1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
3 * new platform: experimental support for the Windows operating
4 system has been added. (thanks to Alastair Bridgewater)
5 * fixed several bugs in and robustified the PPC FFI (including
6 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
7 * bug fix: allow non-simple string symbol names (reported by Paul
9 * bug fix: interrupt handling on NetBSD (thanks to Richard M
11 * bug fix: saving a core corrupted callbacks on x86/x86-64
12 * optimization: major improvements to GC efficiency on GENCGC platforms
13 * optimization: faster implementation of EQUAL
14 * optimization: emit more efficient opcodes for some common
15 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
16 * optimization: several other minor code-generation improvements on x86-64
17 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
19 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
20 * minor incompatible change: (SETF CLASS-NAME) and (SETF
21 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
22 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
23 by ANSI as a generic function, and for consistency (SETF
24 GENERIC-FUNCTION-NAME) is treated likewise.
25 * fixed bug #233.b: make constraint propagation notice when a variable
26 value is changed after it is referenced but before it is used
27 * fixed bug #296: no more arbitrary behaviour from filenames with
28 odd characters as --load arguments. (reported by Adam Warner)
29 * fixed bug #390: :CHARACTER-SET pathname components now work as
30 expected. (reported by Tim Daly Jr)
31 * fixed bug #391: complicated :TYPE intersections in slot
32 definitions no longer cause an error in PCL internals.
33 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
34 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
35 returning the number of octets which would be written to the
36 file-stream. (thanks to Robert J. Macomber)
37 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
38 arguments to the internal stream functions. (thanks to David
40 * bug fix: stack exhaustion is now handled on the x86/SunOS
41 platform. (thanks to Daisuke Homma)
42 * bug fix: more accurate ROOM results on GENCGC platforms
43 * optimization: improved type inference for arithmetic-for
44 index variables in LOOP
45 * optimization: faster floating-point SQRT on x86-64
46 * fixed some bugs revealed by Paul Dietz' test suite:
47 ** DOCUMENTATION returns NIL instead of "" for method combinations
48 that don't have a docstring
50 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
51 * minor incompatible change: (SETF CLASS-NAME) and (SETF
52 GENERIC-FUNCTION-NAME) are no longer generic functions, and
53 therefore are not customizeable by user code (as seems to be at
54 least permitted and maybe required by AMOP). As a consolation,
55 however, the SBCL implementation of these functions now calls
56 REINITIALIZE-INSTANCE as specified by AMOP.
57 * bug fix: slot-definition documentation is propagated as per ANSI
58 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
59 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
60 argument, as do eslotd initialization methods. (from Pascal
61 Costanza's "Closer" project)
62 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
63 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
65 * bug fix: it is now possible to have more than one subclass of
66 STANDARD-GENERIC-FUNCTION without causing stack overflow.
67 (reported by Bruno Haible, Pascal Costanza and others)
68 * bug fix: the dependent update protocol now works for generic
69 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
71 * bug fix: condition-class instances corresponding to
72 DEFINE-CONDITION forms are now created eagerly. (reported by
73 Kalle Olavi Niemitalo on comp.lang.lisp)
74 * bug fix: floating point printing is more accurate in some
75 circumstances. (thanks to Simon Alexander)
76 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
77 merged with *DEFAULT-PATHNAME-DEFAULTS*.
78 * bug fix: callbacks on OS X now preserve stack-alignment.
79 (thanks to Cyrus Harmon)
80 * enhancement: the x86-64 disassembler is much better at
81 disassembling SSE instructions. (thanks to Lutz Euler)
82 * enhancement: CHECK-TYPE on a variable now allows type-inference
83 (thanks to Vincent Arkesteijn)
84 * optimization: improved performance of EUC-JP external format.
85 (thanks to NIIMI Satoshi)
86 * optimization: performance improvements to IO on file streams of
87 :ELEMENT-TYPE CHARACTER
88 * optimization: much faster memory allocation on x86-64
89 * optimization: faster garbage collections (latency and throughput)
91 * optimization: faster bignum subtraction and division on x86 and x86-64
92 (thanks to Lutz Euler)
93 * optimization: more accurate type-inference for loops that use a
94 floating point index variable or a negative step.
96 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
97 * bug fix: add a workaround to SBCL looping infinitely at startup on
98 Linux kernels with apparently buggy implementations of personality().
99 (thanks to Svein Ove Aas)
100 * bug fix: Unicode symbols are correctly printed in LDB backtraces
101 (thanks to David Lichteblau)
102 * bug fix: local bindings shadow global symbol macros for
103 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
104 * optimization: non-open coded uses of numeric comparison operators
105 (e.g. >) no longer cons when called with more than one parameter
106 on platforms supporting dynamic-extent allocation.
107 * enhancement: saving cores with foreign code loaded is now supported
108 on MIPS/Linux in addition to the previously supported platforms.
109 * bug fix: FIND-RESTART now tests for activity, not applicability when given
110 a restart object as identifier. (reported by Helmut Eller for CMUCL)
111 * bug fix: division by zero in sb-sprof when no samples were collected
112 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
113 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
114 (thanks to Alexander Kjeldaas)
115 * new feature: ignoring the return values of destructive functions
116 like NREVERSE signals a compile-time style-warning.
117 (thanks to Kevin Reid)
118 * new feature: the alignment of alien structure fields can be
119 explicitly specified. (thanks to Cyrus Harmon)
120 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
121 and dump core on SIGQUIT
123 ** incompatible change: threads do not inherit values of specials
124 from their parents (see manual)
125 ** bug fix: threads stacks belonging to dead threads are freed by the
126 next exiting thread, no need to gc to collect thread stacks anymore
127 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
128 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
129 ** bug fix: dynamic variable and thread start related gc lossage
130 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
132 * fixed some bugs revealed by Paul Dietz' test suite:
133 ** SUBTYPEP is slightly more accurate on heinously complicated
134 CONS types where some of the members have uncertain (in the
135 NIL, NIL sense) type relationships to each other.
137 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
138 no longer purified unless :PURIFY T is explicitly specified.
139 ** Non-purified cores are significantly smaller than before
141 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
142 * new feature: timers based on Zach Beane's excellent timer package
143 * added support for the following external formats: koi8-u,
144 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
145 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
146 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
147 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
148 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
149 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
150 * incompatible change: a threaded SBCL will no longer revert to
151 non-threaded mode on non-NPTL systems, but refuse to start entirely.
152 * bug fix: interrupts are disabled until startup is complete; no
153 more sigsegvs when receiving a signal to soon
154 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
156 * bug fix: add a workaround for the memory randomization features in
157 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
158 workaround will only be in effect on systems with the proc filesystem
160 * bug fix: printing objects of type HASH-TABLE signals a
161 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
163 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
164 have been running for over 50 days. (reported by Gilbert Baumann)
165 * bug fix: the logic for getting names of functions gets less
166 confused when confronded with alternate-metaclass
167 funcallable-instances. (reported by Cyrus Harmon)
168 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
169 consistent, even on internal alternate-metaclass objects.
170 * bug fix: flush closure information collected by physical
171 environment analysis prepass before the main pass. (bug reported
173 * bug fix: compiler pack phase does not modify a hashtable, which is
174 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
175 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
176 may be expanded. (reported by Alexander <malishev> on c.l.l)
177 * bug fix: no more style-warnings when compiling code using LAST
178 under high-SPEED low-SPACE settings. (reported by David Wallin
180 * fixed some incompatibilities between SBCL's MOP and the MOP
182 ** the METAOBJECT class is now implemented;
183 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
184 STANDARD-OBJECT, as required;
185 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
186 now compatible (as required by VALIDATE-SUPERCLASS); there
187 remains a consistency requirement over the presence or absence
188 of the FUNCTION class in the superclass list of finalized
189 classes; see the manual for more details;
190 ** the :AROUND method for COMPUTE-SLOTS on
191 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
192 requested slot ordering.
194 ** bug fix: parent thread now can be gc'ed even with a live
196 ** bug fix: binding a special with PROGV to no value is not
197 the same as that symbol not having been bound (thanks to
199 ** bug fix: binding specials is thread safe (thanks to
201 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
202 and SB-SPROF do not die with 'no handler for signal XX in
203 interrupt_handle_now(..)' anymore
204 ** bug fix: WITH-TIMEOUT works with multiple running threads
205 * fixed some bugs revealed by Paul Dietz' test suite:
206 ** ENSURE-GENERIC-FUNCTION should take a method class object for
207 the :method-class keyword argument.
209 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
210 * new port: the Solaris operating system on x86 processors is now
211 mostly supported, though some rough edges in the environment
212 remain. (thanks to Daisuke Homma)
213 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
214 space for its heap. (thanks to Thiemo Seufer)
215 * optimization: SBCL on MIPS platforms now supports dynamic-extent
216 closures. (thanks to Thiemo Seufer)
217 * minor incompatible change: eof selects abort in the debugger.
218 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
219 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
221 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
222 deprecated, and will go away in a future revision of SBCL.
223 * minor incompatible change: GC-ON and GC-OFF are no longer
224 implemented with a counter, it does not matter how many times gc
225 is switched on or off
226 * bug fix: discriminating functions for generic function classes
227 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
228 make invalid assumptions about method precedence order. (reported
230 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
231 platforms. (thanks to Thiemo Seufer)
232 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
233 * bug fix: correct pathname printing with printer escaping is on.
234 (thanks to Kevin Reid)
235 * bug fix: complex VOP definitions in "user-space" no longer trigger
236 package locks. (reported by Zach Beane)
237 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
238 for funcallable-instance functions, and is no different from
240 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
241 characters in the current readtable. (reported by Nicholas Neuss)
242 * bug fix: SUBTYPEP on various CONS types returns more a more
243 accurate acknowledgment of its certainty.
244 * optimizations: REMOVE-DUPLICATES now runs in linear time on
245 lists in some cases. This partially fixes bug 384.
246 * flush all standard streams before prompting in the REPL and the
248 * bug fix: signal handling and triggering gc do not conflict
249 directly anymore, in particular a high frequency sb-sprof does
250 not prevent gc from running
251 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
252 approximation for timezone and DST information between the
253 universal time epoch and the smallest negative 32-bit time_t.
254 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
255 year 1899 so long as the encoded time is non-negative.
256 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
257 the correct answer for non-constant rotate amounts when performing
258 an inline 32-bit rotation.
260 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
261 there is only one thread in the session
262 ** bug fix: memory leak for streams created in one thread and
263 written to in another
264 ** bug fix: lockup when compiled with gcc4
265 ** bug fix: race that allows the gc to be triggered when gc is
267 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
268 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
270 ** bug fix: finished threads are gc'ed properly
271 * fixed some bugs revealed by Paul Dietz' test suite:
272 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
273 has arguments with a different set of applicable methods from
274 the orignal arguments.
275 ** The type error thrown by MAP now has a correct expected-type
277 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
278 name a compiled function.
279 ** Three MISC tests where a large bignum was improperly coerced to
280 a float that couldn't represent that bignum during type
281 derivation were fixed.
282 ** SUBTYPEP can now handle types involving the negation of a
283 list-form FUNCTION type.
284 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
285 as (COMPLEX (AND RATIO (NOT FIXNUM))).
286 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
288 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
289 * New feature: Experimental support for bivalent streams: streams
290 opened with :element-type :default now allow character and binary
291 (unsigned-byte 8) I/O
292 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
293 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
295 * bug fix: no more highly sporadic "couldn't check whether ~S is
296 readable" when reading a stream and an interrupt hits in the middle
297 of a select system call
298 * compiler better recognizes complex arrays (reported by Eduardo
300 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
301 for variables on SBCL built with linkage-tables. (reported by Luis
303 * various error reporting improvements.
304 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
305 (Thanks to Thiemo Seufer)
306 * bug fix: nested reader invokations work correctly
307 * bug fix: it is possible to have simultaneous references to foreign
308 code and foreign data with the same name.
310 ** added x86-64 support
311 ** incompatible change: the threading api now works with thread
312 objects instead of thread ids
313 ** bug fix: threads are protected from signals and interruption when
314 starting up or going down
315 ** bug fix: a race where an exiting thread could lose its stack to gc
316 ** bug fix: don't halt on infinite error in threads if possible
317 ** fixed numerous gc deadlocks introduced in the pthread merge
318 ** bug fix: fixed thread safety issues in read and print
319 ** bug fix: debugger doesn't hang on session lock if interrupted at
320 an inappropriate moment
321 ** bug fix: run-program is now thread safe(r)
322 ** bug fix: inner with-recursive-lock no longer releases the mutex
323 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
324 * fixed some bugs revealed by Paul Dietz' test suite:
325 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
326 EXPECTED-TYPE slots filled.
327 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
329 ** MAKE-CONDITION accepts classes as type-designators.
330 ** COMPILE may never return NIL.
331 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
332 range before calling Unix time functions
334 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
335 * numerous signal handling fixes to increase stability
336 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
337 * minor incompatible change: we now correctly canonize default
338 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
339 as per the MOP, rather than the historical (INITARG INITFUNCTION
340 INITFORM). (reported by Bruno Haible)
341 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
342 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
343 for more information.
344 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
345 pathname is a directory pathname.
346 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
347 * dynamic space size on PPC has been increased to 768Mb. (thanks to
349 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
350 :METACLASS argument in addition to a class name. (reported by
351 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
352 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
353 (reported by Bruno Haible; patch from Gerd Moellmann)
354 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
356 * bug fix: more cleanups to the floating point exception handling on
357 x86-64 (thanks to James Knight)
358 * bug fix: the compiler does not try to constant fold calls of
359 COERCE and BIT-* functions when they return freshly constructed
360 objects. (reported by Nikodemus Siivola and Paul Dietz)
361 * optimization: improved the MIPS versions of generic (in the
362 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
363 * optimization: direct conversion of (unsigned-byte 32) to floats on
364 the PowerPC platform.
365 * optimization: structure instances with raw slots now use less
366 memory, and probably show better memory locality. (thanks to
368 * optimization: DYNAMIC-EXTENT declarations for lists and closures
369 are treated as requests for stack allocation on the x86-64,
370 Alpha-32, PPC and SPARC platforms.
371 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
372 the wrong file descriptor; implementation of SOCKET-OPEN-P.
373 (thanks to Tony Martinez)
375 ** gcing a dead thread can no longer lead to lockups
376 ** threads block signals until they are set up properly
377 ** errno is no longer shared by threads
378 ** interrupt-thread restores the eflags register on x86
379 ** fixed some lockups due to gc/thread interaction
380 * fixed some bugs revealed by Paul Dietz' test suite:
381 ** invalid dotted lists no longer raise a read error when
383 ** signal an error if a symbol that names a declaration is used
384 as the name of a type, or vice versa
385 ** allow using the (declare (typespec var*)) abbreviation for
386 (declare (type typespec var*)) with all type specifiers
387 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
388 ** always return NIL from PPRINT-POP when OBJECT is NIL
389 ** don't signal errors when pretty-printing malformed LABELS,
390 FLET or MACROLET forms
391 ** declarations in a DOLIST body are also in scope for the
393 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
395 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
398 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
399 * fixed cross-compiler leakages that prevented building a 32-bit
400 target with a 64-bit host compiler.
401 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
402 opened with :IF-EXISTS :OVERWRITE.
403 * fixed bug 281: error for an invalid qualifier in a short-form method
404 combination method is not signalled until the faulty method is called.
405 * bug fix: iteration variable type inferrer failed to deal with open
406 intervals. (reported by Alan Shields)
407 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
408 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
409 or more runtime options were provided to the sbcl binary.
410 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
411 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
412 * optimization: there's now a fast-path for fixnum arguments in the
413 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
414 * optimization: the code generated on x86-64 is more compact thanks
415 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
416 * bug fix: floating-point exception handling now partly works on
417 x86-64. (Thanks to James Knight)
418 * improvement to the MIPS backend from Thiemo Seufer: C-style
419 64-bit long long arguments and return values to alien functions
421 * fixed some bugs revealed by Paul Dietz' test suite:
422 ** the type-error signalled from WARN has a filled-in DATUM slot.
423 ** the type-error required when a stream is not associated with
424 a file has the stream as its datum.
425 ** type-errors on single-floats on x86-64 no longer have
426 :INVALID-OBJECT as the datum
427 ** the type-errors signalled for invalid function names now have
428 a correct expected type
429 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
430 for structures defined with a :TYPE. Documentation strings for
431 typed structures are no longer immediately discarded
432 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
433 broadcast streams and synonym streams. FILE-LENGTH now also works
434 on broadcast streams.
436 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
437 * incompatible change: the --noprogrammer option, deprecated since
438 version 0.7.5, has been removed. Please use the equivalent
439 --disable-debugger option instead.
440 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
442 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
443 inoperational for a while now) has been completely removed.
444 * null lexical environments are now printed as #<NULL-LEXENV>,
445 significantly reducing the amount of clutter in typical backtraces.
446 * documentation on weak pointers, finalization, and after GC hooks
447 has been added to the manual.
448 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
449 as other specialized array types, is much faster. SUBSEQ and
450 COPY-SEQ on such arrays have also been sped up.
451 * optimization: EQL is now more efficient when at least other argument
452 is known to be of type (OR FIXNUM (NOT NUMBER)).
453 * fixed bug: the runtime is now less vulnerable to changes in the
454 size of the SBCL object on OS X, and virtual memory is reserved for
455 all spaces that need to be at a fixed address.
456 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
457 * fixed bug: finalizers and after GC hooks that cause consing are now
459 * fixed bug: compiler error messages and summaries are now printed to
460 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
461 * fixed inference of the upper bound of an iteration variable.
462 (reported by Rajat Datta).
463 * fixed bug 211e: calling local functions with duplicated constant
464 keyword argument no longer causes a bogus style warning about an
466 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
467 ftype declaration to be disregarded. (reported by Dave Roberts)
468 * fixed bug 373: caused by erronous compilation of references to alien
469 variables in the runtime on ppc/darwin.
470 * fixed bug 376: CONJUGATE type deriver.
471 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
472 (reported by Baughn on #lisp)
473 * a cross-compiler bug on non-x86 platforms has been identified and
474 fixed. (thanks to Bruno Haible)
475 * improvements to the MIPS runtime code for increased stability.
476 (thanks to Thiemo Seufer)
477 * increased the maximimum compact environment size to allow
478 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
479 * partial workaround for bug 135: don't name the function we're
480 calling for hairy cases of EVAL, so as not to accumulate one environment
481 entry per call to EVAL. (reported by Kevin Reid)
482 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
483 * optimization: type testing for non-vector arrays should be faster.
484 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
486 * bug fix: setting 31st element of a bit vector to zero did not work
488 * bug fix: redefining a class definition which failed due to a
489 previous accessor / function clash now works (but see BUGS entry
490 #380 for more problems in this area). (thanks to Zach Beane)
491 * the long form of DEFINE-METHOD-COMBINATION disables method group
492 checking when given a single method group with pattern *. (thanks
494 * on x86 compiler supports stack allocation of results of simple
495 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
496 * support for building and running on Mac OS X 10.4 "Tiger" has been added
497 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
498 * fixed some bugs related to Unicode integration:
499 ** the restarts for recovering from input and output encoding
500 errors only appear when there is in fact such an error to
502 * fixed some bugs revealed by Paul Dietz' test suite:
503 ** MISC.549 and similar: late transformation of unsafe type
504 assertions into derived types caused unexpected code
506 ** SCALE-FLOAT type deriver is less wrong.
507 ** type derivers for EXP, LOG and similar functions compute result
508 types for complex arguments better.
509 ** (MISC.563) CONJUGATE type deriver works for very restricted
511 ** out-of-line type testers for character strings are available.
512 ** EQUAL compiler transform understands specialness of objects
514 ** accessing double-floats stored on the stack now works on x86-64.
515 ** debugger internals could sometimes create invalid lispobjs,
516 resulting in GC crashes.
517 ** MISC.548: type check weakening can convert required type into
519 ** initialization forms for bindings are not in scope of free special
522 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
523 * incompatible change: thread support for non-NPTL systems has
524 been removed - locking is buggy and unreliable. A threaded
525 SBCL build will now warn at startup and refuse to create
526 new threads, unless futex support is detected in the kernel
527 * incompatible change: the top level REPL now has only an ABORT
528 restart associated with it, not TOPLEVEL and ABORT as it used to.
529 TOP and TOPLEVEL are now available as debugger commands for
530 returning to the top level.
531 * incompatible change: forms evaluated in the REPL now use the
532 global optimization policy.
533 * incompatible change: user- and system-initialization files are
534 no longer processed with LOAD, but by READ and EVAL; hence the
535 global optimization policy, startup package, readtable, etc,
537 * The .fasl file format number has been incremented because of
538 various incompatible changes.
539 * internal entry point details and argument counts no longer appear
540 in backtraces unless explicitly requested by setting
541 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
542 * built-in and standard functions no longer have names like "top
543 level local call to FOO".
544 * fixed bug 32: functions defined in non-null lexical environments
545 now have more legible printed representation
546 * fixed bug 33: functions defined in non-null lexical environemnts
547 are now more amenable to inspection by INSPECT.
548 * workaround for bug 354: XEPs no longer appear in backtraces unless
549 explicitly requested.
550 * fixed bug: receiving the signal which results from attempting to
551 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
552 SIGBUS on other *BSDs) on architectures where the C stack is also
553 the Lisp stack (x86 and x86-64) from foreign code no longer leads
554 to debugger confusion or wild instability. (reported by Cheuksan
556 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
557 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
558 (reported by Lutz Euler)
559 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
560 compiled code. (reported by Paul Dietz)
561 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
562 specialized parameter to a method to something that is not TYPEP
563 the specializer is now possible.
564 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
565 face of package deletion.
566 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
567 pathname. (reported by David Tolpin on c.l.l)
568 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
569 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
570 STRING-STREAM and FILE-STREAM, respectively.
571 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
572 than previously; in addition, its test suite is now run on build.
573 (thanks to Luke Gorrie)
574 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
575 * optimization: added a immediate representation for single-floats
577 * fixed some bugs revealed by Paul Dietz' test suite:
578 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
579 ** attempting to create a package with a colliding nickname causes
580 correctable errors to be signalled.
581 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
582 ** several x86-64 backend bugs related to sign-extension of immediate
585 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
586 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
587 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
589 * fixed loading of multiply forward-referenced layouts.
590 (thanks to Cheuksan Wang)
591 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
592 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
593 (see COMPILE-FILE documentation for details of :PRINT option)
594 * fixed bugs 19 and 317: fixed-format floating point printing is
595 more accurate. This also fixes a bug reported by Adam Warner
596 related to the ~@F format directive.
597 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
599 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
600 dispatch table if the from-char is a dispatch macro character.
601 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
602 by the wordsize no longer ignore the last word. (reported by Lutz
604 * fixed bug in type checking of dynamic-extent variables. (reported
606 * optimization: sequence traversal functions use their freedom to
607 coerce function designators to functions.
608 * optimization: code with many calls to CLOS methods specialized on
609 CLOS classes has had redundant type checks removed.
610 * optimization: added declarations to speed up operations that access
611 the internal character database (for example STRING-UPCASE)
612 * optimization: comparison operations between floats and sufficiently small
613 fixnums no longer create extra rationals
614 * fixed some bugs related to Unicode integration:
615 ** portions of multibyte characters at the end of buffers for
616 character-based file input are correctly transferred to the
617 start of the buffer at the next read.
618 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
619 passing it through to OPEN.
620 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
621 argument given to internal calls to OPEN.
622 ** the built-in comment readers (introduced by character sequences
623 ";" and "#|") are more forgiving to encoding errors; they will
624 STYLE-WARN and then attempt to resync the stream at a character
625 boundary. (thanks to Teemu Kalvas)
626 * fixed some bugs in the x86-64 port:
627 ** Negative short int return values from c-calls are sign-extended
629 ** The stack is aligned to 16-bytes for c-calls, as required by
630 the ABI. (thanks to Cheuksan Wang)
631 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
632 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
633 for enums. (thanks to Vincent Arkesteijn)
634 ** Multiple small optimizations and bugfixes for floating point
636 * fixed some bugs revealed by Paul Dietz' test suite:
637 ** Space, Tab, Linefeed, Return and Page have the invalid
638 secondary constituent character trait.
639 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
641 ** WITH-INPUT-FROM-STRING should only update the index place on
643 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
645 ** Bit-array operations (BIT-AND and similar) worked incorrectly
646 with one-dimensional arrays with fill pointers.
647 ** TYPE-OF failed on a complex with an integer realpart and a
649 ** compiler failure during type inference for the code of form
650 (IF (EQL X (THE ...)) ...) (MISC.535).
652 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
653 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
654 platform. The port supports 61-bit fixnums, large memory spaces
655 and reloading shared object files.
656 * enhancement: saving cores with foreign code loaded is now
657 supported on ppc/Darwin in addition to the previously supported
659 * enhancement: the statistical profiler now walks deeper into the
660 call stack for more meaningful call-graphs and accrued time
661 reports (x86/x86-64 only). It also now reports time spent in
663 * enhancement: it is now possible to trace most individual methods
664 of a generic function in addition to tracing the generic function
666 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
668 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
669 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
670 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
671 produces an error. (thanks to Vincent Arkesteijn)
672 * bug fix: NAMESTRING on pathnames with :WILD components in their
673 directories works correctly. (thanks to Artem V. Andreev)
674 * fixed bug 125: compiler preserves identity of closures. (reported
676 * bug fixed: functions with &REST arguments sometimes failed with
677 "Undefined function" when compiled with (DEBUG 3). (reported by
679 * bug fix: overflow during compiling of setting element of a bit
680 vector with constant index and value. (reported by Timmy Douglas)
681 * build fix: fixed the dependence on *LOAD-PATHNAME* and
682 *COMPILE-FILE-PATHNAME* being absolute pathnames.
683 * on x86 compiler partially supports stack allocation of dynamic-extent
685 * GO and RETURN-FROM do not check the extent of their exit points
686 when compiled with SAFETY 0.
687 * fixed some bugs related to Unicode integration:
688 ** encoding and decoding errors are now much more robustly
689 handled; it should now be possible to recover even from invalid
690 input or output to the terminal. (thanks to Teemu Kalvas)
691 ** provided a first cut at implementing STRING-TO-OCTETS and
692 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
693 ** altered the SB-MD5 contributed module slightly, changing the
694 interface just enough for it to be supportable for builds where
695 lisp characters are not eight bits.
696 * fixed some bugs revealed by Paul Dietz' test suite:
697 ** the FORMATTER-generated functions for ~V[ conditionals require
698 the correct number of arguments.
699 ** READ-FROM-STRING returns the mandated second value when applied
700 to displaced strings.
701 ** the #\Rubout and #\Backspace characters are treated as invalid
702 constituent characters by the tokenizer.
704 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
705 * new feature: reloading changed shared object files with
706 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
707 * new feature: references to foreign variables and functions
708 can now be compiled and loaded before the corresponding shared
709 object file is loaded, as long as the foreign definitions are
710 available at runtime.
711 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
712 supported. (thanks to Dan Debertin)
713 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
714 just keywords. (thanks to Vincent Arkesteijn)
715 * fixed bug #331: structure-class instances corresponding to
716 DEFSTRUCT forms are now created eagerly.
717 * fixed bug #345: backtraces from calls to undefined functions work
718 on x86 as well. Related bug #61 is now also partially fixed on x86
719 (backtraces from throws to unknown catch tags.)
720 * bug fix: lambda-list parsing is now stricter vrt. order and number
721 of lambda-list keywords.
722 * bug fix: as specified by AMOP, an error is signalled if a
723 class-option appears multiple times in a DEFCLASS form. (reported
725 * bug fix: RANDOM can be compiled when the compiler derives the type
726 of its numeric argument as a disjoint set of small integers.
727 (reported by Paul Dietz)
728 * bug fix: starting a core saved with shared objects loaded when
729 those objects are not available no longer causes threaded SBCL to
730 hang. (reported by Sean Ross)
731 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
733 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
734 argument, which must always be NIL. (reported by Kalle Niemitalo)
735 * bug fix: printing 1.0d+23 no longer results in an error.
736 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
737 * bug fix: structure slot setters preserve evaluation order. (thanks
739 * fixed some bugs related to Unicode integration:
740 ** RUN-PROGRAM can allow its child to take input from a Lisp
741 stream. (reported by Stefan Scholl)
742 ** ASDF-INSTALL successfully downloads .tar.gz files in all
743 locales. (reported by Ken Causey)
744 * fixed some bugs revealed by Paul Dietz' test suite:
745 ** INCF, DECF and REMF evaluate their place form as specified in
747 ** FORMATTER expands ~{ ~} iteration directives with V or #
748 parameters correctly.
749 ** FORMATTER deals with the ~@[ ~] conditional directive where the
750 consequent uses no arguments correctly.
751 ** the system has a partial understanding of the (COMPLEX RATIO)
753 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
756 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
757 * new feature: a build-time option (controlled by the :SB-UNICODE
758 keyword feature, enabled by default) for building the system with
759 support for the entire 21-bit character space defined by the
761 * new feature: the system now has rudimentary external-format
762 support; the primary user-visible change at this time is that
763 characters with the high bit set (such as lower-case-e-acute) will
764 print correctly to a terminal in a UTF-8 environment.
765 * minor incompatible change: BASE-CHAR no longer names a class;
766 however, CHARACTER continues to do so, as required by ANSI.
767 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
768 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
769 has been moved to the SB-EXT package (temporarily re-exported from
771 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
772 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
774 * fixed bug #351: better error-handlind and reporting for malformed
776 * fixed bug #350: bignum-printing is now more memory-efficient,
777 allowing printing of very large bignums, eg. (expt 2 10000000).
778 (reported by Bruno Haible)
779 * fixed bug #302: better primitive-type selection for intersection
781 * fixed bug #308: non-graphic characters now all have names, as
782 required. (reported by Bruno Haible)
783 * bug fix: redefining a class with different superclasses now correctly
784 removes it from the direct-subclasses of its previous superclasses.
785 (reported by David Morse)
786 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
787 new value now works. (reported by Bruno Haible)
788 * bug fix: correct canonicalization of multiple non-standard slot
789 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
790 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
791 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
792 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
793 now exists, an signals an error.
794 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
795 during macroexpansion for non-iteration variables as well. (reported
796 by Bruno Haible for CMUCL)
797 * bug fix: Cyclic structures and unprintable objects in compiler
798 messages no longer cause errors. (reported by Bruno Haible)
799 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
800 and READ-FROM-STRING all now return a primary value of NIL if
801 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
802 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
803 (reported by Bruno Haible for CMUCL)
804 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
805 do not designate a condition. (reported by Bruno Haible for
807 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
808 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
809 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
810 permitting resolution in favour of any of the conflicting symbols.
811 (reported by Bruno Haible for CMUCL)
812 * bug fix: EQUAL compiler optimizations is less aggressive on
813 strings which can potentially compare true despite having distinct
814 specialized array element types.
815 * bug fix: unit enumerations can be defined without dividing by
816 zero. (thanks to Vincent Arkesteijn)
817 * FORMAT compile-time argument count checking has been enhanced.
818 (report from Bruno Haible for CMUCL)
819 * a partial workaround for the bug 262: the compiler does not try to
820 inline-expand a local function doing RETURN-FROM from a deleted
821 BLOCK. (thanks to Peter Denno for the bug report and to David
822 Wragg for the simple test case)
823 * fixed some bugs revealed by Paul Dietz' test suite:
824 ** RENAME-PACKAGE allows all package designators as new package
826 ** constraint propagation and lambda variable substitution are
827 more cautious in dealing with partially deleted code.
828 ** compiler sometimes lost reoptimization passes.
829 ** CERROR, given a condition as condition designator, passes its
830 remaining arguments to the continue format control without
832 ** Case-altering FORMAT directives work correctly on non-ASCII
834 ** The REAL type specifier handles bounds outside the floating
835 point ranges without signalling FLOATING-POINT-OVERFLOW.
836 ** Functions with IR1-transformations can create intercomponent
837 references to global functions.
838 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
840 ** FORMAT ~R treats a nil value for its first parameter correctly.
842 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
843 * enhancement: saving cores with foreign code loaded is now
844 supported on x86/NetBSD and sparc/Linux in addition to the previously
846 * bug fix: on some platforms repeated installations caused multiple
847 copies of HTML documentation to be installed -- should not happen
848 any more. (reported by Stefan Scholl)
849 * bug fix: parsing self-recursive alien record types multiple times
850 no longer causes infinite recursion. (reported by Thomas F. Burdick,
851 original patch by Helmut Eller for CMUCL)
852 * bug fix: stack-exhaustion detection works now on NetBSD as well.
853 (thanks to Richard Kreuter)
854 * bug fix: defining classes whose accessors are methods on existing
855 generic functions in other (locked) packages no longer signals
856 bogus package lock violations. (reported by François-René Rideau)
857 * bug fix: special variables as DEFMETHOD parameters no longer have
858 associated bogus type declarations. (reported by David Wragg and
860 * bug fix: read-write consistency on streams of element-type
861 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
862 * bug fix: redefiniton of the only method of a generic function with
863 no DEFGENERIC no longer emits a full WARNING. In addition,
864 redefinition of generic functions with no DEFGENERIC to an
865 incompatible lambda list now signals an error. (thanks to Zach
867 * bug fix: DEFGENERIC now works even when there's a function of the
868 same name in an enclosing lexical environment. (thanks to Zach
870 * fixed compiler failure, caused by instrumenting code during
871 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
872 * optimization: added loop analysis and improved register allocation
873 * fixed some bugs revealed by Paul Dietz' test suite:
874 ** POSITION on displaced vectors with non-zero displacement
875 returns the right answer.
876 ** (SIMPLE-STRING) is a valid type specifier for sequence
878 ** *PRINT-LEVEL* handling for slotless structures is pedantically
880 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
881 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
883 ** The justification version of the FORMAT ~< directive treats
884 non-zero minpad parameter correctly.
886 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
887 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
888 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
889 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
890 the supported interface.
891 * new feature: Single-stepping of code compiled with DEBUG 2 or
892 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
893 * new feature: saving cores with foreign code loaded is now
894 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
895 Timothy Moore's work for CMUCL)
896 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
897 parameters to * instead of NIL if no initform is supplied.
898 (reported by Johan Bockgaard)
899 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
900 correctly when FUNCALL appears as the car of the form. Note:
901 despite this FUNCALL forms are not currently subject to
902 compiler-macro expansion. (port of Raymond Toy's fix for the
903 same from CMUCL, reported by Johan Bockgaard)
904 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
905 (thanks for Teemu Kalvas)
906 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
907 case instead of terminating the iteration (thanks for Julian
908 Squires, Sean Champ and Raymond Toy)
909 * bug fix: incorrect expansion of defgeneric that caused a style
910 warning. (thanks for Zach Beane)
911 * bug fix: slot accessor effective method computation works properly
912 for classes with multiple non-standard applicable methods on
913 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
914 * on x86 compiler supports stack allocation of results of LIST and
915 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
916 CMUCL implementation by Gerd Moellmann)
917 * fixed some bugs revealed by Paul Dietz' test suite:
918 ** FORMAT strings with both the ~<~:;~> form of the justification
919 directive and pretty-printing directives cause an error.
921 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
922 * incompatible change: the internal functions
923 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
924 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
925 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
926 instead of the old functions.
927 * new feature: on platforms where "dladdr" is available foreign
928 function names now appear in backtraces. (based on Helmut Eller's
930 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
931 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
933 * documentation: ASDF manual is now distributed with SBCL.
934 * bug fix: SBCL can now load its contributed modules with REQUIRE
935 even if the system-provided entries have been removed from
936 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
938 * bug fix: backtraces involving undefined functions or assembly
939 routines are more informative. (thanks to Brian Downing)
940 * bug fix: mutually referent alien structures now work correctly.
941 (reported by Rick Taube)
942 * bug fix: structures defined by WITH-ALIEN can be referred to
943 within other definitions in the same WITH-ALIEN.
944 * bug fix: division operators (MOD, TRUNCATE and the like) with
945 constant zero divisors and integer dividends no longer generate
947 * bug fix: provide default methods for INPUT-STREAM-P and
948 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
949 * bug fix: improve the detection and resolution of MOP metacycles
950 (where effective method computation depends on the generic function
951 having its effective method computed). (reported by Bruno Haible)
952 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
953 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
954 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
955 * bug fix: pathnames with relative directory components can be
956 represented relative to default pathnames.
957 * optimization: in taking the GCD of bignums, reduce the two bignums
958 to approximately the same size (using Euclid's algorithm) before
959 applying the more sophisticated binary GCD. (thanks to Juho
961 * optimization: COUNT on bitvectors now operates word-at-a-time.
962 * optimization: ASH with a positive, but not necessarily constant,
963 (leftwards) shift, when in a modular context, is compiled to a
965 * fixed some bugs revealed by Paul Dietz' test suite:
966 ** FORMAT variable parameters ("~V<char>") are defaulted properly
967 if the corresponding argument is NIL.
968 ** FORMAT directives accepting a minpad parameter treat negative
970 ** literal commas as character parameters to FORMAT directives are
972 ** literal spaces directly after ~<Newline> directives within a
973 format-logical-block (~:< ~@:>) do not induce :FILL-style
974 conditional newlines.
975 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
976 as specified: it no longer includes conditional newlines).
977 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
979 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
980 :PER-LINE-PREFIX argument does not evaluate to a string.
982 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
983 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
984 the manual for details; for now, package locks can be disabled by
985 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
986 if no major problems are found then it is likely that they will be
987 compiled in unconditionally.
988 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
989 unsupported operators on all platforms. To load a shared library
990 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
991 object file, link it into a shared library outside of SBCL and
992 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
994 * bug workaround: ROOM T and the GC were not working together
995 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
996 reporting facility aren't preserved. That reporting has been
997 disabled, so now until and unless someone figures out how to make it
998 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
999 * minor incompatible change: as threatened around sbcl-0.8.0, the
1000 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1001 The symbols are also exported from SB-PCL for backwards
1002 compatibility, but more so than before SB-PCL should be treated as
1003 an implementation-internal package.
1004 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1006 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1007 It is known as of this release not to work on the Alpha, however.
1008 * fixed bug #167: errors signalled due to illegal syntax in method
1009 bodies are now more legible.
1010 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1011 designators and can hence be used with TYPEP.
1012 * fixed bug #333: CHECK-TYPE now ensures that the type error
1013 signalled, if any, has the right object to be accessed by
1014 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1015 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1016 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1018 * fixed bug #334: programmatic addition of slots using specialized
1019 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1020 and :ALLOCATION :CLASS slots.
1021 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1022 float exponents. (rereported by Peter Seibel)
1023 * fixed a bug: #\Space (and other whitespace characters) are no
1024 longer considered to be macro characters in standard syntax by
1025 GET-MACRO-CHARACTER.
1026 * fixed bug: initialization of condition class metaobjects no longer
1027 causes an instance of the condition to be created. (reported by
1029 * fixed bug: it is now possible to have slots such that
1030 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1031 description is neither :INSTANCE nor :CLASS.
1032 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1033 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1034 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1035 non-standard SLOT-DEFINITION-ALLOCATION values.
1036 * fixed bugs: various race conditions handling exiting threads.
1037 CL-PPCRE's thread torture test now passes.
1038 * fixed arguably-a-bug: GC time proportional to number of threads in
1039 system even when most of them are idle
1040 * optimization: improved performance of BIT and SBIT on bit-vectors.
1041 * .fasl file incompatibility: The fasl file version number has
1042 been incremented because of changes associated with package locks.
1044 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1045 * minor incompatible change: the system no longer provides
1046 optimization hints (conditions which are TYPEP
1047 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1048 mode; these hints are still emitted when higher SPEED optimization
1050 * new contrib module: a sampling profiler (profiling by statistical
1051 sampling, rather than by instrumenting functions) is available as
1052 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1053 * the behaviour of the standard function ED is now customizeable by
1054 third parties through a hook variable: see ED's documentation
1055 string for information on the protocol.
1056 * the compiler no longer emits efficiency notes for (FUNCALL X)
1057 when the type of X is uncertain under default optimization
1059 * fixed bug 276: mutating a binding of a specialized parameter to a
1060 method to something that is not TYPEP the specializer is now
1062 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1063 exhibit the required behaviour on the x86 platform. (thanks to
1064 Peter van Eynde, Eric Marsden and Bruno Haible)
1065 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1066 even for difficult arguments. (reported by Peter Graves)
1067 * fixed bug 141a: the backquote printer now descends quoted
1069 * fixed another bug in backquote printing: no more destructive
1070 modification of the form's list structure. (reported by Brian
1072 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1073 move between its address being taken and the call to
1074 interrupt_thread, fixing a crashing race condition.
1075 * the SB-POSIX contrib implementation has been adjusted so that it
1076 no longer exhibits ridiculously poor performance when constructing
1077 instances corresponding to C structs.
1079 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1080 * minor incompatible change: the sb-grovel contrib now treats C
1081 structures as alien (in the sense of SB-ALIEN) objects rather than
1082 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1083 has implications for memory management of client code
1084 (sb-grovel-returned objects must now be manually managed) and for
1085 type safety (alien objects now have full types).
1086 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1087 used to control emission of compiler diagnostics, rather than the
1088 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1089 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1090 quality should be considered deprecated.
1091 * install.sh now installs the user manual as well
1092 * (not quite a new documentable feature, but worth considering in
1093 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1094 beginnings of a semantically meaningful condition hierarchy is
1095 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1097 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1098 designator as the defaults argument.
1099 * fixed bug: Displaced arrays whose displaced-to array has become
1100 too small now cause ARRAY-DIMENSION to signal an error, providing
1101 for safer bounds-checking. (reported by Bruno Haible)
1102 * fixed bug: DEFCLASS slot definitions with identical :READER and
1103 :WRITER names now signal a reasonable error. (reported by Thomas
1105 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1107 * fixed bug: Invalid slot specification errors now print correctly.
1108 (thanks to Zach Beane)
1109 * fixed bug 320: Shared to local slot value transfers in class
1110 redefinitions now happen corrently from superclasses as
1111 well. (reported by Bruno Haible)
1112 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1114 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1115 improper lists correctly. (reported by Bruno Haible)
1116 * fixed bug 313: source-transform for <fun-name> was erroneously
1117 applied to a call of a value of a variable with name <fun-name>.
1118 (reported by Antonio Menezes Leitao)
1119 * fixed bug 307: The obsolete instance protocol ensures that
1120 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1121 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1122 remove dead unknown-values globs from the middle of the stack.
1123 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1124 easier to resume long computations after using *BREAK-ON-SIGNALS*
1125 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1126 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1127 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1128 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1129 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1130 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1132 * fixed a (fairly theoretical) bug in string printing: if
1133 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1134 does not have array-element-type equal to the most general string
1136 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1137 function name. (thanks to Nikodemus Siivola)
1138 * fixed bug: compile-time format string checker failed on
1139 non-closed ~{. (reported by Thomas F Burdick)
1140 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1141 don't warn on legal loop code involving more than one aggregate
1142 boolean. (thanks to Nikodemus Siivola)
1143 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1144 in keyword position to MAKE-PACKAGE was not being reported as
1146 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1147 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1149 * fixed bugs 280 and 312: the checking for multiple definitions in a
1150 file is less likely to become confused by uses of inline
1152 * fixed bug: the #S reader macro performs the keyword coercion
1153 specified for slot names. (reported by Kalle Niemitalo)
1154 * fixed bug: lambda lists may contain symbols whose names start with
1155 & but are not lambda-list-keywords; their occurrence triggers a
1157 * fixed bug 321: define-method-combination argument lambda lists do
1158 not cause invalid code to be generated when &optional or &aux
1159 variables have default values. (reported by Bruno Haible)
1160 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1161 have CLOS classes; this appears also to have fixed reported
1162 instability in stack exhaustion detection.
1163 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1164 MUFFLE-WARNING when no associated restart is present is now
1166 * optimization: rearranged the expansion of various defining macros
1167 so that each expands into only one top-level form in a
1168 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1170 * optimization: used a previously little-used slot in symbols to
1171 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1173 * fixed some bugs revealed by Paul Dietz' test suite:
1174 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1176 ** Fixed an optimization bug related to inheritance of initforms
1177 from local to shared slots.
1178 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1179 ** CAST optimizer forgot to flush argument derived type.
1180 ** print/read consistency on floats is now orders of magnitude
1181 more likely. (thanks also to Bruno Haible for a similar report
1183 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1184 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1185 for objects of type REAL. Make it so.
1186 ** SXHASH is specified (infelicitously) to respect similarity,
1187 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1188 it so. (thanks to Markus Ziegler)
1189 ** on the Alpha, the compiler succeeds in compiling functions
1190 returning a known number of arguments greater than 63.
1191 ** fixed handling of invalid NIL arguments in keyword position
1193 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1195 ** provided a readably-printable representation for RANDOM-STATE
1197 ** ensured that pathnames, where they have a namestring, always
1198 print using #P"..." syntax.
1200 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1201 * Support for the forthcoming 2.0 version of the NetBSD kernel
1202 running on x86 hardware has been added. (thanks to Perry
1203 E. Metzger most immediately, and others for their past work)
1204 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1205 current release version; SBCL's OpenBSD support had been broken
1206 since about the time of OpenBSD's switch to ELF binary format.)
1207 * [placeholder for DX summary]
1208 ** user code with &REST lists declared dynamic-extent, under high
1209 speed or space and low safety and debug optimization policy.
1210 * The manual has been converted to Texinfo format and the debugger
1211 chapter from the cmucl manual has been added.
1212 * A facility has been added to extract documentation strings from
1213 sbcl and store them as Texinfo-formatted snippets for inclusion in
1214 the manual (via Texinfo's @include directive)
1215 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1216 the test case to Dave Roberts)
1217 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1218 pointers. (reported by Sean Ross)
1219 * bug fix: PROFILE output is printed nicely even for large numerical
1220 values. (thanks to Zach Beane)
1221 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1222 greater than 32 handle EOF correctly.
1223 * bug fix: on X86 an immediate argument of the IMUL instruction is
1224 correctly printed in disassembly. (thanks to Lutz Euler)
1225 * bug fix: class slots in redefined classes preserve their old
1226 values. (thanks to Bruno Haible and Nikodemus Siivola)
1227 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1228 succeeds. (reported by Marco Baringer)
1229 * fixed some bugs revealed by Paul Dietz' test suite:
1230 ** READ-SEQUENCE now works on ECHO-STREAMs.
1231 ** RATIONALIZE works more according to its specification. (thanks
1234 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1235 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1236 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1237 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1238 should matter to you only if you rebind the printer control
1239 variables and then find you want different bindings in the
1240 debugger than in the ordinary execution of your program.)
1241 * The runtime build system has been tweaked to support building
1242 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1243 assembler and linker. (thanks to Nikodemus Siivola)
1244 * Unbound, undefined, undeclared variables now trigger full
1245 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1246 more often programmer error than deliberate exploitation of undefined
1248 * optimization: the hash algorithm for strings has changed to one
1249 that is less vulnerable to spurious collisions. (thanks to Juho
1251 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1252 needless bounds checking. (thanks to Juho Snellman)
1253 * optimization: implemented multiplication as a modular
1254 (UNSIGNED-BYTE 32) operation on the PPC backend.
1255 * fixed some bugs revealed by Paul Dietz' test suite:
1256 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1258 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1259 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1260 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1262 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1264 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1266 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1267 their output stream on EOF from read.
1268 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1269 have been read to end-of-file.
1270 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1272 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1273 description of determination of which consecutive characters
1275 ** Printing the "Space" character with escaping on now yields "#\\ ",
1276 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1277 ** Reading floating-point numbers with *READ-BASE* set to a number
1278 less than 10 works correctly.
1279 ** Reading floating-point numbers with *READ-BASE* set to a number
1280 more than 10 works correctly.
1281 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1282 the readtable currently in effect.
1284 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1285 * minor incompatible change: parsing of namestrings on a physical
1286 (Unix) host has changed; numbers after the final #\. in a
1287 namestring are no longer interpreted as a version field. This is
1288 intented to be largely invisible to the user, except that the
1289 meaning of the namestring "*.*.*" has changed: it now refers to a
1290 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1291 should usually be replaced by
1292 (make-pathname :name :wild :type :wild :version :wild)
1293 with the added benefit that this is more likely to be portable.
1294 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1295 option to OPEN now signals an error if the file being opened
1296 exists; this may have an impact on existing code.
1297 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1298 signals received, on the PowerPC platforms (both Linux and
1299 Darwin). (thanks to Pierre Mai for pointing out the location of
1301 * several fixes on OS X: The system now builds and runs cleanly on
1302 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1303 (thanks to Brian Mastenbrook)
1304 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1305 second-resolution: integer multiples of 1/3600 between -24 and 24.
1306 (thanks to Vincent Arkesteijn)
1307 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1308 type when called with 1 argument; PEEK-CHAR checked type of
1309 PEEK-TYPE only after having read first character from a
1310 stream. (reported by Peter Graves)
1311 * bug fix: the garbage collector now has much better locality
1312 behaviour, and in particular no longer treats all memory as being
1313 exhausted when many small objects point to each other in a deeply
1315 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1316 recognized as being TYPEP their class.
1317 * bug fix: the PUSHNEW documentation string has been corrected.
1318 (thanks to Vincent Arkesteijn)
1319 * bug fix: defaulting of the value for the last of an atypically
1320 large number of multiple values being bound was not being
1321 performed correctly on the Alpha or PPC platforms
1322 * optimization: implemented multiplication as a modular
1323 (UNSIGNED-BYTE 32) operation on the x86 backend.
1324 * optimization: SEARCH on simple-base-strings can now be open-coded.
1325 (see also contrib/compiler-extras.lisp for inspiration for
1326 teaching the compiler about the Boyer-Moore algorithm).
1327 * value, returned by MAX (and MIN) called with several EQUALP, but
1328 not EQL, arguments now does not depend on compiler settings.
1329 * fixed some bugs revealed by Paul Dietz' test suite:
1330 ** in stack analysis liveness information is propagated from
1331 non-local entry points.
1332 ** pathwise CAST removing failed when the CAST node did not start
1334 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1335 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1337 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1338 host is already defined.
1339 ** RENAME-FILE works on streams instead of signalling an internal
1341 ** PEEK-CHAR uses the current readtable when determining whether
1342 or not a character is whitespace.
1343 ** MERGE-PATHNAMES handles the case when the pathname does not
1344 specify a name while the default-pathname specifies a version.
1345 ** Pathnames now stand a better chance of respecting print/read
1347 ** Attempting to use standardized file system operators with a
1348 pathname with invalid :DIRECTORY components signals a
1350 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1352 ** DIRECTORY on logical pathnames is more correct.
1353 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1354 signal a TYPE-ERROR if their argument is not a stream.
1355 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1356 designator argument does not designate a stream.
1357 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1358 examining the synonym.
1359 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1361 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1362 element-type larger than ([UN]SIGNED-BYTE 32).
1364 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1365 * When built with the :SB-FUTEX feature, threaded builds now take
1366 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1367 for faster/more reliable mutex and condition variable support.
1368 * Incompatible change (but one you probably shouldn't have been using
1369 anyway): the interface and code for arbitrating between multiple
1370 threads in the same user session has been redesigned.
1371 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1372 error when called without an explicit environment argument.
1373 (thanks to Nikodemus Siivola)
1374 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1375 confused about their position. (thanks to Adam Warner and Gerd
1377 * bug fix: Pretty printing backquoted forms with unquotations in the
1378 argument list position of various code constructs such as LAMBDA
1379 now works correctly. (reported by Paul Dietz)
1380 * bug fix: Pretty printing unquotations no longer loses all
1381 stream position information.
1382 * optimization: performance of string output streams is now less
1383 poor for multiple small sequence writes.
1384 * optimization: performance of CSUBTYPEP in the presence of complex
1385 expressions involving CONS and NOT many times has been improved.
1386 (reported by Paul Dietz)
1387 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1389 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1390 streams for the REPL, for the debugger, and so on. (thanks to
1392 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1393 * fixed some bugs revealed by Paul Dietz' test suite:
1394 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1395 is ignored if it is too small, rather than propagating through
1396 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1397 ** extremely complex negations of CONS types were not being
1398 sufficiently canonicalized, leading to inconsistencies in
1400 ** VALUES tranformer lost derived type.
1402 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1403 * fixed a bootstrapping bug: the build process no longer assumes
1404 that the various BOOLE-related constants have the same value in
1405 host and target lisps. (noted by Paul Dietz' test suite on an
1406 SBCL binary built from CLISP)
1407 * The system can now be dynamically linked on the MIPS platform,
1408 which enables dynamic loading of foreign code from Lisp. (thanks
1409 to Ralf Baechle for discussions on the MIPS ABI)
1410 * The system now records debugging information for its own source
1411 files in a filesystem-position-independent manner, relative to
1412 the "SYS" logical host.
1413 * fixed a compiler bug: MV-LET convertion did not check references
1414 to the "max args" entry point. (reported by Brian Downing)
1415 * tweaked disassembly notes to be less confident about proclaiming
1416 some instruction as an LRA. (thanks to Brian Downing)
1417 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1418 now each have their own history, command character, and other
1419 characteristics. (thanks to David Lichteblau)
1420 * fixed some bugs revealed by Paul Dietz' test suite:
1421 ** compiler failure in compiling LOGAND expressions including a
1423 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1424 shift greater than 32.
1425 ** FLUSH-DEST did not mark blocks for type check regeneration.
1426 ** HANDLER-CASE failed to accept declarations in handler clauses
1427 in some circumstances.
1429 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1430 * New code in contrib/sb-introspect (still probably not entirely
1431 stable yet) provides some support for smart Lisp development
1432 environments like SLIME.
1433 * The conditions signalled for errors occurring when loading .fasl
1434 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1435 in a way which should help ASDF recover gracefully.
1436 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1437 stuff has been cleaned up. If you code contrib/ stuff, this might
1438 affect you, and you can look at contrib/README, contrib/STANDARDS,
1439 and/or the 0.8.4.27 diff to check.
1440 * In full calls the compiler now does not generate checks for declared
1441 argument types for all arguments.
1442 * various threading fixes
1443 ** and some experimental patches which didn't make it into
1444 the main tree for this release, but which are shipped in
1445 contrib/experimental-thread.patch as a possible fix for some
1446 failures (deadlock, spinning...) in GC-intensive multithreaded
1448 * fixed PPC build problem (source code incompatibility of different
1449 library versions): added offsetof() hackery which attempts to divine
1450 where glibc maintainers put uc_mcontext today
1451 * fixed bug 282: compiler does not trust type assertions while passing
1452 arguments to a full call.
1453 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1454 &OPTIONAL VALUES type parameter.
1455 * fix bug 214: algorithm for noting rejected templates is now more
1456 similar to that of template seletion. (also reported by rydis on
1458 * fixed bug 141b: printing backquoted information readably and prettily
1459 inserts a space where necessary.
1460 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1461 (CHARACTER 10) are now reported as errors, rather than propagated
1462 as unknown types. (reported by piso on #lisp)
1463 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1464 with values NIL and :ERROR. (thanks to Milan Zamazal)
1465 * fixed bug 191c: CLOS now does proper keyword argument checking as
1466 described in CLHS 7.6.5 and 7.6.5.1.
1467 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1468 longer raise an error; further, using a list as a for-as-arithmetic
1469 counter now raises a meaningful error.
1470 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1471 now understood by sequence creation functions such as MAKE-SEQUENCE
1473 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1474 a STRING-INPUT-STREAM.
1475 * compiler enhancement: SIGNUM is now better able to derive the type
1477 * type declarations inside WITH-SLOTS are checked. (reported by
1479 * fixed some bugs revealed by Paul Dietz' test suite:
1480 ** incorrect optimization of TRUNCATE for a positive first
1481 argument and negative second.
1482 ** compiler failure in let-convertion during flushing dead code.
1483 ** compiler failure while deriving type of TRUNCATE on an
1484 interval, containing 0.
1485 ** ASH of a negative bignum by a negative bignum count now returns
1487 ** intersection of CONS types now canonicalizes properly, fixing
1488 inconsistencies in SUBTYPEP.
1490 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1491 * incompatible change: The --disable-debugger command line
1492 option now clobbers the debugger at a more fundamental
1493 level, by redefining #'INVOKE-DEBUGGER instead of by
1494 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1495 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1496 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1497 enter the debugger REPL and then suffer recursive errors
1498 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1499 while under the new system, BREAK in --disable-debugger mode
1500 terminates the system just as an unhandled error would.
1501 * fixed compiler performance when processing loops with a step >1;
1502 * bug fix: DOCUMENTATION now retrieves generic function
1503 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1504 support has been systematized, and now supports the methods
1505 specified by ANSI, along with a default method and a method for
1506 slot documentation. (reported by Nathan Froyd)
1507 * bug fix: effective methods associated with a generic function are
1508 no longer cached over a change of that generic function's method
1509 combination. (reported by Andreas Fuchs)
1510 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1511 names a non-existent directory. (thanks to Andreas Fuchs)
1512 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1513 the PPC platform, lead to stack corruption; this has been fixed.
1514 (reported by Rainer Joswig)
1515 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1516 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1517 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1518 arithmetic in general, is now much more reliable on the PPC
1520 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1521 platform now returns the right answer.
1522 * optimization: restored some effective method precomputation in
1523 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1524 precomputation is now tunable.
1525 * optimization: compiler-internal data structure use has been
1526 reviewed, and changes have been made that should improve the
1527 performance of the compiler by about 20%.
1528 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1529 simple-base-strings and simple-bit-vectors is improved.
1530 * optimization: the optimization of 32-bit logical and arithmetic
1531 functions introduced in version 0.8.3 on the x86 has been
1532 implemented on the mips, ppc and sparc platforms; an
1533 implementation of the same facility, but for 64-bit arithmetic,
1534 has been added for the alpha.
1535 * microoptimization: the compiler is better able to make use of the
1536 x86 LEA instruction for multiplication by constants.
1537 * bug fix: in some situations compiler did not report usage of
1538 generic arithmetic in (SPEED 3) policy.
1539 * bug 145b fix: compiler used wrong type specifier while converting
1540 MEMBER-types to numeric.
1541 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1543 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1544 index argument now works properly on the Alpha platform.
1545 * bug fix: floating point exception treatment on the Alpha platform
1547 * bug fix: FILE-POSITION works much better on string input and
1548 output streams. (thanks to Nikodemus Siivola)
1549 * bug fix: many threading/garbage collection symptoms sorted.
1550 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1551 might be pseudo-atomic.
1552 * internal change: Stopping for GC is now done with signals not
1553 ptrace. GC is now done in whichever thread wanted it, instead of
1555 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1557 * bug fix: result form in DO is not contained in the implicit
1559 * incompatible change: ICR structure is changed; the value part of
1560 CONTINUATION is now called LVAR; corresponding functions are
1561 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1562 * added type deriver for ISQRT (thanks to Robert E. Brown).
1563 * bug fix: better support for loading from the command line when an
1564 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1566 * fixed some bugs revealed by Paul Dietz' test suite:
1567 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1568 ** ROUND and FROUND now give the right answer when given very
1569 small float arguments.
1570 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1572 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1573 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1574 ** LCM should return a non-negative integer.
1575 ** PARSE-INTEGER returned the index of a terminator instead of the
1576 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1577 ** PARSE-INTEGER returned an incorrect index being applied to a
1579 ** LCM with two arguments of 0 returns 0 rather than signalling
1581 ** unsigned addition of a 32-bit constant with the high bit set no
1582 longer causes an internal compiler error on the x86.
1583 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1584 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1585 with negative last argument.
1586 ** byte specifiers with zero size and position no longer cause
1587 an error during type derivation.
1588 ** bignum multiplication on the Alpha platform now returns the
1590 * porting: The system now builds on SuSE AMD64, although it still
1591 generates a 32-bit binary.
1592 * .fasl file incompatibility: The fasl file version number has
1593 been incremented (because of the changes to internal compiler
1594 data structures referred to above).
1596 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1597 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1598 more accurately, on the Darwin kernel running on PowerPC hardware.
1599 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1600 * Compiler code deletion notes now signal a condition of type
1601 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1602 an associated MUFFLE-WARNING restart.
1603 * The compiler now performs limited argument count validation of
1604 constant format strings in FORMAT, and where appropriate in ERROR,
1605 CERROR and WARN. (thanks to Gerd Moellmann)
1606 * New ASDF-INSTALL contrib can be used for automatic download and
1607 installation of third-party Lisp code from CCLAN or other sites
1609 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1610 which forces another thread to execute a function supplied by the
1612 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1613 now accept and act upon their :ELEMENT-TYPE keyword argument.
1614 (reported by Martin Atzmueller, Edi Weitz)
1615 * bug fix: FILE-POSITION now accepts position designators up to
1616 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1617 is the greater. (thanks to Patrik Nordebo)
1618 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1619 Kalle Olavi Niemitalo)
1620 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1621 printable. (reported by Eric Marsden)
1622 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1623 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1624 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1625 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1626 (thanks to Stig Sandoe)
1627 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1628 UNREAD-CHAR now correctly includes the unread character in the
1629 target sequence. (thanks to Gerd Moellmann)
1630 * bug fix in threaded builds: the system can now be suspended and
1631 resumed by shell job control with minimal disruption.
1632 * bug fixes in times and timezones >2038AD
1633 * better handling of "where is GNU make?" problem in build scripts
1634 (thanks to Nikodemus Siivola)
1635 * new optimization: inside a named function any reference to a
1636 function with the same name is considered to be a self-reference;
1637 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1638 optimization quality.
1639 * new optimization on x86: logical functions and + now have
1640 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1641 used when the result is truncated to 32 bits.
1642 * VALUES declaration is partially enabled.
1643 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1644 * fixed some bugs revealed by Paul Dietz' test suite:
1645 ** The system now obeys the constraint imposed by
1646 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1647 types form a lattice under type intersection.
1648 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1649 ** ASSOC now ignores NIL elements in an alist.
1650 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1651 and (1+ MOST-POSITIVE-FIXNUM) answers.
1652 ** The addition of a method with invalid qualifiers to a generic
1653 function does not cause an error to be signalled immediately;
1654 a warning is signalled, and the error is generated only on
1655 calling the generic function.
1656 * changed .fasl file version number, in part to add type codes for
1657 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1658 obscure ANSI requirements
1660 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1661 * fixed bug 148: failure to inline-expand a local function left
1662 garbage, confusing the compiler.
1663 * fixed bugs 3cd: structure slot readers perform type check if the
1664 slot can have an invalid value (i.e. it is either not initialized
1665 or can be written with a less specific slot writer).
1666 * bug fix: the compiler now traps array references to elements off
1667 the end of an array; previously, the bounds checking in some
1668 circumstances could go off-by-one.
1669 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1671 * type declarations for array element types now obey the description
1672 on the CLHS page "Declaration TYPE", as per discussions on
1673 sbcl-help around 2003-05-08. This means that a declaration
1674 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1675 declaration, all references to BAR will be asserted or assumed
1676 (with THE, so dependent on compiler policy) to involve objects of
1677 type FOO. Note that no such declaration is implied in
1678 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1679 * declared types of functions from the "Conditions"
1680 chapter. (reported by Paul Dietz)
1681 * bug fix: CERROR accepts a function as its first argument.
1682 * bug fix: NTH an NTHCDR accept a bignum as index
1683 arguments. (reported by Adam Warner)
1684 * optimization: character compare routines now optimize comparing
1685 against a constant character. (reported by Gilbert Baumann)
1686 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1687 argument now works properly on the MIPS platform.
1688 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1689 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1690 declared to have a functional type, does not cause an error
1692 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1693 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1694 * fixed bug: if last continuation of a deleted block has a
1695 destination, this destination should be deleted too. (reported by
1697 * fixed a bug in the bootstrap process: the host compiler's values
1698 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1699 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1700 test case from Patrik Nordebo)
1701 * improved the ability of the disassembler on the PPC platform to
1702 provide helpful disassembly notes.
1703 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1704 the class in more cases than previously.
1705 * bug fix: FILE-POSITION now understands :START and :END for
1706 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1707 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1708 8) data. (thanks to David Lichteblau)
1709 * bug fix: it is possible to add a method to a generic function
1710 without lambda list.
1711 * bug fix: reader failed to signal END-OF-FILE inside an
1712 object representation. (reported by Nikodemus Siivola)
1713 * fixed some bugs revealed by Paul Dietz' test suite:
1714 ** LAST and [N]BUTLAST should accept a bignum.
1715 ** condition slot accessors are methods.
1716 ** (VECTOR NIL) is a subtype of STRING.
1718 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1719 * minor incompatible change: some nonsensical specialized lambda
1720 lists (used in DEFMETHOD) which were previously ignored now signal
1722 * minor incompatible change: the system is now aware of the types of
1723 variables in the COMMON-LISP package, and will signal errors for
1724 most violations of these type constraints (where previously they
1725 were silently accepted).
1726 * minor incompatible change: COMPILE-FILE now uses the freedom
1727 afforded (ANSI 3.2.2.3) to use derived function types for
1728 functions defined in the same file. This also permits the system
1729 to warn on static type mismatches and function
1730 redefinition. (Currently it does not work with high DEBUG level.)
1731 * minor incompatible change: VALUES declaration is disabled.
1732 * When issuing notes, the compiler now signals a condition of type
1733 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1734 restart for use in user handlers. It is expected that the
1735 COMPILER-NOTE condition will eventually become a condition
1736 supertype to a hierarchy of note types, which will then be
1737 handleable in a similar fashion. However, at the moment, no such
1738 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1739 but it's an implementation detail, not a classification for the
1741 * Changes in type checking closed the following bugs:
1742 ** type checking of unused values (192b, 194d, 203);
1743 ** template selection based on unsafe type assertions (192c, 236);
1744 ** type checking in branches (194bc).
1745 * A short form of VALUES type specifier has ANSI meaning (it has
1746 increased the number of situations when SBCL cannot perform type
1748 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1749 keywords or constants is permissible.
1750 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1751 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1752 classes. (thanks to Antonio Martinez)
1753 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1754 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1755 argument to a pretty-print stream. Instead, it leaves any such
1756 operations to DESCRIBE-OBJECT methods.
1757 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1759 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1760 lambda lists. (thanks to David Lichteblau)
1761 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1762 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1763 (thanks to Gerd Moellmann)
1764 * fixed bug 246: increased compilation speed of long
1765 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1767 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1769 * DEFCONSTANT now throws a condition of type
1770 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1771 constant to a non-EQL value; CONTINUE and ABORT restarts
1772 respectively change and preserve the value.
1773 * fixed bug 63: The code walker, part of the implementation of CLOS,
1774 is now better at handling symbol macros.
1775 * bug fix: There is no longer an internal implementation type named
1776 CL:LENGTH. (reported by Raymond Toy)
1777 * bug fix: In macro-like defining macros/special operators the
1778 implicit block does not enclose the lambda list.
1779 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1780 enclosed in parentheses) are not suitable as type specifiers, and
1781 their use properly signals an error now.
1782 * bug fix: An argument count mismatch for a type specifier in code
1783 being compiled no longer causes an unhandled error at compile
1784 time, but signals a compile-time warning.
1785 * fixed simple vector readable printing
1786 * bug fix: DESCRIBE takes more care over whether the class
1787 precedence list slot of a class is bound before accessing it.
1788 (reported by Markus Krummenacker)
1789 * bug fix: FORMATTER can successfully compile pretty-printer format
1790 strings which use variants of the ~* directive inside.
1791 * bug fix: SEARCH now applies its TEST predicate to the elements of
1792 the arguments in the correct order. (thanks to Wolfhard Buss)
1793 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1794 in type inference. (thanks to Robert E. Brown)
1795 * bug fix: Reading in symbols with an explicit package name of ""
1796 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1797 * fixed some bugs revealed by Paul Dietz' test suite:
1798 ** NIL is now allowed as a structure slot name.
1799 ** Arbitrary numbers, not just REALs, are allowed in certain
1800 circumstances in LOOP for-as-arithmetic clauses.
1801 ** Multiple class redefinitions before slot access no longer
1802 causes a type error.
1803 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1804 association between the name and a class.
1805 ** Generic functions with non-standard method-combination and over
1806 five methods all of which return constants no longer return NIL
1807 after the first few invocations. (thanks to Gerd Moellmann)
1808 ** CALL-NEXT-METHOD with no arguments now passes the original
1809 values of the arguments, even in the presence of assignment.
1810 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1812 ** DISASSEMBLE works with closures and funcallable instances.
1813 ** ADD-METHOD now returns the generic function, not the new method.
1814 ** FIND-METHOD signals an error if the lengths of the specializers
1815 is incompatible with the generic function, even if the ERRORP
1817 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1818 which its argument is a member.
1819 ** DEFCLASS only redefines the class named by its class-name
1820 argument if that name is the proper name of the class;
1821 otherwise, it creates a new class.
1822 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1823 of the UNBOUND-SLOT condition to the name of the slot.
1824 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1825 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1826 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1827 SLOT-MAKUNBOUND in the specified fashion.
1829 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1830 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1831 cross-compilation host. As a consequence, we can now bootstrap our
1832 way up to SBCL starting with a bare gcc toolchain and human-readable
1833 source code (first the source to CLISP, then the source to SBCL).
1834 * A contributed module containing a partial implementation of the
1835 simple-streams interface has been included. (thanks to Rudi
1837 * A contributed module implementing the RFC1321 Message Digest
1838 Algorithm, known as MD5, has been included.
1839 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1840 no longer has any effect, as the code controlled by this feature
1841 has been deleted. (As far as we know, no-one has ever built using
1842 this feature, and its semantics were confused in any case).
1843 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1844 work on conditions (as required by the ANSI specification),
1845 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1846 expected behaviour on conditions. Users should note, however,
1847 that such behaviour is not required by the ANSI specification,
1848 and so use of this behaviour may render their code unportable.
1849 * fixed some bugs revealed by Paul Dietz' test suite:
1850 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1852 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1853 ** SXHASH on condition objects no longer returns NIL.
1854 ** :ALLOCATION :CLASS slots are better treated; their values are
1855 updated on class redefinition, and initforms inherited from
1856 superclasses are applied.
1857 ** REMOVE-METHOD returns its generic function argument even when
1858 no method was removed.
1859 ** SHARED-INITIALIZE now initializes the values of the requested
1860 slots, including those with :ALLOCATION :CLASS.
1861 ** ALLOCATE-INSTANCE now works on structure classes defined via
1862 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1864 ** SLOT-EXISTS-P now works on conditions, as well as structures
1866 ** MAKE-LOAD-FORM now has the required methods on
1867 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1868 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1869 keyword, and now implements the SLOT-NAMES argument.
1870 ** methods with &OPTIONAL arguments no longer allow too many
1871 arguments to be passed in the call without error.
1872 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1873 option is consistent with the required arguments of the generic
1874 function lambda list.
1875 * bug fix: REQUIRE accepts a string designator. (Thanks to
1877 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1878 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1879 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1880 * bug fix: The compiler now checks for duplicated variables in macro
1882 * bug fix: SETQ on globals returns the correct value.
1883 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1884 not a COMPILER-ERROR (followed by some other strange error on
1885 choosing the CONTINUE restart).
1886 * bug fix: make.sh and friends are now more consistent in the way that
1887 they look for GNU "make".
1889 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1890 * experimental native threads support (on x86 Linux >=2.4 only).
1891 This is not compiled in by default: you need to add :SB-THREAD to
1892 the target features. See the "Beyond ANSI" chapter of the manual
1894 * fix for longstanding nonANSIism: The old distinction between
1895 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1896 The return value from CL:FIND-CLASS is now a CLOS class, and
1897 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1898 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1899 * An interface to the MetaObject Protocol, as described in Kiczales,
1900 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1901 MIT Press, 1991, is available from the SB-MOP package.
1902 * incompatible change: the SB-PCL package should now be considered
1903 a private implementation detail, and no longer a semi-private MOP
1905 * minor incompatible change: due to rearrangement for threads, the
1906 control stack and binding stack are now allocated at arbitrary
1907 addresses instead of being hardcoded per-port. Users affected by
1908 this probably have to be doing advanced things with shared
1909 libraries, and will know who they are.
1910 * minor incompatible change: Previously, all --eval forms used were
1911 processed with READ before any of them were processed with EVAL.
1912 Now each --eval form is processed with both READ and EVAL before
1913 the next --eval form is processed. (Thus package operations like
1914 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1915 work as the user might reasonably expect.)
1916 * minor incompatible change: *STANDARD-INPUT* is now only an
1917 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1919 * minor incompatible change: Y-OR-N-P is now character-oriented,
1920 not line oriented. Also, YES-OR-NO-P now works without errors.
1921 (thanks to Antonio Martinez)
1922 * sb-aclrepl module improvements: an integrated inspector, added
1923 repl features, and a bug fix to :trace command.
1924 * Known functions, which cannot be open coded by the backend, are
1925 considered to be able to check types of their arguments. (fixing
1926 a bug report by Nathan J. Froyd)
1927 * fixed a bug in computing method discriminating functions: It is
1928 now possible to define methods specialized on classes which have
1929 forward-referenced superclasses. (thanks to Gerd Moellmann)
1930 * fixed evaluation order in optional entries (reported by Gilbert
1932 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1933 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1934 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1935 required-by-AMOP NAME argument, as well as CLASS and
1936 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1937 * fixed bug 20: DEFMETHOD can define methods using names that are
1938 not the proper names of classes to designate class specializers.
1939 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1940 Unix file descriptors, instead of blowing up. (thanks to Antonio
1942 * Garbage collection refactoring: user-visible change is that a
1943 call to the GC function during WITHOUT-GCING will not do garbage
1944 collection until the end of the WITHOUT-GCING. If you were doing
1945 this you were probably losing anyway.
1946 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1947 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1948 TYPEP the latter but not the former.
1949 * The compiler issues a full WARNING for calls to undefined functions
1950 with names from the CL package.
1951 * MAP-INTO for a vector destination is open coded. (reported by
1952 Brian Downing on c.l.l)
1953 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1954 documentation string.
1955 * fixed some bugs revealed by Paul Dietz' test suite:
1956 ** COPY-ALIST now signals an error if its argument is a dotted
1958 ** Condition slots are now accessed more correctly in the presence
1959 of multiple initargs for a given slot.
1960 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1961 exclude restarts of the same name associated with a different
1963 ** DEFCLASS of forward-referenced classes with another
1964 forward-referenced class in the superclasses list no longer
1966 ** Condition slots are now initialized once each, not multiple
1967 times. (thanks to Gerd Moellmann)
1968 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1970 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1971 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1972 arguments contain duplicated elements.
1973 ** RESTART-CASE understands local macros.
1974 ** RESTART-CASE associates exactly its own restarts with a condition.
1975 ** ENDP in safe mode checks its argument to be of type LIST.
1976 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1977 in question is unbound.
1978 ** Optimized MAKE-INSTANCE functions no longer cause internal
1979 assertion failures in the presence of duplicate initargs.
1980 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1981 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1982 propagated even in the ctor optimized implementation of
1984 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1986 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1987 * a better implementation of SXHASH on (simple) bit vectors,
1988 measured both in execution speed and in distribution of results
1989 over the positive fixnums, has been installed. Likewise, a better
1990 implementation of EQUAL for simple bit vectors is now available.
1991 * fixed CEILING optimization for a divisor of form 2^k.
1992 * fixed bug 240 (emitting extra style warnings "using the lexical
1993 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1994 by Antonio Martinez)
1995 * fixed SXHASH, giving different results for NIL depending on type
1996 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1997 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1998 variable. (found by Rolf Wester)
1999 * SBCL does not ignore type declarations for special
2000 variables. (reported by rif on c.l.l 2003-03-05)
2001 * some bug fixes in contrib/sb-aclrepl/
2002 * fixed some bugs revealed by Paul Dietz' test suite:
2003 ** a bug in the CONS type specifier, whereby the CAR and CDR
2004 types got intertwined, has been fixed;
2005 ** the type system is now able to reason about the interaction
2006 between INTEGER and RATIO types more completely;
2007 ** APPEND, [N]REVERSE and NRECONC check that those their
2008 arguments, which must be proper lists, are really so;
2009 ** An array specialized to be unable to hold elements has been
2010 implemented, as required -- yes, really -- by ANSI;
2011 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2012 on malformed property lists;
2014 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2015 * incompatible packaging change: in line with Unix convention,
2016 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2017 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2018 * REQUIRE and PROVIDE are now optionally capable of doing something
2019 useful. See the documentation string for REQUIRE.
2020 * infrastructure for a managed SBCL contrib system: contributed
2021 modules in this release include:
2022 ** the ASDF system definition facility;
2023 ** an interface to the BSD Sockets API;
2024 ** an ACL-like convenience interface to the repl;
2025 (thanks to Kevin Rosenberg)
2026 ** an implementation of ROTATE-BYTE, with efficient implementation
2028 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2029 gives a closer approximation to the right answer than previously.
2030 (thanks to Raymond Toy)
2031 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2032 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2033 optional environment arguments, as required by ANSI.
2034 * fixed bugs in other functions taking environment objects, allowing
2035 calls with an explicit NIL environment argument to be compiled
2037 * fixed bug 228: primary return values from
2038 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2039 COMPILE or FUNCTION.
2040 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2041 :TYPE will no longer signal errors on innocuous objects.
2042 * fixed bug 231b: SETQ is better at respecting type declarations in
2043 the lexical environment.
2044 * fixed a bug in DEFCLASS: classes named by symbols with no or
2045 unprintable packages can now be defined.
2046 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2047 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2048 * fixed compiler failure related to checking types of functions.
2049 (reported by Robert E. Brown)
2050 * the compiler is now much more consistent in its error-checking
2051 treatment of bounding index arguments to sequence functions: in
2052 (SAFETY 3) code, errors will be signalled in almost all cases if
2053 invalid sequence bounding indices are passed to functions defined
2054 by ANSI to operate on sequences.
2055 * fixed a bug in the build procedure: documentation of SBCL-specific
2056 packages is now preserved and available in the final Lisp image.
2057 * lifted FDEFINITION lookup out of loops in the implementation of
2058 many list operations. (thanks to Robert E. Brown)
2059 * fixed a bug in the reader: the #n# reader macro now works for
2060 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2061 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2062 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2063 E. Brown and Tony Martinez respectively)
2064 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2065 SLOT-BOUNDP: in particular, it is now able to optimize them much
2066 better, and is now not vulnerable to having packages renamed.
2067 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2068 always called when a slot is not present in an instance. (thanks
2070 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2071 longer signal an error on unreading a character following EOF on
2072 the previous constituent stream. (thanks to Tony Martinez)
2073 * fixed some bugs revealed by Paul Dietz' test suite:
2074 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2075 not just nonnegative fixnums;
2076 ** the logical bit-array operators such as BIT-AND now accept an
2077 explicit NIL for their "opt-arg" argument (to indicate a
2078 freshly-consed result bit-array);
2079 ** ELT now signals an error on an invalid sequence index in safe
2081 ** the type system is now cleverer about negations of numeric
2082 types, and consequently understands the BIGNUM and RATIO types
2084 ** the type system is now cleverer about the interaction between
2085 INTEGER and RATIO types: while bugs still remain, many more
2086 cases are accurately computed;
2087 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2088 if it is in the last clause;
2089 ** CONSTANTLY now correctly returns a side-effect-free function in
2091 ** DECLARE is no longer treated as a special-operator; in
2092 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2093 * incremented fasl file version number due to the change in the
2094 DEFSTRUCT-SLOT-DESCRIPTION structure.
2096 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2097 * minor incompatible change: code processed by the "interpreter" or
2098 EVAL now has a compilation optimization policy of (DEBUG 2)
2099 (changed from (DEBUG 1)) to improve debuggability of interactive
2100 development, and to allow the use of the debug RETURN command in
2102 * an experimental implementation of the RETURN command for the
2103 debugger has been included. (thanks to Frederik Kuivinen)
2104 * fixed bug 62: constraints were not propagated into a loop.
2105 * fixed bug in embedded calls of SORT (reported and investigated by
2107 * fixed some bugs revealed by Paul Dietz' test suite:
2108 ** printing and reading of arrays with some dimensions having
2109 length 0 (thanks to Gerd Moellmann);
2110 ** BOA constructor with &AUX argument without a default value does
2111 not cause a type error;
2112 ** CONSTANTP now returns true for all self-evaluating objects.
2114 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2115 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2116 accessors that are related by inheritance, as specified in the
2117 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2118 Valtteri Vuorikoski)
2119 * The compiler is now able to inline functions that were defined in
2120 a complex lexical environment (e.g. inside a MACROLET).
2121 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2123 * Support for the upcoming FreeBSD-5.0 release has been included.
2124 (thanks to Dag-Erling Smorgrav)
2125 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2126 effect when it is not in a toplevel context.
2127 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2128 stand a better chance of being correct. (thanks to Gerd
2130 * fixed bug in COERCE, which now signals an error on coercing a
2131 rational to a bounded real type which excludes the expected
2133 * The compiler is now able to derive types more accurately from the
2134 COERCE and COMPILE functions.
2135 * fixed bug 223: functional binding is considered to be constant
2136 only for symbols in the CL package.
2137 * fixed bug 231: SETQ did not check the type of a variable being set
2138 (reported by Robert E. Brown)
2139 * A new optimization for MAKE-INSTANCE has been included, fixing
2140 various bugs (including relating to :ALLOCATION :CLASS slots and
2141 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2143 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2144 ** As required by ANSI, LOOP now disallows anonymous collection
2145 clauses such as COLLECT I in conjunction with aggregate boolean
2146 clauses such as THEREIS (= I 1);
2147 ** LOOP now signals an error when any variable is reused in the
2148 same loop (including the potentially useful construct analogous
2149 to WITH A = 1 WITH A = (1+ A);
2150 ** IT is only a special loop symbol within the first clause of a
2151 conditional loop clause;
2152 ** LOOP with a typed iteration variable over a hashtable now
2153 signals a type error iff it should.
2154 * fixed some other bugs revealed by Paul Dietz' test suite:
2155 ** FILE-STREAM now names the class previously known as FD-STREAM;
2156 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2157 argument) no longer signals an error;
2158 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2159 of the slot symbol, rather than using the current package
2160 ((:CONC-NAME "") continues to intern the slot's name in the
2162 * incremented fasl file version number, because of the incompatible
2163 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2164 of the new implementation of DEFINE-COMPILER-MACRO.
2166 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2167 * Support for building SBCL for MIPS platforms running in
2168 little-endian mode has now been checked in, and basic
2169 functionality on said platforms verified.
2170 * minor incompatible change: PCL now records the pathname of a file
2171 in which methods and the like are defined, rather than its
2173 * minor incompatible change: TRUENAME now considers the truename of
2174 a file naming a directory to be the pathname with :DIRECTORY
2175 component indicating that directory.
2176 * minor incompatible change: a NAMED clause in the extended form of
2177 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2178 reason for the previous behaviour is unclear.
2179 * more systematization and improvement of CLOS and MOP conformance
2180 in PCL (thanks to Gerd Moellman and Pierre Mai):
2181 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2183 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2184 primary methods with no specializers;
2185 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2187 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2188 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2189 FORWARD-REFERENCED-CLASSes; error reporting on
2190 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2192 ** SXHASH on CLOS instances now uses a slot internal to the
2193 instance to return different numbers on distinct instances,
2194 while preserving the same return value through invocations of
2196 ** DEFMETHOD signals errors when methods with longer incongruent
2197 lambda lists are added to generic functions;
2198 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2199 CLASS, as specified in AMOP;
2200 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2201 on the order returned by the primary method for classes of
2202 class STANDARD-CLASS;
2203 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2204 * fixed some bugs shown by Paul Dietz' test suite:
2205 ** DOLIST puts its body in TAGBODY;
2206 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2208 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2209 value producing form;
2210 ** if more variables are given to PROGV than values, extra
2211 variables are bound and made to have no value;
2212 ** NSUBSTITUTE on list arguments gets the right answer with
2214 ** ELT signals an error of type TYPE-ERROR when the index argument
2215 is not a valid sequence index;
2216 ** LOOP signals (at macroexpansion time) an error of type
2217 PROGRAM-ERROR when duplicate variable names are found;
2218 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2219 ** FUNCALL of special-operators now cause an error of type
2221 ** PSETQ now works as required in the presence of side-effecting
2222 symbol-macro places;
2223 ** NCONC accepts any object as its last argument;
2224 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2226 ** loop-for-as-package does not require a package to be explicitely
2228 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2230 * fixed bug 166: compiler preserves "there is a way to go"
2231 invariant when deleting code.
2232 * fixed bug 172: macro lambda lists with required arguments after
2233 &REST arguments now cause an error to be signalled. (thanks to
2235 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2236 bug. (thanks to Matthew Danish)
2237 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2239 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2240 arguments are lexically rebound. (thanks to Gerd Moellmann and
2242 * fixed bug 194: error messages are now more informative when there
2243 is no primary method applicable in a call to a generic
2244 function. (thanks to Gerd Moellmann)
2245 * fixed bug in command line argument checking (thanks to Julian
2247 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2248 (thanks to Matthew Danish)
2249 * incremented fasl file version number, because of the
2250 SXHASH-related changes in the layout of CLOS data structures
2252 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2253 * minor incompatible change: The runtime (the Unix executable named
2254 "sbcl") is now much pickier about the .core files it will load.
2255 Essentially it now requires .core files to descend from the same
2256 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2257 as the runtime does. (The intent is to prevent the crashes which
2258 can occur, and which can even be reported as mysterious failures,
2259 when people patch the sources or change the build parameters
2260 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2261 sbcl and .core files.)
2262 * fixed bug: VALUES-LIST is no longer optimized away.
2263 * fixed bug 142: The FFI conversion of C string values to Lisp
2264 string values no longer conses excessively. (thanks to Nathan
2265 Froyd porting Raymond Toy's fix to CMU CL)
2266 * began to systematize and improve MOP conformance in PCL (thanks to
2267 Nathan Froyd, Gerd Moellman and Pierre Mai):
2268 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2270 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2271 ** FINALIZE-INHERITANCE is now called on class finalization;
2272 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2273 argument precedence order.
2274 * fixed bug 202: The compiler no longer fails on functions whose
2275 derived types contradict their declared type.
2276 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2277 so it can be non-toplevel.
2278 * The fasl file version number has changed (because of the new
2279 implementation of DEFMACRO).
2280 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2281 safe code, that any length requirement by their type-specifier
2282 argument is valid. The exceptions to this are described in bug
2284 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2285 functions now check the types of their inputs as required by ANSI.
2286 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2287 introduced symbol is DECLAREd to be SPECIAL.
2288 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2289 * fixed bug: :COUNT argument to sequence functions may be negative
2290 * fixed bug: body of DO-SYMBOLS may contain declarations
2291 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2292 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2293 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2294 symbol macro only once
2295 * fixed printing of call frame when argument list is unavailable
2296 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2297 * compiler no longer signals WARNING on unknown keyword
2300 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2301 * A beta-quality port to the mips architecture running Linux,
2302 based on the old CMUCL backend, has been made. It has been tested
2303 on a big-endian kernel, and works sufficiently well to be able to
2304 rebuild itself; it has not been tested in little-endian mode.
2305 * fixed an inconsistency between gencgc.c and purify.c which made
2306 dumping/loading .core files unreliable
2307 * fixed bug 120a: The compiler now deals correctly with IFs where
2308 the consequent is the same as the alternative, instead of
2309 misderiving the return type. (thanks to Alexey Dejneka)
2310 * fixed bug 113: Logical pathnames are now dumpable (the logical
2311 host is resolved at load-time, throwing an error if it is not
2313 * fixed bug 174: FORMAT's error message is slightly clearer when a
2314 non-printing character is used in a format directive.
2315 * fixed several bugs in compiler checking of type declarations, i.e.
2316 violations of the Python "declarations are assertions" principle
2317 (thanks to Alexey Dejneka)
2318 * fixed several bugs in PCL's error checking (thanks to Gerd
2320 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2322 * fixed bug in compilation of functions as first class values
2323 (thanks to Antonio Martinez-Shotton)
2324 * The compiler's handling TYPE-ERRORs which it can prove will
2325 inevitably happen at runtime has been cleaned up and corrected
2326 in several ways. (thanks to Alexey Dejneka)
2327 * improved argument type checking for various basic arithmetic
2328 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2329 lavished on them in the past that they can be compiled in many
2330 ways in different special cases
2331 * fixed bug 181: compiler checks validity of user supplied type
2333 * cleaned up code flushing in optimization: Function calls which
2334 should signal errors for safety purposes (e.g. which ANSI says
2335 should signal errors when their arguments are of incorrect type)
2336 are no longer optimized away.
2337 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2338 * incremented fasl file version number, because changes in the
2339 implementation of sequence functions like COERCE caused
2340 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2341 in old inline expansions) to become undefined. (Actually these
2342 changes were later undone, so we might very well be binary
2343 compatible with 0.7.7 after all, but leaving the version number
2344 incremented seemed like the simplest and most conservative
2347 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2348 * An alpha-quality port to the parisc architecture running Linux,
2349 based on the old CMUCL backend, has been made. This, even more so
2350 than the other backends, should be considered still a work in
2351 progress; known problems include that the Linux kernel in 64-bit
2352 mode does not propagate the correct sigcontext structure to
2353 userspace, and consequently SBCL on a parisc64 kernel will not
2355 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2356 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2357 suppressed.) Also now that the compiler is looking at declarations
2358 in the environment, it checks optimization declarations as well,
2359 and suppresses inlining when (> DEBUG SPEED).
2360 * More fixes have been made to treatment of floating point exception
2361 treatment and other Unix signals. In particular, floating point
2362 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2363 * The detection and handling of control stack exhaustion (infinite
2364 or very deeply nested recursion) has changed. Stack exhaustion
2365 detection is now done by write-protecting pages at the OS level
2366 and applies at all optimization settings; when found, a
2367 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2368 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2369 be caught using IGNORE-ERRORS.
2370 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2371 correctly when transforming recursive LABELS functions to LETs.
2372 (thanks to Alexey Dejneka)
2373 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2374 that are names of constants or global variables.
2375 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2376 alien routines with docstrings.
2377 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2378 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2380 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2381 (thanks to Eric Marsden)
2382 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2383 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2384 * Bug fix: The SPARC backend can now compile functions involving
2385 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2386 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2387 to a functions expecting a PATHNAME-DESIGNATOR.
2388 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2389 lambda lists. (thanks to Alexey Dejneka)
2390 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2391 functions so that EXPORTing the name of the class doesn't cause
2392 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2393 to Antonio Martinez for reporting this)
2394 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2395 constant-folded without failing an assertion. (thanks to Einar
2396 Floystad Dorum for reporting this)
2397 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2398 types are now dealt with more correctly by the compiler.
2399 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2400 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2401 behaviour analogous to RENAME-FILE. This puts its behaviour more
2402 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2404 * The fasl file version number has changed again. (because of the
2405 bug fix involving the names of PCL MAKE-INSTANCE functions)
2407 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2408 * bug fix: Floating point exceptions are treated much more
2409 consistently on the x86/Linux and PPC/Linux platforms.
2410 * Array initialization with :INITIAL-ELEMENT is now much faster for
2411 cases when the compiler cannot open code the array creation, but
2412 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2413 array accesses have also seen a speed increase.
2414 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2415 specified. (This was at the root of some bad interactions between
2416 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2418 * bug fix: Internal error arguments for undefined functions are now
2419 computed correctly on the PPC/Linux platform.
2420 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2421 Raymond Toy's patch for CMU CL)
2422 * Support for the Solaris 9 operating environment has been included
2423 (thanks to Daniel Merritt)
2424 * A very ugly but hopefully complete draft of the missing FFI chapter
2425 of the manual has been created by reformatting the corresponding
2426 CMU CL manual chapter into (currently very ugly and incoherent)
2427 DocBook and bringing it up to date for SBCL behavior. Thus, the
2428 manual is now essentially complete, at least by my extreme
2429 once-and-only-once standards, whereby it's acceptable to refer to
2430 the doc strings of SB-EXT functions as the primary documentation.
2431 * The fasl file version number has changed again, due to cleanup of
2432 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2433 is no longer a static symbol.)
2435 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2436 * SBCL now builds with OpenMCL (version 0.12) as the
2437 cross-compilation host; also, more progress has been made toward
2438 bootstrapping under CLISP.
2439 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2441 * bug 158 fixed: The compiler can now deal with integer loop
2442 increments different from 1; fixing this turned out also to fix
2444 * bug 169 fixed: no more bogus warnings about using lexical bindings
2445 despite the presence of perfectly good SPECIAL declarations (thanks
2446 to David Lichteblau)
2447 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2448 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2449 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2451 * bug 180 fixed: Method combination specifications no longer ignore
2452 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2453 * bug fix: Structure type predicate functions now check their argument
2454 count as they should.
2455 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2456 correctly. (thanks to Pierre Mai)
2457 * minor incompatible change: The --noprogrammer option is deprecated
2458 in favor of the new --disable-debugger option, which is very similar.
2459 (The major difference is that it takes effect at a slightly different
2460 time at startup, causing handling of errors in --sysinit and
2461 --userinit files will be affected differently.) The
2462 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2463 been added to allow this functionality to be controlled from ordinary
2464 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2465 maintainers, who might want to run non-interactive scripts to
2466 build SBCL cores which will later be used interactively.)
2467 * minor incompatible change: The LOAD function no longer, when given
2468 a wild pathname to load, loads all files matching that pathname.
2469 Instead, an error of type FILE-ERROR is signalled.
2471 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2472 * bug 147 fixed: The compiler preserves its block link/count
2473 invariants more correctly now so that it doesn't crash. (thanks
2475 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2477 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2478 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2479 no-value-for-this-character as NIL (as specified by ANSI).
2480 * HOST-NAMESTRING on physical pathnames now returns a string that is
2481 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2482 (thanks to Christophe Rhodes)
2483 * The Alpha port handles icache flushing more correctly. (thanks to
2485 * More progress has been made toward bootstrapping under CLISP. (thanks
2486 to Christophe Rhodes)
2487 * The fasl file format has changed again, because dynamic loading
2488 on OpenBSD (which has non-ELF object files) motivated some cleanups
2489 in the way that foreign symbols are transformed and passed around.
2490 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2491 is no longer treated as whitespace by the reader, but instead as
2492 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2493 |A
\7fB|, instead of A as it used to.
2495 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2496 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2497 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2498 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2499 this as of 0.7.1.45, but was left out of the previous news section
2500 (thanks to Dan Barlow)
2501 * SBCL now runs on the Solaris operating system on SPARC architectures
2502 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2503 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2504 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2505 * SPARC backend cleanups, allowing builds of cores optimized for V8
2506 and V9 SPARCS, and also emission of code targeted to a particular
2507 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2509 * SBCL is closer to bootstrapping under CLISP, thanks to various
2510 fixes by Christophe Rhodes.
2511 * The fasl file format has changed again, to allow the compiler's
2512 INFO database to support symbol macros.
2513 * The user manual (in doc/) is formatted into HTML more nicely.
2514 (thanks to coreythomas)
2515 * The system is smarter about SUBTYPEP relationships, especially
2516 those involving NOT types (including types such as ATOM which are
2517 represented internally using NOT types). Thus SUBTYPEP is less
2518 likely to return (VALUES NIL NIL) in general, and in particular
2519 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2521 * The fasl file format has changed again, because the internal
2522 representation of types now includes a new slot to support the new
2523 SUBTYPEP-of-NOT-types logic.
2524 * (not a change in the main branch of SBCL, but a related prototype
2525 which can hopefully be merged into the main branch of SBCL in the
2526 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2527 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2528 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2529 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2530 dispatch macro character combinations. (thanks to Alexey Dejneka)
2531 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2532 that superficially look like logical namestrings correctly.
2533 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2535 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2536 default supplied-p) for &optional and &key arguments. (thanks to
2539 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2540 * incompatible change: The compiler is now less aggressive about
2541 tail call optimization, doing it only when (> SPACE DEBUG) or
2542 (> SPEED DEBUG). (This is an incompatible change because there are
2543 programs which relied on the old CMU-CL-style behavior to optimize
2544 away their unbounded recursion which will now die of stack overflow.)
2545 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2546 for non-GENCGC systems has been increased to 20M (since that
2547 seems much closer to the likely performance optimum for modern
2548 systems than the old 4M value was)
2549 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2550 and *DEBUG-PRINT-LEVEL*
2551 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2552 of CMU CL's support for SPARC, and various endianness and other
2553 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2554 * new syntactic sugar for the Unix command line: --load foo.bar is now
2555 an alternate notation for --eval '(load "foo.bar")'.
2557 ** The system now detects stack overflow and handles it gracefully,
2558 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2559 optimization settings. (This is a good thing in general, and
2560 its introduction in this version should be particularly timely
2561 for anyone whose code fails because of suppression of tail
2563 ** The system now hunts for the C variable "environ" in a more
2564 devious way, to avoid segfaults when the C library version differs
2565 between compile time and run time. (thanks to Christophe Rhodes)
2566 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2567 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2568 ** The compiler no longer issues bogus style warnings for undefined
2569 classes in the same source file as the DEFCLASSes which defined
2570 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2572 ** fixes in CONDITION class precedence list for undefined function
2573 errors (thanks to Alexei Dejneka)
2574 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2575 correctly. (thanks to Dan Barlow)
2576 ** portability fixes aiming at bootstrapping under CLISP (thanks
2577 to Dave McDonald and Christophe Rhodes)
2578 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2579 ** fixes in type translation and and type inference (thanks to
2581 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2582 ** various fixes in the new ports (thanks to Dan Barlow)
2583 * several changes related to debugging:
2584 ** suppression of tail recursion, as noted above
2585 ** stack overflow detection, as noted above
2586 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2587 is now the default. (For some time encapsulation has been more
2588 reliable than the breakpoint-based :ENCAPSULATE NIL
2589 implementation, at least on X86 systems; and I just noticed that
2590 encapsulation also seems closer to the spirit of the ANSI
2593 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2595 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2596 up properly again. (There was a packaging bug in 0.7.0 which
2597 left their definitions in SB-SYS::LOAD-FOREIGN and
2598 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2599 vital for most things which interface to C-level interfaces,
2600 like extensions working with sockets or databases or
2601 Perl-compatible regexes or whatever, and the need to fix
2602 this bug is the main reason that 0.7.1 was released so
2604 ** DEFGENERIC is now choosier about the methods it redefines, so that
2605 reLOADing a previously-LOADed file containing DEFGENERICs does
2606 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2607 cycle now works as it should. (thanks to Alexey Dejneka)
2608 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2609 fixed by Christophe Rhodes. (He actually submitted this patch
2610 months ago, and I delayed until after 0.7.0.)
2611 ** Bug 111 (internal compiler confusion about runtime checks on
2612 FUNCTION types) was fixed by Alexey Dejneka.
2613 * Some internal cleanups (getting rid of variables which aren't
2614 needed now that the byte interpreter is gone) caused the fasl
2615 file format number to change again.
2617 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2618 * major incompatible change: The default fasl file extension, i.e. the
2619 default extension for files produced by COMPILE-FILE, has changed
2620 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2622 ** There are many changes in the implementation of the compiler.
2623 SBCL is now essentially a compiler-only implementation of ANSI
2624 Common Lisp. EVAL still "interprets" a few special cases, but
2625 almost all the interesting cases are handled by creating
2626 a LAMBDA expression, calling COMPILE on it, then calling
2627 FUNCALL on the result.
2628 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2629 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2630 Since the code is newer, there might still be some new bugs
2631 (though not as many as before Martin Atzmueller's fixes:-). But
2632 the new code is substantially simpler and clearer, and hopefully
2633 any remaining bugs will be simpler, less fundamental, and more
2634 fixable then the bugs in the old code.
2635 ** The revised compiler is still a little unsteady on its feet.
2637 *** The debugging information it produces (particularly the names
2638 of FUNCTION objects) is sometimes much less useful than what
2639 the old compiler produced.
2640 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2641 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2642 within a MACROLET) has been temporarily weakened.
2643 ** There are new compiler optimizations for various functions:
2644 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2645 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2646 *** the math functions TRUNCATE, FLOOR, and CEILING
2647 *** the function-of-all-trades COERCE
2648 Mostly these should be transparent, but there's one
2649 potentially-annoying problem (bug 117): when the compiler
2650 inline-expands a function and does type analysis on the result,
2651 it can create control paths which have type mismatches, and
2652 when it can't prove that those control paths aren't taken,
2653 it will issue WARNINGs about the type mismatches. This is
2654 a particular problem in practice for the new sequence functions.
2655 It's not clear how this should be fixed, and for now, a
2656 workaround is given in the entry for 117 in the BUGS file.
2657 ** (Because of the interaction between the two previous items --
2658 occasional inlining problems and new inline expansions -- some
2659 of the new sequence function optimizations won't really kick in
2660 completely until debugging information, and then inlining, are
2661 straightened out in some future version.)
2662 * minor incompatible changes:
2663 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2664 DIRECTORY no longer implicitly promotes NIL slots of its
2665 pathname argument to :WILD. In particular, when you ask for the
2666 contents of a directory (which you used to be able to do without
2667 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2668 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2669 ** changes in behavior that ANSI explicitly defines to be
2670 implementation dependent:
2671 *** The new compiler-only implementation still conforms with ANSI,
2672 but acts a little different than before. Besides the obvious
2673 changes in performance tradeoffs (that the cost per form passed
2674 to EVAL has gone up, and the cost per form executed by EVAL
2675 has gone down), the behavior of the system changes a little
2676 because there are no longer any interpreted function objects.
2677 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2678 e.g. doing COMPILE on the output of interactive DEFUN is
2680 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2682 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2683 has changed from (:CL) to NIL.
2684 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2685 e.g. #\Newline and #\Tab, don't have names specified in the
2686 ANSI Common Lisp standard, is now based on their ASCII symbolic
2687 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2688 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2689 are no longer used for output.
2690 ** changes in internal implementation constants:
2691 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2692 4 million. (If your application spends a lot of time GCing and
2693 you have a lot of RAM, you might want to experiment with
2694 increasing it even more.)
2695 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2696 However, almost all old code should still continue to work without
2697 immediate update, as SB-C-CALL is now a (deprecated) nickname
2699 ** Old operator names in the style DEF-FOO are now deprecated in
2700 favor of new corresponding names DEFINE-FOO, for consistency with
2701 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2702 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2703 internal symbols, but a few supported extensions like
2704 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2705 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2706 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2707 etc. as you get deeper into recursive calls to the debugger
2708 command loop, instead of the old "5]", "5]]", "5]]]"
2709 sequence. (I was motivated to do this when squabbles between
2710 ILISP and SBCL left me very deeply nested in the debugger. In the
2711 short term, this change will probably provoke more ILISP/SBCL
2712 squabbles, but hopefully it will be an improvement in the long run.)
2713 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2714 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2715 function, since declaiming return types involving aliens is
2716 (1) annoyingly messy to do by hand and (2) vital to efficient
2717 compilation of code which calls such functions.
2718 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2719 longer reexported by the SB-EXT package. They're solely useful
2720 for alien code, so it seems more logical that you should get
2721 them from the SB-ALIEN package, not in SB-EXT.
2722 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2723 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2724 features. Instead, the code that they used to control is always
2725 built into the system.
2726 * many other bug fixes
2727 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2728 advantage of the new EVAL-WHEN stuff and to clean them up in
2729 general, and they are now more ANSI-compliant in a number of
2730 ways. Martin Atzmueller is responsible for a lot of this.
2731 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2733 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2734 *** correct ERROR type for various file operations
2735 *** some fixes for Lisp streams
2736 *** DEFMETHOD syntax checking
2737 *** changing old weird representation of debug information as
2738 strings (which, among their other deficiencies, don't transform
2739 correctly when you rename packages, and don't change their
2740 print representation when you change things like *PACKAGE*
2741 and *PRINT-LENGTH*) to symbols and lists of symbols
2742 He also made several improvements and fixed several bugs in DESCRIBE.
2743 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2745 *** misbehavior of WRITE-STRING/WRITE-LINE
2746 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2747 and several other LOOP problems as well
2748 *** DIRECTORY when similar filenames are present
2749 *** DEFGENERIC with :METHOD options
2750 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2751 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2752 *** argument ordering in FIND with :TEST option
2753 *** mishandled package designator argument in APROPOS-LIST
2754 *** various problems in the backquote readmacro
2755 *** a bug in APROPOS
2756 *** probably some others that I'm not describing very well here,
2757 since the CVS log documents them by reference to sbcl-devel
2758 messages, and the SourceForge archives aren't working well.:-(
2759 ** Dan Barlow improved the Alpha port (and is making progress on the
2760 PPC port, for those of you who think different).
2761 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2762 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2763 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2764 continues to work on the SPARC port (for those of you in a position
2765 to look down upon our little PC-compatible boxes from a great height).
2766 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2767 and uses that copy, rather than the current dynamic value, when
2768 it's trying to decide whether to truncate output. Thus e.g.
2769 (let ((*print-lines* 50))
2770 (pprint-logical-block (stream nil)
2772 (let ((*print-lines* 8))
2773 (print (aref possiblybigthings i) stream)))))
2774 should now truncate the logical block only at 50 lines, instead of
2775 often truncating it at 8 lines, as it did before.
2776 * The doc/cmucl/ directory, containing old CMU CL documentation
2777 from the time of the fork, is no longer part of the base system.
2778 SourceForge has shut down its anonymous FTP service, and with it
2779 my original plan for distributing the old CMU CL documentation
2780 there. For now, if you need these files you can download an old
2781 SBCL source release and extract them from it.
2782 * The fasl file version number changed again, for dozens of reasons,
2783 some of which are apparent above.
2785 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2786 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2787 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2788 patch, so that DISASSEMBLE output is much nicer.
2789 * The code in the SB-PROFILE package now seems reasonably stable.
2790 I still haven't decided what the final interface should look like
2791 (I'd like PROFILE to interact cleanly with TRACE, since both
2792 facilities use function encapsulation) but if you have a need
2793 for profiling now, you can probably use it successfully with
2794 the current CMU-CL-style interface.
2795 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2796 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2797 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2798 link now returns the dangling link itself, and for similar
2799 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2800 link itself. (In these cases the old code signalled an error and
2801 looped endlessly, respectively.) Thus, DIRECTORY now works even
2802 in the presence of dangling and cyclic symbolic links.
2803 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2804 is now a supported extension again, since the consensus on
2805 sbcl-devel was that it can be useful for ordinary development
2806 work, not just for debugging SBCL itself.
2807 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2808 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2809 that currently-defined functions might be redefined later with
2810 different return types.
2811 * Hash tables can be printed readably, as inspired by CMU CL code
2812 of Eric Marsden and SBCL code of Martin Atzmueller.
2813 * better error handling in CLOS method combination, thanks to
2814 Martin Atzmueller porting Pierre Mai's CMU CL patches
2815 * more overflow fixes for >16Mbyte I/O buffers
2816 * A bug in READ has been fixed, so that now a single Ctrl-D
2817 character suffices to cause end-of-file on character streams.
2818 In particular, now you only need one Ctrl-D at the command
2819 line (not two) to exit SBCL.
2820 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2822 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2823 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2824 does the right thing.
2825 * The implementation of some type tests, especially for CONDITION
2826 types, is now tidier and maybe faster, due to CMU CL code
2827 originally by Douglas Crosher, ported by Martin Atzmueller.
2828 * Some math functions have been fixed, and there are new
2829 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2830 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2831 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2832 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2833 likely to be built into sbcl-0.7.0.)
2834 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2835 CL, ported to SBCL by Martin Atzmueller)
2836 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2837 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2838 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2839 * There's a new slam.sh hack to shorten the edit/compile/debug
2840 cycle for low-level changes to SBCL itself, and a new
2841 :SB-AFTER-XC-CORE target feature to control the generation of
2842 the after-xc.core file needed by slam.sh.
2843 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2844 COMPILE-FILE is no longer supported, so that now every function
2845 gets an entry point, so that block compilation looks a little
2846 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2847 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2848 returns the number of bytes consed since the system started,
2849 rather than the number consed since the first time the function
2850 was called. (The new definition parallels ANSI functions like
2851 CL:GET-INTERNAL-RUN-TIME.)
2852 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2853 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2854 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2855 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2856 * Fasl file version numbers are now independent of the target CPU,
2857 since historically most system changes which required version
2858 number changes have affected all CPUs equally. Similarly,
2859 the byte fasl file version is now equal to the ordinary
2862 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2863 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2864 is no longer recognized. I apologize for this, because it was
2865 listed in SB-EXT as a supported extension, but I found that
2866 its existing behavior was poorly specified, as well as incorrectly
2867 specified, and it looked like too much of a mess to straighten it
2868 out. I have enough on my hands trying to get ANSI stuff to work..
2869 * many patches ported from CMU CL by Martin Atzmueller, with
2870 half a dozen bug fixes in pretty-printing and the debugger, and
2871 half a dozen others elsewhere
2872 * fixed bug 13: Floating point infinities are now supported again.
2873 They might still be a little bit flaky, but thanks to bug reports
2874 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2875 as flaky as they were.
2876 * The --noprogrammer command line option is now supported. (Its
2877 behavior is slightly different in detail from what the old man
2878 page claimed it would do, but it's still appropriate under the
2879 same circumstances that the man page talks about.)
2880 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2881 are now supported, and enabled by default. Thus, the compiler can
2882 handle many floating point and complex operations much less
2883 inefficiently. (Thus e.g. you can implement a complex FFT
2885 * The compiler now detects type mismatches between DECLAIM FTYPE
2886 and DEFUN better, and implements CHECK-TYPE more correctly, and
2887 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2888 thanks to patches from Martin Atzmueller.
2889 * various fixes to make the cross-compiler more portable to
2890 ANSI-conforming-but-different cross-compilation hosts (notably
2891 Lispworks for Windows, following bug reports from Arthur Lemmens)
2892 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2893 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2894 fixed thanks to Pierre Mai's CMU CL patches.
2895 * fixes to keep the system from overflowing internal counters when
2896 it tries to use i/o buffers larger than 16M bytes
2897 * fixed bug 45a: Various internal functions required to support
2898 complex special functions have been merged from CMU CL sources.
2899 (When I was first setting up SBCL, I misunderstood a compile-time
2900 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2901 * improved support for type intersection and union, fixing bug 12
2902 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2903 more obscure bugs as well
2904 * some steps toward byte-compiling non-performance-critical
2905 parts of the system, courtesy of patches from Martin Atzmueller
2906 * Christophe Rhodes has made some debian packages of sbcl at
2907 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2908 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2909 stable, but are nonetheless usable. When he's ready, I'd be happy
2910 to add them to the SourceForge "File Releases" section. (And if
2911 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2912 * new fasl file format version number (because of changes in
2913 internal representation of (OR ..) types to accommodate the new
2914 support for (AND ..) types, among other things)
2916 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2917 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2919 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2921 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2922 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2923 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2924 * DESCRIBE now works on structure objects again.
2925 * Most function call argument type mismatches are now handled as
2926 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2927 know whether the function will be redefined before the call is
2928 executed. (The compiler could flag local calls with full WARNINGs,
2929 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2930 it doesn't keep track of enough information to know whether calls
2931 are local in this sense.)
2932 * Compiler output is now more verbose, with messages truncated
2933 later than before. (There should be some supported way for users
2934 to override the default verbosity, but I haven't decided how to
2935 provide it yet, so this behavior is still controlled by the internal
2936 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2937 src/compiler/ir1util.lisp.)
2938 * Fasl file format version numbers have increased again, because
2939 support for the Gray streams extension changes the layout of the
2940 system's STREAM objects.
2941 * The Gray subclassable streams extension now works, thanks to a
2942 patch from Martin Atzmueller.
2943 * The full LOAD-FOREIGN extension (not just the primitive
2944 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2945 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2946 but like most other programs, it defaults to copying the Unix
2947 environment from the original process instead of starting the
2948 new process in an empty environment.
2949 * Extensions which manipulate the Unix environment now support
2950 an :ENVIRONMENT keyword option which doesn't smash case or
2951 do other bad things. The CMU-CL-style :ENV option is retained
2952 for porting convenience.
2953 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2954 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2956 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2958 * A patch from Martin Atzmueller seems to have solved the SIGINT
2959 problem, and as far as we know, signal-handling now works cleanly.
2960 (If you find any new bugs, please report them!)
2961 * The system no longer defaults Lisp source file names to types
2962 ".l", ".cl", or ".lsp", but only to ".lisp".
2963 * The compiler no longer uses special default file extensions for
2964 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2965 seems to expect a single default extension for all compiled code,
2966 and there's no compelling reason to try to stretch the standard
2967 to allow two different extensions.) Instead, byte-compiled files
2968 default to the same extension as native-compiled files.
2969 * Fasl file format version numbers have increased again, because
2970 a rearrangement of internal implementation packages made some
2971 dumped symbols in old fasl files unreadable in new cores.
2972 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2973 many fewer weird special cases.
2974 * Bug #17 (differing COMPILE-FILE behavior between logical and
2975 physical pathnames) has been fixed, and some related misbehavior too,
2976 thanks to a patch from Martin Atzmueller.
2977 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2978 by Tim Moore, ported to SBCL by Martin Atzmueller.
2979 * Martin Atzmueller fixed several filesystem-related problems,
2980 including bug #36, in part by porting CMU CL patches, which were
2981 written in part by Paul Werkowski.
2982 * More compiler warnings in src/runtime/ are gone, thanks to
2983 more patches from Martin Atzmueller.
2984 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2987 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2989 * DESCRIBE now works on CONDITION objects.
2990 * The debugger now handles errors which arise when trying to print
2991 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2993 * The build system now uses an additional file, customize-target-features.lisp,
2994 to allow local modifications to the target *FEATURES* list. (The point of
2995 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2996 debugging features enabled, without having to worry about propagating it
2997 into everyone's system when I do a "cvs update".) When no
2998 customize-target-features.lisp file exists, the target *FEATURES* list
2999 should be constructed the same way as before.
3000 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3001 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3002 warn about behavior which is undefined under the ANSI spec. Note: This
3003 is specified by ANSI, but it's not very popular with programmers.
3004 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3005 macro in the SBCL sources for an example of a workaround which you
3006 might use to make portable ANSI-standard code which does what you want.
3007 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3008 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3009 when it's used as a non-toplevel form. (This is required in order
3010 to implement the DEFCONSTANT-EQX macro.)
3011 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3012 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3013 funny things, due to bugs in the implementation of EVAL-WHEN
3014 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3015 non-toplevel DEFCONSTANTs are uncommon.)
3016 * The core file version number and fasl file version number have been
3017 incremented, because the old noncompliant DEFCONSTANT behavior involved
3018 calling functions which no longer exist, and because I also took the
3019 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3020 * fixed bug 1 (error handling before read-eval-print loop starts), and
3021 redid debugger restarts and related debugger commands somewhat while
3023 ** The QUIT debugger command is gone, since it did something
3024 rather different than the SB-EXT:QUIT command, and since it never
3025 worked properly outside the main toplevel read/eval/print loop.
3026 Invoking the new TOPLEVEL restart provides the same functionality.
3027 ** The GO debugger command is also gone, since you can just invoke
3028 the CONTINUE restart directly instead.
3029 ** The TOP debugger command is also gone, since it's redundant with the
3030 FRAME 0 command, and since it interfered with abbreviations for the
3032 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3034 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3035 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3036 some porting work by Martin Atzmueller)
3037 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3038 with a boatload of patches which he ported to SBCL. Now that those
3040 ** The system tries to make sure that its low-priority messages
3041 are prefixed by semicolons, to help people who like to use
3042 syntax highlighting in their ILISP buffer. (This patch
3043 was originally due to Raymond Toy.)
3044 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3045 patches originally written by Raymond Toy.
3046 ** The compiler understands coercion between single-value and
3047 multiple-VALUES type expressions better, getting rid of some very
3048 weird behavior, thanks to patches originally by Robert MacLachlan
3049 and Douglas Crosher.
3050 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3051 lambda lists, thanks to a patch originally by Pierre Mai.
3052 ** The system no longer bogusly warns about "abbreviated type
3054 ** The compiler gets less confused by inlining and RETURN-FROM,
3055 thanks to some patches originally by Tim Moore.
3056 ** The system no longer hangs when dumping circular lists to fasl
3057 files, thanks to a patch originally from Douglas Crosher.
3058 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3059 undefined function error.
3060 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3061 in structure slot initforms) for now, documented workaround instead:-|
3062 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3063 * fixed bug 5: added stubs for various Gray stream functions called
3064 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3065 installed, at least appropriate type errors are generated
3066 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3067 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3068 consistently in DEFMETHOD forms.
3069 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3070 it doesn't seem to affect SBCL after all
3071 * The C runtime system now builds with better optimization and many
3072 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3074 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3076 * The system is now under CVS at SourceForge (instead of the
3077 CVS repository on my home machine).
3078 * The new signal handling code has been tweaked to treat register
3079 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3080 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3081 downstream, e.g. in debug-int.lisp, has implicit dependencies
3082 on the unsignedness of integer representation of machine words,
3083 and that caused the system to bomb out with infinite regress
3084 when trying to recover from type errors involving signed values,
3085 e.g. (BUTLAST '(1 2 3) -1).)
3086 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3087 (This was one of the bugs Peter Van Eynde reported back in July.)
3088 * The system now uses code inspired by Colin Walters' O(N)
3089 implementation of MAP (from the cmucl-imp@cons.org mailing
3090 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3091 inline the MAP operation, and there is more than one
3092 sequence argument to the MAP call (so that it can't just
3093 do ETYPECASE once and for all based on the type of the
3094 single sequence argument). (The old non-inline implementation
3095 of the general M-argument sequence-of-length-N case required
3096 O(M*N*N) time when any of the sequence arguments were LISTs.)
3097 * The QUIT :UNIX-CODE keyword argument has been renamed to
3098 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3099 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3101 * Raymond Wiker's patches to port dynamic loading from Linux to
3102 FreeBSD have been added.
3103 * The BUGS file is now more nearly up to date, thanks in large part
3104 to Martin Atzmueller's review of it.
3105 * The debugger now flushes standard output streams before it begins
3106 its output ("debugger invoked" and so forth).
3107 * The core version number and fasl file version number have both
3108 been incremented, because of incompatible changes in the layout
3110 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3111 used to not be called for a saved Lisp image.)
3112 * Martin Atzmueller's version of a patch to fix a compiler crash,
3113 as posted on sbcl-devel 13 September 2000, has been installed.
3114 * Instead of installing Martin Atzmueller's patch for the
3115 compiler transform for SUBSEQ, I deleted the compiler transform,
3116 and transforms for some similar consing operations.
3117 * A bug in signal handling which kept TRACE from working on OpenBSD
3119 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3120 away by constant folding
3121 * The system now defines its address space constants in one place
3122 (in the Lisp sources), and propagates them automatically elsewhere
3123 (through GENESIS and the sbcl.h file). Therefore, patching the
3124 address map is less unnecessarily tedious and error-prone. The
3125 Lisp names of address space constants have also been systematized.
3126 * CVS tags like dollar-Header-dollar have been removed from
3127 the sources, because they have never saved me trouble and
3128 they've been source of trouble working with patches and other
3129 diff-related operations.
3130 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3131 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3133 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3135 * The system has been ported to OpenBSD.
3136 * The system now compiles with a simple "sh make.sh" on the systems
3137 that it's supported on. I.e., now you no longer need to tweak
3138 text in the target-features.lisp-expr and symlinks in src/runtime/
3139 by hand, the make.sh takes care of it for you.
3140 * The system is no longer so grossly inefficient when compiling code
3141 involving vectors implemented as general (not simple) vectors (VECTOR T),
3142 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3143 which dares to use the various sequence functions on non-simple
3144 vectors, takes less of a performance hit.
3145 * There is now a primitive type predicate VECTOR-T-P
3146 to test for the (VECTOR T) type, so that e.g.
3147 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3148 can now be compiled with some semblance of efficiency. (The old code
3149 turned the type declaration into a full call to %TYPEP at runtime!)
3150 * AREF on (VECTOR T) is still not fast, since it's still compiled
3151 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3152 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3153 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3154 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3155 without making full calls to SUBTYPEP at runtime.
3156 (Some analogous efficiency issues for non-simple vectors specialized to
3157 element types other than T, or for non-simple multidimensional arrays,
3158 have not been addressed. They could almost certainly be handled the
3159 same way if anyone is motivated to do so.)
3160 * The changes in array handling break binary compatibility, so
3161 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3162 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3163 instead of (VALUES T T).
3164 * By following the instructions that Dan Barlow posted to sbcl-devel
3165 on 2 July 2000, I was able to enable primitive dynamic object
3166 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3167 functionality is not implemented (since it calls ld to resolve
3168 library references automatically, requiring RUN-PROGRAM for its
3169 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3170 try to resolve library references) is now supported.
3171 * The system now flushes the standard output streams when it terminates,
3172 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3173 them at several other probably-convenient times, e.g. in each pass of
3174 the toplevel read-eval-print loop, and after evaluating a form given
3175 as an "--eval" command-line option. (These changes were motivated by a
3176 discussion of stream flushing issues on cmucl-imp in August 2000.)
3177 * The source transform for TYPEP of array types no longer assumes
3178 that an array whose element type is a not-yet-defined type
3179 is implemented as an array of T, but instead punts, so that the
3180 type will be interpreted at runtime.
3181 * There is now some support for cross-compiling in make.sh: each of
3182 the phases of make.sh has its own script. (This should be transparent
3183 to people doing ordinary, non-cross-compile builds.)
3184 * Since my laptop doesn't have hundreds of megabytes of memory like
3185 my desktop machine, I became more motivated to do some items on
3186 my to-do list in order to reduce the size of the system a little:
3187 ** Arrange for various needed-only-at-cold-init things to be
3188 uninterned after cold init. To support this, those things have
3189 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3190 symbols with such names are now uninterned after cold init).
3191 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3192 fasl files for cold load.
3193 ** Remove the old compiler structure pooling code (which used to
3194 be conditional on the target feature :SB-ALLOC) completely.
3195 ** Redo the representation of some data in cold init to be more compact.
3196 (I also looked into supporting byte compiled code at bootstrap time,
3197 which would probably reduce the size of the system a lot, but that
3198 looked too complicated, so I punted for now.)
3199 * The maximum signal nesting depth in the src/runtime/ support code has
3200 been reduced from 4096 to 256. (I don't know any reason for the very
3201 large old value. If the new smaller value turns out to break something,
3202 I'll probably just bump it back up.)
3203 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3205 * Many, many bugs reported by Peter Van Eynde have been added to
3206 the BUGS list; some have even been fixed.
3207 * While enabling dynamic object file loading, I tried to make the
3208 code easier to understand, renaming various functions and variables
3209 with less ambiguous names, and changing some function calling
3210 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3211 * While trying to figure out how to do the OpenBSD port, I tried to
3212 clean up some of the code in src/runtime/. In particular, I dropped
3213 support for non-POSIX signal handling, added various comments,
3214 tweaked the code to reduce the number of compilation warnings, and
3215 renamed some files to increase consistency.
3216 * To support the new automatic configuration functionality in make.sh,
3217 the source file target-features.lisp-expr has been replaced with the
3218 source file base-target-features.lisp-expr and the machine-generated
3219 file local-target-features.lisp-expr.
3220 * fixed a stupid quoting error in make.sh so that using CMU CL
3221 "lisp -batch" as cross-compilation host works again
3223 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3225 * DESCRIBE no longer tries to call itself recursively to describe
3226 bound/fbound values, so that it no longer fails on symbols which are
3227 bound to themselves (like keywords, T, and NIL).
3228 * DESCRIBE now works on generic functions.
3229 * The printer now prints less-screwed-up representations of closures
3230 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3231 * A private symbol is used instead of the :EMPTY keyword previously
3232 used to mark empty slots in hash tables. Thus
3233 (DEFVAR *HT* (MAKE-HASH-TABLE))
3234 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3235 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3236 now does what ANSI says that it should. (You can still get
3237 similar noncompliant behavior if bang on the hash table
3238 implementation with all the symbols you get back from
3239 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3240 This breaks binary compatibility, since tests for equality to
3241 :EMPTY are wired into things like the macroexpansion of
3242 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3244 * There's now a minimal placeholder implementation for CL:STEP,
3245 as required by ANSI.
3246 * An obscure bug in the interaction of the normal compiler, the byte
3247 compiler, inlining, and structure predicates has been patched
3248 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3249 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3251 * Missing ordinary arguments in a macro call are now detected even
3252 when the macro lambda list contains &KEY or &REST.
3253 * The debugger no longer complains about encountering the top of the
3254 stack when you type "FRAME 0" to explicitly instruct it to go to
3255 the top of the stack. And it now prints the frame you request even
3256 if it's the current frame (instead of saying "You are here.").
3257 * As specified by ANSI, the system now always prints keywords
3258 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3260 * The default initial SIZE of HASH-TABLEs is now smaller.
3261 * Type information from CLOS class dispatch is now propagated
3262 into DEFMETHOD bodies, so that e.g.
3263 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3265 is now basically equivalent to
3266 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3267 (DECLARE (TYPE SINGLE-FLOAT X))
3269 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3270 operation, without having to do run-time type dispatch.
3271 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3272 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3273 * Since I don't seem to be making big file reorganizations very often
3274 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3275 is overflowing my ability to conveniently back them up), I've finally
3276 checked the system into CVS. (The CVS repository is on my home system,
3277 not at SourceForge -- putting it on SourceForge might come later.)
3278 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3279 high-level GC-NOTIFY-FOO functions send their output. (There's
3280 still very little control of where low-level verbose GC functions
3281 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3282 less than it used to -- the GC-NOTIFY-FOO functions are now under
3283 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3284 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3285 in only one place in the source code, and propagates it automatically
3286 everywhere that it's needed. Thus e.g. when I bump the version from
3287 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3288 * The C source files now include boilerplate legalese and documentation
3289 at the head of each file (just as the Lisp source files already did).
3290 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3291 to his page will be replaced with a link to his new CLiki service.
3293 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3295 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3296 * The build process now looks for GNU make under the default name "gmake",
3297 instead of "make" as it used to. If GNU make is not available as "gmake"
3298 on your system, you can change this default behavior by setting the
3299 GNUMAKE environment variable.
3300 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3301 can build without error under CMU CL.
3303 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3305 * There is now a partial SBCL user manual (with some new text and some
3306 text cribbed from the CMU CL manual).
3307 * The beginnings of a profiler have been added (starting with the
3308 CMU CL profiler and simplifying and cleaning up). Eventually the
3309 main interface should be through the TRACE macro, but for now,
3310 it's still accessed through vaguely CMU-CL-style functions and macros
3311 exported from the package SB-PROFILE.
3312 * Some problems left over from porting CMU CL to the new
3313 cross-compilation bootstrap process have been cleaned up:
3314 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3315 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3316 part when getting rid of the compiler *BACKEND* stuff.)
3317 ** The value of *NULL-TYPE* was screwed up, because it was
3318 being initialized before the type system knew the final
3319 definition of the 'NULL type. This screwed up several key
3320 optimizations in the compiler, causing inefficiency in all sorts
3321 of places. (I found it because I wanted to understand why
3322 GET-INTERNAL-RUN-TIME was consing.)
3323 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3324 PROCLAIM FTYPE information. Unfortunately this broke binary
3325 compatibility again, since now the forms output by DEFGENERIC
3326 to refer to functions which didn't exist in 0.6.3.
3327 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3328 can use the new (as of 0.6.3) transform for SOME into MAP into
3330 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3331 values to (INTEGER 0 1000000), so that the time code will no longer
3332 occasionally get blown up by Linux returning 1000000 microseconds
3333 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3334 its output conform to the ANSI spec. (Alas, this makes its output
3335 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3336 * A full call to MAP NIL with a single sequence argument no longer conses.
3337 * fixes to problems pointed out by Martin Atzmueller:
3338 * The manual page no longer talks about multiprocessing as though
3339 it were currently supported.
3340 * The ILISP support patches have been removed from the distribution,
3341 because as of version 5.10.1, ILISP now supports SBCL without us
3342 having to maintain patches.
3343 * added a modified version of Raymond Toy's recent CMU CL patch for
3344 EQUALP comparison of HASH-TABLE
3346 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3348 * The system still can't cross-compile itself with
3349 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3350 entails), but at least it can compile more of itself that way
3351 than it used to be able to, and various buglets which were uncovered
3352 by trying to cross-compile itself that way have now been fixed.
3353 * This release breaks binary compatibility again. This time
3354 at least I've incremented the FASL file format version to 2, so that the
3355 problem can be detected reliably instead of just causing weird errors.
3356 * various new style warnings:
3357 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3358 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3359 ** using the lexical binding of a variable named in the *FOO* style
3360 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3361 as specified by ANSI.
3362 * *RANDOM-STATE* is no longer automatically initialized from
3363 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3364 default behavior of the system is to repeat its behavior every time
3365 it's run. If you'd like to change this behavior, you can always
3366 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3367 old convention there was no comparably easy way to get the system to
3368 repeat its behavior every time it was run.
3369 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3370 FTYPE declarations has been removed, in favor of their ANSI
3371 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3372 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3373 the types of their sequence arguments can be determined at compile time.
3374 This is done through a new open code expansion for MAP which eliminates
3375 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3376 argument types can be determined at compile time.
3377 * The optimizer now transforms COERCE into an identity operation when it
3378 can prove that the coerced object is already of the correct type. (This
3379 can be a win for machine generated code, including the output of other
3380 optimization transforms, such as the MAP transform above.)
3381 * Credit information has been moved from source file headers into CREDITS.
3382 * Source file headers have been made more standard.
3383 * The CASE macro now compiles without complaining even when it has
3386 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3388 * (Note that the way that the PCL macroexpansions were rewritten
3389 to accommodate the change in DEFGENERIC below breaks binary
3390 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3391 not run under sbcl-0.6.2. Once we get out of alpha releases,
3392 i.e. hit release 1.0.0, we'll probably try to maintain binary
3393 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3394 and sbcl-1.4.4. Until then, however, it might be fairly common
3395 for maintenance releases to break binary compatibility.)
3396 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3398 * The reporting of unhandled signals has been changed to print some
3399 explanatory text as well as the report form. (Previously only
3400 the report form was printed.)
3401 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3402 it defines, so that the compiler no longer issues undefined function
3403 warnings for compiled-but-not-yet-loaded generic functions.
3404 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3405 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3406 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3407 section of the ANSI spec are supported.
3408 * The "" nickname for the "KEYWORD" package has been removed.
3409 The reader still handles symbol tokens which begin with a package marker
3410 as keywords, but it doesn't expose its mechanism for doing so in the
3411 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3412 * The system now issues STYLE-WARNINGs for contradictory TYPE
3413 proclamations. (Warnings for contradictory FTYPE proclamations would
3414 be nice too, but those can't be done usefully unless the type system
3415 is made smarter about FUNCTION types.)
3416 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3417 systematized, so that "*target-*.lisp is supposed to exist only on the
3418 target and imply that there's a related file which exists on the
3419 host, and *host-*.lisp is supposed to exist only on the host and imply
3420 that there's a related file which exists on the target. This involves a
3421 lot of renaming. Hopefully the acute confusion caused by the renaming
3422 will be justified by the reduction in chronic confusion..
3423 ** runtime-type.lisp -> early-target-type.lisp
3424 ** target-type.lisp -> late-target-type.lisp
3425 ** early-host-format.lisp -> early-format.lisp
3426 ** late-host-format.lisp -> late-format.lisp
3427 ** host-error.lisp -> misc-error.lisp
3428 ** early-error.lisp -> early-target-error.lisp
3429 ** late-error.lisp -> late-target-error.lisp
3430 ** host-defboot.lisp -> early-defboot.lisp
3431 ** code/misc.lisp -> code/target-misc.lisp
3432 ** code/host-misc.lisp -> code/misc.lisp
3433 ** code/numbers.lisp -> code/target-numbers.lisp
3434 ** code/early-numbers.lisp -> numbers.lisp
3435 ** early-host-type.lisp -> early-type.lisp
3436 ** late-host-type.lisp -> late-type.lisp
3437 ** host-typep.lisp -> typep.lisp
3438 ** load.lisp -> target-load.lisp
3439 ** host-load.lisp -> load.lisp
3440 ** host-disassem.lisp -> disassem.lisp
3441 ** host-insts.lisp -> insts.lisp
3442 ** byte-comp.lisp -> target-byte-comp.lisp
3443 ** host-byte-comp.lisp -> byte-comp.lisp
3444 ** host-signal.lisp -> signal.lisp
3445 ** host-defstruct.lisp -> defstruct.lisp
3446 ** late-target-type.lisp -> deftypes-for-target.lisp
3447 Furthermore, several other previously target-only files foo.lisp (e.g.
3448 hash-table.lisp and random.lisp) have been split into a target-and-host
3449 foo.lisp file and a target-only target-foo.lisp file, with their key type
3450 definitions in the target-and-host part, so that the cross-compiler will
3451 know more about target types.
3452 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3453 gone away. In their place are various *BACKEND-FOO* variables
3454 corresponding to the slots of the old structure.
3455 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3456 into the target SBCL has been fixed.
3457 * The chill.lisp system for loading cold code into a running SBCL
3459 * Support for the CMU CL "scavenger hook" extension has been removed.
3460 (It was undocumented and unused in the CMU CL sources that SBCL was
3461 derived from, and stale in sbcl-0.6.1.)
3462 * Various errors in the cross-compiler type system were detected
3463 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3464 (enabling various consistency checks). Many of them were fixed,
3465 but some hard problems remain, so the compiler is back to
3466 running without *TYPE-SYSTEM-INITIALIZED* for now.
3467 * As part of the cross-compiler type system cleanup, I implemented
3468 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3469 * I have started adding UNCROSS calls throughout the type system
3470 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3471 on cross-compiler input files will be able to go away, and various
3473 * CONSTANTP now returns true for quoted forms (as explicitly required
3476 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3478 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3479 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3480 (MAKE-LIST -1). In the longer term, it ought to become true
3481 that declarations are assertions even at SAFETY 1. For now, it's not
3482 quite true even at SAFETY 3, but it's at least more nearly true..
3483 (Note that this change seems to increases the size of the system by
3484 O(5%) and to decrease the speed of the compiler by 20% or more.)
3485 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3486 for the problem of printing dozens of lines of distracting information
3487 about low-level system machinery as part of the top stack frame
3488 on entry to the debugger when an undefined function was called.
3489 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3490 is not reset to COMMON-LISP-USER.
3491 * Compilation of stuff related to dyncount.lisp has been made conditional
3492 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3493 smaller. The various dyncount-related symbols have been moved into
3494 a new "SB-DYNCOUNT" package.
3495 * tty-inspect.lisp has been renamed to inspect.lisp.
3496 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3497 feature has gone away. (When we eventually port to other flavors of
3498 libc and/or Unix, we'll try to make the differences between flavors
3499 invisible at the user level.)
3500 * Various other *FEATURES* tags, and/or their associated conditionals,
3501 have been removed if obsolescent, or given better documentation, or
3502 sometimes given more-mnemonic names.
3504 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3506 * tidied up "make.sh" script
3507 * tidied up system directory structure
3508 * better "clean.sh" behavior
3509 * added doc/FOR-CMUCL-DEVELOPERS
3510 * many many small tweaks to output format, e.g. removing possibly-confusing
3511 trailing #\. character in DESCRIBE-INSTANCE
3512 * (EQUALP #\A 'A) no longer signals an error.
3513 * new hashing code, including EQUALP hashing
3514 * tidied up Lisp initialization and toplevel
3515 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3516 * command line argument processing
3517 * added POSIX-GETENV function to deal with Unix-ish environment variables
3518 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3519 terminating SBCL on EOF
3520 * non-verbose GC by default
3521 * There is no more "sbcl" shell script; the sbcl file is now the C
3522 runtime executable (just like CMU CL).
3523 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3525 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3526 symbol and package information as Lisp native symbol and package objects
3527 instead of strings naming symbols and strings naming packages. This way,
3528 whenever packages are renamed (as in warm init), debug information is
3529 transformed along with everything else.
3530 * tweaked the optimization policy declarations which control the building
3531 of SBCL itself. Now, among other things, the system no longer saves
3532 source location debugging information. (This helps two problems at once
3533 by reducing SBCL size and by keeping SBCL from trying to look for its
3534 sources -- which may not exist -- when reporting errors.)
3535 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3536 debugging and testing purposes
3537 * cleaned up printing, making the printer call PRINT-OBJECT for
3538 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3539 methods, giving nearly-ANSI behavior
3540 * converted almost all special variables to use *FOO* naming convention
3541 * deleted PARSE-TIME functionality, since it can be done portably
3542 * moved some files out of cold init into warm init
3543 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3545 * regularized formatting of source files
3546 * added an install.sh script
3547 * fixed ridiculous memory usage of cross-compiler by making
3548 compiler/alloc.lisp not try to do pooling unless it can hook
3549 itself into the GC of the cross-compilation host. Now the system
3550 builds nicely on my old laptop.
3551 * added :SB-ALLOC in target-features.lisp-expr
3552 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3553 was not implemented)
3554 * re-did condition handling and note reporting in the compiler. Notes
3555 are no longer handled by signalling conditions. Style warnings
3556 and warnings are handled more correctly and reported in such a way
3557 that it's easy to find one or the other in your output (so that you
3558 can e.g. figure out which of many problems caused COMPILE-FILE to
3560 * changed the severity of several compiler warnings from full WARNING
3561 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3562 compiler note reporting so that it doesn't use the condition system
3563 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3564 COMPILE-FILE command)
3565 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3566 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3567 no longer supported, since their implementation was deeply intertwingled
3568 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3569 * removed bogus "support" for compiler macros named (SETF FOO), and
3570 removed the compiler macro for SETF INFO (but only after making a fool
3571 of myself on the cmucl-imp mailing list by posting a bogus patch for
3572 DEFINE-COMPILER-MACRO..)
3573 * Compiled files containing forms which have side effects on the Lisp
3574 reader (such as DEFPACKAGE forms) are now handled more correctly.
3575 (Compiler queuing of top level lambdas has been suppressed by setting
3576 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3577 * deleted various currently-unused source files, e.g. gengc.lisp. They
3578 may be added back at some point e.g. when porting to other architectures,
3579 but until they are it's distracting to distribute them and to try to
3581 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3582 there were so many of them they're just distractions, and UNCROSS is
3583 known to be able to handle the current sources
3584 * moved PROFILE functionality into TRACE, so that it will be clear
3585 how the wrapping and unwrapping of functions when you profile them
3586 interacts with the wrapping and unwrapping of functions when you
3587 trace them. (Actually, the functionality isn't there yet, but at least
3588 the interface specification is there. Hopefully, the functionality will
3589 arrive with some future maintenance release.)
3590 * removed host-oops.lisp
3591 * changed signature of QUIT function to allow UNIX-CODE argument
3592 * fixed READ-SEQUENCE bug
3593 * tweaked verbose GC output so that it looks more like the progress
3594 output that ANSI specifies for functions like LOAD
3595 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3596 * added <http://sbcl.sourceforge.com> to the banner information printed by