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.
10 * optimization: faster local calls on x86/x86-64
12 changes in sbcl-1.0.27 relative to 1.0.26:
13 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
14 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
15 * improvement: the system either recovers from stack exhaustion or dies
16 properly as opposed to leaving the user uncertain of whether the handler
17 trampled on some random memory next to the stack or having to rely on
18 --lose-on-corruption (which is still a good idea to use in production
19 because stack exhaustion can happen in signal handlers which will likely
21 * bug fix: fix gc related interrupt handling bug on ppc (regression from
22 1.0.25.37, reported by Harald Hanche-Olsen)
23 * bug fix: work around signal delivery bug in darwin (regression from
24 1.0.25.44, reported by Sidney Markowitz)
25 * bug fix: fix ERROR leaking memory (reported by David Thompson)
27 changes in sbcl-1.0.26 relative to 1.0.25:
28 * incompatible change: an interruption (be it a function passed to
29 INTERRUPT-THREAD or a timer function) runs in an environment where
30 interrupts can be enabled. The interruption can use
31 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
32 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
33 potentially running out of stack. Keep in mind that in the absence
34 of WITHOUT-INTERRUPTS some potentially blocking operation such as
35 acquiring a lock can enable interrupts.
36 * incompatible change: GC-OFF and GC-ON are removed, as they were
37 always unsafe. Use WITHOUT-GCING instead.
38 * new feature: runtime option --disable-ldb
39 * new feature: runtime option --lose-on-corruption to die at the
40 slightest hint of possibly non-recoverable errors: running out of
41 memory, stack, alien stack, binding stack, encountering a memory
42 fault, etc. In the absence of --lose-on-corruption a warning is
44 * enhancement: detect binding stack exhaustion
45 * enhancement: detect alien stack exhaustion on x86/x86-64
46 * improvement: generally more stable and reliable interrupt handling
47 * improvement: there is a per thread interruption queue,
48 interruptions are executed in order of arrival
49 * improvement: a repeating timer reschedules itself when the it has
50 finished, but expiration times are spaced equally. If an
51 expiration time is in the past it will trigger after a short grace
52 period that may give a chance to other things to run.
53 * optimization: slightly faster gc on multithreaded builds
54 * optimization: faster WITHOUT-GCING
55 * bug fix: when JOIN-THREAD signals an error, do it when not holding
56 important locks so that the debugger/handler doesn't produce
57 recursive errors or deadlock.
58 * bug fix: real-time signals are not used anymore, so no more
59 hanging when the system wide real-time signal queue gets full.
60 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
62 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
63 * bug fix: fix random memory faults related to interrupts on alpha
64 * bug fix: fix random memory faults related to interrupts on sparc
65 * bug fix: fix deadlocks related to starting threads
66 * bug fix: fix deadlines on locks on futex platforms
67 * bug fix: restore errno in signal handlers
68 * bug fix: fix deadlocks related to hash tables
69 * bug fix: fix deadlocks in pcl
71 changes in sbcl-1.0.25 relative to 1.0.24:
72 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
73 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
74 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
75 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
76 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
77 better name and does not return values so stale on multiprocessor systems.
78 Also, HOLDING-MUTEX-P was added for about the only sane usage of
80 * improvement: unithread builds keep track of MUTEX-VALUE.
81 * improvement: reading from a TWO-WAY-STREAM does not touch the output
82 stream anymore making it thread safe to have a concurrent reader and
83 a writer, for instance, in a pipe.
84 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
85 arguments, making compiler-macros for SETF-functions able to inspect
86 their constant arguments.
87 * improvement: COMPILE-FILE reports times with millisecond accuracy
88 (thanks to Luis Oliveira)
89 * optimization: CHAR-CODE type derivation has been improved, making
90 TYPEP elimination on subtypes of CHARACTER work better. (reported
91 by Tobias Rittweiler, patch by Paul Khuong)
92 * bug fix: setting alien structure fields of type struct by value now
93 computes the right offset for the memory copy.
94 * bug fix: compilation problem involving inlined calls to aliens with
95 result type VOID. (reported by Ken Olum)
96 * bug fix: #235a; sequential inline expasion in different policies no
97 longer reuses the functional from the previous expansion site.
98 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
99 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
100 * bug fix: named ENUMs in multiply-referenced alien record types no longer
101 cause an implied type redefinition. Regression from 1.0.21.29.
102 * bug fix: sign-extension of small signed return values now works with C
103 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
104 * improvements to the Windows port:
105 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
106 Westfold, thanks to Rudi Schlatte)
108 changes in sbcl-1.0.24 relative to 1.0.23:
109 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
110 vector of a multidimensional SIMPLE-ARRAY.
111 * new feature: the system now signals a continuable error if standard
112 readtable modification is attempted. (thanks to Tobias Rittweiler)
113 * new feature: DIRECTORY has been extended with a non-standard keyword
114 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
115 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
116 has been robustified and documented better. (thanks to Robert Goldman)
117 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
118 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
119 * tradeoff: constant FORMAT control strings are now compiled unless
120 SPACE > SPEED (previously only when SPEED > SPACE.)
121 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
123 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
125 * bug fix: lexical type declarations are now correctly reported by
126 SB-CLTL2. (reported by Larry D'Anna)
127 * bug fix: STRING-TO-OCTETS did not handle :START properly when
128 using UTF-8 as external format. (thanks to Luis Oliveira)
129 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
130 are signalled correctly. (thanks to Stas Boukarev)
131 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
132 designator. (thanks to Tobias Rittweiler)
133 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
134 designator, and returns T instead of the function. (thanks to
136 * bug fix: direct superclasses of STANDARD-CLASS and
137 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
138 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
139 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
140 when no class with the named slot yet exists no longer causes a
141 compile-time style-warning.
142 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
143 in safe code. (reported by Didier Verna)
144 * bug fix: #430; nested structure constructors can stack allocate.
145 * bug fix: on some 64-bit platforms dynamic space size was truncated
146 to #xffff0000 bytes. (reported by Benjamin Lambert)
147 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
148 REPL unusable. (reported by Daniel Herring)
149 * bug fix: return values of READ-SEQUENCE did not take :START into
150 account on file streams, regressions since 1.0.12.22. (reported by
151 Thomas Russ, patch by Paul Khuong)
152 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
153 method specializer used to confuse permuation vector optimization.
154 * bug fix: system inserted bogus implicit type declarations for local
155 special variables in DEFMETHOD bodies.
156 * bug fix: #354; duplicated frames in backtraces due to
157 non-tail-call-optimized XEPs to functions with return type NIL
159 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
160 initializes structure object slots according to DEFSTRUCT initforms,
161 and DEFSTRUCT forms :INCLUDEind structure classes defined using
162 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
163 (reported by Bruno Haible and Stephen Wilson)
164 * bug fix: #395; fill-pointer output streams used now support
165 element-type BASE-CHAR as well.
166 * bug fix: compiler error when attempting to derive return value of
167 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
169 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
171 * bug fix: Mac OS X binaries should now be portable between Leopard
174 changes in sbcl-1.0.23 relative to 1.0.22:
175 * enhancement: when disassembling method functions, disassembly
176 for the associated fast function is also produced.
177 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
179 * optimization: printing with *PRINT-PRETTY* true is now more
180 efficient as long as the object being printed doesn't require
181 special handling by the pretty printer.
182 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
183 now interact correctly with type declarations.
184 * partial bug fix: PCL detects infinite recursion during wrapper
185 validation. (thanks to Attila Lendvai)
186 * bug fix: #426; nested function calls are inlined properly.
187 Previously if FOO was an inline function, in calls of the form
188 (FOO (FOO ...)) the outer call was not inlined.
189 * bug fix: long long arguments passed in registers to alien
190 functions on PowerPC Linux and NetBSD are now handled correctly
191 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
193 changes in sbcl-1.0.22 relative to 1.0.21:
194 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
195 for the shared object in the current directory, but passes the native
196 namestring of the designated pathname to the operation system's shared
197 object loading function as-it.
198 * minor incompatible change: --disable-debugger toplevel option now takes
199 effect before processing of initialization files and --eval or --load
201 * new feature: new commandline argument: --script, which supports
202 shebang lines. See documentation for details. (based on work by
204 * new feature: SAVE-LISP-AND-DIE can save current values of
205 --dynamic-space-size and --control-stack-size in the executable core,
206 causing it to skip normal runtime option processing. See documentation
207 for details. (thanks to Zach Beane)
208 * enhancement: inoccous calls to EVAL or generic functions dispatching
209 on subclasses of eg. STREAM no longer cause compiler notes to appear.
210 * enhancement: the system no longer resignals errors from --load and
211 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
212 associated with the original error to be lost. (thanks to Ariel
214 * enhancement: :DONT-SAVE keyword argument has been added to
215 LOAD-SHARED-OBJECT for controlling interaction with
216 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
217 the effects of an earlier LOAD-SHARED-OBJECT call.
218 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
219 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
220 provided. (reported by Cedric St-Jean)
221 * bug fix: circularity handling in the reader did not treat raw
222 structure slots correctly. (reported by Cedric St-Jean)
223 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
224 file descriptors when there were none.
225 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
226 was broken. (reporteed by Willem Broekema)
227 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
228 pathnames without a directory.
229 * bug fix: COMPILE-FILE did not warn about undefined variable
230 references at toplevel, and LOAD of the resulting fasl did
232 * bug fix: functions with non-required arguments used to end up with
233 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
234 * bug fix: redefining a function with non-required arguments didn't
235 update the system's knowledge about its call signature properly.
236 * bug fix: fixed #431; incompatible alien record type redefinitions
237 are detected and handled. (reported by Neil Haven)
238 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
239 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
241 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
242 after alien stack frames.
243 * bug fix: strings passed to mk{s,d}temp lacked null termination
245 changes in sbcl-1.0.21 relative to 1.0.20:
246 * new feature: the compiler is able to track the effective type of a
247 generic function across method addition and removal.
248 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
249 appropriately typed structure slots without locking.
250 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
251 information like those gathered by TIME using a programming-friendly
253 * new feature: TIME reports time taken even if the form performs a
254 non-local transfer of control.
255 * enhancement: reduced conservativism on GENCGC platforms: on
256 average 45% less pages pinned (measured from SBCL self build).
257 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
258 mutate constant symbols or violate declaimed type of the symbol.
259 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
260 sleeping on the semaphore in heavily contested semaphores.
261 * bug fix: semaphores and condition variables were not interrupt
263 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
264 owned by other threads anymore.
265 * bug fix: FIND on lists called KEY outside the specified
266 subsequence. (reported by budden)
267 * bug fix: LOG doesn't use single-float intermediate results when
268 given mixed integer and double-float arguments, leading to better
269 precision. (reported by Bob Felts)
270 * bug fix: LOG with base zero returned values of inconsistent type.
272 changes in sbcl-1.0.20 relative to 1.0.19:
273 * minor incompatible change: OPTIMIZE qualities
274 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
275 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
276 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
277 * documentation: some slot access efficiency guidelines have been
278 added to the user manual.
279 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
280 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
281 as ASSOC and MEMEBER.
282 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
283 to more efficient EQ-comparison versions more often.
284 * optimization: enhanced derivation of DOLIST iteration variable type
286 * optimization: constant folding of simple (LIST ...) forms as DOLIST
288 * optimization: runtime lookup of function definitions can be
289 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
290 * optimization: compiler is able to derive the return type of
291 (AREF (THE STRING X) Y) as being CHARACTER.
292 * optimization: CLRHASH on empty hash-tables no longer does pointless
293 work. (thanks to Alec Berryman)
294 * optimization: REPLACE deftransforms don't punt when :START1 or
296 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
297 no longer emits a code deletion note. (reported by Andrew
299 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
300 functions with an odd number of &OPTIONAL arguments, a &REST
301 argument, and one or more &KEY arguments at the call site.
302 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
303 arguments appeared at call sites as well.
304 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
305 READ-LINE &co can no longer read from them afterwards. (reported
307 * bug fix: fixed #427: unused local aliens no longer cause compiler
308 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
310 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
311 alien-stack leakage. (reported by Andy Hefner)
312 * bug fix: PROGV signals an error when an attempt to violate declared
313 type of a variable or bind a constant is made.
314 * bug fix: SET signals an error when an attempt to violate declared
315 type of a variable is made.
316 * bug fix: restart computation during the execution of a restart
317 test function no longer causes infinite recursion. (reported by
319 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
320 signals an error. (thanks to Pierre Mai)
321 * bug fix: EXPORT left symbol unexported in conflict situations.
322 (thanks to Michael Weber)
323 * bug fix: correctly handle name conflicts involving CL:NIL.
324 (thanks to Michael Weber)
325 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
326 conflicts arising from USEing package with conflicting symbols
327 correctly. (thanks to Michael Weber)
329 changes in sbcl-1.0.19 relative to 1.0.18:
330 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
331 warnings that go otherwise unhandled will be muffled if they are
332 of the type that's the value of this variable.
333 * optimization: stack allocation is slightly more efficient on x86
335 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
336 where a raw slot always is initialized using the initform whose
337 type is not know sufficiently well a compile-time are now compiled
338 correctly. (reported by John Morrison)
339 * bug fix: compiler no longer makes erronous assumptions in the
340 presence of non-foldable SATISFIES types.
341 * bug fix: stack analysis missed cleanups of dynamic-extent
342 arguments in non-let-converted calls to local functions.
343 * improvements to the Windows port:
344 ** adjusted address spaces for building on both Win32 and
345 Win64. (thanks for John Connors)
346 * fixed some bugs revealed by Paul Dietz' test suite:
347 ** interval arithmetic during type derivation used inexact integer
348 to single-float coercions.
349 ** arithmetic operations involving large integers and single
350 floats give the same results in compiled and interpreted code.
351 ** deriving the result type of COERCE no longer signals an error
352 if the derived type of the second argument is a MEMBER type
353 containing invalid type specifiers.
354 ** ADJOIN with constant NIL as second argument works correctly.
355 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
357 changes in sbcl-1.0.18 relative to 1.0.17:
358 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
359 profiles only the current thread.
360 * minor incompatible change: changes to SYMBOL-VALUE of constants
361 defined with DEFCONSTANT now signal an error.
362 * enhancement: SB-SPROF now has support for wallclock profiling,
363 and is also able to profile specific threads. REPORT output
364 has also additional sorting options.
365 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
367 * optimization: structure allocation has been improved
368 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
369 ** out of line constructors are ~10% faster.
370 ** inline constructors are ~15% faster.
371 ** inline constructors are capable of dynamic extent allocation
372 (generally on x86 and x86-64, in some cases on other platforms
374 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
376 * optimization: file compiler is now able to coalesce non-circular
377 lists, non-base strings, and bit-vectors. Additionally, constants
378 are never referenced through SYMBOL-VALUE at runtime.
379 * optimization: code defining methods on PRINT-OBJECT (and other
380 generic functions in the COMMON-LISP package) now loads faster.
381 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
383 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
384 fasl is now deleted. (reported by Attila Lendvai)
385 * bug fix: READ-LINE always returned NIL for the last line in files.
386 (reported by Yoshinori Tahara)
387 * bug fix: more accurate disassembly annotations of foreign function
388 calls. (thanks to Andy Hefner)
389 * bug fix: trimming non-simple strings and non-string string
390 designators when the there is nothing to trim works properly.
391 (thanks to James Knight)
392 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
393 (thanks to Travis Cross)
394 * fixed some bugs revealed by Paul Dietz' test suite:
395 ** NIL is a valid function name (regression at 1.0.13.38)
396 ** FILL on lists was missing its return value (regression at 1.0.12.27)
397 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
398 fill pointers properly (regression at 1.0.12.23)
399 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
400 displacement indices properly (regression at 1.0.12.23)
402 changes in sbcl-1.0.17 relative to 1.0.16:
403 * temporary regression: user code can no longer allocate closure
404 variable storage on stack, due to bug 419 without explicitly
405 requesting it. Please consult sbcl-devel for advice if you need to
406 use this feature in the meanwhile.
407 * new feature: runtime argument --control-stack-size can be used to
408 adjust thread default control stack size.
409 * enhancement: improved TIME output
410 ** all times are reported using the measured accuracy (milliseconds
411 for real and GC times, microseconds for everything else.)
412 ** processor cycle counts on x86 and x86-64.
413 ** interpreted forms are counted for both evaluator modes.
414 ** number of lambdas converted by the compiler is reported.
415 ** CPU percentage report (computed from real and total run time.)
416 ** more comprehensive run time reporting, using a condenced format
417 ** interperted form, lambda, and page fault counts are omitted
419 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
421 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
422 * optimization: two argument forms of LAST are upto ~10% faster
423 in normal SPEED policies.
424 * optimization: NCONC no longer needs to heap cons its &REST list
425 in normal SPEED policies.
426 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
428 * bug fix: UNION and NUNION work with :TEST-NOT once more,
429 regression since 1.0.9.1. (thanks to Eric Marsden)
430 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
431 since 1.0.15.36. (thanks to Paul Khuong)
432 * bug fix: LAST when always returned the whole list when given a bignum
433 as the second argument.
434 * bug fix: dynamic extent allocation of nested lists and vectors
435 could leak to otherwise accessible parts.
436 * bug fix: invalid optimization of heap-allocated alien variable
438 * bug fix: fasl header checking is less vulnerable to different
439 platform word lengths.
440 * bug fix: more correct assembler syntax for GNU binutils
441 2.18.50.0.4 support. (thanks to Marijn Schouten)
442 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
444 * bug fix: the fopcompiler can handle LOCALLY forms (with no
445 declarations) successfully. (reported by Attila Lendvai)
447 changes in sbcl-1.0.16 relative to 1.0.15:
448 * minor incompatible change: revert the changes to sb-posix's error
449 signaling added in 1.0.14.
450 * minor incompatible change: change PROBE-FILE back to returning
451 NIL whenever we can't get a truename, as was the case before 1.0.14.
452 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
453 inherits from ERROR instead of just CONDITION.
454 * new feature: SB-INTROSPECT can provide source locations for instances
455 as well. (thanks to Tobias Rittweiler)
456 * optimization: binding special variables now generates smaller code
457 on threaded platforms.
458 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
459 and cases where no :TEST is given but the compiler can infer that
460 the element to search is of type (OR FIXNUM (NOT NUMBER)).
461 * optimization: better LOGNOT on fixnums.
462 * optimization: modular arithmetic for a particular requested width
463 is implemented using a tagged representation unless a better
464 representation is available.
465 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
466 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
467 for wellformedness and returns a specialized vector. (reported by
468 Francois-Rene Rideau)
469 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
470 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
471 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
472 unscheduling timer at the same time as another timer fires.
473 * bug fix: don't reschedule timers for dead threads.
474 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
475 * bug fix: copying output from RUN-PROGRAM to a stream signalled
476 bogus errors if select() was interrupted.
477 * enhancement: add support for fcntl's struct flock to SB-POSIX.
479 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
480 * enhancement: cleaner backtraces for interactive interrupts, as
481 well as other cases where the interesting frames used to be
482 obscured by interrupt handling frames.
483 * enhancement: untracing a whole package using (UNTRACE "FOO") is
484 now supported, and tracing a whole package using (TRACE "FOO") now
485 traces SETF-functions as well.
486 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
487 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
488 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
489 * unreadably printed representation of hash-tables now includes
491 * bug fix: partially fixed #188: type propagation from assignments
492 is now more efficient.
493 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
494 'DOUBLE-FLOAT) are not flushable.
495 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
496 full address of the object, and none of the tag bits.
497 * bug fix: readably printing hash-tables now respects other printer
498 control variables. (reported by Cedric St-Jean)
499 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
500 keyword with MAKE-HASH-TABLE.
501 * bug fix: export SB-POSIX:MKSTEMP.
502 * bug fix: SORT was not interrupt safe.
503 * bug fix: XREF accounts for the last node of each basic-block as
505 * bug fix: MAKE-INSTANCE optimizations interacted badly with
506 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
507 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
508 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
509 create obsolete instances in the case of redefinition or
510 obsoletion of a superclass. (thanks to Andy Hefner)
511 * bug fix: Support for the Alpha architecture has been revived; it had
512 suffered somewhat from lack of maintenance since sbcl-1.0.
513 * improvements to the Windows port:
514 ** The system detects the codepage to use at startup, instead of
515 using the value from the saved core. (thanks to Kei Suzuki)
517 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
518 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
519 (see documentation for details.)
520 * revived support for OpenBSD (contributed by Josh Elsasser)
521 * partially fixed bug #108: ROOM no longer suffers from occasional
522 (AVER (SAP= CURRENT END)) failures.
523 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
524 bodies no longer cause a WARNING to be signalled. (reported by
526 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
527 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
528 the bug in TRUNCATE.) (reported by Michael Weber)
529 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
530 no samples. (reported by Andy Hefner)
531 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
532 no longer appear as (NIL ...) frames in backtraces.
533 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
534 is now actually exported from SB-EXT as documented. (reported by
536 * bug fix: sb-aclrepl now correctly understands how to inspect
537 single-floats on 64-bit platforms where single-floats are not boxed.
538 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
539 yet been finalized. (reported by Levente Meszaros)
540 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
541 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
542 SBCL-specific optimize qualities.
544 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
545 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
546 an executable in the search path, and does so in the child
547 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
548 been removed; it can be found in the CVS history, for somebody who
549 needs that search behavior (see the manual).
550 * minor incompatible change: compiler policy re. weakening type
551 checks has changed: now type checks are weakened only if SAFETY < 2
553 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
554 unparsing of directory pathnames as files. Analogously,
555 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
556 filename to parse into a directory pathname.
557 * enhancement: implicit generic function creation now signals a
558 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
559 users can bind handlers for and muffle around calls to LOAD.
560 * enhancement: RUN-PROGRAM allows unicode arguments and environments
561 to be used (using the default stream external format), and allows
562 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
563 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
564 strings and vectors whose element-type or simplicity is not fully
565 known at compile-time.
566 * optimization: STRING-TRIM and related functions no longer allocate
567 a new string when no trimming needs to be performed. These functions
568 are also faster than before when the input string has been declared
570 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
571 * optimization: READ-LINE is significantly faster for files containing
573 * optimization: non-open coded uses of character comparison operators
574 (e.g. char=) no longer cons when called with more than one parameter
575 on platforms supporting dynamic-extent allocation.
576 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
577 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
578 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
580 * bug fix: some sequence functions elided bounds checking when
582 * bug fix: too liberal weakening of union-type checks when SPEED >
584 * bug fix: more bogus fixnum declarations in ROOM implementation
587 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
588 * new feature: MAKE-HASH-TABLE now experimentally accepts a
589 :SYNCHRONIZED argument, which makes the hash-table safe for
590 concurrent accesses (but not iteration.) See also:
591 SB-EXT:WITH-LOCKED-HASH-TABLE, and
592 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
593 * optimization: CONCATENATE on strings is an order of magnitude faster
594 in code compiled with (> SPEED SPACE).
595 * optimization: SUBSEQ is ~50% faster on lists.
596 * bug fix: bug 417 fixed -- source location reporting is now more robust.
597 * bug fix: SUBSEQ on a list will now correctly signal an error if if
598 END is smaller then START.
599 * bug fix: SB-PROFILE will no longer report extra consing for nested
600 calls to profiled functions.
601 * bug fix: ROOM implementation had bogus fixnum declarations which
602 could cause type-errors when calling ROOM on large images.
603 * bug fix: if file compilation is aborted, the partial fasl is now
604 deleted, and COMPILE-FILE returns NIL as the primary value.
605 * bug fix: number of thread safety issues relating to SBCL's internal
606 hash-table usage have been fixed.
607 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
608 be returned from its body when the values were being returned
609 using unknown-values return convection and the W-P-O was wrapped
610 inside an UNWIND-PROTECT.
611 * bug fix: sb-posix should now compile again under Windows, enabling
614 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
615 * incompatible change: hash-table accessor functions are no longer
616 automatically protected by locks. Concurrent accesses on the same hash-table
617 from multiple threads can give inconsistent results or even corrupt the
618 hash-table completely. Multi-threaded applications should do their own
619 locking at the correct granularity. In the current implementation it is
620 still safe to have multiple readers access the same table, but it's not
621 guaranteed that this property will be maintained in future releases.
622 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
623 and will signal an error at runtime.
624 * enhancement: SB-THREAD package now exports a semaphore interface.
625 * enhancement: CONS can now stack-allocate on x86 and
626 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
628 * enhancement: nested lists can now be stack allocated on
629 platforms providing stack allocation support.
630 * enhancement: dynamic-extent support has been extended to support
631 cases where there are multiple possible sources for the stack
633 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
634 if the mutex is uncontested on Linux.
635 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
636 as specified by the CLHS. (thanks to Tobias Rittweiler)
637 * bug fix: NaN comparison now works on x86-64.
638 * bug fix: CLOSE :ABORT T on a stream with pending output now
640 * bug fix: instances of non-standard metaclasses using standard
641 instance structure protocol sometimes missed the slot type checks
643 * bug fix: known functions can be inlined in high-debug code.
645 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
646 * minor incompatible change: the MSI installer on Windows no longer
647 associates .lisp and .fasl files with the installed SBCL.
648 * minor incompatible change: :UNIX is no longer present in *FEATURES*
649 on Windows. (thanks to Luis Oliviera)
650 * new feature: SB-CLTL2 contrib module now implements
651 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
652 * optimization: scavenging weak pointers is now more efficient,
653 requiring O(1) instead of O(N) per weak pointer to identify
654 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
655 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
656 method bodies using constant slot-names when the first argument is
657 a specializer parameter for the method.
658 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
659 names, when the class of the instance is a direct instance
660 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
661 as slow as the constant slot-name case.)
662 * optimization: member type construction is now O(N) instead
664 * optimization: UNION and NUNION are now O(N+M) for large
665 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
667 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
668 now more readable in environments like Slime which display it.
669 (thanks to Tobias C. Rittweiler)
670 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
671 was able to infer the correct argument type for the object on which
672 the CAS operation was being performed.
673 * bug fix: copy propagation interfered with parallel assignment
674 semantics in local calls. (reported by Paul Khuong)
675 * bug fix: the signed modular fixnum shift compiled to wrong code on
676 x86 and x86-64. (spotted by a slight modification to some of
679 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
680 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
681 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
682 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
684 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
685 and generic function now print the object identity for anonymous
686 instances. (thanks to Attila Lendvai)
687 * enhancement: as an extension to MOP, SBCL now supports SETF of
688 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
689 (thanks to Attila Lendvai)
690 * enhancement: sb-cover has an alternate annotation mode which puts
691 the form annotations at the car of the form, instead of annotating
692 it completely. The benefit of this mode is that it shows better
693 which forms were instrumented by the compiler.
694 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
695 by printer control variables. (reported by Dan Corkill)
696 * bug fix: system leaked memory when delayed output was performed by
697 the OS in smaller chunks then expected. (thanks to David Smith)
698 * bug fix: system leaked memory when file streams were not closed
700 * bug fix: large objects written to slow streams that were modified
701 after the write could end up with the modified state written to
702 the underlying file descriptor.
703 * bug fix: multiple threads operating in parallel on the same stream
704 could cause buffer-overflows.
705 * bug fix: source location information is stored correctly
706 (broken since 1.0.6). This bug would generally show up as the
707 Slime debugger highlighting the wrong form when the sldb-show-source
709 * bug fix: Branch forms are again annotated as branches in the sb-cover
711 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
712 on x86-64. (reported by Gregory Vanuxem)
713 * bug fix: EQUALP could return wrong results for structures with raw
714 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
715 word). (reported by Vjacheslav Fyodorov)
716 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
719 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
720 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
721 atomic compare-and-swap operations on threaded platforms.
722 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
723 allows assigning a global minimum value to optimization qualities
724 (overriding proclamations and declarations).
725 * enhancement: closed over variables can be stack-allocated on x86
727 * performance bug fix: GETHASH and (SETF GETHASH) are once again
729 * optimization: slot definition lookup is now O(1). This speeds up
730 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
731 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
732 * optimization: ASSOC and MEMBER can now be open-coded for all
733 combinations of keyword arguments when second argument is constant
734 and SPEED >= SPACE. In other cases a specialized version is
736 * bug fix: using obsoleted structure instances with TYPEP and
737 generic functions now signals a sensible error.
738 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
739 (reported by Kristoffer Kvello)
740 * bug fix: backtrace construction is now more careful when making
741 lisp-objects from pointers on the stack, to avoid creating bogus
742 objects that can be seen by the GC.
743 * bug fix: defaulting of values in contexts expecting more than 7
744 variables now works on x86-64. (reported by Christopher Laux)
745 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
747 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
748 as the property-list of a symbol.
749 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
750 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
751 situations requested, are once again file-compileable. (reported
754 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
755 * MOP improvement: support for user-defined subclasses of
756 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
757 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
758 the expansion of DEFMETHOD, is responsible for generating a form
759 which creates a list of specializers when evaluated. Additional
760 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
761 debugging and introspective support.
762 * minor incompatible change: the (unsupported) spinlock interface
763 has changed: free spinlock now has the value NIL, and a held spinlock
764 has the owning thread as its value.
765 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
766 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
768 * enhancement: name of a socket-stream is now "a socket" instead of
770 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
771 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
772 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
773 for generic functions. (Thanks to Tobias C. Rittweiler)
774 * optimization: bignum printing speed has been improved by 20-40%
775 (depending on the bignum size.)
776 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
778 * bug fix: the cache used by the CLOS to store precomputed effective
779 methods, slot offsets, and constant return values is now thread and
781 * bug fix: generic function dispatch function updating is now thread
782 and interrupt safe (in the sense that the known issues have been
784 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
785 * bug fix: interning EQL-specializers is now thread and interrupt safe.
786 * bug fix: asdf systems with dependencies to the SB-POSIX or
787 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
788 * bug fix: interrupt safety of applicable method computation has been
791 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
792 * new contrib: sb-cover, an experimental code coverage tool, is included
794 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
795 significantly faster.
796 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
797 produce more efficient code on x86-64 if the compiler can determine
798 that (+ INDEX <constant>) does not require a bounds check and FOO
799 has an element type at least 8 bits wide.
800 * enhancement: a new, experimental synchronous timeout facility is
801 provided. Refer to SB-SYS:WITH-DEADLINE for details.
802 * enhancement: when a symbol name conflict error arises, the
803 conflicting symbols are always printed with a package prefix.
804 (thanks to Kevin Reid)
805 * enhancement: stepping is now once again supported on the SPARC and
806 MIPS platforms. (It is also now more likely to work on CheneyGC
808 * enhancement: sb-sprof can now also track and report accurate call
810 * bug fixes: the treatment of non-standard subclasses of
811 SB-MOP:SPECIALIZER is more correct.
812 * incompatible change: PURIFY no longer copies the data from the
813 dynamic space into the static and read-only spaces on platforms
814 that use the generational garbage collector
815 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
817 * bug fix: GC race condition occasionally resulting in crashes with
818 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
820 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
822 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
823 a STYLE-WARNING to be signalled (regression from 1.0.4.)
824 * bug fix: an asynchronous interrupt could previously leave the
825 system running with GC inhibited.
826 * bug fix: a DECLARE form evaluated at top-level now causes an error
827 rather than silently (or verbosely) returning NIL.
828 * bug fix: trying to dissassemble functions compiled at high DEBUG could
829 result in a error being signalled due to source form lookup errors.
830 (reported by Peter Graves)
832 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
833 * incompatible change: removed writer methods for host-ent-name,
834 host-ent-addresses -- changing the values did not update the DNS
836 * minor incompatible change: changed experimental JOIN-THREAD interface
837 * documentation: the manual now lists reader and writer methods
838 in class slot documentation sections. (thanks to Richard M Kreuter)
839 * documentation: unwinding from asyncronous events has been
840 documented as unsafe.
841 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
842 in multithreaded application code.
843 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
844 platforms. (thanks to James Anderson for the optimization hint)
845 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
847 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
848 variants no longer cons.
849 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
850 their NOT- variants no longer cons.
851 * optimization: EQUAL hash tables no longer use SXHASH for objects
852 of all data types, but instead use an EQL hash for types for which
853 EQUAL is the same as EQL.
854 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
855 are significantly faster.
856 * optimization: new STRING-OUTPUT-STREAM implementation is much
857 faster for large outputs and conses 30% less on average.
858 * enhancement: XREF information is now collected for references made
859 to global variables using SYMBOL-VALUE and a constant argument.
860 * enhancement: SIGINT now causes a specific condition
861 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
862 * bug fix: FILE-POSITION used to signal an error in some cases where
863 ANSI requires it to return NIL.
864 * bug fix: ADJUST-ARRAY is now interrupt-safe.
865 * bug fix: adding and removing fd-handlers is now interrupt-safe.
866 * bug fix: inlined calls to C now ensure 16byte stack alignment on
868 * bug fix: bad type declaration in the CLOS implementation has
869 been fixed. (reported by James Anderson)
870 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
871 (thanks to Lutz Euler)
872 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
873 required by the CLHS. (reported by Samium Gromoff)
874 * bug fix: dead unbound variable references now signal an error.
875 (reported by Marco Monteiro)
876 * bug fix: / with an unused value was being deleted in safe code.
877 (thanks to Marco Monteiro and Kevin Reid)
878 * bug fix: number of characters that can be written onto a single
879 line in a file is unlimited.
880 * bug fix: some GC deadlocks caused by asynchronous interrupts have
881 been fixed by inhibiting interrupts for when GC is disabled.
882 * bug fix: some interrupt safety issues with GETHASH, (SETF
883 GETHASH), CLRHASH and REMHASH have been fixed.
884 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
885 specifier no longer causes infinite recursion.
886 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
887 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
888 * bug fix: an &environment argument with the correct variable information
889 is passed to macros that are expanded during byte compilation.
890 (reported by Samium Gromoff)
891 * bug fix: a logic error was causing the hash function for bignums to
892 have excessive amounts of collisions. (reported by Faré Rideau)
893 * bug fix: modifying the contents of an array could change the return
894 value of SXHASH on that array, which is only allowed for strings
895 and bit vectors. (bug introduced in 0.9.16)
896 * improvement: the x86-64/darwin port now passes all tests (except
897 for the debugger tests) but should still be considered
898 experimental until this is fixed.
899 * improvement: a style-warning is signaled for CASE (etc) clauses with
900 duplicate keys. (thanks to Kevin Reid)
901 * improvement: macos/x86 and macos/x86-64 now use mach exception
902 handlers for dealing with illegal instructions (for trapping and
903 error handling) and memory protection violations (for GC).
905 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
906 * new platform: experimental support for x86-64/darwin (MacOS).
907 * incompatible change: the thread-safe (on most platforms) getaddrinfo
908 and getnameinfo sockets functions are used instead of gethostbyaddr
909 and gethostbyname, on platforms where the newer functions are available.
910 As a result, the ALIASES field of HOST-ENT will always be NIL on these
912 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
913 don't print the startup banner, but behave as if --noinform was passed
914 as a command line argument. (thanks to Kevin Reid)
915 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
916 * optimization: code using alien values with undeclared types is much faster.
917 * optimization: the compiler is now able to open code SEARCH in more cases.
918 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
919 * bug fix: using standardized COMMON-LISP special variables as loop
920 variables no longer signals bogus package lock violations. (reported
922 * bug fix: declaring local loop variables to be of a range-limited type
923 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
924 (reported by Andras Simon)
925 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
926 bugs remain on x86-64.)
927 * bug fix: the #= and ## reader macros now interact reasonably with
928 funcallable instances.
929 * bug fix: type-checks for function arguments were compiled using the
930 compiler policy settings of the wrong lexical environment (in 1.0.2
932 * bug fix: SHADOW accepts characters as string designators, as required
933 by the spec (thanks to Eric Marsden)
934 * bug fix: fixed GC safety issues when foreign functions are called with
935 non-base strings as arguments
936 * bug fix: more consistent error output for fatal-compiler-warnings, like
938 * bug fix: functions with proper names were showing up as NIL in
939 backtraces (reported by Edi Weitz, regression in 1.0.2)
941 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
942 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
943 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
944 produce more efficient code on the x86 if the compiler can determine
945 that (+ INDEX <constant>) does not require a bounds check and FOO
946 has an element type at least 8 bits wide.
947 * bug fix: references to undefined variables are handled the same way
948 in toplevel forms as in the normal compiler
949 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
951 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
952 (thanks to Jon Buller)
953 * improvement: faster compilation times for complex functions
954 * improvement: added readlink support to SB-POSIX (thanks to Richard
957 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
958 * improvement: experimental support for mach exception handling on
959 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
961 * improvement: support for GBK external format.
962 (thanks to Chun Tian (binghe))
963 * improvement: the debugger now displays variables that have been closed
964 over, in code compiled with (DEBUG 2) or higher
965 * improvement: support for executable cores on NetBSD (thanks to
967 * new feature: added a RESTART-FRAME debugger command
968 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
969 be used to provide an implementation for FILE-POSITION on Gray streams
970 (thanks to Eric Marsden)
971 * new feature: add syslog, openlog and closelog support to SB-POSIX
972 (thanks to Richard Kreuter)
973 * optimization: the function call overhead in code compiled with
974 a high DEBUG optimization setting is significantly
975 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
976 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
977 (thanks to Tony Martinez)
978 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
979 evaluated once (reported by Kevin Reid)
980 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
981 works again (thanks to Kilian Sprotte)
982 * bug fix: an error is signaled for tagbodies with duplicate tags
983 (thanks to Stephen Wilson)
984 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
985 * bug fix: Win32 port can now handle foreign code unwinding Lisp
986 stack frames from alien callbacks.
987 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
988 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
989 65k pages (thanks to David Woodhouse)
990 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
992 changes in sbcl-1.0.1 relative to sbcl-1.0:
993 * new platform: FreeBSD/x86-64, including support for threading.
994 * new feature: the compiler stores cross-referencing information
995 about function calls (who-calls), macroexpansion (who-macroexpands)
996 and special variables (who-binds, who-sets, who-references) for code
997 compiled with (< SPACE 3). This information is available through the
998 sb-introspect contrib.
999 * new feature: users may subclass SEQUENCE, and have instances of
1000 these classes interoperate with standard Common Lisp functions if
1001 a number of methods are defined. (This feature is experimental
1002 and the interface subject to change based on feedback from SBCL
1003 users and the general community)
1004 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1005 x86/x86-64, rather than the previous fixed depth of 8
1006 * improvement: another pthread back-end of mutex "pthread-futex".
1007 * bug fix: non-ascii command-line arguments are processed correctly
1008 (thanks to Yaroslav Kavenchuk)
1009 * bug fix: non-required arguments were not passed correctly when a method
1010 defined using DEFMETHOD was called from a mop-generated method using
1011 CALL-NEXT-METHOD (reported by Pascal Costanza)
1012 * bug fix: recursion is now permitted in accessors through
1013 SLOT-UNBOUND. (reported by Pascal Costanza)
1014 * bug fix: an error was signaled at startup if the HOME environment
1015 variable was defined, but had an empty value (reported by Peter Van Eynde)
1016 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1017 signal a PROGRAM-ERROR, not a BUG.
1018 * bug fix: SB-POSIX:READDIR works when built with large file support.
1019 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1021 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1022 for better automatic indentation support. (thanks to Matt Pillsbury)
1023 * optimization: loading generic functions no longer takes O(n^2) time,
1024 proportional to the amount of methods in the generic function
1025 (reported by Todd Sabin and Jeremy Brown)
1026 * optimization: the FIND and POSITION family of sequence functions
1027 are significantly faster on arrays whose element types have been
1029 * improvements to the Windows port:
1030 ** Intermittent heap corruption problems have been fixed. (thanks
1031 to Alastair Bridgewater)
1032 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1034 ** Lisp is able to unwind foreign exception frames from alien
1035 callbacks. (thanks to Alastair Bridgewater)
1037 changes in sbcl-1.0 relative to sbcl-0.9.18:
1038 * improvement: experimental support for threading on FreeBSD/x86.
1039 (thanks to NIIMI Satoshi)
1040 * improvement: runtime option --dynamic-space-size can be used
1041 to set the size of the dynamic space reserved on startup.
1042 * improvement: floating point modes in effect are now saved in
1043 core, and restored on startup.
1044 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1045 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1046 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1047 threads are not running after *SAVE-HOOKS* have run.
1048 * improvement: writes to CLOS instance slots are type-checked in code
1049 compiled with (SAFETY 3)
1050 * improvement: floating-point exception handling on FreeBSD (thanks to
1052 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1053 (thanks to Zach Beane)
1054 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1056 * improvement: added support for the Shift-JIS external format.
1057 (contributed by NIIMI Satoshi)
1058 * improvement: callbacks are supported on Linux/PPC. (thanks to
1060 * bug fix: compiler bug triggered by a (non-standard) VALUES
1061 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1062 * bug fix: file compiler no longer confuses validated and already
1063 dumped structurres. (reported by Kaersten Poeck)
1064 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1065 fill-pointer signals a type-error as required. (thanks to
1067 * bug fix: disassemly of funcallable instances works.
1068 * bug fix: single stepping on PPC.
1069 * bug fix: fix thread-safety problems in the type system (generally
1070 manifesting as nonsensical errors like "STRING is a bad type specifier
1071 for sequences" or "The value 1 is not of type FIXNUM")
1072 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1073 (reported by Josip Gracin)
1074 * bug fix: an error is signaled for attempts to displace arrays with
1075 incompatible element types (thanks to Mario Mommer)
1076 * bug fix: more correct handling of wide characters in debug info
1077 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1078 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1079 and don't cause extra consing
1080 * optimization: MAP and MAP-INTO are significantly faster on vectors
1081 whose elements types have been declared.
1082 * Improvements to SB-SPROF:
1083 ** Support for allocation profiling
1084 ** Reduced profiling overhead, especially for long profiling runs
1085 * Improvements to the Windows port:
1086 ** floating point exceptions are now reported correctly.
1087 ** stack exhaustion detection works partially.
1088 ** more accurate GET-INTERNAL-REAL-TIME.
1089 ** better RUN-PROGRAM behaviour in case of errors in the child
1091 ** PROBE-FILE now simplifies pathnames correctly.
1092 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1093 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1094 1st 1970 (although time timezone data will be unreliable).
1095 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1097 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1098 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1099 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1101 * bug fix: two potential GC deadlocks affecting threaded builds.
1102 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1103 returns T (reported by Anton Kazennikov)
1104 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1105 with non-variable places
1106 * bug fix: remove a race condition in the setting of
1107 funcallable-instance functions, this should make threaded CLOS
1108 code more stable against memory faults.
1109 * bug fix: corruption of specials when unbinding is interrupted by an
1110 asynchronous unwind (reported by Hannu Koivisto)
1111 * improvement: the debugger will now also display local variables that
1112 are only used once, for code compiled with a DEBUG optimization quality
1115 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1116 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1117 * incompatible change: External-format support for FFI calls. The
1118 SB-ALIEN:C-STRING no longer implies an ASCII
1119 external-format. Instead the string is subject to external-format
1120 conversion. Additionally return values of type SB-ALIEN:C-STRING
1121 are by default of type (SIMPLE-ARRAY CHARACTER), not
1122 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1123 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1124 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1125 * incompatible change: SB-EXT package no longer contains the
1126 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1127 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1129 * incompatible change: the single-stepper is no longer available
1130 on Alpha, Mips and Sparc platforms.
1131 * minor incompatible change: the direct superclasses of
1132 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1133 not (STANDARD-OBJECT FUNCTION). This makes the
1134 class-precedence-lists of GENERIC-FUNCTION and
1135 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1137 * minor incompatible change: the default stream external format on
1138 non-unicode SBCL is no longer detected from the locale, but is always
1140 * new feature: Add a version of evaluator that uses an interpreter instead
1141 of the compiler. EVAL still uses the compiler by default, to switch it
1142 to use the interpreter, set the value of the variable
1143 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1144 * minor incompatible change: the single-stepper REPL has been merged
1145 with the normal debugger (see the "Stepping" heading of the debugger help
1146 for more details). The debugger command STEP will no longer switch
1147 to the single-stepper REPL.
1148 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1149 for a type now works.
1150 * bug fix: loading of default sysinit file works. (thanks to Leonid
1152 * bug fix: better detection of circularities in the file-compiler.
1153 (reported by Marco Monteiro)
1154 * bug fix: the CL pathname functions now work with files that have
1155 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1156 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1157 systems with Unix98 pty semantics.
1158 * bug fix: ASDF-INSTALL will now work with bsd tar.
1159 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1161 * bug fix: timers expiring in dead threads no longer cause a
1162 type-error (reported by Paul "Nonny Mouse").
1163 * bug fix: thanks to more lightweight single-stepper instrumentation,
1164 code compiled with (DEBUG 3) will compile and execute significantly faster,
1165 and will have more accurate type-inferencing than before
1166 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1167 whose bindings are modified
1168 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1169 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1170 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1171 CL:SOFTWARE-VERSION with proper version
1173 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1174 * feature: implemented the READER-METHOD-CLASS and
1175 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1176 as specified by AMOP.
1177 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1179 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1180 (thanks to Lutz Euler)
1181 * optimization: hashing of general arrays and vectors has been
1182 improved. (reported by Any Fingerhut)
1183 * enhancement: SB-INTROSPECT is now able to find definitions of
1184 profiled functions. (thanks to Troels Henriksen)
1185 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1186 as well, allowing compiler-macros for SETF-functions to expand.
1187 * enhancement: step-instrumentation no longer wraps known
1188 single-value functions with multiple-value context, allowing
1189 better type inference.
1190 * fixed bug #337: use of MAKE-METHOD in method combination now works
1191 even in the presence of user-defined method classes. (reported by
1192 Bruno Haible and Pascal Costanza)
1193 * fixed bug #339(c): if there are applicable methods not part of any
1194 long-form method-combination group, call INVALID-METHOD-ERROR.
1195 (reported by Bruno Haible)
1196 * fixed bug #361: the :FUNCTION initarg in the protocol for
1197 initialization of methods can now be used to override
1198 internally-produced optimized functions. (reported by Bruno
1200 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1201 system-provided lambda expression no longer cause warnings about
1202 unbound #:|pv-table| symbols.
1203 * bug fix: improved the handling of type declarations and the
1204 detection of violations for keyword arguments with non-constant
1206 * bug fix: potentially erronous calls to PATHNAME and
1207 MERGE-PATHNAMES were being flushed in some cases.
1208 (reported by Richard Kreuter)
1209 * bug fix: compiled calls to TYPEP were mishandling obsolete
1210 instances. (reported by James Bielman and Attila Lendvai)
1211 * bug fix: format strings with ~> without matching ~< no longer
1212 trigger an AVER, but signal an understandable error instead.
1213 (reported by Antonio Martinez)
1214 * bug fix: specifying an output-file without a pathname-type for
1215 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1216 of input-file instead of "fasl". (reported by Robert Dodier)
1217 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1218 (reported by James Y Knight).
1219 * bug fix: compiler-macros-function did not consider the environment
1220 argument for shadowing by local functions.
1221 * bug fix: compiler-macros expansion was inhibited by local INLINE
1223 * bug fix: inline expansions of known functions were subject to
1224 step-instrumentation in high debug policies, leading to problems
1225 with type-inference.
1226 * bug fix: compiler failed to differentiate between different CONS
1227 types in some cases.
1228 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1229 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1230 * bug fix: #368: incorrect use of expressed vs. upgraded array
1232 * bug fix: #306a: more precise unions of array types.
1233 * thread-safety improvements:
1234 ** CONDITION-WAIT could return early on Linux, if the thread was
1235 interrupted and subsequently continued with SIGCONT.
1236 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1238 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1239 * added support for the ucs-2 external format. (contributed by Ivan
1241 * minor incompatible change: pretty printing of objects of type
1242 (cons symbol) is, in the default pprint-dispatch-table, now
1243 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1245 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1246 called later in a class's lifetime, possibly as late as when the
1247 first instance of the class is created. Previously,
1248 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1249 class became finalizeable.
1250 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1251 for multibyte external-format streams. (thanks to "vbzoli")
1252 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1253 with :ALLOCATION :CLASS inherited from superclasses of the
1255 * fixed bug: anonymous classes can now be created using the :NAME
1256 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1257 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1258 * fixed bug: core-files saved with :EXECUTABLE T can again be
1259 executed when SBCL_HOME isn't set. (reported by James Knight)
1260 * fixed bug: toplevel LOCALLY forms with declarations could
1261 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1262 * fixed bug: printing from several different threads using different
1263 values of *print-case* could cause invalid output, due to
1264 some internal special variables of the printer not being bound
1265 thread-locally (reported by Max Mikhanosha)
1266 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1267 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1268 (reported by Pascal Costanza)
1269 * fixed bug: FINALIZE-INHERITANCE is called from
1270 REINITIALIZE-INSTANCE on classes when the class has previously
1271 been finalized, as required by AMOP.
1272 * minor code generation optimizations:
1273 ** better register allocation in CLOS dispatching functions
1274 ** overflow detection when coercing signed bytes to fixnums on x86-64
1275 ** is now implemented with one IMUL instruction instead of three shifts
1276 ** more efficient bit-vector access on x86 and x86-64
1277 ** more efficient access to raw structure slots on x86 and x86-64
1278 * fixed some bugs revealed by Paul Dietz' test suite:
1279 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1280 return its argument.
1282 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1283 * feature: thread support on Solaris/x86, and experimental thread support
1285 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1287 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1288 default method for SLOT-UNBOUND.
1289 * minor incompatible change: prevent the user from specializing the
1290 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1291 somewhat counter to the intent of the protocol, I (CSR) think, and
1292 additionally it just doesn't work in SBCL as currently
1293 implemented, thanks to optimizations (that are always valid for
1294 the other three SLOT-VALUEish functions, but not for the setter).
1295 * minor incompatible change: the :SB-LDB feature is now enabled by
1296 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1297 the low-level debugger.
1298 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1299 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1300 down to an SB-SYS:FD-STREAM, allowing direct communication in
1301 more cases. Temporary files and pipes are still used as a fallback
1303 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1304 on the non-reentrant C functions localtime(3) and gmtime(3).
1305 * bug fix: global optimization policy was not visible in LOCALLY and
1307 * bug fix: class objects can be used as specializers in methods.
1308 (reported by Pascal Costanza)
1309 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1310 with a type error. (reported by blitz_ on #lisp)
1311 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1312 failed with a type error. (reported by Pascal Bourguignon)
1313 * bug fix: merging pathnames against defaults with :DIRECTORY
1314 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1315 (reported by James Y Knight)
1316 * bug fix: saving large (>2GB) cores on x86-64 now works
1317 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1318 constant index and a (simple-array (signed-byte 32)) array
1319 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1320 error (patch by Robert J. Macomber)
1321 * feature: TIME now displays the amount of run-time spent in GC
1322 * bug fix: The debugger now does a better job of respecting
1323 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1324 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1325 workaround for bug 403.)
1326 * bug fix: floating point exception handling now works on FreeBSD
1327 (thanks to NIIMI Satoshi)
1328 * fixed some bugs revealed by Paul Dietz' test suite:
1329 ** MISC.641: LET-conversion were not supposed to work in late
1331 * improvements to the Win32/x86 port:
1332 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1333 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1335 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1336 * new feature: source path information is generated for macro-expansion
1337 errors for use in IDE's like Slime (thanks to Helmut Eller)
1338 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1339 * bug fix: compiler does not loop forever on an invalid type in
1341 * improvement: compilation of most CLOS applications is significantly
1343 * optimization: added a limited bytecode compiler for simple toplevel
1344 forms, speeding up compilation and FASL loading
1345 * bug fix: the statistical profiler now properly distinguishes anonymous
1348 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1349 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1350 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1351 into subclasses of the finalized class. Now user calls to
1352 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1353 system return before any subclasses are finalized.
1354 * minor incompatible change: The reader no longer ignores errors
1355 regarding non-existent packages in #+ and #- feature tests.
1356 * new feature: command line options --no-sysinit, --no-userinit to
1357 inhibit loading the corresponding init files
1358 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1359 for sending data through UDP sockets (thanks to François-René Rideau)
1360 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1361 error is signalled instead (thanks to François-René Rideau)
1362 * minor incompatible change: Error signalling behaviour of lexical
1363 operations violating package locks has changed slightly. Refer to
1364 documentation on package locks for details.
1365 * enhancement: EVAL can process IF-expressions without resorting to the
1367 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1368 constant-folded properly due to missing out-of-line functions.
1369 (reported by Mika Pihlajamäki)
1370 * bug fix: LISTEN sometimes returned T even in cases where no data was
1371 immediately available from the stream
1372 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1373 were reversed. (reported by Levente Mészáros)
1374 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1375 when given a vector displaced to an adjustable array. (reported
1377 * bug fix: derivation of float boundaries from numbers outside the
1378 appropriate float range (reported by John Wiseman)
1379 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1381 * bug fix: precomputing cache entries for generic functions with
1382 some subclasses of specializers as yet invalid does not attempt to
1383 fill a cache line with a negative offset. (reported by Levente
1385 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1386 allow condition class objects as arguments to DOCUMENTATION and
1387 (SETF DOCUMENTATION); only find and set documentation for
1388 structure names for the STRUCTURE doc-type. (suggested by Gary
1390 * improvements to the Win32/x86 port:
1391 ** (user-homedir-pathname) and default initialization file
1392 locations now know about the user's "Documents and Settings"
1393 directory (thanks to Yaroslav Kavenchuk)
1394 ** run-program is implemented (thanks to Mike Thomas)
1395 ** sockets support (thanks to Timothy Ritchey)
1396 ** better backtrace support (thanks to Alastair Bridgewater)
1397 ** sb-grovel supported
1398 ** asdf-install and sb-posix work somewhat
1399 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1400 * improvements to the Solaris/x86 port:
1401 ** works on Solaris 11/Solaris Express
1402 ** floating-point exception handling support
1403 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1404 * fixed some bugs revealed by Paul Dietz' test suite:
1405 ** REMOVE-METHOD returns its generic function argument even when
1406 the method is not one of the generic functions' methods.
1407 ** objects declared as MEMBER types can be admissible arguments to
1408 structure accessors.
1409 ** printing characters should simply be printed by the FORMAT ~:C
1411 ** compiler failure when compiling functions with hairy constant
1412 defaults for optional parameters.
1413 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1414 function, which is already optimized.
1416 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1417 * new platform: experimental support for SBCL x86/Darwin, including
1418 MacOS X 10.4.5 on Intel.
1419 * new feature: Unicode character names are now known to the system
1420 (through CHAR-NAME and NAME-CHAR).
1421 * new feature: the filesystem location of SBCL's core file is
1422 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1423 * minor incompatible change: the contrib modules SB-POSIX and
1424 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1425 this change is to make it easier to distribute
1426 location-independent binaries.
1427 * bug fix: as implied by AMOP, standardized classes no longer have
1428 slots named by external symbols of public packages. (reported by
1430 * optimization: calling functions via constant symbols -- as in
1431 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1432 via the function object as in (FUNCALL #'FOO).
1433 * optimization: on x86 and x86-64, the calling convention for the
1434 case of dealing with an unknown number of values has been altered
1435 to be friendlier to the prediction heuristics implemented,
1436 particularly with reference to CALL and RET pairing. (thanks to
1437 Alastair Bridgewater)
1438 * optimization: on x86, the code for access to thread-local symbol
1439 values and binding/unbinding of thread-local symbols is smaller.
1440 (thanks to Alastair Bridgewater)
1441 * enhancement: CONSTANTP is now able to determine constantness of
1442 more complex forms, including calls to constant-foldable standardized
1443 functions and some special forms beyond QUOTE.
1444 * fixed bug: occasional GC crashes on Solaris/x86
1445 * optimization: x86-64 supports stack allocation of results of simple
1446 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1447 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1448 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1449 (thanks to James Knight)
1450 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1451 by the standard (thanks to Stephen Compall)
1453 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1454 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1455 be used for bundling the runtime and the core file into one
1456 executable binary. This feature is not currently supported on all SBCL
1457 platforms. (thanks to James Bielman and NIIMI Satoshi)
1458 * new feature: a generational or ephemeral garbage collector is now
1459 the default on the PowerPC platform (both Linux and Darwin). The
1460 old Cheney (stop and copy) collector is a build-time option.
1461 (thanks to Cyrus Harmon, after Raymond Toy)
1462 * minor incompatible change: the method by which SBCL finds its
1463 contributed modules has changed; it no longer relies on symbolic
1464 links from an $SBCL_HOME/systems directory, but searches directly
1465 in the subdirectories of $SBCL_HOME.
1466 * enhancement: the dynamic heap size on the Linux/PPC platform is
1467 markedly larger, even using the older Cheney garbage collector.
1468 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1469 certain complicated string types. (reported by Gary King)
1470 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1471 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1472 * fixed bug: DOCUMENTATION on structures no longer signals an
1473 error if no structure type of the right name exists. (reported by
1475 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1476 applicable non-standard primary or :AROUND method on
1477 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1478 no longer cause unbound variable errors. (reported by Kevin Reid)
1479 * fixed bug: metacircle resolution in cases where methods have slots
1480 added before the slots from STANDARD-METHOD. (reported by Jean
1482 * fixed bug: the Power PC assembly code for calling into lisp
1483 sometimes computed its return address wrongly (depending on the
1484 15th bit of the address, fixed at link time). This used to
1485 manifest itself in a segmentation violation while building PCL.
1486 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1487 many others over the years)
1488 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1489 the stack pointer (treated as a signed integer) is negative.
1490 (thanks to Peter van Eynde)
1492 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1493 * new platform: experimental support for the Windows operating
1494 system has been added. (thanks to Alastair Bridgewater)
1495 * fixed several bugs in and robustified the PPC FFI (including
1496 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1497 * bug fix: allow non-simple string symbol names (reported by Paul
1499 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1501 * bug fix: saving a core corrupted callbacks on x86/x86-64
1502 * bug fix: closed a loophole in metacircularity detection and
1503 grounding in the PCL implementation of CLOS.
1504 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1505 (reported by tomppa on #lisp)
1506 * bug fix: clear the direction flag on Lisp -> C transitions, as
1507 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1508 (reported by Andrej Grozin and Hendrik Maryns)
1509 * optimization: major improvements to GC efficiency on GENCGC platforms
1510 * optimization: faster implementation of EQUAL
1511 * optimization: emit more efficient opcodes for some common
1512 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1513 * optimization: several other minor code-generation improvements on x86-64
1514 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1516 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1517 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1518 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1519 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1520 by ANSI as a generic function, and for consistency (SETF
1521 GENERIC-FUNCTION-NAME) is treated likewise.
1522 * fixed bug #233.b: make constraint propagation notice when a variable
1523 value is changed after it is referenced but before it is used
1524 * fixed bug #296: no more arbitrary behaviour from filenames with
1525 odd characters as --load arguments. (reported by Adam Warner)
1526 * fixed bug #390: :CHARACTER-SET pathname components now work as
1527 expected. (reported by Tim Daly Jr)
1528 * fixed bug #391: complicated :TYPE intersections in slot
1529 definitions no longer cause an error in PCL internals.
1530 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1531 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1532 returning the number of octets which would be written to the
1533 file-stream. (thanks to Robert J. Macomber)
1534 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1535 arguments to the internal stream functions. (thanks to David
1537 * bug fix: stack exhaustion is now handled on the x86/SunOS
1538 platform. (thanks to Daisuke Homma)
1539 * bug fix: more accurate ROOM results on GENCGC platforms
1540 * optimization: improved type inference for arithmetic-for
1541 index variables in LOOP
1542 * optimization: faster floating-point SQRT on x86-64
1543 * fixed some bugs revealed by Paul Dietz' test suite:
1544 ** DOCUMENTATION returns NIL instead of "" for method combinations
1545 that don't have a docstring
1547 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1548 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1549 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1550 therefore are not customizeable by user code (as seems to be at
1551 least permitted and maybe required by AMOP). As a consolation,
1552 however, the SBCL implementation of these functions now calls
1553 REINITIALIZE-INSTANCE as specified by AMOP.
1554 * bug fix: slot-definition documentation is propagated as per ANSI
1555 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1556 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1557 argument, as do eslotd initialization methods. (from Pascal
1558 Costanza's "Closer" project)
1559 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1560 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1562 * bug fix: it is now possible to have more than one subclass of
1563 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1564 (reported by Bruno Haible, Pascal Costanza and others)
1565 * bug fix: the dependent update protocol now works for generic
1566 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1567 and Pascal Costanza)
1568 * bug fix: condition-class instances corresponding to
1569 DEFINE-CONDITION forms are now created eagerly. (reported by
1570 Kalle Olavi Niemitalo on comp.lang.lisp)
1571 * bug fix: floating point printing is more accurate in some
1572 circumstances. (thanks to Simon Alexander)
1573 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1574 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1575 * bug fix: callbacks on OS X now preserve stack-alignment.
1576 (thanks to Cyrus Harmon)
1577 * enhancement: the x86-64 disassembler is much better at
1578 disassembling SSE instructions. (thanks to Lutz Euler)
1579 * enhancement: CHECK-TYPE on a variable now allows type-inference
1580 (thanks to Vincent Arkesteijn)
1581 * optimization: improved performance of EUC-JP external format.
1582 (thanks to NIIMI Satoshi)
1583 * optimization: performance improvements to IO on file streams of
1584 :ELEMENT-TYPE CHARACTER
1585 * optimization: much faster memory allocation on x86-64
1586 * optimization: faster garbage collections (latency and throughput)
1588 * optimization: faster bignum subtraction and division on x86 and x86-64
1589 (thanks to Lutz Euler)
1590 * optimization: more accurate type-inference for loops that use a
1591 floating point index variable or a negative step.
1593 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1594 * bug fix: add a workaround to SBCL looping infinitely at startup on
1595 Linux kernels with apparently buggy implementations of personality().
1596 (thanks to Svein Ove Aas)
1597 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1598 (thanks to David Lichteblau)
1599 * bug fix: local bindings shadow global symbol macros for
1600 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1601 * optimization: non-open coded uses of numeric comparison operators
1602 (e.g. >) no longer cons when called with more than one parameter
1603 on platforms supporting dynamic-extent allocation.
1604 * enhancement: saving cores with foreign code loaded is now supported
1605 on MIPS/Linux in addition to the previously supported platforms.
1606 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1607 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1608 * bug fix: division by zero in sb-sprof when no samples were collected
1609 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1610 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1611 (thanks to Alexander Kjeldaas)
1612 * new feature: ignoring the return values of destructive functions
1613 like NREVERSE signals a compile-time style-warning.
1614 (thanks to Kevin Reid)
1615 * new feature: the alignment of alien structure fields can be
1616 explicitly specified. (thanks to Cyrus Harmon)
1617 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1618 and dump core on SIGQUIT
1620 ** incompatible change: threads do not inherit values of specials
1621 from their parents (see manual)
1622 ** bug fix: threads stacks belonging to dead threads are freed by the
1623 next exiting thread, no need to gc to collect thread stacks anymore
1624 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1625 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1626 ** bug fix: dynamic variable and thread start related gc lossage
1627 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1629 * fixed some bugs revealed by Paul Dietz' test suite:
1630 ** SUBTYPEP is slightly more accurate on heinously complicated
1631 CONS types where some of the members have uncertain (in the
1632 NIL, NIL sense) type relationships to each other.
1634 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1635 no longer purified unless :PURIFY T is explicitly specified.
1636 ** Non-purified cores are significantly smaller than before
1638 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1639 * new feature: timers based on Zach Beane's excellent timer package
1640 * added support for the following external formats: koi8-u,
1641 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1642 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1643 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1644 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1645 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1646 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1647 * incompatible change: a threaded SBCL will no longer revert to
1648 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1649 * bug fix: interrupts are disabled until startup is complete; no
1650 more sigsegvs when receiving a signal to soon
1651 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1653 * bug fix: add a workaround for the memory randomization features in
1654 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1655 workaround will only be in effect on systems with the proc filesystem
1657 * bug fix: printing objects of type HASH-TABLE signals a
1658 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1660 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1661 have been running for over 50 days. (reported by Gilbert Baumann)
1662 * bug fix: the logic for getting names of functions gets less
1663 confused when confronded with alternate-metaclass
1664 funcallable-instances. (reported by Cyrus Harmon)
1665 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1666 consistent, even on internal alternate-metaclass objects.
1667 * bug fix: flush closure information collected by physical
1668 environment analysis prepass before the main pass. (bug reported
1670 * bug fix: compiler pack phase does not modify a hashtable, which is
1671 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1672 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1673 may be expanded. (reported by Alexander <malishev> on c.l.l)
1674 * bug fix: no more style-warnings when compiling code using LAST
1675 under high-SPEED low-SPACE settings. (reported by David Wallin
1677 * fixed some incompatibilities between SBCL's MOP and the MOP
1679 ** the METAOBJECT class is now implemented;
1680 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1681 STANDARD-OBJECT, as required;
1682 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1683 now compatible (as required by VALIDATE-SUPERCLASS); there
1684 remains a consistency requirement over the presence or absence
1685 of the FUNCTION class in the superclass list of finalized
1686 classes; see the manual for more details;
1687 ** the :AROUND method for COMPUTE-SLOTS on
1688 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1689 requested slot ordering.
1691 ** bug fix: parent thread now can be gc'ed even with a live
1693 ** bug fix: binding a special with PROGV to no value is not
1694 the same as that symbol not having been bound (thanks to
1696 ** bug fix: binding specials is thread safe (thanks to
1698 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1699 and SB-SPROF do not die with 'no handler for signal XX in
1700 interrupt_handle_now(..)' anymore
1701 ** bug fix: WITH-TIMEOUT works with multiple running threads
1702 * fixed some bugs revealed by Paul Dietz' test suite:
1703 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1704 the :method-class keyword argument.
1706 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1707 * new port: the Solaris operating system on x86 processors is now
1708 mostly supported, though some rough edges in the environment
1709 remain. (thanks to Daisuke Homma)
1710 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1711 space for its heap. (thanks to Thiemo Seufer)
1712 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1713 closures. (thanks to Thiemo Seufer)
1714 * minor incompatible change: eof selects abort in the debugger.
1715 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1716 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1718 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1719 deprecated, and will go away in a future revision of SBCL.
1720 * minor incompatible change: GC-ON and GC-OFF are no longer
1721 implemented with a counter, it does not matter how many times gc
1722 is switched on or off
1723 * bug fix: discriminating functions for generic function classes
1724 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1725 make invalid assumptions about method precedence order. (reported
1727 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1728 platforms. (thanks to Thiemo Seufer)
1729 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1730 * bug fix: correct pathname printing with printer escaping is on.
1731 (thanks to Kevin Reid)
1732 * bug fix: complex VOP definitions in "user-space" no longer trigger
1733 package locks. (reported by Zach Beane)
1734 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1735 for funcallable-instance functions, and is no different from
1737 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1738 characters in the current readtable. (reported by Nicholas Neuss)
1739 * bug fix: SUBTYPEP on various CONS types returns more a more
1740 accurate acknowledgment of its certainty.
1741 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1742 lists in some cases. This partially fixes bug 384.
1743 * flush all standard streams before prompting in the REPL and the
1745 * bug fix: signal handling and triggering gc do not conflict
1746 directly anymore, in particular a high frequency sb-sprof does
1747 not prevent gc from running
1748 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1749 approximation for timezone and DST information between the
1750 universal time epoch and the smallest negative 32-bit time_t.
1751 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1752 year 1899 so long as the encoded time is non-negative.
1753 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1754 the correct answer for non-constant rotate amounts when performing
1755 an inline 32-bit rotation.
1757 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1758 there is only one thread in the session
1759 ** bug fix: memory leak for streams created in one thread and
1760 written to in another
1761 ** bug fix: lockup when compiled with gcc4
1762 ** bug fix: race that allows the gc to be triggered when gc is
1764 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1765 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1767 ** bug fix: finished threads are gc'ed properly
1768 * fixed some bugs revealed by Paul Dietz' test suite:
1769 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1770 has arguments with a different set of applicable methods from
1771 the orignal arguments.
1772 ** The type error thrown by MAP now has a correct expected-type
1774 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1775 name a compiled function.
1776 ** Three MISC tests where a large bignum was improperly coerced to
1777 a float that couldn't represent that bignum during type
1778 derivation were fixed.
1779 ** SUBTYPEP can now handle types involving the negation of a
1780 list-form FUNCTION type.
1781 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1782 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1783 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1785 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1786 * New feature: Experimental support for bivalent streams: streams
1787 opened with :element-type :default now allow character and binary
1788 (unsigned-byte 8) I/O
1789 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1790 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1792 * bug fix: no more highly sporadic "couldn't check whether ~S is
1793 readable" when reading a stream and an interrupt hits in the middle
1794 of a select system call
1795 * compiler better recognizes complex arrays (reported by Eduardo
1797 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1798 for variables on SBCL built with linkage-tables. (reported by Luis
1800 * various error reporting improvements.
1801 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1802 (Thanks to Thiemo Seufer)
1803 * bug fix: nested reader invokations work correctly
1804 * bug fix: it is possible to have simultaneous references to foreign
1805 code and foreign data with the same name.
1807 ** added x86-64 support
1808 ** incompatible change: the threading api now works with thread
1809 objects instead of thread ids
1810 ** bug fix: threads are protected from signals and interruption when
1811 starting up or going down
1812 ** bug fix: a race where an exiting thread could lose its stack to gc
1813 ** bug fix: don't halt on infinite error in threads if possible
1814 ** fixed numerous gc deadlocks introduced in the pthread merge
1815 ** bug fix: fixed thread safety issues in read and print
1816 ** bug fix: debugger doesn't hang on session lock if interrupted at
1817 an inappropriate moment
1818 ** bug fix: run-program is now thread safe(r)
1819 ** bug fix: inner with-recursive-lock no longer releases the mutex
1820 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1821 * fixed some bugs revealed by Paul Dietz' test suite:
1822 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1823 EXPECTED-TYPE slots filled.
1824 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1826 ** MAKE-CONDITION accepts classes as type-designators.
1827 ** COMPILE may never return NIL.
1828 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1829 range before calling Unix time functions
1831 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1832 * numerous signal handling fixes to increase stability
1833 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1834 * minor incompatible change: we now correctly canonize default
1835 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1836 as per the MOP, rather than the historical (INITARG INITFUNCTION
1837 INITFORM). (reported by Bruno Haible)
1838 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1839 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1840 for more information.
1841 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1842 pathname is a directory pathname.
1843 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1844 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1846 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1847 :METACLASS argument in addition to a class name. (reported by
1848 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1849 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1850 (reported by Bruno Haible; patch from Gerd Moellmann)
1851 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1853 * bug fix: more cleanups to the floating point exception handling on
1854 x86-64 (thanks to James Knight)
1855 * bug fix: the compiler does not try to constant fold calls of
1856 COERCE and BIT-* functions when they return freshly constructed
1857 objects. (reported by Nikodemus Siivola and Paul Dietz)
1858 * optimization: improved the MIPS versions of generic (in the
1859 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1860 * optimization: direct conversion of (unsigned-byte 32) to floats on
1861 the PowerPC platform.
1862 * optimization: structure instances with raw slots now use less
1863 memory, and probably show better memory locality. (thanks to
1865 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1866 are treated as requests for stack allocation on the x86-64,
1867 Alpha-32, PPC and SPARC platforms.
1868 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1869 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1870 (thanks to Tony Martinez)
1872 ** gcing a dead thread can no longer lead to lockups
1873 ** threads block signals until they are set up properly
1874 ** errno is no longer shared by threads
1875 ** interrupt-thread restores the eflags register on x86
1876 ** fixed some lockups due to gc/thread interaction
1877 * fixed some bugs revealed by Paul Dietz' test suite:
1878 ** invalid dotted lists no longer raise a read error when
1879 *READ-SUPPRESS* is T
1880 ** signal an error if a symbol that names a declaration is used
1881 as the name of a type, or vice versa
1882 ** allow using the (declare (typespec var*)) abbreviation for
1883 (declare (type typespec var*)) with all type specifiers
1884 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1885 ** always return NIL from PPRINT-POP when OBJECT is NIL
1886 ** don't signal errors when pretty-printing malformed LABELS,
1887 FLET or MACROLET forms
1888 ** declarations in a DOLIST body are also in scope for the
1890 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1892 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1895 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1896 * fixed cross-compiler leakages that prevented building a 32-bit
1897 target with a 64-bit host compiler.
1898 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1899 opened with :IF-EXISTS :OVERWRITE.
1900 * fixed bug 281: error for an invalid qualifier in a short-form method
1901 combination method is not signalled until the faulty method is called.
1902 * bug fix: iteration variable type inferrer failed to deal with open
1903 intervals. (reported by Alan Shields)
1904 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1905 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1906 or more runtime options were provided to the sbcl binary.
1907 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1908 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1909 * optimization: there's now a fast-path for fixnum arguments in the
1910 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1911 * optimization: the code generated on x86-64 is more compact thanks
1912 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1913 * bug fix: floating-point exception handling now partly works on
1914 x86-64. (Thanks to James Knight)
1915 * improvement to the MIPS backend from Thiemo Seufer: C-style
1916 64-bit long long arguments and return values to alien functions
1918 * fixed some bugs revealed by Paul Dietz' test suite:
1919 ** the type-error signalled from WARN has a filled-in DATUM slot.
1920 ** the type-error required when a stream is not associated with
1921 a file has the stream as its datum.
1922 ** type-errors on single-floats on x86-64 no longer have
1923 :INVALID-OBJECT as the datum
1924 ** the type-errors signalled for invalid function names now have
1925 a correct expected type
1926 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1927 for structures defined with a :TYPE. Documentation strings for
1928 typed structures are no longer immediately discarded
1929 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1930 broadcast streams and synonym streams. FILE-LENGTH now also works
1931 on broadcast streams.
1933 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1934 * incompatible change: the --noprogrammer option, deprecated since
1935 version 0.7.5, has been removed. Please use the equivalent
1936 --disable-debugger option instead.
1937 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1939 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1940 inoperational for a while now) has been completely removed.
1941 * null lexical environments are now printed as #<NULL-LEXENV>,
1942 significantly reducing the amount of clutter in typical backtraces.
1943 * documentation on weak pointers, finalization, and after GC hooks
1944 has been added to the manual.
1945 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1946 as other specialized array types, is much faster. SUBSEQ and
1947 COPY-SEQ on such arrays have also been sped up.
1948 * optimization: EQL is now more efficient when at least other argument
1949 is known to be of type (OR FIXNUM (NOT NUMBER)).
1950 * fixed bug: the runtime is now less vulnerable to changes in the
1951 size of the SBCL object on OS X, and virtual memory is reserved for
1952 all spaces that need to be at a fixed address.
1953 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1954 * fixed bug: finalizers and after GC hooks that cause consing are now
1956 * fixed bug: compiler error messages and summaries are now printed to
1957 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1958 * fixed inference of the upper bound of an iteration variable.
1959 (reported by Rajat Datta).
1960 * fixed bug 211e: calling local functions with duplicated constant
1961 keyword argument no longer causes a bogus style warning about an
1963 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1964 ftype declaration to be disregarded. (reported by Dave Roberts)
1965 * fixed bug 373: caused by erronous compilation of references to alien
1966 variables in the runtime on ppc/darwin.
1967 * fixed bug 376: CONJUGATE type deriver.
1968 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1969 (reported by Baughn on #lisp)
1970 * a cross-compiler bug on non-x86 platforms has been identified and
1971 fixed. (thanks to Bruno Haible)
1972 * improvements to the MIPS runtime code for increased stability.
1973 (thanks to Thiemo Seufer)
1974 * increased the maximimum compact environment size to allow
1975 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1976 * partial workaround for bug 135: don't name the function we're
1977 calling for hairy cases of EVAL, so as not to accumulate one environment
1978 entry per call to EVAL. (reported by Kevin Reid)
1979 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1980 * optimization: type testing for non-vector arrays should be faster.
1981 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1983 * bug fix: setting 31st element of a bit vector to zero did not work
1985 * bug fix: redefining a class definition which failed due to a
1986 previous accessor / function clash now works (but see BUGS entry
1987 #380 for more problems in this area). (thanks to Zach Beane)
1988 * the long form of DEFINE-METHOD-COMBINATION disables method group
1989 checking when given a single method group with pattern *. (thanks
1991 * on x86 compiler supports stack allocation of results of simple
1992 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1993 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1994 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1995 * fixed some bugs related to Unicode integration:
1996 ** the restarts for recovering from input and output encoding
1997 errors only appear when there is in fact such an error to
1999 * fixed some bugs revealed by Paul Dietz' test suite:
2000 ** MISC.549 and similar: late transformation of unsafe type
2001 assertions into derived types caused unexpected code
2003 ** SCALE-FLOAT type deriver is less wrong.
2004 ** type derivers for EXP, LOG and similar functions compute result
2005 types for complex arguments better.
2006 ** (MISC.563) CONJUGATE type deriver works for very restricted
2008 ** out-of-line type testers for character strings are available.
2009 ** EQUAL compiler transform understands specialness of objects
2011 ** accessing double-floats stored on the stack now works on x86-64.
2012 ** debugger internals could sometimes create invalid lispobjs,
2013 resulting in GC crashes.
2014 ** MISC.548: type check weakening can convert required type into
2016 ** initialization forms for bindings are not in scope of free special
2019 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2020 * incompatible change: thread support for non-NPTL systems has
2021 been removed - locking is buggy and unreliable. A threaded
2022 SBCL build will now warn at startup and refuse to create
2023 new threads, unless futex support is detected in the kernel
2024 * incompatible change: the top level REPL now has only an ABORT
2025 restart associated with it, not TOPLEVEL and ABORT as it used to.
2026 TOP and TOPLEVEL are now available as debugger commands for
2027 returning to the top level.
2028 * incompatible change: forms evaluated in the REPL now use the
2029 global optimization policy.
2030 * incompatible change: user- and system-initialization files are
2031 no longer processed with LOAD, but by READ and EVAL; hence the
2032 global optimization policy, startup package, readtable, etc,
2034 * The .fasl file format number has been incremented because of
2035 various incompatible changes.
2036 * internal entry point details and argument counts no longer appear
2037 in backtraces unless explicitly requested by setting
2038 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2039 * built-in and standard functions no longer have names like "top
2040 level local call to FOO".
2041 * fixed bug 32: functions defined in non-null lexical environments
2042 now have more legible printed representation
2043 * fixed bug 33: functions defined in non-null lexical environemnts
2044 are now more amenable to inspection by INSPECT.
2045 * workaround for bug 354: XEPs no longer appear in backtraces unless
2046 explicitly requested.
2047 * fixed bug: receiving the signal which results from attempting to
2048 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2049 SIGBUS on other *BSDs) on architectures where the C stack is also
2050 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2051 to debugger confusion or wild instability. (reported by Cheuksan
2053 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2054 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2055 (reported by Lutz Euler)
2056 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2057 compiled code. (reported by Paul Dietz)
2058 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2059 specialized parameter to a method to something that is not TYPEP
2060 the specializer is now possible.
2061 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2062 face of package deletion.
2063 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2064 pathname. (reported by David Tolpin on c.l.l)
2065 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2066 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2067 STRING-STREAM and FILE-STREAM, respectively.
2068 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2069 than previously; in addition, its test suite is now run on build.
2070 (thanks to Luke Gorrie)
2071 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2072 * optimization: added a immediate representation for single-floats
2074 * fixed some bugs revealed by Paul Dietz' test suite:
2075 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2076 ** attempting to create a package with a colliding nickname causes
2077 correctable errors to be signalled.
2078 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2079 ** several x86-64 backend bugs related to sign-extension of immediate
2082 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2083 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2084 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2086 * fixed loading of multiply forward-referenced layouts.
2087 (thanks to Cheuksan Wang)
2088 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2089 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2090 (see COMPILE-FILE documentation for details of :PRINT option)
2091 * fixed bugs 19 and 317: fixed-format floating point printing is
2092 more accurate. This also fixes a bug reported by Adam Warner
2093 related to the ~@F format directive.
2094 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2096 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2097 dispatch table if the from-char is a dispatch macro character.
2098 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2099 by the wordsize no longer ignore the last word. (reported by Lutz
2101 * fixed bug in type checking of dynamic-extent variables. (reported
2103 * optimization: sequence traversal functions use their freedom to
2104 coerce function designators to functions.
2105 * optimization: code with many calls to CLOS methods specialized on
2106 CLOS classes has had redundant type checks removed.
2107 * optimization: added declarations to speed up operations that access
2108 the internal character database (for example STRING-UPCASE)
2109 * optimization: comparison operations between floats and sufficiently small
2110 fixnums no longer create extra rationals
2111 * fixed some bugs related to Unicode integration:
2112 ** portions of multibyte characters at the end of buffers for
2113 character-based file input are correctly transferred to the
2114 start of the buffer at the next read.
2115 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2116 passing it through to OPEN.
2117 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2118 argument given to internal calls to OPEN.
2119 ** the built-in comment readers (introduced by character sequences
2120 ";" and "#|") are more forgiving to encoding errors; they will
2121 STYLE-WARN and then attempt to resync the stream at a character
2122 boundary. (thanks to Teemu Kalvas)
2123 * fixed some bugs in the x86-64 port:
2124 ** Negative short int return values from c-calls are sign-extended
2126 ** The stack is aligned to 16-bytes for c-calls, as required by
2127 the ABI. (thanks to Cheuksan Wang)
2128 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2129 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2130 for enums. (thanks to Vincent Arkesteijn)
2131 ** Multiple small optimizations and bugfixes for floating point
2133 * fixed some bugs revealed by Paul Dietz' test suite:
2134 ** Space, Tab, Linefeed, Return and Page have the invalid
2135 secondary constituent character trait.
2136 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2138 ** WITH-INPUT-FROM-STRING should only update the index place on
2140 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2141 works more reliably.
2142 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2143 with one-dimensional arrays with fill pointers.
2144 ** TYPE-OF failed on a complex with an integer realpart and a
2146 ** compiler failure during type inference for the code of form
2147 (IF (EQL X (THE ...)) ...) (MISC.535).
2149 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2150 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2151 platform. The port supports 61-bit fixnums, large memory spaces
2152 and reloading shared object files.
2153 * enhancement: saving cores with foreign code loaded is now
2154 supported on ppc/Darwin in addition to the previously supported
2156 * enhancement: the statistical profiler now walks deeper into the
2157 call stack for more meaningful call-graphs and accrued time
2158 reports (x86/x86-64 only). It also now reports time spent in
2160 * enhancement: it is now possible to trace most individual methods
2161 of a generic function in addition to tracing the generic function
2163 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2165 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2166 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2167 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2168 produces an error. (thanks to Vincent Arkesteijn)
2169 * bug fix: NAMESTRING on pathnames with :WILD components in their
2170 directories works correctly. (thanks to Artem V. Andreev)
2171 * fixed bug 125: compiler preserves identity of closures. (reported
2173 * bug fixed: functions with &REST arguments sometimes failed with
2174 "Undefined function" when compiled with (DEBUG 3). (reported by
2176 * bug fix: overflow during compiling of setting element of a bit
2177 vector with constant index and value. (reported by Timmy Douglas)
2178 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2179 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2180 * on x86 compiler partially supports stack allocation of dynamic-extent
2182 * GO and RETURN-FROM do not check the extent of their exit points
2183 when compiled with SAFETY 0.
2184 * fixed some bugs related to Unicode integration:
2185 ** encoding and decoding errors are now much more robustly
2186 handled; it should now be possible to recover even from invalid
2187 input or output to the terminal. (thanks to Teemu Kalvas)
2188 ** provided a first cut at implementing STRING-TO-OCTETS and
2189 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2190 ** altered the SB-MD5 contributed module slightly, changing the
2191 interface just enough for it to be supportable for builds where
2192 lisp characters are not eight bits.
2193 * fixed some bugs revealed by Paul Dietz' test suite:
2194 ** the FORMATTER-generated functions for ~V[ conditionals require
2195 the correct number of arguments.
2196 ** READ-FROM-STRING returns the mandated second value when applied
2197 to displaced strings.
2198 ** the #\Rubout and #\Backspace characters are treated as invalid
2199 constituent characters by the tokenizer.
2201 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2202 * new feature: reloading changed shared object files with
2203 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2204 * new feature: references to foreign variables and functions
2205 can now be compiled and loaded before the corresponding shared
2206 object file is loaded, as long as the foreign definitions are
2207 available at runtime.
2208 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2209 supported. (thanks to Dan Debertin)
2210 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2211 just keywords. (thanks to Vincent Arkesteijn)
2212 * fixed bug #331: structure-class instances corresponding to
2213 DEFSTRUCT forms are now created eagerly.
2214 * fixed bug #345: backtraces from calls to undefined functions work
2215 on x86 as well. Related bug #61 is now also partially fixed on x86
2216 (backtraces from throws to unknown catch tags.)
2217 * bug fix: lambda-list parsing is now stricter vrt. order and number
2218 of lambda-list keywords.
2219 * bug fix: as specified by AMOP, an error is signalled if a
2220 class-option appears multiple times in a DEFCLASS form. (reported
2222 * bug fix: RANDOM can be compiled when the compiler derives the type
2223 of its numeric argument as a disjoint set of small integers.
2224 (reported by Paul Dietz)
2225 * bug fix: starting a core saved with shared objects loaded when
2226 those objects are not available no longer causes threaded SBCL to
2227 hang. (reported by Sean Ross)
2228 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2230 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2231 argument, which must always be NIL. (reported by Kalle Niemitalo)
2232 * bug fix: printing 1.0d+23 no longer results in an error.
2233 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2234 * bug fix: structure slot setters preserve evaluation order. (thanks
2236 * fixed some bugs related to Unicode integration:
2237 ** RUN-PROGRAM can allow its child to take input from a Lisp
2238 stream. (reported by Stefan Scholl)
2239 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2240 locales. (reported by Ken Causey)
2241 * fixed some bugs revealed by Paul Dietz' test suite:
2242 ** INCF, DECF and REMF evaluate their place form as specified in
2244 ** FORMATTER expands ~{ ~} iteration directives with V or #
2245 parameters correctly.
2246 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2247 consequent uses no arguments correctly.
2248 ** the system has a partial understanding of the (COMPLEX RATIO)
2250 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2253 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2254 * new feature: a build-time option (controlled by the :SB-UNICODE
2255 keyword feature, enabled by default) for building the system with
2256 support for the entire 21-bit character space defined by the
2258 * new feature: the system now has rudimentary external-format
2259 support; the primary user-visible change at this time is that
2260 characters with the high bit set (such as lower-case-e-acute) will
2261 print correctly to a terminal in a UTF-8 environment.
2262 * minor incompatible change: BASE-CHAR no longer names a class;
2263 however, CHARACTER continues to do so, as required by ANSI.
2264 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2265 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2266 has been moved to the SB-EXT package (temporarily re-exported from
2268 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2269 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2271 * fixed bug #351: better error-handlind and reporting for malformed
2273 * fixed bug #350: bignum-printing is now more memory-efficient,
2274 allowing printing of very large bignums, eg. (expt 2 10000000).
2275 (reported by Bruno Haible)
2276 * fixed bug #302: better primitive-type selection for intersection
2278 * fixed bug #308: non-graphic characters now all have names, as
2279 required. (reported by Bruno Haible)
2280 * bug fix: redefining a class with different superclasses now correctly
2281 removes it from the direct-subclasses of its previous superclasses.
2282 (reported by David Morse)
2283 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2284 new value now works. (reported by Bruno Haible)
2285 * bug fix: correct canonicalization of multiple non-standard slot
2286 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2287 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2288 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2289 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2290 now exists, an signals an error.
2291 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2292 during macroexpansion for non-iteration variables as well. (reported
2293 by Bruno Haible for CMUCL)
2294 * bug fix: Cyclic structures and unprintable objects in compiler
2295 messages no longer cause errors. (reported by Bruno Haible)
2296 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2297 and READ-FROM-STRING all now return a primary value of NIL if
2298 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2299 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2300 (reported by Bruno Haible for CMUCL)
2301 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2302 do not designate a condition. (reported by Bruno Haible for
2304 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2305 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2306 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2307 permitting resolution in favour of any of the conflicting symbols.
2308 (reported by Bruno Haible for CMUCL)
2309 * bug fix: EQUAL compiler optimizations is less aggressive on
2310 strings which can potentially compare true despite having distinct
2311 specialized array element types.
2312 * bug fix: unit enumerations can be defined without dividing by
2313 zero. (thanks to Vincent Arkesteijn)
2314 * FORMAT compile-time argument count checking has been enhanced.
2315 (report from Bruno Haible for CMUCL)
2316 * a partial workaround for the bug 262: the compiler does not try to
2317 inline-expand a local function doing RETURN-FROM from a deleted
2318 BLOCK. (thanks to Peter Denno for the bug report and to David
2319 Wragg for the simple test case)
2320 * fixed some bugs revealed by Paul Dietz' test suite:
2321 ** RENAME-PACKAGE allows all package designators as new package
2323 ** constraint propagation and lambda variable substitution are
2324 more cautious in dealing with partially deleted code.
2325 ** compiler sometimes lost reoptimization passes.
2326 ** CERROR, given a condition as condition designator, passes its
2327 remaining arguments to the continue format control without
2329 ** Case-altering FORMAT directives work correctly on non-ASCII
2331 ** The REAL type specifier handles bounds outside the floating
2332 point ranges without signalling FLOATING-POINT-OVERFLOW.
2333 ** Functions with IR1-transformations can create intercomponent
2334 references to global functions.
2335 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2337 ** FORMAT ~R treats a nil value for its first parameter correctly.
2339 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2340 * enhancement: saving cores with foreign code loaded is now
2341 supported on x86/NetBSD and sparc/Linux in addition to the previously
2342 supported platforms.
2343 * bug fix: on some platforms repeated installations caused multiple
2344 copies of HTML documentation to be installed -- should not happen
2345 any more. (reported by Stefan Scholl)
2346 * bug fix: parsing self-recursive alien record types multiple times
2347 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2348 original patch by Helmut Eller for CMUCL)
2349 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2350 (thanks to Richard Kreuter)
2351 * bug fix: defining classes whose accessors are methods on existing
2352 generic functions in other (locked) packages no longer signals
2353 bogus package lock violations. (reported by François-René Rideau)
2354 * bug fix: special variables as DEFMETHOD parameters no longer have
2355 associated bogus type declarations. (reported by David Wragg and
2357 * bug fix: read-write consistency on streams of element-type
2358 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2359 * bug fix: redefiniton of the only method of a generic function with
2360 no DEFGENERIC no longer emits a full WARNING. In addition,
2361 redefinition of generic functions with no DEFGENERIC to an
2362 incompatible lambda list now signals an error. (thanks to Zach
2364 * bug fix: DEFGENERIC now works even when there's a function of the
2365 same name in an enclosing lexical environment. (thanks to Zach
2367 * fixed compiler failure, caused by instrumenting code during
2368 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2369 * optimization: added loop analysis and improved register allocation
2370 * fixed some bugs revealed by Paul Dietz' test suite:
2371 ** POSITION on displaced vectors with non-zero displacement
2372 returns the right answer.
2373 ** (SIMPLE-STRING) is a valid type specifier for sequence
2375 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2377 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2378 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2380 ** The justification version of the FORMAT ~< directive treats
2381 non-zero minpad parameter correctly.
2383 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2384 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2385 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2386 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2387 the supported interface.
2388 * new feature: Single-stepping of code compiled with DEBUG 2 or
2389 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2390 * new feature: saving cores with foreign code loaded is now
2391 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2392 Timothy Moore's work for CMUCL)
2393 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2394 parameters to * instead of NIL if no initform is supplied.
2395 (reported by Johan Bockgaard)
2396 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2397 correctly when FUNCALL appears as the car of the form. Note:
2398 despite this FUNCALL forms are not currently subject to
2399 compiler-macro expansion. (port of Raymond Toy's fix for the
2400 same from CMUCL, reported by Johan Bockgaard)
2401 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2402 (thanks for Teemu Kalvas)
2403 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2404 case instead of terminating the iteration (thanks for Julian
2405 Squires, Sean Champ and Raymond Toy)
2406 * bug fix: incorrect expansion of defgeneric that caused a style
2407 warning. (thanks for Zach Beane)
2408 * bug fix: slot accessor effective method computation works properly
2409 for classes with multiple non-standard applicable methods on
2410 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2411 * on x86 compiler supports stack allocation of results of LIST and
2412 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2413 CMUCL implementation by Gerd Moellmann)
2414 * fixed some bugs revealed by Paul Dietz' test suite:
2415 ** FORMAT strings with both the ~<~:;~> form of the justification
2416 directive and pretty-printing directives cause an error.
2418 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2419 * incompatible change: the internal functions
2420 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2421 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2422 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2423 instead of the old functions.
2424 * new feature: on platforms where "dladdr" is available foreign
2425 function names now appear in backtraces. (based on Helmut Eller's
2427 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2428 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2430 * documentation: ASDF manual is now distributed with SBCL.
2431 * bug fix: SBCL can now load its contributed modules with REQUIRE
2432 even if the system-provided entries have been removed from
2433 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2435 * bug fix: backtraces involving undefined functions or assembly
2436 routines are more informative. (thanks to Brian Downing)
2437 * bug fix: mutually referent alien structures now work correctly.
2438 (reported by Rick Taube)
2439 * bug fix: structures defined by WITH-ALIEN can be referred to
2440 within other definitions in the same WITH-ALIEN.
2441 * bug fix: division operators (MOD, TRUNCATE and the like) with
2442 constant zero divisors and integer dividends no longer generate
2444 * bug fix: provide default methods for INPUT-STREAM-P and
2445 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2446 * bug fix: improve the detection and resolution of MOP metacycles
2447 (where effective method computation depends on the generic function
2448 having its effective method computed). (reported by Bruno Haible)
2449 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2450 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2451 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2452 * bug fix: pathnames with relative directory components can be
2453 represented relative to default pathnames.
2454 * optimization: in taking the GCD of bignums, reduce the two bignums
2455 to approximately the same size (using Euclid's algorithm) before
2456 applying the more sophisticated binary GCD. (thanks to Juho
2458 * optimization: COUNT on bitvectors now operates word-at-a-time.
2459 * optimization: ASH with a positive, but not necessarily constant,
2460 (leftwards) shift, when in a modular context, is compiled to a
2462 * fixed some bugs revealed by Paul Dietz' test suite:
2463 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2464 if the corresponding argument is NIL.
2465 ** FORMAT directives accepting a minpad parameter treat negative
2467 ** literal commas as character parameters to FORMAT directives are
2469 ** literal spaces directly after ~<Newline> directives within a
2470 format-logical-block (~:< ~@:>) do not induce :FILL-style
2471 conditional newlines.
2472 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2473 as specified: it no longer includes conditional newlines).
2474 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2476 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2477 :PER-LINE-PREFIX argument does not evaluate to a string.
2479 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2480 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2481 the manual for details; for now, package locks can be disabled by
2482 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2483 if no major problems are found then it is likely that they will be
2484 compiled in unconditionally.
2485 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2486 unsupported operators on all platforms. To load a shared library
2487 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2488 object file, link it into a shared library outside of SBCL and
2489 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2491 * bug workaround: ROOM T and the GC were not working together
2492 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2493 reporting facility aren't preserved. That reporting has been
2494 disabled, so now until and unless someone figures out how to make it
2495 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2496 * minor incompatible change: as threatened around sbcl-0.8.0, the
2497 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2498 The symbols are also exported from SB-PCL for backwards
2499 compatibility, but more so than before SB-PCL should be treated as
2500 an implementation-internal package.
2501 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2503 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2504 It is known as of this release not to work on the Alpha, however.
2505 * fixed bug #167: errors signalled due to illegal syntax in method
2506 bodies are now more legible.
2507 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2508 designators and can hence be used with TYPEP.
2509 * fixed bug #333: CHECK-TYPE now ensures that the type error
2510 signalled, if any, has the right object to be accessed by
2511 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2512 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2513 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2515 * fixed bug #334: programmatic addition of slots using specialized
2516 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2517 and :ALLOCATION :CLASS slots.
2518 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2519 float exponents. (rereported by Peter Seibel)
2520 * fixed a bug: #\Space (and other whitespace characters) are no
2521 longer considered to be macro characters in standard syntax by
2522 GET-MACRO-CHARACTER.
2523 * fixed bug: initialization of condition class metaobjects no longer
2524 causes an instance of the condition to be created. (reported by
2526 * fixed bug: it is now possible to have slots such that
2527 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2528 description is neither :INSTANCE nor :CLASS.
2529 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2530 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2531 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2532 non-standard SLOT-DEFINITION-ALLOCATION values.
2533 * fixed bugs: various race conditions handling exiting threads.
2534 CL-PPCRE's thread torture test now passes.
2535 * fixed arguably-a-bug: GC time proportional to number of threads in
2536 system even when most of them are idle
2537 * optimization: improved performance of BIT and SBIT on bit-vectors.
2538 * .fasl file incompatibility: The fasl file version number has
2539 been incremented because of changes associated with package locks.
2541 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2542 * minor incompatible change: the system no longer provides
2543 optimization hints (conditions which are TYPEP
2544 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2545 mode; these hints are still emitted when higher SPEED optimization
2547 * new contrib module: a sampling profiler (profiling by statistical
2548 sampling, rather than by instrumenting functions) is available as
2549 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2550 * the behaviour of the standard function ED is now customizeable by
2551 third parties through a hook variable: see ED's documentation
2552 string for information on the protocol.
2553 * the compiler no longer emits efficiency notes for (FUNCALL X)
2554 when the type of X is uncertain under default optimization
2556 * fixed bug 276: mutating a binding of a specialized parameter to a
2557 method to something that is not TYPEP the specializer is now
2559 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2560 exhibit the required behaviour on the x86 platform. (thanks to
2561 Peter van Eynde, Eric Marsden and Bruno Haible)
2562 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2563 even for difficult arguments. (reported by Peter Graves)
2564 * fixed bug 141a: the backquote printer now descends quoted
2566 * fixed another bug in backquote printing: no more destructive
2567 modification of the form's list structure. (reported by Brian
2569 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2570 move between its address being taken and the call to
2571 interrupt_thread, fixing a crashing race condition.
2572 * the SB-POSIX contrib implementation has been adjusted so that it
2573 no longer exhibits ridiculously poor performance when constructing
2574 instances corresponding to C structs.
2576 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2577 * minor incompatible change: the sb-grovel contrib now treats C
2578 structures as alien (in the sense of SB-ALIEN) objects rather than
2579 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2580 has implications for memory management of client code
2581 (sb-grovel-returned objects must now be manually managed) and for
2582 type safety (alien objects now have full types).
2583 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2584 used to control emission of compiler diagnostics, rather than the
2585 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2586 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2587 quality should be considered deprecated.
2588 * install.sh now installs the user manual as well
2589 * (not quite a new documentable feature, but worth considering in
2590 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2591 beginnings of a semantically meaningful condition hierarchy is
2592 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2594 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2595 designator as the defaults argument.
2596 * fixed bug: Displaced arrays whose displaced-to array has become
2597 too small now cause ARRAY-DIMENSION to signal an error, providing
2598 for safer bounds-checking. (reported by Bruno Haible)
2599 * fixed bug: DEFCLASS slot definitions with identical :READER and
2600 :WRITER names now signal a reasonable error. (reported by Thomas
2602 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2604 * fixed bug: Invalid slot specification errors now print correctly.
2605 (thanks to Zach Beane)
2606 * fixed bug 320: Shared to local slot value transfers in class
2607 redefinitions now happen corrently from superclasses as
2608 well. (reported by Bruno Haible)
2609 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2611 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2612 improper lists correctly. (reported by Bruno Haible)
2613 * fixed bug 313: source-transform for <fun-name> was erroneously
2614 applied to a call of a value of a variable with name <fun-name>.
2615 (reported by Antonio Menezes Leitao)
2616 * fixed bug 307: The obsolete instance protocol ensures that
2617 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2618 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2619 remove dead unknown-values globs from the middle of the stack.
2620 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2621 easier to resume long computations after using *BREAK-ON-SIGNALS*
2622 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2623 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2624 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2625 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2626 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2627 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2629 * fixed a (fairly theoretical) bug in string printing: if
2630 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2631 does not have array-element-type equal to the most general string
2633 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2634 function name. (thanks to Nikodemus Siivola)
2635 * fixed bug: compile-time format string checker failed on
2636 non-closed ~{. (reported by Thomas F Burdick)
2637 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2638 don't warn on legal loop code involving more than one aggregate
2639 boolean. (thanks to Nikodemus Siivola)
2640 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2641 in keyword position to MAKE-PACKAGE was not being reported as
2643 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2644 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2646 * fixed bugs 280 and 312: the checking for multiple definitions in a
2647 file is less likely to become confused by uses of inline
2649 * fixed bug: the #S reader macro performs the keyword coercion
2650 specified for slot names. (reported by Kalle Niemitalo)
2651 * fixed bug: lambda lists may contain symbols whose names start with
2652 & but are not lambda-list-keywords; their occurrence triggers a
2654 * fixed bug 321: define-method-combination argument lambda lists do
2655 not cause invalid code to be generated when &optional or &aux
2656 variables have default values. (reported by Bruno Haible)
2657 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2658 have CLOS classes; this appears also to have fixed reported
2659 instability in stack exhaustion detection.
2660 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2661 MUFFLE-WARNING when no associated restart is present is now
2663 * optimization: rearranged the expansion of various defining macros
2664 so that each expands into only one top-level form in a
2665 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2667 * optimization: used a previously little-used slot in symbols to
2668 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2670 * fixed some bugs revealed by Paul Dietz' test suite:
2671 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2673 ** Fixed an optimization bug related to inheritance of initforms
2674 from local to shared slots.
2675 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2676 ** CAST optimizer forgot to flush argument derived type.
2677 ** print/read consistency on floats is now orders of magnitude
2678 more likely. (thanks also to Bruno Haible for a similar report
2680 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2681 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2682 for objects of type REAL. Make it so.
2683 ** SXHASH is specified (infelicitously) to respect similarity,
2684 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2685 it so. (thanks to Markus Ziegler)
2686 ** on the Alpha, the compiler succeeds in compiling functions
2687 returning a known number of arguments greater than 63.
2688 ** fixed handling of invalid NIL arguments in keyword position
2690 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2692 ** provided a readably-printable representation for RANDOM-STATE
2694 ** ensured that pathnames, where they have a namestring, always
2695 print using #P"..." syntax.
2697 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2698 * Support for the forthcoming 2.0 version of the NetBSD kernel
2699 running on x86 hardware has been added. (thanks to Perry
2700 E. Metzger most immediately, and others for their past work)
2701 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2702 current release version; SBCL's OpenBSD support had been broken
2703 since about the time of OpenBSD's switch to ELF binary format.)
2704 * [placeholder for DX summary]
2705 ** user code with &REST lists declared dynamic-extent, under high
2706 speed or space and low safety and debug optimization policy.
2707 * The manual has been converted to Texinfo format and the debugger
2708 chapter from the cmucl manual has been added.
2709 * A facility has been added to extract documentation strings from
2710 sbcl and store them as Texinfo-formatted snippets for inclusion in
2711 the manual (via Texinfo's @include directive)
2712 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2713 the test case to Dave Roberts)
2714 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2715 pointers. (reported by Sean Ross)
2716 * bug fix: PROFILE output is printed nicely even for large numerical
2717 values. (thanks to Zach Beane)
2718 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2719 greater than 32 handle EOF correctly.
2720 * bug fix: on X86 an immediate argument of the IMUL instruction is
2721 correctly printed in disassembly. (thanks to Lutz Euler)
2722 * bug fix: class slots in redefined classes preserve their old
2723 values. (thanks to Bruno Haible and Nikodemus Siivola)
2724 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2725 succeeds. (reported by Marco Baringer)
2726 * fixed some bugs revealed by Paul Dietz' test suite:
2727 ** READ-SEQUENCE now works on ECHO-STREAMs.
2728 ** RATIONALIZE works more according to its specification. (thanks
2731 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2732 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2733 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2734 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2735 should matter to you only if you rebind the printer control
2736 variables and then find you want different bindings in the
2737 debugger than in the ordinary execution of your program.)
2738 * The runtime build system has been tweaked to support building
2739 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2740 assembler and linker. (thanks to Nikodemus Siivola)
2741 * Unbound, undefined, undeclared variables now trigger full
2742 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2743 more often programmer error than deliberate exploitation of undefined
2745 * optimization: the hash algorithm for strings has changed to one
2746 that is less vulnerable to spurious collisions. (thanks to Juho
2748 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2749 needless bounds checking. (thanks to Juho Snellman)
2750 * optimization: implemented multiplication as a modular
2751 (UNSIGNED-BYTE 32) operation on the PPC backend.
2752 * fixed some bugs revealed by Paul Dietz' test suite:
2753 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2755 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2756 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2757 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2759 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2761 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2763 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2764 their output stream on EOF from read.
2765 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2766 have been read to end-of-file.
2767 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2769 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2770 description of determination of which consecutive characters
2772 ** Printing the "Space" character with escaping on now yields "#\\ ",
2773 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2774 ** Reading floating-point numbers with *READ-BASE* set to a number
2775 less than 10 works correctly.
2776 ** Reading floating-point numbers with *READ-BASE* set to a number
2777 more than 10 works correctly.
2778 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2779 the readtable currently in effect.
2781 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2782 * minor incompatible change: parsing of namestrings on a physical
2783 (Unix) host has changed; numbers after the final #\. in a
2784 namestring are no longer interpreted as a version field. This is
2785 intented to be largely invisible to the user, except that the
2786 meaning of the namestring "*.*.*" has changed: it now refers to a
2787 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2788 should usually be replaced by
2789 (make-pathname :name :wild :type :wild :version :wild)
2790 with the added benefit that this is more likely to be portable.
2791 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2792 option to OPEN now signals an error if the file being opened
2793 exists; this may have an impact on existing code.
2794 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2795 signals received, on the PowerPC platforms (both Linux and
2796 Darwin). (thanks to Pierre Mai for pointing out the location of
2798 * several fixes on OS X: The system now builds and runs cleanly on
2799 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2800 (thanks to Brian Mastenbrook)
2801 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2802 second-resolution: integer multiples of 1/3600 between -24 and 24.
2803 (thanks to Vincent Arkesteijn)
2804 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2805 type when called with 1 argument; PEEK-CHAR checked type of
2806 PEEK-TYPE only after having read first character from a
2807 stream. (reported by Peter Graves)
2808 * bug fix: the garbage collector now has much better locality
2809 behaviour, and in particular no longer treats all memory as being
2810 exhausted when many small objects point to each other in a deeply
2812 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2813 recognized as being TYPEP their class.
2814 * bug fix: the PUSHNEW documentation string has been corrected.
2815 (thanks to Vincent Arkesteijn)
2816 * bug fix: defaulting of the value for the last of an atypically
2817 large number of multiple values being bound was not being
2818 performed correctly on the Alpha or PPC platforms
2819 * optimization: implemented multiplication as a modular
2820 (UNSIGNED-BYTE 32) operation on the x86 backend.
2821 * optimization: SEARCH on simple-base-strings can now be open-coded.
2822 (see also contrib/compiler-extras.lisp for inspiration for
2823 teaching the compiler about the Boyer-Moore algorithm).
2824 * value, returned by MAX (and MIN) called with several EQUALP, but
2825 not EQL, arguments now does not depend on compiler settings.
2826 * fixed some bugs revealed by Paul Dietz' test suite:
2827 ** in stack analysis liveness information is propagated from
2828 non-local entry points.
2829 ** pathwise CAST removing failed when the CAST node did not start
2831 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2832 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2834 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2835 host is already defined.
2836 ** RENAME-FILE works on streams instead of signalling an internal
2838 ** PEEK-CHAR uses the current readtable when determining whether
2839 or not a character is whitespace.
2840 ** MERGE-PATHNAMES handles the case when the pathname does not
2841 specify a name while the default-pathname specifies a version.
2842 ** Pathnames now stand a better chance of respecting print/read
2844 ** Attempting to use standardized file system operators with a
2845 pathname with invalid :DIRECTORY components signals a
2847 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2849 ** DIRECTORY on logical pathnames is more correct.
2850 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2851 signal a TYPE-ERROR if their argument is not a stream.
2852 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2853 designator argument does not designate a stream.
2854 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2855 examining the synonym.
2856 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2858 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2859 element-type larger than ([UN]SIGNED-BYTE 32).
2861 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2862 * When built with the :SB-FUTEX feature, threaded builds now take
2863 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2864 for faster/more reliable mutex and condition variable support.
2865 * Incompatible change (but one you probably shouldn't have been using
2866 anyway): the interface and code for arbitrating between multiple
2867 threads in the same user session has been redesigned.
2868 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2869 error when called without an explicit environment argument.
2870 (thanks to Nikodemus Siivola)
2871 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2872 confused about their position. (thanks to Adam Warner and Gerd
2874 * bug fix: Pretty printing backquoted forms with unquotations in the
2875 argument list position of various code constructs such as LAMBDA
2876 now works correctly. (reported by Paul Dietz)
2877 * bug fix: Pretty printing unquotations no longer loses all
2878 stream position information.
2879 * optimization: performance of string output streams is now less
2880 poor for multiple small sequence writes.
2881 * optimization: performance of CSUBTYPEP in the presence of complex
2882 expressions involving CONS and NOT many times has been improved.
2883 (reported by Paul Dietz)
2884 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2886 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2887 streams for the REPL, for the debugger, and so on. (thanks to
2889 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2890 * fixed some bugs revealed by Paul Dietz' test suite:
2891 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2892 is ignored if it is too small, rather than propagating through
2893 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2894 ** extremely complex negations of CONS types were not being
2895 sufficiently canonicalized, leading to inconsistencies in
2897 ** VALUES tranformer lost derived type.
2899 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2900 * fixed a bootstrapping bug: the build process no longer assumes
2901 that the various BOOLE-related constants have the same value in
2902 host and target lisps. (noted by Paul Dietz' test suite on an
2903 SBCL binary built from CLISP)
2904 * The system can now be dynamically linked on the MIPS platform,
2905 which enables dynamic loading of foreign code from Lisp. (thanks
2906 to Ralf Baechle for discussions on the MIPS ABI)
2907 * The system now records debugging information for its own source
2908 files in a filesystem-position-independent manner, relative to
2909 the "SYS" logical host.
2910 * fixed a compiler bug: MV-LET convertion did not check references
2911 to the "max args" entry point. (reported by Brian Downing)
2912 * tweaked disassembly notes to be less confident about proclaiming
2913 some instruction as an LRA. (thanks to Brian Downing)
2914 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2915 now each have their own history, command character, and other
2916 characteristics. (thanks to David Lichteblau)
2917 * fixed some bugs revealed by Paul Dietz' test suite:
2918 ** compiler failure in compiling LOGAND expressions including a
2920 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2921 shift greater than 32.
2922 ** FLUSH-DEST did not mark blocks for type check regeneration.
2923 ** HANDLER-CASE failed to accept declarations in handler clauses
2924 in some circumstances.
2926 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2927 * New code in contrib/sb-introspect (still probably not entirely
2928 stable yet) provides some support for smart Lisp development
2929 environments like SLIME.
2930 * The conditions signalled for errors occurring when loading .fasl
2931 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2932 in a way which should help ASDF recover gracefully.
2933 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2934 stuff has been cleaned up. If you code contrib/ stuff, this might
2935 affect you, and you can look at contrib/README, contrib/STANDARDS,
2936 and/or the 0.8.4.27 diff to check.
2937 * In full calls the compiler now does not generate checks for declared
2938 argument types for all arguments.
2939 * various threading fixes
2940 ** and some experimental patches which didn't make it into
2941 the main tree for this release, but which are shipped in
2942 contrib/experimental-thread.patch as a possible fix for some
2943 failures (deadlock, spinning...) in GC-intensive multithreaded
2945 * fixed PPC build problem (source code incompatibility of different
2946 library versions): added offsetof() hackery which attempts to divine
2947 where glibc maintainers put uc_mcontext today
2948 * fixed bug 282: compiler does not trust type assertions while passing
2949 arguments to a full call.
2950 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2951 &OPTIONAL VALUES type parameter.
2952 * fix bug 214: algorithm for noting rejected templates is now more
2953 similar to that of template seletion. (also reported by rydis on
2955 * fixed bug 141b: printing backquoted information readably and prettily
2956 inserts a space where necessary.
2957 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2958 (CHARACTER 10) are now reported as errors, rather than propagated
2959 as unknown types. (reported by piso on #lisp)
2960 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2961 with values NIL and :ERROR. (thanks to Milan Zamazal)
2962 * fixed bug 191c: CLOS now does proper keyword argument checking as
2963 described in CLHS 7.6.5 and 7.6.5.1.
2964 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2965 longer raise an error; further, using a list as a for-as-arithmetic
2966 counter now raises a meaningful error.
2967 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2968 now understood by sequence creation functions such as MAKE-SEQUENCE
2970 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2971 a STRING-INPUT-STREAM.
2972 * compiler enhancement: SIGNUM is now better able to derive the type
2974 * type declarations inside WITH-SLOTS are checked. (reported by
2976 * fixed some bugs revealed by Paul Dietz' test suite:
2977 ** incorrect optimization of TRUNCATE for a positive first
2978 argument and negative second.
2979 ** compiler failure in let-convertion during flushing dead code.
2980 ** compiler failure while deriving type of TRUNCATE on an
2981 interval, containing 0.
2982 ** ASH of a negative bignum by a negative bignum count now returns
2984 ** intersection of CONS types now canonicalizes properly, fixing
2985 inconsistencies in SUBTYPEP.
2987 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2988 * incompatible change: The --disable-debugger command line
2989 option now clobbers the debugger at a more fundamental
2990 level, by redefining #'INVOKE-DEBUGGER instead of by
2991 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2992 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2993 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2994 enter the debugger REPL and then suffer recursive errors
2995 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2996 while under the new system, BREAK in --disable-debugger mode
2997 terminates the system just as an unhandled error would.
2998 * fixed compiler performance when processing loops with a step >1;
2999 * bug fix: DOCUMENTATION now retrieves generic function
3000 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3001 support has been systematized, and now supports the methods
3002 specified by ANSI, along with a default method and a method for
3003 slot documentation. (reported by Nathan Froyd)
3004 * bug fix: effective methods associated with a generic function are
3005 no longer cached over a change of that generic function's method
3006 combination. (reported by Andreas Fuchs)
3007 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3008 names a non-existent directory. (thanks to Andreas Fuchs)
3009 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3010 the PPC platform, lead to stack corruption; this has been fixed.
3011 (reported by Rainer Joswig)
3012 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3013 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3014 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3015 arithmetic in general, is now much more reliable on the PPC
3017 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3018 platform now returns the right answer.
3019 * optimization: restored some effective method precomputation in
3020 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3021 precomputation is now tunable.
3022 * optimization: compiler-internal data structure use has been
3023 reviewed, and changes have been made that should improve the
3024 performance of the compiler by about 20%.
3025 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3026 simple-base-strings and simple-bit-vectors is improved.
3027 * optimization: the optimization of 32-bit logical and arithmetic
3028 functions introduced in version 0.8.3 on the x86 has been
3029 implemented on the mips, ppc and sparc platforms; an
3030 implementation of the same facility, but for 64-bit arithmetic,
3031 has been added for the alpha.
3032 * microoptimization: the compiler is better able to make use of the
3033 x86 LEA instruction for multiplication by constants.
3034 * bug fix: in some situations compiler did not report usage of
3035 generic arithmetic in (SPEED 3) policy.
3036 * bug 145b fix: compiler used wrong type specifier while converting
3037 MEMBER-types to numeric.
3038 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3040 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3041 index argument now works properly on the Alpha platform.
3042 * bug fix: floating point exception treatment on the Alpha platform
3044 * bug fix: FILE-POSITION works much better on string input and
3045 output streams. (thanks to Nikodemus Siivola)
3046 * bug fix: many threading/garbage collection symptoms sorted.
3047 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3048 might be pseudo-atomic.
3049 * internal change: Stopping for GC is now done with signals not
3050 ptrace. GC is now done in whichever thread wanted it, instead of
3052 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3054 * bug fix: result form in DO is not contained in the implicit
3056 * incompatible change: ICR structure is changed; the value part of
3057 CONTINUATION is now called LVAR; corresponding functions are
3058 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3059 * added type deriver for ISQRT (thanks to Robert E. Brown).
3060 * bug fix: better support for loading from the command line when an
3061 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3063 * fixed some bugs revealed by Paul Dietz' test suite:
3064 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3065 ** ROUND and FROUND now give the right answer when given very
3066 small float arguments.
3067 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3069 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3070 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3071 ** LCM should return a non-negative integer.
3072 ** PARSE-INTEGER returned the index of a terminator instead of the
3073 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3074 ** PARSE-INTEGER returned an incorrect index being applied to a
3076 ** LCM with two arguments of 0 returns 0 rather than signalling
3078 ** unsigned addition of a 32-bit constant with the high bit set no
3079 longer causes an internal compiler error on the x86.
3080 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3081 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3082 with negative last argument.
3083 ** byte specifiers with zero size and position no longer cause
3084 an error during type derivation.
3085 ** bignum multiplication on the Alpha platform now returns the
3087 * porting: The system now builds on SuSE AMD64, although it still
3088 generates a 32-bit binary.
3089 * .fasl file incompatibility: The fasl file version number has
3090 been incremented (because of the changes to internal compiler
3091 data structures referred to above).
3093 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3094 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3095 more accurately, on the Darwin kernel running on PowerPC hardware.
3096 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3097 * Compiler code deletion notes now signal a condition of type
3098 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3099 an associated MUFFLE-WARNING restart.
3100 * The compiler now performs limited argument count validation of
3101 constant format strings in FORMAT, and where appropriate in ERROR,
3102 CERROR and WARN. (thanks to Gerd Moellmann)
3103 * New ASDF-INSTALL contrib can be used for automatic download and
3104 installation of third-party Lisp code from CCLAN or other sites
3106 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3107 which forces another thread to execute a function supplied by the
3109 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3110 now accept and act upon their :ELEMENT-TYPE keyword argument.
3111 (reported by Martin Atzmueller, Edi Weitz)
3112 * bug fix: FILE-POSITION now accepts position designators up to
3113 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3114 is the greater. (thanks to Patrik Nordebo)
3115 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3116 Kalle Olavi Niemitalo)
3117 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3118 printable. (reported by Eric Marsden)
3119 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3120 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3121 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3122 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3123 (thanks to Stig Sandoe)
3124 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3125 UNREAD-CHAR now correctly includes the unread character in the
3126 target sequence. (thanks to Gerd Moellmann)
3127 * bug fix in threaded builds: the system can now be suspended and
3128 resumed by shell job control with minimal disruption.
3129 * bug fixes in times and timezones >2038AD
3130 * better handling of "where is GNU make?" problem in build scripts
3131 (thanks to Nikodemus Siivola)
3132 * new optimization: inside a named function any reference to a
3133 function with the same name is considered to be a self-reference;
3134 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3135 optimization quality.
3136 * new optimization on x86: logical functions and + now have
3137 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3138 used when the result is truncated to 32 bits.
3139 * VALUES declaration is partially enabled.
3140 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3141 * fixed some bugs revealed by Paul Dietz' test suite:
3142 ** The system now obeys the constraint imposed by
3143 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3144 types form a lattice under type intersection.
3145 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3146 ** ASSOC now ignores NIL elements in an alist.
3147 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3148 and (1+ MOST-POSITIVE-FIXNUM) answers.
3149 ** The addition of a method with invalid qualifiers to a generic
3150 function does not cause an error to be signalled immediately;
3151 a warning is signalled, and the error is generated only on
3152 calling the generic function.
3153 * changed .fasl file version number, in part to add type codes for
3154 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3155 obscure ANSI requirements
3157 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3158 * fixed bug 148: failure to inline-expand a local function left
3159 garbage, confusing the compiler.
3160 * fixed bugs 3cd: structure slot readers perform type check if the
3161 slot can have an invalid value (i.e. it is either not initialized
3162 or can be written with a less specific slot writer).
3163 * bug fix: the compiler now traps array references to elements off
3164 the end of an array; previously, the bounds checking in some
3165 circumstances could go off-by-one.
3166 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3168 * type declarations for array element types now obey the description
3169 on the CLHS page "Declaration TYPE", as per discussions on
3170 sbcl-help around 2003-05-08. This means that a declaration
3171 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3172 declaration, all references to BAR will be asserted or assumed
3173 (with THE, so dependent on compiler policy) to involve objects of
3174 type FOO. Note that no such declaration is implied in
3175 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3176 * declared types of functions from the "Conditions"
3177 chapter. (reported by Paul Dietz)
3178 * bug fix: CERROR accepts a function as its first argument.
3179 * bug fix: NTH an NTHCDR accept a bignum as index
3180 arguments. (reported by Adam Warner)
3181 * optimization: character compare routines now optimize comparing
3182 against a constant character. (reported by Gilbert Baumann)
3183 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3184 argument now works properly on the MIPS platform.
3185 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3186 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3187 declared to have a functional type, does not cause an error
3189 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3190 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3191 * fixed bug: if last continuation of a deleted block has a
3192 destination, this destination should be deleted too. (reported by
3194 * fixed a bug in the bootstrap process: the host compiler's values
3195 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3196 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3197 test case from Patrik Nordebo)
3198 * improved the ability of the disassembler on the PPC platform to
3199 provide helpful disassembly notes.
3200 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3201 the class in more cases than previously.
3202 * bug fix: FILE-POSITION now understands :START and :END for
3203 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3204 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3205 8) data. (thanks to David Lichteblau)
3206 * bug fix: it is possible to add a method to a generic function
3207 without lambda list.
3208 * bug fix: reader failed to signal END-OF-FILE inside an
3209 object representation. (reported by Nikodemus Siivola)
3210 * fixed some bugs revealed by Paul Dietz' test suite:
3211 ** LAST and [N]BUTLAST should accept a bignum.
3212 ** condition slot accessors are methods.
3213 ** (VECTOR NIL) is a subtype of STRING.
3215 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3216 * minor incompatible change: some nonsensical specialized lambda
3217 lists (used in DEFMETHOD) which were previously ignored now signal
3219 * minor incompatible change: the system is now aware of the types of
3220 variables in the COMMON-LISP package, and will signal errors for
3221 most violations of these type constraints (where previously they
3222 were silently accepted).
3223 * minor incompatible change: COMPILE-FILE now uses the freedom
3224 afforded (ANSI 3.2.2.3) to use derived function types for
3225 functions defined in the same file. This also permits the system
3226 to warn on static type mismatches and function
3227 redefinition. (Currently it does not work with high DEBUG level.)
3228 * minor incompatible change: VALUES declaration is disabled.
3229 * When issuing notes, the compiler now signals a condition of type
3230 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3231 restart for use in user handlers. It is expected that the
3232 COMPILER-NOTE condition will eventually become a condition
3233 supertype to a hierarchy of note types, which will then be
3234 handleable in a similar fashion. However, at the moment, no such
3235 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3236 but it's an implementation detail, not a classification for the
3238 * Changes in type checking closed the following bugs:
3239 ** type checking of unused values (192b, 194d, 203);
3240 ** template selection based on unsafe type assertions (192c, 236);
3241 ** type checking in branches (194bc).
3242 * A short form of VALUES type specifier has ANSI meaning (it has
3243 increased the number of situations when SBCL cannot perform type
3245 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3246 keywords or constants is permissible.
3247 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3248 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3249 classes. (thanks to Antonio Martinez)
3250 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3251 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3252 argument to a pretty-print stream. Instead, it leaves any such
3253 operations to DESCRIBE-OBJECT methods.
3254 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3256 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3257 lambda lists. (thanks to David Lichteblau)
3258 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3259 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3260 (thanks to Gerd Moellmann)
3261 * fixed bug 246: increased compilation speed of long
3262 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3264 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3266 * DEFCONSTANT now throws a condition of type
3267 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3268 constant to a non-EQL value; CONTINUE and ABORT restarts
3269 respectively change and preserve the value.
3270 * fixed bug 63: The code walker, part of the implementation of CLOS,
3271 is now better at handling symbol macros.
3272 * bug fix: There is no longer an internal implementation type named
3273 CL:LENGTH. (reported by Raymond Toy)
3274 * bug fix: In macro-like defining macros/special operators the
3275 implicit block does not enclose the lambda list.
3276 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3277 enclosed in parentheses) are not suitable as type specifiers, and
3278 their use properly signals an error now.
3279 * bug fix: An argument count mismatch for a type specifier in code
3280 being compiled no longer causes an unhandled error at compile
3281 time, but signals a compile-time warning.
3282 * fixed simple vector readable printing
3283 * bug fix: DESCRIBE takes more care over whether the class
3284 precedence list slot of a class is bound before accessing it.
3285 (reported by Markus Krummenacker)
3286 * bug fix: FORMATTER can successfully compile pretty-printer format
3287 strings which use variants of the ~* directive inside.
3288 * bug fix: SEARCH now applies its TEST predicate to the elements of
3289 the arguments in the correct order. (thanks to Wolfhard Buss)
3290 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3291 in type inference. (thanks to Robert E. Brown)
3292 * bug fix: Reading in symbols with an explicit package name of ""
3293 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3294 * fixed some bugs revealed by Paul Dietz' test suite:
3295 ** NIL is now allowed as a structure slot name.
3296 ** Arbitrary numbers, not just REALs, are allowed in certain
3297 circumstances in LOOP for-as-arithmetic clauses.
3298 ** Multiple class redefinitions before slot access no longer
3299 causes a type error.
3300 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3301 association between the name and a class.
3302 ** Generic functions with non-standard method-combination and over
3303 five methods all of which return constants no longer return NIL
3304 after the first few invocations. (thanks to Gerd Moellmann)
3305 ** CALL-NEXT-METHOD with no arguments now passes the original
3306 values of the arguments, even in the presence of assignment.
3307 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3309 ** DISASSEMBLE works with closures and funcallable instances.
3310 ** ADD-METHOD now returns the generic function, not the new method.
3311 ** FIND-METHOD signals an error if the lengths of the specializers
3312 is incompatible with the generic function, even if the ERRORP
3314 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3315 which its argument is a member.
3316 ** DEFCLASS only redefines the class named by its class-name
3317 argument if that name is the proper name of the class;
3318 otherwise, it creates a new class.
3319 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3320 of the UNBOUND-SLOT condition to the name of the slot.
3321 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3322 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3323 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3324 SLOT-MAKUNBOUND in the specified fashion.
3326 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3327 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3328 cross-compilation host. As a consequence, we can now bootstrap our
3329 way up to SBCL starting with a bare gcc toolchain and human-readable
3330 source code (first the source to CLISP, then the source to SBCL).
3331 * A contributed module containing a partial implementation of the
3332 simple-streams interface has been included. (thanks to Rudi
3334 * A contributed module implementing the RFC1321 Message Digest
3335 Algorithm, known as MD5, has been included.
3336 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3337 no longer has any effect, as the code controlled by this feature
3338 has been deleted. (As far as we know, no-one has ever built using
3339 this feature, and its semantics were confused in any case).
3340 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3341 work on conditions (as required by the ANSI specification),
3342 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3343 expected behaviour on conditions. Users should note, however,
3344 that such behaviour is not required by the ANSI specification,
3345 and so use of this behaviour may render their code unportable.
3346 * fixed some bugs revealed by Paul Dietz' test suite:
3347 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3349 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3350 ** SXHASH on condition objects no longer returns NIL.
3351 ** :ALLOCATION :CLASS slots are better treated; their values are
3352 updated on class redefinition, and initforms inherited from
3353 superclasses are applied.
3354 ** REMOVE-METHOD returns its generic function argument even when
3355 no method was removed.
3356 ** SHARED-INITIALIZE now initializes the values of the requested
3357 slots, including those with :ALLOCATION :CLASS.
3358 ** ALLOCATE-INSTANCE now works on structure classes defined via
3359 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3361 ** SLOT-EXISTS-P now works on conditions, as well as structures
3363 ** MAKE-LOAD-FORM now has the required methods on
3364 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3365 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3366 keyword, and now implements the SLOT-NAMES argument.
3367 ** methods with &OPTIONAL arguments no longer allow too many
3368 arguments to be passed in the call without error.
3369 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3370 option is consistent with the required arguments of the generic
3371 function lambda list.
3372 * bug fix: REQUIRE accepts a string designator. (Thanks to
3374 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3375 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3376 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3377 * bug fix: The compiler now checks for duplicated variables in macro
3379 * bug fix: SETQ on globals returns the correct value.
3380 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3381 not a COMPILER-ERROR (followed by some other strange error on
3382 choosing the CONTINUE restart).
3383 * bug fix: make.sh and friends are now more consistent in the way that
3384 they look for GNU "make".
3386 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3387 * experimental native threads support (on x86 Linux >=2.4 only).
3388 This is not compiled in by default: you need to add :SB-THREAD to
3389 the target features. See the "Beyond ANSI" chapter of the manual
3391 * fix for longstanding nonANSIism: The old distinction between
3392 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3393 The return value from CL:FIND-CLASS is now a CLOS class, and
3394 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3395 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3396 * An interface to the MetaObject Protocol, as described in Kiczales,
3397 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3398 MIT Press, 1991, is available from the SB-MOP package.
3399 * incompatible change: the SB-PCL package should now be considered
3400 a private implementation detail, and no longer a semi-private MOP
3402 * minor incompatible change: due to rearrangement for threads, the
3403 control stack and binding stack are now allocated at arbitrary
3404 addresses instead of being hardcoded per-port. Users affected by
3405 this probably have to be doing advanced things with shared
3406 libraries, and will know who they are.
3407 * minor incompatible change: Previously, all --eval forms used were
3408 processed with READ before any of them were processed with EVAL.
3409 Now each --eval form is processed with both READ and EVAL before
3410 the next --eval form is processed. (Thus package operations like
3411 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3412 work as the user might reasonably expect.)
3413 * minor incompatible change: *STANDARD-INPUT* is now only an
3414 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3416 * minor incompatible change: Y-OR-N-P is now character-oriented,
3417 not line oriented. Also, YES-OR-NO-P now works without errors.
3418 (thanks to Antonio Martinez)
3419 * sb-aclrepl module improvements: an integrated inspector, added
3420 repl features, and a bug fix to :trace command.
3421 * Known functions, which cannot be open coded by the backend, are
3422 considered to be able to check types of their arguments. (fixing
3423 a bug report by Nathan J. Froyd)
3424 * fixed a bug in computing method discriminating functions: It is
3425 now possible to define methods specialized on classes which have
3426 forward-referenced superclasses. (thanks to Gerd Moellmann)
3427 * fixed evaluation order in optional entries (reported by Gilbert
3429 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3430 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3431 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3432 required-by-AMOP NAME argument, as well as CLASS and
3433 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3434 * fixed bug 20: DEFMETHOD can define methods using names that are
3435 not the proper names of classes to designate class specializers.
3436 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3437 Unix file descriptors, instead of blowing up. (thanks to Antonio
3439 * Garbage collection refactoring: user-visible change is that a
3440 call to the GC function during WITHOUT-GCING will not do garbage
3441 collection until the end of the WITHOUT-GCING. If you were doing
3442 this you were probably losing anyway.
3443 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3444 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3445 TYPEP the latter but not the former.
3446 * The compiler issues a full WARNING for calls to undefined functions
3447 with names from the CL package.
3448 * MAP-INTO for a vector destination is open coded. (reported by
3449 Brian Downing on c.l.l)
3450 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3451 documentation string.
3452 * fixed some bugs revealed by Paul Dietz' test suite:
3453 ** COPY-ALIST now signals an error if its argument is a dotted
3455 ** Condition slots are now accessed more correctly in the presence
3456 of multiple initargs for a given slot.
3457 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3458 exclude restarts of the same name associated with a different
3460 ** DEFCLASS of forward-referenced classes with another
3461 forward-referenced class in the superclasses list no longer
3463 ** Condition slots are now initialized once each, not multiple
3464 times. (thanks to Gerd Moellmann)
3465 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3467 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3468 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3469 arguments contain duplicated elements.
3470 ** RESTART-CASE understands local macros.
3471 ** RESTART-CASE associates exactly its own restarts with a condition.
3472 ** ENDP in safe mode checks its argument to be of type LIST.
3473 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3474 in question is unbound.
3475 ** Optimized MAKE-INSTANCE functions no longer cause internal
3476 assertion failures in the presence of duplicate initargs.
3477 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3478 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3479 propagated even in the ctor optimized implementation of
3481 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3483 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3484 * a better implementation of SXHASH on (simple) bit vectors,
3485 measured both in execution speed and in distribution of results
3486 over the positive fixnums, has been installed. Likewise, a better
3487 implementation of EQUAL for simple bit vectors is now available.
3488 * fixed CEILING optimization for a divisor of form 2^k.
3489 * fixed bug 240 (emitting extra style warnings "using the lexical
3490 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3491 by Antonio Martinez)
3492 * fixed SXHASH, giving different results for NIL depending on type
3493 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3494 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3495 variable. (found by Rolf Wester)
3496 * SBCL does not ignore type declarations for special
3497 variables. (reported by rif on c.l.l 2003-03-05)
3498 * some bug fixes in contrib/sb-aclrepl/
3499 * fixed some bugs revealed by Paul Dietz' test suite:
3500 ** a bug in the CONS type specifier, whereby the CAR and CDR
3501 types got intertwined, has been fixed;
3502 ** the type system is now able to reason about the interaction
3503 between INTEGER and RATIO types more completely;
3504 ** APPEND, [N]REVERSE and NRECONC check that those their
3505 arguments, which must be proper lists, are really so;
3506 ** An array specialized to be unable to hold elements has been
3507 implemented, as required -- yes, really -- by ANSI;
3508 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3509 on malformed property lists;
3511 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3512 * incompatible packaging change: in line with Unix convention,
3513 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3514 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3515 * REQUIRE and PROVIDE are now optionally capable of doing something
3516 useful. See the documentation string for REQUIRE.
3517 * infrastructure for a managed SBCL contrib system: contributed
3518 modules in this release include:
3519 ** the ASDF system definition facility;
3520 ** an interface to the BSD Sockets API;
3521 ** an ACL-like convenience interface to the repl;
3522 (thanks to Kevin Rosenberg)
3523 ** an implementation of ROTATE-BYTE, with efficient implementation
3525 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3526 gives a closer approximation to the right answer than previously.
3527 (thanks to Raymond Toy)
3528 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3529 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3530 optional environment arguments, as required by ANSI.
3531 * fixed bugs in other functions taking environment objects, allowing
3532 calls with an explicit NIL environment argument to be compiled
3534 * fixed bug 228: primary return values from
3535 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3536 COMPILE or FUNCTION.
3537 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3538 :TYPE will no longer signal errors on innocuous objects.
3539 * fixed bug 231b: SETQ is better at respecting type declarations in
3540 the lexical environment.
3541 * fixed a bug in DEFCLASS: classes named by symbols with no or
3542 unprintable packages can now be defined.
3543 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3544 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3545 * fixed compiler failure related to checking types of functions.
3546 (reported by Robert E. Brown)
3547 * the compiler is now much more consistent in its error-checking
3548 treatment of bounding index arguments to sequence functions: in
3549 (SAFETY 3) code, errors will be signalled in almost all cases if
3550 invalid sequence bounding indices are passed to functions defined
3551 by ANSI to operate on sequences.
3552 * fixed a bug in the build procedure: documentation of SBCL-specific
3553 packages is now preserved and available in the final Lisp image.
3554 * lifted FDEFINITION lookup out of loops in the implementation of
3555 many list operations. (thanks to Robert E. Brown)
3556 * fixed a bug in the reader: the #n# reader macro now works for
3557 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3558 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3559 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3560 E. Brown and Tony Martinez respectively)
3561 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3562 SLOT-BOUNDP: in particular, it is now able to optimize them much
3563 better, and is now not vulnerable to having packages renamed.
3564 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3565 always called when a slot is not present in an instance. (thanks
3567 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3568 longer signal an error on unreading a character following EOF on
3569 the previous constituent stream. (thanks to Tony Martinez)
3570 * fixed some bugs revealed by Paul Dietz' test suite:
3571 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3572 not just nonnegative fixnums;
3573 ** the logical bit-array operators such as BIT-AND now accept an
3574 explicit NIL for their "opt-arg" argument (to indicate a
3575 freshly-consed result bit-array);
3576 ** ELT now signals an error on an invalid sequence index in safe
3578 ** the type system is now cleverer about negations of numeric
3579 types, and consequently understands the BIGNUM and RATIO types
3581 ** the type system is now cleverer about the interaction between
3582 INTEGER and RATIO types: while bugs still remain, many more
3583 cases are accurately computed;
3584 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3585 if it is in the last clause;
3586 ** CONSTANTLY now correctly returns a side-effect-free function in
3588 ** DECLARE is no longer treated as a special-operator; in
3589 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3590 * incremented fasl file version number due to the change in the
3591 DEFSTRUCT-SLOT-DESCRIPTION structure.
3593 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3594 * minor incompatible change: code processed by the "interpreter" or
3595 EVAL now has a compilation optimization policy of (DEBUG 2)
3596 (changed from (DEBUG 1)) to improve debuggability of interactive
3597 development, and to allow the use of the debug RETURN command in
3599 * an experimental implementation of the RETURN command for the
3600 debugger has been included. (thanks to Frederik Kuivinen)
3601 * fixed bug 62: constraints were not propagated into a loop.
3602 * fixed bug in embedded calls of SORT (reported and investigated by
3604 * fixed some bugs revealed by Paul Dietz' test suite:
3605 ** printing and reading of arrays with some dimensions having
3606 length 0 (thanks to Gerd Moellmann);
3607 ** BOA constructor with &AUX argument without a default value does
3608 not cause a type error;
3609 ** CONSTANTP now returns true for all self-evaluating objects.
3611 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3612 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3613 accessors that are related by inheritance, as specified in the
3614 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3615 Valtteri Vuorikoski)
3616 * The compiler is now able to inline functions that were defined in
3617 a complex lexical environment (e.g. inside a MACROLET).
3618 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3620 * Support for the upcoming FreeBSD-5.0 release has been included.
3621 (thanks to Dag-Erling Smorgrav)
3622 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3623 effect when it is not in a toplevel context.
3624 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3625 stand a better chance of being correct. (thanks to Gerd
3627 * fixed bug in COERCE, which now signals an error on coercing a
3628 rational to a bounded real type which excludes the expected
3630 * The compiler is now able to derive types more accurately from the
3631 COERCE and COMPILE functions.
3632 * fixed bug 223: functional binding is considered to be constant
3633 only for symbols in the CL package.
3634 * fixed bug 231: SETQ did not check the type of a variable being set
3635 (reported by Robert E. Brown)
3636 * A new optimization for MAKE-INSTANCE has been included, fixing
3637 various bugs (including relating to :ALLOCATION :CLASS slots and
3638 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3640 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3641 ** As required by ANSI, LOOP now disallows anonymous collection
3642 clauses such as COLLECT I in conjunction with aggregate boolean
3643 clauses such as THEREIS (= I 1);
3644 ** LOOP now signals an error when any variable is reused in the
3645 same loop (including the potentially useful construct analogous
3646 to WITH A = 1 WITH A = (1+ A);
3647 ** IT is only a special loop symbol within the first clause of a
3648 conditional loop clause;
3649 ** LOOP with a typed iteration variable over a hashtable now
3650 signals a type error iff it should.
3651 * fixed some other bugs revealed by Paul Dietz' test suite:
3652 ** FILE-STREAM now names the class previously known as FD-STREAM;
3653 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3654 argument) no longer signals an error;
3655 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3656 of the slot symbol, rather than using the current package
3657 ((:CONC-NAME "") continues to intern the slot's name in the
3659 * incremented fasl file version number, because of the incompatible
3660 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3661 of the new implementation of DEFINE-COMPILER-MACRO.
3663 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3664 * Support for building SBCL for MIPS platforms running in
3665 little-endian mode has now been checked in, and basic
3666 functionality on said platforms verified.
3667 * minor incompatible change: PCL now records the pathname of a file
3668 in which methods and the like are defined, rather than its
3670 * minor incompatible change: TRUENAME now considers the truename of
3671 a file naming a directory to be the pathname with :DIRECTORY
3672 component indicating that directory.
3673 * minor incompatible change: a NAMED clause in the extended form of
3674 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3675 reason for the previous behaviour is unclear.
3676 * more systematization and improvement of CLOS and MOP conformance
3677 in PCL (thanks to Gerd Moellman and Pierre Mai):
3678 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3680 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3681 primary methods with no specializers;
3682 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3684 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3685 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3686 FORWARD-REFERENCED-CLASSes; error reporting on
3687 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3689 ** SXHASH on CLOS instances now uses a slot internal to the
3690 instance to return different numbers on distinct instances,
3691 while preserving the same return value through invocations of
3693 ** DEFMETHOD signals errors when methods with longer incongruent
3694 lambda lists are added to generic functions;
3695 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3696 CLASS, as specified in AMOP;
3697 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3698 on the order returned by the primary method for classes of
3699 class STANDARD-CLASS;
3700 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3701 * fixed some bugs shown by Paul Dietz' test suite:
3702 ** DOLIST puts its body in TAGBODY;
3703 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3705 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3706 value producing form;
3707 ** if more variables are given to PROGV than values, extra
3708 variables are bound and made to have no value;
3709 ** NSUBSTITUTE on list arguments gets the right answer with
3711 ** ELT signals an error of type TYPE-ERROR when the index argument
3712 is not a valid sequence index;
3713 ** LOOP signals (at macroexpansion time) an error of type
3714 PROGRAM-ERROR when duplicate variable names are found;
3715 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3716 ** FUNCALL of special-operators now cause an error of type
3718 ** PSETQ now works as required in the presence of side-effecting
3719 symbol-macro places;
3720 ** NCONC accepts any object as its last argument;
3721 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3723 ** loop-for-as-package does not require a package to be explicitely
3725 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3727 * fixed bug 166: compiler preserves "there is a way to go"
3728 invariant when deleting code.
3729 * fixed bug 172: macro lambda lists with required arguments after
3730 &REST arguments now cause an error to be signalled. (thanks to
3732 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3733 bug. (thanks to Matthew Danish)
3734 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3736 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3737 arguments are lexically rebound. (thanks to Gerd Moellmann and
3739 * fixed bug 194: error messages are now more informative when there
3740 is no primary method applicable in a call to a generic
3741 function. (thanks to Gerd Moellmann)
3742 * fixed bug in command line argument checking (thanks to Julian
3744 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3745 (thanks to Matthew Danish)
3746 * incremented fasl file version number, because of the
3747 SXHASH-related changes in the layout of CLOS data structures
3749 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3750 * minor incompatible change: The runtime (the Unix executable named
3751 "sbcl") is now much pickier about the .core files it will load.
3752 Essentially it now requires .core files to descend from the same
3753 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3754 as the runtime does. (The intent is to prevent the crashes which
3755 can occur, and which can even be reported as mysterious failures,
3756 when people patch the sources or change the build parameters
3757 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3758 sbcl and .core files.)
3759 * fixed bug: VALUES-LIST is no longer optimized away.
3760 * fixed bug 142: The FFI conversion of C string values to Lisp
3761 string values no longer conses excessively. (thanks to Nathan
3762 Froyd porting Raymond Toy's fix to CMU CL)
3763 * began to systematize and improve MOP conformance in PCL (thanks to
3764 Nathan Froyd, Gerd Moellman and Pierre Mai):
3765 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3767 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3768 ** FINALIZE-INHERITANCE is now called on class finalization;
3769 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3770 argument precedence order.
3771 * fixed bug 202: The compiler no longer fails on functions whose
3772 derived types contradict their declared type.
3773 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3774 so it can be non-toplevel.
3775 * The fasl file version number has changed (because of the new
3776 implementation of DEFMACRO).
3777 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3778 safe code, that any length requirement by their type-specifier
3779 argument is valid. The exceptions to this are described in bug
3781 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3782 functions now check the types of their inputs as required by ANSI.
3783 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3784 introduced symbol is DECLAREd to be SPECIAL.
3785 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3786 * fixed bug: :COUNT argument to sequence functions may be negative
3787 * fixed bug: body of DO-SYMBOLS may contain declarations
3788 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3789 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3790 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3791 symbol macro only once
3792 * fixed printing of call frame when argument list is unavailable
3793 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3794 * compiler no longer signals WARNING on unknown keyword
3797 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3798 * A beta-quality port to the mips architecture running Linux,
3799 based on the old CMUCL backend, has been made. It has been tested
3800 on a big-endian kernel, and works sufficiently well to be able to
3801 rebuild itself; it has not been tested in little-endian mode.
3802 * fixed an inconsistency between gencgc.c and purify.c which made
3803 dumping/loading .core files unreliable
3804 * fixed bug 120a: The compiler now deals correctly with IFs where
3805 the consequent is the same as the alternative, instead of
3806 misderiving the return type. (thanks to Alexey Dejneka)
3807 * fixed bug 113: Logical pathnames are now dumpable (the logical
3808 host is resolved at load-time, throwing an error if it is not
3810 * fixed bug 174: FORMAT's error message is slightly clearer when a
3811 non-printing character is used in a format directive.
3812 * fixed several bugs in compiler checking of type declarations, i.e.
3813 violations of the Python "declarations are assertions" principle
3814 (thanks to Alexey Dejneka)
3815 * fixed several bugs in PCL's error checking (thanks to Gerd
3817 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3819 * fixed bug in compilation of functions as first class values
3820 (thanks to Antonio Martinez-Shotton)
3821 * The compiler's handling TYPE-ERRORs which it can prove will
3822 inevitably happen at runtime has been cleaned up and corrected
3823 in several ways. (thanks to Alexey Dejneka)
3824 * improved argument type checking for various basic arithmetic
3825 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3826 lavished on them in the past that they can be compiled in many
3827 ways in different special cases
3828 * fixed bug 181: compiler checks validity of user supplied type
3830 * cleaned up code flushing in optimization: Function calls which
3831 should signal errors for safety purposes (e.g. which ANSI says
3832 should signal errors when their arguments are of incorrect type)
3833 are no longer optimized away.
3834 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3835 * incremented fasl file version number, because changes in the
3836 implementation of sequence functions like COERCE caused
3837 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3838 in old inline expansions) to become undefined. (Actually these
3839 changes were later undone, so we might very well be binary
3840 compatible with 0.7.7 after all, but leaving the version number
3841 incremented seemed like the simplest and most conservative
3844 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3845 * An alpha-quality port to the parisc architecture running Linux,
3846 based on the old CMUCL backend, has been made. This, even more so
3847 than the other backends, should be considered still a work in
3848 progress; known problems include that the Linux kernel in 64-bit
3849 mode does not propagate the correct sigcontext structure to
3850 userspace, and consequently SBCL on a parisc64 kernel will not
3852 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3853 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3854 suppressed.) Also now that the compiler is looking at declarations
3855 in the environment, it checks optimization declarations as well,
3856 and suppresses inlining when (> DEBUG SPEED).
3857 * More fixes have been made to treatment of floating point exception
3858 treatment and other Unix signals. In particular, floating point
3859 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3860 * The detection and handling of control stack exhaustion (infinite
3861 or very deeply nested recursion) has changed. Stack exhaustion
3862 detection is now done by write-protecting pages at the OS level
3863 and applies at all optimization settings; when found, a
3864 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3865 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3866 be caught using IGNORE-ERRORS.
3867 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3868 correctly when transforming recursive LABELS functions to LETs.
3869 (thanks to Alexey Dejneka)
3870 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3871 that are names of constants or global variables.
3872 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3873 alien routines with docstrings.
3874 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3875 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3877 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3878 (thanks to Eric Marsden)
3879 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3880 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3881 * Bug fix: The SPARC backend can now compile functions involving
3882 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3883 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3884 to a functions expecting a PATHNAME-DESIGNATOR.
3885 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3886 lambda lists. (thanks to Alexey Dejneka)
3887 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3888 functions so that EXPORTing the name of the class doesn't cause
3889 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3890 to Antonio Martinez for reporting this)
3891 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3892 constant-folded without failing an assertion. (thanks to Einar
3893 Floystad Dorum for reporting this)
3894 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3895 types are now dealt with more correctly by the compiler.
3896 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3897 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3898 behaviour analogous to RENAME-FILE. This puts its behaviour more
3899 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3901 * The fasl file version number has changed again. (because of the
3902 bug fix involving the names of PCL MAKE-INSTANCE functions)
3904 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3905 * bug fix: Floating point exceptions are treated much more
3906 consistently on the x86/Linux and PPC/Linux platforms.
3907 * Array initialization with :INITIAL-ELEMENT is now much faster for
3908 cases when the compiler cannot open code the array creation, but
3909 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3910 array accesses have also seen a speed increase.
3911 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3912 specified. (This was at the root of some bad interactions between
3913 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3915 * bug fix: Internal error arguments for undefined functions are now
3916 computed correctly on the PPC/Linux platform.
3917 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3918 Raymond Toy's patch for CMU CL)
3919 * Support for the Solaris 9 operating environment has been included
3920 (thanks to Daniel Merritt)
3921 * A very ugly but hopefully complete draft of the missing FFI chapter
3922 of the manual has been created by reformatting the corresponding
3923 CMU CL manual chapter into (currently very ugly and incoherent)
3924 DocBook and bringing it up to date for SBCL behavior. Thus, the
3925 manual is now essentially complete, at least by my extreme
3926 once-and-only-once standards, whereby it's acceptable to refer to
3927 the doc strings of SB-EXT functions as the primary documentation.
3928 * The fasl file version number has changed again, due to cleanup of
3929 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3930 is no longer a static symbol.)
3932 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3933 * SBCL now builds with OpenMCL (version 0.12) as the
3934 cross-compilation host; also, more progress has been made toward
3935 bootstrapping under CLISP.
3936 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3938 * bug 158 fixed: The compiler can now deal with integer loop
3939 increments different from 1; fixing this turned out also to fix
3941 * bug 169 fixed: no more bogus warnings about using lexical bindings
3942 despite the presence of perfectly good SPECIAL declarations (thanks
3943 to David Lichteblau)
3944 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3945 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3946 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3948 * bug 180 fixed: Method combination specifications no longer ignore
3949 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3950 * bug fix: Structure type predicate functions now check their argument
3951 count as they should.
3952 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3953 correctly. (thanks to Pierre Mai)
3954 * minor incompatible change: The --noprogrammer option is deprecated
3955 in favor of the new --disable-debugger option, which is very similar.
3956 (The major difference is that it takes effect at a slightly different
3957 time at startup, causing handling of errors in --sysinit and
3958 --userinit files will be affected differently.) The
3959 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3960 been added to allow this functionality to be controlled from ordinary
3961 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3962 maintainers, who might want to run non-interactive scripts to
3963 build SBCL cores which will later be used interactively.)
3964 * minor incompatible change: The LOAD function no longer, when given
3965 a wild pathname to load, loads all files matching that pathname.
3966 Instead, an error of type FILE-ERROR is signalled.
3968 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3969 * bug 147 fixed: The compiler preserves its block link/count
3970 invariants more correctly now so that it doesn't crash. (thanks
3972 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3974 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3975 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3976 no-value-for-this-character as NIL (as specified by ANSI).
3977 * HOST-NAMESTRING on physical pathnames now returns a string that is
3978 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3979 (thanks to Christophe Rhodes)
3980 * The Alpha port handles icache flushing more correctly. (thanks to
3982 * More progress has been made toward bootstrapping under CLISP. (thanks
3983 to Christophe Rhodes)
3984 * The fasl file format has changed again, because dynamic loading
3985 on OpenBSD (which has non-ELF object files) motivated some cleanups
3986 in the way that foreign symbols are transformed and passed around.
3987 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3988 is no longer treated as whitespace by the reader, but instead as
3989 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3990 |A
\7fB|, instead of A as it used to.
3992 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3993 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3994 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3995 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3996 this as of 0.7.1.45, but was left out of the previous news section
3997 (thanks to Dan Barlow)
3998 * SBCL now runs on the Solaris operating system on SPARC architectures
3999 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4000 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4001 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4002 * SPARC backend cleanups, allowing builds of cores optimized for V8
4003 and V9 SPARCS, and also emission of code targeted to a particular
4004 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4006 * SBCL is closer to bootstrapping under CLISP, thanks to various
4007 fixes by Christophe Rhodes.
4008 * The fasl file format has changed again, to allow the compiler's
4009 INFO database to support symbol macros.
4010 * The user manual (in doc/) is formatted into HTML more nicely.
4011 (thanks to coreythomas)
4012 * The system is smarter about SUBTYPEP relationships, especially
4013 those involving NOT types (including types such as ATOM which are
4014 represented internally using NOT types). Thus SUBTYPEP is less
4015 likely to return (VALUES NIL NIL) in general, and in particular
4016 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4018 * The fasl file format has changed again, because the internal
4019 representation of types now includes a new slot to support the new
4020 SUBTYPEP-of-NOT-types logic.
4021 * (not a change in the main branch of SBCL, but a related prototype
4022 which can hopefully be merged into the main branch of SBCL in the
4023 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4024 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4025 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4026 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4027 dispatch macro character combinations. (thanks to Alexey Dejneka)
4028 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4029 that superficially look like logical namestrings correctly.
4030 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4032 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4033 default supplied-p) for &optional and &key arguments. (thanks to
4036 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4037 * incompatible change: The compiler is now less aggressive about
4038 tail call optimization, doing it only when (> SPACE DEBUG) or
4039 (> SPEED DEBUG). (This is an incompatible change because there are
4040 programs which relied on the old CMU-CL-style behavior to optimize
4041 away their unbounded recursion which will now die of stack overflow.)
4042 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4043 for non-GENCGC systems has been increased to 20M (since that
4044 seems much closer to the likely performance optimum for modern
4045 systems than the old 4M value was)
4046 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4047 and *DEBUG-PRINT-LEVEL*
4048 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4049 of CMU CL's support for SPARC, and various endianness and other
4050 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4051 * new syntactic sugar for the Unix command line: --load foo.bar is now
4052 an alternate notation for --eval '(load "foo.bar")'.
4054 ** The system now detects stack overflow and handles it gracefully,
4055 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4056 optimization settings. (This is a good thing in general, and
4057 its introduction in this version should be particularly timely
4058 for anyone whose code fails because of suppression of tail
4060 ** The system now hunts for the C variable "environ" in a more
4061 devious way, to avoid segfaults when the C library version differs
4062 between compile time and run time. (thanks to Christophe Rhodes)
4063 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4064 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4065 ** The compiler no longer issues bogus style warnings for undefined
4066 classes in the same source file as the DEFCLASSes which defined
4067 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4069 ** fixes in CONDITION class precedence list for undefined function
4070 errors (thanks to Alexei Dejneka)
4071 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4072 correctly. (thanks to Dan Barlow)
4073 ** portability fixes aiming at bootstrapping under CLISP (thanks
4074 to Dave McDonald and Christophe Rhodes)
4075 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4076 ** fixes in type translation and and type inference (thanks to
4078 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4079 ** various fixes in the new ports (thanks to Dan Barlow)
4080 * several changes related to debugging:
4081 ** suppression of tail recursion, as noted above
4082 ** stack overflow detection, as noted above
4083 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4084 is now the default. (For some time encapsulation has been more
4085 reliable than the breakpoint-based :ENCAPSULATE NIL
4086 implementation, at least on X86 systems; and I just noticed that
4087 encapsulation also seems closer to the spirit of the ANSI
4090 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4092 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4093 up properly again. (There was a packaging bug in 0.7.0 which
4094 left their definitions in SB-SYS::LOAD-FOREIGN and
4095 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4096 vital for most things which interface to C-level interfaces,
4097 like extensions working with sockets or databases or
4098 Perl-compatible regexes or whatever, and the need to fix
4099 this bug is the main reason that 0.7.1 was released so
4101 ** DEFGENERIC is now choosier about the methods it redefines, so that
4102 reLOADing a previously-LOADed file containing DEFGENERICs does
4103 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4104 cycle now works as it should. (thanks to Alexey Dejneka)
4105 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4106 fixed by Christophe Rhodes. (He actually submitted this patch
4107 months ago, and I delayed until after 0.7.0.)
4108 ** Bug 111 (internal compiler confusion about runtime checks on
4109 FUNCTION types) was fixed by Alexey Dejneka.
4110 * Some internal cleanups (getting rid of variables which aren't
4111 needed now that the byte interpreter is gone) caused the fasl
4112 file format number to change again.
4114 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4115 * major incompatible change: The default fasl file extension, i.e. the
4116 default extension for files produced by COMPILE-FILE, has changed
4117 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4119 ** There are many changes in the implementation of the compiler.
4120 SBCL is now essentially a compiler-only implementation of ANSI
4121 Common Lisp. EVAL still "interprets" a few special cases, but
4122 almost all the interesting cases are handled by creating
4123 a LAMBDA expression, calling COMPILE on it, then calling
4124 FUNCALL on the result.
4125 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4126 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4127 Since the code is newer, there might still be some new bugs
4128 (though not as many as before Martin Atzmueller's fixes:-). But
4129 the new code is substantially simpler and clearer, and hopefully
4130 any remaining bugs will be simpler, less fundamental, and more
4131 fixable then the bugs in the old code.
4132 ** The revised compiler is still a little unsteady on its feet.
4134 *** The debugging information it produces (particularly the names
4135 of FUNCTION objects) is sometimes much less useful than what
4136 the old compiler produced.
4137 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4138 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4139 within a MACROLET) has been temporarily weakened.
4140 ** There are new compiler optimizations for various functions:
4141 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4142 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4143 *** the math functions TRUNCATE, FLOOR, and CEILING
4144 *** the function-of-all-trades COERCE
4145 Mostly these should be transparent, but there's one
4146 potentially-annoying problem (bug 117): when the compiler
4147 inline-expands a function and does type analysis on the result,
4148 it can create control paths which have type mismatches, and
4149 when it can't prove that those control paths aren't taken,
4150 it will issue WARNINGs about the type mismatches. This is
4151 a particular problem in practice for the new sequence functions.
4152 It's not clear how this should be fixed, and for now, a
4153 workaround is given in the entry for 117 in the BUGS file.
4154 ** (Because of the interaction between the two previous items --
4155 occasional inlining problems and new inline expansions -- some
4156 of the new sequence function optimizations won't really kick in
4157 completely until debugging information, and then inlining, are
4158 straightened out in some future version.)
4159 * minor incompatible changes:
4160 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4161 DIRECTORY no longer implicitly promotes NIL slots of its
4162 pathname argument to :WILD. In particular, when you ask for the
4163 contents of a directory (which you used to be able to do without
4164 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4165 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4166 ** changes in behavior that ANSI explicitly defines to be
4167 implementation dependent:
4168 *** The new compiler-only implementation still conforms with ANSI,
4169 but acts a little different than before. Besides the obvious
4170 changes in performance tradeoffs (that the cost per form passed
4171 to EVAL has gone up, and the cost per form executed by EVAL
4172 has gone down), the behavior of the system changes a little
4173 because there are no longer any interpreted function objects.
4174 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4175 e.g. doing COMPILE on the output of interactive DEFUN is
4177 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4179 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4180 has changed from (:CL) to NIL.
4181 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4182 e.g. #\Newline and #\Tab, don't have names specified in the
4183 ANSI Common Lisp standard, is now based on their ASCII symbolic
4184 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4185 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4186 are no longer used for output.
4187 ** changes in internal implementation constants:
4188 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4189 4 million. (If your application spends a lot of time GCing and
4190 you have a lot of RAM, you might want to experiment with
4191 increasing it even more.)
4192 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4193 However, almost all old code should still continue to work without
4194 immediate update, as SB-C-CALL is now a (deprecated) nickname
4196 ** Old operator names in the style DEF-FOO are now deprecated in
4197 favor of new corresponding names DEFINE-FOO, for consistency with
4198 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4199 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4200 internal symbols, but a few supported extensions like
4201 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4202 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4203 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4204 etc. as you get deeper into recursive calls to the debugger
4205 command loop, instead of the old "5]", "5]]", "5]]]"
4206 sequence. (I was motivated to do this when squabbles between
4207 ILISP and SBCL left me very deeply nested in the debugger. In the
4208 short term, this change will probably provoke more ILISP/SBCL
4209 squabbles, but hopefully it will be an improvement in the long run.)
4210 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4211 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4212 function, since declaiming return types involving aliens is
4213 (1) annoyingly messy to do by hand and (2) vital to efficient
4214 compilation of code which calls such functions.
4215 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4216 longer reexported by the SB-EXT package. They're solely useful
4217 for alien code, so it seems more logical that you should get
4218 them from the SB-ALIEN package, not in SB-EXT.
4219 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4220 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4221 features. Instead, the code that they used to control is always
4222 built into the system.
4223 * many other bug fixes
4224 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4225 advantage of the new EVAL-WHEN stuff and to clean them up in
4226 general, and they are now more ANSI-compliant in a number of
4227 ways. Martin Atzmueller is responsible for a lot of this.
4228 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4230 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4231 *** correct ERROR type for various file operations
4232 *** some fixes for Lisp streams
4233 *** DEFMETHOD syntax checking
4234 *** changing old weird representation of debug information as
4235 strings (which, among their other deficiencies, don't transform
4236 correctly when you rename packages, and don't change their
4237 print representation when you change things like *PACKAGE*
4238 and *PRINT-LENGTH*) to symbols and lists of symbols
4239 He also made several improvements and fixed several bugs in DESCRIBE.
4240 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4242 *** misbehavior of WRITE-STRING/WRITE-LINE
4243 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4244 and several other LOOP problems as well
4245 *** DIRECTORY when similar filenames are present
4246 *** DEFGENERIC with :METHOD options
4247 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4248 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4249 *** argument ordering in FIND with :TEST option
4250 *** mishandled package designator argument in APROPOS-LIST
4251 *** various problems in the backquote readmacro
4252 *** a bug in APROPOS
4253 *** probably some others that I'm not describing very well here,
4254 since the CVS log documents them by reference to sbcl-devel
4255 messages, and the SourceForge archives aren't working well.:-(
4256 ** Dan Barlow improved the Alpha port (and is making progress on the
4257 PPC port, for those of you who think different).
4258 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4259 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4260 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4261 continues to work on the SPARC port (for those of you in a position
4262 to look down upon our little PC-compatible boxes from a great height).
4263 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4264 and uses that copy, rather than the current dynamic value, when
4265 it's trying to decide whether to truncate output. Thus e.g.
4266 (let ((*print-lines* 50))
4267 (pprint-logical-block (stream nil)
4269 (let ((*print-lines* 8))
4270 (print (aref possiblybigthings i) stream)))))
4271 should now truncate the logical block only at 50 lines, instead of
4272 often truncating it at 8 lines, as it did before.
4273 * The doc/cmucl/ directory, containing old CMU CL documentation
4274 from the time of the fork, is no longer part of the base system.
4275 SourceForge has shut down its anonymous FTP service, and with it
4276 my original plan for distributing the old CMU CL documentation
4277 there. For now, if you need these files you can download an old
4278 SBCL source release and extract them from it.
4279 * The fasl file version number changed again, for dozens of reasons,
4280 some of which are apparent above.
4282 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4283 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4284 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4285 patch, so that DISASSEMBLE output is much nicer.
4286 * The code in the SB-PROFILE package now seems reasonably stable.
4287 I still haven't decided what the final interface should look like
4288 (I'd like PROFILE to interact cleanly with TRACE, since both
4289 facilities use function encapsulation) but if you have a need
4290 for profiling now, you can probably use it successfully with
4291 the current CMU-CL-style interface.
4292 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4293 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4294 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4295 link now returns the dangling link itself, and for similar
4296 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4297 link itself. (In these cases the old code signalled an error and
4298 looped endlessly, respectively.) Thus, DIRECTORY now works even
4299 in the presence of dangling and cyclic symbolic links.
4300 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4301 is now a supported extension again, since the consensus on
4302 sbcl-devel was that it can be useful for ordinary development
4303 work, not just for debugging SBCL itself.
4304 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4305 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4306 that currently-defined functions might be redefined later with
4307 different return types.
4308 * Hash tables can be printed readably, as inspired by CMU CL code
4309 of Eric Marsden and SBCL code of Martin Atzmueller.
4310 * better error handling in CLOS method combination, thanks to
4311 Martin Atzmueller porting Pierre Mai's CMU CL patches
4312 * more overflow fixes for >16Mbyte I/O buffers
4313 * A bug in READ has been fixed, so that now a single Ctrl-D
4314 character suffices to cause end-of-file on character streams.
4315 In particular, now you only need one Ctrl-D at the command
4316 line (not two) to exit SBCL.
4317 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4319 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4320 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4321 does the right thing.
4322 * The implementation of some type tests, especially for CONDITION
4323 types, is now tidier and maybe faster, due to CMU CL code
4324 originally by Douglas Crosher, ported by Martin Atzmueller.
4325 * Some math functions have been fixed, and there are new
4326 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4327 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4328 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4329 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4330 likely to be built into sbcl-0.7.0.)
4331 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4332 CL, ported to SBCL by Martin Atzmueller)
4333 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4334 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4335 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4336 * There's a new slam.sh hack to shorten the edit/compile/debug
4337 cycle for low-level changes to SBCL itself, and a new
4338 :SB-AFTER-XC-CORE target feature to control the generation of
4339 the after-xc.core file needed by slam.sh.
4340 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4341 COMPILE-FILE is no longer supported, so that now every function
4342 gets an entry point, so that block compilation looks a little
4343 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4344 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4345 returns the number of bytes consed since the system started,
4346 rather than the number consed since the first time the function
4347 was called. (The new definition parallels ANSI functions like
4348 CL:GET-INTERNAL-RUN-TIME.)
4349 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4350 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4351 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4352 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4353 * Fasl file version numbers are now independent of the target CPU,
4354 since historically most system changes which required version
4355 number changes have affected all CPUs equally. Similarly,
4356 the byte fasl file version is now equal to the ordinary
4359 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4360 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4361 is no longer recognized. I apologize for this, because it was
4362 listed in SB-EXT as a supported extension, but I found that
4363 its existing behavior was poorly specified, as well as incorrectly
4364 specified, and it looked like too much of a mess to straighten it
4365 out. I have enough on my hands trying to get ANSI stuff to work..
4366 * many patches ported from CMU CL by Martin Atzmueller, with
4367 half a dozen bug fixes in pretty-printing and the debugger, and
4368 half a dozen others elsewhere
4369 * fixed bug 13: Floating point infinities are now supported again.
4370 They might still be a little bit flaky, but thanks to bug reports
4371 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4372 as flaky as they were.
4373 * The --noprogrammer command line option is now supported. (Its
4374 behavior is slightly different in detail from what the old man
4375 page claimed it would do, but it's still appropriate under the
4376 same circumstances that the man page talks about.)
4377 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4378 are now supported, and enabled by default. Thus, the compiler can
4379 handle many floating point and complex operations much less
4380 inefficiently. (Thus e.g. you can implement a complex FFT
4382 * The compiler now detects type mismatches between DECLAIM FTYPE
4383 and DEFUN better, and implements CHECK-TYPE more correctly, and
4384 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4385 thanks to patches from Martin Atzmueller.
4386 * various fixes to make the cross-compiler more portable to
4387 ANSI-conforming-but-different cross-compilation hosts (notably
4388 Lispworks for Windows, following bug reports from Arthur Lemmens)
4389 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4390 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4391 fixed thanks to Pierre Mai's CMU CL patches.
4392 * fixes to keep the system from overflowing internal counters when
4393 it tries to use i/o buffers larger than 16M bytes
4394 * fixed bug 45a: Various internal functions required to support
4395 complex special functions have been merged from CMU CL sources.
4396 (When I was first setting up SBCL, I misunderstood a compile-time
4397 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4398 * improved support for type intersection and union, fixing bug 12
4399 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4400 more obscure bugs as well
4401 * some steps toward byte-compiling non-performance-critical
4402 parts of the system, courtesy of patches from Martin Atzmueller
4403 * Christophe Rhodes has made some debian packages of sbcl at
4404 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4405 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4406 stable, but are nonetheless usable. When he's ready, I'd be happy
4407 to add them to the SourceForge "File Releases" section. (And if
4408 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4409 * new fasl file format version number (because of changes in
4410 internal representation of (OR ..) types to accommodate the new
4411 support for (AND ..) types, among other things)
4413 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4414 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4416 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4418 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4419 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4420 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4421 * DESCRIBE now works on structure objects again.
4422 * Most function call argument type mismatches are now handled as
4423 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4424 know whether the function will be redefined before the call is
4425 executed. (The compiler could flag local calls with full WARNINGs,
4426 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4427 it doesn't keep track of enough information to know whether calls
4428 are local in this sense.)
4429 * Compiler output is now more verbose, with messages truncated
4430 later than before. (There should be some supported way for users
4431 to override the default verbosity, but I haven't decided how to
4432 provide it yet, so this behavior is still controlled by the internal
4433 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4434 src/compiler/ir1util.lisp.)
4435 * Fasl file format version numbers have increased again, because
4436 support for the Gray streams extension changes the layout of the
4437 system's STREAM objects.
4438 * The Gray subclassable streams extension now works, thanks to a
4439 patch from Martin Atzmueller.
4440 * The full LOAD-FOREIGN extension (not just the primitive
4441 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4442 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4443 but like most other programs, it defaults to copying the Unix
4444 environment from the original process instead of starting the
4445 new process in an empty environment.
4446 * Extensions which manipulate the Unix environment now support
4447 an :ENVIRONMENT keyword option which doesn't smash case or
4448 do other bad things. The CMU-CL-style :ENV option is retained
4449 for porting convenience.
4450 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4451 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4453 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4455 * A patch from Martin Atzmueller seems to have solved the SIGINT
4456 problem, and as far as we know, signal-handling now works cleanly.
4457 (If you find any new bugs, please report them!)
4458 * The system no longer defaults Lisp source file names to types
4459 ".l", ".cl", or ".lsp", but only to ".lisp".
4460 * The compiler no longer uses special default file extensions for
4461 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4462 seems to expect a single default extension for all compiled code,
4463 and there's no compelling reason to try to stretch the standard
4464 to allow two different extensions.) Instead, byte-compiled files
4465 default to the same extension as native-compiled files.
4466 * Fasl file format version numbers have increased again, because
4467 a rearrangement of internal implementation packages made some
4468 dumped symbols in old fasl files unreadable in new cores.
4469 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4470 many fewer weird special cases.
4471 * Bug #17 (differing COMPILE-FILE behavior between logical and
4472 physical pathnames) has been fixed, and some related misbehavior too,
4473 thanks to a patch from Martin Atzmueller.
4474 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4475 by Tim Moore, ported to SBCL by Martin Atzmueller.
4476 * Martin Atzmueller fixed several filesystem-related problems,
4477 including bug #36, in part by porting CMU CL patches, which were
4478 written in part by Paul Werkowski.
4479 * More compiler warnings in src/runtime/ are gone, thanks to
4480 more patches from Martin Atzmueller.
4481 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4484 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4486 * DESCRIBE now works on CONDITION objects.
4487 * The debugger now handles errors which arise when trying to print
4488 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4490 * The build system now uses an additional file, customize-target-features.lisp,
4491 to allow local modifications to the target *FEATURES* list. (The point of
4492 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4493 debugging features enabled, without having to worry about propagating it
4494 into everyone's system when I do a "cvs update".) When no
4495 customize-target-features.lisp file exists, the target *FEATURES* list
4496 should be constructed the same way as before.
4497 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4498 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4499 warn about behavior which is undefined under the ANSI spec. Note: This
4500 is specified by ANSI, but it's not very popular with programmers.
4501 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4502 macro in the SBCL sources for an example of a workaround which you
4503 might use to make portable ANSI-standard code which does what you want.
4504 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4505 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4506 when it's used as a non-toplevel form. (This is required in order
4507 to implement the DEFCONSTANT-EQX macro.)
4508 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4509 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4510 funny things, due to bugs in the implementation of EVAL-WHEN
4511 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4512 non-toplevel DEFCONSTANTs are uncommon.)
4513 * The core file version number and fasl file version number have been
4514 incremented, because the old noncompliant DEFCONSTANT behavior involved
4515 calling functions which no longer exist, and because I also took the
4516 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4517 * fixed bug 1 (error handling before read-eval-print loop starts), and
4518 redid debugger restarts and related debugger commands somewhat while
4520 ** The QUIT debugger command is gone, since it did something
4521 rather different than the SB-EXT:QUIT command, and since it never
4522 worked properly outside the main toplevel read/eval/print loop.
4523 Invoking the new TOPLEVEL restart provides the same functionality.
4524 ** The GO debugger command is also gone, since you can just invoke
4525 the CONTINUE restart directly instead.
4526 ** The TOP debugger command is also gone, since it's redundant with the
4527 FRAME 0 command, and since it interfered with abbreviations for the
4529 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4531 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4532 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4533 some porting work by Martin Atzmueller)
4534 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4535 with a boatload of patches which he ported to SBCL. Now that those
4537 ** The system tries to make sure that its low-priority messages
4538 are prefixed by semicolons, to help people who like to use
4539 syntax highlighting in their ILISP buffer. (This patch
4540 was originally due to Raymond Toy.)
4541 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4542 patches originally written by Raymond Toy.
4543 ** The compiler understands coercion between single-value and
4544 multiple-VALUES type expressions better, getting rid of some very
4545 weird behavior, thanks to patches originally by Robert MacLachlan
4546 and Douglas Crosher.
4547 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4548 lambda lists, thanks to a patch originally by Pierre Mai.
4549 ** The system no longer bogusly warns about "abbreviated type
4551 ** The compiler gets less confused by inlining and RETURN-FROM,
4552 thanks to some patches originally by Tim Moore.
4553 ** The system no longer hangs when dumping circular lists to fasl
4554 files, thanks to a patch originally from Douglas Crosher.
4555 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4556 undefined function error.
4557 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4558 in structure slot initforms) for now, documented workaround instead:-|
4559 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4560 * fixed bug 5: added stubs for various Gray stream functions called
4561 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4562 installed, at least appropriate type errors are generated
4563 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4564 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4565 consistently in DEFMETHOD forms.
4566 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4567 it doesn't seem to affect SBCL after all
4568 * The C runtime system now builds with better optimization and many
4569 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4571 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4573 * The system is now under CVS at SourceForge (instead of the
4574 CVS repository on my home machine).
4575 * The new signal handling code has been tweaked to treat register
4576 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4577 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4578 downstream, e.g. in debug-int.lisp, has implicit dependencies
4579 on the unsignedness of integer representation of machine words,
4580 and that caused the system to bomb out with infinite regress
4581 when trying to recover from type errors involving signed values,
4582 e.g. (BUTLAST '(1 2 3) -1).)
4583 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4584 (This was one of the bugs Peter Van Eynde reported back in July.)
4585 * The system now uses code inspired by Colin Walters' O(N)
4586 implementation of MAP (from the cmucl-imp@cons.org mailing
4587 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4588 inline the MAP operation, and there is more than one
4589 sequence argument to the MAP call (so that it can't just
4590 do ETYPECASE once and for all based on the type of the
4591 single sequence argument). (The old non-inline implementation
4592 of the general M-argument sequence-of-length-N case required
4593 O(M*N*N) time when any of the sequence arguments were LISTs.)
4594 * The QUIT :UNIX-CODE keyword argument has been renamed to
4595 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4596 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4598 * Raymond Wiker's patches to port dynamic loading from Linux to
4599 FreeBSD have been added.
4600 * The BUGS file is now more nearly up to date, thanks in large part
4601 to Martin Atzmueller's review of it.
4602 * The debugger now flushes standard output streams before it begins
4603 its output ("debugger invoked" and so forth).
4604 * The core version number and fasl file version number have both
4605 been incremented, because of incompatible changes in the layout
4607 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4608 used to not be called for a saved Lisp image.)
4609 * Martin Atzmueller's version of a patch to fix a compiler crash,
4610 as posted on sbcl-devel 13 September 2000, has been installed.
4611 * Instead of installing Martin Atzmueller's patch for the
4612 compiler transform for SUBSEQ, I deleted the compiler transform,
4613 and transforms for some similar consing operations.
4614 * A bug in signal handling which kept TRACE from working on OpenBSD
4616 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4617 away by constant folding
4618 * The system now defines its address space constants in one place
4619 (in the Lisp sources), and propagates them automatically elsewhere
4620 (through GENESIS and the sbcl.h file). Therefore, patching the
4621 address map is less unnecessarily tedious and error-prone. The
4622 Lisp names of address space constants have also been systematized.
4623 * CVS tags like dollar-Header-dollar have been removed from
4624 the sources, because they have never saved me trouble and
4625 they've been source of trouble working with patches and other
4626 diff-related operations.
4627 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4628 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4630 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4632 * The system has been ported to OpenBSD.
4633 * The system now compiles with a simple "sh make.sh" on the systems
4634 that it's supported on. I.e., now you no longer need to tweak
4635 text in the target-features.lisp-expr and symlinks in src/runtime/
4636 by hand, the make.sh takes care of it for you.
4637 * The system is no longer so grossly inefficient when compiling code
4638 involving vectors implemented as general (not simple) vectors (VECTOR T),
4639 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4640 which dares to use the various sequence functions on non-simple
4641 vectors, takes less of a performance hit.
4642 * There is now a primitive type predicate VECTOR-T-P
4643 to test for the (VECTOR T) type, so that e.g.
4644 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4645 can now be compiled with some semblance of efficiency. (The old code
4646 turned the type declaration into a full call to %TYPEP at runtime!)
4647 * AREF on (VECTOR T) is still not fast, since it's still compiled
4648 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4649 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4650 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4651 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4652 without making full calls to SUBTYPEP at runtime.
4653 (Some analogous efficiency issues for non-simple vectors specialized to
4654 element types other than T, or for non-simple multidimensional arrays,
4655 have not been addressed. They could almost certainly be handled the
4656 same way if anyone is motivated to do so.)
4657 * The changes in array handling break binary compatibility, so
4658 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4659 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4660 instead of (VALUES T T).
4661 * By following the instructions that Dan Barlow posted to sbcl-devel
4662 on 2 July 2000, I was able to enable primitive dynamic object
4663 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4664 functionality is not implemented (since it calls ld to resolve
4665 library references automatically, requiring RUN-PROGRAM for its
4666 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4667 try to resolve library references) is now supported.
4668 * The system now flushes the standard output streams when it terminates,
4669 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4670 them at several other probably-convenient times, e.g. in each pass of
4671 the toplevel read-eval-print loop, and after evaluating a form given
4672 as an "--eval" command-line option. (These changes were motivated by a
4673 discussion of stream flushing issues on cmucl-imp in August 2000.)
4674 * The source transform for TYPEP of array types no longer assumes
4675 that an array whose element type is a not-yet-defined type
4676 is implemented as an array of T, but instead punts, so that the
4677 type will be interpreted at runtime.
4678 * There is now some support for cross-compiling in make.sh: each of
4679 the phases of make.sh has its own script. (This should be transparent
4680 to people doing ordinary, non-cross-compile builds.)
4681 * Since my laptop doesn't have hundreds of megabytes of memory like
4682 my desktop machine, I became more motivated to do some items on
4683 my to-do list in order to reduce the size of the system a little:
4684 ** Arrange for various needed-only-at-cold-init things to be
4685 uninterned after cold init. To support this, those things have
4686 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4687 symbols with such names are now uninterned after cold init).
4688 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4689 fasl files for cold load.
4690 ** Remove the old compiler structure pooling code (which used to
4691 be conditional on the target feature :SB-ALLOC) completely.
4692 ** Redo the representation of some data in cold init to be more compact.
4693 (I also looked into supporting byte compiled code at bootstrap time,
4694 which would probably reduce the size of the system a lot, but that
4695 looked too complicated, so I punted for now.)
4696 * The maximum signal nesting depth in the src/runtime/ support code has
4697 been reduced from 4096 to 256. (I don't know any reason for the very
4698 large old value. If the new smaller value turns out to break something,
4699 I'll probably just bump it back up.)
4700 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4702 * Many, many bugs reported by Peter Van Eynde have been added to
4703 the BUGS list; some have even been fixed.
4704 * While enabling dynamic object file loading, I tried to make the
4705 code easier to understand, renaming various functions and variables
4706 with less ambiguous names, and changing some function calling
4707 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4708 * While trying to figure out how to do the OpenBSD port, I tried to
4709 clean up some of the code in src/runtime/. In particular, I dropped
4710 support for non-POSIX signal handling, added various comments,
4711 tweaked the code to reduce the number of compilation warnings, and
4712 renamed some files to increase consistency.
4713 * To support the new automatic configuration functionality in make.sh,
4714 the source file target-features.lisp-expr has been replaced with the
4715 source file base-target-features.lisp-expr and the machine-generated
4716 file local-target-features.lisp-expr.
4717 * fixed a stupid quoting error in make.sh so that using CMU CL
4718 "lisp -batch" as cross-compilation host works again
4720 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4722 * DESCRIBE no longer tries to call itself recursively to describe
4723 bound/fbound values, so that it no longer fails on symbols which are
4724 bound to themselves (like keywords, T, and NIL).
4725 * DESCRIBE now works on generic functions.
4726 * The printer now prints less-screwed-up representations of closures
4727 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4728 * A private symbol is used instead of the :EMPTY keyword previously
4729 used to mark empty slots in hash tables. Thus
4730 (DEFVAR *HT* (MAKE-HASH-TABLE))
4731 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4732 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4733 now does what ANSI says that it should. (You can still get
4734 similar noncompliant behavior if bang on the hash table
4735 implementation with all the symbols you get back from
4736 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4737 This breaks binary compatibility, since tests for equality to
4738 :EMPTY are wired into things like the macroexpansion of
4739 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4741 * There's now a minimal placeholder implementation for CL:STEP,
4742 as required by ANSI.
4743 * An obscure bug in the interaction of the normal compiler, the byte
4744 compiler, inlining, and structure predicates has been patched
4745 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4746 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4748 * Missing ordinary arguments in a macro call are now detected even
4749 when the macro lambda list contains &KEY or &REST.
4750 * The debugger no longer complains about encountering the top of the
4751 stack when you type "FRAME 0" to explicitly instruct it to go to
4752 the top of the stack. And it now prints the frame you request even
4753 if it's the current frame (instead of saying "You are here.").
4754 * As specified by ANSI, the system now always prints keywords
4755 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4757 * The default initial SIZE of HASH-TABLEs is now smaller.
4758 * Type information from CLOS class dispatch is now propagated
4759 into DEFMETHOD bodies, so that e.g.
4760 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4762 is now basically equivalent to
4763 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4764 (DECLARE (TYPE SINGLE-FLOAT X))
4766 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4767 operation, without having to do run-time type dispatch.
4768 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4769 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4770 * Since I don't seem to be making big file reorganizations very often
4771 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4772 is overflowing my ability to conveniently back them up), I've finally
4773 checked the system into CVS. (The CVS repository is on my home system,
4774 not at SourceForge -- putting it on SourceForge might come later.)
4775 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4776 high-level GC-NOTIFY-FOO functions send their output. (There's
4777 still very little control of where low-level verbose GC functions
4778 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4779 less than it used to -- the GC-NOTIFY-FOO functions are now under
4780 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4781 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4782 in only one place in the source code, and propagates it automatically
4783 everywhere that it's needed. Thus e.g. when I bump the version from
4784 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4785 * The C source files now include boilerplate legalese and documentation
4786 at the head of each file (just as the Lisp source files already did).
4787 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4788 to his page will be replaced with a link to his new CLiki service.
4790 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4792 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4793 * The build process now looks for GNU make under the default name "gmake",
4794 instead of "make" as it used to. If GNU make is not available as "gmake"
4795 on your system, you can change this default behavior by setting the
4796 GNUMAKE environment variable.
4797 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4798 can build without error under CMU CL.
4800 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4802 * There is now a partial SBCL user manual (with some new text and some
4803 text cribbed from the CMU CL manual).
4804 * The beginnings of a profiler have been added (starting with the
4805 CMU CL profiler and simplifying and cleaning up). Eventually the
4806 main interface should be through the TRACE macro, but for now,
4807 it's still accessed through vaguely CMU-CL-style functions and macros
4808 exported from the package SB-PROFILE.
4809 * Some problems left over from porting CMU CL to the new
4810 cross-compilation bootstrap process have been cleaned up:
4811 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4812 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4813 part when getting rid of the compiler *BACKEND* stuff.)
4814 ** The value of *NULL-TYPE* was screwed up, because it was
4815 being initialized before the type system knew the final
4816 definition of the 'NULL type. This screwed up several key
4817 optimizations in the compiler, causing inefficiency in all sorts
4818 of places. (I found it because I wanted to understand why
4819 GET-INTERNAL-RUN-TIME was consing.)
4820 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4821 PROCLAIM FTYPE information. Unfortunately this broke binary
4822 compatibility again, since now the forms output by DEFGENERIC
4823 to refer to functions which didn't exist in 0.6.3.
4824 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4825 can use the new (as of 0.6.3) transform for SOME into MAP into
4827 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4828 values to (INTEGER 0 1000000), so that the time code will no longer
4829 occasionally get blown up by Linux returning 1000000 microseconds
4830 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4831 its output conform to the ANSI spec. (Alas, this makes its output
4832 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4833 * A full call to MAP NIL with a single sequence argument no longer conses.
4834 * fixes to problems pointed out by Martin Atzmueller:
4835 * The manual page no longer talks about multiprocessing as though
4836 it were currently supported.
4837 * The ILISP support patches have been removed from the distribution,
4838 because as of version 5.10.1, ILISP now supports SBCL without us
4839 having to maintain patches.
4840 * added a modified version of Raymond Toy's recent CMU CL patch for
4841 EQUALP comparison of HASH-TABLE
4843 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4845 * The system still can't cross-compile itself with
4846 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4847 entails), but at least it can compile more of itself that way
4848 than it used to be able to, and various buglets which were uncovered
4849 by trying to cross-compile itself that way have now been fixed.
4850 * This release breaks binary compatibility again. This time
4851 at least I've incremented the FASL file format version to 2, so that the
4852 problem can be detected reliably instead of just causing weird errors.
4853 * various new style warnings:
4854 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4855 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4856 ** using the lexical binding of a variable named in the *FOO* style
4857 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4858 as specified by ANSI.
4859 * *RANDOM-STATE* is no longer automatically initialized from
4860 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4861 default behavior of the system is to repeat its behavior every time
4862 it's run. If you'd like to change this behavior, you can always
4863 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4864 old convention there was no comparably easy way to get the system to
4865 repeat its behavior every time it was run.
4866 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4867 FTYPE declarations has been removed, in favor of their ANSI
4868 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4869 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4870 the types of their sequence arguments can be determined at compile time.
4871 This is done through a new open code expansion for MAP which eliminates
4872 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4873 argument types can be determined at compile time.
4874 * The optimizer now transforms COERCE into an identity operation when it
4875 can prove that the coerced object is already of the correct type. (This
4876 can be a win for machine generated code, including the output of other
4877 optimization transforms, such as the MAP transform above.)
4878 * Credit information has been moved from source file headers into CREDITS.
4879 * Source file headers have been made more standard.
4880 * The CASE macro now compiles without complaining even when it has
4883 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4885 * (Note that the way that the PCL macroexpansions were rewritten
4886 to accommodate the change in DEFGENERIC below breaks binary
4887 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4888 not run under sbcl-0.6.2. Once we get out of alpha releases,
4889 i.e. hit release 1.0.0, we'll probably try to maintain binary
4890 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4891 and sbcl-1.4.4. Until then, however, it might be fairly common
4892 for maintenance releases to break binary compatibility.)
4893 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4895 * The reporting of unhandled signals has been changed to print some
4896 explanatory text as well as the report form. (Previously only
4897 the report form was printed.)
4898 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4899 it defines, so that the compiler no longer issues undefined function
4900 warnings for compiled-but-not-yet-loaded generic functions.
4901 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4902 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4903 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4904 section of the ANSI spec are supported.
4905 * The "" nickname for the "KEYWORD" package has been removed.
4906 The reader still handles symbol tokens which begin with a package marker
4907 as keywords, but it doesn't expose its mechanism for doing so in the
4908 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4909 * The system now issues STYLE-WARNINGs for contradictory TYPE
4910 proclamations. (Warnings for contradictory FTYPE proclamations would
4911 be nice too, but those can't be done usefully unless the type system
4912 is made smarter about FUNCTION types.)
4913 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4914 systematized, so that "*target-*.lisp is supposed to exist only on the
4915 target and imply that there's a related file which exists on the
4916 host, and *host-*.lisp is supposed to exist only on the host and imply
4917 that there's a related file which exists on the target. This involves a
4918 lot of renaming. Hopefully the acute confusion caused by the renaming
4919 will be justified by the reduction in chronic confusion..
4920 ** runtime-type.lisp -> early-target-type.lisp
4921 ** target-type.lisp -> late-target-type.lisp
4922 ** early-host-format.lisp -> early-format.lisp
4923 ** late-host-format.lisp -> late-format.lisp
4924 ** host-error.lisp -> misc-error.lisp
4925 ** early-error.lisp -> early-target-error.lisp
4926 ** late-error.lisp -> late-target-error.lisp
4927 ** host-defboot.lisp -> early-defboot.lisp
4928 ** code/misc.lisp -> code/target-misc.lisp
4929 ** code/host-misc.lisp -> code/misc.lisp
4930 ** code/numbers.lisp -> code/target-numbers.lisp
4931 ** code/early-numbers.lisp -> numbers.lisp
4932 ** early-host-type.lisp -> early-type.lisp
4933 ** late-host-type.lisp -> late-type.lisp
4934 ** host-typep.lisp -> typep.lisp
4935 ** load.lisp -> target-load.lisp
4936 ** host-load.lisp -> load.lisp
4937 ** host-disassem.lisp -> disassem.lisp
4938 ** host-insts.lisp -> insts.lisp
4939 ** byte-comp.lisp -> target-byte-comp.lisp
4940 ** host-byte-comp.lisp -> byte-comp.lisp
4941 ** host-signal.lisp -> signal.lisp
4942 ** host-defstruct.lisp -> defstruct.lisp
4943 ** late-target-type.lisp -> deftypes-for-target.lisp
4944 Furthermore, several other previously target-only files foo.lisp (e.g.
4945 hash-table.lisp and random.lisp) have been split into a target-and-host
4946 foo.lisp file and a target-only target-foo.lisp file, with their key type
4947 definitions in the target-and-host part, so that the cross-compiler will
4948 know more about target types.
4949 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4950 gone away. In their place are various *BACKEND-FOO* variables
4951 corresponding to the slots of the old structure.
4952 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4953 into the target SBCL has been fixed.
4954 * The chill.lisp system for loading cold code into a running SBCL
4956 * Support for the CMU CL "scavenger hook" extension has been removed.
4957 (It was undocumented and unused in the CMU CL sources that SBCL was
4958 derived from, and stale in sbcl-0.6.1.)
4959 * Various errors in the cross-compiler type system were detected
4960 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4961 (enabling various consistency checks). Many of them were fixed,
4962 but some hard problems remain, so the compiler is back to
4963 running without *TYPE-SYSTEM-INITIALIZED* for now.
4964 * As part of the cross-compiler type system cleanup, I implemented
4965 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4966 * I have started adding UNCROSS calls throughout the type system
4967 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4968 on cross-compiler input files will be able to go away, and various
4970 * CONSTANTP now returns true for quoted forms (as explicitly required
4973 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4975 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4976 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4977 (MAKE-LIST -1). In the longer term, it ought to become true
4978 that declarations are assertions even at SAFETY 1. For now, it's not
4979 quite true even at SAFETY 3, but it's at least more nearly true..
4980 (Note that this change seems to increases the size of the system by
4981 O(5%) and to decrease the speed of the compiler by 20% or more.)
4982 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4983 for the problem of printing dozens of lines of distracting information
4984 about low-level system machinery as part of the top stack frame
4985 on entry to the debugger when an undefined function was called.
4986 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4987 is not reset to COMMON-LISP-USER.
4988 * Compilation of stuff related to dyncount.lisp has been made conditional
4989 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4990 smaller. The various dyncount-related symbols have been moved into
4991 a new "SB-DYNCOUNT" package.
4992 * tty-inspect.lisp has been renamed to inspect.lisp.
4993 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4994 feature has gone away. (When we eventually port to other flavors of
4995 libc and/or Unix, we'll try to make the differences between flavors
4996 invisible at the user level.)
4997 * Various other *FEATURES* tags, and/or their associated conditionals,
4998 have been removed if obsolescent, or given better documentation, or
4999 sometimes given more-mnemonic names.
5001 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5003 * tidied up "make.sh" script
5004 * tidied up system directory structure
5005 * better "clean.sh" behavior
5006 * added doc/FOR-CMUCL-DEVELOPERS
5007 * many many small tweaks to output format, e.g. removing possibly-confusing
5008 trailing #\. character in DESCRIBE-INSTANCE
5009 * (EQUALP #\A 'A) no longer signals an error.
5010 * new hashing code, including EQUALP hashing
5011 * tidied up Lisp initialization and toplevel
5012 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5013 * command line argument processing
5014 * added POSIX-GETENV function to deal with Unix-ish environment variables
5015 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5016 terminating SBCL on EOF
5017 * non-verbose GC by default
5018 * There is no more "sbcl" shell script; the sbcl file is now the C
5019 runtime executable (just like CMU CL).
5020 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5022 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5023 symbol and package information as Lisp native symbol and package objects
5024 instead of strings naming symbols and strings naming packages. This way,
5025 whenever packages are renamed (as in warm init), debug information is
5026 transformed along with everything else.
5027 * tweaked the optimization policy declarations which control the building
5028 of SBCL itself. Now, among other things, the system no longer saves
5029 source location debugging information. (This helps two problems at once
5030 by reducing SBCL size and by keeping SBCL from trying to look for its
5031 sources -- which may not exist -- when reporting errors.)
5032 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5033 debugging and testing purposes
5034 * cleaned up printing, making the printer call PRINT-OBJECT for
5035 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5036 methods, giving nearly-ANSI behavior
5037 * converted almost all special variables to use *FOO* naming convention
5038 * deleted PARSE-TIME functionality, since it can be done portably
5039 * moved some files out of cold init into warm init
5040 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5042 * regularized formatting of source files
5043 * added an install.sh script
5044 * fixed ridiculous memory usage of cross-compiler by making
5045 compiler/alloc.lisp not try to do pooling unless it can hook
5046 itself into the GC of the cross-compilation host. Now the system
5047 builds nicely on my old laptop.
5048 * added :SB-ALLOC in target-features.lisp-expr
5049 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5050 was not implemented)
5051 * re-did condition handling and note reporting in the compiler. Notes
5052 are no longer handled by signalling conditions. Style warnings
5053 and warnings are handled more correctly and reported in such a way
5054 that it's easy to find one or the other in your output (so that you
5055 can e.g. figure out which of many problems caused COMPILE-FILE to
5057 * changed the severity of several compiler warnings from full WARNING
5058 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5059 compiler note reporting so that it doesn't use the condition system
5060 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5061 COMPILE-FILE command)
5062 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5063 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5064 no longer supported, since their implementation was deeply intertwingled
5065 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5066 * removed bogus "support" for compiler macros named (SETF FOO), and
5067 removed the compiler macro for SETF INFO (but only after making a fool
5068 of myself on the cmucl-imp mailing list by posting a bogus patch for
5069 DEFINE-COMPILER-MACRO..)
5070 * Compiled files containing forms which have side effects on the Lisp
5071 reader (such as DEFPACKAGE forms) are now handled more correctly.
5072 (Compiler queuing of top level lambdas has been suppressed by setting
5073 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5074 * deleted various currently-unused source files, e.g. gengc.lisp. They
5075 may be added back at some point e.g. when porting to other architectures,
5076 but until they are it's distracting to distribute them and to try to
5078 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5079 there were so many of them they're just distractions, and UNCROSS is
5080 known to be able to handle the current sources
5081 * moved PROFILE functionality into TRACE, so that it will be clear
5082 how the wrapping and unwrapping of functions when you profile them
5083 interacts with the wrapping and unwrapping of functions when you
5084 trace them. (Actually, the functionality isn't there yet, but at least
5085 the interface specification is there. Hopefully, the functionality will
5086 arrive with some future maintenance release.)
5087 * removed host-oops.lisp
5088 * changed signature of QUIT function to allow UNIX-CODE argument
5089 * fixed READ-SEQUENCE bug
5090 * tweaked verbose GC output so that it looks more like the progress
5091 output that ANSI specifies for functions like LOAD
5092 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5093 * added <http://sbcl.sourceforge.com> to the banner information printed by