command line argument checking (thanks to Julian
3659 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3660 (thanks to Matthew Danish)
3661 * incremented fasl file version number, because of the
3662 SXHASH-related changes in the layout of CLOS data structures
3664 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3665 * minor incompatible change: The runtime (the Unix executable named
3666 "sbcl") is now much pickier about the .core files it will load.
3667 Essentially it now requires .core files to descend from the same
3668 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3669 as the runtime does. (The intent is to prevent the crashes which
3670 can occur, and which can even be reported as mysterious failures,
3671 when people patch the sources or change the build parameters
3672 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3673 sbcl and .core files.)
3674 * fixed bug: VALUES-LIST is no longer optimized away.
3675 * fixed bug 142: The FFI conversion of C string values to Lisp
3676 string values no longer conses excessively. (thanks to Nathan
3677 Froyd porting Raymond Toy's fix to CMU CL)
3678 * began to systematize and improve MOP conformance in PCL (thanks to
3679 Nathan Froyd, Gerd Moellman and Pierre Mai):
3680 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3682 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3683 ** FINALIZE-INHERITANCE is now called on class finalization;
3684 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3685 argument precedence order.
3686 * fixed bug 202: The compiler no longer fails on functions whose
3687 derived types contradict their declared type.
3688 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3689 so it can be non-toplevel.
3690 * The fasl file version number has changed (because of the new
3691 implementation of DEFMACRO).
3692 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3693 safe code, that any length requirement by their type-specifier
3694 argument is valid. The exceptions to this are described in bug
3696 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3697 functions now check the types of their inputs as required by ANSI.
3698 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3699 introduced symbol is DECLAREd to be SPECIAL.
3700 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3701 * fixed bug: :COUNT argument to sequence functions may be negative
3702 * fixed bug: body of DO-SYMBOLS may contain declarations
3703 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3704 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3705 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3706 symbol macro only once
3707 * fixed printing of call frame when argument list is unavailable
3708 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3709 * compiler no longer signals WARNING on unknown keyword
3712 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3713 * A beta-quality port to the mips architecture running Linux,
3714 based on the old CMUCL backend, has been made. It has been tested
3715 on a big-endian kernel, and works sufficiently well to be able to
3716 rebuild itself; it has not been tested in little-endian mode.
3717 * fixed an inconsistency between gencgc.c and purify.c which made
3718 dumping/loading .core files unreliable
3719 * fixed bug 120a: The compiler now deals correctly with IFs where
3720 the consequent is the same as the alternative, instead of
3721 misderiving the return type. (thanks to Alexey Dejneka)
3722 * fixed bug 113: Logical pathnames are now dumpable (the logical
3723 host is resolved at load-time, throwing an error if it is not
3725 * fixed bug 174: FORMAT's error message is slightly clearer when a
3726 non-printing character is used in a format directive.
3727 * fixed several bugs in compiler checking of type declarations, i.e.
3728 violations of the Python "declarations are assertions" principle
3729 (thanks to Alexey Dejneka)
3730 * fixed several bugs in PCL's error checking (thanks to Gerd
3732 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3734 * fixed bug in compilation of functions as first class values
3735 (thanks to Antonio Martinez-Shotton)
3736 * The compiler's handling TYPE-ERRORs which it can prove will
3737 inevitably happen at runtime has been cleaned up and corrected
3738 in several ways. (thanks to Alexey Dejneka)
3739 * improved argument type checking for various basic arithmetic
3740 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3741 lavished on them in the past that they can be compiled in many
3742 ways in different special cases
3743 * fixed bug 181: compiler checks validity of user supplied type
3745 * cleaned up code flushing in optimization: Function calls which
3746 should signal errors for safety purposes (e.g. which ANSI says
3747 should signal errors when their arguments are of incorrect type)
3748 are no longer optimized away.
3749 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3750 * incremented fasl file version number, because changes in the
3751 implementation of sequence functions like COERCE caused
3752 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3753 in old inline expansions) to become undefined. (Actually these
3754 changes were later undone, so we might very well be binary
3755 compatible with 0.7.7 after all, but leaving the version number
3756 incremented seemed like the simplest and most conservative
3759 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3760 * An alpha-quality port to the parisc architecture running Linux,
3761 based on the old CMUCL backend, has been made. This, even more so
3762 than the other backends, should be considered still a work in
3763 progress; known problems include that the Linux kernel in 64-bit
3764 mode does not propagate the correct sigcontext structure to
3765 userspace, and consequently SBCL on a parisc64 kernel will not
3767 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3768 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3769 suppressed.) Also now that the compiler is looking at declarations
3770 in the environment, it checks optimization declarations as well,
3771 and suppresses inlining when (> DEBUG SPEED).
3772 * More fixes have been made to treatment of floating point exception
3773 treatment and other Unix signals. In particular, floating point
3774 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3775 * The detection and handling of control stack exhaustion (infinite
3776 or very deeply nested recursion) has changed. Stack exhaustion
3777 detection is now done by write-protecting pages at the OS level
3778 and applies at all optimization settings; when found, a
3779 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3780 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3781 be caught using IGNORE-ERRORS.
3782 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3783 correctly when transforming recursive LABELS functions to LETs.
3784 (thanks to Alexey Dejneka)
3785 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3786 that are names of constants or global variables.
3787 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3788 alien routines with docstrings.
3789 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3790 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3792 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3793 (thanks to Eric Marsden)
3794 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3795 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3796 * Bug fix: The SPARC backend can now compile functions involving
3797 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3798 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3799 to a functions expecting a PATHNAME-DESIGNATOR.
3800 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3801 lambda lists. (thanks to Alexey Dejneka)
3802 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3803 functions so that EXPORTing the name of the class doesn't cause
3804 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3805 to Antonio Martinez for reporting this)
3806 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3807 constant-folded without failing an assertion. (thanks to Einar
3808 Floystad Dorum for reporting this)
3809 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3810 types are now dealt with more correctly by the compiler.
3811 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3812 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3813 behaviour analogous to RENAME-FILE. This puts its behaviour more
3814 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3816 * The fasl file version number has changed again. (because of the
3817 bug fix involving the names of PCL MAKE-INSTANCE functions)
3819 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3820 * bug fix: Floating point exceptions are treated much more
3821 consistently on the x86/Linux and PPC/Linux platforms.
3822 * Array initialization with :INITIAL-ELEMENT is now much faster for
3823 cases when the compiler cannot open code the array creation, but
3824 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3825 array accesses have also seen a speed increase.
3826 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3827 specified. (This was at the root of some bad interactions between
3828 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3830 * bug fix: Internal error arguments for undefined functions are now
3831 computed correctly on the PPC/Linux platform.
3832 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3833 Raymond Toy's patch for CMU CL)
3834 * Support for the Solaris 9 operating environment has been included
3835 (thanks to Daniel Merritt)
3836 * A very ugly but hopefully complete draft of the missing FFI chapter
3837 of the manual has been created by reformatting the corresponding
3838 CMU CL manual chapter into (currently very ugly and incoherent)
3839 DocBook and bringing it up to date for SBCL behavior. Thus, the
3840 manual is now essentially complete, at least by my extreme
3841 once-and-only-once standards, whereby it's acceptable to refer to
3842 the doc strings of SB-EXT functions as the primary documentation.
3843 * The fasl file version number has changed again, due to cleanup of
3844 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3845 is no longer a static symbol.)
3847 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3848 * SBCL now builds with OpenMCL (version 0.12) as the
3849 cross-compilation host; also, more progress has been made toward
3850 bootstrapping under CLISP.
3851 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3853 * bug 158 fixed: The compiler can now deal with integer loop
3854 increments different from 1; fixing this turned out also to fix
3856 * bug 169 fixed: no more bogus warnings about using lexical bindings
3857 despite the presence of perfectly good SPECIAL declarations (thanks
3858 to David Lichteblau)
3859 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3860 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3861 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3863 * bug 180 fixed: Method combination specifications no longer ignore
3864 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3865 * bug fix: Structure type predicate functions now check their argument
3866 count as they should.
3867 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3868 correctly. (thanks to Pierre Mai)
3869 * minor incompatible change: The --noprogrammer option is deprecated
3870 in favor of the new --disable-debugger option, which is very similar.
3871 (The major difference is that it takes effect at a slightly different
3872 time at startup, causing handling of errors in --sysinit and
3873 --userinit files will be affected differently.) The
3874 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3875 been added to allow this functionality to be controlled from ordinary
3876 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3877 maintainers, who might want to run non-interactive scripts to
3878 build SBCL cores which will later be used interactively.)
3879 * minor incompatible change: The LOAD function no longer, when given
3880 a wild pathname to load, loads all files matching that pathname.
3881 Instead, an error of type FILE-ERROR is signalled.
3883 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3884 * bug 147 fixed: The compiler preserves its block link/count
3885 invariants more correctly now so that it doesn't crash. (thanks
3887 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3889 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3890 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3891 no-value-for-this-character as NIL (as specified by ANSI).
3892 * HOST-NAMESTRING on physical pathnames now returns a string that is
3893 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3894 (thanks to Christophe Rhodes)
3895 * The Alpha port handles icache flushing more correctly. (thanks to
3897 * More progress has been made toward bootstrapping under CLISP. (thanks
3898 to Christophe Rhodes)
3899 * The fasl file format has changed again, because dynamic loading
3900 on OpenBSD (which has non-ELF object files) motivated some cleanups
3901 in the way that foreign symbols are transformed and passed around.
3902 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3903 is no longer treated as whitespace by the reader, but instead as
3904 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3905 |A
\7fB|, instead of A as it used to.
3907 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3908 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3909 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3910 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3911 this as of 0.7.1.45, but was left out of the previous news section
3912 (thanks to Dan Barlow)
3913 * SBCL now runs on the Solaris operating system on SPARC architectures
3914 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3915 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3916 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3917 * SPARC backend cleanups, allowing builds of cores optimized for V8
3918 and V9 SPARCS, and also emission of code targeted to a particular
3919 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3921 * SBCL is closer to bootstrapping under CLISP, thanks to various
3922 fixes by Christophe Rhodes.
3923 * The fasl file format has changed again, to allow the compiler's
3924 INFO database to support symbol macros.
3925 * The user manual (in doc/) is formatted into HTML more nicely.
3926 (thanks to coreythomas)
3927 * The system is smarter about SUBTYPEP relationships, especially
3928 those involving NOT types (including types such as ATOM which are
3929 represented internally using NOT types). Thus SUBTYPEP is less
3930 likely to return (VALUES NIL NIL) in general, and in particular
3931 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3933 * The fasl file format has changed again, because the internal
3934 representation of types now includes a new slot to support the new
3935 SUBTYPEP-of-NOT-types logic.
3936 * (not a change in the main branch of SBCL, but a related prototype
3937 which can hopefully be merged into the main branch of SBCL in the
3938 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3939 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3940 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3941 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3942 dispatch macro character combinations. (thanks to Alexey Dejneka)
3943 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3944 that superficially look like logical namestrings correctly.
3945 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3947 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3948 default supplied-p) for &optional and &key arguments. (thanks to
3951 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3952 * incompatible change: The compiler is now less aggressive about
3953 tail call optimization, doing it only when (> SPACE DEBUG) or
3954 (> SPEED DEBUG). (This is an incompatible change because there are
3955 programs which relied on the old CMU-CL-style behavior to optimize
3956 away their unbounded recursion which will now die of stack overflow.)
3957 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3958 for non-GENCGC systems has been increased to 20M (since that
3959 seems much closer to the likely performance optimum for modern
3960 systems than the old 4M value was)
3961 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3962 and *DEBUG-PRINT-LEVEL*
3963 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3964 of CMU CL's support for SPARC, and various endianness and other
3965 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3966 * new syntactic sugar for the Unix command line: --load foo.bar is now
3967 an alternate notation for --eval '(load "foo.bar")'.
3969 ** The system now detects stack overflow and handles it gracefully,
3970 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3971 optimization settings. (This is a good thing in general, and
3972 its introduction in this version should be particularly timely
3973 for anyone whose code fails because of suppression of tail
3975 ** The system now hunts for the C variable "environ" in a more
3976 devious way, to avoid segfaults when the C library version differs
3977 between compile time and run time. (thanks to Christophe Rhodes)
3978 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3979 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3980 ** The compiler no longer issues bogus style warnings for undefined
3981 classes in the same source file as the DEFCLASSes which defined
3982 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3984 ** fixes in CONDITION class precedence list for undefined function
3985 errors (thanks to Alexei Dejneka)
3986 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3987 correctly. (thanks to Dan Barlow)
3988 ** portability fixes aiming at bootstrapping under CLISP (thanks
3989 to Dave McDonald and Christophe Rhodes)
3990 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3991 ** fixes in type translation and and type inference (thanks to
3993 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3994 ** various fixes in the new ports (thanks to Dan Barlow)
3995 * several changes related to debugging:
3996 ** suppression of tail recursion, as noted above
3997 ** stack overflow detection, as noted above
3998 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3999 is now the default. (For some time encapsulation has been more
4000 reliable than the breakpoint-based :ENCAPSULATE NIL
4001 implementation, at least on X86 systems; and I just noticed that
4002 encapsulation also seems closer to the spirit of the ANSI
4005 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4007 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4008 up properly again. (There was a packaging bug in 0.7.0 which
4009 left their definitions in SB-SYS::LOAD-FOREIGN and
4010 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4011 vital for most things which interface to C-level interfaces,
4012 like extensions working with sockets or databases or
4013 Perl-compatible regexes or whatever, and the need to fix
4014 this bug is the main reason that 0.7.1 was released so
4016 ** DEFGENERIC is now choosier about the methods it redefines, so that
4017 reLOADing a previously-LOADed file containing DEFGENERICs does
4018 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4019 cycle now works as it should. (thanks to Alexey Dejneka)
4020 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4021 fixed by Christophe Rhodes. (He actually submitted this patch
4022 months ago, and I delayed until after 0.7.0.)
4023 ** Bug 111 (internal compiler confusion about runtime checks on
4024 FUNCTION types) was fixed by Alexey Dejneka.
4025 * Some internal cleanups (getting rid of variables which aren't
4026 needed now that the byte interpreter is gone) caused the fasl
4027 file format number to change again.
4029 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4030 * major incompatible change: The default fasl file extension, i.e. the
4031 default extension for files produced by COMPILE-FILE, has changed
4032 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4034 ** There are many changes in the implementation of the compiler.
4035 SBCL is now essentially a compiler-only implementation of ANSI
4036 Common Lisp. EVAL still "interprets" a few special cases, but
4037 almost all the interesting cases are handled by creating
4038 a LAMBDA expression, calling COMPILE on it, then calling
4039 FUNCALL on the result.
4040 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4041 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4042 Since the code is newer, there might still be some new bugs
4043 (though not as many as before Martin Atzmueller's fixes:-). But
4044 the new code is substantially simpler and clearer, and hopefully
4045 any remaining bugs will be simpler, less fundamental, and more
4046 fixable then the bugs in the old code.
4047 ** The revised compiler is still a little unsteady on its feet.
4049 *** The debugging information it produces (particularly the names
4050 of FUNCTION objects) is sometimes much less useful than what
4051 the old compiler produced.
4052 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4053 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4054 within a MACROLET) has been temporarily weakened.
4055 ** There are new compiler optimizations for various functions:
4056 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4057 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4058 *** the math functions TRUNCATE, FLOOR, and CEILING
4059 *** the function-of-all-trades COERCE
4060 Mostly these should be transparent, but there's one
4061 potentially-annoying problem (bug 117): when the compiler
4062 inline-expands a function and does type analysis on the result,
4063 it can create control paths which have type mismatches, and
4064 when it can't prove that those control paths aren't taken,
4065 it will issue WARNINGs about the type mismatches. This is
4066 a particular problem in practice for the new sequence functions.
4067 It's not clear how this should be fixed, and for now, a
4068 workaround is given in the entry for 117 in the BUGS file.
4069 ** (Because of the interaction between the two previous items --
4070 occasional inlining problems and new inline expansions -- some
4071 of the new sequence function optimizations won't really kick in
4072 completely until debugging information, and then inlining, are
4073 straightened out in some future version.)
4074 * minor incompatible changes:
4075 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4076 DIRECTORY no longer implicitly promotes NIL slots of its
4077 pathname argument to :WILD. In particular, when you ask for the
4078 contents of a directory (which you used to be able to do without
4079 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4080 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4081 ** changes in behavior that ANSI explicitly defines to be
4082 implementation dependent:
4083 *** The new compiler-only implementation still conforms with ANSI,
4084 but acts a little different than before. Besides the obvious
4085 changes in performance tradeoffs (that the cost per form passed
4086 to EVAL has gone up, and the cost per form executed by EVAL
4087 has gone down), the behavior of the system changes a little
4088 because there are no longer any interpreted function objects.
4089 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4090 e.g. doing COMPILE on the output of interactive DEFUN is
4092 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4094 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4095 has changed from (:CL) to NIL.
4096 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4097 e.g. #\Newline and #\Tab, don't have names specified in the
4098 ANSI Common Lisp standard, is now based on their ASCII symbolic
4099 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4100 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4101 are no longer used for output.
4102 ** changes in internal implementation constants:
4103 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4104 4 million. (If your application spends a lot of time GCing and
4105 you have a lot of RAM, you might want to experiment with
4106 increasing it even more.)
4107 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4108 However, almost all old code should still continue to work without
4109 immediate update, as SB-C-CALL is now a (deprecated) nickname
4111 ** Old operator names in the style DEF-FOO are now deprecated in
4112 favor of new corresponding names DEFINE-FOO, for consistency with
4113 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4114 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4115 internal symbols, but a few supported extensions like
4116 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4117 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4118 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4119 etc. as you get deeper into recursive calls to the debugger
4120 command loop, instead of the old "5]", "5]]", "5]]]"
4121 sequence. (I was motivated to do this when squabbles between
4122 ILISP and SBCL left me very deeply nested in the debugger. In the
4123 short term, this change will probably provoke more ILISP/SBCL
4124 squabbles, but hopefully it will be an improvement in the long run.)
4125 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4126 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4127 function, since declaiming return types involving aliens is
4128 (1) annoyingly messy to do by hand and (2) vital to efficient
4129 compilation of code which calls such functions.
4130 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4131 longer reexported by the SB-EXT package. They're solely useful
4132 for alien code, so it seems more logical that you should get
4133 them from the SB-ALIEN package, not in SB-EXT.
4134 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4135 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4136 features. Instead, the code that they used to control is always
4137 built into the system.
4138 * many other bug fixes
4139 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4140 advantage of the new EVAL-WHEN stuff and to clean them up in
4141 general, and they are now more ANSI-compliant in a number of
4142 ways. Martin Atzmueller is responsible for a lot of this.
4143 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4145 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4146 *** correct ERROR type for various file operations
4147 *** some fixes for Lisp streams
4148 *** DEFMETHOD syntax checking
4149 *** changing old weird representation of debug information as
4150 strings (which, among their other deficiencies, don't transform
4151 correctly when you rename packages, and don't change their
4152 print representation when you change things like *PACKAGE*
4153 and *PRINT-LENGTH*) to symbols and lists of symbols
4154 He also made several improvements and fixed several bugs in DESCRIBE.
4155 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4157 *** misbehavior of WRITE-STRING/WRITE-LINE
4158 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4159 and several other LOOP problems as well
4160 *** DIRECTORY when similar filenames are present
4161 *** DEFGENERIC with :METHOD options
4162 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4163 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4164 *** argument ordering in FIND with :TEST option
4165 *** mishandled package designator argument in APROPOS-LIST
4166 *** various problems in the backquote readmacro
4167 *** a bug in APROPOS
4168 *** probably some others that I'm not describing very well here,
4169 since the CVS log documents them by reference to sbcl-devel
4170 messages, and the SourceForge archives aren't working well.:-(
4171 ** Dan Barlow improved the Alpha port (and is making progress on the
4172 PPC port, for those of you who think different).
4173 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4174 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4175 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4176 continues to work on the SPARC port (for those of you in a position
4177 to look down upon our little PC-compatible boxes from a great height).
4178 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4179 and uses that copy, rather than the current dynamic value, when
4180 it's trying to decide whether to truncate output. Thus e.g.
4181 (let ((*print-lines* 50))
4182 (pprint-logical-block (stream nil)
4184 (let ((*print-lines* 8))
4185 (print (aref possiblybigthings i) stream)))))
4186 should now truncate the logical block only at 50 lines, instead of
4187 often truncating it at 8 lines, as it did before.
4188 * The doc/cmucl/ directory, containing old CMU CL documentation
4189 from the time of the fork, is no longer part of the base system.
4190 SourceForge has shut down its anonymous FTP service, and with it
4191 my original plan for distributing the old CMU CL documentation
4192 there. For now, if you need these files you can download an old
4193 SBCL source release and extract them from it.
4194 * The fasl file version number changed again, for dozens of reasons,
4195 some of which are apparent above.
4197 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4198 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4199 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4200 patch, so that DISASSEMBLE output is much nicer.
4201 * The code in the SB-PROFILE package now seems reasonably stable.
4202 I still haven't decided what the final interface should look like
4203 (I'd like PROFILE to interact cleanly with TRACE, since both
4204 facilities use function encapsulation) but if you have a need
4205 for profiling now, you can probably use it successfully with
4206 the current CMU-CL-style interface.
4207 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4208 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4209 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4210 link now returns the dangling link itself, and for similar
4211 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4212 link itself. (In these cases the old code signalled an error and
4213 looped endlessly, respectively.) Thus, DIRECTORY now works even
4214 in the presence of dangling and cyclic symbolic links.
4215 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4216 is now a supported extension again, since the consensus on
4217 sbcl-devel was that it can be useful for ordinary development
4218 work, not just for debugging SBCL itself.
4219 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4220 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4221 that currently-defined functions might be redefined later with
4222 different return types.
4223 * Hash tables can be printed readably, as inspired by CMU CL code
4224 of Eric Marsden and SBCL code of Martin Atzmueller.
4225 * better error handling in CLOS method combination, thanks to
4226 Martin Atzmueller porting Pierre Mai's CMU CL patches
4227 * more overflow fixes for >16Mbyte I/O buffers
4228 * A bug in READ has been fixed, so that now a single Ctrl-D
4229 character suffices to cause end-of-file on character streams.
4230 In particular, now you only need one Ctrl-D at the command
4231 line (not two) to exit SBCL.
4232 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4234 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4235 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4236 does the right thing.
4237 * The implementation of some type tests, especially for CONDITION
4238 types, is now tidier and maybe faster, due to CMU CL code
4239 originally by Douglas Crosher, ported by Martin Atzmueller.
4240 * Some math functions have been fixed, and there are new
4241 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4242 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4243 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4244 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4245 likely to be built into sbcl-0.7.0.)
4246 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4247 CL, ported to SBCL by Martin Atzmueller)
4248 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4249 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4250 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4251 * There's a new slam.sh hack to shorten the edit/compile/debug
4252 cycle for low-level changes to SBCL itself, and a new
4253 :SB-AFTER-XC-CORE target feature to control the generation of
4254 the after-xc.core file needed by slam.sh.
4255 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4256 COMPILE-FILE is no longer supported, so that now every function
4257 gets an entry point, so that block compilation looks a little
4258 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4259 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4260 returns the number of bytes consed since the system started,
4261 rather than the number consed since the first time the function
4262 was called. (The new definition parallels ANSI functions like
4263 CL:GET-INTERNAL-RUN-TIME.)
4264 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4265 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4266 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4267 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4268 * Fasl file version numbers are now independent of the target CPU,
4269 since historically most system changes which required version
4270 number changes have affected all CPUs equally. Similarly,
4271 the byte fasl file version is now equal to the ordinary
4274 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4275 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4276 is no longer recognized. I apologize for this, because it was
4277 listed in SB-EXT as a supported extension, but I found that
4278 its existing behavior was poorly specified, as well as incorrectly
4279 specified, and it looked like too much of a mess to straighten it
4280 out. I have enough on my hands trying to get ANSI stuff to work..
4281 * many patches ported from CMU CL by Martin Atzmueller, with
4282 half a dozen bug fixes in pretty-printing and the debugger, and
4283 half a dozen others elsewhere
4284 * fixed bug 13: Floating point infinities are now supported again.
4285 They might still be a little bit flaky, but thanks to bug reports
4286 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4287 as flaky as they were.
4288 * The --noprogrammer command line option is now supported. (Its
4289 behavior is slightly different in detail from what the old man
4290 page claimed it would do, but it's still appropriate under the
4291 same circumstances that the man page talks about.)
4292 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4293 are now supported, and enabled by default. Thus, the compiler can
4294 handle many floating point and complex operations much less
4295 inefficiently. (Thus e.g. you can implement a complex FFT
4297 * The compiler now detects type mismatches between DECLAIM FTYPE
4298 and DEFUN better, and implements CHECK-TYPE more correctly, and
4299 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4300 thanks to patches from Martin Atzmueller.
4301 * various fixes to make the cross-compiler more portable to
4302 ANSI-conforming-but-different cross-compilation hosts (notably
4303 Lispworks for Windows, following bug reports from Arthur Lemmens)
4304 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4305 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4306 fixed thanks to Pierre Mai's CMU CL patches.
4307 * fixes to keep the system from overflowing internal counters when
4308 it tries to use i/o buffers larger than 16M bytes
4309 * fixed bug 45a: Various internal functions required to support
4310 complex special functions have been merged from CMU CL sources.
4311 (When I was first setting up SBCL, I misunderstood a compile-time
4312 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4313 * improved support for type intersection and union, fixing bug 12
4314 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4315 more obscure bugs as well
4316 * some steps toward byte-compiling non-performance-critical
4317 parts of the system, courtesy of patches from Martin Atzmueller
4318 * Christophe Rhodes has made some debian packages of sbcl at
4319 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4320 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4321 stable, but are nonetheless usable. When he's ready, I'd be happy
4322 to add them to the SourceForge "File Releases" section. (And if
4323 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4324 * new fasl file format version number (because of changes in
4325 internal representation of (OR ..) types to accommodate the new
4326 support for (AND ..) types, among other things)
4328 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4329 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4331 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4333 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4334 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4335 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4336 * DESCRIBE now works on structure objects again.
4337 * Most function call argument type mismatches are now handled as
4338 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4339 know whether the function will be redefined before the call is
4340 executed. (The compiler could flag local calls with full WARNINGs,
4341 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4342 it doesn't keep track of enough information to know whether calls
4343 are local in this sense.)
4344 * Compiler output is now more verbose, with messages truncated
4345 later than before. (There should be some supported way for users
4346 to override the default verbosity, but I haven't decided how to
4347 provide it yet, so this behavior is still controlled by the internal
4348 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4349 src/compiler/ir1util.lisp.)
4350 * Fasl file format version numbers have increased again, because
4351 support for the Gray streams extension changes the layout of the
4352 system's STREAM objects.
4353 * The Gray subclassable streams extension now works, thanks to a
4354 patch from Martin Atzmueller.
4355 * The full LOAD-FOREIGN extension (not just the primitive
4356 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4357 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4358 but like most other programs, it defaults to copying the Unix
4359 environment from the original process instead of starting the
4360 new process in an empty environment.
4361 * Extensions which manipulate the Unix environment now support
4362 an :ENVIRONMENT keyword option which doesn't smash case or
4363 do other bad things. The CMU-CL-style :ENV option is retained
4364 for porting convenience.
4365 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4366 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4368 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4370 * A patch from Martin Atzmueller seems to have solved the SIGINT
4371 problem, and as far as we know, signal-handling now works cleanly.
4372 (If you find any new bugs, please report them!)
4373 * The system no longer defaults Lisp source file names to types
4374 ".l", ".cl", or ".lsp", but only to ".lisp".
4375 * The compiler no longer uses special default file extensions for
4376 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4377 seems to expect a single default extension for all compiled code,
4378 and there's no compelling reason to try to stretch the standard
4379 to allow two different extensions.) Instead, byte-compiled files
4380 default to the same extension as native-compiled files.
4381 * Fasl file format version numbers have increased again, because
4382 a rearrangement of internal implementation packages made some
4383 dumped symbols in old fasl files unreadable in new cores.
4384 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4385 many fewer weird special cases.
4386 * Bug #17 (differing COMPILE-FILE behavior between logical and
4387 physical pathnames) has been fixed, and some related misbehavior too,
4388 thanks to a patch from Martin Atzmueller.
4389 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4390 by Tim Moore, ported to SBCL by Martin Atzmueller.
4391 * Martin Atzmueller fixed several filesystem-related problems,
4392 including bug #36, in part by porting CMU CL patches, which were
4393 written in part by Paul Werkowski.
4394 * More compiler warnings in src/runtime/ are gone, thanks to
4395 more patches from Martin Atzmueller.
4396 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4399 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4401 * DESCRIBE now works on CONDITION objects.
4402 * The debugger now handles errors which arise when trying to print
4403 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4405 * The build system now uses an additional file, customize-target-features.lisp,
4406 to allow local modifications to the target *FEATURES* list. (The point of
4407 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4408 debugging features enabled, without having to worry about propagating it
4409 into everyone's system when I do a "cvs update".) When no
4410 customize-target-features.lisp file exists, the target *FEATURES* list
4411 should be constructed the same way as before.
4412 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4413 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4414 warn about behavior which is undefined under the ANSI spec. Note: This
4415 is specified by ANSI, but it's not very popular with programmers.
4416 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4417 macro in the SBCL sources for an example of a workaround which you
4418 might use to make portable ANSI-standard code which does what you want.
4419 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4420 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4421 when it's used as a non-toplevel form. (This is required in order
4422 to implement the DEFCONSTANT-EQX macro.)
4423 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4424 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4425 funny things, due to bugs in the implementation of EVAL-WHEN
4426 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4427 non-toplevel DEFCONSTANTs are uncommon.)
4428 * The core file version number and fasl file version number have been
4429 incremented, because the old noncompliant DEFCONSTANT behavior involved
4430 calling functions which no longer exist, and because I also took the
4431 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4432 * fixed bug 1 (error handling before read-eval-print loop starts), and
4433 redid debugger restarts and related debugger commands somewhat while
4435 ** The QUIT debugger command is gone, since it did something
4436 rather different than the SB-EXT:QUIT command, and since it never
4437 worked properly outside the main toplevel read/eval/print loop.
4438 Invoking the new TOPLEVEL restart provides the same functionality.
4439 ** The GO debugger command is also gone, since you can just invoke
4440 the CONTINUE restart directly instead.
4441 ** The TOP debugger command is also gone, since it's redundant with the
4442 FRAME 0 command, and since it interfered with abbreviations for the
4444 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4446 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4447 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4448 some porting work by Martin Atzmueller)
4449 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4450 with a boatload of patches which he ported to SBCL. Now that those
4452 ** The system tries to make sure that its low-priority messages
4453 are prefixed by semicolons, to help people who like to use
4454 syntax highlighting in their ILISP buffer. (This patch
4455 was originally due to Raymond Toy.)
4456 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4457 patches originally written by Raymond Toy.
4458 ** The compiler understands coercion between single-value and
4459 multiple-VALUES type expressions better, getting rid of some very
4460 weird behavior, thanks to patches originally by Robert MacLachlan
4461 and Douglas Crosher.
4462 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4463 lambda lists, thanks to a patch originally by Pierre Mai.
4464 ** The system no longer bogusly warns about "abbreviated type
4466 ** The compiler gets less confused by inlining and RETURN-FROM,
4467 thanks to some patches originally by Tim Moore.
4468 ** The system no longer hangs when dumping circular lists to fasl
4469 files, thanks to a patch originally from Douglas Crosher.
4470 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4471 undefined function error.
4472 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4473 in structure slot initforms) for now, documented workaround instead:-|
4474 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4475 * fixed bug 5: added stubs for various Gray stream functions called
4476 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4477 installed, at least appropriate type errors are generated
4478 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4479 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4480 consistently in DEFMETHOD forms.
4481 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4482 it doesn't seem to affect SBCL after all
4483 * The C runtime system now builds with better optimization and many
4484 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4486 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4488 * The system is now under CVS at SourceForge (instead of the
4489 CVS repository on my home machine).
4490 * The new signal handling code has been tweaked to treat register
4491 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4492 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4493 downstream, e.g. in debug-int.lisp, has implicit dependencies
4494 on the unsignedness of integer representation of machine words,
4495 and that caused the system to bomb out with infinite regress
4496 when trying to recover from type errors involving signed values,
4497 e.g. (BUTLAST '(1 2 3) -1).)
4498 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4499 (This was one of the bugs Peter Van Eynde reported back in July.)
4500 * The system now uses code inspired by Colin Walters' O(N)
4501 implementation of MAP (from the cmucl-imp@cons.org mailing
4502 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4503 inline the MAP operation, and there is more than one
4504 sequence argument to the MAP call (so that it can't just
4505 do ETYPECASE once and for all based on the type of the
4506 single sequence argument). (The old non-inline implementation
4507 of the general M-argument sequence-of-length-N case required
4508 O(M*N*N) time when any of the sequence arguments were LISTs.)
4509 * The QUIT :UNIX-CODE keyword argument has been renamed to
4510 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4511 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4513 * Raymond Wiker's patches to port dynamic loading from Linux to
4514 FreeBSD have been added.
4515 * The BUGS file is now more nearly up to date, thanks in large part
4516 to Martin Atzmueller's review of it.
4517 * The debugger now flushes standard output streams before it begins
4518 its output ("debugger invoked" and so forth).
4519 * The core version number and fasl file version number have both
4520 been incremented, because of incompatible changes in the layout
4522 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4523 used to not be called for a saved Lisp image.)
4524 * Martin Atzmueller's version of a patch to fix a compiler crash,
4525 as posted on sbcl-devel 13 September 2000, has been installed.
4526 * Instead of installing Martin Atzmueller's patch for the
4527 compiler transform for SUBSEQ, I deleted the compiler transform,
4528 and transforms for some similar consing operations.
4529 * A bug in signal handling which kept TRACE from working on OpenBSD
4531 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4532 away by constant folding
4533 * The system now defines its address space constants in one place
4534 (in the Lisp sources), and propagates them automatically elsewhere
4535 (through GENESIS and the sbcl.h file). Therefore, patching the
4536 address map is less unnecessarily tedious and error-prone. The
4537 Lisp names of address space constants have also been systematized.
4538 * CVS tags like dollar-Header-dollar have been removed from
4539 the sources, because they have never saved me trouble and
4540 they've been source of trouble working with patches and other
4541 diff-related operations.
4542 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4543 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4545 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4547 * The system has been ported to OpenBSD.
4548 * The system now compiles with a simple "sh make.sh" on the systems
4549 that it's supported on. I.e., now you no longer need to tweak
4550 text in the target-features.lisp-expr and symlinks in src/runtime/
4551 by hand, the make.sh takes care of it for you.
4552 * The system is no longer so grossly inefficient when compiling code
4553 involving vectors implemented as general (not simple) vectors (VECTOR T),
4554 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4555 which dares to use the various sequence functions on non-simple
4556 vectors, takes less of a performance hit.
4557 * There is now a primitive type predicate VECTOR-T-P
4558 to test for the (VECTOR T) type, so that e.g.
4559 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4560 can now be compiled with some semblance of efficiency. (The old code
4561 turned the type declaration into a full call to %TYPEP at runtime!)
4562 * AREF on (VECTOR T) is still not fast, since it's still compiled
4563 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4564 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4565 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4566 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4567 without making full calls to SUBTYPEP at runtime.
4568 (Some analogous efficiency issues for non-simple vectors specialized to
4569 element types other than T, or for non-simple multidimensional arrays,
4570 have not been addressed. They could almost certainly be handled the
4571 same way if anyone is motivated to do so.)
4572 * The changes in array handling break binary compatibility, so
4573 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4574 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4575 instead of (VALUES T T).
4576 * By following the instructions that Dan Barlow posted to sbcl-devel
4577 on 2 July 2000, I was able to enable primitive dynamic object
4578 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4579 functionality is not implemented (since it calls ld to resolve
4580 library references automatically, requiring RUN-PROGRAM for its
4581 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4582 try to resolve library references) is now supported.
4583 * The system now flushes the standard output streams when it terminates,
4584 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4585 them at several other probably-convenient times, e.g. in each pass of
4586 the toplevel read-eval-print loop, and after evaluating a form given
4587 as an "--eval" command-line option. (These changes were motivated by a
4588 discussion of stream flushing issues on cmucl-imp in August 2000.)
4589 * The source transform for TYPEP of array types no longer assumes
4590 that an array whose element type is a not-yet-defined type
4591 is implemented as an array of T, but instead punts, so that the
4592 type will be interpreted at runtime.
4593 * There is now some support for cross-compiling in make.sh: each of
4594 the phases of make.sh has its own script. (This should be transparent
4595 to people doing ordinary, non-cross-compile builds.)
4596 * Since my laptop doesn't have hundreds of megabytes of memory like
4597 my desktop machine, I became more motivated to do some items on
4598 my to-do list in order to reduce the size of the system a little:
4599 ** Arrange for various needed-only-at-cold-init things to be
4600 uninterned after cold init. To support this, those things have
4601 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4602 symbols with such names are now uninterned after cold init).
4603 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4604 fasl files for cold load.
4605 ** Remove the old compiler structure pooling code (which used to
4606 be conditional on the target feature :SB-ALLOC) completely.
4607 ** Redo the representation of some data in cold init to be more compact.
4608 (I also looked into supporting byte compiled code at bootstrap time,
4609 which would probably reduce the size of the system a lot, but that
4610 looked too complicated, so I punted for now.)
4611 * The maximum signal nesting depth in the src/runtime/ support code has
4612 been reduced from 4096 to 256. (I don't know any reason for the very
4613 large old value. If the new smaller value turns out to break something,
4614 I'll probably just bump it back up.)
4615 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4617 * Many, many bugs reported by Peter Van Eynde have been added to
4618 the BUGS list; some have even been fixed.
4619 * While enabling dynamic object file loading, I tried to make the
4620 code easier to understand, renaming various functions and variables
4621 with less ambiguous names, and changing some function calling
4622 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4623 * While trying to figure out how to do the OpenBSD port, I tried to
4624 clean up some of the code in src/runtime/. In particular, I dropped
4625 support for non-POSIX signal handling, added various comments,
4626 tweaked the code to reduce the number of compilation warnings, and
4627 renamed some files to increase consistency.
4628 * To support the new automatic configuration functionality in make.sh,
4629 the source file target-features.lisp-expr has been replaced with the
4630 source file base-target-features.lisp-expr and the machine-generated
4631 file local-target-features.lisp-expr.
4632 * fixed a stupid quoting error in make.sh so that using CMU CL
4633 "lisp -batch" as cross-compilation host works again
4635 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4637 * DESCRIBE no longer tries to call itself recursively to describe
4638 bound/fbound values, so that it no longer fails on symbols which are
4639 bound to themselves (like keywords, T, and NIL).
4640 * DESCRIBE now works on generic functions.
4641 * The printer now prints less-screwed-up representations of closures
4642 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4643 * A private symbol is used instead of the :EMPTY keyword previously
4644 used to mark empty slots in hash tables. Thus
4645 (DEFVAR *HT* (MAKE-HASH-TABLE))
4646 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4647 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4648 now does what ANSI says that it should. (You can still get
4649 similar noncompliant behavior if bang on the hash table
4650 implementation with all the symbols you get back from
4651 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4652 This breaks binary compatibility, since tests for equality to
4653 :EMPTY are wired into things like the macroexpansion of
4654 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4656 * There's now a minimal placeholder implementation for CL:STEP,
4657 as required by ANSI.
4658 * An obscure bug in the interaction of the normal compiler, the byte
4659 compiler, inlining, and structure predicates has been patched
4660 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4661 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4663 * Missing ordinary arguments in a macro call are now detected even
4664 when the macro lambda list contains &KEY or &REST.
4665 * The debugger no longer complains about encountering the top of the
4666 stack when you type "FRAME 0" to explicitly instruct it to go to
4667 the top of the stack. And it now prints the frame you request even
4668 if it's the current frame (instead of saying "You are here.").
4669 * As specified by ANSI, the system now always prints keywords
4670 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4672 * The default initial SIZE of HASH-TABLEs is now smaller.
4673 * Type information from CLOS class dispatch is now propagated
4674 into DEFMETHOD bodies, so that e.g.
4675 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4677 is now basically equivalent to
4678 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4679 (DECLARE (TYPE SINGLE-FLOAT X))
4681 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4682 operation, without having to do run-time type dispatch.
4683 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4684 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4685 * Since I don't seem to be making big file reorganizations very often
4686 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4687 is overflowing my ability to conveniently back them up), I've finally
4688 checked the system into CVS. (The CVS repository is on my home system,
4689 not at SourceForge -- putting it on SourceForge might come later.)
4690 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4691 high-level GC-NOTIFY-FOO functions send their output. (There's
4692 still very little control of where low-level verbose GC functions
4693 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4694 less than it used to -- the GC-NOTIFY-FOO functions are now under
4695 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4696 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4697 in only one place in the source code, and propagates it automatically
4698 everywhere that it's needed. Thus e.g. when I bump the version from
4699 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4700 * The C source files now include boilerplate legalese and documentation
4701 at the head of each file (just as the Lisp source files already did).
4702 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4703 to his page will be replaced with a link to his new CLiki service.
4705 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4707 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4708 * The build process now looks for GNU make under the default name "gmake",
4709 instead of "make" as it used to. If GNU make is not available as "gmake"
4710 on your system, you can change this default behavior by setting the
4711 GNUMAKE environment variable.
4712 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4713 can build without error under CMU CL.
4715 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4717 * There is now a partial SBCL user manual (with some new text and some
4718 text cribbed from the CMU CL manual).
4719 * The beginnings of a profiler have been added (starting with the
4720 CMU CL profiler and simplifying and cleaning up). Eventually the
4721 main interface should be through the TRACE macro, but for now,
4722 it's still accessed through vaguely CMU-CL-style functions and macros
4723 exported from the package SB-PROFILE.
4724 * Some problems left over from porting CMU CL to the new
4725 cross-compilation bootstrap process have been cleaned up:
4726 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4727 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4728 part when getting rid of the compiler *BACKEND* stuff.)
4729 ** The value of *NULL-TYPE* was screwed up, because it was
4730 being initialized before the type system knew the final
4731 definition of the 'NULL type. This screwed up several key
4732 optimizations in the compiler, causing inefficiency in all sorts
4733 of places. (I found it because I wanted to understand why
4734 GET-INTERNAL-RUN-TIME was consing.)
4735 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4736 PROCLAIM FTYPE information. Unfortunately this broke binary
4737 compatibility again, since now the forms output by DEFGENERIC
4738 to refer to functions which didn't exist in 0.6.3.
4739 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4740 can use the new (as of 0.6.3) transform for SOME into MAP into
4742 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4743 values to (INTEGER 0 1000000), so that the time code will no longer
4744 occasionally get blown up by Linux returning 1000000 microseconds
4745 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4746 its output conform to the ANSI spec. (Alas, this makes its output
4747 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4748 * A full call to MAP NIL with a single sequence argument no longer conses.
4749 * fixes to problems pointed out by Martin Atzmueller:
4750 * The manual page no longer talks about multiprocessing as though
4751 it were currently supported.
4752 * The ILISP support patches have been removed from the distribution,
4753 because as of version 5.10.1, ILISP now supports SBCL without us
4754 having to maintain patches.
4755 * added a modified version of Raymond Toy's recent CMU CL patch for
4756 EQUALP comparison of HASH-TABLE
4758 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4760 * The system still can't cross-compile itself with
4761 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4762 entails), but at least it can compile more of itself that way
4763 than it used to be able to, and various buglets which were uncovered
4764 by trying to cross-compile itself that way have now been fixed.
4765 * This release breaks binary compatibility again. This time
4766 at least I've incremented the FASL file format version to 2, so that the
4767 problem can be detected reliably instead of just causing weird errors.
4768 * various new style warnings:
4769 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4770 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4771 ** using the lexical binding of a variable named in the *FOO* style
4772 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4773 as specified by ANSI.
4774 * *RANDOM-STATE* is no longer automatically initialized from
4775 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4776 default behavior of the system is to repeat its behavior every time
4777 it's run. If you'd like to change this behavior, you can always
4778 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4779 old convention there was no comparably easy way to get the system to
4780 repeat its behavior every time it was run.
4781 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4782 FTYPE declarations has been removed, in favor of their ANSI
4783 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4784 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4785 the types of their sequence arguments can be determined at compile time.
4786 This is done through a new open code expansion for MAP which eliminates
4787 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4788 argument types can be determined at compile time.
4789 * The optimizer now transforms COERCE into an identity operation when it
4790 can prove that the coerced object is already of the correct type. (This
4791 can be a win for machine generated code, including the output of other
4792 optimization transforms, such as the MAP transform above.)
4793 * Credit information has been moved from source file headers into CREDITS.
4794 * Source file headers have been made more standard.
4795 * The CASE macro now compiles without complaining even when it has
4798 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4800 * (Note that the way that the PCL macroexpansions were rewritten
4801 to accommodate the change in DEFGENERIC below breaks binary
4802 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4803 not run under sbcl-0.6.2. Once we get out of alpha releases,
4804 i.e. hit release 1.0.0, we'll probably try to maintain binary
4805 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4806 and sbcl-1.4.4. Until then, however, it might be fairly common
4807 for maintenance releases to break binary compatibility.)
4808 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4810 * The reporting of unhandled signals has been changed to print some
4811 explanatory text as well as the report form. (Previously only
4812 the report form was printed.)
4813 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4814 it defines, so that the compiler no longer issues undefined function
4815 warnings for compiled-but-not-yet-loaded generic functions.
4816 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4817 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4818 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4819 section of the ANSI spec are supported.
4820 * The "" nickname for the "KEYWORD" package has been removed.
4821 The reader still handles symbol tokens which begin with a package marker
4822 as keywords, but it doesn't expose its mechanism for doing so in the
4823 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4824 * The system now issues STYLE-WARNINGs for contradictory TYPE
4825 proclamations. (Warnings for contradictory FTYPE proclamations would
4826 be nice too, but those can't be done usefully unless the type system
4827 is made smarter about FUNCTION types.)
4828 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4829 systematized, so that "*target-*.lisp is supposed to exist only on the
4830 target and imply that there's a related file which exists on the
4831 host, and *host-*.lisp is supposed to exist only on the host and imply
4832 that there's a related file which exists on the target. This involves a
4833 lot of renaming. Hopefully the acute confusion caused by the renaming
4834 will be justified by the reduction in chronic confusion..
4835 ** runtime-type.lisp -> early-target-type.lisp
4836 ** target-type.lisp -> late-target-type.lisp
4837 ** early-host-format.lisp -> early-format.lisp
4838 ** late-host-format.lisp -> late-format.lisp
4839 ** host-error.lisp -> misc-error.lisp
4840 ** early-error.lisp -> early-target-error.lisp
4841 ** late-error.lisp -> late-target-error.lisp
4842 ** host-defboot.lisp -> early-defboot.lisp
4843 ** code/misc.lisp -> code/target-misc.lisp
4844 ** code/host-misc.lisp -> code/misc.lisp
4845 ** code/numbers.lisp -> code/target-numbers.lisp
4846 ** code/early-numbers.lisp -> numbers.lisp
4847 ** early-host-type.lisp -> early-type.lisp
4848 ** late-host-type.lisp -> late-type.lisp
4849 ** host-typep.lisp -> typep.lisp
4850 ** load.lisp -> target-load.lisp
4851 ** host-load.lisp -> load.lisp
4852 ** host-disassem.lisp -> disassem.lisp
4853 ** host-insts.lisp -> insts.lisp
4854 ** byte-comp.lisp -> target-byte-comp.lisp
4855 ** host-byte-comp.lisp -> byte-comp.lisp
4856 ** host-signal.lisp -> signal.lisp
4857 ** host-defstruct.lisp -> defstruct.lisp
4858 ** late-target-type.lisp -> deftypes-for-target.lisp
4859 Furthermore, several other previously target-only files foo.lisp (e.g.
4860 hash-table.lisp and random.lisp) have been split into a target-and-host
4861 foo.lisp file and a target-only target-foo.lisp file, with their key type
4862 definitions in the target-and-host part, so that the cross-compiler will
4863 know more about target types.
4864 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4865 gone away. In their place are various *BACKEND-FOO* variables
4866 corresponding to the slots of the old structure.
4867 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4868 into the target SBCL has been fixed.
4869 * The chill.lisp system for loading cold code into a running SBCL
4871 * Support for the CMU CL "scavenger hook" extension has been removed.
4872 (It was undocumented and unused in the CMU CL sources that SBCL was
4873 derived from, and stale in sbcl-0.6.1.)
4874 * Various errors in the cross-compiler type system were detected
4875 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4876 (enabling various consistency checks). Many of them were fixed,
4877 but some hard problems remain, so the compiler is back to
4878 running without *TYPE-SYSTEM-INITIALIZED* for now.
4879 * As part of the cross-compiler type system cleanup, I implemented
4880 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4881 * I have started adding UNCROSS calls throughout the type system
4882 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4883 on cross-compiler input files will be able to go away, and various
4885 * CONSTANTP now returns true for quoted forms (as explicitly required
4888 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4890 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4891 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4892 (MAKE-LIST -1). In the longer term, it ought to become true
4893 that declarations are assertions even at SAFETY 1. For now, it's not
4894 quite true even at SAFETY 3, but it's at least more nearly true..
4895 (Note that this change seems to increases the size of the system by
4896 O(5%) and to decrease the speed of the compiler by 20% or more.)
4897 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4898 for the problem of printing dozens of lines of distracting information
4899 about low-level system machinery as part of the top stack frame
4900 on entry to the debugger when an undefined function was called.
4901 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4902 is not reset to COMMON-LISP-USER.
4903 * Compilation of stuff related to dyncount.lisp has been made conditional
4904 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4905 smaller. The various dyncount-related symbols have been moved into
4906 a new "SB-DYNCOUNT" package.
4907 * tty-inspect.lisp has been renamed to inspect.lisp.
4908 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4909 feature has gone away. (When we eventually port to other flavors of
4910 libc and/or Unix, we'll try to make the differences between flavors
4911 invisible at the user level.)
4912 * Various other *FEATURES* tags, and/or their associated conditionals,
4913 have been removed if obsolescent, or given better documentation, or
4914 sometimes given more-mnemonic names.
4916 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4918 * tidied up "make.sh" script
4919 * tidied up system directory structure
4920 * better "clean.sh" behavior
4921 * added doc/FOR-CMUCL-DEVELOPERS
4922 * many many small tweaks to output format, e.g. removing possibly-confusing
4923 trailing #\. character in DESCRIBE-INSTANCE
4924 * (EQUALP #\A 'A) no longer signals an error.
4925 * new hashing code, including EQUALP hashing
4926 * tidied up Lisp initialization and toplevel
4927 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4928 * command line argument processing
4929 * added POSIX-GETENV function to deal with Unix-ish environment variables
4930 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4931 terminating SBCL on EOF
4932 * non-verbose GC by default
4933 * There is no more "sbcl" shell script; the sbcl file is now the C
4934 runtime executable (just like CMU CL).
4935 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4937 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4938 symbol and package information as Lisp native symbol and package objects
4939 instead of strings naming symbols and strings naming packages. This way,
4940 whenever packages are renamed (as in warm init), debug information is
4941 transformed along with everything else.
4942 * tweaked the optimization policy declarations which control the building
4943 of SBCL itself. Now, among other things, the system no longer saves
4944 source location debugging information. (This helps two problems at once
4945 by reducing SBCL size and by keeping SBCL from trying to look for its
4946 sources -- which may not exist -- when reporting errors.)
4947 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4948 debugging and testing purposes
4949 * cleaned up printing, making the printer call PRINT-OBJECT for
4950 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4951 methods, giving nearly-ANSI behavior
4952 * converted almost all special variables to use *FOO* naming convention
4953 * deleted PARSE-TIME functionality, since it can be done portably
4954 * moved some files out of cold init into warm init
4955 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4957 * regularized formatting of source files
4958 * added an install.sh script
4959 * fixed ridiculous memory usage of cross-compiler by making
4960 compiler/alloc.lisp not try to do pooling unless it can hook
4961 itself into the GC of the cross-compilation host. Now the system
4962 builds nicely on my old laptop.
4963 * added :SB-ALLOC in target-features.lisp-expr
4964 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4965 was not implemented)
4966 * re-did condition handling and note reporting in the compiler. Notes
4967 are no longer handled by signalling conditions. Style warnings
4968 and warnings are handled more correctly and reported in such a way
4969 that it's easy to find one or the other in your output (so that you
4970 can e.g. figure out which of many problems caused COMPILE-FILE to
4972 * changed the severity of several compiler warnings from full WARNING
4973 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4974 compiler note reporting so that it doesn't use the condition system
4975 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4976 COMPILE-FILE command)
4977 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4978 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4979 no longer supported, since their implementation was deeply intertwingled
4980 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4981 * removed bogus "support" for compiler macros named (SETF FOO), and
4982 removed the compiler macro for SETF INFO (but only after making a fool
4983 of myself on the cmucl-imp mailing list by posting a bogus patch for
4984 DEFINE-COMPILER-MACRO..)
4985 * Compiled files containing forms which have side effects on the Lisp
4986 reader (such as DEFPACKAGE forms) are now handled more correctly.
4987 (Compiler queuing of top level lambdas has been suppressed by setting
4988 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4989 * deleted various currently-unused source files, e.g. gengc.lisp. They
4990 may be added back at some point e.g. when porting to other architectures,
4991 but until they are it's distracting to distribute them and to try to
4993 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4994 there were so many of them they're just distractions, and UNCROSS is
4995 known to be able to handle the current sources
4996 * moved PROFILE functionality into TRACE, so that it will be clear
4997 how the wrapping and unwrapping of functions when you profile them
4998 interacts with the wrapping and unwrapping of functions when you
4999 trace them. (Actually, the functionality isn't there yet, but at least
5000 the interface specification is there. Hopefully, the functionality will
5001 arrive with some future maintenance release.)
5002 * removed host-oops.lisp
5003 * changed signature of QUIT function to allow UNIX-CODE argument
5004 * fixed READ-SEQUENCE bug
5005 * tweaked verbose GC output so that it looks more like the progress
5006 output that ANSI specifies for functions like LOAD
5007 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5008 * added <http://sbcl.sourceforge.com> to the banner information printed by