1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
3 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
4 be used for bundling the runtime and the core file into one
5 executable binary. This feature is not currently supported on all SBCL
6 platforms. (thanks to James Bielman and NIIMI Satoshi)
7 * new feature: a generational or ephemeral garbage collector is now
8 the default on the PowerPC platform (both Linux and Darwin). The
9 old Cheney (stop and copy) collector is a build-time option.
10 (thanks to Cyrus Harmon, after Raymond Toy)
11 * minor incompatible change: the method by which SBCL finds its
12 contributed modules has changed; it no longer relies on symbolic
13 links from an $SBCL_HOME/systems directory, but searches directly
14 in the subdirectories of $SBCL_HOME.
15 * enhancement: the dynamic heap size on the Linux/PPC platform is
16 markedly larger, even using the older Cheney garbage collector.
17 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
18 certain complicated string types. (reported by Gary King)
19 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
20 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
21 * fixed bug: DOCUMENTATION on structures no longer signals an
22 error if no structure type of the right name exists. (reported by
24 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
25 applicable non-standard primary or :AROUND method on
26 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
27 no longer cause unbound variable errors. (reported by Kevin Reid)
28 * fixed bug: metacircle resolution in cases where methods have slots
29 added before the slots from STANDARD-METHOD. (reported by Jean
31 * fixed bug: the Power PC assembly code for calling into lisp
32 sometimes computed its return address wrongly (depending on the
33 15th bit of the address, fixed at link time). This used to
34 manifest itself in a segmentation violation while building PCL.
35 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
36 many others over the years)
37 * fixed bug: ROOM no longer reports silly numbers for stack usage if
38 the stack pointer (treated as a signed integer) is negative.
39 (thanks to Peter van Eynde)
41 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
42 * new platform: experimental support for the Windows operating
43 system has been added. (thanks to Alastair Bridgewater)
44 * fixed several bugs in and robustified the PPC FFI (including
45 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
46 * bug fix: allow non-simple string symbol names (reported by Paul
48 * bug fix: interrupt handling on NetBSD (thanks to Richard M
50 * bug fix: saving a core corrupted callbacks on x86/x86-64
51 * bug fix: closed a loophole in metacircularity detection and
52 grounding in the PCL implementation of CLOS.
53 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
54 (reported by tomppa on #lisp)
55 * bug fix: clear the direction flag on Lisp -> C transitions, as
56 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
57 (reported by Andrej Grozin and Hendrik Maryns)
58 * optimization: major improvements to GC efficiency on GENCGC platforms
59 * optimization: faster implementation of EQUAL
60 * optimization: emit more efficient opcodes for some common
61 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
62 * optimization: several other minor code-generation improvements on x86-64
63 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
65 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
66 * minor incompatible change: (SETF CLASS-NAME) and (SETF
67 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
68 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
69 by ANSI as a generic function, and for consistency (SETF
70 GENERIC-FUNCTION-NAME) is treated likewise.
71 * fixed bug #233.b: make constraint propagation notice when a variable
72 value is changed after it is referenced but before it is used
73 * fixed bug #296: no more arbitrary behaviour from filenames with
74 odd characters as --load arguments. (reported by Adam Warner)
75 * fixed bug #390: :CHARACTER-SET pathname components now work as
76 expected. (reported by Tim Daly Jr)
77 * fixed bug #391: complicated :TYPE intersections in slot
78 definitions no longer cause an error in PCL internals.
79 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
80 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
81 returning the number of octets which would be written to the
82 file-stream. (thanks to Robert J. Macomber)
83 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
84 arguments to the internal stream functions. (thanks to David
86 * bug fix: stack exhaustion is now handled on the x86/SunOS
87 platform. (thanks to Daisuke Homma)
88 * bug fix: more accurate ROOM results on GENCGC platforms
89 * optimization: improved type inference for arithmetic-for
90 index variables in LOOP
91 * optimization: faster floating-point SQRT on x86-64
92 * fixed some bugs revealed by Paul Dietz' test suite:
93 ** DOCUMENTATION returns NIL instead of "" for method combinations
94 that don't have a docstring
96 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
97 * minor incompatible change: (SETF CLASS-NAME) and (SETF
98 GENERIC-FUNCTION-NAME) are no longer generic functions, and
99 therefore are not customizeable by user code (as seems to be at
100 least permitted and maybe required by AMOP). As a consolation,
101 however, the SBCL implementation of these functions now calls
102 REINITIALIZE-INSTANCE as specified by AMOP.
103 * bug fix: slot-definition documentation is propagated as per ANSI
104 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
105 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
106 argument, as do eslotd initialization methods. (from Pascal
107 Costanza's "Closer" project)
108 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
109 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
111 * bug fix: it is now possible to have more than one subclass of
112 STANDARD-GENERIC-FUNCTION without causing stack overflow.
113 (reported by Bruno Haible, Pascal Costanza and others)
114 * bug fix: the dependent update protocol now works for generic
115 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
117 * bug fix: condition-class instances corresponding to
118 DEFINE-CONDITION forms are now created eagerly. (reported by
119 Kalle Olavi Niemitalo on comp.lang.lisp)
120 * bug fix: floating point printing is more accurate in some
121 circumstances. (thanks to Simon Alexander)
122 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
123 merged with *DEFAULT-PATHNAME-DEFAULTS*.
124 * bug fix: callbacks on OS X now preserve stack-alignment.
125 (thanks to Cyrus Harmon)
126 * enhancement: the x86-64 disassembler is much better at
127 disassembling SSE instructions. (thanks to Lutz Euler)
128 * enhancement: CHECK-TYPE on a variable now allows type-inference
129 (thanks to Vincent Arkesteijn)
130 * optimization: improved performance of EUC-JP external format.
131 (thanks to NIIMI Satoshi)
132 * optimization: performance improvements to IO on file streams of
133 :ELEMENT-TYPE CHARACTER
134 * optimization: much faster memory allocation on x86-64
135 * optimization: faster garbage collections (latency and throughput)
137 * optimization: faster bignum subtraction and division on x86 and x86-64
138 (thanks to Lutz Euler)
139 * optimization: more accurate type-inference for loops that use a
140 floating point index variable or a negative step.
142 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
143 * bug fix: add a workaround to SBCL looping infinitely at startup on
144 Linux kernels with apparently buggy implementations of personality().
145 (thanks to Svein Ove Aas)
146 * bug fix: Unicode symbols are correctly printed in LDB backtraces
147 (thanks to David Lichteblau)
148 * bug fix: local bindings shadow global symbol macros for
149 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
150 * optimization: non-open coded uses of numeric comparison operators
151 (e.g. >) no longer cons when called with more than one parameter
152 on platforms supporting dynamic-extent allocation.
153 * enhancement: saving cores with foreign code loaded is now supported
154 on MIPS/Linux in addition to the previously supported platforms.
155 * bug fix: FIND-RESTART now tests for activity, not applicability when given
156 a restart object as identifier. (reported by Helmut Eller for CMUCL)
157 * bug fix: division by zero in sb-sprof when no samples were collected
158 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
159 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
160 (thanks to Alexander Kjeldaas)
161 * new feature: ignoring the return values of destructive functions
162 like NREVERSE signals a compile-time style-warning.
163 (thanks to Kevin Reid)
164 * new feature: the alignment of alien structure fields can be
165 explicitly specified. (thanks to Cyrus Harmon)
166 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
167 and dump core on SIGQUIT
169 ** incompatible change: threads do not inherit values of specials
170 from their parents (see manual)
171 ** bug fix: threads stacks belonging to dead threads are freed by the
172 next exiting thread, no need to gc to collect thread stacks anymore
173 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
174 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
175 ** bug fix: dynamic variable and thread start related gc lossage
176 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
178 * fixed some bugs revealed by Paul Dietz' test suite:
179 ** SUBTYPEP is slightly more accurate on heinously complicated
180 CONS types where some of the members have uncertain (in the
181 NIL, NIL sense) type relationships to each other.
183 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
184 no longer purified unless :PURIFY T is explicitly specified.
185 ** Non-purified cores are significantly smaller than before
187 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
188 * new feature: timers based on Zach Beane's excellent timer package
189 * added support for the following external formats: koi8-u,
190 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
191 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
192 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
193 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
194 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
195 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
196 * incompatible change: a threaded SBCL will no longer revert to
197 non-threaded mode on non-NPTL systems, but refuse to start entirely.
198 * bug fix: interrupts are disabled until startup is complete; no
199 more sigsegvs when receiving a signal to soon
200 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
202 * bug fix: add a workaround for the memory randomization features in
203 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
204 workaround will only be in effect on systems with the proc filesystem
206 * bug fix: printing objects of type HASH-TABLE signals a
207 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
209 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
210 have been running for over 50 days. (reported by Gilbert Baumann)
211 * bug fix: the logic for getting names of functions gets less
212 confused when confronded with alternate-metaclass
213 funcallable-instances. (reported by Cyrus Harmon)
214 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
215 consistent, even on internal alternate-metaclass objects.
216 * bug fix: flush closure information collected by physical
217 environment analysis prepass before the main pass. (bug reported
219 * bug fix: compiler pack phase does not modify a hashtable, which is
220 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
221 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
222 may be expanded. (reported by Alexander <malishev> on c.l.l)
223 * bug fix: no more style-warnings when compiling code using LAST
224 under high-SPEED low-SPACE settings. (reported by David Wallin
226 * fixed some incompatibilities between SBCL's MOP and the MOP
228 ** the METAOBJECT class is now implemented;
229 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
230 STANDARD-OBJECT, as required;
231 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
232 now compatible (as required by VALIDATE-SUPERCLASS); there
233 remains a consistency requirement over the presence or absence
234 of the FUNCTION class in the superclass list of finalized
235 classes; see the manual for more details;
236 ** the :AROUND method for COMPUTE-SLOTS on
237 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
238 requested slot ordering.
240 ** bug fix: parent thread now can be gc'ed even with a live
242 ** bug fix: binding a special with PROGV to no value is not
243 the same as that symbol not having been bound (thanks to
245 ** bug fix: binding specials is thread safe (thanks to
247 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
248 and SB-SPROF do not die with 'no handler for signal XX in
249 interrupt_handle_now(..)' anymore
250 ** bug fix: WITH-TIMEOUT works with multiple running threads
251 * fixed some bugs revealed by Paul Dietz' test suite:
252 ** ENSURE-GENERIC-FUNCTION should take a method class object for
253 the :method-class keyword argument.
255 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
256 * new port: the Solaris operating system on x86 processors is now
257 mostly supported, though some rough edges in the environment
258 remain. (thanks to Daisuke Homma)
259 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
260 space for its heap. (thanks to Thiemo Seufer)
261 * optimization: SBCL on MIPS platforms now supports dynamic-extent
262 closures. (thanks to Thiemo Seufer)
263 * minor incompatible change: eof selects abort in the debugger.
264 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
265 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
267 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
268 deprecated, and will go away in a future revision of SBCL.
269 * minor incompatible change: GC-ON and GC-OFF are no longer
270 implemented with a counter, it does not matter how many times gc
271 is switched on or off
272 * bug fix: discriminating functions for generic function classes
273 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
274 make invalid assumptions about method precedence order. (reported
276 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
277 platforms. (thanks to Thiemo Seufer)
278 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
279 * bug fix: correct pathname printing with printer escaping is on.
280 (thanks to Kevin Reid)
281 * bug fix: complex VOP definitions in "user-space" no longer trigger
282 package locks. (reported by Zach Beane)
283 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
284 for funcallable-instance functions, and is no different from
286 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
287 characters in the current readtable. (reported by Nicholas Neuss)
288 * bug fix: SUBTYPEP on various CONS types returns more a more
289 accurate acknowledgment of its certainty.
290 * optimizations: REMOVE-DUPLICATES now runs in linear time on
291 lists in some cases. This partially fixes bug 384.
292 * flush all standard streams before prompting in the REPL and the
294 * bug fix: signal handling and triggering gc do not conflict
295 directly anymore, in particular a high frequency sb-sprof does
296 not prevent gc from running
297 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
298 approximation for timezone and DST information between the
299 universal time epoch and the smallest negative 32-bit time_t.
300 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
301 year 1899 so long as the encoded time is non-negative.
302 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
303 the correct answer for non-constant rotate amounts when performing
304 an inline 32-bit rotation.
306 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
307 there is only one thread in the session
308 ** bug fix: memory leak for streams created in one thread and
309 written to in another
310 ** bug fix: lockup when compiled with gcc4
311 ** bug fix: race that allows the gc to be triggered when gc is
313 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
314 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
316 ** bug fix: finished threads are gc'ed properly
317 * fixed some bugs revealed by Paul Dietz' test suite:
318 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
319 has arguments with a different set of applicable methods from
320 the orignal arguments.
321 ** The type error thrown by MAP now has a correct expected-type
323 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
324 name a compiled function.
325 ** Three MISC tests where a large bignum was improperly coerced to
326 a float that couldn't represent that bignum during type
327 derivation were fixed.
328 ** SUBTYPEP can now handle types involving the negation of a
329 list-form FUNCTION type.
330 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
331 as (COMPLEX (AND RATIO (NOT FIXNUM))).
332 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
334 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
335 * New feature: Experimental support for bivalent streams: streams
336 opened with :element-type :default now allow character and binary
337 (unsigned-byte 8) I/O
338 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
339 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
341 * bug fix: no more highly sporadic "couldn't check whether ~S is
342 readable" when reading a stream and an interrupt hits in the middle
343 of a select system call
344 * compiler better recognizes complex arrays (reported by Eduardo
346 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
347 for variables on SBCL built with linkage-tables. (reported by Luis
349 * various error reporting improvements.
350 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
351 (Thanks to Thiemo Seufer)
352 * bug fix: nested reader invokations work correctly
353 * bug fix: it is possible to have simultaneous references to foreign
354 code and foreign data with the same name.
356 ** added x86-64 support
357 ** incompatible change: the threading api now works with thread
358 objects instead of thread ids
359 ** bug fix: threads are protected from signals and interruption when
360 starting up or going down
361 ** bug fix: a race where an exiting thread could lose its stack to gc
362 ** bug fix: don't halt on infinite error in threads if possible
363 ** fixed numerous gc deadlocks introduced in the pthread merge
364 ** bug fix: fixed thread safety issues in read and print
365 ** bug fix: debugger doesn't hang on session lock if interrupted at
366 an inappropriate moment
367 ** bug fix: run-program is now thread safe(r)
368 ** bug fix: inner with-recursive-lock no longer releases the mutex
369 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
370 * fixed some bugs revealed by Paul Dietz' test suite:
371 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
372 EXPECTED-TYPE slots filled.
373 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
375 ** MAKE-CONDITION accepts classes as type-designators.
376 ** COMPILE may never return NIL.
377 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
378 range before calling Unix time functions
380 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
381 * numerous signal handling fixes to increase stability
382 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
383 * minor incompatible change: we now correctly canonize default
384 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
385 as per the MOP, rather than the historical (INITARG INITFUNCTION
386 INITFORM). (reported by Bruno Haible)
387 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
388 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
389 for more information.
390 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
391 pathname is a directory pathname.
392 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
393 * dynamic space size on PPC has been increased to 768Mb. (thanks to
395 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
396 :METACLASS argument in addition to a class name. (reported by
397 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
398 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
399 (reported by Bruno Haible; patch from Gerd Moellmann)
400 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
402 * bug fix: more cleanups to the floating point exception handling on
403 x86-64 (thanks to James Knight)
404 * bug fix: the compiler does not try to constant fold calls of
405 COERCE and BIT-* functions when they return freshly constructed
406 objects. (reported by Nikodemus Siivola and Paul Dietz)
407 * optimization: improved the MIPS versions of generic (in the
408 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
409 * optimization: direct conversion of (unsigned-byte 32) to floats on
410 the PowerPC platform.
411 * optimization: structure instances with raw slots now use less
412 memory, and probably show better memory locality. (thanks to
414 * optimization: DYNAMIC-EXTENT declarations for lists and closures
415 are treated as requests for stack allocation on the x86-64,
416 Alpha-32, PPC and SPARC platforms.
417 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
418 the wrong file descriptor; implementation of SOCKET-OPEN-P.
419 (thanks to Tony Martinez)
421 ** gcing a dead thread can no longer lead to lockups
422 ** threads block signals until they are set up properly
423 ** errno is no longer shared by threads
424 ** interrupt-thread restores the eflags register on x86
425 ** fixed some lockups due to gc/thread interaction
426 * fixed some bugs revealed by Paul Dietz' test suite:
427 ** invalid dotted lists no longer raise a read error when
429 ** signal an error if a symbol that names a declaration is used
430 as the name of a type, or vice versa
431 ** allow using the (declare (typespec var*)) abbreviation for
432 (declare (type typespec var*)) with all type specifiers
433 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
434 ** always return NIL from PPRINT-POP when OBJECT is NIL
435 ** don't signal errors when pretty-printing malformed LABELS,
436 FLET or MACROLET forms
437 ** declarations in a DOLIST body are also in scope for the
439 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
441 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
444 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
445 * fixed cross-compiler leakages that prevented building a 32-bit
446 target with a 64-bit host compiler.
447 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
448 opened with :IF-EXISTS :OVERWRITE.
449 * fixed bug 281: error for an invalid qualifier in a short-form method
450 combination method is not signalled until the faulty method is called.
451 * bug fix: iteration variable type inferrer failed to deal with open
452 intervals. (reported by Alan Shields)
453 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
454 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
455 or more runtime options were provided to the sbcl binary.
456 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
457 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
458 * optimization: there's now a fast-path for fixnum arguments in the
459 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
460 * optimization: the code generated on x86-64 is more compact thanks
461 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
462 * bug fix: floating-point exception handling now partly works on
463 x86-64. (Thanks to James Knight)
464 * improvement to the MIPS backend from Thiemo Seufer: C-style
465 64-bit long long arguments and return values to alien functions
467 * fixed some bugs revealed by Paul Dietz' test suite:
468 ** the type-error signalled from WARN has a filled-in DATUM slot.
469 ** the type-error required when a stream is not associated with
470 a file has the stream as its datum.
471 ** type-errors on single-floats on x86-64 no longer have
472 :INVALID-OBJECT as the datum
473 ** the type-errors signalled for invalid function names now have
474 a correct expected type
475 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
476 for structures defined with a :TYPE. Documentation strings for
477 typed structures are no longer immediately discarded
478 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
479 broadcast streams and synonym streams. FILE-LENGTH now also works
480 on broadcast streams.
482 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
483 * incompatible change: the --noprogrammer option, deprecated since
484 version 0.7.5, has been removed. Please use the equivalent
485 --disable-debugger option instead.
486 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
488 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
489 inoperational for a while now) has been completely removed.
490 * null lexical environments are now printed as #<NULL-LEXENV>,
491 significantly reducing the amount of clutter in typical backtraces.
492 * documentation on weak pointers, finalization, and after GC hooks
493 has been added to the manual.
494 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
495 as other specialized array types, is much faster. SUBSEQ and
496 COPY-SEQ on such arrays have also been sped up.
497 * optimization: EQL is now more efficient when at least other argument
498 is known to be of type (OR FIXNUM (NOT NUMBER)).
499 * fixed bug: the runtime is now less vulnerable to changes in the
500 size of the SBCL object on OS X, and virtual memory is reserved for
501 all spaces that need to be at a fixed address.
502 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
503 * fixed bug: finalizers and after GC hooks that cause consing are now
505 * fixed bug: compiler error messages and summaries are now printed to
506 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
507 * fixed inference of the upper bound of an iteration variable.
508 (reported by Rajat Datta).
509 * fixed bug 211e: calling local functions with duplicated constant
510 keyword argument no longer causes a bogus style warning about an
512 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
513 ftype declaration to be disregarded. (reported by Dave Roberts)
514 * fixed bug 373: caused by erronous compilation of references to alien
515 variables in the runtime on ppc/darwin.
516 * fixed bug 376: CONJUGATE type deriver.
517 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
518 (reported by Baughn on #lisp)
519 * a cross-compiler bug on non-x86 platforms has been identified and
520 fixed. (thanks to Bruno Haible)
521 * improvements to the MIPS runtime code for increased stability.
522 (thanks to Thiemo Seufer)
523 * increased the maximimum compact environment size to allow
524 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
525 * partial workaround for bug 135: don't name the function we're
526 calling for hairy cases of EVAL, so as not to accumulate one environment
527 entry per call to EVAL. (reported by Kevin Reid)
528 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
529 * optimization: type testing for non-vector arrays should be faster.
530 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
532 * bug fix: setting 31st element of a bit vector to zero did not work
534 * bug fix: redefining a class definition which failed due to a
535 previous accessor / function clash now works (but see BUGS entry
536 #380 for more problems in this area). (thanks to Zach Beane)
537 * the long form of DEFINE-METHOD-COMBINATION disables method group
538 checking when given a single method group with pattern *. (thanks
540 * on x86 compiler supports stack allocation of results of simple
541 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
542 * support for building and running on Mac OS X 10.4 "Tiger" has been added
543 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
544 * fixed some bugs related to Unicode integration:
545 ** the restarts for recovering from input and output encoding
546 errors only appear when there is in fact such an error to
548 * fixed some bugs revealed by Paul Dietz' test suite:
549 ** MISC.549 and similar: late transformation of unsafe type
550 assertions into derived types caused unexpected code
552 ** SCALE-FLOAT type deriver is less wrong.
553 ** type derivers for EXP, LOG and similar functions compute result
554 types for complex arguments better.
555 ** (MISC.563) CONJUGATE type deriver works for very restricted
557 ** out-of-line type testers for character strings are available.
558 ** EQUAL compiler transform understands specialness of objects
560 ** accessing double-floats stored on the stack now works on x86-64.
561 ** debugger internals could sometimes create invalid lispobjs,
562 resulting in GC crashes.
563 ** MISC.548: type check weakening can convert required type into
565 ** initialization forms for bindings are not in scope of free special
568 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
569 * incompatible change: thread support for non-NPTL systems has
570 been removed - locking is buggy and unreliable. A threaded
571 SBCL build will now warn at startup and refuse to create
572 new threads, unless futex support is detected in the kernel
573 * incompatible change: the top level REPL now has only an ABORT
574 restart associated with it, not TOPLEVEL and ABORT as it used to.
575 TOP and TOPLEVEL are now available as debugger commands for
576 returning to the top level.
577 * incompatible change: forms evaluated in the REPL now use the
578 global optimization policy.
579 * incompatible change: user- and system-initialization files are
580 no longer processed with LOAD, but by READ and EVAL; hence the
581 global optimization policy, startup package, readtable, etc,
583 * The .fasl file format number has been incremented because of
584 various incompatible changes.
585 * internal entry point details and argument counts no longer appear
586 in backtraces unless explicitly requested by setting
587 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
588 * built-in and standard functions no longer have names like "top
589 level local call to FOO".
590 * fixed bug 32: functions defined in non-null lexical environments
591 now have more legible printed representation
592 * fixed bug 33: functions defined in non-null lexical environemnts
593 are now more amenable to inspection by INSPECT.
594 * workaround for bug 354: XEPs no longer appear in backtraces unless
595 explicitly requested.
596 * fixed bug: receiving the signal which results from attempting to
597 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
598 SIGBUS on other *BSDs) on architectures where the C stack is also
599 the Lisp stack (x86 and x86-64) from foreign code no longer leads
600 to debugger confusion or wild instability. (reported by Cheuksan
602 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
603 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
604 (reported by Lutz Euler)
605 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
606 compiled code. (reported by Paul Dietz)
607 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
608 specialized parameter to a method to something that is not TYPEP
609 the specializer is now possible.
610 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
611 face of package deletion.
612 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
613 pathname. (reported by David Tolpin on c.l.l)
614 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
615 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
616 STRING-STREAM and FILE-STREAM, respectively.
617 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
618 than previously; in addition, its test suite is now run on build.
619 (thanks to Luke Gorrie)
620 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
621 * optimization: added a immediate representation for single-floats
623 * fixed some bugs revealed by Paul Dietz' test suite:
624 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
625 ** attempting to create a package with a colliding nickname causes
626 correctable errors to be signalled.
627 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
628 ** several x86-64 backend bugs related to sign-extension of immediate
631 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
632 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
633 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
635 * fixed loading of multiply forward-referenced layouts.
636 (thanks to Cheuksan Wang)
637 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
638 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
639 (see COMPILE-FILE documentation for details of :PRINT option)
640 * fixed bugs 19 and 317: fixed-format floating point printing is
641 more accurate. This also fixes a bug reported by Adam Warner
642 related to the ~@F format directive.
643 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
645 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
646 dispatch table if the from-char is a dispatch macro character.
647 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
648 by the wordsize no longer ignore the last word. (reported by Lutz
650 * fixed bug in type checking of dynamic-extent variables. (reported
652 * optimization: sequence traversal functions use their freedom to
653 coerce function designators to functions.
654 * optimization: code with many calls to CLOS methods specialized on
655 CLOS classes has had redundant type checks removed.
656 * optimization: added declarations to speed up operations that access
657 the internal character database (for example STRING-UPCASE)
658 * optimization: comparison operations between floats and sufficiently small
659 fixnums no longer create extra rationals
660 * fixed some bugs related to Unicode integration:
661 ** portions of multibyte characters at the end of buffers for
662 character-based file input are correctly transferred to the
663 start of the buffer at the next read.
664 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
665 passing it through to OPEN.
666 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
667 argument given to internal calls to OPEN.
668 ** the built-in comment readers (introduced by character sequences
669 ";" and "#|") are more forgiving to encoding errors; they will
670 STYLE-WARN and then attempt to resync the stream at a character
671 boundary. (thanks to Teemu Kalvas)
672 * fixed some bugs in the x86-64 port:
673 ** Negative short int return values from c-calls are sign-extended
675 ** The stack is aligned to 16-bytes for c-calls, as required by
676 the ABI. (thanks to Cheuksan Wang)
677 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
678 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
679 for enums. (thanks to Vincent Arkesteijn)
680 ** Multiple small optimizations and bugfixes for floating point
682 * fixed some bugs revealed by Paul Dietz' test suite:
683 ** Space, Tab, Linefeed, Return and Page have the invalid
684 secondary constituent character trait.
685 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
687 ** WITH-INPUT-FROM-STRING should only update the index place on
689 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
691 ** Bit-array operations (BIT-AND and similar) worked incorrectly
692 with one-dimensional arrays with fill pointers.
693 ** TYPE-OF failed on a complex with an integer realpart and a
695 ** compiler failure during type inference for the code of form
696 (IF (EQL X (THE ...)) ...) (MISC.535).
698 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
699 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
700 platform. The port supports 61-bit fixnums, large memory spaces
701 and reloading shared object files.
702 * enhancement: saving cores with foreign code loaded is now
703 supported on ppc/Darwin in addition to the previously supported
705 * enhancement: the statistical profiler now walks deeper into the
706 call stack for more meaningful call-graphs and accrued time
707 reports (x86/x86-64 only). It also now reports time spent in
709 * enhancement: it is now possible to trace most individual methods
710 of a generic function in addition to tracing the generic function
712 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
714 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
715 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
716 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
717 produces an error. (thanks to Vincent Arkesteijn)
718 * bug fix: NAMESTRING on pathnames with :WILD components in their
719 directories works correctly. (thanks to Artem V. Andreev)
720 * fixed bug 125: compiler preserves identity of closures. (reported
722 * bug fixed: functions with &REST arguments sometimes failed with
723 "Undefined function" when compiled with (DEBUG 3). (reported by
725 * bug fix: overflow during compiling of setting element of a bit
726 vector with constant index and value. (reported by Timmy Douglas)
727 * build fix: fixed the dependence on *LOAD-PATHNAME* and
728 *COMPILE-FILE-PATHNAME* being absolute pathnames.
729 * on x86 compiler partially supports stack allocation of dynamic-extent
731 * GO and RETURN-FROM do not check the extent of their exit points
732 when compiled with SAFETY 0.
733 * fixed some bugs related to Unicode integration:
734 ** encoding and decoding errors are now much more robustly
735 handled; it should now be possible to recover even from invalid
736 input or output to the terminal. (thanks to Teemu Kalvas)
737 ** provided a first cut at implementing STRING-TO-OCTETS and
738 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
739 ** altered the SB-MD5 contributed module slightly, changing the
740 interface just enough for it to be supportable for builds where
741 lisp characters are not eight bits.
742 * fixed some bugs revealed by Paul Dietz' test suite:
743 ** the FORMATTER-generated functions for ~V[ conditionals require
744 the correct number of arguments.
745 ** READ-FROM-STRING returns the mandated second value when applied
746 to displaced strings.
747 ** the #\Rubout and #\Backspace characters are treated as invalid
748 constituent characters by the tokenizer.
750 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
751 * new feature: reloading changed shared object files with
752 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
753 * new feature: references to foreign variables and functions
754 can now be compiled and loaded before the corresponding shared
755 object file is loaded, as long as the foreign definitions are
756 available at runtime.
757 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
758 supported. (thanks to Dan Debertin)
759 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
760 just keywords. (thanks to Vincent Arkesteijn)
761 * fixed bug #331: structure-class instances corresponding to
762 DEFSTRUCT forms are now created eagerly.
763 * fixed bug #345: backtraces from calls to undefined functions work
764 on x86 as well. Related bug #61 is now also partially fixed on x86
765 (backtraces from throws to unknown catch tags.)
766 * bug fix: lambda-list parsing is now stricter vrt. order and number
767 of lambda-list keywords.
768 * bug fix: as specified by AMOP, an error is signalled if a
769 class-option appears multiple times in a DEFCLASS form. (reported
771 * bug fix: RANDOM can be compiled when the compiler derives the type
772 of its numeric argument as a disjoint set of small integers.
773 (reported by Paul Dietz)
774 * bug fix: starting a core saved with shared objects loaded when
775 those objects are not available no longer causes threaded SBCL to
776 hang. (reported by Sean Ross)
777 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
779 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
780 argument, which must always be NIL. (reported by Kalle Niemitalo)
781 * bug fix: printing 1.0d+23 no longer results in an error.
782 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
783 * bug fix: structure slot setters preserve evaluation order. (thanks
785 * fixed some bugs related to Unicode integration:
786 ** RUN-PROGRAM can allow its child to take input from a Lisp
787 stream. (reported by Stefan Scholl)
788 ** ASDF-INSTALL successfully downloads .tar.gz files in all
789 locales. (reported by Ken Causey)
790 * fixed some bugs revealed by Paul Dietz' test suite:
791 ** INCF, DECF and REMF evaluate their place form as specified in
793 ** FORMATTER expands ~{ ~} iteration directives with V or #
794 parameters correctly.
795 ** FORMATTER deals with the ~@[ ~] conditional directive where the
796 consequent uses no arguments correctly.
797 ** the system has a partial understanding of the (COMPLEX RATIO)
799 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
802 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
803 * new feature: a build-time option (controlled by the :SB-UNICODE
804 keyword feature, enabled by default) for building the system with
805 support for the entire 21-bit character space defined by the
807 * new feature: the system now has rudimentary external-format
808 support; the primary user-visible change at this time is that
809 characters with the high bit set (such as lower-case-e-acute) will
810 print correctly to a terminal in a UTF-8 environment.
811 * minor incompatible change: BASE-CHAR no longer names a class;
812 however, CHARACTER continues to do so, as required by ANSI.
813 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
814 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
815 has been moved to the SB-EXT package (temporarily re-exported from
817 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
818 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
820 * fixed bug #351: better error-handlind and reporting for malformed
822 * fixed bug #350: bignum-printing is now more memory-efficient,
823 allowing printing of very large bignums, eg. (expt 2 10000000).
824 (reported by Bruno Haible)
825 * fixed bug #302: better primitive-type selection for intersection
827 * fixed bug #308: non-graphic characters now all have names, as
828 required. (reported by Bruno Haible)
829 * bug fix: redefining a class with different superclasses now correctly
830 removes it from the direct-subclasses of its previous superclasses.
831 (reported by David Morse)
832 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
833 new value now works. (reported by Bruno Haible)
834 * bug fix: correct canonicalization of multiple non-standard slot
835 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
836 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
837 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
838 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
839 now exists, an signals an error.
840 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
841 during macroexpansion for non-iteration variables as well. (reported
842 by Bruno Haible for CMUCL)
843 * bug fix: Cyclic structures and unprintable objects in compiler
844 messages no longer cause errors. (reported by Bruno Haible)
845 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
846 and READ-FROM-STRING all now return a primary value of NIL if
847 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
848 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
849 (reported by Bruno Haible for CMUCL)
850 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
851 do not designate a condition. (reported by Bruno Haible for
853 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
854 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
855 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
856 permitting resolution in favour of any of the conflicting symbols.
857 (reported by Bruno Haible for CMUCL)
858 * bug fix: EQUAL compiler optimizations is less aggressive on
859 strings which can potentially compare true despite having distinct
860 specialized array element types.
861 * bug fix: unit enumerations can be defined without dividing by
862 zero. (thanks to Vincent Arkesteijn)
863 * FORMAT compile-time argument count checking has been enhanced.
864 (report from Bruno Haible for CMUCL)
865 * a partial workaround for the bug 262: the compiler does not try to
866 inline-expand a local function doing RETURN-FROM from a deleted
867 BLOCK. (thanks to Peter Denno for the bug report and to David
868 Wragg for the simple test case)
869 * fixed some bugs revealed by Paul Dietz' test suite:
870 ** RENAME-PACKAGE allows all package designators as new package
872 ** constraint propagation and lambda variable substitution are
873 more cautious in dealing with partially deleted code.
874 ** compiler sometimes lost reoptimization passes.
875 ** CERROR, given a condition as condition designator, passes its
876 remaining arguments to the continue format control without
878 ** Case-altering FORMAT directives work correctly on non-ASCII
880 ** The REAL type specifier handles bounds outside the floating
881 point ranges without signalling FLOATING-POINT-OVERFLOW.
882 ** Functions with IR1-transformations can create intercomponent
883 references to global functions.
884 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
886 ** FORMAT ~R treats a nil value for its first parameter correctly.
888 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
889 * enhancement: saving cores with foreign code loaded is now
890 supported on x86/NetBSD and sparc/Linux in addition to the previously
892 * bug fix: on some platforms repeated installations caused multiple
893 copies of HTML documentation to be installed -- should not happen
894 any more. (reported by Stefan Scholl)
895 * bug fix: parsing self-recursive alien record types multiple times
896 no longer causes infinite recursion. (reported by Thomas F. Burdick,
897 original patch by Helmut Eller for CMUCL)
898 * bug fix: stack-exhaustion detection works now on NetBSD as well.
899 (thanks to Richard Kreuter)
900 * bug fix: defining classes whose accessors are methods on existing
901 generic functions in other (locked) packages no longer signals
902 bogus package lock violations. (reported by François-René Rideau)
903 * bug fix: special variables as DEFMETHOD parameters no longer have
904 associated bogus type declarations. (reported by David Wragg and
906 * bug fix: read-write consistency on streams of element-type
907 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
908 * bug fix: redefiniton of the only method of a generic function with
909 no DEFGENERIC no longer emits a full WARNING. In addition,
910 redefinition of generic functions with no DEFGENERIC to an
911 incompatible lambda list now signals an error. (thanks to Zach
913 * bug fix: DEFGENERIC now works even when there's a function of the
914 same name in an enclosing lexical environment. (thanks to Zach
916 * fixed compiler failure, caused by instrumenting code during
917 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
918 * optimization: added loop analysis and improved register allocation
919 * fixed some bugs revealed by Paul Dietz' test suite:
920 ** POSITION on displaced vectors with non-zero displacement
921 returns the right answer.
922 ** (SIMPLE-STRING) is a valid type specifier for sequence
924 ** *PRINT-LEVEL* handling for slotless structures is pedantically
926 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
927 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
929 ** The justification version of the FORMAT ~< directive treats
930 non-zero minpad parameter correctly.
932 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
933 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
934 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
935 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
936 the supported interface.
937 * new feature: Single-stepping of code compiled with DEBUG 2 or
938 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
939 * new feature: saving cores with foreign code loaded is now
940 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
941 Timothy Moore's work for CMUCL)
942 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
943 parameters to * instead of NIL if no initform is supplied.
944 (reported by Johan Bockgaard)
945 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
946 correctly when FUNCALL appears as the car of the form. Note:
947 despite this FUNCALL forms are not currently subject to
948 compiler-macro expansion. (port of Raymond Toy's fix for the
949 same from CMUCL, reported by Johan Bockgaard)
950 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
951 (thanks for Teemu Kalvas)
952 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
953 case instead of terminating the iteration (thanks for Julian
954 Squires, Sean Champ and Raymond Toy)
955 * bug fix: incorrect expansion of defgeneric that caused a style
956 warning. (thanks for Zach Beane)
957 * bug fix: slot accessor effective method computation works properly
958 for classes with multiple non-standard applicable methods on
959 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
960 * on x86 compiler supports stack allocation of results of LIST and
961 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
962 CMUCL implementation by Gerd Moellmann)
963 * fixed some bugs revealed by Paul Dietz' test suite:
964 ** FORMAT strings with both the ~<~:;~> form of the justification
965 directive and pretty-printing directives cause an error.
967 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
968 * incompatible change: the internal functions
969 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
970 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
971 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
972 instead of the old functions.
973 * new feature: on platforms where "dladdr" is available foreign
974 function names now appear in backtraces. (based on Helmut Eller's
976 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
977 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
979 * documentation: ASDF manual is now distributed with SBCL.
980 * bug fix: SBCL can now load its contributed modules with REQUIRE
981 even if the system-provided entries have been removed from
982 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
984 * bug fix: backtraces involving undefined functions or assembly
985 routines are more informative. (thanks to Brian Downing)
986 * bug fix: mutually referent alien structures now work correctly.
987 (reported by Rick Taube)
988 * bug fix: structures defined by WITH-ALIEN can be referred to
989 within other definitions in the same WITH-ALIEN.
990 * bug fix: division operators (MOD, TRUNCATE and the like) with
991 constant zero divisors and integer dividends no longer generate
993 * bug fix: provide default methods for INPUT-STREAM-P and
994 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
995 * bug fix: improve the detection and resolution of MOP metacycles
996 (where effective method computation depends on the generic function
997 having its effective method computed). (reported by Bruno Haible)
998 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
999 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1000 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1001 * bug fix: pathnames with relative directory components can be
1002 represented relative to default pathnames.
1003 * optimization: in taking the GCD of bignums, reduce the two bignums
1004 to approximately the same size (using Euclid's algorithm) before
1005 applying the more sophisticated binary GCD. (thanks to Juho
1007 * optimization: COUNT on bitvectors now operates word-at-a-time.
1008 * optimization: ASH with a positive, but not necessarily constant,
1009 (leftwards) shift, when in a modular context, is compiled to a
1011 * fixed some bugs revealed by Paul Dietz' test suite:
1012 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1013 if the corresponding argument is NIL.
1014 ** FORMAT directives accepting a minpad parameter treat negative
1016 ** literal commas as character parameters to FORMAT directives are
1018 ** literal spaces directly after ~<Newline> directives within a
1019 format-logical-block (~:< ~@:>) do not induce :FILL-style
1020 conditional newlines.
1021 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1022 as specified: it no longer includes conditional newlines).
1023 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1025 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1026 :PER-LINE-PREFIX argument does not evaluate to a string.
1028 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1029 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1030 the manual for details; for now, package locks can be disabled by
1031 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1032 if no major problems are found then it is likely that they will be
1033 compiled in unconditionally.
1034 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1035 unsupported operators on all platforms. To load a shared library
1036 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1037 object file, link it into a shared library outside of SBCL and
1038 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1040 * bug workaround: ROOM T and the GC were not working together
1041 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1042 reporting facility aren't preserved. That reporting has been
1043 disabled, so now until and unless someone figures out how to make it
1044 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1045 * minor incompatible change: as threatened around sbcl-0.8.0, the
1046 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1047 The symbols are also exported from SB-PCL for backwards
1048 compatibility, but more so than before SB-PCL should be treated as
1049 an implementation-internal package.
1050 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1052 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1053 It is known as of this release not to work on the Alpha, however.
1054 * fixed bug #167: errors signalled due to illegal syntax in method
1055 bodies are now more legible.
1056 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1057 designators and can hence be used with TYPEP.
1058 * fixed bug #333: CHECK-TYPE now ensures that the type error
1059 signalled, if any, has the right object to be accessed by
1060 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1061 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1062 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1064 * fixed bug #334: programmatic addition of slots using specialized
1065 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1066 and :ALLOCATION :CLASS slots.
1067 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1068 float exponents. (rereported by Peter Seibel)
1069 * fixed a bug: #\Space (and other whitespace characters) are no
1070 longer considered to be macro characters in standard syntax by
1071 GET-MACRO-CHARACTER.
1072 * fixed bug: initialization of condition class metaobjects no longer
1073 causes an instance of the condition to be created. (reported by
1075 * fixed bug: it is now possible to have slots such that
1076 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1077 description is neither :INSTANCE nor :CLASS.
1078 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1079 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1080 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1081 non-standard SLOT-DEFINITION-ALLOCATION values.
1082 * fixed bugs: various race conditions handling exiting threads.
1083 CL-PPCRE's thread torture test now passes.
1084 * fixed arguably-a-bug: GC time proportional to number of threads in
1085 system even when most of them are idle
1086 * optimization: improved performance of BIT and SBIT on bit-vectors.
1087 * .fasl file incompatibility: The fasl file version number has
1088 been incremented because of changes associated with package locks.
1090 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1091 * minor incompatible change: the system no longer provides
1092 optimization hints (conditions which are TYPEP
1093 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1094 mode; these hints are still emitted when higher SPEED optimization
1096 * new contrib module: a sampling profiler (profiling by statistical
1097 sampling, rather than by instrumenting functions) is available as
1098 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1099 * the behaviour of the standard function ED is now customizeable by
1100 third parties through a hook variable: see ED's documentation
1101 string for information on the protocol.
1102 * the compiler no longer emits efficiency notes for (FUNCALL X)
1103 when the type of X is uncertain under default optimization
1105 * fixed bug 276: mutating a binding of a specialized parameter to a
1106 method to something that is not TYPEP the specializer is now
1108 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1109 exhibit the required behaviour on the x86 platform. (thanks to
1110 Peter van Eynde, Eric Marsden and Bruno Haible)
1111 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1112 even for difficult arguments. (reported by Peter Graves)
1113 * fixed bug 141a: the backquote printer now descends quoted
1115 * fixed another bug in backquote printing: no more destructive
1116 modification of the form's list structure. (reported by Brian
1118 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1119 move between its address being taken and the call to
1120 interrupt_thread, fixing a crashing race condition.
1121 * the SB-POSIX contrib implementation has been adjusted so that it
1122 no longer exhibits ridiculously poor performance when constructing
1123 instances corresponding to C structs.
1125 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1126 * minor incompatible change: the sb-grovel contrib now treats C
1127 structures as alien (in the sense of SB-ALIEN) objects rather than
1128 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1129 has implications for memory management of client code
1130 (sb-grovel-returned objects must now be manually managed) and for
1131 type safety (alien objects now have full types).
1132 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1133 used to control emission of compiler diagnostics, rather than the
1134 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1135 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1136 quality should be considered deprecated.
1137 * install.sh now installs the user manual as well
1138 * (not quite a new documentable feature, but worth considering in
1139 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1140 beginnings of a semantically meaningful condition hierarchy is
1141 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1143 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1144 designator as the defaults argument.
1145 * fixed bug: Displaced arrays whose displaced-to array has become
1146 too small now cause ARRAY-DIMENSION to signal an error, providing
1147 for safer bounds-checking. (reported by Bruno Haible)
1148 * fixed bug: DEFCLASS slot definitions with identical :READER and
1149 :WRITER names now signal a reasonable error. (reported by Thomas
1151 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1153 * fixed bug: Invalid slot specification errors now print correctly.
1154 (thanks to Zach Beane)
1155 * fixed bug 320: Shared to local slot value transfers in class
1156 redefinitions now happen corrently from superclasses as
1157 well. (reported by Bruno Haible)
1158 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1160 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1161 improper lists correctly. (reported by Bruno Haible)
1162 * fixed bug 313: source-transform for <fun-name> was erroneously
1163 applied to a call of a value of a variable with name <fun-name>.
1164 (reported by Antonio Menezes Leitao)
1165 * fixed bug 307: The obsolete instance protocol ensures that
1166 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1167 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1168 remove dead unknown-values globs from the middle of the stack.
1169 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1170 easier to resume long computations after using *BREAK-ON-SIGNALS*
1171 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1172 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1173 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1174 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1175 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1176 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1178 * fixed a (fairly theoretical) bug in string printing: if
1179 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1180 does not have array-element-type equal to the most general string
1182 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1183 function name. (thanks to Nikodemus Siivola)
1184 * fixed bug: compile-time format string checker failed on
1185 non-closed ~{. (reported by Thomas F Burdick)
1186 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1187 don't warn on legal loop code involving more than one aggregate
1188 boolean. (thanks to Nikodemus Siivola)
1189 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1190 in keyword position to MAKE-PACKAGE was not being reported as
1192 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1193 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1195 * fixed bugs 280 and 312: the checking for multiple definitions in a
1196 file is less likely to become confused by uses of inline
1198 * fixed bug: the #S reader macro performs the keyword coercion
1199 specified for slot names. (reported by Kalle Niemitalo)
1200 * fixed bug: lambda lists may contain symbols whose names start with
1201 & but are not lambda-list-keywords; their occurrence triggers a
1203 * fixed bug 321: define-method-combination argument lambda lists do
1204 not cause invalid code to be generated when &optional or &aux
1205 variables have default values. (reported by Bruno Haible)
1206 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1207 have CLOS classes; this appears also to have fixed reported
1208 instability in stack exhaustion detection.
1209 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1210 MUFFLE-WARNING when no associated restart is present is now
1212 * optimization: rearranged the expansion of various defining macros
1213 so that each expands into only one top-level form in a
1214 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1216 * optimization: used a previously little-used slot in symbols to
1217 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1219 * fixed some bugs revealed by Paul Dietz' test suite:
1220 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1222 ** Fixed an optimization bug related to inheritance of initforms
1223 from local to shared slots.
1224 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1225 ** CAST optimizer forgot to flush argument derived type.
1226 ** print/read consistency on floats is now orders of magnitude
1227 more likely. (thanks also to Bruno Haible for a similar report
1229 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1230 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1231 for objects of type REAL. Make it so.
1232 ** SXHASH is specified (infelicitously) to respect similarity,
1233 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1234 it so. (thanks to Markus Ziegler)
1235 ** on the Alpha, the compiler succeeds in compiling functions
1236 returning a known number of arguments greater than 63.
1237 ** fixed handling of invalid NIL arguments in keyword position
1239 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1241 ** provided a readably-printable representation for RANDOM-STATE
1243 ** ensured that pathnames, where they have a namestring, always
1244 print using #P"..." syntax.
1246 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1247 * Support for the forthcoming 2.0 version of the NetBSD kernel
1248 running on x86 hardware has been added. (thanks to Perry
1249 E. Metzger most immediately, and others for their past work)
1250 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1251 current release version; SBCL's OpenBSD support had been broken
1252 since about the time of OpenBSD's switch to ELF binary format.)
1253 * [placeholder for DX summary]
1254 ** user code with &REST lists declared dynamic-extent, under high
1255 speed or space and low safety and debug optimization policy.
1256 * The manual has been converted to Texinfo format and the debugger
1257 chapter from the cmucl manual has been added.
1258 * A facility has been added to extract documentation strings from
1259 sbcl and store them as Texinfo-formatted snippets for inclusion in
1260 the manual (via Texinfo's @include directive)
1261 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1262 the test case to Dave Roberts)
1263 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1264 pointers. (reported by Sean Ross)
1265 * bug fix: PROFILE output is printed nicely even for large numerical
1266 values. (thanks to Zach Beane)
1267 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1268 greater than 32 handle EOF correctly.
1269 * bug fix: on X86 an immediate argument of the IMUL instruction is
1270 correctly printed in disassembly. (thanks to Lutz Euler)
1271 * bug fix: class slots in redefined classes preserve their old
1272 values. (thanks to Bruno Haible and Nikodemus Siivola)
1273 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1274 succeeds. (reported by Marco Baringer)
1275 * fixed some bugs revealed by Paul Dietz' test suite:
1276 ** READ-SEQUENCE now works on ECHO-STREAMs.
1277 ** RATIONALIZE works more according to its specification. (thanks
1280 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1281 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1282 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1283 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1284 should matter to you only if you rebind the printer control
1285 variables and then find you want different bindings in the
1286 debugger than in the ordinary execution of your program.)
1287 * The runtime build system has been tweaked to support building
1288 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1289 assembler and linker. (thanks to Nikodemus Siivola)
1290 * Unbound, undefined, undeclared variables now trigger full
1291 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1292 more often programmer error than deliberate exploitation of undefined
1294 * optimization: the hash algorithm for strings has changed to one
1295 that is less vulnerable to spurious collisions. (thanks to Juho
1297 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1298 needless bounds checking. (thanks to Juho Snellman)
1299 * optimization: implemented multiplication as a modular
1300 (UNSIGNED-BYTE 32) operation on the PPC backend.
1301 * fixed some bugs revealed by Paul Dietz' test suite:
1302 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1304 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1305 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1306 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1308 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1310 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1312 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1313 their output stream on EOF from read.
1314 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1315 have been read to end-of-file.
1316 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1318 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1319 description of determination of which consecutive characters
1321 ** Printing the "Space" character with escaping on now yields "#\\ ",
1322 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1323 ** Reading floating-point numbers with *READ-BASE* set to a number
1324 less than 10 works correctly.
1325 ** Reading floating-point numbers with *READ-BASE* set to a number
1326 more than 10 works correctly.
1327 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1328 the readtable currently in effect.
1330 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1331 * minor incompatible change: parsing of namestrings on a physical
1332 (Unix) host has changed; numbers after the final #\. in a
1333 namestring are no longer interpreted as a version field. This is
1334 intented to be largely invisible to the user, except that the
1335 meaning of the namestring "*.*.*" has changed: it now refers to a
1336 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1337 should usually be replaced by
1338 (make-pathname :name :wild :type :wild :version :wild)
1339 with the added benefit that this is more likely to be portable.
1340 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1341 option to OPEN now signals an error if the file being opened
1342 exists; this may have an impact on existing code.
1343 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1344 signals received, on the PowerPC platforms (both Linux and
1345 Darwin). (thanks to Pierre Mai for pointing out the location of
1347 * several fixes on OS X: The system now builds and runs cleanly on
1348 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1349 (thanks to Brian Mastenbrook)
1350 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1351 second-resolution: integer multiples of 1/3600 between -24 and 24.
1352 (thanks to Vincent Arkesteijn)
1353 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1354 type when called with 1 argument; PEEK-CHAR checked type of
1355 PEEK-TYPE only after having read first character from a
1356 stream. (reported by Peter Graves)
1357 * bug fix: the garbage collector now has much better locality
1358 behaviour, and in particular no longer treats all memory as being
1359 exhausted when many small objects point to each other in a deeply
1361 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1362 recognized as being TYPEP their class.
1363 * bug fix: the PUSHNEW documentation string has been corrected.
1364 (thanks to Vincent Arkesteijn)
1365 * bug fix: defaulting of the value for the last of an atypically
1366 large number of multiple values being bound was not being
1367 performed correctly on the Alpha or PPC platforms
1368 * optimization: implemented multiplication as a modular
1369 (UNSIGNED-BYTE 32) operation on the x86 backend.
1370 * optimization: SEARCH on simple-base-strings can now be open-coded.
1371 (see also contrib/compiler-extras.lisp for inspiration for
1372 teaching the compiler about the Boyer-Moore algorithm).
1373 * value, returned by MAX (and MIN) called with several EQUALP, but
1374 not EQL, arguments now does not depend on compiler settings.
1375 * fixed some bugs revealed by Paul Dietz' test suite:
1376 ** in stack analysis liveness information is propagated from
1377 non-local entry points.
1378 ** pathwise CAST removing failed when the CAST node did not start
1380 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1381 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1383 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1384 host is already defined.
1385 ** RENAME-FILE works on streams instead of signalling an internal
1387 ** PEEK-CHAR uses the current readtable when determining whether
1388 or not a character is whitespace.
1389 ** MERGE-PATHNAMES handles the case when the pathname does not
1390 specify a name while the default-pathname specifies a version.
1391 ** Pathnames now stand a better chance of respecting print/read
1393 ** Attempting to use standardized file system operators with a
1394 pathname with invalid :DIRECTORY components signals a
1396 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1398 ** DIRECTORY on logical pathnames is more correct.
1399 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1400 signal a TYPE-ERROR if their argument is not a stream.
1401 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1402 designator argument does not designate a stream.
1403 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1404 examining the synonym.
1405 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1407 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1408 element-type larger than ([UN]SIGNED-BYTE 32).
1410 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1411 * When built with the :SB-FUTEX feature, threaded builds now take
1412 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1413 for faster/more reliable mutex and condition variable support.
1414 * Incompatible change (but one you probably shouldn't have been using
1415 anyway): the interface and code for arbitrating between multiple
1416 threads in the same user session has been redesigned.
1417 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1418 error when called without an explicit environment argument.
1419 (thanks to Nikodemus Siivola)
1420 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1421 confused about their position. (thanks to Adam Warner and Gerd
1423 * bug fix: Pretty printing backquoted forms with unquotations in the
1424 argument list position of various code constructs such as LAMBDA
1425 now works correctly. (reported by Paul Dietz)
1426 * bug fix: Pretty printing unquotations no longer loses all
1427 stream position information.
1428 * optimization: performance of string output streams is now less
1429 poor for multiple small sequence writes.
1430 * optimization: performance of CSUBTYPEP in the presence of complex
1431 expressions involving CONS and NOT many times has been improved.
1432 (reported by Paul Dietz)
1433 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1435 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1436 streams for the REPL, for the debugger, and so on. (thanks to
1438 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1439 * fixed some bugs revealed by Paul Dietz' test suite:
1440 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1441 is ignored if it is too small, rather than propagating through
1442 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1443 ** extremely complex negations of CONS types were not being
1444 sufficiently canonicalized, leading to inconsistencies in
1446 ** VALUES tranformer lost derived type.
1448 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1449 * fixed a bootstrapping bug: the build process no longer assumes
1450 that the various BOOLE-related constants have the same value in
1451 host and target lisps. (noted by Paul Dietz' test suite on an
1452 SBCL binary built from CLISP)
1453 * The system can now be dynamically linked on the MIPS platform,
1454 which enables dynamic loading of foreign code from Lisp. (thanks
1455 to Ralf Baechle for discussions on the MIPS ABI)
1456 * The system now records debugging information for its own source
1457 files in a filesystem-position-independent manner, relative to
1458 the "SYS" logical host.
1459 * fixed a compiler bug: MV-LET convertion did not check references
1460 to the "max args" entry point. (reported by Brian Downing)
1461 * tweaked disassembly notes to be less confident about proclaiming
1462 some instruction as an LRA. (thanks to Brian Downing)
1463 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1464 now each have their own history, command character, and other
1465 characteristics. (thanks to David Lichteblau)
1466 * fixed some bugs revealed by Paul Dietz' test suite:
1467 ** compiler failure in compiling LOGAND expressions including a
1469 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1470 shift greater than 32.
1471 ** FLUSH-DEST did not mark blocks for type check regeneration.
1472 ** HANDLER-CASE failed to accept declarations in handler clauses
1473 in some circumstances.
1475 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1476 * New code in contrib/sb-introspect (still probably not entirely
1477 stable yet) provides some support for smart Lisp development
1478 environments like SLIME.
1479 * The conditions signalled for errors occurring when loading .fasl
1480 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1481 in a way which should help ASDF recover gracefully.
1482 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1483 stuff has been cleaned up. If you code contrib/ stuff, this might
1484 affect you, and you can look at contrib/README, contrib/STANDARDS,
1485 and/or the 0.8.4.27 diff to check.
1486 * In full calls the compiler now does not generate checks for declared
1487 argument types for all arguments.
1488 * various threading fixes
1489 ** and some experimental patches which didn't make it into
1490 the main tree for this release, but which are shipped in
1491 contrib/experimental-thread.patch as a possible fix for some
1492 failures (deadlock, spinning...) in GC-intensive multithreaded
1494 * fixed PPC build problem (source code incompatibility of different
1495 library versions): added offsetof() hackery which attempts to divine
1496 where glibc maintainers put uc_mcontext today
1497 * fixed bug 282: compiler does not trust type assertions while passing
1498 arguments to a full call.
1499 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1500 &OPTIONAL VALUES type parameter.
1501 * fix bug 214: algorithm for noting rejected templates is now more
1502 similar to that of template seletion. (also reported by rydis on
1504 * fixed bug 141b: printing backquoted information readably and prettily
1505 inserts a space where necessary.
1506 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1507 (CHARACTER 10) are now reported as errors, rather than propagated
1508 as unknown types. (reported by piso on #lisp)
1509 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1510 with values NIL and :ERROR. (thanks to Milan Zamazal)
1511 * fixed bug 191c: CLOS now does proper keyword argument checking as
1512 described in CLHS 7.6.5 and 7.6.5.1.
1513 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1514 longer raise an error; further, using a list as a for-as-arithmetic
1515 counter now raises a meaningful error.
1516 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1517 now understood by sequence creation functions such as MAKE-SEQUENCE
1519 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1520 a STRING-INPUT-STREAM.
1521 * compiler enhancement: SIGNUM is now better able to derive the type
1523 * type declarations inside WITH-SLOTS are checked. (reported by
1525 * fixed some bugs revealed by Paul Dietz' test suite:
1526 ** incorrect optimization of TRUNCATE for a positive first
1527 argument and negative second.
1528 ** compiler failure in let-convertion during flushing dead code.
1529 ** compiler failure while deriving type of TRUNCATE on an
1530 interval, containing 0.
1531 ** ASH of a negative bignum by a negative bignum count now returns
1533 ** intersection of CONS types now canonicalizes properly, fixing
1534 inconsistencies in SUBTYPEP.
1536 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1537 * incompatible change: The --disable-debugger command line
1538 option now clobbers the debugger at a more fundamental
1539 level, by redefining #'INVOKE-DEBUGGER instead of by
1540 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1541 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1542 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1543 enter the debugger REPL and then suffer recursive errors
1544 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1545 while under the new system, BREAK in --disable-debugger mode
1546 terminates the system just as an unhandled error would.
1547 * fixed compiler performance when processing loops with a step >1;
1548 * bug fix: DOCUMENTATION now retrieves generic function
1549 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1550 support has been systematized, and now supports the methods
1551 specified by ANSI, along with a default method and a method for
1552 slot documentation. (reported by Nathan Froyd)
1553 * bug fix: effective methods associated with a generic function are
1554 no longer cached over a change of that generic function's method
1555 combination. (reported by Andreas Fuchs)
1556 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1557 names a non-existent directory. (thanks to Andreas Fuchs)
1558 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1559 the PPC platform, lead to stack corruption; this has been fixed.
1560 (reported by Rainer Joswig)
1561 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1562 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1563 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1564 arithmetic in general, is now much more reliable on the PPC
1566 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1567 platform now returns the right answer.
1568 * optimization: restored some effective method precomputation in
1569 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1570 precomputation is now tunable.
1571 * optimization: compiler-internal data structure use has been
1572 reviewed, and changes have been made that should improve the
1573 performance of the compiler by about 20%.
1574 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1575 simple-base-strings and simple-bit-vectors is improved.
1576 * optimization: the optimization of 32-bit logical and arithmetic
1577 functions introduced in version 0.8.3 on the x86 has been
1578 implemented on the mips, ppc and sparc platforms; an
1579 implementation of the same facility, but for 64-bit arithmetic,
1580 has been added for the alpha.
1581 * microoptimization: the compiler is better able to make use of the
1582 x86 LEA instruction for multiplication by constants.
1583 * bug fix: in some situations compiler did not report usage of
1584 generic arithmetic in (SPEED 3) policy.
1585 * bug 145b fix: compiler used wrong type specifier while converting
1586 MEMBER-types to numeric.
1587 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1589 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1590 index argument now works properly on the Alpha platform.
1591 * bug fix: floating point exception treatment on the Alpha platform
1593 * bug fix: FILE-POSITION works much better on string input and
1594 output streams. (thanks to Nikodemus Siivola)
1595 * bug fix: many threading/garbage collection symptoms sorted.
1596 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1597 might be pseudo-atomic.
1598 * internal change: Stopping for GC is now done with signals not
1599 ptrace. GC is now done in whichever thread wanted it, instead of
1601 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1603 * bug fix: result form in DO is not contained in the implicit
1605 * incompatible change: ICR structure is changed; the value part of
1606 CONTINUATION is now called LVAR; corresponding functions are
1607 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1608 * added type deriver for ISQRT (thanks to Robert E. Brown).
1609 * bug fix: better support for loading from the command line when an
1610 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1612 * fixed some bugs revealed by Paul Dietz' test suite:
1613 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1614 ** ROUND and FROUND now give the right answer when given very
1615 small float arguments.
1616 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1618 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1619 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1620 ** LCM should return a non-negative integer.
1621 ** PARSE-INTEGER returned the index of a terminator instead of the
1622 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1623 ** PARSE-INTEGER returned an incorrect index being applied to a
1625 ** LCM with two arguments of 0 returns 0 rather than signalling
1627 ** unsigned addition of a 32-bit constant with the high bit set no
1628 longer causes an internal compiler error on the x86.
1629 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1630 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1631 with negative last argument.
1632 ** byte specifiers with zero size and position no longer cause
1633 an error during type derivation.
1634 ** bignum multiplication on the Alpha platform now returns the
1636 * porting: The system now builds on SuSE AMD64, although it still
1637 generates a 32-bit binary.
1638 * .fasl file incompatibility: The fasl file version number has
1639 been incremented (because of the changes to internal compiler
1640 data structures referred to above).
1642 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1643 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1644 more accurately, on the Darwin kernel running on PowerPC hardware.
1645 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1646 * Compiler code deletion notes now signal a condition of type
1647 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1648 an associated MUFFLE-WARNING restart.
1649 * The compiler now performs limited argument count validation of
1650 constant format strings in FORMAT, and where appropriate in ERROR,
1651 CERROR and WARN. (thanks to Gerd Moellmann)
1652 * New ASDF-INSTALL contrib can be used for automatic download and
1653 installation of third-party Lisp code from CCLAN or other sites
1655 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1656 which forces another thread to execute a function supplied by the
1658 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1659 now accept and act upon their :ELEMENT-TYPE keyword argument.
1660 (reported by Martin Atzmueller, Edi Weitz)
1661 * bug fix: FILE-POSITION now accepts position designators up to
1662 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1663 is the greater. (thanks to Patrik Nordebo)
1664 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1665 Kalle Olavi Niemitalo)
1666 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1667 printable. (reported by Eric Marsden)
1668 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1669 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1670 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1671 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1672 (thanks to Stig Sandoe)
1673 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1674 UNREAD-CHAR now correctly includes the unread character in the
1675 target sequence. (thanks to Gerd Moellmann)
1676 * bug fix in threaded builds: the system can now be suspended and
1677 resumed by shell job control with minimal disruption.
1678 * bug fixes in times and timezones >2038AD
1679 * better handling of "where is GNU make?" problem in build scripts
1680 (thanks to Nikodemus Siivola)
1681 * new optimization: inside a named function any reference to a
1682 function with the same name is considered to be a self-reference;
1683 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1684 optimization quality.
1685 * new optimization on x86: logical functions and + now have
1686 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1687 used when the result is truncated to 32 bits.
1688 * VALUES declaration is partially enabled.
1689 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1690 * fixed some bugs revealed by Paul Dietz' test suite:
1691 ** The system now obeys the constraint imposed by
1692 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1693 types form a lattice under type intersection.
1694 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1695 ** ASSOC now ignores NIL elements in an alist.
1696 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1697 and (1+ MOST-POSITIVE-FIXNUM) answers.
1698 ** The addition of a method with invalid qualifiers to a generic
1699 function does not cause an error to be signalled immediately;
1700 a warning is signalled, and the error is generated only on
1701 calling the generic function.
1702 * changed .fasl file version number, in part to add type codes for
1703 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1704 obscure ANSI requirements
1706 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1707 * fixed bug 148: failure to inline-expand a local function left
1708 garbage, confusing the compiler.
1709 * fixed bugs 3cd: structure slot readers perform type check if the
1710 slot can have an invalid value (i.e. it is either not initialized
1711 or can be written with a less specific slot writer).
1712 * bug fix: the compiler now traps array references to elements off
1713 the end of an array; previously, the bounds checking in some
1714 circumstances could go off-by-one.
1715 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1717 * type declarations for array element types now obey the description
1718 on the CLHS page "Declaration TYPE", as per discussions on
1719 sbcl-help around 2003-05-08. This means that a declaration
1720 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1721 declaration, all references to BAR will be asserted or assumed
1722 (with THE, so dependent on compiler policy) to involve objects of
1723 type FOO. Note that no such declaration is implied in
1724 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1725 * declared types of functions from the "Conditions"
1726 chapter. (reported by Paul Dietz)
1727 * bug fix: CERROR accepts a function as its first argument.
1728 * bug fix: NTH an NTHCDR accept a bignum as index
1729 arguments. (reported by Adam Warner)
1730 * optimization: character compare routines now optimize comparing
1731 against a constant character. (reported by Gilbert Baumann)
1732 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1733 argument now works properly on the MIPS platform.
1734 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1735 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1736 declared to have a functional type, does not cause an error
1738 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1739 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1740 * fixed bug: if last continuation of a deleted block has a
1741 destination, this destination should be deleted too. (reported by
1743 * fixed a bug in the bootstrap process: the host compiler's values
1744 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1745 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1746 test case from Patrik Nordebo)
1747 * improved the ability of the disassembler on the PPC platform to
1748 provide helpful disassembly notes.
1749 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1750 the class in more cases than previously.
1751 * bug fix: FILE-POSITION now understands :START and :END for
1752 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1753 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1754 8) data. (thanks to David Lichteblau)
1755 * bug fix: it is possible to add a method to a generic function
1756 without lambda list.
1757 * bug fix: reader failed to signal END-OF-FILE inside an
1758 object representation. (reported by Nikodemus Siivola)
1759 * fixed some bugs revealed by Paul Dietz' test suite:
1760 ** LAST and [N]BUTLAST should accept a bignum.
1761 ** condition slot accessors are methods.
1762 ** (VECTOR NIL) is a subtype of STRING.
1764 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1765 * minor incompatible change: some nonsensical specialized lambda
1766 lists (used in DEFMETHOD) which were previously ignored now signal
1768 * minor incompatible change: the system is now aware of the types of
1769 variables in the COMMON-LISP package, and will signal errors for
1770 most violations of these type constraints (where previously they
1771 were silently accepted).
1772 * minor incompatible change: COMPILE-FILE now uses the freedom
1773 afforded (ANSI 3.2.2.3) to use derived function types for
1774 functions defined in the same file. This also permits the system
1775 to warn on static type mismatches and function
1776 redefinition. (Currently it does not work with high DEBUG level.)
1777 * minor incompatible change: VALUES declaration is disabled.
1778 * When issuing notes, the compiler now signals a condition of type
1779 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1780 restart for use in user handlers. It is expected that the
1781 COMPILER-NOTE condition will eventually become a condition
1782 supertype to a hierarchy of note types, which will then be
1783 handleable in a similar fashion. However, at the moment, no such
1784 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1785 but it's an implementation detail, not a classification for the
1787 * Changes in type checking closed the following bugs:
1788 ** type checking of unused values (192b, 194d, 203);
1789 ** template selection based on unsafe type assertions (192c, 236);
1790 ** type checking in branches (194bc).
1791 * A short form of VALUES type specifier has ANSI meaning (it has
1792 increased the number of situations when SBCL cannot perform type
1794 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1795 keywords or constants is permissible.
1796 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1797 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1798 classes. (thanks to Antonio Martinez)
1799 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1800 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1801 argument to a pretty-print stream. Instead, it leaves any such
1802 operations to DESCRIBE-OBJECT methods.
1803 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1805 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1806 lambda lists. (thanks to David Lichteblau)
1807 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1808 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1809 (thanks to Gerd Moellmann)
1810 * fixed bug 246: increased compilation speed of long
1811 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1813 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1815 * DEFCONSTANT now throws a condition of type
1816 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1817 constant to a non-EQL value; CONTINUE and ABORT restarts
1818 respectively change and preserve the value.
1819 * fixed bug 63: The code walker, part of the implementation of CLOS,
1820 is now better at handling symbol macros.
1821 * bug fix: There is no longer an internal implementation type named
1822 CL:LENGTH. (reported by Raymond Toy)
1823 * bug fix: In macro-like defining macros/special operators the
1824 implicit block does not enclose the lambda list.
1825 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1826 enclosed in parentheses) are not suitable as type specifiers, and
1827 their use properly signals an error now.
1828 * bug fix: An argument count mismatch for a type specifier in code
1829 being compiled no longer causes an unhandled error at compile
1830 time, but signals a compile-time warning.
1831 * fixed simple vector readable printing
1832 * bug fix: DESCRIBE takes more care over whether the class
1833 precedence list slot of a class is bound before accessing it.
1834 (reported by Markus Krummenacker)
1835 * bug fix: FORMATTER can successfully compile pretty-printer format
1836 strings which use variants of the ~* directive inside.
1837 * bug fix: SEARCH now applies its TEST predicate to the elements of
1838 the arguments in the correct order. (thanks to Wolfhard Buss)
1839 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1840 in type inference. (thanks to Robert E. Brown)
1841 * bug fix: Reading in symbols with an explicit package name of ""
1842 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1843 * fixed some bugs revealed by Paul Dietz' test suite:
1844 ** NIL is now allowed as a structure slot name.
1845 ** Arbitrary numbers, not just REALs, are allowed in certain
1846 circumstances in LOOP for-as-arithmetic clauses.
1847 ** Multiple class redefinitions before slot access no longer
1848 causes a type error.
1849 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1850 association between the name and a class.
1851 ** Generic functions with non-standard method-combination and over
1852 five methods all of which return constants no longer return NIL
1853 after the first few invocations. (thanks to Gerd Moellmann)
1854 ** CALL-NEXT-METHOD with no arguments now passes the original
1855 values of the arguments, even in the presence of assignment.
1856 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1858 ** DISASSEMBLE works with closures and funcallable instances.
1859 ** ADD-METHOD now returns the generic function, not the new method.
1860 ** FIND-METHOD signals an error if the lengths of the specializers
1861 is incompatible with the generic function, even if the ERRORP
1863 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1864 which its argument is a member.
1865 ** DEFCLASS only redefines the class named by its class-name
1866 argument if that name is the proper name of the class;
1867 otherwise, it creates a new class.
1868 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1869 of the UNBOUND-SLOT condition to the name of the slot.
1870 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1871 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1872 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1873 SLOT-MAKUNBOUND in the specified fashion.
1875 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1876 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1877 cross-compilation host. As a consequence, we can now bootstrap our
1878 way up to SBCL starting with a bare gcc toolchain and human-readable
1879 source code (first the source to CLISP, then the source to SBCL).
1880 * A contributed module containing a partial implementation of the
1881 simple-streams interface has been included. (thanks to Rudi
1883 * A contributed module implementing the RFC1321 Message Digest
1884 Algorithm, known as MD5, has been included.
1885 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1886 no longer has any effect, as the code controlled by this feature
1887 has been deleted. (As far as we know, no-one has ever built using
1888 this feature, and its semantics were confused in any case).
1889 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1890 work on conditions (as required by the ANSI specification),
1891 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1892 expected behaviour on conditions. Users should note, however,
1893 that such behaviour is not required by the ANSI specification,
1894 and so use of this behaviour may render their code unportable.
1895 * fixed some bugs revealed by Paul Dietz' test suite:
1896 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1898 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1899 ** SXHASH on condition objects no longer returns NIL.
1900 ** :ALLOCATION :CLASS slots are better treated; their values are
1901 updated on class redefinition, and initforms inherited from
1902 superclasses are applied.
1903 ** REMOVE-METHOD returns its generic function argument even when
1904 no method was removed.
1905 ** SHARED-INITIALIZE now initializes the values of the requested
1906 slots, including those with :ALLOCATION :CLASS.
1907 ** ALLOCATE-INSTANCE now works on structure classes defined via
1908 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1910 ** SLOT-EXISTS-P now works on conditions, as well as structures
1912 ** MAKE-LOAD-FORM now has the required methods on
1913 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1914 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1915 keyword, and now implements the SLOT-NAMES argument.
1916 ** methods with &OPTIONAL arguments no longer allow too many
1917 arguments to be passed in the call without error.
1918 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1919 option is consistent with the required arguments of the generic
1920 function lambda list.
1921 * bug fix: REQUIRE accepts a string designator. (Thanks to
1923 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1924 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1925 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1926 * bug fix: The compiler now checks for duplicated variables in macro
1928 * bug fix: SETQ on globals returns the correct value.
1929 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1930 not a COMPILER-ERROR (followed by some other strange error on
1931 choosing the CONTINUE restart).
1932 * bug fix: make.sh and friends are now more consistent in the way that
1933 they look for GNU "make".
1935 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1936 * experimental native threads support (on x86 Linux >=2.4 only).
1937 This is not compiled in by default: you need to add :SB-THREAD to
1938 the target features. See the "Beyond ANSI" chapter of the manual
1940 * fix for longstanding nonANSIism: The old distinction between
1941 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1942 The return value from CL:FIND-CLASS is now a CLOS class, and
1943 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1944 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1945 * An interface to the MetaObject Protocol, as described in Kiczales,
1946 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1947 MIT Press, 1991, is available from the SB-MOP package.
1948 * incompatible change: the SB-PCL package should now be considered
1949 a private implementation detail, and no longer a semi-private MOP
1951 * minor incompatible change: due to rearrangement for threads, the
1952 control stack and binding stack are now allocated at arbitrary
1953 addresses instead of being hardcoded per-port. Users affected by
1954 this probably have to be doing advanced things with shared
1955 libraries, and will know who they are.
1956 * minor incompatible change: Previously, all --eval forms used were
1957 processed with READ before any of them were processed with EVAL.
1958 Now each --eval form is processed with both READ and EVAL before
1959 the next --eval form is processed. (Thus package operations like
1960 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1961 work as the user might reasonably expect.)
1962 * minor incompatible change: *STANDARD-INPUT* is now only an
1963 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1965 * minor incompatible change: Y-OR-N-P is now character-oriented,
1966 not line oriented. Also, YES-OR-NO-P now works without errors.
1967 (thanks to Antonio Martinez)
1968 * sb-aclrepl module improvements: an integrated inspector, added
1969 repl features, and a bug fix to :trace command.
1970 * Known functions, which cannot be open coded by the backend, are
1971 considered to be able to check types of their arguments. (fixing
1972 a bug report by Nathan J. Froyd)
1973 * fixed a bug in computing method discriminating functions: It is
1974 now possible to define methods specialized on classes which have
1975 forward-referenced superclasses. (thanks to Gerd Moellmann)
1976 * fixed evaluation order in optional entries (reported by Gilbert
1978 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1979 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1980 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1981 required-by-AMOP NAME argument, as well as CLASS and
1982 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1983 * fixed bug 20: DEFMETHOD can define methods using names that are
1984 not the proper names of classes to designate class specializers.
1985 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1986 Unix file descriptors, instead of blowing up. (thanks to Antonio
1988 * Garbage collection refactoring: user-visible change is that a
1989 call to the GC function during WITHOUT-GCING will not do garbage
1990 collection until the end of the WITHOUT-GCING. If you were doing
1991 this you were probably losing anyway.
1992 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1993 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1994 TYPEP the latter but not the former.
1995 * The compiler issues a full WARNING for calls to undefined functions
1996 with names from the CL package.
1997 * MAP-INTO for a vector destination is open coded. (reported by
1998 Brian Downing on c.l.l)
1999 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2000 documentation string.
2001 * fixed some bugs revealed by Paul Dietz' test suite:
2002 ** COPY-ALIST now signals an error if its argument is a dotted
2004 ** Condition slots are now accessed more correctly in the presence
2005 of multiple initargs for a given slot.
2006 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2007 exclude restarts of the same name associated with a different
2009 ** DEFCLASS of forward-referenced classes with another
2010 forward-referenced class in the superclasses list no longer
2012 ** Condition slots are now initialized once each, not multiple
2013 times. (thanks to Gerd Moellmann)
2014 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2016 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2017 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2018 arguments contain duplicated elements.
2019 ** RESTART-CASE understands local macros.
2020 ** RESTART-CASE associates exactly its own restarts with a condition.
2021 ** ENDP in safe mode checks its argument to be of type LIST.
2022 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2023 in question is unbound.
2024 ** Optimized MAKE-INSTANCE functions no longer cause internal
2025 assertion failures in the presence of duplicate initargs.
2026 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2027 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2028 propagated even in the ctor optimized implementation of
2030 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2032 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2033 * a better implementation of SXHASH on (simple) bit vectors,
2034 measured both in execution speed and in distribution of results
2035 over the positive fixnums, has been installed. Likewise, a better
2036 implementation of EQUAL for simple bit vectors is now available.
2037 * fixed CEILING optimization for a divisor of form 2^k.
2038 * fixed bug 240 (emitting extra style warnings "using the lexical
2039 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2040 by Antonio Martinez)
2041 * fixed SXHASH, giving different results for NIL depending on type
2042 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2043 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2044 variable. (found by Rolf Wester)
2045 * SBCL does not ignore type declarations for special
2046 variables. (reported by rif on c.l.l 2003-03-05)
2047 * some bug fixes in contrib/sb-aclrepl/
2048 * fixed some bugs revealed by Paul Dietz' test suite:
2049 ** a bug in the CONS type specifier, whereby the CAR and CDR
2050 types got intertwined, has been fixed;
2051 ** the type system is now able to reason about the interaction
2052 between INTEGER and RATIO types more completely;
2053 ** APPEND, [N]REVERSE and NRECONC check that those their
2054 arguments, which must be proper lists, are really so;
2055 ** An array specialized to be unable to hold elements has been
2056 implemented, as required -- yes, really -- by ANSI;
2057 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2058 on malformed property lists;
2060 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2061 * incompatible packaging change: in line with Unix convention,
2062 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2063 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2064 * REQUIRE and PROVIDE are now optionally capable of doing something
2065 useful. See the documentation string for REQUIRE.
2066 * infrastructure for a managed SBCL contrib system: contributed
2067 modules in this release include:
2068 ** the ASDF system definition facility;
2069 ** an interface to the BSD Sockets API;
2070 ** an ACL-like convenience interface to the repl;
2071 (thanks to Kevin Rosenberg)
2072 ** an implementation of ROTATE-BYTE, with efficient implementation
2074 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2075 gives a closer approximation to the right answer than previously.
2076 (thanks to Raymond Toy)
2077 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2078 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2079 optional environment arguments, as required by ANSI.
2080 * fixed bugs in other functions taking environment objects, allowing
2081 calls with an explicit NIL environment argument to be compiled
2083 * fixed bug 228: primary return values from
2084 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2085 COMPILE or FUNCTION.
2086 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2087 :TYPE will no longer signal errors on innocuous objects.
2088 * fixed bug 231b: SETQ is better at respecting type declarations in
2089 the lexical environment.
2090 * fixed a bug in DEFCLASS: classes named by symbols with no or
2091 unprintable packages can now be defined.
2092 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2093 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2094 * fixed compiler failure related to checking types of functions.
2095 (reported by Robert E. Brown)
2096 * the compiler is now much more consistent in its error-checking
2097 treatment of bounding index arguments to sequence functions: in
2098 (SAFETY 3) code, errors will be signalled in almost all cases if
2099 invalid sequence bounding indices are passed to functions defined
2100 by ANSI to operate on sequences.
2101 * fixed a bug in the build procedure: documentation of SBCL-specific
2102 packages is now preserved and available in the final Lisp image.
2103 * lifted FDEFINITION lookup out of loops in the implementation of
2104 many list operations. (thanks to Robert E. Brown)
2105 * fixed a bug in the reader: the #n# reader macro now works for
2106 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2107 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2108 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2109 E. Brown and Tony Martinez respectively)
2110 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2111 SLOT-BOUNDP: in particular, it is now able to optimize them much
2112 better, and is now not vulnerable to having packages renamed.
2113 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2114 always called when a slot is not present in an instance. (thanks
2116 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2117 longer signal an error on unreading a character following EOF on
2118 the previous constituent stream. (thanks to Tony Martinez)
2119 * fixed some bugs revealed by Paul Dietz' test suite:
2120 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2121 not just nonnegative fixnums;
2122 ** the logical bit-array operators such as BIT-AND now accept an
2123 explicit NIL for their "opt-arg" argument (to indicate a
2124 freshly-consed result bit-array);
2125 ** ELT now signals an error on an invalid sequence index in safe
2127 ** the type system is now cleverer about negations of numeric
2128 types, and consequently understands the BIGNUM and RATIO types
2130 ** the type system is now cleverer about the interaction between
2131 INTEGER and RATIO types: while bugs still remain, many more
2132 cases are accurately computed;
2133 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2134 if it is in the last clause;
2135 ** CONSTANTLY now correctly returns a side-effect-free function in
2137 ** DECLARE is no longer treated as a special-operator; in
2138 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2139 * incremented fasl file version number due to the change in the
2140 DEFSTRUCT-SLOT-DESCRIPTION structure.
2142 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2143 * minor incompatible change: code processed by the "interpreter" or
2144 EVAL now has a compilation optimization policy of (DEBUG 2)
2145 (changed from (DEBUG 1)) to improve debuggability of interactive
2146 development, and to allow the use of the debug RETURN command in
2148 * an experimental implementation of the RETURN command for the
2149 debugger has been included. (thanks to Frederik Kuivinen)
2150 * fixed bug 62: constraints were not propagated into a loop.
2151 * fixed bug in embedded calls of SORT (reported and investigated by
2153 * fixed some bugs revealed by Paul Dietz' test suite:
2154 ** printing and reading of arrays with some dimensions having
2155 length 0 (thanks to Gerd Moellmann);
2156 ** BOA constructor with &AUX argument without a default value does
2157 not cause a type error;
2158 ** CONSTANTP now returns true for all self-evaluating objects.
2160 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2161 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2162 accessors that are related by inheritance, as specified in the
2163 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2164 Valtteri Vuorikoski)
2165 * The compiler is now able to inline functions that were defined in
2166 a complex lexical environment (e.g. inside a MACROLET).
2167 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2169 * Support for the upcoming FreeBSD-5.0 release has been included.
2170 (thanks to Dag-Erling Smorgrav)
2171 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2172 effect when it is not in a toplevel context.
2173 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2174 stand a better chance of being correct. (thanks to Gerd
2176 * fixed bug in COERCE, which now signals an error on coercing a
2177 rational to a bounded real type which excludes the expected
2179 * The compiler is now able to derive types more accurately from the
2180 COERCE and COMPILE functions.
2181 * fixed bug 223: functional binding is considered to be constant
2182 only for symbols in the CL package.
2183 * fixed bug 231: SETQ did not check the type of a variable being set
2184 (reported by Robert E. Brown)
2185 * A new optimization for MAKE-INSTANCE has been included, fixing
2186 various bugs (including relating to :ALLOCATION :CLASS slots and
2187 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2189 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2190 ** As required by ANSI, LOOP now disallows anonymous collection
2191 clauses such as COLLECT I in conjunction with aggregate boolean
2192 clauses such as THEREIS (= I 1);
2193 ** LOOP now signals an error when any variable is reused in the
2194 same loop (including the potentially useful construct analogous
2195 to WITH A = 1 WITH A = (1+ A);
2196 ** IT is only a special loop symbol within the first clause of a
2197 conditional loop clause;
2198 ** LOOP with a typed iteration variable over a hashtable now
2199 signals a type error iff it should.
2200 * fixed some other bugs revealed by Paul Dietz' test suite:
2201 ** FILE-STREAM now names the class previously known as FD-STREAM;
2202 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2203 argument) no longer signals an error;
2204 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2205 of the slot symbol, rather than using the current package
2206 ((:CONC-NAME "") continues to intern the slot's name in the
2208 * incremented fasl file version number, because of the incompatible
2209 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2210 of the new implementation of DEFINE-COMPILER-MACRO.
2212 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2213 * Support for building SBCL for MIPS platforms running in
2214 little-endian mode has now been checked in, and basic
2215 functionality on said platforms verified.
2216 * minor incompatible change: PCL now records the pathname of a file
2217 in which methods and the like are defined, rather than its
2219 * minor incompatible change: TRUENAME now considers the truename of
2220 a file naming a directory to be the pathname with :DIRECTORY
2221 component indicating that directory.
2222 * minor incompatible change: a NAMED clause in the extended form of
2223 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2224 reason for the previous behaviour is unclear.
2225 * more systematization and improvement of CLOS and MOP conformance
2226 in PCL (thanks to Gerd Moellman and Pierre Mai):
2227 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2229 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2230 primary methods with no specializers;
2231 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2233 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2234 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2235 FORWARD-REFERENCED-CLASSes; error reporting on
2236 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2238 ** SXHASH on CLOS instances now uses a slot internal to the
2239 instance to return different numbers on distinct instances,
2240 while preserving the same return value through invocations of
2242 ** DEFMETHOD signals errors when methods with longer incongruent
2243 lambda lists are added to generic functions;
2244 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2245 CLASS, as specified in AMOP;
2246 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2247 on the order returned by the primary method for classes of
2248 class STANDARD-CLASS;
2249 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2250 * fixed some bugs shown by Paul Dietz' test suite:
2251 ** DOLIST puts its body in TAGBODY;
2252 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2254 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2255 value producing form;
2256 ** if more variables are given to PROGV than values, extra
2257 variables are bound and made to have no value;
2258 ** NSUBSTITUTE on list arguments gets the right answer with
2260 ** ELT signals an error of type TYPE-ERROR when the index argument
2261 is not a valid sequence index;
2262 ** LOOP signals (at macroexpansion time) an error of type
2263 PROGRAM-ERROR when duplicate variable names are found;
2264 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2265 ** FUNCALL of special-operators now cause an error of type
2267 ** PSETQ now works as required in the presence of side-effecting
2268 symbol-macro places;
2269 ** NCONC accepts any object as its last argument;
2270 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2272 ** loop-for-as-package does not require a package to be explicitely
2274 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2276 * fixed bug 166: compiler preserves "there is a way to go"
2277 invariant when deleting code.
2278 * fixed bug 172: macro lambda lists with required arguments after
2279 &REST arguments now cause an error to be signalled. (thanks to
2281 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2282 bug. (thanks to Matthew Danish)
2283 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2285 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2286 arguments are lexically rebound. (thanks to Gerd Moellmann and
2288 * fixed bug 194: error messages are now more informative when there
2289 is no primary method applicable in a call to a generic
2290 function. (thanks to Gerd Moellmann)
2291 * fixed bug in command line argument checking (thanks to Julian
2293 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2294 (thanks to Matthew Danish)
2295 * incremented fasl file version number, because of the
2296 SXHASH-related changes in the layout of CLOS data structures
2298 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2299 * minor incompatible change: The runtime (the Unix executable named
2300 "sbcl") is now much pickier about the .core files it will load.
2301 Essentially it now requires .core files to descend from the same
2302 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2303 as the runtime does. (The intent is to prevent the crashes which
2304 can occur, and which can even be reported as mysterious failures,
2305 when people patch the sources or change the build parameters
2306 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2307 sbcl and .core files.)
2308 * fixed bug: VALUES-LIST is no longer optimized away.
2309 * fixed bug 142: The FFI conversion of C string values to Lisp
2310 string values no longer conses excessively. (thanks to Nathan
2311 Froyd porting Raymond Toy's fix to CMU CL)
2312 * began to systematize and improve MOP conformance in PCL (thanks to
2313 Nathan Froyd, Gerd Moellman and Pierre Mai):
2314 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2316 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2317 ** FINALIZE-INHERITANCE is now called on class finalization;
2318 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2319 argument precedence order.
2320 * fixed bug 202: The compiler no longer fails on functions whose
2321 derived types contradict their declared type.
2322 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2323 so it can be non-toplevel.
2324 * The fasl file version number has changed (because of the new
2325 implementation of DEFMACRO).
2326 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2327 safe code, that any length requirement by their type-specifier
2328 argument is valid. The exceptions to this are described in bug
2330 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2331 functions now check the types of their inputs as required by ANSI.
2332 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2333 introduced symbol is DECLAREd to be SPECIAL.
2334 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2335 * fixed bug: :COUNT argument to sequence functions may be negative
2336 * fixed bug: body of DO-SYMBOLS may contain declarations
2337 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2338 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2339 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2340 symbol macro only once
2341 * fixed printing of call frame when argument list is unavailable
2342 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2343 * compiler no longer signals WARNING on unknown keyword
2346 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2347 * A beta-quality port to the mips architecture running Linux,
2348 based on the old CMUCL backend, has been made. It has been tested
2349 on a big-endian kernel, and works sufficiently well to be able to
2350 rebuild itself; it has not been tested in little-endian mode.
2351 * fixed an inconsistency between gencgc.c and purify.c which made
2352 dumping/loading .core files unreliable
2353 * fixed bug 120a: The compiler now deals correctly with IFs where
2354 the consequent is the same as the alternative, instead of
2355 misderiving the return type. (thanks to Alexey Dejneka)
2356 * fixed bug 113: Logical pathnames are now dumpable (the logical
2357 host is resolved at load-time, throwing an error if it is not
2359 * fixed bug 174: FORMAT's error message is slightly clearer when a
2360 non-printing character is used in a format directive.
2361 * fixed several bugs in compiler checking of type declarations, i.e.
2362 violations of the Python "declarations are assertions" principle
2363 (thanks to Alexey Dejneka)
2364 * fixed several bugs in PCL's error checking (thanks to Gerd
2366 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2368 * fixed bug in compilation of functions as first class values
2369 (thanks to Antonio Martinez-Shotton)
2370 * The compiler's handling TYPE-ERRORs which it can prove will
2371 inevitably happen at runtime has been cleaned up and corrected
2372 in several ways. (thanks to Alexey Dejneka)
2373 * improved argument type checking for various basic arithmetic
2374 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2375 lavished on them in the past that they can be compiled in many
2376 ways in different special cases
2377 * fixed bug 181: compiler checks validity of user supplied type
2379 * cleaned up code flushing in optimization: Function calls which
2380 should signal errors for safety purposes (e.g. which ANSI says
2381 should signal errors when their arguments are of incorrect type)
2382 are no longer optimized away.
2383 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2384 * incremented fasl file version number, because changes in the
2385 implementation of sequence functions like COERCE caused
2386 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2387 in old inline expansions) to become undefined. (Actually these
2388 changes were later undone, so we might very well be binary
2389 compatible with 0.7.7 after all, but leaving the version number
2390 incremented seemed like the simplest and most conservative
2393 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2394 * An alpha-quality port to the parisc architecture running Linux,
2395 based on the old CMUCL backend, has been made. This, even more so
2396 than the other backends, should be considered still a work in
2397 progress; known problems include that the Linux kernel in 64-bit
2398 mode does not propagate the correct sigcontext structure to
2399 userspace, and consequently SBCL on a parisc64 kernel will not
2401 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2402 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2403 suppressed.) Also now that the compiler is looking at declarations
2404 in the environment, it checks optimization declarations as well,
2405 and suppresses inlining when (> DEBUG SPEED).
2406 * More fixes have been made to treatment of floating point exception
2407 treatment and other Unix signals. In particular, floating point
2408 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2409 * The detection and handling of control stack exhaustion (infinite
2410 or very deeply nested recursion) has changed. Stack exhaustion
2411 detection is now done by write-protecting pages at the OS level
2412 and applies at all optimization settings; when found, a
2413 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2414 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2415 be caught using IGNORE-ERRORS.
2416 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2417 correctly when transforming recursive LABELS functions to LETs.
2418 (thanks to Alexey Dejneka)
2419 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2420 that are names of constants or global variables.
2421 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2422 alien routines with docstrings.
2423 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2424 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2426 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2427 (thanks to Eric Marsden)
2428 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2429 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2430 * Bug fix: The SPARC backend can now compile functions involving
2431 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2432 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2433 to a functions expecting a PATHNAME-DESIGNATOR.
2434 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2435 lambda lists. (thanks to Alexey Dejneka)
2436 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2437 functions so that EXPORTing the name of the class doesn't cause
2438 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2439 to Antonio Martinez for reporting this)
2440 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2441 constant-folded without failing an assertion. (thanks to Einar
2442 Floystad Dorum for reporting this)
2443 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2444 types are now dealt with more correctly by the compiler.
2445 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2446 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2447 behaviour analogous to RENAME-FILE. This puts its behaviour more
2448 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2450 * The fasl file version number has changed again. (because of the
2451 bug fix involving the names of PCL MAKE-INSTANCE functions)
2453 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2454 * bug fix: Floating point exceptions are treated much more
2455 consistently on the x86/Linux and PPC/Linux platforms.
2456 * Array initialization with :INITIAL-ELEMENT is now much faster for
2457 cases when the compiler cannot open code the array creation, but
2458 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2459 array accesses have also seen a speed increase.
2460 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2461 specified. (This was at the root of some bad interactions between
2462 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2464 * bug fix: Internal error arguments for undefined functions are now
2465 computed correctly on the PPC/Linux platform.
2466 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2467 Raymond Toy's patch for CMU CL)
2468 * Support for the Solaris 9 operating environment has been included
2469 (thanks to Daniel Merritt)
2470 * A very ugly but hopefully complete draft of the missing FFI chapter
2471 of the manual has been created by reformatting the corresponding
2472 CMU CL manual chapter into (currently very ugly and incoherent)
2473 DocBook and bringing it up to date for SBCL behavior. Thus, the
2474 manual is now essentially complete, at least by my extreme
2475 once-and-only-once standards, whereby it's acceptable to refer to
2476 the doc strings of SB-EXT functions as the primary documentation.
2477 * The fasl file version number has changed again, due to cleanup of
2478 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2479 is no longer a static symbol.)
2481 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2482 * SBCL now builds with OpenMCL (version 0.12) as the
2483 cross-compilation host; also, more progress has been made toward
2484 bootstrapping under CLISP.
2485 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2487 * bug 158 fixed: The compiler can now deal with integer loop
2488 increments different from 1; fixing this turned out also to fix
2490 * bug 169 fixed: no more bogus warnings about using lexical bindings
2491 despite the presence of perfectly good SPECIAL declarations (thanks
2492 to David Lichteblau)
2493 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2494 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2495 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2497 * bug 180 fixed: Method combination specifications no longer ignore
2498 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2499 * bug fix: Structure type predicate functions now check their argument
2500 count as they should.
2501 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2502 correctly. (thanks to Pierre Mai)
2503 * minor incompatible change: The --noprogrammer option is deprecated
2504 in favor of the new --disable-debugger option, which is very similar.
2505 (The major difference is that it takes effect at a slightly different
2506 time at startup, causing handling of errors in --sysinit and
2507 --userinit files will be affected differently.) The
2508 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2509 been added to allow this functionality to be controlled from ordinary
2510 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2511 maintainers, who might want to run non-interactive scripts to
2512 build SBCL cores which will later be used interactively.)
2513 * minor incompatible change: The LOAD function no longer, when given
2514 a wild pathname to load, loads all files matching that pathname.
2515 Instead, an error of type FILE-ERROR is signalled.
2517 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2518 * bug 147 fixed: The compiler preserves its block link/count
2519 invariants more correctly now so that it doesn't crash. (thanks
2521 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2523 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2524 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2525 no-value-for-this-character as NIL (as specified by ANSI).
2526 * HOST-NAMESTRING on physical pathnames now returns a string that is
2527 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2528 (thanks to Christophe Rhodes)
2529 * The Alpha port handles icache flushing more correctly. (thanks to
2531 * More progress has been made toward bootstrapping under CLISP. (thanks
2532 to Christophe Rhodes)
2533 * The fasl file format has changed again, because dynamic loading
2534 on OpenBSD (which has non-ELF object files) motivated some cleanups
2535 in the way that foreign symbols are transformed and passed around.
2536 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2537 is no longer treated as whitespace by the reader, but instead as
2538 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2539 |A
\7fB|, instead of A as it used to.
2541 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2542 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2543 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2544 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2545 this as of 0.7.1.45, but was left out of the previous news section
2546 (thanks to Dan Barlow)
2547 * SBCL now runs on the Solaris operating system on SPARC architectures
2548 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2549 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2550 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2551 * SPARC backend cleanups, allowing builds of cores optimized for V8
2552 and V9 SPARCS, and also emission of code targeted to a particular
2553 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2555 * SBCL is closer to bootstrapping under CLISP, thanks to various
2556 fixes by Christophe Rhodes.
2557 * The fasl file format has changed again, to allow the compiler's
2558 INFO database to support symbol macros.
2559 * The user manual (in doc/) is formatted into HTML more nicely.
2560 (thanks to coreythomas)
2561 * The system is smarter about SUBTYPEP relationships, especially
2562 those involving NOT types (including types such as ATOM which are
2563 represented internally using NOT types). Thus SUBTYPEP is less
2564 likely to return (VALUES NIL NIL) in general, and in particular
2565 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2567 * The fasl file format has changed again, because the internal
2568 representation of types now includes a new slot to support the new
2569 SUBTYPEP-of-NOT-types logic.
2570 * (not a change in the main branch of SBCL, but a related prototype
2571 which can hopefully be merged into the main branch of SBCL in the
2572 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2573 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2574 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2575 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2576 dispatch macro character combinations. (thanks to Alexey Dejneka)
2577 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2578 that superficially look like logical namestrings correctly.
2579 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2581 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2582 default supplied-p) for &optional and &key arguments. (thanks to
2585 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2586 * incompatible change: The compiler is now less aggressive about
2587 tail call optimization, doing it only when (> SPACE DEBUG) or
2588 (> SPEED DEBUG). (This is an incompatible change because there are
2589 programs which relied on the old CMU-CL-style behavior to optimize
2590 away their unbounded recursion which will now die of stack overflow.)
2591 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2592 for non-GENCGC systems has been increased to 20M (since that
2593 seems much closer to the likely performance optimum for modern
2594 systems than the old 4M value was)
2595 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2596 and *DEBUG-PRINT-LEVEL*
2597 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2598 of CMU CL's support for SPARC, and various endianness and other
2599 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2600 * new syntactic sugar for the Unix command line: --load foo.bar is now
2601 an alternate notation for --eval '(load "foo.bar")'.
2603 ** The system now detects stack overflow and handles it gracefully,
2604 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2605 optimization settings. (This is a good thing in general, and
2606 its introduction in this version should be particularly timely
2607 for anyone whose code fails because of suppression of tail
2609 ** The system now hunts for the C variable "environ" in a more
2610 devious way, to avoid segfaults when the C library version differs
2611 between compile time and run time. (thanks to Christophe Rhodes)
2612 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2613 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2614 ** The compiler no longer issues bogus style warnings for undefined
2615 classes in the same source file as the DEFCLASSes which defined
2616 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2618 ** fixes in CONDITION class precedence list for undefined function
2619 errors (thanks to Alexei Dejneka)
2620 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2621 correctly. (thanks to Dan Barlow)
2622 ** portability fixes aiming at bootstrapping under CLISP (thanks
2623 to Dave McDonald and Christophe Rhodes)
2624 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2625 ** fixes in type translation and and type inference (thanks to
2627 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2628 ** various fixes in the new ports (thanks to Dan Barlow)
2629 * several changes related to debugging:
2630 ** suppression of tail recursion, as noted above
2631 ** stack overflow detection, as noted above
2632 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2633 is now the default. (For some time encapsulation has been more
2634 reliable than the breakpoint-based :ENCAPSULATE NIL
2635 implementation, at least on X86 systems; and I just noticed that
2636 encapsulation also seems closer to the spirit of the ANSI
2639 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2641 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2642 up properly again. (There was a packaging bug in 0.7.0 which
2643 left their definitions in SB-SYS::LOAD-FOREIGN and
2644 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2645 vital for most things which interface to C-level interfaces,
2646 like extensions working with sockets or databases or
2647 Perl-compatible regexes or whatever, and the need to fix
2648 this bug is the main reason that 0.7.1 was released so
2650 ** DEFGENERIC is now choosier about the methods it redefines, so that
2651 reLOADing a previously-LOADed file containing DEFGENERICs does
2652 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2653 cycle now works as it should. (thanks to Alexey Dejneka)
2654 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2655 fixed by Christophe Rhodes. (He actually submitted this patch
2656 months ago, and I delayed until after 0.7.0.)
2657 ** Bug 111 (internal compiler confusion about runtime checks on
2658 FUNCTION types) was fixed by Alexey Dejneka.
2659 * Some internal cleanups (getting rid of variables which aren't
2660 needed now that the byte interpreter is gone) caused the fasl
2661 file format number to change again.
2663 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2664 * major incompatible change: The default fasl file extension, i.e. the
2665 default extension for files produced by COMPILE-FILE, has changed
2666 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2668 ** There are many changes in the implementation of the compiler.
2669 SBCL is now essentially a compiler-only implementation of ANSI
2670 Common Lisp. EVAL still "interprets" a few special cases, but
2671 almost all the interesting cases are handled by creating
2672 a LAMBDA expression, calling COMPILE on it, then calling
2673 FUNCALL on the result.
2674 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2675 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2676 Since the code is newer, there might still be some new bugs
2677 (though not as many as before Martin Atzmueller's fixes:-). But
2678 the new code is substantially simpler and clearer, and hopefully
2679 any remaining bugs will be simpler, less fundamental, and more
2680 fixable then the bugs in the old code.
2681 ** The revised compiler is still a little unsteady on its feet.
2683 *** The debugging information it produces (particularly the names
2684 of FUNCTION objects) is sometimes much less useful than what
2685 the old compiler produced.
2686 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2687 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2688 within a MACROLET) has been temporarily weakened.
2689 ** There are new compiler optimizations for various functions:
2690 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2691 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2692 *** the math functions TRUNCATE, FLOOR, and CEILING
2693 *** the function-of-all-trades COERCE
2694 Mostly these should be transparent, but there's one
2695 potentially-annoying problem (bug 117): when the compiler
2696 inline-expands a function and does type analysis on the result,
2697 it can create control paths which have type mismatches, and
2698 when it can't prove that those control paths aren't taken,
2699 it will issue WARNINGs about the type mismatches. This is
2700 a particular problem in practice for the new sequence functions.
2701 It's not clear how this should be fixed, and for now, a
2702 workaround is given in the entry for 117 in the BUGS file.
2703 ** (Because of the interaction between the two previous items --
2704 occasional inlining problems and new inline expansions -- some
2705 of the new sequence function optimizations won't really kick in
2706 completely until debugging information, and then inlining, are
2707 straightened out in some future version.)
2708 * minor incompatible changes:
2709 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2710 DIRECTORY no longer implicitly promotes NIL slots of its
2711 pathname argument to :WILD. In particular, when you ask for the
2712 contents of a directory (which you used to be able to do without
2713 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2714 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2715 ** changes in behavior that ANSI explicitly defines to be
2716 implementation dependent:
2717 *** The new compiler-only implementation still conforms with ANSI,
2718 but acts a little different than before. Besides the obvious
2719 changes in performance tradeoffs (that the cost per form passed
2720 to EVAL has gone up, and the cost per form executed by EVAL
2721 has gone down), the behavior of the system changes a little
2722 because there are no longer any interpreted function objects.
2723 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2724 e.g. doing COMPILE on the output of interactive DEFUN is
2726 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2728 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2729 has changed from (:CL) to NIL.
2730 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2731 e.g. #\Newline and #\Tab, don't have names specified in the
2732 ANSI Common Lisp standard, is now based on their ASCII symbolic
2733 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2734 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2735 are no longer used for output.
2736 ** changes in internal implementation constants:
2737 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2738 4 million. (If your application spends a lot of time GCing and
2739 you have a lot of RAM, you might want to experiment with
2740 increasing it even more.)
2741 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2742 However, almost all old code should still continue to work without
2743 immediate update, as SB-C-CALL is now a (deprecated) nickname
2745 ** Old operator names in the style DEF-FOO are now deprecated in
2746 favor of new corresponding names DEFINE-FOO, for consistency with
2747 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2748 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2749 internal symbols, but a few supported extensions like
2750 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2751 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2752 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2753 etc. as you get deeper into recursive calls to the debugger
2754 command loop, instead of the old "5]", "5]]", "5]]]"
2755 sequence. (I was motivated to do this when squabbles between
2756 ILISP and SBCL left me very deeply nested in the debugger. In the
2757 short term, this change will probably provoke more ILISP/SBCL
2758 squabbles, but hopefully it will be an improvement in the long run.)
2759 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2760 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2761 function, since declaiming return types involving aliens is
2762 (1) annoyingly messy to do by hand and (2) vital to efficient
2763 compilation of code which calls such functions.
2764 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2765 longer reexported by the SB-EXT package. They're solely useful
2766 for alien code, so it seems more logical that you should get
2767 them from the SB-ALIEN package, not in SB-EXT.
2768 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2769 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2770 features. Instead, the code that they used to control is always
2771 built into the system.
2772 * many other bug fixes
2773 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2774 advantage of the new EVAL-WHEN stuff and to clean them up in
2775 general, and they are now more ANSI-compliant in a number of
2776 ways. Martin Atzmueller is responsible for a lot of this.
2777 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2779 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2780 *** correct ERROR type for various file operations
2781 *** some fixes for Lisp streams
2782 *** DEFMETHOD syntax checking
2783 *** changing old weird representation of debug information as
2784 strings (which, among their other deficiencies, don't transform
2785 correctly when you rename packages, and don't change their
2786 print representation when you change things like *PACKAGE*
2787 and *PRINT-LENGTH*) to symbols and lists of symbols
2788 He also made several improvements and fixed several bugs in DESCRIBE.
2789 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2791 *** misbehavior of WRITE-STRING/WRITE-LINE
2792 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2793 and several other LOOP problems as well
2794 *** DIRECTORY when similar filenames are present
2795 *** DEFGENERIC with :METHOD options
2796 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2797 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2798 *** argument ordering in FIND with :TEST option
2799 *** mishandled package designator argument in APROPOS-LIST
2800 *** various problems in the backquote readmacro
2801 *** a bug in APROPOS
2802 *** probably some others that I'm not describing very well here,
2803 since the CVS log documents them by reference to sbcl-devel
2804 messages, and the SourceForge archives aren't working well.:-(
2805 ** Dan Barlow improved the Alpha port (and is making progress on the
2806 PPC port, for those of you who think different).
2807 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2808 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2809 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2810 continues to work on the SPARC port (for those of you in a position
2811 to look down upon our little PC-compatible boxes from a great height).
2812 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2813 and uses that copy, rather than the current dynamic value, when
2814 it's trying to decide whether to truncate output. Thus e.g.
2815 (let ((*print-lines* 50))
2816 (pprint-logical-block (stream nil)
2818 (let ((*print-lines* 8))
2819 (print (aref possiblybigthings i) stream)))))
2820 should now truncate the logical block only at 50 lines, instead of
2821 often truncating it at 8 lines, as it did before.
2822 * The doc/cmucl/ directory, containing old CMU CL documentation
2823 from the time of the fork, is no longer part of the base system.
2824 SourceForge has shut down its anonymous FTP service, and with it
2825 my original plan for distributing the old CMU CL documentation
2826 there. For now, if you need these files you can download an old
2827 SBCL source release and extract them from it.
2828 * The fasl file version number changed again, for dozens of reasons,
2829 some of which are apparent above.
2831 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2832 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2833 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2834 patch, so that DISASSEMBLE output is much nicer.
2835 * The code in the SB-PROFILE package now seems reasonably stable.
2836 I still haven't decided what the final interface should look like
2837 (I'd like PROFILE to interact cleanly with TRACE, since both
2838 facilities use function encapsulation) but if you have a need
2839 for profiling now, you can probably use it successfully with
2840 the current CMU-CL-style interface.
2841 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2842 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2843 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2844 link now returns the dangling link itself, and for similar
2845 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2846 link itself. (In these cases the old code signalled an error and
2847 looped endlessly, respectively.) Thus, DIRECTORY now works even
2848 in the presence of dangling and cyclic symbolic links.
2849 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2850 is now a supported extension again, since the consensus on
2851 sbcl-devel was that it can be useful for ordinary development
2852 work, not just for debugging SBCL itself.
2853 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2854 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2855 that currently-defined functions might be redefined later with
2856 different return types.
2857 * Hash tables can be printed readably, as inspired by CMU CL code
2858 of Eric Marsden and SBCL code of Martin Atzmueller.
2859 * better error handling in CLOS method combination, thanks to
2860 Martin Atzmueller porting Pierre Mai's CMU CL patches
2861 * more overflow fixes for >16Mbyte I/O buffers
2862 * A bug in READ has been fixed, so that now a single Ctrl-D
2863 character suffices to cause end-of-file on character streams.
2864 In particular, now you only need one Ctrl-D at the command
2865 line (not two) to exit SBCL.
2866 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2868 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2869 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2870 does the right thing.
2871 * The implementation of some type tests, especially for CONDITION
2872 types, is now tidier and maybe faster, due to CMU CL code
2873 originally by Douglas Crosher, ported by Martin Atzmueller.
2874 * Some math functions have been fixed, and there are new
2875 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2876 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2877 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2878 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2879 likely to be built into sbcl-0.7.0.)
2880 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2881 CL, ported to SBCL by Martin Atzmueller)
2882 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2883 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2884 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2885 * There's a new slam.sh hack to shorten the edit/compile/debug
2886 cycle for low-level changes to SBCL itself, and a new
2887 :SB-AFTER-XC-CORE target feature to control the generation of
2888 the after-xc.core file needed by slam.sh.
2889 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2890 COMPILE-FILE is no longer supported, so that now every function
2891 gets an entry point, so that block compilation looks a little
2892 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2893 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2894 returns the number of bytes consed since the system started,
2895 rather than the number consed since the first time the function
2896 was called. (The new definition parallels ANSI functions like
2897 CL:GET-INTERNAL-RUN-TIME.)
2898 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2899 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2900 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2901 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2902 * Fasl file version numbers are now independent of the target CPU,
2903 since historically most system changes which required version
2904 number changes have affected all CPUs equally. Similarly,
2905 the byte fasl file version is now equal to the ordinary
2908 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2909 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2910 is no longer recognized. I apologize for this, because it was
2911 listed in SB-EXT as a supported extension, but I found that
2912 its existing behavior was poorly specified, as well as incorrectly
2913 specified, and it looked like too much of a mess to straighten it
2914 out. I have enough on my hands trying to get ANSI stuff to work..
2915 * many patches ported from CMU CL by Martin Atzmueller, with
2916 half a dozen bug fixes in pretty-printing and the debugger, and
2917 half a dozen others elsewhere
2918 * fixed bug 13: Floating point infinities are now supported again.
2919 They might still be a little bit flaky, but thanks to bug reports
2920 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2921 as flaky as they were.
2922 * The --noprogrammer command line option is now supported. (Its
2923 behavior is slightly different in detail from what the old man
2924 page claimed it would do, but it's still appropriate under the
2925 same circumstances that the man page talks about.)
2926 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2927 are now supported, and enabled by default. Thus, the compiler can
2928 handle many floating point and complex operations much less
2929 inefficiently. (Thus e.g. you can implement a complex FFT
2931 * The compiler now detects type mismatches between DECLAIM FTYPE
2932 and DEFUN better, and implements CHECK-TYPE more correctly, and
2933 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2934 thanks to patches from Martin Atzmueller.
2935 * various fixes to make the cross-compiler more portable to
2936 ANSI-conforming-but-different cross-compilation hosts (notably
2937 Lispworks for Windows, following bug reports from Arthur Lemmens)
2938 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2939 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2940 fixed thanks to Pierre Mai's CMU CL patches.
2941 * fixes to keep the system from overflowing internal counters when
2942 it tries to use i/o buffers larger than 16M bytes
2943 * fixed bug 45a: Various internal functions required to support
2944 complex special functions have been merged from CMU CL sources.
2945 (When I was first setting up SBCL, I misunderstood a compile-time
2946 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2947 * improved support for type intersection and union, fixing bug 12
2948 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2949 more obscure bugs as well
2950 * some steps toward byte-compiling non-performance-critical
2951 parts of the system, courtesy of patches from Martin Atzmueller
2952 * Christophe Rhodes has made some debian packages of sbcl at
2953 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2954 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2955 stable, but are nonetheless usable. When he's ready, I'd be happy
2956 to add them to the SourceForge "File Releases" section. (And if
2957 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2958 * new fasl file format version number (because of changes in
2959 internal representation of (OR ..) types to accommodate the new
2960 support for (AND ..) types, among other things)
2962 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2963 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2965 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2967 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2968 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2969 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2970 * DESCRIBE now works on structure objects again.
2971 * Most function call argument type mismatches are now handled as
2972 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2973 know whether the function will be redefined before the call is
2974 executed. (The compiler could flag local calls with full WARNINGs,
2975 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2976 it doesn't keep track of enough information to know whether calls
2977 are local in this sense.)
2978 * Compiler output is now more verbose, with messages truncated
2979 later than before. (There should be some supported way for users
2980 to override the default verbosity, but I haven't decided how to
2981 provide it yet, so this behavior is still controlled by the internal
2982 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2983 src/compiler/ir1util.lisp.)
2984 * Fasl file format version numbers have increased again, because
2985 support for the Gray streams extension changes the layout of the
2986 system's STREAM objects.
2987 * The Gray subclassable streams extension now works, thanks to a
2988 patch from Martin Atzmueller.
2989 * The full LOAD-FOREIGN extension (not just the primitive
2990 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2991 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2992 but like most other programs, it defaults to copying the Unix
2993 environment from the original process instead of starting the
2994 new process in an empty environment.
2995 * Extensions which manipulate the Unix environment now support
2996 an :ENVIRONMENT keyword option which doesn't smash case or
2997 do other bad things. The CMU-CL-style :ENV option is retained
2998 for porting convenience.
2999 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3000 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3002 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3004 * A patch from Martin Atzmueller seems to have solved the SIGINT
3005 problem, and as far as we know, signal-handling now works cleanly.
3006 (If you find any new bugs, please report them!)
3007 * The system no longer defaults Lisp source file names to types
3008 ".l", ".cl", or ".lsp", but only to ".lisp".
3009 * The compiler no longer uses special default file extensions for
3010 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3011 seems to expect a single default extension for all compiled code,
3012 and there's no compelling reason to try to stretch the standard
3013 to allow two different extensions.) Instead, byte-compiled files
3014 default to the same extension as native-compiled files.
3015 * Fasl file format version numbers have increased again, because
3016 a rearrangement of internal implementation packages made some
3017 dumped symbols in old fasl files unreadable in new cores.
3018 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3019 many fewer weird special cases.
3020 * Bug #17 (differing COMPILE-FILE behavior between logical and
3021 physical pathnames) has been fixed, and some related misbehavior too,
3022 thanks to a patch from Martin Atzmueller.
3023 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3024 by Tim Moore, ported to SBCL by Martin Atzmueller.
3025 * Martin Atzmueller fixed several filesystem-related problems,
3026 including bug #36, in part by porting CMU CL patches, which were
3027 written in part by Paul Werkowski.
3028 * More compiler warnings in src/runtime/ are gone, thanks to
3029 more patches from Martin Atzmueller.
3030 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3033 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3035 * DESCRIBE now works on CONDITION objects.
3036 * The debugger now handles errors which arise when trying to print
3037 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3039 * The build system now uses an additional file, customize-target-features.lisp,
3040 to allow local modifications to the target *FEATURES* list. (The point of
3041 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3042 debugging features enabled, without having to worry about propagating it
3043 into everyone's system when I do a "cvs update".) When no
3044 customize-target-features.lisp file exists, the target *FEATURES* list
3045 should be constructed the same way as before.
3046 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3047 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3048 warn about behavior which is undefined under the ANSI spec. Note: This
3049 is specified by ANSI, but it's not very popular with programmers.
3050 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3051 macro in the SBCL sources for an example of a workaround which you
3052 might use to make portable ANSI-standard code which does what you want.
3053 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3054 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3055 when it's used as a non-toplevel form. (This is required in order
3056 to implement the DEFCONSTANT-EQX macro.)
3057 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3058 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3059 funny things, due to bugs in the implementation of EVAL-WHEN
3060 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3061 non-toplevel DEFCONSTANTs are uncommon.)
3062 * The core file version number and fasl file version number have been
3063 incremented, because the old noncompliant DEFCONSTANT behavior involved
3064 calling functions which no longer exist, and because I also took the
3065 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3066 * fixed bug 1 (error handling before read-eval-print loop starts), and
3067 redid debugger restarts and related debugger commands somewhat while
3069 ** The QUIT debugger command is gone, since it did something
3070 rather different than the SB-EXT:QUIT command, and since it never
3071 worked properly outside the main toplevel read/eval/print loop.
3072 Invoking the new TOPLEVEL restart provides the same functionality.
3073 ** The GO debugger command is also gone, since you can just invoke
3074 the CONTINUE restart directly instead.
3075 ** The TOP debugger command is also gone, since it's redundant with the
3076 FRAME 0 command, and since it interfered with abbreviations for the
3078 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3080 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3081 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3082 some porting work by Martin Atzmueller)
3083 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3084 with a boatload of patches which he ported to SBCL. Now that those
3086 ** The system tries to make sure that its low-priority messages
3087 are prefixed by semicolons, to help people who like to use
3088 syntax highlighting in their ILISP buffer. (This patch
3089 was originally due to Raymond Toy.)
3090 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3091 patches originally written by Raymond Toy.
3092 ** The compiler understands coercion between single-value and
3093 multiple-VALUES type expressions better, getting rid of some very
3094 weird behavior, thanks to patches originally by Robert MacLachlan
3095 and Douglas Crosher.
3096 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3097 lambda lists, thanks to a patch originally by Pierre Mai.
3098 ** The system no longer bogusly warns about "abbreviated type
3100 ** The compiler gets less confused by inlining and RETURN-FROM,
3101 thanks to some patches originally by Tim Moore.
3102 ** The system no longer hangs when dumping circular lists to fasl
3103 files, thanks to a patch originally from Douglas Crosher.
3104 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3105 undefined function error.
3106 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3107 in structure slot initforms) for now, documented workaround instead:-|
3108 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3109 * fixed bug 5: added stubs for various Gray stream functions called
3110 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3111 installed, at least appropriate type errors are generated
3112 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3113 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3114 consistently in DEFMETHOD forms.
3115 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3116 it doesn't seem to affect SBCL after all
3117 * The C runtime system now builds with better optimization and many
3118 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3120 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3122 * The system is now under CVS at SourceForge (instead of the
3123 CVS repository on my home machine).
3124 * The new signal handling code has been tweaked to treat register
3125 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3126 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3127 downstream, e.g. in debug-int.lisp, has implicit dependencies
3128 on the unsignedness of integer representation of machine words,
3129 and that caused the system to bomb out with infinite regress
3130 when trying to recover from type errors involving signed values,
3131 e.g. (BUTLAST '(1 2 3) -1).)
3132 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3133 (This was one of the bugs Peter Van Eynde reported back in July.)
3134 * The system now uses code inspired by Colin Walters' O(N)
3135 implementation of MAP (from the cmucl-imp@cons.org mailing
3136 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3137 inline the MAP operation, and there is more than one
3138 sequence argument to the MAP call (so that it can't just
3139 do ETYPECASE once and for all based on the type of the
3140 single sequence argument). (The old non-inline implementation
3141 of the general M-argument sequence-of-length-N case required
3142 O(M*N*N) time when any of the sequence arguments were LISTs.)
3143 * The QUIT :UNIX-CODE keyword argument has been renamed to
3144 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3145 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3147 * Raymond Wiker's patches to port dynamic loading from Linux to
3148 FreeBSD have been added.
3149 * The BUGS file is now more nearly up to date, thanks in large part
3150 to Martin Atzmueller's review of it.
3151 * The debugger now flushes standard output streams before it begins
3152 its output ("debugger invoked" and so forth).
3153 * The core version number and fasl file version number have both
3154 been incremented, because of incompatible changes in the layout
3156 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3157 used to not be called for a saved Lisp image.)
3158 * Martin Atzmueller's version of a patch to fix a compiler crash,
3159 as posted on sbcl-devel 13 September 2000, has been installed.
3160 * Instead of installing Martin Atzmueller's patch for the
3161 compiler transform for SUBSEQ, I deleted the compiler transform,
3162 and transforms for some similar consing operations.
3163 * A bug in signal handling which kept TRACE from working on OpenBSD
3165 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3166 away by constant folding
3167 * The system now defines its address space constants in one place
3168 (in the Lisp sources), and propagates them automatically elsewhere
3169 (through GENESIS and the sbcl.h file). Therefore, patching the
3170 address map is less unnecessarily tedious and error-prone. The
3171 Lisp names of address space constants have also been systematized.
3172 * CVS tags like dollar-Header-dollar have been removed from
3173 the sources, because they have never saved me trouble and
3174 they've been source of trouble working with patches and other
3175 diff-related operations.
3176 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3177 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3179 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3181 * The system has been ported to OpenBSD.
3182 * The system now compiles with a simple "sh make.sh" on the systems
3183 that it's supported on. I.e., now you no longer need to tweak
3184 text in the target-features.lisp-expr and symlinks in src/runtime/
3185 by hand, the make.sh takes care of it for you.
3186 * The system is no longer so grossly inefficient when compiling code
3187 involving vectors implemented as general (not simple) vectors (VECTOR T),
3188 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3189 which dares to use the various sequence functions on non-simple
3190 vectors, takes less of a performance hit.
3191 * There is now a primitive type predicate VECTOR-T-P
3192 to test for the (VECTOR T) type, so that e.g.
3193 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3194 can now be compiled with some semblance of efficiency. (The old code
3195 turned the type declaration into a full call to %TYPEP at runtime!)
3196 * AREF on (VECTOR T) is still not fast, since it's still compiled
3197 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3198 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3199 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3200 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3201 without making full calls to SUBTYPEP at runtime.
3202 (Some analogous efficiency issues for non-simple vectors specialized to
3203 element types other than T, or for non-simple multidimensional arrays,
3204 have not been addressed. They could almost certainly be handled the
3205 same way if anyone is motivated to do so.)
3206 * The changes in array handling break binary compatibility, so
3207 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3208 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3209 instead of (VALUES T T).
3210 * By following the instructions that Dan Barlow posted to sbcl-devel
3211 on 2 July 2000, I was able to enable primitive dynamic object
3212 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3213 functionality is not implemented (since it calls ld to resolve
3214 library references automatically, requiring RUN-PROGRAM for its
3215 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3216 try to resolve library references) is now supported.
3217 * The system now flushes the standard output streams when it terminates,
3218 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3219 them at several other probably-convenient times, e.g. in each pass of
3220 the toplevel read-eval-print loop, and after evaluating a form given
3221 as an "--eval" command-line option. (These changes were motivated by a
3222 discussion of stream flushing issues on cmucl-imp in August 2000.)
3223 * The source transform for TYPEP of array types no longer assumes
3224 that an array whose element type is a not-yet-defined type
3225 is implemented as an array of T, but instead punts, so that the
3226 type will be interpreted at runtime.
3227 * There is now some support for cross-compiling in make.sh: each of
3228 the phases of make.sh has its own script. (This should be transparent
3229 to people doing ordinary, non-cross-compile builds.)
3230 * Since my laptop doesn't have hundreds of megabytes of memory like
3231 my desktop machine, I became more motivated to do some items on
3232 my to-do list in order to reduce the size of the system a little:
3233 ** Arrange for various needed-only-at-cold-init things to be
3234 uninterned after cold init. To support this, those things have
3235 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3236 symbols with such names are now uninterned after cold init).
3237 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3238 fasl files for cold load.
3239 ** Remove the old compiler structure pooling code (which used to
3240 be conditional on the target feature :SB-ALLOC) completely.
3241 ** Redo the representation of some data in cold init to be more compact.
3242 (I also looked into supporting byte compiled code at bootstrap time,
3243 which would probably reduce the size of the system a lot, but that
3244 looked too complicated, so I punted for now.)
3245 * The maximum signal nesting depth in the src/runtime/ support code has
3246 been reduced from 4096 to 256. (I don't know any reason for the very
3247 large old value. If the new smaller value turns out to break something,
3248 I'll probably just bump it back up.)
3249 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3251 * Many, many bugs reported by Peter Van Eynde have been added to
3252 the BUGS list; some have even been fixed.
3253 * While enabling dynamic object file loading, I tried to make the
3254 code easier to understand, renaming various functions and variables
3255 with less ambiguous names, and changing some function calling
3256 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3257 * While trying to figure out how to do the OpenBSD port, I tried to
3258 clean up some of the code in src/runtime/. In particular, I dropped
3259 support for non-POSIX signal handling, added various comments,
3260 tweaked the code to reduce the number of compilation warnings, and
3261 renamed some files to increase consistency.
3262 * To support the new automatic configuration functionality in make.sh,
3263 the source file target-features.lisp-expr has been replaced with the
3264 source file base-target-features.lisp-expr and the machine-generated
3265 file local-target-features.lisp-expr.
3266 * fixed a stupid quoting error in make.sh so that using CMU CL
3267 "lisp -batch" as cross-compilation host works again
3269 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3271 * DESCRIBE no longer tries to call itself recursively to describe
3272 bound/fbound values, so that it no longer fails on symbols which are
3273 bound to themselves (like keywords, T, and NIL).
3274 * DESCRIBE now works on generic functions.
3275 * The printer now prints less-screwed-up representations of closures
3276 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3277 * A private symbol is used instead of the :EMPTY keyword previously
3278 used to mark empty slots in hash tables. Thus
3279 (DEFVAR *HT* (MAKE-HASH-TABLE))
3280 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3281 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3282 now does what ANSI says that it should. (You can still get
3283 similar noncompliant behavior if bang on the hash table
3284 implementation with all the symbols you get back from
3285 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3286 This breaks binary compatibility, since tests for equality to
3287 :EMPTY are wired into things like the macroexpansion of
3288 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3290 * There's now a minimal placeholder implementation for CL:STEP,
3291 as required by ANSI.
3292 * An obscure bug in the interaction of the normal compiler, the byte
3293 compiler, inlining, and structure predicates has been patched
3294 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3295 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3297 * Missing ordinary arguments in a macro call are now detected even
3298 when the macro lambda list contains &KEY or &REST.
3299 * The debugger no longer complains about encountering the top of the
3300 stack when you type "FRAME 0" to explicitly instruct it to go to
3301 the top of the stack. And it now prints the frame you request even
3302 if it's the current frame (instead of saying "You are here.").
3303 * As specified by ANSI, the system now always prints keywords
3304 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3306 * The default initial SIZE of HASH-TABLEs is now smaller.
3307 * Type information from CLOS class dispatch is now propagated
3308 into DEFMETHOD bodies, so that e.g.
3309 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3311 is now basically equivalent to
3312 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3313 (DECLARE (TYPE SINGLE-FLOAT X))
3315 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3316 operation, without having to do run-time type dispatch.
3317 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3318 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3319 * Since I don't seem to be making big file reorganizations very often
3320 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3321 is overflowing my ability to conveniently back them up), I've finally
3322 checked the system into CVS. (The CVS repository is on my home system,
3323 not at SourceForge -- putting it on SourceForge might come later.)
3324 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3325 high-level GC-NOTIFY-FOO functions send their output. (There's
3326 still very little control of where low-level verbose GC functions
3327 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3328 less than it used to -- the GC-NOTIFY-FOO functions are now under
3329 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3330 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3331 in only one place in the source code, and propagates it automatically
3332 everywhere that it's needed. Thus e.g. when I bump the version from
3333 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3334 * The C source files now include boilerplate legalese and documentation
3335 at the head of each file (just as the Lisp source files already did).
3336 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3337 to his page will be replaced with a link to his new CLiki service.
3339 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3341 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3342 * The build process now looks for GNU make under the default name "gmake",
3343 instead of "make" as it used to. If GNU make is not available as "gmake"
3344 on your system, you can change this default behavior by setting the
3345 GNUMAKE environment variable.
3346 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3347 can build without error under CMU CL.
3349 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3351 * There is now a partial SBCL user manual (with some new text and some
3352 text cribbed from the CMU CL manual).
3353 * The beginnings of a profiler have been added (starting with the
3354 CMU CL profiler and simplifying and cleaning up). Eventually the
3355 main interface should be through the TRACE macro, but for now,
3356 it's still accessed through vaguely CMU-CL-style functions and macros
3357 exported from the package SB-PROFILE.
3358 * Some problems left over from porting CMU CL to the new
3359 cross-compilation bootstrap process have been cleaned up:
3360 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3361 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3362 part when getting rid of the compiler *BACKEND* stuff.)
3363 ** The value of *NULL-TYPE* was screwed up, because it was
3364 being initialized before the type system knew the final
3365 definition of the 'NULL type. This screwed up several key
3366 optimizations in the compiler, causing inefficiency in all sorts
3367 of places. (I found it because I wanted to understand why
3368 GET-INTERNAL-RUN-TIME was consing.)
3369 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3370 PROCLAIM FTYPE information. Unfortunately this broke binary
3371 compatibility again, since now the forms output by DEFGENERIC
3372 to refer to functions which didn't exist in 0.6.3.
3373 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3374 can use the new (as of 0.6.3) transform for SOME into MAP into
3376 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3377 values to (INTEGER 0 1000000), so that the time code will no longer
3378 occasionally get blown up by Linux returning 1000000 microseconds
3379 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3380 its output conform to the ANSI spec. (Alas, this makes its output
3381 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3382 * A full call to MAP NIL with a single sequence argument no longer conses.
3383 * fixes to problems pointed out by Martin Atzmueller:
3384 * The manual page no longer talks about multiprocessing as though
3385 it were currently supported.
3386 * The ILISP support patches have been removed from the distribution,
3387 because as of version 5.10.1, ILISP now supports SBCL without us
3388 having to maintain patches.
3389 * added a modified version of Raymond Toy's recent CMU CL patch for
3390 EQUALP comparison of HASH-TABLE
3392 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3394 * The system still can't cross-compile itself with
3395 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3396 entails), but at least it can compile more of itself that way
3397 than it used to be able to, and various buglets which were uncovered
3398 by trying to cross-compile itself that way have now been fixed.
3399 * This release breaks binary compatibility again. This time
3400 at least I've incremented the FASL file format version to 2, so that the
3401 problem can be detected reliably instead of just causing weird errors.
3402 * various new style warnings:
3403 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3404 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3405 ** using the lexical binding of a variable named in the *FOO* style
3406 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3407 as specified by ANSI.
3408 * *RANDOM-STATE* is no longer automatically initialized from
3409 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3410 default behavior of the system is to repeat its behavior every time
3411 it's run. If you'd like to change this behavior, you can always
3412 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3413 old convention there was no comparably easy way to get the system to
3414 repeat its behavior every time it was run.
3415 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3416 FTYPE declarations has been removed, in favor of their ANSI
3417 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3418 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3419 the types of their sequence arguments can be determined at compile time.
3420 This is done through a new open code expansion for MAP which eliminates
3421 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3422 argument types can be determined at compile time.
3423 * The optimizer now transforms COERCE into an identity operation when it
3424 can prove that the coerced object is already of the correct type. (This
3425 can be a win for machine generated code, including the output of other
3426 optimization transforms, such as the MAP transform above.)
3427 * Credit information has been moved from source file headers into CREDITS.
3428 * Source file headers have been made more standard.
3429 * The CASE macro now compiles without complaining even when it has
3432 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3434 * (Note that the way that the PCL macroexpansions were rewritten
3435 to accommodate the change in DEFGENERIC below breaks binary
3436 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3437 not run under sbcl-0.6.2. Once we get out of alpha releases,
3438 i.e. hit release 1.0.0, we'll probably try to maintain binary
3439 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3440 and sbcl-1.4.4. Until then, however, it might be fairly common
3441 for maintenance releases to break binary compatibility.)
3442 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3444 * The reporting of unhandled signals has been changed to print some
3445 explanatory text as well as the report form. (Previously only
3446 the report form was printed.)
3447 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3448 it defines, so that the compiler no longer issues undefined function
3449 warnings for compiled-but-not-yet-loaded generic functions.
3450 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3451 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3452 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3453 section of the ANSI spec are supported.
3454 * The "" nickname for the "KEYWORD" package has been removed.
3455 The reader still handles symbol tokens which begin with a package marker
3456 as keywords, but it doesn't expose its mechanism for doing so in the
3457 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3458 * The system now issues STYLE-WARNINGs for contradictory TYPE
3459 proclamations. (Warnings for contradictory FTYPE proclamations would
3460 be nice too, but those can't be done usefully unless the type system
3461 is made smarter about FUNCTION types.)
3462 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3463 systematized, so that "*target-*.lisp is supposed to exist only on the
3464 target and imply that there's a related file which exists on the
3465 host, and *host-*.lisp is supposed to exist only on the host and imply
3466 that there's a related file which exists on the target. This involves a
3467 lot of renaming. Hopefully the acute confusion caused by the renaming
3468 will be justified by the reduction in chronic confusion..
3469 ** runtime-type.lisp -> early-target-type.lisp
3470 ** target-type.lisp -> late-target-type.lisp
3471 ** early-host-format.lisp -> early-format.lisp
3472 ** late-host-format.lisp -> late-format.lisp
3473 ** host-error.lisp -> misc-error.lisp
3474 ** early-error.lisp -> early-target-error.lisp
3475 ** late-error.lisp -> late-target-error.lisp
3476 ** host-defboot.lisp -> early-defboot.lisp
3477 ** code/misc.lisp -> code/target-misc.lisp
3478 ** code/host-misc.lisp -> code/misc.lisp
3479 ** code/numbers.lisp -> code/target-numbers.lisp
3480 ** code/early-numbers.lisp -> numbers.lisp
3481 ** early-host-type.lisp -> early-type.lisp
3482 ** late-host-type.lisp -> late-type.lisp
3483 ** host-typep.lisp -> typep.lisp
3484 ** load.lisp -> target-load.lisp
3485 ** host-load.lisp -> load.lisp
3486 ** host-disassem.lisp -> disassem.lisp
3487 ** host-insts.lisp -> insts.lisp
3488 ** byte-comp.lisp -> target-byte-comp.lisp
3489 ** host-byte-comp.lisp -> byte-comp.lisp
3490 ** host-signal.lisp -> signal.lisp
3491 ** host-defstruct.lisp -> defstruct.lisp
3492 ** late-target-type.lisp -> deftypes-for-target.lisp
3493 Furthermore, several other previously target-only files foo.lisp (e.g.
3494 hash-table.lisp and random.lisp) have been split into a target-and-host
3495 foo.lisp file and a target-only target-foo.lisp file, with their key type
3496 definitions in the target-and-host part, so that the cross-compiler will
3497 know more about target types.
3498 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3499 gone away. In their place are various *BACKEND-FOO* variables
3500 corresponding to the slots of the old structure.
3501 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3502 into the target SBCL has been fixed.
3503 * The chill.lisp system for loading cold code into a running SBCL
3505 * Support for the CMU CL "scavenger hook" extension has been removed.
3506 (It was undocumented and unused in the CMU CL sources that SBCL was
3507 derived from, and stale in sbcl-0.6.1.)
3508 * Various errors in the cross-compiler type system were detected
3509 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3510 (enabling various consistency checks). Many of them were fixed,
3511 but some hard problems remain, so the compiler is back to
3512 running without *TYPE-SYSTEM-INITIALIZED* for now.
3513 * As part of the cross-compiler type system cleanup, I implemented
3514 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3515 * I have started adding UNCROSS calls throughout the type system
3516 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3517 on cross-compiler input files will be able to go away, and various
3519 * CONSTANTP now returns true for quoted forms (as explicitly required
3522 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3524 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3525 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3526 (MAKE-LIST -1). In the longer term, it ought to become true
3527 that declarations are assertions even at SAFETY 1. For now, it's not
3528 quite true even at SAFETY 3, but it's at least more nearly true..
3529 (Note that this change seems to increases the size of the system by
3530 O(5%) and to decrease the speed of the compiler by 20% or more.)
3531 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3532 for the problem of printing dozens of lines of distracting information
3533 about low-level system machinery as part of the top stack frame
3534 on entry to the debugger when an undefined function was called.
3535 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3536 is not reset to COMMON-LISP-USER.
3537 * Compilation of stuff related to dyncount.lisp has been made conditional
3538 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3539 smaller. The various dyncount-related symbols have been moved into
3540 a new "SB-DYNCOUNT" package.
3541 * tty-inspect.lisp has been renamed to inspect.lisp.
3542 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3543 feature has gone away. (When we eventually port to other flavors of
3544 libc and/or Unix, we'll try to make the differences between flavors
3545 invisible at the user level.)
3546 * Various other *FEATURES* tags, and/or their associated conditionals,
3547 have been removed if obsolescent, or given better documentation, or
3548 sometimes given more-mnemonic names.
3550 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3552 * tidied up "make.sh" script
3553 * tidied up system directory structure
3554 * better "clean.sh" behavior
3555 * added doc/FOR-CMUCL-DEVELOPERS
3556 * many many small tweaks to output format, e.g. removing possibly-confusing
3557 trailing #\. character in DESCRIBE-INSTANCE
3558 * (EQUALP #\A 'A) no longer signals an error.
3559 * new hashing code, including EQUALP hashing
3560 * tidied up Lisp initialization and toplevel
3561 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3562 * command line argument processing
3563 * added POSIX-GETENV function to deal with Unix-ish environment variables
3564 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3565 terminating SBCL on EOF
3566 * non-verbose GC by default
3567 * There is no more "sbcl" shell script; the sbcl file is now the C
3568 runtime executable (just like CMU CL).
3569 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3571 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3572 symbol and package information as Lisp native symbol and package objects
3573 instead of strings naming symbols and strings naming packages. This way,
3574 whenever packages are renamed (as in warm init), debug information is
3575 transformed along with everything else.
3576 * tweaked the optimization policy declarations which control the building
3577 of SBCL itself. Now, among other things, the system no longer saves
3578 source location debugging information. (This helps two problems at once
3579 by reducing SBCL size and by keeping SBCL from trying to look for its
3580 sources -- which may not exist -- when reporting errors.)
3581 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3582 debugging and testing purposes
3583 * cleaned up printing, making the printer call PRINT-OBJECT for
3584 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3585 methods, giving nearly-ANSI behavior
3586 * converted almost all special variables to use *FOO* naming convention
3587 * deleted PARSE-TIME functionality, since it can be done portably
3588 * moved some files out of cold init into warm init
3589 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3591 * regularized formatting of source files
3592 * added an install.sh script
3593 * fixed ridiculous memory usage of cross-compiler by making
3594 compiler/alloc.lisp not try to do pooling unless it can hook
3595 itself into the GC of the cross-compilation host. Now the system
3596 builds nicely on my old laptop.
3597 * added :SB-ALLOC in target-features.lisp-expr
3598 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3599 was not implemented)
3600 * re-did condition handling and note reporting in the compiler. Notes
3601 are no longer handled by signalling conditions. Style warnings
3602 and warnings are handled more correctly and reported in such a way
3603 that it's easy to find one or the other in your output (so that you
3604 can e.g. figure out which of many problems caused COMPILE-FILE to
3606 * changed the severity of several compiler warnings from full WARNING
3607 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3608 compiler note reporting so that it doesn't use the condition system
3609 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3610 COMPILE-FILE command)
3611 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3612 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3613 no longer supported, since their implementation was deeply intertwingled
3614 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3615 * removed bogus "support" for compiler macros named (SETF FOO), and
3616 removed the compiler macro for SETF INFO (but only after making a fool
3617 of myself on the cmucl-imp mailing list by posting a bogus patch for
3618 DEFINE-COMPILER-MACRO..)
3619 * Compiled files containing forms which have side effects on the Lisp
3620 reader (such as DEFPACKAGE forms) are now handled more correctly.
3621 (Compiler queuing of top level lambdas has been suppressed by setting
3622 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3623 * deleted various currently-unused source files, e.g. gengc.lisp. They
3624 may be added back at some point e.g. when porting to other architectures,
3625 but until they are it's distracting to distribute them and to try to
3627 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3628 there were so many of them they're just distractions, and UNCROSS is
3629 known to be able to handle the current sources
3630 * moved PROFILE functionality into TRACE, so that it will be clear
3631 how the wrapping and unwrapping of functions when you profile them
3632 interacts with the wrapping and unwrapping of functions when you
3633 trace them. (Actually, the functionality isn't there yet, but at least
3634 the interface specification is there. Hopefully, the functionality will
3635 arrive with some future maintenance release.)
3636 * removed host-oops.lisp
3637 * changed signature of QUIT function to allow UNIX-CODE argument
3638 * fixed READ-SEQUENCE bug
3639 * tweaked verbose GC output so that it looks more like the progress
3640 output that ANSI specifies for functions like LOAD
3641 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3642 * added <http://sbcl.sourceforge.com> to the banner information printed by