1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.28 relative to 1.0.27:
3 * bug fix: timers could go off in the wrong order, be delayed indefinitely
4 (thanks to Ole Arndt for the patch)
5 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
6 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
7 potentially-invalid effective methods in its cache.
8 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
9 frames, allowing for instance more reliable backtraces.
11 changes in sbcl-1.0.27 relative to 1.0.26:
12 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
13 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
14 * improvement: the system either recovers from stack exhaustion or dies
15 properly as opposed to leaving the user uncertain of whether the handler
16 trampled on some random memory next to the stack or having to rely on
17 --lose-on-corruption (which is still a good idea to use in production
18 because stack exhaustion can happen in signal handlers which will likely
20 * bug fix: fix gc related interrupt handling bug on ppc (regression from
21 1.0.25.37, reported by Harald Hanche-Olsen)
22 * bug fix: work around signal delivery bug in darwin (regression from
23 1.0.25.44, reported by Sidney Markowitz)
24 * bug fix: fix ERROR leaking memory (reported by David Thompson)
26 changes in sbcl-1.0.26 relative to 1.0.25:
27 * incompatible change: an interruption (be it a function passed to
28 INTERRUPT-THREAD or a timer function) runs in an environment where
29 interrupts can be enabled. The interruption can use
30 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
31 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
32 potentially running out of stack. Keep in mind that in the absence
33 of WITHOUT-INTERRUPTS some potentially blocking operation such as
34 acquiring a lock can enable interrupts.
35 * incompatible change: GC-OFF and GC-ON are removed, as they were
36 always unsafe. Use WITHOUT-GCING instead.
37 * new feature: runtime option --disable-ldb
38 * new feature: runtime option --lose-on-corruption to die at the
39 slightest hint of possibly non-recoverable errors: running out of
40 memory, stack, alien stack, binding stack, encountering a memory
41 fault, etc. In the absence of --lose-on-corruption a warning is
43 * enhancement: detect binding stack exhaustion
44 * enhancement: detect alien stack exhaustion on x86/x86-64
45 * improvement: generally more stable and reliable interrupt handling
46 * improvement: there is a per thread interruption queue,
47 interruptions are executed in order of arrival
48 * improvement: a repeating timer reschedules itself when the it has
49 finished, but expiration times are spaced equally. If an
50 expiration time is in the past it will trigger after a short grace
51 period that may give a chance to other things to run.
52 * optimization: slightly faster gc on multithreaded builds
53 * optimization: faster WITHOUT-GCING
54 * bug fix: when JOIN-THREAD signals an error, do it when not holding
55 important locks so that the debugger/handler doesn't produce
56 recursive errors or deadlock.
57 * bug fix: real-time signals are not used anymore, so no more
58 hanging when the system wide real-time signal queue gets full.
59 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
61 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
62 * bug fix: fix random memory faults related to interrupts on alpha
63 * bug fix: fix random memory faults related to interrupts on sparc
64 * bug fix: fix deadlocks related to starting threads
65 * bug fix: fix deadlines on locks on futex platforms
66 * bug fix: restore errno in signal handlers
67 * bug fix: fix deadlocks related to hash tables
68 * bug fix: fix deadlocks in pcl
70 changes in sbcl-1.0.25 relative to 1.0.24:
71 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
72 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
73 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
74 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
75 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
76 better name and does not return values so stale on multiprocessor systems.
77 Also, HOLDING-MUTEX-P was added for about the only sane usage of
79 * improvement: unithread builds keep track of MUTEX-VALUE.
80 * improvement: reading from a TWO-WAY-STREAM does not touch the output
81 stream anymore making it thread safe to have a concurrent reader and
82 a writer, for instance, in a pipe.
83 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
84 arguments, making compiler-macros for SETF-functions able to inspect
85 their constant arguments.
86 * improvement: COMPILE-FILE reports times with millisecond accuracy
87 (thanks to Luis Oliveira)
88 * optimization: CHAR-CODE type derivation has been improved, making
89 TYPEP elimination on subtypes of CHARACTER work better. (reported
90 by Tobias Rittweiler, patch by Paul Khuong)
91 * bug fix: setting alien structure fields of type struct by value now
92 computes the right offset for the memory copy.
93 * bug fix: compilation problem involving inlined calls to aliens with
94 result type VOID. (reported by Ken Olum)
95 * bug fix: #235a; sequential inline expasion in different policies no
96 longer reuses the functional from the previous expansion site.
97 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
98 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
99 * bug fix: named ENUMs in multiply-referenced alien record types no longer
100 cause an implied type redefinition. Regression from 1.0.21.29.
101 * bug fix: sign-extension of small signed return values now works with C
102 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
103 * improvements to the Windows port:
104 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
105 Westfold, thanks to Rudi Schlatte)
107 changes in sbcl-1.0.24 relative to 1.0.23:
108 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
109 vector of a multidimensional SIMPLE-ARRAY.
110 * new feature: the system now signals a continuable error if standard
111 readtable modification is attempted. (thanks to Tobias Rittweiler)
112 * new feature: DIRECTORY has been extended with a non-standard keyword
113 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
114 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
115 has been robustified and documented better. (thanks to Robert Goldman)
116 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
117 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
118 * tradeoff: constant FORMAT control strings are now compiled unless
119 SPACE > SPEED (previously only when SPEED > SPACE.)
120 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
122 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
124 * bug fix: lexical type declarations are now correctly reported by
125 SB-CLTL2. (reported by Larry D'Anna)
126 * bug fix: STRING-TO-OCTETS did not handle :START properly when
127 using UTF-8 as external format. (thanks to Luis Oliveira)
128 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
129 are signalled correctly. (thanks to Stas Boukarev)
130 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
131 designator. (thanks to Tobias Rittweiler)
132 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
133 designator, and returns T instead of the function. (thanks to
135 * bug fix: direct superclasses of STANDARD-CLASS and
136 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
137 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
138 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
139 when no class with the named slot yet exists no longer causes a
140 compile-time style-warning.
141 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
142 in safe code. (reported by Didier Verna)
143 * bug fix: #430; nested structure constructors can stack allocate.
144 * bug fix: on some 64-bit platforms dynamic space size was truncated
145 to #xffff0000 bytes. (reported by Benjamin Lambert)
146 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
147 REPL unusable. (reported by Daniel Herring)
148 * bug fix: return values of READ-SEQUENCE did not take :START into
149 account on file streams, regressions since 1.0.12.22. (reported by
150 Thomas Russ, patch by Paul Khuong)
151 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
152 method specializer used to confuse permuation vector optimization.
153 * bug fix: system inserted bogus implicit type declarations for local
154 special variables in DEFMETHOD bodies.
155 * bug fix: #354; duplicated frames in backtraces due to
156 non-tail-call-optimized XEPs to functions with return type NIL
158 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
159 initializes structure object slots according to DEFSTRUCT initforms,
160 and DEFSTRUCT forms :INCLUDEind structure classes defined using
161 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
162 (reported by Bruno Haible and Stephen Wilson)
163 * bug fix: #395; fill-pointer output streams used now support
164 element-type BASE-CHAR as well.
165 * bug fix: compiler error when attempting to derive return value of
166 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
168 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
170 * bug fix: Mac OS X binaries should now be portable between Leopard
173 changes in sbcl-1.0.23 relative to 1.0.22:
174 * enhancement: when disassembling method functions, disassembly
175 for the associated fast function is also produced.
176 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
178 * optimization: printing with *PRINT-PRETTY* true is now more
179 efficient as long as the object being printed doesn't require
180 special handling by the pretty printer.
181 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
182 now interact correctly with type declarations.
183 * partial bug fix: PCL detects infinite recursion during wrapper
184 validation. (thanks to Attila Lendvai)
185 * bug fix: #426; nested function calls are inlined properly.
186 Previously if FOO was an inline function, in calls of the form
187 (FOO (FOO ...)) the outer call was not inlined.
188 * bug fix: long long arguments passed in registers to alien
189 functions on PowerPC Linux and NetBSD are now handled correctly
190 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
192 changes in sbcl-1.0.22 relative to 1.0.21:
193 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
194 for the shared object in the current directory, but passes the native
195 namestring of the designated pathname to the operation system's shared
196 object loading function as-it.
197 * minor incompatible change: --disable-debugger toplevel option now takes
198 effect before processing of initialization files and --eval or --load
200 * new feature: new commandline argument: --script, which supports
201 shebang lines. See documentation for details. (based on work by
203 * new feature: SAVE-LISP-AND-DIE can save current values of
204 --dynamic-space-size and --control-stack-size in the executable core,
205 causing it to skip normal runtime option processing. See documentation
206 for details. (thanks to Zach Beane)
207 * enhancement: inoccous calls to EVAL or generic functions dispatching
208 on subclasses of eg. STREAM no longer cause compiler notes to appear.
209 * enhancement: the system no longer resignals errors from --load and
210 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
211 associated with the original error to be lost. (thanks to Ariel
213 * enhancement: :DONT-SAVE keyword argument has been added to
214 LOAD-SHARED-OBJECT for controlling interaction with
215 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
216 the effects of an earlier LOAD-SHARED-OBJECT call.
217 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
218 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
219 provided. (reported by Cedric St-Jean)
220 * bug fix: circularity handling in the reader did not treat raw
221 structure slots correctly. (reported by Cedric St-Jean)
222 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
223 file descriptors when there were none.
224 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
225 was broken. (reporteed by Willem Broekema)
226 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
227 pathnames without a directory.
228 * bug fix: COMPILE-FILE did not warn about undefined variable
229 references at toplevel, and LOAD of the resulting fasl did
231 * bug fix: functions with non-required arguments used to end up with
232 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
233 * bug fix: redefining a function with non-required arguments didn't
234 update the system's knowledge about its call signature properly.
235 * bug fix: fixed #431; incompatible alien record type redefinitions
236 are detected and handled. (reported by Neil Haven)
237 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
238 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
240 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
241 after alien stack frames.
242 * bug fix: strings passed to mk{s,d}temp lacked null termination
244 changes in sbcl-1.0.21 relative to 1.0.20:
245 * new feature: the compiler is able to track the effective type of a
246 generic function across method addition and removal.
247 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
248 appropriately typed structure slots without locking.
249 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
250 information like those gathered by TIME using a programming-friendly
252 * new feature: TIME reports time taken even if the form performs a
253 non-local transfer of control.
254 * enhancement: reduced conservativism on GENCGC platforms: on
255 average 45% less pages pinned (measured from SBCL self build).
256 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
257 mutate constant symbols or violate declaimed type of the symbol.
258 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
259 sleeping on the semaphore in heavily contested semaphores.
260 * bug fix: semaphores and condition variables were not interrupt
262 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
263 owned by other threads anymore.
264 * bug fix: FIND on lists called KEY outside the specified
265 subsequence. (reported by budden)
266 * bug fix: LOG doesn't use single-float intermediate results when
267 given mixed integer and double-float arguments, leading to better
268 precision. (reported by Bob Felts)
269 * bug fix: LOG with base zero returned values of inconsistent type.
271 changes in sbcl-1.0.20 relative to 1.0.19:
272 * minor incompatible change: OPTIMIZE qualities
273 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
274 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
275 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
276 * documentation: some slot access efficiency guidelines have been
277 added to the user manual.
278 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
279 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
280 as ASSOC and MEMEBER.
281 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
282 to more efficient EQ-comparison versions more often.
283 * optimization: enhanced derivation of DOLIST iteration variable type
285 * optimization: constant folding of simple (LIST ...) forms as DOLIST
287 * optimization: runtime lookup of function definitions can be
288 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
289 * optimization: compiler is able to derive the return type of
290 (AREF (THE STRING X) Y) as being CHARACTER.
291 * optimization: CLRHASH on empty hash-tables no longer does pointless
292 work. (thanks to Alec Berryman)
293 * optimization: REPLACE deftransforms don't punt when :START1 or
295 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
296 no longer emits a code deletion note. (reported by Andrew
298 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
299 functions with an odd number of &OPTIONAL arguments, a &REST
300 argument, and one or more &KEY arguments at the call site.
301 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
302 arguments appeared at call sites as well.
303 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
304 READ-LINE &co can no longer read from them afterwards. (reported
306 * bug fix: fixed #427: unused local aliens no longer cause compiler
307 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
309 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
310 alien-stack leakage. (reported by Andy Hefner)
311 * bug fix: PROGV signals an error when an attempt to violate declared
312 type of a variable or bind a constant is made.
313 * bug fix: SET signals an error when an attempt to violate declared
314 type of a variable is made.
315 * bug fix: restart computation during the execution of a restart
316 test function no longer causes infinite recursion. (reported by
318 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
319 signals an error. (thanks to Pierre Mai)
320 * bug fix: EXPORT left symbol unexported in conflict situations.
321 (thanks to Michael Weber)
322 * bug fix: correctly handle name conflicts involving CL:NIL.
323 (thanks to Michael Weber)
324 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
325 conflicts arising from USEing package with conflicting symbols
326 correctly. (thanks to Michael Weber)
328 changes in sbcl-1.0.19 relative to 1.0.18:
329 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
330 warnings that go otherwise unhandled will be muffled if they are
331 of the type that's the value of this variable.
332 * optimization: stack allocation is slightly more efficient on x86
334 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
335 where a raw slot always is initialized using the initform whose
336 type is not know sufficiently well a compile-time are now compiled
337 correctly. (reported by John Morrison)
338 * bug fix: compiler no longer makes erronous assumptions in the
339 presence of non-foldable SATISFIES types.
340 * bug fix: stack analysis missed cleanups of dynamic-extent
341 arguments in non-let-converted calls to local functions.
342 * improvements to the Windows port:
343 ** adjusted address spaces for building on both Win32 and
344 Win64. (thanks for John Connors)
345 * fixed some bugs revealed by Paul Dietz' test suite:
346 ** interval arithmetic during type derivation used inexact integer
347 to single-float coercions.
348 ** arithmetic operations involving large integers and single
349 floats give the same results in compiled and interpreted code.
350 ** deriving the result type of COERCE no longer signals an error
351 if the derived type of the second argument is a MEMBER type
352 containing invalid type specifiers.
353 ** ADJOIN with constant NIL as second argument works correctly.
354 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
356 changes in sbcl-1.0.18 relative to 1.0.17:
357 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
358 profiles only the current thread.
359 * minor incompatible change: changes to SYMBOL-VALUE of constants
360 defined with DEFCONSTANT now signal an error.
361 * enhancement: SB-SPROF now has support for wallclock profiling,
362 and is also able to profile specific threads. REPORT output
363 has also additional sorting options.
364 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
366 * optimization: structure allocation has been improved
367 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
368 ** out of line constructors are ~10% faster.
369 ** inline constructors are ~15% faster.
370 ** inline constructors are capable of dynamic extent allocation
371 (generally on x86 and x86-64, in some cases on other platforms
373 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
375 * optimization: file compiler is now able to coalesce non-circular
376 lists, non-base strings, and bit-vectors. Additionally, constants
377 are never referenced through SYMBOL-VALUE at runtime.
378 * optimization: code defining methods on PRINT-OBJECT (and other
379 generic functions in the COMMON-LISP package) now loads faster.
380 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
382 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
383 fasl is now deleted. (reported by Attila Lendvai)
384 * bug fix: READ-LINE always returned NIL for the last line in files.
385 (reported by Yoshinori Tahara)
386 * bug fix: more accurate disassembly annotations of foreign function
387 calls. (thanks to Andy Hefner)
388 * bug fix: trimming non-simple strings and non-string string
389 designators when the there is nothing to trim works properly.
390 (thanks to James Knight)
391 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
392 (thanks to Travis Cross)
393 * fixed some bugs revealed by Paul Dietz' test suite:
394 ** NIL is a valid function name (regression at 1.0.13.38)
395 ** FILL on lists was missing its return value (regression at 1.0.12.27)
396 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
397 fill pointers properly (regression at 1.0.12.23)
398 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
399 displacement indices properly (regression at 1.0.12.23)
401 changes in sbcl-1.0.17 relative to 1.0.16:
402 * temporary regression: user code can no longer allocate closure
403 variable storage on stack, due to bug 419 without explicitly
404 requesting it. Please consult sbcl-devel for advice if you need to
405 use this feature in the meanwhile.
406 * new feature: runtime argument --control-stack-size can be used to
407 adjust thread default control stack size.
408 * enhancement: improved TIME output
409 ** all times are reported using the measured accuracy (milliseconds
410 for real and GC times, microseconds for everything else.)
411 ** processor cycle counts on x86 and x86-64.
412 ** interpreted forms are counted for both evaluator modes.
413 ** number of lambdas converted by the compiler is reported.
414 ** CPU percentage report (computed from real and total run time.)
415 ** more comprehensive run time reporting, using a condenced format
416 ** interperted form, lambda, and page fault counts are omitted
418 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
420 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
421 * optimization: two argument forms of LAST are upto ~10% faster
422 in normal SPEED policies.
423 * optimization: NCONC no longer needs to heap cons its &REST list
424 in normal SPEED policies.
425 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
427 * bug fix: UNION and NUNION work with :TEST-NOT once more,
428 regression since 1.0.9.1. (thanks to Eric Marsden)
429 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
430 since 1.0.15.36. (thanks to Paul Khuong)
431 * bug fix: LAST when always returned the whole list when given a bignum
432 as the second argument.
433 * bug fix: dynamic extent allocation of nested lists and vectors
434 could leak to otherwise accessible parts.
435 * bug fix: invalid optimization of heap-allocated alien variable
437 * bug fix: fasl header checking is less vulnerable to different
438 platform word lengths.
439 * bug fix: more correct assembler syntax for GNU binutils
440 2.18.50.0.4 support. (thanks to Marijn Schouten)
441 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
443 * bug fix: the fopcompiler can handle LOCALLY forms (with no
444 declarations) successfully. (reported by Attila Lendvai)
446 changes in sbcl-1.0.16 relative to 1.0.15:
447 * minor incompatible change: revert the changes to sb-posix's error
448 signaling added in 1.0.14.
449 * minor incompatible change: change PROBE-FILE back to returning
450 NIL whenever we can't get a truename, as was the case before 1.0.14.
451 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
452 inherits from ERROR instead of just CONDITION.
453 * new feature: SB-INTROSPECT can provide source locations for instances
454 as well. (thanks to Tobias Rittweiler)
455 * optimization: binding special variables now generates smaller code
456 on threaded platforms.
457 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
458 and cases where no :TEST is given but the compiler can infer that
459 the element to search is of type (OR FIXNUM (NOT NUMBER)).
460 * optimization: better LOGNOT on fixnums.
461 * optimization: modular arithmetic for a particular requested width
462 is implemented using a tagged representation unless a better
463 representation is available.
464 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
465 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
466 for wellformedness and returns a specialized vector. (reported by
467 Francois-Rene Rideau)
468 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
469 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
470 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
471 unscheduling timer at the same time as another timer fires.
472 * bug fix: don't reschedule timers for dead threads.
473 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
474 * bug fix: copying output from RUN-PROGRAM to a stream signalled
475 bogus errors if select() was interrupted.
476 * enhancement: add support for fcntl's struct flock to SB-POSIX.
478 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
479 * enhancement: cleaner backtraces for interactive interrupts, as
480 well as other cases where the interesting frames used to be
481 obscured by interrupt handling frames.
482 * enhancement: untracing a whole package using (UNTRACE "FOO") is
483 now supported, and tracing a whole package using (TRACE "FOO") now
484 traces SETF-functions as well.
485 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
486 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
487 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
488 * unreadably printed representation of hash-tables now includes
490 * bug fix: partially fixed #188: type propagation from assignments
491 is now more efficient.
492 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
493 'DOUBLE-FLOAT) are not flushable.
494 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
495 full address of the object, and none of the tag bits.
496 * bug fix: readably printing hash-tables now respects other printer
497 control variables. (reported by Cedric St-Jean)
498 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
499 keyword with MAKE-HASH-TABLE.
500 * bug fix: export SB-POSIX:MKSTEMP.
501 * bug fix: SORT was not interrupt safe.
502 * bug fix: XREF accounts for the last node of each basic-block as
504 * bug fix: MAKE-INSTANCE optimizations interacted badly with
505 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
506 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
507 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
508 create obsolete instances in the case of redefinition or
509 obsoletion of a superclass. (thanks to Andy Hefner)
510 * bug fix: Support for the Alpha architecture has been revived; it had
511 suffered somewhat from lack of maintenance since sbcl-1.0.
512 * improvements to the Windows port:
513 ** The system detects the codepage to use at startup, instead of
514 using the value from the saved core. (thanks to Kei Suzuki)
516 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
517 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
518 (see documentation for details.)
519 * revived support for OpenBSD (contributed by Josh Elsasser)
520 * partially fixed bug #108: ROOM no longer suffers from occasional
521 (AVER (SAP= CURRENT END)) failures.
522 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
523 bodies no longer cause a WARNING to be signalled. (reported by
525 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
526 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
527 the bug in TRUNCATE.) (reported by Michael Weber)
528 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
529 no samples. (reported by Andy Hefner)
530 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
531 no longer appear as (NIL ...) frames in backtraces.
532 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
533 is now actually exported from SB-EXT as documented. (reported by
535 * bug fix: sb-aclrepl now correctly understands how to inspect
536 single-floats on 64-bit platforms where single-floats are not boxed.
537 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
538 yet been finalized. (reported by Levente Meszaros)
539 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
540 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
541 SBCL-specific optimize qualities.
543 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
544 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
545 an executable in the search path, and does so in the child
546 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
547 been removed; it can be found in the CVS history, for somebody who
548 needs that search behavior (see the manual).
549 * minor incompatible change: compiler policy re. weakening type
550 checks has changed: now type checks are weakened only if SAFETY < 2
552 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
553 unparsing of directory pathnames as files. Analogously,
554 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
555 filename to parse into a directory pathname.
556 * enhancement: implicit generic function creation now signals a
557 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
558 users can bind handlers for and muffle around calls to LOAD.
559 * enhancement: RUN-PROGRAM allows unicode arguments and environments
560 to be used (using the default stream external format), and allows
561 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
562 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
563 strings and vectors whose element-type or simplicity is not fully
564 known at compile-time.
565 * optimization: STRING-TRIM and related functions no longer allocate
566 a new string when no trimming needs to be performed. These functions
567 are also faster than before when the input string has been declared
569 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
570 * optimization: READ-LINE is significantly faster for files containing
572 * optimization: non-open coded uses of character comparison operators
573 (e.g. char=) no longer cons when called with more than one parameter
574 on platforms supporting dynamic-extent allocation.
575 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
576 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
577 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
579 * bug fix: some sequence functions elided bounds checking when
581 * bug fix: too liberal weakening of union-type checks when SPEED >
583 * bug fix: more bogus fixnum declarations in ROOM implementation
586 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
587 * new feature: MAKE-HASH-TABLE now experimentally accepts a
588 :SYNCHRONIZED argument, which makes the hash-table safe for
589 concurrent accesses (but not iteration.) See also:
590 SB-EXT:WITH-LOCKED-HASH-TABLE, and
591 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
592 * optimization: CONCATENATE on strings is an order of magnitude faster
593 in code compiled with (> SPEED SPACE).
594 * optimization: SUBSEQ is ~50% faster on lists.
595 * bug fix: bug 417 fixed -- source location reporting is now more robust.
596 * bug fix: SUBSEQ on a list will now correctly signal an error if if
597 END is smaller then START.
598 * bug fix: SB-PROFILE will no longer report extra consing for nested
599 calls to profiled functions.
600 * bug fix: ROOM implementation had bogus fixnum declarations which
601 could cause type-errors when calling ROOM on large images.
602 * bug fix: if file compilation is aborted, the partial fasl is now
603 deleted, and COMPILE-FILE returns NIL as the primary value.
604 * bug fix: number of thread safety issues relating to SBCL's internal
605 hash-table usage have been fixed.
606 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
607 be returned from its body when the values were being returned
608 using unknown-values return convection and the W-P-O was wrapped
609 inside an UNWIND-PROTECT.
610 * bug fix: sb-posix should now compile again under Windows, enabling
613 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
614 * incompatible change: hash-table accessor functions are no longer
615 automatically protected by locks. Concurrent accesses on the same hash-table
616 from multiple threads can give inconsistent results or even corrupt the
617 hash-table completely. Multi-threaded applications should do their own
618 locking at the correct granularity. In the current implementation it is
619 still safe to have multiple readers access the same table, but it's not
620 guaranteed that this property will be maintained in future releases.
621 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
622 and will signal an error at runtime.
623 * enhancement: SB-THREAD package now exports a semaphore interface.
624 * enhancement: CONS can now stack-allocate on x86 and
625 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
627 * enhancement: nested lists can now be stack allocated on
628 platforms providing stack allocation support.
629 * enhancement: dynamic-extent support has been extended to support
630 cases where there are multiple possible sources for the stack
632 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
633 if the mutex is uncontested on Linux.
634 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
635 as specified by the CLHS. (thanks to Tobias Rittweiler)
636 * bug fix: NaN comparison now works on x86-64.
637 * bug fix: CLOSE :ABORT T on a stream with pending output now
639 * bug fix: instances of non-standard metaclasses using standard
640 instance structure protocol sometimes missed the slot type checks
642 * bug fix: known functions can be inlined in high-debug code.
644 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
645 * minor incompatible change: the MSI installer on Windows no longer
646 associates .lisp and .fasl files with the installed SBCL.
647 * minor incompatible change: :UNIX is no longer present in *FEATURES*
648 on Windows. (thanks to Luis Oliviera)
649 * new feature: SB-CLTL2 contrib module now implements
650 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
651 * optimization: scavenging weak pointers is now more efficient,
652 requiring O(1) instead of O(N) per weak pointer to identify
653 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
654 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
655 method bodies using constant slot-names when the first argument is
656 a specializer parameter for the method.
657 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
658 names, when the class of the instance is a direct instance
659 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
660 as slow as the constant slot-name case.)
661 * optimization: member type construction is now O(N) instead
663 * optimization: UNION and NUNION are now O(N+M) for large
664 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
666 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
667 now more readable in environments like Slime which display it.
668 (thanks to Tobias C. Rittweiler)
669 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
670 was able to infer the correct argument type for the object on which
671 the CAS operation was being performed.
672 * bug fix: copy propagation interfered with parallel assignment
673 semantics in local calls. (reported by Paul Khuong)
674 * bug fix: the signed modular fixnum shift compiled to wrong code on
675 x86 and x86-64. (spotted by a slight modification to some of
678 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
679 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
680 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
681 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
683 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
684 and generic function now print the object identity for anonymous
685 instances. (thanks to Attila Lendvai)
686 * enhancement: as an extension to MOP, SBCL now supports SETF of
687 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
688 (thanks to Attila Lendvai)
689 * enhancement: sb-cover has an alternate annotation mode which puts
690 the form annotations at the car of the form, instead of annotating
691 it completely. The benefit of this mode is that it shows better
692 which forms were instrumented by the compiler.
693 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
694 by printer control variables. (reported by Dan Corkill)
695 * bug fix: system leaked memory when delayed output was performed by
696 the OS in smaller chunks then expected. (thanks to David Smith)
697 * bug fix: system leaked memory when file streams were not closed
699 * bug fix: large objects written to slow streams that were modified
700 after the write could end up with the modified state written to
701 the underlying file descriptor.
702 * bug fix: multiple threads operating in parallel on the same stream
703 could cause buffer-overflows.
704 * bug fix: source location information is stored correctly
705 (broken since 1.0.6). This bug would generally show up as the
706 Slime debugger highlighting the wrong form when the sldb-show-source
708 * bug fix: Branch forms are again annotated as branches in the sb-cover
710 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
711 on x86-64. (reported by Gregory Vanuxem)
712 * bug fix: EQUALP could return wrong results for structures with raw
713 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
714 word). (reported by Vjacheslav Fyodorov)
715 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
718 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
719 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
720 atomic compare-and-swap operations on threaded platforms.
721 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
722 allows assigning a global minimum value to optimization qualities
723 (overriding proclamations and declarations).
724 * enhancement: closed over variables can be stack-allocated on x86
726 * performance bug fix: GETHASH and (SETF GETHASH) are once again
728 * optimization: slot definition lookup is now O(1). This speeds up
729 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
730 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
731 * optimization: ASSOC and MEMBER can now be open-coded for all
732 combinations of keyword arguments when second argument is constant
733 and SPEED >= SPACE. In other cases a specialized version is
735 * bug fix: using obsoleted structure instances with TYPEP and
736 generic functions now signals a sensible error.
737 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
738 (reported by Kristoffer Kvello)
739 * bug fix: backtrace construction is now more careful when making
740 lisp-objects from pointers on the stack, to avoid creating bogus
741 objects that can be seen by the GC.
742 * bug fix: defaulting of values in contexts expecting more than 7
743 variables now works on x86-64. (reported by Christopher Laux)
744 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
746 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
747 as the property-list of a symbol.
748 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
749 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
750 situations requested, are once again file-compileable. (reported
753 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
754 * MOP improvement: support for user-defined subclasses of
755 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
756 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
757 the expansion of DEFMETHOD, is responsible for generating a form
758 which creates a list of specializers when evaluated. Additional
759 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
760 debugging and introspective support.
761 * minor incompatible change: the (unsupported) spinlock interface
762 has changed: free spinlock now has the value NIL, and a held spinlock
763 has the owning thread as its value.
764 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
765 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
767 * enhancement: name of a socket-stream is now "a socket" instead of
769 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
770 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
771 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
772 for generic functions. (Thanks to Tobias C. Rittweiler)
773 * optimization: bignum printing speed has been improved by 20-40%
774 (depending on the bignum size.)
775 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
777 * bug fix: the cache used by the CLOS to store precomputed effective
778 methods, slot offsets, and constant return values is now thread and
780 * bug fix: generic function dispatch function updating is now thread
781 and interrupt safe (in the sense that the known issues have been
783 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
784 * bug fix: interning EQL-specializers is now thread and interrupt safe.
785 * bug fix: asdf systems with dependencies to the SB-POSIX or
786 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
787 * bug fix: interrupt safety of applicable method computation has been
790 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
791 * new contrib: sb-cover, an experimental code coverage tool, is included
793 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
794 significantly faster.
795 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
796 produce more efficient code on x86-64 if the compiler can determine
797 that (+ INDEX <constant>) does not require a bounds check and FOO
798 has an element type at least 8 bits wide.
799 * enhancement: a new, experimental synchronous timeout facility is
800 provided. Refer to SB-SYS:WITH-DEADLINE for details.
801 * enhancement: when a symbol name conflict error arises, the
802 conflicting symbols are always printed with a package prefix.
803 (thanks to Kevin Reid)
804 * enhancement: stepping is now once again supported on the SPARC and
805 MIPS platforms. (It is also now more likely to work on CheneyGC
807 * enhancement: sb-sprof can now also track and report accurate call
809 * bug fixes: the treatment of non-standard subclasses of
810 SB-MOP:SPECIALIZER is more correct.
811 * incompatible change: PURIFY no longer copies the data from the
812 dynamic space into the static and read-only spaces on platforms
813 that use the generational garbage collector
814 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
816 * bug fix: GC race condition occasionally resulting in crashes with
817 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
819 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
821 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
822 a STYLE-WARNING to be signalled (regression from 1.0.4.)
823 * bug fix: an asynchronous interrupt could previously leave the
824 system running with GC inhibited.
825 * bug fix: a DECLARE form evaluated at top-level now causes an error
826 rather than silently (or verbosely) returning NIL.
827 * bug fix: trying to dissassemble functions compiled at high DEBUG could
828 result in a error being signalled due to source form lookup errors.
829 (reported by Peter Graves)
831 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
832 * incompatible change: removed writer methods for host-ent-name,
833 host-ent-addresses -- changing the values did not update the DNS
835 * minor incompatible change: changed experimental JOIN-THREAD interface
836 * documentation: the manual now lists reader and writer methods
837 in class slot documentation sections. (thanks to Richard M Kreuter)
838 * documentation: unwinding from asyncronous events has been
839 documented as unsafe.
840 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
841 in multithreaded application code.
842 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
843 platforms. (thanks to James Anderson for the optimization hint)
844 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
846 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
847 variants no longer cons.
848 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
849 their NOT- variants no longer cons.
850 * optimization: EQUAL hash tables no longer use SXHASH for objects
851 of all data types, but instead use an EQL hash for types for which
852 EQUAL is the same as EQL.
853 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
854 are significantly faster.
855 * optimization: new STRING-OUTPUT-STREAM implementation is much
856 faster for large outputs and conses 30% less on average.
857 * enhancement: XREF information is now collected for references made
858 to global variables using SYMBOL-VALUE and a constant argument.
859 * enhancement: SIGINT now causes a specific condition
860 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
861 * bug fix: FILE-POSITION used to signal an error in some cases where
862 ANSI requires it to return NIL.
863 * bug fix: ADJUST-ARRAY is now interrupt-safe.
864 * bug fix: adding and removing fd-handlers is now interrupt-safe.
865 * bug fix: inlined calls to C now ensure 16byte stack alignment on
867 * bug fix: bad type declaration in the CLOS implementation has
868 been fixed. (reported by James Anderson)
869 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
870 (thanks to Lutz Euler)
871 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
872 required by the CLHS. (reported by Samium Gromoff)
873 * bug fix: dead unbound variable references now signal an error.
874 (reported by Marco Monteiro)
875 * bug fix: / with an unused value was being deleted in safe code.
876 (thanks to Marco Monteiro and Kevin Reid)
877 * bug fix: number of characters that can be written onto a single
878 line in a file is unlimited.
879 * bug fix: some GC deadlocks caused by asynchronous interrupts have
880 been fixed by inhibiting interrupts for when GC is disabled.
881 * bug fix: some interrupt safety issues with GETHASH, (SETF
882 GETHASH), CLRHASH and REMHASH have been fixed.
883 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
884 specifier no longer causes infinite recursion.
885 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
886 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
887 * bug fix: an &environment argument with the correct variable information
888 is passed to macros that are expanded during byte compilation.
889 (reported by Samium Gromoff)
890 * bug fix: a logic error was causing the hash function for bignums to
891 have excessive amounts of collisions. (reported by Faré Rideau)
892 * bug fix: modifying the contents of an array could change the return
893 value of SXHASH on that array, which is only allowed for strings
894 and bit vectors. (bug introduced in 0.9.16)
895 * improvement: the x86-64/darwin port now passes all tests (except
896 for the debugger tests) but should still be considered
897 experimental until this is fixed.
898 * improvement: a style-warning is signaled for CASE (etc) clauses with
899 duplicate keys. (thanks to Kevin Reid)
900 * improvement: macos/x86 and macos/x86-64 now use mach exception
901 handlers for dealing with illegal instructions (for trapping and
902 error handling) and memory protection violations (for GC).
904 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
905 * new platform: experimental support for x86-64/darwin (MacOS).
906 * incompatible change: the thread-safe (on most platforms) getaddrinfo
907 and getnameinfo sockets functions are used instead of gethostbyaddr
908 and gethostbyname, on platforms where the newer functions are available.
909 As a result, the ALIASES field of HOST-ENT will always be NIL on these
911 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
912 don't print the startup banner, but behave as if --noinform was passed
913 as a command line argument. (thanks to Kevin Reid)
914 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
915 * optimization: code using alien values with undeclared types is much faster.
916 * optimization: the compiler is now able to open code SEARCH in more cases.
917 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
918 * bug fix: using standardized COMMON-LISP special variables as loop
919 variables no longer signals bogus package lock violations. (reported
921 * bug fix: declaring local loop variables to be of a range-limited type
922 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
923 (reported by Andras Simon)
924 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
925 bugs remain on x86-64.)
926 * bug fix: the #= and ## reader macros now interact reasonably with
927 funcallable instances.
928 * bug fix: type-checks for function arguments were compiled using the
929 compiler policy settings of the wrong lexical environment (in 1.0.2
931 * bug fix: SHADOW accepts characters as string designators, as required
932 by the spec (thanks to Eric Marsden)
933 * bug fix: fixed GC safety issues when foreign functions are called with
934 non-base strings as arguments
935 * bug fix: more consistent error output for fatal-compiler-warnings, like
937 * bug fix: functions with proper names were showing up as NIL in
938 backtraces (reported by Edi Weitz, regression in 1.0.2)
940 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
941 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
942 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
943 produce more efficient code on the x86 if the compiler can determine
944 that (+ INDEX <constant>) does not require a bounds check and FOO
945 has an element type at least 8 bits wide.
946 * bug fix: references to undefined variables are handled the same way
947 in toplevel forms as in the normal compiler
948 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
950 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
951 (thanks to Jon Buller)
952 * improvement: faster compilation times for complex functions
953 * improvement: added readlink support to SB-POSIX (thanks to Richard
956 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
957 * improvement: experimental support for mach exception handling on
958 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
960 * improvement: support for GBK external format.
961 (thanks to Chun Tian (binghe))
962 * improvement: the debugger now displays variables that have been closed
963 over, in code compiled with (DEBUG 2) or higher
964 * improvement: support for executable cores on NetBSD (thanks to
966 * new feature: added a RESTART-FRAME debugger command
967 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
968 be used to provide an implementation for FILE-POSITION on Gray streams
969 (thanks to Eric Marsden)
970 * new feature: add syslog, openlog and closelog support to SB-POSIX
971 (thanks to Richard Kreuter)
972 * optimization: the function call overhead in code compiled with
973 a high DEBUG optimization setting is significantly
974 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
975 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
976 (thanks to Tony Martinez)
977 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
978 evaluated once (reported by Kevin Reid)
979 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
980 works again (thanks to Kilian Sprotte)
981 * bug fix: an error is signaled for tagbodies with duplicate tags
982 (thanks to Stephen Wilson)
983 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
984 * bug fix: Win32 port can now handle foreign code unwinding Lisp
985 stack frames from alien callbacks.
986 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
987 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
988 65k pages (thanks to David Woodhouse)
989 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
991 changes in sbcl-1.0.1 relative to sbcl-1.0:
992 * new platform: FreeBSD/x86-64, including support for threading.
993 * new feature: the compiler stores cross-referencing information
994 about function calls (who-calls), macroexpansion (who-macroexpands)
995 and special variables (who-binds, who-sets, who-references) for code
996 compiled with (< SPACE 3). This information is available through the
997 sb-introspect contrib.
998 * new feature: users may subclass SEQUENCE, and have instances of
999 these classes interoperate with standard Common Lisp functions if
1000 a number of methods are defined. (This feature is experimental
1001 and the interface subject to change based on feedback from SBCL
1002 users and the general community)
1003 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1004 x86/x86-64, rather than the previous fixed depth of 8
1005 * improvement: another pthread back-end of mutex "pthread-futex".
1006 * bug fix: non-ascii command-line arguments are processed correctly
1007 (thanks to Yaroslav Kavenchuk)
1008 * bug fix: non-required arguments were not passed correctly when a method
1009 defined using DEFMETHOD was called from a mop-generated method using
1010 CALL-NEXT-METHOD (reported by Pascal Costanza)
1011 * bug fix: recursion is now permitted in accessors through
1012 SLOT-UNBOUND. (reported by Pascal Costanza)
1013 * bug fix: an error was signaled at startup if the HOME environment
1014 variable was defined, but had an empty value (reported by Peter Van Eynde)
1015 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1016 signal a PROGRAM-ERROR, not a BUG.
1017 * bug fix: SB-POSIX:READDIR works when built with large file support.
1018 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1020 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1021 for better automatic indentation support. (thanks to Matt Pillsbury)
1022 * optimization: loading generic functions no longer takes O(n^2) time,
1023 proportional to the amount of methods in the generic function
1024 (reported by Todd Sabin and Jeremy Brown)
1025 * optimization: the FIND and POSITION family of sequence functions
1026 are significantly faster on arrays whose element types have been
1028 * improvements to the Windows port:
1029 ** Intermittent heap corruption problems have been fixed. (thanks
1030 to Alastair Bridgewater)
1031 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1033 ** Lisp is able to unwind foreign exception frames from alien
1034 callbacks. (thanks to Alastair Bridgewater)
1036 changes in sbcl-1.0 relative to sbcl-0.9.18:
1037 * improvement: experimental support for threading on FreeBSD/x86.
1038 (thanks to NIIMI Satoshi)
1039 * improvement: runtime option --dynamic-space-size can be used
1040 to set the size of the dynamic space reserved on startup.
1041 * improvement: floating point modes in effect are now saved in
1042 core, and restored on startup.
1043 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1044 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1045 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1046 threads are not running after *SAVE-HOOKS* have run.
1047 * improvement: writes to CLOS instance slots are type-checked in code
1048 compiled with (SAFETY 3)
1049 * improvement: floating-point exception handling on FreeBSD (thanks to
1051 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1052 (thanks to Zach Beane)
1053 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1055 * improvement: added support for the Shift-JIS external format.
1056 (contributed by NIIMI Satoshi)
1057 * improvement: callbacks are supported on Linux/PPC. (thanks to
1059 * bug fix: compiler bug triggered by a (non-standard) VALUES
1060 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1061 * bug fix: file compiler no longer confuses validated and already
1062 dumped structurres. (reported by Kaersten Poeck)
1063 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1064 fill-pointer signals a type-error as required. (thanks to
1066 * bug fix: disassemly of funcallable instances works.
1067 * bug fix: single stepping on PPC.
1068 * bug fix: fix thread-safety problems in the type system (generally
1069 manifesting as nonsensical errors like "STRING is a bad type specifier
1070 for sequences" or "The value 1 is not of type FIXNUM")
1071 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1072 (reported by Josip Gracin)
1073 * bug fix: an error is signaled for attempts to displace arrays with
1074 incompatible element types (thanks to Mario Mommer)
1075 * bug fix: more correct handling of wide characters in debug info
1076 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1077 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1078 and don't cause extra consing
1079 * optimization: MAP and MAP-INTO are significantly faster on vectors
1080 whose elements types have been declared.
1081 * Improvements to SB-SPROF:
1082 ** Support for allocation profiling
1083 ** Reduced profiling overhead, especially for long profiling runs
1084 * Improvements to the Windows port:
1085 ** floating point exceptions are now reported correctly.
1086 ** stack exhaustion detection works partially.
1087 ** more accurate GET-INTERNAL-REAL-TIME.
1088 ** better RUN-PROGRAM behaviour in case of errors in the child
1090 ** PROBE-FILE now simplifies pathnames correctly.
1091 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1092 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1093 1st 1970 (although time timezone data will be unreliable).
1094 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1096 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1097 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1098 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1100 * bug fix: two potential GC deadlocks affecting threaded builds.
1101 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1102 returns T (reported by Anton Kazennikov)
1103 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1104 with non-variable places
1105 * bug fix: remove a race condition in the setting of
1106 funcallable-instance functions, this should make threaded CLOS
1107 code more stable against memory faults.
1108 * bug fix: corruption of specials when unbinding is interrupted by an
1109 asynchronous unwind (reported by Hannu Koivisto)
1110 * improvement: the debugger will now also display local variables that
1111 are only used once, for code compiled with a DEBUG optimization quality
1114 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1115 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1116 * incompatible change: External-format support for FFI calls. The
1117 SB-ALIEN:C-STRING no longer implies an ASCII
1118 external-format. Instead the string is subject to external-format
1119 conversion. Additionally return values of type SB-ALIEN:C-STRING
1120 are by default of type (SIMPLE-ARRAY CHARACTER), not
1121 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1122 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1123 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1124 * incompatible change: SB-EXT package no longer contains the
1125 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1126 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1128 * incompatible change: the single-stepper is no longer available
1129 on Alpha, Mips and Sparc platforms.
1130 * minor incompatible change: the direct superclasses of
1131 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1132 not (STANDARD-OBJECT FUNCTION). This makes the
1133 class-precedence-lists of GENERIC-FUNCTION and
1134 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1136 * minor incompatible change: the default stream external format on
1137 non-unicode SBCL is no longer detected from the locale, but is always
1139 * new feature: Add a version of evaluator that uses an interpreter instead
1140 of the compiler. EVAL still uses the compiler by default, to switch it
1141 to use the interpreter, set the value of the variable
1142 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1143 * minor incompatible change: the single-stepper REPL has been merged
1144 with the normal debugger (see the "Stepping" heading of the debugger help
1145 for more details). The debugger command STEP will no longer switch
1146 to the single-stepper REPL.
1147 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1148 for a type now works.
1149 * bug fix: loading of default sysinit file works. (thanks to Leonid
1151 * bug fix: better detection of circularities in the file-compiler.
1152 (reported by Marco Monteiro)
1153 * bug fix: the CL pathname functions now work with files that have
1154 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1155 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1156 systems with Unix98 pty semantics.
1157 * bug fix: ASDF-INSTALL will now work with bsd tar.
1158 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1160 * bug fix: timers expiring in dead threads no longer cause a
1161 type-error (reported by Paul "Nonny Mouse").
1162 * bug fix: thanks to more lightweight single-stepper instrumentation,
1163 code compiled with (DEBUG 3) will compile and execute significantly faster,
1164 and will have more accurate type-inferencing than before
1165 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1166 whose bindings are modified
1167 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1168 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1169 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1170 CL:SOFTWARE-VERSION with proper version
1172 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1173 * feature: implemented the READER-METHOD-CLASS and
1174 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1175 as specified by AMOP.
1176 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1178 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1179 (thanks to Lutz Euler)
1180 * optimization: hashing of general arrays and vectors has been
1181 improved. (reported by Any Fingerhut)
1182 * enhancement: SB-INTROSPECT is now able to find definitions of
1183 profiled functions. (thanks to Troels Henriksen)
1184 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1185 as well, allowing compiler-macros for SETF-functions to expand.
1186 * enhancement: step-instrumentation no longer wraps known
1187 single-value functions with multiple-value context, allowing
1188 better type inference.
1189 * fixed bug #337: use of MAKE-METHOD in method combination now works
1190 even in the presence of user-defined method classes. (reported by
1191 Bruno Haible and Pascal Costanza)
1192 * fixed bug #339(c): if there are applicable methods not part of any
1193 long-form method-combination group, call INVALID-METHOD-ERROR.
1194 (reported by Bruno Haible)
1195 * fixed bug #361: the :FUNCTION initarg in the protocol for
1196 initialization of methods can now be used to override
1197 internally-produced optimized functions. (reported by Bruno
1199 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1200 system-provided lambda expression no longer cause warnings about
1201 unbound #:|pv-table| symbols.
1202 * bug fix: improved the handling of type declarations and the
1203 detection of violations for keyword arguments with non-constant
1205 * bug fix: potentially erronous calls to PATHNAME and
1206 MERGE-PATHNAMES were being flushed in some cases.
1207 (reported by Richard Kreuter)
1208 * bug fix: compiled calls to TYPEP were mishandling obsolete
1209 instances. (reported by James Bielman and Attila Lendvai)
1210 * bug fix: format strings with ~> without matching ~< no longer
1211 trigger an AVER, but signal an understandable error instead.
1212 (reported by Antonio Martinez)
1213 * bug fix: specifying an output-file without a pathname-type for
1214 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1215 of input-file instead of "fasl". (reported by Robert Dodier)
1216 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1217 (reported by James Y Knight).
1218 * bug fix: compiler-macros-function did not consider the environment
1219 argument for shadowing by local functions.
1220 * bug fix: compiler-macros expansion was inhibited by local INLINE
1222 * bug fix: inline expansions of known functions were subject to
1223 step-instrumentation in high debug policies, leading to problems
1224 with type-inference.
1225 * bug fix: compiler failed to differentiate between different CONS
1226 types in some cases.
1227 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1228 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1229 * bug fix: #368: incorrect use of expressed vs. upgraded array
1231 * bug fix: #306a: more precise unions of array types.
1232 * thread-safety improvements:
1233 ** CONDITION-WAIT could return early on Linux, if the thread was
1234 interrupted and subsequently continued with SIGCONT.
1235 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1237 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1238 * added support for the ucs-2 external format. (contributed by Ivan
1240 * minor incompatible change: pretty printing of objects of type
1241 (cons symbol) is, in the default pprint-dispatch-table, now
1242 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1244 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1245 called later in a class's lifetime, possibly as late as when the
1246 first instance of the class is created. Previously,
1247 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1248 class became finalizeable.
1249 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1250 for multibyte external-format streams. (thanks to "vbzoli")
1251 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1252 with :ALLOCATION :CLASS inherited from superclasses of the
1254 * fixed bug: anonymous classes can now be created using the :NAME
1255 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1256 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1257 * fixed bug: core-files saved with :EXECUTABLE T can again be
1258 executed when SBCL_HOME isn't set. (reported by James Knight)
1259 * fixed bug: toplevel LOCALLY forms with declarations could
1260 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1261 * fixed bug: printing from several different threads using different
1262 values of *print-case* could cause invalid output, due to
1263 some internal special variables of the printer not being bound
1264 thread-locally (reported by Max Mikhanosha)
1265 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1266 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1267 (reported by Pascal Costanza)
1268 * fixed bug: FINALIZE-INHERITANCE is called from
1269 REINITIALIZE-INSTANCE on classes when the class has previously
1270 been finalized, as required by AMOP.
1271 * minor code generation optimizations:
1272 ** better register allocation in CLOS dispatching functions
1273 ** overflow detection when coercing signed bytes to fixnums on x86-64
1274 ** is now implemented with one IMUL instruction instead of three shifts
1275 ** more efficient bit-vector access on x86 and x86-64
1276 ** more efficient access to raw structure slots on x86 and x86-64
1277 * fixed some bugs revealed by Paul Dietz' test suite:
1278 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1279 return its argument.
1281 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1282 * feature: thread support on Solaris/x86, and experimental thread support
1284 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1286 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1287 default method for SLOT-UNBOUND.
1288 * minor incompatible change: prevent the user from specializing the
1289 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1290 somewhat counter to the intent of the protocol, I (CSR) think, and
1291 additionally it just doesn't work in SBCL as currently
1292 implemented, thanks to optimizations (that are always valid for
1293 the other three SLOT-VALUEish functions, but not for the setter).
1294 * minor incompatible change: the :SB-LDB feature is now enabled by
1295 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1296 the low-level debugger.
1297 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1298 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1299 down to an SB-SYS:FD-STREAM, allowing direct communication in
1300 more cases. Temporary files and pipes are still used as a fallback
1302 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1303 on the non-reentrant C functions localtime(3) and gmtime(3).
1304 * bug fix: global optimization policy was not visible in LOCALLY and
1306 * bug fix: class objects can be used as specializers in methods.
1307 (reported by Pascal Costanza)
1308 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1309 with a type error. (reported by blitz_ on #lisp)
1310 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1311 failed with a type error. (reported by Pascal Bourguignon)
1312 * bug fix: merging pathnames against defaults with :DIRECTORY
1313 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1314 (reported by James Y Knight)
1315 * bug fix: saving large (>2GB) cores on x86-64 now works
1316 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1317 constant index and a (simple-array (signed-byte 32)) array
1318 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1319 error (patch by Robert J. Macomber)
1320 * feature: TIME now displays the amount of run-time spent in GC
1321 * bug fix: The debugger now does a better job of respecting
1322 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1323 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1324 workaround for bug 403.)
1325 * bug fix: floating point exception handling now works on FreeBSD
1326 (thanks to NIIMI Satoshi)
1327 * fixed some bugs revealed by Paul Dietz' test suite:
1328 ** MISC.641: LET-conversion were not supposed to work in late
1330 * improvements to the Win32/x86 port:
1331 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1332 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1334 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1335 * new feature: source path information is generated for macro-expansion
1336 errors for use in IDE's like Slime (thanks to Helmut Eller)
1337 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1338 * bug fix: compiler does not loop forever on an invalid type in
1340 * improvement: compilation of most CLOS applications is significantly
1342 * optimization: added a limited bytecode compiler for simple toplevel
1343 forms, speeding up compilation and FASL loading
1344 * bug fix: the statistical profiler now properly distinguishes anonymous
1347 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1348 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1349 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1350 into subclasses of the finalized class. Now user calls to
1351 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1352 system return before any subclasses are finalized.
1353 * minor incompatible change: The reader no longer ignores errors
1354 regarding non-existent packages in #+ and #- feature tests.
1355 * new feature: command line options --no-sysinit, --no-userinit to
1356 inhibit loading the corresponding init files
1357 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1358 for sending data through UDP sockets (thanks to François-René Rideau)
1359 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1360 error is signalled instead (thanks to François-René Rideau)
1361 * minor incompatible change: Error signalling behaviour of lexical
1362 operations violating package locks has changed slightly. Refer to
1363 documentation on package locks for details.
1364 * enhancement: EVAL can process IF-expressions without resorting to the
1366 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1367 constant-folded properly due to missing out-of-line functions.
1368 (reported by Mika Pihlajamäki)
1369 * bug fix: LISTEN sometimes returned T even in cases where no data was
1370 immediately available from the stream
1371 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1372 were reversed. (reported by Levente Mészáros)
1373 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1374 when given a vector displaced to an adjustable array. (reported
1376 * bug fix: derivation of float boundaries from numbers outside the
1377 appropriate float range (reported by John Wiseman)
1378 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1380 * bug fix: precomputing cache entries for generic functions with
1381 some subclasses of specializers as yet invalid does not attempt to
1382 fill a cache line with a negative offset. (reported by Levente
1384 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1385 allow condition class objects as arguments to DOCUMENTATION and
1386 (SETF DOCUMENTATION); only find and set documentation for
1387 structure names for the STRUCTURE doc-type. (suggested by Gary
1389 * improvements to the Win32/x86 port:
1390 ** (user-homedir-pathname) and default initialization file
1391 locations now know about the user's "Documents and Settings"
1392 directory (thanks to Yaroslav Kavenchuk)
1393 ** run-program is implemented (thanks to Mike Thomas)
1394 ** sockets support (thanks to Timothy Ritchey)
1395 ** better backtrace support (thanks to Alastair Bridgewater)
1396 ** sb-grovel supported
1397 ** asdf-install and sb-posix work somewhat
1398 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1399 * improvements to the Solaris/x86 port:
1400 ** works on Solaris 11/Solaris Express
1401 ** floating-point exception handling support
1402 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1403 * fixed some bugs revealed by Paul Dietz' test suite:
1404 ** REMOVE-METHOD returns its generic function argument even when
1405 the method is not one of the generic functions' methods.
1406 ** objects declared as MEMBER types can be admissible arguments to
1407 structure accessors.
1408 ** printing characters should simply be printed by the FORMAT ~:C
1410 ** compiler failure when compiling functions with hairy constant
1411 defaults for optional parameters.
1412 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1413 function, which is already optimized.
1415 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1416 * new platform: experimental support for SBCL x86/Darwin, including
1417 MacOS X 10.4.5 on Intel.
1418 * new feature: Unicode character names are now known to the system
1419 (through CHAR-NAME and NAME-CHAR).
1420 * new feature: the filesystem location of SBCL's core file is
1421 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1422 * minor incompatible change: the contrib modules SB-POSIX and
1423 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1424 this change is to make it easier to distribute
1425 location-independent binaries.
1426 * bug fix: as implied by AMOP, standardized classes no longer have
1427 slots named by external symbols of public packages. (reported by
1429 * optimization: calling functions via constant symbols -- as in
1430 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1431 via the function object as in (FUNCALL #'FOO).
1432 * optimization: on x86 and x86-64, the calling convention for the
1433 case of dealing with an unknown number of values has been altered
1434 to be friendlier to the prediction heuristics implemented,
1435 particularly with reference to CALL and RET pairing. (thanks to
1436 Alastair Bridgewater)
1437 * optimization: on x86, the code for access to thread-local symbol
1438 values and binding/unbinding of thread-local symbols is smaller.
1439 (thanks to Alastair Bridgewater)
1440 * enhancement: CONSTANTP is now able to determine constantness of
1441 more complex forms, including calls to constant-foldable standardized
1442 functions and some special forms beyond QUOTE.
1443 * fixed bug: occasional GC crashes on Solaris/x86
1444 * optimization: x86-64 supports stack allocation of results of simple
1445 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1446 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1447 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1448 (thanks to James Knight)
1449 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1450 by the standard (thanks to Stephen Compall)
1452 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1453 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1454 be used for bundling the runtime and the core file into one
1455 executable binary. This feature is not currently supported on all SBCL
1456 platforms. (thanks to James Bielman and NIIMI Satoshi)
1457 * new feature: a generational or ephemeral garbage collector is now
1458 the default on the PowerPC platform (both Linux and Darwin). The
1459 old Cheney (stop and copy) collector is a build-time option.
1460 (thanks to Cyrus Harmon, after Raymond Toy)
1461 * minor incompatible change: the method by which SBCL finds its
1462 contributed modules has changed; it no longer relies on symbolic
1463 links from an $SBCL_HOME/systems directory, but searches directly
1464 in the subdirectories of $SBCL_HOME.
1465 * enhancement: the dynamic heap size on the Linux/PPC platform is
1466 markedly larger, even using the older Cheney garbage collector.
1467 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1468 certain complicated string types. (reported by Gary King)
1469 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1470 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1471 * fixed bug: DOCUMENTATION on structures no longer signals an
1472 error if no structure type of the right name exists. (reported by
1474 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1475 applicable non-standard primary or :AROUND method on
1476 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1477 no longer cause unbound variable errors. (reported by Kevin Reid)
1478 * fixed bug: metacircle resolution in cases where methods have slots
1479 added before the slots from STANDARD-METHOD. (reported by Jean
1481 * fixed bug: the Power PC assembly code for calling into lisp
1482 sometimes computed its return address wrongly (depending on the
1483 15th bit of the address, fixed at link time). This used to
1484 manifest itself in a segmentation violation while building PCL.
1485 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1486 many others over the years)
1487 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1488 the stack pointer (treated as a signed integer) is negative.
1489 (thanks to Peter van Eynde)
1491 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1492 * new platform: experimental support for the Windows operating
1493 system has been added. (thanks to Alastair Bridgewater)
1494 * fixed several bugs in and robustified the PPC FFI (including
1495 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1496 * bug fix: allow non-simple string symbol names (reported by Paul
1498 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1500 * bug fix: saving a core corrupted callbacks on x86/x86-64
1501 * bug fix: closed a loophole in metacircularity detection and
1502 grounding in the PCL implementation of CLOS.
1503 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1504 (reported by tomppa on #lisp)
1505 * bug fix: clear the direction flag on Lisp -> C transitions, as
1506 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1507 (reported by Andrej Grozin and Hendrik Maryns)
1508 * optimization: major improvements to GC efficiency on GENCGC platforms
1509 * optimization: faster implementation of EQUAL
1510 * optimization: emit more efficient opcodes for some common
1511 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1512 * optimization: several other minor code-generation improvements on x86-64
1513 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1515 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1516 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1517 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1518 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1519 by ANSI as a generic function, and for consistency (SETF
1520 GENERIC-FUNCTION-NAME) is treated likewise.
1521 * fixed bug #233.b: make constraint propagation notice when a variable
1522 value is changed after it is referenced but before it is used
1523 * fixed bug #296: no more arbitrary behaviour from filenames with
1524 odd characters as --load arguments. (reported by Adam Warner)
1525 * fixed bug #390: :CHARACTER-SET pathname components now work as
1526 expected. (reported by Tim Daly Jr)
1527 * fixed bug #391: complicated :TYPE intersections in slot
1528 definitions no longer cause an error in PCL internals.
1529 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1530 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1531 returning the number of octets which would be written to the
1532 file-stream. (thanks to Robert J. Macomber)
1533 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1534 arguments to the internal stream functions. (thanks to David
1536 * bug fix: stack exhaustion is now handled on the x86/SunOS
1537 platform. (thanks to Daisuke Homma)
1538 * bug fix: more accurate ROOM results on GENCGC platforms
1539 * optimization: improved type inference for arithmetic-for
1540 index variables in LOOP
1541 * optimization: faster floating-point SQRT on x86-64
1542 * fixed some bugs revealed by Paul Dietz' test suite:
1543 ** DOCUMENTATION returns NIL instead of "" for method combinations
1544 that don't have a docstring
1546 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1547 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1548 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1549 therefore are not customizeable by user code (as seems to be at
1550 least permitted and maybe required by AMOP). As a consolation,
1551 however, the SBCL implementation of these functions now calls
1552 REINITIALIZE-INSTANCE as specified by AMOP.
1553 * bug fix: slot-definition documentation is propagated as per ANSI
1554 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1555 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1556 argument, as do eslotd initialization methods. (from Pascal
1557 Costanza's "Closer" project)
1558 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1559 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1561 * bug fix: it is now possible to have more than one subclass of
1562 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1563 (reported by Bruno Haible, Pascal Costanza and others)
1564 * bug fix: the dependent update protocol now works for generic
1565 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1566 and Pascal Costanza)
1567 * bug fix: condition-class instances corresponding to
1568 DEFINE-CONDITION forms are now created eagerly. (reported by
1569 Kalle Olavi Niemitalo on comp.lang.lisp)
1570 * bug fix: floating point printing is more accurate in some
1571 circumstances. (thanks to Simon Alexander)
1572 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1573 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1574 * bug fix: callbacks on OS X now preserve stack-alignment.
1575 (thanks to Cyrus Harmon)
1576 * enhancement: the x86-64 disassembler is much better at
1577 disassembling SSE instructions. (thanks to Lutz Euler)
1578 * enhancement: CHECK-TYPE on a variable now allows type-inference
1579 (thanks to Vincent Arkesteijn)
1580 * optimization: improved performance of EUC-JP external format.
1581 (thanks to NIIMI Satoshi)
1582 * optimization: performance improvements to IO on file streams of
1583 :ELEMENT-TYPE CHARACTER
1584 * optimization: much faster memory allocation on x86-64
1585 * optimization: faster garbage collections (latency and throughput)
1587 * optimization: faster bignum subtraction and division on x86 and x86-64
1588 (thanks to Lutz Euler)
1589 * optimization: more accurate type-inference for loops that use a
1590 floating point index variable or a negative step.
1592 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1593 * bug fix: add a workaround to SBCL looping infinitely at startup on
1594 Linux kernels with apparently buggy implementations of personality().
1595 (thanks to Svein Ove Aas)
1596 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1597 (thanks to David Lichteblau)
1598 * bug fix: local bindings shadow global symbol macros for
1599 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1600 * optimization: non-open coded uses of numeric comparison operators
1601 (e.g. >) no longer cons when called with more than one parameter
1602 on platforms supporting dynamic-extent allocation.
1603 * enhancement: saving cores with foreign code loaded is now supported
1604 on MIPS/Linux in addition to the previously supported platforms.
1605 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1606 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1607 * bug fix: division by zero in sb-sprof when no samples were collected
1608 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1609 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1610 (thanks to Alexander Kjeldaas)
1611 * new feature: ignoring the return values of destructive functions
1612 like NREVERSE signals a compile-time style-warning.
1613 (thanks to Kevin Reid)
1614 * new feature: the alignment of alien structure fields can be
1615 explicitly specified. (thanks to Cyrus Harmon)
1616 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1617 and dump core on SIGQUIT
1619 ** incompatible change: threads do not inherit values of specials
1620 from their parents (see manual)
1621 ** bug fix: threads stacks belonging to dead threads are freed by the
1622 next exiting thread, no need to gc to collect thread stacks anymore
1623 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1624 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1625 ** bug fix: dynamic variable and thread start related gc lossage
1626 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1628 * fixed some bugs revealed by Paul Dietz' test suite:
1629 ** SUBTYPEP is slightly more accurate on heinously complicated
1630 CONS types where some of the members have uncertain (in the
1631 NIL, NIL sense) type relationships to each other.
1633 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1634 no longer purified unless :PURIFY T is explicitly specified.
1635 ** Non-purified cores are significantly smaller than before
1637 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1638 * new feature: timers based on Zach Beane's excellent timer package
1639 * added support for the following external formats: koi8-u,
1640 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1641 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1642 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1643 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1644 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1645 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1646 * incompatible change: a threaded SBCL will no longer revert to
1647 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1648 * bug fix: interrupts are disabled until startup is complete; no
1649 more sigsegvs when receiving a signal to soon
1650 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1652 * bug fix: add a workaround for the memory randomization features in
1653 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1654 workaround will only be in effect on systems with the proc filesystem
1656 * bug fix: printing objects of type HASH-TABLE signals a
1657 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1659 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1660 have been running for over 50 days. (reported by Gilbert Baumann)
1661 * bug fix: the logic for getting names of functions gets less
1662 confused when confronded with alternate-metaclass
1663 funcallable-instances. (reported by Cyrus Harmon)
1664 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1665 consistent, even on internal alternate-metaclass objects.
1666 * bug fix: flush closure information collected by physical
1667 environment analysis prepass before the main pass. (bug reported
1669 * bug fix: compiler pack phase does not modify a hashtable, which is
1670 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1671 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1672 may be expanded. (reported by Alexander <malishev> on c.l.l)
1673 * bug fix: no more style-warnings when compiling code using LAST
1674 under high-SPEED low-SPACE settings. (reported by David Wallin
1676 * fixed some incompatibilities between SBCL's MOP and the MOP
1678 ** the METAOBJECT class is now implemented;
1679 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1680 STANDARD-OBJECT, as required;
1681 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1682 now compatible (as required by VALIDATE-SUPERCLASS); there
1683 remains a consistency requirement over the presence or absence
1684 of the FUNCTION class in the superclass list of finalized
1685 classes; see the manual for more details;
1686 ** the :AROUND method for COMPUTE-SLOTS on
1687 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1688 requested slot ordering.
1690 ** bug fix: parent thread now can be gc'ed even with a live
1692 ** bug fix: binding a special with PROGV to no value is not
1693 the same as that symbol not having been bound (thanks to
1695 ** bug fix: binding specials is thread safe (thanks to
1697 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1698 and SB-SPROF do not die with 'no handler for signal XX in
1699 interrupt_handle_now(..)' anymore
1700 ** bug fix: WITH-TIMEOUT works with multiple running threads
1701 * fixed some bugs revealed by Paul Dietz' test suite:
1702 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1703 the :method-class keyword argument.
1705 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1706 * new port: the Solaris operating system on x86 processors is now
1707 mostly supported, though some rough edges in the environment
1708 remain. (thanks to Daisuke Homma)
1709 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1710 space for its heap. (thanks to Thiemo Seufer)
1711 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1712 closures. (thanks to Thiemo Seufer)
1713 * minor incompatible change: eof selects abort in the debugger.
1714 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1715 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1717 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1718 deprecated, and will go away in a future revision of SBCL.
1719 * minor incompatible change: GC-ON and GC-OFF are no longer
1720 implemented with a counter, it does not matter how many times gc
1721 is switched on or off
1722 * bug fix: discriminating functions for generic function classes
1723 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1724 make invalid assumptions about method precedence order. (reported
1726 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1727 platforms. (thanks to Thiemo Seufer)
1728 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1729 * bug fix: correct pathname printing with printer escaping is on.
1730 (thanks to Kevin Reid)
1731 * bug fix: complex VOP definitions in "user-space" no longer trigger
1732 package locks. (reported by Zach Beane)
1733 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1734 for funcallable-instance functions, and is no different from
1736 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1737 characters in the current readtable. (reported by Nicholas Neuss)
1738 * bug fix: SUBTYPEP on various CONS types returns more a more
1739 accurate acknowledgment of its certainty.
1740 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1741 lists in some cases. This partially fixes bug 384.
1742 * flush all standard streams before prompting in the REPL and the
1744 * bug fix: signal handling and triggering gc do not conflict
1745 directly anymore, in particular a high frequency sb-sprof does
1746 not prevent gc from running
1747 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1748 approximation for timezone and DST information between the
1749 universal time epoch and the smallest negative 32-bit time_t.
1750 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1751 year 1899 so long as the encoded time is non-negative.
1752 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1753 the correct answer for non-constant rotate amounts when performing
1754 an inline 32-bit rotation.
1756 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1757 there is only one thread in the session
1758 ** bug fix: memory leak for streams created in one thread and
1759 written to in another
1760 ** bug fix: lockup when compiled with gcc4
1761 ** bug fix: race that allows the gc to be triggered when gc is
1763 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1764 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1766 ** bug fix: finished threads are gc'ed properly
1767 * fixed some bugs revealed by Paul Dietz' test suite:
1768 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1769 has arguments with a different set of applicable methods from
1770 the orignal arguments.
1771 ** The type error thrown by MAP now has a correct expected-type
1773 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1774 name a compiled function.
1775 ** Three MISC tests where a large bignum was improperly coerced to
1776 a float that couldn't represent that bignum during type
1777 derivation were fixed.
1778 ** SUBTYPEP can now handle types involving the negation of a
1779 list-form FUNCTION type.
1780 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1781 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1782 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1784 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1785 * New feature: Experimental support for bivalent streams: streams
1786 opened with :element-type :default now allow character and binary
1787 (unsigned-byte 8) I/O
1788 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1789 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1791 * bug fix: no more highly sporadic "couldn't check whether ~S is
1792 readable" when reading a stream and an interrupt hits in the middle
1793 of a select system call
1794 * compiler better recognizes complex arrays (reported by Eduardo
1796 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1797 for variables on SBCL built with linkage-tables. (reported by Luis
1799 * various error reporting improvements.
1800 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1801 (Thanks to Thiemo Seufer)
1802 * bug fix: nested reader invokations work correctly
1803 * bug fix: it is possible to have simultaneous references to foreign
1804 code and foreign data with the same name.
1806 ** added x86-64 support
1807 ** incompatible change: the threading api now works with thread
1808 objects instead of thread ids
1809 ** bug fix: threads are protected from signals and interruption when
1810 starting up or going down
1811 ** bug fix: a race where an exiting thread could lose its stack to gc
1812 ** bug fix: don't halt on infinite error in threads if possible
1813 ** fixed numerous gc deadlocks introduced in the pthread merge
1814 ** bug fix: fixed thread safety issues in read and print
1815 ** bug fix: debugger doesn't hang on session lock if interrupted at
1816 an inappropriate moment
1817 ** bug fix: run-program is now thread safe(r)
1818 ** bug fix: inner with-recursive-lock no longer releases the mutex
1819 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1820 * fixed some bugs revealed by Paul Dietz' test suite:
1821 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1822 EXPECTED-TYPE slots filled.
1823 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1825 ** MAKE-CONDITION accepts classes as type-designators.
1826 ** COMPILE may never return NIL.
1827 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1828 range before calling Unix time functions
1830 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1831 * numerous signal handling fixes to increase stability
1832 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1833 * minor incompatible change: we now correctly canonize default
1834 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1835 as per the MOP, rather than the historical (INITARG INITFUNCTION
1836 INITFORM). (reported by Bruno Haible)
1837 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1838 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1839 for more information.
1840 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1841 pathname is a directory pathname.
1842 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1843 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1845 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1846 :METACLASS argument in addition to a class name. (reported by
1847 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1848 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1849 (reported by Bruno Haible; patch from Gerd Moellmann)
1850 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1852 * bug fix: more cleanups to the floating point exception handling on
1853 x86-64 (thanks to James Knight)
1854 * bug fix: the compiler does not try to constant fold calls of
1855 COERCE and BIT-* functions when they return freshly constructed
1856 objects. (reported by Nikodemus Siivola and Paul Dietz)
1857 * optimization: improved the MIPS versions of generic (in the
1858 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1859 * optimization: direct conversion of (unsigned-byte 32) to floats on
1860 the PowerPC platform.
1861 * optimization: structure instances with raw slots now use less
1862 memory, and probably show better memory locality. (thanks to
1864 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1865 are treated as requests for stack allocation on the x86-64,
1866 Alpha-32, PPC and SPARC platforms.
1867 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1868 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1869 (thanks to Tony Martinez)
1871 ** gcing a dead thread can no longer lead to lockups
1872 ** threads block signals until they are set up properly
1873 ** errno is no longer shared by threads
1874 ** interrupt-thread restores the eflags register on x86
1875 ** fixed some lockups due to gc/thread interaction
1876 * fixed some bugs revealed by Paul Dietz' test suite:
1877 ** invalid dotted lists no longer raise a read error when
1878 *READ-SUPPRESS* is T
1879 ** signal an error if a symbol that names a declaration is used
1880 as the name of a type, or vice versa
1881 ** allow using the (declare (typespec var*)) abbreviation for
1882 (declare (type typespec var*)) with all type specifiers
1883 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1884 ** always return NIL from PPRINT-POP when OBJECT is NIL
1885 ** don't signal errors when pretty-printing malformed LABELS,
1886 FLET or MACROLET forms
1887 ** declarations in a DOLIST body are also in scope for the
1889 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1891 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1894 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1895 * fixed cross-compiler leakages that prevented building a 32-bit
1896 target with a 64-bit host compiler.
1897 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1898 opened with :IF-EXISTS :OVERWRITE.
1899 * fixed bug 281: error for an invalid qualifier in a short-form method
1900 combination method is not signalled until the faulty method is called.
1901 * bug fix: iteration variable type inferrer failed to deal with open
1902 intervals. (reported by Alan Shields)
1903 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1904 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1905 or more runtime options were provided to the sbcl binary.
1906 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1907 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1908 * optimization: there's now a fast-path for fixnum arguments in the
1909 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1910 * optimization: the code generated on x86-64 is more compact thanks
1911 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1912 * bug fix: floating-point exception handling now partly works on
1913 x86-64. (Thanks to James Knight)
1914 * improvement to the MIPS backend from Thiemo Seufer: C-style
1915 64-bit long long arguments and return values to alien functions
1917 * fixed some bugs revealed by Paul Dietz' test suite:
1918 ** the type-error signalled from WARN has a filled-in DATUM slot.
1919 ** the type-error required when a stream is not associated with
1920 a file has the stream as its datum.
1921 ** type-errors on single-floats on x86-64 no longer have
1922 :INVALID-OBJECT as the datum
1923 ** the type-errors signalled for invalid function names now have
1924 a correct expected type
1925 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1926 for structures defined with a :TYPE. Documentation strings for
1927 typed structures are no longer immediately discarded
1928 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1929 broadcast streams and synonym streams. FILE-LENGTH now also works
1930 on broadcast streams.
1932 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1933 * incompatible change: the --noprogrammer option, deprecated since
1934 version 0.7.5, has been removed. Please use the equivalent
1935 --disable-debugger option instead.
1936 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1938 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1939 inoperational for a while now) has been completely removed.
1940 * null lexical environments are now printed as #<NULL-LEXENV>,
1941 significantly reducing the amount of clutter in typical backtraces.
1942 * documentation on weak pointers, finalization, and after GC hooks
1943 has been added to the manual.
1944 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1945 as other specialized array types, is much faster. SUBSEQ and
1946 COPY-SEQ on such arrays have also been sped up.
1947 * optimization: EQL is now more efficient when at least other argument
1948 is known to be of type (OR FIXNUM (NOT NUMBER)).
1949 * fixed bug: the runtime is now less vulnerable to changes in the
1950 size of the SBCL object on OS X, and virtual memory is reserved for
1951 all spaces that need to be at a fixed address.
1952 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1953 * fixed bug: finalizers and after GC hooks that cause consing are now
1955 * fixed bug: compiler error messages and summaries are now printed to
1956 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1957 * fixed inference of the upper bound of an iteration variable.
1958 (reported by Rajat Datta).
1959 * fixed bug 211e: calling local functions with duplicated constant
1960 keyword argument no longer causes a bogus style warning about an
1962 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1963 ftype declaration to be disregarded. (reported by Dave Roberts)
1964 * fixed bug 373: caused by erronous compilation of references to alien
1965 variables in the runtime on ppc/darwin.
1966 * fixed bug 376: CONJUGATE type deriver.
1967 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1968 (reported by Baughn on #lisp)
1969 * a cross-compiler bug on non-x86 platforms has been identified and
1970 fixed. (thanks to Bruno Haible)
1971 * improvements to the MIPS runtime code for increased stability.
1972 (thanks to Thiemo Seufer)
1973 * increased the maximimum compact environment size to allow
1974 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1975 * partial workaround for bug 135: don't name the function we're
1976 calling for hairy cases of EVAL, so as not to accumulate one environment
1977 entry per call to EVAL. (reported by Kevin Reid)
1978 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1979 * optimization: type testing for non-vector arrays should be faster.
1980 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1982 * bug fix: setting 31st element of a bit vector to zero did not work
1984 * bug fix: redefining a class definition which failed due to a
1985 previous accessor / function clash now works (but see BUGS entry
1986 #380 for more problems in this area). (thanks to Zach Beane)
1987 * the long form of DEFINE-METHOD-COMBINATION disables method group
1988 checking when given a single method group with pattern *. (thanks
1990 * on x86 compiler supports stack allocation of results of simple
1991 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1992 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1993 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1994 * fixed some bugs related to Unicode integration:
1995 ** the restarts for recovering from input and output encoding
1996 errors only appear when there is in fact such an error to
1998 * fixed some bugs revealed by Paul Dietz' test suite:
1999 ** MISC.549 and similar: late transformation of unsafe type
2000 assertions into derived types caused unexpected code
2002 ** SCALE-FLOAT type deriver is less wrong.
2003 ** type derivers for EXP, LOG and similar functions compute result
2004 types for complex arguments better.
2005 ** (MISC.563) CONJUGATE type deriver works for very restricted
2007 ** out-of-line type testers for character strings are available.
2008 ** EQUAL compiler transform understands specialness of objects
2010 ** accessing double-floats stored on the stack now works on x86-64.
2011 ** debugger internals could sometimes create invalid lispobjs,
2012 resulting in GC crashes.
2013 ** MISC.548: type check weakening can convert required type into
2015 ** initialization forms for bindings are not in scope of free special
2018 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2019 * incompatible change: thread support for non-NPTL systems has
2020 been removed - locking is buggy and unreliable. A threaded
2021 SBCL build will now warn at startup and refuse to create
2022 new threads, unless futex support is detected in the kernel
2023 * incompatible change: the top level REPL now has only an ABORT
2024 restart associated with it, not TOPLEVEL and ABORT as it used to.
2025 TOP and TOPLEVEL are now available as debugger commands for
2026 returning to the top level.
2027 * incompatible change: forms evaluated in the REPL now use the
2028 global optimization policy.
2029 * incompatible change: user- and system-initialization files are
2030 no longer processed with LOAD, but by READ and EVAL; hence the
2031 global optimization policy, startup package, readtable, etc,
2033 * The .fasl file format number has been incremented because of
2034 various incompatible changes.
2035 * internal entry point details and argument counts no longer appear
2036 in backtraces unless explicitly requested by setting
2037 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2038 * built-in and standard functions no longer have names like "top
2039 level local call to FOO".
2040 * fixed bug 32: functions defined in non-null lexical environments
2041 now have more legible printed representation
2042 * fixed bug 33: functions defined in non-null lexical environemnts
2043 are now more amenable to inspection by INSPECT.
2044 * workaround for bug 354: XEPs no longer appear in backtraces unless
2045 explicitly requested.
2046 * fixed bug: receiving the signal which results from attempting to
2047 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2048 SIGBUS on other *BSDs) on architectures where the C stack is also
2049 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2050 to debugger confusion or wild instability. (reported by Cheuksan
2052 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2053 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2054 (reported by Lutz Euler)
2055 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2056 compiled code. (reported by Paul Dietz)
2057 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2058 specialized parameter to a method to something that is not TYPEP
2059 the specializer is now possible.
2060 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2061 face of package deletion.
2062 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2063 pathname. (reported by David Tolpin on c.l.l)
2064 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2065 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2066 STRING-STREAM and FILE-STREAM, respectively.
2067 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2068 than previously; in addition, its test suite is now run on build.
2069 (thanks to Luke Gorrie)
2070 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2071 * optimization: added a immediate representation for single-floats
2073 * fixed some bugs revealed by Paul Dietz' test suite:
2074 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2075 ** attempting to create a package with a colliding nickname causes
2076 correctable errors to be signalled.
2077 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2078 ** several x86-64 backend bugs related to sign-extension of immediate
2081 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2082 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2083 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2085 * fixed loading of multiply forward-referenced layouts.
2086 (thanks to Cheuksan Wang)
2087 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2088 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2089 (see COMPILE-FILE documentation for details of :PRINT option)
2090 * fixed bugs 19 and 317: fixed-format floating point printing is
2091 more accurate. This also fixes a bug reported by Adam Warner
2092 related to the ~@F format directive.
2093 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2095 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2096 dispatch table if the from-char is a dispatch macro character.
2097 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2098 by the wordsize no longer ignore the last word. (reported by Lutz
2100 * fixed bug in type checking of dynamic-extent variables. (reported
2102 * optimization: sequence traversal functions use their freedom to
2103 coerce function designators to functions.
2104 * optimization: code with many calls to CLOS methods specialized on
2105 CLOS classes has had redundant type checks removed.
2106 * optimization: added declarations to speed up operations that access
2107 the internal character database (for example STRING-UPCASE)
2108 * optimization: comparison operations between floats and sufficiently small
2109 fixnums no longer create extra rationals
2110 * fixed some bugs related to Unicode integration:
2111 ** portions of multibyte characters at the end of buffers for
2112 character-based file input are correctly transferred to the
2113 start of the buffer at the next read.
2114 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2115 passing it through to OPEN.
2116 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2117 argument given to internal calls to OPEN.
2118 ** the built-in comment readers (introduced by character sequences
2119 ";" and "#|") are more forgiving to encoding errors; they will
2120 STYLE-WARN and then attempt to resync the stream at a character
2121 boundary. (thanks to Teemu Kalvas)
2122 * fixed some bugs in the x86-64 port:
2123 ** Negative short int return values from c-calls are sign-extended
2125 ** The stack is aligned to 16-bytes for c-calls, as required by
2126 the ABI. (thanks to Cheuksan Wang)
2127 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2128 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2129 for enums. (thanks to Vincent Arkesteijn)
2130 ** Multiple small optimizations and bugfixes for floating point
2132 * fixed some bugs revealed by Paul Dietz' test suite:
2133 ** Space, Tab, Linefeed, Return and Page have the invalid
2134 secondary constituent character trait.
2135 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2137 ** WITH-INPUT-FROM-STRING should only update the index place on
2139 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2140 works more reliably.
2141 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2142 with one-dimensional arrays with fill pointers.
2143 ** TYPE-OF failed on a complex with an integer realpart and a
2145 ** compiler failure during type inference for the code of form
2146 (IF (EQL X (THE ...)) ...) (MISC.535).
2148 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2149 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2150 platform. The port supports 61-bit fixnums, large memory spaces
2151 and reloading shared object files.
2152 * enhancement: saving cores with foreign code loaded is now
2153 supported on ppc/Darwin in addition to the previously supported
2155 * enhancement: the statistical profiler now walks deeper into the
2156 call stack for more meaningful call-graphs and accrued time
2157 reports (x86/x86-64 only). It also now reports time spent in
2159 * enhancement: it is now possible to trace most individual methods
2160 of a generic function in addition to tracing the generic function
2162 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2164 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2165 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2166 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2167 produces an error. (thanks to Vincent Arkesteijn)
2168 * bug fix: NAMESTRING on pathnames with :WILD components in their
2169 directories works correctly. (thanks to Artem V. Andreev)
2170 * fixed bug 125: compiler preserves identity of closures. (reported
2172 * bug fixed: functions with &REST arguments sometimes failed with
2173 "Undefined function" when compiled with (DEBUG 3). (reported by
2175 * bug fix: overflow during compiling of setting element of a bit
2176 vector with constant index and value. (reported by Timmy Douglas)
2177 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2178 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2179 * on x86 compiler partially supports stack allocation of dynamic-extent
2181 * GO and RETURN-FROM do not check the extent of their exit points
2182 when compiled with SAFETY 0.
2183 * fixed some bugs related to Unicode integration:
2184 ** encoding and decoding errors are now much more robustly
2185 handled; it should now be possible to recover even from invalid
2186 input or output to the terminal. (thanks to Teemu Kalvas)
2187 ** provided a first cut at implementing STRING-TO-OCTETS and
2188 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2189 ** altered the SB-MD5 contributed module slightly, changing the
2190 interface just enough for it to be supportable for builds where
2191 lisp characters are not eight bits.
2192 * fixed some bugs revealed by Paul Dietz' test suite:
2193 ** the FORMATTER-generated functions for ~V[ conditionals require
2194 the correct number of arguments.
2195 ** READ-FROM-STRING returns the mandated second value when applied
2196 to displaced strings.
2197 ** the #\Rubout and #\Backspace characters are treated as invalid
2198 constituent characters by the tokenizer.
2200 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2201 * new feature: reloading changed shared object files with
2202 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2203 * new feature: references to foreign variables and functions
2204 can now be compiled and loaded before the corresponding shared
2205 object file is loaded, as long as the foreign definitions are
2206 available at runtime.
2207 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2208 supported. (thanks to Dan Debertin)
2209 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2210 just keywords. (thanks to Vincent Arkesteijn)
2211 * fixed bug #331: structure-class instances corresponding to
2212 DEFSTRUCT forms are now created eagerly.
2213 * fixed bug #345: backtraces from calls to undefined functions work
2214 on x86 as well. Related bug #61 is now also partially fixed on x86
2215 (backtraces from throws to unknown catch tags.)
2216 * bug fix: lambda-list parsing is now stricter vrt. order and number
2217 of lambda-list keywords.
2218 * bug fix: as specified by AMOP, an error is signalled if a
2219 class-option appears multiple times in a DEFCLASS form. (reported
2221 * bug fix: RANDOM can be compiled when the compiler derives the type
2222 of its numeric argument as a disjoint set of small integers.
2223 (reported by Paul Dietz)
2224 * bug fix: starting a core saved with shared objects loaded when
2225 those objects are not available no longer causes threaded SBCL to
2226 hang. (reported by Sean Ross)
2227 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2229 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2230 argument, which must always be NIL. (reported by Kalle Niemitalo)
2231 * bug fix: printing 1.0d+23 no longer results in an error.
2232 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2233 * bug fix: structure slot setters preserve evaluation order. (thanks
2235 * fixed some bugs related to Unicode integration:
2236 ** RUN-PROGRAM can allow its child to take input from a Lisp
2237 stream. (reported by Stefan Scholl)
2238 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2239 locales. (reported by Ken Causey)
2240 * fixed some bugs revealed by Paul Dietz' test suite:
2241 ** INCF, DECF and REMF evaluate their place form as specified in
2243 ** FORMATTER expands ~{ ~} iteration directives with V or #
2244 parameters correctly.
2245 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2246 consequent uses no arguments correctly.
2247 ** the system has a partial understanding of the (COMPLEX RATIO)
2249 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2252 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2253 * new feature: a build-time option (controlled by the :SB-UNICODE
2254 keyword feature, enabled by default) for building the system with
2255 support for the entire 21-bit character space defined by the
2257 * new feature: the system now has rudimentary external-format
2258 support; the primary user-visible change at this time is that
2259 characters with the high bit set (such as lower-case-e-acute) will
2260 print correctly to a terminal in a UTF-8 environment.
2261 * minor incompatible change: BASE-CHAR no longer names a class;
2262 however, CHARACTER continues to do so, as required by ANSI.
2263 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2264 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2265 has been moved to the SB-EXT package (temporarily re-exported from
2267 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2268 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2270 * fixed bug #351: better error-handlind and reporting for malformed
2272 * fixed bug #350: bignum-printing is now more memory-efficient,
2273 allowing printing of very large bignums, eg. (expt 2 10000000).
2274 (reported by Bruno Haible)
2275 * fixed bug #302: better primitive-type selection for intersection
2277 * fixed bug #308: non-graphic characters now all have names, as
2278 required. (reported by Bruno Haible)
2279 * bug fix: redefining a class with different superclasses now correctly
2280 removes it from the direct-subclasses of its previous superclasses.
2281 (reported by David Morse)
2282 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2283 new value now works. (reported by Bruno Haible)
2284 * bug fix: correct canonicalization of multiple non-standard slot
2285 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2286 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2287 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2288 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2289 now exists, an signals an error.
2290 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2291 during macroexpansion for non-iteration variables as well. (reported
2292 by Bruno Haible for CMUCL)
2293 * bug fix: Cyclic structures and unprintable objects in compiler
2294 messages no longer cause errors. (reported by Bruno Haible)
2295 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2296 and READ-FROM-STRING all now return a primary value of NIL if
2297 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2298 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2299 (reported by Bruno Haible for CMUCL)
2300 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2301 do not designate a condition. (reported by Bruno Haible for
2303 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2304 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2305 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2306 permitting resolution in favour of any of the conflicting symbols.
2307 (reported by Bruno Haible for CMUCL)
2308 * bug fix: EQUAL compiler optimizations is less aggressive on
2309 strings which can potentially compare true despite having distinct
2310 specialized array element types.
2311 * bug fix: unit enumerations can be defined without dividing by
2312 zero. (thanks to Vincent Arkesteijn)
2313 * FORMAT compile-time argument count checking has been enhanced.
2314 (report from Bruno Haible for CMUCL)
2315 * a partial workaround for the bug 262: the compiler does not try to
2316 inline-expand a local function doing RETURN-FROM from a deleted
2317 BLOCK. (thanks to Peter Denno for the bug report and to David
2318 Wragg for the simple test case)
2319 * fixed some bugs revealed by Paul Dietz' test suite:
2320 ** RENAME-PACKAGE allows all package designators as new package
2322 ** constraint propagation and lambda variable substitution are
2323 more cautious in dealing with partially deleted code.
2324 ** compiler sometimes lost reoptimization passes.
2325 ** CERROR, given a condition as condition designator, passes its
2326 remaining arguments to the continue format control without
2328 ** Case-altering FORMAT directives work correctly on non-ASCII
2330 ** The REAL type specifier handles bounds outside the floating
2331 point ranges without signalling FLOATING-POINT-OVERFLOW.
2332 ** Functions with IR1-transformations can create intercomponent
2333 references to global functions.
2334 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2336 ** FORMAT ~R treats a nil value for its first parameter correctly.
2338 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2339 * enhancement: saving cores with foreign code loaded is now
2340 supported on x86/NetBSD and sparc/Linux in addition to the previously
2341 supported platforms.
2342 * bug fix: on some platforms repeated installations caused multiple
2343 copies of HTML documentation to be installed -- should not happen
2344 any more. (reported by Stefan Scholl)
2345 * bug fix: parsing self-recursive alien record types multiple times
2346 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2347 original patch by Helmut Eller for CMUCL)
2348 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2349 (thanks to Richard Kreuter)
2350 * bug fix: defining classes whose accessors are methods on existing
2351 generic functions in other (locked) packages no longer signals
2352 bogus package lock violations. (reported by François-René Rideau)
2353 * bug fix: special variables as DEFMETHOD parameters no longer have
2354 associated bogus type declarations. (reported by David Wragg and
2356 * bug fix: read-write consistency on streams of element-type
2357 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2358 * bug fix: redefiniton of the only method of a generic function with
2359 no DEFGENERIC no longer emits a full WARNING. In addition,
2360 redefinition of generic functions with no DEFGENERIC to an
2361 incompatible lambda list now signals an error. (thanks to Zach
2363 * bug fix: DEFGENERIC now works even when there's a function of the
2364 same name in an enclosing lexical environment. (thanks to Zach
2366 * fixed compiler failure, caused by instrumenting code during
2367 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2368 * optimization: added loop analysis and improved register allocation
2369 * fixed some bugs revealed by Paul Dietz' test suite:
2370 ** POSITION on displaced vectors with non-zero displacement
2371 returns the right answer.
2372 ** (SIMPLE-STRING) is a valid type specifier for sequence
2374 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2376 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2377 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2379 ** The justification version of the FORMAT ~< directive treats
2380 non-zero minpad parameter correctly.
2382 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2383 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2384 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2385 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2386 the supported interface.
2387 * new feature: Single-stepping of code compiled with DEBUG 2 or
2388 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2389 * new feature: saving cores with foreign code loaded is now
2390 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2391 Timothy Moore's work for CMUCL)
2392 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2393 parameters to * instead of NIL if no initform is supplied.
2394 (reported by Johan Bockgaard)
2395 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2396 correctly when FUNCALL appears as the car of the form. Note:
2397 despite this FUNCALL forms are not currently subject to
2398 compiler-macro expansion. (port of Raymond Toy's fix for the
2399 same from CMUCL, reported by Johan Bockgaard)
2400 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2401 (thanks for Teemu Kalvas)
2402 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2403 case instead of terminating the iteration (thanks for Julian
2404 Squires, Sean Champ and Raymond Toy)
2405 * bug fix: incorrect expansion of defgeneric that caused a style
2406 warning. (thanks for Zach Beane)
2407 * bug fix: slot accessor effective method computation works properly
2408 for classes with multiple non-standard applicable methods on
2409 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2410 * on x86 compiler supports stack allocation of results of LIST and
2411 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2412 CMUCL implementation by Gerd Moellmann)
2413 * fixed some bugs revealed by Paul Dietz' test suite:
2414 ** FORMAT strings with both the ~<~:;~> form of the justification
2415 directive and pretty-printing directives cause an error.
2417 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2418 * incompatible change: the internal functions
2419 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2420 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2421 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2422 instead of the old functions.
2423 * new feature: on platforms where "dladdr" is available foreign
2424 function names now appear in backtraces. (based on Helmut Eller's
2426 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2427 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2429 * documentation: ASDF manual is now distributed with SBCL.
2430 * bug fix: SBCL can now load its contributed modules with REQUIRE
2431 even if the system-provided entries have been removed from
2432 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2434 * bug fix: backtraces involving undefined functions or assembly
2435 routines are more informative. (thanks to Brian Downing)
2436 * bug fix: mutually referent alien structures now work correctly.
2437 (reported by Rick Taube)
2438 * bug fix: structures defined by WITH-ALIEN can be referred to
2439 within other definitions in the same WITH-ALIEN.
2440 * bug fix: division operators (MOD, TRUNCATE and the like) with
2441 constant zero divisors and integer dividends no longer generate
2443 * bug fix: provide default methods for INPUT-STREAM-P and
2444 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2445 * bug fix: improve the detection and resolution of MOP metacycles
2446 (where effective method computation depends on the generic function
2447 having its effective method computed). (reported by Bruno Haible)
2448 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2449 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2450 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2451 * bug fix: pathnames with relative directory components can be
2452 represented relative to default pathnames.
2453 * optimization: in taking the GCD of bignums, reduce the two bignums
2454 to approximately the same size (using Euclid's algorithm) before
2455 applying the more sophisticated binary GCD. (thanks to Juho
2457 * optimization: COUNT on bitvectors now operates word-at-a-time.
2458 * optimization: ASH with a positive, but not necessarily constant,
2459 (leftwards) shift, when in a modular context, is compiled to a
2461 * fixed some bugs revealed by Paul Dietz' test suite:
2462 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2463 if the corresponding argument is NIL.
2464 ** FORMAT directives accepting a minpad parameter treat negative
2466 ** literal commas as character parameters to FORMAT directives are
2468 ** literal spaces directly after ~<Newline> directives within a
2469 format-logical-block (~:< ~@:>) do not induce :FILL-style
2470 conditional newlines.
2471 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2472 as specified: it no longer includes conditional newlines).
2473 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2475 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2476 :PER-LINE-PREFIX argument does not evaluate to a string.
2478 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2479 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2480 the manual for details; for now, package locks can be disabled by
2481 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2482 if no major problems are found then it is likely that they will be
2483 compiled in unconditionally.
2484 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2485 unsupported operators on all platforms. To load a shared library
2486 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2487 object file, link it into a shared library outside of SBCL and
2488 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2490 * bug workaround: ROOM T and the GC were not working together
2491 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2492 reporting facility aren't preserved. That reporting has been
2493 disabled, so now until and unless someone figures out how to make it
2494 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2495 * minor incompatible change: as threatened around sbcl-0.8.0, the
2496 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2497 The symbols are also exported from SB-PCL for backwards
2498 compatibility, but more so than before SB-PCL should be treated as
2499 an implementation-internal package.
2500 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2502 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2503 It is known as of this release not to work on the Alpha, however.
2504 * fixed bug #167: errors signalled due to illegal syntax in method
2505 bodies are now more legible.
2506 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2507 designators and can hence be used with TYPEP.
2508 * fixed bug #333: CHECK-TYPE now ensures that the type error
2509 signalled, if any, has the right object to be accessed by
2510 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2511 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2512 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2514 * fixed bug #334: programmatic addition of slots using specialized
2515 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2516 and :ALLOCATION :CLASS slots.
2517 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2518 float exponents. (rereported by Peter Seibel)
2519 * fixed a bug: #\Space (and other whitespace characters) are no
2520 longer considered to be macro characters in standard syntax by
2521 GET-MACRO-CHARACTER.
2522 * fixed bug: initialization of condition class metaobjects no longer
2523 causes an instance of the condition to be created. (reported by
2525 * fixed bug: it is now possible to have slots such that
2526 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2527 description is neither :INSTANCE nor :CLASS.
2528 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2529 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2530 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2531 non-standard SLOT-DEFINITION-ALLOCATION values.
2532 * fixed bugs: various race conditions handling exiting threads.
2533 CL-PPCRE's thread torture test now passes.
2534 * fixed arguably-a-bug: GC time proportional to number of threads in
2535 system even when most of them are idle
2536 * optimization: improved performance of BIT and SBIT on bit-vectors.
2537 * .fasl file incompatibility: The fasl file version number has
2538 been incremented because of changes associated with package locks.
2540 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2541 * minor incompatible change: the system no longer provides
2542 optimization hints (conditions which are TYPEP
2543 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2544 mode; these hints are still emitted when higher SPEED optimization
2546 * new contrib module: a sampling profiler (profiling by statistical
2547 sampling, rather than by instrumenting functions) is available as
2548 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2549 * the behaviour of the standard function ED is now customizeable by
2550 third parties through a hook variable: see ED's documentation
2551 string for information on the protocol.
2552 * the compiler no longer emits efficiency notes for (FUNCALL X)
2553 when the type of X is uncertain under default optimization
2555 * fixed bug 276: mutating a binding of a specialized parameter to a
2556 method to something that is not TYPEP the specializer is now
2558 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2559 exhibit the required behaviour on the x86 platform. (thanks to
2560 Peter van Eynde, Eric Marsden and Bruno Haible)
2561 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2562 even for difficult arguments. (reported by Peter Graves)
2563 * fixed bug 141a: the backquote printer now descends quoted
2565 * fixed another bug in backquote printing: no more destructive
2566 modification of the form's list structure. (reported by Brian
2568 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2569 move between its address being taken and the call to
2570 interrupt_thread, fixing a crashing race condition.
2571 * the SB-POSIX contrib implementation has been adjusted so that it
2572 no longer exhibits ridiculously poor performance when constructing
2573 instances corresponding to C structs.
2575 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2576 * minor incompatible change: the sb-grovel contrib now treats C
2577 structures as alien (in the sense of SB-ALIEN) objects rather than
2578 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2579 has implications for memory management of client code
2580 (sb-grovel-returned objects must now be manually managed) and for
2581 type safety (alien objects now have full types).
2582 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2583 used to control emission of compiler diagnostics, rather than the
2584 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2585 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2586 quality should be considered deprecated.
2587 * install.sh now installs the user manual as well
2588 * (not quite a new documentable feature, but worth considering in
2589 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2590 beginnings of a semantically meaningful condition hierarchy is
2591 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2593 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2594 designator as the defaults argument.
2595 * fixed bug: Displaced arrays whose displaced-to array has become
2596 too small now cause ARRAY-DIMENSION to signal an error, providing
2597 for safer bounds-checking. (reported by Bruno Haible)
2598 * fixed bug: DEFCLASS slot definitions with identical :READER and
2599 :WRITER names now signal a reasonable error. (reported by Thomas
2601 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2603 * fixed bug: Invalid slot specification errors now print correctly.
2604 (thanks to Zach Beane)
2605 * fixed bug 320: Shared to local slot value transfers in class
2606 redefinitions now happen corrently from superclasses as
2607 well. (reported by Bruno Haible)
2608 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2610 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2611 improper lists correctly. (reported by Bruno Haible)
2612 * fixed bug 313: source-transform for <fun-name> was erroneously
2613 applied to a call of a value of a variable with name <fun-name>.
2614 (reported by Antonio Menezes Leitao)
2615 * fixed bug 307: The obsolete instance protocol ensures that
2616 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2617 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2618 remove dead unknown-values globs from the middle of the stack.
2619 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2620 easier to resume long computations after using *BREAK-ON-SIGNALS*
2621 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2622 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2623 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2624 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2625 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2626 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2628 * fixed a (fairly theoretical) bug in string printing: if
2629 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2630 does not have array-element-type equal to the most general string
2632 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2633 function name. (thanks to Nikodemus Siivola)
2634 * fixed bug: compile-time format string checker failed on
2635 non-closed ~{. (reported by Thomas F Burdick)
2636 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2637 don't warn on legal loop code involving more than one aggregate
2638 boolean. (thanks to Nikodemus Siivola)
2639 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2640 in keyword position to MAKE-PACKAGE was not being reported as
2642 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2643 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2645 * fixed bugs 280 and 312: the checking for multiple definitions in a
2646 file is less likely to become confused by uses of inline
2648 * fixed bug: the #S reader macro performs the keyword coercion
2649 specified for slot names. (reported by Kalle Niemitalo)
2650 * fixed bug: lambda lists may contain symbols whose names start with
2651 & but are not lambda-list-keywords; their occurrence triggers a
2653 * fixed bug 321: define-method-combination argument lambda lists do
2654 not cause invalid code to be generated when &optional or &aux
2655 variables have default values. (reported by Bruno Haible)
2656 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2657 have CLOS classes; this appears also to have fixed reported
2658 instability in stack exhaustion detection.
2659 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2660 MUFFLE-WARNING when no associated restart is present is now
2662 * optimization: rearranged the expansion of various defining macros
2663 so that each expands into only one top-level form in a
2664 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2666 * optimization: used a previously little-used slot in symbols to
2667 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2669 * fixed some bugs revealed by Paul Dietz' test suite:
2670 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2672 ** Fixed an optimization bug related to inheritance of initforms
2673 from local to shared slots.
2674 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2675 ** CAST optimizer forgot to flush argument derived type.
2676 ** print/read consistency on floats is now orders of magnitude
2677 more likely. (thanks also to Bruno Haible for a similar report
2679 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2680 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2681 for objects of type REAL. Make it so.
2682 ** SXHASH is specified (infelicitously) to respect similarity,
2683 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2684 it so. (thanks to Markus Ziegler)
2685 ** on the Alpha, the compiler succeeds in compiling functions
2686 returning a known number of arguments greater than 63.
2687 ** fixed handling of invalid NIL arguments in keyword position
2689 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2691 ** provided a readably-printable representation for RANDOM-STATE
2693 ** ensured that pathnames, where they have a namestring, always
2694 print using #P"..." syntax.
2696 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2697 * Support for the forthcoming 2.0 version of the NetBSD kernel
2698 running on x86 hardware has been added. (thanks to Perry
2699 E. Metzger most immediately, and others for their past work)
2700 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2701 current release version; SBCL's OpenBSD support had been broken
2702 since about the time of OpenBSD's switch to ELF binary format.)
2703 * [placeholder for DX summary]
2704 ** user code with &REST lists declared dynamic-extent, under high
2705 speed or space and low safety and debug optimization policy.
2706 * The manual has been converted to Texinfo format and the debugger
2707 chapter from the cmucl manual has been added.
2708 * A facility has been added to extract documentation strings from
2709 sbcl and store them as Texinfo-formatted snippets for inclusion in
2710 the manual (via Texinfo's @include directive)
2711 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2712 the test case to Dave Roberts)
2713 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2714 pointers. (reported by Sean Ross)
2715 * bug fix: PROFILE output is printed nicely even for large numerical
2716 values. (thanks to Zach Beane)
2717 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2718 greater than 32 handle EOF correctly.
2719 * bug fix: on X86 an immediate argument of the IMUL instruction is
2720 correctly printed in disassembly. (thanks to Lutz Euler)
2721 * bug fix: class slots in redefined classes preserve their old
2722 values. (thanks to Bruno Haible and Nikodemus Siivola)
2723 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2724 succeeds. (reported by Marco Baringer)
2725 * fixed some bugs revealed by Paul Dietz' test suite:
2726 ** READ-SEQUENCE now works on ECHO-STREAMs.
2727 ** RATIONALIZE works more according to its specification. (thanks
2730 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2731 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2732 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2733 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2734 should matter to you only if you rebind the printer control
2735 variables and then find you want different bindings in the
2736 debugger than in the ordinary execution of your program.)
2737 * The runtime build system has been tweaked to support building
2738 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2739 assembler and linker. (thanks to Nikodemus Siivola)
2740 * Unbound, undefined, undeclared variables now trigger full
2741 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2742 more often programmer error than deliberate exploitation of undefined
2744 * optimization: the hash algorithm for strings has changed to one
2745 that is less vulnerable to spurious collisions. (thanks to Juho
2747 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2748 needless bounds checking. (thanks to Juho Snellman)
2749 * optimization: implemented multiplication as a modular
2750 (UNSIGNED-BYTE 32) operation on the PPC backend.
2751 * fixed some bugs revealed by Paul Dietz' test suite:
2752 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2754 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2755 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2756 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2758 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2760 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2762 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2763 their output stream on EOF from read.
2764 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2765 have been read to end-of-file.
2766 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2768 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2769 description of determination of which consecutive characters
2771 ** Printing the "Space" character with escaping on now yields "#\\ ",
2772 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2773 ** Reading floating-point numbers with *READ-BASE* set to a number
2774 less than 10 works correctly.
2775 ** Reading floating-point numbers with *READ-BASE* set to a number
2776 more than 10 works correctly.
2777 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2778 the readtable currently in effect.
2780 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2781 * minor incompatible change: parsing of namestrings on a physical
2782 (Unix) host has changed; numbers after the final #\. in a
2783 namestring are no longer interpreted as a version field. This is
2784 intented to be largely invisible to the user, except that the
2785 meaning of the namestring "*.*.*" has changed: it now refers to a
2786 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2787 should usually be replaced by
2788 (make-pathname :name :wild :type :wild :version :wild)
2789 with the added benefit that this is more likely to be portable.
2790 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2791 option to OPEN now signals an error if the file being opened
2792 exists; this may have an impact on existing code.
2793 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2794 signals received, on the PowerPC platforms (both Linux and
2795 Darwin). (thanks to Pierre Mai for pointing out the location of
2797 * several fixes on OS X: The system now builds and runs cleanly on
2798 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2799 (thanks to Brian Mastenbrook)
2800 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2801 second-resolution: integer multiples of 1/3600 between -24 and 24.
2802 (thanks to Vincent Arkesteijn)
2803 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2804 type when called with 1 argument; PEEK-CHAR checked type of
2805 PEEK-TYPE only after having read first character from a
2806 stream. (reported by Peter Graves)
2807 * bug fix: the garbage collector now has much better locality
2808 behaviour, and in particular no longer treats all memory as being
2809 exhausted when many small objects point to each other in a deeply
2811 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2812 recognized as being TYPEP their class.
2813 * bug fix: the PUSHNEW documentation string has been corrected.
2814 (thanks to Vincent Arkesteijn)
2815 * bug fix: defaulting of the value for the last of an atypically
2816 large number of multiple values being bound was not being
2817 performed correctly on the Alpha or PPC platforms
2818 * optimization: implemented multiplication as a modular
2819 (UNSIGNED-BYTE 32) operation on the x86 backend.
2820 * optimization: SEARCH on simple-base-strings can now be open-coded.
2821 (see also contrib/compiler-extras.lisp for inspiration for
2822 teaching the compiler about the Boyer-Moore algorithm).
2823 * value, returned by MAX (and MIN) called with several EQUALP, but
2824 not EQL, arguments now does not depend on compiler settings.
2825 * fixed some bugs revealed by Paul Dietz' test suite:
2826 ** in stack analysis liveness information is propagated from
2827 non-local entry points.
2828 ** pathwise CAST removing failed when the CAST node did not start
2830 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2831 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2833 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2834 host is already defined.
2835 ** RENAME-FILE works on streams instead of signalling an internal
2837 ** PEEK-CHAR uses the current readtable when determining whether
2838 or not a character is whitespace.
2839 ** MERGE-PATHNAMES handles the case when the pathname does not
2840 specify a name while the default-pathname specifies a version.
2841 ** Pathnames now stand a better chance of respecting print/read
2843 ** Attempting to use standardized file system operators with a
2844 pathname with invalid :DIRECTORY components signals a
2846 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2848 ** DIRECTORY on logical pathnames is more correct.
2849 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2850 signal a TYPE-ERROR if their argument is not a stream.
2851 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2852 designator argument does not designate a stream.
2853 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2854 examining the synonym.
2855 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2857 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2858 element-type larger than ([UN]SIGNED-BYTE 32).
2860 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2861 * When built with the :SB-FUTEX feature, threaded builds now take
2862 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2863 for faster/more reliable mutex and condition variable support.
2864 * Incompatible change (but one you probably shouldn't have been using
2865 anyway): the interface and code for arbitrating between multiple
2866 threads in the same user session has been redesigned.
2867 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2868 error when called without an explicit environment argument.
2869 (thanks to Nikodemus Siivola)
2870 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2871 confused about their position. (thanks to Adam Warner and Gerd
2873 * bug fix: Pretty printing backquoted forms with unquotations in the
2874 argument list position of various code constructs such as LAMBDA
2875 now works correctly. (reported by Paul Dietz)
2876 * bug fix: Pretty printing unquotations no longer loses all
2877 stream position information.
2878 * optimization: performance of string output streams is now less
2879 poor for multiple small sequence writes.
2880 * optimization: performance of CSUBTYPEP in the presence of complex
2881 expressions involving CONS and NOT many times has been improved.
2882 (reported by Paul Dietz)
2883 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2885 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2886 streams for the REPL, for the debugger, and so on. (thanks to
2888 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2889 * fixed some bugs revealed by Paul Dietz' test suite:
2890 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2891 is ignored if it is too small, rather than propagating through
2892 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2893 ** extremely complex negations of CONS types were not being
2894 sufficiently canonicalized, leading to inconsistencies in
2896 ** VALUES tranformer lost derived type.
2898 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2899 * fixed a bootstrapping bug: the build process no longer assumes
2900 that the various BOOLE-related constants have the same value in
2901 host and target lisps. (noted by Paul Dietz' test suite on an
2902 SBCL binary built from CLISP)
2903 * The system can now be dynamically linked on the MIPS platform,
2904 which enables dynamic loading of foreign code from Lisp. (thanks
2905 to Ralf Baechle for discussions on the MIPS ABI)
2906 * The system now records debugging information for its own source
2907 files in a filesystem-position-independent manner, relative to
2908 the "SYS" logical host.
2909 * fixed a compiler bug: MV-LET convertion did not check references
2910 to the "max args" entry point. (reported by Brian Downing)
2911 * tweaked disassembly notes to be less confident about proclaiming
2912 some instruction as an LRA. (thanks to Brian Downing)
2913 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2914 now each have their own history, command character, and other
2915 characteristics. (thanks to David Lichteblau)
2916 * fixed some bugs revealed by Paul Dietz' test suite:
2917 ** compiler failure in compiling LOGAND expressions including a
2919 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2920 shift greater than 32.
2921 ** FLUSH-DEST did not mark blocks for type check regeneration.
2922 ** HANDLER-CASE failed to accept declarations in handler clauses
2923 in some circumstances.
2925 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2926 * New code in contrib/sb-introspect (still probably not entirely
2927 stable yet) provides some support for smart Lisp development
2928 environments like SLIME.
2929 * The conditions signalled for errors occurring when loading .fasl
2930 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2931 in a way which should help ASDF recover gracefully.
2932 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2933 stuff has been cleaned up. If you code contrib/ stuff, this might
2934 affect you, and you can look at contrib/README, contrib/STANDARDS,
2935 and/or the 0.8.4.27 diff to check.
2936 * In full calls the compiler now does not generate checks for declared
2937 argument types for all arguments.
2938 * various threading fixes
2939 ** and some experimental patches which didn't make it into
2940 the main tree for this release, but which are shipped in
2941 contrib/experimental-thread.patch as a possible fix for some
2942 failures (deadlock, spinning...) in GC-intensive multithreaded
2944 * fixed PPC build problem (source code incompatibility of different
2945 library versions): added offsetof() hackery which attempts to divine
2946 where glibc maintainers put uc_mcontext today
2947 * fixed bug 282: compiler does not trust type assertions while passing
2948 arguments to a full call.
2949 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2950 &OPTIONAL VALUES type parameter.
2951 * fix bug 214: algorithm for noting rejected templates is now more
2952 similar to that of template seletion. (also reported by rydis on
2954 * fixed bug 141b: printing backquoted information readably and prettily
2955 inserts a space where necessary.
2956 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2957 (CHARACTER 10) are now reported as errors, rather than propagated
2958 as unknown types. (reported by piso on #lisp)
2959 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2960 with values NIL and :ERROR. (thanks to Milan Zamazal)
2961 * fixed bug 191c: CLOS now does proper keyword argument checking as
2962 described in CLHS 7.6.5 and 7.6.5.1.
2963 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2964 longer raise an error; further, using a list as a for-as-arithmetic
2965 counter now raises a meaningful error.
2966 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2967 now understood by sequence creation functions such as MAKE-SEQUENCE
2969 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2970 a STRING-INPUT-STREAM.
2971 * compiler enhancement: SIGNUM is now better able to derive the type
2973 * type declarations inside WITH-SLOTS are checked. (reported by
2975 * fixed some bugs revealed by Paul Dietz' test suite:
2976 ** incorrect optimization of TRUNCATE for a positive first
2977 argument and negative second.
2978 ** compiler failure in let-convertion during flushing dead code.
2979 ** compiler failure while deriving type of TRUNCATE on an
2980 interval, containing 0.
2981 ** ASH of a negative bignum by a negative bignum count now returns
2983 ** intersection of CONS types now canonicalizes properly, fixing
2984 inconsistencies in SUBTYPEP.
2986 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2987 * incompatible change: The --disable-debugger command line
2988 option now clobbers the debugger at a more fundamental
2989 level, by redefining #'INVOKE-DEBUGGER instead of by
2990 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2991 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2992 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2993 enter the debugger REPL and then suffer recursive errors
2994 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2995 while under the new system, BREAK in --disable-debugger mode
2996 terminates the system just as an unhandled error would.
2997 * fixed compiler performance when processing loops with a step >1;
2998 * bug fix: DOCUMENTATION now retrieves generic function
2999 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3000 support has been systematized, and now supports the methods
3001 specified by ANSI, along with a default method and a method for
3002 slot documentation. (reported by Nathan Froyd)
3003 * bug fix: effective methods associated with a generic function are
3004 no longer cached over a change of that generic function's method
3005 combination. (reported by Andreas Fuchs)
3006 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3007 names a non-existent directory. (thanks to Andreas Fuchs)
3008 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3009 the PPC platform, lead to stack corruption; this has been fixed.
3010 (reported by Rainer Joswig)
3011 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3012 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3013 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3014 arithmetic in general, is now much more reliable on the PPC
3016 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3017 platform now returns the right answer.
3018 * optimization: restored some effective method precomputation in
3019 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3020 precomputation is now tunable.
3021 * optimization: compiler-internal data structure use has been
3022 reviewed, and changes have been made that should improve the
3023 performance of the compiler by about 20%.
3024 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3025 simple-base-strings and simple-bit-vectors is improved.
3026 * optimization: the optimization of 32-bit logical and arithmetic
3027 functions introduced in version 0.8.3 on the x86 has been
3028 implemented on the mips, ppc and sparc platforms; an
3029 implementation of the same facility, but for 64-bit arithmetic,
3030 has been added for the alpha.
3031 * microoptimization: the compiler is better able to make use of the
3032 x86 LEA instruction for multiplication by constants.
3033 * bug fix: in some situations compiler did not report usage of
3034 generic arithmetic in (SPEED 3) policy.
3035 * bug 145b fix: compiler used wrong type specifier while converting
3036 MEMBER-types to numeric.
3037 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3039 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3040 index argument now works properly on the Alpha platform.
3041 * bug fix: floating point exception treatment on the Alpha platform
3043 * bug fix: FILE-POSITION works much better on string input and
3044 output streams. (thanks to Nikodemus Siivola)
3045 * bug fix: many threading/garbage collection symptoms sorted.
3046 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3047 might be pseudo-atomic.
3048 * internal change: Stopping for GC is now done with signals not
3049 ptrace. GC is now done in whichever thread wanted it, instead of
3051 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3053 * bug fix: result form in DO is not contained in the implicit
3055 * incompatible change: ICR structure is changed; the value part of
3056 CONTINUATION is now called LVAR; corresponding functions are
3057 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3058 * added type deriver for ISQRT (thanks to Robert E. Brown).
3059 * bug fix: better support for loading from the command line when an
3060 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3062 * fixed some bugs revealed by Paul Dietz' test suite:
3063 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3064 ** ROUND and FROUND now give the right answer when given very
3065 small float arguments.
3066 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3068 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3069 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3070 ** LCM should return a non-negative integer.
3071 ** PARSE-INTEGER returned the index of a terminator instead of the
3072 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3073 ** PARSE-INTEGER returned an incorrect index being applied to a
3075 ** LCM with two arguments of 0 returns 0 rather than signalling
3077 ** unsigned addition of a 32-bit constant with the high bit set no
3078 longer causes an internal compiler error on the x86.
3079 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3080 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3081 with negative last argument.
3082 ** byte specifiers with zero size and position no longer cause
3083 an error during type derivation.
3084 ** bignum multiplication on the Alpha platform now returns the
3086 * porting: The system now builds on SuSE AMD64, although it still
3087 generates a 32-bit binary.
3088 * .fasl file incompatibility: The fasl file version number has
3089 been incremented (because of the changes to internal compiler
3090 data structures referred to above).
3092 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3093 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3094 more accurately, on the Darwin kernel running on PowerPC hardware.
3095 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3096 * Compiler code deletion notes now signal a condition of type
3097 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3098 an associated MUFFLE-WARNING restart.
3099 * The compiler now performs limited argument count validation of
3100 constant format strings in FORMAT, and where appropriate in ERROR,
3101 CERROR and WARN. (thanks to Gerd Moellmann)
3102 * New ASDF-INSTALL contrib can be used for automatic download and
3103 installation of third-party Lisp code from CCLAN or other sites
3105 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3106 which forces another thread to execute a function supplied by the
3108 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3109 now accept and act upon their :ELEMENT-TYPE keyword argument.
3110 (reported by Martin Atzmueller, Edi Weitz)
3111 * bug fix: FILE-POSITION now accepts position designators up to
3112 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3113 is the greater. (thanks to Patrik Nordebo)
3114 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3115 Kalle Olavi Niemitalo)
3116 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3117 printable. (reported by Eric Marsden)
3118 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3119 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3120 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3121 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3122 (thanks to Stig Sandoe)
3123 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3124 UNREAD-CHAR now correctly includes the unread character in the
3125 target sequence. (thanks to Gerd Moellmann)
3126 * bug fix in threaded builds: the system can now be suspended and
3127 resumed by shell job control with minimal disruption.
3128 * bug fixes in times and timezones >2038AD
3129 * better handling of "where is GNU make?" problem in build scripts
3130 (thanks to Nikodemus Siivola)
3131 * new optimization: inside a named function any reference to a
3132 function with the same name is considered to be a self-reference;
3133 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3134 optimization quality.
3135 * new optimization on x86: logical functions and + now have
3136 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3137 used when the result is truncated to 32 bits.
3138 * VALUES declaration is partially enabled.
3139 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3140 * fixed some bugs revealed by Paul Dietz' test suite:
3141 ** The system now obeys the constraint imposed by
3142 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3143 types form a lattice under type intersection.
3144 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3145 ** ASSOC now ignores NIL elements in an alist.
3146 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3147 and (1+ MOST-POSITIVE-FIXNUM) answers.
3148 ** The addition of a method with invalid qualifiers to a generic
3149 function does not cause an error to be signalled immediately;
3150 a warning is signalled, and the error is generated only on
3151 calling the generic function.
3152 * changed .fasl file version number, in part to add type codes for
3153 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3154 obscure ANSI requirements
3156 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3157 * fixed bug 148: failure to inline-expand a local function left
3158 garbage, confusing the compiler.
3159 * fixed bugs 3cd: structure slot readers perform type check if the
3160 slot can have an invalid value (i.e. it is either not initialized
3161 or can be written with a less specific slot writer).
3162 * bug fix: the compiler now traps array references to elements off
3163 the end of an array; previously, the bounds checking in some
3164 circumstances could go off-by-one.
3165 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3167 * type declarations for array element types now obey the description
3168 on the CLHS page "Declaration TYPE", as per discussions on
3169 sbcl-help around 2003-05-08. This means that a declaration
3170 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3171 declaration, all references to BAR will be asserted or assumed
3172 (with THE, so dependent on compiler policy) to involve objects of
3173 type FOO. Note that no such declaration is implied in
3174 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3175 * declared types of functions from the "Conditions"
3176 chapter. (reported by Paul Dietz)
3177 * bug fix: CERROR accepts a function as its first argument.
3178 * bug fix: NTH an NTHCDR accept a bignum as index
3179 arguments. (reported by Adam Warner)
3180 * optimization: character compare routines now optimize comparing
3181 against a constant character. (reported by Gilbert Baumann)
3182 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3183 argument now works properly on the MIPS platform.
3184 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3185 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3186 declared to have a functional type, does not cause an error
3188 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3189 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3190 * fixed bug: if last continuation of a deleted block has a
3191 destination, this destination should be deleted too. (reported by
3193 * fixed a bug in the bootstrap process: the host compiler's values
3194 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3195 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3196 test case from Patrik Nordebo)
3197 * improved the ability of the disassembler on the PPC platform to
3198 provide helpful disassembly notes.
3199 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3200 the class in more cases than previously.
3201 * bug fix: FILE-POSITION now understands :START and :END for
3202 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3203 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3204 8) data. (thanks to David Lichteblau)
3205 * bug fix: it is possible to add a method to a generic function
3206 without lambda list.
3207 * bug fix: reader failed to signal END-OF-FILE inside an
3208 object representation. (reported by Nikodemus Siivola)
3209 * fixed some bugs revealed by Paul Dietz' test suite:
3210 ** LAST and [N]BUTLAST should accept a bignum.
3211 ** condition slot accessors are methods.
3212 ** (VECTOR NIL) is a subtype of STRING.
3214 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3215 * minor incompatible change: some nonsensical specialized lambda
3216 lists (used in DEFMETHOD) which were previously ignored now signal
3218 * minor incompatible change: the system is now aware of the types of
3219 variables in the COMMON-LISP package, and will signal errors for
3220 most violations of these type constraints (where previously they
3221 were silently accepted).
3222 * minor incompatible change: COMPILE-FILE now uses the freedom
3223 afforded (ANSI 3.2.2.3) to use derived function types for
3224 functions defined in the same file. This also permits the system
3225 to warn on static type mismatches and function
3226 redefinition. (Currently it does not work with high DEBUG level.)
3227 * minor incompatible change: VALUES declaration is disabled.
3228 * When issuing notes, the compiler now signals a condition of type
3229 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3230 restart for use in user handlers. It is expected that the
3231 COMPILER-NOTE condition will eventually become a condition
3232 supertype to a hierarchy of note types, which will then be
3233 handleable in a similar fashion. However, at the moment, no such
3234 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3235 but it's an implementation detail, not a classification for the
3237 * Changes in type checking closed the following bugs:
3238 ** type checking of unused values (192b, 194d, 203);
3239 ** template selection based on unsafe type assertions (192c, 236);
3240 ** type checking in branches (194bc).
3241 * A short form of VALUES type specifier has ANSI meaning (it has
3242 increased the number of situations when SBCL cannot perform type
3244 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3245 keywords or constants is permissible.
3246 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3247 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3248 classes. (thanks to Antonio Martinez)
3249 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3250 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3251 argument to a pretty-print stream. Instead, it leaves any such
3252 operations to DESCRIBE-OBJECT methods.
3253 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3255 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3256 lambda lists. (thanks to David Lichteblau)
3257 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3258 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3259 (thanks to Gerd Moellmann)
3260 * fixed bug 246: increased compilation speed of long
3261 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3263 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3265 * DEFCONSTANT now throws a condition of type
3266 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3267 constant to a non-EQL value; CONTINUE and ABORT restarts
3268 respectively change and preserve the value.
3269 * fixed bug 63: The code walker, part of the implementation of CLOS,
3270 is now better at handling symbol macros.
3271 * bug fix: There is no longer an internal implementation type named
3272 CL:LENGTH. (reported by Raymond Toy)
3273 * bug fix: In macro-like defining macros/special operators the
3274 implicit block does not enclose the lambda list.
3275 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3276 enclosed in parentheses) are not suitable as type specifiers, and
3277 their use properly signals an error now.
3278 * bug fix: An argument count mismatch for a type specifier in code
3279 being compiled no longer causes an unhandled error at compile
3280 time, but signals a compile-time warning.
3281 * fixed simple vector readable printing
3282 * bug fix: DESCRIBE takes more care over whether the class
3283 precedence list slot of a class is bound before accessing it.
3284 (reported by Markus Krummenacker)
3285 * bug fix: FORMATTER can successfully compile pretty-printer format
3286 strings which use variants of the ~* directive inside.
3287 * bug fix: SEARCH now applies its TEST predicate to the elements of
3288 the arguments in the correct order. (thanks to Wolfhard Buss)
3289 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3290 in type inference. (thanks to Robert E. Brown)
3291 * bug fix: Reading in symbols with an explicit package name of ""
3292 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3293 * fixed some bugs revealed by Paul Dietz' test suite:
3294 ** NIL is now allowed as a structure slot name.
3295 ** Arbitrary numbers, not just REALs, are allowed in certain
3296 circumstances in LOOP for-as-arithmetic clauses.
3297 ** Multiple class redefinitions before slot access no longer
3298 causes a type error.
3299 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3300 association between the name and a class.
3301 ** Generic functions with non-standard method-combination and over
3302 five methods all of which return constants no longer return NIL
3303 after the first few invocations. (thanks to Gerd Moellmann)
3304 ** CALL-NEXT-METHOD with no arguments now passes the original
3305 values of the arguments, even in the presence of assignment.
3306 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3308 ** DISASSEMBLE works with closures and funcallable instances.
3309 ** ADD-METHOD now returns the generic function, not the new method.
3310 ** FIND-METHOD signals an error if the lengths of the specializers
3311 is incompatible with the generic function, even if the ERRORP
3313 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3314 which its argument is a member.
3315 ** DEFCLASS only redefines the class named by its class-name
3316 argument if that name is the proper name of the class;
3317 otherwise, it creates a new class.
3318 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3319 of the UNBOUND-SLOT condition to the name of the slot.
3320 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3321 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3322 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3323 SLOT-MAKUNBOUND in the specified fashion.
3325 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3326 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3327 cross-compilation host. As a consequence, we can now bootstrap our
3328 way up to SBCL starting with a bare gcc toolchain and human-readable
3329 source code (first the source to CLISP, then the source to SBCL).
3330 * A contributed module containing a partial implementation of the
3331 simple-streams interface has been included. (thanks to Rudi
3333 * A contributed module implementing the RFC1321 Message Digest
3334 Algorithm, known as MD5, has been included.
3335 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3336 no longer has any effect, as the code controlled by this feature
3337 has been deleted. (As far as we know, no-one has ever built using
3338 this feature, and its semantics were confused in any case).
3339 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3340 work on conditions (as required by the ANSI specification),
3341 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3342 expected behaviour on conditions. Users should note, however,
3343 that such behaviour is not required by the ANSI specification,
3344 and so use of this behaviour may render their code unportable.
3345 * fixed some bugs revealed by Paul Dietz' test suite:
3346 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3348 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3349 ** SXHASH on condition objects no longer returns NIL.
3350 ** :ALLOCATION :CLASS slots are better treated; their values are
3351 updated on class redefinition, and initforms inherited from
3352 superclasses are applied.
3353 ** REMOVE-METHOD returns its generic function argument even when
3354 no method was removed.
3355 ** SHARED-INITIALIZE now initializes the values of the requested
3356 slots, including those with :ALLOCATION :CLASS.
3357 ** ALLOCATE-INSTANCE now works on structure classes defined via
3358 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3360 ** SLOT-EXISTS-P now works on conditions, as well as structures
3362 ** MAKE-LOAD-FORM now has the required methods on
3363 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3364 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3365 keyword, and now implements the SLOT-NAMES argument.
3366 ** methods with &OPTIONAL arguments no longer allow too many
3367 arguments to be passed in the call without error.
3368 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3369 option is consistent with the required arguments of the generic
3370 function lambda list.
3371 * bug fix: REQUIRE accepts a string designator. (Thanks to
3373 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3374 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3375 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3376 * bug fix: The compiler now checks for duplicated variables in macro
3378 * bug fix: SETQ on globals returns the correct value.
3379 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3380 not a COMPILER-ERROR (followed by some other strange error on
3381 choosing the CONTINUE restart).
3382 * bug fix: make.sh and friends are now more consistent in the way that
3383 they look for GNU "make".
3385 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3386 * experimental native threads support (on x86 Linux >=2.4 only).
3387 This is not compiled in by default: you need to add :SB-THREAD to
3388 the target features. See the "Beyond ANSI" chapter of the manual
3390 * fix for longstanding nonANSIism: The old distinction between
3391 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3392 The return value from CL:FIND-CLASS is now a CLOS class, and
3393 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3394 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3395 * An interface to the MetaObject Protocol, as described in Kiczales,
3396 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3397 MIT Press, 1991, is available from the SB-MOP package.
3398 * incompatible change: the SB-PCL package should now be considered
3399 a private implementation detail, and no longer a semi-private MOP
3401 * minor incompatible change: due to rearrangement for threads, the
3402 control stack and binding stack are now allocated at arbitrary
3403 addresses instead of being hardcoded per-port. Users affected by
3404 this probably have to be doing advanced things with shared
3405 libraries, and will know who they are.
3406 * minor incompatible change: Previously, all --eval forms used were
3407 processed with READ before any of them were processed with EVAL.
3408 Now each --eval form is processed with both READ and EVAL before
3409 the next --eval form is processed. (Thus package operations like
3410 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3411 work as the user might reasonably expect.)
3412 * minor incompatible change: *STANDARD-INPUT* is now only an
3413 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3415 * minor incompatible change: Y-OR-N-P is now character-oriented,
3416 not line oriented. Also, YES-OR-NO-P now works without errors.
3417 (thanks to Antonio Martinez)
3418 * sb-aclrepl module improvements: an integrated inspector, added
3419 repl features, and a bug fix to :trace command.
3420 * Known functions, which cannot be open coded by the backend, are
3421 considered to be able to check types of their arguments. (fixing
3422 a bug report by Nathan J. Froyd)
3423 * fixed a bug in computing method discriminating functions: It is
3424 now possible to define methods specialized on classes which have
3425 forward-referenced superclasses. (thanks to Gerd Moellmann)
3426 * fixed evaluation order in optional entries (reported by Gilbert
3428 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3429 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3430 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3431 required-by-AMOP NAME argument, as well as CLASS and
3432 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3433 * fixed bug 20: DEFMETHOD can define methods using names that are
3434 not the proper names of classes to designate class specializers.
3435 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3436 Unix file descriptors, instead of blowing up. (thanks to Antonio
3438 * Garbage collection refactoring: user-visible change is that a
3439 call to the GC function during WITHOUT-GCING will not do garbage
3440 collection until the end of the WITHOUT-GCING. If you were doing
3441 this you were probably losing anyway.
3442 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3443 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3444 TYPEP the latter but not the former.
3445 * The compiler issues a full WARNING for calls to undefined functions
3446 with names from the CL package.
3447 * MAP-INTO for a vector destination is open coded. (reported by
3448 Brian Downing on c.l.l)
3449 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3450 documentation string.
3451 * fixed some bugs revealed by Paul Dietz' test suite:
3452 ** COPY-ALIST now signals an error if its argument is a dotted
3454 ** Condition slots are now accessed more correctly in the presence
3455 of multiple initargs for a given slot.
3456 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3457 exclude restarts of the same name associated with a different
3459 ** DEFCLASS of forward-referenced classes with another
3460 forward-referenced class in the superclasses list no longer
3462 ** Condition slots are now initialized once each, not multiple
3463 times. (thanks to Gerd Moellmann)
3464 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3466 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3467 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3468 arguments contain duplicated elements.
3469 ** RESTART-CASE understands local macros.
3470 ** RESTART-CASE associates exactly its own restarts with a condition.
3471 ** ENDP in safe mode checks its argument to be of type LIST.
3472 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3473 in question is unbound.
3474 ** Optimized MAKE-INSTANCE functions no longer cause internal
3475 assertion failures in the presence of duplicate initargs.
3476 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3477 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3478 propagated even in the ctor optimized implementation of
3480 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3482 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3483 * a better implementation of SXHASH on (simple) bit vectors,
3484 measured both in execution speed and in distribution of results
3485 over the positive fixnums, has been installed. Likewise, a better
3486 implementation of EQUAL for simple bit vectors is now available.
3487 * fixed CEILING optimization for a divisor of form 2^k.
3488 * fixed bug 240 (emitting extra style warnings "using the lexical
3489 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3490 by Antonio Martinez)
3491 * fixed SXHASH, giving different results for NIL depending on type
3492 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3493 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3494 variable. (found by Rolf Wester)
3495 * SBCL does not ignore type declarations for special
3496 variables. (reported by rif on c.l.l 2003-03-05)
3497 * some bug fixes in contrib/sb-aclrepl/
3498 * fixed some bugs revealed by Paul Dietz' test suite:
3499 ** a bug in the CONS type specifier, whereby the CAR and CDR
3500 types got intertwined, has been fixed;
3501 ** the type system is now able to reason about the interaction
3502 between INTEGER and RATIO types more completely;
3503 ** APPEND, [N]REVERSE and NRECONC check that those their
3504 arguments, which must be proper lists, are really so;
3505 ** An array specialized to be unable to hold elements has been
3506 implemented, as required -- yes, really -- by ANSI;
3507 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3508 on malformed property lists;
3510 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3511 * incompatible packaging change: in line with Unix convention,
3512 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3513 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3514 * REQUIRE and PROVIDE are now optionally capable of doing something
3515 useful. See the documentation string for REQUIRE.
3516 * infrastructure for a managed SBCL contrib system: contributed
3517 modules in this release include:
3518 ** the ASDF system definition facility;
3519 ** an interface to the BSD Sockets API;
3520 ** an ACL-like convenience interface to the repl;
3521 (thanks to Kevin Rosenberg)
3522 ** an implementation of ROTATE-BYTE, with efficient implementation
3524 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3525 gives a closer approximation to the right answer than previously.
3526 (thanks to Raymond Toy)
3527 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3528 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3529 optional environment arguments, as required by ANSI.
3530 * fixed bugs in other functions taking environment objects, allowing
3531 calls with an explicit NIL environment argument to be compiled
3533 * fixed bug 228: primary return values from
3534 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3535 COMPILE or FUNCTION.
3536 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3537 :TYPE will no longer signal errors on innocuous objects.
3538 * fixed bug 231b: SETQ is better at respecting type declarations in
3539 the lexical environment.
3540 * fixed a bug in DEFCLASS: classes named by symbols with no or
3541 unprintable packages can now be defined.
3542 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3543 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3544 * fixed compiler failure related to checking types of functions.
3545 (reported by Robert E. Brown)
3546 * the compiler is now much more consistent in its error-checking
3547 treatment of bounding index arguments to sequence functions: in
3548 (SAFETY 3) code, errors will be signalled in almost all cases if
3549 invalid sequence bounding indices are passed to functions defined
3550 by ANSI to operate on sequences.
3551 * fixed a bug in the build procedure: documentation of SBCL-specific
3552 packages is now preserved and available in the final Lisp image.
3553 * lifted FDEFINITION lookup out of loops in the implementation of
3554 many list operations. (thanks to Robert E. Brown)
3555 * fixed a bug in the reader: the #n# reader macro now works for
3556 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3557 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3558 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3559 E. Brown and Tony Martinez respectively)
3560 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3561 SLOT-BOUNDP: in particular, it is now able to optimize them much
3562 better, and is now not vulnerable to having packages renamed.
3563 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3564 always called when a slot is not present in an instance. (thanks
3566 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3567 longer signal an error on unreading a character following EOF on
3568 the previous constituent stream. (thanks to Tony Martinez)
3569 * fixed some bugs revealed by Paul Dietz' test suite:
3570 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3571 not just nonnegative fixnums;
3572 ** the logical bit-array operators such as BIT-AND now accept an
3573 explicit NIL for their "opt-arg" argument (to indicate a
3574 freshly-consed result bit-array);
3575 ** ELT now signals an error on an invalid sequence index in safe
3577 ** the type system is now cleverer about negations of numeric
3578 types, and consequently understands the BIGNUM and RATIO types
3580 ** the type system is now cleverer about the interaction between
3581 INTEGER and RATIO types: while bugs still remain, many more
3582 cases are accurately computed;
3583 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3584 if it is in the last clause;
3585 ** CONSTANTLY now correctly returns a side-effect-free function in
3587 ** DECLARE is no longer treated as a special-operator; in
3588 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3589 * incremented fasl file version number due to the change in the
3590 DEFSTRUCT-SLOT-DESCRIPTION structure.
3592 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3593 * minor incompatible change: code processed by the "interpreter" or
3594 EVAL now has a compilation optimization policy of (DEBUG 2)
3595 (changed from (DEBUG 1)) to improve debuggability of interactive
3596 development, and to allow the use of the debug RETURN command in
3598 * an experimental implementation of the RETURN command for the
3599 debugger has been included. (thanks to Frederik Kuivinen)
3600 * fixed bug 62: constraints were not propagated into a loop.
3601 * fixed bug in embedded calls of SORT (reported and investigated by
3603 * fixed some bugs revealed by Paul Dietz' test suite:
3604 ** printing and reading of arrays with some dimensions having
3605 length 0 (thanks to Gerd Moellmann);
3606 ** BOA constructor with &AUX argument without a default value does
3607 not cause a type error;
3608 ** CONSTANTP now returns true for all self-evaluating objects.
3610 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3611 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3612 accessors that are related by inheritance, as specified in the
3613 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3614 Valtteri Vuorikoski)
3615 * The compiler is now able to inline functions that were defined in
3616 a complex lexical environment (e.g. inside a MACROLET).
3617 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3619 * Support for the upcoming FreeBSD-5.0 release has been included.
3620 (thanks to Dag-Erling Smorgrav)
3621 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3622 effect when it is not in a toplevel context.
3623 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3624 stand a better chance of being correct. (thanks to Gerd
3626 * fixed bug in COERCE, which now signals an error on coercing a
3627 rational to a bounded real type which excludes the expected
3629 * The compiler is now able to derive types more accurately from the
3630 COERCE and COMPILE functions.
3631 * fixed bug 223: functional binding is considered to be constant
3632 only for symbols in the CL package.
3633 * fixed bug 231: SETQ did not check the type of a variable being set
3634 (reported by Robert E. Brown)
3635 * A new optimization for MAKE-INSTANCE has been included, fixing
3636 various bugs (including relating to :ALLOCATION :CLASS slots and
3637 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3639 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3640 ** As required by ANSI, LOOP now disallows anonymous collection
3641 clauses such as COLLECT I in conjunction with aggregate boolean
3642 clauses such as THEREIS (= I 1);
3643 ** LOOP now signals an error when any variable is reused in the
3644 same loop (including the potentially useful construct analogous
3645 to WITH A = 1 WITH A = (1+ A);
3646 ** IT is only a special loop symbol within the first clause of a
3647 conditional loop clause;
3648 ** LOOP with a typed iteration variable over a hashtable now
3649 signals a type error iff it should.
3650 * fixed some other bugs revealed by Paul Dietz' test suite:
3651 ** FILE-STREAM now names the class previously known as FD-STREAM;
3652 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3653 argument) no longer signals an error;
3654 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3655 of the slot symbol, rather than using the current package
3656 ((:CONC-NAME "") continues to intern the slot's name in the
3658 * incremented fasl file version number, because of the incompatible
3659 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3660 of the new implementation of DEFINE-COMPILER-MACRO.
3662 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3663 * Support for building SBCL for MIPS platforms running in
3664 little-endian mode has now been checked in, and basic
3665 functionality on said platforms verified.
3666 * minor incompatible change: PCL now records the pathname of a file
3667 in which methods and the like are defined, rather than its
3669 * minor incompatible change: TRUENAME now considers the truename of
3670 a file naming a directory to be the pathname with :DIRECTORY
3671 component indicating that directory.
3672 * minor incompatible change: a NAMED clause in the extended form of
3673 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3674 reason for the previous behaviour is unclear.
3675 * more systematization and improvement of CLOS and MOP conformance
3676 in PCL (thanks to Gerd Moellman and Pierre Mai):
3677 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3679 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3680 primary methods with no specializers;
3681 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3683 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3684 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3685 FORWARD-REFERENCED-CLASSes; error reporting on
3686 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3688 ** SXHASH on CLOS instances now uses a slot internal to the
3689 instance to return different numbers on distinct instances,
3690 while preserving the same return value through invocations of
3692 ** DEFMETHOD signals errors when methods with longer incongruent
3693 lambda lists are added to generic functions;
3694 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3695 CLASS, as specified in AMOP;
3696 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3697 on the order returned by the primary method for classes of
3698 class STANDARD-CLASS;
3699 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3700 * fixed some bugs shown by Paul Dietz' test suite:
3701 ** DOLIST puts its body in TAGBODY;
3702 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3704 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3705 value producing form;
3706 ** if more variables are given to PROGV than values, extra
3707 variables are bound and made to have no value;
3708 ** NSUBSTITUTE on list arguments gets the right answer with
3710 ** ELT signals an error of type TYPE-ERROR when the index argument
3711 is not a valid sequence index;
3712 ** LOOP signals (at macroexpansion time) an error of type
3713 PROGRAM-ERROR when duplicate variable names are found;
3714 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3715 ** FUNCALL of special-operators now cause an error of type
3717 ** PSETQ now works as required in the presence of side-effecting
3718 symbol-macro places;
3719 ** NCONC accepts any object as its last argument;
3720 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3722 ** loop-for-as-package does not require a package to be explicitely
3724 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3726 * fixed bug 166: compiler preserves "there is a way to go"
3727 invariant when deleting code.
3728 * fixed bug 172: macro lambda lists with required arguments after
3729 &REST arguments now cause an error to be signalled. (thanks to
3731 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3732 bug. (thanks to Matthew Danish)
3733 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3735 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3736 arguments are lexically rebound. (thanks to Gerd Moellmann and
3738 * fixed bug 194: error messages are now more informative when there
3739 is no primary method applicable in a call to a generic
3740 function. (thanks to Gerd Moellmann)
3741 * fixed bug in command line argument checking (thanks to Julian
3743 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3744 (thanks to Matthew Danish)
3745 * incremented fasl file version number, because of the
3746 SXHASH-related changes in the layout of CLOS data structures
3748 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3749 * minor incompatible change: The runtime (the Unix executable named
3750 "sbcl") is now much pickier about the .core files it will load.
3751 Essentially it now requires .core files to descend from the same
3752 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3753 as the runtime does. (The intent is to prevent the crashes which
3754 can occur, and which can even be reported as mysterious failures,
3755 when people patch the sources or change the build parameters
3756 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3757 sbcl and .core files.)
3758 * fixed bug: VALUES-LIST is no longer optimized away.
3759 * fixed bug 142: The FFI conversion of C string values to Lisp
3760 string values no longer conses excessively. (thanks to Nathan
3761 Froyd porting Raymond Toy's fix to CMU CL)
3762 * began to systematize and improve MOP conformance in PCL (thanks to
3763 Nathan Froyd, Gerd Moellman and Pierre Mai):
3764 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3766 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3767 ** FINALIZE-INHERITANCE is now called on class finalization;
3768 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3769 argument precedence order.
3770 * fixed bug 202: The compiler no longer fails on functions whose
3771 derived types contradict their declared type.
3772 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3773 so it can be non-toplevel.
3774 * The fasl file version number has changed (because of the new
3775 implementation of DEFMACRO).
3776 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3777 safe code, that any length requirement by their type-specifier
3778 argument is valid. The exceptions to this are described in bug
3780 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3781 functions now check the types of their inputs as required by ANSI.
3782 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3783 introduced symbol is DECLAREd to be SPECIAL.
3784 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3785 * fixed bug: :COUNT argument to sequence functions may be negative
3786 * fixed bug: body of DO-SYMBOLS may contain declarations
3787 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3788 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3789 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3790 symbol macro only once
3791 * fixed printing of call frame when argument list is unavailable
3792 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3793 * compiler no longer signals WARNING on unknown keyword
3796 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3797 * A beta-quality port to the mips architecture running Linux,
3798 based on the old CMUCL backend, has been made. It has been tested
3799 on a big-endian kernel, and works sufficiently well to be able to
3800 rebuild itself; it has not been tested in little-endian mode.
3801 * fixed an inconsistency between gencgc.c and purify.c which made
3802 dumping/loading .core files unreliable
3803 * fixed bug 120a: The compiler now deals correctly with IFs where
3804 the consequent is the same as the alternative, instead of
3805 misderiving the return type. (thanks to Alexey Dejneka)
3806 * fixed bug 113: Logical pathnames are now dumpable (the logical
3807 host is resolved at load-time, throwing an error if it is not
3809 * fixed bug 174: FORMAT's error message is slightly clearer when a
3810 non-printing character is used in a format directive.
3811 * fixed several bugs in compiler checking of type declarations, i.e.
3812 violations of the Python "declarations are assertions" principle
3813 (thanks to Alexey Dejneka)
3814 * fixed several bugs in PCL's error checking (thanks to Gerd
3816 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3818 * fixed bug in compilation of functions as first class values
3819 (thanks to Antonio Martinez-Shotton)
3820 * The compiler's handling TYPE-ERRORs which it can prove will
3821 inevitably happen at runtime has been cleaned up and corrected
3822 in several ways. (thanks to Alexey Dejneka)
3823 * improved argument type checking for various basic arithmetic
3824 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3825 lavished on them in the past that they can be compiled in many
3826 ways in different special cases
3827 * fixed bug 181: compiler checks validity of user supplied type
3829 * cleaned up code flushing in optimization: Function calls which
3830 should signal errors for safety purposes (e.g. which ANSI says
3831 should signal errors when their arguments are of incorrect type)
3832 are no longer optimized away.
3833 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3834 * incremented fasl file version number, because changes in the
3835 implementation of sequence functions like COERCE caused
3836 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3837 in old inline expansions) to become undefined. (Actually these
3838 changes were later undone, so we might very well be binary
3839 compatible with 0.7.7 after all, but leaving the version number
3840 incremented seemed like the simplest and most conservative
3843 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3844 * An alpha-quality port to the parisc architecture running Linux,
3845 based on the old CMUCL backend, has been made. This, even more so
3846 than the other backends, should be considered still a work in
3847 progress; known problems include that the Linux kernel in 64-bit
3848 mode does not propagate the correct sigcontext structure to
3849 userspace, and consequently SBCL on a parisc64 kernel will not
3851 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3852 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3853 suppressed.) Also now that the compiler is looking at declarations
3854 in the environment, it checks optimization declarations as well,
3855 and suppresses inlining when (> DEBUG SPEED).
3856 * More fixes have been made to treatment of floating point exception
3857 treatment and other Unix signals. In particular, floating point
3858 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3859 * The detection and handling of control stack exhaustion (infinite
3860 or very deeply nested recursion) has changed. Stack exhaustion
3861 detection is now done by write-protecting pages at the OS level
3862 and applies at all optimization settings; when found, a
3863 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3864 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3865 be caught using IGNORE-ERRORS.
3866 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3867 correctly when transforming recursive LABELS functions to LETs.
3868 (thanks to Alexey Dejneka)
3869 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3870 that are names of constants or global variables.
3871 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3872 alien routines with docstrings.
3873 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3874 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3876 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3877 (thanks to Eric Marsden)
3878 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3879 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3880 * Bug fix: The SPARC backend can now compile functions involving
3881 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3882 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3883 to a functions expecting a PATHNAME-DESIGNATOR.
3884 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3885 lambda lists. (thanks to Alexey Dejneka)
3886 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3887 functions so that EXPORTing the name of the class doesn't cause
3888 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3889 to Antonio Martinez for reporting this)
3890 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3891 constant-folded without failing an assertion. (thanks to Einar
3892 Floystad Dorum for reporting this)
3893 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3894 types are now dealt with more correctly by the compiler.
3895 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3896 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3897 behaviour analogous to RENAME-FILE. This puts its behaviour more
3898 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3900 * The fasl file version number has changed again. (because of the
3901 bug fix involving the names of PCL MAKE-INSTANCE functions)
3903 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3904 * bug fix: Floating point exceptions are treated much more
3905 consistently on the x86/Linux and PPC/Linux platforms.
3906 * Array initialization with :INITIAL-ELEMENT is now much faster for
3907 cases when the compiler cannot open code the array creation, but
3908 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3909 array accesses have also seen a speed increase.
3910 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3911 specified. (This was at the root of some bad interactions between
3912 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3914 * bug fix: Internal error arguments for undefined functions are now
3915 computed correctly on the PPC/Linux platform.
3916 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3917 Raymond Toy's patch for CMU CL)
3918 * Support for the Solaris 9 operating environment has been included
3919 (thanks to Daniel Merritt)
3920 * A very ugly but hopefully complete draft of the missing FFI chapter
3921 of the manual has been created by reformatting the corresponding
3922 CMU CL manual chapter into (currently very ugly and incoherent)
3923 DocBook and bringing it up to date for SBCL behavior. Thus, the
3924 manual is now essentially complete, at least by my extreme
3925 once-and-only-once standards, whereby it's acceptable to refer to
3926 the doc strings of SB-EXT functions as the primary documentation.
3927 * The fasl file version number has changed again, due to cleanup of
3928 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3929 is no longer a static symbol.)
3931 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3932 * SBCL now builds with OpenMCL (version 0.12) as the
3933 cross-compilation host; also, more progress has been made toward
3934 bootstrapping under CLISP.
3935 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3937 * bug 158 fixed: The compiler can now deal with integer loop
3938 increments different from 1; fixing this turned out also to fix
3940 * bug 169 fixed: no more bogus warnings about using lexical bindings
3941 despite the presence of perfectly good SPECIAL declarations (thanks
3942 to David Lichteblau)
3943 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3944 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3945 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3947 * bug 180 fixed: Method combination specifications no longer ignore
3948 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3949 * bug fix: Structure type predicate functions now check their argument
3950 count as they should.
3951 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3952 correctly. (thanks to Pierre Mai)
3953 * minor incompatible change: The --noprogrammer option is deprecated
3954 in favor of the new --disable-debugger option, which is very similar.
3955 (The major difference is that it takes effect at a slightly different
3956 time at startup, causing handling of errors in --sysinit and
3957 --userinit files will be affected differently.) The
3958 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3959 been added to allow this functionality to be controlled from ordinary
3960 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3961 maintainers, who might want to run non-interactive scripts to
3962 build SBCL cores which will later be used interactively.)
3963 * minor incompatible change: The LOAD function no longer, when given
3964 a wild pathname to load, loads all files matching that pathname.
3965 Instead, an error of type FILE-ERROR is signalled.
3967 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3968 * bug 147 fixed: The compiler preserves its block link/count
3969 invariants more correctly now so that it doesn't crash. (thanks
3971 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3973 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3974 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3975 no-value-for-this-character as NIL (as specified by ANSI).
3976 * HOST-NAMESTRING on physical pathnames now returns a string that is
3977 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3978 (thanks to Christophe Rhodes)
3979 * The Alpha port handles icache flushing more correctly. (thanks to
3981 * More progress has been made toward bootstrapping under CLISP. (thanks
3982 to Christophe Rhodes)
3983 * The fasl file format has changed again, because dynamic loading
3984 on OpenBSD (which has non-ELF object files) motivated some cleanups
3985 in the way that foreign symbols are transformed and passed around.
3986 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3987 is no longer treated as whitespace by the reader, but instead as
3988 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3989 |A
\7fB|, instead of A as it used to.
3991 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3992 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3993 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3994 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3995 this as of 0.7.1.45, but was left out of the previous news section
3996 (thanks to Dan Barlow)
3997 * SBCL now runs on the Solaris operating system on SPARC architectures
3998 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3999 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4000 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4001 * SPARC backend cleanups, allowing builds of cores optimized for V8
4002 and V9 SPARCS, and also emission of code targeted to a particular
4003 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4005 * SBCL is closer to bootstrapping under CLISP, thanks to various
4006 fixes by Christophe Rhodes.
4007 * The fasl file format has changed again, to allow the compiler's
4008 INFO database to support symbol macros.
4009 * The user manual (in doc/) is formatted into HTML more nicely.
4010 (thanks to coreythomas)
4011 * The system is smarter about SUBTYPEP relationships, especially
4012 those involving NOT types (including types such as ATOM which are
4013 represented internally using NOT types). Thus SUBTYPEP is less
4014 likely to return (VALUES NIL NIL) in general, and in particular
4015 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4017 * The fasl file format has changed again, because the internal
4018 representation of types now includes a new slot to support the new
4019 SUBTYPEP-of-NOT-types logic.
4020 * (not a change in the main branch of SBCL, but a related prototype
4021 which can hopefully be merged into the main branch of SBCL in the
4022 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4023 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4024 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4025 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4026 dispatch macro character combinations. (thanks to Alexey Dejneka)
4027 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4028 that superficially look like logical namestrings correctly.
4029 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4031 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4032 default supplied-p) for &optional and &key arguments. (thanks to
4035 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4036 * incompatible change: The compiler is now less aggressive about
4037 tail call optimization, doing it only when (> SPACE DEBUG) or
4038 (> SPEED DEBUG). (This is an incompatible change because there are
4039 programs which relied on the old CMU-CL-style behavior to optimize
4040 away their unbounded recursion which will now die of stack overflow.)
4041 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4042 for non-GENCGC systems has been increased to 20M (since that
4043 seems much closer to the likely performance optimum for modern
4044 systems than the old 4M value was)
4045 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4046 and *DEBUG-PRINT-LEVEL*
4047 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4048 of CMU CL's support for SPARC, and various endianness and other
4049 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4050 * new syntactic sugar for the Unix command line: --load foo.bar is now
4051 an alternate notation for --eval '(load "foo.bar")'.
4053 ** The system now detects stack overflow and handles it gracefully,
4054 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4055 optimization settings. (This is a good thing in general, and
4056 its introduction in this version should be particularly timely
4057 for anyone whose code fails because of suppression of tail
4059 ** The system now hunts for the C variable "environ" in a more
4060 devious way, to avoid segfaults when the C library version differs
4061 between compile time and run time. (thanks to Christophe Rhodes)
4062 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4063 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4064 ** The compiler no longer issues bogus style warnings for undefined
4065 classes in the same source file as the DEFCLASSes which defined
4066 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4068 ** fixes in CONDITION class precedence list for undefined function
4069 errors (thanks to Alexei Dejneka)
4070 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4071 correctly. (thanks to Dan Barlow)
4072 ** portability fixes aiming at bootstrapping under CLISP (thanks
4073 to Dave McDonald and Christophe Rhodes)
4074 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4075 ** fixes in type translation and and type inference (thanks to
4077 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4078 ** various fixes in the new ports (thanks to Dan Barlow)
4079 * several changes related to debugging:
4080 ** suppression of tail recursion, as noted above
4081 ** stack overflow detection, as noted above
4082 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4083 is now the default. (For some time encapsulation has been more
4084 reliable than the breakpoint-based :ENCAPSULATE NIL
4085 implementation, at least on X86 systems; and I just noticed that
4086 encapsulation also seems closer to the spirit of the ANSI
4089 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4091 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4092 up properly again. (There was a packaging bug in 0.7.0 which
4093 left their definitions in SB-SYS::LOAD-FOREIGN and
4094 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4095 vital for most things which interface to C-level interfaces,
4096 like extensions working with sockets or databases or
4097 Perl-compatible regexes or whatever, and the need to fix
4098 this bug is the main reason that 0.7.1 was released so
4100 ** DEFGENERIC is now choosier about the methods it redefines, so that
4101 reLOADing a previously-LOADed file containing DEFGENERICs does
4102 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4103 cycle now works as it should. (thanks to Alexey Dejneka)
4104 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4105 fixed by Christophe Rhodes. (He actually submitted this patch
4106 months ago, and I delayed until after 0.7.0.)
4107 ** Bug 111 (internal compiler confusion about runtime checks on
4108 FUNCTION types) was fixed by Alexey Dejneka.
4109 * Some internal cleanups (getting rid of variables which aren't
4110 needed now that the byte interpreter is gone) caused the fasl
4111 file format number to change again.
4113 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4114 * major incompatible change: The default fasl file extension, i.e. the
4115 default extension for files produced by COMPILE-FILE, has changed
4116 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4118 ** There are many changes in the implementation of the compiler.
4119 SBCL is now essentially a compiler-only implementation of ANSI
4120 Common Lisp. EVAL still "interprets" a few special cases, but
4121 almost all the interesting cases are handled by creating
4122 a LAMBDA expression, calling COMPILE on it, then calling
4123 FUNCALL on the result.
4124 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4125 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4126 Since the code is newer, there might still be some new bugs
4127 (though not as many as before Martin Atzmueller's fixes:-). But
4128 the new code is substantially simpler and clearer, and hopefully
4129 any remaining bugs will be simpler, less fundamental, and more
4130 fixable then the bugs in the old code.
4131 ** The revised compiler is still a little unsteady on its feet.
4133 *** The debugging information it produces (particularly the names
4134 of FUNCTION objects) is sometimes much less useful than what
4135 the old compiler produced.
4136 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4137 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4138 within a MACROLET) has been temporarily weakened.
4139 ** There are new compiler optimizations for various functions:
4140 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4141 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4142 *** the math functions TRUNCATE, FLOOR, and CEILING
4143 *** the function-of-all-trades COERCE
4144 Mostly these should be transparent, but there's one
4145 potentially-annoying problem (bug 117): when the compiler
4146 inline-expands a function and does type analysis on the result,
4147 it can create control paths which have type mismatches, and
4148 when it can't prove that those control paths aren't taken,
4149 it will issue WARNINGs about the type mismatches. This is
4150 a particular problem in practice for the new sequence functions.
4151 It's not clear how this should be fixed, and for now, a
4152 workaround is given in the entry for 117 in the BUGS file.
4153 ** (Because of the interaction between the two previous items --
4154 occasional inlining problems and new inline expansions -- some
4155 of the new sequence function optimizations won't really kick in
4156 completely until debugging information, and then inlining, are
4157 straightened out in some future version.)
4158 * minor incompatible changes:
4159 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4160 DIRECTORY no longer implicitly promotes NIL slots of its
4161 pathname argument to :WILD. In particular, when you ask for the
4162 contents of a directory (which you used to be able to do without
4163 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4164 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4165 ** changes in behavior that ANSI explicitly defines to be
4166 implementation dependent:
4167 *** The new compiler-only implementation still conforms with ANSI,
4168 but acts a little different than before. Besides the obvious
4169 changes in performance tradeoffs (that the cost per form passed
4170 to EVAL has gone up, and the cost per form executed by EVAL
4171 has gone down), the behavior of the system changes a little
4172 because there are no longer any interpreted function objects.
4173 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4174 e.g. doing COMPILE on the output of interactive DEFUN is
4176 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4178 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4179 has changed from (:CL) to NIL.
4180 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4181 e.g. #\Newline and #\Tab, don't have names specified in the
4182 ANSI Common Lisp standard, is now based on their ASCII symbolic
4183 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4184 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4185 are no longer used for output.
4186 ** changes in internal implementation constants:
4187 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4188 4 million. (If your application spends a lot of time GCing and
4189 you have a lot of RAM, you might want to experiment with
4190 increasing it even more.)
4191 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4192 However, almost all old code should still continue to work without
4193 immediate update, as SB-C-CALL is now a (deprecated) nickname
4195 ** Old operator names in the style DEF-FOO are now deprecated in
4196 favor of new corresponding names DEFINE-FOO, for consistency with
4197 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4198 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4199 internal symbols, but a few supported extensions like
4200 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4201 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4202 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4203 etc. as you get deeper into recursive calls to the debugger
4204 command loop, instead of the old "5]", "5]]", "5]]]"
4205 sequence. (I was motivated to do this when squabbles between
4206 ILISP and SBCL left me very deeply nested in the debugger. In the
4207 short term, this change will probably provoke more ILISP/SBCL
4208 squabbles, but hopefully it will be an improvement in the long run.)
4209 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4210 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4211 function, since declaiming return types involving aliens is
4212 (1) annoyingly messy to do by hand and (2) vital to efficient
4213 compilation of code which calls such functions.
4214 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4215 longer reexported by the SB-EXT package. They're solely useful
4216 for alien code, so it seems more logical that you should get
4217 them from the SB-ALIEN package, not in SB-EXT.
4218 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4219 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4220 features. Instead, the code that they used to control is always
4221 built into the system.
4222 * many other bug fixes
4223 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4224 advantage of the new EVAL-WHEN stuff and to clean them up in
4225 general, and they are now more ANSI-compliant in a number of
4226 ways. Martin Atzmueller is responsible for a lot of this.
4227 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4229 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4230 *** correct ERROR type for various file operations
4231 *** some fixes for Lisp streams
4232 *** DEFMETHOD syntax checking
4233 *** changing old weird representation of debug information as
4234 strings (which, among their other deficiencies, don't transform
4235 correctly when you rename packages, and don't change their
4236 print representation when you change things like *PACKAGE*
4237 and *PRINT-LENGTH*) to symbols and lists of symbols
4238 He also made several improvements and fixed several bugs in DESCRIBE.
4239 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4241 *** misbehavior of WRITE-STRING/WRITE-LINE
4242 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4243 and several other LOOP problems as well
4244 *** DIRECTORY when similar filenames are present
4245 *** DEFGENERIC with :METHOD options
4246 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4247 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4248 *** argument ordering in FIND with :TEST option
4249 *** mishandled package designator argument in APROPOS-LIST
4250 *** various problems in the backquote readmacro
4251 *** a bug in APROPOS
4252 *** probably some others that I'm not describing very well here,
4253 since the CVS log documents them by reference to sbcl-devel
4254 messages, and the SourceForge archives aren't working well.:-(
4255 ** Dan Barlow improved the Alpha port (and is making progress on the
4256 PPC port, for those of you who think different).
4257 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4258 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4259 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4260 continues to work on the SPARC port (for those of you in a position
4261 to look down upon our little PC-compatible boxes from a great height).
4262 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4263 and uses that copy, rather than the current dynamic value, when
4264 it's trying to decide whether to truncate output. Thus e.g.
4265 (let ((*print-lines* 50))
4266 (pprint-logical-block (stream nil)
4268 (let ((*print-lines* 8))
4269 (print (aref possiblybigthings i) stream)))))
4270 should now truncate the logical block only at 50 lines, instead of
4271 often truncating it at 8 lines, as it did before.
4272 * The doc/cmucl/ directory, containing old CMU CL documentation
4273 from the time of the fork, is no longer part of the base system.
4274 SourceForge has shut down its anonymous FTP service, and with it
4275 my original plan for distributing the old CMU CL documentation
4276 there. For now, if you need these files you can download an old
4277 SBCL source release and extract them from it.
4278 * The fasl file version number changed again, for dozens of reasons,
4279 some of which are apparent above.
4281 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4282 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4283 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4284 patch, so that DISASSEMBLE output is much nicer.
4285 * The code in the SB-PROFILE package now seems reasonably stable.
4286 I still haven't decided what the final interface should look like
4287 (I'd like PROFILE to interact cleanly with TRACE, since both
4288 facilities use function encapsulation) but if you have a need
4289 for profiling now, you can probably use it successfully with
4290 the current CMU-CL-style interface.
4291 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4292 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4293 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4294 link now returns the dangling link itself, and for similar
4295 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4296 link itself. (In these cases the old code signalled an error and
4297 looped endlessly, respectively.) Thus, DIRECTORY now works even
4298 in the presence of dangling and cyclic symbolic links.
4299 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4300 is now a supported extension again, since the consensus on
4301 sbcl-devel was that it can be useful for ordinary development
4302 work, not just for debugging SBCL itself.
4303 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4304 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4305 that currently-defined functions might be redefined later with
4306 different return types.
4307 * Hash tables can be printed readably, as inspired by CMU CL code
4308 of Eric Marsden and SBCL code of Martin Atzmueller.
4309 * better error handling in CLOS method combination, thanks to
4310 Martin Atzmueller porting Pierre Mai's CMU CL patches
4311 * more overflow fixes for >16Mbyte I/O buffers
4312 * A bug in READ has been fixed, so that now a single Ctrl-D
4313 character suffices to cause end-of-file on character streams.
4314 In particular, now you only need one Ctrl-D at the command
4315 line (not two) to exit SBCL.
4316 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4318 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4319 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4320 does the right thing.
4321 * The implementation of some type tests, especially for CONDITION
4322 types, is now tidier and maybe faster, due to CMU CL code
4323 originally by Douglas Crosher, ported by Martin Atzmueller.
4324 * Some math functions have been fixed, and there are new
4325 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4326 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4327 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4328 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4329 likely to be built into sbcl-0.7.0.)
4330 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4331 CL, ported to SBCL by Martin Atzmueller)
4332 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4333 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4334 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4335 * There's a new slam.sh hack to shorten the edit/compile/debug
4336 cycle for low-level changes to SBCL itself, and a new
4337 :SB-AFTER-XC-CORE target feature to control the generation of
4338 the after-xc.core file needed by slam.sh.
4339 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4340 COMPILE-FILE is no longer supported, so that now every function
4341 gets an entry point, so that block compilation looks a little
4342 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4343 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4344 returns the number of bytes consed since the system started,
4345 rather than the number consed since the first time the function
4346 was called. (The new definition parallels ANSI functions like
4347 CL:GET-INTERNAL-RUN-TIME.)
4348 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4349 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4350 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4351 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4352 * Fasl file version numbers are now independent of the target CPU,
4353 since historically most system changes which required version
4354 number changes have affected all CPUs equally. Similarly,
4355 the byte fasl file version is now equal to the ordinary
4358 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4359 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4360 is no longer recognized. I apologize for this, because it was
4361 listed in SB-EXT as a supported extension, but I found that
4362 its existing behavior was poorly specified, as well as incorrectly
4363 specified, and it looked like too much of a mess to straighten it
4364 out. I have enough on my hands trying to get ANSI stuff to work..
4365 * many patches ported from CMU CL by Martin Atzmueller, with
4366 half a dozen bug fixes in pretty-printing and the debugger, and
4367 half a dozen others elsewhere
4368 * fixed bug 13: Floating point infinities are now supported again.
4369 They might still be a little bit flaky, but thanks to bug reports
4370 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4371 as flaky as they were.
4372 * The --noprogrammer command line option is now supported. (Its
4373 behavior is slightly different in detail from what the old man
4374 page claimed it would do, but it's still appropriate under the
4375 same circumstances that the man page talks about.)
4376 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4377 are now supported, and enabled by default. Thus, the compiler can
4378 handle many floating point and complex operations much less
4379 inefficiently. (Thus e.g. you can implement a complex FFT
4381 * The compiler now detects type mismatches between DECLAIM FTYPE
4382 and DEFUN better, and implements CHECK-TYPE more correctly, and
4383 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4384 thanks to patches from Martin Atzmueller.
4385 * various fixes to make the cross-compiler more portable to
4386 ANSI-conforming-but-different cross-compilation hosts (notably
4387 Lispworks for Windows, following bug reports from Arthur Lemmens)
4388 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4389 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4390 fixed thanks to Pierre Mai's CMU CL patches.
4391 * fixes to keep the system from overflowing internal counters when
4392 it tries to use i/o buffers larger than 16M bytes
4393 * fixed bug 45a: Various internal functions required to support
4394 complex special functions have been merged from CMU CL sources.
4395 (When I was first setting up SBCL, I misunderstood a compile-time
4396 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4397 * improved support for type intersection and union, fixing bug 12
4398 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4399 more obscure bugs as well
4400 * some steps toward byte-compiling non-performance-critical
4401 parts of the system, courtesy of patches from Martin Atzmueller
4402 * Christophe Rhodes has made some debian packages of sbcl at
4403 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4404 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4405 stable, but are nonetheless usable. When he's ready, I'd be happy
4406 to add them to the SourceForge "File Releases" section. (And if
4407 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4408 * new fasl file format version number (because of changes in
4409 internal representation of (OR ..) types to accommodate the new
4410 support for (AND ..) types, among other things)
4412 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4413 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4415 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4417 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4418 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4419 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4420 * DESCRIBE now works on structure objects again.
4421 * Most function call argument type mismatches are now handled as
4422 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4423 know whether the function will be redefined before the call is
4424 executed. (The compiler could flag local calls with full WARNINGs,
4425 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4426 it doesn't keep track of enough information to know whether calls
4427 are local in this sense.)
4428 * Compiler output is now more verbose, with messages truncated
4429 later than before. (There should be some supported way for users
4430 to override the default verbosity, but I haven't decided how to
4431 provide it yet, so this behavior is still controlled by the internal
4432 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4433 src/compiler/ir1util.lisp.)
4434 * Fasl file format version numbers have increased again, because
4435 support for the Gray streams extension changes the layout of the
4436 system's STREAM objects.
4437 * The Gray subclassable streams extension now works, thanks to a
4438 patch from Martin Atzmueller.
4439 * The full LOAD-FOREIGN extension (not just the primitive
4440 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4441 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4442 but like most other programs, it defaults to copying the Unix
4443 environment from the original process instead of starting the
4444 new process in an empty environment.
4445 * Extensions which manipulate the Unix environment now support
4446 an :ENVIRONMENT keyword option which doesn't smash case or
4447 do other bad things. The CMU-CL-style :ENV option is retained
4448 for porting convenience.
4449 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4450 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4452 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4454 * A patch from Martin Atzmueller seems to have solved the SIGINT
4455 problem, and as far as we know, signal-handling now works cleanly.
4456 (If you find any new bugs, please report them!)
4457 * The system no longer defaults Lisp source file names to types
4458 ".l", ".cl", or ".lsp", but only to ".lisp".
4459 * The compiler no longer uses special default file extensions for
4460 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4461 seems to expect a single default extension for all compiled code,
4462 and there's no compelling reason to try to stretch the standard
4463 to allow two different extensions.) Instead, byte-compiled files
4464 default to the same extension as native-compiled files.
4465 * Fasl file format version numbers have increased again, because
4466 a rearrangement of internal implementation packages made some
4467 dumped symbols in old fasl files unreadable in new cores.
4468 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4469 many fewer weird special cases.
4470 * Bug #17 (differing COMPILE-FILE behavior between logical and
4471 physical pathnames) has been fixed, and some related misbehavior too,
4472 thanks to a patch from Martin Atzmueller.
4473 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4474 by Tim Moore, ported to SBCL by Martin Atzmueller.
4475 * Martin Atzmueller fixed several filesystem-related problems,
4476 including bug #36, in part by porting CMU CL patches, which were
4477 written in part by Paul Werkowski.
4478 * More compiler warnings in src/runtime/ are gone, thanks to
4479 more patches from Martin Atzmueller.
4480 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4483 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4485 * DESCRIBE now works on CONDITION objects.
4486 * The debugger now handles errors which arise when trying to print
4487 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4489 * The build system now uses an additional file, customize-target-features.lisp,
4490 to allow local modifications to the target *FEATURES* list. (The point of
4491 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4492 debugging features enabled, without having to worry about propagating it
4493 into everyone's system when I do a "cvs update".) When no
4494 customize-target-features.lisp file exists, the target *FEATURES* list
4495 should be constructed the same way as before.
4496 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4497 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4498 warn about behavior which is undefined under the ANSI spec. Note: This
4499 is specified by ANSI, but it's not very popular with programmers.
4500 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4501 macro in the SBCL sources for an example of a workaround which you
4502 might use to make portable ANSI-standard code which does what you want.
4503 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4504 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4505 when it's used as a non-toplevel form. (This is required in order
4506 to implement the DEFCONSTANT-EQX macro.)
4507 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4508 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4509 funny things, due to bugs in the implementation of EVAL-WHEN
4510 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4511 non-toplevel DEFCONSTANTs are uncommon.)
4512 * The core file version number and fasl file version number have been
4513 incremented, because the old noncompliant DEFCONSTANT behavior involved
4514 calling functions which no longer exist, and because I also took the
4515 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4516 * fixed bug 1 (error handling before read-eval-print loop starts), and
4517 redid debugger restarts and related debugger commands somewhat while
4519 ** The QUIT debugger command is gone, since it did something
4520 rather different than the SB-EXT:QUIT command, and since it never
4521 worked properly outside the main toplevel read/eval/print loop.
4522 Invoking the new TOPLEVEL restart provides the same functionality.
4523 ** The GO debugger command is also gone, since you can just invoke
4524 the CONTINUE restart directly instead.
4525 ** The TOP debugger command is also gone, since it's redundant with the
4526 FRAME 0 command, and since it interfered with abbreviations for the
4528 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4530 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4531 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4532 some porting work by Martin Atzmueller)
4533 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4534 with a boatload of patches which he ported to SBCL. Now that those
4536 ** The system tries to make sure that its low-priority messages
4537 are prefixed by semicolons, to help people who like to use
4538 syntax highlighting in their ILISP buffer. (This patch
4539 was originally due to Raymond Toy.)
4540 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4541 patches originally written by Raymond Toy.
4542 ** The compiler understands coercion between single-value and
4543 multiple-VALUES type expressions better, getting rid of some very
4544 weird behavior, thanks to patches originally by Robert MacLachlan
4545 and Douglas Crosher.
4546 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4547 lambda lists, thanks to a patch originally by Pierre Mai.
4548 ** The system no longer bogusly warns about "abbreviated type
4550 ** The compiler gets less confused by inlining and RETURN-FROM,
4551 thanks to some patches originally by Tim Moore.
4552 ** The system no longer hangs when dumping circular lists to fasl
4553 files, thanks to a patch originally from Douglas Crosher.
4554 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4555 undefined function error.
4556 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4557 in structure slot initforms) for now, documented workaround instead:-|
4558 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4559 * fixed bug 5: added stubs for various Gray stream functions called
4560 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4561 installed, at least appropriate type errors are generated
4562 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4563 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4564 consistently in DEFMETHOD forms.
4565 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4566 it doesn't seem to affect SBCL after all
4567 * The C runtime system now builds with better optimization and many
4568 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4570 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4572 * The system is now under CVS at SourceForge (instead of the
4573 CVS repository on my home machine).
4574 * The new signal handling code has been tweaked to treat register
4575 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4576 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4577 downstream, e.g. in debug-int.lisp, has implicit dependencies
4578 on the unsignedness of integer representation of machine words,
4579 and that caused the system to bomb out with infinite regress
4580 when trying to recover from type errors involving signed values,
4581 e.g. (BUTLAST '(1 2 3) -1).)
4582 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4583 (This was one of the bugs Peter Van Eynde reported back in July.)
4584 * The system now uses code inspired by Colin Walters' O(N)
4585 implementation of MAP (from the cmucl-imp@cons.org mailing
4586 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4587 inline the MAP operation, and there is more than one
4588 sequence argument to the MAP call (so that it can't just
4589 do ETYPECASE once and for all based on the type of the
4590 single sequence argument). (The old non-inline implementation
4591 of the general M-argument sequence-of-length-N case required
4592 O(M*N*N) time when any of the sequence arguments were LISTs.)
4593 * The QUIT :UNIX-CODE keyword argument has been renamed to
4594 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4595 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4597 * Raymond Wiker's patches to port dynamic loading from Linux to
4598 FreeBSD have been added.
4599 * The BUGS file is now more nearly up to date, thanks in large part
4600 to Martin Atzmueller's review of it.
4601 * The debugger now flushes standard output streams before it begins
4602 its output ("debugger invoked" and so forth).
4603 * The core version number and fasl file version number have both
4604 been incremented, because of incompatible changes in the layout
4606 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4607 used to not be called for a saved Lisp image.)
4608 * Martin Atzmueller's version of a patch to fix a compiler crash,
4609 as posted on sbcl-devel 13 September 2000, has been installed.
4610 * Instead of installing Martin Atzmueller's patch for the
4611 compiler transform for SUBSEQ, I deleted the compiler transform,
4612 and transforms for some similar consing operations.
4613 * A bug in signal handling which kept TRACE from working on OpenBSD
4615 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4616 away by constant folding
4617 * The system now defines its address space constants in one place
4618 (in the Lisp sources), and propagates them automatically elsewhere
4619 (through GENESIS and the sbcl.h file). Therefore, patching the
4620 address map is less unnecessarily tedious and error-prone. The
4621 Lisp names of address space constants have also been systematized.
4622 * CVS tags like dollar-Header-dollar have been removed from
4623 the sources, because they have never saved me trouble and
4624 they've been source of trouble working with patches and other
4625 diff-related operations.
4626 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4627 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4629 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4631 * The system has been ported to OpenBSD.
4632 * The system now compiles with a simple "sh make.sh" on the systems
4633 that it's supported on. I.e., now you no longer need to tweak
4634 text in the target-features.lisp-expr and symlinks in src/runtime/
4635 by hand, the make.sh takes care of it for you.
4636 * The system is no longer so grossly inefficient when compiling code
4637 involving vectors implemented as general (not simple) vectors (VECTOR T),
4638 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4639 which dares to use the various sequence functions on non-simple
4640 vectors, takes less of a performance hit.
4641 * There is now a primitive type predicate VECTOR-T-P
4642 to test for the (VECTOR T) type, so that e.g.
4643 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4644 can now be compiled with some semblance of efficiency. (The old code
4645 turned the type declaration into a full call to %TYPEP at runtime!)
4646 * AREF on (VECTOR T) is still not fast, since it's still compiled
4647 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4648 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4649 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4650 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4651 without making full calls to SUBTYPEP at runtime.
4652 (Some analogous efficiency issues for non-simple vectors specialized to
4653 element types other than T, or for non-simple multidimensional arrays,
4654 have not been addressed. They could almost certainly be handled the
4655 same way if anyone is motivated to do so.)
4656 * The changes in array handling break binary compatibility, so
4657 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4658 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4659 instead of (VALUES T T).
4660 * By following the instructions that Dan Barlow posted to sbcl-devel
4661 on 2 July 2000, I was able to enable primitive dynamic object
4662 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4663 functionality is not implemented (since it calls ld to resolve
4664 library references automatically, requiring RUN-PROGRAM for its
4665 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4666 try to resolve library references) is now supported.
4667 * The system now flushes the standard output streams when it terminates,
4668 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4669 them at several other probably-convenient times, e.g. in each pass of
4670 the toplevel read-eval-print loop, and after evaluating a form given
4671 as an "--eval" command-line option. (These changes were motivated by a
4672 discussion of stream flushing issues on cmucl-imp in August 2000.)
4673 * The source transform for TYPEP of array types no longer assumes
4674 that an array whose element type is a not-yet-defined type
4675 is implemented as an array of T, but instead punts, so that the
4676 type will be interpreted at runtime.
4677 * There is now some support for cross-compiling in make.sh: each of
4678 the phases of make.sh has its own script. (This should be transparent
4679 to people doing ordinary, non-cross-compile builds.)
4680 * Since my laptop doesn't have hundreds of megabytes of memory like
4681 my desktop machine, I became more motivated to do some items on
4682 my to-do list in order to reduce the size of the system a little:
4683 ** Arrange for various needed-only-at-cold-init things to be
4684 uninterned after cold init. To support this, those things have
4685 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4686 symbols with such names are now uninterned after cold init).
4687 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4688 fasl files for cold load.
4689 ** Remove the old compiler structure pooling code (which used to
4690 be conditional on the target feature :SB-ALLOC) completely.
4691 ** Redo the representation of some data in cold init to be more compact.
4692 (I also looked into supporting byte compiled code at bootstrap time,
4693 which would probably reduce the size of the system a lot, but that
4694 looked too complicated, so I punted for now.)
4695 * The maximum signal nesting depth in the src/runtime/ support code has
4696 been reduced from 4096 to 256. (I don't know any reason for the very
4697 large old value. If the new smaller value turns out to break something,
4698 I'll probably just bump it back up.)
4699 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4701 * Many, many bugs reported by Peter Van Eynde have been added to
4702 the BUGS list; some have even been fixed.
4703 * While enabling dynamic object file loading, I tried to make the
4704 code easier to understand, renaming various functions and variables
4705 with less ambiguous names, and changing some function calling
4706 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4707 * While trying to figure out how to do the OpenBSD port, I tried to
4708 clean up some of the code in src/runtime/. In particular, I dropped
4709 support for non-POSIX signal handling, added various comments,
4710 tweaked the code to reduce the number of compilation warnings, and
4711 renamed some files to increase consistency.
4712 * To support the new automatic configuration functionality in make.sh,
4713 the source file target-features.lisp-expr has been replaced with the
4714 source file base-target-features.lisp-expr and the machine-generated
4715 file local-target-features.lisp-expr.
4716 * fixed a stupid quoting error in make.sh so that using CMU CL
4717 "lisp -batch" as cross-compilation host works again
4719 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4721 * DESCRIBE no longer tries to call itself recursively to describe
4722 bound/fbound values, so that it no longer fails on symbols which are
4723 bound to themselves (like keywords, T, and NIL).
4724 * DESCRIBE now works on generic functions.
4725 * The printer now prints less-screwed-up representations of closures
4726 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4727 * A private symbol is used instead of the :EMPTY keyword previously
4728 used to mark empty slots in hash tables. Thus
4729 (DEFVAR *HT* (MAKE-HASH-TABLE))
4730 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4731 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4732 now does what ANSI says that it should. (You can still get
4733 similar noncompliant behavior if bang on the hash table
4734 implementation with all the symbols you get back from
4735 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4736 This breaks binary compatibility, since tests for equality to
4737 :EMPTY are wired into things like the macroexpansion of
4738 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4740 * There's now a minimal placeholder implementation for CL:STEP,
4741 as required by ANSI.
4742 * An obscure bug in the interaction of the normal compiler, the byte
4743 compiler, inlining, and structure predicates has been patched
4744 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4745 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4747 * Missing ordinary arguments in a macro call are now detected even
4748 when the macro lambda list contains &KEY or &REST.
4749 * The debugger no longer complains about encountering the top of the
4750 stack when you type "FRAME 0" to explicitly instruct it to go to
4751 the top of the stack. And it now prints the frame you request even
4752 if it's the current frame (instead of saying "You are here.").
4753 * As specified by ANSI, the system now always prints keywords
4754 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4756 * The default initial SIZE of HASH-TABLEs is now smaller.
4757 * Type information from CLOS class dispatch is now propagated
4758 into DEFMETHOD bodies, so that e.g.
4759 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4761 is now basically equivalent to
4762 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4763 (DECLARE (TYPE SINGLE-FLOAT X))
4765 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4766 operation, without having to do run-time type dispatch.
4767 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4768 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4769 * Since I don't seem to be making big file reorganizations very often
4770 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4771 is overflowing my ability to conveniently back them up), I've finally
4772 checked the system into CVS. (The CVS repository is on my home system,
4773 not at SourceForge -- putting it on SourceForge might come later.)
4774 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4775 high-level GC-NOTIFY-FOO functions send their output. (There's
4776 still very little control of where low-level verbose GC functions
4777 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4778 less than it used to -- the GC-NOTIFY-FOO functions are now under
4779 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4780 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4781 in only one place in the source code, and propagates it automatically
4782 everywhere that it's needed. Thus e.g. when I bump the version from
4783 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4784 * The C source files now include boilerplate legalese and documentation
4785 at the head of each file (just as the Lisp source files already did).
4786 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4787 to his page will be replaced with a link to his new CLiki service.
4789 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4791 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4792 * The build process now looks for GNU make under the default name "gmake",
4793 instead of "make" as it used to. If GNU make is not available as "gmake"
4794 on your system, you can change this default behavior by setting the
4795 GNUMAKE environment variable.
4796 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4797 can build without error under CMU CL.
4799 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4801 * There is now a partial SBCL user manual (with some new text and some
4802 text cribbed from the CMU CL manual).
4803 * The beginnings of a profiler have been added (starting with the
4804 CMU CL profiler and simplifying and cleaning up). Eventually the
4805 main interface should be through the TRACE macro, but for now,
4806 it's still accessed through vaguely CMU-CL-style functions and macros
4807 exported from the package SB-PROFILE.
4808 * Some problems left over from porting CMU CL to the new
4809 cross-compilation bootstrap process have been cleaned up:
4810 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4811 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4812 part when getting rid of the compiler *BACKEND* stuff.)
4813 ** The value of *NULL-TYPE* was screwed up, because it was
4814 being initialized before the type system knew the final
4815 definition of the 'NULL type. This screwed up several key
4816 optimizations in the compiler, causing inefficiency in all sorts
4817 of places. (I found it because I wanted to understand why
4818 GET-INTERNAL-RUN-TIME was consing.)
4819 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4820 PROCLAIM FTYPE information. Unfortunately this broke binary
4821 compatibility again, since now the forms output by DEFGENERIC
4822 to refer to functions which didn't exist in 0.6.3.
4823 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4824 can use the new (as of 0.6.3) transform for SOME into MAP into
4826 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4827 values to (INTEGER 0 1000000), so that the time code will no longer
4828 occasionally get blown up by Linux returning 1000000 microseconds
4829 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4830 its output conform to the ANSI spec. (Alas, this makes its output
4831 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4832 * A full call to MAP NIL with a single sequence argument no longer conses.
4833 * fixes to problems pointed out by Martin Atzmueller:
4834 * The manual page no longer talks about multiprocessing as though
4835 it were currently supported.
4836 * The ILISP support patches have been removed from the distribution,
4837 because as of version 5.10.1, ILISP now supports SBCL without us
4838 having to maintain patches.
4839 * added a modified version of Raymond Toy's recent CMU CL patch for
4840 EQUALP comparison of HASH-TABLE
4842 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4844 * The system still can't cross-compile itself with
4845 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4846 entails), but at least it can compile more of itself that way
4847 than it used to be able to, and various buglets which were uncovered
4848 by trying to cross-compile itself that way have now been fixed.
4849 * This release breaks binary compatibility again. This time
4850 at least I've incremented the FASL file format version to 2, so that the
4851 problem can be detected reliably instead of just causing weird errors.
4852 * various new style warnings:
4853 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4854 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4855 ** using the lexical binding of a variable named in the *FOO* style
4856 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4857 as specified by ANSI.
4858 * *RANDOM-STATE* is no longer automatically initialized from
4859 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4860 default behavior of the system is to repeat its behavior every time
4861 it's run. If you'd like to change this behavior, you can always
4862 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4863 old convention there was no comparably easy way to get the system to
4864 repeat its behavior every time it was run.
4865 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4866 FTYPE declarations has been removed, in favor of their ANSI
4867 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4868 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4869 the types of their sequence arguments can be determined at compile time.
4870 This is done through a new open code expansion for MAP which eliminates
4871 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4872 argument types can be determined at compile time.
4873 * The optimizer now transforms COERCE into an identity operation when it
4874 can prove that the coerced object is already of the correct type. (This
4875 can be a win for machine generated code, including the output of other
4876 optimization transforms, such as the MAP transform above.)
4877 * Credit information has been moved from source file headers into CREDITS.
4878 * Source file headers have been made more standard.
4879 * The CASE macro now compiles without complaining even when it has
4882 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4884 * (Note that the way that the PCL macroexpansions were rewritten
4885 to accommodate the change in DEFGENERIC below breaks binary
4886 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4887 not run under sbcl-0.6.2. Once we get out of alpha releases,
4888 i.e. hit release 1.0.0, we'll probably try to maintain binary
4889 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4890 and sbcl-1.4.4. Until then, however, it might be fairly common
4891 for maintenance releases to break binary compatibility.)
4892 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4894 * The reporting of unhandled signals has been changed to print some
4895 explanatory text as well as the report form. (Previously only
4896 the report form was printed.)
4897 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4898 it defines, so that the compiler no longer issues undefined function
4899 warnings for compiled-but-not-yet-loaded generic functions.
4900 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4901 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4902 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4903 section of the ANSI spec are supported.
4904 * The "" nickname for the "KEYWORD" package has been removed.
4905 The reader still handles symbol tokens which begin with a package marker
4906 as keywords, but it doesn't expose its mechanism for doing so in the
4907 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4908 * The system now issues STYLE-WARNINGs for contradictory TYPE
4909 proclamations. (Warnings for contradictory FTYPE proclamations would
4910 be nice too, but those can't be done usefully unless the type system
4911 is made smarter about FUNCTION types.)
4912 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4913 systematized, so that "*target-*.lisp is supposed to exist only on the
4914 target and imply that there's a related file which exists on the
4915 host, and *host-*.lisp is supposed to exist only on the host and imply
4916 that there's a related file which exists on the target. This involves a
4917 lot of renaming. Hopefully the acute confusion caused by the renaming
4918 will be justified by the reduction in chronic confusion..
4919 ** runtime-type.lisp -> early-target-type.lisp
4920 ** target-type.lisp -> late-target-type.lisp
4921 ** early-host-format.lisp -> early-format.lisp
4922 ** late-host-format.lisp -> late-format.lisp
4923 ** host-error.lisp -> misc-error.lisp
4924 ** early-error.lisp -> early-target-error.lisp
4925 ** late-error.lisp -> late-target-error.lisp
4926 ** host-defboot.lisp -> early-defboot.lisp
4927 ** code/misc.lisp -> code/target-misc.lisp
4928 ** code/host-misc.lisp -> code/misc.lisp
4929 ** code/numbers.lisp -> code/target-numbers.lisp
4930 ** code/early-numbers.lisp -> numbers.lisp
4931 ** early-host-type.lisp -> early-type.lisp
4932 ** late-host-type.lisp -> late-type.lisp
4933 ** host-typep.lisp -> typep.lisp
4934 ** load.lisp -> target-load.lisp
4935 ** host-load.lisp -> load.lisp
4936 ** host-disassem.lisp -> disassem.lisp
4937 ** host-insts.lisp -> insts.lisp
4938 ** byte-comp.lisp -> target-byte-comp.lisp
4939 ** host-byte-comp.lisp -> byte-comp.lisp
4940 ** host-signal.lisp -> signal.lisp
4941 ** host-defstruct.lisp -> defstruct.lisp
4942 ** late-target-type.lisp -> deftypes-for-target.lisp
4943 Furthermore, several other previously target-only files foo.lisp (e.g.
4944 hash-table.lisp and random.lisp) have been split into a target-and-host
4945 foo.lisp file and a target-only target-foo.lisp file, with their key type
4946 definitions in the target-and-host part, so that the cross-compiler will
4947 know more about target types.
4948 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4949 gone away. In their place are various *BACKEND-FOO* variables
4950 corresponding to the slots of the old structure.
4951 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4952 into the target SBCL has been fixed.
4953 * The chill.lisp system for loading cold code into a running SBCL
4955 * Support for the CMU CL "scavenger hook" extension has been removed.
4956 (It was undocumented and unused in the CMU CL sources that SBCL was
4957 derived from, and stale in sbcl-0.6.1.)
4958 * Various errors in the cross-compiler type system were detected
4959 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4960 (enabling various consistency checks). Many of them were fixed,
4961 but some hard problems remain, so the compiler is back to
4962 running without *TYPE-SYSTEM-INITIALIZED* for now.
4963 * As part of the cross-compiler type system cleanup, I implemented
4964 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4965 * I have started adding UNCROSS calls throughout the type system
4966 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4967 on cross-compiler input files will be able to go away, and various
4969 * CONSTANTP now returns true for quoted forms (as explicitly required
4972 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4974 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4975 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4976 (MAKE-LIST -1). In the longer term, it ought to become true
4977 that declarations are assertions even at SAFETY 1. For now, it's not
4978 quite true even at SAFETY 3, but it's at least more nearly true..
4979 (Note that this change seems to increases the size of the system by
4980 O(5%) and to decrease the speed of the compiler by 20% or more.)
4981 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4982 for the problem of printing dozens of lines of distracting information
4983 about low-level system machinery as part of the top stack frame
4984 on entry to the debugger when an undefined function was called.
4985 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4986 is not reset to COMMON-LISP-USER.
4987 * Compilation of stuff related to dyncount.lisp has been made conditional
4988 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4989 smaller. The various dyncount-related symbols have been moved into
4990 a new "SB-DYNCOUNT" package.
4991 * tty-inspect.lisp has been renamed to inspect.lisp.
4992 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4993 feature has gone away. (When we eventually port to other flavors of
4994 libc and/or Unix, we'll try to make the differences between flavors
4995 invisible at the user level.)
4996 * Various other *FEATURES* tags, and/or their associated conditionals,
4997 have been removed if obsolescent, or given better documentation, or
4998 sometimes given more-mnemonic names.
5000 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5002 * tidied up "make.sh" script
5003 * tidied up system directory structure
5004 * better "clean.sh" behavior
5005 * added doc/FOR-CMUCL-DEVELOPERS
5006 * many many small tweaks to output format, e.g. removing possibly-confusing
5007 trailing #\. character in DESCRIBE-INSTANCE
5008 * (EQUALP #\A 'A) no longer signals an error.
5009 * new hashing code, including EQUALP hashing
5010 * tidied up Lisp initialization and toplevel
5011 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5012 * command line argument processing
5013 * added POSIX-GETENV function to deal with Unix-ish environment variables
5014 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5015 terminating SBCL on EOF
5016 * non-verbose GC by default
5017 * There is no more "sbcl" shell script; the sbcl file is now the C
5018 runtime executable (just like CMU CL).
5019 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5021 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5022 symbol and package information as Lisp native symbol and package objects
5023 instead of strings naming symbols and strings naming packages. This way,
5024 whenever packages are renamed (as in warm init), debug information is
5025 transformed along with everything else.
5026 * tweaked the optimization policy declarations which control the building
5027 of SBCL itself. Now, among other things, the system no longer saves
5028 source location debugging information. (This helps two problems at once
5029 by reducing SBCL size and by keeping SBCL from trying to look for its
5030 sources -- which may not exist -- when reporting errors.)
5031 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5032 debugging and testing purposes
5033 * cleaned up printing, making the printer call PRINT-OBJECT for
5034 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5035 methods, giving nearly-ANSI behavior
5036 * converted almost all special variables to use *FOO* naming convention
5037 * deleted PARSE-TIME functionality, since it can be done portably
5038 * moved some files out of cold init into warm init
5039 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5041 * regularized formatting of source files
5042 * added an install.sh script
5043 * fixed ridiculous memory usage of cross-compiler by making
5044 compiler/alloc.lisp not try to do pooling unless it can hook
5045 itself into the GC of the cross-compilation host. Now the system
5046 builds nicely on my old laptop.
5047 * added :SB-ALLOC in target-features.lisp-expr
5048 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5049 was not implemented)
5050 * re-did condition handling and note reporting in the compiler. Notes
5051 are no longer handled by signalling conditions. Style warnings
5052 and warnings are handled more correctly and reported in such a way
5053 that it's easy to find one or the other in your output (so that you
5054 can e.g. figure out which of many problems caused COMPILE-FILE to
5056 * changed the severity of several compiler warnings from full WARNING
5057 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5058 compiler note reporting so that it doesn't use the condition system
5059 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5060 COMPILE-FILE command)
5061 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5062 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5063 no longer supported, since their implementation was deeply intertwingled
5064 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5065 * removed bogus "support" for compiler macros named (SETF FOO), and
5066 removed the compiler macro for SETF INFO (but only after making a fool
5067 of myself on the cmucl-imp mailing list by posting a bogus patch for
5068 DEFINE-COMPILER-MACRO..)
5069 * Compiled files containing forms which have side effects on the Lisp
5070 reader (such as DEFPACKAGE forms) are now handled more correctly.
5071 (Compiler queuing of top level lambdas has been suppressed by setting
5072 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5073 * deleted various currently-unused source files, e.g. gengc.lisp. They
5074 may be added back at some point e.g. when porting to other architectures,
5075 but until they are it's distracting to distribute them and to try to
5077 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5078 there were so many of them they're just distractions, and UNCROSS is
5079 known to be able to handle the current sources
5080 * moved PROFILE functionality into TRACE, so that it will be clear
5081 how the wrapping and unwrapping of functions when you profile them
5082 interacts with the wrapping and unwrapping of functions when you
5083 trace them. (Actually, the functionality isn't there yet, but at least
5084 the interface specification is there. Hopefully, the functionality will
5085 arrive with some future maintenance release.)
5086 * removed host-oops.lisp
5087 * changed signature of QUIT function to allow UNIX-CODE argument
5088 * fixed READ-SEQUENCE bug
5089 * tweaked verbose GC output so that it looks more like the progress
5090 output that ANSI specifies for functions like LOAD
5091 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5092 * added <http://sbcl.sourceforge.com> to the banner information printed by