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 * optimization: faster implementation of EQUAL
6 * fixed segfaults on x86 FreeBSD 7-current (thanks to NIIMI Satoshi)
8 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
9 * minor incompatible change: (SETF CLASS-NAME) and (SETF
10 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
11 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
12 by ANSI as a generic function, and for consistency (SETF
13 GENERIC-FUNCTION-NAME) is treated likewise.
14 * fixed bug #233.b: make constraint propagation notice when a variable
15 value is changed after it is referenced but before it is used
16 * fixed bug #296: no more arbitrary behaviour from filenames with
17 odd characters as --load arguments. (reported by Adam Warner)
18 * fixed bug #390: :CHARACTER-SET pathname components now work as
19 expected. (reported by Tim Daly Jr)
20 * fixed bug #391: complicated :TYPE intersections in slot
21 definitions no longer cause an error in PCL internals.
22 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
23 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
24 returning the number of octets which would be written to the
25 file-stream. (thanks to Robert J. Macomber)
26 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
27 arguments to the internal stream functions. (thanks to David
29 * bug fix: stack exhaustion is now handled on the x86/SunOS
30 platform. (thanks to Daisuke Homma)
31 * bug fix: more accurate ROOM results on GENCGC platforms
32 * optimization: improved type inference for arithmetic-for
33 index variables in LOOP
34 * optimization: faster floating-point SQRT on x86-64
35 * fixed some bugs revealed by Paul Dietz' test suite:
36 ** DOCUMENTATION returns NIL instead of "" for method combinations
37 that don't have a docstring
39 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
40 * minor incompatible change: (SETF CLASS-NAME) and (SETF
41 GENERIC-FUNCTION-NAME) are no longer generic functions, and
42 therefore are not customizeable by user code (as seems to be at
43 least permitted and maybe required by AMOP). As a consolation,
44 however, the SBCL implementation of these functions now calls
45 REINITIALIZE-INSTANCE as specified by AMOP.
46 * bug fix: slot-definition documentation is propagated as per ANSI
47 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
48 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
49 argument, as do eslotd initialization methods. (from Pascal
50 Costanza's "Closer" project)
51 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
52 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
54 * bug fix: it is now possible to have more than one subclass of
55 STANDARD-GENERIC-FUNCTION without causing stack overflow.
56 (reported by Bruno Haible, Pascal Costanza and others)
57 * bug fix: the dependent update protocol now works for generic
58 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
60 * bug fix: condition-class instances corresponding to
61 DEFINE-CONDITION forms are now created eagerly. (reported by
62 Kalle Olavi Niemitalo on comp.lang.lisp)
63 * bug fix: floating point printing is more accurate in some
64 circumstances. (thanks to Simon Alexander)
65 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
66 merged with *DEFAULT-PATHNAME-DEFAULTS*.
67 * bug fix: callbacks on OS X now preserve stack-alignment.
68 (thanks to Cyrus Harmon)
69 * enhancement: the x86-64 disassembler is much better at
70 disassembling SSE instructions. (thanks to Lutz Euler)
71 * enhancement: CHECK-TYPE on a variable now allows type-inference
72 (thanks to Vincent Arkesteijn)
73 * optimization: improved performance of EUC-JP external format.
74 (thanks to NIIMI Satoshi)
75 * optimization: performance improvements to IO on file streams of
76 :ELEMENT-TYPE CHARACTER
77 * optimization: much faster memory allocation on x86-64
78 * optimization: faster garbage collections (latency and throughput)
80 * optimization: faster bignum subtraction and division on x86 and x86-64
81 (thanks to Lutz Euler)
82 * optimization: more accurate type-inference for loops that use a
83 floating point index variable or a negative step.
85 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
86 * bug fix: add a workaround to SBCL looping infinitely at startup on
87 Linux kernels with apparently buggy implementations of personality().
88 (thanks to Svein Ove Aas)
89 * bug fix: Unicode symbols are correctly printed in LDB backtraces
90 (thanks to David Lichteblau)
91 * bug fix: local bindings shadow global symbol macros for
92 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
93 * optimization: non-open coded uses of numeric comparison operators
94 (e.g. >) no longer cons when called with more than one parameter
95 on platforms supporting dynamic-extent allocation.
96 * enhancement: saving cores with foreign code loaded is now supported
97 on MIPS/Linux in addition to the previously supported platforms.
98 * bug fix: FIND-RESTART now tests for activity, not applicability when given
99 a restart object as identifier. (reported by Helmut Eller for CMUCL)
100 * bug fix: division by zero in sb-sprof when no samples were collected
101 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
102 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
103 (thanks to Alexander Kjeldaas)
104 * new feature: ignoring the return values of destructive functions
105 like NREVERSE signals a compile-time style-warning.
106 (thanks to Kevin Reid)
107 * new feature: the alignment of alien structure fields can be
108 explicitly specified. (thanks to Cyrus Harmon)
109 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
110 and dump core on SIGQUIT
112 ** incompatible change: threads do not inherit values of specials
113 from their parents (see manual)
114 ** bug fix: threads stacks belonging to dead threads are freed by the
115 next exiting thread, no need to gc to collect thread stacks anymore
116 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
117 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
118 ** bug fix: dynamic variable and thread start related gc lossage
119 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
121 * fixed some bugs revealed by Paul Dietz' test suite:
122 ** SUBTYPEP is slightly more accurate on heinously complicated
123 CONS types where some of the members have uncertain (in the
124 NIL, NIL sense) type relationships to each other.
126 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
127 no longer purified unless :PURIFY T is explicitly specified.
128 ** Non-purified cores are significantly smaller than before
130 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
131 * new feature: timers based on Zach Beane's excellent timer package
132 * added support for the following external formats: koi8-u,
133 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
134 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
135 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
136 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
137 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
138 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
139 * incompatible change: a threaded SBCL will no longer revert to
140 non-threaded mode on non-NPTL systems, but refuse to start entirely.
141 * bug fix: interrupts are disabled until startup is complete; no
142 more sigsegvs when receiving a signal to soon
143 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
145 * bug fix: add a workaround for the memory randomization features in
146 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
147 workaround will only be in effect on systems with the proc filesystem
149 * bug fix: printing objects of type HASH-TABLE signals a
150 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
152 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
153 have been running for over 50 days. (reported by Gilbert Baumann)
154 * bug fix: the logic for getting names of functions gets less
155 confused when confronded with alternate-metaclass
156 funcallable-instances. (reported by Cyrus Harmon)
157 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
158 consistent, even on internal alternate-metaclass objects.
159 * bug fix: flush closure information collected by physical
160 environment analysis prepass before the main pass. (bug reported
162 * bug fix: compiler pack phase does not modify a hashtable, which is
163 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
164 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
165 may be expanded. (reported by Alexander <malishev> on c.l.l)
166 * bug fix: no more style-warnings when compiling code using LAST
167 under high-SPEED low-SPACE settings. (reported by David Wallin
169 * fixed some incompatibilities between SBCL's MOP and the MOP
171 ** the METAOBJECT class is now implemented;
172 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
173 STANDARD-OBJECT, as required;
174 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
175 now compatible (as required by VALIDATE-SUPERCLASS); there
176 remains a consistency requirement over the presence or absence
177 of the FUNCTION class in the superclass list of finalized
178 classes; see the manual for more details;
179 ** the :AROUND method for COMPUTE-SLOTS on
180 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
181 requested slot ordering.
183 ** bug fix: parent thread now can be gc'ed even with a live
185 ** bug fix: binding a special with PROGV to no value is not
186 the same as that symbol not having been bound (thanks to
188 ** bug fix: binding specials is thread safe (thanks to
190 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
191 and SB-SPROF do not die with 'no handler for signal XX in
192 interrupt_handle_now(..)' anymore
193 ** bug fix: WITH-TIMEOUT works with multiple running threads
194 * fixed some bugs revealed by Paul Dietz' test suite:
195 ** ENSURE-GENERIC-FUNCTION should take a method class object for
196 the :method-class keyword argument.
198 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
199 * new port: the Solaris operating system on x86 processors is now
200 mostly supported, though some rough edges in the environment
201 remain. (thanks to Daisuke Homma)
202 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
203 space for its heap. (thanks to Thiemo Seufer)
204 * optimization: SBCL on MIPS platforms now supports dynamic-extent
205 closures. (thanks to Thiemo Seufer)
206 * minor incompatible change: eof selects abort in the debugger.
207 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
208 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
210 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
211 deprecated, and will go away in a future revision of SBCL.
212 * minor incompatible change: GC-ON and GC-OFF are no longer
213 implemented with a counter, it does not matter how many times gc
214 is switched on or off
215 * bug fix: discriminating functions for generic function classes
216 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
217 make invalid assumptions about method precedence order. (reported
219 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
220 platforms. (thanks to Thiemo Seufer)
221 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
222 * bug fix: correct pathname printing with printer escaping is on.
223 (thanks to Kevin Reid)
224 * bug fix: complex VOP definitions in "user-space" no longer trigger
225 package locks. (reported by Zach Beane)
226 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
227 for funcallable-instance functions, and is no different from
229 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
230 characters in the current readtable. (reported by Nicholas Neuss)
231 * bug fix: SUBTYPEP on various CONS types returns more a more
232 accurate acknowledgment of its certainty.
233 * optimizations: REMOVE-DUPLICATES now runs in linear time on
234 lists in some cases. This partially fixes bug 384.
235 * flush all standard streams before prompting in the REPL and the
237 * bug fix: signal handling and triggering gc do not conflict
238 directly anymore, in particular a high frequency sb-sprof does
239 not prevent gc from running
240 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
241 approximation for timezone and DST information between the
242 universal time epoch and the smallest negative 32-bit time_t.
243 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
244 year 1899 so long as the encoded time is non-negative.
245 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
246 the correct answer for non-constant rotate amounts when performing
247 an inline 32-bit rotation.
249 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
250 there is only one thread in the session
251 ** bug fix: memory leak for streams created in one thread and
252 written to in another
253 ** bug fix: lockup when compiled with gcc4
254 ** bug fix: race that allows the gc to be triggered when gc is
256 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
257 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
259 ** bug fix: finished threads are gc'ed properly
260 * fixed some bugs revealed by Paul Dietz' test suite:
261 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
262 has arguments with a different set of applicable methods from
263 the orignal arguments.
264 ** The type error thrown by MAP now has a correct expected-type
266 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
267 name a compiled function.
268 ** Three MISC tests where a large bignum was improperly coerced to
269 a float that couldn't represent that bignum during type
270 derivation were fixed.
271 ** SUBTYPEP can now handle types involving the negation of a
272 list-form FUNCTION type.
273 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
274 as (COMPLEX (AND RATIO (NOT FIXNUM))).
275 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
277 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
278 * New feature: Experimental support for bivalent streams: streams
279 opened with :element-type :default now allow character and binary
280 (unsigned-byte 8) I/O
281 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
282 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
284 * bug fix: no more highly sporadic "couldn't check whether ~S is
285 readable" when reading a stream and an interrupt hits in the middle
286 of a select system call
287 * compiler better recognizes complex arrays (reported by Eduardo
289 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
290 for variables on SBCL built with linkage-tables. (reported by Luis
292 * various error reporting improvements.
293 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
294 (Thanks to Thiemo Seufer)
295 * bug fix: nested reader invokations work correctly
296 * bug fix: it is possible to have simultaneous references to foreign
297 code and foreign data with the same name.
299 ** added x86-64 support
300 ** incompatible change: the threading api now works with thread
301 objects instead of thread ids
302 ** bug fix: threads are protected from signals and interruption when
303 starting up or going down
304 ** bug fix: a race where an exiting thread could lose its stack to gc
305 ** bug fix: don't halt on infinite error in threads if possible
306 ** fixed numerous gc deadlocks introduced in the pthread merge
307 ** bug fix: fixed thread safety issues in read and print
308 ** bug fix: debugger doesn't hang on session lock if interrupted at
309 an inappropriate moment
310 ** bug fix: run-program is now thread safe(r)
311 ** bug fix: inner with-recursive-lock no longer releases the mutex
312 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
313 * fixed some bugs revealed by Paul Dietz' test suite:
314 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
315 EXPECTED-TYPE slots filled.
316 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
318 ** MAKE-CONDITION accepts classes as type-designators.
319 ** COMPILE may never return NIL.
320 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
321 range before calling Unix time functions
323 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
324 * numerous signal handling fixes to increase stability
325 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
326 * minor incompatible change: we now correctly canonize default
327 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
328 as per the MOP, rather than the historical (INITARG INITFUNCTION
329 INITFORM). (reported by Bruno Haible)
330 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
331 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
332 for more information.
333 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
334 pathname is a directory pathname.
335 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
336 * dynamic space size on PPC has been increased to 768Mb. (thanks to
338 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
339 :METACLASS argument in addition to a class name. (reported by
340 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
341 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
342 (reported by Bruno Haible; patch from Gerd Moellmann)
343 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
345 * bug fix: more cleanups to the floating point exception handling on
346 x86-64 (thanks to James Knight)
347 * bug fix: the compiler does not try to constant fold calls of
348 COERCE and BIT-* functions when they return freshly constructed
349 objects. (reported by Nikodemus Siivola and Paul Dietz)
350 * optimization: improved the MIPS versions of generic (in the
351 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
352 * optimization: direct conversion of (unsigned-byte 32) to floats on
353 the PowerPC platform.
354 * optimization: structure instances with raw slots now use less
355 memory, and probably show better memory locality. (thanks to
357 * optimization: DYNAMIC-EXTENT declarations for lists and closures
358 are treated as requests for stack allocation on the x86-64,
359 Alpha-32, PPC and SPARC platforms.
360 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
361 the wrong file descriptor; implementation of SOCKET-OPEN-P.
362 (thanks to Tony Martinez)
364 ** gcing a dead thread can no longer lead to lockups
365 ** threads block signals until they are set up properly
366 ** errno is no longer shared by threads
367 ** interrupt-thread restores the eflags register on x86
368 ** fixed some lockups due to gc/thread interaction
369 * fixed some bugs revealed by Paul Dietz' test suite:
370 ** invalid dotted lists no longer raise a read error when
372 ** signal an error if a symbol that names a declaration is used
373 as the name of a type, or vice versa
374 ** allow using the (declare (typespec var*)) abbreviation for
375 (declare (type typespec var*)) with all type specifiers
376 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
377 ** always return NIL from PPRINT-POP when OBJECT is NIL
378 ** don't signal errors when pretty-printing malformed LABELS,
379 FLET or MACROLET forms
380 ** declarations in a DOLIST body are also in scope for the
382 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
384 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
387 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
388 * fixed cross-compiler leakages that prevented building a 32-bit
389 target with a 64-bit host compiler.
390 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
391 opened with :IF-EXISTS :OVERWRITE.
392 * fixed bug 281: error for an invalid qualifier in a short-form method
393 combination method is not signalled until the faulty method is called.
394 * bug fix: iteration variable type inferrer failed to deal with open
395 intervals. (reported by Alan Shields)
396 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
397 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
398 or more runtime options were provided to the sbcl binary.
399 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
400 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
401 * optimization: there's now a fast-path for fixnum arguments in the
402 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
403 * optimization: the code generated on x86-64 is more compact thanks
404 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
405 * bug fix: floating-point exception handling now partly works on
406 x86-64. (Thanks to James Knight)
407 * improvement to the MIPS backend from Thiemo Seufer: C-style
408 64-bit long long arguments and return values to alien functions
410 * fixed some bugs revealed by Paul Dietz' test suite:
411 ** the type-error signalled from WARN has a filled-in DATUM slot.
412 ** the type-error required when a stream is not associated with
413 a file has the stream as its datum.
414 ** type-errors on single-floats on x86-64 no longer have
415 :INVALID-OBJECT as the datum
416 ** the type-errors signalled for invalid function names now have
417 a correct expected type
418 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
419 for structures defined with a :TYPE. Documentation strings for
420 typed structures are no longer immediately discarded
421 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
422 broadcast streams and synonym streams. FILE-LENGTH now also works
423 on broadcast streams.
425 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
426 * incompatible change: the --noprogrammer option, deprecated since
427 version 0.7.5, has been removed. Please use the equivalent
428 --disable-debugger option instead.
429 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
431 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
432 inoperational for a while now) has been completely removed.
433 * null lexical environments are now printed as #<NULL-LEXENV>,
434 significantly reducing the amount of clutter in typical backtraces.
435 * documentation on weak pointers, finalization, and after GC hooks
436 has been added to the manual.
437 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
438 as other specialized array types, is much faster. SUBSEQ and
439 COPY-SEQ on such arrays have also been sped up.
440 * optimization: EQL is now more efficient when at least other argument
441 is known to be of type (OR FIXNUM (NOT NUMBER)).
442 * fixed bug: the runtime is now less vulnerable to changes in the
443 size of the SBCL object on OS X, and virtual memory is reserved for
444 all spaces that need to be at a fixed address.
445 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
446 * fixed bug: finalizers and after GC hooks that cause consing are now
448 * fixed bug: compiler error messages and summaries are now printed to
449 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
450 * fixed inference of the upper bound of an iteration variable.
451 (reported by Rajat Datta).
452 * fixed bug 211e: calling local functions with duplicated constant
453 keyword argument no longer causes a bogus style warning about an
455 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
456 ftype declaration to be disregarded. (reported by Dave Roberts)
457 * fixed bug 373: caused by erronous compilation of references to alien
458 variables in the runtime on ppc/darwin.
459 * fixed bug 376: CONJUGATE type deriver.
460 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
461 (reported by Baughn on #lisp)
462 * a cross-compiler bug on non-x86 platforms has been identified and
463 fixed. (thanks to Bruno Haible)
464 * improvements to the MIPS runtime code for increased stability.
465 (thanks to Thiemo Seufer)
466 * increased the maximimum compact environment size to allow
467 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
468 * partial workaround for bug 135: don't name the function we're
469 calling for hairy cases of EVAL, so as not to accumulate one environment
470 entry per call to EVAL. (reported by Kevin Reid)
471 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
472 * optimization: type testing for non-vector arrays should be faster.
473 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
475 * bug fix: setting 31st element of a bit vector to zero did not work
477 * bug fix: redefining a class definition which failed due to a
478 previous accessor / function clash now works (but see BUGS entry
479 #380 for more problems in this area). (thanks to Zach Beane)
480 * the long form of DEFINE-METHOD-COMBINATION disables method group
481 checking when given a single method group with pattern *. (thanks
483 * on x86 compiler supports stack allocation of results of simple
484 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
485 * support for building and running on Mac OS X 10.4 "Tiger" has been added
486 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
487 * fixed some bugs related to Unicode integration:
488 ** the restarts for recovering from input and output encoding
489 errors only appear when there is in fact such an error to
491 * fixed some bugs revealed by Paul Dietz' test suite:
492 ** MISC.549 and similar: late transformation of unsafe type
493 assertions into derived types caused unexpected code
495 ** SCALE-FLOAT type deriver is less wrong.
496 ** type derivers for EXP, LOG and similar functions compute result
497 types for complex arguments better.
498 ** (MISC.563) CONJUGATE type deriver works for very restricted
500 ** out-of-line type testers for character strings are available.
501 ** EQUAL compiler transform understands specialness of objects
503 ** accessing double-floats stored on the stack now works on x86-64.
504 ** debugger internals could sometimes create invalid lispobjs,
505 resulting in GC crashes.
506 ** MISC.548: type check weakening can convert required type into
508 ** initialization forms for bindings are not in scope of free special
511 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
512 * incompatible change: thread support for non-NPTL systems has
513 been removed - locking is buggy and unreliable. A threaded
514 SBCL build will now warn at startup and refuse to create
515 new threads, unless futex support is detected in the kernel
516 * incompatible change: the top level REPL now has only an ABORT
517 restart associated with it, not TOPLEVEL and ABORT as it used to.
518 TOP and TOPLEVEL are now available as debugger commands for
519 returning to the top level.
520 * incompatible change: forms evaluated in the REPL now use the
521 global optimization policy.
522 * incompatible change: user- and system-initialization files are
523 no longer processed with LOAD, but by READ and EVAL; hence the
524 global optimization policy, startup package, readtable, etc,
526 * The .fasl file format number has been incremented because of
527 various incompatible changes.
528 * internal entry point details and argument counts no longer appear
529 in backtraces unless explicitly requested by setting
530 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
531 * built-in and standard functions no longer have names like "top
532 level local call to FOO".
533 * fixed bug 32: functions defined in non-null lexical environments
534 now have more legible printed representation
535 * fixed bug 33: functions defined in non-null lexical environemnts
536 are now more amenable to inspection by INSPECT.
537 * workaround for bug 354: XEPs no longer appear in backtraces unless
538 explicitly requested.
539 * fixed bug: receiving the signal which results from attempting to
540 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
541 SIGBUS on other *BSDs) on architectures where the C stack is also
542 the Lisp stack (x86 and x86-64) from foreign code no longer leads
543 to debugger confusion or wild instability. (reported by Cheuksan
545 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
546 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
547 (reported by Lutz Euler)
548 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
549 compiled code. (reported by Paul Dietz)
550 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
551 specialized parameter to a method to something that is not TYPEP
552 the specializer is now possible.
553 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
554 face of package deletion.
555 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
556 pathname. (reported by David Tolpin on c.l.l)
557 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
558 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
559 STRING-STREAM and FILE-STREAM, respectively.
560 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
561 than previously; in addition, its test suite is now run on build.
562 (thanks to Luke Gorrie)
563 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
564 * optimization: added a immediate representation for single-floats
566 * fixed some bugs revealed by Paul Dietz' test suite:
567 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
568 ** attempting to create a package with a colliding nickname causes
569 correctable errors to be signalled.
570 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
571 ** several x86-64 backend bugs related to sign-extension of immediate
574 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
575 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
576 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
578 * fixed loading of multiply forward-referenced layouts.
579 (thanks to Cheuksan Wang)
580 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
581 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
582 (see COMPILE-FILE documentation for details of :PRINT option)
583 * fixed bugs 19 and 317: fixed-format floating point printing is
584 more accurate. This also fixes a bug reported by Adam Warner
585 related to the ~@F format directive.
586 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
588 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
589 dispatch table if the from-char is a dispatch macro character.
590 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
591 by the wordsize no longer ignore the last word. (reported by Lutz
593 * fixed bug in type checking of dynamic-extent variables. (reported
595 * optimization: sequence traversal functions use their freedom to
596 coerce function designators to functions.
597 * optimization: code with many calls to CLOS methods specialized on
598 CLOS classes has had redundant type checks removed.
599 * optimization: added declarations to speed up operations that access
600 the internal character database (for example STRING-UPCASE)
601 * optimization: comparison operations between floats and sufficiently small
602 fixnums no longer create extra rationals
603 * fixed some bugs related to Unicode integration:
604 ** portions of multibyte characters at the end of buffers for
605 character-based file input are correctly transferred to the
606 start of the buffer at the next read.
607 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
608 passing it through to OPEN.
609 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
610 argument given to internal calls to OPEN.
611 ** the built-in comment readers (introduced by character sequences
612 ";" and "#|") are more forgiving to encoding errors; they will
613 STYLE-WARN and then attempt to resync the stream at a character
614 boundary. (thanks to Teemu Kalvas)
615 * fixed some bugs in the x86-64 port:
616 ** Negative short int return values from c-calls are sign-extended
618 ** The stack is aligned to 16-bytes for c-calls, as required by
619 the ABI. (thanks to Cheuksan Wang)
620 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
621 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
622 for enums. (thanks to Vincent Arkesteijn)
623 ** Multiple small optimizations and bugfixes for floating point
625 * fixed some bugs revealed by Paul Dietz' test suite:
626 ** Space, Tab, Linefeed, Return and Page have the invalid
627 secondary constituent character trait.
628 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
630 ** WITH-INPUT-FROM-STRING should only update the index place on
632 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
634 ** Bit-array operations (BIT-AND and similar) worked incorrectly
635 with one-dimensional arrays with fill pointers.
636 ** TYPE-OF failed on a complex with an integer realpart and a
638 ** compiler failure during type inference for the code of form
639 (IF (EQL X (THE ...)) ...) (MISC.535).
641 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
642 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
643 platform. The port supports 61-bit fixnums, large memory spaces
644 and reloading shared object files.
645 * enhancement: saving cores with foreign code loaded is now
646 supported on ppc/Darwin in addition to the previously supported
648 * enhancement: the statistical profiler now walks deeper into the
649 call stack for more meaningful call-graphs and accrued time
650 reports (x86/x86-64 only). It also now reports time spent in
652 * enhancement: it is now possible to trace most individual methods
653 of a generic function in addition to tracing the generic function
655 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
657 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
658 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
659 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
660 produces an error. (thanks to Vincent Arkesteijn)
661 * bug fix: NAMESTRING on pathnames with :WILD components in their
662 directories works correctly. (thanks to Artem V. Andreev)
663 * fixed bug 125: compiler preserves identity of closures. (reported
665 * bug fixed: functions with &REST arguments sometimes failed with
666 "Undefined function" when compiled with (DEBUG 3). (reported by
668 * bug fix: overflow during compiling of setting element of a bit
669 vector with constant index and value. (reported by Timmy Douglas)
670 * build fix: fixed the dependence on *LOAD-PATHNAME* and
671 *COMPILE-FILE-PATHNAME* being absolute pathnames.
672 * on x86 compiler partially supports stack allocation of dynamic-extent
674 * GO and RETURN-FROM do not check the extent of their exit points
675 when compiled with SAFETY 0.
676 * fixed some bugs related to Unicode integration:
677 ** encoding and decoding errors are now much more robustly
678 handled; it should now be possible to recover even from invalid
679 input or output to the terminal. (thanks to Teemu Kalvas)
680 ** provided a first cut at implementing STRING-TO-OCTETS and
681 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
682 ** altered the SB-MD5 contributed module slightly, changing the
683 interface just enough for it to be supportable for builds where
684 lisp characters are not eight bits.
685 * fixed some bugs revealed by Paul Dietz' test suite:
686 ** the FORMATTER-generated functions for ~V[ conditionals require
687 the correct number of arguments.
688 ** READ-FROM-STRING returns the mandated second value when applied
689 to displaced strings.
690 ** the #\Rubout and #\Backspace characters are treated as invalid
691 constituent characters by the tokenizer.
693 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
694 * new feature: reloading changed shared object files with
695 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
696 * new feature: references to foreign variables and functions
697 can now be compiled and loaded before the corresponding shared
698 object file is loaded, as long as the foreign definitions are
699 available at runtime.
700 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
701 supported. (thanks to Dan Debertin)
702 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
703 just keywords. (thanks to Vincent Arkesteijn)
704 * fixed bug #331: structure-class instances corresponding to
705 DEFSTRUCT forms are now created eagerly.
706 * fixed bug #345: backtraces from calls to undefined functions work
707 on x86 as well. Related bug #61 is now also partially fixed on x86
708 (backtraces from throws to unknown catch tags.)
709 * bug fix: lambda-list parsing is now stricter vrt. order and number
710 of lambda-list keywords.
711 * bug fix: as specified by AMOP, an error is signalled if a
712 class-option appears multiple times in a DEFCLASS form. (reported
714 * bug fix: RANDOM can be compiled when the compiler derives the type
715 of its numeric argument as a disjoint set of small integers.
716 (reported by Paul Dietz)
717 * bug fix: starting a core saved with shared objects loaded when
718 those objects are not available no longer causes threaded SBCL to
719 hang. (reported by Sean Ross)
720 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
722 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
723 argument, which must always be NIL. (reported by Kalle Niemitalo)
724 * bug fix: printing 1.0d+23 no longer results in an error.
725 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
726 * bug fix: structure slot setters preserve evaluation order. (thanks
728 * fixed some bugs related to Unicode integration:
729 ** RUN-PROGRAM can allow its child to take input from a Lisp
730 stream. (reported by Stefan Scholl)
731 ** ASDF-INSTALL successfully downloads .tar.gz files in all
732 locales. (reported by Ken Causey)
733 * fixed some bugs revealed by Paul Dietz' test suite:
734 ** INCF, DECF and REMF evaluate their place form as specified in
736 ** FORMATTER expands ~{ ~} iteration directives with V or #
737 parameters correctly.
738 ** FORMATTER deals with the ~@[ ~] conditional directive where the
739 consequent uses no arguments correctly.
740 ** the system has a partial understanding of the (COMPLEX RATIO)
742 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
745 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
746 * new feature: a build-time option (controlled by the :SB-UNICODE
747 keyword feature, enabled by default) for building the system with
748 support for the entire 21-bit character space defined by the
750 * new feature: the system now has rudimentary external-format
751 support; the primary user-visible change at this time is that
752 characters with the high bit set (such as lower-case-e-acute) will
753 print correctly to a terminal in a UTF-8 environment.
754 * minor incompatible change: BASE-CHAR no longer names a class;
755 however, CHARACTER continues to do so, as required by ANSI.
756 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
757 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
758 has been moved to the SB-EXT package (temporarily re-exported from
760 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
761 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
763 * fixed bug #351: better error-handlind and reporting for malformed
765 * fixed bug #350: bignum-printing is now more memory-efficient,
766 allowing printing of very large bignums, eg. (expt 2 10000000).
767 (reported by Bruno Haible)
768 * fixed bug #302: better primitive-type selection for intersection
770 * fixed bug #308: non-graphic characters now all have names, as
771 required. (reported by Bruno Haible)
772 * bug fix: redefining a class with different superclasses now correctly
773 removes it from the direct-subclasses of its previous superclasses.
774 (reported by David Morse)
775 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
776 new value now works. (reported by Bruno Haible)
777 * bug fix: correct canonicalization of multiple non-standard slot
778 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
779 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
780 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
781 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
782 now exists, an signals an error.
783 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
784 during macroexpansion for non-iteration variables as well. (reported
785 by Bruno Haible for CMUCL)
786 * bug fix: Cyclic structures and unprintable objects in compiler
787 messages no longer cause errors. (reported by Bruno Haible)
788 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
789 and READ-FROM-STRING all now return a primary value of NIL if
790 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
791 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
792 (reported by Bruno Haible for CMUCL)
793 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
794 do not designate a condition. (reported by Bruno Haible for
796 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
797 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
798 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
799 permitting resolution in favour of any of the conflicting symbols.
800 (reported by Bruno Haible for CMUCL)
801 * bug fix: EQUAL compiler optimizations is less aggressive on
802 strings which can potentially compare true despite having distinct
803 specialized array element types.
804 * bug fix: unit enumerations can be defined without dividing by
805 zero. (thanks to Vincent Arkesteijn)
806 * FORMAT compile-time argument count checking has been enhanced.
807 (report from Bruno Haible for CMUCL)
808 * a partial workaround for the bug 262: the compiler does not try to
809 inline-expand a local function doing RETURN-FROM from a deleted
810 BLOCK. (thanks to Peter Denno for the bug report and to David
811 Wragg for the simple test case)
812 * fixed some bugs revealed by Paul Dietz' test suite:
813 ** RENAME-PACKAGE allows all package designators as new package
815 ** constraint propagation and lambda variable substitution are
816 more cautious in dealing with partially deleted code.
817 ** compiler sometimes lost reoptimization passes.
818 ** CERROR, given a condition as condition designator, passes its
819 remaining arguments to the continue format control without
821 ** Case-altering FORMAT directives work correctly on non-ASCII
823 ** The REAL type specifier handles bounds outside the floating
824 point ranges without signalling FLOATING-POINT-OVERFLOW.
825 ** Functions with IR1-transformations can create intercomponent
826 references to global functions.
827 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
829 ** FORMAT ~R treats a nil value for its first parameter correctly.
831 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
832 * enhancement: saving cores with foreign code loaded is now
833 supported on x86/NetBSD and sparc/Linux in addition to the previously
835 * bug fix: on some platforms repeated installations caused multiple
836 copies of HTML documentation to be installed -- should not happen
837 any more. (reported by Stefan Scholl)
838 * bug fix: parsing self-recursive alien record types multiple times
839 no longer causes infinite recursion. (reported by Thomas F. Burdick,
840 original patch by Helmut Eller for CMUCL)
841 * bug fix: stack-exhaustion detection works now on NetBSD as well.
842 (thanks to Richard Kreuter)
843 * bug fix: defining classes whose accessors are methods on existing
844 generic functions in other (locked) packages no longer signals
845 bogus package lock violations. (reported by François-René Rideau)
846 * bug fix: special variables as DEFMETHOD parameters no longer have
847 associated bogus type declarations. (reported by David Wragg and
849 * bug fix: read-write consistency on streams of element-type
850 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
851 * bug fix: redefiniton of the only method of a generic function with
852 no DEFGENERIC no longer emits a full WARNING. In addition,
853 redefinition of generic functions with no DEFGENERIC to an
854 incompatible lambda list now signals an error. (thanks to Zach
856 * bug fix: DEFGENERIC now works even when there's a function of the
857 same name in an enclosing lexical environment. (thanks to Zach
859 * fixed compiler failure, caused by instrumenting code during
860 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
861 * optimization: added loop analysis and improved register allocation
862 * fixed some bugs revealed by Paul Dietz' test suite:
863 ** POSITION on displaced vectors with non-zero displacement
864 returns the right answer.
865 ** (SIMPLE-STRING) is a valid type specifier for sequence
867 ** *PRINT-LEVEL* handling for slotless structures is pedantically
869 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
870 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
872 ** The justification version of the FORMAT ~< directive treats
873 non-zero minpad parameter correctly.
875 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
876 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
877 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
878 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
879 the supported interface.
880 * new feature: Single-stepping of code compiled with DEBUG 2 or
881 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
882 * new feature: saving cores with foreign code loaded is now
883 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
884 Timothy Moore's work for CMUCL)
885 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
886 parameters to * instead of NIL if no initform is supplied.
887 (reported by Johan Bockgaard)
888 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
889 correctly when FUNCALL appears as the car of the form. Note:
890 despite this FUNCALL forms are not currently subject to
891 compiler-macro expansion. (port of Raymond Toy's fix for the
892 same from CMUCL, reported by Johan Bockgaard)
893 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
894 (thanks for Teemu Kalvas)
895 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
896 case instead of terminating the iteration (thanks for Julian
897 Squires, Sean Champ and Raymond Toy)
898 * bug fix: incorrect expansion of defgeneric that caused a style
899 warning. (thanks for Zach Beane)
900 * bug fix: slot accessor effective method computation works properly
901 for classes with multiple non-standard applicable methods on
902 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
903 * on x86 compiler supports stack allocation of results of LIST and
904 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
905 CMUCL implementation by Gerd Moellmann)
906 * fixed some bugs revealed by Paul Dietz' test suite:
907 ** FORMAT strings with both the ~<~:;~> form of the justification
908 directive and pretty-printing directives cause an error.
910 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
911 * incompatible change: the internal functions
912 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
913 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
914 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
915 instead of the old functions.
916 * new feature: on platforms where "dladdr" is available foreign
917 function names now appear in backtraces. (based on Helmut Eller's
919 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
920 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
922 * documentation: ASDF manual is now distributed with SBCL.
923 * bug fix: SBCL can now load its contributed modules with REQUIRE
924 even if the system-provided entries have been removed from
925 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
927 * bug fix: backtraces involving undefined functions or assembly
928 routines are more informative. (thanks to Brian Downing)
929 * bug fix: mutually referent alien structures now work correctly.
930 (reported by Rick Taube)
931 * bug fix: structures defined by WITH-ALIEN can be referred to
932 within other definitions in the same WITH-ALIEN.
933 * bug fix: division operators (MOD, TRUNCATE and the like) with
934 constant zero divisors and integer dividends no longer generate
936 * bug fix: provide default methods for INPUT-STREAM-P and
937 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
938 * bug fix: improve the detection and resolution of MOP metacycles
939 (where effective method computation depends on the generic function
940 having its effective method computed). (reported by Bruno Haible)
941 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
942 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
943 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
944 * bug fix: pathnames with relative directory components can be
945 represented relative to default pathnames.
946 * optimization: in taking the GCD of bignums, reduce the two bignums
947 to approximately the same size (using Euclid's algorithm) before
948 applying the more sophisticated binary GCD. (thanks to Juho
950 * optimization: COUNT on bitvectors now operates word-at-a-time.
951 * optimization: ASH with a positive, but not necessarily constant,
952 (leftwards) shift, when in a modular context, is compiled to a
954 * fixed some bugs revealed by Paul Dietz' test suite:
955 ** FORMAT variable parameters ("~V<char>") are defaulted properly
956 if the corresponding argument is NIL.
957 ** FORMAT directives accepting a minpad parameter treat negative
959 ** literal commas as character parameters to FORMAT directives are
961 ** literal spaces directly after ~<Newline> directives within a
962 format-logical-block (~:< ~@:>) do not induce :FILL-style
963 conditional newlines.
964 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
965 as specified: it no longer includes conditional newlines).
966 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
968 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
969 :PER-LINE-PREFIX argument does not evaluate to a string.
971 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
972 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
973 the manual for details; for now, package locks can be disabled by
974 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
975 if no major problems are found then it is likely that they will be
976 compiled in unconditionally.
977 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
978 unsupported operators on all platforms. To load a shared library
979 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
980 object file, link it into a shared library outside of SBCL and
981 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
983 * bug workaround: ROOM T and the GC were not working together
984 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
985 reporting facility aren't preserved. That reporting has been
986 disabled, so now until and unless someone figures out how to make it
987 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
988 * minor incompatible change: as threatened around sbcl-0.8.0, the
989 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
990 The symbols are also exported from SB-PCL for backwards
991 compatibility, but more so than before SB-PCL should be treated as
992 an implementation-internal package.
993 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
995 * the SB-SPROF contrib now works on (most) non-x86 architectures.
996 It is known as of this release not to work on the Alpha, however.
997 * fixed bug #167: errors signalled due to illegal syntax in method
998 bodies are now more legible.
999 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1000 designators and can hence be used with TYPEP.
1001 * fixed bug #333: CHECK-TYPE now ensures that the type error
1002 signalled, if any, has the right object to be accessed by
1003 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1004 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1005 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1007 * fixed bug #334: programmatic addition of slots using specialized
1008 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1009 and :ALLOCATION :CLASS slots.
1010 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1011 float exponents. (rereported by Peter Seibel)
1012 * fixed a bug: #\Space (and other whitespace characters) are no
1013 longer considered to be macro characters in standard syntax by
1014 GET-MACRO-CHARACTER.
1015 * fixed bug: initialization of condition class metaobjects no longer
1016 causes an instance of the condition to be created. (reported by
1018 * fixed bug: it is now possible to have slots such that
1019 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1020 description is neither :INSTANCE nor :CLASS.
1021 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1022 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1023 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1024 non-standard SLOT-DEFINITION-ALLOCATION values.
1025 * fixed bugs: various race conditions handling exiting threads.
1026 CL-PPCRE's thread torture test now passes.
1027 * fixed arguably-a-bug: GC time proportional to number of threads in
1028 system even when most of them are idle
1029 * optimization: improved performance of BIT and SBIT on bit-vectors.
1030 * .fasl file incompatibility: The fasl file version number has
1031 been incremented because of changes associated with package locks.
1033 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1034 * minor incompatible change: the system no longer provides
1035 optimization hints (conditions which are TYPEP
1036 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1037 mode; these hints are still emitted when higher SPEED optimization
1039 * new contrib module: a sampling profiler (profiling by statistical
1040 sampling, rather than by instrumenting functions) is available as
1041 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1042 * the behaviour of the standard function ED is now customizeable by
1043 third parties through a hook variable: see ED's documentation
1044 string for information on the protocol.
1045 * the compiler no longer emits efficiency notes for (FUNCALL X)
1046 when the type of X is uncertain under default optimization
1048 * fixed bug 276: mutating a binding of a specialized parameter to a
1049 method to something that is not TYPEP the specializer is now
1051 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1052 exhibit the required behaviour on the x86 platform. (thanks to
1053 Peter van Eynde, Eric Marsden and Bruno Haible)
1054 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1055 even for difficult arguments. (reported by Peter Graves)
1056 * fixed bug 141a: the backquote printer now descends quoted
1058 * fixed another bug in backquote printing: no more destructive
1059 modification of the form's list structure. (reported by Brian
1061 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1062 move between its address being taken and the call to
1063 interrupt_thread, fixing a crashing race condition.
1064 * the SB-POSIX contrib implementation has been adjusted so that it
1065 no longer exhibits ridiculously poor performance when constructing
1066 instances corresponding to C structs.
1068 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1069 * minor incompatible change: the sb-grovel contrib now treats C
1070 structures as alien (in the sense of SB-ALIEN) objects rather than
1071 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1072 has implications for memory management of client code
1073 (sb-grovel-returned objects must now be manually managed) and for
1074 type safety (alien objects now have full types).
1075 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1076 used to control emission of compiler diagnostics, rather than the
1077 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1078 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1079 quality should be considered deprecated.
1080 * install.sh now installs the user manual as well
1081 * (not quite a new documentable feature, but worth considering in
1082 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1083 beginnings of a semantically meaningful condition hierarchy is
1084 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1086 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1087 designator as the defaults argument.
1088 * fixed bug: Displaced arrays whose displaced-to array has become
1089 too small now cause ARRAY-DIMENSION to signal an error, providing
1090 for safer bounds-checking. (reported by Bruno Haible)
1091 * fixed bug: DEFCLASS slot definitions with identical :READER and
1092 :WRITER names now signal a reasonable error. (reported by Thomas
1094 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1096 * fixed bug: Invalid slot specification errors now print correctly.
1097 (thanks to Zach Beane)
1098 * fixed bug 320: Shared to local slot value transfers in class
1099 redefinitions now happen corrently from superclasses as
1100 well. (reported by Bruno Haible)
1101 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1103 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1104 improper lists correctly. (reported by Bruno Haible)
1105 * fixed bug 313: source-transform for <fun-name> was erroneously
1106 applied to a call of a value of a variable with name <fun-name>.
1107 (reported by Antonio Menezes Leitao)
1108 * fixed bug 307: The obsolete instance protocol ensures that
1109 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1110 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1111 remove dead unknown-values globs from the middle of the stack.
1112 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1113 easier to resume long computations after using *BREAK-ON-SIGNALS*
1114 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1115 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1116 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1117 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1118 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1119 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1121 * fixed a (fairly theoretical) bug in string printing: if
1122 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1123 does not have array-element-type equal to the most general string
1125 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1126 function name. (thanks to Nikodemus Siivola)
1127 * fixed bug: compile-time format string checker failed on
1128 non-closed ~{. (reported by Thomas F Burdick)
1129 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1130 don't warn on legal loop code involving more than one aggregate
1131 boolean. (thanks to Nikodemus Siivola)
1132 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1133 in keyword position to MAKE-PACKAGE was not being reported as
1135 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1136 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1138 * fixed bugs 280 and 312: the checking for multiple definitions in a
1139 file is less likely to become confused by uses of inline
1141 * fixed bug: the #S reader macro performs the keyword coercion
1142 specified for slot names. (reported by Kalle Niemitalo)
1143 * fixed bug: lambda lists may contain symbols whose names start with
1144 & but are not lambda-list-keywords; their occurrence triggers a
1146 * fixed bug 321: define-method-combination argument lambda lists do
1147 not cause invalid code to be generated when &optional or &aux
1148 variables have default values. (reported by Bruno Haible)
1149 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1150 have CLOS classes; this appears also to have fixed reported
1151 instability in stack exhaustion detection.
1152 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1153 MUFFLE-WARNING when no associated restart is present is now
1155 * optimization: rearranged the expansion of various defining macros
1156 so that each expands into only one top-level form in a
1157 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1159 * optimization: used a previously little-used slot in symbols to
1160 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1162 * fixed some bugs revealed by Paul Dietz' test suite:
1163 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1165 ** Fixed an optimization bug related to inheritance of initforms
1166 from local to shared slots.
1167 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1168 ** CAST optimizer forgot to flush argument derived type.
1169 ** print/read consistency on floats is now orders of magnitude
1170 more likely. (thanks also to Bruno Haible for a similar report
1172 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1173 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1174 for objects of type REAL. Make it so.
1175 ** SXHASH is specified (infelicitously) to respect similarity,
1176 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1177 it so. (thanks to Markus Ziegler)
1178 ** on the Alpha, the compiler succeeds in compiling functions
1179 returning a known number of arguments greater than 63.
1180 ** fixed handling of invalid NIL arguments in keyword position
1182 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1184 ** provided a readably-printable representation for RANDOM-STATE
1186 ** ensured that pathnames, where they have a namestring, always
1187 print using #P"..." syntax.
1189 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1190 * Support for the forthcoming 2.0 version of the NetBSD kernel
1191 running on x86 hardware has been added. (thanks to Perry
1192 E. Metzger most immediately, and others for their past work)
1193 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1194 current release version; SBCL's OpenBSD support had been broken
1195 since about the time of OpenBSD's switch to ELF binary format.)
1196 * [placeholder for DX summary]
1197 ** user code with &REST lists declared dynamic-extent, under high
1198 speed or space and low safety and debug optimization policy.
1199 * The manual has been converted to Texinfo format and the debugger
1200 chapter from the cmucl manual has been added.
1201 * A facility has been added to extract documentation strings from
1202 sbcl and store them as Texinfo-formatted snippets for inclusion in
1203 the manual (via Texinfo's @include directive)
1204 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1205 the test case to Dave Roberts)
1206 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1207 pointers. (reported by Sean Ross)
1208 * bug fix: PROFILE output is printed nicely even for large numerical
1209 values. (thanks to Zach Beane)
1210 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1211 greater than 32 handle EOF correctly.
1212 * bug fix: on X86 an immediate argument of the IMUL instruction is
1213 correctly printed in disassembly. (thanks to Lutz Euler)
1214 * bug fix: class slots in redefined classes preserve their old
1215 values. (thanks to Bruno Haible and Nikodemus Siivola)
1216 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1217 succeeds. (reported by Marco Baringer)
1218 * fixed some bugs revealed by Paul Dietz' test suite:
1219 ** READ-SEQUENCE now works on ECHO-STREAMs.
1220 ** RATIONALIZE works more according to its specification. (thanks
1223 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1224 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1225 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1226 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1227 should matter to you only if you rebind the printer control
1228 variables and then find you want different bindings in the
1229 debugger than in the ordinary execution of your program.)
1230 * The runtime build system has been tweaked to support building
1231 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1232 assembler and linker. (thanks to Nikodemus Siivola)
1233 * Unbound, undefined, undeclared variables now trigger full
1234 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1235 more often programmer error than deliberate exploitation of undefined
1237 * optimization: the hash algorithm for strings has changed to one
1238 that is less vulnerable to spurious collisions. (thanks to Juho
1240 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1241 needless bounds checking. (thanks to Juho Snellman)
1242 * optimization: implemented multiplication as a modular
1243 (UNSIGNED-BYTE 32) operation on the PPC backend.
1244 * fixed some bugs revealed by Paul Dietz' test suite:
1245 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1247 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1248 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1249 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1251 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1253 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1255 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1256 their output stream on EOF from read.
1257 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1258 have been read to end-of-file.
1259 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1261 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1262 description of determination of which consecutive characters
1264 ** Printing the "Space" character with escaping on now yields "#\\ ",
1265 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1266 ** Reading floating-point numbers with *READ-BASE* set to a number
1267 less than 10 works correctly.
1268 ** Reading floating-point numbers with *READ-BASE* set to a number
1269 more than 10 works correctly.
1270 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1271 the readtable currently in effect.
1273 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1274 * minor incompatible change: parsing of namestrings on a physical
1275 (Unix) host has changed; numbers after the final #\. in a
1276 namestring are no longer interpreted as a version field. This is
1277 intented to be largely invisible to the user, except that the
1278 meaning of the namestring "*.*.*" has changed: it now refers to a
1279 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1280 should usually be replaced by
1281 (make-pathname :name :wild :type :wild :version :wild)
1282 with the added benefit that this is more likely to be portable.
1283 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1284 option to OPEN now signals an error if the file being opened
1285 exists; this may have an impact on existing code.
1286 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1287 signals received, on the PowerPC platforms (both Linux and
1288 Darwin). (thanks to Pierre Mai for pointing out the location of
1290 * several fixes on OS X: The system now builds and runs cleanly on
1291 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1292 (thanks to Brian Mastenbrook)
1293 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1294 second-resolution: integer multiples of 1/3600 between -24 and 24.
1295 (thanks to Vincent Arkesteijn)
1296 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1297 type when called with 1 argument; PEEK-CHAR checked type of
1298 PEEK-TYPE only after having read first character from a
1299 stream. (reported by Peter Graves)
1300 * bug fix: the garbage collector now has much better locality
1301 behaviour, and in particular no longer treats all memory as being
1302 exhausted when many small objects point to each other in a deeply
1304 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1305 recognized as being TYPEP their class.
1306 * bug fix: the PUSHNEW documentation string has been corrected.
1307 (thanks to Vincent Arkesteijn)
1308 * bug fix: defaulting of the value for the last of an atypically
1309 large number of multiple values being bound was not being
1310 performed correctly on the Alpha or PPC platforms
1311 * optimization: implemented multiplication as a modular
1312 (UNSIGNED-BYTE 32) operation on the x86 backend.
1313 * optimization: SEARCH on simple-base-strings can now be open-coded.
1314 (see also contrib/compiler-extras.lisp for inspiration for
1315 teaching the compiler about the Boyer-Moore algorithm).
1316 * value, returned by MAX (and MIN) called with several EQUALP, but
1317 not EQL, arguments now does not depend on compiler settings.
1318 * fixed some bugs revealed by Paul Dietz' test suite:
1319 ** in stack analysis liveness information is propagated from
1320 non-local entry points.
1321 ** pathwise CAST removing failed when the CAST node did not start
1323 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1324 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1326 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1327 host is already defined.
1328 ** RENAME-FILE works on streams instead of signalling an internal
1330 ** PEEK-CHAR uses the current readtable when determining whether
1331 or not a character is whitespace.
1332 ** MERGE-PATHNAMES handles the case when the pathname does not
1333 specify a name while the default-pathname specifies a version.
1334 ** Pathnames now stand a better chance of respecting print/read
1336 ** Attempting to use standardized file system operators with a
1337 pathname with invalid :DIRECTORY components signals a
1339 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1341 ** DIRECTORY on logical pathnames is more correct.
1342 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1343 signal a TYPE-ERROR if their argument is not a stream.
1344 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1345 designator argument does not designate a stream.
1346 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1347 examining the synonym.
1348 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1350 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1351 element-type larger than ([UN]SIGNED-BYTE 32).
1353 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1354 * When built with the :SB-FUTEX feature, threaded builds now take
1355 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1356 for faster/more reliable mutex and condition variable support.
1357 * Incompatible change (but one you probably shouldn't have been using
1358 anyway): the interface and code for arbitrating between multiple
1359 threads in the same user session has been redesigned.
1360 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1361 error when called without an explicit environment argument.
1362 (thanks to Nikodemus Siivola)
1363 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1364 confused about their position. (thanks to Adam Warner and Gerd
1366 * bug fix: Pretty printing backquoted forms with unquotations in the
1367 argument list position of various code constructs such as LAMBDA
1368 now works correctly. (reported by Paul Dietz)
1369 * bug fix: Pretty printing unquotations no longer loses all
1370 stream position information.
1371 * optimization: performance of string output streams is now less
1372 poor for multiple small sequence writes.
1373 * optimization: performance of CSUBTYPEP in the presence of complex
1374 expressions involving CONS and NOT many times has been improved.
1375 (reported by Paul Dietz)
1376 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1378 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1379 streams for the REPL, for the debugger, and so on. (thanks to
1381 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1382 * fixed some bugs revealed by Paul Dietz' test suite:
1383 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1384 is ignored if it is too small, rather than propagating through
1385 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1386 ** extremely complex negations of CONS types were not being
1387 sufficiently canonicalized, leading to inconsistencies in
1389 ** VALUES tranformer lost derived type.
1391 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1392 * fixed a bootstrapping bug: the build process no longer assumes
1393 that the various BOOLE-related constants have the same value in
1394 host and target lisps. (noted by Paul Dietz' test suite on an
1395 SBCL binary built from CLISP)
1396 * The system can now be dynamically linked on the MIPS platform,
1397 which enables dynamic loading of foreign code from Lisp. (thanks
1398 to Ralf Baechle for discussions on the MIPS ABI)
1399 * The system now records debugging information for its own source
1400 files in a filesystem-position-independent manner, relative to
1401 the "SYS" logical host.
1402 * fixed a compiler bug: MV-LET convertion did not check references
1403 to the "max args" entry point. (reported by Brian Downing)
1404 * tweaked disassembly notes to be less confident about proclaiming
1405 some instruction as an LRA. (thanks to Brian Downing)
1406 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1407 now each have their own history, command character, and other
1408 characteristics. (thanks to David Lichteblau)
1409 * fixed some bugs revealed by Paul Dietz' test suite:
1410 ** compiler failure in compiling LOGAND expressions including a
1412 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1413 shift greater than 32.
1414 ** FLUSH-DEST did not mark blocks for type check regeneration.
1415 ** HANDLER-CASE failed to accept declarations in handler clauses
1416 in some circumstances.
1418 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1419 * New code in contrib/sb-introspect (still probably not entirely
1420 stable yet) provides some support for smart Lisp development
1421 environments like SLIME.
1422 * The conditions signalled for errors occurring when loading .fasl
1423 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1424 in a way which should help ASDF recover gracefully.
1425 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1426 stuff has been cleaned up. If you code contrib/ stuff, this might
1427 affect you, and you can look at contrib/README, contrib/STANDARDS,
1428 and/or the 0.8.4.27 diff to check.
1429 * In full calls the compiler now does not generate checks for declared
1430 argument types for all arguments.
1431 * various threading fixes
1432 ** and some experimental patches which didn't make it into
1433 the main tree for this release, but which are shipped in
1434 contrib/experimental-thread.patch as a possible fix for some
1435 failures (deadlock, spinning...) in GC-intensive multithreaded
1437 * fixed PPC build problem (source code incompatibility of different
1438 library versions): added offsetof() hackery which attempts to divine
1439 where glibc maintainers put uc_mcontext today
1440 * fixed bug 282: compiler does not trust type assertions while passing
1441 arguments to a full call.
1442 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1443 &OPTIONAL VALUES type parameter.
1444 * fix bug 214: algorithm for noting rejected templates is now more
1445 similar to that of template seletion. (also reported by rydis on
1447 * fixed bug 141b: printing backquoted information readably and prettily
1448 inserts a space where necessary.
1449 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1450 (CHARACTER 10) are now reported as errors, rather than propagated
1451 as unknown types. (reported by piso on #lisp)
1452 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1453 with values NIL and :ERROR. (thanks to Milan Zamazal)
1454 * fixed bug 191c: CLOS now does proper keyword argument checking as
1455 described in CLHS 7.6.5 and 7.6.5.1.
1456 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1457 longer raise an error; further, using a list as a for-as-arithmetic
1458 counter now raises a meaningful error.
1459 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1460 now understood by sequence creation functions such as MAKE-SEQUENCE
1462 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1463 a STRING-INPUT-STREAM.
1464 * compiler enhancement: SIGNUM is now better able to derive the type
1466 * type declarations inside WITH-SLOTS are checked. (reported by
1468 * fixed some bugs revealed by Paul Dietz' test suite:
1469 ** incorrect optimization of TRUNCATE for a positive first
1470 argument and negative second.
1471 ** compiler failure in let-convertion during flushing dead code.
1472 ** compiler failure while deriving type of TRUNCATE on an
1473 interval, containing 0.
1474 ** ASH of a negative bignum by a negative bignum count now returns
1476 ** intersection of CONS types now canonicalizes properly, fixing
1477 inconsistencies in SUBTYPEP.
1479 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1480 * incompatible change: The --disable-debugger command line
1481 option now clobbers the debugger at a more fundamental
1482 level, by redefining #'INVOKE-DEBUGGER instead of by
1483 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1484 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1485 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1486 enter the debugger REPL and then suffer recursive errors
1487 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1488 while under the new system, BREAK in --disable-debugger mode
1489 terminates the system just as an unhandled error would.
1490 * fixed compiler performance when processing loops with a step >1;
1491 * bug fix: DOCUMENTATION now retrieves generic function
1492 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1493 support has been systematized, and now supports the methods
1494 specified by ANSI, along with a default method and a method for
1495 slot documentation. (reported by Nathan Froyd)
1496 * bug fix: effective methods associated with a generic function are
1497 no longer cached over a change of that generic function's method
1498 combination. (reported by Andreas Fuchs)
1499 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1500 names a non-existent directory. (thanks to Andreas Fuchs)
1501 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1502 the PPC platform, lead to stack corruption; this has been fixed.
1503 (reported by Rainer Joswig)
1504 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1505 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1506 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1507 arithmetic in general, is now much more reliable on the PPC
1509 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1510 platform now returns the right answer.
1511 * optimization: restored some effective method precomputation in
1512 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1513 precomputation is now tunable.
1514 * optimization: compiler-internal data structure use has been
1515 reviewed, and changes have been made that should improve the
1516 performance of the compiler by about 20%.
1517 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1518 simple-base-strings and simple-bit-vectors is improved.
1519 * optimization: the optimization of 32-bit logical and arithmetic
1520 functions introduced in version 0.8.3 on the x86 has been
1521 implemented on the mips, ppc and sparc platforms; an
1522 implementation of the same facility, but for 64-bit arithmetic,
1523 has been added for the alpha.
1524 * microoptimization: the compiler is better able to make use of the
1525 x86 LEA instruction for multiplication by constants.
1526 * bug fix: in some situations compiler did not report usage of
1527 generic arithmetic in (SPEED 3) policy.
1528 * bug 145b fix: compiler used wrong type specifier while converting
1529 MEMBER-types to numeric.
1530 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1532 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1533 index argument now works properly on the Alpha platform.
1534 * bug fix: floating point exception treatment on the Alpha platform
1536 * bug fix: FILE-POSITION works much better on string input and
1537 output streams. (thanks to Nikodemus Siivola)
1538 * bug fix: many threading/garbage collection symptoms sorted.
1539 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1540 might be pseudo-atomic.
1541 * internal change: Stopping for GC is now done with signals not
1542 ptrace. GC is now done in whichever thread wanted it, instead of
1544 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1546 * bug fix: result form in DO is not contained in the implicit
1548 * incompatible change: ICR structure is changed; the value part of
1549 CONTINUATION is now called LVAR; corresponding functions are
1550 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1551 * added type deriver for ISQRT (thanks to Robert E. Brown).
1552 * bug fix: better support for loading from the command line when an
1553 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1555 * fixed some bugs revealed by Paul Dietz' test suite:
1556 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1557 ** ROUND and FROUND now give the right answer when given very
1558 small float arguments.
1559 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1561 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1562 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1563 ** LCM should return a non-negative integer.
1564 ** PARSE-INTEGER returned the index of a terminator instead of the
1565 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1566 ** PARSE-INTEGER returned an incorrect index being applied to a
1568 ** LCM with two arguments of 0 returns 0 rather than signalling
1570 ** unsigned addition of a 32-bit constant with the high bit set no
1571 longer causes an internal compiler error on the x86.
1572 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1573 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1574 with negative last argument.
1575 ** byte specifiers with zero size and position no longer cause
1576 an error during type derivation.
1577 ** bignum multiplication on the Alpha platform now returns the
1579 * porting: The system now builds on SuSE AMD64, although it still
1580 generates a 32-bit binary.
1581 * .fasl file incompatibility: The fasl file version number has
1582 been incremented (because of the changes to internal compiler
1583 data structures referred to above).
1585 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1586 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1587 more accurately, on the Darwin kernel running on PowerPC hardware.
1588 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1589 * Compiler code deletion notes now signal a condition of type
1590 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1591 an associated MUFFLE-WARNING restart.
1592 * The compiler now performs limited argument count validation of
1593 constant format strings in FORMAT, and where appropriate in ERROR,
1594 CERROR and WARN. (thanks to Gerd Moellmann)
1595 * New ASDF-INSTALL contrib can be used for automatic download and
1596 installation of third-party Lisp code from CCLAN or other sites
1598 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1599 which forces another thread to execute a function supplied by the
1601 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1602 now accept and act upon their :ELEMENT-TYPE keyword argument.
1603 (reported by Martin Atzmueller, Edi Weitz)
1604 * bug fix: FILE-POSITION now accepts position designators up to
1605 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1606 is the greater. (thanks to Patrik Nordebo)
1607 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1608 Kalle Olavi Niemitalo)
1609 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1610 printable. (reported by Eric Marsden)
1611 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1612 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1613 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1614 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1615 (thanks to Stig Sandoe)
1616 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1617 UNREAD-CHAR now correctly includes the unread character in the
1618 target sequence. (thanks to Gerd Moellmann)
1619 * bug fix in threaded builds: the system can now be suspended and
1620 resumed by shell job control with minimal disruption.
1621 * bug fixes in times and timezones >2038AD
1622 * better handling of "where is GNU make?" problem in build scripts
1623 (thanks to Nikodemus Siivola)
1624 * new optimization: inside a named function any reference to a
1625 function with the same name is considered to be a self-reference;
1626 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1627 optimization quality.
1628 * new optimization on x86: logical functions and + now have
1629 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1630 used when the result is truncated to 32 bits.
1631 * VALUES declaration is partially enabled.
1632 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1633 * fixed some bugs revealed by Paul Dietz' test suite:
1634 ** The system now obeys the constraint imposed by
1635 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1636 types form a lattice under type intersection.
1637 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1638 ** ASSOC now ignores NIL elements in an alist.
1639 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1640 and (1+ MOST-POSITIVE-FIXNUM) answers.
1641 ** The addition of a method with invalid qualifiers to a generic
1642 function does not cause an error to be signalled immediately;
1643 a warning is signalled, and the error is generated only on
1644 calling the generic function.
1645 * changed .fasl file version number, in part to add type codes for
1646 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1647 obscure ANSI requirements
1649 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1650 * fixed bug 148: failure to inline-expand a local function left
1651 garbage, confusing the compiler.
1652 * fixed bugs 3cd: structure slot readers perform type check if the
1653 slot can have an invalid value (i.e. it is either not initialized
1654 or can be written with a less specific slot writer).
1655 * bug fix: the compiler now traps array references to elements off
1656 the end of an array; previously, the bounds checking in some
1657 circumstances could go off-by-one.
1658 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1660 * type declarations for array element types now obey the description
1661 on the CLHS page "Declaration TYPE", as per discussions on
1662 sbcl-help around 2003-05-08. This means that a declaration
1663 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1664 declaration, all references to BAR will be asserted or assumed
1665 (with THE, so dependent on compiler policy) to involve objects of
1666 type FOO. Note that no such declaration is implied in
1667 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1668 * declared types of functions from the "Conditions"
1669 chapter. (reported by Paul Dietz)
1670 * bug fix: CERROR accepts a function as its first argument.
1671 * bug fix: NTH an NTHCDR accept a bignum as index
1672 arguments. (reported by Adam Warner)
1673 * optimization: character compare routines now optimize comparing
1674 against a constant character. (reported by Gilbert Baumann)
1675 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1676 argument now works properly on the MIPS platform.
1677 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1678 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1679 declared to have a functional type, does not cause an error
1681 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1682 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1683 * fixed bug: if last continuation of a deleted block has a
1684 destination, this destination should be deleted too. (reported by
1686 * fixed a bug in the bootstrap process: the host compiler's values
1687 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1688 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1689 test case from Patrik Nordebo)
1690 * improved the ability of the disassembler on the PPC platform to
1691 provide helpful disassembly notes.
1692 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1693 the class in more cases than previously.
1694 * bug fix: FILE-POSITION now understands :START and :END for
1695 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1696 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1697 8) data. (thanks to David Lichteblau)
1698 * bug fix: it is possible to add a method to a generic function
1699 without lambda list.
1700 * bug fix: reader failed to signal END-OF-FILE inside an
1701 object representation. (reported by Nikodemus Siivola)
1702 * fixed some bugs revealed by Paul Dietz' test suite:
1703 ** LAST and [N]BUTLAST should accept a bignum.
1704 ** condition slot accessors are methods.
1705 ** (VECTOR NIL) is a subtype of STRING.
1707 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1708 * minor incompatible change: some nonsensical specialized lambda
1709 lists (used in DEFMETHOD) which were previously ignored now signal
1711 * minor incompatible change: the system is now aware of the types of
1712 variables in the COMMON-LISP package, and will signal errors for
1713 most violations of these type constraints (where previously they
1714 were silently accepted).
1715 * minor incompatible change: COMPILE-FILE now uses the freedom
1716 afforded (ANSI 3.2.2.3) to use derived function types for
1717 functions defined in the same file. This also permits the system
1718 to warn on static type mismatches and function
1719 redefinition. (Currently it does not work with high DEBUG level.)
1720 * minor incompatible change: VALUES declaration is disabled.
1721 * When issuing notes, the compiler now signals a condition of type
1722 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1723 restart for use in user handlers. It is expected that the
1724 COMPILER-NOTE condition will eventually become a condition
1725 supertype to a hierarchy of note types, which will then be
1726 handleable in a similar fashion. However, at the moment, no such
1727 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1728 but it's an implementation detail, not a classification for the
1730 * Changes in type checking closed the following bugs:
1731 ** type checking of unused values (192b, 194d, 203);
1732 ** template selection based on unsafe type assertions (192c, 236);
1733 ** type checking in branches (194bc).
1734 * A short form of VALUES type specifier has ANSI meaning (it has
1735 increased the number of situations when SBCL cannot perform type
1737 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1738 keywords or constants is permissible.
1739 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1740 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1741 classes. (thanks to Antonio Martinez)
1742 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1743 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1744 argument to a pretty-print stream. Instead, it leaves any such
1745 operations to DESCRIBE-OBJECT methods.
1746 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1748 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1749 lambda lists. (thanks to David Lichteblau)
1750 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1751 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1752 (thanks to Gerd Moellmann)
1753 * fixed bug 246: increased compilation speed of long
1754 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1756 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1758 * DEFCONSTANT now throws a condition of type
1759 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1760 constant to a non-EQL value; CONTINUE and ABORT restarts
1761 respectively change and preserve the value.
1762 * fixed bug 63: The code walker, part of the implementation of CLOS,
1763 is now better at handling symbol macros.
1764 * bug fix: There is no longer an internal implementation type named
1765 CL:LENGTH. (reported by Raymond Toy)
1766 * bug fix: In macro-like defining macros/special operators the
1767 implicit block does not enclose the lambda list.
1768 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1769 enclosed in parentheses) are not suitable as type specifiers, and
1770 their use properly signals an error now.
1771 * bug fix: An argument count mismatch for a type specifier in code
1772 being compiled no longer causes an unhandled error at compile
1773 time, but signals a compile-time warning.
1774 * fixed simple vector readable printing
1775 * bug fix: DESCRIBE takes more care over whether the class
1776 precedence list slot of a class is bound before accessing it.
1777 (reported by Markus Krummenacker)
1778 * bug fix: FORMATTER can successfully compile pretty-printer format
1779 strings which use variants of the ~* directive inside.
1780 * bug fix: SEARCH now applies its TEST predicate to the elements of
1781 the arguments in the correct order. (thanks to Wolfhard Buss)
1782 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1783 in type inference. (thanks to Robert E. Brown)
1784 * bug fix: Reading in symbols with an explicit package name of ""
1785 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1786 * fixed some bugs revealed by Paul Dietz' test suite:
1787 ** NIL is now allowed as a structure slot name.
1788 ** Arbitrary numbers, not just REALs, are allowed in certain
1789 circumstances in LOOP for-as-arithmetic clauses.
1790 ** Multiple class redefinitions before slot access no longer
1791 causes a type error.
1792 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1793 association between the name and a class.
1794 ** Generic functions with non-standard method-combination and over
1795 five methods all of which return constants no longer return NIL
1796 after the first few invocations. (thanks to Gerd Moellmann)
1797 ** CALL-NEXT-METHOD with no arguments now passes the original
1798 values of the arguments, even in the presence of assignment.
1799 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1801 ** DISASSEMBLE works with closures and funcallable instances.
1802 ** ADD-METHOD now returns the generic function, not the new method.
1803 ** FIND-METHOD signals an error if the lengths of the specializers
1804 is incompatible with the generic function, even if the ERRORP
1806 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1807 which its argument is a member.
1808 ** DEFCLASS only redefines the class named by its class-name
1809 argument if that name is the proper name of the class;
1810 otherwise, it creates a new class.
1811 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1812 of the UNBOUND-SLOT condition to the name of the slot.
1813 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1814 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1815 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1816 SLOT-MAKUNBOUND in the specified fashion.
1818 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1819 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1820 cross-compilation host. As a consequence, we can now bootstrap our
1821 way up to SBCL starting with a bare gcc toolchain and human-readable
1822 source code (first the source to CLISP, then the source to SBCL).
1823 * A contributed module containing a partial implementation of the
1824 simple-streams interface has been included. (thanks to Rudi
1826 * A contributed module implementing the RFC1321 Message Digest
1827 Algorithm, known as MD5, has been included.
1828 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1829 no longer has any effect, as the code controlled by this feature
1830 has been deleted. (As far as we know, no-one has ever built using
1831 this feature, and its semantics were confused in any case).
1832 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1833 work on conditions (as required by the ANSI specification),
1834 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1835 expected behaviour on conditions. Users should note, however,
1836 that such behaviour is not required by the ANSI specification,
1837 and so use of this behaviour may render their code unportable.
1838 * fixed some bugs revealed by Paul Dietz' test suite:
1839 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1841 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1842 ** SXHASH on condition objects no longer returns NIL.
1843 ** :ALLOCATION :CLASS slots are better treated; their values are
1844 updated on class redefinition, and initforms inherited from
1845 superclasses are applied.
1846 ** REMOVE-METHOD returns its generic function argument even when
1847 no method was removed.
1848 ** SHARED-INITIALIZE now initializes the values of the requested
1849 slots, including those with :ALLOCATION :CLASS.
1850 ** ALLOCATE-INSTANCE now works on structure classes defined via
1851 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1853 ** SLOT-EXISTS-P now works on conditions, as well as structures
1855 ** MAKE-LOAD-FORM now has the required methods on
1856 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1857 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1858 keyword, and now implements the SLOT-NAMES argument.
1859 ** methods with &OPTIONAL arguments no longer allow too many
1860 arguments to be passed in the call without error.
1861 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1862 option is consistent with the required arguments of the generic
1863 function lambda list.
1864 * bug fix: REQUIRE accepts a string designator. (Thanks to
1866 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1867 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1868 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1869 * bug fix: The compiler now checks for duplicated variables in macro
1871 * bug fix: SETQ on globals returns the correct value.
1872 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1873 not a COMPILER-ERROR (followed by some other strange error on
1874 choosing the CONTINUE restart).
1875 * bug fix: make.sh and friends are now more consistent in the way that
1876 they look for GNU "make".
1878 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1879 * experimental native threads support (on x86 Linux >=2.4 only).
1880 This is not compiled in by default: you need to add :SB-THREAD to
1881 the target features. See the "Beyond ANSI" chapter of the manual
1883 * fix for longstanding nonANSIism: The old distinction between
1884 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1885 The return value from CL:FIND-CLASS is now a CLOS class, and
1886 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1887 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1888 * An interface to the MetaObject Protocol, as described in Kiczales,
1889 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1890 MIT Press, 1991, is available from the SB-MOP package.
1891 * incompatible change: the SB-PCL package should now be considered
1892 a private implementation detail, and no longer a semi-private MOP
1894 * minor incompatible change: due to rearrangement for threads, the
1895 control stack and binding stack are now allocated at arbitrary
1896 addresses instead of being hardcoded per-port. Users affected by
1897 this probably have to be doing advanced things with shared
1898 libraries, and will know who they are.
1899 * minor incompatible change: Previously, all --eval forms used were
1900 processed with READ before any of them were processed with EVAL.
1901 Now each --eval form is processed with both READ and EVAL before
1902 the next --eval form is processed. (Thus package operations like
1903 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1904 work as the user might reasonably expect.)
1905 * minor incompatible change: *STANDARD-INPUT* is now only an
1906 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1908 * minor incompatible change: Y-OR-N-P is now character-oriented,
1909 not line oriented. Also, YES-OR-NO-P now works without errors.
1910 (thanks to Antonio Martinez)
1911 * sb-aclrepl module improvements: an integrated inspector, added
1912 repl features, and a bug fix to :trace command.
1913 * Known functions, which cannot be open coded by the backend, are
1914 considered to be able to check types of their arguments. (fixing
1915 a bug report by Nathan J. Froyd)
1916 * fixed a bug in computing method discriminating functions: It is
1917 now possible to define methods specialized on classes which have
1918 forward-referenced superclasses. (thanks to Gerd Moellmann)
1919 * fixed evaluation order in optional entries (reported by Gilbert
1921 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1922 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1923 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1924 required-by-AMOP NAME argument, as well as CLASS and
1925 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1926 * fixed bug 20: DEFMETHOD can define methods using names that are
1927 not the proper names of classes to designate class specializers.
1928 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1929 Unix file descriptors, instead of blowing up. (thanks to Antonio
1931 * Garbage collection refactoring: user-visible change is that a
1932 call to the GC function during WITHOUT-GCING will not do garbage
1933 collection until the end of the WITHOUT-GCING. If you were doing
1934 this you were probably losing anyway.
1935 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1936 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1937 TYPEP the latter but not the former.
1938 * The compiler issues a full WARNING for calls to undefined functions
1939 with names from the CL package.
1940 * MAP-INTO for a vector destination is open coded. (reported by
1941 Brian Downing on c.l.l)
1942 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1943 documentation string.
1944 * fixed some bugs revealed by Paul Dietz' test suite:
1945 ** COPY-ALIST now signals an error if its argument is a dotted
1947 ** Condition slots are now accessed more correctly in the presence
1948 of multiple initargs for a given slot.
1949 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1950 exclude restarts of the same name associated with a different
1952 ** DEFCLASS of forward-referenced classes with another
1953 forward-referenced class in the superclasses list no longer
1955 ** Condition slots are now initialized once each, not multiple
1956 times. (thanks to Gerd Moellmann)
1957 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1959 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1960 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1961 arguments contain duplicated elements.
1962 ** RESTART-CASE understands local macros.
1963 ** RESTART-CASE associates exactly its own restarts with a condition.
1964 ** ENDP in safe mode checks its argument to be of type LIST.
1965 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1966 in question is unbound.
1967 ** Optimized MAKE-INSTANCE functions no longer cause internal
1968 assertion failures in the presence of duplicate initargs.
1969 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1970 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1971 propagated even in the ctor optimized implementation of
1973 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1975 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1976 * a better implementation of SXHASH on (simple) bit vectors,
1977 measured both in execution speed and in distribution of results
1978 over the positive fixnums, has been installed. Likewise, a better
1979 implementation of EQUAL for simple bit vectors is now available.
1980 * fixed CEILING optimization for a divisor of form 2^k.
1981 * fixed bug 240 (emitting extra style warnings "using the lexical
1982 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1983 by Antonio Martinez)
1984 * fixed SXHASH, giving different results for NIL depending on type
1985 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1986 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1987 variable. (found by Rolf Wester)
1988 * SBCL does not ignore type declarations for special
1989 variables. (reported by rif on c.l.l 2003-03-05)
1990 * some bug fixes in contrib/sb-aclrepl/
1991 * fixed some bugs revealed by Paul Dietz' test suite:
1992 ** a bug in the CONS type specifier, whereby the CAR and CDR
1993 types got intertwined, has been fixed;
1994 ** the type system is now able to reason about the interaction
1995 between INTEGER and RATIO types more completely;
1996 ** APPEND, [N]REVERSE and NRECONC check that those their
1997 arguments, which must be proper lists, are really so;
1998 ** An array specialized to be unable to hold elements has been
1999 implemented, as required -- yes, really -- by ANSI;
2000 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2001 on malformed property lists;
2003 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2004 * incompatible packaging change: in line with Unix convention,
2005 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2006 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2007 * REQUIRE and PROVIDE are now optionally capable of doing something
2008 useful. See the documentation string for REQUIRE.
2009 * infrastructure for a managed SBCL contrib system: contributed
2010 modules in this release include:
2011 ** the ASDF system definition facility;
2012 ** an interface to the BSD Sockets API;
2013 ** an ACL-like convenience interface to the repl;
2014 (thanks to Kevin Rosenberg)
2015 ** an implementation of ROTATE-BYTE, with efficient implementation
2017 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2018 gives a closer approximation to the right answer than previously.
2019 (thanks to Raymond Toy)
2020 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2021 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2022 optional environment arguments, as required by ANSI.
2023 * fixed bugs in other functions taking environment objects, allowing
2024 calls with an explicit NIL environment argument to be compiled
2026 * fixed bug 228: primary return values from
2027 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2028 COMPILE or FUNCTION.
2029 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2030 :TYPE will no longer signal errors on innocuous objects.
2031 * fixed bug 231b: SETQ is better at respecting type declarations in
2032 the lexical environment.
2033 * fixed a bug in DEFCLASS: classes named by symbols with no or
2034 unprintable packages can now be defined.
2035 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2036 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2037 * fixed compiler failure related to checking types of functions.
2038 (reported by Robert E. Brown)
2039 * the compiler is now much more consistent in its error-checking
2040 treatment of bounding index arguments to sequence functions: in
2041 (SAFETY 3) code, errors will be signalled in almost all cases if
2042 invalid sequence bounding indices are passed to functions defined
2043 by ANSI to operate on sequences.
2044 * fixed a bug in the build procedure: documentation of SBCL-specific
2045 packages is now preserved and available in the final Lisp image.
2046 * lifted FDEFINITION lookup out of loops in the implementation of
2047 many list operations. (thanks to Robert E. Brown)
2048 * fixed a bug in the reader: the #n# reader macro now works for
2049 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2050 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2051 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2052 E. Brown and Tony Martinez respectively)
2053 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2054 SLOT-BOUNDP: in particular, it is now able to optimize them much
2055 better, and is now not vulnerable to having packages renamed.
2056 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2057 always called when a slot is not present in an instance. (thanks
2059 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2060 longer signal an error on unreading a character following EOF on
2061 the previous constituent stream. (thanks to Tony Martinez)
2062 * fixed some bugs revealed by Paul Dietz' test suite:
2063 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2064 not just nonnegative fixnums;
2065 ** the logical bit-array operators such as BIT-AND now accept an
2066 explicit NIL for their "opt-arg" argument (to indicate a
2067 freshly-consed result bit-array);
2068 ** ELT now signals an error on an invalid sequence index in safe
2070 ** the type system is now cleverer about negations of numeric
2071 types, and consequently understands the BIGNUM and RATIO types
2073 ** the type system is now cleverer about the interaction between
2074 INTEGER and RATIO types: while bugs still remain, many more
2075 cases are accurately computed;
2076 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2077 if it is in the last clause;
2078 ** CONSTANTLY now correctly returns a side-effect-free function in
2080 ** DECLARE is no longer treated as a special-operator; in
2081 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2082 * incremented fasl file version number due to the change in the
2083 DEFSTRUCT-SLOT-DESCRIPTION structure.
2085 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2086 * minor incompatible change: code processed by the "interpreter" or
2087 EVAL now has a compilation optimization policy of (DEBUG 2)
2088 (changed from (DEBUG 1)) to improve debuggability of interactive
2089 development, and to allow the use of the debug RETURN command in
2091 * an experimental implementation of the RETURN command for the
2092 debugger has been included. (thanks to Frederik Kuivinen)
2093 * fixed bug 62: constraints were not propagated into a loop.
2094 * fixed bug in embedded calls of SORT (reported and investigated by
2096 * fixed some bugs revealed by Paul Dietz' test suite:
2097 ** printing and reading of arrays with some dimensions having
2098 length 0 (thanks to Gerd Moellmann);
2099 ** BOA constructor with &AUX argument without a default value does
2100 not cause a type error;
2101 ** CONSTANTP now returns true for all self-evaluating objects.
2103 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2104 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2105 accessors that are related by inheritance, as specified in the
2106 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2107 Valtteri Vuorikoski)
2108 * The compiler is now able to inline functions that were defined in
2109 a complex lexical environment (e.g. inside a MACROLET).
2110 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2112 * Support for the upcoming FreeBSD-5.0 release has been included.
2113 (thanks to Dag-Erling Smorgrav)
2114 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2115 effect when it is not in a toplevel context.
2116 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2117 stand a better chance of being correct. (thanks to Gerd
2119 * fixed bug in COERCE, which now signals an error on coercing a
2120 rational to a bounded real type which excludes the expected
2122 * The compiler is now able to derive types more accurately from the
2123 COERCE and COMPILE functions.
2124 * fixed bug 223: functional binding is considered to be constant
2125 only for symbols in the CL package.
2126 * fixed bug 231: SETQ did not check the type of a variable being set
2127 (reported by Robert E. Brown)
2128 * A new optimization for MAKE-INSTANCE has been included, fixing
2129 various bugs (including relating to :ALLOCATION :CLASS slots and
2130 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2132 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2133 ** As required by ANSI, LOOP now disallows anonymous collection
2134 clauses such as COLLECT I in conjunction with aggregate boolean
2135 clauses such as THEREIS (= I 1);
2136 ** LOOP now signals an error when any variable is reused in the
2137 same loop (including the potentially useful construct analogous
2138 to WITH A = 1 WITH A = (1+ A);
2139 ** IT is only a special loop symbol within the first clause of a
2140 conditional loop clause;
2141 ** LOOP with a typed iteration variable over a hashtable now
2142 signals a type error iff it should.
2143 * fixed some other bugs revealed by Paul Dietz' test suite:
2144 ** FILE-STREAM now names the class previously known as FD-STREAM;
2145 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2146 argument) no longer signals an error;
2147 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2148 of the slot symbol, rather than using the current package
2149 ((:CONC-NAME "") continues to intern the slot's name in the
2151 * incremented fasl file version number, because of the incompatible
2152 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2153 of the new implementation of DEFINE-COMPILER-MACRO.
2155 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2156 * Support for building SBCL for MIPS platforms running in
2157 little-endian mode has now been checked in, and basic
2158 functionality on said platforms verified.
2159 * minor incompatible change: PCL now records the pathname of a file
2160 in which methods and the like are defined, rather than its
2162 * minor incompatible change: TRUENAME now considers the truename of
2163 a file naming a directory to be the pathname with :DIRECTORY
2164 component indicating that directory.
2165 * minor incompatible change: a NAMED clause in the extended form of
2166 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2167 reason for the previous behaviour is unclear.
2168 * more systematization and improvement of CLOS and MOP conformance
2169 in PCL (thanks to Gerd Moellman and Pierre Mai):
2170 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2172 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2173 primary methods with no specializers;
2174 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2176 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2177 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2178 FORWARD-REFERENCED-CLASSes; error reporting on
2179 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2181 ** SXHASH on CLOS instances now uses a slot internal to the
2182 instance to return different numbers on distinct instances,
2183 while preserving the same return value through invocations of
2185 ** DEFMETHOD signals errors when methods with longer incongruent
2186 lambda lists are added to generic functions;
2187 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2188 CLASS, as specified in AMOP;
2189 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2190 on the order returned by the primary method for classes of
2191 class STANDARD-CLASS;
2192 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2193 * fixed some bugs shown by Paul Dietz' test suite:
2194 ** DOLIST puts its body in TAGBODY;
2195 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2197 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2198 value producing form;
2199 ** if more variables are given to PROGV than values, extra
2200 variables are bound and made to have no value;
2201 ** NSUBSTITUTE on list arguments gets the right answer with
2203 ** ELT signals an error of type TYPE-ERROR when the index argument
2204 is not a valid sequence index;
2205 ** LOOP signals (at macroexpansion time) an error of type
2206 PROGRAM-ERROR when duplicate variable names are found;
2207 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2208 ** FUNCALL of special-operators now cause an error of type
2210 ** PSETQ now works as required in the presence of side-effecting
2211 symbol-macro places;
2212 ** NCONC accepts any object as its last argument;
2213 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2215 ** loop-for-as-package does not require a package to be explicitely
2217 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2219 * fixed bug 166: compiler preserves "there is a way to go"
2220 invariant when deleting code.
2221 * fixed bug 172: macro lambda lists with required arguments after
2222 &REST arguments now cause an error to be signalled. (thanks to
2224 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2225 bug. (thanks to Matthew Danish)
2226 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2228 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2229 arguments are lexically rebound. (thanks to Gerd Moellmann and
2231 * fixed bug 194: error messages are now more informative when there
2232 is no primary method applicable in a call to a generic
2233 function. (thanks to Gerd Moellmann)
2234 * fixed bug in command line argument checking (thanks to Julian
2236 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2237 (thanks to Matthew Danish)
2238 * incremented fasl file version number, because of the
2239 SXHASH-related changes in the layout of CLOS data structures
2241 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2242 * minor incompatible change: The runtime (the Unix executable named
2243 "sbcl") is now much pickier about the .core files it will load.
2244 Essentially it now requires .core files to descend from the same
2245 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2246 as the runtime does. (The intent is to prevent the crashes which
2247 can occur, and which can even be reported as mysterious failures,
2248 when people patch the sources or change the build parameters
2249 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2250 sbcl and .core files.)
2251 * fixed bug: VALUES-LIST is no longer optimized away.
2252 * fixed bug 142: The FFI conversion of C string values to Lisp
2253 string values no longer conses excessively. (thanks to Nathan
2254 Froyd porting Raymond Toy's fix to CMU CL)
2255 * began to systematize and improve MOP conformance in PCL (thanks to
2256 Nathan Froyd, Gerd Moellman and Pierre Mai):
2257 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2259 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2260 ** FINALIZE-INHERITANCE is now called on class finalization;
2261 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2262 argument precedence order.
2263 * fixed bug 202: The compiler no longer fails on functions whose
2264 derived types contradict their declared type.
2265 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2266 so it can be non-toplevel.
2267 * The fasl file version number has changed (because of the new
2268 implementation of DEFMACRO).
2269 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2270 safe code, that any length requirement by their type-specifier
2271 argument is valid. The exceptions to this are described in bug
2273 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2274 functions now check the types of their inputs as required by ANSI.
2275 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2276 introduced symbol is DECLAREd to be SPECIAL.
2277 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2278 * fixed bug: :COUNT argument to sequence functions may be negative
2279 * fixed bug: body of DO-SYMBOLS may contain declarations
2280 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2281 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2282 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2283 symbol macro only once
2284 * fixed printing of call frame when argument list is unavailable
2285 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2286 * compiler no longer signals WARNING on unknown keyword
2289 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2290 * A beta-quality port to the mips architecture running Linux,
2291 based on the old CMUCL backend, has been made. It has been tested
2292 on a big-endian kernel, and works sufficiently well to be able to
2293 rebuild itself; it has not been tested in little-endian mode.
2294 * fixed an inconsistency between gencgc.c and purify.c which made
2295 dumping/loading .core files unreliable
2296 * fixed bug 120a: The compiler now deals correctly with IFs where
2297 the consequent is the same as the alternative, instead of
2298 misderiving the return type. (thanks to Alexey Dejneka)
2299 * fixed bug 113: Logical pathnames are now dumpable (the logical
2300 host is resolved at load-time, throwing an error if it is not
2302 * fixed bug 174: FORMAT's error message is slightly clearer when a
2303 non-printing character is used in a format directive.
2304 * fixed several bugs in compiler checking of type declarations, i.e.
2305 violations of the Python "declarations are assertions" principle
2306 (thanks to Alexey Dejneka)
2307 * fixed several bugs in PCL's error checking (thanks to Gerd
2309 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2311 * fixed bug in compilation of functions as first class values
2312 (thanks to Antonio Martinez-Shotton)
2313 * The compiler's handling TYPE-ERRORs which it can prove will
2314 inevitably happen at runtime has been cleaned up and corrected
2315 in several ways. (thanks to Alexey Dejneka)
2316 * improved argument type checking for various basic arithmetic
2317 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2318 lavished on them in the past that they can be compiled in many
2319 ways in different special cases
2320 * fixed bug 181: compiler checks validity of user supplied type
2322 * cleaned up code flushing in optimization: Function calls which
2323 should signal errors for safety purposes (e.g. which ANSI says
2324 should signal errors when their arguments are of incorrect type)
2325 are no longer optimized away.
2326 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2327 * incremented fasl file version number, because changes in the
2328 implementation of sequence functions like COERCE caused
2329 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2330 in old inline expansions) to become undefined. (Actually these
2331 changes were later undone, so we might very well be binary
2332 compatible with 0.7.7 after all, but leaving the version number
2333 incremented seemed like the simplest and most conservative
2336 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2337 * An alpha-quality port to the parisc architecture running Linux,
2338 based on the old CMUCL backend, has been made. This, even more so
2339 than the other backends, should be considered still a work in
2340 progress; known problems include that the Linux kernel in 64-bit
2341 mode does not propagate the correct sigcontext structure to
2342 userspace, and consequently SBCL on a parisc64 kernel will not
2344 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2345 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2346 suppressed.) Also now that the compiler is looking at declarations
2347 in the environment, it checks optimization declarations as well,
2348 and suppresses inlining when (> DEBUG SPEED).
2349 * More fixes have been made to treatment of floating point exception
2350 treatment and other Unix signals. In particular, floating point
2351 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2352 * The detection and handling of control stack exhaustion (infinite
2353 or very deeply nested recursion) has changed. Stack exhaustion
2354 detection is now done by write-protecting pages at the OS level
2355 and applies at all optimization settings; when found, a
2356 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2357 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2358 be caught using IGNORE-ERRORS.
2359 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2360 correctly when transforming recursive LABELS functions to LETs.
2361 (thanks to Alexey Dejneka)
2362 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2363 that are names of constants or global variables.
2364 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2365 alien routines with docstrings.
2366 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2367 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2369 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2370 (thanks to Eric Marsden)
2371 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2372 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2373 * Bug fix: The SPARC backend can now compile functions involving
2374 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2375 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2376 to a functions expecting a PATHNAME-DESIGNATOR.
2377 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2378 lambda lists. (thanks to Alexey Dejneka)
2379 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2380 functions so that EXPORTing the name of the class doesn't cause
2381 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2382 to Antonio Martinez for reporting this)
2383 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2384 constant-folded without failing an assertion. (thanks to Einar
2385 Floystad Dorum for reporting this)
2386 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2387 types are now dealt with more correctly by the compiler.
2388 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2389 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2390 behaviour analogous to RENAME-FILE. This puts its behaviour more
2391 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2393 * The fasl file version number has changed again. (because of the
2394 bug fix involving the names of PCL MAKE-INSTANCE functions)
2396 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2397 * bug fix: Floating point exceptions are treated much more
2398 consistently on the x86/Linux and PPC/Linux platforms.
2399 * Array initialization with :INITIAL-ELEMENT is now much faster for
2400 cases when the compiler cannot open code the array creation, but
2401 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2402 array accesses have also seen a speed increase.
2403 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2404 specified. (This was at the root of some bad interactions between
2405 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2407 * bug fix: Internal error arguments for undefined functions are now
2408 computed correctly on the PPC/Linux platform.
2409 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2410 Raymond Toy's patch for CMU CL)
2411 * Support for the Solaris 9 operating environment has been included
2412 (thanks to Daniel Merritt)
2413 * A very ugly but hopefully complete draft of the missing FFI chapter
2414 of the manual has been created by reformatting the corresponding
2415 CMU CL manual chapter into (currently very ugly and incoherent)
2416 DocBook and bringing it up to date for SBCL behavior. Thus, the
2417 manual is now essentially complete, at least by my extreme
2418 once-and-only-once standards, whereby it's acceptable to refer to
2419 the doc strings of SB-EXT functions as the primary documentation.
2420 * The fasl file version number has changed again, due to cleanup of
2421 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2422 is no longer a static symbol.)
2424 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2425 * SBCL now builds with OpenMCL (version 0.12) as the
2426 cross-compilation host; also, more progress has been made toward
2427 bootstrapping under CLISP.
2428 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2430 * bug 158 fixed: The compiler can now deal with integer loop
2431 increments different from 1; fixing this turned out also to fix
2433 * bug 169 fixed: no more bogus warnings about using lexical bindings
2434 despite the presence of perfectly good SPECIAL declarations (thanks
2435 to David Lichteblau)
2436 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2437 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2438 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2440 * bug 180 fixed: Method combination specifications no longer ignore
2441 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2442 * bug fix: Structure type predicate functions now check their argument
2443 count as they should.
2444 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2445 correctly. (thanks to Pierre Mai)
2446 * minor incompatible change: The --noprogrammer option is deprecated
2447 in favor of the new --disable-debugger option, which is very similar.
2448 (The major difference is that it takes effect at a slightly different
2449 time at startup, causing handling of errors in --sysinit and
2450 --userinit files will be affected differently.) The
2451 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2452 been added to allow this functionality to be controlled from ordinary
2453 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2454 maintainers, who might want to run non-interactive scripts to
2455 build SBCL cores which will later be used interactively.)
2456 * minor incompatible change: The LOAD function no longer, when given
2457 a wild pathname to load, loads all files matching that pathname.
2458 Instead, an error of type FILE-ERROR is signalled.
2460 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2461 * bug 147 fixed: The compiler preserves its block link/count
2462 invariants more correctly now so that it doesn't crash. (thanks
2464 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2466 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2467 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2468 no-value-for-this-character as NIL (as specified by ANSI).
2469 * HOST-NAMESTRING on physical pathnames now returns a string that is
2470 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2471 (thanks to Christophe Rhodes)
2472 * The Alpha port handles icache flushing more correctly. (thanks to
2474 * More progress has been made toward bootstrapping under CLISP. (thanks
2475 to Christophe Rhodes)
2476 * The fasl file format has changed again, because dynamic loading
2477 on OpenBSD (which has non-ELF object files) motivated some cleanups
2478 in the way that foreign symbols are transformed and passed around.
2479 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2480 is no longer treated as whitespace by the reader, but instead as
2481 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2482 |A
\7fB|, instead of A as it used to.
2484 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2485 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2486 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2487 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2488 this as of 0.7.1.45, but was left out of the previous news section
2489 (thanks to Dan Barlow)
2490 * SBCL now runs on the Solaris operating system on SPARC architectures
2491 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2492 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2493 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2494 * SPARC backend cleanups, allowing builds of cores optimized for V8
2495 and V9 SPARCS, and also emission of code targeted to a particular
2496 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2498 * SBCL is closer to bootstrapping under CLISP, thanks to various
2499 fixes by Christophe Rhodes.
2500 * The fasl file format has changed again, to allow the compiler's
2501 INFO database to support symbol macros.
2502 * The user manual (in doc/) is formatted into HTML more nicely.
2503 (thanks to coreythomas)
2504 * The system is smarter about SUBTYPEP relationships, especially
2505 those involving NOT types (including types such as ATOM which are
2506 represented internally using NOT types). Thus SUBTYPEP is less
2507 likely to return (VALUES NIL NIL) in general, and in particular
2508 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2510 * The fasl file format has changed again, because the internal
2511 representation of types now includes a new slot to support the new
2512 SUBTYPEP-of-NOT-types logic.
2513 * (not a change in the main branch of SBCL, but a related prototype
2514 which can hopefully be merged into the main branch of SBCL in the
2515 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2516 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2517 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2518 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2519 dispatch macro character combinations. (thanks to Alexey Dejneka)
2520 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2521 that superficially look like logical namestrings correctly.
2522 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2524 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2525 default supplied-p) for &optional and &key arguments. (thanks to
2528 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2529 * incompatible change: The compiler is now less aggressive about
2530 tail call optimization, doing it only when (> SPACE DEBUG) or
2531 (> SPEED DEBUG). (This is an incompatible change because there are
2532 programs which relied on the old CMU-CL-style behavior to optimize
2533 away their unbounded recursion which will now die of stack overflow.)
2534 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2535 for non-GENCGC systems has been increased to 20M (since that
2536 seems much closer to the likely performance optimum for modern
2537 systems than the old 4M value was)
2538 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2539 and *DEBUG-PRINT-LEVEL*
2540 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2541 of CMU CL's support for SPARC, and various endianness and other
2542 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2543 * new syntactic sugar for the Unix command line: --load foo.bar is now
2544 an alternate notation for --eval '(load "foo.bar")'.
2546 ** The system now detects stack overflow and handles it gracefully,
2547 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2548 optimization settings. (This is a good thing in general, and
2549 its introduction in this version should be particularly timely
2550 for anyone whose code fails because of suppression of tail
2552 ** The system now hunts for the C variable "environ" in a more
2553 devious way, to avoid segfaults when the C library version differs
2554 between compile time and run time. (thanks to Christophe Rhodes)
2555 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2556 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2557 ** The compiler no longer issues bogus style warnings for undefined
2558 classes in the same source file as the DEFCLASSes which defined
2559 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2561 ** fixes in CONDITION class precedence list for undefined function
2562 errors (thanks to Alexei Dejneka)
2563 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2564 correctly. (thanks to Dan Barlow)
2565 ** portability fixes aiming at bootstrapping under CLISP (thanks
2566 to Dave McDonald and Christophe Rhodes)
2567 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2568 ** fixes in type translation and and type inference (thanks to
2570 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2571 ** various fixes in the new ports (thanks to Dan Barlow)
2572 * several changes related to debugging:
2573 ** suppression of tail recursion, as noted above
2574 ** stack overflow detection, as noted above
2575 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2576 is now the default. (For some time encapsulation has been more
2577 reliable than the breakpoint-based :ENCAPSULATE NIL
2578 implementation, at least on X86 systems; and I just noticed that
2579 encapsulation also seems closer to the spirit of the ANSI
2582 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2584 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2585 up properly again. (There was a packaging bug in 0.7.0 which
2586 left their definitions in SB-SYS::LOAD-FOREIGN and
2587 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2588 vital for most things which interface to C-level interfaces,
2589 like extensions working with sockets or databases or
2590 Perl-compatible regexes or whatever, and the need to fix
2591 this bug is the main reason that 0.7.1 was released so
2593 ** DEFGENERIC is now choosier about the methods it redefines, so that
2594 reLOADing a previously-LOADed file containing DEFGENERICs does
2595 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2596 cycle now works as it should. (thanks to Alexey Dejneka)
2597 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2598 fixed by Christophe Rhodes. (He actually submitted this patch
2599 months ago, and I delayed until after 0.7.0.)
2600 ** Bug 111 (internal compiler confusion about runtime checks on
2601 FUNCTION types) was fixed by Alexey Dejneka.
2602 * Some internal cleanups (getting rid of variables which aren't
2603 needed now that the byte interpreter is gone) caused the fasl
2604 file format number to change again.
2606 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2607 * major incompatible change: The default fasl file extension, i.e. the
2608 default extension for files produced by COMPILE-FILE, has changed
2609 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2611 ** There are many changes in the implementation of the compiler.
2612 SBCL is now essentially a compiler-only implementation of ANSI
2613 Common Lisp. EVAL still "interprets" a few special cases, but
2614 almost all the interesting cases are handled by creating
2615 a LAMBDA expression, calling COMPILE on it, then calling
2616 FUNCALL on the result.
2617 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2618 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2619 Since the code is newer, there might still be some new bugs
2620 (though not as many as before Martin Atzmueller's fixes:-). But
2621 the new code is substantially simpler and clearer, and hopefully
2622 any remaining bugs will be simpler, less fundamental, and more
2623 fixable then the bugs in the old code.
2624 ** The revised compiler is still a little unsteady on its feet.
2626 *** The debugging information it produces (particularly the names
2627 of FUNCTION objects) is sometimes much less useful than what
2628 the old compiler produced.
2629 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2630 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2631 within a MACROLET) has been temporarily weakened.
2632 ** There are new compiler optimizations for various functions:
2633 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2634 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2635 *** the math functions TRUNCATE, FLOOR, and CEILING
2636 *** the function-of-all-trades COERCE
2637 Mostly these should be transparent, but there's one
2638 potentially-annoying problem (bug 117): when the compiler
2639 inline-expands a function and does type analysis on the result,
2640 it can create control paths which have type mismatches, and
2641 when it can't prove that those control paths aren't taken,
2642 it will issue WARNINGs about the type mismatches. This is
2643 a particular problem in practice for the new sequence functions.
2644 It's not clear how this should be fixed, and for now, a
2645 workaround is given in the entry for 117 in the BUGS file.
2646 ** (Because of the interaction between the two previous items --
2647 occasional inlining problems and new inline expansions -- some
2648 of the new sequence function optimizations won't really kick in
2649 completely until debugging information, and then inlining, are
2650 straightened out in some future version.)
2651 * minor incompatible changes:
2652 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2653 DIRECTORY no longer implicitly promotes NIL slots of its
2654 pathname argument to :WILD. In particular, when you ask for the
2655 contents of a directory (which you used to be able to do without
2656 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2657 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2658 ** changes in behavior that ANSI explicitly defines to be
2659 implementation dependent:
2660 *** The new compiler-only implementation still conforms with ANSI,
2661 but acts a little different than before. Besides the obvious
2662 changes in performance tradeoffs (that the cost per form passed
2663 to EVAL has gone up, and the cost per form executed by EVAL
2664 has gone down), the behavior of the system changes a little
2665 because there are no longer any interpreted function objects.
2666 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2667 e.g. doing COMPILE on the output of interactive DEFUN is
2669 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2671 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2672 has changed from (:CL) to NIL.
2673 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2674 e.g. #\Newline and #\Tab, don't have names specified in the
2675 ANSI Common Lisp standard, is now based on their ASCII symbolic
2676 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2677 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2678 are no longer used for output.
2679 ** changes in internal implementation constants:
2680 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2681 4 million. (If your application spends a lot of time GCing and
2682 you have a lot of RAM, you might want to experiment with
2683 increasing it even more.)
2684 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2685 However, almost all old code should still continue to work without
2686 immediate update, as SB-C-CALL is now a (deprecated) nickname
2688 ** Old operator names in the style DEF-FOO are now deprecated in
2689 favor of new corresponding names DEFINE-FOO, for consistency with
2690 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2691 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2692 internal symbols, but a few supported extensions like
2693 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2694 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2695 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2696 etc. as you get deeper into recursive calls to the debugger
2697 command loop, instead of the old "5]", "5]]", "5]]]"
2698 sequence. (I was motivated to do this when squabbles between
2699 ILISP and SBCL left me very deeply nested in the debugger. In the
2700 short term, this change will probably provoke more ILISP/SBCL
2701 squabbles, but hopefully it will be an improvement in the long run.)
2702 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2703 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2704 function, since declaiming return types involving aliens is
2705 (1) annoyingly messy to do by hand and (2) vital to efficient
2706 compilation of code which calls such functions.
2707 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2708 longer reexported by the SB-EXT package. They're solely useful
2709 for alien code, so it seems more logical that you should get
2710 them from the SB-ALIEN package, not in SB-EXT.
2711 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2712 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2713 features. Instead, the code that they used to control is always
2714 built into the system.
2715 * many other bug fixes
2716 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2717 advantage of the new EVAL-WHEN stuff and to clean them up in
2718 general, and they are now more ANSI-compliant in a number of
2719 ways. Martin Atzmueller is responsible for a lot of this.
2720 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2722 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2723 *** correct ERROR type for various file operations
2724 *** some fixes for Lisp streams
2725 *** DEFMETHOD syntax checking
2726 *** changing old weird representation of debug information as
2727 strings (which, among their other deficiencies, don't transform
2728 correctly when you rename packages, and don't change their
2729 print representation when you change things like *PACKAGE*
2730 and *PRINT-LENGTH*) to symbols and lists of symbols
2731 He also made several improvements and fixed several bugs in DESCRIBE.
2732 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2734 *** misbehavior of WRITE-STRING/WRITE-LINE
2735 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2736 and several other LOOP problems as well
2737 *** DIRECTORY when similar filenames are present
2738 *** DEFGENERIC with :METHOD options
2739 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2740 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2741 *** argument ordering in FIND with :TEST option
2742 *** mishandled package designator argument in APROPOS-LIST
2743 *** various problems in the backquote readmacro
2744 *** a bug in APROPOS
2745 *** probably some others that I'm not describing very well here,
2746 since the CVS log documents them by reference to sbcl-devel
2747 messages, and the SourceForge archives aren't working well.:-(
2748 ** Dan Barlow improved the Alpha port (and is making progress on the
2749 PPC port, for those of you who think different).
2750 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2751 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2752 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2753 continues to work on the SPARC port (for those of you in a position
2754 to look down upon our little PC-compatible boxes from a great height).
2755 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2756 and uses that copy, rather than the current dynamic value, when
2757 it's trying to decide whether to truncate output. Thus e.g.
2758 (let ((*print-lines* 50))
2759 (pprint-logical-block (stream nil)
2761 (let ((*print-lines* 8))
2762 (print (aref possiblybigthings i) stream)))))
2763 should now truncate the logical block only at 50 lines, instead of
2764 often truncating it at 8 lines, as it did before.
2765 * The doc/cmucl/ directory, containing old CMU CL documentation
2766 from the time of the fork, is no longer part of the base system.
2767 SourceForge has shut down its anonymous FTP service, and with it
2768 my original plan for distributing the old CMU CL documentation
2769 there. For now, if you need these files you can download an old
2770 SBCL source release and extract them from it.
2771 * The fasl file version number changed again, for dozens of reasons,
2772 some of which are apparent above.
2774 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2775 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2776 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2777 patch, so that DISASSEMBLE output is much nicer.
2778 * The code in the SB-PROFILE package now seems reasonably stable.
2779 I still haven't decided what the final interface should look like
2780 (I'd like PROFILE to interact cleanly with TRACE, since both
2781 facilities use function encapsulation) but if you have a need
2782 for profiling now, you can probably use it successfully with
2783 the current CMU-CL-style interface.
2784 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2785 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2786 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2787 link now returns the dangling link itself, and for similar
2788 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2789 link itself. (In these cases the old code signalled an error and
2790 looped endlessly, respectively.) Thus, DIRECTORY now works even
2791 in the presence of dangling and cyclic symbolic links.
2792 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2793 is now a supported extension again, since the consensus on
2794 sbcl-devel was that it can be useful for ordinary development
2795 work, not just for debugging SBCL itself.
2796 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2797 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2798 that currently-defined functions might be redefined later with
2799 different return types.
2800 * Hash tables can be printed readably, as inspired by CMU CL code
2801 of Eric Marsden and SBCL code of Martin Atzmueller.
2802 * better error handling in CLOS method combination, thanks to
2803 Martin Atzmueller porting Pierre Mai's CMU CL patches
2804 * more overflow fixes for >16Mbyte I/O buffers
2805 * A bug in READ has been fixed, so that now a single Ctrl-D
2806 character suffices to cause end-of-file on character streams.
2807 In particular, now you only need one Ctrl-D at the command
2808 line (not two) to exit SBCL.
2809 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2811 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2812 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2813 does the right thing.
2814 * The implementation of some type tests, especially for CONDITION
2815 types, is now tidier and maybe faster, due to CMU CL code
2816 originally by Douglas Crosher, ported by Martin Atzmueller.
2817 * Some math functions have been fixed, and there are new
2818 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2819 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2820 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2821 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2822 likely to be built into sbcl-0.7.0.)
2823 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2824 CL, ported to SBCL by Martin Atzmueller)
2825 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2826 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2827 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2828 * There's a new slam.sh hack to shorten the edit/compile/debug
2829 cycle for low-level changes to SBCL itself, and a new
2830 :SB-AFTER-XC-CORE target feature to control the generation of
2831 the after-xc.core file needed by slam.sh.
2832 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2833 COMPILE-FILE is no longer supported, so that now every function
2834 gets an entry point, so that block compilation looks a little
2835 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2836 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2837 returns the number of bytes consed since the system started,
2838 rather than the number consed since the first time the function
2839 was called. (The new definition parallels ANSI functions like
2840 CL:GET-INTERNAL-RUN-TIME.)
2841 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2842 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2843 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2844 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2845 * Fasl file version numbers are now independent of the target CPU,
2846 since historically most system changes which required version
2847 number changes have affected all CPUs equally. Similarly,
2848 the byte fasl file version is now equal to the ordinary
2851 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2852 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2853 is no longer recognized. I apologize for this, because it was
2854 listed in SB-EXT as a supported extension, but I found that
2855 its existing behavior was poorly specified, as well as incorrectly
2856 specified, and it looked like too much of a mess to straighten it
2857 out. I have enough on my hands trying to get ANSI stuff to work..
2858 * many patches ported from CMU CL by Martin Atzmueller, with
2859 half a dozen bug fixes in pretty-printing and the debugger, and
2860 half a dozen others elsewhere
2861 * fixed bug 13: Floating point infinities are now supported again.
2862 They might still be a little bit flaky, but thanks to bug reports
2863 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2864 as flaky as they were.
2865 * The --noprogrammer command line option is now supported. (Its
2866 behavior is slightly different in detail from what the old man
2867 page claimed it would do, but it's still appropriate under the
2868 same circumstances that the man page talks about.)
2869 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2870 are now supported, and enabled by default. Thus, the compiler can
2871 handle many floating point and complex operations much less
2872 inefficiently. (Thus e.g. you can implement a complex FFT
2874 * The compiler now detects type mismatches between DECLAIM FTYPE
2875 and DEFUN better, and implements CHECK-TYPE more correctly, and
2876 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2877 thanks to patches from Martin Atzmueller.
2878 * various fixes to make the cross-compiler more portable to
2879 ANSI-conforming-but-different cross-compilation hosts (notably
2880 Lispworks for Windows, following bug reports from Arthur Lemmens)
2881 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2882 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2883 fixed thanks to Pierre Mai's CMU CL patches.
2884 * fixes to keep the system from overflowing internal counters when
2885 it tries to use i/o buffers larger than 16M bytes
2886 * fixed bug 45a: Various internal functions required to support
2887 complex special functions have been merged from CMU CL sources.
2888 (When I was first setting up SBCL, I misunderstood a compile-time
2889 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2890 * improved support for type intersection and union, fixing bug 12
2891 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2892 more obscure bugs as well
2893 * some steps toward byte-compiling non-performance-critical
2894 parts of the system, courtesy of patches from Martin Atzmueller
2895 * Christophe Rhodes has made some debian packages of sbcl at
2896 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2897 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2898 stable, but are nonetheless usable. When he's ready, I'd be happy
2899 to add them to the SourceForge "File Releases" section. (And if
2900 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2901 * new fasl file format version number (because of changes in
2902 internal representation of (OR ..) types to accommodate the new
2903 support for (AND ..) types, among other things)
2905 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2906 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2908 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2910 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2911 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2912 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2913 * DESCRIBE now works on structure objects again.
2914 * Most function call argument type mismatches are now handled as
2915 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2916 know whether the function will be redefined before the call is
2917 executed. (The compiler could flag local calls with full WARNINGs,
2918 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2919 it doesn't keep track of enough information to know whether calls
2920 are local in this sense.)
2921 * Compiler output is now more verbose, with messages truncated
2922 later than before. (There should be some supported way for users
2923 to override the default verbosity, but I haven't decided how to
2924 provide it yet, so this behavior is still controlled by the internal
2925 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2926 src/compiler/ir1util.lisp.)
2927 * Fasl file format version numbers have increased again, because
2928 support for the Gray streams extension changes the layout of the
2929 system's STREAM objects.
2930 * The Gray subclassable streams extension now works, thanks to a
2931 patch from Martin Atzmueller.
2932 * The full LOAD-FOREIGN extension (not just the primitive
2933 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2934 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2935 but like most other programs, it defaults to copying the Unix
2936 environment from the original process instead of starting the
2937 new process in an empty environment.
2938 * Extensions which manipulate the Unix environment now support
2939 an :ENVIRONMENT keyword option which doesn't smash case or
2940 do other bad things. The CMU-CL-style :ENV option is retained
2941 for porting convenience.
2942 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2943 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2945 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2947 * A patch from Martin Atzmueller seems to have solved the SIGINT
2948 problem, and as far as we know, signal-handling now works cleanly.
2949 (If you find any new bugs, please report them!)
2950 * The system no longer defaults Lisp source file names to types
2951 ".l", ".cl", or ".lsp", but only to ".lisp".
2952 * The compiler no longer uses special default file extensions for
2953 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2954 seems to expect a single default extension for all compiled code,
2955 and there's no compelling reason to try to stretch the standard
2956 to allow two different extensions.) Instead, byte-compiled files
2957 default to the same extension as native-compiled files.
2958 * Fasl file format version numbers have increased again, because
2959 a rearrangement of internal implementation packages made some
2960 dumped symbols in old fasl files unreadable in new cores.
2961 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2962 many fewer weird special cases.
2963 * Bug #17 (differing COMPILE-FILE behavior between logical and
2964 physical pathnames) has been fixed, and some related misbehavior too,
2965 thanks to a patch from Martin Atzmueller.
2966 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2967 by Tim Moore, ported to SBCL by Martin Atzmueller.
2968 * Martin Atzmueller fixed several filesystem-related problems,
2969 including bug #36, in part by porting CMU CL patches, which were
2970 written in part by Paul Werkowski.
2971 * More compiler warnings in src/runtime/ are gone, thanks to
2972 more patches from Martin Atzmueller.
2973 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2976 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2978 * DESCRIBE now works on CONDITION objects.
2979 * The debugger now handles errors which arise when trying to print
2980 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2982 * The build system now uses an additional file, customize-target-features.lisp,
2983 to allow local modifications to the target *FEATURES* list. (The point of
2984 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2985 debugging features enabled, without having to worry about propagating it
2986 into everyone's system when I do a "cvs update".) When no
2987 customize-target-features.lisp file exists, the target *FEATURES* list
2988 should be constructed the same way as before.
2989 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2990 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2991 warn about behavior which is undefined under the ANSI spec. Note: This
2992 is specified by ANSI, but it's not very popular with programmers.
2993 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2994 macro in the SBCL sources for an example of a workaround which you
2995 might use to make portable ANSI-standard code which does what you want.
2996 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2997 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2998 when it's used as a non-toplevel form. (This is required in order
2999 to implement the DEFCONSTANT-EQX macro.)
3000 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3001 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3002 funny things, due to bugs in the implementation of EVAL-WHEN
3003 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3004 non-toplevel DEFCONSTANTs are uncommon.)
3005 * The core file version number and fasl file version number have been
3006 incremented, because the old noncompliant DEFCONSTANT behavior involved
3007 calling functions which no longer exist, and because I also took the
3008 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3009 * fixed bug 1 (error handling before read-eval-print loop starts), and
3010 redid debugger restarts and related debugger commands somewhat while
3012 ** The QUIT debugger command is gone, since it did something
3013 rather different than the SB-EXT:QUIT command, and since it never
3014 worked properly outside the main toplevel read/eval/print loop.
3015 Invoking the new TOPLEVEL restart provides the same functionality.
3016 ** The GO debugger command is also gone, since you can just invoke
3017 the CONTINUE restart directly instead.
3018 ** The TOP debugger command is also gone, since it's redundant with the
3019 FRAME 0 command, and since it interfered with abbreviations for the
3021 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3023 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3024 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3025 some porting work by Martin Atzmueller)
3026 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3027 with a boatload of patches which he ported to SBCL. Now that those
3029 ** The system tries to make sure that its low-priority messages
3030 are prefixed by semicolons, to help people who like to use
3031 syntax highlighting in their ILISP buffer. (This patch
3032 was originally due to Raymond Toy.)
3033 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3034 patches originally written by Raymond Toy.
3035 ** The compiler understands coercion between single-value and
3036 multiple-VALUES type expressions better, getting rid of some very
3037 weird behavior, thanks to patches originally by Robert MacLachlan
3038 and Douglas Crosher.
3039 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3040 lambda lists, thanks to a patch originally by Pierre Mai.
3041 ** The system no longer bogusly warns about "abbreviated type
3043 ** The compiler gets less confused by inlining and RETURN-FROM,
3044 thanks to some patches originally by Tim Moore.
3045 ** The system no longer hangs when dumping circular lists to fasl
3046 files, thanks to a patch originally from Douglas Crosher.
3047 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3048 undefined function error.
3049 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3050 in structure slot initforms) for now, documented workaround instead:-|
3051 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3052 * fixed bug 5: added stubs for various Gray stream functions called
3053 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3054 installed, at least appropriate type errors are generated
3055 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3056 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3057 consistently in DEFMETHOD forms.
3058 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3059 it doesn't seem to affect SBCL after all
3060 * The C runtime system now builds with better optimization and many
3061 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3063 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3065 * The system is now under CVS at SourceForge (instead of the
3066 CVS repository on my home machine).
3067 * The new signal handling code has been tweaked to treat register
3068 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3069 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3070 downstream, e.g. in debug-int.lisp, has implicit dependencies
3071 on the unsignedness of integer representation of machine words,
3072 and that caused the system to bomb out with infinite regress
3073 when trying to recover from type errors involving signed values,
3074 e.g. (BUTLAST '(1 2 3) -1).)
3075 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3076 (This was one of the bugs Peter Van Eynde reported back in July.)
3077 * The system now uses code inspired by Colin Walters' O(N)
3078 implementation of MAP (from the cmucl-imp@cons.org mailing
3079 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3080 inline the MAP operation, and there is more than one
3081 sequence argument to the MAP call (so that it can't just
3082 do ETYPECASE once and for all based on the type of the
3083 single sequence argument). (The old non-inline implementation
3084 of the general M-argument sequence-of-length-N case required
3085 O(M*N*N) time when any of the sequence arguments were LISTs.)
3086 * The QUIT :UNIX-CODE keyword argument has been renamed to
3087 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3088 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3090 * Raymond Wiker's patches to port dynamic loading from Linux to
3091 FreeBSD have been added.
3092 * The BUGS file is now more nearly up to date, thanks in large part
3093 to Martin Atzmueller's review of it.
3094 * The debugger now flushes standard output streams before it begins
3095 its output ("debugger invoked" and so forth).
3096 * The core version number and fasl file version number have both
3097 been incremented, because of incompatible changes in the layout
3099 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3100 used to not be called for a saved Lisp image.)
3101 * Martin Atzmueller's version of a patch to fix a compiler crash,
3102 as posted on sbcl-devel 13 September 2000, has been installed.
3103 * Instead of installing Martin Atzmueller's patch for the
3104 compiler transform for SUBSEQ, I deleted the compiler transform,
3105 and transforms for some similar consing operations.
3106 * A bug in signal handling which kept TRACE from working on OpenBSD
3108 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3109 away by constant folding
3110 * The system now defines its address space constants in one place
3111 (in the Lisp sources), and propagates them automatically elsewhere
3112 (through GENESIS and the sbcl.h file). Therefore, patching the
3113 address map is less unnecessarily tedious and error-prone. The
3114 Lisp names of address space constants have also been systematized.
3115 * CVS tags like dollar-Header-dollar have been removed from
3116 the sources, because they have never saved me trouble and
3117 they've been source of trouble working with patches and other
3118 diff-related operations.
3119 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3120 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3122 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3124 * The system has been ported to OpenBSD.
3125 * The system now compiles with a simple "sh make.sh" on the systems
3126 that it's supported on. I.e., now you no longer need to tweak
3127 text in the target-features.lisp-expr and symlinks in src/runtime/
3128 by hand, the make.sh takes care of it for you.
3129 * The system is no longer so grossly inefficient when compiling code
3130 involving vectors implemented as general (not simple) vectors (VECTOR T),
3131 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3132 which dares to use the various sequence functions on non-simple
3133 vectors, takes less of a performance hit.
3134 * There is now a primitive type predicate VECTOR-T-P
3135 to test for the (VECTOR T) type, so that e.g.
3136 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3137 can now be compiled with some semblance of efficiency. (The old code
3138 turned the type declaration into a full call to %TYPEP at runtime!)
3139 * AREF on (VECTOR T) is still not fast, since it's still compiled
3140 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3141 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3142 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3143 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3144 without making full calls to SUBTYPEP at runtime.
3145 (Some analogous efficiency issues for non-simple vectors specialized to
3146 element types other than T, or for non-simple multidimensional arrays,
3147 have not been addressed. They could almost certainly be handled the
3148 same way if anyone is motivated to do so.)
3149 * The changes in array handling break binary compatibility, so
3150 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3151 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3152 instead of (VALUES T T).
3153 * By following the instructions that Dan Barlow posted to sbcl-devel
3154 on 2 July 2000, I was able to enable primitive dynamic object
3155 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3156 functionality is not implemented (since it calls ld to resolve
3157 library references automatically, requiring RUN-PROGRAM for its
3158 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3159 try to resolve library references) is now supported.
3160 * The system now flushes the standard output streams when it terminates,
3161 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3162 them at several other probably-convenient times, e.g. in each pass of
3163 the toplevel read-eval-print loop, and after evaluating a form given
3164 as an "--eval" command-line option. (These changes were motivated by a
3165 discussion of stream flushing issues on cmucl-imp in August 2000.)
3166 * The source transform for TYPEP of array types no longer assumes
3167 that an array whose element type is a not-yet-defined type
3168 is implemented as an array of T, but instead punts, so that the
3169 type will be interpreted at runtime.
3170 * There is now some support for cross-compiling in make.sh: each of
3171 the phases of make.sh has its own script. (This should be transparent
3172 to people doing ordinary, non-cross-compile builds.)
3173 * Since my laptop doesn't have hundreds of megabytes of memory like
3174 my desktop machine, I became more motivated to do some items on
3175 my to-do list in order to reduce the size of the system a little:
3176 ** Arrange for various needed-only-at-cold-init things to be
3177 uninterned after cold init. To support this, those things have
3178 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3179 symbols with such names are now uninterned after cold init).
3180 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3181 fasl files for cold load.
3182 ** Remove the old compiler structure pooling code (which used to
3183 be conditional on the target feature :SB-ALLOC) completely.
3184 ** Redo the representation of some data in cold init to be more compact.
3185 (I also looked into supporting byte compiled code at bootstrap time,
3186 which would probably reduce the size of the system a lot, but that
3187 looked too complicated, so I punted for now.)
3188 * The maximum signal nesting depth in the src/runtime/ support code has
3189 been reduced from 4096 to 256. (I don't know any reason for the very
3190 large old value. If the new smaller value turns out to break something,
3191 I'll probably just bump it back up.)
3192 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3194 * Many, many bugs reported by Peter Van Eynde have been added to
3195 the BUGS list; some have even been fixed.
3196 * While enabling dynamic object file loading, I tried to make the
3197 code easier to understand, renaming various functions and variables
3198 with less ambiguous names, and changing some function calling
3199 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3200 * While trying to figure out how to do the OpenBSD port, I tried to
3201 clean up some of the code in src/runtime/. In particular, I dropped
3202 support for non-POSIX signal handling, added various comments,
3203 tweaked the code to reduce the number of compilation warnings, and
3204 renamed some files to increase consistency.
3205 * To support the new automatic configuration functionality in make.sh,
3206 the source file target-features.lisp-expr has been replaced with the
3207 source file base-target-features.lisp-expr and the machine-generated
3208 file local-target-features.lisp-expr.
3209 * fixed a stupid quoting error in make.sh so that using CMU CL
3210 "lisp -batch" as cross-compilation host works again
3212 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3214 * DESCRIBE no longer tries to call itself recursively to describe
3215 bound/fbound values, so that it no longer fails on symbols which are
3216 bound to themselves (like keywords, T, and NIL).
3217 * DESCRIBE now works on generic functions.
3218 * The printer now prints less-screwed-up representations of closures
3219 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3220 * A private symbol is used instead of the :EMPTY keyword previously
3221 used to mark empty slots in hash tables. Thus
3222 (DEFVAR *HT* (MAKE-HASH-TABLE))
3223 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3224 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3225 now does what ANSI says that it should. (You can still get
3226 similar noncompliant behavior if bang on the hash table
3227 implementation with all the symbols you get back from
3228 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3229 This breaks binary compatibility, since tests for equality to
3230 :EMPTY are wired into things like the macroexpansion of
3231 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3233 * There's now a minimal placeholder implementation for CL:STEP,
3234 as required by ANSI.
3235 * An obscure bug in the interaction of the normal compiler, the byte
3236 compiler, inlining, and structure predicates has been patched
3237 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3238 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3240 * Missing ordinary arguments in a macro call are now detected even
3241 when the macro lambda list contains &KEY or &REST.
3242 * The debugger no longer complains about encountering the top of the
3243 stack when you type "FRAME 0" to explicitly instruct it to go to
3244 the top of the stack. And it now prints the frame you request even
3245 if it's the current frame (instead of saying "You are here.").
3246 * As specified by ANSI, the system now always prints keywords
3247 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3249 * The default initial SIZE of HASH-TABLEs is now smaller.
3250 * Type information from CLOS class dispatch is now propagated
3251 into DEFMETHOD bodies, so that e.g.
3252 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3254 is now basically equivalent to
3255 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3256 (DECLARE (TYPE SINGLE-FLOAT X))
3258 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3259 operation, without having to do run-time type dispatch.
3260 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3261 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3262 * Since I don't seem to be making big file reorganizations very often
3263 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3264 is overflowing my ability to conveniently back them up), I've finally
3265 checked the system into CVS. (The CVS repository is on my home system,
3266 not at SourceForge -- putting it on SourceForge might come later.)
3267 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3268 high-level GC-NOTIFY-FOO functions send their output. (There's
3269 still very little control of where low-level verbose GC functions
3270 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3271 less than it used to -- the GC-NOTIFY-FOO functions are now under
3272 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3273 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3274 in only one place in the source code, and propagates it automatically
3275 everywhere that it's needed. Thus e.g. when I bump the version from
3276 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3277 * The C source files now include boilerplate legalese and documentation
3278 at the head of each file (just as the Lisp source files already did).
3279 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3280 to his page will be replaced with a link to his new CLiki service.
3282 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3284 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3285 * The build process now looks for GNU make under the default name "gmake",
3286 instead of "make" as it used to. If GNU make is not available as "gmake"
3287 on your system, you can change this default behavior by setting the
3288 GNUMAKE environment variable.
3289 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3290 can build without error under CMU CL.
3292 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3294 * There is now a partial SBCL user manual (with some new text and some
3295 text cribbed from the CMU CL manual).
3296 * The beginnings of a profiler have been added (starting with the
3297 CMU CL profiler and simplifying and cleaning up). Eventually the
3298 main interface should be through the TRACE macro, but for now,
3299 it's still accessed through vaguely CMU-CL-style functions and macros
3300 exported from the package SB-PROFILE.
3301 * Some problems left over from porting CMU CL to the new
3302 cross-compilation bootstrap process have been cleaned up:
3303 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3304 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3305 part when getting rid of the compiler *BACKEND* stuff.)
3306 ** The value of *NULL-TYPE* was screwed up, because it was
3307 being initialized before the type system knew the final
3308 definition of the 'NULL type. This screwed up several key
3309 optimizations in the compiler, causing inefficiency in all sorts
3310 of places. (I found it because I wanted to understand why
3311 GET-INTERNAL-RUN-TIME was consing.)
3312 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3313 PROCLAIM FTYPE information. Unfortunately this broke binary
3314 compatibility again, since now the forms output by DEFGENERIC
3315 to refer to functions which didn't exist in 0.6.3.
3316 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3317 can use the new (as of 0.6.3) transform for SOME into MAP into
3319 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3320 values to (INTEGER 0 1000000), so that the time code will no longer
3321 occasionally get blown up by Linux returning 1000000 microseconds
3322 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3323 its output conform to the ANSI spec. (Alas, this makes its output
3324 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3325 * A full call to MAP NIL with a single sequence argument no longer conses.
3326 * fixes to problems pointed out by Martin Atzmueller:
3327 * The manual page no longer talks about multiprocessing as though
3328 it were currently supported.
3329 * The ILISP support patches have been removed from the distribution,
3330 because as of version 5.10.1, ILISP now supports SBCL without us
3331 having to maintain patches.
3332 * added a modified version of Raymond Toy's recent CMU CL patch for
3333 EQUALP comparison of HASH-TABLE
3335 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3337 * The system still can't cross-compile itself with
3338 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3339 entails), but at least it can compile more of itself that way
3340 than it used to be able to, and various buglets which were uncovered
3341 by trying to cross-compile itself that way have now been fixed.
3342 * This release breaks binary compatibility again. This time
3343 at least I've incremented the FASL file format version to 2, so that the
3344 problem can be detected reliably instead of just causing weird errors.
3345 * various new style warnings:
3346 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3347 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3348 ** using the lexical binding of a variable named in the *FOO* style
3349 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3350 as specified by ANSI.
3351 * *RANDOM-STATE* is no longer automatically initialized from
3352 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3353 default behavior of the system is to repeat its behavior every time
3354 it's run. If you'd like to change this behavior, you can always
3355 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3356 old convention there was no comparably easy way to get the system to
3357 repeat its behavior every time it was run.
3358 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3359 FTYPE declarations has been removed, in favor of their ANSI
3360 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3361 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3362 the types of their sequence arguments can be determined at compile time.
3363 This is done through a new open code expansion for MAP which eliminates
3364 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3365 argument types can be determined at compile time.
3366 * The optimizer now transforms COERCE into an identity operation when it
3367 can prove that the coerced object is already of the correct type. (This
3368 can be a win for machine generated code, including the output of other
3369 optimization transforms, such as the MAP transform above.)
3370 * Credit information has been moved from source file headers into CREDITS.
3371 * Source file headers have been made more standard.
3372 * The CASE macro now compiles without complaining even when it has
3375 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3377 * (Note that the way that the PCL macroexpansions were rewritten
3378 to accommodate the change in DEFGENERIC below breaks binary
3379 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3380 not run under sbcl-0.6.2. Once we get out of alpha releases,
3381 i.e. hit release 1.0.0, we'll probably try to maintain binary
3382 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3383 and sbcl-1.4.4. Until then, however, it might be fairly common
3384 for maintenance releases to break binary compatibility.)
3385 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3387 * The reporting of unhandled signals has been changed to print some
3388 explanatory text as well as the report form. (Previously only
3389 the report form was printed.)
3390 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3391 it defines, so that the compiler no longer issues undefined function
3392 warnings for compiled-but-not-yet-loaded generic functions.
3393 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3394 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3395 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3396 section of the ANSI spec are supported.
3397 * The "" nickname for the "KEYWORD" package has been removed.
3398 The reader still handles symbol tokens which begin with a package marker
3399 as keywords, but it doesn't expose its mechanism for doing so in the
3400 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3401 * The system now issues STYLE-WARNINGs for contradictory TYPE
3402 proclamations. (Warnings for contradictory FTYPE proclamations would
3403 be nice too, but those can't be done usefully unless the type system
3404 is made smarter about FUNCTION types.)
3405 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3406 systematized, so that "*target-*.lisp is supposed to exist only on the
3407 target and imply that there's a related file which exists on the
3408 host, and *host-*.lisp is supposed to exist only on the host and imply
3409 that there's a related file which exists on the target. This involves a
3410 lot of renaming. Hopefully the acute confusion caused by the renaming
3411 will be justified by the reduction in chronic confusion..
3412 ** runtime-type.lisp -> early-target-type.lisp
3413 ** target-type.lisp -> late-target-type.lisp
3414 ** early-host-format.lisp -> early-format.lisp
3415 ** late-host-format.lisp -> late-format.lisp
3416 ** host-error.lisp -> misc-error.lisp
3417 ** early-error.lisp -> early-target-error.lisp
3418 ** late-error.lisp -> late-target-error.lisp
3419 ** host-defboot.lisp -> early-defboot.lisp
3420 ** code/misc.lisp -> code/target-misc.lisp
3421 ** code/host-misc.lisp -> code/misc.lisp
3422 ** code/numbers.lisp -> code/target-numbers.lisp
3423 ** code/early-numbers.lisp -> numbers.lisp
3424 ** early-host-type.lisp -> early-type.lisp
3425 ** late-host-type.lisp -> late-type.lisp
3426 ** host-typep.lisp -> typep.lisp
3427 ** load.lisp -> target-load.lisp
3428 ** host-load.lisp -> load.lisp
3429 ** host-disassem.lisp -> disassem.lisp
3430 ** host-insts.lisp -> insts.lisp
3431 ** byte-comp.lisp -> target-byte-comp.lisp
3432 ** host-byte-comp.lisp -> byte-comp.lisp
3433 ** host-signal.lisp -> signal.lisp
3434 ** host-defstruct.lisp -> defstruct.lisp
3435 ** late-target-type.lisp -> deftypes-for-target.lisp
3436 Furthermore, several other previously target-only files foo.lisp (e.g.
3437 hash-table.lisp and random.lisp) have been split into a target-and-host
3438 foo.lisp file and a target-only target-foo.lisp file, with their key type
3439 definitions in the target-and-host part, so that the cross-compiler will
3440 know more about target types.
3441 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3442 gone away. In their place are various *BACKEND-FOO* variables
3443 corresponding to the slots of the old structure.
3444 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3445 into the target SBCL has been fixed.
3446 * The chill.lisp system for loading cold code into a running SBCL
3448 * Support for the CMU CL "scavenger hook" extension has been removed.
3449 (It was undocumented and unused in the CMU CL sources that SBCL was
3450 derived from, and stale in sbcl-0.6.1.)
3451 * Various errors in the cross-compiler type system were detected
3452 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3453 (enabling various consistency checks). Many of them were fixed,
3454 but some hard problems remain, so the compiler is back to
3455 running without *TYPE-SYSTEM-INITIALIZED* for now.
3456 * As part of the cross-compiler type system cleanup, I implemented
3457 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3458 * I have started adding UNCROSS calls throughout the type system
3459 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3460 on cross-compiler input files will be able to go away, and various
3462 * CONSTANTP now returns true for quoted forms (as explicitly required
3465 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3467 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3468 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3469 (MAKE-LIST -1). In the longer term, it ought to become true
3470 that declarations are assertions even at SAFETY 1. For now, it's not
3471 quite true even at SAFETY 3, but it's at least more nearly true..
3472 (Note that this change seems to increases the size of the system by
3473 O(5%) and to decrease the speed of the compiler by 20% or more.)
3474 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3475 for the problem of printing dozens of lines of distracting information
3476 about low-level system machinery as part of the top stack frame
3477 on entry to the debugger when an undefined function was called.
3478 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3479 is not reset to COMMON-LISP-USER.
3480 * Compilation of stuff related to dyncount.lisp has been made conditional
3481 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3482 smaller. The various dyncount-related symbols have been moved into
3483 a new "SB-DYNCOUNT" package.
3484 * tty-inspect.lisp has been renamed to inspect.lisp.
3485 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3486 feature has gone away. (When we eventually port to other flavors of
3487 libc and/or Unix, we'll try to make the differences between flavors
3488 invisible at the user level.)
3489 * Various other *FEATURES* tags, and/or their associated conditionals,
3490 have been removed if obsolescent, or given better documentation, or
3491 sometimes given more-mnemonic names.
3493 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3495 * tidied up "make.sh" script
3496 * tidied up system directory structure
3497 * better "clean.sh" behavior
3498 * added doc/FOR-CMUCL-DEVELOPERS
3499 * many many small tweaks to output format, e.g. removing possibly-confusing
3500 trailing #\. character in DESCRIBE-INSTANCE
3501 * (EQUALP #\A 'A) no longer signals an error.
3502 * new hashing code, including EQUALP hashing
3503 * tidied up Lisp initialization and toplevel
3504 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3505 * command line argument processing
3506 * added POSIX-GETENV function to deal with Unix-ish environment variables
3507 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3508 terminating SBCL on EOF
3509 * non-verbose GC by default
3510 * There is no more "sbcl" shell script; the sbcl file is now the C
3511 runtime executable (just like CMU CL).
3512 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3514 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3515 symbol and package information as Lisp native symbol and package objects
3516 instead of strings naming symbols and strings naming packages. This way,
3517 whenever packages are renamed (as in warm init), debug information is
3518 transformed along with everything else.
3519 * tweaked the optimization policy declarations which control the building
3520 of SBCL itself. Now, among other things, the system no longer saves
3521 source location debugging information. (This helps two problems at once
3522 by reducing SBCL size and by keeping SBCL from trying to look for its
3523 sources -- which may not exist -- when reporting errors.)
3524 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3525 debugging and testing purposes
3526 * cleaned up printing, making the printer call PRINT-OBJECT for
3527 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3528 methods, giving nearly-ANSI behavior
3529 * converted almost all special variables to use *FOO* naming convention
3530 * deleted PARSE-TIME functionality, since it can be done portably
3531 * moved some files out of cold init into warm init
3532 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3534 * regularized formatting of source files
3535 * added an install.sh script
3536 * fixed ridiculous memory usage of cross-compiler by making
3537 compiler/alloc.lisp not try to do pooling unless it can hook
3538 itself into the GC of the cross-compilation host. Now the system
3539 builds nicely on my old laptop.
3540 * added :SB-ALLOC in target-features.lisp-expr
3541 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3542 was not implemented)
3543 * re-did condition handling and note reporting in the compiler. Notes
3544 are no longer handled by signalling conditions. Style warnings
3545 and warnings are handled more correctly and reported in such a way
3546 that it's easy to find one or the other in your output (so that you
3547 can e.g. figure out which of many problems caused COMPILE-FILE to
3549 * changed the severity of several compiler warnings from full WARNING
3550 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3551 compiler note reporting so that it doesn't use the condition system
3552 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3553 COMPILE-FILE command)
3554 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3555 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3556 no longer supported, since their implementation was deeply intertwingled
3557 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3558 * removed bogus "support" for compiler macros named (SETF FOO), and
3559 removed the compiler macro for SETF INFO (but only after making a fool
3560 of myself on the cmucl-imp mailing list by posting a bogus patch for
3561 DEFINE-COMPILER-MACRO..)
3562 * Compiled files containing forms which have side effects on the Lisp
3563 reader (such as DEFPACKAGE forms) are now handled more correctly.
3564 (Compiler queuing of top level lambdas has been suppressed by setting
3565 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3566 * deleted various currently-unused source files, e.g. gengc.lisp. They
3567 may be added back at some point e.g. when porting to other architectures,
3568 but until they are it's distracting to distribute them and to try to
3570 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3571 there were so many of them they're just distractions, and UNCROSS is
3572 known to be able to handle the current sources
3573 * moved PROFILE functionality into TRACE, so that it will be clear
3574 how the wrapping and unwrapping of functions when you profile them
3575 interacts with the wrapping and unwrapping of functions when you
3576 trace them. (Actually, the functionality isn't there yet, but at least
3577 the interface specification is there. Hopefully, the functionality will
3578 arrive with some future maintenance release.)
3579 * removed host-oops.lisp
3580 * changed signature of QUIT function to allow UNIX-CODE argument
3581 * fixed READ-SEQUENCE bug
3582 * tweaked verbose GC output so that it looks more like the progress
3583 output that ANSI specifies for functions like LOAD
3584 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3585 * added <http://sbcl.sourceforge.com> to the banner information printed by