1 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
2 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
3 platform. The port supports 61-bit fixnums, large memory spaces
4 and reloading shared object files.
5 * enhancement: saving cores with foreign code loaded is now
6 supported on ppc/Darwin in addition to the previously supported
8 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
10 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
11 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
12 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
13 produces an error. (thanks to Vincent Arkesteijn)
14 * bug fix: NAMESTRING on pathnames with :WILD components in their
15 directories works correctly. (thanks to Artem V. Andreev)
16 * build fix: fixed the dependence on *LOAD-PATHNAME* and
17 *COMPILE-FILE-PATHNAME* being absolute pathnames.
18 * fixed some bugs related to Unicode integration:
19 ** encoding and decoding errors are now much more robustly
20 handled; it should now be possible to recover even from invalid
21 input or output to the terminal. (thanks to Teemu Kalvas)
22 * fixed some bugs revealed by Paul Dietz' test suite:
23 ** the FORMATTER-generated functions for ~V[ conditionals require
24 the correct number of arguments.
26 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
27 * new feature: reloading changed shared object files with
28 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
29 * new feature: references to foreign variables and functions
30 can now be compiled and loaded before the corresponding shared
31 object file is loaded, as long as the foreign definitions are
33 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
34 supported. (thanks to Dan Debertin)
35 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
36 just keywords. (thanks to Vincent Arkesteijn)
37 * fixed bug #331: structure-class instances corresponding to
38 DEFSTRUCT forms are now created eagerly.
39 * fixed bug #345: backtraces from calls to undefined functions work
40 on x86 as well. Related bug #61 is now also partially fixed on x86
41 (backtraces from throws to unknown catch tags.)
42 * bug fix: lambda-list parsing is now stricter vrt. order and number
43 of lambda-list keywords.
44 * bug fix: as specified by AMOP, an error is signalled if a
45 class-option appears multiple times in a DEFCLASS form. (reported
47 * bug fix: RANDOM can be compiled when the compiler derives the type
48 of its numeric argument as a disjoint set of small integers.
49 (reported by Paul Dietz)
50 * bug fix: starting a core saved with shared objects loaded when
51 those objects are not available no longer causes threaded SBCL to
52 hang. (reported by Sean Ross)
53 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
55 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
56 argument, which must always be NIL. (reported by Kalle Niemitalo)
57 * bug fix: printing 1.0d+23 no longer results in an error.
58 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
59 * bug fix: structure slot setters preserve evaluation order. (thanks
61 * fixed some bugs related to Unicode integration:
62 ** RUN-PROGRAM can allow its child to take input from a Lisp
63 stream. (reported by Stefan Scholl)
64 ** ASDF-INSTALL successfully downloads .tar.gz files in all
65 locales. (reported by Ken Causey)
66 * fixed some bugs revealed by Paul Dietz' test suite:
67 ** INCF, DECF and REMF evaluate their place form as specified in
69 ** FORMATTER expands ~{ ~} iteration directives with V or #
71 ** FORMATTER deals with the ~@[ ~] conditional directive where the
72 consequent uses no arguments correctly.
73 ** the system has a partial understanding of the (COMPLEX RATIO)
75 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
78 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
79 * new feature: a build-time option (controlled by the :SB-UNICODE
80 keyword feature, enabled by default) for building the system with
81 support for the entire 21-bit character space defined by the
83 * new feature: the system now has rudimentary external-format
84 support; the primary user-visible change at this time is that
85 characters with the high bit set (such as lower-case-e-acute) will
86 print correctly to a terminal in a UTF-8 environment.
87 * minor incompatible change: BASE-CHAR no longer names a class;
88 however, CHARACTER continues to do so, as required by ANSI.
89 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
90 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
91 has been moved to the SB-EXT package (temporarily re-exported from
93 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
94 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
96 * fixed bug #351: better error-handlind and reporting for malformed
98 * fixed bug #350: bignum-printing is now more memory-efficient,
99 allowing printing of very large bignums, eg. (expt 2 10000000).
100 (reported by Bruno Haible)
101 * fixed bug #302: better primitive-type selection for intersection
103 * fixed bug #308: non-graphic characters now all have names, as
104 required. (reported by Bruno Haible)
105 * bug fix: redefining a class with different superclasses now correctly
106 removes it from the direct-subclasses of its previous superclasses.
107 (reported by David Morse)
108 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
109 new value now works. (reported by Bruno Haible)
110 * bug fix: correct canonicalization of multiple non-standard slot
111 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
112 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
113 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
114 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
115 now exists, an signals an error.
116 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
117 during macroexpansion for non-iteration variables as well. (reported
118 by Bruno Haible for CMUCL)
119 * bug fix: Cyclic structures and unprintable objects in compiler
120 messages no longer cause errors. (reported by Bruno Haible)
121 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
122 and READ-FROM-STRING all now return a primary value of NIL if
123 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
124 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
125 (reported by Bruno Haible for CMUCL)
126 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
127 do not designate a condition. (reported by Bruno Haible for
129 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
130 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
131 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
132 permitting resolution in favour of any of the conflicting symbols.
133 (reported by Bruno Haible for CMUCL)
134 * bug fix: EQUAL compiler optimizations is less aggressive on
135 strings which can potentially compare true despite having distinct
136 specialized array element types.
137 * bug fix: unit enumerations can be defined without dividing by
138 zero. (thanks to Vincent Arkesteijn)
139 * FORMAT compile-time argument count checking has been enhanced.
140 (report from Bruno Haible for CMUCL)
141 * a partial workaround for the bug 262: the compiler does not try to
142 inline-expand a local function doing RETURN-FROM from a deleted
143 BLOCK. (thanks to Peter Denno for the bug report and to David
144 Wragg for the simple test case)
145 * fixed some bugs revealed by Paul Dietz' test suite:
146 ** RENAME-PACKAGE allows all package designators as new package
148 ** constraint propagation and lambda variable substitution are
149 more cautious in dealing with partially deleted code.
150 ** compiler sometimes lost reoptimization passes.
151 ** CERROR, given a condition as condition designator, passes its
152 remaining arguments to the continue format control without
154 ** Case-altering FORMAT directives work correctly on non-ASCII
156 ** The REAL type specifier handles bounds outside the floating
157 point ranges without signalling FLOATING-POINT-OVERFLOW.
158 ** Functions with IR1-transformations can create intercomponent
159 references to global functions.
160 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
162 ** FORMAT ~R treats a nil value for its first parameter correctly.
164 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
165 * enhancement: saving cores with foreign code loaded is now
166 supported on x86/NetBSD and sparc/Linux in addition to the previously
168 * bug fix: on some platforms repeated installations caused multiple
169 copies of HTML documentation to be installed -- should not happen
170 any more. (reported by Stefan Scholl)
171 * bug fix: parsing self-recursive alien record types multiple times
172 no longer causes infinite recursion. (reported by Thomas F. Burdick,
173 original patch by Helmut Eller for CMUCL)
174 * bug fix: stack-exhaustion detection works now on NetBSD as well.
175 (thanks to Richard Kreuter)
176 * bug fix: defining classes whose accessors are methods on existing
177 generic functions in other (locked) packages no longer signals
178 bogus package lock violations. (reported by François-René Rideau)
179 * bug fix: special variables as DEFMETHOD parameters no longer have
180 associated bogus type declarations. (reported by David Wragg and
182 * bug fix: read-write consistency on streams of element-type
183 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
184 * bug fix: redefiniton of the only method of a generic function with
185 no DEFGENERIC no longer emits a full WARNING. In addition,
186 redefinition of generic functions with no DEFGENERIC to an
187 incompatible lambda list now signals an error. (thanks to Zach
189 * bug fix: DEFGENERIC now works even when there's a function of the
190 same name in an enclosing lexical environment. (thanks to Zach
192 * fixed compiler failure, caused by instrumenting code during
193 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
194 * optimization: added loop analysis and improved register allocation
195 * fixed some bugs revealed by Paul Dietz' test suite:
196 ** POSITION on displaced vectors with non-zero displacement
197 returns the right answer.
198 ** (SIMPLE-STRING) is a valid type specifier for sequence
200 ** *PRINT-LEVEL* handling for slotless structures is pedantically
202 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
203 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
205 ** The justification version of the FORMAT ~< directive treats
206 non-zero minpad parameter correctly.
208 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
209 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
210 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
211 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
212 the supported interface.
213 * new feature: Single-stepping of code compiled with DEBUG 2 or
214 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
215 * new feature: saving cores with foreign code loaded is now
216 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
217 Timothy Moore's work for CMUCL)
218 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
219 parameters to * instead of NIL if no initform is supplied.
220 (reported by Johan Bockgaard)
221 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
222 correctly when FUNCALL appears as the car of the form. Note:
223 despite this FUNCALL forms are not currently subject to
224 compiler-macro expansion. (port of Raymond Toy's fix for the
225 same from CMUCL, reported by Johan Bockgaard)
226 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
227 (thanks for Teemu Kalvas)
228 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
229 case instead of terminating the iteration (thanks for Julian
230 Squires, Sean Champ and Raymond Toy)
231 * bug fix: incorrect expansion of defgeneric that caused a style
232 warning. (thanks for Zach Beane)
233 * bug fix: slot accessor effective method computation works properly
234 for classes with multiple non-standard applicable methods on
235 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
236 * on x86 compiler supports stack allocation of results of LIST and
237 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
238 CMUCL implementation by Gerd Moellmann)
239 * fixed some bugs revealed by Paul Dietz' test suite:
240 ** FORMAT strings with both the ~<~:;~> form of the justification
241 directive and pretty-printing directives cause an error.
243 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
244 * incompatible change: the internal functions
245 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
246 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
247 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
248 instead of the old functions.
249 * new feature: on platforms where "dladdr" is available foreign
250 function names now appear in backtraces. (based on Helmut Eller's
252 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
253 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
255 * documentation: ASDF manual is now distributed with SBCL.
256 * bug fix: SBCL can now load its contributed modules with REQUIRE
257 even if the system-provided entries have been removed from
258 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
260 * bug fix: backtraces involving undefined functions or assembly
261 routines are more informative. (thanks to Brian Downing)
262 * bug fix: mutually referent alien structures now work correctly.
263 (reported by Rick Taube)
264 * bug fix: structures defined by WITH-ALIEN can be referred to
265 within other definitions in the same WITH-ALIEN.
266 * bug fix: division operators (MOD, TRUNCATE and the like) with
267 constant zero divisors and integer dividends no longer generate
269 * bug fix: provide default methods for INPUT-STREAM-P and
270 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
271 * bug fix: improve the detection and resolution of MOP metacycles
272 (where effective method computation depends on the generic function
273 having its effective method computed). (reported by Bruno Haible)
274 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
275 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
276 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
277 * bug fix: pathnames with relative directory components can be
278 represented relative to default pathnames.
279 * optimization: in taking the GCD of bignums, reduce the two bignums
280 to approximately the same size (using Euclid's algorithm) before
281 applying the more sophisticated binary GCD. (thanks to Juho
283 * optimization: COUNT on bitvectors now operates word-at-a-time.
284 * optimization: ASH with a positive, but not necessarily constant,
285 (leftwards) shift, when in a modular context, is compiled to a
287 * fixed some bugs revealed by Paul Dietz' test suite:
288 ** FORMAT variable parameters ("~V<char>") are defaulted properly
289 if the corresponding argument is NIL.
290 ** FORMAT directives accepting a minpad parameter treat negative
292 ** literal commas as character parameters to FORMAT directives are
294 ** literal spaces directly after ~<Newline> directives within a
295 format-logical-block (~:< ~@:>) do not induce :FILL-style
296 conditional newlines.
297 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
298 as specified: it no longer includes conditional newlines).
299 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
301 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
302 :PER-LINE-PREFIX argument does not evaluate to a string.
304 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
305 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
306 the manual for details; for now, package locks can be disabled by
307 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
308 if no major problems are found then it is likely that they will be
309 compiled in unconditionally.
310 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
311 unsupported operators on all platforms. To load a shared library
312 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
313 object file, link it into a shared library outside of SBCL and
314 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
316 * bug workaround: ROOM T and the GC were not working together
317 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
318 reporting facility aren't preserved. That reporting has been
319 disabled, so now until and unless someone figures out how to make it
320 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
321 * minor incompatible change: as threatened around sbcl-0.8.0, the
322 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
323 The symbols are also exported from SB-PCL for backwards
324 compatibility, but more so than before SB-PCL should be treated as
325 an implementation-internal package.
326 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
328 * the SB-SPROF contrib now works on (most) non-x86 architectures.
329 It is known as of this release not to work on the Alpha, however.
330 * fixed bug #167: errors signalled due to illegal syntax in method
331 bodies are now more legible.
332 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
333 designators and can hence be used with TYPEP.
334 * fixed bug #333: CHECK-TYPE now ensures that the type error
335 signalled, if any, has the right object to be accessed by
336 TYPE-ERROR-DATUM. (reported by Tony Martinez)
337 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
338 5.1.2.3 for multiple-value place subforms. (reported by Kalle
340 * fixed bug #334: programmatic addition of slots using specialized
341 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
342 and :ALLOCATION :CLASS slots.
343 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
344 float exponents. (rereported by Peter Seibel)
345 * fixed a bug: #\Space (and other whitespace characters) are no
346 longer considered to be macro characters in standard syntax by
348 * fixed bug: initialization of condition class metaobjects no longer
349 causes an instance of the condition to be created. (reported by
351 * fixed bug: it is now possible to have slots such that
352 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
353 description is neither :INSTANCE nor :CLASS.
354 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
355 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
356 SLOT-VALUE-USING-CLASS), and no longer causes errors with
357 non-standard SLOT-DEFINITION-ALLOCATION values.
358 * fixed bugs: various race conditions handling exiting threads.
359 CL-PPCRE's thread torture test now passes.
360 * fixed arguably-a-bug: GC time proportional to number of threads in
361 system even when most of them are idle
362 * optimization: improved performance of BIT and SBIT on bit-vectors.
363 * .fasl file incompatibility: The fasl file version number has
364 been incremented because of changes associated with package locks.
366 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
367 * minor incompatible change: the system no longer provides
368 optimization hints (conditions which are TYPEP
369 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
370 mode; these hints are still emitted when higher SPEED optimization
372 * new contrib module: a sampling profiler (profiling by statistical
373 sampling, rather than by instrumenting functions) is available as
374 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
375 * the behaviour of the standard function ED is now customizeable by
376 third parties through a hook variable: see ED's documentation
377 string for information on the protocol.
378 * the compiler no longer emits efficiency notes for (FUNCALL X)
379 when the type of X is uncertain under default optimization
381 * fixed bug 276: mutating a binding of a specialized parameter to a
382 method to something that is not TYPEP the specializer is now
384 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
385 exhibit the required behaviour on the x86 platform. (thanks to
386 Peter van Eynde, Eric Marsden and Bruno Haible)
387 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
388 even for difficult arguments. (reported by Peter Graves)
389 * fixed bug 141a: the backquote printer now descends quoted
391 * fixed another bug in backquote printing: no more destructive
392 modification of the form's list structure. (reported by Brian
394 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
395 move between its address being taken and the call to
396 interrupt_thread, fixing a crashing race condition.
397 * the SB-POSIX contrib implementation has been adjusted so that it
398 no longer exhibits ridiculously poor performance when constructing
399 instances corresponding to C structs.
401 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
402 * minor incompatible change: the sb-grovel contrib now treats C
403 structures as alien (in the sense of SB-ALIEN) objects rather than
404 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
405 has implications for memory management of client code
406 (sb-grovel-returned objects must now be manually managed) and for
407 type safety (alien objects now have full types).
408 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
409 used to control emission of compiler diagnostics, rather than the
410 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
411 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
412 quality should be considered deprecated.
413 * install.sh now installs the user manual as well
414 * (not quite a new documentable feature, but worth considering in
415 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
416 beginnings of a semantically meaningful condition hierarchy is
417 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
419 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
420 designator as the defaults argument.
421 * fixed bug: Displaced arrays whose displaced-to array has become
422 too small now cause ARRAY-DIMENSION to signal an error, providing
423 for safer bounds-checking. (reported by Bruno Haible)
424 * fixed bug: DEFCLASS slot definitions with identical :READER and
425 :WRITER names now signal a reasonable error. (reported by Thomas
427 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
429 * fixed bug: Invalid slot specification errors now print correctly.
430 (thanks to Zach Beane)
431 * fixed bug 320: Shared to local slot value transfers in class
432 redefinitions now happen corrently from superclasses as
433 well. (reported by Bruno Haible)
434 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
436 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
437 improper lists correctly. (reported by Bruno Haible)
438 * fixed bug 313: source-transform for <fun-name> was erroneously
439 applied to a call of a value of a variable with name <fun-name>.
440 (reported by Antonio Menezes Leitao)
441 * fixed bug 307: The obsolete instance protocol ensures that
442 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
443 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
444 remove dead unknown-values globs from the middle of the stack.
445 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
446 easier to resume long computations after using *BREAK-ON-SIGNALS*
447 to diagnose and fix failures. (thanks to Nikodemus Siivola)
448 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
449 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
450 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
451 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
452 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
454 * fixed a (fairly theoretical) bug in string printing: if
455 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
456 does not have array-element-type equal to the most general string
458 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
459 function name. (thanks to Nikodemus Siivola)
460 * fixed bug: compile-time format string checker failed on
461 non-closed ~{. (reported by Thomas F Burdick)
462 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
463 don't warn on legal loop code involving more than one aggregate
464 boolean. (thanks to Nikodemus Siivola)
465 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
466 in keyword position to MAKE-PACKAGE was not being reported as
468 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
469 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
471 * fixed bugs 280 and 312: the checking for multiple definitions in a
472 file is less likely to become confused by uses of inline
474 * fixed bug: the #S reader macro performs the keyword coercion
475 specified for slot names. (reported by Kalle Niemitalo)
476 * fixed bug: lambda lists may contain symbols whose names start with
477 & but are not lambda-list-keywords; their occurrence triggers a
479 * fixed bug 321: define-method-combination argument lambda lists do
480 not cause invalid code to be generated when &optional or &aux
481 variables have default values. (reported by Bruno Haible)
482 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
483 have CLOS classes; this appears also to have fixed reported
484 instability in stack exhaustion detection.
485 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
486 MUFFLE-WARNING when no associated restart is present is now
488 * optimization: rearranged the expansion of various defining macros
489 so that each expands into only one top-level form in a
490 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
492 * optimization: used a previously little-used slot in symbols to
493 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
495 * fixed some bugs revealed by Paul Dietz' test suite:
496 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
498 ** Fixed an optimization bug related to inheritance of initforms
499 from local to shared slots.
500 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
501 ** CAST optimizer forgot to flush argument derived type.
502 ** print/read consistency on floats is now orders of magnitude
503 more likely. (thanks also to Bruno Haible for a similar report
505 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
506 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
507 for objects of type REAL. Make it so.
508 ** SXHASH is specified (infelicitously) to respect similarity,
509 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
510 it so. (thanks to Markus Ziegler)
511 ** on the Alpha, the compiler succeeds in compiling functions
512 returning a known number of arguments greater than 63.
513 ** fixed handling of invalid NIL arguments in keyword position
515 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
517 ** provided a readably-printable representation for RANDOM-STATE
519 ** ensured that pathnames, where they have a namestring, always
520 print using #P"..." syntax.
522 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
523 * Support for the forthcoming 2.0 version of the NetBSD kernel
524 running on x86 hardware has been added. (thanks to Perry
525 E. Metzger most immediately, and others for their past work)
526 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
527 current release version; SBCL's OpenBSD support had been broken
528 since about the time of OpenBSD's switch to ELF binary format.)
529 * [placeholder for DX summary]
530 ** user code with &REST lists declared dynamic-extent, under high
531 speed or space and low safety and debug optimization policy.
532 * The manual has been converted to Texinfo format and the debugger
533 chapter from the cmucl manual has been added.
534 * A facility has been added to extract documentation strings from
535 sbcl and store them as Texinfo-formatted snippets for inclusion in
536 the manual (via Texinfo's @include directive)
537 * bug fix: compiler emitted division in optimized DEREF. (thanks for
538 the test case to Dave Roberts)
539 * bug fix: multidimensional simple arrays loaded from FASLs had fill
540 pointers. (reported by Sean Ross)
541 * bug fix: PROFILE output is printed nicely even for large numerical
542 values. (thanks to Zach Beane)
543 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
544 greater than 32 handle EOF correctly.
545 * bug fix: on X86 an immediate argument of the IMUL instruction is
546 correctly printed in disassembly. (thanks to Lutz Euler)
547 * bug fix: class slots in redefined classes preserve their old
548 values. (thanks to Bruno Haible and Nikodemus Siivola)
549 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
550 succeeds. (reported by Marco Baringer)
551 * fixed some bugs revealed by Paul Dietz' test suite:
552 ** READ-SEQUENCE now works on ECHO-STREAMs.
553 ** RATIONALIZE works more according to its specification. (thanks
556 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
557 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
558 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
559 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
560 should matter to you only if you rebind the printer control
561 variables and then find you want different bindings in the
562 debugger than in the ordinary execution of your program.)
563 * The runtime build system has been tweaked to support building
564 (on SPARC/SunOS) using a C compiler which invokes Sun's own
565 assembler and linker. (thanks to Nikodemus Siivola)
566 * Unbound, undefined, undeclared variables now trigger full
567 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
568 more often programmer error than deliberate exploitation of undefined
570 * optimization: the hash algorithm for strings has changed to one
571 that is less vulnerable to spurious collisions. (thanks to Juho
573 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
574 needless bounds checking. (thanks to Juho Snellman)
575 * optimization: implemented multiplication as a modular
576 (UNSIGNED-BYTE 32) operation on the PPC backend.
577 * fixed some bugs revealed by Paul Dietz' test suite:
578 ** ADJUST-ARRAY now copies the datum in a zero rank array if
580 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
581 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
582 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
584 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
586 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
588 ** ECHO-STREAMs no longer attempt to echo the end of file value to
589 their output stream on EOF from read.
590 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
591 have been read to end-of-file.
592 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
594 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
595 description of determination of which consecutive characters
597 ** Printing the "Space" character with escaping on now yields "#\\ ",
598 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
599 ** Reading floating-point numbers with *READ-BASE* set to a number
600 less than 10 works correctly.
601 ** Reading floating-point numbers with *READ-BASE* set to a number
602 more than 10 works correctly.
603 ** Printing with *PRINT-READABLY* targets the standard readtable, not
604 the readtable currently in effect.
606 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
607 * minor incompatible change: parsing of namestrings on a physical
608 (Unix) host has changed; numbers after the final #\. in a
609 namestring are no longer interpreted as a version field. This is
610 intented to be largely invisible to the user, except that the
611 meaning of the namestring "*.*.*" has changed: it now refers to a
612 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
613 should usually be replaced by
614 (make-pathname :name :wild :type :wild :version :wild)
615 with the added benefit that this is more likely to be portable.
616 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
617 option to OPEN now signals an error if the file being opened
618 exists; this may have an impact on existing code.
619 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
620 signals received, on the PowerPC platforms (both Linux and
621 Darwin). (thanks to Pierre Mai for pointing out the location of
623 * several fixes on OS X: The system now builds and runs cleanly on
624 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
625 (thanks to Brian Mastenbrook)
626 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
627 second-resolution: integer multiples of 1/3600 between -24 and 24.
628 (thanks to Vincent Arkesteijn)
629 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
630 type when called with 1 argument; PEEK-CHAR checked type of
631 PEEK-TYPE only after having read first character from a
632 stream. (reported by Peter Graves)
633 * bug fix: the garbage collector now has much better locality
634 behaviour, and in particular no longer treats all memory as being
635 exhausted when many small objects point to each other in a deeply
637 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
638 recognized as being TYPEP their class.
639 * bug fix: the PUSHNEW documentation string has been corrected.
640 (thanks to Vincent Arkesteijn)
641 * bug fix: defaulting of the value for the last of an atypically
642 large number of multiple values being bound was not being
643 performed correctly on the Alpha or PPC platforms
644 * optimization: implemented multiplication as a modular
645 (UNSIGNED-BYTE 32) operation on the x86 backend.
646 * optimization: SEARCH on simple-base-strings can now be open-coded.
647 (see also contrib/compiler-extras.lisp for inspiration for
648 teaching the compiler about the Boyer-Moore algorithm).
649 * value, returned by MAX (and MIN) called with several EQUALP, but
650 not EQL, arguments now does not depend on compiler settings.
651 * fixed some bugs revealed by Paul Dietz' test suite:
652 ** in stack analysis liveness information is propagated from
653 non-local entry points.
654 ** pathwise CAST removing failed when the CAST node did not start
656 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
657 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
659 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
660 host is already defined.
661 ** RENAME-FILE works on streams instead of signalling an internal
663 ** PEEK-CHAR uses the current readtable when determining whether
664 or not a character is whitespace.
665 ** MERGE-PATHNAMES handles the case when the pathname does not
666 specify a name while the default-pathname specifies a version.
667 ** Pathnames now stand a better chance of respecting print/read
669 ** Attempting to use standardized file system operators with a
670 pathname with invalid :DIRECTORY components signals a
672 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
674 ** DIRECTORY on logical pathnames is more correct.
675 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
676 signal a TYPE-ERROR if their argument is not a stream.
677 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
678 designator argument does not designate a stream.
679 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
680 examining the synonym.
681 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
683 ** OPEN and WITH-OPEN-STREAM allow opening streams with
684 element-type larger than ([UN]SIGNED-BYTE 32).
686 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
687 * When built with the :SB-FUTEX feature, threaded builds now take
688 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
689 for faster/more reliable mutex and condition variable support.
690 * Incompatible change (but one you probably shouldn't have been using
691 anyway): the interface and code for arbitrating between multiple
692 threads in the same user session has been redesigned.
693 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
694 error when called without an explicit environment argument.
695 (thanks to Nikodemus Siivola)
696 * bug fix: buffered :DIRECTION :IO streams are less likely to become
697 confused about their position. (thanks to Adam Warner and Gerd
699 * bug fix: Pretty printing backquoted forms with unquotations in the
700 argument list position of various code constructs such as LAMBDA
701 now works correctly. (reported by Paul Dietz)
702 * bug fix: Pretty printing unquotations no longer loses all
703 stream position information.
704 * optimization: performance of string output streams is now less
705 poor for multiple small sequence writes.
706 * optimization: performance of CSUBTYPEP in the presence of complex
707 expressions involving CONS and NOT many times has been improved.
708 (reported by Paul Dietz)
709 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
711 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
712 streams for the REPL, for the debugger, and so on. (thanks to
714 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
715 * fixed some bugs revealed by Paul Dietz' test suite:
716 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
717 is ignored if it is too small, rather than propagating through
718 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
719 ** extremely complex negations of CONS types were not being
720 sufficiently canonicalized, leading to inconsistencies in
722 ** VALUES tranformer lost derived type.
724 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
725 * fixed a bootstrapping bug: the build process no longer assumes
726 that the various BOOLE-related constants have the same value in
727 host and target lisps. (noted by Paul Dietz' test suite on an
728 SBCL binary built from CLISP)
729 * The system can now be dynamically linked on the MIPS platform,
730 which enables dynamic loading of foreign code from Lisp. (thanks
731 to Ralf Baechle for discussions on the MIPS ABI)
732 * The system now records debugging information for its own source
733 files in a filesystem-position-independent manner, relative to
734 the "SYS" logical host.
735 * fixed a compiler bug: MV-LET convertion did not check references
736 to the "max args" entry point. (reported by Brian Downing)
737 * tweaked disassembly notes to be less confident about proclaiming
738 some instruction as an LRA. (thanks to Brian Downing)
739 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
740 now each have their own history, command character, and other
741 characteristics. (thanks to David Lichteblau)
742 * fixed some bugs revealed by Paul Dietz' test suite:
743 ** compiler failure in compiling LOGAND expressions including a
745 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
746 shift greater than 32.
747 ** FLUSH-DEST did not mark blocks for type check regeneration.
748 ** HANDLER-CASE failed to accept declarations in handler clauses
749 in some circumstances.
751 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
752 * New code in contrib/sb-introspect (still probably not entirely
753 stable yet) provides some support for smart Lisp development
754 environments like SLIME.
755 * The conditions signalled for errors occurring when loading .fasl
756 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
757 in a way which should help ASDF recover gracefully.
758 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
759 stuff has been cleaned up. If you code contrib/ stuff, this might
760 affect you, and you can look at contrib/README, contrib/STANDARDS,
761 and/or the 0.8.4.27 diff to check.
762 * In full calls the compiler now does not generate checks for declared
763 argument types for all arguments.
764 * various threading fixes
765 ** and some experimental patches which didn't make it into
766 the main tree for this release, but which are shipped in
767 contrib/experimental-thread.patch as a possible fix for some
768 failures (deadlock, spinning...) in GC-intensive multithreaded
770 * fixed PPC build problem (source code incompatibility of different
771 library versions): added offsetof() hackery which attempts to divine
772 where glibc maintainers put uc_mcontext today
773 * fixed bug 282: compiler does not trust type assertions while passing
774 arguments to a full call.
775 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
776 &OPTIONAL VALUES type parameter.
777 * fix bug 214: algorithm for noting rejected templates is now more
778 similar to that of template seletion. (also reported by rydis on
780 * fixed bug 141b: printing backquoted information readably and prettily
781 inserts a space where necessary.
782 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
783 (CHARACTER 10) are now reported as errors, rather than propagated
784 as unknown types. (reported by piso on #lisp)
785 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
786 with values NIL and :ERROR. (thanks to Milan Zamazal)
787 * fixed bug 191c: CLOS now does proper keyword argument checking as
788 described in CLHS 7.6.5 and 7.6.5.1.
789 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
790 longer raise an error; further, using a list as a for-as-arithmetic
791 counter now raises a meaningful error.
792 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
793 now understood by sequence creation functions such as MAKE-SEQUENCE
795 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
796 a STRING-INPUT-STREAM.
797 * compiler enhancement: SIGNUM is now better able to derive the type
799 * type declarations inside WITH-SLOTS are checked. (reported by
801 * fixed some bugs revealed by Paul Dietz' test suite:
802 ** incorrect optimization of TRUNCATE for a positive first
803 argument and negative second.
804 ** compiler failure in let-convertion during flushing dead code.
805 ** compiler failure while deriving type of TRUNCATE on an
806 interval, containing 0.
807 ** ASH of a negative bignum by a negative bignum count now returns
809 ** intersection of CONS types now canonicalizes properly, fixing
810 inconsistencies in SUBTYPEP.
812 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
813 * incompatible change: The --disable-debugger command line
814 option now clobbers the debugger at a more fundamental
815 level, by redefining #'INVOKE-DEBUGGER instead of by
816 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
817 is specified by ANSI to ignore *DEBUGGER-HOOK* and
818 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
819 enter the debugger REPL and then suffer recursive errors
820 because *DEBUG-IO* is also messed up in --disable-debugger mode;
821 while under the new system, BREAK in --disable-debugger mode
822 terminates the system just as an unhandled error would.
823 * fixed compiler performance when processing loops with a step >1;
824 * bug fix: DOCUMENTATION now retrieves generic function
825 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
826 support has been systematized, and now supports the methods
827 specified by ANSI, along with a default method and a method for
828 slot documentation. (reported by Nathan Froyd)
829 * bug fix: effective methods associated with a generic function are
830 no longer cached over a change of that generic function's method
831 combination. (reported by Andreas Fuchs)
832 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
833 names a non-existent directory. (thanks to Andreas Fuchs)
834 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
835 the PPC platform, lead to stack corruption; this has been fixed.
836 (reported by Rainer Joswig)
837 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
838 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
839 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
840 arithmetic in general, is now much more reliable on the PPC
842 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
843 platform now returns the right answer.
844 * optimization: restored some effective method precomputation in
845 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
846 precomputation is now tunable.
847 * optimization: compiler-internal data structure use has been
848 reviewed, and changes have been made that should improve the
849 performance of the compiler by about 20%.
850 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
851 simple-base-strings and simple-bit-vectors is improved.
852 * optimization: the optimization of 32-bit logical and arithmetic
853 functions introduced in version 0.8.3 on the x86 has been
854 implemented on the mips, ppc and sparc platforms; an
855 implementation of the same facility, but for 64-bit arithmetic,
856 has been added for the alpha.
857 * microoptimization: the compiler is better able to make use of the
858 x86 LEA instruction for multiplication by constants.
859 * bug fix: in some situations compiler did not report usage of
860 generic arithmetic in (SPEED 3) policy.
861 * bug 145b fix: compiler used wrong type specifier while converting
862 MEMBER-types to numeric.
863 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
865 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
866 index argument now works properly on the Alpha platform.
867 * bug fix: floating point exception treatment on the Alpha platform
869 * bug fix: FILE-POSITION works much better on string input and
870 output streams. (thanks to Nikodemus Siivola)
871 * bug fix: many threading/garbage collection symptoms sorted.
872 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
873 might be pseudo-atomic.
874 * internal change: Stopping for GC is now done with signals not
875 ptrace. GC is now done in whichever thread wanted it, instead of
877 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
879 * bug fix: result form in DO is not contained in the implicit
881 * incompatible change: ICR structure is changed; the value part of
882 CONTINUATION is now called LVAR; corresponding functions are
883 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
884 * added type deriver for ISQRT (thanks to Robert E. Brown).
885 * bug fix: better support for loading from the command line when an
886 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
888 * fixed some bugs revealed by Paul Dietz' test suite:
889 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
890 ** ROUND and FROUND now give the right answer when given very
891 small float arguments.
892 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
894 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
895 ** (GCD 0 <negative-integer>) returned <negative-integer>.
896 ** LCM should return a non-negative integer.
897 ** PARSE-INTEGER returned the index of a terminator instead of the
898 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
899 ** PARSE-INTEGER returned an incorrect index being applied to a
901 ** LCM with two arguments of 0 returns 0 rather than signalling
903 ** unsigned addition of a 32-bit constant with the high bit set no
904 longer causes an internal compiler error on the x86.
905 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
906 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
907 with negative last argument.
908 ** byte specifiers with zero size and position no longer cause
909 an error during type derivation.
910 ** bignum multiplication on the Alpha platform now returns the
912 * porting: The system now builds on SuSE AMD64, although it still
913 generates a 32-bit binary.
914 * .fasl file incompatibility: The fasl file version number has
915 been incremented (because of the changes to internal compiler
916 data structures referred to above).
918 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
919 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
920 more accurately, on the Darwin kernel running on PowerPC hardware.
921 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
922 * Compiler code deletion notes now signal a condition of type
923 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
924 an associated MUFFLE-WARNING restart.
925 * The compiler now performs limited argument count validation of
926 constant format strings in FORMAT, and where appropriate in ERROR,
927 CERROR and WARN. (thanks to Gerd Moellmann)
928 * New ASDF-INSTALL contrib can be used for automatic download and
929 installation of third-party Lisp code from CCLAN or other sites
931 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
932 which forces another thread to execute a function supplied by the
934 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
935 now accept and act upon their :ELEMENT-TYPE keyword argument.
936 (reported by Martin Atzmueller, Edi Weitz)
937 * bug fix: FILE-POSITION now accepts position designators up to
938 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
939 is the greater. (thanks to Patrik Nordebo)
940 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
941 Kalle Olavi Niemitalo)
942 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
943 printable. (reported by Eric Marsden)
944 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
945 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
946 * x86 bug fix in control stack exhaustion checking: now shows backtrace
947 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
948 (thanks to Stig Sandoe)
949 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
950 UNREAD-CHAR now correctly includes the unread character in the
951 target sequence. (thanks to Gerd Moellmann)
952 * bug fix in threaded builds: the system can now be suspended and
953 resumed by shell job control with minimal disruption.
954 * bug fixes in times and timezones >2038AD
955 * better handling of "where is GNU make?" problem in build scripts
956 (thanks to Nikodemus Siivola)
957 * new optimization: inside a named function any reference to a
958 function with the same name is considered to be a self-reference;
959 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
960 optimization quality.
961 * new optimization on x86: logical functions and + now have
962 optimized (UNSIGNED-BYTE 32) versions, which are automatically
963 used when the result is truncated to 32 bits.
964 * VALUES declaration is partially enabled.
965 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
966 * fixed some bugs revealed by Paul Dietz' test suite:
967 ** The system now obeys the constraint imposed by
968 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
969 types form a lattice under type intersection.
970 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
971 ** ASSOC now ignores NIL elements in an alist.
972 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
973 and (1+ MOST-POSITIVE-FIXNUM) answers.
974 ** The addition of a method with invalid qualifiers to a generic
975 function does not cause an error to be signalled immediately;
976 a warning is signalled, and the error is generated only on
977 calling the generic function.
978 * changed .fasl file version number, in part to add type codes for
979 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
980 obscure ANSI requirements
982 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
983 * fixed bug 148: failure to inline-expand a local function left
984 garbage, confusing the compiler.
985 * fixed bugs 3cd: structure slot readers perform type check if the
986 slot can have an invalid value (i.e. it is either not initialized
987 or can be written with a less specific slot writer).
988 * bug fix: the compiler now traps array references to elements off
989 the end of an array; previously, the bounds checking in some
990 circumstances could go off-by-one.
991 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
993 * type declarations for array element types now obey the description
994 on the CLHS page "Declaration TYPE", as per discussions on
995 sbcl-help around 2003-05-08. This means that a declaration
996 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
997 declaration, all references to BAR will be asserted or assumed
998 (with THE, so dependent on compiler policy) to involve objects of
999 type FOO. Note that no such declaration is implied in
1000 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1001 * declared types of functions from the "Conditions"
1002 chapter. (reported by Paul Dietz)
1003 * bug fix: CERROR accepts a function as its first argument.
1004 * bug fix: NTH an NTHCDR accept a bignum as index
1005 arguments. (reported by Adam Warner)
1006 * optimization: character compare routines now optimize comparing
1007 against a constant character. (reported by Gilbert Baumann)
1008 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1009 argument now works properly on the MIPS platform.
1010 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1011 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1012 declared to have a functional type, does not cause an error
1014 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1015 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1016 * fixed bug: if last continuation of a deleted block has a
1017 destination, this destination should be deleted too. (reported by
1019 * fixed a bug in the bootstrap process: the host compiler's values
1020 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1021 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1022 test case from Patrik Nordebo)
1023 * improved the ability of the disassembler on the PPC platform to
1024 provide helpful disassembly notes.
1025 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1026 the class in more cases than previously.
1027 * bug fix: FILE-POSITION now understands :START and :END for
1028 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1029 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1030 8) data. (thanks to David Lichteblau)
1031 * bug fix: it is possible to add a method to a generic function
1032 without lambda list.
1033 * bug fix: reader failed to signal END-OF-FILE inside an
1034 object representation. (reported by Nikodemus Siivola)
1035 * fixed some bugs revealed by Paul Dietz' test suite:
1036 ** LAST and [N]BUTLAST should accept a bignum.
1037 ** condition slot accessors are methods.
1038 ** (VECTOR NIL) is a subtype of STRING.
1040 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1041 * minor incompatible change: some nonsensical specialized lambda
1042 lists (used in DEFMETHOD) which were previously ignored now signal
1044 * minor incompatible change: the system is now aware of the types of
1045 variables in the COMMON-LISP package, and will signal errors for
1046 most violations of these type constraints (where previously they
1047 were silently accepted).
1048 * minor incompatible change: COMPILE-FILE now uses the freedom
1049 afforded (ANSI 3.2.2.3) to use derived function types for
1050 functions defined in the same file. This also permits the system
1051 to warn on static type mismatches and function
1052 redefinition. (Currently it does not work with high DEBUG level.)
1053 * minor incompatible change: VALUES declaration is disabled.
1054 * When issuing notes, the compiler now signals a condition of type
1055 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1056 restart for use in user handlers. It is expected that the
1057 COMPILER-NOTE condition will eventually become a condition
1058 supertype to a hierarchy of note types, which will then be
1059 handleable in a similar fashion. However, at the moment, no such
1060 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1061 but it's an implementation detail, not a classification for the
1063 * Changes in type checking closed the following bugs:
1064 ** type checking of unused values (192b, 194d, 203);
1065 ** template selection based on unsafe type assertions (192c, 236);
1066 ** type checking in branches (194bc).
1067 * A short form of VALUES type specifier has ANSI meaning (it has
1068 increased the number of situations when SBCL cannot perform type
1070 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1071 keywords or constants is permissible.
1072 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1073 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1074 classes. (thanks to Antonio Martinez)
1075 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1076 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1077 argument to a pretty-print stream. Instead, it leaves any such
1078 operations to DESCRIBE-OBJECT methods.
1079 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1081 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1082 lambda lists. (thanks to David Lichteblau)
1083 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1084 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1085 (thanks to Gerd Moellmann)
1086 * fixed bug 246: increased compilation speed of long
1087 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1089 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1091 * DEFCONSTANT now throws a condition of type
1092 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1093 constant to a non-EQL value; CONTINUE and ABORT restarts
1094 respectively change and preserve the value.
1095 * fixed bug 63: The code walker, part of the implementation of CLOS,
1096 is now better at handling symbol macros.
1097 * bug fix: There is no longer an internal implementation type named
1098 CL:LENGTH. (reported by Raymond Toy)
1099 * bug fix: In macro-like defining macros/special operators the
1100 implicit block does not enclose the lambda list.
1101 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1102 enclosed in parentheses) are not suitable as type specifiers, and
1103 their use properly signals an error now.
1104 * bug fix: An argument count mismatch for a type specifier in code
1105 being compiled no longer causes an unhandled error at compile
1106 time, but signals a compile-time warning.
1107 * fixed simple vector readable printing
1108 * bug fix: DESCRIBE takes more care over whether the class
1109 precedence list slot of a class is bound before accessing it.
1110 (reported by Markus Krummenacker)
1111 * bug fix: FORMATTER can successfully compile pretty-printer format
1112 strings which use variants of the ~* directive inside.
1113 * bug fix: SEARCH now applies its TEST predicate to the elements of
1114 the arguments in the correct order. (thanks to Wolfhard Buss)
1115 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1116 in type inference. (thanks to Robert E. Brown)
1117 * bug fix: Reading in symbols with an explicit package name of ""
1118 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1119 * fixed some bugs revealed by Paul Dietz' test suite:
1120 ** NIL is now allowed as a structure slot name.
1121 ** Arbitrary numbers, not just REALs, are allowed in certain
1122 circumstances in LOOP for-as-arithmetic clauses.
1123 ** Multiple class redefinitions before slot access no longer
1124 causes a type error.
1125 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1126 association between the name and a class.
1127 ** Generic functions with non-standard method-combination and over
1128 five methods all of which return constants no longer return NIL
1129 after the first few invocations. (thanks to Gerd Moellmann)
1130 ** CALL-NEXT-METHOD with no arguments now passes the original
1131 values of the arguments, even in the presence of assignment.
1132 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1134 ** DISASSEMBLE works with closures and funcallable instances.
1135 ** ADD-METHOD now returns the generic function, not the new method.
1136 ** FIND-METHOD signals an error if the lengths of the specializers
1137 is incompatible with the generic function, even if the ERRORP
1139 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1140 which its argument is a member.
1141 ** DEFCLASS only redefines the class named by its class-name
1142 argument if that name is the proper name of the class;
1143 otherwise, it creates a new class.
1144 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1145 of the UNBOUND-SLOT condition to the name of the slot.
1146 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1147 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1148 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1149 SLOT-MAKUNBOUND in the specified fashion.
1151 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1152 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1153 cross-compilation host. As a consequence, we can now bootstrap our
1154 way up to SBCL starting with a bare gcc toolchain and human-readable
1155 source code (first the source to CLISP, then the source to SBCL).
1156 * A contributed module containing a partial implementation of the
1157 simple-streams interface has been included. (thanks to Rudi
1159 * A contributed module implementing the RFC1321 Message Digest
1160 Algorithm, known as MD5, has been included.
1161 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1162 no longer has any effect, as the code controlled by this feature
1163 has been deleted. (As far as we know, no-one has ever built using
1164 this feature, and its semantics were confused in any case).
1165 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1166 work on conditions (as required by the ANSI specification),
1167 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1168 expected behaviour on conditions. Users should note, however,
1169 that such behaviour is not required by the ANSI specification,
1170 and so use of this behaviour may render their code unportable.
1171 * fixed some bugs revealed by Paul Dietz' test suite:
1172 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1174 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1175 ** SXHASH on condition objects no longer returns NIL.
1176 ** :ALLOCATION :CLASS slots are better treated; their values are
1177 updated on class redefinition, and initforms inherited from
1178 superclasses are applied.
1179 ** REMOVE-METHOD returns its generic function argument even when
1180 no method was removed.
1181 ** SHARED-INITIALIZE now initializes the values of the requested
1182 slots, including those with :ALLOCATION :CLASS.
1183 ** ALLOCATE-INSTANCE now works on structure classes defined via
1184 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1186 ** SLOT-EXISTS-P now works on conditions, as well as structures
1188 ** MAKE-LOAD-FORM now has the required methods on
1189 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1190 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1191 keyword, and now implements the SLOT-NAMES argument.
1192 ** methods with &OPTIONAL arguments no longer allow too many
1193 arguments to be passed in the call without error.
1194 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1195 option is consistent with the required arguments of the generic
1196 function lambda list.
1197 * bug fix: REQUIRE accepts a string designator. (Thanks to
1199 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1200 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1201 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1202 * bug fix: The compiler now checks for duplicated variables in macro
1204 * bug fix: SETQ on globals returns the correct value.
1205 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1206 not a COMPILER-ERROR (followed by some other strange error on
1207 choosing the CONTINUE restart).
1208 * bug fix: make.sh and friends are now more consistent in the way that
1209 they look for GNU "make".
1211 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1212 * experimental native threads support (on x86 Linux >=2.4 only).
1213 This is not compiled in by default: you need to add :SB-THREAD to
1214 the target features. See the "Beyond ANSI" chapter of the manual
1216 * fix for longstanding nonANSIism: The old distinction between
1217 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1218 The return value from CL:FIND-CLASS is now a CLOS class, and
1219 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1220 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1221 * An interface to the MetaObject Protocol, as described in Kiczales,
1222 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1223 MIT Press, 1991, is available from the SB-MOP package.
1224 * incompatible change: the SB-PCL package should now be considered
1225 a private implementation detail, and no longer a semi-private MOP
1227 * minor incompatible change: due to rearrangement for threads, the
1228 control stack and binding stack are now allocated at arbitrary
1229 addresses instead of being hardcoded per-port. Users affected by
1230 this probably have to be doing advanced things with shared
1231 libraries, and will know who they are.
1232 * minor incompatible change: Previously, all --eval forms used were
1233 processed with READ before any of them were processed with EVAL.
1234 Now each --eval form is processed with both READ and EVAL before
1235 the next --eval form is processed. (Thus package operations like
1236 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1237 work as the user might reasonably expect.)
1238 * minor incompatible change: *STANDARD-INPUT* is now only an
1239 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1241 * minor incompatible change: Y-OR-N-P is now character-oriented,
1242 not line oriented. Also, YES-OR-NO-P now works without errors.
1243 (thanks to Antonio Martinez)
1244 * sb-aclrepl module improvements: an integrated inspector, added
1245 repl features, and a bug fix to :trace command.
1246 * Known functions, which cannot be open coded by the backend, are
1247 considered to be able to check types of their arguments. (fixing
1248 a bug report by Nathan J. Froyd)
1249 * fixed a bug in computing method discriminating functions: It is
1250 now possible to define methods specialized on classes which have
1251 forward-referenced superclasses. (thanks to Gerd Moellmann)
1252 * fixed evaluation order in optional entries (reported by Gilbert
1254 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1255 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1256 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1257 required-by-AMOP NAME argument, as well as CLASS and
1258 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1259 * fixed bug 20: DEFMETHOD can define methods using names that are
1260 not the proper names of classes to designate class specializers.
1261 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1262 Unix file descriptors, instead of blowing up. (thanks to Antonio
1264 * Garbage collection refactoring: user-visible change is that a
1265 call to the GC function during WITHOUT-GCING will not do garbage
1266 collection until the end of the WITHOUT-GCING. If you were doing
1267 this you were probably losing anyway.
1268 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1269 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1270 TYPEP the latter but not the former.
1271 * The compiler issues a full WARNING for calls to undefined functions
1272 with names from the CL package.
1273 * MAP-INTO for a vector destination is open coded. (reported by
1274 Brian Downing on c.l.l)
1275 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1276 documentation string.
1277 * fixed some bugs revealed by Paul Dietz' test suite:
1278 ** COPY-ALIST now signals an error if its argument is a dotted
1280 ** Condition slots are now accessed more correctly in the presence
1281 of multiple initargs for a given slot.
1282 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1283 exclude restarts of the same name associated with a different
1285 ** DEFCLASS of forward-referenced classes with another
1286 forward-referenced class in the superclasses list no longer
1288 ** Condition slots are now initialized once each, not multiple
1289 times. (thanks to Gerd Moellmann)
1290 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1292 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1293 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1294 arguments contain duplicated elements.
1295 ** RESTART-CASE understands local macros.
1296 ** RESTART-CASE associates exactly its own restarts with a condition.
1297 ** ENDP in safe mode checks its argument to be of type LIST.
1298 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1299 in question is unbound.
1300 ** Optimized MAKE-INSTANCE functions no longer cause internal
1301 assertion failures in the presence of duplicate initargs.
1302 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1303 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1304 propagated even in the ctor optimized implementation of
1306 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1308 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1309 * a better implementation of SXHASH on (simple) bit vectors,
1310 measured both in execution speed and in distribution of results
1311 over the positive fixnums, has been installed. Likewise, a better
1312 implementation of EQUAL for simple bit vectors is now available.
1313 * fixed CEILING optimization for a divisor of form 2^k.
1314 * fixed bug 240 (emitting extra style warnings "using the lexical
1315 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1316 by Antonio Martinez)
1317 * fixed SXHASH, giving different results for NIL depending on type
1318 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1319 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1320 variable. (found by Rolf Wester)
1321 * SBCL does not ignore type declarations for special
1322 variables. (reported by rif on c.l.l 2003-03-05)
1323 * some bug fixes in contrib/sb-aclrepl/
1324 * fixed some bugs revealed by Paul Dietz' test suite:
1325 ** a bug in the CONS type specifier, whereby the CAR and CDR
1326 types got intertwined, has been fixed;
1327 ** the type system is now able to reason about the interaction
1328 between INTEGER and RATIO types more completely;
1329 ** APPEND, [N]REVERSE and NRECONC check that those their
1330 arguments, which must be proper lists, are really so;
1331 ** An array specialized to be unable to hold elements has been
1332 implemented, as required -- yes, really -- by ANSI;
1333 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1334 on malformed property lists;
1336 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1337 * incompatible packaging change: in line with Unix convention,
1338 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1339 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1340 * REQUIRE and PROVIDE are now optionally capable of doing something
1341 useful. See the documentation string for REQUIRE.
1342 * infrastructure for a managed SBCL contrib system: contributed
1343 modules in this release include:
1344 ** the ASDF system definition facility;
1345 ** an interface to the BSD Sockets API;
1346 ** an ACL-like convenience interface to the repl;
1347 (thanks to Kevin Rosenberg)
1348 ** an implementation of ROTATE-BYTE, with efficient implementation
1350 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1351 gives a closer approximation to the right answer than previously.
1352 (thanks to Raymond Toy)
1353 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1354 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1355 optional environment arguments, as required by ANSI.
1356 * fixed bugs in other functions taking environment objects, allowing
1357 calls with an explicit NIL environment argument to be compiled
1359 * fixed bug 228: primary return values from
1360 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1361 COMPILE or FUNCTION.
1362 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1363 :TYPE will no longer signal errors on innocuous objects.
1364 * fixed bug 231b: SETQ is better at respecting type declarations in
1365 the lexical environment.
1366 * fixed a bug in DEFCLASS: classes named by symbols with no or
1367 unprintable packages can now be defined.
1368 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1369 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1370 * fixed compiler failure related to checking types of functions.
1371 (reported by Robert E. Brown)
1372 * the compiler is now much more consistent in its error-checking
1373 treatment of bounding index arguments to sequence functions: in
1374 (SAFETY 3) code, errors will be signalled in almost all cases if
1375 invalid sequence bounding indices are passed to functions defined
1376 by ANSI to operate on sequences.
1377 * fixed a bug in the build procedure: documentation of SBCL-specific
1378 packages is now preserved and available in the final Lisp image.
1379 * lifted FDEFINITION lookup out of loops in the implementation of
1380 many list operations. (thanks to Robert E. Brown)
1381 * fixed a bug in the reader: the #n# reader macro now works for
1382 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1383 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1384 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1385 E. Brown and Tony Martinez respectively)
1386 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1387 SLOT-BOUNDP: in particular, it is now able to optimize them much
1388 better, and is now not vulnerable to having packages renamed.
1389 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1390 always called when a slot is not present in an instance. (thanks
1392 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1393 longer signal an error on unreading a character following EOF on
1394 the previous constituent stream. (thanks to Tony Martinez)
1395 * fixed some bugs revealed by Paul Dietz' test suite:
1396 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1397 not just nonnegative fixnums;
1398 ** the logical bit-array operators such as BIT-AND now accept an
1399 explicit NIL for their "opt-arg" argument (to indicate a
1400 freshly-consed result bit-array);
1401 ** ELT now signals an error on an invalid sequence index in safe
1403 ** the type system is now cleverer about negations of numeric
1404 types, and consequently understands the BIGNUM and RATIO types
1406 ** the type system is now cleverer about the interaction between
1407 INTEGER and RATIO types: while bugs still remain, many more
1408 cases are accurately computed;
1409 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1410 if it is in the last clause;
1411 ** CONSTANTLY now correctly returns a side-effect-free function in
1413 ** DECLARE is no longer treated as a special-operator; in
1414 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1415 * incremented fasl file version number due to the change in the
1416 DEFSTRUCT-SLOT-DESCRIPTION structure.
1418 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1419 * minor incompatible change: code processed by the "interpreter" or
1420 EVAL now has a compilation optimization policy of (DEBUG 2)
1421 (changed from (DEBUG 1)) to improve debuggability of interactive
1422 development, and to allow the use of the debug RETURN command in
1424 * an experimental implementation of the RETURN command for the
1425 debugger has been included. (thanks to Frederik Kuivinen)
1426 * fixed bug 62: constraints were not propagated into a loop.
1427 * fixed bug in embedded calls of SORT (reported and investigated by
1429 * fixed some bugs revealed by Paul Dietz' test suite:
1430 ** printing and reading of arrays with some dimensions having
1431 length 0 (thanks to Gerd Moellmann);
1432 ** BOA constructor with &AUX argument without a default value does
1433 not cause a type error;
1434 ** CONSTANTP now returns true for all self-evaluating objects.
1436 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1437 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1438 accessors that are related by inheritance, as specified in the
1439 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1440 Valtteri Vuorikoski)
1441 * The compiler is now able to inline functions that were defined in
1442 a complex lexical environment (e.g. inside a MACROLET).
1443 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1445 * Support for the upcoming FreeBSD-5.0 release has been included.
1446 (thanks to Dag-Erling Smorgrav)
1447 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1448 effect when it is not in a toplevel context.
1449 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1450 stand a better chance of being correct. (thanks to Gerd
1452 * fixed bug in COERCE, which now signals an error on coercing a
1453 rational to a bounded real type which excludes the expected
1455 * The compiler is now able to derive types more accurately from the
1456 COERCE and COMPILE functions.
1457 * fixed bug 223: functional binding is considered to be constant
1458 only for symbols in the CL package.
1459 * fixed bug 231: SETQ did not check the type of a variable being set
1460 (reported by Robert E. Brown)
1461 * A new optimization for MAKE-INSTANCE has been included, fixing
1462 various bugs (including relating to :ALLOCATION :CLASS slots and
1463 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1465 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1466 ** As required by ANSI, LOOP now disallows anonymous collection
1467 clauses such as COLLECT I in conjunction with aggregate boolean
1468 clauses such as THEREIS (= I 1);
1469 ** LOOP now signals an error when any variable is reused in the
1470 same loop (including the potentially useful construct analogous
1471 to WITH A = 1 WITH A = (1+ A);
1472 ** IT is only a special loop symbol within the first clause of a
1473 conditional loop clause;
1474 ** LOOP with a typed iteration variable over a hashtable now
1475 signals a type error iff it should.
1476 * fixed some other bugs revealed by Paul Dietz' test suite:
1477 ** FILE-STREAM now names the class previously known as FD-STREAM;
1478 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1479 argument) no longer signals an error;
1480 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1481 of the slot symbol, rather than using the current package
1482 ((:CONC-NAME "") continues to intern the slot's name in the
1484 * incremented fasl file version number, because of the incompatible
1485 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1486 of the new implementation of DEFINE-COMPILER-MACRO.
1488 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1489 * Support for building SBCL for MIPS platforms running in
1490 little-endian mode has now been checked in, and basic
1491 functionality on said platforms verified.
1492 * minor incompatible change: PCL now records the pathname of a file
1493 in which methods and the like are defined, rather than its
1495 * minor incompatible change: TRUENAME now considers the truename of
1496 a file naming a directory to be the pathname with :DIRECTORY
1497 component indicating that directory.
1498 * minor incompatible change: a NAMED clause in the extended form of
1499 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1500 reason for the previous behaviour is unclear.
1501 * more systematization and improvement of CLOS and MOP conformance
1502 in PCL (thanks to Gerd Moellman and Pierre Mai):
1503 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1505 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1506 primary methods with no specializers;
1507 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1509 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1510 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1511 FORWARD-REFERENCED-CLASSes; error reporting on
1512 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1514 ** SXHASH on CLOS instances now uses a slot internal to the
1515 instance to return different numbers on distinct instances,
1516 while preserving the same return value through invocations of
1518 ** DEFMETHOD signals errors when methods with longer incongruent
1519 lambda lists are added to generic functions;
1520 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1521 CLASS, as specified in AMOP;
1522 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1523 on the order returned by the primary method for classes of
1524 class STANDARD-CLASS;
1525 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1526 * fixed some bugs shown by Paul Dietz' test suite:
1527 ** DOLIST puts its body in TAGBODY;
1528 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1530 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1531 value producing form;
1532 ** if more variables are given to PROGV than values, extra
1533 variables are bound and made to have no value;
1534 ** NSUBSTITUTE on list arguments gets the right answer with
1536 ** ELT signals an error of type TYPE-ERROR when the index argument
1537 is not a valid sequence index;
1538 ** LOOP signals (at macroexpansion time) an error of type
1539 PROGRAM-ERROR when duplicate variable names are found;
1540 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1541 ** FUNCALL of special-operators now cause an error of type
1543 ** PSETQ now works as required in the presence of side-effecting
1544 symbol-macro places;
1545 ** NCONC accepts any object as its last argument;
1546 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1548 ** loop-for-as-package does not require a package to be explicitely
1550 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1552 * fixed bug 166: compiler preserves "there is a way to go"
1553 invariant when deleting code.
1554 * fixed bug 172: macro lambda lists with required arguments after
1555 &REST arguments now cause an error to be signalled. (thanks to
1557 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1558 bug. (thanks to Matthew Danish)
1559 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1561 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1562 arguments are lexically rebound. (thanks to Gerd Moellmann and
1564 * fixed bug 194: error messages are now more informative when there
1565 is no primary method applicable in a call to a generic
1566 function. (thanks to Gerd Moellmann)
1567 * fixed bug in command line argument checking (thanks to Julian
1569 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1570 (thanks to Matthew Danish)
1571 * incremented fasl file version number, because of the
1572 SXHASH-related changes in the layout of CLOS data structures
1574 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1575 * minor incompatible change: The runtime (the Unix executable named
1576 "sbcl") is now much pickier about the .core files it will load.
1577 Essentially it now requires .core files to descend from the same
1578 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1579 as the runtime does. (The intent is to prevent the crashes which
1580 can occur, and which can even be reported as mysterious failures,
1581 when people patch the sources or change the build parameters
1582 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1583 sbcl and .core files.)
1584 * fixed bug: VALUES-LIST is no longer optimized away.
1585 * fixed bug 142: The FFI conversion of C string values to Lisp
1586 string values no longer conses excessively. (thanks to Nathan
1587 Froyd porting Raymond Toy's fix to CMU CL)
1588 * began to systematize and improve MOP conformance in PCL (thanks to
1589 Nathan Froyd, Gerd Moellman and Pierre Mai):
1590 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1592 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1593 ** FINALIZE-INHERITANCE is now called on class finalization;
1594 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1595 argument precedence order.
1596 * fixed bug 202: The compiler no longer fails on functions whose
1597 derived types contradict their declared type.
1598 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1599 so it can be non-toplevel.
1600 * The fasl file version number has changed (because of the new
1601 implementation of DEFMACRO).
1602 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1603 safe code, that any length requirement by their type-specifier
1604 argument is valid. The exceptions to this are described in bug
1606 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1607 functions now check the types of their inputs as required by ANSI.
1608 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1609 introduced symbol is DECLAREd to be SPECIAL.
1610 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1611 * fixed bug: :COUNT argument to sequence functions may be negative
1612 * fixed bug: body of DO-SYMBOLS may contain declarations
1613 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1614 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1615 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1616 symbol macro only once
1617 * fixed printing of call frame when argument list is unavailable
1618 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1619 * compiler no longer signals WARNING on unknown keyword
1622 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1623 * A beta-quality port to the mips architecture running Linux,
1624 based on the old CMUCL backend, has been made. It has been tested
1625 on a big-endian kernel, and works sufficiently well to be able to
1626 rebuild itself; it has not been tested in little-endian mode.
1627 * fixed an inconsistency between gencgc.c and purify.c which made
1628 dumping/loading .core files unreliable
1629 * fixed bug 120a: The compiler now deals correctly with IFs where
1630 the consequent is the same as the alternative, instead of
1631 misderiving the return type. (thanks to Alexey Dejneka)
1632 * fixed bug 113: Logical pathnames are now dumpable (the logical
1633 host is resolved at load-time, throwing an error if it is not
1635 * fixed bug 174: FORMAT's error message is slightly clearer when a
1636 non-printing character is used in a format directive.
1637 * fixed several bugs in compiler checking of type declarations, i.e.
1638 violations of the Python "declarations are assertions" principle
1639 (thanks to Alexey Dejneka)
1640 * fixed several bugs in PCL's error checking (thanks to Gerd
1642 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1644 * fixed bug in compilation of functions as first class values
1645 (thanks to Antonio Martinez-Shotton)
1646 * The compiler's handling TYPE-ERRORs which it can prove will
1647 inevitably happen at runtime has been cleaned up and corrected
1648 in several ways. (thanks to Alexey Dejneka)
1649 * improved argument type checking for various basic arithmetic
1650 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1651 lavished on them in the past that they can be compiled in many
1652 ways in different special cases
1653 * fixed bug 181: compiler checks validity of user supplied type
1655 * cleaned up code flushing in optimization: Function calls which
1656 should signal errors for safety purposes (e.g. which ANSI says
1657 should signal errors when their arguments are of incorrect type)
1658 are no longer optimized away.
1659 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1660 * incremented fasl file version number, because changes in the
1661 implementation of sequence functions like COERCE caused
1662 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1663 in old inline expansions) to become undefined. (Actually these
1664 changes were later undone, so we might very well be binary
1665 compatible with 0.7.7 after all, but leaving the version number
1666 incremented seemed like the simplest and most conservative
1669 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1670 * An alpha-quality port to the parisc architecture running Linux,
1671 based on the old CMUCL backend, has been made. This, even more so
1672 than the other backends, should be considered still a work in
1673 progress; known problems include that the Linux kernel in 64-bit
1674 mode does not propagate the correct sigcontext structure to
1675 userspace, and consequently SBCL on a parisc64 kernel will not
1677 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1678 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1679 suppressed.) Also now that the compiler is looking at declarations
1680 in the environment, it checks optimization declarations as well,
1681 and suppresses inlining when (> DEBUG SPEED).
1682 * More fixes have been made to treatment of floating point exception
1683 treatment and other Unix signals. In particular, floating point
1684 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1685 * The detection and handling of control stack exhaustion (infinite
1686 or very deeply nested recursion) has changed. Stack exhaustion
1687 detection is now done by write-protecting pages at the OS level
1688 and applies at all optimization settings; when found, a
1689 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1690 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1691 be caught using IGNORE-ERRORS.
1692 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1693 correctly when transforming recursive LABELS functions to LETs.
1694 (thanks to Alexey Dejneka)
1695 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1696 that are names of constants or global variables.
1697 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1698 alien routines with docstrings.
1699 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1700 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1702 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1703 (thanks to Eric Marsden)
1704 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1705 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1706 * Bug fix: The SPARC backend can now compile functions involving
1707 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1708 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1709 to a functions expecting a PATHNAME-DESIGNATOR.
1710 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1711 lambda lists. (thanks to Alexey Dejneka)
1712 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1713 functions so that EXPORTing the name of the class doesn't cause
1714 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1715 to Antonio Martinez for reporting this)
1716 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1717 constant-folded without failing an assertion. (thanks to Einar
1718 Floystad Dorum for reporting this)
1719 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1720 types are now dealt with more correctly by the compiler.
1721 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1722 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1723 behaviour analogous to RENAME-FILE. This puts its behaviour more
1724 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1726 * The fasl file version number has changed again. (because of the
1727 bug fix involving the names of PCL MAKE-INSTANCE functions)
1729 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1730 * bug fix: Floating point exceptions are treated much more
1731 consistently on the x86/Linux and PPC/Linux platforms.
1732 * Array initialization with :INITIAL-ELEMENT is now much faster for
1733 cases when the compiler cannot open code the array creation, but
1734 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1735 array accesses have also seen a speed increase.
1736 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1737 specified. (This was at the root of some bad interactions between
1738 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1740 * bug fix: Internal error arguments for undefined functions are now
1741 computed correctly on the PPC/Linux platform.
1742 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1743 Raymond Toy's patch for CMU CL)
1744 * Support for the Solaris 9 operating environment has been included
1745 (thanks to Daniel Merritt)
1746 * A very ugly but hopefully complete draft of the missing FFI chapter
1747 of the manual has been created by reformatting the corresponding
1748 CMU CL manual chapter into (currently very ugly and incoherent)
1749 DocBook and bringing it up to date for SBCL behavior. Thus, the
1750 manual is now essentially complete, at least by my extreme
1751 once-and-only-once standards, whereby it's acceptable to refer to
1752 the doc strings of SB-EXT functions as the primary documentation.
1753 * The fasl file version number has changed again, due to cleanup of
1754 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1755 is no longer a static symbol.)
1757 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1758 * SBCL now builds with OpenMCL (version 0.12) as the
1759 cross-compilation host; also, more progress has been made toward
1760 bootstrapping under CLISP.
1761 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1763 * bug 158 fixed: The compiler can now deal with integer loop
1764 increments different from 1; fixing this turned out also to fix
1766 * bug 169 fixed: no more bogus warnings about using lexical bindings
1767 despite the presence of perfectly good SPECIAL declarations (thanks
1768 to David Lichteblau)
1769 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1770 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1771 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1773 * bug 180 fixed: Method combination specifications no longer ignore
1774 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1775 * bug fix: Structure type predicate functions now check their argument
1776 count as they should.
1777 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1778 correctly. (thanks to Pierre Mai)
1779 * minor incompatible change: The --noprogrammer option is deprecated
1780 in favor of the new --disable-debugger option, which is very similar.
1781 (The major difference is that it takes effect at a slightly different
1782 time at startup, causing handling of errors in --sysinit and
1783 --userinit files will be affected differently.) The
1784 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1785 been added to allow this functionality to be controlled from ordinary
1786 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1787 maintainers, who might want to run non-interactive scripts to
1788 build SBCL cores which will later be used interactively.)
1789 * minor incompatible change: The LOAD function no longer, when given
1790 a wild pathname to load, loads all files matching that pathname.
1791 Instead, an error of type FILE-ERROR is signalled.
1793 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1794 * bug 147 fixed: The compiler preserves its block link/count
1795 invariants more correctly now so that it doesn't crash. (thanks
1797 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1799 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1800 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1801 no-value-for-this-character as NIL (as specified by ANSI).
1802 * HOST-NAMESTRING on physical pathnames now returns a string that is
1803 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1804 (thanks to Christophe Rhodes)
1805 * The Alpha port handles icache flushing more correctly. (thanks to
1807 * More progress has been made toward bootstrapping under CLISP. (thanks
1808 to Christophe Rhodes)
1809 * The fasl file format has changed again, because dynamic loading
1810 on OpenBSD (which has non-ELF object files) motivated some cleanups
1811 in the way that foreign symbols are transformed and passed around.
1812 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1813 is no longer treated as whitespace by the reader, but instead as
1814 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1815 |A
\7fB|, instead of A as it used to.
1817 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1818 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1819 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1820 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1821 this as of 0.7.1.45, but was left out of the previous news section
1822 (thanks to Dan Barlow)
1823 * SBCL now runs on the Solaris operating system on SPARC architectures
1824 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1825 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1826 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1827 * SPARC backend cleanups, allowing builds of cores optimized for V8
1828 and V9 SPARCS, and also emission of code targeted to a particular
1829 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1831 * SBCL is closer to bootstrapping under CLISP, thanks to various
1832 fixes by Christophe Rhodes.
1833 * The fasl file format has changed again, to allow the compiler's
1834 INFO database to support symbol macros.
1835 * The user manual (in doc/) is formatted into HTML more nicely.
1836 (thanks to coreythomas)
1837 * The system is smarter about SUBTYPEP relationships, especially
1838 those involving NOT types (including types such as ATOM which are
1839 represented internally using NOT types). Thus SUBTYPEP is less
1840 likely to return (VALUES NIL NIL) in general, and in particular
1841 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1843 * The fasl file format has changed again, because the internal
1844 representation of types now includes a new slot to support the new
1845 SUBTYPEP-of-NOT-types logic.
1846 * (not a change in the main branch of SBCL, but a related prototype
1847 which can hopefully be merged into the main branch of SBCL in the
1848 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1849 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1850 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1851 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1852 dispatch macro character combinations. (thanks to Alexey Dejneka)
1853 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1854 that superficially look like logical namestrings correctly.
1855 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1857 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1858 default supplied-p) for &optional and &key arguments. (thanks to
1861 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1862 * incompatible change: The compiler is now less aggressive about
1863 tail call optimization, doing it only when (> SPACE DEBUG) or
1864 (> SPEED DEBUG). (This is an incompatible change because there are
1865 programs which relied on the old CMU-CL-style behavior to optimize
1866 away their unbounded recursion which will now die of stack overflow.)
1867 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1868 for non-GENCGC systems has been increased to 20M (since that
1869 seems much closer to the likely performance optimum for modern
1870 systems than the old 4M value was)
1871 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1872 and *DEBUG-PRINT-LEVEL*
1873 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1874 of CMU CL's support for SPARC, and various endianness and other
1875 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1876 * new syntactic sugar for the Unix command line: --load foo.bar is now
1877 an alternate notation for --eval '(load "foo.bar")'.
1879 ** The system now detects stack overflow and handles it gracefully,
1880 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1881 optimization settings. (This is a good thing in general, and
1882 its introduction in this version should be particularly timely
1883 for anyone whose code fails because of suppression of tail
1885 ** The system now hunts for the C variable "environ" in a more
1886 devious way, to avoid segfaults when the C library version differs
1887 between compile time and run time. (thanks to Christophe Rhodes)
1888 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1889 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1890 ** The compiler no longer issues bogus style warnings for undefined
1891 classes in the same source file as the DEFCLASSes which defined
1892 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1894 ** fixes in CONDITION class precedence list for undefined function
1895 errors (thanks to Alexei Dejneka)
1896 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1897 correctly. (thanks to Dan Barlow)
1898 ** portability fixes aiming at bootstrapping under CLISP (thanks
1899 to Dave McDonald and Christophe Rhodes)
1900 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1901 ** fixes in type translation and and type inference (thanks to
1903 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1904 ** various fixes in the new ports (thanks to Dan Barlow)
1905 * several changes related to debugging:
1906 ** suppression of tail recursion, as noted above
1907 ** stack overflow detection, as noted above
1908 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1909 is now the default. (For some time encapsulation has been more
1910 reliable than the breakpoint-based :ENCAPSULATE NIL
1911 implementation, at least on X86 systems; and I just noticed that
1912 encapsulation also seems closer to the spirit of the ANSI
1915 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1917 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1918 up properly again. (There was a packaging bug in 0.7.0 which
1919 left their definitions in SB-SYS::LOAD-FOREIGN and
1920 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1921 vital for most things which interface to C-level interfaces,
1922 like extensions working with sockets or databases or
1923 Perl-compatible regexes or whatever, and the need to fix
1924 this bug is the main reason that 0.7.1 was released so
1926 ** DEFGENERIC is now choosier about the methods it redefines, so that
1927 reLOADing a previously-LOADed file containing DEFGENERICs does
1928 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1929 cycle now works as it should. (thanks to Alexey Dejneka)
1930 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1931 fixed by Christophe Rhodes. (He actually submitted this patch
1932 months ago, and I delayed until after 0.7.0.)
1933 ** Bug 111 (internal compiler confusion about runtime checks on
1934 FUNCTION types) was fixed by Alexey Dejneka.
1935 * Some internal cleanups (getting rid of variables which aren't
1936 needed now that the byte interpreter is gone) caused the fasl
1937 file format number to change again.
1939 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1940 * major incompatible change: The default fasl file extension, i.e. the
1941 default extension for files produced by COMPILE-FILE, has changed
1942 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1944 ** There are many changes in the implementation of the compiler.
1945 SBCL is now essentially a compiler-only implementation of ANSI
1946 Common Lisp. EVAL still "interprets" a few special cases, but
1947 almost all the interesting cases are handled by creating
1948 a LAMBDA expression, calling COMPILE on it, then calling
1949 FUNCALL on the result.
1950 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1951 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1952 Since the code is newer, there might still be some new bugs
1953 (though not as many as before Martin Atzmueller's fixes:-). But
1954 the new code is substantially simpler and clearer, and hopefully
1955 any remaining bugs will be simpler, less fundamental, and more
1956 fixable then the bugs in the old code.
1957 ** The revised compiler is still a little unsteady on its feet.
1959 *** The debugging information it produces (particularly the names
1960 of FUNCTION objects) is sometimes much less useful than what
1961 the old compiler produced.
1962 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1963 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1964 within a MACROLET) has been temporarily weakened.
1965 ** There are new compiler optimizations for various functions:
1966 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1967 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1968 *** the math functions TRUNCATE, FLOOR, and CEILING
1969 *** the function-of-all-trades COERCE
1970 Mostly these should be transparent, but there's one
1971 potentially-annoying problem (bug 117): when the compiler
1972 inline-expands a function and does type analysis on the result,
1973 it can create control paths which have type mismatches, and
1974 when it can't prove that those control paths aren't taken,
1975 it will issue WARNINGs about the type mismatches. This is
1976 a particular problem in practice for the new sequence functions.
1977 It's not clear how this should be fixed, and for now, a
1978 workaround is given in the entry for 117 in the BUGS file.
1979 ** (Because of the interaction between the two previous items --
1980 occasional inlining problems and new inline expansions -- some
1981 of the new sequence function optimizations won't really kick in
1982 completely until debugging information, and then inlining, are
1983 straightened out in some future version.)
1984 * minor incompatible changes:
1985 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1986 DIRECTORY no longer implicitly promotes NIL slots of its
1987 pathname argument to :WILD. In particular, when you ask for the
1988 contents of a directory (which you used to be able to do without
1989 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1990 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1991 ** changes in behavior that ANSI explicitly defines to be
1992 implementation dependent:
1993 *** The new compiler-only implementation still conforms with ANSI,
1994 but acts a little different than before. Besides the obvious
1995 changes in performance tradeoffs (that the cost per form passed
1996 to EVAL has gone up, and the cost per form executed by EVAL
1997 has gone down), the behavior of the system changes a little
1998 because there are no longer any interpreted function objects.
1999 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2000 e.g. doing COMPILE on the output of interactive DEFUN is
2002 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2004 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2005 has changed from (:CL) to NIL.
2006 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2007 e.g. #\Newline and #\Tab, don't have names specified in the
2008 ANSI Common Lisp standard, is now based on their ASCII symbolic
2009 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2010 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2011 are no longer used for output.
2012 ** changes in internal implementation constants:
2013 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2014 4 million. (If your application spends a lot of time GCing and
2015 you have a lot of RAM, you might want to experiment with
2016 increasing it even more.)
2017 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2018 However, almost all old code should still continue to work without
2019 immediate update, as SB-C-CALL is now a (deprecated) nickname
2021 ** Old operator names in the style DEF-FOO are now deprecated in
2022 favor of new corresponding names DEFINE-FOO, for consistency with
2023 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2024 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2025 internal symbols, but a few supported extensions like
2026 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2027 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2028 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2029 etc. as you get deeper into recursive calls to the debugger
2030 command loop, instead of the old "5]", "5]]", "5]]]"
2031 sequence. (I was motivated to do this when squabbles between
2032 ILISP and SBCL left me very deeply nested in the debugger. In the
2033 short term, this change will probably provoke more ILISP/SBCL
2034 squabbles, but hopefully it will be an improvement in the long run.)
2035 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2036 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2037 function, since declaiming return types involving aliens is
2038 (1) annoyingly messy to do by hand and (2) vital to efficient
2039 compilation of code which calls such functions.
2040 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2041 longer reexported by the SB-EXT package. They're solely useful
2042 for alien code, so it seems more logical that you should get
2043 them from the SB-ALIEN package, not in SB-EXT.
2044 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2045 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2046 features. Instead, the code that they used to control is always
2047 built into the system.
2048 * many other bug fixes
2049 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2050 advantage of the new EVAL-WHEN stuff and to clean them up in
2051 general, and they are now more ANSI-compliant in a number of
2052 ways. Martin Atzmueller is responsible for a lot of this.
2053 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2055 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2056 *** correct ERROR type for various file operations
2057 *** some fixes for Lisp streams
2058 *** DEFMETHOD syntax checking
2059 *** changing old weird representation of debug information as
2060 strings (which, among their other deficiencies, don't transform
2061 correctly when you rename packages, and don't change their
2062 print representation when you change things like *PACKAGE*
2063 and *PRINT-LENGTH*) to symbols and lists of symbols
2064 He also made several improvements and fixed several bugs in DESCRIBE.
2065 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2067 *** misbehavior of WRITE-STRING/WRITE-LINE
2068 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2069 and several other LOOP problems as well
2070 *** DIRECTORY when similar filenames are present
2071 *** DEFGENERIC with :METHOD options
2072 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2073 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2074 *** argument ordering in FIND with :TEST option
2075 *** mishandled package designator argument in APROPOS-LIST
2076 *** various problems in the backquote readmacro
2077 *** a bug in APROPOS
2078 *** probably some others that I'm not describing very well here,
2079 since the CVS log documents them by reference to sbcl-devel
2080 messages, and the SourceForge archives aren't working well.:-(
2081 ** Dan Barlow improved the Alpha port (and is making progress on the
2082 PPC port, for those of you who think different).
2083 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2084 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2085 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2086 continues to work on the SPARC port (for those of you in a position
2087 to look down upon our little PC-compatible boxes from a great height).
2088 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2089 and uses that copy, rather than the current dynamic value, when
2090 it's trying to decide whether to truncate output. Thus e.g.
2091 (let ((*print-lines* 50))
2092 (pprint-logical-block (stream nil)
2094 (let ((*print-lines* 8))
2095 (print (aref possiblybigthings i) stream)))))
2096 should now truncate the logical block only at 50 lines, instead of
2097 often truncating it at 8 lines, as it did before.
2098 * The doc/cmucl/ directory, containing old CMU CL documentation
2099 from the time of the fork, is no longer part of the base system.
2100 SourceForge has shut down its anonymous FTP service, and with it
2101 my original plan for distributing the old CMU CL documentation
2102 there. For now, if you need these files you can download an old
2103 SBCL source release and extract them from it.
2104 * The fasl file version number changed again, for dozens of reasons,
2105 some of which are apparent above.
2107 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2108 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2109 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2110 patch, so that DISASSEMBLE output is much nicer.
2111 * The code in the SB-PROFILE package now seems reasonably stable.
2112 I still haven't decided what the final interface should look like
2113 (I'd like PROFILE to interact cleanly with TRACE, since both
2114 facilities use function encapsulation) but if you have a need
2115 for profiling now, you can probably use it successfully with
2116 the current CMU-CL-style interface.
2117 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2118 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2119 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2120 link now returns the dangling link itself, and for similar
2121 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2122 link itself. (In these cases the old code signalled an error and
2123 looped endlessly, respectively.) Thus, DIRECTORY now works even
2124 in the presence of dangling and cyclic symbolic links.
2125 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2126 is now a supported extension again, since the consensus on
2127 sbcl-devel was that it can be useful for ordinary development
2128 work, not just for debugging SBCL itself.
2129 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2130 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2131 that currently-defined functions might be redefined later with
2132 different return types.
2133 * Hash tables can be printed readably, as inspired by CMU CL code
2134 of Eric Marsden and SBCL code of Martin Atzmueller.
2135 * better error handling in CLOS method combination, thanks to
2136 Martin Atzmueller porting Pierre Mai's CMU CL patches
2137 * more overflow fixes for >16Mbyte I/O buffers
2138 * A bug in READ has been fixed, so that now a single Ctrl-D
2139 character suffices to cause end-of-file on character streams.
2140 In particular, now you only need one Ctrl-D at the command
2141 line (not two) to exit SBCL.
2142 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2144 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2145 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2146 does the right thing.
2147 * The implementation of some type tests, especially for CONDITION
2148 types, is now tidier and maybe faster, due to CMU CL code
2149 originally by Douglas Crosher, ported by Martin Atzmueller.
2150 * Some math functions have been fixed, and there are new
2151 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2152 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2153 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2154 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2155 likely to be built into sbcl-0.7.0.)
2156 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2157 CL, ported to SBCL by Martin Atzmueller)
2158 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2159 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2160 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2161 * There's a new slam.sh hack to shorten the edit/compile/debug
2162 cycle for low-level changes to SBCL itself, and a new
2163 :SB-AFTER-XC-CORE target feature to control the generation of
2164 the after-xc.core file needed by slam.sh.
2165 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2166 COMPILE-FILE is no longer supported, so that now every function
2167 gets an entry point, so that block compilation looks a little
2168 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2169 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2170 returns the number of bytes consed since the system started,
2171 rather than the number consed since the first time the function
2172 was called. (The new definition parallels ANSI functions like
2173 CL:GET-INTERNAL-RUN-TIME.)
2174 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2175 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2176 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2177 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2178 * Fasl file version numbers are now independent of the target CPU,
2179 since historically most system changes which required version
2180 number changes have affected all CPUs equally. Similarly,
2181 the byte fasl file version is now equal to the ordinary
2184 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2185 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2186 is no longer recognized. I apologize for this, because it was
2187 listed in SB-EXT as a supported extension, but I found that
2188 its existing behavior was poorly specified, as well as incorrectly
2189 specified, and it looked like too much of a mess to straighten it
2190 out. I have enough on my hands trying to get ANSI stuff to work..
2191 * many patches ported from CMU CL by Martin Atzmueller, with
2192 half a dozen bug fixes in pretty-printing and the debugger, and
2193 half a dozen others elsewhere
2194 * fixed bug 13: Floating point infinities are now supported again.
2195 They might still be a little bit flaky, but thanks to bug reports
2196 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2197 as flaky as they were.
2198 * The --noprogrammer command line option is now supported. (Its
2199 behavior is slightly different in detail from what the old man
2200 page claimed it would do, but it's still appropriate under the
2201 same circumstances that the man page talks about.)
2202 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2203 are now supported, and enabled by default. Thus, the compiler can
2204 handle many floating point and complex operations much less
2205 inefficiently. (Thus e.g. you can implement a complex FFT
2207 * The compiler now detects type mismatches between DECLAIM FTYPE
2208 and DEFUN better, and implements CHECK-TYPE more correctly, and
2209 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2210 thanks to patches from Martin Atzmueller.
2211 * various fixes to make the cross-compiler more portable to
2212 ANSI-conforming-but-different cross-compilation hosts (notably
2213 Lispworks for Windows, following bug reports from Arthur Lemmens)
2214 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2215 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2216 fixed thanks to Pierre Mai's CMU CL patches.
2217 * fixes to keep the system from overflowing internal counters when
2218 it tries to use i/o buffers larger than 16M bytes
2219 * fixed bug 45a: Various internal functions required to support
2220 complex special functions have been merged from CMU CL sources.
2221 (When I was first setting up SBCL, I misunderstood a compile-time
2222 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2223 * improved support for type intersection and union, fixing bug 12
2224 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2225 more obscure bugs as well
2226 * some steps toward byte-compiling non-performance-critical
2227 parts of the system, courtesy of patches from Martin Atzmueller
2228 * Christophe Rhodes has made some debian packages of sbcl at
2229 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2230 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2231 stable, but are nonetheless usable. When he's ready, I'd be happy
2232 to add them to the SourceForge "File Releases" section. (And if
2233 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2234 * new fasl file format version number (because of changes in
2235 internal representation of (OR ..) types to accommodate the new
2236 support for (AND ..) types, among other things)
2238 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2239 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2241 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2243 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2244 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2245 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2246 * DESCRIBE now works on structure objects again.
2247 * Most function call argument type mismatches are now handled as
2248 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2249 know whether the function will be redefined before the call is
2250 executed. (The compiler could flag local calls with full WARNINGs,
2251 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2252 it doesn't keep track of enough information to know whether calls
2253 are local in this sense.)
2254 * Compiler output is now more verbose, with messages truncated
2255 later than before. (There should be some supported way for users
2256 to override the default verbosity, but I haven't decided how to
2257 provide it yet, so this behavior is still controlled by the internal
2258 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2259 src/compiler/ir1util.lisp.)
2260 * Fasl file format version numbers have increased again, because
2261 support for the Gray streams extension changes the layout of the
2262 system's STREAM objects.
2263 * The Gray subclassable streams extension now works, thanks to a
2264 patch from Martin Atzmueller.
2265 * The full LOAD-FOREIGN extension (not just the primitive
2266 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2267 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2268 but like most other programs, it defaults to copying the Unix
2269 environment from the original process instead of starting the
2270 new process in an empty environment.
2271 * Extensions which manipulate the Unix environment now support
2272 an :ENVIRONMENT keyword option which doesn't smash case or
2273 do other bad things. The CMU-CL-style :ENV option is retained
2274 for porting convenience.
2275 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2276 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2278 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2280 * A patch from Martin Atzmueller seems to have solved the SIGINT
2281 problem, and as far as we know, signal-handling now works cleanly.
2282 (If you find any new bugs, please report them!)
2283 * The system no longer defaults Lisp source file names to types
2284 ".l", ".cl", or ".lsp", but only to ".lisp".
2285 * The compiler no longer uses special default file extensions for
2286 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2287 seems to expect a single default extension for all compiled code,
2288 and there's no compelling reason to try to stretch the standard
2289 to allow two different extensions.) Instead, byte-compiled files
2290 default to the same extension as native-compiled files.
2291 * Fasl file format version numbers have increased again, because
2292 a rearrangement of internal implementation packages made some
2293 dumped symbols in old fasl files unreadable in new cores.
2294 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2295 many fewer weird special cases.
2296 * Bug #17 (differing COMPILE-FILE behavior between logical and
2297 physical pathnames) has been fixed, and some related misbehavior too,
2298 thanks to a patch from Martin Atzmueller.
2299 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2300 by Tim Moore, ported to SBCL by Martin Atzmueller.
2301 * Martin Atzmueller fixed several filesystem-related problems,
2302 including bug #36, in part by porting CMU CL patches, which were
2303 written in part by Paul Werkowski.
2304 * More compiler warnings in src/runtime/ are gone, thanks to
2305 more patches from Martin Atzmueller.
2306 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2309 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2311 * DESCRIBE now works on CONDITION objects.
2312 * The debugger now handles errors which arise when trying to print
2313 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2315 * The build system now uses an additional file, customize-target-features.lisp,
2316 to allow local modifications to the target *FEATURES* list. (The point of
2317 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2318 debugging features enabled, without having to worry about propagating it
2319 into everyone's system when I do a "cvs update".) When no
2320 customize-target-features.lisp file exists, the target *FEATURES* list
2321 should be constructed the same way as before.
2322 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2323 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2324 warn about behavior which is undefined under the ANSI spec. Note: This
2325 is specified by ANSI, but it's not very popular with programmers.
2326 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2327 macro in the SBCL sources for an example of a workaround which you
2328 might use to make portable ANSI-standard code which does what you want.
2329 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2330 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2331 when it's used as a non-toplevel form. (This is required in order
2332 to implement the DEFCONSTANT-EQX macro.)
2333 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2334 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2335 funny things, due to bugs in the implementation of EVAL-WHEN
2336 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2337 non-toplevel DEFCONSTANTs are uncommon.)
2338 * The core file version number and fasl file version number have been
2339 incremented, because the old noncompliant DEFCONSTANT behavior involved
2340 calling functions which no longer exist, and because I also took the
2341 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2342 * fixed bug 1 (error handling before read-eval-print loop starts), and
2343 redid debugger restarts and related debugger commands somewhat while
2345 ** The QUIT debugger command is gone, since it did something
2346 rather different than the SB-EXT:QUIT command, and since it never
2347 worked properly outside the main toplevel read/eval/print loop.
2348 Invoking the new TOPLEVEL restart provides the same functionality.
2349 ** The GO debugger command is also gone, since you can just invoke
2350 the CONTINUE restart directly instead.
2351 ** The TOP debugger command is also gone, since it's redundant with the
2352 FRAME 0 command, and since it interfered with abbreviations for the
2354 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2356 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2357 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2358 some porting work by Martin Atzmueller)
2359 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2360 with a boatload of patches which he ported to SBCL. Now that those
2362 ** The system tries to make sure that its low-priority messages
2363 are prefixed by semicolons, to help people who like to use
2364 syntax highlighting in their ILISP buffer. (This patch
2365 was originally due to Raymond Toy.)
2366 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2367 patches originally written by Raymond Toy.
2368 ** The compiler understands coercion between single-value and
2369 multiple-VALUES type expressions better, getting rid of some very
2370 weird behavior, thanks to patches originally by Robert MacLachlan
2371 and Douglas Crosher.
2372 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2373 lambda lists, thanks to a patch originally by Pierre Mai.
2374 ** The system no longer bogusly warns about "abbreviated type
2376 ** The compiler gets less confused by inlining and RETURN-FROM,
2377 thanks to some patches originally by Tim Moore.
2378 ** The system no longer hangs when dumping circular lists to fasl
2379 files, thanks to a patch originally from Douglas Crosher.
2380 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2381 undefined function error.
2382 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2383 in structure slot initforms) for now, documented workaround instead:-|
2384 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2385 * fixed bug 5: added stubs for various Gray stream functions called
2386 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2387 installed, at least appropriate type errors are generated
2388 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2389 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2390 consistently in DEFMETHOD forms.
2391 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2392 it doesn't seem to affect SBCL after all
2393 * The C runtime system now builds with better optimization and many
2394 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2396 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2398 * The system is now under CVS at SourceForge (instead of the
2399 CVS repository on my home machine).
2400 * The new signal handling code has been tweaked to treat register
2401 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2402 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2403 downstream, e.g. in debug-int.lisp, has implicit dependencies
2404 on the unsignedness of integer representation of machine words,
2405 and that caused the system to bomb out with infinite regress
2406 when trying to recover from type errors involving signed values,
2407 e.g. (BUTLAST '(1 2 3) -1).)
2408 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2409 (This was one of the bugs Peter Van Eynde reported back in July.)
2410 * The system now uses code inspired by Colin Walters' O(N)
2411 implementation of MAP (from the cmucl-imp@cons.org mailing
2412 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2413 inline the MAP operation, and there is more than one
2414 sequence argument to the MAP call (so that it can't just
2415 do ETYPECASE once and for all based on the type of the
2416 single sequence argument). (The old non-inline implementation
2417 of the general M-argument sequence-of-length-N case required
2418 O(M*N*N) time when any of the sequence arguments were LISTs.)
2419 * The QUIT :UNIX-CODE keyword argument has been renamed to
2420 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2421 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2423 * Raymond Wiker's patches to port dynamic loading from Linux to
2424 FreeBSD have been added.
2425 * The BUGS file is now more nearly up to date, thanks in large part
2426 to Martin Atzmueller's review of it.
2427 * The debugger now flushes standard output streams before it begins
2428 its output ("debugger invoked" and so forth).
2429 * The core version number and fasl file version number have both
2430 been incremented, because of incompatible changes in the layout
2432 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2433 used to not be called for a saved Lisp image.)
2434 * Martin Atzmueller's version of a patch to fix a compiler crash,
2435 as posted on sbcl-devel 13 September 2000, has been installed.
2436 * Instead of installing Martin Atzmueller's patch for the
2437 compiler transform for SUBSEQ, I deleted the compiler transform,
2438 and transforms for some similar consing operations.
2439 * A bug in signal handling which kept TRACE from working on OpenBSD
2441 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2442 away by constant folding
2443 * The system now defines its address space constants in one place
2444 (in the Lisp sources), and propagates them automatically elsewhere
2445 (through GENESIS and the sbcl.h file). Therefore, patching the
2446 address map is less unnecessarily tedious and error-prone. The
2447 Lisp names of address space constants have also been systematized.
2448 * CVS tags like dollar-Header-dollar have been removed from
2449 the sources, because they have never saved me trouble and
2450 they've been source of trouble working with patches and other
2451 diff-related operations.
2452 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2453 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2455 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2457 * The system has been ported to OpenBSD.
2458 * The system now compiles with a simple "sh make.sh" on the systems
2459 that it's supported on. I.e., now you no longer need to tweak
2460 text in the target-features.lisp-expr and symlinks in src/runtime/
2461 by hand, the make.sh takes care of it for you.
2462 * The system is no longer so grossly inefficient when compiling code
2463 involving vectors implemented as general (not simple) vectors (VECTOR T),
2464 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2465 which dares to use the various sequence functions on non-simple
2466 vectors, takes less of a performance hit.
2467 * There is now a primitive type predicate VECTOR-T-P
2468 to test for the (VECTOR T) type, so that e.g.
2469 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2470 can now be compiled with some semblance of efficiency. (The old code
2471 turned the type declaration into a full call to %TYPEP at runtime!)
2472 * AREF on (VECTOR T) is still not fast, since it's still compiled
2473 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2474 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2475 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2476 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2477 without making full calls to SUBTYPEP at runtime.
2478 (Some analogous efficiency issues for non-simple vectors specialized to
2479 element types other than T, or for non-simple multidimensional arrays,
2480 have not been addressed. They could almost certainly be handled the
2481 same way if anyone is motivated to do so.)
2482 * The changes in array handling break binary compatibility, so
2483 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2484 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2485 instead of (VALUES T T).
2486 * By following the instructions that Dan Barlow posted to sbcl-devel
2487 on 2 July 2000, I was able to enable primitive dynamic object
2488 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2489 functionality is not implemented (since it calls ld to resolve
2490 library references automatically, requiring RUN-PROGRAM for its
2491 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2492 try to resolve library references) is now supported.
2493 * The system now flushes the standard output streams when it terminates,
2494 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2495 them at several other probably-convenient times, e.g. in each pass of
2496 the toplevel read-eval-print loop, and after evaluating a form given
2497 as an "--eval" command-line option. (These changes were motivated by a
2498 discussion of stream flushing issues on cmucl-imp in August 2000.)
2499 * The source transform for TYPEP of array types no longer assumes
2500 that an array whose element type is a not-yet-defined type
2501 is implemented as an array of T, but instead punts, so that the
2502 type will be interpreted at runtime.
2503 * There is now some support for cross-compiling in make.sh: each of
2504 the phases of make.sh has its own script. (This should be transparent
2505 to people doing ordinary, non-cross-compile builds.)
2506 * Since my laptop doesn't have hundreds of megabytes of memory like
2507 my desktop machine, I became more motivated to do some items on
2508 my to-do list in order to reduce the size of the system a little:
2509 ** Arrange for various needed-only-at-cold-init things to be
2510 uninterned after cold init. To support this, those things have
2511 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2512 symbols with such names are now uninterned after cold init).
2513 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2514 fasl files for cold load.
2515 ** Remove the old compiler structure pooling code (which used to
2516 be conditional on the target feature :SB-ALLOC) completely.
2517 ** Redo the representation of some data in cold init to be more compact.
2518 (I also looked into supporting byte compiled code at bootstrap time,
2519 which would probably reduce the size of the system a lot, but that
2520 looked too complicated, so I punted for now.)
2521 * The maximum signal nesting depth in the src/runtime/ support code has
2522 been reduced from 4096 to 256. (I don't know any reason for the very
2523 large old value. If the new smaller value turns out to break something,
2524 I'll probably just bump it back up.)
2525 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2527 * Many, many bugs reported by Peter Van Eynde have been added to
2528 the BUGS list; some have even been fixed.
2529 * While enabling dynamic object file loading, I tried to make the
2530 code easier to understand, renaming various functions and variables
2531 with less ambiguous names, and changing some function calling
2532 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2533 * While trying to figure out how to do the OpenBSD port, I tried to
2534 clean up some of the code in src/runtime/. In particular, I dropped
2535 support for non-POSIX signal handling, added various comments,
2536 tweaked the code to reduce the number of compilation warnings, and
2537 renamed some files to increase consistency.
2538 * To support the new automatic configuration functionality in make.sh,
2539 the source file target-features.lisp-expr has been replaced with the
2540 source file base-target-features.lisp-expr and the machine-generated
2541 file local-target-features.lisp-expr.
2542 * fixed a stupid quoting error in make.sh so that using CMU CL
2543 "lisp -batch" as cross-compilation host works again
2545 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2547 * DESCRIBE no longer tries to call itself recursively to describe
2548 bound/fbound values, so that it no longer fails on symbols which are
2549 bound to themselves (like keywords, T, and NIL).
2550 * DESCRIBE now works on generic functions.
2551 * The printer now prints less-screwed-up representations of closures
2552 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2553 * A private symbol is used instead of the :EMPTY keyword previously
2554 used to mark empty slots in hash tables. Thus
2555 (DEFVAR *HT* (MAKE-HASH-TABLE))
2556 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2557 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2558 now does what ANSI says that it should. (You can still get
2559 similar noncompliant behavior if bang on the hash table
2560 implementation with all the symbols you get back from
2561 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2562 This breaks binary compatibility, since tests for equality to
2563 :EMPTY are wired into things like the macroexpansion of
2564 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2566 * There's now a minimal placeholder implementation for CL:STEP,
2567 as required by ANSI.
2568 * An obscure bug in the interaction of the normal compiler, the byte
2569 compiler, inlining, and structure predicates has been patched
2570 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2571 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2573 * Missing ordinary arguments in a macro call are now detected even
2574 when the macro lambda list contains &KEY or &REST.
2575 * The debugger no longer complains about encountering the top of the
2576 stack when you type "FRAME 0" to explicitly instruct it to go to
2577 the top of the stack. And it now prints the frame you request even
2578 if it's the current frame (instead of saying "You are here.").
2579 * As specified by ANSI, the system now always prints keywords
2580 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2582 * The default initial SIZE of HASH-TABLEs is now smaller.
2583 * Type information from CLOS class dispatch is now propagated
2584 into DEFMETHOD bodies, so that e.g.
2585 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2587 is now basically equivalent to
2588 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2589 (DECLARE (TYPE SINGLE-FLOAT X))
2591 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2592 operation, without having to do run-time type dispatch.
2593 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2594 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2595 * Since I don't seem to be making big file reorganizations very often
2596 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2597 is overflowing my ability to conveniently back them up), I've finally
2598 checked the system into CVS. (The CVS repository is on my home system,
2599 not at SourceForge -- putting it on SourceForge might come later.)
2600 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2601 high-level GC-NOTIFY-FOO functions send their output. (There's
2602 still very little control of where low-level verbose GC functions
2603 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2604 less than it used to -- the GC-NOTIFY-FOO functions are now under
2605 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2606 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2607 in only one place in the source code, and propagates it automatically
2608 everywhere that it's needed. Thus e.g. when I bump the version from
2609 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2610 * The C source files now include boilerplate legalese and documentation
2611 at the head of each file (just as the Lisp source files already did).
2612 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2613 to his page will be replaced with a link to his new CLiki service.
2615 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2617 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2618 * The build process now looks for GNU make under the default name "gmake",
2619 instead of "make" as it used to. If GNU make is not available as "gmake"
2620 on your system, you can change this default behavior by setting the
2621 GNUMAKE environment variable.
2622 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2623 can build without error under CMU CL.
2625 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2627 * There is now a partial SBCL user manual (with some new text and some
2628 text cribbed from the CMU CL manual).
2629 * The beginnings of a profiler have been added (starting with the
2630 CMU CL profiler and simplifying and cleaning up). Eventually the
2631 main interface should be through the TRACE macro, but for now,
2632 it's still accessed through vaguely CMU-CL-style functions and macros
2633 exported from the package SB-PROFILE.
2634 * Some problems left over from porting CMU CL to the new
2635 cross-compilation bootstrap process have been cleaned up:
2636 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2637 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2638 part when getting rid of the compiler *BACKEND* stuff.)
2639 ** The value of *NULL-TYPE* was screwed up, because it was
2640 being initialized before the type system knew the final
2641 definition of the 'NULL type. This screwed up several key
2642 optimizations in the compiler, causing inefficiency in all sorts
2643 of places. (I found it because I wanted to understand why
2644 GET-INTERNAL-RUN-TIME was consing.)
2645 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2646 PROCLAIM FTYPE information. Unfortunately this broke binary
2647 compatibility again, since now the forms output by DEFGENERIC
2648 to refer to functions which didn't exist in 0.6.3.
2649 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2650 can use the new (as of 0.6.3) transform for SOME into MAP into
2652 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2653 values to (INTEGER 0 1000000), so that the time code will no longer
2654 occasionally get blown up by Linux returning 1000000 microseconds
2655 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2656 its output conform to the ANSI spec. (Alas, this makes its output
2657 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2658 * A full call to MAP NIL with a single sequence argument no longer conses.
2659 * fixes to problems pointed out by Martin Atzmueller:
2660 * The manual page no longer talks about multiprocessing as though
2661 it were currently supported.
2662 * The ILISP support patches have been removed from the distribution,
2663 because as of version 5.10.1, ILISP now supports SBCL without us
2664 having to maintain patches.
2665 * added a modified version of Raymond Toy's recent CMU CL patch for
2666 EQUALP comparison of HASH-TABLE
2668 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2670 * The system still can't cross-compile itself with
2671 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2672 entails), but at least it can compile more of itself that way
2673 than it used to be able to, and various buglets which were uncovered
2674 by trying to cross-compile itself that way have now been fixed.
2675 * This release breaks binary compatibility again. This time
2676 at least I've incremented the FASL file format version to 2, so that the
2677 problem can be detected reliably instead of just causing weird errors.
2678 * various new style warnings:
2679 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2680 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2681 ** using the lexical binding of a variable named in the *FOO* style
2682 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2683 as specified by ANSI.
2684 * *RANDOM-STATE* is no longer automatically initialized from
2685 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2686 default behavior of the system is to repeat its behavior every time
2687 it's run. If you'd like to change this behavior, you can always
2688 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2689 old convention there was no comparably easy way to get the system to
2690 repeat its behavior every time it was run.
2691 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2692 FTYPE declarations has been removed, in favor of their ANSI
2693 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2694 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2695 the types of their sequence arguments can be determined at compile time.
2696 This is done through a new open code expansion for MAP which eliminates
2697 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2698 argument types can be determined at compile time.
2699 * The optimizer now transforms COERCE into an identity operation when it
2700 can prove that the coerced object is already of the correct type. (This
2701 can be a win for machine generated code, including the output of other
2702 optimization transforms, such as the MAP transform above.)
2703 * Credit information has been moved from source file headers into CREDITS.
2704 * Source file headers have been made more standard.
2705 * The CASE macro now compiles without complaining even when it has
2708 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2710 * (Note that the way that the PCL macroexpansions were rewritten
2711 to accommodate the change in DEFGENERIC below breaks binary
2712 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2713 not run under sbcl-0.6.2. Once we get out of alpha releases,
2714 i.e. hit release 1.0.0, we'll probably try to maintain binary
2715 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2716 and sbcl-1.4.4. Until then, however, it might be fairly common
2717 for maintenance releases to break binary compatibility.)
2718 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2720 * The reporting of unhandled signals has been changed to print some
2721 explanatory text as well as the report form. (Previously only
2722 the report form was printed.)
2723 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2724 it defines, so that the compiler no longer issues undefined function
2725 warnings for compiled-but-not-yet-loaded generic functions.
2726 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2727 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2728 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2729 section of the ANSI spec are supported.
2730 * The "" nickname for the "KEYWORD" package has been removed.
2731 The reader still handles symbol tokens which begin with a package marker
2732 as keywords, but it doesn't expose its mechanism for doing so in the
2733 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2734 * The system now issues STYLE-WARNINGs for contradictory TYPE
2735 proclamations. (Warnings for contradictory FTYPE proclamations would
2736 be nice too, but those can't be done usefully unless the type system
2737 is made smarter about FUNCTION types.)
2738 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2739 systematized, so that "*target-*.lisp is supposed to exist only on the
2740 target and imply that there's a related file which exists on the
2741 host, and *host-*.lisp is supposed to exist only on the host and imply
2742 that there's a related file which exists on the target. This involves a
2743 lot of renaming. Hopefully the acute confusion caused by the renaming
2744 will be justified by the reduction in chronic confusion..
2745 ** runtime-type.lisp -> early-target-type.lisp
2746 ** target-type.lisp -> late-target-type.lisp
2747 ** early-host-format.lisp -> early-format.lisp
2748 ** late-host-format.lisp -> late-format.lisp
2749 ** host-error.lisp -> misc-error.lisp
2750 ** early-error.lisp -> early-target-error.lisp
2751 ** late-error.lisp -> late-target-error.lisp
2752 ** host-defboot.lisp -> early-defboot.lisp
2753 ** code/misc.lisp -> code/target-misc.lisp
2754 ** code/host-misc.lisp -> code/misc.lisp
2755 ** code/numbers.lisp -> code/target-numbers.lisp
2756 ** code/early-numbers.lisp -> numbers.lisp
2757 ** early-host-type.lisp -> early-type.lisp
2758 ** late-host-type.lisp -> late-type.lisp
2759 ** host-typep.lisp -> typep.lisp
2760 ** load.lisp -> target-load.lisp
2761 ** host-load.lisp -> load.lisp
2762 ** host-disassem.lisp -> disassem.lisp
2763 ** host-insts.lisp -> insts.lisp
2764 ** byte-comp.lisp -> target-byte-comp.lisp
2765 ** host-byte-comp.lisp -> byte-comp.lisp
2766 ** host-signal.lisp -> signal.lisp
2767 ** host-defstruct.lisp -> defstruct.lisp
2768 ** late-target-type.lisp -> deftypes-for-target.lisp
2769 Furthermore, several other previously target-only files foo.lisp (e.g.
2770 hash-table.lisp and random.lisp) have been split into a target-and-host
2771 foo.lisp file and a target-only target-foo.lisp file, with their key type
2772 definitions in the target-and-host part, so that the cross-compiler will
2773 know more about target types.
2774 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2775 gone away. In their place are various *BACKEND-FOO* variables
2776 corresponding to the slots of the old structure.
2777 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2778 into the target SBCL has been fixed.
2779 * The chill.lisp system for loading cold code into a running SBCL
2781 * Support for the CMU CL "scavenger hook" extension has been removed.
2782 (It was undocumented and unused in the CMU CL sources that SBCL was
2783 derived from, and stale in sbcl-0.6.1.)
2784 * Various errors in the cross-compiler type system were detected
2785 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2786 (enabling various consistency checks). Many of them were fixed,
2787 but some hard problems remain, so the compiler is back to
2788 running without *TYPE-SYSTEM-INITIALIZED* for now.
2789 * As part of the cross-compiler type system cleanup, I implemented
2790 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2791 * I have started adding UNCROSS calls throughout the type system
2792 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2793 on cross-compiler input files will be able to go away, and various
2795 * CONSTANTP now returns true for quoted forms (as explicitly required
2798 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2800 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2801 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2802 (MAKE-LIST -1). In the longer term, it ought to become true
2803 that declarations are assertions even at SAFETY 1. For now, it's not
2804 quite true even at SAFETY 3, but it's at least more nearly true..
2805 (Note that this change seems to increases the size of the system by
2806 O(5%) and to decrease the speed of the compiler by 20% or more.)
2807 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2808 for the problem of printing dozens of lines of distracting information
2809 about low-level system machinery as part of the top stack frame
2810 on entry to the debugger when an undefined function was called.
2811 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2812 is not reset to COMMON-LISP-USER.
2813 * Compilation of stuff related to dyncount.lisp has been made conditional
2814 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2815 smaller. The various dyncount-related symbols have been moved into
2816 a new "SB-DYNCOUNT" package.
2817 * tty-inspect.lisp has been renamed to inspect.lisp.
2818 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2819 feature has gone away. (When we eventually port to other flavors of
2820 libc and/or Unix, we'll try to make the differences between flavors
2821 invisible at the user level.)
2822 * Various other *FEATURES* tags, and/or their associated conditionals,
2823 have been removed if obsolescent, or given better documentation, or
2824 sometimes given more-mnemonic names.
2826 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2828 * tidied up "make.sh" script
2829 * tidied up system directory structure
2830 * better "clean.sh" behavior
2831 * added doc/FOR-CMUCL-DEVELOPERS
2832 * many many small tweaks to output format, e.g. removing possibly-confusing
2833 trailing #\. character in DESCRIBE-INSTANCE
2834 * (EQUALP #\A 'A) no longer signals an error.
2835 * new hashing code, including EQUALP hashing
2836 * tidied up Lisp initialization and toplevel
2837 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2838 * command line argument processing
2839 * added POSIX-GETENV function to deal with Unix-ish environment variables
2840 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2841 terminating SBCL on EOF
2842 * non-verbose GC by default
2843 * There is no more "sbcl" shell script; the sbcl file is now the C
2844 runtime executable (just like CMU CL).
2845 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2847 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2848 symbol and package information as Lisp native symbol and package objects
2849 instead of strings naming symbols and strings naming packages. This way,
2850 whenever packages are renamed (as in warm init), debug information is
2851 transformed along with everything else.
2852 * tweaked the optimization policy declarations which control the building
2853 of SBCL itself. Now, among other things, the system no longer saves
2854 source location debugging information. (This helps two problems at once
2855 by reducing SBCL size and by keeping SBCL from trying to look for its
2856 sources -- which may not exist -- when reporting errors.)
2857 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2858 debugging and testing purposes
2859 * cleaned up printing, making the printer call PRINT-OBJECT for
2860 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2861 methods, giving nearly-ANSI behavior
2862 * converted almost all special variables to use *FOO* naming convention
2863 * deleted PARSE-TIME functionality, since it can be done portably
2864 * moved some files out of cold init into warm init
2865 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2867 * regularized formatting of source files
2868 * added an install.sh script
2869 * fixed ridiculous memory usage of cross-compiler by making
2870 compiler/alloc.lisp not try to do pooling unless it can hook
2871 itself into the GC of the cross-compilation host. Now the system
2872 builds nicely on my old laptop.
2873 * added :SB-ALLOC in target-features.lisp-expr
2874 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2875 was not implemented)
2876 * re-did condition handling and note reporting in the compiler. Notes
2877 are no longer handled by signalling conditions. Style warnings
2878 and warnings are handled more correctly and reported in such a way
2879 that it's easy to find one or the other in your output (so that you
2880 can e.g. figure out which of many problems caused COMPILE-FILE to
2882 * changed the severity of several compiler warnings from full WARNING
2883 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2884 compiler note reporting so that it doesn't use the condition system
2885 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2886 COMPILE-FILE command)
2887 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2888 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2889 no longer supported, since their implementation was deeply intertwingled
2890 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2891 * removed bogus "support" for compiler macros named (SETF FOO), and
2892 removed the compiler macro for SETF INFO (but only after making a fool
2893 of myself on the cmucl-imp mailing list by posting a bogus patch for
2894 DEFINE-COMPILER-MACRO..)
2895 * Compiled files containing forms which have side effects on the Lisp
2896 reader (such as DEFPACKAGE forms) are now handled more correctly.
2897 (Compiler queuing of top level lambdas has been suppressed by setting
2898 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2899 * deleted various currently-unused source files, e.g. gengc.lisp. They
2900 may be added back at some point e.g. when porting to other architectures,
2901 but until they are it's distracting to distribute them and to try to
2903 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2904 there were so many of them they're just distractions, and UNCROSS is
2905 known to be able to handle the current sources
2906 * moved PROFILE functionality into TRACE, so that it will be clear
2907 how the wrapping and unwrapping of functions when you profile them
2908 interacts with the wrapping and unwrapping of functions when you
2909 trace them. (Actually, the functionality isn't there yet, but at least
2910 the interface specification is there. Hopefully, the functionality will
2911 arrive with some future maintenance release.)
2912 * removed host-oops.lisp
2913 * changed signature of QUIT function to allow UNIX-CODE argument
2914 * fixed READ-SEQUENCE bug
2915 * tweaked verbose GC output so that it looks more like the progress
2916 output that ANSI specifies for functions like LOAD
2917 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2918 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob