1 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
3 and READ-FROM-STRING all now return a primary value of NIL if
4 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
5 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
6 (reported by Bruno Haible for CMUCL)
8 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
9 * enhancement: saving cores with foreign code loaded is now
10 supported on x86/NetBSD and sparc/Linux in addition to the previously
12 * bug fix: on some platforms repeated installations caused multiple
13 copies of HTML documentation to be installed -- should not happen
14 any more. (reported by Stefan Scholl)
15 * bug fix: parsing self-recursive alien record types multiple times
16 no longer causes infinite recursion. (reported by Thomas F. Burdick,
17 original patch by Helmut Eller for CMUCL)
18 * bug fix: stack-exhaustion detection works now on NetBSD as well.
19 (thanks to Richard Kreuter)
20 * bug fix: defining classes whose accessors are methods on existing
21 generic functions in other (locked) packages no longer signals
22 bogus package lock violations. (reported by François-René Rideau)
23 * bug fix: special variables as DEFMETHOD parameters no longer have
24 associated bogus type declarations. (reported by David Wragg and
26 * bug fix: read-write consistency on streams of element-type
27 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
28 * bug fix: redefiniton of the only method of a generic function with
29 no DEFGENERIC no longer emits a full WARNING. In addition,
30 redefinition of generic functions with no DEFGENERIC to an
31 incompatible lambda list now signals an error. (thanks to Zach
33 * bug fix: DEFGENERIC now works even when there's a function of the
34 same name in an enclosing lexical environment. (thanks to Zach
36 * fixed compiler failure, caused by instrumenting code during
37 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
38 * optimization: added loop analysis and improved register allocation
39 * fixed some bugs revealed by Paul Dietz' test suite:
40 ** POSITION on displaced vectors with non-zero displacement
41 returns the right answer.
42 ** (SIMPLE-STRING) is a valid type specifier for sequence
44 ** *PRINT-LEVEL* handling for slotless structures is pedantically
46 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
47 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
49 ** The justification version of the FORMAT ~< directive treats
50 non-zero minpad parameter correctly.
52 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
53 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
54 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
55 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
56 the supported interface.
57 * new feature: Single-stepping of code compiled with DEBUG 2 or
58 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
59 * new feature: saving cores with foreign code loaded is now
60 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
61 Timothy Moore's work for CMUCL)
62 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
63 parameters to * instead of NIL if no initform is supplied.
64 (reported by Johan Bockgaard)
65 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
66 correctly when FUNCALL appears as the car of the form. Note:
67 despite this FUNCALL forms are not currently subject to
68 compiler-macro expansion. (port of Raymond Toy's fix for the
69 same from CMUCL, reported by Johan Bockgaard)
70 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
71 (thanks for Teemu Kalvas)
72 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
73 case instead of terminating the iteration (thanks for Julian
74 Squires, Sean Champ and Raymond Toy)
75 * bug fix: incorrect expansion of defgeneric that caused a style
76 warning. (thanks for Zach Beane)
77 * bug fix: slot accessor effective method computation works properly
78 for classes with multiple non-standard applicable methods on
79 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
80 * on x86 compiler supports stack allocation of results of LIST and
81 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
82 CMUCL implementation by Gerd Moellmann)
83 * fixed some bugs revealed by Paul Dietz' test suite:
84 ** FORMAT strings with both the ~<~:;~> form of the justification
85 directive and pretty-printing directives cause an error.
87 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
88 * incompatible change: the internal functions
89 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
90 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
91 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
92 instead of the old functions.
93 * new feature: on platforms where "dladdr" is available foreign
94 function names now appear in backtraces. (based on Helmut Eller's
96 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
97 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
99 * documentation: ASDF manual is now distributed with SBCL.
100 * bug fix: SBCL can now load its contributed modules with REQUIRE
101 even if the system-provided entries have been removed from
102 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
104 * bug fix: backtraces involving undefined functions or assembly
105 routines are more informative. (thanks to Brian Downing)
106 * bug fix: mutually referent alien structures now work correctly.
107 (reported by Rick Taube)
108 * bug fix: structures defined by WITH-ALIEN can be referred to
109 within other definitions in the same WITH-ALIEN.
110 * bug fix: division operators (MOD, TRUNCATE and the like) with
111 constant zero divisors and integer dividends no longer generate
113 * bug fix: provide default methods for INPUT-STREAM-P and
114 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
115 * bug fix: improve the detection and resolution of MOP metacycles
116 (where effective method computation depends on the generic function
117 having its effective method computed). (reported by Bruno Haible)
118 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
119 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
120 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
121 * bug fix: pathnames with relative directory components can be
122 represented relative to default pathnames.
123 * optimization: in taking the GCD of bignums, reduce the two bignums
124 to approximately the same size (using Euclid's algorithm) before
125 applying the more sophisticated binary GCD. (thanks to Juho
127 * optimization: COUNT on bitvectors now operates word-at-a-time.
128 * optimization: ASH with a positive, but not necessarily constant,
129 (leftwards) shift, when in a modular context, is compiled to a
131 * fixed some bugs revealed by Paul Dietz' test suite:
132 ** FORMAT variable parameters ("~V<char>") are defaulted properly
133 if the corresponding argument is NIL.
134 ** FORMAT directives accepting a minpad parameter treat negative
136 ** literal commas as character parameters to FORMAT directives are
138 ** literal spaces directly after ~<Newline> directives within a
139 format-logical-block (~:< ~@:>) do not induce :FILL-style
140 conditional newlines.
141 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
142 as specified: it no longer includes conditional newlines).
143 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
145 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
146 :PER-LINE-PREFIX argument does not evaluate to a string.
148 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
149 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
150 the manual for details; for now, package locks can be disabled by
151 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
152 if no major problems are found then it is likely that they will be
153 compiled in unconditionally.
154 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
155 unsupported operators on all platforms. To load a shared library
156 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
157 object file, link it into a shared library outside of SBCL and
158 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
160 * bug workaround: ROOM T and the GC were not working together
161 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
162 reporting facility aren't preserved. That reporting has been
163 disabled, so now until and unless someone figures out how to make it
164 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
165 * minor incompatible change: as threatened around sbcl-0.8.0, the
166 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
167 The symbols are also exported from SB-PCL for backwards
168 compatibility, but more so than before SB-PCL should be treated as
169 an implementation-internal package.
170 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
172 * the SB-SPROF contrib now works on (most) non-x86 architectures.
173 It is known as of this release not to work on the Alpha, however.
174 * fixed bug #167: errors signalled due to illegal syntax in method
175 bodies are now more legible.
176 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
177 designators and can hence be used with TYPEP.
178 * fixed bug #333: CHECK-TYPE now ensures that the type error
179 signalled, if any, has the right object to be accessed by
180 TYPE-ERROR-DATUM. (reported by Tony Martinez)
181 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
182 5.1.2.3 for multiple-value place subforms. (reported by Kalle
184 * fixed bug #334: programmatic addition of slots using specialized
185 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
186 and :ALLOCATION :CLASS slots.
187 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
188 float exponents. (rereported by Peter Seibel)
189 * fixed a bug: #\Space (and other whitespace characters) are no
190 longer considered to be macro characters in standard syntax by
192 * fixed bug: initialization of condition class metaobjects no longer
193 causes an instance of the condition to be created. (reported by
195 * fixed bug: it is now possible to have slots such that
196 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
197 description is neither :INSTANCE nor :CLASS.
198 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
199 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
200 SLOT-VALUE-USING-CLASS), and no longer causes errors with
201 non-standard SLOT-DEFINITION-ALLOCATION values.
202 * fixed bugs: various race conditions handling exiting threads.
203 CL-PPCRE's thread torture test now passes.
204 * fixed arguably-a-bug: GC time proportional to number of threads in
205 system even when most of them are idle
206 * optimization: improved performance of BIT and SBIT on bit-vectors.
207 * .fasl file incompatibility: The fasl file version number has
208 been incremented because of changes associated with package locks.
210 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
211 * minor incompatible change: the system no longer provides
212 optimization hints (conditions which are TYPEP
213 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
214 mode; these hints are still emitted when higher SPEED optimization
216 * new contrib module: a sampling profiler (profiling by statistical
217 sampling, rather than by instrumenting functions) is available as
218 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
219 * the behaviour of the standard function ED is now customizeable by
220 third parties through a hook variable: see ED's documentation
221 string for information on the protocol.
222 * the compiler no longer emits efficiency notes for (FUNCALL X)
223 when the type of X is uncertain under default optimization
225 * fixed bug 276: mutating a binding of a specialized parameter to a
226 method to something that is not TYPEP the specializer is now
228 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
229 exhibit the required behaviour on the x86 platform. (thanks to
230 Peter van Eynde, Eric Marsden and Bruno Haible)
231 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
232 even for difficult arguments. (reported by Peter Graves)
233 * fixed bug 141a: the backquote printer now descends quoted
235 * fixed another bug in backquote printing: no more destructive
236 modification of the form's list structure. (reported by Brian
238 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
239 move between its address being taken and the call to
240 interrupt_thread, fixing a crashing race condition.
241 * the SB-POSIX contrib implementation has been adjusted so that it
242 no longer exhibits ridiculously poor performance when constructing
243 instances corresponding to C structs.
245 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
246 * minor incompatible change: the sb-grovel contrib now treats C
247 structures as alien (in the sense of SB-ALIEN) objects rather than
248 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
249 has implications for memory management of client code
250 (sb-grovel-returned objects must now be manually managed) and for
251 type safety (alien objects now have full types).
252 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
253 used to control emission of compiler diagnostics, rather than the
254 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
255 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
256 quality should be considered deprecated.
257 * install.sh now installs the user manual as well
258 * (not quite a new documentable feature, but worth considering in
259 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
260 beginnings of a semantically meaningful condition hierarchy is
261 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
263 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
264 designator as the defaults argument.
265 * fixed bug: Displaced arrays whose displaced-to array has become
266 too small now cause ARRAY-DIMENSION to signal an error, providing
267 for safer bounds-checking. (reported by Bruno Haible)
268 * fixed bug: DEFCLASS slot definitions with identical :READER and
269 :WRITER names now signal a reasonable error. (reported by Thomas
271 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
273 * fixed bug: Invalid slot specification errors now print correctly.
274 (thanks to Zach Beane)
275 * fixed bug 320: Shared to local slot value transfers in class
276 redefinitions now happen corrently from superclasses as
277 well. (reported by Bruno Haible)
278 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
280 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
281 improper lists correctly. (reported by Bruno Haible)
282 * fixed bug 313: source-transform for <fun-name> was erroneously
283 applied to a call of a value of a variable with name <fun-name>.
284 (reported by Antonio Menezes Leitao)
285 * fixed bug 307: The obsolete instance protocol ensures that
286 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
287 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
288 remove dead unknown-values globs from the middle of the stack.
289 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
290 easier to resume long computations after using *BREAK-ON-SIGNALS*
291 to diagnose and fix failures. (thanks to Nikodemus Siivola)
292 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
293 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
294 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
295 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
296 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
298 * fixed a (fairly theoretical) bug in string printing: if
299 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
300 does not have array-element-type equal to the most general string
302 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
303 function name. (thanks to Nikodemus Siivola)
304 * fixed bug: compile-time format string checker failed on
305 non-closed ~{. (reported by Thomas F Burdick)
306 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
307 don't warn on legal loop code involving more than one aggregate
308 boolean. (thanks to Nikodemus Siivola)
309 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
310 in keyword position to MAKE-PACKAGE was not being reported as
312 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
313 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
315 * fixed bugs 280 and 312: the checking for multiple definitions in a
316 file is less likely to become confused by uses of inline
318 * fixed bug: the #S reader macro performs the keyword coercion
319 specified for slot names. (reported by Kalle Niemitalo)
320 * fixed bug: lambda lists may contain symbols whose names start with
321 & but are not lambda-list-keywords; their occurrence triggers a
323 * fixed bug 321: define-method-combination argument lambda lists do
324 not cause invalid code to be generated when &optional or &aux
325 variables have default values. (reported by Bruno Haible)
326 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
327 have CLOS classes; this appears also to have fixed reported
328 instability in stack exhaustion detection.
329 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
330 MUFFLE-WARNING when no associated restart is present is now
332 * optimization: rearranged the expansion of various defining macros
333 so that each expands into only one top-level form in a
334 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
336 * optimization: used a previously little-used slot in symbols to
337 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
339 * fixed some bugs revealed by Paul Dietz' test suite:
340 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
342 ** Fixed an optimization bug related to inheritance of initforms
343 from local to shared slots.
344 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
345 ** CAST optimizer forgot to flush argument derived type.
346 ** print/read consistency on floats is now orders of magnitude
347 more likely. (thanks also to Bruno Haible for a similar report
349 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
350 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
351 for objects of type REAL. Make it so.
352 ** SXHASH is specified (infelicitously) to respect similarity,
353 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
354 it so. (thanks to Markus Ziegler)
355 ** on the Alpha, the compiler succeeds in compiling functions
356 returning a known number of arguments greater than 63.
357 ** fixed handling of invalid NIL arguments in keyword position
359 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
361 ** provided a readably-printable representation for RANDOM-STATE
363 ** ensured that pathnames, where they have a namestring, always
364 print using #P"..." syntax.
366 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
367 * Support for the forthcoming 2.0 version of the NetBSD kernel
368 running on x86 hardware has been added. (thanks to Perry
369 E. Metzger most immediately, and others for their past work)
370 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
371 current release version; SBCL's OpenBSD support had been broken
372 since about the time of OpenBSD's switch to ELF binary format.)
373 * [placeholder for DX summary]
374 ** user code with &REST lists declared dynamic-extent, under high
375 speed or space and low safety and debug optimization policy.
376 * The manual has been converted to Texinfo format and the debugger
377 chapter from the cmucl manual has been added.
378 * A facility has been added to extract documentation strings from
379 sbcl and store them as Texinfo-formatted snippets for inclusion in
380 the manual (via Texinfo's @include directive)
381 * bug fix: compiler emitted division in optimized DEREF. (thanks for
382 the test case to Dave Roberts)
383 * bug fix: multidimensional simple arrays loaded from FASLs had fill
384 pointers. (reported by Sean Ross)
385 * bug fix: PROFILE output is printed nicely even for large numerical
386 values. (thanks to Zach Beane)
387 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
388 greater than 32 handle EOF correctly.
389 * bug fix: on X86 an immediate argument of the IMUL instruction is
390 correctly printed in disassembly. (thanks to Lutz Euler)
391 * bug fix: class slots in redefined classes preserve their old
392 values. (thanks to Bruno Haible and Nikodemus Siivola)
393 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
394 succeeds. (reported by Marco Baringer)
395 * fixed some bugs revealed by Paul Dietz' test suite:
396 ** READ-SEQUENCE now works on ECHO-STREAMs.
397 ** RATIONALIZE works more according to its specification. (thanks
400 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
401 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
402 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
403 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
404 should matter to you only if you rebind the printer control
405 variables and then find you want different bindings in the
406 debugger than in the ordinary execution of your program.)
407 * The runtime build system has been tweaked to support building
408 (on SPARC/SunOS) using a C compiler which invokes Sun's own
409 assembler and linker. (thanks to Nikodemus Siivola)
410 * Unbound, undefined, undeclared variables now trigger full
411 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
412 more often programmer error than deliberate exploitation of undefined
414 * optimization: the hash algorithm for strings has changed to one
415 that is less vulnerable to spurious collisions. (thanks to Juho
417 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
418 needless bounds checking. (thanks to Juho Snellman)
419 * optimization: implemented multiplication as a modular
420 (UNSIGNED-BYTE 32) operation on the PPC backend.
421 * fixed some bugs revealed by Paul Dietz' test suite:
422 ** ADJUST-ARRAY now copies the datum in a zero rank array if
424 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
425 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
426 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
428 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
430 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
432 ** ECHO-STREAMs no longer attempt to echo the end of file value to
433 their output stream on EOF from read.
434 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
435 have been read to end-of-file.
436 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
438 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
439 description of determination of which consecutive characters
441 ** Printing the "Space" character with escaping on now yields "#\\ ",
442 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
443 ** Reading floating-point numbers with *READ-BASE* set to a number
444 less than 10 works correctly.
445 ** Reading floating-point numbers with *READ-BASE* set to a number
446 more than 10 works correctly.
447 ** Printing with *PRINT-READABLY* targets the standard readtable, not
448 the readtable currently in effect.
450 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
451 * minor incompatible change: parsing of namestrings on a physical
452 (Unix) host has changed; numbers after the final #\. in a
453 namestring are no longer interpreted as a version field. This is
454 intented to be largely invisible to the user, except that the
455 meaning of the namestring "*.*.*" has changed: it now refers to a
456 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
457 should usually be replaced by
458 (make-pathname :name :wild :type :wild :version :wild)
459 with the added benefit that this is more likely to be portable.
460 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
461 option to OPEN now signals an error if the file being opened
462 exists; this may have an impact on existing code.
463 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
464 signals received, on the PowerPC platforms (both Linux and
465 Darwin). (thanks to Pierre Mai for pointing out the location of
467 * several fixes on OS X: The system now builds and runs cleanly on
468 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
469 (thanks to Brian Mastenbrook)
470 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
471 second-resolution: integer multiples of 1/3600 between -24 and 24.
472 (thanks to Vincent Arkesteijn)
473 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
474 type when called with 1 argument; PEEK-CHAR checked type of
475 PEEK-TYPE only after having read first character from a
476 stream. (reported by Peter Graves)
477 * bug fix: the garbage collector now has much better locality
478 behaviour, and in particular no longer treats all memory as being
479 exhausted when many small objects point to each other in a deeply
481 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
482 recognized as being TYPEP their class.
483 * bug fix: the PUSHNEW documentation string has been corrected.
484 (thanks to Vincent Arkesteijn)
485 * bug fix: defaulting of the value for the last of an atypically
486 large number of multiple values being bound was not being
487 performed correctly on the Alpha or PPC platforms
488 * optimization: implemented multiplication as a modular
489 (UNSIGNED-BYTE 32) operation on the x86 backend.
490 * optimization: SEARCH on simple-base-strings can now be open-coded.
491 (see also contrib/compiler-extras.lisp for inspiration for
492 teaching the compiler about the Boyer-Moore algorithm).
493 * value, returned by MAX (and MIN) called with several EQUALP, but
494 not EQL, arguments now does not depend on compiler settings.
495 * fixed some bugs revealed by Paul Dietz' test suite:
496 ** in stack analysis liveness information is propagated from
497 non-local entry points.
498 ** pathwise CAST removing failed when the CAST node did not start
500 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
501 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
503 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
504 host is already defined.
505 ** RENAME-FILE works on streams instead of signalling an internal
507 ** PEEK-CHAR uses the current readtable when determining whether
508 or not a character is whitespace.
509 ** MERGE-PATHNAMES handles the case when the pathname does not
510 specify a name while the default-pathname specifies a version.
511 ** Pathnames now stand a better chance of respecting print/read
513 ** Attempting to use standardized file system operators with a
514 pathname with invalid :DIRECTORY components signals a
516 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
518 ** DIRECTORY on logical pathnames is more correct.
519 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
520 signal a TYPE-ERROR if their argument is not a stream.
521 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
522 designator argument does not designate a stream.
523 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
524 examining the synonym.
525 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
527 ** OPEN and WITH-OPEN-STREAM allow opening streams with
528 element-type larger than ([UN]SIGNED-BYTE 32).
530 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
531 * When built with the :SB-FUTEX feature, threaded builds now take
532 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
533 for faster/more reliable mutex and condition variable support.
534 * Incompatible change (but one you probably shouldn't have been using
535 anyway): the interface and code for arbitrating between multiple
536 threads in the same user session has been redesigned.
537 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
538 error when called without an explicit environment argument.
539 (thanks to Nikodemus Siivola)
540 * bug fix: buffered :DIRECTION :IO streams are less likely to become
541 confused about their position. (thanks to Adam Warner and Gerd
543 * bug fix: Pretty printing backquoted forms with unquotations in the
544 argument list position of various code constructs such as LAMBDA
545 now works correctly. (reported by Paul Dietz)
546 * bug fix: Pretty printing unquotations no longer loses all
547 stream position information.
548 * optimization: performance of string output streams is now less
549 poor for multiple small sequence writes.
550 * optimization: performance of CSUBTYPEP in the presence of complex
551 expressions involving CONS and NOT many times has been improved.
552 (reported by Paul Dietz)
553 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
555 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
556 streams for the REPL, for the debugger, and so on. (thanks to
558 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
559 * fixed some bugs revealed by Paul Dietz' test suite:
560 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
561 is ignored if it is too small, rather than propagating through
562 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
563 ** extremely complex negations of CONS types were not being
564 sufficiently canonicalized, leading to inconsistencies in
566 ** VALUES tranformer lost derived type.
568 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
569 * fixed a bootstrapping bug: the build process no longer assumes
570 that the various BOOLE-related constants have the same value in
571 host and target lisps. (noted by Paul Dietz' test suite on an
572 SBCL binary built from CLISP)
573 * The system can now be dynamically linked on the MIPS platform,
574 which enables dynamic loading of foreign code from Lisp. (thanks
575 to Ralf Baechle for discussions on the MIPS ABI)
576 * The system now records debugging information for its own source
577 files in a filesystem-position-independent manner, relative to
578 the "SYS" logical host.
579 * fixed a compiler bug: MV-LET convertion did not check references
580 to the "max args" entry point. (reported by Brian Downing)
581 * tweaked disassembly notes to be less confident about proclaiming
582 some instruction as an LRA. (thanks to Brian Downing)
583 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
584 now each have their own history, command character, and other
585 characteristics. (thanks to David Lichteblau)
586 * fixed some bugs revealed by Paul Dietz' test suite:
587 ** compiler failure in compiling LOGAND expressions including a
589 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
590 shift greater than 32.
591 ** FLUSH-DEST did not mark blocks for type check regeneration.
592 ** HANDLER-CASE failed to accept declarations in handler clauses
593 in some circumstances.
595 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
596 * New code in contrib/sb-introspect (still probably not entirely
597 stable yet) provides some support for smart Lisp development
598 environments like SLIME.
599 * The conditions signalled for errors occurring when loading .fasl
600 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
601 in a way which should help ASDF recover gracefully.
602 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
603 stuff has been cleaned up. If you code contrib/ stuff, this might
604 affect you, and you can look at contrib/README, contrib/STANDARDS,
605 and/or the 0.8.4.27 diff to check.
606 * In full calls the compiler now does not generate checks for declared
607 argument types for all arguments.
608 * various threading fixes
609 ** and some experimental patches which didn't make it into
610 the main tree for this release, but which are shipped in
611 contrib/experimental-thread.patch as a possible fix for some
612 failures (deadlock, spinning...) in GC-intensive multithreaded
614 * fixed PPC build problem (source code incompatibility of different
615 library versions): added offsetof() hackery which attempts to divine
616 where glibc maintainers put uc_mcontext today
617 * fixed bug 282: compiler does not trust type assertions while passing
618 arguments to a full call.
619 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
620 &OPTIONAL VALUES type parameter.
621 * fix bug 214: algorithm for noting rejected templates is now more
622 similar to that of template seletion. (also reported by rydis on
624 * fixed bug 141b: printing backquoted information readably and prettily
625 inserts a space where necessary.
626 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
627 (CHARACTER 10) are now reported as errors, rather than propagated
628 as unknown types. (reported by piso on #lisp)
629 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
630 with values NIL and :ERROR. (thanks to Milan Zamazal)
631 * fixed bug 191c: CLOS now does proper keyword argument checking as
632 described in CLHS 7.6.5 and 7.6.5.1.
633 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
634 longer raise an error; further, using a list as a for-as-arithmetic
635 counter now raises a meaningful error.
636 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
637 now understood by sequence creation functions such as MAKE-SEQUENCE
639 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
640 a STRING-INPUT-STREAM.
641 * compiler enhancement: SIGNUM is now better able to derive the type
643 * type declarations inside WITH-SLOTS are checked. (reported by
645 * fixed some bugs revealed by Paul Dietz' test suite:
646 ** incorrect optimization of TRUNCATE for a positive first
647 argument and negative second.
648 ** compiler failure in let-convertion during flushing dead code.
649 ** compiler failure while deriving type of TRUNCATE on an
650 interval, containing 0.
651 ** ASH of a negative bignum by a negative bignum count now returns
653 ** intersection of CONS types now canonicalizes properly, fixing
654 inconsistencies in SUBTYPEP.
656 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
657 * incompatible change: The --disable-debugger command line
658 option now clobbers the debugger at a more fundamental
659 level, by redefining #'INVOKE-DEBUGGER instead of by
660 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
661 is specified by ANSI to ignore *DEBUGGER-HOOK* and
662 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
663 enter the debugger REPL and then suffer recursive errors
664 because *DEBUG-IO* is also messed up in --disable-debugger mode;
665 while under the new system, BREAK in --disable-debugger mode
666 terminates the system just as an unhandled error would.
667 * fixed compiler performance when processing loops with a step >1;
668 * bug fix: DOCUMENTATION now retrieves generic function
669 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
670 support has been systematized, and now supports the methods
671 specified by ANSI, along with a default method and a method for
672 slot documentation. (reported by Nathan Froyd)
673 * bug fix: effective methods associated with a generic function are
674 no longer cached over a change of that generic function's method
675 combination. (reported by Andreas Fuchs)
676 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
677 names a non-existent directory. (thanks to Andreas Fuchs)
678 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
679 the PPC platform, lead to stack corruption; this has been fixed.
680 (reported by Rainer Joswig)
681 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
682 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
683 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
684 arithmetic in general, is now much more reliable on the PPC
686 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
687 platform now returns the right answer.
688 * optimization: restored some effective method precomputation in
689 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
690 precomputation is now tunable.
691 * optimization: compiler-internal data structure use has been
692 reviewed, and changes have been made that should improve the
693 performance of the compiler by about 20%.
694 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
695 simple-base-strings and simple-bit-vectors is improved.
696 * optimization: the optimization of 32-bit logical and arithmetic
697 functions introduced in version 0.8.3 on the x86 has been
698 implemented on the mips, ppc and sparc platforms; an
699 implementation of the same facility, but for 64-bit arithmetic,
700 has been added for the alpha.
701 * microoptimization: the compiler is better able to make use of the
702 x86 LEA instruction for multiplication by constants.
703 * bug fix: in some situations compiler did not report usage of
704 generic arithmetic in (SPEED 3) policy.
705 * bug 145b fix: compiler used wrong type specifier while converting
706 MEMBER-types to numeric.
707 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
709 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
710 index argument now works properly on the Alpha platform.
711 * bug fix: floating point exception treatment on the Alpha platform
713 * bug fix: FILE-POSITION works much better on string input and
714 output streams. (thanks to Nikodemus Siivola)
715 * bug fix: many threading/garbage collection symptoms sorted.
716 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
717 might be pseudo-atomic.
718 * internal change: Stopping for GC is now done with signals not
719 ptrace. GC is now done in whichever thread wanted it, instead of
721 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
723 * bug fix: result form in DO is not contained in the implicit
725 * incompatible change: ICR structure is changed; the value part of
726 CONTINUATION is now called LVAR; corresponding functions are
727 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
728 * added type deriver for ISQRT (thanks to Robert E. Brown).
729 * bug fix: better support for loading from the command line when an
730 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
732 * fixed some bugs revealed by Paul Dietz' test suite:
733 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
734 ** ROUND and FROUND now give the right answer when given very
735 small float arguments.
736 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
738 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
739 ** (GCD 0 <negative-integer>) returned <negative-integer>.
740 ** LCM should return a non-negative integer.
741 ** PARSE-INTEGER returned the index of a terminator instead of the
742 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
743 ** PARSE-INTEGER returned an incorrect index being applied to a
745 ** LCM with two arguments of 0 returns 0 rather than signalling
747 ** unsigned addition of a 32-bit constant with the high bit set no
748 longer causes an internal compiler error on the x86.
749 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
750 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
751 with negative last argument.
752 ** byte specifiers with zero size and position no longer cause
753 an error during type derivation.
754 ** bignum multiplication on the Alpha platform now returns the
756 * porting: The system now builds on SuSE AMD64, although it still
757 generates a 32-bit binary.
758 * .fasl file incompatibility: The fasl file version number has
759 been incremented (because of the changes to internal compiler
760 data structures referred to above).
762 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
763 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
764 more accurately, on the Darwin kernel running on PowerPC hardware.
765 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
766 * Compiler code deletion notes now signal a condition of type
767 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
768 an associated MUFFLE-WARNING restart.
769 * The compiler now performs limited argument count validation of
770 constant format strings in FORMAT, and where appropriate in ERROR,
771 CERROR and WARN. (thanks to Gerd Moellmann)
772 * New ASDF-INSTALL contrib can be used for automatic download and
773 installation of third-party Lisp code from CCLAN or other sites
775 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
776 which forces another thread to execute a function supplied by the
778 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
779 now accept and act upon their :ELEMENT-TYPE keyword argument.
780 (reported by Martin Atzmueller, Edi Weitz)
781 * bug fix: FILE-POSITION now accepts position designators up to
782 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
783 is the greater. (thanks to Patrik Nordebo)
784 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
785 Kalle Olavi Niemitalo)
786 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
787 printable. (reported by Eric Marsden)
788 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
789 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
790 * x86 bug fix in control stack exhaustion checking: now shows backtrace
791 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
792 (thanks to Stig Sandoe)
793 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
794 UNREAD-CHAR now correctly includes the unread character in the
795 target sequence. (thanks to Gerd Moellmann)
796 * bug fix in threaded builds: the system can now be suspended and
797 resumed by shell job control with minimal disruption.
798 * bug fixes in times and timezones >2038AD
799 * better handling of "where is GNU make?" problem in build scripts
800 (thanks to Nikodemus Siivola)
801 * new optimization: inside a named function any reference to a
802 function with the same name is considered to be a self-reference;
803 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
804 optimization quality.
805 * new optimization on x86: logical functions and + now have
806 optimized (UNSIGNED-BYTE 32) versions, which are automatically
807 used when the result is truncated to 32 bits.
808 * VALUES declaration is partially enabled.
809 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
810 * fixed some bugs revealed by Paul Dietz' test suite:
811 ** The system now obeys the constraint imposed by
812 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
813 types form a lattice under type intersection.
814 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
815 ** ASSOC now ignores NIL elements in an alist.
816 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
817 and (1+ MOST-POSITIVE-FIXNUM) answers.
818 ** The addition of a method with invalid qualifiers to a generic
819 function does not cause an error to be signalled immediately;
820 a warning is signalled, and the error is generated only on
821 calling the generic function.
822 * changed .fasl file version number, in part to add type codes for
823 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
824 obscure ANSI requirements
826 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
827 * fixed bug 148: failure to inline-expand a local function left
828 garbage, confusing the compiler.
829 * fixed bugs 3cd: structure slot readers perform type check if the
830 slot can have an invalid value (i.e. it is either not initialized
831 or can be written with a less specific slot writer).
832 * bug fix: the compiler now traps array references to elements off
833 the end of an array; previously, the bounds checking in some
834 circumstances could go off-by-one.
835 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
837 * type declarations for array element types now obey the description
838 on the CLHS page "Declaration TYPE", as per discussions on
839 sbcl-help around 2003-05-08. This means that a declaration
840 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
841 declaration, all references to BAR will be asserted or assumed
842 (with THE, so dependent on compiler policy) to involve objects of
843 type FOO. Note that no such declaration is implied in
844 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
845 * declared types of functions from the "Conditions"
846 chapter. (reported by Paul Dietz)
847 * bug fix: CERROR accepts a function as its first argument.
848 * bug fix: NTH an NTHCDR accept a bignum as index
849 arguments. (reported by Adam Warner)
850 * optimization: character compare routines now optimize comparing
851 against a constant character. (reported by Gilbert Baumann)
852 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
853 argument now works properly on the MIPS platform.
854 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
855 * repeated evaluation of the same DEFSTRUCT, a slot of which is
856 declared to have a functional type, does not cause an error
858 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
859 many :DEFAULT-INITARGS. (reported by Istvan Marko)
860 * fixed bug: if last continuation of a deleted block has a
861 destination, this destination should be deleted too. (reported by
863 * fixed a bug in the bootstrap process: the host compiler's values
864 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
865 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
866 test case from Patrik Nordebo)
867 * improved the ability of the disassembler on the PPC platform to
868 provide helpful disassembly notes.
869 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
870 the class in more cases than previously.
871 * bug fix: FILE-POSITION now understands :START and :END for
872 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
873 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
874 8) data. (thanks to David Lichteblau)
875 * bug fix: it is possible to add a method to a generic function
877 * bug fix: reader failed to signal END-OF-FILE inside an
878 object representation. (reported by Nikodemus Siivola)
879 * fixed some bugs revealed by Paul Dietz' test suite:
880 ** LAST and [N]BUTLAST should accept a bignum.
881 ** condition slot accessors are methods.
882 ** (VECTOR NIL) is a subtype of STRING.
884 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
885 * minor incompatible change: some nonsensical specialized lambda
886 lists (used in DEFMETHOD) which were previously ignored now signal
888 * minor incompatible change: the system is now aware of the types of
889 variables in the COMMON-LISP package, and will signal errors for
890 most violations of these type constraints (where previously they
891 were silently accepted).
892 * minor incompatible change: COMPILE-FILE now uses the freedom
893 afforded (ANSI 3.2.2.3) to use derived function types for
894 functions defined in the same file. This also permits the system
895 to warn on static type mismatches and function
896 redefinition. (Currently it does not work with high DEBUG level.)
897 * minor incompatible change: VALUES declaration is disabled.
898 * When issuing notes, the compiler now signals a condition of type
899 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
900 restart for use in user handlers. It is expected that the
901 COMPILER-NOTE condition will eventually become a condition
902 supertype to a hierarchy of note types, which will then be
903 handleable in a similar fashion. However, at the moment, no such
904 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
905 but it's an implementation detail, not a classification for the
907 * Changes in type checking closed the following bugs:
908 ** type checking of unused values (192b, 194d, 203);
909 ** template selection based on unsafe type assertions (192c, 236);
910 ** type checking in branches (194bc).
911 * A short form of VALUES type specifier has ANSI meaning (it has
912 increased the number of situations when SBCL cannot perform type
914 * fixed bug in DEFSTRUCT: once again, naming structure slots with
915 keywords or constants is permissible.
916 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
917 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
918 classes. (thanks to Antonio Martinez)
919 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
920 outputs FRESH-LINE or TERPRI, and no longer converts its stream
921 argument to a pretty-print stream. Instead, it leaves any such
922 operations to DESCRIBE-OBJECT methods.
923 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
925 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
926 lambda lists. (thanks to David Lichteblau)
927 * bug fix: Defining a generic function with a :METHOD-CLASS being a
928 subclass of STANDARD-METHOD no longer causes stack exhaustion.
929 (thanks to Gerd Moellmann)
930 * fixed bug 246: increased compilation speed of long
931 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
933 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
935 * DEFCONSTANT now throws a condition of type
936 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
937 constant to a non-EQL value; CONTINUE and ABORT restarts
938 respectively change and preserve the value.
939 * fixed bug 63: The code walker, part of the implementation of CLOS,
940 is now better at handling symbol macros.
941 * bug fix: There is no longer an internal implementation type named
942 CL:LENGTH. (reported by Raymond Toy)
943 * bug fix: In macro-like defining macros/special operators the
944 implicit block does not enclose the lambda list.
945 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
946 enclosed in parentheses) are not suitable as type specifiers, and
947 their use properly signals an error now.
948 * bug fix: An argument count mismatch for a type specifier in code
949 being compiled no longer causes an unhandled error at compile
950 time, but signals a compile-time warning.
951 * fixed simple vector readable printing
952 * bug fix: DESCRIBE takes more care over whether the class
953 precedence list slot of a class is bound before accessing it.
954 (reported by Markus Krummenacker)
955 * bug fix: FORMATTER can successfully compile pretty-printer format
956 strings which use variants of the ~* directive inside.
957 * bug fix: SEARCH now applies its TEST predicate to the elements of
958 the arguments in the correct order. (thanks to Wolfhard Buss)
959 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
960 in type inference. (thanks to Robert E. Brown)
961 * bug fix: Reading in symbols with an explicit package name of ""
962 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
963 * fixed some bugs revealed by Paul Dietz' test suite:
964 ** NIL is now allowed as a structure slot name.
965 ** Arbitrary numbers, not just REALs, are allowed in certain
966 circumstances in LOOP for-as-arithmetic clauses.
967 ** Multiple class redefinitions before slot access no longer
969 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
970 association between the name and a class.
971 ** Generic functions with non-standard method-combination and over
972 five methods all of which return constants no longer return NIL
973 after the first few invocations. (thanks to Gerd Moellmann)
974 ** CALL-NEXT-METHOD with no arguments now passes the original
975 values of the arguments, even in the presence of assignment.
976 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
978 ** DISASSEMBLE works with closures and funcallable instances.
979 ** ADD-METHOD now returns the generic function, not the new method.
980 ** FIND-METHOD signals an error if the lengths of the specializers
981 is incompatible with the generic function, even if the ERRORP
983 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
984 which its argument is a member.
985 ** DEFCLASS only redefines the class named by its class-name
986 argument if that name is the proper name of the class;
987 otherwise, it creates a new class.
988 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
989 of the UNBOUND-SLOT condition to the name of the slot.
990 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
991 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
992 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
993 SLOT-MAKUNBOUND in the specified fashion.
995 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
996 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
997 cross-compilation host. As a consequence, we can now bootstrap our
998 way up to SBCL starting with a bare gcc toolchain and human-readable
999 source code (first the source to CLISP, then the source to SBCL).
1000 * A contributed module containing a partial implementation of the
1001 simple-streams interface has been included. (thanks to Rudi
1003 * A contributed module implementing the RFC1321 Message Digest
1004 Algorithm, known as MD5, has been included.
1005 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1006 no longer has any effect, as the code controlled by this feature
1007 has been deleted. (As far as we know, no-one has ever built using
1008 this feature, and its semantics were confused in any case).
1009 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1010 work on conditions (as required by the ANSI specification),
1011 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1012 expected behaviour on conditions. Users should note, however,
1013 that such behaviour is not required by the ANSI specification,
1014 and so use of this behaviour may render their code unportable.
1015 * fixed some bugs revealed by Paul Dietz' test suite:
1016 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1018 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1019 ** SXHASH on condition objects no longer returns NIL.
1020 ** :ALLOCATION :CLASS slots are better treated; their values are
1021 updated on class redefinition, and initforms inherited from
1022 superclasses are applied.
1023 ** REMOVE-METHOD returns its generic function argument even when
1024 no method was removed.
1025 ** SHARED-INITIALIZE now initializes the values of the requested
1026 slots, including those with :ALLOCATION :CLASS.
1027 ** ALLOCATE-INSTANCE now works on structure classes defined via
1028 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1030 ** SLOT-EXISTS-P now works on conditions, as well as structures
1032 ** MAKE-LOAD-FORM now has the required methods on
1033 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1034 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1035 keyword, and now implements the SLOT-NAMES argument.
1036 ** methods with &OPTIONAL arguments no longer allow too many
1037 arguments to be passed in the call without error.
1038 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1039 option is consistent with the required arguments of the generic
1040 function lambda list.
1041 * bug fix: REQUIRE accepts a string designator. (Thanks to
1043 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1044 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1045 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1046 * bug fix: The compiler now checks for duplicated variables in macro
1048 * bug fix: SETQ on globals returns the correct value.
1049 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1050 not a COMPILER-ERROR (followed by some other strange error on
1051 choosing the CONTINUE restart).
1052 * bug fix: make.sh and friends are now more consistent in the way that
1053 they look for GNU "make".
1055 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1056 * experimental native threads support (on x86 Linux >=2.4 only).
1057 This is not compiled in by default: you need to add :SB-THREAD to
1058 the target features. See the "Beyond ANSI" chapter of the manual
1060 * fix for longstanding nonANSIism: The old distinction between
1061 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1062 The return value from CL:FIND-CLASS is now a CLOS class, and
1063 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1064 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1065 * An interface to the MetaObject Protocol, as described in Kiczales,
1066 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1067 MIT Press, 1991, is available from the SB-MOP package.
1068 * incompatible change: the SB-PCL package should now be considered
1069 a private implementation detail, and no longer a semi-private MOP
1071 * minor incompatible change: due to rearrangement for threads, the
1072 control stack and binding stack are now allocated at arbitrary
1073 addresses instead of being hardcoded per-port. Users affected by
1074 this probably have to be doing advanced things with shared
1075 libraries, and will know who they are.
1076 * minor incompatible change: Previously, all --eval forms used were
1077 processed with READ before any of them were processed with EVAL.
1078 Now each --eval form is processed with both READ and EVAL before
1079 the next --eval form is processed. (Thus package operations like
1080 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1081 work as the user might reasonably expect.)
1082 * minor incompatible change: *STANDARD-INPUT* is now only an
1083 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1085 * minor incompatible change: Y-OR-N-P is now character-oriented,
1086 not line oriented. Also, YES-OR-NO-P now works without errors.
1087 (thanks to Antonio Martinez)
1088 * sb-aclrepl module improvements: an integrated inspector, added
1089 repl features, and a bug fix to :trace command.
1090 * Known functions, which cannot be open coded by the backend, are
1091 considered to be able to check types of their arguments. (fixing
1092 a bug report by Nathan J. Froyd)
1093 * fixed a bug in computing method discriminating functions: It is
1094 now possible to define methods specialized on classes which have
1095 forward-referenced superclasses. (thanks to Gerd Moellmann)
1096 * fixed evaluation order in optional entries (reported by Gilbert
1098 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1099 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1100 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1101 required-by-AMOP NAME argument, as well as CLASS and
1102 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1103 * fixed bug 20: DEFMETHOD can define methods using names that are
1104 not the proper names of classes to designate class specializers.
1105 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1106 Unix file descriptors, instead of blowing up. (thanks to Antonio
1108 * Garbage collection refactoring: user-visible change is that a
1109 call to the GC function during WITHOUT-GCING will not do garbage
1110 collection until the end of the WITHOUT-GCING. If you were doing
1111 this you were probably losing anyway.
1112 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1113 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1114 TYPEP the latter but not the former.
1115 * The compiler issues a full WARNING for calls to undefined functions
1116 with names from the CL package.
1117 * MAP-INTO for a vector destination is open coded. (reported by
1118 Brian Downing on c.l.l)
1119 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1120 documentation string.
1121 * fixed some bugs revealed by Paul Dietz' test suite:
1122 ** COPY-ALIST now signals an error if its argument is a dotted
1124 ** Condition slots are now accessed more correctly in the presence
1125 of multiple initargs for a given slot.
1126 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1127 exclude restarts of the same name associated with a different
1129 ** DEFCLASS of forward-referenced classes with another
1130 forward-referenced class in the superclasses list no longer
1132 ** Condition slots are now initialized once each, not multiple
1133 times. (thanks to Gerd Moellmann)
1134 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1136 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1137 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1138 arguments contain duplicated elements.
1139 ** RESTART-CASE understands local macros.
1140 ** RESTART-CASE associates exactly its own restarts with a condition.
1141 ** ENDP in safe mode checks its argument to be of type LIST.
1142 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1143 in question is unbound.
1144 ** Optimized MAKE-INSTANCE functions no longer cause internal
1145 assertion failures in the presence of duplicate initargs.
1146 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1147 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1148 propagated even in the ctor optimized implementation of
1150 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1152 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1153 * a better implementation of SXHASH on (simple) bit vectors,
1154 measured both in execution speed and in distribution of results
1155 over the positive fixnums, has been installed. Likewise, a better
1156 implementation of EQUAL for simple bit vectors is now available.
1157 * fixed CEILING optimization for a divisor of form 2^k.
1158 * fixed bug 240 (emitting extra style warnings "using the lexical
1159 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1160 by Antonio Martinez)
1161 * fixed SXHASH, giving different results for NIL depending on type
1162 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1163 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1164 variable. (found by Rolf Wester)
1165 * SBCL does not ignore type declarations for special
1166 variables. (reported by rif on c.l.l 2003-03-05)
1167 * some bug fixes in contrib/sb-aclrepl/
1168 * fixed some bugs revealed by Paul Dietz' test suite:
1169 ** a bug in the CONS type specifier, whereby the CAR and CDR
1170 types got intertwined, has been fixed;
1171 ** the type system is now able to reason about the interaction
1172 between INTEGER and RATIO types more completely;
1173 ** APPEND, [N]REVERSE and NRECONC check that those their
1174 arguments, which must be proper lists, are really so;
1175 ** An array specialized to be unable to hold elements has been
1176 implemented, as required -- yes, really -- by ANSI;
1177 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1178 on malformed property lists;
1180 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1181 * incompatible packaging change: in line with Unix convention,
1182 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1183 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1184 * REQUIRE and PROVIDE are now optionally capable of doing something
1185 useful. See the documentation string for REQUIRE.
1186 * infrastructure for a managed SBCL contrib system: contributed
1187 modules in this release include:
1188 ** the ASDF system definition facility;
1189 ** an interface to the BSD Sockets API;
1190 ** an ACL-like convenience interface to the repl;
1191 (thanks to Kevin Rosenberg)
1192 ** an implementation of ROTATE-BYTE, with efficient implementation
1194 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1195 gives a closer approximation to the right answer than previously.
1196 (thanks to Raymond Toy)
1197 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1198 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1199 optional environment arguments, as required by ANSI.
1200 * fixed bugs in other functions taking environment objects, allowing
1201 calls with an explicit NIL environment argument to be compiled
1203 * fixed bug 228: primary return values from
1204 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1205 COMPILE or FUNCTION.
1206 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1207 :TYPE will no longer signal errors on innocuous objects.
1208 * fixed bug 231b: SETQ is better at respecting type declarations in
1209 the lexical environment.
1210 * fixed a bug in DEFCLASS: classes named by symbols with no or
1211 unprintable packages can now be defined.
1212 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1213 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1214 * fixed compiler failure related to checking types of functions.
1215 (reported by Robert E. Brown)
1216 * the compiler is now much more consistent in its error-checking
1217 treatment of bounding index arguments to sequence functions: in
1218 (SAFETY 3) code, errors will be signalled in almost all cases if
1219 invalid sequence bounding indices are passed to functions defined
1220 by ANSI to operate on sequences.
1221 * fixed a bug in the build procedure: documentation of SBCL-specific
1222 packages is now preserved and available in the final Lisp image.
1223 * lifted FDEFINITION lookup out of loops in the implementation of
1224 many list operations. (thanks to Robert E. Brown)
1225 * fixed a bug in the reader: the #n# reader macro now works for
1226 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1227 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1228 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1229 E. Brown and Tony Martinez respectively)
1230 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1231 SLOT-BOUNDP: in particular, it is now able to optimize them much
1232 better, and is now not vulnerable to having packages renamed.
1233 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1234 always called when a slot is not present in an instance. (thanks
1236 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1237 longer signal an error on unreading a character following EOF on
1238 the previous constituent stream. (thanks to Tony Martinez)
1239 * fixed some bugs revealed by Paul Dietz' test suite:
1240 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1241 not just nonnegative fixnums;
1242 ** the logical bit-array operators such as BIT-AND now accept an
1243 explicit NIL for their "opt-arg" argument (to indicate a
1244 freshly-consed result bit-array);
1245 ** ELT now signals an error on an invalid sequence index in safe
1247 ** the type system is now cleverer about negations of numeric
1248 types, and consequently understands the BIGNUM and RATIO types
1250 ** the type system is now cleverer about the interaction between
1251 INTEGER and RATIO types: while bugs still remain, many more
1252 cases are accurately computed;
1253 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1254 if it is in the last clause;
1255 ** CONSTANTLY now correctly returns a side-effect-free function in
1257 ** DECLARE is no longer treated as a special-operator; in
1258 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1259 * incremented fasl file version number due to the change in the
1260 DEFSTRUCT-SLOT-DESCRIPTION structure.
1262 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1263 * minor incompatible change: code processed by the "interpreter" or
1264 EVAL now has a compilation optimization policy of (DEBUG 2)
1265 (changed from (DEBUG 1)) to improve debuggability of interactive
1266 development, and to allow the use of the debug RETURN command in
1268 * an experimental implementation of the RETURN command for the
1269 debugger has been included. (thanks to Frederik Kuivinen)
1270 * fixed bug 62: constraints were not propagated into a loop.
1271 * fixed bug in embedded calls of SORT (reported and investigated by
1273 * fixed some bugs revealed by Paul Dietz' test suite:
1274 ** printing and reading of arrays with some dimensions having
1275 length 0 (thanks to Gerd Moellmann);
1276 ** BOA constructor with &AUX argument without a default value does
1277 not cause a type error;
1278 ** CONSTANTP now returns true for all self-evaluating objects.
1280 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1281 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1282 accessors that are related by inheritance, as specified in the
1283 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1284 Valtteri Vuorikoski)
1285 * The compiler is now able to inline functions that were defined in
1286 a complex lexical environment (e.g. inside a MACROLET).
1287 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1289 * Support for the upcoming FreeBSD-5.0 release has been included.
1290 (thanks to Dag-Erling Smorgrav)
1291 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1292 effect when it is not in a toplevel context.
1293 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1294 stand a better chance of being correct. (thanks to Gerd
1296 * fixed bug in COERCE, which now signals an error on coercing a
1297 rational to a bounded real type which excludes the expected
1299 * The compiler is now able to derive types more accurately from the
1300 COERCE and COMPILE functions.
1301 * fixed bug 223: functional binding is considered to be constant
1302 only for symbols in the CL package.
1303 * fixed bug 231: SETQ did not check the type of a variable being set
1304 (reported by Robert E. Brown)
1305 * A new optimization for MAKE-INSTANCE has been included, fixing
1306 various bugs (including relating to :ALLOCATION :CLASS slots and
1307 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1309 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1310 ** As required by ANSI, LOOP now disallows anonymous collection
1311 clauses such as COLLECT I in conjunction with aggregate boolean
1312 clauses such as THEREIS (= I 1);
1313 ** LOOP now signals an error when any variable is reused in the
1314 same loop (including the potentially useful construct analogous
1315 to WITH A = 1 WITH A = (1+ A);
1316 ** IT is only a special loop symbol within the first clause of a
1317 conditional loop clause;
1318 ** LOOP with a typed iteration variable over a hashtable now
1319 signals a type error iff it should.
1320 * fixed some other bugs revealed by Paul Dietz' test suite:
1321 ** FILE-STREAM now names the class previously known as FD-STREAM;
1322 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1323 argument) no longer signals an error;
1324 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1325 of the slot symbol, rather than using the current package
1326 ((:CONC-NAME "") continues to intern the slot's name in the
1328 * incremented fasl file version number, because of the incompatible
1329 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1330 of the new implementation of DEFINE-COMPILER-MACRO.
1332 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1333 * Support for building SBCL for MIPS platforms running in
1334 little-endian mode has now been checked in, and basic
1335 functionality on said platforms verified.
1336 * minor incompatible change: PCL now records the pathname of a file
1337 in which methods and the like are defined, rather than its
1339 * minor incompatible change: TRUENAME now considers the truename of
1340 a file naming a directory to be the pathname with :DIRECTORY
1341 component indicating that directory.
1342 * minor incompatible change: a NAMED clause in the extended form of
1343 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1344 reason for the previous behaviour is unclear.
1345 * more systematization and improvement of CLOS and MOP conformance
1346 in PCL (thanks to Gerd Moellman and Pierre Mai):
1347 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1349 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1350 primary methods with no specializers;
1351 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1353 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1354 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1355 FORWARD-REFERENCED-CLASSes; error reporting on
1356 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1358 ** SXHASH on CLOS instances now uses a slot internal to the
1359 instance to return different numbers on distinct instances,
1360 while preserving the same return value through invocations of
1362 ** DEFMETHOD signals errors when methods with longer incongruent
1363 lambda lists are added to generic functions;
1364 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1365 CLASS, as specified in AMOP;
1366 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1367 on the order returned by the primary method for classes of
1368 class STANDARD-CLASS;
1369 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1370 * fixed some bugs shown by Paul Dietz' test suite:
1371 ** DOLIST puts its body in TAGBODY;
1372 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1374 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1375 value producing form;
1376 ** if more variables are given to PROGV than values, extra
1377 variables are bound and made to have no value;
1378 ** NSUBSTITUTE on list arguments gets the right answer with
1380 ** ELT signals an error of type TYPE-ERROR when the index argument
1381 is not a valid sequence index;
1382 ** LOOP signals (at macroexpansion time) an error of type
1383 PROGRAM-ERROR when duplicate variable names are found;
1384 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1385 ** FUNCALL of special-operators now cause an error of type
1387 ** PSETQ now works as required in the presence of side-effecting
1388 symbol-macro places;
1389 ** NCONC accepts any object as its last argument;
1390 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1392 ** loop-for-as-package does not require a package to be explicitely
1394 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1396 * fixed bug 166: compiler preserves "there is a way to go"
1397 invariant when deleting code.
1398 * fixed bug 172: macro lambda lists with required arguments after
1399 &REST arguments now cause an error to be signalled. (thanks to
1401 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1402 bug. (thanks to Matthew Danish)
1403 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1405 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1406 arguments are lexically rebound. (thanks to Gerd Moellmann and
1408 * fixed bug 194: error messages are now more informative when there
1409 is no primary method applicable in a call to a generic
1410 function. (thanks to Gerd Moellmann)
1411 * fixed bug in command line argument checking (thanks to Julian
1413 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1414 (thanks to Matthew Danish)
1415 * incremented fasl file version number, because of the
1416 SXHASH-related changes in the layout of CLOS data structures
1418 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1419 * minor incompatible change: The runtime (the Unix executable named
1420 "sbcl") is now much pickier about the .core files it will load.
1421 Essentially it now requires .core files to descend from the same
1422 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1423 as the runtime does. (The intent is to prevent the crashes which
1424 can occur, and which can even be reported as mysterious failures,
1425 when people patch the sources or change the build parameters
1426 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1427 sbcl and .core files.)
1428 * fixed bug: VALUES-LIST is no longer optimized away.
1429 * fixed bug 142: The FFI conversion of C string values to Lisp
1430 string values no longer conses excessively. (thanks to Nathan
1431 Froyd porting Raymond Toy's fix to CMU CL)
1432 * began to systematize and improve MOP conformance in PCL (thanks to
1433 Nathan Froyd, Gerd Moellman and Pierre Mai):
1434 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1436 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1437 ** FINALIZE-INHERITANCE is now called on class finalization;
1438 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1439 argument precedence order.
1440 * fixed bug 202: The compiler no longer fails on functions whose
1441 derived types contradict their declared type.
1442 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1443 so it can be non-toplevel.
1444 * The fasl file version number has changed (because of the new
1445 implementation of DEFMACRO).
1446 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1447 safe code, that any length requirement by their type-specifier
1448 argument is valid. The exceptions to this are described in bug
1450 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1451 functions now check the types of their inputs as required by ANSI.
1452 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1453 introduced symbol is DECLAREd to be SPECIAL.
1454 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1455 * fixed bug: :COUNT argument to sequence functions may be negative
1456 * fixed bug: body of DO-SYMBOLS may contain declarations
1457 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1458 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1459 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1460 symbol macro only once
1461 * fixed printing of call frame when argument list is unavailable
1462 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1463 * compiler no longer signals WARNING on unknown keyword
1466 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1467 * A beta-quality port to the mips architecture running Linux,
1468 based on the old CMUCL backend, has been made. It has been tested
1469 on a big-endian kernel, and works sufficiently well to be able to
1470 rebuild itself; it has not been tested in little-endian mode.
1471 * fixed an inconsistency between gencgc.c and purify.c which made
1472 dumping/loading .core files unreliable
1473 * fixed bug 120a: The compiler now deals correctly with IFs where
1474 the consequent is the same as the alternative, instead of
1475 misderiving the return type. (thanks to Alexey Dejneka)
1476 * fixed bug 113: Logical pathnames are now dumpable (the logical
1477 host is resolved at load-time, throwing an error if it is not
1479 * fixed bug 174: FORMAT's error message is slightly clearer when a
1480 non-printing character is used in a format directive.
1481 * fixed several bugs in compiler checking of type declarations, i.e.
1482 violations of the Python "declarations are assertions" principle
1483 (thanks to Alexey Dejneka)
1484 * fixed several bugs in PCL's error checking (thanks to Gerd
1486 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1488 * fixed bug in compilation of functions as first class values
1489 (thanks to Antonio Martinez-Shotton)
1490 * The compiler's handling TYPE-ERRORs which it can prove will
1491 inevitably happen at runtime has been cleaned up and corrected
1492 in several ways. (thanks to Alexey Dejneka)
1493 * improved argument type checking for various basic arithmetic
1494 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1495 lavished on them in the past that they can be compiled in many
1496 ways in different special cases
1497 * fixed bug 181: compiler checks validity of user supplied type
1499 * cleaned up code flushing in optimization: Function calls which
1500 should signal errors for safety purposes (e.g. which ANSI says
1501 should signal errors when their arguments are of incorrect type)
1502 are no longer optimized away.
1503 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1504 * incremented fasl file version number, because changes in the
1505 implementation of sequence functions like COERCE caused
1506 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1507 in old inline expansions) to become undefined. (Actually these
1508 changes were later undone, so we might very well be binary
1509 compatible with 0.7.7 after all, but leaving the version number
1510 incremented seemed like the simplest and most conservative
1513 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1514 * An alpha-quality port to the parisc architecture running Linux,
1515 based on the old CMUCL backend, has been made. This, even more so
1516 than the other backends, should be considered still a work in
1517 progress; known problems include that the Linux kernel in 64-bit
1518 mode does not propagate the correct sigcontext structure to
1519 userspace, and consequently SBCL on a parisc64 kernel will not
1521 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1522 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1523 suppressed.) Also now that the compiler is looking at declarations
1524 in the environment, it checks optimization declarations as well,
1525 and suppresses inlining when (> DEBUG SPEED).
1526 * More fixes have been made to treatment of floating point exception
1527 treatment and other Unix signals. In particular, floating point
1528 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1529 * The detection and handling of control stack exhaustion (infinite
1530 or very deeply nested recursion) has changed. Stack exhaustion
1531 detection is now done by write-protecting pages at the OS level
1532 and applies at all optimization settings; when found, a
1533 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1534 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1535 be caught using IGNORE-ERRORS.
1536 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1537 correctly when transforming recursive LABELS functions to LETs.
1538 (thanks to Alexey Dejneka)
1539 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1540 that are names of constants or global variables.
1541 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1542 alien routines with docstrings.
1543 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1544 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1546 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1547 (thanks to Eric Marsden)
1548 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1549 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1550 * Bug fix: The SPARC backend can now compile functions involving
1551 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1552 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1553 to a functions expecting a PATHNAME-DESIGNATOR.
1554 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1555 lambda lists. (thanks to Alexey Dejneka)
1556 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1557 functions so that EXPORTing the name of the class doesn't cause
1558 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1559 to Antonio Martinez for reporting this)
1560 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1561 constant-folded without failing an assertion. (thanks to Einar
1562 Floystad Dorum for reporting this)
1563 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1564 types are now dealt with more correctly by the compiler.
1565 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1566 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1567 behaviour analogous to RENAME-FILE. This puts its behaviour more
1568 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1570 * The fasl file version number has changed again. (because of the
1571 bug fix involving the names of PCL MAKE-INSTANCE functions)
1573 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1574 * bug fix: Floating point exceptions are treated much more
1575 consistently on the x86/Linux and PPC/Linux platforms.
1576 * Array initialization with :INITIAL-ELEMENT is now much faster for
1577 cases when the compiler cannot open code the array creation, but
1578 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1579 array accesses have also seen a speed increase.
1580 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1581 specified. (This was at the root of some bad interactions between
1582 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1584 * bug fix: Internal error arguments for undefined functions are now
1585 computed correctly on the PPC/Linux platform.
1586 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1587 Raymond Toy's patch for CMU CL)
1588 * Support for the Solaris 9 operating environment has been included
1589 (thanks to Daniel Merritt)
1590 * A very ugly but hopefully complete draft of the missing FFI chapter
1591 of the manual has been created by reformatting the corresponding
1592 CMU CL manual chapter into (currently very ugly and incoherent)
1593 DocBook and bringing it up to date for SBCL behavior. Thus, the
1594 manual is now essentially complete, at least by my extreme
1595 once-and-only-once standards, whereby it's acceptable to refer to
1596 the doc strings of SB-EXT functions as the primary documentation.
1597 * The fasl file version number has changed again, due to cleanup of
1598 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1599 is no longer a static symbol.)
1601 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1602 * SBCL now builds with OpenMCL (version 0.12) as the
1603 cross-compilation host; also, more progress has been made toward
1604 bootstrapping under CLISP.
1605 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1607 * bug 158 fixed: The compiler can now deal with integer loop
1608 increments different from 1; fixing this turned out also to fix
1610 * bug 169 fixed: no more bogus warnings about using lexical bindings
1611 despite the presence of perfectly good SPECIAL declarations (thanks
1612 to David Lichteblau)
1613 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1614 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1615 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1617 * bug 180 fixed: Method combination specifications no longer ignore
1618 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1619 * bug fix: Structure type predicate functions now check their argument
1620 count as they should.
1621 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1622 correctly. (thanks to Pierre Mai)
1623 * minor incompatible change: The --noprogrammer option is deprecated
1624 in favor of the new --disable-debugger option, which is very similar.
1625 (The major difference is that it takes effect at a slightly different
1626 time at startup, causing handling of errors in --sysinit and
1627 --userinit files will be affected differently.) The
1628 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1629 been added to allow this functionality to be controlled from ordinary
1630 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1631 maintainers, who might want to run non-interactive scripts to
1632 build SBCL cores which will later be used interactively.)
1633 * minor incompatible change: The LOAD function no longer, when given
1634 a wild pathname to load, loads all files matching that pathname.
1635 Instead, an error of type FILE-ERROR is signalled.
1637 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1638 * bug 147 fixed: The compiler preserves its block link/count
1639 invariants more correctly now so that it doesn't crash. (thanks
1641 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1643 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1644 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1645 no-value-for-this-character as NIL (as specified by ANSI).
1646 * HOST-NAMESTRING on physical pathnames now returns a string that is
1647 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1648 (thanks to Christophe Rhodes)
1649 * The Alpha port handles icache flushing more correctly. (thanks to
1651 * More progress has been made toward bootstrapping under CLISP. (thanks
1652 to Christophe Rhodes)
1653 * The fasl file format has changed again, because dynamic loading
1654 on OpenBSD (which has non-ELF object files) motivated some cleanups
1655 in the way that foreign symbols are transformed and passed around.
1656 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1657 is no longer treated as whitespace by the reader, but instead as
1658 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1659 |A
\7fB|, instead of A as it used to.
1661 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1662 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1663 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1664 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1665 this as of 0.7.1.45, but was left out of the previous news section
1666 (thanks to Dan Barlow)
1667 * SBCL now runs on the Solaris operating system on SPARC architectures
1668 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1669 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1670 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1671 * SPARC backend cleanups, allowing builds of cores optimized for V8
1672 and V9 SPARCS, and also emission of code targeted to a particular
1673 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1675 * SBCL is closer to bootstrapping under CLISP, thanks to various
1676 fixes by Christophe Rhodes.
1677 * The fasl file format has changed again, to allow the compiler's
1678 INFO database to support symbol macros.
1679 * The user manual (in doc/) is formatted into HTML more nicely.
1680 (thanks to coreythomas)
1681 * The system is smarter about SUBTYPEP relationships, especially
1682 those involving NOT types (including types such as ATOM which are
1683 represented internally using NOT types). Thus SUBTYPEP is less
1684 likely to return (VALUES NIL NIL) in general, and in particular
1685 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1687 * The fasl file format has changed again, because the internal
1688 representation of types now includes a new slot to support the new
1689 SUBTYPEP-of-NOT-types logic.
1690 * (not a change in the main branch of SBCL, but a related prototype
1691 which can hopefully be merged into the main branch of SBCL in the
1692 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1693 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1694 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1695 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1696 dispatch macro character combinations. (thanks to Alexey Dejneka)
1697 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1698 that superficially look like logical namestrings correctly.
1699 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1701 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1702 default supplied-p) for &optional and &key arguments. (thanks to
1705 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1706 * incompatible change: The compiler is now less aggressive about
1707 tail call optimization, doing it only when (> SPACE DEBUG) or
1708 (> SPEED DEBUG). (This is an incompatible change because there are
1709 programs which relied on the old CMU-CL-style behavior to optimize
1710 away their unbounded recursion which will now die of stack overflow.)
1711 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1712 for non-GENCGC systems has been increased to 20M (since that
1713 seems much closer to the likely performance optimum for modern
1714 systems than the old 4M value was)
1715 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1716 and *DEBUG-PRINT-LEVEL*
1717 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1718 of CMU CL's support for SPARC, and various endianness and other
1719 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1720 * new syntactic sugar for the Unix command line: --load foo.bar is now
1721 an alternate notation for --eval '(load "foo.bar")'.
1723 ** The system now detects stack overflow and handles it gracefully,
1724 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1725 optimization settings. (This is a good thing in general, and
1726 its introduction in this version should be particularly timely
1727 for anyone whose code fails because of suppression of tail
1729 ** The system now hunts for the C variable "environ" in a more
1730 devious way, to avoid segfaults when the C library version differs
1731 between compile time and run time. (thanks to Christophe Rhodes)
1732 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1733 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1734 ** The compiler no longer issues bogus style warnings for undefined
1735 classes in the same source file as the DEFCLASSes which defined
1736 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1738 ** fixes in CONDITION class precedence list for undefined function
1739 errors (thanks to Alexei Dejneka)
1740 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1741 correctly. (thanks to Dan Barlow)
1742 ** portability fixes aiming at bootstrapping under CLISP (thanks
1743 to Dave McDonald and Christophe Rhodes)
1744 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1745 ** fixes in type translation and and type inference (thanks to
1747 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1748 ** various fixes in the new ports (thanks to Dan Barlow)
1749 * several changes related to debugging:
1750 ** suppression of tail recursion, as noted above
1751 ** stack overflow detection, as noted above
1752 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1753 is now the default. (For some time encapsulation has been more
1754 reliable than the breakpoint-based :ENCAPSULATE NIL
1755 implementation, at least on X86 systems; and I just noticed that
1756 encapsulation also seems closer to the spirit of the ANSI
1759 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1761 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1762 up properly again. (There was a packaging bug in 0.7.0 which
1763 left their definitions in SB-SYS::LOAD-FOREIGN and
1764 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1765 vital for most things which interface to C-level interfaces,
1766 like extensions working with sockets or databases or
1767 Perl-compatible regexes or whatever, and the need to fix
1768 this bug is the main reason that 0.7.1 was released so
1770 ** DEFGENERIC is now choosier about the methods it redefines, so that
1771 reLOADing a previously-LOADed file containing DEFGENERICs does
1772 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1773 cycle now works as it should. (thanks to Alexey Dejneka)
1774 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1775 fixed by Christophe Rhodes. (He actually submitted this patch
1776 months ago, and I delayed until after 0.7.0.)
1777 ** Bug 111 (internal compiler confusion about runtime checks on
1778 FUNCTION types) was fixed by Alexey Dejneka.
1779 * Some internal cleanups (getting rid of variables which aren't
1780 needed now that the byte interpreter is gone) caused the fasl
1781 file format number to change again.
1783 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1784 * major incompatible change: The default fasl file extension, i.e. the
1785 default extension for files produced by COMPILE-FILE, has changed
1786 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1788 ** There are many changes in the implementation of the compiler.
1789 SBCL is now essentially a compiler-only implementation of ANSI
1790 Common Lisp. EVAL still "interprets" a few special cases, but
1791 almost all the interesting cases are handled by creating
1792 a LAMBDA expression, calling COMPILE on it, then calling
1793 FUNCALL on the result.
1794 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1795 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1796 Since the code is newer, there might still be some new bugs
1797 (though not as many as before Martin Atzmueller's fixes:-). But
1798 the new code is substantially simpler and clearer, and hopefully
1799 any remaining bugs will be simpler, less fundamental, and more
1800 fixable then the bugs in the old code.
1801 ** The revised compiler is still a little unsteady on its feet.
1803 *** The debugging information it produces (particularly the names
1804 of FUNCTION objects) is sometimes much less useful than what
1805 the old compiler produced.
1806 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1807 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1808 within a MACROLET) has been temporarily weakened.
1809 ** There are new compiler optimizations for various functions:
1810 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1811 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1812 *** the math functions TRUNCATE, FLOOR, and CEILING
1813 *** the function-of-all-trades COERCE
1814 Mostly these should be transparent, but there's one
1815 potentially-annoying problem (bug 117): when the compiler
1816 inline-expands a function and does type analysis on the result,
1817 it can create control paths which have type mismatches, and
1818 when it can't prove that those control paths aren't taken,
1819 it will issue WARNINGs about the type mismatches. This is
1820 a particular problem in practice for the new sequence functions.
1821 It's not clear how this should be fixed, and for now, a
1822 workaround is given in the entry for 117 in the BUGS file.
1823 ** (Because of the interaction between the two previous items --
1824 occasional inlining problems and new inline expansions -- some
1825 of the new sequence function optimizations won't really kick in
1826 completely until debugging information, and then inlining, are
1827 straightened out in some future version.)
1828 * minor incompatible changes:
1829 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1830 DIRECTORY no longer implicitly promotes NIL slots of its
1831 pathname argument to :WILD. In particular, when you ask for the
1832 contents of a directory (which you used to be able to do without
1833 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1834 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1835 ** changes in behavior that ANSI explicitly defines to be
1836 implementation dependent:
1837 *** The new compiler-only implementation still conforms with ANSI,
1838 but acts a little different than before. Besides the obvious
1839 changes in performance tradeoffs (that the cost per form passed
1840 to EVAL has gone up, and the cost per form executed by EVAL
1841 has gone down), the behavior of the system changes a little
1842 because there are no longer any interpreted function objects.
1843 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
1844 e.g. doing COMPILE on the output of interactive DEFUN is
1846 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
1848 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
1849 has changed from (:CL) to NIL.
1850 *** The CHAR-NAME of unprintable ASCII characters which, unlike
1851 e.g. #\Newline and #\Tab, don't have names specified in the
1852 ANSI Common Lisp standard, is now based on their ASCII symbolic
1853 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
1854 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
1855 are no longer used for output.
1856 ** changes in internal implementation constants:
1857 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
1858 4 million. (If your application spends a lot of time GCing and
1859 you have a lot of RAM, you might want to experiment with
1860 increasing it even more.)
1861 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
1862 However, almost all old code should still continue to work without
1863 immediate update, as SB-C-CALL is now a (deprecated) nickname
1865 ** Old operator names in the style DEF-FOO are now deprecated in
1866 favor of new corresponding names DEFINE-FOO, for consistency with
1867 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
1868 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
1869 internal symbols, but a few supported extensions like
1870 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
1871 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
1872 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
1873 etc. as you get deeper into recursive calls to the debugger
1874 command loop, instead of the old "5]", "5]]", "5]]]"
1875 sequence. (I was motivated to do this when squabbles between
1876 ILISP and SBCL left me very deeply nested in the debugger. In the
1877 short term, this change will probably provoke more ILISP/SBCL
1878 squabbles, but hopefully it will be an improvement in the long run.)
1879 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
1880 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
1881 function, since declaiming return types involving aliens is
1882 (1) annoyingly messy to do by hand and (2) vital to efficient
1883 compilation of code which calls such functions.
1884 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
1885 longer reexported by the SB-EXT package. They're solely useful
1886 for alien code, so it seems more logical that you should get
1887 them from the SB-ALIEN package, not in SB-EXT.
1888 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
1889 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
1890 features. Instead, the code that they used to control is always
1891 built into the system.
1892 * many other bug fixes
1893 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
1894 advantage of the new EVAL-WHEN stuff and to clean them up in
1895 general, and they are now more ANSI-compliant in a number of
1896 ways. Martin Atzmueller is responsible for a lot of this.
1897 ** Besides the cleanups discussed above, Martin Atzmueller fixed
1899 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
1900 *** correct ERROR type for various file operations
1901 *** some fixes for Lisp streams
1902 *** DEFMETHOD syntax checking
1903 *** changing old weird representation of debug information as
1904 strings (which, among their other deficiencies, don't transform
1905 correctly when you rename packages, and don't change their
1906 print representation when you change things like *PACKAGE*
1907 and *PRINT-LENGTH*) to symbols and lists of symbols
1908 He also made several improvements and fixed several bugs in DESCRIBE.
1909 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
1911 *** misbehavior of WRITE-STRING/WRITE-LINE
1912 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
1913 and several other LOOP problems as well
1914 *** DIRECTORY when similar filenames are present
1915 *** DEFGENERIC with :METHOD options
1916 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
1917 *** bug in the optimization of ARRAY-ELEMENT-TYPE
1918 *** argument ordering in FIND with :TEST option
1919 *** mishandled package designator argument in APROPOS-LIST
1920 *** various problems in the backquote readmacro
1921 *** a bug in APROPOS
1922 *** probably some others that I'm not describing very well here,
1923 since the CVS log documents them by reference to sbcl-devel
1924 messages, and the SourceForge archives aren't working well.:-(
1925 ** Dan Barlow improved the Alpha port (and is making progress on the
1926 PPC port, for those of you who think different).
1927 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
1928 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
1929 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
1930 continues to work on the SPARC port (for those of you in a position
1931 to look down upon our little PC-compatible boxes from a great height).
1932 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
1933 and uses that copy, rather than the current dynamic value, when
1934 it's trying to decide whether to truncate output. Thus e.g.
1935 (let ((*print-lines* 50))
1936 (pprint-logical-block (stream nil)
1938 (let ((*print-lines* 8))
1939 (print (aref possiblybigthings i) stream)))))
1940 should now truncate the logical block only at 50 lines, instead of
1941 often truncating it at 8 lines, as it did before.
1942 * The doc/cmucl/ directory, containing old CMU CL documentation
1943 from the time of the fork, is no longer part of the base system.
1944 SourceForge has shut down its anonymous FTP service, and with it
1945 my original plan for distributing the old CMU CL documentation
1946 there. For now, if you need these files you can download an old
1947 SBCL source release and extract them from it.
1948 * The fasl file version number changed again, for dozens of reasons,
1949 some of which are apparent above.
1951 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
1952 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
1953 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
1954 patch, so that DISASSEMBLE output is much nicer.
1955 * The code in the SB-PROFILE package now seems reasonably stable.
1956 I still haven't decided what the final interface should look like
1957 (I'd like PROFILE to interact cleanly with TRACE, since both
1958 facilities use function encapsulation) but if you have a need
1959 for profiling now, you can probably use it successfully with
1960 the current CMU-CL-style interface.
1961 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
1962 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
1963 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
1964 link now returns the dangling link itself, and for similar
1965 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
1966 link itself. (In these cases the old code signalled an error and
1967 looped endlessly, respectively.) Thus, DIRECTORY now works even
1968 in the presence of dangling and cyclic symbolic links.
1969 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
1970 is now a supported extension again, since the consensus on
1971 sbcl-devel was that it can be useful for ordinary development
1972 work, not just for debugging SBCL itself.
1973 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
1974 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
1975 that currently-defined functions might be redefined later with
1976 different return types.
1977 * Hash tables can be printed readably, as inspired by CMU CL code
1978 of Eric Marsden and SBCL code of Martin Atzmueller.
1979 * better error handling in CLOS method combination, thanks to
1980 Martin Atzmueller porting Pierre Mai's CMU CL patches
1981 * more overflow fixes for >16Mbyte I/O buffers
1982 * A bug in READ has been fixed, so that now a single Ctrl-D
1983 character suffices to cause end-of-file on character streams.
1984 In particular, now you only need one Ctrl-D at the command
1985 line (not two) to exit SBCL.
1986 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
1988 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
1989 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
1990 does the right thing.
1991 * The implementation of some type tests, especially for CONDITION
1992 types, is now tidier and maybe faster, due to CMU CL code
1993 originally by Douglas Crosher, ported by Martin Atzmueller.
1994 * Some math functions have been fixed, and there are new
1995 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
1996 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
1997 * (There are also some new optimizers in contrib/*-extras.lisp. Those
1998 aren't built into sbcl-0.6.13, but are a sneak preview of what's
1999 likely to be built into sbcl-0.7.0.)
2000 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2001 CL, ported to SBCL by Martin Atzmueller)
2002 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2003 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2004 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2005 * There's a new slam.sh hack to shorten the edit/compile/debug
2006 cycle for low-level changes to SBCL itself, and a new
2007 :SB-AFTER-XC-CORE target feature to control the generation of
2008 the after-xc.core file needed by slam.sh.
2009 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2010 COMPILE-FILE is no longer supported, so that now every function
2011 gets an entry point, so that block compilation looks a little
2012 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2013 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2014 returns the number of bytes consed since the system started,
2015 rather than the number consed since the first time the function
2016 was called. (The new definition parallels ANSI functions like
2017 CL:GET-INTERNAL-RUN-TIME.)
2018 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2019 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2020 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2021 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2022 * Fasl file version numbers are now independent of the target CPU,
2023 since historically most system changes which required version
2024 number changes have affected all CPUs equally. Similarly,
2025 the byte fasl file version is now equal to the ordinary
2028 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2029 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2030 is no longer recognized. I apologize for this, because it was
2031 listed in SB-EXT as a supported extension, but I found that
2032 its existing behavior was poorly specified, as well as incorrectly
2033 specified, and it looked like too much of a mess to straighten it
2034 out. I have enough on my hands trying to get ANSI stuff to work..
2035 * many patches ported from CMU CL by Martin Atzmueller, with
2036 half a dozen bug fixes in pretty-printing and the debugger, and
2037 half a dozen others elsewhere
2038 * fixed bug 13: Floating point infinities are now supported again.
2039 They might still be a little bit flaky, but thanks to bug reports
2040 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2041 as flaky as they were.
2042 * The --noprogrammer command line option is now supported. (Its
2043 behavior is slightly different in detail from what the old man
2044 page claimed it would do, but it's still appropriate under the
2045 same circumstances that the man page talks about.)
2046 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2047 are now supported, and enabled by default. Thus, the compiler can
2048 handle many floating point and complex operations much less
2049 inefficiently. (Thus e.g. you can implement a complex FFT
2051 * The compiler now detects type mismatches between DECLAIM FTYPE
2052 and DEFUN better, and implements CHECK-TYPE more correctly, and
2053 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2054 thanks to patches from Martin Atzmueller.
2055 * various fixes to make the cross-compiler more portable to
2056 ANSI-conforming-but-different cross-compilation hosts (notably
2057 Lispworks for Windows, following bug reports from Arthur Lemmens)
2058 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2059 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2060 fixed thanks to Pierre Mai's CMU CL patches.
2061 * fixes to keep the system from overflowing internal counters when
2062 it tries to use i/o buffers larger than 16M bytes
2063 * fixed bug 45a: Various internal functions required to support
2064 complex special functions have been merged from CMU CL sources.
2065 (When I was first setting up SBCL, I misunderstood a compile-time
2066 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2067 * improved support for type intersection and union, fixing bug 12
2068 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2069 more obscure bugs as well
2070 * some steps toward byte-compiling non-performance-critical
2071 parts of the system, courtesy of patches from Martin Atzmueller
2072 * Christophe Rhodes has made some debian packages of sbcl at
2073 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2074 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2075 stable, but are nonetheless usable. When he's ready, I'd be happy
2076 to add them to the SourceForge "File Releases" section. (And if
2077 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2078 * new fasl file format version number (because of changes in
2079 internal representation of (OR ..) types to accommodate the new
2080 support for (AND ..) types, among other things)
2082 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2083 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2085 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2087 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2088 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2089 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2090 * DESCRIBE now works on structure objects again.
2091 * Most function call argument type mismatches are now handled as
2092 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2093 know whether the function will be redefined before the call is
2094 executed. (The compiler could flag local calls with full WARNINGs,
2095 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2096 it doesn't keep track of enough information to know whether calls
2097 are local in this sense.)
2098 * Compiler output is now more verbose, with messages truncated
2099 later than before. (There should be some supported way for users
2100 to override the default verbosity, but I haven't decided how to
2101 provide it yet, so this behavior is still controlled by the internal
2102 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2103 src/compiler/ir1util.lisp.)
2104 * Fasl file format version numbers have increased again, because
2105 support for the Gray streams extension changes the layout of the
2106 system's STREAM objects.
2107 * The Gray subclassable streams extension now works, thanks to a
2108 patch from Martin Atzmueller.
2109 * The full LOAD-FOREIGN extension (not just the primitive
2110 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2111 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2112 but like most other programs, it defaults to copying the Unix
2113 environment from the original process instead of starting the
2114 new process in an empty environment.
2115 * Extensions which manipulate the Unix environment now support
2116 an :ENVIRONMENT keyword option which doesn't smash case or
2117 do other bad things. The CMU-CL-style :ENV option is retained
2118 for porting convenience.
2119 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2120 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2122 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2124 * A patch from Martin Atzmueller seems to have solved the SIGINT
2125 problem, and as far as we know, signal-handling now works cleanly.
2126 (If you find any new bugs, please report them!)
2127 * The system no longer defaults Lisp source file names to types
2128 ".l", ".cl", or ".lsp", but only to ".lisp".
2129 * The compiler no longer uses special default file extensions for
2130 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2131 seems to expect a single default extension for all compiled code,
2132 and there's no compelling reason to try to stretch the standard
2133 to allow two different extensions.) Instead, byte-compiled files
2134 default to the same extension as native-compiled files.
2135 * Fasl file format version numbers have increased again, because
2136 a rearrangement of internal implementation packages made some
2137 dumped symbols in old fasl files unreadable in new cores.
2138 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2139 many fewer weird special cases.
2140 * Bug #17 (differing COMPILE-FILE behavior between logical and
2141 physical pathnames) has been fixed, and some related misbehavior too,
2142 thanks to a patch from Martin Atzmueller.
2143 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2144 by Tim Moore, ported to SBCL by Martin Atzmueller.
2145 * Martin Atzmueller fixed several filesystem-related problems,
2146 including bug #36, in part by porting CMU CL patches, which were
2147 written in part by Paul Werkowski.
2148 * More compiler warnings in src/runtime/ are gone, thanks to
2149 more patches from Martin Atzmueller.
2150 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2153 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2155 * DESCRIBE now works on CONDITION objects.
2156 * The debugger now handles errors which arise when trying to print
2157 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2159 * The build system now uses an additional file, customize-target-features.lisp,
2160 to allow local modifications to the target *FEATURES* list. (The point of
2161 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2162 debugging features enabled, without having to worry about propagating it
2163 into everyone's system when I do a "cvs update".) When no
2164 customize-target-features.lisp file exists, the target *FEATURES* list
2165 should be constructed the same way as before.
2166 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2167 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2168 warn about behavior which is undefined under the ANSI spec. Note: This
2169 is specified by ANSI, but it's not very popular with programmers.
2170 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2171 macro in the SBCL sources for an example of a workaround which you
2172 might use to make portable ANSI-standard code which does what you want.
2173 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2174 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2175 when it's used as a non-toplevel form. (This is required in order
2176 to implement the DEFCONSTANT-EQX macro.)
2177 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2178 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2179 funny things, due to bugs in the implementation of EVAL-WHEN
2180 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2181 non-toplevel DEFCONSTANTs are uncommon.)
2182 * The core file version number and fasl file version number have been
2183 incremented, because the old noncompliant DEFCONSTANT behavior involved
2184 calling functions which no longer exist, and because I also took the
2185 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2186 * fixed bug 1 (error handling before read-eval-print loop starts), and
2187 redid debugger restarts and related debugger commands somewhat while
2189 ** The QUIT debugger command is gone, since it did something
2190 rather different than the SB-EXT:QUIT command, and since it never
2191 worked properly outside the main toplevel read/eval/print loop.
2192 Invoking the new TOPLEVEL restart provides the same functionality.
2193 ** The GO debugger command is also gone, since you can just invoke
2194 the CONTINUE restart directly instead.
2195 ** The TOP debugger command is also gone, since it's redundant with the
2196 FRAME 0 command, and since it interfered with abbreviations for the
2198 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2200 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2201 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2202 some porting work by Martin Atzmueller)
2203 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2204 with a boatload of patches which he ported to SBCL. Now that those
2206 ** The system tries to make sure that its low-priority messages
2207 are prefixed by semicolons, to help people who like to use
2208 syntax highlighting in their ILISP buffer. (This patch
2209 was originally due to Raymond Toy.)
2210 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2211 patches originally written by Raymond Toy.
2212 ** The compiler understands coercion between single-value and
2213 multiple-VALUES type expressions better, getting rid of some very
2214 weird behavior, thanks to patches originally by Robert MacLachlan
2215 and Douglas Crosher.
2216 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2217 lambda lists, thanks to a patch originally by Pierre Mai.
2218 ** The system no longer bogusly warns about "abbreviated type
2220 ** The compiler gets less confused by inlining and RETURN-FROM,
2221 thanks to some patches originally by Tim Moore.
2222 ** The system no longer hangs when dumping circular lists to fasl
2223 files, thanks to a patch originally from Douglas Crosher.
2224 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2225 undefined function error.
2226 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2227 in structure slot initforms) for now, documented workaround instead:-|
2228 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2229 * fixed bug 5: added stubs for various Gray stream functions called
2230 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2231 installed, at least appropriate type errors are generated
2232 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2233 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2234 consistently in DEFMETHOD forms.
2235 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2236 it doesn't seem to affect SBCL after all
2237 * The C runtime system now builds with better optimization and many
2238 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2240 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2242 * The system is now under CVS at SourceForge (instead of the
2243 CVS repository on my home machine).
2244 * The new signal handling code has been tweaked to treat register
2245 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2246 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2247 downstream, e.g. in debug-int.lisp, has implicit dependencies
2248 on the unsignedness of integer representation of machine words,
2249 and that caused the system to bomb out with infinite regress
2250 when trying to recover from type errors involving signed values,
2251 e.g. (BUTLAST '(1 2 3) -1).)
2252 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2253 (This was one of the bugs Peter Van Eynde reported back in July.)
2254 * The system now uses code inspired by Colin Walters' O(N)
2255 implementation of MAP (from the cmucl-imp@cons.org mailing
2256 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2257 inline the MAP operation, and there is more than one
2258 sequence argument to the MAP call (so that it can't just
2259 do ETYPECASE once and for all based on the type of the
2260 single sequence argument). (The old non-inline implementation
2261 of the general M-argument sequence-of-length-N case required
2262 O(M*N*N) time when any of the sequence arguments were LISTs.)
2263 * The QUIT :UNIX-CODE keyword argument has been renamed to
2264 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2265 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2267 * Raymond Wiker's patches to port dynamic loading from Linux to
2268 FreeBSD have been added.
2269 * The BUGS file is now more nearly up to date, thanks in large part
2270 to Martin Atzmueller's review of it.
2271 * The debugger now flushes standard output streams before it begins
2272 its output ("debugger invoked" and so forth).
2273 * The core version number and fasl file version number have both
2274 been incremented, because of incompatible changes in the layout
2276 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2277 used to not be called for a saved Lisp image.)
2278 * Martin Atzmueller's version of a patch to fix a compiler crash,
2279 as posted on sbcl-devel 13 September 2000, has been installed.
2280 * Instead of installing Martin Atzmueller's patch for the
2281 compiler transform for SUBSEQ, I deleted the compiler transform,
2282 and transforms for some similar consing operations.
2283 * A bug in signal handling which kept TRACE from working on OpenBSD
2285 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2286 away by constant folding
2287 * The system now defines its address space constants in one place
2288 (in the Lisp sources), and propagates them automatically elsewhere
2289 (through GENESIS and the sbcl.h file). Therefore, patching the
2290 address map is less unnecessarily tedious and error-prone. The
2291 Lisp names of address space constants have also been systematized.
2292 * CVS tags like dollar-Header-dollar have been removed from
2293 the sources, because they have never saved me trouble and
2294 they've been source of trouble working with patches and other
2295 diff-related operations.
2296 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2297 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2299 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2301 * The system has been ported to OpenBSD.
2302 * The system now compiles with a simple "sh make.sh" on the systems
2303 that it's supported on. I.e., now you no longer need to tweak
2304 text in the target-features.lisp-expr and symlinks in src/runtime/
2305 by hand, the make.sh takes care of it for you.
2306 * The system is no longer so grossly inefficient when compiling code
2307 involving vectors implemented as general (not simple) vectors (VECTOR T),
2308 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2309 which dares to use the various sequence functions on non-simple
2310 vectors, takes less of a performance hit.
2311 * There is now a primitive type predicate VECTOR-T-P
2312 to test for the (VECTOR T) type, so that e.g.
2313 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2314 can now be compiled with some semblance of efficiency. (The old code
2315 turned the type declaration into a full call to %TYPEP at runtime!)
2316 * AREF on (VECTOR T) is still not fast, since it's still compiled
2317 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2318 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2319 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2320 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2321 without making full calls to SUBTYPEP at runtime.
2322 (Some analogous efficiency issues for non-simple vectors specialized to
2323 element types other than T, or for non-simple multidimensional arrays,
2324 have not been addressed. They could almost certainly be handled the
2325 same way if anyone is motivated to do so.)
2326 * The changes in array handling break binary compatibility, so
2327 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2328 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2329 instead of (VALUES T T).
2330 * By following the instructions that Dan Barlow posted to sbcl-devel
2331 on 2 July 2000, I was able to enable primitive dynamic object
2332 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2333 functionality is not implemented (since it calls ld to resolve
2334 library references automatically, requiring RUN-PROGRAM for its
2335 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2336 try to resolve library references) is now supported.
2337 * The system now flushes the standard output streams when it terminates,
2338 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2339 them at several other probably-convenient times, e.g. in each pass of
2340 the toplevel read-eval-print loop, and after evaluating a form given
2341 as an "--eval" command-line option. (These changes were motivated by a
2342 discussion of stream flushing issues on cmucl-imp in August 2000.)
2343 * The source transform for TYPEP of array types no longer assumes
2344 that an array whose element type is a not-yet-defined type
2345 is implemented as an array of T, but instead punts, so that the
2346 type will be interpreted at runtime.
2347 * There is now some support for cross-compiling in make.sh: each of
2348 the phases of make.sh has its own script. (This should be transparent
2349 to people doing ordinary, non-cross-compile builds.)
2350 * Since my laptop doesn't have hundreds of megabytes of memory like
2351 my desktop machine, I became more motivated to do some items on
2352 my to-do list in order to reduce the size of the system a little:
2353 ** Arrange for various needed-only-at-cold-init things to be
2354 uninterned after cold init. To support this, those things have
2355 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2356 symbols with such names are now uninterned after cold init).
2357 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2358 fasl files for cold load.
2359 ** Remove the old compiler structure pooling code (which used to
2360 be conditional on the target feature :SB-ALLOC) completely.
2361 ** Redo the representation of some data in cold init to be more compact.
2362 (I also looked into supporting byte compiled code at bootstrap time,
2363 which would probably reduce the size of the system a lot, but that
2364 looked too complicated, so I punted for now.)
2365 * The maximum signal nesting depth in the src/runtime/ support code has
2366 been reduced from 4096 to 256. (I don't know any reason for the very
2367 large old value. If the new smaller value turns out to break something,
2368 I'll probably just bump it back up.)
2369 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2371 * Many, many bugs reported by Peter Van Eynde have been added to
2372 the BUGS list; some have even been fixed.
2373 * While enabling dynamic object file loading, I tried to make the
2374 code easier to understand, renaming various functions and variables
2375 with less ambiguous names, and changing some function calling
2376 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2377 * While trying to figure out how to do the OpenBSD port, I tried to
2378 clean up some of the code in src/runtime/. In particular, I dropped
2379 support for non-POSIX signal handling, added various comments,
2380 tweaked the code to reduce the number of compilation warnings, and
2381 renamed some files to increase consistency.
2382 * To support the new automatic configuration functionality in make.sh,
2383 the source file target-features.lisp-expr has been replaced with the
2384 source file base-target-features.lisp-expr and the machine-generated
2385 file local-target-features.lisp-expr.
2386 * fixed a stupid quoting error in make.sh so that using CMU CL
2387 "lisp -batch" as cross-compilation host works again
2389 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2391 * DESCRIBE no longer tries to call itself recursively to describe
2392 bound/fbound values, so that it no longer fails on symbols which are
2393 bound to themselves (like keywords, T, and NIL).
2394 * DESCRIBE now works on generic functions.
2395 * The printer now prints less-screwed-up representations of closures
2396 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2397 * A private symbol is used instead of the :EMPTY keyword previously
2398 used to mark empty slots in hash tables. Thus
2399 (DEFVAR *HT* (MAKE-HASH-TABLE))
2400 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2401 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2402 now does what ANSI says that it should. (You can still get
2403 similar noncompliant behavior if bang on the hash table
2404 implementation with all the symbols you get back from
2405 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2406 This breaks binary compatibility, since tests for equality to
2407 :EMPTY are wired into things like the macroexpansion of
2408 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2410 * There's now a minimal placeholder implementation for CL:STEP,
2411 as required by ANSI.
2412 * An obscure bug in the interaction of the normal compiler, the byte
2413 compiler, inlining, and structure predicates has been patched
2414 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2415 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2417 * Missing ordinary arguments in a macro call are now detected even
2418 when the macro lambda list contains &KEY or &REST.
2419 * The debugger no longer complains about encountering the top of the
2420 stack when you type "FRAME 0" to explicitly instruct it to go to
2421 the top of the stack. And it now prints the frame you request even
2422 if it's the current frame (instead of saying "You are here.").
2423 * As specified by ANSI, the system now always prints keywords
2424 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2426 * The default initial SIZE of HASH-TABLEs is now smaller.
2427 * Type information from CLOS class dispatch is now propagated
2428 into DEFMETHOD bodies, so that e.g.
2429 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2431 is now basically equivalent to
2432 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2433 (DECLARE (TYPE SINGLE-FLOAT X))
2435 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2436 operation, without having to do run-time type dispatch.
2437 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2438 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2439 * Since I don't seem to be making big file reorganizations very often
2440 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2441 is overflowing my ability to conveniently back them up), I've finally
2442 checked the system into CVS. (The CVS repository is on my home system,
2443 not at SourceForge -- putting it on SourceForge might come later.)
2444 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2445 high-level GC-NOTIFY-FOO functions send their output. (There's
2446 still very little control of where low-level verbose GC functions
2447 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2448 less than it used to -- the GC-NOTIFY-FOO functions are now under
2449 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2450 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2451 in only one place in the source code, and propagates it automatically
2452 everywhere that it's needed. Thus e.g. when I bump the version from
2453 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2454 * The C source files now include boilerplate legalese and documentation
2455 at the head of each file (just as the Lisp source files already did).
2456 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2457 to his page will be replaced with a link to his new CLiki service.
2459 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2461 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2462 * The build process now looks for GNU make under the default name "gmake",
2463 instead of "make" as it used to. If GNU make is not available as "gmake"
2464 on your system, you can change this default behavior by setting the
2465 GNUMAKE environment variable.
2466 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2467 can build without error under CMU CL.
2469 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2471 * There is now a partial SBCL user manual (with some new text and some
2472 text cribbed from the CMU CL manual).
2473 * The beginnings of a profiler have been added (starting with the
2474 CMU CL profiler and simplifying and cleaning up). Eventually the
2475 main interface should be through the TRACE macro, but for now,
2476 it's still accessed through vaguely CMU-CL-style functions and macros
2477 exported from the package SB-PROFILE.
2478 * Some problems left over from porting CMU CL to the new
2479 cross-compilation bootstrap process have been cleaned up:
2480 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2481 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2482 part when getting rid of the compiler *BACKEND* stuff.)
2483 ** The value of *NULL-TYPE* was screwed up, because it was
2484 being initialized before the type system knew the final
2485 definition of the 'NULL type. This screwed up several key
2486 optimizations in the compiler, causing inefficiency in all sorts
2487 of places. (I found it because I wanted to understand why
2488 GET-INTERNAL-RUN-TIME was consing.)
2489 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2490 PROCLAIM FTYPE information. Unfortunately this broke binary
2491 compatibility again, since now the forms output by DEFGENERIC
2492 to refer to functions which didn't exist in 0.6.3.
2493 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2494 can use the new (as of 0.6.3) transform for SOME into MAP into
2496 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2497 values to (INTEGER 0 1000000), so that the time code will no longer
2498 occasionally get blown up by Linux returning 1000000 microseconds
2499 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2500 its output conform to the ANSI spec. (Alas, this makes its output
2501 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2502 * A full call to MAP NIL with a single sequence argument no longer conses.
2503 * fixes to problems pointed out by Martin Atzmueller:
2504 * The manual page no longer talks about multiprocessing as though
2505 it were currently supported.
2506 * The ILISP support patches have been removed from the distribution,
2507 because as of version 5.10.1, ILISP now supports SBCL without us
2508 having to maintain patches.
2509 * added a modified version of Raymond Toy's recent CMU CL patch for
2510 EQUALP comparison of HASH-TABLE
2512 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2514 * The system still can't cross-compile itself with
2515 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2516 entails), but at least it can compile more of itself that way
2517 than it used to be able to, and various buglets which were uncovered
2518 by trying to cross-compile itself that way have now been fixed.
2519 * This release breaks binary compatibility again. This time
2520 at least I've incremented the FASL file format version to 2, so that the
2521 problem can be detected reliably instead of just causing weird errors.
2522 * various new style warnings:
2523 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2524 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2525 ** using the lexical binding of a variable named in the *FOO* style
2526 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2527 as specified by ANSI.
2528 * *RANDOM-STATE* is no longer automatically initialized from
2529 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2530 default behavior of the system is to repeat its behavior every time
2531 it's run. If you'd like to change this behavior, you can always
2532 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2533 old convention there was no comparably easy way to get the system to
2534 repeat its behavior every time it was run.
2535 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2536 FTYPE declarations has been removed, in favor of their ANSI
2537 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2538 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2539 the types of their sequence arguments can be determined at compile time.
2540 This is done through a new open code expansion for MAP which eliminates
2541 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2542 argument types can be determined at compile time.
2543 * The optimizer now transforms COERCE into an identity operation when it
2544 can prove that the coerced object is already of the correct type. (This
2545 can be a win for machine generated code, including the output of other
2546 optimization transforms, such as the MAP transform above.)
2547 * Credit information has been moved from source file headers into CREDITS.
2548 * Source file headers have been made more standard.
2549 * The CASE macro now compiles without complaining even when it has
2552 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2554 * (Note that the way that the PCL macroexpansions were rewritten
2555 to accommodate the change in DEFGENERIC below breaks binary
2556 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2557 not run under sbcl-0.6.2. Once we get out of alpha releases,
2558 i.e. hit release 1.0.0, we'll probably try to maintain binary
2559 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2560 and sbcl-1.4.4. Until then, however, it might be fairly common
2561 for maintenance releases to break binary compatibility.)
2562 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2564 * The reporting of unhandled signals has been changed to print some
2565 explanatory text as well as the report form. (Previously only
2566 the report form was printed.)
2567 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2568 it defines, so that the compiler no longer issues undefined function
2569 warnings for compiled-but-not-yet-loaded generic functions.
2570 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2571 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2572 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2573 section of the ANSI spec are supported.
2574 * The "" nickname for the "KEYWORD" package has been removed.
2575 The reader still handles symbol tokens which begin with a package marker
2576 as keywords, but it doesn't expose its mechanism for doing so in the
2577 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2578 * The system now issues STYLE-WARNINGs for contradictory TYPE
2579 proclamations. (Warnings for contradictory FTYPE proclamations would
2580 be nice too, but those can't be done usefully unless the type system
2581 is made smarter about FUNCTION types.)
2582 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2583 systematized, so that "*target-*.lisp is supposed to exist only on the
2584 target and imply that there's a related file which exists on the
2585 host, and *host-*.lisp is supposed to exist only on the host and imply
2586 that there's a related file which exists on the target. This involves a
2587 lot of renaming. Hopefully the acute confusion caused by the renaming
2588 will be justified by the reduction in chronic confusion..
2589 ** runtime-type.lisp -> early-target-type.lisp
2590 ** target-type.lisp -> late-target-type.lisp
2591 ** early-host-format.lisp -> early-format.lisp
2592 ** late-host-format.lisp -> late-format.lisp
2593 ** host-error.lisp -> misc-error.lisp
2594 ** early-error.lisp -> early-target-error.lisp
2595 ** late-error.lisp -> late-target-error.lisp
2596 ** host-defboot.lisp -> early-defboot.lisp
2597 ** code/misc.lisp -> code/target-misc.lisp
2598 ** code/host-misc.lisp -> code/misc.lisp
2599 ** code/numbers.lisp -> code/target-numbers.lisp
2600 ** code/early-numbers.lisp -> numbers.lisp
2601 ** early-host-type.lisp -> early-type.lisp
2602 ** late-host-type.lisp -> late-type.lisp
2603 ** host-typep.lisp -> typep.lisp
2604 ** load.lisp -> target-load.lisp
2605 ** host-load.lisp -> load.lisp
2606 ** host-disassem.lisp -> disassem.lisp
2607 ** host-insts.lisp -> insts.lisp
2608 ** byte-comp.lisp -> target-byte-comp.lisp
2609 ** host-byte-comp.lisp -> byte-comp.lisp
2610 ** host-signal.lisp -> signal.lisp
2611 ** host-defstruct.lisp -> defstruct.lisp
2612 ** late-target-type.lisp -> deftypes-for-target.lisp
2613 Furthermore, several other previously target-only files foo.lisp (e.g.
2614 hash-table.lisp and random.lisp) have been split into a target-and-host
2615 foo.lisp file and a target-only target-foo.lisp file, with their key type
2616 definitions in the target-and-host part, so that the cross-compiler will
2617 know more about target types.
2618 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2619 gone away. In their place are various *BACKEND-FOO* variables
2620 corresponding to the slots of the old structure.
2621 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2622 into the target SBCL has been fixed.
2623 * The chill.lisp system for loading cold code into a running SBCL
2625 * Support for the CMU CL "scavenger hook" extension has been removed.
2626 (It was undocumented and unused in the CMU CL sources that SBCL was
2627 derived from, and stale in sbcl-0.6.1.)
2628 * Various errors in the cross-compiler type system were detected
2629 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2630 (enabling various consistency checks). Many of them were fixed,
2631 but some hard problems remain, so the compiler is back to
2632 running without *TYPE-SYSTEM-INITIALIZED* for now.
2633 * As part of the cross-compiler type system cleanup, I implemented
2634 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2635 * I have started adding UNCROSS calls throughout the type system
2636 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2637 on cross-compiler input files will be able to go away, and various
2639 * CONSTANTP now returns true for quoted forms (as explicitly required
2642 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2644 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2645 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2646 (MAKE-LIST -1). In the longer term, it ought to become true
2647 that declarations are assertions even at SAFETY 1. For now, it's not
2648 quite true even at SAFETY 3, but it's at least more nearly true..
2649 (Note that this change seems to increases the size of the system by
2650 O(5%) and to decrease the speed of the compiler by 20% or more.)
2651 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2652 for the problem of printing dozens of lines of distracting information
2653 about low-level system machinery as part of the top stack frame
2654 on entry to the debugger when an undefined function was called.
2655 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2656 is not reset to COMMON-LISP-USER.
2657 * Compilation of stuff related to dyncount.lisp has been made conditional
2658 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2659 smaller. The various dyncount-related symbols have been moved into
2660 a new "SB-DYNCOUNT" package.
2661 * tty-inspect.lisp has been renamed to inspect.lisp.
2662 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2663 feature has gone away. (When we eventually port to other flavors of
2664 libc and/or Unix, we'll try to make the differences between flavors
2665 invisible at the user level.)
2666 * Various other *FEATURES* tags, and/or their associated conditionals,
2667 have been removed if obsolescent, or given better documentation, or
2668 sometimes given more-mnemonic names.
2670 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2672 * tidied up "make.sh" script
2673 * tidied up system directory structure
2674 * better "clean.sh" behavior
2675 * added doc/FOR-CMUCL-DEVELOPERS
2676 * many many small tweaks to output format, e.g. removing possibly-confusing
2677 trailing #\. character in DESCRIBE-INSTANCE
2678 * (EQUALP #\A 'A) no longer signals an error.
2679 * new hashing code, including EQUALP hashing
2680 * tidied up Lisp initialization and toplevel
2681 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2682 * command line argument processing
2683 * added POSIX-GETENV function to deal with Unix-ish environment variables
2684 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2685 terminating SBCL on EOF
2686 * non-verbose GC by default
2687 * There is no more "sbcl" shell script; the sbcl file is now the C
2688 runtime executable (just like CMU CL).
2689 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2691 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2692 symbol and package information as Lisp native symbol and package objects
2693 instead of strings naming symbols and strings naming packages. This way,
2694 whenever packages are renamed (as in warm init), debug information is
2695 transformed along with everything else.
2696 * tweaked the optimization policy declarations which control the building
2697 of SBCL itself. Now, among other things, the system no longer saves
2698 source location debugging information. (This helps two problems at once
2699 by reducing SBCL size and by keeping SBCL from trying to look for its
2700 sources -- which may not exist -- when reporting errors.)
2701 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2702 debugging and testing purposes
2703 * cleaned up printing, making the printer call PRINT-OBJECT for
2704 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2705 methods, giving nearly-ANSI behavior
2706 * converted almost all special variables to use *FOO* naming convention
2707 * deleted PARSE-TIME functionality, since it can be done portably
2708 * moved some files out of cold init into warm init
2709 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2711 * regularized formatting of source files
2712 * added an install.sh script
2713 * fixed ridiculous memory usage of cross-compiler by making
2714 compiler/alloc.lisp not try to do pooling unless it can hook
2715 itself into the GC of the cross-compilation host. Now the system
2716 builds nicely on my old laptop.
2717 * added :SB-ALLOC in target-features.lisp-expr
2718 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2719 was not implemented)
2720 * re-did condition handling and note reporting in the compiler. Notes
2721 are no longer handled by signalling conditions. Style warnings
2722 and warnings are handled more correctly and reported in such a way
2723 that it's easy to find one or the other in your output (so that you
2724 can e.g. figure out which of many problems caused COMPILE-FILE to
2726 * changed the severity of several compiler warnings from full WARNING
2727 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2728 compiler note reporting so that it doesn't use the condition system
2729 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2730 COMPILE-FILE command)
2731 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2732 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2733 no longer supported, since their implementation was deeply intertwingled
2734 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2735 * removed bogus "support" for compiler macros named (SETF FOO), and
2736 removed the compiler macro for SETF INFO (but only after making a fool
2737 of myself on the cmucl-imp mailing list by posting a bogus patch for
2738 DEFINE-COMPILER-MACRO..)
2739 * Compiled files containing forms which have side effects on the Lisp
2740 reader (such as DEFPACKAGE forms) are now handled more correctly.
2741 (Compiler queuing of top level lambdas has been suppressed by setting
2742 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2743 * deleted various currently-unused source files, e.g. gengc.lisp. They
2744 may be added back at some point e.g. when porting to other architectures,
2745 but until they are it's distracting to distribute them and to try to
2747 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2748 there were so many of them they're just distractions, and UNCROSS is
2749 known to be able to handle the current sources
2750 * moved PROFILE functionality into TRACE, so that it will be clear
2751 how the wrapping and unwrapping of functions when you profile them
2752 interacts with the wrapping and unwrapping of functions when you
2753 trace them. (Actually, the functionality isn't there yet, but at least
2754 the interface specification is there. Hopefully, the functionality will
2755 arrive with some future maintenance release.)
2756 * removed host-oops.lisp
2757 * changed signature of QUIT function to allow UNIX-CODE argument
2758 * fixed READ-SEQUENCE bug
2759 * tweaked verbose GC output so that it looks more like the progress
2760 output that ANSI specifies for functions like LOAD
2761 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2762 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob