1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3 * optimizations: REMOVE-DUPLICATES now runs in linear time on
4 lists in some cases. This partially fixes bug 384.
6 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
7 * New feature: Experimental support for bivalent streams: streams
8 opened with :element-type :default now allow character and binary
10 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
11 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
13 * bug fix: no more highly sporadic "couldn't check whether ~S is
14 readable" when reading a stream and an interrupt hits in the middle
15 of a select system call
16 * compiler better recognizes complex arrays (reported by Eduardo
18 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
19 for variables on SBCL built with linkage-tables. (reported by Luis
21 * various error reporting improvements.
22 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
23 (Thanks to Thiemo Seufer)
24 * bug fix: nested reader invokations work correctly
25 * bug fix: it is possible to have simultaneous references to foreign
26 code and foreign data with the same name.
28 ** added x86-64 support
29 ** incompatible change: the threading api now works with thread
30 objects instead of thread ids
31 ** bug fix: threads are protected from signals and interruption when
32 starting up or going down
33 ** bug fix: a race where an exiting thread could lose its stack to gc
34 ** bug fix: don't halt on infinite error in threads if possible
35 ** fixed numerous gc deadlocks introduced in the pthread merge
36 ** bug fix: fixed thread safety issues in read and print
37 ** bug fix: debugger doesn't hang on session lock if interrupted at
38 an inappropriate moment
39 ** bug fix: run-program is now thread safe(r)
40 ** bug fix: inner with-recursive-lock no longer releases the mutex
41 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
42 * fixed some bugs revealed by Paul Dietz' test suite:
43 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
44 EXPECTED-TYPE slots filled.
45 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
47 ** MAKE-CONDITION accepts classes as type-designators.
48 ** COMPILE may never return NIL.
49 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
50 range before calling Unix time functions
52 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
53 * numerous signal handling fixes to increase stability
54 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
55 * minor incompatible change: we now correctly canonize default
56 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
57 as per the MOP, rather than the historical (INITARG INITFUNCTION
58 INITFORM). (reported by Bruno Haible)
59 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
60 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
62 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
63 pathname is a directory pathname.
64 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
65 * dynamic space size on PPC has been increased to 768Mb. (thanks to
67 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
68 :METACLASS argument in addition to a class name. (reported by
69 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
70 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
71 (reported by Bruno Haible; patch from Gerd Moellmann)
72 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
74 * bug fix: more cleanups to the floating point exception handling on
75 x86-64 (thanks to James Knight)
76 * bug fix: the compiler does not try to constant fold calls of
77 COERCE and BIT-* functions when they return freshly constructed
78 objects. (reported by Nikodemus Siivola and Paul Dietz)
79 * optimization: improved the MIPS versions of generic (in the
80 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
81 * optimization: direct conversion of (unsigned-byte 32) to floats on
83 * optimization: structure instances with raw slots now use less
84 memory, and probably show better memory locality. (thanks to
86 * optimization: DYNAMIC-EXTENT declarations for lists and closures
87 are treated as requests for stack allocation on the x86-64,
88 Alpha-32, PPC and SPARC platforms.
89 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
90 the wrong file descriptor; implementation of SOCKET-OPEN-P.
91 (thanks to Tony Martinez)
93 ** gcing a dead thread can no longer lead to lockups
94 ** threads block signals until they are set up properly
95 ** errno is no longer shared by threads
96 ** interrupt-thread restores the eflags register on x86
97 ** fixed some lockups due to gc/thread interaction
98 * fixed some bugs revealed by Paul Dietz' test suite:
99 ** invalid dotted lists no longer raise a read error when
101 ** signal an error if a symbol that names a declaration is used
102 as the name of a type, or vice versa
103 ** allow using the (declare (typespec var*)) abbreviation for
104 (declare (type typespec var*)) with all type specifiers
105 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
106 ** always return NIL from PPRINT-POP when OBJECT is NIL
107 ** don't signal errors when pretty-printing malformed LABELS,
108 FLET or MACROLET forms
109 ** declarations in a DOLIST body are also in scope for the
111 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
113 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
116 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
117 * fixed cross-compiler leakages that prevented building a 32-bit
118 target with a 64-bit host compiler.
119 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
120 opened with :IF-EXISTS :OVERWRITE.
121 * fixed bug 281: error for an invalid qualifier in a short-form method
122 combination method is not signalled until the faulty method is called.
123 * bug fix: iteration variable type inferrer failed to deal with open
124 intervals. (reported by Alan Shields)
125 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
126 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
127 or more runtime options were provided to the sbcl binary.
128 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
129 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
130 * optimization: there's now a fast-path for fixnum arguments in the
131 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
132 * optimization: the code generated on x86-64 is more compact thanks
133 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
134 * bug fix: floating-point exception handling now partly works on
135 x86-64. (Thanks to James Knight)
136 * improvement to the MIPS backend from Thiemo Seufer: C-style
137 64-bit long long arguments and return values to alien functions
139 * fixed some bugs revealed by Paul Dietz' test suite:
140 ** the type-error signalled from WARN has a filled-in DATUM slot.
141 ** the type-error required when a stream is not associated with
142 a file has the stream as its datum.
143 ** type-errors on single-floats on x86-64 no longer have
144 :INVALID-OBJECT as the datum
145 ** the type-errors signalled for invalid function names now have
146 a correct expected type
147 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
148 for structures defined with a :TYPE. Documentation strings for
149 typed structures are no longer immediately discarded
150 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
151 broadcast streams and synonym streams. FILE-LENGTH now also works
152 on broadcast streams.
154 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
155 * incompatible change: the --noprogrammer option, deprecated since
156 version 0.7.5, has been removed. Please use the equivalent
157 --disable-debugger option instead.
158 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
160 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
161 inoperational for a while now) has been completely removed.
162 * null lexical environments are now printed as #<NULL-LEXENV>,
163 significantly reducing the amount of clutter in typical backtraces.
164 * documentation on weak pointers, finalization, and after GC hooks
165 has been added to the manual.
166 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
167 as other specialized array types, is much faster. SUBSEQ and
168 COPY-SEQ on such arrays have also been sped up.
169 * optimization: EQL is now more efficient when at least other argument
170 is known to be of type (OR FIXNUM (NOT NUMBER)).
171 * fixed bug: the runtime is now less vulnerable to changes in the
172 size of the SBCL object on OS X, and virtual memory is reserved for
173 all spaces that need to be at a fixed address.
174 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
175 * fixed bug: finalizers and after GC hooks that cause consing are now
177 * fixed bug: compiler error messages and summaries are now printed to
178 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
179 * fixed inference of the upper bound of an iteration variable.
180 (reported by Rajat Datta).
181 * fixed bug 211e: calling local functions with duplicated constant
182 keyword argument no longer causes a bogus style warning about an
184 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
185 ftype declaration to be disregarded. (reported by Dave Roberts)
186 * fixed bug 373: caused by erronous compilation of references to alien
187 variables in the runtime on ppc/darwin.
188 * fixed bug 376: CONJUGATE type deriver.
189 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
190 (reported by Baughn on #lisp)
191 * a cross-compiler bug on non-x86 platforms has been identified and
192 fixed. (thanks to Bruno Haible)
193 * improvements to the MIPS runtime code for increased stability.
194 (thanks to Thiemo Seufer)
195 * increased the maximimum compact environment size to allow
196 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
197 * partial workaround for bug 135: don't name the function we're
198 calling for hairy cases of EVAL, so as not to accumulate one environment
199 entry per call to EVAL. (reported by Kevin Reid)
200 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
201 * optimization: type testing for non-vector arrays should be faster.
202 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
204 * bug fix: setting 31st element of a bit vector to zero did not work
206 * bug fix: redefining a class definition which failed due to a
207 previous accessor / function clash now works (but see BUGS entry
208 #380 for more problems in this area). (thanks to Zach Beane)
209 * the long form of DEFINE-METHOD-COMBINATION disables method group
210 checking when given a single method group with pattern *. (thanks
212 * on x86 compiler supports stack allocation of results of simple
213 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
214 * support for building and running on Mac OS X 10.4 "Tiger" has been added
215 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
216 * fixed some bugs related to Unicode integration:
217 ** the restarts for recovering from input and output encoding
218 errors only appear when there is in fact such an error to
220 * fixed some bugs revealed by Paul Dietz' test suite:
221 ** MISC.549 and similar: late transformation of unsafe type
222 assertions into derived types caused unexpected code
224 ** SCALE-FLOAT type deriver is less wrong.
225 ** type derivers for EXP, LOG and similar functions compute result
226 types for complex arguments better.
227 ** (MISC.563) CONJUGATE type deriver works for very restricted
229 ** out-of-line type testers for character strings are available.
230 ** EQUAL compiler transform understands specialness of objects
232 ** accessing double-floats stored on the stack now works on x86-64.
233 ** debugger internals could sometimes create invalid lispobjs,
234 resulting in GC crashes.
235 ** MISC.548: type check weakening can convert required type into
237 ** initialization forms for bindings are not in scope of free special
240 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
241 * incompatible change: thread support for non-NPTL systems has
242 been removed - locking is buggy and unreliable. A threaded
243 SBCL build will now warn at startup and refuse to create
244 new threads, unless futex support is detected in the kernel
245 * incompatible change: the top level REPL now has only an ABORT
246 restart associated with it, not TOPLEVEL and ABORT as it used to.
247 TOP and TOPLEVEL are now available as debugger commands for
248 returning to the top level.
249 * incompatible change: forms evaluated in the REPL now use the
250 global optimization policy.
251 * incompatible change: user- and system-initialization files are
252 no longer processed with LOAD, but by READ and EVAL; hence the
253 global optimization policy, startup package, readtable, etc,
255 * The .fasl file format number has been incremented because of
256 various incompatible changes.
257 * internal entry point details and argument counts no longer appear
258 in backtraces unless explicitly requested by setting
259 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
260 * built-in and standard functions no longer have names like "top
261 level local call to FOO".
262 * fixed bug 32: functions defined in non-null lexical environments
263 now have more legible printed representation
264 * fixed bug 33: functions defined in non-null lexical environemnts
265 are now more amenable to inspection by INSPECT.
266 * workaround for bug 354: XEPs no longer appear in backtraces unless
267 explicitly requested.
268 * fixed bug: receiving the signal which results from attempting to
269 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
270 SIGBUS on other *BSDs) on architectures where the C stack is also
271 the Lisp stack (x86 and x86-64) from foreign code no longer leads
272 to debugger confusion or wild instability. (reported by Cheuksan
274 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
275 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
276 (reported by Lutz Euler)
277 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
278 compiled code. (reported by Paul Dietz)
279 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
280 specialized parameter to a method to something that is not TYPEP
281 the specializer is now possible.
282 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
283 face of package deletion.
284 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
285 pathname. (reported by David Tolpin on c.l.l)
286 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
287 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
288 STRING-STREAM and FILE-STREAM, respectively.
289 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
290 than previously; in addition, its test suite is now run on build.
291 (thanks to Luke Gorrie)
292 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
293 * optimization: added a immediate representation for single-floats
295 * fixed some bugs revealed by Paul Dietz' test suite:
296 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
297 ** attempting to create a package with a colliding nickname causes
298 correctable errors to be signalled.
299 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
300 ** several x86-64 backend bugs related to sign-extension of immediate
303 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
304 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
305 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
307 * fixed loading of multiply forward-referenced layouts.
308 (thanks to Cheuksan Wang)
309 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
310 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
311 (see COMPILE-FILE documentation for details of :PRINT option)
312 * fixed bugs 19 and 317: fixed-format floating point printing is
313 more accurate. This also fixes a bug reported by Adam Warner
314 related to the ~@F format directive.
315 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
317 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
318 dispatch table if the from-char is a dispatch macro character.
319 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
320 by the wordsize no longer ignore the last word. (reported by Lutz
322 * fixed bug in type checking of dynamic-extent variables. (reported
324 * optimization: sequence traversal functions use their freedom to
325 coerce function designators to functions.
326 * optimization: code with many calls to CLOS methods specialized on
327 CLOS classes has had redundant type checks removed.
328 * optimization: added declarations to speed up operations that access
329 the internal character database (for example STRING-UPCASE)
330 * optimization: comparison operations between floats and sufficiently small
331 fixnums no longer create extra rationals
332 * fixed some bugs related to Unicode integration:
333 ** portions of multibyte characters at the end of buffers for
334 character-based file input are correctly transferred to the
335 start of the buffer at the next read.
336 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
337 passing it through to OPEN.
338 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
339 argument given to internal calls to OPEN.
340 ** the built-in comment readers (introduced by character sequences
341 ";" and "#|") are more forgiving to encoding errors; they will
342 STYLE-WARN and then attempt to resync the stream at a character
343 boundary. (thanks to Teemu Kalvas)
344 * fixed some bugs in the x86-64 port:
345 ** Negative short int return values from c-calls are sign-extended
347 ** The stack is aligned to 16-bytes for c-calls, as required by
348 the ABI. (thanks to Cheuksan Wang)
349 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
350 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
351 for enums. (thanks to Vincent Arkesteijn)
352 ** Multiple small optimizations and bugfixes for floating point
354 * fixed some bugs revealed by Paul Dietz' test suite:
355 ** Space, Tab, Linefeed, Return and Page have the invalid
356 secondary constituent character trait.
357 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
359 ** WITH-INPUT-FROM-STRING should only update the index place on
361 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
363 ** Bit-array operations (BIT-AND and similar) worked incorrectly
364 with one-dimensional arrays with fill pointers.
365 ** TYPE-OF failed on a complex with an integer realpart and a
367 ** compiler failure during type inference for the code of form
368 (IF (EQL X (THE ...)) ...) (MISC.535).
370 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
371 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
372 platform. The port supports 61-bit fixnums, large memory spaces
373 and reloading shared object files.
374 * enhancement: saving cores with foreign code loaded is now
375 supported on ppc/Darwin in addition to the previously supported
377 * enhancement: the statistical profiler now walks deeper into the
378 call stack for more meaningful call-graphs and accrued time
379 reports (x86/x86-64 only). It also now reports time spent in
381 * enhancement: it is now possible to trace most individual methods
382 of a generic function in addition to tracing the generic function
384 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
386 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
387 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
388 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
389 produces an error. (thanks to Vincent Arkesteijn)
390 * bug fix: NAMESTRING on pathnames with :WILD components in their
391 directories works correctly. (thanks to Artem V. Andreev)
392 * fixed bug 125: compiler preserves identity of closures. (reported
394 * bug fixed: functions with &REST arguments sometimes failed with
395 "Undefined function" when compiled with (DEBUG 3). (reported by
397 * bug fix: overflow during compiling of setting element of a bit
398 vector with constant index and value. (reported by Timmy Douglas)
399 * build fix: fixed the dependence on *LOAD-PATHNAME* and
400 *COMPILE-FILE-PATHNAME* being absolute pathnames.
401 * on x86 compiler partially supports stack allocation of dynamic-extent
403 * GO and RETURN-FROM do not check the extent of their exit points
404 when compiled with SAFETY 0.
405 * fixed some bugs related to Unicode integration:
406 ** encoding and decoding errors are now much more robustly
407 handled; it should now be possible to recover even from invalid
408 input or output to the terminal. (thanks to Teemu Kalvas)
409 ** provided a first cut at implementing STRING-TO-OCTETS and
410 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
411 ** altered the SB-MD5 contributed module slightly, changing the
412 interface just enough for it to be supportable for builds where
413 lisp characters are not eight bits.
414 * fixed some bugs revealed by Paul Dietz' test suite:
415 ** the FORMATTER-generated functions for ~V[ conditionals require
416 the correct number of arguments.
417 ** READ-FROM-STRING returns the mandated second value when applied
418 to displaced strings.
419 ** the #\Rubout and #\Backspace characters are treated as invalid
420 constituent characters by the tokenizer.
422 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
423 * new feature: reloading changed shared object files with
424 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
425 * new feature: references to foreign variables and functions
426 can now be compiled and loaded before the corresponding shared
427 object file is loaded, as long as the foreign definitions are
428 available at runtime.
429 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
430 supported. (thanks to Dan Debertin)
431 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
432 just keywords. (thanks to Vincent Arkesteijn)
433 * fixed bug #331: structure-class instances corresponding to
434 DEFSTRUCT forms are now created eagerly.
435 * fixed bug #345: backtraces from calls to undefined functions work
436 on x86 as well. Related bug #61 is now also partially fixed on x86
437 (backtraces from throws to unknown catch tags.)
438 * bug fix: lambda-list parsing is now stricter vrt. order and number
439 of lambda-list keywords.
440 * bug fix: as specified by AMOP, an error is signalled if a
441 class-option appears multiple times in a DEFCLASS form. (reported
443 * bug fix: RANDOM can be compiled when the compiler derives the type
444 of its numeric argument as a disjoint set of small integers.
445 (reported by Paul Dietz)
446 * bug fix: starting a core saved with shared objects loaded when
447 those objects are not available no longer causes threaded SBCL to
448 hang. (reported by Sean Ross)
449 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
451 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
452 argument, which must always be NIL. (reported by Kalle Niemitalo)
453 * bug fix: printing 1.0d+23 no longer results in an error.
454 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
455 * bug fix: structure slot setters preserve evaluation order. (thanks
457 * fixed some bugs related to Unicode integration:
458 ** RUN-PROGRAM can allow its child to take input from a Lisp
459 stream. (reported by Stefan Scholl)
460 ** ASDF-INSTALL successfully downloads .tar.gz files in all
461 locales. (reported by Ken Causey)
462 * fixed some bugs revealed by Paul Dietz' test suite:
463 ** INCF, DECF and REMF evaluate their place form as specified in
465 ** FORMATTER expands ~{ ~} iteration directives with V or #
466 parameters correctly.
467 ** FORMATTER deals with the ~@[ ~] conditional directive where the
468 consequent uses no arguments correctly.
469 ** the system has a partial understanding of the (COMPLEX RATIO)
471 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
474 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
475 * new feature: a build-time option (controlled by the :SB-UNICODE
476 keyword feature, enabled by default) for building the system with
477 support for the entire 21-bit character space defined by the
479 * new feature: the system now has rudimentary external-format
480 support; the primary user-visible change at this time is that
481 characters with the high bit set (such as lower-case-e-acute) will
482 print correctly to a terminal in a UTF-8 environment.
483 * minor incompatible change: BASE-CHAR no longer names a class;
484 however, CHARACTER continues to do so, as required by ANSI.
485 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
486 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
487 has been moved to the SB-EXT package (temporarily re-exported from
489 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
490 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
492 * fixed bug #351: better error-handlind and reporting for malformed
494 * fixed bug #350: bignum-printing is now more memory-efficient,
495 allowing printing of very large bignums, eg. (expt 2 10000000).
496 (reported by Bruno Haible)
497 * fixed bug #302: better primitive-type selection for intersection
499 * fixed bug #308: non-graphic characters now all have names, as
500 required. (reported by Bruno Haible)
501 * bug fix: redefining a class with different superclasses now correctly
502 removes it from the direct-subclasses of its previous superclasses.
503 (reported by David Morse)
504 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
505 new value now works. (reported by Bruno Haible)
506 * bug fix: correct canonicalization of multiple non-standard slot
507 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
508 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
509 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
510 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
511 now exists, an signals an error.
512 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
513 during macroexpansion for non-iteration variables as well. (reported
514 by Bruno Haible for CMUCL)
515 * bug fix: Cyclic structures and unprintable objects in compiler
516 messages no longer cause errors. (reported by Bruno Haible)
517 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
518 and READ-FROM-STRING all now return a primary value of NIL if
519 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
520 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
521 (reported by Bruno Haible for CMUCL)
522 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
523 do not designate a condition. (reported by Bruno Haible for
525 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
526 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
527 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
528 permitting resolution in favour of any of the conflicting symbols.
529 (reported by Bruno Haible for CMUCL)
530 * bug fix: EQUAL compiler optimizations is less aggressive on
531 strings which can potentially compare true despite having distinct
532 specialized array element types.
533 * bug fix: unit enumerations can be defined without dividing by
534 zero. (thanks to Vincent Arkesteijn)
535 * FORMAT compile-time argument count checking has been enhanced.
536 (report from Bruno Haible for CMUCL)
537 * a partial workaround for the bug 262: the compiler does not try to
538 inline-expand a local function doing RETURN-FROM from a deleted
539 BLOCK. (thanks to Peter Denno for the bug report and to David
540 Wragg for the simple test case)
541 * fixed some bugs revealed by Paul Dietz' test suite:
542 ** RENAME-PACKAGE allows all package designators as new package
544 ** constraint propagation and lambda variable substitution are
545 more cautious in dealing with partially deleted code.
546 ** compiler sometimes lost reoptimization passes.
547 ** CERROR, given a condition as condition designator, passes its
548 remaining arguments to the continue format control without
550 ** Case-altering FORMAT directives work correctly on non-ASCII
552 ** The REAL type specifier handles bounds outside the floating
553 point ranges without signalling FLOATING-POINT-OVERFLOW.
554 ** Functions with IR1-transformations can create intercomponent
555 references to global functions.
556 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
558 ** FORMAT ~R treats a nil value for its first parameter correctly.
560 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
561 * enhancement: saving cores with foreign code loaded is now
562 supported on x86/NetBSD and sparc/Linux in addition to the previously
564 * bug fix: on some platforms repeated installations caused multiple
565 copies of HTML documentation to be installed -- should not happen
566 any more. (reported by Stefan Scholl)
567 * bug fix: parsing self-recursive alien record types multiple times
568 no longer causes infinite recursion. (reported by Thomas F. Burdick,
569 original patch by Helmut Eller for CMUCL)
570 * bug fix: stack-exhaustion detection works now on NetBSD as well.
571 (thanks to Richard Kreuter)
572 * bug fix: defining classes whose accessors are methods on existing
573 generic functions in other (locked) packages no longer signals
574 bogus package lock violations. (reported by François-René Rideau)
575 * bug fix: special variables as DEFMETHOD parameters no longer have
576 associated bogus type declarations. (reported by David Wragg and
578 * bug fix: read-write consistency on streams of element-type
579 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
580 * bug fix: redefiniton of the only method of a generic function with
581 no DEFGENERIC no longer emits a full WARNING. In addition,
582 redefinition of generic functions with no DEFGENERIC to an
583 incompatible lambda list now signals an error. (thanks to Zach
585 * bug fix: DEFGENERIC now works even when there's a function of the
586 same name in an enclosing lexical environment. (thanks to Zach
588 * fixed compiler failure, caused by instrumenting code during
589 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
590 * optimization: added loop analysis and improved register allocation
591 * fixed some bugs revealed by Paul Dietz' test suite:
592 ** POSITION on displaced vectors with non-zero displacement
593 returns the right answer.
594 ** (SIMPLE-STRING) is a valid type specifier for sequence
596 ** *PRINT-LEVEL* handling for slotless structures is pedantically
598 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
599 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
601 ** The justification version of the FORMAT ~< directive treats
602 non-zero minpad parameter correctly.
604 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
605 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
606 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
607 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
608 the supported interface.
609 * new feature: Single-stepping of code compiled with DEBUG 2 or
610 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
611 * new feature: saving cores with foreign code loaded is now
612 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
613 Timothy Moore's work for CMUCL)
614 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
615 parameters to * instead of NIL if no initform is supplied.
616 (reported by Johan Bockgaard)
617 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
618 correctly when FUNCALL appears as the car of the form. Note:
619 despite this FUNCALL forms are not currently subject to
620 compiler-macro expansion. (port of Raymond Toy's fix for the
621 same from CMUCL, reported by Johan Bockgaard)
622 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
623 (thanks for Teemu Kalvas)
624 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
625 case instead of terminating the iteration (thanks for Julian
626 Squires, Sean Champ and Raymond Toy)
627 * bug fix: incorrect expansion of defgeneric that caused a style
628 warning. (thanks for Zach Beane)
629 * bug fix: slot accessor effective method computation works properly
630 for classes with multiple non-standard applicable methods on
631 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
632 * on x86 compiler supports stack allocation of results of LIST and
633 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
634 CMUCL implementation by Gerd Moellmann)
635 * fixed some bugs revealed by Paul Dietz' test suite:
636 ** FORMAT strings with both the ~<~:;~> form of the justification
637 directive and pretty-printing directives cause an error.
639 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
640 * incompatible change: the internal functions
641 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
642 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
643 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
644 instead of the old functions.
645 * new feature: on platforms where "dladdr" is available foreign
646 function names now appear in backtraces. (based on Helmut Eller's
648 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
649 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
651 * documentation: ASDF manual is now distributed with SBCL.
652 * bug fix: SBCL can now load its contributed modules with REQUIRE
653 even if the system-provided entries have been removed from
654 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
656 * bug fix: backtraces involving undefined functions or assembly
657 routines are more informative. (thanks to Brian Downing)
658 * bug fix: mutually referent alien structures now work correctly.
659 (reported by Rick Taube)
660 * bug fix: structures defined by WITH-ALIEN can be referred to
661 within other definitions in the same WITH-ALIEN.
662 * bug fix: division operators (MOD, TRUNCATE and the like) with
663 constant zero divisors and integer dividends no longer generate
665 * bug fix: provide default methods for INPUT-STREAM-P and
666 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
667 * bug fix: improve the detection and resolution of MOP metacycles
668 (where effective method computation depends on the generic function
669 having its effective method computed). (reported by Bruno Haible)
670 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
671 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
672 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
673 * bug fix: pathnames with relative directory components can be
674 represented relative to default pathnames.
675 * optimization: in taking the GCD of bignums, reduce the two bignums
676 to approximately the same size (using Euclid's algorithm) before
677 applying the more sophisticated binary GCD. (thanks to Juho
679 * optimization: COUNT on bitvectors now operates word-at-a-time.
680 * optimization: ASH with a positive, but not necessarily constant,
681 (leftwards) shift, when in a modular context, is compiled to a
683 * fixed some bugs revealed by Paul Dietz' test suite:
684 ** FORMAT variable parameters ("~V<char>") are defaulted properly
685 if the corresponding argument is NIL.
686 ** FORMAT directives accepting a minpad parameter treat negative
688 ** literal commas as character parameters to FORMAT directives are
690 ** literal spaces directly after ~<Newline> directives within a
691 format-logical-block (~:< ~@:>) do not induce :FILL-style
692 conditional newlines.
693 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
694 as specified: it no longer includes conditional newlines).
695 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
697 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
698 :PER-LINE-PREFIX argument does not evaluate to a string.
700 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
701 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
702 the manual for details; for now, package locks can be disabled by
703 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
704 if no major problems are found then it is likely that they will be
705 compiled in unconditionally.
706 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
707 unsupported operators on all platforms. To load a shared library
708 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
709 object file, link it into a shared library outside of SBCL and
710 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
712 * bug workaround: ROOM T and the GC were not working together
713 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
714 reporting facility aren't preserved. That reporting has been
715 disabled, so now until and unless someone figures out how to make it
716 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
717 * minor incompatible change: as threatened around sbcl-0.8.0, the
718 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
719 The symbols are also exported from SB-PCL for backwards
720 compatibility, but more so than before SB-PCL should be treated as
721 an implementation-internal package.
722 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
724 * the SB-SPROF contrib now works on (most) non-x86 architectures.
725 It is known as of this release not to work on the Alpha, however.
726 * fixed bug #167: errors signalled due to illegal syntax in method
727 bodies are now more legible.
728 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
729 designators and can hence be used with TYPEP.
730 * fixed bug #333: CHECK-TYPE now ensures that the type error
731 signalled, if any, has the right object to be accessed by
732 TYPE-ERROR-DATUM. (reported by Tony Martinez)
733 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
734 5.1.2.3 for multiple-value place subforms. (reported by Kalle
736 * fixed bug #334: programmatic addition of slots using specialized
737 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
738 and :ALLOCATION :CLASS slots.
739 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
740 float exponents. (rereported by Peter Seibel)
741 * fixed a bug: #\Space (and other whitespace characters) are no
742 longer considered to be macro characters in standard syntax by
744 * fixed bug: initialization of condition class metaobjects no longer
745 causes an instance of the condition to be created. (reported by
747 * fixed bug: it is now possible to have slots such that
748 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
749 description is neither :INSTANCE nor :CLASS.
750 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
751 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
752 SLOT-VALUE-USING-CLASS), and no longer causes errors with
753 non-standard SLOT-DEFINITION-ALLOCATION values.
754 * fixed bugs: various race conditions handling exiting threads.
755 CL-PPCRE's thread torture test now passes.
756 * fixed arguably-a-bug: GC time proportional to number of threads in
757 system even when most of them are idle
758 * optimization: improved performance of BIT and SBIT on bit-vectors.
759 * .fasl file incompatibility: The fasl file version number has
760 been incremented because of changes associated with package locks.
762 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
763 * minor incompatible change: the system no longer provides
764 optimization hints (conditions which are TYPEP
765 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
766 mode; these hints are still emitted when higher SPEED optimization
768 * new contrib module: a sampling profiler (profiling by statistical
769 sampling, rather than by instrumenting functions) is available as
770 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
771 * the behaviour of the standard function ED is now customizeable by
772 third parties through a hook variable: see ED's documentation
773 string for information on the protocol.
774 * the compiler no longer emits efficiency notes for (FUNCALL X)
775 when the type of X is uncertain under default optimization
777 * fixed bug 276: mutating a binding of a specialized parameter to a
778 method to something that is not TYPEP the specializer is now
780 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
781 exhibit the required behaviour on the x86 platform. (thanks to
782 Peter van Eynde, Eric Marsden and Bruno Haible)
783 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
784 even for difficult arguments. (reported by Peter Graves)
785 * fixed bug 141a: the backquote printer now descends quoted
787 * fixed another bug in backquote printing: no more destructive
788 modification of the form's list structure. (reported by Brian
790 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
791 move between its address being taken and the call to
792 interrupt_thread, fixing a crashing race condition.
793 * the SB-POSIX contrib implementation has been adjusted so that it
794 no longer exhibits ridiculously poor performance when constructing
795 instances corresponding to C structs.
797 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
798 * minor incompatible change: the sb-grovel contrib now treats C
799 structures as alien (in the sense of SB-ALIEN) objects rather than
800 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
801 has implications for memory management of client code
802 (sb-grovel-returned objects must now be manually managed) and for
803 type safety (alien objects now have full types).
804 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
805 used to control emission of compiler diagnostics, rather than the
806 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
807 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
808 quality should be considered deprecated.
809 * install.sh now installs the user manual as well
810 * (not quite a new documentable feature, but worth considering in
811 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
812 beginnings of a semantically meaningful condition hierarchy is
813 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
815 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
816 designator as the defaults argument.
817 * fixed bug: Displaced arrays whose displaced-to array has become
818 too small now cause ARRAY-DIMENSION to signal an error, providing
819 for safer bounds-checking. (reported by Bruno Haible)
820 * fixed bug: DEFCLASS slot definitions with identical :READER and
821 :WRITER names now signal a reasonable error. (reported by Thomas
823 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
825 * fixed bug: Invalid slot specification errors now print correctly.
826 (thanks to Zach Beane)
827 * fixed bug 320: Shared to local slot value transfers in class
828 redefinitions now happen corrently from superclasses as
829 well. (reported by Bruno Haible)
830 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
832 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
833 improper lists correctly. (reported by Bruno Haible)
834 * fixed bug 313: source-transform for <fun-name> was erroneously
835 applied to a call of a value of a variable with name <fun-name>.
836 (reported by Antonio Menezes Leitao)
837 * fixed bug 307: The obsolete instance protocol ensures that
838 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
839 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
840 remove dead unknown-values globs from the middle of the stack.
841 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
842 easier to resume long computations after using *BREAK-ON-SIGNALS*
843 to diagnose and fix failures. (thanks to Nikodemus Siivola)
844 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
845 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
846 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
847 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
848 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
850 * fixed a (fairly theoretical) bug in string printing: if
851 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
852 does not have array-element-type equal to the most general string
854 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
855 function name. (thanks to Nikodemus Siivola)
856 * fixed bug: compile-time format string checker failed on
857 non-closed ~{. (reported by Thomas F Burdick)
858 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
859 don't warn on legal loop code involving more than one aggregate
860 boolean. (thanks to Nikodemus Siivola)
861 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
862 in keyword position to MAKE-PACKAGE was not being reported as
864 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
865 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
867 * fixed bugs 280 and 312: the checking for multiple definitions in a
868 file is less likely to become confused by uses of inline
870 * fixed bug: the #S reader macro performs the keyword coercion
871 specified for slot names. (reported by Kalle Niemitalo)
872 * fixed bug: lambda lists may contain symbols whose names start with
873 & but are not lambda-list-keywords; their occurrence triggers a
875 * fixed bug 321: define-method-combination argument lambda lists do
876 not cause invalid code to be generated when &optional or &aux
877 variables have default values. (reported by Bruno Haible)
878 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
879 have CLOS classes; this appears also to have fixed reported
880 instability in stack exhaustion detection.
881 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
882 MUFFLE-WARNING when no associated restart is present is now
884 * optimization: rearranged the expansion of various defining macros
885 so that each expands into only one top-level form in a
886 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
888 * optimization: used a previously little-used slot in symbols to
889 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
891 * fixed some bugs revealed by Paul Dietz' test suite:
892 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
894 ** Fixed an optimization bug related to inheritance of initforms
895 from local to shared slots.
896 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
897 ** CAST optimizer forgot to flush argument derived type.
898 ** print/read consistency on floats is now orders of magnitude
899 more likely. (thanks also to Bruno Haible for a similar report
901 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
902 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
903 for objects of type REAL. Make it so.
904 ** SXHASH is specified (infelicitously) to respect similarity,
905 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
906 it so. (thanks to Markus Ziegler)
907 ** on the Alpha, the compiler succeeds in compiling functions
908 returning a known number of arguments greater than 63.
909 ** fixed handling of invalid NIL arguments in keyword position
911 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
913 ** provided a readably-printable representation for RANDOM-STATE
915 ** ensured that pathnames, where they have a namestring, always
916 print using #P"..." syntax.
918 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
919 * Support for the forthcoming 2.0 version of the NetBSD kernel
920 running on x86 hardware has been added. (thanks to Perry
921 E. Metzger most immediately, and others for their past work)
922 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
923 current release version; SBCL's OpenBSD support had been broken
924 since about the time of OpenBSD's switch to ELF binary format.)
925 * [placeholder for DX summary]
926 ** user code with &REST lists declared dynamic-extent, under high
927 speed or space and low safety and debug optimization policy.
928 * The manual has been converted to Texinfo format and the debugger
929 chapter from the cmucl manual has been added.
930 * A facility has been added to extract documentation strings from
931 sbcl and store them as Texinfo-formatted snippets for inclusion in
932 the manual (via Texinfo's @include directive)
933 * bug fix: compiler emitted division in optimized DEREF. (thanks for
934 the test case to Dave Roberts)
935 * bug fix: multidimensional simple arrays loaded from FASLs had fill
936 pointers. (reported by Sean Ross)
937 * bug fix: PROFILE output is printed nicely even for large numerical
938 values. (thanks to Zach Beane)
939 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
940 greater than 32 handle EOF correctly.
941 * bug fix: on X86 an immediate argument of the IMUL instruction is
942 correctly printed in disassembly. (thanks to Lutz Euler)
943 * bug fix: class slots in redefined classes preserve their old
944 values. (thanks to Bruno Haible and Nikodemus Siivola)
945 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
946 succeeds. (reported by Marco Baringer)
947 * fixed some bugs revealed by Paul Dietz' test suite:
948 ** READ-SEQUENCE now works on ECHO-STREAMs.
949 ** RATIONALIZE works more according to its specification. (thanks
952 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
953 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
954 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
955 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
956 should matter to you only if you rebind the printer control
957 variables and then find you want different bindings in the
958 debugger than in the ordinary execution of your program.)
959 * The runtime build system has been tweaked to support building
960 (on SPARC/SunOS) using a C compiler which invokes Sun's own
961 assembler and linker. (thanks to Nikodemus Siivola)
962 * Unbound, undefined, undeclared variables now trigger full
963 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
964 more often programmer error than deliberate exploitation of undefined
966 * optimization: the hash algorithm for strings has changed to one
967 that is less vulnerable to spurious collisions. (thanks to Juho
969 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
970 needless bounds checking. (thanks to Juho Snellman)
971 * optimization: implemented multiplication as a modular
972 (UNSIGNED-BYTE 32) operation on the PPC backend.
973 * fixed some bugs revealed by Paul Dietz' test suite:
974 ** ADJUST-ARRAY now copies the datum in a zero rank array if
976 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
977 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
978 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
980 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
982 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
984 ** ECHO-STREAMs no longer attempt to echo the end of file value to
985 their output stream on EOF from read.
986 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
987 have been read to end-of-file.
988 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
990 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
991 description of determination of which consecutive characters
993 ** Printing the "Space" character with escaping on now yields "#\\ ",
994 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
995 ** Reading floating-point numbers with *READ-BASE* set to a number
996 less than 10 works correctly.
997 ** Reading floating-point numbers with *READ-BASE* set to a number
998 more than 10 works correctly.
999 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1000 the readtable currently in effect.
1002 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1003 * minor incompatible change: parsing of namestrings on a physical
1004 (Unix) host has changed; numbers after the final #\. in a
1005 namestring are no longer interpreted as a version field. This is
1006 intented to be largely invisible to the user, except that the
1007 meaning of the namestring "*.*.*" has changed: it now refers to a
1008 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1009 should usually be replaced by
1010 (make-pathname :name :wild :type :wild :version :wild)
1011 with the added benefit that this is more likely to be portable.
1012 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1013 option to OPEN now signals an error if the file being opened
1014 exists; this may have an impact on existing code.
1015 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1016 signals received, on the PowerPC platforms (both Linux and
1017 Darwin). (thanks to Pierre Mai for pointing out the location of
1019 * several fixes on OS X: The system now builds and runs cleanly on
1020 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1021 (thanks to Brian Mastenbrook)
1022 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1023 second-resolution: integer multiples of 1/3600 between -24 and 24.
1024 (thanks to Vincent Arkesteijn)
1025 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1026 type when called with 1 argument; PEEK-CHAR checked type of
1027 PEEK-TYPE only after having read first character from a
1028 stream. (reported by Peter Graves)
1029 * bug fix: the garbage collector now has much better locality
1030 behaviour, and in particular no longer treats all memory as being
1031 exhausted when many small objects point to each other in a deeply
1033 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1034 recognized as being TYPEP their class.
1035 * bug fix: the PUSHNEW documentation string has been corrected.
1036 (thanks to Vincent Arkesteijn)
1037 * bug fix: defaulting of the value for the last of an atypically
1038 large number of multiple values being bound was not being
1039 performed correctly on the Alpha or PPC platforms
1040 * optimization: implemented multiplication as a modular
1041 (UNSIGNED-BYTE 32) operation on the x86 backend.
1042 * optimization: SEARCH on simple-base-strings can now be open-coded.
1043 (see also contrib/compiler-extras.lisp for inspiration for
1044 teaching the compiler about the Boyer-Moore algorithm).
1045 * value, returned by MAX (and MIN) called with several EQUALP, but
1046 not EQL, arguments now does not depend on compiler settings.
1047 * fixed some bugs revealed by Paul Dietz' test suite:
1048 ** in stack analysis liveness information is propagated from
1049 non-local entry points.
1050 ** pathwise CAST removing failed when the CAST node did not start
1052 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1053 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1055 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1056 host is already defined.
1057 ** RENAME-FILE works on streams instead of signalling an internal
1059 ** PEEK-CHAR uses the current readtable when determining whether
1060 or not a character is whitespace.
1061 ** MERGE-PATHNAMES handles the case when the pathname does not
1062 specify a name while the default-pathname specifies a version.
1063 ** Pathnames now stand a better chance of respecting print/read
1065 ** Attempting to use standardized file system operators with a
1066 pathname with invalid :DIRECTORY components signals a
1068 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1070 ** DIRECTORY on logical pathnames is more correct.
1071 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1072 signal a TYPE-ERROR if their argument is not a stream.
1073 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1074 designator argument does not designate a stream.
1075 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1076 examining the synonym.
1077 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1079 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1080 element-type larger than ([UN]SIGNED-BYTE 32).
1082 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1083 * When built with the :SB-FUTEX feature, threaded builds now take
1084 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1085 for faster/more reliable mutex and condition variable support.
1086 * Incompatible change (but one you probably shouldn't have been using
1087 anyway): the interface and code for arbitrating between multiple
1088 threads in the same user session has been redesigned.
1089 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1090 error when called without an explicit environment argument.
1091 (thanks to Nikodemus Siivola)
1092 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1093 confused about their position. (thanks to Adam Warner and Gerd
1095 * bug fix: Pretty printing backquoted forms with unquotations in the
1096 argument list position of various code constructs such as LAMBDA
1097 now works correctly. (reported by Paul Dietz)
1098 * bug fix: Pretty printing unquotations no longer loses all
1099 stream position information.
1100 * optimization: performance of string output streams is now less
1101 poor for multiple small sequence writes.
1102 * optimization: performance of CSUBTYPEP in the presence of complex
1103 expressions involving CONS and NOT many times has been improved.
1104 (reported by Paul Dietz)
1105 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1107 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1108 streams for the REPL, for the debugger, and so on. (thanks to
1110 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1111 * fixed some bugs revealed by Paul Dietz' test suite:
1112 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1113 is ignored if it is too small, rather than propagating through
1114 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1115 ** extremely complex negations of CONS types were not being
1116 sufficiently canonicalized, leading to inconsistencies in
1118 ** VALUES tranformer lost derived type.
1120 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1121 * fixed a bootstrapping bug: the build process no longer assumes
1122 that the various BOOLE-related constants have the same value in
1123 host and target lisps. (noted by Paul Dietz' test suite on an
1124 SBCL binary built from CLISP)
1125 * The system can now be dynamically linked on the MIPS platform,
1126 which enables dynamic loading of foreign code from Lisp. (thanks
1127 to Ralf Baechle for discussions on the MIPS ABI)
1128 * The system now records debugging information for its own source
1129 files in a filesystem-position-independent manner, relative to
1130 the "SYS" logical host.
1131 * fixed a compiler bug: MV-LET convertion did not check references
1132 to the "max args" entry point. (reported by Brian Downing)
1133 * tweaked disassembly notes to be less confident about proclaiming
1134 some instruction as an LRA. (thanks to Brian Downing)
1135 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1136 now each have their own history, command character, and other
1137 characteristics. (thanks to David Lichteblau)
1138 * fixed some bugs revealed by Paul Dietz' test suite:
1139 ** compiler failure in compiling LOGAND expressions including a
1141 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1142 shift greater than 32.
1143 ** FLUSH-DEST did not mark blocks for type check regeneration.
1144 ** HANDLER-CASE failed to accept declarations in handler clauses
1145 in some circumstances.
1147 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1148 * New code in contrib/sb-introspect (still probably not entirely
1149 stable yet) provides some support for smart Lisp development
1150 environments like SLIME.
1151 * The conditions signalled for errors occurring when loading .fasl
1152 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1153 in a way which should help ASDF recover gracefully.
1154 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1155 stuff has been cleaned up. If you code contrib/ stuff, this might
1156 affect you, and you can look at contrib/README, contrib/STANDARDS,
1157 and/or the 0.8.4.27 diff to check.
1158 * In full calls the compiler now does not generate checks for declared
1159 argument types for all arguments.
1160 * various threading fixes
1161 ** and some experimental patches which didn't make it into
1162 the main tree for this release, but which are shipped in
1163 contrib/experimental-thread.patch as a possible fix for some
1164 failures (deadlock, spinning...) in GC-intensive multithreaded
1166 * fixed PPC build problem (source code incompatibility of different
1167 library versions): added offsetof() hackery which attempts to divine
1168 where glibc maintainers put uc_mcontext today
1169 * fixed bug 282: compiler does not trust type assertions while passing
1170 arguments to a full call.
1171 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1172 &OPTIONAL VALUES type parameter.
1173 * fix bug 214: algorithm for noting rejected templates is now more
1174 similar to that of template seletion. (also reported by rydis on
1176 * fixed bug 141b: printing backquoted information readably and prettily
1177 inserts a space where necessary.
1178 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1179 (CHARACTER 10) are now reported as errors, rather than propagated
1180 as unknown types. (reported by piso on #lisp)
1181 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1182 with values NIL and :ERROR. (thanks to Milan Zamazal)
1183 * fixed bug 191c: CLOS now does proper keyword argument checking as
1184 described in CLHS 7.6.5 and 7.6.5.1.
1185 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1186 longer raise an error; further, using a list as a for-as-arithmetic
1187 counter now raises a meaningful error.
1188 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1189 now understood by sequence creation functions such as MAKE-SEQUENCE
1191 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1192 a STRING-INPUT-STREAM.
1193 * compiler enhancement: SIGNUM is now better able to derive the type
1195 * type declarations inside WITH-SLOTS are checked. (reported by
1197 * fixed some bugs revealed by Paul Dietz' test suite:
1198 ** incorrect optimization of TRUNCATE for a positive first
1199 argument and negative second.
1200 ** compiler failure in let-convertion during flushing dead code.
1201 ** compiler failure while deriving type of TRUNCATE on an
1202 interval, containing 0.
1203 ** ASH of a negative bignum by a negative bignum count now returns
1205 ** intersection of CONS types now canonicalizes properly, fixing
1206 inconsistencies in SUBTYPEP.
1208 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1209 * incompatible change: The --disable-debugger command line
1210 option now clobbers the debugger at a more fundamental
1211 level, by redefining #'INVOKE-DEBUGGER instead of by
1212 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1213 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1214 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1215 enter the debugger REPL and then suffer recursive errors
1216 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1217 while under the new system, BREAK in --disable-debugger mode
1218 terminates the system just as an unhandled error would.
1219 * fixed compiler performance when processing loops with a step >1;
1220 * bug fix: DOCUMENTATION now retrieves generic function
1221 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1222 support has been systematized, and now supports the methods
1223 specified by ANSI, along with a default method and a method for
1224 slot documentation. (reported by Nathan Froyd)
1225 * bug fix: effective methods associated with a generic function are
1226 no longer cached over a change of that generic function's method
1227 combination. (reported by Andreas Fuchs)
1228 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1229 names a non-existent directory. (thanks to Andreas Fuchs)
1230 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1231 the PPC platform, lead to stack corruption; this has been fixed.
1232 (reported by Rainer Joswig)
1233 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1234 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1235 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1236 arithmetic in general, is now much more reliable on the PPC
1238 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1239 platform now returns the right answer.
1240 * optimization: restored some effective method precomputation in
1241 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1242 precomputation is now tunable.
1243 * optimization: compiler-internal data structure use has been
1244 reviewed, and changes have been made that should improve the
1245 performance of the compiler by about 20%.
1246 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1247 simple-base-strings and simple-bit-vectors is improved.
1248 * optimization: the optimization of 32-bit logical and arithmetic
1249 functions introduced in version 0.8.3 on the x86 has been
1250 implemented on the mips, ppc and sparc platforms; an
1251 implementation of the same facility, but for 64-bit arithmetic,
1252 has been added for the alpha.
1253 * microoptimization: the compiler is better able to make use of the
1254 x86 LEA instruction for multiplication by constants.
1255 * bug fix: in some situations compiler did not report usage of
1256 generic arithmetic in (SPEED 3) policy.
1257 * bug 145b fix: compiler used wrong type specifier while converting
1258 MEMBER-types to numeric.
1259 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1261 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1262 index argument now works properly on the Alpha platform.
1263 * bug fix: floating point exception treatment on the Alpha platform
1265 * bug fix: FILE-POSITION works much better on string input and
1266 output streams. (thanks to Nikodemus Siivola)
1267 * bug fix: many threading/garbage collection symptoms sorted.
1268 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1269 might be pseudo-atomic.
1270 * internal change: Stopping for GC is now done with signals not
1271 ptrace. GC is now done in whichever thread wanted it, instead of
1273 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1275 * bug fix: result form in DO is not contained in the implicit
1277 * incompatible change: ICR structure is changed; the value part of
1278 CONTINUATION is now called LVAR; corresponding functions are
1279 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1280 * added type deriver for ISQRT (thanks to Robert E. Brown).
1281 * bug fix: better support for loading from the command line when an
1282 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1284 * fixed some bugs revealed by Paul Dietz' test suite:
1285 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1286 ** ROUND and FROUND now give the right answer when given very
1287 small float arguments.
1288 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1290 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1291 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1292 ** LCM should return a non-negative integer.
1293 ** PARSE-INTEGER returned the index of a terminator instead of the
1294 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1295 ** PARSE-INTEGER returned an incorrect index being applied to a
1297 ** LCM with two arguments of 0 returns 0 rather than signalling
1299 ** unsigned addition of a 32-bit constant with the high bit set no
1300 longer causes an internal compiler error on the x86.
1301 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1302 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1303 with negative last argument.
1304 ** byte specifiers with zero size and position no longer cause
1305 an error during type derivation.
1306 ** bignum multiplication on the Alpha platform now returns the
1308 * porting: The system now builds on SuSE AMD64, although it still
1309 generates a 32-bit binary.
1310 * .fasl file incompatibility: The fasl file version number has
1311 been incremented (because of the changes to internal compiler
1312 data structures referred to above).
1314 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1315 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1316 more accurately, on the Darwin kernel running on PowerPC hardware.
1317 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1318 * Compiler code deletion notes now signal a condition of type
1319 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1320 an associated MUFFLE-WARNING restart.
1321 * The compiler now performs limited argument count validation of
1322 constant format strings in FORMAT, and where appropriate in ERROR,
1323 CERROR and WARN. (thanks to Gerd Moellmann)
1324 * New ASDF-INSTALL contrib can be used for automatic download and
1325 installation of third-party Lisp code from CCLAN or other sites
1327 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1328 which forces another thread to execute a function supplied by the
1330 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1331 now accept and act upon their :ELEMENT-TYPE keyword argument.
1332 (reported by Martin Atzmueller, Edi Weitz)
1333 * bug fix: FILE-POSITION now accepts position designators up to
1334 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1335 is the greater. (thanks to Patrik Nordebo)
1336 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1337 Kalle Olavi Niemitalo)
1338 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1339 printable. (reported by Eric Marsden)
1340 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1341 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1342 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1343 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1344 (thanks to Stig Sandoe)
1345 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1346 UNREAD-CHAR now correctly includes the unread character in the
1347 target sequence. (thanks to Gerd Moellmann)
1348 * bug fix in threaded builds: the system can now be suspended and
1349 resumed by shell job control with minimal disruption.
1350 * bug fixes in times and timezones >2038AD
1351 * better handling of "where is GNU make?" problem in build scripts
1352 (thanks to Nikodemus Siivola)
1353 * new optimization: inside a named function any reference to a
1354 function with the same name is considered to be a self-reference;
1355 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1356 optimization quality.
1357 * new optimization on x86: logical functions and + now have
1358 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1359 used when the result is truncated to 32 bits.
1360 * VALUES declaration is partially enabled.
1361 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1362 * fixed some bugs revealed by Paul Dietz' test suite:
1363 ** The system now obeys the constraint imposed by
1364 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1365 types form a lattice under type intersection.
1366 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1367 ** ASSOC now ignores NIL elements in an alist.
1368 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1369 and (1+ MOST-POSITIVE-FIXNUM) answers.
1370 ** The addition of a method with invalid qualifiers to a generic
1371 function does not cause an error to be signalled immediately;
1372 a warning is signalled, and the error is generated only on
1373 calling the generic function.
1374 * changed .fasl file version number, in part to add type codes for
1375 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1376 obscure ANSI requirements
1378 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1379 * fixed bug 148: failure to inline-expand a local function left
1380 garbage, confusing the compiler.
1381 * fixed bugs 3cd: structure slot readers perform type check if the
1382 slot can have an invalid value (i.e. it is either not initialized
1383 or can be written with a less specific slot writer).
1384 * bug fix: the compiler now traps array references to elements off
1385 the end of an array; previously, the bounds checking in some
1386 circumstances could go off-by-one.
1387 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1389 * type declarations for array element types now obey the description
1390 on the CLHS page "Declaration TYPE", as per discussions on
1391 sbcl-help around 2003-05-08. This means that a declaration
1392 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1393 declaration, all references to BAR will be asserted or assumed
1394 (with THE, so dependent on compiler policy) to involve objects of
1395 type FOO. Note that no such declaration is implied in
1396 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1397 * declared types of functions from the "Conditions"
1398 chapter. (reported by Paul Dietz)
1399 * bug fix: CERROR accepts a function as its first argument.
1400 * bug fix: NTH an NTHCDR accept a bignum as index
1401 arguments. (reported by Adam Warner)
1402 * optimization: character compare routines now optimize comparing
1403 against a constant character. (reported by Gilbert Baumann)
1404 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1405 argument now works properly on the MIPS platform.
1406 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1407 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1408 declared to have a functional type, does not cause an error
1410 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1411 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1412 * fixed bug: if last continuation of a deleted block has a
1413 destination, this destination should be deleted too. (reported by
1415 * fixed a bug in the bootstrap process: the host compiler's values
1416 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1417 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1418 test case from Patrik Nordebo)
1419 * improved the ability of the disassembler on the PPC platform to
1420 provide helpful disassembly notes.
1421 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1422 the class in more cases than previously.
1423 * bug fix: FILE-POSITION now understands :START and :END for
1424 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1425 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1426 8) data. (thanks to David Lichteblau)
1427 * bug fix: it is possible to add a method to a generic function
1428 without lambda list.
1429 * bug fix: reader failed to signal END-OF-FILE inside an
1430 object representation. (reported by Nikodemus Siivola)
1431 * fixed some bugs revealed by Paul Dietz' test suite:
1432 ** LAST and [N]BUTLAST should accept a bignum.
1433 ** condition slot accessors are methods.
1434 ** (VECTOR NIL) is a subtype of STRING.
1436 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1437 * minor incompatible change: some nonsensical specialized lambda
1438 lists (used in DEFMETHOD) which were previously ignored now signal
1440 * minor incompatible change: the system is now aware of the types of
1441 variables in the COMMON-LISP package, and will signal errors for
1442 most violations of these type constraints (where previously they
1443 were silently accepted).
1444 * minor incompatible change: COMPILE-FILE now uses the freedom
1445 afforded (ANSI 3.2.2.3) to use derived function types for
1446 functions defined in the same file. This also permits the system
1447 to warn on static type mismatches and function
1448 redefinition. (Currently it does not work with high DEBUG level.)
1449 * minor incompatible change: VALUES declaration is disabled.
1450 * When issuing notes, the compiler now signals a condition of type
1451 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1452 restart for use in user handlers. It is expected that the
1453 COMPILER-NOTE condition will eventually become a condition
1454 supertype to a hierarchy of note types, which will then be
1455 handleable in a similar fashion. However, at the moment, no such
1456 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1457 but it's an implementation detail, not a classification for the
1459 * Changes in type checking closed the following bugs:
1460 ** type checking of unused values (192b, 194d, 203);
1461 ** template selection based on unsafe type assertions (192c, 236);
1462 ** type checking in branches (194bc).
1463 * A short form of VALUES type specifier has ANSI meaning (it has
1464 increased the number of situations when SBCL cannot perform type
1466 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1467 keywords or constants is permissible.
1468 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1469 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1470 classes. (thanks to Antonio Martinez)
1471 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1472 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1473 argument to a pretty-print stream. Instead, it leaves any such
1474 operations to DESCRIBE-OBJECT methods.
1475 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1477 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1478 lambda lists. (thanks to David Lichteblau)
1479 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1480 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1481 (thanks to Gerd Moellmann)
1482 * fixed bug 246: increased compilation speed of long
1483 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1485 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1487 * DEFCONSTANT now throws a condition of type
1488 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1489 constant to a non-EQL value; CONTINUE and ABORT restarts
1490 respectively change and preserve the value.
1491 * fixed bug 63: The code walker, part of the implementation of CLOS,
1492 is now better at handling symbol macros.
1493 * bug fix: There is no longer an internal implementation type named
1494 CL:LENGTH. (reported by Raymond Toy)
1495 * bug fix: In macro-like defining macros/special operators the
1496 implicit block does not enclose the lambda list.
1497 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1498 enclosed in parentheses) are not suitable as type specifiers, and
1499 their use properly signals an error now.
1500 * bug fix: An argument count mismatch for a type specifier in code
1501 being compiled no longer causes an unhandled error at compile
1502 time, but signals a compile-time warning.
1503 * fixed simple vector readable printing
1504 * bug fix: DESCRIBE takes more care over whether the class
1505 precedence list slot of a class is bound before accessing it.
1506 (reported by Markus Krummenacker)
1507 * bug fix: FORMATTER can successfully compile pretty-printer format
1508 strings which use variants of the ~* directive inside.
1509 * bug fix: SEARCH now applies its TEST predicate to the elements of
1510 the arguments in the correct order. (thanks to Wolfhard Buss)
1511 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1512 in type inference. (thanks to Robert E. Brown)
1513 * bug fix: Reading in symbols with an explicit package name of ""
1514 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1515 * fixed some bugs revealed by Paul Dietz' test suite:
1516 ** NIL is now allowed as a structure slot name.
1517 ** Arbitrary numbers, not just REALs, are allowed in certain
1518 circumstances in LOOP for-as-arithmetic clauses.
1519 ** Multiple class redefinitions before slot access no longer
1520 causes a type error.
1521 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1522 association between the name and a class.
1523 ** Generic functions with non-standard method-combination and over
1524 five methods all of which return constants no longer return NIL
1525 after the first few invocations. (thanks to Gerd Moellmann)
1526 ** CALL-NEXT-METHOD with no arguments now passes the original
1527 values of the arguments, even in the presence of assignment.
1528 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1530 ** DISASSEMBLE works with closures and funcallable instances.
1531 ** ADD-METHOD now returns the generic function, not the new method.
1532 ** FIND-METHOD signals an error if the lengths of the specializers
1533 is incompatible with the generic function, even if the ERRORP
1535 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1536 which its argument is a member.
1537 ** DEFCLASS only redefines the class named by its class-name
1538 argument if that name is the proper name of the class;
1539 otherwise, it creates a new class.
1540 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1541 of the UNBOUND-SLOT condition to the name of the slot.
1542 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1543 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1544 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1545 SLOT-MAKUNBOUND in the specified fashion.
1547 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1548 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1549 cross-compilation host. As a consequence, we can now bootstrap our
1550 way up to SBCL starting with a bare gcc toolchain and human-readable
1551 source code (first the source to CLISP, then the source to SBCL).
1552 * A contributed module containing a partial implementation of the
1553 simple-streams interface has been included. (thanks to Rudi
1555 * A contributed module implementing the RFC1321 Message Digest
1556 Algorithm, known as MD5, has been included.
1557 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1558 no longer has any effect, as the code controlled by this feature
1559 has been deleted. (As far as we know, no-one has ever built using
1560 this feature, and its semantics were confused in any case).
1561 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1562 work on conditions (as required by the ANSI specification),
1563 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1564 expected behaviour on conditions. Users should note, however,
1565 that such behaviour is not required by the ANSI specification,
1566 and so use of this behaviour may render their code unportable.
1567 * fixed some bugs revealed by Paul Dietz' test suite:
1568 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1570 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1571 ** SXHASH on condition objects no longer returns NIL.
1572 ** :ALLOCATION :CLASS slots are better treated; their values are
1573 updated on class redefinition, and initforms inherited from
1574 superclasses are applied.
1575 ** REMOVE-METHOD returns its generic function argument even when
1576 no method was removed.
1577 ** SHARED-INITIALIZE now initializes the values of the requested
1578 slots, including those with :ALLOCATION :CLASS.
1579 ** ALLOCATE-INSTANCE now works on structure classes defined via
1580 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1582 ** SLOT-EXISTS-P now works on conditions, as well as structures
1584 ** MAKE-LOAD-FORM now has the required methods on
1585 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1586 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1587 keyword, and now implements the SLOT-NAMES argument.
1588 ** methods with &OPTIONAL arguments no longer allow too many
1589 arguments to be passed in the call without error.
1590 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1591 option is consistent with the required arguments of the generic
1592 function lambda list.
1593 * bug fix: REQUIRE accepts a string designator. (Thanks to
1595 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1596 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1597 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1598 * bug fix: The compiler now checks for duplicated variables in macro
1600 * bug fix: SETQ on globals returns the correct value.
1601 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1602 not a COMPILER-ERROR (followed by some other strange error on
1603 choosing the CONTINUE restart).
1604 * bug fix: make.sh and friends are now more consistent in the way that
1605 they look for GNU "make".
1607 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1608 * experimental native threads support (on x86 Linux >=2.4 only).
1609 This is not compiled in by default: you need to add :SB-THREAD to
1610 the target features. See the "Beyond ANSI" chapter of the manual
1612 * fix for longstanding nonANSIism: The old distinction between
1613 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1614 The return value from CL:FIND-CLASS is now a CLOS class, and
1615 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1616 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1617 * An interface to the MetaObject Protocol, as described in Kiczales,
1618 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1619 MIT Press, 1991, is available from the SB-MOP package.
1620 * incompatible change: the SB-PCL package should now be considered
1621 a private implementation detail, and no longer a semi-private MOP
1623 * minor incompatible change: due to rearrangement for threads, the
1624 control stack and binding stack are now allocated at arbitrary
1625 addresses instead of being hardcoded per-port. Users affected by
1626 this probably have to be doing advanced things with shared
1627 libraries, and will know who they are.
1628 * minor incompatible change: Previously, all --eval forms used were
1629 processed with READ before any of them were processed with EVAL.
1630 Now each --eval form is processed with both READ and EVAL before
1631 the next --eval form is processed. (Thus package operations like
1632 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1633 work as the user might reasonably expect.)
1634 * minor incompatible change: *STANDARD-INPUT* is now only an
1635 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1637 * minor incompatible change: Y-OR-N-P is now character-oriented,
1638 not line oriented. Also, YES-OR-NO-P now works without errors.
1639 (thanks to Antonio Martinez)
1640 * sb-aclrepl module improvements: an integrated inspector, added
1641 repl features, and a bug fix to :trace command.
1642 * Known functions, which cannot be open coded by the backend, are
1643 considered to be able to check types of their arguments. (fixing
1644 a bug report by Nathan J. Froyd)
1645 * fixed a bug in computing method discriminating functions: It is
1646 now possible to define methods specialized on classes which have
1647 forward-referenced superclasses. (thanks to Gerd Moellmann)
1648 * fixed evaluation order in optional entries (reported by Gilbert
1650 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1651 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1652 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1653 required-by-AMOP NAME argument, as well as CLASS and
1654 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1655 * fixed bug 20: DEFMETHOD can define methods using names that are
1656 not the proper names of classes to designate class specializers.
1657 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1658 Unix file descriptors, instead of blowing up. (thanks to Antonio
1660 * Garbage collection refactoring: user-visible change is that a
1661 call to the GC function during WITHOUT-GCING will not do garbage
1662 collection until the end of the WITHOUT-GCING. If you were doing
1663 this you were probably losing anyway.
1664 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1665 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1666 TYPEP the latter but not the former.
1667 * The compiler issues a full WARNING for calls to undefined functions
1668 with names from the CL package.
1669 * MAP-INTO for a vector destination is open coded. (reported by
1670 Brian Downing on c.l.l)
1671 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1672 documentation string.
1673 * fixed some bugs revealed by Paul Dietz' test suite:
1674 ** COPY-ALIST now signals an error if its argument is a dotted
1676 ** Condition slots are now accessed more correctly in the presence
1677 of multiple initargs for a given slot.
1678 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1679 exclude restarts of the same name associated with a different
1681 ** DEFCLASS of forward-referenced classes with another
1682 forward-referenced class in the superclasses list no longer
1684 ** Condition slots are now initialized once each, not multiple
1685 times. (thanks to Gerd Moellmann)
1686 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1688 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1689 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1690 arguments contain duplicated elements.
1691 ** RESTART-CASE understands local macros.
1692 ** RESTART-CASE associates exactly its own restarts with a condition.
1693 ** ENDP in safe mode checks its argument to be of type LIST.
1694 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1695 in question is unbound.
1696 ** Optimized MAKE-INSTANCE functions no longer cause internal
1697 assertion failures in the presence of duplicate initargs.
1698 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1699 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1700 propagated even in the ctor optimized implementation of
1702 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1704 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1705 * a better implementation of SXHASH on (simple) bit vectors,
1706 measured both in execution speed and in distribution of results
1707 over the positive fixnums, has been installed. Likewise, a better
1708 implementation of EQUAL for simple bit vectors is now available.
1709 * fixed CEILING optimization for a divisor of form 2^k.
1710 * fixed bug 240 (emitting extra style warnings "using the lexical
1711 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1712 by Antonio Martinez)
1713 * fixed SXHASH, giving different results for NIL depending on type
1714 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1715 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1716 variable. (found by Rolf Wester)
1717 * SBCL does not ignore type declarations for special
1718 variables. (reported by rif on c.l.l 2003-03-05)
1719 * some bug fixes in contrib/sb-aclrepl/
1720 * fixed some bugs revealed by Paul Dietz' test suite:
1721 ** a bug in the CONS type specifier, whereby the CAR and CDR
1722 types got intertwined, has been fixed;
1723 ** the type system is now able to reason about the interaction
1724 between INTEGER and RATIO types more completely;
1725 ** APPEND, [N]REVERSE and NRECONC check that those their
1726 arguments, which must be proper lists, are really so;
1727 ** An array specialized to be unable to hold elements has been
1728 implemented, as required -- yes, really -- by ANSI;
1729 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1730 on malformed property lists;
1732 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1733 * incompatible packaging change: in line with Unix convention,
1734 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1735 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1736 * REQUIRE and PROVIDE are now optionally capable of doing something
1737 useful. See the documentation string for REQUIRE.
1738 * infrastructure for a managed SBCL contrib system: contributed
1739 modules in this release include:
1740 ** the ASDF system definition facility;
1741 ** an interface to the BSD Sockets API;
1742 ** an ACL-like convenience interface to the repl;
1743 (thanks to Kevin Rosenberg)
1744 ** an implementation of ROTATE-BYTE, with efficient implementation
1746 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1747 gives a closer approximation to the right answer than previously.
1748 (thanks to Raymond Toy)
1749 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1750 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1751 optional environment arguments, as required by ANSI.
1752 * fixed bugs in other functions taking environment objects, allowing
1753 calls with an explicit NIL environment argument to be compiled
1755 * fixed bug 228: primary return values from
1756 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1757 COMPILE or FUNCTION.
1758 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1759 :TYPE will no longer signal errors on innocuous objects.
1760 * fixed bug 231b: SETQ is better at respecting type declarations in
1761 the lexical environment.
1762 * fixed a bug in DEFCLASS: classes named by symbols with no or
1763 unprintable packages can now be defined.
1764 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1765 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1766 * fixed compiler failure related to checking types of functions.
1767 (reported by Robert E. Brown)
1768 * the compiler is now much more consistent in its error-checking
1769 treatment of bounding index arguments to sequence functions: in
1770 (SAFETY 3) code, errors will be signalled in almost all cases if
1771 invalid sequence bounding indices are passed to functions defined
1772 by ANSI to operate on sequences.
1773 * fixed a bug in the build procedure: documentation of SBCL-specific
1774 packages is now preserved and available in the final Lisp image.
1775 * lifted FDEFINITION lookup out of loops in the implementation of
1776 many list operations. (thanks to Robert E. Brown)
1777 * fixed a bug in the reader: the #n# reader macro now works for
1778 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1779 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1780 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1781 E. Brown and Tony Martinez respectively)
1782 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1783 SLOT-BOUNDP: in particular, it is now able to optimize them much
1784 better, and is now not vulnerable to having packages renamed.
1785 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1786 always called when a slot is not present in an instance. (thanks
1788 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1789 longer signal an error on unreading a character following EOF on
1790 the previous constituent stream. (thanks to Tony Martinez)
1791 * fixed some bugs revealed by Paul Dietz' test suite:
1792 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1793 not just nonnegative fixnums;
1794 ** the logical bit-array operators such as BIT-AND now accept an
1795 explicit NIL for their "opt-arg" argument (to indicate a
1796 freshly-consed result bit-array);
1797 ** ELT now signals an error on an invalid sequence index in safe
1799 ** the type system is now cleverer about negations of numeric
1800 types, and consequently understands the BIGNUM and RATIO types
1802 ** the type system is now cleverer about the interaction between
1803 INTEGER and RATIO types: while bugs still remain, many more
1804 cases are accurately computed;
1805 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1806 if it is in the last clause;
1807 ** CONSTANTLY now correctly returns a side-effect-free function in
1809 ** DECLARE is no longer treated as a special-operator; in
1810 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1811 * incremented fasl file version number due to the change in the
1812 DEFSTRUCT-SLOT-DESCRIPTION structure.
1814 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1815 * minor incompatible change: code processed by the "interpreter" or
1816 EVAL now has a compilation optimization policy of (DEBUG 2)
1817 (changed from (DEBUG 1)) to improve debuggability of interactive
1818 development, and to allow the use of the debug RETURN command in
1820 * an experimental implementation of the RETURN command for the
1821 debugger has been included. (thanks to Frederik Kuivinen)
1822 * fixed bug 62: constraints were not propagated into a loop.
1823 * fixed bug in embedded calls of SORT (reported and investigated by
1825 * fixed some bugs revealed by Paul Dietz' test suite:
1826 ** printing and reading of arrays with some dimensions having
1827 length 0 (thanks to Gerd Moellmann);
1828 ** BOA constructor with &AUX argument without a default value does
1829 not cause a type error;
1830 ** CONSTANTP now returns true for all self-evaluating objects.
1832 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1833 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1834 accessors that are related by inheritance, as specified in the
1835 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1836 Valtteri Vuorikoski)
1837 * The compiler is now able to inline functions that were defined in
1838 a complex lexical environment (e.g. inside a MACROLET).
1839 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1841 * Support for the upcoming FreeBSD-5.0 release has been included.
1842 (thanks to Dag-Erling Smorgrav)
1843 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1844 effect when it is not in a toplevel context.
1845 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1846 stand a better chance of being correct. (thanks to Gerd
1848 * fixed bug in COERCE, which now signals an error on coercing a
1849 rational to a bounded real type which excludes the expected
1851 * The compiler is now able to derive types more accurately from the
1852 COERCE and COMPILE functions.
1853 * fixed bug 223: functional binding is considered to be constant
1854 only for symbols in the CL package.
1855 * fixed bug 231: SETQ did not check the type of a variable being set
1856 (reported by Robert E. Brown)
1857 * A new optimization for MAKE-INSTANCE has been included, fixing
1858 various bugs (including relating to :ALLOCATION :CLASS slots and
1859 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1861 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1862 ** As required by ANSI, LOOP now disallows anonymous collection
1863 clauses such as COLLECT I in conjunction with aggregate boolean
1864 clauses such as THEREIS (= I 1);
1865 ** LOOP now signals an error when any variable is reused in the
1866 same loop (including the potentially useful construct analogous
1867 to WITH A = 1 WITH A = (1+ A);
1868 ** IT is only a special loop symbol within the first clause of a
1869 conditional loop clause;
1870 ** LOOP with a typed iteration variable over a hashtable now
1871 signals a type error iff it should.
1872 * fixed some other bugs revealed by Paul Dietz' test suite:
1873 ** FILE-STREAM now names the class previously known as FD-STREAM;
1874 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1875 argument) no longer signals an error;
1876 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1877 of the slot symbol, rather than using the current package
1878 ((:CONC-NAME "") continues to intern the slot's name in the
1880 * incremented fasl file version number, because of the incompatible
1881 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1882 of the new implementation of DEFINE-COMPILER-MACRO.
1884 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1885 * Support for building SBCL for MIPS platforms running in
1886 little-endian mode has now been checked in, and basic
1887 functionality on said platforms verified.
1888 * minor incompatible change: PCL now records the pathname of a file
1889 in which methods and the like are defined, rather than its
1891 * minor incompatible change: TRUENAME now considers the truename of
1892 a file naming a directory to be the pathname with :DIRECTORY
1893 component indicating that directory.
1894 * minor incompatible change: a NAMED clause in the extended form of
1895 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1896 reason for the previous behaviour is unclear.
1897 * more systematization and improvement of CLOS and MOP conformance
1898 in PCL (thanks to Gerd Moellman and Pierre Mai):
1899 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1901 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1902 primary methods with no specializers;
1903 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1905 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1906 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1907 FORWARD-REFERENCED-CLASSes; error reporting on
1908 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1910 ** SXHASH on CLOS instances now uses a slot internal to the
1911 instance to return different numbers on distinct instances,
1912 while preserving the same return value through invocations of
1914 ** DEFMETHOD signals errors when methods with longer incongruent
1915 lambda lists are added to generic functions;
1916 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1917 CLASS, as specified in AMOP;
1918 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1919 on the order returned by the primary method for classes of
1920 class STANDARD-CLASS;
1921 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1922 * fixed some bugs shown by Paul Dietz' test suite:
1923 ** DOLIST puts its body in TAGBODY;
1924 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1926 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1927 value producing form;
1928 ** if more variables are given to PROGV than values, extra
1929 variables are bound and made to have no value;
1930 ** NSUBSTITUTE on list arguments gets the right answer with
1932 ** ELT signals an error of type TYPE-ERROR when the index argument
1933 is not a valid sequence index;
1934 ** LOOP signals (at macroexpansion time) an error of type
1935 PROGRAM-ERROR when duplicate variable names are found;
1936 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1937 ** FUNCALL of special-operators now cause an error of type
1939 ** PSETQ now works as required in the presence of side-effecting
1940 symbol-macro places;
1941 ** NCONC accepts any object as its last argument;
1942 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1944 ** loop-for-as-package does not require a package to be explicitely
1946 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1948 * fixed bug 166: compiler preserves "there is a way to go"
1949 invariant when deleting code.
1950 * fixed bug 172: macro lambda lists with required arguments after
1951 &REST arguments now cause an error to be signalled. (thanks to
1953 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1954 bug. (thanks to Matthew Danish)
1955 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1957 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1958 arguments are lexically rebound. (thanks to Gerd Moellmann and
1960 * fixed bug 194: error messages are now more informative when there
1961 is no primary method applicable in a call to a generic
1962 function. (thanks to Gerd Moellmann)
1963 * fixed bug in command line argument checking (thanks to Julian
1965 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1966 (thanks to Matthew Danish)
1967 * incremented fasl file version number, because of the
1968 SXHASH-related changes in the layout of CLOS data structures
1970 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1971 * minor incompatible change: The runtime (the Unix executable named
1972 "sbcl") is now much pickier about the .core files it will load.
1973 Essentially it now requires .core files to descend from the same
1974 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1975 as the runtime does. (The intent is to prevent the crashes which
1976 can occur, and which can even be reported as mysterious failures,
1977 when people patch the sources or change the build parameters
1978 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1979 sbcl and .core files.)
1980 * fixed bug: VALUES-LIST is no longer optimized away.
1981 * fixed bug 142: The FFI conversion of C string values to Lisp
1982 string values no longer conses excessively. (thanks to Nathan
1983 Froyd porting Raymond Toy's fix to CMU CL)
1984 * began to systematize and improve MOP conformance in PCL (thanks to
1985 Nathan Froyd, Gerd Moellman and Pierre Mai):
1986 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1988 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1989 ** FINALIZE-INHERITANCE is now called on class finalization;
1990 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1991 argument precedence order.
1992 * fixed bug 202: The compiler no longer fails on functions whose
1993 derived types contradict their declared type.
1994 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1995 so it can be non-toplevel.
1996 * The fasl file version number has changed (because of the new
1997 implementation of DEFMACRO).
1998 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1999 safe code, that any length requirement by their type-specifier
2000 argument is valid. The exceptions to this are described in bug
2002 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2003 functions now check the types of their inputs as required by ANSI.
2004 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2005 introduced symbol is DECLAREd to be SPECIAL.
2006 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2007 * fixed bug: :COUNT argument to sequence functions may be negative
2008 * fixed bug: body of DO-SYMBOLS may contain declarations
2009 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2010 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2011 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2012 symbol macro only once
2013 * fixed printing of call frame when argument list is unavailable
2014 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2015 * compiler no longer signals WARNING on unknown keyword
2018 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2019 * A beta-quality port to the mips architecture running Linux,
2020 based on the old CMUCL backend, has been made. It has been tested
2021 on a big-endian kernel, and works sufficiently well to be able to
2022 rebuild itself; it has not been tested in little-endian mode.
2023 * fixed an inconsistency between gencgc.c and purify.c which made
2024 dumping/loading .core files unreliable
2025 * fixed bug 120a: The compiler now deals correctly with IFs where
2026 the consequent is the same as the alternative, instead of
2027 misderiving the return type. (thanks to Alexey Dejneka)
2028 * fixed bug 113: Logical pathnames are now dumpable (the logical
2029 host is resolved at load-time, throwing an error if it is not
2031 * fixed bug 174: FORMAT's error message is slightly clearer when a
2032 non-printing character is used in a format directive.
2033 * fixed several bugs in compiler checking of type declarations, i.e.
2034 violations of the Python "declarations are assertions" principle
2035 (thanks to Alexey Dejneka)
2036 * fixed several bugs in PCL's error checking (thanks to Gerd
2038 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2040 * fixed bug in compilation of functions as first class values
2041 (thanks to Antonio Martinez-Shotton)
2042 * The compiler's handling TYPE-ERRORs which it can prove will
2043 inevitably happen at runtime has been cleaned up and corrected
2044 in several ways. (thanks to Alexey Dejneka)
2045 * improved argument type checking for various basic arithmetic
2046 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2047 lavished on them in the past that they can be compiled in many
2048 ways in different special cases
2049 * fixed bug 181: compiler checks validity of user supplied type
2051 * cleaned up code flushing in optimization: Function calls which
2052 should signal errors for safety purposes (e.g. which ANSI says
2053 should signal errors when their arguments are of incorrect type)
2054 are no longer optimized away.
2055 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2056 * incremented fasl file version number, because changes in the
2057 implementation of sequence functions like COERCE caused
2058 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2059 in old inline expansions) to become undefined. (Actually these
2060 changes were later undone, so we might very well be binary
2061 compatible with 0.7.7 after all, but leaving the version number
2062 incremented seemed like the simplest and most conservative
2065 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2066 * An alpha-quality port to the parisc architecture running Linux,
2067 based on the old CMUCL backend, has been made. This, even more so
2068 than the other backends, should be considered still a work in
2069 progress; known problems include that the Linux kernel in 64-bit
2070 mode does not propagate the correct sigcontext structure to
2071 userspace, and consequently SBCL on a parisc64 kernel will not
2073 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2074 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2075 suppressed.) Also now that the compiler is looking at declarations
2076 in the environment, it checks optimization declarations as well,
2077 and suppresses inlining when (> DEBUG SPEED).
2078 * More fixes have been made to treatment of floating point exception
2079 treatment and other Unix signals. In particular, floating point
2080 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2081 * The detection and handling of control stack exhaustion (infinite
2082 or very deeply nested recursion) has changed. Stack exhaustion
2083 detection is now done by write-protecting pages at the OS level
2084 and applies at all optimization settings; when found, a
2085 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2086 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2087 be caught using IGNORE-ERRORS.
2088 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2089 correctly when transforming recursive LABELS functions to LETs.
2090 (thanks to Alexey Dejneka)
2091 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2092 that are names of constants or global variables.
2093 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2094 alien routines with docstrings.
2095 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2096 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2098 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2099 (thanks to Eric Marsden)
2100 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2101 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2102 * Bug fix: The SPARC backend can now compile functions involving
2103 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2104 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2105 to a functions expecting a PATHNAME-DESIGNATOR.
2106 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2107 lambda lists. (thanks to Alexey Dejneka)
2108 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2109 functions so that EXPORTing the name of the class doesn't cause
2110 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2111 to Antonio Martinez for reporting this)
2112 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2113 constant-folded without failing an assertion. (thanks to Einar
2114 Floystad Dorum for reporting this)
2115 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2116 types are now dealt with more correctly by the compiler.
2117 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2118 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2119 behaviour analogous to RENAME-FILE. This puts its behaviour more
2120 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2122 * The fasl file version number has changed again. (because of the
2123 bug fix involving the names of PCL MAKE-INSTANCE functions)
2125 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2126 * bug fix: Floating point exceptions are treated much more
2127 consistently on the x86/Linux and PPC/Linux platforms.
2128 * Array initialization with :INITIAL-ELEMENT is now much faster for
2129 cases when the compiler cannot open code the array creation, but
2130 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2131 array accesses have also seen a speed increase.
2132 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2133 specified. (This was at the root of some bad interactions between
2134 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2136 * bug fix: Internal error arguments for undefined functions are now
2137 computed correctly on the PPC/Linux platform.
2138 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2139 Raymond Toy's patch for CMU CL)
2140 * Support for the Solaris 9 operating environment has been included
2141 (thanks to Daniel Merritt)
2142 * A very ugly but hopefully complete draft of the missing FFI chapter
2143 of the manual has been created by reformatting the corresponding
2144 CMU CL manual chapter into (currently very ugly and incoherent)
2145 DocBook and bringing it up to date for SBCL behavior. Thus, the
2146 manual is now essentially complete, at least by my extreme
2147 once-and-only-once standards, whereby it's acceptable to refer to
2148 the doc strings of SB-EXT functions as the primary documentation.
2149 * The fasl file version number has changed again, due to cleanup of
2150 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2151 is no longer a static symbol.)
2153 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2154 * SBCL now builds with OpenMCL (version 0.12) as the
2155 cross-compilation host; also, more progress has been made toward
2156 bootstrapping under CLISP.
2157 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2159 * bug 158 fixed: The compiler can now deal with integer loop
2160 increments different from 1; fixing this turned out also to fix
2162 * bug 169 fixed: no more bogus warnings about using lexical bindings
2163 despite the presence of perfectly good SPECIAL declarations (thanks
2164 to David Lichteblau)
2165 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2166 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2167 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2169 * bug 180 fixed: Method combination specifications no longer ignore
2170 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2171 * bug fix: Structure type predicate functions now check their argument
2172 count as they should.
2173 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2174 correctly. (thanks to Pierre Mai)
2175 * minor incompatible change: The --noprogrammer option is deprecated
2176 in favor of the new --disable-debugger option, which is very similar.
2177 (The major difference is that it takes effect at a slightly different
2178 time at startup, causing handling of errors in --sysinit and
2179 --userinit files will be affected differently.) The
2180 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2181 been added to allow this functionality to be controlled from ordinary
2182 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2183 maintainers, who might want to run non-interactive scripts to
2184 build SBCL cores which will later be used interactively.)
2185 * minor incompatible change: The LOAD function no longer, when given
2186 a wild pathname to load, loads all files matching that pathname.
2187 Instead, an error of type FILE-ERROR is signalled.
2189 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2190 * bug 147 fixed: The compiler preserves its block link/count
2191 invariants more correctly now so that it doesn't crash. (thanks
2193 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2195 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2196 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2197 no-value-for-this-character as NIL (as specified by ANSI).
2198 * HOST-NAMESTRING on physical pathnames now returns a string that is
2199 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2200 (thanks to Christophe Rhodes)
2201 * The Alpha port handles icache flushing more correctly. (thanks to
2203 * More progress has been made toward bootstrapping under CLISP. (thanks
2204 to Christophe Rhodes)
2205 * The fasl file format has changed again, because dynamic loading
2206 on OpenBSD (which has non-ELF object files) motivated some cleanups
2207 in the way that foreign symbols are transformed and passed around.
2208 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2209 is no longer treated as whitespace by the reader, but instead as
2210 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2211 |A
\7fB|, instead of A as it used to.
2213 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2214 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2215 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2216 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2217 this as of 0.7.1.45, but was left out of the previous news section
2218 (thanks to Dan Barlow)
2219 * SBCL now runs on the Solaris operating system on SPARC architectures
2220 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2221 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2222 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2223 * SPARC backend cleanups, allowing builds of cores optimized for V8
2224 and V9 SPARCS, and also emission of code targeted to a particular
2225 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2227 * SBCL is closer to bootstrapping under CLISP, thanks to various
2228 fixes by Christophe Rhodes.
2229 * The fasl file format has changed again, to allow the compiler's
2230 INFO database to support symbol macros.
2231 * The user manual (in doc/) is formatted into HTML more nicely.
2232 (thanks to coreythomas)
2233 * The system is smarter about SUBTYPEP relationships, especially
2234 those involving NOT types (including types such as ATOM which are
2235 represented internally using NOT types). Thus SUBTYPEP is less
2236 likely to return (VALUES NIL NIL) in general, and in particular
2237 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2239 * The fasl file format has changed again, because the internal
2240 representation of types now includes a new slot to support the new
2241 SUBTYPEP-of-NOT-types logic.
2242 * (not a change in the main branch of SBCL, but a related prototype
2243 which can hopefully be merged into the main branch of SBCL in the
2244 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2245 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2246 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2247 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2248 dispatch macro character combinations. (thanks to Alexey Dejneka)
2249 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2250 that superficially look like logical namestrings correctly.
2251 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2253 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2254 default supplied-p) for &optional and &key arguments. (thanks to
2257 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2258 * incompatible change: The compiler is now less aggressive about
2259 tail call optimization, doing it only when (> SPACE DEBUG) or
2260 (> SPEED DEBUG). (This is an incompatible change because there are
2261 programs which relied on the old CMU-CL-style behavior to optimize
2262 away their unbounded recursion which will now die of stack overflow.)
2263 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2264 for non-GENCGC systems has been increased to 20M (since that
2265 seems much closer to the likely performance optimum for modern
2266 systems than the old 4M value was)
2267 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2268 and *DEBUG-PRINT-LEVEL*
2269 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2270 of CMU CL's support for SPARC, and various endianness and other
2271 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2272 * new syntactic sugar for the Unix command line: --load foo.bar is now
2273 an alternate notation for --eval '(load "foo.bar")'.
2275 ** The system now detects stack overflow and handles it gracefully,
2276 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2277 optimization settings. (This is a good thing in general, and
2278 its introduction in this version should be particularly timely
2279 for anyone whose code fails because of suppression of tail
2281 ** The system now hunts for the C variable "environ" in a more
2282 devious way, to avoid segfaults when the C library version differs
2283 between compile time and run time. (thanks to Christophe Rhodes)
2284 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2285 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2286 ** The compiler no longer issues bogus style warnings for undefined
2287 classes in the same source file as the DEFCLASSes which defined
2288 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2290 ** fixes in CONDITION class precedence list for undefined function
2291 errors (thanks to Alexei Dejneka)
2292 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2293 correctly. (thanks to Dan Barlow)
2294 ** portability fixes aiming at bootstrapping under CLISP (thanks
2295 to Dave McDonald and Christophe Rhodes)
2296 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2297 ** fixes in type translation and and type inference (thanks to
2299 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2300 ** various fixes in the new ports (thanks to Dan Barlow)
2301 * several changes related to debugging:
2302 ** suppression of tail recursion, as noted above
2303 ** stack overflow detection, as noted above
2304 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2305 is now the default. (For some time encapsulation has been more
2306 reliable than the breakpoint-based :ENCAPSULATE NIL
2307 implementation, at least on X86 systems; and I just noticed that
2308 encapsulation also seems closer to the spirit of the ANSI
2311 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2313 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2314 up properly again. (There was a packaging bug in 0.7.0 which
2315 left their definitions in SB-SYS::LOAD-FOREIGN and
2316 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2317 vital for most things which interface to C-level interfaces,
2318 like extensions working with sockets or databases or
2319 Perl-compatible regexes or whatever, and the need to fix
2320 this bug is the main reason that 0.7.1 was released so
2322 ** DEFGENERIC is now choosier about the methods it redefines, so that
2323 reLOADing a previously-LOADed file containing DEFGENERICs does
2324 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2325 cycle now works as it should. (thanks to Alexey Dejneka)
2326 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2327 fixed by Christophe Rhodes. (He actually submitted this patch
2328 months ago, and I delayed until after 0.7.0.)
2329 ** Bug 111 (internal compiler confusion about runtime checks on
2330 FUNCTION types) was fixed by Alexey Dejneka.
2331 * Some internal cleanups (getting rid of variables which aren't
2332 needed now that the byte interpreter is gone) caused the fasl
2333 file format number to change again.
2335 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2336 * major incompatible change: The default fasl file extension, i.e. the
2337 default extension for files produced by COMPILE-FILE, has changed
2338 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2340 ** There are many changes in the implementation of the compiler.
2341 SBCL is now essentially a compiler-only implementation of ANSI
2342 Common Lisp. EVAL still "interprets" a few special cases, but
2343 almost all the interesting cases are handled by creating
2344 a LAMBDA expression, calling COMPILE on it, then calling
2345 FUNCALL on the result.
2346 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2347 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2348 Since the code is newer, there might still be some new bugs
2349 (though not as many as before Martin Atzmueller's fixes:-). But
2350 the new code is substantially simpler and clearer, and hopefully
2351 any remaining bugs will be simpler, less fundamental, and more
2352 fixable then the bugs in the old code.
2353 ** The revised compiler is still a little unsteady on its feet.
2355 *** The debugging information it produces (particularly the names
2356 of FUNCTION objects) is sometimes much less useful than what
2357 the old compiler produced.
2358 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2359 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2360 within a MACROLET) has been temporarily weakened.
2361 ** There are new compiler optimizations for various functions:
2362 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2363 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2364 *** the math functions TRUNCATE, FLOOR, and CEILING
2365 *** the function-of-all-trades COERCE
2366 Mostly these should be transparent, but there's one
2367 potentially-annoying problem (bug 117): when the compiler
2368 inline-expands a function and does type analysis on the result,
2369 it can create control paths which have type mismatches, and
2370 when it can't prove that those control paths aren't taken,
2371 it will issue WARNINGs about the type mismatches. This is
2372 a particular problem in practice for the new sequence functions.
2373 It's not clear how this should be fixed, and for now, a
2374 workaround is given in the entry for 117 in the BUGS file.
2375 ** (Because of the interaction between the two previous items --
2376 occasional inlining problems and new inline expansions -- some
2377 of the new sequence function optimizations won't really kick in
2378 completely until debugging information, and then inlining, are
2379 straightened out in some future version.)
2380 * minor incompatible changes:
2381 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2382 DIRECTORY no longer implicitly promotes NIL slots of its
2383 pathname argument to :WILD. In particular, when you ask for the
2384 contents of a directory (which you used to be able to do without
2385 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2386 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2387 ** changes in behavior that ANSI explicitly defines to be
2388 implementation dependent:
2389 *** The new compiler-only implementation still conforms with ANSI,
2390 but acts a little different than before. Besides the obvious
2391 changes in performance tradeoffs (that the cost per form passed
2392 to EVAL has gone up, and the cost per form executed by EVAL
2393 has gone down), the behavior of the system changes a little
2394 because there are no longer any interpreted function objects.
2395 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2396 e.g. doing COMPILE on the output of interactive DEFUN is
2398 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2400 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2401 has changed from (:CL) to NIL.
2402 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2403 e.g. #\Newline and #\Tab, don't have names specified in the
2404 ANSI Common Lisp standard, is now based on their ASCII symbolic
2405 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2406 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2407 are no longer used for output.
2408 ** changes in internal implementation constants:
2409 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2410 4 million. (If your application spends a lot of time GCing and
2411 you have a lot of RAM, you might want to experiment with
2412 increasing it even more.)
2413 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2414 However, almost all old code should still continue to work without
2415 immediate update, as SB-C-CALL is now a (deprecated) nickname
2417 ** Old operator names in the style DEF-FOO are now deprecated in
2418 favor of new corresponding names DEFINE-FOO, for consistency with
2419 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2420 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2421 internal symbols, but a few supported extensions like
2422 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2423 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2424 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2425 etc. as you get deeper into recursive calls to the debugger
2426 command loop, instead of the old "5]", "5]]", "5]]]"
2427 sequence. (I was motivated to do this when squabbles between
2428 ILISP and SBCL left me very deeply nested in the debugger. In the
2429 short term, this change will probably provoke more ILISP/SBCL
2430 squabbles, but hopefully it will be an improvement in the long run.)
2431 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2432 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2433 function, since declaiming return types involving aliens is
2434 (1) annoyingly messy to do by hand and (2) vital to efficient
2435 compilation of code which calls such functions.
2436 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2437 longer reexported by the SB-EXT package. They're solely useful
2438 for alien code, so it seems more logical that you should get
2439 them from the SB-ALIEN package, not in SB-EXT.
2440 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2441 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2442 features. Instead, the code that they used to control is always
2443 built into the system.
2444 * many other bug fixes
2445 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2446 advantage of the new EVAL-WHEN stuff and to clean them up in
2447 general, and they are now more ANSI-compliant in a number of
2448 ways. Martin Atzmueller is responsible for a lot of this.
2449 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2451 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2452 *** correct ERROR type for various file operations
2453 *** some fixes for Lisp streams
2454 *** DEFMETHOD syntax checking
2455 *** changing old weird representation of debug information as
2456 strings (which, among their other deficiencies, don't transform
2457 correctly when you rename packages, and don't change their
2458 print representation when you change things like *PACKAGE*
2459 and *PRINT-LENGTH*) to symbols and lists of symbols
2460 He also made several improvements and fixed several bugs in DESCRIBE.
2461 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2463 *** misbehavior of WRITE-STRING/WRITE-LINE
2464 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2465 and several other LOOP problems as well
2466 *** DIRECTORY when similar filenames are present
2467 *** DEFGENERIC with :METHOD options
2468 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2469 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2470 *** argument ordering in FIND with :TEST option
2471 *** mishandled package designator argument in APROPOS-LIST
2472 *** various problems in the backquote readmacro
2473 *** a bug in APROPOS
2474 *** probably some others that I'm not describing very well here,
2475 since the CVS log documents them by reference to sbcl-devel
2476 messages, and the SourceForge archives aren't working well.:-(
2477 ** Dan Barlow improved the Alpha port (and is making progress on the
2478 PPC port, for those of you who think different).
2479 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2480 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2481 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2482 continues to work on the SPARC port (for those of you in a position
2483 to look down upon our little PC-compatible boxes from a great height).
2484 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2485 and uses that copy, rather than the current dynamic value, when
2486 it's trying to decide whether to truncate output. Thus e.g.
2487 (let ((*print-lines* 50))
2488 (pprint-logical-block (stream nil)
2490 (let ((*print-lines* 8))
2491 (print (aref possiblybigthings i) stream)))))
2492 should now truncate the logical block only at 50 lines, instead of
2493 often truncating it at 8 lines, as it did before.
2494 * The doc/cmucl/ directory, containing old CMU CL documentation
2495 from the time of the fork, is no longer part of the base system.
2496 SourceForge has shut down its anonymous FTP service, and with it
2497 my original plan for distributing the old CMU CL documentation
2498 there. For now, if you need these files you can download an old
2499 SBCL source release and extract them from it.
2500 * The fasl file version number changed again, for dozens of reasons,
2501 some of which are apparent above.
2503 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2504 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2505 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2506 patch, so that DISASSEMBLE output is much nicer.
2507 * The code in the SB-PROFILE package now seems reasonably stable.
2508 I still haven't decided what the final interface should look like
2509 (I'd like PROFILE to interact cleanly with TRACE, since both
2510 facilities use function encapsulation) but if you have a need
2511 for profiling now, you can probably use it successfully with
2512 the current CMU-CL-style interface.
2513 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2514 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2515 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2516 link now returns the dangling link itself, and for similar
2517 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2518 link itself. (In these cases the old code signalled an error and
2519 looped endlessly, respectively.) Thus, DIRECTORY now works even
2520 in the presence of dangling and cyclic symbolic links.
2521 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2522 is now a supported extension again, since the consensus on
2523 sbcl-devel was that it can be useful for ordinary development
2524 work, not just for debugging SBCL itself.
2525 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2526 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2527 that currently-defined functions might be redefined later with
2528 different return types.
2529 * Hash tables can be printed readably, as inspired by CMU CL code
2530 of Eric Marsden and SBCL code of Martin Atzmueller.
2531 * better error handling in CLOS method combination, thanks to
2532 Martin Atzmueller porting Pierre Mai's CMU CL patches
2533 * more overflow fixes for >16Mbyte I/O buffers
2534 * A bug in READ has been fixed, so that now a single Ctrl-D
2535 character suffices to cause end-of-file on character streams.
2536 In particular, now you only need one Ctrl-D at the command
2537 line (not two) to exit SBCL.
2538 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2540 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2541 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2542 does the right thing.
2543 * The implementation of some type tests, especially for CONDITION
2544 types, is now tidier and maybe faster, due to CMU CL code
2545 originally by Douglas Crosher, ported by Martin Atzmueller.
2546 * Some math functions have been fixed, and there are new
2547 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2548 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2549 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2550 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2551 likely to be built into sbcl-0.7.0.)
2552 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2553 CL, ported to SBCL by Martin Atzmueller)
2554 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2555 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2556 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2557 * There's a new slam.sh hack to shorten the edit/compile/debug
2558 cycle for low-level changes to SBCL itself, and a new
2559 :SB-AFTER-XC-CORE target feature to control the generation of
2560 the after-xc.core file needed by slam.sh.
2561 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2562 COMPILE-FILE is no longer supported, so that now every function
2563 gets an entry point, so that block compilation looks a little
2564 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2565 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2566 returns the number of bytes consed since the system started,
2567 rather than the number consed since the first time the function
2568 was called. (The new definition parallels ANSI functions like
2569 CL:GET-INTERNAL-RUN-TIME.)
2570 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2571 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2572 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2573 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2574 * Fasl file version numbers are now independent of the target CPU,
2575 since historically most system changes which required version
2576 number changes have affected all CPUs equally. Similarly,
2577 the byte fasl file version is now equal to the ordinary
2580 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2581 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2582 is no longer recognized. I apologize for this, because it was
2583 listed in SB-EXT as a supported extension, but I found that
2584 its existing behavior was poorly specified, as well as incorrectly
2585 specified, and it looked like too much of a mess to straighten it
2586 out. I have enough on my hands trying to get ANSI stuff to work..
2587 * many patches ported from CMU CL by Martin Atzmueller, with
2588 half a dozen bug fixes in pretty-printing and the debugger, and
2589 half a dozen others elsewhere
2590 * fixed bug 13: Floating point infinities are now supported again.
2591 They might still be a little bit flaky, but thanks to bug reports
2592 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2593 as flaky as they were.
2594 * The --noprogrammer command line option is now supported. (Its
2595 behavior is slightly different in detail from what the old man
2596 page claimed it would do, but it's still appropriate under the
2597 same circumstances that the man page talks about.)
2598 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2599 are now supported, and enabled by default. Thus, the compiler can
2600 handle many floating point and complex operations much less
2601 inefficiently. (Thus e.g. you can implement a complex FFT
2603 * The compiler now detects type mismatches between DECLAIM FTYPE
2604 and DEFUN better, and implements CHECK-TYPE more correctly, and
2605 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2606 thanks to patches from Martin Atzmueller.
2607 * various fixes to make the cross-compiler more portable to
2608 ANSI-conforming-but-different cross-compilation hosts (notably
2609 Lispworks for Windows, following bug reports from Arthur Lemmens)
2610 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2611 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2612 fixed thanks to Pierre Mai's CMU CL patches.
2613 * fixes to keep the system from overflowing internal counters when
2614 it tries to use i/o buffers larger than 16M bytes
2615 * fixed bug 45a: Various internal functions required to support
2616 complex special functions have been merged from CMU CL sources.
2617 (When I was first setting up SBCL, I misunderstood a compile-time
2618 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2619 * improved support for type intersection and union, fixing bug 12
2620 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2621 more obscure bugs as well
2622 * some steps toward byte-compiling non-performance-critical
2623 parts of the system, courtesy of patches from Martin Atzmueller
2624 * Christophe Rhodes has made some debian packages of sbcl at
2625 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2626 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2627 stable, but are nonetheless usable. When he's ready, I'd be happy
2628 to add them to the SourceForge "File Releases" section. (And if
2629 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2630 * new fasl file format version number (because of changes in
2631 internal representation of (OR ..) types to accommodate the new
2632 support for (AND ..) types, among other things)
2634 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2635 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2637 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2639 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2640 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2641 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2642 * DESCRIBE now works on structure objects again.
2643 * Most function call argument type mismatches are now handled as
2644 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2645 know whether the function will be redefined before the call is
2646 executed. (The compiler could flag local calls with full WARNINGs,
2647 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2648 it doesn't keep track of enough information to know whether calls
2649 are local in this sense.)
2650 * Compiler output is now more verbose, with messages truncated
2651 later than before. (There should be some supported way for users
2652 to override the default verbosity, but I haven't decided how to
2653 provide it yet, so this behavior is still controlled by the internal
2654 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2655 src/compiler/ir1util.lisp.)
2656 * Fasl file format version numbers have increased again, because
2657 support for the Gray streams extension changes the layout of the
2658 system's STREAM objects.
2659 * The Gray subclassable streams extension now works, thanks to a
2660 patch from Martin Atzmueller.
2661 * The full LOAD-FOREIGN extension (not just the primitive
2662 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2663 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2664 but like most other programs, it defaults to copying the Unix
2665 environment from the original process instead of starting the
2666 new process in an empty environment.
2667 * Extensions which manipulate the Unix environment now support
2668 an :ENVIRONMENT keyword option which doesn't smash case or
2669 do other bad things. The CMU-CL-style :ENV option is retained
2670 for porting convenience.
2671 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2672 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2674 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2676 * A patch from Martin Atzmueller seems to have solved the SIGINT
2677 problem, and as far as we know, signal-handling now works cleanly.
2678 (If you find any new bugs, please report them!)
2679 * The system no longer defaults Lisp source file names to types
2680 ".l", ".cl", or ".lsp", but only to ".lisp".
2681 * The compiler no longer uses special default file extensions for
2682 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2683 seems to expect a single default extension for all compiled code,
2684 and there's no compelling reason to try to stretch the standard
2685 to allow two different extensions.) Instead, byte-compiled files
2686 default to the same extension as native-compiled files.
2687 * Fasl file format version numbers have increased again, because
2688 a rearrangement of internal implementation packages made some
2689 dumped symbols in old fasl files unreadable in new cores.
2690 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2691 many fewer weird special cases.
2692 * Bug #17 (differing COMPILE-FILE behavior between logical and
2693 physical pathnames) has been fixed, and some related misbehavior too,
2694 thanks to a patch from Martin Atzmueller.
2695 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2696 by Tim Moore, ported to SBCL by Martin Atzmueller.
2697 * Martin Atzmueller fixed several filesystem-related problems,
2698 including bug #36, in part by porting CMU CL patches, which were
2699 written in part by Paul Werkowski.
2700 * More compiler warnings in src/runtime/ are gone, thanks to
2701 more patches from Martin Atzmueller.
2702 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2705 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2707 * DESCRIBE now works on CONDITION objects.
2708 * The debugger now handles errors which arise when trying to print
2709 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2711 * The build system now uses an additional file, customize-target-features.lisp,
2712 to allow local modifications to the target *FEATURES* list. (The point of
2713 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2714 debugging features enabled, without having to worry about propagating it
2715 into everyone's system when I do a "cvs update".) When no
2716 customize-target-features.lisp file exists, the target *FEATURES* list
2717 should be constructed the same way as before.
2718 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2719 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2720 warn about behavior which is undefined under the ANSI spec. Note: This
2721 is specified by ANSI, but it's not very popular with programmers.
2722 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2723 macro in the SBCL sources for an example of a workaround which you
2724 might use to make portable ANSI-standard code which does what you want.
2725 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2726 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2727 when it's used as a non-toplevel form. (This is required in order
2728 to implement the DEFCONSTANT-EQX macro.)
2729 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2730 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2731 funny things, due to bugs in the implementation of EVAL-WHEN
2732 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2733 non-toplevel DEFCONSTANTs are uncommon.)
2734 * The core file version number and fasl file version number have been
2735 incremented, because the old noncompliant DEFCONSTANT behavior involved
2736 calling functions which no longer exist, and because I also took the
2737 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2738 * fixed bug 1 (error handling before read-eval-print loop starts), and
2739 redid debugger restarts and related debugger commands somewhat while
2741 ** The QUIT debugger command is gone, since it did something
2742 rather different than the SB-EXT:QUIT command, and since it never
2743 worked properly outside the main toplevel read/eval/print loop.
2744 Invoking the new TOPLEVEL restart provides the same functionality.
2745 ** The GO debugger command is also gone, since you can just invoke
2746 the CONTINUE restart directly instead.
2747 ** The TOP debugger command is also gone, since it's redundant with the
2748 FRAME 0 command, and since it interfered with abbreviations for the
2750 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2752 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2753 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2754 some porting work by Martin Atzmueller)
2755 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2756 with a boatload of patches which he ported to SBCL. Now that those
2758 ** The system tries to make sure that its low-priority messages
2759 are prefixed by semicolons, to help people who like to use
2760 syntax highlighting in their ILISP buffer. (This patch
2761 was originally due to Raymond Toy.)
2762 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2763 patches originally written by Raymond Toy.
2764 ** The compiler understands coercion between single-value and
2765 multiple-VALUES type expressions better, getting rid of some very
2766 weird behavior, thanks to patches originally by Robert MacLachlan
2767 and Douglas Crosher.
2768 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2769 lambda lists, thanks to a patch originally by Pierre Mai.
2770 ** The system no longer bogusly warns about "abbreviated type
2772 ** The compiler gets less confused by inlining and RETURN-FROM,
2773 thanks to some patches originally by Tim Moore.
2774 ** The system no longer hangs when dumping circular lists to fasl
2775 files, thanks to a patch originally from Douglas Crosher.
2776 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2777 undefined function error.
2778 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2779 in structure slot initforms) for now, documented workaround instead:-|
2780 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2781 * fixed bug 5: added stubs for various Gray stream functions called
2782 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2783 installed, at least appropriate type errors are generated
2784 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2785 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2786 consistently in DEFMETHOD forms.
2787 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2788 it doesn't seem to affect SBCL after all
2789 * The C runtime system now builds with better optimization and many
2790 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2792 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2794 * The system is now under CVS at SourceForge (instead of the
2795 CVS repository on my home machine).
2796 * The new signal handling code has been tweaked to treat register
2797 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2798 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2799 downstream, e.g. in debug-int.lisp, has implicit dependencies
2800 on the unsignedness of integer representation of machine words,
2801 and that caused the system to bomb out with infinite regress
2802 when trying to recover from type errors involving signed values,
2803 e.g. (BUTLAST '(1 2 3) -1).)
2804 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2805 (This was one of the bugs Peter Van Eynde reported back in July.)
2806 * The system now uses code inspired by Colin Walters' O(N)
2807 implementation of MAP (from the cmucl-imp@cons.org mailing
2808 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2809 inline the MAP operation, and there is more than one
2810 sequence argument to the MAP call (so that it can't just
2811 do ETYPECASE once and for all based on the type of the
2812 single sequence argument). (The old non-inline implementation
2813 of the general M-argument sequence-of-length-N case required
2814 O(M*N*N) time when any of the sequence arguments were LISTs.)
2815 * The QUIT :UNIX-CODE keyword argument has been renamed to
2816 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2817 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2819 * Raymond Wiker's patches to port dynamic loading from Linux to
2820 FreeBSD have been added.
2821 * The BUGS file is now more nearly up to date, thanks in large part
2822 to Martin Atzmueller's review of it.
2823 * The debugger now flushes standard output streams before it begins
2824 its output ("debugger invoked" and so forth).
2825 * The core version number and fasl file version number have both
2826 been incremented, because of incompatible changes in the layout
2828 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2829 used to not be called for a saved Lisp image.)
2830 * Martin Atzmueller's version of a patch to fix a compiler crash,
2831 as posted on sbcl-devel 13 September 2000, has been installed.
2832 * Instead of installing Martin Atzmueller's patch for the
2833 compiler transform for SUBSEQ, I deleted the compiler transform,
2834 and transforms for some similar consing operations.
2835 * A bug in signal handling which kept TRACE from working on OpenBSD
2837 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2838 away by constant folding
2839 * The system now defines its address space constants in one place
2840 (in the Lisp sources), and propagates them automatically elsewhere
2841 (through GENESIS and the sbcl.h file). Therefore, patching the
2842 address map is less unnecessarily tedious and error-prone. The
2843 Lisp names of address space constants have also been systematized.
2844 * CVS tags like dollar-Header-dollar have been removed from
2845 the sources, because they have never saved me trouble and
2846 they've been source of trouble working with patches and other
2847 diff-related operations.
2848 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2849 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2851 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2853 * The system has been ported to OpenBSD.
2854 * The system now compiles with a simple "sh make.sh" on the systems
2855 that it's supported on. I.e., now you no longer need to tweak
2856 text in the target-features.lisp-expr and symlinks in src/runtime/
2857 by hand, the make.sh takes care of it for you.
2858 * The system is no longer so grossly inefficient when compiling code
2859 involving vectors implemented as general (not simple) vectors (VECTOR T),
2860 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2861 which dares to use the various sequence functions on non-simple
2862 vectors, takes less of a performance hit.
2863 * There is now a primitive type predicate VECTOR-T-P
2864 to test for the (VECTOR T) type, so that e.g.
2865 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2866 can now be compiled with some semblance of efficiency. (The old code
2867 turned the type declaration into a full call to %TYPEP at runtime!)
2868 * AREF on (VECTOR T) is still not fast, since it's still compiled
2869 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2870 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2871 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2872 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2873 without making full calls to SUBTYPEP at runtime.
2874 (Some analogous efficiency issues for non-simple vectors specialized to
2875 element types other than T, or for non-simple multidimensional arrays,
2876 have not been addressed. They could almost certainly be handled the
2877 same way if anyone is motivated to do so.)
2878 * The changes in array handling break binary compatibility, so
2879 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2880 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2881 instead of (VALUES T T).
2882 * By following the instructions that Dan Barlow posted to sbcl-devel
2883 on 2 July 2000, I was able to enable primitive dynamic object
2884 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2885 functionality is not implemented (since it calls ld to resolve
2886 library references automatically, requiring RUN-PROGRAM for its
2887 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2888 try to resolve library references) is now supported.
2889 * The system now flushes the standard output streams when it terminates,
2890 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2891 them at several other probably-convenient times, e.g. in each pass of
2892 the toplevel read-eval-print loop, and after evaluating a form given
2893 as an "--eval" command-line option. (These changes were motivated by a
2894 discussion of stream flushing issues on cmucl-imp in August 2000.)
2895 * The source transform for TYPEP of array types no longer assumes
2896 that an array whose element type is a not-yet-defined type
2897 is implemented as an array of T, but instead punts, so that the
2898 type will be interpreted at runtime.
2899 * There is now some support for cross-compiling in make.sh: each of
2900 the phases of make.sh has its own script. (This should be transparent
2901 to people doing ordinary, non-cross-compile builds.)
2902 * Since my laptop doesn't have hundreds of megabytes of memory like
2903 my desktop machine, I became more motivated to do some items on
2904 my to-do list in order to reduce the size of the system a little:
2905 ** Arrange for various needed-only-at-cold-init things to be
2906 uninterned after cold init. To support this, those things have
2907 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2908 symbols with such names are now uninterned after cold init).
2909 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2910 fasl files for cold load.
2911 ** Remove the old compiler structure pooling code (which used to
2912 be conditional on the target feature :SB-ALLOC) completely.
2913 ** Redo the representation of some data in cold init to be more compact.
2914 (I also looked into supporting byte compiled code at bootstrap time,
2915 which would probably reduce the size of the system a lot, but that
2916 looked too complicated, so I punted for now.)
2917 * The maximum signal nesting depth in the src/runtime/ support code has
2918 been reduced from 4096 to 256. (I don't know any reason for the very
2919 large old value. If the new smaller value turns out to break something,
2920 I'll probably just bump it back up.)
2921 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2923 * Many, many bugs reported by Peter Van Eynde have been added to
2924 the BUGS list; some have even been fixed.
2925 * While enabling dynamic object file loading, I tried to make the
2926 code easier to understand, renaming various functions and variables
2927 with less ambiguous names, and changing some function calling
2928 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2929 * While trying to figure out how to do the OpenBSD port, I tried to
2930 clean up some of the code in src/runtime/. In particular, I dropped
2931 support for non-POSIX signal handling, added various comments,
2932 tweaked the code to reduce the number of compilation warnings, and
2933 renamed some files to increase consistency.
2934 * To support the new automatic configuration functionality in make.sh,
2935 the source file target-features.lisp-expr has been replaced with the
2936 source file base-target-features.lisp-expr and the machine-generated
2937 file local-target-features.lisp-expr.
2938 * fixed a stupid quoting error in make.sh so that using CMU CL
2939 "lisp -batch" as cross-compilation host works again
2941 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2943 * DESCRIBE no longer tries to call itself recursively to describe
2944 bound/fbound values, so that it no longer fails on symbols which are
2945 bound to themselves (like keywords, T, and NIL).
2946 * DESCRIBE now works on generic functions.
2947 * The printer now prints less-screwed-up representations of closures
2948 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2949 * A private symbol is used instead of the :EMPTY keyword previously
2950 used to mark empty slots in hash tables. Thus
2951 (DEFVAR *HT* (MAKE-HASH-TABLE))
2952 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2953 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2954 now does what ANSI says that it should. (You can still get
2955 similar noncompliant behavior if bang on the hash table
2956 implementation with all the symbols you get back from
2957 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2958 This breaks binary compatibility, since tests for equality to
2959 :EMPTY are wired into things like the macroexpansion of
2960 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2962 * There's now a minimal placeholder implementation for CL:STEP,
2963 as required by ANSI.
2964 * An obscure bug in the interaction of the normal compiler, the byte
2965 compiler, inlining, and structure predicates has been patched
2966 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2967 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2969 * Missing ordinary arguments in a macro call are now detected even
2970 when the macro lambda list contains &KEY or &REST.
2971 * The debugger no longer complains about encountering the top of the
2972 stack when you type "FRAME 0" to explicitly instruct it to go to
2973 the top of the stack. And it now prints the frame you request even
2974 if it's the current frame (instead of saying "You are here.").
2975 * As specified by ANSI, the system now always prints keywords
2976 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2978 * The default initial SIZE of HASH-TABLEs is now smaller.
2979 * Type information from CLOS class dispatch is now propagated
2980 into DEFMETHOD bodies, so that e.g.
2981 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2983 is now basically equivalent to
2984 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2985 (DECLARE (TYPE SINGLE-FLOAT X))
2987 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2988 operation, without having to do run-time type dispatch.
2989 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2990 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2991 * Since I don't seem to be making big file reorganizations very often
2992 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2993 is overflowing my ability to conveniently back them up), I've finally
2994 checked the system into CVS. (The CVS repository is on my home system,
2995 not at SourceForge -- putting it on SourceForge might come later.)
2996 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2997 high-level GC-NOTIFY-FOO functions send their output. (There's
2998 still very little control of where low-level verbose GC functions
2999 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3000 less than it used to -- the GC-NOTIFY-FOO functions are now under
3001 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3002 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3003 in only one place in the source code, and propagates it automatically
3004 everywhere that it's needed. Thus e.g. when I bump the version from
3005 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3006 * The C source files now include boilerplate legalese and documentation
3007 at the head of each file (just as the Lisp source files already did).
3008 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3009 to his page will be replaced with a link to his new CLiki service.
3011 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3013 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3014 * The build process now looks for GNU make under the default name "gmake",
3015 instead of "make" as it used to. If GNU make is not available as "gmake"
3016 on your system, you can change this default behavior by setting the
3017 GNUMAKE environment variable.
3018 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3019 can build without error under CMU CL.
3021 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3023 * There is now a partial SBCL user manual (with some new text and some
3024 text cribbed from the CMU CL manual).
3025 * The beginnings of a profiler have been added (starting with the
3026 CMU CL profiler and simplifying and cleaning up). Eventually the
3027 main interface should be through the TRACE macro, but for now,
3028 it's still accessed through vaguely CMU-CL-style functions and macros
3029 exported from the package SB-PROFILE.
3030 * Some problems left over from porting CMU CL to the new
3031 cross-compilation bootstrap process have been cleaned up:
3032 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3033 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3034 part when getting rid of the compiler *BACKEND* stuff.)
3035 ** The value of *NULL-TYPE* was screwed up, because it was
3036 being initialized before the type system knew the final
3037 definition of the 'NULL type. This screwed up several key
3038 optimizations in the compiler, causing inefficiency in all sorts
3039 of places. (I found it because I wanted to understand why
3040 GET-INTERNAL-RUN-TIME was consing.)
3041 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3042 PROCLAIM FTYPE information. Unfortunately this broke binary
3043 compatibility again, since now the forms output by DEFGENERIC
3044 to refer to functions which didn't exist in 0.6.3.
3045 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3046 can use the new (as of 0.6.3) transform for SOME into MAP into
3048 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3049 values to (INTEGER 0 1000000), so that the time code will no longer
3050 occasionally get blown up by Linux returning 1000000 microseconds
3051 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3052 its output conform to the ANSI spec. (Alas, this makes its output
3053 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3054 * A full call to MAP NIL with a single sequence argument no longer conses.
3055 * fixes to problems pointed out by Martin Atzmueller:
3056 * The manual page no longer talks about multiprocessing as though
3057 it were currently supported.
3058 * The ILISP support patches have been removed from the distribution,
3059 because as of version 5.10.1, ILISP now supports SBCL without us
3060 having to maintain patches.
3061 * added a modified version of Raymond Toy's recent CMU CL patch for
3062 EQUALP comparison of HASH-TABLE
3064 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3066 * The system still can't cross-compile itself with
3067 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3068 entails), but at least it can compile more of itself that way
3069 than it used to be able to, and various buglets which were uncovered
3070 by trying to cross-compile itself that way have now been fixed.
3071 * This release breaks binary compatibility again. This time
3072 at least I've incremented the FASL file format version to 2, so that the
3073 problem can be detected reliably instead of just causing weird errors.
3074 * various new style warnings:
3075 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3076 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3077 ** using the lexical binding of a variable named in the *FOO* style
3078 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3079 as specified by ANSI.
3080 * *RANDOM-STATE* is no longer automatically initialized from
3081 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3082 default behavior of the system is to repeat its behavior every time
3083 it's run. If you'd like to change this behavior, you can always
3084 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3085 old convention there was no comparably easy way to get the system to
3086 repeat its behavior every time it was run.
3087 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3088 FTYPE declarations has been removed, in favor of their ANSI
3089 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3090 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3091 the types of their sequence arguments can be determined at compile time.
3092 This is done through a new open code expansion for MAP which eliminates
3093 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3094 argument types can be determined at compile time.
3095 * The optimizer now transforms COERCE into an identity operation when it
3096 can prove that the coerced object is already of the correct type. (This
3097 can be a win for machine generated code, including the output of other
3098 optimization transforms, such as the MAP transform above.)
3099 * Credit information has been moved from source file headers into CREDITS.
3100 * Source file headers have been made more standard.
3101 * The CASE macro now compiles without complaining even when it has
3104 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3106 * (Note that the way that the PCL macroexpansions were rewritten
3107 to accommodate the change in DEFGENERIC below breaks binary
3108 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3109 not run under sbcl-0.6.2. Once we get out of alpha releases,
3110 i.e. hit release 1.0.0, we'll probably try to maintain binary
3111 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3112 and sbcl-1.4.4. Until then, however, it might be fairly common
3113 for maintenance releases to break binary compatibility.)
3114 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3116 * The reporting of unhandled signals has been changed to print some
3117 explanatory text as well as the report form. (Previously only
3118 the report form was printed.)
3119 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3120 it defines, so that the compiler no longer issues undefined function
3121 warnings for compiled-but-not-yet-loaded generic functions.
3122 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3123 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3124 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3125 section of the ANSI spec are supported.
3126 * The "" nickname for the "KEYWORD" package has been removed.
3127 The reader still handles symbol tokens which begin with a package marker
3128 as keywords, but it doesn't expose its mechanism for doing so in the
3129 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3130 * The system now issues STYLE-WARNINGs for contradictory TYPE
3131 proclamations. (Warnings for contradictory FTYPE proclamations would
3132 be nice too, but those can't be done usefully unless the type system
3133 is made smarter about FUNCTION types.)
3134 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3135 systematized, so that "*target-*.lisp is supposed to exist only on the
3136 target and imply that there's a related file which exists on the
3137 host, and *host-*.lisp is supposed to exist only on the host and imply
3138 that there's a related file which exists on the target. This involves a
3139 lot of renaming. Hopefully the acute confusion caused by the renaming
3140 will be justified by the reduction in chronic confusion..
3141 ** runtime-type.lisp -> early-target-type.lisp
3142 ** target-type.lisp -> late-target-type.lisp
3143 ** early-host-format.lisp -> early-format.lisp
3144 ** late-host-format.lisp -> late-format.lisp
3145 ** host-error.lisp -> misc-error.lisp
3146 ** early-error.lisp -> early-target-error.lisp
3147 ** late-error.lisp -> late-target-error.lisp
3148 ** host-defboot.lisp -> early-defboot.lisp
3149 ** code/misc.lisp -> code/target-misc.lisp
3150 ** code/host-misc.lisp -> code/misc.lisp
3151 ** code/numbers.lisp -> code/target-numbers.lisp
3152 ** code/early-numbers.lisp -> numbers.lisp
3153 ** early-host-type.lisp -> early-type.lisp
3154 ** late-host-type.lisp -> late-type.lisp
3155 ** host-typep.lisp -> typep.lisp
3156 ** load.lisp -> target-load.lisp
3157 ** host-load.lisp -> load.lisp
3158 ** host-disassem.lisp -> disassem.lisp
3159 ** host-insts.lisp -> insts.lisp
3160 ** byte-comp.lisp -> target-byte-comp.lisp
3161 ** host-byte-comp.lisp -> byte-comp.lisp
3162 ** host-signal.lisp -> signal.lisp
3163 ** host-defstruct.lisp -> defstruct.lisp
3164 ** late-target-type.lisp -> deftypes-for-target.lisp
3165 Furthermore, several other previously target-only files foo.lisp (e.g.
3166 hash-table.lisp and random.lisp) have been split into a target-and-host
3167 foo.lisp file and a target-only target-foo.lisp file, with their key type
3168 definitions in the target-and-host part, so that the cross-compiler will
3169 know more about target types.
3170 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3171 gone away. In their place are various *BACKEND-FOO* variables
3172 corresponding to the slots of the old structure.
3173 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3174 into the target SBCL has been fixed.
3175 * The chill.lisp system for loading cold code into a running SBCL
3177 * Support for the CMU CL "scavenger hook" extension has been removed.
3178 (It was undocumented and unused in the CMU CL sources that SBCL was
3179 derived from, and stale in sbcl-0.6.1.)
3180 * Various errors in the cross-compiler type system were detected
3181 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3182 (enabling various consistency checks). Many of them were fixed,
3183 but some hard problems remain, so the compiler is back to
3184 running without *TYPE-SYSTEM-INITIALIZED* for now.
3185 * As part of the cross-compiler type system cleanup, I implemented
3186 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3187 * I have started adding UNCROSS calls throughout the type system
3188 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3189 on cross-compiler input files will be able to go away, and various
3191 * CONSTANTP now returns true for quoted forms (as explicitly required
3194 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3196 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3197 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3198 (MAKE-LIST -1). In the longer term, it ought to become true
3199 that declarations are assertions even at SAFETY 1. For now, it's not
3200 quite true even at SAFETY 3, but it's at least more nearly true..
3201 (Note that this change seems to increases the size of the system by
3202 O(5%) and to decrease the speed of the compiler by 20% or more.)
3203 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3204 for the problem of printing dozens of lines of distracting information
3205 about low-level system machinery as part of the top stack frame
3206 on entry to the debugger when an undefined function was called.
3207 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3208 is not reset to COMMON-LISP-USER.
3209 * Compilation of stuff related to dyncount.lisp has been made conditional
3210 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3211 smaller. The various dyncount-related symbols have been moved into
3212 a new "SB-DYNCOUNT" package.
3213 * tty-inspect.lisp has been renamed to inspect.lisp.
3214 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3215 feature has gone away. (When we eventually port to other flavors of
3216 libc and/or Unix, we'll try to make the differences between flavors
3217 invisible at the user level.)
3218 * Various other *FEATURES* tags, and/or their associated conditionals,
3219 have been removed if obsolescent, or given better documentation, or
3220 sometimes given more-mnemonic names.
3222 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3224 * tidied up "make.sh" script
3225 * tidied up system directory structure
3226 * better "clean.sh" behavior
3227 * added doc/FOR-CMUCL-DEVELOPERS
3228 * many many small tweaks to output format, e.g. removing possibly-confusing
3229 trailing #\. character in DESCRIBE-INSTANCE
3230 * (EQUALP #\A 'A) no longer signals an error.
3231 * new hashing code, including EQUALP hashing
3232 * tidied up Lisp initialization and toplevel
3233 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3234 * command line argument processing
3235 * added POSIX-GETENV function to deal with Unix-ish environment variables
3236 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3237 terminating SBCL on EOF
3238 * non-verbose GC by default
3239 * There is no more "sbcl" shell script; the sbcl file is now the C
3240 runtime executable (just like CMU CL).
3241 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3243 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3244 symbol and package information as Lisp native symbol and package objects
3245 instead of strings naming symbols and strings naming packages. This way,
3246 whenever packages are renamed (as in warm init), debug information is
3247 transformed along with everything else.
3248 * tweaked the optimization policy declarations which control the building
3249 of SBCL itself. Now, among other things, the system no longer saves
3250 source location debugging information. (This helps two problems at once
3251 by reducing SBCL size and by keeping SBCL from trying to look for its
3252 sources -- which may not exist -- when reporting errors.)
3253 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3254 debugging and testing purposes
3255 * cleaned up printing, making the printer call PRINT-OBJECT for
3256 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3257 methods, giving nearly-ANSI behavior
3258 * converted almost all special variables to use *FOO* naming convention
3259 * deleted PARSE-TIME functionality, since it can be done portably
3260 * moved some files out of cold init into warm init
3261 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3263 * regularized formatting of source files
3264 * added an install.sh script
3265 * fixed ridiculous memory usage of cross-compiler by making
3266 compiler/alloc.lisp not try to do pooling unless it can hook
3267 itself into the GC of the cross-compilation host. Now the system
3268 builds nicely on my old laptop.
3269 * added :SB-ALLOC in target-features.lisp-expr
3270 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3271 was not implemented)
3272 * re-did condition handling and note reporting in the compiler. Notes
3273 are no longer handled by signalling conditions. Style warnings
3274 and warnings are handled more correctly and reported in such a way
3275 that it's easy to find one or the other in your output (so that you
3276 can e.g. figure out which of many problems caused COMPILE-FILE to
3278 * changed the severity of several compiler warnings from full WARNING
3279 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3280 compiler note reporting so that it doesn't use the condition system
3281 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3282 COMPILE-FILE command)
3283 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3284 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3285 no longer supported, since their implementation was deeply intertwingled
3286 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3287 * removed bogus "support" for compiler macros named (SETF FOO), and
3288 removed the compiler macro for SETF INFO (but only after making a fool
3289 of myself on the cmucl-imp mailing list by posting a bogus patch for
3290 DEFINE-COMPILER-MACRO..)
3291 * Compiled files containing forms which have side effects on the Lisp
3292 reader (such as DEFPACKAGE forms) are now handled more correctly.
3293 (Compiler queuing of top level lambdas has been suppressed by setting
3294 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3295 * deleted various currently-unused source files, e.g. gengc.lisp. They
3296 may be added back at some point e.g. when porting to other architectures,
3297 but until they are it's distracting to distribute them and to try to
3299 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3300 there were so many of them they're just distractions, and UNCROSS is
3301 known to be able to handle the current sources
3302 * moved PROFILE functionality into TRACE, so that it will be clear
3303 how the wrapping and unwrapping of functions when you profile them
3304 interacts with the wrapping and unwrapping of functions when you
3305 trace them. (Actually, the functionality isn't there yet, but at least
3306 the interface specification is there. Hopefully, the functionality will
3307 arrive with some future maintenance release.)
3308 * removed host-oops.lisp
3309 * changed signature of QUIT function to allow UNIX-CODE argument
3310 * fixed READ-SEQUENCE bug
3311 * tweaked verbose GC output so that it looks more like the progress
3312 output that ANSI specifies for functions like LOAD
3313 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3314 * added <http://sbcl.sourceforge.com> to the banner information printed by