1 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2 * enhancement: saving cores with foreign code loaded is now
3 supported on ppc/Darwin in addition to the previously supported
5 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
7 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
8 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
9 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
10 produces an error. (thanks to Vincent Arkesteijn)
11 * bug fix: NAMESTRING on pathnames with :WILD components in their
12 directories works correctly. (thanks to Artem V. Andreev)
14 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
15 * new feature: reloading changed shared object files with
16 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
17 * new feature: references to foreign variables and functions
18 can now be compiled and loaded before the corresponding shared
19 object file is loaded, as long as the foreign definitions are
21 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
22 supported. (thanks to Dan Debertin)
23 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
24 just keywords. (thanks to Vincent Arkesteijn)
25 * fixed bug #331: structure-class instances corresponding to
26 DEFSTRUCT forms are now created eagerly.
27 * fixed bug #345: backtraces from calls to undefined functions work
28 on x86 as well. Related bug #61 is now also partially fixed on x86
29 (backtraces from throws to unknown catch tags.)
30 * bug fix: lambda-list parsing is now stricter vrt. order and number
31 of lambda-list keywords.
32 * bug fix: as specified by AMOP, an error is signalled if a
33 class-option appears multiple times in a DEFCLASS form. (reported
35 * bug fix: RANDOM can be compiled when the compiler derives the type
36 of its numeric argument as a disjoint set of small integers.
37 (reported by Paul Dietz)
38 * bug fix: starting a core saved with shared objects loaded when
39 those objects are not available no longer causes threaded SBCL to
40 hang. (reported by Sean Ross)
41 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
43 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
44 argument, which must always be NIL. (reported by Kalle Niemitalo)
45 * bug fix: printing 1.0d+23 no longer results in an error.
46 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
47 * bug fix: structure slot setters preserve evaluation order. (thanks
49 * fixed some bugs related to Unicode integration:
50 ** RUN-PROGRAM can allow its child to take input from a Lisp
51 stream. (reported by Stefan Scholl)
52 ** ASDF-INSTALL successfully downloads .tar.gz files in all
53 locales. (reported by Ken Causey)
54 * fixed some bugs revealed by Paul Dietz' test suite:
55 ** INCF, DECF and REMF evaluate their place form as specified in
57 ** FORMATTER expands ~{ ~} iteration directives with V or #
59 ** FORMATTER deals with the ~@[ ~] conditional directive where the
60 consequent uses no arguments correctly.
61 ** the system has a partial understanding of the (COMPLEX RATIO)
63 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
66 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
67 * new feature: a build-time option (controlled by the :SB-UNICODE
68 keyword feature, enabled by default) for building the system with
69 support for the entire 21-bit character space defined by the
71 * new feature: the system now has rudimentary external-format
72 support; the primary user-visible change at this time is that
73 characters with the high bit set (such as lower-case-e-acute) will
74 print correctly to a terminal in a UTF-8 environment.
75 * minor incompatible change: BASE-CHAR no longer names a class;
76 however, CHARACTER continues to do so, as required by ANSI.
77 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
78 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
79 has been moved to the SB-EXT package (temporarily re-exported from
81 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
82 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
84 * fixed bug #351: better error-handlind and reporting for malformed
86 * fixed bug #350: bignum-printing is now more memory-efficient,
87 allowing printing of very large bignums, eg. (expt 2 10000000).
88 (reported by Bruno Haible)
89 * fixed bug #302: better primitive-type selection for intersection
91 * fixed bug #308: non-graphic characters now all have names, as
92 required. (reported by Bruno Haible)
93 * bug fix: redefining a class with different superclasses now correctly
94 removes it from the direct-subclasses of its previous superclasses.
95 (reported by David Morse)
96 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
97 new value now works. (reported by Bruno Haible)
98 * bug fix: correct canonicalization of multiple non-standard slot
99 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
100 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
101 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
102 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
103 now exists, an signals an error.
104 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
105 during macroexpansion for non-iteration variables as well. (reported
106 by Bruno Haible for CMUCL)
107 * bug fix: Cyclic structures and unprintable objects in compiler
108 messages no longer cause errors. (reported by Bruno Haible)
109 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
110 and READ-FROM-STRING all now return a primary value of NIL if
111 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
112 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
113 (reported by Bruno Haible for CMUCL)
114 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
115 do not designate a condition. (reported by Bruno Haible for
117 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
118 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
119 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
120 permitting resolution in favour of any of the conflicting symbols.
121 (reported by Bruno Haible for CMUCL)
122 * bug fix: EQUAL compiler optimizations is less aggressive on
123 strings which can potentially compare true despite having distinct
124 specialized array element types.
125 * bug fix: unit enumerations can be defined without dividing by
126 zero. (thanks to Vincent Arkesteijn)
127 * FORMAT compile-time argument count checking has been enhanced.
128 (report from Bruno Haible for CMUCL)
129 * a partial workaround for the bug 262: the compiler does not try to
130 inline-expand a local function doing RETURN-FROM from a deleted
131 BLOCK. (thanks to Peter Denno for the bug report and to David
132 Wragg for the simple test case)
133 * fixed some bugs revealed by Paul Dietz' test suite:
134 ** RENAME-PACKAGE allows all package designators as new package
136 ** constraint propagation and lambda variable substitution are
137 more cautious in dealing with partially deleted code.
138 ** compiler sometimes lost reoptimization passes.
139 ** CERROR, given a condition as condition designator, passes its
140 remaining arguments to the continue format control without
142 ** Case-altering FORMAT directives work correctly on non-ASCII
144 ** The REAL type specifier handles bounds outside the floating
145 point ranges without signalling FLOATING-POINT-OVERFLOW.
146 ** Functions with IR1-transformations can create intercomponent
147 references to global functions.
148 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
150 ** FORMAT ~R treats a nil value for its first parameter correctly.
152 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
153 * enhancement: saving cores with foreign code loaded is now
154 supported on x86/NetBSD and sparc/Linux in addition to the previously
156 * bug fix: on some platforms repeated installations caused multiple
157 copies of HTML documentation to be installed -- should not happen
158 any more. (reported by Stefan Scholl)
159 * bug fix: parsing self-recursive alien record types multiple times
160 no longer causes infinite recursion. (reported by Thomas F. Burdick,
161 original patch by Helmut Eller for CMUCL)
162 * bug fix: stack-exhaustion detection works now on NetBSD as well.
163 (thanks to Richard Kreuter)
164 * bug fix: defining classes whose accessors are methods on existing
165 generic functions in other (locked) packages no longer signals
166 bogus package lock violations. (reported by François-René Rideau)
167 * bug fix: special variables as DEFMETHOD parameters no longer have
168 associated bogus type declarations. (reported by David Wragg and
170 * bug fix: read-write consistency on streams of element-type
171 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
172 * bug fix: redefiniton of the only method of a generic function with
173 no DEFGENERIC no longer emits a full WARNING. In addition,
174 redefinition of generic functions with no DEFGENERIC to an
175 incompatible lambda list now signals an error. (thanks to Zach
177 * bug fix: DEFGENERIC now works even when there's a function of the
178 same name in an enclosing lexical environment. (thanks to Zach
180 * fixed compiler failure, caused by instrumenting code during
181 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
182 * optimization: added loop analysis and improved register allocation
183 * fixed some bugs revealed by Paul Dietz' test suite:
184 ** POSITION on displaced vectors with non-zero displacement
185 returns the right answer.
186 ** (SIMPLE-STRING) is a valid type specifier for sequence
188 ** *PRINT-LEVEL* handling for slotless structures is pedantically
190 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
191 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
193 ** The justification version of the FORMAT ~< directive treats
194 non-zero minpad parameter correctly.
196 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
197 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
198 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
199 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
200 the supported interface.
201 * new feature: Single-stepping of code compiled with DEBUG 2 or
202 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
203 * new feature: saving cores with foreign code loaded is now
204 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
205 Timothy Moore's work for CMUCL)
206 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
207 parameters to * instead of NIL if no initform is supplied.
208 (reported by Johan Bockgaard)
209 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
210 correctly when FUNCALL appears as the car of the form. Note:
211 despite this FUNCALL forms are not currently subject to
212 compiler-macro expansion. (port of Raymond Toy's fix for the
213 same from CMUCL, reported by Johan Bockgaard)
214 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
215 (thanks for Teemu Kalvas)
216 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
217 case instead of terminating the iteration (thanks for Julian
218 Squires, Sean Champ and Raymond Toy)
219 * bug fix: incorrect expansion of defgeneric that caused a style
220 warning. (thanks for Zach Beane)
221 * bug fix: slot accessor effective method computation works properly
222 for classes with multiple non-standard applicable methods on
223 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
224 * on x86 compiler supports stack allocation of results of LIST and
225 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
226 CMUCL implementation by Gerd Moellmann)
227 * fixed some bugs revealed by Paul Dietz' test suite:
228 ** FORMAT strings with both the ~<~:;~> form of the justification
229 directive and pretty-printing directives cause an error.
231 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
232 * incompatible change: the internal functions
233 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
234 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
235 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
236 instead of the old functions.
237 * new feature: on platforms where "dladdr" is available foreign
238 function names now appear in backtraces. (based on Helmut Eller's
240 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
241 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
243 * documentation: ASDF manual is now distributed with SBCL.
244 * bug fix: SBCL can now load its contributed modules with REQUIRE
245 even if the system-provided entries have been removed from
246 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
248 * bug fix: backtraces involving undefined functions or assembly
249 routines are more informative. (thanks to Brian Downing)
250 * bug fix: mutually referent alien structures now work correctly.
251 (reported by Rick Taube)
252 * bug fix: structures defined by WITH-ALIEN can be referred to
253 within other definitions in the same WITH-ALIEN.
254 * bug fix: division operators (MOD, TRUNCATE and the like) with
255 constant zero divisors and integer dividends no longer generate
257 * bug fix: provide default methods for INPUT-STREAM-P and
258 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
259 * bug fix: improve the detection and resolution of MOP metacycles
260 (where effective method computation depends on the generic function
261 having its effective method computed). (reported by Bruno Haible)
262 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
263 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
264 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
265 * bug fix: pathnames with relative directory components can be
266 represented relative to default pathnames.
267 * optimization: in taking the GCD of bignums, reduce the two bignums
268 to approximately the same size (using Euclid's algorithm) before
269 applying the more sophisticated binary GCD. (thanks to Juho
271 * optimization: COUNT on bitvectors now operates word-at-a-time.
272 * optimization: ASH with a positive, but not necessarily constant,
273 (leftwards) shift, when in a modular context, is compiled to a
275 * fixed some bugs revealed by Paul Dietz' test suite:
276 ** FORMAT variable parameters ("~V<char>") are defaulted properly
277 if the corresponding argument is NIL.
278 ** FORMAT directives accepting a minpad parameter treat negative
280 ** literal commas as character parameters to FORMAT directives are
282 ** literal spaces directly after ~<Newline> directives within a
283 format-logical-block (~:< ~@:>) do not induce :FILL-style
284 conditional newlines.
285 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
286 as specified: it no longer includes conditional newlines).
287 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
289 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
290 :PER-LINE-PREFIX argument does not evaluate to a string.
292 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
293 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
294 the manual for details; for now, package locks can be disabled by
295 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
296 if no major problems are found then it is likely that they will be
297 compiled in unconditionally.
298 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
299 unsupported operators on all platforms. To load a shared library
300 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
301 object file, link it into a shared library outside of SBCL and
302 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
304 * bug workaround: ROOM T and the GC were not working together
305 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
306 reporting facility aren't preserved. That reporting has been
307 disabled, so now until and unless someone figures out how to make it
308 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
309 * minor incompatible change: as threatened around sbcl-0.8.0, the
310 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
311 The symbols are also exported from SB-PCL for backwards
312 compatibility, but more so than before SB-PCL should be treated as
313 an implementation-internal package.
314 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
316 * the SB-SPROF contrib now works on (most) non-x86 architectures.
317 It is known as of this release not to work on the Alpha, however.
318 * fixed bug #167: errors signalled due to illegal syntax in method
319 bodies are now more legible.
320 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
321 designators and can hence be used with TYPEP.
322 * fixed bug #333: CHECK-TYPE now ensures that the type error
323 signalled, if any, has the right object to be accessed by
324 TYPE-ERROR-DATUM. (reported by Tony Martinez)
325 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
326 5.1.2.3 for multiple-value place subforms. (reported by Kalle
328 * fixed bug #334: programmatic addition of slots using specialized
329 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
330 and :ALLOCATION :CLASS slots.
331 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
332 float exponents. (rereported by Peter Seibel)
333 * fixed a bug: #\Space (and other whitespace characters) are no
334 longer considered to be macro characters in standard syntax by
336 * fixed bug: initialization of condition class metaobjects no longer
337 causes an instance of the condition to be created. (reported by
339 * fixed bug: it is now possible to have slots such that
340 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
341 description is neither :INSTANCE nor :CLASS.
342 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
343 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
344 SLOT-VALUE-USING-CLASS), and no longer causes errors with
345 non-standard SLOT-DEFINITION-ALLOCATION values.
346 * fixed bugs: various race conditions handling exiting threads.
347 CL-PPCRE's thread torture test now passes.
348 * fixed arguably-a-bug: GC time proportional to number of threads in
349 system even when most of them are idle
350 * optimization: improved performance of BIT and SBIT on bit-vectors.
351 * .fasl file incompatibility: The fasl file version number has
352 been incremented because of changes associated with package locks.
354 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
355 * minor incompatible change: the system no longer provides
356 optimization hints (conditions which are TYPEP
357 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
358 mode; these hints are still emitted when higher SPEED optimization
360 * new contrib module: a sampling profiler (profiling by statistical
361 sampling, rather than by instrumenting functions) is available as
362 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
363 * the behaviour of the standard function ED is now customizeable by
364 third parties through a hook variable: see ED's documentation
365 string for information on the protocol.
366 * the compiler no longer emits efficiency notes for (FUNCALL X)
367 when the type of X is uncertain under default optimization
369 * fixed bug 276: mutating a binding of a specialized parameter to a
370 method to something that is not TYPEP the specializer is now
372 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
373 exhibit the required behaviour on the x86 platform. (thanks to
374 Peter van Eynde, Eric Marsden and Bruno Haible)
375 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
376 even for difficult arguments. (reported by Peter Graves)
377 * fixed bug 141a: the backquote printer now descends quoted
379 * fixed another bug in backquote printing: no more destructive
380 modification of the form's list structure. (reported by Brian
382 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
383 move between its address being taken and the call to
384 interrupt_thread, fixing a crashing race condition.
385 * the SB-POSIX contrib implementation has been adjusted so that it
386 no longer exhibits ridiculously poor performance when constructing
387 instances corresponding to C structs.
389 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
390 * minor incompatible change: the sb-grovel contrib now treats C
391 structures as alien (in the sense of SB-ALIEN) objects rather than
392 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
393 has implications for memory management of client code
394 (sb-grovel-returned objects must now be manually managed) and for
395 type safety (alien objects now have full types).
396 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
397 used to control emission of compiler diagnostics, rather than the
398 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
399 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
400 quality should be considered deprecated.
401 * install.sh now installs the user manual as well
402 * (not quite a new documentable feature, but worth considering in
403 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
404 beginnings of a semantically meaningful condition hierarchy is
405 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
407 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
408 designator as the defaults argument.
409 * fixed bug: Displaced arrays whose displaced-to array has become
410 too small now cause ARRAY-DIMENSION to signal an error, providing
411 for safer bounds-checking. (reported by Bruno Haible)
412 * fixed bug: DEFCLASS slot definitions with identical :READER and
413 :WRITER names now signal a reasonable error. (reported by Thomas
415 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
417 * fixed bug: Invalid slot specification errors now print correctly.
418 (thanks to Zach Beane)
419 * fixed bug 320: Shared to local slot value transfers in class
420 redefinitions now happen corrently from superclasses as
421 well. (reported by Bruno Haible)
422 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
424 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
425 improper lists correctly. (reported by Bruno Haible)
426 * fixed bug 313: source-transform for <fun-name> was erroneously
427 applied to a call of a value of a variable with name <fun-name>.
428 (reported by Antonio Menezes Leitao)
429 * fixed bug 307: The obsolete instance protocol ensures that
430 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
431 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
432 remove dead unknown-values globs from the middle of the stack.
433 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
434 easier to resume long computations after using *BREAK-ON-SIGNALS*
435 to diagnose and fix failures. (thanks to Nikodemus Siivola)
436 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
437 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
438 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
439 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
440 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
442 * fixed a (fairly theoretical) bug in string printing: if
443 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
444 does not have array-element-type equal to the most general string
446 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
447 function name. (thanks to Nikodemus Siivola)
448 * fixed bug: compile-time format string checker failed on
449 non-closed ~{. (reported by Thomas F Burdick)
450 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
451 don't warn on legal loop code involving more than one aggregate
452 boolean. (thanks to Nikodemus Siivola)
453 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
454 in keyword position to MAKE-PACKAGE was not being reported as
456 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
457 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
459 * fixed bugs 280 and 312: the checking for multiple definitions in a
460 file is less likely to become confused by uses of inline
462 * fixed bug: the #S reader macro performs the keyword coercion
463 specified for slot names. (reported by Kalle Niemitalo)
464 * fixed bug: lambda lists may contain symbols whose names start with
465 & but are not lambda-list-keywords; their occurrence triggers a
467 * fixed bug 321: define-method-combination argument lambda lists do
468 not cause invalid code to be generated when &optional or &aux
469 variables have default values. (reported by Bruno Haible)
470 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
471 have CLOS classes; this appears also to have fixed reported
472 instability in stack exhaustion detection.
473 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
474 MUFFLE-WARNING when no associated restart is present is now
476 * optimization: rearranged the expansion of various defining macros
477 so that each expands into only one top-level form in a
478 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
480 * optimization: used a previously little-used slot in symbols to
481 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
483 * fixed some bugs revealed by Paul Dietz' test suite:
484 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
486 ** Fixed an optimization bug related to inheritance of initforms
487 from local to shared slots.
488 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
489 ** CAST optimizer forgot to flush argument derived type.
490 ** print/read consistency on floats is now orders of magnitude
491 more likely. (thanks also to Bruno Haible for a similar report
493 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
494 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
495 for objects of type REAL. Make it so.
496 ** SXHASH is specified (infelicitously) to respect similarity,
497 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
498 it so. (thanks to Markus Ziegler)
499 ** on the Alpha, the compiler succeeds in compiling functions
500 returning a known number of arguments greater than 63.
501 ** fixed handling of invalid NIL arguments in keyword position
503 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
505 ** provided a readably-printable representation for RANDOM-STATE
507 ** ensured that pathnames, where they have a namestring, always
508 print using #P"..." syntax.
510 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
511 * Support for the forthcoming 2.0 version of the NetBSD kernel
512 running on x86 hardware has been added. (thanks to Perry
513 E. Metzger most immediately, and others for their past work)
514 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
515 current release version; SBCL's OpenBSD support had been broken
516 since about the time of OpenBSD's switch to ELF binary format.)
517 * [placeholder for DX summary]
518 ** user code with &REST lists declared dynamic-extent, under high
519 speed or space and low safety and debug optimization policy.
520 * The manual has been converted to Texinfo format and the debugger
521 chapter from the cmucl manual has been added.
522 * A facility has been added to extract documentation strings from
523 sbcl and store them as Texinfo-formatted snippets for inclusion in
524 the manual (via Texinfo's @include directive)
525 * bug fix: compiler emitted division in optimized DEREF. (thanks for
526 the test case to Dave Roberts)
527 * bug fix: multidimensional simple arrays loaded from FASLs had fill
528 pointers. (reported by Sean Ross)
529 * bug fix: PROFILE output is printed nicely even for large numerical
530 values. (thanks to Zach Beane)
531 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
532 greater than 32 handle EOF correctly.
533 * bug fix: on X86 an immediate argument of the IMUL instruction is
534 correctly printed in disassembly. (thanks to Lutz Euler)
535 * bug fix: class slots in redefined classes preserve their old
536 values. (thanks to Bruno Haible and Nikodemus Siivola)
537 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
538 succeeds. (reported by Marco Baringer)
539 * fixed some bugs revealed by Paul Dietz' test suite:
540 ** READ-SEQUENCE now works on ECHO-STREAMs.
541 ** RATIONALIZE works more according to its specification. (thanks
544 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
545 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
546 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
547 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
548 should matter to you only if you rebind the printer control
549 variables and then find you want different bindings in the
550 debugger than in the ordinary execution of your program.)
551 * The runtime build system has been tweaked to support building
552 (on SPARC/SunOS) using a C compiler which invokes Sun's own
553 assembler and linker. (thanks to Nikodemus Siivola)
554 * Unbound, undefined, undeclared variables now trigger full
555 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
556 more often programmer error than deliberate exploitation of undefined
558 * optimization: the hash algorithm for strings has changed to one
559 that is less vulnerable to spurious collisions. (thanks to Juho
561 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
562 needless bounds checking. (thanks to Juho Snellman)
563 * optimization: implemented multiplication as a modular
564 (UNSIGNED-BYTE 32) operation on the PPC backend.
565 * fixed some bugs revealed by Paul Dietz' test suite:
566 ** ADJUST-ARRAY now copies the datum in a zero rank array if
568 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
569 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
570 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
572 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
574 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
576 ** ECHO-STREAMs no longer attempt to echo the end of file value to
577 their output stream on EOF from read.
578 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
579 have been read to end-of-file.
580 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
582 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
583 description of determination of which consecutive characters
585 ** Printing the "Space" character with escaping on now yields "#\\ ",
586 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
587 ** Reading floating-point numbers with *READ-BASE* set to a number
588 less than 10 works correctly.
589 ** Reading floating-point numbers with *READ-BASE* set to a number
590 more than 10 works correctly.
591 ** Printing with *PRINT-READABLY* targets the standard readtable, not
592 the readtable currently in effect.
594 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
595 * minor incompatible change: parsing of namestrings on a physical
596 (Unix) host has changed; numbers after the final #\. in a
597 namestring are no longer interpreted as a version field. This is
598 intented to be largely invisible to the user, except that the
599 meaning of the namestring "*.*.*" has changed: it now refers to a
600 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
601 should usually be replaced by
602 (make-pathname :name :wild :type :wild :version :wild)
603 with the added benefit that this is more likely to be portable.
604 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
605 option to OPEN now signals an error if the file being opened
606 exists; this may have an impact on existing code.
607 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
608 signals received, on the PowerPC platforms (both Linux and
609 Darwin). (thanks to Pierre Mai for pointing out the location of
611 * several fixes on OS X: The system now builds and runs cleanly on
612 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
613 (thanks to Brian Mastenbrook)
614 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
615 second-resolution: integer multiples of 1/3600 between -24 and 24.
616 (thanks to Vincent Arkesteijn)
617 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
618 type when called with 1 argument; PEEK-CHAR checked type of
619 PEEK-TYPE only after having read first character from a
620 stream. (reported by Peter Graves)
621 * bug fix: the garbage collector now has much better locality
622 behaviour, and in particular no longer treats all memory as being
623 exhausted when many small objects point to each other in a deeply
625 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
626 recognized as being TYPEP their class.
627 * bug fix: the PUSHNEW documentation string has been corrected.
628 (thanks to Vincent Arkesteijn)
629 * bug fix: defaulting of the value for the last of an atypically
630 large number of multiple values being bound was not being
631 performed correctly on the Alpha or PPC platforms
632 * optimization: implemented multiplication as a modular
633 (UNSIGNED-BYTE 32) operation on the x86 backend.
634 * optimization: SEARCH on simple-base-strings can now be open-coded.
635 (see also contrib/compiler-extras.lisp for inspiration for
636 teaching the compiler about the Boyer-Moore algorithm).
637 * value, returned by MAX (and MIN) called with several EQUALP, but
638 not EQL, arguments now does not depend on compiler settings.
639 * fixed some bugs revealed by Paul Dietz' test suite:
640 ** in stack analysis liveness information is propagated from
641 non-local entry points.
642 ** pathwise CAST removing failed when the CAST node did not start
644 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
645 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
647 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
648 host is already defined.
649 ** RENAME-FILE works on streams instead of signalling an internal
651 ** PEEK-CHAR uses the current readtable when determining whether
652 or not a character is whitespace.
653 ** MERGE-PATHNAMES handles the case when the pathname does not
654 specify a name while the default-pathname specifies a version.
655 ** Pathnames now stand a better chance of respecting print/read
657 ** Attempting to use standardized file system operators with a
658 pathname with invalid :DIRECTORY components signals a
660 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
662 ** DIRECTORY on logical pathnames is more correct.
663 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
664 signal a TYPE-ERROR if their argument is not a stream.
665 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
666 designator argument does not designate a stream.
667 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
668 examining the synonym.
669 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
671 ** OPEN and WITH-OPEN-STREAM allow opening streams with
672 element-type larger than ([UN]SIGNED-BYTE 32).
674 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
675 * When built with the :SB-FUTEX feature, threaded builds now take
676 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
677 for faster/more reliable mutex and condition variable support.
678 * Incompatible change (but one you probably shouldn't have been using
679 anyway): the interface and code for arbitrating between multiple
680 threads in the same user session has been redesigned.
681 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
682 error when called without an explicit environment argument.
683 (thanks to Nikodemus Siivola)
684 * bug fix: buffered :DIRECTION :IO streams are less likely to become
685 confused about their position. (thanks to Adam Warner and Gerd
687 * bug fix: Pretty printing backquoted forms with unquotations in the
688 argument list position of various code constructs such as LAMBDA
689 now works correctly. (reported by Paul Dietz)
690 * bug fix: Pretty printing unquotations no longer loses all
691 stream position information.
692 * optimization: performance of string output streams is now less
693 poor for multiple small sequence writes.
694 * optimization: performance of CSUBTYPEP in the presence of complex
695 expressions involving CONS and NOT many times has been improved.
696 (reported by Paul Dietz)
697 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
699 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
700 streams for the REPL, for the debugger, and so on. (thanks to
702 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
703 * fixed some bugs revealed by Paul Dietz' test suite:
704 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
705 is ignored if it is too small, rather than propagating through
706 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
707 ** extremely complex negations of CONS types were not being
708 sufficiently canonicalized, leading to inconsistencies in
710 ** VALUES tranformer lost derived type.
712 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
713 * fixed a bootstrapping bug: the build process no longer assumes
714 that the various BOOLE-related constants have the same value in
715 host and target lisps. (noted by Paul Dietz' test suite on an
716 SBCL binary built from CLISP)
717 * The system can now be dynamically linked on the MIPS platform,
718 which enables dynamic loading of foreign code from Lisp. (thanks
719 to Ralf Baechle for discussions on the MIPS ABI)
720 * The system now records debugging information for its own source
721 files in a filesystem-position-independent manner, relative to
722 the "SYS" logical host.
723 * fixed a compiler bug: MV-LET convertion did not check references
724 to the "max args" entry point. (reported by Brian Downing)
725 * tweaked disassembly notes to be less confident about proclaiming
726 some instruction as an LRA. (thanks to Brian Downing)
727 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
728 now each have their own history, command character, and other
729 characteristics. (thanks to David Lichteblau)
730 * fixed some bugs revealed by Paul Dietz' test suite:
731 ** compiler failure in compiling LOGAND expressions including a
733 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
734 shift greater than 32.
735 ** FLUSH-DEST did not mark blocks for type check regeneration.
736 ** HANDLER-CASE failed to accept declarations in handler clauses
737 in some circumstances.
739 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
740 * New code in contrib/sb-introspect (still probably not entirely
741 stable yet) provides some support for smart Lisp development
742 environments like SLIME.
743 * The conditions signalled for errors occurring when loading .fasl
744 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
745 in a way which should help ASDF recover gracefully.
746 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
747 stuff has been cleaned up. If you code contrib/ stuff, this might
748 affect you, and you can look at contrib/README, contrib/STANDARDS,
749 and/or the 0.8.4.27 diff to check.
750 * In full calls the compiler now does not generate checks for declared
751 argument types for all arguments.
752 * various threading fixes
753 ** and some experimental patches which didn't make it into
754 the main tree for this release, but which are shipped in
755 contrib/experimental-thread.patch as a possible fix for some
756 failures (deadlock, spinning...) in GC-intensive multithreaded
758 * fixed PPC build problem (source code incompatibility of different
759 library versions): added offsetof() hackery which attempts to divine
760 where glibc maintainers put uc_mcontext today
761 * fixed bug 282: compiler does not trust type assertions while passing
762 arguments to a full call.
763 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
764 &OPTIONAL VALUES type parameter.
765 * fix bug 214: algorithm for noting rejected templates is now more
766 similar to that of template seletion. (also reported by rydis on
768 * fixed bug 141b: printing backquoted information readably and prettily
769 inserts a space where necessary.
770 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
771 (CHARACTER 10) are now reported as errors, rather than propagated
772 as unknown types. (reported by piso on #lisp)
773 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
774 with values NIL and :ERROR. (thanks to Milan Zamazal)
775 * fixed bug 191c: CLOS now does proper keyword argument checking as
776 described in CLHS 7.6.5 and 7.6.5.1.
777 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
778 longer raise an error; further, using a list as a for-as-arithmetic
779 counter now raises a meaningful error.
780 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
781 now understood by sequence creation functions such as MAKE-SEQUENCE
783 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
784 a STRING-INPUT-STREAM.
785 * compiler enhancement: SIGNUM is now better able to derive the type
787 * type declarations inside WITH-SLOTS are checked. (reported by
789 * fixed some bugs revealed by Paul Dietz' test suite:
790 ** incorrect optimization of TRUNCATE for a positive first
791 argument and negative second.
792 ** compiler failure in let-convertion during flushing dead code.
793 ** compiler failure while deriving type of TRUNCATE on an
794 interval, containing 0.
795 ** ASH of a negative bignum by a negative bignum count now returns
797 ** intersection of CONS types now canonicalizes properly, fixing
798 inconsistencies in SUBTYPEP.
800 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
801 * incompatible change: The --disable-debugger command line
802 option now clobbers the debugger at a more fundamental
803 level, by redefining #'INVOKE-DEBUGGER instead of by
804 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
805 is specified by ANSI to ignore *DEBUGGER-HOOK* and
806 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
807 enter the debugger REPL and then suffer recursive errors
808 because *DEBUG-IO* is also messed up in --disable-debugger mode;
809 while under the new system, BREAK in --disable-debugger mode
810 terminates the system just as an unhandled error would.
811 * fixed compiler performance when processing loops with a step >1;
812 * bug fix: DOCUMENTATION now retrieves generic function
813 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
814 support has been systematized, and now supports the methods
815 specified by ANSI, along with a default method and a method for
816 slot documentation. (reported by Nathan Froyd)
817 * bug fix: effective methods associated with a generic function are
818 no longer cached over a change of that generic function's method
819 combination. (reported by Andreas Fuchs)
820 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
821 names a non-existent directory. (thanks to Andreas Fuchs)
822 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
823 the PPC platform, lead to stack corruption; this has been fixed.
824 (reported by Rainer Joswig)
825 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
826 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
827 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
828 arithmetic in general, is now much more reliable on the PPC
830 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
831 platform now returns the right answer.
832 * optimization: restored some effective method precomputation in
833 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
834 precomputation is now tunable.
835 * optimization: compiler-internal data structure use has been
836 reviewed, and changes have been made that should improve the
837 performance of the compiler by about 20%.
838 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
839 simple-base-strings and simple-bit-vectors is improved.
840 * optimization: the optimization of 32-bit logical and arithmetic
841 functions introduced in version 0.8.3 on the x86 has been
842 implemented on the mips, ppc and sparc platforms; an
843 implementation of the same facility, but for 64-bit arithmetic,
844 has been added for the alpha.
845 * microoptimization: the compiler is better able to make use of the
846 x86 LEA instruction for multiplication by constants.
847 * bug fix: in some situations compiler did not report usage of
848 generic arithmetic in (SPEED 3) policy.
849 * bug 145b fix: compiler used wrong type specifier while converting
850 MEMBER-types to numeric.
851 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
853 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
854 index argument now works properly on the Alpha platform.
855 * bug fix: floating point exception treatment on the Alpha platform
857 * bug fix: FILE-POSITION works much better on string input and
858 output streams. (thanks to Nikodemus Siivola)
859 * bug fix: many threading/garbage collection symptoms sorted.
860 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
861 might be pseudo-atomic.
862 * internal change: Stopping for GC is now done with signals not
863 ptrace. GC is now done in whichever thread wanted it, instead of
865 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
867 * bug fix: result form in DO is not contained in the implicit
869 * incompatible change: ICR structure is changed; the value part of
870 CONTINUATION is now called LVAR; corresponding functions are
871 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
872 * added type deriver for ISQRT (thanks to Robert E. Brown).
873 * bug fix: better support for loading from the command line when an
874 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
876 * fixed some bugs revealed by Paul Dietz' test suite:
877 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
878 ** ROUND and FROUND now give the right answer when given very
879 small float arguments.
880 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
882 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
883 ** (GCD 0 <negative-integer>) returned <negative-integer>.
884 ** LCM should return a non-negative integer.
885 ** PARSE-INTEGER returned the index of a terminator instead of the
886 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
887 ** PARSE-INTEGER returned an incorrect index being applied to a
889 ** LCM with two arguments of 0 returns 0 rather than signalling
891 ** unsigned addition of a 32-bit constant with the high bit set no
892 longer causes an internal compiler error on the x86.
893 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
894 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
895 with negative last argument.
896 ** byte specifiers with zero size and position no longer cause
897 an error during type derivation.
898 ** bignum multiplication on the Alpha platform now returns the
900 * porting: The system now builds on SuSE AMD64, although it still
901 generates a 32-bit binary.
902 * .fasl file incompatibility: The fasl file version number has
903 been incremented (because of the changes to internal compiler
904 data structures referred to above).
906 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
907 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
908 more accurately, on the Darwin kernel running on PowerPC hardware.
909 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
910 * Compiler code deletion notes now signal a condition of type
911 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
912 an associated MUFFLE-WARNING restart.
913 * The compiler now performs limited argument count validation of
914 constant format strings in FORMAT, and where appropriate in ERROR,
915 CERROR and WARN. (thanks to Gerd Moellmann)
916 * New ASDF-INSTALL contrib can be used for automatic download and
917 installation of third-party Lisp code from CCLAN or other sites
919 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
920 which forces another thread to execute a function supplied by the
922 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
923 now accept and act upon their :ELEMENT-TYPE keyword argument.
924 (reported by Martin Atzmueller, Edi Weitz)
925 * bug fix: FILE-POSITION now accepts position designators up to
926 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
927 is the greater. (thanks to Patrik Nordebo)
928 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
929 Kalle Olavi Niemitalo)
930 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
931 printable. (reported by Eric Marsden)
932 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
933 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
934 * x86 bug fix in control stack exhaustion checking: now shows backtrace
935 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
936 (thanks to Stig Sandoe)
937 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
938 UNREAD-CHAR now correctly includes the unread character in the
939 target sequence. (thanks to Gerd Moellmann)
940 * bug fix in threaded builds: the system can now be suspended and
941 resumed by shell job control with minimal disruption.
942 * bug fixes in times and timezones >2038AD
943 * better handling of "where is GNU make?" problem in build scripts
944 (thanks to Nikodemus Siivola)
945 * new optimization: inside a named function any reference to a
946 function with the same name is considered to be a self-reference;
947 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
948 optimization quality.
949 * new optimization on x86: logical functions and + now have
950 optimized (UNSIGNED-BYTE 32) versions, which are automatically
951 used when the result is truncated to 32 bits.
952 * VALUES declaration is partially enabled.
953 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
954 * fixed some bugs revealed by Paul Dietz' test suite:
955 ** The system now obeys the constraint imposed by
956 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
957 types form a lattice under type intersection.
958 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
959 ** ASSOC now ignores NIL elements in an alist.
960 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
961 and (1+ MOST-POSITIVE-FIXNUM) answers.
962 ** The addition of a method with invalid qualifiers to a generic
963 function does not cause an error to be signalled immediately;
964 a warning is signalled, and the error is generated only on
965 calling the generic function.
966 * changed .fasl file version number, in part to add type codes for
967 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
968 obscure ANSI requirements
970 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
971 * fixed bug 148: failure to inline-expand a local function left
972 garbage, confusing the compiler.
973 * fixed bugs 3cd: structure slot readers perform type check if the
974 slot can have an invalid value (i.e. it is either not initialized
975 or can be written with a less specific slot writer).
976 * bug fix: the compiler now traps array references to elements off
977 the end of an array; previously, the bounds checking in some
978 circumstances could go off-by-one.
979 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
981 * type declarations for array element types now obey the description
982 on the CLHS page "Declaration TYPE", as per discussions on
983 sbcl-help around 2003-05-08. This means that a declaration
984 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
985 declaration, all references to BAR will be asserted or assumed
986 (with THE, so dependent on compiler policy) to involve objects of
987 type FOO. Note that no such declaration is implied in
988 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
989 * declared types of functions from the "Conditions"
990 chapter. (reported by Paul Dietz)
991 * bug fix: CERROR accepts a function as its first argument.
992 * bug fix: NTH an NTHCDR accept a bignum as index
993 arguments. (reported by Adam Warner)
994 * optimization: character compare routines now optimize comparing
995 against a constant character. (reported by Gilbert Baumann)
996 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
997 argument now works properly on the MIPS platform.
998 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
999 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1000 declared to have a functional type, does not cause an error
1002 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1003 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1004 * fixed bug: if last continuation of a deleted block has a
1005 destination, this destination should be deleted too. (reported by
1007 * fixed a bug in the bootstrap process: the host compiler's values
1008 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1009 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1010 test case from Patrik Nordebo)
1011 * improved the ability of the disassembler on the PPC platform to
1012 provide helpful disassembly notes.
1013 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1014 the class in more cases than previously.
1015 * bug fix: FILE-POSITION now understands :START and :END for
1016 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1017 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1018 8) data. (thanks to David Lichteblau)
1019 * bug fix: it is possible to add a method to a generic function
1020 without lambda list.
1021 * bug fix: reader failed to signal END-OF-FILE inside an
1022 object representation. (reported by Nikodemus Siivola)
1023 * fixed some bugs revealed by Paul Dietz' test suite:
1024 ** LAST and [N]BUTLAST should accept a bignum.
1025 ** condition slot accessors are methods.
1026 ** (VECTOR NIL) is a subtype of STRING.
1028 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1029 * minor incompatible change: some nonsensical specialized lambda
1030 lists (used in DEFMETHOD) which were previously ignored now signal
1032 * minor incompatible change: the system is now aware of the types of
1033 variables in the COMMON-LISP package, and will signal errors for
1034 most violations of these type constraints (where previously they
1035 were silently accepted).
1036 * minor incompatible change: COMPILE-FILE now uses the freedom
1037 afforded (ANSI 3.2.2.3) to use derived function types for
1038 functions defined in the same file. This also permits the system
1039 to warn on static type mismatches and function
1040 redefinition. (Currently it does not work with high DEBUG level.)
1041 * minor incompatible change: VALUES declaration is disabled.
1042 * When issuing notes, the compiler now signals a condition of type
1043 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1044 restart for use in user handlers. It is expected that the
1045 COMPILER-NOTE condition will eventually become a condition
1046 supertype to a hierarchy of note types, which will then be
1047 handleable in a similar fashion. However, at the moment, no such
1048 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1049 but it's an implementation detail, not a classification for the
1051 * Changes in type checking closed the following bugs:
1052 ** type checking of unused values (192b, 194d, 203);
1053 ** template selection based on unsafe type assertions (192c, 236);
1054 ** type checking in branches (194bc).
1055 * A short form of VALUES type specifier has ANSI meaning (it has
1056 increased the number of situations when SBCL cannot perform type
1058 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1059 keywords or constants is permissible.
1060 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1061 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1062 classes. (thanks to Antonio Martinez)
1063 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1064 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1065 argument to a pretty-print stream. Instead, it leaves any such
1066 operations to DESCRIBE-OBJECT methods.
1067 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1069 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1070 lambda lists. (thanks to David Lichteblau)
1071 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1072 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1073 (thanks to Gerd Moellmann)
1074 * fixed bug 246: increased compilation speed of long
1075 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1077 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1079 * DEFCONSTANT now throws a condition of type
1080 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1081 constant to a non-EQL value; CONTINUE and ABORT restarts
1082 respectively change and preserve the value.
1083 * fixed bug 63: The code walker, part of the implementation of CLOS,
1084 is now better at handling symbol macros.
1085 * bug fix: There is no longer an internal implementation type named
1086 CL:LENGTH. (reported by Raymond Toy)
1087 * bug fix: In macro-like defining macros/special operators the
1088 implicit block does not enclose the lambda list.
1089 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1090 enclosed in parentheses) are not suitable as type specifiers, and
1091 their use properly signals an error now.
1092 * bug fix: An argument count mismatch for a type specifier in code
1093 being compiled no longer causes an unhandled error at compile
1094 time, but signals a compile-time warning.
1095 * fixed simple vector readable printing
1096 * bug fix: DESCRIBE takes more care over whether the class
1097 precedence list slot of a class is bound before accessing it.
1098 (reported by Markus Krummenacker)
1099 * bug fix: FORMATTER can successfully compile pretty-printer format
1100 strings which use variants of the ~* directive inside.
1101 * bug fix: SEARCH now applies its TEST predicate to the elements of
1102 the arguments in the correct order. (thanks to Wolfhard Buss)
1103 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1104 in type inference. (thanks to Robert E. Brown)
1105 * bug fix: Reading in symbols with an explicit package name of ""
1106 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1107 * fixed some bugs revealed by Paul Dietz' test suite:
1108 ** NIL is now allowed as a structure slot name.
1109 ** Arbitrary numbers, not just REALs, are allowed in certain
1110 circumstances in LOOP for-as-arithmetic clauses.
1111 ** Multiple class redefinitions before slot access no longer
1112 causes a type error.
1113 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1114 association between the name and a class.
1115 ** Generic functions with non-standard method-combination and over
1116 five methods all of which return constants no longer return NIL
1117 after the first few invocations. (thanks to Gerd Moellmann)
1118 ** CALL-NEXT-METHOD with no arguments now passes the original
1119 values of the arguments, even in the presence of assignment.
1120 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1122 ** DISASSEMBLE works with closures and funcallable instances.
1123 ** ADD-METHOD now returns the generic function, not the new method.
1124 ** FIND-METHOD signals an error if the lengths of the specializers
1125 is incompatible with the generic function, even if the ERRORP
1127 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1128 which its argument is a member.
1129 ** DEFCLASS only redefines the class named by its class-name
1130 argument if that name is the proper name of the class;
1131 otherwise, it creates a new class.
1132 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1133 of the UNBOUND-SLOT condition to the name of the slot.
1134 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1135 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1136 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1137 SLOT-MAKUNBOUND in the specified fashion.
1139 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1140 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1141 cross-compilation host. As a consequence, we can now bootstrap our
1142 way up to SBCL starting with a bare gcc toolchain and human-readable
1143 source code (first the source to CLISP, then the source to SBCL).
1144 * A contributed module containing a partial implementation of the
1145 simple-streams interface has been included. (thanks to Rudi
1147 * A contributed module implementing the RFC1321 Message Digest
1148 Algorithm, known as MD5, has been included.
1149 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1150 no longer has any effect, as the code controlled by this feature
1151 has been deleted. (As far as we know, no-one has ever built using
1152 this feature, and its semantics were confused in any case).
1153 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1154 work on conditions (as required by the ANSI specification),
1155 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1156 expected behaviour on conditions. Users should note, however,
1157 that such behaviour is not required by the ANSI specification,
1158 and so use of this behaviour may render their code unportable.
1159 * fixed some bugs revealed by Paul Dietz' test suite:
1160 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1162 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1163 ** SXHASH on condition objects no longer returns NIL.
1164 ** :ALLOCATION :CLASS slots are better treated; their values are
1165 updated on class redefinition, and initforms inherited from
1166 superclasses are applied.
1167 ** REMOVE-METHOD returns its generic function argument even when
1168 no method was removed.
1169 ** SHARED-INITIALIZE now initializes the values of the requested
1170 slots, including those with :ALLOCATION :CLASS.
1171 ** ALLOCATE-INSTANCE now works on structure classes defined via
1172 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1174 ** SLOT-EXISTS-P now works on conditions, as well as structures
1176 ** MAKE-LOAD-FORM now has the required methods on
1177 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1178 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1179 keyword, and now implements the SLOT-NAMES argument.
1180 ** methods with &OPTIONAL arguments no longer allow too many
1181 arguments to be passed in the call without error.
1182 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1183 option is consistent with the required arguments of the generic
1184 function lambda list.
1185 * bug fix: REQUIRE accepts a string designator. (Thanks to
1187 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1188 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1189 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1190 * bug fix: The compiler now checks for duplicated variables in macro
1192 * bug fix: SETQ on globals returns the correct value.
1193 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1194 not a COMPILER-ERROR (followed by some other strange error on
1195 choosing the CONTINUE restart).
1196 * bug fix: make.sh and friends are now more consistent in the way that
1197 they look for GNU "make".
1199 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1200 * experimental native threads support (on x86 Linux >=2.4 only).
1201 This is not compiled in by default: you need to add :SB-THREAD to
1202 the target features. See the "Beyond ANSI" chapter of the manual
1204 * fix for longstanding nonANSIism: The old distinction between
1205 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1206 The return value from CL:FIND-CLASS is now a CLOS class, and
1207 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1208 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1209 * An interface to the MetaObject Protocol, as described in Kiczales,
1210 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1211 MIT Press, 1991, is available from the SB-MOP package.
1212 * incompatible change: the SB-PCL package should now be considered
1213 a private implementation detail, and no longer a semi-private MOP
1215 * minor incompatible change: due to rearrangement for threads, the
1216 control stack and binding stack are now allocated at arbitrary
1217 addresses instead of being hardcoded per-port. Users affected by
1218 this probably have to be doing advanced things with shared
1219 libraries, and will know who they are.
1220 * minor incompatible change: Previously, all --eval forms used were
1221 processed with READ before any of them were processed with EVAL.
1222 Now each --eval form is processed with both READ and EVAL before
1223 the next --eval form is processed. (Thus package operations like
1224 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1225 work as the user might reasonably expect.)
1226 * minor incompatible change: *STANDARD-INPUT* is now only an
1227 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1229 * minor incompatible change: Y-OR-N-P is now character-oriented,
1230 not line oriented. Also, YES-OR-NO-P now works without errors.
1231 (thanks to Antonio Martinez)
1232 * sb-aclrepl module improvements: an integrated inspector, added
1233 repl features, and a bug fix to :trace command.
1234 * Known functions, which cannot be open coded by the backend, are
1235 considered to be able to check types of their arguments. (fixing
1236 a bug report by Nathan J. Froyd)
1237 * fixed a bug in computing method discriminating functions: It is
1238 now possible to define methods specialized on classes which have
1239 forward-referenced superclasses. (thanks to Gerd Moellmann)
1240 * fixed evaluation order in optional entries (reported by Gilbert
1242 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1243 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1244 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1245 required-by-AMOP NAME argument, as well as CLASS and
1246 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1247 * fixed bug 20: DEFMETHOD can define methods using names that are
1248 not the proper names of classes to designate class specializers.
1249 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1250 Unix file descriptors, instead of blowing up. (thanks to Antonio
1252 * Garbage collection refactoring: user-visible change is that a
1253 call to the GC function during WITHOUT-GCING will not do garbage
1254 collection until the end of the WITHOUT-GCING. If you were doing
1255 this you were probably losing anyway.
1256 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1257 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1258 TYPEP the latter but not the former.
1259 * The compiler issues a full WARNING for calls to undefined functions
1260 with names from the CL package.
1261 * MAP-INTO for a vector destination is open coded. (reported by
1262 Brian Downing on c.l.l)
1263 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1264 documentation string.
1265 * fixed some bugs revealed by Paul Dietz' test suite:
1266 ** COPY-ALIST now signals an error if its argument is a dotted
1268 ** Condition slots are now accessed more correctly in the presence
1269 of multiple initargs for a given slot.
1270 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1271 exclude restarts of the same name associated with a different
1273 ** DEFCLASS of forward-referenced classes with another
1274 forward-referenced class in the superclasses list no longer
1276 ** Condition slots are now initialized once each, not multiple
1277 times. (thanks to Gerd Moellmann)
1278 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1280 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1281 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1282 arguments contain duplicated elements.
1283 ** RESTART-CASE understands local macros.
1284 ** RESTART-CASE associates exactly its own restarts with a condition.
1285 ** ENDP in safe mode checks its argument to be of type LIST.
1286 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1287 in question is unbound.
1288 ** Optimized MAKE-INSTANCE functions no longer cause internal
1289 assertion failures in the presence of duplicate initargs.
1290 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1291 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1292 propagated even in the ctor optimized implementation of
1294 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1296 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1297 * a better implementation of SXHASH on (simple) bit vectors,
1298 measured both in execution speed and in distribution of results
1299 over the positive fixnums, has been installed. Likewise, a better
1300 implementation of EQUAL for simple bit vectors is now available.
1301 * fixed CEILING optimization for a divisor of form 2^k.
1302 * fixed bug 240 (emitting extra style warnings "using the lexical
1303 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1304 by Antonio Martinez)
1305 * fixed SXHASH, giving different results for NIL depending on type
1306 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1307 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1308 variable. (found by Rolf Wester)
1309 * SBCL does not ignore type declarations for special
1310 variables. (reported by rif on c.l.l 2003-03-05)
1311 * some bug fixes in contrib/sb-aclrepl/
1312 * fixed some bugs revealed by Paul Dietz' test suite:
1313 ** a bug in the CONS type specifier, whereby the CAR and CDR
1314 types got intertwined, has been fixed;
1315 ** the type system is now able to reason about the interaction
1316 between INTEGER and RATIO types more completely;
1317 ** APPEND, [N]REVERSE and NRECONC check that those their
1318 arguments, which must be proper lists, are really so;
1319 ** An array specialized to be unable to hold elements has been
1320 implemented, as required -- yes, really -- by ANSI;
1321 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1322 on malformed property lists;
1324 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1325 * incompatible packaging change: in line with Unix convention,
1326 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1327 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1328 * REQUIRE and PROVIDE are now optionally capable of doing something
1329 useful. See the documentation string for REQUIRE.
1330 * infrastructure for a managed SBCL contrib system: contributed
1331 modules in this release include:
1332 ** the ASDF system definition facility;
1333 ** an interface to the BSD Sockets API;
1334 ** an ACL-like convenience interface to the repl;
1335 (thanks to Kevin Rosenberg)
1336 ** an implementation of ROTATE-BYTE, with efficient implementation
1338 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1339 gives a closer approximation to the right answer than previously.
1340 (thanks to Raymond Toy)
1341 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1342 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1343 optional environment arguments, as required by ANSI.
1344 * fixed bugs in other functions taking environment objects, allowing
1345 calls with an explicit NIL environment argument to be compiled
1347 * fixed bug 228: primary return values from
1348 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1349 COMPILE or FUNCTION.
1350 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1351 :TYPE will no longer signal errors on innocuous objects.
1352 * fixed bug 231b: SETQ is better at respecting type declarations in
1353 the lexical environment.
1354 * fixed a bug in DEFCLASS: classes named by symbols with no or
1355 unprintable packages can now be defined.
1356 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1357 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1358 * fixed compiler failure related to checking types of functions.
1359 (reported by Robert E. Brown)
1360 * the compiler is now much more consistent in its error-checking
1361 treatment of bounding index arguments to sequence functions: in
1362 (SAFETY 3) code, errors will be signalled in almost all cases if
1363 invalid sequence bounding indices are passed to functions defined
1364 by ANSI to operate on sequences.
1365 * fixed a bug in the build procedure: documentation of SBCL-specific
1366 packages is now preserved and available in the final Lisp image.
1367 * lifted FDEFINITION lookup out of loops in the implementation of
1368 many list operations. (thanks to Robert E. Brown)
1369 * fixed a bug in the reader: the #n# reader macro now works for
1370 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1371 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1372 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1373 E. Brown and Tony Martinez respectively)
1374 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1375 SLOT-BOUNDP: in particular, it is now able to optimize them much
1376 better, and is now not vulnerable to having packages renamed.
1377 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1378 always called when a slot is not present in an instance. (thanks
1380 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1381 longer signal an error on unreading a character following EOF on
1382 the previous constituent stream. (thanks to Tony Martinez)
1383 * fixed some bugs revealed by Paul Dietz' test suite:
1384 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1385 not just nonnegative fixnums;
1386 ** the logical bit-array operators such as BIT-AND now accept an
1387 explicit NIL for their "opt-arg" argument (to indicate a
1388 freshly-consed result bit-array);
1389 ** ELT now signals an error on an invalid sequence index in safe
1391 ** the type system is now cleverer about negations of numeric
1392 types, and consequently understands the BIGNUM and RATIO types
1394 ** the type system is now cleverer about the interaction between
1395 INTEGER and RATIO types: while bugs still remain, many more
1396 cases are accurately computed;
1397 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1398 if it is in the last clause;
1399 ** CONSTANTLY now correctly returns a side-effect-free function in
1401 ** DECLARE is no longer treated as a special-operator; in
1402 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1403 * incremented fasl file version number due to the change in the
1404 DEFSTRUCT-SLOT-DESCRIPTION structure.
1406 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1407 * minor incompatible change: code processed by the "interpreter" or
1408 EVAL now has a compilation optimization policy of (DEBUG 2)
1409 (changed from (DEBUG 1)) to improve debuggability of interactive
1410 development, and to allow the use of the debug RETURN command in
1412 * an experimental implementation of the RETURN command for the
1413 debugger has been included. (thanks to Frederik Kuivinen)
1414 * fixed bug 62: constraints were not propagated into a loop.
1415 * fixed bug in embedded calls of SORT (reported and investigated by
1417 * fixed some bugs revealed by Paul Dietz' test suite:
1418 ** printing and reading of arrays with some dimensions having
1419 length 0 (thanks to Gerd Moellmann);
1420 ** BOA constructor with &AUX argument without a default value does
1421 not cause a type error;
1422 ** CONSTANTP now returns true for all self-evaluating objects.
1424 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1425 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1426 accessors that are related by inheritance, as specified in the
1427 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1428 Valtteri Vuorikoski)
1429 * The compiler is now able to inline functions that were defined in
1430 a complex lexical environment (e.g. inside a MACROLET).
1431 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1433 * Support for the upcoming FreeBSD-5.0 release has been included.
1434 (thanks to Dag-Erling Smorgrav)
1435 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1436 effect when it is not in a toplevel context.
1437 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1438 stand a better chance of being correct. (thanks to Gerd
1440 * fixed bug in COERCE, which now signals an error on coercing a
1441 rational to a bounded real type which excludes the expected
1443 * The compiler is now able to derive types more accurately from the
1444 COERCE and COMPILE functions.
1445 * fixed bug 223: functional binding is considered to be constant
1446 only for symbols in the CL package.
1447 * fixed bug 231: SETQ did not check the type of a variable being set
1448 (reported by Robert E. Brown)
1449 * A new optimization for MAKE-INSTANCE has been included, fixing
1450 various bugs (including relating to :ALLOCATION :CLASS slots and
1451 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1453 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1454 ** As required by ANSI, LOOP now disallows anonymous collection
1455 clauses such as COLLECT I in conjunction with aggregate boolean
1456 clauses such as THEREIS (= I 1);
1457 ** LOOP now signals an error when any variable is reused in the
1458 same loop (including the potentially useful construct analogous
1459 to WITH A = 1 WITH A = (1+ A);
1460 ** IT is only a special loop symbol within the first clause of a
1461 conditional loop clause;
1462 ** LOOP with a typed iteration variable over a hashtable now
1463 signals a type error iff it should.
1464 * fixed some other bugs revealed by Paul Dietz' test suite:
1465 ** FILE-STREAM now names the class previously known as FD-STREAM;
1466 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1467 argument) no longer signals an error;
1468 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1469 of the slot symbol, rather than using the current package
1470 ((:CONC-NAME "") continues to intern the slot's name in the
1472 * incremented fasl file version number, because of the incompatible
1473 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1474 of the new implementation of DEFINE-COMPILER-MACRO.
1476 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1477 * Support for building SBCL for MIPS platforms running in
1478 little-endian mode has now been checked in, and basic
1479 functionality on said platforms verified.
1480 * minor incompatible change: PCL now records the pathname of a file
1481 in which methods and the like are defined, rather than its
1483 * minor incompatible change: TRUENAME now considers the truename of
1484 a file naming a directory to be the pathname with :DIRECTORY
1485 component indicating that directory.
1486 * minor incompatible change: a NAMED clause in the extended form of
1487 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1488 reason for the previous behaviour is unclear.
1489 * more systematization and improvement of CLOS and MOP conformance
1490 in PCL (thanks to Gerd Moellman and Pierre Mai):
1491 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1493 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1494 primary methods with no specializers;
1495 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1497 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1498 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1499 FORWARD-REFERENCED-CLASSes; error reporting on
1500 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1502 ** SXHASH on CLOS instances now uses a slot internal to the
1503 instance to return different numbers on distinct instances,
1504 while preserving the same return value through invocations of
1506 ** DEFMETHOD signals errors when methods with longer incongruent
1507 lambda lists are added to generic functions;
1508 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1509 CLASS, as specified in AMOP;
1510 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1511 on the order returned by the primary method for classes of
1512 class STANDARD-CLASS;
1513 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1514 * fixed some bugs shown by Paul Dietz' test suite:
1515 ** DOLIST puts its body in TAGBODY;
1516 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1518 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1519 value producing form;
1520 ** if more variables are given to PROGV than values, extra
1521 variables are bound and made to have no value;
1522 ** NSUBSTITUTE on list arguments gets the right answer with
1524 ** ELT signals an error of type TYPE-ERROR when the index argument
1525 is not a valid sequence index;
1526 ** LOOP signals (at macroexpansion time) an error of type
1527 PROGRAM-ERROR when duplicate variable names are found;
1528 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1529 ** FUNCALL of special-operators now cause an error of type
1531 ** PSETQ now works as required in the presence of side-effecting
1532 symbol-macro places;
1533 ** NCONC accepts any object as its last argument;
1534 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1536 ** loop-for-as-package does not require a package to be explicitely
1538 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1540 * fixed bug 166: compiler preserves "there is a way to go"
1541 invariant when deleting code.
1542 * fixed bug 172: macro lambda lists with required arguments after
1543 &REST arguments now cause an error to be signalled. (thanks to
1545 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1546 bug. (thanks to Matthew Danish)
1547 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1549 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1550 arguments are lexically rebound. (thanks to Gerd Moellmann and
1552 * fixed bug 194: error messages are now more informative when there
1553 is no primary method applicable in a call to a generic
1554 function. (thanks to Gerd Moellmann)
1555 * fixed bug in command line argument checking (thanks to Julian
1557 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1558 (thanks to Matthew Danish)
1559 * incremented fasl file version number, because of the
1560 SXHASH-related changes in the layout of CLOS data structures
1562 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1563 * minor incompatible change: The runtime (the Unix executable named
1564 "sbcl") is now much pickier about the .core files it will load.
1565 Essentially it now requires .core files to descend from the same
1566 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1567 as the runtime does. (The intent is to prevent the crashes which
1568 can occur, and which can even be reported as mysterious failures,
1569 when people patch the sources or change the build parameters
1570 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1571 sbcl and .core files.)
1572 * fixed bug: VALUES-LIST is no longer optimized away.
1573 * fixed bug 142: The FFI conversion of C string values to Lisp
1574 string values no longer conses excessively. (thanks to Nathan
1575 Froyd porting Raymond Toy's fix to CMU CL)
1576 * began to systematize and improve MOP conformance in PCL (thanks to
1577 Nathan Froyd, Gerd Moellman and Pierre Mai):
1578 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1580 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1581 ** FINALIZE-INHERITANCE is now called on class finalization;
1582 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1583 argument precedence order.
1584 * fixed bug 202: The compiler no longer fails on functions whose
1585 derived types contradict their declared type.
1586 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1587 so it can be non-toplevel.
1588 * The fasl file version number has changed (because of the new
1589 implementation of DEFMACRO).
1590 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1591 safe code, that any length requirement by their type-specifier
1592 argument is valid. The exceptions to this are described in bug
1594 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1595 functions now check the types of their inputs as required by ANSI.
1596 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1597 introduced symbol is DECLAREd to be SPECIAL.
1598 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1599 * fixed bug: :COUNT argument to sequence functions may be negative
1600 * fixed bug: body of DO-SYMBOLS may contain declarations
1601 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1602 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1603 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1604 symbol macro only once
1605 * fixed printing of call frame when argument list is unavailable
1606 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1607 * compiler no longer signals WARNING on unknown keyword
1610 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1611 * A beta-quality port to the mips architecture running Linux,
1612 based on the old CMUCL backend, has been made. It has been tested
1613 on a big-endian kernel, and works sufficiently well to be able to
1614 rebuild itself; it has not been tested in little-endian mode.
1615 * fixed an inconsistency between gencgc.c and purify.c which made
1616 dumping/loading .core files unreliable
1617 * fixed bug 120a: The compiler now deals correctly with IFs where
1618 the consequent is the same as the alternative, instead of
1619 misderiving the return type. (thanks to Alexey Dejneka)
1620 * fixed bug 113: Logical pathnames are now dumpable (the logical
1621 host is resolved at load-time, throwing an error if it is not
1623 * fixed bug 174: FORMAT's error message is slightly clearer when a
1624 non-printing character is used in a format directive.
1625 * fixed several bugs in compiler checking of type declarations, i.e.
1626 violations of the Python "declarations are assertions" principle
1627 (thanks to Alexey Dejneka)
1628 * fixed several bugs in PCL's error checking (thanks to Gerd
1630 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1632 * fixed bug in compilation of functions as first class values
1633 (thanks to Antonio Martinez-Shotton)
1634 * The compiler's handling TYPE-ERRORs which it can prove will
1635 inevitably happen at runtime has been cleaned up and corrected
1636 in several ways. (thanks to Alexey Dejneka)
1637 * improved argument type checking for various basic arithmetic
1638 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1639 lavished on them in the past that they can be compiled in many
1640 ways in different special cases
1641 * fixed bug 181: compiler checks validity of user supplied type
1643 * cleaned up code flushing in optimization: Function calls which
1644 should signal errors for safety purposes (e.g. which ANSI says
1645 should signal errors when their arguments are of incorrect type)
1646 are no longer optimized away.
1647 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1648 * incremented fasl file version number, because changes in the
1649 implementation of sequence functions like COERCE caused
1650 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1651 in old inline expansions) to become undefined. (Actually these
1652 changes were later undone, so we might very well be binary
1653 compatible with 0.7.7 after all, but leaving the version number
1654 incremented seemed like the simplest and most conservative
1657 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1658 * An alpha-quality port to the parisc architecture running Linux,
1659 based on the old CMUCL backend, has been made. This, even more so
1660 than the other backends, should be considered still a work in
1661 progress; known problems include that the Linux kernel in 64-bit
1662 mode does not propagate the correct sigcontext structure to
1663 userspace, and consequently SBCL on a parisc64 kernel will not
1665 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1666 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1667 suppressed.) Also now that the compiler is looking at declarations
1668 in the environment, it checks optimization declarations as well,
1669 and suppresses inlining when (> DEBUG SPEED).
1670 * More fixes have been made to treatment of floating point exception
1671 treatment and other Unix signals. In particular, floating point
1672 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1673 * The detection and handling of control stack exhaustion (infinite
1674 or very deeply nested recursion) has changed. Stack exhaustion
1675 detection is now done by write-protecting pages at the OS level
1676 and applies at all optimization settings; when found, a
1677 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1678 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1679 be caught using IGNORE-ERRORS.
1680 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1681 correctly when transforming recursive LABELS functions to LETs.
1682 (thanks to Alexey Dejneka)
1683 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1684 that are names of constants or global variables.
1685 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1686 alien routines with docstrings.
1687 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1688 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1690 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1691 (thanks to Eric Marsden)
1692 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1693 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1694 * Bug fix: The SPARC backend can now compile functions involving
1695 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1696 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1697 to a functions expecting a PATHNAME-DESIGNATOR.
1698 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1699 lambda lists. (thanks to Alexey Dejneka)
1700 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1701 functions so that EXPORTing the name of the class doesn't cause
1702 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1703 to Antonio Martinez for reporting this)
1704 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1705 constant-folded without failing an assertion. (thanks to Einar
1706 Floystad Dorum for reporting this)
1707 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1708 types are now dealt with more correctly by the compiler.
1709 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1710 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1711 behaviour analogous to RENAME-FILE. This puts its behaviour more
1712 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1714 * The fasl file version number has changed again. (because of the
1715 bug fix involving the names of PCL MAKE-INSTANCE functions)
1717 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1718 * bug fix: Floating point exceptions are treated much more
1719 consistently on the x86/Linux and PPC/Linux platforms.
1720 * Array initialization with :INITIAL-ELEMENT is now much faster for
1721 cases when the compiler cannot open code the array creation, but
1722 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1723 array accesses have also seen a speed increase.
1724 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1725 specified. (This was at the root of some bad interactions between
1726 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1728 * bug fix: Internal error arguments for undefined functions are now
1729 computed correctly on the PPC/Linux platform.
1730 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1731 Raymond Toy's patch for CMU CL)
1732 * Support for the Solaris 9 operating environment has been included
1733 (thanks to Daniel Merritt)
1734 * A very ugly but hopefully complete draft of the missing FFI chapter
1735 of the manual has been created by reformatting the corresponding
1736 CMU CL manual chapter into (currently very ugly and incoherent)
1737 DocBook and bringing it up to date for SBCL behavior. Thus, the
1738 manual is now essentially complete, at least by my extreme
1739 once-and-only-once standards, whereby it's acceptable to refer to
1740 the doc strings of SB-EXT functions as the primary documentation.
1741 * The fasl file version number has changed again, due to cleanup of
1742 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1743 is no longer a static symbol.)
1745 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1746 * SBCL now builds with OpenMCL (version 0.12) as the
1747 cross-compilation host; also, more progress has been made toward
1748 bootstrapping under CLISP.
1749 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1751 * bug 158 fixed: The compiler can now deal with integer loop
1752 increments different from 1; fixing this turned out also to fix
1754 * bug 169 fixed: no more bogus warnings about using lexical bindings
1755 despite the presence of perfectly good SPECIAL declarations (thanks
1756 to David Lichteblau)
1757 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1758 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1759 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1761 * bug 180 fixed: Method combination specifications no longer ignore
1762 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1763 * bug fix: Structure type predicate functions now check their argument
1764 count as they should.
1765 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1766 correctly. (thanks to Pierre Mai)
1767 * minor incompatible change: The --noprogrammer option is deprecated
1768 in favor of the new --disable-debugger option, which is very similar.
1769 (The major difference is that it takes effect at a slightly different
1770 time at startup, causing handling of errors in --sysinit and
1771 --userinit files will be affected differently.) The
1772 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1773 been added to allow this functionality to be controlled from ordinary
1774 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1775 maintainers, who might want to run non-interactive scripts to
1776 build SBCL cores which will later be used interactively.)
1777 * minor incompatible change: The LOAD function no longer, when given
1778 a wild pathname to load, loads all files matching that pathname.
1779 Instead, an error of type FILE-ERROR is signalled.
1781 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1782 * bug 147 fixed: The compiler preserves its block link/count
1783 invariants more correctly now so that it doesn't crash. (thanks
1785 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1787 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1788 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1789 no-value-for-this-character as NIL (as specified by ANSI).
1790 * HOST-NAMESTRING on physical pathnames now returns a string that is
1791 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1792 (thanks to Christophe Rhodes)
1793 * The Alpha port handles icache flushing more correctly. (thanks to
1795 * More progress has been made toward bootstrapping under CLISP. (thanks
1796 to Christophe Rhodes)
1797 * The fasl file format has changed again, because dynamic loading
1798 on OpenBSD (which has non-ELF object files) motivated some cleanups
1799 in the way that foreign symbols are transformed and passed around.
1800 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1801 is no longer treated as whitespace by the reader, but instead as
1802 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1803 |A
\7fB|, instead of A as it used to.
1805 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1806 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1807 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1808 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1809 this as of 0.7.1.45, but was left out of the previous news section
1810 (thanks to Dan Barlow)
1811 * SBCL now runs on the Solaris operating system on SPARC architectures
1812 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1813 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1814 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1815 * SPARC backend cleanups, allowing builds of cores optimized for V8
1816 and V9 SPARCS, and also emission of code targeted to a particular
1817 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1819 * SBCL is closer to bootstrapping under CLISP, thanks to various
1820 fixes by Christophe Rhodes.
1821 * The fasl file format has changed again, to allow the compiler's
1822 INFO database to support symbol macros.
1823 * The user manual (in doc/) is formatted into HTML more nicely.
1824 (thanks to coreythomas)
1825 * The system is smarter about SUBTYPEP relationships, especially
1826 those involving NOT types (including types such as ATOM which are
1827 represented internally using NOT types). Thus SUBTYPEP is less
1828 likely to return (VALUES NIL NIL) in general, and in particular
1829 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1831 * The fasl file format has changed again, because the internal
1832 representation of types now includes a new slot to support the new
1833 SUBTYPEP-of-NOT-types logic.
1834 * (not a change in the main branch of SBCL, but a related prototype
1835 which can hopefully be merged into the main branch of SBCL in the
1836 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1837 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1838 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1839 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1840 dispatch macro character combinations. (thanks to Alexey Dejneka)
1841 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1842 that superficially look like logical namestrings correctly.
1843 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1845 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1846 default supplied-p) for &optional and &key arguments. (thanks to
1849 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1850 * incompatible change: The compiler is now less aggressive about
1851 tail call optimization, doing it only when (> SPACE DEBUG) or
1852 (> SPEED DEBUG). (This is an incompatible change because there are
1853 programs which relied on the old CMU-CL-style behavior to optimize
1854 away their unbounded recursion which will now die of stack overflow.)
1855 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1856 for non-GENCGC systems has been increased to 20M (since that
1857 seems much closer to the likely performance optimum for modern
1858 systems than the old 4M value was)
1859 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1860 and *DEBUG-PRINT-LEVEL*
1861 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1862 of CMU CL's support for SPARC, and various endianness and other
1863 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1864 * new syntactic sugar for the Unix command line: --load foo.bar is now
1865 an alternate notation for --eval '(load "foo.bar")'.
1867 ** The system now detects stack overflow and handles it gracefully,
1868 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1869 optimization settings. (This is a good thing in general, and
1870 its introduction in this version should be particularly timely
1871 for anyone whose code fails because of suppression of tail
1873 ** The system now hunts for the C variable "environ" in a more
1874 devious way, to avoid segfaults when the C library version differs
1875 between compile time and run time. (thanks to Christophe Rhodes)
1876 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1877 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1878 ** The compiler no longer issues bogus style warnings for undefined
1879 classes in the same source file as the DEFCLASSes which defined
1880 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1882 ** fixes in CONDITION class precedence list for undefined function
1883 errors (thanks to Alexei Dejneka)
1884 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1885 correctly. (thanks to Dan Barlow)
1886 ** portability fixes aiming at bootstrapping under CLISP (thanks
1887 to Dave McDonald and Christophe Rhodes)
1888 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1889 ** fixes in type translation and and type inference (thanks to
1891 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1892 ** various fixes in the new ports (thanks to Dan Barlow)
1893 * several changes related to debugging:
1894 ** suppression of tail recursion, as noted above
1895 ** stack overflow detection, as noted above
1896 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1897 is now the default. (For some time encapsulation has been more
1898 reliable than the breakpoint-based :ENCAPSULATE NIL
1899 implementation, at least on X86 systems; and I just noticed that
1900 encapsulation also seems closer to the spirit of the ANSI
1903 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1905 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1906 up properly again. (There was a packaging bug in 0.7.0 which
1907 left their definitions in SB-SYS::LOAD-FOREIGN and
1908 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1909 vital for most things which interface to C-level interfaces,
1910 like extensions working with sockets or databases or
1911 Perl-compatible regexes or whatever, and the need to fix
1912 this bug is the main reason that 0.7.1 was released so
1914 ** DEFGENERIC is now choosier about the methods it redefines, so that
1915 reLOADing a previously-LOADed file containing DEFGENERICs does
1916 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1917 cycle now works as it should. (thanks to Alexey Dejneka)
1918 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1919 fixed by Christophe Rhodes. (He actually submitted this patch
1920 months ago, and I delayed until after 0.7.0.)
1921 ** Bug 111 (internal compiler confusion about runtime checks on
1922 FUNCTION types) was fixed by Alexey Dejneka.
1923 * Some internal cleanups (getting rid of variables which aren't
1924 needed now that the byte interpreter is gone) caused the fasl
1925 file format number to change again.
1927 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1928 * major incompatible change: The default fasl file extension, i.e. the
1929 default extension for files produced by COMPILE-FILE, has changed
1930 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1932 ** There are many changes in the implementation of the compiler.
1933 SBCL is now essentially a compiler-only implementation of ANSI
1934 Common Lisp. EVAL still "interprets" a few special cases, but
1935 almost all the interesting cases are handled by creating
1936 a LAMBDA expression, calling COMPILE on it, then calling
1937 FUNCALL on the result.
1938 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1939 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1940 Since the code is newer, there might still be some new bugs
1941 (though not as many as before Martin Atzmueller's fixes:-). But
1942 the new code is substantially simpler and clearer, and hopefully
1943 any remaining bugs will be simpler, less fundamental, and more
1944 fixable then the bugs in the old code.
1945 ** The revised compiler is still a little unsteady on its feet.
1947 *** The debugging information it produces (particularly the names
1948 of FUNCTION objects) is sometimes much less useful than what
1949 the old compiler produced.
1950 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1951 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1952 within a MACROLET) has been temporarily weakened.
1953 ** There are new compiler optimizations for various functions:
1954 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1955 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1956 *** the math functions TRUNCATE, FLOOR, and CEILING
1957 *** the function-of-all-trades COERCE
1958 Mostly these should be transparent, but there's one
1959 potentially-annoying problem (bug 117): when the compiler
1960 inline-expands a function and does type analysis on the result,
1961 it can create control paths which have type mismatches, and
1962 when it can't prove that those control paths aren't taken,
1963 it will issue WARNINGs about the type mismatches. This is
1964 a particular problem in practice for the new sequence functions.
1965 It's not clear how this should be fixed, and for now, a
1966 workaround is given in the entry for 117 in the BUGS file.
1967 ** (Because of the interaction between the two previous items --
1968 occasional inlining problems and new inline expansions -- some
1969 of the new sequence function optimizations won't really kick in
1970 completely until debugging information, and then inlining, are
1971 straightened out in some future version.)
1972 * minor incompatible changes:
1973 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1974 DIRECTORY no longer implicitly promotes NIL slots of its
1975 pathname argument to :WILD. In particular, when you ask for the
1976 contents of a directory (which you used to be able to do without
1977 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1978 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1979 ** changes in behavior that ANSI explicitly defines to be
1980 implementation dependent:
1981 *** The new compiler-only implementation still conforms with ANSI,
1982 but acts a little different than before. Besides the obvious
1983 changes in performance tradeoffs (that the cost per form passed
1984 to EVAL has gone up, and the cost per form executed by EVAL
1985 has gone down), the behavior of the system changes a little
1986 because there are no longer any interpreted function objects.
1987 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
1988 e.g. doing COMPILE on the output of interactive DEFUN is
1990 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
1992 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
1993 has changed from (:CL) to NIL.
1994 *** The CHAR-NAME of unprintable ASCII characters which, unlike
1995 e.g. #\Newline and #\Tab, don't have names specified in the
1996 ANSI Common Lisp standard, is now based on their ASCII symbolic
1997 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
1998 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
1999 are no longer used for output.
2000 ** changes in internal implementation constants:
2001 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2002 4 million. (If your application spends a lot of time GCing and
2003 you have a lot of RAM, you might want to experiment with
2004 increasing it even more.)
2005 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2006 However, almost all old code should still continue to work without
2007 immediate update, as SB-C-CALL is now a (deprecated) nickname
2009 ** Old operator names in the style DEF-FOO are now deprecated in
2010 favor of new corresponding names DEFINE-FOO, for consistency with
2011 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2012 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2013 internal symbols, but a few supported extensions like
2014 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2015 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2016 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2017 etc. as you get deeper into recursive calls to the debugger
2018 command loop, instead of the old "5]", "5]]", "5]]]"
2019 sequence. (I was motivated to do this when squabbles between
2020 ILISP and SBCL left me very deeply nested in the debugger. In the
2021 short term, this change will probably provoke more ILISP/SBCL
2022 squabbles, but hopefully it will be an improvement in the long run.)
2023 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2024 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2025 function, since declaiming return types involving aliens is
2026 (1) annoyingly messy to do by hand and (2) vital to efficient
2027 compilation of code which calls such functions.
2028 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2029 longer reexported by the SB-EXT package. They're solely useful
2030 for alien code, so it seems more logical that you should get
2031 them from the SB-ALIEN package, not in SB-EXT.
2032 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2033 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2034 features. Instead, the code that they used to control is always
2035 built into the system.
2036 * many other bug fixes
2037 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2038 advantage of the new EVAL-WHEN stuff and to clean them up in
2039 general, and they are now more ANSI-compliant in a number of
2040 ways. Martin Atzmueller is responsible for a lot of this.
2041 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2043 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2044 *** correct ERROR type for various file operations
2045 *** some fixes for Lisp streams
2046 *** DEFMETHOD syntax checking
2047 *** changing old weird representation of debug information as
2048 strings (which, among their other deficiencies, don't transform
2049 correctly when you rename packages, and don't change their
2050 print representation when you change things like *PACKAGE*
2051 and *PRINT-LENGTH*) to symbols and lists of symbols
2052 He also made several improvements and fixed several bugs in DESCRIBE.
2053 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2055 *** misbehavior of WRITE-STRING/WRITE-LINE
2056 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2057 and several other LOOP problems as well
2058 *** DIRECTORY when similar filenames are present
2059 *** DEFGENERIC with :METHOD options
2060 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2061 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2062 *** argument ordering in FIND with :TEST option
2063 *** mishandled package designator argument in APROPOS-LIST
2064 *** various problems in the backquote readmacro
2065 *** a bug in APROPOS
2066 *** probably some others that I'm not describing very well here,
2067 since the CVS log documents them by reference to sbcl-devel
2068 messages, and the SourceForge archives aren't working well.:-(
2069 ** Dan Barlow improved the Alpha port (and is making progress on the
2070 PPC port, for those of you who think different).
2071 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2072 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2073 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2074 continues to work on the SPARC port (for those of you in a position
2075 to look down upon our little PC-compatible boxes from a great height).
2076 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2077 and uses that copy, rather than the current dynamic value, when
2078 it's trying to decide whether to truncate output. Thus e.g.
2079 (let ((*print-lines* 50))
2080 (pprint-logical-block (stream nil)
2082 (let ((*print-lines* 8))
2083 (print (aref possiblybigthings i) stream)))))
2084 should now truncate the logical block only at 50 lines, instead of
2085 often truncating it at 8 lines, as it did before.
2086 * The doc/cmucl/ directory, containing old CMU CL documentation
2087 from the time of the fork, is no longer part of the base system.
2088 SourceForge has shut down its anonymous FTP service, and with it
2089 my original plan for distributing the old CMU CL documentation
2090 there. For now, if you need these files you can download an old
2091 SBCL source release and extract them from it.
2092 * The fasl file version number changed again, for dozens of reasons,
2093 some of which are apparent above.
2095 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2096 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2097 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2098 patch, so that DISASSEMBLE output is much nicer.
2099 * The code in the SB-PROFILE package now seems reasonably stable.
2100 I still haven't decided what the final interface should look like
2101 (I'd like PROFILE to interact cleanly with TRACE, since both
2102 facilities use function encapsulation) but if you have a need
2103 for profiling now, you can probably use it successfully with
2104 the current CMU-CL-style interface.
2105 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2106 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2107 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2108 link now returns the dangling link itself, and for similar
2109 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2110 link itself. (In these cases the old code signalled an error and
2111 looped endlessly, respectively.) Thus, DIRECTORY now works even
2112 in the presence of dangling and cyclic symbolic links.
2113 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2114 is now a supported extension again, since the consensus on
2115 sbcl-devel was that it can be useful for ordinary development
2116 work, not just for debugging SBCL itself.
2117 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2118 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2119 that currently-defined functions might be redefined later with
2120 different return types.
2121 * Hash tables can be printed readably, as inspired by CMU CL code
2122 of Eric Marsden and SBCL code of Martin Atzmueller.
2123 * better error handling in CLOS method combination, thanks to
2124 Martin Atzmueller porting Pierre Mai's CMU CL patches
2125 * more overflow fixes for >16Mbyte I/O buffers
2126 * A bug in READ has been fixed, so that now a single Ctrl-D
2127 character suffices to cause end-of-file on character streams.
2128 In particular, now you only need one Ctrl-D at the command
2129 line (not two) to exit SBCL.
2130 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2132 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2133 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2134 does the right thing.
2135 * The implementation of some type tests, especially for CONDITION
2136 types, is now tidier and maybe faster, due to CMU CL code
2137 originally by Douglas Crosher, ported by Martin Atzmueller.
2138 * Some math functions have been fixed, and there are new
2139 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2140 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2141 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2142 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2143 likely to be built into sbcl-0.7.0.)
2144 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2145 CL, ported to SBCL by Martin Atzmueller)
2146 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2147 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2148 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2149 * There's a new slam.sh hack to shorten the edit/compile/debug
2150 cycle for low-level changes to SBCL itself, and a new
2151 :SB-AFTER-XC-CORE target feature to control the generation of
2152 the after-xc.core file needed by slam.sh.
2153 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2154 COMPILE-FILE is no longer supported, so that now every function
2155 gets an entry point, so that block compilation looks a little
2156 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2157 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2158 returns the number of bytes consed since the system started,
2159 rather than the number consed since the first time the function
2160 was called. (The new definition parallels ANSI functions like
2161 CL:GET-INTERNAL-RUN-TIME.)
2162 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2163 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2164 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2165 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2166 * Fasl file version numbers are now independent of the target CPU,
2167 since historically most system changes which required version
2168 number changes have affected all CPUs equally. Similarly,
2169 the byte fasl file version is now equal to the ordinary
2172 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2173 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2174 is no longer recognized. I apologize for this, because it was
2175 listed in SB-EXT as a supported extension, but I found that
2176 its existing behavior was poorly specified, as well as incorrectly
2177 specified, and it looked like too much of a mess to straighten it
2178 out. I have enough on my hands trying to get ANSI stuff to work..
2179 * many patches ported from CMU CL by Martin Atzmueller, with
2180 half a dozen bug fixes in pretty-printing and the debugger, and
2181 half a dozen others elsewhere
2182 * fixed bug 13: Floating point infinities are now supported again.
2183 They might still be a little bit flaky, but thanks to bug reports
2184 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2185 as flaky as they were.
2186 * The --noprogrammer command line option is now supported. (Its
2187 behavior is slightly different in detail from what the old man
2188 page claimed it would do, but it's still appropriate under the
2189 same circumstances that the man page talks about.)
2190 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2191 are now supported, and enabled by default. Thus, the compiler can
2192 handle many floating point and complex operations much less
2193 inefficiently. (Thus e.g. you can implement a complex FFT
2195 * The compiler now detects type mismatches between DECLAIM FTYPE
2196 and DEFUN better, and implements CHECK-TYPE more correctly, and
2197 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2198 thanks to patches from Martin Atzmueller.
2199 * various fixes to make the cross-compiler more portable to
2200 ANSI-conforming-but-different cross-compilation hosts (notably
2201 Lispworks for Windows, following bug reports from Arthur Lemmens)
2202 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2203 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2204 fixed thanks to Pierre Mai's CMU CL patches.
2205 * fixes to keep the system from overflowing internal counters when
2206 it tries to use i/o buffers larger than 16M bytes
2207 * fixed bug 45a: Various internal functions required to support
2208 complex special functions have been merged from CMU CL sources.
2209 (When I was first setting up SBCL, I misunderstood a compile-time
2210 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2211 * improved support for type intersection and union, fixing bug 12
2212 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2213 more obscure bugs as well
2214 * some steps toward byte-compiling non-performance-critical
2215 parts of the system, courtesy of patches from Martin Atzmueller
2216 * Christophe Rhodes has made some debian packages of sbcl at
2217 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2218 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2219 stable, but are nonetheless usable. When he's ready, I'd be happy
2220 to add them to the SourceForge "File Releases" section. (And if
2221 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2222 * new fasl file format version number (because of changes in
2223 internal representation of (OR ..) types to accommodate the new
2224 support for (AND ..) types, among other things)
2226 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2227 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2229 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2231 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2232 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2233 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2234 * DESCRIBE now works on structure objects again.
2235 * Most function call argument type mismatches are now handled as
2236 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2237 know whether the function will be redefined before the call is
2238 executed. (The compiler could flag local calls with full WARNINGs,
2239 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2240 it doesn't keep track of enough information to know whether calls
2241 are local in this sense.)
2242 * Compiler output is now more verbose, with messages truncated
2243 later than before. (There should be some supported way for users
2244 to override the default verbosity, but I haven't decided how to
2245 provide it yet, so this behavior is still controlled by the internal
2246 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2247 src/compiler/ir1util.lisp.)
2248 * Fasl file format version numbers have increased again, because
2249 support for the Gray streams extension changes the layout of the
2250 system's STREAM objects.
2251 * The Gray subclassable streams extension now works, thanks to a
2252 patch from Martin Atzmueller.
2253 * The full LOAD-FOREIGN extension (not just the primitive
2254 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2255 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2256 but like most other programs, it defaults to copying the Unix
2257 environment from the original process instead of starting the
2258 new process in an empty environment.
2259 * Extensions which manipulate the Unix environment now support
2260 an :ENVIRONMENT keyword option which doesn't smash case or
2261 do other bad things. The CMU-CL-style :ENV option is retained
2262 for porting convenience.
2263 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2264 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2266 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2268 * A patch from Martin Atzmueller seems to have solved the SIGINT
2269 problem, and as far as we know, signal-handling now works cleanly.
2270 (If you find any new bugs, please report them!)
2271 * The system no longer defaults Lisp source file names to types
2272 ".l", ".cl", or ".lsp", but only to ".lisp".
2273 * The compiler no longer uses special default file extensions for
2274 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2275 seems to expect a single default extension for all compiled code,
2276 and there's no compelling reason to try to stretch the standard
2277 to allow two different extensions.) Instead, byte-compiled files
2278 default to the same extension as native-compiled files.
2279 * Fasl file format version numbers have increased again, because
2280 a rearrangement of internal implementation packages made some
2281 dumped symbols in old fasl files unreadable in new cores.
2282 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2283 many fewer weird special cases.
2284 * Bug #17 (differing COMPILE-FILE behavior between logical and
2285 physical pathnames) has been fixed, and some related misbehavior too,
2286 thanks to a patch from Martin Atzmueller.
2287 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2288 by Tim Moore, ported to SBCL by Martin Atzmueller.
2289 * Martin Atzmueller fixed several filesystem-related problems,
2290 including bug #36, in part by porting CMU CL patches, which were
2291 written in part by Paul Werkowski.
2292 * More compiler warnings in src/runtime/ are gone, thanks to
2293 more patches from Martin Atzmueller.
2294 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2297 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2299 * DESCRIBE now works on CONDITION objects.
2300 * The debugger now handles errors which arise when trying to print
2301 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2303 * The build system now uses an additional file, customize-target-features.lisp,
2304 to allow local modifications to the target *FEATURES* list. (The point of
2305 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2306 debugging features enabled, without having to worry about propagating it
2307 into everyone's system when I do a "cvs update".) When no
2308 customize-target-features.lisp file exists, the target *FEATURES* list
2309 should be constructed the same way as before.
2310 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2311 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2312 warn about behavior which is undefined under the ANSI spec. Note: This
2313 is specified by ANSI, but it's not very popular with programmers.
2314 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2315 macro in the SBCL sources for an example of a workaround which you
2316 might use to make portable ANSI-standard code which does what you want.
2317 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2318 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2319 when it's used as a non-toplevel form. (This is required in order
2320 to implement the DEFCONSTANT-EQX macro.)
2321 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2322 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2323 funny things, due to bugs in the implementation of EVAL-WHEN
2324 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2325 non-toplevel DEFCONSTANTs are uncommon.)
2326 * The core file version number and fasl file version number have been
2327 incremented, because the old noncompliant DEFCONSTANT behavior involved
2328 calling functions which no longer exist, and because I also took the
2329 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2330 * fixed bug 1 (error handling before read-eval-print loop starts), and
2331 redid debugger restarts and related debugger commands somewhat while
2333 ** The QUIT debugger command is gone, since it did something
2334 rather different than the SB-EXT:QUIT command, and since it never
2335 worked properly outside the main toplevel read/eval/print loop.
2336 Invoking the new TOPLEVEL restart provides the same functionality.
2337 ** The GO debugger command is also gone, since you can just invoke
2338 the CONTINUE restart directly instead.
2339 ** The TOP debugger command is also gone, since it's redundant with the
2340 FRAME 0 command, and since it interfered with abbreviations for the
2342 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2344 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2345 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2346 some porting work by Martin Atzmueller)
2347 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2348 with a boatload of patches which he ported to SBCL. Now that those
2350 ** The system tries to make sure that its low-priority messages
2351 are prefixed by semicolons, to help people who like to use
2352 syntax highlighting in their ILISP buffer. (This patch
2353 was originally due to Raymond Toy.)
2354 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2355 patches originally written by Raymond Toy.
2356 ** The compiler understands coercion between single-value and
2357 multiple-VALUES type expressions better, getting rid of some very
2358 weird behavior, thanks to patches originally by Robert MacLachlan
2359 and Douglas Crosher.
2360 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2361 lambda lists, thanks to a patch originally by Pierre Mai.
2362 ** The system no longer bogusly warns about "abbreviated type
2364 ** The compiler gets less confused by inlining and RETURN-FROM,
2365 thanks to some patches originally by Tim Moore.
2366 ** The system no longer hangs when dumping circular lists to fasl
2367 files, thanks to a patch originally from Douglas Crosher.
2368 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2369 undefined function error.
2370 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2371 in structure slot initforms) for now, documented workaround instead:-|
2372 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2373 * fixed bug 5: added stubs for various Gray stream functions called
2374 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2375 installed, at least appropriate type errors are generated
2376 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2377 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2378 consistently in DEFMETHOD forms.
2379 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2380 it doesn't seem to affect SBCL after all
2381 * The C runtime system now builds with better optimization and many
2382 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2384 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2386 * The system is now under CVS at SourceForge (instead of the
2387 CVS repository on my home machine).
2388 * The new signal handling code has been tweaked to treat register
2389 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2390 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2391 downstream, e.g. in debug-int.lisp, has implicit dependencies
2392 on the unsignedness of integer representation of machine words,
2393 and that caused the system to bomb out with infinite regress
2394 when trying to recover from type errors involving signed values,
2395 e.g. (BUTLAST '(1 2 3) -1).)
2396 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2397 (This was one of the bugs Peter Van Eynde reported back in July.)
2398 * The system now uses code inspired by Colin Walters' O(N)
2399 implementation of MAP (from the cmucl-imp@cons.org mailing
2400 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2401 inline the MAP operation, and there is more than one
2402 sequence argument to the MAP call (so that it can't just
2403 do ETYPECASE once and for all based on the type of the
2404 single sequence argument). (The old non-inline implementation
2405 of the general M-argument sequence-of-length-N case required
2406 O(M*N*N) time when any of the sequence arguments were LISTs.)
2407 * The QUIT :UNIX-CODE keyword argument has been renamed to
2408 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2409 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2411 * Raymond Wiker's patches to port dynamic loading from Linux to
2412 FreeBSD have been added.
2413 * The BUGS file is now more nearly up to date, thanks in large part
2414 to Martin Atzmueller's review of it.
2415 * The debugger now flushes standard output streams before it begins
2416 its output ("debugger invoked" and so forth).
2417 * The core version number and fasl file version number have both
2418 been incremented, because of incompatible changes in the layout
2420 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2421 used to not be called for a saved Lisp image.)
2422 * Martin Atzmueller's version of a patch to fix a compiler crash,
2423 as posted on sbcl-devel 13 September 2000, has been installed.
2424 * Instead of installing Martin Atzmueller's patch for the
2425 compiler transform for SUBSEQ, I deleted the compiler transform,
2426 and transforms for some similar consing operations.
2427 * A bug in signal handling which kept TRACE from working on OpenBSD
2429 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2430 away by constant folding
2431 * The system now defines its address space constants in one place
2432 (in the Lisp sources), and propagates them automatically elsewhere
2433 (through GENESIS and the sbcl.h file). Therefore, patching the
2434 address map is less unnecessarily tedious and error-prone. The
2435 Lisp names of address space constants have also been systematized.
2436 * CVS tags like dollar-Header-dollar have been removed from
2437 the sources, because they have never saved me trouble and
2438 they've been source of trouble working with patches and other
2439 diff-related operations.
2440 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2441 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2443 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2445 * The system has been ported to OpenBSD.
2446 * The system now compiles with a simple "sh make.sh" on the systems
2447 that it's supported on. I.e., now you no longer need to tweak
2448 text in the target-features.lisp-expr and symlinks in src/runtime/
2449 by hand, the make.sh takes care of it for you.
2450 * The system is no longer so grossly inefficient when compiling code
2451 involving vectors implemented as general (not simple) vectors (VECTOR T),
2452 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2453 which dares to use the various sequence functions on non-simple
2454 vectors, takes less of a performance hit.
2455 * There is now a primitive type predicate VECTOR-T-P
2456 to test for the (VECTOR T) type, so that e.g.
2457 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2458 can now be compiled with some semblance of efficiency. (The old code
2459 turned the type declaration into a full call to %TYPEP at runtime!)
2460 * AREF on (VECTOR T) is still not fast, since it's still compiled
2461 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2462 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2463 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2464 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2465 without making full calls to SUBTYPEP at runtime.
2466 (Some analogous efficiency issues for non-simple vectors specialized to
2467 element types other than T, or for non-simple multidimensional arrays,
2468 have not been addressed. They could almost certainly be handled the
2469 same way if anyone is motivated to do so.)
2470 * The changes in array handling break binary compatibility, so
2471 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2472 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2473 instead of (VALUES T T).
2474 * By following the instructions that Dan Barlow posted to sbcl-devel
2475 on 2 July 2000, I was able to enable primitive dynamic object
2476 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2477 functionality is not implemented (since it calls ld to resolve
2478 library references automatically, requiring RUN-PROGRAM for its
2479 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2480 try to resolve library references) is now supported.
2481 * The system now flushes the standard output streams when it terminates,
2482 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2483 them at several other probably-convenient times, e.g. in each pass of
2484 the toplevel read-eval-print loop, and after evaluating a form given
2485 as an "--eval" command-line option. (These changes were motivated by a
2486 discussion of stream flushing issues on cmucl-imp in August 2000.)
2487 * The source transform for TYPEP of array types no longer assumes
2488 that an array whose element type is a not-yet-defined type
2489 is implemented as an array of T, but instead punts, so that the
2490 type will be interpreted at runtime.
2491 * There is now some support for cross-compiling in make.sh: each of
2492 the phases of make.sh has its own script. (This should be transparent
2493 to people doing ordinary, non-cross-compile builds.)
2494 * Since my laptop doesn't have hundreds of megabytes of memory like
2495 my desktop machine, I became more motivated to do some items on
2496 my to-do list in order to reduce the size of the system a little:
2497 ** Arrange for various needed-only-at-cold-init things to be
2498 uninterned after cold init. To support this, those things have
2499 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2500 symbols with such names are now uninterned after cold init).
2501 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2502 fasl files for cold load.
2503 ** Remove the old compiler structure pooling code (which used to
2504 be conditional on the target feature :SB-ALLOC) completely.
2505 ** Redo the representation of some data in cold init to be more compact.
2506 (I also looked into supporting byte compiled code at bootstrap time,
2507 which would probably reduce the size of the system a lot, but that
2508 looked too complicated, so I punted for now.)
2509 * The maximum signal nesting depth in the src/runtime/ support code has
2510 been reduced from 4096 to 256. (I don't know any reason for the very
2511 large old value. If the new smaller value turns out to break something,
2512 I'll probably just bump it back up.)
2513 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2515 * Many, many bugs reported by Peter Van Eynde have been added to
2516 the BUGS list; some have even been fixed.
2517 * While enabling dynamic object file loading, I tried to make the
2518 code easier to understand, renaming various functions and variables
2519 with less ambiguous names, and changing some function calling
2520 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2521 * While trying to figure out how to do the OpenBSD port, I tried to
2522 clean up some of the code in src/runtime/. In particular, I dropped
2523 support for non-POSIX signal handling, added various comments,
2524 tweaked the code to reduce the number of compilation warnings, and
2525 renamed some files to increase consistency.
2526 * To support the new automatic configuration functionality in make.sh,
2527 the source file target-features.lisp-expr has been replaced with the
2528 source file base-target-features.lisp-expr and the machine-generated
2529 file local-target-features.lisp-expr.
2530 * fixed a stupid quoting error in make.sh so that using CMU CL
2531 "lisp -batch" as cross-compilation host works again
2533 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2535 * DESCRIBE no longer tries to call itself recursively to describe
2536 bound/fbound values, so that it no longer fails on symbols which are
2537 bound to themselves (like keywords, T, and NIL).
2538 * DESCRIBE now works on generic functions.
2539 * The printer now prints less-screwed-up representations of closures
2540 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2541 * A private symbol is used instead of the :EMPTY keyword previously
2542 used to mark empty slots in hash tables. Thus
2543 (DEFVAR *HT* (MAKE-HASH-TABLE))
2544 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2545 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2546 now does what ANSI says that it should. (You can still get
2547 similar noncompliant behavior if bang on the hash table
2548 implementation with all the symbols you get back from
2549 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2550 This breaks binary compatibility, since tests for equality to
2551 :EMPTY are wired into things like the macroexpansion of
2552 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2554 * There's now a minimal placeholder implementation for CL:STEP,
2555 as required by ANSI.
2556 * An obscure bug in the interaction of the normal compiler, the byte
2557 compiler, inlining, and structure predicates has been patched
2558 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2559 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2561 * Missing ordinary arguments in a macro call are now detected even
2562 when the macro lambda list contains &KEY or &REST.
2563 * The debugger no longer complains about encountering the top of the
2564 stack when you type "FRAME 0" to explicitly instruct it to go to
2565 the top of the stack. And it now prints the frame you request even
2566 if it's the current frame (instead of saying "You are here.").
2567 * As specified by ANSI, the system now always prints keywords
2568 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2570 * The default initial SIZE of HASH-TABLEs is now smaller.
2571 * Type information from CLOS class dispatch is now propagated
2572 into DEFMETHOD bodies, so that e.g.
2573 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2575 is now basically equivalent to
2576 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2577 (DECLARE (TYPE SINGLE-FLOAT X))
2579 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2580 operation, without having to do run-time type dispatch.
2581 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2582 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2583 * Since I don't seem to be making big file reorganizations very often
2584 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2585 is overflowing my ability to conveniently back them up), I've finally
2586 checked the system into CVS. (The CVS repository is on my home system,
2587 not at SourceForge -- putting it on SourceForge might come later.)
2588 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2589 high-level GC-NOTIFY-FOO functions send their output. (There's
2590 still very little control of where low-level verbose GC functions
2591 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2592 less than it used to -- the GC-NOTIFY-FOO functions are now under
2593 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2594 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2595 in only one place in the source code, and propagates it automatically
2596 everywhere that it's needed. Thus e.g. when I bump the version from
2597 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2598 * The C source files now include boilerplate legalese and documentation
2599 at the head of each file (just as the Lisp source files already did).
2600 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2601 to his page will be replaced with a link to his new CLiki service.
2603 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2605 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2606 * The build process now looks for GNU make under the default name "gmake",
2607 instead of "make" as it used to. If GNU make is not available as "gmake"
2608 on your system, you can change this default behavior by setting the
2609 GNUMAKE environment variable.
2610 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2611 can build without error under CMU CL.
2613 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2615 * There is now a partial SBCL user manual (with some new text and some
2616 text cribbed from the CMU CL manual).
2617 * The beginnings of a profiler have been added (starting with the
2618 CMU CL profiler and simplifying and cleaning up). Eventually the
2619 main interface should be through the TRACE macro, but for now,
2620 it's still accessed through vaguely CMU-CL-style functions and macros
2621 exported from the package SB-PROFILE.
2622 * Some problems left over from porting CMU CL to the new
2623 cross-compilation bootstrap process have been cleaned up:
2624 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2625 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2626 part when getting rid of the compiler *BACKEND* stuff.)
2627 ** The value of *NULL-TYPE* was screwed up, because it was
2628 being initialized before the type system knew the final
2629 definition of the 'NULL type. This screwed up several key
2630 optimizations in the compiler, causing inefficiency in all sorts
2631 of places. (I found it because I wanted to understand why
2632 GET-INTERNAL-RUN-TIME was consing.)
2633 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2634 PROCLAIM FTYPE information. Unfortunately this broke binary
2635 compatibility again, since now the forms output by DEFGENERIC
2636 to refer to functions which didn't exist in 0.6.3.
2637 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2638 can use the new (as of 0.6.3) transform for SOME into MAP into
2640 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2641 values to (INTEGER 0 1000000), so that the time code will no longer
2642 occasionally get blown up by Linux returning 1000000 microseconds
2643 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2644 its output conform to the ANSI spec. (Alas, this makes its output
2645 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2646 * A full call to MAP NIL with a single sequence argument no longer conses.
2647 * fixes to problems pointed out by Martin Atzmueller:
2648 * The manual page no longer talks about multiprocessing as though
2649 it were currently supported.
2650 * The ILISP support patches have been removed from the distribution,
2651 because as of version 5.10.1, ILISP now supports SBCL without us
2652 having to maintain patches.
2653 * added a modified version of Raymond Toy's recent CMU CL patch for
2654 EQUALP comparison of HASH-TABLE
2656 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2658 * The system still can't cross-compile itself with
2659 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2660 entails), but at least it can compile more of itself that way
2661 than it used to be able to, and various buglets which were uncovered
2662 by trying to cross-compile itself that way have now been fixed.
2663 * This release breaks binary compatibility again. This time
2664 at least I've incremented the FASL file format version to 2, so that the
2665 problem can be detected reliably instead of just causing weird errors.
2666 * various new style warnings:
2667 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2668 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2669 ** using the lexical binding of a variable named in the *FOO* style
2670 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2671 as specified by ANSI.
2672 * *RANDOM-STATE* is no longer automatically initialized from
2673 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2674 default behavior of the system is to repeat its behavior every time
2675 it's run. If you'd like to change this behavior, you can always
2676 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2677 old convention there was no comparably easy way to get the system to
2678 repeat its behavior every time it was run.
2679 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2680 FTYPE declarations has been removed, in favor of their ANSI
2681 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2682 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2683 the types of their sequence arguments can be determined at compile time.
2684 This is done through a new open code expansion for MAP which eliminates
2685 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2686 argument types can be determined at compile time.
2687 * The optimizer now transforms COERCE into an identity operation when it
2688 can prove that the coerced object is already of the correct type. (This
2689 can be a win for machine generated code, including the output of other
2690 optimization transforms, such as the MAP transform above.)
2691 * Credit information has been moved from source file headers into CREDITS.
2692 * Source file headers have been made more standard.
2693 * The CASE macro now compiles without complaining even when it has
2696 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2698 * (Note that the way that the PCL macroexpansions were rewritten
2699 to accommodate the change in DEFGENERIC below breaks binary
2700 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2701 not run under sbcl-0.6.2. Once we get out of alpha releases,
2702 i.e. hit release 1.0.0, we'll probably try to maintain binary
2703 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2704 and sbcl-1.4.4. Until then, however, it might be fairly common
2705 for maintenance releases to break binary compatibility.)
2706 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2708 * The reporting of unhandled signals has been changed to print some
2709 explanatory text as well as the report form. (Previously only
2710 the report form was printed.)
2711 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2712 it defines, so that the compiler no longer issues undefined function
2713 warnings for compiled-but-not-yet-loaded generic functions.
2714 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2715 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2716 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2717 section of the ANSI spec are supported.
2718 * The "" nickname for the "KEYWORD" package has been removed.
2719 The reader still handles symbol tokens which begin with a package marker
2720 as keywords, but it doesn't expose its mechanism for doing so in the
2721 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2722 * The system now issues STYLE-WARNINGs for contradictory TYPE
2723 proclamations. (Warnings for contradictory FTYPE proclamations would
2724 be nice too, but those can't be done usefully unless the type system
2725 is made smarter about FUNCTION types.)
2726 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2727 systematized, so that "*target-*.lisp is supposed to exist only on the
2728 target and imply that there's a related file which exists on the
2729 host, and *host-*.lisp is supposed to exist only on the host and imply
2730 that there's a related file which exists on the target. This involves a
2731 lot of renaming. Hopefully the acute confusion caused by the renaming
2732 will be justified by the reduction in chronic confusion..
2733 ** runtime-type.lisp -> early-target-type.lisp
2734 ** target-type.lisp -> late-target-type.lisp
2735 ** early-host-format.lisp -> early-format.lisp
2736 ** late-host-format.lisp -> late-format.lisp
2737 ** host-error.lisp -> misc-error.lisp
2738 ** early-error.lisp -> early-target-error.lisp
2739 ** late-error.lisp -> late-target-error.lisp
2740 ** host-defboot.lisp -> early-defboot.lisp
2741 ** code/misc.lisp -> code/target-misc.lisp
2742 ** code/host-misc.lisp -> code/misc.lisp
2743 ** code/numbers.lisp -> code/target-numbers.lisp
2744 ** code/early-numbers.lisp -> numbers.lisp
2745 ** early-host-type.lisp -> early-type.lisp
2746 ** late-host-type.lisp -> late-type.lisp
2747 ** host-typep.lisp -> typep.lisp
2748 ** load.lisp -> target-load.lisp
2749 ** host-load.lisp -> load.lisp
2750 ** host-disassem.lisp -> disassem.lisp
2751 ** host-insts.lisp -> insts.lisp
2752 ** byte-comp.lisp -> target-byte-comp.lisp
2753 ** host-byte-comp.lisp -> byte-comp.lisp
2754 ** host-signal.lisp -> signal.lisp
2755 ** host-defstruct.lisp -> defstruct.lisp
2756 ** late-target-type.lisp -> deftypes-for-target.lisp
2757 Furthermore, several other previously target-only files foo.lisp (e.g.
2758 hash-table.lisp and random.lisp) have been split into a target-and-host
2759 foo.lisp file and a target-only target-foo.lisp file, with their key type
2760 definitions in the target-and-host part, so that the cross-compiler will
2761 know more about target types.
2762 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2763 gone away. In their place are various *BACKEND-FOO* variables
2764 corresponding to the slots of the old structure.
2765 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2766 into the target SBCL has been fixed.
2767 * The chill.lisp system for loading cold code into a running SBCL
2769 * Support for the CMU CL "scavenger hook" extension has been removed.
2770 (It was undocumented and unused in the CMU CL sources that SBCL was
2771 derived from, and stale in sbcl-0.6.1.)
2772 * Various errors in the cross-compiler type system were detected
2773 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2774 (enabling various consistency checks). Many of them were fixed,
2775 but some hard problems remain, so the compiler is back to
2776 running without *TYPE-SYSTEM-INITIALIZED* for now.
2777 * As part of the cross-compiler type system cleanup, I implemented
2778 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2779 * I have started adding UNCROSS calls throughout the type system
2780 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2781 on cross-compiler input files will be able to go away, and various
2783 * CONSTANTP now returns true for quoted forms (as explicitly required
2786 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2788 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2789 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2790 (MAKE-LIST -1). In the longer term, it ought to become true
2791 that declarations are assertions even at SAFETY 1. For now, it's not
2792 quite true even at SAFETY 3, but it's at least more nearly true..
2793 (Note that this change seems to increases the size of the system by
2794 O(5%) and to decrease the speed of the compiler by 20% or more.)
2795 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2796 for the problem of printing dozens of lines of distracting information
2797 about low-level system machinery as part of the top stack frame
2798 on entry to the debugger when an undefined function was called.
2799 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2800 is not reset to COMMON-LISP-USER.
2801 * Compilation of stuff related to dyncount.lisp has been made conditional
2802 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2803 smaller. The various dyncount-related symbols have been moved into
2804 a new "SB-DYNCOUNT" package.
2805 * tty-inspect.lisp has been renamed to inspect.lisp.
2806 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2807 feature has gone away. (When we eventually port to other flavors of
2808 libc and/or Unix, we'll try to make the differences between flavors
2809 invisible at the user level.)
2810 * Various other *FEATURES* tags, and/or their associated conditionals,
2811 have been removed if obsolescent, or given better documentation, or
2812 sometimes given more-mnemonic names.
2814 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2816 * tidied up "make.sh" script
2817 * tidied up system directory structure
2818 * better "clean.sh" behavior
2819 * added doc/FOR-CMUCL-DEVELOPERS
2820 * many many small tweaks to output format, e.g. removing possibly-confusing
2821 trailing #\. character in DESCRIBE-INSTANCE
2822 * (EQUALP #\A 'A) no longer signals an error.
2823 * new hashing code, including EQUALP hashing
2824 * tidied up Lisp initialization and toplevel
2825 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2826 * command line argument processing
2827 * added POSIX-GETENV function to deal with Unix-ish environment variables
2828 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2829 terminating SBCL on EOF
2830 * non-verbose GC by default
2831 * There is no more "sbcl" shell script; the sbcl file is now the C
2832 runtime executable (just like CMU CL).
2833 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2835 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2836 symbol and package information as Lisp native symbol and package objects
2837 instead of strings naming symbols and strings naming packages. This way,
2838 whenever packages are renamed (as in warm init), debug information is
2839 transformed along with everything else.
2840 * tweaked the optimization policy declarations which control the building
2841 of SBCL itself. Now, among other things, the system no longer saves
2842 source location debugging information. (This helps two problems at once
2843 by reducing SBCL size and by keeping SBCL from trying to look for its
2844 sources -- which may not exist -- when reporting errors.)
2845 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2846 debugging and testing purposes
2847 * cleaned up printing, making the printer call PRINT-OBJECT for
2848 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2849 methods, giving nearly-ANSI behavior
2850 * converted almost all special variables to use *FOO* naming convention
2851 * deleted PARSE-TIME functionality, since it can be done portably
2852 * moved some files out of cold init into warm init
2853 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2855 * regularized formatting of source files
2856 * added an install.sh script
2857 * fixed ridiculous memory usage of cross-compiler by making
2858 compiler/alloc.lisp not try to do pooling unless it can hook
2859 itself into the GC of the cross-compilation host. Now the system
2860 builds nicely on my old laptop.
2861 * added :SB-ALLOC in target-features.lisp-expr
2862 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2863 was not implemented)
2864 * re-did condition handling and note reporting in the compiler. Notes
2865 are no longer handled by signalling conditions. Style warnings
2866 and warnings are handled more correctly and reported in such a way
2867 that it's easy to find one or the other in your output (so that you
2868 can e.g. figure out which of many problems caused COMPILE-FILE to
2870 * changed the severity of several compiler warnings from full WARNING
2871 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2872 compiler note reporting so that it doesn't use the condition system
2873 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2874 COMPILE-FILE command)
2875 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2876 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2877 no longer supported, since their implementation was deeply intertwingled
2878 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2879 * removed bogus "support" for compiler macros named (SETF FOO), and
2880 removed the compiler macro for SETF INFO (but only after making a fool
2881 of myself on the cmucl-imp mailing list by posting a bogus patch for
2882 DEFINE-COMPILER-MACRO..)
2883 * Compiled files containing forms which have side effects on the Lisp
2884 reader (such as DEFPACKAGE forms) are now handled more correctly.
2885 (Compiler queuing of top level lambdas has been suppressed by setting
2886 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2887 * deleted various currently-unused source files, e.g. gengc.lisp. They
2888 may be added back at some point e.g. when porting to other architectures,
2889 but until they are it's distracting to distribute them and to try to
2891 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2892 there were so many of them they're just distractions, and UNCROSS is
2893 known to be able to handle the current sources
2894 * moved PROFILE functionality into TRACE, so that it will be clear
2895 how the wrapping and unwrapping of functions when you profile them
2896 interacts with the wrapping and unwrapping of functions when you
2897 trace them. (Actually, the functionality isn't there yet, but at least
2898 the interface specification is there. Hopefully, the functionality will
2899 arrive with some future maintenance release.)
2900 * removed host-oops.lisp
2901 * changed signature of QUIT function to allow UNIX-CODE argument
2902 * fixed READ-SEQUENCE bug
2903 * tweaked verbose GC output so that it looks more like the progress
2904 output that ANSI specifies for functions like LOAD
2905 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2906 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob