1 ;;;; -*- coding: utf-8; fill-column: 78 -*-
2 changes relative to sbcl-1.0.31
3 * optimization: faster FIND and POSITION on strings of unknown element type
4 in high SPEED policies. (thanks to Karol Swietlicki)
5 * optimization: faster CONCATENATE 'STRING in low SPEED policies (reported
7 * improvement: better error signalling for bogus parameter specializer names
8 in DEFMETHOD forms (reported by Pluijzer)
9 * bug fix: DELETE-FILE once again works on logical pathnames (regression
11 * bug fix: LOGICAL-PATHNAME signals a TYPE-ERROR if pathspec is specified
13 * bug fix: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
14 removes previous default initargs (reported by Lars Rune Nøstdal and
16 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
17 lambda-lists. (reported by Peter Seibel)
18 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
19 correctly when starting from an executable core without saved runtime
20 options (reported by Faré Rideau, thanks to Zach Beane)
21 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
22 an optimization note instead. (reported by Martin Cracauer)
23 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
24 * bug fix: Have RUN-PROGRAM with :INPUT T only run the subprocess in a
25 new process group if it doesn't need to share stdin with the sbcl
26 process. (thanks to Leslie Polzer)
27 * bug fix: SATISFIES could be misoptimized to refer to a local function.
28 (reported by Stanislaw Halik)
30 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
31 * improvement: stack allocation is should now be possible in all nested
32 inlining cases: failure to stack allocate when equivalent code is manually
33 open coded is now considered a bug.
34 * improvements related to Unicode:
35 ** the Unicode character database has been upgraded to the
36 Unicode 5.1 standard, giving names and properties to a number of new
37 characters, and providing a few extra characters with case
39 ** the system now recognizes and produces names for Unicode Hangul
41 ** the EBCDIC-US external-format is now supported for octet operations
42 (as well as for stream operations).
43 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
44 be used to output toplevel compile-time effects into a separate .CFASL
46 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
47 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
49 * optimization: TRUNCATE on known single- and double-floats is upto 25%
51 * optimization: division of floating point numbers by constants uses
52 multiplication by reciprocal when an exact reciprocal exists.
53 * optimization: multiplication of single- and double-floats floats by
54 constant two has been optimized.
55 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
56 sufficient type information is available. (thanks to Leslie Polzer)
57 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
58 known structure objects are as efficient as defstruct generated accessors.
59 * optimization: unused vector creation can now be optimized away.
60 * improvement: ASDF systems can now depends on SB-INTROSPECT.
61 * improvement: a STYLE-WARNING is signalled when a generic function
62 clobbers an earlier FTYPE proclamation.
63 * improvement: the compiler is able to track the effective type of
64 generic function across method addition and removal even in the
65 absence of an explicit DEFGENERIC.
66 * improvement: DESCRIBE now reports on symbols naming undefined
67 but assumed or declared function as well.
68 * improvement: recompilation of systems using SB-GROVEL now works
69 (thanks to Leslie Polzer)
70 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
71 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
73 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
74 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
75 well as user defined declaration names.
76 ** VARIABLE-INFORMATION is now aware of alien variables.
77 * improvement: improved address space layout on OpenBSD (thanks to Josh
79 * improvement: pretty-printing of various Lisp forms has been improved
80 (thanks to Tobias Rittweiler)
81 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
82 unused were deleted in safe code. (reported by John Fremlin)
83 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
85 * bug fix: some out-of-line array predicates were missing (reported by
87 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
89 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
90 (thanks to Larry D'Anna)
91 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
92 as well. (reported by Josh Elsasser)
93 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
94 leading to possible attempts to delete the same file twice. See docstring
95 on DELETE-FILE for details. (reported by John Fremlin)
96 * bug fix: DELETE-FILE once again deletes the file named by the pathname
97 designator argument, rather than its truename. (reported by Luis
99 * bug fix: the low-level debugger had 32-bit assumptions and was missing
100 information about some array types. (thanks to Luis Oliveira)
101 * bug fix: moderately complex combinations of inline expansions could
102 be miscompiled if the result was declared to be dynamic extent.
103 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
104 form (+ <variable> <integer>) were miscompiled under certain
106 * bug fix: in some cases no compiler note about failure to stack allocate
107 was emitted, even if the objects were in fact heap allocated.
108 * bug fix: minor violation of "otherwise inaccessible" rule for stack
109 allocation could cause objects users might reasonably expect to
110 be heap allocated to be stack allocated.
111 * bug fix: DESCRIBE signalled an error for generic functions under
112 certain circumstances. (thanks to Leslie Polzer)
113 * bug fix: Fixed spelling of an error message.
115 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
116 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
117 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
118 of SB-THREAD:THREAD-ERROR-THREAD.
119 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
120 * new feature: docstrings for local and anonymous functions are no longer
121 discarded. (thanks to Leslie Polzer)
122 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
123 values in other threads.
124 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
125 about object allocation.
126 * optimization: division of a real float by a complex float is implemented
127 with a specialised code sequence.
128 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
129 keywords is an order of magnitude faster.
130 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
131 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
132 methods, and similarly for non-standard metaclass classes as long as there
133 are no methods additional on MAKE-INSTANCE.
134 * optimization: more efficient type-checks for FIXNUMs when the value
135 is known to be a signed word on x86 and x86-64.
136 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
137 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
139 * optimization: compiler is smarter about delegating argument type checks to
141 * optimization: several character functions are now compiled somewhat more
142 efficiently. (reported by Lynn Quam)
143 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
144 * improvement: less unsafe constant folding in floating point arithmetic,
145 especially for mixed complex/real -float operations.
146 * optimization: constant double and single floats are stored in native
147 unboxed format on x86[-64].
148 * optimization: smarter code for arithmetic operations with constant floats,
149 complex floats, or integers on x86[-64].
150 * optimization: smarter code for conjugate/multiplication of float complexes
151 and abs/negate of floats on x86-64.
152 * optimization: more efficient complex float and real float operations on
154 * improvement: complex float division is slightly more stable.
155 * improvement: DESCRIBE output has been reworked to be easier to read and
156 contains more pertinent information.
157 * improvement: failure to provide requested stack allocation compiler notes
158 provided in all cases (requested stack allocation not happening without a
159 note being issued is now considered a bug.)
160 * bug fix: SB-POSIX exports the documented types and functions
161 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
162 types. (reported by "abhi")
163 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
164 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
165 (thanks to Paul Khuong)
166 * bug fix: looping around HANDLER-CASE could silently consume stack space
167 on each iteration. (reported by "foobar")
168 * bug fix: better error signalling when calls to functions seeking elements
169 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
170 (reported by Tobias Rittweiler)
171 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
172 directory components now works as it used to. (various prolems reported by
173 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
174 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
175 (reported by Elliot Slaughter, thanks to Stas Boukarev)
176 * bug fix: bogus undefined variable warnings from fopcompiled references to
177 global variables. (thanks to Lars Rune Nøstdal)
178 * bug fix: foreign function names should now appear in backtraces on
179 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
180 * bug fix: SETF compiler macro documentation strings are not discarded
182 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
183 (thanks to Alex Plotnick)
184 * bug fix: SLEEP accepts large integer arguments, truncating them to
185 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
186 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
187 * bug fix: compiler notes for expensive slot type checks could be emitted
188 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
190 changes in sbcl-1.0.29 relative to 1.0.28:
191 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
192 https://bugs.launchpad.net/sbcl
193 Bugs can be reported directly there, or by sending email to
194 sbcl-bugs@lists.sourceforge.net
195 (no subscription required.)
196 * minor incompatible change: under weak type checking policy integer
197 types are weakened less aggressively.
198 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
199 allowed to return, which causes SBCL to quit with exit status 0. Previously
200 if the function returned with a small integer return value, that value
201 was accidentally reused as the exit status.
202 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
203 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
204 :HASH-FUNCTION argument. Refer to user manual for details.
205 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
207 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
208 microseconds since the Unix epoch on all platforms.
209 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
210 allows the compiler to safely elide boundedness checks for special
212 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
213 the symbol, prohibits both lexical and dynamic binding. This is mainly an
214 efficiency measure for threaded platforms, but also valueable in
216 * new feature: UNC pathnames are now understood by the system on Windows.
217 * optimization: the compiler uses a specialized version of FILL when the
218 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
220 * optimization: accesses to potentially non-simple arrays where element type
221 is known are 50% faster.
222 * optimization: compiler now generates faster array typechecking code.
223 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
225 * optimization: multidimensional array accesses in the absence of type
226 information regarding array rank are approximately 10% faster due to
227 open coding of ARRAY-RANK.
228 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
229 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
231 * optimization: result of call to VECTOR can now be stack allocated.
232 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
233 as long as the resulting array is one-dimensional and has a known
234 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
235 length of the list matches the known length of the vector does not
236 allocate the list as an intermediate step. Ditto for VECTOR and simple
238 * optimization: MAKE-ARRAY can now stack allocate in the presence of
239 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
240 known element type, and is known to be simple and one dimensional.
241 * improvement: SBCL now emits a compiler note where stack allocation was
242 requested but could not be provided (not in all cases, unfortunately)
243 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
244 * improvement: pretty-printing loop has been implemented properly. (thanks
245 to Tobias Rittweiler)
246 * documentation: CLOS slot typechecing policy has been documented.
247 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
248 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
249 pointer, leading to memory faults. (thanks to Bart Botta)
250 * bug fix: better floating point exception handling on x86/OpenBSD.
251 (thanks to Josh Elsasser)
252 * bug fix: exit status from QUIT when called under --script was lost
253 (reported by Hubert Kauker)
254 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
255 same implementation of FILL to initialize the array, even if a more
256 efficient one was available (reported by Stas Boukarev, thanks to
258 * bug fix: potential miscompilation of array stack allocation on x86 and
259 x86-64. (reported by Time Tossavainen)
260 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
261 result in their subforms being treated as top level forms. (reported by
263 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
264 than a machine register could leave garbage in the high bits of the
265 result register (bug 316325).
266 * bug fix: disable address space randomization Linux/x86-64 as well,
267 not just x86-64. (reported by Ken Olum)
268 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
269 generate incorrect code.
270 * bug fix: #201; type inference for CONS and ARRAY types could derive
271 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
272 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
273 could not be assigned to or bound with PROGV. (reported by Lorenz
275 * bug fix: the value of CL:- in the inspector was the previous expression
276 evaluated rather than the expression being evaluated.
277 * bug fix: constants can no longer be locally declared special.
278 * bug fix: signals delivered to threads started from foreign land (read:
279 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
280 thread by blocking all signals and resignalling.
281 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
282 from :INITFORM, if any.
284 changes in sbcl-1.0.28 relative to 1.0.27:
285 * a number of bugs in cross-compilation have been fixed, with the ultimate
286 result that building under (at least) clisp should be much more reliable.
287 * minor incompatible changes: echo-streams now propagate unread-char to the
288 underlying input stream, and no longer permit unreading more than one
290 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
291 frames, allowing for instance more reliable backtraces.
292 * improvement: the debugger REPL can now reference lexical variables
293 by name directly for code compiled with (DEBUG 3).
294 * improvement: errors from malformed declarations now have better source
295 paths associated with them. (thanks to Tobias Rittweiler)
296 * optimization: faster local calls on x86/x86-64
297 * bug fix: some error messages for out-of-bound array indexes confused the
298 index and the bound. (thanks to Stas Boukarev)
299 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
301 * bug fix: running regressions tests in shells without OSTYPE set now works.
302 (reported by Harald Hanche-Olsen)
303 * bug fix: more robust static space exhaustion signalling from
304 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
305 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
306 docstring away instead of storing it under names such as (LAMBDA (X)).
307 (reported by Leslie Polzer)
308 * bug fix: timers could go off in the wrong order, be delayed indefinitely
309 (thanks to Ole Arndt for the patch)
310 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
311 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
312 potentially-invalid effective methods in its cache.
313 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
314 instances as well (thanks to Paul Khuong)
315 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
316 SB-POSIX:WAITPID and their C equivalents.
317 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
319 changes in sbcl-1.0.27 relative to 1.0.26:
320 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
321 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
322 * improvement: the system either recovers from stack exhaustion or dies
323 properly as opposed to leaving the user uncertain of whether the handler
324 trampled on some random memory next to the stack or having to rely on
325 --lose-on-corruption (which is still a good idea to use in production
326 because stack exhaustion can happen in signal handlers which will likely
328 * bug fix: fix gc related interrupt handling bug on ppc (regression from
329 1.0.25.37, reported by Harald Hanche-Olsen)
330 * bug fix: work around signal delivery bug in darwin (regression from
331 1.0.25.44, reported by Sidney Markowitz)
332 * bug fix: fix ERROR leaking memory (reported by David Thompson)
334 changes in sbcl-1.0.26 relative to 1.0.25:
335 * incompatible change: an interruption (be it a function passed to
336 INTERRUPT-THREAD or a timer function) runs in an environment where
337 interrupts can be enabled. The interruption can use
338 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
339 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
340 potentially running out of stack. Keep in mind that in the absence
341 of WITHOUT-INTERRUPTS some potentially blocking operation such as
342 acquiring a lock can enable interrupts.
343 * incompatible change: GC-OFF and GC-ON are removed, as they were
344 always unsafe. Use WITHOUT-GCING instead.
345 * new feature: runtime option --disable-ldb
346 * new feature: runtime option --lose-on-corruption to die at the
347 slightest hint of possibly non-recoverable errors: running out of
348 memory, stack, alien stack, binding stack, encountering a memory
349 fault, etc. In the absence of --lose-on-corruption a warning is
351 * enhancement: detect binding stack exhaustion
352 * enhancement: detect alien stack exhaustion on x86/x86-64
353 * improvement: generally more stable and reliable interrupt handling
354 * improvement: there is a per thread interruption queue,
355 interruptions are executed in order of arrival
356 * improvement: a repeating timer reschedules itself when the it has
357 finished, but expiration times are spaced equally. If an
358 expiration time is in the past it will trigger after a short grace
359 period that may give a chance to other things to run.
360 * optimization: slightly faster gc on multithreaded builds
361 * optimization: faster WITHOUT-GCING
362 * bug fix: when JOIN-THREAD signals an error, do it when not holding
363 important locks so that the debugger/handler doesn't produce
364 recursive errors or deadlock.
365 * bug fix: real-time signals are not used anymore, so no more
366 hanging when the system wide real-time signal queue gets full.
367 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
369 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
370 * bug fix: fix random memory faults related to interrupts on alpha
371 * bug fix: fix random memory faults related to interrupts on sparc
372 * bug fix: fix deadlocks related to starting threads
373 * bug fix: fix deadlines on locks on futex platforms
374 * bug fix: restore errno in signal handlers
375 * bug fix: fix deadlocks related to hash tables
376 * bug fix: fix deadlocks in pcl
378 changes in sbcl-1.0.25 relative to 1.0.24:
379 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
380 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
381 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
382 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
383 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
384 better name and does not return values so stale on multiprocessor systems.
385 Also, HOLDING-MUTEX-P was added for about the only sane usage of
387 * improvement: unithread builds keep track of MUTEX-VALUE.
388 * improvement: reading from a TWO-WAY-STREAM does not touch the output
389 stream anymore making it thread safe to have a concurrent reader and
390 a writer, for instance, in a pipe.
391 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
392 arguments, making compiler-macros for SETF-functions able to inspect
393 their constant arguments.
394 * improvement: COMPILE-FILE reports times with millisecond accuracy
395 (thanks to Luis Oliveira)
396 * optimization: CHAR-CODE type derivation has been improved, making
397 TYPEP elimination on subtypes of CHARACTER work better. (reported
398 by Tobias Rittweiler, patch by Paul Khuong)
399 * bug fix: setting alien structure fields of type struct by value now
400 computes the right offset for the memory copy.
401 * bug fix: compilation problem involving inlined calls to aliens with
402 result type VOID. (reported by Ken Olum)
403 * bug fix: #235a; sequential inline expasion in different policies no
404 longer reuses the functional from the previous expansion site.
405 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
406 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
407 * bug fix: named ENUMs in multiply-referenced alien record types no longer
408 cause an implied type redefinition. Regression from 1.0.21.29.
409 * bug fix: sign-extension of small signed return values now works with C
410 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
411 * improvements to the Windows port:
412 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
413 Westfold, thanks to Rudi Schlatte)
415 changes in sbcl-1.0.24 relative to 1.0.23:
416 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
417 vector of a multidimensional SIMPLE-ARRAY.
418 * new feature: the system now signals a continuable error if standard
419 readtable modification is attempted. (thanks to Tobias Rittweiler)
420 * new feature: DIRECTORY has been extended with a non-standard keyword
421 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
422 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
423 has been robustified and documented better. (thanks to Robert Goldman)
424 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
425 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
426 * tradeoff: constant FORMAT control strings are now compiled unless
427 SPACE > SPEED (previously only when SPEED > SPACE.)
428 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
430 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
432 * bug fix: lexical type declarations are now correctly reported by
433 SB-CLTL2. (reported by Larry D'Anna)
434 * bug fix: STRING-TO-OCTETS did not handle :START properly when
435 using UTF-8 as external format. (thanks to Luis Oliveira)
436 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
437 are signalled correctly. (thanks to Stas Boukarev)
438 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
439 designator. (thanks to Tobias Rittweiler)
440 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
441 designator, and returns T instead of the function. (thanks to
443 * bug fix: direct superclasses of STANDARD-CLASS and
444 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
445 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
446 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
447 when no class with the named slot yet exists no longer causes a
448 compile-time style-warning.
449 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
450 in safe code. (reported by Didier Verna)
451 * bug fix: #430; nested structure constructors can stack allocate.
452 * bug fix: on some 64-bit platforms dynamic space size was truncated
453 to #xffff0000 bytes. (reported by Benjamin Lambert)
454 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
455 REPL unusable. (reported by Daniel Herring)
456 * bug fix: return values of READ-SEQUENCE did not take :START into
457 account on file streams, regressions since 1.0.12.22. (reported by
458 Thomas Russ, patch by Paul Khuong)
459 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
460 method specializer used to confuse permuation vector optimization.
461 * bug fix: system inserted bogus implicit type declarations for local
462 special variables in DEFMETHOD bodies.
463 * bug fix: #354; duplicated frames in backtraces due to
464 non-tail-call-optimized XEPs to functions with return type NIL
466 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
467 initializes structure object slots according to DEFSTRUCT initforms,
468 and DEFSTRUCT forms :INCLUDEind structure classes defined using
469 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
470 (reported by Bruno Haible and Stephen Wilson)
471 * bug fix: #395; fill-pointer output streams used now support
472 element-type BASE-CHAR as well.
473 * bug fix: compiler error when attempting to derive return value of
474 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
476 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
478 * bug fix: Mac OS X binaries should now be portable between Leopard
481 changes in sbcl-1.0.23 relative to 1.0.22:
482 * enhancement: when disassembling method functions, disassembly
483 for the associated fast function is also produced.
484 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
486 * optimization: printing with *PRINT-PRETTY* true is now more
487 efficient as long as the object being printed doesn't require
488 special handling by the pretty printer.
489 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
490 now interact correctly with type declarations.
491 * partial bug fix: PCL detects infinite recursion during wrapper
492 validation. (thanks to Attila Lendvai)
493 * bug fix: #426; nested function calls are inlined properly.
494 Previously if FOO was an inline function, in calls of the form
495 (FOO (FOO ...)) the outer call was not inlined.
496 * bug fix: long long arguments passed in registers to alien
497 functions on PowerPC Linux and NetBSD are now handled correctly
498 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
500 changes in sbcl-1.0.22 relative to 1.0.21:
501 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
502 for the shared object in the current directory, but passes the native
503 namestring of the designated pathname to the operation system's shared
504 object loading function as-it.
505 * minor incompatible change: --disable-debugger toplevel option now takes
506 effect before processing of initialization files and --eval or --load
508 * new feature: new commandline argument: --script, which supports
509 shebang lines. See documentation for details. (based on work by
511 * new feature: SAVE-LISP-AND-DIE can save current values of
512 --dynamic-space-size and --control-stack-size in the executable core,
513 causing it to skip normal runtime option processing. See documentation
514 for details. (thanks to Zach Beane)
515 * enhancement: inoccous calls to EVAL or generic functions dispatching
516 on subclasses of eg. STREAM no longer cause compiler notes to appear.
517 * enhancement: the system no longer resignals errors from --load and
518 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
519 associated with the original error to be lost. (thanks to Ariel
521 * enhancement: :DONT-SAVE keyword argument has been added to
522 LOAD-SHARED-OBJECT for controlling interaction with
523 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
524 the effects of an earlier LOAD-SHARED-OBJECT call.
525 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
526 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
527 provided. (reported by Cedric St-Jean)
528 * bug fix: circularity handling in the reader did not treat raw
529 structure slots correctly. (reported by Cedric St-Jean)
530 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
531 file descriptors when there were none.
532 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
533 was broken. (reporteed by Willem Broekema)
534 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
535 pathnames without a directory.
536 * bug fix: COMPILE-FILE did not warn about undefined variable
537 references at toplevel, and LOAD of the resulting fasl did
539 * bug fix: functions with non-required arguments used to end up with
540 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
541 * bug fix: redefining a function with non-required arguments didn't
542 update the system's knowledge about its call signature properly.
543 * bug fix: fixed #431; incompatible alien record type redefinitions
544 are detected and handled. (reported by Neil Haven)
545 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
546 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
548 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
549 after alien stack frames.
550 * bug fix: strings passed to mk{s,d}temp lacked null termination
552 changes in sbcl-1.0.21 relative to 1.0.20:
553 * new feature: the compiler is able to track the effective type of a
554 generic function across method addition and removal.
555 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
556 appropriately typed structure slots without locking.
557 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
558 information like those gathered by TIME using a programming-friendly
560 * new feature: TIME reports time taken even if the form performs a
561 non-local transfer of control.
562 * enhancement: reduced conservativism on GENCGC platforms: on
563 average 45% less pages pinned (measured from SBCL self build).
564 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
565 mutate constant symbols or violate declaimed type of the symbol.
566 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
567 sleeping on the semaphore in heavily contested semaphores.
568 * bug fix: semaphores and condition variables were not interrupt
570 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
571 owned by other threads anymore.
572 * bug fix: FIND on lists called KEY outside the specified
573 subsequence. (reported by budden)
574 * bug fix: LOG doesn't use single-float intermediate results when
575 given mixed integer and double-float arguments, leading to better
576 precision. (reported by Bob Felts)
577 * bug fix: LOG with base zero returned values of inconsistent type.
579 changes in sbcl-1.0.20 relative to 1.0.19:
580 * minor incompatible change: OPTIMIZE qualities
581 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
582 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
583 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
584 * documentation: some slot access efficiency guidelines have been
585 added to the user manual.
586 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
587 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
588 as ASSOC and MEMEBER.
589 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
590 to more efficient EQ-comparison versions more often.
591 * optimization: enhanced derivation of DOLIST iteration variable type
593 * optimization: constant folding of simple (LIST ...) forms as DOLIST
595 * optimization: runtime lookup of function definitions can be
596 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
597 * optimization: compiler is able to derive the return type of
598 (AREF (THE STRING X) Y) as being CHARACTER.
599 * optimization: CLRHASH on empty hash-tables no longer does pointless
600 work. (thanks to Alec Berryman)
601 * optimization: REPLACE deftransforms don't punt when :START1 or
603 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
604 no longer emits a code deletion note. (reported by Andrew
606 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
607 functions with an odd number of &OPTIONAL arguments, a &REST
608 argument, and one or more &KEY arguments at the call site.
609 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
610 arguments appeared at call sites as well.
611 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
612 READ-LINE &co can no longer read from them afterwards. (reported
614 * bug fix: fixed #427: unused local aliens no longer cause compiler
615 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
617 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
618 alien-stack leakage. (reported by Andy Hefner)
619 * bug fix: PROGV signals an error when an attempt to violate declared
620 type of a variable or bind a constant is made.
621 * bug fix: SET signals an error when an attempt to violate declared
622 type of a variable is made.
623 * bug fix: restart computation during the execution of a restart
624 test function no longer causes infinite recursion. (reported by
626 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
627 signals an error. (thanks to Pierre Mai)
628 * bug fix: EXPORT left symbol unexported in conflict situations.
629 (thanks to Michael Weber)
630 * bug fix: correctly handle name conflicts involving CL:NIL.
631 (thanks to Michael Weber)
632 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
633 conflicts arising from USEing package with conflicting symbols
634 correctly. (thanks to Michael Weber)
636 changes in sbcl-1.0.19 relative to 1.0.18:
637 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
638 warnings that go otherwise unhandled will be muffled if they are
639 of the type that's the value of this variable.
640 * optimization: stack allocation is slightly more efficient on x86
642 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
643 where a raw slot always is initialized using the initform whose
644 type is not know sufficiently well a compile-time are now compiled
645 correctly. (reported by John Morrison)
646 * bug fix: compiler no longer makes erronous assumptions in the
647 presence of non-foldable SATISFIES types.
648 * bug fix: stack analysis missed cleanups of dynamic-extent
649 arguments in non-let-converted calls to local functions.
650 * improvements to the Windows port:
651 ** adjusted address spaces for building on both Win32 and
652 Win64. (thanks for John Connors)
653 * fixed some bugs revealed by Paul Dietz' test suite:
654 ** interval arithmetic during type derivation used inexact integer
655 to single-float coercions.
656 ** arithmetic operations involving large integers and single
657 floats give the same results in compiled and interpreted code.
658 ** deriving the result type of COERCE no longer signals an error
659 if the derived type of the second argument is a MEMBER type
660 containing invalid type specifiers.
661 ** ADJOIN with constant NIL as second argument works correctly.
662 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
664 changes in sbcl-1.0.18 relative to 1.0.17:
665 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
666 profiles only the current thread.
667 * minor incompatible change: changes to SYMBOL-VALUE of constants
668 defined with DEFCONSTANT now signal an error.
669 * enhancement: SB-SPROF now has support for wallclock profiling,
670 and is also able to profile specific threads. REPORT output
671 has also additional sorting options.
672 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
674 * optimization: structure allocation has been improved
675 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
676 ** out of line constructors are ~10% faster.
677 ** inline constructors are ~15% faster.
678 ** inline constructors are capable of dynamic extent allocation
679 (generally on x86 and x86-64, in some cases on other platforms
681 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
683 * optimization: file compiler is now able to coalesce non-circular
684 lists, non-base strings, and bit-vectors. Additionally, constants
685 are never referenced through SYMBOL-VALUE at runtime.
686 * optimization: code defining methods on PRINT-OBJECT (and other
687 generic functions in the COMMON-LISP package) now loads faster.
688 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
690 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
691 fasl is now deleted. (reported by Attila Lendvai)
692 * bug fix: READ-LINE always returned NIL for the last line in files.
693 (reported by Yoshinori Tahara)
694 * bug fix: more accurate disassembly annotations of foreign function
695 calls. (thanks to Andy Hefner)
696 * bug fix: trimming non-simple strings and non-string string
697 designators when the there is nothing to trim works properly.
698 (thanks to James Knight)
699 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
700 (thanks to Travis Cross)
701 * fixed some bugs revealed by Paul Dietz' test suite:
702 ** NIL is a valid function name (regression at 1.0.13.38)
703 ** FILL on lists was missing its return value (regression at 1.0.12.27)
704 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
705 fill pointers properly (regression at 1.0.12.23)
706 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
707 displacement indices properly (regression at 1.0.12.23)
709 changes in sbcl-1.0.17 relative to 1.0.16:
710 * temporary regression: user code can no longer allocate closure
711 variable storage on stack, due to bug 419 without explicitly
712 requesting it. Please consult sbcl-devel for advice if you need to
713 use this feature in the meanwhile.
714 * new feature: runtime argument --control-stack-size can be used to
715 adjust thread default control stack size.
716 * enhancement: improved TIME output
717 ** all times are reported using the measured accuracy (milliseconds
718 for real and GC times, microseconds for everything else.)
719 ** processor cycle counts on x86 and x86-64.
720 ** interpreted forms are counted for both evaluator modes.
721 ** number of lambdas converted by the compiler is reported.
722 ** CPU percentage report (computed from real and total run time.)
723 ** more comprehensive run time reporting, using a condenced format
724 ** interperted form, lambda, and page fault counts are omitted
726 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
728 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
729 * optimization: two argument forms of LAST are upto ~10% faster
730 in normal SPEED policies.
731 * optimization: NCONC no longer needs to heap cons its &REST list
732 in normal SPEED policies.
733 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
735 * bug fix: UNION and NUNION work with :TEST-NOT once more,
736 regression since 1.0.9.1. (thanks to Eric Marsden)
737 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
738 since 1.0.15.36. (thanks to Paul Khuong)
739 * bug fix: LAST when always returned the whole list when given a bignum
740 as the second argument.
741 * bug fix: dynamic extent allocation of nested lists and vectors
742 could leak to otherwise accessible parts.
743 * bug fix: invalid optimization of heap-allocated alien variable
745 * bug fix: fasl header checking is less vulnerable to different
746 platform word lengths.
747 * bug fix: more correct assembler syntax for GNU binutils
748 2.18.50.0.4 support. (thanks to Marijn Schouten)
749 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
751 * bug fix: the fopcompiler can handle LOCALLY forms (with no
752 declarations) successfully. (reported by Attila Lendvai)
754 changes in sbcl-1.0.16 relative to 1.0.15:
755 * minor incompatible change: revert the changes to sb-posix's error
756 signaling added in 1.0.14.
757 * minor incompatible change: change PROBE-FILE back to returning
758 NIL whenever we can't get a truename, as was the case before 1.0.14.
759 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
760 inherits from ERROR instead of just CONDITION.
761 * new feature: SB-INTROSPECT can provide source locations for instances
762 as well. (thanks to Tobias Rittweiler)
763 * optimization: binding special variables now generates smaller code
764 on threaded platforms.
765 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
766 and cases where no :TEST is given but the compiler can infer that
767 the element to search is of type (OR FIXNUM (NOT NUMBER)).
768 * optimization: better LOGNOT on fixnums.
769 * optimization: modular arithmetic for a particular requested width
770 is implemented using a tagged representation unless a better
771 representation is available.
772 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
773 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
774 for wellformedness and returns a specialized vector. (reported by
775 Francois-Rene Rideau)
776 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
777 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
778 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
779 unscheduling timer at the same time as another timer fires.
780 * bug fix: don't reschedule timers for dead threads.
781 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
782 * bug fix: copying output from RUN-PROGRAM to a stream signalled
783 bogus errors if select() was interrupted.
784 * enhancement: add support for fcntl's struct flock to SB-POSIX.
786 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
787 * enhancement: cleaner backtraces for interactive interrupts, as
788 well as other cases where the interesting frames used to be
789 obscured by interrupt handling frames.
790 * enhancement: untracing a whole package using (UNTRACE "FOO") is
791 now supported, and tracing a whole package using (TRACE "FOO") now
792 traces SETF-functions as well.
793 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
794 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
795 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
796 * unreadably printed representation of hash-tables now includes
798 * bug fix: partially fixed #188: type propagation from assignments
799 is now more efficient.
800 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
801 'DOUBLE-FLOAT) are not flushable.
802 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
803 full address of the object, and none of the tag bits.
804 * bug fix: readably printing hash-tables now respects other printer
805 control variables. (reported by Cedric St-Jean)
806 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
807 keyword with MAKE-HASH-TABLE.
808 * bug fix: export SB-POSIX:MKSTEMP.
809 * bug fix: SORT was not interrupt safe.
810 * bug fix: XREF accounts for the last node of each basic-block as
812 * bug fix: MAKE-INSTANCE optimizations interacted badly with
813 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
814 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
815 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
816 create obsolete instances in the case of redefinition or
817 obsoletion of a superclass. (thanks to Andy Hefner)
818 * bug fix: Support for the Alpha architecture has been revived; it had
819 suffered somewhat from lack of maintenance since sbcl-1.0.
820 * improvements to the Windows port:
821 ** The system detects the codepage to use at startup, instead of
822 using the value from the saved core. (thanks to Kei Suzuki)
824 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
825 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
826 (see documentation for details.)
827 * revived support for OpenBSD (contributed by Josh Elsasser)
828 * partially fixed bug #108: ROOM no longer suffers from occasional
829 (AVER (SAP= CURRENT END)) failures.
830 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
831 bodies no longer cause a WARNING to be signalled. (reported by
833 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
834 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
835 the bug in TRUNCATE.) (reported by Michael Weber)
836 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
837 no samples. (reported by Andy Hefner)
838 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
839 no longer appear as (NIL ...) frames in backtraces.
840 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
841 is now actually exported from SB-EXT as documented. (reported by
843 * bug fix: sb-aclrepl now correctly understands how to inspect
844 single-floats on 64-bit platforms where single-floats are not boxed.
845 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
846 yet been finalized. (reported by Levente Meszaros)
847 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
848 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
849 SBCL-specific optimize qualities.
851 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
852 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
853 an executable in the search path, and does so in the child
854 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
855 been removed; it can be found in the CVS history, for somebody who
856 needs that search behavior (see the manual).
857 * minor incompatible change: compiler policy re. weakening type
858 checks has changed: now type checks are weakened only if SAFETY < 2
860 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
861 unparsing of directory pathnames as files. Analogously,
862 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
863 filename to parse into a directory pathname.
864 * enhancement: implicit generic function creation now signals a
865 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
866 users can bind handlers for and muffle around calls to LOAD.
867 * enhancement: RUN-PROGRAM allows unicode arguments and environments
868 to be used (using the default stream external format), and allows
869 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
870 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
871 strings and vectors whose element-type or simplicity is not fully
872 known at compile-time.
873 * optimization: STRING-TRIM and related functions no longer allocate
874 a new string when no trimming needs to be performed. These functions
875 are also faster than before when the input string has been declared
877 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
878 * optimization: READ-LINE is significantly faster for files containing
880 * optimization: non-open coded uses of character comparison operators
881 (e.g. char=) no longer cons when called with more than one parameter
882 on platforms supporting dynamic-extent allocation.
883 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
884 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
885 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
887 * bug fix: some sequence functions elided bounds checking when
889 * bug fix: too liberal weakening of union-type checks when SPEED >
891 * bug fix: more bogus fixnum declarations in ROOM implementation
894 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
895 * new feature: MAKE-HASH-TABLE now experimentally accepts a
896 :SYNCHRONIZED argument, which makes the hash-table safe for
897 concurrent accesses (but not iteration.) See also:
898 SB-EXT:WITH-LOCKED-HASH-TABLE, and
899 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
900 * optimization: CONCATENATE on strings is an order of magnitude faster
901 in code compiled with (> SPEED SPACE).
902 * optimization: SUBSEQ is ~50% faster on lists.
903 * bug fix: bug 417 fixed -- source location reporting is now more robust.
904 * bug fix: SUBSEQ on a list will now correctly signal an error if if
905 END is smaller then START.
906 * bug fix: SB-PROFILE will no longer report extra consing for nested
907 calls to profiled functions.
908 * bug fix: ROOM implementation had bogus fixnum declarations which
909 could cause type-errors when calling ROOM on large images.
910 * bug fix: if file compilation is aborted, the partial fasl is now
911 deleted, and COMPILE-FILE returns NIL as the primary value.
912 * bug fix: number of thread safety issues relating to SBCL's internal
913 hash-table usage have been fixed.
914 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
915 be returned from its body when the values were being returned
916 using unknown-values return convection and the W-P-O was wrapped
917 inside an UNWIND-PROTECT.
918 * bug fix: sb-posix should now compile again under Windows, enabling
921 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
922 * incompatible change: hash-table accessor functions are no longer
923 automatically protected by locks. Concurrent accesses on the same hash-table
924 from multiple threads can give inconsistent results or even corrupt the
925 hash-table completely. Multi-threaded applications should do their own
926 locking at the correct granularity. In the current implementation it is
927 still safe to have multiple readers access the same table, but it's not
928 guaranteed that this property will be maintained in future releases.
929 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
930 and will signal an error at runtime.
931 * enhancement: SB-THREAD package now exports a semaphore interface.
932 * enhancement: CONS can now stack-allocate on x86 and
933 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
935 * enhancement: nested lists can now be stack allocated on
936 platforms providing stack allocation support.
937 * enhancement: dynamic-extent support has been extended to support
938 cases where there are multiple possible sources for the stack
940 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
941 if the mutex is uncontested on Linux.
942 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
943 as specified by the CLHS. (thanks to Tobias Rittweiler)
944 * bug fix: NaN comparison now works on x86-64.
945 * bug fix: CLOSE :ABORT T on a stream with pending output now
947 * bug fix: instances of non-standard metaclasses using standard
948 instance structure protocol sometimes missed the slot type checks
950 * bug fix: known functions can be inlined in high-debug code.
952 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
953 * minor incompatible change: the MSI installer on Windows no longer
954 associates .lisp and .fasl files with the installed SBCL.
955 * minor incompatible change: :UNIX is no longer present in *FEATURES*
956 on Windows. (thanks to Luis Oliviera)
957 * new feature: SB-CLTL2 contrib module now implements
958 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
959 * optimization: scavenging weak pointers is now more efficient,
960 requiring O(1) instead of O(N) per weak pointer to identify
961 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
962 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
963 method bodies using constant slot-names when the first argument is
964 a specializer parameter for the method.
965 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
966 names, when the class of the instance is a direct instance
967 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
968 as slow as the constant slot-name case.)
969 * optimization: member type construction is now O(N) instead
971 * optimization: UNION and NUNION are now O(N+M) for large
972 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
974 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
975 now more readable in environments like Slime which display it.
976 (thanks to Tobias C. Rittweiler)
977 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
978 was able to infer the correct argument type for the object on which
979 the CAS operation was being performed.
980 * bug fix: copy propagation interfered with parallel assignment
981 semantics in local calls. (reported by Paul Khuong)
982 * bug fix: the signed modular fixnum shift compiled to wrong code on
983 x86 and x86-64. (spotted by a slight modification to some of
986 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
987 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
988 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
989 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
991 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
992 and generic function now print the object identity for anonymous
993 instances. (thanks to Attila Lendvai)
994 * enhancement: as an extension to MOP, SBCL now supports SETF of
995 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
996 (thanks to Attila Lendvai)
997 * enhancement: sb-cover has an alternate annotation mode which puts
998 the form annotations at the car of the form, instead of annotating
999 it completely. The benefit of this mode is that it shows better
1000 which forms were instrumented by the compiler.
1001 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
1002 by printer control variables. (reported by Dan Corkill)
1003 * bug fix: system leaked memory when delayed output was performed by
1004 the OS in smaller chunks then expected. (thanks to David Smith)
1005 * bug fix: system leaked memory when file streams were not closed
1007 * bug fix: large objects written to slow streams that were modified
1008 after the write could end up with the modified state written to
1009 the underlying file descriptor.
1010 * bug fix: multiple threads operating in parallel on the same stream
1011 could cause buffer-overflows.
1012 * bug fix: source location information is stored correctly
1013 (broken since 1.0.6). This bug would generally show up as the
1014 Slime debugger highlighting the wrong form when the sldb-show-source
1016 * bug fix: Branch forms are again annotated as branches in the sb-cover
1018 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1019 on x86-64. (reported by Gregory Vanuxem)
1020 * bug fix: EQUALP could return wrong results for structures with raw
1021 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1022 word). (reported by Vjacheslav Fyodorov)
1023 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1026 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1027 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1028 atomic compare-and-swap operations on threaded platforms.
1029 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1030 allows assigning a global minimum value to optimization qualities
1031 (overriding proclamations and declarations).
1032 * enhancement: closed over variables can be stack-allocated on x86
1034 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1036 * optimization: slot definition lookup is now O(1). This speeds up
1037 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1038 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1039 * optimization: ASSOC and MEMBER can now be open-coded for all
1040 combinations of keyword arguments when second argument is constant
1041 and SPEED >= SPACE. In other cases a specialized version is
1043 * bug fix: using obsoleted structure instances with TYPEP and
1044 generic functions now signals a sensible error.
1045 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1046 (reported by Kristoffer Kvello)
1047 * bug fix: backtrace construction is now more careful when making
1048 lisp-objects from pointers on the stack, to avoid creating bogus
1049 objects that can be seen by the GC.
1050 * bug fix: defaulting of values in contexts expecting more than 7
1051 variables now works on x86-64. (reported by Christopher Laux)
1052 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1054 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1055 as the property-list of a symbol.
1056 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1057 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1058 situations requested, are once again file-compileable. (reported
1061 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1062 * MOP improvement: support for user-defined subclasses of
1063 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1064 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1065 the expansion of DEFMETHOD, is responsible for generating a form
1066 which creates a list of specializers when evaluated. Additional
1067 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1068 debugging and introspective support.
1069 * minor incompatible change: the (unsupported) spinlock interface
1070 has changed: free spinlock now has the value NIL, and a held spinlock
1071 has the owning thread as its value.
1072 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1073 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1075 * enhancement: name of a socket-stream is now "a socket" instead of
1076 "a constant string".
1077 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1078 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1079 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1080 for generic functions. (Thanks to Tobias C. Rittweiler)
1081 * optimization: bignum printing speed has been improved by 20-40%
1082 (depending on the bignum size.)
1083 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1085 * bug fix: the cache used by the CLOS to store precomputed effective
1086 methods, slot offsets, and constant return values is now thread and
1088 * bug fix: generic function dispatch function updating is now thread
1089 and interrupt safe (in the sense that the known issues have been
1091 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1092 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1093 * bug fix: asdf systems with dependencies to the SB-POSIX or
1094 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1095 * bug fix: interrupt safety of applicable method computation has been
1098 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1099 * new contrib: sb-cover, an experimental code coverage tool, is included
1100 as a contrib module.
1101 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1102 significantly faster.
1103 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1104 produce more efficient code on x86-64 if the compiler can determine
1105 that (+ INDEX <constant>) does not require a bounds check and FOO
1106 has an element type at least 8 bits wide.
1107 * enhancement: a new, experimental synchronous timeout facility is
1108 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1109 * enhancement: when a symbol name conflict error arises, the
1110 conflicting symbols are always printed with a package prefix.
1111 (thanks to Kevin Reid)
1112 * enhancement: stepping is now once again supported on the SPARC and
1113 MIPS platforms. (It is also now more likely to work on CheneyGC
1115 * enhancement: sb-sprof can now also track and report accurate call
1117 * bug fixes: the treatment of non-standard subclasses of
1118 SB-MOP:SPECIALIZER is more correct.
1119 * incompatible change: PURIFY no longer copies the data from the
1120 dynamic space into the static and read-only spaces on platforms
1121 that use the generational garbage collector
1122 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1124 * bug fix: GC race condition occasionally resulting in crashes with
1125 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1127 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1129 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1130 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1131 * bug fix: an asynchronous interrupt could previously leave the
1132 system running with GC inhibited.
1133 * bug fix: a DECLARE form evaluated at top-level now causes an error
1134 rather than silently (or verbosely) returning NIL.
1135 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1136 result in a error being signalled due to source form lookup errors.
1137 (reported by Peter Graves)
1139 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1140 * incompatible change: removed writer methods for host-ent-name,
1141 host-ent-addresses -- changing the values did not update the DNS
1143 * minor incompatible change: changed experimental JOIN-THREAD interface
1144 * documentation: the manual now lists reader and writer methods
1145 in class slot documentation sections. (thanks to Richard M Kreuter)
1146 * documentation: unwinding from asyncronous events has been
1147 documented as unsafe.
1148 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1149 in multithreaded application code.
1150 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1151 platforms. (thanks to James Anderson for the optimization hint)
1152 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1154 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1155 variants no longer cons.
1156 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1157 their NOT- variants no longer cons.
1158 * optimization: EQUAL hash tables no longer use SXHASH for objects
1159 of all data types, but instead use an EQL hash for types for which
1160 EQUAL is the same as EQL.
1161 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1162 are significantly faster.
1163 * optimization: new STRING-OUTPUT-STREAM implementation is much
1164 faster for large outputs and conses 30% less on average.
1165 * enhancement: XREF information is now collected for references made
1166 to global variables using SYMBOL-VALUE and a constant argument.
1167 * enhancement: SIGINT now causes a specific condition
1168 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1169 * bug fix: FILE-POSITION used to signal an error in some cases where
1170 ANSI requires it to return NIL.
1171 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1172 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1173 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1175 * bug fix: bad type declaration in the CLOS implementation has
1176 been fixed. (reported by James Anderson)
1177 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1178 (thanks to Lutz Euler)
1179 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1180 required by the CLHS. (reported by Samium Gromoff)
1181 * bug fix: dead unbound variable references now signal an error.
1182 (reported by Marco Monteiro)
1183 * bug fix: / with an unused value was being deleted in safe code.
1184 (thanks to Marco Monteiro and Kevin Reid)
1185 * bug fix: number of characters that can be written onto a single
1186 line in a file is unlimited.
1187 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1188 been fixed by inhibiting interrupts for when GC is disabled.
1189 * bug fix: some interrupt safety issues with GETHASH, (SETF
1190 GETHASH), CLRHASH and REMHASH have been fixed.
1191 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1192 specifier no longer causes infinite recursion.
1193 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1194 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1195 * bug fix: an &environment argument with the correct variable information
1196 is passed to macros that are expanded during byte compilation.
1197 (reported by Samium Gromoff)
1198 * bug fix: a logic error was causing the hash function for bignums to
1199 have excessive amounts of collisions. (reported by Faré Rideau)
1200 * bug fix: modifying the contents of an array could change the return
1201 value of SXHASH on that array, which is only allowed for strings
1202 and bit vectors. (bug introduced in 0.9.16)
1203 * improvement: the x86-64/darwin port now passes all tests (except
1204 for the debugger tests) but should still be considered
1205 experimental until this is fixed.
1206 * improvement: a style-warning is signaled for CASE (etc) clauses with
1207 duplicate keys. (thanks to Kevin Reid)
1208 * improvement: macos/x86 and macos/x86-64 now use mach exception
1209 handlers for dealing with illegal instructions (for trapping and
1210 error handling) and memory protection violations (for GC).
1212 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1213 * new platform: experimental support for x86-64/darwin (MacOS).
1214 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1215 and getnameinfo sockets functions are used instead of gethostbyaddr
1216 and gethostbyname, on platforms where the newer functions are available.
1217 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1219 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1220 don't print the startup banner, but behave as if --noinform was passed
1221 as a command line argument. (thanks to Kevin Reid)
1222 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1223 * optimization: code using alien values with undeclared types is much faster.
1224 * optimization: the compiler is now able to open code SEARCH in more cases.
1225 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1226 * bug fix: using standardized COMMON-LISP special variables as loop
1227 variables no longer signals bogus package lock violations. (reported
1229 * bug fix: declaring local loop variables to be of a range-limited type
1230 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1231 (reported by Andras Simon)
1232 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1233 bugs remain on x86-64.)
1234 * bug fix: the #= and ## reader macros now interact reasonably with
1235 funcallable instances.
1236 * bug fix: type-checks for function arguments were compiled using the
1237 compiler policy settings of the wrong lexical environment (in 1.0.2
1239 * bug fix: SHADOW accepts characters as string designators, as required
1240 by the spec (thanks to Eric Marsden)
1241 * bug fix: fixed GC safety issues when foreign functions are called with
1242 non-base strings as arguments
1243 * bug fix: more consistent error output for fatal-compiler-warnings, like
1245 * bug fix: functions with proper names were showing up as NIL in
1246 backtraces (reported by Edi Weitz, regression in 1.0.2)
1248 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1249 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1250 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1251 produce more efficient code on the x86 if the compiler can determine
1252 that (+ INDEX <constant>) does not require a bounds check and FOO
1253 has an element type at least 8 bits wide.
1254 * bug fix: references to undefined variables are handled the same way
1255 in toplevel forms as in the normal compiler
1256 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1258 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1259 (thanks to Jon Buller)
1260 * improvement: faster compilation times for complex functions
1261 * improvement: added readlink support to SB-POSIX (thanks to Richard
1264 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1265 * improvement: experimental support for mach exception handling on
1266 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1268 * improvement: support for GBK external format.
1269 (thanks to Chun Tian (binghe))
1270 * improvement: the debugger now displays variables that have been closed
1271 over, in code compiled with (DEBUG 2) or higher
1272 * improvement: support for executable cores on NetBSD (thanks to
1274 * new feature: added a RESTART-FRAME debugger command
1275 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1276 be used to provide an implementation for FILE-POSITION on Gray streams
1277 (thanks to Eric Marsden)
1278 * new feature: add syslog, openlog and closelog support to SB-POSIX
1279 (thanks to Richard Kreuter)
1280 * optimization: the function call overhead in code compiled with
1281 a high DEBUG optimization setting is significantly
1282 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1283 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1284 (thanks to Tony Martinez)
1285 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1286 evaluated once (reported by Kevin Reid)
1287 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1288 works again (thanks to Kilian Sprotte)
1289 * bug fix: an error is signaled for tagbodies with duplicate tags
1290 (thanks to Stephen Wilson)
1291 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1292 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1293 stack frames from alien callbacks.
1294 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1295 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1296 65k pages (thanks to David Woodhouse)
1297 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1299 changes in sbcl-1.0.1 relative to sbcl-1.0:
1300 * new platform: FreeBSD/x86-64, including support for threading.
1301 * new feature: the compiler stores cross-referencing information
1302 about function calls (who-calls), macroexpansion (who-macroexpands)
1303 and special variables (who-binds, who-sets, who-references) for code
1304 compiled with (< SPACE 3). This information is available through the
1305 sb-introspect contrib.
1306 * new feature: users may subclass SEQUENCE, and have instances of
1307 these classes interoperate with standard Common Lisp functions if
1308 a number of methods are defined. (This feature is experimental
1309 and the interface subject to change based on feedback from SBCL
1310 users and the general community)
1311 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1312 x86/x86-64, rather than the previous fixed depth of 8
1313 * improvement: another pthread back-end of mutex "pthread-futex".
1314 * bug fix: non-ascii command-line arguments are processed correctly
1315 (thanks to Yaroslav Kavenchuk)
1316 * bug fix: non-required arguments were not passed correctly when a method
1317 defined using DEFMETHOD was called from a mop-generated method using
1318 CALL-NEXT-METHOD (reported by Pascal Costanza)
1319 * bug fix: recursion is now permitted in accessors through
1320 SLOT-UNBOUND. (reported by Pascal Costanza)
1321 * bug fix: an error was signaled at startup if the HOME environment
1322 variable was defined, but had an empty value (reported by Peter Van Eynde)
1323 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1324 signal a PROGRAM-ERROR, not a BUG.
1325 * bug fix: SB-POSIX:READDIR works when built with large file support.
1326 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1328 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1329 for better automatic indentation support. (thanks to Matt Pillsbury)
1330 * optimization: loading generic functions no longer takes O(n^2) time,
1331 proportional to the amount of methods in the generic function
1332 (reported by Todd Sabin and Jeremy Brown)
1333 * optimization: the FIND and POSITION family of sequence functions
1334 are significantly faster on arrays whose element types have been
1336 * improvements to the Windows port:
1337 ** Intermittent heap corruption problems have been fixed. (thanks
1338 to Alastair Bridgewater)
1339 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1341 ** Lisp is able to unwind foreign exception frames from alien
1342 callbacks. (thanks to Alastair Bridgewater)
1344 changes in sbcl-1.0 relative to sbcl-0.9.18:
1345 * improvement: experimental support for threading on FreeBSD/x86.
1346 (thanks to NIIMI Satoshi)
1347 * improvement: runtime option --dynamic-space-size can be used
1348 to set the size of the dynamic space reserved on startup.
1349 * improvement: floating point modes in effect are now saved in
1350 core, and restored on startup.
1351 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1352 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1353 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1354 threads are not running after *SAVE-HOOKS* have run.
1355 * improvement: writes to CLOS instance slots are type-checked in code
1356 compiled with (SAFETY 3)
1357 * improvement: floating-point exception handling on FreeBSD (thanks to
1359 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1360 (thanks to Zach Beane)
1361 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1363 * improvement: added support for the Shift-JIS external format.
1364 (contributed by NIIMI Satoshi)
1365 * improvement: callbacks are supported on Linux/PPC. (thanks to
1367 * bug fix: compiler bug triggered by a (non-standard) VALUES
1368 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1369 * bug fix: file compiler no longer confuses validated and already
1370 dumped structurres. (reported by Kaersten Poeck)
1371 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1372 fill-pointer signals a type-error as required. (thanks to
1374 * bug fix: disassemly of funcallable instances works.
1375 * bug fix: single stepping on PPC.
1376 * bug fix: fix thread-safety problems in the type system (generally
1377 manifesting as nonsensical errors like "STRING is a bad type specifier
1378 for sequences" or "The value 1 is not of type FIXNUM")
1379 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1380 (reported by Josip Gracin)
1381 * bug fix: an error is signaled for attempts to displace arrays with
1382 incompatible element types (thanks to Mario Mommer)
1383 * bug fix: more correct handling of wide characters in debug info
1384 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1385 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1386 and don't cause extra consing
1387 * optimization: MAP and MAP-INTO are significantly faster on vectors
1388 whose elements types have been declared.
1389 * Improvements to SB-SPROF:
1390 ** Support for allocation profiling
1391 ** Reduced profiling overhead, especially for long profiling runs
1392 * Improvements to the Windows port:
1393 ** floating point exceptions are now reported correctly.
1394 ** stack exhaustion detection works partially.
1395 ** more accurate GET-INTERNAL-REAL-TIME.
1396 ** better RUN-PROGRAM behaviour in case of errors in the child
1398 ** PROBE-FILE now simplifies pathnames correctly.
1399 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1400 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1401 1st 1970 (although time timezone data will be unreliable).
1402 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1404 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1405 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1406 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1408 * bug fix: two potential GC deadlocks affecting threaded builds.
1409 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1410 returns T (reported by Anton Kazennikov)
1411 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1412 with non-variable places
1413 * bug fix: remove a race condition in the setting of
1414 funcallable-instance functions, this should make threaded CLOS
1415 code more stable against memory faults.
1416 * bug fix: corruption of specials when unbinding is interrupted by an
1417 asynchronous unwind (reported by Hannu Koivisto)
1418 * improvement: the debugger will now also display local variables that
1419 are only used once, for code compiled with a DEBUG optimization quality
1422 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1423 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1424 * incompatible change: External-format support for FFI calls. The
1425 SB-ALIEN:C-STRING no longer implies an ASCII
1426 external-format. Instead the string is subject to external-format
1427 conversion. Additionally return values of type SB-ALIEN:C-STRING
1428 are by default of type (SIMPLE-ARRAY CHARACTER), not
1429 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1430 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1431 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1432 * incompatible change: SB-EXT package no longer contains the
1433 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1434 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1436 * incompatible change: the single-stepper is no longer available
1437 on Alpha, Mips and Sparc platforms.
1438 * minor incompatible change: the direct superclasses of
1439 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1440 not (STANDARD-OBJECT FUNCTION). This makes the
1441 class-precedence-lists of GENERIC-FUNCTION and
1442 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1444 * minor incompatible change: the default stream external format on
1445 non-unicode SBCL is no longer detected from the locale, but is always
1447 * new feature: Add a version of evaluator that uses an interpreter instead
1448 of the compiler. EVAL still uses the compiler by default, to switch it
1449 to use the interpreter, set the value of the variable
1450 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1451 * minor incompatible change: the single-stepper REPL has been merged
1452 with the normal debugger (see the "Stepping" heading of the debugger help
1453 for more details). The debugger command STEP will no longer switch
1454 to the single-stepper REPL.
1455 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1456 for a type now works.
1457 * bug fix: loading of default sysinit file works. (thanks to Leonid
1459 * bug fix: better detection of circularities in the file-compiler.
1460 (reported by Marco Monteiro)
1461 * bug fix: the CL pathname functions now work with files that have
1462 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1463 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1464 systems with Unix98 pty semantics.
1465 * bug fix: ASDF-INSTALL will now work with bsd tar.
1466 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1468 * bug fix: timers expiring in dead threads no longer cause a
1469 type-error (reported by Paul "Nonny Mouse").
1470 * bug fix: thanks to more lightweight single-stepper instrumentation,
1471 code compiled with (DEBUG 3) will compile and execute significantly faster,
1472 and will have more accurate type-inferencing than before
1473 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1474 whose bindings are modified
1475 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1476 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1477 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1478 CL:SOFTWARE-VERSION with proper version
1480 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1481 * feature: implemented the READER-METHOD-CLASS and
1482 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1483 as specified by AMOP.
1484 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1486 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1487 (thanks to Lutz Euler)
1488 * optimization: hashing of general arrays and vectors has been
1489 improved. (reported by Any Fingerhut)
1490 * enhancement: SB-INTROSPECT is now able to find definitions of
1491 profiled functions. (thanks to Troels Henriksen)
1492 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1493 as well, allowing compiler-macros for SETF-functions to expand.
1494 * enhancement: step-instrumentation no longer wraps known
1495 single-value functions with multiple-value context, allowing
1496 better type inference.
1497 * fixed bug #337: use of MAKE-METHOD in method combination now works
1498 even in the presence of user-defined method classes. (reported by
1499 Bruno Haible and Pascal Costanza)
1500 * fixed bug #339(c): if there are applicable methods not part of any
1501 long-form method-combination group, call INVALID-METHOD-ERROR.
1502 (reported by Bruno Haible)
1503 * fixed bug #361: the :FUNCTION initarg in the protocol for
1504 initialization of methods can now be used to override
1505 internally-produced optimized functions. (reported by Bruno
1507 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1508 system-provided lambda expression no longer cause warnings about
1509 unbound #:|pv-table| symbols.
1510 * bug fix: improved the handling of type declarations and the
1511 detection of violations for keyword arguments with non-constant
1513 * bug fix: potentially erronous calls to PATHNAME and
1514 MERGE-PATHNAMES were being flushed in some cases.
1515 (reported by Richard Kreuter)
1516 * bug fix: compiled calls to TYPEP were mishandling obsolete
1517 instances. (reported by James Bielman and Attila Lendvai)
1518 * bug fix: format strings with ~> without matching ~< no longer
1519 trigger an AVER, but signal an understandable error instead.
1520 (reported by Antonio Martinez)
1521 * bug fix: specifying an output-file without a pathname-type for
1522 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1523 of input-file instead of "fasl". (reported by Robert Dodier)
1524 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1525 (reported by James Y Knight).
1526 * bug fix: compiler-macros-function did not consider the environment
1527 argument for shadowing by local functions.
1528 * bug fix: compiler-macros expansion was inhibited by local INLINE
1530 * bug fix: inline expansions of known functions were subject to
1531 step-instrumentation in high debug policies, leading to problems
1532 with type-inference.
1533 * bug fix: compiler failed to differentiate between different CONS
1534 types in some cases.
1535 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1536 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1537 * bug fix: #368: incorrect use of expressed vs. upgraded array
1539 * bug fix: #306a: more precise unions of array types.
1540 * thread-safety improvements:
1541 ** CONDITION-WAIT could return early on Linux, if the thread was
1542 interrupted and subsequently continued with SIGCONT.
1543 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1545 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1546 * added support for the ucs-2 external format. (contributed by Ivan
1548 * minor incompatible change: pretty printing of objects of type
1549 (cons symbol) is, in the default pprint-dispatch-table, now
1550 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1552 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1553 called later in a class's lifetime, possibly as late as when the
1554 first instance of the class is created. Previously,
1555 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1556 class became finalizeable.
1557 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1558 for multibyte external-format streams. (thanks to "vbzoli")
1559 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1560 with :ALLOCATION :CLASS inherited from superclasses of the
1562 * fixed bug: anonymous classes can now be created using the :NAME
1563 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1564 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1565 * fixed bug: core-files saved with :EXECUTABLE T can again be
1566 executed when SBCL_HOME isn't set. (reported by James Knight)
1567 * fixed bug: toplevel LOCALLY forms with declarations could
1568 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1569 * fixed bug: printing from several different threads using different
1570 values of *print-case* could cause invalid output, due to
1571 some internal special variables of the printer not being bound
1572 thread-locally (reported by Max Mikhanosha)
1573 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1574 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1575 (reported by Pascal Costanza)
1576 * fixed bug: FINALIZE-INHERITANCE is called from
1577 REINITIALIZE-INSTANCE on classes when the class has previously
1578 been finalized, as required by AMOP.
1579 * minor code generation optimizations:
1580 ** better register allocation in CLOS dispatching functions
1581 ** overflow detection when coercing signed bytes to fixnums on x86-64
1582 ** is now implemented with one IMUL instruction instead of three shifts
1583 ** more efficient bit-vector access on x86 and x86-64
1584 ** more efficient access to raw structure slots on x86 and x86-64
1585 * fixed some bugs revealed by Paul Dietz' test suite:
1586 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1587 return its argument.
1589 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1590 * feature: thread support on Solaris/x86, and experimental thread support
1592 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1594 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1595 default method for SLOT-UNBOUND.
1596 * minor incompatible change: prevent the user from specializing the
1597 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1598 somewhat counter to the intent of the protocol, I (CSR) think, and
1599 additionally it just doesn't work in SBCL as currently
1600 implemented, thanks to optimizations (that are always valid for
1601 the other three SLOT-VALUEish functions, but not for the setter).
1602 * minor incompatible change: the :SB-LDB feature is now enabled by
1603 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1604 the low-level debugger.
1605 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1606 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1607 down to an SB-SYS:FD-STREAM, allowing direct communication in
1608 more cases. Temporary files and pipes are still used as a fallback
1610 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1611 on the non-reentrant C functions localtime(3) and gmtime(3).
1612 * bug fix: global optimization policy was not visible in LOCALLY and
1614 * bug fix: class objects can be used as specializers in methods.
1615 (reported by Pascal Costanza)
1616 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1617 with a type error. (reported by blitz_ on #lisp)
1618 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1619 failed with a type error. (reported by Pascal Bourguignon)
1620 * bug fix: merging pathnames against defaults with :DIRECTORY
1621 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1622 (reported by James Y Knight)
1623 * bug fix: saving large (>2GB) cores on x86-64 now works
1624 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1625 constant index and a (simple-array (signed-byte 32)) array
1626 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1627 error (patch by Robert J. Macomber)
1628 * feature: TIME now displays the amount of run-time spent in GC
1629 * bug fix: The debugger now does a better job of respecting
1630 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1631 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1632 workaround for bug 403.)
1633 * bug fix: floating point exception handling now works on FreeBSD
1634 (thanks to NIIMI Satoshi)
1635 * fixed some bugs revealed by Paul Dietz' test suite:
1636 ** MISC.641: LET-conversion were not supposed to work in late
1638 * improvements to the Win32/x86 port:
1639 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1640 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1642 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1643 * new feature: source path information is generated for macro-expansion
1644 errors for use in IDE's like Slime (thanks to Helmut Eller)
1645 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1646 * bug fix: compiler does not loop forever on an invalid type in
1648 * improvement: compilation of most CLOS applications is significantly
1650 * optimization: added a limited bytecode compiler for simple toplevel
1651 forms, speeding up compilation and FASL loading
1652 * bug fix: the statistical profiler now properly distinguishes anonymous
1655 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1656 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1657 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1658 into subclasses of the finalized class. Now user calls to
1659 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1660 system return before any subclasses are finalized.
1661 * minor incompatible change: The reader no longer ignores errors
1662 regarding non-existent packages in #+ and #- feature tests.
1663 * new feature: command line options --no-sysinit, --no-userinit to
1664 inhibit loading the corresponding init files
1665 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1666 for sending data through UDP sockets (thanks to François-René Rideau)
1667 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1668 error is signalled instead (thanks to François-René Rideau)
1669 * minor incompatible change: Error signalling behaviour of lexical
1670 operations violating package locks has changed slightly. Refer to
1671 documentation on package locks for details.
1672 * enhancement: EVAL can process IF-expressions without resorting to the
1674 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1675 constant-folded properly due to missing out-of-line functions.
1676 (reported by Mika Pihlajamäki)
1677 * bug fix: LISTEN sometimes returned T even in cases where no data was
1678 immediately available from the stream
1679 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1680 were reversed. (reported by Levente Mészáros)
1681 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1682 when given a vector displaced to an adjustable array. (reported
1684 * bug fix: derivation of float boundaries from numbers outside the
1685 appropriate float range (reported by John Wiseman)
1686 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1688 * bug fix: precomputing cache entries for generic functions with
1689 some subclasses of specializers as yet invalid does not attempt to
1690 fill a cache line with a negative offset. (reported by Levente
1692 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1693 allow condition class objects as arguments to DOCUMENTATION and
1694 (SETF DOCUMENTATION); only find and set documentation for
1695 structure names for the STRUCTURE doc-type. (suggested by Gary
1697 * improvements to the Win32/x86 port:
1698 ** (user-homedir-pathname) and default initialization file
1699 locations now know about the user's "Documents and Settings"
1700 directory (thanks to Yaroslav Kavenchuk)
1701 ** run-program is implemented (thanks to Mike Thomas)
1702 ** sockets support (thanks to Timothy Ritchey)
1703 ** better backtrace support (thanks to Alastair Bridgewater)
1704 ** sb-grovel supported
1705 ** asdf-install and sb-posix work somewhat
1706 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1707 * improvements to the Solaris/x86 port:
1708 ** works on Solaris 11/Solaris Express
1709 ** floating-point exception handling support
1710 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1711 * fixed some bugs revealed by Paul Dietz' test suite:
1712 ** REMOVE-METHOD returns its generic function argument even when
1713 the method is not one of the generic functions' methods.
1714 ** objects declared as MEMBER types can be admissible arguments to
1715 structure accessors.
1716 ** printing characters should simply be printed by the FORMAT ~:C
1718 ** compiler failure when compiling functions with hairy constant
1719 defaults for optional parameters.
1720 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1721 function, which is already optimized.
1723 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1724 * new platform: experimental support for SBCL x86/Darwin, including
1725 MacOS X 10.4.5 on Intel.
1726 * new feature: Unicode character names are now known to the system
1727 (through CHAR-NAME and NAME-CHAR).
1728 * new feature: the filesystem location of SBCL's core file is
1729 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1730 * minor incompatible change: the contrib modules SB-POSIX and
1731 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1732 this change is to make it easier to distribute
1733 location-independent binaries.
1734 * bug fix: as implied by AMOP, standardized classes no longer have
1735 slots named by external symbols of public packages. (reported by
1737 * optimization: calling functions via constant symbols -- as in
1738 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1739 via the function object as in (FUNCALL #'FOO).
1740 * optimization: on x86 and x86-64, the calling convention for the
1741 case of dealing with an unknown number of values has been altered
1742 to be friendlier to the prediction heuristics implemented,
1743 particularly with reference to CALL and RET pairing. (thanks to
1744 Alastair Bridgewater)
1745 * optimization: on x86, the code for access to thread-local symbol
1746 values and binding/unbinding of thread-local symbols is smaller.
1747 (thanks to Alastair Bridgewater)
1748 * enhancement: CONSTANTP is now able to determine constantness of
1749 more complex forms, including calls to constant-foldable standardized
1750 functions and some special forms beyond QUOTE.
1751 * fixed bug: occasional GC crashes on Solaris/x86
1752 * optimization: x86-64 supports stack allocation of results of simple
1753 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1754 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1755 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1756 (thanks to James Knight)
1757 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1758 by the standard (thanks to Stephen Compall)
1760 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1761 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1762 be used for bundling the runtime and the core file into one
1763 executable binary. This feature is not currently supported on all SBCL
1764 platforms. (thanks to James Bielman and NIIMI Satoshi)
1765 * new feature: a generational or ephemeral garbage collector is now
1766 the default on the PowerPC platform (both Linux and Darwin). The
1767 old Cheney (stop and copy) collector is a build-time option.
1768 (thanks to Cyrus Harmon, after Raymond Toy)
1769 * minor incompatible change: the method by which SBCL finds its
1770 contributed modules has changed; it no longer relies on symbolic
1771 links from an $SBCL_HOME/systems directory, but searches directly
1772 in the subdirectories of $SBCL_HOME.
1773 * enhancement: the dynamic heap size on the Linux/PPC platform is
1774 markedly larger, even using the older Cheney garbage collector.
1775 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1776 certain complicated string types. (reported by Gary King)
1777 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1778 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1779 * fixed bug: DOCUMENTATION on structures no longer signals an
1780 error if no structure type of the right name exists. (reported by
1782 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1783 applicable non-standard primary or :AROUND method on
1784 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1785 no longer cause unbound variable errors. (reported by Kevin Reid)
1786 * fixed bug: metacircle resolution in cases where methods have slots
1787 added before the slots from STANDARD-METHOD. (reported by Jean
1789 * fixed bug: the Power PC assembly code for calling into lisp
1790 sometimes computed its return address wrongly (depending on the
1791 15th bit of the address, fixed at link time). This used to
1792 manifest itself in a segmentation violation while building PCL.
1793 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1794 many others over the years)
1795 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1796 the stack pointer (treated as a signed integer) is negative.
1797 (thanks to Peter van Eynde)
1799 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1800 * new platform: experimental support for the Windows operating
1801 system has been added. (thanks to Alastair Bridgewater)
1802 * fixed several bugs in and robustified the PPC FFI (including
1803 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1804 * bug fix: allow non-simple string symbol names (reported by Paul
1806 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1808 * bug fix: saving a core corrupted callbacks on x86/x86-64
1809 * bug fix: closed a loophole in metacircularity detection and
1810 grounding in the PCL implementation of CLOS.
1811 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1812 (reported by tomppa on #lisp)
1813 * bug fix: clear the direction flag on Lisp -> C transitions, as
1814 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1815 (reported by Andrej Grozin and Hendrik Maryns)
1816 * optimization: major improvements to GC efficiency on GENCGC platforms
1817 * optimization: faster implementation of EQUAL
1818 * optimization: emit more efficient opcodes for some common
1819 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1820 * optimization: several other minor code-generation improvements on x86-64
1821 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1823 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1824 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1825 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1826 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1827 by ANSI as a generic function, and for consistency (SETF
1828 GENERIC-FUNCTION-NAME) is treated likewise.
1829 * fixed bug #233.b: make constraint propagation notice when a variable
1830 value is changed after it is referenced but before it is used
1831 * fixed bug #296: no more arbitrary behaviour from filenames with
1832 odd characters as --load arguments. (reported by Adam Warner)
1833 * fixed bug #390: :CHARACTER-SET pathname components now work as
1834 expected. (reported by Tim Daly Jr)
1835 * fixed bug #391: complicated :TYPE intersections in slot
1836 definitions no longer cause an error in PCL internals.
1837 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1838 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1839 returning the number of octets which would be written to the
1840 file-stream. (thanks to Robert J. Macomber)
1841 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1842 arguments to the internal stream functions. (thanks to David
1844 * bug fix: stack exhaustion is now handled on the x86/SunOS
1845 platform. (thanks to Daisuke Homma)
1846 * bug fix: more accurate ROOM results on GENCGC platforms
1847 * optimization: improved type inference for arithmetic-for
1848 index variables in LOOP
1849 * optimization: faster floating-point SQRT on x86-64
1850 * fixed some bugs revealed by Paul Dietz' test suite:
1851 ** DOCUMENTATION returns NIL instead of "" for method combinations
1852 that don't have a docstring
1854 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1855 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1856 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1857 therefore are not customizeable by user code (as seems to be at
1858 least permitted and maybe required by AMOP). As a consolation,
1859 however, the SBCL implementation of these functions now calls
1860 REINITIALIZE-INSTANCE as specified by AMOP.
1861 * bug fix: slot-definition documentation is propagated as per ANSI
1862 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1863 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1864 argument, as do eslotd initialization methods. (from Pascal
1865 Costanza's "Closer" project)
1866 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1867 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1869 * bug fix: it is now possible to have more than one subclass of
1870 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1871 (reported by Bruno Haible, Pascal Costanza and others)
1872 * bug fix: the dependent update protocol now works for generic
1873 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1874 and Pascal Costanza)
1875 * bug fix: condition-class instances corresponding to
1876 DEFINE-CONDITION forms are now created eagerly. (reported by
1877 Kalle Olavi Niemitalo on comp.lang.lisp)
1878 * bug fix: floating point printing is more accurate in some
1879 circumstances. (thanks to Simon Alexander)
1880 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1881 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1882 * bug fix: callbacks on OS X now preserve stack-alignment.
1883 (thanks to Cyrus Harmon)
1884 * enhancement: the x86-64 disassembler is much better at
1885 disassembling SSE instructions. (thanks to Lutz Euler)
1886 * enhancement: CHECK-TYPE on a variable now allows type-inference
1887 (thanks to Vincent Arkesteijn)
1888 * optimization: improved performance of EUC-JP external format.
1889 (thanks to NIIMI Satoshi)
1890 * optimization: performance improvements to IO on file streams of
1891 :ELEMENT-TYPE CHARACTER
1892 * optimization: much faster memory allocation on x86-64
1893 * optimization: faster garbage collections (latency and throughput)
1895 * optimization: faster bignum subtraction and division on x86 and x86-64
1896 (thanks to Lutz Euler)
1897 * optimization: more accurate type-inference for loops that use a
1898 floating point index variable or a negative step.
1900 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1901 * bug fix: add a workaround to SBCL looping infinitely at startup on
1902 Linux kernels with apparently buggy implementations of personality().
1903 (thanks to Svein Ove Aas)
1904 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1905 (thanks to David Lichteblau)
1906 * bug fix: local bindings shadow global symbol macros for
1907 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1908 * optimization: non-open coded uses of numeric comparison operators
1909 (e.g. >) no longer cons when called with more than one parameter
1910 on platforms supporting dynamic-extent allocation.
1911 * enhancement: saving cores with foreign code loaded is now supported
1912 on MIPS/Linux in addition to the previously supported platforms.
1913 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1914 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1915 * bug fix: division by zero in sb-sprof when no samples were collected
1916 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1917 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1918 (thanks to Alexander Kjeldaas)
1919 * new feature: ignoring the return values of destructive functions
1920 like NREVERSE signals a compile-time style-warning.
1921 (thanks to Kevin Reid)
1922 * new feature: the alignment of alien structure fields can be
1923 explicitly specified. (thanks to Cyrus Harmon)
1924 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1925 and dump core on SIGQUIT
1927 ** incompatible change: threads do not inherit values of specials
1928 from their parents (see manual)
1929 ** bug fix: threads stacks belonging to dead threads are freed by the
1930 next exiting thread, no need to gc to collect thread stacks anymore
1931 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1932 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1933 ** bug fix: dynamic variable and thread start related gc lossage
1934 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1936 * fixed some bugs revealed by Paul Dietz' test suite:
1937 ** SUBTYPEP is slightly more accurate on heinously complicated
1938 CONS types where some of the members have uncertain (in the
1939 NIL, NIL sense) type relationships to each other.
1941 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1942 no longer purified unless :PURIFY T is explicitly specified.
1943 ** Non-purified cores are significantly smaller than before
1945 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1946 * new feature: timers based on Zach Beane's excellent timer package
1947 * added support for the following external formats: koi8-u,
1948 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1949 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1950 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1951 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1952 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1953 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1954 * incompatible change: a threaded SBCL will no longer revert to
1955 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1956 * bug fix: interrupts are disabled until startup is complete; no
1957 more sigsegvs when receiving a signal to soon
1958 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1960 * bug fix: add a workaround for the memory randomization features in
1961 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1962 workaround will only be in effect on systems with the proc filesystem
1964 * bug fix: printing objects of type HASH-TABLE signals a
1965 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1967 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1968 have been running for over 50 days. (reported by Gilbert Baumann)
1969 * bug fix: the logic for getting names of functions gets less
1970 confused when confronded with alternate-metaclass
1971 funcallable-instances. (reported by Cyrus Harmon)
1972 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1973 consistent, even on internal alternate-metaclass objects.
1974 * bug fix: flush closure information collected by physical
1975 environment analysis prepass before the main pass. (bug reported
1977 * bug fix: compiler pack phase does not modify a hashtable, which is
1978 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1979 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1980 may be expanded. (reported by Alexander <malishev> on c.l.l)
1981 * bug fix: no more style-warnings when compiling code using LAST
1982 under high-SPEED low-SPACE settings. (reported by David Wallin
1984 * fixed some incompatibilities between SBCL's MOP and the MOP
1986 ** the METAOBJECT class is now implemented;
1987 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1988 STANDARD-OBJECT, as required;
1989 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1990 now compatible (as required by VALIDATE-SUPERCLASS); there
1991 remains a consistency requirement over the presence or absence
1992 of the FUNCTION class in the superclass list of finalized
1993 classes; see the manual for more details;
1994 ** the :AROUND method for COMPUTE-SLOTS on
1995 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1996 requested slot ordering.
1998 ** bug fix: parent thread now can be gc'ed even with a live
2000 ** bug fix: binding a special with PROGV to no value is not
2001 the same as that symbol not having been bound (thanks to
2003 ** bug fix: binding specials is thread safe (thanks to
2005 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
2006 and SB-SPROF do not die with 'no handler for signal XX in
2007 interrupt_handle_now(..)' anymore
2008 ** bug fix: WITH-TIMEOUT works with multiple running threads
2009 * fixed some bugs revealed by Paul Dietz' test suite:
2010 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2011 the :method-class keyword argument.
2013 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2014 * new port: the Solaris operating system on x86 processors is now
2015 mostly supported, though some rough edges in the environment
2016 remain. (thanks to Daisuke Homma)
2017 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2018 space for its heap. (thanks to Thiemo Seufer)
2019 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2020 closures. (thanks to Thiemo Seufer)
2021 * minor incompatible change: eof selects abort in the debugger.
2022 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2023 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2025 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2026 deprecated, and will go away in a future revision of SBCL.
2027 * minor incompatible change: GC-ON and GC-OFF are no longer
2028 implemented with a counter, it does not matter how many times gc
2029 is switched on or off
2030 * bug fix: discriminating functions for generic function classes
2031 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2032 make invalid assumptions about method precedence order. (reported
2034 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2035 platforms. (thanks to Thiemo Seufer)
2036 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2037 * bug fix: correct pathname printing with printer escaping is on.
2038 (thanks to Kevin Reid)
2039 * bug fix: complex VOP definitions in "user-space" no longer trigger
2040 package locks. (reported by Zach Beane)
2041 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2042 for funcallable-instance functions, and is no different from
2044 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2045 characters in the current readtable. (reported by Nicholas Neuss)
2046 * bug fix: SUBTYPEP on various CONS types returns more a more
2047 accurate acknowledgment of its certainty.
2048 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2049 lists in some cases. This partially fixes bug 384.
2050 * flush all standard streams before prompting in the REPL and the
2052 * bug fix: signal handling and triggering gc do not conflict
2053 directly anymore, in particular a high frequency sb-sprof does
2054 not prevent gc from running
2055 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2056 approximation for timezone and DST information between the
2057 universal time epoch and the smallest negative 32-bit time_t.
2058 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2059 year 1899 so long as the encoded time is non-negative.
2060 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2061 the correct answer for non-constant rotate amounts when performing
2062 an inline 32-bit rotation.
2064 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2065 there is only one thread in the session
2066 ** bug fix: memory leak for streams created in one thread and
2067 written to in another
2068 ** bug fix: lockup when compiled with gcc4
2069 ** bug fix: race that allows the gc to be triggered when gc is
2071 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2072 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2074 ** bug fix: finished threads are gc'ed properly
2075 * fixed some bugs revealed by Paul Dietz' test suite:
2076 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2077 has arguments with a different set of applicable methods from
2078 the orignal arguments.
2079 ** The type error thrown by MAP now has a correct expected-type
2081 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2082 name a compiled function.
2083 ** Three MISC tests where a large bignum was improperly coerced to
2084 a float that couldn't represent that bignum during type
2085 derivation were fixed.
2086 ** SUBTYPEP can now handle types involving the negation of a
2087 list-form FUNCTION type.
2088 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2089 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2090 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2092 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2093 * New feature: Experimental support for bivalent streams: streams
2094 opened with :element-type :default now allow character and binary
2095 (unsigned-byte 8) I/O
2096 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2097 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2099 * bug fix: no more highly sporadic "couldn't check whether ~S is
2100 readable" when reading a stream and an interrupt hits in the middle
2101 of a select system call
2102 * compiler better recognizes complex arrays (reported by Eduardo
2104 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2105 for variables on SBCL built with linkage-tables. (reported by Luis
2107 * various error reporting improvements.
2108 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2109 (Thanks to Thiemo Seufer)
2110 * bug fix: nested reader invokations work correctly
2111 * bug fix: it is possible to have simultaneous references to foreign
2112 code and foreign data with the same name.
2114 ** added x86-64 support
2115 ** incompatible change: the threading api now works with thread
2116 objects instead of thread ids
2117 ** bug fix: threads are protected from signals and interruption when
2118 starting up or going down
2119 ** bug fix: a race where an exiting thread could lose its stack to gc
2120 ** bug fix: don't halt on infinite error in threads if possible
2121 ** fixed numerous gc deadlocks introduced in the pthread merge
2122 ** bug fix: fixed thread safety issues in read and print
2123 ** bug fix: debugger doesn't hang on session lock if interrupted at
2124 an inappropriate moment
2125 ** bug fix: run-program is now thread safe(r)
2126 ** bug fix: inner with-recursive-lock no longer releases the mutex
2127 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2128 * fixed some bugs revealed by Paul Dietz' test suite:
2129 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2130 EXPECTED-TYPE slots filled.
2131 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2133 ** MAKE-CONDITION accepts classes as type-designators.
2134 ** COMPILE may never return NIL.
2135 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2136 range before calling Unix time functions
2138 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2139 * numerous signal handling fixes to increase stability
2140 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2141 * minor incompatible change: we now correctly canonize default
2142 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2143 as per the MOP, rather than the historical (INITARG INITFUNCTION
2144 INITFORM). (reported by Bruno Haible)
2145 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2146 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2147 for more information.
2148 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2149 pathname is a directory pathname.
2150 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2151 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2153 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2154 :METACLASS argument in addition to a class name. (reported by
2155 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2156 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2157 (reported by Bruno Haible; patch from Gerd Moellmann)
2158 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2160 * bug fix: more cleanups to the floating point exception handling on
2161 x86-64 (thanks to James Knight)
2162 * bug fix: the compiler does not try to constant fold calls of
2163 COERCE and BIT-* functions when they return freshly constructed
2164 objects. (reported by Nikodemus Siivola and Paul Dietz)
2165 * optimization: improved the MIPS versions of generic (in the
2166 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2167 * optimization: direct conversion of (unsigned-byte 32) to floats on
2168 the PowerPC platform.
2169 * optimization: structure instances with raw slots now use less
2170 memory, and probably show better memory locality. (thanks to
2172 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2173 are treated as requests for stack allocation on the x86-64,
2174 Alpha-32, PPC and SPARC platforms.
2175 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2176 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2177 (thanks to Tony Martinez)
2179 ** gcing a dead thread can no longer lead to lockups
2180 ** threads block signals until they are set up properly
2181 ** errno is no longer shared by threads
2182 ** interrupt-thread restores the eflags register on x86
2183 ** fixed some lockups due to gc/thread interaction
2184 * fixed some bugs revealed by Paul Dietz' test suite:
2185 ** invalid dotted lists no longer raise a read error when
2186 *READ-SUPPRESS* is T
2187 ** signal an error if a symbol that names a declaration is used
2188 as the name of a type, or vice versa
2189 ** allow using the (declare (typespec var*)) abbreviation for
2190 (declare (type typespec var*)) with all type specifiers
2191 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2192 ** always return NIL from PPRINT-POP when OBJECT is NIL
2193 ** don't signal errors when pretty-printing malformed LABELS,
2194 FLET or MACROLET forms
2195 ** declarations in a DOLIST body are also in scope for the
2197 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2199 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2202 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2203 * fixed cross-compiler leakages that prevented building a 32-bit
2204 target with a 64-bit host compiler.
2205 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2206 opened with :IF-EXISTS :OVERWRITE.
2207 * fixed bug 281: error for an invalid qualifier in a short-form method
2208 combination method is not signalled until the faulty method is called.
2209 * bug fix: iteration variable type inferrer failed to deal with open
2210 intervals. (reported by Alan Shields)
2211 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2212 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2213 or more runtime options were provided to the sbcl binary.
2214 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2215 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2216 * optimization: there's now a fast-path for fixnum arguments in the
2217 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2218 * optimization: the code generated on x86-64 is more compact thanks
2219 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2220 * bug fix: floating-point exception handling now partly works on
2221 x86-64. (Thanks to James Knight)
2222 * improvement to the MIPS backend from Thiemo Seufer: C-style
2223 64-bit long long arguments and return values to alien functions
2225 * fixed some bugs revealed by Paul Dietz' test suite:
2226 ** the type-error signalled from WARN has a filled-in DATUM slot.
2227 ** the type-error required when a stream is not associated with
2228 a file has the stream as its datum.
2229 ** type-errors on single-floats on x86-64 no longer have
2230 :INVALID-OBJECT as the datum
2231 ** the type-errors signalled for invalid function names now have
2232 a correct expected type
2233 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2234 for structures defined with a :TYPE. Documentation strings for
2235 typed structures are no longer immediately discarded
2236 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2237 broadcast streams and synonym streams. FILE-LENGTH now also works
2238 on broadcast streams.
2240 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2241 * incompatible change: the --noprogrammer option, deprecated since
2242 version 0.7.5, has been removed. Please use the equivalent
2243 --disable-debugger option instead.
2244 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2246 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2247 inoperational for a while now) has been completely removed.
2248 * null lexical environments are now printed as #<NULL-LEXENV>,
2249 significantly reducing the amount of clutter in typical backtraces.
2250 * documentation on weak pointers, finalization, and after GC hooks
2251 has been added to the manual.
2252 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2253 as other specialized array types, is much faster. SUBSEQ and
2254 COPY-SEQ on such arrays have also been sped up.
2255 * optimization: EQL is now more efficient when at least other argument
2256 is known to be of type (OR FIXNUM (NOT NUMBER)).
2257 * fixed bug: the runtime is now less vulnerable to changes in the
2258 size of the SBCL object on OS X, and virtual memory is reserved for
2259 all spaces that need to be at a fixed address.
2260 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2261 * fixed bug: finalizers and after GC hooks that cause consing are now
2263 * fixed bug: compiler error messages and summaries are now printed to
2264 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2265 * fixed inference of the upper bound of an iteration variable.
2266 (reported by Rajat Datta).
2267 * fixed bug 211e: calling local functions with duplicated constant
2268 keyword argument no longer causes a bogus style warning about an
2270 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2271 ftype declaration to be disregarded. (reported by Dave Roberts)
2272 * fixed bug 373: caused by erronous compilation of references to alien
2273 variables in the runtime on ppc/darwin.
2274 * fixed bug 376: CONJUGATE type deriver.
2275 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2276 (reported by Baughn on #lisp)
2277 * a cross-compiler bug on non-x86 platforms has been identified and
2278 fixed. (thanks to Bruno Haible)
2279 * improvements to the MIPS runtime code for increased stability.
2280 (thanks to Thiemo Seufer)
2281 * increased the maximimum compact environment size to allow
2282 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2283 * partial workaround for bug 135: don't name the function we're
2284 calling for hairy cases of EVAL, so as not to accumulate one environment
2285 entry per call to EVAL. (reported by Kevin Reid)
2286 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2287 * optimization: type testing for non-vector arrays should be faster.
2288 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2290 * bug fix: setting 31st element of a bit vector to zero did not work
2292 * bug fix: redefining a class definition which failed due to a
2293 previous accessor / function clash now works (but see BUGS entry
2294 #380 for more problems in this area). (thanks to Zach Beane)
2295 * the long form of DEFINE-METHOD-COMBINATION disables method group
2296 checking when given a single method group with pattern *. (thanks
2298 * on x86 compiler supports stack allocation of results of simple
2299 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2300 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2301 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2302 * fixed some bugs related to Unicode integration:
2303 ** the restarts for recovering from input and output encoding
2304 errors only appear when there is in fact such an error to
2306 * fixed some bugs revealed by Paul Dietz' test suite:
2307 ** MISC.549 and similar: late transformation of unsafe type
2308 assertions into derived types caused unexpected code
2310 ** SCALE-FLOAT type deriver is less wrong.
2311 ** type derivers for EXP, LOG and similar functions compute result
2312 types for complex arguments better.
2313 ** (MISC.563) CONJUGATE type deriver works for very restricted
2315 ** out-of-line type testers for character strings are available.
2316 ** EQUAL compiler transform understands specialness of objects
2318 ** accessing double-floats stored on the stack now works on x86-64.
2319 ** debugger internals could sometimes create invalid lispobjs,
2320 resulting in GC crashes.
2321 ** MISC.548: type check weakening can convert required type into
2323 ** initialization forms for bindings are not in scope of free special
2326 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2327 * incompatible change: thread support for non-NPTL systems has
2328 been removed - locking is buggy and unreliable. A threaded
2329 SBCL build will now warn at startup and refuse to create
2330 new threads, unless futex support is detected in the kernel
2331 * incompatible change: the top level REPL now has only an ABORT
2332 restart associated with it, not TOPLEVEL and ABORT as it used to.
2333 TOP and TOPLEVEL are now available as debugger commands for
2334 returning to the top level.
2335 * incompatible change: forms evaluated in the REPL now use the
2336 global optimization policy.
2337 * incompatible change: user- and system-initialization files are
2338 no longer processed with LOAD, but by READ and EVAL; hence the
2339 global optimization policy, startup package, readtable, etc,
2341 * The .fasl file format number has been incremented because of
2342 various incompatible changes.
2343 * internal entry point details and argument counts no longer appear
2344 in backtraces unless explicitly requested by setting
2345 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2346 * built-in and standard functions no longer have names like "top
2347 level local call to FOO".
2348 * fixed bug 32: functions defined in non-null lexical environments
2349 now have more legible printed representation
2350 * fixed bug 33: functions defined in non-null lexical environemnts
2351 are now more amenable to inspection by INSPECT.
2352 * workaround for bug 354: XEPs no longer appear in backtraces unless
2353 explicitly requested.
2354 * fixed bug: receiving the signal which results from attempting to
2355 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2356 SIGBUS on other *BSDs) on architectures where the C stack is also
2357 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2358 to debugger confusion or wild instability. (reported by Cheuksan
2360 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2361 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2362 (reported by Lutz Euler)
2363 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2364 compiled code. (reported by Paul Dietz)
2365 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2366 specialized parameter to a method to something that is not TYPEP
2367 the specializer is now possible.
2368 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2369 face of package deletion.
2370 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2371 pathname. (reported by David Tolpin on c.l.l)
2372 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2373 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2374 STRING-STREAM and FILE-STREAM, respectively.
2375 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2376 than previously; in addition, its test suite is now run on build.
2377 (thanks to Luke Gorrie)
2378 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2379 * optimization: added a immediate representation for single-floats
2381 * fixed some bugs revealed by Paul Dietz' test suite:
2382 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2383 ** attempting to create a package with a colliding nickname causes
2384 correctable errors to be signalled.
2385 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2386 ** several x86-64 backend bugs related to sign-extension of immediate
2389 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2390 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2391 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2393 * fixed loading of multiply forward-referenced layouts.
2394 (thanks to Cheuksan Wang)
2395 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2396 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2397 (see COMPILE-FILE documentation for details of :PRINT option)
2398 * fixed bugs 19 and 317: fixed-format floating point printing is
2399 more accurate. This also fixes a bug reported by Adam Warner
2400 related to the ~@F format directive.
2401 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2403 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2404 dispatch table if the from-char is a dispatch macro character.
2405 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2406 by the wordsize no longer ignore the last word. (reported by Lutz
2408 * fixed bug in type checking of dynamic-extent variables. (reported
2410 * optimization: sequence traversal functions use their freedom to
2411 coerce function designators to functions.
2412 * optimization: code with many calls to CLOS methods specialized on
2413 CLOS classes has had redundant type checks removed.
2414 * optimization: added declarations to speed up operations that access
2415 the internal character database (for example STRING-UPCASE)
2416 * optimization: comparison operations between floats and sufficiently small
2417 fixnums no longer create extra rationals
2418 * fixed some bugs related to Unicode integration:
2419 ** portions of multibyte characters at the end of buffers for
2420 character-based file input are correctly transferred to the
2421 start of the buffer at the next read.
2422 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2423 passing it through to OPEN.
2424 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2425 argument given to internal calls to OPEN.
2426 ** the built-in comment readers (introduced by character sequences
2427 ";" and "#|") are more forgiving to encoding errors; they will
2428 STYLE-WARN and then attempt to resync the stream at a character
2429 boundary. (thanks to Teemu Kalvas)
2430 * fixed some bugs in the x86-64 port:
2431 ** Negative short int return values from c-calls are sign-extended
2433 ** The stack is aligned to 16-bytes for c-calls, as required by
2434 the ABI. (thanks to Cheuksan Wang)
2435 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2436 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2437 for enums. (thanks to Vincent Arkesteijn)
2438 ** Multiple small optimizations and bugfixes for floating point
2440 * fixed some bugs revealed by Paul Dietz' test suite:
2441 ** Space, Tab, Linefeed, Return and Page have the invalid
2442 secondary constituent character trait.
2443 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2445 ** WITH-INPUT-FROM-STRING should only update the index place on
2447 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2448 works more reliably.
2449 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2450 with one-dimensional arrays with fill pointers.
2451 ** TYPE-OF failed on a complex with an integer realpart and a
2453 ** compiler failure during type inference for the code of form
2454 (IF (EQL X (THE ...)) ...) (MISC.535).
2456 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2457 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2458 platform. The port supports 61-bit fixnums, large memory spaces
2459 and reloading shared object files.
2460 * enhancement: saving cores with foreign code loaded is now
2461 supported on ppc/Darwin in addition to the previously supported
2463 * enhancement: the statistical profiler now walks deeper into the
2464 call stack for more meaningful call-graphs and accrued time
2465 reports (x86/x86-64 only). It also now reports time spent in
2467 * enhancement: it is now possible to trace most individual methods
2468 of a generic function in addition to tracing the generic function
2470 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2472 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2473 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2474 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2475 produces an error. (thanks to Vincent Arkesteijn)
2476 * bug fix: NAMESTRING on pathnames with :WILD components in their
2477 directories works correctly. (thanks to Artem V. Andreev)
2478 * fixed bug 125: compiler preserves identity of closures. (reported
2480 * bug fixed: functions with &REST arguments sometimes failed with
2481 "Undefined function" when compiled with (DEBUG 3). (reported by
2483 * bug fix: overflow during compiling of setting element of a bit
2484 vector with constant index and value. (reported by Timmy Douglas)
2485 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2486 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2487 * on x86 compiler partially supports stack allocation of dynamic-extent
2489 * GO and RETURN-FROM do not check the extent of their exit points
2490 when compiled with SAFETY 0.
2491 * fixed some bugs related to Unicode integration:
2492 ** encoding and decoding errors are now much more robustly
2493 handled; it should now be possible to recover even from invalid
2494 input or output to the terminal. (thanks to Teemu Kalvas)
2495 ** provided a first cut at implementing STRING-TO-OCTETS and
2496 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2497 ** altered the SB-MD5 contributed module slightly, changing the
2498 interface just enough for it to be supportable for builds where
2499 lisp characters are not eight bits.
2500 * fixed some bugs revealed by Paul Dietz' test suite:
2501 ** the FORMATTER-generated functions for ~V[ conditionals require
2502 the correct number of arguments.
2503 ** READ-FROM-STRING returns the mandated second value when applied
2504 to displaced strings.
2505 ** the #\Rubout and #\Backspace characters are treated as invalid
2506 constituent characters by the tokenizer.
2508 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2509 * new feature: reloading changed shared object files with
2510 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2511 * new feature: references to foreign variables and functions
2512 can now be compiled and loaded before the corresponding shared
2513 object file is loaded, as long as the foreign definitions are
2514 available at runtime.
2515 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2516 supported. (thanks to Dan Debertin)
2517 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2518 just keywords. (thanks to Vincent Arkesteijn)
2519 * fixed bug #331: structure-class instances corresponding to
2520 DEFSTRUCT forms are now created eagerly.
2521 * fixed bug #345: backtraces from calls to undefined functions work
2522 on x86 as well. Related bug #61 is now also partially fixed on x86
2523 (backtraces from throws to unknown catch tags.)
2524 * bug fix: lambda-list parsing is now stricter vrt. order and number
2525 of lambda-list keywords.
2526 * bug fix: as specified by AMOP, an error is signalled if a
2527 class-option appears multiple times in a DEFCLASS form. (reported
2529 * bug fix: RANDOM can be compiled when the compiler derives the type
2530 of its numeric argument as a disjoint set of small integers.
2531 (reported by Paul Dietz)
2532 * bug fix: starting a core saved with shared objects loaded when
2533 those objects are not available no longer causes threaded SBCL to
2534 hang. (reported by Sean Ross)
2535 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2537 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2538 argument, which must always be NIL. (reported by Kalle Niemitalo)
2539 * bug fix: printing 1.0d+23 no longer results in an error.
2540 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2541 * bug fix: structure slot setters preserve evaluation order. (thanks
2543 * fixed some bugs related to Unicode integration:
2544 ** RUN-PROGRAM can allow its child to take input from a Lisp
2545 stream. (reported by Stefan Scholl)
2546 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2547 locales. (reported by Ken Causey)
2548 * fixed some bugs revealed by Paul Dietz' test suite:
2549 ** INCF, DECF and REMF evaluate their place form as specified in
2551 ** FORMATTER expands ~{ ~} iteration directives with V or #
2552 parameters correctly.
2553 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2554 consequent uses no arguments correctly.
2555 ** the system has a partial understanding of the (COMPLEX RATIO)
2557 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2560 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2561 * new feature: a build-time option (controlled by the :SB-UNICODE
2562 keyword feature, enabled by default) for building the system with
2563 support for the entire 21-bit character space defined by the
2565 * new feature: the system now has rudimentary external-format
2566 support; the primary user-visible change at this time is that
2567 characters with the high bit set (such as lower-case-e-acute) will
2568 print correctly to a terminal in a UTF-8 environment.
2569 * minor incompatible change: BASE-CHAR no longer names a class;
2570 however, CHARACTER continues to do so, as required by ANSI.
2571 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2572 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2573 has been moved to the SB-EXT package (temporarily re-exported from
2575 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2576 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2578 * fixed bug #351: better error-handlind and reporting for malformed
2580 * fixed bug #350: bignum-printing is now more memory-efficient,
2581 allowing printing of very large bignums, eg. (expt 2 10000000).
2582 (reported by Bruno Haible)
2583 * fixed bug #302: better primitive-type selection for intersection
2585 * fixed bug #308: non-graphic characters now all have names, as
2586 required. (reported by Bruno Haible)
2587 * bug fix: redefining a class with different superclasses now correctly
2588 removes it from the direct-subclasses of its previous superclasses.
2589 (reported by David Morse)
2590 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2591 new value now works. (reported by Bruno Haible)
2592 * bug fix: correct canonicalization of multiple non-standard slot
2593 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2594 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2595 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2596 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2597 now exists, an signals an error.
2598 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2599 during macroexpansion for non-iteration variables as well. (reported
2600 by Bruno Haible for CMUCL)
2601 * bug fix: Cyclic structures and unprintable objects in compiler
2602 messages no longer cause errors. (reported by Bruno Haible)
2603 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2604 and READ-FROM-STRING all now return a primary value of NIL if
2605 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2606 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2607 (reported by Bruno Haible for CMUCL)
2608 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2609 do not designate a condition. (reported by Bruno Haible for
2611 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2612 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2613 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2614 permitting resolution in favour of any of the conflicting symbols.
2615 (reported by Bruno Haible for CMUCL)
2616 * bug fix: EQUAL compiler optimizations is less aggressive on
2617 strings which can potentially compare true despite having distinct
2618 specialized array element types.
2619 * bug fix: unit enumerations can be defined without dividing by
2620 zero. (thanks to Vincent Arkesteijn)
2621 * FORMAT compile-time argument count checking has been enhanced.
2622 (report from Bruno Haible for CMUCL)
2623 * a partial workaround for the bug 262: the compiler does not try to
2624 inline-expand a local function doing RETURN-FROM from a deleted
2625 BLOCK. (thanks to Peter Denno for the bug report and to David
2626 Wragg for the simple test case)
2627 * fixed some bugs revealed by Paul Dietz' test suite:
2628 ** RENAME-PACKAGE allows all package designators as new package
2630 ** constraint propagation and lambda variable substitution are
2631 more cautious in dealing with partially deleted code.
2632 ** compiler sometimes lost reoptimization passes.
2633 ** CERROR, given a condition as condition designator, passes its
2634 remaining arguments to the continue format control without
2636 ** Case-altering FORMAT directives work correctly on non-ASCII
2638 ** The REAL type specifier handles bounds outside the floating
2639 point ranges without signalling FLOATING-POINT-OVERFLOW.
2640 ** Functions with IR1-transformations can create intercomponent
2641 references to global functions.
2642 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2644 ** FORMAT ~R treats a nil value for its first parameter correctly.
2646 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2647 * enhancement: saving cores with foreign code loaded is now
2648 supported on x86/NetBSD and sparc/Linux in addition to the previously
2649 supported platforms.
2650 * bug fix: on some platforms repeated installations caused multiple
2651 copies of HTML documentation to be installed -- should not happen
2652 any more. (reported by Stefan Scholl)
2653 * bug fix: parsing self-recursive alien record types multiple times
2654 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2655 original patch by Helmut Eller for CMUCL)
2656 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2657 (thanks to Richard Kreuter)
2658 * bug fix: defining classes whose accessors are methods on existing
2659 generic functions in other (locked) packages no longer signals
2660 bogus package lock violations. (reported by François-René Rideau)
2661 * bug fix: special variables as DEFMETHOD parameters no longer have
2662 associated bogus type declarations. (reported by David Wragg and
2664 * bug fix: read-write consistency on streams of element-type
2665 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2666 * bug fix: redefiniton of the only method of a generic function with
2667 no DEFGENERIC no longer emits a full WARNING. In addition,
2668 redefinition of generic functions with no DEFGENERIC to an
2669 incompatible lambda list now signals an error. (thanks to Zach
2671 * bug fix: DEFGENERIC now works even when there's a function of the
2672 same name in an enclosing lexical environment. (thanks to Zach
2674 * fixed compiler failure, caused by instrumenting code during
2675 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2676 * optimization: added loop analysis and improved register allocation
2677 * fixed some bugs revealed by Paul Dietz' test suite:
2678 ** POSITION on displaced vectors with non-zero displacement
2679 returns the right answer.
2680 ** (SIMPLE-STRING) is a valid type specifier for sequence
2682 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2684 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2685 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2687 ** The justification version of the FORMAT ~< directive treats
2688 non-zero minpad parameter correctly.
2690 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2691 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2692 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2693 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2694 the supported interface.
2695 * new feature: Single-stepping of code compiled with DEBUG 2 or
2696 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2697 * new feature: saving cores with foreign code loaded is now
2698 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2699 Timothy Moore's work for CMUCL)
2700 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2701 parameters to * instead of NIL if no initform is supplied.
2702 (reported by Johan Bockgaard)
2703 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2704 correctly when FUNCALL appears as the car of the form. Note:
2705 despite this FUNCALL forms are not currently subject to
2706 compiler-macro expansion. (port of Raymond Toy's fix for the
2707 same from CMUCL, reported by Johan Bockgaard)
2708 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2709 (thanks for Teemu Kalvas)
2710 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2711 case instead of terminating the iteration (thanks for Julian
2712 Squires, Sean Champ and Raymond Toy)
2713 * bug fix: incorrect expansion of defgeneric that caused a style
2714 warning. (thanks for Zach Beane)
2715 * bug fix: slot accessor effective method computation works properly
2716 for classes with multiple non-standard applicable methods on
2717 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2718 * on x86 compiler supports stack allocation of results of LIST and
2719 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2720 CMUCL implementation by Gerd Moellmann)
2721 * fixed some bugs revealed by Paul Dietz' test suite:
2722 ** FORMAT strings with both the ~<~:;~> form of the justification
2723 directive and pretty-printing directives cause an error.
2725 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2726 * incompatible change: the internal functions
2727 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2728 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2729 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2730 instead of the old functions.
2731 * new feature: on platforms where "dladdr" is available foreign
2732 function names now appear in backtraces. (based on Helmut Eller's
2734 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2735 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2737 * documentation: ASDF manual is now distributed with SBCL.
2738 * bug fix: SBCL can now load its contributed modules with REQUIRE
2739 even if the system-provided entries have been removed from
2740 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2742 * bug fix: backtraces involving undefined functions or assembly
2743 routines are more informative. (thanks to Brian Downing)
2744 * bug fix: mutually referent alien structures now work correctly.
2745 (reported by Rick Taube)
2746 * bug fix: structures defined by WITH-ALIEN can be referred to
2747 within other definitions in the same WITH-ALIEN.
2748 * bug fix: division operators (MOD, TRUNCATE and the like) with
2749 constant zero divisors and integer dividends no longer generate
2751 * bug fix: provide default methods for INPUT-STREAM-P and
2752 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2753 * bug fix: improve the detection and resolution of MOP metacycles
2754 (where effective method computation depends on the generic function
2755 having its effective method computed). (reported by Bruno Haible)
2756 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2757 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2758 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2759 * bug fix: pathnames with relative directory components can be
2760 represented relative to default pathnames.
2761 * optimization: in taking the GCD of bignums, reduce the two bignums
2762 to approximately the same size (using Euclid's algorithm) before
2763 applying the more sophisticated binary GCD. (thanks to Juho
2765 * optimization: COUNT on bitvectors now operates word-at-a-time.
2766 * optimization: ASH with a positive, but not necessarily constant,
2767 (leftwards) shift, when in a modular context, is compiled to a
2769 * fixed some bugs revealed by Paul Dietz' test suite:
2770 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2771 if the corresponding argument is NIL.
2772 ** FORMAT directives accepting a minpad parameter treat negative
2774 ** literal commas as character parameters to FORMAT directives are
2776 ** literal spaces directly after ~<Newline> directives within a
2777 format-logical-block (~:< ~@:>) do not induce :FILL-style
2778 conditional newlines.
2779 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2780 as specified: it no longer includes conditional newlines).
2781 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2783 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2784 :PER-LINE-PREFIX argument does not evaluate to a string.
2786 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2787 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2788 the manual for details; for now, package locks can be disabled by
2789 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2790 if no major problems are found then it is likely that they will be
2791 compiled in unconditionally.
2792 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2793 unsupported operators on all platforms. To load a shared library
2794 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2795 object file, link it into a shared library outside of SBCL and
2796 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2798 * bug workaround: ROOM T and the GC were not working together
2799 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2800 reporting facility aren't preserved. That reporting has been
2801 disabled, so now until and unless someone figures out how to make it
2802 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2803 * minor incompatible change: as threatened around sbcl-0.8.0, the
2804 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2805 The symbols are also exported from SB-PCL for backwards
2806 compatibility, but more so than before SB-PCL should be treated as
2807 an implementation-internal package.
2808 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2810 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2811 It is known as of this release not to work on the Alpha, however.
2812 * fixed bug #167: errors signalled due to illegal syntax in method
2813 bodies are now more legible.
2814 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2815 designators and can hence be used with TYPEP.
2816 * fixed bug #333: CHECK-TYPE now ensures that the type error
2817 signalled, if any, has the right object to be accessed by
2818 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2819 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2820 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2822 * fixed bug #334: programmatic addition of slots using specialized
2823 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2824 and :ALLOCATION :CLASS slots.
2825 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2826 float exponents. (rereported by Peter Seibel)
2827 * fixed a bug: #\Space (and other whitespace characters) are no
2828 longer considered to be macro characters in standard syntax by
2829 GET-MACRO-CHARACTER.
2830 * fixed bug: initialization of condition class metaobjects no longer
2831 causes an instance of the condition to be created. (reported by
2833 * fixed bug: it is now possible to have slots such that
2834 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2835 description is neither :INSTANCE nor :CLASS.
2836 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2837 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2838 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2839 non-standard SLOT-DEFINITION-ALLOCATION values.
2840 * fixed bugs: various race conditions handling exiting threads.
2841 CL-PPCRE's thread torture test now passes.
2842 * fixed arguably-a-bug: GC time proportional to number of threads in
2843 system even when most of them are idle
2844 * optimization: improved performance of BIT and SBIT on bit-vectors.
2845 * .fasl file incompatibility: The fasl file version number has
2846 been incremented because of changes associated with package locks.
2848 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2849 * minor incompatible change: the system no longer provides
2850 optimization hints (conditions which are TYPEP
2851 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2852 mode; these hints are still emitted when higher SPEED optimization
2854 * new contrib module: a sampling profiler (profiling by statistical
2855 sampling, rather than by instrumenting functions) is available as
2856 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2857 * the behaviour of the standard function ED is now customizeable by
2858 third parties through a hook variable: see ED's documentation
2859 string for information on the protocol.
2860 * the compiler no longer emits efficiency notes for (FUNCALL X)
2861 when the type of X is uncertain under default optimization
2863 * fixed bug 276: mutating a binding of a specialized parameter to a
2864 method to something that is not TYPEP the specializer is now
2866 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2867 exhibit the required behaviour on the x86 platform. (thanks to
2868 Peter van Eynde, Eric Marsden and Bruno Haible)
2869 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2870 even for difficult arguments. (reported by Peter Graves)
2871 * fixed bug 141a: the backquote printer now descends quoted
2873 * fixed another bug in backquote printing: no more destructive
2874 modification of the form's list structure. (reported by Brian
2876 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2877 move between its address being taken and the call to
2878 interrupt_thread, fixing a crashing race condition.
2879 * the SB-POSIX contrib implementation has been adjusted so that it
2880 no longer exhibits ridiculously poor performance when constructing
2881 instances corresponding to C structs.
2883 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2884 * minor incompatible change: the sb-grovel contrib now treats C
2885 structures as alien (in the sense of SB-ALIEN) objects rather than
2886 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2887 has implications for memory management of client code
2888 (sb-grovel-returned objects must now be manually managed) and for
2889 type safety (alien objects now have full types).
2890 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2891 used to control emission of compiler diagnostics, rather than the
2892 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2893 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2894 quality should be considered deprecated.
2895 * install.sh now installs the user manual as well
2896 * (not quite a new documentable feature, but worth considering in
2897 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2898 beginnings of a semantically meaningful condition hierarchy is
2899 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2901 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2902 designator as the defaults argument.
2903 * fixed bug: Displaced arrays whose displaced-to array has become
2904 too small now cause ARRAY-DIMENSION to signal an error, providing
2905 for safer bounds-checking. (reported by Bruno Haible)
2906 * fixed bug: DEFCLASS slot definitions with identical :READER and
2907 :WRITER names now signal a reasonable error. (reported by Thomas
2909 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2911 * fixed bug: Invalid slot specification errors now print correctly.
2912 (thanks to Zach Beane)
2913 * fixed bug 320: Shared to local slot value transfers in class
2914 redefinitions now happen corrently from superclasses as
2915 well. (reported by Bruno Haible)
2916 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2918 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2919 improper lists correctly. (reported by Bruno Haible)
2920 * fixed bug 313: source-transform for <fun-name> was erroneously
2921 applied to a call of a value of a variable with name <fun-name>.
2922 (reported by Antonio Menezes Leitao)
2923 * fixed bug 307: The obsolete instance protocol ensures that
2924 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2925 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2926 remove dead unknown-values globs from the middle of the stack.
2927 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2928 easier to resume long computations after using *BREAK-ON-SIGNALS*
2929 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2930 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2931 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2932 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2933 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2934 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2936 * fixed a (fairly theoretical) bug in string printing: if
2937 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2938 does not have array-element-type equal to the most general string
2940 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2941 function name. (thanks to Nikodemus Siivola)
2942 * fixed bug: compile-time format string checker failed on
2943 non-closed ~{. (reported by Thomas F Burdick)
2944 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2945 don't warn on legal loop code involving more than one aggregate
2946 boolean. (thanks to Nikodemus Siivola)
2947 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2948 in keyword position to MAKE-PACKAGE was not being reported as
2950 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2951 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2953 * fixed bugs 280 and 312: the checking for multiple definitions in a
2954 file is less likely to become confused by uses of inline
2956 * fixed bug: the #S reader macro performs the keyword coercion
2957 specified for slot names. (reported by Kalle Niemitalo)
2958 * fixed bug: lambda lists may contain symbols whose names start with
2959 & but are not lambda-list-keywords; their occurrence triggers a
2961 * fixed bug 321: define-method-combination argument lambda lists do
2962 not cause invalid code to be generated when &optional or &aux
2963 variables have default values. (reported by Bruno Haible)
2964 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2965 have CLOS classes; this appears also to have fixed reported
2966 instability in stack exhaustion detection.
2967 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2968 MUFFLE-WARNING when no associated restart is present is now
2970 * optimization: rearranged the expansion of various defining macros
2971 so that each expands into only one top-level form in a
2972 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2974 * optimization: used a previously little-used slot in symbols to
2975 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2977 * fixed some bugs revealed by Paul Dietz' test suite:
2978 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2980 ** Fixed an optimization bug related to inheritance of initforms
2981 from local to shared slots.
2982 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2983 ** CAST optimizer forgot to flush argument derived type.
2984 ** print/read consistency on floats is now orders of magnitude
2985 more likely. (thanks also to Bruno Haible for a similar report
2987 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2988 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2989 for objects of type REAL. Make it so.
2990 ** SXHASH is specified (infelicitously) to respect similarity,
2991 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2992 it so. (thanks to Markus Ziegler)
2993 ** on the Alpha, the compiler succeeds in compiling functions
2994 returning a known number of arguments greater than 63.
2995 ** fixed handling of invalid NIL arguments in keyword position
2997 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2999 ** provided a readably-printable representation for RANDOM-STATE
3001 ** ensured that pathnames, where they have a namestring, always
3002 print using #P"..." syntax.
3004 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
3005 * Support for the forthcoming 2.0 version of the NetBSD kernel
3006 running on x86 hardware has been added. (thanks to Perry
3007 E. Metzger most immediately, and others for their past work)
3008 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3009 current release version; SBCL's OpenBSD support had been broken
3010 since about the time of OpenBSD's switch to ELF binary format.)
3011 * [placeholder for DX summary]
3012 ** user code with &REST lists declared dynamic-extent, under high
3013 speed or space and low safety and debug optimization policy.
3014 * The manual has been converted to Texinfo format and the debugger
3015 chapter from the cmucl manual has been added.
3016 * A facility has been added to extract documentation strings from
3017 sbcl and store them as Texinfo-formatted snippets for inclusion in
3018 the manual (via Texinfo's @include directive)
3019 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3020 the test case to Dave Roberts)
3021 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3022 pointers. (reported by Sean Ross)
3023 * bug fix: PROFILE output is printed nicely even for large numerical
3024 values. (thanks to Zach Beane)
3025 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3026 greater than 32 handle EOF correctly.
3027 * bug fix: on X86 an immediate argument of the IMUL instruction is
3028 correctly printed in disassembly. (thanks to Lutz Euler)
3029 * bug fix: class slots in redefined classes preserve their old
3030 values. (thanks to Bruno Haible and Nikodemus Siivola)
3031 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3032 succeeds. (reported by Marco Baringer)
3033 * fixed some bugs revealed by Paul Dietz' test suite:
3034 ** READ-SEQUENCE now works on ECHO-STREAMs.
3035 ** RATIONALIZE works more according to its specification. (thanks
3038 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3039 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3040 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3041 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3042 should matter to you only if you rebind the printer control
3043 variables and then find you want different bindings in the
3044 debugger than in the ordinary execution of your program.)
3045 * The runtime build system has been tweaked to support building
3046 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3047 assembler and linker. (thanks to Nikodemus Siivola)
3048 * Unbound, undefined, undeclared variables now trigger full
3049 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3050 more often programmer error than deliberate exploitation of undefined
3052 * optimization: the hash algorithm for strings has changed to one
3053 that is less vulnerable to spurious collisions. (thanks to Juho
3055 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3056 needless bounds checking. (thanks to Juho Snellman)
3057 * optimization: implemented multiplication as a modular
3058 (UNSIGNED-BYTE 32) operation on the PPC backend.
3059 * fixed some bugs revealed by Paul Dietz' test suite:
3060 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3062 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3063 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3064 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3066 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3068 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3070 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3071 their output stream on EOF from read.
3072 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3073 have been read to end-of-file.
3074 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3076 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3077 description of determination of which consecutive characters
3079 ** Printing the "Space" character with escaping on now yields "#\\ ",
3080 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3081 ** Reading floating-point numbers with *READ-BASE* set to a number
3082 less than 10 works correctly.
3083 ** Reading floating-point numbers with *READ-BASE* set to a number
3084 more than 10 works correctly.
3085 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3086 the readtable currently in effect.
3088 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3089 * minor incompatible change: parsing of namestrings on a physical
3090 (Unix) host has changed; numbers after the final #\. in a
3091 namestring are no longer interpreted as a version field. This is
3092 intented to be largely invisible to the user, except that the
3093 meaning of the namestring "*.*.*" has changed: it now refers to a
3094 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3095 should usually be replaced by
3096 (make-pathname :name :wild :type :wild :version :wild)
3097 with the added benefit that this is more likely to be portable.
3098 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3099 option to OPEN now signals an error if the file being opened
3100 exists; this may have an impact on existing code.
3101 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3102 signals received, on the PowerPC platforms (both Linux and
3103 Darwin). (thanks to Pierre Mai for pointing out the location of
3105 * several fixes on OS X: The system now builds and runs cleanly on
3106 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3107 (thanks to Brian Mastenbrook)
3108 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3109 second-resolution: integer multiples of 1/3600 between -24 and 24.
3110 (thanks to Vincent Arkesteijn)
3111 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3112 type when called with 1 argument; PEEK-CHAR checked type of
3113 PEEK-TYPE only after having read first character from a
3114 stream. (reported by Peter Graves)
3115 * bug fix: the garbage collector now has much better locality
3116 behaviour, and in particular no longer treats all memory as being
3117 exhausted when many small objects point to each other in a deeply
3119 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3120 recognized as being TYPEP their class.
3121 * bug fix: the PUSHNEW documentation string has been corrected.
3122 (thanks to Vincent Arkesteijn)
3123 * bug fix: defaulting of the value for the last of an atypically
3124 large number of multiple values being bound was not being
3125 performed correctly on the Alpha or PPC platforms
3126 * optimization: implemented multiplication as a modular
3127 (UNSIGNED-BYTE 32) operation on the x86 backend.
3128 * optimization: SEARCH on simple-base-strings can now be open-coded.
3129 (see also contrib/compiler-extras.lisp for inspiration for
3130 teaching the compiler about the Boyer-Moore algorithm).
3131 * value, returned by MAX (and MIN) called with several EQUALP, but
3132 not EQL, arguments now does not depend on compiler settings.
3133 * fixed some bugs revealed by Paul Dietz' test suite:
3134 ** in stack analysis liveness information is propagated from
3135 non-local entry points.
3136 ** pathwise CAST removing failed when the CAST node did not start
3138 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3139 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3141 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3142 host is already defined.
3143 ** RENAME-FILE works on streams instead of signalling an internal
3145 ** PEEK-CHAR uses the current readtable when determining whether
3146 or not a character is whitespace.
3147 ** MERGE-PATHNAMES handles the case when the pathname does not
3148 specify a name while the default-pathname specifies a version.
3149 ** Pathnames now stand a better chance of respecting print/read
3151 ** Attempting to use standardized file system operators with a
3152 pathname with invalid :DIRECTORY components signals a
3154 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3156 ** DIRECTORY on logical pathnames is more correct.
3157 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3158 signal a TYPE-ERROR if their argument is not a stream.
3159 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3160 designator argument does not designate a stream.
3161 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3162 examining the synonym.
3163 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3165 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3166 element-type larger than ([UN]SIGNED-BYTE 32).
3168 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3169 * When built with the :SB-FUTEX feature, threaded builds now take
3170 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3171 for faster/more reliable mutex and condition variable support.
3172 * Incompatible change (but one you probably shouldn't have been using
3173 anyway): the interface and code for arbitrating between multiple
3174 threads in the same user session has been redesigned.
3175 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3176 error when called without an explicit environment argument.
3177 (thanks to Nikodemus Siivola)
3178 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3179 confused about their position. (thanks to Adam Warner and Gerd
3181 * bug fix: Pretty printing backquoted forms with unquotations in the
3182 argument list position of various code constructs such as LAMBDA
3183 now works correctly. (reported by Paul Dietz)
3184 * bug fix: Pretty printing unquotations no longer loses all
3185 stream position information.
3186 * optimization: performance of string output streams is now less
3187 poor for multiple small sequence writes.
3188 * optimization: performance of CSUBTYPEP in the presence of complex
3189 expressions involving CONS and NOT many times has been improved.
3190 (reported by Paul Dietz)
3191 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3193 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3194 streams for the REPL, for the debugger, and so on. (thanks to
3196 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3197 * fixed some bugs revealed by Paul Dietz' test suite:
3198 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3199 is ignored if it is too small, rather than propagating through
3200 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3201 ** extremely complex negations of CONS types were not being
3202 sufficiently canonicalized, leading to inconsistencies in
3204 ** VALUES tranformer lost derived type.
3206 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3207 * fixed a bootstrapping bug: the build process no longer assumes
3208 that the various BOOLE-related constants have the same value in
3209 host and target lisps. (noted by Paul Dietz' test suite on an
3210 SBCL binary built from CLISP)
3211 * The system can now be dynamically linked on the MIPS platform,
3212 which enables dynamic loading of foreign code from Lisp. (thanks
3213 to Ralf Baechle for discussions on the MIPS ABI)
3214 * The system now records debugging information for its own source
3215 files in a filesystem-position-independent manner, relative to
3216 the "SYS" logical host.
3217 * fixed a compiler bug: MV-LET convertion did not check references
3218 to the "max args" entry point. (reported by Brian Downing)
3219 * tweaked disassembly notes to be less confident about proclaiming
3220 some instruction as an LRA. (thanks to Brian Downing)
3221 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3222 now each have their own history, command character, and other
3223 characteristics. (thanks to David Lichteblau)
3224 * fixed some bugs revealed by Paul Dietz' test suite:
3225 ** compiler failure in compiling LOGAND expressions including a
3227 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3228 shift greater than 32.
3229 ** FLUSH-DEST did not mark blocks for type check regeneration.
3230 ** HANDLER-CASE failed to accept declarations in handler clauses
3231 in some circumstances.
3233 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3234 * New code in contrib/sb-introspect (still probably not entirely
3235 stable yet) provides some support for smart Lisp development
3236 environments like SLIME.
3237 * The conditions signalled for errors occurring when loading .fasl
3238 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3239 in a way which should help ASDF recover gracefully.
3240 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3241 stuff has been cleaned up. If you code contrib/ stuff, this might
3242 affect you, and you can look at contrib/README, contrib/STANDARDS,
3243 and/or the 0.8.4.27 diff to check.
3244 * In full calls the compiler now does not generate checks for declared
3245 argument types for all arguments.
3246 * various threading fixes
3247 ** and some experimental patches which didn't make it into
3248 the main tree for this release, but which are shipped in
3249 contrib/experimental-thread.patch as a possible fix for some
3250 failures (deadlock, spinning...) in GC-intensive multithreaded
3252 * fixed PPC build problem (source code incompatibility of different
3253 library versions): added offsetof() hackery which attempts to divine
3254 where glibc maintainers put uc_mcontext today
3255 * fixed bug 282: compiler does not trust type assertions while passing
3256 arguments to a full call.
3257 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3258 &OPTIONAL VALUES type parameter.
3259 * fix bug 214: algorithm for noting rejected templates is now more
3260 similar to that of template seletion. (also reported by rydis on
3262 * fixed bug 141b: printing backquoted information readably and prettily
3263 inserts a space where necessary.
3264 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3265 (CHARACTER 10) are now reported as errors, rather than propagated
3266 as unknown types. (reported by piso on #lisp)
3267 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3268 with values NIL and :ERROR. (thanks to Milan Zamazal)
3269 * fixed bug 191c: CLOS now does proper keyword argument checking as
3270 described in CLHS 7.6.5 and 7.6.5.1.
3271 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3272 longer raise an error; further, using a list as a for-as-arithmetic
3273 counter now raises a meaningful error.
3274 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3275 now understood by sequence creation functions such as MAKE-SEQUENCE
3277 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3278 a STRING-INPUT-STREAM.
3279 * compiler enhancement: SIGNUM is now better able to derive the type
3281 * type declarations inside WITH-SLOTS are checked. (reported by
3283 * fixed some bugs revealed by Paul Dietz' test suite:
3284 ** incorrect optimization of TRUNCATE for a positive first
3285 argument and negative second.
3286 ** compiler failure in let-convertion during flushing dead code.
3287 ** compiler failure while deriving type of TRUNCATE on an
3288 interval, containing 0.
3289 ** ASH of a negative bignum by a negative bignum count now returns
3291 ** intersection of CONS types now canonicalizes properly, fixing
3292 inconsistencies in SUBTYPEP.
3294 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3295 * incompatible change: The --disable-debugger command line
3296 option now clobbers the debugger at a more fundamental
3297 level, by redefining #'INVOKE-DEBUGGER instead of by
3298 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3299 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3300 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3301 enter the debugger REPL and then suffer recursive errors
3302 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3303 while under the new system, BREAK in --disable-debugger mode
3304 terminates the system just as an unhandled error would.
3305 * fixed compiler performance when processing loops with a step >1;
3306 * bug fix: DOCUMENTATION now retrieves generic function
3307 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3308 support has been systematized, and now supports the methods
3309 specified by ANSI, along with a default method and a method for
3310 slot documentation. (reported by Nathan Froyd)
3311 * bug fix: effective methods associated with a generic function are
3312 no longer cached over a change of that generic function's method
3313 combination. (reported by Andreas Fuchs)
3314 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3315 names a non-existent directory. (thanks to Andreas Fuchs)
3316 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3317 the PPC platform, lead to stack corruption; this has been fixed.
3318 (reported by Rainer Joswig)
3319 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3320 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3321 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3322 arithmetic in general, is now much more reliable on the PPC
3324 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3325 platform now returns the right answer.
3326 * optimization: restored some effective method precomputation in
3327 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3328 precomputation is now tunable.
3329 * optimization: compiler-internal data structure use has been
3330 reviewed, and changes have been made that should improve the
3331 performance of the compiler by about 20%.
3332 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3333 simple-base-strings and simple-bit-vectors is improved.
3334 * optimization: the optimization of 32-bit logical and arithmetic
3335 functions introduced in version 0.8.3 on the x86 has been
3336 implemented on the mips, ppc and sparc platforms; an
3337 implementation of the same facility, but for 64-bit arithmetic,
3338 has been added for the alpha.
3339 * microoptimization: the compiler is better able to make use of the
3340 x86 LEA instruction for multiplication by constants.
3341 * bug fix: in some situations compiler did not report usage of
3342 generic arithmetic in (SPEED 3) policy.
3343 * bug 145b fix: compiler used wrong type specifier while converting
3344 MEMBER-types to numeric.
3345 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3347 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3348 index argument now works properly on the Alpha platform.
3349 * bug fix: floating point exception treatment on the Alpha platform
3351 * bug fix: FILE-POSITION works much better on string input and
3352 output streams. (thanks to Nikodemus Siivola)
3353 * bug fix: many threading/garbage collection symptoms sorted.
3354 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3355 might be pseudo-atomic.
3356 * internal change: Stopping for GC is now done with signals not
3357 ptrace. GC is now done in whichever thread wanted it, instead of
3359 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3361 * bug fix: result form in DO is not contained in the implicit
3363 * incompatible change: ICR structure is changed; the value part of
3364 CONTINUATION is now called LVAR; corresponding functions are
3365 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3366 * added type deriver for ISQRT (thanks to Robert E. Brown).
3367 * bug fix: better support for loading from the command line when an
3368 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3370 * fixed some bugs revealed by Paul Dietz' test suite:
3371 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3372 ** ROUND and FROUND now give the right answer when given very
3373 small float arguments.
3374 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3376 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3377 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3378 ** LCM should return a non-negative integer.
3379 ** PARSE-INTEGER returned the index of a terminator instead of the
3380 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3381 ** PARSE-INTEGER returned an incorrect index being applied to a
3383 ** LCM with two arguments of 0 returns 0 rather than signalling
3385 ** unsigned addition of a 32-bit constant with the high bit set no
3386 longer causes an internal compiler error on the x86.
3387 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3388 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3389 with negative last argument.
3390 ** byte specifiers with zero size and position no longer cause
3391 an error during type derivation.
3392 ** bignum multiplication on the Alpha platform now returns the
3394 * porting: The system now builds on SuSE AMD64, although it still
3395 generates a 32-bit binary.
3396 * .fasl file incompatibility: The fasl file version number has
3397 been incremented (because of the changes to internal compiler
3398 data structures referred to above).
3400 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3401 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3402 more accurately, on the Darwin kernel running on PowerPC hardware.
3403 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3404 * Compiler code deletion notes now signal a condition of type
3405 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3406 an associated MUFFLE-WARNING restart.
3407 * The compiler now performs limited argument count validation of
3408 constant format strings in FORMAT, and where appropriate in ERROR,
3409 CERROR and WARN. (thanks to Gerd Moellmann)
3410 * New ASDF-INSTALL contrib can be used for automatic download and
3411 installation of third-party Lisp code from CCLAN or other sites
3413 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3414 which forces another thread to execute a function supplied by the
3416 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3417 now accept and act upon their :ELEMENT-TYPE keyword argument.
3418 (reported by Martin Atzmueller, Edi Weitz)
3419 * bug fix: FILE-POSITION now accepts position designators up to
3420 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3421 is the greater. (thanks to Patrik Nordebo)
3422 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3423 Kalle Olavi Niemitalo)
3424 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3425 printable. (reported by Eric Marsden)
3426 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3427 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3428 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3429 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3430 (thanks to Stig Sandoe)
3431 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3432 UNREAD-CHAR now correctly includes the unread character in the
3433 target sequence. (thanks to Gerd Moellmann)
3434 * bug fix in threaded builds: the system can now be suspended and
3435 resumed by shell job control with minimal disruption.
3436 * bug fixes in times and timezones >2038AD
3437 * better handling of "where is GNU make?" problem in build scripts
3438 (thanks to Nikodemus Siivola)
3439 * new optimization: inside a named function any reference to a
3440 function with the same name is considered to be a self-reference;
3441 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3442 optimization quality.
3443 * new optimization on x86: logical functions and + now have
3444 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3445 used when the result is truncated to 32 bits.
3446 * VALUES declaration is partially enabled.
3447 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3448 * fixed some bugs revealed by Paul Dietz' test suite:
3449 ** The system now obeys the constraint imposed by
3450 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3451 types form a lattice under type intersection.
3452 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3453 ** ASSOC now ignores NIL elements in an alist.
3454 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3455 and (1+ MOST-POSITIVE-FIXNUM) answers.
3456 ** The addition of a method with invalid qualifiers to a generic
3457 function does not cause an error to be signalled immediately;
3458 a warning is signalled, and the error is generated only on
3459 calling the generic function.
3460 * changed .fasl file version number, in part to add type codes for
3461 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3462 obscure ANSI requirements
3464 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3465 * fixed bug 148: failure to inline-expand a local function left
3466 garbage, confusing the compiler.
3467 * fixed bugs 3cd: structure slot readers perform type check if the
3468 slot can have an invalid value (i.e. it is either not initialized
3469 or can be written with a less specific slot writer).
3470 * bug fix: the compiler now traps array references to elements off
3471 the end of an array; previously, the bounds checking in some
3472 circumstances could go off-by-one.
3473 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3475 * type declarations for array element types now obey the description
3476 on the CLHS page "Declaration TYPE", as per discussions on
3477 sbcl-help around 2003-05-08. This means that a declaration
3478 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3479 declaration, all references to BAR will be asserted or assumed
3480 (with THE, so dependent on compiler policy) to involve objects of
3481 type FOO. Note that no such declaration is implied in
3482 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3483 * declared types of functions from the "Conditions"
3484 chapter. (reported by Paul Dietz)
3485 * bug fix: CERROR accepts a function as its first argument.
3486 * bug fix: NTH an NTHCDR accept a bignum as index
3487 arguments. (reported by Adam Warner)
3488 * optimization: character compare routines now optimize comparing
3489 against a constant character. (reported by Gilbert Baumann)
3490 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3491 argument now works properly on the MIPS platform.
3492 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3493 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3494 declared to have a functional type, does not cause an error
3496 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3497 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3498 * fixed bug: if last continuation of a deleted block has a
3499 destination, this destination should be deleted too. (reported by
3501 * fixed a bug in the bootstrap process: the host compiler's values
3502 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3503 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3504 test case from Patrik Nordebo)
3505 * improved the ability of the disassembler on the PPC platform to
3506 provide helpful disassembly notes.
3507 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3508 the class in more cases than previously.
3509 * bug fix: FILE-POSITION now understands :START and :END for
3510 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3511 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3512 8) data. (thanks to David Lichteblau)
3513 * bug fix: it is possible to add a method to a generic function
3514 without lambda list.
3515 * bug fix: reader failed to signal END-OF-FILE inside an
3516 object representation. (reported by Nikodemus Siivola)
3517 * fixed some bugs revealed by Paul Dietz' test suite:
3518 ** LAST and [N]BUTLAST should accept a bignum.
3519 ** condition slot accessors are methods.
3520 ** (VECTOR NIL) is a subtype of STRING.
3522 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3523 * minor incompatible change: some nonsensical specialized lambda
3524 lists (used in DEFMETHOD) which were previously ignored now signal
3526 * minor incompatible change: the system is now aware of the types of
3527 variables in the COMMON-LISP package, and will signal errors for
3528 most violations of these type constraints (where previously they
3529 were silently accepted).
3530 * minor incompatible change: COMPILE-FILE now uses the freedom
3531 afforded (ANSI 3.2.2.3) to use derived function types for
3532 functions defined in the same file. This also permits the system
3533 to warn on static type mismatches and function
3534 redefinition. (Currently it does not work with high DEBUG level.)
3535 * minor incompatible change: VALUES declaration is disabled.
3536 * When issuing notes, the compiler now signals a condition of type
3537 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3538 restart for use in user handlers. It is expected that the
3539 COMPILER-NOTE condition will eventually become a condition
3540 supertype to a hierarchy of note types, which will then be
3541 handleable in a similar fashion. However, at the moment, no such
3542 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3543 but it's an implementation detail, not a classification for the
3545 * Changes in type checking closed the following bugs:
3546 ** type checking of unused values (192b, 194d, 203);
3547 ** template selection based on unsafe type assertions (192c, 236);
3548 ** type checking in branches (194bc).
3549 * A short form of VALUES type specifier has ANSI meaning (it has
3550 increased the number of situations when SBCL cannot perform type
3552 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3553 keywords or constants is permissible.
3554 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3555 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3556 classes. (thanks to Antonio Martinez)
3557 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3558 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3559 argument to a pretty-print stream. Instead, it leaves any such
3560 operations to DESCRIBE-OBJECT methods.
3561 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3563 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3564 lambda lists. (thanks to David Lichteblau)
3565 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3566 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3567 (thanks to Gerd Moellmann)
3568 * fixed bug 246: increased compilation speed of long
3569 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3571 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3573 * DEFCONSTANT now throws a condition of type
3574 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3575 constant to a non-EQL value; CONTINUE and ABORT restarts
3576 respectively change and preserve the value.
3577 * fixed bug 63: The code walker, part of the implementation of CLOS,
3578 is now better at handling symbol macros.
3579 * bug fix: There is no longer an internal implementation type named
3580 CL:LENGTH. (reported by Raymond Toy)
3581 * bug fix: In macro-like defining macros/special operators the
3582 implicit block does not enclose the lambda list.
3583 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3584 enclosed in parentheses) are not suitable as type specifiers, and
3585 their use properly signals an error now.
3586 * bug fix: An argument count mismatch for a type specifier in code
3587 being compiled no longer causes an unhandled error at compile
3588 time, but signals a compile-time warning.
3589 * fixed simple vector readable printing
3590 * bug fix: DESCRIBE takes more care over whether the class
3591 precedence list slot of a class is bound before accessing it.
3592 (reported by Markus Krummenacker)
3593 * bug fix: FORMATTER can successfully compile pretty-printer format
3594 strings which use variants of the ~* directive inside.
3595 * bug fix: SEARCH now applies its TEST predicate to the elements of
3596 the arguments in the correct order. (thanks to Wolfhard Buss)
3597 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3598 in type inference. (thanks to Robert E. Brown)
3599 * bug fix: Reading in symbols with an explicit package name of ""
3600 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3601 * fixed some bugs revealed by Paul Dietz' test suite:
3602 ** NIL is now allowed as a structure slot name.
3603 ** Arbitrary numbers, not just REALs, are allowed in certain
3604 circumstances in LOOP for-as-arithmetic clauses.
3605 ** Multiple class redefinitions before slot access no longer
3606 causes a type error.
3607 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3608 association between the name and a class.
3609 ** Generic functions with non-standard method-combination and over
3610 five methods all of which return constants no longer return NIL
3611 after the first few invocations. (thanks to Gerd Moellmann)
3612 ** CALL-NEXT-METHOD with no arguments now passes the original
3613 values of the arguments, even in the presence of assignment.
3614 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3616 ** DISASSEMBLE works with closures and funcallable instances.
3617 ** ADD-METHOD now returns the generic function, not the new method.
3618 ** FIND-METHOD signals an error if the lengths of the specializers
3619 is incompatible with the generic function, even if the ERRORP
3621 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3622 which its argument is a member.
3623 ** DEFCLASS only redefines the class named by its class-name
3624 argument if that name is the proper name of the class;
3625 otherwise, it creates a new class.
3626 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3627 of the UNBOUND-SLOT condition to the name of the slot.
3628 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3629 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3630 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3631 SLOT-MAKUNBOUND in the specified fashion.
3633 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3634 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3635 cross-compilation host. As a consequence, we can now bootstrap our
3636 way up to SBCL starting with a bare gcc toolchain and human-readable
3637 source code (first the source to CLISP, then the source to SBCL).
3638 * A contributed module containing a partial implementation of the
3639 simple-streams interface has been included. (thanks to Rudi
3641 * A contributed module implementing the RFC1321 Message Digest
3642 Algorithm, known as MD5, has been included.
3643 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3644 no longer has any effect, as the code controlled by this feature
3645 has been deleted. (As far as we know, no-one has ever built using
3646 this feature, and its semantics were confused in any case).
3647 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3648 work on conditions (as required by the ANSI specification),
3649 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3650 expected behaviour on conditions. Users should note, however,
3651 that such behaviour is not required by the ANSI specification,
3652 and so use of this behaviour may render their code unportable.
3653 * fixed some bugs revealed by Paul Dietz' test suite:
3654 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3656 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3657 ** SXHASH on condition objects no longer returns NIL.
3658 ** :ALLOCATION :CLASS slots are better treated; their values are
3659 updated on class redefinition, and initforms inherited from
3660 superclasses are applied.
3661 ** REMOVE-METHOD returns its generic function argument even when
3662 no method was removed.
3663 ** SHARED-INITIALIZE now initializes the values of the requested
3664 slots, including those with :ALLOCATION :CLASS.
3665 ** ALLOCATE-INSTANCE now works on structure classes defined via
3666 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3668 ** SLOT-EXISTS-P now works on conditions, as well as structures
3670 ** MAKE-LOAD-FORM now has the required methods on
3671 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3672 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3673 keyword, and now implements the SLOT-NAMES argument.
3674 ** methods with &OPTIONAL arguments no longer allow too many
3675 arguments to be passed in the call without error.
3676 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3677 option is consistent with the required arguments of the generic
3678 function lambda list.
3679 * bug fix: REQUIRE accepts a string designator. (Thanks to
3681 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3682 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3683 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3684 * bug fix: The compiler now checks for duplicated variables in macro
3686 * bug fix: SETQ on globals returns the correct value.
3687 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3688 not a COMPILER-ERROR (followed by some other strange error on
3689 choosing the CONTINUE restart).
3690 * bug fix: make.sh and friends are now more consistent in the way that
3691 they look for GNU "make".
3693 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3694 * experimental native threads support (on x86 Linux >=2.4 only).
3695 This is not compiled in by default: you need to add :SB-THREAD to
3696 the target features. See the "Beyond ANSI" chapter of the manual
3698 * fix for longstanding nonANSIism: The old distinction between
3699 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3700 The return value from CL:FIND-CLASS is now a CLOS class, and
3701 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3702 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3703 * An interface to the MetaObject Protocol, as described in Kiczales,
3704 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3705 MIT Press, 1991, is available from the SB-MOP package.
3706 * incompatible change: the SB-PCL package should now be considered
3707 a private implementation detail, and no longer a semi-private MOP
3709 * minor incompatible change: due to rearrangement for threads, the
3710 control stack and binding stack are now allocated at arbitrary
3711 addresses instead of being hardcoded per-port. Users affected by
3712 this probably have to be doing advanced things with shared
3713 libraries, and will know who they are.
3714 * minor incompatible change: Previously, all --eval forms used were
3715 processed with READ before any of them were processed with EVAL.
3716 Now each --eval form is processed with both READ and EVAL before
3717 the next --eval form is processed. (Thus package operations like
3718 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3719 work as the user might reasonably expect.)
3720 * minor incompatible change: *STANDARD-INPUT* is now only an
3721 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3723 * minor incompatible change: Y-OR-N-P is now character-oriented,
3724 not line oriented. Also, YES-OR-NO-P now works without errors.
3725 (thanks to Antonio Martinez)
3726 * sb-aclrepl module improvements: an integrated inspector, added
3727 repl features, and a bug fix to :trace command.
3728 * Known functions, which cannot be open coded by the backend, are
3729 considered to be able to check types of their arguments. (fixing
3730 a bug report by Nathan J. Froyd)
3731 * fixed a bug in computing method discriminating functions: It is
3732 now possible to define methods specialized on classes which have
3733 forward-referenced superclasses. (thanks to Gerd Moellmann)
3734 * fixed evaluation order in optional entries (reported by Gilbert
3736 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3737 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3738 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3739 required-by-AMOP NAME argument, as well as CLASS and
3740 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3741 * fixed bug 20: DEFMETHOD can define methods using names that are
3742 not the proper names of classes to designate class specializers.
3743 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3744 Unix file descriptors, instead of blowing up. (thanks to Antonio
3746 * Garbage collection refactoring: user-visible change is that a
3747 call to the GC function during WITHOUT-GCING will not do garbage
3748 collection until the end of the WITHOUT-GCING. If you were doing
3749 this you were probably losing anyway.
3750 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3751 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3752 TYPEP the latter but not the former.
3753 * The compiler issues a full WARNING for calls to undefined functions
3754 with names from the CL package.
3755 * MAP-INTO for a vector destination is open coded. (reported by
3756 Brian Downing on c.l.l)
3757 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3758 documentation string.
3759 * fixed some bugs revealed by Paul Dietz' test suite:
3760 ** COPY-ALIST now signals an error if its argument is a dotted
3762 ** Condition slots are now accessed more correctly in the presence
3763 of multiple initargs for a given slot.
3764 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3765 exclude restarts of the same name associated with a different
3767 ** DEFCLASS of forward-referenced classes with another
3768 forward-referenced class in the superclasses list no longer
3770 ** Condition slots are now initialized once each, not multiple
3771 times. (thanks to Gerd Moellmann)
3772 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3774 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3775 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3776 arguments contain duplicated elements.
3777 ** RESTART-CASE understands local macros.
3778 ** RESTART-CASE associates exactly its own restarts with a condition.
3779 ** ENDP in safe mode checks its argument to be of type LIST.
3780 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3781 in question is unbound.
3782 ** Optimized MAKE-INSTANCE functions no longer cause internal
3783 assertion failures in the presence of duplicate initargs.
3784 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3785 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3786 propagated even in the ctor optimized implementation of
3788 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3790 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3791 * a better implementation of SXHASH on (simple) bit vectors,
3792 measured both in execution speed and in distribution of results
3793 over the positive fixnums, has been installed. Likewise, a better
3794 implementation of EQUAL for simple bit vectors is now available.
3795 * fixed CEILING optimization for a divisor of form 2^k.
3796 * fixed bug 240 (emitting extra style warnings "using the lexical
3797 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3798 by Antonio Martinez)
3799 * fixed SXHASH, giving different results for NIL depending on type
3800 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3801 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3802 variable. (found by Rolf Wester)
3803 * SBCL does not ignore type declarations for special
3804 variables. (reported by rif on c.l.l 2003-03-05)
3805 * some bug fixes in contrib/sb-aclrepl/
3806 * fixed some bugs revealed by Paul Dietz' test suite:
3807 ** a bug in the CONS type specifier, whereby the CAR and CDR
3808 types got intertwined, has been fixed;
3809 ** the type system is now able to reason about the interaction
3810 between INTEGER and RATIO types more completely;
3811 ** APPEND, [N]REVERSE and NRECONC check that those their
3812 arguments, which must be proper lists, are really so;
3813 ** An array specialized to be unable to hold elements has been
3814 implemented, as required -- yes, really -- by ANSI;
3815 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3816 on malformed property lists;
3818 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3819 * incompatible packaging change: in line with Unix convention,
3820 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3821 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3822 * REQUIRE and PROVIDE are now optionally capable of doing something
3823 useful. See the documentation string for REQUIRE.
3824 * infrastructure for a managed SBCL contrib system: contributed
3825 modules in this release include:
3826 ** the ASDF system definition facility;
3827 ** an interface to the BSD Sockets API;
3828 ** an ACL-like convenience interface to the repl;
3829 (thanks to Kevin Rosenberg)
3830 ** an implementation of ROTATE-BYTE, with efficient implementation
3832 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3833 gives a closer approximation to the right answer than previously.
3834 (thanks to Raymond Toy)
3835 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3836 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3837 optional environment arguments, as required by ANSI.
3838 * fixed bugs in other functions taking environment objects, allowing
3839 calls with an explicit NIL environment argument to be compiled
3841 * fixed bug 228: primary return values from
3842 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3843 COMPILE or FUNCTION.
3844 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3845 :TYPE will no longer signal errors on innocuous objects.
3846 * fixed bug 231b: SETQ is better at respecting type declarations in
3847 the lexical environment.
3848 * fixed a bug in DEFCLASS: classes named by symbols with no or
3849 unprintable packages can now be defined.
3850 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3851 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3852 * fixed compiler failure related to checking types of functions.
3853 (reported by Robert E. Brown)
3854 * the compiler is now much more consistent in its error-checking
3855 treatment of bounding index arguments to sequence functions: in
3856 (SAFETY 3) code, errors will be signalled in almost all cases if
3857 invalid sequence bounding indices are passed to functions defined
3858 by ANSI to operate on sequences.
3859 * fixed a bug in the build procedure: documentation of SBCL-specific
3860 packages is now preserved and available in the final Lisp image.
3861 * lifted FDEFINITION lookup out of loops in the implementation of
3862 many list operations. (thanks to Robert E. Brown)
3863 * fixed a bug in the reader: the #n# reader macro now works for
3864 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3865 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3866 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3867 E. Brown and Tony Martinez respectively)
3868 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3869 SLOT-BOUNDP: in particular, it is now able to optimize them much
3870 better, and is now not vulnerable to having packages renamed.
3871 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3872 always called when a slot is not present in an instance. (thanks
3874 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3875 longer signal an error on unreading a character following EOF on
3876 the previous constituent stream. (thanks to Tony Martinez)
3877 * fixed some bugs revealed by Paul Dietz' test suite:
3878 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3879 not just nonnegative fixnums;
3880 ** the logical bit-array operators such as BIT-AND now accept an
3881 explicit NIL for their "opt-arg" argument (to indicate a
3882 freshly-consed result bit-array);
3883 ** ELT now signals an error on an invalid sequence index in safe
3885 ** the type system is now cleverer about negations of numeric
3886 types, and consequently understands the BIGNUM and RATIO types
3888 ** the type system is now cleverer about the interaction between
3889 INTEGER and RATIO types: while bugs still remain, many more
3890 cases are accurately computed;
3891 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3892 if it is in the last clause;
3893 ** CONSTANTLY now correctly returns a side-effect-free function in
3895 ** DECLARE is no longer treated as a special-operator; in
3896 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3897 * incremented fasl file version number due to the change in the
3898 DEFSTRUCT-SLOT-DESCRIPTION structure.
3900 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3901 * minor incompatible change: code processed by the "interpreter" or
3902 EVAL now has a compilation optimization policy of (DEBUG 2)
3903 (changed from (DEBUG 1)) to improve debuggability of interactive
3904 development, and to allow the use of the debug RETURN command in
3906 * an experimental implementation of the RETURN command for the
3907 debugger has been included. (thanks to Frederik Kuivinen)
3908 * fixed bug 62: constraints were not propagated into a loop.
3909 * fixed bug in embedded calls of SORT (reported and investigated by
3911 * fixed some bugs revealed by Paul Dietz' test suite:
3912 ** printing and reading of arrays with some dimensions having
3913 length 0 (thanks to Gerd Moellmann);
3914 ** BOA constructor with &AUX argument without a default value does
3915 not cause a type error;
3916 ** CONSTANTP now returns true for all self-evaluating objects.
3918 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3919 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3920 accessors that are related by inheritance, as specified in the
3921 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3922 Valtteri Vuorikoski)
3923 * The compiler is now able to inline functions that were defined in
3924 a complex lexical environment (e.g. inside a MACROLET).
3925 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3927 * Support for the upcoming FreeBSD-5.0 release has been included.
3928 (thanks to Dag-Erling Smorgrav)
3929 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3930 effect when it is not in a toplevel context.
3931 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3932 stand a better chance of being correct. (thanks to Gerd
3934 * fixed bug in COERCE, which now signals an error on coercing a
3935 rational to a bounded real type which excludes the expected
3937 * The compiler is now able to derive types more accurately from the
3938 COERCE and COMPILE functions.
3939 * fixed bug 223: functional binding is considered to be constant
3940 only for symbols in the CL package.
3941 * fixed bug 231: SETQ did not check the type of a variable being set
3942 (reported by Robert E. Brown)
3943 * A new optimization for MAKE-INSTANCE has been included, fixing
3944 various bugs (including relating to :ALLOCATION :CLASS slots and
3945 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3947 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3948 ** As required by ANSI, LOOP now disallows anonymous collection
3949 clauses such as COLLECT I in conjunction with aggregate boolean
3950 clauses such as THEREIS (= I 1);
3951 ** LOOP now signals an error when any variable is reused in the
3952 same loop (including the potentially useful construct analogous
3953 to WITH A = 1 WITH A = (1+ A);
3954 ** IT is only a special loop symbol within the first clause of a
3955 conditional loop clause;
3956 ** LOOP with a typed iteration variable over a hashtable now
3957 signals a type error iff it should.
3958 * fixed some other bugs revealed by Paul Dietz' test suite:
3959 ** FILE-STREAM now names the class previously known as FD-STREAM;
3960 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3961 argument) no longer signals an error;
3962 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3963 of the slot symbol, rather than using the current package
3964 ((:CONC-NAME "") continues to intern the slot's name in the
3966 * incremented fasl file version number, because of the incompatible
3967 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3968 of the new implementation of DEFINE-COMPILER-MACRO.
3970 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3971 * Support for building SBCL for MIPS platforms running in
3972 little-endian mode has now been checked in, and basic
3973 functionality on said platforms verified.
3974 * minor incompatible change: PCL now records the pathname of a file
3975 in which methods and the like are defined, rather than its
3977 * minor incompatible change: TRUENAME now considers the truename of
3978 a file naming a directory to be the pathname with :DIRECTORY
3979 component indicating that directory.
3980 * minor incompatible change: a NAMED clause in the extended form of
3981 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3982 reason for the previous behaviour is unclear.
3983 * more systematization and improvement of CLOS and MOP conformance
3984 in PCL (thanks to Gerd Moellman and Pierre Mai):
3985 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3987 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3988 primary methods with no specializers;
3989 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3991 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3992 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3993 FORWARD-REFERENCED-CLASSes; error reporting on
3994 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3996 ** SXHASH on CLOS instances now uses a slot internal to the
3997 instance to return different numbers on distinct instances,
3998 while preserving the same return value through invocations of
4000 ** DEFMETHOD signals errors when methods with longer incongruent
4001 lambda lists are added to generic functions;
4002 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
4003 CLASS, as specified in AMOP;
4004 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
4005 on the order returned by the primary method for classes of
4006 class STANDARD-CLASS;
4007 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
4008 * fixed some bugs shown by Paul Dietz' test suite:
4009 ** DOLIST puts its body in TAGBODY;
4010 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4012 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4013 value producing form;
4014 ** if more variables are given to PROGV than values, extra
4015 variables are bound and made to have no value;
4016 ** NSUBSTITUTE on list arguments gets the right answer with
4018 ** ELT signals an error of type TYPE-ERROR when the index argument
4019 is not a valid sequence index;
4020 ** LOOP signals (at macroexpansion time) an error of type
4021 PROGRAM-ERROR when duplicate variable names are found;
4022 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4023 ** FUNCALL of special-operators now cause an error of type
4025 ** PSETQ now works as required in the presence of side-effecting
4026 symbol-macro places;
4027 ** NCONC accepts any object as its last argument;
4028 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4030 ** loop-for-as-package does not require a package to be explicitely
4032 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4034 * fixed bug 166: compiler preserves "there is a way to go"
4035 invariant when deleting code.
4036 * fixed bug 172: macro lambda lists with required arguments after
4037 &REST arguments now cause an error to be signalled. (thanks to
4039 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4040 bug. (thanks to Matthew Danish)
4041 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4043 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4044 arguments are lexically rebound. (thanks to Gerd Moellmann and
4046 * fixed bug 194: error messages are now more informative when there
4047 is no primary method applicable in a call to a generic
4048 function. (thanks to Gerd Moellmann)
4049 * fixed bug in command line argument checking (thanks to Julian
4051 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4052 (thanks to Matthew Danish)
4053 * incremented fasl file version number, because of the
4054 SXHASH-related changes in the layout of CLOS data structures
4056 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4057 * minor incompatible change: The runtime (the Unix executable named
4058 "sbcl") is now much pickier about the .core files it will load.
4059 Essentially it now requires .core files to descend from the same
4060 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4061 as the runtime does. (The intent is to prevent the crashes which
4062 can occur, and which can even be reported as mysterious failures,
4063 when people patch the sources or change the build parameters
4064 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4065 sbcl and .core files.)
4066 * fixed bug: VALUES-LIST is no longer optimized away.
4067 * fixed bug 142: The FFI conversion of C string values to Lisp
4068 string values no longer conses excessively. (thanks to Nathan
4069 Froyd porting Raymond Toy's fix to CMU CL)
4070 * began to systematize and improve MOP conformance in PCL (thanks to
4071 Nathan Froyd, Gerd Moellman and Pierre Mai):
4072 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4074 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4075 ** FINALIZE-INHERITANCE is now called on class finalization;
4076 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4077 argument precedence order.
4078 * fixed bug 202: The compiler no longer fails on functions whose
4079 derived types contradict their declared type.
4080 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4081 so it can be non-toplevel.
4082 * The fasl file version number has changed (because of the new
4083 implementation of DEFMACRO).
4084 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4085 safe code, that any length requirement by their type-specifier
4086 argument is valid. The exceptions to this are described in bug
4088 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4089 functions now check the types of their inputs as required by ANSI.
4090 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4091 introduced symbol is DECLAREd to be SPECIAL.
4092 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4093 * fixed bug: :COUNT argument to sequence functions may be negative
4094 * fixed bug: body of DO-SYMBOLS may contain declarations
4095 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4096 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4097 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4098 symbol macro only once
4099 * fixed printing of call frame when argument list is unavailable
4100 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4101 * compiler no longer signals WARNING on unknown keyword
4104 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4105 * A beta-quality port to the mips architecture running Linux,
4106 based on the old CMUCL backend, has been made. It has been tested
4107 on a big-endian kernel, and works sufficiently well to be able to
4108 rebuild itself; it has not been tested in little-endian mode.
4109 * fixed an inconsistency between gencgc.c and purify.c which made
4110 dumping/loading .core files unreliable
4111 * fixed bug 120a: The compiler now deals correctly with IFs where
4112 the consequent is the same as the alternative, instead of
4113 misderiving the return type. (thanks to Alexey Dejneka)
4114 * fixed bug 113: Logical pathnames are now dumpable (the logical
4115 host is resolved at load-time, throwing an error if it is not
4117 * fixed bug 174: FORMAT's error message is slightly clearer when a
4118 non-printing character is used in a format directive.
4119 * fixed several bugs in compiler checking of type declarations, i.e.
4120 violations of the Python "declarations are assertions" principle
4121 (thanks to Alexey Dejneka)
4122 * fixed several bugs in PCL's error checking (thanks to Gerd
4124 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4126 * fixed bug in compilation of functions as first class values
4127 (thanks to Antonio Martinez-Shotton)
4128 * The compiler's handling TYPE-ERRORs which it can prove will
4129 inevitably happen at runtime has been cleaned up and corrected
4130 in several ways. (thanks to Alexey Dejneka)
4131 * improved argument type checking for various basic arithmetic
4132 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4133 lavished on them in the past that they can be compiled in many
4134 ways in different special cases
4135 * fixed bug 181: compiler checks validity of user supplied type
4137 * cleaned up code flushing in optimization: Function calls which
4138 should signal errors for safety purposes (e.g. which ANSI says
4139 should signal errors when their arguments are of incorrect type)
4140 are no longer optimized away.
4141 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4142 * incremented fasl file version number, because changes in the
4143 implementation of sequence functions like COERCE caused
4144 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4145 in old inline expansions) to become undefined. (Actually these
4146 changes were later undone, so we might very well be binary
4147 compatible with 0.7.7 after all, but leaving the version number
4148 incremented seemed like the simplest and most conservative
4151 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4152 * An alpha-quality port to the parisc architecture running Linux,
4153 based on the old CMUCL backend, has been made. This, even more so
4154 than the other backends, should be considered still a work in
4155 progress; known problems include that the Linux kernel in 64-bit
4156 mode does not propagate the correct sigcontext structure to
4157 userspace, and consequently SBCL on a parisc64 kernel will not
4159 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4160 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4161 suppressed.) Also now that the compiler is looking at declarations
4162 in the environment, it checks optimization declarations as well,
4163 and suppresses inlining when (> DEBUG SPEED).
4164 * More fixes have been made to treatment of floating point exception
4165 treatment and other Unix signals. In particular, floating point
4166 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4167 * The detection and handling of control stack exhaustion (infinite
4168 or very deeply nested recursion) has changed. Stack exhaustion
4169 detection is now done by write-protecting pages at the OS level
4170 and applies at all optimization settings; when found, a
4171 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4172 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4173 be caught using IGNORE-ERRORS.
4174 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4175 correctly when transforming recursive LABELS functions to LETs.
4176 (thanks to Alexey Dejneka)
4177 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4178 that are names of constants or global variables.
4179 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4180 alien routines with docstrings.
4181 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4182 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4184 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4185 (thanks to Eric Marsden)
4186 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4187 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4188 * Bug fix: The SPARC backend can now compile functions involving
4189 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4190 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4191 to a functions expecting a PATHNAME-DESIGNATOR.
4192 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4193 lambda lists. (thanks to Alexey Dejneka)
4194 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4195 functions so that EXPORTing the name of the class doesn't cause
4196 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4197 to Antonio Martinez for reporting this)
4198 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4199 constant-folded without failing an assertion. (thanks to Einar
4200 Floystad Dorum for reporting this)
4201 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4202 types are now dealt with more correctly by the compiler.
4203 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4204 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4205 behaviour analogous to RENAME-FILE. This puts its behaviour more
4206 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4208 * The fasl file version number has changed again. (because of the
4209 bug fix involving the names of PCL MAKE-INSTANCE functions)
4211 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4212 * bug fix: Floating point exceptions are treated much more
4213 consistently on the x86/Linux and PPC/Linux platforms.
4214 * Array initialization with :INITIAL-ELEMENT is now much faster for
4215 cases when the compiler cannot open code the array creation, but
4216 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4217 array accesses have also seen a speed increase.
4218 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4219 specified. (This was at the root of some bad interactions between
4220 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4222 * bug fix: Internal error arguments for undefined functions are now
4223 computed correctly on the PPC/Linux platform.
4224 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4225 Raymond Toy's patch for CMU CL)
4226 * Support for the Solaris 9 operating environment has been included
4227 (thanks to Daniel Merritt)
4228 * A very ugly but hopefully complete draft of the missing FFI chapter
4229 of the manual has been created by reformatting the corresponding
4230 CMU CL manual chapter into (currently very ugly and incoherent)
4231 DocBook and bringing it up to date for SBCL behavior. Thus, the
4232 manual is now essentially complete, at least by my extreme
4233 once-and-only-once standards, whereby it's acceptable to refer to
4234 the doc strings of SB-EXT functions as the primary documentation.
4235 * The fasl file version number has changed again, due to cleanup of
4236 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4237 is no longer a static symbol.)
4239 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4240 * SBCL now builds with OpenMCL (version 0.12) as the
4241 cross-compilation host; also, more progress has been made toward
4242 bootstrapping under CLISP.
4243 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4245 * bug 158 fixed: The compiler can now deal with integer loop
4246 increments different from 1; fixing this turned out also to fix
4248 * bug 169 fixed: no more bogus warnings about using lexical bindings
4249 despite the presence of perfectly good SPECIAL declarations (thanks
4250 to David Lichteblau)
4251 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4252 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4253 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4255 * bug 180 fixed: Method combination specifications no longer ignore
4256 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4257 * bug fix: Structure type predicate functions now check their argument
4258 count as they should.
4259 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4260 correctly. (thanks to Pierre Mai)
4261 * minor incompatible change: The --noprogrammer option is deprecated
4262 in favor of the new --disable-debugger option, which is very similar.
4263 (The major difference is that it takes effect at a slightly different
4264 time at startup, causing handling of errors in --sysinit and
4265 --userinit files will be affected differently.) The
4266 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4267 been added to allow this functionality to be controlled from ordinary
4268 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4269 maintainers, who might want to run non-interactive scripts to
4270 build SBCL cores which will later be used interactively.)
4271 * minor incompatible change: The LOAD function no longer, when given
4272 a wild pathname to load, loads all files matching that pathname.
4273 Instead, an error of type FILE-ERROR is signalled.
4275 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4276 * bug 147 fixed: The compiler preserves its block link/count
4277 invariants more correctly now so that it doesn't crash. (thanks
4279 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4281 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4282 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4283 no-value-for-this-character as NIL (as specified by ANSI).
4284 * HOST-NAMESTRING on physical pathnames now returns a string that is
4285 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4286 (thanks to Christophe Rhodes)
4287 * The Alpha port handles icache flushing more correctly. (thanks to
4289 * More progress has been made toward bootstrapping under CLISP. (thanks
4290 to Christophe Rhodes)
4291 * The fasl file format has changed again, because dynamic loading
4292 on OpenBSD (which has non-ELF object files) motivated some cleanups
4293 in the way that foreign symbols are transformed and passed around.
4294 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4295 is no longer treated as whitespace by the reader, but instead as
4296 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4297 |A
\7fB|, instead of A as it used to.
4299 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4300 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4301 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4302 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4303 this as of 0.7.1.45, but was left out of the previous news section
4304 (thanks to Dan Barlow)
4305 * SBCL now runs on the Solaris operating system on SPARC architectures
4306 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4307 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4308 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4309 * SPARC backend cleanups, allowing builds of cores optimized for V8
4310 and V9 SPARCS, and also emission of code targeted to a particular
4311 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4313 * SBCL is closer to bootstrapping under CLISP, thanks to various
4314 fixes by Christophe Rhodes.
4315 * The fasl file format has changed again, to allow the compiler's
4316 INFO database to support symbol macros.
4317 * The user manual (in doc/) is formatted into HTML more nicely.
4318 (thanks to coreythomas)
4319 * The system is smarter about SUBTYPEP relationships, especially
4320 those involving NOT types (including types such as ATOM which are
4321 represented internally using NOT types). Thus SUBTYPEP is less
4322 likely to return (VALUES NIL NIL) in general, and in particular
4323 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4325 * The fasl file format has changed again, because the internal
4326 representation of types now includes a new slot to support the new
4327 SUBTYPEP-of-NOT-types logic.
4328 * (not a change in the main branch of SBCL, but a related prototype
4329 which can hopefully be merged into the main branch of SBCL in the
4330 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4331 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4332 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4333 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4334 dispatch macro character combinations. (thanks to Alexey Dejneka)
4335 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4336 that superficially look like logical namestrings correctly.
4337 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4339 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4340 default supplied-p) for &optional and &key arguments. (thanks to
4343 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4344 * incompatible change: The compiler is now less aggressive about
4345 tail call optimization, doing it only when (> SPACE DEBUG) or
4346 (> SPEED DEBUG). (This is an incompatible change because there are
4347 programs which relied on the old CMU-CL-style behavior to optimize
4348 away their unbounded recursion which will now die of stack overflow.)
4349 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4350 for non-GENCGC systems has been increased to 20M (since that
4351 seems much closer to the likely performance optimum for modern
4352 systems than the old 4M value was)
4353 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4354 and *DEBUG-PRINT-LEVEL*
4355 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4356 of CMU CL's support for SPARC, and various endianness and other
4357 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4358 * new syntactic sugar for the Unix command line: --load foo.bar is now
4359 an alternate notation for --eval '(load "foo.bar")'.
4361 ** The system now detects stack overflow and handles it gracefully,
4362 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4363 optimization settings. (This is a good thing in general, and
4364 its introduction in this version should be particularly timely
4365 for anyone whose code fails because of suppression of tail
4367 ** The system now hunts for the C variable "environ" in a more
4368 devious way, to avoid segfaults when the C library version differs
4369 between compile time and run time. (thanks to Christophe Rhodes)
4370 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4371 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4372 ** The compiler no longer issues bogus style warnings for undefined
4373 classes in the same source file as the DEFCLASSes which defined
4374 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4376 ** fixes in CONDITION class precedence list for undefined function
4377 errors (thanks to Alexei Dejneka)
4378 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4379 correctly. (thanks to Dan Barlow)
4380 ** portability fixes aiming at bootstrapping under CLISP (thanks
4381 to Dave McDonald and Christophe Rhodes)
4382 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4383 ** fixes in type translation and and type inference (thanks to
4385 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4386 ** various fixes in the new ports (thanks to Dan Barlow)
4387 * several changes related to debugging:
4388 ** suppression of tail recursion, as noted above
4389 ** stack overflow detection, as noted above
4390 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4391 is now the default. (For some time encapsulation has been more
4392 reliable than the breakpoint-based :ENCAPSULATE NIL
4393 implementation, at least on X86 systems; and I just noticed that
4394 encapsulation also seems closer to the spirit of the ANSI
4397 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4399 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4400 up properly again. (There was a packaging bug in 0.7.0 which
4401 left their definitions in SB-SYS::LOAD-FOREIGN and
4402 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4403 vital for most things which interface to C-level interfaces,
4404 like extensions working with sockets or databases or
4405 Perl-compatible regexes or whatever, and the need to fix
4406 this bug is the main reason that 0.7.1 was released so
4408 ** DEFGENERIC is now choosier about the methods it redefines, so that
4409 reLOADing a previously-LOADed file containing DEFGENERICs does
4410 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4411 cycle now works as it should. (thanks to Alexey Dejneka)
4412 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4413 fixed by Christophe Rhodes. (He actually submitted this patch
4414 months ago, and I delayed until after 0.7.0.)
4415 ** Bug 111 (internal compiler confusion about runtime checks on
4416 FUNCTION types) was fixed by Alexey Dejneka.
4417 * Some internal cleanups (getting rid of variables which aren't
4418 needed now that the byte interpreter is gone) caused the fasl
4419 file format number to change again.
4421 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4422 * major incompatible change: The default fasl file extension, i.e. the
4423 default extension for files produced by COMPILE-FILE, has changed
4424 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4426 ** There are many changes in the implementation of the compiler.
4427 SBCL is now essentially a compiler-only implementation of ANSI
4428 Common Lisp. EVAL still "interprets" a few special cases, but
4429 almost all the interesting cases are handled by creating
4430 a LAMBDA expression, calling COMPILE on it, then calling
4431 FUNCALL on the result.
4432 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4433 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4434 Since the code is newer, there might still be some new bugs
4435 (though not as many as before Martin Atzmueller's fixes:-). But
4436 the new code is substantially simpler and clearer, and hopefully
4437 any remaining bugs will be simpler, less fundamental, and more
4438 fixable then the bugs in the old code.
4439 ** The revised compiler is still a little unsteady on its feet.
4441 *** The debugging information it produces (particularly the names
4442 of FUNCTION objects) is sometimes much less useful than what
4443 the old compiler produced.
4444 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4445 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4446 within a MACROLET) has been temporarily weakened.
4447 ** There are new compiler optimizations for various functions:
4448 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4449 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4450 *** the math functions TRUNCATE, FLOOR, and CEILING
4451 *** the function-of-all-trades COERCE
4452 Mostly these should be transparent, but there's one
4453 potentially-annoying problem (bug 117): when the compiler
4454 inline-expands a function and does type analysis on the result,
4455 it can create control paths which have type mismatches, and
4456 when it can't prove that those control paths aren't taken,
4457 it will issue WARNINGs about the type mismatches. This is
4458 a particular problem in practice for the new sequence functions.
4459 It's not clear how this should be fixed, and for now, a
4460 workaround is given in the entry for 117 in the BUGS file.
4461 ** (Because of the interaction between the two previous items --
4462 occasional inlining problems and new inline expansions -- some
4463 of the new sequence function optimizations won't really kick in
4464 completely until debugging information, and then inlining, are
4465 straightened out in some future version.)
4466 * minor incompatible changes:
4467 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4468 DIRECTORY no longer implicitly promotes NIL slots of its
4469 pathname argument to :WILD. In particular, when you ask for the
4470 contents of a directory (which you used to be able to do without
4471 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4472 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4473 ** changes in behavior that ANSI explicitly defines to be
4474 implementation dependent:
4475 *** The new compiler-only implementation still conforms with ANSI,
4476 but acts a little different than before. Besides the obvious
4477 changes in performance tradeoffs (that the cost per form passed
4478 to EVAL has gone up, and the cost per form executed by EVAL
4479 has gone down), the behavior of the system changes a little
4480 because there are no longer any interpreted function objects.
4481 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4482 e.g. doing COMPILE on the output of interactive DEFUN is
4484 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4486 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4487 has changed from (:CL) to NIL.
4488 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4489 e.g. #\Newline and #\Tab, don't have names specified in the
4490 ANSI Common Lisp standard, is now based on their ASCII symbolic
4491 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4492 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4493 are no longer used for output.
4494 ** changes in internal implementation constants:
4495 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4496 4 million. (If your application spends a lot of time GCing and
4497 you have a lot of RAM, you might want to experiment with
4498 increasing it even more.)
4499 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4500 However, almost all old code should still continue to work without
4501 immediate update, as SB-C-CALL is now a (deprecated) nickname
4503 ** Old operator names in the style DEF-FOO are now deprecated in
4504 favor of new corresponding names DEFINE-FOO, for consistency with
4505 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4506 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4507 internal symbols, but a few supported extensions like
4508 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4509 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4510 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4511 etc. as you get deeper into recursive calls to the debugger
4512 command loop, instead of the old "5]", "5]]", "5]]]"
4513 sequence. (I was motivated to do this when squabbles between
4514 ILISP and SBCL left me very deeply nested in the debugger. In the
4515 short term, this change will probably provoke more ILISP/SBCL
4516 squabbles, but hopefully it will be an improvement in the long run.)
4517 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4518 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4519 function, since declaiming return types involving aliens is
4520 (1) annoyingly messy to do by hand and (2) vital to efficient
4521 compilation of code which calls such functions.
4522 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4523 longer reexported by the SB-EXT package. They're solely useful
4524 for alien code, so it seems more logical that you should get
4525 them from the SB-ALIEN package, not in SB-EXT.
4526 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4527 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4528 features. Instead, the code that they used to control is always
4529 built into the system.
4530 * many other bug fixes
4531 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4532 advantage of the new EVAL-WHEN stuff and to clean them up in
4533 general, and they are now more ANSI-compliant in a number of
4534 ways. Martin Atzmueller is responsible for a lot of this.
4535 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4537 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4538 *** correct ERROR type for various file operations
4539 *** some fixes for Lisp streams
4540 *** DEFMETHOD syntax checking
4541 *** changing old weird representation of debug information as
4542 strings (which, among their other deficiencies, don't transform
4543 correctly when you rename packages, and don't change their
4544 print representation when you change things like *PACKAGE*
4545 and *PRINT-LENGTH*) to symbols and lists of symbols
4546 He also made several improvements and fixed several bugs in DESCRIBE.
4547 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4549 *** misbehavior of WRITE-STRING/WRITE-LINE
4550 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4551 and several other LOOP problems as well
4552 *** DIRECTORY when similar filenames are present
4553 *** DEFGENERIC with :METHOD options
4554 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4555 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4556 *** argument ordering in FIND with :TEST option
4557 *** mishandled package designator argument in APROPOS-LIST
4558 *** various problems in the backquote readmacro
4559 *** a bug in APROPOS
4560 *** probably some others that I'm not describing very well here,
4561 since the CVS log documents them by reference to sbcl-devel
4562 messages, and the SourceForge archives aren't working well.:-(
4563 ** Dan Barlow improved the Alpha port (and is making progress on the
4564 PPC port, for those of you who think different).
4565 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4566 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4567 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4568 continues to work on the SPARC port (for those of you in a position
4569 to look down upon our little PC-compatible boxes from a great height).
4570 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4571 and uses that copy, rather than the current dynamic value, when
4572 it's trying to decide whether to truncate output. Thus e.g.
4573 (let ((*print-lines* 50))
4574 (pprint-logical-block (stream nil)
4576 (let ((*print-lines* 8))
4577 (print (aref possiblybigthings i) stream)))))
4578 should now truncate the logical block only at 50 lines, instead of
4579 often truncating it at 8 lines, as it did before.
4580 * The doc/cmucl/ directory, containing old CMU CL documentation
4581 from the time of the fork, is no longer part of the base system.
4582 SourceForge has shut down its anonymous FTP service, and with it
4583 my original plan for distributing the old CMU CL documentation
4584 there. For now, if you need these files you can download an old
4585 SBCL source release and extract them from it.
4586 * The fasl file version number changed again, for dozens of reasons,
4587 some of which are apparent above.
4589 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4590 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4591 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4592 patch, so that DISASSEMBLE output is much nicer.
4593 * The code in the SB-PROFILE package now seems reasonably stable.
4594 I still haven't decided what the final interface should look like
4595 (I'd like PROFILE to interact cleanly with TRACE, since both
4596 facilities use function encapsulation) but if you have a need
4597 for profiling now, you can probably use it successfully with
4598 the current CMU-CL-style interface.
4599 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4600 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4601 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4602 link now returns the dangling link itself, and for similar
4603 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4604 link itself. (In these cases the old code signalled an error and
4605 looped endlessly, respectively.) Thus, DIRECTORY now works even
4606 in the presence of dangling and cyclic symbolic links.
4607 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4608 is now a supported extension again, since the consensus on
4609 sbcl-devel was that it can be useful for ordinary development
4610 work, not just for debugging SBCL itself.
4611 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4612 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4613 that currently-defined functions might be redefined later with
4614 different return types.
4615 * Hash tables can be printed readably, as inspired by CMU CL code
4616 of Eric Marsden and SBCL code of Martin Atzmueller.
4617 * better error handling in CLOS method combination, thanks to
4618 Martin Atzmueller porting Pierre Mai's CMU CL patches
4619 * more overflow fixes for >16Mbyte I/O buffers
4620 * A bug in READ has been fixed, so that now a single Ctrl-D
4621 character suffices to cause end-of-file on character streams.
4622 In particular, now you only need one Ctrl-D at the command
4623 line (not two) to exit SBCL.
4624 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4626 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4627 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4628 does the right thing.
4629 * The implementation of some type tests, especially for CONDITION
4630 types, is now tidier and maybe faster, due to CMU CL code
4631 originally by Douglas Crosher, ported by Martin Atzmueller.
4632 * Some math functions have been fixed, and there are new
4633 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4634 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4635 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4636 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4637 likely to be built into sbcl-0.7.0.)
4638 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4639 CL, ported to SBCL by Martin Atzmueller)
4640 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4641 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4642 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4643 * There's a new slam.sh hack to shorten the edit/compile/debug
4644 cycle for low-level changes to SBCL itself, and a new
4645 :SB-AFTER-XC-CORE target feature to control the generation of
4646 the after-xc.core file needed by slam.sh.
4647 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4648 COMPILE-FILE is no longer supported, so that now every function
4649 gets an entry point, so that block compilation looks a little
4650 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4651 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4652 returns the number of bytes consed since the system started,
4653 rather than the number consed since the first time the function
4654 was called. (The new definition parallels ANSI functions like
4655 CL:GET-INTERNAL-RUN-TIME.)
4656 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4657 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4658 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4659 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4660 * Fasl file version numbers are now independent of the target CPU,
4661 since historically most system changes which required version
4662 number changes have affected all CPUs equally. Similarly,
4663 the byte fasl file version is now equal to the ordinary
4666 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4667 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4668 is no longer recognized. I apologize for this, because it was
4669 listed in SB-EXT as a supported extension, but I found that
4670 its existing behavior was poorly specified, as well as incorrectly
4671 specified, and it looked like too much of a mess to straighten it
4672 out. I have enough on my hands trying to get ANSI stuff to work..
4673 * many patches ported from CMU CL by Martin Atzmueller, with
4674 half a dozen bug fixes in pretty-printing and the debugger, and
4675 half a dozen others elsewhere
4676 * fixed bug 13: Floating point infinities are now supported again.
4677 They might still be a little bit flaky, but thanks to bug reports
4678 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4679 as flaky as they were.
4680 * The --noprogrammer command line option is now supported. (Its
4681 behavior is slightly different in detail from what the old man
4682 page claimed it would do, but it's still appropriate under the
4683 same circumstances that the man page talks about.)
4684 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4685 are now supported, and enabled by default. Thus, the compiler can
4686 handle many floating point and complex operations much less
4687 inefficiently. (Thus e.g. you can implement a complex FFT
4689 * The compiler now detects type mismatches between DECLAIM FTYPE
4690 and DEFUN better, and implements CHECK-TYPE more correctly, and
4691 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4692 thanks to patches from Martin Atzmueller.
4693 * various fixes to make the cross-compiler more portable to
4694 ANSI-conforming-but-different cross-compilation hosts (notably
4695 Lispworks for Windows, following bug reports from Arthur Lemmens)
4696 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4697 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4698 fixed thanks to Pierre Mai's CMU CL patches.
4699 * fixes to keep the system from overflowing internal counters when
4700 it tries to use i/o buffers larger than 16M bytes
4701 * fixed bug 45a: Various internal functions required to support
4702 complex special functions have been merged from CMU CL sources.
4703 (When I was first setting up SBCL, I misunderstood a compile-time
4704 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4705 * improved support for type intersection and union, fixing bug 12
4706 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4707 more obscure bugs as well
4708 * some steps toward byte-compiling non-performance-critical
4709 parts of the system, courtesy of patches from Martin Atzmueller
4710 * Christophe Rhodes has made some debian packages of sbcl at
4711 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4712 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4713 stable, but are nonetheless usable. When he's ready, I'd be happy
4714 to add them to the SourceForge "File Releases" section. (And if
4715 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4716 * new fasl file format version number (because of changes in
4717 internal representation of (OR ..) types to accommodate the new
4718 support for (AND ..) types, among other things)
4720 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4721 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4723 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4725 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4726 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4727 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4728 * DESCRIBE now works on structure objects again.
4729 * Most function call argument type mismatches are now handled as
4730 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4731 know whether the function will be redefined before the call is
4732 executed. (The compiler could flag local calls with full WARNINGs,
4733 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4734 it doesn't keep track of enough information to know whether calls
4735 are local in this sense.)
4736 * Compiler output is now more verbose, with messages truncated
4737 later than before. (There should be some supported way for users
4738 to override the default verbosity, but I haven't decided how to
4739 provide it yet, so this behavior is still controlled by the internal
4740 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4741 src/compiler/ir1util.lisp.)
4742 * Fasl file format version numbers have increased again, because
4743 support for the Gray streams extension changes the layout of the
4744 system's STREAM objects.
4745 * The Gray subclassable streams extension now works, thanks to a
4746 patch from Martin Atzmueller.
4747 * The full LOAD-FOREIGN extension (not just the primitive
4748 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4749 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4750 but like most other programs, it defaults to copying the Unix
4751 environment from the original process instead of starting the
4752 new process in an empty environment.
4753 * Extensions which manipulate the Unix environment now support
4754 an :ENVIRONMENT keyword option which doesn't smash case or
4755 do other bad things. The CMU-CL-style :ENV option is retained
4756 for porting convenience.
4757 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4758 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4760 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4762 * A patch from Martin Atzmueller seems to have solved the SIGINT
4763 problem, and as far as we know, signal-handling now works cleanly.
4764 (If you find any new bugs, please report them!)
4765 * The system no longer defaults Lisp source file names to types
4766 ".l", ".cl", or ".lsp", but only to ".lisp".
4767 * The compiler no longer uses special default file extensions for
4768 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4769 seems to expect a single default extension for all compiled code,
4770 and there's no compelling reason to try to stretch the standard
4771 to allow two different extensions.) Instead, byte-compiled files
4772 default to the same extension as native-compiled files.
4773 * Fasl file format version numbers have increased again, because
4774 a rearrangement of internal implementation packages made some
4775 dumped symbols in old fasl files unreadable in new cores.
4776 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4777 many fewer weird special cases.
4778 * Bug #17 (differing COMPILE-FILE behavior between logical and
4779 physical pathnames) has been fixed, and some related misbehavior too,
4780 thanks to a patch from Martin Atzmueller.
4781 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4782 by Tim Moore, ported to SBCL by Martin Atzmueller.
4783 * Martin Atzmueller fixed several filesystem-related problems,
4784 including bug #36, in part by porting CMU CL patches, which were
4785 written in part by Paul Werkowski.
4786 * More compiler warnings in src/runtime/ are gone, thanks to
4787 more patches from Martin Atzmueller.
4788 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4791 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4793 * DESCRIBE now works on CONDITION objects.
4794 * The debugger now handles errors which arise when trying to print
4795 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4797 * The build system now uses an additional file, customize-target-features.lisp,
4798 to allow local modifications to the target *FEATURES* list. (The point of
4799 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4800 debugging features enabled, without having to worry about propagating it
4801 into everyone's system when I do a "cvs update".) When no
4802 customize-target-features.lisp file exists, the target *FEATURES* list
4803 should be constructed the same way as before.
4804 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4805 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4806 warn about behavior which is undefined under the ANSI spec. Note: This
4807 is specified by ANSI, but it's not very popular with programmers.
4808 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4809 macro in the SBCL sources for an example of a workaround which you
4810 might use to make portable ANSI-standard code which does what you want.
4811 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4812 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4813 when it's used as a non-toplevel form. (This is required in order
4814 to implement the DEFCONSTANT-EQX macro.)
4815 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4816 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4817 funny things, due to bugs in the implementation of EVAL-WHEN
4818 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4819 non-toplevel DEFCONSTANTs are uncommon.)
4820 * The core file version number and fasl file version number have been
4821 incremented, because the old noncompliant DEFCONSTANT behavior involved
4822 calling functions which no longer exist, and because I also took the
4823 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4824 * fixed bug 1 (error handling before read-eval-print loop starts), and
4825 redid debugger restarts and related debugger commands somewhat while
4827 ** The QUIT debugger command is gone, since it did something
4828 rather different than the SB-EXT:QUIT command, and since it never
4829 worked properly outside the main toplevel read/eval/print loop.
4830 Invoking the new TOPLEVEL restart provides the same functionality.
4831 ** The GO debugger command is also gone, since you can just invoke
4832 the CONTINUE restart directly instead.
4833 ** The TOP debugger command is also gone, since it's redundant with the
4834 FRAME 0 command, and since it interfered with abbreviations for the
4836 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4838 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4839 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4840 some porting work by Martin Atzmueller)
4841 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4842 with a boatload of patches which he ported to SBCL. Now that those
4844 ** The system tries to make sure that its low-priority messages
4845 are prefixed by semicolons, to help people who like to use
4846 syntax highlighting in their ILISP buffer. (This patch
4847 was originally due to Raymond Toy.)
4848 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4849 patches originally written by Raymond Toy.
4850 ** The compiler understands coercion between single-value and
4851 multiple-VALUES type expressions better, getting rid of some very
4852 weird behavior, thanks to patches originally by Robert MacLachlan
4853 and Douglas Crosher.
4854 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4855 lambda lists, thanks to a patch originally by Pierre Mai.
4856 ** The system no longer bogusly warns about "abbreviated type
4858 ** The compiler gets less confused by inlining and RETURN-FROM,
4859 thanks to some patches originally by Tim Moore.
4860 ** The system no longer hangs when dumping circular lists to fasl
4861 files, thanks to a patch originally from Douglas Crosher.
4862 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4863 undefined function error.
4864 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4865 in structure slot initforms) for now, documented workaround instead:-|
4866 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4867 * fixed bug 5: added stubs for various Gray stream functions called
4868 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4869 installed, at least appropriate type errors are generated
4870 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4871 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4872 consistently in DEFMETHOD forms.
4873 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4874 it doesn't seem to affect SBCL after all
4875 * The C runtime system now builds with better optimization and many
4876 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4878 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4880 * The system is now under CVS at SourceForge (instead of the
4881 CVS repository on my home machine).
4882 * The new signal handling code has been tweaked to treat register
4883 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4884 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4885 downstream, e.g. in debug-int.lisp, has implicit dependencies
4886 on the unsignedness of integer representation of machine words,
4887 and that caused the system to bomb out with infinite regress
4888 when trying to recover from type errors involving signed values,
4889 e.g. (BUTLAST '(1 2 3) -1).)
4890 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4891 (This was one of the bugs Peter Van Eynde reported back in July.)
4892 * The system now uses code inspired by Colin Walters' O(N)
4893 implementation of MAP (from the cmucl-imp@cons.org mailing
4894 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4895 inline the MAP operation, and there is more than one
4896 sequence argument to the MAP call (so that it can't just
4897 do ETYPECASE once and for all based on the type of the
4898 single sequence argument). (The old non-inline implementation
4899 of the general M-argument sequence-of-length-N case required
4900 O(M*N*N) time when any of the sequence arguments were LISTs.)
4901 * The QUIT :UNIX-CODE keyword argument has been renamed to
4902 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4903 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4905 * Raymond Wiker's patches to port dynamic loading from Linux to
4906 FreeBSD have been added.
4907 * The BUGS file is now more nearly up to date, thanks in large part
4908 to Martin Atzmueller's review of it.
4909 * The debugger now flushes standard output streams before it begins
4910 its output ("debugger invoked" and so forth).
4911 * The core version number and fasl file version number have both
4912 been incremented, because of incompatible changes in the layout
4914 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4915 used to not be called for a saved Lisp image.)
4916 * Martin Atzmueller's version of a patch to fix a compiler crash,
4917 as posted on sbcl-devel 13 September 2000, has been installed.
4918 * Instead of installing Martin Atzmueller's patch for the
4919 compiler transform for SUBSEQ, I deleted the compiler transform,
4920 and transforms for some similar consing operations.
4921 * A bug in signal handling which kept TRACE from working on OpenBSD
4923 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4924 away by constant folding
4925 * The system now defines its address space constants in one place
4926 (in the Lisp sources), and propagates them automatically elsewhere
4927 (through GENESIS and the sbcl.h file). Therefore, patching the
4928 address map is less unnecessarily tedious and error-prone. The
4929 Lisp names of address space constants have also been systematized.
4930 * CVS tags like dollar-Header-dollar have been removed from
4931 the sources, because they have never saved me trouble and
4932 they've been source of trouble working with patches and other
4933 diff-related operations.
4934 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4935 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4937 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4939 * The system has been ported to OpenBSD.
4940 * The system now compiles with a simple "sh make.sh" on the systems
4941 that it's supported on. I.e., now you no longer need to tweak
4942 text in the target-features.lisp-expr and symlinks in src/runtime/
4943 by hand, the make.sh takes care of it for you.
4944 * The system is no longer so grossly inefficient when compiling code
4945 involving vectors implemented as general (not simple) vectors (VECTOR T),
4946 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4947 which dares to use the various sequence functions on non-simple
4948 vectors, takes less of a performance hit.
4949 * There is now a primitive type predicate VECTOR-T-P
4950 to test for the (VECTOR T) type, so that e.g.
4951 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4952 can now be compiled with some semblance of efficiency. (The old code
4953 turned the type declaration into a full call to %TYPEP at runtime!)
4954 * AREF on (VECTOR T) is still not fast, since it's still compiled
4955 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4956 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4957 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4958 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4959 without making full calls to SUBTYPEP at runtime.
4960 (Some analogous efficiency issues for non-simple vectors specialized to
4961 element types other than T, or for non-simple multidimensional arrays,
4962 have not been addressed. They could almost certainly be handled the
4963 same way if anyone is motivated to do so.)
4964 * The changes in array handling break binary compatibility, so
4965 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4966 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4967 instead of (VALUES T T).
4968 * By following the instructions that Dan Barlow posted to sbcl-devel
4969 on 2 July 2000, I was able to enable primitive dynamic object
4970 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4971 functionality is not implemented (since it calls ld to resolve
4972 library references automatically, requiring RUN-PROGRAM for its
4973 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4974 try to resolve library references) is now supported.
4975 * The system now flushes the standard output streams when it terminates,
4976 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4977 them at several other probably-convenient times, e.g. in each pass of
4978 the toplevel read-eval-print loop, and after evaluating a form given
4979 as an "--eval" command-line option. (These changes were motivated by a
4980 discussion of stream flushing issues on cmucl-imp in August 2000.)
4981 * The source transform for TYPEP of array types no longer assumes
4982 that an array whose element type is a not-yet-defined type
4983 is implemented as an array of T, but instead punts, so that the
4984 type will be interpreted at runtime.
4985 * There is now some support for cross-compiling in make.sh: each of
4986 the phases of make.sh has its own script. (This should be transparent
4987 to people doing ordinary, non-cross-compile builds.)
4988 * Since my laptop doesn't have hundreds of megabytes of memory like
4989 my desktop machine, I became more motivated to do some items on
4990 my to-do list in order to reduce the size of the system a little:
4991 ** Arrange for various needed-only-at-cold-init things to be
4992 uninterned after cold init. To support this, those things have
4993 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4994 symbols with such names are now uninterned after cold init).
4995 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4996 fasl files for cold load.
4997 ** Remove the old compiler structure pooling code (which used to
4998 be conditional on the target feature :SB-ALLOC) completely.
4999 ** Redo the representation of some data in cold init to be more compact.
5000 (I also looked into supporting byte compiled code at bootstrap time,
5001 which would probably reduce the size of the system a lot, but that
5002 looked too complicated, so I punted for now.)
5003 * The maximum signal nesting depth in the src/runtime/ support code has
5004 been reduced from 4096 to 256. (I don't know any reason for the very
5005 large old value. If the new smaller value turns out to break something,
5006 I'll probably just bump it back up.)
5007 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5009 * Many, many bugs reported by Peter Van Eynde have been added to
5010 the BUGS list; some have even been fixed.
5011 * While enabling dynamic object file loading, I tried to make the
5012 code easier to understand, renaming various functions and variables
5013 with less ambiguous names, and changing some function calling
5014 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5015 * While trying to figure out how to do the OpenBSD port, I tried to
5016 clean up some of the code in src/runtime/. In particular, I dropped
5017 support for non-POSIX signal handling, added various comments,
5018 tweaked the code to reduce the number of compilation warnings, and
5019 renamed some files to increase consistency.
5020 * To support the new automatic configuration functionality in make.sh,
5021 the source file target-features.lisp-expr has been replaced with the
5022 source file base-target-features.lisp-expr and the machine-generated
5023 file local-target-features.lisp-expr.
5024 * fixed a stupid quoting error in make.sh so that using CMU CL
5025 "lisp -batch" as cross-compilation host works again
5027 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5029 * DESCRIBE no longer tries to call itself recursively to describe
5030 bound/fbound values, so that it no longer fails on symbols which are
5031 bound to themselves (like keywords, T, and NIL).
5032 * DESCRIBE now works on generic functions.
5033 * The printer now prints less-screwed-up representations of closures
5034 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5035 * A private symbol is used instead of the :EMPTY keyword previously
5036 used to mark empty slots in hash tables. Thus
5037 (DEFVAR *HT* (MAKE-HASH-TABLE))
5038 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5039 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5040 now does what ANSI says that it should. (You can still get
5041 similar noncompliant behavior if bang on the hash table
5042 implementation with all the symbols you get back from
5043 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5044 This breaks binary compatibility, since tests for equality to
5045 :EMPTY are wired into things like the macroexpansion of
5046 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5048 * There's now a minimal placeholder implementation for CL:STEP,
5049 as required by ANSI.
5050 * An obscure bug in the interaction of the normal compiler, the byte
5051 compiler, inlining, and structure predicates has been patched
5052 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5053 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5055 * Missing ordinary arguments in a macro call are now detected even
5056 when the macro lambda list contains &KEY or &REST.
5057 * The debugger no longer complains about encountering the top of the
5058 stack when you type "FRAME 0" to explicitly instruct it to go to
5059 the top of the stack. And it now prints the frame you request even
5060 if it's the current frame (instead of saying "You are here.").
5061 * As specified by ANSI, the system now always prints keywords
5062 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5064 * The default initial SIZE of HASH-TABLEs is now smaller.
5065 * Type information from CLOS class dispatch is now propagated
5066 into DEFMETHOD bodies, so that e.g.
5067 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5069 is now basically equivalent to
5070 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5071 (DECLARE (TYPE SINGLE-FLOAT X))
5073 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5074 operation, without having to do run-time type dispatch.
5075 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5076 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5077 * Since I don't seem to be making big file reorganizations very often
5078 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5079 is overflowing my ability to conveniently back them up), I've finally
5080 checked the system into CVS. (The CVS repository is on my home system,
5081 not at SourceForge -- putting it on SourceForge might come later.)
5082 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5083 high-level GC-NOTIFY-FOO functions send their output. (There's
5084 still very little control of where low-level verbose GC functions
5085 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5086 less than it used to -- the GC-NOTIFY-FOO functions are now under
5087 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5088 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5089 in only one place in the source code, and propagates it automatically
5090 everywhere that it's needed. Thus e.g. when I bump the version from
5091 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5092 * The C source files now include boilerplate legalese and documentation
5093 at the head of each file (just as the Lisp source files already did).
5094 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5095 to his page will be replaced with a link to his new CLiki service.
5097 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5099 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5100 * The build process now looks for GNU make under the default name "gmake",
5101 instead of "make" as it used to. If GNU make is not available as "gmake"
5102 on your system, you can change this default behavior by setting the
5103 GNUMAKE environment variable.
5104 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5105 can build without error under CMU CL.
5107 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5109 * There is now a partial SBCL user manual (with some new text and some
5110 text cribbed from the CMU CL manual).
5111 * The beginnings of a profiler have been added (starting with the
5112 CMU CL profiler and simplifying and cleaning up). Eventually the
5113 main interface should be through the TRACE macro, but for now,
5114 it's still accessed through vaguely CMU-CL-style functions and macros
5115 exported from the package SB-PROFILE.
5116 * Some problems left over from porting CMU CL to the new
5117 cross-compilation bootstrap process have been cleaned up:
5118 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5119 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5120 part when getting rid of the compiler *BACKEND* stuff.)
5121 ** The value of *NULL-TYPE* was screwed up, because it was
5122 being initialized before the type system knew the final
5123 definition of the 'NULL type. This screwed up several key
5124 optimizations in the compiler, causing inefficiency in all sorts
5125 of places. (I found it because I wanted to understand why
5126 GET-INTERNAL-RUN-TIME was consing.)
5127 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5128 PROCLAIM FTYPE information. Unfortunately this broke binary
5129 compatibility again, since now the forms output by DEFGENERIC
5130 to refer to functions which didn't exist in 0.6.3.
5131 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5132 can use the new (as of 0.6.3) transform for SOME into MAP into
5134 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5135 values to (INTEGER 0 1000000), so that the time code will no longer
5136 occasionally get blown up by Linux returning 1000000 microseconds
5137 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5138 its output conform to the ANSI spec. (Alas, this makes its output
5139 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5140 * A full call to MAP NIL with a single sequence argument no longer conses.
5141 * fixes to problems pointed out by Martin Atzmueller:
5142 * The manual page no longer talks about multiprocessing as though
5143 it were currently supported.
5144 * The ILISP support patches have been removed from the distribution,
5145 because as of version 5.10.1, ILISP now supports SBCL without us
5146 having to maintain patches.
5147 * added a modified version of Raymond Toy's recent CMU CL patch for
5148 EQUALP comparison of HASH-TABLE
5150 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5152 * The system still can't cross-compile itself with
5153 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5154 entails), but at least it can compile more of itself that way
5155 than it used to be able to, and various buglets which were uncovered
5156 by trying to cross-compile itself that way have now been fixed.
5157 * This release breaks binary compatibility again. This time
5158 at least I've incremented the FASL file format version to 2, so that the
5159 problem can be detected reliably instead of just causing weird errors.
5160 * various new style warnings:
5161 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5162 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5163 ** using the lexical binding of a variable named in the *FOO* style
5164 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5165 as specified by ANSI.
5166 * *RANDOM-STATE* is no longer automatically initialized from
5167 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5168 default behavior of the system is to repeat its behavior every time
5169 it's run. If you'd like to change this behavior, you can always
5170 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5171 old convention there was no comparably easy way to get the system to
5172 repeat its behavior every time it was run.
5173 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5174 FTYPE declarations has been removed, in favor of their ANSI
5175 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5176 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5177 the types of their sequence arguments can be determined at compile time.
5178 This is done through a new open code expansion for MAP which eliminates
5179 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5180 argument types can be determined at compile time.
5181 * The optimizer now transforms COERCE into an identity operation when it
5182 can prove that the coerced object is already of the correct type. (This
5183 can be a win for machine generated code, including the output of other
5184 optimization transforms, such as the MAP transform above.)
5185 * Credit information has been moved from source file headers into CREDITS.
5186 * Source file headers have been made more standard.
5187 * The CASE macro now compiles without complaining even when it has
5190 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5192 * (Note that the way that the PCL macroexpansions were rewritten
5193 to accommodate the change in DEFGENERIC below breaks binary
5194 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5195 not run under sbcl-0.6.2. Once we get out of alpha releases,
5196 i.e. hit release 1.0.0, we'll probably try to maintain binary
5197 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5198 and sbcl-1.4.4. Until then, however, it might be fairly common
5199 for maintenance releases to break binary compatibility.)
5200 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5202 * The reporting of unhandled signals has been changed to print some
5203 explanatory text as well as the report form. (Previously only
5204 the report form was printed.)
5205 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5206 it defines, so that the compiler no longer issues undefined function
5207 warnings for compiled-but-not-yet-loaded generic functions.
5208 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5209 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5210 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5211 section of the ANSI spec are supported.
5212 * The "" nickname for the "KEYWORD" package has been removed.
5213 The reader still handles symbol tokens which begin with a package marker
5214 as keywords, but it doesn't expose its mechanism for doing so in the
5215 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5216 * The system now issues STYLE-WARNINGs for contradictory TYPE
5217 proclamations. (Warnings for contradictory FTYPE proclamations would
5218 be nice too, but those can't be done usefully unless the type system
5219 is made smarter about FUNCTION types.)
5220 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5221 systematized, so that "*target-*.lisp is supposed to exist only on the
5222 target and imply that there's a related file which exists on the
5223 host, and *host-*.lisp is supposed to exist only on the host and imply
5224 that there's a related file which exists on the target. This involves a
5225 lot of renaming. Hopefully the acute confusion caused by the renaming
5226 will be justified by the reduction in chronic confusion..
5227 ** runtime-type.lisp -> early-target-type.lisp
5228 ** target-type.lisp -> late-target-type.lisp
5229 ** early-host-format.lisp -> early-format.lisp
5230 ** late-host-format.lisp -> late-format.lisp
5231 ** host-error.lisp -> misc-error.lisp
5232 ** early-error.lisp -> early-target-error.lisp
5233 ** late-error.lisp -> late-target-error.lisp
5234 ** host-defboot.lisp -> early-defboot.lisp
5235 ** code/misc.lisp -> code/target-misc.lisp
5236 ** code/host-misc.lisp -> code/misc.lisp
5237 ** code/numbers.lisp -> code/target-numbers.lisp
5238 ** code/early-numbers.lisp -> numbers.lisp
5239 ** early-host-type.lisp -> early-type.lisp
5240 ** late-host-type.lisp -> late-type.lisp
5241 ** host-typep.lisp -> typep.lisp
5242 ** load.lisp -> target-load.lisp
5243 ** host-load.lisp -> load.lisp
5244 ** host-disassem.lisp -> disassem.lisp
5245 ** host-insts.lisp -> insts.lisp
5246 ** byte-comp.lisp -> target-byte-comp.lisp
5247 ** host-byte-comp.lisp -> byte-comp.lisp
5248 ** host-signal.lisp -> signal.lisp
5249 ** host-defstruct.lisp -> defstruct.lisp
5250 ** late-target-type.lisp -> deftypes-for-target.lisp
5251 Furthermore, several other previously target-only files foo.lisp (e.g.
5252 hash-table.lisp and random.lisp) have been split into a target-and-host
5253 foo.lisp file and a target-only target-foo.lisp file, with their key type
5254 definitions in the target-and-host part, so that the cross-compiler will
5255 know more about target types.
5256 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5257 gone away. In their place are various *BACKEND-FOO* variables
5258 corresponding to the slots of the old structure.
5259 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5260 into the target SBCL has been fixed.
5261 * The chill.lisp system for loading cold code into a running SBCL
5263 * Support for the CMU CL "scavenger hook" extension has been removed.
5264 (It was undocumented and unused in the CMU CL sources that SBCL was
5265 derived from, and stale in sbcl-0.6.1.)
5266 * Various errors in the cross-compiler type system were detected
5267 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5268 (enabling various consistency checks). Many of them were fixed,
5269 but some hard problems remain, so the compiler is back to
5270 running without *TYPE-SYSTEM-INITIALIZED* for now.
5271 * As part of the cross-compiler type system cleanup, I implemented
5272 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5273 * I have started adding UNCROSS calls throughout the type system
5274 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5275 on cross-compiler input files will be able to go away, and various
5277 * CONSTANTP now returns true for quoted forms (as explicitly required
5280 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5282 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5283 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5284 (MAKE-LIST -1). In the longer term, it ought to become true
5285 that declarations are assertions even at SAFETY 1. For now, it's not
5286 quite true even at SAFETY 3, but it's at least more nearly true..
5287 (Note that this change seems to increases the size of the system by
5288 O(5%) and to decrease the speed of the compiler by 20% or more.)
5289 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5290 for the problem of printing dozens of lines of distracting information
5291 about low-level system machinery as part of the top stack frame
5292 on entry to the debugger when an undefined function was called.
5293 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5294 is not reset to COMMON-LISP-USER.
5295 * Compilation of stuff related to dyncount.lisp has been made conditional
5296 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5297 smaller. The various dyncount-related symbols have been moved into
5298 a new "SB-DYNCOUNT" package.
5299 * tty-inspect.lisp has been renamed to inspect.lisp.
5300 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5301 feature has gone away. (When we eventually port to other flavors of
5302 libc and/or Unix, we'll try to make the differences between flavors
5303 invisible at the user level.)
5304 * Various other *FEATURES* tags, and/or their associated conditionals,
5305 have been removed if obsolescent, or given better documentation, or
5306 sometimes given more-mnemonic names.
5308 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5310 * tidied up "make.sh" script
5311 * tidied up system directory structure
5312 * better "clean.sh" behavior
5313 * added doc/FOR-CMUCL-DEVELOPERS
5314 * many many small tweaks to output format, e.g. removing possibly-confusing
5315 trailing #\. character in DESCRIBE-INSTANCE
5316 * (EQUALP #\A 'A) no longer signals an error.
5317 * new hashing code, including EQUALP hashing
5318 * tidied up Lisp initialization and toplevel
5319 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5320 * command line argument processing
5321 * added POSIX-GETENV function to deal with Unix-ish environment variables
5322 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5323 terminating SBCL on EOF
5324 * non-verbose GC by default
5325 * There is no more "sbcl" shell script; the sbcl file is now the C
5326 runtime executable (just like CMU CL).
5327 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5329 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5330 symbol and package information as Lisp native symbol and package objects
5331 instead of strings naming symbols and strings naming packages. This way,
5332 whenever packages are renamed (as in warm init), debug information is
5333 transformed along with everything else.
5334 * tweaked the optimization policy declarations which control the building
5335 of SBCL itself. Now, among other things, the system no longer saves
5336 source location debugging information. (This helps two problems at once
5337 by reducing SBCL size and by keeping SBCL from trying to look for its
5338 sources -- which may not exist -- when reporting errors.)
5339 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5340 debugging and testing purposes
5341 * cleaned up printing, making the printer call PRINT-OBJECT for
5342 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5343 methods, giving nearly-ANSI behavior
5344 * converted almost all special variables to use *FOO* naming convention
5345 * deleted PARSE-TIME functionality, since it can be done portably
5346 * moved some files out of cold init into warm init
5347 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5349 * regularized formatting of source files
5350 * added an install.sh script
5351 * fixed ridiculous memory usage of cross-compiler by making
5352 compiler/alloc.lisp not try to do pooling unless it can hook
5353 itself into the GC of the cross-compilation host. Now the system
5354 builds nicely on my old laptop.
5355 * added :SB-ALLOC in target-features.lisp-expr
5356 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5357 was not implemented)
5358 * re-did condition handling and note reporting in the compiler. Notes
5359 are no longer handled by signalling conditions. Style warnings
5360 and warnings are handled more correctly and reported in such a way
5361 that it's easy to find one or the other in your output (so that you
5362 can e.g. figure out which of many problems caused COMPILE-FILE to
5364 * changed the severity of several compiler warnings from full WARNING
5365 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5366 compiler note reporting so that it doesn't use the condition system
5367 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5368 COMPILE-FILE command)
5369 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5370 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5371 no longer supported, since their implementation was deeply intertwingled
5372 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5373 * removed bogus "support" for compiler macros named (SETF FOO), and
5374 removed the compiler macro for SETF INFO (but only after making a fool
5375 of myself on the cmucl-imp mailing list by posting a bogus patch for
5376 DEFINE-COMPILER-MACRO..)
5377 * Compiled files containing forms which have side effects on the Lisp
5378 reader (such as DEFPACKAGE forms) are now handled more correctly.
5379 (Compiler queuing of top level lambdas has been suppressed by setting
5380 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5381 * deleted various currently-unused source files, e.g. gengc.lisp. They
5382 may be added back at some point e.g. when porting to other architectures,
5383 but until they are it's distracting to distribute them and to try to
5385 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5386 there were so many of them they're just distractions, and UNCROSS is
5387 known to be able to handle the current sources
5388 * moved PROFILE functionality into TRACE, so that it will be clear
5389 how the wrapping and unwrapping of functions when you profile them
5390 interacts with the wrapping and unwrapping of functions when you
5391 trace them. (Actually, the functionality isn't there yet, but at least
5392 the interface specification is there. Hopefully, the functionality will
5393 arrive with some future maintenance release.)
5394 * removed host-oops.lisp
5395 * changed signature of QUIT function to allow UNIX-CODE argument
5396 * fixed READ-SEQUENCE bug
5397 * tweaked verbose GC output so that it looks more like the progress
5398 output that ANSI specifies for functions like LOAD
5399 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5400 * added <http://sbcl.sourceforge.com> to the banner information printed by