1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
3 * fixed bug #390: :CHARACTER-SET pathname components now work as
4 expected. (reported by Tim Daly Jr)
5 * fixed bug #391: complicated :TYPE intersections in slot
6 definitions no longer cause an error in PCL internals.
7 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
8 returning the number of octets which would be written to the
9 file-stream. (thanks to Robert J. Macomber)
10 * optimization: improved type inference for arithmetic-for
11 index variables in LOOP
13 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
14 * minor incompatible change: (SETF CLASS-NAME) and (SETF
15 GENERIC-FUNCTION-NAME) are no longer generic functions, and
16 therefore are not customizeable by user code (as seems to be at
17 least permitted and maybe required by AMOP). As a consolation,
18 however, the SBCL implementation of these functions now calls
19 REINITIALIZE-INSTANCE as specified by AMOP.
20 * bug fix: slot-definition documentation is propagated as per ANSI
21 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
22 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
23 argument, as do eslotd initialization methods. (from Pascal
24 Costanza's "Closer" project)
25 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
26 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
28 * bug fix: it is now possible to have more than one subclass of
29 STANDARD-GENERIC-FUNCTION without causing stack overflow.
30 (reported by Bruno Haible, Pascal Costanza and others)
31 * bug fix: the dependent update protocol now works for generic
32 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
34 * bug fix: condition-class instances corresponding to
35 DEFINE-CONDITION forms are now created eagerly. (reported by
36 Kalle Olavi Niemitalo on comp.lang.lisp)
37 * bug fix: floating point printing is more accurate in some
38 circumstances. (thanks to Simon Alexander)
39 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
40 merged with *DEFAULT-PATHNAME-DEFAULTS*.
41 * bug fix: callbacks on OS X now preserve stack-alignment.
42 (thanks to Cyrus Harmon)
43 * enhancement: the x86-64 disassembler is much better at
44 disassembling SSE instructions. (thanks to Lutz Euler)
45 * enhancement: CHECK-TYPE on a variable now allows type-inference
46 (thanks to Vincent Arkesteijn)
47 * optimization: improved performance of EUC-JP external format.
48 (thanks to NIIMI Satoshi)
49 * optimization: performance improvements to IO on file streams of
50 :ELEMENT-TYPE CHARACTER
51 * optimization: much faster memory allocation on x86-64
52 * optimization: faster garbage collections (latency and throughput)
54 * optimization: faster bignum subtraction and division on x86 and x86-64
55 (thanks to Lutz Euler)
56 * optimization: more accurate type-inference for loops that use a
57 floating point index variable or a negative step.
59 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
60 * bug fix: add a workaround to SBCL looping infinitely at startup on
61 Linux kernels with apparently buggy implementations of personality().
62 (thanks to Svein Ove Aas)
63 * bug fix: Unicode symbols are correctly printed in LDB backtraces
64 (thanks to David Lichteblau)
65 * bug fix: local bindings shadow global symbol macros for
66 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
67 * optimization: non-open coded uses of numeric comparison operators
68 (e.g. >) no longer cons when called with more than one parameter
69 on platforms supporting dynamic-extent allocation.
70 * enhancement: saving cores with foreign code loaded is now supported
71 on MIPS/Linux in addition to the previously supported platforms.
72 * bug fix: FIND-RESTART now tests for activity, not applicability when given
73 a restart object as identifier. (reported by Helmut Eller for CMUCL)
74 * bug fix: division by zero in sb-sprof when no samples were collected
75 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
76 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
77 (thanks to Alexander Kjeldaas)
78 * new feature: ignoring the return values of destructive functions
79 like NREVERSE signals a compile-time style-warning.
80 (thanks to Kevin Reid)
81 * new feature: the alignment of alien structure fields can be
82 explicitly specified. (thanks to Cyrus Harmon)
83 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
84 and dump core on SIGQUIT
86 ** incompatible change: threads do not inherit values of specials
87 from their parents (see manual)
88 ** bug fix: threads stacks belonging to dead threads are freed by the
89 next exiting thread, no need to gc to collect thread stacks anymore
90 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
91 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
92 ** bug fix: dynamic variable and thread start related gc lossage
93 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
95 * fixed some bugs revealed by Paul Dietz' test suite:
96 ** SUBTYPEP is slightly more accurate on heinously complicated
97 CONS types where some of the members have uncertain (in the
98 NIL, NIL sense) type relationships to each other.
100 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
101 no longer purified unless :PURIFY T is explicitly specified.
102 ** Non-purified cores are significantly smaller than before
104 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
105 * new feature: timers based on Zach Beane's excellent timer package
106 * added support for the following external formats: koi8-u,
107 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
108 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
109 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
110 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
111 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
112 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
113 * incompatible change: a threaded SBCL will no longer revert to
114 non-threaded mode on non-NPTL systems, but refuse to start entirely.
115 * bug fix: interrupts are disabled until startup is complete; no
116 more sigsegvs when receiving a signal to soon
117 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
119 * bug fix: add a workaround for the memory randomization features in
120 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
121 workaround will only be in effect on systems with the proc filesystem
123 * bug fix: printing objects of type HASH-TABLE signals a
124 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
126 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
127 have been running for over 50 days. (reported by Gilbert Baumann)
128 * bug fix: the logic for getting names of functions gets less
129 confused when confronded with alternate-metaclass
130 funcallable-instances. (reported by Cyrus Harmon)
131 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
132 consistent, even on internal alternate-metaclass objects.
133 * bug fix: flush closure information collected by physical
134 environment analysis prepass before the main pass. (bug reported
136 * bug fix: compiler pack phase does not modify a hashtable, which is
137 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
138 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
139 may be expanded. (reported by Alexander <malishev> on c.l.l)
140 * bug fix: no more style-warnings when compiling code using LAST
141 under high-SPEED low-SPACE settings. (reported by David Wallin
143 * fixed some incompatibilities between SBCL's MOP and the MOP
145 ** the METAOBJECT class is now implemented;
146 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
147 STANDARD-OBJECT, as required;
148 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
149 now compatible (as required by VALIDATE-SUPERCLASS); there
150 remains a consistency requirement over the presence or absence
151 of the FUNCTION class in the superclass list of finalized
152 classes; see the manual for more details;
153 ** the :AROUND method for COMPUTE-SLOTS on
154 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
155 requested slot ordering.
157 ** bug fix: parent thread now can be gc'ed even with a live
159 ** bug fix: binding a special with PROGV to no value is not
160 the same as that symbol not having been bound (thanks to
162 ** bug fix: binding specials is thread safe (thanks to
164 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
165 and SB-SPROF do not die with 'no handler for signal XX in
166 interrupt_handle_now(..)' anymore
167 ** bug fix: WITH-TIMEOUT works with multiple running threads
168 * fixed some bugs revealed by Paul Dietz' test suite:
169 ** ENSURE-GENERIC-FUNCTION should take a method class object for
170 the :method-class keyword argument.
172 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
173 * new port: the Solaris operating system on x86 processors is now
174 mostly supported, though some rough edges in the environment
175 remain. (thanks to Daisuke Homma)
176 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
177 space for its heap. (thanks to Thiemo Seufer)
178 * optimization: SBCL on MIPS platforms now supports dynamic-extent
179 closures. (thanks to Thiemo Seufer)
180 * minor incompatible change: eof selects abort in the debugger.
181 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
182 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
184 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
185 deprecated, and will go away in a future revision of SBCL.
186 * minor incompatible change: GC-ON and GC-OFF are no longer
187 implemented with a counter, it does not matter how many times gc
188 is switched on or off
189 * bug fix: discriminating functions for generic function classes
190 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
191 make invalid assumptions about method precedence order. (reported
193 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
194 platforms. (thanks to Thiemo Seufer)
195 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
196 * bug fix: correct pathname printing with printer escaping is on.
197 (thanks to Kevin Reid)
198 * bug fix: complex VOP definitions in "user-space" no longer trigger
199 package locks. (reported by Zach Beane)
200 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
201 for funcallable-instance functions, and is no different from
203 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
204 characters in the current readtable. (reported by Nicholas Neuss)
205 * bug fix: SUBTYPEP on various CONS types returns more a more
206 accurate acknowledgment of its certainty.
207 * optimizations: REMOVE-DUPLICATES now runs in linear time on
208 lists in some cases. This partially fixes bug 384.
209 * flush all standard streams before prompting in the REPL and the
211 * bug fix: signal handling and triggering gc do not conflict
212 directly anymore, in particular a high frequency sb-sprof does
213 not prevent gc from running
214 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
215 approximation for timezone and DST information between the
216 universal time epoch and the smallest negative 32-bit time_t.
217 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
218 year 1899 so long as the encoded time is non-negative.
219 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
220 the correct answer for non-constant rotate amounts when performing
221 an inline 32-bit rotation.
223 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
224 there is only one thread in the session
225 ** bug fix: memory leak for streams created in one thread and
226 written to in another
227 ** bug fix: lockup when compiled with gcc4
228 ** bug fix: race that allows the gc to be triggered when gc is
230 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
231 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
233 ** bug fix: finished threads are gc'ed properly
234 * fixed some bugs revealed by Paul Dietz' test suite:
235 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
236 has arguments with a different set of applicable methods from
237 the orignal arguments.
238 ** The type error thrown by MAP now has a correct expected-type
240 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
241 name a compiled function.
242 ** Three MISC tests where a large bignum was improperly coerced to
243 a float that couldn't represent that bignum during type
244 derivation were fixed.
245 ** SUBTYPEP can now handle types involving the negation of a
246 list-form FUNCTION type.
247 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
248 as (COMPLEX (AND RATIO (NOT FIXNUM))).
249 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
251 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
252 * New feature: Experimental support for bivalent streams: streams
253 opened with :element-type :default now allow character and binary
254 (unsigned-byte 8) I/O
255 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
256 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
258 * bug fix: no more highly sporadic "couldn't check whether ~S is
259 readable" when reading a stream and an interrupt hits in the middle
260 of a select system call
261 * compiler better recognizes complex arrays (reported by Eduardo
263 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
264 for variables on SBCL built with linkage-tables. (reported by Luis
266 * various error reporting improvements.
267 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
268 (Thanks to Thiemo Seufer)
269 * bug fix: nested reader invokations work correctly
270 * bug fix: it is possible to have simultaneous references to foreign
271 code and foreign data with the same name.
273 ** added x86-64 support
274 ** incompatible change: the threading api now works with thread
275 objects instead of thread ids
276 ** bug fix: threads are protected from signals and interruption when
277 starting up or going down
278 ** bug fix: a race where an exiting thread could lose its stack to gc
279 ** bug fix: don't halt on infinite error in threads if possible
280 ** fixed numerous gc deadlocks introduced in the pthread merge
281 ** bug fix: fixed thread safety issues in read and print
282 ** bug fix: debugger doesn't hang on session lock if interrupted at
283 an inappropriate moment
284 ** bug fix: run-program is now thread safe(r)
285 ** bug fix: inner with-recursive-lock no longer releases the mutex
286 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
287 * fixed some bugs revealed by Paul Dietz' test suite:
288 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
289 EXPECTED-TYPE slots filled.
290 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
292 ** MAKE-CONDITION accepts classes as type-designators.
293 ** COMPILE may never return NIL.
294 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
295 range before calling Unix time functions
297 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
298 * numerous signal handling fixes to increase stability
299 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
300 * minor incompatible change: we now correctly canonize default
301 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
302 as per the MOP, rather than the historical (INITARG INITFUNCTION
303 INITFORM). (reported by Bruno Haible)
304 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
305 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
306 for more information.
307 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
308 pathname is a directory pathname.
309 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
310 * dynamic space size on PPC has been increased to 768Mb. (thanks to
312 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
313 :METACLASS argument in addition to a class name. (reported by
314 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
315 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
316 (reported by Bruno Haible; patch from Gerd Moellmann)
317 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
319 * bug fix: more cleanups to the floating point exception handling on
320 x86-64 (thanks to James Knight)
321 * bug fix: the compiler does not try to constant fold calls of
322 COERCE and BIT-* functions when they return freshly constructed
323 objects. (reported by Nikodemus Siivola and Paul Dietz)
324 * optimization: improved the MIPS versions of generic (in the
325 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
326 * optimization: direct conversion of (unsigned-byte 32) to floats on
327 the PowerPC platform.
328 * optimization: structure instances with raw slots now use less
329 memory, and probably show better memory locality. (thanks to
331 * optimization: DYNAMIC-EXTENT declarations for lists and closures
332 are treated as requests for stack allocation on the x86-64,
333 Alpha-32, PPC and SPARC platforms.
334 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
335 the wrong file descriptor; implementation of SOCKET-OPEN-P.
336 (thanks to Tony Martinez)
338 ** gcing a dead thread can no longer lead to lockups
339 ** threads block signals until they are set up properly
340 ** errno is no longer shared by threads
341 ** interrupt-thread restores the eflags register on x86
342 ** fixed some lockups due to gc/thread interaction
343 * fixed some bugs revealed by Paul Dietz' test suite:
344 ** invalid dotted lists no longer raise a read error when
346 ** signal an error if a symbol that names a declaration is used
347 as the name of a type, or vice versa
348 ** allow using the (declare (typespec var*)) abbreviation for
349 (declare (type typespec var*)) with all type specifiers
350 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
351 ** always return NIL from PPRINT-POP when OBJECT is NIL
352 ** don't signal errors when pretty-printing malformed LABELS,
353 FLET or MACROLET forms
354 ** declarations in a DOLIST body are also in scope for the
356 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
358 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
361 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
362 * fixed cross-compiler leakages that prevented building a 32-bit
363 target with a 64-bit host compiler.
364 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
365 opened with :IF-EXISTS :OVERWRITE.
366 * fixed bug 281: error for an invalid qualifier in a short-form method
367 combination method is not signalled until the faulty method is called.
368 * bug fix: iteration variable type inferrer failed to deal with open
369 intervals. (reported by Alan Shields)
370 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
371 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
372 or more runtime options were provided to the sbcl binary.
373 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
374 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
375 * optimization: there's now a fast-path for fixnum arguments in the
376 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
377 * optimization: the code generated on x86-64 is more compact thanks
378 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
379 * bug fix: floating-point exception handling now partly works on
380 x86-64. (Thanks to James Knight)
381 * improvement to the MIPS backend from Thiemo Seufer: C-style
382 64-bit long long arguments and return values to alien functions
384 * fixed some bugs revealed by Paul Dietz' test suite:
385 ** the type-error signalled from WARN has a filled-in DATUM slot.
386 ** the type-error required when a stream is not associated with
387 a file has the stream as its datum.
388 ** type-errors on single-floats on x86-64 no longer have
389 :INVALID-OBJECT as the datum
390 ** the type-errors signalled for invalid function names now have
391 a correct expected type
392 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
393 for structures defined with a :TYPE. Documentation strings for
394 typed structures are no longer immediately discarded
395 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
396 broadcast streams and synonym streams. FILE-LENGTH now also works
397 on broadcast streams.
399 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
400 * incompatible change: the --noprogrammer option, deprecated since
401 version 0.7.5, has been removed. Please use the equivalent
402 --disable-debugger option instead.
403 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
405 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
406 inoperational for a while now) has been completely removed.
407 * null lexical environments are now printed as #<NULL-LEXENV>,
408 significantly reducing the amount of clutter in typical backtraces.
409 * documentation on weak pointers, finalization, and after GC hooks
410 has been added to the manual.
411 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
412 as other specialized array types, is much faster. SUBSEQ and
413 COPY-SEQ on such arrays have also been sped up.
414 * optimization: EQL is now more efficient when at least other argument
415 is known to be of type (OR FIXNUM (NOT NUMBER)).
416 * fixed bug: the runtime is now less vulnerable to changes in the
417 size of the SBCL object on OS X, and virtual memory is reserved for
418 all spaces that need to be at a fixed address.
419 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
420 * fixed bug: finalizers and after GC hooks that cause consing are now
422 * fixed bug: compiler error messages and summaries are now printed to
423 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
424 * fixed inference of the upper bound of an iteration variable.
425 (reported by Rajat Datta).
426 * fixed bug 211e: calling local functions with duplicated constant
427 keyword argument no longer causes a bogus style warning about an
429 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
430 ftype declaration to be disregarded. (reported by Dave Roberts)
431 * fixed bug 373: caused by erronous compilation of references to alien
432 variables in the runtime on ppc/darwin.
433 * fixed bug 376: CONJUGATE type deriver.
434 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
435 (reported by Baughn on #lisp)
436 * a cross-compiler bug on non-x86 platforms has been identified and
437 fixed. (thanks to Bruno Haible)
438 * improvements to the MIPS runtime code for increased stability.
439 (thanks to Thiemo Seufer)
440 * increased the maximimum compact environment size to allow
441 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
442 * partial workaround for bug 135: don't name the function we're
443 calling for hairy cases of EVAL, so as not to accumulate one environment
444 entry per call to EVAL. (reported by Kevin Reid)
445 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
446 * optimization: type testing for non-vector arrays should be faster.
447 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
449 * bug fix: setting 31st element of a bit vector to zero did not work
451 * bug fix: redefining a class definition which failed due to a
452 previous accessor / function clash now works (but see BUGS entry
453 #380 for more problems in this area). (thanks to Zach Beane)
454 * the long form of DEFINE-METHOD-COMBINATION disables method group
455 checking when given a single method group with pattern *. (thanks
457 * on x86 compiler supports stack allocation of results of simple
458 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
459 * support for building and running on Mac OS X 10.4 "Tiger" has been added
460 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
461 * fixed some bugs related to Unicode integration:
462 ** the restarts for recovering from input and output encoding
463 errors only appear when there is in fact such an error to
465 * fixed some bugs revealed by Paul Dietz' test suite:
466 ** MISC.549 and similar: late transformation of unsafe type
467 assertions into derived types caused unexpected code
469 ** SCALE-FLOAT type deriver is less wrong.
470 ** type derivers for EXP, LOG and similar functions compute result
471 types for complex arguments better.
472 ** (MISC.563) CONJUGATE type deriver works for very restricted
474 ** out-of-line type testers for character strings are available.
475 ** EQUAL compiler transform understands specialness of objects
477 ** accessing double-floats stored on the stack now works on x86-64.
478 ** debugger internals could sometimes create invalid lispobjs,
479 resulting in GC crashes.
480 ** MISC.548: type check weakening can convert required type into
482 ** initialization forms for bindings are not in scope of free special
485 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
486 * incompatible change: thread support for non-NPTL systems has
487 been removed - locking is buggy and unreliable. A threaded
488 SBCL build will now warn at startup and refuse to create
489 new threads, unless futex support is detected in the kernel
490 * incompatible change: the top level REPL now has only an ABORT
491 restart associated with it, not TOPLEVEL and ABORT as it used to.
492 TOP and TOPLEVEL are now available as debugger commands for
493 returning to the top level.
494 * incompatible change: forms evaluated in the REPL now use the
495 global optimization policy.
496 * incompatible change: user- and system-initialization files are
497 no longer processed with LOAD, but by READ and EVAL; hence the
498 global optimization policy, startup package, readtable, etc,
500 * The .fasl file format number has been incremented because of
501 various incompatible changes.
502 * internal entry point details and argument counts no longer appear
503 in backtraces unless explicitly requested by setting
504 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
505 * built-in and standard functions no longer have names like "top
506 level local call to FOO".
507 * fixed bug 32: functions defined in non-null lexical environments
508 now have more legible printed representation
509 * fixed bug 33: functions defined in non-null lexical environemnts
510 are now more amenable to inspection by INSPECT.
511 * workaround for bug 354: XEPs no longer appear in backtraces unless
512 explicitly requested.
513 * fixed bug: receiving the signal which results from attempting to
514 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
515 SIGBUS on other *BSDs) on architectures where the C stack is also
516 the Lisp stack (x86 and x86-64) from foreign code no longer leads
517 to debugger confusion or wild instability. (reported by Cheuksan
519 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
520 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
521 (reported by Lutz Euler)
522 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
523 compiled code. (reported by Paul Dietz)
524 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
525 specialized parameter to a method to something that is not TYPEP
526 the specializer is now possible.
527 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
528 face of package deletion.
529 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
530 pathname. (reported by David Tolpin on c.l.l)
531 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
532 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
533 STRING-STREAM and FILE-STREAM, respectively.
534 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
535 than previously; in addition, its test suite is now run on build.
536 (thanks to Luke Gorrie)
537 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
538 * optimization: added a immediate representation for single-floats
540 * fixed some bugs revealed by Paul Dietz' test suite:
541 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
542 ** attempting to create a package with a colliding nickname causes
543 correctable errors to be signalled.
544 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
545 ** several x86-64 backend bugs related to sign-extension of immediate
548 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
549 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
550 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
552 * fixed loading of multiply forward-referenced layouts.
553 (thanks to Cheuksan Wang)
554 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
555 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
556 (see COMPILE-FILE documentation for details of :PRINT option)
557 * fixed bugs 19 and 317: fixed-format floating point printing is
558 more accurate. This also fixes a bug reported by Adam Warner
559 related to the ~@F format directive.
560 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
562 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
563 dispatch table if the from-char is a dispatch macro character.
564 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
565 by the wordsize no longer ignore the last word. (reported by Lutz
567 * fixed bug in type checking of dynamic-extent variables. (reported
569 * optimization: sequence traversal functions use their freedom to
570 coerce function designators to functions.
571 * optimization: code with many calls to CLOS methods specialized on
572 CLOS classes has had redundant type checks removed.
573 * optimization: added declarations to speed up operations that access
574 the internal character database (for example STRING-UPCASE)
575 * optimization: comparison operations between floats and sufficiently small
576 fixnums no longer create extra rationals
577 * fixed some bugs related to Unicode integration:
578 ** portions of multibyte characters at the end of buffers for
579 character-based file input are correctly transferred to the
580 start of the buffer at the next read.
581 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
582 passing it through to OPEN.
583 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
584 argument given to internal calls to OPEN.
585 ** the built-in comment readers (introduced by character sequences
586 ";" and "#|") are more forgiving to encoding errors; they will
587 STYLE-WARN and then attempt to resync the stream at a character
588 boundary. (thanks to Teemu Kalvas)
589 * fixed some bugs in the x86-64 port:
590 ** Negative short int return values from c-calls are sign-extended
592 ** The stack is aligned to 16-bytes for c-calls, as required by
593 the ABI. (thanks to Cheuksan Wang)
594 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
595 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
596 for enums. (thanks to Vincent Arkesteijn)
597 ** Multiple small optimizations and bugfixes for floating point
599 * fixed some bugs revealed by Paul Dietz' test suite:
600 ** Space, Tab, Linefeed, Return and Page have the invalid
601 secondary constituent character trait.
602 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
604 ** WITH-INPUT-FROM-STRING should only update the index place on
606 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
608 ** Bit-array operations (BIT-AND and similar) worked incorrectly
609 with one-dimensional arrays with fill pointers.
610 ** TYPE-OF failed on a complex with an integer realpart and a
612 ** compiler failure during type inference for the code of form
613 (IF (EQL X (THE ...)) ...) (MISC.535).
615 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
616 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
617 platform. The port supports 61-bit fixnums, large memory spaces
618 and reloading shared object files.
619 * enhancement: saving cores with foreign code loaded is now
620 supported on ppc/Darwin in addition to the previously supported
622 * enhancement: the statistical profiler now walks deeper into the
623 call stack for more meaningful call-graphs and accrued time
624 reports (x86/x86-64 only). It also now reports time spent in
626 * enhancement: it is now possible to trace most individual methods
627 of a generic function in addition to tracing the generic function
629 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
631 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
632 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
633 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
634 produces an error. (thanks to Vincent Arkesteijn)
635 * bug fix: NAMESTRING on pathnames with :WILD components in their
636 directories works correctly. (thanks to Artem V. Andreev)
637 * fixed bug 125: compiler preserves identity of closures. (reported
639 * bug fixed: functions with &REST arguments sometimes failed with
640 "Undefined function" when compiled with (DEBUG 3). (reported by
642 * bug fix: overflow during compiling of setting element of a bit
643 vector with constant index and value. (reported by Timmy Douglas)
644 * build fix: fixed the dependence on *LOAD-PATHNAME* and
645 *COMPILE-FILE-PATHNAME* being absolute pathnames.
646 * on x86 compiler partially supports stack allocation of dynamic-extent
648 * GO and RETURN-FROM do not check the extent of their exit points
649 when compiled with SAFETY 0.
650 * fixed some bugs related to Unicode integration:
651 ** encoding and decoding errors are now much more robustly
652 handled; it should now be possible to recover even from invalid
653 input or output to the terminal. (thanks to Teemu Kalvas)
654 ** provided a first cut at implementing STRING-TO-OCTETS and
655 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
656 ** altered the SB-MD5 contributed module slightly, changing the
657 interface just enough for it to be supportable for builds where
658 lisp characters are not eight bits.
659 * fixed some bugs revealed by Paul Dietz' test suite:
660 ** the FORMATTER-generated functions for ~V[ conditionals require
661 the correct number of arguments.
662 ** READ-FROM-STRING returns the mandated second value when applied
663 to displaced strings.
664 ** the #\Rubout and #\Backspace characters are treated as invalid
665 constituent characters by the tokenizer.
667 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
668 * new feature: reloading changed shared object files with
669 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
670 * new feature: references to foreign variables and functions
671 can now be compiled and loaded before the corresponding shared
672 object file is loaded, as long as the foreign definitions are
673 available at runtime.
674 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
675 supported. (thanks to Dan Debertin)
676 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
677 just keywords. (thanks to Vincent Arkesteijn)
678 * fixed bug #331: structure-class instances corresponding to
679 DEFSTRUCT forms are now created eagerly.
680 * fixed bug #345: backtraces from calls to undefined functions work
681 on x86 as well. Related bug #61 is now also partially fixed on x86
682 (backtraces from throws to unknown catch tags.)
683 * bug fix: lambda-list parsing is now stricter vrt. order and number
684 of lambda-list keywords.
685 * bug fix: as specified by AMOP, an error is signalled if a
686 class-option appears multiple times in a DEFCLASS form. (reported
688 * bug fix: RANDOM can be compiled when the compiler derives the type
689 of its numeric argument as a disjoint set of small integers.
690 (reported by Paul Dietz)
691 * bug fix: starting a core saved with shared objects loaded when
692 those objects are not available no longer causes threaded SBCL to
693 hang. (reported by Sean Ross)
694 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
696 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
697 argument, which must always be NIL. (reported by Kalle Niemitalo)
698 * bug fix: printing 1.0d+23 no longer results in an error.
699 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
700 * bug fix: structure slot setters preserve evaluation order. (thanks
702 * fixed some bugs related to Unicode integration:
703 ** RUN-PROGRAM can allow its child to take input from a Lisp
704 stream. (reported by Stefan Scholl)
705 ** ASDF-INSTALL successfully downloads .tar.gz files in all
706 locales. (reported by Ken Causey)
707 * fixed some bugs revealed by Paul Dietz' test suite:
708 ** INCF, DECF and REMF evaluate their place form as specified in
710 ** FORMATTER expands ~{ ~} iteration directives with V or #
711 parameters correctly.
712 ** FORMATTER deals with the ~@[ ~] conditional directive where the
713 consequent uses no arguments correctly.
714 ** the system has a partial understanding of the (COMPLEX RATIO)
716 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
719 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
720 * new feature: a build-time option (controlled by the :SB-UNICODE
721 keyword feature, enabled by default) for building the system with
722 support for the entire 21-bit character space defined by the
724 * new feature: the system now has rudimentary external-format
725 support; the primary user-visible change at this time is that
726 characters with the high bit set (such as lower-case-e-acute) will
727 print correctly to a terminal in a UTF-8 environment.
728 * minor incompatible change: BASE-CHAR no longer names a class;
729 however, CHARACTER continues to do so, as required by ANSI.
730 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
731 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
732 has been moved to the SB-EXT package (temporarily re-exported from
734 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
735 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
737 * fixed bug #351: better error-handlind and reporting for malformed
739 * fixed bug #350: bignum-printing is now more memory-efficient,
740 allowing printing of very large bignums, eg. (expt 2 10000000).
741 (reported by Bruno Haible)
742 * fixed bug #302: better primitive-type selection for intersection
744 * fixed bug #308: non-graphic characters now all have names, as
745 required. (reported by Bruno Haible)
746 * bug fix: redefining a class with different superclasses now correctly
747 removes it from the direct-subclasses of its previous superclasses.
748 (reported by David Morse)
749 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
750 new value now works. (reported by Bruno Haible)
751 * bug fix: correct canonicalization of multiple non-standard slot
752 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
753 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
754 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
755 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
756 now exists, an signals an error.
757 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
758 during macroexpansion for non-iteration variables as well. (reported
759 by Bruno Haible for CMUCL)
760 * bug fix: Cyclic structures and unprintable objects in compiler
761 messages no longer cause errors. (reported by Bruno Haible)
762 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
763 and READ-FROM-STRING all now return a primary value of NIL if
764 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
765 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
766 (reported by Bruno Haible for CMUCL)
767 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
768 do not designate a condition. (reported by Bruno Haible for
770 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
771 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
772 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
773 permitting resolution in favour of any of the conflicting symbols.
774 (reported by Bruno Haible for CMUCL)
775 * bug fix: EQUAL compiler optimizations is less aggressive on
776 strings which can potentially compare true despite having distinct
777 specialized array element types.
778 * bug fix: unit enumerations can be defined without dividing by
779 zero. (thanks to Vincent Arkesteijn)
780 * FORMAT compile-time argument count checking has been enhanced.
781 (report from Bruno Haible for CMUCL)
782 * a partial workaround for the bug 262: the compiler does not try to
783 inline-expand a local function doing RETURN-FROM from a deleted
784 BLOCK. (thanks to Peter Denno for the bug report and to David
785 Wragg for the simple test case)
786 * fixed some bugs revealed by Paul Dietz' test suite:
787 ** RENAME-PACKAGE allows all package designators as new package
789 ** constraint propagation and lambda variable substitution are
790 more cautious in dealing with partially deleted code.
791 ** compiler sometimes lost reoptimization passes.
792 ** CERROR, given a condition as condition designator, passes its
793 remaining arguments to the continue format control without
795 ** Case-altering FORMAT directives work correctly on non-ASCII
797 ** The REAL type specifier handles bounds outside the floating
798 point ranges without signalling FLOATING-POINT-OVERFLOW.
799 ** Functions with IR1-transformations can create intercomponent
800 references to global functions.
801 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
803 ** FORMAT ~R treats a nil value for its first parameter correctly.
805 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
806 * enhancement: saving cores with foreign code loaded is now
807 supported on x86/NetBSD and sparc/Linux in addition to the previously
809 * bug fix: on some platforms repeated installations caused multiple
810 copies of HTML documentation to be installed -- should not happen
811 any more. (reported by Stefan Scholl)
812 * bug fix: parsing self-recursive alien record types multiple times
813 no longer causes infinite recursion. (reported by Thomas F. Burdick,
814 original patch by Helmut Eller for CMUCL)
815 * bug fix: stack-exhaustion detection works now on NetBSD as well.
816 (thanks to Richard Kreuter)
817 * bug fix: defining classes whose accessors are methods on existing
818 generic functions in other (locked) packages no longer signals
819 bogus package lock violations. (reported by François-René Rideau)
820 * bug fix: special variables as DEFMETHOD parameters no longer have
821 associated bogus type declarations. (reported by David Wragg and
823 * bug fix: read-write consistency on streams of element-type
824 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
825 * bug fix: redefiniton of the only method of a generic function with
826 no DEFGENERIC no longer emits a full WARNING. In addition,
827 redefinition of generic functions with no DEFGENERIC to an
828 incompatible lambda list now signals an error. (thanks to Zach
830 * bug fix: DEFGENERIC now works even when there's a function of the
831 same name in an enclosing lexical environment. (thanks to Zach
833 * fixed compiler failure, caused by instrumenting code during
834 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
835 * optimization: added loop analysis and improved register allocation
836 * fixed some bugs revealed by Paul Dietz' test suite:
837 ** POSITION on displaced vectors with non-zero displacement
838 returns the right answer.
839 ** (SIMPLE-STRING) is a valid type specifier for sequence
841 ** *PRINT-LEVEL* handling for slotless structures is pedantically
843 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
844 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
846 ** The justification version of the FORMAT ~< directive treats
847 non-zero minpad parameter correctly.
849 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
850 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
851 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
852 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
853 the supported interface.
854 * new feature: Single-stepping of code compiled with DEBUG 2 or
855 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
856 * new feature: saving cores with foreign code loaded is now
857 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
858 Timothy Moore's work for CMUCL)
859 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
860 parameters to * instead of NIL if no initform is supplied.
861 (reported by Johan Bockgaard)
862 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
863 correctly when FUNCALL appears as the car of the form. Note:
864 despite this FUNCALL forms are not currently subject to
865 compiler-macro expansion. (port of Raymond Toy's fix for the
866 same from CMUCL, reported by Johan Bockgaard)
867 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
868 (thanks for Teemu Kalvas)
869 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
870 case instead of terminating the iteration (thanks for Julian
871 Squires, Sean Champ and Raymond Toy)
872 * bug fix: incorrect expansion of defgeneric that caused a style
873 warning. (thanks for Zach Beane)
874 * bug fix: slot accessor effective method computation works properly
875 for classes with multiple non-standard applicable methods on
876 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
877 * on x86 compiler supports stack allocation of results of LIST and
878 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
879 CMUCL implementation by Gerd Moellmann)
880 * fixed some bugs revealed by Paul Dietz' test suite:
881 ** FORMAT strings with both the ~<~:;~> form of the justification
882 directive and pretty-printing directives cause an error.
884 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
885 * incompatible change: the internal functions
886 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
887 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
888 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
889 instead of the old functions.
890 * new feature: on platforms where "dladdr" is available foreign
891 function names now appear in backtraces. (based on Helmut Eller's
893 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
894 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
896 * documentation: ASDF manual is now distributed with SBCL.
897 * bug fix: SBCL can now load its contributed modules with REQUIRE
898 even if the system-provided entries have been removed from
899 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
901 * bug fix: backtraces involving undefined functions or assembly
902 routines are more informative. (thanks to Brian Downing)
903 * bug fix: mutually referent alien structures now work correctly.
904 (reported by Rick Taube)
905 * bug fix: structures defined by WITH-ALIEN can be referred to
906 within other definitions in the same WITH-ALIEN.
907 * bug fix: division operators (MOD, TRUNCATE and the like) with
908 constant zero divisors and integer dividends no longer generate
910 * bug fix: provide default methods for INPUT-STREAM-P and
911 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
912 * bug fix: improve the detection and resolution of MOP metacycles
913 (where effective method computation depends on the generic function
914 having its effective method computed). (reported by Bruno Haible)
915 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
916 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
917 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
918 * bug fix: pathnames with relative directory components can be
919 represented relative to default pathnames.
920 * optimization: in taking the GCD of bignums, reduce the two bignums
921 to approximately the same size (using Euclid's algorithm) before
922 applying the more sophisticated binary GCD. (thanks to Juho
924 * optimization: COUNT on bitvectors now operates word-at-a-time.
925 * optimization: ASH with a positive, but not necessarily constant,
926 (leftwards) shift, when in a modular context, is compiled to a
928 * fixed some bugs revealed by Paul Dietz' test suite:
929 ** FORMAT variable parameters ("~V<char>") are defaulted properly
930 if the corresponding argument is NIL.
931 ** FORMAT directives accepting a minpad parameter treat negative
933 ** literal commas as character parameters to FORMAT directives are
935 ** literal spaces directly after ~<Newline> directives within a
936 format-logical-block (~:< ~@:>) do not induce :FILL-style
937 conditional newlines.
938 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
939 as specified: it no longer includes conditional newlines).
940 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
942 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
943 :PER-LINE-PREFIX argument does not evaluate to a string.
945 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
946 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
947 the manual for details; for now, package locks can be disabled by
948 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
949 if no major problems are found then it is likely that they will be
950 compiled in unconditionally.
951 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
952 unsupported operators on all platforms. To load a shared library
953 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
954 object file, link it into a shared library outside of SBCL and
955 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
957 * bug workaround: ROOM T and the GC were not working together
958 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
959 reporting facility aren't preserved. That reporting has been
960 disabled, so now until and unless someone figures out how to make it
961 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
962 * minor incompatible change: as threatened around sbcl-0.8.0, the
963 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
964 The symbols are also exported from SB-PCL for backwards
965 compatibility, but more so than before SB-PCL should be treated as
966 an implementation-internal package.
967 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
969 * the SB-SPROF contrib now works on (most) non-x86 architectures.
970 It is known as of this release not to work on the Alpha, however.
971 * fixed bug #167: errors signalled due to illegal syntax in method
972 bodies are now more legible.
973 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
974 designators and can hence be used with TYPEP.
975 * fixed bug #333: CHECK-TYPE now ensures that the type error
976 signalled, if any, has the right object to be accessed by
977 TYPE-ERROR-DATUM. (reported by Tony Martinez)
978 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
979 5.1.2.3 for multiple-value place subforms. (reported by Kalle
981 * fixed bug #334: programmatic addition of slots using specialized
982 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
983 and :ALLOCATION :CLASS slots.
984 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
985 float exponents. (rereported by Peter Seibel)
986 * fixed a bug: #\Space (and other whitespace characters) are no
987 longer considered to be macro characters in standard syntax by
989 * fixed bug: initialization of condition class metaobjects no longer
990 causes an instance of the condition to be created. (reported by
992 * fixed bug: it is now possible to have slots such that
993 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
994 description is neither :INSTANCE nor :CLASS.
995 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
996 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
997 SLOT-VALUE-USING-CLASS), and no longer causes errors with
998 non-standard SLOT-DEFINITION-ALLOCATION values.
999 * fixed bugs: various race conditions handling exiting threads.
1000 CL-PPCRE's thread torture test now passes.
1001 * fixed arguably-a-bug: GC time proportional to number of threads in
1002 system even when most of them are idle
1003 * optimization: improved performance of BIT and SBIT on bit-vectors.
1004 * .fasl file incompatibility: The fasl file version number has
1005 been incremented because of changes associated with package locks.
1007 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1008 * minor incompatible change: the system no longer provides
1009 optimization hints (conditions which are TYPEP
1010 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1011 mode; these hints are still emitted when higher SPEED optimization
1013 * new contrib module: a sampling profiler (profiling by statistical
1014 sampling, rather than by instrumenting functions) is available as
1015 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1016 * the behaviour of the standard function ED is now customizeable by
1017 third parties through a hook variable: see ED's documentation
1018 string for information on the protocol.
1019 * the compiler no longer emits efficiency notes for (FUNCALL X)
1020 when the type of X is uncertain under default optimization
1022 * fixed bug 276: mutating a binding of a specialized parameter to a
1023 method to something that is not TYPEP the specializer is now
1025 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1026 exhibit the required behaviour on the x86 platform. (thanks to
1027 Peter van Eynde, Eric Marsden and Bruno Haible)
1028 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1029 even for difficult arguments. (reported by Peter Graves)
1030 * fixed bug 141a: the backquote printer now descends quoted
1032 * fixed another bug in backquote printing: no more destructive
1033 modification of the form's list structure. (reported by Brian
1035 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1036 move between its address being taken and the call to
1037 interrupt_thread, fixing a crashing race condition.
1038 * the SB-POSIX contrib implementation has been adjusted so that it
1039 no longer exhibits ridiculously poor performance when constructing
1040 instances corresponding to C structs.
1042 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1043 * minor incompatible change: the sb-grovel contrib now treats C
1044 structures as alien (in the sense of SB-ALIEN) objects rather than
1045 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1046 has implications for memory management of client code
1047 (sb-grovel-returned objects must now be manually managed) and for
1048 type safety (alien objects now have full types).
1049 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1050 used to control emission of compiler diagnostics, rather than the
1051 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1052 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1053 quality should be considered deprecated.
1054 * install.sh now installs the user manual as well
1055 * (not quite a new documentable feature, but worth considering in
1056 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1057 beginnings of a semantically meaningful condition hierarchy is
1058 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1060 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1061 designator as the defaults argument.
1062 * fixed bug: Displaced arrays whose displaced-to array has become
1063 too small now cause ARRAY-DIMENSION to signal an error, providing
1064 for safer bounds-checking. (reported by Bruno Haible)
1065 * fixed bug: DEFCLASS slot definitions with identical :READER and
1066 :WRITER names now signal a reasonable error. (reported by Thomas
1068 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1070 * fixed bug: Invalid slot specification errors now print correctly.
1071 (thanks to Zach Beane)
1072 * fixed bug 320: Shared to local slot value transfers in class
1073 redefinitions now happen corrently from superclasses as
1074 well. (reported by Bruno Haible)
1075 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1077 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1078 improper lists correctly. (reported by Bruno Haible)
1079 * fixed bug 313: source-transform for <fun-name> was erroneously
1080 applied to a call of a value of a variable with name <fun-name>.
1081 (reported by Antonio Menezes Leitao)
1082 * fixed bug 307: The obsolete instance protocol ensures that
1083 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1084 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1085 remove dead unknown-values globs from the middle of the stack.
1086 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1087 easier to resume long computations after using *BREAK-ON-SIGNALS*
1088 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1089 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1090 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1091 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1092 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1093 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1095 * fixed a (fairly theoretical) bug in string printing: if
1096 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1097 does not have array-element-type equal to the most general string
1099 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1100 function name. (thanks to Nikodemus Siivola)
1101 * fixed bug: compile-time format string checker failed on
1102 non-closed ~{. (reported by Thomas F Burdick)
1103 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1104 don't warn on legal loop code involving more than one aggregate
1105 boolean. (thanks to Nikodemus Siivola)
1106 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1107 in keyword position to MAKE-PACKAGE was not being reported as
1109 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1110 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1112 * fixed bugs 280 and 312: the checking for multiple definitions in a
1113 file is less likely to become confused by uses of inline
1115 * fixed bug: the #S reader macro performs the keyword coercion
1116 specified for slot names. (reported by Kalle Niemitalo)
1117 * fixed bug: lambda lists may contain symbols whose names start with
1118 & but are not lambda-list-keywords; their occurrence triggers a
1120 * fixed bug 321: define-method-combination argument lambda lists do
1121 not cause invalid code to be generated when &optional or &aux
1122 variables have default values. (reported by Bruno Haible)
1123 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1124 have CLOS classes; this appears also to have fixed reported
1125 instability in stack exhaustion detection.
1126 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1127 MUFFLE-WARNING when no associated restart is present is now
1129 * optimization: rearranged the expansion of various defining macros
1130 so that each expands into only one top-level form in a
1131 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1133 * optimization: used a previously little-used slot in symbols to
1134 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1136 * fixed some bugs revealed by Paul Dietz' test suite:
1137 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1139 ** Fixed an optimization bug related to inheritance of initforms
1140 from local to shared slots.
1141 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1142 ** CAST optimizer forgot to flush argument derived type.
1143 ** print/read consistency on floats is now orders of magnitude
1144 more likely. (thanks also to Bruno Haible for a similar report
1146 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1147 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1148 for objects of type REAL. Make it so.
1149 ** SXHASH is specified (infelicitously) to respect similarity,
1150 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1151 it so. (thanks to Markus Ziegler)
1152 ** on the Alpha, the compiler succeeds in compiling functions
1153 returning a known number of arguments greater than 63.
1154 ** fixed handling of invalid NIL arguments in keyword position
1156 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1158 ** provided a readably-printable representation for RANDOM-STATE
1160 ** ensured that pathnames, where they have a namestring, always
1161 print using #P"..." syntax.
1163 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1164 * Support for the forthcoming 2.0 version of the NetBSD kernel
1165 running on x86 hardware has been added. (thanks to Perry
1166 E. Metzger most immediately, and others for their past work)
1167 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1168 current release version; SBCL's OpenBSD support had been broken
1169 since about the time of OpenBSD's switch to ELF binary format.)
1170 * [placeholder for DX summary]
1171 ** user code with &REST lists declared dynamic-extent, under high
1172 speed or space and low safety and debug optimization policy.
1173 * The manual has been converted to Texinfo format and the debugger
1174 chapter from the cmucl manual has been added.
1175 * A facility has been added to extract documentation strings from
1176 sbcl and store them as Texinfo-formatted snippets for inclusion in
1177 the manual (via Texinfo's @include directive)
1178 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1179 the test case to Dave Roberts)
1180 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1181 pointers. (reported by Sean Ross)
1182 * bug fix: PROFILE output is printed nicely even for large numerical
1183 values. (thanks to Zach Beane)
1184 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1185 greater than 32 handle EOF correctly.
1186 * bug fix: on X86 an immediate argument of the IMUL instruction is
1187 correctly printed in disassembly. (thanks to Lutz Euler)
1188 * bug fix: class slots in redefined classes preserve their old
1189 values. (thanks to Bruno Haible and Nikodemus Siivola)
1190 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1191 succeeds. (reported by Marco Baringer)
1192 * fixed some bugs revealed by Paul Dietz' test suite:
1193 ** READ-SEQUENCE now works on ECHO-STREAMs.
1194 ** RATIONALIZE works more according to its specification. (thanks
1197 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1198 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1199 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1200 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1201 should matter to you only if you rebind the printer control
1202 variables and then find you want different bindings in the
1203 debugger than in the ordinary execution of your program.)
1204 * The runtime build system has been tweaked to support building
1205 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1206 assembler and linker. (thanks to Nikodemus Siivola)
1207 * Unbound, undefined, undeclared variables now trigger full
1208 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1209 more often programmer error than deliberate exploitation of undefined
1211 * optimization: the hash algorithm for strings has changed to one
1212 that is less vulnerable to spurious collisions. (thanks to Juho
1214 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1215 needless bounds checking. (thanks to Juho Snellman)
1216 * optimization: implemented multiplication as a modular
1217 (UNSIGNED-BYTE 32) operation on the PPC backend.
1218 * fixed some bugs revealed by Paul Dietz' test suite:
1219 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1221 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1222 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1223 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1225 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1227 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1229 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1230 their output stream on EOF from read.
1231 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1232 have been read to end-of-file.
1233 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1235 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1236 description of determination of which consecutive characters
1238 ** Printing the "Space" character with escaping on now yields "#\\ ",
1239 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1240 ** Reading floating-point numbers with *READ-BASE* set to a number
1241 less than 10 works correctly.
1242 ** Reading floating-point numbers with *READ-BASE* set to a number
1243 more than 10 works correctly.
1244 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1245 the readtable currently in effect.
1247 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1248 * minor incompatible change: parsing of namestrings on a physical
1249 (Unix) host has changed; numbers after the final #\. in a
1250 namestring are no longer interpreted as a version field. This is
1251 intented to be largely invisible to the user, except that the
1252 meaning of the namestring "*.*.*" has changed: it now refers to a
1253 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1254 should usually be replaced by
1255 (make-pathname :name :wild :type :wild :version :wild)
1256 with the added benefit that this is more likely to be portable.
1257 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1258 option to OPEN now signals an error if the file being opened
1259 exists; this may have an impact on existing code.
1260 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1261 signals received, on the PowerPC platforms (both Linux and
1262 Darwin). (thanks to Pierre Mai for pointing out the location of
1264 * several fixes on OS X: The system now builds and runs cleanly on
1265 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1266 (thanks to Brian Mastenbrook)
1267 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1268 second-resolution: integer multiples of 1/3600 between -24 and 24.
1269 (thanks to Vincent Arkesteijn)
1270 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1271 type when called with 1 argument; PEEK-CHAR checked type of
1272 PEEK-TYPE only after having read first character from a
1273 stream. (reported by Peter Graves)
1274 * bug fix: the garbage collector now has much better locality
1275 behaviour, and in particular no longer treats all memory as being
1276 exhausted when many small objects point to each other in a deeply
1278 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1279 recognized as being TYPEP their class.
1280 * bug fix: the PUSHNEW documentation string has been corrected.
1281 (thanks to Vincent Arkesteijn)
1282 * bug fix: defaulting of the value for the last of an atypically
1283 large number of multiple values being bound was not being
1284 performed correctly on the Alpha or PPC platforms
1285 * optimization: implemented multiplication as a modular
1286 (UNSIGNED-BYTE 32) operation on the x86 backend.
1287 * optimization: SEARCH on simple-base-strings can now be open-coded.
1288 (see also contrib/compiler-extras.lisp for inspiration for
1289 teaching the compiler about the Boyer-Moore algorithm).
1290 * value, returned by MAX (and MIN) called with several EQUALP, but
1291 not EQL, arguments now does not depend on compiler settings.
1292 * fixed some bugs revealed by Paul Dietz' test suite:
1293 ** in stack analysis liveness information is propagated from
1294 non-local entry points.
1295 ** pathwise CAST removing failed when the CAST node did not start
1297 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1298 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1300 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1301 host is already defined.
1302 ** RENAME-FILE works on streams instead of signalling an internal
1304 ** PEEK-CHAR uses the current readtable when determining whether
1305 or not a character is whitespace.
1306 ** MERGE-PATHNAMES handles the case when the pathname does not
1307 specify a name while the default-pathname specifies a version.
1308 ** Pathnames now stand a better chance of respecting print/read
1310 ** Attempting to use standardized file system operators with a
1311 pathname with invalid :DIRECTORY components signals a
1313 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1315 ** DIRECTORY on logical pathnames is more correct.
1316 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1317 signal a TYPE-ERROR if their argument is not a stream.
1318 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1319 designator argument does not designate a stream.
1320 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1321 examining the synonym.
1322 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1324 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1325 element-type larger than ([UN]SIGNED-BYTE 32).
1327 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1328 * When built with the :SB-FUTEX feature, threaded builds now take
1329 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1330 for faster/more reliable mutex and condition variable support.
1331 * Incompatible change (but one you probably shouldn't have been using
1332 anyway): the interface and code for arbitrating between multiple
1333 threads in the same user session has been redesigned.
1334 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1335 error when called without an explicit environment argument.
1336 (thanks to Nikodemus Siivola)
1337 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1338 confused about their position. (thanks to Adam Warner and Gerd
1340 * bug fix: Pretty printing backquoted forms with unquotations in the
1341 argument list position of various code constructs such as LAMBDA
1342 now works correctly. (reported by Paul Dietz)
1343 * bug fix: Pretty printing unquotations no longer loses all
1344 stream position information.
1345 * optimization: performance of string output streams is now less
1346 poor for multiple small sequence writes.
1347 * optimization: performance of CSUBTYPEP in the presence of complex
1348 expressions involving CONS and NOT many times has been improved.
1349 (reported by Paul Dietz)
1350 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1352 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1353 streams for the REPL, for the debugger, and so on. (thanks to
1355 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1356 * fixed some bugs revealed by Paul Dietz' test suite:
1357 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1358 is ignored if it is too small, rather than propagating through
1359 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1360 ** extremely complex negations of CONS types were not being
1361 sufficiently canonicalized, leading to inconsistencies in
1363 ** VALUES tranformer lost derived type.
1365 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1366 * fixed a bootstrapping bug: the build process no longer assumes
1367 that the various BOOLE-related constants have the same value in
1368 host and target lisps. (noted by Paul Dietz' test suite on an
1369 SBCL binary built from CLISP)
1370 * The system can now be dynamically linked on the MIPS platform,
1371 which enables dynamic loading of foreign code from Lisp. (thanks
1372 to Ralf Baechle for discussions on the MIPS ABI)
1373 * The system now records debugging information for its own source
1374 files in a filesystem-position-independent manner, relative to
1375 the "SYS" logical host.
1376 * fixed a compiler bug: MV-LET convertion did not check references
1377 to the "max args" entry point. (reported by Brian Downing)
1378 * tweaked disassembly notes to be less confident about proclaiming
1379 some instruction as an LRA. (thanks to Brian Downing)
1380 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1381 now each have their own history, command character, and other
1382 characteristics. (thanks to David Lichteblau)
1383 * fixed some bugs revealed by Paul Dietz' test suite:
1384 ** compiler failure in compiling LOGAND expressions including a
1386 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1387 shift greater than 32.
1388 ** FLUSH-DEST did not mark blocks for type check regeneration.
1389 ** HANDLER-CASE failed to accept declarations in handler clauses
1390 in some circumstances.
1392 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1393 * New code in contrib/sb-introspect (still probably not entirely
1394 stable yet) provides some support for smart Lisp development
1395 environments like SLIME.
1396 * The conditions signalled for errors occurring when loading .fasl
1397 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1398 in a way which should help ASDF recover gracefully.
1399 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1400 stuff has been cleaned up. If you code contrib/ stuff, this might
1401 affect you, and you can look at contrib/README, contrib/STANDARDS,
1402 and/or the 0.8.4.27 diff to check.
1403 * In full calls the compiler now does not generate checks for declared
1404 argument types for all arguments.
1405 * various threading fixes
1406 ** and some experimental patches which didn't make it into
1407 the main tree for this release, but which are shipped in
1408 contrib/experimental-thread.patch as a possible fix for some
1409 failures (deadlock, spinning...) in GC-intensive multithreaded
1411 * fixed PPC build problem (source code incompatibility of different
1412 library versions): added offsetof() hackery which attempts to divine
1413 where glibc maintainers put uc_mcontext today
1414 * fixed bug 282: compiler does not trust type assertions while passing
1415 arguments to a full call.
1416 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1417 &OPTIONAL VALUES type parameter.
1418 * fix bug 214: algorithm for noting rejected templates is now more
1419 similar to that of template seletion. (also reported by rydis on
1421 * fixed bug 141b: printing backquoted information readably and prettily
1422 inserts a space where necessary.
1423 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1424 (CHARACTER 10) are now reported as errors, rather than propagated
1425 as unknown types. (reported by piso on #lisp)
1426 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1427 with values NIL and :ERROR. (thanks to Milan Zamazal)
1428 * fixed bug 191c: CLOS now does proper keyword argument checking as
1429 described in CLHS 7.6.5 and 7.6.5.1.
1430 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1431 longer raise an error; further, using a list as a for-as-arithmetic
1432 counter now raises a meaningful error.
1433 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1434 now understood by sequence creation functions such as MAKE-SEQUENCE
1436 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1437 a STRING-INPUT-STREAM.
1438 * compiler enhancement: SIGNUM is now better able to derive the type
1440 * type declarations inside WITH-SLOTS are checked. (reported by
1442 * fixed some bugs revealed by Paul Dietz' test suite:
1443 ** incorrect optimization of TRUNCATE for a positive first
1444 argument and negative second.
1445 ** compiler failure in let-convertion during flushing dead code.
1446 ** compiler failure while deriving type of TRUNCATE on an
1447 interval, containing 0.
1448 ** ASH of a negative bignum by a negative bignum count now returns
1450 ** intersection of CONS types now canonicalizes properly, fixing
1451 inconsistencies in SUBTYPEP.
1453 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1454 * incompatible change: The --disable-debugger command line
1455 option now clobbers the debugger at a more fundamental
1456 level, by redefining #'INVOKE-DEBUGGER instead of by
1457 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1458 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1459 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1460 enter the debugger REPL and then suffer recursive errors
1461 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1462 while under the new system, BREAK in --disable-debugger mode
1463 terminates the system just as an unhandled error would.
1464 * fixed compiler performance when processing loops with a step >1;
1465 * bug fix: DOCUMENTATION now retrieves generic function
1466 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1467 support has been systematized, and now supports the methods
1468 specified by ANSI, along with a default method and a method for
1469 slot documentation. (reported by Nathan Froyd)
1470 * bug fix: effective methods associated with a generic function are
1471 no longer cached over a change of that generic function's method
1472 combination. (reported by Andreas Fuchs)
1473 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1474 names a non-existent directory. (thanks to Andreas Fuchs)
1475 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1476 the PPC platform, lead to stack corruption; this has been fixed.
1477 (reported by Rainer Joswig)
1478 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1479 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1480 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1481 arithmetic in general, is now much more reliable on the PPC
1483 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1484 platform now returns the right answer.
1485 * optimization: restored some effective method precomputation in
1486 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1487 precomputation is now tunable.
1488 * optimization: compiler-internal data structure use has been
1489 reviewed, and changes have been made that should improve the
1490 performance of the compiler by about 20%.
1491 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1492 simple-base-strings and simple-bit-vectors is improved.
1493 * optimization: the optimization of 32-bit logical and arithmetic
1494 functions introduced in version 0.8.3 on the x86 has been
1495 implemented on the mips, ppc and sparc platforms; an
1496 implementation of the same facility, but for 64-bit arithmetic,
1497 has been added for the alpha.
1498 * microoptimization: the compiler is better able to make use of the
1499 x86 LEA instruction for multiplication by constants.
1500 * bug fix: in some situations compiler did not report usage of
1501 generic arithmetic in (SPEED 3) policy.
1502 * bug 145b fix: compiler used wrong type specifier while converting
1503 MEMBER-types to numeric.
1504 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1506 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1507 index argument now works properly on the Alpha platform.
1508 * bug fix: floating point exception treatment on the Alpha platform
1510 * bug fix: FILE-POSITION works much better on string input and
1511 output streams. (thanks to Nikodemus Siivola)
1512 * bug fix: many threading/garbage collection symptoms sorted.
1513 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1514 might be pseudo-atomic.
1515 * internal change: Stopping for GC is now done with signals not
1516 ptrace. GC is now done in whichever thread wanted it, instead of
1518 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1520 * bug fix: result form in DO is not contained in the implicit
1522 * incompatible change: ICR structure is changed; the value part of
1523 CONTINUATION is now called LVAR; corresponding functions are
1524 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1525 * added type deriver for ISQRT (thanks to Robert E. Brown).
1526 * bug fix: better support for loading from the command line when an
1527 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1529 * fixed some bugs revealed by Paul Dietz' test suite:
1530 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1531 ** ROUND and FROUND now give the right answer when given very
1532 small float arguments.
1533 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1535 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1536 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1537 ** LCM should return a non-negative integer.
1538 ** PARSE-INTEGER returned the index of a terminator instead of the
1539 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1540 ** PARSE-INTEGER returned an incorrect index being applied to a
1542 ** LCM with two arguments of 0 returns 0 rather than signalling
1544 ** unsigned addition of a 32-bit constant with the high bit set no
1545 longer causes an internal compiler error on the x86.
1546 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1547 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1548 with negative last argument.
1549 ** byte specifiers with zero size and position no longer cause
1550 an error during type derivation.
1551 ** bignum multiplication on the Alpha platform now returns the
1553 * porting: The system now builds on SuSE AMD64, although it still
1554 generates a 32-bit binary.
1555 * .fasl file incompatibility: The fasl file version number has
1556 been incremented (because of the changes to internal compiler
1557 data structures referred to above).
1559 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1560 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1561 more accurately, on the Darwin kernel running on PowerPC hardware.
1562 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1563 * Compiler code deletion notes now signal a condition of type
1564 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1565 an associated MUFFLE-WARNING restart.
1566 * The compiler now performs limited argument count validation of
1567 constant format strings in FORMAT, and where appropriate in ERROR,
1568 CERROR and WARN. (thanks to Gerd Moellmann)
1569 * New ASDF-INSTALL contrib can be used for automatic download and
1570 installation of third-party Lisp code from CCLAN or other sites
1572 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1573 which forces another thread to execute a function supplied by the
1575 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1576 now accept and act upon their :ELEMENT-TYPE keyword argument.
1577 (reported by Martin Atzmueller, Edi Weitz)
1578 * bug fix: FILE-POSITION now accepts position designators up to
1579 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1580 is the greater. (thanks to Patrik Nordebo)
1581 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1582 Kalle Olavi Niemitalo)
1583 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1584 printable. (reported by Eric Marsden)
1585 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1586 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1587 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1588 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1589 (thanks to Stig Sandoe)
1590 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1591 UNREAD-CHAR now correctly includes the unread character in the
1592 target sequence. (thanks to Gerd Moellmann)
1593 * bug fix in threaded builds: the system can now be suspended and
1594 resumed by shell job control with minimal disruption.
1595 * bug fixes in times and timezones >2038AD
1596 * better handling of "where is GNU make?" problem in build scripts
1597 (thanks to Nikodemus Siivola)
1598 * new optimization: inside a named function any reference to a
1599 function with the same name is considered to be a self-reference;
1600 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1601 optimization quality.
1602 * new optimization on x86: logical functions and + now have
1603 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1604 used when the result is truncated to 32 bits.
1605 * VALUES declaration is partially enabled.
1606 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1607 * fixed some bugs revealed by Paul Dietz' test suite:
1608 ** The system now obeys the constraint imposed by
1609 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1610 types form a lattice under type intersection.
1611 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1612 ** ASSOC now ignores NIL elements in an alist.
1613 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1614 and (1+ MOST-POSITIVE-FIXNUM) answers.
1615 ** The addition of a method with invalid qualifiers to a generic
1616 function does not cause an error to be signalled immediately;
1617 a warning is signalled, and the error is generated only on
1618 calling the generic function.
1619 * changed .fasl file version number, in part to add type codes for
1620 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1621 obscure ANSI requirements
1623 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1624 * fixed bug 148: failure to inline-expand a local function left
1625 garbage, confusing the compiler.
1626 * fixed bugs 3cd: structure slot readers perform type check if the
1627 slot can have an invalid value (i.e. it is either not initialized
1628 or can be written with a less specific slot writer).
1629 * bug fix: the compiler now traps array references to elements off
1630 the end of an array; previously, the bounds checking in some
1631 circumstances could go off-by-one.
1632 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1634 * type declarations for array element types now obey the description
1635 on the CLHS page "Declaration TYPE", as per discussions on
1636 sbcl-help around 2003-05-08. This means that a declaration
1637 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1638 declaration, all references to BAR will be asserted or assumed
1639 (with THE, so dependent on compiler policy) to involve objects of
1640 type FOO. Note that no such declaration is implied in
1641 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1642 * declared types of functions from the "Conditions"
1643 chapter. (reported by Paul Dietz)
1644 * bug fix: CERROR accepts a function as its first argument.
1645 * bug fix: NTH an NTHCDR accept a bignum as index
1646 arguments. (reported by Adam Warner)
1647 * optimization: character compare routines now optimize comparing
1648 against a constant character. (reported by Gilbert Baumann)
1649 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1650 argument now works properly on the MIPS platform.
1651 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1652 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1653 declared to have a functional type, does not cause an error
1655 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1656 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1657 * fixed bug: if last continuation of a deleted block has a
1658 destination, this destination should be deleted too. (reported by
1660 * fixed a bug in the bootstrap process: the host compiler's values
1661 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1662 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1663 test case from Patrik Nordebo)
1664 * improved the ability of the disassembler on the PPC platform to
1665 provide helpful disassembly notes.
1666 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1667 the class in more cases than previously.
1668 * bug fix: FILE-POSITION now understands :START and :END for
1669 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1670 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1671 8) data. (thanks to David Lichteblau)
1672 * bug fix: it is possible to add a method to a generic function
1673 without lambda list.
1674 * bug fix: reader failed to signal END-OF-FILE inside an
1675 object representation. (reported by Nikodemus Siivola)
1676 * fixed some bugs revealed by Paul Dietz' test suite:
1677 ** LAST and [N]BUTLAST should accept a bignum.
1678 ** condition slot accessors are methods.
1679 ** (VECTOR NIL) is a subtype of STRING.
1681 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1682 * minor incompatible change: some nonsensical specialized lambda
1683 lists (used in DEFMETHOD) which were previously ignored now signal
1685 * minor incompatible change: the system is now aware of the types of
1686 variables in the COMMON-LISP package, and will signal errors for
1687 most violations of these type constraints (where previously they
1688 were silently accepted).
1689 * minor incompatible change: COMPILE-FILE now uses the freedom
1690 afforded (ANSI 3.2.2.3) to use derived function types for
1691 functions defined in the same file. This also permits the system
1692 to warn on static type mismatches and function
1693 redefinition. (Currently it does not work with high DEBUG level.)
1694 * minor incompatible change: VALUES declaration is disabled.
1695 * When issuing notes, the compiler now signals a condition of type
1696 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1697 restart for use in user handlers. It is expected that the
1698 COMPILER-NOTE condition will eventually become a condition
1699 supertype to a hierarchy of note types, which will then be
1700 handleable in a similar fashion. However, at the moment, no such
1701 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1702 but it's an implementation detail, not a classification for the
1704 * Changes in type checking closed the following bugs:
1705 ** type checking of unused values (192b, 194d, 203);
1706 ** template selection based on unsafe type assertions (192c, 236);
1707 ** type checking in branches (194bc).
1708 * A short form of VALUES type specifier has ANSI meaning (it has
1709 increased the number of situations when SBCL cannot perform type
1711 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1712 keywords or constants is permissible.
1713 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1714 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1715 classes. (thanks to Antonio Martinez)
1716 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1717 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1718 argument to a pretty-print stream. Instead, it leaves any such
1719 operations to DESCRIBE-OBJECT methods.
1720 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1722 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1723 lambda lists. (thanks to David Lichteblau)
1724 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1725 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1726 (thanks to Gerd Moellmann)
1727 * fixed bug 246: increased compilation speed of long
1728 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1730 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1732 * DEFCONSTANT now throws a condition of type
1733 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1734 constant to a non-EQL value; CONTINUE and ABORT restarts
1735 respectively change and preserve the value.
1736 * fixed bug 63: The code walker, part of the implementation of CLOS,
1737 is now better at handling symbol macros.
1738 * bug fix: There is no longer an internal implementation type named
1739 CL:LENGTH. (reported by Raymond Toy)
1740 * bug fix: In macro-like defining macros/special operators the
1741 implicit block does not enclose the lambda list.
1742 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1743 enclosed in parentheses) are not suitable as type specifiers, and
1744 their use properly signals an error now.
1745 * bug fix: An argument count mismatch for a type specifier in code
1746 being compiled no longer causes an unhandled error at compile
1747 time, but signals a compile-time warning.
1748 * fixed simple vector readable printing
1749 * bug fix: DESCRIBE takes more care over whether the class
1750 precedence list slot of a class is bound before accessing it.
1751 (reported by Markus Krummenacker)
1752 * bug fix: FORMATTER can successfully compile pretty-printer format
1753 strings which use variants of the ~* directive inside.
1754 * bug fix: SEARCH now applies its TEST predicate to the elements of
1755 the arguments in the correct order. (thanks to Wolfhard Buss)
1756 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1757 in type inference. (thanks to Robert E. Brown)
1758 * bug fix: Reading in symbols with an explicit package name of ""
1759 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1760 * fixed some bugs revealed by Paul Dietz' test suite:
1761 ** NIL is now allowed as a structure slot name.
1762 ** Arbitrary numbers, not just REALs, are allowed in certain
1763 circumstances in LOOP for-as-arithmetic clauses.
1764 ** Multiple class redefinitions before slot access no longer
1765 causes a type error.
1766 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1767 association between the name and a class.
1768 ** Generic functions with non-standard method-combination and over
1769 five methods all of which return constants no longer return NIL
1770 after the first few invocations. (thanks to Gerd Moellmann)
1771 ** CALL-NEXT-METHOD with no arguments now passes the original
1772 values of the arguments, even in the presence of assignment.
1773 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1775 ** DISASSEMBLE works with closures and funcallable instances.
1776 ** ADD-METHOD now returns the generic function, not the new method.
1777 ** FIND-METHOD signals an error if the lengths of the specializers
1778 is incompatible with the generic function, even if the ERRORP
1780 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1781 which its argument is a member.
1782 ** DEFCLASS only redefines the class named by its class-name
1783 argument if that name is the proper name of the class;
1784 otherwise, it creates a new class.
1785 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1786 of the UNBOUND-SLOT condition to the name of the slot.
1787 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1788 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1789 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1790 SLOT-MAKUNBOUND in the specified fashion.
1792 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1793 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1794 cross-compilation host. As a consequence, we can now bootstrap our
1795 way up to SBCL starting with a bare gcc toolchain and human-readable
1796 source code (first the source to CLISP, then the source to SBCL).
1797 * A contributed module containing a partial implementation of the
1798 simple-streams interface has been included. (thanks to Rudi
1800 * A contributed module implementing the RFC1321 Message Digest
1801 Algorithm, known as MD5, has been included.
1802 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1803 no longer has any effect, as the code controlled by this feature
1804 has been deleted. (As far as we know, no-one has ever built using
1805 this feature, and its semantics were confused in any case).
1806 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1807 work on conditions (as required by the ANSI specification),
1808 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1809 expected behaviour on conditions. Users should note, however,
1810 that such behaviour is not required by the ANSI specification,
1811 and so use of this behaviour may render their code unportable.
1812 * fixed some bugs revealed by Paul Dietz' test suite:
1813 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1815 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1816 ** SXHASH on condition objects no longer returns NIL.
1817 ** :ALLOCATION :CLASS slots are better treated; their values are
1818 updated on class redefinition, and initforms inherited from
1819 superclasses are applied.
1820 ** REMOVE-METHOD returns its generic function argument even when
1821 no method was removed.
1822 ** SHARED-INITIALIZE now initializes the values of the requested
1823 slots, including those with :ALLOCATION :CLASS.
1824 ** ALLOCATE-INSTANCE now works on structure classes defined via
1825 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1827 ** SLOT-EXISTS-P now works on conditions, as well as structures
1829 ** MAKE-LOAD-FORM now has the required methods on
1830 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1831 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1832 keyword, and now implements the SLOT-NAMES argument.
1833 ** methods with &OPTIONAL arguments no longer allow too many
1834 arguments to be passed in the call without error.
1835 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1836 option is consistent with the required arguments of the generic
1837 function lambda list.
1838 * bug fix: REQUIRE accepts a string designator. (Thanks to
1840 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1841 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1842 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1843 * bug fix: The compiler now checks for duplicated variables in macro
1845 * bug fix: SETQ on globals returns the correct value.
1846 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1847 not a COMPILER-ERROR (followed by some other strange error on
1848 choosing the CONTINUE restart).
1849 * bug fix: make.sh and friends are now more consistent in the way that
1850 they look for GNU "make".
1852 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1853 * experimental native threads support (on x86 Linux >=2.4 only).
1854 This is not compiled in by default: you need to add :SB-THREAD to
1855 the target features. See the "Beyond ANSI" chapter of the manual
1857 * fix for longstanding nonANSIism: The old distinction between
1858 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1859 The return value from CL:FIND-CLASS is now a CLOS class, and
1860 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1861 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1862 * An interface to the MetaObject Protocol, as described in Kiczales,
1863 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1864 MIT Press, 1991, is available from the SB-MOP package.
1865 * incompatible change: the SB-PCL package should now be considered
1866 a private implementation detail, and no longer a semi-private MOP
1868 * minor incompatible change: due to rearrangement for threads, the
1869 control stack and binding stack are now allocated at arbitrary
1870 addresses instead of being hardcoded per-port. Users affected by
1871 this probably have to be doing advanced things with shared
1872 libraries, and will know who they are.
1873 * minor incompatible change: Previously, all --eval forms used were
1874 processed with READ before any of them were processed with EVAL.
1875 Now each --eval form is processed with both READ and EVAL before
1876 the next --eval form is processed. (Thus package operations like
1877 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1878 work as the user might reasonably expect.)
1879 * minor incompatible change: *STANDARD-INPUT* is now only an
1880 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1882 * minor incompatible change: Y-OR-N-P is now character-oriented,
1883 not line oriented. Also, YES-OR-NO-P now works without errors.
1884 (thanks to Antonio Martinez)
1885 * sb-aclrepl module improvements: an integrated inspector, added
1886 repl features, and a bug fix to :trace command.
1887 * Known functions, which cannot be open coded by the backend, are
1888 considered to be able to check types of their arguments. (fixing
1889 a bug report by Nathan J. Froyd)
1890 * fixed a bug in computing method discriminating functions: It is
1891 now possible to define methods specialized on classes which have
1892 forward-referenced superclasses. (thanks to Gerd Moellmann)
1893 * fixed evaluation order in optional entries (reported by Gilbert
1895 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1896 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1897 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1898 required-by-AMOP NAME argument, as well as CLASS and
1899 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1900 * fixed bug 20: DEFMETHOD can define methods using names that are
1901 not the proper names of classes to designate class specializers.
1902 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1903 Unix file descriptors, instead of blowing up. (thanks to Antonio
1905 * Garbage collection refactoring: user-visible change is that a
1906 call to the GC function during WITHOUT-GCING will not do garbage
1907 collection until the end of the WITHOUT-GCING. If you were doing
1908 this you were probably losing anyway.
1909 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1910 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1911 TYPEP the latter but not the former.
1912 * The compiler issues a full WARNING for calls to undefined functions
1913 with names from the CL package.
1914 * MAP-INTO for a vector destination is open coded. (reported by
1915 Brian Downing on c.l.l)
1916 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1917 documentation string.
1918 * fixed some bugs revealed by Paul Dietz' test suite:
1919 ** COPY-ALIST now signals an error if its argument is a dotted
1921 ** Condition slots are now accessed more correctly in the presence
1922 of multiple initargs for a given slot.
1923 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1924 exclude restarts of the same name associated with a different
1926 ** DEFCLASS of forward-referenced classes with another
1927 forward-referenced class in the superclasses list no longer
1929 ** Condition slots are now initialized once each, not multiple
1930 times. (thanks to Gerd Moellmann)
1931 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1933 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1934 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1935 arguments contain duplicated elements.
1936 ** RESTART-CASE understands local macros.
1937 ** RESTART-CASE associates exactly its own restarts with a condition.
1938 ** ENDP in safe mode checks its argument to be of type LIST.
1939 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1940 in question is unbound.
1941 ** Optimized MAKE-INSTANCE functions no longer cause internal
1942 assertion failures in the presence of duplicate initargs.
1943 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1944 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1945 propagated even in the ctor optimized implementation of
1947 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1949 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1950 * a better implementation of SXHASH on (simple) bit vectors,
1951 measured both in execution speed and in distribution of results
1952 over the positive fixnums, has been installed. Likewise, a better
1953 implementation of EQUAL for simple bit vectors is now available.
1954 * fixed CEILING optimization for a divisor of form 2^k.
1955 * fixed bug 240 (emitting extra style warnings "using the lexical
1956 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1957 by Antonio Martinez)
1958 * fixed SXHASH, giving different results for NIL depending on type
1959 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1960 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1961 variable. (found by Rolf Wester)
1962 * SBCL does not ignore type declarations for special
1963 variables. (reported by rif on c.l.l 2003-03-05)
1964 * some bug fixes in contrib/sb-aclrepl/
1965 * fixed some bugs revealed by Paul Dietz' test suite:
1966 ** a bug in the CONS type specifier, whereby the CAR and CDR
1967 types got intertwined, has been fixed;
1968 ** the type system is now able to reason about the interaction
1969 between INTEGER and RATIO types more completely;
1970 ** APPEND, [N]REVERSE and NRECONC check that those their
1971 arguments, which must be proper lists, are really so;
1972 ** An array specialized to be unable to hold elements has been
1973 implemented, as required -- yes, really -- by ANSI;
1974 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1975 on malformed property lists;
1977 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1978 * incompatible packaging change: in line with Unix convention,
1979 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1980 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1981 * REQUIRE and PROVIDE are now optionally capable of doing something
1982 useful. See the documentation string for REQUIRE.
1983 * infrastructure for a managed SBCL contrib system: contributed
1984 modules in this release include:
1985 ** the ASDF system definition facility;
1986 ** an interface to the BSD Sockets API;
1987 ** an ACL-like convenience interface to the repl;
1988 (thanks to Kevin Rosenberg)
1989 ** an implementation of ROTATE-BYTE, with efficient implementation
1991 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1992 gives a closer approximation to the right answer than previously.
1993 (thanks to Raymond Toy)
1994 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1995 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1996 optional environment arguments, as required by ANSI.
1997 * fixed bugs in other functions taking environment objects, allowing
1998 calls with an explicit NIL environment argument to be compiled
2000 * fixed bug 228: primary return values from
2001 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2002 COMPILE or FUNCTION.
2003 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2004 :TYPE will no longer signal errors on innocuous objects.
2005 * fixed bug 231b: SETQ is better at respecting type declarations in
2006 the lexical environment.
2007 * fixed a bug in DEFCLASS: classes named by symbols with no or
2008 unprintable packages can now be defined.
2009 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2010 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2011 * fixed compiler failure related to checking types of functions.
2012 (reported by Robert E. Brown)
2013 * the compiler is now much more consistent in its error-checking
2014 treatment of bounding index arguments to sequence functions: in
2015 (SAFETY 3) code, errors will be signalled in almost all cases if
2016 invalid sequence bounding indices are passed to functions defined
2017 by ANSI to operate on sequences.
2018 * fixed a bug in the build procedure: documentation of SBCL-specific
2019 packages is now preserved and available in the final Lisp image.
2020 * lifted FDEFINITION lookup out of loops in the implementation of
2021 many list operations. (thanks to Robert E. Brown)
2022 * fixed a bug in the reader: the #n# reader macro now works for
2023 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2024 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2025 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2026 E. Brown and Tony Martinez respectively)
2027 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2028 SLOT-BOUNDP: in particular, it is now able to optimize them much
2029 better, and is now not vulnerable to having packages renamed.
2030 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2031 always called when a slot is not present in an instance. (thanks
2033 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2034 longer signal an error on unreading a character following EOF on
2035 the previous constituent stream. (thanks to Tony Martinez)
2036 * fixed some bugs revealed by Paul Dietz' test suite:
2037 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2038 not just nonnegative fixnums;
2039 ** the logical bit-array operators such as BIT-AND now accept an
2040 explicit NIL for their "opt-arg" argument (to indicate a
2041 freshly-consed result bit-array);
2042 ** ELT now signals an error on an invalid sequence index in safe
2044 ** the type system is now cleverer about negations of numeric
2045 types, and consequently understands the BIGNUM and RATIO types
2047 ** the type system is now cleverer about the interaction between
2048 INTEGER and RATIO types: while bugs still remain, many more
2049 cases are accurately computed;
2050 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2051 if it is in the last clause;
2052 ** CONSTANTLY now correctly returns a side-effect-free function in
2054 ** DECLARE is no longer treated as a special-operator; in
2055 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2056 * incremented fasl file version number due to the change in the
2057 DEFSTRUCT-SLOT-DESCRIPTION structure.
2059 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2060 * minor incompatible change: code processed by the "interpreter" or
2061 EVAL now has a compilation optimization policy of (DEBUG 2)
2062 (changed from (DEBUG 1)) to improve debuggability of interactive
2063 development, and to allow the use of the debug RETURN command in
2065 * an experimental implementation of the RETURN command for the
2066 debugger has been included. (thanks to Frederik Kuivinen)
2067 * fixed bug 62: constraints were not propagated into a loop.
2068 * fixed bug in embedded calls of SORT (reported and investigated by
2070 * fixed some bugs revealed by Paul Dietz' test suite:
2071 ** printing and reading of arrays with some dimensions having
2072 length 0 (thanks to Gerd Moellmann);
2073 ** BOA constructor with &AUX argument without a default value does
2074 not cause a type error;
2075 ** CONSTANTP now returns true for all self-evaluating objects.
2077 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2078 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2079 accessors that are related by inheritance, as specified in the
2080 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2081 Valtteri Vuorikoski)
2082 * The compiler is now able to inline functions that were defined in
2083 a complex lexical environment (e.g. inside a MACROLET).
2084 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2086 * Support for the upcoming FreeBSD-5.0 release has been included.
2087 (thanks to Dag-Erling Smorgrav)
2088 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2089 effect when it is not in a toplevel context.
2090 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2091 stand a better chance of being correct. (thanks to Gerd
2093 * fixed bug in COERCE, which now signals an error on coercing a
2094 rational to a bounded real type which excludes the expected
2096 * The compiler is now able to derive types more accurately from the
2097 COERCE and COMPILE functions.
2098 * fixed bug 223: functional binding is considered to be constant
2099 only for symbols in the CL package.
2100 * fixed bug 231: SETQ did not check the type of a variable being set
2101 (reported by Robert E. Brown)
2102 * A new optimization for MAKE-INSTANCE has been included, fixing
2103 various bugs (including relating to :ALLOCATION :CLASS slots and
2104 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2106 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2107 ** As required by ANSI, LOOP now disallows anonymous collection
2108 clauses such as COLLECT I in conjunction with aggregate boolean
2109 clauses such as THEREIS (= I 1);
2110 ** LOOP now signals an error when any variable is reused in the
2111 same loop (including the potentially useful construct analogous
2112 to WITH A = 1 WITH A = (1+ A);
2113 ** IT is only a special loop symbol within the first clause of a
2114 conditional loop clause;
2115 ** LOOP with a typed iteration variable over a hashtable now
2116 signals a type error iff it should.
2117 * fixed some other bugs revealed by Paul Dietz' test suite:
2118 ** FILE-STREAM now names the class previously known as FD-STREAM;
2119 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2120 argument) no longer signals an error;
2121 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2122 of the slot symbol, rather than using the current package
2123 ((:CONC-NAME "") continues to intern the slot's name in the
2125 * incremented fasl file version number, because of the incompatible
2126 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2127 of the new implementation of DEFINE-COMPILER-MACRO.
2129 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2130 * Support for building SBCL for MIPS platforms running in
2131 little-endian mode has now been checked in, and basic
2132 functionality on said platforms verified.
2133 * minor incompatible change: PCL now records the pathname of a file
2134 in which methods and the like are defined, rather than its
2136 * minor incompatible change: TRUENAME now considers the truename of
2137 a file naming a directory to be the pathname with :DIRECTORY
2138 component indicating that directory.
2139 * minor incompatible change: a NAMED clause in the extended form of
2140 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2141 reason for the previous behaviour is unclear.
2142 * more systematization and improvement of CLOS and MOP conformance
2143 in PCL (thanks to Gerd Moellman and Pierre Mai):
2144 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2146 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2147 primary methods with no specializers;
2148 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2150 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2151 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2152 FORWARD-REFERENCED-CLASSes; error reporting on
2153 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2155 ** SXHASH on CLOS instances now uses a slot internal to the
2156 instance to return different numbers on distinct instances,
2157 while preserving the same return value through invocations of
2159 ** DEFMETHOD signals errors when methods with longer incongruent
2160 lambda lists are added to generic functions;
2161 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2162 CLASS, as specified in AMOP;
2163 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2164 on the order returned by the primary method for classes of
2165 class STANDARD-CLASS;
2166 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2167 * fixed some bugs shown by Paul Dietz' test suite:
2168 ** DOLIST puts its body in TAGBODY;
2169 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2171 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2172 value producing form;
2173 ** if more variables are given to PROGV than values, extra
2174 variables are bound and made to have no value;
2175 ** NSUBSTITUTE on list arguments gets the right answer with
2177 ** ELT signals an error of type TYPE-ERROR when the index argument
2178 is not a valid sequence index;
2179 ** LOOP signals (at macroexpansion time) an error of type
2180 PROGRAM-ERROR when duplicate variable names are found;
2181 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2182 ** FUNCALL of special-operators now cause an error of type
2184 ** PSETQ now works as required in the presence of side-effecting
2185 symbol-macro places;
2186 ** NCONC accepts any object as its last argument;
2187 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2189 ** loop-for-as-package does not require a package to be explicitely
2191 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2193 * fixed bug 166: compiler preserves "there is a way to go"
2194 invariant when deleting code.
2195 * fixed bug 172: macro lambda lists with required arguments after
2196 &REST arguments now cause an error to be signalled. (thanks to
2198 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2199 bug. (thanks to Matthew Danish)
2200 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2202 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2203 arguments are lexically rebound. (thanks to Gerd Moellmann and
2205 * fixed bug 194: error messages are now more informative when there
2206 is no primary method applicable in a call to a generic
2207 function. (thanks to Gerd Moellmann)
2208 * fixed bug in command line argument checking (thanks to Julian
2210 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2211 (thanks to Matthew Danish)
2212 * incremented fasl file version number, because of the
2213 SXHASH-related changes in the layout of CLOS data structures
2215 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2216 * minor incompatible change: The runtime (the Unix executable named
2217 "sbcl") is now much pickier about the .core files it will load.
2218 Essentially it now requires .core files to descend from the same
2219 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2220 as the runtime does. (The intent is to prevent the crashes which
2221 can occur, and which can even be reported as mysterious failures,
2222 when people patch the sources or change the build parameters
2223 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2224 sbcl and .core files.)
2225 * fixed bug: VALUES-LIST is no longer optimized away.
2226 * fixed bug 142: The FFI conversion of C string values to Lisp
2227 string values no longer conses excessively. (thanks to Nathan
2228 Froyd porting Raymond Toy's fix to CMU CL)
2229 * began to systematize and improve MOP conformance in PCL (thanks to
2230 Nathan Froyd, Gerd Moellman and Pierre Mai):
2231 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2233 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2234 ** FINALIZE-INHERITANCE is now called on class finalization;
2235 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2236 argument precedence order.
2237 * fixed bug 202: The compiler no longer fails on functions whose
2238 derived types contradict their declared type.
2239 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2240 so it can be non-toplevel.
2241 * The fasl file version number has changed (because of the new
2242 implementation of DEFMACRO).
2243 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2244 safe code, that any length requirement by their type-specifier
2245 argument is valid. The exceptions to this are described in bug
2247 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2248 functions now check the types of their inputs as required by ANSI.
2249 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2250 introduced symbol is DECLAREd to be SPECIAL.
2251 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2252 * fixed bug: :COUNT argument to sequence functions may be negative
2253 * fixed bug: body of DO-SYMBOLS may contain declarations
2254 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2255 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2256 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2257 symbol macro only once
2258 * fixed printing of call frame when argument list is unavailable
2259 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2260 * compiler no longer signals WARNING on unknown keyword
2263 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2264 * A beta-quality port to the mips architecture running Linux,
2265 based on the old CMUCL backend, has been made. It has been tested
2266 on a big-endian kernel, and works sufficiently well to be able to
2267 rebuild itself; it has not been tested in little-endian mode.
2268 * fixed an inconsistency between gencgc.c and purify.c which made
2269 dumping/loading .core files unreliable
2270 * fixed bug 120a: The compiler now deals correctly with IFs where
2271 the consequent is the same as the alternative, instead of
2272 misderiving the return type. (thanks to Alexey Dejneka)
2273 * fixed bug 113: Logical pathnames are now dumpable (the logical
2274 host is resolved at load-time, throwing an error if it is not
2276 * fixed bug 174: FORMAT's error message is slightly clearer when a
2277 non-printing character is used in a format directive.
2278 * fixed several bugs in compiler checking of type declarations, i.e.
2279 violations of the Python "declarations are assertions" principle
2280 (thanks to Alexey Dejneka)
2281 * fixed several bugs in PCL's error checking (thanks to Gerd
2283 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2285 * fixed bug in compilation of functions as first class values
2286 (thanks to Antonio Martinez-Shotton)
2287 * The compiler's handling TYPE-ERRORs which it can prove will
2288 inevitably happen at runtime has been cleaned up and corrected
2289 in several ways. (thanks to Alexey Dejneka)
2290 * improved argument type checking for various basic arithmetic
2291 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2292 lavished on them in the past that they can be compiled in many
2293 ways in different special cases
2294 * fixed bug 181: compiler checks validity of user supplied type
2296 * cleaned up code flushing in optimization: Function calls which
2297 should signal errors for safety purposes (e.g. which ANSI says
2298 should signal errors when their arguments are of incorrect type)
2299 are no longer optimized away.
2300 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2301 * incremented fasl file version number, because changes in the
2302 implementation of sequence functions like COERCE caused
2303 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2304 in old inline expansions) to become undefined. (Actually these
2305 changes were later undone, so we might very well be binary
2306 compatible with 0.7.7 after all, but leaving the version number
2307 incremented seemed like the simplest and most conservative
2310 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2311 * An alpha-quality port to the parisc architecture running Linux,
2312 based on the old CMUCL backend, has been made. This, even more so
2313 than the other backends, should be considered still a work in
2314 progress; known problems include that the Linux kernel in 64-bit
2315 mode does not propagate the correct sigcontext structure to
2316 userspace, and consequently SBCL on a parisc64 kernel will not
2318 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2319 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2320 suppressed.) Also now that the compiler is looking at declarations
2321 in the environment, it checks optimization declarations as well,
2322 and suppresses inlining when (> DEBUG SPEED).
2323 * More fixes have been made to treatment of floating point exception
2324 treatment and other Unix signals. In particular, floating point
2325 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2326 * The detection and handling of control stack exhaustion (infinite
2327 or very deeply nested recursion) has changed. Stack exhaustion
2328 detection is now done by write-protecting pages at the OS level
2329 and applies at all optimization settings; when found, a
2330 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2331 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2332 be caught using IGNORE-ERRORS.
2333 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2334 correctly when transforming recursive LABELS functions to LETs.
2335 (thanks to Alexey Dejneka)
2336 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2337 that are names of constants or global variables.
2338 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2339 alien routines with docstrings.
2340 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2341 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2343 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2344 (thanks to Eric Marsden)
2345 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2346 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2347 * Bug fix: The SPARC backend can now compile functions involving
2348 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2349 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2350 to a functions expecting a PATHNAME-DESIGNATOR.
2351 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2352 lambda lists. (thanks to Alexey Dejneka)
2353 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2354 functions so that EXPORTing the name of the class doesn't cause
2355 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2356 to Antonio Martinez for reporting this)
2357 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2358 constant-folded without failing an assertion. (thanks to Einar
2359 Floystad Dorum for reporting this)
2360 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2361 types are now dealt with more correctly by the compiler.
2362 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2363 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2364 behaviour analogous to RENAME-FILE. This puts its behaviour more
2365 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2367 * The fasl file version number has changed again. (because of the
2368 bug fix involving the names of PCL MAKE-INSTANCE functions)
2370 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2371 * bug fix: Floating point exceptions are treated much more
2372 consistently on the x86/Linux and PPC/Linux platforms.
2373 * Array initialization with :INITIAL-ELEMENT is now much faster for
2374 cases when the compiler cannot open code the array creation, but
2375 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2376 array accesses have also seen a speed increase.
2377 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2378 specified. (This was at the root of some bad interactions between
2379 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2381 * bug fix: Internal error arguments for undefined functions are now
2382 computed correctly on the PPC/Linux platform.
2383 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2384 Raymond Toy's patch for CMU CL)
2385 * Support for the Solaris 9 operating environment has been included
2386 (thanks to Daniel Merritt)
2387 * A very ugly but hopefully complete draft of the missing FFI chapter
2388 of the manual has been created by reformatting the corresponding
2389 CMU CL manual chapter into (currently very ugly and incoherent)
2390 DocBook and bringing it up to date for SBCL behavior. Thus, the
2391 manual is now essentially complete, at least by my extreme
2392 once-and-only-once standards, whereby it's acceptable to refer to
2393 the doc strings of SB-EXT functions as the primary documentation.
2394 * The fasl file version number has changed again, due to cleanup of
2395 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2396 is no longer a static symbol.)
2398 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2399 * SBCL now builds with OpenMCL (version 0.12) as the
2400 cross-compilation host; also, more progress has been made toward
2401 bootstrapping under CLISP.
2402 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2404 * bug 158 fixed: The compiler can now deal with integer loop
2405 increments different from 1; fixing this turned out also to fix
2407 * bug 169 fixed: no more bogus warnings about using lexical bindings
2408 despite the presence of perfectly good SPECIAL declarations (thanks
2409 to David Lichteblau)
2410 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2411 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2412 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2414 * bug 180 fixed: Method combination specifications no longer ignore
2415 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2416 * bug fix: Structure type predicate functions now check their argument
2417 count as they should.
2418 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2419 correctly. (thanks to Pierre Mai)
2420 * minor incompatible change: The --noprogrammer option is deprecated
2421 in favor of the new --disable-debugger option, which is very similar.
2422 (The major difference is that it takes effect at a slightly different
2423 time at startup, causing handling of errors in --sysinit and
2424 --userinit files will be affected differently.) The
2425 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2426 been added to allow this functionality to be controlled from ordinary
2427 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2428 maintainers, who might want to run non-interactive scripts to
2429 build SBCL cores which will later be used interactively.)
2430 * minor incompatible change: The LOAD function no longer, when given
2431 a wild pathname to load, loads all files matching that pathname.
2432 Instead, an error of type FILE-ERROR is signalled.
2434 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2435 * bug 147 fixed: The compiler preserves its block link/count
2436 invariants more correctly now so that it doesn't crash. (thanks
2438 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2440 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2441 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2442 no-value-for-this-character as NIL (as specified by ANSI).
2443 * HOST-NAMESTRING on physical pathnames now returns a string that is
2444 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2445 (thanks to Christophe Rhodes)
2446 * The Alpha port handles icache flushing more correctly. (thanks to
2448 * More progress has been made toward bootstrapping under CLISP. (thanks
2449 to Christophe Rhodes)
2450 * The fasl file format has changed again, because dynamic loading
2451 on OpenBSD (which has non-ELF object files) motivated some cleanups
2452 in the way that foreign symbols are transformed and passed around.
2453 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2454 is no longer treated as whitespace by the reader, but instead as
2455 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2456 |A
\7fB|, instead of A as it used to.
2458 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2459 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2460 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2461 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2462 this as of 0.7.1.45, but was left out of the previous news section
2463 (thanks to Dan Barlow)
2464 * SBCL now runs on the Solaris operating system on SPARC architectures
2465 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2466 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2467 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2468 * SPARC backend cleanups, allowing builds of cores optimized for V8
2469 and V9 SPARCS, and also emission of code targeted to a particular
2470 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2472 * SBCL is closer to bootstrapping under CLISP, thanks to various
2473 fixes by Christophe Rhodes.
2474 * The fasl file format has changed again, to allow the compiler's
2475 INFO database to support symbol macros.
2476 * The user manual (in doc/) is formatted into HTML more nicely.
2477 (thanks to coreythomas)
2478 * The system is smarter about SUBTYPEP relationships, especially
2479 those involving NOT types (including types such as ATOM which are
2480 represented internally using NOT types). Thus SUBTYPEP is less
2481 likely to return (VALUES NIL NIL) in general, and in particular
2482 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2484 * The fasl file format has changed again, because the internal
2485 representation of types now includes a new slot to support the new
2486 SUBTYPEP-of-NOT-types logic.
2487 * (not a change in the main branch of SBCL, but a related prototype
2488 which can hopefully be merged into the main branch of SBCL in the
2489 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2490 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2491 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2492 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2493 dispatch macro character combinations. (thanks to Alexey Dejneka)
2494 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2495 that superficially look like logical namestrings correctly.
2496 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2498 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2499 default supplied-p) for &optional and &key arguments. (thanks to
2502 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2503 * incompatible change: The compiler is now less aggressive about
2504 tail call optimization, doing it only when (> SPACE DEBUG) or
2505 (> SPEED DEBUG). (This is an incompatible change because there are
2506 programs which relied on the old CMU-CL-style behavior to optimize
2507 away their unbounded recursion which will now die of stack overflow.)
2508 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2509 for non-GENCGC systems has been increased to 20M (since that
2510 seems much closer to the likely performance optimum for modern
2511 systems than the old 4M value was)
2512 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2513 and *DEBUG-PRINT-LEVEL*
2514 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2515 of CMU CL's support for SPARC, and various endianness and other
2516 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2517 * new syntactic sugar for the Unix command line: --load foo.bar is now
2518 an alternate notation for --eval '(load "foo.bar")'.
2520 ** The system now detects stack overflow and handles it gracefully,
2521 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2522 optimization settings. (This is a good thing in general, and
2523 its introduction in this version should be particularly timely
2524 for anyone whose code fails because of suppression of tail
2526 ** The system now hunts for the C variable "environ" in a more
2527 devious way, to avoid segfaults when the C library version differs
2528 between compile time and run time. (thanks to Christophe Rhodes)
2529 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2530 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2531 ** The compiler no longer issues bogus style warnings for undefined
2532 classes in the same source file as the DEFCLASSes which defined
2533 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2535 ** fixes in CONDITION class precedence list for undefined function
2536 errors (thanks to Alexei Dejneka)
2537 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2538 correctly. (thanks to Dan Barlow)
2539 ** portability fixes aiming at bootstrapping under CLISP (thanks
2540 to Dave McDonald and Christophe Rhodes)
2541 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2542 ** fixes in type translation and and type inference (thanks to
2544 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2545 ** various fixes in the new ports (thanks to Dan Barlow)
2546 * several changes related to debugging:
2547 ** suppression of tail recursion, as noted above
2548 ** stack overflow detection, as noted above
2549 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2550 is now the default. (For some time encapsulation has been more
2551 reliable than the breakpoint-based :ENCAPSULATE NIL
2552 implementation, at least on X86 systems; and I just noticed that
2553 encapsulation also seems closer to the spirit of the ANSI
2556 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2558 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2559 up properly again. (There was a packaging bug in 0.7.0 which
2560 left their definitions in SB-SYS::LOAD-FOREIGN and
2561 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2562 vital for most things which interface to C-level interfaces,
2563 like extensions working with sockets or databases or
2564 Perl-compatible regexes or whatever, and the need to fix
2565 this bug is the main reason that 0.7.1 was released so
2567 ** DEFGENERIC is now choosier about the methods it redefines, so that
2568 reLOADing a previously-LOADed file containing DEFGENERICs does
2569 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2570 cycle now works as it should. (thanks to Alexey Dejneka)
2571 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2572 fixed by Christophe Rhodes. (He actually submitted this patch
2573 months ago, and I delayed until after 0.7.0.)
2574 ** Bug 111 (internal compiler confusion about runtime checks on
2575 FUNCTION types) was fixed by Alexey Dejneka.
2576 * Some internal cleanups (getting rid of variables which aren't
2577 needed now that the byte interpreter is gone) caused the fasl
2578 file format number to change again.
2580 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2581 * major incompatible change: The default fasl file extension, i.e. the
2582 default extension for files produced by COMPILE-FILE, has changed
2583 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2585 ** There are many changes in the implementation of the compiler.
2586 SBCL is now essentially a compiler-only implementation of ANSI
2587 Common Lisp. EVAL still "interprets" a few special cases, but
2588 almost all the interesting cases are handled by creating
2589 a LAMBDA expression, calling COMPILE on it, then calling
2590 FUNCALL on the result.
2591 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2592 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2593 Since the code is newer, there might still be some new bugs
2594 (though not as many as before Martin Atzmueller's fixes:-). But
2595 the new code is substantially simpler and clearer, and hopefully
2596 any remaining bugs will be simpler, less fundamental, and more
2597 fixable then the bugs in the old code.
2598 ** The revised compiler is still a little unsteady on its feet.
2600 *** The debugging information it produces (particularly the names
2601 of FUNCTION objects) is sometimes much less useful than what
2602 the old compiler produced.
2603 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2604 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2605 within a MACROLET) has been temporarily weakened.
2606 ** There are new compiler optimizations for various functions:
2607 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2608 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2609 *** the math functions TRUNCATE, FLOOR, and CEILING
2610 *** the function-of-all-trades COERCE
2611 Mostly these should be transparent, but there's one
2612 potentially-annoying problem (bug 117): when the compiler
2613 inline-expands a function and does type analysis on the result,
2614 it can create control paths which have type mismatches, and
2615 when it can't prove that those control paths aren't taken,
2616 it will issue WARNINGs about the type mismatches. This is
2617 a particular problem in practice for the new sequence functions.
2618 It's not clear how this should be fixed, and for now, a
2619 workaround is given in the entry for 117 in the BUGS file.
2620 ** (Because of the interaction between the two previous items --
2621 occasional inlining problems and new inline expansions -- some
2622 of the new sequence function optimizations won't really kick in
2623 completely until debugging information, and then inlining, are
2624 straightened out in some future version.)
2625 * minor incompatible changes:
2626 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2627 DIRECTORY no longer implicitly promotes NIL slots of its
2628 pathname argument to :WILD. In particular, when you ask for the
2629 contents of a directory (which you used to be able to do without
2630 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2631 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2632 ** changes in behavior that ANSI explicitly defines to be
2633 implementation dependent:
2634 *** The new compiler-only implementation still conforms with ANSI,
2635 but acts a little different than before. Besides the obvious
2636 changes in performance tradeoffs (that the cost per form passed
2637 to EVAL has gone up, and the cost per form executed by EVAL
2638 has gone down), the behavior of the system changes a little
2639 because there are no longer any interpreted function objects.
2640 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2641 e.g. doing COMPILE on the output of interactive DEFUN is
2643 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2645 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2646 has changed from (:CL) to NIL.
2647 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2648 e.g. #\Newline and #\Tab, don't have names specified in the
2649 ANSI Common Lisp standard, is now based on their ASCII symbolic
2650 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2651 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2652 are no longer used for output.
2653 ** changes in internal implementation constants:
2654 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2655 4 million. (If your application spends a lot of time GCing and
2656 you have a lot of RAM, you might want to experiment with
2657 increasing it even more.)
2658 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2659 However, almost all old code should still continue to work without
2660 immediate update, as SB-C-CALL is now a (deprecated) nickname
2662 ** Old operator names in the style DEF-FOO are now deprecated in
2663 favor of new corresponding names DEFINE-FOO, for consistency with
2664 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2665 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2666 internal symbols, but a few supported extensions like
2667 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2668 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2669 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2670 etc. as you get deeper into recursive calls to the debugger
2671 command loop, instead of the old "5]", "5]]", "5]]]"
2672 sequence. (I was motivated to do this when squabbles between
2673 ILISP and SBCL left me very deeply nested in the debugger. In the
2674 short term, this change will probably provoke more ILISP/SBCL
2675 squabbles, but hopefully it will be an improvement in the long run.)
2676 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2677 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2678 function, since declaiming return types involving aliens is
2679 (1) annoyingly messy to do by hand and (2) vital to efficient
2680 compilation of code which calls such functions.
2681 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2682 longer reexported by the SB-EXT package. They're solely useful
2683 for alien code, so it seems more logical that you should get
2684 them from the SB-ALIEN package, not in SB-EXT.
2685 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2686 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2687 features. Instead, the code that they used to control is always
2688 built into the system.
2689 * many other bug fixes
2690 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2691 advantage of the new EVAL-WHEN stuff and to clean them up in
2692 general, and they are now more ANSI-compliant in a number of
2693 ways. Martin Atzmueller is responsible for a lot of this.
2694 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2696 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2697 *** correct ERROR type for various file operations
2698 *** some fixes for Lisp streams
2699 *** DEFMETHOD syntax checking
2700 *** changing old weird representation of debug information as
2701 strings (which, among their other deficiencies, don't transform
2702 correctly when you rename packages, and don't change their
2703 print representation when you change things like *PACKAGE*
2704 and *PRINT-LENGTH*) to symbols and lists of symbols
2705 He also made several improvements and fixed several bugs in DESCRIBE.
2706 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2708 *** misbehavior of WRITE-STRING/WRITE-LINE
2709 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2710 and several other LOOP problems as well
2711 *** DIRECTORY when similar filenames are present
2712 *** DEFGENERIC with :METHOD options
2713 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2714 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2715 *** argument ordering in FIND with :TEST option
2716 *** mishandled package designator argument in APROPOS-LIST
2717 *** various problems in the backquote readmacro
2718 *** a bug in APROPOS
2719 *** probably some others that I'm not describing very well here,
2720 since the CVS log documents them by reference to sbcl-devel
2721 messages, and the SourceForge archives aren't working well.:-(
2722 ** Dan Barlow improved the Alpha port (and is making progress on the
2723 PPC port, for those of you who think different).
2724 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2725 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2726 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2727 continues to work on the SPARC port (for those of you in a position
2728 to look down upon our little PC-compatible boxes from a great height).
2729 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2730 and uses that copy, rather than the current dynamic value, when
2731 it's trying to decide whether to truncate output. Thus e.g.
2732 (let ((*print-lines* 50))
2733 (pprint-logical-block (stream nil)
2735 (let ((*print-lines* 8))
2736 (print (aref possiblybigthings i) stream)))))
2737 should now truncate the logical block only at 50 lines, instead of
2738 often truncating it at 8 lines, as it did before.
2739 * The doc/cmucl/ directory, containing old CMU CL documentation
2740 from the time of the fork, is no longer part of the base system.
2741 SourceForge has shut down its anonymous FTP service, and with it
2742 my original plan for distributing the old CMU CL documentation
2743 there. For now, if you need these files you can download an old
2744 SBCL source release and extract them from it.
2745 * The fasl file version number changed again, for dozens of reasons,
2746 some of which are apparent above.
2748 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2749 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2750 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2751 patch, so that DISASSEMBLE output is much nicer.
2752 * The code in the SB-PROFILE package now seems reasonably stable.
2753 I still haven't decided what the final interface should look like
2754 (I'd like PROFILE to interact cleanly with TRACE, since both
2755 facilities use function encapsulation) but if you have a need
2756 for profiling now, you can probably use it successfully with
2757 the current CMU-CL-style interface.
2758 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2759 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2760 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2761 link now returns the dangling link itself, and for similar
2762 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2763 link itself. (In these cases the old code signalled an error and
2764 looped endlessly, respectively.) Thus, DIRECTORY now works even
2765 in the presence of dangling and cyclic symbolic links.
2766 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2767 is now a supported extension again, since the consensus on
2768 sbcl-devel was that it can be useful for ordinary development
2769 work, not just for debugging SBCL itself.
2770 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2771 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2772 that currently-defined functions might be redefined later with
2773 different return types.
2774 * Hash tables can be printed readably, as inspired by CMU CL code
2775 of Eric Marsden and SBCL code of Martin Atzmueller.
2776 * better error handling in CLOS method combination, thanks to
2777 Martin Atzmueller porting Pierre Mai's CMU CL patches
2778 * more overflow fixes for >16Mbyte I/O buffers
2779 * A bug in READ has been fixed, so that now a single Ctrl-D
2780 character suffices to cause end-of-file on character streams.
2781 In particular, now you only need one Ctrl-D at the command
2782 line (not two) to exit SBCL.
2783 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2785 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2786 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2787 does the right thing.
2788 * The implementation of some type tests, especially for CONDITION
2789 types, is now tidier and maybe faster, due to CMU CL code
2790 originally by Douglas Crosher, ported by Martin Atzmueller.
2791 * Some math functions have been fixed, and there are new
2792 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2793 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2794 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2795 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2796 likely to be built into sbcl-0.7.0.)
2797 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2798 CL, ported to SBCL by Martin Atzmueller)
2799 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2800 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2801 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2802 * There's a new slam.sh hack to shorten the edit/compile/debug
2803 cycle for low-level changes to SBCL itself, and a new
2804 :SB-AFTER-XC-CORE target feature to control the generation of
2805 the after-xc.core file needed by slam.sh.
2806 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2807 COMPILE-FILE is no longer supported, so that now every function
2808 gets an entry point, so that block compilation looks a little
2809 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2810 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2811 returns the number of bytes consed since the system started,
2812 rather than the number consed since the first time the function
2813 was called. (The new definition parallels ANSI functions like
2814 CL:GET-INTERNAL-RUN-TIME.)
2815 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2816 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2817 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2818 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2819 * Fasl file version numbers are now independent of the target CPU,
2820 since historically most system changes which required version
2821 number changes have affected all CPUs equally. Similarly,
2822 the byte fasl file version is now equal to the ordinary
2825 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2826 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2827 is no longer recognized. I apologize for this, because it was
2828 listed in SB-EXT as a supported extension, but I found that
2829 its existing behavior was poorly specified, as well as incorrectly
2830 specified, and it looked like too much of a mess to straighten it
2831 out. I have enough on my hands trying to get ANSI stuff to work..
2832 * many patches ported from CMU CL by Martin Atzmueller, with
2833 half a dozen bug fixes in pretty-printing and the debugger, and
2834 half a dozen others elsewhere
2835 * fixed bug 13: Floating point infinities are now supported again.
2836 They might still be a little bit flaky, but thanks to bug reports
2837 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2838 as flaky as they were.
2839 * The --noprogrammer command line option is now supported. (Its
2840 behavior is slightly different in detail from what the old man
2841 page claimed it would do, but it's still appropriate under the
2842 same circumstances that the man page talks about.)
2843 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2844 are now supported, and enabled by default. Thus, the compiler can
2845 handle many floating point and complex operations much less
2846 inefficiently. (Thus e.g. you can implement a complex FFT
2848 * The compiler now detects type mismatches between DECLAIM FTYPE
2849 and DEFUN better, and implements CHECK-TYPE more correctly, and
2850 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2851 thanks to patches from Martin Atzmueller.
2852 * various fixes to make the cross-compiler more portable to
2853 ANSI-conforming-but-different cross-compilation hosts (notably
2854 Lispworks for Windows, following bug reports from Arthur Lemmens)
2855 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2856 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2857 fixed thanks to Pierre Mai's CMU CL patches.
2858 * fixes to keep the system from overflowing internal counters when
2859 it tries to use i/o buffers larger than 16M bytes
2860 * fixed bug 45a: Various internal functions required to support
2861 complex special functions have been merged from CMU CL sources.
2862 (When I was first setting up SBCL, I misunderstood a compile-time
2863 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2864 * improved support for type intersection and union, fixing bug 12
2865 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2866 more obscure bugs as well
2867 * some steps toward byte-compiling non-performance-critical
2868 parts of the system, courtesy of patches from Martin Atzmueller
2869 * Christophe Rhodes has made some debian packages of sbcl at
2870 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2871 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2872 stable, but are nonetheless usable. When he's ready, I'd be happy
2873 to add them to the SourceForge "File Releases" section. (And if
2874 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2875 * new fasl file format version number (because of changes in
2876 internal representation of (OR ..) types to accommodate the new
2877 support for (AND ..) types, among other things)
2879 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2880 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2882 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2884 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2885 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2886 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2887 * DESCRIBE now works on structure objects again.
2888 * Most function call argument type mismatches are now handled as
2889 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2890 know whether the function will be redefined before the call is
2891 executed. (The compiler could flag local calls with full WARNINGs,
2892 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2893 it doesn't keep track of enough information to know whether calls
2894 are local in this sense.)
2895 * Compiler output is now more verbose, with messages truncated
2896 later than before. (There should be some supported way for users
2897 to override the default verbosity, but I haven't decided how to
2898 provide it yet, so this behavior is still controlled by the internal
2899 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2900 src/compiler/ir1util.lisp.)
2901 * Fasl file format version numbers have increased again, because
2902 support for the Gray streams extension changes the layout of the
2903 system's STREAM objects.
2904 * The Gray subclassable streams extension now works, thanks to a
2905 patch from Martin Atzmueller.
2906 * The full LOAD-FOREIGN extension (not just the primitive
2907 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2908 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2909 but like most other programs, it defaults to copying the Unix
2910 environment from the original process instead of starting the
2911 new process in an empty environment.
2912 * Extensions which manipulate the Unix environment now support
2913 an :ENVIRONMENT keyword option which doesn't smash case or
2914 do other bad things. The CMU-CL-style :ENV option is retained
2915 for porting convenience.
2916 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2917 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2919 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2921 * A patch from Martin Atzmueller seems to have solved the SIGINT
2922 problem, and as far as we know, signal-handling now works cleanly.
2923 (If you find any new bugs, please report them!)
2924 * The system no longer defaults Lisp source file names to types
2925 ".l", ".cl", or ".lsp", but only to ".lisp".
2926 * The compiler no longer uses special default file extensions for
2927 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2928 seems to expect a single default extension for all compiled code,
2929 and there's no compelling reason to try to stretch the standard
2930 to allow two different extensions.) Instead, byte-compiled files
2931 default to the same extension as native-compiled files.
2932 * Fasl file format version numbers have increased again, because
2933 a rearrangement of internal implementation packages made some
2934 dumped symbols in old fasl files unreadable in new cores.
2935 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2936 many fewer weird special cases.
2937 * Bug #17 (differing COMPILE-FILE behavior between logical and
2938 physical pathnames) has been fixed, and some related misbehavior too,
2939 thanks to a patch from Martin Atzmueller.
2940 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2941 by Tim Moore, ported to SBCL by Martin Atzmueller.
2942 * Martin Atzmueller fixed several filesystem-related problems,
2943 including bug #36, in part by porting CMU CL patches, which were
2944 written in part by Paul Werkowski.
2945 * More compiler warnings in src/runtime/ are gone, thanks to
2946 more patches from Martin Atzmueller.
2947 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2950 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2952 * DESCRIBE now works on CONDITION objects.
2953 * The debugger now handles errors which arise when trying to print
2954 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2956 * The build system now uses an additional file, customize-target-features.lisp,
2957 to allow local modifications to the target *FEATURES* list. (The point of
2958 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2959 debugging features enabled, without having to worry about propagating it
2960 into everyone's system when I do a "cvs update".) When no
2961 customize-target-features.lisp file exists, the target *FEATURES* list
2962 should be constructed the same way as before.
2963 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2964 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2965 warn about behavior which is undefined under the ANSI spec. Note: This
2966 is specified by ANSI, but it's not very popular with programmers.
2967 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2968 macro in the SBCL sources for an example of a workaround which you
2969 might use to make portable ANSI-standard code which does what you want.
2970 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2971 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2972 when it's used as a non-toplevel form. (This is required in order
2973 to implement the DEFCONSTANT-EQX macro.)
2974 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2975 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2976 funny things, due to bugs in the implementation of EVAL-WHEN
2977 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2978 non-toplevel DEFCONSTANTs are uncommon.)
2979 * The core file version number and fasl file version number have been
2980 incremented, because the old noncompliant DEFCONSTANT behavior involved
2981 calling functions which no longer exist, and because I also took the
2982 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2983 * fixed bug 1 (error handling before read-eval-print loop starts), and
2984 redid debugger restarts and related debugger commands somewhat while
2986 ** The QUIT debugger command is gone, since it did something
2987 rather different than the SB-EXT:QUIT command, and since it never
2988 worked properly outside the main toplevel read/eval/print loop.
2989 Invoking the new TOPLEVEL restart provides the same functionality.
2990 ** The GO debugger command is also gone, since you can just invoke
2991 the CONTINUE restart directly instead.
2992 ** The TOP debugger command is also gone, since it's redundant with the
2993 FRAME 0 command, and since it interfered with abbreviations for the
2995 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2997 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2998 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2999 some porting work by Martin Atzmueller)
3000 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3001 with a boatload of patches which he ported to SBCL. Now that those
3003 ** The system tries to make sure that its low-priority messages
3004 are prefixed by semicolons, to help people who like to use
3005 syntax highlighting in their ILISP buffer. (This patch
3006 was originally due to Raymond Toy.)
3007 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3008 patches originally written by Raymond Toy.
3009 ** The compiler understands coercion between single-value and
3010 multiple-VALUES type expressions better, getting rid of some very
3011 weird behavior, thanks to patches originally by Robert MacLachlan
3012 and Douglas Crosher.
3013 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3014 lambda lists, thanks to a patch originally by Pierre Mai.
3015 ** The system no longer bogusly warns about "abbreviated type
3017 ** The compiler gets less confused by inlining and RETURN-FROM,
3018 thanks to some patches originally by Tim Moore.
3019 ** The system no longer hangs when dumping circular lists to fasl
3020 files, thanks to a patch originally from Douglas Crosher.
3021 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3022 undefined function error.
3023 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3024 in structure slot initforms) for now, documented workaround instead:-|
3025 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3026 * fixed bug 5: added stubs for various Gray stream functions called
3027 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3028 installed, at least appropriate type errors are generated
3029 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3030 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3031 consistently in DEFMETHOD forms.
3032 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3033 it doesn't seem to affect SBCL after all
3034 * The C runtime system now builds with better optimization and many
3035 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3037 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3039 * The system is now under CVS at SourceForge (instead of the
3040 CVS repository on my home machine).
3041 * The new signal handling code has been tweaked to treat register
3042 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3043 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3044 downstream, e.g. in debug-int.lisp, has implicit dependencies
3045 on the unsignedness of integer representation of machine words,
3046 and that caused the system to bomb out with infinite regress
3047 when trying to recover from type errors involving signed values,
3048 e.g. (BUTLAST '(1 2 3) -1).)
3049 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3050 (This was one of the bugs Peter Van Eynde reported back in July.)
3051 * The system now uses code inspired by Colin Walters' O(N)
3052 implementation of MAP (from the cmucl-imp@cons.org mailing
3053 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3054 inline the MAP operation, and there is more than one
3055 sequence argument to the MAP call (so that it can't just
3056 do ETYPECASE once and for all based on the type of the
3057 single sequence argument). (The old non-inline implementation
3058 of the general M-argument sequence-of-length-N case required
3059 O(M*N*N) time when any of the sequence arguments were LISTs.)
3060 * The QUIT :UNIX-CODE keyword argument has been renamed to
3061 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3062 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3064 * Raymond Wiker's patches to port dynamic loading from Linux to
3065 FreeBSD have been added.
3066 * The BUGS file is now more nearly up to date, thanks in large part
3067 to Martin Atzmueller's review of it.
3068 * The debugger now flushes standard output streams before it begins
3069 its output ("debugger invoked" and so forth).
3070 * The core version number and fasl file version number have both
3071 been incremented, because of incompatible changes in the layout
3073 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3074 used to not be called for a saved Lisp image.)
3075 * Martin Atzmueller's version of a patch to fix a compiler crash,
3076 as posted on sbcl-devel 13 September 2000, has been installed.
3077 * Instead of installing Martin Atzmueller's patch for the
3078 compiler transform for SUBSEQ, I deleted the compiler transform,
3079 and transforms for some similar consing operations.
3080 * A bug in signal handling which kept TRACE from working on OpenBSD
3082 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3083 away by constant folding
3084 * The system now defines its address space constants in one place
3085 (in the Lisp sources), and propagates them automatically elsewhere
3086 (through GENESIS and the sbcl.h file). Therefore, patching the
3087 address map is less unnecessarily tedious and error-prone. The
3088 Lisp names of address space constants have also been systematized.
3089 * CVS tags like dollar-Header-dollar have been removed from
3090 the sources, because they have never saved me trouble and
3091 they've been source of trouble working with patches and other
3092 diff-related operations.
3093 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3094 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3096 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3098 * The system has been ported to OpenBSD.
3099 * The system now compiles with a simple "sh make.sh" on the systems
3100 that it's supported on. I.e., now you no longer need to tweak
3101 text in the target-features.lisp-expr and symlinks in src/runtime/
3102 by hand, the make.sh takes care of it for you.
3103 * The system is no longer so grossly inefficient when compiling code
3104 involving vectors implemented as general (not simple) vectors (VECTOR T),
3105 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3106 which dares to use the various sequence functions on non-simple
3107 vectors, takes less of a performance hit.
3108 * There is now a primitive type predicate VECTOR-T-P
3109 to test for the (VECTOR T) type, so that e.g.
3110 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3111 can now be compiled with some semblance of efficiency. (The old code
3112 turned the type declaration into a full call to %TYPEP at runtime!)
3113 * AREF on (VECTOR T) is still not fast, since it's still compiled
3114 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3115 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3116 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3117 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3118 without making full calls to SUBTYPEP at runtime.
3119 (Some analogous efficiency issues for non-simple vectors specialized to
3120 element types other than T, or for non-simple multidimensional arrays,
3121 have not been addressed. They could almost certainly be handled the
3122 same way if anyone is motivated to do so.)
3123 * The changes in array handling break binary compatibility, so
3124 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3125 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3126 instead of (VALUES T T).
3127 * By following the instructions that Dan Barlow posted to sbcl-devel
3128 on 2 July 2000, I was able to enable primitive dynamic object
3129 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3130 functionality is not implemented (since it calls ld to resolve
3131 library references automatically, requiring RUN-PROGRAM for its
3132 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3133 try to resolve library references) is now supported.
3134 * The system now flushes the standard output streams when it terminates,
3135 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3136 them at several other probably-convenient times, e.g. in each pass of
3137 the toplevel read-eval-print loop, and after evaluating a form given
3138 as an "--eval" command-line option. (These changes were motivated by a
3139 discussion of stream flushing issues on cmucl-imp in August 2000.)
3140 * The source transform for TYPEP of array types no longer assumes
3141 that an array whose element type is a not-yet-defined type
3142 is implemented as an array of T, but instead punts, so that the
3143 type will be interpreted at runtime.
3144 * There is now some support for cross-compiling in make.sh: each of
3145 the phases of make.sh has its own script. (This should be transparent
3146 to people doing ordinary, non-cross-compile builds.)
3147 * Since my laptop doesn't have hundreds of megabytes of memory like
3148 my desktop machine, I became more motivated to do some items on
3149 my to-do list in order to reduce the size of the system a little:
3150 ** Arrange for various needed-only-at-cold-init things to be
3151 uninterned after cold init. To support this, those things have
3152 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3153 symbols with such names are now uninterned after cold init).
3154 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3155 fasl files for cold load.
3156 ** Remove the old compiler structure pooling code (which used to
3157 be conditional on the target feature :SB-ALLOC) completely.
3158 ** Redo the representation of some data in cold init to be more compact.
3159 (I also looked into supporting byte compiled code at bootstrap time,
3160 which would probably reduce the size of the system a lot, but that
3161 looked too complicated, so I punted for now.)
3162 * The maximum signal nesting depth in the src/runtime/ support code has
3163 been reduced from 4096 to 256. (I don't know any reason for the very
3164 large old value. If the new smaller value turns out to break something,
3165 I'll probably just bump it back up.)
3166 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3168 * Many, many bugs reported by Peter Van Eynde have been added to
3169 the BUGS list; some have even been fixed.
3170 * While enabling dynamic object file loading, I tried to make the
3171 code easier to understand, renaming various functions and variables
3172 with less ambiguous names, and changing some function calling
3173 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3174 * While trying to figure out how to do the OpenBSD port, I tried to
3175 clean up some of the code in src/runtime/. In particular, I dropped
3176 support for non-POSIX signal handling, added various comments,
3177 tweaked the code to reduce the number of compilation warnings, and
3178 renamed some files to increase consistency.
3179 * To support the new automatic configuration functionality in make.sh,
3180 the source file target-features.lisp-expr has been replaced with the
3181 source file base-target-features.lisp-expr and the machine-generated
3182 file local-target-features.lisp-expr.
3183 * fixed a stupid quoting error in make.sh so that using CMU CL
3184 "lisp -batch" as cross-compilation host works again
3186 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3188 * DESCRIBE no longer tries to call itself recursively to describe
3189 bound/fbound values, so that it no longer fails on symbols which are
3190 bound to themselves (like keywords, T, and NIL).
3191 * DESCRIBE now works on generic functions.
3192 * The printer now prints less-screwed-up representations of closures
3193 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3194 * A private symbol is used instead of the :EMPTY keyword previously
3195 used to mark empty slots in hash tables. Thus
3196 (DEFVAR *HT* (MAKE-HASH-TABLE))
3197 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3198 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3199 now does what ANSI says that it should. (You can still get
3200 similar noncompliant behavior if bang on the hash table
3201 implementation with all the symbols you get back from
3202 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3203 This breaks binary compatibility, since tests for equality to
3204 :EMPTY are wired into things like the macroexpansion of
3205 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3207 * There's now a minimal placeholder implementation for CL:STEP,
3208 as required by ANSI.
3209 * An obscure bug in the interaction of the normal compiler, the byte
3210 compiler, inlining, and structure predicates has been patched
3211 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3212 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3214 * Missing ordinary arguments in a macro call are now detected even
3215 when the macro lambda list contains &KEY or &REST.
3216 * The debugger no longer complains about encountering the top of the
3217 stack when you type "FRAME 0" to explicitly instruct it to go to
3218 the top of the stack. And it now prints the frame you request even
3219 if it's the current frame (instead of saying "You are here.").
3220 * As specified by ANSI, the system now always prints keywords
3221 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3223 * The default initial SIZE of HASH-TABLEs is now smaller.
3224 * Type information from CLOS class dispatch is now propagated
3225 into DEFMETHOD bodies, so that e.g.
3226 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3228 is now basically equivalent to
3229 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3230 (DECLARE (TYPE SINGLE-FLOAT X))
3232 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3233 operation, without having to do run-time type dispatch.
3234 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3235 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3236 * Since I don't seem to be making big file reorganizations very often
3237 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3238 is overflowing my ability to conveniently back them up), I've finally
3239 checked the system into CVS. (The CVS repository is on my home system,
3240 not at SourceForge -- putting it on SourceForge might come later.)
3241 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3242 high-level GC-NOTIFY-FOO functions send their output. (There's
3243 still very little control of where low-level verbose GC functions
3244 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3245 less than it used to -- the GC-NOTIFY-FOO functions are now under
3246 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3247 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3248 in only one place in the source code, and propagates it automatically
3249 everywhere that it's needed. Thus e.g. when I bump the version from
3250 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3251 * The C source files now include boilerplate legalese and documentation
3252 at the head of each file (just as the Lisp source files already did).
3253 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3254 to his page will be replaced with a link to his new CLiki service.
3256 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3258 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3259 * The build process now looks for GNU make under the default name "gmake",
3260 instead of "make" as it used to. If GNU make is not available as "gmake"
3261 on your system, you can change this default behavior by setting the
3262 GNUMAKE environment variable.
3263 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3264 can build without error under CMU CL.
3266 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3268 * There is now a partial SBCL user manual (with some new text and some
3269 text cribbed from the CMU CL manual).
3270 * The beginnings of a profiler have been added (starting with the
3271 CMU CL profiler and simplifying and cleaning up). Eventually the
3272 main interface should be through the TRACE macro, but for now,
3273 it's still accessed through vaguely CMU-CL-style functions and macros
3274 exported from the package SB-PROFILE.
3275 * Some problems left over from porting CMU CL to the new
3276 cross-compilation bootstrap process have been cleaned up:
3277 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3278 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3279 part when getting rid of the compiler *BACKEND* stuff.)
3280 ** The value of *NULL-TYPE* was screwed up, because it was
3281 being initialized before the type system knew the final
3282 definition of the 'NULL type. This screwed up several key
3283 optimizations in the compiler, causing inefficiency in all sorts
3284 of places. (I found it because I wanted to understand why
3285 GET-INTERNAL-RUN-TIME was consing.)
3286 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3287 PROCLAIM FTYPE information. Unfortunately this broke binary
3288 compatibility again, since now the forms output by DEFGENERIC
3289 to refer to functions which didn't exist in 0.6.3.
3290 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3291 can use the new (as of 0.6.3) transform for SOME into MAP into
3293 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3294 values to (INTEGER 0 1000000), so that the time code will no longer
3295 occasionally get blown up by Linux returning 1000000 microseconds
3296 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3297 its output conform to the ANSI spec. (Alas, this makes its output
3298 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3299 * A full call to MAP NIL with a single sequence argument no longer conses.
3300 * fixes to problems pointed out by Martin Atzmueller:
3301 * The manual page no longer talks about multiprocessing as though
3302 it were currently supported.
3303 * The ILISP support patches have been removed from the distribution,
3304 because as of version 5.10.1, ILISP now supports SBCL without us
3305 having to maintain patches.
3306 * added a modified version of Raymond Toy's recent CMU CL patch for
3307 EQUALP comparison of HASH-TABLE
3309 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3311 * The system still can't cross-compile itself with
3312 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3313 entails), but at least it can compile more of itself that way
3314 than it used to be able to, and various buglets which were uncovered
3315 by trying to cross-compile itself that way have now been fixed.
3316 * This release breaks binary compatibility again. This time
3317 at least I've incremented the FASL file format version to 2, so that the
3318 problem can be detected reliably instead of just causing weird errors.
3319 * various new style warnings:
3320 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3321 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3322 ** using the lexical binding of a variable named in the *FOO* style
3323 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3324 as specified by ANSI.
3325 * *RANDOM-STATE* is no longer automatically initialized from
3326 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3327 default behavior of the system is to repeat its behavior every time
3328 it's run. If you'd like to change this behavior, you can always
3329 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3330 old convention there was no comparably easy way to get the system to
3331 repeat its behavior every time it was run.
3332 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3333 FTYPE declarations has been removed, in favor of their ANSI
3334 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3335 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3336 the types of their sequence arguments can be determined at compile time.
3337 This is done through a new open code expansion for MAP which eliminates
3338 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3339 argument types can be determined at compile time.
3340 * The optimizer now transforms COERCE into an identity operation when it
3341 can prove that the coerced object is already of the correct type. (This
3342 can be a win for machine generated code, including the output of other
3343 optimization transforms, such as the MAP transform above.)
3344 * Credit information has been moved from source file headers into CREDITS.
3345 * Source file headers have been made more standard.
3346 * The CASE macro now compiles without complaining even when it has
3349 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3351 * (Note that the way that the PCL macroexpansions were rewritten
3352 to accommodate the change in DEFGENERIC below breaks binary
3353 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3354 not run under sbcl-0.6.2. Once we get out of alpha releases,
3355 i.e. hit release 1.0.0, we'll probably try to maintain binary
3356 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3357 and sbcl-1.4.4. Until then, however, it might be fairly common
3358 for maintenance releases to break binary compatibility.)
3359 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3361 * The reporting of unhandled signals has been changed to print some
3362 explanatory text as well as the report form. (Previously only
3363 the report form was printed.)
3364 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3365 it defines, so that the compiler no longer issues undefined function
3366 warnings for compiled-but-not-yet-loaded generic functions.
3367 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3368 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3369 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3370 section of the ANSI spec are supported.
3371 * The "" nickname for the "KEYWORD" package has been removed.
3372 The reader still handles symbol tokens which begin with a package marker
3373 as keywords, but it doesn't expose its mechanism for doing so in the
3374 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3375 * The system now issues STYLE-WARNINGs for contradictory TYPE
3376 proclamations. (Warnings for contradictory FTYPE proclamations would
3377 be nice too, but those can't be done usefully unless the type system
3378 is made smarter about FUNCTION types.)
3379 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3380 systematized, so that "*target-*.lisp is supposed to exist only on the
3381 target and imply that there's a related file which exists on the
3382 host, and *host-*.lisp is supposed to exist only on the host and imply
3383 that there's a related file which exists on the target. This involves a
3384 lot of renaming. Hopefully the acute confusion caused by the renaming
3385 will be justified by the reduction in chronic confusion..
3386 ** runtime-type.lisp -> early-target-type.lisp
3387 ** target-type.lisp -> late-target-type.lisp
3388 ** early-host-format.lisp -> early-format.lisp
3389 ** late-host-format.lisp -> late-format.lisp
3390 ** host-error.lisp -> misc-error.lisp
3391 ** early-error.lisp -> early-target-error.lisp
3392 ** late-error.lisp -> late-target-error.lisp
3393 ** host-defboot.lisp -> early-defboot.lisp
3394 ** code/misc.lisp -> code/target-misc.lisp
3395 ** code/host-misc.lisp -> code/misc.lisp
3396 ** code/numbers.lisp -> code/target-numbers.lisp
3397 ** code/early-numbers.lisp -> numbers.lisp
3398 ** early-host-type.lisp -> early-type.lisp
3399 ** late-host-type.lisp -> late-type.lisp
3400 ** host-typep.lisp -> typep.lisp
3401 ** load.lisp -> target-load.lisp
3402 ** host-load.lisp -> load.lisp
3403 ** host-disassem.lisp -> disassem.lisp
3404 ** host-insts.lisp -> insts.lisp
3405 ** byte-comp.lisp -> target-byte-comp.lisp
3406 ** host-byte-comp.lisp -> byte-comp.lisp
3407 ** host-signal.lisp -> signal.lisp
3408 ** host-defstruct.lisp -> defstruct.lisp
3409 ** late-target-type.lisp -> deftypes-for-target.lisp
3410 Furthermore, several other previously target-only files foo.lisp (e.g.
3411 hash-table.lisp and random.lisp) have been split into a target-and-host
3412 foo.lisp file and a target-only target-foo.lisp file, with their key type
3413 definitions in the target-and-host part, so that the cross-compiler will
3414 know more about target types.
3415 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3416 gone away. In their place are various *BACKEND-FOO* variables
3417 corresponding to the slots of the old structure.
3418 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3419 into the target SBCL has been fixed.
3420 * The chill.lisp system for loading cold code into a running SBCL
3422 * Support for the CMU CL "scavenger hook" extension has been removed.
3423 (It was undocumented and unused in the CMU CL sources that SBCL was
3424 derived from, and stale in sbcl-0.6.1.)
3425 * Various errors in the cross-compiler type system were detected
3426 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3427 (enabling various consistency checks). Many of them were fixed,
3428 but some hard problems remain, so the compiler is back to
3429 running without *TYPE-SYSTEM-INITIALIZED* for now.
3430 * As part of the cross-compiler type system cleanup, I implemented
3431 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3432 * I have started adding UNCROSS calls throughout the type system
3433 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3434 on cross-compiler input files will be able to go away, and various
3436 * CONSTANTP now returns true for quoted forms (as explicitly required
3439 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3441 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3442 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3443 (MAKE-LIST -1). In the longer term, it ought to become true
3444 that declarations are assertions even at SAFETY 1. For now, it's not
3445 quite true even at SAFETY 3, but it's at least more nearly true..
3446 (Note that this change seems to increases the size of the system by
3447 O(5%) and to decrease the speed of the compiler by 20% or more.)
3448 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3449 for the problem of printing dozens of lines of distracting information
3450 about low-level system machinery as part of the top stack frame
3451 on entry to the debugger when an undefined function was called.
3452 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3453 is not reset to COMMON-LISP-USER.
3454 * Compilation of stuff related to dyncount.lisp has been made conditional
3455 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3456 smaller. The various dyncount-related symbols have been moved into
3457 a new "SB-DYNCOUNT" package.
3458 * tty-inspect.lisp has been renamed to inspect.lisp.
3459 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3460 feature has gone away. (When we eventually port to other flavors of
3461 libc and/or Unix, we'll try to make the differences between flavors
3462 invisible at the user level.)
3463 * Various other *FEATURES* tags, and/or their associated conditionals,
3464 have been removed if obsolescent, or given better documentation, or
3465 sometimes given more-mnemonic names.
3467 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3469 * tidied up "make.sh" script
3470 * tidied up system directory structure
3471 * better "clean.sh" behavior
3472 * added doc/FOR-CMUCL-DEVELOPERS
3473 * many many small tweaks to output format, e.g. removing possibly-confusing
3474 trailing #\. character in DESCRIBE-INSTANCE
3475 * (EQUALP #\A 'A) no longer signals an error.
3476 * new hashing code, including EQUALP hashing
3477 * tidied up Lisp initialization and toplevel
3478 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3479 * command line argument processing
3480 * added POSIX-GETENV function to deal with Unix-ish environment variables
3481 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3482 terminating SBCL on EOF
3483 * non-verbose GC by default
3484 * There is no more "sbcl" shell script; the sbcl file is now the C
3485 runtime executable (just like CMU CL).
3486 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3488 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3489 symbol and package information as Lisp native symbol and package objects
3490 instead of strings naming symbols and strings naming packages. This way,
3491 whenever packages are renamed (as in warm init), debug information is
3492 transformed along with everything else.
3493 * tweaked the optimization policy declarations which control the building
3494 of SBCL itself. Now, among other things, the system no longer saves
3495 source location debugging information. (This helps two problems at once
3496 by reducing SBCL size and by keeping SBCL from trying to look for its
3497 sources -- which may not exist -- when reporting errors.)
3498 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3499 debugging and testing purposes
3500 * cleaned up printing, making the printer call PRINT-OBJECT for
3501 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3502 methods, giving nearly-ANSI behavior
3503 * converted almost all special variables to use *FOO* naming convention
3504 * deleted PARSE-TIME functionality, since it can be done portably
3505 * moved some files out of cold init into warm init
3506 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3508 * regularized formatting of source files
3509 * added an install.sh script
3510 * fixed ridiculous memory usage of cross-compiler by making
3511 compiler/alloc.lisp not try to do pooling unless it can hook
3512 itself into the GC of the cross-compilation host. Now the system
3513 builds nicely on my old laptop.
3514 * added :SB-ALLOC in target-features.lisp-expr
3515 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3516 was not implemented)
3517 * re-did condition handling and note reporting in the compiler. Notes
3518 are no longer handled by signalling conditions. Style warnings
3519 and warnings are handled more correctly and reported in such a way
3520 that it's easy to find one or the other in your output (so that you
3521 can e.g. figure out which of many problems caused COMPILE-FILE to
3523 * changed the severity of several compiler warnings from full WARNING
3524 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3525 compiler note reporting so that it doesn't use the condition system
3526 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3527 COMPILE-FILE command)
3528 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3529 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3530 no longer supported, since their implementation was deeply intertwingled
3531 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3532 * removed bogus "support" for compiler macros named (SETF FOO), and
3533 removed the compiler macro for SETF INFO (but only after making a fool
3534 of myself on the cmucl-imp mailing list by posting a bogus patch for
3535 DEFINE-COMPILER-MACRO..)
3536 * Compiled files containing forms which have side effects on the Lisp
3537 reader (such as DEFPACKAGE forms) are now handled more correctly.
3538 (Compiler queuing of top level lambdas has been suppressed by setting
3539 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3540 * deleted various currently-unused source files, e.g. gengc.lisp. They
3541 may be added back at some point e.g. when porting to other architectures,
3542 but until they are it's distracting to distribute them and to try to
3544 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3545 there were so many of them they're just distractions, and UNCROSS is
3546 known to be able to handle the current sources
3547 * moved PROFILE functionality into TRACE, so that it will be clear
3548 how the wrapping and unwrapping of functions when you profile them
3549 interacts with the wrapping and unwrapping of functions when you
3550 trace them. (Actually, the functionality isn't there yet, but at least
3551 the interface specification is there. Hopefully, the functionality will
3552 arrive with some future maintenance release.)
3553 * removed host-oops.lisp
3554 * changed signature of QUIT function to allow UNIX-CODE argument
3555 * fixed READ-SEQUENCE bug
3556 * tweaked verbose GC output so that it looks more like the progress
3557 output that ANSI specifies for functions like LOAD
3558 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3559 * added <http://sbcl.sourceforge.com> to the banner information printed by