1 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
2 * new feature: reloading changed shared object files with
3 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
4 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
5 supported. (thanks to Dan Debertin)
6 * fixed bug #331: structure-class instances corresponding to
7 DEFSTRUCT forms are now created eagerly.
8 * fixed bug #345: backtraces from calls to undefined functions work
9 on x86 as well. Related bug #61 is now also partially fixed on x86
10 (backtraces from throws to unknown catch tags.)
11 * bug fix: lambda-list parsing is now stricter vrt. order and number
12 of lambda-list keywords.
13 * bug fix: as specified by AMOP, an error is signalled if a
14 class-option appears multiple times in a DEFCLASS form. (reported
16 * bug fix: RANDOM can be compiled when the compiler derives the type
17 of its numeric argument as a disjoint set of small integers.
18 (reported by Paul Dietz)
19 * fixed some bugs revealed by Paul Dietz' test suite:
20 ** INCF, DECF and REMF evaluate their place form as specified in
22 ** FORMATTER expands ~{ ~} iteration directives with V or #
24 ** FORMATTER deals with the ~@[ ~] conditional directive where the
25 consequent uses no arguments correctly.
26 ** the system has a partial understanding of the (COMPLEX RATIO)
28 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
31 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
32 * new feature: a build-time option (controlled by the :SB-UNICODE
33 keyword feature, enabled by default) for building the system with
34 support for the entire 21-bit character space defined by the
36 * new feature: the system now has rudimentary external-format
37 support; the primary user-visible change at this time is that
38 characters with the high bit set (such as lower-case-e-acute) will
39 print correctly to a terminal in a UTF-8 environment.
40 * minor incompatible change: BASE-CHAR no longer names a class;
41 however, CHARACTER continues to do so, as required by ANSI.
42 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
43 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
44 has been moved to the SB-EXT package (temporarily re-exported from
46 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
47 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
49 * fixed bug #351: better error-handlind and reporting for malformed
51 * fixed bug #350: bignum-printing is now more memory-efficient,
52 allowing printing of very large bignums, eg. (expt 2 10000000).
53 (reported by Bruno Haible)
54 * fixed bug #302: better primitive-type selection for intersection
56 * fixed bug #308: non-graphic characters now all have names, as
57 required. (reported by Bruno Haible)
58 * bug fix: redefining a class with different superclasses now correctly
59 removes it from the direct-subclasses of its previous superclasses.
60 (reported by David Morse)
61 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
62 new value now works. (reported by Bruno Haible)
63 * bug fix: correct canonicalization of multiple non-standard slot
64 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
65 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
66 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
67 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
68 now exists, an signals an error.
69 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
70 during macroexpansion for non-iteration variables as well. (reported
71 by Bruno Haible for CMUCL)
72 * bug fix: Cyclic structures and unprintable objects in compiler
73 messages no longer cause errors. (reported by Bruno Haible)
74 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
75 and READ-FROM-STRING all now return a primary value of NIL if
76 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
77 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
78 (reported by Bruno Haible for CMUCL)
79 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
80 do not designate a condition. (reported by Bruno Haible for
82 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
83 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
84 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
85 permitting resolution in favour of any of the conflicting symbols.
86 (reported by Bruno Haible for CMUCL)
87 * bug fix: EQUAL compiler optimizations is less aggressive on
88 strings which can potentially compare true despite having distinct
89 specialized array element types.
90 * bug fix: unit enumerations can be defined without dividing by
91 zero. (thanks to Vincent Arkesteijn)
92 * FORMAT compile-time argument count checking has been enhanced.
93 (report from Bruno Haible for CMUCL)
94 * a partial workaround for the bug 262: the compiler does not try to
95 inline-expand a local function doing RETURN-FROM from a deleted
96 BLOCK. (thanks to Peter Denno for the bug report and to David
97 Wragg for the simple test case)
98 * fixed some bugs revealed by Paul Dietz' test suite:
99 ** RENAME-PACKAGE allows all package designators as new package
101 ** constraint propagation and lambda variable substitution are
102 more cautious in dealing with partially deleted code.
103 ** compiler sometimes lost reoptimization passes.
104 ** CERROR, given a condition as condition designator, passes its
105 remaining arguments to the continue format control without
107 ** Case-altering FORMAT directives work correctly on non-ASCII
109 ** The REAL type specifier handles bounds outside the floating
110 point ranges without signalling FLOATING-POINT-OVERFLOW.
111 ** Functions with IR1-transformations can create intercomponent
112 references to global functions.
113 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
115 ** FORMAT ~R treats a nil value for its first parameter correctly.
117 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
118 * enhancement: saving cores with foreign code loaded is now
119 supported on x86/NetBSD and sparc/Linux in addition to the previously
121 * bug fix: on some platforms repeated installations caused multiple
122 copies of HTML documentation to be installed -- should not happen
123 any more. (reported by Stefan Scholl)
124 * bug fix: parsing self-recursive alien record types multiple times
125 no longer causes infinite recursion. (reported by Thomas F. Burdick,
126 original patch by Helmut Eller for CMUCL)
127 * bug fix: stack-exhaustion detection works now on NetBSD as well.
128 (thanks to Richard Kreuter)
129 * bug fix: defining classes whose accessors are methods on existing
130 generic functions in other (locked) packages no longer signals
131 bogus package lock violations. (reported by François-René Rideau)
132 * bug fix: special variables as DEFMETHOD parameters no longer have
133 associated bogus type declarations. (reported by David Wragg and
135 * bug fix: read-write consistency on streams of element-type
136 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
137 * bug fix: redefiniton of the only method of a generic function with
138 no DEFGENERIC no longer emits a full WARNING. In addition,
139 redefinition of generic functions with no DEFGENERIC to an
140 incompatible lambda list now signals an error. (thanks to Zach
142 * bug fix: DEFGENERIC now works even when there's a function of the
143 same name in an enclosing lexical environment. (thanks to Zach
145 * fixed compiler failure, caused by instrumenting code during
146 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
147 * optimization: added loop analysis and improved register allocation
148 * fixed some bugs revealed by Paul Dietz' test suite:
149 ** POSITION on displaced vectors with non-zero displacement
150 returns the right answer.
151 ** (SIMPLE-STRING) is a valid type specifier for sequence
153 ** *PRINT-LEVEL* handling for slotless structures is pedantically
155 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
156 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
158 ** The justification version of the FORMAT ~< directive treats
159 non-zero minpad parameter correctly.
161 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
162 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
163 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
164 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
165 the supported interface.
166 * new feature: Single-stepping of code compiled with DEBUG 2 or
167 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
168 * new feature: saving cores with foreign code loaded is now
169 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
170 Timothy Moore's work for CMUCL)
171 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
172 parameters to * instead of NIL if no initform is supplied.
173 (reported by Johan Bockgaard)
174 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
175 correctly when FUNCALL appears as the car of the form. Note:
176 despite this FUNCALL forms are not currently subject to
177 compiler-macro expansion. (port of Raymond Toy's fix for the
178 same from CMUCL, reported by Johan Bockgaard)
179 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
180 (thanks for Teemu Kalvas)
181 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
182 case instead of terminating the iteration (thanks for Julian
183 Squires, Sean Champ and Raymond Toy)
184 * bug fix: incorrect expansion of defgeneric that caused a style
185 warning. (thanks for Zach Beane)
186 * bug fix: slot accessor effective method computation works properly
187 for classes with multiple non-standard applicable methods on
188 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
189 * on x86 compiler supports stack allocation of results of LIST and
190 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
191 CMUCL implementation by Gerd Moellmann)
192 * fixed some bugs revealed by Paul Dietz' test suite:
193 ** FORMAT strings with both the ~<~:;~> form of the justification
194 directive and pretty-printing directives cause an error.
196 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
197 * incompatible change: the internal functions
198 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
199 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
200 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
201 instead of the old functions.
202 * new feature: on platforms where "dladdr" is available foreign
203 function names now appear in backtraces. (based on Helmut Eller's
205 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
206 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
208 * documentation: ASDF manual is now distributed with SBCL.
209 * bug fix: SBCL can now load its contributed modules with REQUIRE
210 even if the system-provided entries have been removed from
211 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
213 * bug fix: backtraces involving undefined functions or assembly
214 routines are more informative. (thanks to Brian Downing)
215 * bug fix: mutually referent alien structures now work correctly.
216 (reported by Rick Taube)
217 * bug fix: structures defined by WITH-ALIEN can be referred to
218 within other definitions in the same WITH-ALIEN.
219 * bug fix: division operators (MOD, TRUNCATE and the like) with
220 constant zero divisors and integer dividends no longer generate
222 * bug fix: provide default methods for INPUT-STREAM-P and
223 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
224 * bug fix: improve the detection and resolution of MOP metacycles
225 (where effective method computation depends on the generic function
226 having its effective method computed). (reported by Bruno Haible)
227 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
228 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
229 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
230 * bug fix: pathnames with relative directory components can be
231 represented relative to default pathnames.
232 * optimization: in taking the GCD of bignums, reduce the two bignums
233 to approximately the same size (using Euclid's algorithm) before
234 applying the more sophisticated binary GCD. (thanks to Juho
236 * optimization: COUNT on bitvectors now operates word-at-a-time.
237 * optimization: ASH with a positive, but not necessarily constant,
238 (leftwards) shift, when in a modular context, is compiled to a
240 * fixed some bugs revealed by Paul Dietz' test suite:
241 ** FORMAT variable parameters ("~V<char>") are defaulted properly
242 if the corresponding argument is NIL.
243 ** FORMAT directives accepting a minpad parameter treat negative
245 ** literal commas as character parameters to FORMAT directives are
247 ** literal spaces directly after ~<Newline> directives within a
248 format-logical-block (~:< ~@:>) do not induce :FILL-style
249 conditional newlines.
250 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
251 as specified: it no longer includes conditional newlines).
252 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
254 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
255 :PER-LINE-PREFIX argument does not evaluate to a string.
257 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
258 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
259 the manual for details; for now, package locks can be disabled by
260 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
261 if no major problems are found then it is likely that they will be
262 compiled in unconditionally.
263 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
264 unsupported operators on all platforms. To load a shared library
265 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
266 object file, link it into a shared library outside of SBCL and
267 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
269 * bug workaround: ROOM T and the GC were not working together
270 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
271 reporting facility aren't preserved. That reporting has been
272 disabled, so now until and unless someone figures out how to make it
273 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
274 * minor incompatible change: as threatened around sbcl-0.8.0, the
275 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
276 The symbols are also exported from SB-PCL for backwards
277 compatibility, but more so than before SB-PCL should be treated as
278 an implementation-internal package.
279 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
281 * the SB-SPROF contrib now works on (most) non-x86 architectures.
282 It is known as of this release not to work on the Alpha, however.
283 * fixed bug #167: errors signalled due to illegal syntax in method
284 bodies are now more legible.
285 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
286 designators and can hence be used with TYPEP.
287 * fixed bug #333: CHECK-TYPE now ensures that the type error
288 signalled, if any, has the right object to be accessed by
289 TYPE-ERROR-DATUM. (reported by Tony Martinez)
290 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
291 5.1.2.3 for multiple-value place subforms. (reported by Kalle
293 * fixed bug #334: programmatic addition of slots using specialized
294 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
295 and :ALLOCATION :CLASS slots.
296 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
297 float exponents. (rereported by Peter Seibel)
298 * fixed a bug: #\Space (and other whitespace characters) are no
299 longer considered to be macro characters in standard syntax by
301 * fixed bug: initialization of condition class metaobjects no longer
302 causes an instance of the condition to be created. (reported by
304 * fixed bug: it is now possible to have slots such that
305 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
306 description is neither :INSTANCE nor :CLASS.
307 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
308 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
309 SLOT-VALUE-USING-CLASS), and no longer causes errors with
310 non-standard SLOT-DEFINITION-ALLOCATION values.
311 * fixed bugs: various race conditions handling exiting threads.
312 CL-PPCRE's thread torture test now passes.
313 * fixed arguably-a-bug: GC time proportional to number of threads in
314 system even when most of them are idle
315 * optimization: improved performance of BIT and SBIT on bit-vectors.
316 * .fasl file incompatibility: The fasl file version number has
317 been incremented because of changes associated with package locks.
319 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
320 * minor incompatible change: the system no longer provides
321 optimization hints (conditions which are TYPEP
322 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
323 mode; these hints are still emitted when higher SPEED optimization
325 * new contrib module: a sampling profiler (profiling by statistical
326 sampling, rather than by instrumenting functions) is available as
327 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
328 * the behaviour of the standard function ED is now customizeable by
329 third parties through a hook variable: see ED's documentation
330 string for information on the protocol.
331 * the compiler no longer emits efficiency notes for (FUNCALL X)
332 when the type of X is uncertain under default optimization
334 * fixed bug 276: mutating a binding of a specialized parameter to a
335 method to something that is not TYPEP the specializer is now
337 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
338 exhibit the required behaviour on the x86 platform. (thanks to
339 Peter van Eynde, Eric Marsden and Bruno Haible)
340 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
341 even for difficult arguments. (reported by Peter Graves)
342 * fixed bug 141a: the backquote printer now descends quoted
344 * fixed another bug in backquote printing: no more destructive
345 modification of the form's list structure. (reported by Brian
347 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
348 move between its address being taken and the call to
349 interrupt_thread, fixing a crashing race condition.
350 * the SB-POSIX contrib implementation has been adjusted so that it
351 no longer exhibits ridiculously poor performance when constructing
352 instances corresponding to C structs.
354 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
355 * minor incompatible change: the sb-grovel contrib now treats C
356 structures as alien (in the sense of SB-ALIEN) objects rather than
357 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
358 has implications for memory management of client code
359 (sb-grovel-returned objects must now be manually managed) and for
360 type safety (alien objects now have full types).
361 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
362 used to control emission of compiler diagnostics, rather than the
363 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
364 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
365 quality should be considered deprecated.
366 * install.sh now installs the user manual as well
367 * (not quite a new documentable feature, but worth considering in
368 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
369 beginnings of a semantically meaningful condition hierarchy is
370 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
372 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
373 designator as the defaults argument.
374 * fixed bug: Displaced arrays whose displaced-to array has become
375 too small now cause ARRAY-DIMENSION to signal an error, providing
376 for safer bounds-checking. (reported by Bruno Haible)
377 * fixed bug: DEFCLASS slot definitions with identical :READER and
378 :WRITER names now signal a reasonable error. (reported by Thomas
380 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
382 * fixed bug: Invalid slot specification errors now print correctly.
383 (thanks to Zach Beane)
384 * fixed bug 320: Shared to local slot value transfers in class
385 redefinitions now happen corrently from superclasses as
386 well. (reported by Bruno Haible)
387 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
389 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
390 improper lists correctly. (reported by Bruno Haible)
391 * fixed bug 313: source-transform for <fun-name> was erroneously
392 applied to a call of a value of a variable with name <fun-name>.
393 (reported by Antonio Menezes Leitao)
394 * fixed bug 307: The obsolete instance protocol ensures that
395 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
396 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
397 remove dead unknown-values globs from the middle of the stack.
398 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
399 easier to resume long computations after using *BREAK-ON-SIGNALS*
400 to diagnose and fix failures. (thanks to Nikodemus Siivola)
401 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
402 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
403 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
404 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
405 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
407 * fixed a (fairly theoretical) bug in string printing: if
408 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
409 does not have array-element-type equal to the most general string
411 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
412 function name. (thanks to Nikodemus Siivola)
413 * fixed bug: compile-time format string checker failed on
414 non-closed ~{. (reported by Thomas F Burdick)
415 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
416 don't warn on legal loop code involving more than one aggregate
417 boolean. (thanks to Nikodemus Siivola)
418 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
419 in keyword position to MAKE-PACKAGE was not being reported as
421 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
422 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
424 * fixed bugs 280 and 312: the checking for multiple definitions in a
425 file is less likely to become confused by uses of inline
427 * fixed bug: the #S reader macro performs the keyword coercion
428 specified for slot names. (reported by Kalle Niemitalo)
429 * fixed bug: lambda lists may contain symbols whose names start with
430 & but are not lambda-list-keywords; their occurrence triggers a
432 * fixed bug 321: define-method-combination argument lambda lists do
433 not cause invalid code to be generated when &optional or &aux
434 variables have default values. (reported by Bruno Haible)
435 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
436 have CLOS classes; this appears also to have fixed reported
437 instability in stack exhaustion detection.
438 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
439 MUFFLE-WARNING when no associated restart is present is now
441 * optimization: rearranged the expansion of various defining macros
442 so that each expands into only one top-level form in a
443 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
445 * optimization: used a previously little-used slot in symbols to
446 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
448 * fixed some bugs revealed by Paul Dietz' test suite:
449 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
451 ** Fixed an optimization bug related to inheritance of initforms
452 from local to shared slots.
453 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
454 ** CAST optimizer forgot to flush argument derived type.
455 ** print/read consistency on floats is now orders of magnitude
456 more likely. (thanks also to Bruno Haible for a similar report
458 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
459 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
460 for objects of type REAL. Make it so.
461 ** SXHASH is specified (infelicitously) to respect similarity,
462 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
463 it so. (thanks to Markus Ziegler)
464 ** on the Alpha, the compiler succeeds in compiling functions
465 returning a known number of arguments greater than 63.
466 ** fixed handling of invalid NIL arguments in keyword position
468 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
470 ** provided a readably-printable representation for RANDOM-STATE
472 ** ensured that pathnames, where they have a namestring, always
473 print using #P"..." syntax.
475 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
476 * Support for the forthcoming 2.0 version of the NetBSD kernel
477 running on x86 hardware has been added. (thanks to Perry
478 E. Metzger most immediately, and others for their past work)
479 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
480 current release version; SBCL's OpenBSD support had been broken
481 since about the time of OpenBSD's switch to ELF binary format.)
482 * [placeholder for DX summary]
483 ** user code with &REST lists declared dynamic-extent, under high
484 speed or space and low safety and debug optimization policy.
485 * The manual has been converted to Texinfo format and the debugger
486 chapter from the cmucl manual has been added.
487 * A facility has been added to extract documentation strings from
488 sbcl and store them as Texinfo-formatted snippets for inclusion in
489 the manual (via Texinfo's @include directive)
490 * bug fix: compiler emitted division in optimized DEREF. (thanks for
491 the test case to Dave Roberts)
492 * bug fix: multidimensional simple arrays loaded from FASLs had fill
493 pointers. (reported by Sean Ross)
494 * bug fix: PROFILE output is printed nicely even for large numerical
495 values. (thanks to Zach Beane)
496 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
497 greater than 32 handle EOF correctly.
498 * bug fix: on X86 an immediate argument of the IMUL instruction is
499 correctly printed in disassembly. (thanks to Lutz Euler)
500 * bug fix: class slots in redefined classes preserve their old
501 values. (thanks to Bruno Haible and Nikodemus Siivola)
502 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
503 succeeds. (reported by Marco Baringer)
504 * fixed some bugs revealed by Paul Dietz' test suite:
505 ** READ-SEQUENCE now works on ECHO-STREAMs.
506 ** RATIONALIZE works more according to its specification. (thanks
509 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
510 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
511 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
512 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
513 should matter to you only if you rebind the printer control
514 variables and then find you want different bindings in the
515 debugger than in the ordinary execution of your program.)
516 * The runtime build system has been tweaked to support building
517 (on SPARC/SunOS) using a C compiler which invokes Sun's own
518 assembler and linker. (thanks to Nikodemus Siivola)
519 * Unbound, undefined, undeclared variables now trigger full
520 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
521 more often programmer error than deliberate exploitation of undefined
523 * optimization: the hash algorithm for strings has changed to one
524 that is less vulnerable to spurious collisions. (thanks to Juho
526 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
527 needless bounds checking. (thanks to Juho Snellman)
528 * optimization: implemented multiplication as a modular
529 (UNSIGNED-BYTE 32) operation on the PPC backend.
530 * fixed some bugs revealed by Paul Dietz' test suite:
531 ** ADJUST-ARRAY now copies the datum in a zero rank array if
533 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
534 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
535 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
537 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
539 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
541 ** ECHO-STREAMs no longer attempt to echo the end of file value to
542 their output stream on EOF from read.
543 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
544 have been read to end-of-file.
545 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
547 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
548 description of determination of which consecutive characters
550 ** Printing the "Space" character with escaping on now yields "#\\ ",
551 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
552 ** Reading floating-point numbers with *READ-BASE* set to a number
553 less than 10 works correctly.
554 ** Reading floating-point numbers with *READ-BASE* set to a number
555 more than 10 works correctly.
556 ** Printing with *PRINT-READABLY* targets the standard readtable, not
557 the readtable currently in effect.
559 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
560 * minor incompatible change: parsing of namestrings on a physical
561 (Unix) host has changed; numbers after the final #\. in a
562 namestring are no longer interpreted as a version field. This is
563 intented to be largely invisible to the user, except that the
564 meaning of the namestring "*.*.*" has changed: it now refers to a
565 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
566 should usually be replaced by
567 (make-pathname :name :wild :type :wild :version :wild)
568 with the added benefit that this is more likely to be portable.
569 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
570 option to OPEN now signals an error if the file being opened
571 exists; this may have an impact on existing code.
572 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
573 signals received, on the PowerPC platforms (both Linux and
574 Darwin). (thanks to Pierre Mai for pointing out the location of
576 * several fixes on OS X: The system now builds and runs cleanly on
577 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
578 (thanks to Brian Mastenbrook)
579 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
580 second-resolution: integer multiples of 1/3600 between -24 and 24.
581 (thanks to Vincent Arkesteijn)
582 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
583 type when called with 1 argument; PEEK-CHAR checked type of
584 PEEK-TYPE only after having read first character from a
585 stream. (reported by Peter Graves)
586 * bug fix: the garbage collector now has much better locality
587 behaviour, and in particular no longer treats all memory as being
588 exhausted when many small objects point to each other in a deeply
590 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
591 recognized as being TYPEP their class.
592 * bug fix: the PUSHNEW documentation string has been corrected.
593 (thanks to Vincent Arkesteijn)
594 * bug fix: defaulting of the value for the last of an atypically
595 large number of multiple values being bound was not being
596 performed correctly on the Alpha or PPC platforms
597 * optimization: implemented multiplication as a modular
598 (UNSIGNED-BYTE 32) operation on the x86 backend.
599 * optimization: SEARCH on simple-base-strings can now be open-coded.
600 (see also contrib/compiler-extras.lisp for inspiration for
601 teaching the compiler about the Boyer-Moore algorithm).
602 * value, returned by MAX (and MIN) called with several EQUALP, but
603 not EQL, arguments now does not depend on compiler settings.
604 * fixed some bugs revealed by Paul Dietz' test suite:
605 ** in stack analysis liveness information is propagated from
606 non-local entry points.
607 ** pathwise CAST removing failed when the CAST node did not start
609 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
610 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
612 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
613 host is already defined.
614 ** RENAME-FILE works on streams instead of signalling an internal
616 ** PEEK-CHAR uses the current readtable when determining whether
617 or not a character is whitespace.
618 ** MERGE-PATHNAMES handles the case when the pathname does not
619 specify a name while the default-pathname specifies a version.
620 ** Pathnames now stand a better chance of respecting print/read
622 ** Attempting to use standardized file system operators with a
623 pathname with invalid :DIRECTORY components signals a
625 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
627 ** DIRECTORY on logical pathnames is more correct.
628 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
629 signal a TYPE-ERROR if their argument is not a stream.
630 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
631 designator argument does not designate a stream.
632 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
633 examining the synonym.
634 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
636 ** OPEN and WITH-OPEN-STREAM allow opening streams with
637 element-type larger than ([UN]SIGNED-BYTE 32).
639 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
640 * When built with the :SB-FUTEX feature, threaded builds now take
641 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
642 for faster/more reliable mutex and condition variable support.
643 * Incompatible change (but one you probably shouldn't have been using
644 anyway): the interface and code for arbitrating between multiple
645 threads in the same user session has been redesigned.
646 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
647 error when called without an explicit environment argument.
648 (thanks to Nikodemus Siivola)
649 * bug fix: buffered :DIRECTION :IO streams are less likely to become
650 confused about their position. (thanks to Adam Warner and Gerd
652 * bug fix: Pretty printing backquoted forms with unquotations in the
653 argument list position of various code constructs such as LAMBDA
654 now works correctly. (reported by Paul Dietz)
655 * bug fix: Pretty printing unquotations no longer loses all
656 stream position information.
657 * optimization: performance of string output streams is now less
658 poor for multiple small sequence writes.
659 * optimization: performance of CSUBTYPEP in the presence of complex
660 expressions involving CONS and NOT many times has been improved.
661 (reported by Paul Dietz)
662 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
664 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
665 streams for the REPL, for the debugger, and so on. (thanks to
667 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
668 * fixed some bugs revealed by Paul Dietz' test suite:
669 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
670 is ignored if it is too small, rather than propagating through
671 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
672 ** extremely complex negations of CONS types were not being
673 sufficiently canonicalized, leading to inconsistencies in
675 ** VALUES tranformer lost derived type.
677 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
678 * fixed a bootstrapping bug: the build process no longer assumes
679 that the various BOOLE-related constants have the same value in
680 host and target lisps. (noted by Paul Dietz' test suite on an
681 SBCL binary built from CLISP)
682 * The system can now be dynamically linked on the MIPS platform,
683 which enables dynamic loading of foreign code from Lisp. (thanks
684 to Ralf Baechle for discussions on the MIPS ABI)
685 * The system now records debugging information for its own source
686 files in a filesystem-position-independent manner, relative to
687 the "SYS" logical host.
688 * fixed a compiler bug: MV-LET convertion did not check references
689 to the "max args" entry point. (reported by Brian Downing)
690 * tweaked disassembly notes to be less confident about proclaiming
691 some instruction as an LRA. (thanks to Brian Downing)
692 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
693 now each have their own history, command character, and other
694 characteristics. (thanks to David Lichteblau)
695 * fixed some bugs revealed by Paul Dietz' test suite:
696 ** compiler failure in compiling LOGAND expressions including a
698 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
699 shift greater than 32.
700 ** FLUSH-DEST did not mark blocks for type check regeneration.
701 ** HANDLER-CASE failed to accept declarations in handler clauses
702 in some circumstances.
704 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
705 * New code in contrib/sb-introspect (still probably not entirely
706 stable yet) provides some support for smart Lisp development
707 environments like SLIME.
708 * The conditions signalled for errors occurring when loading .fasl
709 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
710 in a way which should help ASDF recover gracefully.
711 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
712 stuff has been cleaned up. If you code contrib/ stuff, this might
713 affect you, and you can look at contrib/README, contrib/STANDARDS,
714 and/or the 0.8.4.27 diff to check.
715 * In full calls the compiler now does not generate checks for declared
716 argument types for all arguments.
717 * various threading fixes
718 ** and some experimental patches which didn't make it into
719 the main tree for this release, but which are shipped in
720 contrib/experimental-thread.patch as a possible fix for some
721 failures (deadlock, spinning...) in GC-intensive multithreaded
723 * fixed PPC build problem (source code incompatibility of different
724 library versions): added offsetof() hackery which attempts to divine
725 where glibc maintainers put uc_mcontext today
726 * fixed bug 282: compiler does not trust type assertions while passing
727 arguments to a full call.
728 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
729 &OPTIONAL VALUES type parameter.
730 * fix bug 214: algorithm for noting rejected templates is now more
731 similar to that of template seletion. (also reported by rydis on
733 * fixed bug 141b: printing backquoted information readably and prettily
734 inserts a space where necessary.
735 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
736 (CHARACTER 10) are now reported as errors, rather than propagated
737 as unknown types. (reported by piso on #lisp)
738 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
739 with values NIL and :ERROR. (thanks to Milan Zamazal)
740 * fixed bug 191c: CLOS now does proper keyword argument checking as
741 described in CLHS 7.6.5 and 7.6.5.1.
742 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
743 longer raise an error; further, using a list as a for-as-arithmetic
744 counter now raises a meaningful error.
745 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
746 now understood by sequence creation functions such as MAKE-SEQUENCE
748 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
749 a STRING-INPUT-STREAM.
750 * compiler enhancement: SIGNUM is now better able to derive the type
752 * type declarations inside WITH-SLOTS are checked. (reported by
754 * fixed some bugs revealed by Paul Dietz' test suite:
755 ** incorrect optimization of TRUNCATE for a positive first
756 argument and negative second.
757 ** compiler failure in let-convertion during flushing dead code.
758 ** compiler failure while deriving type of TRUNCATE on an
759 interval, containing 0.
760 ** ASH of a negative bignum by a negative bignum count now returns
762 ** intersection of CONS types now canonicalizes properly, fixing
763 inconsistencies in SUBTYPEP.
765 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
766 * incompatible change: The --disable-debugger command line
767 option now clobbers the debugger at a more fundamental
768 level, by redefining #'INVOKE-DEBUGGER instead of by
769 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
770 is specified by ANSI to ignore *DEBUGGER-HOOK* and
771 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
772 enter the debugger REPL and then suffer recursive errors
773 because *DEBUG-IO* is also messed up in --disable-debugger mode;
774 while under the new system, BREAK in --disable-debugger mode
775 terminates the system just as an unhandled error would.
776 * fixed compiler performance when processing loops with a step >1;
777 * bug fix: DOCUMENTATION now retrieves generic function
778 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
779 support has been systematized, and now supports the methods
780 specified by ANSI, along with a default method and a method for
781 slot documentation. (reported by Nathan Froyd)
782 * bug fix: effective methods associated with a generic function are
783 no longer cached over a change of that generic function's method
784 combination. (reported by Andreas Fuchs)
785 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
786 names a non-existent directory. (thanks to Andreas Fuchs)
787 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
788 the PPC platform, lead to stack corruption; this has been fixed.
789 (reported by Rainer Joswig)
790 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
791 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
792 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
793 arithmetic in general, is now much more reliable on the PPC
795 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
796 platform now returns the right answer.
797 * optimization: restored some effective method precomputation in
798 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
799 precomputation is now tunable.
800 * optimization: compiler-internal data structure use has been
801 reviewed, and changes have been made that should improve the
802 performance of the compiler by about 20%.
803 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
804 simple-base-strings and simple-bit-vectors is improved.
805 * optimization: the optimization of 32-bit logical and arithmetic
806 functions introduced in version 0.8.3 on the x86 has been
807 implemented on the mips, ppc and sparc platforms; an
808 implementation of the same facility, but for 64-bit arithmetic,
809 has been added for the alpha.
810 * microoptimization: the compiler is better able to make use of the
811 x86 LEA instruction for multiplication by constants.
812 * bug fix: in some situations compiler did not report usage of
813 generic arithmetic in (SPEED 3) policy.
814 * bug 145b fix: compiler used wrong type specifier while converting
815 MEMBER-types to numeric.
816 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
818 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
819 index argument now works properly on the Alpha platform.
820 * bug fix: floating point exception treatment on the Alpha platform
822 * bug fix: FILE-POSITION works much better on string input and
823 output streams. (thanks to Nikodemus Siivola)
824 * bug fix: many threading/garbage collection symptoms sorted.
825 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
826 might be pseudo-atomic.
827 * internal change: Stopping for GC is now done with signals not
828 ptrace. GC is now done in whichever thread wanted it, instead of
830 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
832 * bug fix: result form in DO is not contained in the implicit
834 * incompatible change: ICR structure is changed; the value part of
835 CONTINUATION is now called LVAR; corresponding functions are
836 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
837 * added type deriver for ISQRT (thanks to Robert E. Brown).
838 * bug fix: better support for loading from the command line when an
839 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
841 * fixed some bugs revealed by Paul Dietz' test suite:
842 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
843 ** ROUND and FROUND now give the right answer when given very
844 small float arguments.
845 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
847 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
848 ** (GCD 0 <negative-integer>) returned <negative-integer>.
849 ** LCM should return a non-negative integer.
850 ** PARSE-INTEGER returned the index of a terminator instead of the
851 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
852 ** PARSE-INTEGER returned an incorrect index being applied to a
854 ** LCM with two arguments of 0 returns 0 rather than signalling
856 ** unsigned addition of a 32-bit constant with the high bit set no
857 longer causes an internal compiler error on the x86.
858 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
859 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
860 with negative last argument.
861 ** byte specifiers with zero size and position no longer cause
862 an error during type derivation.
863 ** bignum multiplication on the Alpha platform now returns the
865 * porting: The system now builds on SuSE AMD64, although it still
866 generates a 32-bit binary.
867 * .fasl file incompatibility: The fasl file version number has
868 been incremented (because of the changes to internal compiler
869 data structures referred to above).
871 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
872 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
873 more accurately, on the Darwin kernel running on PowerPC hardware.
874 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
875 * Compiler code deletion notes now signal a condition of type
876 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
877 an associated MUFFLE-WARNING restart.
878 * The compiler now performs limited argument count validation of
879 constant format strings in FORMAT, and where appropriate in ERROR,
880 CERROR and WARN. (thanks to Gerd Moellmann)
881 * New ASDF-INSTALL contrib can be used for automatic download and
882 installation of third-party Lisp code from CCLAN or other sites
884 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
885 which forces another thread to execute a function supplied by the
887 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
888 now accept and act upon their :ELEMENT-TYPE keyword argument.
889 (reported by Martin Atzmueller, Edi Weitz)
890 * bug fix: FILE-POSITION now accepts position designators up to
891 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
892 is the greater. (thanks to Patrik Nordebo)
893 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
894 Kalle Olavi Niemitalo)
895 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
896 printable. (reported by Eric Marsden)
897 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
898 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
899 * x86 bug fix in control stack exhaustion checking: now shows backtrace
900 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
901 (thanks to Stig Sandoe)
902 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
903 UNREAD-CHAR now correctly includes the unread character in the
904 target sequence. (thanks to Gerd Moellmann)
905 * bug fix in threaded builds: the system can now be suspended and
906 resumed by shell job control with minimal disruption.
907 * bug fixes in times and timezones >2038AD
908 * better handling of "where is GNU make?" problem in build scripts
909 (thanks to Nikodemus Siivola)
910 * new optimization: inside a named function any reference to a
911 function with the same name is considered to be a self-reference;
912 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
913 optimization quality.
914 * new optimization on x86: logical functions and + now have
915 optimized (UNSIGNED-BYTE 32) versions, which are automatically
916 used when the result is truncated to 32 bits.
917 * VALUES declaration is partially enabled.
918 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
919 * fixed some bugs revealed by Paul Dietz' test suite:
920 ** The system now obeys the constraint imposed by
921 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
922 types form a lattice under type intersection.
923 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
924 ** ASSOC now ignores NIL elements in an alist.
925 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
926 and (1+ MOST-POSITIVE-FIXNUM) answers.
927 ** The addition of a method with invalid qualifiers to a generic
928 function does not cause an error to be signalled immediately;
929 a warning is signalled, and the error is generated only on
930 calling the generic function.
931 * changed .fasl file version number, in part to add type codes for
932 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
933 obscure ANSI requirements
935 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
936 * fixed bug 148: failure to inline-expand a local function left
937 garbage, confusing the compiler.
938 * fixed bugs 3cd: structure slot readers perform type check if the
939 slot can have an invalid value (i.e. it is either not initialized
940 or can be written with a less specific slot writer).
941 * bug fix: the compiler now traps array references to elements off
942 the end of an array; previously, the bounds checking in some
943 circumstances could go off-by-one.
944 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
946 * type declarations for array element types now obey the description
947 on the CLHS page "Declaration TYPE", as per discussions on
948 sbcl-help around 2003-05-08. This means that a declaration
949 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
950 declaration, all references to BAR will be asserted or assumed
951 (with THE, so dependent on compiler policy) to involve objects of
952 type FOO. Note that no such declaration is implied in
953 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
954 * declared types of functions from the "Conditions"
955 chapter. (reported by Paul Dietz)
956 * bug fix: CERROR accepts a function as its first argument.
957 * bug fix: NTH an NTHCDR accept a bignum as index
958 arguments. (reported by Adam Warner)
959 * optimization: character compare routines now optimize comparing
960 against a constant character. (reported by Gilbert Baumann)
961 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
962 argument now works properly on the MIPS platform.
963 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
964 * repeated evaluation of the same DEFSTRUCT, a slot of which is
965 declared to have a functional type, does not cause an error
967 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
968 many :DEFAULT-INITARGS. (reported by Istvan Marko)
969 * fixed bug: if last continuation of a deleted block has a
970 destination, this destination should be deleted too. (reported by
972 * fixed a bug in the bootstrap process: the host compiler's values
973 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
974 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
975 test case from Patrik Nordebo)
976 * improved the ability of the disassembler on the PPC platform to
977 provide helpful disassembly notes.
978 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
979 the class in more cases than previously.
980 * bug fix: FILE-POSITION now understands :START and :END for
981 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
982 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
983 8) data. (thanks to David Lichteblau)
984 * bug fix: it is possible to add a method to a generic function
986 * bug fix: reader failed to signal END-OF-FILE inside an
987 object representation. (reported by Nikodemus Siivola)
988 * fixed some bugs revealed by Paul Dietz' test suite:
989 ** LAST and [N]BUTLAST should accept a bignum.
990 ** condition slot accessors are methods.
991 ** (VECTOR NIL) is a subtype of STRING.
993 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
994 * minor incompatible change: some nonsensical specialized lambda
995 lists (used in DEFMETHOD) which were previously ignored now signal
997 * minor incompatible change: the system is now aware of the types of
998 variables in the COMMON-LISP package, and will signal errors for
999 most violations of these type constraints (where previously they
1000 were silently accepted).
1001 * minor incompatible change: COMPILE-FILE now uses the freedom
1002 afforded (ANSI 3.2.2.3) to use derived function types for
1003 functions defined in the same file. This also permits the system
1004 to warn on static type mismatches and function
1005 redefinition. (Currently it does not work with high DEBUG level.)
1006 * minor incompatible change: VALUES declaration is disabled.
1007 * When issuing notes, the compiler now signals a condition of type
1008 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1009 restart for use in user handlers. It is expected that the
1010 COMPILER-NOTE condition will eventually become a condition
1011 supertype to a hierarchy of note types, which will then be
1012 handleable in a similar fashion. However, at the moment, no such
1013 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1014 but it's an implementation detail, not a classification for the
1016 * Changes in type checking closed the following bugs:
1017 ** type checking of unused values (192b, 194d, 203);
1018 ** template selection based on unsafe type assertions (192c, 236);
1019 ** type checking in branches (194bc).
1020 * A short form of VALUES type specifier has ANSI meaning (it has
1021 increased the number of situations when SBCL cannot perform type
1023 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1024 keywords or constants is permissible.
1025 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1026 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1027 classes. (thanks to Antonio Martinez)
1028 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1029 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1030 argument to a pretty-print stream. Instead, it leaves any such
1031 operations to DESCRIBE-OBJECT methods.
1032 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1034 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1035 lambda lists. (thanks to David Lichteblau)
1036 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1037 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1038 (thanks to Gerd Moellmann)
1039 * fixed bug 246: increased compilation speed of long
1040 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1042 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1044 * DEFCONSTANT now throws a condition of type
1045 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1046 constant to a non-EQL value; CONTINUE and ABORT restarts
1047 respectively change and preserve the value.
1048 * fixed bug 63: The code walker, part of the implementation of CLOS,
1049 is now better at handling symbol macros.
1050 * bug fix: There is no longer an internal implementation type named
1051 CL:LENGTH. (reported by Raymond Toy)
1052 * bug fix: In macro-like defining macros/special operators the
1053 implicit block does not enclose the lambda list.
1054 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1055 enclosed in parentheses) are not suitable as type specifiers, and
1056 their use properly signals an error now.
1057 * bug fix: An argument count mismatch for a type specifier in code
1058 being compiled no longer causes an unhandled error at compile
1059 time, but signals a compile-time warning.
1060 * fixed simple vector readable printing
1061 * bug fix: DESCRIBE takes more care over whether the class
1062 precedence list slot of a class is bound before accessing it.
1063 (reported by Markus Krummenacker)
1064 * bug fix: FORMATTER can successfully compile pretty-printer format
1065 strings which use variants of the ~* directive inside.
1066 * bug fix: SEARCH now applies its TEST predicate to the elements of
1067 the arguments in the correct order. (thanks to Wolfhard Buss)
1068 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1069 in type inference. (thanks to Robert E. Brown)
1070 * bug fix: Reading in symbols with an explicit package name of ""
1071 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1072 * fixed some bugs revealed by Paul Dietz' test suite:
1073 ** NIL is now allowed as a structure slot name.
1074 ** Arbitrary numbers, not just REALs, are allowed in certain
1075 circumstances in LOOP for-as-arithmetic clauses.
1076 ** Multiple class redefinitions before slot access no longer
1077 causes a type error.
1078 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1079 association between the name and a class.
1080 ** Generic functions with non-standard method-combination and over
1081 five methods all of which return constants no longer return NIL
1082 after the first few invocations. (thanks to Gerd Moellmann)
1083 ** CALL-NEXT-METHOD with no arguments now passes the original
1084 values of the arguments, even in the presence of assignment.
1085 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1087 ** DISASSEMBLE works with closures and funcallable instances.
1088 ** ADD-METHOD now returns the generic function, not the new method.
1089 ** FIND-METHOD signals an error if the lengths of the specializers
1090 is incompatible with the generic function, even if the ERRORP
1092 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1093 which its argument is a member.
1094 ** DEFCLASS only redefines the class named by its class-name
1095 argument if that name is the proper name of the class;
1096 otherwise, it creates a new class.
1097 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1098 of the UNBOUND-SLOT condition to the name of the slot.
1099 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1100 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1101 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1102 SLOT-MAKUNBOUND in the specified fashion.
1104 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1105 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1106 cross-compilation host. As a consequence, we can now bootstrap our
1107 way up to SBCL starting with a bare gcc toolchain and human-readable
1108 source code (first the source to CLISP, then the source to SBCL).
1109 * A contributed module containing a partial implementation of the
1110 simple-streams interface has been included. (thanks to Rudi
1112 * A contributed module implementing the RFC1321 Message Digest
1113 Algorithm, known as MD5, has been included.
1114 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1115 no longer has any effect, as the code controlled by this feature
1116 has been deleted. (As far as we know, no-one has ever built using
1117 this feature, and its semantics were confused in any case).
1118 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1119 work on conditions (as required by the ANSI specification),
1120 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1121 expected behaviour on conditions. Users should note, however,
1122 that such behaviour is not required by the ANSI specification,
1123 and so use of this behaviour may render their code unportable.
1124 * fixed some bugs revealed by Paul Dietz' test suite:
1125 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1127 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1128 ** SXHASH on condition objects no longer returns NIL.
1129 ** :ALLOCATION :CLASS slots are better treated; their values are
1130 updated on class redefinition, and initforms inherited from
1131 superclasses are applied.
1132 ** REMOVE-METHOD returns its generic function argument even when
1133 no method was removed.
1134 ** SHARED-INITIALIZE now initializes the values of the requested
1135 slots, including those with :ALLOCATION :CLASS.
1136 ** ALLOCATE-INSTANCE now works on structure classes defined via
1137 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1139 ** SLOT-EXISTS-P now works on conditions, as well as structures
1141 ** MAKE-LOAD-FORM now has the required methods on
1142 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1143 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1144 keyword, and now implements the SLOT-NAMES argument.
1145 ** methods with &OPTIONAL arguments no longer allow too many
1146 arguments to be passed in the call without error.
1147 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1148 option is consistent with the required arguments of the generic
1149 function lambda list.
1150 * bug fix: REQUIRE accepts a string designator. (Thanks to
1152 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1153 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1154 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1155 * bug fix: The compiler now checks for duplicated variables in macro
1157 * bug fix: SETQ on globals returns the correct value.
1158 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1159 not a COMPILER-ERROR (followed by some other strange error on
1160 choosing the CONTINUE restart).
1161 * bug fix: make.sh and friends are now more consistent in the way that
1162 they look for GNU "make".
1164 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1165 * experimental native threads support (on x86 Linux >=2.4 only).
1166 This is not compiled in by default: you need to add :SB-THREAD to
1167 the target features. See the "Beyond ANSI" chapter of the manual
1169 * fix for longstanding nonANSIism: The old distinction between
1170 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1171 The return value from CL:FIND-CLASS is now a CLOS class, and
1172 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1173 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1174 * An interface to the MetaObject Protocol, as described in Kiczales,
1175 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1176 MIT Press, 1991, is available from the SB-MOP package.
1177 * incompatible change: the SB-PCL package should now be considered
1178 a private implementation detail, and no longer a semi-private MOP
1180 * minor incompatible change: due to rearrangement for threads, the
1181 control stack and binding stack are now allocated at arbitrary
1182 addresses instead of being hardcoded per-port. Users affected by
1183 this probably have to be doing advanced things with shared
1184 libraries, and will know who they are.
1185 * minor incompatible change: Previously, all --eval forms used were
1186 processed with READ before any of them were processed with EVAL.
1187 Now each --eval form is processed with both READ and EVAL before
1188 the next --eval form is processed. (Thus package operations like
1189 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1190 work as the user might reasonably expect.)
1191 * minor incompatible change: *STANDARD-INPUT* is now only an
1192 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1194 * minor incompatible change: Y-OR-N-P is now character-oriented,
1195 not line oriented. Also, YES-OR-NO-P now works without errors.
1196 (thanks to Antonio Martinez)
1197 * sb-aclrepl module improvements: an integrated inspector, added
1198 repl features, and a bug fix to :trace command.
1199 * Known functions, which cannot be open coded by the backend, are
1200 considered to be able to check types of their arguments. (fixing
1201 a bug report by Nathan J. Froyd)
1202 * fixed a bug in computing method discriminating functions: It is
1203 now possible to define methods specialized on classes which have
1204 forward-referenced superclasses. (thanks to Gerd Moellmann)
1205 * fixed evaluation order in optional entries (reported by Gilbert
1207 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1208 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1209 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1210 required-by-AMOP NAME argument, as well as CLASS and
1211 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1212 * fixed bug 20: DEFMETHOD can define methods using names that are
1213 not the proper names of classes to designate class specializers.
1214 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1215 Unix file descriptors, instead of blowing up. (thanks to Antonio
1217 * Garbage collection refactoring: user-visible change is that a
1218 call to the GC function during WITHOUT-GCING will not do garbage
1219 collection until the end of the WITHOUT-GCING. If you were doing
1220 this you were probably losing anyway.
1221 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1222 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1223 TYPEP the latter but not the former.
1224 * The compiler issues a full WARNING for calls to undefined functions
1225 with names from the CL package.
1226 * MAP-INTO for a vector destination is open coded. (reported by
1227 Brian Downing on c.l.l)
1228 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1229 documentation string.
1230 * fixed some bugs revealed by Paul Dietz' test suite:
1231 ** COPY-ALIST now signals an error if its argument is a dotted
1233 ** Condition slots are now accessed more correctly in the presence
1234 of multiple initargs for a given slot.
1235 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1236 exclude restarts of the same name associated with a different
1238 ** DEFCLASS of forward-referenced classes with another
1239 forward-referenced class in the superclasses list no longer
1241 ** Condition slots are now initialized once each, not multiple
1242 times. (thanks to Gerd Moellmann)
1243 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1245 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1246 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1247 arguments contain duplicated elements.
1248 ** RESTART-CASE understands local macros.
1249 ** RESTART-CASE associates exactly its own restarts with a condition.
1250 ** ENDP in safe mode checks its argument to be of type LIST.
1251 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1252 in question is unbound.
1253 ** Optimized MAKE-INSTANCE functions no longer cause internal
1254 assertion failures in the presence of duplicate initargs.
1255 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1256 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1257 propagated even in the ctor optimized implementation of
1259 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1261 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1262 * a better implementation of SXHASH on (simple) bit vectors,
1263 measured both in execution speed and in distribution of results
1264 over the positive fixnums, has been installed. Likewise, a better
1265 implementation of EQUAL for simple bit vectors is now available.
1266 * fixed CEILING optimization for a divisor of form 2^k.
1267 * fixed bug 240 (emitting extra style warnings "using the lexical
1268 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1269 by Antonio Martinez)
1270 * fixed SXHASH, giving different results for NIL depending on type
1271 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1272 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1273 variable. (found by Rolf Wester)
1274 * SBCL does not ignore type declarations for special
1275 variables. (reported by rif on c.l.l 2003-03-05)
1276 * some bug fixes in contrib/sb-aclrepl/
1277 * fixed some bugs revealed by Paul Dietz' test suite:
1278 ** a bug in the CONS type specifier, whereby the CAR and CDR
1279 types got intertwined, has been fixed;
1280 ** the type system is now able to reason about the interaction
1281 between INTEGER and RATIO types more completely;
1282 ** APPEND, [N]REVERSE and NRECONC check that those their
1283 arguments, which must be proper lists, are really so;
1284 ** An array specialized to be unable to hold elements has been
1285 implemented, as required -- yes, really -- by ANSI;
1286 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1287 on malformed property lists;
1289 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1290 * incompatible packaging change: in line with Unix convention,
1291 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1292 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1293 * REQUIRE and PROVIDE are now optionally capable of doing something
1294 useful. See the documentation string for REQUIRE.
1295 * infrastructure for a managed SBCL contrib system: contributed
1296 modules in this release include:
1297 ** the ASDF system definition facility;
1298 ** an interface to the BSD Sockets API;
1299 ** an ACL-like convenience interface to the repl;
1300 (thanks to Kevin Rosenberg)
1301 ** an implementation of ROTATE-BYTE, with efficient implementation
1303 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1304 gives a closer approximation to the right answer than previously.
1305 (thanks to Raymond Toy)
1306 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1307 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1308 optional environment arguments, as required by ANSI.
1309 * fixed bugs in other functions taking environment objects, allowing
1310 calls with an explicit NIL environment argument to be compiled
1312 * fixed bug 228: primary return values from
1313 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1314 COMPILE or FUNCTION.
1315 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1316 :TYPE will no longer signal errors on innocuous objects.
1317 * fixed bug 231b: SETQ is better at respecting type declarations in
1318 the lexical environment.
1319 * fixed a bug in DEFCLASS: classes named by symbols with no or
1320 unprintable packages can now be defined.
1321 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1322 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1323 * fixed compiler failure related to checking types of functions.
1324 (reported by Robert E. Brown)
1325 * the compiler is now much more consistent in its error-checking
1326 treatment of bounding index arguments to sequence functions: in
1327 (SAFETY 3) code, errors will be signalled in almost all cases if
1328 invalid sequence bounding indices are passed to functions defined
1329 by ANSI to operate on sequences.
1330 * fixed a bug in the build procedure: documentation of SBCL-specific
1331 packages is now preserved and available in the final Lisp image.
1332 * lifted FDEFINITION lookup out of loops in the implementation of
1333 many list operations. (thanks to Robert E. Brown)
1334 * fixed a bug in the reader: the #n# reader macro now works for
1335 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1336 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1337 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1338 E. Brown and Tony Martinez respectively)
1339 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1340 SLOT-BOUNDP: in particular, it is now able to optimize them much
1341 better, and is now not vulnerable to having packages renamed.
1342 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1343 always called when a slot is not present in an instance. (thanks
1345 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1346 longer signal an error on unreading a character following EOF on
1347 the previous constituent stream. (thanks to Tony Martinez)
1348 * fixed some bugs revealed by Paul Dietz' test suite:
1349 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1350 not just nonnegative fixnums;
1351 ** the logical bit-array operators such as BIT-AND now accept an
1352 explicit NIL for their "opt-arg" argument (to indicate a
1353 freshly-consed result bit-array);
1354 ** ELT now signals an error on an invalid sequence index in safe
1356 ** the type system is now cleverer about negations of numeric
1357 types, and consequently understands the BIGNUM and RATIO types
1359 ** the type system is now cleverer about the interaction between
1360 INTEGER and RATIO types: while bugs still remain, many more
1361 cases are accurately computed;
1362 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1363 if it is in the last clause;
1364 ** CONSTANTLY now correctly returns a side-effect-free function in
1366 ** DECLARE is no longer treated as a special-operator; in
1367 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1368 * incremented fasl file version number due to the change in the
1369 DEFSTRUCT-SLOT-DESCRIPTION structure.
1371 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1372 * minor incompatible change: code processed by the "interpreter" or
1373 EVAL now has a compilation optimization policy of (DEBUG 2)
1374 (changed from (DEBUG 1)) to improve debuggability of interactive
1375 development, and to allow the use of the debug RETURN command in
1377 * an experimental implementation of the RETURN command for the
1378 debugger has been included. (thanks to Frederik Kuivinen)
1379 * fixed bug 62: constraints were not propagated into a loop.
1380 * fixed bug in embedded calls of SORT (reported and investigated by
1382 * fixed some bugs revealed by Paul Dietz' test suite:
1383 ** printing and reading of arrays with some dimensions having
1384 length 0 (thanks to Gerd Moellmann);
1385 ** BOA constructor with &AUX argument without a default value does
1386 not cause a type error;
1387 ** CONSTANTP now returns true for all self-evaluating objects.
1389 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1390 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1391 accessors that are related by inheritance, as specified in the
1392 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1393 Valtteri Vuorikoski)
1394 * The compiler is now able to inline functions that were defined in
1395 a complex lexical environment (e.g. inside a MACROLET).
1396 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1398 * Support for the upcoming FreeBSD-5.0 release has been included.
1399 (thanks to Dag-Erling Smorgrav)
1400 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1401 effect when it is not in a toplevel context.
1402 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1403 stand a better chance of being correct. (thanks to Gerd
1405 * fixed bug in COERCE, which now signals an error on coercing a
1406 rational to a bounded real type which excludes the expected
1408 * The compiler is now able to derive types more accurately from the
1409 COERCE and COMPILE functions.
1410 * fixed bug 223: functional binding is considered to be constant
1411 only for symbols in the CL package.
1412 * fixed bug 231: SETQ did not check the type of a variable being set
1413 (reported by Robert E. Brown)
1414 * A new optimization for MAKE-INSTANCE has been included, fixing
1415 various bugs (including relating to :ALLOCATION :CLASS slots and
1416 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1418 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1419 ** As required by ANSI, LOOP now disallows anonymous collection
1420 clauses such as COLLECT I in conjunction with aggregate boolean
1421 clauses such as THEREIS (= I 1);
1422 ** LOOP now signals an error when any variable is reused in the
1423 same loop (including the potentially useful construct analogous
1424 to WITH A = 1 WITH A = (1+ A);
1425 ** IT is only a special loop symbol within the first clause of a
1426 conditional loop clause;
1427 ** LOOP with a typed iteration variable over a hashtable now
1428 signals a type error iff it should.
1429 * fixed some other bugs revealed by Paul Dietz' test suite:
1430 ** FILE-STREAM now names the class previously known as FD-STREAM;
1431 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1432 argument) no longer signals an error;
1433 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1434 of the slot symbol, rather than using the current package
1435 ((:CONC-NAME "") continues to intern the slot's name in the
1437 * incremented fasl file version number, because of the incompatible
1438 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1439 of the new implementation of DEFINE-COMPILER-MACRO.
1441 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1442 * Support for building SBCL for MIPS platforms running in
1443 little-endian mode has now been checked in, and basic
1444 functionality on said platforms verified.
1445 * minor incompatible change: PCL now records the pathname of a file
1446 in which methods and the like are defined, rather than its
1448 * minor incompatible change: TRUENAME now considers the truename of
1449 a file naming a directory to be the pathname with :DIRECTORY
1450 component indicating that directory.
1451 * minor incompatible change: a NAMED clause in the extended form of
1452 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1453 reason for the previous behaviour is unclear.
1454 * more systematization and improvement of CLOS and MOP conformance
1455 in PCL (thanks to Gerd Moellman and Pierre Mai):
1456 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1458 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1459 primary methods with no specializers;
1460 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1462 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1463 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1464 FORWARD-REFERENCED-CLASSes; error reporting on
1465 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1467 ** SXHASH on CLOS instances now uses a slot internal to the
1468 instance to return different numbers on distinct instances,
1469 while preserving the same return value through invocations of
1471 ** DEFMETHOD signals errors when methods with longer incongruent
1472 lambda lists are added to generic functions;
1473 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1474 CLASS, as specified in AMOP;
1475 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1476 on the order returned by the primary method for classes of
1477 class STANDARD-CLASS;
1478 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1479 * fixed some bugs shown by Paul Dietz' test suite:
1480 ** DOLIST puts its body in TAGBODY;
1481 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1483 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1484 value producing form;
1485 ** if more variables are given to PROGV than values, extra
1486 variables are bound and made to have no value;
1487 ** NSUBSTITUTE on list arguments gets the right answer with
1489 ** ELT signals an error of type TYPE-ERROR when the index argument
1490 is not a valid sequence index;
1491 ** LOOP signals (at macroexpansion time) an error of type
1492 PROGRAM-ERROR when duplicate variable names are found;
1493 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1494 ** FUNCALL of special-operators now cause an error of type
1496 ** PSETQ now works as required in the presence of side-effecting
1497 symbol-macro places;
1498 ** NCONC accepts any object as its last argument;
1499 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1501 ** loop-for-as-package does not require a package to be explicitely
1503 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1505 * fixed bug 166: compiler preserves "there is a way to go"
1506 invariant when deleting code.
1507 * fixed bug 172: macro lambda lists with required arguments after
1508 &REST arguments now cause an error to be signalled. (thanks to
1510 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1511 bug. (thanks to Matthew Danish)
1512 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1514 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1515 arguments are lexically rebound. (thanks to Gerd Moellmann and
1517 * fixed bug 194: error messages are now more informative when there
1518 is no primary method applicable in a call to a generic
1519 function. (thanks to Gerd Moellmann)
1520 * fixed bug in command line argument checking (thanks to Julian
1522 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1523 (thanks to Matthew Danish)
1524 * incremented fasl file version number, because of the
1525 SXHASH-related changes in the layout of CLOS data structures
1527 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1528 * minor incompatible change: The runtime (the Unix executable named
1529 "sbcl") is now much pickier about the .core files it will load.
1530 Essentially it now requires .core files to descend from the same
1531 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1532 as the runtime does. (The intent is to prevent the crashes which
1533 can occur, and which can even be reported as mysterious failures,
1534 when people patch the sources or change the build parameters
1535 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1536 sbcl and .core files.)
1537 * fixed bug: VALUES-LIST is no longer optimized away.
1538 * fixed bug 142: The FFI conversion of C string values to Lisp
1539 string values no longer conses excessively. (thanks to Nathan
1540 Froyd porting Raymond Toy's fix to CMU CL)
1541 * began to systematize and improve MOP conformance in PCL (thanks to
1542 Nathan Froyd, Gerd Moellman and Pierre Mai):
1543 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1545 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1546 ** FINALIZE-INHERITANCE is now called on class finalization;
1547 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1548 argument precedence order.
1549 * fixed bug 202: The compiler no longer fails on functions whose
1550 derived types contradict their declared type.
1551 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1552 so it can be non-toplevel.
1553 * The fasl file version number has changed (because of the new
1554 implementation of DEFMACRO).
1555 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1556 safe code, that any length requirement by their type-specifier
1557 argument is valid. The exceptions to this are described in bug
1559 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1560 functions now check the types of their inputs as required by ANSI.
1561 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1562 introduced symbol is DECLAREd to be SPECIAL.
1563 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1564 * fixed bug: :COUNT argument to sequence functions may be negative
1565 * fixed bug: body of DO-SYMBOLS may contain declarations
1566 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1567 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1568 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1569 symbol macro only once
1570 * fixed printing of call frame when argument list is unavailable
1571 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1572 * compiler no longer signals WARNING on unknown keyword
1575 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1576 * A beta-quality port to the mips architecture running Linux,
1577 based on the old CMUCL backend, has been made. It has been tested
1578 on a big-endian kernel, and works sufficiently well to be able to
1579 rebuild itself; it has not been tested in little-endian mode.
1580 * fixed an inconsistency between gencgc.c and purify.c which made
1581 dumping/loading .core files unreliable
1582 * fixed bug 120a: The compiler now deals correctly with IFs where
1583 the consequent is the same as the alternative, instead of
1584 misderiving the return type. (thanks to Alexey Dejneka)
1585 * fixed bug 113: Logical pathnames are now dumpable (the logical
1586 host is resolved at load-time, throwing an error if it is not
1588 * fixed bug 174: FORMAT's error message is slightly clearer when a
1589 non-printing character is used in a format directive.
1590 * fixed several bugs in compiler checking of type declarations, i.e.
1591 violations of the Python "declarations are assertions" principle
1592 (thanks to Alexey Dejneka)
1593 * fixed several bugs in PCL's error checking (thanks to Gerd
1595 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1597 * fixed bug in compilation of functions as first class values
1598 (thanks to Antonio Martinez-Shotton)
1599 * The compiler's handling TYPE-ERRORs which it can prove will
1600 inevitably happen at runtime has been cleaned up and corrected
1601 in several ways. (thanks to Alexey Dejneka)
1602 * improved argument type checking for various basic arithmetic
1603 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1604 lavished on them in the past that they can be compiled in many
1605 ways in different special cases
1606 * fixed bug 181: compiler checks validity of user supplied type
1608 * cleaned up code flushing in optimization: Function calls which
1609 should signal errors for safety purposes (e.g. which ANSI says
1610 should signal errors when their arguments are of incorrect type)
1611 are no longer optimized away.
1612 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1613 * incremented fasl file version number, because changes in the
1614 implementation of sequence functions like COERCE caused
1615 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1616 in old inline expansions) to become undefined. (Actually these
1617 changes were later undone, so we might very well be binary
1618 compatible with 0.7.7 after all, but leaving the version number
1619 incremented seemed like the simplest and most conservative
1622 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1623 * An alpha-quality port to the parisc architecture running Linux,
1624 based on the old CMUCL backend, has been made. This, even more so
1625 than the other backends, should be considered still a work in
1626 progress; known problems include that the Linux kernel in 64-bit
1627 mode does not propagate the correct sigcontext structure to
1628 userspace, and consequently SBCL on a parisc64 kernel will not
1630 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1631 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1632 suppressed.) Also now that the compiler is looking at declarations
1633 in the environment, it checks optimization declarations as well,
1634 and suppresses inlining when (> DEBUG SPEED).
1635 * More fixes have been made to treatment of floating point exception
1636 treatment and other Unix signals. In particular, floating point
1637 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1638 * The detection and handling of control stack exhaustion (infinite
1639 or very deeply nested recursion) has changed. Stack exhaustion
1640 detection is now done by write-protecting pages at the OS level
1641 and applies at all optimization settings; when found, a
1642 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1643 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1644 be caught using IGNORE-ERRORS.
1645 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1646 correctly when transforming recursive LABELS functions to LETs.
1647 (thanks to Alexey Dejneka)
1648 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1649 that are names of constants or global variables.
1650 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1651 alien routines with docstrings.
1652 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1653 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1655 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1656 (thanks to Eric Marsden)
1657 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1658 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1659 * Bug fix: The SPARC backend can now compile functions involving
1660 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1661 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1662 to a functions expecting a PATHNAME-DESIGNATOR.
1663 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1664 lambda lists. (thanks to Alexey Dejneka)
1665 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1666 functions so that EXPORTing the name of the class doesn't cause
1667 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1668 to Antonio Martinez for reporting this)
1669 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1670 constant-folded without failing an assertion. (thanks to Einar
1671 Floystad Dorum for reporting this)
1672 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1673 types are now dealt with more correctly by the compiler.
1674 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1675 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1676 behaviour analogous to RENAME-FILE. This puts its behaviour more
1677 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1679 * The fasl file version number has changed again. (because of the
1680 bug fix involving the names of PCL MAKE-INSTANCE functions)
1682 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1683 * bug fix: Floating point exceptions are treated much more
1684 consistently on the x86/Linux and PPC/Linux platforms.
1685 * Array initialization with :INITIAL-ELEMENT is now much faster for
1686 cases when the compiler cannot open code the array creation, but
1687 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1688 array accesses have also seen a speed increase.
1689 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1690 specified. (This was at the root of some bad interactions between
1691 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1693 * bug fix: Internal error arguments for undefined functions are now
1694 computed correctly on the PPC/Linux platform.
1695 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1696 Raymond Toy's patch for CMU CL)
1697 * Support for the Solaris 9 operating environment has been included
1698 (thanks to Daniel Merritt)
1699 * A very ugly but hopefully complete draft of the missing FFI chapter
1700 of the manual has been created by reformatting the corresponding
1701 CMU CL manual chapter into (currently very ugly and incoherent)
1702 DocBook and bringing it up to date for SBCL behavior. Thus, the
1703 manual is now essentially complete, at least by my extreme
1704 once-and-only-once standards, whereby it's acceptable to refer to
1705 the doc strings of SB-EXT functions as the primary documentation.
1706 * The fasl file version number has changed again, due to cleanup of
1707 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1708 is no longer a static symbol.)
1710 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1711 * SBCL now builds with OpenMCL (version 0.12) as the
1712 cross-compilation host; also, more progress has been made toward
1713 bootstrapping under CLISP.
1714 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1716 * bug 158 fixed: The compiler can now deal with integer loop
1717 increments different from 1; fixing this turned out also to fix
1719 * bug 169 fixed: no more bogus warnings about using lexical bindings
1720 despite the presence of perfectly good SPECIAL declarations (thanks
1721 to David Lichteblau)
1722 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1723 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1724 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1726 * bug 180 fixed: Method combination specifications no longer ignore
1727 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1728 * bug fix: Structure type predicate functions now check their argument
1729 count as they should.
1730 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1731 correctly. (thanks to Pierre Mai)
1732 * minor incompatible change: The --noprogrammer option is deprecated
1733 in favor of the new --disable-debugger option, which is very similar.
1734 (The major difference is that it takes effect at a slightly different
1735 time at startup, causing handling of errors in --sysinit and
1736 --userinit files will be affected differently.) The
1737 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1738 been added to allow this functionality to be controlled from ordinary
1739 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1740 maintainers, who might want to run non-interactive scripts to
1741 build SBCL cores which will later be used interactively.)
1742 * minor incompatible change: The LOAD function no longer, when given
1743 a wild pathname to load, loads all files matching that pathname.
1744 Instead, an error of type FILE-ERROR is signalled.
1746 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1747 * bug 147 fixed: The compiler preserves its block link/count
1748 invariants more correctly now so that it doesn't crash. (thanks
1750 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1752 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1753 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1754 no-value-for-this-character as NIL (as specified by ANSI).
1755 * HOST-NAMESTRING on physical pathnames now returns a string that is
1756 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1757 (thanks to Christophe Rhodes)
1758 * The Alpha port handles icache flushing more correctly. (thanks to
1760 * More progress has been made toward bootstrapping under CLISP. (thanks
1761 to Christophe Rhodes)
1762 * The fasl file format has changed again, because dynamic loading
1763 on OpenBSD (which has non-ELF object files) motivated some cleanups
1764 in the way that foreign symbols are transformed and passed around.
1765 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1766 is no longer treated as whitespace by the reader, but instead as
1767 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1768 |A
\7fB|, instead of A as it used to.
1770 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1771 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1772 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1773 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1774 this as of 0.7.1.45, but was left out of the previous news section
1775 (thanks to Dan Barlow)
1776 * SBCL now runs on the Solaris operating system on SPARC architectures
1777 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1778 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1779 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1780 * SPARC backend cleanups, allowing builds of cores optimized for V8
1781 and V9 SPARCS, and also emission of code targeted to a particular
1782 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1784 * SBCL is closer to bootstrapping under CLISP, thanks to various
1785 fixes by Christophe Rhodes.
1786 * The fasl file format has changed again, to allow the compiler's
1787 INFO database to support symbol macros.
1788 * The user manual (in doc/) is formatted into HTML more nicely.
1789 (thanks to coreythomas)
1790 * The system is smarter about SUBTYPEP relationships, especially
1791 those involving NOT types (including types such as ATOM which are
1792 represented internally using NOT types). Thus SUBTYPEP is less
1793 likely to return (VALUES NIL NIL) in general, and in particular
1794 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1796 * The fasl file format has changed again, because the internal
1797 representation of types now includes a new slot to support the new
1798 SUBTYPEP-of-NOT-types logic.
1799 * (not a change in the main branch of SBCL, but a related prototype
1800 which can hopefully be merged into the main branch of SBCL in the
1801 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1802 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1803 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1804 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1805 dispatch macro character combinations. (thanks to Alexey Dejneka)
1806 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1807 that superficially look like logical namestrings correctly.
1808 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1810 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1811 default supplied-p) for &optional and &key arguments. (thanks to
1814 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1815 * incompatible change: The compiler is now less aggressive about
1816 tail call optimization, doing it only when (> SPACE DEBUG) or
1817 (> SPEED DEBUG). (This is an incompatible change because there are
1818 programs which relied on the old CMU-CL-style behavior to optimize
1819 away their unbounded recursion which will now die of stack overflow.)
1820 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1821 for non-GENCGC systems has been increased to 20M (since that
1822 seems much closer to the likely performance optimum for modern
1823 systems than the old 4M value was)
1824 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1825 and *DEBUG-PRINT-LEVEL*
1826 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1827 of CMU CL's support for SPARC, and various endianness and other
1828 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1829 * new syntactic sugar for the Unix command line: --load foo.bar is now
1830 an alternate notation for --eval '(load "foo.bar")'.
1832 ** The system now detects stack overflow and handles it gracefully,
1833 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1834 optimization settings. (This is a good thing in general, and
1835 its introduction in this version should be particularly timely
1836 for anyone whose code fails because of suppression of tail
1838 ** The system now hunts for the C variable "environ" in a more
1839 devious way, to avoid segfaults when the C library version differs
1840 between compile time and run time. (thanks to Christophe Rhodes)
1841 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1842 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1843 ** The compiler no longer issues bogus style warnings for undefined
1844 classes in the same source file as the DEFCLASSes which defined
1845 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1847 ** fixes in CONDITION class precedence list for undefined function
1848 errors (thanks to Alexei Dejneka)
1849 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1850 correctly. (thanks to Dan Barlow)
1851 ** portability fixes aiming at bootstrapping under CLISP (thanks
1852 to Dave McDonald and Christophe Rhodes)
1853 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1854 ** fixes in type translation and and type inference (thanks to
1856 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1857 ** various fixes in the new ports (thanks to Dan Barlow)
1858 * several changes related to debugging:
1859 ** suppression of tail recursion, as noted above
1860 ** stack overflow detection, as noted above
1861 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1862 is now the default. (For some time encapsulation has been more
1863 reliable than the breakpoint-based :ENCAPSULATE NIL
1864 implementation, at least on X86 systems; and I just noticed that
1865 encapsulation also seems closer to the spirit of the ANSI
1868 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1870 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1871 up properly again. (There was a packaging bug in 0.7.0 which
1872 left their definitions in SB-SYS::LOAD-FOREIGN and
1873 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1874 vital for most things which interface to C-level interfaces,
1875 like extensions working with sockets or databases or
1876 Perl-compatible regexes or whatever, and the need to fix
1877 this bug is the main reason that 0.7.1 was released so
1879 ** DEFGENERIC is now choosier about the methods it redefines, so that
1880 reLOADing a previously-LOADed file containing DEFGENERICs does
1881 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1882 cycle now works as it should. (thanks to Alexey Dejneka)
1883 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1884 fixed by Christophe Rhodes. (He actually submitted this patch
1885 months ago, and I delayed until after 0.7.0.)
1886 ** Bug 111 (internal compiler confusion about runtime checks on
1887 FUNCTION types) was fixed by Alexey Dejneka.
1888 * Some internal cleanups (getting rid of variables which aren't
1889 needed now that the byte interpreter is gone) caused the fasl
1890 file format number to change again.
1892 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1893 * major incompatible change: The default fasl file extension, i.e. the
1894 default extension for files produced by COMPILE-FILE, has changed
1895 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1897 ** There are many changes in the implementation of the compiler.
1898 SBCL is now essentially a compiler-only implementation of ANSI
1899 Common Lisp. EVAL still "interprets" a few special cases, but
1900 almost all the interesting cases are handled by creating
1901 a LAMBDA expression, calling COMPILE on it, then calling
1902 FUNCALL on the result.
1903 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1904 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1905 Since the code is newer, there might still be some new bugs
1906 (though not as many as before Martin Atzmueller's fixes:-). But
1907 the new code is substantially simpler and clearer, and hopefully
1908 any remaining bugs will be simpler, less fundamental, and more
1909 fixable then the bugs in the old code.
1910 ** The revised compiler is still a little unsteady on its feet.
1912 *** The debugging information it produces (particularly the names
1913 of FUNCTION objects) is sometimes much less useful than what
1914 the old compiler produced.
1915 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1916 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1917 within a MACROLET) has been temporarily weakened.
1918 ** There are new compiler optimizations for various functions:
1919 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1920 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1921 *** the math functions TRUNCATE, FLOOR, and CEILING
1922 *** the function-of-all-trades COERCE
1923 Mostly these should be transparent, but there's one
1924 potentially-annoying problem (bug 117): when the compiler
1925 inline-expands a function and does type analysis on the result,
1926 it can create control paths which have type mismatches, and
1927 when it can't prove that those control paths aren't taken,
1928 it will issue WARNINGs about the type mismatches. This is
1929 a particular problem in practice for the new sequence functions.
1930 It's not clear how this should be fixed, and for now, a
1931 workaround is given in the entry for 117 in the BUGS file.
1932 ** (Because of the interaction between the two previous items --
1933 occasional inlining problems and new inline expansions -- some
1934 of the new sequence function optimizations won't really kick in
1935 completely until debugging information, and then inlining, are
1936 straightened out in some future version.)
1937 * minor incompatible changes:
1938 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1939 DIRECTORY no longer implicitly promotes NIL slots of its
1940 pathname argument to :WILD. In particular, when you ask for the
1941 contents of a directory (which you used to be able to do without
1942 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1943 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1944 ** changes in behavior that ANSI explicitly defines to be
1945 implementation dependent:
1946 *** The new compiler-only implementation still conforms with ANSI,
1947 but acts a little different than before. Besides the obvious
1948 changes in performance tradeoffs (that the cost per form passed
1949 to EVAL has gone up, and the cost per form executed by EVAL
1950 has gone down), the behavior of the system changes a little
1951 because there are no longer any interpreted function objects.
1952 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
1953 e.g. doing COMPILE on the output of interactive DEFUN is
1955 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
1957 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
1958 has changed from (:CL) to NIL.
1959 *** The CHAR-NAME of unprintable ASCII characters which, unlike
1960 e.g. #\Newline and #\Tab, don't have names specified in the
1961 ANSI Common Lisp standard, is now based on their ASCII symbolic
1962 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
1963 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
1964 are no longer used for output.
1965 ** changes in internal implementation constants:
1966 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
1967 4 million. (If your application spends a lot of time GCing and
1968 you have a lot of RAM, you might want to experiment with
1969 increasing it even more.)
1970 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
1971 However, almost all old code should still continue to work without
1972 immediate update, as SB-C-CALL is now a (deprecated) nickname
1974 ** Old operator names in the style DEF-FOO are now deprecated in
1975 favor of new corresponding names DEFINE-FOO, for consistency with
1976 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
1977 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
1978 internal symbols, but a few supported extensions like
1979 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
1980 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
1981 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
1982 etc. as you get deeper into recursive calls to the debugger
1983 command loop, instead of the old "5]", "5]]", "5]]]"
1984 sequence. (I was motivated to do this when squabbles between
1985 ILISP and SBCL left me very deeply nested in the debugger. In the
1986 short term, this change will probably provoke more ILISP/SBCL
1987 squabbles, but hopefully it will be an improvement in the long run.)
1988 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
1989 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
1990 function, since declaiming return types involving aliens is
1991 (1) annoyingly messy to do by hand and (2) vital to efficient
1992 compilation of code which calls such functions.
1993 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
1994 longer reexported by the SB-EXT package. They're solely useful
1995 for alien code, so it seems more logical that you should get
1996 them from the SB-ALIEN package, not in SB-EXT.
1997 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
1998 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
1999 features. Instead, the code that they used to control is always
2000 built into the system.
2001 * many other bug fixes
2002 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2003 advantage of the new EVAL-WHEN stuff and to clean them up in
2004 general, and they are now more ANSI-compliant in a number of
2005 ways. Martin Atzmueller is responsible for a lot of this.
2006 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2008 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2009 *** correct ERROR type for various file operations
2010 *** some fixes for Lisp streams
2011 *** DEFMETHOD syntax checking
2012 *** changing old weird representation of debug information as
2013 strings (which, among their other deficiencies, don't transform
2014 correctly when you rename packages, and don't change their
2015 print representation when you change things like *PACKAGE*
2016 and *PRINT-LENGTH*) to symbols and lists of symbols
2017 He also made several improvements and fixed several bugs in DESCRIBE.
2018 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2020 *** misbehavior of WRITE-STRING/WRITE-LINE
2021 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2022 and several other LOOP problems as well
2023 *** DIRECTORY when similar filenames are present
2024 *** DEFGENERIC with :METHOD options
2025 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2026 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2027 *** argument ordering in FIND with :TEST option
2028 *** mishandled package designator argument in APROPOS-LIST
2029 *** various problems in the backquote readmacro
2030 *** a bug in APROPOS
2031 *** probably some others that I'm not describing very well here,
2032 since the CVS log documents them by reference to sbcl-devel
2033 messages, and the SourceForge archives aren't working well.:-(
2034 ** Dan Barlow improved the Alpha port (and is making progress on the
2035 PPC port, for those of you who think different).
2036 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2037 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2038 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2039 continues to work on the SPARC port (for those of you in a position
2040 to look down upon our little PC-compatible boxes from a great height).
2041 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2042 and uses that copy, rather than the current dynamic value, when
2043 it's trying to decide whether to truncate output. Thus e.g.
2044 (let ((*print-lines* 50))
2045 (pprint-logical-block (stream nil)
2047 (let ((*print-lines* 8))
2048 (print (aref possiblybigthings i) stream)))))
2049 should now truncate the logical block only at 50 lines, instead of
2050 often truncating it at 8 lines, as it did before.
2051 * The doc/cmucl/ directory, containing old CMU CL documentation
2052 from the time of the fork, is no longer part of the base system.
2053 SourceForge has shut down its anonymous FTP service, and with it
2054 my original plan for distributing the old CMU CL documentation
2055 there. For now, if you need these files you can download an old
2056 SBCL source release and extract them from it.
2057 * The fasl file version number changed again, for dozens of reasons,
2058 some of which are apparent above.
2060 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2061 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2062 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2063 patch, so that DISASSEMBLE output is much nicer.
2064 * The code in the SB-PROFILE package now seems reasonably stable.
2065 I still haven't decided what the final interface should look like
2066 (I'd like PROFILE to interact cleanly with TRACE, since both
2067 facilities use function encapsulation) but if you have a need
2068 for profiling now, you can probably use it successfully with
2069 the current CMU-CL-style interface.
2070 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2071 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2072 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2073 link now returns the dangling link itself, and for similar
2074 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2075 link itself. (In these cases the old code signalled an error and
2076 looped endlessly, respectively.) Thus, DIRECTORY now works even
2077 in the presence of dangling and cyclic symbolic links.
2078 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2079 is now a supported extension again, since the consensus on
2080 sbcl-devel was that it can be useful for ordinary development
2081 work, not just for debugging SBCL itself.
2082 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2083 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2084 that currently-defined functions might be redefined later with
2085 different return types.
2086 * Hash tables can be printed readably, as inspired by CMU CL code
2087 of Eric Marsden and SBCL code of Martin Atzmueller.
2088 * better error handling in CLOS method combination, thanks to
2089 Martin Atzmueller porting Pierre Mai's CMU CL patches
2090 * more overflow fixes for >16Mbyte I/O buffers
2091 * A bug in READ has been fixed, so that now a single Ctrl-D
2092 character suffices to cause end-of-file on character streams.
2093 In particular, now you only need one Ctrl-D at the command
2094 line (not two) to exit SBCL.
2095 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2097 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2098 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2099 does the right thing.
2100 * The implementation of some type tests, especially for CONDITION
2101 types, is now tidier and maybe faster, due to CMU CL code
2102 originally by Douglas Crosher, ported by Martin Atzmueller.
2103 * Some math functions have been fixed, and there are new
2104 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2105 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2106 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2107 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2108 likely to be built into sbcl-0.7.0.)
2109 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2110 CL, ported to SBCL by Martin Atzmueller)
2111 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2112 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2113 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2114 * There's a new slam.sh hack to shorten the edit/compile/debug
2115 cycle for low-level changes to SBCL itself, and a new
2116 :SB-AFTER-XC-CORE target feature to control the generation of
2117 the after-xc.core file needed by slam.sh.
2118 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2119 COMPILE-FILE is no longer supported, so that now every function
2120 gets an entry point, so that block compilation looks a little
2121 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2122 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2123 returns the number of bytes consed since the system started,
2124 rather than the number consed since the first time the function
2125 was called. (The new definition parallels ANSI functions like
2126 CL:GET-INTERNAL-RUN-TIME.)
2127 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2128 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2129 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2130 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2131 * Fasl file version numbers are now independent of the target CPU,
2132 since historically most system changes which required version
2133 number changes have affected all CPUs equally. Similarly,
2134 the byte fasl file version is now equal to the ordinary
2137 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2138 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2139 is no longer recognized. I apologize for this, because it was
2140 listed in SB-EXT as a supported extension, but I found that
2141 its existing behavior was poorly specified, as well as incorrectly
2142 specified, and it looked like too much of a mess to straighten it
2143 out. I have enough on my hands trying to get ANSI stuff to work..
2144 * many patches ported from CMU CL by Martin Atzmueller, with
2145 half a dozen bug fixes in pretty-printing and the debugger, and
2146 half a dozen others elsewhere
2147 * fixed bug 13: Floating point infinities are now supported again.
2148 They might still be a little bit flaky, but thanks to bug reports
2149 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2150 as flaky as they were.
2151 * The --noprogrammer command line option is now supported. (Its
2152 behavior is slightly different in detail from what the old man
2153 page claimed it would do, but it's still appropriate under the
2154 same circumstances that the man page talks about.)
2155 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2156 are now supported, and enabled by default. Thus, the compiler can
2157 handle many floating point and complex operations much less
2158 inefficiently. (Thus e.g. you can implement a complex FFT
2160 * The compiler now detects type mismatches between DECLAIM FTYPE
2161 and DEFUN better, and implements CHECK-TYPE more correctly, and
2162 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2163 thanks to patches from Martin Atzmueller.
2164 * various fixes to make the cross-compiler more portable to
2165 ANSI-conforming-but-different cross-compilation hosts (notably
2166 Lispworks for Windows, following bug reports from Arthur Lemmens)
2167 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2168 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2169 fixed thanks to Pierre Mai's CMU CL patches.
2170 * fixes to keep the system from overflowing internal counters when
2171 it tries to use i/o buffers larger than 16M bytes
2172 * fixed bug 45a: Various internal functions required to support
2173 complex special functions have been merged from CMU CL sources.
2174 (When I was first setting up SBCL, I misunderstood a compile-time
2175 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2176 * improved support for type intersection and union, fixing bug 12
2177 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2178 more obscure bugs as well
2179 * some steps toward byte-compiling non-performance-critical
2180 parts of the system, courtesy of patches from Martin Atzmueller
2181 * Christophe Rhodes has made some debian packages of sbcl at
2182 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2183 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2184 stable, but are nonetheless usable. When he's ready, I'd be happy
2185 to add them to the SourceForge "File Releases" section. (And if
2186 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2187 * new fasl file format version number (because of changes in
2188 internal representation of (OR ..) types to accommodate the new
2189 support for (AND ..) types, among other things)
2191 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2192 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2194 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2196 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2197 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2198 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2199 * DESCRIBE now works on structure objects again.
2200 * Most function call argument type mismatches are now handled as
2201 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2202 know whether the function will be redefined before the call is
2203 executed. (The compiler could flag local calls with full WARNINGs,
2204 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2205 it doesn't keep track of enough information to know whether calls
2206 are local in this sense.)
2207 * Compiler output is now more verbose, with messages truncated
2208 later than before. (There should be some supported way for users
2209 to override the default verbosity, but I haven't decided how to
2210 provide it yet, so this behavior is still controlled by the internal
2211 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2212 src/compiler/ir1util.lisp.)
2213 * Fasl file format version numbers have increased again, because
2214 support for the Gray streams extension changes the layout of the
2215 system's STREAM objects.
2216 * The Gray subclassable streams extension now works, thanks to a
2217 patch from Martin Atzmueller.
2218 * The full LOAD-FOREIGN extension (not just the primitive
2219 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2220 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2221 but like most other programs, it defaults to copying the Unix
2222 environment from the original process instead of starting the
2223 new process in an empty environment.
2224 * Extensions which manipulate the Unix environment now support
2225 an :ENVIRONMENT keyword option which doesn't smash case or
2226 do other bad things. The CMU-CL-style :ENV option is retained
2227 for porting convenience.
2228 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2229 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2231 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2233 * A patch from Martin Atzmueller seems to have solved the SIGINT
2234 problem, and as far as we know, signal-handling now works cleanly.
2235 (If you find any new bugs, please report them!)
2236 * The system no longer defaults Lisp source file names to types
2237 ".l", ".cl", or ".lsp", but only to ".lisp".
2238 * The compiler no longer uses special default file extensions for
2239 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2240 seems to expect a single default extension for all compiled code,
2241 and there's no compelling reason to try to stretch the standard
2242 to allow two different extensions.) Instead, byte-compiled files
2243 default to the same extension as native-compiled files.
2244 * Fasl file format version numbers have increased again, because
2245 a rearrangement of internal implementation packages made some
2246 dumped symbols in old fasl files unreadable in new cores.
2247 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2248 many fewer weird special cases.
2249 * Bug #17 (differing COMPILE-FILE behavior between logical and
2250 physical pathnames) has been fixed, and some related misbehavior too,
2251 thanks to a patch from Martin Atzmueller.
2252 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2253 by Tim Moore, ported to SBCL by Martin Atzmueller.
2254 * Martin Atzmueller fixed several filesystem-related problems,
2255 including bug #36, in part by porting CMU CL patches, which were
2256 written in part by Paul Werkowski.
2257 * More compiler warnings in src/runtime/ are gone, thanks to
2258 more patches from Martin Atzmueller.
2259 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2262 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2264 * DESCRIBE now works on CONDITION objects.
2265 * The debugger now handles errors which arise when trying to print
2266 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2268 * The build system now uses an additional file, customize-target-features.lisp,
2269 to allow local modifications to the target *FEATURES* list. (The point of
2270 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2271 debugging features enabled, without having to worry about propagating it
2272 into everyone's system when I do a "cvs update".) When no
2273 customize-target-features.lisp file exists, the target *FEATURES* list
2274 should be constructed the same way as before.
2275 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2276 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2277 warn about behavior which is undefined under the ANSI spec. Note: This
2278 is specified by ANSI, but it's not very popular with programmers.
2279 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2280 macro in the SBCL sources for an example of a workaround which you
2281 might use to make portable ANSI-standard code which does what you want.
2282 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2283 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2284 when it's used as a non-toplevel form. (This is required in order
2285 to implement the DEFCONSTANT-EQX macro.)
2286 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2287 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2288 funny things, due to bugs in the implementation of EVAL-WHEN
2289 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2290 non-toplevel DEFCONSTANTs are uncommon.)
2291 * The core file version number and fasl file version number have been
2292 incremented, because the old noncompliant DEFCONSTANT behavior involved
2293 calling functions which no longer exist, and because I also took the
2294 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2295 * fixed bug 1 (error handling before read-eval-print loop starts), and
2296 redid debugger restarts and related debugger commands somewhat while
2298 ** The QUIT debugger command is gone, since it did something
2299 rather different than the SB-EXT:QUIT command, and since it never
2300 worked properly outside the main toplevel read/eval/print loop.
2301 Invoking the new TOPLEVEL restart provides the same functionality.
2302 ** The GO debugger command is also gone, since you can just invoke
2303 the CONTINUE restart directly instead.
2304 ** The TOP debugger command is also gone, since it's redundant with the
2305 FRAME 0 command, and since it interfered with abbreviations for the
2307 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2309 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2310 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2311 some porting work by Martin Atzmueller)
2312 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2313 with a boatload of patches which he ported to SBCL. Now that those
2315 ** The system tries to make sure that its low-priority messages
2316 are prefixed by semicolons, to help people who like to use
2317 syntax highlighting in their ILISP buffer. (This patch
2318 was originally due to Raymond Toy.)
2319 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2320 patches originally written by Raymond Toy.
2321 ** The compiler understands coercion between single-value and
2322 multiple-VALUES type expressions better, getting rid of some very
2323 weird behavior, thanks to patches originally by Robert MacLachlan
2324 and Douglas Crosher.
2325 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2326 lambda lists, thanks to a patch originally by Pierre Mai.
2327 ** The system no longer bogusly warns about "abbreviated type
2329 ** The compiler gets less confused by inlining and RETURN-FROM,
2330 thanks to some patches originally by Tim Moore.
2331 ** The system no longer hangs when dumping circular lists to fasl
2332 files, thanks to a patch originally from Douglas Crosher.
2333 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2334 undefined function error.
2335 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2336 in structure slot initforms) for now, documented workaround instead:-|
2337 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2338 * fixed bug 5: added stubs for various Gray stream functions called
2339 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2340 installed, at least appropriate type errors are generated
2341 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2342 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2343 consistently in DEFMETHOD forms.
2344 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2345 it doesn't seem to affect SBCL after all
2346 * The C runtime system now builds with better optimization and many
2347 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2349 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2351 * The system is now under CVS at SourceForge (instead of the
2352 CVS repository on my home machine).
2353 * The new signal handling code has been tweaked to treat register
2354 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2355 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2356 downstream, e.g. in debug-int.lisp, has implicit dependencies
2357 on the unsignedness of integer representation of machine words,
2358 and that caused the system to bomb out with infinite regress
2359 when trying to recover from type errors involving signed values,
2360 e.g. (BUTLAST '(1 2 3) -1).)
2361 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2362 (This was one of the bugs Peter Van Eynde reported back in July.)
2363 * The system now uses code inspired by Colin Walters' O(N)
2364 implementation of MAP (from the cmucl-imp@cons.org mailing
2365 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2366 inline the MAP operation, and there is more than one
2367 sequence argument to the MAP call (so that it can't just
2368 do ETYPECASE once and for all based on the type of the
2369 single sequence argument). (The old non-inline implementation
2370 of the general M-argument sequence-of-length-N case required
2371 O(M*N*N) time when any of the sequence arguments were LISTs.)
2372 * The QUIT :UNIX-CODE keyword argument has been renamed to
2373 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2374 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2376 * Raymond Wiker's patches to port dynamic loading from Linux to
2377 FreeBSD have been added.
2378 * The BUGS file is now more nearly up to date, thanks in large part
2379 to Martin Atzmueller's review of it.
2380 * The debugger now flushes standard output streams before it begins
2381 its output ("debugger invoked" and so forth).
2382 * The core version number and fasl file version number have both
2383 been incremented, because of incompatible changes in the layout
2385 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2386 used to not be called for a saved Lisp image.)
2387 * Martin Atzmueller's version of a patch to fix a compiler crash,
2388 as posted on sbcl-devel 13 September 2000, has been installed.
2389 * Instead of installing Martin Atzmueller's patch for the
2390 compiler transform for SUBSEQ, I deleted the compiler transform,
2391 and transforms for some similar consing operations.
2392 * A bug in signal handling which kept TRACE from working on OpenBSD
2394 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2395 away by constant folding
2396 * The system now defines its address space constants in one place
2397 (in the Lisp sources), and propagates them automatically elsewhere
2398 (through GENESIS and the sbcl.h file). Therefore, patching the
2399 address map is less unnecessarily tedious and error-prone. The
2400 Lisp names of address space constants have also been systematized.
2401 * CVS tags like dollar-Header-dollar have been removed from
2402 the sources, because they have never saved me trouble and
2403 they've been source of trouble working with patches and other
2404 diff-related operations.
2405 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2406 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2408 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2410 * The system has been ported to OpenBSD.
2411 * The system now compiles with a simple "sh make.sh" on the systems
2412 that it's supported on. I.e., now you no longer need to tweak
2413 text in the target-features.lisp-expr and symlinks in src/runtime/
2414 by hand, the make.sh takes care of it for you.
2415 * The system is no longer so grossly inefficient when compiling code
2416 involving vectors implemented as general (not simple) vectors (VECTOR T),
2417 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2418 which dares to use the various sequence functions on non-simple
2419 vectors, takes less of a performance hit.
2420 * There is now a primitive type predicate VECTOR-T-P
2421 to test for the (VECTOR T) type, so that e.g.
2422 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2423 can now be compiled with some semblance of efficiency. (The old code
2424 turned the type declaration into a full call to %TYPEP at runtime!)
2425 * AREF on (VECTOR T) is still not fast, since it's still compiled
2426 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2427 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2428 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2429 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2430 without making full calls to SUBTYPEP at runtime.
2431 (Some analogous efficiency issues for non-simple vectors specialized to
2432 element types other than T, or for non-simple multidimensional arrays,
2433 have not been addressed. They could almost certainly be handled the
2434 same way if anyone is motivated to do so.)
2435 * The changes in array handling break binary compatibility, so
2436 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2437 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2438 instead of (VALUES T T).
2439 * By following the instructions that Dan Barlow posted to sbcl-devel
2440 on 2 July 2000, I was able to enable primitive dynamic object
2441 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2442 functionality is not implemented (since it calls ld to resolve
2443 library references automatically, requiring RUN-PROGRAM for its
2444 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2445 try to resolve library references) is now supported.
2446 * The system now flushes the standard output streams when it terminates,
2447 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2448 them at several other probably-convenient times, e.g. in each pass of
2449 the toplevel read-eval-print loop, and after evaluating a form given
2450 as an "--eval" command-line option. (These changes were motivated by a
2451 discussion of stream flushing issues on cmucl-imp in August 2000.)
2452 * The source transform for TYPEP of array types no longer assumes
2453 that an array whose element type is a not-yet-defined type
2454 is implemented as an array of T, but instead punts, so that the
2455 type will be interpreted at runtime.
2456 * There is now some support for cross-compiling in make.sh: each of
2457 the phases of make.sh has its own script. (This should be transparent
2458 to people doing ordinary, non-cross-compile builds.)
2459 * Since my laptop doesn't have hundreds of megabytes of memory like
2460 my desktop machine, I became more motivated to do some items on
2461 my to-do list in order to reduce the size of the system a little:
2462 ** Arrange for various needed-only-at-cold-init things to be
2463 uninterned after cold init. To support this, those things have
2464 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2465 symbols with such names are now uninterned after cold init).
2466 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2467 fasl files for cold load.
2468 ** Remove the old compiler structure pooling code (which used to
2469 be conditional on the target feature :SB-ALLOC) completely.
2470 ** Redo the representation of some data in cold init to be more compact.
2471 (I also looked into supporting byte compiled code at bootstrap time,
2472 which would probably reduce the size of the system a lot, but that
2473 looked too complicated, so I punted for now.)
2474 * The maximum signal nesting depth in the src/runtime/ support code has
2475 been reduced from 4096 to 256. (I don't know any reason for the very
2476 large old value. If the new smaller value turns out to break something,
2477 I'll probably just bump it back up.)
2478 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2480 * Many, many bugs reported by Peter Van Eynde have been added to
2481 the BUGS list; some have even been fixed.
2482 * While enabling dynamic object file loading, I tried to make the
2483 code easier to understand, renaming various functions and variables
2484 with less ambiguous names, and changing some function calling
2485 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2486 * While trying to figure out how to do the OpenBSD port, I tried to
2487 clean up some of the code in src/runtime/. In particular, I dropped
2488 support for non-POSIX signal handling, added various comments,
2489 tweaked the code to reduce the number of compilation warnings, and
2490 renamed some files to increase consistency.
2491 * To support the new automatic configuration functionality in make.sh,
2492 the source file target-features.lisp-expr has been replaced with the
2493 source file base-target-features.lisp-expr and the machine-generated
2494 file local-target-features.lisp-expr.
2495 * fixed a stupid quoting error in make.sh so that using CMU CL
2496 "lisp -batch" as cross-compilation host works again
2498 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2500 * DESCRIBE no longer tries to call itself recursively to describe
2501 bound/fbound values, so that it no longer fails on symbols which are
2502 bound to themselves (like keywords, T, and NIL).
2503 * DESCRIBE now works on generic functions.
2504 * The printer now prints less-screwed-up representations of closures
2505 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2506 * A private symbol is used instead of the :EMPTY keyword previously
2507 used to mark empty slots in hash tables. Thus
2508 (DEFVAR *HT* (MAKE-HASH-TABLE))
2509 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2510 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2511 now does what ANSI says that it should. (You can still get
2512 similar noncompliant behavior if bang on the hash table
2513 implementation with all the symbols you get back from
2514 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2515 This breaks binary compatibility, since tests for equality to
2516 :EMPTY are wired into things like the macroexpansion of
2517 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2519 * There's now a minimal placeholder implementation for CL:STEP,
2520 as required by ANSI.
2521 * An obscure bug in the interaction of the normal compiler, the byte
2522 compiler, inlining, and structure predicates has been patched
2523 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2524 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2526 * Missing ordinary arguments in a macro call are now detected even
2527 when the macro lambda list contains &KEY or &REST.
2528 * The debugger no longer complains about encountering the top of the
2529 stack when you type "FRAME 0" to explicitly instruct it to go to
2530 the top of the stack. And it now prints the frame you request even
2531 if it's the current frame (instead of saying "You are here.").
2532 * As specified by ANSI, the system now always prints keywords
2533 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2535 * The default initial SIZE of HASH-TABLEs is now smaller.
2536 * Type information from CLOS class dispatch is now propagated
2537 into DEFMETHOD bodies, so that e.g.
2538 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2540 is now basically equivalent to
2541 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2542 (DECLARE (TYPE SINGLE-FLOAT X))
2544 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2545 operation, without having to do run-time type dispatch.
2546 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2547 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2548 * Since I don't seem to be making big file reorganizations very often
2549 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2550 is overflowing my ability to conveniently back them up), I've finally
2551 checked the system into CVS. (The CVS repository is on my home system,
2552 not at SourceForge -- putting it on SourceForge might come later.)
2553 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2554 high-level GC-NOTIFY-FOO functions send their output. (There's
2555 still very little control of where low-level verbose GC functions
2556 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2557 less than it used to -- the GC-NOTIFY-FOO functions are now under
2558 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2559 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2560 in only one place in the source code, and propagates it automatically
2561 everywhere that it's needed. Thus e.g. when I bump the version from
2562 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2563 * The C source files now include boilerplate legalese and documentation
2564 at the head of each file (just as the Lisp source files already did).
2565 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2566 to his page will be replaced with a link to his new CLiki service.
2568 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2570 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2571 * The build process now looks for GNU make under the default name "gmake",
2572 instead of "make" as it used to. If GNU make is not available as "gmake"
2573 on your system, you can change this default behavior by setting the
2574 GNUMAKE environment variable.
2575 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2576 can build without error under CMU CL.
2578 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2580 * There is now a partial SBCL user manual (with some new text and some
2581 text cribbed from the CMU CL manual).
2582 * The beginnings of a profiler have been added (starting with the
2583 CMU CL profiler and simplifying and cleaning up). Eventually the
2584 main interface should be through the TRACE macro, but for now,
2585 it's still accessed through vaguely CMU-CL-style functions and macros
2586 exported from the package SB-PROFILE.
2587 * Some problems left over from porting CMU CL to the new
2588 cross-compilation bootstrap process have been cleaned up:
2589 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2590 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2591 part when getting rid of the compiler *BACKEND* stuff.)
2592 ** The value of *NULL-TYPE* was screwed up, because it was
2593 being initialized before the type system knew the final
2594 definition of the 'NULL type. This screwed up several key
2595 optimizations in the compiler, causing inefficiency in all sorts
2596 of places. (I found it because I wanted to understand why
2597 GET-INTERNAL-RUN-TIME was consing.)
2598 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2599 PROCLAIM FTYPE information. Unfortunately this broke binary
2600 compatibility again, since now the forms output by DEFGENERIC
2601 to refer to functions which didn't exist in 0.6.3.
2602 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2603 can use the new (as of 0.6.3) transform for SOME into MAP into
2605 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2606 values to (INTEGER 0 1000000), so that the time code will no longer
2607 occasionally get blown up by Linux returning 1000000 microseconds
2608 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2609 its output conform to the ANSI spec. (Alas, this makes its output
2610 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2611 * A full call to MAP NIL with a single sequence argument no longer conses.
2612 * fixes to problems pointed out by Martin Atzmueller:
2613 * The manual page no longer talks about multiprocessing as though
2614 it were currently supported.
2615 * The ILISP support patches have been removed from the distribution,
2616 because as of version 5.10.1, ILISP now supports SBCL without us
2617 having to maintain patches.
2618 * added a modified version of Raymond Toy's recent CMU CL patch for
2619 EQUALP comparison of HASH-TABLE
2621 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2623 * The system still can't cross-compile itself with
2624 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2625 entails), but at least it can compile more of itself that way
2626 than it used to be able to, and various buglets which were uncovered
2627 by trying to cross-compile itself that way have now been fixed.
2628 * This release breaks binary compatibility again. This time
2629 at least I've incremented the FASL file format version to 2, so that the
2630 problem can be detected reliably instead of just causing weird errors.
2631 * various new style warnings:
2632 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2633 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2634 ** using the lexical binding of a variable named in the *FOO* style
2635 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2636 as specified by ANSI.
2637 * *RANDOM-STATE* is no longer automatically initialized from
2638 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2639 default behavior of the system is to repeat its behavior every time
2640 it's run. If you'd like to change this behavior, you can always
2641 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2642 old convention there was no comparably easy way to get the system to
2643 repeat its behavior every time it was run.
2644 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2645 FTYPE declarations has been removed, in favor of their ANSI
2646 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2647 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2648 the types of their sequence arguments can be determined at compile time.
2649 This is done through a new open code expansion for MAP which eliminates
2650 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2651 argument types can be determined at compile time.
2652 * The optimizer now transforms COERCE into an identity operation when it
2653 can prove that the coerced object is already of the correct type. (This
2654 can be a win for machine generated code, including the output of other
2655 optimization transforms, such as the MAP transform above.)
2656 * Credit information has been moved from source file headers into CREDITS.
2657 * Source file headers have been made more standard.
2658 * The CASE macro now compiles without complaining even when it has
2661 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2663 * (Note that the way that the PCL macroexpansions were rewritten
2664 to accommodate the change in DEFGENERIC below breaks binary
2665 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2666 not run under sbcl-0.6.2. Once we get out of alpha releases,
2667 i.e. hit release 1.0.0, we'll probably try to maintain binary
2668 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2669 and sbcl-1.4.4. Until then, however, it might be fairly common
2670 for maintenance releases to break binary compatibility.)
2671 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2673 * The reporting of unhandled signals has been changed to print some
2674 explanatory text as well as the report form. (Previously only
2675 the report form was printed.)
2676 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2677 it defines, so that the compiler no longer issues undefined function
2678 warnings for compiled-but-not-yet-loaded generic functions.
2679 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2680 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2681 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2682 section of the ANSI spec are supported.
2683 * The "" nickname for the "KEYWORD" package has been removed.
2684 The reader still handles symbol tokens which begin with a package marker
2685 as keywords, but it doesn't expose its mechanism for doing so in the
2686 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2687 * The system now issues STYLE-WARNINGs for contradictory TYPE
2688 proclamations. (Warnings for contradictory FTYPE proclamations would
2689 be nice too, but those can't be done usefully unless the type system
2690 is made smarter about FUNCTION types.)
2691 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2692 systematized, so that "*target-*.lisp is supposed to exist only on the
2693 target and imply that there's a related file which exists on the
2694 host, and *host-*.lisp is supposed to exist only on the host and imply
2695 that there's a related file which exists on the target. This involves a
2696 lot of renaming. Hopefully the acute confusion caused by the renaming
2697 will be justified by the reduction in chronic confusion..
2698 ** runtime-type.lisp -> early-target-type.lisp
2699 ** target-type.lisp -> late-target-type.lisp
2700 ** early-host-format.lisp -> early-format.lisp
2701 ** late-host-format.lisp -> late-format.lisp
2702 ** host-error.lisp -> misc-error.lisp
2703 ** early-error.lisp -> early-target-error.lisp
2704 ** late-error.lisp -> late-target-error.lisp
2705 ** host-defboot.lisp -> early-defboot.lisp
2706 ** code/misc.lisp -> code/target-misc.lisp
2707 ** code/host-misc.lisp -> code/misc.lisp
2708 ** code/numbers.lisp -> code/target-numbers.lisp
2709 ** code/early-numbers.lisp -> numbers.lisp
2710 ** early-host-type.lisp -> early-type.lisp
2711 ** late-host-type.lisp -> late-type.lisp
2712 ** host-typep.lisp -> typep.lisp
2713 ** load.lisp -> target-load.lisp
2714 ** host-load.lisp -> load.lisp
2715 ** host-disassem.lisp -> disassem.lisp
2716 ** host-insts.lisp -> insts.lisp
2717 ** byte-comp.lisp -> target-byte-comp.lisp
2718 ** host-byte-comp.lisp -> byte-comp.lisp
2719 ** host-signal.lisp -> signal.lisp
2720 ** host-defstruct.lisp -> defstruct.lisp
2721 ** late-target-type.lisp -> deftypes-for-target.lisp
2722 Furthermore, several other previously target-only files foo.lisp (e.g.
2723 hash-table.lisp and random.lisp) have been split into a target-and-host
2724 foo.lisp file and a target-only target-foo.lisp file, with their key type
2725 definitions in the target-and-host part, so that the cross-compiler will
2726 know more about target types.
2727 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2728 gone away. In their place are various *BACKEND-FOO* variables
2729 corresponding to the slots of the old structure.
2730 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2731 into the target SBCL has been fixed.
2732 * The chill.lisp system for loading cold code into a running SBCL
2734 * Support for the CMU CL "scavenger hook" extension has been removed.
2735 (It was undocumented and unused in the CMU CL sources that SBCL was
2736 derived from, and stale in sbcl-0.6.1.)
2737 * Various errors in the cross-compiler type system were detected
2738 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2739 (enabling various consistency checks). Many of them were fixed,
2740 but some hard problems remain, so the compiler is back to
2741 running without *TYPE-SYSTEM-INITIALIZED* for now.
2742 * As part of the cross-compiler type system cleanup, I implemented
2743 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2744 * I have started adding UNCROSS calls throughout the type system
2745 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2746 on cross-compiler input files will be able to go away, and various
2748 * CONSTANTP now returns true for quoted forms (as explicitly required
2751 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2753 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2754 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2755 (MAKE-LIST -1). In the longer term, it ought to become true
2756 that declarations are assertions even at SAFETY 1. For now, it's not
2757 quite true even at SAFETY 3, but it's at least more nearly true..
2758 (Note that this change seems to increases the size of the system by
2759 O(5%) and to decrease the speed of the compiler by 20% or more.)
2760 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2761 for the problem of printing dozens of lines of distracting information
2762 about low-level system machinery as part of the top stack frame
2763 on entry to the debugger when an undefined function was called.
2764 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2765 is not reset to COMMON-LISP-USER.
2766 * Compilation of stuff related to dyncount.lisp has been made conditional
2767 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2768 smaller. The various dyncount-related symbols have been moved into
2769 a new "SB-DYNCOUNT" package.
2770 * tty-inspect.lisp has been renamed to inspect.lisp.
2771 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2772 feature has gone away. (When we eventually port to other flavors of
2773 libc and/or Unix, we'll try to make the differences between flavors
2774 invisible at the user level.)
2775 * Various other *FEATURES* tags, and/or their associated conditionals,
2776 have been removed if obsolescent, or given better documentation, or
2777 sometimes given more-mnemonic names.
2779 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2781 * tidied up "make.sh" script
2782 * tidied up system directory structure
2783 * better "clean.sh" behavior
2784 * added doc/FOR-CMUCL-DEVELOPERS
2785 * many many small tweaks to output format, e.g. removing possibly-confusing
2786 trailing #\. character in DESCRIBE-INSTANCE
2787 * (EQUALP #\A 'A) no longer signals an error.
2788 * new hashing code, including EQUALP hashing
2789 * tidied up Lisp initialization and toplevel
2790 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2791 * command line argument processing
2792 * added POSIX-GETENV function to deal with Unix-ish environment variables
2793 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2794 terminating SBCL on EOF
2795 * non-verbose GC by default
2796 * There is no more "sbcl" shell script; the sbcl file is now the C
2797 runtime executable (just like CMU CL).
2798 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2800 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2801 symbol and package information as Lisp native symbol and package objects
2802 instead of strings naming symbols and strings naming packages. This way,
2803 whenever packages are renamed (as in warm init), debug information is
2804 transformed along with everything else.
2805 * tweaked the optimization policy declarations which control the building
2806 of SBCL itself. Now, among other things, the system no longer saves
2807 source location debugging information. (This helps two problems at once
2808 by reducing SBCL size and by keeping SBCL from trying to look for its
2809 sources -- which may not exist -- when reporting errors.)
2810 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2811 debugging and testing purposes
2812 * cleaned up printing, making the printer call PRINT-OBJECT for
2813 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2814 methods, giving nearly-ANSI behavior
2815 * converted almost all special variables to use *FOO* naming convention
2816 * deleted PARSE-TIME functionality, since it can be done portably
2817 * moved some files out of cold init into warm init
2818 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2820 * regularized formatting of source files
2821 * added an install.sh script
2822 * fixed ridiculous memory usage of cross-compiler by making
2823 compiler/alloc.lisp not try to do pooling unless it can hook
2824 itself into the GC of the cross-compilation host. Now the system
2825 builds nicely on my old laptop.
2826 * added :SB-ALLOC in target-features.lisp-expr
2827 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2828 was not implemented)
2829 * re-did condition handling and note reporting in the compiler. Notes
2830 are no longer handled by signalling conditions. Style warnings
2831 and warnings are handled more correctly and reported in such a way
2832 that it's easy to find one or the other in your output (so that you
2833 can e.g. figure out which of many problems caused COMPILE-FILE to
2835 * changed the severity of several compiler warnings from full WARNING
2836 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2837 compiler note reporting so that it doesn't use the condition system
2838 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2839 COMPILE-FILE command)
2840 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2841 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2842 no longer supported, since their implementation was deeply intertwingled
2843 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2844 * removed bogus "support" for compiler macros named (SETF FOO), and
2845 removed the compiler macro for SETF INFO (but only after making a fool
2846 of myself on the cmucl-imp mailing list by posting a bogus patch for
2847 DEFINE-COMPILER-MACRO..)
2848 * Compiled files containing forms which have side effects on the Lisp
2849 reader (such as DEFPACKAGE forms) are now handled more correctly.
2850 (Compiler queuing of top level lambdas has been suppressed by setting
2851 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2852 * deleted various currently-unused source files, e.g. gengc.lisp. They
2853 may be added back at some point e.g. when porting to other architectures,
2854 but until they are it's distracting to distribute them and to try to
2856 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2857 there were so many of them they're just distractions, and UNCROSS is
2858 known to be able to handle the current sources
2859 * moved PROFILE functionality into TRACE, so that it will be clear
2860 how the wrapping and unwrapping of functions when you profile them
2861 interacts with the wrapping and unwrapping of functions when you
2862 trace them. (Actually, the functionality isn't there yet, but at least
2863 the interface specification is there. Hopefully, the functionality will
2864 arrive with some future maintenance release.)
2865 * removed host-oops.lisp
2866 * changed signature of QUIT function to allow UNIX-CODE argument
2867 * fixed READ-SEQUENCE bug
2868 * tweaked verbose GC output so that it looks more like the progress
2869 output that ANSI specifies for functions like LOAD
2870 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2871 * added <http://sbcl.sourceforge.com> to the banner information printed by