1 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
2 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
3 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
4 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now
5 part of the supported interface.
6 * new feature: Single-stepping of code compiled with DEBUG 2 or higher
7 and (> DEBUG (MAX SPACE SPEED)) is now possible.
8 * new feature: saving cores with foreign code loaded is now
9 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based
10 on Timothy Moore's work for CMUCL)
11 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
12 (thanks for Teemu Kalvas)
13 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
14 case instead of terminating the iteration (thanks for Julian Squires,
15 Sean Champ and Raymond Toy)
16 * bug fix: incorrect expansion of defgeneric that caused
17 a style warning. (thanks for Zach Beane)
18 * on x86 compiler supports stack allocation of results of LIST and
19 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
20 CMUCL implementation by Gerd Moellmann)
22 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
23 * incompatible change: the internal functions
24 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
25 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
26 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
27 instead of the old functions.
28 * new feature: on platforms where "dladdr" is available foreign
29 function names now appear in backtraces. (based on Helmut Eller's
31 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
32 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
34 * documentation: ASDF manual is now distributed with SBCL.
35 * bug fix: SBCL can now load its contributed modules with REQUIRE
36 even if the system-provided entries have been removed from
37 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
39 * bug fix: backtraces involving undefined functions or assembly
40 routines are more informative. (thanks to Brian Downing)
41 * bug fix: mutually referent alien structures now work correctly.
42 (reported by Rick Taube)
43 * bug fix: structures defined by WITH-ALIEN can be referred to
44 within other definitions in the same WITH-ALIEN.
45 * bug fix: division operators (MOD, TRUNCATE and the like) with
46 constant zero divisors and integer dividends no longer generate
48 * bug fix: provide default methods for INPUT-STREAM-P and
49 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
50 * bug fix: improve the detection and resolution of MOP metacycles
51 (where effective method computation depends on the generic function
52 having its effective method computed). (reported by Bruno Haible)
53 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
54 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
55 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
56 * bug fix: pathnames with relative directory components can be
57 represented relative to default pathnames.
58 * optimization: in taking the GCD of bignums, reduce the two bignums
59 to approximately the same size (using Euclid's algorithm) before
60 applying the more sophisticated binary GCD. (thanks to Juho
62 * optimization: COUNT on bitvectors now operates word-at-a-time.
63 * optimization: ASH with a positive, but not necessarily constant,
64 (leftwards) shift, when in a modular context, is compiled to a
66 * fixed some bugs revealed by Paul Dietz' test suite:
67 ** FORMAT variable parameters ("~V<char>") are defaulted properly
68 if the corresponding argument is NIL.
69 ** FORMAT directives accepting a minpad parameter treat negative
71 ** literal commas as character parameters to FORMAT directives are
73 ** literal spaces directly after ~<Newline> directives within a
74 format-logical-block (~:< ~@:>) do not induce :FILL-style
76 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
77 as specified: it no longer includes conditional newlines).
78 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
80 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
81 :PER-LINE-PREFIX argument does not evaluate to a string.
83 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
84 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
85 the manual for details; for now, package locks can be disabled by
86 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
87 if no major problems are found then it is likely that they will be
88 compiled in unconditionally.
89 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
90 unsupported operators on all platforms. To load a shared library
91 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
92 object file, link it into a shared library outside of SBCL and
93 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
95 * bug workaround: ROOM T and the GC were not working together
96 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
97 reporting facility aren't preserved. That reporting has been
98 disabled, so now until and unless someone figures out how to make it
99 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
100 * minor incompatible change: as threatened around sbcl-0.8.0, the
101 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
102 The symbols are also exported from SB-PCL for backwards
103 compatibility, but more so than before SB-PCL should be treated as
104 an implementation-internal package.
105 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
107 * the SB-SPROF contrib now works on (most) non-x86 architectures.
108 It is known as of this release not to work on the Alpha, however.
109 * fixed bug #167: errors signalled due to illegal syntax in method
110 bodies are now more legible.
111 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
112 designators and can hence be used with TYPEP.
113 * fixed bug #333: CHECK-TYPE now ensures that the type error
114 signalled, if any, has the right object to be accessed by
115 TYPE-ERROR-DATUM. (reported by Tony Martinez)
116 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
117 5.1.2.3 for multiple-value place subforms. (reported by Kalle
119 * fixed bug #334: programmatic addition of slots using specialized
120 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
121 and :ALLOCATION :CLASS slots.
122 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
123 float exponents. (rereported by Peter Seibel)
124 * fixed a bug: #\Space (and other whitespace characters) are no
125 longer considered to be macro characters in standard syntax by
127 * fixed bug: initialization of condition class metaobjects no longer
128 causes an instance of the condition to be created. (reported by
130 * fixed bug: it is now possible to have slots such that
131 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
132 description is neither :INSTANCE nor :CLASS.
133 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
134 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
135 SLOT-VALUE-USING-CLASS), and no longer causes errors with
136 non-standard SLOT-DEFINITION-ALLOCATION values.
137 * fixed bugs: various race conditions handling exiting threads.
138 CL-PPCRE's thread torture test now passes.
139 * fixed arguably-a-bug: GC time proportional to number of threads in
140 system even when most of them are idle
141 * optimization: improved performance of BIT and SBIT on bit-vectors.
142 * .fasl file incompatibility: The fasl file version number has
143 been incremented because of changes associated with package locks.
145 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
146 * minor incompatible change: the system no longer provides
147 optimization hints (conditions which are TYPEP
148 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
149 mode; these hints are still emitted when higher SPEED optimization
151 * new contrib module: a sampling profiler (profiling by statistical
152 sampling, rather than by instrumenting functions) is available as
153 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
154 * the behaviour of the standard function ED is now customizeable by
155 third parties through a hook variable: see ED's documentation
156 string for information on the protocol.
157 * the compiler no longer emits efficiency notes for (FUNCALL X)
158 when the type of X is uncertain under default optimization
160 * fixed bug 276: mutating a binding of a specialized parameter to a
161 method to something that is not TYPEP the specializer is now
163 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
164 exhibit the required behaviour on the x86 platform. (thanks to
165 Peter van Eynde, Eric Marsden and Bruno Haible)
166 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
167 even for difficult arguments. (reported by Peter Graves)
168 * fixed bug 141a: the backquote printer now descends quoted
170 * fixed another bug in backquote printing: no more destructive
171 modification of the form's list structure. (reported by Brian
173 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
174 move between its address being taken and the call to
175 interrupt_thread, fixing a crashing race condition.
176 * the SB-POSIX contrib implementation has been adjusted so that it
177 no longer exhibits ridiculously poor performance when constructing
178 instances corresponding to C structs.
180 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
181 * minor incompatible change: the sb-grovel contrib now treats C
182 structures as alien (in the sense of SB-ALIEN) objects rather than
183 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
184 has implications for memory management of client code
185 (sb-grovel-returned objects must now be manually managed) and for
186 type safety (alien objects now have full types).
187 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
188 used to control emission of compiler diagnostics, rather than the
189 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
190 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
191 quality should be considered deprecated.
192 * install.sh now installs the user manual as well
193 * (not quite a new documentable feature, but worth considering in
194 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
195 beginnings of a semantically meaningful condition hierarchy is
196 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
198 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
199 designator as the defaults argument.
200 * fixed bug: Displaced arrays whose displaced-to array has become
201 too small now cause ARRAY-DIMENSION to signal an error, providing
202 for safer bounds-checking. (reported by Bruno Haible)
203 * fixed bug: DEFCLASS slot definitions with identical :READER and
204 :WRITER names now signal a reasonable error. (reported by Thomas
206 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
208 * fixed bug: Invalid slot specification errors now print correctly.
209 (thanks to Zach Beane)
210 * fixed bug 320: Shared to local slot value transfers in class
211 redefinitions now happen corrently from superclasses as
212 well. (reported by Bruno Haible)
213 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
215 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
216 improper lists correctly. (reported by Bruno Haible)
217 * fixed bug 313: source-transform for <fun-name> was erroneously
218 applied to a call of a value of a variable with name <fun-name>.
219 (reported by Antonio Menezes Leitao)
220 * fixed bug 307: The obsolete instance protocol ensures that
221 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
222 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
223 remove dead unknown-values globs from the middle of the stack.
224 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
225 easier to resume long computations after using *BREAK-ON-SIGNALS*
226 to diagnose and fix failures. (thanks to Nikodemus Siivola)
227 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
228 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
229 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
230 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
231 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
233 * fixed a (fairly theoretical) bug in string printing: if
234 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
235 does not have array-element-type equal to the most general string
237 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
238 function name. (thanks to Nikodemus Siivola)
239 * fixed bug: compile-time format string checker failed on
240 non-closed ~{. (reported by Thomas F Burdick)
241 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
242 don't warn on legal loop code involving more than one aggregate
243 boolean. (thanks to Nikodemus Siivola)
244 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
245 in keyword position to MAKE-PACKAGE was not being reported as
247 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
248 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
250 * fixed bugs 280 and 312: the checking for multiple definitions in a
251 file is less likely to become confused by uses of inline
253 * fixed bug: the #S reader macro performs the keyword coercion
254 specified for slot names. (reported by Kalle Niemitalo)
255 * fixed bug: lambda lists may contain symbols whose names start with
256 & but are not lambda-list-keywords; their occurrence triggers a
258 * fixed bug 321: define-method-combination argument lambda lists do
259 not cause invalid code to be generated when &optional or &aux
260 variables have default values. (reported by Bruno Haible)
261 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
262 have CLOS classes; this appears also to have fixed reported
263 instability in stack exhaustion detection.
264 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
265 MUFFLE-WARNING when no associated restart is present is now
267 * optimization: rearranged the expansion of various defining macros
268 so that each expands into only one top-level form in a
269 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
271 * optimization: used a previously little-used slot in symbols to
272 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
274 * fixed some bugs revealed by Paul Dietz' test suite:
275 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
277 ** Fixed an optimization bug related to inheritance of initforms
278 from local to shared slots.
279 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
280 ** CAST optimizer forgot to flush argument derived type.
281 ** print/read consistency on floats is now orders of magnitude
282 more likely. (thanks also to Bruno Haible for a similar report
284 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
285 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
286 for objects of type REAL. Make it so.
287 ** SXHASH is specified (infelicitously) to respect similarity,
288 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
289 it so. (thanks to Markus Ziegler)
290 ** on the Alpha, the compiler succeeds in compiling functions
291 returning a known number of arguments greater than 63.
292 ** fixed handling of invalid NIL arguments in keyword position
294 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
296 ** provided a readably-printable representation for RANDOM-STATE
298 ** ensured that pathnames, where they have a namestring, always
299 print using #P"..." syntax.
301 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
302 * Support for the forthcoming 2.0 version of the NetBSD kernel
303 running on x86 hardware has been added. (thanks to Perry
304 E. Metzger most immediately, and others for their past work)
305 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
306 current release version; SBCL's OpenBSD support had been broken
307 since about the time of OpenBSD's switch to ELF binary format.)
308 * [placeholder for DX summary]
309 ** user code with &REST lists declared dynamic-extent, under high
310 speed or space and low safety and debug optimization policy.
311 * The manual has been converted to Texinfo format and the debugger
312 chapter from the cmucl manual has been added.
313 * A facility has been added to extract documentation strings from
314 sbcl and store them as Texinfo-formatted snippets for inclusion in
315 the manual (via Texinfo's @include directive)
316 * bug fix: compiler emitted division in optimized DEREF. (thanks for
317 the test case to Dave Roberts)
318 * bug fix: multidimensional simple arrays loaded from FASLs had fill
319 pointers. (reported by Sean Ross)
320 * bug fix: PROFILE output is printed nicely even for large numerical
321 values. (thanks to Zach Beane)
322 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
323 greater than 32 handle EOF correctly.
324 * bug fix: on X86 an immediate argument of the IMUL instruction is
325 correctly printed in disassembly. (thanks to Lutz Euler)
326 * bug fix: class slots in redefined classes preserve their old
327 values. (thanks to Bruno Haible and Nikodemus Siivola)
328 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
329 succeeds. (reported by Marco Baringer)
330 * fixed some bugs revealed by Paul Dietz' test suite:
331 ** READ-SEQUENCE now works on ECHO-STREAMs.
332 ** RATIONALIZE works more according to its specification. (thanks
335 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
336 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
337 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
338 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
339 should matter to you only if you rebind the printer control
340 variables and then find you want different bindings in the
341 debugger than in the ordinary execution of your program.)
342 * The runtime build system has been tweaked to support building
343 (on SPARC/SunOS) using a C compiler which invokes Sun's own
344 assembler and linker. (thanks to Nikodemus Siivola)
345 * Unbound, undefined, undeclared variables now trigger full
346 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
347 more often programmer error than deliberate exploitation of undefined
349 * optimization: the hash algorithm for strings has changed to one
350 that is less vulnerable to spurious collisions. (thanks to Juho
352 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
353 needless bounds checking. (thanks to Juho Snellman)
354 * optimization: implemented multiplication as a modular
355 (UNSIGNED-BYTE 32) operation on the PPC backend.
356 * fixed some bugs revealed by Paul Dietz' test suite:
357 ** ADJUST-ARRAY now copies the datum in a zero rank array if
359 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
360 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
361 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
363 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
365 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
367 ** ECHO-STREAMs no longer attempt to echo the end of file value to
368 their output stream on EOF from read.
369 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
370 have been read to end-of-file.
371 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
373 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
374 description of determination of which consecutive characters
376 ** Printing the "Space" character with escaping on now yields "#\\ ",
377 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
378 ** Reading floating-point numbers with *READ-BASE* set to a number
379 less than 10 works correctly.
380 ** Reading floating-point numbers with *READ-BASE* set to a number
381 more than 10 works correctly.
382 ** Printing with *PRINT-READABLY* targets the standard readtable, not
383 the readtable currently in effect.
385 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
386 * minor incompatible change: parsing of namestrings on a physical
387 (Unix) host has changed; numbers after the final #\. in a
388 namestring are no longer interpreted as a version field. This is
389 intented to be largely invisible to the user, except that the
390 meaning of the namestring "*.*.*" has changed: it now refers to a
391 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
392 should usually be replaced by
393 (make-pathname :name :wild :type :wild :version :wild)
394 with the added benefit that this is more likely to be portable.
395 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
396 option to OPEN now signals an error if the file being opened
397 exists; this may have an impact on existing code.
398 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
399 signals received, on the PowerPC platforms (both Linux and
400 Darwin). (thanks to Pierre Mai for pointing out the location of
402 * several fixes on OS X: The system now builds and runs cleanly on
403 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
404 (thanks to Brian Mastenbrook)
405 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
406 second-resolution: integer multiples of 1/3600 between -24 and 24.
407 (thanks to Vincent Arkesteijn)
408 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
409 type when called with 1 argument; PEEK-CHAR checked type of
410 PEEK-TYPE only after having read first character from a
411 stream. (reported by Peter Graves)
412 * bug fix: the garbage collector now has much better locality
413 behaviour, and in particular no longer treats all memory as being
414 exhausted when many small objects point to each other in a deeply
416 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
417 recognized as being TYPEP their class.
418 * bug fix: the PUSHNEW documentation string has been corrected.
419 (thanks to Vincent Arkesteijn)
420 * bug fix: defaulting of the value for the last of an atypically
421 large number of multiple values being bound was not being
422 performed correctly on the Alpha or PPC platforms
423 * optimization: implemented multiplication as a modular
424 (UNSIGNED-BYTE 32) operation on the x86 backend.
425 * optimization: SEARCH on simple-base-strings can now be open-coded.
426 (see also contrib/compiler-extras.lisp for inspiration for
427 teaching the compiler about the Boyer-Moore algorithm).
428 * value, returned by MAX (and MIN) called with several EQUALP, but
429 not EQL, arguments now does not depend on compiler settings.
430 * fixed some bugs revealed by Paul Dietz' test suite:
431 ** in stack analysis liveness information is propagated from
432 non-local entry points.
433 ** pathwise CAST removing failed when the CAST node did not start
435 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
436 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
438 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
439 host is already defined.
440 ** RENAME-FILE works on streams instead of signalling an internal
442 ** PEEK-CHAR uses the current readtable when determining whether
443 or not a character is whitespace.
444 ** MERGE-PATHNAMES handles the case when the pathname does not
445 specify a name while the default-pathname specifies a version.
446 ** Pathnames now stand a better chance of respecting print/read
448 ** Attempting to use standardized file system operators with a
449 pathname with invalid :DIRECTORY components signals a
451 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
453 ** DIRECTORY on logical pathnames is more correct.
454 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
455 signal a TYPE-ERROR if their argument is not a stream.
456 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
457 designator argument does not designate a stream.
458 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
459 examining the synonym.
460 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
462 ** OPEN and WITH-OPEN-STREAM allow opening streams with
463 element-type larger than ([UN]SIGNED-BYTE 32).
465 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
466 * When built with the :SB-FUTEX feature, threaded builds now take
467 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
468 for faster/more reliable mutex and condition variable support.
469 * Incompatible change (but one you probably shouldn't have been using
470 anyway): the interface and code for arbitrating between multiple
471 threads in the same user session has been redesigned.
472 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
473 error when called without an explicit environment argument.
474 (thanks to Nikodemus Siivola)
475 * bug fix: buffered :DIRECTION :IO streams are less likely to become
476 confused about their position. (thanks to Adam Warner and Gerd
478 * bug fix: Pretty printing backquoted forms with unquotations in the
479 argument list position of various code constructs such as LAMBDA
480 now works correctly. (reported by Paul Dietz)
481 * bug fix: Pretty printing unquotations no longer loses all
482 stream position information.
483 * optimization: performance of string output streams is now less
484 poor for multiple small sequence writes.
485 * optimization: performance of CSUBTYPEP in the presence of complex
486 expressions involving CONS and NOT many times has been improved.
487 (reported by Paul Dietz)
488 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
490 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
491 streams for the REPL, for the debugger, and so on. (thanks to
493 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
494 * fixed some bugs revealed by Paul Dietz' test suite:
495 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
496 is ignored if it is too small, rather than propagating through
497 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
498 ** extremely complex negations of CONS types were not being
499 sufficiently canonicalized, leading to inconsistencies in
501 ** VALUES tranformer lost derived type.
503 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
504 * fixed a bootstrapping bug: the build process no longer assumes
505 that the various BOOLE-related constants have the same value in
506 host and target lisps. (noted by Paul Dietz' test suite on an
507 SBCL binary built from CLISP)
508 * The system can now be dynamically linked on the MIPS platform,
509 which enables dynamic loading of foreign code from Lisp. (thanks
510 to Ralf Baechle for discussions on the MIPS ABI)
511 * The system now records debugging information for its own source
512 files in a filesystem-position-independent manner, relative to
513 the "SYS" logical host.
514 * fixed a compiler bug: MV-LET convertion did not check references
515 to the "max args" entry point. (reported by Brian Downing)
516 * tweaked disassembly notes to be less confident about proclaiming
517 some instruction as an LRA. (thanks to Brian Downing)
518 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
519 now each have their own history, command character, and other
520 characteristics. (thanks to David Lichteblau)
521 * fixed some bugs revealed by Paul Dietz' test suite:
522 ** compiler failure in compiling LOGAND expressions including a
524 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
525 shift greater than 32.
526 ** FLUSH-DEST did not mark blocks for type check regeneration.
527 ** HANDLER-CASE failed to accept declarations in handler clauses
528 in some circumstances.
530 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
531 * New code in contrib/sb-introspect (still probably not entirely
532 stable yet) provides some support for smart Lisp development
533 environments like SLIME.
534 * The conditions signalled for errors occurring when loading .fasl
535 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
536 in a way which should help ASDF recover gracefully.
537 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
538 stuff has been cleaned up. If you code contrib/ stuff, this might
539 affect you, and you can look at contrib/README, contrib/STANDARDS,
540 and/or the 0.8.4.27 diff to check.
541 * In full calls the compiler now does not generate checks for declared
542 argument types for all arguments.
543 * various threading fixes
544 ** and some experimental patches which didn't make it into
545 the main tree for this release, but which are shipped in
546 contrib/experimental-thread.patch as a possible fix for some
547 failures (deadlock, spinning...) in GC-intensive multithreaded
549 * fixed PPC build problem (source code incompatibility of different
550 library versions): added offsetof() hackery which attempts to divine
551 where glibc maintainers put uc_mcontext today
552 * fixed bug 282: compiler does not trust type assertions while passing
553 arguments to a full call.
554 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
555 &OPTIONAL VALUES type parameter.
556 * fix bug 214: algorithm for noting rejected templates is now more
557 similar to that of template seletion. (also reported by rydis on
559 * fixed bug 141b: printing backquoted information readably and prettily
560 inserts a space where necessary.
561 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
562 (CHARACTER 10) are now reported as errors, rather than propagated
563 as unknown types. (reported by piso on #lisp)
564 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
565 with values NIL and :ERROR. (thanks to Milan Zamazal)
566 * fixed bug 191c: CLOS now does proper keyword argument checking as
567 described in CLHS 7.6.5 and 7.6.5.1.
568 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
569 longer raise an error; further, using a list as a for-as-arithmetic
570 counter now raises a meaningful error.
571 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
572 now understood by sequence creation functions such as MAKE-SEQUENCE
574 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
575 a STRING-INPUT-STREAM.
576 * compiler enhancement: SIGNUM is now better able to derive the type
578 * type declarations inside WITH-SLOTS are checked. (reported by
580 * fixed some bugs revealed by Paul Dietz' test suite:
581 ** incorrect optimization of TRUNCATE for a positive first
582 argument and negative second.
583 ** compiler failure in let-convertion during flushing dead code.
584 ** compiler failure while deriving type of TRUNCATE on an
585 interval, containing 0.
586 ** ASH of a negative bignum by a negative bignum count now returns
588 ** intersection of CONS types now canonicalizes properly, fixing
589 inconsistencies in SUBTYPEP.
591 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
592 * incompatible change: The --disable-debugger command line
593 option now clobbers the debugger at a more fundamental
594 level, by redefining #'INVOKE-DEBUGGER instead of by
595 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
596 is specified by ANSI to ignore *DEBUGGER-HOOK* and
597 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
598 enter the debugger REPL and then suffer recursive errors
599 because *DEBUG-IO* is also messed up in --disable-debugger mode;
600 while under the new system, BREAK in --disable-debugger mode
601 terminates the system just as an unhandled error would.
602 * fixed compiler performance when processing loops with a step >1;
603 * bug fix: DOCUMENTATION now retrieves generic function
604 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
605 support has been systematized, and now supports the methods
606 specified by ANSI, along with a default method and a method for
607 slot documentation. (reported by Nathan Froyd)
608 * bug fix: effective methods associated with a generic function are
609 no longer cached over a change of that generic function's method
610 combination. (reported by Andreas Fuchs)
611 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
612 names a non-existent directory. (thanks to Andreas Fuchs)
613 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
614 the PPC platform, lead to stack corruption; this has been fixed.
615 (reported by Rainer Joswig)
616 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
617 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
618 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
619 arithmetic in general, is now much more reliable on the PPC
621 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
622 platform now returns the right answer.
623 * optimization: restored some effective method precomputation in
624 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
625 precomputation is now tunable.
626 * optimization: compiler-internal data structure use has been
627 reviewed, and changes have been made that should improve the
628 performance of the compiler by about 20%.
629 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
630 simple-base-strings and simple-bit-vectors is improved.
631 * optimization: the optimization of 32-bit logical and arithmetic
632 functions introduced in version 0.8.3 on the x86 has been
633 implemented on the mips, ppc and sparc platforms; an
634 implementation of the same facility, but for 64-bit arithmetic,
635 has been added for the alpha.
636 * microoptimization: the compiler is better able to make use of the
637 x86 LEA instruction for multiplication by constants.
638 * bug fix: in some situations compiler did not report usage of
639 generic arithmetic in (SPEED 3) policy.
640 * bug 145b fix: compiler used wrong type specifier while converting
641 MEMBER-types to numeric.
642 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
644 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
645 index argument now works properly on the Alpha platform.
646 * bug fix: floating point exception treatment on the Alpha platform
648 * bug fix: FILE-POSITION works much better on string input and
649 output streams. (thanks to Nikodemus Siivola)
650 * bug fix: many threading/garbage collection symptoms sorted.
651 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
652 might be pseudo-atomic.
653 * internal change: Stopping for GC is now done with signals not
654 ptrace. GC is now done in whichever thread wanted it, instead of
656 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
658 * bug fix: result form in DO is not contained in the implicit
660 * incompatible change: ICR structure is changed; the value part of
661 CONTINUATION is now called LVAR; corresponding functions are
662 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
663 * added type deriver for ISQRT (thanks to Robert E. Brown).
664 * bug fix: better support for loading from the command line when an
665 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
667 * fixed some bugs revealed by Paul Dietz' test suite:
668 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
669 ** ROUND and FROUND now give the right answer when given very
670 small float arguments.
671 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
673 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
674 ** (GCD 0 <negative-integer>) returned <negative-integer>.
675 ** LCM should return a non-negative integer.
676 ** PARSE-INTEGER returned the index of a terminator instead of the
677 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
678 ** PARSE-INTEGER returned an incorrect index being applied to a
680 ** LCM with two arguments of 0 returns 0 rather than signalling
682 ** unsigned addition of a 32-bit constant with the high bit set no
683 longer causes an internal compiler error on the x86.
684 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
685 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
686 with negative last argument.
687 ** byte specifiers with zero size and position no longer cause
688 an error during type derivation.
689 ** bignum multiplication on the Alpha platform now returns the
691 * porting: The system now builds on SuSE AMD64, although it still
692 generates a 32-bit binary.
693 * .fasl file incompatibility: The fasl file version number has
694 been incremented (because of the changes to internal compiler
695 data structures referred to above).
697 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
698 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
699 more accurately, on the Darwin kernel running on PowerPC hardware.
700 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
701 * Compiler code deletion notes now signal a condition of type
702 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
703 an associated MUFFLE-WARNING restart.
704 * The compiler now performs limited argument count validation of
705 constant format strings in FORMAT, and where appropriate in ERROR,
706 CERROR and WARN. (thanks to Gerd Moellmann)
707 * New ASDF-INSTALL contrib can be used for automatic download and
708 installation of third-party Lisp code from CCLAN or other sites
710 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
711 which forces another thread to execute a function supplied by the
713 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
714 now accept and act upon their :ELEMENT-TYPE keyword argument.
715 (reported by Martin Atzmueller, Edi Weitz)
716 * bug fix: FILE-POSITION now accepts position designators up to
717 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
718 is the greater. (thanks to Patrik Nordebo)
719 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
720 Kalle Olavi Niemitalo)
721 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
722 printable. (reported by Eric Marsden)
723 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
724 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
725 * x86 bug fix in control stack exhaustion checking: now shows backtrace
726 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
727 (thanks to Stig Sandoe)
728 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
729 UNREAD-CHAR now correctly includes the unread character in the
730 target sequence. (thanks to Gerd Moellmann)
731 * bug fix in threaded builds: the system can now be suspended and
732 resumed by shell job control with minimal disruption.
733 * bug fixes in times and timezones >2038AD
734 * better handling of "where is GNU make?" problem in build scripts
735 (thanks to Nikodemus Siivola)
736 * new optimization: inside a named function any reference to a
737 function with the same name is considered to be a self-reference;
738 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
739 optimization quality.
740 * new optimization on x86: logical functions and + now have
741 optimized (UNSIGNED-BYTE 32) versions, which are automatically
742 used when the result is truncated to 32 bits.
743 * VALUES declaration is partially enabled.
744 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
745 * fixed some bugs revealed by Paul Dietz' test suite:
746 ** The system now obeys the constraint imposed by
747 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
748 types form a lattice under type intersection.
749 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
750 ** ASSOC now ignores NIL elements in an alist.
751 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
752 and (1+ MOST-POSITIVE-FIXNUM) answers.
753 ** The addition of a method with invalid qualifiers to a generic
754 function does not cause an error to be signalled immediately;
755 a warning is signalled, and the error is generated only on
756 calling the generic function.
757 * changed .fasl file version number, in part to add type codes for
758 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
759 obscure ANSI requirements
761 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
762 * fixed bug 148: failure to inline-expand a local function left
763 garbage, confusing the compiler.
764 * fixed bugs 3cd: structure slot readers perform type check if the
765 slot can have an invalid value (i.e. it is either not initialized
766 or can be written with a less specific slot writer).
767 * bug fix: the compiler now traps array references to elements off
768 the end of an array; previously, the bounds checking in some
769 circumstances could go off-by-one.
770 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
772 * type declarations for array element types now obey the description
773 on the CLHS page "Declaration TYPE", as per discussions on
774 sbcl-help around 2003-05-08. This means that a declaration
775 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
776 declaration, all references to BAR will be asserted or assumed
777 (with THE, so dependent on compiler policy) to involve objects of
778 type FOO. Note that no such declaration is implied in
779 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
780 * declared types of functions from the "Conditions"
781 chapter. (reported by Paul Dietz)
782 * bug fix: CERROR accepts a function as its first argument.
783 * bug fix: NTH an NTHCDR accept a bignum as index
784 arguments. (reported by Adam Warner)
785 * optimization: character compare routines now optimize comparing
786 against a constant character. (reported by Gilbert Baumann)
787 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
788 argument now works properly on the MIPS platform.
789 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
790 * repeated evaluation of the same DEFSTRUCT, a slot of which is
791 declared to have a functional type, does not cause an error
793 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
794 many :DEFAULT-INITARGS. (reported by Istvan Marko)
795 * fixed bug: if last continuation of a deleted block has a
796 destination, this destination should be deleted too. (reported by
798 * fixed a bug in the bootstrap process: the host compiler's values
799 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
800 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
801 test case from Patrik Nordebo)
802 * improved the ability of the disassembler on the PPC platform to
803 provide helpful disassembly notes.
804 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
805 the class in more cases than previously.
806 * bug fix: FILE-POSITION now understands :START and :END for
807 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
808 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
809 8) data. (thanks to David Lichteblau)
810 * bug fix: it is possible to add a method to a generic function
812 * bug fix: reader failed to signal END-OF-FILE inside an
813 object representation. (reported by Nikodemus Siivola)
814 * fixed some bugs revealed by Paul Dietz' test suite:
815 ** LAST and [N]BUTLAST should accept a bignum.
816 ** condition slot accessors are methods.
817 ** (VECTOR NIL) is a subtype of STRING.
819 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
820 * minor incompatible change: some nonsensical specialized lambda
821 lists (used in DEFMETHOD) which were previously ignored now signal
823 * minor incompatible change: the system is now aware of the types of
824 variables in the COMMON-LISP package, and will signal errors for
825 most violations of these type constraints (where previously they
826 were silently accepted).
827 * minor incompatible change: COMPILE-FILE now uses the freedom
828 afforded (ANSI 3.2.2.3) to use derived function types for
829 functions defined in the same file. This also permits the system
830 to warn on static type mismatches and function
831 redefinition. (Currently it does not work with high DEBUG level.)
832 * minor incompatible change: VALUES declaration is disabled.
833 * When issuing notes, the compiler now signals a condition of type
834 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
835 restart for use in user handlers. It is expected that the
836 COMPILER-NOTE condition will eventually become a condition
837 supertype to a hierarchy of note types, which will then be
838 handleable in a similar fashion. However, at the moment, no such
839 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
840 but it's an implementation detail, not a classification for the
842 * Changes in type checking closed the following bugs:
843 ** type checking of unused values (192b, 194d, 203);
844 ** template selection based on unsafe type assertions (192c, 236);
845 ** type checking in branches (194bc).
846 * A short form of VALUES type specifier has ANSI meaning (it has
847 increased the number of situations when SBCL cannot perform type
849 * fixed bug in DEFSTRUCT: once again, naming structure slots with
850 keywords or constants is permissible.
851 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
852 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
853 classes. (thanks to Antonio Martinez)
854 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
855 outputs FRESH-LINE or TERPRI, and no longer converts its stream
856 argument to a pretty-print stream. Instead, it leaves any such
857 operations to DESCRIBE-OBJECT methods.
858 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
860 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
861 lambda lists. (thanks to David Lichteblau)
862 * bug fix: Defining a generic function with a :METHOD-CLASS being a
863 subclass of STANDARD-METHOD no longer causes stack exhaustion.
864 (thanks to Gerd Moellmann)
865 * fixed bug 246: increased compilation speed of long
866 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
868 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
870 * DEFCONSTANT now throws a condition of type
871 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
872 constant to a non-EQL value; CONTINUE and ABORT restarts
873 respectively change and preserve the value.
874 * fixed bug 63: The code walker, part of the implementation of CLOS,
875 is now better at handling symbol macros.
876 * bug fix: There is no longer an internal implementation type named
877 CL:LENGTH. (reported by Raymond Toy)
878 * bug fix: In macro-like defining macros/special operators the
879 implicit block does not enclose the lambda list.
880 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
881 enclosed in parentheses) are not suitable as type specifiers, and
882 their use properly signals an error now.
883 * bug fix: An argument count mismatch for a type specifier in code
884 being compiled no longer causes an unhandled error at compile
885 time, but signals a compile-time warning.
886 * fixed simple vector readable printing
887 * bug fix: DESCRIBE takes more care over whether the class
888 precedence list slot of a class is bound before accessing it.
889 (reported by Markus Krummenacker)
890 * bug fix: FORMATTER can successfully compile pretty-printer format
891 strings which use variants of the ~* directive inside.
892 * bug fix: SEARCH now applies its TEST predicate to the elements of
893 the arguments in the correct order. (thanks to Wolfhard Buss)
894 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
895 in type inference. (thanks to Robert E. Brown)
896 * bug fix: Reading in symbols with an explicit package name of ""
897 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
898 * fixed some bugs revealed by Paul Dietz' test suite:
899 ** NIL is now allowed as a structure slot name.
900 ** Arbitrary numbers, not just REALs, are allowed in certain
901 circumstances in LOOP for-as-arithmetic clauses.
902 ** Multiple class redefinitions before slot access no longer
904 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
905 association between the name and a class.
906 ** Generic functions with non-standard method-combination and over
907 five methods all of which return constants no longer return NIL
908 after the first few invocations. (thanks to Gerd Moellmann)
909 ** CALL-NEXT-METHOD with no arguments now passes the original
910 values of the arguments, even in the presence of assignment.
911 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
913 ** DISASSEMBLE works with closures and funcallable instances.
914 ** ADD-METHOD now returns the generic function, not the new method.
915 ** FIND-METHOD signals an error if the lengths of the specializers
916 is incompatible with the generic function, even if the ERRORP
918 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
919 which its argument is a member.
920 ** DEFCLASS only redefines the class named by its class-name
921 argument if that name is the proper name of the class;
922 otherwise, it creates a new class.
923 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
924 of the UNBOUND-SLOT condition to the name of the slot.
925 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
926 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
927 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
928 SLOT-MAKUNBOUND in the specified fashion.
930 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
931 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
932 cross-compilation host. As a consequence, we can now bootstrap our
933 way up to SBCL starting with a bare gcc toolchain and human-readable
934 source code (first the source to CLISP, then the source to SBCL).
935 * A contributed module containing a partial implementation of the
936 simple-streams interface has been included. (thanks to Rudi
938 * A contributed module implementing the RFC1321 Message Digest
939 Algorithm, known as MD5, has been included.
940 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
941 no longer has any effect, as the code controlled by this feature
942 has been deleted. (As far as we know, no-one has ever built using
943 this feature, and its semantics were confused in any case).
944 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
945 work on conditions (as required by the ANSI specification),
946 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
947 expected behaviour on conditions. Users should note, however,
948 that such behaviour is not required by the ANSI specification,
949 and so use of this behaviour may render their code unportable.
950 * fixed some bugs revealed by Paul Dietz' test suite:
951 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
953 ** &ENVIRONMENT parameter in macro lambda list is bound first.
954 ** SXHASH on condition objects no longer returns NIL.
955 ** :ALLOCATION :CLASS slots are better treated; their values are
956 updated on class redefinition, and initforms inherited from
957 superclasses are applied.
958 ** REMOVE-METHOD returns its generic function argument even when
959 no method was removed.
960 ** SHARED-INITIALIZE now initializes the values of the requested
961 slots, including those with :ALLOCATION :CLASS.
962 ** ALLOCATE-INSTANCE now works on structure classes defined via
963 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
965 ** SLOT-EXISTS-P now works on conditions, as well as structures
967 ** MAKE-LOAD-FORM now has the required methods on
968 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
969 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
970 keyword, and now implements the SLOT-NAMES argument.
971 ** methods with &OPTIONAL arguments no longer allow too many
972 arguments to be passed in the call without error.
973 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
974 option is consistent with the required arguments of the generic
975 function lambda list.
976 * bug fix: REQUIRE accepts a string designator. (Thanks to
978 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
979 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
980 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
981 * bug fix: The compiler now checks for duplicated variables in macro
983 * bug fix: SETQ on globals returns the correct value.
984 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
985 not a COMPILER-ERROR (followed by some other strange error on
986 choosing the CONTINUE restart).
987 * bug fix: make.sh and friends are now more consistent in the way that
988 they look for GNU "make".
990 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
991 * experimental native threads support (on x86 Linux >=2.4 only).
992 This is not compiled in by default: you need to add :SB-THREAD to
993 the target features. See the "Beyond ANSI" chapter of the manual
995 * fix for longstanding nonANSIism: The old distinction between
996 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
997 The return value from CL:FIND-CLASS is now a CLOS class, and
998 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
999 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1000 * An interface to the MetaObject Protocol, as described in Kiczales,
1001 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1002 MIT Press, 1991, is available from the SB-MOP package.
1003 * incompatible change: the SB-PCL package should now be considered
1004 a private implementation detail, and no longer a semi-private MOP
1006 * minor incompatible change: due to rearrangement for threads, the
1007 control stack and binding stack are now allocated at arbitrary
1008 addresses instead of being hardcoded per-port. Users affected by
1009 this probably have to be doing advanced things with shared
1010 libraries, and will know who they are.
1011 * minor incompatible change: Previously, all --eval forms used were
1012 processed with READ before any of them were processed with EVAL.
1013 Now each --eval form is processed with both READ and EVAL before
1014 the next --eval form is processed. (Thus package operations like
1015 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1016 work as the user might reasonably expect.)
1017 * minor incompatible change: *STANDARD-INPUT* is now only an
1018 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1020 * minor incompatible change: Y-OR-N-P is now character-oriented,
1021 not line oriented. Also, YES-OR-NO-P now works without errors.
1022 (thanks to Antonio Martinez)
1023 * sb-aclrepl module improvements: an integrated inspector, added
1024 repl features, and a bug fix to :trace command.
1025 * Known functions, which cannot be open coded by the backend, are
1026 considered to be able to check types of their arguments. (fixing
1027 a bug report by Nathan J. Froyd)
1028 * fixed a bug in computing method discriminating functions: It is
1029 now possible to define methods specialized on classes which have
1030 forward-referenced superclasses. (thanks to Gerd Moellmann)
1031 * fixed evaluation order in optional entries (reported by Gilbert
1033 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1034 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1035 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1036 required-by-AMOP NAME argument, as well as CLASS and
1037 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1038 * fixed bug 20: DEFMETHOD can define methods using names that are
1039 not the proper names of classes to designate class specializers.
1040 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1041 Unix file descriptors, instead of blowing up. (thanks to Antonio
1043 * Garbage collection refactoring: user-visible change is that a
1044 call to the GC function during WITHOUT-GCING will not do garbage
1045 collection until the end of the WITHOUT-GCING. If you were doing
1046 this you were probably losing anyway.
1047 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1048 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1049 TYPEP the latter but not the former.
1050 * The compiler issues a full WARNING for calls to undefined functions
1051 with names from the CL package.
1052 * MAP-INTO for a vector destination is open coded. (reported by
1053 Brian Downing on c.l.l)
1054 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1055 documentation string.
1056 * fixed some bugs revealed by Paul Dietz' test suite:
1057 ** COPY-ALIST now signals an error if its argument is a dotted
1059 ** Condition slots are now accessed more correctly in the presence
1060 of multiple initargs for a given slot.
1061 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1062 exclude restarts of the same name associated with a different
1064 ** DEFCLASS of forward-referenced classes with another
1065 forward-referenced class in the superclasses list no longer
1067 ** Condition slots are now initialized once each, not multiple
1068 times. (thanks to Gerd Moellmann)
1069 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1071 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1072 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1073 arguments contain duplicated elements.
1074 ** RESTART-CASE understands local macros.
1075 ** RESTART-CASE associates exactly its own restarts with a condition.
1076 ** ENDP in safe mode checks its argument to be of type LIST.
1077 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1078 in question is unbound.
1079 ** Optimized MAKE-INSTANCE functions no longer cause internal
1080 assertion failures in the presence of duplicate initargs.
1081 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1082 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1083 propagated even in the ctor optimized implementation of
1085 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1087 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1088 * a better implementation of SXHASH on (simple) bit vectors,
1089 measured both in execution speed and in distribution of results
1090 over the positive fixnums, has been installed. Likewise, a better
1091 implementation of EQUAL for simple bit vectors is now available.
1092 * fixed CEILING optimization for a divisor of form 2^k.
1093 * fixed bug 240 (emitting extra style warnings "using the lexical
1094 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1095 by Antonio Martinez)
1096 * fixed SXHASH, giving different results for NIL depending on type
1097 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1098 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1099 variable. (found by Rolf Wester)
1100 * SBCL does not ignore type declarations for special
1101 variables. (reported by rif on c.l.l 2003-03-05)
1102 * some bug fixes in contrib/sb-aclrepl/
1103 * fixed some bugs revealed by Paul Dietz' test suite:
1104 ** a bug in the CONS type specifier, whereby the CAR and CDR
1105 types got intertwined, has been fixed;
1106 ** the type system is now able to reason about the interaction
1107 between INTEGER and RATIO types more completely;
1108 ** APPEND, [N]REVERSE and NRECONC check that those their
1109 arguments, which must be proper lists, are really so;
1110 ** An array specialized to be unable to hold elements has been
1111 implemented, as required -- yes, really -- by ANSI;
1112 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1113 on malformed property lists;
1115 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1116 * incompatible packaging change: in line with Unix convention,
1117 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1118 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1119 * REQUIRE and PROVIDE are now optionally capable of doing something
1120 useful. See the documentation string for REQUIRE.
1121 * infrastructure for a managed SBCL contrib system: contributed
1122 modules in this release include:
1123 ** the ASDF system definition facility;
1124 ** an interface to the BSD Sockets API;
1125 ** an ACL-like convenience interface to the repl;
1126 (thanks to Kevin Rosenberg)
1127 ** an implementation of ROTATE-BYTE, with efficient implementation
1129 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1130 gives a closer approximation to the right answer than previously.
1131 (thanks to Raymond Toy)
1132 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1133 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1134 optional environment arguments, as required by ANSI.
1135 * fixed bugs in other functions taking environment objects, allowing
1136 calls with an explicit NIL environment argument to be compiled
1138 * fixed bug 228: primary return values from
1139 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1140 COMPILE or FUNCTION.
1141 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1142 :TYPE will no longer signal errors on innocuous objects.
1143 * fixed bug 231b: SETQ is better at respecting type declarations in
1144 the lexical environment.
1145 * fixed a bug in DEFCLASS: classes named by symbols with no or
1146 unprintable packages can now be defined.
1147 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1148 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1149 * fixed compiler failure related to checking types of functions.
1150 (reported by Robert E. Brown)
1151 * the compiler is now much more consistent in its error-checking
1152 treatment of bounding index arguments to sequence functions: in
1153 (SAFETY 3) code, errors will be signalled in almost all cases if
1154 invalid sequence bounding indices are passed to functions defined
1155 by ANSI to operate on sequences.
1156 * fixed a bug in the build procedure: documentation of SBCL-specific
1157 packages is now preserved and available in the final Lisp image.
1158 * lifted FDEFINITION lookup out of loops in the implementation of
1159 many list operations. (thanks to Robert E. Brown)
1160 * fixed a bug in the reader: the #n# reader macro now works for
1161 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1162 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1163 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1164 E. Brown and Tony Martinez respectively)
1165 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1166 SLOT-BOUNDP: in particular, it is now able to optimize them much
1167 better, and is now not vulnerable to having packages renamed.
1168 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1169 always called when a slot is not present in an instance. (thanks
1171 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1172 longer signal an error on unreading a character following EOF on
1173 the previous constituent stream. (thanks to Tony Martinez)
1174 * fixed some bugs revealed by Paul Dietz' test suite:
1175 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1176 not just nonnegative fixnums;
1177 ** the logical bit-array operators such as BIT-AND now accept an
1178 explicit NIL for their "opt-arg" argument (to indicate a
1179 freshly-consed result bit-array);
1180 ** ELT now signals an error on an invalid sequence index in safe
1182 ** the type system is now cleverer about negations of numeric
1183 types, and consequently understands the BIGNUM and RATIO types
1185 ** the type system is now cleverer about the interaction between
1186 INTEGER and RATIO types: while bugs still remain, many more
1187 cases are accurately computed;
1188 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1189 if it is in the last clause;
1190 ** CONSTANTLY now correctly returns a side-effect-free function in
1192 ** DECLARE is no longer treated as a special-operator; in
1193 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1194 * incremented fasl file version number due to the change in the
1195 DEFSTRUCT-SLOT-DESCRIPTION structure.
1197 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1198 * minor incompatible change: code processed by the "interpreter" or
1199 EVAL now has a compilation optimization policy of (DEBUG 2)
1200 (changed from (DEBUG 1)) to improve debuggability of interactive
1201 development, and to allow the use of the debug RETURN command in
1203 * an experimental implementation of the RETURN command for the
1204 debugger has been included. (thanks to Frederik Kuivinen)
1205 * fixed bug 62: constraints were not propagated into a loop.
1206 * fixed bug in embedded calls of SORT (reported and investigated by
1208 * fixed some bugs revealed by Paul Dietz' test suite:
1209 ** printing and reading of arrays with some dimensions having
1210 length 0 (thanks to Gerd Moellmann);
1211 ** BOA constructor with &AUX argument without a default value does
1212 not cause a type error;
1213 ** CONSTANTP now returns true for all self-evaluating objects.
1215 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1216 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1217 accessors that are related by inheritance, as specified in the
1218 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1219 Valtteri Vuorikoski)
1220 * The compiler is now able to inline functions that were defined in
1221 a complex lexical environment (e.g. inside a MACROLET).
1222 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1224 * Support for the upcoming FreeBSD-5.0 release has been included.
1225 (thanks to Dag-Erling Smorgrav)
1226 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1227 effect when it is not in a toplevel context.
1228 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1229 stand a better chance of being correct. (thanks to Gerd
1231 * fixed bug in COERCE, which now signals an error on coercing a
1232 rational to a bounded real type which excludes the expected
1234 * The compiler is now able to derive types more accurately from the
1235 COERCE and COMPILE functions.
1236 * fixed bug 223: functional binding is considered to be constant
1237 only for symbols in the CL package.
1238 * fixed bug 231: SETQ did not check the type of a variable being set
1239 (reported by Robert E. Brown)
1240 * A new optimization for MAKE-INSTANCE has been included, fixing
1241 various bugs (including relating to :ALLOCATION :CLASS slots and
1242 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1244 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1245 ** As required by ANSI, LOOP now disallows anonymous collection
1246 clauses such as COLLECT I in conjunction with aggregate boolean
1247 clauses such as THEREIS (= I 1);
1248 ** LOOP now signals an error when any variable is reused in the
1249 same loop (including the potentially useful construct analogous
1250 to WITH A = 1 WITH A = (1+ A);
1251 ** IT is only a special loop symbol within the first clause of a
1252 conditional loop clause;
1253 ** LOOP with a typed iteration variable over a hashtable now
1254 signals a type error iff it should.
1255 * fixed some other bugs revealed by Paul Dietz' test suite:
1256 ** FILE-STREAM now names the class previously known as FD-STREAM;
1257 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1258 argument) no longer signals an error;
1259 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1260 of the slot symbol, rather than using the current package
1261 ((:CONC-NAME "") continues to intern the slot's name in the
1263 * incremented fasl file version number, because of the incompatible
1264 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1265 of the new implementation of DEFINE-COMPILER-MACRO.
1267 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1268 * Support for building SBCL for MIPS platforms running in
1269 little-endian mode has now been checked in, and basic
1270 functionality on said platforms verified.
1271 * minor incompatible change: PCL now records the pathname of a file
1272 in which methods and the like are defined, rather than its
1274 * minor incompatible change: TRUENAME now considers the truename of
1275 a file naming a directory to be the pathname with :DIRECTORY
1276 component indicating that directory.
1277 * minor incompatible change: a NAMED clause in the extended form of
1278 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1279 reason for the previous behaviour is unclear.
1280 * more systematization and improvement of CLOS and MOP conformance
1281 in PCL (thanks to Gerd Moellman and Pierre Mai):
1282 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1284 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1285 primary methods with no specializers;
1286 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1288 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1289 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1290 FORWARD-REFERENCED-CLASSes; error reporting on
1291 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1293 ** SXHASH on CLOS instances now uses a slot internal to the
1294 instance to return different numbers on distinct instances,
1295 while preserving the same return value through invocations of
1297 ** DEFMETHOD signals errors when methods with longer incongruent
1298 lambda lists are added to generic functions;
1299 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1300 CLASS, as specified in AMOP;
1301 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1302 on the order returned by the primary method for classes of
1303 class STANDARD-CLASS;
1304 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1305 * fixed some bugs shown by Paul Dietz' test suite:
1306 ** DOLIST puts its body in TAGBODY;
1307 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1309 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1310 value producing form;
1311 ** if more variables are given to PROGV than values, extra
1312 variables are bound and made to have no value;
1313 ** NSUBSTITUTE on list arguments gets the right answer with
1315 ** ELT signals an error of type TYPE-ERROR when the index argument
1316 is not a valid sequence index;
1317 ** LOOP signals (at macroexpansion time) an error of type
1318 PROGRAM-ERROR when duplicate variable names are found;
1319 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1320 ** FUNCALL of special-operators now cause an error of type
1322 ** PSETQ now works as required in the presence of side-effecting
1323 symbol-macro places;
1324 ** NCONC accepts any object as its last argument;
1325 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1327 ** loop-for-as-package does not require a package to be explicitely
1329 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1331 * fixed bug 166: compiler preserves "there is a way to go"
1332 invariant when deleting code.
1333 * fixed bug 172: macro lambda lists with required arguments after
1334 &REST arguments now cause an error to be signalled. (thanks to
1336 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1337 bug. (thanks to Matthew Danish)
1338 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1340 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1341 arguments are lexically rebound. (thanks to Gerd Moellmann and
1343 * fixed bug 194: error messages are now more informative when there
1344 is no primary method applicable in a call to a generic
1345 function. (thanks to Gerd Moellmann)
1346 * fixed bug in command line argument checking (thanks to Julian
1348 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1349 (thanks to Matthew Danish)
1350 * incremented fasl file version number, because of the
1351 SXHASH-related changes in the layout of CLOS data structures
1353 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1354 * minor incompatible change: The runtime (the Unix executable named
1355 "sbcl") is now much pickier about the .core files it will load.
1356 Essentially it now requires .core files to descend from the same
1357 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1358 as the runtime does. (The intent is to prevent the crashes which
1359 can occur, and which can even be reported as mysterious failures,
1360 when people patch the sources or change the build parameters
1361 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1362 sbcl and .core files.)
1363 * fixed bug: VALUES-LIST is no longer optimized away.
1364 * fixed bug 142: The FFI conversion of C string values to Lisp
1365 string values no longer conses excessively. (thanks to Nathan
1366 Froyd porting Raymond Toy's fix to CMU CL)
1367 * began to systematize and improve MOP conformance in PCL (thanks to
1368 Nathan Froyd, Gerd Moellman and Pierre Mai):
1369 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1371 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1372 ** FINALIZE-INHERITANCE is now called on class finalization;
1373 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1374 argument precedence order.
1375 * fixed bug 202: The compiler no longer fails on functions whose
1376 derived types contradict their declared type.
1377 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1378 so it can be non-toplevel.
1379 * The fasl file version number has changed (because of the new
1380 implementation of DEFMACRO).
1381 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1382 safe code, that any length requirement by their type-specifier
1383 argument is valid. The exceptions to this are described in bug
1385 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1386 functions now check the types of their inputs as required by ANSI.
1387 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1388 introduced symbol is DECLAREd to be SPECIAL.
1389 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1390 * fixed bug: :COUNT argument to sequence functions may be negative
1391 * fixed bug: body of DO-SYMBOLS may contain declarations
1392 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1393 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1394 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1395 symbol macro only once
1396 * fixed printing of call frame when argument list is unavailable
1397 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1398 * compiler no longer signals WARNING on unknown keyword
1401 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1402 * A beta-quality port to the mips architecture running Linux,
1403 based on the old CMUCL backend, has been made. It has been tested
1404 on a big-endian kernel, and works sufficiently well to be able to
1405 rebuild itself; it has not been tested in little-endian mode.
1406 * fixed an inconsistency between gencgc.c and purify.c which made
1407 dumping/loading .core files unreliable
1408 * fixed bug 120a: The compiler now deals correctly with IFs where
1409 the consequent is the same as the alternative, instead of
1410 misderiving the return type. (thanks to Alexey Dejneka)
1411 * fixed bug 113: Logical pathnames are now dumpable (the logical
1412 host is resolved at load-time, throwing an error if it is not
1414 * fixed bug 174: FORMAT's error message is slightly clearer when a
1415 non-printing character is used in a format directive.
1416 * fixed several bugs in compiler checking of type declarations, i.e.
1417 violations of the Python "declarations are assertions" principle
1418 (thanks to Alexey Dejneka)
1419 * fixed several bugs in PCL's error checking (thanks to Gerd
1421 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1423 * fixed bug in compilation of functions as first class values
1424 (thanks to Antonio Martinez-Shotton)
1425 * The compiler's handling TYPE-ERRORs which it can prove will
1426 inevitably happen at runtime has been cleaned up and corrected
1427 in several ways. (thanks to Alexey Dejneka)
1428 * improved argument type checking for various basic arithmetic
1429 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1430 lavished on them in the past that they can be compiled in many
1431 ways in different special cases
1432 * fixed bug 181: compiler checks validity of user supplied type
1434 * cleaned up code flushing in optimization: Function calls which
1435 should signal errors for safety purposes (e.g. which ANSI says
1436 should signal errors when their arguments are of incorrect type)
1437 are no longer optimized away.
1438 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1439 * incremented fasl file version number, because changes in the
1440 implementation of sequence functions like COERCE caused
1441 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1442 in old inline expansions) to become undefined. (Actually these
1443 changes were later undone, so we might very well be binary
1444 compatible with 0.7.7 after all, but leaving the version number
1445 incremented seemed like the simplest and most conservative
1448 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1449 * An alpha-quality port to the parisc architecture running Linux,
1450 based on the old CMUCL backend, has been made. This, even more so
1451 than the other backends, should be considered still a work in
1452 progress; known problems include that the Linux kernel in 64-bit
1453 mode does not propagate the correct sigcontext structure to
1454 userspace, and consequently SBCL on a parisc64 kernel will not
1456 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1457 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1458 suppressed.) Also now that the compiler is looking at declarations
1459 in the environment, it checks optimization declarations as well,
1460 and suppresses inlining when (> DEBUG SPEED).
1461 * More fixes have been made to treatment of floating point exception
1462 treatment and other Unix signals. In particular, floating point
1463 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1464 * The detection and handling of control stack exhaustion (infinite
1465 or very deeply nested recursion) has changed. Stack exhaustion
1466 detection is now done by write-protecting pages at the OS level
1467 and applies at all optimization settings; when found, a
1468 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1469 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1470 be caught using IGNORE-ERRORS.
1471 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1472 correctly when transforming recursive LABELS functions to LETs.
1473 (thanks to Alexey Dejneka)
1474 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1475 that are names of constants or global variables.
1476 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1477 alien routines with docstrings.
1478 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1479 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1481 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1482 (thanks to Eric Marsden)
1483 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1484 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1485 * Bug fix: The SPARC backend can now compile functions involving
1486 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1487 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1488 to a functions expecting a PATHNAME-DESIGNATOR.
1489 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1490 lambda lists. (thanks to Alexey Dejneka)
1491 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1492 functions so that EXPORTing the name of the class doesn't cause
1493 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1494 to Antonio Martinez for reporting this)
1495 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1496 constant-folded without failing an assertion. (thanks to Einar
1497 Floystad Dorum for reporting this)
1498 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1499 types are now dealt with more correctly by the compiler.
1500 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1501 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1502 behaviour analogous to RENAME-FILE. This puts its behaviour more
1503 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1505 * The fasl file version number has changed again. (because of the
1506 bug fix involving the names of PCL MAKE-INSTANCE functions)
1508 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1509 * bug fix: Floating point exceptions are treated much more
1510 consistently on the x86/Linux and PPC/Linux platforms.
1511 * Array initialization with :INITIAL-ELEMENT is now much faster for
1512 cases when the compiler cannot open code the array creation, but
1513 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1514 array accesses have also seen a speed increase.
1515 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1516 specified. (This was at the root of some bad interactions between
1517 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1519 * bug fix: Internal error arguments for undefined functions are now
1520 computed correctly on the PPC/Linux platform.
1521 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1522 Raymond Toy's patch for CMU CL)
1523 * Support for the Solaris 9 operating environment has been included
1524 (thanks to Daniel Merritt)
1525 * A very ugly but hopefully complete draft of the missing FFI chapter
1526 of the manual has been created by reformatting the corresponding
1527 CMU CL manual chapter into (currently very ugly and incoherent)
1528 DocBook and bringing it up to date for SBCL behavior. Thus, the
1529 manual is now essentially complete, at least by my extreme
1530 once-and-only-once standards, whereby it's acceptable to refer to
1531 the doc strings of SB-EXT functions as the primary documentation.
1532 * The fasl file version number has changed again, due to cleanup of
1533 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1534 is no longer a static symbol.)
1536 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1537 * SBCL now builds with OpenMCL (version 0.12) as the
1538 cross-compilation host; also, more progress has been made toward
1539 bootstrapping under CLISP.
1540 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1542 * bug 158 fixed: The compiler can now deal with integer loop
1543 increments different from 1; fixing this turned out also to fix
1545 * bug 169 fixed: no more bogus warnings about using lexical bindings
1546 despite the presence of perfectly good SPECIAL declarations (thanks
1547 to David Lichteblau)
1548 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1549 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1550 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1552 * bug 180 fixed: Method combination specifications no longer ignore
1553 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1554 * bug fix: Structure type predicate functions now check their argument
1555 count as they should.
1556 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1557 correctly. (thanks to Pierre Mai)
1558 * minor incompatible change: The --noprogrammer option is deprecated
1559 in favor of the new --disable-debugger option, which is very similar.
1560 (The major difference is that it takes effect at a slightly different
1561 time at startup, causing handling of errors in --sysinit and
1562 --userinit files will be affected differently.) The
1563 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1564 been added to allow this functionality to be controlled from ordinary
1565 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1566 maintainers, who might want to run non-interactive scripts to
1567 build SBCL cores which will later be used interactively.)
1568 * minor incompatible change: The LOAD function no longer, when given
1569 a wild pathname to load, loads all files matching that pathname.
1570 Instead, an error of type FILE-ERROR is signalled.
1572 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1573 * bug 147 fixed: The compiler preserves its block link/count
1574 invariants more correctly now so that it doesn't crash. (thanks
1576 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1578 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1579 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1580 no-value-for-this-character as NIL (as specified by ANSI).
1581 * HOST-NAMESTRING on physical pathnames now returns a string that is
1582 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1583 (thanks to Christophe Rhodes)
1584 * The Alpha port handles icache flushing more correctly. (thanks to
1586 * More progress has been made toward bootstrapping under CLISP. (thanks
1587 to Christophe Rhodes)
1588 * The fasl file format has changed again, because dynamic loading
1589 on OpenBSD (which has non-ELF object files) motivated some cleanups
1590 in the way that foreign symbols are transformed and passed around.
1591 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1592 is no longer treated as whitespace by the reader, but instead as
1593 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1594 |A
\7fB|, instead of A as it used to.
1596 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1597 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1598 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1599 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1600 this as of 0.7.1.45, but was left out of the previous news section
1601 (thanks to Dan Barlow)
1602 * SBCL now runs on the Solaris operating system on SPARC architectures
1603 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1604 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1605 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1606 * SPARC backend cleanups, allowing builds of cores optimized for V8
1607 and V9 SPARCS, and also emission of code targeted to a particular
1608 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1610 * SBCL is closer to bootstrapping under CLISP, thanks to various
1611 fixes by Christophe Rhodes.
1612 * The fasl file format has changed again, to allow the compiler's
1613 INFO database to support symbol macros.
1614 * The user manual (in doc/) is formatted into HTML more nicely.
1615 (thanks to coreythomas)
1616 * The system is smarter about SUBTYPEP relationships, especially
1617 those involving NOT types (including types such as ATOM which are
1618 represented internally using NOT types). Thus SUBTYPEP is less
1619 likely to return (VALUES NIL NIL) in general, and in particular
1620 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1622 * The fasl file format has changed again, because the internal
1623 representation of types now includes a new slot to support the new
1624 SUBTYPEP-of-NOT-types logic.
1625 * (not a change in the main branch of SBCL, but a related prototype
1626 which can hopefully be merged into the main branch of SBCL in the
1627 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1628 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1629 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1630 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1631 dispatch macro character combinations. (thanks to Alexey Dejneka)
1632 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1633 that superficially look like logical namestrings correctly.
1634 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1636 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1637 default supplied-p) for &optional and &key arguments. (thanks to
1640 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1641 * incompatible change: The compiler is now less aggressive about
1642 tail call optimization, doing it only when (> SPACE DEBUG) or
1643 (> SPEED DEBUG). (This is an incompatible change because there are
1644 programs which relied on the old CMU-CL-style behavior to optimize
1645 away their unbounded recursion which will now die of stack overflow.)
1646 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1647 for non-GENCGC systems has been increased to 20M (since that
1648 seems much closer to the likely performance optimum for modern
1649 systems than the old 4M value was)
1650 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1651 and *DEBUG-PRINT-LEVEL*
1652 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1653 of CMU CL's support for SPARC, and various endianness and other
1654 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1655 * new syntactic sugar for the Unix command line: --load foo.bar is now
1656 an alternate notation for --eval '(load "foo.bar")'.
1658 ** The system now detects stack overflow and handles it gracefully,
1659 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1660 optimization settings. (This is a good thing in general, and
1661 its introduction in this version should be particularly timely
1662 for anyone whose code fails because of suppression of tail
1664 ** The system now hunts for the C variable "environ" in a more
1665 devious way, to avoid segfaults when the C library version differs
1666 between compile time and run time. (thanks to Christophe Rhodes)
1667 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1668 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1669 ** The compiler no longer issues bogus style warnings for undefined
1670 classes in the same source file as the DEFCLASSes which defined
1671 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1673 ** fixes in CONDITION class precedence list for undefined function
1674 errors (thanks to Alexei Dejneka)
1675 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1676 correctly. (thanks to Dan Barlow)
1677 ** portability fixes aiming at bootstrapping under CLISP (thanks
1678 to Dave McDonald and Christophe Rhodes)
1679 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1680 ** fixes in type translation and and type inference (thanks to
1682 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1683 ** various fixes in the new ports (thanks to Dan Barlow)
1684 * several changes related to debugging:
1685 ** suppression of tail recursion, as noted above
1686 ** stack overflow detection, as noted above
1687 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1688 is now the default. (For some time encapsulation has been more
1689 reliable than the breakpoint-based :ENCAPSULATE NIL
1690 implementation, at least on X86 systems; and I just noticed that
1691 encapsulation also seems closer to the spirit of the ANSI
1694 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1696 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1697 up properly again. (There was a packaging bug in 0.7.0 which
1698 left their definitions in SB-SYS::LOAD-FOREIGN and
1699 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1700 vital for most things which interface to C-level interfaces,
1701 like extensions working with sockets or databases or
1702 Perl-compatible regexes or whatever, and the need to fix
1703 this bug is the main reason that 0.7.1 was released so
1705 ** DEFGENERIC is now choosier about the methods it redefines, so that
1706 reLOADing a previously-LOADed file containing DEFGENERICs does
1707 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1708 cycle now works as it should. (thanks to Alexey Dejneka)
1709 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1710 fixed by Christophe Rhodes. (He actually submitted this patch
1711 months ago, and I delayed until after 0.7.0.)
1712 ** Bug 111 (internal compiler confusion about runtime checks on
1713 FUNCTION types) was fixed by Alexey Dejneka.
1714 * Some internal cleanups (getting rid of variables which aren't
1715 needed now that the byte interpreter is gone) caused the fasl
1716 file format number to change again.
1718 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1719 * major incompatible change: The default fasl file extension, i.e. the
1720 default extension for files produced by COMPILE-FILE, has changed
1721 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1723 ** There are many changes in the implementation of the compiler.
1724 SBCL is now essentially a compiler-only implementation of ANSI
1725 Common Lisp. EVAL still "interprets" a few special cases, but
1726 almost all the interesting cases are handled by creating
1727 a LAMBDA expression, calling COMPILE on it, then calling
1728 FUNCALL on the result.
1729 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1730 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1731 Since the code is newer, there might still be some new bugs
1732 (though not as many as before Martin Atzmueller's fixes:-). But
1733 the new code is substantially simpler and clearer, and hopefully
1734 any remaining bugs will be simpler, less fundamental, and more
1735 fixable then the bugs in the old code.
1736 ** The revised compiler is still a little unsteady on its feet.
1738 *** The debugging information it produces (particularly the names
1739 of FUNCTION objects) is sometimes much less useful than what
1740 the old compiler produced.
1741 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1742 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1743 within a MACROLET) has been temporarily weakened.
1744 ** There are new compiler optimizations for various functions:
1745 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1746 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1747 *** the math functions TRUNCATE, FLOOR, and CEILING
1748 *** the function-of-all-trades COERCE
1749 Mostly these should be transparent, but there's one
1750 potentially-annoying problem (bug 117): when the compiler
1751 inline-expands a function and does type analysis on the result,
1752 it can create control paths which have type mismatches, and
1753 when it can't prove that those control paths aren't taken,
1754 it will issue WARNINGs about the type mismatches. This is
1755 a particular problem in practice for the new sequence functions.
1756 It's not clear how this should be fixed, and for now, a
1757 workaround is given in the entry for 117 in the BUGS file.
1758 ** (Because of the interaction between the two previous items --
1759 occasional inlining problems and new inline expansions -- some
1760 of the new sequence function optimizations won't really kick in
1761 completely until debugging information, and then inlining, are
1762 straightened out in some future version.)
1763 * minor incompatible changes:
1764 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1765 DIRECTORY no longer implicitly promotes NIL slots of its
1766 pathname argument to :WILD. In particular, when you ask for the
1767 contents of a directory (which you used to be able to do without
1768 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1769 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1770 ** changes in behavior that ANSI explicitly defines to be
1771 implementation dependent:
1772 *** The new compiler-only implementation still conforms with ANSI,
1773 but acts a little different than before. Besides the obvious
1774 changes in performance tradeoffs (that the cost per form passed
1775 to EVAL has gone up, and the cost per form executed by EVAL
1776 has gone down), the behavior of the system changes a little
1777 because there are no longer any interpreted function objects.
1778 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
1779 e.g. doing COMPILE on the output of interactive DEFUN is
1781 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
1783 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
1784 has changed from (:CL) to NIL.
1785 *** The CHAR-NAME of unprintable ASCII characters which, unlike
1786 e.g. #\Newline and #\Tab, don't have names specified in the
1787 ANSI Common Lisp standard, is now based on their ASCII symbolic
1788 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
1789 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
1790 are no longer used for output.
1791 ** changes in internal implementation constants:
1792 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
1793 4 million. (If your application spends a lot of time GCing and
1794 you have a lot of RAM, you might want to experiment with
1795 increasing it even more.)
1796 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
1797 However, almost all old code should still continue to work without
1798 immediate update, as SB-C-CALL is now a (deprecated) nickname
1800 ** Old operator names in the style DEF-FOO are now deprecated in
1801 favor of new corresponding names DEFINE-FOO, for consistency with
1802 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
1803 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
1804 internal symbols, but a few supported extensions like
1805 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
1806 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
1807 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
1808 etc. as you get deeper into recursive calls to the debugger
1809 command loop, instead of the old "5]", "5]]", "5]]]"
1810 sequence. (I was motivated to do this when squabbles between
1811 ILISP and SBCL left me very deeply nested in the debugger. In the
1812 short term, this change will probably provoke more ILISP/SBCL
1813 squabbles, but hopefully it will be an improvement in the long run.)
1814 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
1815 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
1816 function, since declaiming return types involving aliens is
1817 (1) annoyingly messy to do by hand and (2) vital to efficient
1818 compilation of code which calls such functions.
1819 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
1820 longer reexported by the SB-EXT package. They're solely useful
1821 for alien code, so it seems more logical that you should get
1822 them from the SB-ALIEN package, not in SB-EXT.
1823 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
1824 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
1825 features. Instead, the code that they used to control is always
1826 built into the system.
1827 * many other bug fixes
1828 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
1829 advantage of the new EVAL-WHEN stuff and to clean them up in
1830 general, and they are now more ANSI-compliant in a number of
1831 ways. Martin Atzmueller is responsible for a lot of this.
1832 ** Besides the cleanups discussed above, Martin Atzmueller fixed
1834 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
1835 *** correct ERROR type for various file operations
1836 *** some fixes for Lisp streams
1837 *** DEFMETHOD syntax checking
1838 *** changing old weird representation of debug information as
1839 strings (which, among their other deficiencies, don't transform
1840 correctly when you rename packages, and don't change their
1841 print representation when you change things like *PACKAGE*
1842 and *PRINT-LENGTH*) to symbols and lists of symbols
1843 He also made several improvements and fixed several bugs in DESCRIBE.
1844 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
1846 *** misbehavior of WRITE-STRING/WRITE-LINE
1847 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
1848 and several other LOOP problems as well
1849 *** DIRECTORY when similar filenames are present
1850 *** DEFGENERIC with :METHOD options
1851 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
1852 *** bug in the optimization of ARRAY-ELEMENT-TYPE
1853 *** argument ordering in FIND with :TEST option
1854 *** mishandled package designator argument in APROPOS-LIST
1855 *** various problems in the backquote readmacro
1856 *** a bug in APROPOS
1857 *** probably some others that I'm not describing very well here,
1858 since the CVS log documents them by reference to sbcl-devel
1859 messages, and the SourceForge archives aren't working well.:-(
1860 ** Dan Barlow improved the Alpha port (and is making progress on the
1861 PPC port, for those of you who think different).
1862 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
1863 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
1864 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
1865 continues to work on the SPARC port (for those of you in a position
1866 to look down upon our little PC-compatible boxes from a great height).
1867 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
1868 and uses that copy, rather than the current dynamic value, when
1869 it's trying to decide whether to truncate output. Thus e.g.
1870 (let ((*print-lines* 50))
1871 (pprint-logical-block (stream nil)
1873 (let ((*print-lines* 8))
1874 (print (aref possiblybigthings i) stream)))))
1875 should now truncate the logical block only at 50 lines, instead of
1876 often truncating it at 8 lines, as it did before.
1877 * The doc/cmucl/ directory, containing old CMU CL documentation
1878 from the time of the fork, is no longer part of the base system.
1879 SourceForge has shut down its anonymous FTP service, and with it
1880 my original plan for distributing the old CMU CL documentation
1881 there. For now, if you need these files you can download an old
1882 SBCL source release and extract them from it.
1883 * The fasl file version number changed again, for dozens of reasons,
1884 some of which are apparent above.
1886 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
1887 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
1888 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
1889 patch, so that DISASSEMBLE output is much nicer.
1890 * The code in the SB-PROFILE package now seems reasonably stable.
1891 I still haven't decided what the final interface should look like
1892 (I'd like PROFILE to interact cleanly with TRACE, since both
1893 facilities use function encapsulation) but if you have a need
1894 for profiling now, you can probably use it successfully with
1895 the current CMU-CL-style interface.
1896 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
1897 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
1898 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
1899 link now returns the dangling link itself, and for similar
1900 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
1901 link itself. (In these cases the old code signalled an error and
1902 looped endlessly, respectively.) Thus, DIRECTORY now works even
1903 in the presence of dangling and cyclic symbolic links.
1904 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
1905 is now a supported extension again, since the consensus on
1906 sbcl-devel was that it can be useful for ordinary development
1907 work, not just for debugging SBCL itself.
1908 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
1909 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
1910 that currently-defined functions might be redefined later with
1911 different return types.
1912 * Hash tables can be printed readably, as inspired by CMU CL code
1913 of Eric Marsden and SBCL code of Martin Atzmueller.
1914 * better error handling in CLOS method combination, thanks to
1915 Martin Atzmueller porting Pierre Mai's CMU CL patches
1916 * more overflow fixes for >16Mbyte I/O buffers
1917 * A bug in READ has been fixed, so that now a single Ctrl-D
1918 character suffices to cause end-of-file on character streams.
1919 In particular, now you only need one Ctrl-D at the command
1920 line (not two) to exit SBCL.
1921 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
1923 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
1924 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
1925 does the right thing.
1926 * The implementation of some type tests, especially for CONDITION
1927 types, is now tidier and maybe faster, due to CMU CL code
1928 originally by Douglas Crosher, ported by Martin Atzmueller.
1929 * Some math functions have been fixed, and there are new
1930 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
1931 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
1932 * (There are also some new optimizers in contrib/*-extras.lisp. Those
1933 aren't built into sbcl-0.6.13, but are a sneak preview of what's
1934 likely to be built into sbcl-0.7.0.)
1935 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
1936 CL, ported to SBCL by Martin Atzmueller)
1937 * DESCRIBE now gives more information in some cases. (Pierre Mai's
1938 patch to CMU CL, ported to SBCL by Martin Atzmueller)
1939 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
1940 * There's a new slam.sh hack to shorten the edit/compile/debug
1941 cycle for low-level changes to SBCL itself, and a new
1942 :SB-AFTER-XC-CORE target feature to control the generation of
1943 the after-xc.core file needed by slam.sh.
1944 * minor incompatible change: The ENTRY-POINTS &KEY argument to
1945 COMPILE-FILE is no longer supported, so that now every function
1946 gets an entry point, so that block compilation looks a little
1947 more like the plain vanilla ANSI section 3.2.2.3 scheme.
1948 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
1949 returns the number of bytes consed since the system started,
1950 rather than the number consed since the first time the function
1951 was called. (The new definition parallels ANSI functions like
1952 CL:GET-INTERNAL-RUN-TIME.)
1953 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
1954 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
1955 supported. Now DIRECTORY always does the abstract Common-Lisp-y
1956 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
1957 * Fasl file version numbers are now independent of the target CPU,
1958 since historically most system changes which required version
1959 number changes have affected all CPUs equally. Similarly,
1960 the byte fasl file version is now equal to the ordinary
1963 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
1964 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
1965 is no longer recognized. I apologize for this, because it was
1966 listed in SB-EXT as a supported extension, but I found that
1967 its existing behavior was poorly specified, as well as incorrectly
1968 specified, and it looked like too much of a mess to straighten it
1969 out. I have enough on my hands trying to get ANSI stuff to work..
1970 * many patches ported from CMU CL by Martin Atzmueller, with
1971 half a dozen bug fixes in pretty-printing and the debugger, and
1972 half a dozen others elsewhere
1973 * fixed bug 13: Floating point infinities are now supported again.
1974 They might still be a little bit flaky, but thanks to bug reports
1975 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
1976 as flaky as they were.
1977 * The --noprogrammer command line option is now supported. (Its
1978 behavior is slightly different in detail from what the old man
1979 page claimed it would do, but it's still appropriate under the
1980 same circumstances that the man page talks about.)
1981 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
1982 are now supported, and enabled by default. Thus, the compiler can
1983 handle many floating point and complex operations much less
1984 inefficiently. (Thus e.g. you can implement a complex FFT
1986 * The compiler now detects type mismatches between DECLAIM FTYPE
1987 and DEFUN better, and implements CHECK-TYPE more correctly, and
1988 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
1989 thanks to patches from Martin Atzmueller.
1990 * various fixes to make the cross-compiler more portable to
1991 ANSI-conforming-but-different cross-compilation hosts (notably
1992 Lispworks for Windows, following bug reports from Arthur Lemmens)
1993 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
1994 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
1995 fixed thanks to Pierre Mai's CMU CL patches.
1996 * fixes to keep the system from overflowing internal counters when
1997 it tries to use i/o buffers larger than 16M bytes
1998 * fixed bug 45a: Various internal functions required to support
1999 complex special functions have been merged from CMU CL sources.
2000 (When I was first setting up SBCL, I misunderstood a compile-time
2001 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2002 * improved support for type intersection and union, fixing bug 12
2003 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2004 more obscure bugs as well
2005 * some steps toward byte-compiling non-performance-critical
2006 parts of the system, courtesy of patches from Martin Atzmueller
2007 * Christophe Rhodes has made some debian packages of sbcl at
2008 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2009 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2010 stable, but are nonetheless usable. When he's ready, I'd be happy
2011 to add them to the SourceForge "File Releases" section. (And if
2012 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2013 * new fasl file format version number (because of changes in
2014 internal representation of (OR ..) types to accommodate the new
2015 support for (AND ..) types, among other things)
2017 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2018 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2020 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2022 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2023 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2024 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2025 * DESCRIBE now works on structure objects again.
2026 * Most function call argument type mismatches are now handled as
2027 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2028 know whether the function will be redefined before the call is
2029 executed. (The compiler could flag local calls with full WARNINGs,
2030 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2031 it doesn't keep track of enough information to know whether calls
2032 are local in this sense.)
2033 * Compiler output is now more verbose, with messages truncated
2034 later than before. (There should be some supported way for users
2035 to override the default verbosity, but I haven't decided how to
2036 provide it yet, so this behavior is still controlled by the internal
2037 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2038 src/compiler/ir1util.lisp.)
2039 * Fasl file format version numbers have increased again, because
2040 support for the Gray streams extension changes the layout of the
2041 system's STREAM objects.
2042 * The Gray subclassable streams extension now works, thanks to a
2043 patch from Martin Atzmueller.
2044 * The full LOAD-FOREIGN extension (not just the primitive
2045 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2046 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2047 but like most other programs, it defaults to copying the Unix
2048 environment from the original process instead of starting the
2049 new process in an empty environment.
2050 * Extensions which manipulate the Unix environment now support
2051 an :ENVIRONMENT keyword option which doesn't smash case or
2052 do other bad things. The CMU-CL-style :ENV option is retained
2053 for porting convenience.
2054 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2055 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2057 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2059 * A patch from Martin Atzmueller seems to have solved the SIGINT
2060 problem, and as far as we know, signal-handling now works cleanly.
2061 (If you find any new bugs, please report them!)
2062 * The system no longer defaults Lisp source file names to types
2063 ".l", ".cl", or ".lsp", but only to ".lisp".
2064 * The compiler no longer uses special default file extensions for
2065 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2066 seems to expect a single default extension for all compiled code,
2067 and there's no compelling reason to try to stretch the standard
2068 to allow two different extensions.) Instead, byte-compiled files
2069 default to the same extension as native-compiled files.
2070 * Fasl file format version numbers have increased again, because
2071 a rearrangement of internal implementation packages made some
2072 dumped symbols in old fasl files unreadable in new cores.
2073 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2074 many fewer weird special cases.
2075 * Bug #17 (differing COMPILE-FILE behavior between logical and
2076 physical pathnames) has been fixed, and some related misbehavior too,
2077 thanks to a patch from Martin Atzmueller.
2078 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2079 by Tim Moore, ported to SBCL by Martin Atzmueller.
2080 * Martin Atzmueller fixed several filesystem-related problems,
2081 including bug #36, in part by porting CMU CL patches, which were
2082 written in part by Paul Werkowski.
2083 * More compiler warnings in src/runtime/ are gone, thanks to
2084 more patches from Martin Atzmueller.
2085 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2088 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2090 * DESCRIBE now works on CONDITION objects.
2091 * The debugger now handles errors which arise when trying to print
2092 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2094 * The build system now uses an additional file, customize-target-features.lisp,
2095 to allow local modifications to the target *FEATURES* list. (The point of
2096 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2097 debugging features enabled, without having to worry about propagating it
2098 into everyone's system when I do a "cvs update".) When no
2099 customize-target-features.lisp file exists, the target *FEATURES* list
2100 should be constructed the same way as before.
2101 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2102 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2103 warn about behavior which is undefined under the ANSI spec. Note: This
2104 is specified by ANSI, but it's not very popular with programmers.
2105 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2106 macro in the SBCL sources for an example of a workaround which you
2107 might use to make portable ANSI-standard code which does what you want.
2108 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2109 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2110 when it's used as a non-toplevel form. (This is required in order
2111 to implement the DEFCONSTANT-EQX macro.)
2112 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2113 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2114 funny things, due to bugs in the implementation of EVAL-WHEN
2115 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2116 non-toplevel DEFCONSTANTs are uncommon.)
2117 * The core file version number and fasl file version number have been
2118 incremented, because the old noncompliant DEFCONSTANT behavior involved
2119 calling functions which no longer exist, and because I also took the
2120 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2121 * fixed bug 1 (error handling before read-eval-print loop starts), and
2122 redid debugger restarts and related debugger commands somewhat while
2124 ** The QUIT debugger command is gone, since it did something
2125 rather different than the SB-EXT:QUIT command, and since it never
2126 worked properly outside the main toplevel read/eval/print loop.
2127 Invoking the new TOPLEVEL restart provides the same functionality.
2128 ** The GO debugger command is also gone, since you can just invoke
2129 the CONTINUE restart directly instead.
2130 ** The TOP debugger command is also gone, since it's redundant with the
2131 FRAME 0 command, and since it interfered with abbreviations for the
2133 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2135 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2136 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2137 some porting work by Martin Atzmueller)
2138 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2139 with a boatload of patches which he ported to SBCL. Now that those
2141 ** The system tries to make sure that its low-priority messages
2142 are prefixed by semicolons, to help people who like to use
2143 syntax highlighting in their ILISP buffer. (This patch
2144 was originally due to Raymond Toy.)
2145 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2146 patches originally written by Raymond Toy.
2147 ** The compiler understands coercion between single-value and
2148 multiple-VALUES type expressions better, getting rid of some very
2149 weird behavior, thanks to patches originally by Robert MacLachlan
2150 and Douglas Crosher.
2151 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2152 lambda lists, thanks to a patch originally by Pierre Mai.
2153 ** The system no longer bogusly warns about "abbreviated type
2155 ** The compiler gets less confused by inlining and RETURN-FROM,
2156 thanks to some patches originally by Tim Moore.
2157 ** The system no longer hangs when dumping circular lists to fasl
2158 files, thanks to a patch originally from Douglas Crosher.
2159 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2160 undefined function error.
2161 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2162 in structure slot initforms) for now, documented workaround instead:-|
2163 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2164 * fixed bug 5: added stubs for various Gray stream functions called
2165 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2166 installed, at least appropriate type errors are generated
2167 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2168 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2169 consistently in DEFMETHOD forms.
2170 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2171 it doesn't seem to affect SBCL after all
2172 * The C runtime system now builds with better optimization and many
2173 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2175 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2177 * The system is now under CVS at SourceForge (instead of the
2178 CVS repository on my home machine).
2179 * The new signal handling code has been tweaked to treat register
2180 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2181 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2182 downstream, e.g. in debug-int.lisp, has implicit dependencies
2183 on the unsignedness of integer representation of machine words,
2184 and that caused the system to bomb out with infinite regress
2185 when trying to recover from type errors involving signed values,
2186 e.g. (BUTLAST '(1 2 3) -1).)
2187 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2188 (This was one of the bugs Peter Van Eynde reported back in July.)
2189 * The system now uses code inspired by Colin Walters' O(N)
2190 implementation of MAP (from the cmucl-imp@cons.org mailing
2191 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2192 inline the MAP operation, and there is more than one
2193 sequence argument to the MAP call (so that it can't just
2194 do ETYPECASE once and for all based on the type of the
2195 single sequence argument). (The old non-inline implementation
2196 of the general M-argument sequence-of-length-N case required
2197 O(M*N*N) time when any of the sequence arguments were LISTs.)
2198 * The QUIT :UNIX-CODE keyword argument has been renamed to
2199 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2200 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2202 * Raymond Wiker's patches to port dynamic loading from Linux to
2203 FreeBSD have been added.
2204 * The BUGS file is now more nearly up to date, thanks in large part
2205 to Martin Atzmueller's review of it.
2206 * The debugger now flushes standard output streams before it begins
2207 its output ("debugger invoked" and so forth).
2208 * The core version number and fasl file version number have both
2209 been incremented, because of incompatible changes in the layout
2211 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2212 used to not be called for a saved Lisp image.)
2213 * Martin Atzmueller's version of a patch to fix a compiler crash,
2214 as posted on sbcl-devel 13 September 2000, has been installed.
2215 * Instead of installing Martin Atzmueller's patch for the
2216 compiler transform for SUBSEQ, I deleted the compiler transform,
2217 and transforms for some similar consing operations.
2218 * A bug in signal handling which kept TRACE from working on OpenBSD
2220 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2221 away by constant folding
2222 * The system now defines its address space constants in one place
2223 (in the Lisp sources), and propagates them automatically elsewhere
2224 (through GENESIS and the sbcl.h file). Therefore, patching the
2225 address map is less unnecessarily tedious and error-prone. The
2226 Lisp names of address space constants have also been systematized.
2227 * CVS tags like dollar-Header-dollar have been removed from
2228 the sources, because they have never saved me trouble and
2229 they've been source of trouble working with patches and other
2230 diff-related operations.
2231 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2232 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2234 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2236 * The system has been ported to OpenBSD.
2237 * The system now compiles with a simple "sh make.sh" on the systems
2238 that it's supported on. I.e., now you no longer need to tweak
2239 text in the target-features.lisp-expr and symlinks in src/runtime/
2240 by hand, the make.sh takes care of it for you.
2241 * The system is no longer so grossly inefficient when compiling code
2242 involving vectors implemented as general (not simple) vectors (VECTOR T),
2243 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2244 which dares to use the various sequence functions on non-simple
2245 vectors, takes less of a performance hit.
2246 * There is now a primitive type predicate VECTOR-T-P
2247 to test for the (VECTOR T) type, so that e.g.
2248 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2249 can now be compiled with some semblance of efficiency. (The old code
2250 turned the type declaration into a full call to %TYPEP at runtime!)
2251 * AREF on (VECTOR T) is still not fast, since it's still compiled
2252 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2253 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2254 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2255 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2256 without making full calls to SUBTYPEP at runtime.
2257 (Some analogous efficiency issues for non-simple vectors specialized to
2258 element types other than T, or for non-simple multidimensional arrays,
2259 have not been addressed. They could almost certainly be handled the
2260 same way if anyone is motivated to do so.)
2261 * The changes in array handling break binary compatibility, so
2262 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2263 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2264 instead of (VALUES T T).
2265 * By following the instructions that Dan Barlow posted to sbcl-devel
2266 on 2 July 2000, I was able to enable primitive dynamic object
2267 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2268 functionality is not implemented (since it calls ld to resolve
2269 library references automatically, requiring RUN-PROGRAM for its
2270 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2271 try to resolve library references) is now supported.
2272 * The system now flushes the standard output streams when it terminates,
2273 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2274 them at several other probably-convenient times, e.g. in each pass of
2275 the toplevel read-eval-print loop, and after evaluating a form given
2276 as an "--eval" command-line option. (These changes were motivated by a
2277 discussion of stream flushing issues on cmucl-imp in August 2000.)
2278 * The source transform for TYPEP of array types no longer assumes
2279 that an array whose element type is a not-yet-defined type
2280 is implemented as an array of T, but instead punts, so that the
2281 type will be interpreted at runtime.
2282 * There is now some support for cross-compiling in make.sh: each of
2283 the phases of make.sh has its own script. (This should be transparent
2284 to people doing ordinary, non-cross-compile builds.)
2285 * Since my laptop doesn't have hundreds of megabytes of memory like
2286 my desktop machine, I became more motivated to do some items on
2287 my to-do list in order to reduce the size of the system a little:
2288 ** Arrange for various needed-only-at-cold-init things to be
2289 uninterned after cold init. To support this, those things have
2290 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2291 symbols with such names are now uninterned after cold init).
2292 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2293 fasl files for cold load.
2294 ** Remove the old compiler structure pooling code (which used to
2295 be conditional on the target feature :SB-ALLOC) completely.
2296 ** Redo the representation of some data in cold init to be more compact.
2297 (I also looked into supporting byte compiled code at bootstrap time,
2298 which would probably reduce the size of the system a lot, but that
2299 looked too complicated, so I punted for now.)
2300 * The maximum signal nesting depth in the src/runtime/ support code has
2301 been reduced from 4096 to 256. (I don't know any reason for the very
2302 large old value. If the new smaller value turns out to break something,
2303 I'll probably just bump it back up.)
2304 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2306 * Many, many bugs reported by Peter Van Eynde have been added to
2307 the BUGS list; some have even been fixed.
2308 * While enabling dynamic object file loading, I tried to make the
2309 code easier to understand, renaming various functions and variables
2310 with less ambiguous names, and changing some function calling
2311 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2312 * While trying to figure out how to do the OpenBSD port, I tried to
2313 clean up some of the code in src/runtime/. In particular, I dropped
2314 support for non-POSIX signal handling, added various comments,
2315 tweaked the code to reduce the number of compilation warnings, and
2316 renamed some files to increase consistency.
2317 * To support the new automatic configuration functionality in make.sh,
2318 the source file target-features.lisp-expr has been replaced with the
2319 source file base-target-features.lisp-expr and the machine-generated
2320 file local-target-features.lisp-expr.
2321 * fixed a stupid quoting error in make.sh so that using CMU CL
2322 "lisp -batch" as cross-compilation host works again
2324 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2326 * DESCRIBE no longer tries to call itself recursively to describe
2327 bound/fbound values, so that it no longer fails on symbols which are
2328 bound to themselves (like keywords, T, and NIL).
2329 * DESCRIBE now works on generic functions.
2330 * The printer now prints less-screwed-up representations of closures
2331 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2332 * A private symbol is used instead of the :EMPTY keyword previously
2333 used to mark empty slots in hash tables. Thus
2334 (DEFVAR *HT* (MAKE-HASH-TABLE))
2335 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2336 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2337 now does what ANSI says that it should. (You can still get
2338 similar noncompliant behavior if bang on the hash table
2339 implementation with all the symbols you get back from
2340 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2341 This breaks binary compatibility, since tests for equality to
2342 :EMPTY are wired into things like the macroexpansion of
2343 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2345 * There's now a minimal placeholder implementation for CL:STEP,
2346 as required by ANSI.
2347 * An obscure bug in the interaction of the normal compiler, the byte
2348 compiler, inlining, and structure predicates has been patched
2349 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2350 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2352 * Missing ordinary arguments in a macro call are now detected even
2353 when the macro lambda list contains &KEY or &REST.
2354 * The debugger no longer complains about encountering the top of the
2355 stack when you type "FRAME 0" to explicitly instruct it to go to
2356 the top of the stack. And it now prints the frame you request even
2357 if it's the current frame (instead of saying "You are here.").
2358 * As specified by ANSI, the system now always prints keywords
2359 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2361 * The default initial SIZE of HASH-TABLEs is now smaller.
2362 * Type information from CLOS class dispatch is now propagated
2363 into DEFMETHOD bodies, so that e.g.
2364 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2366 is now basically equivalent to
2367 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2368 (DECLARE (TYPE SINGLE-FLOAT X))
2370 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2371 operation, without having to do run-time type dispatch.
2372 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2373 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2374 * Since I don't seem to be making big file reorganizations very often
2375 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2376 is overflowing my ability to conveniently back them up), I've finally
2377 checked the system into CVS. (The CVS repository is on my home system,
2378 not at SourceForge -- putting it on SourceForge might come later.)
2379 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2380 high-level GC-NOTIFY-FOO functions send their output. (There's
2381 still very little control of where low-level verbose GC functions
2382 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2383 less than it used to -- the GC-NOTIFY-FOO functions are now under
2384 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2385 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2386 in only one place in the source code, and propagates it automatically
2387 everywhere that it's needed. Thus e.g. when I bump the version from
2388 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2389 * The C source files now include boilerplate legalese and documentation
2390 at the head of each file (just as the Lisp source files already did).
2391 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2392 to his page will be replaced with a link to his new CLiki service.
2394 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2396 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2397 * The build process now looks for GNU make under the default name "gmake",
2398 instead of "make" as it used to. If GNU make is not available as "gmake"
2399 on your system, you can change this default behavior by setting the
2400 GNUMAKE environment variable.
2401 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2402 can build without error under CMU CL.
2404 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2406 * There is now a partial SBCL user manual (with some new text and some
2407 text cribbed from the CMU CL manual).
2408 * The beginnings of a profiler have been added (starting with the
2409 CMU CL profiler and simplifying and cleaning up). Eventually the
2410 main interface should be through the TRACE macro, but for now,
2411 it's still accessed through vaguely CMU-CL-style functions and macros
2412 exported from the package SB-PROFILE.
2413 * Some problems left over from porting CMU CL to the new
2414 cross-compilation bootstrap process have been cleaned up:
2415 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2416 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2417 part when getting rid of the compiler *BACKEND* stuff.)
2418 ** The value of *NULL-TYPE* was screwed up, because it was
2419 being initialized before the type system knew the final
2420 definition of the 'NULL type. This screwed up several key
2421 optimizations in the compiler, causing inefficiency in all sorts
2422 of places. (I found it because I wanted to understand why
2423 GET-INTERNAL-RUN-TIME was consing.)
2424 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2425 PROCLAIM FTYPE information. Unfortunately this broke binary
2426 compatibility again, since now the forms output by DEFGENERIC
2427 to refer to functions which didn't exist in 0.6.3.
2428 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2429 can use the new (as of 0.6.3) transform for SOME into MAP into
2431 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2432 values to (INTEGER 0 1000000), so that the time code will no longer
2433 occasionally get blown up by Linux returning 1000000 microseconds
2434 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2435 its output conform to the ANSI spec. (Alas, this makes its output
2436 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2437 * A full call to MAP NIL with a single sequence argument no longer conses.
2438 * fixes to problems pointed out by Martin Atzmueller:
2439 * The manual page no longer talks about multiprocessing as though
2440 it were currently supported.
2441 * The ILISP support patches have been removed from the distribution,
2442 because as of version 5.10.1, ILISP now supports SBCL without us
2443 having to maintain patches.
2444 * added a modified version of Raymond Toy's recent CMU CL patch for
2445 EQUALP comparison of HASH-TABLE
2447 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2449 * The system still can't cross-compile itself with
2450 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2451 entails), but at least it can compile more of itself that way
2452 than it used to be able to, and various buglets which were uncovered
2453 by trying to cross-compile itself that way have now been fixed.
2454 * This release breaks binary compatibility again. This time
2455 at least I've incremented the FASL file format version to 2, so that the
2456 problem can be detected reliably instead of just causing weird errors.
2457 * various new style warnings:
2458 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2459 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2460 ** using the lexical binding of a variable named in the *FOO* style
2461 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2462 as specified by ANSI.
2463 * *RANDOM-STATE* is no longer automatically initialized from
2464 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2465 default behavior of the system is to repeat its behavior every time
2466 it's run. If you'd like to change this behavior, you can always
2467 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2468 old convention there was no comparably easy way to get the system to
2469 repeat its behavior every time it was run.
2470 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2471 FTYPE declarations has been removed, in favor of their ANSI
2472 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2473 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2474 the types of their sequence arguments can be determined at compile time.
2475 This is done through a new open code expansion for MAP which eliminates
2476 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2477 argument types can be determined at compile time.
2478 * The optimizer now transforms COERCE into an identity operation when it
2479 can prove that the coerced object is already of the correct type. (This
2480 can be a win for machine generated code, including the output of other
2481 optimization transforms, such as the MAP transform above.)
2482 * Credit information has been moved from source file headers into CREDITS.
2483 * Source file headers have been made more standard.
2484 * The CASE macro now compiles without complaining even when it has
2487 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2489 * (Note that the way that the PCL macroexpansions were rewritten
2490 to accommodate the change in DEFGENERIC below breaks binary
2491 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2492 not run under sbcl-0.6.2. Once we get out of alpha releases,
2493 i.e. hit release 1.0.0, we'll probably try to maintain binary
2494 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2495 and sbcl-1.4.4. Until then, however, it might be fairly common
2496 for maintenance releases to break binary compatibility.)
2497 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2499 * The reporting of unhandled signals has been changed to print some
2500 explanatory text as well as the report form. (Previously only
2501 the report form was printed.)
2502 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2503 it defines, so that the compiler no longer issues undefined function
2504 warnings for compiled-but-not-yet-loaded generic functions.
2505 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2506 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2507 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2508 section of the ANSI spec are supported.
2509 * The "" nickname for the "KEYWORD" package has been removed.
2510 The reader still handles symbol tokens which begin with a package marker
2511 as keywords, but it doesn't expose its mechanism for doing so in the
2512 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2513 * The system now issues STYLE-WARNINGs for contradictory TYPE
2514 proclamations. (Warnings for contradictory FTYPE proclamations would
2515 be nice too, but those can't be done usefully unless the type system
2516 is made smarter about FUNCTION types.)
2517 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2518 systematized, so that "*target-*.lisp is supposed to exist only on the
2519 target and imply that there's a related file which exists on the
2520 host, and *host-*.lisp is supposed to exist only on the host and imply
2521 that there's a related file which exists on the target. This involves a
2522 lot of renaming. Hopefully the acute confusion caused by the renaming
2523 will be justified by the reduction in chronic confusion..
2524 ** runtime-type.lisp -> early-target-type.lisp
2525 ** target-type.lisp -> late-target-type.lisp
2526 ** early-host-format.lisp -> early-format.lisp
2527 ** late-host-format.lisp -> late-format.lisp
2528 ** host-error.lisp -> misc-error.lisp
2529 ** early-error.lisp -> early-target-error.lisp
2530 ** late-error.lisp -> late-target-error.lisp
2531 ** host-defboot.lisp -> early-defboot.lisp
2532 ** code/misc.lisp -> code/target-misc.lisp
2533 ** code/host-misc.lisp -> code/misc.lisp
2534 ** code/numbers.lisp -> code/target-numbers.lisp
2535 ** code/early-numbers.lisp -> numbers.lisp
2536 ** early-host-type.lisp -> early-type.lisp
2537 ** late-host-type.lisp -> late-type.lisp
2538 ** host-typep.lisp -> typep.lisp
2539 ** load.lisp -> target-load.lisp
2540 ** host-load.lisp -> load.lisp
2541 ** host-disassem.lisp -> disassem.lisp
2542 ** host-insts.lisp -> insts.lisp
2543 ** byte-comp.lisp -> target-byte-comp.lisp
2544 ** host-byte-comp.lisp -> byte-comp.lisp
2545 ** host-signal.lisp -> signal.lisp
2546 ** host-defstruct.lisp -> defstruct.lisp
2547 ** late-target-type.lisp -> deftypes-for-target.lisp
2548 Furthermore, several other previously target-only files foo.lisp (e.g.
2549 hash-table.lisp and random.lisp) have been split into a target-and-host
2550 foo.lisp file and a target-only target-foo.lisp file, with their key type
2551 definitions in the target-and-host part, so that the cross-compiler will
2552 know more about target types.
2553 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2554 gone away. In their place are various *BACKEND-FOO* variables
2555 corresponding to the slots of the old structure.
2556 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2557 into the target SBCL has been fixed.
2558 * The chill.lisp system for loading cold code into a running SBCL
2560 * Support for the CMU CL "scavenger hook" extension has been removed.
2561 (It was undocumented and unused in the CMU CL sources that SBCL was
2562 derived from, and stale in sbcl-0.6.1.)
2563 * Various errors in the cross-compiler type system were detected
2564 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2565 (enabling various consistency checks). Many of them were fixed,
2566 but some hard problems remain, so the compiler is back to
2567 running without *TYPE-SYSTEM-INITIALIZED* for now.
2568 * As part of the cross-compiler type system cleanup, I implemented
2569 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2570 * I have started adding UNCROSS calls throughout the type system
2571 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2572 on cross-compiler input files will be able to go away, and various
2574 * CONSTANTP now returns true for quoted forms (as explicitly required
2577 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2579 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2580 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2581 (MAKE-LIST -1). In the longer term, it ought to become true
2582 that declarations are assertions even at SAFETY 1. For now, it's not
2583 quite true even at SAFETY 3, but it's at least more nearly true..
2584 (Note that this change seems to increases the size of the system by
2585 O(5%) and to decrease the speed of the compiler by 20% or more.)
2586 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2587 for the problem of printing dozens of lines of distracting information
2588 about low-level system machinery as part of the top stack frame
2589 on entry to the debugger when an undefined function was called.
2590 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2591 is not reset to COMMON-LISP-USER.
2592 * Compilation of stuff related to dyncount.lisp has been made conditional
2593 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2594 smaller. The various dyncount-related symbols have been moved into
2595 a new "SB-DYNCOUNT" package.
2596 * tty-inspect.lisp has been renamed to inspect.lisp.
2597 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2598 feature has gone away. (When we eventually port to other flavors of
2599 libc and/or Unix, we'll try to make the differences between flavors
2600 invisible at the user level.)
2601 * Various other *FEATURES* tags, and/or their associated conditionals,
2602 have been removed if obsolescent, or given better documentation, or
2603 sometimes given more-mnemonic names.
2605 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2607 * tidied up "make.sh" script
2608 * tidied up system directory structure
2609 * better "clean.sh" behavior
2610 * added doc/FOR-CMUCL-DEVELOPERS
2611 * many many small tweaks to output format, e.g. removing possibly-confusing
2612 trailing #\. character in DESCRIBE-INSTANCE
2613 * (EQUALP #\A 'A) no longer signals an error.
2614 * new hashing code, including EQUALP hashing
2615 * tidied up Lisp initialization and toplevel
2616 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2617 * command line argument processing
2618 * added POSIX-GETENV function to deal with Unix-ish environment variables
2619 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2620 terminating SBCL on EOF
2621 * non-verbose GC by default
2622 * There is no more "sbcl" shell script; the sbcl file is now the C
2623 runtime executable (just like CMU CL).
2624 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2626 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2627 symbol and package information as Lisp native symbol and package objects
2628 instead of strings naming symbols and strings naming packages. This way,
2629 whenever packages are renamed (as in warm init), debug information is
2630 transformed along with everything else.
2631 * tweaked the optimization policy declarations which control the building
2632 of SBCL itself. Now, among other things, the system no longer saves
2633 source location debugging information. (This helps two problems at once
2634 by reducing SBCL size and by keeping SBCL from trying to look for its
2635 sources -- which may not exist -- when reporting errors.)
2636 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2637 debugging and testing purposes
2638 * cleaned up printing, making the printer call PRINT-OBJECT for
2639 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2640 methods, giving nearly-ANSI behavior
2641 * converted almost all special variables to use *FOO* naming convention
2642 * deleted PARSE-TIME functionality, since it can be done portably
2643 * moved some files out of cold init into warm init
2644 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2646 * regularized formatting of source files
2647 * added an install.sh script
2648 * fixed ridiculous memory usage of cross-compiler by making
2649 compiler/alloc.lisp not try to do pooling unless it can hook
2650 itself into the GC of the cross-compilation host. Now the system
2651 builds nicely on my old laptop.
2652 * added :SB-ALLOC in target-features.lisp-expr
2653 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2654 was not implemented)
2655 * re-did condition handling and note reporting in the compiler. Notes
2656 are no longer handled by signalling conditions. Style warnings
2657 and warnings are handled more correctly and reported in such a way
2658 that it's easy to find one or the other in your output (so that you
2659 can e.g. figure out which of many problems caused COMPILE-FILE to
2661 * changed the severity of several compiler warnings from full WARNING
2662 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2663 compiler note reporting so that it doesn't use the condition system
2664 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2665 COMPILE-FILE command)
2666 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2667 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2668 no longer supported, since their implementation was deeply intertwingled
2669 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2670 * removed bogus "support" for compiler macros named (SETF FOO), and
2671 removed the compiler macro for SETF INFO (but only after making a fool
2672 of myself on the cmucl-imp mailing list by posting a bogus patch for
2673 DEFINE-COMPILER-MACRO..)
2674 * Compiled files containing forms which have side effects on the Lisp
2675 reader (such as DEFPACKAGE forms) are now handled more correctly.
2676 (Compiler queuing of top level lambdas has been suppressed by setting
2677 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2678 * deleted various currently-unused source files, e.g. gengc.lisp. They
2679 may be added back at some point e.g. when porting to other architectures,
2680 but until they are it's distracting to distribute them and to try to
2682 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2683 there were so many of them they're just distractions, and UNCROSS is
2684 known to be able to handle the current sources
2685 * moved PROFILE functionality into TRACE, so that it will be clear
2686 how the wrapping and unwrapping of functions when you profile them
2687 interacts with the wrapping and unwrapping of functions when you
2688 trace them. (Actually, the functionality isn't there yet, but at least
2689 the interface specification is there. Hopefully, the functionality will
2690 arrive with some future maintenance release.)
2691 * removed host-oops.lisp
2692 * changed signature of QUIT function to allow UNIX-CODE argument
2693 * fixed READ-SEQUENCE bug
2694 * tweaked verbose GC output so that it looks more like the progress
2695 output that ANSI specifies for functions like LOAD
2696 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2697 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob