1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
3 * new feature: timers based on Zach Beane's excellent timer package
4 * added support for the following external formats: koi8-u,
5 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
6 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
7 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
8 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
9 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
10 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
11 * incompatible change: a threaded SBCL will no longer revert to
12 non-threaded mode on non-NPTL systems, but refuse to start entirely.
13 * bug fix: interrupts are disabled until startup is complete; no
14 more sigsegvs when receiving a signal to soon
15 * optimization: Faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
17 * bug fix: add a workaround for the memory randomization features in
18 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
19 workaround will only be in effect on systems with the proc filesystem
21 * bug fix: printing objects of type HASH-TABLE signals a
22 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
24 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
25 have been running for over 50 days. (reported by Gilbert Baumann)
26 * bug fix: the logic for getting names of functions gets less
27 confused when confronded with alternate-metaclass
28 funcallable-instances. (reported by Cyrus Harmon)
29 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
30 consistent, even on internal alternate-metaclass objects.
31 * bug fix: SB-MOP:FUNCALLABLE-STANDARD-OBJECT is now a subclass of
32 STANDARD-OBJECT, as required by AMOP.
34 ** bug fix: parent thread now can be gc'ed even with a live
36 ** bug fix: binding a special with PROGV to no value is not
37 the same as that symbol not having been bound (thanks to
39 ** bug fix: binding specials is thread safe (thanks to
41 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
42 and SB-SPROF do not die with 'no handler for signal XX in
43 interrupt_handle_now(..)' anymore
44 ** bug fix: WITH-TIMEOUT works with multiple running threads
45 * fixed some bugs revealed by Paul Dietz' test suite:
46 ** ENSURE-GENERIC-FUNCTION should take a method class object for
47 the :method-class keyword argument.
49 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
50 * new port: the Solaris operating system on x86 processors is now
51 mostly supported, though some rough edges in the environment
52 remain. (thanks to Daisuke Homma)
53 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
54 space for its heap. (thanks to Thiemo Seufer)
55 * optimization: SBCL on MIPS platforms now supports dynamic-extent
56 closures. (thanks to Thiemo Seufer)
57 * minor incompatible change: eof selects abort in the debugger.
58 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
59 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
61 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
62 deprecated, and will go away in a future revision of SBCL.
63 * minor incompatible change: GC-ON and GC-OFF are no longer
64 implemented with a counter, it does not matter how many times gc
66 * bug fix: discriminating functions for generic function classes
67 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
68 make invalid assumptions about method precedence order. (reported
70 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
71 platforms. (thanks to Thiemo Seufer)
72 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
73 * bug fix: correct pathname printing with printer escaping is on.
74 (thanks to Kevin Reid)
75 * bug fix: complex VOP definitions in "user-space" no longer trigger
76 package locks. (reported by Zach Beane)
77 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
78 for funcallable-instance functions, and is no different from
80 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
81 characters in the current readtable. (reported by Nicholas Neuss)
82 * bug fix: SUBTYPEP on various CONS types returns more a more
83 accurate acknowledgment of its certainty.
84 * optimizations: REMOVE-DUPLICATES now runs in linear time on
85 lists in some cases. This partially fixes bug 384.
86 * flush all standard streams before prompting in the REPL and the
88 * bug fix: signal handling and triggering gc do not conflict
89 directly anymore, in particular a high frequency sb-sprof does
90 not prevent gc from running
91 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
92 approximation for timezone and DST information between the
93 universal time epoch and the smallest negative 32-bit time_t.
94 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
95 year 1899 so long as the encoded time is non-negative.
96 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
97 the correct answer for non-constant rotate amounts when performing
98 an inline 32-bit rotation.
100 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
101 there is only one thread in the session
102 ** bug fix: memory leak for streams created in one thread and
103 written to in another
104 ** bug fix: lockup when compiled with gcc4
105 ** bug fix: race that allows the gc to be triggered when gc is
107 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
108 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
110 ** bug fix: finished threads are gc'ed properly
111 * fixed some bugs revealed by Paul Dietz' test suite:
112 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
113 has arguments with a different set of applicable methods from
114 the orignal arguments.
115 ** The type error thrown by MAP now has a correct expected-type
117 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
118 name a compiled function.
119 ** Three MISC tests where a large bignum was improperly coerced to
120 a float that couldn't represent that bignum during type
121 derivation were fixed.
122 ** SUBTYPEP can now handle types involving the negation of a
123 list-form FUNCTION type.
124 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
125 as (COMPLEX (AND RATIO (NOT FIXNUM))).
126 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
128 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
129 * New feature: Experimental support for bivalent streams: streams
130 opened with :element-type :default now allow character and binary
131 (unsigned-byte 8) I/O
132 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
133 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
135 * bug fix: no more highly sporadic "couldn't check whether ~S is
136 readable" when reading a stream and an interrupt hits in the middle
137 of a select system call
138 * compiler better recognizes complex arrays (reported by Eduardo
140 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
141 for variables on SBCL built with linkage-tables. (reported by Luis
143 * various error reporting improvements.
144 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
145 (Thanks to Thiemo Seufer)
146 * bug fix: nested reader invokations work correctly
147 * bug fix: it is possible to have simultaneous references to foreign
148 code and foreign data with the same name.
150 ** added x86-64 support
151 ** incompatible change: the threading api now works with thread
152 objects instead of thread ids
153 ** bug fix: threads are protected from signals and interruption when
154 starting up or going down
155 ** bug fix: a race where an exiting thread could lose its stack to gc
156 ** bug fix: don't halt on infinite error in threads if possible
157 ** fixed numerous gc deadlocks introduced in the pthread merge
158 ** bug fix: fixed thread safety issues in read and print
159 ** bug fix: debugger doesn't hang on session lock if interrupted at
160 an inappropriate moment
161 ** bug fix: run-program is now thread safe(r)
162 ** bug fix: inner with-recursive-lock no longer releases the mutex
163 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
164 * fixed some bugs revealed by Paul Dietz' test suite:
165 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
166 EXPECTED-TYPE slots filled.
167 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
169 ** MAKE-CONDITION accepts classes as type-designators.
170 ** COMPILE may never return NIL.
171 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
172 range before calling Unix time functions
174 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
175 * numerous signal handling fixes to increase stability
176 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
177 * minor incompatible change: we now correctly canonize default
178 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
179 as per the MOP, rather than the historical (INITARG INITFUNCTION
180 INITFORM). (reported by Bruno Haible)
181 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
182 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
183 for more information.
184 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
185 pathname is a directory pathname.
186 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
187 * dynamic space size on PPC has been increased to 768Mb. (thanks to
189 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
190 :METACLASS argument in addition to a class name. (reported by
191 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
192 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
193 (reported by Bruno Haible; patch from Gerd Moellmann)
194 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
196 * bug fix: more cleanups to the floating point exception handling on
197 x86-64 (thanks to James Knight)
198 * bug fix: the compiler does not try to constant fold calls of
199 COERCE and BIT-* functions when they return freshly constructed
200 objects. (reported by Nikodemus Siivola and Paul Dietz)
201 * optimization: improved the MIPS versions of generic (in the
202 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
203 * optimization: direct conversion of (unsigned-byte 32) to floats on
204 the PowerPC platform.
205 * optimization: structure instances with raw slots now use less
206 memory, and probably show better memory locality. (thanks to
208 * optimization: DYNAMIC-EXTENT declarations for lists and closures
209 are treated as requests for stack allocation on the x86-64,
210 Alpha-32, PPC and SPARC platforms.
211 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
212 the wrong file descriptor; implementation of SOCKET-OPEN-P.
213 (thanks to Tony Martinez)
215 ** gcing a dead thread can no longer lead to lockups
216 ** threads block signals until they are set up properly
217 ** errno is no longer shared by threads
218 ** interrupt-thread restores the eflags register on x86
219 ** fixed some lockups due to gc/thread interaction
220 * fixed some bugs revealed by Paul Dietz' test suite:
221 ** invalid dotted lists no longer raise a read error when
223 ** signal an error if a symbol that names a declaration is used
224 as the name of a type, or vice versa
225 ** allow using the (declare (typespec var*)) abbreviation for
226 (declare (type typespec var*)) with all type specifiers
227 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
228 ** always return NIL from PPRINT-POP when OBJECT is NIL
229 ** don't signal errors when pretty-printing malformed LABELS,
230 FLET or MACROLET forms
231 ** declarations in a DOLIST body are also in scope for the
233 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
235 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
238 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
239 * fixed cross-compiler leakages that prevented building a 32-bit
240 target with a 64-bit host compiler.
241 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
242 opened with :IF-EXISTS :OVERWRITE.
243 * fixed bug 281: error for an invalid qualifier in a short-form method
244 combination method is not signalled until the faulty method is called.
245 * bug fix: iteration variable type inferrer failed to deal with open
246 intervals. (reported by Alan Shields)
247 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
248 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
249 or more runtime options were provided to the sbcl binary.
250 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
251 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
252 * optimization: there's now a fast-path for fixnum arguments in the
253 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
254 * optimization: the code generated on x86-64 is more compact thanks
255 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
256 * bug fix: floating-point exception handling now partly works on
257 x86-64. (Thanks to James Knight)
258 * improvement to the MIPS backend from Thiemo Seufer: C-style
259 64-bit long long arguments and return values to alien functions
261 * fixed some bugs revealed by Paul Dietz' test suite:
262 ** the type-error signalled from WARN has a filled-in DATUM slot.
263 ** the type-error required when a stream is not associated with
264 a file has the stream as its datum.
265 ** type-errors on single-floats on x86-64 no longer have
266 :INVALID-OBJECT as the datum
267 ** the type-errors signalled for invalid function names now have
268 a correct expected type
269 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
270 for structures defined with a :TYPE. Documentation strings for
271 typed structures are no longer immediately discarded
272 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
273 broadcast streams and synonym streams. FILE-LENGTH now also works
274 on broadcast streams.
276 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
277 * incompatible change: the --noprogrammer option, deprecated since
278 version 0.7.5, has been removed. Please use the equivalent
279 --disable-debugger option instead.
280 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
282 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
283 inoperational for a while now) has been completely removed.
284 * null lexical environments are now printed as #<NULL-LEXENV>,
285 significantly reducing the amount of clutter in typical backtraces.
286 * documentation on weak pointers, finalization, and after GC hooks
287 has been added to the manual.
288 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
289 as other specialized array types, is much faster. SUBSEQ and
290 COPY-SEQ on such arrays have also been sped up.
291 * optimization: EQL is now more efficient when at least other argument
292 is known to be of type (OR FIXNUM (NOT NUMBER)).
293 * fixed bug: the runtime is now less vulnerable to changes in the
294 size of the SBCL object on OS X, and virtual memory is reserved for
295 all spaces that need to be at a fixed address.
296 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
297 * fixed bug: finalizers and after GC hooks that cause consing are now
299 * fixed bug: compiler error messages and summaries are now printed to
300 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
301 * fixed inference of the upper bound of an iteration variable.
302 (reported by Rajat Datta).
303 * fixed bug 211e: calling local functions with duplicated constant
304 keyword argument no longer causes a bogus style warning about an
306 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
307 ftype declaration to be disregarded. (reported by Dave Roberts)
308 * fixed bug 373: caused by erronous compilation of references to alien
309 variables in the runtime on ppc/darwin.
310 * fixed bug 376: CONJUGATE type deriver.
311 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
312 (reported by Baughn on #lisp)
313 * a cross-compiler bug on non-x86 platforms has been identified and
314 fixed. (thanks to Bruno Haible)
315 * improvements to the MIPS runtime code for increased stability.
316 (thanks to Thiemo Seufer)
317 * increased the maximimum compact environment size to allow
318 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
319 * partial workaround for bug 135: don't name the function we're
320 calling for hairy cases of EVAL, so as not to accumulate one environment
321 entry per call to EVAL. (reported by Kevin Reid)
322 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
323 * optimization: type testing for non-vector arrays should be faster.
324 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
326 * bug fix: setting 31st element of a bit vector to zero did not work
328 * bug fix: redefining a class definition which failed due to a
329 previous accessor / function clash now works (but see BUGS entry
330 #380 for more problems in this area). (thanks to Zach Beane)
331 * the long form of DEFINE-METHOD-COMBINATION disables method group
332 checking when given a single method group with pattern *. (thanks
334 * on x86 compiler supports stack allocation of results of simple
335 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
336 * support for building and running on Mac OS X 10.4 "Tiger" has been added
337 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
338 * fixed some bugs related to Unicode integration:
339 ** the restarts for recovering from input and output encoding
340 errors only appear when there is in fact such an error to
342 * fixed some bugs revealed by Paul Dietz' test suite:
343 ** MISC.549 and similar: late transformation of unsafe type
344 assertions into derived types caused unexpected code
346 ** SCALE-FLOAT type deriver is less wrong.
347 ** type derivers for EXP, LOG and similar functions compute result
348 types for complex arguments better.
349 ** (MISC.563) CONJUGATE type deriver works for very restricted
351 ** out-of-line type testers for character strings are available.
352 ** EQUAL compiler transform understands specialness of objects
354 ** accessing double-floats stored on the stack now works on x86-64.
355 ** debugger internals could sometimes create invalid lispobjs,
356 resulting in GC crashes.
357 ** MISC.548: type check weakening can convert required type into
359 ** initialization forms for bindings are not in scope of free special
362 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
363 * incompatible change: thread support for non-NPTL systems has
364 been removed - locking is buggy and unreliable. A threaded
365 SBCL build will now warn at startup and refuse to create
366 new threads, unless futex support is detected in the kernel
367 * incompatible change: the top level REPL now has only an ABORT
368 restart associated with it, not TOPLEVEL and ABORT as it used to.
369 TOP and TOPLEVEL are now available as debugger commands for
370 returning to the top level.
371 * incompatible change: forms evaluated in the REPL now use the
372 global optimization policy.
373 * incompatible change: user- and system-initialization files are
374 no longer processed with LOAD, but by READ and EVAL; hence the
375 global optimization policy, startup package, readtable, etc,
377 * The .fasl file format number has been incremented because of
378 various incompatible changes.
379 * internal entry point details and argument counts no longer appear
380 in backtraces unless explicitly requested by setting
381 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
382 * built-in and standard functions no longer have names like "top
383 level local call to FOO".
384 * fixed bug 32: functions defined in non-null lexical environments
385 now have more legible printed representation
386 * fixed bug 33: functions defined in non-null lexical environemnts
387 are now more amenable to inspection by INSPECT.
388 * workaround for bug 354: XEPs no longer appear in backtraces unless
389 explicitly requested.
390 * fixed bug: receiving the signal which results from attempting to
391 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
392 SIGBUS on other *BSDs) on architectures where the C stack is also
393 the Lisp stack (x86 and x86-64) from foreign code no longer leads
394 to debugger confusion or wild instability. (reported by Cheuksan
396 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
397 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
398 (reported by Lutz Euler)
399 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
400 compiled code. (reported by Paul Dietz)
401 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
402 specialized parameter to a method to something that is not TYPEP
403 the specializer is now possible.
404 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
405 face of package deletion.
406 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
407 pathname. (reported by David Tolpin on c.l.l)
408 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
409 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
410 STRING-STREAM and FILE-STREAM, respectively.
411 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
412 than previously; in addition, its test suite is now run on build.
413 (thanks to Luke Gorrie)
414 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
415 * optimization: added a immediate representation for single-floats
417 * fixed some bugs revealed by Paul Dietz' test suite:
418 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
419 ** attempting to create a package with a colliding nickname causes
420 correctable errors to be signalled.
421 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
422 ** several x86-64 backend bugs related to sign-extension of immediate
425 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
426 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
427 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
429 * fixed loading of multiply forward-referenced layouts.
430 (thanks to Cheuksan Wang)
431 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
432 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
433 (see COMPILE-FILE documentation for details of :PRINT option)
434 * fixed bugs 19 and 317: fixed-format floating point printing is
435 more accurate. This also fixes a bug reported by Adam Warner
436 related to the ~@F format directive.
437 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
439 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
440 dispatch table if the from-char is a dispatch macro character.
441 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
442 by the wordsize no longer ignore the last word. (reported by Lutz
444 * fixed bug in type checking of dynamic-extent variables. (reported
446 * optimization: sequence traversal functions use their freedom to
447 coerce function designators to functions.
448 * optimization: code with many calls to CLOS methods specialized on
449 CLOS classes has had redundant type checks removed.
450 * optimization: added declarations to speed up operations that access
451 the internal character database (for example STRING-UPCASE)
452 * optimization: comparison operations between floats and sufficiently small
453 fixnums no longer create extra rationals
454 * fixed some bugs related to Unicode integration:
455 ** portions of multibyte characters at the end of buffers for
456 character-based file input are correctly transferred to the
457 start of the buffer at the next read.
458 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
459 passing it through to OPEN.
460 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
461 argument given to internal calls to OPEN.
462 ** the built-in comment readers (introduced by character sequences
463 ";" and "#|") are more forgiving to encoding errors; they will
464 STYLE-WARN and then attempt to resync the stream at a character
465 boundary. (thanks to Teemu Kalvas)
466 * fixed some bugs in the x86-64 port:
467 ** Negative short int return values from c-calls are sign-extended
469 ** The stack is aligned to 16-bytes for c-calls, as required by
470 the ABI. (thanks to Cheuksan Wang)
471 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
472 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
473 for enums. (thanks to Vincent Arkesteijn)
474 ** Multiple small optimizations and bugfixes for floating point
476 * fixed some bugs revealed by Paul Dietz' test suite:
477 ** Space, Tab, Linefeed, Return and Page have the invalid
478 secondary constituent character trait.
479 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
481 ** WITH-INPUT-FROM-STRING should only update the index place on
483 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
485 ** Bit-array operations (BIT-AND and similar) worked incorrectly
486 with one-dimensional arrays with fill pointers.
487 ** TYPE-OF failed on a complex with an integer realpart and a
489 ** compiler failure during type inference for the code of form
490 (IF (EQL X (THE ...)) ...) (MISC.535).
492 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
493 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
494 platform. The port supports 61-bit fixnums, large memory spaces
495 and reloading shared object files.
496 * enhancement: saving cores with foreign code loaded is now
497 supported on ppc/Darwin in addition to the previously supported
499 * enhancement: the statistical profiler now walks deeper into the
500 call stack for more meaningful call-graphs and accrued time
501 reports (x86/x86-64 only). It also now reports time spent in
503 * enhancement: it is now possible to trace most individual methods
504 of a generic function in addition to tracing the generic function
506 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
508 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
509 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
510 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
511 produces an error. (thanks to Vincent Arkesteijn)
512 * bug fix: NAMESTRING on pathnames with :WILD components in their
513 directories works correctly. (thanks to Artem V. Andreev)
514 * fixed bug 125: compiler preserves identity of closures. (reported
516 * bug fixed: functions with &REST arguments sometimes failed with
517 "Undefined function" when compiled with (DEBUG 3). (reported by
519 * bug fix: overflow during compiling of setting element of a bit
520 vector with constant index and value. (reported by Timmy Douglas)
521 * build fix: fixed the dependence on *LOAD-PATHNAME* and
522 *COMPILE-FILE-PATHNAME* being absolute pathnames.
523 * on x86 compiler partially supports stack allocation of dynamic-extent
525 * GO and RETURN-FROM do not check the extent of their exit points
526 when compiled with SAFETY 0.
527 * fixed some bugs related to Unicode integration:
528 ** encoding and decoding errors are now much more robustly
529 handled; it should now be possible to recover even from invalid
530 input or output to the terminal. (thanks to Teemu Kalvas)
531 ** provided a first cut at implementing STRING-TO-OCTETS and
532 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
533 ** altered the SB-MD5 contributed module slightly, changing the
534 interface just enough for it to be supportable for builds where
535 lisp characters are not eight bits.
536 * fixed some bugs revealed by Paul Dietz' test suite:
537 ** the FORMATTER-generated functions for ~V[ conditionals require
538 the correct number of arguments.
539 ** READ-FROM-STRING returns the mandated second value when applied
540 to displaced strings.
541 ** the #\Rubout and #\Backspace characters are treated as invalid
542 constituent characters by the tokenizer.
544 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
545 * new feature: reloading changed shared object files with
546 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
547 * new feature: references to foreign variables and functions
548 can now be compiled and loaded before the corresponding shared
549 object file is loaded, as long as the foreign definitions are
550 available at runtime.
551 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
552 supported. (thanks to Dan Debertin)
553 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
554 just keywords. (thanks to Vincent Arkesteijn)
555 * fixed bug #331: structure-class instances corresponding to
556 DEFSTRUCT forms are now created eagerly.
557 * fixed bug #345: backtraces from calls to undefined functions work
558 on x86 as well. Related bug #61 is now also partially fixed on x86
559 (backtraces from throws to unknown catch tags.)
560 * bug fix: lambda-list parsing is now stricter vrt. order and number
561 of lambda-list keywords.
562 * bug fix: as specified by AMOP, an error is signalled if a
563 class-option appears multiple times in a DEFCLASS form. (reported
565 * bug fix: RANDOM can be compiled when the compiler derives the type
566 of its numeric argument as a disjoint set of small integers.
567 (reported by Paul Dietz)
568 * bug fix: starting a core saved with shared objects loaded when
569 those objects are not available no longer causes threaded SBCL to
570 hang. (reported by Sean Ross)
571 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
573 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
574 argument, which must always be NIL. (reported by Kalle Niemitalo)
575 * bug fix: printing 1.0d+23 no longer results in an error.
576 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
577 * bug fix: structure slot setters preserve evaluation order. (thanks
579 * fixed some bugs related to Unicode integration:
580 ** RUN-PROGRAM can allow its child to take input from a Lisp
581 stream. (reported by Stefan Scholl)
582 ** ASDF-INSTALL successfully downloads .tar.gz files in all
583 locales. (reported by Ken Causey)
584 * fixed some bugs revealed by Paul Dietz' test suite:
585 ** INCF, DECF and REMF evaluate their place form as specified in
587 ** FORMATTER expands ~{ ~} iteration directives with V or #
588 parameters correctly.
589 ** FORMATTER deals with the ~@[ ~] conditional directive where the
590 consequent uses no arguments correctly.
591 ** the system has a partial understanding of the (COMPLEX RATIO)
593 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
596 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
597 * new feature: a build-time option (controlled by the :SB-UNICODE
598 keyword feature, enabled by default) for building the system with
599 support for the entire 21-bit character space defined by the
601 * new feature: the system now has rudimentary external-format
602 support; the primary user-visible change at this time is that
603 characters with the high bit set (such as lower-case-e-acute) will
604 print correctly to a terminal in a UTF-8 environment.
605 * minor incompatible change: BASE-CHAR no longer names a class;
606 however, CHARACTER continues to do so, as required by ANSI.
607 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
608 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
609 has been moved to the SB-EXT package (temporarily re-exported from
611 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
612 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
614 * fixed bug #351: better error-handlind and reporting for malformed
616 * fixed bug #350: bignum-printing is now more memory-efficient,
617 allowing printing of very large bignums, eg. (expt 2 10000000).
618 (reported by Bruno Haible)
619 * fixed bug #302: better primitive-type selection for intersection
621 * fixed bug #308: non-graphic characters now all have names, as
622 required. (reported by Bruno Haible)
623 * bug fix: redefining a class with different superclasses now correctly
624 removes it from the direct-subclasses of its previous superclasses.
625 (reported by David Morse)
626 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
627 new value now works. (reported by Bruno Haible)
628 * bug fix: correct canonicalization of multiple non-standard slot
629 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
630 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
631 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
632 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
633 now exists, an signals an error.
634 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
635 during macroexpansion for non-iteration variables as well. (reported
636 by Bruno Haible for CMUCL)
637 * bug fix: Cyclic structures and unprintable objects in compiler
638 messages no longer cause errors. (reported by Bruno Haible)
639 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
640 and READ-FROM-STRING all now return a primary value of NIL if
641 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
642 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
643 (reported by Bruno Haible for CMUCL)
644 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
645 do not designate a condition. (reported by Bruno Haible for
647 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
648 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
649 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
650 permitting resolution in favour of any of the conflicting symbols.
651 (reported by Bruno Haible for CMUCL)
652 * bug fix: EQUAL compiler optimizations is less aggressive on
653 strings which can potentially compare true despite having distinct
654 specialized array element types.
655 * bug fix: unit enumerations can be defined without dividing by
656 zero. (thanks to Vincent Arkesteijn)
657 * FORMAT compile-time argument count checking has been enhanced.
658 (report from Bruno Haible for CMUCL)
659 * a partial workaround for the bug 262: the compiler does not try to
660 inline-expand a local function doing RETURN-FROM from a deleted
661 BLOCK. (thanks to Peter Denno for the bug report and to David
662 Wragg for the simple test case)
663 * fixed some bugs revealed by Paul Dietz' test suite:
664 ** RENAME-PACKAGE allows all package designators as new package
666 ** constraint propagation and lambda variable substitution are
667 more cautious in dealing with partially deleted code.
668 ** compiler sometimes lost reoptimization passes.
669 ** CERROR, given a condition as condition designator, passes its
670 remaining arguments to the continue format control without
672 ** Case-altering FORMAT directives work correctly on non-ASCII
674 ** The REAL type specifier handles bounds outside the floating
675 point ranges without signalling FLOATING-POINT-OVERFLOW.
676 ** Functions with IR1-transformations can create intercomponent
677 references to global functions.
678 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
680 ** FORMAT ~R treats a nil value for its first parameter correctly.
682 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
683 * enhancement: saving cores with foreign code loaded is now
684 supported on x86/NetBSD and sparc/Linux in addition to the previously
686 * bug fix: on some platforms repeated installations caused multiple
687 copies of HTML documentation to be installed -- should not happen
688 any more. (reported by Stefan Scholl)
689 * bug fix: parsing self-recursive alien record types multiple times
690 no longer causes infinite recursion. (reported by Thomas F. Burdick,
691 original patch by Helmut Eller for CMUCL)
692 * bug fix: stack-exhaustion detection works now on NetBSD as well.
693 (thanks to Richard Kreuter)
694 * bug fix: defining classes whose accessors are methods on existing
695 generic functions in other (locked) packages no longer signals
696 bogus package lock violations. (reported by François-René Rideau)
697 * bug fix: special variables as DEFMETHOD parameters no longer have
698 associated bogus type declarations. (reported by David Wragg and
700 * bug fix: read-write consistency on streams of element-type
701 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
702 * bug fix: redefiniton of the only method of a generic function with
703 no DEFGENERIC no longer emits a full WARNING. In addition,
704 redefinition of generic functions with no DEFGENERIC to an
705 incompatible lambda list now signals an error. (thanks to Zach
707 * bug fix: DEFGENERIC now works even when there's a function of the
708 same name in an enclosing lexical environment. (thanks to Zach
710 * fixed compiler failure, caused by instrumenting code during
711 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
712 * optimization: added loop analysis and improved register allocation
713 * fixed some bugs revealed by Paul Dietz' test suite:
714 ** POSITION on displaced vectors with non-zero displacement
715 returns the right answer.
716 ** (SIMPLE-STRING) is a valid type specifier for sequence
718 ** *PRINT-LEVEL* handling for slotless structures is pedantically
720 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
721 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
723 ** The justification version of the FORMAT ~< directive treats
724 non-zero minpad parameter correctly.
726 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
727 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
728 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
729 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
730 the supported interface.
731 * new feature: Single-stepping of code compiled with DEBUG 2 or
732 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
733 * new feature: saving cores with foreign code loaded is now
734 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
735 Timothy Moore's work for CMUCL)
736 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
737 parameters to * instead of NIL if no initform is supplied.
738 (reported by Johan Bockgaard)
739 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
740 correctly when FUNCALL appears as the car of the form. Note:
741 despite this FUNCALL forms are not currently subject to
742 compiler-macro expansion. (port of Raymond Toy's fix for the
743 same from CMUCL, reported by Johan Bockgaard)
744 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
745 (thanks for Teemu Kalvas)
746 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
747 case instead of terminating the iteration (thanks for Julian
748 Squires, Sean Champ and Raymond Toy)
749 * bug fix: incorrect expansion of defgeneric that caused a style
750 warning. (thanks for Zach Beane)
751 * bug fix: slot accessor effective method computation works properly
752 for classes with multiple non-standard applicable methods on
753 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
754 * on x86 compiler supports stack allocation of results of LIST and
755 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
756 CMUCL implementation by Gerd Moellmann)
757 * fixed some bugs revealed by Paul Dietz' test suite:
758 ** FORMAT strings with both the ~<~:;~> form of the justification
759 directive and pretty-printing directives cause an error.
761 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
762 * incompatible change: the internal functions
763 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
764 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
765 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
766 instead of the old functions.
767 * new feature: on platforms where "dladdr" is available foreign
768 function names now appear in backtraces. (based on Helmut Eller's
770 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
771 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
773 * documentation: ASDF manual is now distributed with SBCL.
774 * bug fix: SBCL can now load its contributed modules with REQUIRE
775 even if the system-provided entries have been removed from
776 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
778 * bug fix: backtraces involving undefined functions or assembly
779 routines are more informative. (thanks to Brian Downing)
780 * bug fix: mutually referent alien structures now work correctly.
781 (reported by Rick Taube)
782 * bug fix: structures defined by WITH-ALIEN can be referred to
783 within other definitions in the same WITH-ALIEN.
784 * bug fix: division operators (MOD, TRUNCATE and the like) with
785 constant zero divisors and integer dividends no longer generate
787 * bug fix: provide default methods for INPUT-STREAM-P and
788 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
789 * bug fix: improve the detection and resolution of MOP metacycles
790 (where effective method computation depends on the generic function
791 having its effective method computed). (reported by Bruno Haible)
792 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
793 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
794 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
795 * bug fix: pathnames with relative directory components can be
796 represented relative to default pathnames.
797 * optimization: in taking the GCD of bignums, reduce the two bignums
798 to approximately the same size (using Euclid's algorithm) before
799 applying the more sophisticated binary GCD. (thanks to Juho
801 * optimization: COUNT on bitvectors now operates word-at-a-time.
802 * optimization: ASH with a positive, but not necessarily constant,
803 (leftwards) shift, when in a modular context, is compiled to a
805 * fixed some bugs revealed by Paul Dietz' test suite:
806 ** FORMAT variable parameters ("~V<char>") are defaulted properly
807 if the corresponding argument is NIL.
808 ** FORMAT directives accepting a minpad parameter treat negative
810 ** literal commas as character parameters to FORMAT directives are
812 ** literal spaces directly after ~<Newline> directives within a
813 format-logical-block (~:< ~@:>) do not induce :FILL-style
814 conditional newlines.
815 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
816 as specified: it no longer includes conditional newlines).
817 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
819 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
820 :PER-LINE-PREFIX argument does not evaluate to a string.
822 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
823 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
824 the manual for details; for now, package locks can be disabled by
825 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
826 if no major problems are found then it is likely that they will be
827 compiled in unconditionally.
828 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
829 unsupported operators on all platforms. To load a shared library
830 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
831 object file, link it into a shared library outside of SBCL and
832 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
834 * bug workaround: ROOM T and the GC were not working together
835 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
836 reporting facility aren't preserved. That reporting has been
837 disabled, so now until and unless someone figures out how to make it
838 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
839 * minor incompatible change: as threatened around sbcl-0.8.0, the
840 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
841 The symbols are also exported from SB-PCL for backwards
842 compatibility, but more so than before SB-PCL should be treated as
843 an implementation-internal package.
844 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
846 * the SB-SPROF contrib now works on (most) non-x86 architectures.
847 It is known as of this release not to work on the Alpha, however.
848 * fixed bug #167: errors signalled due to illegal syntax in method
849 bodies are now more legible.
850 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
851 designators and can hence be used with TYPEP.
852 * fixed bug #333: CHECK-TYPE now ensures that the type error
853 signalled, if any, has the right object to be accessed by
854 TYPE-ERROR-DATUM. (reported by Tony Martinez)
855 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
856 5.1.2.3 for multiple-value place subforms. (reported by Kalle
858 * fixed bug #334: programmatic addition of slots using specialized
859 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
860 and :ALLOCATION :CLASS slots.
861 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
862 float exponents. (rereported by Peter Seibel)
863 * fixed a bug: #\Space (and other whitespace characters) are no
864 longer considered to be macro characters in standard syntax by
866 * fixed bug: initialization of condition class metaobjects no longer
867 causes an instance of the condition to be created. (reported by
869 * fixed bug: it is now possible to have slots such that
870 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
871 description is neither :INSTANCE nor :CLASS.
872 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
873 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
874 SLOT-VALUE-USING-CLASS), and no longer causes errors with
875 non-standard SLOT-DEFINITION-ALLOCATION values.
876 * fixed bugs: various race conditions handling exiting threads.
877 CL-PPCRE's thread torture test now passes.
878 * fixed arguably-a-bug: GC time proportional to number of threads in
879 system even when most of them are idle
880 * optimization: improved performance of BIT and SBIT on bit-vectors.
881 * .fasl file incompatibility: The fasl file version number has
882 been incremented because of changes associated with package locks.
884 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
885 * minor incompatible change: the system no longer provides
886 optimization hints (conditions which are TYPEP
887 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
888 mode; these hints are still emitted when higher SPEED optimization
890 * new contrib module: a sampling profiler (profiling by statistical
891 sampling, rather than by instrumenting functions) is available as
892 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
893 * the behaviour of the standard function ED is now customizeable by
894 third parties through a hook variable: see ED's documentation
895 string for information on the protocol.
896 * the compiler no longer emits efficiency notes for (FUNCALL X)
897 when the type of X is uncertain under default optimization
899 * fixed bug 276: mutating a binding of a specialized parameter to a
900 method to something that is not TYPEP the specializer is now
902 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
903 exhibit the required behaviour on the x86 platform. (thanks to
904 Peter van Eynde, Eric Marsden and Bruno Haible)
905 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
906 even for difficult arguments. (reported by Peter Graves)
907 * fixed bug 141a: the backquote printer now descends quoted
909 * fixed another bug in backquote printing: no more destructive
910 modification of the form's list structure. (reported by Brian
912 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
913 move between its address being taken and the call to
914 interrupt_thread, fixing a crashing race condition.
915 * the SB-POSIX contrib implementation has been adjusted so that it
916 no longer exhibits ridiculously poor performance when constructing
917 instances corresponding to C structs.
919 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
920 * minor incompatible change: the sb-grovel contrib now treats C
921 structures as alien (in the sense of SB-ALIEN) objects rather than
922 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
923 has implications for memory management of client code
924 (sb-grovel-returned objects must now be manually managed) and for
925 type safety (alien objects now have full types).
926 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
927 used to control emission of compiler diagnostics, rather than the
928 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
929 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
930 quality should be considered deprecated.
931 * install.sh now installs the user manual as well
932 * (not quite a new documentable feature, but worth considering in
933 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
934 beginnings of a semantically meaningful condition hierarchy is
935 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
937 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
938 designator as the defaults argument.
939 * fixed bug: Displaced arrays whose displaced-to array has become
940 too small now cause ARRAY-DIMENSION to signal an error, providing
941 for safer bounds-checking. (reported by Bruno Haible)
942 * fixed bug: DEFCLASS slot definitions with identical :READER and
943 :WRITER names now signal a reasonable error. (reported by Thomas
945 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
947 * fixed bug: Invalid slot specification errors now print correctly.
948 (thanks to Zach Beane)
949 * fixed bug 320: Shared to local slot value transfers in class
950 redefinitions now happen corrently from superclasses as
951 well. (reported by Bruno Haible)
952 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
954 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
955 improper lists correctly. (reported by Bruno Haible)
956 * fixed bug 313: source-transform for <fun-name> was erroneously
957 applied to a call of a value of a variable with name <fun-name>.
958 (reported by Antonio Menezes Leitao)
959 * fixed bug 307: The obsolete instance protocol ensures that
960 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
961 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
962 remove dead unknown-values globs from the middle of the stack.
963 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
964 easier to resume long computations after using *BREAK-ON-SIGNALS*
965 to diagnose and fix failures. (thanks to Nikodemus Siivola)
966 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
967 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
968 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
969 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
970 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
972 * fixed a (fairly theoretical) bug in string printing: if
973 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
974 does not have array-element-type equal to the most general string
976 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
977 function name. (thanks to Nikodemus Siivola)
978 * fixed bug: compile-time format string checker failed on
979 non-closed ~{. (reported by Thomas F Burdick)
980 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
981 don't warn on legal loop code involving more than one aggregate
982 boolean. (thanks to Nikodemus Siivola)
983 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
984 in keyword position to MAKE-PACKAGE was not being reported as
986 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
987 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
989 * fixed bugs 280 and 312: the checking for multiple definitions in a
990 file is less likely to become confused by uses of inline
992 * fixed bug: the #S reader macro performs the keyword coercion
993 specified for slot names. (reported by Kalle Niemitalo)
994 * fixed bug: lambda lists may contain symbols whose names start with
995 & but are not lambda-list-keywords; their occurrence triggers a
997 * fixed bug 321: define-method-combination argument lambda lists do
998 not cause invalid code to be generated when &optional or &aux
999 variables have default values. (reported by Bruno Haible)
1000 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1001 have CLOS classes; this appears also to have fixed reported
1002 instability in stack exhaustion detection.
1003 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1004 MUFFLE-WARNING when no associated restart is present is now
1006 * optimization: rearranged the expansion of various defining macros
1007 so that each expands into only one top-level form in a
1008 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1010 * optimization: used a previously little-used slot in symbols to
1011 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1013 * fixed some bugs revealed by Paul Dietz' test suite:
1014 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1016 ** Fixed an optimization bug related to inheritance of initforms
1017 from local to shared slots.
1018 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1019 ** CAST optimizer forgot to flush argument derived type.
1020 ** print/read consistency on floats is now orders of magnitude
1021 more likely. (thanks also to Bruno Haible for a similar report
1023 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1024 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1025 for objects of type REAL. Make it so.
1026 ** SXHASH is specified (infelicitously) to respect similarity,
1027 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1028 it so. (thanks to Markus Ziegler)
1029 ** on the Alpha, the compiler succeeds in compiling functions
1030 returning a known number of arguments greater than 63.
1031 ** fixed handling of invalid NIL arguments in keyword position
1033 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1035 ** provided a readably-printable representation for RANDOM-STATE
1037 ** ensured that pathnames, where they have a namestring, always
1038 print using #P"..." syntax.
1040 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1041 * Support for the forthcoming 2.0 version of the NetBSD kernel
1042 running on x86 hardware has been added. (thanks to Perry
1043 E. Metzger most immediately, and others for their past work)
1044 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1045 current release version; SBCL's OpenBSD support had been broken
1046 since about the time of OpenBSD's switch to ELF binary format.)
1047 * [placeholder for DX summary]
1048 ** user code with &REST lists declared dynamic-extent, under high
1049 speed or space and low safety and debug optimization policy.
1050 * The manual has been converted to Texinfo format and the debugger
1051 chapter from the cmucl manual has been added.
1052 * A facility has been added to extract documentation strings from
1053 sbcl and store them as Texinfo-formatted snippets for inclusion in
1054 the manual (via Texinfo's @include directive)
1055 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1056 the test case to Dave Roberts)
1057 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1058 pointers. (reported by Sean Ross)
1059 * bug fix: PROFILE output is printed nicely even for large numerical
1060 values. (thanks to Zach Beane)
1061 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1062 greater than 32 handle EOF correctly.
1063 * bug fix: on X86 an immediate argument of the IMUL instruction is
1064 correctly printed in disassembly. (thanks to Lutz Euler)
1065 * bug fix: class slots in redefined classes preserve their old
1066 values. (thanks to Bruno Haible and Nikodemus Siivola)
1067 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1068 succeeds. (reported by Marco Baringer)
1069 * fixed some bugs revealed by Paul Dietz' test suite:
1070 ** READ-SEQUENCE now works on ECHO-STREAMs.
1071 ** RATIONALIZE works more according to its specification. (thanks
1074 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1075 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1076 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1077 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1078 should matter to you only if you rebind the printer control
1079 variables and then find you want different bindings in the
1080 debugger than in the ordinary execution of your program.)
1081 * The runtime build system has been tweaked to support building
1082 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1083 assembler and linker. (thanks to Nikodemus Siivola)
1084 * Unbound, undefined, undeclared variables now trigger full
1085 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1086 more often programmer error than deliberate exploitation of undefined
1088 * optimization: the hash algorithm for strings has changed to one
1089 that is less vulnerable to spurious collisions. (thanks to Juho
1091 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1092 needless bounds checking. (thanks to Juho Snellman)
1093 * optimization: implemented multiplication as a modular
1094 (UNSIGNED-BYTE 32) operation on the PPC backend.
1095 * fixed some bugs revealed by Paul Dietz' test suite:
1096 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1098 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1099 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1100 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1102 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1104 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1106 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1107 their output stream on EOF from read.
1108 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1109 have been read to end-of-file.
1110 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1112 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1113 description of determination of which consecutive characters
1115 ** Printing the "Space" character with escaping on now yields "#\\ ",
1116 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1117 ** Reading floating-point numbers with *READ-BASE* set to a number
1118 less than 10 works correctly.
1119 ** Reading floating-point numbers with *READ-BASE* set to a number
1120 more than 10 works correctly.
1121 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1122 the readtable currently in effect.
1124 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1125 * minor incompatible change: parsing of namestrings on a physical
1126 (Unix) host has changed; numbers after the final #\. in a
1127 namestring are no longer interpreted as a version field. This is
1128 intented to be largely invisible to the user, except that the
1129 meaning of the namestring "*.*.*" has changed: it now refers to a
1130 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1131 should usually be replaced by
1132 (make-pathname :name :wild :type :wild :version :wild)
1133 with the added benefit that this is more likely to be portable.
1134 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1135 option to OPEN now signals an error if the file being opened
1136 exists; this may have an impact on existing code.
1137 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1138 signals received, on the PowerPC platforms (both Linux and
1139 Darwin). (thanks to Pierre Mai for pointing out the location of
1141 * several fixes on OS X: The system now builds and runs cleanly on
1142 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1143 (thanks to Brian Mastenbrook)
1144 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1145 second-resolution: integer multiples of 1/3600 between -24 and 24.
1146 (thanks to Vincent Arkesteijn)
1147 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1148 type when called with 1 argument; PEEK-CHAR checked type of
1149 PEEK-TYPE only after having read first character from a
1150 stream. (reported by Peter Graves)
1151 * bug fix: the garbage collector now has much better locality
1152 behaviour, and in particular no longer treats all memory as being
1153 exhausted when many small objects point to each other in a deeply
1155 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1156 recognized as being TYPEP their class.
1157 * bug fix: the PUSHNEW documentation string has been corrected.
1158 (thanks to Vincent Arkesteijn)
1159 * bug fix: defaulting of the value for the last of an atypically
1160 large number of multiple values being bound was not being
1161 performed correctly on the Alpha or PPC platforms
1162 * optimization: implemented multiplication as a modular
1163 (UNSIGNED-BYTE 32) operation on the x86 backend.
1164 * optimization: SEARCH on simple-base-strings can now be open-coded.
1165 (see also contrib/compiler-extras.lisp for inspiration for
1166 teaching the compiler about the Boyer-Moore algorithm).
1167 * value, returned by MAX (and MIN) called with several EQUALP, but
1168 not EQL, arguments now does not depend on compiler settings.
1169 * fixed some bugs revealed by Paul Dietz' test suite:
1170 ** in stack analysis liveness information is propagated from
1171 non-local entry points.
1172 ** pathwise CAST removing failed when the CAST node did not start
1174 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1175 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1177 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1178 host is already defined.
1179 ** RENAME-FILE works on streams instead of signalling an internal
1181 ** PEEK-CHAR uses the current readtable when determining whether
1182 or not a character is whitespace.
1183 ** MERGE-PATHNAMES handles the case when the pathname does not
1184 specify a name while the default-pathname specifies a version.
1185 ** Pathnames now stand a better chance of respecting print/read
1187 ** Attempting to use standardized file system operators with a
1188 pathname with invalid :DIRECTORY components signals a
1190 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1192 ** DIRECTORY on logical pathnames is more correct.
1193 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1194 signal a TYPE-ERROR if their argument is not a stream.
1195 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1196 designator argument does not designate a stream.
1197 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1198 examining the synonym.
1199 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1201 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1202 element-type larger than ([UN]SIGNED-BYTE 32).
1204 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1205 * When built with the :SB-FUTEX feature, threaded builds now take
1206 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1207 for faster/more reliable mutex and condition variable support.
1208 * Incompatible change (but one you probably shouldn't have been using
1209 anyway): the interface and code for arbitrating between multiple
1210 threads in the same user session has been redesigned.
1211 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1212 error when called without an explicit environment argument.
1213 (thanks to Nikodemus Siivola)
1214 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1215 confused about their position. (thanks to Adam Warner and Gerd
1217 * bug fix: Pretty printing backquoted forms with unquotations in the
1218 argument list position of various code constructs such as LAMBDA
1219 now works correctly. (reported by Paul Dietz)
1220 * bug fix: Pretty printing unquotations no longer loses all
1221 stream position information.
1222 * optimization: performance of string output streams is now less
1223 poor for multiple small sequence writes.
1224 * optimization: performance of CSUBTYPEP in the presence of complex
1225 expressions involving CONS and NOT many times has been improved.
1226 (reported by Paul Dietz)
1227 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1229 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1230 streams for the REPL, for the debugger, and so on. (thanks to
1232 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1233 * fixed some bugs revealed by Paul Dietz' test suite:
1234 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1235 is ignored if it is too small, rather than propagating through
1236 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1237 ** extremely complex negations of CONS types were not being
1238 sufficiently canonicalized, leading to inconsistencies in
1240 ** VALUES tranformer lost derived type.
1242 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1243 * fixed a bootstrapping bug: the build process no longer assumes
1244 that the various BOOLE-related constants have the same value in
1245 host and target lisps. (noted by Paul Dietz' test suite on an
1246 SBCL binary built from CLISP)
1247 * The system can now be dynamically linked on the MIPS platform,
1248 which enables dynamic loading of foreign code from Lisp. (thanks
1249 to Ralf Baechle for discussions on the MIPS ABI)
1250 * The system now records debugging information for its own source
1251 files in a filesystem-position-independent manner, relative to
1252 the "SYS" logical host.
1253 * fixed a compiler bug: MV-LET convertion did not check references
1254 to the "max args" entry point. (reported by Brian Downing)
1255 * tweaked disassembly notes to be less confident about proclaiming
1256 some instruction as an LRA. (thanks to Brian Downing)
1257 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1258 now each have their own history, command character, and other
1259 characteristics. (thanks to David Lichteblau)
1260 * fixed some bugs revealed by Paul Dietz' test suite:
1261 ** compiler failure in compiling LOGAND expressions including a
1263 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1264 shift greater than 32.
1265 ** FLUSH-DEST did not mark blocks for type check regeneration.
1266 ** HANDLER-CASE failed to accept declarations in handler clauses
1267 in some circumstances.
1269 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1270 * New code in contrib/sb-introspect (still probably not entirely
1271 stable yet) provides some support for smart Lisp development
1272 environments like SLIME.
1273 * The conditions signalled for errors occurring when loading .fasl
1274 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1275 in a way which should help ASDF recover gracefully.
1276 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1277 stuff has been cleaned up. If you code contrib/ stuff, this might
1278 affect you, and you can look at contrib/README, contrib/STANDARDS,
1279 and/or the 0.8.4.27 diff to check.
1280 * In full calls the compiler now does not generate checks for declared
1281 argument types for all arguments.
1282 * various threading fixes
1283 ** and some experimental patches which didn't make it into
1284 the main tree for this release, but which are shipped in
1285 contrib/experimental-thread.patch as a possible fix for some
1286 failures (deadlock, spinning...) in GC-intensive multithreaded
1288 * fixed PPC build problem (source code incompatibility of different
1289 library versions): added offsetof() hackery which attempts to divine
1290 where glibc maintainers put uc_mcontext today
1291 * fixed bug 282: compiler does not trust type assertions while passing
1292 arguments to a full call.
1293 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1294 &OPTIONAL VALUES type parameter.
1295 * fix bug 214: algorithm for noting rejected templates is now more
1296 similar to that of template seletion. (also reported by rydis on
1298 * fixed bug 141b: printing backquoted information readably and prettily
1299 inserts a space where necessary.
1300 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1301 (CHARACTER 10) are now reported as errors, rather than propagated
1302 as unknown types. (reported by piso on #lisp)
1303 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1304 with values NIL and :ERROR. (thanks to Milan Zamazal)
1305 * fixed bug 191c: CLOS now does proper keyword argument checking as
1306 described in CLHS 7.6.5 and 7.6.5.1.
1307 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1308 longer raise an error; further, using a list as a for-as-arithmetic
1309 counter now raises a meaningful error.
1310 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1311 now understood by sequence creation functions such as MAKE-SEQUENCE
1313 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1314 a STRING-INPUT-STREAM.
1315 * compiler enhancement: SIGNUM is now better able to derive the type
1317 * type declarations inside WITH-SLOTS are checked. (reported by
1319 * fixed some bugs revealed by Paul Dietz' test suite:
1320 ** incorrect optimization of TRUNCATE for a positive first
1321 argument and negative second.
1322 ** compiler failure in let-convertion during flushing dead code.
1323 ** compiler failure while deriving type of TRUNCATE on an
1324 interval, containing 0.
1325 ** ASH of a negative bignum by a negative bignum count now returns
1327 ** intersection of CONS types now canonicalizes properly, fixing
1328 inconsistencies in SUBTYPEP.
1330 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1331 * incompatible change: The --disable-debugger command line
1332 option now clobbers the debugger at a more fundamental
1333 level, by redefining #'INVOKE-DEBUGGER instead of by
1334 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1335 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1336 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1337 enter the debugger REPL and then suffer recursive errors
1338 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1339 while under the new system, BREAK in --disable-debugger mode
1340 terminates the system just as an unhandled error would.
1341 * fixed compiler performance when processing loops with a step >1;
1342 * bug fix: DOCUMENTATION now retrieves generic function
1343 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1344 support has been systematized, and now supports the methods
1345 specified by ANSI, along with a default method and a method for
1346 slot documentation. (reported by Nathan Froyd)
1347 * bug fix: effective methods associated with a generic function are
1348 no longer cached over a change of that generic function's method
1349 combination. (reported by Andreas Fuchs)
1350 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1351 names a non-existent directory. (thanks to Andreas Fuchs)
1352 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1353 the PPC platform, lead to stack corruption; this has been fixed.
1354 (reported by Rainer Joswig)
1355 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1356 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1357 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1358 arithmetic in general, is now much more reliable on the PPC
1360 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1361 platform now returns the right answer.
1362 * optimization: restored some effective method precomputation in
1363 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1364 precomputation is now tunable.
1365 * optimization: compiler-internal data structure use has been
1366 reviewed, and changes have been made that should improve the
1367 performance of the compiler by about 20%.
1368 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1369 simple-base-strings and simple-bit-vectors is improved.
1370 * optimization: the optimization of 32-bit logical and arithmetic
1371 functions introduced in version 0.8.3 on the x86 has been
1372 implemented on the mips, ppc and sparc platforms; an
1373 implementation of the same facility, but for 64-bit arithmetic,
1374 has been added for the alpha.
1375 * microoptimization: the compiler is better able to make use of the
1376 x86 LEA instruction for multiplication by constants.
1377 * bug fix: in some situations compiler did not report usage of
1378 generic arithmetic in (SPEED 3) policy.
1379 * bug 145b fix: compiler used wrong type specifier while converting
1380 MEMBER-types to numeric.
1381 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1383 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1384 index argument now works properly on the Alpha platform.
1385 * bug fix: floating point exception treatment on the Alpha platform
1387 * bug fix: FILE-POSITION works much better on string input and
1388 output streams. (thanks to Nikodemus Siivola)
1389 * bug fix: many threading/garbage collection symptoms sorted.
1390 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1391 might be pseudo-atomic.
1392 * internal change: Stopping for GC is now done with signals not
1393 ptrace. GC is now done in whichever thread wanted it, instead of
1395 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1397 * bug fix: result form in DO is not contained in the implicit
1399 * incompatible change: ICR structure is changed; the value part of
1400 CONTINUATION is now called LVAR; corresponding functions are
1401 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1402 * added type deriver for ISQRT (thanks to Robert E. Brown).
1403 * bug fix: better support for loading from the command line when an
1404 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1406 * fixed some bugs revealed by Paul Dietz' test suite:
1407 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1408 ** ROUND and FROUND now give the right answer when given very
1409 small float arguments.
1410 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1412 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1413 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1414 ** LCM should return a non-negative integer.
1415 ** PARSE-INTEGER returned the index of a terminator instead of the
1416 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1417 ** PARSE-INTEGER returned an incorrect index being applied to a
1419 ** LCM with two arguments of 0 returns 0 rather than signalling
1421 ** unsigned addition of a 32-bit constant with the high bit set no
1422 longer causes an internal compiler error on the x86.
1423 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1424 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1425 with negative last argument.
1426 ** byte specifiers with zero size and position no longer cause
1427 an error during type derivation.
1428 ** bignum multiplication on the Alpha platform now returns the
1430 * porting: The system now builds on SuSE AMD64, although it still
1431 generates a 32-bit binary.
1432 * .fasl file incompatibility: The fasl file version number has
1433 been incremented (because of the changes to internal compiler
1434 data structures referred to above).
1436 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1437 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1438 more accurately, on the Darwin kernel running on PowerPC hardware.
1439 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1440 * Compiler code deletion notes now signal a condition of type
1441 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1442 an associated MUFFLE-WARNING restart.
1443 * The compiler now performs limited argument count validation of
1444 constant format strings in FORMAT, and where appropriate in ERROR,
1445 CERROR and WARN. (thanks to Gerd Moellmann)
1446 * New ASDF-INSTALL contrib can be used for automatic download and
1447 installation of third-party Lisp code from CCLAN or other sites
1449 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1450 which forces another thread to execute a function supplied by the
1452 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1453 now accept and act upon their :ELEMENT-TYPE keyword argument.
1454 (reported by Martin Atzmueller, Edi Weitz)
1455 * bug fix: FILE-POSITION now accepts position designators up to
1456 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1457 is the greater. (thanks to Patrik Nordebo)
1458 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1459 Kalle Olavi Niemitalo)
1460 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1461 printable. (reported by Eric Marsden)
1462 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1463 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1464 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1465 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1466 (thanks to Stig Sandoe)
1467 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1468 UNREAD-CHAR now correctly includes the unread character in the
1469 target sequence. (thanks to Gerd Moellmann)
1470 * bug fix in threaded builds: the system can now be suspended and
1471 resumed by shell job control with minimal disruption.
1472 * bug fixes in times and timezones >2038AD
1473 * better handling of "where is GNU make?" problem in build scripts
1474 (thanks to Nikodemus Siivola)
1475 * new optimization: inside a named function any reference to a
1476 function with the same name is considered to be a self-reference;
1477 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1478 optimization quality.
1479 * new optimization on x86: logical functions and + now have
1480 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1481 used when the result is truncated to 32 bits.
1482 * VALUES declaration is partially enabled.
1483 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1484 * fixed some bugs revealed by Paul Dietz' test suite:
1485 ** The system now obeys the constraint imposed by
1486 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1487 types form a lattice under type intersection.
1488 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1489 ** ASSOC now ignores NIL elements in an alist.
1490 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1491 and (1+ MOST-POSITIVE-FIXNUM) answers.
1492 ** The addition of a method with invalid qualifiers to a generic
1493 function does not cause an error to be signalled immediately;
1494 a warning is signalled, and the error is generated only on
1495 calling the generic function.
1496 * changed .fasl file version number, in part to add type codes for
1497 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1498 obscure ANSI requirements
1500 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1501 * fixed bug 148: failure to inline-expand a local function left
1502 garbage, confusing the compiler.
1503 * fixed bugs 3cd: structure slot readers perform type check if the
1504 slot can have an invalid value (i.e. it is either not initialized
1505 or can be written with a less specific slot writer).
1506 * bug fix: the compiler now traps array references to elements off
1507 the end of an array; previously, the bounds checking in some
1508 circumstances could go off-by-one.
1509 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1511 * type declarations for array element types now obey the description
1512 on the CLHS page "Declaration TYPE", as per discussions on
1513 sbcl-help around 2003-05-08. This means that a declaration
1514 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1515 declaration, all references to BAR will be asserted or assumed
1516 (with THE, so dependent on compiler policy) to involve objects of
1517 type FOO. Note that no such declaration is implied in
1518 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1519 * declared types of functions from the "Conditions"
1520 chapter. (reported by Paul Dietz)
1521 * bug fix: CERROR accepts a function as its first argument.
1522 * bug fix: NTH an NTHCDR accept a bignum as index
1523 arguments. (reported by Adam Warner)
1524 * optimization: character compare routines now optimize comparing
1525 against a constant character. (reported by Gilbert Baumann)
1526 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1527 argument now works properly on the MIPS platform.
1528 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1529 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1530 declared to have a functional type, does not cause an error
1532 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1533 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1534 * fixed bug: if last continuation of a deleted block has a
1535 destination, this destination should be deleted too. (reported by
1537 * fixed a bug in the bootstrap process: the host compiler's values
1538 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1539 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1540 test case from Patrik Nordebo)
1541 * improved the ability of the disassembler on the PPC platform to
1542 provide helpful disassembly notes.
1543 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1544 the class in more cases than previously.
1545 * bug fix: FILE-POSITION now understands :START and :END for
1546 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1547 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1548 8) data. (thanks to David Lichteblau)
1549 * bug fix: it is possible to add a method to a generic function
1550 without lambda list.
1551 * bug fix: reader failed to signal END-OF-FILE inside an
1552 object representation. (reported by Nikodemus Siivola)
1553 * fixed some bugs revealed by Paul Dietz' test suite:
1554 ** LAST and [N]BUTLAST should accept a bignum.
1555 ** condition slot accessors are methods.
1556 ** (VECTOR NIL) is a subtype of STRING.
1558 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1559 * minor incompatible change: some nonsensical specialized lambda
1560 lists (used in DEFMETHOD) which were previously ignored now signal
1562 * minor incompatible change: the system is now aware of the types of
1563 variables in the COMMON-LISP package, and will signal errors for
1564 most violations of these type constraints (where previously they
1565 were silently accepted).
1566 * minor incompatible change: COMPILE-FILE now uses the freedom
1567 afforded (ANSI 3.2.2.3) to use derived function types for
1568 functions defined in the same file. This also permits the system
1569 to warn on static type mismatches and function
1570 redefinition. (Currently it does not work with high DEBUG level.)
1571 * minor incompatible change: VALUES declaration is disabled.
1572 * When issuing notes, the compiler now signals a condition of type
1573 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1574 restart for use in user handlers. It is expected that the
1575 COMPILER-NOTE condition will eventually become a condition
1576 supertype to a hierarchy of note types, which will then be
1577 handleable in a similar fashion. However, at the moment, no such
1578 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1579 but it's an implementation detail, not a classification for the
1581 * Changes in type checking closed the following bugs:
1582 ** type checking of unused values (192b, 194d, 203);
1583 ** template selection based on unsafe type assertions (192c, 236);
1584 ** type checking in branches (194bc).
1585 * A short form of VALUES type specifier has ANSI meaning (it has
1586 increased the number of situations when SBCL cannot perform type
1588 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1589 keywords or constants is permissible.
1590 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1591 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1592 classes. (thanks to Antonio Martinez)
1593 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1594 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1595 argument to a pretty-print stream. Instead, it leaves any such
1596 operations to DESCRIBE-OBJECT methods.
1597 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1599 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1600 lambda lists. (thanks to David Lichteblau)
1601 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1602 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1603 (thanks to Gerd Moellmann)
1604 * fixed bug 246: increased compilation speed of long
1605 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1607 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1609 * DEFCONSTANT now throws a condition of type
1610 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1611 constant to a non-EQL value; CONTINUE and ABORT restarts
1612 respectively change and preserve the value.
1613 * fixed bug 63: The code walker, part of the implementation of CLOS,
1614 is now better at handling symbol macros.
1615 * bug fix: There is no longer an internal implementation type named
1616 CL:LENGTH. (reported by Raymond Toy)
1617 * bug fix: In macro-like defining macros/special operators the
1618 implicit block does not enclose the lambda list.
1619 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1620 enclosed in parentheses) are not suitable as type specifiers, and
1621 their use properly signals an error now.
1622 * bug fix: An argument count mismatch for a type specifier in code
1623 being compiled no longer causes an unhandled error at compile
1624 time, but signals a compile-time warning.
1625 * fixed simple vector readable printing
1626 * bug fix: DESCRIBE takes more care over whether the class
1627 precedence list slot of a class is bound before accessing it.
1628 (reported by Markus Krummenacker)
1629 * bug fix: FORMATTER can successfully compile pretty-printer format
1630 strings which use variants of the ~* directive inside.
1631 * bug fix: SEARCH now applies its TEST predicate to the elements of
1632 the arguments in the correct order. (thanks to Wolfhard Buss)
1633 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1634 in type inference. (thanks to Robert E. Brown)
1635 * bug fix: Reading in symbols with an explicit package name of ""
1636 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1637 * fixed some bugs revealed by Paul Dietz' test suite:
1638 ** NIL is now allowed as a structure slot name.
1639 ** Arbitrary numbers, not just REALs, are allowed in certain
1640 circumstances in LOOP for-as-arithmetic clauses.
1641 ** Multiple class redefinitions before slot access no longer
1642 causes a type error.
1643 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1644 association between the name and a class.
1645 ** Generic functions with non-standard method-combination and over
1646 five methods all of which return constants no longer return NIL
1647 after the first few invocations. (thanks to Gerd Moellmann)
1648 ** CALL-NEXT-METHOD with no arguments now passes the original
1649 values of the arguments, even in the presence of assignment.
1650 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1652 ** DISASSEMBLE works with closures and funcallable instances.
1653 ** ADD-METHOD now returns the generic function, not the new method.
1654 ** FIND-METHOD signals an error if the lengths of the specializers
1655 is incompatible with the generic function, even if the ERRORP
1657 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1658 which its argument is a member.
1659 ** DEFCLASS only redefines the class named by its class-name
1660 argument if that name is the proper name of the class;
1661 otherwise, it creates a new class.
1662 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1663 of the UNBOUND-SLOT condition to the name of the slot.
1664 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1665 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1666 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1667 SLOT-MAKUNBOUND in the specified fashion.
1669 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1670 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1671 cross-compilation host. As a consequence, we can now bootstrap our
1672 way up to SBCL starting with a bare gcc toolchain and human-readable
1673 source code (first the source to CLISP, then the source to SBCL).
1674 * A contributed module containing a partial implementation of the
1675 simple-streams interface has been included. (thanks to Rudi
1677 * A contributed module implementing the RFC1321 Message Digest
1678 Algorithm, known as MD5, has been included.
1679 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1680 no longer has any effect, as the code controlled by this feature
1681 has been deleted. (As far as we know, no-one has ever built using
1682 this feature, and its semantics were confused in any case).
1683 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1684 work on conditions (as required by the ANSI specification),
1685 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1686 expected behaviour on conditions. Users should note, however,
1687 that such behaviour is not required by the ANSI specification,
1688 and so use of this behaviour may render their code unportable.
1689 * fixed some bugs revealed by Paul Dietz' test suite:
1690 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1692 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1693 ** SXHASH on condition objects no longer returns NIL.
1694 ** :ALLOCATION :CLASS slots are better treated; their values are
1695 updated on class redefinition, and initforms inherited from
1696 superclasses are applied.
1697 ** REMOVE-METHOD returns its generic function argument even when
1698 no method was removed.
1699 ** SHARED-INITIALIZE now initializes the values of the requested
1700 slots, including those with :ALLOCATION :CLASS.
1701 ** ALLOCATE-INSTANCE now works on structure classes defined via
1702 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1704 ** SLOT-EXISTS-P now works on conditions, as well as structures
1706 ** MAKE-LOAD-FORM now has the required methods on
1707 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1708 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1709 keyword, and now implements the SLOT-NAMES argument.
1710 ** methods with &OPTIONAL arguments no longer allow too many
1711 arguments to be passed in the call without error.
1712 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1713 option is consistent with the required arguments of the generic
1714 function lambda list.
1715 * bug fix: REQUIRE accepts a string designator. (Thanks to
1717 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1718 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1719 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1720 * bug fix: The compiler now checks for duplicated variables in macro
1722 * bug fix: SETQ on globals returns the correct value.
1723 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1724 not a COMPILER-ERROR (followed by some other strange error on
1725 choosing the CONTINUE restart).
1726 * bug fix: make.sh and friends are now more consistent in the way that
1727 they look for GNU "make".
1729 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1730 * experimental native threads support (on x86 Linux >=2.4 only).
1731 This is not compiled in by default: you need to add :SB-THREAD to
1732 the target features. See the "Beyond ANSI" chapter of the manual
1734 * fix for longstanding nonANSIism: The old distinction between
1735 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1736 The return value from CL:FIND-CLASS is now a CLOS class, and
1737 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1738 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1739 * An interface to the MetaObject Protocol, as described in Kiczales,
1740 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1741 MIT Press, 1991, is available from the SB-MOP package.
1742 * incompatible change: the SB-PCL package should now be considered
1743 a private implementation detail, and no longer a semi-private MOP
1745 * minor incompatible change: due to rearrangement for threads, the
1746 control stack and binding stack are now allocated at arbitrary
1747 addresses instead of being hardcoded per-port. Users affected by
1748 this probably have to be doing advanced things with shared
1749 libraries, and will know who they are.
1750 * minor incompatible change: Previously, all --eval forms used were
1751 processed with READ before any of them were processed with EVAL.
1752 Now each --eval form is processed with both READ and EVAL before
1753 the next --eval form is processed. (Thus package operations like
1754 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1755 work as the user might reasonably expect.)
1756 * minor incompatible change: *STANDARD-INPUT* is now only an
1757 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1759 * minor incompatible change: Y-OR-N-P is now character-oriented,
1760 not line oriented. Also, YES-OR-NO-P now works without errors.
1761 (thanks to Antonio Martinez)
1762 * sb-aclrepl module improvements: an integrated inspector, added
1763 repl features, and a bug fix to :trace command.
1764 * Known functions, which cannot be open coded by the backend, are
1765 considered to be able to check types of their arguments. (fixing
1766 a bug report by Nathan J. Froyd)
1767 * fixed a bug in computing method discriminating functions: It is
1768 now possible to define methods specialized on classes which have
1769 forward-referenced superclasses. (thanks to Gerd Moellmann)
1770 * fixed evaluation order in optional entries (reported by Gilbert
1772 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1773 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1774 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1775 required-by-AMOP NAME argument, as well as CLASS and
1776 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1777 * fixed bug 20: DEFMETHOD can define methods using names that are
1778 not the proper names of classes to designate class specializers.
1779 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1780 Unix file descriptors, instead of blowing up. (thanks to Antonio
1782 * Garbage collection refactoring: user-visible change is that a
1783 call to the GC function during WITHOUT-GCING will not do garbage
1784 collection until the end of the WITHOUT-GCING. If you were doing
1785 this you were probably losing anyway.
1786 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1787 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1788 TYPEP the latter but not the former.
1789 * The compiler issues a full WARNING for calls to undefined functions
1790 with names from the CL package.
1791 * MAP-INTO for a vector destination is open coded. (reported by
1792 Brian Downing on c.l.l)
1793 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1794 documentation string.
1795 * fixed some bugs revealed by Paul Dietz' test suite:
1796 ** COPY-ALIST now signals an error if its argument is a dotted
1798 ** Condition slots are now accessed more correctly in the presence
1799 of multiple initargs for a given slot.
1800 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1801 exclude restarts of the same name associated with a different
1803 ** DEFCLASS of forward-referenced classes with another
1804 forward-referenced class in the superclasses list no longer
1806 ** Condition slots are now initialized once each, not multiple
1807 times. (thanks to Gerd Moellmann)
1808 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1810 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1811 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1812 arguments contain duplicated elements.
1813 ** RESTART-CASE understands local macros.
1814 ** RESTART-CASE associates exactly its own restarts with a condition.
1815 ** ENDP in safe mode checks its argument to be of type LIST.
1816 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1817 in question is unbound.
1818 ** Optimized MAKE-INSTANCE functions no longer cause internal
1819 assertion failures in the presence of duplicate initargs.
1820 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1821 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1822 propagated even in the ctor optimized implementation of
1824 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1826 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1827 * a better implementation of SXHASH on (simple) bit vectors,
1828 measured both in execution speed and in distribution of results
1829 over the positive fixnums, has been installed. Likewise, a better
1830 implementation of EQUAL for simple bit vectors is now available.
1831 * fixed CEILING optimization for a divisor of form 2^k.
1832 * fixed bug 240 (emitting extra style warnings "using the lexical
1833 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1834 by Antonio Martinez)
1835 * fixed SXHASH, giving different results for NIL depending on type
1836 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1837 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1838 variable. (found by Rolf Wester)
1839 * SBCL does not ignore type declarations for special
1840 variables. (reported by rif on c.l.l 2003-03-05)
1841 * some bug fixes in contrib/sb-aclrepl/
1842 * fixed some bugs revealed by Paul Dietz' test suite:
1843 ** a bug in the CONS type specifier, whereby the CAR and CDR
1844 types got intertwined, has been fixed;
1845 ** the type system is now able to reason about the interaction
1846 between INTEGER and RATIO types more completely;
1847 ** APPEND, [N]REVERSE and NRECONC check that those their
1848 arguments, which must be proper lists, are really so;
1849 ** An array specialized to be unable to hold elements has been
1850 implemented, as required -- yes, really -- by ANSI;
1851 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1852 on malformed property lists;
1854 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1855 * incompatible packaging change: in line with Unix convention,
1856 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1857 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1858 * REQUIRE and PROVIDE are now optionally capable of doing something
1859 useful. See the documentation string for REQUIRE.
1860 * infrastructure for a managed SBCL contrib system: contributed
1861 modules in this release include:
1862 ** the ASDF system definition facility;
1863 ** an interface to the BSD Sockets API;
1864 ** an ACL-like convenience interface to the repl;
1865 (thanks to Kevin Rosenberg)
1866 ** an implementation of ROTATE-BYTE, with efficient implementation
1868 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1869 gives a closer approximation to the right answer than previously.
1870 (thanks to Raymond Toy)
1871 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1872 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1873 optional environment arguments, as required by ANSI.
1874 * fixed bugs in other functions taking environment objects, allowing
1875 calls with an explicit NIL environment argument to be compiled
1877 * fixed bug 228: primary return values from
1878 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1879 COMPILE or FUNCTION.
1880 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1881 :TYPE will no longer signal errors on innocuous objects.
1882 * fixed bug 231b: SETQ is better at respecting type declarations in
1883 the lexical environment.
1884 * fixed a bug in DEFCLASS: classes named by symbols with no or
1885 unprintable packages can now be defined.
1886 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1887 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1888 * fixed compiler failure related to checking types of functions.
1889 (reported by Robert E. Brown)
1890 * the compiler is now much more consistent in its error-checking
1891 treatment of bounding index arguments to sequence functions: in
1892 (SAFETY 3) code, errors will be signalled in almost all cases if
1893 invalid sequence bounding indices are passed to functions defined
1894 by ANSI to operate on sequences.
1895 * fixed a bug in the build procedure: documentation of SBCL-specific
1896 packages is now preserved and available in the final Lisp image.
1897 * lifted FDEFINITION lookup out of loops in the implementation of
1898 many list operations. (thanks to Robert E. Brown)
1899 * fixed a bug in the reader: the #n# reader macro now works for
1900 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1901 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1902 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1903 E. Brown and Tony Martinez respectively)
1904 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1905 SLOT-BOUNDP: in particular, it is now able to optimize them much
1906 better, and is now not vulnerable to having packages renamed.
1907 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1908 always called when a slot is not present in an instance. (thanks
1910 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1911 longer signal an error on unreading a character following EOF on
1912 the previous constituent stream. (thanks to Tony Martinez)
1913 * fixed some bugs revealed by Paul Dietz' test suite:
1914 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1915 not just nonnegative fixnums;
1916 ** the logical bit-array operators such as BIT-AND now accept an
1917 explicit NIL for their "opt-arg" argument (to indicate a
1918 freshly-consed result bit-array);
1919 ** ELT now signals an error on an invalid sequence index in safe
1921 ** the type system is now cleverer about negations of numeric
1922 types, and consequently understands the BIGNUM and RATIO types
1924 ** the type system is now cleverer about the interaction between
1925 INTEGER and RATIO types: while bugs still remain, many more
1926 cases are accurately computed;
1927 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1928 if it is in the last clause;
1929 ** CONSTANTLY now correctly returns a side-effect-free function in
1931 ** DECLARE is no longer treated as a special-operator; in
1932 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1933 * incremented fasl file version number due to the change in the
1934 DEFSTRUCT-SLOT-DESCRIPTION structure.
1936 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1937 * minor incompatible change: code processed by the "interpreter" or
1938 EVAL now has a compilation optimization policy of (DEBUG 2)
1939 (changed from (DEBUG 1)) to improve debuggability of interactive
1940 development, and to allow the use of the debug RETURN command in
1942 * an experimental implementation of the RETURN command for the
1943 debugger has been included. (thanks to Frederik Kuivinen)
1944 * fixed bug 62: constraints were not propagated into a loop.
1945 * fixed bug in embedded calls of SORT (reported and investigated by
1947 * fixed some bugs revealed by Paul Dietz' test suite:
1948 ** printing and reading of arrays with some dimensions having
1949 length 0 (thanks to Gerd Moellmann);
1950 ** BOA constructor with &AUX argument without a default value does
1951 not cause a type error;
1952 ** CONSTANTP now returns true for all self-evaluating objects.
1954 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1955 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1956 accessors that are related by inheritance, as specified in the
1957 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1958 Valtteri Vuorikoski)
1959 * The compiler is now able to inline functions that were defined in
1960 a complex lexical environment (e.g. inside a MACROLET).
1961 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1963 * Support for the upcoming FreeBSD-5.0 release has been included.
1964 (thanks to Dag-Erling Smorgrav)
1965 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1966 effect when it is not in a toplevel context.
1967 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1968 stand a better chance of being correct. (thanks to Gerd
1970 * fixed bug in COERCE, which now signals an error on coercing a
1971 rational to a bounded real type which excludes the expected
1973 * The compiler is now able to derive types more accurately from the
1974 COERCE and COMPILE functions.
1975 * fixed bug 223: functional binding is considered to be constant
1976 only for symbols in the CL package.
1977 * fixed bug 231: SETQ did not check the type of a variable being set
1978 (reported by Robert E. Brown)
1979 * A new optimization for MAKE-INSTANCE has been included, fixing
1980 various bugs (including relating to :ALLOCATION :CLASS slots and
1981 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1983 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1984 ** As required by ANSI, LOOP now disallows anonymous collection
1985 clauses such as COLLECT I in conjunction with aggregate boolean
1986 clauses such as THEREIS (= I 1);
1987 ** LOOP now signals an error when any variable is reused in the
1988 same loop (including the potentially useful construct analogous
1989 to WITH A = 1 WITH A = (1+ A);
1990 ** IT is only a special loop symbol within the first clause of a
1991 conditional loop clause;
1992 ** LOOP with a typed iteration variable over a hashtable now
1993 signals a type error iff it should.
1994 * fixed some other bugs revealed by Paul Dietz' test suite:
1995 ** FILE-STREAM now names the class previously known as FD-STREAM;
1996 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1997 argument) no longer signals an error;
1998 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1999 of the slot symbol, rather than using the current package
2000 ((:CONC-NAME "") continues to intern the slot's name in the
2002 * incremented fasl file version number, because of the incompatible
2003 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2004 of the new implementation of DEFINE-COMPILER-MACRO.
2006 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2007 * Support for building SBCL for MIPS platforms running in
2008 little-endian mode has now been checked in, and basic
2009 functionality on said platforms verified.
2010 * minor incompatible change: PCL now records the pathname of a file
2011 in which methods and the like are defined, rather than its
2013 * minor incompatible change: TRUENAME now considers the truename of
2014 a file naming a directory to be the pathname with :DIRECTORY
2015 component indicating that directory.
2016 * minor incompatible change: a NAMED clause in the extended form of
2017 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2018 reason for the previous behaviour is unclear.
2019 * more systematization and improvement of CLOS and MOP conformance
2020 in PCL (thanks to Gerd Moellman and Pierre Mai):
2021 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2023 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2024 primary methods with no specializers;
2025 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2027 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2028 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2029 FORWARD-REFERENCED-CLASSes; error reporting on
2030 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2032 ** SXHASH on CLOS instances now uses a slot internal to the
2033 instance to return different numbers on distinct instances,
2034 while preserving the same return value through invocations of
2036 ** DEFMETHOD signals errors when methods with longer incongruent
2037 lambda lists are added to generic functions;
2038 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2039 CLASS, as specified in AMOP;
2040 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2041 on the order returned by the primary method for classes of
2042 class STANDARD-CLASS;
2043 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2044 * fixed some bugs shown by Paul Dietz' test suite:
2045 ** DOLIST puts its body in TAGBODY;
2046 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2048 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2049 value producing form;
2050 ** if more variables are given to PROGV than values, extra
2051 variables are bound and made to have no value;
2052 ** NSUBSTITUTE on list arguments gets the right answer with
2054 ** ELT signals an error of type TYPE-ERROR when the index argument
2055 is not a valid sequence index;
2056 ** LOOP signals (at macroexpansion time) an error of type
2057 PROGRAM-ERROR when duplicate variable names are found;
2058 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2059 ** FUNCALL of special-operators now cause an error of type
2061 ** PSETQ now works as required in the presence of side-effecting
2062 symbol-macro places;
2063 ** NCONC accepts any object as its last argument;
2064 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2066 ** loop-for-as-package does not require a package to be explicitely
2068 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2070 * fixed bug 166: compiler preserves "there is a way to go"
2071 invariant when deleting code.
2072 * fixed bug 172: macro lambda lists with required arguments after
2073 &REST arguments now cause an error to be signalled. (thanks to
2075 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2076 bug. (thanks to Matthew Danish)
2077 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2079 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2080 arguments are lexically rebound. (thanks to Gerd Moellmann and
2082 * fixed bug 194: error messages are now more informative when there
2083 is no primary method applicable in a call to a generic
2084 function. (thanks to Gerd Moellmann)
2085 * fixed bug in command line argument checking (thanks to Julian
2087 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2088 (thanks to Matthew Danish)
2089 * incremented fasl file version number, because of the
2090 SXHASH-related changes in the layout of CLOS data structures
2092 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2093 * minor incompatible change: The runtime (the Unix executable named
2094 "sbcl") is now much pickier about the .core files it will load.
2095 Essentially it now requires .core files to descend from the same
2096 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2097 as the runtime does. (The intent is to prevent the crashes which
2098 can occur, and which can even be reported as mysterious failures,
2099 when people patch the sources or change the build parameters
2100 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2101 sbcl and .core files.)
2102 * fixed bug: VALUES-LIST is no longer optimized away.
2103 * fixed bug 142: The FFI conversion of C string values to Lisp
2104 string values no longer conses excessively. (thanks to Nathan
2105 Froyd porting Raymond Toy's fix to CMU CL)
2106 * began to systematize and improve MOP conformance in PCL (thanks to
2107 Nathan Froyd, Gerd Moellman and Pierre Mai):
2108 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2110 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2111 ** FINALIZE-INHERITANCE is now called on class finalization;
2112 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2113 argument precedence order.
2114 * fixed bug 202: The compiler no longer fails on functions whose
2115 derived types contradict their declared type.
2116 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2117 so it can be non-toplevel.
2118 * The fasl file version number has changed (because of the new
2119 implementation of DEFMACRO).
2120 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2121 safe code, that any length requirement by their type-specifier
2122 argument is valid. The exceptions to this are described in bug
2124 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2125 functions now check the types of their inputs as required by ANSI.
2126 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2127 introduced symbol is DECLAREd to be SPECIAL.
2128 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2129 * fixed bug: :COUNT argument to sequence functions may be negative
2130 * fixed bug: body of DO-SYMBOLS may contain declarations
2131 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2132 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2133 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2134 symbol macro only once
2135 * fixed printing of call frame when argument list is unavailable
2136 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2137 * compiler no longer signals WARNING on unknown keyword
2140 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2141 * A beta-quality port to the mips architecture running Linux,
2142 based on the old CMUCL backend, has been made. It has been tested
2143 on a big-endian kernel, and works sufficiently well to be able to
2144 rebuild itself; it has not been tested in little-endian mode.
2145 * fixed an inconsistency between gencgc.c and purify.c which made
2146 dumping/loading .core files unreliable
2147 * fixed bug 120a: The compiler now deals correctly with IFs where
2148 the consequent is the same as the alternative, instead of
2149 misderiving the return type. (thanks to Alexey Dejneka)
2150 * fixed bug 113: Logical pathnames are now dumpable (the logical
2151 host is resolved at load-time, throwing an error if it is not
2153 * fixed bug 174: FORMAT's error message is slightly clearer when a
2154 non-printing character is used in a format directive.
2155 * fixed several bugs in compiler checking of type declarations, i.e.
2156 violations of the Python "declarations are assertions" principle
2157 (thanks to Alexey Dejneka)
2158 * fixed several bugs in PCL's error checking (thanks to Gerd
2160 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2162 * fixed bug in compilation of functions as first class values
2163 (thanks to Antonio Martinez-Shotton)
2164 * The compiler's handling TYPE-ERRORs which it can prove will
2165 inevitably happen at runtime has been cleaned up and corrected
2166 in several ways. (thanks to Alexey Dejneka)
2167 * improved argument type checking for various basic arithmetic
2168 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2169 lavished on them in the past that they can be compiled in many
2170 ways in different special cases
2171 * fixed bug 181: compiler checks validity of user supplied type
2173 * cleaned up code flushing in optimization: Function calls which
2174 should signal errors for safety purposes (e.g. which ANSI says
2175 should signal errors when their arguments are of incorrect type)
2176 are no longer optimized away.
2177 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2178 * incremented fasl file version number, because changes in the
2179 implementation of sequence functions like COERCE caused
2180 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2181 in old inline expansions) to become undefined. (Actually these
2182 changes were later undone, so we might very well be binary
2183 compatible with 0.7.7 after all, but leaving the version number
2184 incremented seemed like the simplest and most conservative
2187 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2188 * An alpha-quality port to the parisc architecture running Linux,
2189 based on the old CMUCL backend, has been made. This, even more so
2190 than the other backends, should be considered still a work in
2191 progress; known problems include that the Linux kernel in 64-bit
2192 mode does not propagate the correct sigcontext structure to
2193 userspace, and consequently SBCL on a parisc64 kernel will not
2195 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2196 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2197 suppressed.) Also now that the compiler is looking at declarations
2198 in the environment, it checks optimization declarations as well,
2199 and suppresses inlining when (> DEBUG SPEED).
2200 * More fixes have been made to treatment of floating point exception
2201 treatment and other Unix signals. In particular, floating point
2202 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2203 * The detection and handling of control stack exhaustion (infinite
2204 or very deeply nested recursion) has changed. Stack exhaustion
2205 detection is now done by write-protecting pages at the OS level
2206 and applies at all optimization settings; when found, a
2207 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2208 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2209 be caught using IGNORE-ERRORS.
2210 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2211 correctly when transforming recursive LABELS functions to LETs.
2212 (thanks to Alexey Dejneka)
2213 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2214 that are names of constants or global variables.
2215 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2216 alien routines with docstrings.
2217 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2218 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2220 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2221 (thanks to Eric Marsden)
2222 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2223 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2224 * Bug fix: The SPARC backend can now compile functions involving
2225 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2226 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2227 to a functions expecting a PATHNAME-DESIGNATOR.
2228 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2229 lambda lists. (thanks to Alexey Dejneka)
2230 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2231 functions so that EXPORTing the name of the class doesn't cause
2232 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2233 to Antonio Martinez for reporting this)
2234 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2235 constant-folded without failing an assertion. (thanks to Einar
2236 Floystad Dorum for reporting this)
2237 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2238 types are now dealt with more correctly by the compiler.
2239 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2240 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2241 behaviour analogous to RENAME-FILE. This puts its behaviour more
2242 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2244 * The fasl file version number has changed again. (because of the
2245 bug fix involving the names of PCL MAKE-INSTANCE functions)
2247 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2248 * bug fix: Floating point exceptions are treated much more
2249 consistently on the x86/Linux and PPC/Linux platforms.
2250 * Array initialization with :INITIAL-ELEMENT is now much faster for
2251 cases when the compiler cannot open code the array creation, but
2252 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2253 array accesses have also seen a speed increase.
2254 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2255 specified. (This was at the root of some bad interactions between
2256 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2258 * bug fix: Internal error arguments for undefined functions are now
2259 computed correctly on the PPC/Linux platform.
2260 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2261 Raymond Toy's patch for CMU CL)
2262 * Support for the Solaris 9 operating environment has been included
2263 (thanks to Daniel Merritt)
2264 * A very ugly but hopefully complete draft of the missing FFI chapter
2265 of the manual has been created by reformatting the corresponding
2266 CMU CL manual chapter into (currently very ugly and incoherent)
2267 DocBook and bringing it up to date for SBCL behavior. Thus, the
2268 manual is now essentially complete, at least by my extreme
2269 once-and-only-once standards, whereby it's acceptable to refer to
2270 the doc strings of SB-EXT functions as the primary documentation.
2271 * The fasl file version number has changed again, due to cleanup of
2272 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2273 is no longer a static symbol.)
2275 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2276 * SBCL now builds with OpenMCL (version 0.12) as the
2277 cross-compilation host; also, more progress has been made toward
2278 bootstrapping under CLISP.
2279 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2281 * bug 158 fixed: The compiler can now deal with integer loop
2282 increments different from 1; fixing this turned out also to fix
2284 * bug 169 fixed: no more bogus warnings about using lexical bindings
2285 despite the presence of perfectly good SPECIAL declarations (thanks
2286 to David Lichteblau)
2287 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2288 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2289 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2291 * bug 180 fixed: Method combination specifications no longer ignore
2292 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2293 * bug fix: Structure type predicate functions now check their argument
2294 count as they should.
2295 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2296 correctly. (thanks to Pierre Mai)
2297 * minor incompatible change: The --noprogrammer option is deprecated
2298 in favor of the new --disable-debugger option, which is very similar.
2299 (The major difference is that it takes effect at a slightly different
2300 time at startup, causing handling of errors in --sysinit and
2301 --userinit files will be affected differently.) The
2302 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2303 been added to allow this functionality to be controlled from ordinary
2304 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2305 maintainers, who might want to run non-interactive scripts to
2306 build SBCL cores which will later be used interactively.)
2307 * minor incompatible change: The LOAD function no longer, when given
2308 a wild pathname to load, loads all files matching that pathname.
2309 Instead, an error of type FILE-ERROR is signalled.
2311 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2312 * bug 147 fixed: The compiler preserves its block link/count
2313 invariants more correctly now so that it doesn't crash. (thanks
2315 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2317 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2318 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2319 no-value-for-this-character as NIL (as specified by ANSI).
2320 * HOST-NAMESTRING on physical pathnames now returns a string that is
2321 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2322 (thanks to Christophe Rhodes)
2323 * The Alpha port handles icache flushing more correctly. (thanks to
2325 * More progress has been made toward bootstrapping under CLISP. (thanks
2326 to Christophe Rhodes)
2327 * The fasl file format has changed again, because dynamic loading
2328 on OpenBSD (which has non-ELF object files) motivated some cleanups
2329 in the way that foreign symbols are transformed and passed around.
2330 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2331 is no longer treated as whitespace by the reader, but instead as
2332 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2333 |A
\7fB|, instead of A as it used to.
2335 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2336 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2337 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2338 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2339 this as of 0.7.1.45, but was left out of the previous news section
2340 (thanks to Dan Barlow)
2341 * SBCL now runs on the Solaris operating system on SPARC architectures
2342 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2343 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2344 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2345 * SPARC backend cleanups, allowing builds of cores optimized for V8
2346 and V9 SPARCS, and also emission of code targeted to a particular
2347 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2349 * SBCL is closer to bootstrapping under CLISP, thanks to various
2350 fixes by Christophe Rhodes.
2351 * The fasl file format has changed again, to allow the compiler's
2352 INFO database to support symbol macros.
2353 * The user manual (in doc/) is formatted into HTML more nicely.
2354 (thanks to coreythomas)
2355 * The system is smarter about SUBTYPEP relationships, especially
2356 those involving NOT types (including types such as ATOM which are
2357 represented internally using NOT types). Thus SUBTYPEP is less
2358 likely to return (VALUES NIL NIL) in general, and in particular
2359 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2361 * The fasl file format has changed again, because the internal
2362 representation of types now includes a new slot to support the new
2363 SUBTYPEP-of-NOT-types logic.
2364 * (not a change in the main branch of SBCL, but a related prototype
2365 which can hopefully be merged into the main branch of SBCL in the
2366 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2367 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2368 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2369 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2370 dispatch macro character combinations. (thanks to Alexey Dejneka)
2371 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2372 that superficially look like logical namestrings correctly.
2373 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2375 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2376 default supplied-p) for &optional and &key arguments. (thanks to
2379 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2380 * incompatible change: The compiler is now less aggressive about
2381 tail call optimization, doing it only when (> SPACE DEBUG) or
2382 (> SPEED DEBUG). (This is an incompatible change because there are
2383 programs which relied on the old CMU-CL-style behavior to optimize
2384 away their unbounded recursion which will now die of stack overflow.)
2385 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2386 for non-GENCGC systems has been increased to 20M (since that
2387 seems much closer to the likely performance optimum for modern
2388 systems than the old 4M value was)
2389 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2390 and *DEBUG-PRINT-LEVEL*
2391 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2392 of CMU CL's support for SPARC, and various endianness and other
2393 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2394 * new syntactic sugar for the Unix command line: --load foo.bar is now
2395 an alternate notation for --eval '(load "foo.bar")'.
2397 ** The system now detects stack overflow and handles it gracefully,
2398 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2399 optimization settings. (This is a good thing in general, and
2400 its introduction in this version should be particularly timely
2401 for anyone whose code fails because of suppression of tail
2403 ** The system now hunts for the C variable "environ" in a more
2404 devious way, to avoid segfaults when the C library version differs
2405 between compile time and run time. (thanks to Christophe Rhodes)
2406 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2407 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2408 ** The compiler no longer issues bogus style warnings for undefined
2409 classes in the same source file as the DEFCLASSes which defined
2410 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2412 ** fixes in CONDITION class precedence list for undefined function
2413 errors (thanks to Alexei Dejneka)
2414 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2415 correctly. (thanks to Dan Barlow)
2416 ** portability fixes aiming at bootstrapping under CLISP (thanks
2417 to Dave McDonald and Christophe Rhodes)
2418 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2419 ** fixes in type translation and and type inference (thanks to
2421 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2422 ** various fixes in the new ports (thanks to Dan Barlow)
2423 * several changes related to debugging:
2424 ** suppression of tail recursion, as noted above
2425 ** stack overflow detection, as noted above
2426 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2427 is now the default. (For some time encapsulation has been more
2428 reliable than the breakpoint-based :ENCAPSULATE NIL
2429 implementation, at least on X86 systems; and I just noticed that
2430 encapsulation also seems closer to the spirit of the ANSI
2433 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2435 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2436 up properly again. (There was a packaging bug in 0.7.0 which
2437 left their definitions in SB-SYS::LOAD-FOREIGN and
2438 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2439 vital for most things which interface to C-level interfaces,
2440 like extensions working with sockets or databases or
2441 Perl-compatible regexes or whatever, and the need to fix
2442 this bug is the main reason that 0.7.1 was released so
2444 ** DEFGENERIC is now choosier about the methods it redefines, so that
2445 reLOADing a previously-LOADed file containing DEFGENERICs does
2446 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2447 cycle now works as it should. (thanks to Alexey Dejneka)
2448 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2449 fixed by Christophe Rhodes. (He actually submitted this patch
2450 months ago, and I delayed until after 0.7.0.)
2451 ** Bug 111 (internal compiler confusion about runtime checks on
2452 FUNCTION types) was fixed by Alexey Dejneka.
2453 * Some internal cleanups (getting rid of variables which aren't
2454 needed now that the byte interpreter is gone) caused the fasl
2455 file format number to change again.
2457 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2458 * major incompatible change: The default fasl file extension, i.e. the
2459 default extension for files produced by COMPILE-FILE, has changed
2460 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2462 ** There are many changes in the implementation of the compiler.
2463 SBCL is now essentially a compiler-only implementation of ANSI
2464 Common Lisp. EVAL still "interprets" a few special cases, but
2465 almost all the interesting cases are handled by creating
2466 a LAMBDA expression, calling COMPILE on it, then calling
2467 FUNCALL on the result.
2468 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2469 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2470 Since the code is newer, there might still be some new bugs
2471 (though not as many as before Martin Atzmueller's fixes:-). But
2472 the new code is substantially simpler and clearer, and hopefully
2473 any remaining bugs will be simpler, less fundamental, and more
2474 fixable then the bugs in the old code.
2475 ** The revised compiler is still a little unsteady on its feet.
2477 *** The debugging information it produces (particularly the names
2478 of FUNCTION objects) is sometimes much less useful than what
2479 the old compiler produced.
2480 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2481 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2482 within a MACROLET) has been temporarily weakened.
2483 ** There are new compiler optimizations for various functions:
2484 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2485 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2486 *** the math functions TRUNCATE, FLOOR, and CEILING
2487 *** the function-of-all-trades COERCE
2488 Mostly these should be transparent, but there's one
2489 potentially-annoying problem (bug 117): when the compiler
2490 inline-expands a function and does type analysis on the result,
2491 it can create control paths which have type mismatches, and
2492 when it can't prove that those control paths aren't taken,
2493 it will issue WARNINGs about the type mismatches. This is
2494 a particular problem in practice for the new sequence functions.
2495 It's not clear how this should be fixed, and for now, a
2496 workaround is given in the entry for 117 in the BUGS file.
2497 ** (Because of the interaction between the two previous items --
2498 occasional inlining problems and new inline expansions -- some
2499 of the new sequence function optimizations won't really kick in
2500 completely until debugging information, and then inlining, are
2501 straightened out in some future version.)
2502 * minor incompatible changes:
2503 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2504 DIRECTORY no longer implicitly promotes NIL slots of its
2505 pathname argument to :WILD. In particular, when you ask for the
2506 contents of a directory (which you used to be able to do without
2507 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2508 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2509 ** changes in behavior that ANSI explicitly defines to be
2510 implementation dependent:
2511 *** The new compiler-only implementation still conforms with ANSI,
2512 but acts a little different than before. Besides the obvious
2513 changes in performance tradeoffs (that the cost per form passed
2514 to EVAL has gone up, and the cost per form executed by EVAL
2515 has gone down), the behavior of the system changes a little
2516 because there are no longer any interpreted function objects.
2517 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2518 e.g. doing COMPILE on the output of interactive DEFUN is
2520 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2522 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2523 has changed from (:CL) to NIL.
2524 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2525 e.g. #\Newline and #\Tab, don't have names specified in the
2526 ANSI Common Lisp standard, is now based on their ASCII symbolic
2527 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2528 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2529 are no longer used for output.
2530 ** changes in internal implementation constants:
2531 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2532 4 million. (If your application spends a lot of time GCing and
2533 you have a lot of RAM, you might want to experiment with
2534 increasing it even more.)
2535 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2536 However, almost all old code should still continue to work without
2537 immediate update, as SB-C-CALL is now a (deprecated) nickname
2539 ** Old operator names in the style DEF-FOO are now deprecated in
2540 favor of new corresponding names DEFINE-FOO, for consistency with
2541 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2542 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2543 internal symbols, but a few supported extensions like
2544 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2545 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2546 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2547 etc. as you get deeper into recursive calls to the debugger
2548 command loop, instead of the old "5]", "5]]", "5]]]"
2549 sequence. (I was motivated to do this when squabbles between
2550 ILISP and SBCL left me very deeply nested in the debugger. In the
2551 short term, this change will probably provoke more ILISP/SBCL
2552 squabbles, but hopefully it will be an improvement in the long run.)
2553 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2554 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2555 function, since declaiming return types involving aliens is
2556 (1) annoyingly messy to do by hand and (2) vital to efficient
2557 compilation of code which calls such functions.
2558 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2559 longer reexported by the SB-EXT package. They're solely useful
2560 for alien code, so it seems more logical that you should get
2561 them from the SB-ALIEN package, not in SB-EXT.
2562 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2563 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2564 features. Instead, the code that they used to control is always
2565 built into the system.
2566 * many other bug fixes
2567 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2568 advantage of the new EVAL-WHEN stuff and to clean them up in
2569 general, and they are now more ANSI-compliant in a number of
2570 ways. Martin Atzmueller is responsible for a lot of this.
2571 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2573 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2574 *** correct ERROR type for various file operations
2575 *** some fixes for Lisp streams
2576 *** DEFMETHOD syntax checking
2577 *** changing old weird representation of debug information as
2578 strings (which, among their other deficiencies, don't transform
2579 correctly when you rename packages, and don't change their
2580 print representation when you change things like *PACKAGE*
2581 and *PRINT-LENGTH*) to symbols and lists of symbols
2582 He also made several improvements and fixed several bugs in DESCRIBE.
2583 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2585 *** misbehavior of WRITE-STRING/WRITE-LINE
2586 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2587 and several other LOOP problems as well
2588 *** DIRECTORY when similar filenames are present
2589 *** DEFGENERIC with :METHOD options
2590 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2591 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2592 *** argument ordering in FIND with :TEST option
2593 *** mishandled package designator argument in APROPOS-LIST
2594 *** various problems in the backquote readmacro
2595 *** a bug in APROPOS
2596 *** probably some others that I'm not describing very well here,
2597 since the CVS log documents them by reference to sbcl-devel
2598 messages, and the SourceForge archives aren't working well.:-(
2599 ** Dan Barlow improved the Alpha port (and is making progress on the
2600 PPC port, for those of you who think different).
2601 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2602 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2603 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2604 continues to work on the SPARC port (for those of you in a position
2605 to look down upon our little PC-compatible boxes from a great height).
2606 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2607 and uses that copy, rather than the current dynamic value, when
2608 it's trying to decide whether to truncate output. Thus e.g.
2609 (let ((*print-lines* 50))
2610 (pprint-logical-block (stream nil)
2612 (let ((*print-lines* 8))
2613 (print (aref possiblybigthings i) stream)))))
2614 should now truncate the logical block only at 50 lines, instead of
2615 often truncating it at 8 lines, as it did before.
2616 * The doc/cmucl/ directory, containing old CMU CL documentation
2617 from the time of the fork, is no longer part of the base system.
2618 SourceForge has shut down its anonymous FTP service, and with it
2619 my original plan for distributing the old CMU CL documentation
2620 there. For now, if you need these files you can download an old
2621 SBCL source release and extract them from it.
2622 * The fasl file version number changed again, for dozens of reasons,
2623 some of which are apparent above.
2625 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2626 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2627 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2628 patch, so that DISASSEMBLE output is much nicer.
2629 * The code in the SB-PROFILE package now seems reasonably stable.
2630 I still haven't decided what the final interface should look like
2631 (I'd like PROFILE to interact cleanly with TRACE, since both
2632 facilities use function encapsulation) but if you have a need
2633 for profiling now, you can probably use it successfully with
2634 the current CMU-CL-style interface.
2635 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2636 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2637 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2638 link now returns the dangling link itself, and for similar
2639 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2640 link itself. (In these cases the old code signalled an error and
2641 looped endlessly, respectively.) Thus, DIRECTORY now works even
2642 in the presence of dangling and cyclic symbolic links.
2643 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2644 is now a supported extension again, since the consensus on
2645 sbcl-devel was that it can be useful for ordinary development
2646 work, not just for debugging SBCL itself.
2647 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2648 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2649 that currently-defined functions might be redefined later with
2650 different return types.
2651 * Hash tables can be printed readably, as inspired by CMU CL code
2652 of Eric Marsden and SBCL code of Martin Atzmueller.
2653 * better error handling in CLOS method combination, thanks to
2654 Martin Atzmueller porting Pierre Mai's CMU CL patches
2655 * more overflow fixes for >16Mbyte I/O buffers
2656 * A bug in READ has been fixed, so that now a single Ctrl-D
2657 character suffices to cause end-of-file on character streams.
2658 In particular, now you only need one Ctrl-D at the command
2659 line (not two) to exit SBCL.
2660 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2662 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2663 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2664 does the right thing.
2665 * The implementation of some type tests, especially for CONDITION
2666 types, is now tidier and maybe faster, due to CMU CL code
2667 originally by Douglas Crosher, ported by Martin Atzmueller.
2668 * Some math functions have been fixed, and there are new
2669 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2670 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2671 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2672 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2673 likely to be built into sbcl-0.7.0.)
2674 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2675 CL, ported to SBCL by Martin Atzmueller)
2676 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2677 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2678 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2679 * There's a new slam.sh hack to shorten the edit/compile/debug
2680 cycle for low-level changes to SBCL itself, and a new
2681 :SB-AFTER-XC-CORE target feature to control the generation of
2682 the after-xc.core file needed by slam.sh.
2683 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2684 COMPILE-FILE is no longer supported, so that now every function
2685 gets an entry point, so that block compilation looks a little
2686 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2687 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2688 returns the number of bytes consed since the system started,
2689 rather than the number consed since the first time the function
2690 was called. (The new definition parallels ANSI functions like
2691 CL:GET-INTERNAL-RUN-TIME.)
2692 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2693 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2694 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2695 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2696 * Fasl file version numbers are now independent of the target CPU,
2697 since historically most system changes which required version
2698 number changes have affected all CPUs equally. Similarly,
2699 the byte fasl file version is now equal to the ordinary
2702 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2703 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2704 is no longer recognized. I apologize for this, because it was
2705 listed in SB-EXT as a supported extension, but I found that
2706 its existing behavior was poorly specified, as well as incorrectly
2707 specified, and it looked like too much of a mess to straighten it
2708 out. I have enough on my hands trying to get ANSI stuff to work..
2709 * many patches ported from CMU CL by Martin Atzmueller, with
2710 half a dozen bug fixes in pretty-printing and the debugger, and
2711 half a dozen others elsewhere
2712 * fixed bug 13: Floating point infinities are now supported again.
2713 They might still be a little bit flaky, but thanks to bug reports
2714 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2715 as flaky as they were.
2716 * The --noprogrammer command line option is now supported. (Its
2717 behavior is slightly different in detail from what the old man
2718 page claimed it would do, but it's still appropriate under the
2719 same circumstances that the man page talks about.)
2720 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2721 are now supported, and enabled by default. Thus, the compiler can
2722 handle many floating point and complex operations much less
2723 inefficiently. (Thus e.g. you can implement a complex FFT
2725 * The compiler now detects type mismatches between DECLAIM FTYPE
2726 and DEFUN better, and implements CHECK-TYPE more correctly, and
2727 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2728 thanks to patches from Martin Atzmueller.
2729 * various fixes to make the cross-compiler more portable to
2730 ANSI-conforming-but-different cross-compilation hosts (notably
2731 Lispworks for Windows, following bug reports from Arthur Lemmens)
2732 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2733 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2734 fixed thanks to Pierre Mai's CMU CL patches.
2735 * fixes to keep the system from overflowing internal counters when
2736 it tries to use i/o buffers larger than 16M bytes
2737 * fixed bug 45a: Various internal functions required to support
2738 complex special functions have been merged from CMU CL sources.
2739 (When I was first setting up SBCL, I misunderstood a compile-time
2740 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2741 * improved support for type intersection and union, fixing bug 12
2742 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2743 more obscure bugs as well
2744 * some steps toward byte-compiling non-performance-critical
2745 parts of the system, courtesy of patches from Martin Atzmueller
2746 * Christophe Rhodes has made some debian packages of sbcl at
2747 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2748 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2749 stable, but are nonetheless usable. When he's ready, I'd be happy
2750 to add them to the SourceForge "File Releases" section. (And if
2751 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2752 * new fasl file format version number (because of changes in
2753 internal representation of (OR ..) types to accommodate the new
2754 support for (AND ..) types, among other things)
2756 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2757 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2759 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2761 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2762 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2763 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2764 * DESCRIBE now works on structure objects again.
2765 * Most function call argument type mismatches are now handled as
2766 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2767 know whether the function will be redefined before the call is
2768 executed. (The compiler could flag local calls with full WARNINGs,
2769 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2770 it doesn't keep track of enough information to know whether calls
2771 are local in this sense.)
2772 * Compiler output is now more verbose, with messages truncated
2773 later than before. (There should be some supported way for users
2774 to override the default verbosity, but I haven't decided how to
2775 provide it yet, so this behavior is still controlled by the internal
2776 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2777 src/compiler/ir1util.lisp.)
2778 * Fasl file format version numbers have increased again, because
2779 support for the Gray streams extension changes the layout of the
2780 system's STREAM objects.
2781 * The Gray subclassable streams extension now works, thanks to a
2782 patch from Martin Atzmueller.
2783 * The full LOAD-FOREIGN extension (not just the primitive
2784 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2785 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2786 but like most other programs, it defaults to copying the Unix
2787 environment from the original process instead of starting the
2788 new process in an empty environment.
2789 * Extensions which manipulate the Unix environment now support
2790 an :ENVIRONMENT keyword option which doesn't smash case or
2791 do other bad things. The CMU-CL-style :ENV option is retained
2792 for porting convenience.
2793 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2794 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2796 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2798 * A patch from Martin Atzmueller seems to have solved the SIGINT
2799 problem, and as far as we know, signal-handling now works cleanly.
2800 (If you find any new bugs, please report them!)
2801 * The system no longer defaults Lisp source file names to types
2802 ".l", ".cl", or ".lsp", but only to ".lisp".
2803 * The compiler no longer uses special default file extensions for
2804 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2805 seems to expect a single default extension for all compiled code,
2806 and there's no compelling reason to try to stretch the standard
2807 to allow two different extensions.) Instead, byte-compiled files
2808 default to the same extension as native-compiled files.
2809 * Fasl file format version numbers have increased again, because
2810 a rearrangement of internal implementation packages made some
2811 dumped symbols in old fasl files unreadable in new cores.
2812 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2813 many fewer weird special cases.
2814 * Bug #17 (differing COMPILE-FILE behavior between logical and
2815 physical pathnames) has been fixed, and some related misbehavior too,
2816 thanks to a patch from Martin Atzmueller.
2817 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2818 by Tim Moore, ported to SBCL by Martin Atzmueller.
2819 * Martin Atzmueller fixed several filesystem-related problems,
2820 including bug #36, in part by porting CMU CL patches, which were
2821 written in part by Paul Werkowski.
2822 * More compiler warnings in src/runtime/ are gone, thanks to
2823 more patches from Martin Atzmueller.
2824 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2827 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2829 * DESCRIBE now works on CONDITION objects.
2830 * The debugger now handles errors which arise when trying to print
2831 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2833 * The build system now uses an additional file, customize-target-features.lisp,
2834 to allow local modifications to the target *FEATURES* list. (The point of
2835 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2836 debugging features enabled, without having to worry about propagating it
2837 into everyone's system when I do a "cvs update".) When no
2838 customize-target-features.lisp file exists, the target *FEATURES* list
2839 should be constructed the same way as before.
2840 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2841 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2842 warn about behavior which is undefined under the ANSI spec. Note: This
2843 is specified by ANSI, but it's not very popular with programmers.
2844 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2845 macro in the SBCL sources for an example of a workaround which you
2846 might use to make portable ANSI-standard code which does what you want.
2847 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2848 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2849 when it's used as a non-toplevel form. (This is required in order
2850 to implement the DEFCONSTANT-EQX macro.)
2851 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2852 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2853 funny things, due to bugs in the implementation of EVAL-WHEN
2854 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2855 non-toplevel DEFCONSTANTs are uncommon.)
2856 * The core file version number and fasl file version number have been
2857 incremented, because the old noncompliant DEFCONSTANT behavior involved
2858 calling functions which no longer exist, and because I also took the
2859 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2860 * fixed bug 1 (error handling before read-eval-print loop starts), and
2861 redid debugger restarts and related debugger commands somewhat while
2863 ** The QUIT debugger command is gone, since it did something
2864 rather different than the SB-EXT:QUIT command, and since it never
2865 worked properly outside the main toplevel read/eval/print loop.
2866 Invoking the new TOPLEVEL restart provides the same functionality.
2867 ** The GO debugger command is also gone, since you can just invoke
2868 the CONTINUE restart directly instead.
2869 ** The TOP debugger command is also gone, since it's redundant with the
2870 FRAME 0 command, and since it interfered with abbreviations for the
2872 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2874 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2875 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2876 some porting work by Martin Atzmueller)
2877 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2878 with a boatload of patches which he ported to SBCL. Now that those
2880 ** The system tries to make sure that its low-priority messages
2881 are prefixed by semicolons, to help people who like to use
2882 syntax highlighting in their ILISP buffer. (This patch
2883 was originally due to Raymond Toy.)
2884 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2885 patches originally written by Raymond Toy.
2886 ** The compiler understands coercion between single-value and
2887 multiple-VALUES type expressions better, getting rid of some very
2888 weird behavior, thanks to patches originally by Robert MacLachlan
2889 and Douglas Crosher.
2890 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2891 lambda lists, thanks to a patch originally by Pierre Mai.
2892 ** The system no longer bogusly warns about "abbreviated type
2894 ** The compiler gets less confused by inlining and RETURN-FROM,
2895 thanks to some patches originally by Tim Moore.
2896 ** The system no longer hangs when dumping circular lists to fasl
2897 files, thanks to a patch originally from Douglas Crosher.
2898 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2899 undefined function error.
2900 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2901 in structure slot initforms) for now, documented workaround instead:-|
2902 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2903 * fixed bug 5: added stubs for various Gray stream functions called
2904 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2905 installed, at least appropriate type errors are generated
2906 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2907 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2908 consistently in DEFMETHOD forms.
2909 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2910 it doesn't seem to affect SBCL after all
2911 * The C runtime system now builds with better optimization and many
2912 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2914 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2916 * The system is now under CVS at SourceForge (instead of the
2917 CVS repository on my home machine).
2918 * The new signal handling code has been tweaked to treat register
2919 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2920 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2921 downstream, e.g. in debug-int.lisp, has implicit dependencies
2922 on the unsignedness of integer representation of machine words,
2923 and that caused the system to bomb out with infinite regress
2924 when trying to recover from type errors involving signed values,
2925 e.g. (BUTLAST '(1 2 3) -1).)
2926 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2927 (This was one of the bugs Peter Van Eynde reported back in July.)
2928 * The system now uses code inspired by Colin Walters' O(N)
2929 implementation of MAP (from the cmucl-imp@cons.org mailing
2930 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2931 inline the MAP operation, and there is more than one
2932 sequence argument to the MAP call (so that it can't just
2933 do ETYPECASE once and for all based on the type of the
2934 single sequence argument). (The old non-inline implementation
2935 of the general M-argument sequence-of-length-N case required
2936 O(M*N*N) time when any of the sequence arguments were LISTs.)
2937 * The QUIT :UNIX-CODE keyword argument has been renamed to
2938 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2939 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2941 * Raymond Wiker's patches to port dynamic loading from Linux to
2942 FreeBSD have been added.
2943 * The BUGS file is now more nearly up to date, thanks in large part
2944 to Martin Atzmueller's review of it.
2945 * The debugger now flushes standard output streams before it begins
2946 its output ("debugger invoked" and so forth).
2947 * The core version number and fasl file version number have both
2948 been incremented, because of incompatible changes in the layout
2950 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2951 used to not be called for a saved Lisp image.)
2952 * Martin Atzmueller's version of a patch to fix a compiler crash,
2953 as posted on sbcl-devel 13 September 2000, has been installed.
2954 * Instead of installing Martin Atzmueller's patch for the
2955 compiler transform for SUBSEQ, I deleted the compiler transform,
2956 and transforms for some similar consing operations.
2957 * A bug in signal handling which kept TRACE from working on OpenBSD
2959 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2960 away by constant folding
2961 * The system now defines its address space constants in one place
2962 (in the Lisp sources), and propagates them automatically elsewhere
2963 (through GENESIS and the sbcl.h file). Therefore, patching the
2964 address map is less unnecessarily tedious and error-prone. The
2965 Lisp names of address space constants have also been systematized.
2966 * CVS tags like dollar-Header-dollar have been removed from
2967 the sources, because they have never saved me trouble and
2968 they've been source of trouble working with patches and other
2969 diff-related operations.
2970 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2971 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2973 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2975 * The system has been ported to OpenBSD.
2976 * The system now compiles with a simple "sh make.sh" on the systems
2977 that it's supported on. I.e., now you no longer need to tweak
2978 text in the target-features.lisp-expr and symlinks in src/runtime/
2979 by hand, the make.sh takes care of it for you.
2980 * The system is no longer so grossly inefficient when compiling code
2981 involving vectors implemented as general (not simple) vectors (VECTOR T),
2982 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2983 which dares to use the various sequence functions on non-simple
2984 vectors, takes less of a performance hit.
2985 * There is now a primitive type predicate VECTOR-T-P
2986 to test for the (VECTOR T) type, so that e.g.
2987 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2988 can now be compiled with some semblance of efficiency. (The old code
2989 turned the type declaration into a full call to %TYPEP at runtime!)
2990 * AREF on (VECTOR T) is still not fast, since it's still compiled
2991 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2992 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2993 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2994 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2995 without making full calls to SUBTYPEP at runtime.
2996 (Some analogous efficiency issues for non-simple vectors specialized to
2997 element types other than T, or for non-simple multidimensional arrays,
2998 have not been addressed. They could almost certainly be handled the
2999 same way if anyone is motivated to do so.)
3000 * The changes in array handling break binary compatibility, so
3001 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3002 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3003 instead of (VALUES T T).
3004 * By following the instructions that Dan Barlow posted to sbcl-devel
3005 on 2 July 2000, I was able to enable primitive dynamic object
3006 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3007 functionality is not implemented (since it calls ld to resolve
3008 library references automatically, requiring RUN-PROGRAM for its
3009 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3010 try to resolve library references) is now supported.
3011 * The system now flushes the standard output streams when it terminates,
3012 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3013 them at several other probably-convenient times, e.g. in each pass of
3014 the toplevel read-eval-print loop, and after evaluating a form given
3015 as an "--eval" command-line option. (These changes were motivated by a
3016 discussion of stream flushing issues on cmucl-imp in August 2000.)
3017 * The source transform for TYPEP of array types no longer assumes
3018 that an array whose element type is a not-yet-defined type
3019 is implemented as an array of T, but instead punts, so that the
3020 type will be interpreted at runtime.
3021 * There is now some support for cross-compiling in make.sh: each of
3022 the phases of make.sh has its own script. (This should be transparent
3023 to people doing ordinary, non-cross-compile builds.)
3024 * Since my laptop doesn't have hundreds of megabytes of memory like
3025 my desktop machine, I became more motivated to do some items on
3026 my to-do list in order to reduce the size of the system a little:
3027 ** Arrange for various needed-only-at-cold-init things to be
3028 uninterned after cold init. To support this, those things have
3029 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3030 symbols with such names are now uninterned after cold init).
3031 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3032 fasl files for cold load.
3033 ** Remove the old compiler structure pooling code (which used to
3034 be conditional on the target feature :SB-ALLOC) completely.
3035 ** Redo the representation of some data in cold init to be more compact.
3036 (I also looked into supporting byte compiled code at bootstrap time,
3037 which would probably reduce the size of the system a lot, but that
3038 looked too complicated, so I punted for now.)
3039 * The maximum signal nesting depth in the src/runtime/ support code has
3040 been reduced from 4096 to 256. (I don't know any reason for the very
3041 large old value. If the new smaller value turns out to break something,
3042 I'll probably just bump it back up.)
3043 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3045 * Many, many bugs reported by Peter Van Eynde have been added to
3046 the BUGS list; some have even been fixed.
3047 * While enabling dynamic object file loading, I tried to make the
3048 code easier to understand, renaming various functions and variables
3049 with less ambiguous names, and changing some function calling
3050 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3051 * While trying to figure out how to do the OpenBSD port, I tried to
3052 clean up some of the code in src/runtime/. In particular, I dropped
3053 support for non-POSIX signal handling, added various comments,
3054 tweaked the code to reduce the number of compilation warnings, and
3055 renamed some files to increase consistency.
3056 * To support the new automatic configuration functionality in make.sh,
3057 the source file target-features.lisp-expr has been replaced with the
3058 source file base-target-features.lisp-expr and the machine-generated
3059 file local-target-features.lisp-expr.
3060 * fixed a stupid quoting error in make.sh so that using CMU CL
3061 "lisp -batch" as cross-compilation host works again
3063 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3065 * DESCRIBE no longer tries to call itself recursively to describe
3066 bound/fbound values, so that it no longer fails on symbols which are
3067 bound to themselves (like keywords, T, and NIL).
3068 * DESCRIBE now works on generic functions.
3069 * The printer now prints less-screwed-up representations of closures
3070 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3071 * A private symbol is used instead of the :EMPTY keyword previously
3072 used to mark empty slots in hash tables. Thus
3073 (DEFVAR *HT* (MAKE-HASH-TABLE))
3074 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3075 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3076 now does what ANSI says that it should. (You can still get
3077 similar noncompliant behavior if bang on the hash table
3078 implementation with all the symbols you get back from
3079 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3080 This breaks binary compatibility, since tests for equality to
3081 :EMPTY are wired into things like the macroexpansion of
3082 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3084 * There's now a minimal placeholder implementation for CL:STEP,
3085 as required by ANSI.
3086 * An obscure bug in the interaction of the normal compiler, the byte
3087 compiler, inlining, and structure predicates has been patched
3088 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3089 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3091 * Missing ordinary arguments in a macro call are now detected even
3092 when the macro lambda list contains &KEY or &REST.
3093 * The debugger no longer complains about encountering the top of the
3094 stack when you type "FRAME 0" to explicitly instruct it to go to
3095 the top of the stack. And it now prints the frame you request even
3096 if it's the current frame (instead of saying "You are here.").
3097 * As specified by ANSI, the system now always prints keywords
3098 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3100 * The default initial SIZE of HASH-TABLEs is now smaller.
3101 * Type information from CLOS class dispatch is now propagated
3102 into DEFMETHOD bodies, so that e.g.
3103 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3105 is now basically equivalent to
3106 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3107 (DECLARE (TYPE SINGLE-FLOAT X))
3109 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3110 operation, without having to do run-time type dispatch.
3111 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3112 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3113 * Since I don't seem to be making big file reorganizations very often
3114 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3115 is overflowing my ability to conveniently back them up), I've finally
3116 checked the system into CVS. (The CVS repository is on my home system,
3117 not at SourceForge -- putting it on SourceForge might come later.)
3118 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3119 high-level GC-NOTIFY-FOO functions send their output. (There's
3120 still very little control of where low-level verbose GC functions
3121 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3122 less than it used to -- the GC-NOTIFY-FOO functions are now under
3123 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3124 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3125 in only one place in the source code, and propagates it automatically
3126 everywhere that it's needed. Thus e.g. when I bump the version from
3127 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3128 * The C source files now include boilerplate legalese and documentation
3129 at the head of each file (just as the Lisp source files already did).
3130 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3131 to his page will be replaced with a link to his new CLiki service.
3133 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3135 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3136 * The build process now looks for GNU make under the default name "gmake",
3137 instead of "make" as it used to. If GNU make is not available as "gmake"
3138 on your system, you can change this default behavior by setting the
3139 GNUMAKE environment variable.
3140 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3141 can build without error under CMU CL.
3143 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3145 * There is now a partial SBCL user manual (with some new text and some
3146 text cribbed from the CMU CL manual).
3147 * The beginnings of a profiler have been added (starting with the
3148 CMU CL profiler and simplifying and cleaning up). Eventually the
3149 main interface should be through the TRACE macro, but for now,
3150 it's still accessed through vaguely CMU-CL-style functions and macros
3151 exported from the package SB-PROFILE.
3152 * Some problems left over from porting CMU CL to the new
3153 cross-compilation bootstrap process have been cleaned up:
3154 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3155 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3156 part when getting rid of the compiler *BACKEND* stuff.)
3157 ** The value of *NULL-TYPE* was screwed up, because it was
3158 being initialized before the type system knew the final
3159 definition of the 'NULL type. This screwed up several key
3160 optimizations in the compiler, causing inefficiency in all sorts
3161 of places. (I found it because I wanted to understand why
3162 GET-INTERNAL-RUN-TIME was consing.)
3163 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3164 PROCLAIM FTYPE information. Unfortunately this broke binary
3165 compatibility again, since now the forms output by DEFGENERIC
3166 to refer to functions which didn't exist in 0.6.3.
3167 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3168 can use the new (as of 0.6.3) transform for SOME into MAP into
3170 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3171 values to (INTEGER 0 1000000), so that the time code will no longer
3172 occasionally get blown up by Linux returning 1000000 microseconds
3173 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3174 its output conform to the ANSI spec. (Alas, this makes its output
3175 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3176 * A full call to MAP NIL with a single sequence argument no longer conses.
3177 * fixes to problems pointed out by Martin Atzmueller:
3178 * The manual page no longer talks about multiprocessing as though
3179 it were currently supported.
3180 * The ILISP support patches have been removed from the distribution,
3181 because as of version 5.10.1, ILISP now supports SBCL without us
3182 having to maintain patches.
3183 * added a modified version of Raymond Toy's recent CMU CL patch for
3184 EQUALP comparison of HASH-TABLE
3186 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3188 * The system still can't cross-compile itself with
3189 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3190 entails), but at least it can compile more of itself that way
3191 than it used to be able to, and various buglets which were uncovered
3192 by trying to cross-compile itself that way have now been fixed.
3193 * This release breaks binary compatibility again. This time
3194 at least I've incremented the FASL file format version to 2, so that the
3195 problem can be detected reliably instead of just causing weird errors.
3196 * various new style warnings:
3197 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3198 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3199 ** using the lexical binding of a variable named in the *FOO* style
3200 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3201 as specified by ANSI.
3202 * *RANDOM-STATE* is no longer automatically initialized from
3203 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3204 default behavior of the system is to repeat its behavior every time
3205 it's run. If you'd like to change this behavior, you can always
3206 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3207 old convention there was no comparably easy way to get the system to
3208 repeat its behavior every time it was run.
3209 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3210 FTYPE declarations has been removed, in favor of their ANSI
3211 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3212 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3213 the types of their sequence arguments can be determined at compile time.
3214 This is done through a new open code expansion for MAP which eliminates
3215 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3216 argument types can be determined at compile time.
3217 * The optimizer now transforms COERCE into an identity operation when it
3218 can prove that the coerced object is already of the correct type. (This
3219 can be a win for machine generated code, including the output of other
3220 optimization transforms, such as the MAP transform above.)
3221 * Credit information has been moved from source file headers into CREDITS.
3222 * Source file headers have been made more standard.
3223 * The CASE macro now compiles without complaining even when it has
3226 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3228 * (Note that the way that the PCL macroexpansions were rewritten
3229 to accommodate the change in DEFGENERIC below breaks binary
3230 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3231 not run under sbcl-0.6.2. Once we get out of alpha releases,
3232 i.e. hit release 1.0.0, we'll probably try to maintain binary
3233 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3234 and sbcl-1.4.4. Until then, however, it might be fairly common
3235 for maintenance releases to break binary compatibility.)
3236 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3238 * The reporting of unhandled signals has been changed to print some
3239 explanatory text as well as the report form. (Previously only
3240 the report form was printed.)
3241 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3242 it defines, so that the compiler no longer issues undefined function
3243 warnings for compiled-but-not-yet-loaded generic functions.
3244 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3245 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3246 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3247 section of the ANSI spec are supported.
3248 * The "" nickname for the "KEYWORD" package has been removed.
3249 The reader still handles symbol tokens which begin with a package marker
3250 as keywords, but it doesn't expose its mechanism for doing so in the
3251 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3252 * The system now issues STYLE-WARNINGs for contradictory TYPE
3253 proclamations. (Warnings for contradictory FTYPE proclamations would
3254 be nice too, but those can't be done usefully unless the type system
3255 is made smarter about FUNCTION types.)
3256 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3257 systematized, so that "*target-*.lisp is supposed to exist only on the
3258 target and imply that there's a related file which exists on the
3259 host, and *host-*.lisp is supposed to exist only on the host and imply
3260 that there's a related file which exists on the target. This involves a
3261 lot of renaming. Hopefully the acute confusion caused by the renaming
3262 will be justified by the reduction in chronic confusion..
3263 ** runtime-type.lisp -> early-target-type.lisp
3264 ** target-type.lisp -> late-target-type.lisp
3265 ** early-host-format.lisp -> early-format.lisp
3266 ** late-host-format.lisp -> late-format.lisp
3267 ** host-error.lisp -> misc-error.lisp
3268 ** early-error.lisp -> early-target-error.lisp
3269 ** late-error.lisp -> late-target-error.lisp
3270 ** host-defboot.lisp -> early-defboot.lisp
3271 ** code/misc.lisp -> code/target-misc.lisp
3272 ** code/host-misc.lisp -> code/misc.lisp
3273 ** code/numbers.lisp -> code/target-numbers.lisp
3274 ** code/early-numbers.lisp -> numbers.lisp
3275 ** early-host-type.lisp -> early-type.lisp
3276 ** late-host-type.lisp -> late-type.lisp
3277 ** host-typep.lisp -> typep.lisp
3278 ** load.lisp -> target-load.lisp
3279 ** host-load.lisp -> load.lisp
3280 ** host-disassem.lisp -> disassem.lisp
3281 ** host-insts.lisp -> insts.lisp
3282 ** byte-comp.lisp -> target-byte-comp.lisp
3283 ** host-byte-comp.lisp -> byte-comp.lisp
3284 ** host-signal.lisp -> signal.lisp
3285 ** host-defstruct.lisp -> defstruct.lisp
3286 ** late-target-type.lisp -> deftypes-for-target.lisp
3287 Furthermore, several other previously target-only files foo.lisp (e.g.
3288 hash-table.lisp and random.lisp) have been split into a target-and-host
3289 foo.lisp file and a target-only target-foo.lisp file, with their key type
3290 definitions in the target-and-host part, so that the cross-compiler will
3291 know more about target types.
3292 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3293 gone away. In their place are various *BACKEND-FOO* variables
3294 corresponding to the slots of the old structure.
3295 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3296 into the target SBCL has been fixed.
3297 * The chill.lisp system for loading cold code into a running SBCL
3299 * Support for the CMU CL "scavenger hook" extension has been removed.
3300 (It was undocumented and unused in the CMU CL sources that SBCL was
3301 derived from, and stale in sbcl-0.6.1.)
3302 * Various errors in the cross-compiler type system were detected
3303 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3304 (enabling various consistency checks). Many of them were fixed,
3305 but some hard problems remain, so the compiler is back to
3306 running without *TYPE-SYSTEM-INITIALIZED* for now.
3307 * As part of the cross-compiler type system cleanup, I implemented
3308 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3309 * I have started adding UNCROSS calls throughout the type system
3310 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3311 on cross-compiler input files will be able to go away, and various
3313 * CONSTANTP now returns true for quoted forms (as explicitly required
3316 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3318 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3319 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3320 (MAKE-LIST -1). In the longer term, it ought to become true
3321 that declarations are assertions even at SAFETY 1. For now, it's not
3322 quite true even at SAFETY 3, but it's at least more nearly true..
3323 (Note that this change seems to increases the size of the system by
3324 O(5%) and to decrease the speed of the compiler by 20% or more.)
3325 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3326 for the problem of printing dozens of lines of distracting information
3327 about low-level system machinery as part of the top stack frame
3328 on entry to the debugger when an undefined function was called.
3329 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3330 is not reset to COMMON-LISP-USER.
3331 * Compilation of stuff related to dyncount.lisp has been made conditional
3332 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3333 smaller. The various dyncount-related symbols have been moved into
3334 a new "SB-DYNCOUNT" package.
3335 * tty-inspect.lisp has been renamed to inspect.lisp.
3336 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3337 feature has gone away. (When we eventually port to other flavors of
3338 libc and/or Unix, we'll try to make the differences between flavors
3339 invisible at the user level.)
3340 * Various other *FEATURES* tags, and/or their associated conditionals,
3341 have been removed if obsolescent, or given better documentation, or
3342 sometimes given more-mnemonic names.
3344 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3346 * tidied up "make.sh" script
3347 * tidied up system directory structure
3348 * better "clean.sh" behavior
3349 * added doc/FOR-CMUCL-DEVELOPERS
3350 * many many small tweaks to output format, e.g. removing possibly-confusing
3351 trailing #\. character in DESCRIBE-INSTANCE
3352 * (EQUALP #\A 'A) no longer signals an error.
3353 * new hashing code, including EQUALP hashing
3354 * tidied up Lisp initialization and toplevel
3355 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3356 * command line argument processing
3357 * added POSIX-GETENV function to deal with Unix-ish environment variables
3358 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3359 terminating SBCL on EOF
3360 * non-verbose GC by default
3361 * There is no more "sbcl" shell script; the sbcl file is now the C
3362 runtime executable (just like CMU CL).
3363 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3365 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3366 symbol and package information as Lisp native symbol and package objects
3367 instead of strings naming symbols and strings naming packages. This way,
3368 whenever packages are renamed (as in warm init), debug information is
3369 transformed along with everything else.
3370 * tweaked the optimization policy declarations which control the building
3371 of SBCL itself. Now, among other things, the system no longer saves
3372 source location debugging information. (This helps two problems at once
3373 by reducing SBCL size and by keeping SBCL from trying to look for its
3374 sources -- which may not exist -- when reporting errors.)
3375 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3376 debugging and testing purposes
3377 * cleaned up printing, making the printer call PRINT-OBJECT for
3378 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3379 methods, giving nearly-ANSI behavior
3380 * converted almost all special variables to use *FOO* naming convention
3381 * deleted PARSE-TIME functionality, since it can be done portably
3382 * moved some files out of cold init into warm init
3383 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3385 * regularized formatting of source files
3386 * added an install.sh script
3387 * fixed ridiculous memory usage of cross-compiler by making
3388 compiler/alloc.lisp not try to do pooling unless it can hook
3389 itself into the GC of the cross-compilation host. Now the system
3390 builds nicely on my old laptop.
3391 * added :SB-ALLOC in target-features.lisp-expr
3392 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3393 was not implemented)
3394 * re-did condition handling and note reporting in the compiler. Notes
3395 are no longer handled by signalling conditions. Style warnings
3396 and warnings are handled more correctly and reported in such a way
3397 that it's easy to find one or the other in your output (so that you
3398 can e.g. figure out which of many problems caused COMPILE-FILE to
3400 * changed the severity of several compiler warnings from full WARNING
3401 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3402 compiler note reporting so that it doesn't use the condition system
3403 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3404 COMPILE-FILE command)
3405 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3406 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3407 no longer supported, since their implementation was deeply intertwingled
3408 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3409 * removed bogus "support" for compiler macros named (SETF FOO), and
3410 removed the compiler macro for SETF INFO (but only after making a fool
3411 of myself on the cmucl-imp mailing list by posting a bogus patch for
3412 DEFINE-COMPILER-MACRO..)
3413 * Compiled files containing forms which have side effects on the Lisp
3414 reader (such as DEFPACKAGE forms) are now handled more correctly.
3415 (Compiler queuing of top level lambdas has been suppressed by setting
3416 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3417 * deleted various currently-unused source files, e.g. gengc.lisp. They
3418 may be added back at some point e.g. when porting to other architectures,
3419 but until they are it's distracting to distribute them and to try to
3421 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3422 there were so many of them they're just distractions, and UNCROSS is
3423 known to be able to handle the current sources
3424 * moved PROFILE functionality into TRACE, so that it will be clear
3425 how the wrapping and unwrapping of functions when you profile them
3426 interacts with the wrapping and unwrapping of functions when you
3427 trace them. (Actually, the functionality isn't there yet, but at least
3428 the interface specification is there. Hopefully, the functionality will
3429 arrive with some future maintenance release.)
3430 * removed host-oops.lisp
3431 * changed signature of QUIT function to allow UNIX-CODE argument
3432 * fixed READ-SEQUENCE bug
3433 * tweaked verbose GC output so that it looks more like the progress
3434 output that ANSI specifies for functions like LOAD
3435 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3436 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob