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: redefinition of a class via DEFCLASS without :DEFAULT-INITARGS
10 removes previous default initargs (reported by Lars Rune Nøstdal and
12 * bug fix: correct WHO-CALLS information for inlined lambdas with complex
13 lambda-lists. (reported by Peter Seibel)
14 * bug fix: SAVE-LISP-AND-DIE option :SAVE-RUNTIME-OPTIONS did not work
15 correctly when starting from an executable core without saved runtime
16 options (reported by Faré Rideau, thanks to Zach Beane)
17 * bug fix: (SETF SLOT-VALUE) signalled a warning which should have been
18 an optimization note instead. (reported by Martin Cracauer)
19 * bug fix: WITH-SLOTS did not work with THE forms. (thanks to David Tolpin)
21 changes in sbcl-1.0.31 relative to sbcl-1.0.30:
22 * improvement: stack allocation is should now be possible in all nested
23 inlining cases: failure to stack allocate when equivalent code is manually
24 open coded is now considered a bug.
25 * improvements related to Unicode:
26 ** the Unicode character database has been upgraded to the
27 Unicode 5.1 standard, giving names and properties to a number of new
28 characters, and providing a few extra characters with case
30 ** the system now recognizes and produces names for Unicode Hangul
32 ** the EBCDIC-US external-format is now supported for octet operations
33 (as well as for stream operations).
34 * new feature: experimental :EMIT-CFASL parameter to COMPILE-FILE can
35 be used to output toplevel compile-time effects into a separate .CFASL
37 * optimization: COERCE to VECTOR, STRING, SIMPLE-STRING and recognizable
38 one-dimenstional subtypes of ARRAY is upto 70% faster when the coercion is
40 * optimization: TRUNCATE on known single- and double-floats is upto 25%
42 * optimization: division of floating point numbers by constants uses
43 multiplication by reciprocal when an exact reciprocal exists.
44 * optimization: multiplication of single- and double-floats floats by
45 constant two has been optimized.
46 * optimization: ARRAY-IN-BOUNDS-P is resolved at compile-time when
47 sufficient type information is available. (thanks to Leslie Polzer)
48 * optimization: SLOT-VALUE and (SETF SLOT-VALUE) with constant slot names on
49 known structure objects are as efficient as defstruct generated accessors.
50 * optimization: unused vector creation can now be optimized away.
51 * improvement: ASDF systems can now depends on SB-INTROSPECT.
52 * improvement: a STYLE-WARNING is signalled when a generic function
53 clobbers an earlier FTYPE proclamation.
54 * improvement: the compiler is able to track the effective type of
55 generic function across method addition and removal even in the
56 absence of an explicit DEFGENERIC.
57 * improvement: DESCRIBE now reports on symbols naming undefined
58 but assumed or declared function as well.
59 * improvement: recompilation of systems using SB-GROVEL now works
60 (thanks to Leslie Polzer)
61 * improvements to SB-CLTL2 (thanks to Larry D'Anna):
62 ** functions DECLARATION-INFORMATION, PARSE-MACRO, and ENCLOSE have been
64 ** AUGMENT-ENVIRONMENT and DEFINE-DECLARATION have been implemented.
65 ** DECLARATION-INFORMATION now supports declaration name DECLARATION as
66 well as user defined declaration names.
67 ** VARIABLE-INFORMATION is now aware of alien variables.
68 * improvement: improved address space layout on OpenBSD (thanks to Josh
70 * improvement: pretty-printing of various Lisp forms has been improved
71 (thanks to Tobias Rittweiler)
72 * bug fix: calls to DECODE-FLOAT and INTEGER-DECODE-FLOAT whose value was
73 unused were deleted in safe code. (reported by John Fremlin)
74 * bug fix: a failing AVER compiling certain MAKE-ARRAY forms. (reported
76 * bug fix: some out-of-line array predicates were missing (reported by
78 * bug fix: a failing AVER in CONVERT-MV-CALL has been fixed. (thanks to
80 * bug fix: a failing AVER in %ALLOCATE-CLOSURES conversion has been fixed
81 (thanks to Larry D'Anna)
82 * bug fix: SLEEP supports times over 100 million seconds on long on OpenBSD
83 as well. (reported by Josh Elsasser)
84 * bug fix: DELETE-FILE on streams no longer closes the stream with :ABORT T,
85 leading to possible attempts to delete the same file twice. See docstring
86 on DELETE-FILE for details. (reported by John Fremlin)
87 * bug fix: DELETE-FILE once again deletes the file named by the pathname
88 designator argument, rather than its truename. (reported by Luis
90 * bug fix: the low-level debugger had 32-bit assumptions and was missing
91 information about some array types. (thanks to Luis Oliveira)
92 * bug fix: moderately complex combinations of inline expansions could
93 be miscompiled if the result was declared to be dynamic extent.
94 * bug fix: on x86, SAP-REF of sizes greater than 8 bits with offsets of the
95 form (+ <variable> <integer>) were miscompiled under certain
97 * bug fix: in some cases no compiler note about failure to stack allocate
98 was emitted, even if the objects were in fact heap allocated.
99 * bug fix: minor violation of "otherwise inaccessible" rule for stack
100 allocation could cause objects users might reasonably expect to
101 be heap allocated to be stack allocated.
102 * bug fix: DESCRIBE signalled an error for generic functions under
103 certain circumstances. (thanks to Leslie Polzer)
104 * bug fix: Fixed spelling of an error message.
106 changes in sbcl-1.0.30 relative to sbcl-1.0.29:
107 * minor incompatible change: SB-THREAD:JOIN-THREAD-ERROR-THREAD and
108 SB-THREAD:INTERRUPT-THREAD-ERROR-THREAD have been deprecated in favor
109 of SB-THREAD:THREAD-ERROR-THREAD.
110 * new contrib module: SB-QUEUE provides thread-safe lockless FIFO queues.
111 * new feature: docstrings for local and anonymous functions are no longer
112 discarded. (thanks to Leslie Polzer)
113 * new feature: SB-THREAD:SYMBOL-VALUE-IN-THREAD provides access to symbol
114 values in other threads.
115 * new feature: SB-INTROSPECT:ALLOCATION-INFORMATION provides information
116 about object allocation.
117 * optimization: division of a real float by a complex float is implemented
118 with a specialised code sequence.
119 * optimization: MAKE-INSTANCE with non-constant class-argument but constant
120 keywords is an order of magnitude faster.
121 * optimization: MAKE-INSTANCE with constant keyword arguments is x2-4 faster
122 in the presence of :AROUND or non-standard primary INITIALIZE-INSTANCE
123 methods, and similarly for non-standard metaclass classes as long as there
124 are no methods additional on MAKE-INSTANCE.
125 * optimization: more efficient type-checks for FIXNUMs when the value
126 is known to be a signed word on x86 and x86-64.
127 * optimization: compiler now optimizes (EXPT -1 INTEGER), (EXPT -1.0 INTEGER),
128 and (EXPT -1.0d0 INTEGER) into an ODDP test. (thanks to Stas Boukarev and
130 * optimization: compiler is smarter about delegating argument type checks to
132 * optimization: several character functions are now compiled somewhat more
133 efficiently. (reported by Lynn Quam)
134 * optimization: the compiler now derives simple types for LOAD-VALUE-FORMs.
135 * improvement: less unsafe constant folding in floating point arithmetic,
136 especially for mixed complex/real -float operations.
137 * optimization: constant double and single floats are stored in native
138 unboxed format on x86[-64].
139 * optimization: smarter code for arithmetic operations with constant floats,
140 complex floats, or integers on x86[-64].
141 * optimization: smarter code for conjugate/multiplication of float complexes
142 and abs/negate of floats on x86-64.
143 * optimization: more efficient complex float and real float operations on
145 * improvement: complex float division is slightly more stable.
146 * improvement: DESCRIBE output has been reworked to be easier to read and
147 contains more pertinent information.
148 * improvement: failure to provide requested stack allocation compiler notes
149 provided in all cases (requested stack allocation not happening without a
150 note being issued is now considered a bug.)
151 * bug fix: SB-POSIX exports the documented types and functions
152 FILE-DESCRIPTOR and FILENAME, and also the corresponding -DESCRIPTOR
153 types. (reported by "abhi")
154 * bug fix: on 64 bit platforms FILL worked incorrectly on arrays with
155 upgraded element type (COMPLEX SINGLE-FLOAT), regression from 1.0.28.55.
156 (thanks to Paul Khuong)
157 * bug fix: looping around HANDLER-CASE could silently consume stack space
158 on each iteration. (reported by "foobar")
159 * bug fix: better error signalling when calls to functions seeking elements
160 from lists (eg. ADJOIN) are compiled with both :TEST and :TEST-NOT.
161 (reported by Tobias Rittweiler)
162 * bug fix: regressions in DIRECTORY from 1.0.28.61: pattern matching of
163 directory components now works as it used to. (various prolems reported by
164 Michael Becker, Gabriel Dos Reis, Cyrus Harmon, and Harald Hanche-Olsen)
165 * bug fix: :PTY option in RUN-PROGRAM was broken with stream arguments.
166 (reported by Elliot Slaughter, thanks to Stas Boukarev)
167 * bug fix: bogus undefined variable warnings from fopcompiled references to
168 global variables. (thanks to Lars Rune Nøstdal)
169 * bug fix: foreign function names should now appear in backtraces on
170 FC6 as well. (reported by Tomasz Skutnik and Tobias Rautenkranz)
171 * bug fix: SETF compiler macro documentation strings are not discarded
173 * bug fix: GENTEMP is now unaffected by pretty printer dispatch table.
174 (thanks to Alex Plotnick)
175 * bug fix: SLEEP accepts large integer arguments, truncating them to
176 SIGNED-WORD on the assumption that sleeping for 68 years is sufficient
177 for anyone. (reported by Leslie Polzer, thanks to Stas Boukarev)
178 * bug fix: compiler notes for expensive slot type checks could be emitted
179 at runtime MAKE-INSTANCE calls. (reported by Samium Gromoff)
181 changes in sbcl-1.0.29 relative to 1.0.28:
182 * IMPORTANT: bug database has moved from the BUGS file to Launchpad
183 https://bugs.launchpad.net/sbcl
184 Bugs can be reported directly there, or by sending email to
185 sbcl-bugs@lists.sourceforge.net
186 (no subscription required.)
187 * minor incompatible change: under weak type checking policy integer
188 types are weakened less aggressively.
189 * minor incompatible change: SAVE-LISP-AND-DIE :TOPLEVEL function is now
190 allowed to return, which causes SBCL to quit with exit status 0. Previously
191 if the function returned with a small integer return value, that value
192 was accidentally reused as the exit status.
193 * new feature: SB-EXT:DEFINE-HASH-TABLE-TEST allows defining new arguments
194 to MAKE-HASH-TABLE :TEST, and MAKE-HASH-TABLE has been extended with
195 :HASH-FUNCTION argument. Refer to user manual for details.
196 * new feature: SB-EXT:DEFGLOBAL macro allows defining global non-special
198 * new feature: SB-EXT:GET-TIME-OF-DAY provides access to seconds and
199 microseconds since the Unix epoch on all platforms.
200 * new feature: SB-EXT:ALWAYS-BOUND proclamation inhibits MAKUNBOUND, and
201 allows the compiler to safely elide boundedness checks for special
203 * new feature: SB-EXT:GLOBAL proclamation inhibits SPECIAL proclamations for
204 the symbol, prohibits both lexical and dynamic binding. This is mainly an
205 efficiency measure for threaded platforms, but also valueable in
207 * new feature: UNC pathnames are now understood by the system on Windows.
208 * optimization: the compiler uses a specialized version of FILL when the
209 element type is know in more cases, making eg. (UNSIGNED-BYTE 8) case
211 * optimization: accesses to potentially non-simple arrays where element type
212 is known are 50% faster.
213 * optimization: compiler now generates faster array typechecking code.
214 * optimization: ARRAY-DIMENSION is now faster for multidimensional and
216 * optimization: multidimensional array accesses in the absence of type
217 information regarding array rank are approximately 10% faster due to
218 open coding of ARRAY-RANK.
219 * optimization: result of (FILL (MAKE-ARRAY ...) ...) and (REPLACE
220 (MAKE-ARRAY ...) ...) can be stack allocated if the result of MAKE-ARRAY
222 * optimization: result of call to VECTOR can now be stack allocated.
223 * optimization: MAKE-ARRAY with :INITIAL-CONTENTS is now vastly faster
224 as long as the resulting array is one-dimensional and has a known
225 element type. In particular, :INITIAL-CONTENTS (LIST ...) where the
226 length of the list matches the known length of the vector does not
227 allocate the list as an intermediate step. Ditto for VECTOR and simple
229 * optimization: MAKE-ARRAY can now stack allocate in the presence of
230 :INITIAL-CONTENTS and :INITIAL-ELEMENT as long as the result has a
231 known element type, and is known to be simple and one dimensional.
232 * improvement: SBCL now emits a compiler note where stack allocation was
233 requested but could not be provided (not in all cases, unfortunately)
234 * improvement: better MACHINE-VERSION responses. (thanks to Josh Elsasser)
235 * improvement: pretty-printing loop has been implemented properly. (thanks
236 to Tobias Rittweiler)
237 * documentation: CLOS slot typechecing policy has been documented.
238 * bug fix: FILE-AUTHOR no longer signals an error on Windows.
239 * bug fix: SB-SPROF could be foiled by foreign code not have a frame
240 pointer, leading to memory faults. (thanks to Bart Botta)
241 * bug fix: better floating point exception handling on x86/OpenBSD.
242 (thanks to Josh Elsasser)
243 * bug fix: exit status from QUIT when called under --script was lost
244 (reported by Hubert Kauker)
245 * bug fix: MAKE-ARRAY for non-zero :INITIAL-ELEMENT always used the
246 same implementation of FILL to initialize the array, even if a more
247 efficient one was available (reported by Stas Boukarev, thanks to
249 * bug fix: potential miscompilation of array stack allocation on x86 and
250 x86-64. (reported by Time Tossavainen)
251 * bug fix: some forms of AND, OR, and COND resulted in expansions that could
252 result in their subforms being treated as top level forms. (reported by
254 * bug fix: On x86/x86-64 alien functions declared to return integers shorter
255 than a machine register could leave garbage in the high bits of the
256 result register (bug 316325).
257 * bug fix: disable address space randomization Linux/x86-64 as well,
258 not just x86-64. (reported by Ken Olum)
259 * bug fix: Attempting to DEREF an (ALIEN (* T)) would produce a WARNING and
260 generate incorrect code.
261 * bug fix: #201; type inference for CONS and ARRAY types could derive
262 wrong results in the presence of eg. RPLACA or ADJUST-ARRAY.
263 * bug fix: special variables with a proclaimed specific subtype of FUNCTION
264 could not be assigned to or bound with PROGV. (reported by Lorenz
266 * bug fix: the value of CL:- in the inspector was the previous expression
267 evaluated rather than the expression being evaluated.
268 * bug fix: constants can no longer be locally declared special.
269 * bug fix: signals delivered to threads started from foreign land (read:
270 directly by pthread_create, not by MAKE-THREAD) are redirected to a Lisp
271 thread by blocking all signals and resignalling.
272 * bug fix: SHARED-INITIALIZE initialized unbound :ALLOCATION :CLASS slots
273 from :INITFORM, if any.
275 changes in sbcl-1.0.28 relative to 1.0.27:
276 * a number of bugs in cross-compilation have been fixed, with the ultimate
277 result that building under (at least) clisp should be much more reliable.
278 * minor incompatible changes: echo-streams now propagate unread-char to the
279 underlying input stream, and no longer permit unreading more than one
281 * improvement: on x86/x86-64 Lisp call frames now have the same layout as C
282 frames, allowing for instance more reliable backtraces.
283 * improvement: the debugger REPL can now reference lexical variables
284 by name directly for code compiled with (DEBUG 3).
285 * improvement: errors from malformed declarations now have better source
286 paths associated with them. (thanks to Tobias Rittweiler)
287 * optimization: faster local calls on x86/x86-64
288 * bug fix: some error messages for out-of-bound array indexes confused the
289 index and the bound. (thanks to Stas Boukarev)
290 * bug fix: pretty printing malformed DEFPACKAGE forms (thanks to Sidney
292 * bug fix: running regressions tests in shells without OSTYPE set now works.
293 (reported by Harald Hanche-Olsen)
294 * bug fix: more robust static space exhaustion signalling from
295 MAKE-STATIC-VECTOR (thanks to Daniel Lowe)
296 * bug fix: (SETF DOCUMENTATION) for anonymous function now throws the
297 docstring away instead of storing it under names such as (LAMBDA (X)).
298 (reported by Leslie Polzer)
299 * bug fix: timers could go off in the wrong order, be delayed indefinitely
300 (thanks to Ole Arndt for the patch)
301 * bug fix: RESTART-FRAME and RETURN-FROM-FRAME stack corruption
302 * bug fix: the discriminating function for PRINT-OBJECT no longer preserves
303 potentially-invalid effective methods in its cache.
304 * bug fix: SB-INTROSPECT:FIND-DEFINITION-SOURCE now works with funcallable
305 instances as well (thanks to Paul Khuong)
306 * bug fix: using RUN-PROGRAM does not interfere with SB-POSIX:WAIT,
307 SB-POSIX:WAITPID and their C equivalents.
308 * bug fix: RUN-PROGRAM does not crash on Darwin when stressed.
310 changes in sbcl-1.0.27 relative to 1.0.26:
311 * new port: support added for x86-64 OpenBSD. (thanks to Josh Elsasser)
312 * new port: support added for x86-64 Solaris. (thanks to Alex Viskovatoff)
313 * improvement: the system either recovers from stack exhaustion or dies
314 properly as opposed to leaving the user uncertain of whether the handler
315 trampled on some random memory next to the stack or having to rely on
316 --lose-on-corruption (which is still a good idea to use in production
317 because stack exhaustion can happen in signal handlers which will likely
319 * bug fix: fix gc related interrupt handling bug on ppc (regression from
320 1.0.25.37, reported by Harald Hanche-Olsen)
321 * bug fix: work around signal delivery bug in darwin (regression from
322 1.0.25.44, reported by Sidney Markowitz)
323 * bug fix: fix ERROR leaking memory (reported by David Thompson)
325 changes in sbcl-1.0.26 relative to 1.0.25:
326 * incompatible change: an interruption (be it a function passed to
327 INTERRUPT-THREAD or a timer function) runs in an environment where
328 interrupts can be enabled. The interruption can use
329 WITH-INTERRUPTS or WITHOUT-INTERRUPTS as it sees fit. Use
330 WITHOUT-INTERRUPTS to avoid nesting of interruptions and
331 potentially running out of stack. Keep in mind that in the absence
332 of WITHOUT-INTERRUPTS some potentially blocking operation such as
333 acquiring a lock can enable interrupts.
334 * incompatible change: GC-OFF and GC-ON are removed, as they were
335 always unsafe. Use WITHOUT-GCING instead.
336 * new feature: runtime option --disable-ldb
337 * new feature: runtime option --lose-on-corruption to die at the
338 slightest hint of possibly non-recoverable errors: running out of
339 memory, stack, alien stack, binding stack, encountering a memory
340 fault, etc. In the absence of --lose-on-corruption a warning is
342 * enhancement: detect binding stack exhaustion
343 * enhancement: detect alien stack exhaustion on x86/x86-64
344 * improvement: generally more stable and reliable interrupt handling
345 * improvement: there is a per thread interruption queue,
346 interruptions are executed in order of arrival
347 * improvement: a repeating timer reschedules itself when the it has
348 finished, but expiration times are spaced equally. If an
349 expiration time is in the past it will trigger after a short grace
350 period that may give a chance to other things to run.
351 * optimization: slightly faster gc on multithreaded builds
352 * optimization: faster WITHOUT-GCING
353 * bug fix: when JOIN-THREAD signals an error, do it when not holding
354 important locks so that the debugger/handler doesn't produce
355 recursive errors or deadlock.
356 * bug fix: real-time signals are not used anymore, so no more
357 hanging when the system wide real-time signal queue gets full.
358 * bug fix: INTERRUPT-THREAD on a dying thread could produce memory
360 * bug fix: finalizers, gc hooks never run in a WITHOUT-INTERRUPTS
361 * bug fix: fix random memory faults related to interrupts on alpha
362 * bug fix: fix random memory faults related to interrupts on sparc
363 * bug fix: fix deadlocks related to starting threads
364 * bug fix: fix deadlines on locks on futex platforms
365 * bug fix: restore errno in signal handlers
366 * bug fix: fix deadlocks related to hash tables
367 * bug fix: fix deadlocks in pcl
369 changes in sbcl-1.0.25 relative to 1.0.24:
370 * incompatible change: SB-INTROSPECT:FUNCTION-ARGLIST is deprecated, to be
371 removed later. Please use SB-INTROSPECT:FUNCTION-LAMBDA-LIST instead.
372 * new feature: SB-INTROSPECT:DEFTYPE-LAMBDA-LIST allows retrieval of
373 DEFTYPE lambda lists. (thanks to Tobias Rittweiler)
374 * enhancement: MUTEX-VALUE is to be superseded by MUTEX-OWNER that has a
375 better name and does not return values so stale on multiprocessor systems.
376 Also, HOLDING-MUTEX-P was added for about the only sane usage of
378 * improvement: unithread builds keep track of MUTEX-VALUE.
379 * improvement: reading from a TWO-WAY-STREAM does not touch the output
380 stream anymore making it thread safe to have a concurrent reader and
381 a writer, for instance, in a pipe.
382 * improvement: GET-SETF-EXPANDER avoids adding bindings for constant
383 arguments, making compiler-macros for SETF-functions able to inspect
384 their constant arguments.
385 * improvement: COMPILE-FILE reports times with millisecond accuracy
386 (thanks to Luis Oliveira)
387 * optimization: CHAR-CODE type derivation has been improved, making
388 TYPEP elimination on subtypes of CHARACTER work better. (reported
389 by Tobias Rittweiler, patch by Paul Khuong)
390 * bug fix: setting alien structure fields of type struct by value now
391 computes the right offset for the memory copy.
392 * bug fix: compilation problem involving inlined calls to aliens with
393 result type VOID. (reported by Ken Olum)
394 * bug fix: #235a; sequential inline expasion in different policies no
395 longer reuses the functional from the previous expansion site.
396 * bug fix: DEFTYPE no longer breaks on bodies consisting of a single
397 unquoted symbol. Regression from 1.0.22.8. (reported by Ariel Badichi)
398 * bug fix: named ENUMs in multiply-referenced alien record types no longer
399 cause an implied type redefinition. Regression from 1.0.21.29.
400 * bug fix: sign-extension of small signed return values now works with C
401 code compiled with gcc 4.3 or newer. (reported by Liam Healy)
402 * improvements to the Windows port:
403 ** SB-BSD-SOCKETS now works from saved cores as well. (reported by Stephen
404 Westfold, thanks to Rudi Schlatte)
406 changes in sbcl-1.0.24 relative to 1.0.23:
407 * new feature: ARRAY-STORAGE-VECTOR provides access to the underlying data
408 vector of a multidimensional SIMPLE-ARRAY.
409 * new feature: the system now signals a continuable error if standard
410 readtable modification is attempted. (thanks to Tobias Rittweiler)
411 * new feature: DIRECTORY has been extended with a non-standard keyword
412 argument :RESOLVE-SYMLINKS. (thanks to TC-Rucho)
413 * enhancement: SB-BSD-SOCKETS:MAKE-SOCKET-STREAM keyword argument handling
414 has been robustified and documented better. (thanks to Robert Goldman)
415 * optimization: faster generic arithmetic dispatch on x86 and x86-64.
416 * optimization: FORMAT ~D and ~F are now approximately 5% faster.
417 * tradeoff: constant FORMAT control strings are now compiled unless
418 SPACE > SPEED (previously only when SPEED > SPACE.)
419 * bug fix: Red Hat Enterprise 3 mmap randomization workaround. (thanks
421 * bug fix: DEFCLASS and ENSURE-CLASS-USING-CLASS are now expected to
423 * bug fix: lexical type declarations are now correctly reported by
424 SB-CLTL2. (reported by Larry D'Anna)
425 * bug fix: STRING-TO-OCTETS did not handle :START properly when
426 using UTF-8 as external format. (thanks to Luis Oliveira)
427 * bug fix: errors from invalid fill-pointer values to (SETF FILL-POINTER)
428 are signalled correctly. (thanks to Stas Boukarev)
429 * bug fix: SET-MACRO-CHARACTER accepts NIL as the readtable
430 designator. (thanks to Tobias Rittweiler)
431 * bug fix: SET-DISPATCH-MACRO-CHARACTER accepts NIL as the readtable
432 designator, and returns T instead of the function. (thanks to
434 * bug fix: direct superclasses of STANDARD-CLASS and
435 FUNCALLABLE-STANDARD-CLASS now default to STANDARD-OBJECT and
436 FUNCALLABLE-STANDARD-OBJECT as required by AMOP.
437 * bug fix: compiling a call to SLOT-VALUE with a constant slot-name
438 when no class with the named slot yet exists no longer causes a
439 compile-time style-warning.
440 * bug fix: :ALLOCATION :CLASS slots are type-checked properly
441 in safe code. (reported by Didier Verna)
442 * bug fix: #430; nested structure constructors can stack allocate.
443 * bug fix: on some 64-bit platforms dynamic space size was truncated
444 to #xffff0000 bytes. (reported by Benjamin Lambert)
445 * bug fix: setting *READ-SUPPRESS* to T no longer renders the default
446 REPL unusable. (reported by Daniel Herring)
447 * bug fix: return values of READ-SEQUENCE did not take :START into
448 account on file streams, regressions since 1.0.12.22. (reported by
449 Thomas Russ, patch by Paul Khuong)
450 * bug fix: using SET or (SETF SYMBOL-VALUE) to change the value of a
451 method specializer used to confuse permuation vector optimization.
452 * bug fix: system inserted bogus implicit type declarations for local
453 special variables in DEFMETHOD bodies.
454 * bug fix: #354; duplicated frames in backtraces due to
455 non-tail-call-optimized XEPs to functions with return type NIL
457 * bug fix: #357; MAKE-INSTANCE/SHARED-INITIALIZE now
458 initializes structure object slots according to DEFSTRUCT initforms,
459 and DEFSTRUCT forms :INCLUDEind structure classes defined using
460 DEFCLASS :METACLASS STRUCTURE-CLASS now inherit their initforms.
461 (reported by Bruno Haible and Stephen Wilson)
462 * bug fix: #395; fill-pointer output streams used now support
463 element-type BASE-CHAR as well.
464 * bug fix: compiler error when attempting to derive return value of
465 ARRAY-ELEMENT-TYPE when the array type was a union of intersection
467 * bug fix: address-spaces overlapped on OpenBSD. (thanks to Josh
469 * bug fix: Mac OS X binaries should now be portable between Leopard
472 changes in sbcl-1.0.23 relative to 1.0.22:
473 * enhancement: when disassembling method functions, disassembly
474 for the associated fast function is also produced.
475 * enhancement: system stores DEFTYPE lambda-lists, so DESCRIBE can
477 * optimization: printing with *PRINT-PRETTY* true is now more
478 efficient as long as the object being printed doesn't require
479 special handling by the pretty printer.
480 * bug fix: slot symbol-macros from WITH-SLOTS inside DEFMETHOD bodies
481 now interact correctly with type declarations.
482 * partial bug fix: PCL detects infinite recursion during wrapper
483 validation. (thanks to Attila Lendvai)
484 * bug fix: #426; nested function calls are inlined properly.
485 Previously if FOO was an inline function, in calls of the form
486 (FOO (FOO ...)) the outer call was not inlined.
487 * bug fix: long long arguments passed in registers to alien
488 functions on PowerPC Linux and NetBSD are now handled correctly
489 when preceded by SYSTEM-AREA-POINTERs. (reported by Josh Elsasser)
491 changes in sbcl-1.0.22 relative to 1.0.21:
492 * minor incompatible change: LOAD-SHARED-OBJECT no longer by default looks
493 for the shared object in the current directory, but passes the native
494 namestring of the designated pathname to the operation system's shared
495 object loading function as-it.
496 * minor incompatible change: --disable-debugger toplevel option now takes
497 effect before processing of initialization files and --eval or --load
499 * new feature: new commandline argument: --script, which supports
500 shebang lines. See documentation for details. (based on work by
502 * new feature: SAVE-LISP-AND-DIE can save current values of
503 --dynamic-space-size and --control-stack-size in the executable core,
504 causing it to skip normal runtime option processing. See documentation
505 for details. (thanks to Zach Beane)
506 * enhancement: inoccous calls to EVAL or generic functions dispatching
507 on subclasses of eg. STREAM no longer cause compiler notes to appear.
508 * enhancement: the system no longer resignals errors from --load and
509 --eval toplevel arguments as SIMPLE-ERRORS, which caused restarts
510 associated with the original error to be lost. (thanks to Ariel
512 * enhancement: :DONT-SAVE keyword argument has been added to
513 LOAD-SHARED-OBJECT for controlling interaction with
514 SAVE-LISP-AND-DIE, and UNLOAD-SHARED-OBJECT can be used to undo
515 the effects of an earlier LOAD-SHARED-OBJECT call.
516 * bug fix: ADJUST-ARRAY on multidimensional arrays used bogusly give
517 them a fill pointer unless :DISPLACED-TO or :INITIAL-CONTENTS were
518 provided. (reported by Cedric St-Jean)
519 * bug fix: circularity handling in the reader did not treat raw
520 structure slots correctly. (reported by Cedric St-Jean)
521 * bug fix: SERVE-EVENT occasionally signaled an error about bogus
522 file descriptors when there were none.
523 * bug fix: DEFINE-COMPILER-MACRO support of destructuring lambda-lists
524 was broken. (reporteed by Willem Broekema)
525 * bug fix: SB-EXT:NATIVE-NAMESTRING on Windows did not work on
526 pathnames without a directory.
527 * bug fix: COMPILE-FILE did not warn about undefined variable
528 references at toplevel, and LOAD of the resulting fasl did
530 * bug fix: functions with non-required arguments used to end up with
531 (SB-C::&OPTIONAL-DISPATCH ...) as their name.
532 * bug fix: redefining a function with non-required arguments didn't
533 update the system's knowledge about its call signature properly.
534 * bug fix: fixed #431; incompatible alien record type redefinitions
535 are detected and handled. (reported by Neil Haven)
536 * bug fix: using RESTRICT-COMPILER-POLICY with DEBUG 3 could cause
537 PROGV miscompilation. (reported by Matthias Benkard, patch by Juho
539 * bug fix: on x86 and x86-64 backtraces were sometimes truncated
540 after alien stack frames.
541 * bug fix: strings passed to mk{s,d}temp lacked null termination
543 changes in sbcl-1.0.21 relative to 1.0.20:
544 * new feature: the compiler is able to track the effective type of a
545 generic function across method addition and removal.
546 * new feature: SB-EXT:ATOMIC-INCF allows atomic incrementation of
547 appropriately typed structure slots without locking.
548 * new feature: SB-EXT:CALL-WITH-TIMING provides access to timing
549 information like those gathered by TIME using a programming-friendly
551 * new feature: TIME reports time taken even if the form performs a
552 non-local transfer of control.
553 * enhancement: reduced conservativism on GENCGC platforms: on
554 average 45% less pages pinned (measured from SBCL self build).
555 * bug fix: SB-EXT:COMPARE-AND-SWAP on SYMBOL-VALUE can no longer
556 mutate constant symbols or violate declaimed type of the symbol.
557 * bug fix: SB-THREAD:SIGNAL-SEMAPHORE could fail to wakeup threads
558 sleeping on the semaphore in heavily contested semaphores.
559 * bug fix: semaphores and condition variables were not interrupt
561 * bug fix: SB-THREAD:CONDITION-WAIT doesn't allow waits on mutexes
562 owned by other threads anymore.
563 * bug fix: FIND on lists called KEY outside the specified
564 subsequence. (reported by budden)
565 * bug fix: LOG doesn't use single-float intermediate results when
566 given mixed integer and double-float arguments, leading to better
567 precision. (reported by Bob Felts)
568 * bug fix: LOG with base zero returned values of inconsistent type.
570 changes in sbcl-1.0.20 relative to 1.0.19:
571 * minor incompatible change: OPTIMIZE qualities
572 SB-C::STACK-ALLOCATE-DYNAMIC-EXTENT, SB-C::STACK-ALLOCATE-VECTOR,
573 and SB-C::STACK-ALLOCATE-VALUE-CELLS no longer exist. See documentation
574 and SB-EXT:*STACK-ALLOCATE-DYNAMIC-EXTENT* for details.
575 * documentation: some slot access efficiency guidelines have been
576 added to the user manual.
577 * optimization: ASSOC-IF, ASSOC-IF-NOT, MEMBER-IF, MEMBER-IF-NOT,
578 RASSOC, RASSOC-IF, and RASSOC-IF-NOT are now equally efficient
579 as ASSOC and MEMEBER.
580 * optimization: calls to ASSOC, MEMBER, and RASSOC can be transformed
581 to more efficient EQ-comparison versions more often.
582 * optimization: enhanced derivation of DOLIST iteration variable type
584 * optimization: constant folding of simple (LIST ...) forms as DOLIST
586 * optimization: runtime lookup of function definitions can be
587 elided in more cases, eg: (let ((x 'foo)) (funcall foo)).
588 * optimization: compiler is able to derive the return type of
589 (AREF (THE STRING X) Y) as being CHARACTER.
590 * optimization: CLRHASH on empty hash-tables no longer does pointless
591 work. (thanks to Alec Berryman)
592 * optimization: REPLACE deftransforms don't punt when :START1 or
594 * bug fix: compiling DESTRUCTURING-BIND on constant list arguments
595 no longer emits a code deletion note. (reported by Andrew
597 * bug fix: bogus odd-number-of-keywords STYLE-WARNINGs from calls to
598 functions with an odd number of &OPTIONAL arguments, a &REST
599 argument, and one or more &KEY arguments at the call site.
600 * bug fix: STYLE-WARNINGs for functions with both &OPTIONAL and &KEY
601 arguments appeared at call sites as well.
602 * bug fix: fixed #425; CLOSE drops input buffers from streams, so
603 READ-LINE &co can no longer read from them afterwards. (reported
605 * bug fix: fixed #427: unused local aliens no longer cause compiler
606 breakage. (reported by Stelian Ionescu, Andy Hefner and Stanislaw
608 * bug fix: non-local exit from a WITH-ALIEN form no longer causes
609 alien-stack leakage. (reported by Andy Hefner)
610 * bug fix: PROGV signals an error when an attempt to violate declared
611 type of a variable or bind a constant is made.
612 * bug fix: SET signals an error when an attempt to violate declared
613 type of a variable is made.
614 * bug fix: restart computation during the execution of a restart
615 test function no longer causes infinite recursion. (reported by
617 * bug fix: calling SB-COVER:REPORT with a non-directory pathname now
618 signals an error. (thanks to Pierre Mai)
619 * bug fix: EXPORT left symbol unexported in conflict situations.
620 (thanks to Michael Weber)
621 * bug fix: correctly handle name conflicts involving CL:NIL.
622 (thanks to Michael Weber)
623 * bug fix: RESOLVE-CONFLICT restart for name conflicts handles
624 conflicts arising from USEing package with conflicting symbols
625 correctly. (thanks to Michael Weber)
627 changes in sbcl-1.0.19 relative to 1.0.18:
628 * new feature: user-customizable variable SB-EXT:*MUFFLED-WARNINGS*;
629 warnings that go otherwise unhandled will be muffled if they are
630 of the type that's the value of this variable.
631 * optimization: stack allocation is slightly more efficient on x86
633 * bug fix: DEFSTRUCT forms with user-specified :CONSTRUCTOR options,
634 where a raw slot always is initialized using the initform whose
635 type is not know sufficiently well a compile-time are now compiled
636 correctly. (reported by John Morrison)
637 * bug fix: compiler no longer makes erronous assumptions in the
638 presence of non-foldable SATISFIES types.
639 * bug fix: stack analysis missed cleanups of dynamic-extent
640 arguments in non-let-converted calls to local functions.
641 * improvements to the Windows port:
642 ** adjusted address spaces for building on both Win32 and
643 Win64. (thanks for John Connors)
644 * fixed some bugs revealed by Paul Dietz' test suite:
645 ** interval arithmetic during type derivation used inexact integer
646 to single-float coercions.
647 ** arithmetic operations involving large integers and single
648 floats give the same results in compiled and interpreted code.
649 ** deriving the result type of COERCE no longer signals an error
650 if the derived type of the second argument is a MEMBER type
651 containing invalid type specifiers.
652 ** ADJOIN with constant NIL as second argument works correctly.
653 ** FUNCTION-KEYWORDS was called SB-PCL::FUNCTION-KEYWORD-PARAMETERS.
655 changes in sbcl-1.0.18 relative to 1.0.17:
656 * minor incompatible change: SB-SPROF:WITH-PROFILING now by default
657 profiles only the current thread.
658 * minor incompatible change: changes to SYMBOL-VALUE of constants
659 defined with DEFCONSTANT now signal an error.
660 * enhancement: SB-SPROF now has support for wallclock profiling,
661 and is also able to profile specific threads. REPORT output
662 has also additional sorting options.
663 * enhancement: better pretty-printing of DEFPACKAGE forms. (Thanks
665 * optimization: structure allocation has been improved
666 ** constructors created by non-toplevel DEFSTRUCTs are ~40% faster.
667 ** out of line constructors are ~10% faster.
668 ** inline constructors are ~15% faster.
669 ** inline constructors are capable of dynamic extent allocation
670 (generally on x86 and x86-64, in some cases on other platforms
672 * optimization: simple uses of HANDLER-CASE and HANDLER-BIND no
674 * optimization: file compiler is now able to coalesce non-circular
675 lists, non-base strings, and bit-vectors. Additionally, constants
676 are never referenced through SYMBOL-VALUE at runtime.
677 * optimization: code defining methods on PRINT-OBJECT (and other
678 generic functions in the COMMON-LISP package) now loads faster.
679 * bug fix: EAI_NODATA is deprecated since RFC 3493. Stop using it
681 * bug fix: if COMPILE-FILE aborts due to an unwind, the partial
682 fasl is now deleted. (reported by Attila Lendvai)
683 * bug fix: READ-LINE always returned NIL for the last line in files.
684 (reported by Yoshinori Tahara)
685 * bug fix: more accurate disassembly annotations of foreign function
686 calls. (thanks to Andy Hefner)
687 * bug fix: trimming non-simple strings and non-string string
688 designators when the there is nothing to trim works properly.
689 (thanks to James Knight)
690 * new feature: SB-POSIX bindings for mlockall, munlockall, and setsid.
691 (thanks to Travis Cross)
692 * fixed some bugs revealed by Paul Dietz' test suite:
693 ** NIL is a valid function name (regression at 1.0.13.38)
694 ** FILL on lists was missing its return value (regression at 1.0.12.27)
695 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
696 fill pointers properly (regression at 1.0.12.23)
697 ** STRING-TRIM, STRING-LEFT-TRIM, and STRING-RIGHT-TRIM did not respect
698 displacement indices properly (regression at 1.0.12.23)
700 changes in sbcl-1.0.17 relative to 1.0.16:
701 * temporary regression: user code can no longer allocate closure
702 variable storage on stack, due to bug 419 without explicitly
703 requesting it. Please consult sbcl-devel for advice if you need to
704 use this feature in the meanwhile.
705 * new feature: runtime argument --control-stack-size can be used to
706 adjust thread default control stack size.
707 * enhancement: improved TIME output
708 ** all times are reported using the measured accuracy (milliseconds
709 for real and GC times, microseconds for everything else.)
710 ** processor cycle counts on x86 and x86-64.
711 ** interpreted forms are counted for both evaluator modes.
712 ** number of lambdas converted by the compiler is reported.
713 ** CPU percentage report (computed from real and total run time.)
714 ** more comprehensive run time reporting, using a condenced format
715 ** interperted form, lambda, and page fault counts are omitted
717 * optimization: ADJOIN and PUSHNEW are upto ~70% faster in normal
719 * optimization: APPEND is upto ~10% faster in normal SPEED policies.
720 * optimization: two argument forms of LAST are upto ~10% faster
721 in normal SPEED policies.
722 * optimization: NCONC no longer needs to heap cons its &REST list
723 in normal SPEED policies.
724 * bug fix: SB-FLUID build feature no longer breaks the build. (thanks
726 * bug fix: UNION and NUNION work with :TEST-NOT once more,
727 regression since 1.0.9.1. (thanks to Eric Marsden)
728 * bug fix: result of MAKE-ARRAY can be stack allocated - regression
729 since 1.0.15.36. (thanks to Paul Khuong)
730 * bug fix: LAST when always returned the whole list when given a bignum
731 as the second argument.
732 * bug fix: dynamic extent allocation of nested lists and vectors
733 could leak to otherwise accessible parts.
734 * bug fix: invalid optimization of heap-allocated alien variable
736 * bug fix: fasl header checking is less vulnerable to different
737 platform word lengths.
738 * bug fix: more correct assembler syntax for GNU binutils
739 2.18.50.0.4 support. (thanks to Marijn Schouten)
740 * bug fix: fix ECASE warnings from CMUCL-as-xc-host. (reported by
742 * bug fix: the fopcompiler can handle LOCALLY forms (with no
743 declarations) successfully. (reported by Attila Lendvai)
745 changes in sbcl-1.0.16 relative to 1.0.15:
746 * minor incompatible change: revert the changes to sb-posix's error
747 signaling added in 1.0.14.
748 * minor incompatible change: change PROBE-FILE back to returning
749 NIL whenever we can't get a truename, as was the case before 1.0.14.
750 * minor incompatible change: SB-BSD-SOCKETS:NAME-SERVICE-ERROR now
751 inherits from ERROR instead of just CONDITION.
752 * new feature: SB-INTROSPECT can provide source locations for instances
753 as well. (thanks to Tobias Rittweiler)
754 * optimization: binding special variables now generates smaller code
755 on threaded platforms.
756 * optimization: MEMBER and ASSOC are over 50% faster for :TEST #'EQ
757 and cases where no :TEST is given but the compiler can infer that
758 the element to search is of type (OR FIXNUM (NOT NUMBER)).
759 * optimization: better LOGNOT on fixnums.
760 * optimization: modular arithmetic for a particular requested width
761 is implemented using a tagged representation unless a better
762 representation is available.
763 * fixed bug 423: TRULY-THE and *CHECK-CONSISTENCY* interaction.
764 * bug fix: SB-BSD-SOCKETS:MAKE-INET-ADDRESS checks the input string
765 for wellformedness and returns a specialized vector. (reported by
766 Francois-Rene Rideau)
767 * bug fix: FIND-CLASS was not thread-safe. (reported by Attila Lendvai)
768 * bug fix: ~R was broken for vigtillions. (thanks to Luis Oliveira)
769 * bug fix: attempt to obtain *SCHEDULER-LOCK* recursively when
770 unscheduling timer at the same time as another timer fires.
771 * bug fix: don't reschedule timers for dead threads.
772 * bug fix: periodic polling was broken. (thanks to Espen S Johnsen)
773 * bug fix: copying output from RUN-PROGRAM to a stream signalled
774 bogus errors if select() was interrupted.
775 * enhancement: add support for fcntl's struct flock to SB-POSIX.
777 changes in sbcl-1.0.15 relative to sbcl-1.0.14:
778 * enhancement: cleaner backtraces for interactive interrupts, as
779 well as other cases where the interesting frames used to be
780 obscured by interrupt handling frames.
781 * enhancement: untracing a whole package using (UNTRACE "FOO") is
782 now supported, and tracing a whole package using (TRACE "FOO") now
783 traces SETF-functions as well.
784 * enhancement: implement SB-POSIX:MKTEMP and SB-POSIX:MKDTEMP.
785 * SB-DEBUG:PRINT-FRAME-CALL now prints the entry-point kind even
786 when SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS* is NIL.
787 * unreadably printed representation of hash-tables now includes
789 * bug fix: partially fixed #188: type propagation from assignments
790 is now more efficient.
791 * bug fix: fixed #407: (COERCE X 'SINGLE-FLOAT) and (COERCE X
792 'DOUBLE-FLOAT) are not flushable.
793 * bug fix: on x86 and x86-64 pointer based EQ-hashing now uses the
794 full address of the object, and none of the tag bits.
795 * bug fix: readably printing hash-tables now respects other printer
796 control variables. (reported by Cedric St-Jean)
797 * bug fix: compiler gave a bogus STYLE-WARNING for the :SYNCHRONIZED
798 keyword with MAKE-HASH-TABLE.
799 * bug fix: export SB-POSIX:MKSTEMP.
800 * bug fix: SORT was not interrupt safe.
801 * bug fix: XREF accounts for the last node of each basic-block as
803 * bug fix: MAKE-INSTANCE optimizations interacted badly with
804 non-keyword :DEFAULT-INITARGS in the presence of :BEFORE/:AFTER
805 methods on SHARED-INITIALIZE. (thanks to Matt Marjanovic)
806 * bug fix: the CTOR optimization for MAKE-INSTANCE should no longer
807 create obsolete instances in the case of redefinition or
808 obsoletion of a superclass. (thanks to Andy Hefner)
809 * bug fix: Support for the Alpha architecture has been revived; it had
810 suffered somewhat from lack of maintenance since sbcl-1.0.
811 * improvements to the Windows port:
812 ** The system detects the codepage to use at startup, instead of
813 using the value from the saved core. (thanks to Kei Suzuki)
815 changes in sbcl-1.0.14 relative to sbcl-1.0.13:
816 * new feature: SB-EXT:*EXIT-HOOKS* are called when the process exits
817 (see documentation for details.)
818 * revived support for OpenBSD (contributed by Josh Elsasser)
819 * partially fixed bug #108: ROOM no longer suffers from occasional
820 (AVER (SAP= CURRENT END)) failures.
821 * fixed bug #402: proclaimed non-standard declarations in DEFMETHOD
822 bodies no longer cause a WARNING to be signalled. (reported by
824 * bug fix: (TRUNCATE X 0) when X is a bignum now correctly signals
825 DIVISION-BY-ZERO. Similarly for MOD and REM (which suffered due to
826 the bug in TRUNCATE.) (reported by Michael Weber)
827 * bug fix: SB-SPROF:REPORT no longer signals an error if there are
828 no samples. (reported by Andy Hefner)
829 * bug fix: functions compiled using (COMPILE NIL '(LAMBDA ...))
830 no longer appear as (NIL ...) frames in backtraces.
831 * bug fix: RESOLVE-CONFLICT (and the other name conflict machinery)
832 is now actually exported from SB-EXT as documented. (reported by
834 * bug fix: sb-aclrepl now correctly understands how to inspect
835 single-floats on 64-bit platforms where single-floats are not boxed.
836 * bug fix: SB-MOP:CLASS-SLOTS now signals an error if the class has not
837 yet been finalized. (reported by Levente Meszaros)
838 * bug fix: CLOSE :ABORT T behaves more correctly on Windows.
839 * DESCRIBE and (DOCUMENTATION ... 'OPTIMIZE) describe meaning of
840 SBCL-specific optimize qualities.
842 changes in sbcl-1.0.13 relative to sbcl-1.0.12:
843 * minor incompatible change: RUN-PROGRAM now uses execvp(3) to find
844 an executable in the search path, and does so in the child
845 process's PATH. The function FIND-EXECUTABLE-IN-SEARCH-PATH has
846 been removed; it can be found in the CVS history, for somebody who
847 needs that search behavior (see the manual).
848 * minor incompatible change: compiler policy re. weakening type
849 checks has changed: now type checks are weakened only if SAFETY < 2
851 * SB-EXT:NATIVE-NAMESTRING takes a new keyword AS-FILE, forcing
852 unparsing of directory pathnames as files. Analogously,
853 SB-EXT:PARSE-NATIVE-NAMESTRING takes an AS-DIRECTORY, forcing a
854 filename to parse into a directory pathname.
855 * enhancement: implicit generic function creation now signals a
856 specific style-warning IMPLICIT-GENERIC-FUNCTION-WARNING, which
857 users can bind handlers for and muffle around calls to LOAD.
858 * enhancement: RUN-PROGRAM allows unicode arguments and environments
859 to be used (using the default stream external format), and allows
860 non-simple strings to be used. (thanks to Harald Hanche-Olsen)
861 * optimization: COPY-SEQ, FILL, and SUBSEQ are 30-80% faster for
862 strings and vectors whose element-type or simplicity is not fully
863 known at compile-time.
864 * optimization: STRING-TRIM and related functions no longer allocate
865 a new string when no trimming needs to be performed. These functions
866 are also faster than before when the input string has been declared
868 * optimization: READ-SEQUENCE on simple-strings is up to 80% faster.
869 * optimization: READ-LINE is significantly faster for files containing
871 * optimization: non-open coded uses of character comparison operators
872 (e.g. char=) no longer cons when called with more than one parameter
873 on platforms supporting dynamic-extent allocation.
874 * bug fix: READ-SEQUENCE on composite stream wrapping a Gray stream
875 with STREAM-ELEMENT-TYPE (UNSIGNED-BYTE 8) signalled an error.
876 * bug fix: COPY-SEQ on lists did not signal a type-error on improper
878 * bug fix: some sequence functions elided bounds checking when
880 * bug fix: too liberal weakening of union-type checks when SPEED >
882 * bug fix: more bogus fixnum declarations in ROOM implementation
885 changes in sbcl-1.0.12 relative to sbcl-1.0.11:
886 * new feature: MAKE-HASH-TABLE now experimentally accepts a
887 :SYNCHRONIZED argument, which makes the hash-table safe for
888 concurrent accesses (but not iteration.) See also:
889 SB-EXT:WITH-LOCKED-HASH-TABLE, and
890 SB-EXT:HASH-TABLE-SYNCHRONIZED-P.
891 * optimization: CONCATENATE on strings is an order of magnitude faster
892 in code compiled with (> SPEED SPACE).
893 * optimization: SUBSEQ is ~50% faster on lists.
894 * bug fix: bug 417 fixed -- source location reporting is now more robust.
895 * bug fix: SUBSEQ on a list will now correctly signal an error if if
896 END is smaller then START.
897 * bug fix: SB-PROFILE will no longer report extra consing for nested
898 calls to profiled functions.
899 * bug fix: ROOM implementation had bogus fixnum declarations which
900 could cause type-errors when calling ROOM on large images.
901 * bug fix: if file compilation is aborted, the partial fasl is now
902 deleted, and COMPILE-FILE returns NIL as the primary value.
903 * bug fix: number of thread safety issues relating to SBCL's internal
904 hash-table usage have been fixed.
905 * bug fix: SB-SYS:WITH-PINNED-OBJECTS could cause garbage values to
906 be returned from its body when the values were being returned
907 using unknown-values return convection and the W-P-O was wrapped
908 inside an UNWIND-PROTECT.
909 * bug fix: sb-posix should now compile again under Windows, enabling
912 changes in sbcl-1.0.11 relative to sbcl-1.0.10:
913 * incompatible change: hash-table accessor functions are no longer
914 automatically protected by locks. Concurrent accesses on the same hash-table
915 from multiple threads can give inconsistent results or even corrupt the
916 hash-table completely. Multi-threaded applications should do their own
917 locking at the correct granularity. In the current implementation it is
918 still safe to have multiple readers access the same table, but it's not
919 guaranteed that this property will be maintained in future releases.
920 * minor incompatible change: (SETF MUTEX-VALUE) is not longer supported,
921 and will signal an error at runtime.
922 * enhancement: SB-THREAD package now exports a semaphore interface.
923 * enhancement: CONS can now stack-allocate on x86 and
924 x86-64. (Earlier LIST and LIST* supported stack-allocation, but
926 * enhancement: nested lists can now be stack allocated on
927 platforms providing stack allocation support.
928 * enhancement: dynamic-extent support has been extended to support
929 cases where there are multiple possible sources for the stack
931 * optimization: RELEASE-MUTEX no longer needs to perform a syscall
932 if the mutex is uncontested on Linux.
933 * bug fix: symbol-macro expansion now uses the *MACROEXPAND-HOOK*
934 as specified by the CLHS. (thanks to Tobias Rittweiler)
935 * bug fix: NaN comparison now works on x86-64.
936 * bug fix: CLOSE :ABORT T on a stream with pending output now
938 * bug fix: instances of non-standard metaclasses using standard
939 instance structure protocol sometimes missed the slot type checks
941 * bug fix: known functions can be inlined in high-debug code.
943 changes in sbcl-1.0.10 relative to sbcl-1.0.9:
944 * minor incompatible change: the MSI installer on Windows no longer
945 associates .lisp and .fasl files with the installed SBCL.
946 * minor incompatible change: :UNIX is no longer present in *FEATURES*
947 on Windows. (thanks to Luis Oliviera)
948 * new feature: SB-CLTL2 contrib module now implements
949 FUNCTION-INFORMATION. (thanks to Larry D'Anna)
950 * optimization: scavenging weak pointers is now more efficient,
951 requiring O(1) instead of O(N) per weak pointer to identify
952 scanvenged vs. unscavenged pointers. (thanks to Paul Khuong)
953 * optimization: typechecking (SETF SLOT-VALUE) is now ~5x faster in
954 method bodies using constant slot-names when the first argument is
955 a specializer parameter for the method.
956 * optimization: SLOT-VALUE &co are now ~50% faster for variable slot
957 names, when the class of the instance is a direct instance
958 STANDARD-CLASS or FUNCALLABLE-STANDARD-CLASS (making them only 3x
959 as slow as the constant slot-name case.)
960 * optimization: member type construction is now O(N) instead
962 * optimization: UNION and NUNION are now O(N+M) for large
963 inputs as long as the :TEST function is one of EQ, EQL, EQUAL, or
965 * enhancement: DEFINE-MODIFY-MACRO lambda-list information is
966 now more readable in environments like Slime which display it.
967 (thanks to Tobias C. Rittweiler)
968 * bug fix: SB-EXT:COMPARE-AND-SWAP was non-atomic unless the compiler
969 was able to infer the correct argument type for the object on which
970 the CAS operation was being performed.
971 * bug fix: copy propagation interfered with parallel assignment
972 semantics in local calls. (reported by Paul Khuong)
973 * bug fix: the signed modular fixnum shift compiled to wrong code on
974 x86 and x86-64. (spotted by a slight modification to some of
977 changes in sbcl-1.0.9 relative to sbcl-1.0.8:
978 * minor incompatible change: SB-SYS:OUTPUT-RAW-BYTES is deprecated.
979 * enhancement: SB-EXT:FINALIZE accepts a :DONT-SAVE keyword argument,
980 indicating the finalizer should be cancelled when SAVE-LISP-AND-DIE
982 * enhancement: default PRINT-OBJECT methods for classes, slot-definitions,
983 and generic function now print the object identity for anonymous
984 instances. (thanks to Attila Lendvai)
985 * enhancement: as an extension to MOP, SBCL now supports SETF of
986 STANDARD-INSTANCE-ACCESS and FUNCALLABLE-STANDARD-INSTANCE-ACCESS.
987 (thanks to Attila Lendvai)
988 * enhancement: sb-cover has an alternate annotation mode which puts
989 the form annotations at the car of the form, instead of annotating
990 it completely. The benefit of this mode is that it shows better
991 which forms were instrumented by the compiler.
992 * bug fix: new compiler transforms for MEMBER and ASSOC were affected
993 by printer control variables. (reported by Dan Corkill)
994 * bug fix: system leaked memory when delayed output was performed by
995 the OS in smaller chunks then expected. (thanks to David Smith)
996 * bug fix: system leaked memory when file streams were not closed
998 * bug fix: large objects written to slow streams that were modified
999 after the write could end up with the modified state written to
1000 the underlying file descriptor.
1001 * bug fix: multiple threads operating in parallel on the same stream
1002 could cause buffer-overflows.
1003 * bug fix: source location information is stored correctly
1004 (broken since 1.0.6). This bug would generally show up as the
1005 Slime debugger highlighting the wrong form when the sldb-show-source
1007 * bug fix: Branch forms are again annotated as branches in the sb-cover
1009 * bug fix: GCD on MOST-NEGATIVE-FIXNUM no longer causes an infinite loop
1010 on x86-64. (reported by Gregory Vanuxem)
1011 * bug fix: EQUALP could return wrong results for structures with raw
1012 slots (slots with a :TYPE of SINGLE-FLOAT, DOUBLE-FLOAT, or a machine
1013 word). (reported by Vjacheslav Fyodorov)
1014 * bug fix: sb-sprof sampling didn't work on non-x86oid platforms. (patch
1017 changes in sbcl-1.0.8 relative to sbcl-1.0.7:
1018 * enhancement: experimental macro SB-EXT:COMPARE-AND-SWAP provides
1019 atomic compare-and-swap operations on threaded platforms.
1020 * enhancement: experimental function SB-EXT:RESTRICT-COMPILER-POLICY
1021 allows assigning a global minimum value to optimization qualities
1022 (overriding proclamations and declarations).
1023 * enhancement: closed over variables can be stack-allocated on x86
1025 * performance bug fix: GETHASH and (SETF GETHASH) are once again
1027 * optimization: slot definition lookup is now O(1). This speeds up
1028 eg. SLOT-VALUE and (SETF SLOT-VALUE) with variable slot names.
1029 * optimization: STRING-TO-OCTETS is now up to 60% faster for UTF-8.
1030 * optimization: ASSOC and MEMBER can now be open-coded for all
1031 combinations of keyword arguments when second argument is constant
1032 and SPEED >= SPACE. In other cases a specialized version is
1034 * bug fix: using obsoleted structure instances with TYPEP and
1035 generic functions now signals a sensible error.
1036 * bug fix: threads waiting on GET-FOREGROUND can be interrupted.
1037 (reported by Kristoffer Kvello)
1038 * bug fix: backtrace construction is now more careful when making
1039 lisp-objects from pointers on the stack, to avoid creating bogus
1040 objects that can be seen by the GC.
1041 * bug fix: defaulting of values in contexts expecting more than 7
1042 variables now works on x86-64. (reported by Christopher Laux)
1043 * bug fix: modifications to packages (INTERN, EXPORT, etc) are now
1045 * bug fix: (SETF SYMBOL-PLIST) no longer allows assigning a non-list
1046 as the property-list of a symbol.
1047 * bug fix: DEFMETHOD forms with CALL-NEXT-METHOD in the method body,
1048 in EVAL-WHEN forms with both :COMPILE-TOPLEVEL and :LOAD-TOPLEVEL
1049 situations requested, are once again file-compileable. (reported
1052 changes in sbcl-1.0.7 relative to sbcl-1.0.6:
1053 * MOP improvement: support for user-defined subclasses of
1054 SB-MOP:SPECIALIZER has been enhanced. The experimental interface
1055 function SB-PCL:MAKE-METHOD-SPECIALIZERS-FORM, called as part of
1056 the expansion of DEFMETHOD, is responsible for generating a form
1057 which creates a list of specializers when evaluated. Additional
1058 functions SB-PCL:[UN]PARSE-SPECIALIZER-USING-CLASS provide
1059 debugging and introspective support.
1060 * minor incompatible change: the (unsupported) spinlock interface
1061 has changed: free spinlock now has the value NIL, and a held spinlock
1062 has the owning thread as its value.
1063 * enhancement: WITHOUT-INTERRUPTS now binds ALLOW-WITH-INTERRUPTS and
1064 WITH-LOCAL-INTERRUPTS as local macros. Refer to documentation string
1066 * enhancement: name of a socket-stream is now "a socket" instead of
1067 "a constant string".
1068 * enhancement: SB-POSIX now supports lockf(). (Thanks to Zach Beane.)
1069 * enhancement: SB-POSIX now supports getcwd(). (Thanks to Tassilo Horn.)
1070 * enhancement: SB-INTROSPECT:FUNCTION-ARGLIST shows nicer argument lists
1071 for generic functions. (Thanks to Tobias C. Rittweiler)
1072 * optimization: bignum printing speed has been improved by 20-40%
1073 (depending on the bignum size.)
1074 * bug fix: WITH-MUTEX and WITH-RECURSIVE-LOCK are now interrupt safe
1076 * bug fix: the cache used by the CLOS to store precomputed effective
1077 methods, slot offsets, and constant return values is now thread and
1079 * bug fix: generic function dispatch function updating is now thread
1080 and interrupt safe (in the sense that the known issues have been
1082 * bug fix: ADD/REMOVE-METHOD is now thread and interrupt safe.
1083 * bug fix: interning EQL-specializers is now thread and interrupt safe.
1084 * bug fix: asdf systems with dependencies to the SB-POSIX or
1085 SB-BSD-SOCKETS contribs can be loaded with :FORCE T.
1086 * bug fix: interrupt safety of applicable method computation has been
1089 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
1090 * new contrib: sb-cover, an experimental code coverage tool, is included
1091 as a contrib module.
1092 * optimization: STRING-TO-OCTETS for unibyte encodings and UTF-8 is
1093 significantly faster.
1094 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1095 produce more efficient code on x86-64 if the compiler can determine
1096 that (+ INDEX <constant>) does not require a bounds check and FOO
1097 has an element type at least 8 bits wide.
1098 * enhancement: a new, experimental synchronous timeout facility is
1099 provided. Refer to SB-SYS:WITH-DEADLINE for details.
1100 * enhancement: when a symbol name conflict error arises, the
1101 conflicting symbols are always printed with a package prefix.
1102 (thanks to Kevin Reid)
1103 * enhancement: stepping is now once again supported on the SPARC and
1104 MIPS platforms. (It is also now more likely to work on CheneyGC
1106 * enhancement: sb-sprof can now also track and report accurate call
1108 * bug fixes: the treatment of non-standard subclasses of
1109 SB-MOP:SPECIALIZER is more correct.
1110 * incompatible change: PURIFY no longer copies the data from the
1111 dynamic space into the static and read-only spaces on platforms
1112 that use the generational garbage collector
1113 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
1115 * bug fix: GC race condition occasionally resulting in crashes with
1116 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
1118 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
1120 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
1121 a STYLE-WARNING to be signalled (regression from 1.0.4.)
1122 * bug fix: an asynchronous interrupt could previously leave the
1123 system running with GC inhibited.
1124 * bug fix: a DECLARE form evaluated at top-level now causes an error
1125 rather than silently (or verbosely) returning NIL.
1126 * bug fix: trying to dissassemble functions compiled at high DEBUG could
1127 result in a error being signalled due to source form lookup errors.
1128 (reported by Peter Graves)
1130 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
1131 * incompatible change: removed writer methods for host-ent-name,
1132 host-ent-addresses -- changing the values did not update the DNS
1134 * minor incompatible change: changed experimental JOIN-THREAD interface
1135 * documentation: the manual now lists reader and writer methods
1136 in class slot documentation sections. (thanks to Richard M Kreuter)
1137 * documentation: unwinding from asyncronous events has been
1138 documented as unsafe.
1139 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
1140 in multithreaded application code.
1141 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
1142 platforms. (thanks to James Anderson for the optimization hint)
1143 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
1145 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
1146 variants no longer cons.
1147 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
1148 their NOT- variants no longer cons.
1149 * optimization: EQUAL hash tables no longer use SXHASH for objects
1150 of all data types, but instead use an EQL hash for types for which
1151 EQUAL is the same as EQL.
1152 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
1153 are significantly faster.
1154 * optimization: new STRING-OUTPUT-STREAM implementation is much
1155 faster for large outputs and conses 30% less on average.
1156 * enhancement: XREF information is now collected for references made
1157 to global variables using SYMBOL-VALUE and a constant argument.
1158 * enhancement: SIGINT now causes a specific condition
1159 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
1160 * bug fix: FILE-POSITION used to signal an error in some cases where
1161 ANSI requires it to return NIL.
1162 * bug fix: ADJUST-ARRAY is now interrupt-safe.
1163 * bug fix: adding and removing fd-handlers is now interrupt-safe.
1164 * bug fix: inlined calls to C now ensure 16byte stack alignment on
1166 * bug fix: bad type declaration in the CLOS implementation has
1167 been fixed. (reported by James Anderson)
1168 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
1169 (thanks to Lutz Euler)
1170 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
1171 required by the CLHS. (reported by Samium Gromoff)
1172 * bug fix: dead unbound variable references now signal an error.
1173 (reported by Marco Monteiro)
1174 * bug fix: / with an unused value was being deleted in safe code.
1175 (thanks to Marco Monteiro and Kevin Reid)
1176 * bug fix: number of characters that can be written onto a single
1177 line in a file is unlimited.
1178 * bug fix: some GC deadlocks caused by asynchronous interrupts have
1179 been fixed by inhibiting interrupts for when GC is disabled.
1180 * bug fix: some interrupt safety issues with GETHASH, (SETF
1181 GETHASH), CLRHASH and REMHASH have been fixed.
1182 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
1183 specifier no longer causes infinite recursion.
1184 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
1185 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
1186 * bug fix: an &environment argument with the correct variable information
1187 is passed to macros that are expanded during byte compilation.
1188 (reported by Samium Gromoff)
1189 * bug fix: a logic error was causing the hash function for bignums to
1190 have excessive amounts of collisions. (reported by Faré Rideau)
1191 * bug fix: modifying the contents of an array could change the return
1192 value of SXHASH on that array, which is only allowed for strings
1193 and bit vectors. (bug introduced in 0.9.16)
1194 * improvement: the x86-64/darwin port now passes all tests (except
1195 for the debugger tests) but should still be considered
1196 experimental until this is fixed.
1197 * improvement: a style-warning is signaled for CASE (etc) clauses with
1198 duplicate keys. (thanks to Kevin Reid)
1199 * improvement: macos/x86 and macos/x86-64 now use mach exception
1200 handlers for dealing with illegal instructions (for trapping and
1201 error handling) and memory protection violations (for GC).
1203 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
1204 * new platform: experimental support for x86-64/darwin (MacOS).
1205 * incompatible change: the thread-safe (on most platforms) getaddrinfo
1206 and getnameinfo sockets functions are used instead of gethostbyaddr
1207 and gethostbyname, on platforms where the newer functions are available.
1208 As a result, the ALIASES field of HOST-ENT will always be NIL on these
1210 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
1211 don't print the startup banner, but behave as if --noinform was passed
1212 as a command line argument. (thanks to Kevin Reid)
1213 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
1214 * optimization: code using alien values with undeclared types is much faster.
1215 * optimization: the compiler is now able to open code SEARCH in more cases.
1216 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
1217 * bug fix: using standardized COMMON-LISP special variables as loop
1218 variables no longer signals bogus package lock violations. (reported
1220 * bug fix: declaring local loop variables to be of a range-limited type
1221 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
1222 (reported by Andras Simon)
1223 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
1224 bugs remain on x86-64.)
1225 * bug fix: the #= and ## reader macros now interact reasonably with
1226 funcallable instances.
1227 * bug fix: type-checks for function arguments were compiled using the
1228 compiler policy settings of the wrong lexical environment (in 1.0.2
1230 * bug fix: SHADOW accepts characters as string designators, as required
1231 by the spec (thanks to Eric Marsden)
1232 * bug fix: fixed GC safety issues when foreign functions are called with
1233 non-base strings as arguments
1234 * bug fix: more consistent error output for fatal-compiler-warnings, like
1236 * bug fix: functions with proper names were showing up as NIL in
1237 backtraces (reported by Edi Weitz, regression in 1.0.2)
1239 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
1240 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
1241 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
1242 produce more efficient code on the x86 if the compiler can determine
1243 that (+ INDEX <constant>) does not require a bounds check and FOO
1244 has an element type at least 8 bits wide.
1245 * bug fix: references to undefined variables are handled the same way
1246 in toplevel forms as in the normal compiler
1247 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
1249 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
1250 (thanks to Jon Buller)
1251 * improvement: faster compilation times for complex functions
1252 * improvement: added readlink support to SB-POSIX (thanks to Richard
1255 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
1256 * improvement: experimental support for mach exception handling on
1257 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
1259 * improvement: support for GBK external format.
1260 (thanks to Chun Tian (binghe))
1261 * improvement: the debugger now displays variables that have been closed
1262 over, in code compiled with (DEBUG 2) or higher
1263 * improvement: support for executable cores on NetBSD (thanks to
1265 * new feature: added a RESTART-FRAME debugger command
1266 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
1267 be used to provide an implementation for FILE-POSITION on Gray streams
1268 (thanks to Eric Marsden)
1269 * new feature: add syslog, openlog and closelog support to SB-POSIX
1270 (thanks to Richard Kreuter)
1271 * optimization: the function call overhead in code compiled with
1272 a high DEBUG optimization setting is significantly
1273 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
1274 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
1275 (thanks to Tony Martinez)
1276 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
1277 evaluated once (reported by Kevin Reid)
1278 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
1279 works again (thanks to Kilian Sprotte)
1280 * bug fix: an error is signaled for tagbodies with duplicate tags
1281 (thanks to Stephen Wilson)
1282 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
1283 * bug fix: Win32 port can now handle foreign code unwinding Lisp
1284 stack frames from alien callbacks.
1285 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
1286 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
1287 65k pages (thanks to David Woodhouse)
1288 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
1290 changes in sbcl-1.0.1 relative to sbcl-1.0:
1291 * new platform: FreeBSD/x86-64, including support for threading.
1292 * new feature: the compiler stores cross-referencing information
1293 about function calls (who-calls), macroexpansion (who-macroexpands)
1294 and special variables (who-binds, who-sets, who-references) for code
1295 compiled with (< SPACE 3). This information is available through the
1296 sb-introspect contrib.
1297 * new feature: users may subclass SEQUENCE, and have instances of
1298 these classes interoperate with standard Common Lisp functions if
1299 a number of methods are defined. (This feature is experimental
1300 and the interface subject to change based on feedback from SBCL
1301 users and the general community)
1302 * improvement: sb-sprof traces call stacks to an arbitrary depth on
1303 x86/x86-64, rather than the previous fixed depth of 8
1304 * improvement: another pthread back-end of mutex "pthread-futex".
1305 * bug fix: non-ascii command-line arguments are processed correctly
1306 (thanks to Yaroslav Kavenchuk)
1307 * bug fix: non-required arguments were not passed correctly when a method
1308 defined using DEFMETHOD was called from a mop-generated method using
1309 CALL-NEXT-METHOD (reported by Pascal Costanza)
1310 * bug fix: recursion is now permitted in accessors through
1311 SLOT-UNBOUND. (reported by Pascal Costanza)
1312 * bug fix: an error was signaled at startup if the HOME environment
1313 variable was defined, but had an empty value (reported by Peter Van Eynde)
1314 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
1315 signal a PROGRAM-ERROR, not a BUG.
1316 * bug fix: SB-POSIX:READDIR works when built with large file support.
1317 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
1319 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
1320 for better automatic indentation support. (thanks to Matt Pillsbury)
1321 * optimization: loading generic functions no longer takes O(n^2) time,
1322 proportional to the amount of methods in the generic function
1323 (reported by Todd Sabin and Jeremy Brown)
1324 * optimization: the FIND and POSITION family of sequence functions
1325 are significantly faster on arrays whose element types have been
1327 * improvements to the Windows port:
1328 ** Intermittent heap corruption problems have been fixed. (thanks
1329 to Alastair Bridgewater)
1330 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
1332 ** Lisp is able to unwind foreign exception frames from alien
1333 callbacks. (thanks to Alastair Bridgewater)
1335 changes in sbcl-1.0 relative to sbcl-0.9.18:
1336 * improvement: experimental support for threading on FreeBSD/x86.
1337 (thanks to NIIMI Satoshi)
1338 * improvement: runtime option --dynamic-space-size can be used
1339 to set the size of the dynamic space reserved on startup.
1340 * improvement: floating point modes in effect are now saved in
1341 core, and restored on startup.
1342 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
1343 startup, not time since first call to GET-INTERNAL-REAL-TIME.
1344 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
1345 threads are not running after *SAVE-HOOKS* have run.
1346 * improvement: writes to CLOS instance slots are type-checked in code
1347 compiled with (SAFETY 3)
1348 * improvement: floating-point exception handling on FreeBSD (thanks to
1350 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
1351 (thanks to Zach Beane)
1352 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
1354 * improvement: added support for the Shift-JIS external format.
1355 (contributed by NIIMI Satoshi)
1356 * improvement: callbacks are supported on Linux/PPC. (thanks to
1358 * bug fix: compiler bug triggered by a (non-standard) VALUES
1359 declaration in a LET* was fixed. (reported by Kaersten Poeck)
1360 * bug fix: file compiler no longer confuses validated and already
1361 dumped structurres. (reported by Kaersten Poeck)
1362 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
1363 fill-pointer signals a type-error as required. (thanks to
1365 * bug fix: disassemly of funcallable instances works.
1366 * bug fix: single stepping on PPC.
1367 * bug fix: fix thread-safety problems in the type system (generally
1368 manifesting as nonsensical errors like "STRING is a bad type specifier
1369 for sequences" or "The value 1 is not of type FIXNUM")
1370 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
1371 (reported by Josip Gracin)
1372 * bug fix: an error is signaled for attempts to displace arrays with
1373 incompatible element types (thanks to Mario Mommer)
1374 * bug fix: more correct handling of wide characters in debug info
1375 (bug reported by Attila Lendvai and fixed by Juho Snellman)
1376 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
1377 and don't cause extra consing
1378 * optimization: MAP and MAP-INTO are significantly faster on vectors
1379 whose elements types have been declared.
1380 * Improvements to SB-SPROF:
1381 ** Support for allocation profiling
1382 ** Reduced profiling overhead, especially for long profiling runs
1383 * Improvements to the Windows port:
1384 ** floating point exceptions are now reported correctly.
1385 ** stack exhaustion detection works partially.
1386 ** more accurate GET-INTERNAL-REAL-TIME.
1387 ** better RUN-PROGRAM behaviour in case of errors in the child
1389 ** PROBE-FILE now simplifies pathnames correctly.
1390 ** DIRECTORY now works correctly with :WILD-INFERIORS.
1391 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
1392 1st 1970 (although time timezone data will be unreliable).
1393 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
1395 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
1396 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
1397 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
1399 * bug fix: two potential GC deadlocks affecting threaded builds.
1400 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
1401 returns T (reported by Anton Kazennikov)
1402 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
1403 with non-variable places
1404 * bug fix: remove a race condition in the setting of
1405 funcallable-instance functions, this should make threaded CLOS
1406 code more stable against memory faults.
1407 * bug fix: corruption of specials when unbinding is interrupted by an
1408 asynchronous unwind (reported by Hannu Koivisto)
1409 * improvement: the debugger will now also display local variables that
1410 are only used once, for code compiled with a DEBUG optimization quality
1413 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
1414 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
1415 * incompatible change: External-format support for FFI calls. The
1416 SB-ALIEN:C-STRING no longer implies an ASCII
1417 external-format. Instead the string is subject to external-format
1418 conversion. Additionally return values of type SB-ALIEN:C-STRING
1419 are by default of type (SIMPLE-ARRAY CHARACTER), not
1420 SIMPLE-BASE-STRING. For an alien type that behaves like the old
1421 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
1422 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
1423 * incompatible change: SB-EXT package no longer contains the
1424 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
1425 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
1427 * incompatible change: the single-stepper is no longer available
1428 on Alpha, Mips and Sparc platforms.
1429 * minor incompatible change: the direct superclasses of
1430 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
1431 not (STANDARD-OBJECT FUNCTION). This makes the
1432 class-precedence-lists of GENERIC-FUNCTION and
1433 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
1435 * minor incompatible change: the default stream external format on
1436 non-unicode SBCL is no longer detected from the locale, but is always
1438 * new feature: Add a version of evaluator that uses an interpreter instead
1439 of the compiler. EVAL still uses the compiler by default, to switch it
1440 to use the interpreter, set the value of the variable
1441 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
1442 * minor incompatible change: the single-stepper REPL has been merged
1443 with the normal debugger (see the "Stepping" heading of the debugger help
1444 for more details). The debugger command STEP will no longer switch
1445 to the single-stepper REPL.
1446 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
1447 for a type now works.
1448 * bug fix: loading of default sysinit file works. (thanks to Leonid
1450 * bug fix: better detection of circularities in the file-compiler.
1451 (reported by Marco Monteiro)
1452 * bug fix: the CL pathname functions now work with files that have
1453 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
1454 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
1455 systems with Unix98 pty semantics.
1456 * bug fix: ASDF-INSTALL will now work with bsd tar.
1457 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
1459 * bug fix: timers expiring in dead threads no longer cause a
1460 type-error (reported by Paul "Nonny Mouse").
1461 * bug fix: thanks to more lightweight single-stepper instrumentation,
1462 code compiled with (DEBUG 3) will compile and execute significantly faster,
1463 and will have more accurate type-inferencing than before
1464 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
1465 whose bindings are modified
1466 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
1467 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
1468 ** replace dummy implementations of CL:MACHINE-INSTANCE and
1469 CL:SOFTWARE-VERSION with proper version
1471 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
1472 * feature: implemented the READER-METHOD-CLASS and
1473 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
1474 as specified by AMOP.
1475 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
1477 * optimization: faster LOGCOUNT implementation on x86 and x86-64
1478 (thanks to Lutz Euler)
1479 * optimization: hashing of general arrays and vectors has been
1480 improved. (reported by Any Fingerhut)
1481 * enhancement: SB-INTROSPECT is now able to find definitions of
1482 profiled functions. (thanks to Troels Henriksen)
1483 * enhancement: compiler-macro expansion applies now to FUNCALL forms
1484 as well, allowing compiler-macros for SETF-functions to expand.
1485 * enhancement: step-instrumentation no longer wraps known
1486 single-value functions with multiple-value context, allowing
1487 better type inference.
1488 * fixed bug #337: use of MAKE-METHOD in method combination now works
1489 even in the presence of user-defined method classes. (reported by
1490 Bruno Haible and Pascal Costanza)
1491 * fixed bug #339(c): if there are applicable methods not part of any
1492 long-form method-combination group, call INVALID-METHOD-ERROR.
1493 (reported by Bruno Haible)
1494 * fixed bug #361: the :FUNCTION initarg in the protocol for
1495 initialization of methods can now be used to override
1496 internally-produced optimized functions. (reported by Bruno
1498 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
1499 system-provided lambda expression no longer cause warnings about
1500 unbound #:|pv-table| symbols.
1501 * bug fix: improved the handling of type declarations and the
1502 detection of violations for keyword arguments with non-constant
1504 * bug fix: potentially erronous calls to PATHNAME and
1505 MERGE-PATHNAMES were being flushed in some cases.
1506 (reported by Richard Kreuter)
1507 * bug fix: compiled calls to TYPEP were mishandling obsolete
1508 instances. (reported by James Bielman and Attila Lendvai)
1509 * bug fix: format strings with ~> without matching ~< no longer
1510 trigger an AVER, but signal an understandable error instead.
1511 (reported by Antonio Martinez)
1512 * bug fix: specifying an output-file without a pathname-type for
1513 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
1514 of input-file instead of "fasl". (reported by Robert Dodier)
1515 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
1516 (reported by James Y Knight).
1517 * bug fix: compiler-macros-function did not consider the environment
1518 argument for shadowing by local functions.
1519 * bug fix: compiler-macros expansion was inhibited by local INLINE
1521 * bug fix: inline expansions of known functions were subject to
1522 step-instrumentation in high debug policies, leading to problems
1523 with type-inference.
1524 * bug fix: compiler failed to differentiate between different CONS
1525 types in some cases.
1526 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
1527 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
1528 * bug fix: #368: incorrect use of expressed vs. upgraded array
1530 * bug fix: #306a: more precise unions of array types.
1531 * thread-safety improvements:
1532 ** CONDITION-WAIT could return early on Linux, if the thread was
1533 interrupted and subsequently continued with SIGCONT.
1534 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
1536 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
1537 * added support for the ucs-2 external format. (contributed by Ivan
1539 * minor incompatible change: pretty printing of objects of type
1540 (cons symbol) is, in the default pprint-dispatch-table, now
1541 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
1543 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
1544 called later in a class's lifetime, possibly as late as when the
1545 first instance of the class is created. Previously,
1546 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
1547 class became finalizeable.
1548 * fixed bug: FILE-POSITION sometimes returned inconsistent results
1549 for multibyte external-format streams. (thanks to "vbzoli")
1550 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
1551 with :ALLOCATION :CLASS inherited from superclasses of the
1553 * fixed bug: anonymous classes can now be created using the :NAME
1554 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
1555 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
1556 * fixed bug: core-files saved with :EXECUTABLE T can again be
1557 executed when SBCL_HOME isn't set. (reported by James Knight)
1558 * fixed bug: toplevel LOCALLY forms with declarations could
1559 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
1560 * fixed bug: printing from several different threads using different
1561 values of *print-case* could cause invalid output, due to
1562 some internal special variables of the printer not being bound
1563 thread-locally (reported by Max Mikhanosha)
1564 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
1565 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
1566 (reported by Pascal Costanza)
1567 * fixed bug: FINALIZE-INHERITANCE is called from
1568 REINITIALIZE-INSTANCE on classes when the class has previously
1569 been finalized, as required by AMOP.
1570 * minor code generation optimizations:
1571 ** better register allocation in CLOS dispatching functions
1572 ** overflow detection when coercing signed bytes to fixnums on x86-64
1573 ** is now implemented with one IMUL instruction instead of three shifts
1574 ** more efficient bit-vector access on x86 and x86-64
1575 ** more efficient access to raw structure slots on x86 and x86-64
1576 * fixed some bugs revealed by Paul Dietz' test suite:
1577 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
1578 return its argument.
1580 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
1581 * feature: thread support on Solaris/x86, and experimental thread support
1583 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
1585 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
1586 default method for SLOT-UNBOUND.
1587 * minor incompatible change: prevent the user from specializing the
1588 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
1589 somewhat counter to the intent of the protocol, I (CSR) think, and
1590 additionally it just doesn't work in SBCL as currently
1591 implemented, thanks to optimizations (that are always valid for
1592 the other three SLOT-VALUEish functions, but not for the setter).
1593 * minor incompatible change: the :SB-LDB feature is now enabled by
1594 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
1595 the low-level debugger.
1596 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
1597 from SYNONYM-STREAM and TWO-WAY-STREAM provided they can be decomposed
1598 down to an SB-SYS:FD-STREAM, allowing direct communication in
1599 more cases. Temporary files and pipes are still used as a fallback
1601 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
1602 on the non-reentrant C functions localtime(3) and gmtime(3).
1603 * bug fix: global optimization policy was not visible in LOCALLY and
1605 * bug fix: class objects can be used as specializers in methods.
1606 (reported by Pascal Costanza)
1607 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
1608 with a type error. (reported by blitz_ on #lisp)
1609 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
1610 failed with a type error. (reported by Pascal Bourguignon)
1611 * bug fix: merging pathnames against defaults with :DIRECTORY
1612 starting with '(:RELATIVE :BACK) should preserve the :BACK.
1613 (reported by James Y Knight)
1614 * bug fix: saving large (>2GB) cores on x86-64 now works
1615 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
1616 constant index and a (simple-array (signed-byte 32)) array
1617 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
1618 error (patch by Robert J. Macomber)
1619 * feature: TIME now displays the amount of run-time spent in GC
1620 * bug fix: The debugger now does a better job of respecting
1621 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
1622 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
1623 workaround for bug 403.)
1624 * bug fix: floating point exception handling now works on FreeBSD
1625 (thanks to NIIMI Satoshi)
1626 * fixed some bugs revealed by Paul Dietz' test suite:
1627 ** MISC.641: LET-conversion were not supposed to work in late
1629 * improvements to the Win32/x86 port:
1630 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
1631 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
1633 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
1634 * new feature: source path information is generated for macro-expansion
1635 errors for use in IDE's like Slime (thanks to Helmut Eller)
1636 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
1637 * bug fix: compiler does not loop forever on an invalid type in
1639 * improvement: compilation of most CLOS applications is significantly
1641 * optimization: added a limited bytecode compiler for simple toplevel
1642 forms, speeding up compilation and FASL loading
1643 * bug fix: the statistical profiler now properly distinguishes anonymous
1646 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
1647 * minor incompatible change: in sbcl-0.9.11 (but not earlier
1648 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
1649 into subclasses of the finalized class. Now user calls to
1650 FINALIZE-INHERITANCE finalize just the one class, and calls by the
1651 system return before any subclasses are finalized.
1652 * minor incompatible change: The reader no longer ignores errors
1653 regarding non-existent packages in #+ and #- feature tests.
1654 * new feature: command line options --no-sysinit, --no-userinit to
1655 inhibit loading the corresponding init files
1656 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
1657 for sending data through UDP sockets (thanks to François-René Rideau)
1658 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
1659 error is signalled instead (thanks to François-René Rideau)
1660 * minor incompatible change: Error signalling behaviour of lexical
1661 operations violating package locks has changed slightly. Refer to
1662 documentation on package locks for details.
1663 * enhancement: EVAL can process IF-expressions without resorting to the
1665 * bug fix: Some operations involving SIN, COS, or TAN weren't being
1666 constant-folded properly due to missing out-of-line functions.
1667 (reported by Mika Pihlajamäki)
1668 * bug fix: LISTEN sometimes returned T even in cases where no data was
1669 immediately available from the stream
1670 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
1671 were reversed. (reported by Levente Mészáros)
1672 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
1673 when given a vector displaced to an adjustable array. (reported
1675 * bug fix: derivation of float boundaries from numbers outside the
1676 appropriate float range (reported by John Wiseman)
1677 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
1679 * bug fix: precomputing cache entries for generic functions with
1680 some subclasses of specializers as yet invalid does not attempt to
1681 fill a cache line with a negative offset. (reported by Levente
1683 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
1684 allow condition class objects as arguments to DOCUMENTATION and
1685 (SETF DOCUMENTATION); only find and set documentation for
1686 structure names for the STRUCTURE doc-type. (suggested by Gary
1688 * improvements to the Win32/x86 port:
1689 ** (user-homedir-pathname) and default initialization file
1690 locations now know about the user's "Documents and Settings"
1691 directory (thanks to Yaroslav Kavenchuk)
1692 ** run-program is implemented (thanks to Mike Thomas)
1693 ** sockets support (thanks to Timothy Ritchey)
1694 ** better backtrace support (thanks to Alastair Bridgewater)
1695 ** sb-grovel supported
1696 ** asdf-install and sb-posix work somewhat
1697 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
1698 * improvements to the Solaris/x86 port:
1699 ** works on Solaris 11/Solaris Express
1700 ** floating-point exception handling support
1701 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
1702 * fixed some bugs revealed by Paul Dietz' test suite:
1703 ** REMOVE-METHOD returns its generic function argument even when
1704 the method is not one of the generic functions' methods.
1705 ** objects declared as MEMBER types can be admissible arguments to
1706 structure accessors.
1707 ** printing characters should simply be printed by the FORMAT ~:C
1709 ** compiler failure when compiling functions with hairy constant
1710 defaults for optional parameters.
1711 ** compiler produces wrong code when MAYBE-INLINE-expanding a
1712 function, which is already optimized.
1714 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
1715 * new platform: experimental support for SBCL x86/Darwin, including
1716 MacOS X 10.4.5 on Intel.
1717 * new feature: Unicode character names are now known to the system
1718 (through CHAR-NAME and NAME-CHAR).
1719 * new feature: the filesystem location of SBCL's core file is
1720 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
1721 * minor incompatible change: the contrib modules SB-POSIX and
1722 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
1723 this change is to make it easier to distribute
1724 location-independent binaries.
1725 * bug fix: as implied by AMOP, standardized classes no longer have
1726 slots named by external symbols of public packages. (reported by
1728 * optimization: calling functions via constant symbols -- as in
1729 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
1730 via the function object as in (FUNCALL #'FOO).
1731 * optimization: on x86 and x86-64, the calling convention for the
1732 case of dealing with an unknown number of values has been altered
1733 to be friendlier to the prediction heuristics implemented,
1734 particularly with reference to CALL and RET pairing. (thanks to
1735 Alastair Bridgewater)
1736 * optimization: on x86, the code for access to thread-local symbol
1737 values and binding/unbinding of thread-local symbols is smaller.
1738 (thanks to Alastair Bridgewater)
1739 * enhancement: CONSTANTP is now able to determine constantness of
1740 more complex forms, including calls to constant-foldable standardized
1741 functions and some special forms beyond QUOTE.
1742 * fixed bug: occasional GC crashes on Solaris/x86
1743 * optimization: x86-64 supports stack allocation of results of simple
1744 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
1745 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
1746 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
1747 (thanks to James Knight)
1748 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
1749 by the standard (thanks to Stephen Compall)
1751 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
1752 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
1753 be used for bundling the runtime and the core file into one
1754 executable binary. This feature is not currently supported on all SBCL
1755 platforms. (thanks to James Bielman and NIIMI Satoshi)
1756 * new feature: a generational or ephemeral garbage collector is now
1757 the default on the PowerPC platform (both Linux and Darwin). The
1758 old Cheney (stop and copy) collector is a build-time option.
1759 (thanks to Cyrus Harmon, after Raymond Toy)
1760 * minor incompatible change: the method by which SBCL finds its
1761 contributed modules has changed; it no longer relies on symbolic
1762 links from an $SBCL_HOME/systems directory, but searches directly
1763 in the subdirectories of $SBCL_HOME.
1764 * enhancement: the dynamic heap size on the Linux/PPC platform is
1765 markedly larger, even using the older Cheney garbage collector.
1766 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
1767 certain complicated string types. (reported by Gary King)
1768 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
1769 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
1770 * fixed bug: DOCUMENTATION on structures no longer signals an
1771 error if no structure type of the right name exists. (reported by
1773 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
1774 applicable non-standard primary or :AROUND method on
1775 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
1776 no longer cause unbound variable errors. (reported by Kevin Reid)
1777 * fixed bug: metacircle resolution in cases where methods have slots
1778 added before the slots from STANDARD-METHOD. (reported by Jean
1780 * fixed bug: the Power PC assembly code for calling into lisp
1781 sometimes computed its return address wrongly (depending on the
1782 15th bit of the address, fixed at link time). This used to
1783 manifest itself in a segmentation violation while building PCL.
1784 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
1785 many others over the years)
1786 * fixed bug: ROOM no longer reports silly numbers for stack usage if
1787 the stack pointer (treated as a signed integer) is negative.
1788 (thanks to Peter van Eynde)
1790 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
1791 * new platform: experimental support for the Windows operating
1792 system has been added. (thanks to Alastair Bridgewater)
1793 * fixed several bugs in and robustified the PPC FFI (including
1794 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
1795 * bug fix: allow non-simple string symbol names (reported by Paul
1797 * bug fix: interrupt handling on NetBSD (thanks to Richard M
1799 * bug fix: saving a core corrupted callbacks on x86/x86-64
1800 * bug fix: closed a loophole in metacircularity detection and
1801 grounding in the PCL implementation of CLOS.
1802 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
1803 (reported by tomppa on #lisp)
1804 * bug fix: clear the direction flag on Lisp -> C transitions, as
1805 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
1806 (reported by Andrej Grozin and Hendrik Maryns)
1807 * optimization: major improvements to GC efficiency on GENCGC platforms
1808 * optimization: faster implementation of EQUAL
1809 * optimization: emit more efficient opcodes for some common
1810 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
1811 * optimization: several other minor code-generation improvements on x86-64
1812 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
1814 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
1815 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1816 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
1817 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
1818 by ANSI as a generic function, and for consistency (SETF
1819 GENERIC-FUNCTION-NAME) is treated likewise.
1820 * fixed bug #233.b: make constraint propagation notice when a variable
1821 value is changed after it is referenced but before it is used
1822 * fixed bug #296: no more arbitrary behaviour from filenames with
1823 odd characters as --load arguments. (reported by Adam Warner)
1824 * fixed bug #390: :CHARACTER-SET pathname components now work as
1825 expected. (reported by Tim Daly Jr)
1826 * fixed bug #391: complicated :TYPE intersections in slot
1827 definitions no longer cause an error in PCL internals.
1828 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
1829 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
1830 returning the number of octets which would be written to the
1831 file-stream. (thanks to Robert J. Macomber)
1832 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
1833 arguments to the internal stream functions. (thanks to David
1835 * bug fix: stack exhaustion is now handled on the x86/SunOS
1836 platform. (thanks to Daisuke Homma)
1837 * bug fix: more accurate ROOM results on GENCGC platforms
1838 * optimization: improved type inference for arithmetic-for
1839 index variables in LOOP
1840 * optimization: faster floating-point SQRT on x86-64
1841 * fixed some bugs revealed by Paul Dietz' test suite:
1842 ** DOCUMENTATION returns NIL instead of "" for method combinations
1843 that don't have a docstring
1845 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
1846 * minor incompatible change: (SETF CLASS-NAME) and (SETF
1847 GENERIC-FUNCTION-NAME) are no longer generic functions, and
1848 therefore are not customizeable by user code (as seems to be at
1849 least permitted and maybe required by AMOP). As a consolation,
1850 however, the SBCL implementation of these functions now calls
1851 REINITIALIZE-INSTANCE as specified by AMOP.
1852 * bug fix: slot-definition documentation is propagated as per ANSI
1853 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
1854 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
1855 argument, as do eslotd initialization methods. (from Pascal
1856 Costanza's "Closer" project)
1857 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
1858 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
1860 * bug fix: it is now possible to have more than one subclass of
1861 STANDARD-GENERIC-FUNCTION without causing stack overflow.
1862 (reported by Bruno Haible, Pascal Costanza and others)
1863 * bug fix: the dependent update protocol now works for generic
1864 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
1865 and Pascal Costanza)
1866 * bug fix: condition-class instances corresponding to
1867 DEFINE-CONDITION forms are now created eagerly. (reported by
1868 Kalle Olavi Niemitalo on comp.lang.lisp)
1869 * bug fix: floating point printing is more accurate in some
1870 circumstances. (thanks to Simon Alexander)
1871 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
1872 merged with *DEFAULT-PATHNAME-DEFAULTS*.
1873 * bug fix: callbacks on OS X now preserve stack-alignment.
1874 (thanks to Cyrus Harmon)
1875 * enhancement: the x86-64 disassembler is much better at
1876 disassembling SSE instructions. (thanks to Lutz Euler)
1877 * enhancement: CHECK-TYPE on a variable now allows type-inference
1878 (thanks to Vincent Arkesteijn)
1879 * optimization: improved performance of EUC-JP external format.
1880 (thanks to NIIMI Satoshi)
1881 * optimization: performance improvements to IO on file streams of
1882 :ELEMENT-TYPE CHARACTER
1883 * optimization: much faster memory allocation on x86-64
1884 * optimization: faster garbage collections (latency and throughput)
1886 * optimization: faster bignum subtraction and division on x86 and x86-64
1887 (thanks to Lutz Euler)
1888 * optimization: more accurate type-inference for loops that use a
1889 floating point index variable or a negative step.
1891 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
1892 * bug fix: add a workaround to SBCL looping infinitely at startup on
1893 Linux kernels with apparently buggy implementations of personality().
1894 (thanks to Svein Ove Aas)
1895 * bug fix: Unicode symbols are correctly printed in LDB backtraces
1896 (thanks to David Lichteblau)
1897 * bug fix: local bindings shadow global symbol macros for
1898 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
1899 * optimization: non-open coded uses of numeric comparison operators
1900 (e.g. >) no longer cons when called with more than one parameter
1901 on platforms supporting dynamic-extent allocation.
1902 * enhancement: saving cores with foreign code loaded is now supported
1903 on MIPS/Linux in addition to the previously supported platforms.
1904 * bug fix: FIND-RESTART now tests for activity, not applicability when given
1905 a restart object as identifier. (reported by Helmut Eller for CMUCL)
1906 * bug fix: division by zero in sb-sprof when no samples were collected
1907 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
1908 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
1909 (thanks to Alexander Kjeldaas)
1910 * new feature: ignoring the return values of destructive functions
1911 like NREVERSE signals a compile-time style-warning.
1912 (thanks to Kevin Reid)
1913 * new feature: the alignment of alien structure fields can be
1914 explicitly specified. (thanks to Cyrus Harmon)
1915 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
1916 and dump core on SIGQUIT
1918 ** incompatible change: threads do not inherit values of specials
1919 from their parents (see manual)
1920 ** bug fix: threads stacks belonging to dead threads are freed by the
1921 next exiting thread, no need to gc to collect thread stacks anymore
1922 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
1923 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
1924 ** bug fix: dynamic variable and thread start related gc lossage
1925 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
1927 * fixed some bugs revealed by Paul Dietz' test suite:
1928 ** SUBTYPEP is slightly more accurate on heinously complicated
1929 CONS types where some of the members have uncertain (in the
1930 NIL, NIL sense) type relationships to each other.
1932 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
1933 no longer purified unless :PURIFY T is explicitly specified.
1934 ** Non-purified cores are significantly smaller than before
1936 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
1937 * new feature: timers based on Zach Beane's excellent timer package
1938 * added support for the following external formats: koi8-u,
1939 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
1940 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
1941 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
1942 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
1943 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
1944 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
1945 * incompatible change: a threaded SBCL will no longer revert to
1946 non-threaded mode on non-NPTL systems, but refuse to start entirely.
1947 * bug fix: interrupts are disabled until startup is complete; no
1948 more sigsegvs when receiving a signal to soon
1949 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
1951 * bug fix: add a workaround for the memory randomization features in
1952 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
1953 workaround will only be in effect on systems with the proc filesystem
1955 * bug fix: printing objects of type HASH-TABLE signals a
1956 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
1958 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
1959 have been running for over 50 days. (reported by Gilbert Baumann)
1960 * bug fix: the logic for getting names of functions gets less
1961 confused when confronded with alternate-metaclass
1962 funcallable-instances. (reported by Cyrus Harmon)
1963 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
1964 consistent, even on internal alternate-metaclass objects.
1965 * bug fix: flush closure information collected by physical
1966 environment analysis prepass before the main pass. (bug reported
1968 * bug fix: compiler pack phase does not modify a hashtable, which is
1969 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
1970 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
1971 may be expanded. (reported by Alexander <malishev> on c.l.l)
1972 * bug fix: no more style-warnings when compiling code using LAST
1973 under high-SPEED low-SPACE settings. (reported by David Wallin
1975 * fixed some incompatibilities between SBCL's MOP and the MOP
1977 ** the METAOBJECT class is now implemented;
1978 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
1979 STANDARD-OBJECT, as required;
1980 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
1981 now compatible (as required by VALIDATE-SUPERCLASS); there
1982 remains a consistency requirement over the presence or absence
1983 of the FUNCTION class in the superclass list of finalized
1984 classes; see the manual for more details;
1985 ** the :AROUND method for COMPUTE-SLOTS on
1986 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
1987 requested slot ordering.
1989 ** bug fix: parent thread now can be gc'ed even with a live
1991 ** bug fix: binding a special with PROGV to no value is not
1992 the same as that symbol not having been bound (thanks to
1994 ** bug fix: binding specials is thread safe (thanks to
1996 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
1997 and SB-SPROF do not die with 'no handler for signal XX in
1998 interrupt_handle_now(..)' anymore
1999 ** bug fix: WITH-TIMEOUT works with multiple running threads
2000 * fixed some bugs revealed by Paul Dietz' test suite:
2001 ** ENSURE-GENERIC-FUNCTION should take a method class object for
2002 the :method-class keyword argument.
2004 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
2005 * new port: the Solaris operating system on x86 processors is now
2006 mostly supported, though some rough edges in the environment
2007 remain. (thanks to Daisuke Homma)
2008 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
2009 space for its heap. (thanks to Thiemo Seufer)
2010 * optimization: SBCL on MIPS platforms now supports dynamic-extent
2011 closures. (thanks to Thiemo Seufer)
2012 * minor incompatible change: eof selects abort in the debugger.
2013 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
2014 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
2016 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
2017 deprecated, and will go away in a future revision of SBCL.
2018 * minor incompatible change: GC-ON and GC-OFF are no longer
2019 implemented with a counter, it does not matter how many times gc
2020 is switched on or off
2021 * bug fix: discriminating functions for generic function classes
2022 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
2023 make invalid assumptions about method precedence order. (reported
2025 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
2026 platforms. (thanks to Thiemo Seufer)
2027 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
2028 * bug fix: correct pathname printing with printer escaping is on.
2029 (thanks to Kevin Reid)
2030 * bug fix: complex VOP definitions in "user-space" no longer trigger
2031 package locks. (reported by Zach Beane)
2032 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
2033 for funcallable-instance functions, and is no different from
2035 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
2036 characters in the current readtable. (reported by Nicholas Neuss)
2037 * bug fix: SUBTYPEP on various CONS types returns more a more
2038 accurate acknowledgment of its certainty.
2039 * optimizations: REMOVE-DUPLICATES now runs in linear time on
2040 lists in some cases. This partially fixes bug 384.
2041 * flush all standard streams before prompting in the REPL and the
2043 * bug fix: signal handling and triggering gc do not conflict
2044 directly anymore, in particular a high frequency sb-sprof does
2045 not prevent gc from running
2046 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
2047 approximation for timezone and DST information between the
2048 universal time epoch and the smallest negative 32-bit time_t.
2049 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
2050 year 1899 so long as the encoded time is non-negative.
2051 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
2052 the correct answer for non-constant rotate amounts when performing
2053 an inline 32-bit rotation.
2055 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
2056 there is only one thread in the session
2057 ** bug fix: memory leak for streams created in one thread and
2058 written to in another
2059 ** bug fix: lockup when compiled with gcc4
2060 ** bug fix: race that allows the gc to be triggered when gc is
2062 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
2063 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
2065 ** bug fix: finished threads are gc'ed properly
2066 * fixed some bugs revealed by Paul Dietz' test suite:
2067 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
2068 has arguments with a different set of applicable methods from
2069 the orignal arguments.
2070 ** The type error thrown by MAP now has a correct expected-type
2072 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
2073 name a compiled function.
2074 ** Three MISC tests where a large bignum was improperly coerced to
2075 a float that couldn't represent that bignum during type
2076 derivation were fixed.
2077 ** SUBTYPEP can now handle types involving the negation of a
2078 list-form FUNCTION type.
2079 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
2080 as (COMPLEX (AND RATIO (NOT FIXNUM))).
2081 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
2083 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
2084 * New feature: Experimental support for bivalent streams: streams
2085 opened with :element-type :default now allow character and binary
2086 (unsigned-byte 8) I/O
2087 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
2088 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
2090 * bug fix: no more highly sporadic "couldn't check whether ~S is
2091 readable" when reading a stream and an interrupt hits in the middle
2092 of a select system call
2093 * compiler better recognizes complex arrays (reported by Eduardo
2095 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
2096 for variables on SBCL built with linkage-tables. (reported by Luis
2098 * various error reporting improvements.
2099 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
2100 (Thanks to Thiemo Seufer)
2101 * bug fix: nested reader invokations work correctly
2102 * bug fix: it is possible to have simultaneous references to foreign
2103 code and foreign data with the same name.
2105 ** added x86-64 support
2106 ** incompatible change: the threading api now works with thread
2107 objects instead of thread ids
2108 ** bug fix: threads are protected from signals and interruption when
2109 starting up or going down
2110 ** bug fix: a race where an exiting thread could lose its stack to gc
2111 ** bug fix: don't halt on infinite error in threads if possible
2112 ** fixed numerous gc deadlocks introduced in the pthread merge
2113 ** bug fix: fixed thread safety issues in read and print
2114 ** bug fix: debugger doesn't hang on session lock if interrupted at
2115 an inappropriate moment
2116 ** bug fix: run-program is now thread safe(r)
2117 ** bug fix: inner with-recursive-lock no longer releases the mutex
2118 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
2119 * fixed some bugs revealed by Paul Dietz' test suite:
2120 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
2121 EXPECTED-TYPE slots filled.
2122 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
2124 ** MAKE-CONDITION accepts classes as type-designators.
2125 ** COMPILE may never return NIL.
2126 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
2127 range before calling Unix time functions
2129 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
2130 * numerous signal handling fixes to increase stability
2131 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
2132 * minor incompatible change: we now correctly canonize default
2133 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
2134 as per the MOP, rather than the historical (INITARG INITFUNCTION
2135 INITFORM). (reported by Bruno Haible)
2136 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
2137 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
2138 for more information.
2139 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
2140 pathname is a directory pathname.
2141 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
2142 * dynamic space size on PPC has been increased to 768Mb. (thanks to
2144 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
2145 :METACLASS argument in addition to a class name. (reported by
2146 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
2147 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
2148 (reported by Bruno Haible; patch from Gerd Moellmann)
2149 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
2151 * bug fix: more cleanups to the floating point exception handling on
2152 x86-64 (thanks to James Knight)
2153 * bug fix: the compiler does not try to constant fold calls of
2154 COERCE and BIT-* functions when they return freshly constructed
2155 objects. (reported by Nikodemus Siivola and Paul Dietz)
2156 * optimization: improved the MIPS versions of generic (in the
2157 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
2158 * optimization: direct conversion of (unsigned-byte 32) to floats on
2159 the PowerPC platform.
2160 * optimization: structure instances with raw slots now use less
2161 memory, and probably show better memory locality. (thanks to
2163 * optimization: DYNAMIC-EXTENT declarations for lists and closures
2164 are treated as requests for stack allocation on the x86-64,
2165 Alpha-32, PPC and SPARC platforms.
2166 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
2167 the wrong file descriptor; implementation of SOCKET-OPEN-P.
2168 (thanks to Tony Martinez)
2170 ** gcing a dead thread can no longer lead to lockups
2171 ** threads block signals until they are set up properly
2172 ** errno is no longer shared by threads
2173 ** interrupt-thread restores the eflags register on x86
2174 ** fixed some lockups due to gc/thread interaction
2175 * fixed some bugs revealed by Paul Dietz' test suite:
2176 ** invalid dotted lists no longer raise a read error when
2177 *READ-SUPPRESS* is T
2178 ** signal an error if a symbol that names a declaration is used
2179 as the name of a type, or vice versa
2180 ** allow using the (declare (typespec var*)) abbreviation for
2181 (declare (type typespec var*)) with all type specifiers
2182 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
2183 ** always return NIL from PPRINT-POP when OBJECT is NIL
2184 ** don't signal errors when pretty-printing malformed LABELS,
2185 FLET or MACROLET forms
2186 ** declarations in a DOLIST body are also in scope for the
2188 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
2190 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
2193 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
2194 * fixed cross-compiler leakages that prevented building a 32-bit
2195 target with a 64-bit host compiler.
2196 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
2197 opened with :IF-EXISTS :OVERWRITE.
2198 * fixed bug 281: error for an invalid qualifier in a short-form method
2199 combination method is not signalled until the faulty method is called.
2200 * bug fix: iteration variable type inferrer failed to deal with open
2201 intervals. (reported by Alan Shields)
2202 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
2203 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
2204 or more runtime options were provided to the sbcl binary.
2205 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
2206 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
2207 * optimization: there's now a fast-path for fixnum arguments in the
2208 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
2209 * optimization: the code generated on x86-64 is more compact thanks
2210 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
2211 * bug fix: floating-point exception handling now partly works on
2212 x86-64. (Thanks to James Knight)
2213 * improvement to the MIPS backend from Thiemo Seufer: C-style
2214 64-bit long long arguments and return values to alien functions
2216 * fixed some bugs revealed by Paul Dietz' test suite:
2217 ** the type-error signalled from WARN has a filled-in DATUM slot.
2218 ** the type-error required when a stream is not associated with
2219 a file has the stream as its datum.
2220 ** type-errors on single-floats on x86-64 no longer have
2221 :INVALID-OBJECT as the datum
2222 ** the type-errors signalled for invalid function names now have
2223 a correct expected type
2224 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
2225 for structures defined with a :TYPE. Documentation strings for
2226 typed structures are no longer immediately discarded
2227 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
2228 broadcast streams and synonym streams. FILE-LENGTH now also works
2229 on broadcast streams.
2231 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
2232 * incompatible change: the --noprogrammer option, deprecated since
2233 version 0.7.5, has been removed. Please use the equivalent
2234 --disable-debugger option instead.
2235 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
2237 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
2238 inoperational for a while now) has been completely removed.
2239 * null lexical environments are now printed as #<NULL-LEXENV>,
2240 significantly reducing the amount of clutter in typical backtraces.
2241 * documentation on weak pointers, finalization, and after GC hooks
2242 has been added to the manual.
2243 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
2244 as other specialized array types, is much faster. SUBSEQ and
2245 COPY-SEQ on such arrays have also been sped up.
2246 * optimization: EQL is now more efficient when at least other argument
2247 is known to be of type (OR FIXNUM (NOT NUMBER)).
2248 * fixed bug: the runtime is now less vulnerable to changes in the
2249 size of the SBCL object on OS X, and virtual memory is reserved for
2250 all spaces that need to be at a fixed address.
2251 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
2252 * fixed bug: finalizers and after GC hooks that cause consing are now
2254 * fixed bug: compiler error messages and summaries are now printed to
2255 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
2256 * fixed inference of the upper bound of an iteration variable.
2257 (reported by Rajat Datta).
2258 * fixed bug 211e: calling local functions with duplicated constant
2259 keyword argument no longer causes a bogus style warning about an
2261 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
2262 ftype declaration to be disregarded. (reported by Dave Roberts)
2263 * fixed bug 373: caused by erronous compilation of references to alien
2264 variables in the runtime on ppc/darwin.
2265 * fixed bug 376: CONJUGATE type deriver.
2266 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
2267 (reported by Baughn on #lisp)
2268 * a cross-compiler bug on non-x86 platforms has been identified and
2269 fixed. (thanks to Bruno Haible)
2270 * improvements to the MIPS runtime code for increased stability.
2271 (thanks to Thiemo Seufer)
2272 * increased the maximimum compact environment size to allow
2273 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
2274 * partial workaround for bug 135: don't name the function we're
2275 calling for hairy cases of EVAL, so as not to accumulate one environment
2276 entry per call to EVAL. (reported by Kevin Reid)
2277 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
2278 * optimization: type testing for non-vector arrays should be faster.
2279 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
2281 * bug fix: setting 31st element of a bit vector to zero did not work
2283 * bug fix: redefining a class definition which failed due to a
2284 previous accessor / function clash now works (but see BUGS entry
2285 #380 for more problems in this area). (thanks to Zach Beane)
2286 * the long form of DEFINE-METHOD-COMBINATION disables method group
2287 checking when given a single method group with pattern *. (thanks
2289 * on x86 compiler supports stack allocation of results of simple
2290 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
2291 * support for building and running on Mac OS X 10.4 "Tiger" has been added
2292 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
2293 * fixed some bugs related to Unicode integration:
2294 ** the restarts for recovering from input and output encoding
2295 errors only appear when there is in fact such an error to
2297 * fixed some bugs revealed by Paul Dietz' test suite:
2298 ** MISC.549 and similar: late transformation of unsafe type
2299 assertions into derived types caused unexpected code
2301 ** SCALE-FLOAT type deriver is less wrong.
2302 ** type derivers for EXP, LOG and similar functions compute result
2303 types for complex arguments better.
2304 ** (MISC.563) CONJUGATE type deriver works for very restricted
2306 ** out-of-line type testers for character strings are available.
2307 ** EQUAL compiler transform understands specialness of objects
2309 ** accessing double-floats stored on the stack now works on x86-64.
2310 ** debugger internals could sometimes create invalid lispobjs,
2311 resulting in GC crashes.
2312 ** MISC.548: type check weakening can convert required type into
2314 ** initialization forms for bindings are not in scope of free special
2317 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2318 * incompatible change: thread support for non-NPTL systems has
2319 been removed - locking is buggy and unreliable. A threaded
2320 SBCL build will now warn at startup and refuse to create
2321 new threads, unless futex support is detected in the kernel
2322 * incompatible change: the top level REPL now has only an ABORT
2323 restart associated with it, not TOPLEVEL and ABORT as it used to.
2324 TOP and TOPLEVEL are now available as debugger commands for
2325 returning to the top level.
2326 * incompatible change: forms evaluated in the REPL now use the
2327 global optimization policy.
2328 * incompatible change: user- and system-initialization files are
2329 no longer processed with LOAD, but by READ and EVAL; hence the
2330 global optimization policy, startup package, readtable, etc,
2332 * The .fasl file format number has been incremented because of
2333 various incompatible changes.
2334 * internal entry point details and argument counts no longer appear
2335 in backtraces unless explicitly requested by setting
2336 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
2337 * built-in and standard functions no longer have names like "top
2338 level local call to FOO".
2339 * fixed bug 32: functions defined in non-null lexical environments
2340 now have more legible printed representation
2341 * fixed bug 33: functions defined in non-null lexical environemnts
2342 are now more amenable to inspection by INSPECT.
2343 * workaround for bug 354: XEPs no longer appear in backtraces unless
2344 explicitly requested.
2345 * fixed bug: receiving the signal which results from attempting to
2346 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
2347 SIGBUS on other *BSDs) on architectures where the C stack is also
2348 the Lisp stack (x86 and x86-64) from foreign code no longer leads
2349 to debugger confusion or wild instability. (reported by Cheuksan
2351 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
2352 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
2353 (reported by Lutz Euler)
2354 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
2355 compiled code. (reported by Paul Dietz)
2356 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
2357 specialized parameter to a method to something that is not TYPEP
2358 the specializer is now possible.
2359 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
2360 face of package deletion.
2361 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
2362 pathname. (reported by David Tolpin on c.l.l)
2363 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
2364 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
2365 STRING-STREAM and FILE-STREAM, respectively.
2366 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
2367 than previously; in addition, its test suite is now run on build.
2368 (thanks to Luke Gorrie)
2369 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
2370 * optimization: added a immediate representation for single-floats
2372 * fixed some bugs revealed by Paul Dietz' test suite:
2373 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
2374 ** attempting to create a package with a colliding nickname causes
2375 correctable errors to be signalled.
2376 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
2377 ** several x86-64 backend bugs related to sign-extension of immediate
2380 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
2381 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
2382 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
2384 * fixed loading of multiply forward-referenced layouts.
2385 (thanks to Cheuksan Wang)
2386 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
2387 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
2388 (see COMPILE-FILE documentation for details of :PRINT option)
2389 * fixed bugs 19 and 317: fixed-format floating point printing is
2390 more accurate. This also fixes a bug reported by Adam Warner
2391 related to the ~@F format directive.
2392 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
2394 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
2395 dispatch table if the from-char is a dispatch macro character.
2396 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
2397 by the wordsize no longer ignore the last word. (reported by Lutz
2399 * fixed bug in type checking of dynamic-extent variables. (reported
2401 * optimization: sequence traversal functions use their freedom to
2402 coerce function designators to functions.
2403 * optimization: code with many calls to CLOS methods specialized on
2404 CLOS classes has had redundant type checks removed.
2405 * optimization: added declarations to speed up operations that access
2406 the internal character database (for example STRING-UPCASE)
2407 * optimization: comparison operations between floats and sufficiently small
2408 fixnums no longer create extra rationals
2409 * fixed some bugs related to Unicode integration:
2410 ** portions of multibyte characters at the end of buffers for
2411 character-based file input are correctly transferred to the
2412 start of the buffer at the next read.
2413 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
2414 passing it through to OPEN.
2415 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
2416 argument given to internal calls to OPEN.
2417 ** the built-in comment readers (introduced by character sequences
2418 ";" and "#|") are more forgiving to encoding errors; they will
2419 STYLE-WARN and then attempt to resync the stream at a character
2420 boundary. (thanks to Teemu Kalvas)
2421 * fixed some bugs in the x86-64 port:
2422 ** Negative short int return values from c-calls are sign-extended
2424 ** The stack is aligned to 16-bytes for c-calls, as required by
2425 the ABI. (thanks to Cheuksan Wang)
2426 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
2427 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
2428 for enums. (thanks to Vincent Arkesteijn)
2429 ** Multiple small optimizations and bugfixes for floating point
2431 * fixed some bugs revealed by Paul Dietz' test suite:
2432 ** Space, Tab, Linefeed, Return and Page have the invalid
2433 secondary constituent character trait.
2434 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
2436 ** WITH-INPUT-FROM-STRING should only update the index place on
2438 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
2439 works more reliably.
2440 ** Bit-array operations (BIT-AND and similar) worked incorrectly
2441 with one-dimensional arrays with fill pointers.
2442 ** TYPE-OF failed on a complex with an integer realpart and a
2444 ** compiler failure during type inference for the code of form
2445 (IF (EQL X (THE ...)) ...) (MISC.535).
2447 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2448 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
2449 platform. The port supports 61-bit fixnums, large memory spaces
2450 and reloading shared object files.
2451 * enhancement: saving cores with foreign code loaded is now
2452 supported on ppc/Darwin in addition to the previously supported
2454 * enhancement: the statistical profiler now walks deeper into the
2455 call stack for more meaningful call-graphs and accrued time
2456 reports (x86/x86-64 only). It also now reports time spent in
2458 * enhancement: it is now possible to trace most individual methods
2459 of a generic function in addition to tracing the generic function
2461 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
2463 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
2464 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
2465 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
2466 produces an error. (thanks to Vincent Arkesteijn)
2467 * bug fix: NAMESTRING on pathnames with :WILD components in their
2468 directories works correctly. (thanks to Artem V. Andreev)
2469 * fixed bug 125: compiler preserves identity of closures. (reported
2471 * bug fixed: functions with &REST arguments sometimes failed with
2472 "Undefined function" when compiled with (DEBUG 3). (reported by
2474 * bug fix: overflow during compiling of setting element of a bit
2475 vector with constant index and value. (reported by Timmy Douglas)
2476 * build fix: fixed the dependence on *LOAD-PATHNAME* and
2477 *COMPILE-FILE-PATHNAME* being absolute pathnames.
2478 * on x86 compiler partially supports stack allocation of dynamic-extent
2480 * GO and RETURN-FROM do not check the extent of their exit points
2481 when compiled with SAFETY 0.
2482 * fixed some bugs related to Unicode integration:
2483 ** encoding and decoding errors are now much more robustly
2484 handled; it should now be possible to recover even from invalid
2485 input or output to the terminal. (thanks to Teemu Kalvas)
2486 ** provided a first cut at implementing STRING-TO-OCTETS and
2487 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
2488 ** altered the SB-MD5 contributed module slightly, changing the
2489 interface just enough for it to be supportable for builds where
2490 lisp characters are not eight bits.
2491 * fixed some bugs revealed by Paul Dietz' test suite:
2492 ** the FORMATTER-generated functions for ~V[ conditionals require
2493 the correct number of arguments.
2494 ** READ-FROM-STRING returns the mandated second value when applied
2495 to displaced strings.
2496 ** the #\Rubout and #\Backspace characters are treated as invalid
2497 constituent characters by the tokenizer.
2499 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2500 * new feature: reloading changed shared object files with
2501 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
2502 * new feature: references to foreign variables and functions
2503 can now be compiled and loaded before the corresponding shared
2504 object file is loaded, as long as the foreign definitions are
2505 available at runtime.
2506 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
2507 supported. (thanks to Dan Debertin)
2508 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
2509 just keywords. (thanks to Vincent Arkesteijn)
2510 * fixed bug #331: structure-class instances corresponding to
2511 DEFSTRUCT forms are now created eagerly.
2512 * fixed bug #345: backtraces from calls to undefined functions work
2513 on x86 as well. Related bug #61 is now also partially fixed on x86
2514 (backtraces from throws to unknown catch tags.)
2515 * bug fix: lambda-list parsing is now stricter vrt. order and number
2516 of lambda-list keywords.
2517 * bug fix: as specified by AMOP, an error is signalled if a
2518 class-option appears multiple times in a DEFCLASS form. (reported
2520 * bug fix: RANDOM can be compiled when the compiler derives the type
2521 of its numeric argument as a disjoint set of small integers.
2522 (reported by Paul Dietz)
2523 * bug fix: starting a core saved with shared objects loaded when
2524 those objects are not available no longer causes threaded SBCL to
2525 hang. (reported by Sean Ross)
2526 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
2528 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
2529 argument, which must always be NIL. (reported by Kalle Niemitalo)
2530 * bug fix: printing 1.0d+23 no longer results in an error.
2531 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
2532 * bug fix: structure slot setters preserve evaluation order. (thanks
2534 * fixed some bugs related to Unicode integration:
2535 ** RUN-PROGRAM can allow its child to take input from a Lisp
2536 stream. (reported by Stefan Scholl)
2537 ** ASDF-INSTALL successfully downloads .tar.gz files in all
2538 locales. (reported by Ken Causey)
2539 * fixed some bugs revealed by Paul Dietz' test suite:
2540 ** INCF, DECF and REMF evaluate their place form as specified in
2542 ** FORMATTER expands ~{ ~} iteration directives with V or #
2543 parameters correctly.
2544 ** FORMATTER deals with the ~@[ ~] conditional directive where the
2545 consequent uses no arguments correctly.
2546 ** the system has a partial understanding of the (COMPLEX RATIO)
2548 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
2551 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2552 * new feature: a build-time option (controlled by the :SB-UNICODE
2553 keyword feature, enabled by default) for building the system with
2554 support for the entire 21-bit character space defined by the
2556 * new feature: the system now has rudimentary external-format
2557 support; the primary user-visible change at this time is that
2558 characters with the high bit set (such as lower-case-e-acute) will
2559 print correctly to a terminal in a UTF-8 environment.
2560 * minor incompatible change: BASE-CHAR no longer names a class;
2561 however, CHARACTER continues to do so, as required by ANSI.
2562 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
2563 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
2564 has been moved to the SB-EXT package (temporarily re-exported from
2566 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
2567 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
2569 * fixed bug #351: better error-handlind and reporting for malformed
2571 * fixed bug #350: bignum-printing is now more memory-efficient,
2572 allowing printing of very large bignums, eg. (expt 2 10000000).
2573 (reported by Bruno Haible)
2574 * fixed bug #302: better primitive-type selection for intersection
2576 * fixed bug #308: non-graphic characters now all have names, as
2577 required. (reported by Bruno Haible)
2578 * bug fix: redefining a class with different superclasses now correctly
2579 removes it from the direct-subclasses of its previous superclasses.
2580 (reported by David Morse)
2581 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
2582 new value now works. (reported by Bruno Haible)
2583 * bug fix: correct canonicalization of multiple non-standard slot
2584 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
2585 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
2586 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
2587 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
2588 now exists, an signals an error.
2589 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
2590 during macroexpansion for non-iteration variables as well. (reported
2591 by Bruno Haible for CMUCL)
2592 * bug fix: Cyclic structures and unprintable objects in compiler
2593 messages no longer cause errors. (reported by Bruno Haible)
2594 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
2595 and READ-FROM-STRING all now return a primary value of NIL if
2596 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
2597 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
2598 (reported by Bruno Haible for CMUCL)
2599 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
2600 do not designate a condition. (reported by Bruno Haible for
2602 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
2603 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
2604 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
2605 permitting resolution in favour of any of the conflicting symbols.
2606 (reported by Bruno Haible for CMUCL)
2607 * bug fix: EQUAL compiler optimizations is less aggressive on
2608 strings which can potentially compare true despite having distinct
2609 specialized array element types.
2610 * bug fix: unit enumerations can be defined without dividing by
2611 zero. (thanks to Vincent Arkesteijn)
2612 * FORMAT compile-time argument count checking has been enhanced.
2613 (report from Bruno Haible for CMUCL)
2614 * a partial workaround for the bug 262: the compiler does not try to
2615 inline-expand a local function doing RETURN-FROM from a deleted
2616 BLOCK. (thanks to Peter Denno for the bug report and to David
2617 Wragg for the simple test case)
2618 * fixed some bugs revealed by Paul Dietz' test suite:
2619 ** RENAME-PACKAGE allows all package designators as new package
2621 ** constraint propagation and lambda variable substitution are
2622 more cautious in dealing with partially deleted code.
2623 ** compiler sometimes lost reoptimization passes.
2624 ** CERROR, given a condition as condition designator, passes its
2625 remaining arguments to the continue format control without
2627 ** Case-altering FORMAT directives work correctly on non-ASCII
2629 ** The REAL type specifier handles bounds outside the floating
2630 point ranges without signalling FLOATING-POINT-OVERFLOW.
2631 ** Functions with IR1-transformations can create intercomponent
2632 references to global functions.
2633 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
2635 ** FORMAT ~R treats a nil value for its first parameter correctly.
2637 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
2638 * enhancement: saving cores with foreign code loaded is now
2639 supported on x86/NetBSD and sparc/Linux in addition to the previously
2640 supported platforms.
2641 * bug fix: on some platforms repeated installations caused multiple
2642 copies of HTML documentation to be installed -- should not happen
2643 any more. (reported by Stefan Scholl)
2644 * bug fix: parsing self-recursive alien record types multiple times
2645 no longer causes infinite recursion. (reported by Thomas F. Burdick,
2646 original patch by Helmut Eller for CMUCL)
2647 * bug fix: stack-exhaustion detection works now on NetBSD as well.
2648 (thanks to Richard Kreuter)
2649 * bug fix: defining classes whose accessors are methods on existing
2650 generic functions in other (locked) packages no longer signals
2651 bogus package lock violations. (reported by François-René Rideau)
2652 * bug fix: special variables as DEFMETHOD parameters no longer have
2653 associated bogus type declarations. (reported by David Wragg and
2655 * bug fix: read-write consistency on streams of element-type
2656 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
2657 * bug fix: redefiniton of the only method of a generic function with
2658 no DEFGENERIC no longer emits a full WARNING. In addition,
2659 redefinition of generic functions with no DEFGENERIC to an
2660 incompatible lambda list now signals an error. (thanks to Zach
2662 * bug fix: DEFGENERIC now works even when there's a function of the
2663 same name in an enclosing lexical environment. (thanks to Zach
2665 * fixed compiler failure, caused by instrumenting code during
2666 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
2667 * optimization: added loop analysis and improved register allocation
2668 * fixed some bugs revealed by Paul Dietz' test suite:
2669 ** POSITION on displaced vectors with non-zero displacement
2670 returns the right answer.
2671 ** (SIMPLE-STRING) is a valid type specifier for sequence
2673 ** *PRINT-LEVEL* handling for slotless structures is pedantically
2675 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
2676 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
2678 ** The justification version of the FORMAT ~< directive treats
2679 non-zero minpad parameter correctly.
2681 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2682 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
2683 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
2684 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
2685 the supported interface.
2686 * new feature: Single-stepping of code compiled with DEBUG 2 or
2687 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
2688 * new feature: saving cores with foreign code loaded is now
2689 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
2690 Timothy Moore's work for CMUCL)
2691 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
2692 parameters to * instead of NIL if no initform is supplied.
2693 (reported by Johan Bockgaard)
2694 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
2695 correctly when FUNCALL appears as the car of the form. Note:
2696 despite this FUNCALL forms are not currently subject to
2697 compiler-macro expansion. (port of Raymond Toy's fix for the
2698 same from CMUCL, reported by Johan Bockgaard)
2699 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
2700 (thanks for Teemu Kalvas)
2701 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
2702 case instead of terminating the iteration (thanks for Julian
2703 Squires, Sean Champ and Raymond Toy)
2704 * bug fix: incorrect expansion of defgeneric that caused a style
2705 warning. (thanks for Zach Beane)
2706 * bug fix: slot accessor effective method computation works properly
2707 for classes with multiple non-standard applicable methods on
2708 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
2709 * on x86 compiler supports stack allocation of results of LIST and
2710 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
2711 CMUCL implementation by Gerd Moellmann)
2712 * fixed some bugs revealed by Paul Dietz' test suite:
2713 ** FORMAT strings with both the ~<~:;~> form of the justification
2714 directive and pretty-printing directives cause an error.
2716 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
2717 * incompatible change: the internal functions
2718 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
2719 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
2720 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
2721 instead of the old functions.
2722 * new feature: on platforms where "dladdr" is available foreign
2723 function names now appear in backtraces. (based on Helmut Eller's
2725 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
2726 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
2728 * documentation: ASDF manual is now distributed with SBCL.
2729 * bug fix: SBCL can now load its contributed modules with REQUIRE
2730 even if the system-provided entries have been removed from
2731 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
2733 * bug fix: backtraces involving undefined functions or assembly
2734 routines are more informative. (thanks to Brian Downing)
2735 * bug fix: mutually referent alien structures now work correctly.
2736 (reported by Rick Taube)
2737 * bug fix: structures defined by WITH-ALIEN can be referred to
2738 within other definitions in the same WITH-ALIEN.
2739 * bug fix: division operators (MOD, TRUNCATE and the like) with
2740 constant zero divisors and integer dividends no longer generate
2742 * bug fix: provide default methods for INPUT-STREAM-P and
2743 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
2744 * bug fix: improve the detection and resolution of MOP metacycles
2745 (where effective method computation depends on the generic function
2746 having its effective method computed). (reported by Bruno Haible)
2747 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
2748 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
2749 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
2750 * bug fix: pathnames with relative directory components can be
2751 represented relative to default pathnames.
2752 * optimization: in taking the GCD of bignums, reduce the two bignums
2753 to approximately the same size (using Euclid's algorithm) before
2754 applying the more sophisticated binary GCD. (thanks to Juho
2756 * optimization: COUNT on bitvectors now operates word-at-a-time.
2757 * optimization: ASH with a positive, but not necessarily constant,
2758 (leftwards) shift, when in a modular context, is compiled to a
2760 * fixed some bugs revealed by Paul Dietz' test suite:
2761 ** FORMAT variable parameters ("~V<char>") are defaulted properly
2762 if the corresponding argument is NIL.
2763 ** FORMAT directives accepting a minpad parameter treat negative
2765 ** literal commas as character parameters to FORMAT directives are
2767 ** literal spaces directly after ~<Newline> directives within a
2768 format-logical-block (~:< ~@:>) do not induce :FILL-style
2769 conditional newlines.
2770 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
2771 as specified: it no longer includes conditional newlines).
2772 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
2774 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
2775 :PER-LINE-PREFIX argument does not evaluate to a string.
2777 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
2778 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
2779 the manual for details; for now, package locks can be disabled by
2780 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
2781 if no major problems are found then it is likely that they will be
2782 compiled in unconditionally.
2783 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
2784 unsupported operators on all platforms. To load a shared library
2785 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
2786 object file, link it into a shared library outside of SBCL and
2787 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
2789 * bug workaround: ROOM T and the GC were not working together
2790 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
2791 reporting facility aren't preserved. That reporting has been
2792 disabled, so now until and unless someone figures out how to make it
2793 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
2794 * minor incompatible change: as threatened around sbcl-0.8.0, the
2795 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
2796 The symbols are also exported from SB-PCL for backwards
2797 compatibility, but more so than before SB-PCL should be treated as
2798 an implementation-internal package.
2799 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
2801 * the SB-SPROF contrib now works on (most) non-x86 architectures.
2802 It is known as of this release not to work on the Alpha, however.
2803 * fixed bug #167: errors signalled due to illegal syntax in method
2804 bodies are now more legible.
2805 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
2806 designators and can hence be used with TYPEP.
2807 * fixed bug #333: CHECK-TYPE now ensures that the type error
2808 signalled, if any, has the right object to be accessed by
2809 TYPE-ERROR-DATUM. (reported by Tony Martinez)
2810 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
2811 5.1.2.3 for multiple-value place subforms. (reported by Kalle
2813 * fixed bug #334: programmatic addition of slots using specialized
2814 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
2815 and :ALLOCATION :CLASS slots.
2816 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
2817 float exponents. (rereported by Peter Seibel)
2818 * fixed a bug: #\Space (and other whitespace characters) are no
2819 longer considered to be macro characters in standard syntax by
2820 GET-MACRO-CHARACTER.
2821 * fixed bug: initialization of condition class metaobjects no longer
2822 causes an instance of the condition to be created. (reported by
2824 * fixed bug: it is now possible to have slots such that
2825 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
2826 description is neither :INSTANCE nor :CLASS.
2827 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
2828 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
2829 SLOT-VALUE-USING-CLASS), and no longer causes errors with
2830 non-standard SLOT-DEFINITION-ALLOCATION values.
2831 * fixed bugs: various race conditions handling exiting threads.
2832 CL-PPCRE's thread torture test now passes.
2833 * fixed arguably-a-bug: GC time proportional to number of threads in
2834 system even when most of them are idle
2835 * optimization: improved performance of BIT and SBIT on bit-vectors.
2836 * .fasl file incompatibility: The fasl file version number has
2837 been incremented because of changes associated with package locks.
2839 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
2840 * minor incompatible change: the system no longer provides
2841 optimization hints (conditions which are TYPEP
2842 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
2843 mode; these hints are still emitted when higher SPEED optimization
2845 * new contrib module: a sampling profiler (profiling by statistical
2846 sampling, rather than by instrumenting functions) is available as
2847 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
2848 * the behaviour of the standard function ED is now customizeable by
2849 third parties through a hook variable: see ED's documentation
2850 string for information on the protocol.
2851 * the compiler no longer emits efficiency notes for (FUNCALL X)
2852 when the type of X is uncertain under default optimization
2854 * fixed bug 276: mutating a binding of a specialized parameter to a
2855 method to something that is not TYPEP the specializer is now
2857 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
2858 exhibit the required behaviour on the x86 platform. (thanks to
2859 Peter van Eynde, Eric Marsden and Bruno Haible)
2860 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
2861 even for difficult arguments. (reported by Peter Graves)
2862 * fixed bug 141a: the backquote printer now descends quoted
2864 * fixed another bug in backquote printing: no more destructive
2865 modification of the form's list structure. (reported by Brian
2867 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
2868 move between its address being taken and the call to
2869 interrupt_thread, fixing a crashing race condition.
2870 * the SB-POSIX contrib implementation has been adjusted so that it
2871 no longer exhibits ridiculously poor performance when constructing
2872 instances corresponding to C structs.
2874 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
2875 * minor incompatible change: the sb-grovel contrib now treats C
2876 structures as alien (in the sense of SB-ALIEN) objects rather than
2877 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
2878 has implications for memory management of client code
2879 (sb-grovel-returned objects must now be manually managed) and for
2880 type safety (alien objects now have full types).
2881 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
2882 used to control emission of compiler diagnostics, rather than the
2883 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
2884 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
2885 quality should be considered deprecated.
2886 * install.sh now installs the user manual as well
2887 * (not quite a new documentable feature, but worth considering in
2888 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
2889 beginnings of a semantically meaningful condition hierarchy is
2890 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
2892 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
2893 designator as the defaults argument.
2894 * fixed bug: Displaced arrays whose displaced-to array has become
2895 too small now cause ARRAY-DIMENSION to signal an error, providing
2896 for safer bounds-checking. (reported by Bruno Haible)
2897 * fixed bug: DEFCLASS slot definitions with identical :READER and
2898 :WRITER names now signal a reasonable error. (reported by Thomas
2900 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
2902 * fixed bug: Invalid slot specification errors now print correctly.
2903 (thanks to Zach Beane)
2904 * fixed bug 320: Shared to local slot value transfers in class
2905 redefinitions now happen corrently from superclasses as
2906 well. (reported by Bruno Haible)
2907 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
2909 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
2910 improper lists correctly. (reported by Bruno Haible)
2911 * fixed bug 313: source-transform for <fun-name> was erroneously
2912 applied to a call of a value of a variable with name <fun-name>.
2913 (reported by Antonio Menezes Leitao)
2914 * fixed bug 307: The obsolete instance protocol ensures that
2915 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
2916 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
2917 remove dead unknown-values globs from the middle of the stack.
2918 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
2919 easier to resume long computations after using *BREAK-ON-SIGNALS*
2920 to diagnose and fix failures. (thanks to Nikodemus Siivola)
2921 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
2922 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
2923 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
2924 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
2925 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
2927 * fixed a (fairly theoretical) bug in string printing: if
2928 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
2929 does not have array-element-type equal to the most general string
2931 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
2932 function name. (thanks to Nikodemus Siivola)
2933 * fixed bug: compile-time format string checker failed on
2934 non-closed ~{. (reported by Thomas F Burdick)
2935 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
2936 don't warn on legal loop code involving more than one aggregate
2937 boolean. (thanks to Nikodemus Siivola)
2938 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
2939 in keyword position to MAKE-PACKAGE was not being reported as
2941 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
2942 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
2944 * fixed bugs 280 and 312: the checking for multiple definitions in a
2945 file is less likely to become confused by uses of inline
2947 * fixed bug: the #S reader macro performs the keyword coercion
2948 specified for slot names. (reported by Kalle Niemitalo)
2949 * fixed bug: lambda lists may contain symbols whose names start with
2950 & but are not lambda-list-keywords; their occurrence triggers a
2952 * fixed bug 321: define-method-combination argument lambda lists do
2953 not cause invalid code to be generated when &optional or &aux
2954 variables have default values. (reported by Bruno Haible)
2955 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
2956 have CLOS classes; this appears also to have fixed reported
2957 instability in stack exhaustion detection.
2958 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
2959 MUFFLE-WARNING when no associated restart is present is now
2961 * optimization: rearranged the expansion of various defining macros
2962 so that each expands into only one top-level form in a
2963 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
2965 * optimization: used a previously little-used slot in symbols to
2966 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
2968 * fixed some bugs revealed by Paul Dietz' test suite:
2969 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
2971 ** Fixed an optimization bug related to inheritance of initforms
2972 from local to shared slots.
2973 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
2974 ** CAST optimizer forgot to flush argument derived type.
2975 ** print/read consistency on floats is now orders of magnitude
2976 more likely. (thanks also to Bruno Haible for a similar report
2978 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
2979 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
2980 for objects of type REAL. Make it so.
2981 ** SXHASH is specified (infelicitously) to respect similarity,
2982 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
2983 it so. (thanks to Markus Ziegler)
2984 ** on the Alpha, the compiler succeeds in compiling functions
2985 returning a known number of arguments greater than 63.
2986 ** fixed handling of invalid NIL arguments in keyword position
2988 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
2990 ** provided a readably-printable representation for RANDOM-STATE
2992 ** ensured that pathnames, where they have a namestring, always
2993 print using #P"..." syntax.
2995 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
2996 * Support for the forthcoming 2.0 version of the NetBSD kernel
2997 running on x86 hardware has been added. (thanks to Perry
2998 E. Metzger most immediately, and others for their past work)
2999 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
3000 current release version; SBCL's OpenBSD support had been broken
3001 since about the time of OpenBSD's switch to ELF binary format.)
3002 * [placeholder for DX summary]
3003 ** user code with &REST lists declared dynamic-extent, under high
3004 speed or space and low safety and debug optimization policy.
3005 * The manual has been converted to Texinfo format and the debugger
3006 chapter from the cmucl manual has been added.
3007 * A facility has been added to extract documentation strings from
3008 sbcl and store them as Texinfo-formatted snippets for inclusion in
3009 the manual (via Texinfo's @include directive)
3010 * bug fix: compiler emitted division in optimized DEREF. (thanks for
3011 the test case to Dave Roberts)
3012 * bug fix: multidimensional simple arrays loaded from FASLs had fill
3013 pointers. (reported by Sean Ross)
3014 * bug fix: PROFILE output is printed nicely even for large numerical
3015 values. (thanks to Zach Beane)
3016 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
3017 greater than 32 handle EOF correctly.
3018 * bug fix: on X86 an immediate argument of the IMUL instruction is
3019 correctly printed in disassembly. (thanks to Lutz Euler)
3020 * bug fix: class slots in redefined classes preserve their old
3021 values. (thanks to Bruno Haible and Nikodemus Siivola)
3022 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
3023 succeeds. (reported by Marco Baringer)
3024 * fixed some bugs revealed by Paul Dietz' test suite:
3025 ** READ-SEQUENCE now works on ECHO-STREAMs.
3026 ** RATIONALIZE works more according to its specification. (thanks
3029 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
3030 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
3031 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
3032 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
3033 should matter to you only if you rebind the printer control
3034 variables and then find you want different bindings in the
3035 debugger than in the ordinary execution of your program.)
3036 * The runtime build system has been tweaked to support building
3037 (on SPARC/SunOS) using a C compiler which invokes Sun's own
3038 assembler and linker. (thanks to Nikodemus Siivola)
3039 * Unbound, undefined, undeclared variables now trigger full
3040 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
3041 more often programmer error than deliberate exploitation of undefined
3043 * optimization: the hash algorithm for strings has changed to one
3044 that is less vulnerable to spurious collisions. (thanks to Juho
3046 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
3047 needless bounds checking. (thanks to Juho Snellman)
3048 * optimization: implemented multiplication as a modular
3049 (UNSIGNED-BYTE 32) operation on the PPC backend.
3050 * fixed some bugs revealed by Paul Dietz' test suite:
3051 ** ADJUST-ARRAY now copies the datum in a zero rank array if
3053 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
3054 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
3055 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
3057 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
3059 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
3061 ** ECHO-STREAMs no longer attempt to echo the end of file value to
3062 their output stream on EOF from read.
3063 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
3064 have been read to end-of-file.
3065 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
3067 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
3068 description of determination of which consecutive characters
3070 ** Printing the "Space" character with escaping on now yields "#\\ ",
3071 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
3072 ** Reading floating-point numbers with *READ-BASE* set to a number
3073 less than 10 works correctly.
3074 ** Reading floating-point numbers with *READ-BASE* set to a number
3075 more than 10 works correctly.
3076 ** Printing with *PRINT-READABLY* targets the standard readtable, not
3077 the readtable currently in effect.
3079 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
3080 * minor incompatible change: parsing of namestrings on a physical
3081 (Unix) host has changed; numbers after the final #\. in a
3082 namestring are no longer interpreted as a version field. This is
3083 intented to be largely invisible to the user, except that the
3084 meaning of the namestring "*.*.*" has changed: it now refers to a
3085 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
3086 should usually be replaced by
3087 (make-pathname :name :wild :type :wild :version :wild)
3088 with the added benefit that this is more likely to be portable.
3089 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
3090 option to OPEN now signals an error if the file being opened
3091 exists; this may have an impact on existing code.
3092 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
3093 signals received, on the PowerPC platforms (both Linux and
3094 Darwin). (thanks to Pierre Mai for pointing out the location of
3096 * several fixes on OS X: The system now builds and runs cleanly on
3097 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
3098 (thanks to Brian Mastenbrook)
3099 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
3100 second-resolution: integer multiples of 1/3600 between -24 and 24.
3101 (thanks to Vincent Arkesteijn)
3102 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
3103 type when called with 1 argument; PEEK-CHAR checked type of
3104 PEEK-TYPE only after having read first character from a
3105 stream. (reported by Peter Graves)
3106 * bug fix: the garbage collector now has much better locality
3107 behaviour, and in particular no longer treats all memory as being
3108 exhausted when many small objects point to each other in a deeply
3110 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
3111 recognized as being TYPEP their class.
3112 * bug fix: the PUSHNEW documentation string has been corrected.
3113 (thanks to Vincent Arkesteijn)
3114 * bug fix: defaulting of the value for the last of an atypically
3115 large number of multiple values being bound was not being
3116 performed correctly on the Alpha or PPC platforms
3117 * optimization: implemented multiplication as a modular
3118 (UNSIGNED-BYTE 32) operation on the x86 backend.
3119 * optimization: SEARCH on simple-base-strings can now be open-coded.
3120 (see also contrib/compiler-extras.lisp for inspiration for
3121 teaching the compiler about the Boyer-Moore algorithm).
3122 * value, returned by MAX (and MIN) called with several EQUALP, but
3123 not EQL, arguments now does not depend on compiler settings.
3124 * fixed some bugs revealed by Paul Dietz' test suite:
3125 ** in stack analysis liveness information is propagated from
3126 non-local entry points.
3127 ** pathwise CAST removing failed when the CAST node did not start
3129 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
3130 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
3132 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
3133 host is already defined.
3134 ** RENAME-FILE works on streams instead of signalling an internal
3136 ** PEEK-CHAR uses the current readtable when determining whether
3137 or not a character is whitespace.
3138 ** MERGE-PATHNAMES handles the case when the pathname does not
3139 specify a name while the default-pathname specifies a version.
3140 ** Pathnames now stand a better chance of respecting print/read
3142 ** Attempting to use standardized file system operators with a
3143 pathname with invalid :DIRECTORY components signals a
3145 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
3147 ** DIRECTORY on logical pathnames is more correct.
3148 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
3149 signal a TYPE-ERROR if their argument is not a stream.
3150 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
3151 designator argument does not designate a stream.
3152 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
3153 examining the synonym.
3154 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
3156 ** OPEN and WITH-OPEN-STREAM allow opening streams with
3157 element-type larger than ([UN]SIGNED-BYTE 32).
3159 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
3160 * When built with the :SB-FUTEX feature, threaded builds now take
3161 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
3162 for faster/more reliable mutex and condition variable support.
3163 * Incompatible change (but one you probably shouldn't have been using
3164 anyway): the interface and code for arbitrating between multiple
3165 threads in the same user session has been redesigned.
3166 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
3167 error when called without an explicit environment argument.
3168 (thanks to Nikodemus Siivola)
3169 * bug fix: buffered :DIRECTION :IO streams are less likely to become
3170 confused about their position. (thanks to Adam Warner and Gerd
3172 * bug fix: Pretty printing backquoted forms with unquotations in the
3173 argument list position of various code constructs such as LAMBDA
3174 now works correctly. (reported by Paul Dietz)
3175 * bug fix: Pretty printing unquotations no longer loses all
3176 stream position information.
3177 * optimization: performance of string output streams is now less
3178 poor for multiple small sequence writes.
3179 * optimization: performance of CSUBTYPEP in the presence of complex
3180 expressions involving CONS and NOT many times has been improved.
3181 (reported by Paul Dietz)
3182 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
3184 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
3185 streams for the REPL, for the debugger, and so on. (thanks to
3187 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
3188 * fixed some bugs revealed by Paul Dietz' test suite:
3189 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
3190 is ignored if it is too small, rather than propagating through
3191 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
3192 ** extremely complex negations of CONS types were not being
3193 sufficiently canonicalized, leading to inconsistencies in
3195 ** VALUES tranformer lost derived type.
3197 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
3198 * fixed a bootstrapping bug: the build process no longer assumes
3199 that the various BOOLE-related constants have the same value in
3200 host and target lisps. (noted by Paul Dietz' test suite on an
3201 SBCL binary built from CLISP)
3202 * The system can now be dynamically linked on the MIPS platform,
3203 which enables dynamic loading of foreign code from Lisp. (thanks
3204 to Ralf Baechle for discussions on the MIPS ABI)
3205 * The system now records debugging information for its own source
3206 files in a filesystem-position-independent manner, relative to
3207 the "SYS" logical host.
3208 * fixed a compiler bug: MV-LET convertion did not check references
3209 to the "max args" entry point. (reported by Brian Downing)
3210 * tweaked disassembly notes to be less confident about proclaiming
3211 some instruction as an LRA. (thanks to Brian Downing)
3212 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
3213 now each have their own history, command character, and other
3214 characteristics. (thanks to David Lichteblau)
3215 * fixed some bugs revealed by Paul Dietz' test suite:
3216 ** compiler failure in compiling LOGAND expressions including a
3218 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
3219 shift greater than 32.
3220 ** FLUSH-DEST did not mark blocks for type check regeneration.
3221 ** HANDLER-CASE failed to accept declarations in handler clauses
3222 in some circumstances.
3224 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
3225 * New code in contrib/sb-introspect (still probably not entirely
3226 stable yet) provides some support for smart Lisp development
3227 environments like SLIME.
3228 * The conditions signalled for errors occurring when loading .fasl
3229 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
3230 in a way which should help ASDF recover gracefully.
3231 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
3232 stuff has been cleaned up. If you code contrib/ stuff, this might
3233 affect you, and you can look at contrib/README, contrib/STANDARDS,
3234 and/or the 0.8.4.27 diff to check.
3235 * In full calls the compiler now does not generate checks for declared
3236 argument types for all arguments.
3237 * various threading fixes
3238 ** and some experimental patches which didn't make it into
3239 the main tree for this release, but which are shipped in
3240 contrib/experimental-thread.patch as a possible fix for some
3241 failures (deadlock, spinning...) in GC-intensive multithreaded
3243 * fixed PPC build problem (source code incompatibility of different
3244 library versions): added offsetof() hackery which attempts to divine
3245 where glibc maintainers put uc_mcontext today
3246 * fixed bug 282: compiler does not trust type assertions while passing
3247 arguments to a full call.
3248 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
3249 &OPTIONAL VALUES type parameter.
3250 * fix bug 214: algorithm for noting rejected templates is now more
3251 similar to that of template seletion. (also reported by rydis on
3253 * fixed bug 141b: printing backquoted information readably and prettily
3254 inserts a space where necessary.
3255 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
3256 (CHARACTER 10) are now reported as errors, rather than propagated
3257 as unknown types. (reported by piso on #lisp)
3258 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
3259 with values NIL and :ERROR. (thanks to Milan Zamazal)
3260 * fixed bug 191c: CLOS now does proper keyword argument checking as
3261 described in CLHS 7.6.5 and 7.6.5.1.
3262 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
3263 longer raise an error; further, using a list as a for-as-arithmetic
3264 counter now raises a meaningful error.
3265 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
3266 now understood by sequence creation functions such as MAKE-SEQUENCE
3268 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
3269 a STRING-INPUT-STREAM.
3270 * compiler enhancement: SIGNUM is now better able to derive the type
3272 * type declarations inside WITH-SLOTS are checked. (reported by
3274 * fixed some bugs revealed by Paul Dietz' test suite:
3275 ** incorrect optimization of TRUNCATE for a positive first
3276 argument and negative second.
3277 ** compiler failure in let-convertion during flushing dead code.
3278 ** compiler failure while deriving type of TRUNCATE on an
3279 interval, containing 0.
3280 ** ASH of a negative bignum by a negative bignum count now returns
3282 ** intersection of CONS types now canonicalizes properly, fixing
3283 inconsistencies in SUBTYPEP.
3285 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
3286 * incompatible change: The --disable-debugger command line
3287 option now clobbers the debugger at a more fundamental
3288 level, by redefining #'INVOKE-DEBUGGER instead of by
3289 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
3290 is specified by ANSI to ignore *DEBUGGER-HOOK* and
3291 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
3292 enter the debugger REPL and then suffer recursive errors
3293 because *DEBUG-IO* is also messed up in --disable-debugger mode;
3294 while under the new system, BREAK in --disable-debugger mode
3295 terminates the system just as an unhandled error would.
3296 * fixed compiler performance when processing loops with a step >1;
3297 * bug fix: DOCUMENTATION now retrieves generic function
3298 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
3299 support has been systematized, and now supports the methods
3300 specified by ANSI, along with a default method and a method for
3301 slot documentation. (reported by Nathan Froyd)
3302 * bug fix: effective methods associated with a generic function are
3303 no longer cached over a change of that generic function's method
3304 combination. (reported by Andreas Fuchs)
3305 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
3306 names a non-existent directory. (thanks to Andreas Fuchs)
3307 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
3308 the PPC platform, lead to stack corruption; this has been fixed.
3309 (reported by Rainer Joswig)
3310 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
3311 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
3312 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
3313 arithmetic in general, is now much more reliable on the PPC
3315 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
3316 platform now returns the right answer.
3317 * optimization: restored some effective method precomputation in
3318 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
3319 precomputation is now tunable.
3320 * optimization: compiler-internal data structure use has been
3321 reviewed, and changes have been made that should improve the
3322 performance of the compiler by about 20%.
3323 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
3324 simple-base-strings and simple-bit-vectors is improved.
3325 * optimization: the optimization of 32-bit logical and arithmetic
3326 functions introduced in version 0.8.3 on the x86 has been
3327 implemented on the mips, ppc and sparc platforms; an
3328 implementation of the same facility, but for 64-bit arithmetic,
3329 has been added for the alpha.
3330 * microoptimization: the compiler is better able to make use of the
3331 x86 LEA instruction for multiplication by constants.
3332 * bug fix: in some situations compiler did not report usage of
3333 generic arithmetic in (SPEED 3) policy.
3334 * bug 145b fix: compiler used wrong type specifier while converting
3335 MEMBER-types to numeric.
3336 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
3338 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
3339 index argument now works properly on the Alpha platform.
3340 * bug fix: floating point exception treatment on the Alpha platform
3342 * bug fix: FILE-POSITION works much better on string input and
3343 output streams. (thanks to Nikodemus Siivola)
3344 * bug fix: many threading/garbage collection symptoms sorted.
3345 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
3346 might be pseudo-atomic.
3347 * internal change: Stopping for GC is now done with signals not
3348 ptrace. GC is now done in whichever thread wanted it, instead of
3350 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
3352 * bug fix: result form in DO is not contained in the implicit
3354 * incompatible change: ICR structure is changed; the value part of
3355 CONTINUATION is now called LVAR; corresponding functions are
3356 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
3357 * added type deriver for ISQRT (thanks to Robert E. Brown).
3358 * bug fix: better support for loading from the command line when an
3359 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
3361 * fixed some bugs revealed by Paul Dietz' test suite:
3362 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
3363 ** ROUND and FROUND now give the right answer when given very
3364 small float arguments.
3365 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
3367 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
3368 ** (GCD 0 <negative-integer>) returned <negative-integer>.
3369 ** LCM should return a non-negative integer.
3370 ** PARSE-INTEGER returned the index of a terminator instead of the
3371 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
3372 ** PARSE-INTEGER returned an incorrect index being applied to a
3374 ** LCM with two arguments of 0 returns 0 rather than signalling
3376 ** unsigned addition of a 32-bit constant with the high bit set no
3377 longer causes an internal compiler error on the x86.
3378 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
3379 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
3380 with negative last argument.
3381 ** byte specifiers with zero size and position no longer cause
3382 an error during type derivation.
3383 ** bignum multiplication on the Alpha platform now returns the
3385 * porting: The system now builds on SuSE AMD64, although it still
3386 generates a 32-bit binary.
3387 * .fasl file incompatibility: The fasl file version number has
3388 been incremented (because of the changes to internal compiler
3389 data structures referred to above).
3391 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
3392 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
3393 more accurately, on the Darwin kernel running on PowerPC hardware.
3394 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
3395 * Compiler code deletion notes now signal a condition of type
3396 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
3397 an associated MUFFLE-WARNING restart.
3398 * The compiler now performs limited argument count validation of
3399 constant format strings in FORMAT, and where appropriate in ERROR,
3400 CERROR and WARN. (thanks to Gerd Moellmann)
3401 * New ASDF-INSTALL contrib can be used for automatic download and
3402 installation of third-party Lisp code from CCLAN or other sites
3404 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
3405 which forces another thread to execute a function supplied by the
3407 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
3408 now accept and act upon their :ELEMENT-TYPE keyword argument.
3409 (reported by Martin Atzmueller, Edi Weitz)
3410 * bug fix: FILE-POSITION now accepts position designators up to
3411 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
3412 is the greater. (thanks to Patrik Nordebo)
3413 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
3414 Kalle Olavi Niemitalo)
3415 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
3416 printable. (reported by Eric Marsden)
3417 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
3418 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
3419 * x86 bug fix in control stack exhaustion checking: now shows backtrace
3420 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
3421 (thanks to Stig Sandoe)
3422 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
3423 UNREAD-CHAR now correctly includes the unread character in the
3424 target sequence. (thanks to Gerd Moellmann)
3425 * bug fix in threaded builds: the system can now be suspended and
3426 resumed by shell job control with minimal disruption.
3427 * bug fixes in times and timezones >2038AD
3428 * better handling of "where is GNU make?" problem in build scripts
3429 (thanks to Nikodemus Siivola)
3430 * new optimization: inside a named function any reference to a
3431 function with the same name is considered to be a self-reference;
3432 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
3433 optimization quality.
3434 * new optimization on x86: logical functions and + now have
3435 optimized (UNSIGNED-BYTE 32) versions, which are automatically
3436 used when the result is truncated to 32 bits.
3437 * VALUES declaration is partially enabled.
3438 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
3439 * fixed some bugs revealed by Paul Dietz' test suite:
3440 ** The system now obeys the constraint imposed by
3441 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
3442 types form a lattice under type intersection.
3443 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
3444 ** ASSOC now ignores NIL elements in an alist.
3445 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
3446 and (1+ MOST-POSITIVE-FIXNUM) answers.
3447 ** The addition of a method with invalid qualifiers to a generic
3448 function does not cause an error to be signalled immediately;
3449 a warning is signalled, and the error is generated only on
3450 calling the generic function.
3451 * changed .fasl file version number, in part to add type codes for
3452 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
3453 obscure ANSI requirements
3455 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
3456 * fixed bug 148: failure to inline-expand a local function left
3457 garbage, confusing the compiler.
3458 * fixed bugs 3cd: structure slot readers perform type check if the
3459 slot can have an invalid value (i.e. it is either not initialized
3460 or can be written with a less specific slot writer).
3461 * bug fix: the compiler now traps array references to elements off
3462 the end of an array; previously, the bounds checking in some
3463 circumstances could go off-by-one.
3464 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
3466 * type declarations for array element types now obey the description
3467 on the CLHS page "Declaration TYPE", as per discussions on
3468 sbcl-help around 2003-05-08. This means that a declaration
3469 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
3470 declaration, all references to BAR will be asserted or assumed
3471 (with THE, so dependent on compiler policy) to involve objects of
3472 type FOO. Note that no such declaration is implied in
3473 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
3474 * declared types of functions from the "Conditions"
3475 chapter. (reported by Paul Dietz)
3476 * bug fix: CERROR accepts a function as its first argument.
3477 * bug fix: NTH an NTHCDR accept a bignum as index
3478 arguments. (reported by Adam Warner)
3479 * optimization: character compare routines now optimize comparing
3480 against a constant character. (reported by Gilbert Baumann)
3481 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
3482 argument now works properly on the MIPS platform.
3483 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
3484 * repeated evaluation of the same DEFSTRUCT, a slot of which is
3485 declared to have a functional type, does not cause an error
3487 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
3488 many :DEFAULT-INITARGS. (reported by Istvan Marko)
3489 * fixed bug: if last continuation of a deleted block has a
3490 destination, this destination should be deleted too. (reported by
3492 * fixed a bug in the bootstrap process: the host compiler's values
3493 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
3494 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
3495 test case from Patrik Nordebo)
3496 * improved the ability of the disassembler on the PPC platform to
3497 provide helpful disassembly notes.
3498 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
3499 the class in more cases than previously.
3500 * bug fix: FILE-POSITION now understands :START and :END for
3501 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
3502 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
3503 8) data. (thanks to David Lichteblau)
3504 * bug fix: it is possible to add a method to a generic function
3505 without lambda list.
3506 * bug fix: reader failed to signal END-OF-FILE inside an
3507 object representation. (reported by Nikodemus Siivola)
3508 * fixed some bugs revealed by Paul Dietz' test suite:
3509 ** LAST and [N]BUTLAST should accept a bignum.
3510 ** condition slot accessors are methods.
3511 ** (VECTOR NIL) is a subtype of STRING.
3513 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
3514 * minor incompatible change: some nonsensical specialized lambda
3515 lists (used in DEFMETHOD) which were previously ignored now signal
3517 * minor incompatible change: the system is now aware of the types of
3518 variables in the COMMON-LISP package, and will signal errors for
3519 most violations of these type constraints (where previously they
3520 were silently accepted).
3521 * minor incompatible change: COMPILE-FILE now uses the freedom
3522 afforded (ANSI 3.2.2.3) to use derived function types for
3523 functions defined in the same file. This also permits the system
3524 to warn on static type mismatches and function
3525 redefinition. (Currently it does not work with high DEBUG level.)
3526 * minor incompatible change: VALUES declaration is disabled.
3527 * When issuing notes, the compiler now signals a condition of type
3528 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
3529 restart for use in user handlers. It is expected that the
3530 COMPILER-NOTE condition will eventually become a condition
3531 supertype to a hierarchy of note types, which will then be
3532 handleable in a similar fashion. However, at the moment, no such
3533 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
3534 but it's an implementation detail, not a classification for the
3536 * Changes in type checking closed the following bugs:
3537 ** type checking of unused values (192b, 194d, 203);
3538 ** template selection based on unsafe type assertions (192c, 236);
3539 ** type checking in branches (194bc).
3540 * A short form of VALUES type specifier has ANSI meaning (it has
3541 increased the number of situations when SBCL cannot perform type
3543 * fixed bug in DEFSTRUCT: once again, naming structure slots with
3544 keywords or constants is permissible.
3545 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
3546 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
3547 classes. (thanks to Antonio Martinez)
3548 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
3549 outputs FRESH-LINE or TERPRI, and no longer converts its stream
3550 argument to a pretty-print stream. Instead, it leaves any such
3551 operations to DESCRIBE-OBJECT methods.
3552 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
3554 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
3555 lambda lists. (thanks to David Lichteblau)
3556 * bug fix: Defining a generic function with a :METHOD-CLASS being a
3557 subclass of STANDARD-METHOD no longer causes stack exhaustion.
3558 (thanks to Gerd Moellmann)
3559 * fixed bug 246: increased compilation speed of long
3560 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
3562 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
3564 * DEFCONSTANT now throws a condition of type
3565 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
3566 constant to a non-EQL value; CONTINUE and ABORT restarts
3567 respectively change and preserve the value.
3568 * fixed bug 63: The code walker, part of the implementation of CLOS,
3569 is now better at handling symbol macros.
3570 * bug fix: There is no longer an internal implementation type named
3571 CL:LENGTH. (reported by Raymond Toy)
3572 * bug fix: In macro-like defining macros/special operators the
3573 implicit block does not enclose the lambda list.
3574 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
3575 enclosed in parentheses) are not suitable as type specifiers, and
3576 their use properly signals an error now.
3577 * bug fix: An argument count mismatch for a type specifier in code
3578 being compiled no longer causes an unhandled error at compile
3579 time, but signals a compile-time warning.
3580 * fixed simple vector readable printing
3581 * bug fix: DESCRIBE takes more care over whether the class
3582 precedence list slot of a class is bound before accessing it.
3583 (reported by Markus Krummenacker)
3584 * bug fix: FORMATTER can successfully compile pretty-printer format
3585 strings which use variants of the ~* directive inside.
3586 * bug fix: SEARCH now applies its TEST predicate to the elements of
3587 the arguments in the correct order. (thanks to Wolfhard Buss)
3588 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
3589 in type inference. (thanks to Robert E. Brown)
3590 * bug fix: Reading in symbols with an explicit package name of ""
3591 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
3592 * fixed some bugs revealed by Paul Dietz' test suite:
3593 ** NIL is now allowed as a structure slot name.
3594 ** Arbitrary numbers, not just REALs, are allowed in certain
3595 circumstances in LOOP for-as-arithmetic clauses.
3596 ** Multiple class redefinitions before slot access no longer
3597 causes a type error.
3598 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
3599 association between the name and a class.
3600 ** Generic functions with non-standard method-combination and over
3601 five methods all of which return constants no longer return NIL
3602 after the first few invocations. (thanks to Gerd Moellmann)
3603 ** CALL-NEXT-METHOD with no arguments now passes the original
3604 values of the arguments, even in the presence of assignment.
3605 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
3607 ** DISASSEMBLE works with closures and funcallable instances.
3608 ** ADD-METHOD now returns the generic function, not the new method.
3609 ** FIND-METHOD signals an error if the lengths of the specializers
3610 is incompatible with the generic function, even if the ERRORP
3612 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
3613 which its argument is a member.
3614 ** DEFCLASS only redefines the class named by its class-name
3615 argument if that name is the proper name of the class;
3616 otherwise, it creates a new class.
3617 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
3618 of the UNBOUND-SLOT condition to the name of the slot.
3619 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
3620 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
3621 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
3622 SLOT-MAKUNBOUND in the specified fashion.
3624 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
3625 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
3626 cross-compilation host. As a consequence, we can now bootstrap our
3627 way up to SBCL starting with a bare gcc toolchain and human-readable
3628 source code (first the source to CLISP, then the source to SBCL).
3629 * A contributed module containing a partial implementation of the
3630 simple-streams interface has been included. (thanks to Rudi
3632 * A contributed module implementing the RFC1321 Message Digest
3633 Algorithm, known as MD5, has been included.
3634 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
3635 no longer has any effect, as the code controlled by this feature
3636 has been deleted. (As far as we know, no-one has ever built using
3637 this feature, and its semantics were confused in any case).
3638 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
3639 work on conditions (as required by the ANSI specification),
3640 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
3641 expected behaviour on conditions. Users should note, however,
3642 that such behaviour is not required by the ANSI specification,
3643 and so use of this behaviour may render their code unportable.
3644 * fixed some bugs revealed by Paul Dietz' test suite:
3645 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
3647 ** &ENVIRONMENT parameter in macro lambda list is bound first.
3648 ** SXHASH on condition objects no longer returns NIL.
3649 ** :ALLOCATION :CLASS slots are better treated; their values are
3650 updated on class redefinition, and initforms inherited from
3651 superclasses are applied.
3652 ** REMOVE-METHOD returns its generic function argument even when
3653 no method was removed.
3654 ** SHARED-INITIALIZE now initializes the values of the requested
3655 slots, including those with :ALLOCATION :CLASS.
3656 ** ALLOCATE-INSTANCE now works on structure classes defined via
3657 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
3659 ** SLOT-EXISTS-P now works on conditions, as well as structures
3661 ** MAKE-LOAD-FORM now has the required methods on
3662 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
3663 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
3664 keyword, and now implements the SLOT-NAMES argument.
3665 ** methods with &OPTIONAL arguments no longer allow too many
3666 arguments to be passed in the call without error.
3667 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
3668 option is consistent with the required arguments of the generic
3669 function lambda list.
3670 * bug fix: REQUIRE accepts a string designator. (Thanks to
3672 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
3673 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
3674 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
3675 * bug fix: The compiler now checks for duplicated variables in macro
3677 * bug fix: SETQ on globals returns the correct value.
3678 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
3679 not a COMPILER-ERROR (followed by some other strange error on
3680 choosing the CONTINUE restart).
3681 * bug fix: make.sh and friends are now more consistent in the way that
3682 they look for GNU "make".
3684 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
3685 * experimental native threads support (on x86 Linux >=2.4 only).
3686 This is not compiled in by default: you need to add :SB-THREAD to
3687 the target features. See the "Beyond ANSI" chapter of the manual
3689 * fix for longstanding nonANSIism: The old distinction between
3690 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
3691 The return value from CL:FIND-CLASS is now a CLOS class, and
3692 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
3693 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
3694 * An interface to the MetaObject Protocol, as described in Kiczales,
3695 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
3696 MIT Press, 1991, is available from the SB-MOP package.
3697 * incompatible change: the SB-PCL package should now be considered
3698 a private implementation detail, and no longer a semi-private MOP
3700 * minor incompatible change: due to rearrangement for threads, the
3701 control stack and binding stack are now allocated at arbitrary
3702 addresses instead of being hardcoded per-port. Users affected by
3703 this probably have to be doing advanced things with shared
3704 libraries, and will know who they are.
3705 * minor incompatible change: Previously, all --eval forms used were
3706 processed with READ before any of them were processed with EVAL.
3707 Now each --eval form is processed with both READ and EVAL before
3708 the next --eval form is processed. (Thus package operations like
3709 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
3710 work as the user might reasonably expect.)
3711 * minor incompatible change: *STANDARD-INPUT* is now only an
3712 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
3714 * minor incompatible change: Y-OR-N-P is now character-oriented,
3715 not line oriented. Also, YES-OR-NO-P now works without errors.
3716 (thanks to Antonio Martinez)
3717 * sb-aclrepl module improvements: an integrated inspector, added
3718 repl features, and a bug fix to :trace command.
3719 * Known functions, which cannot be open coded by the backend, are
3720 considered to be able to check types of their arguments. (fixing
3721 a bug report by Nathan J. Froyd)
3722 * fixed a bug in computing method discriminating functions: It is
3723 now possible to define methods specialized on classes which have
3724 forward-referenced superclasses. (thanks to Gerd Moellmann)
3725 * fixed evaluation order in optional entries (reported by Gilbert
3727 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
3728 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
3729 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
3730 required-by-AMOP NAME argument, as well as CLASS and
3731 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
3732 * fixed bug 20: DEFMETHOD can define methods using names that are
3733 not the proper names of classes to designate class specializers.
3734 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
3735 Unix file descriptors, instead of blowing up. (thanks to Antonio
3737 * Garbage collection refactoring: user-visible change is that a
3738 call to the GC function during WITHOUT-GCING will not do garbage
3739 collection until the end of the WITHOUT-GCING. If you were doing
3740 this you were probably losing anyway.
3741 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
3742 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
3743 TYPEP the latter but not the former.
3744 * The compiler issues a full WARNING for calls to undefined functions
3745 with names from the CL package.
3746 * MAP-INTO for a vector destination is open coded. (reported by
3747 Brian Downing on c.l.l)
3748 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
3749 documentation string.
3750 * fixed some bugs revealed by Paul Dietz' test suite:
3751 ** COPY-ALIST now signals an error if its argument is a dotted
3753 ** Condition slots are now accessed more correctly in the presence
3754 of multiple initargs for a given slot.
3755 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
3756 exclude restarts of the same name associated with a different
3758 ** DEFCLASS of forward-referenced classes with another
3759 forward-referenced class in the superclasses list no longer
3761 ** Condition slots are now initialized once each, not multiple
3762 times. (thanks to Gerd Moellmann)
3763 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
3765 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
3766 ** NSET-EXCLUSIVE-OR does not return extra elements when its
3767 arguments contain duplicated elements.
3768 ** RESTART-CASE understands local macros.
3769 ** RESTART-CASE associates exactly its own restarts with a condition.
3770 ** ENDP in safe mode checks its argument to be of type LIST.
3771 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
3772 in question is unbound.
3773 ** Optimized MAKE-INSTANCE functions no longer cause internal
3774 assertion failures in the presence of duplicate initargs.
3775 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
3776 ** Side-effectful :DEFAULT-INITARGS have their side-effects
3777 propagated even in the ctor optimized implementation of
3779 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
3781 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
3782 * a better implementation of SXHASH on (simple) bit vectors,
3783 measured both in execution speed and in distribution of results
3784 over the positive fixnums, has been installed. Likewise, a better
3785 implementation of EQUAL for simple bit vectors is now available.
3786 * fixed CEILING optimization for a divisor of form 2^k.
3787 * fixed bug 240 (emitting extra style warnings "using the lexical
3788 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
3789 by Antonio Martinez)
3790 * fixed SXHASH, giving different results for NIL depending on type
3791 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
3792 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
3793 variable. (found by Rolf Wester)
3794 * SBCL does not ignore type declarations for special
3795 variables. (reported by rif on c.l.l 2003-03-05)
3796 * some bug fixes in contrib/sb-aclrepl/
3797 * fixed some bugs revealed by Paul Dietz' test suite:
3798 ** a bug in the CONS type specifier, whereby the CAR and CDR
3799 types got intertwined, has been fixed;
3800 ** the type system is now able to reason about the interaction
3801 between INTEGER and RATIO types more completely;
3802 ** APPEND, [N]REVERSE and NRECONC check that those their
3803 arguments, which must be proper lists, are really so;
3804 ** An array specialized to be unable to hold elements has been
3805 implemented, as required -- yes, really -- by ANSI;
3806 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
3807 on malformed property lists;
3809 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
3810 * incompatible packaging change: in line with Unix convention,
3811 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
3812 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
3813 * REQUIRE and PROVIDE are now optionally capable of doing something
3814 useful. See the documentation string for REQUIRE.
3815 * infrastructure for a managed SBCL contrib system: contributed
3816 modules in this release include:
3817 ** the ASDF system definition facility;
3818 ** an interface to the BSD Sockets API;
3819 ** an ACL-like convenience interface to the repl;
3820 (thanks to Kevin Rosenberg)
3821 ** an implementation of ROTATE-BYTE, with efficient implementation
3823 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
3824 gives a closer approximation to the right answer than previously.
3825 (thanks to Raymond Toy)
3826 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
3827 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
3828 optional environment arguments, as required by ANSI.
3829 * fixed bugs in other functions taking environment objects, allowing
3830 calls with an explicit NIL environment argument to be compiled
3832 * fixed bug 228: primary return values from
3833 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
3834 COMPILE or FUNCTION.
3835 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
3836 :TYPE will no longer signal errors on innocuous objects.
3837 * fixed bug 231b: SETQ is better at respecting type declarations in
3838 the lexical environment.
3839 * fixed a bug in DEFCLASS: classes named by symbols with no or
3840 unprintable packages can now be defined.
3841 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
3842 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
3843 * fixed compiler failure related to checking types of functions.
3844 (reported by Robert E. Brown)
3845 * the compiler is now much more consistent in its error-checking
3846 treatment of bounding index arguments to sequence functions: in
3847 (SAFETY 3) code, errors will be signalled in almost all cases if
3848 invalid sequence bounding indices are passed to functions defined
3849 by ANSI to operate on sequences.
3850 * fixed a bug in the build procedure: documentation of SBCL-specific
3851 packages is now preserved and available in the final Lisp image.
3852 * lifted FDEFINITION lookup out of loops in the implementation of
3853 many list operations. (thanks to Robert E. Brown)
3854 * fixed a bug in the reader: the #n# reader macro now works for
3855 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
3856 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
3857 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
3858 E. Brown and Tony Martinez respectively)
3859 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
3860 SLOT-BOUNDP: in particular, it is now able to optimize them much
3861 better, and is now not vulnerable to having packages renamed.
3862 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
3863 always called when a slot is not present in an instance. (thanks
3865 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
3866 longer signal an error on unreading a character following EOF on
3867 the previous constituent stream. (thanks to Tony Martinez)
3868 * fixed some bugs revealed by Paul Dietz' test suite:
3869 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
3870 not just nonnegative fixnums;
3871 ** the logical bit-array operators such as BIT-AND now accept an
3872 explicit NIL for their "opt-arg" argument (to indicate a
3873 freshly-consed result bit-array);
3874 ** ELT now signals an error on an invalid sequence index in safe
3876 ** the type system is now cleverer about negations of numeric
3877 types, and consequently understands the BIGNUM and RATIO types
3879 ** the type system is now cleverer about the interaction between
3880 INTEGER and RATIO types: while bugs still remain, many more
3881 cases are accurately computed;
3882 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
3883 if it is in the last clause;
3884 ** CONSTANTLY now correctly returns a side-effect-free function in
3886 ** DECLARE is no longer treated as a special-operator; in
3887 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
3888 * incremented fasl file version number due to the change in the
3889 DEFSTRUCT-SLOT-DESCRIPTION structure.
3891 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
3892 * minor incompatible change: code processed by the "interpreter" or
3893 EVAL now has a compilation optimization policy of (DEBUG 2)
3894 (changed from (DEBUG 1)) to improve debuggability of interactive
3895 development, and to allow the use of the debug RETURN command in
3897 * an experimental implementation of the RETURN command for the
3898 debugger has been included. (thanks to Frederik Kuivinen)
3899 * fixed bug 62: constraints were not propagated into a loop.
3900 * fixed bug in embedded calls of SORT (reported and investigated by
3902 * fixed some bugs revealed by Paul Dietz' test suite:
3903 ** printing and reading of arrays with some dimensions having
3904 length 0 (thanks to Gerd Moellmann);
3905 ** BOA constructor with &AUX argument without a default value does
3906 not cause a type error;
3907 ** CONSTANTP now returns true for all self-evaluating objects.
3909 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
3910 * fixed bug 127: DEFSTRUCT now does not clobber old structure
3911 accessors that are related by inheritance, as specified in the
3912 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
3913 Valtteri Vuorikoski)
3914 * The compiler is now able to inline functions that were defined in
3915 a complex lexical environment (e.g. inside a MACROLET).
3916 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
3918 * Support for the upcoming FreeBSD-5.0 release has been included.
3919 (thanks to Dag-Erling Smorgrav)
3920 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
3921 effect when it is not in a toplevel context.
3922 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
3923 stand a better chance of being correct. (thanks to Gerd
3925 * fixed bug in COERCE, which now signals an error on coercing a
3926 rational to a bounded real type which excludes the expected
3928 * The compiler is now able to derive types more accurately from the
3929 COERCE and COMPILE functions.
3930 * fixed bug 223: functional binding is considered to be constant
3931 only for symbols in the CL package.
3932 * fixed bug 231: SETQ did not check the type of a variable being set
3933 (reported by Robert E. Brown)
3934 * A new optimization for MAKE-INSTANCE has been included, fixing
3935 various bugs (including relating to :ALLOCATION :CLASS slots and
3936 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
3938 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
3939 ** As required by ANSI, LOOP now disallows anonymous collection
3940 clauses such as COLLECT I in conjunction with aggregate boolean
3941 clauses such as THEREIS (= I 1);
3942 ** LOOP now signals an error when any variable is reused in the
3943 same loop (including the potentially useful construct analogous
3944 to WITH A = 1 WITH A = (1+ A);
3945 ** IT is only a special loop symbol within the first clause of a
3946 conditional loop clause;
3947 ** LOOP with a typed iteration variable over a hashtable now
3948 signals a type error iff it should.
3949 * fixed some other bugs revealed by Paul Dietz' test suite:
3950 ** FILE-STREAM now names the class previously known as FD-STREAM;
3951 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
3952 argument) no longer signals an error;
3953 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
3954 of the slot symbol, rather than using the current package
3955 ((:CONC-NAME "") continues to intern the slot's name in the
3957 * incremented fasl file version number, because of the incompatible
3958 change to the DEFSTRUCT-DESCRIPTION structure, and again because
3959 of the new implementation of DEFINE-COMPILER-MACRO.
3961 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
3962 * Support for building SBCL for MIPS platforms running in
3963 little-endian mode has now been checked in, and basic
3964 functionality on said platforms verified.
3965 * minor incompatible change: PCL now records the pathname of a file
3966 in which methods and the like are defined, rather than its
3968 * minor incompatible change: TRUENAME now considers the truename of
3969 a file naming a directory to be the pathname with :DIRECTORY
3970 component indicating that directory.
3971 * minor incompatible change: a NAMED clause in the extended form of
3972 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
3973 reason for the previous behaviour is unclear.
3974 * more systematization and improvement of CLOS and MOP conformance
3975 in PCL (thanks to Gerd Moellman and Pierre Mai):
3976 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
3978 ** DEFINE-METHOD-COMBINATION no longer signals an error for
3979 primary methods with no specializers;
3980 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
3982 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
3983 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
3984 FORWARD-REFERENCED-CLASSes; error reporting on
3985 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
3987 ** SXHASH on CLOS instances now uses a slot internal to the
3988 instance to return different numbers on distinct instances,
3989 while preserving the same return value through invocations of
3991 ** DEFMETHOD signals errors when methods with longer incongruent
3992 lambda lists are added to generic functions;
3993 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
3994 CLASS, as specified in AMOP;
3995 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
3996 on the order returned by the primary method for classes of
3997 class STANDARD-CLASS;
3998 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
3999 * fixed some bugs shown by Paul Dietz' test suite:
4000 ** DOLIST puts its body in TAGBODY;
4001 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
4003 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
4004 value producing form;
4005 ** if more variables are given to PROGV than values, extra
4006 variables are bound and made to have no value;
4007 ** NSUBSTITUTE on list arguments gets the right answer with
4009 ** ELT signals an error of type TYPE-ERROR when the index argument
4010 is not a valid sequence index;
4011 ** LOOP signals (at macroexpansion time) an error of type
4012 PROGRAM-ERROR when duplicate variable names are found;
4013 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
4014 ** FUNCALL of special-operators now cause an error of type
4016 ** PSETQ now works as required in the presence of side-effecting
4017 symbol-macro places;
4018 ** NCONC accepts any object as its last argument;
4019 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
4021 ** loop-for-as-package does not require a package to be explicitely
4023 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
4025 * fixed bug 166: compiler preserves "there is a way to go"
4026 invariant when deleting code.
4027 * fixed bug 172: macro lambda lists with required arguments after
4028 &REST arguments now cause an error to be signalled. (thanks to
4030 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
4031 bug. (thanks to Matthew Danish)
4032 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
4034 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
4035 arguments are lexically rebound. (thanks to Gerd Moellmann and
4037 * fixed bug 194: error messages are now more informative when there
4038 is no primary method applicable in a call to a generic
4039 function. (thanks to Gerd Moellmann)
4040 * fixed bug in command line argument checking (thanks to Julian
4042 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
4043 (thanks to Matthew Danish)
4044 * incremented fasl file version number, because of the
4045 SXHASH-related changes in the layout of CLOS data structures
4047 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
4048 * minor incompatible change: The runtime (the Unix executable named
4049 "sbcl") is now much pickier about the .core files it will load.
4050 Essentially it now requires .core files to descend from the same
4051 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
4052 as the runtime does. (The intent is to prevent the crashes which
4053 can occur, and which can even be reported as mysterious failures,
4054 when people patch the sources or change the build parameters
4055 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
4056 sbcl and .core files.)
4057 * fixed bug: VALUES-LIST is no longer optimized away.
4058 * fixed bug 142: The FFI conversion of C string values to Lisp
4059 string values no longer conses excessively. (thanks to Nathan
4060 Froyd porting Raymond Toy's fix to CMU CL)
4061 * began to systematize and improve MOP conformance in PCL (thanks to
4062 Nathan Froyd, Gerd Moellman and Pierre Mai):
4063 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
4065 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
4066 ** FINALIZE-INHERITANCE is now called on class finalization;
4067 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
4068 argument precedence order.
4069 * fixed bug 202: The compiler no longer fails on functions whose
4070 derived types contradict their declared type.
4071 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
4072 so it can be non-toplevel.
4073 * The fasl file version number has changed (because of the new
4074 implementation of DEFMACRO).
4075 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
4076 safe code, that any length requirement by their type-specifier
4077 argument is valid. The exceptions to this are described in bug
4079 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
4080 functions now check the types of their inputs as required by ANSI.
4081 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
4082 introduced symbol is DECLAREd to be SPECIAL.
4083 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
4084 * fixed bug: :COUNT argument to sequence functions may be negative
4085 * fixed bug: body of DO-SYMBOLS may contain declarations
4086 * fixed bug: PUSHNEW now evaluates its arguments from left to right
4087 (reported by Paul F. Dietz, fixed by Gerd Moellman)
4088 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
4089 symbol macro only once
4090 * fixed printing of call frame when argument list is unavailable
4091 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
4092 * compiler no longer signals WARNING on unknown keyword
4095 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
4096 * A beta-quality port to the mips architecture running Linux,
4097 based on the old CMUCL backend, has been made. It has been tested
4098 on a big-endian kernel, and works sufficiently well to be able to
4099 rebuild itself; it has not been tested in little-endian mode.
4100 * fixed an inconsistency between gencgc.c and purify.c which made
4101 dumping/loading .core files unreliable
4102 * fixed bug 120a: The compiler now deals correctly with IFs where
4103 the consequent is the same as the alternative, instead of
4104 misderiving the return type. (thanks to Alexey Dejneka)
4105 * fixed bug 113: Logical pathnames are now dumpable (the logical
4106 host is resolved at load-time, throwing an error if it is not
4108 * fixed bug 174: FORMAT's error message is slightly clearer when a
4109 non-printing character is used in a format directive.
4110 * fixed several bugs in compiler checking of type declarations, i.e.
4111 violations of the Python "declarations are assertions" principle
4112 (thanks to Alexey Dejneka)
4113 * fixed several bugs in PCL's error checking (thanks to Gerd
4115 * fixed bug: printing of FILE-ERROR (thanks to Antonio
4117 * fixed bug in compilation of functions as first class values
4118 (thanks to Antonio Martinez-Shotton)
4119 * The compiler's handling TYPE-ERRORs which it can prove will
4120 inevitably happen at runtime has been cleaned up and corrected
4121 in several ways. (thanks to Alexey Dejneka)
4122 * improved argument type checking for various basic arithmetic
4123 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
4124 lavished on them in the past that they can be compiled in many
4125 ways in different special cases
4126 * fixed bug 181: compiler checks validity of user supplied type
4128 * cleaned up code flushing in optimization: Function calls which
4129 should signal errors for safety purposes (e.g. which ANSI says
4130 should signal errors when their arguments are of incorrect type)
4131 are no longer optimized away.
4132 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
4133 * incremented fasl file version number, because changes in the
4134 implementation of sequence functions like COERCE caused
4135 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
4136 in old inline expansions) to become undefined. (Actually these
4137 changes were later undone, so we might very well be binary
4138 compatible with 0.7.7 after all, but leaving the version number
4139 incremented seemed like the simplest and most conservative
4142 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
4143 * An alpha-quality port to the parisc architecture running Linux,
4144 based on the old CMUCL backend, has been made. This, even more so
4145 than the other backends, should be considered still a work in
4146 progress; known problems include that the Linux kernel in 64-bit
4147 mode does not propagate the correct sigcontext structure to
4148 userspace, and consequently SBCL on a parisc64 kernel will not
4150 * fixed bug 189: The compiler now respects NOTINLINE declarations for
4151 functions declared in FLET and LABELS. (I.e. "LET conversion" is
4152 suppressed.) Also now that the compiler is looking at declarations
4153 in the environment, it checks optimization declarations as well,
4154 and suppresses inlining when (> DEBUG SPEED).
4155 * More fixes have been made to treatment of floating point exception
4156 treatment and other Unix signals. In particular, floating point
4157 exceptions no longer cause Bus errors on the SPARC/Linux platform.
4158 * The detection and handling of control stack exhaustion (infinite
4159 or very deeply nested recursion) has changed. Stack exhaustion
4160 detection is now done by write-protecting pages at the OS level
4161 and applies at all optimization settings; when found, a
4162 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
4163 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
4164 be caught using IGNORE-ERRORS.
4165 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
4166 correctly when transforming recursive LABELS functions to LETs.
4167 (thanks to Alexey Dejneka)
4168 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
4169 that are names of constants or global variables.
4170 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
4171 alien routines with docstrings.
4172 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
4173 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
4175 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
4176 (thanks to Eric Marsden)
4177 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
4178 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
4179 * Bug fix: The SPARC backend can now compile functions involving
4180 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
4181 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
4182 to a functions expecting a PATHNAME-DESIGNATOR.
4183 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
4184 lambda lists. (thanks to Alexey Dejneka)
4185 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
4186 functions so that EXPORTing the name of the class doesn't cause
4187 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
4188 to Antonio Martinez for reporting this)
4189 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
4190 constant-folded without failing an assertion. (thanks to Einar
4191 Floystad Dorum for reporting this)
4192 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
4193 types are now dealt with more correctly by the compiler.
4194 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
4195 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
4196 behaviour analogous to RENAME-FILE. This puts its behaviour more
4197 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
4199 * The fasl file version number has changed again. (because of the
4200 bug fix involving the names of PCL MAKE-INSTANCE functions)
4202 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
4203 * bug fix: Floating point exceptions are treated much more
4204 consistently on the x86/Linux and PPC/Linux platforms.
4205 * Array initialization with :INITIAL-ELEMENT is now much faster for
4206 cases when the compiler cannot open code the array creation, but
4207 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
4208 array accesses have also seen a speed increase.
4209 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
4210 specified. (This was at the root of some bad interactions between
4211 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
4213 * bug fix: Internal error arguments for undefined functions are now
4214 computed correctly on the PPC/Linux platform.
4215 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
4216 Raymond Toy's patch for CMU CL)
4217 * Support for the Solaris 9 operating environment has been included
4218 (thanks to Daniel Merritt)
4219 * A very ugly but hopefully complete draft of the missing FFI chapter
4220 of the manual has been created by reformatting the corresponding
4221 CMU CL manual chapter into (currently very ugly and incoherent)
4222 DocBook and bringing it up to date for SBCL behavior. Thus, the
4223 manual is now essentially complete, at least by my extreme
4224 once-and-only-once standards, whereby it's acceptable to refer to
4225 the doc strings of SB-EXT functions as the primary documentation.
4226 * The fasl file version number has changed again, due to cleanup of
4227 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
4228 is no longer a static symbol.)
4230 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
4231 * SBCL now builds with OpenMCL (version 0.12) as the
4232 cross-compilation host; also, more progress has been made toward
4233 bootstrapping under CLISP.
4234 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
4236 * bug 158 fixed: The compiler can now deal with integer loop
4237 increments different from 1; fixing this turned out also to fix
4239 * bug 169 fixed: no more bogus warnings about using lexical bindings
4240 despite the presence of perfectly good SPECIAL declarations (thanks
4241 to David Lichteblau)
4242 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
4243 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
4244 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
4246 * bug 180 fixed: Method combination specifications no longer ignore
4247 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
4248 * bug fix: Structure type predicate functions now check their argument
4249 count as they should.
4250 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
4251 correctly. (thanks to Pierre Mai)
4252 * minor incompatible change: The --noprogrammer option is deprecated
4253 in favor of the new --disable-debugger option, which is very similar.
4254 (The major difference is that it takes effect at a slightly different
4255 time at startup, causing handling of errors in --sysinit and
4256 --userinit files will be affected differently.) The
4257 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
4258 been added to allow this functionality to be controlled from ordinary
4259 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
4260 maintainers, who might want to run non-interactive scripts to
4261 build SBCL cores which will later be used interactively.)
4262 * minor incompatible change: The LOAD function no longer, when given
4263 a wild pathname to load, loads all files matching that pathname.
4264 Instead, an error of type FILE-ERROR is signalled.
4266 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
4267 * bug 147 fixed: The compiler preserves its block link/count
4268 invariants more correctly now so that it doesn't crash. (thanks
4270 * Dynamic loading of object files in OpenBSD is now supported. (thanks
4272 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
4273 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
4274 no-value-for-this-character as NIL (as specified by ANSI).
4275 * HOST-NAMESTRING on physical pathnames now returns a string that is
4276 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
4277 (thanks to Christophe Rhodes)
4278 * The Alpha port handles icache flushing more correctly. (thanks to
4280 * More progress has been made toward bootstrapping under CLISP. (thanks
4281 to Christophe Rhodes)
4282 * The fasl file format has changed again, because dynamic loading
4283 on OpenBSD (which has non-ELF object files) motivated some cleanups
4284 in the way that foreign symbols are transformed and passed around.
4285 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
4286 is no longer treated as whitespace by the reader, but instead as
4287 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
4288 |A
\7fB|, instead of A as it used to.
4290 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
4291 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
4292 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
4293 * SBCL now runs on the PPC archtiecture under Linux. It actually did
4294 this as of 0.7.1.45, but was left out of the previous news section
4295 (thanks to Dan Barlow)
4296 * SBCL now runs on the Solaris operating system on SPARC architectures
4297 (thanks to Christophe Rhodes's port of the CMUCL runtime)
4298 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
4299 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
4300 * SPARC backend cleanups, allowing builds of cores optimized for V8
4301 and V9 SPARCS, and also emission of code targeted to a particular
4302 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
4304 * SBCL is closer to bootstrapping under CLISP, thanks to various
4305 fixes by Christophe Rhodes.
4306 * The fasl file format has changed again, to allow the compiler's
4307 INFO database to support symbol macros.
4308 * The user manual (in doc/) is formatted into HTML more nicely.
4309 (thanks to coreythomas)
4310 * The system is smarter about SUBTYPEP relationships, especially
4311 those involving NOT types (including types such as ATOM which are
4312 represented internally using NOT types). Thus SUBTYPEP is less
4313 likely to return (VALUES NIL NIL) in general, and in particular
4314 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
4316 * The fasl file format has changed again, because the internal
4317 representation of types now includes a new slot to support the new
4318 SUBTYPEP-of-NOT-types logic.
4319 * (not a change in the main branch of SBCL, but a related prototype
4320 which can hopefully be merged into the main branch of SBCL in the
4321 future:) Brian Spilsbury has produced a Unicode-enabled variant of
4322 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
4323 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
4324 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
4325 dispatch macro character combinations. (thanks to Alexey Dejneka)
4326 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
4327 that superficially look like logical namestrings correctly.
4328 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
4330 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
4331 default supplied-p) for &optional and &key arguments. (thanks to
4334 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
4335 * incompatible change: The compiler is now less aggressive about
4336 tail call optimization, doing it only when (> SPACE DEBUG) or
4337 (> SPEED DEBUG). (This is an incompatible change because there are
4338 programs which relied on the old CMU-CL-style behavior to optimize
4339 away their unbounded recursion which will now die of stack overflow.)
4340 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
4341 for non-GENCGC systems has been increased to 20M (since that
4342 seems much closer to the likely performance optimum for modern
4343 systems than the old 4M value was)
4344 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
4345 and *DEBUG-PRINT-LEVEL*
4346 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
4347 of CMU CL's support for SPARC, and various endianness and other
4348 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
4349 * new syntactic sugar for the Unix command line: --load foo.bar is now
4350 an alternate notation for --eval '(load "foo.bar")'.
4352 ** The system now detects stack overflow and handles it gracefully,
4353 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
4354 optimization settings. (This is a good thing in general, and
4355 its introduction in this version should be particularly timely
4356 for anyone whose code fails because of suppression of tail
4358 ** The system now hunts for the C variable "environ" in a more
4359 devious way, to avoid segfaults when the C library version differs
4360 between compile time and run time. (thanks to Christophe Rhodes)
4361 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
4362 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
4363 ** The compiler no longer issues bogus style warnings for undefined
4364 classes in the same source file as the DEFCLASSes which defined
4365 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
4367 ** fixes in CONDITION class precedence list for undefined function
4368 errors (thanks to Alexei Dejneka)
4369 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
4370 correctly. (thanks to Dan Barlow)
4371 ** portability fixes aiming at bootstrapping under CLISP (thanks
4372 to Dave McDonald and Christophe Rhodes)
4373 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
4374 ** fixes in type translation and and type inference (thanks to
4376 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
4377 ** various fixes in the new ports (thanks to Dan Barlow)
4378 * several changes related to debugging:
4379 ** suppression of tail recursion, as noted above
4380 ** stack overflow detection, as noted above
4381 ** The default implementation of TRACE has changed. :ENCAPSULATE T
4382 is now the default. (For some time encapsulation has been more
4383 reliable than the breakpoint-based :ENCAPSULATE NIL
4384 implementation, at least on X86 systems; and I just noticed that
4385 encapsulation also seems closer to the spirit of the ANSI
4388 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
4390 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
4391 up properly again. (There was a packaging bug in 0.7.0 which
4392 left their definitions in SB-SYS::LOAD-FOREIGN and
4393 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
4394 vital for most things which interface to C-level interfaces,
4395 like extensions working with sockets or databases or
4396 Perl-compatible regexes or whatever, and the need to fix
4397 this bug is the main reason that 0.7.1 was released so
4399 ** DEFGENERIC is now choosier about the methods it redefines, so that
4400 reLOADing a previously-LOADed file containing DEFGENERICs does
4401 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
4402 cycle now works as it should. (thanks to Alexey Dejneka)
4403 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
4404 fixed by Christophe Rhodes. (He actually submitted this patch
4405 months ago, and I delayed until after 0.7.0.)
4406 ** Bug 111 (internal compiler confusion about runtime checks on
4407 FUNCTION types) was fixed by Alexey Dejneka.
4408 * Some internal cleanups (getting rid of variables which aren't
4409 needed now that the byte interpreter is gone) caused the fasl
4410 file format number to change again.
4412 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
4413 * major incompatible change: The default fasl file extension, i.e. the
4414 default extension for files produced by COMPILE-FILE, has changed
4415 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
4417 ** There are many changes in the implementation of the compiler.
4418 SBCL is now essentially a compiler-only implementation of ANSI
4419 Common Lisp. EVAL still "interprets" a few special cases, but
4420 almost all the interesting cases are handled by creating
4421 a LAMBDA expression, calling COMPILE on it, then calling
4422 FUNCALL on the result.
4423 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
4424 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
4425 Since the code is newer, there might still be some new bugs
4426 (though not as many as before Martin Atzmueller's fixes:-). But
4427 the new code is substantially simpler and clearer, and hopefully
4428 any remaining bugs will be simpler, less fundamental, and more
4429 fixable then the bugs in the old code.
4430 ** The revised compiler is still a little unsteady on its feet.
4432 *** The debugging information it produces (particularly the names
4433 of FUNCTION objects) is sometimes much less useful than what
4434 the old compiler produced.
4435 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
4436 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
4437 within a MACROLET) has been temporarily weakened.
4438 ** There are new compiler optimizations for various functions:
4439 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
4440 FIND-IF-NOT, POSITION-IF-NOT, and FILL
4441 *** the math functions TRUNCATE, FLOOR, and CEILING
4442 *** the function-of-all-trades COERCE
4443 Mostly these should be transparent, but there's one
4444 potentially-annoying problem (bug 117): when the compiler
4445 inline-expands a function and does type analysis on the result,
4446 it can create control paths which have type mismatches, and
4447 when it can't prove that those control paths aren't taken,
4448 it will issue WARNINGs about the type mismatches. This is
4449 a particular problem in practice for the new sequence functions.
4450 It's not clear how this should be fixed, and for now, a
4451 workaround is given in the entry for 117 in the BUGS file.
4452 ** (Because of the interaction between the two previous items --
4453 occasional inlining problems and new inline expansions -- some
4454 of the new sequence function optimizations won't really kick in
4455 completely until debugging information, and then inlining, are
4456 straightened out in some future version.)
4457 * minor incompatible changes:
4458 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
4459 DIRECTORY no longer implicitly promotes NIL slots of its
4460 pathname argument to :WILD. In particular, when you ask for the
4461 contents of a directory (which you used to be able to do without
4462 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
4463 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
4464 ** changes in behavior that ANSI explicitly defines to be
4465 implementation dependent:
4466 *** The new compiler-only implementation still conforms with ANSI,
4467 but acts a little different than before. Besides the obvious
4468 changes in performance tradeoffs (that the cost per form passed
4469 to EVAL has gone up, and the cost per form executed by EVAL
4470 has gone down), the behavior of the system changes a little
4471 because there are no longer any interpreted function objects.
4472 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
4473 e.g. doing COMPILE on the output of interactive DEFUN is
4475 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
4477 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
4478 has changed from (:CL) to NIL.
4479 *** The CHAR-NAME of unprintable ASCII characters which, unlike
4480 e.g. #\Newline and #\Tab, don't have names specified in the
4481 ANSI Common Lisp standard, is now based on their ASCII symbolic
4482 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
4483 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
4484 are no longer used for output.
4485 ** changes in internal implementation constants:
4486 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
4487 4 million. (If your application spends a lot of time GCing and
4488 you have a lot of RAM, you might want to experiment with
4489 increasing it even more.)
4490 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
4491 However, almost all old code should still continue to work without
4492 immediate update, as SB-C-CALL is now a (deprecated) nickname
4494 ** Old operator names in the style DEF-FOO are now deprecated in
4495 favor of new corresponding names DEFINE-FOO, for consistency with
4496 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
4497 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
4498 internal symbols, but a few supported extensions like
4499 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
4500 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
4501 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
4502 etc. as you get deeper into recursive calls to the debugger
4503 command loop, instead of the old "5]", "5]]", "5]]]"
4504 sequence. (I was motivated to do this when squabbles between
4505 ILISP and SBCL left me very deeply nested in the debugger. In the
4506 short term, this change will probably provoke more ILISP/SBCL
4507 squabbles, but hopefully it will be an improvement in the long run.)
4508 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
4509 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
4510 function, since declaiming return types involving aliens is
4511 (1) annoyingly messy to do by hand and (2) vital to efficient
4512 compilation of code which calls such functions.
4513 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
4514 longer reexported by the SB-EXT package. They're solely useful
4515 for alien code, so it seems more logical that you should get
4516 them from the SB-ALIEN package, not in SB-EXT.
4517 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
4518 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
4519 features. Instead, the code that they used to control is always
4520 built into the system.
4521 * many other bug fixes
4522 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
4523 advantage of the new EVAL-WHEN stuff and to clean them up in
4524 general, and they are now more ANSI-compliant in a number of
4525 ways. Martin Atzmueller is responsible for a lot of this.
4526 ** Besides the cleanups discussed above, Martin Atzmueller fixed
4528 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
4529 *** correct ERROR type for various file operations
4530 *** some fixes for Lisp streams
4531 *** DEFMETHOD syntax checking
4532 *** changing old weird representation of debug information as
4533 strings (which, among their other deficiencies, don't transform
4534 correctly when you rename packages, and don't change their
4535 print representation when you change things like *PACKAGE*
4536 and *PRINT-LENGTH*) to symbols and lists of symbols
4537 He also made several improvements and fixed several bugs in DESCRIBE.
4538 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
4540 *** misbehavior of WRITE-STRING/WRITE-LINE
4541 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
4542 and several other LOOP problems as well
4543 *** DIRECTORY when similar filenames are present
4544 *** DEFGENERIC with :METHOD options
4545 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
4546 *** bug in the optimization of ARRAY-ELEMENT-TYPE
4547 *** argument ordering in FIND with :TEST option
4548 *** mishandled package designator argument in APROPOS-LIST
4549 *** various problems in the backquote readmacro
4550 *** a bug in APROPOS
4551 *** probably some others that I'm not describing very well here,
4552 since the CVS log documents them by reference to sbcl-devel
4553 messages, and the SourceForge archives aren't working well.:-(
4554 ** Dan Barlow improved the Alpha port (and is making progress on the
4555 PPC port, for those of you who think different).
4556 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
4557 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
4558 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
4559 continues to work on the SPARC port (for those of you in a position
4560 to look down upon our little PC-compatible boxes from a great height).
4561 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
4562 and uses that copy, rather than the current dynamic value, when
4563 it's trying to decide whether to truncate output. Thus e.g.
4564 (let ((*print-lines* 50))
4565 (pprint-logical-block (stream nil)
4567 (let ((*print-lines* 8))
4568 (print (aref possiblybigthings i) stream)))))
4569 should now truncate the logical block only at 50 lines, instead of
4570 often truncating it at 8 lines, as it did before.
4571 * The doc/cmucl/ directory, containing old CMU CL documentation
4572 from the time of the fork, is no longer part of the base system.
4573 SourceForge has shut down its anonymous FTP service, and with it
4574 my original plan for distributing the old CMU CL documentation
4575 there. For now, if you need these files you can download an old
4576 SBCL source release and extract them from it.
4577 * The fasl file version number changed again, for dozens of reasons,
4578 some of which are apparent above.
4580 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
4581 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
4582 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
4583 patch, so that DISASSEMBLE output is much nicer.
4584 * The code in the SB-PROFILE package now seems reasonably stable.
4585 I still haven't decided what the final interface should look like
4586 (I'd like PROFILE to interact cleanly with TRACE, since both
4587 facilities use function encapsulation) but if you have a need
4588 for profiling now, you can probably use it successfully with
4589 the current CMU-CL-style interface.
4590 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
4591 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
4592 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
4593 link now returns the dangling link itself, and for similar
4594 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
4595 link itself. (In these cases the old code signalled an error and
4596 looped endlessly, respectively.) Thus, DIRECTORY now works even
4597 in the presence of dangling and cyclic symbolic links.
4598 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
4599 is now a supported extension again, since the consensus on
4600 sbcl-devel was that it can be useful for ordinary development
4601 work, not just for debugging SBCL itself.
4602 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
4603 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
4604 that currently-defined functions might be redefined later with
4605 different return types.
4606 * Hash tables can be printed readably, as inspired by CMU CL code
4607 of Eric Marsden and SBCL code of Martin Atzmueller.
4608 * better error handling in CLOS method combination, thanks to
4609 Martin Atzmueller porting Pierre Mai's CMU CL patches
4610 * more overflow fixes for >16Mbyte I/O buffers
4611 * A bug in READ has been fixed, so that now a single Ctrl-D
4612 character suffices to cause end-of-file on character streams.
4613 In particular, now you only need one Ctrl-D at the command
4614 line (not two) to exit SBCL.
4615 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
4617 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
4618 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
4619 does the right thing.
4620 * The implementation of some type tests, especially for CONDITION
4621 types, is now tidier and maybe faster, due to CMU CL code
4622 originally by Douglas Crosher, ported by Martin Atzmueller.
4623 * Some math functions have been fixed, and there are new
4624 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
4625 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
4626 * (There are also some new optimizers in contrib/*-extras.lisp. Those
4627 aren't built into sbcl-0.6.13, but are a sneak preview of what's
4628 likely to be built into sbcl-0.7.0.)
4629 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
4630 CL, ported to SBCL by Martin Atzmueller)
4631 * DESCRIBE now gives more information in some cases. (Pierre Mai's
4632 patch to CMU CL, ported to SBCL by Martin Atzmueller)
4633 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
4634 * There's a new slam.sh hack to shorten the edit/compile/debug
4635 cycle for low-level changes to SBCL itself, and a new
4636 :SB-AFTER-XC-CORE target feature to control the generation of
4637 the after-xc.core file needed by slam.sh.
4638 * minor incompatible change: The ENTRY-POINTS &KEY argument to
4639 COMPILE-FILE is no longer supported, so that now every function
4640 gets an entry point, so that block compilation looks a little
4641 more like the plain vanilla ANSI section 3.2.2.3 scheme.
4642 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
4643 returns the number of bytes consed since the system started,
4644 rather than the number consed since the first time the function
4645 was called. (The new definition parallels ANSI functions like
4646 CL:GET-INTERNAL-RUN-TIME.)
4647 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
4648 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
4649 supported. Now DIRECTORY always does the abstract Common-Lisp-y
4650 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
4651 * Fasl file version numbers are now independent of the target CPU,
4652 since historically most system changes which required version
4653 number changes have affected all CPUs equally. Similarly,
4654 the byte fasl file version is now equal to the ordinary
4657 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
4658 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
4659 is no longer recognized. I apologize for this, because it was
4660 listed in SB-EXT as a supported extension, but I found that
4661 its existing behavior was poorly specified, as well as incorrectly
4662 specified, and it looked like too much of a mess to straighten it
4663 out. I have enough on my hands trying to get ANSI stuff to work..
4664 * many patches ported from CMU CL by Martin Atzmueller, with
4665 half a dozen bug fixes in pretty-printing and the debugger, and
4666 half a dozen others elsewhere
4667 * fixed bug 13: Floating point infinities are now supported again.
4668 They might still be a little bit flaky, but thanks to bug reports
4669 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
4670 as flaky as they were.
4671 * The --noprogrammer command line option is now supported. (Its
4672 behavior is slightly different in detail from what the old man
4673 page claimed it would do, but it's still appropriate under the
4674 same circumstances that the man page talks about.)
4675 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
4676 are now supported, and enabled by default. Thus, the compiler can
4677 handle many floating point and complex operations much less
4678 inefficiently. (Thus e.g. you can implement a complex FFT
4680 * The compiler now detects type mismatches between DECLAIM FTYPE
4681 and DEFUN better, and implements CHECK-TYPE more correctly, and
4682 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
4683 thanks to patches from Martin Atzmueller.
4684 * various fixes to make the cross-compiler more portable to
4685 ANSI-conforming-but-different cross-compilation hosts (notably
4686 Lispworks for Windows, following bug reports from Arthur Lemmens)
4687 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
4688 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
4689 fixed thanks to Pierre Mai's CMU CL patches.
4690 * fixes to keep the system from overflowing internal counters when
4691 it tries to use i/o buffers larger than 16M bytes
4692 * fixed bug 45a: Various internal functions required to support
4693 complex special functions have been merged from CMU CL sources.
4694 (When I was first setting up SBCL, I misunderstood a compile-time
4695 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
4696 * improved support for type intersection and union, fixing bug 12
4697 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
4698 more obscure bugs as well
4699 * some steps toward byte-compiling non-performance-critical
4700 parts of the system, courtesy of patches from Martin Atzmueller
4701 * Christophe Rhodes has made some debian packages of sbcl at
4702 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
4703 From his sbcl-devel e-mail of 2001-04-08 they're not completely
4704 stable, but are nonetheless usable. When he's ready, I'd be happy
4705 to add them to the SourceForge "File Releases" section. (And if
4706 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
4707 * new fasl file format version number (because of changes in
4708 internal representation of (OR ..) types to accommodate the new
4709 support for (AND ..) types, among other things)
4711 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
4712 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
4714 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
4716 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
4717 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
4718 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
4719 * DESCRIBE now works on structure objects again.
4720 * Most function call argument type mismatches are now handled as
4721 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
4722 know whether the function will be redefined before the call is
4723 executed. (The compiler could flag local calls with full WARNINGs,
4724 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
4725 it doesn't keep track of enough information to know whether calls
4726 are local in this sense.)
4727 * Compiler output is now more verbose, with messages truncated
4728 later than before. (There should be some supported way for users
4729 to override the default verbosity, but I haven't decided how to
4730 provide it yet, so this behavior is still controlled by the internal
4731 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
4732 src/compiler/ir1util.lisp.)
4733 * Fasl file format version numbers have increased again, because
4734 support for the Gray streams extension changes the layout of the
4735 system's STREAM objects.
4736 * The Gray subclassable streams extension now works, thanks to a
4737 patch from Martin Atzmueller.
4738 * The full LOAD-FOREIGN extension (not just the primitive
4739 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
4740 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
4741 but like most other programs, it defaults to copying the Unix
4742 environment from the original process instead of starting the
4743 new process in an empty environment.
4744 * Extensions which manipulate the Unix environment now support
4745 an :ENVIRONMENT keyword option which doesn't smash case or
4746 do other bad things. The CMU-CL-style :ENV option is retained
4747 for porting convenience.
4748 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
4749 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
4751 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
4753 * A patch from Martin Atzmueller seems to have solved the SIGINT
4754 problem, and as far as we know, signal-handling now works cleanly.
4755 (If you find any new bugs, please report them!)
4756 * The system no longer defaults Lisp source file names to types
4757 ".l", ".cl", or ".lsp", but only to ".lisp".
4758 * The compiler no longer uses special default file extensions for
4759 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
4760 seems to expect a single default extension for all compiled code,
4761 and there's no compelling reason to try to stretch the standard
4762 to allow two different extensions.) Instead, byte-compiled files
4763 default to the same extension as native-compiled files.
4764 * Fasl file format version numbers have increased again, because
4765 a rearrangement of internal implementation packages made some
4766 dumped symbols in old fasl files unreadable in new cores.
4767 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
4768 many fewer weird special cases.
4769 * Bug #17 (differing COMPILE-FILE behavior between logical and
4770 physical pathnames) has been fixed, and some related misbehavior too,
4771 thanks to a patch from Martin Atzmueller.
4772 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
4773 by Tim Moore, ported to SBCL by Martin Atzmueller.
4774 * Martin Atzmueller fixed several filesystem-related problems,
4775 including bug #36, in part by porting CMU CL patches, which were
4776 written in part by Paul Werkowski.
4777 * More compiler warnings in src/runtime/ are gone, thanks to
4778 more patches from Martin Atzmueller.
4779 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
4782 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
4784 * DESCRIBE now works on CONDITION objects.
4785 * The debugger now handles errors which arise when trying to print
4786 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
4788 * The build system now uses an additional file, customize-target-features.lisp,
4789 to allow local modifications to the target *FEATURES* list. (The point of
4790 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
4791 debugging features enabled, without having to worry about propagating it
4792 into everyone's system when I do a "cvs update".) When no
4793 customize-target-features.lisp file exists, the target *FEATURES* list
4794 should be constructed the same way as before.
4795 * fixed bugs in DEFCONSTANT ANSI-compatibility:
4796 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
4797 warn about behavior which is undefined under the ANSI spec. Note: This
4798 is specified by ANSI, but it's not very popular with programmers.
4799 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
4800 macro in the SBCL sources for an example of a workaround which you
4801 might use to make portable ANSI-standard code which does what you want.
4802 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
4803 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
4804 when it's used as a non-toplevel form. (This is required in order
4805 to implement the DEFCONSTANT-EQX macro.)
4806 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
4807 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
4808 funny things, due to bugs in the implementation of EVAL-WHEN
4809 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
4810 non-toplevel DEFCONSTANTs are uncommon.)
4811 * The core file version number and fasl file version number have been
4812 incremented, because the old noncompliant DEFCONSTANT behavior involved
4813 calling functions which no longer exist, and because I also took the
4814 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
4815 * fixed bug 1 (error handling before read-eval-print loop starts), and
4816 redid debugger restarts and related debugger commands somewhat while
4818 ** The QUIT debugger command is gone, since it did something
4819 rather different than the SB-EXT:QUIT command, and since it never
4820 worked properly outside the main toplevel read/eval/print loop.
4821 Invoking the new TOPLEVEL restart provides the same functionality.
4822 ** The GO debugger command is also gone, since you can just invoke
4823 the CONTINUE restart directly instead.
4824 ** The TOP debugger command is also gone, since it's redundant with the
4825 FRAME 0 command, and since it interfered with abbreviations for the
4827 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
4829 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
4830 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
4831 some porting work by Martin Atzmueller)
4832 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
4833 with a boatload of patches which he ported to SBCL. Now that those
4835 ** The system tries to make sure that its low-priority messages
4836 are prefixed by semicolons, to help people who like to use
4837 syntax highlighting in their ILISP buffer. (This patch
4838 was originally due to Raymond Toy.)
4839 ** The system now optimizes INTEGER-LENGTH better, thanks to more
4840 patches originally written by Raymond Toy.
4841 ** The compiler understands coercion between single-value and
4842 multiple-VALUES type expressions better, getting rid of some very
4843 weird behavior, thanks to patches originally by Robert MacLachlan
4844 and Douglas Crosher.
4845 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
4846 lambda lists, thanks to a patch originally by Pierre Mai.
4847 ** The system no longer bogusly warns about "abbreviated type
4849 ** The compiler gets less confused by inlining and RETURN-FROM,
4850 thanks to some patches originally by Tim Moore.
4851 ** The system no longer hangs when dumping circular lists to fasl
4852 files, thanks to a patch originally from Douglas Crosher.
4853 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
4854 undefined function error.
4855 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
4856 in structure slot initforms) for now, documented workaround instead:-|
4857 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
4858 * fixed bug 5: added stubs for various Gray stream functions called
4859 in the not-a-CL:STREAM case, so that even when Gray streams aren't
4860 installed, at least appropriate type errors are generated
4861 * fixed bug 8: better reporting of various PROGRAM-ERRORs
4862 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
4863 consistently in DEFMETHOD forms.
4864 * removed bug 21 from BUGS, since Martin Atzmueller points out that
4865 it doesn't seem to affect SBCL after all
4866 * The C runtime system now builds with better optimization and many
4867 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
4869 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
4871 * The system is now under CVS at SourceForge (instead of the
4872 CVS repository on my home machine).
4873 * The new signal handling code has been tweaked to treat register
4874 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
4875 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
4876 downstream, e.g. in debug-int.lisp, has implicit dependencies
4877 on the unsignedness of integer representation of machine words,
4878 and that caused the system to bomb out with infinite regress
4879 when trying to recover from type errors involving signed values,
4880 e.g. (BUTLAST '(1 2 3) -1).)
4881 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
4882 (This was one of the bugs Peter Van Eynde reported back in July.)
4883 * The system now uses code inspired by Colin Walters' O(N)
4884 implementation of MAP (from the cmucl-imp@cons.org mailing
4885 list, 2 September 2000) when it can't use a DEFTRANSFORM to
4886 inline the MAP operation, and there is more than one
4887 sequence argument to the MAP call (so that it can't just
4888 do ETYPECASE once and for all based on the type of the
4889 single sequence argument). (The old non-inline implementation
4890 of the general M-argument sequence-of-length-N case required
4891 O(M*N*N) time when any of the sequence arguments were LISTs.)
4892 * The QUIT :UNIX-CODE keyword argument has been renamed to
4893 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
4894 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
4896 * Raymond Wiker's patches to port dynamic loading from Linux to
4897 FreeBSD have been added.
4898 * The BUGS file is now more nearly up to date, thanks in large part
4899 to Martin Atzmueller's review of it.
4900 * The debugger now flushes standard output streams before it begins
4901 its output ("debugger invoked" and so forth).
4902 * The core version number and fasl file version number have both
4903 been incremented, because of incompatible changes in the layout
4905 * FINISH-OUTPUT is now called more consistently on QUIT. (It
4906 used to not be called for a saved Lisp image.)
4907 * Martin Atzmueller's version of a patch to fix a compiler crash,
4908 as posted on sbcl-devel 13 September 2000, has been installed.
4909 * Instead of installing Martin Atzmueller's patch for the
4910 compiler transform for SUBSEQ, I deleted the compiler transform,
4911 and transforms for some similar consing operations.
4912 * A bug in signal handling which kept TRACE from working on OpenBSD
4914 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
4915 away by constant folding
4916 * The system now defines its address space constants in one place
4917 (in the Lisp sources), and propagates them automatically elsewhere
4918 (through GENESIS and the sbcl.h file). Therefore, patching the
4919 address map is less unnecessarily tedious and error-prone. The
4920 Lisp names of address space constants have also been systematized.
4921 * CVS tags like dollar-Header-dollar have been removed from
4922 the sources, because they have never saved me trouble and
4923 they've been source of trouble working with patches and other
4924 diff-related operations.
4925 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
4926 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
4928 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
4930 * The system has been ported to OpenBSD.
4931 * The system now compiles with a simple "sh make.sh" on the systems
4932 that it's supported on. I.e., now you no longer need to tweak
4933 text in the target-features.lisp-expr and symlinks in src/runtime/
4934 by hand, the make.sh takes care of it for you.
4935 * The system is no longer so grossly inefficient when compiling code
4936 involving vectors implemented as general (not simple) vectors (VECTOR T),
4937 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
4938 which dares to use the various sequence functions on non-simple
4939 vectors, takes less of a performance hit.
4940 * There is now a primitive type predicate VECTOR-T-P
4941 to test for the (VECTOR T) type, so that e.g.
4942 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
4943 can now be compiled with some semblance of efficiency. (The old code
4944 turned the type declaration into a full call to %TYPEP at runtime!)
4945 * AREF on (VECTOR T) is still not fast, since it's still compiled
4946 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
4947 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
4948 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
4949 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
4950 without making full calls to SUBTYPEP at runtime.
4951 (Some analogous efficiency issues for non-simple vectors specialized to
4952 element types other than T, or for non-simple multidimensional arrays,
4953 have not been addressed. They could almost certainly be handled the
4954 same way if anyone is motivated to do so.)
4955 * The changes in array handling break binary compatibility, so
4956 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
4957 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
4958 instead of (VALUES T T).
4959 * By following the instructions that Dan Barlow posted to sbcl-devel
4960 on 2 July 2000, I was able to enable primitive dynamic object
4961 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
4962 functionality is not implemented (since it calls ld to resolve
4963 library references automatically, requiring RUN-PROGRAM for its
4964 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
4965 try to resolve library references) is now supported.
4966 * The system now flushes the standard output streams when it terminates,
4967 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
4968 them at several other probably-convenient times, e.g. in each pass of
4969 the toplevel read-eval-print loop, and after evaluating a form given
4970 as an "--eval" command-line option. (These changes were motivated by a
4971 discussion of stream flushing issues on cmucl-imp in August 2000.)
4972 * The source transform for TYPEP of array types no longer assumes
4973 that an array whose element type is a not-yet-defined type
4974 is implemented as an array of T, but instead punts, so that the
4975 type will be interpreted at runtime.
4976 * There is now some support for cross-compiling in make.sh: each of
4977 the phases of make.sh has its own script. (This should be transparent
4978 to people doing ordinary, non-cross-compile builds.)
4979 * Since my laptop doesn't have hundreds of megabytes of memory like
4980 my desktop machine, I became more motivated to do some items on
4981 my to-do list in order to reduce the size of the system a little:
4982 ** Arrange for various needed-only-at-cold-init things to be
4983 uninterned after cold init. To support this, those things have
4984 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
4985 symbols with such names are now uninterned after cold init).
4986 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
4987 fasl files for cold load.
4988 ** Remove the old compiler structure pooling code (which used to
4989 be conditional on the target feature :SB-ALLOC) completely.
4990 ** Redo the representation of some data in cold init to be more compact.
4991 (I also looked into supporting byte compiled code at bootstrap time,
4992 which would probably reduce the size of the system a lot, but that
4993 looked too complicated, so I punted for now.)
4994 * The maximum signal nesting depth in the src/runtime/ support code has
4995 been reduced from 4096 to 256. (I don't know any reason for the very
4996 large old value. If the new smaller value turns out to break something,
4997 I'll probably just bump it back up.)
4998 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
5000 * Many, many bugs reported by Peter Van Eynde have been added to
5001 the BUGS list; some have even been fixed.
5002 * While enabling dynamic object file loading, I tried to make the
5003 code easier to understand, renaming various functions and variables
5004 with less ambiguous names, and changing some function calling
5005 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
5006 * While trying to figure out how to do the OpenBSD port, I tried to
5007 clean up some of the code in src/runtime/. In particular, I dropped
5008 support for non-POSIX signal handling, added various comments,
5009 tweaked the code to reduce the number of compilation warnings, and
5010 renamed some files to increase consistency.
5011 * To support the new automatic configuration functionality in make.sh,
5012 the source file target-features.lisp-expr has been replaced with the
5013 source file base-target-features.lisp-expr and the machine-generated
5014 file local-target-features.lisp-expr.
5015 * fixed a stupid quoting error in make.sh so that using CMU CL
5016 "lisp -batch" as cross-compilation host works again
5018 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
5020 * DESCRIBE no longer tries to call itself recursively to describe
5021 bound/fbound values, so that it no longer fails on symbols which are
5022 bound to themselves (like keywords, T, and NIL).
5023 * DESCRIBE now works on generic functions.
5024 * The printer now prints less-screwed-up representations of closures
5025 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
5026 * A private symbol is used instead of the :EMPTY keyword previously
5027 used to mark empty slots in hash tables. Thus
5028 (DEFVAR *HT* (MAKE-HASH-TABLE))
5029 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
5030 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
5031 now does what ANSI says that it should. (You can still get
5032 similar noncompliant behavior if bang on the hash table
5033 implementation with all the symbols you get back from
5034 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
5035 This breaks binary compatibility, since tests for equality to
5036 :EMPTY are wired into things like the macroexpansion of
5037 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
5039 * There's now a minimal placeholder implementation for CL:STEP,
5040 as required by ANSI.
5041 * An obscure bug in the interaction of the normal compiler, the byte
5042 compiler, inlining, and structure predicates has been patched
5043 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
5044 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
5046 * Missing ordinary arguments in a macro call are now detected even
5047 when the macro lambda list contains &KEY or &REST.
5048 * The debugger no longer complains about encountering the top of the
5049 stack when you type "FRAME 0" to explicitly instruct it to go to
5050 the top of the stack. And it now prints the frame you request even
5051 if it's the current frame (instead of saying "You are here.").
5052 * As specified by ANSI, the system now always prints keywords
5053 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
5055 * The default initial SIZE of HASH-TABLEs is now smaller.
5056 * Type information from CLOS class dispatch is now propagated
5057 into DEFMETHOD bodies, so that e.g.
5058 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5060 is now basically equivalent to
5061 (DEFMETHOD FOO ((X SINGLE-FLOAT))
5062 (DECLARE (TYPE SINGLE-FLOAT X))
5064 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
5065 operation, without having to do run-time type dispatch.
5066 * The macroexpansion of DEFMETHOD has been tweaked so that it has
5067 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
5068 * Since I don't seem to be making big file reorganizations very often
5069 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
5070 is overflowing my ability to conveniently back them up), I've finally
5071 checked the system into CVS. (The CVS repository is on my home system,
5072 not at SourceForge -- putting it on SourceForge might come later.)
5073 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
5074 high-level GC-NOTIFY-FOO functions send their output. (There's
5075 still very little control of where low-level verbose GC functions
5076 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
5077 less than it used to -- the GC-NOTIFY-FOO functions are now under
5078 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
5079 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
5080 in only one place in the source code, and propagates it automatically
5081 everywhere that it's needed. Thus e.g. when I bump the version from
5082 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
5083 * The C source files now include boilerplate legalese and documentation
5084 at the head of each file (just as the Lisp source files already did).
5085 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
5086 to his page will be replaced with a link to his new CLiki service.
5088 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
5090 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
5091 * The build process now looks for GNU make under the default name "gmake",
5092 instead of "make" as it used to. If GNU make is not available as "gmake"
5093 on your system, you can change this default behavior by setting the
5094 GNUMAKE environment variable.
5095 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
5096 can build without error under CMU CL.
5098 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
5100 * There is now a partial SBCL user manual (with some new text and some
5101 text cribbed from the CMU CL manual).
5102 * The beginnings of a profiler have been added (starting with the
5103 CMU CL profiler and simplifying and cleaning up). Eventually the
5104 main interface should be through the TRACE macro, but for now,
5105 it's still accessed through vaguely CMU-CL-style functions and macros
5106 exported from the package SB-PROFILE.
5107 * Some problems left over from porting CMU CL to the new
5108 cross-compilation bootstrap process have been cleaned up:
5109 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
5110 instead of SB!XC:DEFMACRO, compounded by an oversight on my
5111 part when getting rid of the compiler *BACKEND* stuff.)
5112 ** The value of *NULL-TYPE* was screwed up, because it was
5113 being initialized before the type system knew the final
5114 definition of the 'NULL type. This screwed up several key
5115 optimizations in the compiler, causing inefficiency in all sorts
5116 of places. (I found it because I wanted to understand why
5117 GET-INTERNAL-RUN-TIME was consing.)
5118 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
5119 PROCLAIM FTYPE information. Unfortunately this broke binary
5120 compatibility again, since now the forms output by DEFGENERIC
5121 to refer to functions which didn't exist in 0.6.3.
5122 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
5123 can use the new (as of 0.6.3) transform for SOME into MAP into
5125 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
5126 values to (INTEGER 0 1000000), so that the time code will no longer
5127 occasionally get blown up by Linux returning 1000000 microseconds
5128 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
5129 its output conform to the ANSI spec. (Alas, this makes its output
5130 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
5131 * A full call to MAP NIL with a single sequence argument no longer conses.
5132 * fixes to problems pointed out by Martin Atzmueller:
5133 * The manual page no longer talks about multiprocessing as though
5134 it were currently supported.
5135 * The ILISP support patches have been removed from the distribution,
5136 because as of version 5.10.1, ILISP now supports SBCL without us
5137 having to maintain patches.
5138 * added a modified version of Raymond Toy's recent CMU CL patch for
5139 EQUALP comparison of HASH-TABLE
5141 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
5143 * The system still can't cross-compile itself with
5144 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
5145 entails), but at least it can compile more of itself that way
5146 than it used to be able to, and various buglets which were uncovered
5147 by trying to cross-compile itself that way have now been fixed.
5148 * This release breaks binary compatibility again. This time
5149 at least I've incremented the FASL file format version to 2, so that the
5150 problem can be detected reliably instead of just causing weird errors.
5151 * various new style warnings:
5152 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
5153 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
5154 ** using the lexical binding of a variable named in the *FOO* style
5155 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
5156 as specified by ANSI.
5157 * *RANDOM-STATE* is no longer automatically initialized from
5158 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
5159 default behavior of the system is to repeat its behavior every time
5160 it's run. If you'd like to change this behavior, you can always
5161 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
5162 old convention there was no comparably easy way to get the system to
5163 repeat its behavior every time it was run.
5164 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
5165 FTYPE declarations has been removed, in favor of their ANSI
5166 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
5167 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
5168 the types of their sequence arguments can be determined at compile time.
5169 This is done through a new open code expansion for MAP which eliminates
5170 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
5171 argument types can be determined at compile time.
5172 * The optimizer now transforms COERCE into an identity operation when it
5173 can prove that the coerced object is already of the correct type. (This
5174 can be a win for machine generated code, including the output of other
5175 optimization transforms, such as the MAP transform above.)
5176 * Credit information has been moved from source file headers into CREDITS.
5177 * Source file headers have been made more standard.
5178 * The CASE macro now compiles without complaining even when it has
5181 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
5183 * (Note that the way that the PCL macroexpansions were rewritten
5184 to accommodate the change in DEFGENERIC below breaks binary
5185 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
5186 not run under sbcl-0.6.2. Once we get out of alpha releases,
5187 i.e. hit release 1.0.0, we'll probably try to maintain binary
5188 compatibility between maintenance releases, e.g. between sbcl-1.4.3
5189 and sbcl-1.4.4. Until then, however, it might be fairly common
5190 for maintenance releases to break binary compatibility.)
5191 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
5193 * The reporting of unhandled signals has been changed to print some
5194 explanatory text as well as the report form. (Previously only
5195 the report form was printed.)
5196 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
5197 it defines, so that the compiler no longer issues undefined function
5198 warnings for compiled-but-not-yet-loaded generic functions.
5199 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
5200 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
5201 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
5202 section of the ANSI spec are supported.
5203 * The "" nickname for the "KEYWORD" package has been removed.
5204 The reader still handles symbol tokens which begin with a package marker
5205 as keywords, but it doesn't expose its mechanism for doing so in the
5206 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
5207 * The system now issues STYLE-WARNINGs for contradictory TYPE
5208 proclamations. (Warnings for contradictory FTYPE proclamations would
5209 be nice too, but those can't be done usefully unless the type system
5210 is made smarter about FUNCTION types.)
5211 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
5212 systematized, so that "*target-*.lisp is supposed to exist only on the
5213 target and imply that there's a related file which exists on the
5214 host, and *host-*.lisp is supposed to exist only on the host and imply
5215 that there's a related file which exists on the target. This involves a
5216 lot of renaming. Hopefully the acute confusion caused by the renaming
5217 will be justified by the reduction in chronic confusion..
5218 ** runtime-type.lisp -> early-target-type.lisp
5219 ** target-type.lisp -> late-target-type.lisp
5220 ** early-host-format.lisp -> early-format.lisp
5221 ** late-host-format.lisp -> late-format.lisp
5222 ** host-error.lisp -> misc-error.lisp
5223 ** early-error.lisp -> early-target-error.lisp
5224 ** late-error.lisp -> late-target-error.lisp
5225 ** host-defboot.lisp -> early-defboot.lisp
5226 ** code/misc.lisp -> code/target-misc.lisp
5227 ** code/host-misc.lisp -> code/misc.lisp
5228 ** code/numbers.lisp -> code/target-numbers.lisp
5229 ** code/early-numbers.lisp -> numbers.lisp
5230 ** early-host-type.lisp -> early-type.lisp
5231 ** late-host-type.lisp -> late-type.lisp
5232 ** host-typep.lisp -> typep.lisp
5233 ** load.lisp -> target-load.lisp
5234 ** host-load.lisp -> load.lisp
5235 ** host-disassem.lisp -> disassem.lisp
5236 ** host-insts.lisp -> insts.lisp
5237 ** byte-comp.lisp -> target-byte-comp.lisp
5238 ** host-byte-comp.lisp -> byte-comp.lisp
5239 ** host-signal.lisp -> signal.lisp
5240 ** host-defstruct.lisp -> defstruct.lisp
5241 ** late-target-type.lisp -> deftypes-for-target.lisp
5242 Furthermore, several other previously target-only files foo.lisp (e.g.
5243 hash-table.lisp and random.lisp) have been split into a target-and-host
5244 foo.lisp file and a target-only target-foo.lisp file, with their key type
5245 definitions in the target-and-host part, so that the cross-compiler will
5246 know more about target types.
5247 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
5248 gone away. In their place are various *BACKEND-FOO* variables
5249 corresponding to the slots of the old structure.
5250 * A bug which caused the SB-COLD bootstrap-time package to be propagated
5251 into the target SBCL has been fixed.
5252 * The chill.lisp system for loading cold code into a running SBCL
5254 * Support for the CMU CL "scavenger hook" extension has been removed.
5255 (It was undocumented and unused in the CMU CL sources that SBCL was
5256 derived from, and stale in sbcl-0.6.1.)
5257 * Various errors in the cross-compiler type system were detected
5258 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
5259 (enabling various consistency checks). Many of them were fixed,
5260 but some hard problems remain, so the compiler is back to
5261 running without *TYPE-SYSTEM-INITIALIZED* for now.
5262 * As part of the cross-compiler type system cleanup, I implemented
5263 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
5264 * I have started adding UNCROSS calls throughout the type system
5265 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
5266 on cross-compiler input files will be able to go away, and various
5268 * CONSTANTP now returns true for quoted forms (as explicitly required
5271 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
5273 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
5274 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
5275 (MAKE-LIST -1). In the longer term, it ought to become true
5276 that declarations are assertions even at SAFETY 1. For now, it's not
5277 quite true even at SAFETY 3, but it's at least more nearly true..
5278 (Note that this change seems to increases the size of the system by
5279 O(5%) and to decrease the speed of the compiler by 20% or more.)
5280 * changed ALIEN printing to be much more abbreviated, as a short-term fix
5281 for the problem of printing dozens of lines of distracting information
5282 about low-level system machinery as part of the top stack frame
5283 on entry to the debugger when an undefined function was called.
5284 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
5285 is not reset to COMMON-LISP-USER.
5286 * Compilation of stuff related to dyncount.lisp has been made conditional
5287 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
5288 smaller. The various dyncount-related symbols have been moved into
5289 a new "SB-DYNCOUNT" package.
5290 * tty-inspect.lisp has been renamed to inspect.lisp.
5291 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
5292 feature has gone away. (When we eventually port to other flavors of
5293 libc and/or Unix, we'll try to make the differences between flavors
5294 invisible at the user level.)
5295 * Various other *FEATURES* tags, and/or their associated conditionals,
5296 have been removed if obsolescent, or given better documentation, or
5297 sometimes given more-mnemonic names.
5299 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
5301 * tidied up "make.sh" script
5302 * tidied up system directory structure
5303 * better "clean.sh" behavior
5304 * added doc/FOR-CMUCL-DEVELOPERS
5305 * many many small tweaks to output format, e.g. removing possibly-confusing
5306 trailing #\. character in DESCRIBE-INSTANCE
5307 * (EQUALP #\A 'A) no longer signals an error.
5308 * new hashing code, including EQUALP hashing
5309 * tidied up Lisp initialization and toplevel
5310 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
5311 * command line argument processing
5312 * added POSIX-GETENV function to deal with Unix-ish environment variables
5313 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
5314 terminating SBCL on EOF
5315 * non-verbose GC by default
5316 * There is no more "sbcl" shell script; the sbcl file is now the C
5317 runtime executable (just like CMU CL).
5318 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
5320 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
5321 symbol and package information as Lisp native symbol and package objects
5322 instead of strings naming symbols and strings naming packages. This way,
5323 whenever packages are renamed (as in warm init), debug information is
5324 transformed along with everything else.
5325 * tweaked the optimization policy declarations which control the building
5326 of SBCL itself. Now, among other things, the system no longer saves
5327 source location debugging information. (This helps two problems at once
5328 by reducing SBCL size and by keeping SBCL from trying to look for its
5329 sources -- which may not exist -- when reporting errors.)
5330 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
5331 debugging and testing purposes
5332 * cleaned up printing, making the printer call PRINT-OBJECT for
5333 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
5334 methods, giving nearly-ANSI behavior
5335 * converted almost all special variables to use *FOO* naming convention
5336 * deleted PARSE-TIME functionality, since it can be done portably
5337 * moved some files out of cold init into warm init
5338 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
5340 * regularized formatting of source files
5341 * added an install.sh script
5342 * fixed ridiculous memory usage of cross-compiler by making
5343 compiler/alloc.lisp not try to do pooling unless it can hook
5344 itself into the GC of the cross-compilation host. Now the system
5345 builds nicely on my old laptop.
5346 * added :SB-ALLOC in target-features.lisp-expr
5347 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
5348 was not implemented)
5349 * re-did condition handling and note reporting in the compiler. Notes
5350 are no longer handled by signalling conditions. Style warnings
5351 and warnings are handled more correctly and reported in such a way
5352 that it's easy to find one or the other in your output (so that you
5353 can e.g. figure out which of many problems caused COMPILE-FILE to
5355 * changed the severity of several compiler warnings from full WARNING
5356 to STYLE-WARNING in order to conform with the ANSI spec; also changed
5357 compiler note reporting so that it doesn't use the condition system
5358 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
5359 COMPILE-FILE command)
5360 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
5361 function. As a consequence, START-BLOCK and END-BLOCK declarations are
5362 no longer supported, since their implementation was deeply intertwingled
5363 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
5364 * removed bogus "support" for compiler macros named (SETF FOO), and
5365 removed the compiler macro for SETF INFO (but only after making a fool
5366 of myself on the cmucl-imp mailing list by posting a bogus patch for
5367 DEFINE-COMPILER-MACRO..)
5368 * Compiled files containing forms which have side effects on the Lisp
5369 reader (such as DEFPACKAGE forms) are now handled more correctly.
5370 (Compiler queuing of top level lambdas has been suppressed by setting
5371 *TOP-LEVEL-LAMBDA-MAX* to 0. )
5372 * deleted various currently-unused source files, e.g. gengc.lisp. They
5373 may be added back at some point e.g. when porting to other architectures,
5374 but until they are it's distracting to distribute them and to try to
5376 * deleted "UNCROSS couldn't recurse through.." style warnings, since
5377 there were so many of them they're just distractions, and UNCROSS is
5378 known to be able to handle the current sources
5379 * moved PROFILE functionality into TRACE, so that it will be clear
5380 how the wrapping and unwrapping of functions when you profile them
5381 interacts with the wrapping and unwrapping of functions when you
5382 trace them. (Actually, the functionality isn't there yet, but at least
5383 the interface specification is there. Hopefully, the functionality will
5384 arrive with some future maintenance release.)
5385 * removed host-oops.lisp
5386 * changed signature of QUIT function to allow UNIX-CODE argument
5387 * fixed READ-SEQUENCE bug
5388 * tweaked verbose GC output so that it looks more like the progress
5389 output that ANSI specifies for functions like LOAD
5390 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
5391 * added <http://sbcl.sourceforge.com> to the banner information printed by