1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
4 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
5 allows the compiler to safely elide boundedness checks for special
7 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
8 the symbol, prohibits both lexical and dynamic binding. This is mainly an
9 efficiency measure for threaded platforms, but also valueable in
11 * optimization: compiler now generates faster array typechecking code.
12 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
14 * optimization: multidimensional array accesses in the absence of type
15 information regarding array rank are approximately 10% faster due to
16 open coding of ARRAY-RANK.
17 * documentation: CLOS slot typechecing policy has been documented.
18 * bug fix: potential miscompilation of array stack allocation on x86 and
19 x86-64. (reported by Time Tossavainen)
20 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
21 result in their subforms being treated as top level forms. (reported by
23 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
24 than a machine register could leave garbage in the high bits of the
25 result register (bug 316325).
26 * bug fix: disable address space randomization Linux/x86-64 as well,
27 not just x86-64. (reported by Ken Olum)
28 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
29 generate incorrect code.
30 * bug fix: #201; type inference for CONS and ARRAY types could derive
31 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
32 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
33 could not be assigned to or bound with PROGV. (reported by Lorenz
35 * bug fix: the value of CL:- in the inspector was the previous expression
36 evaluated rather than the expression being evaluated.
37 * bug fix: constants can no longer be locally declared special.
39 changes in sbcl-1.0.28 relative to 1.0.27:
40 * a number of bugs in cross-compilation have been fixed, with the ultimate
41 result that building under (at least) clisp should be much more reliable.
42 * minor incompatible changes: echo-streams now propagate unread-char to the
43 underlying input stream, and no longer permit unreading more than one
45 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
46 frames, allowing for instance more reliable backtraces.
47 * improvement: the debugger REPL can now reference lexical variables
48 by name directly for code compiled with (DEBUG 3).
49 * improvement: errors from malformed declarations now have better source
50 paths associated with them. (thanks to Tobias Rittweiler)
51 * optimization: faster local calls on x86/x86-64
52 * bug fix: some error messages for out-of-bound array indexes confused the
53 index and the bound. (thanks to Stas Boukarev)
54 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
56 * bug fix: running regressions tests in shells without OSTYPE set now works.
57 (reported by Harald Hanche-Olsen)
58 * bug fix: more robust static space exhaustion signalling from
59 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
60 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
61 docstring away instead of storing it under names such as (LAMBDA (X)).
62 (reported by Leslie Polzer)
63 * bug fix: timers could go off in the wrong order, be delayed indefinitely
64 (thanks to Ole Arndt for the patch)
65 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
66 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
67 potentially-invalid effective methods in its cache.
68 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
69 instances as well (thanks to Paul Khuong)
70 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
71 SB-POSIX:WAITPID and their C equivalents.
72 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
74 changes in sbcl-1.0.27 relative to 1.0.26:
75 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
76 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
77 * improvement: the system either recovers from stack exhaustion or dies
78 properly as opposed to leaving the user uncertain of whether the handler
79 trampled on some random memory next to the stack or having to rely on
80 --lose-on-corruption (which is still a good idea to use in production
81 because stack exhaustion can happen in signal handlers which will likely
83 * bug fix: fix gc related interrupt handling bug on ppc (regression from
84 1.0.25.37, reported by Harald Hanche-Olsen)
85 * bug fix: work around signal delivery bug in darwin (regression from
86 1.0.25.44, reported by Sidney Markowitz)
87 * bug fix: fix ERROR leaking memory (reported by David Thompson)
89 changes in sbcl-1.0.26 relative to 1.0.25:
90 * incompatible change: an interruption (be it a function passed to
91 INTERRUPT-THREAD or a timer function) runs in an environment where
92 interrupts can be enabled. The interruption can use
93 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
94 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
95 potentially running out of stack. Keep in mind that in the absence
96 of WITHOUT-INTERRUPTS some potentially blocking operation such as
97 acquiring a lock can enable interrupts.
98 * incompatible change: GC-OFF and GC-ON are removed, as they were
99 always unsafe. Use WITHOUT-GCING instead.
100 * new feature: runtime option --disable-ldb
101 * new feature: runtime option --lose-on-corruption to die at the
102 slightest hint of possibly non-recoverable errors: running out of
103 memory, stack, alien stack, binding stack, encountering a memory
104 fault, etc. In the absence of --lose-on-corruption a warning is
106 * enhancement: detect binding stack exhaustion
107 * enhancement: detect alien stack exhaustion on x86/x86-64
108 * improvement: generally more stable and reliable interrupt handling
109 * improvement: there is a per thread interruption queue,
110 interruptions are executed in order of arrival
111 * improvement: a repeating timer reschedules itself when the it has
112 finished, but expiration times are spaced equally. If an
113 expiration time is in the past it will trigger after a short grace
114 period that may give a chance to other things to run.
115 * optimization: slightly faster gc on multithreaded builds
116 * optimization: faster WITHOUT-GCING
117 * bug fix: when JOIN-THREAD signals an error, do it when not holding
118 important locks so that the debugger/handler doesn't produce
119 recursive errors or deadlock.
120 * bug fix: real-time signals are not used anymore, so no more
121 hanging when the system wide real-time signal queue gets full.
122 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
124 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
125 * bug fix: fix random memory faults related to interrupts on alpha
126 * bug fix: fix random memory faults related to interrupts on sparc
127 * bug fix: fix deadlocks related to starting threads
128 * bug fix: fix deadlines on locks on futex platforms
129 * bug fix: restore errno in signal handlers
130 * bug fix: fix deadlocks related to hash tables
131 * bug fix: fix deadlocks in pcl
133 changes in sbcl-1.0.25 relative to 1.0.24:
134 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
135 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
136 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
137 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
138 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
139 better name and does not return values so stale on multiprocessor systems.
140 Also, HOLDING-MUTEX-P was added for about the only sane usage of
142 * improvement: unithread builds keep track of MUTEX-VALUE.
143 * improvement: reading from a TWO-WAY-STREAM does not touch the output
144 stream anymore making it thread safe to have a concurrent reader and
145 a writer, for instance, in a pipe.
146 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
147 arguments, making compiler-macros for SETF-functions able to inspect
148 their constant arguments.
149 * improvement: COMPILE-FILE reports times with millisecond accuracy
150 (thanks to Luis Oliveira)
151 * optimization: CHAR-CODE type derivation has been improved, making
152 TYPEP elimination on subtypes of CHARACTER work better. (reported
153 by Tobias Rittweiler, patch by Paul Khuong)
154 * bug fix: setting alien structure fields of type struct by value now
155 computes the right offset for the memory copy.
156 * bug fix: compilation problem involving inlined calls to aliens with
157 result type VOID. (reported by Ken Olum)
158 * bug fix: #235a; sequential inline expasion in different policies no
159 longer reuses the functional from the previous expansion site.
160 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
161 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
162 * bug fix: named ENUMs in multiply-referenced alien record types no longer
163 cause an implied type redefinition. Regression from 1.0.21.29.
164 * bug fix: sign-extension of small signed return values now works with C
165 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
166 * improvements to the Windows port:
167 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
168 Westfold, thanks to Rudi Schlatte)
170 changes in sbcl-1.0.24 relative to 1.0.23:
171 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
172 vector of a multidimensional SIMPLE-ARRAY.
173 * new feature: the system now signals a continuable error if standard
174 readtable modification is attempted. (thanks to Tobias Rittweiler)
175 * new feature: DIRECTORY has been extended with a non-standard keyword
176 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
177 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
178 has been robustified and documented better. (thanks to Robert Goldman)
179 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
180 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
181 * tradeoff: constant FORMAT control strings are now compiled unless
182 SPACE > SPEED (previously only when SPEED > SPACE.)
183 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
185 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
187 * bug fix: lexical type declarations are now correctly reported by
188 SB-CLTL2. (reported by Larry D'Anna)
189 * bug fix: STRING-TO-OCTETS did not handle :START properly when
190 using UTF-8 as external format. (thanks to Luis Oliveira)
191 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
192 are signalled correctly. (thanks to Stas Boukarev)
193 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
194 designator. (thanks to Tobias Rittweiler)
195 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
196 designator, and returns T instead of the function. (thanks to
198 * bug fix: direct superclasses of STANDARD-CLASS and
199 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
200 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
201 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
202 when no class with the named slot yet exists no longer causes a
203 compile-time style-warning.
204 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
205 in safe code. (reported by Didier Verna)
206 * bug fix: #430; nested structure constructors can stack allocate.
207 * bug fix: on some 64-bit platforms dynamic space size was truncated
208 to #xffff0000 bytes. (reported by Benjamin Lambert)
209 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
210 REPL unusable. (reported by Daniel Herring)
211 * bug fix: return values of READ-SEQUENCE did not take :START into
212 account on file streams, regressions since 1.0.12.22. (reported by
213 Thomas Russ, patch by Paul Khuong)
214 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
215 method specializer used to confuse permuation vector optimization.
216 * bug fix: system inserted bogus implicit type declarations for local
217 special variables in DEFMETHOD bodies.
218 * bug fix: #354; duplicated frames in backtraces due to
219 non-tail-call-optimized XEPs to functions with return type NIL
221 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
222 initializes structure object slots according to DEFSTRUCT initforms,
223 and DEFSTRUCT forms :INCLUDEind structure classes defined using
224 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
225 (reported by Bruno Haible and Stephen Wilson)
226 * bug fix: #395; fill-pointer output streams used now support
227 element-type BASE-CHAR as well.
228 * bug fix: compiler error when attempting to derive return value of
229 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
231 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
233 * bug fix: Mac OS X binaries should now be portable between Leopard
236 changes in sbcl-1.0.23 relative to 1.0.22:
237 * enhancement: when disassembling method functions, disassembly
238 for the associated fast function is also produced.
239 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
241 * optimization: printing with *PRINT-PRETTY* true is now more
242 efficient as long as the object being printed doesn't require
243 special handling by the pretty printer.
244 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
245 now interact correctly with type declarations.
246 * partial bug fix: PCL detects infinite recursion during wrapper
247 validation. (thanks to Attila Lendvai)
248 * bug fix: #426; nested function calls are inlined properly.
249 Previously if FOO was an inline function, in calls of the form
250 (FOO (FOO ...)) the outer call was not inlined.
251 * bug fix: long long arguments passed in registers to alien
252 functions on PowerPC Linux and NetBSD are now handled correctly
253 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
255 changes in sbcl-1.0.22 relative to 1.0.21:
256 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
257 for the shared object in the current directory, but passes the native
258 namestring of the designated pathname to the operation system's shared
259 object loading function as-it.
260 * minor incompatible change: --disable-debugger toplevel option now takes
261 effect before processing of initialization files and --eval or --load
263 * new feature: new commandline argument: --script, which supports
264 shebang lines. See documentation for details. (based on work by
266 * new feature: SAVE-LISP-AND-DIE can save current values of
267 --dynamic-space-size and --control-stack-size in the executable core,
268 causing it to skip normal runtime option processing. See documentation
269 for details. (thanks to Zach Beane)
270 * enhancement: inoccous calls to EVAL or generic functions dispatching
271 on subclasses of eg. STREAM no longer cause compiler notes to appear.
272 * enhancement: the system no longer resignals errors from --load and
273 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
274 associated with the original error to be lost. (thanks to Ariel
276 * enhancement: :DONT-SAVE keyword argument has been added to
277 LOAD-SHARED-OBJECT for controlling interaction with
278 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
279 the effects of an earlier LOAD-SHARED-OBJECT call.
280 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
281 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
282 provided. (reported by Cedric St-Jean)
283 * bug fix: circularity handling in the reader did not treat raw
284 structure slots correctly. (reported by Cedric St-Jean)
285 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
286 file descriptors when there were none.
287 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
288 was broken. (reporteed by Willem Broekema)
289 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
290 pathnames without a directory.
291 * bug fix: COMPILE-FILE did not warn about undefined variable
292 references at toplevel, and LOAD of the resulting fasl did
294 * bug fix: functions with non-required arguments used to end up with
295 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
296 * bug fix: redefining a function with non-required arguments didn't
297 update the system's knowledge about its call signature properly.
298 * bug fix: fixed #431; incompatible alien record type redefinitions
299 are detected and handled. (reported by Neil Haven)
300 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
301 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
303 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
304 after alien stack frames.
305 * bug fix: strings passed to mk{s,d}temp lacked null termination
307 changes in sbcl-1.0.21 relative to 1.0.20:
308 * new feature: the compiler is able to track the effective type of a
309 generic function across method addition and removal.
310 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
311 appropriately typed structure slots without locking.
312 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
313 information like those gathered by TIME using a programming-friendly
315 * new feature: TIME reports time taken even if the form performs a
316 non-local transfer of control.
317 * enhancement: reduced conservativism on GENCGC platforms: on
318 average 45% less pages pinned (measured from SBCL self build).
319 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
320 mutate constant symbols or violate declaimed type of the symbol.
321 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
322 sleeping on the semaphore in heavily contested semaphores.
323 * bug fix: semaphores and condition variables were not interrupt
325 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
326 owned by other threads anymore.
327 * bug fix: FIND on lists called KEY outside the specified
328 subsequence. (reported by budden)
329 * bug fix: LOG doesn't use single-float intermediate results when
330 given mixed integer and double-float arguments, leading to better
331 precision. (reported by Bob Felts)
332 * bug fix: LOG with base zero returned values of inconsistent type.
334 changes in sbcl-1.0.20 relative to 1.0.19:
335 * minor incompatible change: OPTIMIZE qualities
336 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
337 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
338 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
339 * documentation: some slot access efficiency guidelines have been
340 added to the user manual.
341 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
342 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
343 as ASSOC and MEMEBER.
344 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
345 to more efficient EQ-comparison versions more often.
346 * optimization: enhanced derivation of DOLIST iteration variable type
348 * optimization: constant folding of simple (LIST ...) forms as DOLIST
350 * optimization: runtime lookup of function definitions can be
351 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
352 * optimization: compiler is able to derive the return type of
353 (AREF (THE STRING X) Y) as being CHARACTER.
354 * optimization: CLRHASH on empty hash-tables no longer does pointless
355 work. (thanks to Alec Berryman)
356 * optimization: REPLACE deftransforms don't punt when :START1 or
358 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
359 no longer emits a code deletion note. (reported by Andrew
361 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
362 functions with an odd number of &OPTIONAL arguments, a &REST
363 argument, and one or more &KEY arguments at the call site.
364 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
365 arguments appeared at call sites as well.
366 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
367 READ-LINE &co can no longer read from them afterwards. (reported
369 * bug fix: fixed #427: unused local aliens no longer cause compiler
370 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
372 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
373 alien-stack leakage. (reported by Andy Hefner)
374 * bug fix: PROGV signals an error when an attempt to violate declared
375 type of a variable or bind a constant is made.
376 * bug fix: SET signals an error when an attempt to violate declared
377 type of a variable is made.
378 * bug fix: restart computation during the execution of a restart
379 test function no longer causes infinite recursion. (reported by
381 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
382 signals an error. (thanks to Pierre Mai)
383 * bug fix: EXPORT left symbol unexported in conflict situations.
384 (thanks to Michael Weber)
385 * bug fix: correctly handle name conflicts involving CL:NIL.
386 (thanks to Michael Weber)
387 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
388 conflicts arising from USEing package with conflicting symbols
389 correctly. (thanks to Michael Weber)
391 changes in sbcl-1.0.19 relative to 1.0.18:
392 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
393 warnings that go otherwise unhandled will be muffled if they are
394 of the type that's the value of this variable.
395 * optimization: stack allocation is slightly more efficient on x86
397 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
398 where a raw slot always is initialized using the initform whose
399 type is not know sufficiently well a compile-time are now compiled
400 correctly. (reported by John Morrison)
401 * bug fix: compiler no longer makes erronous assumptions in the
402 presence of non-foldable SATISFIES types.
403 * bug fix: stack analysis missed cleanups of dynamic-extent
404 arguments in non-let-converted calls to local functions.
405 * improvements to the Windows port:
406 ** adjusted address spaces for building on both Win32 and
407 Win64. (thanks for John Connors)
408 * fixed some bugs revealed by Paul Dietz' test suite:
409 ** interval arithmetic during type derivation used inexact integer
410 to single-float coercions.
411 ** arithmetic operations involving large integers and single
412 floats give the same results in compiled and interpreted code.
413 ** deriving the result type of COERCE no longer signals an error
414 if the derived type of the second argument is a MEMBER type
415 containing invalid type specifiers.
416 ** ADJOIN with constant NIL as second argument works correctly.
417 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
419 changes in sbcl-1.0.18 relative to 1.0.17:
420 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
421 profiles only the current thread.
422 * minor incompatible change: changes to SYMBOL-VALUE of constants
423 defined with DEFCONSTANT now signal an error.
424 * enhancement: SB-SPROF now has support for wallclock profiling,
425 and is also able to profile specific threads. REPORT output
426 has also additional sorting options.
427 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
429 * optimization: structure allocation has been improved
430 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
431 ** out of line constructors are ~10% faster.
432 ** inline constructors are ~15% faster.
433 ** inline constructors are capable of dynamic extent allocation
434 (generally on x86 and x86-64, in some cases on other platforms
436 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
438 * optimization: file compiler is now able to coalesce non-circular
439 lists, non-base strings, and bit-vectors. Additionally, constants
440 are never referenced through SYMBOL-VALUE at runtime.
441 * optimization: code defining methods on PRINT-OBJECT (and other
442 generic functions in the COMMON-LISP package) now loads faster.
443 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
445 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
446 fasl is now deleted. (reported by Attila Lendvai)
447 * bug fix: READ-LINE always returned NIL for the last line in files.
448 (reported by Yoshinori Tahara)
449 * bug fix: more accurate disassembly annotations of foreign function
450 calls. (thanks to Andy Hefner)
451 * bug fix: trimming non-simple strings and non-string string
452 designators when the there is nothing to trim works properly.
453 (thanks to James Knight)
454 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
455 (thanks to Travis Cross)
456 * fixed some bugs revealed by Paul Dietz' test suite:
457 ** NIL is a valid function name (regression at 1.0.13.38)
458 ** FILL on lists was missing its return value (regression at 1.0.12.27)
459 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
460 fill pointers properly (regression at 1.0.12.23)
461 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
462 displacement indices properly (regression at 1.0.12.23)
464 changes in sbcl-1.0.17 relative to 1.0.16:
465 * temporary regression: user code can no longer allocate closure
466 variable storage on stack, due to bug 419 without explicitly
467 requesting it. Please consult sbcl-devel for advice if you need to
468 use this feature in the meanwhile.
469 * new feature: runtime argument --control-stack-size can be used to
470 adjust thread default control stack size.
471 * enhancement: improved TIME output
472 ** all times are reported using the measured accuracy (milliseconds
473 for real and GC times, microseconds for everything else.)
474 ** processor cycle counts on x86 and x86-64.
475 ** interpreted forms are counted for both evaluator modes.
476 ** number of lambdas converted by the compiler is reported.
477 ** CPU percentage report (computed from real and total run time.)
478 ** more comprehensive run time reporting, using a condenced format
479 ** interperted form, lambda, and page fault counts are omitted
481 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
483 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
484 * optimization: two argument forms of LAST are upto ~10% faster
485 in normal SPEED policies.
486 * optimization: NCONC no longer needs to heap cons its &REST list
487 in normal SPEED policies.
488 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
490 * bug fix: UNION and NUNION work with :TEST-NOT once more,
491 regression since 1.0.9.1. (thanks to Eric Marsden)
492 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
493 since 1.0.15.36. (thanks to Paul Khuong)
494 * bug fix: LAST when always returned the whole list when given a bignum
495 as the second argument.
496 * bug fix: dynamic extent allocation of nested lists and vectors
497 could leak to otherwise accessible parts.
498 * bug fix: invalid optimization of heap-allocated alien variable
500 * bug fix: fasl header checking is less vulnerable to different
501 platform word lengths.
502 * bug fix: more correct assembler syntax for GNU binutils
503 2.18.50.0.4 support. (thanks to Marijn Schouten)
504 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
506 * bug fix: the fopcompiler can handle LOCALLY forms (with no
507 declarations) successfully. (reported by Attila Lendvai)
509 changes in sbcl-1.0.16 relative to 1.0.15:
510 * minor incompatible change: revert the changes to sb-posix's error
511 signaling added in 1.0.14.
512 * minor incompatible change: change PROBE-FILE back to returning
513 NIL whenever we can't get a truename, as was the case before 1.0.14.
514 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
515 inherits from ERROR instead of just CONDITION.
516 * new feature: SB-INTROSPECT can provide source locations for instances
517 as well. (thanks to Tobias Rittweiler)
518 * optimization: binding special variables now generates smaller code
519 on threaded platforms.
520 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
521 and cases where no :TEST is given but the compiler can infer that
522 the element to search is of type (OR FIXNUM (NOT NUMBER)).
523 * optimization: better LOGNOT on fixnums.
524 * optimization: modular arithmetic for a particular requested width
525 is implemented using a tagged representation unless a better
526 representation is available.
527 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
528 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
529 for wellformedness and returns a specialized vector. (reported by
530 Francois-Rene Rideau)
531 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
532 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
533 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
534 unscheduling timer at the same time as another timer fires.
535 * bug fix: don't reschedule timers for dead threads.
536 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
537 * bug fix: copying output from RUN-PROGRAM to a stream signalled
538 bogus errors if select() was interrupted.
539 * enhancement: add support for fcntl's struct flock to SB-POSIX.
541 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
542 * enhancement: cleaner backtraces for interactive interrupts, as
543 well as other cases where the interesting frames used to be
544 obscured by interrupt handling frames.
545 * enhancement: untracing a whole package using (UNTRACE "FOO") is
546 now supported, and tracing a whole package using (TRACE "FOO") now
547 traces SETF-functions as well.
548 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
549 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
550 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
551 * unreadably printed representation of hash-tables now includes
553 * bug fix: partially fixed #188: type propagation from assignments
554 is now more efficient.
555 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
556 'DOUBLE-FLOAT) are not flushable.
557 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
558 full address of the object, and none of the tag bits.
559 * bug fix: readably printing hash-tables now respects other printer
560 control variables. (reported by Cedric St-Jean)
561 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
562 keyword with MAKE-HASH-TABLE.
563 * bug fix: export SB-POSIX:MKSTEMP.
564 * bug fix: SORT was not interrupt safe.
565 * bug fix: XREF accounts for the last node of each basic-block as
567 * bug fix: MAKE-INSTANCE optimizations interacted badly with
568 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
569 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
570 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
571 create obsolete instances in the case of redefinition or
572 obsoletion of a superclass. (thanks to Andy Hefner)
573 * bug fix: Support for the Alpha architecture has been revived; it had
574 suffered somewhat from lack of maintenance since sbcl-1.0.
575 * improvements to the Windows port:
576 ** The system detects the codepage to use at startup, instead of
577 using the value from the saved core. (thanks to Kei Suzuki)
579 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
580 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
581 (see documentation for details.)
582 * revived support for OpenBSD (contributed by Josh Elsasser)
583 * partially fixed bug #108: ROOM no longer suffers from occasional
584 (AVER (SAP= CURRENT END)) failures.
585 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
586 bodies no longer cause a WARNING to be signalled. (reported by
588 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
589 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
590 the bug in TRUNCATE.) (reported by Michael Weber)
591 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
592 no samples. (reported by Andy Hefner)
593 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
594 no longer appear as (NIL ...) frames in backtraces.
595 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
596 is now actually exported from SB-EXT as documented. (reported by
598 * bug fix: sb-aclrepl now correctly understands how to inspect
599 single-floats on 64-bit platforms where single-floats are not boxed.
600 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
601 yet been finalized. (reported by Levente Meszaros)
602 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
603 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
604 SBCL-specific optimize qualities.
606 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
607 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
608 an executable in the search path, and does so in the child
609 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
610 been removed; it can be found in the CVS history, for somebody who
611 needs that search behavior (see the manual).
612 * minor incompatible change: compiler policy re. weakening type
613 checks has changed: now type checks are weakened only if SAFETY < 2
615 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
616 unparsing of directory pathnames as files. Analogously,
617 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
618 filename to parse into a directory pathname.
619 * enhancement: implicit generic function creation now signals a
620 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
621 users can bind handlers for and muffle around calls to LOAD.
622 * enhancement: RUN-PROGRAM allows unicode arguments and environments
623 to be used (using the default stream external format), and allows
624 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
625 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
626 strings and vectors whose element-type or simplicity is not fully
627 known at compile-time.
628 * optimization: STRING-TRIM and related functions no longer allocate
629 a new string when no trimming needs to be performed. These functions
630 are also faster than before when the input string has been declared
632 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
633 * optimization: READ-LINE is significantly faster for files containing
635 * optimization: non-open coded uses of character comparison operators
636 (e.g. char=) no longer cons when called with more than one parameter
637 on platforms supporting dynamic-extent allocation.
638 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
639 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
640 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
642 * bug fix: some sequence functions elided bounds checking when
644 * bug fix: too liberal weakening of union-type checks when SPEED >
646 * bug fix: more bogus fixnum declarations in ROOM implementation
649 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
650 * new feature: MAKE-HASH-TABLE now experimentally accepts a
651 :SYNCHRONIZED argument, which makes the hash-table safe for
652 concurrent accesses (but not iteration.) See also:
653 SB-EXT:WITH-LOCKED-HASH-TABLE, and
654 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
655 * optimization: CONCATENATE on strings is an order of magnitude faster
656 in code compiled with (> SPEED SPACE).
657 * optimization: SUBSEQ is ~50% faster on lists.
658 * bug fix: bug 417 fixed -- source location reporting is now more robust.
659 * bug fix: SUBSEQ on a list will now correctly signal an error if if
660 END is smaller then START.
661 * bug fix: SB-PROFILE will no longer report extra consing for nested
662 calls to profiled functions.
663 * bug fix: ROOM implementation had bogus fixnum declarations which
664 could cause type-errors when calling ROOM on large images.
665 * bug fix: if file compilation is aborted, the partial fasl is now
666 deleted, and COMPILE-FILE returns NIL as the primary value.
667 * bug fix: number of thread safety issues relating to SBCL's internal
668 hash-table usage have been fixed.
669 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
670 be returned from its body when the values were being returned
671 using unknown-values return convection and the W-P-O was wrapped
672 inside an UNWIND-PROTECT.
673 * bug fix: sb-posix should now compile again under Windows, enabling
676 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
677 * incompatible change: hash-table accessor functions are no longer
678 automatically protected by locks. Concurrent accesses on the same hash-table
679 from multiple threads can give inconsistent results or even corrupt the
680 hash-table completely. Multi-threaded applications should do their own
681 locking at the correct granularity. In the current implementation it is
682 still safe to have multiple readers access the same table, but it's not
683 guaranteed that this property will be maintained in future releases.
684 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
685 and will signal an error at runtime.
686 * enhancement: SB-THREAD package now exports a semaphore interface.
687 * enhancement: CONS can now stack-allocate on x86 and
688 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
690 * enhancement: nested lists can now be stack allocated on
691 platforms providing stack allocation support.
692 * enhancement: dynamic-extent support has been extended to support
693 cases where there are multiple possible sources for the stack
695 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
696 if the mutex is uncontested on Linux.
697 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
698 as specified by the CLHS. (thanks to Tobias Rittweiler)
699 * bug fix: NaN comparison now works on x86-64.
700 * bug fix: CLOSE :ABORT T on a stream with pending output now
702 * bug fix: instances of non-standard metaclasses using standard
703 instance structure protocol sometimes missed the slot type checks
705 * bug fix: known functions can be inlined in high-debug code.
707 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
708 * minor incompatible change: the MSI installer on Windows no longer
709 associates .lisp and .fasl files with the installed SBCL.
710 * minor incompatible change: :UNIX is no longer present in *FEATURES*
711 on Windows. (thanks to Luis Oliviera)
712 * new feature: SB-CLTL2 contrib module now implements
713 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
714 * optimization: scavenging weak pointers is now more efficient,
715 requiring O(1) instead of O(N) per weak pointer to identify
716 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
717 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
718 method bodies using constant slot-names when the first argument is
719 a specializer parameter for the method.
720 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
721 names, when the class of the instance is a direct instance
722 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
723 as slow as the constant slot-name case.)
724 * optimization: member type construction is now O(N) instead
726 * optimization: UNION and NUNION are now O(N+M) for large
727 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
729 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
730 now more readable in environments like Slime which display it.
731 (thanks to Tobias C. Rittweiler)
732 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
733 was able to infer the correct argument type for the object on which
734 the CAS operation was being performed.
735 * bug fix: copy propagation interfered with parallel assignment
736 semantics in local calls. (reported by Paul Khuong)
737 * bug fix: the signed modular fixnum shift compiled to wrong code on
738 x86 and x86-64. (spotted by a slight modification to some of
741 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
742 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
743 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
744 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
746 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
747 and generic function now print the object identity for anonymous
748 instances. (thanks to Attila Lendvai)
749 * enhancement: as an extension to MOP, SBCL now supports SETF of
750 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
751 (thanks to Attila Lendvai)
752 * enhancement: sb-cover has an alternate annotation mode which puts
753 the form annotations at the car of the form, instead of annotating
754 it completely. The benefit of this mode is that it shows better
755 which forms were instrumented by the compiler.
756 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
757 by printer control variables. (reported by Dan Corkill)
758 * bug fix: system leaked memory when delayed output was performed by
759 the OS in smaller chunks then expected. (thanks to David Smith)
760 * bug fix: system leaked memory when file streams were not closed
762 * bug fix: large objects written to slow streams that were modified
763 after the write could end up with the modified state written to
764 the underlying file descriptor.
765 * bug fix: multiple threads operating in parallel on the same stream
766 could cause buffer-overflows.
767 * bug fix: source location information is stored correctly
768 (broken since 1.0.6). This bug would generally show up as the
769 Slime debugger highlighting the wrong form when the sldb-show-source
771 * bug fix: Branch forms are again annotated as branches in the sb-cover
773 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
774 on x86-64. (reported by Gregory Vanuxem)
775 * bug fix: EQUALP could return wrong results for structures with raw
776 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
777 word). (reported by Vjacheslav Fyodorov)
778 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
781 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
782 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
783 atomic compare-and-swap operations on threaded platforms.
784 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
785 allows assigning a global minimum value to optimization qualities
786 (overriding proclamations and declarations).
787 * enhancement: closed over variables can be stack-allocated on x86
789 * performance bug fix: GETHASH and (SETF GETHASH) are once again
791 * optimization: slot definition lookup is now O(1). This speeds up
792 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
793 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
794 * optimization: ASSOC and MEMBER can now be open-coded for all
795 combinations of keyword arguments when second argument is constant
796 and SPEED >= SPACE. In other cases a specialized version is
798 * bug fix: using obsoleted structure instances with TYPEP and
799 generic functions now signals a sensible error.
800 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
801 (reported by Kristoffer Kvello)
802 * bug fix: backtrace construction is now more careful when making
803 lisp-objects from pointers on the stack, to avoid creating bogus
804 objects that can be seen by the GC.
805 * bug fix: defaulting of values in contexts expecting more than 7
806 variables now works on x86-64. (reported by Christopher Laux)
807 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
809 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
810 as the property-list of a symbol.
811 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
812 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
813 situations requested, are once again file-compileable. (reported
816 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
817 * MOP improvement: support for user-defined subclasses of
818 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
819 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
820 the expansion of DEFMETHOD, is responsible for generating a form
821 which creates a list of specializers when evaluated. Additional
822 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
823 debugging and introspective support.
824 * minor incompatible change: the (unsupported) spinlock interface
825 has changed: free spinlock now has the value NIL, and a held spinlock
826 has the owning thread as its value.
827 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
828 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
830 * enhancement: name of a socket-stream is now "a socket" instead of
832 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
833 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
834 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
835 for generic functions. (Thanks to Tobias C. Rittweiler)
836 * optimization: bignum printing speed has been improved by 20-40%
837 (depending on the bignum size.)
838 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
840 * bug fix: the cache used by the CLOS to store precomputed effective
841 methods, slot offsets, and constant return values is now thread and
843 * bug fix: generic function dispatch function updating is now thread
844 and interrupt safe (in the sense that the known issues have been
846 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
847 * bug fix: interning EQL-specializers is now thread and interrupt safe.
848 * bug fix: asdf systems with dependencies to the SB-POSIX or
849 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
850 * bug fix: interrupt safety of applicable method computation has been
853 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
854 * new contrib: sb-cover, an experimental code coverage tool, is included
856 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
857 significantly faster.
858 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
859 produce more efficient code on x86-64 if the compiler can determine
860 that (+ INDEX <constant>) does not require a bounds check and FOO
861 has an element type at least 8 bits wide.
862 * enhancement: a new, experimental synchronous timeout facility is
863 provided. Refer to SB-SYS:WITH-DEADLINE for details.
864 * enhancement: when a symbol name conflict error arises, the
865 conflicting symbols are always printed with a package prefix.
866 (thanks to Kevin Reid)
867 * enhancement: stepping is now once again supported on the SPARC and
868 MIPS platforms. (It is also now more likely to work on CheneyGC
870 * enhancement: sb-sprof can now also track and report accurate call
872 * bug fixes: the treatment of non-standard subclasses of
873 SB-MOP:SPECIALIZER is more correct.
874 * incompatible change: PURIFY no longer copies the data from the
875 dynamic space into the static and read-only spaces on platforms
876 that use the generational garbage collector
877 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
879 * bug fix: GC race condition occasionally resulting in crashes with
880 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
882 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
884 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
885 a STYLE-WARNING to be signalled (regression from 1.0.4.)
886 * bug fix: an asynchronous interrupt could previously leave the
887 system running with GC inhibited.
888 * bug fix: a DECLARE form evaluated at top-level now causes an error
889 rather than silently (or verbosely) returning NIL.
890 * bug fix: trying to dissassemble functions compiled at high DEBUG could
891 result in a error being signalled due to source form lookup errors.
892 (reported by Peter Graves)
894 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
895 * incompatible change: removed writer methods for host-ent-name,
896 host-ent-addresses -- changing the values did not update the DNS
898 * minor incompatible change: changed experimental JOIN-THREAD interface
899 * documentation: the manual now lists reader and writer methods
900 in class slot documentation sections. (thanks to Richard M Kreuter)
901 * documentation: unwinding from asyncronous events has been
902 documented as unsafe.
903 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
904 in multithreaded application code.
905 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
906 platforms. (thanks to James Anderson for the optimization hint)
907 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
909 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
910 variants no longer cons.
911 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
912 their NOT- variants no longer cons.
913 * optimization: EQUAL hash tables no longer use SXHASH for objects
914 of all data types, but instead use an EQL hash for types for which
915 EQUAL is the same as EQL.
916 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
917 are significantly faster.
918 * optimization: new STRING-OUTPUT-STREAM implementation is much
919 faster for large outputs and conses 30% less on average.
920 * enhancement: XREF information is now collected for references made
921 to global variables using SYMBOL-VALUE and a constant argument.
922 * enhancement: SIGINT now causes a specific condition
923 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
924 * bug fix: FILE-POSITION used to signal an error in some cases where
925 ANSI requires it to return NIL.
926 * bug fix: ADJUST-ARRAY is now interrupt-safe.
927 * bug fix: adding and removing fd-handlers is now interrupt-safe.
928 * bug fix: inlined calls to C now ensure 16byte stack alignment on
930 * bug fix: bad type declaration in the CLOS implementation has
931 been fixed. (reported by James Anderson)
932 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
933 (thanks to Lutz Euler)
934 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
935 required by the CLHS. (reported by Samium Gromoff)
936 * bug fix: dead unbound variable references now signal an error.
937 (reported by Marco Monteiro)
938 * bug fix: / with an unused value was being deleted in safe code.
939 (thanks to Marco Monteiro and Kevin Reid)
940 * bug fix: number of characters that can be written onto a single
941 line in a file is unlimited.
942 * bug fix: some GC deadlocks caused by asynchronous interrupts have
943 been fixed by inhibiting interrupts for when GC is disabled.
944 * bug fix: some interrupt safety issues with GETHASH, (SETF
945 GETHASH), CLRHASH and REMHASH have been fixed.
946 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
947 specifier no longer causes infinite recursion.
948 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
949 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
950 * bug fix: an &environment argument with the correct variable information
951 is passed to macros that are expanded during byte compilation.
952 (reported by Samium Gromoff)
953 * bug fix: a logic error was causing the hash function for bignums to
954 have excessive amounts of collisions. (reported by Faré Rideau)
955 * bug fix: modifying the contents of an array could change the return
956 value of SXHASH on that array, which is only allowed for strings
957 and bit vectors. (bug introduced in 0.9.16)
958 * improvement: the x86-64/darwin port now passes all tests (except
959 for the debugger tests) but should still be considered
960 experimental until this is fixed.
961 * improvement: a style-warning is signaled for CASE (etc) clauses with
962 duplicate keys. (thanks to Kevin Reid)
963 * improvement: macos/x86 and macos/x86-64 now use mach exception
964 handlers for dealing with illegal instructions (for trapping and
965 error handling) and memory protection violations (for GC).
967 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
968 * new platform: experimental support for x86-64/darwin (MacOS).
969 * incompatible change: the thread-safe (on most platforms) getaddrinfo
970 and getnameinfo sockets functions are used instead of gethostbyaddr
971 and gethostbyname, on platforms where the newer functions are available.
972 As a result, the ALIASES field of HOST-ENT will always be NIL on these
974 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
975 don't print the startup banner, but behave as if --noinform was passed
976 as a command line argument. (thanks to Kevin Reid)
977 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
978 * optimization: code using alien values with undeclared types is much faster.
979 * optimization: the compiler is now able to open code SEARCH in more cases.
980 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
981 * bug fix: using standardized COMMON-LISP special variables as loop
982 variables no longer signals bogus package lock violations. (reported
984 * bug fix: declaring local loop variables to be of a range-limited type
985 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
986 (reported by Andras Simon)
987 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
988 bugs remain on x86-64.)
989 * bug fix: the #= and ## reader macros now interact reasonably with
990 funcallable instances.
991 * bug fix: type-checks for function arguments were compiled using the
992 compiler policy settings of the wrong lexical environment (in 1.0.2
994 * bug fix: SHADOW accepts characters as string designators, as required
995 by the spec (thanks to Eric Marsden)
996 * bug fix: fixed GC safety issues when foreign functions are called with
997 non-base strings as arguments
998 * bug fix: more consistent error output for fatal-compiler-warnings, like
1000 * bug fix: functions with proper names were showing up as NIL in
1001 backtraces (reported by Edi Weitz, regression in 1.0.2)
1003 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1004 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1005 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1006 produce more efficient code on the x86 if the compiler can determine
1007 that (+ INDEX <constant>) does not require a bounds check and FOO
1008 has an element type at least 8 bits wide.
1009 * bug fix: references to undefined variables are handled the same way
1010 in toplevel forms as in the normal compiler
1011 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1013 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1014 (thanks to Jon Buller)
1015 * improvement: faster compilation times for complex functions
1016 * improvement: added readlink support to SB-POSIX (thanks to Richard
1019 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1020 * improvement: experimental support for mach exception handling on
1021 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1023 * improvement: support for GBK external format.
1024 (thanks to Chun Tian (binghe))
1025 * improvement: the debugger now displays variables that have been closed
1026 over, in code compiled with (DEBUG 2) or higher
1027 * improvement: support for executable cores on NetBSD (thanks to
1029 * new feature: added a RESTART-FRAME debugger command
1030 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1031 be used to provide an implementation for FILE-POSITION on Gray streams
1032 (thanks to Eric Marsden)
1033 * new feature: add syslog, openlog and closelog support to SB-POSIX
1034 (thanks to Richard Kreuter)
1035 * optimization: the function call overhead in code compiled with
1036 a high DEBUG optimization setting is significantly
1037 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1038 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1039 (thanks to Tony Martinez)
1040 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1041 evaluated once (reported by Kevin Reid)
1042 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1043 works again (thanks to Kilian Sprotte)
1044 * bug fix: an error is signaled for tagbodies with duplicate tags
1045 (thanks to Stephen Wilson)
1046 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1047 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1048 stack frames from alien callbacks.
1049 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1050 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1051 65k pages (thanks to David Woodhouse)
1052 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1054 changes in sbcl-1.0.1 relative to sbcl-1.0:
1055 * new platform: FreeBSD/x86-64, including support for threading.
1056 * new feature: the compiler stores cross-referencing information
1057 about function calls (who-calls), macroexpansion (who-macroexpands)
1058 and special variables (who-binds, who-sets, who-references) for code
1059 compiled with (< SPACE 3). This information is available through the
1060 sb-introspect contrib.
1061 * new feature: users may subclass SEQUENCE, and have instances of
1062 these classes interoperate with standard Common Lisp functions if
1063 a number of methods are defined. (This feature is experimental
1064 and the interface subject to change based on feedback from SBCL
1065 users and the general community)
1066 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1067 x86/x86-64, rather than the previous fixed depth of 8
1068 * improvement: another pthread back-end of mutex "pthread-futex".
1069 * bug fix: non-ascii command-line arguments are processed correctly
1070 (thanks to Yaroslav Kavenchuk)
1071 * bug fix: non-required arguments were not passed correctly when a method
1072 defined using DEFMETHOD was called from a mop-generated method using
1073 CALL-NEXT-METHOD (reported by Pascal Costanza)
1074 * bug fix: recursion is now permitted in accessors through
1075 SLOT-UNBOUND. (reported by Pascal Costanza)
1076 * bug fix: an error was signaled at startup if the HOME environment
1077 variable was defined, but had an empty value (reported by Peter Van Eynde)
1078 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1079 signal a PROGRAM-ERROR, not a BUG.
1080 * bug fix: SB-POSIX:READDIR works when built with large file support.
1081 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1083 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1084 for better automatic indentation support. (thanks to Matt Pillsbury)
1085 * optimization: loading generic functions no longer takes O(n^2) time,
1086 proportional to the amount of methods in the generic function
1087 (reported by Todd Sabin and Jeremy Brown)
1088 * optimization: the FIND and POSITION family of sequence functions
1089 are significantly faster on arrays whose element types have been
1091 * improvements to the Windows port:
1092 ** Intermittent heap corruption problems have been fixed. (thanks
1093 to Alastair Bridgewater)
1094 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1096 ** Lisp is able to unwind foreign exception frames from alien
1097 callbacks. (thanks to Alastair Bridgewater)
1099 changes in sbcl-1.0 relative to sbcl-0.9.18:
1100 * improvement: experimental support for threading on FreeBSD/x86.
1101 (thanks to NIIMI Satoshi)
1102 * improvement: runtime option --dynamic-space-size can be used
1103 to set the size of the dynamic space reserved on startup.
1104 * improvement: floating point modes in effect are now saved in
1105 core, and restored on startup.
1106 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1107 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1108 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1109 threads are not running after *SAVE-HOOKS* have run.
1110 * improvement: writes to CLOS instance slots are type-checked in code
1111 compiled with (SAFETY 3)
1112 * improvement: floating-point exception handling on FreeBSD (thanks to
1114 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1115 (thanks to Zach Beane)
1116 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1118 * improvement: added support for the Shift-JIS external format.
1119 (contributed by NIIMI Satoshi)
1120 * improvement: callbacks are supported on Linux/PPC. (thanks to
1122 * bug fix: compiler bug triggered by a (non-standard) VALUES
1123 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1124 * bug fix: file compiler no longer confuses validated and already
1125 dumped structurres. (reported by Kaersten Poeck)
1126 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1127 fill-pointer signals a type-error as required. (thanks to
1129 * bug fix: disassemly of funcallable instances works.
1130 * bug fix: single stepping on PPC.
1131 * bug fix: fix thread-safety problems in the type system (generally
1132 manifesting as nonsensical errors like "STRING is a bad type specifier
1133 for sequences" or "The value 1 is not of type FIXNUM")
1134 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1135 (reported by Josip Gracin)
1136 * bug fix: an error is signaled for attempts to displace arrays with
1137 incompatible element types (thanks to Mario Mommer)
1138 * bug fix: more correct handling of wide characters in debug info
1139 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1140 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1141 and don't cause extra consing
1142 * optimization: MAP and MAP-INTO are significantly faster on vectors
1143 whose elements types have been declared.
1144 * Improvements to SB-SPROF:
1145 ** Support for allocation profiling
1146 ** Reduced profiling overhead, especially for long profiling runs
1147 * Improvements to the Windows port:
1148 ** floating point exceptions are now reported correctly.
1149 ** stack exhaustion detection works partially.
1150 ** more accurate GET-INTERNAL-REAL-TIME.
1151 ** better RUN-PROGRAM behaviour in case of errors in the child
1153 ** PROBE-FILE now simplifies pathnames correctly.
1154 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1155 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1156 1st 1970 (although time timezone data will be unreliable).
1157 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1159 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1160 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1161 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1163 * bug fix: two potential GC deadlocks affecting threaded builds.
1164 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1165 returns T (reported by Anton Kazennikov)
1166 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1167 with non-variable places
1168 * bug fix: remove a race condition in the setting of
1169 funcallable-instance functions, this should make threaded CLOS
1170 code more stable against memory faults.
1171 * bug fix: corruption of specials when unbinding is interrupted by an
1172 asynchronous unwind (reported by Hannu Koivisto)
1173 * improvement: the debugger will now also display local variables that
1174 are only used once, for code compiled with a DEBUG optimization quality
1177 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1178 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1179 * incompatible change: External-format support for FFI calls. The
1180 SB-ALIEN:C-STRING no longer implies an ASCII
1181 external-format. Instead the string is subject to external-format
1182 conversion. Additionally return values of type SB-ALIEN:C-STRING
1183 are by default of type (SIMPLE-ARRAY CHARACTER), not
1184 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1185 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1186 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1187 * incompatible change: SB-EXT package no longer contains the
1188 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1189 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1191 * incompatible change: the single-stepper is no longer available
1192 on Alpha, Mips and Sparc platforms.
1193 * minor incompatible change: the direct superclasses of
1194 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1195 not (STANDARD-OBJECT FUNCTION). This makes the
1196 class-precedence-lists of GENERIC-FUNCTION and
1197 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1199 * minor incompatible change: the default stream external format on
1200 non-unicode SBCL is no longer detected from the locale, but is always
1202 * new feature: Add a version of evaluator that uses an interpreter instead
1203 of the compiler. EVAL still uses the compiler by default, to switch it
1204 to use the interpreter, set the value of the variable
1205 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1206 * minor incompatible change: the single-stepper REPL has been merged
1207 with the normal debugger (see the "Stepping" heading of the debugger help
1208 for more details). The debugger command STEP will no longer switch
1209 to the single-stepper REPL.
1210 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1211 for a type now works.
1212 * bug fix: loading of default sysinit file works. (thanks to Leonid
1214 * bug fix: better detection of circularities in the file-compiler.
1215 (reported by Marco Monteiro)
1216 * bug fix: the CL pathname functions now work with files that have
1217 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1218 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1219 systems with Unix98 pty semantics.
1220 * bug fix: ASDF-INSTALL will now work with bsd tar.
1221 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1223 * bug fix: timers expiring in dead threads no longer cause a
1224 type-error (reported by Paul "Nonny Mouse").
1225 * bug fix: thanks to more lightweight single-stepper instrumentation,
1226 code compiled with (DEBUG 3) will compile and execute significantly faster,
1227 and will have more accurate type-inferencing than before
1228 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1229 whose bindings are modified
1230 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1231 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1232 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1233 CL:SOFTWARE-VERSION with proper version
1235 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1236 * feature: implemented the READER-METHOD-CLASS and
1237 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1238 as specified by AMOP.
1239 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1241 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1242 (thanks to Lutz Euler)
1243 * optimization: hashing of general arrays and vectors has been
1244 improved. (reported by Any Fingerhut)
1245 * enhancement: SB-INTROSPECT is now able to find definitions of
1246 profiled functions. (thanks to Troels Henriksen)
1247 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1248 as well, allowing compiler-macros for SETF-functions to expand.
1249 * enhancement: step-instrumentation no longer wraps known
1250 single-value functions with multiple-value context, allowing
1251 better type inference.
1252 * fixed bug #337: use of MAKE-METHOD in method combination now works
1253 even in the presence of user-defined method classes. (reported by
1254 Bruno Haible and Pascal Costanza)
1255 * fixed bug #339(c): if there are applicable methods not part of any
1256 long-form method-combination group, call INVALID-METHOD-ERROR.
1257 (reported by Bruno Haible)
1258 * fixed bug #361: the :FUNCTION initarg in the protocol for
1259 initialization of methods can now be used to override
1260 internally-produced optimized functions. (reported by Bruno
1262 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1263 system-provided lambda expression no longer cause warnings about
1264 unbound #:|pv-table| symbols.
1265 * bug fix: improved the handling of type declarations and the
1266 detection of violations for keyword arguments with non-constant
1268 * bug fix: potentially erronous calls to PATHNAME and
1269 MERGE-PATHNAMES were being flushed in some cases.
1270 (reported by Richard Kreuter)
1271 * bug fix: compiled calls to TYPEP were mishandling obsolete
1272 instances. (reported by James Bielman and Attila Lendvai)
1273 * bug fix: format strings with ~> without matching ~< no longer
1274 trigger an AVER, but signal an understandable error instead.
1275 (reported by Antonio Martinez)
1276 * bug fix: specifying an output-file without a pathname-type for
1277 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1278 of input-file instead of "fasl". (reported by Robert Dodier)
1279 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1280 (reported by James Y Knight).
1281 * bug fix: compiler-macros-function did not consider the environment
1282 argument for shadowing by local functions.
1283 * bug fix: compiler-macros expansion was inhibited by local INLINE
1285 * bug fix: inline expansions of known functions were subject to
1286 step-instrumentation in high debug policies, leading to problems
1287 with type-inference.
1288 * bug fix: compiler failed to differentiate between different CONS
1289 types in some cases.
1290 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1291 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1292 * bug fix: #368: incorrect use of expressed vs. upgraded array
1294 * bug fix: #306a: more precise unions of array types.
1295 * thread-safety improvements:
1296 ** CONDITION-WAIT could return early on Linux, if the thread was
1297 interrupted and subsequently continued with SIGCONT.
1298 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1300 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1301 * added support for the ucs-2 external format. (contributed by Ivan
1303 * minor incompatible change: pretty printing of objects of type
1304 (cons symbol) is, in the default pprint-dispatch-table, now
1305 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1307 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1308 called later in a class's lifetime, possibly as late as when the
1309 first instance of the class is created. Previously,
1310 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1311 class became finalizeable.
1312 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1313 for multibyte external-format streams. (thanks to "vbzoli")
1314 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1315 with :ALLOCATION :CLASS inherited from superclasses of the
1317 * fixed bug: anonymous classes can now be created using the :NAME
1318 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1319 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1320 * fixed bug: core-files saved with :EXECUTABLE T can again be
1321 executed when SBCL_HOME isn't set. (reported by James Knight)
1322 * fixed bug: toplevel LOCALLY forms with declarations could
1323 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1324 * fixed bug: printing from several different threads using different
1325 values of *print-case* could cause invalid output, due to
1326 some internal special variables of the printer not being bound
1327 thread-locally (reported by Max Mikhanosha)
1328 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1329 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1330 (reported by Pascal Costanza)
1331 * fixed bug: FINALIZE-INHERITANCE is called from
1332 REINITIALIZE-INSTANCE on classes when the class has previously
1333 been finalized, as required by AMOP.
1334 * minor code generation optimizations:
1335 ** better register allocation in CLOS dispatching functions
1336 ** overflow detection when coercing signed bytes to fixnums on x86-64
1337 ** is now implemented with one IMUL instruction instead of three shifts
1338 ** more efficient bit-vector access on x86 and x86-64
1339 ** more efficient access to raw structure slots on x86 and x86-64
1340 * fixed some bugs revealed by Paul Dietz' test suite:
1341 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1342 return its argument.
1344 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1345 * feature: thread support on Solaris/x86, and experimental thread support
1347 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1349 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1350 default method for SLOT-UNBOUND.
1351 * minor incompatible change: prevent the user from specializing the
1352 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1353 somewhat counter to the intent of the protocol, I (CSR) think, and
1354 additionally it just doesn't work in SBCL as currently
1355 implemented, thanks to optimizations (that are always valid for
1356 the other three SLOT-VALUEish functions, but not for the setter).
1357 * minor incompatible change: the :SB-LDB feature is now enabled by
1358 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1359 the low-level debugger.
1360 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1361 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1362 down to an SB-SYS:FD-STREAM, allowing direct communication in
1363 more cases. Temporary files and pipes are still used as a fallback
1365 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1366 on the non-reentrant C functions localtime(3) and gmtime(3).
1367 * bug fix: global optimization policy was not visible in LOCALLY and
1369 * bug fix: class objects can be used as specializers in methods.
1370 (reported by Pascal Costanza)
1371 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1372 with a type error. (reported by blitz_ on #lisp)
1373 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1374 failed with a type error. (reported by Pascal Bourguignon)
1375 * bug fix: merging pathnames against defaults with :DIRECTORY
1376 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1377 (reported by James Y Knight)
1378 * bug fix: saving large (>2GB) cores on x86-64 now works
1379 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1380 constant index and a (simple-array (signed-byte 32)) array
1381 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1382 error (patch by Robert J. Macomber)
1383 * feature: TIME now displays the amount of run-time spent in GC
1384 * bug fix: The debugger now does a better job of respecting
1385 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1386 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1387 workaround for bug 403.)
1388 * bug fix: floating point exception handling now works on FreeBSD
1389 (thanks to NIIMI Satoshi)
1390 * fixed some bugs revealed by Paul Dietz' test suite:
1391 ** MISC.641: LET-conversion were not supposed to work in late
1393 * improvements to the Win32/x86 port:
1394 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1395 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1397 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1398 * new feature: source path information is generated for macro-expansion
1399 errors for use in IDE's like Slime (thanks to Helmut Eller)
1400 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1401 * bug fix: compiler does not loop forever on an invalid type in
1403 * improvement: compilation of most CLOS applications is significantly
1405 * optimization: added a limited bytecode compiler for simple toplevel
1406 forms, speeding up compilation and FASL loading
1407 * bug fix: the statistical profiler now properly distinguishes anonymous
1410 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1411 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1412 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1413 into subclasses of the finalized class. Now user calls to
1414 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1415 system return before any subclasses are finalized.
1416 * minor incompatible change: The reader no longer ignores errors
1417 regarding non-existent packages in #+ and #- feature tests.
1418 * new feature: command line options --no-sysinit, --no-userinit to
1419 inhibit loading the corresponding init files
1420 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1421 for sending data through UDP sockets (thanks to François-René Rideau)
1422 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1423 error is signalled instead (thanks to François-René Rideau)
1424 * minor incompatible change: Error signalling behaviour of lexical
1425 operations violating package locks has changed slightly. Refer to
1426 documentation on package locks for details.
1427 * enhancement: EVAL can process IF-expressions without resorting to the
1429 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1430 constant-folded properly due to missing out-of-line functions.
1431 (reported by Mika Pihlajamäki)
1432 * bug fix: LISTEN sometimes returned T even in cases where no data was
1433 immediately available from the stream
1434 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1435 were reversed. (reported by Levente Mészáros)
1436 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1437 when given a vector displaced to an adjustable array. (reported
1439 * bug fix: derivation of float boundaries from numbers outside the
1440 appropriate float range (reported by John Wiseman)
1441 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1443 * bug fix: precomputing cache entries for generic functions with
1444 some subclasses of specializers as yet invalid does not attempt to
1445 fill a cache line with a negative offset. (reported by Levente
1447 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1448 allow condition class objects as arguments to DOCUMENTATION and
1449 (SETF DOCUMENTATION); only find and set documentation for
1450 structure names for the STRUCTURE doc-type. (suggested by Gary
1452 * improvements to the Win32/x86 port:
1453 ** (user-homedir-pathname) and default initialization file
1454 locations now know about the user's "Documents and Settings"
1455 directory (thanks to Yaroslav Kavenchuk)
1456 ** run-program is implemented (thanks to Mike Thomas)
1457 ** sockets support (thanks to Timothy Ritchey)
1458 ** better backtrace support (thanks to Alastair Bridgewater)
1459 ** sb-grovel supported
1460 ** asdf-install and sb-posix work somewhat
1461 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1462 * improvements to the Solaris/x86 port:
1463 ** works on Solaris 11/Solaris Express
1464 ** floating-point exception handling support
1465 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1466 * fixed some bugs revealed by Paul Dietz' test suite:
1467 ** REMOVE-METHOD returns its generic function argument even when
1468 the method is not one of the generic functions' methods.
1469 ** objects declared as MEMBER types can be admissible arguments to
1470 structure accessors.
1471 ** printing characters should simply be printed by the FORMAT ~:C
1473 ** compiler failure when compiling functions with hairy constant
1474 defaults for optional parameters.
1475 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1476 function, which is already optimized.
1478 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1479 * new platform: experimental support for SBCL x86/Darwin, including
1480 MacOS X 10.4.5 on Intel.
1481 * new feature: Unicode character names are now known to the system
1482 (through CHAR-NAME and NAME-CHAR).
1483 * new feature: the filesystem location of SBCL's core file is
1484 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1485 * minor incompatible change: the contrib modules SB-POSIX and
1486 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1487 this change is to make it easier to distribute
1488 location-independent binaries.
1489 * bug fix: as implied by AMOP, standardized classes no longer have
1490 slots named by external symbols of public packages. (reported by
1492 * optimization: calling functions via constant symbols -- as in
1493 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1494 via the function object as in (FUNCALL #'FOO).
1495 * optimization: on x86 and x86-64, the calling convention for the
1496 case of dealing with an unknown number of values has been altered
1497 to be friendlier to the prediction heuristics implemented,
1498 particularly with reference to CALL and RET pairing. (thanks to
1499 Alastair Bridgewater)
1500 * optimization: on x86, the code for access to thread-local symbol
1501 values and binding/unbinding of thread-local symbols is smaller.
1502 (thanks to Alastair Bridgewater)
1503 * enhancement: CONSTANTP is now able to determine constantness of
1504 more complex forms, including calls to constant-foldable standardized
1505 functions and some special forms beyond QUOTE.
1506 * fixed bug: occasional GC crashes on Solaris/x86
1507 * optimization: x86-64 supports stack allocation of results of simple
1508 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1509 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1510 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1511 (thanks to James Knight)
1512 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1513 by the standard (thanks to Stephen Compall)
1515 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1516 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1517 be used for bundling the runtime and the core file into one
1518 executable binary. This feature is not currently supported on all SBCL
1519 platforms. (thanks to James Bielman and NIIMI Satoshi)
1520 * new feature: a generational or ephemeral garbage collector is now
1521 the default on the PowerPC platform (both Linux and Darwin). The
1522 old Cheney (stop and copy) collector is a build-time option.
1523 (thanks to Cyrus Harmon, after Raymond Toy)
1524 * minor incompatible change: the method by which SBCL finds its
1525 contributed modules has changed; it no longer relies on symbolic
1526 links from an $SBCL_HOME/systems directory, but searches directly
1527 in the subdirectories of $SBCL_HOME.
1528 * enhancement: the dynamic heap size on the Linux/PPC platform is
1529 markedly larger, even using the older Cheney garbage collector.
1530 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1531 certain complicated string types. (reported by Gary King)
1532 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1533 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1534 * fixed bug: DOCUMENTATION on structures no longer signals an
1535 error if no structure type of the right name exists. (reported by
1537 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1538 applicable non-standard primary or :AROUND method on
1539 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1540 no longer cause unbound variable errors. (reported by Kevin Reid)
1541 * fixed bug: metacircle resolution in cases where methods have slots
1542 added before the slots from STANDARD-METHOD. (reported by Jean
1544 * fixed bug: the Power PC assembly code for calling into lisp
1545 sometimes computed its return address wrongly (depending on the
1546 15th bit of the address, fixed at link time). This used to
1547 manifest itself in a segmentation violation while building PCL.
1548 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1549 many others over the years)
1550 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1551 the stack pointer (treated as a signed integer) is negative.
1552 (thanks to Peter van Eynde)
1554 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1555 * new platform: experimental support for the Windows operating
1556 system has been added. (thanks to Alastair Bridgewater)
1557 * fixed several bugs in and robustified the PPC FFI (including
1558 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1559 * bug fix: allow non-simple string symbol names (reported by Paul
1561 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1563 * bug fix: saving a core corrupted callbacks on x86/x86-64
1564 * bug fix: closed a loophole in metacircularity detection and
1565 grounding in the PCL implementation of CLOS.
1566 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1567 (reported by tomppa on #lisp)
1568 * bug fix: clear the direction flag on Lisp -> C transitions, as
1569 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1570 (reported by Andrej Grozin and Hendrik Maryns)
1571 * optimization: major improvements to GC efficiency on GENCGC platforms
1572 * optimization: faster implementation of EQUAL
1573 * optimization: emit more efficient opcodes for some common
1574 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1575 * optimization: several other minor code-generation improvements on x86-64
1576 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1578 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1579 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1580 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1581 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1582 by ANSI as a generic function, and for consistency (SETF
1583 GENERIC-FUNCTION-NAME) is treated likewise.
1584 * fixed bug #233.b: make constraint propagation notice when a variable
1585 value is changed after it is referenced but before it is used
1586 * fixed bug #296: no more arbitrary behaviour from filenames with
1587 odd characters as --load arguments. (reported by Adam Warner)
1588 * fixed bug #390: :CHARACTER-SET pathname components now work as
1589 expected. (reported by Tim Daly Jr)
1590 * fixed bug #391: complicated :TYPE intersections in slot
1591 definitions no longer cause an error in PCL internals.
1592 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1593 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1594 returning the number of octets which would be written to the
1595 file-stream. (thanks to Robert J. Macomber)
1596 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1597 arguments to the internal stream functions. (thanks to David
1599 * bug fix: stack exhaustion is now handled on the x86/SunOS
1600 platform. (thanks to Daisuke Homma)
1601 * bug fix: more accurate ROOM results on GENCGC platforms
1602 * optimization: improved type inference for arithmetic-for
1603 index variables in LOOP
1604 * optimization: faster floating-point SQRT on x86-64
1605 * fixed some bugs revealed by Paul Dietz' test suite:
1606 ** DOCUMENTATION returns NIL instead of "" for method combinations
1607 that don't have a docstring
1609 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1610 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1611 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1612 therefore are not customizeable by user code (as seems to be at
1613 least permitted and maybe required by AMOP). As a consolation,
1614 however, the SBCL implementation of these functions now calls
1615 REINITIALIZE-INSTANCE as specified by AMOP.
1616 * bug fix: slot-definition documentation is propagated as per ANSI
1617 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1618 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1619 argument, as do eslotd initialization methods. (from Pascal
1620 Costanza's "Closer" project)
1621 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1622 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1624 * bug fix: it is now possible to have more than one subclass of
1625 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1626 (reported by Bruno Haible, Pascal Costanza and others)
1627 * bug fix: the dependent update protocol now works for generic
1628 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1629 and Pascal Costanza)
1630 * bug fix: condition-class instances corresponding to
1631 DEFINE-CONDITION forms are now created eagerly. (reported by
1632 Kalle Olavi Niemitalo on comp.lang.lisp)
1633 * bug fix: floating point printing is more accurate in some
1634 circumstances. (thanks to Simon Alexander)
1635 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1636 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1637 * bug fix: callbacks on OS X now preserve stack-alignment.
1638 (thanks to Cyrus Harmon)
1639 * enhancement: the x86-64 disassembler is much better at
1640 disassembling SSE instructions. (thanks to Lutz Euler)
1641 * enhancement: CHECK-TYPE on a variable now allows type-inference
1642 (thanks to Vincent Arkesteijn)
1643 * optimization: improved performance of EUC-JP external format.
1644 (thanks to NIIMI Satoshi)
1645 * optimization: performance improvements to IO on file streams of
1646 :ELEMENT-TYPE CHARACTER
1647 * optimization: much faster memory allocation on x86-64
1648 * optimization: faster garbage collections (latency and throughput)
1650 * optimization: faster bignum subtraction and division on x86 and x86-64
1651 (thanks to Lutz Euler)
1652 * optimization: more accurate type-inference for loops that use a
1653 floating point index variable or a negative step.
1655 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1656 * bug fix: add a workaround to SBCL looping infinitely at startup on
1657 Linux kernels with apparently buggy implementations of personality().
1658 (thanks to Svein Ove Aas)
1659 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1660 (thanks to David Lichteblau)
1661 * bug fix: local bindings shadow global symbol macros for
1662 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1663 * optimization: non-open coded uses of numeric comparison operators
1664 (e.g. >) no longer cons when called with more than one parameter
1665 on platforms supporting dynamic-extent allocation.
1666 * enhancement: saving cores with foreign code loaded is now supported
1667 on MIPS/Linux in addition to the previously supported platforms.
1668 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1669 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1670 * bug fix: division by zero in sb-sprof when no samples were collected
1671 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1672 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1673 (thanks to Alexander Kjeldaas)
1674 * new feature: ignoring the return values of destructive functions
1675 like NREVERSE signals a compile-time style-warning.
1676 (thanks to Kevin Reid)
1677 * new feature: the alignment of alien structure fields can be
1678 explicitly specified. (thanks to Cyrus Harmon)
1679 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1680 and dump core on SIGQUIT
1682 ** incompatible change: threads do not inherit values of specials
1683 from their parents (see manual)
1684 ** bug fix: threads stacks belonging to dead threads are freed by the
1685 next exiting thread, no need to gc to collect thread stacks anymore
1686 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1687 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1688 ** bug fix: dynamic variable and thread start related gc lossage
1689 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1691 * fixed some bugs revealed by Paul Dietz' test suite:
1692 ** SUBTYPEP is slightly more accurate on heinously complicated
1693 CONS types where some of the members have uncertain (in the
1694 NIL, NIL sense) type relationships to each other.
1696 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1697 no longer purified unless :PURIFY T is explicitly specified.
1698 ** Non-purified cores are significantly smaller than before
1700 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1701 * new feature: timers based on Zach Beane's excellent timer package
1702 * added support for the following external formats: koi8-u,
1703 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1704 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1705 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1706 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1707 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1708 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1709 * incompatible change: a threaded SBCL will no longer revert to
1710 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1711 * bug fix: interrupts are disabled until startup is complete; no
1712 more sigsegvs when receiving a signal to soon
1713 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1715 * bug fix: add a workaround for the memory randomization features in
1716 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1717 workaround will only be in effect on systems with the proc filesystem
1719 * bug fix: printing objects of type HASH-TABLE signals a
1720 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1722 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1723 have been running for over 50 days. (reported by Gilbert Baumann)
1724 * bug fix: the logic for getting names of functions gets less
1725 confused when confronded with alternate-metaclass
1726 funcallable-instances. (reported by Cyrus Harmon)
1727 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1728 consistent, even on internal alternate-metaclass objects.
1729 * bug fix: flush closure information collected by physical
1730 environment analysis prepass before the main pass. (bug reported
1732 * bug fix: compiler pack phase does not modify a hashtable, which is
1733 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1734 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1735 may be expanded. (reported by Alexander <malishev> on c.l.l)
1736 * bug fix: no more style-warnings when compiling code using LAST
1737 under high-SPEED low-SPACE settings. (reported by David Wallin
1739 * fixed some incompatibilities between SBCL's MOP and the MOP
1741 ** the METAOBJECT class is now implemented;
1742 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1743 STANDARD-OBJECT, as required;
1744 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1745 now compatible (as required by VALIDATE-SUPERCLASS); there
1746 remains a consistency requirement over the presence or absence
1747 of the FUNCTION class in the superclass list of finalized
1748 classes; see the manual for more details;
1749 ** the :AROUND method for COMPUTE-SLOTS on
1750 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1751 requested slot ordering.
1753 ** bug fix: parent thread now can be gc'ed even with a live
1755 ** bug fix: binding a special with PROGV to no value is not
1756 the same as that symbol not having been bound (thanks to
1758 ** bug fix: binding specials is thread safe (thanks to
1760 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1761 and SB-SPROF do not die with 'no handler for signal XX in
1762 interrupt_handle_now(..)' anymore
1763 ** bug fix: WITH-TIMEOUT works with multiple running threads
1764 * fixed some bugs revealed by Paul Dietz' test suite:
1765 ** ENSURE-GENERIC-FUNCTION should take a method class object for
1766 the :method-class keyword argument.
1768 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
1769 * new port: the Solaris operating system on x86 processors is now
1770 mostly supported, though some rough edges in the environment
1771 remain. (thanks to Daisuke Homma)
1772 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
1773 space for its heap. (thanks to Thiemo Seufer)
1774 * optimization: SBCL on MIPS platforms now supports dynamic-extent
1775 closures. (thanks to Thiemo Seufer)
1776 * minor incompatible change: eof selects abort in the debugger.
1777 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
1778 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
1780 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
1781 deprecated, and will go away in a future revision of SBCL.
1782 * minor incompatible change: GC-ON and GC-OFF are no longer
1783 implemented with a counter, it does not matter how many times gc
1784 is switched on or off
1785 * bug fix: discriminating functions for generic function classes
1786 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
1787 make invalid assumptions about method precedence order. (reported
1789 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
1790 platforms. (thanks to Thiemo Seufer)
1791 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
1792 * bug fix: correct pathname printing with printer escaping is on.
1793 (thanks to Kevin Reid)
1794 * bug fix: complex VOP definitions in "user-space" no longer trigger
1795 package locks. (reported by Zach Beane)
1796 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
1797 for funcallable-instance functions, and is no different from
1799 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
1800 characters in the current readtable. (reported by Nicholas Neuss)
1801 * bug fix: SUBTYPEP on various CONS types returns more a more
1802 accurate acknowledgment of its certainty.
1803 * optimizations: REMOVE-DUPLICATES now runs in linear time on
1804 lists in some cases. This partially fixes bug 384.
1805 * flush all standard streams before prompting in the REPL and the
1807 * bug fix: signal handling and triggering gc do not conflict
1808 directly anymore, in particular a high frequency sb-sprof does
1809 not prevent gc from running
1810 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
1811 approximation for timezone and DST information between the
1812 universal time epoch and the smallest negative 32-bit time_t.
1813 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
1814 year 1899 so long as the encoded time is non-negative.
1815 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
1816 the correct answer for non-constant rotate amounts when performing
1817 an inline 32-bit rotation.
1819 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
1820 there is only one thread in the session
1821 ** bug fix: memory leak for streams created in one thread and
1822 written to in another
1823 ** bug fix: lockup when compiled with gcc4
1824 ** bug fix: race that allows the gc to be triggered when gc is
1826 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
1827 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
1829 ** bug fix: finished threads are gc'ed properly
1830 * fixed some bugs revealed by Paul Dietz' test suite:
1831 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
1832 has arguments with a different set of applicable methods from
1833 the orignal arguments.
1834 ** The type error thrown by MAP now has a correct expected-type
1836 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
1837 name a compiled function.
1838 ** Three MISC tests where a large bignum was improperly coerced to
1839 a float that couldn't represent that bignum during type
1840 derivation were fixed.
1841 ** SUBTYPEP can now handle types involving the negation of a
1842 list-form FUNCTION type.
1843 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
1844 as (COMPLEX (AND RATIO (NOT FIXNUM))).
1845 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
1847 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
1848 * New feature: Experimental support for bivalent streams: streams
1849 opened with :element-type :default now allow character and binary
1850 (unsigned-byte 8) I/O
1851 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
1852 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
1854 * bug fix: no more highly sporadic "couldn't check whether ~S is
1855 readable" when reading a stream and an interrupt hits in the middle
1856 of a select system call
1857 * compiler better recognizes complex arrays (reported by Eduardo
1859 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
1860 for variables on SBCL built with linkage-tables. (reported by Luis
1862 * various error reporting improvements.
1863 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
1864 (Thanks to Thiemo Seufer)
1865 * bug fix: nested reader invokations work correctly
1866 * bug fix: it is possible to have simultaneous references to foreign
1867 code and foreign data with the same name.
1869 ** added x86-64 support
1870 ** incompatible change: the threading api now works with thread
1871 objects instead of thread ids
1872 ** bug fix: threads are protected from signals and interruption when
1873 starting up or going down
1874 ** bug fix: a race where an exiting thread could lose its stack to gc
1875 ** bug fix: don't halt on infinite error in threads if possible
1876 ** fixed numerous gc deadlocks introduced in the pthread merge
1877 ** bug fix: fixed thread safety issues in read and print
1878 ** bug fix: debugger doesn't hang on session lock if interrupted at
1879 an inappropriate moment
1880 ** bug fix: run-program is now thread safe(r)
1881 ** bug fix: inner with-recursive-lock no longer releases the mutex
1882 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1883 * fixed some bugs revealed by Paul Dietz' test suite:
1884 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1885 EXPECTED-TYPE slots filled.
1886 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1888 ** MAKE-CONDITION accepts classes as type-designators.
1889 ** COMPILE may never return NIL.
1890 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1891 range before calling Unix time functions
1893 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1894 * numerous signal handling fixes to increase stability
1895 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1896 * minor incompatible change: we now correctly canonize default
1897 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1898 as per the MOP, rather than the historical (INITARG INITFUNCTION
1899 INITFORM). (reported by Bruno Haible)
1900 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1901 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1902 for more information.
1903 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1904 pathname is a directory pathname.
1905 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1906 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1908 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1909 :METACLASS argument in addition to a class name. (reported by
1910 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1911 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1912 (reported by Bruno Haible; patch from Gerd Moellmann)
1913 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1915 * bug fix: more cleanups to the floating point exception handling on
1916 x86-64 (thanks to James Knight)
1917 * bug fix: the compiler does not try to constant fold calls of
1918 COERCE and BIT-* functions when they return freshly constructed
1919 objects. (reported by Nikodemus Siivola and Paul Dietz)
1920 * optimization: improved the MIPS versions of generic (in the
1921 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1922 * optimization: direct conversion of (unsigned-byte 32) to floats on
1923 the PowerPC platform.
1924 * optimization: structure instances with raw slots now use less
1925 memory, and probably show better memory locality. (thanks to
1927 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1928 are treated as requests for stack allocation on the x86-64,
1929 Alpha-32, PPC and SPARC platforms.
1930 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1931 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1932 (thanks to Tony Martinez)
1934 ** gcing a dead thread can no longer lead to lockups
1935 ** threads block signals until they are set up properly
1936 ** errno is no longer shared by threads
1937 ** interrupt-thread restores the eflags register on x86
1938 ** fixed some lockups due to gc/thread interaction
1939 * fixed some bugs revealed by Paul Dietz' test suite:
1940 ** invalid dotted lists no longer raise a read error when
1941 *READ-SUPPRESS* is T
1942 ** signal an error if a symbol that names a declaration is used
1943 as the name of a type, or vice versa
1944 ** allow using the (declare (typespec var*)) abbreviation for
1945 (declare (type typespec var*)) with all type specifiers
1946 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1947 ** always return NIL from PPRINT-POP when OBJECT is NIL
1948 ** don't signal errors when pretty-printing malformed LABELS,
1949 FLET or MACROLET forms
1950 ** declarations in a DOLIST body are also in scope for the
1952 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1954 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1957 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1958 * fixed cross-compiler leakages that prevented building a 32-bit
1959 target with a 64-bit host compiler.
1960 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1961 opened with :IF-EXISTS :OVERWRITE.
1962 * fixed bug 281: error for an invalid qualifier in a short-form method
1963 combination method is not signalled until the faulty method is called.
1964 * bug fix: iteration variable type inferrer failed to deal with open
1965 intervals. (reported by Alan Shields)
1966 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1967 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1968 or more runtime options were provided to the sbcl binary.
1969 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1970 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1971 * optimization: there's now a fast-path for fixnum arguments in the
1972 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1973 * optimization: the code generated on x86-64 is more compact thanks
1974 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1975 * bug fix: floating-point exception handling now partly works on
1976 x86-64. (Thanks to James Knight)
1977 * improvement to the MIPS backend from Thiemo Seufer: C-style
1978 64-bit long long arguments and return values to alien functions
1980 * fixed some bugs revealed by Paul Dietz' test suite:
1981 ** the type-error signalled from WARN has a filled-in DATUM slot.
1982 ** the type-error required when a stream is not associated with
1983 a file has the stream as its datum.
1984 ** type-errors on single-floats on x86-64 no longer have
1985 :INVALID-OBJECT as the datum
1986 ** the type-errors signalled for invalid function names now have
1987 a correct expected type
1988 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1989 for structures defined with a :TYPE. Documentation strings for
1990 typed structures are no longer immediately discarded
1991 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1992 broadcast streams and synonym streams. FILE-LENGTH now also works
1993 on broadcast streams.
1995 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1996 * incompatible change: the --noprogrammer option, deprecated since
1997 version 0.7.5, has been removed. Please use the equivalent
1998 --disable-debugger option instead.
1999 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2001 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2002 inoperational for a while now) has been completely removed.
2003 * null lexical environments are now printed as #<NULL-LEXENV>,
2004 significantly reducing the amount of clutter in typical backtraces.
2005 * documentation on weak pointers, finalization, and after GC hooks
2006 has been added to the manual.
2007 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2008 as other specialized array types, is much faster. SUBSEQ and
2009 COPY-SEQ on such arrays have also been sped up.
2010 * optimization: EQL is now more efficient when at least other argument
2011 is known to be of type (OR FIXNUM (NOT NUMBER)).
2012 * fixed bug: the runtime is now less vulnerable to changes in the
2013 size of the SBCL object on OS X, and virtual memory is reserved for
2014 all spaces that need to be at a fixed address.
2015 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2016 * fixed bug: finalizers and after GC hooks that cause consing are now
2018 * fixed bug: compiler error messages and summaries are now printed to
2019 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2020 * fixed inference of the upper bound of an iteration variable.
2021 (reported by Rajat Datta).
2022 * fixed bug 211e: calling local functions with duplicated constant
2023 keyword argument no longer causes a bogus style warning about an
2025 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2026 ftype declaration to be disregarded. (reported by Dave Roberts)
2027 * fixed bug 373: caused by erronous compilation of references to alien
2028 variables in the runtime on ppc/darwin.
2029 * fixed bug 376: CONJUGATE type deriver.
2030 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2031 (reported by Baughn on #lisp)
2032 * a cross-compiler bug on non-x86 platforms has been identified and
2033 fixed. (thanks to Bruno Haible)
2034 * improvements to the MIPS runtime code for increased stability.
2035 (thanks to Thiemo Seufer)
2036 * increased the maximimum compact environment size to allow
2037 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2038 * partial workaround for bug 135: don't name the function we're
2039 calling for hairy cases of EVAL, so as not to accumulate one environment
2040 entry per call to EVAL. (reported by Kevin Reid)
2041 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2042 * optimization: type testing for non-vector arrays should be faster.
2043 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2045 * bug fix: setting 31st element of a bit vector to zero did not work
2047 * bug fix: redefining a class definition which failed due to a
2048 previous accessor / function clash now works (but see BUGS entry
2049 #380 for more problems in this area). (thanks to Zach Beane)
2050 * the long form of DEFINE-METHOD-COMBINATION disables method group
2051 checking when given a single method group with pattern *. (thanks
2053 * on x86 compiler supports stack allocation of results of simple
2054 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2055 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2056 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2057 * fixed some bugs related to Unicode integration:
2058 ** the restarts for recovering from input and output encoding
2059 errors only appear when there is in fact such an error to
2061 * fixed some bugs revealed by Paul Dietz' test suite:
2062 ** MISC.549 and similar: late transformation of unsafe type
2063 assertions into derived types caused unexpected code
2065 ** SCALE-FLOAT type deriver is less wrong.
2066 ** type derivers for EXP, LOG and similar functions compute result
2067 types for complex arguments better.
2068 ** (MISC.563) CONJUGATE type deriver works for very restricted
2070 ** out-of-line type testers for character strings are available.
2071 ** EQUAL compiler transform understands specialness of objects
2073 ** accessing double-floats stored on the stack now works on x86-64.
2074 ** debugger internals could sometimes create invalid lispobjs,
2075 resulting in GC crashes.
2076 ** MISC.548: type check weakening can convert required type into
2078 ** initialization forms for bindings are not in scope of free special
2081 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2082 * incompatible change: thread support for non-NPTL systems has
2083 been removed - locking is buggy and unreliable. A threaded
2084 SBCL build will now warn at startup and refuse to create
2085 new threads, unless futex support is detected in the kernel
2086 * incompatible change: the top level REPL now has only an ABORT
2087 restart associated with it, not TOPLEVEL and ABORT as it used to.
2088 TOP and TOPLEVEL are now available as debugger commands for
2089 returning to the top level.
2090 * incompatible change: forms evaluated in the REPL now use the
2091 global optimization policy.
2092 * incompatible change: user- and system-initialization files are
2093 no longer processed with LOAD, but by READ and EVAL; hence the
2094 global optimization policy, startup package, readtable, etc,
2096 * The .fasl file format number has been incremented because of
2097 various incompatible changes.
2098 * internal entry point details and argument counts no longer appear
2099 in backtraces unless explicitly requested by setting
2100 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2101 * built-in and standard functions no longer have names like "top
2102 level local call to FOO".
2103 * fixed bug 32: functions defined in non-null lexical environments
2104 now have more legible printed representation
2105 * fixed bug 33: functions defined in non-null lexical environemnts
2106 are now more amenable to inspection by INSPECT.
2107 * workaround for bug 354: XEPs no longer appear in backtraces unless
2108 explicitly requested.
2109 * fixed bug: receiving the signal which results from attempting to
2110 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2111 SIGBUS on other *BSDs) on architectures where the C stack is also
2112 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2113 to debugger confusion or wild instability. (reported by Cheuksan
2115 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2116 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2117 (reported by Lutz Euler)
2118 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2119 compiled code. (reported by Paul Dietz)
2120 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2121 specialized parameter to a method to something that is not TYPEP
2122 the specializer is now possible.
2123 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2124 face of package deletion.
2125 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2126 pathname. (reported by David Tolpin on c.l.l)
2127 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2128 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2129 STRING-STREAM and FILE-STREAM, respectively.
2130 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2131 than previously; in addition, its test suite is now run on build.
2132 (thanks to Luke Gorrie)
2133 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2134 * optimization: added a immediate representation for single-floats
2136 * fixed some bugs revealed by Paul Dietz' test suite:
2137 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2138 ** attempting to create a package with a colliding nickname causes
2139 correctable errors to be signalled.
2140 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2141 ** several x86-64 backend bugs related to sign-extension of immediate
2144 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2145 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2146 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2148 * fixed loading of multiply forward-referenced layouts.
2149 (thanks to Cheuksan Wang)
2150 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2151 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2152 (see COMPILE-FILE documentation for details of :PRINT option)
2153 * fixed bugs 19 and 317: fixed-format floating point printing is
2154 more accurate. This also fixes a bug reported by Adam Warner
2155 related to the ~@F format directive.
2156 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2158 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2159 dispatch table if the from-char is a dispatch macro character.
2160 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2161 by the wordsize no longer ignore the last word. (reported by Lutz
2163 * fixed bug in type checking of dynamic-extent variables. (reported
2165 * optimization: sequence traversal functions use their freedom to
2166 coerce function designators to functions.
2167 * optimization: code with many calls to CLOS methods specialized on
2168 CLOS classes has had redundant type checks removed.
2169 * optimization: added declarations to speed up operations that access
2170 the internal character database (for example STRING-UPCASE)
2171 * optimization: comparison operations between floats and sufficiently small
2172 fixnums no longer create extra rationals
2173 * fixed some bugs related to Unicode integration:
2174 ** portions of multibyte characters at the end of buffers for
2175 character-based file input are correctly transferred to the
2176 start of the buffer at the next read.
2177 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2178 passing it through to OPEN.
2179 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2180 argument given to internal calls to OPEN.
2181 ** the built-in comment readers (introduced by character sequences
2182 ";" and "#|") are more forgiving to encoding errors; they will
2183 STYLE-WARN and then attempt to resync the stream at a character
2184 boundary. (thanks to Teemu Kalvas)
2185 * fixed some bugs in the x86-64 port:
2186 ** Negative short int return values from c-calls are sign-extended
2188 ** The stack is aligned to 16-bytes for c-calls, as required by
2189 the ABI. (thanks to Cheuksan Wang)
2190 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2191 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2192 for enums. (thanks to Vincent Arkesteijn)
2193 ** Multiple small optimizations and bugfixes for floating point
2195 * fixed some bugs revealed by Paul Dietz' test suite:
2196 ** Space, Tab, Linefeed, Return and Page have the invalid
2197 secondary constituent character trait.
2198 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2200 ** WITH-INPUT-FROM-STRING should only update the index place on
2202 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2203 works more reliably.
2204 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2205 with one-dimensional arrays with fill pointers.
2206 ** TYPE-OF failed on a complex with an integer realpart and a
2208 ** compiler failure during type inference for the code of form
2209 (IF (EQL X (THE ...)) ...) (MISC.535).
2211 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2212 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2213 platform. The port supports 61-bit fixnums, large memory spaces
2214 and reloading shared object files.
2215 * enhancement: saving cores with foreign code loaded is now
2216 supported on ppc/Darwin in addition to the previously supported
2218 * enhancement: the statistical profiler now walks deeper into the
2219 call stack for more meaningful call-graphs and accrued time
2220 reports (x86/x86-64 only). It also now reports time spent in
2222 * enhancement: it is now possible to trace most individual methods
2223 of a generic function in addition to tracing the generic function
2225 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2227 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2228 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2229 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2230 produces an error. (thanks to Vincent Arkesteijn)
2231 * bug fix: NAMESTRING on pathnames with :WILD components in their
2232 directories works correctly. (thanks to Artem V. Andreev)
2233 * fixed bug 125: compiler preserves identity of closures. (reported
2235 * bug fixed: functions with &REST arguments sometimes failed with
2236 "Undefined function" when compiled with (DEBUG 3). (reported by
2238 * bug fix: overflow during compiling of setting element of a bit
2239 vector with constant index and value. (reported by Timmy Douglas)
2240 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2241 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2242 * on x86 compiler partially supports stack allocation of dynamic-extent
2244 * GO and RETURN-FROM do not check the extent of their exit points
2245 when compiled with SAFETY 0.
2246 * fixed some bugs related to Unicode integration:
2247 ** encoding and decoding errors are now much more robustly
2248 handled; it should now be possible to recover even from invalid
2249 input or output to the terminal. (thanks to Teemu Kalvas)
2250 ** provided a first cut at implementing STRING-TO-OCTETS and
2251 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2252 ** altered the SB-MD5 contributed module slightly, changing the
2253 interface just enough for it to be supportable for builds where
2254 lisp characters are not eight bits.
2255 * fixed some bugs revealed by Paul Dietz' test suite:
2256 ** the FORMATTER-generated functions for ~V[ conditionals require
2257 the correct number of arguments.
2258 ** READ-FROM-STRING returns the mandated second value when applied
2259 to displaced strings.
2260 ** the #\Rubout and #\Backspace characters are treated as invalid
2261 constituent characters by the tokenizer.
2263 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2264 * new feature: reloading changed shared object files with
2265 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2266 * new feature: references to foreign variables and functions
2267 can now be compiled and loaded before the corresponding shared
2268 object file is loaded, as long as the foreign definitions are
2269 available at runtime.
2270 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2271 supported. (thanks to Dan Debertin)
2272 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2273 just keywords. (thanks to Vincent Arkesteijn)
2274 * fixed bug #331: structure-class instances corresponding to
2275 DEFSTRUCT forms are now created eagerly.
2276 * fixed bug #345: backtraces from calls to undefined functions work
2277 on x86 as well. Related bug #61 is now also partially fixed on x86
2278 (backtraces from throws to unknown catch tags.)
2279 * bug fix: lambda-list parsing is now stricter vrt. order and number
2280 of lambda-list keywords.
2281 * bug fix: as specified by AMOP, an error is signalled if a
2282 class-option appears multiple times in a DEFCLASS form. (reported
2284 * bug fix: RANDOM can be compiled when the compiler derives the type
2285 of its numeric argument as a disjoint set of small integers.
2286 (reported by Paul Dietz)
2287 * bug fix: starting a core saved with shared objects loaded when
2288 those objects are not available no longer causes threaded SBCL to
2289 hang. (reported by Sean Ross)
2290 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2292 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2293 argument, which must always be NIL. (reported by Kalle Niemitalo)
2294 * bug fix: printing 1.0d+23 no longer results in an error.
2295 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2296 * bug fix: structure slot setters preserve evaluation order. (thanks
2298 * fixed some bugs related to Unicode integration:
2299 ** RUN-PROGRAM can allow its child to take input from a Lisp
2300 stream. (reported by Stefan Scholl)
2301 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2302 locales. (reported by Ken Causey)
2303 * fixed some bugs revealed by Paul Dietz' test suite:
2304 ** INCF, DECF and REMF evaluate their place form as specified in
2306 ** FORMATTER expands ~{ ~} iteration directives with V or #
2307 parameters correctly.
2308 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2309 consequent uses no arguments correctly.
2310 ** the system has a partial understanding of the (COMPLEX RATIO)
2312 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2315 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2316 * new feature: a build-time option (controlled by the :SB-UNICODE
2317 keyword feature, enabled by default) for building the system with
2318 support for the entire 21-bit character space defined by the
2320 * new feature: the system now has rudimentary external-format
2321 support; the primary user-visible change at this time is that
2322 characters with the high bit set (such as lower-case-e-acute) will
2323 print correctly to a terminal in a UTF-8 environment.
2324 * minor incompatible change: BASE-CHAR no longer names a class;
2325 however, CHARACTER continues to do so, as required by ANSI.
2326 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2327 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2328 has been moved to the SB-EXT package (temporarily re-exported from
2330 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2331 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2333 * fixed bug #351: better error-handlind and reporting for malformed
2335 * fixed bug #350: bignum-printing is now more memory-efficient,
2336 allowing printing of very large bignums, eg. (expt 2 10000000).
2337 (reported by Bruno Haible)
2338 * fixed bug #302: better primitive-type selection for intersection
2340 * fixed bug #308: non-graphic characters now all have names, as
2341 required. (reported by Bruno Haible)
2342 * bug fix: redefining a class with different superclasses now correctly
2343 removes it from the direct-subclasses of its previous superclasses.
2344 (reported by David Morse)
2345 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2346 new value now works. (reported by Bruno Haible)
2347 * bug fix: correct canonicalization of multiple non-standard slot
2348 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2349 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2350 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2351 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2352 now exists, an signals an error.
2353 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2354 during macroexpansion for non-iteration variables as well. (reported
2355 by Bruno Haible for CMUCL)
2356 * bug fix: Cyclic structures and unprintable objects in compiler
2357 messages no longer cause errors. (reported by Bruno Haible)
2358 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2359 and READ-FROM-STRING all now return a primary value of NIL if
2360 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2361 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2362 (reported by Bruno Haible for CMUCL)
2363 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2364 do not designate a condition. (reported by Bruno Haible for
2366 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2367 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2368 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2369 permitting resolution in favour of any of the conflicting symbols.
2370 (reported by Bruno Haible for CMUCL)
2371 * bug fix: EQUAL compiler optimizations is less aggressive on
2372 strings which can potentially compare true despite having distinct
2373 specialized array element types.
2374 * bug fix: unit enumerations can be defined without dividing by
2375 zero. (thanks to Vincent Arkesteijn)
2376 * FORMAT compile-time argument count checking has been enhanced.
2377 (report from Bruno Haible for CMUCL)
2378 * a partial workaround for the bug 262: the compiler does not try to
2379 inline-expand a local function doing RETURN-FROM from a deleted
2380 BLOCK. (thanks to Peter Denno for the bug report and to David
2381 Wragg for the simple test case)
2382 * fixed some bugs revealed by Paul Dietz' test suite:
2383 ** RENAME-PACKAGE allows all package designators as new package
2385 ** constraint propagation and lambda variable substitution are
2386 more cautious in dealing with partially deleted code.
2387 ** compiler sometimes lost reoptimization passes.
2388 ** CERROR, given a condition as condition designator, passes its
2389 remaining arguments to the continue format control without
2391 ** Case-altering FORMAT directives work correctly on non-ASCII
2393 ** The REAL type specifier handles bounds outside the floating
2394 point ranges without signalling FLOATING-POINT-OVERFLOW.
2395 ** Functions with IR1-transformations can create intercomponent
2396 references to global functions.
2397 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2399 ** FORMAT ~R treats a nil value for its first parameter correctly.
2401 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2402 * enhancement: saving cores with foreign code loaded is now
2403 supported on x86/NetBSD and sparc/Linux in addition to the previously
2404 supported platforms.
2405 * bug fix: on some platforms repeated installations caused multiple
2406 copies of HTML documentation to be installed -- should not happen
2407 any more. (reported by Stefan Scholl)
2408 * bug fix: parsing self-recursive alien record types multiple times
2409 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2410 original patch by Helmut Eller for CMUCL)
2411 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2412 (thanks to Richard Kreuter)
2413 * bug fix: defining classes whose accessors are methods on existing
2414 generic functions in other (locked) packages no longer signals
2415 bogus package lock violations. (reported by François-René Rideau)
2416 * bug fix: special variables as DEFMETHOD parameters no longer have
2417 associated bogus type declarations. (reported by David Wragg and
2419 * bug fix: read-write consistency on streams of element-type
2420 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2421 * bug fix: redefiniton of the only method of a generic function with
2422 no DEFGENERIC no longer emits a full WARNING. In addition,
2423 redefinition of generic functions with no DEFGENERIC to an
2424 incompatible lambda list now signals an error. (thanks to Zach
2426 * bug fix: DEFGENERIC now works even when there's a function of the
2427 same name in an enclosing lexical environment. (thanks to Zach
2429 * fixed compiler failure, caused by instrumenting code during
2430 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2431 * optimization: added loop analysis and improved register allocation
2432 * fixed some bugs revealed by Paul Dietz' test suite:
2433 ** POSITION on displaced vectors with non-zero displacement
2434 returns the right answer.
2435 ** (SIMPLE-STRING) is a valid type specifier for sequence
2437 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2439 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2440 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2442 ** The justification version of the FORMAT ~< directive treats
2443 non-zero minpad parameter correctly.
2445 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2446 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2447 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2448 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2449 the supported interface.
2450 * new feature: Single-stepping of code compiled with DEBUG 2 or
2451 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2452 * new feature: saving cores with foreign code loaded is now
2453 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2454 Timothy Moore's work for CMUCL)
2455 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2456 parameters to * instead of NIL if no initform is supplied.
2457 (reported by Johan Bockgaard)
2458 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2459 correctly when FUNCALL appears as the car of the form. Note:
2460 despite this FUNCALL forms are not currently subject to
2461 compiler-macro expansion. (port of Raymond Toy's fix for the
2462 same from CMUCL, reported by Johan Bockgaard)
2463 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2464 (thanks for Teemu Kalvas)
2465 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2466 case instead of terminating the iteration (thanks for Julian
2467 Squires, Sean Champ and Raymond Toy)
2468 * bug fix: incorrect expansion of defgeneric that caused a style
2469 warning. (thanks for Zach Beane)
2470 * bug fix: slot accessor effective method computation works properly
2471 for classes with multiple non-standard applicable methods on
2472 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2473 * on x86 compiler supports stack allocation of results of LIST and
2474 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2475 CMUCL implementation by Gerd Moellmann)
2476 * fixed some bugs revealed by Paul Dietz' test suite:
2477 ** FORMAT strings with both the ~<~:;~> form of the justification
2478 directive and pretty-printing directives cause an error.
2480 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2481 * incompatible change: the internal functions
2482 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2483 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2484 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2485 instead of the old functions.
2486 * new feature: on platforms where "dladdr" is available foreign
2487 function names now appear in backtraces. (based on Helmut Eller's
2489 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2490 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2492 * documentation: ASDF manual is now distributed with SBCL.
2493 * bug fix: SBCL can now load its contributed modules with REQUIRE
2494 even if the system-provided entries have been removed from
2495 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2497 * bug fix: backtraces involving undefined functions or assembly
2498 routines are more informative. (thanks to Brian Downing)
2499 * bug fix: mutually referent alien structures now work correctly.
2500 (reported by Rick Taube)
2501 * bug fix: structures defined by WITH-ALIEN can be referred to
2502 within other definitions in the same WITH-ALIEN.
2503 * bug fix: division operators (MOD, TRUNCATE and the like) with
2504 constant zero divisors and integer dividends no longer generate
2506 * bug fix: provide default methods for INPUT-STREAM-P and
2507 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2508 * bug fix: improve the detection and resolution of MOP metacycles
2509 (where effective method computation depends on the generic function
2510 having its effective method computed). (reported by Bruno Haible)
2511 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2512 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2513 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2514 * bug fix: pathnames with relative directory components can be
2515 represented relative to default pathnames.
2516 * optimization: in taking the GCD of bignums, reduce the two bignums
2517 to approximately the same size (using Euclid's algorithm) before
2518 applying the more sophisticated binary GCD. (thanks to Juho
2520 * optimization: COUNT on bitvectors now operates word-at-a-time.
2521 * optimization: ASH with a positive, but not necessarily constant,
2522 (leftwards) shift, when in a modular context, is compiled to a
2524 * fixed some bugs revealed by Paul Dietz' test suite:
2525 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2526 if the corresponding argument is NIL.
2527 ** FORMAT directives accepting a minpad parameter treat negative
2529 ** literal commas as character parameters to FORMAT directives are
2531 ** literal spaces directly after ~<Newline> directives within a
2532 format-logical-block (~:< ~@:>) do not induce :FILL-style
2533 conditional newlines.
2534 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2535 as specified: it no longer includes conditional newlines).
2536 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2538 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2539 :PER-LINE-PREFIX argument does not evaluate to a string.
2541 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2542 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2543 the manual for details; for now, package locks can be disabled by
2544 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2545 if no major problems are found then it is likely that they will be
2546 compiled in unconditionally.
2547 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2548 unsupported operators on all platforms. To load a shared library
2549 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2550 object file, link it into a shared library outside of SBCL and
2551 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2553 * bug workaround: ROOM T and the GC were not working together
2554 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2555 reporting facility aren't preserved. That reporting has been
2556 disabled, so now until and unless someone figures out how to make it
2557 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2558 * minor incompatible change: as threatened around sbcl-0.8.0, the
2559 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2560 The symbols are also exported from SB-PCL for backwards
2561 compatibility, but more so than before SB-PCL should be treated as
2562 an implementation-internal package.
2563 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2565 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2566 It is known as of this release not to work on the Alpha, however.
2567 * fixed bug #167: errors signalled due to illegal syntax in method
2568 bodies are now more legible.
2569 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2570 designators and can hence be used with TYPEP.
2571 * fixed bug #333: CHECK-TYPE now ensures that the type error
2572 signalled, if any, has the right object to be accessed by
2573 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2574 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2575 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2577 * fixed bug #334: programmatic addition of slots using specialized
2578 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2579 and :ALLOCATION :CLASS slots.
2580 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2581 float exponents. (rereported by Peter Seibel)
2582 * fixed a bug: #\Space (and other whitespace characters) are no
2583 longer considered to be macro characters in standard syntax by
2584 GET-MACRO-CHARACTER.
2585 * fixed bug: initialization of condition class metaobjects no longer
2586 causes an instance of the condition to be created. (reported by
2588 * fixed bug: it is now possible to have slots such that
2589 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2590 description is neither :INSTANCE nor :CLASS.
2591 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2592 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2593 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2594 non-standard SLOT-DEFINITION-ALLOCATION values.
2595 * fixed bugs: various race conditions handling exiting threads.
2596 CL-PPCRE's thread torture test now passes.
2597 * fixed arguably-a-bug: GC time proportional to number of threads in
2598 system even when most of them are idle
2599 * optimization: improved performance of BIT and SBIT on bit-vectors.
2600 * .fasl file incompatibility: The fasl file version number has
2601 been incremented because of changes associated with package locks.
2603 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2604 * minor incompatible change: the system no longer provides
2605 optimization hints (conditions which are TYPEP
2606 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2607 mode; these hints are still emitted when higher SPEED optimization
2609 * new contrib module: a sampling profiler (profiling by statistical
2610 sampling, rather than by instrumenting functions) is available as
2611 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2612 * the behaviour of the standard function ED is now customizeable by
2613 third parties through a hook variable: see ED's documentation
2614 string for information on the protocol.
2615 * the compiler no longer emits efficiency notes for (FUNCALL X)
2616 when the type of X is uncertain under default optimization
2618 * fixed bug 276: mutating a binding of a specialized parameter to a
2619 method to something that is not TYPEP the specializer is now
2621 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2622 exhibit the required behaviour on the x86 platform. (thanks to
2623 Peter van Eynde, Eric Marsden and Bruno Haible)
2624 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2625 even for difficult arguments. (reported by Peter Graves)
2626 * fixed bug 141a: the backquote printer now descends quoted
2628 * fixed another bug in backquote printing: no more destructive
2629 modification of the form's list structure. (reported by Brian
2631 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2632 move between its address being taken and the call to
2633 interrupt_thread, fixing a crashing race condition.
2634 * the SB-POSIX contrib implementation has been adjusted so that it
2635 no longer exhibits ridiculously poor performance when constructing
2636 instances corresponding to C structs.
2638 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2639 * minor incompatible change: the sb-grovel contrib now treats C
2640 structures as alien (in the sense of SB-ALIEN) objects rather than
2641 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2642 has implications for memory management of client code
2643 (sb-grovel-returned objects must now be manually managed) and for
2644 type safety (alien objects now have full types).
2645 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2646 used to control emission of compiler diagnostics, rather than the
2647 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2648 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2649 quality should be considered deprecated.
2650 * install.sh now installs the user manual as well
2651 * (not quite a new documentable feature, but worth considering in
2652 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2653 beginnings of a semantically meaningful condition hierarchy is
2654 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2656 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2657 designator as the defaults argument.
2658 * fixed bug: Displaced arrays whose displaced-to array has become
2659 too small now cause ARRAY-DIMENSION to signal an error, providing
2660 for safer bounds-checking. (reported by Bruno Haible)
2661 * fixed bug: DEFCLASS slot definitions with identical :READER and
2662 :WRITER names now signal a reasonable error. (reported by Thomas
2664 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2666 * fixed bug: Invalid slot specification errors now print correctly.
2667 (thanks to Zach Beane)
2668 * fixed bug 320: Shared to local slot value transfers in class
2669 redefinitions now happen corrently from superclasses as
2670 well. (reported by Bruno Haible)
2671 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2673 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2674 improper lists correctly. (reported by Bruno Haible)
2675 * fixed bug 313: source-transform for <fun-name> was erroneously
2676 applied to a call of a value of a variable with name <fun-name>.
2677 (reported by Antonio Menezes Leitao)
2678 * fixed bug 307: The obsolete instance protocol ensures that
2679 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2680 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2681 remove dead unknown-values globs from the middle of the stack.
2682 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2683 easier to resume long computations after using *BREAK-ON-SIGNALS*
2684 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2685 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2686 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2687 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2688 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2689 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2691 * fixed a (fairly theoretical) bug in string printing: if
2692 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2693 does not have array-element-type equal to the most general string
2695 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2696 function name. (thanks to Nikodemus Siivola)
2697 * fixed bug: compile-time format string checker failed on
2698 non-closed ~{. (reported by Thomas F Burdick)
2699 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2700 don't warn on legal loop code involving more than one aggregate
2701 boolean. (thanks to Nikodemus Siivola)
2702 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2703 in keyword position to MAKE-PACKAGE was not being reported as
2705 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2706 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2708 * fixed bugs 280 and 312: the checking for multiple definitions in a
2709 file is less likely to become confused by uses of inline
2711 * fixed bug: the #S reader macro performs the keyword coercion
2712 specified for slot names. (reported by Kalle Niemitalo)
2713 * fixed bug: lambda lists may contain symbols whose names start with
2714 & but are not lambda-list-keywords; their occurrence triggers a
2716 * fixed bug 321: define-method-combination argument lambda lists do
2717 not cause invalid code to be generated when &optional or &aux
2718 variables have default values. (reported by Bruno Haible)
2719 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2720 have CLOS classes; this appears also to have fixed reported
2721 instability in stack exhaustion detection.
2722 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2723 MUFFLE-WARNING when no associated restart is present is now
2725 * optimization: rearranged the expansion of various defining macros
2726 so that each expands into only one top-level form in a
2727 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2729 * optimization: used a previously little-used slot in symbols to
2730 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2732 * fixed some bugs revealed by Paul Dietz' test suite:
2733 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2735 ** Fixed an optimization bug related to inheritance of initforms
2736 from local to shared slots.
2737 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2738 ** CAST optimizer forgot to flush argument derived type.
2739 ** print/read consistency on floats is now orders of magnitude
2740 more likely. (thanks also to Bruno Haible for a similar report
2742 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2743 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2744 for objects of type REAL. Make it so.
2745 ** SXHASH is specified (infelicitously) to respect similarity,
2746 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2747 it so. (thanks to Markus Ziegler)
2748 ** on the Alpha, the compiler succeeds in compiling functions
2749 returning a known number of arguments greater than 63.
2750 ** fixed handling of invalid NIL arguments in keyword position
2752 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2754 ** provided a readably-printable representation for RANDOM-STATE
2756 ** ensured that pathnames, where they have a namestring, always
2757 print using #P"..." syntax.
2759 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2760 * Support for the forthcoming 2.0 version of the NetBSD kernel
2761 running on x86 hardware has been added. (thanks to Perry
2762 E. Metzger most immediately, and others for their past work)
2763 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
2764 current release version; SBCL's OpenBSD support had been broken
2765 since about the time of OpenBSD's switch to ELF binary format.)
2766 * [placeholder for DX summary]
2767 ** user code with &REST lists declared dynamic-extent, under high
2768 speed or space and low safety and debug optimization policy.
2769 * The manual has been converted to Texinfo format and the debugger
2770 chapter from the cmucl manual has been added.
2771 * A facility has been added to extract documentation strings from
2772 sbcl and store them as Texinfo-formatted snippets for inclusion in
2773 the manual (via Texinfo's @include directive)
2774 * bug fix: compiler emitted division in optimized DEREF. (thanks for
2775 the test case to Dave Roberts)
2776 * bug fix: multidimensional simple arrays loaded from FASLs had fill
2777 pointers. (reported by Sean Ross)
2778 * bug fix: PROFILE output is printed nicely even for large numerical
2779 values. (thanks to Zach Beane)
2780 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
2781 greater than 32 handle EOF correctly.
2782 * bug fix: on X86 an immediate argument of the IMUL instruction is
2783 correctly printed in disassembly. (thanks to Lutz Euler)
2784 * bug fix: class slots in redefined classes preserve their old
2785 values. (thanks to Bruno Haible and Nikodemus Siivola)
2786 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
2787 succeeds. (reported by Marco Baringer)
2788 * fixed some bugs revealed by Paul Dietz' test suite:
2789 ** READ-SEQUENCE now works on ECHO-STREAMs.
2790 ** RATIONALIZE works more according to its specification. (thanks
2793 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
2794 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
2795 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
2796 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
2797 should matter to you only if you rebind the printer control
2798 variables and then find you want different bindings in the
2799 debugger than in the ordinary execution of your program.)
2800 * The runtime build system has been tweaked to support building
2801 (on SPARC/SunOS) using a C compiler which invokes Sun's own
2802 assembler and linker. (thanks to Nikodemus Siivola)
2803 * Unbound, undefined, undeclared variables now trigger full
2804 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
2805 more often programmer error than deliberate exploitation of undefined
2807 * optimization: the hash algorithm for strings has changed to one
2808 that is less vulnerable to spurious collisions. (thanks to Juho
2810 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
2811 needless bounds checking. (thanks to Juho Snellman)
2812 * optimization: implemented multiplication as a modular
2813 (UNSIGNED-BYTE 32) operation on the PPC backend.
2814 * fixed some bugs revealed by Paul Dietz' test suite:
2815 ** ADJUST-ARRAY now copies the datum in a zero rank array if
2817 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
2818 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
2819 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
2821 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
2823 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
2825 ** ECHO-STREAMs no longer attempt to echo the end of file value to
2826 their output stream on EOF from read.
2827 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
2828 have been read to end-of-file.
2829 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
2831 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
2832 description of determination of which consecutive characters
2834 ** Printing the "Space" character with escaping on now yields "#\\ ",
2835 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
2836 ** Reading floating-point numbers with *READ-BASE* set to a number
2837 less than 10 works correctly.
2838 ** Reading floating-point numbers with *READ-BASE* set to a number
2839 more than 10 works correctly.
2840 ** Printing with *PRINT-READABLY* targets the standard readtable, not
2841 the readtable currently in effect.
2843 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
2844 * minor incompatible change: parsing of namestrings on a physical
2845 (Unix) host has changed; numbers after the final #\. in a
2846 namestring are no longer interpreted as a version field. This is
2847 intented to be largely invisible to the user, except that the
2848 meaning of the namestring "*.*.*" has changed: it now refers to a
2849 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
2850 should usually be replaced by
2851 (make-pathname :name :wild :type :wild :version :wild)
2852 with the added benefit that this is more likely to be portable.
2853 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
2854 option to OPEN now signals an error if the file being opened
2855 exists; this may have an impact on existing code.
2856 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
2857 signals received, on the PowerPC platforms (both Linux and
2858 Darwin). (thanks to Pierre Mai for pointing out the location of
2860 * several fixes on OS X: The system now builds and runs cleanly on
2861 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
2862 (thanks to Brian Mastenbrook)
2863 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
2864 second-resolution: integer multiples of 1/3600 between -24 and 24.
2865 (thanks to Vincent Arkesteijn)
2866 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
2867 type when called with 1 argument; PEEK-CHAR checked type of
2868 PEEK-TYPE only after having read first character from a
2869 stream. (reported by Peter Graves)
2870 * bug fix: the garbage collector now has much better locality
2871 behaviour, and in particular no longer treats all memory as being
2872 exhausted when many small objects point to each other in a deeply
2874 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2875 recognized as being TYPEP their class.
2876 * bug fix: the PUSHNEW documentation string has been corrected.
2877 (thanks to Vincent Arkesteijn)
2878 * bug fix: defaulting of the value for the last of an atypically
2879 large number of multiple values being bound was not being
2880 performed correctly on the Alpha or PPC platforms
2881 * optimization: implemented multiplication as a modular
2882 (UNSIGNED-BYTE 32) operation on the x86 backend.
2883 * optimization: SEARCH on simple-base-strings can now be open-coded.
2884 (see also contrib/compiler-extras.lisp for inspiration for
2885 teaching the compiler about the Boyer-Moore algorithm).
2886 * value, returned by MAX (and MIN) called with several EQUALP, but
2887 not EQL, arguments now does not depend on compiler settings.
2888 * fixed some bugs revealed by Paul Dietz' test suite:
2889 ** in stack analysis liveness information is propagated from
2890 non-local entry points.
2891 ** pathwise CAST removing failed when the CAST node did not start
2893 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2894 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2896 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2897 host is already defined.
2898 ** RENAME-FILE works on streams instead of signalling an internal
2900 ** PEEK-CHAR uses the current readtable when determining whether
2901 or not a character is whitespace.
2902 ** MERGE-PATHNAMES handles the case when the pathname does not
2903 specify a name while the default-pathname specifies a version.
2904 ** Pathnames now stand a better chance of respecting print/read
2906 ** Attempting to use standardized file system operators with a
2907 pathname with invalid :DIRECTORY components signals a
2909 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2911 ** DIRECTORY on logical pathnames is more correct.
2912 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2913 signal a TYPE-ERROR if their argument is not a stream.
2914 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2915 designator argument does not designate a stream.
2916 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2917 examining the synonym.
2918 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2920 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2921 element-type larger than ([UN]SIGNED-BYTE 32).
2923 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2924 * When built with the :SB-FUTEX feature, threaded builds now take
2925 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2926 for faster/more reliable mutex and condition variable support.
2927 * Incompatible change (but one you probably shouldn't have been using
2928 anyway): the interface and code for arbitrating between multiple
2929 threads in the same user session has been redesigned.
2930 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2931 error when called without an explicit environment argument.
2932 (thanks to Nikodemus Siivola)
2933 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2934 confused about their position. (thanks to Adam Warner and Gerd
2936 * bug fix: Pretty printing backquoted forms with unquotations in the
2937 argument list position of various code constructs such as LAMBDA
2938 now works correctly. (reported by Paul Dietz)
2939 * bug fix: Pretty printing unquotations no longer loses all
2940 stream position information.
2941 * optimization: performance of string output streams is now less
2942 poor for multiple small sequence writes.
2943 * optimization: performance of CSUBTYPEP in the presence of complex
2944 expressions involving CONS and NOT many times has been improved.
2945 (reported by Paul Dietz)
2946 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2948 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2949 streams for the REPL, for the debugger, and so on. (thanks to
2951 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2952 * fixed some bugs revealed by Paul Dietz' test suite:
2953 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2954 is ignored if it is too small, rather than propagating through
2955 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2956 ** extremely complex negations of CONS types were not being
2957 sufficiently canonicalized, leading to inconsistencies in
2959 ** VALUES tranformer lost derived type.
2961 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2962 * fixed a bootstrapping bug: the build process no longer assumes
2963 that the various BOOLE-related constants have the same value in
2964 host and target lisps. (noted by Paul Dietz' test suite on an
2965 SBCL binary built from CLISP)
2966 * The system can now be dynamically linked on the MIPS platform,
2967 which enables dynamic loading of foreign code from Lisp. (thanks
2968 to Ralf Baechle for discussions on the MIPS ABI)
2969 * The system now records debugging information for its own source
2970 files in a filesystem-position-independent manner, relative to
2971 the "SYS" logical host.
2972 * fixed a compiler bug: MV-LET convertion did not check references
2973 to the "max args" entry point. (reported by Brian Downing)
2974 * tweaked disassembly notes to be less confident about proclaiming
2975 some instruction as an LRA. (thanks to Brian Downing)
2976 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2977 now each have their own history, command character, and other
2978 characteristics. (thanks to David Lichteblau)
2979 * fixed some bugs revealed by Paul Dietz' test suite:
2980 ** compiler failure in compiling LOGAND expressions including a
2982 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2983 shift greater than 32.
2984 ** FLUSH-DEST did not mark blocks for type check regeneration.
2985 ** HANDLER-CASE failed to accept declarations in handler clauses
2986 in some circumstances.
2988 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2989 * New code in contrib/sb-introspect (still probably not entirely
2990 stable yet) provides some support for smart Lisp development
2991 environments like SLIME.
2992 * The conditions signalled for errors occurring when loading .fasl
2993 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2994 in a way which should help ASDF recover gracefully.
2995 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2996 stuff has been cleaned up. If you code contrib/ stuff, this might
2997 affect you, and you can look at contrib/README, contrib/STANDARDS,
2998 and/or the 0.8.4.27 diff to check.
2999 * In full calls the compiler now does not generate checks for declared
3000 argument types for all arguments.
3001 * various threading fixes
3002 ** and some experimental patches which didn't make it into
3003 the main tree for this release, but which are shipped in
3004 contrib/experimental-thread.patch as a possible fix for some
3005 failures (deadlock, spinning...) in GC-intensive multithreaded
3007 * fixed PPC build problem (source code incompatibility of different
3008 library versions): added offsetof() hackery which attempts to divine
3009 where glibc maintainers put uc_mcontext today
3010 * fixed bug 282: compiler does not trust type assertions while passing
3011 arguments to a full call.
3012 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3013 &OPTIONAL VALUES type parameter.
3014 * fix bug 214: algorithm for noting rejected templates is now more
3015 similar to that of template seletion. (also reported by rydis on
3017 * fixed bug 141b: printing backquoted information readably and prettily
3018 inserts a space where necessary.
3019 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3020 (CHARACTER 10) are now reported as errors, rather than propagated
3021 as unknown types. (reported by piso on #lisp)
3022 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3023 with values NIL and :ERROR. (thanks to Milan Zamazal)
3024 * fixed bug 191c: CLOS now does proper keyword argument checking as
3025 described in CLHS 7.6.5 and 7.6.5.1.
3026 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3027 longer raise an error; further, using a list as a for-as-arithmetic
3028 counter now raises a meaningful error.
3029 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3030 now understood by sequence creation functions such as MAKE-SEQUENCE
3032 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3033 a STRING-INPUT-STREAM.
3034 * compiler enhancement: SIGNUM is now better able to derive the type
3036 * type declarations inside WITH-SLOTS are checked. (reported by
3038 * fixed some bugs revealed by Paul Dietz' test suite:
3039 ** incorrect optimization of TRUNCATE for a positive first
3040 argument and negative second.
3041 ** compiler failure in let-convertion during flushing dead code.
3042 ** compiler failure while deriving type of TRUNCATE on an
3043 interval, containing 0.
3044 ** ASH of a negative bignum by a negative bignum count now returns
3046 ** intersection of CONS types now canonicalizes properly, fixing
3047 inconsistencies in SUBTYPEP.
3049 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3050 * incompatible change: The --disable-debugger command line
3051 option now clobbers the debugger at a more fundamental
3052 level, by redefining #'INVOKE-DEBUGGER instead of by
3053 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3054 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3055 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3056 enter the debugger REPL and then suffer recursive errors
3057 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3058 while under the new system, BREAK in --disable-debugger mode
3059 terminates the system just as an unhandled error would.
3060 * fixed compiler performance when processing loops with a step >1;
3061 * bug fix: DOCUMENTATION now retrieves generic function
3062 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3063 support has been systematized, and now supports the methods
3064 specified by ANSI, along with a default method and a method for
3065 slot documentation. (reported by Nathan Froyd)
3066 * bug fix: effective methods associated with a generic function are
3067 no longer cached over a change of that generic function's method
3068 combination. (reported by Andreas Fuchs)
3069 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3070 names a non-existent directory. (thanks to Andreas Fuchs)
3071 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3072 the PPC platform, lead to stack corruption; this has been fixed.
3073 (reported by Rainer Joswig)
3074 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3075 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3076 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3077 arithmetic in general, is now much more reliable on the PPC
3079 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3080 platform now returns the right answer.
3081 * optimization: restored some effective method precomputation in
3082 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3083 precomputation is now tunable.
3084 * optimization: compiler-internal data structure use has been
3085 reviewed, and changes have been made that should improve the
3086 performance of the compiler by about 20%.
3087 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3088 simple-base-strings and simple-bit-vectors is improved.
3089 * optimization: the optimization of 32-bit logical and arithmetic
3090 functions introduced in version 0.8.3 on the x86 has been
3091 implemented on the mips, ppc and sparc platforms; an
3092 implementation of the same facility, but for 64-bit arithmetic,
3093 has been added for the alpha.
3094 * microoptimization: the compiler is better able to make use of the
3095 x86 LEA instruction for multiplication by constants.
3096 * bug fix: in some situations compiler did not report usage of
3097 generic arithmetic in (SPEED 3) policy.
3098 * bug 145b fix: compiler used wrong type specifier while converting
3099 MEMBER-types to numeric.
3100 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3102 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3103 index argument now works properly on the Alpha platform.
3104 * bug fix: floating point exception treatment on the Alpha platform
3106 * bug fix: FILE-POSITION works much better on string input and
3107 output streams. (thanks to Nikodemus Siivola)
3108 * bug fix: many threading/garbage collection symptoms sorted.
3109 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3110 might be pseudo-atomic.
3111 * internal change: Stopping for GC is now done with signals not
3112 ptrace. GC is now done in whichever thread wanted it, instead of
3114 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3116 * bug fix: result form in DO is not contained in the implicit
3118 * incompatible change: ICR structure is changed; the value part of
3119 CONTINUATION is now called LVAR; corresponding functions are
3120 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3121 * added type deriver for ISQRT (thanks to Robert E. Brown).
3122 * bug fix: better support for loading from the command line when an
3123 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3125 * fixed some bugs revealed by Paul Dietz' test suite:
3126 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3127 ** ROUND and FROUND now give the right answer when given very
3128 small float arguments.
3129 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3131 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3132 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3133 ** LCM should return a non-negative integer.
3134 ** PARSE-INTEGER returned the index of a terminator instead of the
3135 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3136 ** PARSE-INTEGER returned an incorrect index being applied to a
3138 ** LCM with two arguments of 0 returns 0 rather than signalling
3140 ** unsigned addition of a 32-bit constant with the high bit set no
3141 longer causes an internal compiler error on the x86.
3142 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3143 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3144 with negative last argument.
3145 ** byte specifiers with zero size and position no longer cause
3146 an error during type derivation.
3147 ** bignum multiplication on the Alpha platform now returns the
3149 * porting: The system now builds on SuSE AMD64, although it still
3150 generates a 32-bit binary.
3151 * .fasl file incompatibility: The fasl file version number has
3152 been incremented (because of the changes to internal compiler
3153 data structures referred to above).
3155 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3156 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3157 more accurately, on the Darwin kernel running on PowerPC hardware.
3158 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3159 * Compiler code deletion notes now signal a condition of type
3160 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3161 an associated MUFFLE-WARNING restart.
3162 * The compiler now performs limited argument count validation of
3163 constant format strings in FORMAT, and where appropriate in ERROR,
3164 CERROR and WARN. (thanks to Gerd Moellmann)
3165 * New ASDF-INSTALL contrib can be used for automatic download and
3166 installation of third-party Lisp code from CCLAN or other sites
3168 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3169 which forces another thread to execute a function supplied by the
3171 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3172 now accept and act upon their :ELEMENT-TYPE keyword argument.
3173 (reported by Martin Atzmueller, Edi Weitz)
3174 * bug fix: FILE-POSITION now accepts position designators up to
3175 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3176 is the greater. (thanks to Patrik Nordebo)
3177 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3178 Kalle Olavi Niemitalo)
3179 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3180 printable. (reported by Eric Marsden)
3181 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3182 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3183 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3184 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3185 (thanks to Stig Sandoe)
3186 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3187 UNREAD-CHAR now correctly includes the unread character in the
3188 target sequence. (thanks to Gerd Moellmann)
3189 * bug fix in threaded builds: the system can now be suspended and
3190 resumed by shell job control with minimal disruption.
3191 * bug fixes in times and timezones >2038AD
3192 * better handling of "where is GNU make?" problem in build scripts
3193 (thanks to Nikodemus Siivola)
3194 * new optimization: inside a named function any reference to a
3195 function with the same name is considered to be a self-reference;
3196 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3197 optimization quality.
3198 * new optimization on x86: logical functions and + now have
3199 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3200 used when the result is truncated to 32 bits.
3201 * VALUES declaration is partially enabled.
3202 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3203 * fixed some bugs revealed by Paul Dietz' test suite:
3204 ** The system now obeys the constraint imposed by
3205 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3206 types form a lattice under type intersection.
3207 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3208 ** ASSOC now ignores NIL elements in an alist.
3209 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3210 and (1+ MOST-POSITIVE-FIXNUM) answers.
3211 ** The addition of a method with invalid qualifiers to a generic
3212 function does not cause an error to be signalled immediately;
3213 a warning is signalled, and the error is generated only on
3214 calling the generic function.
3215 * changed .fasl file version number, in part to add type codes for
3216 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3217 obscure ANSI requirements
3219 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3220 * fixed bug 148: failure to inline-expand a local function left
3221 garbage, confusing the compiler.
3222 * fixed bugs 3cd: structure slot readers perform type check if the
3223 slot can have an invalid value (i.e. it is either not initialized
3224 or can be written with a less specific slot writer).
3225 * bug fix: the compiler now traps array references to elements off
3226 the end of an array; previously, the bounds checking in some
3227 circumstances could go off-by-one.
3228 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3230 * type declarations for array element types now obey the description
3231 on the CLHS page "Declaration TYPE", as per discussions on
3232 sbcl-help around 2003-05-08. This means that a declaration
3233 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3234 declaration, all references to BAR will be asserted or assumed
3235 (with THE, so dependent on compiler policy) to involve objects of
3236 type FOO. Note that no such declaration is implied in
3237 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3238 * declared types of functions from the "Conditions"
3239 chapter. (reported by Paul Dietz)
3240 * bug fix: CERROR accepts a function as its first argument.
3241 * bug fix: NTH an NTHCDR accept a bignum as index
3242 arguments. (reported by Adam Warner)
3243 * optimization: character compare routines now optimize comparing
3244 against a constant character. (reported by Gilbert Baumann)
3245 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3246 argument now works properly on the MIPS platform.
3247 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3248 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3249 declared to have a functional type, does not cause an error
3251 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3252 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3253 * fixed bug: if last continuation of a deleted block has a
3254 destination, this destination should be deleted too. (reported by
3256 * fixed a bug in the bootstrap process: the host compiler's values
3257 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3258 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3259 test case from Patrik Nordebo)
3260 * improved the ability of the disassembler on the PPC platform to
3261 provide helpful disassembly notes.
3262 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3263 the class in more cases than previously.
3264 * bug fix: FILE-POSITION now understands :START and :END for
3265 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3266 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3267 8) data. (thanks to David Lichteblau)
3268 * bug fix: it is possible to add a method to a generic function
3269 without lambda list.
3270 * bug fix: reader failed to signal END-OF-FILE inside an
3271 object representation. (reported by Nikodemus Siivola)
3272 * fixed some bugs revealed by Paul Dietz' test suite:
3273 ** LAST and [N]BUTLAST should accept a bignum.
3274 ** condition slot accessors are methods.
3275 ** (VECTOR NIL) is a subtype of STRING.
3277 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3278 * minor incompatible change: some nonsensical specialized lambda
3279 lists (used in DEFMETHOD) which were previously ignored now signal
3281 * minor incompatible change: the system is now aware of the types of
3282 variables in the COMMON-LISP package, and will signal errors for
3283 most violations of these type constraints (where previously they
3284 were silently accepted).
3285 * minor incompatible change: COMPILE-FILE now uses the freedom
3286 afforded (ANSI 3.2.2.3) to use derived function types for
3287 functions defined in the same file. This also permits the system
3288 to warn on static type mismatches and function
3289 redefinition. (Currently it does not work with high DEBUG level.)
3290 * minor incompatible change: VALUES declaration is disabled.
3291 * When issuing notes, the compiler now signals a condition of type
3292 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3293 restart for use in user handlers. It is expected that the
3294 COMPILER-NOTE condition will eventually become a condition
3295 supertype to a hierarchy of note types, which will then be
3296 handleable in a similar fashion. However, at the moment, no such
3297 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3298 but it's an implementation detail, not a classification for the
3300 * Changes in type checking closed the following bugs:
3301 ** type checking of unused values (192b, 194d, 203);
3302 ** template selection based on unsafe type assertions (192c, 236);
3303 ** type checking in branches (194bc).
3304 * A short form of VALUES type specifier has ANSI meaning (it has
3305 increased the number of situations when SBCL cannot perform type
3307 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3308 keywords or constants is permissible.
3309 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3310 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3311 classes. (thanks to Antonio Martinez)
3312 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3313 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3314 argument to a pretty-print stream. Instead, it leaves any such
3315 operations to DESCRIBE-OBJECT methods.
3316 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3318 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3319 lambda lists. (thanks to David Lichteblau)
3320 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3321 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3322 (thanks to Gerd Moellmann)
3323 * fixed bug 246: increased compilation speed of long
3324 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3326 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3328 * DEFCONSTANT now throws a condition of type
3329 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3330 constant to a non-EQL value; CONTINUE and ABORT restarts
3331 respectively change and preserve the value.
3332 * fixed bug 63: The code walker, part of the implementation of CLOS,
3333 is now better at handling symbol macros.
3334 * bug fix: There is no longer an internal implementation type named
3335 CL:LENGTH. (reported by Raymond Toy)
3336 * bug fix: In macro-like defining macros/special operators the
3337 implicit block does not enclose the lambda list.
3338 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3339 enclosed in parentheses) are not suitable as type specifiers, and
3340 their use properly signals an error now.
3341 * bug fix: An argument count mismatch for a type specifier in code
3342 being compiled no longer causes an unhandled error at compile
3343 time, but signals a compile-time warning.
3344 * fixed simple vector readable printing
3345 * bug fix: DESCRIBE takes more care over whether the class
3346 precedence list slot of a class is bound before accessing it.
3347 (reported by Markus Krummenacker)
3348 * bug fix: FORMATTER can successfully compile pretty-printer format
3349 strings which use variants of the ~* directive inside.
3350 * bug fix: SEARCH now applies its TEST predicate to the elements of
3351 the arguments in the correct order. (thanks to Wolfhard Buss)
3352 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3353 in type inference. (thanks to Robert E. Brown)
3354 * bug fix: Reading in symbols with an explicit package name of ""
3355 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3356 * fixed some bugs revealed by Paul Dietz' test suite:
3357 ** NIL is now allowed as a structure slot name.
3358 ** Arbitrary numbers, not just REALs, are allowed in certain
3359 circumstances in LOOP for-as-arithmetic clauses.
3360 ** Multiple class redefinitions before slot access no longer
3361 causes a type error.
3362 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3363 association between the name and a class.
3364 ** Generic functions with non-standard method-combination and over
3365 five methods all of which return constants no longer return NIL
3366 after the first few invocations. (thanks to Gerd Moellmann)
3367 ** CALL-NEXT-METHOD with no arguments now passes the original
3368 values of the arguments, even in the presence of assignment.
3369 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3371 ** DISASSEMBLE works with closures and funcallable instances.
3372 ** ADD-METHOD now returns the generic function, not the new method.
3373 ** FIND-METHOD signals an error if the lengths of the specializers
3374 is incompatible with the generic function, even if the ERRORP
3376 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3377 which its argument is a member.
3378 ** DEFCLASS only redefines the class named by its class-name
3379 argument if that name is the proper name of the class;
3380 otherwise, it creates a new class.
3381 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3382 of the UNBOUND-SLOT condition to the name of the slot.
3383 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3384 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3385 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3386 SLOT-MAKUNBOUND in the specified fashion.
3388 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3389 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3390 cross-compilation host. As a consequence, we can now bootstrap our
3391 way up to SBCL starting with a bare gcc toolchain and human-readable
3392 source code (first the source to CLISP, then the source to SBCL).
3393 * A contributed module containing a partial implementation of the
3394 simple-streams interface has been included. (thanks to Rudi
3396 * A contributed module implementing the RFC1321 Message Digest
3397 Algorithm, known as MD5, has been included.
3398 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3399 no longer has any effect, as the code controlled by this feature
3400 has been deleted. (As far as we know, no-one has ever built using
3401 this feature, and its semantics were confused in any case).
3402 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3403 work on conditions (as required by the ANSI specification),
3404 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3405 expected behaviour on conditions. Users should note, however,
3406 that such behaviour is not required by the ANSI specification,
3407 and so use of this behaviour may render their code unportable.
3408 * fixed some bugs revealed by Paul Dietz' test suite:
3409 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3411 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3412 ** SXHASH on condition objects no longer returns NIL.
3413 ** :ALLOCATION :CLASS slots are better treated; their values are
3414 updated on class redefinition, and initforms inherited from
3415 superclasses are applied.
3416 ** REMOVE-METHOD returns its generic function argument even when
3417 no method was removed.
3418 ** SHARED-INITIALIZE now initializes the values of the requested
3419 slots, including those with :ALLOCATION :CLASS.
3420 ** ALLOCATE-INSTANCE now works on structure classes defined via
3421 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3423 ** SLOT-EXISTS-P now works on conditions, as well as structures
3425 ** MAKE-LOAD-FORM now has the required methods on
3426 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3427 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3428 keyword, and now implements the SLOT-NAMES argument.
3429 ** methods with &OPTIONAL arguments no longer allow too many
3430 arguments to be passed in the call without error.
3431 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3432 option is consistent with the required arguments of the generic
3433 function lambda list.
3434 * bug fix: REQUIRE accepts a string designator. (Thanks to
3436 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3437 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3438 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3439 * bug fix: The compiler now checks for duplicated variables in macro
3441 * bug fix: SETQ on globals returns the correct value.
3442 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3443 not a COMPILER-ERROR (followed by some other strange error on
3444 choosing the CONTINUE restart).
3445 * bug fix: make.sh and friends are now more consistent in the way that
3446 they look for GNU "make".
3448 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3449 * experimental native threads support (on x86 Linux >=2.4 only).
3450 This is not compiled in by default: you need to add :SB-THREAD to
3451 the target features. See the "Beyond ANSI" chapter of the manual
3453 * fix for longstanding nonANSIism: The old distinction between
3454 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3455 The return value from CL:FIND-CLASS is now a CLOS class, and
3456 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3457 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3458 * An interface to the MetaObject Protocol, as described in Kiczales,
3459 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3460 MIT Press, 1991, is available from the SB-MOP package.
3461 * incompatible change: the SB-PCL package should now be considered
3462 a private implementation detail, and no longer a semi-private MOP
3464 * minor incompatible change: due to rearrangement for threads, the
3465 control stack and binding stack are now allocated at arbitrary
3466 addresses instead of being hardcoded per-port. Users affected by
3467 this probably have to be doing advanced things with shared
3468 libraries, and will know who they are.
3469 * minor incompatible change: Previously, all --eval forms used were
3470 processed with READ before any of them were processed with EVAL.
3471 Now each --eval form is processed with both READ and EVAL before
3472 the next --eval form is processed. (Thus package operations like
3473 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3474 work as the user might reasonably expect.)
3475 * minor incompatible change: *STANDARD-INPUT* is now only an
3476 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3478 * minor incompatible change: Y-OR-N-P is now character-oriented,
3479 not line oriented. Also, YES-OR-NO-P now works without errors.
3480 (thanks to Antonio Martinez)
3481 * sb-aclrepl module improvements: an integrated inspector, added
3482 repl features, and a bug fix to :trace command.
3483 * Known functions, which cannot be open coded by the backend, are
3484 considered to be able to check types of their arguments. (fixing
3485 a bug report by Nathan J. Froyd)
3486 * fixed a bug in computing method discriminating functions: It is
3487 now possible to define methods specialized on classes which have
3488 forward-referenced superclasses. (thanks to Gerd Moellmann)
3489 * fixed evaluation order in optional entries (reported by Gilbert
3491 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3492 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3493 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3494 required-by-AMOP NAME argument, as well as CLASS and
3495 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3496 * fixed bug 20: DEFMETHOD can define methods using names that are
3497 not the proper names of classes to designate class specializers.
3498 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3499 Unix file descriptors, instead of blowing up. (thanks to Antonio
3501 * Garbage collection refactoring: user-visible change is that a
3502 call to the GC function during WITHOUT-GCING will not do garbage
3503 collection until the end of the WITHOUT-GCING. If you were doing
3504 this you were probably losing anyway.
3505 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3506 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3507 TYPEP the latter but not the former.
3508 * The compiler issues a full WARNING for calls to undefined functions
3509 with names from the CL package.
3510 * MAP-INTO for a vector destination is open coded. (reported by
3511 Brian Downing on c.l.l)
3512 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3513 documentation string.
3514 * fixed some bugs revealed by Paul Dietz' test suite:
3515 ** COPY-ALIST now signals an error if its argument is a dotted
3517 ** Condition slots are now accessed more correctly in the presence
3518 of multiple initargs for a given slot.
3519 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3520 exclude restarts of the same name associated with a different
3522 ** DEFCLASS of forward-referenced classes with another
3523 forward-referenced class in the superclasses list no longer
3525 ** Condition slots are now initialized once each, not multiple
3526 times. (thanks to Gerd Moellmann)
3527 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3529 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3530 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3531 arguments contain duplicated elements.
3532 ** RESTART-CASE understands local macros.
3533 ** RESTART-CASE associates exactly its own restarts with a condition.
3534 ** ENDP in safe mode checks its argument to be of type LIST.
3535 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3536 in question is unbound.
3537 ** Optimized MAKE-INSTANCE functions no longer cause internal
3538 assertion failures in the presence of duplicate initargs.
3539 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3540 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3541 propagated even in the ctor optimized implementation of
3543 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3545 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3546 * a better implementation of SXHASH on (simple) bit vectors,
3547 measured both in execution speed and in distribution of results
3548 over the positive fixnums, has been installed. Likewise, a better
3549 implementation of EQUAL for simple bit vectors is now available.
3550 * fixed CEILING optimization for a divisor of form 2^k.
3551 * fixed bug 240 (emitting extra style warnings "using the lexical
3552 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3553 by Antonio Martinez)
3554 * fixed SXHASH, giving different results for NIL depending on type
3555 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3556 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3557 variable. (found by Rolf Wester)
3558 * SBCL does not ignore type declarations for special
3559 variables. (reported by rif on c.l.l 2003-03-05)
3560 * some bug fixes in contrib/sb-aclrepl/
3561 * fixed some bugs revealed by Paul Dietz' test suite:
3562 ** a bug in the CONS type specifier, whereby the CAR and CDR
3563 types got intertwined, has been fixed;
3564 ** the type system is now able to reason about the interaction
3565 between INTEGER and RATIO types more completely;
3566 ** APPEND, [N]REVERSE and NRECONC check that those their
3567 arguments, which must be proper lists, are really so;
3568 ** An array specialized to be unable to hold elements has been
3569 implemented, as required -- yes, really -- by ANSI;
3570 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3571 on malformed property lists;
3573 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3574 * incompatible packaging change: in line with Unix convention,
3575 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3576 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3577 * REQUIRE and PROVIDE are now optionally capable of doing something
3578 useful. See the documentation string for REQUIRE.
3579 * infrastructure for a managed SBCL contrib system: contributed
3580 modules in this release include:
3581 ** the ASDF system definition facility;
3582 ** an interface to the BSD Sockets API;
3583 ** an ACL-like convenience interface to the repl;
3584 (thanks to Kevin Rosenberg)
3585 ** an implementation of ROTATE-BYTE, with efficient implementation
3587 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3588 gives a closer approximation to the right answer than previously.
3589 (thanks to Raymond Toy)
3590 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3591 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3592 optional environment arguments, as required by ANSI.
3593 * fixed bugs in other functions taking environment objects, allowing
3594 calls with an explicit NIL environment argument to be compiled
3596 * fixed bug 228: primary return values from
3597 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3598 COMPILE or FUNCTION.
3599 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3600 :TYPE will no longer signal errors on innocuous objects.
3601 * fixed bug 231b: SETQ is better at respecting type declarations in
3602 the lexical environment.
3603 * fixed a bug in DEFCLASS: classes named by symbols with no or
3604 unprintable packages can now be defined.
3605 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3606 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3607 * fixed compiler failure related to checking types of functions.
3608 (reported by Robert E. Brown)
3609 * the compiler is now much more consistent in its error-checking
3610 treatment of bounding index arguments to sequence functions: in
3611 (SAFETY 3) code, errors will be signalled in almost all cases if
3612 invalid sequence bounding indices are passed to functions defined
3613 by ANSI to operate on sequences.
3614 * fixed a bug in the build procedure: documentation of SBCL-specific
3615 packages is now preserved and available in the final Lisp image.
3616 * lifted FDEFINITION lookup out of loops in the implementation of
3617 many list operations. (thanks to Robert E. Brown)
3618 * fixed a bug in the reader: the #n# reader macro now works for
3619 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3620 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3621 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3622 E. Brown and Tony Martinez respectively)
3623 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3624 SLOT-BOUNDP: in particular, it is now able to optimize them much
3625 better, and is now not vulnerable to having packages renamed.
3626 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3627 always called when a slot is not present in an instance. (thanks
3629 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3630 longer signal an error on unreading a character following EOF on
3631 the previous constituent stream. (thanks to Tony Martinez)
3632 * fixed some bugs revealed by Paul Dietz' test suite:
3633 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3634 not just nonnegative fixnums;
3635 ** the logical bit-array operators such as BIT-AND now accept an
3636 explicit NIL for their "opt-arg" argument (to indicate a
3637 freshly-consed result bit-array);
3638 ** ELT now signals an error on an invalid sequence index in safe
3640 ** the type system is now cleverer about negations of numeric
3641 types, and consequently understands the BIGNUM and RATIO types
3643 ** the type system is now cleverer about the interaction between
3644 INTEGER and RATIO types: while bugs still remain, many more
3645 cases are accurately computed;
3646 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3647 if it is in the last clause;
3648 ** CONSTANTLY now correctly returns a side-effect-free function in
3650 ** DECLARE is no longer treated as a special-operator; in
3651 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3652 * incremented fasl file version number due to the change in the
3653 DEFSTRUCT-SLOT-DESCRIPTION structure.
3655 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3656 * minor incompatible change: code processed by the "interpreter" or
3657 EVAL now has a compilation optimization policy of (DEBUG 2)
3658 (changed from (DEBUG 1)) to improve debuggability of interactive
3659 development, and to allow the use of the debug RETURN command in
3661 * an experimental implementation of the RETURN command for the
3662 debugger has been included. (thanks to Frederik Kuivinen)
3663 * fixed bug 62: constraints were not propagated into a loop.
3664 * fixed bug in embedded calls of SORT (reported and investigated by
3666 * fixed some bugs revealed by Paul Dietz' test suite:
3667 ** printing and reading of arrays with some dimensions having
3668 length 0 (thanks to Gerd Moellmann);
3669 ** BOA constructor with &AUX argument without a default value does
3670 not cause a type error;
3671 ** CONSTANTP now returns true for all self-evaluating objects.
3673 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3674 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3675 accessors that are related by inheritance, as specified in the
3676 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3677 Valtteri Vuorikoski)
3678 * The compiler is now able to inline functions that were defined in
3679 a complex lexical environment (e.g. inside a MACROLET).
3680 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3682 * Support for the upcoming FreeBSD-5.0 release has been included.
3683 (thanks to Dag-Erling Smorgrav)
3684 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3685 effect when it is not in a toplevel context.
3686 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3687 stand a better chance of being correct. (thanks to Gerd
3689 * fixed bug in COERCE, which now signals an error on coercing a
3690 rational to a bounded real type which excludes the expected
3692 * The compiler is now able to derive types more accurately from the
3693 COERCE and COMPILE functions.
3694 * fixed bug 223: functional binding is considered to be constant
3695 only for symbols in the CL package.
3696 * fixed bug 231: SETQ did not check the type of a variable being set
3697 (reported by Robert E. Brown)
3698 * A new optimization for MAKE-INSTANCE has been included, fixing
3699 various bugs (including relating to :ALLOCATION :CLASS slots and
3700 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3702 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3703 ** As required by ANSI, LOOP now disallows anonymous collection
3704 clauses such as COLLECT I in conjunction with aggregate boolean
3705 clauses such as THEREIS (= I 1);
3706 ** LOOP now signals an error when any variable is reused in the
3707 same loop (including the potentially useful construct analogous
3708 to WITH A = 1 WITH A = (1+ A);
3709 ** IT is only a special loop symbol within the first clause of a
3710 conditional loop clause;
3711 ** LOOP with a typed iteration variable over a hashtable now
3712 signals a type error iff it should.
3713 * fixed some other bugs revealed by Paul Dietz' test suite:
3714 ** FILE-STREAM now names the class previously known as FD-STREAM;
3715 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3716 argument) no longer signals an error;
3717 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3718 of the slot symbol, rather than using the current package
3719 ((:CONC-NAME "") continues to intern the slot's name in the
3721 * incremented fasl file version number, because of the incompatible
3722 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3723 of the new implementation of DEFINE-COMPILER-MACRO.
3725 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3726 * Support for building SBCL for MIPS platforms running in
3727 little-endian mode has now been checked in, and basic
3728 functionality on said platforms verified.
3729 * minor incompatible change: PCL now records the pathname of a file
3730 in which methods and the like are defined, rather than its
3732 * minor incompatible change: TRUENAME now considers the truename of
3733 a file naming a directory to be the pathname with :DIRECTORY
3734 component indicating that directory.
3735 * minor incompatible change: a NAMED clause in the extended form of
3736 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3737 reason for the previous behaviour is unclear.
3738 * more systematization and improvement of CLOS and MOP conformance
3739 in PCL (thanks to Gerd Moellman and Pierre Mai):
3740 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3742 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3743 primary methods with no specializers;
3744 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3746 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3747 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3748 FORWARD-REFERENCED-CLASSes; error reporting on
3749 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3751 ** SXHASH on CLOS instances now uses a slot internal to the
3752 instance to return different numbers on distinct instances,
3753 while preserving the same return value through invocations of
3755 ** DEFMETHOD signals errors when methods with longer incongruent
3756 lambda lists are added to generic functions;
3757 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3758 CLASS, as specified in AMOP;
3759 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3760 on the order returned by the primary method for classes of
3761 class STANDARD-CLASS;
3762 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3763 * fixed some bugs shown by Paul Dietz' test suite:
3764 ** DOLIST puts its body in TAGBODY;
3765 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
3767 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
3768 value producing form;
3769 ** if more variables are given to PROGV than values, extra
3770 variables are bound and made to have no value;
3771 ** NSUBSTITUTE on list arguments gets the right answer with
3773 ** ELT signals an error of type TYPE-ERROR when the index argument
3774 is not a valid sequence index;
3775 ** LOOP signals (at macroexpansion time) an error of type
3776 PROGRAM-ERROR when duplicate variable names are found;
3777 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
3778 ** FUNCALL of special-operators now cause an error of type
3780 ** PSETQ now works as required in the presence of side-effecting
3781 symbol-macro places;
3782 ** NCONC accepts any object as its last argument;
3783 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
3785 ** loop-for-as-package does not require a package to be explicitely
3787 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
3789 * fixed bug 166: compiler preserves "there is a way to go"
3790 invariant when deleting code.
3791 * fixed bug 172: macro lambda lists with required arguments after
3792 &REST arguments now cause an error to be signalled. (thanks to
3794 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
3795 bug. (thanks to Matthew Danish)
3796 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
3798 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
3799 arguments are lexically rebound. (thanks to Gerd Moellmann and
3801 * fixed bug 194: error messages are now more informative when there
3802 is no primary method applicable in a call to a generic
3803 function. (thanks to Gerd Moellmann)
3804 * fixed bug in command line argument checking (thanks to Julian
3806 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
3807 (thanks to Matthew Danish)
3808 * incremented fasl file version number, because of the
3809 SXHASH-related changes in the layout of CLOS data structures
3811 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
3812 * minor incompatible change: The runtime (the Unix executable named
3813 "sbcl") is now much pickier about the .core files it will load.
3814 Essentially it now requires .core files to descend from the same
3815 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
3816 as the runtime does. (The intent is to prevent the crashes which
3817 can occur, and which can even be reported as mysterious failures,
3818 when people patch the sources or change the build parameters
3819 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
3820 sbcl and .core files.)
3821 * fixed bug: VALUES-LIST is no longer optimized away.
3822 * fixed bug 142: The FFI conversion of C string values to Lisp
3823 string values no longer conses excessively. (thanks to Nathan
3824 Froyd porting Raymond Toy's fix to CMU CL)
3825 * began to systematize and improve MOP conformance in PCL (thanks to
3826 Nathan Froyd, Gerd Moellman and Pierre Mai):
3827 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
3829 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
3830 ** FINALIZE-INHERITANCE is now called on class finalization;
3831 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
3832 argument precedence order.
3833 * fixed bug 202: The compiler no longer fails on functions whose
3834 derived types contradict their declared type.
3835 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
3836 so it can be non-toplevel.
3837 * The fasl file version number has changed (because of the new
3838 implementation of DEFMACRO).
3839 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
3840 safe code, that any length requirement by their type-specifier
3841 argument is valid. The exceptions to this are described in bug
3843 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
3844 functions now check the types of their inputs as required by ANSI.
3845 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
3846 introduced symbol is DECLAREd to be SPECIAL.
3847 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
3848 * fixed bug: :COUNT argument to sequence functions may be negative
3849 * fixed bug: body of DO-SYMBOLS may contain declarations
3850 * fixed bug: PUSHNEW now evaluates its arguments from left to right
3851 (reported by Paul F. Dietz, fixed by Gerd Moellman)
3852 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
3853 symbol macro only once
3854 * fixed printing of call frame when argument list is unavailable
3855 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
3856 * compiler no longer signals WARNING on unknown keyword
3859 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
3860 * A beta-quality port to the mips architecture running Linux,
3861 based on the old CMUCL backend, has been made. It has been tested
3862 on a big-endian kernel, and works sufficiently well to be able to
3863 rebuild itself; it has not been tested in little-endian mode.
3864 * fixed an inconsistency between gencgc.c and purify.c which made
3865 dumping/loading .core files unreliable
3866 * fixed bug 120a: The compiler now deals correctly with IFs where
3867 the consequent is the same as the alternative, instead of
3868 misderiving the return type. (thanks to Alexey Dejneka)
3869 * fixed bug 113: Logical pathnames are now dumpable (the logical
3870 host is resolved at load-time, throwing an error if it is not
3872 * fixed bug 174: FORMAT's error message is slightly clearer when a
3873 non-printing character is used in a format directive.
3874 * fixed several bugs in compiler checking of type declarations, i.e.
3875 violations of the Python "declarations are assertions" principle
3876 (thanks to Alexey Dejneka)
3877 * fixed several bugs in PCL's error checking (thanks to Gerd
3879 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3881 * fixed bug in compilation of functions as first class values
3882 (thanks to Antonio Martinez-Shotton)
3883 * The compiler's handling TYPE-ERRORs which it can prove will
3884 inevitably happen at runtime has been cleaned up and corrected
3885 in several ways. (thanks to Alexey Dejneka)
3886 * improved argument type checking for various basic arithmetic
3887 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3888 lavished on them in the past that they can be compiled in many
3889 ways in different special cases
3890 * fixed bug 181: compiler checks validity of user supplied type
3892 * cleaned up code flushing in optimization: Function calls which
3893 should signal errors for safety purposes (e.g. which ANSI says
3894 should signal errors when their arguments are of incorrect type)
3895 are no longer optimized away.
3896 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3897 * incremented fasl file version number, because changes in the
3898 implementation of sequence functions like COERCE caused
3899 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3900 in old inline expansions) to become undefined. (Actually these
3901 changes were later undone, so we might very well be binary
3902 compatible with 0.7.7 after all, but leaving the version number
3903 incremented seemed like the simplest and most conservative
3906 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3907 * An alpha-quality port to the parisc architecture running Linux,
3908 based on the old CMUCL backend, has been made. This, even more so
3909 than the other backends, should be considered still a work in
3910 progress; known problems include that the Linux kernel in 64-bit
3911 mode does not propagate the correct sigcontext structure to
3912 userspace, and consequently SBCL on a parisc64 kernel will not
3914 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3915 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3916 suppressed.) Also now that the compiler is looking at declarations
3917 in the environment, it checks optimization declarations as well,
3918 and suppresses inlining when (> DEBUG SPEED).
3919 * More fixes have been made to treatment of floating point exception
3920 treatment and other Unix signals. In particular, floating point
3921 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3922 * The detection and handling of control stack exhaustion (infinite
3923 or very deeply nested recursion) has changed. Stack exhaustion
3924 detection is now done by write-protecting pages at the OS level
3925 and applies at all optimization settings; when found, a
3926 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3927 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3928 be caught using IGNORE-ERRORS.
3929 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3930 correctly when transforming recursive LABELS functions to LETs.
3931 (thanks to Alexey Dejneka)
3932 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3933 that are names of constants or global variables.
3934 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3935 alien routines with docstrings.
3936 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3937 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3939 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3940 (thanks to Eric Marsden)
3941 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3942 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3943 * Bug fix: The SPARC backend can now compile functions involving
3944 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3945 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3946 to a functions expecting a PATHNAME-DESIGNATOR.
3947 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3948 lambda lists. (thanks to Alexey Dejneka)
3949 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3950 functions so that EXPORTing the name of the class doesn't cause
3951 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3952 to Antonio Martinez for reporting this)
3953 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3954 constant-folded without failing an assertion. (thanks to Einar
3955 Floystad Dorum for reporting this)
3956 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3957 types are now dealt with more correctly by the compiler.
3958 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3959 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3960 behaviour analogous to RENAME-FILE. This puts its behaviour more
3961 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3963 * The fasl file version number has changed again. (because of the
3964 bug fix involving the names of PCL MAKE-INSTANCE functions)
3966 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3967 * bug fix: Floating point exceptions are treated much more
3968 consistently on the x86/Linux and PPC/Linux platforms.
3969 * Array initialization with :INITIAL-ELEMENT is now much faster for
3970 cases when the compiler cannot open code the array creation, but
3971 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3972 array accesses have also seen a speed increase.
3973 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3974 specified. (This was at the root of some bad interactions between
3975 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3977 * bug fix: Internal error arguments for undefined functions are now
3978 computed correctly on the PPC/Linux platform.
3979 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3980 Raymond Toy's patch for CMU CL)
3981 * Support for the Solaris 9 operating environment has been included
3982 (thanks to Daniel Merritt)
3983 * A very ugly but hopefully complete draft of the missing FFI chapter
3984 of the manual has been created by reformatting the corresponding
3985 CMU CL manual chapter into (currently very ugly and incoherent)
3986 DocBook and bringing it up to date for SBCL behavior. Thus, the
3987 manual is now essentially complete, at least by my extreme
3988 once-and-only-once standards, whereby it's acceptable to refer to
3989 the doc strings of SB-EXT functions as the primary documentation.
3990 * The fasl file version number has changed again, due to cleanup of
3991 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3992 is no longer a static symbol.)
3994 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3995 * SBCL now builds with OpenMCL (version 0.12) as the
3996 cross-compilation host; also, more progress has been made toward
3997 bootstrapping under CLISP.
3998 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4000 * bug 158 fixed: The compiler can now deal with integer loop
4001 increments different from 1; fixing this turned out also to fix
4003 * bug 169 fixed: no more bogus warnings about using lexical bindings
4004 despite the presence of perfectly good SPECIAL declarations (thanks
4005 to David Lichteblau)
4006 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4007 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4008 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4010 * bug 180 fixed: Method combination specifications no longer ignore
4011 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4012 * bug fix: Structure type predicate functions now check their argument
4013 count as they should.
4014 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4015 correctly. (thanks to Pierre Mai)
4016 * minor incompatible change: The --noprogrammer option is deprecated
4017 in favor of the new --disable-debugger option, which is very similar.
4018 (The major difference is that it takes effect at a slightly different
4019 time at startup, causing handling of errors in --sysinit and
4020 --userinit files will be affected differently.) The
4021 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4022 been added to allow this functionality to be controlled from ordinary
4023 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4024 maintainers, who might want to run non-interactive scripts to
4025 build SBCL cores which will later be used interactively.)
4026 * minor incompatible change: The LOAD function no longer, when given
4027 a wild pathname to load, loads all files matching that pathname.
4028 Instead, an error of type FILE-ERROR is signalled.
4030 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4031 * bug 147 fixed: The compiler preserves its block link/count
4032 invariants more correctly now so that it doesn't crash. (thanks
4034 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4036 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4037 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4038 no-value-for-this-character as NIL (as specified by ANSI).
4039 * HOST-NAMESTRING on physical pathnames now returns a string that is
4040 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4041 (thanks to Christophe Rhodes)
4042 * The Alpha port handles icache flushing more correctly. (thanks to
4044 * More progress has been made toward bootstrapping under CLISP. (thanks
4045 to Christophe Rhodes)
4046 * The fasl file format has changed again, because dynamic loading
4047 on OpenBSD (which has non-ELF object files) motivated some cleanups
4048 in the way that foreign symbols are transformed and passed around.
4049 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4050 is no longer treated as whitespace by the reader, but instead as
4051 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4052 |A
\7fB|, instead of A as it used to.
4054 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4055 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4056 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4057 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4058 this as of 0.7.1.45, but was left out of the previous news section
4059 (thanks to Dan Barlow)
4060 * SBCL now runs on the Solaris operating system on SPARC architectures
4061 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4062 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4063 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4064 * SPARC backend cleanups, allowing builds of cores optimized for V8
4065 and V9 SPARCS, and also emission of code targeted to a particular
4066 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4068 * SBCL is closer to bootstrapping under CLISP, thanks to various
4069 fixes by Christophe Rhodes.
4070 * The fasl file format has changed again, to allow the compiler's
4071 INFO database to support symbol macros.
4072 * The user manual (in doc/) is formatted into HTML more nicely.
4073 (thanks to coreythomas)
4074 * The system is smarter about SUBTYPEP relationships, especially
4075 those involving NOT types (including types such as ATOM which are
4076 represented internally using NOT types). Thus SUBTYPEP is less
4077 likely to return (VALUES NIL NIL) in general, and in particular
4078 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4080 * The fasl file format has changed again, because the internal
4081 representation of types now includes a new slot to support the new
4082 SUBTYPEP-of-NOT-types logic.
4083 * (not a change in the main branch of SBCL, but a related prototype
4084 which can hopefully be merged into the main branch of SBCL in the
4085 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4086 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4087 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4088 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4089 dispatch macro character combinations. (thanks to Alexey Dejneka)
4090 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4091 that superficially look like logical namestrings correctly.
4092 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4094 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4095 default supplied-p) for &optional and &key arguments. (thanks to
4098 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4099 * incompatible change: The compiler is now less aggressive about
4100 tail call optimization, doing it only when (> SPACE DEBUG) or
4101 (> SPEED DEBUG). (This is an incompatible change because there are
4102 programs which relied on the old CMU-CL-style behavior to optimize
4103 away their unbounded recursion which will now die of stack overflow.)
4104 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4105 for non-GENCGC systems has been increased to 20M (since that
4106 seems much closer to the likely performance optimum for modern
4107 systems than the old 4M value was)
4108 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4109 and *DEBUG-PRINT-LEVEL*
4110 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4111 of CMU CL's support for SPARC, and various endianness and other
4112 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4113 * new syntactic sugar for the Unix command line: --load foo.bar is now
4114 an alternate notation for --eval '(load "foo.bar")'.
4116 ** The system now detects stack overflow and handles it gracefully,
4117 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4118 optimization settings. (This is a good thing in general, and
4119 its introduction in this version should be particularly timely
4120 for anyone whose code fails because of suppression of tail
4122 ** The system now hunts for the C variable "environ" in a more
4123 devious way, to avoid segfaults when the C library version differs
4124 between compile time and run time. (thanks to Christophe Rhodes)
4125 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4126 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4127 ** The compiler no longer issues bogus style warnings for undefined
4128 classes in the same source file as the DEFCLASSes which defined
4129 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4131 ** fixes in CONDITION class precedence list for undefined function
4132 errors (thanks to Alexei Dejneka)
4133 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4134 correctly. (thanks to Dan Barlow)
4135 ** portability fixes aiming at bootstrapping under CLISP (thanks
4136 to Dave McDonald and Christophe Rhodes)
4137 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4138 ** fixes in type translation and and type inference (thanks to
4140 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4141 ** various fixes in the new ports (thanks to Dan Barlow)
4142 * several changes related to debugging:
4143 ** suppression of tail recursion, as noted above
4144 ** stack overflow detection, as noted above
4145 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4146 is now the default. (For some time encapsulation has been more
4147 reliable than the breakpoint-based :ENCAPSULATE NIL
4148 implementation, at least on X86 systems; and I just noticed that
4149 encapsulation also seems closer to the spirit of the ANSI
4152 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4154 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4155 up properly again. (There was a packaging bug in 0.7.0 which
4156 left their definitions in SB-SYS::LOAD-FOREIGN and
4157 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4158 vital for most things which interface to C-level interfaces,
4159 like extensions working with sockets or databases or
4160 Perl-compatible regexes or whatever, and the need to fix
4161 this bug is the main reason that 0.7.1 was released so
4163 ** DEFGENERIC is now choosier about the methods it redefines, so that
4164 reLOADing a previously-LOADed file containing DEFGENERICs does
4165 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4166 cycle now works as it should. (thanks to Alexey Dejneka)
4167 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4168 fixed by Christophe Rhodes. (He actually submitted this patch
4169 months ago, and I delayed until after 0.7.0.)
4170 ** Bug 111 (internal compiler confusion about runtime checks on
4171 FUNCTION types) was fixed by Alexey Dejneka.
4172 * Some internal cleanups (getting rid of variables which aren't
4173 needed now that the byte interpreter is gone) caused the fasl
4174 file format number to change again.
4176 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4177 * major incompatible change: The default fasl file extension, i.e. the
4178 default extension for files produced by COMPILE-FILE, has changed
4179 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4181 ** There are many changes in the implementation of the compiler.
4182 SBCL is now essentially a compiler-only implementation of ANSI
4183 Common Lisp. EVAL still "interprets" a few special cases, but
4184 almost all the interesting cases are handled by creating
4185 a LAMBDA expression, calling COMPILE on it, then calling
4186 FUNCALL on the result.
4187 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4188 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4189 Since the code is newer, there might still be some new bugs
4190 (though not as many as before Martin Atzmueller's fixes:-). But
4191 the new code is substantially simpler and clearer, and hopefully
4192 any remaining bugs will be simpler, less fundamental, and more
4193 fixable then the bugs in the old code.
4194 ** The revised compiler is still a little unsteady on its feet.
4196 *** The debugging information it produces (particularly the names
4197 of FUNCTION objects) is sometimes much less useful than what
4198 the old compiler produced.
4199 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4200 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4201 within a MACROLET) has been temporarily weakened.
4202 ** There are new compiler optimizations for various functions:
4203 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4204 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4205 *** the math functions TRUNCATE, FLOOR, and CEILING
4206 *** the function-of-all-trades COERCE
4207 Mostly these should be transparent, but there's one
4208 potentially-annoying problem (bug 117): when the compiler
4209 inline-expands a function and does type analysis on the result,
4210 it can create control paths which have type mismatches, and
4211 when it can't prove that those control paths aren't taken,
4212 it will issue WARNINGs about the type mismatches. This is
4213 a particular problem in practice for the new sequence functions.
4214 It's not clear how this should be fixed, and for now, a
4215 workaround is given in the entry for 117 in the BUGS file.
4216 ** (Because of the interaction between the two previous items --
4217 occasional inlining problems and new inline expansions -- some
4218 of the new sequence function optimizations won't really kick in
4219 completely until debugging information, and then inlining, are
4220 straightened out in some future version.)
4221 * minor incompatible changes:
4222 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4223 DIRECTORY no longer implicitly promotes NIL slots of its
4224 pathname argument to :WILD. In particular, when you ask for the
4225 contents of a directory (which you used to be able to do without
4226 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4227 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4228 ** changes in behavior that ANSI explicitly defines to be
4229 implementation dependent:
4230 *** The new compiler-only implementation still conforms with ANSI,
4231 but acts a little different than before. Besides the obvious
4232 changes in performance tradeoffs (that the cost per form passed
4233 to EVAL has gone up, and the cost per form executed by EVAL
4234 has gone down), the behavior of the system changes a little
4235 because there are no longer any interpreted function objects.
4236 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4237 e.g. doing COMPILE on the output of interactive DEFUN is
4239 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4241 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4242 has changed from (:CL) to NIL.
4243 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4244 e.g. #\Newline and #\Tab, don't have names specified in the
4245 ANSI Common Lisp standard, is now based on their ASCII symbolic
4246 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4247 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4248 are no longer used for output.
4249 ** changes in internal implementation constants:
4250 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4251 4 million. (If your application spends a lot of time GCing and
4252 you have a lot of RAM, you might want to experiment with
4253 increasing it even more.)
4254 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4255 However, almost all old code should still continue to work without
4256 immediate update, as SB-C-CALL is now a (deprecated) nickname
4258 ** Old operator names in the style DEF-FOO are now deprecated in
4259 favor of new corresponding names DEFINE-FOO, for consistency with
4260 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4261 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4262 internal symbols, but a few supported extensions like
4263 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4264 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4265 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4266 etc. as you get deeper into recursive calls to the debugger
4267 command loop, instead of the old "5]", "5]]", "5]]]"
4268 sequence. (I was motivated to do this when squabbles between
4269 ILISP and SBCL left me very deeply nested in the debugger. In the
4270 short term, this change will probably provoke more ILISP/SBCL
4271 squabbles, but hopefully it will be an improvement in the long run.)
4272 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4273 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4274 function, since declaiming return types involving aliens is
4275 (1) annoyingly messy to do by hand and (2) vital to efficient
4276 compilation of code which calls such functions.
4277 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4278 longer reexported by the SB-EXT package. They're solely useful
4279 for alien code, so it seems more logical that you should get
4280 them from the SB-ALIEN package, not in SB-EXT.
4281 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4282 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4283 features. Instead, the code that they used to control is always
4284 built into the system.
4285 * many other bug fixes
4286 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4287 advantage of the new EVAL-WHEN stuff and to clean them up in
4288 general, and they are now more ANSI-compliant in a number of
4289 ways. Martin Atzmueller is responsible for a lot of this.
4290 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4292 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4293 *** correct ERROR type for various file operations
4294 *** some fixes for Lisp streams
4295 *** DEFMETHOD syntax checking
4296 *** changing old weird representation of debug information as
4297 strings (which, among their other deficiencies, don't transform
4298 correctly when you rename packages, and don't change their
4299 print representation when you change things like *PACKAGE*
4300 and *PRINT-LENGTH*) to symbols and lists of symbols
4301 He also made several improvements and fixed several bugs in DESCRIBE.
4302 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4304 *** misbehavior of WRITE-STRING/WRITE-LINE
4305 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4306 and several other LOOP problems as well
4307 *** DIRECTORY when similar filenames are present
4308 *** DEFGENERIC with :METHOD options
4309 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4310 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4311 *** argument ordering in FIND with :TEST option
4312 *** mishandled package designator argument in APROPOS-LIST
4313 *** various problems in the backquote readmacro
4314 *** a bug in APROPOS
4315 *** probably some others that I'm not describing very well here,
4316 since the CVS log documents them by reference to sbcl-devel
4317 messages, and the SourceForge archives aren't working well.:-(
4318 ** Dan Barlow improved the Alpha port (and is making progress on the
4319 PPC port, for those of you who think different).
4320 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4321 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4322 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4323 continues to work on the SPARC port (for those of you in a position
4324 to look down upon our little PC-compatible boxes from a great height).
4325 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4326 and uses that copy, rather than the current dynamic value, when
4327 it's trying to decide whether to truncate output. Thus e.g.
4328 (let ((*print-lines* 50))
4329 (pprint-logical-block (stream nil)
4331 (let ((*print-lines* 8))
4332 (print (aref possiblybigthings i) stream)))))
4333 should now truncate the logical block only at 50 lines, instead of
4334 often truncating it at 8 lines, as it did before.
4335 * The doc/cmucl/ directory, containing old CMU CL documentation
4336 from the time of the fork, is no longer part of the base system.
4337 SourceForge has shut down its anonymous FTP service, and with it
4338 my original plan for distributing the old CMU CL documentation
4339 there. For now, if you need these files you can download an old
4340 SBCL source release and extract them from it.
4341 * The fasl file version number changed again, for dozens of reasons,
4342 some of which are apparent above.
4344 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4345 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4346 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4347 patch, so that DISASSEMBLE output is much nicer.
4348 * The code in the SB-PROFILE package now seems reasonably stable.
4349 I still haven't decided what the final interface should look like
4350 (I'd like PROFILE to interact cleanly with TRACE, since both
4351 facilities use function encapsulation) but if you have a need
4352 for profiling now, you can probably use it successfully with
4353 the current CMU-CL-style interface.
4354 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4355 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4356 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4357 link now returns the dangling link itself, and for similar
4358 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4359 link itself. (In these cases the old code signalled an error and
4360 looped endlessly, respectively.) Thus, DIRECTORY now works even
4361 in the presence of dangling and cyclic symbolic links.
4362 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4363 is now a supported extension again, since the consensus on
4364 sbcl-devel was that it can be useful for ordinary development
4365 work, not just for debugging SBCL itself.
4366 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4367 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4368 that currently-defined functions might be redefined later with
4369 different return types.
4370 * Hash tables can be printed readably, as inspired by CMU CL code
4371 of Eric Marsden and SBCL code of Martin Atzmueller.
4372 * better error handling in CLOS method combination, thanks to
4373 Martin Atzmueller porting Pierre Mai's CMU CL patches
4374 * more overflow fixes for >16Mbyte I/O buffers
4375 * A bug in READ has been fixed, so that now a single Ctrl-D
4376 character suffices to cause end-of-file on character streams.
4377 In particular, now you only need one Ctrl-D at the command
4378 line (not two) to exit SBCL.
4379 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4381 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4382 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4383 does the right thing.
4384 * The implementation of some type tests, especially for CONDITION
4385 types, is now tidier and maybe faster, due to CMU CL code
4386 originally by Douglas Crosher, ported by Martin Atzmueller.
4387 * Some math functions have been fixed, and there are new
4388 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4389 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4390 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4391 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4392 likely to be built into sbcl-0.7.0.)
4393 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4394 CL, ported to SBCL by Martin Atzmueller)
4395 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4396 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4397 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4398 * There's a new slam.sh hack to shorten the edit/compile/debug
4399 cycle for low-level changes to SBCL itself, and a new
4400 :SB-AFTER-XC-CORE target feature to control the generation of
4401 the after-xc.core file needed by slam.sh.
4402 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4403 COMPILE-FILE is no longer supported, so that now every function
4404 gets an entry point, so that block compilation looks a little
4405 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4406 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4407 returns the number of bytes consed since the system started,
4408 rather than the number consed since the first time the function
4409 was called. (The new definition parallels ANSI functions like
4410 CL:GET-INTERNAL-RUN-TIME.)
4411 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4412 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4413 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4414 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4415 * Fasl file version numbers are now independent of the target CPU,
4416 since historically most system changes which required version
4417 number changes have affected all CPUs equally. Similarly,
4418 the byte fasl file version is now equal to the ordinary
4421 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4422 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4423 is no longer recognized. I apologize for this, because it was
4424 listed in SB-EXT as a supported extension, but I found that
4425 its existing behavior was poorly specified, as well as incorrectly
4426 specified, and it looked like too much of a mess to straighten it
4427 out. I have enough on my hands trying to get ANSI stuff to work..
4428 * many patches ported from CMU CL by Martin Atzmueller, with
4429 half a dozen bug fixes in pretty-printing and the debugger, and
4430 half a dozen others elsewhere
4431 * fixed bug 13: Floating point infinities are now supported again.
4432 They might still be a little bit flaky, but thanks to bug reports
4433 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4434 as flaky as they were.
4435 * The --noprogrammer command line option is now supported. (Its
4436 behavior is slightly different in detail from what the old man
4437 page claimed it would do, but it's still appropriate under the
4438 same circumstances that the man page talks about.)
4439 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4440 are now supported, and enabled by default. Thus, the compiler can
4441 handle many floating point and complex operations much less
4442 inefficiently. (Thus e.g. you can implement a complex FFT
4444 * The compiler now detects type mismatches between DECLAIM FTYPE
4445 and DEFUN better, and implements CHECK-TYPE more correctly, and
4446 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4447 thanks to patches from Martin Atzmueller.
4448 * various fixes to make the cross-compiler more portable to
4449 ANSI-conforming-but-different cross-compilation hosts (notably
4450 Lispworks for Windows, following bug reports from Arthur Lemmens)
4451 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4452 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4453 fixed thanks to Pierre Mai's CMU CL patches.
4454 * fixes to keep the system from overflowing internal counters when
4455 it tries to use i/o buffers larger than 16M bytes
4456 * fixed bug 45a: Various internal functions required to support
4457 complex special functions have been merged from CMU CL sources.
4458 (When I was first setting up SBCL, I misunderstood a compile-time
4459 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4460 * improved support for type intersection and union, fixing bug 12
4461 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4462 more obscure bugs as well
4463 * some steps toward byte-compiling non-performance-critical
4464 parts of the system, courtesy of patches from Martin Atzmueller
4465 * Christophe Rhodes has made some debian packages of sbcl at
4466 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4467 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4468 stable, but are nonetheless usable. When he's ready, I'd be happy
4469 to add them to the SourceForge "File Releases" section. (And if
4470 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4471 * new fasl file format version number (because of changes in
4472 internal representation of (OR ..) types to accommodate the new
4473 support for (AND ..) types, among other things)
4475 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4476 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4478 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4480 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4481 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4482 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4483 * DESCRIBE now works on structure objects again.
4484 * Most function call argument type mismatches are now handled as
4485 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4486 know whether the function will be redefined before the call is
4487 executed. (The compiler could flag local calls with full WARNINGs,
4488 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4489 it doesn't keep track of enough information to know whether calls
4490 are local in this sense.)
4491 * Compiler output is now more verbose, with messages truncated
4492 later than before. (There should be some supported way for users
4493 to override the default verbosity, but I haven't decided how to
4494 provide it yet, so this behavior is still controlled by the internal
4495 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4496 src/compiler/ir1util.lisp.)
4497 * Fasl file format version numbers have increased again, because
4498 support for the Gray streams extension changes the layout of the
4499 system's STREAM objects.
4500 * The Gray subclassable streams extension now works, thanks to a
4501 patch from Martin Atzmueller.
4502 * The full LOAD-FOREIGN extension (not just the primitive
4503 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4504 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4505 but like most other programs, it defaults to copying the Unix
4506 environment from the original process instead of starting the
4507 new process in an empty environment.
4508 * Extensions which manipulate the Unix environment now support
4509 an :ENVIRONMENT keyword option which doesn't smash case or
4510 do other bad things. The CMU-CL-style :ENV option is retained
4511 for porting convenience.
4512 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4513 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4515 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4517 * A patch from Martin Atzmueller seems to have solved the SIGINT
4518 problem, and as far as we know, signal-handling now works cleanly.
4519 (If you find any new bugs, please report them!)
4520 * The system no longer defaults Lisp source file names to types
4521 ".l", ".cl", or ".lsp", but only to ".lisp".
4522 * The compiler no longer uses special default file extensions for
4523 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4524 seems to expect a single default extension for all compiled code,
4525 and there's no compelling reason to try to stretch the standard
4526 to allow two different extensions.) Instead, byte-compiled files
4527 default to the same extension as native-compiled files.
4528 * Fasl file format version numbers have increased again, because
4529 a rearrangement of internal implementation packages made some
4530 dumped symbols in old fasl files unreadable in new cores.
4531 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4532 many fewer weird special cases.
4533 * Bug #17 (differing COMPILE-FILE behavior between logical and
4534 physical pathnames) has been fixed, and some related misbehavior too,
4535 thanks to a patch from Martin Atzmueller.
4536 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4537 by Tim Moore, ported to SBCL by Martin Atzmueller.
4538 * Martin Atzmueller fixed several filesystem-related problems,
4539 including bug #36, in part by porting CMU CL patches, which were
4540 written in part by Paul Werkowski.
4541 * More compiler warnings in src/runtime/ are gone, thanks to
4542 more patches from Martin Atzmueller.
4543 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4546 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4548 * DESCRIBE now works on CONDITION objects.
4549 * The debugger now handles errors which arise when trying to print
4550 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4552 * The build system now uses an additional file, customize-target-features.lisp,
4553 to allow local modifications to the target *FEATURES* list. (The point of
4554 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4555 debugging features enabled, without having to worry about propagating it
4556 into everyone's system when I do a "cvs update".) When no
4557 customize-target-features.lisp file exists, the target *FEATURES* list
4558 should be constructed the same way as before.
4559 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4560 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4561 warn about behavior which is undefined under the ANSI spec. Note: This
4562 is specified by ANSI, but it's not very popular with programmers.
4563 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4564 macro in the SBCL sources for an example of a workaround which you
4565 might use to make portable ANSI-standard code which does what you want.
4566 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4567 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4568 when it's used as a non-toplevel form. (This is required in order
4569 to implement the DEFCONSTANT-EQX macro.)
4570 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4571 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4572 funny things, due to bugs in the implementation of EVAL-WHEN
4573 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4574 non-toplevel DEFCONSTANTs are uncommon.)
4575 * The core file version number and fasl file version number have been
4576 incremented, because the old noncompliant DEFCONSTANT behavior involved
4577 calling functions which no longer exist, and because I also took the
4578 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4579 * fixed bug 1 (error handling before read-eval-print loop starts), and
4580 redid debugger restarts and related debugger commands somewhat while
4582 ** The QUIT debugger command is gone, since it did something
4583 rather different than the SB-EXT:QUIT command, and since it never
4584 worked properly outside the main toplevel read/eval/print loop.
4585 Invoking the new TOPLEVEL restart provides the same functionality.
4586 ** The GO debugger command is also gone, since you can just invoke
4587 the CONTINUE restart directly instead.
4588 ** The TOP debugger command is also gone, since it's redundant with the
4589 FRAME 0 command, and since it interfered with abbreviations for the
4591 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4593 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4594 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4595 some porting work by Martin Atzmueller)
4596 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4597 with a boatload of patches which he ported to SBCL. Now that those
4599 ** The system tries to make sure that its low-priority messages
4600 are prefixed by semicolons, to help people who like to use
4601 syntax highlighting in their ILISP buffer. (This patch
4602 was originally due to Raymond Toy.)
4603 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4604 patches originally written by Raymond Toy.
4605 ** The compiler understands coercion between single-value and
4606 multiple-VALUES type expressions better, getting rid of some very
4607 weird behavior, thanks to patches originally by Robert MacLachlan
4608 and Douglas Crosher.
4609 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4610 lambda lists, thanks to a patch originally by Pierre Mai.
4611 ** The system no longer bogusly warns about "abbreviated type
4613 ** The compiler gets less confused by inlining and RETURN-FROM,
4614 thanks to some patches originally by Tim Moore.
4615 ** The system no longer hangs when dumping circular lists to fasl
4616 files, thanks to a patch originally from Douglas Crosher.
4617 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4618 undefined function error.
4619 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4620 in structure slot initforms) for now, documented workaround instead:-|
4621 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4622 * fixed bug 5: added stubs for various Gray stream functions called
4623 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4624 installed, at least appropriate type errors are generated
4625 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4626 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4627 consistently in DEFMETHOD forms.
4628 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4629 it doesn't seem to affect SBCL after all
4630 * The C runtime system now builds with better optimization and many
4631 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4633 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4635 * The system is now under CVS at SourceForge (instead of the
4636 CVS repository on my home machine).
4637 * The new signal handling code has been tweaked to treat register
4638 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4639 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4640 downstream, e.g. in debug-int.lisp, has implicit dependencies
4641 on the unsignedness of integer representation of machine words,
4642 and that caused the system to bomb out with infinite regress
4643 when trying to recover from type errors involving signed values,
4644 e.g. (BUTLAST '(1 2 3) -1).)
4645 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4646 (This was one of the bugs Peter Van Eynde reported back in July.)
4647 * The system now uses code inspired by Colin Walters' O(N)
4648 implementation of MAP (from the cmucl-imp@cons.org mailing
4649 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4650 inline the MAP operation, and there is more than one
4651 sequence argument to the MAP call (so that it can't just
4652 do ETYPECASE once and for all based on the type of the
4653 single sequence argument). (The old non-inline implementation
4654 of the general M-argument sequence-of-length-N case required
4655 O(M*N*N) time when any of the sequence arguments were LISTs.)
4656 * The QUIT :UNIX-CODE keyword argument has been renamed to
4657 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4658 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4660 * Raymond Wiker's patches to port dynamic loading from Linux to
4661 FreeBSD have been added.
4662 * The BUGS file is now more nearly up to date, thanks in large part
4663 to Martin Atzmueller's review of it.
4664 * The debugger now flushes standard output streams before it begins
4665 its output ("debugger invoked" and so forth).
4666 * The core version number and fasl file version number have both
4667 been incremented, because of incompatible changes in the layout
4669 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4670 used to not be called for a saved Lisp image.)
4671 * Martin Atzmueller's version of a patch to fix a compiler crash,
4672 as posted on sbcl-devel 13 September 2000, has been installed.
4673 * Instead of installing Martin Atzmueller's patch for the
4674 compiler transform for SUBSEQ, I deleted the compiler transform,
4675 and transforms for some similar consing operations.
4676 * A bug in signal handling which kept TRACE from working on OpenBSD
4678 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4679 away by constant folding
4680 * The system now defines its address space constants in one place
4681 (in the Lisp sources), and propagates them automatically elsewhere
4682 (through GENESIS and the sbcl.h file). Therefore, patching the
4683 address map is less unnecessarily tedious and error-prone. The
4684 Lisp names of address space constants have also been systematized.
4685 * CVS tags like dollar-Header-dollar have been removed from
4686 the sources, because they have never saved me trouble and
4687 they've been source of trouble working with patches and other
4688 diff-related operations.
4689 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4690 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4692 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4694 * The system has been ported to OpenBSD.
4695 * The system now compiles with a simple "sh make.sh" on the systems
4696 that it's supported on. I.e., now you no longer need to tweak
4697 text in the target-features.lisp-expr and symlinks in src/runtime/
4698 by hand, the make.sh takes care of it for you.
4699 * The system is no longer so grossly inefficient when compiling code
4700 involving vectors implemented as general (not simple) vectors (VECTOR T),
4701 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4702 which dares to use the various sequence functions on non-simple
4703 vectors, takes less of a performance hit.
4704 * There is now a primitive type predicate VECTOR-T-P
4705 to test for the (VECTOR T) type, so that e.g.
4706 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4707 can now be compiled with some semblance of efficiency. (The old code
4708 turned the type declaration into a full call to %TYPEP at runtime!)
4709 * AREF on (VECTOR T) is still not fast, since it's still compiled
4710 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4711 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4712 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4713 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4714 without making full calls to SUBTYPEP at runtime.
4715 (Some analogous efficiency issues for non-simple vectors specialized to
4716 element types other than T, or for non-simple multidimensional arrays,
4717 have not been addressed. They could almost certainly be handled the
4718 same way if anyone is motivated to do so.)
4719 * The changes in array handling break binary compatibility, so
4720 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4721 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4722 instead of (VALUES T T).
4723 * By following the instructions that Dan Barlow posted to sbcl-devel
4724 on 2 July 2000, I was able to enable primitive dynamic object
4725 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4726 functionality is not implemented (since it calls ld to resolve
4727 library references automatically, requiring RUN-PROGRAM for its
4728 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4729 try to resolve library references) is now supported.
4730 * The system now flushes the standard output streams when it terminates,
4731 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4732 them at several other probably-convenient times, e.g. in each pass of
4733 the toplevel read-eval-print loop, and after evaluating a form given
4734 as an "--eval" command-line option. (These changes were motivated by a
4735 discussion of stream flushing issues on cmucl-imp in August 2000.)
4736 * The source transform for TYPEP of array types no longer assumes
4737 that an array whose element type is a not-yet-defined type
4738 is implemented as an array of T, but instead punts, so that the
4739 type will be interpreted at runtime.
4740 * There is now some support for cross-compiling in make.sh: each of
4741 the phases of make.sh has its own script. (This should be transparent
4742 to people doing ordinary, non-cross-compile builds.)
4743 * Since my laptop doesn't have hundreds of megabytes of memory like
4744 my desktop machine, I became more motivated to do some items on
4745 my to-do list in order to reduce the size of the system a little:
4746 ** Arrange for various needed-only-at-cold-init things to be
4747 uninterned after cold init. To support this, those things have
4748 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4749 symbols with such names are now uninterned after cold init).
4750 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4751 fasl files for cold load.
4752 ** Remove the old compiler structure pooling code (which used to
4753 be conditional on the target feature :SB-ALLOC) completely.
4754 ** Redo the representation of some data in cold init to be more compact.
4755 (I also looked into supporting byte compiled code at bootstrap time,
4756 which would probably reduce the size of the system a lot, but that
4757 looked too complicated, so I punted for now.)
4758 * The maximum signal nesting depth in the src/runtime/ support code has
4759 been reduced from 4096 to 256. (I don't know any reason for the very
4760 large old value. If the new smaller value turns out to break something,
4761 I'll probably just bump it back up.)
4762 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
4764 * Many, many bugs reported by Peter Van Eynde have been added to
4765 the BUGS list; some have even been fixed.
4766 * While enabling dynamic object file loading, I tried to make the
4767 code easier to understand, renaming various functions and variables
4768 with less ambiguous names, and changing some function calling
4769 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
4770 * While trying to figure out how to do the OpenBSD port, I tried to
4771 clean up some of the code in src/runtime/. In particular, I dropped
4772 support for non-POSIX signal handling, added various comments,
4773 tweaked the code to reduce the number of compilation warnings, and
4774 renamed some files to increase consistency.
4775 * To support the new automatic configuration functionality in make.sh,
4776 the source file target-features.lisp-expr has been replaced with the
4777 source file base-target-features.lisp-expr and the machine-generated
4778 file local-target-features.lisp-expr.
4779 * fixed a stupid quoting error in make.sh so that using CMU CL
4780 "lisp -batch" as cross-compilation host works again
4782 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
4784 * DESCRIBE no longer tries to call itself recursively to describe
4785 bound/fbound values, so that it no longer fails on symbols which are
4786 bound to themselves (like keywords, T, and NIL).
4787 * DESCRIBE now works on generic functions.
4788 * The printer now prints less-screwed-up representations of closures
4789 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
4790 * A private symbol is used instead of the :EMPTY keyword previously
4791 used to mark empty slots in hash tables. Thus
4792 (DEFVAR *HT* (MAKE-HASH-TABLE))
4793 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
4794 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
4795 now does what ANSI says that it should. (You can still get
4796 similar noncompliant behavior if bang on the hash table
4797 implementation with all the symbols you get back from
4798 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
4799 This breaks binary compatibility, since tests for equality to
4800 :EMPTY are wired into things like the macroexpansion of
4801 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
4803 * There's now a minimal placeholder implementation for CL:STEP,
4804 as required by ANSI.
4805 * An obscure bug in the interaction of the normal compiler, the byte
4806 compiler, inlining, and structure predicates has been patched
4807 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
4808 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
4810 * Missing ordinary arguments in a macro call are now detected even
4811 when the macro lambda list contains &KEY or &REST.
4812 * The debugger no longer complains about encountering the top of the
4813 stack when you type "FRAME 0" to explicitly instruct it to go to
4814 the top of the stack. And it now prints the frame you request even
4815 if it's the current frame (instead of saying "You are here.").
4816 * As specified by ANSI, the system now always prints keywords
4817 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
4819 * The default initial SIZE of HASH-TABLEs is now smaller.
4820 * Type information from CLOS class dispatch is now propagated
4821 into DEFMETHOD bodies, so that e.g.
4822 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4824 is now basically equivalent to
4825 (DEFMETHOD FOO ((X SINGLE-FLOAT))
4826 (DECLARE (TYPE SINGLE-FLOAT X))
4828 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
4829 operation, without having to do run-time type dispatch.
4830 * The macroexpansion of DEFMETHOD has been tweaked so that it has
4831 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
4832 * Since I don't seem to be making big file reorganizations very often
4833 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
4834 is overflowing my ability to conveniently back them up), I've finally
4835 checked the system into CVS. (The CVS repository is on my home system,
4836 not at SourceForge -- putting it on SourceForge might come later.)
4837 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
4838 high-level GC-NOTIFY-FOO functions send their output. (There's
4839 still very little control of where low-level verbose GC functions
4840 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
4841 less than it used to -- the GC-NOTIFY-FOO functions are now under
4842 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
4843 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
4844 in only one place in the source code, and propagates it automatically
4845 everywhere that it's needed. Thus e.g. when I bump the version from
4846 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
4847 * The C source files now include boilerplate legalese and documentation
4848 at the head of each file (just as the Lisp source files already did).
4849 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
4850 to his page will be replaced with a link to his new CLiki service.
4852 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
4854 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
4855 * The build process now looks for GNU make under the default name "gmake",
4856 instead of "make" as it used to. If GNU make is not available as "gmake"
4857 on your system, you can change this default behavior by setting the
4858 GNUMAKE environment variable.
4859 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
4860 can build without error under CMU CL.
4862 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
4864 * There is now a partial SBCL user manual (with some new text and some
4865 text cribbed from the CMU CL manual).
4866 * The beginnings of a profiler have been added (starting with the
4867 CMU CL profiler and simplifying and cleaning up). Eventually the
4868 main interface should be through the TRACE macro, but for now,
4869 it's still accessed through vaguely CMU-CL-style functions and macros
4870 exported from the package SB-PROFILE.
4871 * Some problems left over from porting CMU CL to the new
4872 cross-compilation bootstrap process have been cleaned up:
4873 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4874 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4875 part when getting rid of the compiler *BACKEND* stuff.)
4876 ** The value of *NULL-TYPE* was screwed up, because it was
4877 being initialized before the type system knew the final
4878 definition of the 'NULL type. This screwed up several key
4879 optimizations in the compiler, causing inefficiency in all sorts
4880 of places. (I found it because I wanted to understand why
4881 GET-INTERNAL-RUN-TIME was consing.)
4882 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4883 PROCLAIM FTYPE information. Unfortunately this broke binary
4884 compatibility again, since now the forms output by DEFGENERIC
4885 to refer to functions which didn't exist in 0.6.3.
4886 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4887 can use the new (as of 0.6.3) transform for SOME into MAP into
4889 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4890 values to (INTEGER 0 1000000), so that the time code will no longer
4891 occasionally get blown up by Linux returning 1000000 microseconds
4892 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4893 its output conform to the ANSI spec. (Alas, this makes its output
4894 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4895 * A full call to MAP NIL with a single sequence argument no longer conses.
4896 * fixes to problems pointed out by Martin Atzmueller:
4897 * The manual page no longer talks about multiprocessing as though
4898 it were currently supported.
4899 * The ILISP support patches have been removed from the distribution,
4900 because as of version 5.10.1, ILISP now supports SBCL without us
4901 having to maintain patches.
4902 * added a modified version of Raymond Toy's recent CMU CL patch for
4903 EQUALP comparison of HASH-TABLE
4905 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4907 * The system still can't cross-compile itself with
4908 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4909 entails), but at least it can compile more of itself that way
4910 than it used to be able to, and various buglets which were uncovered
4911 by trying to cross-compile itself that way have now been fixed.
4912 * This release breaks binary compatibility again. This time
4913 at least I've incremented the FASL file format version to 2, so that the
4914 problem can be detected reliably instead of just causing weird errors.
4915 * various new style warnings:
4916 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4917 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4918 ** using the lexical binding of a variable named in the *FOO* style
4919 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4920 as specified by ANSI.
4921 * *RANDOM-STATE* is no longer automatically initialized from
4922 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4923 default behavior of the system is to repeat its behavior every time
4924 it's run. If you'd like to change this behavior, you can always
4925 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4926 old convention there was no comparably easy way to get the system to
4927 repeat its behavior every time it was run.
4928 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4929 FTYPE declarations has been removed, in favor of their ANSI
4930 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4931 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4932 the types of their sequence arguments can be determined at compile time.
4933 This is done through a new open code expansion for MAP which eliminates
4934 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4935 argument types can be determined at compile time.
4936 * The optimizer now transforms COERCE into an identity operation when it
4937 can prove that the coerced object is already of the correct type. (This
4938 can be a win for machine generated code, including the output of other
4939 optimization transforms, such as the MAP transform above.)
4940 * Credit information has been moved from source file headers into CREDITS.
4941 * Source file headers have been made more standard.
4942 * The CASE macro now compiles without complaining even when it has
4945 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4947 * (Note that the way that the PCL macroexpansions were rewritten
4948 to accommodate the change in DEFGENERIC below breaks binary
4949 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4950 not run under sbcl-0.6.2. Once we get out of alpha releases,
4951 i.e. hit release 1.0.0, we'll probably try to maintain binary
4952 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4953 and sbcl-1.4.4. Until then, however, it might be fairly common
4954 for maintenance releases to break binary compatibility.)
4955 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4957 * The reporting of unhandled signals has been changed to print some
4958 explanatory text as well as the report form. (Previously only
4959 the report form was printed.)
4960 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4961 it defines, so that the compiler no longer issues undefined function
4962 warnings for compiled-but-not-yet-loaded generic functions.
4963 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4964 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4965 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4966 section of the ANSI spec are supported.
4967 * The "" nickname for the "KEYWORD" package has been removed.
4968 The reader still handles symbol tokens which begin with a package marker
4969 as keywords, but it doesn't expose its mechanism for doing so in the
4970 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4971 * The system now issues STYLE-WARNINGs for contradictory TYPE
4972 proclamations. (Warnings for contradictory FTYPE proclamations would
4973 be nice too, but those can't be done usefully unless the type system
4974 is made smarter about FUNCTION types.)
4975 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4976 systematized, so that "*target-*.lisp is supposed to exist only on the
4977 target and imply that there's a related file which exists on the
4978 host, and *host-*.lisp is supposed to exist only on the host and imply
4979 that there's a related file which exists on the target. This involves a
4980 lot of renaming. Hopefully the acute confusion caused by the renaming
4981 will be justified by the reduction in chronic confusion..
4982 ** runtime-type.lisp -> early-target-type.lisp
4983 ** target-type.lisp -> late-target-type.lisp
4984 ** early-host-format.lisp -> early-format.lisp
4985 ** late-host-format.lisp -> late-format.lisp
4986 ** host-error.lisp -> misc-error.lisp
4987 ** early-error.lisp -> early-target-error.lisp
4988 ** late-error.lisp -> late-target-error.lisp
4989 ** host-defboot.lisp -> early-defboot.lisp
4990 ** code/misc.lisp -> code/target-misc.lisp
4991 ** code/host-misc.lisp -> code/misc.lisp
4992 ** code/numbers.lisp -> code/target-numbers.lisp
4993 ** code/early-numbers.lisp -> numbers.lisp
4994 ** early-host-type.lisp -> early-type.lisp
4995 ** late-host-type.lisp -> late-type.lisp
4996 ** host-typep.lisp -> typep.lisp
4997 ** load.lisp -> target-load.lisp
4998 ** host-load.lisp -> load.lisp
4999 ** host-disassem.lisp -> disassem.lisp
5000 ** host-insts.lisp -> insts.lisp
5001 ** byte-comp.lisp -> target-byte-comp.lisp
5002 ** host-byte-comp.lisp -> byte-comp.lisp
5003 ** host-signal.lisp -> signal.lisp
5004 ** host-defstruct.lisp -> defstruct.lisp
5005 ** late-target-type.lisp -> deftypes-for-target.lisp
5006 Furthermore, several other previously target-only files foo.lisp (e.g.
5007 hash-table.lisp and random.lisp) have been split into a target-and-host
5008 foo.lisp file and a target-only target-foo.lisp file, with their key type
5009 definitions in the target-and-host part, so that the cross-compiler will
5010 know more about target types.
5011 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5012 gone away. In their place are various *BACKEND-FOO* variables
5013 corresponding to the slots of the old structure.
5014 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5015 into the target SBCL has been fixed.
5016 * The chill.lisp system for loading cold code into a running SBCL
5018 * Support for the CMU CL "scavenger hook" extension has been removed.
5019 (It was undocumented and unused in the CMU CL sources that SBCL was
5020 derived from, and stale in sbcl-0.6.1.)
5021 * Various errors in the cross-compiler type system were detected
5022 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5023 (enabling various consistency checks). Many of them were fixed,
5024 but some hard problems remain, so the compiler is back to
5025 running without *TYPE-SYSTEM-INITIALIZED* for now.
5026 * As part of the cross-compiler type system cleanup, I implemented
5027 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5028 * I have started adding UNCROSS calls throughout the type system
5029 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5030 on cross-compiler input files will be able to go away, and various
5032 * CONSTANTP now returns true for quoted forms (as explicitly required
5035 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5037 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5038 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5039 (MAKE-LIST -1). In the longer term, it ought to become true
5040 that declarations are assertions even at SAFETY 1. For now, it's not
5041 quite true even at SAFETY 3, but it's at least more nearly true..
5042 (Note that this change seems to increases the size of the system by
5043 O(5%) and to decrease the speed of the compiler by 20% or more.)
5044 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5045 for the problem of printing dozens of lines of distracting information
5046 about low-level system machinery as part of the top stack frame
5047 on entry to the debugger when an undefined function was called.
5048 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5049 is not reset to COMMON-LISP-USER.
5050 * Compilation of stuff related to dyncount.lisp has been made conditional
5051 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5052 smaller. The various dyncount-related symbols have been moved into
5053 a new "SB-DYNCOUNT" package.
5054 * tty-inspect.lisp has been renamed to inspect.lisp.
5055 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5056 feature has gone away. (When we eventually port to other flavors of
5057 libc and/or Unix, we'll try to make the differences between flavors
5058 invisible at the user level.)
5059 * Various other *FEATURES* tags, and/or their associated conditionals,
5060 have been removed if obsolescent, or given better documentation, or
5061 sometimes given more-mnemonic names.
5063 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5065 * tidied up "make.sh" script
5066 * tidied up system directory structure
5067 * better "clean.sh" behavior
5068 * added doc/FOR-CMUCL-DEVELOPERS
5069 * many many small tweaks to output format, e.g. removing possibly-confusing
5070 trailing #\. character in DESCRIBE-INSTANCE
5071 * (EQUALP #\A 'A) no longer signals an error.
5072 * new hashing code, including EQUALP hashing
5073 * tidied up Lisp initialization and toplevel
5074 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5075 * command line argument processing
5076 * added POSIX-GETENV function to deal with Unix-ish environment variables
5077 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5078 terminating SBCL on EOF
5079 * non-verbose GC by default
5080 * There is no more "sbcl" shell script; the sbcl file is now the C
5081 runtime executable (just like CMU CL).
5082 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5084 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5085 symbol and package information as Lisp native symbol and package objects
5086 instead of strings naming symbols and strings naming packages. This way,
5087 whenever packages are renamed (as in warm init), debug information is
5088 transformed along with everything else.
5089 * tweaked the optimization policy declarations which control the building
5090 of SBCL itself. Now, among other things, the system no longer saves
5091 source location debugging information. (This helps two problems at once
5092 by reducing SBCL size and by keeping SBCL from trying to look for its
5093 sources -- which may not exist -- when reporting errors.)
5094 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5095 debugging and testing purposes
5096 * cleaned up printing, making the printer call PRINT-OBJECT for
5097 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5098 methods, giving nearly-ANSI behavior
5099 * converted almost all special variables to use *FOO* naming convention
5100 * deleted PARSE-TIME functionality, since it can be done portably
5101 * moved some files out of cold init into warm init
5102 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5104 * regularized formatting of source files
5105 * added an install.sh script
5106 * fixed ridiculous memory usage of cross-compiler by making
5107 compiler/alloc.lisp not try to do pooling unless it can hook
5108 itself into the GC of the cross-compilation host. Now the system
5109 builds nicely on my old laptop.
5110 * added :SB-ALLOC in target-features.lisp-expr
5111 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5112 was not implemented)
5113 * re-did condition handling and note reporting in the compiler. Notes
5114 are no longer handled by signalling conditions. Style warnings
5115 and warnings are handled more correctly and reported in such a way
5116 that it's easy to find one or the other in your output (so that you
5117 can e.g. figure out which of many problems caused COMPILE-FILE to
5119 * changed the severity of several compiler warnings from full WARNING
5120 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5121 compiler note reporting so that it doesn't use the condition system
5122 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5123 COMPILE-FILE command)
5124 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5125 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5126 no longer supported, since their implementation was deeply intertwingled
5127 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5128 * removed bogus "support" for compiler macros named (SETF FOO), and
5129 removed the compiler macro for SETF INFO (but only after making a fool
5130 of myself on the cmucl-imp mailing list by posting a bogus patch for
5131 DEFINE-COMPILER-MACRO..)
5132 * Compiled files containing forms which have side effects on the Lisp
5133 reader (such as DEFPACKAGE forms) are now handled more correctly.
5134 (Compiler queuing of top level lambdas has been suppressed by setting
5135 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5136 * deleted various currently-unused source files, e.g. gengc.lisp. They
5137 may be added back at some point e.g. when porting to other architectures,
5138 but until they are it's distracting to distribute them and to try to
5140 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5141 there were so many of them they're just distractions, and UNCROSS is
5142 known to be able to handle the current sources
5143 * moved PROFILE functionality into TRACE, so that it will be clear
5144 how the wrapping and unwrapping of functions when you profile them
5145 interacts with the wrapping and unwrapping of functions when you
5146 trace them. (Actually, the functionality isn't there yet, but at least
5147 the interface specification is there. Hopefully, the functionality will
5148 arrive with some future maintenance release.)
5149 * removed host-oops.lisp
5150 * changed signature of QUIT function to allow UNIX-CODE argument
5151 * fixed READ-SEQUENCE bug
5152 * tweaked verbose GC output so that it looks more like the progress
5153 output that ANSI specifies for functions like LOAD
5154 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5155 * added <http://sbcl.sourceforge.com> to the banner information printed by