1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes in sbcl-1.0.28 relative to 1.0.27:
3 * bug fix: some error messages for out-of-bound array indexes confused the
4 index and the bound. (thanks to Stas Boukarev)
5 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
7 * bug fix: running regressions tests in shells without OSTYPE set now works.
8 (reported by Harald Hanche-Olsen)
9 * bug fix: more robust static space exhaustion signalling from
10 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
11 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
12 docstring away instead of storing it under names such as (LAMBDA (X)).
13 (reported by Leslie Polzer)
14 * bug fix: timers could go off in the wrong order, be delayed indefinitely
15 (thanks to Ole Arndt for the patch)
16 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
17 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
18 potentially-invalid effective methods in its cache.
19 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
20 frames, allowing for instance more reliable backtraces.
21 * optimization: faster local calls on x86/x86-64
22 * minor incompatible changes: echo-streams now propagate unread-char to the
23 underlying input stream, and no longer permit unreading more than one
25 * improvement: the debugger REPL can now reference lexical variables
26 by name directly for code compiled with (DEBUG 3).
28 changes in sbcl-1.0.27 relative to 1.0.26:
29 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
30 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
31 * improvement: the system either recovers from stack exhaustion or dies
32 properly as opposed to leaving the user uncertain of whether the handler
33 trampled on some random memory next to the stack or having to rely on
34 --lose-on-corruption (which is still a good idea to use in production
35 because stack exhaustion can happen in signal handlers which will likely
37 * bug fix: fix gc related interrupt handling bug on ppc (regression from
38 1.0.25.37, reported by Harald Hanche-Olsen)
39 * bug fix: work around signal delivery bug in darwin (regression from
40 1.0.25.44, reported by Sidney Markowitz)
41 * bug fix: fix ERROR leaking memory (reported by David Thompson)
43 changes in sbcl-1.0.26 relative to 1.0.25:
44 * incompatible change: an interruption (be it a function passed to
45 INTERRUPT-THREAD or a timer function) runs in an environment where
46 interrupts can be enabled. The interruption can use
47 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
48 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
49 potentially running out of stack. Keep in mind that in the absence
50 of WITHOUT-INTERRUPTS some potentially blocking operation such as
51 acquiring a lock can enable interrupts.
52 * incompatible change: GC-OFF and GC-ON are removed, as they were
53 always unsafe. Use WITHOUT-GCING instead.
54 * new feature: runtime option --disable-ldb
55 * new feature: runtime option --lose-on-corruption to die at the
56 slightest hint of possibly non-recoverable errors: running out of
57 memory, stack, alien stack, binding stack, encountering a memory
58 fault, etc. In the absence of --lose-on-corruption a warning is
60 * enhancement: detect binding stack exhaustion
61 * enhancement: detect alien stack exhaustion on x86/x86-64
62 * improvement: generally more stable and reliable interrupt handling
63 * improvement: there is a per thread interruption queue,
64 interruptions are executed in order of arrival
65 * improvement: a repeating timer reschedules itself when the it has
66 finished, but expiration times are spaced equally. If an
67 expiration time is in the past it will trigger after a short grace
68 period that may give a chance to other things to run.
69 * optimization: slightly faster gc on multithreaded builds
70 * optimization: faster WITHOUT-GCING
71 * bug fix: when JOIN-THREAD signals an error, do it when not holding
72 important locks so that the debugger/handler doesn't produce
73 recursive errors or deadlock.
74 * bug fix: real-time signals are not used anymore, so no more
75 hanging when the system wide real-time signal queue gets full.
76 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
78 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
79 * bug fix: fix random memory faults related to interrupts on alpha
80 * bug fix: fix random memory faults related to interrupts on sparc
81 * bug fix: fix deadlocks related to starting threads
82 * bug fix: fix deadlines on locks on futex platforms
83 * bug fix: restore errno in signal handlers
84 * bug fix: fix deadlocks related to hash tables
85 * bug fix: fix deadlocks in pcl
87 changes in sbcl-1.0.25 relative to 1.0.24:
88 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
89 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
90 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
91 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
92 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
93 better name and does not return values so stale on multiprocessor systems.
94 Also, HOLDING-MUTEX-P was added for about the only sane usage of
96 * improvement: unithread builds keep track of MUTEX-VALUE.
97 * improvement: reading from a TWO-WAY-STREAM does not touch the output
98 stream anymore making it thread safe to have a concurrent reader and
99 a writer, for instance, in a pipe.
100 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
101 arguments, making compiler-macros for SETF-functions able to inspect
102 their constant arguments.
103 * improvement: COMPILE-FILE reports times with millisecond accuracy
104 (thanks to Luis Oliveira)
105 * optimization: CHAR-CODE type derivation has been improved, making
106 TYPEP elimination on subtypes of CHARACTER work better. (reported
107 by Tobias Rittweiler, patch by Paul Khuong)
108 * bug fix: setting alien structure fields of type struct by value now
109 computes the right offset for the memory copy.
110 * bug fix: compilation problem involving inlined calls to aliens with
111 result type VOID. (reported by Ken Olum)
112 * bug fix: #235a; sequential inline expasion in different policies no
113 longer reuses the functional from the previous expansion site.
114 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
115 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
116 * bug fix: named ENUMs in multiply-referenced alien record types no longer
117 cause an implied type redefinition. Regression from 1.0.21.29.
118 * bug fix: sign-extension of small signed return values now works with C
119 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
120 * improvements to the Windows port:
121 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
122 Westfold, thanks to Rudi Schlatte)
124 changes in sbcl-1.0.24 relative to 1.0.23:
125 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
126 vector of a multidimensional SIMPLE-ARRAY.
127 * new feature: the system now signals a continuable error if standard
128 readtable modification is attempted. (thanks to Tobias Rittweiler)
129 * new feature: DIRECTORY has been extended with a non-standard keyword
130 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
131 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
132 has been robustified and documented better. (thanks to Robert Goldman)
133 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
134 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
135 * tradeoff: constant FORMAT control strings are now compiled unless
136 SPACE > SPEED (previously only when SPEED > SPACE.)
137 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
139 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
141 * bug fix: lexical type declarations are now correctly reported by
142 SB-CLTL2. (reported by Larry D'Anna)
143 * bug fix: STRING-TO-OCTETS did not handle :START properly when
144 using UTF-8 as external format. (thanks to Luis Oliveira)
145 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
146 are signalled correctly. (thanks to Stas Boukarev)
147 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
148 designator. (thanks to Tobias Rittweiler)
149 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
150 designator, and returns T instead of the function. (thanks to
152 * bug fix: direct superclasses of STANDARD-CLASS and
153 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
154 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
155 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
156 when no class with the named slot yet exists no longer causes a
157 compile-time style-warning.
158 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
159 in safe code. (reported by Didier Verna)
160 * bug fix: #430; nested structure constructors can stack allocate.
161 * bug fix: on some 64-bit platforms dynamic space size was truncated
162 to #xffff0000 bytes. (reported by Benjamin Lambert)
163 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
164 REPL unusable. (reported by Daniel Herring)
165 * bug fix: return values of READ-SEQUENCE did not take :START into
166 account on file streams, regressions since 1.0.12.22. (reported by
167 Thomas Russ, patch by Paul Khuong)
168 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
169 method specializer used to confuse permuation vector optimization.
170 * bug fix: system inserted bogus implicit type declarations for local
171 special variables in DEFMETHOD bodies.
172 * bug fix: #354; duplicated frames in backtraces due to
173 non-tail-call-optimized XEPs to functions with return type NIL
175 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
176 initializes structure object slots according to DEFSTRUCT initforms,
177 and DEFSTRUCT forms :INCLUDEind structure classes defined using
178 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
179 (reported by Bruno Haible and Stephen Wilson)
180 * bug fix: #395; fill-pointer output streams used now support
181 element-type BASE-CHAR as well.
182 * bug fix: compiler error when attempting to derive return value of
183 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
185 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
187 * bug fix: Mac OS X binaries should now be portable between Leopard
190 changes in sbcl-1.0.23 relative to 1.0.22:
191 * enhancement: when disassembling method functions, disassembly
192 for the associated fast function is also produced.
193 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
195 * optimization: printing with *PRINT-PRETTY* true is now more
196 efficient as long as the object being printed doesn't require
197 special handling by the pretty printer.
198 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
199 now interact correctly with type declarations.
200 * partial bug fix: PCL detects infinite recursion during wrapper
201 validation. (thanks to Attila Lendvai)
202 * bug fix: #426; nested function calls are inlined properly.
203 Previously if FOO was an inline function, in calls of the form
204 (FOO (FOO ...)) the outer call was not inlined.
205 * bug fix: long long arguments passed in registers to alien
206 functions on PowerPC Linux and NetBSD are now handled correctly
207 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
209 changes in sbcl-1.0.22 relative to 1.0.21:
210 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
211 for the shared object in the current directory, but passes the native
212 namestring of the designated pathname to the operation system's shared
213 object loading function as-it.
214 * minor incompatible change: --disable-debugger toplevel option now takes
215 effect before processing of initialization files and --eval or --load
217 * new feature: new commandline argument: --script, which supports
218 shebang lines. See documentation for details. (based on work by
220 * new feature: SAVE-LISP-AND-DIE can save current values of
221 --dynamic-space-size and --control-stack-size in the executable core,
222 causing it to skip normal runtime option processing. See documentation
223 for details. (thanks to Zach Beane)
224 * enhancement: inoccous calls to EVAL or generic functions dispatching
225 on subclasses of eg. STREAM no longer cause compiler notes to appear.
226 * enhancement: the system no longer resignals errors from --load and
227 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
228 associated with the original error to be lost. (thanks to Ariel
230 * enhancement: :DONT-SAVE keyword argument has been added to
231 LOAD-SHARED-OBJECT for controlling interaction with
232 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
233 the effects of an earlier LOAD-SHARED-OBJECT call.
234 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
235 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
236 provided. (reported by Cedric St-Jean)
237 * bug fix: circularity handling in the reader did not treat raw
238 structure slots correctly. (reported by Cedric St-Jean)
239 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
240 file descriptors when there were none.
241 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
242 was broken. (reporteed by Willem Broekema)
243 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
244 pathnames without a directory.
245 * bug fix: COMPILE-FILE did not warn about undefined variable
246 references at toplevel, and LOAD of the resulting fasl did
248 * bug fix: functions with non-required arguments used to end up with
249 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
250 * bug fix: redefining a function with non-required arguments didn't
251 update the system's knowledge about its call signature properly.
252 * bug fix: fixed #431; incompatible alien record type redefinitions
253 are detected and handled. (reported by Neil Haven)
254 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
255 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
257 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
258 after alien stack frames.
259 * bug fix: strings passed to mk{s,d}temp lacked null termination
261 changes in sbcl-1.0.21 relative to 1.0.20:
262 * new feature: the compiler is able to track the effective type of a
263 generic function across method addition and removal.
264 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
265 appropriately typed structure slots without locking.
266 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
267 information like those gathered by TIME using a programming-friendly
269 * new feature: TIME reports time taken even if the form performs a
270 non-local transfer of control.
271 * enhancement: reduced conservativism on GENCGC platforms: on
272 average 45% less pages pinned (measured from SBCL self build).
273 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
274 mutate constant symbols or violate declaimed type of the symbol.
275 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
276 sleeping on the semaphore in heavily contested semaphores.
277 * bug fix: semaphores and condition variables were not interrupt
279 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
280 owned by other threads anymore.
281 * bug fix: FIND on lists called KEY outside the specified
282 subsequence. (reported by budden)
283 * bug fix: LOG doesn't use single-float intermediate results when
284 given mixed integer and double-float arguments, leading to better
285 precision. (reported by Bob Felts)
286 * bug fix: LOG with base zero returned values of inconsistent type.
288 changes in sbcl-1.0.20 relative to 1.0.19:
289 * minor incompatible change: OPTIMIZE qualities
290 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
291 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
292 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
293 * documentation: some slot access efficiency guidelines have been
294 added to the user manual.
295 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
296 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
297 as ASSOC and MEMEBER.
298 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
299 to more efficient EQ-comparison versions more often.
300 * optimization: enhanced derivation of DOLIST iteration variable type
302 * optimization: constant folding of simple (LIST ...) forms as DOLIST
304 * optimization: runtime lookup of function definitions can be
305 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
306 * optimization: compiler is able to derive the return type of
307 (AREF (THE STRING X) Y) as being CHARACTER.
308 * optimization: CLRHASH on empty hash-tables no longer does pointless
309 work. (thanks to Alec Berryman)
310 * optimization: REPLACE deftransforms don't punt when :START1 or
312 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
313 no longer emits a code deletion note. (reported by Andrew
315 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
316 functions with an odd number of &OPTIONAL arguments, a &REST
317 argument, and one or more &KEY arguments at the call site.
318 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
319 arguments appeared at call sites as well.
320 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
321 READ-LINE &co can no longer read from them afterwards. (reported
323 * bug fix: fixed #427: unused local aliens no longer cause compiler
324 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
326 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
327 alien-stack leakage. (reported by Andy Hefner)
328 * bug fix: PROGV signals an error when an attempt to violate declared
329 type of a variable or bind a constant is made.
330 * bug fix: SET signals an error when an attempt to violate declared
331 type of a variable is made.
332 * bug fix: restart computation during the execution of a restart
333 test function no longer causes infinite recursion. (reported by
335 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
336 signals an error. (thanks to Pierre Mai)
337 * bug fix: EXPORT left symbol unexported in conflict situations.
338 (thanks to Michael Weber)
339 * bug fix: correctly handle name conflicts involving CL:NIL.
340 (thanks to Michael Weber)
341 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
342 conflicts arising from USEing package with conflicting symbols
343 correctly. (thanks to Michael Weber)
345 changes in sbcl-1.0.19 relative to 1.0.18:
346 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
347 warnings that go otherwise unhandled will be muffled if they are
348 of the type that's the value of this variable.
349 * optimization: stack allocation is slightly more efficient on x86
351 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
352 where a raw slot always is initialized using the initform whose
353 type is not know sufficiently well a compile-time are now compiled
354 correctly. (reported by John Morrison)
355 * bug fix: compiler no longer makes erronous assumptions in the
356 presence of non-foldable SATISFIES types.
357 * bug fix: stack analysis missed cleanups of dynamic-extent
358 arguments in non-let-converted calls to local functions.
359 * improvements to the Windows port:
360 ** adjusted address spaces for building on both Win32 and
361 Win64. (thanks for John Connors)
362 * fixed some bugs revealed by Paul Dietz' test suite:
363 ** interval arithmetic during type derivation used inexact integer
364 to single-float coercions.
365 ** arithmetic operations involving large integers and single
366 floats give the same results in compiled and interpreted code.
367 ** deriving the result type of COERCE no longer signals an error
368 if the derived type of the second argument is a MEMBER type
369 containing invalid type specifiers.
370 ** ADJOIN with constant NIL as second argument works correctly.
371 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
373 changes in sbcl-1.0.18 relative to 1.0.17:
374 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
375 profiles only the current thread.
376 * minor incompatible change: changes to SYMBOL-VALUE of constants
377 defined with DEFCONSTANT now signal an error.
378 * enhancement: SB-SPROF now has support for wallclock profiling,
379 and is also able to profile specific threads. REPORT output
380 has also additional sorting options.
381 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
383 * optimization: structure allocation has been improved
384 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
385 ** out of line constructors are ~10% faster.
386 ** inline constructors are ~15% faster.
387 ** inline constructors are capable of dynamic extent allocation
388 (generally on x86 and x86-64, in some cases on other platforms
390 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
392 * optimization: file compiler is now able to coalesce non-circular
393 lists, non-base strings, and bit-vectors. Additionally, constants
394 are never referenced through SYMBOL-VALUE at runtime.
395 * optimization: code defining methods on PRINT-OBJECT (and other
396 generic functions in the COMMON-LISP package) now loads faster.
397 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
399 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
400 fasl is now deleted. (reported by Attila Lendvai)
401 * bug fix: READ-LINE always returned NIL for the last line in files.
402 (reported by Yoshinori Tahara)
403 * bug fix: more accurate disassembly annotations of foreign function
404 calls. (thanks to Andy Hefner)
405 * bug fix: trimming non-simple strings and non-string string
406 designators when the there is nothing to trim works properly.
407 (thanks to James Knight)
408 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
409 (thanks to Travis Cross)
410 * fixed some bugs revealed by Paul Dietz' test suite:
411 ** NIL is a valid function name (regression at 1.0.13.38)
412 ** FILL on lists was missing its return value (regression at 1.0.12.27)
413 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
414 fill pointers properly (regression at 1.0.12.23)
415 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
416 displacement indices properly (regression at 1.0.12.23)
418 changes in sbcl-1.0.17 relative to 1.0.16:
419 * temporary regression: user code can no longer allocate closure
420 variable storage on stack, due to bug 419 without explicitly
421 requesting it. Please consult sbcl-devel for advice if you need to
422 use this feature in the meanwhile.
423 * new feature: runtime argument --control-stack-size can be used to
424 adjust thread default control stack size.
425 * enhancement: improved TIME output
426 ** all times are reported using the measured accuracy (milliseconds
427 for real and GC times, microseconds for everything else.)
428 ** processor cycle counts on x86 and x86-64.
429 ** interpreted forms are counted for both evaluator modes.
430 ** number of lambdas converted by the compiler is reported.
431 ** CPU percentage report (computed from real and total run time.)
432 ** more comprehensive run time reporting, using a condenced format
433 ** interperted form, lambda, and page fault counts are omitted
435 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
437 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
438 * optimization: two argument forms of LAST are upto ~10% faster
439 in normal SPEED policies.
440 * optimization: NCONC no longer needs to heap cons its &REST list
441 in normal SPEED policies.
442 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
444 * bug fix: UNION and NUNION work with :TEST-NOT once more,
445 regression since 1.0.9.1. (thanks to Eric Marsden)
446 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
447 since 1.0.15.36. (thanks to Paul Khuong)
448 * bug fix: LAST when always returned the whole list when given a bignum
449 as the second argument.
450 * bug fix: dynamic extent allocation of nested lists and vectors
451 could leak to otherwise accessible parts.
452 * bug fix: invalid optimization of heap-allocated alien variable
454 * bug fix: fasl header checking is less vulnerable to different
455 platform word lengths.
456 * bug fix: more correct assembler syntax for GNU binutils
457 2.18.50.0.4 support. (thanks to Marijn Schouten)
458 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
460 * bug fix: the fopcompiler can handle LOCALLY forms (with no
461 declarations) successfully. (reported by Attila Lendvai)
463 changes in sbcl-1.0.16 relative to 1.0.15:
464 * minor incompatible change: revert the changes to sb-posix's error
465 signaling added in 1.0.14.
466 * minor incompatible change: change PROBE-FILE back to returning
467 NIL whenever we can't get a truename, as was the case before 1.0.14.
468 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
469 inherits from ERROR instead of just CONDITION.
470 * new feature: SB-INTROSPECT can provide source locations for instances
471 as well. (thanks to Tobias Rittweiler)
472 * optimization: binding special variables now generates smaller code
473 on threaded platforms.
474 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
475 and cases where no :TEST is given but the compiler can infer that
476 the element to search is of type (OR FIXNUM (NOT NUMBER)).
477 * optimization: better LOGNOT on fixnums.
478 * optimization: modular arithmetic for a particular requested width
479 is implemented using a tagged representation unless a better
480 representation is available.
481 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
482 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
483 for wellformedness and returns a specialized vector. (reported by
484 Francois-Rene Rideau)
485 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
486 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
487 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
488 unscheduling timer at the same time as another timer fires.
489 * bug fix: don't reschedule timers for dead threads.
490 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
491 * bug fix: copying output from RUN-PROGRAM to a stream signalled
492 bogus errors if select() was interrupted.
493 * enhancement: add support for fcntl's struct flock to SB-POSIX.
495 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
496 * enhancement: cleaner backtraces for interactive interrupts, as
497 well as other cases where the interesting frames used to be
498 obscured by interrupt handling frames.
499 * enhancement: untracing a whole package using (UNTRACE "FOO") is
500 now supported, and tracing a whole package using (TRACE "FOO") now
501 traces SETF-functions as well.
502 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
503 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
504 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
505 * unreadably printed representation of hash-tables now includes
507 * bug fix: partially fixed #188: type propagation from assignments
508 is now more efficient.
509 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
510 'DOUBLE-FLOAT) are not flushable.
511 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
512 full address of the object, and none of the tag bits.
513 * bug fix: readably printing hash-tables now respects other printer
514 control variables. (reported by Cedric St-Jean)
515 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
516 keyword with MAKE-HASH-TABLE.
517 * bug fix: export SB-POSIX:MKSTEMP.
518 * bug fix: SORT was not interrupt safe.
519 * bug fix: XREF accounts for the last node of each basic-block as
521 * bug fix: MAKE-INSTANCE optimizations interacted badly with
522 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
523 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
524 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
525 create obsolete instances in the case of redefinition or
526 obsoletion of a superclass. (thanks to Andy Hefner)
527 * bug fix: Support for the Alpha architecture has been revived; it had
528 suffered somewhat from lack of maintenance since sbcl-1.0.
529 * improvements to the Windows port:
530 ** The system detects the codepage to use at startup, instead of
531 using the value from the saved core. (thanks to Kei Suzuki)
533 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
534 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
535 (see documentation for details.)
536 * revived support for OpenBSD (contributed by Josh Elsasser)
537 * partially fixed bug #108: ROOM no longer suffers from occasional
538 (AVER (SAP= CURRENT END)) failures.
539 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
540 bodies no longer cause a WARNING to be signalled. (reported by
542 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
543 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
544 the bug in TRUNCATE.) (reported by Michael Weber)
545 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
546 no samples. (reported by Andy Hefner)
547 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
548 no longer appear as (NIL ...) frames in backtraces.
549 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
550 is now actually exported from SB-EXT as documented. (reported by
552 * bug fix: sb-aclrepl now correctly understands how to inspect
553 single-floats on 64-bit platforms where single-floats are not boxed.
554 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
555 yet been finalized. (reported by Levente Meszaros)
556 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
557 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
558 SBCL-specific optimize qualities.
560 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
561 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
562 an executable in the search path, and does so in the child
563 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
564 been removed; it can be found in the CVS history, for somebody who
565 needs that search behavior (see the manual).
566 * minor incompatible change: compiler policy re. weakening type
567 checks has changed: now type checks are weakened only if SAFETY < 2
569 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
570 unparsing of directory pathnames as files. Analogously,
571 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
572 filename to parse into a directory pathname.
573 * enhancement: implicit generic function creation now signals a
574 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
575 users can bind handlers for and muffle around calls to LOAD.
576 * enhancement: RUN-PROGRAM allows unicode arguments and environments
577 to be used (using the default stream external format), and allows
578 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
579 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
580 strings and vectors whose element-type or simplicity is not fully
581 known at compile-time.
582 * optimization: STRING-TRIM and related functions no longer allocate
583 a new string when no trimming needs to be performed. These functions
584 are also faster than before when the input string has been declared
586 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
587 * optimization: READ-LINE is significantly faster for files containing
589 * optimization: non-open coded uses of character comparison operators
590 (e.g. char=) no longer cons when called with more than one parameter
591 on platforms supporting dynamic-extent allocation.
592 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
593 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
594 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
596 * bug fix: some sequence functions elided bounds checking when
598 * bug fix: too liberal weakening of union-type checks when SPEED >
600 * bug fix: more bogus fixnum declarations in ROOM implementation
603 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
604 * new feature: MAKE-HASH-TABLE now experimentally accepts a
605 :SYNCHRONIZED argument, which makes the hash-table safe for
606 concurrent accesses (but not iteration.) See also:
607 SB-EXT:WITH-LOCKED-HASH-TABLE, and
608 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
609 * optimization: CONCATENATE on strings is an order of magnitude faster
610 in code compiled with (> SPEED SPACE).
611 * optimization: SUBSEQ is ~50% faster on lists.
612 * bug fix: bug 417 fixed -- source location reporting is now more robust.
613 * bug fix: SUBSEQ on a list will now correctly signal an error if if
614 END is smaller then START.
615 * bug fix: SB-PROFILE will no longer report extra consing for nested
616 calls to profiled functions.
617 * bug fix: ROOM implementation had bogus fixnum declarations which
618 could cause type-errors when calling ROOM on large images.
619 * bug fix: if file compilation is aborted, the partial fasl is now
620 deleted, and COMPILE-FILE returns NIL as the primary value.
621 * bug fix: number of thread safety issues relating to SBCL's internal
622 hash-table usage have been fixed.
623 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
624 be returned from its body when the values were being returned
625 using unknown-values return convection and the W-P-O was wrapped
626 inside an UNWIND-PROTECT.
627 * bug fix: sb-posix should now compile again under Windows, enabling
630 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
631 * incompatible change: hash-table accessor functions are no longer
632 automatically protected by locks. Concurrent accesses on the same hash-table
633 from multiple threads can give inconsistent results or even corrupt the
634 hash-table completely. Multi-threaded applications should do their own
635 locking at the correct granularity. In the current implementation it is
636 still safe to have multiple readers access the same table, but it's not
637 guaranteed that this property will be maintained in future releases.
638 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
639 and will signal an error at runtime.
640 * enhancement: SB-THREAD package now exports a semaphore interface.
641 * enhancement: CONS can now stack-allocate on x86 and
642 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
644 * enhancement: nested lists can now be stack allocated on
645 platforms providing stack allocation support.
646 * enhancement: dynamic-extent support has been extended to support
647 cases where there are multiple possible sources for the stack
649 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
650 if the mutex is uncontested on Linux.
651 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
652 as specified by the CLHS. (thanks to Tobias Rittweiler)
653 * bug fix: NaN comparison now works on x86-64.
654 * bug fix: CLOSE :ABORT T on a stream with pending output now
656 * bug fix: instances of non-standard metaclasses using standard
657 instance structure protocol sometimes missed the slot type checks
659 * bug fix: known functions can be inlined in high-debug code.
661 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
662 * minor incompatible change: the MSI installer on Windows no longer
663 associates .lisp and .fasl files with the installed SBCL.
664 * minor incompatible change: :UNIX is no longer present in *FEATURES*
665 on Windows. (thanks to Luis Oliviera)
666 * new feature: SB-CLTL2 contrib module now implements
667 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
668 * optimization: scavenging weak pointers is now more efficient,
669 requiring O(1) instead of O(N) per weak pointer to identify
670 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
671 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
672 method bodies using constant slot-names when the first argument is
673 a specializer parameter for the method.
674 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
675 names, when the class of the instance is a direct instance
676 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
677 as slow as the constant slot-name case.)
678 * optimization: member type construction is now O(N) instead
680 * optimization: UNION and NUNION are now O(N+M) for large
681 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
683 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
684 now more readable in environments like Slime which display it.
685 (thanks to Tobias C. Rittweiler)
686 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
687 was able to infer the correct argument type for the object on which
688 the CAS operation was being performed.
689 * bug fix: copy propagation interfered with parallel assignment
690 semantics in local calls. (reported by Paul Khuong)
691 * bug fix: the signed modular fixnum shift compiled to wrong code on
692 x86 and x86-64. (spotted by a slight modification to some of
695 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
696 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
697 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
698 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
700 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
701 and generic function now print the object identity for anonymous
702 instances. (thanks to Attila Lendvai)
703 * enhancement: as an extension to MOP, SBCL now supports SETF of
704 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
705 (thanks to Attila Lendvai)
706 * enhancement: sb-cover has an alternate annotation mode which puts
707 the form annotations at the car of the form, instead of annotating
708 it completely. The benefit of this mode is that it shows better
709 which forms were instrumented by the compiler.
710 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
711 by printer control variables. (reported by Dan Corkill)
712 * bug fix: system leaked memory when delayed output was performed by
713 the OS in smaller chunks then expected. (thanks to David Smith)
714 * bug fix: system leaked memory when file streams were not closed
716 * bug fix: large objects written to slow streams that were modified
717 after the write could end up with the modified state written to
718 the underlying file descriptor.
719 * bug fix: multiple threads operating in parallel on the same stream
720 could cause buffer-overflows.
721 * bug fix: source location information is stored correctly
722 (broken since 1.0.6). This bug would generally show up as the
723 Slime debugger highlighting the wrong form when the sldb-show-source
725 * bug fix: Branch forms are again annotated as branches in the sb-cover
727 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
728 on x86-64. (reported by Gregory Vanuxem)
729 * bug fix: EQUALP could return wrong results for structures with raw
730 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
731 word). (reported by Vjacheslav Fyodorov)
732 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
735 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
736 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
737 atomic compare-and-swap operations on threaded platforms.
738 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
739 allows assigning a global minimum value to optimization qualities
740 (overriding proclamations and declarations).
741 * enhancement: closed over variables can be stack-allocated on x86
743 * performance bug fix: GETHASH and (SETF GETHASH) are once again
745 * optimization: slot definition lookup is now O(1). This speeds up
746 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
747 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
748 * optimization: ASSOC and MEMBER can now be open-coded for all
749 combinations of keyword arguments when second argument is constant
750 and SPEED >= SPACE. In other cases a specialized version is
752 * bug fix: using obsoleted structure instances with TYPEP and
753 generic functions now signals a sensible error.
754 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
755 (reported by Kristoffer Kvello)
756 * bug fix: backtrace construction is now more careful when making
757 lisp-objects from pointers on the stack, to avoid creating bogus
758 objects that can be seen by the GC.
759 * bug fix: defaulting of values in contexts expecting more than 7
760 variables now works on x86-64. (reported by Christopher Laux)
761 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
763 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
764 as the property-list of a symbol.
765 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
766 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
767 situations requested, are once again file-compileable. (reported
770 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
771 * MOP improvement: support for user-defined subclasses of
772 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
773 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
774 the expansion of DEFMETHOD, is responsible for generating a form
775 which creates a list of specializers when evaluated. Additional
776 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
777 debugging and introspective support.
778 * minor incompatible change: the (unsupported) spinlock interface
779 has changed: free spinlock now has the value NIL, and a held spinlock
780 has the owning thread as its value.
781 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
782 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
784 * enhancement: name of a socket-stream is now "a socket" instead of
786 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
787 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
788 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
789 for generic functions. (Thanks to Tobias C. Rittweiler)
790 * optimization: bignum printing speed has been improved by 20-40%
791 (depending on the bignum size.)
792 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
794 * bug fix: the cache used by the CLOS to store precomputed effective
795 methods, slot offsets, and constant return values is now thread and
797 * bug fix: generic function dispatch function updating is now thread
798 and interrupt safe (in the sense that the known issues have been
800 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
801 * bug fix: interning EQL-specializers is now thread and interrupt safe.
802 * bug fix: asdf systems with dependencies to the SB-POSIX or
803 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
804 * bug fix: interrupt safety of applicable method computation has been
807 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
808 * new contrib: sb-cover, an experimental code coverage tool, is included
810 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
811 significantly faster.
812 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
813 produce more efficient code on x86-64 if the compiler can determine
814 that (+ INDEX <constant>) does not require a bounds check and FOO
815 has an element type at least 8 bits wide.
816 * enhancement: a new, experimental synchronous timeout facility is
817 provided. Refer to SB-SYS:WITH-DEADLINE for details.
818 * enhancement: when a symbol name conflict error arises, the
819 conflicting symbols are always printed with a package prefix.
820 (thanks to Kevin Reid)
821 * enhancement: stepping is now once again supported on the SPARC and
822 MIPS platforms. (It is also now more likely to work on CheneyGC
824 * enhancement: sb-sprof can now also track and report accurate call
826 * bug fixes: the treatment of non-standard subclasses of
827 SB-MOP:SPECIALIZER is more correct.
828 * incompatible change: PURIFY no longer copies the data from the
829 dynamic space into the static and read-only spaces on platforms
830 that use the generational garbage collector
831 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
833 * bug fix: GC race condition occasionally resulting in crashes with
834 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
836 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
838 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
839 a STYLE-WARNING to be signalled (regression from 1.0.4.)
840 * bug fix: an asynchronous interrupt could previously leave the
841 system running with GC inhibited.
842 * bug fix: a DECLARE form evaluated at top-level now causes an error
843 rather than silently (or verbosely) returning NIL.
844 * bug fix: trying to dissassemble functions compiled at high DEBUG could
845 result in a error being signalled due to source form lookup errors.
846 (reported by Peter Graves)
848 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
849 * incompatible change: removed writer methods for host-ent-name,
850 host-ent-addresses -- changing the values did not update the DNS
852 * minor incompatible change: changed experimental JOIN-THREAD interface
853 * documentation: the manual now lists reader and writer methods
854 in class slot documentation sections. (thanks to Richard M Kreuter)
855 * documentation: unwinding from asyncronous events has been
856 documented as unsafe.
857 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
858 in multithreaded application code.
859 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
860 platforms. (thanks to James Anderson for the optimization hint)
861 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
863 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
864 variants no longer cons.
865 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
866 their NOT- variants no longer cons.
867 * optimization: EQUAL hash tables no longer use SXHASH for objects
868 of all data types, but instead use an EQL hash for types for which
869 EQUAL is the same as EQL.
870 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
871 are significantly faster.
872 * optimization: new STRING-OUTPUT-STREAM implementation is much
873 faster for large outputs and conses 30% less on average.
874 * enhancement: XREF information is now collected for references made
875 to global variables using SYMBOL-VALUE and a constant argument.
876 * enhancement: SIGINT now causes a specific condition
877 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
878 * bug fix: FILE-POSITION used to signal an error in some cases where
879 ANSI requires it to return NIL.
880 * bug fix: ADJUST-ARRAY is now interrupt-safe.
881 * bug fix: adding and removing fd-handlers is now interrupt-safe.
882 * bug fix: inlined calls to C now ensure 16byte stack alignment on
884 * bug fix: bad type declaration in the CLOS implementation has
885 been fixed. (reported by James Anderson)
886 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
887 (thanks to Lutz Euler)
888 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
889 required by the CLHS. (reported by Samium Gromoff)
890 * bug fix: dead unbound variable references now signal an error.
891 (reported by Marco Monteiro)
892 * bug fix: / with an unused value was being deleted in safe code.
893 (thanks to Marco Monteiro and Kevin Reid)
894 * bug fix: number of characters that can be written onto a single
895 line in a file is unlimited.
896 * bug fix: some GC deadlocks caused by asynchronous interrupts have
897 been fixed by inhibiting interrupts for when GC is disabled.
898 * bug fix: some interrupt safety issues with GETHASH, (SETF
899 GETHASH), CLRHASH and REMHASH have been fixed.
900 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
901 specifier no longer causes infinite recursion.
902 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
903 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
904 * bug fix: an &environment argument with the correct variable information
905 is passed to macros that are expanded during byte compilation.
906 (reported by Samium Gromoff)
907 * bug fix: a logic error was causing the hash function for bignums to
908 have excessive amounts of collisions. (reported by Faré Rideau)
909 * bug fix: modifying the contents of an array could change the return
910 value of SXHASH on that array, which is only allowed for strings
911 and bit vectors. (bug introduced in 0.9.16)
912 * improvement: the x86-64/darwin port now passes all tests (except
913 for the debugger tests) but should still be considered
914 experimental until this is fixed.
915 * improvement: a style-warning is signaled for CASE (etc) clauses with
916 duplicate keys. (thanks to Kevin Reid)
917 * improvement: macos/x86 and macos/x86-64 now use mach exception
918 handlers for dealing with illegal instructions (for trapping and
919 error handling) and memory protection violations (for GC).
921 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
922 * new platform: experimental support for x86-64/darwin (MacOS).
923 * incompatible change: the thread-safe (on most platforms) getaddrinfo
924 and getnameinfo sockets functions are used instead of gethostbyaddr
925 and gethostbyname, on platforms where the newer functions are available.
926 As a result, the ALIASES field of HOST-ENT will always be NIL on these
928 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
929 don't print the startup banner, but behave as if --noinform was passed
930 as a command line argument. (thanks to Kevin Reid)
931 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
932 * optimization: code using alien values with undeclared types is much faster.
933 * optimization: the compiler is now able to open code SEARCH in more cases.
934 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
935 * bug fix: using standardized COMMON-LISP special variables as loop
936 variables no longer signals bogus package lock violations. (reported
938 * bug fix: declaring local loop variables to be of a range-limited type
939 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
940 (reported by Andras Simon)
941 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
942 bugs remain on x86-64.)
943 * bug fix: the #= and ## reader macros now interact reasonably with
944 funcallable instances.
945 * bug fix: type-checks for function arguments were compiled using the
946 compiler policy settings of the wrong lexical environment (in 1.0.2
948 * bug fix: SHADOW accepts characters as string designators, as required
949 by the spec (thanks to Eric Marsden)
950 * bug fix: fixed GC safety issues when foreign functions are called with
951 non-base strings as arguments
952 * bug fix: more consistent error output for fatal-compiler-warnings, like
954 * bug fix: functions with proper names were showing up as NIL in
955 backtraces (reported by Edi Weitz, regression in 1.0.2)
957 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
958 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
959 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
960 produce more efficient code on the x86 if the compiler can determine
961 that (+ INDEX <constant>) does not require a bounds check and FOO
962 has an element type at least 8 bits wide.
963 * bug fix: references to undefined variables are handled the same way
964 in toplevel forms as in the normal compiler
965 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
967 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
968 (thanks to Jon Buller)
969 * improvement: faster compilation times for complex functions
970 * improvement: added readlink support to SB-POSIX (thanks to Richard
973 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
974 * improvement: experimental support for mach exception handling on
975 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
977 * improvement: support for GBK external format.
978 (thanks to Chun Tian (binghe))
979 * improvement: the debugger now displays variables that have been closed
980 over, in code compiled with (DEBUG 2) or higher
981 * improvement: support for executable cores on NetBSD (thanks to
983 * new feature: added a RESTART-FRAME debugger command
984 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
985 be used to provide an implementation for FILE-POSITION on Gray streams
986 (thanks to Eric Marsden)
987 * new feature: add syslog, openlog and closelog support to SB-POSIX
988 (thanks to Richard Kreuter)
989 * optimization: the function call overhead in code compiled with
990 a high DEBUG optimization setting is significantly
991 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
992 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
993 (thanks to Tony Martinez)
994 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
995 evaluated once (reported by Kevin Reid)
996 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
997 works again (thanks to Kilian Sprotte)
998 * bug fix: an error is signaled for tagbodies with duplicate tags
999 (thanks to Stephen Wilson)
1000 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1001 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1002 stack frames from alien callbacks.
1003 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1004 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1005 65k pages (thanks to David Woodhouse)
1006 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1008 changes in sbcl-1.0.1 relative to sbcl-1.0:
1009 * new platform: FreeBSD/x86-64, including support for threading.
1010 * new feature: the compiler stores cross-referencing information
1011 about function calls (who-calls), macroexpansion (who-macroexpands)
1012 and special variables (who-binds, who-sets, who-references) for code
1013 compiled with (< SPACE 3). This information is available through the
1014 sb-introspect contrib.
1015 * new feature: users may subclass SEQUENCE, and have instances of
1016 these classes interoperate with standard Common Lisp functions if
1017 a number of methods are defined. (This feature is experimental
1018 and the interface subject to change based on feedback from SBCL
1019 users and the general community)
1020 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1021 x86/x86-64, rather than the previous fixed depth of 8
1022 * improvement: another pthread back-end of mutex "pthread-futex".
1023 * bug fix: non-ascii command-line arguments are processed correctly
1024 (thanks to Yaroslav Kavenchuk)
1025 * bug fix: non-required arguments were not passed correctly when a method
1026 defined using DEFMETHOD was called from a mop-generated method using
1027 CALL-NEXT-METHOD (reported by Pascal Costanza)
1028 * bug fix: recursion is now permitted in accessors through
1029 SLOT-UNBOUND. (reported by Pascal Costanza)
1030 * bug fix: an error was signaled at startup if the HOME environment
1031 variable was defined, but had an empty value (reported by Peter Van Eynde)
1032 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1033 signal a PROGRAM-ERROR, not a BUG.
1034 * bug fix: SB-POSIX:READDIR works when built with large file support.
1035 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1037 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1038 for better automatic indentation support. (thanks to Matt Pillsbury)
1039 * optimization: loading generic functions no longer takes O(n^2) time,
1040 proportional to the amount of methods in the generic function
1041 (reported by Todd Sabin and Jeremy Brown)
1042 * optimization: the FIND and POSITION family of sequence functions
1043 are significantly faster on arrays whose element types have been
1045 * improvements to the Windows port:
1046 ** Intermittent heap corruption problems have been fixed. (thanks
1047 to Alastair Bridgewater)
1048 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1050 ** Lisp is able to unwind foreign exception frames from alien
1051 callbacks. (thanks to Alastair Bridgewater)
1053 changes in sbcl-1.0 relative to sbcl-0.9.18:
1054 * improvement: experimental support for threading on FreeBSD/x86.
1055 (thanks to NIIMI Satoshi)
1056 * improvement: runtime option --dynamic-space-size can be used
1057 to set the size of the dynamic space reserved on startup.
1058 * improvement: floating point modes in effect are now saved in
1059 core, and restored on startup.
1060 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1061 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1062 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1063 threads are not running after *SAVE-HOOKS* have run.
1064 * improvement: writes to CLOS instance slots are type-checked in code
1065 compiled with (SAFETY 3)
1066 * improvement: floating-point exception handling on FreeBSD (thanks to
1068 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1069 (thanks to Zach Beane)
1070 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1072 * improvement: added support for the Shift-JIS external format.
1073 (contributed by NIIMI Satoshi)
1074 * improvement: callbacks are supported on Linux/PPC. (thanks to
1076 * bug fix: compiler bug triggered by a (non-standard) VALUES
1077 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1078 * bug fix: file compiler no longer confuses validated and already
1079 dumped structurres. (reported by Kaersten Poeck)
1080 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1081 fill-pointer signals a type-error as required. (thanks to
1083 * bug fix: disassemly of funcallable instances works.
1084 * bug fix: single stepping on PPC.
1085 * bug fix: fix thread-safety problems in the type system (generally
1086 manifesting as nonsensical errors like "STRING is a bad type specifier
1087 for sequences" or "The value 1 is not of type FIXNUM")
1088 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1089 (reported by Josip Gracin)
1090 * bug fix: an error is signaled for attempts to displace arrays with
1091 incompatible element types (thanks to Mario Mommer)
1092 * bug fix: more correct handling of wide characters in debug info
1093 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1094 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1095 and don't cause extra consing
1096 * optimization: MAP and MAP-INTO are significantly faster on vectors
1097 whose elements types have been declared.
1098 * Improvements to SB-SPROF:
1099 ** Support for allocation profiling
1100 ** Reduced profiling overhead, especially for long profiling runs
1101 * Improvements to the Windows port:
1102 ** floating point exceptions are now reported correctly.
1103 ** stack exhaustion detection works partially.
1104 ** more accurate GET-INTERNAL-REAL-TIME.
1105 ** better RUN-PROGRAM behaviour in case of errors in the child
1107 ** PROBE-FILE now simplifies pathnames correctly.
1108 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1109 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1110 1st 1970 (although time timezone data will be unreliable).
1111 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1113 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1114 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1115 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1117 * bug fix: two potential GC deadlocks affecting threaded builds.
1118 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1119 returns T (reported by Anton Kazennikov)
1120 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1121 with non-variable places
1122 * bug fix: remove a race condition in the setting of
1123 funcallable-instance functions, this should make threaded CLOS
1124 code more stable against memory faults.
1125 * bug fix: corruption of specials when unbinding is interrupted by an
1126 asynchronous unwind (reported by Hannu Koivisto)
1127 * improvement: the debugger will now also display local variables that
1128 are only used once, for code compiled with a DEBUG optimization quality
1131 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1132 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1133 * incompatible change: External-format support for FFI calls. The
1134 SB-ALIEN:C-STRING no longer implies an ASCII
1135 external-format. Instead the string is subject to external-format
1136 conversion. Additionally return values of type SB-ALIEN:C-STRING
1137 are by default of type (SIMPLE-ARRAY CHARACTER), not
1138 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1139 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1140 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1141 * incompatible change: SB-EXT package no longer contains the
1142 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1143 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1145 * incompatible change: the single-stepper is no longer available
1146 on Alpha, Mips and Sparc platforms.
1147 * minor incompatible change: the direct superclasses of
1148 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1149 not (STANDARD-OBJECT FUNCTION). This makes the
1150 class-precedence-lists of GENERIC-FUNCTION and
1151 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1153 * minor incompatible change: the default stream external format on
1154 non-unicode SBCL is no longer detected from the locale, but is always
1156 * new feature: Add a version of evaluator that uses an interpreter instead
1157 of the compiler. EVAL still uses the compiler by default, to switch it
1158 to use the interpreter, set the value of the variable
1159 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1160 * minor incompatible change: the single-stepper REPL has been merged
1161 with the normal debugger (see the "Stepping" heading of the debugger help
1162 for more details). The debugger command STEP will no longer switch
1163 to the single-stepper REPL.
1164 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1165 for a type now works.
1166 * bug fix: loading of default sysinit file works. (thanks to Leonid
1168 * bug fix: better detection of circularities in the file-compiler.
1169 (reported by Marco Monteiro)
1170 * bug fix: the CL pathname functions now work with files that have
1171 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1172 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1173 systems with Unix98 pty semantics.
1174 * bug fix: ASDF-INSTALL will now work with bsd tar.
1175 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1177 * bug fix: timers expiring in dead threads no longer cause a
1178 type-error (reported by Paul "Nonny Mouse").
1179 * bug fix: thanks to more lightweight single-stepper instrumentation,
1180 code compiled with (DEBUG 3) will compile and execute significantly faster,
1181 and will have more accurate type-inferencing than before
1182 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1183 whose bindings are modified
1184 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1185 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1186 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1187 CL:SOFTWARE-VERSION with proper version
1189 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1190 * feature: implemented the READER-METHOD-CLASS and
1191 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1192 as specified by AMOP.
1193 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1195 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1196 (thanks to Lutz Euler)
1197 * optimization: hashing of general arrays and vectors has been
1198 improved. (reported by Any Fingerhut)
1199 * enhancement: SB-INTROSPECT is now able to find definitions of
1200 profiled functions. (thanks to Troels Henriksen)
1201 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1202 as well, allowing compiler-macros for SETF-functions to expand.
1203 * enhancement: step-instrumentation no longer wraps known
1204 single-value functions with multiple-value context, allowing
1205 better type inference.
1206 * fixed bug #337: use of MAKE-METHOD in method combination now works
1207 even in the presence of user-defined method classes. (reported by
1208 Bruno Haible and Pascal Costanza)
1209 * fixed bug #339(c): if there are applicable methods not part of any
1210 long-form method-combination group, call INVALID-METHOD-ERROR.
1211 (reported by Bruno Haible)
1212 * fixed bug #361: the :FUNCTION initarg in the protocol for
1213 initialization of methods can now be used to override
1214 internally-produced optimized functions. (reported by Bruno
1216 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1217 system-provided lambda expression no longer cause warnings about
1218 unbound #:|pv-table| symbols.
1219 * bug fix: improved the handling of type declarations and the
1220 detection of violations for keyword arguments with non-constant
1222 * bug fix: potentially erronous calls to PATHNAME and
1223 MERGE-PATHNAMES were being flushed in some cases.
1224 (reported by Richard Kreuter)
1225 * bug fix: compiled calls to TYPEP were mishandling obsolete
1226 instances. (reported by James Bielman and Attila Lendvai)
1227 * bug fix: format strings with ~> without matching ~< no longer
1228 trigger an AVER, but signal an understandable error instead.
1229 (reported by Antonio Martinez)
1230 * bug fix: specifying an output-file without a pathname-type for
1231 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1232 of input-file instead of "fasl". (reported by Robert Dodier)
1233 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1234 (reported by James Y Knight).
1235 * bug fix: compiler-macros-function did not consider the environment
1236 argument for shadowing by local functions.
1237 * bug fix: compiler-macros expansion was inhibited by local INLINE
1239 * bug fix: inline expansions of known functions were subject to
1240 step-instrumentation in high debug policies, leading to problems
1241 with type-inference.
1242 * bug fix: compiler failed to differentiate between different CONS
1243 types in some cases.
1244 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1245 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1246 * bug fix: #368: incorrect use of expressed vs. upgraded array
1248 * bug fix: #306a: more precise unions of array types.
1249 * thread-safety improvements:
1250 ** CONDITION-WAIT could return early on Linux, if the thread was
1251 interrupted and subsequently continued with SIGCONT.
1252 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1254 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1255 * added support for the ucs-2 external format. (contributed by Ivan
1257 * minor incompatible change: pretty printing of objects of type
1258 (cons symbol) is, in the default pprint-dispatch-table, now
1259 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1261 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1262 called later in a class's lifetime, possibly as late as when the
1263 first instance of the class is created. Previously,
1264 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1265 class became finalizeable.
1266 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1267 for multibyte external-format streams. (thanks to "vbzoli")
1268 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1269 with :ALLOCATION :CLASS inherited from superclasses of the
1271 * fixed bug: anonymous classes can now be created using the :NAME
1272 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1273 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1274 * fixed bug: core-files saved with :EXECUTABLE T can again be
1275 executed when SBCL_HOME isn't set. (reported by James Knight)
1276 * fixed bug: toplevel LOCALLY forms with declarations could
1277 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1278 * fixed bug: printing from several different threads using different
1279 values of *print-case* could cause invalid output, due to
1280 some internal special variables of the printer not being bound
1281 thread-locally (reported by Max Mikhanosha)
1282 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1283 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1284 (reported by Pascal Costanza)
1285 * fixed bug: FINALIZE-INHERITANCE is called from
1286 REINITIALIZE-INSTANCE on classes when the class has previously
1287 been finalized, as required by AMOP.
1288 * minor code generation optimizations:
1289 ** better register allocation in CLOS dispatching functions
1290 ** overflow detection when coercing signed bytes to fixnums on x86-64
1291 ** is now implemented with one IMUL instruction instead of three shifts
1292 ** more efficient bit-vector access on x86 and x86-64
1293 ** more efficient access to raw structure slots on x86 and x86-64
1294 * fixed some bugs revealed by Paul Dietz' test suite:
1295 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1296 return its argument.
1298 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1299 * feature: thread support on Solaris/x86, and experimental thread support
1301 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1303 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1304 default method for SLOT-UNBOUND.
1305 * minor incompatible change: prevent the user from specializing the
1306 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1307 somewhat counter to the intent of the protocol, I (CSR) think, and
1308 additionally it just doesn't work in SBCL as currently
1309 implemented, thanks to optimizations (that are always valid for
1310 the other three SLOT-VALUEish functions, but not for the setter).
1311 * minor incompatible change: the :SB-LDB feature is now enabled by
1312 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1313 the low-level debugger.
1314 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1315 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1316 down to an SB-SYS:FD-STREAM, allowing direct communication in
1317 more cases. Temporary files and pipes are still used as a fallback
1319 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1320 on the non-reentrant C functions localtime(3) and gmtime(3).
1321 * bug fix: global optimization policy was not visible in LOCALLY and
1323 * bug fix: class objects can be used as specializers in methods.
1324 (reported by Pascal Costanza)
1325 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1326 with a type error. (reported by blitz_ on #lisp)
1327 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1328 failed with a type error. (reported by Pascal Bourguignon)
1329 * bug fix: merging pathnames against defaults with :DIRECTORY
1330 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1331 (reported by James Y Knight)
1332 * bug fix: saving large (>2GB) cores on x86-64 now works
1333 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1334 constant index and a (simple-array (signed-byte 32)) array
1335 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1336 error (patch by Robert J. Macomber)
1337 * feature: TIME now displays the amount of run-time spent in GC
1338 * bug fix: The debugger now does a better job of respecting
1339 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1340 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1341 workaround for bug 403.)
1342 * bug fix: floating point exception handling now works on FreeBSD
1343 (thanks to NIIMI Satoshi)
1344 * fixed some bugs revealed by Paul Dietz' test suite:
1345 ** MISC.641: LET-conversion were not supposed to work in late
1347 * improvements to the Win32/x86 port:
1348 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1349 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1351 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1352 * new feature: source path information is generated for macro-expansion
1353 errors for use in IDE's like Slime (thanks to Helmut Eller)
1354 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1355 * bug fix: compiler does not loop forever on an invalid type in
1357 * improvement: compilation of most CLOS applications is significantly
1359 * optimization: added a limited bytecode compiler for simple toplevel
1360 forms, speeding up compilation and FASL loading
1361 * bug fix: the statistical profiler now properly distinguishes anonymous
1364 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1365 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1366 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1367 into subclasses of the finalized class. Now user calls to
1368 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1369 system return before any subclasses are finalized.
1370 * minor incompatible change: The reader no longer ignores errors
1371 regarding non-existent packages in #+ and #- feature tests.
1372 * new feature: command line options --no-sysinit, --no-userinit to
1373 inhibit loading the corresponding init files
1374 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1375 for sending data through UDP sockets (thanks to François-René Rideau)
1376 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1377 error is signalled instead (thanks to François-René Rideau)
1378 * minor incompatible change: Error signalling behaviour of lexical
1379 operations violating package locks has changed slightly. Refer to
1380 documentation on package locks for details.
1381 * enhancement: EVAL can process IF-expressions without resorting to the
1383 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1384 constant-folded properly due to missing out-of-line functions.
1385 (reported by Mika Pihlajamäki)
1386 * bug fix: LISTEN sometimes returned T even in cases where no data was
1387 immediately available from the stream
1388 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1389 were reversed. (reported by Levente Mészáros)
1390 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1391 when given a vector displaced to an adjustable array. (reported
1393 * bug fix: derivation of float boundaries from numbers outside the
1394 appropriate float range (reported by John Wiseman)
1395 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1397 * bug fix: precomputing cache entries for generic functions with
1398 some subclasses of specializers as yet invalid does not attempt to
1399 fill a cache line with a negative offset. (reported by Levente
1401 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1402 allow condition class objects as arguments to DOCUMENTATION and
1403 (SETF DOCUMENTATION); only find and set documentation for
1404 structure names for the STRUCTURE doc-type. (suggested by Gary
1406 * improvements to the Win32/x86 port:
1407 ** (user-homedir-pathname) and default initialization file
1408 locations now know about the user's "Documents and Settings"
1409 directory (thanks to Yaroslav Kavenchuk)
1410 ** run-program is implemented (thanks to Mike Thomas)
1411 ** sockets support (thanks to Timothy Ritchey)
1412 ** better backtrace support (thanks to Alastair Bridgewater)
1413 ** sb-grovel supported
1414 ** asdf-install and sb-posix work somewhat
1415 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1416 * improvements to the Solaris/x86 port:
1417 ** works on Solaris 11/Solaris Express
1418 ** floating-point exception handling support
1419 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1420 * fixed some bugs revealed by Paul Dietz' test suite:
1421 ** REMOVE-METHOD returns its generic function argument even when
1422 the method is not one of the generic functions' methods.
1423 ** objects declared as MEMBER types can be admissible arguments to
1424 structure accessors.
1425 ** printing characters should simply be printed by the FORMAT ~:C
1427 ** compiler failure when compiling functions with hairy constant
1428 defaults for optional parameters.
1429 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1430 function, which is already optimized.
1432 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1433 * new platform: experimental support for SBCL x86/Darwin, including
1434 MacOS X 10.4.5 on Intel.
1435 * new feature: Unicode character names are now known to the system
1436 (through CHAR-NAME and NAME-CHAR).
1437 * new feature: the filesystem location of SBCL's core file is
1438 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1439 * minor incompatible change: the contrib modules SB-POSIX and
1440 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1441 this change is to make it easier to distribute
1442 location-independent binaries.
1443 * bug fix: as implied by AMOP, standardized classes no longer have
1444 slots named by external symbols of public packages. (reported by
1446 * optimization: calling functions via constant symbols -- as in
1447 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1448 via the function object as in (FUNCALL #'FOO).
1449 * optimization: on x86 and x86-64, the calling convention for the
1450 case of dealing with an unknown number of values has been altered
1451 to be friendlier to the prediction heuristics implemented,
1452 particularly with reference to CALL and RET pairing. (thanks to
1453 Alastair Bridgewater)
1454 * optimization: on x86, the code for access to thread-local symbol
1455 values and binding/unbinding of thread-local symbols is smaller.
1456 (thanks to Alastair Bridgewater)
1457 * enhancement: CONSTANTP is now able to determine constantness of
1458 more complex forms, including calls to constant-foldable standardized
1459 functions and some special forms beyond QUOTE.
1460 * fixed bug: occasional GC crashes on Solaris/x86
1461 * optimization: x86-64 supports stack allocation of results of simple
1462 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1463 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1464 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1465 (thanks to James Knight)
1466 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1467 by the standard (thanks to Stephen Compall)
1469 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1470 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1471 be used for bundling the runtime and the core file into one
1472 executable binary. This feature is not currently supported on all SBCL
1473 platforms. (thanks to James Bielman and NIIMI Satoshi)
1474 * new feature: a generational or ephemeral garbage collector is now
1475 the default on the PowerPC platform (both Linux and Darwin). The
1476 old Cheney (stop and copy) collector is a build-time option.
1477 (thanks to Cyrus Harmon, after Raymond Toy)
1478 * minor incompatible change: the method by which SBCL finds its
1479 contributed modules has changed; it no longer relies on symbolic
1480 links from an $SBCL_HOME/systems directory, but searches directly
1481 in the subdirectories of $SBCL_HOME.
1482 * enhancement: the dynamic heap size on the Linux/PPC platform is
1483 markedly larger, even using the older Cheney garbage collector.
1484 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1485 certain complicated string types. (reported by Gary King)
1486 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1487 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1488 * fixed bug: DOCUMENTATION on structures no longer signals an
1489 error if no structure type of the right name exists. (reported by
1491 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1492 applicable non-standard primary or :AROUND method on
1493 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1494 no longer cause unbound variable errors. (reported by Kevin Reid)
1495 * fixed bug: metacircle resolution in cases where methods have slots
1496 added before the slots from STANDARD-METHOD. (reported by Jean
1498 * fixed bug: the Power PC assembly code for calling into lisp
1499 sometimes computed its return address wrongly (depending on the
1500 15th bit of the address, fixed at link time). This used to
1501 manifest itself in a segmentation violation while building PCL.
1502 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1503 many others over the years)
1504 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1505 the stack pointer (treated as a signed integer) is negative.
1506 (thanks to Peter van Eynde)
1508 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1509 * new platform: experimental support for the Windows operating
1510 system has been added. (thanks to Alastair Bridgewater)
1511 * fixed several bugs in and robustified the PPC FFI (including
1512 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1513 * bug fix: allow non-simple string symbol names (reported by Paul
1515 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1517 * bug fix: saving a core corrupted callbacks on x86/x86-64
1518 * bug fix: closed a loophole in metacircularity detection and
1519 grounding in the PCL implementation of CLOS.
1520 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1521 (reported by tomppa on #lisp)
1522 * bug fix: clear the direction flag on Lisp -> C transitions, as
1523 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1524 (reported by Andrej Grozin and Hendrik Maryns)
1525 * optimization: major improvements to GC efficiency on GENCGC platforms
1526 * optimization: faster implementation of EQUAL
1527 * optimization: emit more efficient opcodes for some common
1528 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1529 * optimization: several other minor code-generation improvements on x86-64
1530 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1532 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1533 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1534 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1535 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1536 by ANSI as a generic function, and for consistency (SETF
1537 GENERIC-FUNCTION-NAME) is treated likewise.
1538 * fixed bug #233.b: make constraint propagation notice when a variable
1539 value is changed after it is referenced but before it is used
1540 * fixed bug #296: no more arbitrary behaviour from filenames with
1541 odd characters as --load arguments. (reported by Adam Warner)
1542 * fixed bug #390: :CHARACTER-SET pathname components now work as
1543 expected. (reported by Tim Daly Jr)
1544 * fixed bug #391: complicated :TYPE intersections in slot
1545 definitions no longer cause an error in PCL internals.
1546 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1547 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1548 returning the number of octets which would be written to the
1549 file-stream. (thanks to Robert J. Macomber)
1550 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1551 arguments to the internal stream functions. (thanks to David
1553 * bug fix: stack exhaustion is now handled on the x86/SunOS
1554 platform. (thanks to Daisuke Homma)
1555 * bug fix: more accurate ROOM results on GENCGC platforms
1556 * optimization: improved type inference for arithmetic-for
1557 index variables in LOOP
1558 * optimization: faster floating-point SQRT on x86-64
1559 * fixed some bugs revealed by Paul Dietz' test suite:
1560 ** DOCUMENTATION returns NIL instead of "" for method combinations
1561 that don't have a docstring
1563 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1564 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1565 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1566 therefore are not customizeable by user code (as seems to be at
1567 least permitted and maybe required by AMOP). As a consolation,
1568 however, the SBCL implementation of these functions now calls
1569 REINITIALIZE-INSTANCE as specified by AMOP.
1570 * bug fix: slot-definition documentation is propagated as per ANSI
1571 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1572 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1573 argument, as do eslotd initialization methods. (from Pascal
1574 Costanza's "Closer" project)
1575 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1576 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1578 * bug fix: it is now possible to have more than one subclass of
1579 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1580 (reported by Bruno Haible, Pascal Costanza and others)
1581 * bug fix: the dependent update protocol now works for generic
1582 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1583 and Pascal Costanza)
1584 * bug fix: condition-class instances corresponding to
1585 DEFINE-CONDITION forms are now created eagerly. (reported by
1586 Kalle Olavi Niemitalo on comp.lang.lisp)
1587 * bug fix: floating point printing is more accurate in some
1588 circumstances. (thanks to Simon Alexander)
1589 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1590 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1591 * bug fix: callbacks on OS X now preserve stack-alignment.
1592 (thanks to Cyrus Harmon)
1593 * enhancement: the x86-64 disassembler is much better at
1594 disassembling SSE instructions. (thanks to Lutz Euler)
1595 * enhancement: CHECK-TYPE on a variable now allows type-inference
1596 (thanks to Vincent Arkesteijn)
1597 * optimization: improved performance of EUC-JP external format.
1598 (thanks to NIIMI Satoshi)
1599 * optimization: performance improvements to IO on file streams of
1600 :ELEMENT-TYPE CHARACTER
1601 * optimization: much faster memory allocation on x86-64
1602 * optimization: faster garbage collections (latency and throughput)
1604 * optimization: faster bignum subtraction and division on x86 and x86-64
1605 (thanks to Lutz Euler)
1606 * optimization: more accurate type-inference for loops that use a
1607 floating point index variable or a negative step.
1609 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1610 * bug fix: add a workaround to SBCL looping infinitely at startup on
1611 Linux kernels with apparently buggy implementations of personality().
1612 (thanks to Svein Ove Aas)
1613 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1614 (thanks to David Lichteblau)
1615 * bug fix: local bindings shadow global symbol macros for
1616 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1617 * optimization: non-open coded uses of numeric comparison operators
1618 (e.g. >) no longer cons when called with more than one parameter
1619 on platforms supporting dynamic-extent allocation.
1620 * enhancement: saving cores with foreign code loaded is now supported
1621 on MIPS/Linux in addition to the previously supported platforms.
1622 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1623 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1624 * bug fix: division by zero in sb-sprof when no samples were collected
1625 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1626 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1627 (thanks to Alexander Kjeldaas)
1628 * new feature: ignoring the return values of destructive functions
1629 like NREVERSE signals a compile-time style-warning.
1630 (thanks to Kevin Reid)
1631 * new feature: the alignment of alien structure fields can be
1632 explicitly specified. (thanks to Cyrus Harmon)
1633 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1634 and dump core on SIGQUIT
1636 ** incompatible change: threads do not inherit values of specials
1637 from their parents (see manual)
1638 ** bug fix: threads stacks belonging to dead threads are freed by the
1639 next exiting thread, no need to gc to collect thread stacks anymore
1640 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1641 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1642 ** bug fix: dynamic variable and thread start related gc lossage
1643 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1645 * fixed some bugs revealed by Paul Dietz' test suite:
1646 ** SUBTYPEP is slightly more accurate on heinously complicated
1647 CONS types where some of the members have uncertain (in the
1648 NIL, NIL sense) type relationships to each other.
1650 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1651 no longer purified unless :PURIFY T is explicitly specified.
1652 ** Non-purified cores are significantly smaller than before
1654 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1655 * new feature: timers based on Zach Beane's excellent timer package
1656 * added support for the following external formats: koi8-u,
1657 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1658 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1659 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1660 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1661 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1662 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1663 * incompatible change: a threaded SBCL will no longer revert to
1664 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1665 * bug fix: interrupts are disabled until startup is complete; no
1666 more sigsegvs when receiving a signal to soon
1667 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1669 * bug fix: add a workaround for the memory randomization features in
1670 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1671 workaround will only be in effect on systems with the proc filesystem
1673 * bug fix: printing objects of type HASH-TABLE signals a
1674 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1676 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1677 have been running for over 50 days. (reported by Gilbert Baumann)
1678 * bug fix: the logic for getting names of functions gets less
1679 confused when confronded with alternate-metaclass
1680 funcallable-instances. (reported by Cyrus Harmon)
1681 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1682 consistent, even on internal alternate-metaclass objects.
1683 * bug fix: flush closure information collected by physical
1684 environment analysis prepass before the main pass. (bug reported
1686 * bug fix: compiler pack phase does not modify a hashtable, which is
1687 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1688 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1689 may be expanded. (reported by Alexander <malishev> on c.l.l)
1690 * bug fix: no more style-warnings when compiling code using LAST
1691 under high-SPEED low-SPACE settings. (reported by David Wallin
1693 * fixed some incompatibilities between SBCL's MOP and the MOP
1695 ** the METAOBJECT class is now implemented;
1696 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1697 STANDARD-OBJECT, as required;
1698 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1699 now compatible (as required by VALIDATE-SUPERCLASS); there
1700 remains a consistency requirement over the presence or absence
1701 of the FUNCTION class in the superclass list of finalized
1702 classes; see the manual for more details;
1703 ** the :AROUND method for COMPUTE-SLOTS on
1704 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1705 requested slot ordering.
1707 ** bug fix: parent thread now can be gc'ed even with a live
1709 ** bug fix: binding a special with PROGV to no value is not
1710 the same as that symbol not having been bound (thanks to
1712 ** bug fix: binding specials is thread safe (thanks to
1714 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1715 and SB-SPROF do not die with 'no handler for signal XX in
1716 interrupt_handle_now(..)' anymore
1717 ** bug fix: WITH-TIMEOUT works with multiple running threads
1718 * fixed some bugs revealed by Paul Dietz' test suite:
1719 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1720 the :method-class keyword argument.
1722 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1723 * new port: the Solaris operating system on x86 processors is now
1724 mostly supported, though some rough edges in the environment
1725 remain. (thanks to Daisuke Homma)
1726 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1727 space for its heap. (thanks to Thiemo Seufer)
1728 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1729 closures. (thanks to Thiemo Seufer)
1730 * minor incompatible change: eof selects abort in the debugger.
1731 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1732 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1734 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1735 deprecated, and will go away in a future revision of SBCL.
1736 * minor incompatible change: GC-ON and GC-OFF are no longer
1737 implemented with a counter, it does not matter how many times gc
1738 is switched on or off
1739 * bug fix: discriminating functions for generic function classes
1740 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1741 make invalid assumptions about method precedence order. (reported
1743 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1744 platforms. (thanks to Thiemo Seufer)
1745 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1746 * bug fix: correct pathname printing with printer escaping is on.
1747 (thanks to Kevin Reid)
1748 * bug fix: complex VOP definitions in "user-space" no longer trigger
1749 package locks. (reported by Zach Beane)
1750 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1751 for funcallable-instance functions, and is no different from
1753 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1754 characters in the current readtable. (reported by Nicholas Neuss)
1755 * bug fix: SUBTYPEP on various CONS types returns more a more
1756 accurate acknowledgment of its certainty.
1757 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1758 lists in some cases. This partially fixes bug 384.
1759 * flush all standard streams before prompting in the REPL and the
1761 * bug fix: signal handling and triggering gc do not conflict
1762 directly anymore, in particular a high frequency sb-sprof does
1763 not prevent gc from running
1764 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1765 approximation for timezone and DST information between the
1766 universal time epoch and the smallest negative 32-bit time_t.
1767 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1768 year 1899 so long as the encoded time is non-negative.
1769 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1770 the correct answer for non-constant rotate amounts when performing
1771 an inline 32-bit rotation.
1773 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1774 there is only one thread in the session
1775 ** bug fix: memory leak for streams created in one thread and
1776 written to in another
1777 ** bug fix: lockup when compiled with gcc4
1778 ** bug fix: race that allows the gc to be triggered when gc is
1780 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1781 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1783 ** bug fix: finished threads are gc'ed properly
1784 * fixed some bugs revealed by Paul Dietz' test suite:
1785 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1786 has arguments with a different set of applicable methods from
1787 the orignal arguments.
1788 ** The type error thrown by MAP now has a correct expected-type
1790 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1791 name a compiled function.
1792 ** Three MISC tests where a large bignum was improperly coerced to
1793 a float that couldn't represent that bignum during type
1794 derivation were fixed.
1795 ** SUBTYPEP can now handle types involving the negation of a
1796 list-form FUNCTION type.
1797 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1798 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1799 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1801 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1802 * New feature: Experimental support for bivalent streams: streams
1803 opened with :element-type :default now allow character and binary
1804 (unsigned-byte 8) I/O
1805 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1806 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1808 * bug fix: no more highly sporadic "couldn't check whether ~S is
1809 readable" when reading a stream and an interrupt hits in the middle
1810 of a select system call
1811 * compiler better recognizes complex arrays (reported by Eduardo
1813 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1814 for variables on SBCL built with linkage-tables. (reported by Luis
1816 * various error reporting improvements.
1817 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1818 (Thanks to Thiemo Seufer)
1819 * bug fix: nested reader invokations work correctly
1820 * bug fix: it is possible to have simultaneous references to foreign
1821 code and foreign data with the same name.
1823 ** added x86-64 support
1824 ** incompatible change: the threading api now works with thread
1825 objects instead of thread ids
1826 ** bug fix: threads are protected from signals and interruption when
1827 starting up or going down
1828 ** bug fix: a race where an exiting thread could lose its stack to gc
1829 ** bug fix: don't halt on infinite error in threads if possible
1830 ** fixed numerous gc deadlocks introduced in the pthread merge
1831 ** bug fix: fixed thread safety issues in read and print
1832 ** bug fix: debugger doesn't hang on session lock if interrupted at
1833 an inappropriate moment
1834 ** bug fix: run-program is now thread safe(r)
1835 ** bug fix: inner with-recursive-lock no longer releases the mutex
1836 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1837 * fixed some bugs revealed by Paul Dietz' test suite:
1838 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1839 EXPECTED-TYPE slots filled.
1840 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1842 ** MAKE-CONDITION accepts classes as type-designators.
1843 ** COMPILE may never return NIL.
1844 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1845 range before calling Unix time functions
1847 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1848 * numerous signal handling fixes to increase stability
1849 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1850 * minor incompatible change: we now correctly canonize default
1851 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1852 as per the MOP, rather than the historical (INITARG INITFUNCTION
1853 INITFORM). (reported by Bruno Haible)
1854 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1855 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1856 for more information.
1857 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1858 pathname is a directory pathname.
1859 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1860 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1862 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1863 :METACLASS argument in addition to a class name. (reported by
1864 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1865 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1866 (reported by Bruno Haible; patch from Gerd Moellmann)
1867 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1869 * bug fix: more cleanups to the floating point exception handling on
1870 x86-64 (thanks to James Knight)
1871 * bug fix: the compiler does not try to constant fold calls of
1872 COERCE and BIT-* functions when they return freshly constructed
1873 objects. (reported by Nikodemus Siivola and Paul Dietz)
1874 * optimization: improved the MIPS versions of generic (in the
1875 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1876 * optimization: direct conversion of (unsigned-byte 32) to floats on
1877 the PowerPC platform.
1878 * optimization: structure instances with raw slots now use less
1879 memory, and probably show better memory locality. (thanks to
1881 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1882 are treated as requests for stack allocation on the x86-64,
1883 Alpha-32, PPC and SPARC platforms.
1884 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1885 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1886 (thanks to Tony Martinez)
1888 ** gcing a dead thread can no longer lead to lockups
1889 ** threads block signals until they are set up properly
1890 ** errno is no longer shared by threads
1891 ** interrupt-thread restores the eflags register on x86
1892 ** fixed some lockups due to gc/thread interaction
1893 * fixed some bugs revealed by Paul Dietz' test suite:
1894 ** invalid dotted lists no longer raise a read error when
1895 *READ-SUPPRESS* is T
1896 ** signal an error if a symbol that names a declaration is used
1897 as the name of a type, or vice versa
1898 ** allow using the (declare (typespec var*)) abbreviation for
1899 (declare (type typespec var*)) with all type specifiers
1900 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1901 ** always return NIL from PPRINT-POP when OBJECT is NIL
1902 ** don't signal errors when pretty-printing malformed LABELS,
1903 FLET or MACROLET forms
1904 ** declarations in a DOLIST body are also in scope for the
1906 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1908 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1911 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1912 * fixed cross-compiler leakages that prevented building a 32-bit
1913 target with a 64-bit host compiler.
1914 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1915 opened with :IF-EXISTS :OVERWRITE.
1916 * fixed bug 281: error for an invalid qualifier in a short-form method
1917 combination method is not signalled until the faulty method is called.
1918 * bug fix: iteration variable type inferrer failed to deal with open
1919 intervals. (reported by Alan Shields)
1920 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1921 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1922 or more runtime options were provided to the sbcl binary.
1923 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1924 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1925 * optimization: there's now a fast-path for fixnum arguments in the
1926 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1927 * optimization: the code generated on x86-64 is more compact thanks
1928 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1929 * bug fix: floating-point exception handling now partly works on
1930 x86-64. (Thanks to James Knight)
1931 * improvement to the MIPS backend from Thiemo Seufer: C-style
1932 64-bit long long arguments and return values to alien functions
1934 * fixed some bugs revealed by Paul Dietz' test suite:
1935 ** the type-error signalled from WARN has a filled-in DATUM slot.
1936 ** the type-error required when a stream is not associated with
1937 a file has the stream as its datum.
1938 ** type-errors on single-floats on x86-64 no longer have
1939 :INVALID-OBJECT as the datum
1940 ** the type-errors signalled for invalid function names now have
1941 a correct expected type
1942 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1943 for structures defined with a :TYPE. Documentation strings for
1944 typed structures are no longer immediately discarded
1945 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1946 broadcast streams and synonym streams. FILE-LENGTH now also works
1947 on broadcast streams.
1949 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1950 * incompatible change: the --noprogrammer option, deprecated since
1951 version 0.7.5, has been removed. Please use the equivalent
1952 --disable-debugger option instead.
1953 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1955 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1956 inoperational for a while now) has been completely removed.
1957 * null lexical environments are now printed as #<NULL-LEXENV>,
1958 significantly reducing the amount of clutter in typical backtraces.
1959 * documentation on weak pointers, finalization, and after GC hooks
1960 has been added to the manual.
1961 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1962 as other specialized array types, is much faster. SUBSEQ and
1963 COPY-SEQ on such arrays have also been sped up.
1964 * optimization: EQL is now more efficient when at least other argument
1965 is known to be of type (OR FIXNUM (NOT NUMBER)).
1966 * fixed bug: the runtime is now less vulnerable to changes in the
1967 size of the SBCL object on OS X, and virtual memory is reserved for
1968 all spaces that need to be at a fixed address.
1969 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1970 * fixed bug: finalizers and after GC hooks that cause consing are now
1972 * fixed bug: compiler error messages and summaries are now printed to
1973 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1974 * fixed inference of the upper bound of an iteration variable.
1975 (reported by Rajat Datta).
1976 * fixed bug 211e: calling local functions with duplicated constant
1977 keyword argument no longer causes a bogus style warning about an
1979 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1980 ftype declaration to be disregarded. (reported by Dave Roberts)
1981 * fixed bug 373: caused by erronous compilation of references to alien
1982 variables in the runtime on ppc/darwin.
1983 * fixed bug 376: CONJUGATE type deriver.
1984 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1985 (reported by Baughn on #lisp)
1986 * a cross-compiler bug on non-x86 platforms has been identified and
1987 fixed. (thanks to Bruno Haible)
1988 * improvements to the MIPS runtime code for increased stability.
1989 (thanks to Thiemo Seufer)
1990 * increased the maximimum compact environment size to allow
1991 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1992 * partial workaround for bug 135: don't name the function we're
1993 calling for hairy cases of EVAL, so as not to accumulate one environment
1994 entry per call to EVAL. (reported by Kevin Reid)
1995 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1996 * optimization: type testing for non-vector arrays should be faster.
1997 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1999 * bug fix: setting 31st element of a bit vector to zero did not work
2001 * bug fix: redefining a class definition which failed due to a
2002 previous accessor / function clash now works (but see BUGS entry
2003 #380 for more problems in this area). (thanks to Zach Beane)
2004 * the long form of DEFINE-METHOD-COMBINATION disables method group
2005 checking when given a single method group with pattern *. (thanks
2007 * on x86 compiler supports stack allocation of results of simple
2008 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2009 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2010 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2011 * fixed some bugs related to Unicode integration:
2012 ** the restarts for recovering from input and output encoding
2013 errors only appear when there is in fact such an error to
2015 * fixed some bugs revealed by Paul Dietz' test suite:
2016 ** MISC.549 and similar: late transformation of unsafe type
2017 assertions into derived types caused unexpected code
2019 ** SCALE-FLOAT type deriver is less wrong.
2020 ** type derivers for EXP, LOG and similar functions compute result
2021 types for complex arguments better.
2022 ** (MISC.563) CONJUGATE type deriver works for very restricted
2024 ** out-of-line type testers for character strings are available.
2025 ** EQUAL compiler transform understands specialness of objects
2027 ** accessing double-floats stored on the stack now works on x86-64.
2028 ** debugger internals could sometimes create invalid lispobjs,
2029 resulting in GC crashes.
2030 ** MISC.548: type check weakening can convert required type into
2032 ** initialization forms for bindings are not in scope of free special
2035 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2036 * incompatible change: thread support for non-NPTL systems has
2037 been removed - locking is buggy and unreliable. A threaded
2038 SBCL build will now warn at startup and refuse to create
2039 new threads, unless futex support is detected in the kernel
2040 * incompatible change: the top level REPL now has only an ABORT
2041 restart associated with it, not TOPLEVEL and ABORT as it used to.
2042 TOP and TOPLEVEL are now available as debugger commands for
2043 returning to the top level.
2044 * incompatible change: forms evaluated in the REPL now use the
2045 global optimization policy.
2046 * incompatible change: user- and system-initialization files are
2047 no longer processed with LOAD, but by READ and EVAL; hence the
2048 global optimization policy, startup package, readtable, etc,
2050 * The .fasl file format number has been incremented because of
2051 various incompatible changes.
2052 * internal entry point details and argument counts no longer appear
2053 in backtraces unless explicitly requested by setting
2054 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2055 * built-in and standard functions no longer have names like "top
2056 level local call to FOO".
2057 * fixed bug 32: functions defined in non-null lexical environments
2058 now have more legible printed representation
2059 * fixed bug 33: functions defined in non-null lexical environemnts
2060 are now more amenable to inspection by INSPECT.
2061 * workaround for bug 354: XEPs no longer appear in backtraces unless
2062 explicitly requested.
2063 * fixed bug: receiving the signal which results from attempting to
2064 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2065 SIGBUS on other *BSDs) on architectures where the C stack is also
2066 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2067 to debugger confusion or wild instability. (reported by Cheuksan
2069 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2070 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2071 (reported by Lutz Euler)
2072 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2073 compiled code. (reported by Paul Dietz)
2074 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2075 specialized parameter to a method to something that is not TYPEP
2076 the specializer is now possible.
2077 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2078 face of package deletion.
2079 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2080 pathname. (reported by David Tolpin on c.l.l)
2081 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2082 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2083 STRING-STREAM and FILE-STREAM, respectively.
2084 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2085 than previously; in addition, its test suite is now run on build.
2086 (thanks to Luke Gorrie)
2087 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2088 * optimization: added a immediate representation for single-floats
2090 * fixed some bugs revealed by Paul Dietz' test suite:
2091 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2092 ** attempting to create a package with a colliding nickname causes
2093 correctable errors to be signalled.
2094 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2095 ** several x86-64 backend bugs related to sign-extension of immediate
2098 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2099 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2100 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2102 * fixed loading of multiply forward-referenced layouts.
2103 (thanks to Cheuksan Wang)
2104 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2105 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2106 (see COMPILE-FILE documentation for details of :PRINT option)
2107 * fixed bugs 19 and 317: fixed-format floating point printing is
2108 more accurate. This also fixes a bug reported by Adam Warner
2109 related to the ~@F format directive.
2110 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2112 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2113 dispatch table if the from-char is a dispatch macro character.
2114 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2115 by the wordsize no longer ignore the last word. (reported by Lutz
2117 * fixed bug in type checking of dynamic-extent variables. (reported
2119 * optimization: sequence traversal functions use their freedom to
2120 coerce function designators to functions.
2121 * optimization: code with many calls to CLOS methods specialized on
2122 CLOS classes has had redundant type checks removed.
2123 * optimization: added declarations to speed up operations that access
2124 the internal character database (for example STRING-UPCASE)
2125 * optimization: comparison operations between floats and sufficiently small
2126 fixnums no longer create extra rationals
2127 * fixed some bugs related to Unicode integration:
2128 ** portions of multibyte characters at the end of buffers for
2129 character-based file input are correctly transferred to the
2130 start of the buffer at the next read.
2131 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2132 passing it through to OPEN.
2133 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2134 argument given to internal calls to OPEN.
2135 ** the built-in comment readers (introduced by character sequences
2136 ";" and "#|") are more forgiving to encoding errors; they will
2137 STYLE-WARN and then attempt to resync the stream at a character
2138 boundary. (thanks to Teemu Kalvas)
2139 * fixed some bugs in the x86-64 port:
2140 ** Negative short int return values from c-calls are sign-extended
2142 ** The stack is aligned to 16-bytes for c-calls, as required by
2143 the ABI. (thanks to Cheuksan Wang)
2144 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2145 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2146 for enums. (thanks to Vincent Arkesteijn)
2147 ** Multiple small optimizations and bugfixes for floating point
2149 * fixed some bugs revealed by Paul Dietz' test suite:
2150 ** Space, Tab, Linefeed, Return and Page have the invalid
2151 secondary constituent character trait.
2152 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2154 ** WITH-INPUT-FROM-STRING should only update the index place on
2156 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2157 works more reliably.
2158 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2159 with one-dimensional arrays with fill pointers.
2160 ** TYPE-OF failed on a complex with an integer realpart and a
2162 ** compiler failure during type inference for the code of form
2163 (IF (EQL X (THE ...)) ...) (MISC.535).
2165 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2166 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2167 platform. The port supports 61-bit fixnums, large memory spaces
2168 and reloading shared object files.
2169 * enhancement: saving cores with foreign code loaded is now
2170 supported on ppc/Darwin in addition to the previously supported
2172 * enhancement: the statistical profiler now walks deeper into the
2173 call stack for more meaningful call-graphs and accrued time
2174 reports (x86/x86-64 only). It also now reports time spent in
2176 * enhancement: it is now possible to trace most individual methods
2177 of a generic function in addition to tracing the generic function
2179 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2181 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2182 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2183 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2184 produces an error. (thanks to Vincent Arkesteijn)
2185 * bug fix: NAMESTRING on pathnames with :WILD components in their
2186 directories works correctly. (thanks to Artem V. Andreev)
2187 * fixed bug 125: compiler preserves identity of closures. (reported
2189 * bug fixed: functions with &REST arguments sometimes failed with
2190 "Undefined function" when compiled with (DEBUG 3). (reported by
2192 * bug fix: overflow during compiling of setting element of a bit
2193 vector with constant index and value. (reported by Timmy Douglas)
2194 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2195 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2196 * on x86 compiler partially supports stack allocation of dynamic-extent
2198 * GO and RETURN-FROM do not check the extent of their exit points
2199 when compiled with SAFETY 0.
2200 * fixed some bugs related to Unicode integration:
2201 ** encoding and decoding errors are now much more robustly
2202 handled; it should now be possible to recover even from invalid
2203 input or output to the terminal. (thanks to Teemu Kalvas)
2204 ** provided a first cut at implementing STRING-TO-OCTETS and
2205 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2206 ** altered the SB-MD5 contributed module slightly, changing the
2207 interface just enough for it to be supportable for builds where
2208 lisp characters are not eight bits.
2209 * fixed some bugs revealed by Paul Dietz' test suite:
2210 ** the FORMATTER-generated functions for ~V[ conditionals require
2211 the correct number of arguments.
2212 ** READ-FROM-STRING returns the mandated second value when applied
2213 to displaced strings.
2214 ** the #\Rubout and #\Backspace characters are treated as invalid
2215 constituent characters by the tokenizer.
2217 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2218 * new feature: reloading changed shared object files with
2219 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2220 * new feature: references to foreign variables and functions
2221 can now be compiled and loaded before the corresponding shared
2222 object file is loaded, as long as the foreign definitions are
2223 available at runtime.
2224 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2225 supported. (thanks to Dan Debertin)
2226 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2227 just keywords. (thanks to Vincent Arkesteijn)
2228 * fixed bug #331: structure-class instances corresponding to
2229 DEFSTRUCT forms are now created eagerly.
2230 * fixed bug #345: backtraces from calls to undefined functions work
2231 on x86 as well. Related bug #61 is now also partially fixed on x86
2232 (backtraces from throws to unknown catch tags.)
2233 * bug fix: lambda-list parsing is now stricter vrt. order and number
2234 of lambda-list keywords.
2235 * bug fix: as specified by AMOP, an error is signalled if a
2236 class-option appears multiple times in a DEFCLASS form. (reported
2238 * bug fix: RANDOM can be compiled when the compiler derives the type
2239 of its numeric argument as a disjoint set of small integers.
2240 (reported by Paul Dietz)
2241 * bug fix: starting a core saved with shared objects loaded when
2242 those objects are not available no longer causes threaded SBCL to
2243 hang. (reported by Sean Ross)
2244 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2246 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2247 argument, which must always be NIL. (reported by Kalle Niemitalo)
2248 * bug fix: printing 1.0d+23 no longer results in an error.
2249 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2250 * bug fix: structure slot setters preserve evaluation order. (thanks
2252 * fixed some bugs related to Unicode integration:
2253 ** RUN-PROGRAM can allow its child to take input from a Lisp
2254 stream. (reported by Stefan Scholl)
2255 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2256 locales. (reported by Ken Causey)
2257 * fixed some bugs revealed by Paul Dietz' test suite:
2258 ** INCF, DECF and REMF evaluate their place form as specified in
2260 ** FORMATTER expands ~{ ~} iteration directives with V or #
2261 parameters correctly.
2262 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2263 consequent uses no arguments correctly.
2264 ** the system has a partial understanding of the (COMPLEX RATIO)
2266 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2269 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2270 * new feature: a build-time option (controlled by the :SB-UNICODE
2271 keyword feature, enabled by default) for building the system with
2272 support for the entire 21-bit character space defined by the
2274 * new feature: the system now has rudimentary external-format
2275 support; the primary user-visible change at this time is that
2276 characters with the high bit set (such as lower-case-e-acute) will
2277 print correctly to a terminal in a UTF-8 environment.
2278 * minor incompatible change: BASE-CHAR no longer names a class;
2279 however, CHARACTER continues to do so, as required by ANSI.
2280 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2281 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2282 has been moved to the SB-EXT package (temporarily re-exported from
2284 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2285 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2287 * fixed bug #351: better error-handlind and reporting for malformed
2289 * fixed bug #350: bignum-printing is now more memory-efficient,
2290 allowing printing of very large bignums, eg. (expt 2 10000000).
2291 (reported by Bruno Haible)
2292 * fixed bug #302: better primitive-type selection for intersection
2294 * fixed bug #308: non-graphic characters now all have names, as
2295 required. (reported by Bruno Haible)
2296 * bug fix: redefining a class with different superclasses now correctly
2297 removes it from the direct-subclasses of its previous superclasses.
2298 (reported by David Morse)
2299 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2300 new value now works. (reported by Bruno Haible)
2301 * bug fix: correct canonicalization of multiple non-standard slot
2302 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2303 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2304 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2305 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2306 now exists, an signals an error.
2307 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2308 during macroexpansion for non-iteration variables as well. (reported
2309 by Bruno Haible for CMUCL)
2310 * bug fix: Cyclic structures and unprintable objects in compiler
2311 messages no longer cause errors. (reported by Bruno Haible)
2312 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2313 and READ-FROM-STRING all now return a primary value of NIL if
2314 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2315 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2316 (reported by Bruno Haible for CMUCL)
2317 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2318 do not designate a condition. (reported by Bruno Haible for
2320 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2321 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2322 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2323 permitting resolution in favour of any of the conflicting symbols.
2324 (reported by Bruno Haible for CMUCL)
2325 * bug fix: EQUAL compiler optimizations is less aggressive on
2326 strings which can potentially compare true despite having distinct
2327 specialized array element types.
2328 * bug fix: unit enumerations can be defined without dividing by
2329 zero. (thanks to Vincent Arkesteijn)
2330 * FORMAT compile-time argument count checking has been enhanced.
2331 (report from Bruno Haible for CMUCL)
2332 * a partial workaround for the bug 262: the compiler does not try to
2333 inline-expand a local function doing RETURN-FROM from a deleted
2334 BLOCK. (thanks to Peter Denno for the bug report and to David
2335 Wragg for the simple test case)
2336 * fixed some bugs revealed by Paul Dietz' test suite:
2337 ** RENAME-PACKAGE allows all package designators as new package
2339 ** constraint propagation and lambda variable substitution are
2340 more cautious in dealing with partially deleted code.
2341 ** compiler sometimes lost reoptimization passes.
2342 ** CERROR, given a condition as condition designator, passes its
2343 remaining arguments to the continue format control without
2345 ** Case-altering FORMAT directives work correctly on non-ASCII
2347 ** The REAL type specifier handles bounds outside the floating
2348 point ranges without signalling FLOATING-POINT-OVERFLOW.
2349 ** Functions with IR1-transformations can create intercomponent
2350 references to global functions.
2351 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2353 ** FORMAT ~R treats a nil value for its first parameter correctly.
2355 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2356 * enhancement: saving cores with foreign code loaded is now
2357 supported on x86/NetBSD and sparc/Linux in addition to the previously
2358 supported platforms.
2359 * bug fix: on some platforms repeated installations caused multiple
2360 copies of HTML documentation to be installed -- should not happen
2361 any more. (reported by Stefan Scholl)
2362 * bug fix: parsing self-recursive alien record types multiple times
2363 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2364 original patch by Helmut Eller for CMUCL)
2365 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2366 (thanks to Richard Kreuter)
2367 * bug fix: defining classes whose accessors are methods on existing
2368 generic functions in other (locked) packages no longer signals
2369 bogus package lock violations. (reported by François-René Rideau)
2370 * bug fix: special variables as DEFMETHOD parameters no longer have
2371 associated bogus type declarations. (reported by David Wragg and
2373 * bug fix: read-write consistency on streams of element-type
2374 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2375 * bug fix: redefiniton of the only method of a generic function with
2376 no DEFGENERIC no longer emits a full WARNING. In addition,
2377 redefinition of generic functions with no DEFGENERIC to an
2378 incompatible lambda list now signals an error. (thanks to Zach
2380 * bug fix: DEFGENERIC now works even when there's a function of the
2381 same name in an enclosing lexical environment. (thanks to Zach
2383 * fixed compiler failure, caused by instrumenting code during
2384 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2385 * optimization: added loop analysis and improved register allocation
2386 * fixed some bugs revealed by Paul Dietz' test suite:
2387 ** POSITION on displaced vectors with non-zero displacement
2388 returns the right answer.
2389 ** (SIMPLE-STRING) is a valid type specifier for sequence
2391 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2393 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2394 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2396 ** The justification version of the FORMAT ~< directive treats
2397 non-zero minpad parameter correctly.
2399 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2400 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2401 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2402 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2403 the supported interface.
2404 * new feature: Single-stepping of code compiled with DEBUG 2 or
2405 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2406 * new feature: saving cores with foreign code loaded is now
2407 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2408 Timothy Moore's work for CMUCL)
2409 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2410 parameters to * instead of NIL if no initform is supplied.
2411 (reported by Johan Bockgaard)
2412 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2413 correctly when FUNCALL appears as the car of the form. Note:
2414 despite this FUNCALL forms are not currently subject to
2415 compiler-macro expansion. (port of Raymond Toy's fix for the
2416 same from CMUCL, reported by Johan Bockgaard)
2417 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2418 (thanks for Teemu Kalvas)
2419 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2420 case instead of terminating the iteration (thanks for Julian
2421 Squires, Sean Champ and Raymond Toy)
2422 * bug fix: incorrect expansion of defgeneric that caused a style
2423 warning. (thanks for Zach Beane)
2424 * bug fix: slot accessor effective method computation works properly
2425 for classes with multiple non-standard applicable methods on
2426 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2427 * on x86 compiler supports stack allocation of results of LIST and
2428 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2429 CMUCL implementation by Gerd Moellmann)
2430 * fixed some bugs revealed by Paul Dietz' test suite:
2431 ** FORMAT strings with both the ~<~:;~> form of the justification
2432 directive and pretty-printing directives cause an error.
2434 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2435 * incompatible change: the internal functions
2436 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2437 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2438 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2439 instead of the old functions.
2440 * new feature: on platforms where "dladdr" is available foreign
2441 function names now appear in backtraces. (based on Helmut Eller's
2443 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2444 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2446 * documentation: ASDF manual is now distributed with SBCL.
2447 * bug fix: SBCL can now load its contributed modules with REQUIRE
2448 even if the system-provided entries have been removed from
2449 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2451 * bug fix: backtraces involving undefined functions or assembly
2452 routines are more informative. (thanks to Brian Downing)
2453 * bug fix: mutually referent alien structures now work correctly.
2454 (reported by Rick Taube)
2455 * bug fix: structures defined by WITH-ALIEN can be referred to
2456 within other definitions in the same WITH-ALIEN.
2457 * bug fix: division operators (MOD, TRUNCATE and the like) with
2458 constant zero divisors and integer dividends no longer generate
2460 * bug fix: provide default methods for INPUT-STREAM-P and
2461 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2462 * bug fix: improve the detection and resolution of MOP metacycles
2463 (where effective method computation depends on the generic function
2464 having its effective method computed). (reported by Bruno Haible)
2465 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2466 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2467 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2468 * bug fix: pathnames with relative directory components can be
2469 represented relative to default pathnames.
2470 * optimization: in taking the GCD of bignums, reduce the two bignums
2471 to approximately the same size (using Euclid's algorithm) before
2472 applying the more sophisticated binary GCD. (thanks to Juho
2474 * optimization: COUNT on bitvectors now operates word-at-a-time.
2475 * optimization: ASH with a positive, but not necessarily constant,
2476 (leftwards) shift, when in a modular context, is compiled to a
2478 * fixed some bugs revealed by Paul Dietz' test suite:
2479 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2480 if the corresponding argument is NIL.
2481 ** FORMAT directives accepting a minpad parameter treat negative
2483 ** literal commas as character parameters to FORMAT directives are
2485 ** literal spaces directly after ~<Newline> directives within a
2486 format-logical-block (~:< ~@:>) do not induce :FILL-style
2487 conditional newlines.
2488 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2489 as specified: it no longer includes conditional newlines).
2490 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2492 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2493 :PER-LINE-PREFIX argument does not evaluate to a string.
2495 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2496 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2497 the manual for details; for now, package locks can be disabled by
2498 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2499 if no major problems are found then it is likely that they will be
2500 compiled in unconditionally.
2501 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2502 unsupported operators on all platforms. To load a shared library
2503 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2504 object file, link it into a shared library outside of SBCL and
2505 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2507 * bug workaround: ROOM T and the GC were not working together
2508 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2509 reporting facility aren't preserved. That reporting has been
2510 disabled, so now until and unless someone figures out how to make it
2511 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2512 * minor incompatible change: as threatened around sbcl-0.8.0, the
2513 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2514 The symbols are also exported from SB-PCL for backwards
2515 compatibility, but more so than before SB-PCL should be treated as
2516 an implementation-internal package.
2517 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2519 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2520 It is known as of this release not to work on the Alpha, however.
2521 * fixed bug #167: errors signalled due to illegal syntax in method
2522 bodies are now more legible.
2523 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2524 designators and can hence be used with TYPEP.
2525 * fixed bug #333: CHECK-TYPE now ensures that the type error
2526 signalled, if any, has the right object to be accessed by
2527 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2528 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2529 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2531 * fixed bug #334: programmatic addition of slots using specialized
2532 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2533 and :ALLOCATION :CLASS slots.
2534 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2535 float exponents. (rereported by Peter Seibel)
2536 * fixed a bug: #\Space (and other whitespace characters) are no
2537 longer considered to be macro characters in standard syntax by
2538 GET-MACRO-CHARACTER.
2539 * fixed bug: initialization of condition class metaobjects no longer
2540 causes an instance of the condition to be created. (reported by
2542 * fixed bug: it is now possible to have slots such that
2543 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2544 description is neither :INSTANCE nor :CLASS.
2545 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2546 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2547 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2548 non-standard SLOT-DEFINITION-ALLOCATION values.
2549 * fixed bugs: various race conditions handling exiting threads.
2550 CL-PPCRE's thread torture test now passes.
2551 * fixed arguably-a-bug: GC time proportional to number of threads in
2552 system even when most of them are idle
2553 * optimization: improved performance of BIT and SBIT on bit-vectors.
2554 * .fasl file incompatibility: The fasl file version number has
2555 been incremented because of changes associated with package locks.
2557 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2558 * minor incompatible change: the system no longer provides
2559 optimization hints (conditions which are TYPEP
2560 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2561 mode; these hints are still emitted when higher SPEED optimization
2563 * new contrib module: a sampling profiler (profiling by statistical
2564 sampling, rather than by instrumenting functions) is available as
2565 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2566 * the behaviour of the standard function ED is now customizeable by
2567 third parties through a hook variable: see ED's documentation
2568 string for information on the protocol.
2569 * the compiler no longer emits efficiency notes for (FUNCALL X)
2570 when the type of X is uncertain under default optimization
2572 * fixed bug 276: mutating a binding of a specialized parameter to a
2573 method to something that is not TYPEP the specializer is now
2575 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2576 exhibit the required behaviour on the x86 platform. (thanks to
2577 Peter van Eynde, Eric Marsden and Bruno Haible)
2578 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2579 even for difficult arguments. (reported by Peter Graves)
2580 * fixed bug 141a: the backquote printer now descends quoted
2582 * fixed another bug in backquote printing: no more destructive
2583 modification of the form's list structure. (reported by Brian
2585 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2586 move between its address being taken and the call to
2587 interrupt_thread, fixing a crashing race condition.
2588 * the SB-POSIX contrib implementation has been adjusted so that it
2589 no longer exhibits ridiculously poor performance when constructing
2590 instances corresponding to C structs.
2592 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2593 * minor incompatible change: the sb-grovel contrib now treats C
2594 structures as alien (in the sense of SB-ALIEN) objects rather than
2595 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2596 has implications for memory management of client code
2597 (sb-grovel-returned objects must now be manually managed) and for
2598 type safety (alien objects now have full types).
2599 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2600 used to control emission of compiler diagnostics, rather than the
2601 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2602 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2603 quality should be considered deprecated.
2604 * install.sh now installs the user manual as well
2605 * (not quite a new documentable feature, but worth considering in
2606 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2607 beginnings of a semantically meaningful condition hierarchy is
2608 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2610 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2611 designator as the defaults argument.
2612 * fixed bug: Displaced arrays whose displaced-to array has become
2613 too small now cause ARRAY-DIMENSION to signal an error, providing
2614 for safer bounds-checking. (reported by Bruno Haible)
2615 * fixed bug: DEFCLASS slot definitions with identical :READER and
2616 :WRITER names now signal a reasonable error. (reported by Thomas
2618 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2620 * fixed bug: Invalid slot specification errors now print correctly.
2621 (thanks to Zach Beane)
2622 * fixed bug 320: Shared to local slot value transfers in class
2623 redefinitions now happen corrently from superclasses as
2624 well. (reported by Bruno Haible)
2625 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2627 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2628 improper lists correctly. (reported by Bruno Haible)
2629 * fixed bug 313: source-transform for <fun-name> was erroneously
2630 applied to a call of a value of a variable with name <fun-name>.
2631 (reported by Antonio Menezes Leitao)
2632 * fixed bug 307: The obsolete instance protocol ensures that
2633 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2634 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2635 remove dead unknown-values globs from the middle of the stack.
2636 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2637 easier to resume long computations after using *BREAK-ON-SIGNALS*
2638 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2639 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2640 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2641 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2642 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2643 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2645 * fixed a (fairly theoretical) bug in string printing: if
2646 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2647 does not have array-element-type equal to the most general string
2649 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2650 function name. (thanks to Nikodemus Siivola)
2651 * fixed bug: compile-time format string checker failed on
2652 non-closed ~{. (reported by Thomas F Burdick)
2653 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2654 don't warn on legal loop code involving more than one aggregate
2655 boolean. (thanks to Nikodemus Siivola)
2656 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2657 in keyword position to MAKE-PACKAGE was not being reported as
2659 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2660 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2662 * fixed bugs 280 and 312: the checking for multiple definitions in a
2663 file is less likely to become confused by uses of inline
2665 * fixed bug: the #S reader macro performs the keyword coercion
2666 specified for slot names. (reported by Kalle Niemitalo)
2667 * fixed bug: lambda lists may contain symbols whose names start with
2668 & but are not lambda-list-keywords; their occurrence triggers a
2670 * fixed bug 321: define-method-combination argument lambda lists do
2671 not cause invalid code to be generated when &optional or &aux
2672 variables have default values. (reported by Bruno Haible)
2673 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2674 have CLOS classes; this appears also to have fixed reported
2675 instability in stack exhaustion detection.
2676 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2677 MUFFLE-WARNING when no associated restart is present is now
2679 * optimization: rearranged the expansion of various defining macros
2680 so that each expands into only one top-level form in a
2681 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2683 * optimization: used a previously little-used slot in symbols to
2684 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2686 * fixed some bugs revealed by Paul Dietz' test suite:
2687 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2689 ** Fixed an optimization bug related to inheritance of initforms
2690 from local to shared slots.
2691 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2692 ** CAST optimizer forgot to flush argument derived type.
2693 ** print/read consistency on floats is now orders of magnitude
2694 more likely. (thanks also to Bruno Haible for a similar report
2696 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2697 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2698 for objects of type REAL. Make it so.
2699 ** SXHASH is specified (infelicitously) to respect similarity,
2700 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2701 it so. (thanks to Markus Ziegler)
2702 ** on the Alpha, the compiler succeeds in compiling functions
2703 returning a known number of arguments greater than 63.
2704 ** fixed handling of invalid NIL arguments in keyword position
2706 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2708 ** provided a readably-printable representation for RANDOM-STATE
2710 ** ensured that pathnames, where they have a namestring, always
2711 print using #P"..." syntax.
2713 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2714 * Support for the forthcoming 2.0 version of the NetBSD kernel
2715 running on x86 hardware has been added. (thanks to Perry
2716 E. Metzger most immediately, and others for their past work)
2717 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2718 current release version; SBCL's OpenBSD support had been broken
2719 since about the time of OpenBSD's switch to ELF binary format.)
2720 * [placeholder for DX summary]
2721 ** user code with &REST lists declared dynamic-extent, under high
2722 speed or space and low safety and debug optimization policy.
2723 * The manual has been converted to Texinfo format and the debugger
2724 chapter from the cmucl manual has been added.
2725 * A facility has been added to extract documentation strings from
2726 sbcl and store them as Texinfo-formatted snippets for inclusion in
2727 the manual (via Texinfo's @include directive)
2728 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2729 the test case to Dave Roberts)
2730 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2731 pointers. (reported by Sean Ross)
2732 * bug fix: PROFILE output is printed nicely even for large numerical
2733 values. (thanks to Zach Beane)
2734 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2735 greater than 32 handle EOF correctly.
2736 * bug fix: on X86 an immediate argument of the IMUL instruction is
2737 correctly printed in disassembly. (thanks to Lutz Euler)
2738 * bug fix: class slots in redefined classes preserve their old
2739 values. (thanks to Bruno Haible and Nikodemus Siivola)
2740 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2741 succeeds. (reported by Marco Baringer)
2742 * fixed some bugs revealed by Paul Dietz' test suite:
2743 ** READ-SEQUENCE now works on ECHO-STREAMs.
2744 ** RATIONALIZE works more according to its specification. (thanks
2747 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2748 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2749 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2750 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2751 should matter to you only if you rebind the printer control
2752 variables and then find you want different bindings in the
2753 debugger than in the ordinary execution of your program.)
2754 * The runtime build system has been tweaked to support building
2755 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2756 assembler and linker. (thanks to Nikodemus Siivola)
2757 * Unbound, undefined, undeclared variables now trigger full
2758 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2759 more often programmer error than deliberate exploitation of undefined
2761 * optimization: the hash algorithm for strings has changed to one
2762 that is less vulnerable to spurious collisions. (thanks to Juho
2764 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2765 needless bounds checking. (thanks to Juho Snellman)
2766 * optimization: implemented multiplication as a modular
2767 (UNSIGNED-BYTE 32) operation on the PPC backend.
2768 * fixed some bugs revealed by Paul Dietz' test suite:
2769 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2771 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2772 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2773 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2775 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2777 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2779 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2780 their output stream on EOF from read.
2781 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2782 have been read to end-of-file.
2783 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2785 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2786 description of determination of which consecutive characters
2788 ** Printing the "Space" character with escaping on now yields "#\\ ",
2789 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2790 ** Reading floating-point numbers with *READ-BASE* set to a number
2791 less than 10 works correctly.
2792 ** Reading floating-point numbers with *READ-BASE* set to a number
2793 more than 10 works correctly.
2794 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2795 the readtable currently in effect.
2797 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2798 * minor incompatible change: parsing of namestrings on a physical
2799 (Unix) host has changed; numbers after the final #\. in a
2800 namestring are no longer interpreted as a version field. This is
2801 intented to be largely invisible to the user, except that the
2802 meaning of the namestring "*.*.*" has changed: it now refers to a
2803 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2804 should usually be replaced by
2805 (make-pathname :name :wild :type :wild :version :wild)
2806 with the added benefit that this is more likely to be portable.
2807 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2808 option to OPEN now signals an error if the file being opened
2809 exists; this may have an impact on existing code.
2810 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2811 signals received, on the PowerPC platforms (both Linux and
2812 Darwin). (thanks to Pierre Mai for pointing out the location of
2814 * several fixes on OS X: The system now builds and runs cleanly on
2815 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2816 (thanks to Brian Mastenbrook)
2817 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2818 second-resolution: integer multiples of 1/3600 between -24 and 24.
2819 (thanks to Vincent Arkesteijn)
2820 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2821 type when called with 1 argument; PEEK-CHAR checked type of
2822 PEEK-TYPE only after having read first character from a
2823 stream. (reported by Peter Graves)
2824 * bug fix: the garbage collector now has much better locality
2825 behaviour, and in particular no longer treats all memory as being
2826 exhausted when many small objects point to each other in a deeply
2828 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2829 recognized as being TYPEP their class.
2830 * bug fix: the PUSHNEW documentation string has been corrected.
2831 (thanks to Vincent Arkesteijn)
2832 * bug fix: defaulting of the value for the last of an atypically
2833 large number of multiple values being bound was not being
2834 performed correctly on the Alpha or PPC platforms
2835 * optimization: implemented multiplication as a modular
2836 (UNSIGNED-BYTE 32) operation on the x86 backend.
2837 * optimization: SEARCH on simple-base-strings can now be open-coded.
2838 (see also contrib/compiler-extras.lisp for inspiration for
2839 teaching the compiler about the Boyer-Moore algorithm).
2840 * value, returned by MAX (and MIN) called with several EQUALP, but
2841 not EQL, arguments now does not depend on compiler settings.
2842 * fixed some bugs revealed by Paul Dietz' test suite:
2843 ** in stack analysis liveness information is propagated from
2844 non-local entry points.
2845 ** pathwise CAST removing failed when the CAST node did not start
2847 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2848 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2850 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2851 host is already defined.
2852 ** RENAME-FILE works on streams instead of signalling an internal
2854 ** PEEK-CHAR uses the current readtable when determining whether
2855 or not a character is whitespace.
2856 ** MERGE-PATHNAMES handles the case when the pathname does not
2857 specify a name while the default-pathname specifies a version.
2858 ** Pathnames now stand a better chance of respecting print/read
2860 ** Attempting to use standardized file system operators with a
2861 pathname with invalid :DIRECTORY components signals a
2863 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2865 ** DIRECTORY on logical pathnames is more correct.
2866 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2867 signal a TYPE-ERROR if their argument is not a stream.
2868 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2869 designator argument does not designate a stream.
2870 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2871 examining the synonym.
2872 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2874 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2875 element-type larger than ([UN]SIGNED-BYTE 32).
2877 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2878 * When built with the :SB-FUTEX feature, threaded builds now take
2879 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2880 for faster/more reliable mutex and condition variable support.
2881 * Incompatible change (but one you probably shouldn't have been using
2882 anyway): the interface and code for arbitrating between multiple
2883 threads in the same user session has been redesigned.
2884 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2885 error when called without an explicit environment argument.
2886 (thanks to Nikodemus Siivola)
2887 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2888 confused about their position. (thanks to Adam Warner and Gerd
2890 * bug fix: Pretty printing backquoted forms with unquotations in the
2891 argument list position of various code constructs such as LAMBDA
2892 now works correctly. (reported by Paul Dietz)
2893 * bug fix: Pretty printing unquotations no longer loses all
2894 stream position information.
2895 * optimization: performance of string output streams is now less
2896 poor for multiple small sequence writes.
2897 * optimization: performance of CSUBTYPEP in the presence of complex
2898 expressions involving CONS and NOT many times has been improved.
2899 (reported by Paul Dietz)
2900 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2902 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2903 streams for the REPL, for the debugger, and so on. (thanks to
2905 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2906 * fixed some bugs revealed by Paul Dietz' test suite:
2907 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2908 is ignored if it is too small, rather than propagating through
2909 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2910 ** extremely complex negations of CONS types were not being
2911 sufficiently canonicalized, leading to inconsistencies in
2913 ** VALUES tranformer lost derived type.
2915 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2916 * fixed a bootstrapping bug: the build process no longer assumes
2917 that the various BOOLE-related constants have the same value in
2918 host and target lisps. (noted by Paul Dietz' test suite on an
2919 SBCL binary built from CLISP)
2920 * The system can now be dynamically linked on the MIPS platform,
2921 which enables dynamic loading of foreign code from Lisp. (thanks
2922 to Ralf Baechle for discussions on the MIPS ABI)
2923 * The system now records debugging information for its own source
2924 files in a filesystem-position-independent manner, relative to
2925 the "SYS" logical host.
2926 * fixed a compiler bug: MV-LET convertion did not check references
2927 to the "max args" entry point. (reported by Brian Downing)
2928 * tweaked disassembly notes to be less confident about proclaiming
2929 some instruction as an LRA. (thanks to Brian Downing)
2930 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2931 now each have their own history, command character, and other
2932 characteristics. (thanks to David Lichteblau)
2933 * fixed some bugs revealed by Paul Dietz' test suite:
2934 ** compiler failure in compiling LOGAND expressions including a
2936 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2937 shift greater than 32.
2938 ** FLUSH-DEST did not mark blocks for type check regeneration.
2939 ** HANDLER-CASE failed to accept declarations in handler clauses
2940 in some circumstances.
2942 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2943 * New code in contrib/sb-introspect (still probably not entirely
2944 stable yet) provides some support for smart Lisp development
2945 environments like SLIME.
2946 * The conditions signalled for errors occurring when loading .fasl
2947 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2948 in a way which should help ASDF recover gracefully.
2949 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2950 stuff has been cleaned up. If you code contrib/ stuff, this might
2951 affect you, and you can look at contrib/README, contrib/STANDARDS,
2952 and/or the 0.8.4.27 diff to check.
2953 * In full calls the compiler now does not generate checks for declared
2954 argument types for all arguments.
2955 * various threading fixes
2956 ** and some experimental patches which didn't make it into
2957 the main tree for this release, but which are shipped in
2958 contrib/experimental-thread.patch as a possible fix for some
2959 failures (deadlock, spinning...) in GC-intensive multithreaded
2961 * fixed PPC build problem (source code incompatibility of different
2962 library versions): added offsetof() hackery which attempts to divine
2963 where glibc maintainers put uc_mcontext today
2964 * fixed bug 282: compiler does not trust type assertions while passing
2965 arguments to a full call.
2966 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2967 &OPTIONAL VALUES type parameter.
2968 * fix bug 214: algorithm for noting rejected templates is now more
2969 similar to that of template seletion. (also reported by rydis on
2971 * fixed bug 141b: printing backquoted information readably and prettily
2972 inserts a space where necessary.
2973 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2974 (CHARACTER 10) are now reported as errors, rather than propagated
2975 as unknown types. (reported by piso on #lisp)
2976 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2977 with values NIL and :ERROR. (thanks to Milan Zamazal)
2978 * fixed bug 191c: CLOS now does proper keyword argument checking as
2979 described in CLHS 7.6.5 and 7.6.5.1.
2980 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2981 longer raise an error; further, using a list as a for-as-arithmetic
2982 counter now raises a meaningful error.
2983 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2984 now understood by sequence creation functions such as MAKE-SEQUENCE
2986 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2987 a STRING-INPUT-STREAM.
2988 * compiler enhancement: SIGNUM is now better able to derive the type
2990 * type declarations inside WITH-SLOTS are checked. (reported by
2992 * fixed some bugs revealed by Paul Dietz' test suite:
2993 ** incorrect optimization of TRUNCATE for a positive first
2994 argument and negative second.
2995 ** compiler failure in let-convertion during flushing dead code.
2996 ** compiler failure while deriving type of TRUNCATE on an
2997 interval, containing 0.
2998 ** ASH of a negative bignum by a negative bignum count now returns
3000 ** intersection of CONS types now canonicalizes properly, fixing
3001 inconsistencies in SUBTYPEP.
3003 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3004 * incompatible change: The --disable-debugger command line
3005 option now clobbers the debugger at a more fundamental
3006 level, by redefining #'INVOKE-DEBUGGER instead of by
3007 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3008 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3009 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3010 enter the debugger REPL and then suffer recursive errors
3011 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3012 while under the new system, BREAK in --disable-debugger mode
3013 terminates the system just as an unhandled error would.
3014 * fixed compiler performance when processing loops with a step >1;
3015 * bug fix: DOCUMENTATION now retrieves generic function
3016 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3017 support has been systematized, and now supports the methods
3018 specified by ANSI, along with a default method and a method for
3019 slot documentation. (reported by Nathan Froyd)
3020 * bug fix: effective methods associated with a generic function are
3021 no longer cached over a change of that generic function's method
3022 combination. (reported by Andreas Fuchs)
3023 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3024 names a non-existent directory. (thanks to Andreas Fuchs)
3025 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3026 the PPC platform, lead to stack corruption; this has been fixed.
3027 (reported by Rainer Joswig)
3028 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3029 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3030 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3031 arithmetic in general, is now much more reliable on the PPC
3033 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3034 platform now returns the right answer.
3035 * optimization: restored some effective method precomputation in
3036 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3037 precomputation is now tunable.
3038 * optimization: compiler-internal data structure use has been
3039 reviewed, and changes have been made that should improve the
3040 performance of the compiler by about 20%.
3041 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3042 simple-base-strings and simple-bit-vectors is improved.
3043 * optimization: the optimization of 32-bit logical and arithmetic
3044 functions introduced in version 0.8.3 on the x86 has been
3045 implemented on the mips, ppc and sparc platforms; an
3046 implementation of the same facility, but for 64-bit arithmetic,
3047 has been added for the alpha.
3048 * microoptimization: the compiler is better able to make use of the
3049 x86 LEA instruction for multiplication by constants.
3050 * bug fix: in some situations compiler did not report usage of
3051 generic arithmetic in (SPEED 3) policy.
3052 * bug 145b fix: compiler used wrong type specifier while converting
3053 MEMBER-types to numeric.
3054 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3056 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3057 index argument now works properly on the Alpha platform.
3058 * bug fix: floating point exception treatment on the Alpha platform
3060 * bug fix: FILE-POSITION works much better on string input and
3061 output streams. (thanks to Nikodemus Siivola)
3062 * bug fix: many threading/garbage collection symptoms sorted.
3063 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3064 might be pseudo-atomic.
3065 * internal change: Stopping for GC is now done with signals not
3066 ptrace. GC is now done in whichever thread wanted it, instead of
3068 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3070 * bug fix: result form in DO is not contained in the implicit
3072 * incompatible change: ICR structure is changed; the value part of
3073 CONTINUATION is now called LVAR; corresponding functions are
3074 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3075 * added type deriver for ISQRT (thanks to Robert E. Brown).
3076 * bug fix: better support for loading from the command line when an
3077 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3079 * fixed some bugs revealed by Paul Dietz' test suite:
3080 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3081 ** ROUND and FROUND now give the right answer when given very
3082 small float arguments.
3083 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3085 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3086 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3087 ** LCM should return a non-negative integer.
3088 ** PARSE-INTEGER returned the index of a terminator instead of the
3089 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3090 ** PARSE-INTEGER returned an incorrect index being applied to a
3092 ** LCM with two arguments of 0 returns 0 rather than signalling
3094 ** unsigned addition of a 32-bit constant with the high bit set no
3095 longer causes an internal compiler error on the x86.
3096 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3097 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3098 with negative last argument.
3099 ** byte specifiers with zero size and position no longer cause
3100 an error during type derivation.
3101 ** bignum multiplication on the Alpha platform now returns the
3103 * porting: The system now builds on SuSE AMD64, although it still
3104 generates a 32-bit binary.
3105 * .fasl file incompatibility: The fasl file version number has
3106 been incremented (because of the changes to internal compiler
3107 data structures referred to above).
3109 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3110 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3111 more accurately, on the Darwin kernel running on PowerPC hardware.
3112 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3113 * Compiler code deletion notes now signal a condition of type
3114 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3115 an associated MUFFLE-WARNING restart.
3116 * The compiler now performs limited argument count validation of
3117 constant format strings in FORMAT, and where appropriate in ERROR,
3118 CERROR and WARN. (thanks to Gerd Moellmann)
3119 * New ASDF-INSTALL contrib can be used for automatic download and
3120 installation of third-party Lisp code from CCLAN or other sites
3122 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3123 which forces another thread to execute a function supplied by the
3125 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3126 now accept and act upon their :ELEMENT-TYPE keyword argument.
3127 (reported by Martin Atzmueller, Edi Weitz)
3128 * bug fix: FILE-POSITION now accepts position designators up to
3129 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3130 is the greater. (thanks to Patrik Nordebo)
3131 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3132 Kalle Olavi Niemitalo)
3133 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3134 printable. (reported by Eric Marsden)
3135 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3136 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3137 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3138 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3139 (thanks to Stig Sandoe)
3140 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3141 UNREAD-CHAR now correctly includes the unread character in the
3142 target sequence. (thanks to Gerd Moellmann)
3143 * bug fix in threaded builds: the system can now be suspended and
3144 resumed by shell job control with minimal disruption.
3145 * bug fixes in times and timezones >2038AD
3146 * better handling of "where is GNU make?" problem in build scripts
3147 (thanks to Nikodemus Siivola)
3148 * new optimization: inside a named function any reference to a
3149 function with the same name is considered to be a self-reference;
3150 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3151 optimization quality.
3152 * new optimization on x86: logical functions and + now have
3153 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3154 used when the result is truncated to 32 bits.
3155 * VALUES declaration is partially enabled.
3156 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3157 * fixed some bugs revealed by Paul Dietz' test suite:
3158 ** The system now obeys the constraint imposed by
3159 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3160 types form a lattice under type intersection.
3161 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3162 ** ASSOC now ignores NIL elements in an alist.
3163 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3164 and (1+ MOST-POSITIVE-FIXNUM) answers.
3165 ** The addition of a method with invalid qualifiers to a generic
3166 function does not cause an error to be signalled immediately;
3167 a warning is signalled, and the error is generated only on
3168 calling the generic function.
3169 * changed .fasl file version number, in part to add type codes for
3170 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3171 obscure ANSI requirements
3173 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3174 * fixed bug 148: failure to inline-expand a local function left
3175 garbage, confusing the compiler.
3176 * fixed bugs 3cd: structure slot readers perform type check if the
3177 slot can have an invalid value (i.e. it is either not initialized
3178 or can be written with a less specific slot writer).
3179 * bug fix: the compiler now traps array references to elements off
3180 the end of an array; previously, the bounds checking in some
3181 circumstances could go off-by-one.
3182 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3184 * type declarations for array element types now obey the description
3185 on the CLHS page "Declaration TYPE", as per discussions on
3186 sbcl-help around 2003-05-08. This means that a declaration
3187 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3188 declaration, all references to BAR will be asserted or assumed
3189 (with THE, so dependent on compiler policy) to involve objects of
3190 type FOO. Note that no such declaration is implied in
3191 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3192 * declared types of functions from the "Conditions"
3193 chapter. (reported by Paul Dietz)
3194 * bug fix: CERROR accepts a function as its first argument.
3195 * bug fix: NTH an NTHCDR accept a bignum as index
3196 arguments. (reported by Adam Warner)
3197 * optimization: character compare routines now optimize comparing
3198 against a constant character. (reported by Gilbert Baumann)
3199 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3200 argument now works properly on the MIPS platform.
3201 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3202 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3203 declared to have a functional type, does not cause an error
3205 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3206 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3207 * fixed bug: if last continuation of a deleted block has a
3208 destination, this destination should be deleted too. (reported by
3210 * fixed a bug in the bootstrap process: the host compiler's values
3211 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3212 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3213 test case from Patrik Nordebo)
3214 * improved the ability of the disassembler on the PPC platform to
3215 provide helpful disassembly notes.
3216 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3217 the class in more cases than previously.
3218 * bug fix: FILE-POSITION now understands :START and :END for
3219 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3220 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3221 8) data. (thanks to David Lichteblau)
3222 * bug fix: it is possible to add a method to a generic function
3223 without lambda list.
3224 * bug fix: reader failed to signal END-OF-FILE inside an
3225 object representation. (reported by Nikodemus Siivola)
3226 * fixed some bugs revealed by Paul Dietz' test suite:
3227 ** LAST and [N]BUTLAST should accept a bignum.
3228 ** condition slot accessors are methods.
3229 ** (VECTOR NIL) is a subtype of STRING.
3231 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3232 * minor incompatible change: some nonsensical specialized lambda
3233 lists (used in DEFMETHOD) which were previously ignored now signal
3235 * minor incompatible change: the system is now aware of the types of
3236 variables in the COMMON-LISP package, and will signal errors for
3237 most violations of these type constraints (where previously they
3238 were silently accepted).
3239 * minor incompatible change: COMPILE-FILE now uses the freedom
3240 afforded (ANSI 3.2.2.3) to use derived function types for
3241 functions defined in the same file. This also permits the system
3242 to warn on static type mismatches and function
3243 redefinition. (Currently it does not work with high DEBUG level.)
3244 * minor incompatible change: VALUES declaration is disabled.
3245 * When issuing notes, the compiler now signals a condition of type
3246 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3247 restart for use in user handlers. It is expected that the
3248 COMPILER-NOTE condition will eventually become a condition
3249 supertype to a hierarchy of note types, which will then be
3250 handleable in a similar fashion. However, at the moment, no such
3251 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3252 but it's an implementation detail, not a classification for the
3254 * Changes in type checking closed the following bugs:
3255 ** type checking of unused values (192b, 194d, 203);
3256 ** template selection based on unsafe type assertions (192c, 236);
3257 ** type checking in branches (194bc).
3258 * A short form of VALUES type specifier has ANSI meaning (it has
3259 increased the number of situations when SBCL cannot perform type
3261 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3262 keywords or constants is permissible.
3263 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3264 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3265 classes. (thanks to Antonio Martinez)
3266 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3267 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3268 argument to a pretty-print stream. Instead, it leaves any such
3269 operations to DESCRIBE-OBJECT methods.
3270 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3272 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3273 lambda lists. (thanks to David Lichteblau)
3274 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3275 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3276 (thanks to Gerd Moellmann)
3277 * fixed bug 246: increased compilation speed of long
3278 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3280 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3282 * DEFCONSTANT now throws a condition of type
3283 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3284 constant to a non-EQL value; CONTINUE and ABORT restarts
3285 respectively change and preserve the value.
3286 * fixed bug 63: The code walker, part of the implementation of CLOS,
3287 is now better at handling symbol macros.
3288 * bug fix: There is no longer an internal implementation type named
3289 CL:LENGTH. (reported by Raymond Toy)
3290 * bug fix: In macro-like defining macros/special operators the
3291 implicit block does not enclose the lambda list.
3292 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3293 enclosed in parentheses) are not suitable as type specifiers, and
3294 their use properly signals an error now.
3295 * bug fix: An argument count mismatch for a type specifier in code
3296 being compiled no longer causes an unhandled error at compile
3297 time, but signals a compile-time warning.
3298 * fixed simple vector readable printing
3299 * bug fix: DESCRIBE takes more care over whether the class
3300 precedence list slot of a class is bound before accessing it.
3301 (reported by Markus Krummenacker)
3302 * bug fix: FORMATTER can successfully compile pretty-printer format
3303 strings which use variants of the ~* directive inside.
3304 * bug fix: SEARCH now applies its TEST predicate to the elements of
3305 the arguments in the correct order. (thanks to Wolfhard Buss)
3306 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3307 in type inference. (thanks to Robert E. Brown)
3308 * bug fix: Reading in symbols with an explicit package name of ""
3309 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3310 * fixed some bugs revealed by Paul Dietz' test suite:
3311 ** NIL is now allowed as a structure slot name.
3312 ** Arbitrary numbers, not just REALs, are allowed in certain
3313 circumstances in LOOP for-as-arithmetic clauses.
3314 ** Multiple class redefinitions before slot access no longer
3315 causes a type error.
3316 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3317 association between the name and a class.
3318 ** Generic functions with non-standard method-combination and over
3319 five methods all of which return constants no longer return NIL
3320 after the first few invocations. (thanks to Gerd Moellmann)
3321 ** CALL-NEXT-METHOD with no arguments now passes the original
3322 values of the arguments, even in the presence of assignment.
3323 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3325 ** DISASSEMBLE works with closures and funcallable instances.
3326 ** ADD-METHOD now returns the generic function, not the new method.
3327 ** FIND-METHOD signals an error if the lengths of the specializers
3328 is incompatible with the generic function, even if the ERRORP
3330 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3331 which its argument is a member.
3332 ** DEFCLASS only redefines the class named by its class-name
3333 argument if that name is the proper name of the class;
3334 otherwise, it creates a new class.
3335 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3336 of the UNBOUND-SLOT condition to the name of the slot.
3337 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3338 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3339 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3340 SLOT-MAKUNBOUND in the specified fashion.
3342 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3343 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3344 cross-compilation host. As a consequence, we can now bootstrap our
3345 way up to SBCL starting with a bare gcc toolchain and human-readable
3346 source code (first the source to CLISP, then the source to SBCL).
3347 * A contributed module containing a partial implementation of the
3348 simple-streams interface has been included. (thanks to Rudi
3350 * A contributed module implementing the RFC1321 Message Digest
3351 Algorithm, known as MD5, has been included.
3352 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3353 no longer has any effect, as the code controlled by this feature
3354 has been deleted. (As far as we know, no-one has ever built using
3355 this feature, and its semantics were confused in any case).
3356 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3357 work on conditions (as required by the ANSI specification),
3358 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3359 expected behaviour on conditions. Users should note, however,
3360 that such behaviour is not required by the ANSI specification,
3361 and so use of this behaviour may render their code unportable.
3362 * fixed some bugs revealed by Paul Dietz' test suite:
3363 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3365 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3366 ** SXHASH on condition objects no longer returns NIL.
3367 ** :ALLOCATION :CLASS slots are better treated; their values are
3368 updated on class redefinition, and initforms inherited from
3369 superclasses are applied.
3370 ** REMOVE-METHOD returns its generic function argument even when
3371 no method was removed.
3372 ** SHARED-INITIALIZE now initializes the values of the requested
3373 slots, including those with :ALLOCATION :CLASS.
3374 ** ALLOCATE-INSTANCE now works on structure classes defined via
3375 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3377 ** SLOT-EXISTS-P now works on conditions, as well as structures
3379 ** MAKE-LOAD-FORM now has the required methods on
3380 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3381 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3382 keyword, and now implements the SLOT-NAMES argument.
3383 ** methods with &OPTIONAL arguments no longer allow too many
3384 arguments to be passed in the call without error.
3385 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3386 option is consistent with the required arguments of the generic
3387 function lambda list.
3388 * bug fix: REQUIRE accepts a string designator. (Thanks to
3390 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3391 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3392 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3393 * bug fix: The compiler now checks for duplicated variables in macro
3395 * bug fix: SETQ on globals returns the correct value.
3396 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3397 not a COMPILER-ERROR (followed by some other strange error on
3398 choosing the CONTINUE restart).
3399 * bug fix: make.sh and friends are now more consistent in the way that
3400 they look for GNU "make".
3402 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3403 * experimental native threads support (on x86 Linux >=2.4 only).
3404 This is not compiled in by default: you need to add :SB-THREAD to
3405 the target features. See the "Beyond ANSI" chapter of the manual
3407 * fix for longstanding nonANSIism: The old distinction between
3408 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3409 The return value from CL:FIND-CLASS is now a CLOS class, and
3410 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3411 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3412 * An interface to the MetaObject Protocol, as described in Kiczales,
3413 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3414 MIT Press, 1991, is available from the SB-MOP package.
3415 * incompatible change: the SB-PCL package should now be considered
3416 a private implementation detail, and no longer a semi-private MOP
3418 * minor incompatible change: due to rearrangement for threads, the
3419 control stack and binding stack are now allocated at arbitrary
3420 addresses instead of being hardcoded per-port. Users affected by
3421 this probably have to be doing advanced things with shared
3422 libraries, and will know who they are.
3423 * minor incompatible change: Previously, all --eval forms used were
3424 processed with READ before any of them were processed with EVAL.
3425 Now each --eval form is processed with both READ and EVAL before
3426 the next --eval form is processed. (Thus package operations like
3427 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3428 work as the user might reasonably expect.)
3429 * minor incompatible change: *STANDARD-INPUT* is now only an
3430 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3432 * minor incompatible change: Y-OR-N-P is now character-oriented,
3433 not line oriented. Also, YES-OR-NO-P now works without errors.
3434 (thanks to Antonio Martinez)
3435 * sb-aclrepl module improvements: an integrated inspector, added
3436 repl features, and a bug fix to :trace command.
3437 * Known functions, which cannot be open coded by the backend, are
3438 considered to be able to check types of their arguments. (fixing
3439 a bug report by Nathan J. Froyd)
3440 * fixed a bug in computing method discriminating functions: It is
3441 now possible to define methods specialized on classes which have
3442 forward-referenced superclasses. (thanks to Gerd Moellmann)
3443 * fixed evaluation order in optional entries (reported by Gilbert
3445 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3446 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3447 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3448 required-by-AMOP NAME argument, as well as CLASS and
3449 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3450 * fixed bug 20: DEFMETHOD can define methods using names that are
3451 not the proper names of classes to designate class specializers.
3452 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3453 Unix file descriptors, instead of blowing up. (thanks to Antonio
3455 * Garbage collection refactoring: user-visible change is that a
3456 call to the GC function during WITHOUT-GCING will not do garbage
3457 collection until the end of the WITHOUT-GCING. If you were doing
3458 this you were probably losing anyway.
3459 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3460 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3461 TYPEP the latter but not the former.
3462 * The compiler issues a full WARNING for calls to undefined functions
3463 with names from the CL package.
3464 * MAP-INTO for a vector destination is open coded. (reported by
3465 Brian Downing on c.l.l)
3466 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3467 documentation string.
3468 * fixed some bugs revealed by Paul Dietz' test suite:
3469 ** COPY-ALIST now signals an error if its argument is a dotted
3471 ** Condition slots are now accessed more correctly in the presence
3472 of multiple initargs for a given slot.
3473 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3474 exclude restarts of the same name associated with a different
3476 ** DEFCLASS of forward-referenced classes with another
3477 forward-referenced class in the superclasses list no longer
3479 ** Condition slots are now initialized once each, not multiple
3480 times. (thanks to Gerd Moellmann)
3481 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3483 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3484 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3485 arguments contain duplicated elements.
3486 ** RESTART-CASE understands local macros.
3487 ** RESTART-CASE associates exactly its own restarts with a condition.
3488 ** ENDP in safe mode checks its argument to be of type LIST.
3489 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3490 in question is unbound.
3491 ** Optimized MAKE-INSTANCE functions no longer cause internal
3492 assertion failures in the presence of duplicate initargs.
3493 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3494 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3495 propagated even in the ctor optimized implementation of
3497 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3499 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3500 * a better implementation of SXHASH on (simple) bit vectors,
3501 measured both in execution speed and in distribution of results
3502 over the positive fixnums, has been installed. Likewise, a better
3503 implementation of EQUAL for simple bit vectors is now available.
3504 * fixed CEILING optimization for a divisor of form 2^k.
3505 * fixed bug 240 (emitting extra style warnings "using the lexical
3506 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3507 by Antonio Martinez)
3508 * fixed SXHASH, giving different results for NIL depending on type
3509 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3510 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3511 variable. (found by Rolf Wester)
3512 * SBCL does not ignore type declarations for special
3513 variables. (reported by rif on c.l.l 2003-03-05)
3514 * some bug fixes in contrib/sb-aclrepl/
3515 * fixed some bugs revealed by Paul Dietz' test suite:
3516 ** a bug in the CONS type specifier, whereby the CAR and CDR
3517 types got intertwined, has been fixed;
3518 ** the type system is now able to reason about the interaction
3519 between INTEGER and RATIO types more completely;
3520 ** APPEND, [N]REVERSE and NRECONC check that those their
3521 arguments, which must be proper lists, are really so;
3522 ** An array specialized to be unable to hold elements has been
3523 implemented, as required -- yes, really -- by ANSI;
3524 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3525 on malformed property lists;
3527 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3528 * incompatible packaging change: in line with Unix convention,
3529 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3530 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3531 * REQUIRE and PROVIDE are now optionally capable of doing something
3532 useful. See the documentation string for REQUIRE.
3533 * infrastructure for a managed SBCL contrib system: contributed
3534 modules in this release include:
3535 ** the ASDF system definition facility;
3536 ** an interface to the BSD Sockets API;
3537 ** an ACL-like convenience interface to the repl;
3538 (thanks to Kevin Rosenberg)
3539 ** an implementation of ROTATE-BYTE, with efficient implementation
3541 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3542 gives a closer approximation to the right answer than previously.
3543 (thanks to Raymond Toy)
3544 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3545 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3546 optional environment arguments, as required by ANSI.
3547 * fixed bugs in other functions taking environment objects, allowing
3548 calls with an explicit NIL environment argument to be compiled
3550 * fixed bug 228: primary return values from
3551 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3552 COMPILE or FUNCTION.
3553 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3554 :TYPE will no longer signal errors on innocuous objects.
3555 * fixed bug 231b: SETQ is better at respecting type declarations in
3556 the lexical environment.
3557 * fixed a bug in DEFCLASS: classes named by symbols with no or
3558 unprintable packages can now be defined.
3559 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3560 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3561 * fixed compiler failure related to checking types of functions.
3562 (reported by Robert E. Brown)
3563 * the compiler is now much more consistent in its error-checking
3564 treatment of bounding index arguments to sequence functions: in
3565 (SAFETY 3) code, errors will be signalled in almost all cases if
3566 invalid sequence bounding indices are passed to functions defined
3567 by ANSI to operate on sequences.
3568 * fixed a bug in the build procedure: documentation of SBCL-specific
3569 packages is now preserved and available in the final Lisp image.
3570 * lifted FDEFINITION lookup out of loops in the implementation of
3571 many list operations. (thanks to Robert E. Brown)
3572 * fixed a bug in the reader: the #n# reader macro now works for
3573 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3574 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3575 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3576 E. Brown and Tony Martinez respectively)
3577 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3578 SLOT-BOUNDP: in particular, it is now able to optimize them much
3579 better, and is now not vulnerable to having packages renamed.
3580 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3581 always called when a slot is not present in an instance. (thanks
3583 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3584 longer signal an error on unreading a character following EOF on
3585 the previous constituent stream. (thanks to Tony Martinez)
3586 * fixed some bugs revealed by Paul Dietz' test suite:
3587 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3588 not just nonnegative fixnums;
3589 ** the logical bit-array operators such as BIT-AND now accept an
3590 explicit NIL for their "opt-arg" argument (to indicate a
3591 freshly-consed result bit-array);
3592 ** ELT now signals an error on an invalid sequence index in safe
3594 ** the type system is now cleverer about negations of numeric
3595 types, and consequently understands the BIGNUM and RATIO types
3597 ** the type system is now cleverer about the interaction between
3598 INTEGER and RATIO types: while bugs still remain, many more
3599 cases are accurately computed;
3600 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3601 if it is in the last clause;
3602 ** CONSTANTLY now correctly returns a side-effect-free function in
3604 ** DECLARE is no longer treated as a special-operator; in
3605 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3606 * incremented fasl file version number due to the change in the
3607 DEFSTRUCT-SLOT-DESCRIPTION structure.
3609 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3610 * minor incompatible change: code processed by the "interpreter" or
3611 EVAL now has a compilation optimization policy of (DEBUG 2)
3612 (changed from (DEBUG 1)) to improve debuggability of interactive
3613 development, and to allow the use of the debug RETURN command in
3615 * an experimental implementation of the RETURN command for the
3616 debugger has been included. (thanks to Frederik Kuivinen)
3617 * fixed bug 62: constraints were not propagated into a loop.
3618 * fixed bug in embedded calls of SORT (reported and investigated by
3620 * fixed some bugs revealed by Paul Dietz' test suite:
3621 ** printing and reading of arrays with some dimensions having
3622 length 0 (thanks to Gerd Moellmann);
3623 ** BOA constructor with &AUX argument without a default value does
3624 not cause a type error;
3625 ** CONSTANTP now returns true for all self-evaluating objects.
3627 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3628 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3629 accessors that are related by inheritance, as specified in the
3630 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3631 Valtteri Vuorikoski)
3632 * The compiler is now able to inline functions that were defined in
3633 a complex lexical environment (e.g. inside a MACROLET).
3634 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3636 * Support for the upcoming FreeBSD-5.0 release has been included.
3637 (thanks to Dag-Erling Smorgrav)
3638 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3639 effect when it is not in a toplevel context.
3640 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3641 stand a better chance of being correct. (thanks to Gerd
3643 * fixed bug in COERCE, which now signals an error on coercing a
3644 rational to a bounded real type which excludes the expected
3646 * The compiler is now able to derive types more accurately from the
3647 COERCE and COMPILE functions.
3648 * fixed bug 223: functional binding is considered to be constant
3649 only for symbols in the CL package.
3650 * fixed bug 231: SETQ did not check the type of a variable being set
3651 (reported by Robert E. Brown)
3652 * A new optimization for MAKE-INSTANCE has been included, fixing
3653 various bugs (including relating to :ALLOCATION :CLASS slots and
3654 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3656 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3657 ** As required by ANSI, LOOP now disallows anonymous collection
3658 clauses such as COLLECT I in conjunction with aggregate boolean
3659 clauses such as THEREIS (= I 1);
3660 ** LOOP now signals an error when any variable is reused in the
3661 same loop (including the potentially useful construct analogous
3662 to WITH A = 1 WITH A = (1+ A);
3663 ** IT is only a special loop symbol within the first clause of a
3664 conditional loop clause;
3665 ** LOOP with a typed iteration variable over a hashtable now
3666 signals a type error iff it should.
3667 * fixed some other bugs revealed by Paul Dietz' test suite:
3668 ** FILE-STREAM now names the class previously known as FD-STREAM;
3669 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3670 argument) no longer signals an error;
3671 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3672 of the slot symbol, rather than using the current package
3673 ((:CONC-NAME "") continues to intern the slot's name in the
3675 * incremented fasl file version number, because of the incompatible
3676 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3677 of the new implementation of DEFINE-COMPILER-MACRO.
3679 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3680 * Support for building SBCL for MIPS platforms running in
3681 little-endian mode has now been checked in, and basic
3682 functionality on said platforms verified.
3683 * minor incompatible change: PCL now records the pathname of a file
3684 in which methods and the like are defined, rather than its
3686 * minor incompatible change: TRUENAME now considers the truename of
3687 a file naming a directory to be the pathname with :DIRECTORY
3688 component indicating that directory.
3689 * minor incompatible change: a NAMED clause in the extended form of
3690 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3691 reason for the previous behaviour is unclear.
3692 * more systematization and improvement of CLOS and MOP conformance
3693 in PCL (thanks to Gerd Moellman and Pierre Mai):
3694 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3696 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3697 primary methods with no specializers;
3698 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3700 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3701 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3702 FORWARD-REFERENCED-CLASSes; error reporting on
3703 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3705 ** SXHASH on CLOS instances now uses a slot internal to the
3706 instance to return different numbers on distinct instances,
3707 while preserving the same return value through invocations of
3709 ** DEFMETHOD signals errors when methods with longer incongruent
3710 lambda lists are added to generic functions;
3711 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3712 CLASS, as specified in AMOP;
3713 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3714 on the order returned by the primary method for classes of
3715 class STANDARD-CLASS;
3716 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3717 * fixed some bugs shown by Paul Dietz' test suite:
3718 ** DOLIST puts its body in TAGBODY;
3719 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3721 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3722 value producing form;
3723 ** if more variables are given to PROGV than values, extra
3724 variables are bound and made to have no value;
3725 ** NSUBSTITUTE on list arguments gets the right answer with
3727 ** ELT signals an error of type TYPE-ERROR when the index argument
3728 is not a valid sequence index;
3729 ** LOOP signals (at macroexpansion time) an error of type
3730 PROGRAM-ERROR when duplicate variable names are found;
3731 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3732 ** FUNCALL of special-operators now cause an error of type
3734 ** PSETQ now works as required in the presence of side-effecting
3735 symbol-macro places;
3736 ** NCONC accepts any object as its last argument;
3737 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3739 ** loop-for-as-package does not require a package to be explicitely
3741 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3743 * fixed bug 166: compiler preserves "there is a way to go"
3744 invariant when deleting code.
3745 * fixed bug 172: macro lambda lists with required arguments after
3746 &REST arguments now cause an error to be signalled. (thanks to
3748 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3749 bug. (thanks to Matthew Danish)
3750 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3752 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3753 arguments are lexically rebound. (thanks to Gerd Moellmann and
3755 * fixed bug 194: error messages are now more informative when there
3756 is no primary method applicable in a call to a generic
3757 function. (thanks to Gerd Moellmann)
3758 * fixed bug in command line argument checking (thanks to Julian
3760 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3761 (thanks to Matthew Danish)
3762 * incremented fasl file version number, because of the
3763 SXHASH-related changes in the layout of CLOS data structures
3765 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3766 * minor incompatible change: The runtime (the Unix executable named
3767 "sbcl") is now much pickier about the .core files it will load.
3768 Essentially it now requires .core files to descend from the same
3769 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3770 as the runtime does. (The intent is to prevent the crashes which
3771 can occur, and which can even be reported as mysterious failures,
3772 when people patch the sources or change the build parameters
3773 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3774 sbcl and .core files.)
3775 * fixed bug: VALUES-LIST is no longer optimized away.
3776 * fixed bug 142: The FFI conversion of C string values to Lisp
3777 string values no longer conses excessively. (thanks to Nathan
3778 Froyd porting Raymond Toy's fix to CMU CL)
3779 * began to systematize and improve MOP conformance in PCL (thanks to
3780 Nathan Froyd, Gerd Moellman and Pierre Mai):
3781 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3783 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3784 ** FINALIZE-INHERITANCE is now called on class finalization;
3785 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3786 argument precedence order.
3787 * fixed bug 202: The compiler no longer fails on functions whose
3788 derived types contradict their declared type.
3789 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3790 so it can be non-toplevel.
3791 * The fasl file version number has changed (because of the new
3792 implementation of DEFMACRO).
3793 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3794 safe code, that any length requirement by their type-specifier
3795 argument is valid. The exceptions to this are described in bug
3797 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3798 functions now check the types of their inputs as required by ANSI.
3799 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3800 introduced symbol is DECLAREd to be SPECIAL.
3801 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3802 * fixed bug: :COUNT argument to sequence functions may be negative
3803 * fixed bug: body of DO-SYMBOLS may contain declarations
3804 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3805 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3806 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3807 symbol macro only once
3808 * fixed printing of call frame when argument list is unavailable
3809 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3810 * compiler no longer signals WARNING on unknown keyword
3813 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3814 * A beta-quality port to the mips architecture running Linux,
3815 based on the old CMUCL backend, has been made. It has been tested
3816 on a big-endian kernel, and works sufficiently well to be able to
3817 rebuild itself; it has not been tested in little-endian mode.
3818 * fixed an inconsistency between gencgc.c and purify.c which made
3819 dumping/loading .core files unreliable
3820 * fixed bug 120a: The compiler now deals correctly with IFs where
3821 the consequent is the same as the alternative, instead of
3822 misderiving the return type. (thanks to Alexey Dejneka)
3823 * fixed bug 113: Logical pathnames are now dumpable (the logical
3824 host is resolved at load-time, throwing an error if it is not
3826 * fixed bug 174: FORMAT's error message is slightly clearer when a
3827 non-printing character is used in a format directive.
3828 * fixed several bugs in compiler checking of type declarations, i.e.
3829 violations of the Python "declarations are assertions" principle
3830 (thanks to Alexey Dejneka)
3831 * fixed several bugs in PCL's error checking (thanks to Gerd
3833 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3835 * fixed bug in compilation of functions as first class values
3836 (thanks to Antonio Martinez-Shotton)
3837 * The compiler's handling TYPE-ERRORs which it can prove will
3838 inevitably happen at runtime has been cleaned up and corrected
3839 in several ways. (thanks to Alexey Dejneka)
3840 * improved argument type checking for various basic arithmetic
3841 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3842 lavished on them in the past that they can be compiled in many
3843 ways in different special cases
3844 * fixed bug 181: compiler checks validity of user supplied type
3846 * cleaned up code flushing in optimization: Function calls which
3847 should signal errors for safety purposes (e.g. which ANSI says
3848 should signal errors when their arguments are of incorrect type)
3849 are no longer optimized away.
3850 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3851 * incremented fasl file version number, because changes in the
3852 implementation of sequence functions like COERCE caused
3853 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3854 in old inline expansions) to become undefined. (Actually these
3855 changes were later undone, so we might very well be binary
3856 compatible with 0.7.7 after all, but leaving the version number
3857 incremented seemed like the simplest and most conservative
3860 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3861 * An alpha-quality port to the parisc architecture running Linux,
3862 based on the old CMUCL backend, has been made. This, even more so
3863 than the other backends, should be considered still a work in
3864 progress; known problems include that the Linux kernel in 64-bit
3865 mode does not propagate the correct sigcontext structure to
3866 userspace, and consequently SBCL on a parisc64 kernel will not
3868 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3869 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3870 suppressed.) Also now that the compiler is looking at declarations
3871 in the environment, it checks optimization declarations as well,
3872 and suppresses inlining when (> DEBUG SPEED).
3873 * More fixes have been made to treatment of floating point exception
3874 treatment and other Unix signals. In particular, floating point
3875 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3876 * The detection and handling of control stack exhaustion (infinite
3877 or very deeply nested recursion) has changed. Stack exhaustion
3878 detection is now done by write-protecting pages at the OS level
3879 and applies at all optimization settings; when found, a
3880 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3881 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3882 be caught using IGNORE-ERRORS.
3883 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3884 correctly when transforming recursive LABELS functions to LETs.
3885 (thanks to Alexey Dejneka)
3886 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3887 that are names of constants or global variables.
3888 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3889 alien routines with docstrings.
3890 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3891 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3893 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3894 (thanks to Eric Marsden)
3895 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3896 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3897 * Bug fix: The SPARC backend can now compile functions involving
3898 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3899 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3900 to a functions expecting a PATHNAME-DESIGNATOR.
3901 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3902 lambda lists. (thanks to Alexey Dejneka)
3903 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3904 functions so that EXPORTing the name of the class doesn't cause
3905 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3906 to Antonio Martinez for reporting this)
3907 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3908 constant-folded without failing an assertion. (thanks to Einar
3909 Floystad Dorum for reporting this)
3910 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3911 types are now dealt with more correctly by the compiler.
3912 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3913 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3914 behaviour analogous to RENAME-FILE. This puts its behaviour more
3915 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3917 * The fasl file version number has changed again. (because of the
3918 bug fix involving the names of PCL MAKE-INSTANCE functions)
3920 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3921 * bug fix: Floating point exceptions are treated much more
3922 consistently on the x86/Linux and PPC/Linux platforms.
3923 * Array initialization with :INITIAL-ELEMENT is now much faster for
3924 cases when the compiler cannot open code the array creation, but
3925 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3926 array accesses have also seen a speed increase.
3927 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3928 specified. (This was at the root of some bad interactions between
3929 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3931 * bug fix: Internal error arguments for undefined functions are now
3932 computed correctly on the PPC/Linux platform.
3933 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3934 Raymond Toy's patch for CMU CL)
3935 * Support for the Solaris 9 operating environment has been included
3936 (thanks to Daniel Merritt)
3937 * A very ugly but hopefully complete draft of the missing FFI chapter
3938 of the manual has been created by reformatting the corresponding
3939 CMU CL manual chapter into (currently very ugly and incoherent)
3940 DocBook and bringing it up to date for SBCL behavior. Thus, the
3941 manual is now essentially complete, at least by my extreme
3942 once-and-only-once standards, whereby it's acceptable to refer to
3943 the doc strings of SB-EXT functions as the primary documentation.
3944 * The fasl file version number has changed again, due to cleanup of
3945 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3946 is no longer a static symbol.)
3948 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3949 * SBCL now builds with OpenMCL (version 0.12) as the
3950 cross-compilation host; also, more progress has been made toward
3951 bootstrapping under CLISP.
3952 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3954 * bug 158 fixed: The compiler can now deal with integer loop
3955 increments different from 1; fixing this turned out also to fix
3957 * bug 169 fixed: no more bogus warnings about using lexical bindings
3958 despite the presence of perfectly good SPECIAL declarations (thanks
3959 to David Lichteblau)
3960 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3961 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3962 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3964 * bug 180 fixed: Method combination specifications no longer ignore
3965 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3966 * bug fix: Structure type predicate functions now check their argument
3967 count as they should.
3968 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3969 correctly. (thanks to Pierre Mai)
3970 * minor incompatible change: The --noprogrammer option is deprecated
3971 in favor of the new --disable-debugger option, which is very similar.
3972 (The major difference is that it takes effect at a slightly different
3973 time at startup, causing handling of errors in --sysinit and
3974 --userinit files will be affected differently.) The
3975 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3976 been added to allow this functionality to be controlled from ordinary
3977 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3978 maintainers, who might want to run non-interactive scripts to
3979 build SBCL cores which will later be used interactively.)
3980 * minor incompatible change: The LOAD function no longer, when given
3981 a wild pathname to load, loads all files matching that pathname.
3982 Instead, an error of type FILE-ERROR is signalled.
3984 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3985 * bug 147 fixed: The compiler preserves its block link/count
3986 invariants more correctly now so that it doesn't crash. (thanks
3988 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3990 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3991 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3992 no-value-for-this-character as NIL (as specified by ANSI).
3993 * HOST-NAMESTRING on physical pathnames now returns a string that is
3994 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3995 (thanks to Christophe Rhodes)
3996 * The Alpha port handles icache flushing more correctly. (thanks to
3998 * More progress has been made toward bootstrapping under CLISP. (thanks
3999 to Christophe Rhodes)
4000 * The fasl file format has changed again, because dynamic loading
4001 on OpenBSD (which has non-ELF object files) motivated some cleanups
4002 in the way that foreign symbols are transformed and passed around.
4003 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4004 is no longer treated as whitespace by the reader, but instead as
4005 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4006 |A
\7fB|, instead of A as it used to.
4008 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4009 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4010 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4011 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4012 this as of 0.7.1.45, but was left out of the previous news section
4013 (thanks to Dan Barlow)
4014 * SBCL now runs on the Solaris operating system on SPARC architectures
4015 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4016 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4017 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4018 * SPARC backend cleanups, allowing builds of cores optimized for V8
4019 and V9 SPARCS, and also emission of code targeted to a particular
4020 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4022 * SBCL is closer to bootstrapping under CLISP, thanks to various
4023 fixes by Christophe Rhodes.
4024 * The fasl file format has changed again, to allow the compiler's
4025 INFO database to support symbol macros.
4026 * The user manual (in doc/) is formatted into HTML more nicely.
4027 (thanks to coreythomas)
4028 * The system is smarter about SUBTYPEP relationships, especially
4029 those involving NOT types (including types such as ATOM which are
4030 represented internally using NOT types). Thus SUBTYPEP is less
4031 likely to return (VALUES NIL NIL) in general, and in particular
4032 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4034 * The fasl file format has changed again, because the internal
4035 representation of types now includes a new slot to support the new
4036 SUBTYPEP-of-NOT-types logic.
4037 * (not a change in the main branch of SBCL, but a related prototype
4038 which can hopefully be merged into the main branch of SBCL in the
4039 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4040 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4041 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4042 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4043 dispatch macro character combinations. (thanks to Alexey Dejneka)
4044 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4045 that superficially look like logical namestrings correctly.
4046 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4048 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4049 default supplied-p) for &optional and &key arguments. (thanks to
4052 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4053 * incompatible change: The compiler is now less aggressive about
4054 tail call optimization, doing it only when (> SPACE DEBUG) or
4055 (> SPEED DEBUG). (This is an incompatible change because there are
4056 programs which relied on the old CMU-CL-style behavior to optimize
4057 away their unbounded recursion which will now die of stack overflow.)
4058 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4059 for non-GENCGC systems has been increased to 20M (since that
4060 seems much closer to the likely performance optimum for modern
4061 systems than the old 4M value was)
4062 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4063 and *DEBUG-PRINT-LEVEL*
4064 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4065 of CMU CL's support for SPARC, and various endianness and other
4066 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4067 * new syntactic sugar for the Unix command line: --load foo.bar is now
4068 an alternate notation for --eval '(load "foo.bar")'.
4070 ** The system now detects stack overflow and handles it gracefully,
4071 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4072 optimization settings. (This is a good thing in general, and
4073 its introduction in this version should be particularly timely
4074 for anyone whose code fails because of suppression of tail
4076 ** The system now hunts for the C variable "environ" in a more
4077 devious way, to avoid segfaults when the C library version differs
4078 between compile time and run time. (thanks to Christophe Rhodes)
4079 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4080 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4081 ** The compiler no longer issues bogus style warnings for undefined
4082 classes in the same source file as the DEFCLASSes which defined
4083 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4085 ** fixes in CONDITION class precedence list for undefined function
4086 errors (thanks to Alexei Dejneka)
4087 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4088 correctly. (thanks to Dan Barlow)
4089 ** portability fixes aiming at bootstrapping under CLISP (thanks
4090 to Dave McDonald and Christophe Rhodes)
4091 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4092 ** fixes in type translation and and type inference (thanks to
4094 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4095 ** various fixes in the new ports (thanks to Dan Barlow)
4096 * several changes related to debugging:
4097 ** suppression of tail recursion, as noted above
4098 ** stack overflow detection, as noted above
4099 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4100 is now the default. (For some time encapsulation has been more
4101 reliable than the breakpoint-based :ENCAPSULATE NIL
4102 implementation, at least on X86 systems; and I just noticed that
4103 encapsulation also seems closer to the spirit of the ANSI
4106 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4108 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4109 up properly again. (There was a packaging bug in 0.7.0 which
4110 left their definitions in SB-SYS::LOAD-FOREIGN and
4111 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4112 vital for most things which interface to C-level interfaces,
4113 like extensions working with sockets or databases or
4114 Perl-compatible regexes or whatever, and the need to fix
4115 this bug is the main reason that 0.7.1 was released so
4117 ** DEFGENERIC is now choosier about the methods it redefines, so that
4118 reLOADing a previously-LOADed file containing DEFGENERICs does
4119 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4120 cycle now works as it should. (thanks to Alexey Dejneka)
4121 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4122 fixed by Christophe Rhodes. (He actually submitted this patch
4123 months ago, and I delayed until after 0.7.0.)
4124 ** Bug 111 (internal compiler confusion about runtime checks on
4125 FUNCTION types) was fixed by Alexey Dejneka.
4126 * Some internal cleanups (getting rid of variables which aren't
4127 needed now that the byte interpreter is gone) caused the fasl
4128 file format number to change again.
4130 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4131 * major incompatible change: The default fasl file extension, i.e. the
4132 default extension for files produced by COMPILE-FILE, has changed
4133 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4135 ** There are many changes in the implementation of the compiler.
4136 SBCL is now essentially a compiler-only implementation of ANSI
4137 Common Lisp. EVAL still "interprets" a few special cases, but
4138 almost all the interesting cases are handled by creating
4139 a LAMBDA expression, calling COMPILE on it, then calling
4140 FUNCALL on the result.
4141 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4142 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4143 Since the code is newer, there might still be some new bugs
4144 (though not as many as before Martin Atzmueller's fixes:-). But
4145 the new code is substantially simpler and clearer, and hopefully
4146 any remaining bugs will be simpler, less fundamental, and more
4147 fixable then the bugs in the old code.
4148 ** The revised compiler is still a little unsteady on its feet.
4150 *** The debugging information it produces (particularly the names
4151 of FUNCTION objects) is sometimes much less useful than what
4152 the old compiler produced.
4153 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4154 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4155 within a MACROLET) has been temporarily weakened.
4156 ** There are new compiler optimizations for various functions:
4157 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4158 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4159 *** the math functions TRUNCATE, FLOOR, and CEILING
4160 *** the function-of-all-trades COERCE
4161 Mostly these should be transparent, but there's one
4162 potentially-annoying problem (bug 117): when the compiler
4163 inline-expands a function and does type analysis on the result,
4164 it can create control paths which have type mismatches, and
4165 when it can't prove that those control paths aren't taken,
4166 it will issue WARNINGs about the type mismatches. This is
4167 a particular problem in practice for the new sequence functions.
4168 It's not clear how this should be fixed, and for now, a
4169 workaround is given in the entry for 117 in the BUGS file.
4170 ** (Because of the interaction between the two previous items --
4171 occasional inlining problems and new inline expansions -- some
4172 of the new sequence function optimizations won't really kick in
4173 completely until debugging information, and then inlining, are
4174 straightened out in some future version.)
4175 * minor incompatible changes:
4176 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4177 DIRECTORY no longer implicitly promotes NIL slots of its
4178 pathname argument to :WILD. In particular, when you ask for the
4179 contents of a directory (which you used to be able to do without
4180 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4181 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4182 ** changes in behavior that ANSI explicitly defines to be
4183 implementation dependent:
4184 *** The new compiler-only implementation still conforms with ANSI,
4185 but acts a little different than before. Besides the obvious
4186 changes in performance tradeoffs (that the cost per form passed
4187 to EVAL has gone up, and the cost per form executed by EVAL
4188 has gone down), the behavior of the system changes a little
4189 because there are no longer any interpreted function objects.
4190 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4191 e.g. doing COMPILE on the output of interactive DEFUN is
4193 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4195 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4196 has changed from (:CL) to NIL.
4197 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4198 e.g. #\Newline and #\Tab, don't have names specified in the
4199 ANSI Common Lisp standard, is now based on their ASCII symbolic
4200 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4201 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4202 are no longer used for output.
4203 ** changes in internal implementation constants:
4204 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4205 4 million. (If your application spends a lot of time GCing and
4206 you have a lot of RAM, you might want to experiment with
4207 increasing it even more.)
4208 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4209 However, almost all old code should still continue to work without
4210 immediate update, as SB-C-CALL is now a (deprecated) nickname
4212 ** Old operator names in the style DEF-FOO are now deprecated in
4213 favor of new corresponding names DEFINE-FOO, for consistency with
4214 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4215 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4216 internal symbols, but a few supported extensions like
4217 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4218 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4219 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4220 etc. as you get deeper into recursive calls to the debugger
4221 command loop, instead of the old "5]", "5]]", "5]]]"
4222 sequence. (I was motivated to do this when squabbles between
4223 ILISP and SBCL left me very deeply nested in the debugger. In the
4224 short term, this change will probably provoke more ILISP/SBCL
4225 squabbles, but hopefully it will be an improvement in the long run.)
4226 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4227 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4228 function, since declaiming return types involving aliens is
4229 (1) annoyingly messy to do by hand and (2) vital to efficient
4230 compilation of code which calls such functions.
4231 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4232 longer reexported by the SB-EXT package. They're solely useful
4233 for alien code, so it seems more logical that you should get
4234 them from the SB-ALIEN package, not in SB-EXT.
4235 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4236 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4237 features. Instead, the code that they used to control is always
4238 built into the system.
4239 * many other bug fixes
4240 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4241 advantage of the new EVAL-WHEN stuff and to clean them up in
4242 general, and they are now more ANSI-compliant in a number of
4243 ways. Martin Atzmueller is responsible for a lot of this.
4244 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4246 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4247 *** correct ERROR type for various file operations
4248 *** some fixes for Lisp streams
4249 *** DEFMETHOD syntax checking
4250 *** changing old weird representation of debug information as
4251 strings (which, among their other deficiencies, don't transform
4252 correctly when you rename packages, and don't change their
4253 print representation when you change things like *PACKAGE*
4254 and *PRINT-LENGTH*) to symbols and lists of symbols
4255 He also made several improvements and fixed several bugs in DESCRIBE.
4256 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4258 *** misbehavior of WRITE-STRING/WRITE-LINE
4259 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4260 and several other LOOP problems as well
4261 *** DIRECTORY when similar filenames are present
4262 *** DEFGENERIC with :METHOD options
4263 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4264 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4265 *** argument ordering in FIND with :TEST option
4266 *** mishandled package designator argument in APROPOS-LIST
4267 *** various problems in the backquote readmacro
4268 *** a bug in APROPOS
4269 *** probably some others that I'm not describing very well here,
4270 since the CVS log documents them by reference to sbcl-devel
4271 messages, and the SourceForge archives aren't working well.:-(
4272 ** Dan Barlow improved the Alpha port (and is making progress on the
4273 PPC port, for those of you who think different).
4274 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4275 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4276 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4277 continues to work on the SPARC port (for those of you in a position
4278 to look down upon our little PC-compatible boxes from a great height).
4279 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4280 and uses that copy, rather than the current dynamic value, when
4281 it's trying to decide whether to truncate output. Thus e.g.
4282 (let ((*print-lines* 50))
4283 (pprint-logical-block (stream nil)
4285 (let ((*print-lines* 8))
4286 (print (aref possiblybigthings i) stream)))))
4287 should now truncate the logical block only at 50 lines, instead of
4288 often truncating it at 8 lines, as it did before.
4289 * The doc/cmucl/ directory, containing old CMU CL documentation
4290 from the time of the fork, is no longer part of the base system.
4291 SourceForge has shut down its anonymous FTP service, and with it
4292 my original plan for distributing the old CMU CL documentation
4293 there. For now, if you need these files you can download an old
4294 SBCL source release and extract them from it.
4295 * The fasl file version number changed again, for dozens of reasons,
4296 some of which are apparent above.
4298 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4299 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4300 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4301 patch, so that DISASSEMBLE output is much nicer.
4302 * The code in the SB-PROFILE package now seems reasonably stable.
4303 I still haven't decided what the final interface should look like
4304 (I'd like PROFILE to interact cleanly with TRACE, since both
4305 facilities use function encapsulation) but if you have a need
4306 for profiling now, you can probably use it successfully with
4307 the current CMU-CL-style interface.
4308 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4309 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4310 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4311 link now returns the dangling link itself, and for similar
4312 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4313 link itself. (In these cases the old code signalled an error and
4314 looped endlessly, respectively.) Thus, DIRECTORY now works even
4315 in the presence of dangling and cyclic symbolic links.
4316 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4317 is now a supported extension again, since the consensus on
4318 sbcl-devel was that it can be useful for ordinary development
4319 work, not just for debugging SBCL itself.
4320 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4321 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4322 that currently-defined functions might be redefined later with
4323 different return types.
4324 * Hash tables can be printed readably, as inspired by CMU CL code
4325 of Eric Marsden and SBCL code of Martin Atzmueller.
4326 * better error handling in CLOS method combination, thanks to
4327 Martin Atzmueller porting Pierre Mai's CMU CL patches
4328 * more overflow fixes for >16Mbyte I/O buffers
4329 * A bug in READ has been fixed, so that now a single Ctrl-D
4330 character suffices to cause end-of-file on character streams.
4331 In particular, now you only need one Ctrl-D at the command
4332 line (not two) to exit SBCL.
4333 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4335 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4336 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4337 does the right thing.
4338 * The implementation of some type tests, especially for CONDITION
4339 types, is now tidier and maybe faster, due to CMU CL code
4340 originally by Douglas Crosher, ported by Martin Atzmueller.
4341 * Some math functions have been fixed, and there are new
4342 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4343 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4344 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4345 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4346 likely to be built into sbcl-0.7.0.)
4347 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4348 CL, ported to SBCL by Martin Atzmueller)
4349 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4350 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4351 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4352 * There's a new slam.sh hack to shorten the edit/compile/debug
4353 cycle for low-level changes to SBCL itself, and a new
4354 :SB-AFTER-XC-CORE target feature to control the generation of
4355 the after-xc.core file needed by slam.sh.
4356 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4357 COMPILE-FILE is no longer supported, so that now every function
4358 gets an entry point, so that block compilation looks a little
4359 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4360 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4361 returns the number of bytes consed since the system started,
4362 rather than the number consed since the first time the function
4363 was called. (The new definition parallels ANSI functions like
4364 CL:GET-INTERNAL-RUN-TIME.)
4365 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4366 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4367 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4368 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4369 * Fasl file version numbers are now independent of the target CPU,
4370 since historically most system changes which required version
4371 number changes have affected all CPUs equally. Similarly,
4372 the byte fasl file version is now equal to the ordinary
4375 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4376 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4377 is no longer recognized. I apologize for this, because it was
4378 listed in SB-EXT as a supported extension, but I found that
4379 its existing behavior was poorly specified, as well as incorrectly
4380 specified, and it looked like too much of a mess to straighten it
4381 out. I have enough on my hands trying to get ANSI stuff to work..
4382 * many patches ported from CMU CL by Martin Atzmueller, with
4383 half a dozen bug fixes in pretty-printing and the debugger, and
4384 half a dozen others elsewhere
4385 * fixed bug 13: Floating point infinities are now supported again.
4386 They might still be a little bit flaky, but thanks to bug reports
4387 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4388 as flaky as they were.
4389 * The --noprogrammer command line option is now supported. (Its
4390 behavior is slightly different in detail from what the old man
4391 page claimed it would do, but it's still appropriate under the
4392 same circumstances that the man page talks about.)
4393 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4394 are now supported, and enabled by default. Thus, the compiler can
4395 handle many floating point and complex operations much less
4396 inefficiently. (Thus e.g. you can implement a complex FFT
4398 * The compiler now detects type mismatches between DECLAIM FTYPE
4399 and DEFUN better, and implements CHECK-TYPE more correctly, and
4400 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4401 thanks to patches from Martin Atzmueller.
4402 * various fixes to make the cross-compiler more portable to
4403 ANSI-conforming-but-different cross-compilation hosts (notably
4404 Lispworks for Windows, following bug reports from Arthur Lemmens)
4405 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4406 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4407 fixed thanks to Pierre Mai's CMU CL patches.
4408 * fixes to keep the system from overflowing internal counters when
4409 it tries to use i/o buffers larger than 16M bytes
4410 * fixed bug 45a: Various internal functions required to support
4411 complex special functions have been merged from CMU CL sources.
4412 (When I was first setting up SBCL, I misunderstood a compile-time
4413 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4414 * improved support for type intersection and union, fixing bug 12
4415 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4416 more obscure bugs as well
4417 * some steps toward byte-compiling non-performance-critical
4418 parts of the system, courtesy of patches from Martin Atzmueller
4419 * Christophe Rhodes has made some debian packages of sbcl at
4420 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4421 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4422 stable, but are nonetheless usable. When he's ready, I'd be happy
4423 to add them to the SourceForge "File Releases" section. (And if
4424 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4425 * new fasl file format version number (because of changes in
4426 internal representation of (OR ..) types to accommodate the new
4427 support for (AND ..) types, among other things)
4429 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4430 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4432 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4434 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4435 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4436 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4437 * DESCRIBE now works on structure objects again.
4438 * Most function call argument type mismatches are now handled as
4439 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4440 know whether the function will be redefined before the call is
4441 executed. (The compiler could flag local calls with full WARNINGs,
4442 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4443 it doesn't keep track of enough information to know whether calls
4444 are local in this sense.)
4445 * Compiler output is now more verbose, with messages truncated
4446 later than before. (There should be some supported way for users
4447 to override the default verbosity, but I haven't decided how to
4448 provide it yet, so this behavior is still controlled by the internal
4449 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4450 src/compiler/ir1util.lisp.)
4451 * Fasl file format version numbers have increased again, because
4452 support for the Gray streams extension changes the layout of the
4453 system's STREAM objects.
4454 * The Gray subclassable streams extension now works, thanks to a
4455 patch from Martin Atzmueller.
4456 * The full LOAD-FOREIGN extension (not just the primitive
4457 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4458 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4459 but like most other programs, it defaults to copying the Unix
4460 environment from the original process instead of starting the
4461 new process in an empty environment.
4462 * Extensions which manipulate the Unix environment now support
4463 an :ENVIRONMENT keyword option which doesn't smash case or
4464 do other bad things. The CMU-CL-style :ENV option is retained
4465 for porting convenience.
4466 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4467 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4469 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4471 * A patch from Martin Atzmueller seems to have solved the SIGINT
4472 problem, and as far as we know, signal-handling now works cleanly.
4473 (If you find any new bugs, please report them!)
4474 * The system no longer defaults Lisp source file names to types
4475 ".l", ".cl", or ".lsp", but only to ".lisp".
4476 * The compiler no longer uses special default file extensions for
4477 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4478 seems to expect a single default extension for all compiled code,
4479 and there's no compelling reason to try to stretch the standard
4480 to allow two different extensions.) Instead, byte-compiled files
4481 default to the same extension as native-compiled files.
4482 * Fasl file format version numbers have increased again, because
4483 a rearrangement of internal implementation packages made some
4484 dumped symbols in old fasl files unreadable in new cores.
4485 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4486 many fewer weird special cases.
4487 * Bug #17 (differing COMPILE-FILE behavior between logical and
4488 physical pathnames) has been fixed, and some related misbehavior too,
4489 thanks to a patch from Martin Atzmueller.
4490 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4491 by Tim Moore, ported to SBCL by Martin Atzmueller.
4492 * Martin Atzmueller fixed several filesystem-related problems,
4493 including bug #36, in part by porting CMU CL patches, which were
4494 written in part by Paul Werkowski.
4495 * More compiler warnings in src/runtime/ are gone, thanks to
4496 more patches from Martin Atzmueller.
4497 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4500 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4502 * DESCRIBE now works on CONDITION objects.
4503 * The debugger now handles errors which arise when trying to print
4504 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4506 * The build system now uses an additional file, customize-target-features.lisp,
4507 to allow local modifications to the target *FEATURES* list. (The point of
4508 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4509 debugging features enabled, without having to worry about propagating it
4510 into everyone's system when I do a "cvs update".) When no
4511 customize-target-features.lisp file exists, the target *FEATURES* list
4512 should be constructed the same way as before.
4513 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4514 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4515 warn about behavior which is undefined under the ANSI spec. Note: This
4516 is specified by ANSI, but it's not very popular with programmers.
4517 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4518 macro in the SBCL sources for an example of a workaround which you
4519 might use to make portable ANSI-standard code which does what you want.
4520 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4521 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4522 when it's used as a non-toplevel form. (This is required in order
4523 to implement the DEFCONSTANT-EQX macro.)
4524 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4525 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4526 funny things, due to bugs in the implementation of EVAL-WHEN
4527 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4528 non-toplevel DEFCONSTANTs are uncommon.)
4529 * The core file version number and fasl file version number have been
4530 incremented, because the old noncompliant DEFCONSTANT behavior involved
4531 calling functions which no longer exist, and because I also took the
4532 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4533 * fixed bug 1 (error handling before read-eval-print loop starts), and
4534 redid debugger restarts and related debugger commands somewhat while
4536 ** The QUIT debugger command is gone, since it did something
4537 rather different than the SB-EXT:QUIT command, and since it never
4538 worked properly outside the main toplevel read/eval/print loop.
4539 Invoking the new TOPLEVEL restart provides the same functionality.
4540 ** The GO debugger command is also gone, since you can just invoke
4541 the CONTINUE restart directly instead.
4542 ** The TOP debugger command is also gone, since it's redundant with the
4543 FRAME 0 command, and since it interfered with abbreviations for the
4545 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4547 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4548 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4549 some porting work by Martin Atzmueller)
4550 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4551 with a boatload of patches which he ported to SBCL. Now that those
4553 ** The system tries to make sure that its low-priority messages
4554 are prefixed by semicolons, to help people who like to use
4555 syntax highlighting in their ILISP buffer. (This patch
4556 was originally due to Raymond Toy.)
4557 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4558 patches originally written by Raymond Toy.
4559 ** The compiler understands coercion between single-value and
4560 multiple-VALUES type expressions better, getting rid of some very
4561 weird behavior, thanks to patches originally by Robert MacLachlan
4562 and Douglas Crosher.
4563 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4564 lambda lists, thanks to a patch originally by Pierre Mai.
4565 ** The system no longer bogusly warns about "abbreviated type
4567 ** The compiler gets less confused by inlining and RETURN-FROM,
4568 thanks to some patches originally by Tim Moore.
4569 ** The system no longer hangs when dumping circular lists to fasl
4570 files, thanks to a patch originally from Douglas Crosher.
4571 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4572 undefined function error.
4573 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4574 in structure slot initforms) for now, documented workaround instead:-|
4575 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4576 * fixed bug 5: added stubs for various Gray stream functions called
4577 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4578 installed, at least appropriate type errors are generated
4579 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4580 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4581 consistently in DEFMETHOD forms.
4582 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4583 it doesn't seem to affect SBCL after all
4584 * The C runtime system now builds with better optimization and many
4585 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4587 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4589 * The system is now under CVS at SourceForge (instead of the
4590 CVS repository on my home machine).
4591 * The new signal handling code has been tweaked to treat register
4592 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4593 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4594 downstream, e.g. in debug-int.lisp, has implicit dependencies
4595 on the unsignedness of integer representation of machine words,
4596 and that caused the system to bomb out with infinite regress
4597 when trying to recover from type errors involving signed values,
4598 e.g. (BUTLAST '(1 2 3) -1).)
4599 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4600 (This was one of the bugs Peter Van Eynde reported back in July.)
4601 * The system now uses code inspired by Colin Walters' O(N)
4602 implementation of MAP (from the cmucl-imp@cons.org mailing
4603 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4604 inline the MAP operation, and there is more than one
4605 sequence argument to the MAP call (so that it can't just
4606 do ETYPECASE once and for all based on the type of the
4607 single sequence argument). (The old non-inline implementation
4608 of the general M-argument sequence-of-length-N case required
4609 O(M*N*N) time when any of the sequence arguments were LISTs.)
4610 * The QUIT :UNIX-CODE keyword argument has been renamed to
4611 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4612 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4614 * Raymond Wiker's patches to port dynamic loading from Linux to
4615 FreeBSD have been added.
4616 * The BUGS file is now more nearly up to date, thanks in large part
4617 to Martin Atzmueller's review of it.
4618 * The debugger now flushes standard output streams before it begins
4619 its output ("debugger invoked" and so forth).
4620 * The core version number and fasl file version number have both
4621 been incremented, because of incompatible changes in the layout
4623 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4624 used to not be called for a saved Lisp image.)
4625 * Martin Atzmueller's version of a patch to fix a compiler crash,
4626 as posted on sbcl-devel 13 September 2000, has been installed.
4627 * Instead of installing Martin Atzmueller's patch for the
4628 compiler transform for SUBSEQ, I deleted the compiler transform,
4629 and transforms for some similar consing operations.
4630 * A bug in signal handling which kept TRACE from working on OpenBSD
4632 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4633 away by constant folding
4634 * The system now defines its address space constants in one place
4635 (in the Lisp sources), and propagates them automatically elsewhere
4636 (through GENESIS and the sbcl.h file). Therefore, patching the
4637 address map is less unnecessarily tedious and error-prone. The
4638 Lisp names of address space constants have also been systematized.
4639 * CVS tags like dollar-Header-dollar have been removed from
4640 the sources, because they have never saved me trouble and
4641 they've been source of trouble working with patches and other
4642 diff-related operations.
4643 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4644 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4646 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4648 * The system has been ported to OpenBSD.
4649 * The system now compiles with a simple "sh make.sh" on the systems
4650 that it's supported on. I.e., now you no longer need to tweak
4651 text in the target-features.lisp-expr and symlinks in src/runtime/
4652 by hand, the make.sh takes care of it for you.
4653 * The system is no longer so grossly inefficient when compiling code
4654 involving vectors implemented as general (not simple) vectors (VECTOR T),
4655 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4656 which dares to use the various sequence functions on non-simple
4657 vectors, takes less of a performance hit.
4658 * There is now a primitive type predicate VECTOR-T-P
4659 to test for the (VECTOR T) type, so that e.g.
4660 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4661 can now be compiled with some semblance of efficiency. (The old code
4662 turned the type declaration into a full call to %TYPEP at runtime!)
4663 * AREF on (VECTOR T) is still not fast, since it's still compiled
4664 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4665 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4666 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4667 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4668 without making full calls to SUBTYPEP at runtime.
4669 (Some analogous efficiency issues for non-simple vectors specialized to
4670 element types other than T, or for non-simple multidimensional arrays,
4671 have not been addressed. They could almost certainly be handled the
4672 same way if anyone is motivated to do so.)
4673 * The changes in array handling break binary compatibility, so
4674 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4675 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4676 instead of (VALUES T T).
4677 * By following the instructions that Dan Barlow posted to sbcl-devel
4678 on 2 July 2000, I was able to enable primitive dynamic object
4679 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4680 functionality is not implemented (since it calls ld to resolve
4681 library references automatically, requiring RUN-PROGRAM for its
4682 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4683 try to resolve library references) is now supported.
4684 * The system now flushes the standard output streams when it terminates,
4685 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4686 them at several other probably-convenient times, e.g. in each pass of
4687 the toplevel read-eval-print loop, and after evaluating a form given
4688 as an "--eval" command-line option. (These changes were motivated by a
4689 discussion of stream flushing issues on cmucl-imp in August 2000.)
4690 * The source transform for TYPEP of array types no longer assumes
4691 that an array whose element type is a not-yet-defined type
4692 is implemented as an array of T, but instead punts, so that the
4693 type will be interpreted at runtime.
4694 * There is now some support for cross-compiling in make.sh: each of
4695 the phases of make.sh has its own script. (This should be transparent
4696 to people doing ordinary, non-cross-compile builds.)
4697 * Since my laptop doesn't have hundreds of megabytes of memory like
4698 my desktop machine, I became more motivated to do some items on
4699 my to-do list in order to reduce the size of the system a little:
4700 ** Arrange for various needed-only-at-cold-init things to be
4701 uninterned after cold init. To support this, those things have
4702 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4703 symbols with such names are now uninterned after cold init).
4704 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4705 fasl files for cold load.
4706 ** Remove the old compiler structure pooling code (which used to
4707 be conditional on the target feature :SB-ALLOC) completely.
4708 ** Redo the representation of some data in cold init to be more compact.
4709 (I also looked into supporting byte compiled code at bootstrap time,
4710 which would probably reduce the size of the system a lot, but that
4711 looked too complicated, so I punted for now.)
4712 * The maximum signal nesting depth in the src/runtime/ support code has
4713 been reduced from 4096 to 256. (I don't know any reason for the very
4714 large old value. If the new smaller value turns out to break something,
4715 I'll probably just bump it back up.)
4716 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4718 * Many, many bugs reported by Peter Van Eynde have been added to
4719 the BUGS list; some have even been fixed.
4720 * While enabling dynamic object file loading, I tried to make the
4721 code easier to understand, renaming various functions and variables
4722 with less ambiguous names, and changing some function calling
4723 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4724 * While trying to figure out how to do the OpenBSD port, I tried to
4725 clean up some of the code in src/runtime/. In particular, I dropped
4726 support for non-POSIX signal handling, added various comments,
4727 tweaked the code to reduce the number of compilation warnings, and
4728 renamed some files to increase consistency.
4729 * To support the new automatic configuration functionality in make.sh,
4730 the source file target-features.lisp-expr has been replaced with the
4731 source file base-target-features.lisp-expr and the machine-generated
4732 file local-target-features.lisp-expr.
4733 * fixed a stupid quoting error in make.sh so that using CMU CL
4734 "lisp -batch" as cross-compilation host works again
4736 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4738 * DESCRIBE no longer tries to call itself recursively to describe
4739 bound/fbound values, so that it no longer fails on symbols which are
4740 bound to themselves (like keywords, T, and NIL).
4741 * DESCRIBE now works on generic functions.
4742 * The printer now prints less-screwed-up representations of closures
4743 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4744 * A private symbol is used instead of the :EMPTY keyword previously
4745 used to mark empty slots in hash tables. Thus
4746 (DEFVAR *HT* (MAKE-HASH-TABLE))
4747 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4748 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4749 now does what ANSI says that it should. (You can still get
4750 similar noncompliant behavior if bang on the hash table
4751 implementation with all the symbols you get back from
4752 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4753 This breaks binary compatibility, since tests for equality to
4754 :EMPTY are wired into things like the macroexpansion of
4755 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4757 * There's now a minimal placeholder implementation for CL:STEP,
4758 as required by ANSI.
4759 * An obscure bug in the interaction of the normal compiler, the byte
4760 compiler, inlining, and structure predicates has been patched
4761 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4762 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4764 * Missing ordinary arguments in a macro call are now detected even
4765 when the macro lambda list contains &KEY or &REST.
4766 * The debugger no longer complains about encountering the top of the
4767 stack when you type "FRAME 0" to explicitly instruct it to go to
4768 the top of the stack. And it now prints the frame you request even
4769 if it's the current frame (instead of saying "You are here.").
4770 * As specified by ANSI, the system now always prints keywords
4771 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4773 * The default initial SIZE of HASH-TABLEs is now smaller.
4774 * Type information from CLOS class dispatch is now propagated
4775 into DEFMETHOD bodies, so that e.g.
4776 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4778 is now basically equivalent to
4779 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4780 (DECLARE (TYPE SINGLE-FLOAT X))
4782 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4783 operation, without having to do run-time type dispatch.
4784 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4785 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4786 * Since I don't seem to be making big file reorganizations very often
4787 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4788 is overflowing my ability to conveniently back them up), I've finally
4789 checked the system into CVS. (The CVS repository is on my home system,
4790 not at SourceForge -- putting it on SourceForge might come later.)
4791 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4792 high-level GC-NOTIFY-FOO functions send their output. (There's
4793 still very little control of where low-level verbose GC functions
4794 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4795 less than it used to -- the GC-NOTIFY-FOO functions are now under
4796 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4797 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4798 in only one place in the source code, and propagates it automatically
4799 everywhere that it's needed. Thus e.g. when I bump the version from
4800 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4801 * The C source files now include boilerplate legalese and documentation
4802 at the head of each file (just as the Lisp source files already did).
4803 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4804 to his page will be replaced with a link to his new CLiki service.
4806 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4808 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4809 * The build process now looks for GNU make under the default name "gmake",
4810 instead of "make" as it used to. If GNU make is not available as "gmake"
4811 on your system, you can change this default behavior by setting the
4812 GNUMAKE environment variable.
4813 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4814 can build without error under CMU CL.
4816 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4818 * There is now a partial SBCL user manual (with some new text and some
4819 text cribbed from the CMU CL manual).
4820 * The beginnings of a profiler have been added (starting with the
4821 CMU CL profiler and simplifying and cleaning up). Eventually the
4822 main interface should be through the TRACE macro, but for now,
4823 it's still accessed through vaguely CMU-CL-style functions and macros
4824 exported from the package SB-PROFILE.
4825 * Some problems left over from porting CMU CL to the new
4826 cross-compilation bootstrap process have been cleaned up:
4827 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4828 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4829 part when getting rid of the compiler *BACKEND* stuff.)
4830 ** The value of *NULL-TYPE* was screwed up, because it was
4831 being initialized before the type system knew the final
4832 definition of the 'NULL type. This screwed up several key
4833 optimizations in the compiler, causing inefficiency in all sorts
4834 of places. (I found it because I wanted to understand why
4835 GET-INTERNAL-RUN-TIME was consing.)
4836 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4837 PROCLAIM FTYPE information. Unfortunately this broke binary
4838 compatibility again, since now the forms output by DEFGENERIC
4839 to refer to functions which didn't exist in 0.6.3.
4840 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4841 can use the new (as of 0.6.3) transform for SOME into MAP into
4843 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4844 values to (INTEGER 0 1000000), so that the time code will no longer
4845 occasionally get blown up by Linux returning 1000000 microseconds
4846 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4847 its output conform to the ANSI spec. (Alas, this makes its output
4848 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4849 * A full call to MAP NIL with a single sequence argument no longer conses.
4850 * fixes to problems pointed out by Martin Atzmueller:
4851 * The manual page no longer talks about multiprocessing as though
4852 it were currently supported.
4853 * The ILISP support patches have been removed from the distribution,
4854 because as of version 5.10.1, ILISP now supports SBCL without us
4855 having to maintain patches.
4856 * added a modified version of Raymond Toy's recent CMU CL patch for
4857 EQUALP comparison of HASH-TABLE
4859 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4861 * The system still can't cross-compile itself with
4862 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4863 entails), but at least it can compile more of itself that way
4864 than it used to be able to, and various buglets which were uncovered
4865 by trying to cross-compile itself that way have now been fixed.
4866 * This release breaks binary compatibility again. This time
4867 at least I've incremented the FASL file format version to 2, so that the
4868 problem can be detected reliably instead of just causing weird errors.
4869 * various new style warnings:
4870 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4871 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4872 ** using the lexical binding of a variable named in the *FOO* style
4873 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4874 as specified by ANSI.
4875 * *RANDOM-STATE* is no longer automatically initialized from
4876 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4877 default behavior of the system is to repeat its behavior every time
4878 it's run. If you'd like to change this behavior, you can always
4879 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4880 old convention there was no comparably easy way to get the system to
4881 repeat its behavior every time it was run.
4882 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4883 FTYPE declarations has been removed, in favor of their ANSI
4884 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4885 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4886 the types of their sequence arguments can be determined at compile time.
4887 This is done through a new open code expansion for MAP which eliminates
4888 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4889 argument types can be determined at compile time.
4890 * The optimizer now transforms COERCE into an identity operation when it
4891 can prove that the coerced object is already of the correct type. (This
4892 can be a win for machine generated code, including the output of other
4893 optimization transforms, such as the MAP transform above.)
4894 * Credit information has been moved from source file headers into CREDITS.
4895 * Source file headers have been made more standard.
4896 * The CASE macro now compiles without complaining even when it has
4899 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4901 * (Note that the way that the PCL macroexpansions were rewritten
4902 to accommodate the change in DEFGENERIC below breaks binary
4903 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4904 not run under sbcl-0.6.2. Once we get out of alpha releases,
4905 i.e. hit release 1.0.0, we'll probably try to maintain binary
4906 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4907 and sbcl-1.4.4. Until then, however, it might be fairly common
4908 for maintenance releases to break binary compatibility.)
4909 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4911 * The reporting of unhandled signals has been changed to print some
4912 explanatory text as well as the report form. (Previously only
4913 the report form was printed.)
4914 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4915 it defines, so that the compiler no longer issues undefined function
4916 warnings for compiled-but-not-yet-loaded generic functions.
4917 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4918 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4919 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4920 section of the ANSI spec are supported.
4921 * The "" nickname for the "KEYWORD" package has been removed.
4922 The reader still handles symbol tokens which begin with a package marker
4923 as keywords, but it doesn't expose its mechanism for doing so in the
4924 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4925 * The system now issues STYLE-WARNINGs for contradictory TYPE
4926 proclamations. (Warnings for contradictory FTYPE proclamations would
4927 be nice too, but those can't be done usefully unless the type system
4928 is made smarter about FUNCTION types.)
4929 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4930 systematized, so that "*target-*.lisp is supposed to exist only on the
4931 target and imply that there's a related file which exists on the
4932 host, and *host-*.lisp is supposed to exist only on the host and imply
4933 that there's a related file which exists on the target. This involves a
4934 lot of renaming. Hopefully the acute confusion caused by the renaming
4935 will be justified by the reduction in chronic confusion..
4936 ** runtime-type.lisp -> early-target-type.lisp
4937 ** target-type.lisp -> late-target-type.lisp
4938 ** early-host-format.lisp -> early-format.lisp
4939 ** late-host-format.lisp -> late-format.lisp
4940 ** host-error.lisp -> misc-error.lisp
4941 ** early-error.lisp -> early-target-error.lisp
4942 ** late-error.lisp -> late-target-error.lisp
4943 ** host-defboot.lisp -> early-defboot.lisp
4944 ** code/misc.lisp -> code/target-misc.lisp
4945 ** code/host-misc.lisp -> code/misc.lisp
4946 ** code/numbers.lisp -> code/target-numbers.lisp
4947 ** code/early-numbers.lisp -> numbers.lisp
4948 ** early-host-type.lisp -> early-type.lisp
4949 ** late-host-type.lisp -> late-type.lisp
4950 ** host-typep.lisp -> typep.lisp
4951 ** load.lisp -> target-load.lisp
4952 ** host-load.lisp -> load.lisp
4953 ** host-disassem.lisp -> disassem.lisp
4954 ** host-insts.lisp -> insts.lisp
4955 ** byte-comp.lisp -> target-byte-comp.lisp
4956 ** host-byte-comp.lisp -> byte-comp.lisp
4957 ** host-signal.lisp -> signal.lisp
4958 ** host-defstruct.lisp -> defstruct.lisp
4959 ** late-target-type.lisp -> deftypes-for-target.lisp
4960 Furthermore, several other previously target-only files foo.lisp (e.g.
4961 hash-table.lisp and random.lisp) have been split into a target-and-host
4962 foo.lisp file and a target-only target-foo.lisp file, with their key type
4963 definitions in the target-and-host part, so that the cross-compiler will
4964 know more about target types.
4965 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4966 gone away. In their place are various *BACKEND-FOO* variables
4967 corresponding to the slots of the old structure.
4968 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4969 into the target SBCL has been fixed.
4970 * The chill.lisp system for loading cold code into a running SBCL
4972 * Support for the CMU CL "scavenger hook" extension has been removed.
4973 (It was undocumented and unused in the CMU CL sources that SBCL was
4974 derived from, and stale in sbcl-0.6.1.)
4975 * Various errors in the cross-compiler type system were detected
4976 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4977 (enabling various consistency checks). Many of them were fixed,
4978 but some hard problems remain, so the compiler is back to
4979 running without *TYPE-SYSTEM-INITIALIZED* for now.
4980 * As part of the cross-compiler type system cleanup, I implemented
4981 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4982 * I have started adding UNCROSS calls throughout the type system
4983 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4984 on cross-compiler input files will be able to go away, and various
4986 * CONSTANTP now returns true for quoted forms (as explicitly required
4989 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4991 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4992 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4993 (MAKE-LIST -1). In the longer term, it ought to become true
4994 that declarations are assertions even at SAFETY 1. For now, it's not
4995 quite true even at SAFETY 3, but it's at least more nearly true..
4996 (Note that this change seems to increases the size of the system by
4997 O(5%) and to decrease the speed of the compiler by 20% or more.)
4998 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4999 for the problem of printing dozens of lines of distracting information
5000 about low-level system machinery as part of the top stack frame
5001 on entry to the debugger when an undefined function was called.
5002 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5003 is not reset to COMMON-LISP-USER.
5004 * Compilation of stuff related to dyncount.lisp has been made conditional
5005 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5006 smaller. The various dyncount-related symbols have been moved into
5007 a new "SB-DYNCOUNT" package.
5008 * tty-inspect.lisp has been renamed to inspect.lisp.
5009 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5010 feature has gone away. (When we eventually port to other flavors of
5011 libc and/or Unix, we'll try to make the differences between flavors
5012 invisible at the user level.)
5013 * Various other *FEATURES* tags, and/or their associated conditionals,
5014 have been removed if obsolescent, or given better documentation, or
5015 sometimes given more-mnemonic names.
5017 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5019 * tidied up "make.sh" script
5020 * tidied up system directory structure
5021 * better "clean.sh" behavior
5022 * added doc/FOR-CMUCL-DEVELOPERS
5023 * many many small tweaks to output format, e.g. removing possibly-confusing
5024 trailing #\. character in DESCRIBE-INSTANCE
5025 * (EQUALP #\A 'A) no longer signals an error.
5026 * new hashing code, including EQUALP hashing
5027 * tidied up Lisp initialization and toplevel
5028 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5029 * command line argument processing
5030 * added POSIX-GETENV function to deal with Unix-ish environment variables
5031 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5032 terminating SBCL on EOF
5033 * non-verbose GC by default
5034 * There is no more "sbcl" shell script; the sbcl file is now the C
5035 runtime executable (just like CMU CL).
5036 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5038 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5039 symbol and package information as Lisp native symbol and package objects
5040 instead of strings naming symbols and strings naming packages. This way,
5041 whenever packages are renamed (as in warm init), debug information is
5042 transformed along with everything else.
5043 * tweaked the optimization policy declarations which control the building
5044 of SBCL itself. Now, among other things, the system no longer saves
5045 source location debugging information. (This helps two problems at once
5046 by reducing SBCL size and by keeping SBCL from trying to look for its
5047 sources -- which may not exist -- when reporting errors.)
5048 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5049 debugging and testing purposes
5050 * cleaned up printing, making the printer call PRINT-OBJECT for
5051 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5052 methods, giving nearly-ANSI behavior
5053 * converted almost all special variables to use *FOO* naming convention
5054 * deleted PARSE-TIME functionality, since it can be done portably
5055 * moved some files out of cold init into warm init
5056 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5058 * regularized formatting of source files
5059 * added an install.sh script
5060 * fixed ridiculous memory usage of cross-compiler by making
5061 compiler/alloc.lisp not try to do pooling unless it can hook
5062 itself into the GC of the cross-compilation host. Now the system
5063 builds nicely on my old laptop.
5064 * added :SB-ALLOC in target-features.lisp-expr
5065 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5066 was not implemented)
5067 * re-did condition handling and note reporting in the compiler. Notes
5068 are no longer handled by signalling conditions. Style warnings
5069 and warnings are handled more correctly and reported in such a way
5070 that it's easy to find one or the other in your output (so that you
5071 can e.g. figure out which of many problems caused COMPILE-FILE to
5073 * changed the severity of several compiler warnings from full WARNING
5074 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5075 compiler note reporting so that it doesn't use the condition system
5076 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5077 COMPILE-FILE command)
5078 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5079 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5080 no longer supported, since their implementation was deeply intertwingled
5081 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5082 * removed bogus "support" for compiler macros named (SETF FOO), and
5083 removed the compiler macro for SETF INFO (but only after making a fool
5084 of myself on the cmucl-imp mailing list by posting a bogus patch for
5085 DEFINE-COMPILER-MACRO..)
5086 * Compiled files containing forms which have side effects on the Lisp
5087 reader (such as DEFPACKAGE forms) are now handled more correctly.
5088 (Compiler queuing of top level lambdas has been suppressed by setting
5089 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5090 * deleted various currently-unused source files, e.g. gengc.lisp. They
5091 may be added back at some point e.g. when porting to other architectures,
5092 but until they are it's distracting to distribute them and to try to
5094 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5095 there were so many of them they're just distractions, and UNCROSS is
5096 known to be able to handle the current sources
5097 * moved PROFILE functionality into TRACE, so that it will be clear
5098 how the wrapping and unwrapping of functions when you profile them
5099 interacts with the wrapping and unwrapping of functions when you
5100 trace them. (Actually, the functionality isn't there yet, but at least
5101 the interface specification is there. Hopefully, the functionality will
5102 arrive with some future maintenance release.)
5103 * removed host-oops.lisp
5104 * changed signature of QUIT function to allow UNIX-CODE argument
5105 * fixed READ-SEQUENCE bug
5106 * tweaked verbose GC output so that it looks more like the progress
5107 output that ANSI specifies for functions like LOAD
5108 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5109 * added <http://sbcl.sourceforge.com> to the banner information printed by