1 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2 * new feature: a build-time option (controlled by the :SB-UNICODE
3 keyword feature, enabled by default) for building the system with
4 support for the entire 21-bit character space defined by the
6 * new feature: the system now has rudimentary external-format
7 support; the primary user-visible change at this time is that
8 characters with the high bit set (such as lower-case-e-acute) will
9 print correctly to a terminal in a UTF-8 environment.
10 * minor incompatible change: BASE-CHAR no longer names a class;
11 however, CHARACTER continues to do so, as required by ANSI.
12 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
13 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
14 has been moved to the SB-EXT package (temporarily re-exported from
16 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
17 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
19 * fixed bug #308: non-graphic characters now all have names, as
20 required. (reported by Bruno Haible)
21 * bug fix: Cyclic structures and unprintable objects in compiler
22 messages no longer cause errors. (reported by Bruno Haible)
23 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
24 and READ-FROM-STRING all now return a primary value of NIL if
25 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
26 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
27 (reported by Bruno Haible for CMUCL)
28 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
29 do not designate a condition. (reported by Bruno Haible for
31 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
32 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
33 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
34 permitting resolution in favour of any of the conflicting symbols.
35 (reported by Bruno Haible for CMUCL)
36 * bug fix: EQUAL compiler optimizations is less aggressive on
37 strings which can potentially compare true despite having distinct
38 specialized array element types.
39 * FORMAT compile-time argument count checking has been enhanced.
40 (report from Bruno Haible for CMUCL)
41 * fixed some bugs revealed by Paul Dietz' test suite:
42 ** RENAME-PACKAGE allows all package designators as new package
44 ** constraint propagation and lambda variable substitution are
45 more cautious in dealing with partially deleted code.
46 ** compiler sometimes lost reoptimization passes.
47 ** CERROR, given a condition as condition designator, passes its
48 remaining arguments to the continue format control without
51 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
52 * enhancement: saving cores with foreign code loaded is now
53 supported on x86/NetBSD and sparc/Linux in addition to the previously
55 * bug fix: on some platforms repeated installations caused multiple
56 copies of HTML documentation to be installed -- should not happen
57 any more. (reported by Stefan Scholl)
58 * bug fix: parsing self-recursive alien record types multiple times
59 no longer causes infinite recursion. (reported by Thomas F. Burdick,
60 original patch by Helmut Eller for CMUCL)
61 * bug fix: stack-exhaustion detection works now on NetBSD as well.
62 (thanks to Richard Kreuter)
63 * bug fix: defining classes whose accessors are methods on existing
64 generic functions in other (locked) packages no longer signals
65 bogus package lock violations. (reported by François-René Rideau)
66 * bug fix: special variables as DEFMETHOD parameters no longer have
67 associated bogus type declarations. (reported by David Wragg and
69 * bug fix: read-write consistency on streams of element-type
70 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
71 * bug fix: redefiniton of the only method of a generic function with
72 no DEFGENERIC no longer emits a full WARNING. In addition,
73 redefinition of generic functions with no DEFGENERIC to an
74 incompatible lambda list now signals an error. (thanks to Zach
76 * bug fix: DEFGENERIC now works even when there's a function of the
77 same name in an enclosing lexical environment. (thanks to Zach
79 * fixed compiler failure, caused by instrumenting code during
80 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
81 * optimization: added loop analysis and improved register allocation
82 * fixed some bugs revealed by Paul Dietz' test suite:
83 ** POSITION on displaced vectors with non-zero displacement
84 returns the right answer.
85 ** (SIMPLE-STRING) is a valid type specifier for sequence
87 ** *PRINT-LEVEL* handling for slotless structures is pedantically
89 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
90 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
92 ** The justification version of the FORMAT ~< directive treats
93 non-zero minpad parameter correctly.
95 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
96 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
97 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
98 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
99 the supported interface.
100 * new feature: Single-stepping of code compiled with DEBUG 2 or
101 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
102 * new feature: saving cores with foreign code loaded is now
103 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
104 Timothy Moore's work for CMUCL)
105 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
106 parameters to * instead of NIL if no initform is supplied.
107 (reported by Johan Bockgaard)
108 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
109 correctly when FUNCALL appears as the car of the form. Note:
110 despite this FUNCALL forms are not currently subject to
111 compiler-macro expansion. (port of Raymond Toy's fix for the
112 same from CMUCL, reported by Johan Bockgaard)
113 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
114 (thanks for Teemu Kalvas)
115 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
116 case instead of terminating the iteration (thanks for Julian
117 Squires, Sean Champ and Raymond Toy)
118 * bug fix: incorrect expansion of defgeneric that caused a style
119 warning. (thanks for Zach Beane)
120 * bug fix: slot accessor effective method computation works properly
121 for classes with multiple non-standard applicable methods on
122 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
123 * on x86 compiler supports stack allocation of results of LIST and
124 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
125 CMUCL implementation by Gerd Moellmann)
126 * fixed some bugs revealed by Paul Dietz' test suite:
127 ** FORMAT strings with both the ~<~:;~> form of the justification
128 directive and pretty-printing directives cause an error.
130 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
131 * incompatible change: the internal functions
132 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
133 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
134 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
135 instead of the old functions.
136 * new feature: on platforms where "dladdr" is available foreign
137 function names now appear in backtraces. (based on Helmut Eller's
139 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
140 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
142 * documentation: ASDF manual is now distributed with SBCL.
143 * bug fix: SBCL can now load its contributed modules with REQUIRE
144 even if the system-provided entries have been removed from
145 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
147 * bug fix: backtraces involving undefined functions or assembly
148 routines are more informative. (thanks to Brian Downing)
149 * bug fix: mutually referent alien structures now work correctly.
150 (reported by Rick Taube)
151 * bug fix: structures defined by WITH-ALIEN can be referred to
152 within other definitions in the same WITH-ALIEN.
153 * bug fix: division operators (MOD, TRUNCATE and the like) with
154 constant zero divisors and integer dividends no longer generate
156 * bug fix: provide default methods for INPUT-STREAM-P and
157 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
158 * bug fix: improve the detection and resolution of MOP metacycles
159 (where effective method computation depends on the generic function
160 having its effective method computed). (reported by Bruno Haible)
161 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
162 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
163 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
164 * bug fix: pathnames with relative directory components can be
165 represented relative to default pathnames.
166 * optimization: in taking the GCD of bignums, reduce the two bignums
167 to approximately the same size (using Euclid's algorithm) before
168 applying the more sophisticated binary GCD. (thanks to Juho
170 * optimization: COUNT on bitvectors now operates word-at-a-time.
171 * optimization: ASH with a positive, but not necessarily constant,
172 (leftwards) shift, when in a modular context, is compiled to a
174 * fixed some bugs revealed by Paul Dietz' test suite:
175 ** FORMAT variable parameters ("~V<char>") are defaulted properly
176 if the corresponding argument is NIL.
177 ** FORMAT directives accepting a minpad parameter treat negative
179 ** literal commas as character parameters to FORMAT directives are
181 ** literal spaces directly after ~<Newline> directives within a
182 format-logical-block (~:< ~@:>) do not induce :FILL-style
183 conditional newlines.
184 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
185 as specified: it no longer includes conditional newlines).
186 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
188 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
189 :PER-LINE-PREFIX argument does not evaluate to a string.
191 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
192 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
193 the manual for details; for now, package locks can be disabled by
194 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
195 if no major problems are found then it is likely that they will be
196 compiled in unconditionally.
197 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
198 unsupported operators on all platforms. To load a shared library
199 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
200 object file, link it into a shared library outside of SBCL and
201 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
203 * bug workaround: ROOM T and the GC were not working together
204 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
205 reporting facility aren't preserved. That reporting has been
206 disabled, so now until and unless someone figures out how to make it
207 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
208 * minor incompatible change: as threatened around sbcl-0.8.0, the
209 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
210 The symbols are also exported from SB-PCL for backwards
211 compatibility, but more so than before SB-PCL should be treated as
212 an implementation-internal package.
213 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
215 * the SB-SPROF contrib now works on (most) non-x86 architectures.
216 It is known as of this release not to work on the Alpha, however.
217 * fixed bug #167: errors signalled due to illegal syntax in method
218 bodies are now more legible.
219 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
220 designators and can hence be used with TYPEP.
221 * fixed bug #333: CHECK-TYPE now ensures that the type error
222 signalled, if any, has the right object to be accessed by
223 TYPE-ERROR-DATUM. (reported by Tony Martinez)
224 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
225 5.1.2.3 for multiple-value place subforms. (reported by Kalle
227 * fixed bug #334: programmatic addition of slots using specialized
228 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
229 and :ALLOCATION :CLASS slots.
230 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
231 float exponents. (rereported by Peter Seibel)
232 * fixed a bug: #\Space (and other whitespace characters) are no
233 longer considered to be macro characters in standard syntax by
235 * fixed bug: initialization of condition class metaobjects no longer
236 causes an instance of the condition to be created. (reported by
238 * fixed bug: it is now possible to have slots such that
239 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
240 description is neither :INSTANCE nor :CLASS.
241 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
242 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
243 SLOT-VALUE-USING-CLASS), and no longer causes errors with
244 non-standard SLOT-DEFINITION-ALLOCATION values.
245 * fixed bugs: various race conditions handling exiting threads.
246 CL-PPCRE's thread torture test now passes.
247 * fixed arguably-a-bug: GC time proportional to number of threads in
248 system even when most of them are idle
249 * optimization: improved performance of BIT and SBIT on bit-vectors.
250 * .fasl file incompatibility: The fasl file version number has
251 been incremented because of changes associated with package locks.
253 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
254 * minor incompatible change: the system no longer provides
255 optimization hints (conditions which are TYPEP
256 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
257 mode; these hints are still emitted when higher SPEED optimization
259 * new contrib module: a sampling profiler (profiling by statistical
260 sampling, rather than by instrumenting functions) is available as
261 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
262 * the behaviour of the standard function ED is now customizeable by
263 third parties through a hook variable: see ED's documentation
264 string for information on the protocol.
265 * the compiler no longer emits efficiency notes for (FUNCALL X)
266 when the type of X is uncertain under default optimization
268 * fixed bug 276: mutating a binding of a specialized parameter to a
269 method to something that is not TYPEP the specializer is now
271 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
272 exhibit the required behaviour on the x86 platform. (thanks to
273 Peter van Eynde, Eric Marsden and Bruno Haible)
274 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
275 even for difficult arguments. (reported by Peter Graves)
276 * fixed bug 141a: the backquote printer now descends quoted
278 * fixed another bug in backquote printing: no more destructive
279 modification of the form's list structure. (reported by Brian
281 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
282 move between its address being taken and the call to
283 interrupt_thread, fixing a crashing race condition.
284 * the SB-POSIX contrib implementation has been adjusted so that it
285 no longer exhibits ridiculously poor performance when constructing
286 instances corresponding to C structs.
288 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
289 * minor incompatible change: the sb-grovel contrib now treats C
290 structures as alien (in the sense of SB-ALIEN) objects rather than
291 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
292 has implications for memory management of client code
293 (sb-grovel-returned objects must now be manually managed) and for
294 type safety (alien objects now have full types).
295 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
296 used to control emission of compiler diagnostics, rather than the
297 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
298 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
299 quality should be considered deprecated.
300 * install.sh now installs the user manual as well
301 * (not quite a new documentable feature, but worth considering in
302 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
303 beginnings of a semantically meaningful condition hierarchy is
304 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
306 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
307 designator as the defaults argument.
308 * fixed bug: Displaced arrays whose displaced-to array has become
309 too small now cause ARRAY-DIMENSION to signal an error, providing
310 for safer bounds-checking. (reported by Bruno Haible)
311 * fixed bug: DEFCLASS slot definitions with identical :READER and
312 :WRITER names now signal a reasonable error. (reported by Thomas
314 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
316 * fixed bug: Invalid slot specification errors now print correctly.
317 (thanks to Zach Beane)
318 * fixed bug 320: Shared to local slot value transfers in class
319 redefinitions now happen corrently from superclasses as
320 well. (reported by Bruno Haible)
321 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
323 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
324 improper lists correctly. (reported by Bruno Haible)
325 * fixed bug 313: source-transform for <fun-name> was erroneously
326 applied to a call of a value of a variable with name <fun-name>.
327 (reported by Antonio Menezes Leitao)
328 * fixed bug 307: The obsolete instance protocol ensures that
329 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
330 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
331 remove dead unknown-values globs from the middle of the stack.
332 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
333 easier to resume long computations after using *BREAK-ON-SIGNALS*
334 to diagnose and fix failures. (thanks to Nikodemus Siivola)
335 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
336 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
337 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
338 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
339 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
341 * fixed a (fairly theoretical) bug in string printing: if
342 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
343 does not have array-element-type equal to the most general string
345 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
346 function name. (thanks to Nikodemus Siivola)
347 * fixed bug: compile-time format string checker failed on
348 non-closed ~{. (reported by Thomas F Burdick)
349 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
350 don't warn on legal loop code involving more than one aggregate
351 boolean. (thanks to Nikodemus Siivola)
352 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
353 in keyword position to MAKE-PACKAGE was not being reported as
355 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
356 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
358 * fixed bugs 280 and 312: the checking for multiple definitions in a
359 file is less likely to become confused by uses of inline
361 * fixed bug: the #S reader macro performs the keyword coercion
362 specified for slot names. (reported by Kalle Niemitalo)
363 * fixed bug: lambda lists may contain symbols whose names start with
364 & but are not lambda-list-keywords; their occurrence triggers a
366 * fixed bug 321: define-method-combination argument lambda lists do
367 not cause invalid code to be generated when &optional or &aux
368 variables have default values. (reported by Bruno Haible)
369 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
370 have CLOS classes; this appears also to have fixed reported
371 instability in stack exhaustion detection.
372 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
373 MUFFLE-WARNING when no associated restart is present is now
375 * optimization: rearranged the expansion of various defining macros
376 so that each expands into only one top-level form in a
377 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
379 * optimization: used a previously little-used slot in symbols to
380 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
382 * fixed some bugs revealed by Paul Dietz' test suite:
383 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
385 ** Fixed an optimization bug related to inheritance of initforms
386 from local to shared slots.
387 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
388 ** CAST optimizer forgot to flush argument derived type.
389 ** print/read consistency on floats is now orders of magnitude
390 more likely. (thanks also to Bruno Haible for a similar report
392 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
393 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
394 for objects of type REAL. Make it so.
395 ** SXHASH is specified (infelicitously) to respect similarity,
396 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
397 it so. (thanks to Markus Ziegler)
398 ** on the Alpha, the compiler succeeds in compiling functions
399 returning a known number of arguments greater than 63.
400 ** fixed handling of invalid NIL arguments in keyword position
402 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
404 ** provided a readably-printable representation for RANDOM-STATE
406 ** ensured that pathnames, where they have a namestring, always
407 print using #P"..." syntax.
409 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
410 * Support for the forthcoming 2.0 version of the NetBSD kernel
411 running on x86 hardware has been added. (thanks to Perry
412 E. Metzger most immediately, and others for their past work)
413 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
414 current release version; SBCL's OpenBSD support had been broken
415 since about the time of OpenBSD's switch to ELF binary format.)
416 * [placeholder for DX summary]
417 ** user code with &REST lists declared dynamic-extent, under high
418 speed or space and low safety and debug optimization policy.
419 * The manual has been converted to Texinfo format and the debugger
420 chapter from the cmucl manual has been added.
421 * A facility has been added to extract documentation strings from
422 sbcl and store them as Texinfo-formatted snippets for inclusion in
423 the manual (via Texinfo's @include directive)
424 * bug fix: compiler emitted division in optimized DEREF. (thanks for
425 the test case to Dave Roberts)
426 * bug fix: multidimensional simple arrays loaded from FASLs had fill
427 pointers. (reported by Sean Ross)
428 * bug fix: PROFILE output is printed nicely even for large numerical
429 values. (thanks to Zach Beane)
430 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
431 greater than 32 handle EOF correctly.
432 * bug fix: on X86 an immediate argument of the IMUL instruction is
433 correctly printed in disassembly. (thanks to Lutz Euler)
434 * bug fix: class slots in redefined classes preserve their old
435 values. (thanks to Bruno Haible and Nikodemus Siivola)
436 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
437 succeeds. (reported by Marco Baringer)
438 * fixed some bugs revealed by Paul Dietz' test suite:
439 ** READ-SEQUENCE now works on ECHO-STREAMs.
440 ** RATIONALIZE works more according to its specification. (thanks
443 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
444 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
445 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
446 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
447 should matter to you only if you rebind the printer control
448 variables and then find you want different bindings in the
449 debugger than in the ordinary execution of your program.)
450 * The runtime build system has been tweaked to support building
451 (on SPARC/SunOS) using a C compiler which invokes Sun's own
452 assembler and linker. (thanks to Nikodemus Siivola)
453 * Unbound, undefined, undeclared variables now trigger full
454 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
455 more often programmer error than deliberate exploitation of undefined
457 * optimization: the hash algorithm for strings has changed to one
458 that is less vulnerable to spurious collisions. (thanks to Juho
460 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
461 needless bounds checking. (thanks to Juho Snellman)
462 * optimization: implemented multiplication as a modular
463 (UNSIGNED-BYTE 32) operation on the PPC backend.
464 * fixed some bugs revealed by Paul Dietz' test suite:
465 ** ADJUST-ARRAY now copies the datum in a zero rank array if
467 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
468 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
469 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
471 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
473 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
475 ** ECHO-STREAMs no longer attempt to echo the end of file value to
476 their output stream on EOF from read.
477 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
478 have been read to end-of-file.
479 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
481 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
482 description of determination of which consecutive characters
484 ** Printing the "Space" character with escaping on now yields "#\\ ",
485 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
486 ** Reading floating-point numbers with *READ-BASE* set to a number
487 less than 10 works correctly.
488 ** Reading floating-point numbers with *READ-BASE* set to a number
489 more than 10 works correctly.
490 ** Printing with *PRINT-READABLY* targets the standard readtable, not
491 the readtable currently in effect.
493 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
494 * minor incompatible change: parsing of namestrings on a physical
495 (Unix) host has changed; numbers after the final #\. in a
496 namestring are no longer interpreted as a version field. This is
497 intented to be largely invisible to the user, except that the
498 meaning of the namestring "*.*.*" has changed: it now refers to a
499 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
500 should usually be replaced by
501 (make-pathname :name :wild :type :wild :version :wild)
502 with the added benefit that this is more likely to be portable.
503 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
504 option to OPEN now signals an error if the file being opened
505 exists; this may have an impact on existing code.
506 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
507 signals received, on the PowerPC platforms (both Linux and
508 Darwin). (thanks to Pierre Mai for pointing out the location of
510 * several fixes on OS X: The system now builds and runs cleanly on
511 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
512 (thanks to Brian Mastenbrook)
513 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
514 second-resolution: integer multiples of 1/3600 between -24 and 24.
515 (thanks to Vincent Arkesteijn)
516 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
517 type when called with 1 argument; PEEK-CHAR checked type of
518 PEEK-TYPE only after having read first character from a
519 stream. (reported by Peter Graves)
520 * bug fix: the garbage collector now has much better locality
521 behaviour, and in particular no longer treats all memory as being
522 exhausted when many small objects point to each other in a deeply
524 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
525 recognized as being TYPEP their class.
526 * bug fix: the PUSHNEW documentation string has been corrected.
527 (thanks to Vincent Arkesteijn)
528 * bug fix: defaulting of the value for the last of an atypically
529 large number of multiple values being bound was not being
530 performed correctly on the Alpha or PPC platforms
531 * optimization: implemented multiplication as a modular
532 (UNSIGNED-BYTE 32) operation on the x86 backend.
533 * optimization: SEARCH on simple-base-strings can now be open-coded.
534 (see also contrib/compiler-extras.lisp for inspiration for
535 teaching the compiler about the Boyer-Moore algorithm).
536 * value, returned by MAX (and MIN) called with several EQUALP, but
537 not EQL, arguments now does not depend on compiler settings.
538 * fixed some bugs revealed by Paul Dietz' test suite:
539 ** in stack analysis liveness information is propagated from
540 non-local entry points.
541 ** pathwise CAST removing failed when the CAST node did not start
543 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
544 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
546 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
547 host is already defined.
548 ** RENAME-FILE works on streams instead of signalling an internal
550 ** PEEK-CHAR uses the current readtable when determining whether
551 or not a character is whitespace.
552 ** MERGE-PATHNAMES handles the case when the pathname does not
553 specify a name while the default-pathname specifies a version.
554 ** Pathnames now stand a better chance of respecting print/read
556 ** Attempting to use standardized file system operators with a
557 pathname with invalid :DIRECTORY components signals a
559 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
561 ** DIRECTORY on logical pathnames is more correct.
562 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
563 signal a TYPE-ERROR if their argument is not a stream.
564 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
565 designator argument does not designate a stream.
566 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
567 examining the synonym.
568 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
570 ** OPEN and WITH-OPEN-STREAM allow opening streams with
571 element-type larger than ([UN]SIGNED-BYTE 32).
573 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
574 * When built with the :SB-FUTEX feature, threaded builds now take
575 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
576 for faster/more reliable mutex and condition variable support.
577 * Incompatible change (but one you probably shouldn't have been using
578 anyway): the interface and code for arbitrating between multiple
579 threads in the same user session has been redesigned.
580 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
581 error when called without an explicit environment argument.
582 (thanks to Nikodemus Siivola)
583 * bug fix: buffered :DIRECTION :IO streams are less likely to become
584 confused about their position. (thanks to Adam Warner and Gerd
586 * bug fix: Pretty printing backquoted forms with unquotations in the
587 argument list position of various code constructs such as LAMBDA
588 now works correctly. (reported by Paul Dietz)
589 * bug fix: Pretty printing unquotations no longer loses all
590 stream position information.
591 * optimization: performance of string output streams is now less
592 poor for multiple small sequence writes.
593 * optimization: performance of CSUBTYPEP in the presence of complex
594 expressions involving CONS and NOT many times has been improved.
595 (reported by Paul Dietz)
596 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
598 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
599 streams for the REPL, for the debugger, and so on. (thanks to
601 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
602 * fixed some bugs revealed by Paul Dietz' test suite:
603 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
604 is ignored if it is too small, rather than propagating through
605 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
606 ** extremely complex negations of CONS types were not being
607 sufficiently canonicalized, leading to inconsistencies in
609 ** VALUES tranformer lost derived type.
611 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
612 * fixed a bootstrapping bug: the build process no longer assumes
613 that the various BOOLE-related constants have the same value in
614 host and target lisps. (noted by Paul Dietz' test suite on an
615 SBCL binary built from CLISP)
616 * The system can now be dynamically linked on the MIPS platform,
617 which enables dynamic loading of foreign code from Lisp. (thanks
618 to Ralf Baechle for discussions on the MIPS ABI)
619 * The system now records debugging information for its own source
620 files in a filesystem-position-independent manner, relative to
621 the "SYS" logical host.
622 * fixed a compiler bug: MV-LET convertion did not check references
623 to the "max args" entry point. (reported by Brian Downing)
624 * tweaked disassembly notes to be less confident about proclaiming
625 some instruction as an LRA. (thanks to Brian Downing)
626 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
627 now each have their own history, command character, and other
628 characteristics. (thanks to David Lichteblau)
629 * fixed some bugs revealed by Paul Dietz' test suite:
630 ** compiler failure in compiling LOGAND expressions including a
632 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
633 shift greater than 32.
634 ** FLUSH-DEST did not mark blocks for type check regeneration.
635 ** HANDLER-CASE failed to accept declarations in handler clauses
636 in some circumstances.
638 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
639 * New code in contrib/sb-introspect (still probably not entirely
640 stable yet) provides some support for smart Lisp development
641 environments like SLIME.
642 * The conditions signalled for errors occurring when loading .fasl
643 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
644 in a way which should help ASDF recover gracefully.
645 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
646 stuff has been cleaned up. If you code contrib/ stuff, this might
647 affect you, and you can look at contrib/README, contrib/STANDARDS,
648 and/or the 0.8.4.27 diff to check.
649 * In full calls the compiler now does not generate checks for declared
650 argument types for all arguments.
651 * various threading fixes
652 ** and some experimental patches which didn't make it into
653 the main tree for this release, but which are shipped in
654 contrib/experimental-thread.patch as a possible fix for some
655 failures (deadlock, spinning...) in GC-intensive multithreaded
657 * fixed PPC build problem (source code incompatibility of different
658 library versions): added offsetof() hackery which attempts to divine
659 where glibc maintainers put uc_mcontext today
660 * fixed bug 282: compiler does not trust type assertions while passing
661 arguments to a full call.
662 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
663 &OPTIONAL VALUES type parameter.
664 * fix bug 214: algorithm for noting rejected templates is now more
665 similar to that of template seletion. (also reported by rydis on
667 * fixed bug 141b: printing backquoted information readably and prettily
668 inserts a space where necessary.
669 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
670 (CHARACTER 10) are now reported as errors, rather than propagated
671 as unknown types. (reported by piso on #lisp)
672 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
673 with values NIL and :ERROR. (thanks to Milan Zamazal)
674 * fixed bug 191c: CLOS now does proper keyword argument checking as
675 described in CLHS 7.6.5 and 7.6.5.1.
676 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
677 longer raise an error; further, using a list as a for-as-arithmetic
678 counter now raises a meaningful error.
679 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
680 now understood by sequence creation functions such as MAKE-SEQUENCE
682 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
683 a STRING-INPUT-STREAM.
684 * compiler enhancement: SIGNUM is now better able to derive the type
686 * type declarations inside WITH-SLOTS are checked. (reported by
688 * fixed some bugs revealed by Paul Dietz' test suite:
689 ** incorrect optimization of TRUNCATE for a positive first
690 argument and negative second.
691 ** compiler failure in let-convertion during flushing dead code.
692 ** compiler failure while deriving type of TRUNCATE on an
693 interval, containing 0.
694 ** ASH of a negative bignum by a negative bignum count now returns
696 ** intersection of CONS types now canonicalizes properly, fixing
697 inconsistencies in SUBTYPEP.
699 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
700 * incompatible change: The --disable-debugger command line
701 option now clobbers the debugger at a more fundamental
702 level, by redefining #'INVOKE-DEBUGGER instead of by
703 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
704 is specified by ANSI to ignore *DEBUGGER-HOOK* and
705 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
706 enter the debugger REPL and then suffer recursive errors
707 because *DEBUG-IO* is also messed up in --disable-debugger mode;
708 while under the new system, BREAK in --disable-debugger mode
709 terminates the system just as an unhandled error would.
710 * fixed compiler performance when processing loops with a step >1;
711 * bug fix: DOCUMENTATION now retrieves generic function
712 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
713 support has been systematized, and now supports the methods
714 specified by ANSI, along with a default method and a method for
715 slot documentation. (reported by Nathan Froyd)
716 * bug fix: effective methods associated with a generic function are
717 no longer cached over a change of that generic function's method
718 combination. (reported by Andreas Fuchs)
719 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
720 names a non-existent directory. (thanks to Andreas Fuchs)
721 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
722 the PPC platform, lead to stack corruption; this has been fixed.
723 (reported by Rainer Joswig)
724 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
725 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
726 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
727 arithmetic in general, is now much more reliable on the PPC
729 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
730 platform now returns the right answer.
731 * optimization: restored some effective method precomputation in
732 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
733 precomputation is now tunable.
734 * optimization: compiler-internal data structure use has been
735 reviewed, and changes have been made that should improve the
736 performance of the compiler by about 20%.
737 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
738 simple-base-strings and simple-bit-vectors is improved.
739 * optimization: the optimization of 32-bit logical and arithmetic
740 functions introduced in version 0.8.3 on the x86 has been
741 implemented on the mips, ppc and sparc platforms; an
742 implementation of the same facility, but for 64-bit arithmetic,
743 has been added for the alpha.
744 * microoptimization: the compiler is better able to make use of the
745 x86 LEA instruction for multiplication by constants.
746 * bug fix: in some situations compiler did not report usage of
747 generic arithmetic in (SPEED 3) policy.
748 * bug 145b fix: compiler used wrong type specifier while converting
749 MEMBER-types to numeric.
750 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
752 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
753 index argument now works properly on the Alpha platform.
754 * bug fix: floating point exception treatment on the Alpha platform
756 * bug fix: FILE-POSITION works much better on string input and
757 output streams. (thanks to Nikodemus Siivola)
758 * bug fix: many threading/garbage collection symptoms sorted.
759 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
760 might be pseudo-atomic.
761 * internal change: Stopping for GC is now done with signals not
762 ptrace. GC is now done in whichever thread wanted it, instead of
764 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
766 * bug fix: result form in DO is not contained in the implicit
768 * incompatible change: ICR structure is changed; the value part of
769 CONTINUATION is now called LVAR; corresponding functions are
770 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
771 * added type deriver for ISQRT (thanks to Robert E. Brown).
772 * bug fix: better support for loading from the command line when an
773 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
775 * fixed some bugs revealed by Paul Dietz' test suite:
776 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
777 ** ROUND and FROUND now give the right answer when given very
778 small float arguments.
779 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
781 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
782 ** (GCD 0 <negative-integer>) returned <negative-integer>.
783 ** LCM should return a non-negative integer.
784 ** PARSE-INTEGER returned the index of a terminator instead of the
785 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
786 ** PARSE-INTEGER returned an incorrect index being applied to a
788 ** LCM with two arguments of 0 returns 0 rather than signalling
790 ** unsigned addition of a 32-bit constant with the high bit set no
791 longer causes an internal compiler error on the x86.
792 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
793 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
794 with negative last argument.
795 ** byte specifiers with zero size and position no longer cause
796 an error during type derivation.
797 ** bignum multiplication on the Alpha platform now returns the
799 * porting: The system now builds on SuSE AMD64, although it still
800 generates a 32-bit binary.
801 * .fasl file incompatibility: The fasl file version number has
802 been incremented (because of the changes to internal compiler
803 data structures referred to above).
805 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
806 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
807 more accurately, on the Darwin kernel running on PowerPC hardware.
808 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
809 * Compiler code deletion notes now signal a condition of type
810 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
811 an associated MUFFLE-WARNING restart.
812 * The compiler now performs limited argument count validation of
813 constant format strings in FORMAT, and where appropriate in ERROR,
814 CERROR and WARN. (thanks to Gerd Moellmann)
815 * New ASDF-INSTALL contrib can be used for automatic download and
816 installation of third-party Lisp code from CCLAN or other sites
818 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
819 which forces another thread to execute a function supplied by the
821 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
822 now accept and act upon their :ELEMENT-TYPE keyword argument.
823 (reported by Martin Atzmueller, Edi Weitz)
824 * bug fix: FILE-POSITION now accepts position designators up to
825 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
826 is the greater. (thanks to Patrik Nordebo)
827 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
828 Kalle Olavi Niemitalo)
829 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
830 printable. (reported by Eric Marsden)
831 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
832 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
833 * x86 bug fix in control stack exhaustion checking: now shows backtrace
834 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
835 (thanks to Stig Sandoe)
836 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
837 UNREAD-CHAR now correctly includes the unread character in the
838 target sequence. (thanks to Gerd Moellmann)
839 * bug fix in threaded builds: the system can now be suspended and
840 resumed by shell job control with minimal disruption.
841 * bug fixes in times and timezones >2038AD
842 * better handling of "where is GNU make?" problem in build scripts
843 (thanks to Nikodemus Siivola)
844 * new optimization: inside a named function any reference to a
845 function with the same name is considered to be a self-reference;
846 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
847 optimization quality.
848 * new optimization on x86: logical functions and + now have
849 optimized (UNSIGNED-BYTE 32) versions, which are automatically
850 used when the result is truncated to 32 bits.
851 * VALUES declaration is partially enabled.
852 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
853 * fixed some bugs revealed by Paul Dietz' test suite:
854 ** The system now obeys the constraint imposed by
855 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
856 types form a lattice under type intersection.
857 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
858 ** ASSOC now ignores NIL elements in an alist.
859 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
860 and (1+ MOST-POSITIVE-FIXNUM) answers.
861 ** The addition of a method with invalid qualifiers to a generic
862 function does not cause an error to be signalled immediately;
863 a warning is signalled, and the error is generated only on
864 calling the generic function.
865 * changed .fasl file version number, in part to add type codes for
866 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
867 obscure ANSI requirements
869 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
870 * fixed bug 148: failure to inline-expand a local function left
871 garbage, confusing the compiler.
872 * fixed bugs 3cd: structure slot readers perform type check if the
873 slot can have an invalid value (i.e. it is either not initialized
874 or can be written with a less specific slot writer).
875 * bug fix: the compiler now traps array references to elements off
876 the end of an array; previously, the bounds checking in some
877 circumstances could go off-by-one.
878 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
880 * type declarations for array element types now obey the description
881 on the CLHS page "Declaration TYPE", as per discussions on
882 sbcl-help around 2003-05-08. This means that a declaration
883 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
884 declaration, all references to BAR will be asserted or assumed
885 (with THE, so dependent on compiler policy) to involve objects of
886 type FOO. Note that no such declaration is implied in
887 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
888 * declared types of functions from the "Conditions"
889 chapter. (reported by Paul Dietz)
890 * bug fix: CERROR accepts a function as its first argument.
891 * bug fix: NTH an NTHCDR accept a bignum as index
892 arguments. (reported by Adam Warner)
893 * optimization: character compare routines now optimize comparing
894 against a constant character. (reported by Gilbert Baumann)
895 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
896 argument now works properly on the MIPS platform.
897 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
898 * repeated evaluation of the same DEFSTRUCT, a slot of which is
899 declared to have a functional type, does not cause an error
901 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
902 many :DEFAULT-INITARGS. (reported by Istvan Marko)
903 * fixed bug: if last continuation of a deleted block has a
904 destination, this destination should be deleted too. (reported by
906 * fixed a bug in the bootstrap process: the host compiler's values
907 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
908 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
909 test case from Patrik Nordebo)
910 * improved the ability of the disassembler on the PPC platform to
911 provide helpful disassembly notes.
912 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
913 the class in more cases than previously.
914 * bug fix: FILE-POSITION now understands :START and :END for
915 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
916 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
917 8) data. (thanks to David Lichteblau)
918 * bug fix: it is possible to add a method to a generic function
920 * bug fix: reader failed to signal END-OF-FILE inside an
921 object representation. (reported by Nikodemus Siivola)
922 * fixed some bugs revealed by Paul Dietz' test suite:
923 ** LAST and [N]BUTLAST should accept a bignum.
924 ** condition slot accessors are methods.
925 ** (VECTOR NIL) is a subtype of STRING.
927 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
928 * minor incompatible change: some nonsensical specialized lambda
929 lists (used in DEFMETHOD) which were previously ignored now signal
931 * minor incompatible change: the system is now aware of the types of
932 variables in the COMMON-LISP package, and will signal errors for
933 most violations of these type constraints (where previously they
934 were silently accepted).
935 * minor incompatible change: COMPILE-FILE now uses the freedom
936 afforded (ANSI 3.2.2.3) to use derived function types for
937 functions defined in the same file. This also permits the system
938 to warn on static type mismatches and function
939 redefinition. (Currently it does not work with high DEBUG level.)
940 * minor incompatible change: VALUES declaration is disabled.
941 * When issuing notes, the compiler now signals a condition of type
942 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
943 restart for use in user handlers. It is expected that the
944 COMPILER-NOTE condition will eventually become a condition
945 supertype to a hierarchy of note types, which will then be
946 handleable in a similar fashion. However, at the moment, no such
947 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
948 but it's an implementation detail, not a classification for the
950 * Changes in type checking closed the following bugs:
951 ** type checking of unused values (192b, 194d, 203);
952 ** template selection based on unsafe type assertions (192c, 236);
953 ** type checking in branches (194bc).
954 * A short form of VALUES type specifier has ANSI meaning (it has
955 increased the number of situations when SBCL cannot perform type
957 * fixed bug in DEFSTRUCT: once again, naming structure slots with
958 keywords or constants is permissible.
959 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
960 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
961 classes. (thanks to Antonio Martinez)
962 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
963 outputs FRESH-LINE or TERPRI, and no longer converts its stream
964 argument to a pretty-print stream. Instead, it leaves any such
965 operations to DESCRIBE-OBJECT methods.
966 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
968 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
969 lambda lists. (thanks to David Lichteblau)
970 * bug fix: Defining a generic function with a :METHOD-CLASS being a
971 subclass of STANDARD-METHOD no longer causes stack exhaustion.
972 (thanks to Gerd Moellmann)
973 * fixed bug 246: increased compilation speed of long
974 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
976 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
978 * DEFCONSTANT now throws a condition of type
979 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
980 constant to a non-EQL value; CONTINUE and ABORT restarts
981 respectively change and preserve the value.
982 * fixed bug 63: The code walker, part of the implementation of CLOS,
983 is now better at handling symbol macros.
984 * bug fix: There is no longer an internal implementation type named
985 CL:LENGTH. (reported by Raymond Toy)
986 * bug fix: In macro-like defining macros/special operators the
987 implicit block does not enclose the lambda list.
988 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
989 enclosed in parentheses) are not suitable as type specifiers, and
990 their use properly signals an error now.
991 * bug fix: An argument count mismatch for a type specifier in code
992 being compiled no longer causes an unhandled error at compile
993 time, but signals a compile-time warning.
994 * fixed simple vector readable printing
995 * bug fix: DESCRIBE takes more care over whether the class
996 precedence list slot of a class is bound before accessing it.
997 (reported by Markus Krummenacker)
998 * bug fix: FORMATTER can successfully compile pretty-printer format
999 strings which use variants of the ~* directive inside.
1000 * bug fix: SEARCH now applies its TEST predicate to the elements of
1001 the arguments in the correct order. (thanks to Wolfhard Buss)
1002 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1003 in type inference. (thanks to Robert E. Brown)
1004 * bug fix: Reading in symbols with an explicit package name of ""
1005 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1006 * fixed some bugs revealed by Paul Dietz' test suite:
1007 ** NIL is now allowed as a structure slot name.
1008 ** Arbitrary numbers, not just REALs, are allowed in certain
1009 circumstances in LOOP for-as-arithmetic clauses.
1010 ** Multiple class redefinitions before slot access no longer
1011 causes a type error.
1012 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1013 association between the name and a class.
1014 ** Generic functions with non-standard method-combination and over
1015 five methods all of which return constants no longer return NIL
1016 after the first few invocations. (thanks to Gerd Moellmann)
1017 ** CALL-NEXT-METHOD with no arguments now passes the original
1018 values of the arguments, even in the presence of assignment.
1019 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1021 ** DISASSEMBLE works with closures and funcallable instances.
1022 ** ADD-METHOD now returns the generic function, not the new method.
1023 ** FIND-METHOD signals an error if the lengths of the specializers
1024 is incompatible with the generic function, even if the ERRORP
1026 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1027 which its argument is a member.
1028 ** DEFCLASS only redefines the class named by its class-name
1029 argument if that name is the proper name of the class;
1030 otherwise, it creates a new class.
1031 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1032 of the UNBOUND-SLOT condition to the name of the slot.
1033 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1034 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1035 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1036 SLOT-MAKUNBOUND in the specified fashion.
1038 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1039 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1040 cross-compilation host. As a consequence, we can now bootstrap our
1041 way up to SBCL starting with a bare gcc toolchain and human-readable
1042 source code (first the source to CLISP, then the source to SBCL).
1043 * A contributed module containing a partial implementation of the
1044 simple-streams interface has been included. (thanks to Rudi
1046 * A contributed module implementing the RFC1321 Message Digest
1047 Algorithm, known as MD5, has been included.
1048 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1049 no longer has any effect, as the code controlled by this feature
1050 has been deleted. (As far as we know, no-one has ever built using
1051 this feature, and its semantics were confused in any case).
1052 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1053 work on conditions (as required by the ANSI specification),
1054 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1055 expected behaviour on conditions. Users should note, however,
1056 that such behaviour is not required by the ANSI specification,
1057 and so use of this behaviour may render their code unportable.
1058 * fixed some bugs revealed by Paul Dietz' test suite:
1059 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1061 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1062 ** SXHASH on condition objects no longer returns NIL.
1063 ** :ALLOCATION :CLASS slots are better treated; their values are
1064 updated on class redefinition, and initforms inherited from
1065 superclasses are applied.
1066 ** REMOVE-METHOD returns its generic function argument even when
1067 no method was removed.
1068 ** SHARED-INITIALIZE now initializes the values of the requested
1069 slots, including those with :ALLOCATION :CLASS.
1070 ** ALLOCATE-INSTANCE now works on structure classes defined via
1071 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1073 ** SLOT-EXISTS-P now works on conditions, as well as structures
1075 ** MAKE-LOAD-FORM now has the required methods on
1076 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1077 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1078 keyword, and now implements the SLOT-NAMES argument.
1079 ** methods with &OPTIONAL arguments no longer allow too many
1080 arguments to be passed in the call without error.
1081 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1082 option is consistent with the required arguments of the generic
1083 function lambda list.
1084 * bug fix: REQUIRE accepts a string designator. (Thanks to
1086 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1087 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1088 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1089 * bug fix: The compiler now checks for duplicated variables in macro
1091 * bug fix: SETQ on globals returns the correct value.
1092 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1093 not a COMPILER-ERROR (followed by some other strange error on
1094 choosing the CONTINUE restart).
1095 * bug fix: make.sh and friends are now more consistent in the way that
1096 they look for GNU "make".
1098 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1099 * experimental native threads support (on x86 Linux >=2.4 only).
1100 This is not compiled in by default: you need to add :SB-THREAD to
1101 the target features. See the "Beyond ANSI" chapter of the manual
1103 * fix for longstanding nonANSIism: The old distinction between
1104 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1105 The return value from CL:FIND-CLASS is now a CLOS class, and
1106 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1107 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1108 * An interface to the MetaObject Protocol, as described in Kiczales,
1109 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1110 MIT Press, 1991, is available from the SB-MOP package.
1111 * incompatible change: the SB-PCL package should now be considered
1112 a private implementation detail, and no longer a semi-private MOP
1114 * minor incompatible change: due to rearrangement for threads, the
1115 control stack and binding stack are now allocated at arbitrary
1116 addresses instead of being hardcoded per-port. Users affected by
1117 this probably have to be doing advanced things with shared
1118 libraries, and will know who they are.
1119 * minor incompatible change: Previously, all --eval forms used were
1120 processed with READ before any of them were processed with EVAL.
1121 Now each --eval form is processed with both READ and EVAL before
1122 the next --eval form is processed. (Thus package operations like
1123 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1124 work as the user might reasonably expect.)
1125 * minor incompatible change: *STANDARD-INPUT* is now only an
1126 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1128 * minor incompatible change: Y-OR-N-P is now character-oriented,
1129 not line oriented. Also, YES-OR-NO-P now works without errors.
1130 (thanks to Antonio Martinez)
1131 * sb-aclrepl module improvements: an integrated inspector, added
1132 repl features, and a bug fix to :trace command.
1133 * Known functions, which cannot be open coded by the backend, are
1134 considered to be able to check types of their arguments. (fixing
1135 a bug report by Nathan J. Froyd)
1136 * fixed a bug in computing method discriminating functions: It is
1137 now possible to define methods specialized on classes which have
1138 forward-referenced superclasses. (thanks to Gerd Moellmann)
1139 * fixed evaluation order in optional entries (reported by Gilbert
1141 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1142 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1143 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1144 required-by-AMOP NAME argument, as well as CLASS and
1145 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1146 * fixed bug 20: DEFMETHOD can define methods using names that are
1147 not the proper names of classes to designate class specializers.
1148 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1149 Unix file descriptors, instead of blowing up. (thanks to Antonio
1151 * Garbage collection refactoring: user-visible change is that a
1152 call to the GC function during WITHOUT-GCING will not do garbage
1153 collection until the end of the WITHOUT-GCING. If you were doing
1154 this you were probably losing anyway.
1155 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1156 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1157 TYPEP the latter but not the former.
1158 * The compiler issues a full WARNING for calls to undefined functions
1159 with names from the CL package.
1160 * MAP-INTO for a vector destination is open coded. (reported by
1161 Brian Downing on c.l.l)
1162 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1163 documentation string.
1164 * fixed some bugs revealed by Paul Dietz' test suite:
1165 ** COPY-ALIST now signals an error if its argument is a dotted
1167 ** Condition slots are now accessed more correctly in the presence
1168 of multiple initargs for a given slot.
1169 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1170 exclude restarts of the same name associated with a different
1172 ** DEFCLASS of forward-referenced classes with another
1173 forward-referenced class in the superclasses list no longer
1175 ** Condition slots are now initialized once each, not multiple
1176 times. (thanks to Gerd Moellmann)
1177 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1179 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1180 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1181 arguments contain duplicated elements.
1182 ** RESTART-CASE understands local macros.
1183 ** RESTART-CASE associates exactly its own restarts with a condition.
1184 ** ENDP in safe mode checks its argument to be of type LIST.
1185 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1186 in question is unbound.
1187 ** Optimized MAKE-INSTANCE functions no longer cause internal
1188 assertion failures in the presence of duplicate initargs.
1189 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1190 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1191 propagated even in the ctor optimized implementation of
1193 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1195 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1196 * a better implementation of SXHASH on (simple) bit vectors,
1197 measured both in execution speed and in distribution of results
1198 over the positive fixnums, has been installed. Likewise, a better
1199 implementation of EQUAL for simple bit vectors is now available.
1200 * fixed CEILING optimization for a divisor of form 2^k.
1201 * fixed bug 240 (emitting extra style warnings "using the lexical
1202 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1203 by Antonio Martinez)
1204 * fixed SXHASH, giving different results for NIL depending on type
1205 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1206 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1207 variable. (found by Rolf Wester)
1208 * SBCL does not ignore type declarations for special
1209 variables. (reported by rif on c.l.l 2003-03-05)
1210 * some bug fixes in contrib/sb-aclrepl/
1211 * fixed some bugs revealed by Paul Dietz' test suite:
1212 ** a bug in the CONS type specifier, whereby the CAR and CDR
1213 types got intertwined, has been fixed;
1214 ** the type system is now able to reason about the interaction
1215 between INTEGER and RATIO types more completely;
1216 ** APPEND, [N]REVERSE and NRECONC check that those their
1217 arguments, which must be proper lists, are really so;
1218 ** An array specialized to be unable to hold elements has been
1219 implemented, as required -- yes, really -- by ANSI;
1220 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1221 on malformed property lists;
1223 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1224 * incompatible packaging change: in line with Unix convention,
1225 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1226 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1227 * REQUIRE and PROVIDE are now optionally capable of doing something
1228 useful. See the documentation string for REQUIRE.
1229 * infrastructure for a managed SBCL contrib system: contributed
1230 modules in this release include:
1231 ** the ASDF system definition facility;
1232 ** an interface to the BSD Sockets API;
1233 ** an ACL-like convenience interface to the repl;
1234 (thanks to Kevin Rosenberg)
1235 ** an implementation of ROTATE-BYTE, with efficient implementation
1237 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1238 gives a closer approximation to the right answer than previously.
1239 (thanks to Raymond Toy)
1240 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1241 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1242 optional environment arguments, as required by ANSI.
1243 * fixed bugs in other functions taking environment objects, allowing
1244 calls with an explicit NIL environment argument to be compiled
1246 * fixed bug 228: primary return values from
1247 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1248 COMPILE or FUNCTION.
1249 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1250 :TYPE will no longer signal errors on innocuous objects.
1251 * fixed bug 231b: SETQ is better at respecting type declarations in
1252 the lexical environment.
1253 * fixed a bug in DEFCLASS: classes named by symbols with no or
1254 unprintable packages can now be defined.
1255 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1256 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1257 * fixed compiler failure related to checking types of functions.
1258 (reported by Robert E. Brown)
1259 * the compiler is now much more consistent in its error-checking
1260 treatment of bounding index arguments to sequence functions: in
1261 (SAFETY 3) code, errors will be signalled in almost all cases if
1262 invalid sequence bounding indices are passed to functions defined
1263 by ANSI to operate on sequences.
1264 * fixed a bug in the build procedure: documentation of SBCL-specific
1265 packages is now preserved and available in the final Lisp image.
1266 * lifted FDEFINITION lookup out of loops in the implementation of
1267 many list operations. (thanks to Robert E. Brown)
1268 * fixed a bug in the reader: the #n# reader macro now works for
1269 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1270 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1271 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1272 E. Brown and Tony Martinez respectively)
1273 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1274 SLOT-BOUNDP: in particular, it is now able to optimize them much
1275 better, and is now not vulnerable to having packages renamed.
1276 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1277 always called when a slot is not present in an instance. (thanks
1279 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1280 longer signal an error on unreading a character following EOF on
1281 the previous constituent stream. (thanks to Tony Martinez)
1282 * fixed some bugs revealed by Paul Dietz' test suite:
1283 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1284 not just nonnegative fixnums;
1285 ** the logical bit-array operators such as BIT-AND now accept an
1286 explicit NIL for their "opt-arg" argument (to indicate a
1287 freshly-consed result bit-array);
1288 ** ELT now signals an error on an invalid sequence index in safe
1290 ** the type system is now cleverer about negations of numeric
1291 types, and consequently understands the BIGNUM and RATIO types
1293 ** the type system is now cleverer about the interaction between
1294 INTEGER and RATIO types: while bugs still remain, many more
1295 cases are accurately computed;
1296 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1297 if it is in the last clause;
1298 ** CONSTANTLY now correctly returns a side-effect-free function in
1300 ** DECLARE is no longer treated as a special-operator; in
1301 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1302 * incremented fasl file version number due to the change in the
1303 DEFSTRUCT-SLOT-DESCRIPTION structure.
1305 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1306 * minor incompatible change: code processed by the "interpreter" or
1307 EVAL now has a compilation optimization policy of (DEBUG 2)
1308 (changed from (DEBUG 1)) to improve debuggability of interactive
1309 development, and to allow the use of the debug RETURN command in
1311 * an experimental implementation of the RETURN command for the
1312 debugger has been included. (thanks to Frederik Kuivinen)
1313 * fixed bug 62: constraints were not propagated into a loop.
1314 * fixed bug in embedded calls of SORT (reported and investigated by
1316 * fixed some bugs revealed by Paul Dietz' test suite:
1317 ** printing and reading of arrays with some dimensions having
1318 length 0 (thanks to Gerd Moellmann);
1319 ** BOA constructor with &AUX argument without a default value does
1320 not cause a type error;
1321 ** CONSTANTP now returns true for all self-evaluating objects.
1323 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1324 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1325 accessors that are related by inheritance, as specified in the
1326 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1327 Valtteri Vuorikoski)
1328 * The compiler is now able to inline functions that were defined in
1329 a complex lexical environment (e.g. inside a MACROLET).
1330 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1332 * Support for the upcoming FreeBSD-5.0 release has been included.
1333 (thanks to Dag-Erling Smorgrav)
1334 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1335 effect when it is not in a toplevel context.
1336 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1337 stand a better chance of being correct. (thanks to Gerd
1339 * fixed bug in COERCE, which now signals an error on coercing a
1340 rational to a bounded real type which excludes the expected
1342 * The compiler is now able to derive types more accurately from the
1343 COERCE and COMPILE functions.
1344 * fixed bug 223: functional binding is considered to be constant
1345 only for symbols in the CL package.
1346 * fixed bug 231: SETQ did not check the type of a variable being set
1347 (reported by Robert E. Brown)
1348 * A new optimization for MAKE-INSTANCE has been included, fixing
1349 various bugs (including relating to :ALLOCATION :CLASS slots and
1350 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1352 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1353 ** As required by ANSI, LOOP now disallows anonymous collection
1354 clauses such as COLLECT I in conjunction with aggregate boolean
1355 clauses such as THEREIS (= I 1);
1356 ** LOOP now signals an error when any variable is reused in the
1357 same loop (including the potentially useful construct analogous
1358 to WITH A = 1 WITH A = (1+ A);
1359 ** IT is only a special loop symbol within the first clause of a
1360 conditional loop clause;
1361 ** LOOP with a typed iteration variable over a hashtable now
1362 signals a type error iff it should.
1363 * fixed some other bugs revealed by Paul Dietz' test suite:
1364 ** FILE-STREAM now names the class previously known as FD-STREAM;
1365 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1366 argument) no longer signals an error;
1367 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1368 of the slot symbol, rather than using the current package
1369 ((:CONC-NAME "") continues to intern the slot's name in the
1371 * incremented fasl file version number, because of the incompatible
1372 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1373 of the new implementation of DEFINE-COMPILER-MACRO.
1375 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1376 * Support for building SBCL for MIPS platforms running in
1377 little-endian mode has now been checked in, and basic
1378 functionality on said platforms verified.
1379 * minor incompatible change: PCL now records the pathname of a file
1380 in which methods and the like are defined, rather than its
1382 * minor incompatible change: TRUENAME now considers the truename of
1383 a file naming a directory to be the pathname with :DIRECTORY
1384 component indicating that directory.
1385 * minor incompatible change: a NAMED clause in the extended form of
1386 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1387 reason for the previous behaviour is unclear.
1388 * more systematization and improvement of CLOS and MOP conformance
1389 in PCL (thanks to Gerd Moellman and Pierre Mai):
1390 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1392 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1393 primary methods with no specializers;
1394 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1396 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1397 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1398 FORWARD-REFERENCED-CLASSes; error reporting on
1399 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1401 ** SXHASH on CLOS instances now uses a slot internal to the
1402 instance to return different numbers on distinct instances,
1403 while preserving the same return value through invocations of
1405 ** DEFMETHOD signals errors when methods with longer incongruent
1406 lambda lists are added to generic functions;
1407 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1408 CLASS, as specified in AMOP;
1409 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1410 on the order returned by the primary method for classes of
1411 class STANDARD-CLASS;
1412 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1413 * fixed some bugs shown by Paul Dietz' test suite:
1414 ** DOLIST puts its body in TAGBODY;
1415 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1417 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1418 value producing form;
1419 ** if more variables are given to PROGV than values, extra
1420 variables are bound and made to have no value;
1421 ** NSUBSTITUTE on list arguments gets the right answer with
1423 ** ELT signals an error of type TYPE-ERROR when the index argument
1424 is not a valid sequence index;
1425 ** LOOP signals (at macroexpansion time) an error of type
1426 PROGRAM-ERROR when duplicate variable names are found;
1427 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1428 ** FUNCALL of special-operators now cause an error of type
1430 ** PSETQ now works as required in the presence of side-effecting
1431 symbol-macro places;
1432 ** NCONC accepts any object as its last argument;
1433 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1435 ** loop-for-as-package does not require a package to be explicitely
1437 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1439 * fixed bug 166: compiler preserves "there is a way to go"
1440 invariant when deleting code.
1441 * fixed bug 172: macro lambda lists with required arguments after
1442 &REST arguments now cause an error to be signalled. (thanks to
1444 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1445 bug. (thanks to Matthew Danish)
1446 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1448 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1449 arguments are lexically rebound. (thanks to Gerd Moellmann and
1451 * fixed bug 194: error messages are now more informative when there
1452 is no primary method applicable in a call to a generic
1453 function. (thanks to Gerd Moellmann)
1454 * fixed bug in command line argument checking (thanks to Julian
1456 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1457 (thanks to Matthew Danish)
1458 * incremented fasl file version number, because of the
1459 SXHASH-related changes in the layout of CLOS data structures
1461 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1462 * minor incompatible change: The runtime (the Unix executable named
1463 "sbcl") is now much pickier about the .core files it will load.
1464 Essentially it now requires .core files to descend from the same
1465 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1466 as the runtime does. (The intent is to prevent the crashes which
1467 can occur, and which can even be reported as mysterious failures,
1468 when people patch the sources or change the build parameters
1469 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1470 sbcl and .core files.)
1471 * fixed bug: VALUES-LIST is no longer optimized away.
1472 * fixed bug 142: The FFI conversion of C string values to Lisp
1473 string values no longer conses excessively. (thanks to Nathan
1474 Froyd porting Raymond Toy's fix to CMU CL)
1475 * began to systematize and improve MOP conformance in PCL (thanks to
1476 Nathan Froyd, Gerd Moellman and Pierre Mai):
1477 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1479 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1480 ** FINALIZE-INHERITANCE is now called on class finalization;
1481 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1482 argument precedence order.
1483 * fixed bug 202: The compiler no longer fails on functions whose
1484 derived types contradict their declared type.
1485 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1486 so it can be non-toplevel.
1487 * The fasl file version number has changed (because of the new
1488 implementation of DEFMACRO).
1489 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1490 safe code, that any length requirement by their type-specifier
1491 argument is valid. The exceptions to this are described in bug
1493 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1494 functions now check the types of their inputs as required by ANSI.
1495 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1496 introduced symbol is DECLAREd to be SPECIAL.
1497 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1498 * fixed bug: :COUNT argument to sequence functions may be negative
1499 * fixed bug: body of DO-SYMBOLS may contain declarations
1500 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1501 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1502 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1503 symbol macro only once
1504 * fixed printing of call frame when argument list is unavailable
1505 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1506 * compiler no longer signals WARNING on unknown keyword
1509 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1510 * A beta-quality port to the mips architecture running Linux,
1511 based on the old CMUCL backend, has been made. It has been tested
1512 on a big-endian kernel, and works sufficiently well to be able to
1513 rebuild itself; it has not been tested in little-endian mode.
1514 * fixed an inconsistency between gencgc.c and purify.c which made
1515 dumping/loading .core files unreliable
1516 * fixed bug 120a: The compiler now deals correctly with IFs where
1517 the consequent is the same as the alternative, instead of
1518 misderiving the return type. (thanks to Alexey Dejneka)
1519 * fixed bug 113: Logical pathnames are now dumpable (the logical
1520 host is resolved at load-time, throwing an error if it is not
1522 * fixed bug 174: FORMAT's error message is slightly clearer when a
1523 non-printing character is used in a format directive.
1524 * fixed several bugs in compiler checking of type declarations, i.e.
1525 violations of the Python "declarations are assertions" principle
1526 (thanks to Alexey Dejneka)
1527 * fixed several bugs in PCL's error checking (thanks to Gerd
1529 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1531 * fixed bug in compilation of functions as first class values
1532 (thanks to Antonio Martinez-Shotton)
1533 * The compiler's handling TYPE-ERRORs which it can prove will
1534 inevitably happen at runtime has been cleaned up and corrected
1535 in several ways. (thanks to Alexey Dejneka)
1536 * improved argument type checking for various basic arithmetic
1537 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1538 lavished on them in the past that they can be compiled in many
1539 ways in different special cases
1540 * fixed bug 181: compiler checks validity of user supplied type
1542 * cleaned up code flushing in optimization: Function calls which
1543 should signal errors for safety purposes (e.g. which ANSI says
1544 should signal errors when their arguments are of incorrect type)
1545 are no longer optimized away.
1546 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1547 * incremented fasl file version number, because changes in the
1548 implementation of sequence functions like COERCE caused
1549 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1550 in old inline expansions) to become undefined. (Actually these
1551 changes were later undone, so we might very well be binary
1552 compatible with 0.7.7 after all, but leaving the version number
1553 incremented seemed like the simplest and most conservative
1556 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1557 * An alpha-quality port to the parisc architecture running Linux,
1558 based on the old CMUCL backend, has been made. This, even more so
1559 than the other backends, should be considered still a work in
1560 progress; known problems include that the Linux kernel in 64-bit
1561 mode does not propagate the correct sigcontext structure to
1562 userspace, and consequently SBCL on a parisc64 kernel will not
1564 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1565 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1566 suppressed.) Also now that the compiler is looking at declarations
1567 in the environment, it checks optimization declarations as well,
1568 and suppresses inlining when (> DEBUG SPEED).
1569 * More fixes have been made to treatment of floating point exception
1570 treatment and other Unix signals. In particular, floating point
1571 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1572 * The detection and handling of control stack exhaustion (infinite
1573 or very deeply nested recursion) has changed. Stack exhaustion
1574 detection is now done by write-protecting pages at the OS level
1575 and applies at all optimization settings; when found, a
1576 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1577 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1578 be caught using IGNORE-ERRORS.
1579 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1580 correctly when transforming recursive LABELS functions to LETs.
1581 (thanks to Alexey Dejneka)
1582 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1583 that are names of constants or global variables.
1584 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1585 alien routines with docstrings.
1586 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1587 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1589 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1590 (thanks to Eric Marsden)
1591 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1592 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1593 * Bug fix: The SPARC backend can now compile functions involving
1594 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1595 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1596 to a functions expecting a PATHNAME-DESIGNATOR.
1597 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1598 lambda lists. (thanks to Alexey Dejneka)
1599 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1600 functions so that EXPORTing the name of the class doesn't cause
1601 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1602 to Antonio Martinez for reporting this)
1603 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1604 constant-folded without failing an assertion. (thanks to Einar
1605 Floystad Dorum for reporting this)
1606 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1607 types are now dealt with more correctly by the compiler.
1608 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1609 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1610 behaviour analogous to RENAME-FILE. This puts its behaviour more
1611 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1613 * The fasl file version number has changed again. (because of the
1614 bug fix involving the names of PCL MAKE-INSTANCE functions)
1616 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1617 * bug fix: Floating point exceptions are treated much more
1618 consistently on the x86/Linux and PPC/Linux platforms.
1619 * Array initialization with :INITIAL-ELEMENT is now much faster for
1620 cases when the compiler cannot open code the array creation, but
1621 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1622 array accesses have also seen a speed increase.
1623 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1624 specified. (This was at the root of some bad interactions between
1625 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1627 * bug fix: Internal error arguments for undefined functions are now
1628 computed correctly on the PPC/Linux platform.
1629 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1630 Raymond Toy's patch for CMU CL)
1631 * Support for the Solaris 9 operating environment has been included
1632 (thanks to Daniel Merritt)
1633 * A very ugly but hopefully complete draft of the missing FFI chapter
1634 of the manual has been created by reformatting the corresponding
1635 CMU CL manual chapter into (currently very ugly and incoherent)
1636 DocBook and bringing it up to date for SBCL behavior. Thus, the
1637 manual is now essentially complete, at least by my extreme
1638 once-and-only-once standards, whereby it's acceptable to refer to
1639 the doc strings of SB-EXT functions as the primary documentation.
1640 * The fasl file version number has changed again, due to cleanup of
1641 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1642 is no longer a static symbol.)
1644 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1645 * SBCL now builds with OpenMCL (version 0.12) as the
1646 cross-compilation host; also, more progress has been made toward
1647 bootstrapping under CLISP.
1648 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1650 * bug 158 fixed: The compiler can now deal with integer loop
1651 increments different from 1; fixing this turned out also to fix
1653 * bug 169 fixed: no more bogus warnings about using lexical bindings
1654 despite the presence of perfectly good SPECIAL declarations (thanks
1655 to David Lichteblau)
1656 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1657 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1658 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1660 * bug 180 fixed: Method combination specifications no longer ignore
1661 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1662 * bug fix: Structure type predicate functions now check their argument
1663 count as they should.
1664 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1665 correctly. (thanks to Pierre Mai)
1666 * minor incompatible change: The --noprogrammer option is deprecated
1667 in favor of the new --disable-debugger option, which is very similar.
1668 (The major difference is that it takes effect at a slightly different
1669 time at startup, causing handling of errors in --sysinit and
1670 --userinit files will be affected differently.) The
1671 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1672 been added to allow this functionality to be controlled from ordinary
1673 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1674 maintainers, who might want to run non-interactive scripts to
1675 build SBCL cores which will later be used interactively.)
1676 * minor incompatible change: The LOAD function no longer, when given
1677 a wild pathname to load, loads all files matching that pathname.
1678 Instead, an error of type FILE-ERROR is signalled.
1680 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1681 * bug 147 fixed: The compiler preserves its block link/count
1682 invariants more correctly now so that it doesn't crash. (thanks
1684 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1686 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1687 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1688 no-value-for-this-character as NIL (as specified by ANSI).
1689 * HOST-NAMESTRING on physical pathnames now returns a string that is
1690 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1691 (thanks to Christophe Rhodes)
1692 * The Alpha port handles icache flushing more correctly. (thanks to
1694 * More progress has been made toward bootstrapping under CLISP. (thanks
1695 to Christophe Rhodes)
1696 * The fasl file format has changed again, because dynamic loading
1697 on OpenBSD (which has non-ELF object files) motivated some cleanups
1698 in the way that foreign symbols are transformed and passed around.
1699 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1700 is no longer treated as whitespace by the reader, but instead as
1701 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1702 |A
\7fB|, instead of A as it used to.
1704 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1705 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1706 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1707 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1708 this as of 0.7.1.45, but was left out of the previous news section
1709 (thanks to Dan Barlow)
1710 * SBCL now runs on the Solaris operating system on SPARC architectures
1711 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1712 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1713 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1714 * SPARC backend cleanups, allowing builds of cores optimized for V8
1715 and V9 SPARCS, and also emission of code targeted to a particular
1716 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1718 * SBCL is closer to bootstrapping under CLISP, thanks to various
1719 fixes by Christophe Rhodes.
1720 * The fasl file format has changed again, to allow the compiler's
1721 INFO database to support symbol macros.
1722 * The user manual (in doc/) is formatted into HTML more nicely.
1723 (thanks to coreythomas)
1724 * The system is smarter about SUBTYPEP relationships, especially
1725 those involving NOT types (including types such as ATOM which are
1726 represented internally using NOT types). Thus SUBTYPEP is less
1727 likely to return (VALUES NIL NIL) in general, and in particular
1728 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1730 * The fasl file format has changed again, because the internal
1731 representation of types now includes a new slot to support the new
1732 SUBTYPEP-of-NOT-types logic.
1733 * (not a change in the main branch of SBCL, but a related prototype
1734 which can hopefully be merged into the main branch of SBCL in the
1735 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1736 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1737 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1738 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1739 dispatch macro character combinations. (thanks to Alexey Dejneka)
1740 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1741 that superficially look like logical namestrings correctly.
1742 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1744 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1745 default supplied-p) for &optional and &key arguments. (thanks to
1748 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1749 * incompatible change: The compiler is now less aggressive about
1750 tail call optimization, doing it only when (> SPACE DEBUG) or
1751 (> SPEED DEBUG). (This is an incompatible change because there are
1752 programs which relied on the old CMU-CL-style behavior to optimize
1753 away their unbounded recursion which will now die of stack overflow.)
1754 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1755 for non-GENCGC systems has been increased to 20M (since that
1756 seems much closer to the likely performance optimum for modern
1757 systems than the old 4M value was)
1758 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1759 and *DEBUG-PRINT-LEVEL*
1760 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1761 of CMU CL's support for SPARC, and various endianness and other
1762 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1763 * new syntactic sugar for the Unix command line: --load foo.bar is now
1764 an alternate notation for --eval '(load "foo.bar")'.
1766 ** The system now detects stack overflow and handles it gracefully,
1767 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1768 optimization settings. (This is a good thing in general, and
1769 its introduction in this version should be particularly timely
1770 for anyone whose code fails because of suppression of tail
1772 ** The system now hunts for the C variable "environ" in a more
1773 devious way, to avoid segfaults when the C library version differs
1774 between compile time and run time. (thanks to Christophe Rhodes)
1775 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1776 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1777 ** The compiler no longer issues bogus style warnings for undefined
1778 classes in the same source file as the DEFCLASSes which defined
1779 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1781 ** fixes in CONDITION class precedence list for undefined function
1782 errors (thanks to Alexei Dejneka)
1783 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1784 correctly. (thanks to Dan Barlow)
1785 ** portability fixes aiming at bootstrapping under CLISP (thanks
1786 to Dave McDonald and Christophe Rhodes)
1787 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1788 ** fixes in type translation and and type inference (thanks to
1790 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1791 ** various fixes in the new ports (thanks to Dan Barlow)
1792 * several changes related to debugging:
1793 ** suppression of tail recursion, as noted above
1794 ** stack overflow detection, as noted above
1795 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1796 is now the default. (For some time encapsulation has been more
1797 reliable than the breakpoint-based :ENCAPSULATE NIL
1798 implementation, at least on X86 systems; and I just noticed that
1799 encapsulation also seems closer to the spirit of the ANSI
1802 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1804 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1805 up properly again. (There was a packaging bug in 0.7.0 which
1806 left their definitions in SB-SYS::LOAD-FOREIGN and
1807 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1808 vital for most things which interface to C-level interfaces,
1809 like extensions working with sockets or databases or
1810 Perl-compatible regexes or whatever, and the need to fix
1811 this bug is the main reason that 0.7.1 was released so
1813 ** DEFGENERIC is now choosier about the methods it redefines, so that
1814 reLOADing a previously-LOADed file containing DEFGENERICs does
1815 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1816 cycle now works as it should. (thanks to Alexey Dejneka)
1817 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1818 fixed by Christophe Rhodes. (He actually submitted this patch
1819 months ago, and I delayed until after 0.7.0.)
1820 ** Bug 111 (internal compiler confusion about runtime checks on
1821 FUNCTION types) was fixed by Alexey Dejneka.
1822 * Some internal cleanups (getting rid of variables which aren't
1823 needed now that the byte interpreter is gone) caused the fasl
1824 file format number to change again.
1826 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1827 * major incompatible change: The default fasl file extension, i.e. the
1828 default extension for files produced by COMPILE-FILE, has changed
1829 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1831 ** There are many changes in the implementation of the compiler.
1832 SBCL is now essentially a compiler-only implementation of ANSI
1833 Common Lisp. EVAL still "interprets" a few special cases, but
1834 almost all the interesting cases are handled by creating
1835 a LAMBDA expression, calling COMPILE on it, then calling
1836 FUNCALL on the result.
1837 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1838 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1839 Since the code is newer, there might still be some new bugs
1840 (though not as many as before Martin Atzmueller's fixes:-). But
1841 the new code is substantially simpler and clearer, and hopefully
1842 any remaining bugs will be simpler, less fundamental, and more
1843 fixable then the bugs in the old code.
1844 ** The revised compiler is still a little unsteady on its feet.
1846 *** The debugging information it produces (particularly the names
1847 of FUNCTION objects) is sometimes much less useful than what
1848 the old compiler produced.
1849 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1850 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1851 within a MACROLET) has been temporarily weakened.
1852 ** There are new compiler optimizations for various functions:
1853 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1854 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1855 *** the math functions TRUNCATE, FLOOR, and CEILING
1856 *** the function-of-all-trades COERCE
1857 Mostly these should be transparent, but there's one
1858 potentially-annoying problem (bug 117): when the compiler
1859 inline-expands a function and does type analysis on the result,
1860 it can create control paths which have type mismatches, and
1861 when it can't prove that those control paths aren't taken,
1862 it will issue WARNINGs about the type mismatches. This is
1863 a particular problem in practice for the new sequence functions.
1864 It's not clear how this should be fixed, and for now, a
1865 workaround is given in the entry for 117 in the BUGS file.
1866 ** (Because of the interaction between the two previous items --
1867 occasional inlining problems and new inline expansions -- some
1868 of the new sequence function optimizations won't really kick in
1869 completely until debugging information, and then inlining, are
1870 straightened out in some future version.)
1871 * minor incompatible changes:
1872 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1873 DIRECTORY no longer implicitly promotes NIL slots of its
1874 pathname argument to :WILD. In particular, when you ask for the
1875 contents of a directory (which you used to be able to do without
1876 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1877 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1878 ** changes in behavior that ANSI explicitly defines to be
1879 implementation dependent:
1880 *** The new compiler-only implementation still conforms with ANSI,
1881 but acts a little different than before. Besides the obvious
1882 changes in performance tradeoffs (that the cost per form passed
1883 to EVAL has gone up, and the cost per form executed by EVAL
1884 has gone down), the behavior of the system changes a little
1885 because there are no longer any interpreted function objects.
1886 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
1887 e.g. doing COMPILE on the output of interactive DEFUN is
1889 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
1891 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
1892 has changed from (:CL) to NIL.
1893 *** The CHAR-NAME of unprintable ASCII characters which, unlike
1894 e.g. #\Newline and #\Tab, don't have names specified in the
1895 ANSI Common Lisp standard, is now based on their ASCII symbolic
1896 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
1897 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
1898 are no longer used for output.
1899 ** changes in internal implementation constants:
1900 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
1901 4 million. (If your application spends a lot of time GCing and
1902 you have a lot of RAM, you might want to experiment with
1903 increasing it even more.)
1904 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
1905 However, almost all old code should still continue to work without
1906 immediate update, as SB-C-CALL is now a (deprecated) nickname
1908 ** Old operator names in the style DEF-FOO are now deprecated in
1909 favor of new corresponding names DEFINE-FOO, for consistency with
1910 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
1911 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
1912 internal symbols, but a few supported extensions like
1913 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
1914 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
1915 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
1916 etc. as you get deeper into recursive calls to the debugger
1917 command loop, instead of the old "5]", "5]]", "5]]]"
1918 sequence. (I was motivated to do this when squabbles between
1919 ILISP and SBCL left me very deeply nested in the debugger. In the
1920 short term, this change will probably provoke more ILISP/SBCL
1921 squabbles, but hopefully it will be an improvement in the long run.)
1922 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
1923 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
1924 function, since declaiming return types involving aliens is
1925 (1) annoyingly messy to do by hand and (2) vital to efficient
1926 compilation of code which calls such functions.
1927 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
1928 longer reexported by the SB-EXT package. They're solely useful
1929 for alien code, so it seems more logical that you should get
1930 them from the SB-ALIEN package, not in SB-EXT.
1931 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
1932 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
1933 features. Instead, the code that they used to control is always
1934 built into the system.
1935 * many other bug fixes
1936 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
1937 advantage of the new EVAL-WHEN stuff and to clean them up in
1938 general, and they are now more ANSI-compliant in a number of
1939 ways. Martin Atzmueller is responsible for a lot of this.
1940 ** Besides the cleanups discussed above, Martin Atzmueller fixed
1942 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
1943 *** correct ERROR type for various file operations
1944 *** some fixes for Lisp streams
1945 *** DEFMETHOD syntax checking
1946 *** changing old weird representation of debug information as
1947 strings (which, among their other deficiencies, don't transform
1948 correctly when you rename packages, and don't change their
1949 print representation when you change things like *PACKAGE*
1950 and *PRINT-LENGTH*) to symbols and lists of symbols
1951 He also made several improvements and fixed several bugs in DESCRIBE.
1952 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
1954 *** misbehavior of WRITE-STRING/WRITE-LINE
1955 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
1956 and several other LOOP problems as well
1957 *** DIRECTORY when similar filenames are present
1958 *** DEFGENERIC with :METHOD options
1959 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
1960 *** bug in the optimization of ARRAY-ELEMENT-TYPE
1961 *** argument ordering in FIND with :TEST option
1962 *** mishandled package designator argument in APROPOS-LIST
1963 *** various problems in the backquote readmacro
1964 *** a bug in APROPOS
1965 *** probably some others that I'm not describing very well here,
1966 since the CVS log documents them by reference to sbcl-devel
1967 messages, and the SourceForge archives aren't working well.:-(
1968 ** Dan Barlow improved the Alpha port (and is making progress on the
1969 PPC port, for those of you who think different).
1970 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
1971 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
1972 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
1973 continues to work on the SPARC port (for those of you in a position
1974 to look down upon our little PC-compatible boxes from a great height).
1975 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
1976 and uses that copy, rather than the current dynamic value, when
1977 it's trying to decide whether to truncate output. Thus e.g.
1978 (let ((*print-lines* 50))
1979 (pprint-logical-block (stream nil)
1981 (let ((*print-lines* 8))
1982 (print (aref possiblybigthings i) stream)))))
1983 should now truncate the logical block only at 50 lines, instead of
1984 often truncating it at 8 lines, as it did before.
1985 * The doc/cmucl/ directory, containing old CMU CL documentation
1986 from the time of the fork, is no longer part of the base system.
1987 SourceForge has shut down its anonymous FTP service, and with it
1988 my original plan for distributing the old CMU CL documentation
1989 there. For now, if you need these files you can download an old
1990 SBCL source release and extract them from it.
1991 * The fasl file version number changed again, for dozens of reasons,
1992 some of which are apparent above.
1994 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
1995 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
1996 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
1997 patch, so that DISASSEMBLE output is much nicer.
1998 * The code in the SB-PROFILE package now seems reasonably stable.
1999 I still haven't decided what the final interface should look like
2000 (I'd like PROFILE to interact cleanly with TRACE, since both
2001 facilities use function encapsulation) but if you have a need
2002 for profiling now, you can probably use it successfully with
2003 the current CMU-CL-style interface.
2004 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2005 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2006 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2007 link now returns the dangling link itself, and for similar
2008 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2009 link itself. (In these cases the old code signalled an error and
2010 looped endlessly, respectively.) Thus, DIRECTORY now works even
2011 in the presence of dangling and cyclic symbolic links.
2012 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2013 is now a supported extension again, since the consensus on
2014 sbcl-devel was that it can be useful for ordinary development
2015 work, not just for debugging SBCL itself.
2016 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2017 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2018 that currently-defined functions might be redefined later with
2019 different return types.
2020 * Hash tables can be printed readably, as inspired by CMU CL code
2021 of Eric Marsden and SBCL code of Martin Atzmueller.
2022 * better error handling in CLOS method combination, thanks to
2023 Martin Atzmueller porting Pierre Mai's CMU CL patches
2024 * more overflow fixes for >16Mbyte I/O buffers
2025 * A bug in READ has been fixed, so that now a single Ctrl-D
2026 character suffices to cause end-of-file on character streams.
2027 In particular, now you only need one Ctrl-D at the command
2028 line (not two) to exit SBCL.
2029 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2031 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2032 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2033 does the right thing.
2034 * The implementation of some type tests, especially for CONDITION
2035 types, is now tidier and maybe faster, due to CMU CL code
2036 originally by Douglas Crosher, ported by Martin Atzmueller.
2037 * Some math functions have been fixed, and there are new
2038 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2039 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2040 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2041 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2042 likely to be built into sbcl-0.7.0.)
2043 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2044 CL, ported to SBCL by Martin Atzmueller)
2045 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2046 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2047 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2048 * There's a new slam.sh hack to shorten the edit/compile/debug
2049 cycle for low-level changes to SBCL itself, and a new
2050 :SB-AFTER-XC-CORE target feature to control the generation of
2051 the after-xc.core file needed by slam.sh.
2052 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2053 COMPILE-FILE is no longer supported, so that now every function
2054 gets an entry point, so that block compilation looks a little
2055 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2056 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2057 returns the number of bytes consed since the system started,
2058 rather than the number consed since the first time the function
2059 was called. (The new definition parallels ANSI functions like
2060 CL:GET-INTERNAL-RUN-TIME.)
2061 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2062 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2063 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2064 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2065 * Fasl file version numbers are now independent of the target CPU,
2066 since historically most system changes which required version
2067 number changes have affected all CPUs equally. Similarly,
2068 the byte fasl file version is now equal to the ordinary
2071 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2072 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2073 is no longer recognized. I apologize for this, because it was
2074 listed in SB-EXT as a supported extension, but I found that
2075 its existing behavior was poorly specified, as well as incorrectly
2076 specified, and it looked like too much of a mess to straighten it
2077 out. I have enough on my hands trying to get ANSI stuff to work..
2078 * many patches ported from CMU CL by Martin Atzmueller, with
2079 half a dozen bug fixes in pretty-printing and the debugger, and
2080 half a dozen others elsewhere
2081 * fixed bug 13: Floating point infinities are now supported again.
2082 They might still be a little bit flaky, but thanks to bug reports
2083 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2084 as flaky as they were.
2085 * The --noprogrammer command line option is now supported. (Its
2086 behavior is slightly different in detail from what the old man
2087 page claimed it would do, but it's still appropriate under the
2088 same circumstances that the man page talks about.)
2089 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2090 are now supported, and enabled by default. Thus, the compiler can
2091 handle many floating point and complex operations much less
2092 inefficiently. (Thus e.g. you can implement a complex FFT
2094 * The compiler now detects type mismatches between DECLAIM FTYPE
2095 and DEFUN better, and implements CHECK-TYPE more correctly, and
2096 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2097 thanks to patches from Martin Atzmueller.
2098 * various fixes to make the cross-compiler more portable to
2099 ANSI-conforming-but-different cross-compilation hosts (notably
2100 Lispworks for Windows, following bug reports from Arthur Lemmens)
2101 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2102 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2103 fixed thanks to Pierre Mai's CMU CL patches.
2104 * fixes to keep the system from overflowing internal counters when
2105 it tries to use i/o buffers larger than 16M bytes
2106 * fixed bug 45a: Various internal functions required to support
2107 complex special functions have been merged from CMU CL sources.
2108 (When I was first setting up SBCL, I misunderstood a compile-time
2109 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2110 * improved support for type intersection and union, fixing bug 12
2111 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2112 more obscure bugs as well
2113 * some steps toward byte-compiling non-performance-critical
2114 parts of the system, courtesy of patches from Martin Atzmueller
2115 * Christophe Rhodes has made some debian packages of sbcl at
2116 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2117 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2118 stable, but are nonetheless usable. When he's ready, I'd be happy
2119 to add them to the SourceForge "File Releases" section. (And if
2120 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2121 * new fasl file format version number (because of changes in
2122 internal representation of (OR ..) types to accommodate the new
2123 support for (AND ..) types, among other things)
2125 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2126 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2128 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2130 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2131 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2132 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2133 * DESCRIBE now works on structure objects again.
2134 * Most function call argument type mismatches are now handled as
2135 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2136 know whether the function will be redefined before the call is
2137 executed. (The compiler could flag local calls with full WARNINGs,
2138 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2139 it doesn't keep track of enough information to know whether calls
2140 are local in this sense.)
2141 * Compiler output is now more verbose, with messages truncated
2142 later than before. (There should be some supported way for users
2143 to override the default verbosity, but I haven't decided how to
2144 provide it yet, so this behavior is still controlled by the internal
2145 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2146 src/compiler/ir1util.lisp.)
2147 * Fasl file format version numbers have increased again, because
2148 support for the Gray streams extension changes the layout of the
2149 system's STREAM objects.
2150 * The Gray subclassable streams extension now works, thanks to a
2151 patch from Martin Atzmueller.
2152 * The full LOAD-FOREIGN extension (not just the primitive
2153 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2154 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2155 but like most other programs, it defaults to copying the Unix
2156 environment from the original process instead of starting the
2157 new process in an empty environment.
2158 * Extensions which manipulate the Unix environment now support
2159 an :ENVIRONMENT keyword option which doesn't smash case or
2160 do other bad things. The CMU-CL-style :ENV option is retained
2161 for porting convenience.
2162 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2163 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2165 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2167 * A patch from Martin Atzmueller seems to have solved the SIGINT
2168 problem, and as far as we know, signal-handling now works cleanly.
2169 (If you find any new bugs, please report them!)
2170 * The system no longer defaults Lisp source file names to types
2171 ".l", ".cl", or ".lsp", but only to ".lisp".
2172 * The compiler no longer uses special default file extensions for
2173 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2174 seems to expect a single default extension for all compiled code,
2175 and there's no compelling reason to try to stretch the standard
2176 to allow two different extensions.) Instead, byte-compiled files
2177 default to the same extension as native-compiled files.
2178 * Fasl file format version numbers have increased again, because
2179 a rearrangement of internal implementation packages made some
2180 dumped symbols in old fasl files unreadable in new cores.
2181 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2182 many fewer weird special cases.
2183 * Bug #17 (differing COMPILE-FILE behavior between logical and
2184 physical pathnames) has been fixed, and some related misbehavior too,
2185 thanks to a patch from Martin Atzmueller.
2186 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2187 by Tim Moore, ported to SBCL by Martin Atzmueller.
2188 * Martin Atzmueller fixed several filesystem-related problems,
2189 including bug #36, in part by porting CMU CL patches, which were
2190 written in part by Paul Werkowski.
2191 * More compiler warnings in src/runtime/ are gone, thanks to
2192 more patches from Martin Atzmueller.
2193 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2196 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2198 * DESCRIBE now works on CONDITION objects.
2199 * The debugger now handles errors which arise when trying to print
2200 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2202 * The build system now uses an additional file, customize-target-features.lisp,
2203 to allow local modifications to the target *FEATURES* list. (The point of
2204 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2205 debugging features enabled, without having to worry about propagating it
2206 into everyone's system when I do a "cvs update".) When no
2207 customize-target-features.lisp file exists, the target *FEATURES* list
2208 should be constructed the same way as before.
2209 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2210 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2211 warn about behavior which is undefined under the ANSI spec. Note: This
2212 is specified by ANSI, but it's not very popular with programmers.
2213 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2214 macro in the SBCL sources for an example of a workaround which you
2215 might use to make portable ANSI-standard code which does what you want.
2216 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2217 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2218 when it's used as a non-toplevel form. (This is required in order
2219 to implement the DEFCONSTANT-EQX macro.)
2220 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2221 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2222 funny things, due to bugs in the implementation of EVAL-WHEN
2223 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2224 non-toplevel DEFCONSTANTs are uncommon.)
2225 * The core file version number and fasl file version number have been
2226 incremented, because the old noncompliant DEFCONSTANT behavior involved
2227 calling functions which no longer exist, and because I also took the
2228 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2229 * fixed bug 1 (error handling before read-eval-print loop starts), and
2230 redid debugger restarts and related debugger commands somewhat while
2232 ** The QUIT debugger command is gone, since it did something
2233 rather different than the SB-EXT:QUIT command, and since it never
2234 worked properly outside the main toplevel read/eval/print loop.
2235 Invoking the new TOPLEVEL restart provides the same functionality.
2236 ** The GO debugger command is also gone, since you can just invoke
2237 the CONTINUE restart directly instead.
2238 ** The TOP debugger command is also gone, since it's redundant with the
2239 FRAME 0 command, and since it interfered with abbreviations for the
2241 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2243 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2244 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2245 some porting work by Martin Atzmueller)
2246 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2247 with a boatload of patches which he ported to SBCL. Now that those
2249 ** The system tries to make sure that its low-priority messages
2250 are prefixed by semicolons, to help people who like to use
2251 syntax highlighting in their ILISP buffer. (This patch
2252 was originally due to Raymond Toy.)
2253 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2254 patches originally written by Raymond Toy.
2255 ** The compiler understands coercion between single-value and
2256 multiple-VALUES type expressions better, getting rid of some very
2257 weird behavior, thanks to patches originally by Robert MacLachlan
2258 and Douglas Crosher.
2259 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2260 lambda lists, thanks to a patch originally by Pierre Mai.
2261 ** The system no longer bogusly warns about "abbreviated type
2263 ** The compiler gets less confused by inlining and RETURN-FROM,
2264 thanks to some patches originally by Tim Moore.
2265 ** The system no longer hangs when dumping circular lists to fasl
2266 files, thanks to a patch originally from Douglas Crosher.
2267 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2268 undefined function error.
2269 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2270 in structure slot initforms) for now, documented workaround instead:-|
2271 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2272 * fixed bug 5: added stubs for various Gray stream functions called
2273 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2274 installed, at least appropriate type errors are generated
2275 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2276 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2277 consistently in DEFMETHOD forms.
2278 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2279 it doesn't seem to affect SBCL after all
2280 * The C runtime system now builds with better optimization and many
2281 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2283 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2285 * The system is now under CVS at SourceForge (instead of the
2286 CVS repository on my home machine).
2287 * The new signal handling code has been tweaked to treat register
2288 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2289 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2290 downstream, e.g. in debug-int.lisp, has implicit dependencies
2291 on the unsignedness of integer representation of machine words,
2292 and that caused the system to bomb out with infinite regress
2293 when trying to recover from type errors involving signed values,
2294 e.g. (BUTLAST '(1 2 3) -1).)
2295 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2296 (This was one of the bugs Peter Van Eynde reported back in July.)
2297 * The system now uses code inspired by Colin Walters' O(N)
2298 implementation of MAP (from the cmucl-imp@cons.org mailing
2299 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2300 inline the MAP operation, and there is more than one
2301 sequence argument to the MAP call (so that it can't just
2302 do ETYPECASE once and for all based on the type of the
2303 single sequence argument). (The old non-inline implementation
2304 of the general M-argument sequence-of-length-N case required
2305 O(M*N*N) time when any of the sequence arguments were LISTs.)
2306 * The QUIT :UNIX-CODE keyword argument has been renamed to
2307 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2308 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2310 * Raymond Wiker's patches to port dynamic loading from Linux to
2311 FreeBSD have been added.
2312 * The BUGS file is now more nearly up to date, thanks in large part
2313 to Martin Atzmueller's review of it.
2314 * The debugger now flushes standard output streams before it begins
2315 its output ("debugger invoked" and so forth).
2316 * The core version number and fasl file version number have both
2317 been incremented, because of incompatible changes in the layout
2319 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2320 used to not be called for a saved Lisp image.)
2321 * Martin Atzmueller's version of a patch to fix a compiler crash,
2322 as posted on sbcl-devel 13 September 2000, has been installed.
2323 * Instead of installing Martin Atzmueller's patch for the
2324 compiler transform for SUBSEQ, I deleted the compiler transform,
2325 and transforms for some similar consing operations.
2326 * A bug in signal handling which kept TRACE from working on OpenBSD
2328 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2329 away by constant folding
2330 * The system now defines its address space constants in one place
2331 (in the Lisp sources), and propagates them automatically elsewhere
2332 (through GENESIS and the sbcl.h file). Therefore, patching the
2333 address map is less unnecessarily tedious and error-prone. The
2334 Lisp names of address space constants have also been systematized.
2335 * CVS tags like dollar-Header-dollar have been removed from
2336 the sources, because they have never saved me trouble and
2337 they've been source of trouble working with patches and other
2338 diff-related operations.
2339 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2340 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2342 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2344 * The system has been ported to OpenBSD.
2345 * The system now compiles with a simple "sh make.sh" on the systems
2346 that it's supported on. I.e., now you no longer need to tweak
2347 text in the target-features.lisp-expr and symlinks in src/runtime/
2348 by hand, the make.sh takes care of it for you.
2349 * The system is no longer so grossly inefficient when compiling code
2350 involving vectors implemented as general (not simple) vectors (VECTOR T),
2351 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2352 which dares to use the various sequence functions on non-simple
2353 vectors, takes less of a performance hit.
2354 * There is now a primitive type predicate VECTOR-T-P
2355 to test for the (VECTOR T) type, so that e.g.
2356 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2357 can now be compiled with some semblance of efficiency. (The old code
2358 turned the type declaration into a full call to %TYPEP at runtime!)
2359 * AREF on (VECTOR T) is still not fast, since it's still compiled
2360 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2361 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2362 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2363 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2364 without making full calls to SUBTYPEP at runtime.
2365 (Some analogous efficiency issues for non-simple vectors specialized to
2366 element types other than T, or for non-simple multidimensional arrays,
2367 have not been addressed. They could almost certainly be handled the
2368 same way if anyone is motivated to do so.)
2369 * The changes in array handling break binary compatibility, so
2370 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2371 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2372 instead of (VALUES T T).
2373 * By following the instructions that Dan Barlow posted to sbcl-devel
2374 on 2 July 2000, I was able to enable primitive dynamic object
2375 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2376 functionality is not implemented (since it calls ld to resolve
2377 library references automatically, requiring RUN-PROGRAM for its
2378 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2379 try to resolve library references) is now supported.
2380 * The system now flushes the standard output streams when it terminates,
2381 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2382 them at several other probably-convenient times, e.g. in each pass of
2383 the toplevel read-eval-print loop, and after evaluating a form given
2384 as an "--eval" command-line option. (These changes were motivated by a
2385 discussion of stream flushing issues on cmucl-imp in August 2000.)
2386 * The source transform for TYPEP of array types no longer assumes
2387 that an array whose element type is a not-yet-defined type
2388 is implemented as an array of T, but instead punts, so that the
2389 type will be interpreted at runtime.
2390 * There is now some support for cross-compiling in make.sh: each of
2391 the phases of make.sh has its own script. (This should be transparent
2392 to people doing ordinary, non-cross-compile builds.)
2393 * Since my laptop doesn't have hundreds of megabytes of memory like
2394 my desktop machine, I became more motivated to do some items on
2395 my to-do list in order to reduce the size of the system a little:
2396 ** Arrange for various needed-only-at-cold-init things to be
2397 uninterned after cold init. To support this, those things have
2398 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2399 symbols with such names are now uninterned after cold init).
2400 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2401 fasl files for cold load.
2402 ** Remove the old compiler structure pooling code (which used to
2403 be conditional on the target feature :SB-ALLOC) completely.
2404 ** Redo the representation of some data in cold init to be more compact.
2405 (I also looked into supporting byte compiled code at bootstrap time,
2406 which would probably reduce the size of the system a lot, but that
2407 looked too complicated, so I punted for now.)
2408 * The maximum signal nesting depth in the src/runtime/ support code has
2409 been reduced from 4096 to 256. (I don't know any reason for the very
2410 large old value. If the new smaller value turns out to break something,
2411 I'll probably just bump it back up.)
2412 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2414 * Many, many bugs reported by Peter Van Eynde have been added to
2415 the BUGS list; some have even been fixed.
2416 * While enabling dynamic object file loading, I tried to make the
2417 code easier to understand, renaming various functions and variables
2418 with less ambiguous names, and changing some function calling
2419 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2420 * While trying to figure out how to do the OpenBSD port, I tried to
2421 clean up some of the code in src/runtime/. In particular, I dropped
2422 support for non-POSIX signal handling, added various comments,
2423 tweaked the code to reduce the number of compilation warnings, and
2424 renamed some files to increase consistency.
2425 * To support the new automatic configuration functionality in make.sh,
2426 the source file target-features.lisp-expr has been replaced with the
2427 source file base-target-features.lisp-expr and the machine-generated
2428 file local-target-features.lisp-expr.
2429 * fixed a stupid quoting error in make.sh so that using CMU CL
2430 "lisp -batch" as cross-compilation host works again
2432 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2434 * DESCRIBE no longer tries to call itself recursively to describe
2435 bound/fbound values, so that it no longer fails on symbols which are
2436 bound to themselves (like keywords, T, and NIL).
2437 * DESCRIBE now works on generic functions.
2438 * The printer now prints less-screwed-up representations of closures
2439 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2440 * A private symbol is used instead of the :EMPTY keyword previously
2441 used to mark empty slots in hash tables. Thus
2442 (DEFVAR *HT* (MAKE-HASH-TABLE))
2443 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2444 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2445 now does what ANSI says that it should. (You can still get
2446 similar noncompliant behavior if bang on the hash table
2447 implementation with all the symbols you get back from
2448 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2449 This breaks binary compatibility, since tests for equality to
2450 :EMPTY are wired into things like the macroexpansion of
2451 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2453 * There's now a minimal placeholder implementation for CL:STEP,
2454 as required by ANSI.
2455 * An obscure bug in the interaction of the normal compiler, the byte
2456 compiler, inlining, and structure predicates has been patched
2457 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2458 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2460 * Missing ordinary arguments in a macro call are now detected even
2461 when the macro lambda list contains &KEY or &REST.
2462 * The debugger no longer complains about encountering the top of the
2463 stack when you type "FRAME 0" to explicitly instruct it to go to
2464 the top of the stack. And it now prints the frame you request even
2465 if it's the current frame (instead of saying "You are here.").
2466 * As specified by ANSI, the system now always prints keywords
2467 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2469 * The default initial SIZE of HASH-TABLEs is now smaller.
2470 * Type information from CLOS class dispatch is now propagated
2471 into DEFMETHOD bodies, so that e.g.
2472 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2474 is now basically equivalent to
2475 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2476 (DECLARE (TYPE SINGLE-FLOAT X))
2478 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2479 operation, without having to do run-time type dispatch.
2480 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2481 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2482 * Since I don't seem to be making big file reorganizations very often
2483 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2484 is overflowing my ability to conveniently back them up), I've finally
2485 checked the system into CVS. (The CVS repository is on my home system,
2486 not at SourceForge -- putting it on SourceForge might come later.)
2487 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2488 high-level GC-NOTIFY-FOO functions send their output. (There's
2489 still very little control of where low-level verbose GC functions
2490 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2491 less than it used to -- the GC-NOTIFY-FOO functions are now under
2492 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2493 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2494 in only one place in the source code, and propagates it automatically
2495 everywhere that it's needed. Thus e.g. when I bump the version from
2496 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2497 * The C source files now include boilerplate legalese and documentation
2498 at the head of each file (just as the Lisp source files already did).
2499 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2500 to his page will be replaced with a link to his new CLiki service.
2502 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2504 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2505 * The build process now looks for GNU make under the default name "gmake",
2506 instead of "make" as it used to. If GNU make is not available as "gmake"
2507 on your system, you can change this default behavior by setting the
2508 GNUMAKE environment variable.
2509 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2510 can build without error under CMU CL.
2512 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2514 * There is now a partial SBCL user manual (with some new text and some
2515 text cribbed from the CMU CL manual).
2516 * The beginnings of a profiler have been added (starting with the
2517 CMU CL profiler and simplifying and cleaning up). Eventually the
2518 main interface should be through the TRACE macro, but for now,
2519 it's still accessed through vaguely CMU-CL-style functions and macros
2520 exported from the package SB-PROFILE.
2521 * Some problems left over from porting CMU CL to the new
2522 cross-compilation bootstrap process have been cleaned up:
2523 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2524 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2525 part when getting rid of the compiler *BACKEND* stuff.)
2526 ** The value of *NULL-TYPE* was screwed up, because it was
2527 being initialized before the type system knew the final
2528 definition of the 'NULL type. This screwed up several key
2529 optimizations in the compiler, causing inefficiency in all sorts
2530 of places. (I found it because I wanted to understand why
2531 GET-INTERNAL-RUN-TIME was consing.)
2532 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2533 PROCLAIM FTYPE information. Unfortunately this broke binary
2534 compatibility again, since now the forms output by DEFGENERIC
2535 to refer to functions which didn't exist in 0.6.3.
2536 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2537 can use the new (as of 0.6.3) transform for SOME into MAP into
2539 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2540 values to (INTEGER 0 1000000), so that the time code will no longer
2541 occasionally get blown up by Linux returning 1000000 microseconds
2542 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2543 its output conform to the ANSI spec. (Alas, this makes its output
2544 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2545 * A full call to MAP NIL with a single sequence argument no longer conses.
2546 * fixes to problems pointed out by Martin Atzmueller:
2547 * The manual page no longer talks about multiprocessing as though
2548 it were currently supported.
2549 * The ILISP support patches have been removed from the distribution,
2550 because as of version 5.10.1, ILISP now supports SBCL without us
2551 having to maintain patches.
2552 * added a modified version of Raymond Toy's recent CMU CL patch for
2553 EQUALP comparison of HASH-TABLE
2555 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2557 * The system still can't cross-compile itself with
2558 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2559 entails), but at least it can compile more of itself that way
2560 than it used to be able to, and various buglets which were uncovered
2561 by trying to cross-compile itself that way have now been fixed.
2562 * This release breaks binary compatibility again. This time
2563 at least I've incremented the FASL file format version to 2, so that the
2564 problem can be detected reliably instead of just causing weird errors.
2565 * various new style warnings:
2566 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2567 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2568 ** using the lexical binding of a variable named in the *FOO* style
2569 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2570 as specified by ANSI.
2571 * *RANDOM-STATE* is no longer automatically initialized from
2572 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2573 default behavior of the system is to repeat its behavior every time
2574 it's run. If you'd like to change this behavior, you can always
2575 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2576 old convention there was no comparably easy way to get the system to
2577 repeat its behavior every time it was run.
2578 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2579 FTYPE declarations has been removed, in favor of their ANSI
2580 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2581 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2582 the types of their sequence arguments can be determined at compile time.
2583 This is done through a new open code expansion for MAP which eliminates
2584 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2585 argument types can be determined at compile time.
2586 * The optimizer now transforms COERCE into an identity operation when it
2587 can prove that the coerced object is already of the correct type. (This
2588 can be a win for machine generated code, including the output of other
2589 optimization transforms, such as the MAP transform above.)
2590 * Credit information has been moved from source file headers into CREDITS.
2591 * Source file headers have been made more standard.
2592 * The CASE macro now compiles without complaining even when it has
2595 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2597 * (Note that the way that the PCL macroexpansions were rewritten
2598 to accommodate the change in DEFGENERIC below breaks binary
2599 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2600 not run under sbcl-0.6.2. Once we get out of alpha releases,
2601 i.e. hit release 1.0.0, we'll probably try to maintain binary
2602 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2603 and sbcl-1.4.4. Until then, however, it might be fairly common
2604 for maintenance releases to break binary compatibility.)
2605 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2607 * The reporting of unhandled signals has been changed to print some
2608 explanatory text as well as the report form. (Previously only
2609 the report form was printed.)
2610 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2611 it defines, so that the compiler no longer issues undefined function
2612 warnings for compiled-but-not-yet-loaded generic functions.
2613 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2614 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2615 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2616 section of the ANSI spec are supported.
2617 * The "" nickname for the "KEYWORD" package has been removed.
2618 The reader still handles symbol tokens which begin with a package marker
2619 as keywords, but it doesn't expose its mechanism for doing so in the
2620 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2621 * The system now issues STYLE-WARNINGs for contradictory TYPE
2622 proclamations. (Warnings for contradictory FTYPE proclamations would
2623 be nice too, but those can't be done usefully unless the type system
2624 is made smarter about FUNCTION types.)
2625 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2626 systematized, so that "*target-*.lisp is supposed to exist only on the
2627 target and imply that there's a related file which exists on the
2628 host, and *host-*.lisp is supposed to exist only on the host and imply
2629 that there's a related file which exists on the target. This involves a
2630 lot of renaming. Hopefully the acute confusion caused by the renaming
2631 will be justified by the reduction in chronic confusion..
2632 ** runtime-type.lisp -> early-target-type.lisp
2633 ** target-type.lisp -> late-target-type.lisp
2634 ** early-host-format.lisp -> early-format.lisp
2635 ** late-host-format.lisp -> late-format.lisp
2636 ** host-error.lisp -> misc-error.lisp
2637 ** early-error.lisp -> early-target-error.lisp
2638 ** late-error.lisp -> late-target-error.lisp
2639 ** host-defboot.lisp -> early-defboot.lisp
2640 ** code/misc.lisp -> code/target-misc.lisp
2641 ** code/host-misc.lisp -> code/misc.lisp
2642 ** code/numbers.lisp -> code/target-numbers.lisp
2643 ** code/early-numbers.lisp -> numbers.lisp
2644 ** early-host-type.lisp -> early-type.lisp
2645 ** late-host-type.lisp -> late-type.lisp
2646 ** host-typep.lisp -> typep.lisp
2647 ** load.lisp -> target-load.lisp
2648 ** host-load.lisp -> load.lisp
2649 ** host-disassem.lisp -> disassem.lisp
2650 ** host-insts.lisp -> insts.lisp
2651 ** byte-comp.lisp -> target-byte-comp.lisp
2652 ** host-byte-comp.lisp -> byte-comp.lisp
2653 ** host-signal.lisp -> signal.lisp
2654 ** host-defstruct.lisp -> defstruct.lisp
2655 ** late-target-type.lisp -> deftypes-for-target.lisp
2656 Furthermore, several other previously target-only files foo.lisp (e.g.
2657 hash-table.lisp and random.lisp) have been split into a target-and-host
2658 foo.lisp file and a target-only target-foo.lisp file, with their key type
2659 definitions in the target-and-host part, so that the cross-compiler will
2660 know more about target types.
2661 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2662 gone away. In their place are various *BACKEND-FOO* variables
2663 corresponding to the slots of the old structure.
2664 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2665 into the target SBCL has been fixed.
2666 * The chill.lisp system for loading cold code into a running SBCL
2668 * Support for the CMU CL "scavenger hook" extension has been removed.
2669 (It was undocumented and unused in the CMU CL sources that SBCL was
2670 derived from, and stale in sbcl-0.6.1.)
2671 * Various errors in the cross-compiler type system were detected
2672 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2673 (enabling various consistency checks). Many of them were fixed,
2674 but some hard problems remain, so the compiler is back to
2675 running without *TYPE-SYSTEM-INITIALIZED* for now.
2676 * As part of the cross-compiler type system cleanup, I implemented
2677 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2678 * I have started adding UNCROSS calls throughout the type system
2679 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2680 on cross-compiler input files will be able to go away, and various
2682 * CONSTANTP now returns true for quoted forms (as explicitly required
2685 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2687 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2688 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2689 (MAKE-LIST -1). In the longer term, it ought to become true
2690 that declarations are assertions even at SAFETY 1. For now, it's not
2691 quite true even at SAFETY 3, but it's at least more nearly true..
2692 (Note that this change seems to increases the size of the system by
2693 O(5%) and to decrease the speed of the compiler by 20% or more.)
2694 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2695 for the problem of printing dozens of lines of distracting information
2696 about low-level system machinery as part of the top stack frame
2697 on entry to the debugger when an undefined function was called.
2698 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2699 is not reset to COMMON-LISP-USER.
2700 * Compilation of stuff related to dyncount.lisp has been made conditional
2701 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2702 smaller. The various dyncount-related symbols have been moved into
2703 a new "SB-DYNCOUNT" package.
2704 * tty-inspect.lisp has been renamed to inspect.lisp.
2705 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2706 feature has gone away. (When we eventually port to other flavors of
2707 libc and/or Unix, we'll try to make the differences between flavors
2708 invisible at the user level.)
2709 * Various other *FEATURES* tags, and/or their associated conditionals,
2710 have been removed if obsolescent, or given better documentation, or
2711 sometimes given more-mnemonic names.
2713 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2715 * tidied up "make.sh" script
2716 * tidied up system directory structure
2717 * better "clean.sh" behavior
2718 * added doc/FOR-CMUCL-DEVELOPERS
2719 * many many small tweaks to output format, e.g. removing possibly-confusing
2720 trailing #\. character in DESCRIBE-INSTANCE
2721 * (EQUALP #\A 'A) no longer signals an error.
2722 * new hashing code, including EQUALP hashing
2723 * tidied up Lisp initialization and toplevel
2724 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2725 * command line argument processing
2726 * added POSIX-GETENV function to deal with Unix-ish environment variables
2727 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2728 terminating SBCL on EOF
2729 * non-verbose GC by default
2730 * There is no more "sbcl" shell script; the sbcl file is now the C
2731 runtime executable (just like CMU CL).
2732 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2734 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2735 symbol and package information as Lisp native symbol and package objects
2736 instead of strings naming symbols and strings naming packages. This way,
2737 whenever packages are renamed (as in warm init), debug information is
2738 transformed along with everything else.
2739 * tweaked the optimization policy declarations which control the building
2740 of SBCL itself. Now, among other things, the system no longer saves
2741 source location debugging information. (This helps two problems at once
2742 by reducing SBCL size and by keeping SBCL from trying to look for its
2743 sources -- which may not exist -- when reporting errors.)
2744 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2745 debugging and testing purposes
2746 * cleaned up printing, making the printer call PRINT-OBJECT for
2747 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2748 methods, giving nearly-ANSI behavior
2749 * converted almost all special variables to use *FOO* naming convention
2750 * deleted PARSE-TIME functionality, since it can be done portably
2751 * moved some files out of cold init into warm init
2752 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2754 * regularized formatting of source files
2755 * added an install.sh script
2756 * fixed ridiculous memory usage of cross-compiler by making
2757 compiler/alloc.lisp not try to do pooling unless it can hook
2758 itself into the GC of the cross-compilation host. Now the system
2759 builds nicely on my old laptop.
2760 * added :SB-ALLOC in target-features.lisp-expr
2761 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2762 was not implemented)
2763 * re-did condition handling and note reporting in the compiler. Notes
2764 are no longer handled by signalling conditions. Style warnings
2765 and warnings are handled more correctly and reported in such a way
2766 that it's easy to find one or the other in your output (so that you
2767 can e.g. figure out which of many problems caused COMPILE-FILE to
2769 * changed the severity of several compiler warnings from full WARNING
2770 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2771 compiler note reporting so that it doesn't use the condition system
2772 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2773 COMPILE-FILE command)
2774 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2775 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2776 no longer supported, since their implementation was deeply intertwingled
2777 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2778 * removed bogus "support" for compiler macros named (SETF FOO), and
2779 removed the compiler macro for SETF INFO (but only after making a fool
2780 of myself on the cmucl-imp mailing list by posting a bogus patch for
2781 DEFINE-COMPILER-MACRO..)
2782 * Compiled files containing forms which have side effects on the Lisp
2783 reader (such as DEFPACKAGE forms) are now handled more correctly.
2784 (Compiler queuing of top level lambdas has been suppressed by setting
2785 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2786 * deleted various currently-unused source files, e.g. gengc.lisp. They
2787 may be added back at some point e.g. when porting to other architectures,
2788 but until they are it's distracting to distribute them and to try to
2790 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2791 there were so many of them they're just distractions, and UNCROSS is
2792 known to be able to handle the current sources
2793 * moved PROFILE functionality into TRACE, so that it will be clear
2794 how the wrapping and unwrapping of functions when you profile them
2795 interacts with the wrapping and unwrapping of functions when you
2796 trace them. (Actually, the functionality isn't there yet, but at least
2797 the interface specification is there. Hopefully, the functionality will
2798 arrive with some future maintenance release.)
2799 * removed host-oops.lisp
2800 * changed signature of QUIT function to allow UNIX-CODE argument
2801 * fixed READ-SEQUENCE bug
2802 * tweaked verbose GC output so that it looks more like the progress
2803 output that ANSI specifies for functions like LOAD
2804 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2805 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob