1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
3 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
4 space for its heap. (thanks to Thiemo Seufer)
5 * minor incompatible change: eof selects abort in the debugger.
6 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
7 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
9 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
10 deprecated, and will go away in a future revision of SBCL.
11 * bug fix: discriminating functions for generic function classes
12 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
13 make invalid assumptions about method precedence order. (reported
15 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
16 * bug fix: correct pathname printing with printer escaping is on.
17 (thanks to Kevin Reid)
18 * bug fix: complex VOP definitions in "user-space" no longer trigger
19 package locks. (reported by Zach Beane)
20 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
21 for funcallable-instance functions, and is no different from
23 * optimizations: REMOVE-DUPLICATES now runs in linear time on
24 lists in some cases. This partially fixes bug 384.
25 * flush all standard streams before prompting in the REPL and the
28 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
29 there is only one thread in the session
30 ** bug fix: memory leak for streams created in one thread and
33 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
34 * New feature: Experimental support for bivalent streams: streams
35 opened with :element-type :default now allow character and binary
37 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
38 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
40 * bug fix: no more highly sporadic "couldn't check whether ~S is
41 readable" when reading a stream and an interrupt hits in the middle
42 of a select system call
43 * compiler better recognizes complex arrays (reported by Eduardo
45 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
46 for variables on SBCL built with linkage-tables. (reported by Luis
48 * various error reporting improvements.
49 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
50 (Thanks to Thiemo Seufer)
51 * bug fix: nested reader invokations work correctly
52 * bug fix: it is possible to have simultaneous references to foreign
53 code and foreign data with the same name.
55 ** added x86-64 support
56 ** incompatible change: the threading api now works with thread
57 objects instead of thread ids
58 ** bug fix: threads are protected from signals and interruption when
59 starting up or going down
60 ** bug fix: a race where an exiting thread could lose its stack to gc
61 ** bug fix: don't halt on infinite error in threads if possible
62 ** fixed numerous gc deadlocks introduced in the pthread merge
63 ** bug fix: fixed thread safety issues in read and print
64 ** bug fix: debugger doesn't hang on session lock if interrupted at
65 an inappropriate moment
66 ** bug fix: run-program is now thread safe(r)
67 ** bug fix: inner with-recursive-lock no longer releases the mutex
68 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
69 * fixed some bugs revealed by Paul Dietz' test suite:
70 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
71 EXPECTED-TYPE slots filled.
72 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
74 ** MAKE-CONDITION accepts classes as type-designators.
75 ** COMPILE may never return NIL.
76 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
77 range before calling Unix time functions
79 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
80 * numerous signal handling fixes to increase stability
81 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
82 * minor incompatible change: we now correctly canonize default
83 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
84 as per the MOP, rather than the historical (INITARG INITFUNCTION
85 INITFORM). (reported by Bruno Haible)
86 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
87 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
89 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
90 pathname is a directory pathname.
91 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
92 * dynamic space size on PPC has been increased to 768Mb. (thanks to
94 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
95 :METACLASS argument in addition to a class name. (reported by
96 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
97 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
98 (reported by Bruno Haible; patch from Gerd Moellmann)
99 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
101 * bug fix: more cleanups to the floating point exception handling on
102 x86-64 (thanks to James Knight)
103 * bug fix: the compiler does not try to constant fold calls of
104 COERCE and BIT-* functions when they return freshly constructed
105 objects. (reported by Nikodemus Siivola and Paul Dietz)
106 * optimization: improved the MIPS versions of generic (in the
107 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
108 * optimization: direct conversion of (unsigned-byte 32) to floats on
109 the PowerPC platform.
110 * optimization: structure instances with raw slots now use less
111 memory, and probably show better memory locality. (thanks to
113 * optimization: DYNAMIC-EXTENT declarations for lists and closures
114 are treated as requests for stack allocation on the x86-64,
115 Alpha-32, PPC and SPARC platforms.
116 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
117 the wrong file descriptor; implementation of SOCKET-OPEN-P.
118 (thanks to Tony Martinez)
120 ** gcing a dead thread can no longer lead to lockups
121 ** threads block signals until they are set up properly
122 ** errno is no longer shared by threads
123 ** interrupt-thread restores the eflags register on x86
124 ** fixed some lockups due to gc/thread interaction
125 * fixed some bugs revealed by Paul Dietz' test suite:
126 ** invalid dotted lists no longer raise a read error when
128 ** signal an error if a symbol that names a declaration is used
129 as the name of a type, or vice versa
130 ** allow using the (declare (typespec var*)) abbreviation for
131 (declare (type typespec var*)) with all type specifiers
132 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
133 ** always return NIL from PPRINT-POP when OBJECT is NIL
134 ** don't signal errors when pretty-printing malformed LABELS,
135 FLET or MACROLET forms
136 ** declarations in a DOLIST body are also in scope for the
138 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
140 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
143 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
144 * fixed cross-compiler leakages that prevented building a 32-bit
145 target with a 64-bit host compiler.
146 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
147 opened with :IF-EXISTS :OVERWRITE.
148 * fixed bug 281: error for an invalid qualifier in a short-form method
149 combination method is not signalled until the faulty method is called.
150 * bug fix: iteration variable type inferrer failed to deal with open
151 intervals. (reported by Alan Shields)
152 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
153 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
154 or more runtime options were provided to the sbcl binary.
155 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
156 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
157 * optimization: there's now a fast-path for fixnum arguments in the
158 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
159 * optimization: the code generated on x86-64 is more compact thanks
160 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
161 * bug fix: floating-point exception handling now partly works on
162 x86-64. (Thanks to James Knight)
163 * improvement to the MIPS backend from Thiemo Seufer: C-style
164 64-bit long long arguments and return values to alien functions
166 * fixed some bugs revealed by Paul Dietz' test suite:
167 ** the type-error signalled from WARN has a filled-in DATUM slot.
168 ** the type-error required when a stream is not associated with
169 a file has the stream as its datum.
170 ** type-errors on single-floats on x86-64 no longer have
171 :INVALID-OBJECT as the datum
172 ** the type-errors signalled for invalid function names now have
173 a correct expected type
174 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
175 for structures defined with a :TYPE. Documentation strings for
176 typed structures are no longer immediately discarded
177 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
178 broadcast streams and synonym streams. FILE-LENGTH now also works
179 on broadcast streams.
181 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
182 * incompatible change: the --noprogrammer option, deprecated since
183 version 0.7.5, has been removed. Please use the equivalent
184 --disable-debugger option instead.
185 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
187 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
188 inoperational for a while now) has been completely removed.
189 * null lexical environments are now printed as #<NULL-LEXENV>,
190 significantly reducing the amount of clutter in typical backtraces.
191 * documentation on weak pointers, finalization, and after GC hooks
192 has been added to the manual.
193 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
194 as other specialized array types, is much faster. SUBSEQ and
195 COPY-SEQ on such arrays have also been sped up.
196 * optimization: EQL is now more efficient when at least other argument
197 is known to be of type (OR FIXNUM (NOT NUMBER)).
198 * fixed bug: the runtime is now less vulnerable to changes in the
199 size of the SBCL object on OS X, and virtual memory is reserved for
200 all spaces that need to be at a fixed address.
201 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
202 * fixed bug: finalizers and after GC hooks that cause consing are now
204 * fixed bug: compiler error messages and summaries are now printed to
205 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
206 * fixed inference of the upper bound of an iteration variable.
207 (reported by Rajat Datta).
208 * fixed bug 211e: calling local functions with duplicated constant
209 keyword argument no longer causes a bogus style warning about an
211 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
212 ftype declaration to be disregarded. (reported by Dave Roberts)
213 * fixed bug 373: caused by erronous compilation of references to alien
214 variables in the runtime on ppc/darwin.
215 * fixed bug 376: CONJUGATE type deriver.
216 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
217 (reported by Baughn on #lisp)
218 * a cross-compiler bug on non-x86 platforms has been identified and
219 fixed. (thanks to Bruno Haible)
220 * improvements to the MIPS runtime code for increased stability.
221 (thanks to Thiemo Seufer)
222 * increased the maximimum compact environment size to allow
223 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
224 * partial workaround for bug 135: don't name the function we're
225 calling for hairy cases of EVAL, so as not to accumulate one environment
226 entry per call to EVAL. (reported by Kevin Reid)
227 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
228 * optimization: type testing for non-vector arrays should be faster.
229 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
231 * bug fix: setting 31st element of a bit vector to zero did not work
233 * bug fix: redefining a class definition which failed due to a
234 previous accessor / function clash now works (but see BUGS entry
235 #380 for more problems in this area). (thanks to Zach Beane)
236 * the long form of DEFINE-METHOD-COMBINATION disables method group
237 checking when given a single method group with pattern *. (thanks
239 * on x86 compiler supports stack allocation of results of simple
240 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
241 * support for building and running on Mac OS X 10.4 "Tiger" has been added
242 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
243 * fixed some bugs related to Unicode integration:
244 ** the restarts for recovering from input and output encoding
245 errors only appear when there is in fact such an error to
247 * fixed some bugs revealed by Paul Dietz' test suite:
248 ** MISC.549 and similar: late transformation of unsafe type
249 assertions into derived types caused unexpected code
251 ** SCALE-FLOAT type deriver is less wrong.
252 ** type derivers for EXP, LOG and similar functions compute result
253 types for complex arguments better.
254 ** (MISC.563) CONJUGATE type deriver works for very restricted
256 ** out-of-line type testers for character strings are available.
257 ** EQUAL compiler transform understands specialness of objects
259 ** accessing double-floats stored on the stack now works on x86-64.
260 ** debugger internals could sometimes create invalid lispobjs,
261 resulting in GC crashes.
262 ** MISC.548: type check weakening can convert required type into
264 ** initialization forms for bindings are not in scope of free special
267 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
268 * incompatible change: thread support for non-NPTL systems has
269 been removed - locking is buggy and unreliable. A threaded
270 SBCL build will now warn at startup and refuse to create
271 new threads, unless futex support is detected in the kernel
272 * incompatible change: the top level REPL now has only an ABORT
273 restart associated with it, not TOPLEVEL and ABORT as it used to.
274 TOP and TOPLEVEL are now available as debugger commands for
275 returning to the top level.
276 * incompatible change: forms evaluated in the REPL now use the
277 global optimization policy.
278 * incompatible change: user- and system-initialization files are
279 no longer processed with LOAD, but by READ and EVAL; hence the
280 global optimization policy, startup package, readtable, etc,
282 * The .fasl file format number has been incremented because of
283 various incompatible changes.
284 * internal entry point details and argument counts no longer appear
285 in backtraces unless explicitly requested by setting
286 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
287 * built-in and standard functions no longer have names like "top
288 level local call to FOO".
289 * fixed bug 32: functions defined in non-null lexical environments
290 now have more legible printed representation
291 * fixed bug 33: functions defined in non-null lexical environemnts
292 are now more amenable to inspection by INSPECT.
293 * workaround for bug 354: XEPs no longer appear in backtraces unless
294 explicitly requested.
295 * fixed bug: receiving the signal which results from attempting to
296 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
297 SIGBUS on other *BSDs) on architectures where the C stack is also
298 the Lisp stack (x86 and x86-64) from foreign code no longer leads
299 to debugger confusion or wild instability. (reported by Cheuksan
301 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
302 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
303 (reported by Lutz Euler)
304 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
305 compiled code. (reported by Paul Dietz)
306 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
307 specialized parameter to a method to something that is not TYPEP
308 the specializer is now possible.
309 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
310 face of package deletion.
311 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
312 pathname. (reported by David Tolpin on c.l.l)
313 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
314 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
315 STRING-STREAM and FILE-STREAM, respectively.
316 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
317 than previously; in addition, its test suite is now run on build.
318 (thanks to Luke Gorrie)
319 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
320 * optimization: added a immediate representation for single-floats
322 * fixed some bugs revealed by Paul Dietz' test suite:
323 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
324 ** attempting to create a package with a colliding nickname causes
325 correctable errors to be signalled.
326 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
327 ** several x86-64 backend bugs related to sign-extension of immediate
330 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
331 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
332 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
334 * fixed loading of multiply forward-referenced layouts.
335 (thanks to Cheuksan Wang)
336 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
337 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
338 (see COMPILE-FILE documentation for details of :PRINT option)
339 * fixed bugs 19 and 317: fixed-format floating point printing is
340 more accurate. This also fixes a bug reported by Adam Warner
341 related to the ~@F format directive.
342 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
344 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
345 dispatch table if the from-char is a dispatch macro character.
346 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
347 by the wordsize no longer ignore the last word. (reported by Lutz
349 * fixed bug in type checking of dynamic-extent variables. (reported
351 * optimization: sequence traversal functions use their freedom to
352 coerce function designators to functions.
353 * optimization: code with many calls to CLOS methods specialized on
354 CLOS classes has had redundant type checks removed.
355 * optimization: added declarations to speed up operations that access
356 the internal character database (for example STRING-UPCASE)
357 * optimization: comparison operations between floats and sufficiently small
358 fixnums no longer create extra rationals
359 * fixed some bugs related to Unicode integration:
360 ** portions of multibyte characters at the end of buffers for
361 character-based file input are correctly transferred to the
362 start of the buffer at the next read.
363 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
364 passing it through to OPEN.
365 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
366 argument given to internal calls to OPEN.
367 ** the built-in comment readers (introduced by character sequences
368 ";" and "#|") are more forgiving to encoding errors; they will
369 STYLE-WARN and then attempt to resync the stream at a character
370 boundary. (thanks to Teemu Kalvas)
371 * fixed some bugs in the x86-64 port:
372 ** Negative short int return values from c-calls are sign-extended
374 ** The stack is aligned to 16-bytes for c-calls, as required by
375 the ABI. (thanks to Cheuksan Wang)
376 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
377 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
378 for enums. (thanks to Vincent Arkesteijn)
379 ** Multiple small optimizations and bugfixes for floating point
381 * fixed some bugs revealed by Paul Dietz' test suite:
382 ** Space, Tab, Linefeed, Return and Page have the invalid
383 secondary constituent character trait.
384 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
386 ** WITH-INPUT-FROM-STRING should only update the index place on
388 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
390 ** Bit-array operations (BIT-AND and similar) worked incorrectly
391 with one-dimensional arrays with fill pointers.
392 ** TYPE-OF failed on a complex with an integer realpart and a
394 ** compiler failure during type inference for the code of form
395 (IF (EQL X (THE ...)) ...) (MISC.535).
397 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
398 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
399 platform. The port supports 61-bit fixnums, large memory spaces
400 and reloading shared object files.
401 * enhancement: saving cores with foreign code loaded is now
402 supported on ppc/Darwin in addition to the previously supported
404 * enhancement: the statistical profiler now walks deeper into the
405 call stack for more meaningful call-graphs and accrued time
406 reports (x86/x86-64 only). It also now reports time spent in
408 * enhancement: it is now possible to trace most individual methods
409 of a generic function in addition to tracing the generic function
411 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
413 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
414 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
415 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
416 produces an error. (thanks to Vincent Arkesteijn)
417 * bug fix: NAMESTRING on pathnames with :WILD components in their
418 directories works correctly. (thanks to Artem V. Andreev)
419 * fixed bug 125: compiler preserves identity of closures. (reported
421 * bug fixed: functions with &REST arguments sometimes failed with
422 "Undefined function" when compiled with (DEBUG 3). (reported by
424 * bug fix: overflow during compiling of setting element of a bit
425 vector with constant index and value. (reported by Timmy Douglas)
426 * build fix: fixed the dependence on *LOAD-PATHNAME* and
427 *COMPILE-FILE-PATHNAME* being absolute pathnames.
428 * on x86 compiler partially supports stack allocation of dynamic-extent
430 * GO and RETURN-FROM do not check the extent of their exit points
431 when compiled with SAFETY 0.
432 * fixed some bugs related to Unicode integration:
433 ** encoding and decoding errors are now much more robustly
434 handled; it should now be possible to recover even from invalid
435 input or output to the terminal. (thanks to Teemu Kalvas)
436 ** provided a first cut at implementing STRING-TO-OCTETS and
437 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
438 ** altered the SB-MD5 contributed module slightly, changing the
439 interface just enough for it to be supportable for builds where
440 lisp characters are not eight bits.
441 * fixed some bugs revealed by Paul Dietz' test suite:
442 ** the FORMATTER-generated functions for ~V[ conditionals require
443 the correct number of arguments.
444 ** READ-FROM-STRING returns the mandated second value when applied
445 to displaced strings.
446 ** the #\Rubout and #\Backspace characters are treated as invalid
447 constituent characters by the tokenizer.
449 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
450 * new feature: reloading changed shared object files with
451 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
452 * new feature: references to foreign variables and functions
453 can now be compiled and loaded before the corresponding shared
454 object file is loaded, as long as the foreign definitions are
455 available at runtime.
456 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
457 supported. (thanks to Dan Debertin)
458 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
459 just keywords. (thanks to Vincent Arkesteijn)
460 * fixed bug #331: structure-class instances corresponding to
461 DEFSTRUCT forms are now created eagerly.
462 * fixed bug #345: backtraces from calls to undefined functions work
463 on x86 as well. Related bug #61 is now also partially fixed on x86
464 (backtraces from throws to unknown catch tags.)
465 * bug fix: lambda-list parsing is now stricter vrt. order and number
466 of lambda-list keywords.
467 * bug fix: as specified by AMOP, an error is signalled if a
468 class-option appears multiple times in a DEFCLASS form. (reported
470 * bug fix: RANDOM can be compiled when the compiler derives the type
471 of its numeric argument as a disjoint set of small integers.
472 (reported by Paul Dietz)
473 * bug fix: starting a core saved with shared objects loaded when
474 those objects are not available no longer causes threaded SBCL to
475 hang. (reported by Sean Ross)
476 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
478 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
479 argument, which must always be NIL. (reported by Kalle Niemitalo)
480 * bug fix: printing 1.0d+23 no longer results in an error.
481 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
482 * bug fix: structure slot setters preserve evaluation order. (thanks
484 * fixed some bugs related to Unicode integration:
485 ** RUN-PROGRAM can allow its child to take input from a Lisp
486 stream. (reported by Stefan Scholl)
487 ** ASDF-INSTALL successfully downloads .tar.gz files in all
488 locales. (reported by Ken Causey)
489 * fixed some bugs revealed by Paul Dietz' test suite:
490 ** INCF, DECF and REMF evaluate their place form as specified in
492 ** FORMATTER expands ~{ ~} iteration directives with V or #
493 parameters correctly.
494 ** FORMATTER deals with the ~@[ ~] conditional directive where the
495 consequent uses no arguments correctly.
496 ** the system has a partial understanding of the (COMPLEX RATIO)
498 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
501 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
502 * new feature: a build-time option (controlled by the :SB-UNICODE
503 keyword feature, enabled by default) for building the system with
504 support for the entire 21-bit character space defined by the
506 * new feature: the system now has rudimentary external-format
507 support; the primary user-visible change at this time is that
508 characters with the high bit set (such as lower-case-e-acute) will
509 print correctly to a terminal in a UTF-8 environment.
510 * minor incompatible change: BASE-CHAR no longer names a class;
511 however, CHARACTER continues to do so, as required by ANSI.
512 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
513 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
514 has been moved to the SB-EXT package (temporarily re-exported from
516 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
517 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
519 * fixed bug #351: better error-handlind and reporting for malformed
521 * fixed bug #350: bignum-printing is now more memory-efficient,
522 allowing printing of very large bignums, eg. (expt 2 10000000).
523 (reported by Bruno Haible)
524 * fixed bug #302: better primitive-type selection for intersection
526 * fixed bug #308: non-graphic characters now all have names, as
527 required. (reported by Bruno Haible)
528 * bug fix: redefining a class with different superclasses now correctly
529 removes it from the direct-subclasses of its previous superclasses.
530 (reported by David Morse)
531 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
532 new value now works. (reported by Bruno Haible)
533 * bug fix: correct canonicalization of multiple non-standard slot
534 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
535 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
536 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
537 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
538 now exists, an signals an error.
539 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
540 during macroexpansion for non-iteration variables as well. (reported
541 by Bruno Haible for CMUCL)
542 * bug fix: Cyclic structures and unprintable objects in compiler
543 messages no longer cause errors. (reported by Bruno Haible)
544 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
545 and READ-FROM-STRING all now return a primary value of NIL if
546 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
547 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
548 (reported by Bruno Haible for CMUCL)
549 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
550 do not designate a condition. (reported by Bruno Haible for
552 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
553 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
554 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
555 permitting resolution in favour of any of the conflicting symbols.
556 (reported by Bruno Haible for CMUCL)
557 * bug fix: EQUAL compiler optimizations is less aggressive on
558 strings which can potentially compare true despite having distinct
559 specialized array element types.
560 * bug fix: unit enumerations can be defined without dividing by
561 zero. (thanks to Vincent Arkesteijn)
562 * FORMAT compile-time argument count checking has been enhanced.
563 (report from Bruno Haible for CMUCL)
564 * a partial workaround for the bug 262: the compiler does not try to
565 inline-expand a local function doing RETURN-FROM from a deleted
566 BLOCK. (thanks to Peter Denno for the bug report and to David
567 Wragg for the simple test case)
568 * fixed some bugs revealed by Paul Dietz' test suite:
569 ** RENAME-PACKAGE allows all package designators as new package
571 ** constraint propagation and lambda variable substitution are
572 more cautious in dealing with partially deleted code.
573 ** compiler sometimes lost reoptimization passes.
574 ** CERROR, given a condition as condition designator, passes its
575 remaining arguments to the continue format control without
577 ** Case-altering FORMAT directives work correctly on non-ASCII
579 ** The REAL type specifier handles bounds outside the floating
580 point ranges without signalling FLOATING-POINT-OVERFLOW.
581 ** Functions with IR1-transformations can create intercomponent
582 references to global functions.
583 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
585 ** FORMAT ~R treats a nil value for its first parameter correctly.
587 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
588 * enhancement: saving cores with foreign code loaded is now
589 supported on x86/NetBSD and sparc/Linux in addition to the previously
591 * bug fix: on some platforms repeated installations caused multiple
592 copies of HTML documentation to be installed -- should not happen
593 any more. (reported by Stefan Scholl)
594 * bug fix: parsing self-recursive alien record types multiple times
595 no longer causes infinite recursion. (reported by Thomas F. Burdick,
596 original patch by Helmut Eller for CMUCL)
597 * bug fix: stack-exhaustion detection works now on NetBSD as well.
598 (thanks to Richard Kreuter)
599 * bug fix: defining classes whose accessors are methods on existing
600 generic functions in other (locked) packages no longer signals
601 bogus package lock violations. (reported by François-René Rideau)
602 * bug fix: special variables as DEFMETHOD parameters no longer have
603 associated bogus type declarations. (reported by David Wragg and
605 * bug fix: read-write consistency on streams of element-type
606 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
607 * bug fix: redefiniton of the only method of a generic function with
608 no DEFGENERIC no longer emits a full WARNING. In addition,
609 redefinition of generic functions with no DEFGENERIC to an
610 incompatible lambda list now signals an error. (thanks to Zach
612 * bug fix: DEFGENERIC now works even when there's a function of the
613 same name in an enclosing lexical environment. (thanks to Zach
615 * fixed compiler failure, caused by instrumenting code during
616 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
617 * optimization: added loop analysis and improved register allocation
618 * fixed some bugs revealed by Paul Dietz' test suite:
619 ** POSITION on displaced vectors with non-zero displacement
620 returns the right answer.
621 ** (SIMPLE-STRING) is a valid type specifier for sequence
623 ** *PRINT-LEVEL* handling for slotless structures is pedantically
625 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
626 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
628 ** The justification version of the FORMAT ~< directive treats
629 non-zero minpad parameter correctly.
631 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
632 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
633 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
634 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
635 the supported interface.
636 * new feature: Single-stepping of code compiled with DEBUG 2 or
637 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
638 * new feature: saving cores with foreign code loaded is now
639 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
640 Timothy Moore's work for CMUCL)
641 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
642 parameters to * instead of NIL if no initform is supplied.
643 (reported by Johan Bockgaard)
644 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
645 correctly when FUNCALL appears as the car of the form. Note:
646 despite this FUNCALL forms are not currently subject to
647 compiler-macro expansion. (port of Raymond Toy's fix for the
648 same from CMUCL, reported by Johan Bockgaard)
649 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
650 (thanks for Teemu Kalvas)
651 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
652 case instead of terminating the iteration (thanks for Julian
653 Squires, Sean Champ and Raymond Toy)
654 * bug fix: incorrect expansion of defgeneric that caused a style
655 warning. (thanks for Zach Beane)
656 * bug fix: slot accessor effective method computation works properly
657 for classes with multiple non-standard applicable methods on
658 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
659 * on x86 compiler supports stack allocation of results of LIST and
660 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
661 CMUCL implementation by Gerd Moellmann)
662 * fixed some bugs revealed by Paul Dietz' test suite:
663 ** FORMAT strings with both the ~<~:;~> form of the justification
664 directive and pretty-printing directives cause an error.
666 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
667 * incompatible change: the internal functions
668 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
669 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
670 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
671 instead of the old functions.
672 * new feature: on platforms where "dladdr" is available foreign
673 function names now appear in backtraces. (based on Helmut Eller's
675 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
676 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
678 * documentation: ASDF manual is now distributed with SBCL.
679 * bug fix: SBCL can now load its contributed modules with REQUIRE
680 even if the system-provided entries have been removed from
681 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
683 * bug fix: backtraces involving undefined functions or assembly
684 routines are more informative. (thanks to Brian Downing)
685 * bug fix: mutually referent alien structures now work correctly.
686 (reported by Rick Taube)
687 * bug fix: structures defined by WITH-ALIEN can be referred to
688 within other definitions in the same WITH-ALIEN.
689 * bug fix: division operators (MOD, TRUNCATE and the like) with
690 constant zero divisors and integer dividends no longer generate
692 * bug fix: provide default methods for INPUT-STREAM-P and
693 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
694 * bug fix: improve the detection and resolution of MOP metacycles
695 (where effective method computation depends on the generic function
696 having its effective method computed). (reported by Bruno Haible)
697 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
698 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
699 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
700 * bug fix: pathnames with relative directory components can be
701 represented relative to default pathnames.
702 * optimization: in taking the GCD of bignums, reduce the two bignums
703 to approximately the same size (using Euclid's algorithm) before
704 applying the more sophisticated binary GCD. (thanks to Juho
706 * optimization: COUNT on bitvectors now operates word-at-a-time.
707 * optimization: ASH with a positive, but not necessarily constant,
708 (leftwards) shift, when in a modular context, is compiled to a
710 * fixed some bugs revealed by Paul Dietz' test suite:
711 ** FORMAT variable parameters ("~V<char>") are defaulted properly
712 if the corresponding argument is NIL.
713 ** FORMAT directives accepting a minpad parameter treat negative
715 ** literal commas as character parameters to FORMAT directives are
717 ** literal spaces directly after ~<Newline> directives within a
718 format-logical-block (~:< ~@:>) do not induce :FILL-style
719 conditional newlines.
720 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
721 as specified: it no longer includes conditional newlines).
722 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
724 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
725 :PER-LINE-PREFIX argument does not evaluate to a string.
727 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
728 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
729 the manual for details; for now, package locks can be disabled by
730 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
731 if no major problems are found then it is likely that they will be
732 compiled in unconditionally.
733 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
734 unsupported operators on all platforms. To load a shared library
735 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
736 object file, link it into a shared library outside of SBCL and
737 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
739 * bug workaround: ROOM T and the GC were not working together
740 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
741 reporting facility aren't preserved. That reporting has been
742 disabled, so now until and unless someone figures out how to make it
743 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
744 * minor incompatible change: as threatened around sbcl-0.8.0, the
745 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
746 The symbols are also exported from SB-PCL for backwards
747 compatibility, but more so than before SB-PCL should be treated as
748 an implementation-internal package.
749 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
751 * the SB-SPROF contrib now works on (most) non-x86 architectures.
752 It is known as of this release not to work on the Alpha, however.
753 * fixed bug #167: errors signalled due to illegal syntax in method
754 bodies are now more legible.
755 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
756 designators and can hence be used with TYPEP.
757 * fixed bug #333: CHECK-TYPE now ensures that the type error
758 signalled, if any, has the right object to be accessed by
759 TYPE-ERROR-DATUM. (reported by Tony Martinez)
760 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
761 5.1.2.3 for multiple-value place subforms. (reported by Kalle
763 * fixed bug #334: programmatic addition of slots using specialized
764 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
765 and :ALLOCATION :CLASS slots.
766 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
767 float exponents. (rereported by Peter Seibel)
768 * fixed a bug: #\Space (and other whitespace characters) are no
769 longer considered to be macro characters in standard syntax by
771 * fixed bug: initialization of condition class metaobjects no longer
772 causes an instance of the condition to be created. (reported by
774 * fixed bug: it is now possible to have slots such that
775 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
776 description is neither :INSTANCE nor :CLASS.
777 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
778 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
779 SLOT-VALUE-USING-CLASS), and no longer causes errors with
780 non-standard SLOT-DEFINITION-ALLOCATION values.
781 * fixed bugs: various race conditions handling exiting threads.
782 CL-PPCRE's thread torture test now passes.
783 * fixed arguably-a-bug: GC time proportional to number of threads in
784 system even when most of them are idle
785 * optimization: improved performance of BIT and SBIT on bit-vectors.
786 * .fasl file incompatibility: The fasl file version number has
787 been incremented because of changes associated with package locks.
789 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
790 * minor incompatible change: the system no longer provides
791 optimization hints (conditions which are TYPEP
792 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
793 mode; these hints are still emitted when higher SPEED optimization
795 * new contrib module: a sampling profiler (profiling by statistical
796 sampling, rather than by instrumenting functions) is available as
797 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
798 * the behaviour of the standard function ED is now customizeable by
799 third parties through a hook variable: see ED's documentation
800 string for information on the protocol.
801 * the compiler no longer emits efficiency notes for (FUNCALL X)
802 when the type of X is uncertain under default optimization
804 * fixed bug 276: mutating a binding of a specialized parameter to a
805 method to something that is not TYPEP the specializer is now
807 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
808 exhibit the required behaviour on the x86 platform. (thanks to
809 Peter van Eynde, Eric Marsden and Bruno Haible)
810 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
811 even for difficult arguments. (reported by Peter Graves)
812 * fixed bug 141a: the backquote printer now descends quoted
814 * fixed another bug in backquote printing: no more destructive
815 modification of the form's list structure. (reported by Brian
817 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
818 move between its address being taken and the call to
819 interrupt_thread, fixing a crashing race condition.
820 * the SB-POSIX contrib implementation has been adjusted so that it
821 no longer exhibits ridiculously poor performance when constructing
822 instances corresponding to C structs.
824 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
825 * minor incompatible change: the sb-grovel contrib now treats C
826 structures as alien (in the sense of SB-ALIEN) objects rather than
827 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
828 has implications for memory management of client code
829 (sb-grovel-returned objects must now be manually managed) and for
830 type safety (alien objects now have full types).
831 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
832 used to control emission of compiler diagnostics, rather than the
833 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
834 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
835 quality should be considered deprecated.
836 * install.sh now installs the user manual as well
837 * (not quite a new documentable feature, but worth considering in
838 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
839 beginnings of a semantically meaningful condition hierarchy is
840 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
842 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
843 designator as the defaults argument.
844 * fixed bug: Displaced arrays whose displaced-to array has become
845 too small now cause ARRAY-DIMENSION to signal an error, providing
846 for safer bounds-checking. (reported by Bruno Haible)
847 * fixed bug: DEFCLASS slot definitions with identical :READER and
848 :WRITER names now signal a reasonable error. (reported by Thomas
850 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
852 * fixed bug: Invalid slot specification errors now print correctly.
853 (thanks to Zach Beane)
854 * fixed bug 320: Shared to local slot value transfers in class
855 redefinitions now happen corrently from superclasses as
856 well. (reported by Bruno Haible)
857 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
859 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
860 improper lists correctly. (reported by Bruno Haible)
861 * fixed bug 313: source-transform for <fun-name> was erroneously
862 applied to a call of a value of a variable with name <fun-name>.
863 (reported by Antonio Menezes Leitao)
864 * fixed bug 307: The obsolete instance protocol ensures that
865 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
866 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
867 remove dead unknown-values globs from the middle of the stack.
868 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
869 easier to resume long computations after using *BREAK-ON-SIGNALS*
870 to diagnose and fix failures. (thanks to Nikodemus Siivola)
871 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
872 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
873 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
874 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
875 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
877 * fixed a (fairly theoretical) bug in string printing: if
878 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
879 does not have array-element-type equal to the most general string
881 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
882 function name. (thanks to Nikodemus Siivola)
883 * fixed bug: compile-time format string checker failed on
884 non-closed ~{. (reported by Thomas F Burdick)
885 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
886 don't warn on legal loop code involving more than one aggregate
887 boolean. (thanks to Nikodemus Siivola)
888 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
889 in keyword position to MAKE-PACKAGE was not being reported as
891 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
892 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
894 * fixed bugs 280 and 312: the checking for multiple definitions in a
895 file is less likely to become confused by uses of inline
897 * fixed bug: the #S reader macro performs the keyword coercion
898 specified for slot names. (reported by Kalle Niemitalo)
899 * fixed bug: lambda lists may contain symbols whose names start with
900 & but are not lambda-list-keywords; their occurrence triggers a
902 * fixed bug 321: define-method-combination argument lambda lists do
903 not cause invalid code to be generated when &optional or &aux
904 variables have default values. (reported by Bruno Haible)
905 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
906 have CLOS classes; this appears also to have fixed reported
907 instability in stack exhaustion detection.
908 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
909 MUFFLE-WARNING when no associated restart is present is now
911 * optimization: rearranged the expansion of various defining macros
912 so that each expands into only one top-level form in a
913 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
915 * optimization: used a previously little-used slot in symbols to
916 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
918 * fixed some bugs revealed by Paul Dietz' test suite:
919 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
921 ** Fixed an optimization bug related to inheritance of initforms
922 from local to shared slots.
923 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
924 ** CAST optimizer forgot to flush argument derived type.
925 ** print/read consistency on floats is now orders of magnitude
926 more likely. (thanks also to Bruno Haible for a similar report
928 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
929 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
930 for objects of type REAL. Make it so.
931 ** SXHASH is specified (infelicitously) to respect similarity,
932 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
933 it so. (thanks to Markus Ziegler)
934 ** on the Alpha, the compiler succeeds in compiling functions
935 returning a known number of arguments greater than 63.
936 ** fixed handling of invalid NIL arguments in keyword position
938 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
940 ** provided a readably-printable representation for RANDOM-STATE
942 ** ensured that pathnames, where they have a namestring, always
943 print using #P"..." syntax.
945 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
946 * Support for the forthcoming 2.0 version of the NetBSD kernel
947 running on x86 hardware has been added. (thanks to Perry
948 E. Metzger most immediately, and others for their past work)
949 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
950 current release version; SBCL's OpenBSD support had been broken
951 since about the time of OpenBSD's switch to ELF binary format.)
952 * [placeholder for DX summary]
953 ** user code with &REST lists declared dynamic-extent, under high
954 speed or space and low safety and debug optimization policy.
955 * The manual has been converted to Texinfo format and the debugger
956 chapter from the cmucl manual has been added.
957 * A facility has been added to extract documentation strings from
958 sbcl and store them as Texinfo-formatted snippets for inclusion in
959 the manual (via Texinfo's @include directive)
960 * bug fix: compiler emitted division in optimized DEREF. (thanks for
961 the test case to Dave Roberts)
962 * bug fix: multidimensional simple arrays loaded from FASLs had fill
963 pointers. (reported by Sean Ross)
964 * bug fix: PROFILE output is printed nicely even for large numerical
965 values. (thanks to Zach Beane)
966 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
967 greater than 32 handle EOF correctly.
968 * bug fix: on X86 an immediate argument of the IMUL instruction is
969 correctly printed in disassembly. (thanks to Lutz Euler)
970 * bug fix: class slots in redefined classes preserve their old
971 values. (thanks to Bruno Haible and Nikodemus Siivola)
972 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
973 succeeds. (reported by Marco Baringer)
974 * fixed some bugs revealed by Paul Dietz' test suite:
975 ** READ-SEQUENCE now works on ECHO-STREAMs.
976 ** RATIONALIZE works more according to its specification. (thanks
979 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
980 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
981 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
982 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
983 should matter to you only if you rebind the printer control
984 variables and then find you want different bindings in the
985 debugger than in the ordinary execution of your program.)
986 * The runtime build system has been tweaked to support building
987 (on SPARC/SunOS) using a C compiler which invokes Sun's own
988 assembler and linker. (thanks to Nikodemus Siivola)
989 * Unbound, undefined, undeclared variables now trigger full
990 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
991 more often programmer error than deliberate exploitation of undefined
993 * optimization: the hash algorithm for strings has changed to one
994 that is less vulnerable to spurious collisions. (thanks to Juho
996 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
997 needless bounds checking. (thanks to Juho Snellman)
998 * optimization: implemented multiplication as a modular
999 (UNSIGNED-BYTE 32) operation on the PPC backend.
1000 * fixed some bugs revealed by Paul Dietz' test suite:
1001 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1003 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1004 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1005 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1007 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1009 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1011 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1012 their output stream on EOF from read.
1013 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1014 have been read to end-of-file.
1015 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1017 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1018 description of determination of which consecutive characters
1020 ** Printing the "Space" character with escaping on now yields "#\\ ",
1021 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1022 ** Reading floating-point numbers with *READ-BASE* set to a number
1023 less than 10 works correctly.
1024 ** Reading floating-point numbers with *READ-BASE* set to a number
1025 more than 10 works correctly.
1026 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1027 the readtable currently in effect.
1029 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1030 * minor incompatible change: parsing of namestrings on a physical
1031 (Unix) host has changed; numbers after the final #\. in a
1032 namestring are no longer interpreted as a version field. This is
1033 intented to be largely invisible to the user, except that the
1034 meaning of the namestring "*.*.*" has changed: it now refers to a
1035 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1036 should usually be replaced by
1037 (make-pathname :name :wild :type :wild :version :wild)
1038 with the added benefit that this is more likely to be portable.
1039 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1040 option to OPEN now signals an error if the file being opened
1041 exists; this may have an impact on existing code.
1042 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1043 signals received, on the PowerPC platforms (both Linux and
1044 Darwin). (thanks to Pierre Mai for pointing out the location of
1046 * several fixes on OS X: The system now builds and runs cleanly on
1047 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1048 (thanks to Brian Mastenbrook)
1049 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1050 second-resolution: integer multiples of 1/3600 between -24 and 24.
1051 (thanks to Vincent Arkesteijn)
1052 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1053 type when called with 1 argument; PEEK-CHAR checked type of
1054 PEEK-TYPE only after having read first character from a
1055 stream. (reported by Peter Graves)
1056 * bug fix: the garbage collector now has much better locality
1057 behaviour, and in particular no longer treats all memory as being
1058 exhausted when many small objects point to each other in a deeply
1060 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1061 recognized as being TYPEP their class.
1062 * bug fix: the PUSHNEW documentation string has been corrected.
1063 (thanks to Vincent Arkesteijn)
1064 * bug fix: defaulting of the value for the last of an atypically
1065 large number of multiple values being bound was not being
1066 performed correctly on the Alpha or PPC platforms
1067 * optimization: implemented multiplication as a modular
1068 (UNSIGNED-BYTE 32) operation on the x86 backend.
1069 * optimization: SEARCH on simple-base-strings can now be open-coded.
1070 (see also contrib/compiler-extras.lisp for inspiration for
1071 teaching the compiler about the Boyer-Moore algorithm).
1072 * value, returned by MAX (and MIN) called with several EQUALP, but
1073 not EQL, arguments now does not depend on compiler settings.
1074 * fixed some bugs revealed by Paul Dietz' test suite:
1075 ** in stack analysis liveness information is propagated from
1076 non-local entry points.
1077 ** pathwise CAST removing failed when the CAST node did not start
1079 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1080 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1082 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1083 host is already defined.
1084 ** RENAME-FILE works on streams instead of signalling an internal
1086 ** PEEK-CHAR uses the current readtable when determining whether
1087 or not a character is whitespace.
1088 ** MERGE-PATHNAMES handles the case when the pathname does not
1089 specify a name while the default-pathname specifies a version.
1090 ** Pathnames now stand a better chance of respecting print/read
1092 ** Attempting to use standardized file system operators with a
1093 pathname with invalid :DIRECTORY components signals a
1095 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1097 ** DIRECTORY on logical pathnames is more correct.
1098 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1099 signal a TYPE-ERROR if their argument is not a stream.
1100 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1101 designator argument does not designate a stream.
1102 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1103 examining the synonym.
1104 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1106 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1107 element-type larger than ([UN]SIGNED-BYTE 32).
1109 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1110 * When built with the :SB-FUTEX feature, threaded builds now take
1111 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1112 for faster/more reliable mutex and condition variable support.
1113 * Incompatible change (but one you probably shouldn't have been using
1114 anyway): the interface and code for arbitrating between multiple
1115 threads in the same user session has been redesigned.
1116 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1117 error when called without an explicit environment argument.
1118 (thanks to Nikodemus Siivola)
1119 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1120 confused about their position. (thanks to Adam Warner and Gerd
1122 * bug fix: Pretty printing backquoted forms with unquotations in the
1123 argument list position of various code constructs such as LAMBDA
1124 now works correctly. (reported by Paul Dietz)
1125 * bug fix: Pretty printing unquotations no longer loses all
1126 stream position information.
1127 * optimization: performance of string output streams is now less
1128 poor for multiple small sequence writes.
1129 * optimization: performance of CSUBTYPEP in the presence of complex
1130 expressions involving CONS and NOT many times has been improved.
1131 (reported by Paul Dietz)
1132 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1134 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1135 streams for the REPL, for the debugger, and so on. (thanks to
1137 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1138 * fixed some bugs revealed by Paul Dietz' test suite:
1139 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1140 is ignored if it is too small, rather than propagating through
1141 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1142 ** extremely complex negations of CONS types were not being
1143 sufficiently canonicalized, leading to inconsistencies in
1145 ** VALUES tranformer lost derived type.
1147 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1148 * fixed a bootstrapping bug: the build process no longer assumes
1149 that the various BOOLE-related constants have the same value in
1150 host and target lisps. (noted by Paul Dietz' test suite on an
1151 SBCL binary built from CLISP)
1152 * The system can now be dynamically linked on the MIPS platform,
1153 which enables dynamic loading of foreign code from Lisp. (thanks
1154 to Ralf Baechle for discussions on the MIPS ABI)
1155 * The system now records debugging information for its own source
1156 files in a filesystem-position-independent manner, relative to
1157 the "SYS" logical host.
1158 * fixed a compiler bug: MV-LET convertion did not check references
1159 to the "max args" entry point. (reported by Brian Downing)
1160 * tweaked disassembly notes to be less confident about proclaiming
1161 some instruction as an LRA. (thanks to Brian Downing)
1162 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1163 now each have their own history, command character, and other
1164 characteristics. (thanks to David Lichteblau)
1165 * fixed some bugs revealed by Paul Dietz' test suite:
1166 ** compiler failure in compiling LOGAND expressions including a
1168 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1169 shift greater than 32.
1170 ** FLUSH-DEST did not mark blocks for type check regeneration.
1171 ** HANDLER-CASE failed to accept declarations in handler clauses
1172 in some circumstances.
1174 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1175 * New code in contrib/sb-introspect (still probably not entirely
1176 stable yet) provides some support for smart Lisp development
1177 environments like SLIME.
1178 * The conditions signalled for errors occurring when loading .fasl
1179 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1180 in a way which should help ASDF recover gracefully.
1181 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1182 stuff has been cleaned up. If you code contrib/ stuff, this might
1183 affect you, and you can look at contrib/README, contrib/STANDARDS,
1184 and/or the 0.8.4.27 diff to check.
1185 * In full calls the compiler now does not generate checks for declared
1186 argument types for all arguments.
1187 * various threading fixes
1188 ** and some experimental patches which didn't make it into
1189 the main tree for this release, but which are shipped in
1190 contrib/experimental-thread.patch as a possible fix for some
1191 failures (deadlock, spinning...) in GC-intensive multithreaded
1193 * fixed PPC build problem (source code incompatibility of different
1194 library versions): added offsetof() hackery which attempts to divine
1195 where glibc maintainers put uc_mcontext today
1196 * fixed bug 282: compiler does not trust type assertions while passing
1197 arguments to a full call.
1198 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1199 &OPTIONAL VALUES type parameter.
1200 * fix bug 214: algorithm for noting rejected templates is now more
1201 similar to that of template seletion. (also reported by rydis on
1203 * fixed bug 141b: printing backquoted information readably and prettily
1204 inserts a space where necessary.
1205 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1206 (CHARACTER 10) are now reported as errors, rather than propagated
1207 as unknown types. (reported by piso on #lisp)
1208 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1209 with values NIL and :ERROR. (thanks to Milan Zamazal)
1210 * fixed bug 191c: CLOS now does proper keyword argument checking as
1211 described in CLHS 7.6.5 and 7.6.5.1.
1212 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1213 longer raise an error; further, using a list as a for-as-arithmetic
1214 counter now raises a meaningful error.
1215 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1216 now understood by sequence creation functions such as MAKE-SEQUENCE
1218 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1219 a STRING-INPUT-STREAM.
1220 * compiler enhancement: SIGNUM is now better able to derive the type
1222 * type declarations inside WITH-SLOTS are checked. (reported by
1224 * fixed some bugs revealed by Paul Dietz' test suite:
1225 ** incorrect optimization of TRUNCATE for a positive first
1226 argument and negative second.
1227 ** compiler failure in let-convertion during flushing dead code.
1228 ** compiler failure while deriving type of TRUNCATE on an
1229 interval, containing 0.
1230 ** ASH of a negative bignum by a negative bignum count now returns
1232 ** intersection of CONS types now canonicalizes properly, fixing
1233 inconsistencies in SUBTYPEP.
1235 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1236 * incompatible change: The --disable-debugger command line
1237 option now clobbers the debugger at a more fundamental
1238 level, by redefining #'INVOKE-DEBUGGER instead of by
1239 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1240 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1241 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1242 enter the debugger REPL and then suffer recursive errors
1243 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1244 while under the new system, BREAK in --disable-debugger mode
1245 terminates the system just as an unhandled error would.
1246 * fixed compiler performance when processing loops with a step >1;
1247 * bug fix: DOCUMENTATION now retrieves generic function
1248 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1249 support has been systematized, and now supports the methods
1250 specified by ANSI, along with a default method and a method for
1251 slot documentation. (reported by Nathan Froyd)
1252 * bug fix: effective methods associated with a generic function are
1253 no longer cached over a change of that generic function's method
1254 combination. (reported by Andreas Fuchs)
1255 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1256 names a non-existent directory. (thanks to Andreas Fuchs)
1257 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1258 the PPC platform, lead to stack corruption; this has been fixed.
1259 (reported by Rainer Joswig)
1260 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1261 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1262 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1263 arithmetic in general, is now much more reliable on the PPC
1265 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1266 platform now returns the right answer.
1267 * optimization: restored some effective method precomputation in
1268 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1269 precomputation is now tunable.
1270 * optimization: compiler-internal data structure use has been
1271 reviewed, and changes have been made that should improve the
1272 performance of the compiler by about 20%.
1273 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1274 simple-base-strings and simple-bit-vectors is improved.
1275 * optimization: the optimization of 32-bit logical and arithmetic
1276 functions introduced in version 0.8.3 on the x86 has been
1277 implemented on the mips, ppc and sparc platforms; an
1278 implementation of the same facility, but for 64-bit arithmetic,
1279 has been added for the alpha.
1280 * microoptimization: the compiler is better able to make use of the
1281 x86 LEA instruction for multiplication by constants.
1282 * bug fix: in some situations compiler did not report usage of
1283 generic arithmetic in (SPEED 3) policy.
1284 * bug 145b fix: compiler used wrong type specifier while converting
1285 MEMBER-types to numeric.
1286 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1288 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1289 index argument now works properly on the Alpha platform.
1290 * bug fix: floating point exception treatment on the Alpha platform
1292 * bug fix: FILE-POSITION works much better on string input and
1293 output streams. (thanks to Nikodemus Siivola)
1294 * bug fix: many threading/garbage collection symptoms sorted.
1295 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1296 might be pseudo-atomic.
1297 * internal change: Stopping for GC is now done with signals not
1298 ptrace. GC is now done in whichever thread wanted it, instead of
1300 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1302 * bug fix: result form in DO is not contained in the implicit
1304 * incompatible change: ICR structure is changed; the value part of
1305 CONTINUATION is now called LVAR; corresponding functions are
1306 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1307 * added type deriver for ISQRT (thanks to Robert E. Brown).
1308 * bug fix: better support for loading from the command line when an
1309 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1311 * fixed some bugs revealed by Paul Dietz' test suite:
1312 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1313 ** ROUND and FROUND now give the right answer when given very
1314 small float arguments.
1315 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1317 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1318 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1319 ** LCM should return a non-negative integer.
1320 ** PARSE-INTEGER returned the index of a terminator instead of the
1321 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1322 ** PARSE-INTEGER returned an incorrect index being applied to a
1324 ** LCM with two arguments of 0 returns 0 rather than signalling
1326 ** unsigned addition of a 32-bit constant with the high bit set no
1327 longer causes an internal compiler error on the x86.
1328 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1329 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1330 with negative last argument.
1331 ** byte specifiers with zero size and position no longer cause
1332 an error during type derivation.
1333 ** bignum multiplication on the Alpha platform now returns the
1335 * porting: The system now builds on SuSE AMD64, although it still
1336 generates a 32-bit binary.
1337 * .fasl file incompatibility: The fasl file version number has
1338 been incremented (because of the changes to internal compiler
1339 data structures referred to above).
1341 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1342 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1343 more accurately, on the Darwin kernel running on PowerPC hardware.
1344 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1345 * Compiler code deletion notes now signal a condition of type
1346 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1347 an associated MUFFLE-WARNING restart.
1348 * The compiler now performs limited argument count validation of
1349 constant format strings in FORMAT, and where appropriate in ERROR,
1350 CERROR and WARN. (thanks to Gerd Moellmann)
1351 * New ASDF-INSTALL contrib can be used for automatic download and
1352 installation of third-party Lisp code from CCLAN or other sites
1354 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1355 which forces another thread to execute a function supplied by the
1357 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1358 now accept and act upon their :ELEMENT-TYPE keyword argument.
1359 (reported by Martin Atzmueller, Edi Weitz)
1360 * bug fix: FILE-POSITION now accepts position designators up to
1361 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1362 is the greater. (thanks to Patrik Nordebo)
1363 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1364 Kalle Olavi Niemitalo)
1365 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1366 printable. (reported by Eric Marsden)
1367 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1368 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1369 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1370 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1371 (thanks to Stig Sandoe)
1372 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1373 UNREAD-CHAR now correctly includes the unread character in the
1374 target sequence. (thanks to Gerd Moellmann)
1375 * bug fix in threaded builds: the system can now be suspended and
1376 resumed by shell job control with minimal disruption.
1377 * bug fixes in times and timezones >2038AD
1378 * better handling of "where is GNU make?" problem in build scripts
1379 (thanks to Nikodemus Siivola)
1380 * new optimization: inside a named function any reference to a
1381 function with the same name is considered to be a self-reference;
1382 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1383 optimization quality.
1384 * new optimization on x86: logical functions and + now have
1385 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1386 used when the result is truncated to 32 bits.
1387 * VALUES declaration is partially enabled.
1388 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1389 * fixed some bugs revealed by Paul Dietz' test suite:
1390 ** The system now obeys the constraint imposed by
1391 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1392 types form a lattice under type intersection.
1393 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1394 ** ASSOC now ignores NIL elements in an alist.
1395 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1396 and (1+ MOST-POSITIVE-FIXNUM) answers.
1397 ** The addition of a method with invalid qualifiers to a generic
1398 function does not cause an error to be signalled immediately;
1399 a warning is signalled, and the error is generated only on
1400 calling the generic function.
1401 * changed .fasl file version number, in part to add type codes for
1402 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1403 obscure ANSI requirements
1405 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1406 * fixed bug 148: failure to inline-expand a local function left
1407 garbage, confusing the compiler.
1408 * fixed bugs 3cd: structure slot readers perform type check if the
1409 slot can have an invalid value (i.e. it is either not initialized
1410 or can be written with a less specific slot writer).
1411 * bug fix: the compiler now traps array references to elements off
1412 the end of an array; previously, the bounds checking in some
1413 circumstances could go off-by-one.
1414 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1416 * type declarations for array element types now obey the description
1417 on the CLHS page "Declaration TYPE", as per discussions on
1418 sbcl-help around 2003-05-08. This means that a declaration
1419 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1420 declaration, all references to BAR will be asserted or assumed
1421 (with THE, so dependent on compiler policy) to involve objects of
1422 type FOO. Note that no such declaration is implied in
1423 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1424 * declared types of functions from the "Conditions"
1425 chapter. (reported by Paul Dietz)
1426 * bug fix: CERROR accepts a function as its first argument.
1427 * bug fix: NTH an NTHCDR accept a bignum as index
1428 arguments. (reported by Adam Warner)
1429 * optimization: character compare routines now optimize comparing
1430 against a constant character. (reported by Gilbert Baumann)
1431 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1432 argument now works properly on the MIPS platform.
1433 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1434 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1435 declared to have a functional type, does not cause an error
1437 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1438 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1439 * fixed bug: if last continuation of a deleted block has a
1440 destination, this destination should be deleted too. (reported by
1442 * fixed a bug in the bootstrap process: the host compiler's values
1443 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1444 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1445 test case from Patrik Nordebo)
1446 * improved the ability of the disassembler on the PPC platform to
1447 provide helpful disassembly notes.
1448 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1449 the class in more cases than previously.
1450 * bug fix: FILE-POSITION now understands :START and :END for
1451 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1452 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1453 8) data. (thanks to David Lichteblau)
1454 * bug fix: it is possible to add a method to a generic function
1455 without lambda list.
1456 * bug fix: reader failed to signal END-OF-FILE inside an
1457 object representation. (reported by Nikodemus Siivola)
1458 * fixed some bugs revealed by Paul Dietz' test suite:
1459 ** LAST and [N]BUTLAST should accept a bignum.
1460 ** condition slot accessors are methods.
1461 ** (VECTOR NIL) is a subtype of STRING.
1463 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1464 * minor incompatible change: some nonsensical specialized lambda
1465 lists (used in DEFMETHOD) which were previously ignored now signal
1467 * minor incompatible change: the system is now aware of the types of
1468 variables in the COMMON-LISP package, and will signal errors for
1469 most violations of these type constraints (where previously they
1470 were silently accepted).
1471 * minor incompatible change: COMPILE-FILE now uses the freedom
1472 afforded (ANSI 3.2.2.3) to use derived function types for
1473 functions defined in the same file. This also permits the system
1474 to warn on static type mismatches and function
1475 redefinition. (Currently it does not work with high DEBUG level.)
1476 * minor incompatible change: VALUES declaration is disabled.
1477 * When issuing notes, the compiler now signals a condition of type
1478 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1479 restart for use in user handlers. It is expected that the
1480 COMPILER-NOTE condition will eventually become a condition
1481 supertype to a hierarchy of note types, which will then be
1482 handleable in a similar fashion. However, at the moment, no such
1483 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1484 but it's an implementation detail, not a classification for the
1486 * Changes in type checking closed the following bugs:
1487 ** type checking of unused values (192b, 194d, 203);
1488 ** template selection based on unsafe type assertions (192c, 236);
1489 ** type checking in branches (194bc).
1490 * A short form of VALUES type specifier has ANSI meaning (it has
1491 increased the number of situations when SBCL cannot perform type
1493 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1494 keywords or constants is permissible.
1495 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1496 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1497 classes. (thanks to Antonio Martinez)
1498 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1499 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1500 argument to a pretty-print stream. Instead, it leaves any such
1501 operations to DESCRIBE-OBJECT methods.
1502 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1504 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1505 lambda lists. (thanks to David Lichteblau)
1506 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1507 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1508 (thanks to Gerd Moellmann)
1509 * fixed bug 246: increased compilation speed of long
1510 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1512 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1514 * DEFCONSTANT now throws a condition of type
1515 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1516 constant to a non-EQL value; CONTINUE and ABORT restarts
1517 respectively change and preserve the value.
1518 * fixed bug 63: The code walker, part of the implementation of CLOS,
1519 is now better at handling symbol macros.
1520 * bug fix: There is no longer an internal implementation type named
1521 CL:LENGTH. (reported by Raymond Toy)
1522 * bug fix: In macro-like defining macros/special operators the
1523 implicit block does not enclose the lambda list.
1524 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1525 enclosed in parentheses) are not suitable as type specifiers, and
1526 their use properly signals an error now.
1527 * bug fix: An argument count mismatch for a type specifier in code
1528 being compiled no longer causes an unhandled error at compile
1529 time, but signals a compile-time warning.
1530 * fixed simple vector readable printing
1531 * bug fix: DESCRIBE takes more care over whether the class
1532 precedence list slot of a class is bound before accessing it.
1533 (reported by Markus Krummenacker)
1534 * bug fix: FORMATTER can successfully compile pretty-printer format
1535 strings which use variants of the ~* directive inside.
1536 * bug fix: SEARCH now applies its TEST predicate to the elements of
1537 the arguments in the correct order. (thanks to Wolfhard Buss)
1538 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1539 in type inference. (thanks to Robert E. Brown)
1540 * bug fix: Reading in symbols with an explicit package name of ""
1541 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1542 * fixed some bugs revealed by Paul Dietz' test suite:
1543 ** NIL is now allowed as a structure slot name.
1544 ** Arbitrary numbers, not just REALs, are allowed in certain
1545 circumstances in LOOP for-as-arithmetic clauses.
1546 ** Multiple class redefinitions before slot access no longer
1547 causes a type error.
1548 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1549 association between the name and a class.
1550 ** Generic functions with non-standard method-combination and over
1551 five methods all of which return constants no longer return NIL
1552 after the first few invocations. (thanks to Gerd Moellmann)
1553 ** CALL-NEXT-METHOD with no arguments now passes the original
1554 values of the arguments, even in the presence of assignment.
1555 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1557 ** DISASSEMBLE works with closures and funcallable instances.
1558 ** ADD-METHOD now returns the generic function, not the new method.
1559 ** FIND-METHOD signals an error if the lengths of the specializers
1560 is incompatible with the generic function, even if the ERRORP
1562 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1563 which its argument is a member.
1564 ** DEFCLASS only redefines the class named by its class-name
1565 argument if that name is the proper name of the class;
1566 otherwise, it creates a new class.
1567 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1568 of the UNBOUND-SLOT condition to the name of the slot.
1569 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1570 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1571 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1572 SLOT-MAKUNBOUND in the specified fashion.
1574 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1575 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1576 cross-compilation host. As a consequence, we can now bootstrap our
1577 way up to SBCL starting with a bare gcc toolchain and human-readable
1578 source code (first the source to CLISP, then the source to SBCL).
1579 * A contributed module containing a partial implementation of the
1580 simple-streams interface has been included. (thanks to Rudi
1582 * A contributed module implementing the RFC1321 Message Digest
1583 Algorithm, known as MD5, has been included.
1584 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1585 no longer has any effect, as the code controlled by this feature
1586 has been deleted. (As far as we know, no-one has ever built using
1587 this feature, and its semantics were confused in any case).
1588 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1589 work on conditions (as required by the ANSI specification),
1590 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1591 expected behaviour on conditions. Users should note, however,
1592 that such behaviour is not required by the ANSI specification,
1593 and so use of this behaviour may render their code unportable.
1594 * fixed some bugs revealed by Paul Dietz' test suite:
1595 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1597 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1598 ** SXHASH on condition objects no longer returns NIL.
1599 ** :ALLOCATION :CLASS slots are better treated; their values are
1600 updated on class redefinition, and initforms inherited from
1601 superclasses are applied.
1602 ** REMOVE-METHOD returns its generic function argument even when
1603 no method was removed.
1604 ** SHARED-INITIALIZE now initializes the values of the requested
1605 slots, including those with :ALLOCATION :CLASS.
1606 ** ALLOCATE-INSTANCE now works on structure classes defined via
1607 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1609 ** SLOT-EXISTS-P now works on conditions, as well as structures
1611 ** MAKE-LOAD-FORM now has the required methods on
1612 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1613 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1614 keyword, and now implements the SLOT-NAMES argument.
1615 ** methods with &OPTIONAL arguments no longer allow too many
1616 arguments to be passed in the call without error.
1617 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1618 option is consistent with the required arguments of the generic
1619 function lambda list.
1620 * bug fix: REQUIRE accepts a string designator. (Thanks to
1622 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1623 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1624 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1625 * bug fix: The compiler now checks for duplicated variables in macro
1627 * bug fix: SETQ on globals returns the correct value.
1628 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1629 not a COMPILER-ERROR (followed by some other strange error on
1630 choosing the CONTINUE restart).
1631 * bug fix: make.sh and friends are now more consistent in the way that
1632 they look for GNU "make".
1634 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1635 * experimental native threads support (on x86 Linux >=2.4 only).
1636 This is not compiled in by default: you need to add :SB-THREAD to
1637 the target features. See the "Beyond ANSI" chapter of the manual
1639 * fix for longstanding nonANSIism: The old distinction between
1640 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1641 The return value from CL:FIND-CLASS is now a CLOS class, and
1642 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1643 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1644 * An interface to the MetaObject Protocol, as described in Kiczales,
1645 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1646 MIT Press, 1991, is available from the SB-MOP package.
1647 * incompatible change: the SB-PCL package should now be considered
1648 a private implementation detail, and no longer a semi-private MOP
1650 * minor incompatible change: due to rearrangement for threads, the
1651 control stack and binding stack are now allocated at arbitrary
1652 addresses instead of being hardcoded per-port. Users affected by
1653 this probably have to be doing advanced things with shared
1654 libraries, and will know who they are.
1655 * minor incompatible change: Previously, all --eval forms used were
1656 processed with READ before any of them were processed with EVAL.
1657 Now each --eval form is processed with both READ and EVAL before
1658 the next --eval form is processed. (Thus package operations like
1659 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1660 work as the user might reasonably expect.)
1661 * minor incompatible change: *STANDARD-INPUT* is now only an
1662 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1664 * minor incompatible change: Y-OR-N-P is now character-oriented,
1665 not line oriented. Also, YES-OR-NO-P now works without errors.
1666 (thanks to Antonio Martinez)
1667 * sb-aclrepl module improvements: an integrated inspector, added
1668 repl features, and a bug fix to :trace command.
1669 * Known functions, which cannot be open coded by the backend, are
1670 considered to be able to check types of their arguments. (fixing
1671 a bug report by Nathan J. Froyd)
1672 * fixed a bug in computing method discriminating functions: It is
1673 now possible to define methods specialized on classes which have
1674 forward-referenced superclasses. (thanks to Gerd Moellmann)
1675 * fixed evaluation order in optional entries (reported by Gilbert
1677 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1678 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1679 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1680 required-by-AMOP NAME argument, as well as CLASS and
1681 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1682 * fixed bug 20: DEFMETHOD can define methods using names that are
1683 not the proper names of classes to designate class specializers.
1684 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1685 Unix file descriptors, instead of blowing up. (thanks to Antonio
1687 * Garbage collection refactoring: user-visible change is that a
1688 call to the GC function during WITHOUT-GCING will not do garbage
1689 collection until the end of the WITHOUT-GCING. If you were doing
1690 this you were probably losing anyway.
1691 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1692 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1693 TYPEP the latter but not the former.
1694 * The compiler issues a full WARNING for calls to undefined functions
1695 with names from the CL package.
1696 * MAP-INTO for a vector destination is open coded. (reported by
1697 Brian Downing on c.l.l)
1698 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1699 documentation string.
1700 * fixed some bugs revealed by Paul Dietz' test suite:
1701 ** COPY-ALIST now signals an error if its argument is a dotted
1703 ** Condition slots are now accessed more correctly in the presence
1704 of multiple initargs for a given slot.
1705 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1706 exclude restarts of the same name associated with a different
1708 ** DEFCLASS of forward-referenced classes with another
1709 forward-referenced class in the superclasses list no longer
1711 ** Condition slots are now initialized once each, not multiple
1712 times. (thanks to Gerd Moellmann)
1713 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1715 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1716 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1717 arguments contain duplicated elements.
1718 ** RESTART-CASE understands local macros.
1719 ** RESTART-CASE associates exactly its own restarts with a condition.
1720 ** ENDP in safe mode checks its argument to be of type LIST.
1721 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1722 in question is unbound.
1723 ** Optimized MAKE-INSTANCE functions no longer cause internal
1724 assertion failures in the presence of duplicate initargs.
1725 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1726 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1727 propagated even in the ctor optimized implementation of
1729 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1731 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1732 * a better implementation of SXHASH on (simple) bit vectors,
1733 measured both in execution speed and in distribution of results
1734 over the positive fixnums, has been installed. Likewise, a better
1735 implementation of EQUAL for simple bit vectors is now available.
1736 * fixed CEILING optimization for a divisor of form 2^k.
1737 * fixed bug 240 (emitting extra style warnings "using the lexical
1738 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1739 by Antonio Martinez)
1740 * fixed SXHASH, giving different results for NIL depending on type
1741 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1742 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1743 variable. (found by Rolf Wester)
1744 * SBCL does not ignore type declarations for special
1745 variables. (reported by rif on c.l.l 2003-03-05)
1746 * some bug fixes in contrib/sb-aclrepl/
1747 * fixed some bugs revealed by Paul Dietz' test suite:
1748 ** a bug in the CONS type specifier, whereby the CAR and CDR
1749 types got intertwined, has been fixed;
1750 ** the type system is now able to reason about the interaction
1751 between INTEGER and RATIO types more completely;
1752 ** APPEND, [N]REVERSE and NRECONC check that those their
1753 arguments, which must be proper lists, are really so;
1754 ** An array specialized to be unable to hold elements has been
1755 implemented, as required -- yes, really -- by ANSI;
1756 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1757 on malformed property lists;
1759 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1760 * incompatible packaging change: in line with Unix convention,
1761 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1762 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1763 * REQUIRE and PROVIDE are now optionally capable of doing something
1764 useful. See the documentation string for REQUIRE.
1765 * infrastructure for a managed SBCL contrib system: contributed
1766 modules in this release include:
1767 ** the ASDF system definition facility;
1768 ** an interface to the BSD Sockets API;
1769 ** an ACL-like convenience interface to the repl;
1770 (thanks to Kevin Rosenberg)
1771 ** an implementation of ROTATE-BYTE, with efficient implementation
1773 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1774 gives a closer approximation to the right answer than previously.
1775 (thanks to Raymond Toy)
1776 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1777 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1778 optional environment arguments, as required by ANSI.
1779 * fixed bugs in other functions taking environment objects, allowing
1780 calls with an explicit NIL environment argument to be compiled
1782 * fixed bug 228: primary return values from
1783 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1784 COMPILE or FUNCTION.
1785 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1786 :TYPE will no longer signal errors on innocuous objects.
1787 * fixed bug 231b: SETQ is better at respecting type declarations in
1788 the lexical environment.
1789 * fixed a bug in DEFCLASS: classes named by symbols with no or
1790 unprintable packages can now be defined.
1791 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1792 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1793 * fixed compiler failure related to checking types of functions.
1794 (reported by Robert E. Brown)
1795 * the compiler is now much more consistent in its error-checking
1796 treatment of bounding index arguments to sequence functions: in
1797 (SAFETY 3) code, errors will be signalled in almost all cases if
1798 invalid sequence bounding indices are passed to functions defined
1799 by ANSI to operate on sequences.
1800 * fixed a bug in the build procedure: documentation of SBCL-specific
1801 packages is now preserved and available in the final Lisp image.
1802 * lifted FDEFINITION lookup out of loops in the implementation of
1803 many list operations. (thanks to Robert E. Brown)
1804 * fixed a bug in the reader: the #n# reader macro now works for
1805 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1806 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1807 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1808 E. Brown and Tony Martinez respectively)
1809 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1810 SLOT-BOUNDP: in particular, it is now able to optimize them much
1811 better, and is now not vulnerable to having packages renamed.
1812 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1813 always called when a slot is not present in an instance. (thanks
1815 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1816 longer signal an error on unreading a character following EOF on
1817 the previous constituent stream. (thanks to Tony Martinez)
1818 * fixed some bugs revealed by Paul Dietz' test suite:
1819 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1820 not just nonnegative fixnums;
1821 ** the logical bit-array operators such as BIT-AND now accept an
1822 explicit NIL for their "opt-arg" argument (to indicate a
1823 freshly-consed result bit-array);
1824 ** ELT now signals an error on an invalid sequence index in safe
1826 ** the type system is now cleverer about negations of numeric
1827 types, and consequently understands the BIGNUM and RATIO types
1829 ** the type system is now cleverer about the interaction between
1830 INTEGER and RATIO types: while bugs still remain, many more
1831 cases are accurately computed;
1832 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1833 if it is in the last clause;
1834 ** CONSTANTLY now correctly returns a side-effect-free function in
1836 ** DECLARE is no longer treated as a special-operator; in
1837 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1838 * incremented fasl file version number due to the change in the
1839 DEFSTRUCT-SLOT-DESCRIPTION structure.
1841 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1842 * minor incompatible change: code processed by the "interpreter" or
1843 EVAL now has a compilation optimization policy of (DEBUG 2)
1844 (changed from (DEBUG 1)) to improve debuggability of interactive
1845 development, and to allow the use of the debug RETURN command in
1847 * an experimental implementation of the RETURN command for the
1848 debugger has been included. (thanks to Frederik Kuivinen)
1849 * fixed bug 62: constraints were not propagated into a loop.
1850 * fixed bug in embedded calls of SORT (reported and investigated by
1852 * fixed some bugs revealed by Paul Dietz' test suite:
1853 ** printing and reading of arrays with some dimensions having
1854 length 0 (thanks to Gerd Moellmann);
1855 ** BOA constructor with &AUX argument without a default value does
1856 not cause a type error;
1857 ** CONSTANTP now returns true for all self-evaluating objects.
1859 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1860 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1861 accessors that are related by inheritance, as specified in the
1862 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1863 Valtteri Vuorikoski)
1864 * The compiler is now able to inline functions that were defined in
1865 a complex lexical environment (e.g. inside a MACROLET).
1866 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1868 * Support for the upcoming FreeBSD-5.0 release has been included.
1869 (thanks to Dag-Erling Smorgrav)
1870 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1871 effect when it is not in a toplevel context.
1872 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1873 stand a better chance of being correct. (thanks to Gerd
1875 * fixed bug in COERCE, which now signals an error on coercing a
1876 rational to a bounded real type which excludes the expected
1878 * The compiler is now able to derive types more accurately from the
1879 COERCE and COMPILE functions.
1880 * fixed bug 223: functional binding is considered to be constant
1881 only for symbols in the CL package.
1882 * fixed bug 231: SETQ did not check the type of a variable being set
1883 (reported by Robert E. Brown)
1884 * A new optimization for MAKE-INSTANCE has been included, fixing
1885 various bugs (including relating to :ALLOCATION :CLASS slots and
1886 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1888 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1889 ** As required by ANSI, LOOP now disallows anonymous collection
1890 clauses such as COLLECT I in conjunction with aggregate boolean
1891 clauses such as THEREIS (= I 1);
1892 ** LOOP now signals an error when any variable is reused in the
1893 same loop (including the potentially useful construct analogous
1894 to WITH A = 1 WITH A = (1+ A);
1895 ** IT is only a special loop symbol within the first clause of a
1896 conditional loop clause;
1897 ** LOOP with a typed iteration variable over a hashtable now
1898 signals a type error iff it should.
1899 * fixed some other bugs revealed by Paul Dietz' test suite:
1900 ** FILE-STREAM now names the class previously known as FD-STREAM;
1901 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1902 argument) no longer signals an error;
1903 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1904 of the slot symbol, rather than using the current package
1905 ((:CONC-NAME "") continues to intern the slot's name in the
1907 * incremented fasl file version number, because of the incompatible
1908 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1909 of the new implementation of DEFINE-COMPILER-MACRO.
1911 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1912 * Support for building SBCL for MIPS platforms running in
1913 little-endian mode has now been checked in, and basic
1914 functionality on said platforms verified.
1915 * minor incompatible change: PCL now records the pathname of a file
1916 in which methods and the like are defined, rather than its
1918 * minor incompatible change: TRUENAME now considers the truename of
1919 a file naming a directory to be the pathname with :DIRECTORY
1920 component indicating that directory.
1921 * minor incompatible change: a NAMED clause in the extended form of
1922 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1923 reason for the previous behaviour is unclear.
1924 * more systematization and improvement of CLOS and MOP conformance
1925 in PCL (thanks to Gerd Moellman and Pierre Mai):
1926 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1928 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1929 primary methods with no specializers;
1930 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1932 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1933 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1934 FORWARD-REFERENCED-CLASSes; error reporting on
1935 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1937 ** SXHASH on CLOS instances now uses a slot internal to the
1938 instance to return different numbers on distinct instances,
1939 while preserving the same return value through invocations of
1941 ** DEFMETHOD signals errors when methods with longer incongruent
1942 lambda lists are added to generic functions;
1943 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1944 CLASS, as specified in AMOP;
1945 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1946 on the order returned by the primary method for classes of
1947 class STANDARD-CLASS;
1948 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1949 * fixed some bugs shown by Paul Dietz' test suite:
1950 ** DOLIST puts its body in TAGBODY;
1951 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1953 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1954 value producing form;
1955 ** if more variables are given to PROGV than values, extra
1956 variables are bound and made to have no value;
1957 ** NSUBSTITUTE on list arguments gets the right answer with
1959 ** ELT signals an error of type TYPE-ERROR when the index argument
1960 is not a valid sequence index;
1961 ** LOOP signals (at macroexpansion time) an error of type
1962 PROGRAM-ERROR when duplicate variable names are found;
1963 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1964 ** FUNCALL of special-operators now cause an error of type
1966 ** PSETQ now works as required in the presence of side-effecting
1967 symbol-macro places;
1968 ** NCONC accepts any object as its last argument;
1969 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1971 ** loop-for-as-package does not require a package to be explicitely
1973 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1975 * fixed bug 166: compiler preserves "there is a way to go"
1976 invariant when deleting code.
1977 * fixed bug 172: macro lambda lists with required arguments after
1978 &REST arguments now cause an error to be signalled. (thanks to
1980 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1981 bug. (thanks to Matthew Danish)
1982 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1984 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1985 arguments are lexically rebound. (thanks to Gerd Moellmann and
1987 * fixed bug 194: error messages are now more informative when there
1988 is no primary method applicable in a call to a generic
1989 function. (thanks to Gerd Moellmann)
1990 * fixed bug in command line argument checking (thanks to Julian
1992 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1993 (thanks to Matthew Danish)
1994 * incremented fasl file version number, because of the
1995 SXHASH-related changes in the layout of CLOS data structures
1997 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1998 * minor incompatible change: The runtime (the Unix executable named
1999 "sbcl") is now much pickier about the .core files it will load.
2000 Essentially it now requires .core files to descend from the same
2001 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2002 as the runtime does. (The intent is to prevent the crashes which
2003 can occur, and which can even be reported as mysterious failures,
2004 when people patch the sources or change the build parameters
2005 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2006 sbcl and .core files.)
2007 * fixed bug: VALUES-LIST is no longer optimized away.
2008 * fixed bug 142: The FFI conversion of C string values to Lisp
2009 string values no longer conses excessively. (thanks to Nathan
2010 Froyd porting Raymond Toy's fix to CMU CL)
2011 * began to systematize and improve MOP conformance in PCL (thanks to
2012 Nathan Froyd, Gerd Moellman and Pierre Mai):
2013 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2015 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2016 ** FINALIZE-INHERITANCE is now called on class finalization;
2017 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2018 argument precedence order.
2019 * fixed bug 202: The compiler no longer fails on functions whose
2020 derived types contradict their declared type.
2021 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2022 so it can be non-toplevel.
2023 * The fasl file version number has changed (because of the new
2024 implementation of DEFMACRO).
2025 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2026 safe code, that any length requirement by their type-specifier
2027 argument is valid. The exceptions to this are described in bug
2029 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2030 functions now check the types of their inputs as required by ANSI.
2031 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2032 introduced symbol is DECLAREd to be SPECIAL.
2033 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2034 * fixed bug: :COUNT argument to sequence functions may be negative
2035 * fixed bug: body of DO-SYMBOLS may contain declarations
2036 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2037 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2038 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2039 symbol macro only once
2040 * fixed printing of call frame when argument list is unavailable
2041 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2042 * compiler no longer signals WARNING on unknown keyword
2045 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2046 * A beta-quality port to the mips architecture running Linux,
2047 based on the old CMUCL backend, has been made. It has been tested
2048 on a big-endian kernel, and works sufficiently well to be able to
2049 rebuild itself; it has not been tested in little-endian mode.
2050 * fixed an inconsistency between gencgc.c and purify.c which made
2051 dumping/loading .core files unreliable
2052 * fixed bug 120a: The compiler now deals correctly with IFs where
2053 the consequent is the same as the alternative, instead of
2054 misderiving the return type. (thanks to Alexey Dejneka)
2055 * fixed bug 113: Logical pathnames are now dumpable (the logical
2056 host is resolved at load-time, throwing an error if it is not
2058 * fixed bug 174: FORMAT's error message is slightly clearer when a
2059 non-printing character is used in a format directive.
2060 * fixed several bugs in compiler checking of type declarations, i.e.
2061 violations of the Python "declarations are assertions" principle
2062 (thanks to Alexey Dejneka)
2063 * fixed several bugs in PCL's error checking (thanks to Gerd
2065 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2067 * fixed bug in compilation of functions as first class values
2068 (thanks to Antonio Martinez-Shotton)
2069 * The compiler's handling TYPE-ERRORs which it can prove will
2070 inevitably happen at runtime has been cleaned up and corrected
2071 in several ways. (thanks to Alexey Dejneka)
2072 * improved argument type checking for various basic arithmetic
2073 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2074 lavished on them in the past that they can be compiled in many
2075 ways in different special cases
2076 * fixed bug 181: compiler checks validity of user supplied type
2078 * cleaned up code flushing in optimization: Function calls which
2079 should signal errors for safety purposes (e.g. which ANSI says
2080 should signal errors when their arguments are of incorrect type)
2081 are no longer optimized away.
2082 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2083 * incremented fasl file version number, because changes in the
2084 implementation of sequence functions like COERCE caused
2085 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2086 in old inline expansions) to become undefined. (Actually these
2087 changes were later undone, so we might very well be binary
2088 compatible with 0.7.7 after all, but leaving the version number
2089 incremented seemed like the simplest and most conservative
2092 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2093 * An alpha-quality port to the parisc architecture running Linux,
2094 based on the old CMUCL backend, has been made. This, even more so
2095 than the other backends, should be considered still a work in
2096 progress; known problems include that the Linux kernel in 64-bit
2097 mode does not propagate the correct sigcontext structure to
2098 userspace, and consequently SBCL on a parisc64 kernel will not
2100 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2101 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2102 suppressed.) Also now that the compiler is looking at declarations
2103 in the environment, it checks optimization declarations as well,
2104 and suppresses inlining when (> DEBUG SPEED).
2105 * More fixes have been made to treatment of floating point exception
2106 treatment and other Unix signals. In particular, floating point
2107 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2108 * The detection and handling of control stack exhaustion (infinite
2109 or very deeply nested recursion) has changed. Stack exhaustion
2110 detection is now done by write-protecting pages at the OS level
2111 and applies at all optimization settings; when found, a
2112 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2113 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2114 be caught using IGNORE-ERRORS.
2115 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2116 correctly when transforming recursive LABELS functions to LETs.
2117 (thanks to Alexey Dejneka)
2118 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2119 that are names of constants or global variables.
2120 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2121 alien routines with docstrings.
2122 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2123 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2125 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2126 (thanks to Eric Marsden)
2127 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2128 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2129 * Bug fix: The SPARC backend can now compile functions involving
2130 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2131 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2132 to a functions expecting a PATHNAME-DESIGNATOR.
2133 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2134 lambda lists. (thanks to Alexey Dejneka)
2135 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2136 functions so that EXPORTing the name of the class doesn't cause
2137 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2138 to Antonio Martinez for reporting this)
2139 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2140 constant-folded without failing an assertion. (thanks to Einar
2141 Floystad Dorum for reporting this)
2142 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2143 types are now dealt with more correctly by the compiler.
2144 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2145 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2146 behaviour analogous to RENAME-FILE. This puts its behaviour more
2147 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2149 * The fasl file version number has changed again. (because of the
2150 bug fix involving the names of PCL MAKE-INSTANCE functions)
2152 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2153 * bug fix: Floating point exceptions are treated much more
2154 consistently on the x86/Linux and PPC/Linux platforms.
2155 * Array initialization with :INITIAL-ELEMENT is now much faster for
2156 cases when the compiler cannot open code the array creation, but
2157 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2158 array accesses have also seen a speed increase.
2159 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2160 specified. (This was at the root of some bad interactions between
2161 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2163 * bug fix: Internal error arguments for undefined functions are now
2164 computed correctly on the PPC/Linux platform.
2165 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2166 Raymond Toy's patch for CMU CL)
2167 * Support for the Solaris 9 operating environment has been included
2168 (thanks to Daniel Merritt)
2169 * A very ugly but hopefully complete draft of the missing FFI chapter
2170 of the manual has been created by reformatting the corresponding
2171 CMU CL manual chapter into (currently very ugly and incoherent)
2172 DocBook and bringing it up to date for SBCL behavior. Thus, the
2173 manual is now essentially complete, at least by my extreme
2174 once-and-only-once standards, whereby it's acceptable to refer to
2175 the doc strings of SB-EXT functions as the primary documentation.
2176 * The fasl file version number has changed again, due to cleanup of
2177 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2178 is no longer a static symbol.)
2180 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2181 * SBCL now builds with OpenMCL (version 0.12) as the
2182 cross-compilation host; also, more progress has been made toward
2183 bootstrapping under CLISP.
2184 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2186 * bug 158 fixed: The compiler can now deal with integer loop
2187 increments different from 1; fixing this turned out also to fix
2189 * bug 169 fixed: no more bogus warnings about using lexical bindings
2190 despite the presence of perfectly good SPECIAL declarations (thanks
2191 to David Lichteblau)
2192 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2193 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2194 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2196 * bug 180 fixed: Method combination specifications no longer ignore
2197 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2198 * bug fix: Structure type predicate functions now check their argument
2199 count as they should.
2200 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2201 correctly. (thanks to Pierre Mai)
2202 * minor incompatible change: The --noprogrammer option is deprecated
2203 in favor of the new --disable-debugger option, which is very similar.
2204 (The major difference is that it takes effect at a slightly different
2205 time at startup, causing handling of errors in --sysinit and
2206 --userinit files will be affected differently.) The
2207 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2208 been added to allow this functionality to be controlled from ordinary
2209 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2210 maintainers, who might want to run non-interactive scripts to
2211 build SBCL cores which will later be used interactively.)
2212 * minor incompatible change: The LOAD function no longer, when given
2213 a wild pathname to load, loads all files matching that pathname.
2214 Instead, an error of type FILE-ERROR is signalled.
2216 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2217 * bug 147 fixed: The compiler preserves its block link/count
2218 invariants more correctly now so that it doesn't crash. (thanks
2220 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2222 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2223 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2224 no-value-for-this-character as NIL (as specified by ANSI).
2225 * HOST-NAMESTRING on physical pathnames now returns a string that is
2226 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2227 (thanks to Christophe Rhodes)
2228 * The Alpha port handles icache flushing more correctly. (thanks to
2230 * More progress has been made toward bootstrapping under CLISP. (thanks
2231 to Christophe Rhodes)
2232 * The fasl file format has changed again, because dynamic loading
2233 on OpenBSD (which has non-ELF object files) motivated some cleanups
2234 in the way that foreign symbols are transformed and passed around.
2235 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2236 is no longer treated as whitespace by the reader, but instead as
2237 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2238 |A
\7fB|, instead of A as it used to.
2240 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2241 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2242 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2243 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2244 this as of 0.7.1.45, but was left out of the previous news section
2245 (thanks to Dan Barlow)
2246 * SBCL now runs on the Solaris operating system on SPARC architectures
2247 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2248 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2249 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2250 * SPARC backend cleanups, allowing builds of cores optimized for V8
2251 and V9 SPARCS, and also emission of code targeted to a particular
2252 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2254 * SBCL is closer to bootstrapping under CLISP, thanks to various
2255 fixes by Christophe Rhodes.
2256 * The fasl file format has changed again, to allow the compiler's
2257 INFO database to support symbol macros.
2258 * The user manual (in doc/) is formatted into HTML more nicely.
2259 (thanks to coreythomas)
2260 * The system is smarter about SUBTYPEP relationships, especially
2261 those involving NOT types (including types such as ATOM which are
2262 represented internally using NOT types). Thus SUBTYPEP is less
2263 likely to return (VALUES NIL NIL) in general, and in particular
2264 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2266 * The fasl file format has changed again, because the internal
2267 representation of types now includes a new slot to support the new
2268 SUBTYPEP-of-NOT-types logic.
2269 * (not a change in the main branch of SBCL, but a related prototype
2270 which can hopefully be merged into the main branch of SBCL in the
2271 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2272 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2273 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2274 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2275 dispatch macro character combinations. (thanks to Alexey Dejneka)
2276 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2277 that superficially look like logical namestrings correctly.
2278 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2280 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2281 default supplied-p) for &optional and &key arguments. (thanks to
2284 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2285 * incompatible change: The compiler is now less aggressive about
2286 tail call optimization, doing it only when (> SPACE DEBUG) or
2287 (> SPEED DEBUG). (This is an incompatible change because there are
2288 programs which relied on the old CMU-CL-style behavior to optimize
2289 away their unbounded recursion which will now die of stack overflow.)
2290 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2291 for non-GENCGC systems has been increased to 20M (since that
2292 seems much closer to the likely performance optimum for modern
2293 systems than the old 4M value was)
2294 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2295 and *DEBUG-PRINT-LEVEL*
2296 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2297 of CMU CL's support for SPARC, and various endianness and other
2298 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2299 * new syntactic sugar for the Unix command line: --load foo.bar is now
2300 an alternate notation for --eval '(load "foo.bar")'.
2302 ** The system now detects stack overflow and handles it gracefully,
2303 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2304 optimization settings. (This is a good thing in general, and
2305 its introduction in this version should be particularly timely
2306 for anyone whose code fails because of suppression of tail
2308 ** The system now hunts for the C variable "environ" in a more
2309 devious way, to avoid segfaults when the C library version differs
2310 between compile time and run time. (thanks to Christophe Rhodes)
2311 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2312 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2313 ** The compiler no longer issues bogus style warnings for undefined
2314 classes in the same source file as the DEFCLASSes which defined
2315 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2317 ** fixes in CONDITION class precedence list for undefined function
2318 errors (thanks to Alexei Dejneka)
2319 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2320 correctly. (thanks to Dan Barlow)
2321 ** portability fixes aiming at bootstrapping under CLISP (thanks
2322 to Dave McDonald and Christophe Rhodes)
2323 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2324 ** fixes in type translation and and type inference (thanks to
2326 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2327 ** various fixes in the new ports (thanks to Dan Barlow)
2328 * several changes related to debugging:
2329 ** suppression of tail recursion, as noted above
2330 ** stack overflow detection, as noted above
2331 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2332 is now the default. (For some time encapsulation has been more
2333 reliable than the breakpoint-based :ENCAPSULATE NIL
2334 implementation, at least on X86 systems; and I just noticed that
2335 encapsulation also seems closer to the spirit of the ANSI
2338 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2340 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2341 up properly again. (There was a packaging bug in 0.7.0 which
2342 left their definitions in SB-SYS::LOAD-FOREIGN and
2343 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2344 vital for most things which interface to C-level interfaces,
2345 like extensions working with sockets or databases or
2346 Perl-compatible regexes or whatever, and the need to fix
2347 this bug is the main reason that 0.7.1 was released so
2349 ** DEFGENERIC is now choosier about the methods it redefines, so that
2350 reLOADing a previously-LOADed file containing DEFGENERICs does
2351 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2352 cycle now works as it should. (thanks to Alexey Dejneka)
2353 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2354 fixed by Christophe Rhodes. (He actually submitted this patch
2355 months ago, and I delayed until after 0.7.0.)
2356 ** Bug 111 (internal compiler confusion about runtime checks on
2357 FUNCTION types) was fixed by Alexey Dejneka.
2358 * Some internal cleanups (getting rid of variables which aren't
2359 needed now that the byte interpreter is gone) caused the fasl
2360 file format number to change again.
2362 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2363 * major incompatible change: The default fasl file extension, i.e. the
2364 default extension for files produced by COMPILE-FILE, has changed
2365 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2367 ** There are many changes in the implementation of the compiler.
2368 SBCL is now essentially a compiler-only implementation of ANSI
2369 Common Lisp. EVAL still "interprets" a few special cases, but
2370 almost all the interesting cases are handled by creating
2371 a LAMBDA expression, calling COMPILE on it, then calling
2372 FUNCALL on the result.
2373 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2374 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2375 Since the code is newer, there might still be some new bugs
2376 (though not as many as before Martin Atzmueller's fixes:-). But
2377 the new code is substantially simpler and clearer, and hopefully
2378 any remaining bugs will be simpler, less fundamental, and more
2379 fixable then the bugs in the old code.
2380 ** The revised compiler is still a little unsteady on its feet.
2382 *** The debugging information it produces (particularly the names
2383 of FUNCTION objects) is sometimes much less useful than what
2384 the old compiler produced.
2385 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2386 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2387 within a MACROLET) has been temporarily weakened.
2388 ** There are new compiler optimizations for various functions:
2389 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2390 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2391 *** the math functions TRUNCATE, FLOOR, and CEILING
2392 *** the function-of-all-trades COERCE
2393 Mostly these should be transparent, but there's one
2394 potentially-annoying problem (bug 117): when the compiler
2395 inline-expands a function and does type analysis on the result,
2396 it can create control paths which have type mismatches, and
2397 when it can't prove that those control paths aren't taken,
2398 it will issue WARNINGs about the type mismatches. This is
2399 a particular problem in practice for the new sequence functions.
2400 It's not clear how this should be fixed, and for now, a
2401 workaround is given in the entry for 117 in the BUGS file.
2402 ** (Because of the interaction between the two previous items --
2403 occasional inlining problems and new inline expansions -- some
2404 of the new sequence function optimizations won't really kick in
2405 completely until debugging information, and then inlining, are
2406 straightened out in some future version.)
2407 * minor incompatible changes:
2408 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2409 DIRECTORY no longer implicitly promotes NIL slots of its
2410 pathname argument to :WILD. In particular, when you ask for the
2411 contents of a directory (which you used to be able to do without
2412 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2413 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2414 ** changes in behavior that ANSI explicitly defines to be
2415 implementation dependent:
2416 *** The new compiler-only implementation still conforms with ANSI,
2417 but acts a little different than before. Besides the obvious
2418 changes in performance tradeoffs (that the cost per form passed
2419 to EVAL has gone up, and the cost per form executed by EVAL
2420 has gone down), the behavior of the system changes a little
2421 because there are no longer any interpreted function objects.
2422 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2423 e.g. doing COMPILE on the output of interactive DEFUN is
2425 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2427 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2428 has changed from (:CL) to NIL.
2429 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2430 e.g. #\Newline and #\Tab, don't have names specified in the
2431 ANSI Common Lisp standard, is now based on their ASCII symbolic
2432 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2433 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2434 are no longer used for output.
2435 ** changes in internal implementation constants:
2436 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2437 4 million. (If your application spends a lot of time GCing and
2438 you have a lot of RAM, you might want to experiment with
2439 increasing it even more.)
2440 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2441 However, almost all old code should still continue to work without
2442 immediate update, as SB-C-CALL is now a (deprecated) nickname
2444 ** Old operator names in the style DEF-FOO are now deprecated in
2445 favor of new corresponding names DEFINE-FOO, for consistency with
2446 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2447 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2448 internal symbols, but a few supported extensions like
2449 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2450 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2451 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2452 etc. as you get deeper into recursive calls to the debugger
2453 command loop, instead of the old "5]", "5]]", "5]]]"
2454 sequence. (I was motivated to do this when squabbles between
2455 ILISP and SBCL left me very deeply nested in the debugger. In the
2456 short term, this change will probably provoke more ILISP/SBCL
2457 squabbles, but hopefully it will be an improvement in the long run.)
2458 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2459 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2460 function, since declaiming return types involving aliens is
2461 (1) annoyingly messy to do by hand and (2) vital to efficient
2462 compilation of code which calls such functions.
2463 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2464 longer reexported by the SB-EXT package. They're solely useful
2465 for alien code, so it seems more logical that you should get
2466 them from the SB-ALIEN package, not in SB-EXT.
2467 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2468 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2469 features. Instead, the code that they used to control is always
2470 built into the system.
2471 * many other bug fixes
2472 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2473 advantage of the new EVAL-WHEN stuff and to clean them up in
2474 general, and they are now more ANSI-compliant in a number of
2475 ways. Martin Atzmueller is responsible for a lot of this.
2476 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2478 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2479 *** correct ERROR type for various file operations
2480 *** some fixes for Lisp streams
2481 *** DEFMETHOD syntax checking
2482 *** changing old weird representation of debug information as
2483 strings (which, among their other deficiencies, don't transform
2484 correctly when you rename packages, and don't change their
2485 print representation when you change things like *PACKAGE*
2486 and *PRINT-LENGTH*) to symbols and lists of symbols
2487 He also made several improvements and fixed several bugs in DESCRIBE.
2488 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2490 *** misbehavior of WRITE-STRING/WRITE-LINE
2491 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2492 and several other LOOP problems as well
2493 *** DIRECTORY when similar filenames are present
2494 *** DEFGENERIC with :METHOD options
2495 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2496 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2497 *** argument ordering in FIND with :TEST option
2498 *** mishandled package designator argument in APROPOS-LIST
2499 *** various problems in the backquote readmacro
2500 *** a bug in APROPOS
2501 *** probably some others that I'm not describing very well here,
2502 since the CVS log documents them by reference to sbcl-devel
2503 messages, and the SourceForge archives aren't working well.:-(
2504 ** Dan Barlow improved the Alpha port (and is making progress on the
2505 PPC port, for those of you who think different).
2506 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2507 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2508 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2509 continues to work on the SPARC port (for those of you in a position
2510 to look down upon our little PC-compatible boxes from a great height).
2511 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2512 and uses that copy, rather than the current dynamic value, when
2513 it's trying to decide whether to truncate output. Thus e.g.
2514 (let ((*print-lines* 50))
2515 (pprint-logical-block (stream nil)
2517 (let ((*print-lines* 8))
2518 (print (aref possiblybigthings i) stream)))))
2519 should now truncate the logical block only at 50 lines, instead of
2520 often truncating it at 8 lines, as it did before.
2521 * The doc/cmucl/ directory, containing old CMU CL documentation
2522 from the time of the fork, is no longer part of the base system.
2523 SourceForge has shut down its anonymous FTP service, and with it
2524 my original plan for distributing the old CMU CL documentation
2525 there. For now, if you need these files you can download an old
2526 SBCL source release and extract them from it.
2527 * The fasl file version number changed again, for dozens of reasons,
2528 some of which are apparent above.
2530 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2531 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2532 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2533 patch, so that DISASSEMBLE output is much nicer.
2534 * The code in the SB-PROFILE package now seems reasonably stable.
2535 I still haven't decided what the final interface should look like
2536 (I'd like PROFILE to interact cleanly with TRACE, since both
2537 facilities use function encapsulation) but if you have a need
2538 for profiling now, you can probably use it successfully with
2539 the current CMU-CL-style interface.
2540 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2541 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2542 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2543 link now returns the dangling link itself, and for similar
2544 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2545 link itself. (In these cases the old code signalled an error and
2546 looped endlessly, respectively.) Thus, DIRECTORY now works even
2547 in the presence of dangling and cyclic symbolic links.
2548 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2549 is now a supported extension again, since the consensus on
2550 sbcl-devel was that it can be useful for ordinary development
2551 work, not just for debugging SBCL itself.
2552 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2553 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2554 that currently-defined functions might be redefined later with
2555 different return types.
2556 * Hash tables can be printed readably, as inspired by CMU CL code
2557 of Eric Marsden and SBCL code of Martin Atzmueller.
2558 * better error handling in CLOS method combination, thanks to
2559 Martin Atzmueller porting Pierre Mai's CMU CL patches
2560 * more overflow fixes for >16Mbyte I/O buffers
2561 * A bug in READ has been fixed, so that now a single Ctrl-D
2562 character suffices to cause end-of-file on character streams.
2563 In particular, now you only need one Ctrl-D at the command
2564 line (not two) to exit SBCL.
2565 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2567 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2568 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2569 does the right thing.
2570 * The implementation of some type tests, especially for CONDITION
2571 types, is now tidier and maybe faster, due to CMU CL code
2572 originally by Douglas Crosher, ported by Martin Atzmueller.
2573 * Some math functions have been fixed, and there are new
2574 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2575 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2576 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2577 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2578 likely to be built into sbcl-0.7.0.)
2579 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2580 CL, ported to SBCL by Martin Atzmueller)
2581 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2582 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2583 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2584 * There's a new slam.sh hack to shorten the edit/compile/debug
2585 cycle for low-level changes to SBCL itself, and a new
2586 :SB-AFTER-XC-CORE target feature to control the generation of
2587 the after-xc.core file needed by slam.sh.
2588 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2589 COMPILE-FILE is no longer supported, so that now every function
2590 gets an entry point, so that block compilation looks a little
2591 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2592 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2593 returns the number of bytes consed since the system started,
2594 rather than the number consed since the first time the function
2595 was called. (The new definition parallels ANSI functions like
2596 CL:GET-INTERNAL-RUN-TIME.)
2597 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2598 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2599 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2600 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2601 * Fasl file version numbers are now independent of the target CPU,
2602 since historically most system changes which required version
2603 number changes have affected all CPUs equally. Similarly,
2604 the byte fasl file version is now equal to the ordinary
2607 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2608 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2609 is no longer recognized. I apologize for this, because it was
2610 listed in SB-EXT as a supported extension, but I found that
2611 its existing behavior was poorly specified, as well as incorrectly
2612 specified, and it looked like too much of a mess to straighten it
2613 out. I have enough on my hands trying to get ANSI stuff to work..
2614 * many patches ported from CMU CL by Martin Atzmueller, with
2615 half a dozen bug fixes in pretty-printing and the debugger, and
2616 half a dozen others elsewhere
2617 * fixed bug 13: Floating point infinities are now supported again.
2618 They might still be a little bit flaky, but thanks to bug reports
2619 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2620 as flaky as they were.
2621 * The --noprogrammer command line option is now supported. (Its
2622 behavior is slightly different in detail from what the old man
2623 page claimed it would do, but it's still appropriate under the
2624 same circumstances that the man page talks about.)
2625 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2626 are now supported, and enabled by default. Thus, the compiler can
2627 handle many floating point and complex operations much less
2628 inefficiently. (Thus e.g. you can implement a complex FFT
2630 * The compiler now detects type mismatches between DECLAIM FTYPE
2631 and DEFUN better, and implements CHECK-TYPE more correctly, and
2632 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2633 thanks to patches from Martin Atzmueller.
2634 * various fixes to make the cross-compiler more portable to
2635 ANSI-conforming-but-different cross-compilation hosts (notably
2636 Lispworks for Windows, following bug reports from Arthur Lemmens)
2637 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2638 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2639 fixed thanks to Pierre Mai's CMU CL patches.
2640 * fixes to keep the system from overflowing internal counters when
2641 it tries to use i/o buffers larger than 16M bytes
2642 * fixed bug 45a: Various internal functions required to support
2643 complex special functions have been merged from CMU CL sources.
2644 (When I was first setting up SBCL, I misunderstood a compile-time
2645 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2646 * improved support for type intersection and union, fixing bug 12
2647 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2648 more obscure bugs as well
2649 * some steps toward byte-compiling non-performance-critical
2650 parts of the system, courtesy of patches from Martin Atzmueller
2651 * Christophe Rhodes has made some debian packages of sbcl at
2652 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2653 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2654 stable, but are nonetheless usable. When he's ready, I'd be happy
2655 to add them to the SourceForge "File Releases" section. (And if
2656 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2657 * new fasl file format version number (because of changes in
2658 internal representation of (OR ..) types to accommodate the new
2659 support for (AND ..) types, among other things)
2661 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2662 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2664 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2666 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2667 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2668 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2669 * DESCRIBE now works on structure objects again.
2670 * Most function call argument type mismatches are now handled as
2671 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2672 know whether the function will be redefined before the call is
2673 executed. (The compiler could flag local calls with full WARNINGs,
2674 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2675 it doesn't keep track of enough information to know whether calls
2676 are local in this sense.)
2677 * Compiler output is now more verbose, with messages truncated
2678 later than before. (There should be some supported way for users
2679 to override the default verbosity, but I haven't decided how to
2680 provide it yet, so this behavior is still controlled by the internal
2681 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2682 src/compiler/ir1util.lisp.)
2683 * Fasl file format version numbers have increased again, because
2684 support for the Gray streams extension changes the layout of the
2685 system's STREAM objects.
2686 * The Gray subclassable streams extension now works, thanks to a
2687 patch from Martin Atzmueller.
2688 * The full LOAD-FOREIGN extension (not just the primitive
2689 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2690 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2691 but like most other programs, it defaults to copying the Unix
2692 environment from the original process instead of starting the
2693 new process in an empty environment.
2694 * Extensions which manipulate the Unix environment now support
2695 an :ENVIRONMENT keyword option which doesn't smash case or
2696 do other bad things. The CMU-CL-style :ENV option is retained
2697 for porting convenience.
2698 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2699 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2701 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2703 * A patch from Martin Atzmueller seems to have solved the SIGINT
2704 problem, and as far as we know, signal-handling now works cleanly.
2705 (If you find any new bugs, please report them!)
2706 * The system no longer defaults Lisp source file names to types
2707 ".l", ".cl", or ".lsp", but only to ".lisp".
2708 * The compiler no longer uses special default file extensions for
2709 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2710 seems to expect a single default extension for all compiled code,
2711 and there's no compelling reason to try to stretch the standard
2712 to allow two different extensions.) Instead, byte-compiled files
2713 default to the same extension as native-compiled files.
2714 * Fasl file format version numbers have increased again, because
2715 a rearrangement of internal implementation packages made some
2716 dumped symbols in old fasl files unreadable in new cores.
2717 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2718 many fewer weird special cases.
2719 * Bug #17 (differing COMPILE-FILE behavior between logical and
2720 physical pathnames) has been fixed, and some related misbehavior too,
2721 thanks to a patch from Martin Atzmueller.
2722 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2723 by Tim Moore, ported to SBCL by Martin Atzmueller.
2724 * Martin Atzmueller fixed several filesystem-related problems,
2725 including bug #36, in part by porting CMU CL patches, which were
2726 written in part by Paul Werkowski.
2727 * More compiler warnings in src/runtime/ are gone, thanks to
2728 more patches from Martin Atzmueller.
2729 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2732 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2734 * DESCRIBE now works on CONDITION objects.
2735 * The debugger now handles errors which arise when trying to print
2736 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2738 * The build system now uses an additional file, customize-target-features.lisp,
2739 to allow local modifications to the target *FEATURES* list. (The point of
2740 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2741 debugging features enabled, without having to worry about propagating it
2742 into everyone's system when I do a "cvs update".) When no
2743 customize-target-features.lisp file exists, the target *FEATURES* list
2744 should be constructed the same way as before.
2745 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2746 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2747 warn about behavior which is undefined under the ANSI spec. Note: This
2748 is specified by ANSI, but it's not very popular with programmers.
2749 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2750 macro in the SBCL sources for an example of a workaround which you
2751 might use to make portable ANSI-standard code which does what you want.
2752 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2753 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2754 when it's used as a non-toplevel form. (This is required in order
2755 to implement the DEFCONSTANT-EQX macro.)
2756 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2757 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2758 funny things, due to bugs in the implementation of EVAL-WHEN
2759 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2760 non-toplevel DEFCONSTANTs are uncommon.)
2761 * The core file version number and fasl file version number have been
2762 incremented, because the old noncompliant DEFCONSTANT behavior involved
2763 calling functions which no longer exist, and because I also took the
2764 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2765 * fixed bug 1 (error handling before read-eval-print loop starts), and
2766 redid debugger restarts and related debugger commands somewhat while
2768 ** The QUIT debugger command is gone, since it did something
2769 rather different than the SB-EXT:QUIT command, and since it never
2770 worked properly outside the main toplevel read/eval/print loop.
2771 Invoking the new TOPLEVEL restart provides the same functionality.
2772 ** The GO debugger command is also gone, since you can just invoke
2773 the CONTINUE restart directly instead.
2774 ** The TOP debugger command is also gone, since it's redundant with the
2775 FRAME 0 command, and since it interfered with abbreviations for the
2777 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2779 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2780 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2781 some porting work by Martin Atzmueller)
2782 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2783 with a boatload of patches which he ported to SBCL. Now that those
2785 ** The system tries to make sure that its low-priority messages
2786 are prefixed by semicolons, to help people who like to use
2787 syntax highlighting in their ILISP buffer. (This patch
2788 was originally due to Raymond Toy.)
2789 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2790 patches originally written by Raymond Toy.
2791 ** The compiler understands coercion between single-value and
2792 multiple-VALUES type expressions better, getting rid of some very
2793 weird behavior, thanks to patches originally by Robert MacLachlan
2794 and Douglas Crosher.
2795 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2796 lambda lists, thanks to a patch originally by Pierre Mai.
2797 ** The system no longer bogusly warns about "abbreviated type
2799 ** The compiler gets less confused by inlining and RETURN-FROM,
2800 thanks to some patches originally by Tim Moore.
2801 ** The system no longer hangs when dumping circular lists to fasl
2802 files, thanks to a patch originally from Douglas Crosher.
2803 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2804 undefined function error.
2805 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2806 in structure slot initforms) for now, documented workaround instead:-|
2807 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2808 * fixed bug 5: added stubs for various Gray stream functions called
2809 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2810 installed, at least appropriate type errors are generated
2811 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2812 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2813 consistently in DEFMETHOD forms.
2814 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2815 it doesn't seem to affect SBCL after all
2816 * The C runtime system now builds with better optimization and many
2817 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2819 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2821 * The system is now under CVS at SourceForge (instead of the
2822 CVS repository on my home machine).
2823 * The new signal handling code has been tweaked to treat register
2824 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2825 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2826 downstream, e.g. in debug-int.lisp, has implicit dependencies
2827 on the unsignedness of integer representation of machine words,
2828 and that caused the system to bomb out with infinite regress
2829 when trying to recover from type errors involving signed values,
2830 e.g. (BUTLAST '(1 2 3) -1).)
2831 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2832 (This was one of the bugs Peter Van Eynde reported back in July.)
2833 * The system now uses code inspired by Colin Walters' O(N)
2834 implementation of MAP (from the cmucl-imp@cons.org mailing
2835 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2836 inline the MAP operation, and there is more than one
2837 sequence argument to the MAP call (so that it can't just
2838 do ETYPECASE once and for all based on the type of the
2839 single sequence argument). (The old non-inline implementation
2840 of the general M-argument sequence-of-length-N case required
2841 O(M*N*N) time when any of the sequence arguments were LISTs.)
2842 * The QUIT :UNIX-CODE keyword argument has been renamed to
2843 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2844 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2846 * Raymond Wiker's patches to port dynamic loading from Linux to
2847 FreeBSD have been added.
2848 * The BUGS file is now more nearly up to date, thanks in large part
2849 to Martin Atzmueller's review of it.
2850 * The debugger now flushes standard output streams before it begins
2851 its output ("debugger invoked" and so forth).
2852 * The core version number and fasl file version number have both
2853 been incremented, because of incompatible changes in the layout
2855 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2856 used to not be called for a saved Lisp image.)
2857 * Martin Atzmueller's version of a patch to fix a compiler crash,
2858 as posted on sbcl-devel 13 September 2000, has been installed.
2859 * Instead of installing Martin Atzmueller's patch for the
2860 compiler transform for SUBSEQ, I deleted the compiler transform,
2861 and transforms for some similar consing operations.
2862 * A bug in signal handling which kept TRACE from working on OpenBSD
2864 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2865 away by constant folding
2866 * The system now defines its address space constants in one place
2867 (in the Lisp sources), and propagates them automatically elsewhere
2868 (through GENESIS and the sbcl.h file). Therefore, patching the
2869 address map is less unnecessarily tedious and error-prone. The
2870 Lisp names of address space constants have also been systematized.
2871 * CVS tags like dollar-Header-dollar have been removed from
2872 the sources, because they have never saved me trouble and
2873 they've been source of trouble working with patches and other
2874 diff-related operations.
2875 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2876 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2878 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2880 * The system has been ported to OpenBSD.
2881 * The system now compiles with a simple "sh make.sh" on the systems
2882 that it's supported on. I.e., now you no longer need to tweak
2883 text in the target-features.lisp-expr and symlinks in src/runtime/
2884 by hand, the make.sh takes care of it for you.
2885 * The system is no longer so grossly inefficient when compiling code
2886 involving vectors implemented as general (not simple) vectors (VECTOR T),
2887 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2888 which dares to use the various sequence functions on non-simple
2889 vectors, takes less of a performance hit.
2890 * There is now a primitive type predicate VECTOR-T-P
2891 to test for the (VECTOR T) type, so that e.g.
2892 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2893 can now be compiled with some semblance of efficiency. (The old code
2894 turned the type declaration into a full call to %TYPEP at runtime!)
2895 * AREF on (VECTOR T) is still not fast, since it's still compiled
2896 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2897 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2898 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2899 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2900 without making full calls to SUBTYPEP at runtime.
2901 (Some analogous efficiency issues for non-simple vectors specialized to
2902 element types other than T, or for non-simple multidimensional arrays,
2903 have not been addressed. They could almost certainly be handled the
2904 same way if anyone is motivated to do so.)
2905 * The changes in array handling break binary compatibility, so
2906 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2907 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2908 instead of (VALUES T T).
2909 * By following the instructions that Dan Barlow posted to sbcl-devel
2910 on 2 July 2000, I was able to enable primitive dynamic object
2911 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2912 functionality is not implemented (since it calls ld to resolve
2913 library references automatically, requiring RUN-PROGRAM for its
2914 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2915 try to resolve library references) is now supported.
2916 * The system now flushes the standard output streams when it terminates,
2917 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2918 them at several other probably-convenient times, e.g. in each pass of
2919 the toplevel read-eval-print loop, and after evaluating a form given
2920 as an "--eval" command-line option. (These changes were motivated by a
2921 discussion of stream flushing issues on cmucl-imp in August 2000.)
2922 * The source transform for TYPEP of array types no longer assumes
2923 that an array whose element type is a not-yet-defined type
2924 is implemented as an array of T, but instead punts, so that the
2925 type will be interpreted at runtime.
2926 * There is now some support for cross-compiling in make.sh: each of
2927 the phases of make.sh has its own script. (This should be transparent
2928 to people doing ordinary, non-cross-compile builds.)
2929 * Since my laptop doesn't have hundreds of megabytes of memory like
2930 my desktop machine, I became more motivated to do some items on
2931 my to-do list in order to reduce the size of the system a little:
2932 ** Arrange for various needed-only-at-cold-init things to be
2933 uninterned after cold init. To support this, those things have
2934 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2935 symbols with such names are now uninterned after cold init).
2936 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2937 fasl files for cold load.
2938 ** Remove the old compiler structure pooling code (which used to
2939 be conditional on the target feature :SB-ALLOC) completely.
2940 ** Redo the representation of some data in cold init to be more compact.
2941 (I also looked into supporting byte compiled code at bootstrap time,
2942 which would probably reduce the size of the system a lot, but that
2943 looked too complicated, so I punted for now.)
2944 * The maximum signal nesting depth in the src/runtime/ support code has
2945 been reduced from 4096 to 256. (I don't know any reason for the very
2946 large old value. If the new smaller value turns out to break something,
2947 I'll probably just bump it back up.)
2948 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2950 * Many, many bugs reported by Peter Van Eynde have been added to
2951 the BUGS list; some have even been fixed.
2952 * While enabling dynamic object file loading, I tried to make the
2953 code easier to understand, renaming various functions and variables
2954 with less ambiguous names, and changing some function calling
2955 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2956 * While trying to figure out how to do the OpenBSD port, I tried to
2957 clean up some of the code in src/runtime/. In particular, I dropped
2958 support for non-POSIX signal handling, added various comments,
2959 tweaked the code to reduce the number of compilation warnings, and
2960 renamed some files to increase consistency.
2961 * To support the new automatic configuration functionality in make.sh,
2962 the source file target-features.lisp-expr has been replaced with the
2963 source file base-target-features.lisp-expr and the machine-generated
2964 file local-target-features.lisp-expr.
2965 * fixed a stupid quoting error in make.sh so that using CMU CL
2966 "lisp -batch" as cross-compilation host works again
2968 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2970 * DESCRIBE no longer tries to call itself recursively to describe
2971 bound/fbound values, so that it no longer fails on symbols which are
2972 bound to themselves (like keywords, T, and NIL).
2973 * DESCRIBE now works on generic functions.
2974 * The printer now prints less-screwed-up representations of closures
2975 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2976 * A private symbol is used instead of the :EMPTY keyword previously
2977 used to mark empty slots in hash tables. Thus
2978 (DEFVAR *HT* (MAKE-HASH-TABLE))
2979 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2980 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2981 now does what ANSI says that it should. (You can still get
2982 similar noncompliant behavior if bang on the hash table
2983 implementation with all the symbols you get back from
2984 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2985 This breaks binary compatibility, since tests for equality to
2986 :EMPTY are wired into things like the macroexpansion of
2987 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2989 * There's now a minimal placeholder implementation for CL:STEP,
2990 as required by ANSI.
2991 * An obscure bug in the interaction of the normal compiler, the byte
2992 compiler, inlining, and structure predicates has been patched
2993 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2994 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2996 * Missing ordinary arguments in a macro call are now detected even
2997 when the macro lambda list contains &KEY or &REST.
2998 * The debugger no longer complains about encountering the top of the
2999 stack when you type "FRAME 0" to explicitly instruct it to go to
3000 the top of the stack. And it now prints the frame you request even
3001 if it's the current frame (instead of saying "You are here.").
3002 * As specified by ANSI, the system now always prints keywords
3003 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3005 * The default initial SIZE of HASH-TABLEs is now smaller.
3006 * Type information from CLOS class dispatch is now propagated
3007 into DEFMETHOD bodies, so that e.g.
3008 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3010 is now basically equivalent to
3011 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3012 (DECLARE (TYPE SINGLE-FLOAT X))
3014 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3015 operation, without having to do run-time type dispatch.
3016 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3017 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3018 * Since I don't seem to be making big file reorganizations very often
3019 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3020 is overflowing my ability to conveniently back them up), I've finally
3021 checked the system into CVS. (The CVS repository is on my home system,
3022 not at SourceForge -- putting it on SourceForge might come later.)
3023 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3024 high-level GC-NOTIFY-FOO functions send their output. (There's
3025 still very little control of where low-level verbose GC functions
3026 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3027 less than it used to -- the GC-NOTIFY-FOO functions are now under
3028 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3029 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3030 in only one place in the source code, and propagates it automatically
3031 everywhere that it's needed. Thus e.g. when I bump the version from
3032 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3033 * The C source files now include boilerplate legalese and documentation
3034 at the head of each file (just as the Lisp source files already did).
3035 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3036 to his page will be replaced with a link to his new CLiki service.
3038 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3040 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3041 * The build process now looks for GNU make under the default name "gmake",
3042 instead of "make" as it used to. If GNU make is not available as "gmake"
3043 on your system, you can change this default behavior by setting the
3044 GNUMAKE environment variable.
3045 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3046 can build without error under CMU CL.
3048 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3050 * There is now a partial SBCL user manual (with some new text and some
3051 text cribbed from the CMU CL manual).
3052 * The beginnings of a profiler have been added (starting with the
3053 CMU CL profiler and simplifying and cleaning up). Eventually the
3054 main interface should be through the TRACE macro, but for now,
3055 it's still accessed through vaguely CMU-CL-style functions and macros
3056 exported from the package SB-PROFILE.
3057 * Some problems left over from porting CMU CL to the new
3058 cross-compilation bootstrap process have been cleaned up:
3059 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3060 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3061 part when getting rid of the compiler *BACKEND* stuff.)
3062 ** The value of *NULL-TYPE* was screwed up, because it was
3063 being initialized before the type system knew the final
3064 definition of the 'NULL type. This screwed up several key
3065 optimizations in the compiler, causing inefficiency in all sorts
3066 of places. (I found it because I wanted to understand why
3067 GET-INTERNAL-RUN-TIME was consing.)
3068 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3069 PROCLAIM FTYPE information. Unfortunately this broke binary
3070 compatibility again, since now the forms output by DEFGENERIC
3071 to refer to functions which didn't exist in 0.6.3.
3072 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3073 can use the new (as of 0.6.3) transform for SOME into MAP into
3075 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3076 values to (INTEGER 0 1000000), so that the time code will no longer
3077 occasionally get blown up by Linux returning 1000000 microseconds
3078 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3079 its output conform to the ANSI spec. (Alas, this makes its output
3080 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3081 * A full call to MAP NIL with a single sequence argument no longer conses.
3082 * fixes to problems pointed out by Martin Atzmueller:
3083 * The manual page no longer talks about multiprocessing as though
3084 it were currently supported.
3085 * The ILISP support patches have been removed from the distribution,
3086 because as of version 5.10.1, ILISP now supports SBCL without us
3087 having to maintain patches.
3088 * added a modified version of Raymond Toy's recent CMU CL patch for
3089 EQUALP comparison of HASH-TABLE
3091 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3093 * The system still can't cross-compile itself with
3094 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3095 entails), but at least it can compile more of itself that way
3096 than it used to be able to, and various buglets which were uncovered
3097 by trying to cross-compile itself that way have now been fixed.
3098 * This release breaks binary compatibility again. This time
3099 at least I've incremented the FASL file format version to 2, so that the
3100 problem can be detected reliably instead of just causing weird errors.
3101 * various new style warnings:
3102 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3103 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3104 ** using the lexical binding of a variable named in the *FOO* style
3105 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3106 as specified by ANSI.
3107 * *RANDOM-STATE* is no longer automatically initialized from
3108 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3109 default behavior of the system is to repeat its behavior every time
3110 it's run. If you'd like to change this behavior, you can always
3111 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3112 old convention there was no comparably easy way to get the system to
3113 repeat its behavior every time it was run.
3114 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3115 FTYPE declarations has been removed, in favor of their ANSI
3116 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3117 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3118 the types of their sequence arguments can be determined at compile time.
3119 This is done through a new open code expansion for MAP which eliminates
3120 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3121 argument types can be determined at compile time.
3122 * The optimizer now transforms COERCE into an identity operation when it
3123 can prove that the coerced object is already of the correct type. (This
3124 can be a win for machine generated code, including the output of other
3125 optimization transforms, such as the MAP transform above.)
3126 * Credit information has been moved from source file headers into CREDITS.
3127 * Source file headers have been made more standard.
3128 * The CASE macro now compiles without complaining even when it has
3131 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3133 * (Note that the way that the PCL macroexpansions were rewritten
3134 to accommodate the change in DEFGENERIC below breaks binary
3135 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3136 not run under sbcl-0.6.2. Once we get out of alpha releases,
3137 i.e. hit release 1.0.0, we'll probably try to maintain binary
3138 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3139 and sbcl-1.4.4. Until then, however, it might be fairly common
3140 for maintenance releases to break binary compatibility.)
3141 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3143 * The reporting of unhandled signals has been changed to print some
3144 explanatory text as well as the report form. (Previously only
3145 the report form was printed.)
3146 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3147 it defines, so that the compiler no longer issues undefined function
3148 warnings for compiled-but-not-yet-loaded generic functions.
3149 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3150 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3151 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3152 section of the ANSI spec are supported.
3153 * The "" nickname for the "KEYWORD" package has been removed.
3154 The reader still handles symbol tokens which begin with a package marker
3155 as keywords, but it doesn't expose its mechanism for doing so in the
3156 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3157 * The system now issues STYLE-WARNINGs for contradictory TYPE
3158 proclamations. (Warnings for contradictory FTYPE proclamations would
3159 be nice too, but those can't be done usefully unless the type system
3160 is made smarter about FUNCTION types.)
3161 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3162 systematized, so that "*target-*.lisp is supposed to exist only on the
3163 target and imply that there's a related file which exists on the
3164 host, and *host-*.lisp is supposed to exist only on the host and imply
3165 that there's a related file which exists on the target. This involves a
3166 lot of renaming. Hopefully the acute confusion caused by the renaming
3167 will be justified by the reduction in chronic confusion..
3168 ** runtime-type.lisp -> early-target-type.lisp
3169 ** target-type.lisp -> late-target-type.lisp
3170 ** early-host-format.lisp -> early-format.lisp
3171 ** late-host-format.lisp -> late-format.lisp
3172 ** host-error.lisp -> misc-error.lisp
3173 ** early-error.lisp -> early-target-error.lisp
3174 ** late-error.lisp -> late-target-error.lisp
3175 ** host-defboot.lisp -> early-defboot.lisp
3176 ** code/misc.lisp -> code/target-misc.lisp
3177 ** code/host-misc.lisp -> code/misc.lisp
3178 ** code/numbers.lisp -> code/target-numbers.lisp
3179 ** code/early-numbers.lisp -> numbers.lisp
3180 ** early-host-type.lisp -> early-type.lisp
3181 ** late-host-type.lisp -> late-type.lisp
3182 ** host-typep.lisp -> typep.lisp
3183 ** load.lisp -> target-load.lisp
3184 ** host-load.lisp -> load.lisp
3185 ** host-disassem.lisp -> disassem.lisp
3186 ** host-insts.lisp -> insts.lisp
3187 ** byte-comp.lisp -> target-byte-comp.lisp
3188 ** host-byte-comp.lisp -> byte-comp.lisp
3189 ** host-signal.lisp -> signal.lisp
3190 ** host-defstruct.lisp -> defstruct.lisp
3191 ** late-target-type.lisp -> deftypes-for-target.lisp
3192 Furthermore, several other previously target-only files foo.lisp (e.g.
3193 hash-table.lisp and random.lisp) have been split into a target-and-host
3194 foo.lisp file and a target-only target-foo.lisp file, with their key type
3195 definitions in the target-and-host part, so that the cross-compiler will
3196 know more about target types.
3197 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3198 gone away. In their place are various *BACKEND-FOO* variables
3199 corresponding to the slots of the old structure.
3200 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3201 into the target SBCL has been fixed.
3202 * The chill.lisp system for loading cold code into a running SBCL
3204 * Support for the CMU CL "scavenger hook" extension has been removed.
3205 (It was undocumented and unused in the CMU CL sources that SBCL was
3206 derived from, and stale in sbcl-0.6.1.)
3207 * Various errors in the cross-compiler type system were detected
3208 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3209 (enabling various consistency checks). Many of them were fixed,
3210 but some hard problems remain, so the compiler is back to
3211 running without *TYPE-SYSTEM-INITIALIZED* for now.
3212 * As part of the cross-compiler type system cleanup, I implemented
3213 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3214 * I have started adding UNCROSS calls throughout the type system
3215 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3216 on cross-compiler input files will be able to go away, and various
3218 * CONSTANTP now returns true for quoted forms (as explicitly required
3221 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3223 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3224 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3225 (MAKE-LIST -1). In the longer term, it ought to become true
3226 that declarations are assertions even at SAFETY 1. For now, it's not
3227 quite true even at SAFETY 3, but it's at least more nearly true..
3228 (Note that this change seems to increases the size of the system by
3229 O(5%) and to decrease the speed of the compiler by 20% or more.)
3230 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3231 for the problem of printing dozens of lines of distracting information
3232 about low-level system machinery as part of the top stack frame
3233 on entry to the debugger when an undefined function was called.
3234 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3235 is not reset to COMMON-LISP-USER.
3236 * Compilation of stuff related to dyncount.lisp has been made conditional
3237 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3238 smaller. The various dyncount-related symbols have been moved into
3239 a new "SB-DYNCOUNT" package.
3240 * tty-inspect.lisp has been renamed to inspect.lisp.
3241 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3242 feature has gone away. (When we eventually port to other flavors of
3243 libc and/or Unix, we'll try to make the differences between flavors
3244 invisible at the user level.)
3245 * Various other *FEATURES* tags, and/or their associated conditionals,
3246 have been removed if obsolescent, or given better documentation, or
3247 sometimes given more-mnemonic names.
3249 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3251 * tidied up "make.sh" script
3252 * tidied up system directory structure
3253 * better "clean.sh" behavior
3254 * added doc/FOR-CMUCL-DEVELOPERS
3255 * many many small tweaks to output format, e.g. removing possibly-confusing
3256 trailing #\. character in DESCRIBE-INSTANCE
3257 * (EQUALP #\A 'A) no longer signals an error.
3258 * new hashing code, including EQUALP hashing
3259 * tidied up Lisp initialization and toplevel
3260 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3261 * command line argument processing
3262 * added POSIX-GETENV function to deal with Unix-ish environment variables
3263 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3264 terminating SBCL on EOF
3265 * non-verbose GC by default
3266 * There is no more "sbcl" shell script; the sbcl file is now the C
3267 runtime executable (just like CMU CL).
3268 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3270 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3271 symbol and package information as Lisp native symbol and package objects
3272 instead of strings naming symbols and strings naming packages. This way,
3273 whenever packages are renamed (as in warm init), debug information is
3274 transformed along with everything else.
3275 * tweaked the optimization policy declarations which control the building
3276 of SBCL itself. Now, among other things, the system no longer saves
3277 source location debugging information. (This helps two problems at once
3278 by reducing SBCL size and by keeping SBCL from trying to look for its
3279 sources -- which may not exist -- when reporting errors.)
3280 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3281 debugging and testing purposes
3282 * cleaned up printing, making the printer call PRINT-OBJECT for
3283 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3284 methods, giving nearly-ANSI behavior
3285 * converted almost all special variables to use *FOO* naming convention
3286 * deleted PARSE-TIME functionality, since it can be done portably
3287 * moved some files out of cold init into warm init
3288 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3290 * regularized formatting of source files
3291 * added an install.sh script
3292 * fixed ridiculous memory usage of cross-compiler by making
3293 compiler/alloc.lisp not try to do pooling unless it can hook
3294 itself into the GC of the cross-compilation host. Now the system
3295 builds nicely on my old laptop.
3296 * added :SB-ALLOC in target-features.lisp-expr
3297 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3298 was not implemented)
3299 * re-did condition handling and note reporting in the compiler. Notes
3300 are no longer handled by signalling conditions. Style warnings
3301 and warnings are handled more correctly and reported in such a way
3302 that it's easy to find one or the other in your output (so that you
3303 can e.g. figure out which of many problems caused COMPILE-FILE to
3305 * changed the severity of several compiler warnings from full WARNING
3306 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3307 compiler note reporting so that it doesn't use the condition system
3308 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3309 COMPILE-FILE command)
3310 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3311 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3312 no longer supported, since their implementation was deeply intertwingled
3313 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3314 * removed bogus "support" for compiler macros named (SETF FOO), and
3315 removed the compiler macro for SETF INFO (but only after making a fool
3316 of myself on the cmucl-imp mailing list by posting a bogus patch for
3317 DEFINE-COMPILER-MACRO..)
3318 * Compiled files containing forms which have side effects on the Lisp
3319 reader (such as DEFPACKAGE forms) are now handled more correctly.
3320 (Compiler queuing of top level lambdas has been suppressed by setting
3321 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3322 * deleted various currently-unused source files, e.g. gengc.lisp. They
3323 may be added back at some point e.g. when porting to other architectures,
3324 but until they are it's distracting to distribute them and to try to
3326 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3327 there were so many of them they're just distractions, and UNCROSS is
3328 known to be able to handle the current sources
3329 * moved PROFILE functionality into TRACE, so that it will be clear
3330 how the wrapping and unwrapping of functions when you profile them
3331 interacts with the wrapping and unwrapping of functions when you
3332 trace them. (Actually, the functionality isn't there yet, but at least
3333 the interface specification is there. Hopefully, the functionality will
3334 arrive with some future maintenance release.)
3335 * removed host-oops.lisp
3336 * changed signature of QUIT function to allow UNIX-CODE argument
3337 * fixed READ-SEQUENCE bug
3338 * tweaked verbose GC output so that it looks more like the progress
3339 output that ANSI specifies for functions like LOAD
3340 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3341 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob