1 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
2 * the system now has rudimentary external-format support; the
3 primary user-visible change at this time is that characters with
4 the high bit set (such as lower-case-e-acute) will print correctly
5 to a terminal in a UTF-8 environment.
6 * minor incompatible change: BASE-CHAR no longer names a class;
7 however, CHARACTER continues to do so, as required by ANSI.
8 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
9 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
10 has been moved to the SB-EXT package (temporarily re-exported from
12 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
13 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
15 * fixed bug #308: non-graphic characters now all have names, as
16 required. (reported by Bruno Haible)
17 * bug fix: Cyclic structures and unprintable objects in compiler
18 messages no longer cause errors. (reported by Bruno Haible)
19 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
20 and READ-FROM-STRING all now return a primary value of NIL if
21 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
22 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
23 (reported by Bruno Haible for CMUCL)
24 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
25 do not designate a condition. (reported by Bruno Haible for
27 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
28 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
29 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
30 permitting resolution in favour of any of the conflicting symbols.
31 (reported by Bruno Haible for CMUCL)
32 * FORMAT compile-time argument count checking has been enhanced.
33 (report from Bruno Haible for CMUCL)
34 * fixed some bugs revealed by Paul Dietz' test suite:
35 ** RENAME-PACKAGE allows all package designators as new package
38 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
39 * enhancement: saving cores with foreign code loaded is now
40 supported on x86/NetBSD and sparc/Linux in addition to the previously
42 * bug fix: on some platforms repeated installations caused multiple
43 copies of HTML documentation to be installed -- should not happen
44 any more. (reported by Stefan Scholl)
45 * bug fix: parsing self-recursive alien record types multiple times
46 no longer causes infinite recursion. (reported by Thomas F. Burdick,
47 original patch by Helmut Eller for CMUCL)
48 * bug fix: stack-exhaustion detection works now on NetBSD as well.
49 (thanks to Richard Kreuter)
50 * bug fix: defining classes whose accessors are methods on existing
51 generic functions in other (locked) packages no longer signals
52 bogus package lock violations. (reported by François-René Rideau)
53 * bug fix: special variables as DEFMETHOD parameters no longer have
54 associated bogus type declarations. (reported by David Wragg and
56 * bug fix: read-write consistency on streams of element-type
57 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
58 * bug fix: redefiniton of the only method of a generic function with
59 no DEFGENERIC no longer emits a full WARNING. In addition,
60 redefinition of generic functions with no DEFGENERIC to an
61 incompatible lambda list now signals an error. (thanks to Zach
63 * bug fix: DEFGENERIC now works even when there's a function of the
64 same name in an enclosing lexical environment. (thanks to Zach
66 * fixed compiler failure, caused by instrumenting code during
67 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
68 * optimization: added loop analysis and improved register allocation
69 * fixed some bugs revealed by Paul Dietz' test suite:
70 ** POSITION on displaced vectors with non-zero displacement
71 returns the right answer.
72 ** (SIMPLE-STRING) is a valid type specifier for sequence
74 ** *PRINT-LEVEL* handling for slotless structures is pedantically
76 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
77 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
79 ** The justification version of the FORMAT ~< directive treats
80 non-zero minpad parameter correctly.
82 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
83 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
84 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
85 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
86 the supported interface.
87 * new feature: Single-stepping of code compiled with DEBUG 2 or
88 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
89 * new feature: saving cores with foreign code loaded is now
90 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
91 Timothy Moore's work for CMUCL)
92 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
93 parameters to * instead of NIL if no initform is supplied.
94 (reported by Johan Bockgaard)
95 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
96 correctly when FUNCALL appears as the car of the form. Note:
97 despite this FUNCALL forms are not currently subject to
98 compiler-macro expansion. (port of Raymond Toy's fix for the
99 same from CMUCL, reported by Johan Bockgaard)
100 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
101 (thanks for Teemu Kalvas)
102 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
103 case instead of terminating the iteration (thanks for Julian
104 Squires, Sean Champ and Raymond Toy)
105 * bug fix: incorrect expansion of defgeneric that caused a style
106 warning. (thanks for Zach Beane)
107 * bug fix: slot accessor effective method computation works properly
108 for classes with multiple non-standard applicable methods on
109 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
110 * on x86 compiler supports stack allocation of results of LIST and
111 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
112 CMUCL implementation by Gerd Moellmann)
113 * fixed some bugs revealed by Paul Dietz' test suite:
114 ** FORMAT strings with both the ~<~:;~> form of the justification
115 directive and pretty-printing directives cause an error.
117 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
118 * incompatible change: the internal functions
119 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
120 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
121 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
122 instead of the old functions.
123 * new feature: on platforms where "dladdr" is available foreign
124 function names now appear in backtraces. (based on Helmut Eller's
126 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
127 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
129 * documentation: ASDF manual is now distributed with SBCL.
130 * bug fix: SBCL can now load its contributed modules with REQUIRE
131 even if the system-provided entries have been removed from
132 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
134 * bug fix: backtraces involving undefined functions or assembly
135 routines are more informative. (thanks to Brian Downing)
136 * bug fix: mutually referent alien structures now work correctly.
137 (reported by Rick Taube)
138 * bug fix: structures defined by WITH-ALIEN can be referred to
139 within other definitions in the same WITH-ALIEN.
140 * bug fix: division operators (MOD, TRUNCATE and the like) with
141 constant zero divisors and integer dividends no longer generate
143 * bug fix: provide default methods for INPUT-STREAM-P and
144 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
145 * bug fix: improve the detection and resolution of MOP metacycles
146 (where effective method computation depends on the generic function
147 having its effective method computed). (reported by Bruno Haible)
148 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
149 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
150 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
151 * bug fix: pathnames with relative directory components can be
152 represented relative to default pathnames.
153 * optimization: in taking the GCD of bignums, reduce the two bignums
154 to approximately the same size (using Euclid's algorithm) before
155 applying the more sophisticated binary GCD. (thanks to Juho
157 * optimization: COUNT on bitvectors now operates word-at-a-time.
158 * optimization: ASH with a positive, but not necessarily constant,
159 (leftwards) shift, when in a modular context, is compiled to a
161 * fixed some bugs revealed by Paul Dietz' test suite:
162 ** FORMAT variable parameters ("~V<char>") are defaulted properly
163 if the corresponding argument is NIL.
164 ** FORMAT directives accepting a minpad parameter treat negative
166 ** literal commas as character parameters to FORMAT directives are
168 ** literal spaces directly after ~<Newline> directives within a
169 format-logical-block (~:< ~@:>) do not induce :FILL-style
170 conditional newlines.
171 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
172 as specified: it no longer includes conditional newlines).
173 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
175 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
176 :PER-LINE-PREFIX argument does not evaluate to a string.
178 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
179 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
180 the manual for details; for now, package locks can be disabled by
181 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
182 if no major problems are found then it is likely that they will be
183 compiled in unconditionally.
184 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
185 unsupported operators on all platforms. To load a shared library
186 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
187 object file, link it into a shared library outside of SBCL and
188 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
190 * bug workaround: ROOM T and the GC were not working together
191 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
192 reporting facility aren't preserved. That reporting has been
193 disabled, so now until and unless someone figures out how to make it
194 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
195 * minor incompatible change: as threatened around sbcl-0.8.0, the
196 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
197 The symbols are also exported from SB-PCL for backwards
198 compatibility, but more so than before SB-PCL should be treated as
199 an implementation-internal package.
200 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
202 * the SB-SPROF contrib now works on (most) non-x86 architectures.
203 It is known as of this release not to work on the Alpha, however.
204 * fixed bug #167: errors signalled due to illegal syntax in method
205 bodies are now more legible.
206 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
207 designators and can hence be used with TYPEP.
208 * fixed bug #333: CHECK-TYPE now ensures that the type error
209 signalled, if any, has the right object to be accessed by
210 TYPE-ERROR-DATUM. (reported by Tony Martinez)
211 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
212 5.1.2.3 for multiple-value place subforms. (reported by Kalle
214 * fixed bug #334: programmatic addition of slots using specialized
215 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
216 and :ALLOCATION :CLASS slots.
217 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
218 float exponents. (rereported by Peter Seibel)
219 * fixed a bug: #\Space (and other whitespace characters) are no
220 longer considered to be macro characters in standard syntax by
222 * fixed bug: initialization of condition class metaobjects no longer
223 causes an instance of the condition to be created. (reported by
225 * fixed bug: it is now possible to have slots such that
226 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
227 description is neither :INSTANCE nor :CLASS.
228 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
229 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
230 SLOT-VALUE-USING-CLASS), and no longer causes errors with
231 non-standard SLOT-DEFINITION-ALLOCATION values.
232 * fixed bugs: various race conditions handling exiting threads.
233 CL-PPCRE's thread torture test now passes.
234 * fixed arguably-a-bug: GC time proportional to number of threads in
235 system even when most of them are idle
236 * optimization: improved performance of BIT and SBIT on bit-vectors.
237 * .fasl file incompatibility: The fasl file version number has
238 been incremented because of changes associated with package locks.
240 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
241 * minor incompatible change: the system no longer provides
242 optimization hints (conditions which are TYPEP
243 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
244 mode; these hints are still emitted when higher SPEED optimization
246 * new contrib module: a sampling profiler (profiling by statistical
247 sampling, rather than by instrumenting functions) is available as
248 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
249 * the behaviour of the standard function ED is now customizeable by
250 third parties through a hook variable: see ED's documentation
251 string for information on the protocol.
252 * the compiler no longer emits efficiency notes for (FUNCALL X)
253 when the type of X is uncertain under default optimization
255 * fixed bug 276: mutating a binding of a specialized parameter to a
256 method to something that is not TYPEP the specializer is now
258 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
259 exhibit the required behaviour on the x86 platform. (thanks to
260 Peter van Eynde, Eric Marsden and Bruno Haible)
261 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
262 even for difficult arguments. (reported by Peter Graves)
263 * fixed bug 141a: the backquote printer now descends quoted
265 * fixed another bug in backquote printing: no more destructive
266 modification of the form's list structure. (reported by Brian
268 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
269 move between its address being taken and the call to
270 interrupt_thread, fixing a crashing race condition.
271 * the SB-POSIX contrib implementation has been adjusted so that it
272 no longer exhibits ridiculously poor performance when constructing
273 instances corresponding to C structs.
275 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
276 * minor incompatible change: the sb-grovel contrib now treats C
277 structures as alien (in the sense of SB-ALIEN) objects rather than
278 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
279 has implications for memory management of client code
280 (sb-grovel-returned objects must now be manually managed) and for
281 type safety (alien objects now have full types).
282 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
283 used to control emission of compiler diagnostics, rather than the
284 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
285 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
286 quality should be considered deprecated.
287 * install.sh now installs the user manual as well
288 * (not quite a new documentable feature, but worth considering in
289 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
290 beginnings of a semantically meaningful condition hierarchy is
291 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
293 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
294 designator as the defaults argument.
295 * fixed bug: Displaced arrays whose displaced-to array has become
296 too small now cause ARRAY-DIMENSION to signal an error, providing
297 for safer bounds-checking. (reported by Bruno Haible)
298 * fixed bug: DEFCLASS slot definitions with identical :READER and
299 :WRITER names now signal a reasonable error. (reported by Thomas
301 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
303 * fixed bug: Invalid slot specification errors now print correctly.
304 (thanks to Zach Beane)
305 * fixed bug 320: Shared to local slot value transfers in class
306 redefinitions now happen corrently from superclasses as
307 well. (reported by Bruno Haible)
308 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
310 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
311 improper lists correctly. (reported by Bruno Haible)
312 * fixed bug 313: source-transform for <fun-name> was erroneously
313 applied to a call of a value of a variable with name <fun-name>.
314 (reported by Antonio Menezes Leitao)
315 * fixed bug 307: The obsolete instance protocol ensures that
316 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
317 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
318 remove dead unknown-values globs from the middle of the stack.
319 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
320 easier to resume long computations after using *BREAK-ON-SIGNALS*
321 to diagnose and fix failures. (thanks to Nikodemus Siivola)
322 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
323 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
324 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
325 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
326 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
328 * fixed a (fairly theoretical) bug in string printing: if
329 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
330 does not have array-element-type equal to the most general string
332 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
333 function name. (thanks to Nikodemus Siivola)
334 * fixed bug: compile-time format string checker failed on
335 non-closed ~{. (reported by Thomas F Burdick)
336 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
337 don't warn on legal loop code involving more than one aggregate
338 boolean. (thanks to Nikodemus Siivola)
339 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
340 in keyword position to MAKE-PACKAGE was not being reported as
342 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
343 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
345 * fixed bugs 280 and 312: the checking for multiple definitions in a
346 file is less likely to become confused by uses of inline
348 * fixed bug: the #S reader macro performs the keyword coercion
349 specified for slot names. (reported by Kalle Niemitalo)
350 * fixed bug: lambda lists may contain symbols whose names start with
351 & but are not lambda-list-keywords; their occurrence triggers a
353 * fixed bug 321: define-method-combination argument lambda lists do
354 not cause invalid code to be generated when &optional or &aux
355 variables have default values. (reported by Bruno Haible)
356 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
357 have CLOS classes; this appears also to have fixed reported
358 instability in stack exhaustion detection.
359 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
360 MUFFLE-WARNING when no associated restart is present is now
362 * optimization: rearranged the expansion of various defining macros
363 so that each expands into only one top-level form in a
364 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
366 * optimization: used a previously little-used slot in symbols to
367 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
369 * fixed some bugs revealed by Paul Dietz' test suite:
370 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
372 ** Fixed an optimization bug related to inheritance of initforms
373 from local to shared slots.
374 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
375 ** CAST optimizer forgot to flush argument derived type.
376 ** print/read consistency on floats is now orders of magnitude
377 more likely. (thanks also to Bruno Haible for a similar report
379 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
380 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
381 for objects of type REAL. Make it so.
382 ** SXHASH is specified (infelicitously) to respect similarity,
383 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
384 it so. (thanks to Markus Ziegler)
385 ** on the Alpha, the compiler succeeds in compiling functions
386 returning a known number of arguments greater than 63.
387 ** fixed handling of invalid NIL arguments in keyword position
389 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
391 ** provided a readably-printable representation for RANDOM-STATE
393 ** ensured that pathnames, where they have a namestring, always
394 print using #P"..." syntax.
396 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
397 * Support for the forthcoming 2.0 version of the NetBSD kernel
398 running on x86 hardware has been added. (thanks to Perry
399 E. Metzger most immediately, and others for their past work)
400 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
401 current release version; SBCL's OpenBSD support had been broken
402 since about the time of OpenBSD's switch to ELF binary format.)
403 * [placeholder for DX summary]
404 ** user code with &REST lists declared dynamic-extent, under high
405 speed or space and low safety and debug optimization policy.
406 * The manual has been converted to Texinfo format and the debugger
407 chapter from the cmucl manual has been added.
408 * A facility has been added to extract documentation strings from
409 sbcl and store them as Texinfo-formatted snippets for inclusion in
410 the manual (via Texinfo's @include directive)
411 * bug fix: compiler emitted division in optimized DEREF. (thanks for
412 the test case to Dave Roberts)
413 * bug fix: multidimensional simple arrays loaded from FASLs had fill
414 pointers. (reported by Sean Ross)
415 * bug fix: PROFILE output is printed nicely even for large numerical
416 values. (thanks to Zach Beane)
417 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
418 greater than 32 handle EOF correctly.
419 * bug fix: on X86 an immediate argument of the IMUL instruction is
420 correctly printed in disassembly. (thanks to Lutz Euler)
421 * bug fix: class slots in redefined classes preserve their old
422 values. (thanks to Bruno Haible and Nikodemus Siivola)
423 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
424 succeeds. (reported by Marco Baringer)
425 * fixed some bugs revealed by Paul Dietz' test suite:
426 ** READ-SEQUENCE now works on ECHO-STREAMs.
427 ** RATIONALIZE works more according to its specification. (thanks
430 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
431 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
432 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
433 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
434 should matter to you only if you rebind the printer control
435 variables and then find you want different bindings in the
436 debugger than in the ordinary execution of your program.)
437 * The runtime build system has been tweaked to support building
438 (on SPARC/SunOS) using a C compiler which invokes Sun's own
439 assembler and linker. (thanks to Nikodemus Siivola)
440 * Unbound, undefined, undeclared variables now trigger full
441 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
442 more often programmer error than deliberate exploitation of undefined
444 * optimization: the hash algorithm for strings has changed to one
445 that is less vulnerable to spurious collisions. (thanks to Juho
447 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
448 needless bounds checking. (thanks to Juho Snellman)
449 * optimization: implemented multiplication as a modular
450 (UNSIGNED-BYTE 32) operation on the PPC backend.
451 * fixed some bugs revealed by Paul Dietz' test suite:
452 ** ADJUST-ARRAY now copies the datum in a zero rank array if
454 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
455 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
456 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
458 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
460 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
462 ** ECHO-STREAMs no longer attempt to echo the end of file value to
463 their output stream on EOF from read.
464 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
465 have been read to end-of-file.
466 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
468 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
469 description of determination of which consecutive characters
471 ** Printing the "Space" character with escaping on now yields "#\\ ",
472 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
473 ** Reading floating-point numbers with *READ-BASE* set to a number
474 less than 10 works correctly.
475 ** Reading floating-point numbers with *READ-BASE* set to a number
476 more than 10 works correctly.
477 ** Printing with *PRINT-READABLY* targets the standard readtable, not
478 the readtable currently in effect.
480 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
481 * minor incompatible change: parsing of namestrings on a physical
482 (Unix) host has changed; numbers after the final #\. in a
483 namestring are no longer interpreted as a version field. This is
484 intented to be largely invisible to the user, except that the
485 meaning of the namestring "*.*.*" has changed: it now refers to a
486 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
487 should usually be replaced by
488 (make-pathname :name :wild :type :wild :version :wild)
489 with the added benefit that this is more likely to be portable.
490 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
491 option to OPEN now signals an error if the file being opened
492 exists; this may have an impact on existing code.
493 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
494 signals received, on the PowerPC platforms (both Linux and
495 Darwin). (thanks to Pierre Mai for pointing out the location of
497 * several fixes on OS X: The system now builds and runs cleanly on
498 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
499 (thanks to Brian Mastenbrook)
500 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
501 second-resolution: integer multiples of 1/3600 between -24 and 24.
502 (thanks to Vincent Arkesteijn)
503 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
504 type when called with 1 argument; PEEK-CHAR checked type of
505 PEEK-TYPE only after having read first character from a
506 stream. (reported by Peter Graves)
507 * bug fix: the garbage collector now has much better locality
508 behaviour, and in particular no longer treats all memory as being
509 exhausted when many small objects point to each other in a deeply
511 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
512 recognized as being TYPEP their class.
513 * bug fix: the PUSHNEW documentation string has been corrected.
514 (thanks to Vincent Arkesteijn)
515 * bug fix: defaulting of the value for the last of an atypically
516 large number of multiple values being bound was not being
517 performed correctly on the Alpha or PPC platforms
518 * optimization: implemented multiplication as a modular
519 (UNSIGNED-BYTE 32) operation on the x86 backend.
520 * optimization: SEARCH on simple-base-strings can now be open-coded.
521 (see also contrib/compiler-extras.lisp for inspiration for
522 teaching the compiler about the Boyer-Moore algorithm).
523 * value, returned by MAX (and MIN) called with several EQUALP, but
524 not EQL, arguments now does not depend on compiler settings.
525 * fixed some bugs revealed by Paul Dietz' test suite:
526 ** in stack analysis liveness information is propagated from
527 non-local entry points.
528 ** pathwise CAST removing failed when the CAST node did not start
530 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
531 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
533 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
534 host is already defined.
535 ** RENAME-FILE works on streams instead of signalling an internal
537 ** PEEK-CHAR uses the current readtable when determining whether
538 or not a character is whitespace.
539 ** MERGE-PATHNAMES handles the case when the pathname does not
540 specify a name while the default-pathname specifies a version.
541 ** Pathnames now stand a better chance of respecting print/read
543 ** Attempting to use standardized file system operators with a
544 pathname with invalid :DIRECTORY components signals a
546 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
548 ** DIRECTORY on logical pathnames is more correct.
549 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
550 signal a TYPE-ERROR if their argument is not a stream.
551 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
552 designator argument does not designate a stream.
553 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
554 examining the synonym.
555 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
557 ** OPEN and WITH-OPEN-STREAM allow opening streams with
558 element-type larger than ([UN]SIGNED-BYTE 32).
560 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
561 * When built with the :SB-FUTEX feature, threaded builds now take
562 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
563 for faster/more reliable mutex and condition variable support.
564 * Incompatible change (but one you probably shouldn't have been using
565 anyway): the interface and code for arbitrating between multiple
566 threads in the same user session has been redesigned.
567 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
568 error when called without an explicit environment argument.
569 (thanks to Nikodemus Siivola)
570 * bug fix: buffered :DIRECTION :IO streams are less likely to become
571 confused about their position. (thanks to Adam Warner and Gerd
573 * bug fix: Pretty printing backquoted forms with unquotations in the
574 argument list position of various code constructs such as LAMBDA
575 now works correctly. (reported by Paul Dietz)
576 * bug fix: Pretty printing unquotations no longer loses all
577 stream position information.
578 * optimization: performance of string output streams is now less
579 poor for multiple small sequence writes.
580 * optimization: performance of CSUBTYPEP in the presence of complex
581 expressions involving CONS and NOT many times has been improved.
582 (reported by Paul Dietz)
583 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
585 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
586 streams for the REPL, for the debugger, and so on. (thanks to
588 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
589 * fixed some bugs revealed by Paul Dietz' test suite:
590 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
591 is ignored if it is too small, rather than propagating through
592 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
593 ** extremely complex negations of CONS types were not being
594 sufficiently canonicalized, leading to inconsistencies in
596 ** VALUES tranformer lost derived type.
598 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
599 * fixed a bootstrapping bug: the build process no longer assumes
600 that the various BOOLE-related constants have the same value in
601 host and target lisps. (noted by Paul Dietz' test suite on an
602 SBCL binary built from CLISP)
603 * The system can now be dynamically linked on the MIPS platform,
604 which enables dynamic loading of foreign code from Lisp. (thanks
605 to Ralf Baechle for discussions on the MIPS ABI)
606 * The system now records debugging information for its own source
607 files in a filesystem-position-independent manner, relative to
608 the "SYS" logical host.
609 * fixed a compiler bug: MV-LET convertion did not check references
610 to the "max args" entry point. (reported by Brian Downing)
611 * tweaked disassembly notes to be less confident about proclaiming
612 some instruction as an LRA. (thanks to Brian Downing)
613 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
614 now each have their own history, command character, and other
615 characteristics. (thanks to David Lichteblau)
616 * fixed some bugs revealed by Paul Dietz' test suite:
617 ** compiler failure in compiling LOGAND expressions including a
619 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
620 shift greater than 32.
621 ** FLUSH-DEST did not mark blocks for type check regeneration.
622 ** HANDLER-CASE failed to accept declarations in handler clauses
623 in some circumstances.
625 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
626 * New code in contrib/sb-introspect (still probably not entirely
627 stable yet) provides some support for smart Lisp development
628 environments like SLIME.
629 * The conditions signalled for errors occurring when loading .fasl
630 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
631 in a way which should help ASDF recover gracefully.
632 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
633 stuff has been cleaned up. If you code contrib/ stuff, this might
634 affect you, and you can look at contrib/README, contrib/STANDARDS,
635 and/or the 0.8.4.27 diff to check.
636 * In full calls the compiler now does not generate checks for declared
637 argument types for all arguments.
638 * various threading fixes
639 ** and some experimental patches which didn't make it into
640 the main tree for this release, but which are shipped in
641 contrib/experimental-thread.patch as a possible fix for some
642 failures (deadlock, spinning...) in GC-intensive multithreaded
644 * fixed PPC build problem (source code incompatibility of different
645 library versions): added offsetof() hackery which attempts to divine
646 where glibc maintainers put uc_mcontext today
647 * fixed bug 282: compiler does not trust type assertions while passing
648 arguments to a full call.
649 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
650 &OPTIONAL VALUES type parameter.
651 * fix bug 214: algorithm for noting rejected templates is now more
652 similar to that of template seletion. (also reported by rydis on
654 * fixed bug 141b: printing backquoted information readably and prettily
655 inserts a space where necessary.
656 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
657 (CHARACTER 10) are now reported as errors, rather than propagated
658 as unknown types. (reported by piso on #lisp)
659 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
660 with values NIL and :ERROR. (thanks to Milan Zamazal)
661 * fixed bug 191c: CLOS now does proper keyword argument checking as
662 described in CLHS 7.6.5 and 7.6.5.1.
663 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
664 longer raise an error; further, using a list as a for-as-arithmetic
665 counter now raises a meaningful error.
666 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
667 now understood by sequence creation functions such as MAKE-SEQUENCE
669 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
670 a STRING-INPUT-STREAM.
671 * compiler enhancement: SIGNUM is now better able to derive the type
673 * type declarations inside WITH-SLOTS are checked. (reported by
675 * fixed some bugs revealed by Paul Dietz' test suite:
676 ** incorrect optimization of TRUNCATE for a positive first
677 argument and negative second.
678 ** compiler failure in let-convertion during flushing dead code.
679 ** compiler failure while deriving type of TRUNCATE on an
680 interval, containing 0.
681 ** ASH of a negative bignum by a negative bignum count now returns
683 ** intersection of CONS types now canonicalizes properly, fixing
684 inconsistencies in SUBTYPEP.
686 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
687 * incompatible change: The --disable-debugger command line
688 option now clobbers the debugger at a more fundamental
689 level, by redefining #'INVOKE-DEBUGGER instead of by
690 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
691 is specified by ANSI to ignore *DEBUGGER-HOOK* and
692 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
693 enter the debugger REPL and then suffer recursive errors
694 because *DEBUG-IO* is also messed up in --disable-debugger mode;
695 while under the new system, BREAK in --disable-debugger mode
696 terminates the system just as an unhandled error would.
697 * fixed compiler performance when processing loops with a step >1;
698 * bug fix: DOCUMENTATION now retrieves generic function
699 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
700 support has been systematized, and now supports the methods
701 specified by ANSI, along with a default method and a method for
702 slot documentation. (reported by Nathan Froyd)
703 * bug fix: effective methods associated with a generic function are
704 no longer cached over a change of that generic function's method
705 combination. (reported by Andreas Fuchs)
706 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
707 names a non-existent directory. (thanks to Andreas Fuchs)
708 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
709 the PPC platform, lead to stack corruption; this has been fixed.
710 (reported by Rainer Joswig)
711 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
712 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
713 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
714 arithmetic in general, is now much more reliable on the PPC
716 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
717 platform now returns the right answer.
718 * optimization: restored some effective method precomputation in
719 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
720 precomputation is now tunable.
721 * optimization: compiler-internal data structure use has been
722 reviewed, and changes have been made that should improve the
723 performance of the compiler by about 20%.
724 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
725 simple-base-strings and simple-bit-vectors is improved.
726 * optimization: the optimization of 32-bit logical and arithmetic
727 functions introduced in version 0.8.3 on the x86 has been
728 implemented on the mips, ppc and sparc platforms; an
729 implementation of the same facility, but for 64-bit arithmetic,
730 has been added for the alpha.
731 * microoptimization: the compiler is better able to make use of the
732 x86 LEA instruction for multiplication by constants.
733 * bug fix: in some situations compiler did not report usage of
734 generic arithmetic in (SPEED 3) policy.
735 * bug 145b fix: compiler used wrong type specifier while converting
736 MEMBER-types to numeric.
737 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
739 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
740 index argument now works properly on the Alpha platform.
741 * bug fix: floating point exception treatment on the Alpha platform
743 * bug fix: FILE-POSITION works much better on string input and
744 output streams. (thanks to Nikodemus Siivola)
745 * bug fix: many threading/garbage collection symptoms sorted.
746 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
747 might be pseudo-atomic.
748 * internal change: Stopping for GC is now done with signals not
749 ptrace. GC is now done in whichever thread wanted it, instead of
751 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
753 * bug fix: result form in DO is not contained in the implicit
755 * incompatible change: ICR structure is changed; the value part of
756 CONTINUATION is now called LVAR; corresponding functions are
757 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
758 * added type deriver for ISQRT (thanks to Robert E. Brown).
759 * bug fix: better support for loading from the command line when an
760 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
762 * fixed some bugs revealed by Paul Dietz' test suite:
763 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
764 ** ROUND and FROUND now give the right answer when given very
765 small float arguments.
766 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
768 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
769 ** (GCD 0 <negative-integer>) returned <negative-integer>.
770 ** LCM should return a non-negative integer.
771 ** PARSE-INTEGER returned the index of a terminator instead of the
772 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
773 ** PARSE-INTEGER returned an incorrect index being applied to a
775 ** LCM with two arguments of 0 returns 0 rather than signalling
777 ** unsigned addition of a 32-bit constant with the high bit set no
778 longer causes an internal compiler error on the x86.
779 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
780 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
781 with negative last argument.
782 ** byte specifiers with zero size and position no longer cause
783 an error during type derivation.
784 ** bignum multiplication on the Alpha platform now returns the
786 * porting: The system now builds on SuSE AMD64, although it still
787 generates a 32-bit binary.
788 * .fasl file incompatibility: The fasl file version number has
789 been incremented (because of the changes to internal compiler
790 data structures referred to above).
792 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
793 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
794 more accurately, on the Darwin kernel running on PowerPC hardware.
795 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
796 * Compiler code deletion notes now signal a condition of type
797 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
798 an associated MUFFLE-WARNING restart.
799 * The compiler now performs limited argument count validation of
800 constant format strings in FORMAT, and where appropriate in ERROR,
801 CERROR and WARN. (thanks to Gerd Moellmann)
802 * New ASDF-INSTALL contrib can be used for automatic download and
803 installation of third-party Lisp code from CCLAN or other sites
805 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
806 which forces another thread to execute a function supplied by the
808 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
809 now accept and act upon their :ELEMENT-TYPE keyword argument.
810 (reported by Martin Atzmueller, Edi Weitz)
811 * bug fix: FILE-POSITION now accepts position designators up to
812 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
813 is the greater. (thanks to Patrik Nordebo)
814 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
815 Kalle Olavi Niemitalo)
816 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
817 printable. (reported by Eric Marsden)
818 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
819 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
820 * x86 bug fix in control stack exhaustion checking: now shows backtrace
821 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
822 (thanks to Stig Sandoe)
823 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
824 UNREAD-CHAR now correctly includes the unread character in the
825 target sequence. (thanks to Gerd Moellmann)
826 * bug fix in threaded builds: the system can now be suspended and
827 resumed by shell job control with minimal disruption.
828 * bug fixes in times and timezones >2038AD
829 * better handling of "where is GNU make?" problem in build scripts
830 (thanks to Nikodemus Siivola)
831 * new optimization: inside a named function any reference to a
832 function with the same name is considered to be a self-reference;
833 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
834 optimization quality.
835 * new optimization on x86: logical functions and + now have
836 optimized (UNSIGNED-BYTE 32) versions, which are automatically
837 used when the result is truncated to 32 bits.
838 * VALUES declaration is partially enabled.
839 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
840 * fixed some bugs revealed by Paul Dietz' test suite:
841 ** The system now obeys the constraint imposed by
842 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
843 types form a lattice under type intersection.
844 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
845 ** ASSOC now ignores NIL elements in an alist.
846 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
847 and (1+ MOST-POSITIVE-FIXNUM) answers.
848 ** The addition of a method with invalid qualifiers to a generic
849 function does not cause an error to be signalled immediately;
850 a warning is signalled, and the error is generated only on
851 calling the generic function.
852 * changed .fasl file version number, in part to add type codes for
853 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
854 obscure ANSI requirements
856 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
857 * fixed bug 148: failure to inline-expand a local function left
858 garbage, confusing the compiler.
859 * fixed bugs 3cd: structure slot readers perform type check if the
860 slot can have an invalid value (i.e. it is either not initialized
861 or can be written with a less specific slot writer).
862 * bug fix: the compiler now traps array references to elements off
863 the end of an array; previously, the bounds checking in some
864 circumstances could go off-by-one.
865 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
867 * type declarations for array element types now obey the description
868 on the CLHS page "Declaration TYPE", as per discussions on
869 sbcl-help around 2003-05-08. This means that a declaration
870 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
871 declaration, all references to BAR will be asserted or assumed
872 (with THE, so dependent on compiler policy) to involve objects of
873 type FOO. Note that no such declaration is implied in
874 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
875 * declared types of functions from the "Conditions"
876 chapter. (reported by Paul Dietz)
877 * bug fix: CERROR accepts a function as its first argument.
878 * bug fix: NTH an NTHCDR accept a bignum as index
879 arguments. (reported by Adam Warner)
880 * optimization: character compare routines now optimize comparing
881 against a constant character. (reported by Gilbert Baumann)
882 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
883 argument now works properly on the MIPS platform.
884 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
885 * repeated evaluation of the same DEFSTRUCT, a slot of which is
886 declared to have a functional type, does not cause an error
888 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
889 many :DEFAULT-INITARGS. (reported by Istvan Marko)
890 * fixed bug: if last continuation of a deleted block has a
891 destination, this destination should be deleted too. (reported by
893 * fixed a bug in the bootstrap process: the host compiler's values
894 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
895 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
896 test case from Patrik Nordebo)
897 * improved the ability of the disassembler on the PPC platform to
898 provide helpful disassembly notes.
899 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
900 the class in more cases than previously.
901 * bug fix: FILE-POSITION now understands :START and :END for
902 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
903 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
904 8) data. (thanks to David Lichteblau)
905 * bug fix: it is possible to add a method to a generic function
907 * bug fix: reader failed to signal END-OF-FILE inside an
908 object representation. (reported by Nikodemus Siivola)
909 * fixed some bugs revealed by Paul Dietz' test suite:
910 ** LAST and [N]BUTLAST should accept a bignum.
911 ** condition slot accessors are methods.
912 ** (VECTOR NIL) is a subtype of STRING.
914 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
915 * minor incompatible change: some nonsensical specialized lambda
916 lists (used in DEFMETHOD) which were previously ignored now signal
918 * minor incompatible change: the system is now aware of the types of
919 variables in the COMMON-LISP package, and will signal errors for
920 most violations of these type constraints (where previously they
921 were silently accepted).
922 * minor incompatible change: COMPILE-FILE now uses the freedom
923 afforded (ANSI 3.2.2.3) to use derived function types for
924 functions defined in the same file. This also permits the system
925 to warn on static type mismatches and function
926 redefinition. (Currently it does not work with high DEBUG level.)
927 * minor incompatible change: VALUES declaration is disabled.
928 * When issuing notes, the compiler now signals a condition of type
929 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
930 restart for use in user handlers. It is expected that the
931 COMPILER-NOTE condition will eventually become a condition
932 supertype to a hierarchy of note types, which will then be
933 handleable in a similar fashion. However, at the moment, no such
934 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
935 but it's an implementation detail, not a classification for the
937 * Changes in type checking closed the following bugs:
938 ** type checking of unused values (192b, 194d, 203);
939 ** template selection based on unsafe type assertions (192c, 236);
940 ** type checking in branches (194bc).
941 * A short form of VALUES type specifier has ANSI meaning (it has
942 increased the number of situations when SBCL cannot perform type
944 * fixed bug in DEFSTRUCT: once again, naming structure slots with
945 keywords or constants is permissible.
946 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
947 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
948 classes. (thanks to Antonio Martinez)
949 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
950 outputs FRESH-LINE or TERPRI, and no longer converts its stream
951 argument to a pretty-print stream. Instead, it leaves any such
952 operations to DESCRIBE-OBJECT methods.
953 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
955 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
956 lambda lists. (thanks to David Lichteblau)
957 * bug fix: Defining a generic function with a :METHOD-CLASS being a
958 subclass of STANDARD-METHOD no longer causes stack exhaustion.
959 (thanks to Gerd Moellmann)
960 * fixed bug 246: increased compilation speed of long
961 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
963 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
965 * DEFCONSTANT now throws a condition of type
966 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
967 constant to a non-EQL value; CONTINUE and ABORT restarts
968 respectively change and preserve the value.
969 * fixed bug 63: The code walker, part of the implementation of CLOS,
970 is now better at handling symbol macros.
971 * bug fix: There is no longer an internal implementation type named
972 CL:LENGTH. (reported by Raymond Toy)
973 * bug fix: In macro-like defining macros/special operators the
974 implicit block does not enclose the lambda list.
975 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
976 enclosed in parentheses) are not suitable as type specifiers, and
977 their use properly signals an error now.
978 * bug fix: An argument count mismatch for a type specifier in code
979 being compiled no longer causes an unhandled error at compile
980 time, but signals a compile-time warning.
981 * fixed simple vector readable printing
982 * bug fix: DESCRIBE takes more care over whether the class
983 precedence list slot of a class is bound before accessing it.
984 (reported by Markus Krummenacker)
985 * bug fix: FORMATTER can successfully compile pretty-printer format
986 strings which use variants of the ~* directive inside.
987 * bug fix: SEARCH now applies its TEST predicate to the elements of
988 the arguments in the correct order. (thanks to Wolfhard Buss)
989 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
990 in type inference. (thanks to Robert E. Brown)
991 * bug fix: Reading in symbols with an explicit package name of ""
992 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
993 * fixed some bugs revealed by Paul Dietz' test suite:
994 ** NIL is now allowed as a structure slot name.
995 ** Arbitrary numbers, not just REALs, are allowed in certain
996 circumstances in LOOP for-as-arithmetic clauses.
997 ** Multiple class redefinitions before slot access no longer
999 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1000 association between the name and a class.
1001 ** Generic functions with non-standard method-combination and over
1002 five methods all of which return constants no longer return NIL
1003 after the first few invocations. (thanks to Gerd Moellmann)
1004 ** CALL-NEXT-METHOD with no arguments now passes the original
1005 values of the arguments, even in the presence of assignment.
1006 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1008 ** DISASSEMBLE works with closures and funcallable instances.
1009 ** ADD-METHOD now returns the generic function, not the new method.
1010 ** FIND-METHOD signals an error if the lengths of the specializers
1011 is incompatible with the generic function, even if the ERRORP
1013 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1014 which its argument is a member.
1015 ** DEFCLASS only redefines the class named by its class-name
1016 argument if that name is the proper name of the class;
1017 otherwise, it creates a new class.
1018 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1019 of the UNBOUND-SLOT condition to the name of the slot.
1020 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1021 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1022 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1023 SLOT-MAKUNBOUND in the specified fashion.
1025 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1026 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1027 cross-compilation host. As a consequence, we can now bootstrap our
1028 way up to SBCL starting with a bare gcc toolchain and human-readable
1029 source code (first the source to CLISP, then the source to SBCL).
1030 * A contributed module containing a partial implementation of the
1031 simple-streams interface has been included. (thanks to Rudi
1033 * A contributed module implementing the RFC1321 Message Digest
1034 Algorithm, known as MD5, has been included.
1035 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1036 no longer has any effect, as the code controlled by this feature
1037 has been deleted. (As far as we know, no-one has ever built using
1038 this feature, and its semantics were confused in any case).
1039 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1040 work on conditions (as required by the ANSI specification),
1041 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1042 expected behaviour on conditions. Users should note, however,
1043 that such behaviour is not required by the ANSI specification,
1044 and so use of this behaviour may render their code unportable.
1045 * fixed some bugs revealed by Paul Dietz' test suite:
1046 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1048 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1049 ** SXHASH on condition objects no longer returns NIL.
1050 ** :ALLOCATION :CLASS slots are better treated; their values are
1051 updated on class redefinition, and initforms inherited from
1052 superclasses are applied.
1053 ** REMOVE-METHOD returns its generic function argument even when
1054 no method was removed.
1055 ** SHARED-INITIALIZE now initializes the values of the requested
1056 slots, including those with :ALLOCATION :CLASS.
1057 ** ALLOCATE-INSTANCE now works on structure classes defined via
1058 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1060 ** SLOT-EXISTS-P now works on conditions, as well as structures
1062 ** MAKE-LOAD-FORM now has the required methods on
1063 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1064 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1065 keyword, and now implements the SLOT-NAMES argument.
1066 ** methods with &OPTIONAL arguments no longer allow too many
1067 arguments to be passed in the call without error.
1068 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1069 option is consistent with the required arguments of the generic
1070 function lambda list.
1071 * bug fix: REQUIRE accepts a string designator. (Thanks to
1073 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1074 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1075 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1076 * bug fix: The compiler now checks for duplicated variables in macro
1078 * bug fix: SETQ on globals returns the correct value.
1079 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1080 not a COMPILER-ERROR (followed by some other strange error on
1081 choosing the CONTINUE restart).
1082 * bug fix: make.sh and friends are now more consistent in the way that
1083 they look for GNU "make".
1085 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1086 * experimental native threads support (on x86 Linux >=2.4 only).
1087 This is not compiled in by default: you need to add :SB-THREAD to
1088 the target features. See the "Beyond ANSI" chapter of the manual
1090 * fix for longstanding nonANSIism: The old distinction between
1091 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1092 The return value from CL:FIND-CLASS is now a CLOS class, and
1093 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1094 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1095 * An interface to the MetaObject Protocol, as described in Kiczales,
1096 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1097 MIT Press, 1991, is available from the SB-MOP package.
1098 * incompatible change: the SB-PCL package should now be considered
1099 a private implementation detail, and no longer a semi-private MOP
1101 * minor incompatible change: due to rearrangement for threads, the
1102 control stack and binding stack are now allocated at arbitrary
1103 addresses instead of being hardcoded per-port. Users affected by
1104 this probably have to be doing advanced things with shared
1105 libraries, and will know who they are.
1106 * minor incompatible change: Previously, all --eval forms used were
1107 processed with READ before any of them were processed with EVAL.
1108 Now each --eval form is processed with both READ and EVAL before
1109 the next --eval form is processed. (Thus package operations like
1110 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1111 work as the user might reasonably expect.)
1112 * minor incompatible change: *STANDARD-INPUT* is now only an
1113 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1115 * minor incompatible change: Y-OR-N-P is now character-oriented,
1116 not line oriented. Also, YES-OR-NO-P now works without errors.
1117 (thanks to Antonio Martinez)
1118 * sb-aclrepl module improvements: an integrated inspector, added
1119 repl features, and a bug fix to :trace command.
1120 * Known functions, which cannot be open coded by the backend, are
1121 considered to be able to check types of their arguments. (fixing
1122 a bug report by Nathan J. Froyd)
1123 * fixed a bug in computing method discriminating functions: It is
1124 now possible to define methods specialized on classes which have
1125 forward-referenced superclasses. (thanks to Gerd Moellmann)
1126 * fixed evaluation order in optional entries (reported by Gilbert
1128 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1129 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1130 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1131 required-by-AMOP NAME argument, as well as CLASS and
1132 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1133 * fixed bug 20: DEFMETHOD can define methods using names that are
1134 not the proper names of classes to designate class specializers.
1135 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1136 Unix file descriptors, instead of blowing up. (thanks to Antonio
1138 * Garbage collection refactoring: user-visible change is that a
1139 call to the GC function during WITHOUT-GCING will not do garbage
1140 collection until the end of the WITHOUT-GCING. If you were doing
1141 this you were probably losing anyway.
1142 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1143 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1144 TYPEP the latter but not the former.
1145 * The compiler issues a full WARNING for calls to undefined functions
1146 with names from the CL package.
1147 * MAP-INTO for a vector destination is open coded. (reported by
1148 Brian Downing on c.l.l)
1149 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1150 documentation string.
1151 * fixed some bugs revealed by Paul Dietz' test suite:
1152 ** COPY-ALIST now signals an error if its argument is a dotted
1154 ** Condition slots are now accessed more correctly in the presence
1155 of multiple initargs for a given slot.
1156 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1157 exclude restarts of the same name associated with a different
1159 ** DEFCLASS of forward-referenced classes with another
1160 forward-referenced class in the superclasses list no longer
1162 ** Condition slots are now initialized once each, not multiple
1163 times. (thanks to Gerd Moellmann)
1164 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1166 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1167 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1168 arguments contain duplicated elements.
1169 ** RESTART-CASE understands local macros.
1170 ** RESTART-CASE associates exactly its own restarts with a condition.
1171 ** ENDP in safe mode checks its argument to be of type LIST.
1172 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1173 in question is unbound.
1174 ** Optimized MAKE-INSTANCE functions no longer cause internal
1175 assertion failures in the presence of duplicate initargs.
1176 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1177 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1178 propagated even in the ctor optimized implementation of
1180 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1182 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1183 * a better implementation of SXHASH on (simple) bit vectors,
1184 measured both in execution speed and in distribution of results
1185 over the positive fixnums, has been installed. Likewise, a better
1186 implementation of EQUAL for simple bit vectors is now available.
1187 * fixed CEILING optimization for a divisor of form 2^k.
1188 * fixed bug 240 (emitting extra style warnings "using the lexical
1189 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1190 by Antonio Martinez)
1191 * fixed SXHASH, giving different results for NIL depending on type
1192 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1193 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1194 variable. (found by Rolf Wester)
1195 * SBCL does not ignore type declarations for special
1196 variables. (reported by rif on c.l.l 2003-03-05)
1197 * some bug fixes in contrib/sb-aclrepl/
1198 * fixed some bugs revealed by Paul Dietz' test suite:
1199 ** a bug in the CONS type specifier, whereby the CAR and CDR
1200 types got intertwined, has been fixed;
1201 ** the type system is now able to reason about the interaction
1202 between INTEGER and RATIO types more completely;
1203 ** APPEND, [N]REVERSE and NRECONC check that those their
1204 arguments, which must be proper lists, are really so;
1205 ** An array specialized to be unable to hold elements has been
1206 implemented, as required -- yes, really -- by ANSI;
1207 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1208 on malformed property lists;
1210 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1211 * incompatible packaging change: in line with Unix convention,
1212 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1213 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1214 * REQUIRE and PROVIDE are now optionally capable of doing something
1215 useful. See the documentation string for REQUIRE.
1216 * infrastructure for a managed SBCL contrib system: contributed
1217 modules in this release include:
1218 ** the ASDF system definition facility;
1219 ** an interface to the BSD Sockets API;
1220 ** an ACL-like convenience interface to the repl;
1221 (thanks to Kevin Rosenberg)
1222 ** an implementation of ROTATE-BYTE, with efficient implementation
1224 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1225 gives a closer approximation to the right answer than previously.
1226 (thanks to Raymond Toy)
1227 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1228 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1229 optional environment arguments, as required by ANSI.
1230 * fixed bugs in other functions taking environment objects, allowing
1231 calls with an explicit NIL environment argument to be compiled
1233 * fixed bug 228: primary return values from
1234 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1235 COMPILE or FUNCTION.
1236 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1237 :TYPE will no longer signal errors on innocuous objects.
1238 * fixed bug 231b: SETQ is better at respecting type declarations in
1239 the lexical environment.
1240 * fixed a bug in DEFCLASS: classes named by symbols with no or
1241 unprintable packages can now be defined.
1242 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1243 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1244 * fixed compiler failure related to checking types of functions.
1245 (reported by Robert E. Brown)
1246 * the compiler is now much more consistent in its error-checking
1247 treatment of bounding index arguments to sequence functions: in
1248 (SAFETY 3) code, errors will be signalled in almost all cases if
1249 invalid sequence bounding indices are passed to functions defined
1250 by ANSI to operate on sequences.
1251 * fixed a bug in the build procedure: documentation of SBCL-specific
1252 packages is now preserved and available in the final Lisp image.
1253 * lifted FDEFINITION lookup out of loops in the implementation of
1254 many list operations. (thanks to Robert E. Brown)
1255 * fixed a bug in the reader: the #n# reader macro now works for
1256 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1257 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1258 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1259 E. Brown and Tony Martinez respectively)
1260 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1261 SLOT-BOUNDP: in particular, it is now able to optimize them much
1262 better, and is now not vulnerable to having packages renamed.
1263 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1264 always called when a slot is not present in an instance. (thanks
1266 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1267 longer signal an error on unreading a character following EOF on
1268 the previous constituent stream. (thanks to Tony Martinez)
1269 * fixed some bugs revealed by Paul Dietz' test suite:
1270 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1271 not just nonnegative fixnums;
1272 ** the logical bit-array operators such as BIT-AND now accept an
1273 explicit NIL for their "opt-arg" argument (to indicate a
1274 freshly-consed result bit-array);
1275 ** ELT now signals an error on an invalid sequence index in safe
1277 ** the type system is now cleverer about negations of numeric
1278 types, and consequently understands the BIGNUM and RATIO types
1280 ** the type system is now cleverer about the interaction between
1281 INTEGER and RATIO types: while bugs still remain, many more
1282 cases are accurately computed;
1283 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1284 if it is in the last clause;
1285 ** CONSTANTLY now correctly returns a side-effect-free function in
1287 ** DECLARE is no longer treated as a special-operator; in
1288 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1289 * incremented fasl file version number due to the change in the
1290 DEFSTRUCT-SLOT-DESCRIPTION structure.
1292 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1293 * minor incompatible change: code processed by the "interpreter" or
1294 EVAL now has a compilation optimization policy of (DEBUG 2)
1295 (changed from (DEBUG 1)) to improve debuggability of interactive
1296 development, and to allow the use of the debug RETURN command in
1298 * an experimental implementation of the RETURN command for the
1299 debugger has been included. (thanks to Frederik Kuivinen)
1300 * fixed bug 62: constraints were not propagated into a loop.
1301 * fixed bug in embedded calls of SORT (reported and investigated by
1303 * fixed some bugs revealed by Paul Dietz' test suite:
1304 ** printing and reading of arrays with some dimensions having
1305 length 0 (thanks to Gerd Moellmann);
1306 ** BOA constructor with &AUX argument without a default value does
1307 not cause a type error;
1308 ** CONSTANTP now returns true for all self-evaluating objects.
1310 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1311 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1312 accessors that are related by inheritance, as specified in the
1313 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1314 Valtteri Vuorikoski)
1315 * The compiler is now able to inline functions that were defined in
1316 a complex lexical environment (e.g. inside a MACROLET).
1317 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1319 * Support for the upcoming FreeBSD-5.0 release has been included.
1320 (thanks to Dag-Erling Smorgrav)
1321 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1322 effect when it is not in a toplevel context.
1323 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1324 stand a better chance of being correct. (thanks to Gerd
1326 * fixed bug in COERCE, which now signals an error on coercing a
1327 rational to a bounded real type which excludes the expected
1329 * The compiler is now able to derive types more accurately from the
1330 COERCE and COMPILE functions.
1331 * fixed bug 223: functional binding is considered to be constant
1332 only for symbols in the CL package.
1333 * fixed bug 231: SETQ did not check the type of a variable being set
1334 (reported by Robert E. Brown)
1335 * A new optimization for MAKE-INSTANCE has been included, fixing
1336 various bugs (including relating to :ALLOCATION :CLASS slots and
1337 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1339 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1340 ** As required by ANSI, LOOP now disallows anonymous collection
1341 clauses such as COLLECT I in conjunction with aggregate boolean
1342 clauses such as THEREIS (= I 1);
1343 ** LOOP now signals an error when any variable is reused in the
1344 same loop (including the potentially useful construct analogous
1345 to WITH A = 1 WITH A = (1+ A);
1346 ** IT is only a special loop symbol within the first clause of a
1347 conditional loop clause;
1348 ** LOOP with a typed iteration variable over a hashtable now
1349 signals a type error iff it should.
1350 * fixed some other bugs revealed by Paul Dietz' test suite:
1351 ** FILE-STREAM now names the class previously known as FD-STREAM;
1352 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1353 argument) no longer signals an error;
1354 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1355 of the slot symbol, rather than using the current package
1356 ((:CONC-NAME "") continues to intern the slot's name in the
1358 * incremented fasl file version number, because of the incompatible
1359 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1360 of the new implementation of DEFINE-COMPILER-MACRO.
1362 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1363 * Support for building SBCL for MIPS platforms running in
1364 little-endian mode has now been checked in, and basic
1365 functionality on said platforms verified.
1366 * minor incompatible change: PCL now records the pathname of a file
1367 in which methods and the like are defined, rather than its
1369 * minor incompatible change: TRUENAME now considers the truename of
1370 a file naming a directory to be the pathname with :DIRECTORY
1371 component indicating that directory.
1372 * minor incompatible change: a NAMED clause in the extended form of
1373 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1374 reason for the previous behaviour is unclear.
1375 * more systematization and improvement of CLOS and MOP conformance
1376 in PCL (thanks to Gerd Moellman and Pierre Mai):
1377 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1379 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1380 primary methods with no specializers;
1381 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1383 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1384 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1385 FORWARD-REFERENCED-CLASSes; error reporting on
1386 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1388 ** SXHASH on CLOS instances now uses a slot internal to the
1389 instance to return different numbers on distinct instances,
1390 while preserving the same return value through invocations of
1392 ** DEFMETHOD signals errors when methods with longer incongruent
1393 lambda lists are added to generic functions;
1394 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1395 CLASS, as specified in AMOP;
1396 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1397 on the order returned by the primary method for classes of
1398 class STANDARD-CLASS;
1399 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1400 * fixed some bugs shown by Paul Dietz' test suite:
1401 ** DOLIST puts its body in TAGBODY;
1402 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1404 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1405 value producing form;
1406 ** if more variables are given to PROGV than values, extra
1407 variables are bound and made to have no value;
1408 ** NSUBSTITUTE on list arguments gets the right answer with
1410 ** ELT signals an error of type TYPE-ERROR when the index argument
1411 is not a valid sequence index;
1412 ** LOOP signals (at macroexpansion time) an error of type
1413 PROGRAM-ERROR when duplicate variable names are found;
1414 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1415 ** FUNCALL of special-operators now cause an error of type
1417 ** PSETQ now works as required in the presence of side-effecting
1418 symbol-macro places;
1419 ** NCONC accepts any object as its last argument;
1420 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1422 ** loop-for-as-package does not require a package to be explicitely
1424 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1426 * fixed bug 166: compiler preserves "there is a way to go"
1427 invariant when deleting code.
1428 * fixed bug 172: macro lambda lists with required arguments after
1429 &REST arguments now cause an error to be signalled. (thanks to
1431 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1432 bug. (thanks to Matthew Danish)
1433 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1435 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1436 arguments are lexically rebound. (thanks to Gerd Moellmann and
1438 * fixed bug 194: error messages are now more informative when there
1439 is no primary method applicable in a call to a generic
1440 function. (thanks to Gerd Moellmann)
1441 * fixed bug in command line argument checking (thanks to Julian
1443 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1444 (thanks to Matthew Danish)
1445 * incremented fasl file version number, because of the
1446 SXHASH-related changes in the layout of CLOS data structures
1448 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1449 * minor incompatible change: The runtime (the Unix executable named
1450 "sbcl") is now much pickier about the .core files it will load.
1451 Essentially it now requires .core files to descend from the same
1452 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1453 as the runtime does. (The intent is to prevent the crashes which
1454 can occur, and which can even be reported as mysterious failures,
1455 when people patch the sources or change the build parameters
1456 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1457 sbcl and .core files.)
1458 * fixed bug: VALUES-LIST is no longer optimized away.
1459 * fixed bug 142: The FFI conversion of C string values to Lisp
1460 string values no longer conses excessively. (thanks to Nathan
1461 Froyd porting Raymond Toy's fix to CMU CL)
1462 * began to systematize and improve MOP conformance in PCL (thanks to
1463 Nathan Froyd, Gerd Moellman and Pierre Mai):
1464 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1466 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1467 ** FINALIZE-INHERITANCE is now called on class finalization;
1468 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1469 argument precedence order.
1470 * fixed bug 202: The compiler no longer fails on functions whose
1471 derived types contradict their declared type.
1472 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1473 so it can be non-toplevel.
1474 * The fasl file version number has changed (because of the new
1475 implementation of DEFMACRO).
1476 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1477 safe code, that any length requirement by their type-specifier
1478 argument is valid. The exceptions to this are described in bug
1480 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1481 functions now check the types of their inputs as required by ANSI.
1482 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1483 introduced symbol is DECLAREd to be SPECIAL.
1484 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1485 * fixed bug: :COUNT argument to sequence functions may be negative
1486 * fixed bug: body of DO-SYMBOLS may contain declarations
1487 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1488 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1489 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1490 symbol macro only once
1491 * fixed printing of call frame when argument list is unavailable
1492 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1493 * compiler no longer signals WARNING on unknown keyword
1496 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1497 * A beta-quality port to the mips architecture running Linux,
1498 based on the old CMUCL backend, has been made. It has been tested
1499 on a big-endian kernel, and works sufficiently well to be able to
1500 rebuild itself; it has not been tested in little-endian mode.
1501 * fixed an inconsistency between gencgc.c and purify.c which made
1502 dumping/loading .core files unreliable
1503 * fixed bug 120a: The compiler now deals correctly with IFs where
1504 the consequent is the same as the alternative, instead of
1505 misderiving the return type. (thanks to Alexey Dejneka)
1506 * fixed bug 113: Logical pathnames are now dumpable (the logical
1507 host is resolved at load-time, throwing an error if it is not
1509 * fixed bug 174: FORMAT's error message is slightly clearer when a
1510 non-printing character is used in a format directive.
1511 * fixed several bugs in compiler checking of type declarations, i.e.
1512 violations of the Python "declarations are assertions" principle
1513 (thanks to Alexey Dejneka)
1514 * fixed several bugs in PCL's error checking (thanks to Gerd
1516 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1518 * fixed bug in compilation of functions as first class values
1519 (thanks to Antonio Martinez-Shotton)
1520 * The compiler's handling TYPE-ERRORs which it can prove will
1521 inevitably happen at runtime has been cleaned up and corrected
1522 in several ways. (thanks to Alexey Dejneka)
1523 * improved argument type checking for various basic arithmetic
1524 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1525 lavished on them in the past that they can be compiled in many
1526 ways in different special cases
1527 * fixed bug 181: compiler checks validity of user supplied type
1529 * cleaned up code flushing in optimization: Function calls which
1530 should signal errors for safety purposes (e.g. which ANSI says
1531 should signal errors when their arguments are of incorrect type)
1532 are no longer optimized away.
1533 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1534 * incremented fasl file version number, because changes in the
1535 implementation of sequence functions like COERCE caused
1536 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1537 in old inline expansions) to become undefined. (Actually these
1538 changes were later undone, so we might very well be binary
1539 compatible with 0.7.7 after all, but leaving the version number
1540 incremented seemed like the simplest and most conservative
1543 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1544 * An alpha-quality port to the parisc architecture running Linux,
1545 based on the old CMUCL backend, has been made. This, even more so
1546 than the other backends, should be considered still a work in
1547 progress; known problems include that the Linux kernel in 64-bit
1548 mode does not propagate the correct sigcontext structure to
1549 userspace, and consequently SBCL on a parisc64 kernel will not
1551 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1552 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1553 suppressed.) Also now that the compiler is looking at declarations
1554 in the environment, it checks optimization declarations as well,
1555 and suppresses inlining when (> DEBUG SPEED).
1556 * More fixes have been made to treatment of floating point exception
1557 treatment and other Unix signals. In particular, floating point
1558 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1559 * The detection and handling of control stack exhaustion (infinite
1560 or very deeply nested recursion) has changed. Stack exhaustion
1561 detection is now done by write-protecting pages at the OS level
1562 and applies at all optimization settings; when found, a
1563 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1564 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1565 be caught using IGNORE-ERRORS.
1566 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1567 correctly when transforming recursive LABELS functions to LETs.
1568 (thanks to Alexey Dejneka)
1569 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1570 that are names of constants or global variables.
1571 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1572 alien routines with docstrings.
1573 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1574 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1576 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1577 (thanks to Eric Marsden)
1578 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1579 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1580 * Bug fix: The SPARC backend can now compile functions involving
1581 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1582 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1583 to a functions expecting a PATHNAME-DESIGNATOR.
1584 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1585 lambda lists. (thanks to Alexey Dejneka)
1586 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1587 functions so that EXPORTing the name of the class doesn't cause
1588 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1589 to Antonio Martinez for reporting this)
1590 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1591 constant-folded without failing an assertion. (thanks to Einar
1592 Floystad Dorum for reporting this)
1593 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1594 types are now dealt with more correctly by the compiler.
1595 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1596 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1597 behaviour analogous to RENAME-FILE. This puts its behaviour more
1598 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1600 * The fasl file version number has changed again. (because of the
1601 bug fix involving the names of PCL MAKE-INSTANCE functions)
1603 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1604 * bug fix: Floating point exceptions are treated much more
1605 consistently on the x86/Linux and PPC/Linux platforms.
1606 * Array initialization with :INITIAL-ELEMENT is now much faster for
1607 cases when the compiler cannot open code the array creation, but
1608 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1609 array accesses have also seen a speed increase.
1610 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1611 specified. (This was at the root of some bad interactions between
1612 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1614 * bug fix: Internal error arguments for undefined functions are now
1615 computed correctly on the PPC/Linux platform.
1616 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1617 Raymond Toy's patch for CMU CL)
1618 * Support for the Solaris 9 operating environment has been included
1619 (thanks to Daniel Merritt)
1620 * A very ugly but hopefully complete draft of the missing FFI chapter
1621 of the manual has been created by reformatting the corresponding
1622 CMU CL manual chapter into (currently very ugly and incoherent)
1623 DocBook and bringing it up to date for SBCL behavior. Thus, the
1624 manual is now essentially complete, at least by my extreme
1625 once-and-only-once standards, whereby it's acceptable to refer to
1626 the doc strings of SB-EXT functions as the primary documentation.
1627 * The fasl file version number has changed again, due to cleanup of
1628 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1629 is no longer a static symbol.)
1631 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1632 * SBCL now builds with OpenMCL (version 0.12) as the
1633 cross-compilation host; also, more progress has been made toward
1634 bootstrapping under CLISP.
1635 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1637 * bug 158 fixed: The compiler can now deal with integer loop
1638 increments different from 1; fixing this turned out also to fix
1640 * bug 169 fixed: no more bogus warnings about using lexical bindings
1641 despite the presence of perfectly good SPECIAL declarations (thanks
1642 to David Lichteblau)
1643 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1644 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1645 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1647 * bug 180 fixed: Method combination specifications no longer ignore
1648 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1649 * bug fix: Structure type predicate functions now check their argument
1650 count as they should.
1651 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1652 correctly. (thanks to Pierre Mai)
1653 * minor incompatible change: The --noprogrammer option is deprecated
1654 in favor of the new --disable-debugger option, which is very similar.
1655 (The major difference is that it takes effect at a slightly different
1656 time at startup, causing handling of errors in --sysinit and
1657 --userinit files will be affected differently.) The
1658 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1659 been added to allow this functionality to be controlled from ordinary
1660 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1661 maintainers, who might want to run non-interactive scripts to
1662 build SBCL cores which will later be used interactively.)
1663 * minor incompatible change: The LOAD function no longer, when given
1664 a wild pathname to load, loads all files matching that pathname.
1665 Instead, an error of type FILE-ERROR is signalled.
1667 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1668 * bug 147 fixed: The compiler preserves its block link/count
1669 invariants more correctly now so that it doesn't crash. (thanks
1671 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1673 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1674 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1675 no-value-for-this-character as NIL (as specified by ANSI).
1676 * HOST-NAMESTRING on physical pathnames now returns a string that is
1677 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1678 (thanks to Christophe Rhodes)
1679 * The Alpha port handles icache flushing more correctly. (thanks to
1681 * More progress has been made toward bootstrapping under CLISP. (thanks
1682 to Christophe Rhodes)
1683 * The fasl file format has changed again, because dynamic loading
1684 on OpenBSD (which has non-ELF object files) motivated some cleanups
1685 in the way that foreign symbols are transformed and passed around.
1686 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1687 is no longer treated as whitespace by the reader, but instead as
1688 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1689 |A
\7fB|, instead of A as it used to.
1691 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1692 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1693 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1694 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1695 this as of 0.7.1.45, but was left out of the previous news section
1696 (thanks to Dan Barlow)
1697 * SBCL now runs on the Solaris operating system on SPARC architectures
1698 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1699 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1700 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1701 * SPARC backend cleanups, allowing builds of cores optimized for V8
1702 and V9 SPARCS, and also emission of code targeted to a particular
1703 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1705 * SBCL is closer to bootstrapping under CLISP, thanks to various
1706 fixes by Christophe Rhodes.
1707 * The fasl file format has changed again, to allow the compiler's
1708 INFO database to support symbol macros.
1709 * The user manual (in doc/) is formatted into HTML more nicely.
1710 (thanks to coreythomas)
1711 * The system is smarter about SUBTYPEP relationships, especially
1712 those involving NOT types (including types such as ATOM which are
1713 represented internally using NOT types). Thus SUBTYPEP is less
1714 likely to return (VALUES NIL NIL) in general, and in particular
1715 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1717 * The fasl file format has changed again, because the internal
1718 representation of types now includes a new slot to support the new
1719 SUBTYPEP-of-NOT-types logic.
1720 * (not a change in the main branch of SBCL, but a related prototype
1721 which can hopefully be merged into the main branch of SBCL in the
1722 future:) Brian Spilsbury has produced a Unicode-enabled variant of
1723 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
1724 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
1725 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
1726 dispatch macro character combinations. (thanks to Alexey Dejneka)
1727 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
1728 that superficially look like logical namestrings correctly.
1729 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
1731 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
1732 default supplied-p) for &optional and &key arguments. (thanks to
1735 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
1736 * incompatible change: The compiler is now less aggressive about
1737 tail call optimization, doing it only when (> SPACE DEBUG) or
1738 (> SPEED DEBUG). (This is an incompatible change because there are
1739 programs which relied on the old CMU-CL-style behavior to optimize
1740 away their unbounded recursion which will now die of stack overflow.)
1741 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
1742 for non-GENCGC systems has been increased to 20M (since that
1743 seems much closer to the likely performance optimum for modern
1744 systems than the old 4M value was)
1745 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
1746 and *DEBUG-PRINT-LEVEL*
1747 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
1748 of CMU CL's support for SPARC, and various endianness and other
1749 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
1750 * new syntactic sugar for the Unix command line: --load foo.bar is now
1751 an alternate notation for --eval '(load "foo.bar")'.
1753 ** The system now detects stack overflow and handles it gracefully,
1754 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
1755 optimization settings. (This is a good thing in general, and
1756 its introduction in this version should be particularly timely
1757 for anyone whose code fails because of suppression of tail
1759 ** The system now hunts for the C variable "environ" in a more
1760 devious way, to avoid segfaults when the C library version differs
1761 between compile time and run time. (thanks to Christophe Rhodes)
1762 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
1763 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
1764 ** The compiler no longer issues bogus style warnings for undefined
1765 classes in the same source file as the DEFCLASSes which defined
1766 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
1768 ** fixes in CONDITION class precedence list for undefined function
1769 errors (thanks to Alexei Dejneka)
1770 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
1771 correctly. (thanks to Dan Barlow)
1772 ** portability fixes aiming at bootstrapping under CLISP (thanks
1773 to Dave McDonald and Christophe Rhodes)
1774 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
1775 ** fixes in type translation and and type inference (thanks to
1777 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
1778 ** various fixes in the new ports (thanks to Dan Barlow)
1779 * several changes related to debugging:
1780 ** suppression of tail recursion, as noted above
1781 ** stack overflow detection, as noted above
1782 ** The default implementation of TRACE has changed. :ENCAPSULATE T
1783 is now the default. (For some time encapsulation has been more
1784 reliable than the breakpoint-based :ENCAPSULATE NIL
1785 implementation, at least on X86 systems; and I just noticed that
1786 encapsulation also seems closer to the spirit of the ANSI
1789 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
1791 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
1792 up properly again. (There was a packaging bug in 0.7.0 which
1793 left their definitions in SB-SYS::LOAD-FOREIGN and
1794 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
1795 vital for most things which interface to C-level interfaces,
1796 like extensions working with sockets or databases or
1797 Perl-compatible regexes or whatever, and the need to fix
1798 this bug is the main reason that 0.7.1 was released so
1800 ** DEFGENERIC is now choosier about the methods it redefines, so that
1801 reLOADing a previously-LOADed file containing DEFGENERICs does
1802 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
1803 cycle now works as it should. (thanks to Alexey Dejneka)
1804 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
1805 fixed by Christophe Rhodes. (He actually submitted this patch
1806 months ago, and I delayed until after 0.7.0.)
1807 ** Bug 111 (internal compiler confusion about runtime checks on
1808 FUNCTION types) was fixed by Alexey Dejneka.
1809 * Some internal cleanups (getting rid of variables which aren't
1810 needed now that the byte interpreter is gone) caused the fasl
1811 file format number to change again.
1813 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
1814 * major incompatible change: The default fasl file extension, i.e. the
1815 default extension for files produced by COMPILE-FILE, has changed
1816 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
1818 ** There are many changes in the implementation of the compiler.
1819 SBCL is now essentially a compiler-only implementation of ANSI
1820 Common Lisp. EVAL still "interprets" a few special cases, but
1821 almost all the interesting cases are handled by creating
1822 a LAMBDA expression, calling COMPILE on it, then calling
1823 FUNCALL on the result.
1824 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
1825 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
1826 Since the code is newer, there might still be some new bugs
1827 (though not as many as before Martin Atzmueller's fixes:-). But
1828 the new code is substantially simpler and clearer, and hopefully
1829 any remaining bugs will be simpler, less fundamental, and more
1830 fixable then the bugs in the old code.
1831 ** The revised compiler is still a little unsteady on its feet.
1833 *** The debugging information it produces (particularly the names
1834 of FUNCTION objects) is sometimes much less useful than what
1835 the old compiler produced.
1836 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
1837 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
1838 within a MACROLET) has been temporarily weakened.
1839 ** There are new compiler optimizations for various functions:
1840 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
1841 FIND-IF-NOT, POSITION-IF-NOT, and FILL
1842 *** the math functions TRUNCATE, FLOOR, and CEILING
1843 *** the function-of-all-trades COERCE
1844 Mostly these should be transparent, but there's one
1845 potentially-annoying problem (bug 117): when the compiler
1846 inline-expands a function and does type analysis on the result,
1847 it can create control paths which have type mismatches, and
1848 when it can't prove that those control paths aren't taken,
1849 it will issue WARNINGs about the type mismatches. This is
1850 a particular problem in practice for the new sequence functions.
1851 It's not clear how this should be fixed, and for now, a
1852 workaround is given in the entry for 117 in the BUGS file.
1853 ** (Because of the interaction between the two previous items --
1854 occasional inlining problems and new inline expansions -- some
1855 of the new sequence function optimizations won't really kick in
1856 completely until debugging information, and then inlining, are
1857 straightened out in some future version.)
1858 * minor incompatible changes:
1859 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
1860 DIRECTORY no longer implicitly promotes NIL slots of its
1861 pathname argument to :WILD. In particular, when you ask for the
1862 contents of a directory (which you used to be able to do without
1863 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
1864 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
1865 ** changes in behavior that ANSI explicitly defines to be
1866 implementation dependent:
1867 *** The new compiler-only implementation still conforms with ANSI,
1868 but acts a little different than before. Besides the obvious
1869 changes in performance tradeoffs (that the cost per form passed
1870 to EVAL has gone up, and the cost per form executed by EVAL
1871 has gone down), the behavior of the system changes a little
1872 because there are no longer any interpreted function objects.
1873 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
1874 e.g. doing COMPILE on the output of interactive DEFUN is
1876 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
1878 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
1879 has changed from (:CL) to NIL.
1880 *** The CHAR-NAME of unprintable ASCII characters which, unlike
1881 e.g. #\Newline and #\Tab, don't have names specified in the
1882 ANSI Common Lisp standard, is now based on their ASCII symbolic
1883 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
1884 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
1885 are no longer used for output.
1886 ** changes in internal implementation constants:
1887 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
1888 4 million. (If your application spends a lot of time GCing and
1889 you have a lot of RAM, you might want to experiment with
1890 increasing it even more.)
1891 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
1892 However, almost all old code should still continue to work without
1893 immediate update, as SB-C-CALL is now a (deprecated) nickname
1895 ** Old operator names in the style DEF-FOO are now deprecated in
1896 favor of new corresponding names DEFINE-FOO, for consistency with
1897 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
1898 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
1899 internal symbols, but a few supported extensions like
1900 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
1901 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
1902 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
1903 etc. as you get deeper into recursive calls to the debugger
1904 command loop, instead of the old "5]", "5]]", "5]]]"
1905 sequence. (I was motivated to do this when squabbles between
1906 ILISP and SBCL left me very deeply nested in the debugger. In the
1907 short term, this change will probably provoke more ILISP/SBCL
1908 squabbles, but hopefully it will be an improvement in the long run.)
1909 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
1910 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
1911 function, since declaiming return types involving aliens is
1912 (1) annoyingly messy to do by hand and (2) vital to efficient
1913 compilation of code which calls such functions.
1914 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
1915 longer reexported by the SB-EXT package. They're solely useful
1916 for alien code, so it seems more logical that you should get
1917 them from the SB-ALIEN package, not in SB-EXT.
1918 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
1919 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
1920 features. Instead, the code that they used to control is always
1921 built into the system.
1922 * many other bug fixes
1923 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
1924 advantage of the new EVAL-WHEN stuff and to clean them up in
1925 general, and they are now more ANSI-compliant in a number of
1926 ways. Martin Atzmueller is responsible for a lot of this.
1927 ** Besides the cleanups discussed above, Martin Atzmueller fixed
1929 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
1930 *** correct ERROR type for various file operations
1931 *** some fixes for Lisp streams
1932 *** DEFMETHOD syntax checking
1933 *** changing old weird representation of debug information as
1934 strings (which, among their other deficiencies, don't transform
1935 correctly when you rename packages, and don't change their
1936 print representation when you change things like *PACKAGE*
1937 and *PRINT-LENGTH*) to symbols and lists of symbols
1938 He also made several improvements and fixed several bugs in DESCRIBE.
1939 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
1941 *** misbehavior of WRITE-STRING/WRITE-LINE
1942 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
1943 and several other LOOP problems as well
1944 *** DIRECTORY when similar filenames are present
1945 *** DEFGENERIC with :METHOD options
1946 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
1947 *** bug in the optimization of ARRAY-ELEMENT-TYPE
1948 *** argument ordering in FIND with :TEST option
1949 *** mishandled package designator argument in APROPOS-LIST
1950 *** various problems in the backquote readmacro
1951 *** a bug in APROPOS
1952 *** probably some others that I'm not describing very well here,
1953 since the CVS log documents them by reference to sbcl-devel
1954 messages, and the SourceForge archives aren't working well.:-(
1955 ** Dan Barlow improved the Alpha port (and is making progress on the
1956 PPC port, for those of you who think different).
1957 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
1958 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
1959 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
1960 continues to work on the SPARC port (for those of you in a position
1961 to look down upon our little PC-compatible boxes from a great height).
1962 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
1963 and uses that copy, rather than the current dynamic value, when
1964 it's trying to decide whether to truncate output. Thus e.g.
1965 (let ((*print-lines* 50))
1966 (pprint-logical-block (stream nil)
1968 (let ((*print-lines* 8))
1969 (print (aref possiblybigthings i) stream)))))
1970 should now truncate the logical block only at 50 lines, instead of
1971 often truncating it at 8 lines, as it did before.
1972 * The doc/cmucl/ directory, containing old CMU CL documentation
1973 from the time of the fork, is no longer part of the base system.
1974 SourceForge has shut down its anonymous FTP service, and with it
1975 my original plan for distributing the old CMU CL documentation
1976 there. For now, if you need these files you can download an old
1977 SBCL source release and extract them from it.
1978 * The fasl file version number changed again, for dozens of reasons,
1979 some of which are apparent above.
1981 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
1982 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
1983 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
1984 patch, so that DISASSEMBLE output is much nicer.
1985 * The code in the SB-PROFILE package now seems reasonably stable.
1986 I still haven't decided what the final interface should look like
1987 (I'd like PROFILE to interact cleanly with TRACE, since both
1988 facilities use function encapsulation) but if you have a need
1989 for profiling now, you can probably use it successfully with
1990 the current CMU-CL-style interface.
1991 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
1992 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
1993 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
1994 link now returns the dangling link itself, and for similar
1995 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
1996 link itself. (In these cases the old code signalled an error and
1997 looped endlessly, respectively.) Thus, DIRECTORY now works even
1998 in the presence of dangling and cyclic symbolic links.
1999 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2000 is now a supported extension again, since the consensus on
2001 sbcl-devel was that it can be useful for ordinary development
2002 work, not just for debugging SBCL itself.
2003 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2004 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2005 that currently-defined functions might be redefined later with
2006 different return types.
2007 * Hash tables can be printed readably, as inspired by CMU CL code
2008 of Eric Marsden and SBCL code of Martin Atzmueller.
2009 * better error handling in CLOS method combination, thanks to
2010 Martin Atzmueller porting Pierre Mai's CMU CL patches
2011 * more overflow fixes for >16Mbyte I/O buffers
2012 * A bug in READ has been fixed, so that now a single Ctrl-D
2013 character suffices to cause end-of-file on character streams.
2014 In particular, now you only need one Ctrl-D at the command
2015 line (not two) to exit SBCL.
2016 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2018 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2019 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2020 does the right thing.
2021 * The implementation of some type tests, especially for CONDITION
2022 types, is now tidier and maybe faster, due to CMU CL code
2023 originally by Douglas Crosher, ported by Martin Atzmueller.
2024 * Some math functions have been fixed, and there are new
2025 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2026 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2027 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2028 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2029 likely to be built into sbcl-0.7.0.)
2030 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2031 CL, ported to SBCL by Martin Atzmueller)
2032 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2033 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2034 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2035 * There's a new slam.sh hack to shorten the edit/compile/debug
2036 cycle for low-level changes to SBCL itself, and a new
2037 :SB-AFTER-XC-CORE target feature to control the generation of
2038 the after-xc.core file needed by slam.sh.
2039 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2040 COMPILE-FILE is no longer supported, so that now every function
2041 gets an entry point, so that block compilation looks a little
2042 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2043 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2044 returns the number of bytes consed since the system started,
2045 rather than the number consed since the first time the function
2046 was called. (The new definition parallels ANSI functions like
2047 CL:GET-INTERNAL-RUN-TIME.)
2048 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2049 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2050 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2051 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2052 * Fasl file version numbers are now independent of the target CPU,
2053 since historically most system changes which required version
2054 number changes have affected all CPUs equally. Similarly,
2055 the byte fasl file version is now equal to the ordinary
2058 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2059 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2060 is no longer recognized. I apologize for this, because it was
2061 listed in SB-EXT as a supported extension, but I found that
2062 its existing behavior was poorly specified, as well as incorrectly
2063 specified, and it looked like too much of a mess to straighten it
2064 out. I have enough on my hands trying to get ANSI stuff to work..
2065 * many patches ported from CMU CL by Martin Atzmueller, with
2066 half a dozen bug fixes in pretty-printing and the debugger, and
2067 half a dozen others elsewhere
2068 * fixed bug 13: Floating point infinities are now supported again.
2069 They might still be a little bit flaky, but thanks to bug reports
2070 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2071 as flaky as they were.
2072 * The --noprogrammer command line option is now supported. (Its
2073 behavior is slightly different in detail from what the old man
2074 page claimed it would do, but it's still appropriate under the
2075 same circumstances that the man page talks about.)
2076 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2077 are now supported, and enabled by default. Thus, the compiler can
2078 handle many floating point and complex operations much less
2079 inefficiently. (Thus e.g. you can implement a complex FFT
2081 * The compiler now detects type mismatches between DECLAIM FTYPE
2082 and DEFUN better, and implements CHECK-TYPE more correctly, and
2083 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2084 thanks to patches from Martin Atzmueller.
2085 * various fixes to make the cross-compiler more portable to
2086 ANSI-conforming-but-different cross-compilation hosts (notably
2087 Lispworks for Windows, following bug reports from Arthur Lemmens)
2088 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2089 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2090 fixed thanks to Pierre Mai's CMU CL patches.
2091 * fixes to keep the system from overflowing internal counters when
2092 it tries to use i/o buffers larger than 16M bytes
2093 * fixed bug 45a: Various internal functions required to support
2094 complex special functions have been merged from CMU CL sources.
2095 (When I was first setting up SBCL, I misunderstood a compile-time
2096 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2097 * improved support for type intersection and union, fixing bug 12
2098 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2099 more obscure bugs as well
2100 * some steps toward byte-compiling non-performance-critical
2101 parts of the system, courtesy of patches from Martin Atzmueller
2102 * Christophe Rhodes has made some debian packages of sbcl at
2103 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2104 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2105 stable, but are nonetheless usable. When he's ready, I'd be happy
2106 to add them to the SourceForge "File Releases" section. (And if
2107 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2108 * new fasl file format version number (because of changes in
2109 internal representation of (OR ..) types to accommodate the new
2110 support for (AND ..) types, among other things)
2112 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2113 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2115 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2117 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2118 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2119 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2120 * DESCRIBE now works on structure objects again.
2121 * Most function call argument type mismatches are now handled as
2122 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2123 know whether the function will be redefined before the call is
2124 executed. (The compiler could flag local calls with full WARNINGs,
2125 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2126 it doesn't keep track of enough information to know whether calls
2127 are local in this sense.)
2128 * Compiler output is now more verbose, with messages truncated
2129 later than before. (There should be some supported way for users
2130 to override the default verbosity, but I haven't decided how to
2131 provide it yet, so this behavior is still controlled by the internal
2132 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2133 src/compiler/ir1util.lisp.)
2134 * Fasl file format version numbers have increased again, because
2135 support for the Gray streams extension changes the layout of the
2136 system's STREAM objects.
2137 * The Gray subclassable streams extension now works, thanks to a
2138 patch from Martin Atzmueller.
2139 * The full LOAD-FOREIGN extension (not just the primitive
2140 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2141 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2142 but like most other programs, it defaults to copying the Unix
2143 environment from the original process instead of starting the
2144 new process in an empty environment.
2145 * Extensions which manipulate the Unix environment now support
2146 an :ENVIRONMENT keyword option which doesn't smash case or
2147 do other bad things. The CMU-CL-style :ENV option is retained
2148 for porting convenience.
2149 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2150 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2152 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2154 * A patch from Martin Atzmueller seems to have solved the SIGINT
2155 problem, and as far as we know, signal-handling now works cleanly.
2156 (If you find any new bugs, please report them!)
2157 * The system no longer defaults Lisp source file names to types
2158 ".l", ".cl", or ".lsp", but only to ".lisp".
2159 * The compiler no longer uses special default file extensions for
2160 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2161 seems to expect a single default extension for all compiled code,
2162 and there's no compelling reason to try to stretch the standard
2163 to allow two different extensions.) Instead, byte-compiled files
2164 default to the same extension as native-compiled files.
2165 * Fasl file format version numbers have increased again, because
2166 a rearrangement of internal implementation packages made some
2167 dumped symbols in old fasl files unreadable in new cores.
2168 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2169 many fewer weird special cases.
2170 * Bug #17 (differing COMPILE-FILE behavior between logical and
2171 physical pathnames) has been fixed, and some related misbehavior too,
2172 thanks to a patch from Martin Atzmueller.
2173 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2174 by Tim Moore, ported to SBCL by Martin Atzmueller.
2175 * Martin Atzmueller fixed several filesystem-related problems,
2176 including bug #36, in part by porting CMU CL patches, which were
2177 written in part by Paul Werkowski.
2178 * More compiler warnings in src/runtime/ are gone, thanks to
2179 more patches from Martin Atzmueller.
2180 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2183 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2185 * DESCRIBE now works on CONDITION objects.
2186 * The debugger now handles errors which arise when trying to print
2187 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2189 * The build system now uses an additional file, customize-target-features.lisp,
2190 to allow local modifications to the target *FEATURES* list. (The point of
2191 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2192 debugging features enabled, without having to worry about propagating it
2193 into everyone's system when I do a "cvs update".) When no
2194 customize-target-features.lisp file exists, the target *FEATURES* list
2195 should be constructed the same way as before.
2196 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2197 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2198 warn about behavior which is undefined under the ANSI spec. Note: This
2199 is specified by ANSI, but it's not very popular with programmers.
2200 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2201 macro in the SBCL sources for an example of a workaround which you
2202 might use to make portable ANSI-standard code which does what you want.
2203 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2204 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2205 when it's used as a non-toplevel form. (This is required in order
2206 to implement the DEFCONSTANT-EQX macro.)
2207 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2208 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2209 funny things, due to bugs in the implementation of EVAL-WHEN
2210 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2211 non-toplevel DEFCONSTANTs are uncommon.)
2212 * The core file version number and fasl file version number have been
2213 incremented, because the old noncompliant DEFCONSTANT behavior involved
2214 calling functions which no longer exist, and because I also took the
2215 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2216 * fixed bug 1 (error handling before read-eval-print loop starts), and
2217 redid debugger restarts and related debugger commands somewhat while
2219 ** The QUIT debugger command is gone, since it did something
2220 rather different than the SB-EXT:QUIT command, and since it never
2221 worked properly outside the main toplevel read/eval/print loop.
2222 Invoking the new TOPLEVEL restart provides the same functionality.
2223 ** The GO debugger command is also gone, since you can just invoke
2224 the CONTINUE restart directly instead.
2225 ** The TOP debugger command is also gone, since it's redundant with the
2226 FRAME 0 command, and since it interfered with abbreviations for the
2228 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2230 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2231 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2232 some porting work by Martin Atzmueller)
2233 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2234 with a boatload of patches which he ported to SBCL. Now that those
2236 ** The system tries to make sure that its low-priority messages
2237 are prefixed by semicolons, to help people who like to use
2238 syntax highlighting in their ILISP buffer. (This patch
2239 was originally due to Raymond Toy.)
2240 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2241 patches originally written by Raymond Toy.
2242 ** The compiler understands coercion between single-value and
2243 multiple-VALUES type expressions better, getting rid of some very
2244 weird behavior, thanks to patches originally by Robert MacLachlan
2245 and Douglas Crosher.
2246 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2247 lambda lists, thanks to a patch originally by Pierre Mai.
2248 ** The system no longer bogusly warns about "abbreviated type
2250 ** The compiler gets less confused by inlining and RETURN-FROM,
2251 thanks to some patches originally by Tim Moore.
2252 ** The system no longer hangs when dumping circular lists to fasl
2253 files, thanks to a patch originally from Douglas Crosher.
2254 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2255 undefined function error.
2256 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2257 in structure slot initforms) for now, documented workaround instead:-|
2258 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2259 * fixed bug 5: added stubs for various Gray stream functions called
2260 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2261 installed, at least appropriate type errors are generated
2262 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2263 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2264 consistently in DEFMETHOD forms.
2265 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2266 it doesn't seem to affect SBCL after all
2267 * The C runtime system now builds with better optimization and many
2268 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2270 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2272 * The system is now under CVS at SourceForge (instead of the
2273 CVS repository on my home machine).
2274 * The new signal handling code has been tweaked to treat register
2275 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2276 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2277 downstream, e.g. in debug-int.lisp, has implicit dependencies
2278 on the unsignedness of integer representation of machine words,
2279 and that caused the system to bomb out with infinite regress
2280 when trying to recover from type errors involving signed values,
2281 e.g. (BUTLAST '(1 2 3) -1).)
2282 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2283 (This was one of the bugs Peter Van Eynde reported back in July.)
2284 * The system now uses code inspired by Colin Walters' O(N)
2285 implementation of MAP (from the cmucl-imp@cons.org mailing
2286 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2287 inline the MAP operation, and there is more than one
2288 sequence argument to the MAP call (so that it can't just
2289 do ETYPECASE once and for all based on the type of the
2290 single sequence argument). (The old non-inline implementation
2291 of the general M-argument sequence-of-length-N case required
2292 O(M*N*N) time when any of the sequence arguments were LISTs.)
2293 * The QUIT :UNIX-CODE keyword argument has been renamed to
2294 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2295 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2297 * Raymond Wiker's patches to port dynamic loading from Linux to
2298 FreeBSD have been added.
2299 * The BUGS file is now more nearly up to date, thanks in large part
2300 to Martin Atzmueller's review of it.
2301 * The debugger now flushes standard output streams before it begins
2302 its output ("debugger invoked" and so forth).
2303 * The core version number and fasl file version number have both
2304 been incremented, because of incompatible changes in the layout
2306 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2307 used to not be called for a saved Lisp image.)
2308 * Martin Atzmueller's version of a patch to fix a compiler crash,
2309 as posted on sbcl-devel 13 September 2000, has been installed.
2310 * Instead of installing Martin Atzmueller's patch for the
2311 compiler transform for SUBSEQ, I deleted the compiler transform,
2312 and transforms for some similar consing operations.
2313 * A bug in signal handling which kept TRACE from working on OpenBSD
2315 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2316 away by constant folding
2317 * The system now defines its address space constants in one place
2318 (in the Lisp sources), and propagates them automatically elsewhere
2319 (through GENESIS and the sbcl.h file). Therefore, patching the
2320 address map is less unnecessarily tedious and error-prone. The
2321 Lisp names of address space constants have also been systematized.
2322 * CVS tags like dollar-Header-dollar have been removed from
2323 the sources, because they have never saved me trouble and
2324 they've been source of trouble working with patches and other
2325 diff-related operations.
2326 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2327 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2329 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2331 * The system has been ported to OpenBSD.
2332 * The system now compiles with a simple "sh make.sh" on the systems
2333 that it's supported on. I.e., now you no longer need to tweak
2334 text in the target-features.lisp-expr and symlinks in src/runtime/
2335 by hand, the make.sh takes care of it for you.
2336 * The system is no longer so grossly inefficient when compiling code
2337 involving vectors implemented as general (not simple) vectors (VECTOR T),
2338 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2339 which dares to use the various sequence functions on non-simple
2340 vectors, takes less of a performance hit.
2341 * There is now a primitive type predicate VECTOR-T-P
2342 to test for the (VECTOR T) type, so that e.g.
2343 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2344 can now be compiled with some semblance of efficiency. (The old code
2345 turned the type declaration into a full call to %TYPEP at runtime!)
2346 * AREF on (VECTOR T) is still not fast, since it's still compiled
2347 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2348 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2349 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2350 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2351 without making full calls to SUBTYPEP at runtime.
2352 (Some analogous efficiency issues for non-simple vectors specialized to
2353 element types other than T, or for non-simple multidimensional arrays,
2354 have not been addressed. They could almost certainly be handled the
2355 same way if anyone is motivated to do so.)
2356 * The changes in array handling break binary compatibility, so
2357 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2358 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2359 instead of (VALUES T T).
2360 * By following the instructions that Dan Barlow posted to sbcl-devel
2361 on 2 July 2000, I was able to enable primitive dynamic object
2362 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2363 functionality is not implemented (since it calls ld to resolve
2364 library references automatically, requiring RUN-PROGRAM for its
2365 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2366 try to resolve library references) is now supported.
2367 * The system now flushes the standard output streams when it terminates,
2368 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2369 them at several other probably-convenient times, e.g. in each pass of
2370 the toplevel read-eval-print loop, and after evaluating a form given
2371 as an "--eval" command-line option. (These changes were motivated by a
2372 discussion of stream flushing issues on cmucl-imp in August 2000.)
2373 * The source transform for TYPEP of array types no longer assumes
2374 that an array whose element type is a not-yet-defined type
2375 is implemented as an array of T, but instead punts, so that the
2376 type will be interpreted at runtime.
2377 * There is now some support for cross-compiling in make.sh: each of
2378 the phases of make.sh has its own script. (This should be transparent
2379 to people doing ordinary, non-cross-compile builds.)
2380 * Since my laptop doesn't have hundreds of megabytes of memory like
2381 my desktop machine, I became more motivated to do some items on
2382 my to-do list in order to reduce the size of the system a little:
2383 ** Arrange for various needed-only-at-cold-init things to be
2384 uninterned after cold init. To support this, those things have
2385 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2386 symbols with such names are now uninterned after cold init).
2387 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2388 fasl files for cold load.
2389 ** Remove the old compiler structure pooling code (which used to
2390 be conditional on the target feature :SB-ALLOC) completely.
2391 ** Redo the representation of some data in cold init to be more compact.
2392 (I also looked into supporting byte compiled code at bootstrap time,
2393 which would probably reduce the size of the system a lot, but that
2394 looked too complicated, so I punted for now.)
2395 * The maximum signal nesting depth in the src/runtime/ support code has
2396 been reduced from 4096 to 256. (I don't know any reason for the very
2397 large old value. If the new smaller value turns out to break something,
2398 I'll probably just bump it back up.)
2399 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2401 * Many, many bugs reported by Peter Van Eynde have been added to
2402 the BUGS list; some have even been fixed.
2403 * While enabling dynamic object file loading, I tried to make the
2404 code easier to understand, renaming various functions and variables
2405 with less ambiguous names, and changing some function calling
2406 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2407 * While trying to figure out how to do the OpenBSD port, I tried to
2408 clean up some of the code in src/runtime/. In particular, I dropped
2409 support for non-POSIX signal handling, added various comments,
2410 tweaked the code to reduce the number of compilation warnings, and
2411 renamed some files to increase consistency.
2412 * To support the new automatic configuration functionality in make.sh,
2413 the source file target-features.lisp-expr has been replaced with the
2414 source file base-target-features.lisp-expr and the machine-generated
2415 file local-target-features.lisp-expr.
2416 * fixed a stupid quoting error in make.sh so that using CMU CL
2417 "lisp -batch" as cross-compilation host works again
2419 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2421 * DESCRIBE no longer tries to call itself recursively to describe
2422 bound/fbound values, so that it no longer fails on symbols which are
2423 bound to themselves (like keywords, T, and NIL).
2424 * DESCRIBE now works on generic functions.
2425 * The printer now prints less-screwed-up representations of closures
2426 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2427 * A private symbol is used instead of the :EMPTY keyword previously
2428 used to mark empty slots in hash tables. Thus
2429 (DEFVAR *HT* (MAKE-HASH-TABLE))
2430 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2431 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2432 now does what ANSI says that it should. (You can still get
2433 similar noncompliant behavior if bang on the hash table
2434 implementation with all the symbols you get back from
2435 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2436 This breaks binary compatibility, since tests for equality to
2437 :EMPTY are wired into things like the macroexpansion of
2438 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2440 * There's now a minimal placeholder implementation for CL:STEP,
2441 as required by ANSI.
2442 * An obscure bug in the interaction of the normal compiler, the byte
2443 compiler, inlining, and structure predicates has been patched
2444 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2445 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2447 * Missing ordinary arguments in a macro call are now detected even
2448 when the macro lambda list contains &KEY or &REST.
2449 * The debugger no longer complains about encountering the top of the
2450 stack when you type "FRAME 0" to explicitly instruct it to go to
2451 the top of the stack. And it now prints the frame you request even
2452 if it's the current frame (instead of saying "You are here.").
2453 * As specified by ANSI, the system now always prints keywords
2454 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2456 * The default initial SIZE of HASH-TABLEs is now smaller.
2457 * Type information from CLOS class dispatch is now propagated
2458 into DEFMETHOD bodies, so that e.g.
2459 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2461 is now basically equivalent to
2462 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2463 (DECLARE (TYPE SINGLE-FLOAT X))
2465 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2466 operation, without having to do run-time type dispatch.
2467 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2468 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2469 * Since I don't seem to be making big file reorganizations very often
2470 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2471 is overflowing my ability to conveniently back them up), I've finally
2472 checked the system into CVS. (The CVS repository is on my home system,
2473 not at SourceForge -- putting it on SourceForge might come later.)
2474 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2475 high-level GC-NOTIFY-FOO functions send their output. (There's
2476 still very little control of where low-level verbose GC functions
2477 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2478 less than it used to -- the GC-NOTIFY-FOO functions are now under
2479 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2480 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2481 in only one place in the source code, and propagates it automatically
2482 everywhere that it's needed. Thus e.g. when I bump the version from
2483 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2484 * The C source files now include boilerplate legalese and documentation
2485 at the head of each file (just as the Lisp source files already did).
2486 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2487 to his page will be replaced with a link to his new CLiki service.
2489 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2491 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2492 * The build process now looks for GNU make under the default name "gmake",
2493 instead of "make" as it used to. If GNU make is not available as "gmake"
2494 on your system, you can change this default behavior by setting the
2495 GNUMAKE environment variable.
2496 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2497 can build without error under CMU CL.
2499 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2501 * There is now a partial SBCL user manual (with some new text and some
2502 text cribbed from the CMU CL manual).
2503 * The beginnings of a profiler have been added (starting with the
2504 CMU CL profiler and simplifying and cleaning up). Eventually the
2505 main interface should be through the TRACE macro, but for now,
2506 it's still accessed through vaguely CMU-CL-style functions and macros
2507 exported from the package SB-PROFILE.
2508 * Some problems left over from porting CMU CL to the new
2509 cross-compilation bootstrap process have been cleaned up:
2510 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2511 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2512 part when getting rid of the compiler *BACKEND* stuff.)
2513 ** The value of *NULL-TYPE* was screwed up, because it was
2514 being initialized before the type system knew the final
2515 definition of the 'NULL type. This screwed up several key
2516 optimizations in the compiler, causing inefficiency in all sorts
2517 of places. (I found it because I wanted to understand why
2518 GET-INTERNAL-RUN-TIME was consing.)
2519 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2520 PROCLAIM FTYPE information. Unfortunately this broke binary
2521 compatibility again, since now the forms output by DEFGENERIC
2522 to refer to functions which didn't exist in 0.6.3.
2523 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2524 can use the new (as of 0.6.3) transform for SOME into MAP into
2526 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2527 values to (INTEGER 0 1000000), so that the time code will no longer
2528 occasionally get blown up by Linux returning 1000000 microseconds
2529 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2530 its output conform to the ANSI spec. (Alas, this makes its output
2531 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2532 * A full call to MAP NIL with a single sequence argument no longer conses.
2533 * fixes to problems pointed out by Martin Atzmueller:
2534 * The manual page no longer talks about multiprocessing as though
2535 it were currently supported.
2536 * The ILISP support patches have been removed from the distribution,
2537 because as of version 5.10.1, ILISP now supports SBCL without us
2538 having to maintain patches.
2539 * added a modified version of Raymond Toy's recent CMU CL patch for
2540 EQUALP comparison of HASH-TABLE
2542 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2544 * The system still can't cross-compile itself with
2545 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2546 entails), but at least it can compile more of itself that way
2547 than it used to be able to, and various buglets which were uncovered
2548 by trying to cross-compile itself that way have now been fixed.
2549 * This release breaks binary compatibility again. This time
2550 at least I've incremented the FASL file format version to 2, so that the
2551 problem can be detected reliably instead of just causing weird errors.
2552 * various new style warnings:
2553 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2554 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2555 ** using the lexical binding of a variable named in the *FOO* style
2556 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2557 as specified by ANSI.
2558 * *RANDOM-STATE* is no longer automatically initialized from
2559 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2560 default behavior of the system is to repeat its behavior every time
2561 it's run. If you'd like to change this behavior, you can always
2562 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2563 old convention there was no comparably easy way to get the system to
2564 repeat its behavior every time it was run.
2565 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2566 FTYPE declarations has been removed, in favor of their ANSI
2567 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2568 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2569 the types of their sequence arguments can be determined at compile time.
2570 This is done through a new open code expansion for MAP which eliminates
2571 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2572 argument types can be determined at compile time.
2573 * The optimizer now transforms COERCE into an identity operation when it
2574 can prove that the coerced object is already of the correct type. (This
2575 can be a win for machine generated code, including the output of other
2576 optimization transforms, such as the MAP transform above.)
2577 * Credit information has been moved from source file headers into CREDITS.
2578 * Source file headers have been made more standard.
2579 * The CASE macro now compiles without complaining even when it has
2582 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2584 * (Note that the way that the PCL macroexpansions were rewritten
2585 to accommodate the change in DEFGENERIC below breaks binary
2586 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2587 not run under sbcl-0.6.2. Once we get out of alpha releases,
2588 i.e. hit release 1.0.0, we'll probably try to maintain binary
2589 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2590 and sbcl-1.4.4. Until then, however, it might be fairly common
2591 for maintenance releases to break binary compatibility.)
2592 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2594 * The reporting of unhandled signals has been changed to print some
2595 explanatory text as well as the report form. (Previously only
2596 the report form was printed.)
2597 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2598 it defines, so that the compiler no longer issues undefined function
2599 warnings for compiled-but-not-yet-loaded generic functions.
2600 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2601 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2602 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2603 section of the ANSI spec are supported.
2604 * The "" nickname for the "KEYWORD" package has been removed.
2605 The reader still handles symbol tokens which begin with a package marker
2606 as keywords, but it doesn't expose its mechanism for doing so in the
2607 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2608 * The system now issues STYLE-WARNINGs for contradictory TYPE
2609 proclamations. (Warnings for contradictory FTYPE proclamations would
2610 be nice too, but those can't be done usefully unless the type system
2611 is made smarter about FUNCTION types.)
2612 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2613 systematized, so that "*target-*.lisp is supposed to exist only on the
2614 target and imply that there's a related file which exists on the
2615 host, and *host-*.lisp is supposed to exist only on the host and imply
2616 that there's a related file which exists on the target. This involves a
2617 lot of renaming. Hopefully the acute confusion caused by the renaming
2618 will be justified by the reduction in chronic confusion..
2619 ** runtime-type.lisp -> early-target-type.lisp
2620 ** target-type.lisp -> late-target-type.lisp
2621 ** early-host-format.lisp -> early-format.lisp
2622 ** late-host-format.lisp -> late-format.lisp
2623 ** host-error.lisp -> misc-error.lisp
2624 ** early-error.lisp -> early-target-error.lisp
2625 ** late-error.lisp -> late-target-error.lisp
2626 ** host-defboot.lisp -> early-defboot.lisp
2627 ** code/misc.lisp -> code/target-misc.lisp
2628 ** code/host-misc.lisp -> code/misc.lisp
2629 ** code/numbers.lisp -> code/target-numbers.lisp
2630 ** code/early-numbers.lisp -> numbers.lisp
2631 ** early-host-type.lisp -> early-type.lisp
2632 ** late-host-type.lisp -> late-type.lisp
2633 ** host-typep.lisp -> typep.lisp
2634 ** load.lisp -> target-load.lisp
2635 ** host-load.lisp -> load.lisp
2636 ** host-disassem.lisp -> disassem.lisp
2637 ** host-insts.lisp -> insts.lisp
2638 ** byte-comp.lisp -> target-byte-comp.lisp
2639 ** host-byte-comp.lisp -> byte-comp.lisp
2640 ** host-signal.lisp -> signal.lisp
2641 ** host-defstruct.lisp -> defstruct.lisp
2642 ** late-target-type.lisp -> deftypes-for-target.lisp
2643 Furthermore, several other previously target-only files foo.lisp (e.g.
2644 hash-table.lisp and random.lisp) have been split into a target-and-host
2645 foo.lisp file and a target-only target-foo.lisp file, with their key type
2646 definitions in the target-and-host part, so that the cross-compiler will
2647 know more about target types.
2648 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2649 gone away. In their place are various *BACKEND-FOO* variables
2650 corresponding to the slots of the old structure.
2651 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2652 into the target SBCL has been fixed.
2653 * The chill.lisp system for loading cold code into a running SBCL
2655 * Support for the CMU CL "scavenger hook" extension has been removed.
2656 (It was undocumented and unused in the CMU CL sources that SBCL was
2657 derived from, and stale in sbcl-0.6.1.)
2658 * Various errors in the cross-compiler type system were detected
2659 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2660 (enabling various consistency checks). Many of them were fixed,
2661 but some hard problems remain, so the compiler is back to
2662 running without *TYPE-SYSTEM-INITIALIZED* for now.
2663 * As part of the cross-compiler type system cleanup, I implemented
2664 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2665 * I have started adding UNCROSS calls throughout the type system
2666 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2667 on cross-compiler input files will be able to go away, and various
2669 * CONSTANTP now returns true for quoted forms (as explicitly required
2672 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2674 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2675 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2676 (MAKE-LIST -1). In the longer term, it ought to become true
2677 that declarations are assertions even at SAFETY 1. For now, it's not
2678 quite true even at SAFETY 3, but it's at least more nearly true..
2679 (Note that this change seems to increases the size of the system by
2680 O(5%) and to decrease the speed of the compiler by 20% or more.)
2681 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2682 for the problem of printing dozens of lines of distracting information
2683 about low-level system machinery as part of the top stack frame
2684 on entry to the debugger when an undefined function was called.
2685 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2686 is not reset to COMMON-LISP-USER.
2687 * Compilation of stuff related to dyncount.lisp has been made conditional
2688 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2689 smaller. The various dyncount-related symbols have been moved into
2690 a new "SB-DYNCOUNT" package.
2691 * tty-inspect.lisp has been renamed to inspect.lisp.
2692 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2693 feature has gone away. (When we eventually port to other flavors of
2694 libc and/or Unix, we'll try to make the differences between flavors
2695 invisible at the user level.)
2696 * Various other *FEATURES* tags, and/or their associated conditionals,
2697 have been removed if obsolescent, or given better documentation, or
2698 sometimes given more-mnemonic names.
2700 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2702 * tidied up "make.sh" script
2703 * tidied up system directory structure
2704 * better "clean.sh" behavior
2705 * added doc/FOR-CMUCL-DEVELOPERS
2706 * many many small tweaks to output format, e.g. removing possibly-confusing
2707 trailing #\. character in DESCRIBE-INSTANCE
2708 * (EQUALP #\A 'A) no longer signals an error.
2709 * new hashing code, including EQUALP hashing
2710 * tidied up Lisp initialization and toplevel
2711 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2712 * command line argument processing
2713 * added POSIX-GETENV function to deal with Unix-ish environment variables
2714 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2715 terminating SBCL on EOF
2716 * non-verbose GC by default
2717 * There is no more "sbcl" shell script; the sbcl file is now the C
2718 runtime executable (just like CMU CL).
2719 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
2721 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
2722 symbol and package information as Lisp native symbol and package objects
2723 instead of strings naming symbols and strings naming packages. This way,
2724 whenever packages are renamed (as in warm init), debug information is
2725 transformed along with everything else.
2726 * tweaked the optimization policy declarations which control the building
2727 of SBCL itself. Now, among other things, the system no longer saves
2728 source location debugging information. (This helps two problems at once
2729 by reducing SBCL size and by keeping SBCL from trying to look for its
2730 sources -- which may not exist -- when reporting errors.)
2731 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
2732 debugging and testing purposes
2733 * cleaned up printing, making the printer call PRINT-OBJECT for
2734 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
2735 methods, giving nearly-ANSI behavior
2736 * converted almost all special variables to use *FOO* naming convention
2737 * deleted PARSE-TIME functionality, since it can be done portably
2738 * moved some files out of cold init into warm init
2739 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
2741 * regularized formatting of source files
2742 * added an install.sh script
2743 * fixed ridiculous memory usage of cross-compiler by making
2744 compiler/alloc.lisp not try to do pooling unless it can hook
2745 itself into the GC of the cross-compilation host. Now the system
2746 builds nicely on my old laptop.
2747 * added :SB-ALLOC in target-features.lisp-expr
2748 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
2749 was not implemented)
2750 * re-did condition handling and note reporting in the compiler. Notes
2751 are no longer handled by signalling conditions. Style warnings
2752 and warnings are handled more correctly and reported in such a way
2753 that it's easy to find one or the other in your output (so that you
2754 can e.g. figure out which of many problems caused COMPILE-FILE to
2756 * changed the severity of several compiler warnings from full WARNING
2757 to STYLE-WARNING in order to conform with the ANSI spec; also changed
2758 compiler note reporting so that it doesn't use the condition system
2759 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
2760 COMPILE-FILE command)
2761 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
2762 function. As a consequence, START-BLOCK and END-BLOCK declarations are
2763 no longer supported, since their implementation was deeply intertwingled
2764 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
2765 * removed bogus "support" for compiler macros named (SETF FOO), and
2766 removed the compiler macro for SETF INFO (but only after making a fool
2767 of myself on the cmucl-imp mailing list by posting a bogus patch for
2768 DEFINE-COMPILER-MACRO..)
2769 * Compiled files containing forms which have side effects on the Lisp
2770 reader (such as DEFPACKAGE forms) are now handled more correctly.
2771 (Compiler queuing of top level lambdas has been suppressed by setting
2772 *TOP-LEVEL-LAMBDA-MAX* to 0. )
2773 * deleted various currently-unused source files, e.g. gengc.lisp. They
2774 may be added back at some point e.g. when porting to other architectures,
2775 but until they are it's distracting to distribute them and to try to
2777 * deleted "UNCROSS couldn't recurse through.." style warnings, since
2778 there were so many of them they're just distractions, and UNCROSS is
2779 known to be able to handle the current sources
2780 * moved PROFILE functionality into TRACE, so that it will be clear
2781 how the wrapping and unwrapping of functions when you profile them
2782 interacts with the wrapping and unwrapping of functions when you
2783 trace them. (Actually, the functionality isn't there yet, but at least
2784 the interface specification is there. Hopefully, the functionality will
2785 arrive with some future maintenance release.)
2786 * removed host-oops.lisp
2787 * changed signature of QUIT function to allow UNIX-CODE argument
2788 * fixed READ-SEQUENCE bug
2789 * tweaked verbose GC output so that it looks more like the progress
2790 output that ANSI specifies for functions like LOAD
2791 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
2792 * added <http://sbcl.sourceforge.com> to the banner information printed by