1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
3 * incompatible change: SB-EXT package no longer contains the
4 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
5 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
7 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
9 * bug fix: loading of default sysinit file works. (thanks to Leonid
12 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
13 * feature: implemented the READER-METHOD-CLASS and
14 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
16 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
18 * optimization: faster LOGCOUNT implementation on x86 and x86-64
19 (thanks to Lutz Euler)
20 * optimization: hashing of general arrays and vectors has been
21 improved. (reported by Any Fingerhut)
22 * enhancement: SB-INTROSPECT is now able to find definitions of
23 profiled functions. (thanks to Troels Henriksen)
24 * enhancement: compiler-macro expansion applies now to FUNCALL forms
25 as well, allowing compiler-macros for SETF-functions to expand.
26 * enhancement: step-instrumentation no longer wraps known
27 single-value functions with multiple-value context, allowing
28 better type inference.
29 * fixed bug #337: use of MAKE-METHOD in method combination now works
30 even in the presence of user-defined method classes. (reported by
31 Bruno Haible and Pascal Costanza)
32 * fixed bug #339(c): if there are applicable methods not part of any
33 long-form method-combination group, call INVALID-METHOD-ERROR.
34 (reported by Bruno Haible)
35 * fixed bug #361: the :FUNCTION initarg in the protocol for
36 initialization of methods can now be used to override
37 internally-produced optimized functions. (reported by Bruno
39 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
40 system-provided lambda expression no longer cause warnings about
41 unbound #:|pv-table| symbols.
42 * bug fix: improved the handling of type declarations and the
43 detection of violations for keyword arguments with non-constant
45 * bug fix: potentially erronous calls to PATHNAME and
46 MERGE-PATHNAMES were being flushed in some cases.
47 (reported by Richard Kreuter)
48 * bug fix: compiled calls to TYPEP were mishandling obsolete
49 instances. (reported by James Bielman and Attila Lendvai)
50 * bug fix: format strings with ~> without matching ~< no longer
51 trigger an AVER, but signal an understandable error instead.
52 (reported by Antonio Martinez)
53 * bug fix: specifying an output-file without a pathname-type for
54 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
55 of input-file instead of "fasl". (reported by Robert Dodier)
56 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
57 (reported by James Y Knight).
58 * bug fix: compiler-macros-function did not consider the environment
59 argument for shadowing by local functions.
60 * bug fix: compiler-macros expansion was inhibited by local INLINE
62 * bug fix: inline expansions of known functions were subject to
63 step-instrumentation in high debug policies, leading to problems
65 * bug fix: compiler failed to differentiate between different CONS
67 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
68 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
69 * bug fix: #368: incorrect use of expressed vs. upgraded array
71 * bug fix: #306a: more precise unions of array types.
72 * thread-safety improvements:
73 ** CONDITION-WAIT could return early on Linux, if the thread was
74 interrupted and subsequently continued with SIGCONT.
75 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
77 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
78 * added support for the ucs-2 external format. (contributed by Ivan
80 * minor incompatible change: pretty printing of objects of type
81 (cons symbol) is, in the default pprint-dispatch-table, now
82 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
84 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
85 called later in a class's lifetime, possibly as late as when the
86 first instance of the class is created. Previously,
87 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
88 class became finalizeable.
89 * fixed bug: FILE-POSITION sometimes returned inconsistent results
90 for multibyte external-format streams. (thanks to "vbzoli")
91 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
92 with :ALLOCATION :CLASS inherited from superclasses of the
94 * fixed bug: anonymous classes can now be created using the :NAME
95 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
96 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
97 * fixed bug: core-files saved with :EXECUTABLE T can again be
98 executed when SBCL_HOME isn't set. (reported by James Knight)
99 * fixed bug: toplevel LOCALLY forms with declarations could
100 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
101 * fixed bug: printing from several different threads using different
102 values of *print-case* could cause invalid output, due to
103 some internal special variables of the printer not being bound
104 thread-locally (reported by Max Mikhanosha)
105 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
106 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
107 (reported by Pascal Costanza)
108 * fixed bug: FINALIZE-INHERITANCE is called from
109 REINITIALIZE-INSTANCE on classes when the class has previously
110 been finalized, as required by AMOP.
111 * minor code generation optimizations:
112 ** better register allocation in CLOS dispatching functions
113 ** overflow detection when coercing signed bytes to fixnums on x86-64
114 ** is now implemented with one IMUL instruction instead of three shifts
115 ** more efficient bit-vector access on x86 and x86-64
116 ** more efficient access to raw structure slots on x86 and x86-64
117 * fixed some bugs revealed by Paul Dietz' test suite:
118 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
121 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
122 * feature: thread support on Solaris/x86, and experimental thread support
124 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
126 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
127 default method for SLOT-UNBOUND.
128 * minor incompatible change: prevent the user from specializing the
129 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
130 somewhat counter to the intent of the protocol, I (CSR) think, and
131 additionally it just doesn't work in SBCL as currently
132 implemented, thanks to optimizations (that are always valid for
133 the other three SLOT-VALUEish functions, but not for the setter).
134 * minor incompatible change: the :SB-LDB feature is now enabled by
135 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
136 the low-level debugger.
137 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
138 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
139 down to an SB-SYS:FD-STREAM, allowing direct communication in
140 more cases. Temporary files and pipes are still used as a fallback
142 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
143 on the non-reentrant C functions localtime(3) and gmtime(3).
144 * bug fix: global optimization policy was not visible in LOCALLY and
146 * bug fix: class objects can be used as specializers in methods.
147 (reported by Pascal Costanza)
148 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
149 with a type error. (reported by blitz_ on #lisp)
150 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
151 failed with a type error. (reported by Pascal Bourguignon)
152 * bug fix: merging pathnames against defaults with :DIRECTORY
153 starting with '(:RELATIVE :BACK) should preserve the :BACK.
154 (reported by James Y Knight)
155 * bug fix: saving large (>2GB) cores on x86-64 now works
156 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
157 constant index and a (simple-array (signed-byte 32)) array
158 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
159 error (patch by Robert J. Macomber)
160 * feature: TIME now displays the amount of run-time spent in GC
161 * bug fix: The debugger now does a better job of respecting
162 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
163 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
164 workaround for bug 403.)
165 * bug fix: floating point exception handling now works on FreeBSD
166 (thanks to NIIMI Satoshi)
167 * fixed some bugs revealed by Paul Dietz' test suite:
168 ** MISC.641: LET-conversion were not supposed to work in late
170 * improvements to the Win32/x86 port:
171 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
172 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
174 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
175 * new feature: source path information is generated for macro-expansion
176 errors for use in IDE's like Slime (thanks to Helmut Eller)
177 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
178 * bug fix: compiler does not loop forever on an invalid type in
180 * improvement: compilation of most CLOS applications is significantly
182 * optimization: added a limited bytecode compiler for simple toplevel
183 forms, speeding up compilation and FASL loading
185 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
186 * minor incompatible change: in sbcl-0.9.11 (but not earlier
187 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
188 into subclasses of the finalized class. Now user calls to
189 FINALIZE-INHERITANCE finalize just the one class, and calls by the
190 system return before any subclasses are finalized.
191 * minor incompatible change: The reader no longer ignores errors
192 regarding non-existent packages in #+ and #- feature tests.
193 * new feature: command line options --no-sysinit, --no-userinit to
194 inhibit loading the corresponding init files
195 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
196 for sending data through UDP sockets (thanks to François-René Rideau)
197 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
198 error is signalled instead (thanks to François-René Rideau)
199 * minor incompatible change: Error signalling behaviour of lexical
200 operations violating package locks has changed slightly. Refer to
201 documentation on package locks for details.
202 * enhancement: EVAL can process IF-expressions without resorting to the
204 * bug fix: Some operations involving SIN, COS, or TAN weren't being
205 constant-folded properly due to missing out-of-line functions.
206 (reported by Mika Pihlajamäki)
207 * bug fix: LISTEN sometimes returned T even in cases where no data was
208 immediately available from the stream
209 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
210 were reversed. (reported by Levente Mészáros)
211 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
212 when given a vector displaced to an adjustable array. (reported
214 * bug fix: derivation of float boundaries from numbers outside the
215 appropriate float range (reported by John Wiseman)
216 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
218 * bug fix: precomputing cache entries for generic functions with
219 some subclasses of specializers as yet invalid does not attempt to
220 fill a cache line with a negative offset. (reported by Levente
222 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
223 allow condition class objects as arguments to DOCUMENTATION and
224 (SETF DOCUMENTATION); only find and set documentation for
225 structure names for the STRUCTURE doc-type. (suggested by Gary
227 * improvements to the Win32/x86 port:
228 ** (user-homedir-pathname) and default initialization file
229 locations now know about the user's "Documents and Settings"
230 directory (thanks to Yaroslav Kavenchuk)
231 ** run-program is implemented (thanks to Mike Thomas)
232 ** sockets support (thanks to Timothy Ritchey)
233 ** better backtrace support (thanks to Alastair Bridgewater)
234 ** sb-grovel supported
235 ** asdf-install and sb-posix work somewhat
236 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
237 * improvements to the Solaris/x86 port:
238 ** works on Solaris 11/Solaris Express
239 ** floating-point exception handling support
240 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
241 * fixed some bugs revealed by Paul Dietz' test suite:
242 ** REMOVE-METHOD returns its generic function argument even when
243 the method is not one of the generic functions' methods.
244 ** objects declared as MEMBER types can be admissible arguments to
246 ** printing characters should simply be printed by the FORMAT ~:C
248 ** compiler failure when compiling functions with hairy constant
249 defaults for optional parameters.
250 ** compiler produces wrong code when MAYBE-INLINE-expanding a
251 function, which is already optimized.
253 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
254 * new platform: experimental support for SBCL x86/Darwin, including
255 MacOS X 10.4.5 on Intel.
256 * new feature: Unicode character names are now known to the system
257 (through CHAR-NAME and NAME-CHAR).
258 * new feature: the filesystem location of SBCL's core file is
259 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
260 * minor incompatible change: the contrib modules SB-POSIX and
261 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
262 this change is to make it easier to distribute
263 location-independent binaries.
264 * bug fix: as implied by AMOP, standardized classes no longer have
265 slots named by external symbols of public packages. (reported by
267 * optimization: calling functions via constant symbols -- as in
268 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
269 via the function object as in (FUNCALL #'FOO).
270 * optimization: on x86 and x86-64, the calling convention for the
271 case of dealing with an unknown number of values has been altered
272 to be friendlier to the prediction heuristics implemented,
273 particularly with reference to CALL and RET pairing. (thanks to
274 Alastair Bridgewater)
275 * optimization: on x86, the code for access to thread-local symbol
276 values and binding/unbinding of thread-local symbols is smaller.
277 (thanks to Alastair Bridgewater)
278 * enhancement: CONSTANTP is now able to determine constantness of
279 more complex forms, including calls to constant-foldable standardized
280 functions and some special forms beyond QUOTE.
281 * fixed bug: occasional GC crashes on Solaris/x86
282 * optimization: x86-64 supports stack allocation of results of simple
283 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
284 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
285 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
286 (thanks to James Knight)
287 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
288 by the standard (thanks to Stephen Compall)
290 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
291 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
292 be used for bundling the runtime and the core file into one
293 executable binary. This feature is not currently supported on all SBCL
294 platforms. (thanks to James Bielman and NIIMI Satoshi)
295 * new feature: a generational or ephemeral garbage collector is now
296 the default on the PowerPC platform (both Linux and Darwin). The
297 old Cheney (stop and copy) collector is a build-time option.
298 (thanks to Cyrus Harmon, after Raymond Toy)
299 * minor incompatible change: the method by which SBCL finds its
300 contributed modules has changed; it no longer relies on symbolic
301 links from an $SBCL_HOME/systems directory, but searches directly
302 in the subdirectories of $SBCL_HOME.
303 * enhancement: the dynamic heap size on the Linux/PPC platform is
304 markedly larger, even using the older Cheney garbage collector.
305 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
306 certain complicated string types. (reported by Gary King)
307 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
308 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
309 * fixed bug: DOCUMENTATION on structures no longer signals an
310 error if no structure type of the right name exists. (reported by
312 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
313 applicable non-standard primary or :AROUND method on
314 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
315 no longer cause unbound variable errors. (reported by Kevin Reid)
316 * fixed bug: metacircle resolution in cases where methods have slots
317 added before the slots from STANDARD-METHOD. (reported by Jean
319 * fixed bug: the Power PC assembly code for calling into lisp
320 sometimes computed its return address wrongly (depending on the
321 15th bit of the address, fixed at link time). This used to
322 manifest itself in a segmentation violation while building PCL.
323 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
324 many others over the years)
325 * fixed bug: ROOM no longer reports silly numbers for stack usage if
326 the stack pointer (treated as a signed integer) is negative.
327 (thanks to Peter van Eynde)
329 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
330 * new platform: experimental support for the Windows operating
331 system has been added. (thanks to Alastair Bridgewater)
332 * fixed several bugs in and robustified the PPC FFI (including
333 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
334 * bug fix: allow non-simple string symbol names (reported by Paul
336 * bug fix: interrupt handling on NetBSD (thanks to Richard M
338 * bug fix: saving a core corrupted callbacks on x86/x86-64
339 * bug fix: closed a loophole in metacircularity detection and
340 grounding in the PCL implementation of CLOS.
341 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
342 (reported by tomppa on #lisp)
343 * bug fix: clear the direction flag on Lisp -> C transitions, as
344 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
345 (reported by Andrej Grozin and Hendrik Maryns)
346 * optimization: major improvements to GC efficiency on GENCGC platforms
347 * optimization: faster implementation of EQUAL
348 * optimization: emit more efficient opcodes for some common
349 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
350 * optimization: several other minor code-generation improvements on x86-64
351 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
353 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
354 * minor incompatible change: (SETF CLASS-NAME) and (SETF
355 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
356 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
357 by ANSI as a generic function, and for consistency (SETF
358 GENERIC-FUNCTION-NAME) is treated likewise.
359 * fixed bug #233.b: make constraint propagation notice when a variable
360 value is changed after it is referenced but before it is used
361 * fixed bug #296: no more arbitrary behaviour from filenames with
362 odd characters as --load arguments. (reported by Adam Warner)
363 * fixed bug #390: :CHARACTER-SET pathname components now work as
364 expected. (reported by Tim Daly Jr)
365 * fixed bug #391: complicated :TYPE intersections in slot
366 definitions no longer cause an error in PCL internals.
367 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
368 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
369 returning the number of octets which would be written to the
370 file-stream. (thanks to Robert J. Macomber)
371 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
372 arguments to the internal stream functions. (thanks to David
374 * bug fix: stack exhaustion is now handled on the x86/SunOS
375 platform. (thanks to Daisuke Homma)
376 * bug fix: more accurate ROOM results on GENCGC platforms
377 * optimization: improved type inference for arithmetic-for
378 index variables in LOOP
379 * optimization: faster floating-point SQRT on x86-64
380 * fixed some bugs revealed by Paul Dietz' test suite:
381 ** DOCUMENTATION returns NIL instead of "" for method combinations
382 that don't have a docstring
384 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
385 * minor incompatible change: (SETF CLASS-NAME) and (SETF
386 GENERIC-FUNCTION-NAME) are no longer generic functions, and
387 therefore are not customizeable by user code (as seems to be at
388 least permitted and maybe required by AMOP). As a consolation,
389 however, the SBCL implementation of these functions now calls
390 REINITIALIZE-INSTANCE as specified by AMOP.
391 * bug fix: slot-definition documentation is propagated as per ANSI
392 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
393 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
394 argument, as do eslotd initialization methods. (from Pascal
395 Costanza's "Closer" project)
396 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
397 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
399 * bug fix: it is now possible to have more than one subclass of
400 STANDARD-GENERIC-FUNCTION without causing stack overflow.
401 (reported by Bruno Haible, Pascal Costanza and others)
402 * bug fix: the dependent update protocol now works for generic
403 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
405 * bug fix: condition-class instances corresponding to
406 DEFINE-CONDITION forms are now created eagerly. (reported by
407 Kalle Olavi Niemitalo on comp.lang.lisp)
408 * bug fix: floating point printing is more accurate in some
409 circumstances. (thanks to Simon Alexander)
410 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
411 merged with *DEFAULT-PATHNAME-DEFAULTS*.
412 * bug fix: callbacks on OS X now preserve stack-alignment.
413 (thanks to Cyrus Harmon)
414 * enhancement: the x86-64 disassembler is much better at
415 disassembling SSE instructions. (thanks to Lutz Euler)
416 * enhancement: CHECK-TYPE on a variable now allows type-inference
417 (thanks to Vincent Arkesteijn)
418 * optimization: improved performance of EUC-JP external format.
419 (thanks to NIIMI Satoshi)
420 * optimization: performance improvements to IO on file streams of
421 :ELEMENT-TYPE CHARACTER
422 * optimization: much faster memory allocation on x86-64
423 * optimization: faster garbage collections (latency and throughput)
425 * optimization: faster bignum subtraction and division on x86 and x86-64
426 (thanks to Lutz Euler)
427 * optimization: more accurate type-inference for loops that use a
428 floating point index variable or a negative step.
430 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
431 * bug fix: add a workaround to SBCL looping infinitely at startup on
432 Linux kernels with apparently buggy implementations of personality().
433 (thanks to Svein Ove Aas)
434 * bug fix: Unicode symbols are correctly printed in LDB backtraces
435 (thanks to David Lichteblau)
436 * bug fix: local bindings shadow global symbol macros for
437 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
438 * optimization: non-open coded uses of numeric comparison operators
439 (e.g. >) no longer cons when called with more than one parameter
440 on platforms supporting dynamic-extent allocation.
441 * enhancement: saving cores with foreign code loaded is now supported
442 on MIPS/Linux in addition to the previously supported platforms.
443 * bug fix: FIND-RESTART now tests for activity, not applicability when given
444 a restart object as identifier. (reported by Helmut Eller for CMUCL)
445 * bug fix: division by zero in sb-sprof when no samples were collected
446 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
447 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
448 (thanks to Alexander Kjeldaas)
449 * new feature: ignoring the return values of destructive functions
450 like NREVERSE signals a compile-time style-warning.
451 (thanks to Kevin Reid)
452 * new feature: the alignment of alien structure fields can be
453 explicitly specified. (thanks to Cyrus Harmon)
454 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
455 and dump core on SIGQUIT
457 ** incompatible change: threads do not inherit values of specials
458 from their parents (see manual)
459 ** bug fix: threads stacks belonging to dead threads are freed by the
460 next exiting thread, no need to gc to collect thread stacks anymore
461 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
462 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
463 ** bug fix: dynamic variable and thread start related gc lossage
464 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
466 * fixed some bugs revealed by Paul Dietz' test suite:
467 ** SUBTYPEP is slightly more accurate on heinously complicated
468 CONS types where some of the members have uncertain (in the
469 NIL, NIL sense) type relationships to each other.
471 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
472 no longer purified unless :PURIFY T is explicitly specified.
473 ** Non-purified cores are significantly smaller than before
475 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
476 * new feature: timers based on Zach Beane's excellent timer package
477 * added support for the following external formats: koi8-u,
478 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
479 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
480 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
481 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
482 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
483 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
484 * incompatible change: a threaded SBCL will no longer revert to
485 non-threaded mode on non-NPTL systems, but refuse to start entirely.
486 * bug fix: interrupts are disabled until startup is complete; no
487 more sigsegvs when receiving a signal to soon
488 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
490 * bug fix: add a workaround for the memory randomization features in
491 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
492 workaround will only be in effect on systems with the proc filesystem
494 * bug fix: printing objects of type HASH-TABLE signals a
495 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
497 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
498 have been running for over 50 days. (reported by Gilbert Baumann)
499 * bug fix: the logic for getting names of functions gets less
500 confused when confronded with alternate-metaclass
501 funcallable-instances. (reported by Cyrus Harmon)
502 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
503 consistent, even on internal alternate-metaclass objects.
504 * bug fix: flush closure information collected by physical
505 environment analysis prepass before the main pass. (bug reported
507 * bug fix: compiler pack phase does not modify a hashtable, which is
508 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
509 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
510 may be expanded. (reported by Alexander <malishev> on c.l.l)
511 * bug fix: no more style-warnings when compiling code using LAST
512 under high-SPEED low-SPACE settings. (reported by David Wallin
514 * fixed some incompatibilities between SBCL's MOP and the MOP
516 ** the METAOBJECT class is now implemented;
517 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
518 STANDARD-OBJECT, as required;
519 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
520 now compatible (as required by VALIDATE-SUPERCLASS); there
521 remains a consistency requirement over the presence or absence
522 of the FUNCTION class in the superclass list of finalized
523 classes; see the manual for more details;
524 ** the :AROUND method for COMPUTE-SLOTS on
525 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
526 requested slot ordering.
528 ** bug fix: parent thread now can be gc'ed even with a live
530 ** bug fix: binding a special with PROGV to no value is not
531 the same as that symbol not having been bound (thanks to
533 ** bug fix: binding specials is thread safe (thanks to
535 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
536 and SB-SPROF do not die with 'no handler for signal XX in
537 interrupt_handle_now(..)' anymore
538 ** bug fix: WITH-TIMEOUT works with multiple running threads
539 * fixed some bugs revealed by Paul Dietz' test suite:
540 ** ENSURE-GENERIC-FUNCTION should take a method class object for
541 the :method-class keyword argument.
543 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
544 * new port: the Solaris operating system on x86 processors is now
545 mostly supported, though some rough edges in the environment
546 remain. (thanks to Daisuke Homma)
547 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
548 space for its heap. (thanks to Thiemo Seufer)
549 * optimization: SBCL on MIPS platforms now supports dynamic-extent
550 closures. (thanks to Thiemo Seufer)
551 * minor incompatible change: eof selects abort in the debugger.
552 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
553 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
555 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
556 deprecated, and will go away in a future revision of SBCL.
557 * minor incompatible change: GC-ON and GC-OFF are no longer
558 implemented with a counter, it does not matter how many times gc
559 is switched on or off
560 * bug fix: discriminating functions for generic function classes
561 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
562 make invalid assumptions about method precedence order. (reported
564 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
565 platforms. (thanks to Thiemo Seufer)
566 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
567 * bug fix: correct pathname printing with printer escaping is on.
568 (thanks to Kevin Reid)
569 * bug fix: complex VOP definitions in "user-space" no longer trigger
570 package locks. (reported by Zach Beane)
571 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
572 for funcallable-instance functions, and is no different from
574 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
575 characters in the current readtable. (reported by Nicholas Neuss)
576 * bug fix: SUBTYPEP on various CONS types returns more a more
577 accurate acknowledgment of its certainty.
578 * optimizations: REMOVE-DUPLICATES now runs in linear time on
579 lists in some cases. This partially fixes bug 384.
580 * flush all standard streams before prompting in the REPL and the
582 * bug fix: signal handling and triggering gc do not conflict
583 directly anymore, in particular a high frequency sb-sprof does
584 not prevent gc from running
585 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
586 approximation for timezone and DST information between the
587 universal time epoch and the smallest negative 32-bit time_t.
588 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
589 year 1899 so long as the encoded time is non-negative.
590 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
591 the correct answer for non-constant rotate amounts when performing
592 an inline 32-bit rotation.
594 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
595 there is only one thread in the session
596 ** bug fix: memory leak for streams created in one thread and
597 written to in another
598 ** bug fix: lockup when compiled with gcc4
599 ** bug fix: race that allows the gc to be triggered when gc is
601 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
602 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
604 ** bug fix: finished threads are gc'ed properly
605 * fixed some bugs revealed by Paul Dietz' test suite:
606 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
607 has arguments with a different set of applicable methods from
608 the orignal arguments.
609 ** The type error thrown by MAP now has a correct expected-type
611 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
612 name a compiled function.
613 ** Three MISC tests where a large bignum was improperly coerced to
614 a float that couldn't represent that bignum during type
615 derivation were fixed.
616 ** SUBTYPEP can now handle types involving the negation of a
617 list-form FUNCTION type.
618 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
619 as (COMPLEX (AND RATIO (NOT FIXNUM))).
620 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
622 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
623 * New feature: Experimental support for bivalent streams: streams
624 opened with :element-type :default now allow character and binary
625 (unsigned-byte 8) I/O
626 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
627 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
629 * bug fix: no more highly sporadic "couldn't check whether ~S is
630 readable" when reading a stream and an interrupt hits in the middle
631 of a select system call
632 * compiler better recognizes complex arrays (reported by Eduardo
634 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
635 for variables on SBCL built with linkage-tables. (reported by Luis
637 * various error reporting improvements.
638 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
639 (Thanks to Thiemo Seufer)
640 * bug fix: nested reader invokations work correctly
641 * bug fix: it is possible to have simultaneous references to foreign
642 code and foreign data with the same name.
644 ** added x86-64 support
645 ** incompatible change: the threading api now works with thread
646 objects instead of thread ids
647 ** bug fix: threads are protected from signals and interruption when
648 starting up or going down
649 ** bug fix: a race where an exiting thread could lose its stack to gc
650 ** bug fix: don't halt on infinite error in threads if possible
651 ** fixed numerous gc deadlocks introduced in the pthread merge
652 ** bug fix: fixed thread safety issues in read and print
653 ** bug fix: debugger doesn't hang on session lock if interrupted at
654 an inappropriate moment
655 ** bug fix: run-program is now thread safe(r)
656 ** bug fix: inner with-recursive-lock no longer releases the mutex
657 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
658 * fixed some bugs revealed by Paul Dietz' test suite:
659 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
660 EXPECTED-TYPE slots filled.
661 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
663 ** MAKE-CONDITION accepts classes as type-designators.
664 ** COMPILE may never return NIL.
665 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
666 range before calling Unix time functions
668 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
669 * numerous signal handling fixes to increase stability
670 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
671 * minor incompatible change: we now correctly canonize default
672 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
673 as per the MOP, rather than the historical (INITARG INITFUNCTION
674 INITFORM). (reported by Bruno Haible)
675 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
676 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
677 for more information.
678 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
679 pathname is a directory pathname.
680 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
681 * dynamic space size on PPC has been increased to 768Mb. (thanks to
683 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
684 :METACLASS argument in addition to a class name. (reported by
685 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
686 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
687 (reported by Bruno Haible; patch from Gerd Moellmann)
688 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
690 * bug fix: more cleanups to the floating point exception handling on
691 x86-64 (thanks to James Knight)
692 * bug fix: the compiler does not try to constant fold calls of
693 COERCE and BIT-* functions when they return freshly constructed
694 objects. (reported by Nikodemus Siivola and Paul Dietz)
695 * optimization: improved the MIPS versions of generic (in the
696 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
697 * optimization: direct conversion of (unsigned-byte 32) to floats on
698 the PowerPC platform.
699 * optimization: structure instances with raw slots now use less
700 memory, and probably show better memory locality. (thanks to
702 * optimization: DYNAMIC-EXTENT declarations for lists and closures
703 are treated as requests for stack allocation on the x86-64,
704 Alpha-32, PPC and SPARC platforms.
705 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
706 the wrong file descriptor; implementation of SOCKET-OPEN-P.
707 (thanks to Tony Martinez)
709 ** gcing a dead thread can no longer lead to lockups
710 ** threads block signals until they are set up properly
711 ** errno is no longer shared by threads
712 ** interrupt-thread restores the eflags register on x86
713 ** fixed some lockups due to gc/thread interaction
714 * fixed some bugs revealed by Paul Dietz' test suite:
715 ** invalid dotted lists no longer raise a read error when
717 ** signal an error if a symbol that names a declaration is used
718 as the name of a type, or vice versa
719 ** allow using the (declare (typespec var*)) abbreviation for
720 (declare (type typespec var*)) with all type specifiers
721 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
722 ** always return NIL from PPRINT-POP when OBJECT is NIL
723 ** don't signal errors when pretty-printing malformed LABELS,
724 FLET or MACROLET forms
725 ** declarations in a DOLIST body are also in scope for the
727 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
729 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
732 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
733 * fixed cross-compiler leakages that prevented building a 32-bit
734 target with a 64-bit host compiler.
735 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
736 opened with :IF-EXISTS :OVERWRITE.
737 * fixed bug 281: error for an invalid qualifier in a short-form method
738 combination method is not signalled until the faulty method is called.
739 * bug fix: iteration variable type inferrer failed to deal with open
740 intervals. (reported by Alan Shields)
741 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
742 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
743 or more runtime options were provided to the sbcl binary.
744 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
745 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
746 * optimization: there's now a fast-path for fixnum arguments in the
747 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
748 * optimization: the code generated on x86-64 is more compact thanks
749 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
750 * bug fix: floating-point exception handling now partly works on
751 x86-64. (Thanks to James Knight)
752 * improvement to the MIPS backend from Thiemo Seufer: C-style
753 64-bit long long arguments and return values to alien functions
755 * fixed some bugs revealed by Paul Dietz' test suite:
756 ** the type-error signalled from WARN has a filled-in DATUM slot.
757 ** the type-error required when a stream is not associated with
758 a file has the stream as its datum.
759 ** type-errors on single-floats on x86-64 no longer have
760 :INVALID-OBJECT as the datum
761 ** the type-errors signalled for invalid function names now have
762 a correct expected type
763 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
764 for structures defined with a :TYPE. Documentation strings for
765 typed structures are no longer immediately discarded
766 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
767 broadcast streams and synonym streams. FILE-LENGTH now also works
768 on broadcast streams.
770 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
771 * incompatible change: the --noprogrammer option, deprecated since
772 version 0.7.5, has been removed. Please use the equivalent
773 --disable-debugger option instead.
774 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
776 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
777 inoperational for a while now) has been completely removed.
778 * null lexical environments are now printed as #<NULL-LEXENV>,
779 significantly reducing the amount of clutter in typical backtraces.
780 * documentation on weak pointers, finalization, and after GC hooks
781 has been added to the manual.
782 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
783 as other specialized array types, is much faster. SUBSEQ and
784 COPY-SEQ on such arrays have also been sped up.
785 * optimization: EQL is now more efficient when at least other argument
786 is known to be of type (OR FIXNUM (NOT NUMBER)).
787 * fixed bug: the runtime is now less vulnerable to changes in the
788 size of the SBCL object on OS X, and virtual memory is reserved for
789 all spaces that need to be at a fixed address.
790 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
791 * fixed bug: finalizers and after GC hooks that cause consing are now
793 * fixed bug: compiler error messages and summaries are now printed to
794 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
795 * fixed inference of the upper bound of an iteration variable.
796 (reported by Rajat Datta).
797 * fixed bug 211e: calling local functions with duplicated constant
798 keyword argument no longer causes a bogus style warning about an
800 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
801 ftype declaration to be disregarded. (reported by Dave Roberts)
802 * fixed bug 373: caused by erronous compilation of references to alien
803 variables in the runtime on ppc/darwin.
804 * fixed bug 376: CONJUGATE type deriver.
805 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
806 (reported by Baughn on #lisp)
807 * a cross-compiler bug on non-x86 platforms has been identified and
808 fixed. (thanks to Bruno Haible)
809 * improvements to the MIPS runtime code for increased stability.
810 (thanks to Thiemo Seufer)
811 * increased the maximimum compact environment size to allow
812 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
813 * partial workaround for bug 135: don't name the function we're
814 calling for hairy cases of EVAL, so as not to accumulate one environment
815 entry per call to EVAL. (reported by Kevin Reid)
816 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
817 * optimization: type testing for non-vector arrays should be faster.
818 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
820 * bug fix: setting 31st element of a bit vector to zero did not work
822 * bug fix: redefining a class definition which failed due to a
823 previous accessor / function clash now works (but see BUGS entry
824 #380 for more problems in this area). (thanks to Zach Beane)
825 * the long form of DEFINE-METHOD-COMBINATION disables method group
826 checking when given a single method group with pattern *. (thanks
828 * on x86 compiler supports stack allocation of results of simple
829 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
830 * support for building and running on Mac OS X 10.4 "Tiger" has been added
831 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
832 * fixed some bugs related to Unicode integration:
833 ** the restarts for recovering from input and output encoding
834 errors only appear when there is in fact such an error to
836 * fixed some bugs revealed by Paul Dietz' test suite:
837 ** MISC.549 and similar: late transformation of unsafe type
838 assertions into derived types caused unexpected code
840 ** SCALE-FLOAT type deriver is less wrong.
841 ** type derivers for EXP, LOG and similar functions compute result
842 types for complex arguments better.
843 ** (MISC.563) CONJUGATE type deriver works for very restricted
845 ** out-of-line type testers for character strings are available.
846 ** EQUAL compiler transform understands specialness of objects
848 ** accessing double-floats stored on the stack now works on x86-64.
849 ** debugger internals could sometimes create invalid lispobjs,
850 resulting in GC crashes.
851 ** MISC.548: type check weakening can convert required type into
853 ** initialization forms for bindings are not in scope of free special
856 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
857 * incompatible change: thread support for non-NPTL systems has
858 been removed - locking is buggy and unreliable. A threaded
859 SBCL build will now warn at startup and refuse to create
860 new threads, unless futex support is detected in the kernel
861 * incompatible change: the top level REPL now has only an ABORT
862 restart associated with it, not TOPLEVEL and ABORT as it used to.
863 TOP and TOPLEVEL are now available as debugger commands for
864 returning to the top level.
865 * incompatible change: forms evaluated in the REPL now use the
866 global optimization policy.
867 * incompatible change: user- and system-initialization files are
868 no longer processed with LOAD, but by READ and EVAL; hence the
869 global optimization policy, startup package, readtable, etc,
871 * The .fasl file format number has been incremented because of
872 various incompatible changes.
873 * internal entry point details and argument counts no longer appear
874 in backtraces unless explicitly requested by setting
875 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
876 * built-in and standard functions no longer have names like "top
877 level local call to FOO".
878 * fixed bug 32: functions defined in non-null lexical environments
879 now have more legible printed representation
880 * fixed bug 33: functions defined in non-null lexical environemnts
881 are now more amenable to inspection by INSPECT.
882 * workaround for bug 354: XEPs no longer appear in backtraces unless
883 explicitly requested.
884 * fixed bug: receiving the signal which results from attempting to
885 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
886 SIGBUS on other *BSDs) on architectures where the C stack is also
887 the Lisp stack (x86 and x86-64) from foreign code no longer leads
888 to debugger confusion or wild instability. (reported by Cheuksan
890 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
891 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
892 (reported by Lutz Euler)
893 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
894 compiled code. (reported by Paul Dietz)
895 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
896 specialized parameter to a method to something that is not TYPEP
897 the specializer is now possible.
898 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
899 face of package deletion.
900 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
901 pathname. (reported by David Tolpin on c.l.l)
902 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
903 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
904 STRING-STREAM and FILE-STREAM, respectively.
905 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
906 than previously; in addition, its test suite is now run on build.
907 (thanks to Luke Gorrie)
908 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
909 * optimization: added a immediate representation for single-floats
911 * fixed some bugs revealed by Paul Dietz' test suite:
912 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
913 ** attempting to create a package with a colliding nickname causes
914 correctable errors to be signalled.
915 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
916 ** several x86-64 backend bugs related to sign-extension of immediate
919 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
920 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
921 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
923 * fixed loading of multiply forward-referenced layouts.
924 (thanks to Cheuksan Wang)
925 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
926 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
927 (see COMPILE-FILE documentation for details of :PRINT option)
928 * fixed bugs 19 and 317: fixed-format floating point printing is
929 more accurate. This also fixes a bug reported by Adam Warner
930 related to the ~@F format directive.
931 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
933 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
934 dispatch table if the from-char is a dispatch macro character.
935 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
936 by the wordsize no longer ignore the last word. (reported by Lutz
938 * fixed bug in type checking of dynamic-extent variables. (reported
940 * optimization: sequence traversal functions use their freedom to
941 coerce function designators to functions.
942 * optimization: code with many calls to CLOS methods specialized on
943 CLOS classes has had redundant type checks removed.
944 * optimization: added declarations to speed up operations that access
945 the internal character database (for example STRING-UPCASE)
946 * optimization: comparison operations between floats and sufficiently small
947 fixnums no longer create extra rationals
948 * fixed some bugs related to Unicode integration:
949 ** portions of multibyte characters at the end of buffers for
950 character-based file input are correctly transferred to the
951 start of the buffer at the next read.
952 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
953 passing it through to OPEN.
954 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
955 argument given to internal calls to OPEN.
956 ** the built-in comment readers (introduced by character sequences
957 ";" and "#|") are more forgiving to encoding errors; they will
958 STYLE-WARN and then attempt to resync the stream at a character
959 boundary. (thanks to Teemu Kalvas)
960 * fixed some bugs in the x86-64 port:
961 ** Negative short int return values from c-calls are sign-extended
963 ** The stack is aligned to 16-bytes for c-calls, as required by
964 the ABI. (thanks to Cheuksan Wang)
965 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
966 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
967 for enums. (thanks to Vincent Arkesteijn)
968 ** Multiple small optimizations and bugfixes for floating point
970 * fixed some bugs revealed by Paul Dietz' test suite:
971 ** Space, Tab, Linefeed, Return and Page have the invalid
972 secondary constituent character trait.
973 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
975 ** WITH-INPUT-FROM-STRING should only update the index place on
977 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
979 ** Bit-array operations (BIT-AND and similar) worked incorrectly
980 with one-dimensional arrays with fill pointers.
981 ** TYPE-OF failed on a complex with an integer realpart and a
983 ** compiler failure during type inference for the code of form
984 (IF (EQL X (THE ...)) ...) (MISC.535).
986 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
987 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
988 platform. The port supports 61-bit fixnums, large memory spaces
989 and reloading shared object files.
990 * enhancement: saving cores with foreign code loaded is now
991 supported on ppc/Darwin in addition to the previously supported
993 * enhancement: the statistical profiler now walks deeper into the
994 call stack for more meaningful call-graphs and accrued time
995 reports (x86/x86-64 only). It also now reports time spent in
997 * enhancement: it is now possible to trace most individual methods
998 of a generic function in addition to tracing the generic function
1000 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1002 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1003 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1004 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1005 produces an error. (thanks to Vincent Arkesteijn)
1006 * bug fix: NAMESTRING on pathnames with :WILD components in their
1007 directories works correctly. (thanks to Artem V. Andreev)
1008 * fixed bug 125: compiler preserves identity of closures. (reported
1010 * bug fixed: functions with &REST arguments sometimes failed with
1011 "Undefined function" when compiled with (DEBUG 3). (reported by
1013 * bug fix: overflow during compiling of setting element of a bit
1014 vector with constant index and value. (reported by Timmy Douglas)
1015 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1016 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1017 * on x86 compiler partially supports stack allocation of dynamic-extent
1019 * GO and RETURN-FROM do not check the extent of their exit points
1020 when compiled with SAFETY 0.
1021 * fixed some bugs related to Unicode integration:
1022 ** encoding and decoding errors are now much more robustly
1023 handled; it should now be possible to recover even from invalid
1024 input or output to the terminal. (thanks to Teemu Kalvas)
1025 ** provided a first cut at implementing STRING-TO-OCTETS and
1026 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1027 ** altered the SB-MD5 contributed module slightly, changing the
1028 interface just enough for it to be supportable for builds where
1029 lisp characters are not eight bits.
1030 * fixed some bugs revealed by Paul Dietz' test suite:
1031 ** the FORMATTER-generated functions for ~V[ conditionals require
1032 the correct number of arguments.
1033 ** READ-FROM-STRING returns the mandated second value when applied
1034 to displaced strings.
1035 ** the #\Rubout and #\Backspace characters are treated as invalid
1036 constituent characters by the tokenizer.
1038 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1039 * new feature: reloading changed shared object files with
1040 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1041 * new feature: references to foreign variables and functions
1042 can now be compiled and loaded before the corresponding shared
1043 object file is loaded, as long as the foreign definitions are
1044 available at runtime.
1045 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1046 supported. (thanks to Dan Debertin)
1047 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1048 just keywords. (thanks to Vincent Arkesteijn)
1049 * fixed bug #331: structure-class instances corresponding to
1050 DEFSTRUCT forms are now created eagerly.
1051 * fixed bug #345: backtraces from calls to undefined functions work
1052 on x86 as well. Related bug #61 is now also partially fixed on x86
1053 (backtraces from throws to unknown catch tags.)
1054 * bug fix: lambda-list parsing is now stricter vrt. order and number
1055 of lambda-list keywords.
1056 * bug fix: as specified by AMOP, an error is signalled if a
1057 class-option appears multiple times in a DEFCLASS form. (reported
1059 * bug fix: RANDOM can be compiled when the compiler derives the type
1060 of its numeric argument as a disjoint set of small integers.
1061 (reported by Paul Dietz)
1062 * bug fix: starting a core saved with shared objects loaded when
1063 those objects are not available no longer causes threaded SBCL to
1064 hang. (reported by Sean Ross)
1065 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1067 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1068 argument, which must always be NIL. (reported by Kalle Niemitalo)
1069 * bug fix: printing 1.0d+23 no longer results in an error.
1070 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1071 * bug fix: structure slot setters preserve evaluation order. (thanks
1073 * fixed some bugs related to Unicode integration:
1074 ** RUN-PROGRAM can allow its child to take input from a Lisp
1075 stream. (reported by Stefan Scholl)
1076 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1077 locales. (reported by Ken Causey)
1078 * fixed some bugs revealed by Paul Dietz' test suite:
1079 ** INCF, DECF and REMF evaluate their place form as specified in
1081 ** FORMATTER expands ~{ ~} iteration directives with V or #
1082 parameters correctly.
1083 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1084 consequent uses no arguments correctly.
1085 ** the system has a partial understanding of the (COMPLEX RATIO)
1087 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1090 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1091 * new feature: a build-time option (controlled by the :SB-UNICODE
1092 keyword feature, enabled by default) for building the system with
1093 support for the entire 21-bit character space defined by the
1095 * new feature: the system now has rudimentary external-format
1096 support; the primary user-visible change at this time is that
1097 characters with the high bit set (such as lower-case-e-acute) will
1098 print correctly to a terminal in a UTF-8 environment.
1099 * minor incompatible change: BASE-CHAR no longer names a class;
1100 however, CHARACTER continues to do so, as required by ANSI.
1101 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1102 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1103 has been moved to the SB-EXT package (temporarily re-exported from
1105 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1106 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1108 * fixed bug #351: better error-handlind and reporting for malformed
1110 * fixed bug #350: bignum-printing is now more memory-efficient,
1111 allowing printing of very large bignums, eg. (expt 2 10000000).
1112 (reported by Bruno Haible)
1113 * fixed bug #302: better primitive-type selection for intersection
1115 * fixed bug #308: non-graphic characters now all have names, as
1116 required. (reported by Bruno Haible)
1117 * bug fix: redefining a class with different superclasses now correctly
1118 removes it from the direct-subclasses of its previous superclasses.
1119 (reported by David Morse)
1120 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1121 new value now works. (reported by Bruno Haible)
1122 * bug fix: correct canonicalization of multiple non-standard slot
1123 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1124 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1125 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1126 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1127 now exists, an signals an error.
1128 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1129 during macroexpansion for non-iteration variables as well. (reported
1130 by Bruno Haible for CMUCL)
1131 * bug fix: Cyclic structures and unprintable objects in compiler
1132 messages no longer cause errors. (reported by Bruno Haible)
1133 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1134 and READ-FROM-STRING all now return a primary value of NIL if
1135 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1136 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1137 (reported by Bruno Haible for CMUCL)
1138 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1139 do not designate a condition. (reported by Bruno Haible for
1141 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1142 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1143 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1144 permitting resolution in favour of any of the conflicting symbols.
1145 (reported by Bruno Haible for CMUCL)
1146 * bug fix: EQUAL compiler optimizations is less aggressive on
1147 strings which can potentially compare true despite having distinct
1148 specialized array element types.
1149 * bug fix: unit enumerations can be defined without dividing by
1150 zero. (thanks to Vincent Arkesteijn)
1151 * FORMAT compile-time argument count checking has been enhanced.
1152 (report from Bruno Haible for CMUCL)
1153 * a partial workaround for the bug 262: the compiler does not try to
1154 inline-expand a local function doing RETURN-FROM from a deleted
1155 BLOCK. (thanks to Peter Denno for the bug report and to David
1156 Wragg for the simple test case)
1157 * fixed some bugs revealed by Paul Dietz' test suite:
1158 ** RENAME-PACKAGE allows all package designators as new package
1160 ** constraint propagation and lambda variable substitution are
1161 more cautious in dealing with partially deleted code.
1162 ** compiler sometimes lost reoptimization passes.
1163 ** CERROR, given a condition as condition designator, passes its
1164 remaining arguments to the continue format control without
1166 ** Case-altering FORMAT directives work correctly on non-ASCII
1168 ** The REAL type specifier handles bounds outside the floating
1169 point ranges without signalling FLOATING-POINT-OVERFLOW.
1170 ** Functions with IR1-transformations can create intercomponent
1171 references to global functions.
1172 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1174 ** FORMAT ~R treats a nil value for its first parameter correctly.
1176 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1177 * enhancement: saving cores with foreign code loaded is now
1178 supported on x86/NetBSD and sparc/Linux in addition to the previously
1179 supported platforms.
1180 * bug fix: on some platforms repeated installations caused multiple
1181 copies of HTML documentation to be installed -- should not happen
1182 any more. (reported by Stefan Scholl)
1183 * bug fix: parsing self-recursive alien record types multiple times
1184 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1185 original patch by Helmut Eller for CMUCL)
1186 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1187 (thanks to Richard Kreuter)
1188 * bug fix: defining classes whose accessors are methods on existing
1189 generic functions in other (locked) packages no longer signals
1190 bogus package lock violations. (reported by François-René Rideau)
1191 * bug fix: special variables as DEFMETHOD parameters no longer have
1192 associated bogus type declarations. (reported by David Wragg and
1194 * bug fix: read-write consistency on streams of element-type
1195 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1196 * bug fix: redefiniton of the only method of a generic function with
1197 no DEFGENERIC no longer emits a full WARNING. In addition,
1198 redefinition of generic functions with no DEFGENERIC to an
1199 incompatible lambda list now signals an error. (thanks to Zach
1201 * bug fix: DEFGENERIC now works even when there's a function of the
1202 same name in an enclosing lexical environment. (thanks to Zach
1204 * fixed compiler failure, caused by instrumenting code during
1205 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1206 * optimization: added loop analysis and improved register allocation
1207 * fixed some bugs revealed by Paul Dietz' test suite:
1208 ** POSITION on displaced vectors with non-zero displacement
1209 returns the right answer.
1210 ** (SIMPLE-STRING) is a valid type specifier for sequence
1212 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1214 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1215 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1217 ** The justification version of the FORMAT ~< directive treats
1218 non-zero minpad parameter correctly.
1220 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1221 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1222 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1223 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1224 the supported interface.
1225 * new feature: Single-stepping of code compiled with DEBUG 2 or
1226 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1227 * new feature: saving cores with foreign code loaded is now
1228 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1229 Timothy Moore's work for CMUCL)
1230 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1231 parameters to * instead of NIL if no initform is supplied.
1232 (reported by Johan Bockgaard)
1233 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1234 correctly when FUNCALL appears as the car of the form. Note:
1235 despite this FUNCALL forms are not currently subject to
1236 compiler-macro expansion. (port of Raymond Toy's fix for the
1237 same from CMUCL, reported by Johan Bockgaard)
1238 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1239 (thanks for Teemu Kalvas)
1240 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1241 case instead of terminating the iteration (thanks for Julian
1242 Squires, Sean Champ and Raymond Toy)
1243 * bug fix: incorrect expansion of defgeneric that caused a style
1244 warning. (thanks for Zach Beane)
1245 * bug fix: slot accessor effective method computation works properly
1246 for classes with multiple non-standard applicable methods on
1247 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1248 * on x86 compiler supports stack allocation of results of LIST and
1249 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1250 CMUCL implementation by Gerd Moellmann)
1251 * fixed some bugs revealed by Paul Dietz' test suite:
1252 ** FORMAT strings with both the ~<~:;~> form of the justification
1253 directive and pretty-printing directives cause an error.
1255 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1256 * incompatible change: the internal functions
1257 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1258 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1259 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1260 instead of the old functions.
1261 * new feature: on platforms where "dladdr" is available foreign
1262 function names now appear in backtraces. (based on Helmut Eller's
1264 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1265 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1267 * documentation: ASDF manual is now distributed with SBCL.
1268 * bug fix: SBCL can now load its contributed modules with REQUIRE
1269 even if the system-provided entries have been removed from
1270 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1272 * bug fix: backtraces involving undefined functions or assembly
1273 routines are more informative. (thanks to Brian Downing)
1274 * bug fix: mutually referent alien structures now work correctly.
1275 (reported by Rick Taube)
1276 * bug fix: structures defined by WITH-ALIEN can be referred to
1277 within other definitions in the same WITH-ALIEN.
1278 * bug fix: division operators (MOD, TRUNCATE and the like) with
1279 constant zero divisors and integer dividends no longer generate
1281 * bug fix: provide default methods for INPUT-STREAM-P and
1282 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1283 * bug fix: improve the detection and resolution of MOP metacycles
1284 (where effective method computation depends on the generic function
1285 having its effective method computed). (reported by Bruno Haible)
1286 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1287 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1288 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1289 * bug fix: pathnames with relative directory components can be
1290 represented relative to default pathnames.
1291 * optimization: in taking the GCD of bignums, reduce the two bignums
1292 to approximately the same size (using Euclid's algorithm) before
1293 applying the more sophisticated binary GCD. (thanks to Juho
1295 * optimization: COUNT on bitvectors now operates word-at-a-time.
1296 * optimization: ASH with a positive, but not necessarily constant,
1297 (leftwards) shift, when in a modular context, is compiled to a
1299 * fixed some bugs revealed by Paul Dietz' test suite:
1300 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1301 if the corresponding argument is NIL.
1302 ** FORMAT directives accepting a minpad parameter treat negative
1304 ** literal commas as character parameters to FORMAT directives are
1306 ** literal spaces directly after ~<Newline> directives within a
1307 format-logical-block (~:< ~@:>) do not induce :FILL-style
1308 conditional newlines.
1309 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1310 as specified: it no longer includes conditional newlines).
1311 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1313 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1314 :PER-LINE-PREFIX argument does not evaluate to a string.
1316 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1317 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1318 the manual for details; for now, package locks can be disabled by
1319 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1320 if no major problems are found then it is likely that they will be
1321 compiled in unconditionally.
1322 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1323 unsupported operators on all platforms. To load a shared library
1324 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1325 object file, link it into a shared library outside of SBCL and
1326 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1328 * bug workaround: ROOM T and the GC were not working together
1329 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1330 reporting facility aren't preserved. That reporting has been
1331 disabled, so now until and unless someone figures out how to make it
1332 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1333 * minor incompatible change: as threatened around sbcl-0.8.0, the
1334 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1335 The symbols are also exported from SB-PCL for backwards
1336 compatibility, but more so than before SB-PCL should be treated as
1337 an implementation-internal package.
1338 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1340 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1341 It is known as of this release not to work on the Alpha, however.
1342 * fixed bug #167: errors signalled due to illegal syntax in method
1343 bodies are now more legible.
1344 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1345 designators and can hence be used with TYPEP.
1346 * fixed bug #333: CHECK-TYPE now ensures that the type error
1347 signalled, if any, has the right object to be accessed by
1348 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1349 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1350 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1352 * fixed bug #334: programmatic addition of slots using specialized
1353 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1354 and :ALLOCATION :CLASS slots.
1355 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1356 float exponents. (rereported by Peter Seibel)
1357 * fixed a bug: #\Space (and other whitespace characters) are no
1358 longer considered to be macro characters in standard syntax by
1359 GET-MACRO-CHARACTER.
1360 * fixed bug: initialization of condition class metaobjects no longer
1361 causes an instance of the condition to be created. (reported by
1363 * fixed bug: it is now possible to have slots such that
1364 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1365 description is neither :INSTANCE nor :CLASS.
1366 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1367 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1368 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1369 non-standard SLOT-DEFINITION-ALLOCATION values.
1370 * fixed bugs: various race conditions handling exiting threads.
1371 CL-PPCRE's thread torture test now passes.
1372 * fixed arguably-a-bug: GC time proportional to number of threads in
1373 system even when most of them are idle
1374 * optimization: improved performance of BIT and SBIT on bit-vectors.
1375 * .fasl file incompatibility: The fasl file version number has
1376 been incremented because of changes associated with package locks.
1378 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1379 * minor incompatible change: the system no longer provides
1380 optimization hints (conditions which are TYPEP
1381 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1382 mode; these hints are still emitted when higher SPEED optimization
1384 * new contrib module: a sampling profiler (profiling by statistical
1385 sampling, rather than by instrumenting functions) is available as
1386 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1387 * the behaviour of the standard function ED is now customizeable by
1388 third parties through a hook variable: see ED's documentation
1389 string for information on the protocol.
1390 * the compiler no longer emits efficiency notes for (FUNCALL X)
1391 when the type of X is uncertain under default optimization
1393 * fixed bug 276: mutating a binding of a specialized parameter to a
1394 method to something that is not TYPEP the specializer is now
1396 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1397 exhibit the required behaviour on the x86 platform. (thanks to
1398 Peter van Eynde, Eric Marsden and Bruno Haible)
1399 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1400 even for difficult arguments. (reported by Peter Graves)
1401 * fixed bug 141a: the backquote printer now descends quoted
1403 * fixed another bug in backquote printing: no more destructive
1404 modification of the form's list structure. (reported by Brian
1406 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1407 move between its address being taken and the call to
1408 interrupt_thread, fixing a crashing race condition.
1409 * the SB-POSIX contrib implementation has been adjusted so that it
1410 no longer exhibits ridiculously poor performance when constructing
1411 instances corresponding to C structs.
1413 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1414 * minor incompatible change: the sb-grovel contrib now treats C
1415 structures as alien (in the sense of SB-ALIEN) objects rather than
1416 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1417 has implications for memory management of client code
1418 (sb-grovel-returned objects must now be manually managed) and for
1419 type safety (alien objects now have full types).
1420 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1421 used to control emission of compiler diagnostics, rather than the
1422 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1423 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1424 quality should be considered deprecated.
1425 * install.sh now installs the user manual as well
1426 * (not quite a new documentable feature, but worth considering in
1427 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1428 beginnings of a semantically meaningful condition hierarchy is
1429 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1431 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1432 designator as the defaults argument.
1433 * fixed bug: Displaced arrays whose displaced-to array has become
1434 too small now cause ARRAY-DIMENSION to signal an error, providing
1435 for safer bounds-checking. (reported by Bruno Haible)
1436 * fixed bug: DEFCLASS slot definitions with identical :READER and
1437 :WRITER names now signal a reasonable error. (reported by Thomas
1439 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1441 * fixed bug: Invalid slot specification errors now print correctly.
1442 (thanks to Zach Beane)
1443 * fixed bug 320: Shared to local slot value transfers in class
1444 redefinitions now happen corrently from superclasses as
1445 well. (reported by Bruno Haible)
1446 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1448 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1449 improper lists correctly. (reported by Bruno Haible)
1450 * fixed bug 313: source-transform for <fun-name> was erroneously
1451 applied to a call of a value of a variable with name <fun-name>.
1452 (reported by Antonio Menezes Leitao)
1453 * fixed bug 307: The obsolete instance protocol ensures that
1454 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1455 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1456 remove dead unknown-values globs from the middle of the stack.
1457 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1458 easier to resume long computations after using *BREAK-ON-SIGNALS*
1459 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1460 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1461 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1462 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1463 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1464 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1466 * fixed a (fairly theoretical) bug in string printing: if
1467 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1468 does not have array-element-type equal to the most general string
1470 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1471 function name. (thanks to Nikodemus Siivola)
1472 * fixed bug: compile-time format string checker failed on
1473 non-closed ~{. (reported by Thomas F Burdick)
1474 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1475 don't warn on legal loop code involving more than one aggregate
1476 boolean. (thanks to Nikodemus Siivola)
1477 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1478 in keyword position to MAKE-PACKAGE was not being reported as
1480 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1481 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1483 * fixed bugs 280 and 312: the checking for multiple definitions in a
1484 file is less likely to become confused by uses of inline
1486 * fixed bug: the #S reader macro performs the keyword coercion
1487 specified for slot names. (reported by Kalle Niemitalo)
1488 * fixed bug: lambda lists may contain symbols whose names start with
1489 & but are not lambda-list-keywords; their occurrence triggers a
1491 * fixed bug 321: define-method-combination argument lambda lists do
1492 not cause invalid code to be generated when &optional or &aux
1493 variables have default values. (reported by Bruno Haible)
1494 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1495 have CLOS classes; this appears also to have fixed reported
1496 instability in stack exhaustion detection.
1497 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1498 MUFFLE-WARNING when no associated restart is present is now
1500 * optimization: rearranged the expansion of various defining macros
1501 so that each expands into only one top-level form in a
1502 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1504 * optimization: used a previously little-used slot in symbols to
1505 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1507 * fixed some bugs revealed by Paul Dietz' test suite:
1508 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1510 ** Fixed an optimization bug related to inheritance of initforms
1511 from local to shared slots.
1512 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1513 ** CAST optimizer forgot to flush argument derived type.
1514 ** print/read consistency on floats is now orders of magnitude
1515 more likely. (thanks also to Bruno Haible for a similar report
1517 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1518 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1519 for objects of type REAL. Make it so.
1520 ** SXHASH is specified (infelicitously) to respect similarity,
1521 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1522 it so. (thanks to Markus Ziegler)
1523 ** on the Alpha, the compiler succeeds in compiling functions
1524 returning a known number of arguments greater than 63.
1525 ** fixed handling of invalid NIL arguments in keyword position
1527 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1529 ** provided a readably-printable representation for RANDOM-STATE
1531 ** ensured that pathnames, where they have a namestring, always
1532 print using #P"..." syntax.
1534 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1535 * Support for the forthcoming 2.0 version of the NetBSD kernel
1536 running on x86 hardware has been added. (thanks to Perry
1537 E. Metzger most immediately, and others for their past work)
1538 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1539 current release version; SBCL's OpenBSD support had been broken
1540 since about the time of OpenBSD's switch to ELF binary format.)
1541 * [placeholder for DX summary]
1542 ** user code with &REST lists declared dynamic-extent, under high
1543 speed or space and low safety and debug optimization policy.
1544 * The manual has been converted to Texinfo format and the debugger
1545 chapter from the cmucl manual has been added.
1546 * A facility has been added to extract documentation strings from
1547 sbcl and store them as Texinfo-formatted snippets for inclusion in
1548 the manual (via Texinfo's @include directive)
1549 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1550 the test case to Dave Roberts)
1551 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1552 pointers. (reported by Sean Ross)
1553 * bug fix: PROFILE output is printed nicely even for large numerical
1554 values. (thanks to Zach Beane)
1555 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1556 greater than 32 handle EOF correctly.
1557 * bug fix: on X86 an immediate argument of the IMUL instruction is
1558 correctly printed in disassembly. (thanks to Lutz Euler)
1559 * bug fix: class slots in redefined classes preserve their old
1560 values. (thanks to Bruno Haible and Nikodemus Siivola)
1561 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1562 succeeds. (reported by Marco Baringer)
1563 * fixed some bugs revealed by Paul Dietz' test suite:
1564 ** READ-SEQUENCE now works on ECHO-STREAMs.
1565 ** RATIONALIZE works more according to its specification. (thanks
1568 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1569 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1570 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1571 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1572 should matter to you only if you rebind the printer control
1573 variables and then find you want different bindings in the
1574 debugger than in the ordinary execution of your program.)
1575 * The runtime build system has been tweaked to support building
1576 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1577 assembler and linker. (thanks to Nikodemus Siivola)
1578 * Unbound, undefined, undeclared variables now trigger full
1579 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1580 more often programmer error than deliberate exploitation of undefined
1582 * optimization: the hash algorithm for strings has changed to one
1583 that is less vulnerable to spurious collisions. (thanks to Juho
1585 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1586 needless bounds checking. (thanks to Juho Snellman)
1587 * optimization: implemented multiplication as a modular
1588 (UNSIGNED-BYTE 32) operation on the PPC backend.
1589 * fixed some bugs revealed by Paul Dietz' test suite:
1590 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1592 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1593 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1594 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1596 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1598 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1600 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1601 their output stream on EOF from read.
1602 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1603 have been read to end-of-file.
1604 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1606 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1607 description of determination of which consecutive characters
1609 ** Printing the "Space" character with escaping on now yields "#\\ ",
1610 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1611 ** Reading floating-point numbers with *READ-BASE* set to a number
1612 less than 10 works correctly.
1613 ** Reading floating-point numbers with *READ-BASE* set to a number
1614 more than 10 works correctly.
1615 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1616 the readtable currently in effect.
1618 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1619 * minor incompatible change: parsing of namestrings on a physical
1620 (Unix) host has changed; numbers after the final #\. in a
1621 namestring are no longer interpreted as a version field. This is
1622 intented to be largely invisible to the user, except that the
1623 meaning of the namestring "*.*.*" has changed: it now refers to a
1624 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1625 should usually be replaced by
1626 (make-pathname :name :wild :type :wild :version :wild)
1627 with the added benefit that this is more likely to be portable.
1628 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1629 option to OPEN now signals an error if the file being opened
1630 exists; this may have an impact on existing code.
1631 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1632 signals received, on the PowerPC platforms (both Linux and
1633 Darwin). (thanks to Pierre Mai for pointing out the location of
1635 * several fixes on OS X: The system now builds and runs cleanly on
1636 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1637 (thanks to Brian Mastenbrook)
1638 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1639 second-resolution: integer multiples of 1/3600 between -24 and 24.
1640 (thanks to Vincent Arkesteijn)
1641 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1642 type when called with 1 argument; PEEK-CHAR checked type of
1643 PEEK-TYPE only after having read first character from a
1644 stream. (reported by Peter Graves)
1645 * bug fix: the garbage collector now has much better locality
1646 behaviour, and in particular no longer treats all memory as being
1647 exhausted when many small objects point to each other in a deeply
1649 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1650 recognized as being TYPEP their class.
1651 * bug fix: the PUSHNEW documentation string has been corrected.
1652 (thanks to Vincent Arkesteijn)
1653 * bug fix: defaulting of the value for the last of an atypically
1654 large number of multiple values being bound was not being
1655 performed correctly on the Alpha or PPC platforms
1656 * optimization: implemented multiplication as a modular
1657 (UNSIGNED-BYTE 32) operation on the x86 backend.
1658 * optimization: SEARCH on simple-base-strings can now be open-coded.
1659 (see also contrib/compiler-extras.lisp for inspiration for
1660 teaching the compiler about the Boyer-Moore algorithm).
1661 * value, returned by MAX (and MIN) called with several EQUALP, but
1662 not EQL, arguments now does not depend on compiler settings.
1663 * fixed some bugs revealed by Paul Dietz' test suite:
1664 ** in stack analysis liveness information is propagated from
1665 non-local entry points.
1666 ** pathwise CAST removing failed when the CAST node did not start
1668 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1669 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1671 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1672 host is already defined.
1673 ** RENAME-FILE works on streams instead of signalling an internal
1675 ** PEEK-CHAR uses the current readtable when determining whether
1676 or not a character is whitespace.
1677 ** MERGE-PATHNAMES handles the case when the pathname does not
1678 specify a name while the default-pathname specifies a version.
1679 ** Pathnames now stand a better chance of respecting print/read
1681 ** Attempting to use standardized file system operators with a
1682 pathname with invalid :DIRECTORY components signals a
1684 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1686 ** DIRECTORY on logical pathnames is more correct.
1687 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1688 signal a TYPE-ERROR if their argument is not a stream.
1689 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1690 designator argument does not designate a stream.
1691 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1692 examining the synonym.
1693 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1695 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1696 element-type larger than ([UN]SIGNED-BYTE 32).
1698 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1699 * When built with the :SB-FUTEX feature, threaded builds now take
1700 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1701 for faster/more reliable mutex and condition variable support.
1702 * Incompatible change (but one you probably shouldn't have been using
1703 anyway): the interface and code for arbitrating between multiple
1704 threads in the same user session has been redesigned.
1705 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1706 error when called without an explicit environment argument.
1707 (thanks to Nikodemus Siivola)
1708 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1709 confused about their position. (thanks to Adam Warner and Gerd
1711 * bug fix: Pretty printing backquoted forms with unquotations in the
1712 argument list position of various code constructs such as LAMBDA
1713 now works correctly. (reported by Paul Dietz)
1714 * bug fix: Pretty printing unquotations no longer loses all
1715 stream position information.
1716 * optimization: performance of string output streams is now less
1717 poor for multiple small sequence writes.
1718 * optimization: performance of CSUBTYPEP in the presence of complex
1719 expressions involving CONS and NOT many times has been improved.
1720 (reported by Paul Dietz)
1721 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1723 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1724 streams for the REPL, for the debugger, and so on. (thanks to
1726 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1727 * fixed some bugs revealed by Paul Dietz' test suite:
1728 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1729 is ignored if it is too small, rather than propagating through
1730 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1731 ** extremely complex negations of CONS types were not being
1732 sufficiently canonicalized, leading to inconsistencies in
1734 ** VALUES tranformer lost derived type.
1736 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1737 * fixed a bootstrapping bug: the build process no longer assumes
1738 that the various BOOLE-related constants have the same value in
1739 host and target lisps. (noted by Paul Dietz' test suite on an
1740 SBCL binary built from CLISP)
1741 * The system can now be dynamically linked on the MIPS platform,
1742 which enables dynamic loading of foreign code from Lisp. (thanks
1743 to Ralf Baechle for discussions on the MIPS ABI)
1744 * The system now records debugging information for its own source
1745 files in a filesystem-position-independent manner, relative to
1746 the "SYS" logical host.
1747 * fixed a compiler bug: MV-LET convertion did not check references
1748 to the "max args" entry point. (reported by Brian Downing)
1749 * tweaked disassembly notes to be less confident about proclaiming
1750 some instruction as an LRA. (thanks to Brian Downing)
1751 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1752 now each have their own history, command character, and other
1753 characteristics. (thanks to David Lichteblau)
1754 * fixed some bugs revealed by Paul Dietz' test suite:
1755 ** compiler failure in compiling LOGAND expressions including a
1757 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1758 shift greater than 32.
1759 ** FLUSH-DEST did not mark blocks for type check regeneration.
1760 ** HANDLER-CASE failed to accept declarations in handler clauses
1761 in some circumstances.
1763 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1764 * New code in contrib/sb-introspect (still probably not entirely
1765 stable yet) provides some support for smart Lisp development
1766 environments like SLIME.
1767 * The conditions signalled for errors occurring when loading .fasl
1768 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1769 in a way which should help ASDF recover gracefully.
1770 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1771 stuff has been cleaned up. If you code contrib/ stuff, this might
1772 affect you, and you can look at contrib/README, contrib/STANDARDS,
1773 and/or the 0.8.4.27 diff to check.
1774 * In full calls the compiler now does not generate checks for declared
1775 argument types for all arguments.
1776 * various threading fixes
1777 ** and some experimental patches which didn't make it into
1778 the main tree for this release, but which are shipped in
1779 contrib/experimental-thread.patch as a possible fix for some
1780 failures (deadlock, spinning...) in GC-intensive multithreaded
1782 * fixed PPC build problem (source code incompatibility of different
1783 library versions): added offsetof() hackery which attempts to divine
1784 where glibc maintainers put uc_mcontext today
1785 * fixed bug 282: compiler does not trust type assertions while passing
1786 arguments to a full call.
1787 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1788 &OPTIONAL VALUES type parameter.
1789 * fix bug 214: algorithm for noting rejected templates is now more
1790 similar to that of template seletion. (also reported by rydis on
1792 * fixed bug 141b: printing backquoted information readably and prettily
1793 inserts a space where necessary.
1794 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1795 (CHARACTER 10) are now reported as errors, rather than propagated
1796 as unknown types. (reported by piso on #lisp)
1797 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1798 with values NIL and :ERROR. (thanks to Milan Zamazal)
1799 * fixed bug 191c: CLOS now does proper keyword argument checking as
1800 described in CLHS 7.6.5 and 7.6.5.1.
1801 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1802 longer raise an error; further, using a list as a for-as-arithmetic
1803 counter now raises a meaningful error.
1804 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1805 now understood by sequence creation functions such as MAKE-SEQUENCE
1807 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1808 a STRING-INPUT-STREAM.
1809 * compiler enhancement: SIGNUM is now better able to derive the type
1811 * type declarations inside WITH-SLOTS are checked. (reported by
1813 * fixed some bugs revealed by Paul Dietz' test suite:
1814 ** incorrect optimization of TRUNCATE for a positive first
1815 argument and negative second.
1816 ** compiler failure in let-convertion during flushing dead code.
1817 ** compiler failure while deriving type of TRUNCATE on an
1818 interval, containing 0.
1819 ** ASH of a negative bignum by a negative bignum count now returns
1821 ** intersection of CONS types now canonicalizes properly, fixing
1822 inconsistencies in SUBTYPEP.
1824 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1825 * incompatible change: The --disable-debugger command line
1826 option now clobbers the debugger at a more fundamental
1827 level, by redefining #'INVOKE-DEBUGGER instead of by
1828 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1829 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1830 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1831 enter the debugger REPL and then suffer recursive errors
1832 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1833 while under the new system, BREAK in --disable-debugger mode
1834 terminates the system just as an unhandled error would.
1835 * fixed compiler performance when processing loops with a step >1;
1836 * bug fix: DOCUMENTATION now retrieves generic function
1837 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1838 support has been systematized, and now supports the methods
1839 specified by ANSI, along with a default method and a method for
1840 slot documentation. (reported by Nathan Froyd)
1841 * bug fix: effective methods associated with a generic function are
1842 no longer cached over a change of that generic function's method
1843 combination. (reported by Andreas Fuchs)
1844 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1845 names a non-existent directory. (thanks to Andreas Fuchs)
1846 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1847 the PPC platform, lead to stack corruption; this has been fixed.
1848 (reported by Rainer Joswig)
1849 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1850 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1851 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1852 arithmetic in general, is now much more reliable on the PPC
1854 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1855 platform now returns the right answer.
1856 * optimization: restored some effective method precomputation in
1857 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1858 precomputation is now tunable.
1859 * optimization: compiler-internal data structure use has been
1860 reviewed, and changes have been made that should improve the
1861 performance of the compiler by about 20%.
1862 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1863 simple-base-strings and simple-bit-vectors is improved.
1864 * optimization: the optimization of 32-bit logical and arithmetic
1865 functions introduced in version 0.8.3 on the x86 has been
1866 implemented on the mips, ppc and sparc platforms; an
1867 implementation of the same facility, but for 64-bit arithmetic,
1868 has been added for the alpha.
1869 * microoptimization: the compiler is better able to make use of the
1870 x86 LEA instruction for multiplication by constants.
1871 * bug fix: in some situations compiler did not report usage of
1872 generic arithmetic in (SPEED 3) policy.
1873 * bug 145b fix: compiler used wrong type specifier while converting
1874 MEMBER-types to numeric.
1875 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1877 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1878 index argument now works properly on the Alpha platform.
1879 * bug fix: floating point exception treatment on the Alpha platform
1881 * bug fix: FILE-POSITION works much better on string input and
1882 output streams. (thanks to Nikodemus Siivola)
1883 * bug fix: many threading/garbage collection symptoms sorted.
1884 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1885 might be pseudo-atomic.
1886 * internal change: Stopping for GC is now done with signals not
1887 ptrace. GC is now done in whichever thread wanted it, instead of
1889 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1891 * bug fix: result form in DO is not contained in the implicit
1893 * incompatible change: ICR structure is changed; the value part of
1894 CONTINUATION is now called LVAR; corresponding functions are
1895 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1896 * added type deriver for ISQRT (thanks to Robert E. Brown).
1897 * bug fix: better support for loading from the command line when an
1898 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1900 * fixed some bugs revealed by Paul Dietz' test suite:
1901 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1902 ** ROUND and FROUND now give the right answer when given very
1903 small float arguments.
1904 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1906 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1907 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1908 ** LCM should return a non-negative integer.
1909 ** PARSE-INTEGER returned the index of a terminator instead of the
1910 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1911 ** PARSE-INTEGER returned an incorrect index being applied to a
1913 ** LCM with two arguments of 0 returns 0 rather than signalling
1915 ** unsigned addition of a 32-bit constant with the high bit set no
1916 longer causes an internal compiler error on the x86.
1917 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1918 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1919 with negative last argument.
1920 ** byte specifiers with zero size and position no longer cause
1921 an error during type derivation.
1922 ** bignum multiplication on the Alpha platform now returns the
1924 * porting: The system now builds on SuSE AMD64, although it still
1925 generates a 32-bit binary.
1926 * .fasl file incompatibility: The fasl file version number has
1927 been incremented (because of the changes to internal compiler
1928 data structures referred to above).
1930 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1931 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1932 more accurately, on the Darwin kernel running on PowerPC hardware.
1933 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1934 * Compiler code deletion notes now signal a condition of type
1935 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1936 an associated MUFFLE-WARNING restart.
1937 * The compiler now performs limited argument count validation of
1938 constant format strings in FORMAT, and where appropriate in ERROR,
1939 CERROR and WARN. (thanks to Gerd Moellmann)
1940 * New ASDF-INSTALL contrib can be used for automatic download and
1941 installation of third-party Lisp code from CCLAN or other sites
1943 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1944 which forces another thread to execute a function supplied by the
1946 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1947 now accept and act upon their :ELEMENT-TYPE keyword argument.
1948 (reported by Martin Atzmueller, Edi Weitz)
1949 * bug fix: FILE-POSITION now accepts position designators up to
1950 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1951 is the greater. (thanks to Patrik Nordebo)
1952 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1953 Kalle Olavi Niemitalo)
1954 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1955 printable. (reported by Eric Marsden)
1956 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1957 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1958 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1959 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1960 (thanks to Stig Sandoe)
1961 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1962 UNREAD-CHAR now correctly includes the unread character in the
1963 target sequence. (thanks to Gerd Moellmann)
1964 * bug fix in threaded builds: the system can now be suspended and
1965 resumed by shell job control with minimal disruption.
1966 * bug fixes in times and timezones >2038AD
1967 * better handling of "where is GNU make?" problem in build scripts
1968 (thanks to Nikodemus Siivola)
1969 * new optimization: inside a named function any reference to a
1970 function with the same name is considered to be a self-reference;
1971 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1972 optimization quality.
1973 * new optimization on x86: logical functions and + now have
1974 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1975 used when the result is truncated to 32 bits.
1976 * VALUES declaration is partially enabled.
1977 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1978 * fixed some bugs revealed by Paul Dietz' test suite:
1979 ** The system now obeys the constraint imposed by
1980 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1981 types form a lattice under type intersection.
1982 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1983 ** ASSOC now ignores NIL elements in an alist.
1984 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1985 and (1+ MOST-POSITIVE-FIXNUM) answers.
1986 ** The addition of a method with invalid qualifiers to a generic
1987 function does not cause an error to be signalled immediately;
1988 a warning is signalled, and the error is generated only on
1989 calling the generic function.
1990 * changed .fasl file version number, in part to add type codes for
1991 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1992 obscure ANSI requirements
1994 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1995 * fixed bug 148: failure to inline-expand a local function left
1996 garbage, confusing the compiler.
1997 * fixed bugs 3cd: structure slot readers perform type check if the
1998 slot can have an invalid value (i.e. it is either not initialized
1999 or can be written with a less specific slot writer).
2000 * bug fix: the compiler now traps array references to elements off
2001 the end of an array; previously, the bounds checking in some
2002 circumstances could go off-by-one.
2003 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2005 * type declarations for array element types now obey the description
2006 on the CLHS page "Declaration TYPE", as per discussions on
2007 sbcl-help around 2003-05-08. This means that a declaration
2008 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2009 declaration, all references to BAR will be asserted or assumed
2010 (with THE, so dependent on compiler policy) to involve objects of
2011 type FOO. Note that no such declaration is implied in
2012 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2013 * declared types of functions from the "Conditions"
2014 chapter. (reported by Paul Dietz)
2015 * bug fix: CERROR accepts a function as its first argument.
2016 * bug fix: NTH an NTHCDR accept a bignum as index
2017 arguments. (reported by Adam Warner)
2018 * optimization: character compare routines now optimize comparing
2019 against a constant character. (reported by Gilbert Baumann)
2020 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2021 argument now works properly on the MIPS platform.
2022 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2023 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2024 declared to have a functional type, does not cause an error
2026 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2027 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2028 * fixed bug: if last continuation of a deleted block has a
2029 destination, this destination should be deleted too. (reported by
2031 * fixed a bug in the bootstrap process: the host compiler's values
2032 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2033 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2034 test case from Patrik Nordebo)
2035 * improved the ability of the disassembler on the PPC platform to
2036 provide helpful disassembly notes.
2037 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2038 the class in more cases than previously.
2039 * bug fix: FILE-POSITION now understands :START and :END for
2040 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2041 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2042 8) data. (thanks to David Lichteblau)
2043 * bug fix: it is possible to add a method to a generic function
2044 without lambda list.
2045 * bug fix: reader failed to signal END-OF-FILE inside an
2046 object representation. (reported by Nikodemus Siivola)
2047 * fixed some bugs revealed by Paul Dietz' test suite:
2048 ** LAST and [N]BUTLAST should accept a bignum.
2049 ** condition slot accessors are methods.
2050 ** (VECTOR NIL) is a subtype of STRING.
2052 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2053 * minor incompatible change: some nonsensical specialized lambda
2054 lists (used in DEFMETHOD) which were previously ignored now signal
2056 * minor incompatible change: the system is now aware of the types of
2057 variables in the COMMON-LISP package, and will signal errors for
2058 most violations of these type constraints (where previously they
2059 were silently accepted).
2060 * minor incompatible change: COMPILE-FILE now uses the freedom
2061 afforded (ANSI 3.2.2.3) to use derived function types for
2062 functions defined in the same file. This also permits the system
2063 to warn on static type mismatches and function
2064 redefinition. (Currently it does not work with high DEBUG level.)
2065 * minor incompatible change: VALUES declaration is disabled.
2066 * When issuing notes, the compiler now signals a condition of type
2067 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2068 restart for use in user handlers. It is expected that the
2069 COMPILER-NOTE condition will eventually become a condition
2070 supertype to a hierarchy of note types, which will then be
2071 handleable in a similar fashion. However, at the moment, no such
2072 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2073 but it's an implementation detail, not a classification for the
2075 * Changes in type checking closed the following bugs:
2076 ** type checking of unused values (192b, 194d, 203);
2077 ** template selection based on unsafe type assertions (192c, 236);
2078 ** type checking in branches (194bc).
2079 * A short form of VALUES type specifier has ANSI meaning (it has
2080 increased the number of situations when SBCL cannot perform type
2082 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2083 keywords or constants is permissible.
2084 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2085 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2086 classes. (thanks to Antonio Martinez)
2087 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2088 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2089 argument to a pretty-print stream. Instead, it leaves any such
2090 operations to DESCRIBE-OBJECT methods.
2091 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2093 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2094 lambda lists. (thanks to David Lichteblau)
2095 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2096 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2097 (thanks to Gerd Moellmann)
2098 * fixed bug 246: increased compilation speed of long
2099 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2101 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2103 * DEFCONSTANT now throws a condition of type
2104 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2105 constant to a non-EQL value; CONTINUE and ABORT restarts
2106 respectively change and preserve the value.
2107 * fixed bug 63: The code walker, part of the implementation of CLOS,
2108 is now better at handling symbol macros.
2109 * bug fix: There is no longer an internal implementation type named
2110 CL:LENGTH. (reported by Raymond Toy)
2111 * bug fix: In macro-like defining macros/special operators the
2112 implicit block does not enclose the lambda list.
2113 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2114 enclosed in parentheses) are not suitable as type specifiers, and
2115 their use properly signals an error now.
2116 * bug fix: An argument count mismatch for a type specifier in code
2117 being compiled no longer causes an unhandled error at compile
2118 time, but signals a compile-time warning.
2119 * fixed simple vector readable printing
2120 * bug fix: DESCRIBE takes more care over whether the class
2121 precedence list slot of a class is bound before accessing it.
2122 (reported by Markus Krummenacker)
2123 * bug fix: FORMATTER can successfully compile pretty-printer format
2124 strings which use variants of the ~* directive inside.
2125 * bug fix: SEARCH now applies its TEST predicate to the elements of
2126 the arguments in the correct order. (thanks to Wolfhard Buss)
2127 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2128 in type inference. (thanks to Robert E. Brown)
2129 * bug fix: Reading in symbols with an explicit package name of ""
2130 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2131 * fixed some bugs revealed by Paul Dietz' test suite:
2132 ** NIL is now allowed as a structure slot name.
2133 ** Arbitrary numbers, not just REALs, are allowed in certain
2134 circumstances in LOOP for-as-arithmetic clauses.
2135 ** Multiple class redefinitions before slot access no longer
2136 causes a type error.
2137 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2138 association between the name and a class.
2139 ** Generic functions with non-standard method-combination and over
2140 five methods all of which return constants no longer return NIL
2141 after the first few invocations. (thanks to Gerd Moellmann)
2142 ** CALL-NEXT-METHOD with no arguments now passes the original
2143 values of the arguments, even in the presence of assignment.
2144 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2146 ** DISASSEMBLE works with closures and funcallable instances.
2147 ** ADD-METHOD now returns the generic function, not the new method.
2148 ** FIND-METHOD signals an error if the lengths of the specializers
2149 is incompatible with the generic function, even if the ERRORP
2151 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2152 which its argument is a member.
2153 ** DEFCLASS only redefines the class named by its class-name
2154 argument if that name is the proper name of the class;
2155 otherwise, it creates a new class.
2156 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2157 of the UNBOUND-SLOT condition to the name of the slot.
2158 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2159 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2160 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2161 SLOT-MAKUNBOUND in the specified fashion.
2163 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2164 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2165 cross-compilation host. As a consequence, we can now bootstrap our
2166 way up to SBCL starting with a bare gcc toolchain and human-readable
2167 source code (first the source to CLISP, then the source to SBCL).
2168 * A contributed module containing a partial implementation of the
2169 simple-streams interface has been included. (thanks to Rudi
2171 * A contributed module implementing the RFC1321 Message Digest
2172 Algorithm, known as MD5, has been included.
2173 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2174 no longer has any effect, as the code controlled by this feature
2175 has been deleted. (As far as we know, no-one has ever built using
2176 this feature, and its semantics were confused in any case).
2177 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2178 work on conditions (as required by the ANSI specification),
2179 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2180 expected behaviour on conditions. Users should note, however,
2181 that such behaviour is not required by the ANSI specification,
2182 and so use of this behaviour may render their code unportable.
2183 * fixed some bugs revealed by Paul Dietz' test suite:
2184 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2186 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2187 ** SXHASH on condition objects no longer returns NIL.
2188 ** :ALLOCATION :CLASS slots are better treated; their values are
2189 updated on class redefinition, and initforms inherited from
2190 superclasses are applied.
2191 ** REMOVE-METHOD returns its generic function argument even when
2192 no method was removed.
2193 ** SHARED-INITIALIZE now initializes the values of the requested
2194 slots, including those with :ALLOCATION :CLASS.
2195 ** ALLOCATE-INSTANCE now works on structure classes defined via
2196 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2198 ** SLOT-EXISTS-P now works on conditions, as well as structures
2200 ** MAKE-LOAD-FORM now has the required methods on
2201 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2202 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2203 keyword, and now implements the SLOT-NAMES argument.
2204 ** methods with &OPTIONAL arguments no longer allow too many
2205 arguments to be passed in the call without error.
2206 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2207 option is consistent with the required arguments of the generic
2208 function lambda list.
2209 * bug fix: REQUIRE accepts a string designator. (Thanks to
2211 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2212 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2213 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2214 * bug fix: The compiler now checks for duplicated variables in macro
2216 * bug fix: SETQ on globals returns the correct value.
2217 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2218 not a COMPILER-ERROR (followed by some other strange error on
2219 choosing the CONTINUE restart).
2220 * bug fix: make.sh and friends are now more consistent in the way that
2221 they look for GNU "make".
2223 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2224 * experimental native threads support (on x86 Linux >=2.4 only).
2225 This is not compiled in by default: you need to add :SB-THREAD to
2226 the target features. See the "Beyond ANSI" chapter of the manual
2228 * fix for longstanding nonANSIism: The old distinction between
2229 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2230 The return value from CL:FIND-CLASS is now a CLOS class, and
2231 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2232 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2233 * An interface to the MetaObject Protocol, as described in Kiczales,
2234 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2235 MIT Press, 1991, is available from the SB-MOP package.
2236 * incompatible change: the SB-PCL package should now be considered
2237 a private implementation detail, and no longer a semi-private MOP
2239 * minor incompatible change: due to rearrangement for threads, the
2240 control stack and binding stack are now allocated at arbitrary
2241 addresses instead of being hardcoded per-port. Users affected by
2242 this probably have to be doing advanced things with shared
2243 libraries, and will know who they are.
2244 * minor incompatible change: Previously, all --eval forms used were
2245 processed with READ before any of them were processed with EVAL.
2246 Now each --eval form is processed with both READ and EVAL before
2247 the next --eval form is processed. (Thus package operations like
2248 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2249 work as the user might reasonably expect.)
2250 * minor incompatible change: *STANDARD-INPUT* is now only an
2251 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2253 * minor incompatible change: Y-OR-N-P is now character-oriented,
2254 not line oriented. Also, YES-OR-NO-P now works without errors.
2255 (thanks to Antonio Martinez)
2256 * sb-aclrepl module improvements: an integrated inspector, added
2257 repl features, and a bug fix to :trace command.
2258 * Known functions, which cannot be open coded by the backend, are
2259 considered to be able to check types of their arguments. (fixing
2260 a bug report by Nathan J. Froyd)
2261 * fixed a bug in computing method discriminating functions: It is
2262 now possible to define methods specialized on classes which have
2263 forward-referenced superclasses. (thanks to Gerd Moellmann)
2264 * fixed evaluation order in optional entries (reported by Gilbert
2266 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2267 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2268 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2269 required-by-AMOP NAME argument, as well as CLASS and
2270 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2271 * fixed bug 20: DEFMETHOD can define methods using names that are
2272 not the proper names of classes to designate class specializers.
2273 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2274 Unix file descriptors, instead of blowing up. (thanks to Antonio
2276 * Garbage collection refactoring: user-visible change is that a
2277 call to the GC function during WITHOUT-GCING will not do garbage
2278 collection until the end of the WITHOUT-GCING. If you were doing
2279 this you were probably losing anyway.
2280 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2281 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2282 TYPEP the latter but not the former.
2283 * The compiler issues a full WARNING for calls to undefined functions
2284 with names from the CL package.
2285 * MAP-INTO for a vector destination is open coded. (reported by
2286 Brian Downing on c.l.l)
2287 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2288 documentation string.
2289 * fixed some bugs revealed by Paul Dietz' test suite:
2290 ** COPY-ALIST now signals an error if its argument is a dotted
2292 ** Condition slots are now accessed more correctly in the presence
2293 of multiple initargs for a given slot.
2294 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2295 exclude restarts of the same name associated with a different
2297 ** DEFCLASS of forward-referenced classes with another
2298 forward-referenced class in the superclasses list no longer
2300 ** Condition slots are now initialized once each, not multiple
2301 times. (thanks to Gerd Moellmann)
2302 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2304 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2305 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2306 arguments contain duplicated elements.
2307 ** RESTART-CASE understands local macros.
2308 ** RESTART-CASE associates exactly its own restarts with a condition.
2309 ** ENDP in safe mode checks its argument to be of type LIST.
2310 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2311 in question is unbound.
2312 ** Optimized MAKE-INSTANCE functions no longer cause internal
2313 assertion failures in the presence of duplicate initargs.
2314 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2315 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2316 propagated even in the ctor optimized implementation of
2318 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2320 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2321 * a better implementation of SXHASH on (simple) bit vectors,
2322 measured both in execution speed and in distribution of results
2323 over the positive fixnums, has been installed. Likewise, a better
2324 implementation of EQUAL for simple bit vectors is now available.
2325 * fixed CEILING optimization for a divisor of form 2^k.
2326 * fixed bug 240 (emitting extra style warnings "using the lexical
2327 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2328 by Antonio Martinez)
2329 * fixed SXHASH, giving different results for NIL depending on type
2330 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2331 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2332 variable. (found by Rolf Wester)
2333 * SBCL does not ignore type declarations for special
2334 variables. (reported by rif on c.l.l 2003-03-05)
2335 * some bug fixes in contrib/sb-aclrepl/
2336 * fixed some bugs revealed by Paul Dietz' test suite:
2337 ** a bug in the CONS type specifier, whereby the CAR and CDR
2338 types got intertwined, has been fixed;
2339 ** the type system is now able to reason about the interaction
2340 between INTEGER and RATIO types more completely;
2341 ** APPEND, [N]REVERSE and NRECONC check that those their
2342 arguments, which must be proper lists, are really so;
2343 ** An array specialized to be unable to hold elements has been
2344 implemented, as required -- yes, really -- by ANSI;
2345 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2346 on malformed property lists;
2348 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2349 * incompatible packaging change: in line with Unix convention,
2350 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2351 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2352 * REQUIRE and PROVIDE are now optionally capable of doing something
2353 useful. See the documentation string for REQUIRE.
2354 * infrastructure for a managed SBCL contrib system: contributed
2355 modules in this release include:
2356 ** the ASDF system definition facility;
2357 ** an interface to the BSD Sockets API;
2358 ** an ACL-like convenience interface to the repl;
2359 (thanks to Kevin Rosenberg)
2360 ** an implementation of ROTATE-BYTE, with efficient implementation
2362 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2363 gives a closer approximation to the right answer than previously.
2364 (thanks to Raymond Toy)
2365 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2366 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2367 optional environment arguments, as required by ANSI.
2368 * fixed bugs in other functions taking environment objects, allowing
2369 calls with an explicit NIL environment argument to be compiled
2371 * fixed bug 228: primary return values from
2372 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2373 COMPILE or FUNCTION.
2374 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2375 :TYPE will no longer signal errors on innocuous objects.
2376 * fixed bug 231b: SETQ is better at respecting type declarations in
2377 the lexical environment.
2378 * fixed a bug in DEFCLASS: classes named by symbols with no or
2379 unprintable packages can now be defined.
2380 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2381 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2382 * fixed compiler failure related to checking types of functions.
2383 (reported by Robert E. Brown)
2384 * the compiler is now much more consistent in its error-checking
2385 treatment of bounding index arguments to sequence functions: in
2386 (SAFETY 3) code, errors will be signalled in almost all cases if
2387 invalid sequence bounding indices are passed to functions defined
2388 by ANSI to operate on sequences.
2389 * fixed a bug in the build procedure: documentation of SBCL-specific
2390 packages is now preserved and available in the final Lisp image.
2391 * lifted FDEFINITION lookup out of loops in the implementation of
2392 many list operations. (thanks to Robert E. Brown)
2393 * fixed a bug in the reader: the #n# reader macro now works for
2394 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2395 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2396 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2397 E. Brown and Tony Martinez respectively)
2398 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2399 SLOT-BOUNDP: in particular, it is now able to optimize them much
2400 better, and is now not vulnerable to having packages renamed.
2401 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2402 always called when a slot is not present in an instance. (thanks
2404 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2405 longer signal an error on unreading a character following EOF on
2406 the previous constituent stream. (thanks to Tony Martinez)
2407 * fixed some bugs revealed by Paul Dietz' test suite:
2408 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2409 not just nonnegative fixnums;
2410 ** the logical bit-array operators such as BIT-AND now accept an
2411 explicit NIL for their "opt-arg" argument (to indicate a
2412 freshly-consed result bit-array);
2413 ** ELT now signals an error on an invalid sequence index in safe
2415 ** the type system is now cleverer about negations of numeric
2416 types, and consequently understands the BIGNUM and RATIO types
2418 ** the type system is now cleverer about the interaction between
2419 INTEGER and RATIO types: while bugs still remain, many more
2420 cases are accurately computed;
2421 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2422 if it is in the last clause;
2423 ** CONSTANTLY now correctly returns a side-effect-free function in
2425 ** DECLARE is no longer treated as a special-operator; in
2426 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2427 * incremented fasl file version number due to the change in the
2428 DEFSTRUCT-SLOT-DESCRIPTION structure.
2430 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2431 * minor incompatible change: code processed by the "interpreter" or
2432 EVAL now has a compilation optimization policy of (DEBUG 2)
2433 (changed from (DEBUG 1)) to improve debuggability of interactive
2434 development, and to allow the use of the debug RETURN command in
2436 * an experimental implementation of the RETURN command for the
2437 debugger has been included. (thanks to Frederik Kuivinen)
2438 * fixed bug 62: constraints were not propagated into a loop.
2439 * fixed bug in embedded calls of SORT (reported and investigated by
2441 * fixed some bugs revealed by Paul Dietz' test suite:
2442 ** printing and reading of arrays with some dimensions having
2443 length 0 (thanks to Gerd Moellmann);
2444 ** BOA constructor with &AUX argument without a default value does
2445 not cause a type error;
2446 ** CONSTANTP now returns true for all self-evaluating objects.
2448 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2449 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2450 accessors that are related by inheritance, as specified in the
2451 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2452 Valtteri Vuorikoski)
2453 * The compiler is now able to inline functions that were defined in
2454 a complex lexical environment (e.g. inside a MACROLET).
2455 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2457 * Support for the upcoming FreeBSD-5.0 release has been included.
2458 (thanks to Dag-Erling Smorgrav)
2459 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2460 effect when it is not in a toplevel context.
2461 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2462 stand a better chance of being correct. (thanks to Gerd
2464 * fixed bug in COERCE, which now signals an error on coercing a
2465 rational to a bounded real type which excludes the expected
2467 * The compiler is now able to derive types more accurately from the
2468 COERCE and COMPILE functions.
2469 * fixed bug 223: functional binding is considered to be constant
2470 only for symbols in the CL package.
2471 * fixed bug 231: SETQ did not check the type of a variable being set
2472 (reported by Robert E. Brown)
2473 * A new optimization for MAKE-INSTANCE has been included, fixing
2474 various bugs (including relating to :ALLOCATION :CLASS slots and
2475 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2477 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2478 ** As required by ANSI, LOOP now disallows anonymous collection
2479 clauses such as COLLECT I in conjunction with aggregate boolean
2480 clauses such as THEREIS (= I 1);
2481 ** LOOP now signals an error when any variable is reused in the
2482 same loop (including the potentially useful construct analogous
2483 to WITH A = 1 WITH A = (1+ A);
2484 ** IT is only a special loop symbol within the first clause of a
2485 conditional loop clause;
2486 ** LOOP with a typed iteration variable over a hashtable now
2487 signals a type error iff it should.
2488 * fixed some other bugs revealed by Paul Dietz' test suite:
2489 ** FILE-STREAM now names the class previously known as FD-STREAM;
2490 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2491 argument) no longer signals an error;
2492 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2493 of the slot symbol, rather than using the current package
2494 ((:CONC-NAME "") continues to intern the slot's name in the
2496 * incremented fasl file version number, because of the incompatible
2497 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2498 of the new implementation of DEFINE-COMPILER-MACRO.
2500 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2501 * Support for building SBCL for MIPS platforms running in
2502 little-endian mode has now been checked in, and basic
2503 functionality on said platforms verified.
2504 * minor incompatible change: PCL now records the pathname of a file
2505 in which methods and the like are defined, rather than its
2507 * minor incompatible change: TRUENAME now considers the truename of
2508 a file naming a directory to be the pathname with :DIRECTORY
2509 component indicating that directory.
2510 * minor incompatible change: a NAMED clause in the extended form of
2511 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2512 reason for the previous behaviour is unclear.
2513 * more systematization and improvement of CLOS and MOP conformance
2514 in PCL (thanks to Gerd Moellman and Pierre Mai):
2515 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2517 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2518 primary methods with no specializers;
2519 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2521 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2522 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2523 FORWARD-REFERENCED-CLASSes; error reporting on
2524 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2526 ** SXHASH on CLOS instances now uses a slot internal to the
2527 instance to return different numbers on distinct instances,
2528 while preserving the same return value through invocations of
2530 ** DEFMETHOD signals errors when methods with longer incongruent
2531 lambda lists are added to generic functions;
2532 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2533 CLASS, as specified in AMOP;
2534 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2535 on the order returned by the primary method for classes of
2536 class STANDARD-CLASS;
2537 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2538 * fixed some bugs shown by Paul Dietz' test suite:
2539 ** DOLIST puts its body in TAGBODY;
2540 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2542 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2543 value producing form;
2544 ** if more variables are given to PROGV than values, extra
2545 variables are bound and made to have no value;
2546 ** NSUBSTITUTE on list arguments gets the right answer with
2548 ** ELT signals an error of type TYPE-ERROR when the index argument
2549 is not a valid sequence index;
2550 ** LOOP signals (at macroexpansion time) an error of type
2551 PROGRAM-ERROR when duplicate variable names are found;
2552 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2553 ** FUNCALL of special-operators now cause an error of type
2555 ** PSETQ now works as required in the presence of side-effecting
2556 symbol-macro places;
2557 ** NCONC accepts any object as its last argument;
2558 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2560 ** loop-for-as-package does not require a package to be explicitely
2562 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2564 * fixed bug 166: compiler preserves "there is a way to go"
2565 invariant when deleting code.
2566 * fixed bug 172: macro lambda lists with required arguments after
2567 &REST arguments now cause an error to be signalled. (thanks to
2569 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2570 bug. (thanks to Matthew Danish)
2571 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2573 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2574 arguments are lexically rebound. (thanks to Gerd Moellmann and
2576 * fixed bug 194: error messages are now more informative when there
2577 is no primary method applicable in a call to a generic
2578 function. (thanks to Gerd Moellmann)
2579 * fixed bug in command line argument checking (thanks to Julian
2581 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2582 (thanks to Matthew Danish)
2583 * incremented fasl file version number, because of the
2584 SXHASH-related changes in the layout of CLOS data structures
2586 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2587 * minor incompatible change: The runtime (the Unix executable named
2588 "sbcl") is now much pickier about the .core files it will load.
2589 Essentially it now requires .core files to descend from the same
2590 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2591 as the runtime does. (The intent is to prevent the crashes which
2592 can occur, and which can even be reported as mysterious failures,
2593 when people patch the sources or change the build parameters
2594 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2595 sbcl and .core files.)
2596 * fixed bug: VALUES-LIST is no longer optimized away.
2597 * fixed bug 142: The FFI conversion of C string values to Lisp
2598 string values no longer conses excessively. (thanks to Nathan
2599 Froyd porting Raymond Toy's fix to CMU CL)
2600 * began to systematize and improve MOP conformance in PCL (thanks to
2601 Nathan Froyd, Gerd Moellman and Pierre Mai):
2602 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2604 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2605 ** FINALIZE-INHERITANCE is now called on class finalization;
2606 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2607 argument precedence order.
2608 * fixed bug 202: The compiler no longer fails on functions whose
2609 derived types contradict their declared type.
2610 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2611 so it can be non-toplevel.
2612 * The fasl file version number has changed (because of the new
2613 implementation of DEFMACRO).
2614 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2615 safe code, that any length requirement by their type-specifier
2616 argument is valid. The exceptions to this are described in bug
2618 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2619 functions now check the types of their inputs as required by ANSI.
2620 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2621 introduced symbol is DECLAREd to be SPECIAL.
2622 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2623 * fixed bug: :COUNT argument to sequence functions may be negative
2624 * fixed bug: body of DO-SYMBOLS may contain declarations
2625 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2626 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2627 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2628 symbol macro only once
2629 * fixed printing of call frame when argument list is unavailable
2630 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2631 * compiler no longer signals WARNING on unknown keyword
2634 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2635 * A beta-quality port to the mips architecture running Linux,
2636 based on the old CMUCL backend, has been made. It has been tested
2637 on a big-endian kernel, and works sufficiently well to be able to
2638 rebuild itself; it has not been tested in little-endian mode.
2639 * fixed an inconsistency between gencgc.c and purify.c which made
2640 dumping/loading .core files unreliable
2641 * fixed bug 120a: The compiler now deals correctly with IFs where
2642 the consequent is the same as the alternative, instead of
2643 misderiving the return type. (thanks to Alexey Dejneka)
2644 * fixed bug 113: Logical pathnames are now dumpable (the logical
2645 host is resolved at load-time, throwing an error if it is not
2647 * fixed bug 174: FORMAT's error message is slightly clearer when a
2648 non-printing character is used in a format directive.
2649 * fixed several bugs in compiler checking of type declarations, i.e.
2650 violations of the Python "declarations are assertions" principle
2651 (thanks to Alexey Dejneka)
2652 * fixed several bugs in PCL's error checking (thanks to Gerd
2654 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2656 * fixed bug in compilation of functions as first class values
2657 (thanks to Antonio Martinez-Shotton)
2658 * The compiler's handling TYPE-ERRORs which it can prove will
2659 inevitably happen at runtime has been cleaned up and corrected
2660 in several ways. (thanks to Alexey Dejneka)
2661 * improved argument type checking for various basic arithmetic
2662 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2663 lavished on them in the past that they can be compiled in many
2664 ways in different special cases
2665 * fixed bug 181: compiler checks validity of user supplied type
2667 * cleaned up code flushing in optimization: Function calls which
2668 should signal errors for safety purposes (e.g. which ANSI says
2669 should signal errors when their arguments are of incorrect type)
2670 are no longer optimized away.
2671 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2672 * incremented fasl file version number, because changes in the
2673 implementation of sequence functions like COERCE caused
2674 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2675 in old inline expansions) to become undefined. (Actually these
2676 changes were later undone, so we might very well be binary
2677 compatible with 0.7.7 after all, but leaving the version number
2678 incremented seemed like the simplest and most conservative
2681 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2682 * An alpha-quality port to the parisc architecture running Linux,
2683 based on the old CMUCL backend, has been made. This, even more so
2684 than the other backends, should be considered still a work in
2685 progress; known problems include that the Linux kernel in 64-bit
2686 mode does not propagate the correct sigcontext structure to
2687 userspace, and consequently SBCL on a parisc64 kernel will not
2689 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2690 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2691 suppressed.) Also now that the compiler is looking at declarations
2692 in the environment, it checks optimization declarations as well,
2693 and suppresses inlining when (> DEBUG SPEED).
2694 * More fixes have been made to treatment of floating point exception
2695 treatment and other Unix signals. In particular, floating point
2696 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2697 * The detection and handling of control stack exhaustion (infinite
2698 or very deeply nested recursion) has changed. Stack exhaustion
2699 detection is now done by write-protecting pages at the OS level
2700 and applies at all optimization settings; when found, a
2701 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2702 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2703 be caught using IGNORE-ERRORS.
2704 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2705 correctly when transforming recursive LABELS functions to LETs.
2706 (thanks to Alexey Dejneka)
2707 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2708 that are names of constants or global variables.
2709 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2710 alien routines with docstrings.
2711 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2712 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2714 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2715 (thanks to Eric Marsden)
2716 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2717 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2718 * Bug fix: The SPARC backend can now compile functions involving
2719 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2720 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2721 to a functions expecting a PATHNAME-DESIGNATOR.
2722 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2723 lambda lists. (thanks to Alexey Dejneka)
2724 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2725 functions so that EXPORTing the name of the class doesn't cause
2726 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2727 to Antonio Martinez for reporting this)
2728 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2729 constant-folded without failing an assertion. (thanks to Einar
2730 Floystad Dorum for reporting this)
2731 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2732 types are now dealt with more correctly by the compiler.
2733 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2734 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2735 behaviour analogous to RENAME-FILE. This puts its behaviour more
2736 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2738 * The fasl file version number has changed again. (because of the
2739 bug fix involving the names of PCL MAKE-INSTANCE functions)
2741 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2742 * bug fix: Floating point exceptions are treated much more
2743 consistently on the x86/Linux and PPC/Linux platforms.
2744 * Array initialization with :INITIAL-ELEMENT is now much faster for
2745 cases when the compiler cannot open code the array creation, but
2746 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2747 array accesses have also seen a speed increase.
2748 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2749 specified. (This was at the root of some bad interactions between
2750 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2752 * bug fix: Internal error arguments for undefined functions are now
2753 computed correctly on the PPC/Linux platform.
2754 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2755 Raymond Toy's patch for CMU CL)
2756 * Support for the Solaris 9 operating environment has been included
2757 (thanks to Daniel Merritt)
2758 * A very ugly but hopefully complete draft of the missing FFI chapter
2759 of the manual has been created by reformatting the corresponding
2760 CMU CL manual chapter into (currently very ugly and incoherent)
2761 DocBook and bringing it up to date for SBCL behavior. Thus, the
2762 manual is now essentially complete, at least by my extreme
2763 once-and-only-once standards, whereby it's acceptable to refer to
2764 the doc strings of SB-EXT functions as the primary documentation.
2765 * The fasl file version number has changed again, due to cleanup of
2766 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2767 is no longer a static symbol.)
2769 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2770 * SBCL now builds with OpenMCL (version 0.12) as the
2771 cross-compilation host; also, more progress has been made toward
2772 bootstrapping under CLISP.
2773 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2775 * bug 158 fixed: The compiler can now deal with integer loop
2776 increments different from 1; fixing this turned out also to fix
2778 * bug 169 fixed: no more bogus warnings about using lexical bindings
2779 despite the presence of perfectly good SPECIAL declarations (thanks
2780 to David Lichteblau)
2781 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2782 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2783 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2785 * bug 180 fixed: Method combination specifications no longer ignore
2786 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2787 * bug fix: Structure type predicate functions now check their argument
2788 count as they should.
2789 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2790 correctly. (thanks to Pierre Mai)
2791 * minor incompatible change: The --noprogrammer option is deprecated
2792 in favor of the new --disable-debugger option, which is very similar.
2793 (The major difference is that it takes effect at a slightly different
2794 time at startup, causing handling of errors in --sysinit and
2795 --userinit files will be affected differently.) The
2796 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2797 been added to allow this functionality to be controlled from ordinary
2798 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2799 maintainers, who might want to run non-interactive scripts to
2800 build SBCL cores which will later be used interactively.)
2801 * minor incompatible change: The LOAD function no longer, when given
2802 a wild pathname to load, loads all files matching that pathname.
2803 Instead, an error of type FILE-ERROR is signalled.
2805 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2806 * bug 147 fixed: The compiler preserves its block link/count
2807 invariants more correctly now so that it doesn't crash. (thanks
2809 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2811 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2812 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2813 no-value-for-this-character as NIL (as specified by ANSI).
2814 * HOST-NAMESTRING on physical pathnames now returns a string that is
2815 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2816 (thanks to Christophe Rhodes)
2817 * The Alpha port handles icache flushing more correctly. (thanks to
2819 * More progress has been made toward bootstrapping under CLISP. (thanks
2820 to Christophe Rhodes)
2821 * The fasl file format has changed again, because dynamic loading
2822 on OpenBSD (which has non-ELF object files) motivated some cleanups
2823 in the way that foreign symbols are transformed and passed around.
2824 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2825 is no longer treated as whitespace by the reader, but instead as
2826 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2827 |A
\7fB|, instead of A as it used to.
2829 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2830 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2831 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2832 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2833 this as of 0.7.1.45, but was left out of the previous news section
2834 (thanks to Dan Barlow)
2835 * SBCL now runs on the Solaris operating system on SPARC architectures
2836 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2837 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2838 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2839 * SPARC backend cleanups, allowing builds of cores optimized for V8
2840 and V9 SPARCS, and also emission of code targeted to a particular
2841 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2843 * SBCL is closer to bootstrapping under CLISP, thanks to various
2844 fixes by Christophe Rhodes.
2845 * The fasl file format has changed again, to allow the compiler's
2846 INFO database to support symbol macros.
2847 * The user manual (in doc/) is formatted into HTML more nicely.
2848 (thanks to coreythomas)
2849 * The system is smarter about SUBTYPEP relationships, especially
2850 those involving NOT types (including types such as ATOM which are
2851 represented internally using NOT types). Thus SUBTYPEP is less
2852 likely to return (VALUES NIL NIL) in general, and in particular
2853 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2855 * The fasl file format has changed again, because the internal
2856 representation of types now includes a new slot to support the new
2857 SUBTYPEP-of-NOT-types logic.
2858 * (not a change in the main branch of SBCL, but a related prototype
2859 which can hopefully be merged into the main branch of SBCL in the
2860 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2861 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2862 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2863 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2864 dispatch macro character combinations. (thanks to Alexey Dejneka)
2865 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2866 that superficially look like logical namestrings correctly.
2867 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2869 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2870 default supplied-p) for &optional and &key arguments. (thanks to
2873 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2874 * incompatible change: The compiler is now less aggressive about
2875 tail call optimization, doing it only when (> SPACE DEBUG) or
2876 (> SPEED DEBUG). (This is an incompatible change because there are
2877 programs which relied on the old CMU-CL-style behavior to optimize
2878 away their unbounded recursion which will now die of stack overflow.)
2879 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2880 for non-GENCGC systems has been increased to 20M (since that
2881 seems much closer to the likely performance optimum for modern
2882 systems than the old 4M value was)
2883 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2884 and *DEBUG-PRINT-LEVEL*
2885 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2886 of CMU CL's support for SPARC, and various endianness and other
2887 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2888 * new syntactic sugar for the Unix command line: --load foo.bar is now
2889 an alternate notation for --eval '(load "foo.bar")'.
2891 ** The system now detects stack overflow and handles it gracefully,
2892 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2893 optimization settings. (This is a good thing in general, and
2894 its introduction in this version should be particularly timely
2895 for anyone whose code fails because of suppression of tail
2897 ** The system now hunts for the C variable "environ" in a more
2898 devious way, to avoid segfaults when the C library version differs
2899 between compile time and run time. (thanks to Christophe Rhodes)
2900 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2901 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2902 ** The compiler no longer issues bogus style warnings for undefined
2903 classes in the same source file as the DEFCLASSes which defined
2904 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2906 ** fixes in CONDITION class precedence list for undefined function
2907 errors (thanks to Alexei Dejneka)
2908 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2909 correctly. (thanks to Dan Barlow)
2910 ** portability fixes aiming at bootstrapping under CLISP (thanks
2911 to Dave McDonald and Christophe Rhodes)
2912 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2913 ** fixes in type translation and and type inference (thanks to
2915 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2916 ** various fixes in the new ports (thanks to Dan Barlow)
2917 * several changes related to debugging:
2918 ** suppression of tail recursion, as noted above
2919 ** stack overflow detection, as noted above
2920 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2921 is now the default. (For some time encapsulation has been more
2922 reliable than the breakpoint-based :ENCAPSULATE NIL
2923 implementation, at least on X86 systems; and I just noticed that
2924 encapsulation also seems closer to the spirit of the ANSI
2927 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2929 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2930 up properly again. (There was a packaging bug in 0.7.0 which
2931 left their definitions in SB-SYS::LOAD-FOREIGN and
2932 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2933 vital for most things which interface to C-level interfaces,
2934 like extensions working with sockets or databases or
2935 Perl-compatible regexes or whatever, and the need to fix
2936 this bug is the main reason that 0.7.1 was released so
2938 ** DEFGENERIC is now choosier about the methods it redefines, so that
2939 reLOADing a previously-LOADed file containing DEFGENERICs does
2940 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2941 cycle now works as it should. (thanks to Alexey Dejneka)
2942 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2943 fixed by Christophe Rhodes. (He actually submitted this patch
2944 months ago, and I delayed until after 0.7.0.)
2945 ** Bug 111 (internal compiler confusion about runtime checks on
2946 FUNCTION types) was fixed by Alexey Dejneka.
2947 * Some internal cleanups (getting rid of variables which aren't
2948 needed now that the byte interpreter is gone) caused the fasl
2949 file format number to change again.
2951 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2952 * major incompatible change: The default fasl file extension, i.e. the
2953 default extension for files produced by COMPILE-FILE, has changed
2954 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2956 ** There are many changes in the implementation of the compiler.
2957 SBCL is now essentially a compiler-only implementation of ANSI
2958 Common Lisp. EVAL still "interprets" a few special cases, but
2959 almost all the interesting cases are handled by creating
2960 a LAMBDA expression, calling COMPILE on it, then calling
2961 FUNCALL on the result.
2962 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2963 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2964 Since the code is newer, there might still be some new bugs
2965 (though not as many as before Martin Atzmueller's fixes:-). But
2966 the new code is substantially simpler and clearer, and hopefully
2967 any remaining bugs will be simpler, less fundamental, and more
2968 fixable then the bugs in the old code.
2969 ** The revised compiler is still a little unsteady on its feet.
2971 *** The debugging information it produces (particularly the names
2972 of FUNCTION objects) is sometimes much less useful than what
2973 the old compiler produced.
2974 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2975 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2976 within a MACROLET) has been temporarily weakened.
2977 ** There are new compiler optimizations for various functions:
2978 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2979 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2980 *** the math functions TRUNCATE, FLOOR, and CEILING
2981 *** the function-of-all-trades COERCE
2982 Mostly these should be transparent, but there's one
2983 potentially-annoying problem (bug 117): when the compiler
2984 inline-expands a function and does type analysis on the result,
2985 it can create control paths which have type mismatches, and
2986 when it can't prove that those control paths aren't taken,
2987 it will issue WARNINGs about the type mismatches. This is
2988 a particular problem in practice for the new sequence functions.
2989 It's not clear how this should be fixed, and for now, a
2990 workaround is given in the entry for 117 in the BUGS file.
2991 ** (Because of the interaction between the two previous items --
2992 occasional inlining problems and new inline expansions -- some
2993 of the new sequence function optimizations won't really kick in
2994 completely until debugging information, and then inlining, are
2995 straightened out in some future version.)
2996 * minor incompatible changes:
2997 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2998 DIRECTORY no longer implicitly promotes NIL slots of its
2999 pathname argument to :WILD. In particular, when you ask for the
3000 contents of a directory (which you used to be able to do without
3001 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3002 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3003 ** changes in behavior that ANSI explicitly defines to be
3004 implementation dependent:
3005 *** The new compiler-only implementation still conforms with ANSI,
3006 but acts a little different than before. Besides the obvious
3007 changes in performance tradeoffs (that the cost per form passed
3008 to EVAL has gone up, and the cost per form executed by EVAL
3009 has gone down), the behavior of the system changes a little
3010 because there are no longer any interpreted function objects.
3011 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3012 e.g. doing COMPILE on the output of interactive DEFUN is
3014 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3016 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3017 has changed from (:CL) to NIL.
3018 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3019 e.g. #\Newline and #\Tab, don't have names specified in the
3020 ANSI Common Lisp standard, is now based on their ASCII symbolic
3021 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3022 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3023 are no longer used for output.
3024 ** changes in internal implementation constants:
3025 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3026 4 million. (If your application spends a lot of time GCing and
3027 you have a lot of RAM, you might want to experiment with
3028 increasing it even more.)
3029 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3030 However, almost all old code should still continue to work without
3031 immediate update, as SB-C-CALL is now a (deprecated) nickname
3033 ** Old operator names in the style DEF-FOO are now deprecated in
3034 favor of new corresponding names DEFINE-FOO, for consistency with
3035 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3036 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3037 internal symbols, but a few supported extensions like
3038 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3039 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3040 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3041 etc. as you get deeper into recursive calls to the debugger
3042 command loop, instead of the old "5]", "5]]", "5]]]"
3043 sequence. (I was motivated to do this when squabbles between
3044 ILISP and SBCL left me very deeply nested in the debugger. In the
3045 short term, this change will probably provoke more ILISP/SBCL
3046 squabbles, but hopefully it will be an improvement in the long run.)
3047 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3048 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3049 function, since declaiming return types involving aliens is
3050 (1) annoyingly messy to do by hand and (2) vital to efficient
3051 compilation of code which calls such functions.
3052 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3053 longer reexported by the SB-EXT package. They're solely useful
3054 for alien code, so it seems more logical that you should get
3055 them from the SB-ALIEN package, not in SB-EXT.
3056 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3057 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3058 features. Instead, the code that they used to control is always
3059 built into the system.
3060 * many other bug fixes
3061 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3062 advantage of the new EVAL-WHEN stuff and to clean them up in
3063 general, and they are now more ANSI-compliant in a number of
3064 ways. Martin Atzmueller is responsible for a lot of this.
3065 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3067 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3068 *** correct ERROR type for various file operations
3069 *** some fixes for Lisp streams
3070 *** DEFMETHOD syntax checking
3071 *** changing old weird representation of debug information as
3072 strings (which, among their other deficiencies, don't transform
3073 correctly when you rename packages, and don't change their
3074 print representation when you change things like *PACKAGE*
3075 and *PRINT-LENGTH*) to symbols and lists of symbols
3076 He also made several improvements and fixed several bugs in DESCRIBE.
3077 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3079 *** misbehavior of WRITE-STRING/WRITE-LINE
3080 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3081 and several other LOOP problems as well
3082 *** DIRECTORY when similar filenames are present
3083 *** DEFGENERIC with :METHOD options
3084 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3085 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3086 *** argument ordering in FIND with :TEST option
3087 *** mishandled package designator argument in APROPOS-LIST
3088 *** various problems in the backquote readmacro
3089 *** a bug in APROPOS
3090 *** probably some others that I'm not describing very well here,
3091 since the CVS log documents them by reference to sbcl-devel
3092 messages, and the SourceForge archives aren't working well.:-(
3093 ** Dan Barlow improved the Alpha port (and is making progress on the
3094 PPC port, for those of you who think different).
3095 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3096 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3097 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3098 continues to work on the SPARC port (for those of you in a position
3099 to look down upon our little PC-compatible boxes from a great height).
3100 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3101 and uses that copy, rather than the current dynamic value, when
3102 it's trying to decide whether to truncate output. Thus e.g.
3103 (let ((*print-lines* 50))
3104 (pprint-logical-block (stream nil)
3106 (let ((*print-lines* 8))
3107 (print (aref possiblybigthings i) stream)))))
3108 should now truncate the logical block only at 50 lines, instead of
3109 often truncating it at 8 lines, as it did before.
3110 * The doc/cmucl/ directory, containing old CMU CL documentation
3111 from the time of the fork, is no longer part of the base system.
3112 SourceForge has shut down its anonymous FTP service, and with it
3113 my original plan for distributing the old CMU CL documentation
3114 there. For now, if you need these files you can download an old
3115 SBCL source release and extract them from it.
3116 * The fasl file version number changed again, for dozens of reasons,
3117 some of which are apparent above.
3119 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3120 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3121 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3122 patch, so that DISASSEMBLE output is much nicer.
3123 * The code in the SB-PROFILE package now seems reasonably stable.
3124 I still haven't decided what the final interface should look like
3125 (I'd like PROFILE to interact cleanly with TRACE, since both
3126 facilities use function encapsulation) but if you have a need
3127 for profiling now, you can probably use it successfully with
3128 the current CMU-CL-style interface.
3129 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3130 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3131 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3132 link now returns the dangling link itself, and for similar
3133 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3134 link itself. (In these cases the old code signalled an error and
3135 looped endlessly, respectively.) Thus, DIRECTORY now works even
3136 in the presence of dangling and cyclic symbolic links.
3137 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3138 is now a supported extension again, since the consensus on
3139 sbcl-devel was that it can be useful for ordinary development
3140 work, not just for debugging SBCL itself.
3141 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3142 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3143 that currently-defined functions might be redefined later with
3144 different return types.
3145 * Hash tables can be printed readably, as inspired by CMU CL code
3146 of Eric Marsden and SBCL code of Martin Atzmueller.
3147 * better error handling in CLOS method combination, thanks to
3148 Martin Atzmueller porting Pierre Mai's CMU CL patches
3149 * more overflow fixes for >16Mbyte I/O buffers
3150 * A bug in READ has been fixed, so that now a single Ctrl-D
3151 character suffices to cause end-of-file on character streams.
3152 In particular, now you only need one Ctrl-D at the command
3153 line (not two) to exit SBCL.
3154 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3156 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3157 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3158 does the right thing.
3159 * The implementation of some type tests, especially for CONDITION
3160 types, is now tidier and maybe faster, due to CMU CL code
3161 originally by Douglas Crosher, ported by Martin Atzmueller.
3162 * Some math functions have been fixed, and there are new
3163 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3164 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3165 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3166 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3167 likely to be built into sbcl-0.7.0.)
3168 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3169 CL, ported to SBCL by Martin Atzmueller)
3170 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3171 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3172 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3173 * There's a new slam.sh hack to shorten the edit/compile/debug
3174 cycle for low-level changes to SBCL itself, and a new
3175 :SB-AFTER-XC-CORE target feature to control the generation of
3176 the after-xc.core file needed by slam.sh.
3177 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3178 COMPILE-FILE is no longer supported, so that now every function
3179 gets an entry point, so that block compilation looks a little
3180 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3181 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3182 returns the number of bytes consed since the system started,
3183 rather than the number consed since the first time the function
3184 was called. (The new definition parallels ANSI functions like
3185 CL:GET-INTERNAL-RUN-TIME.)
3186 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3187 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3188 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3189 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3190 * Fasl file version numbers are now independent of the target CPU,
3191 since historically most system changes which required version
3192 number changes have affected all CPUs equally. Similarly,
3193 the byte fasl file version is now equal to the ordinary
3196 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3197 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3198 is no longer recognized. I apologize for this, because it was
3199 listed in SB-EXT as a supported extension, but I found that
3200 its existing behavior was poorly specified, as well as incorrectly
3201 specified, and it looked like too much of a mess to straighten it
3202 out. I have enough on my hands trying to get ANSI stuff to work..
3203 * many patches ported from CMU CL by Martin Atzmueller, with
3204 half a dozen bug fixes in pretty-printing and the debugger, and
3205 half a dozen others elsewhere
3206 * fixed bug 13: Floating point infinities are now supported again.
3207 They might still be a little bit flaky, but thanks to bug reports
3208 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3209 as flaky as they were.
3210 * The --noprogrammer command line option is now supported. (Its
3211 behavior is slightly different in detail from what the old man
3212 page claimed it would do, but it's still appropriate under the
3213 same circumstances that the man page talks about.)
3214 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3215 are now supported, and enabled by default. Thus, the compiler can
3216 handle many floating point and complex operations much less
3217 inefficiently. (Thus e.g. you can implement a complex FFT
3219 * The compiler now detects type mismatches between DECLAIM FTYPE
3220 and DEFUN better, and implements CHECK-TYPE more correctly, and
3221 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3222 thanks to patches from Martin Atzmueller.
3223 * various fixes to make the cross-compiler more portable to
3224 ANSI-conforming-but-different cross-compilation hosts (notably
3225 Lispworks for Windows, following bug reports from Arthur Lemmens)
3226 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3227 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3228 fixed thanks to Pierre Mai's CMU CL patches.
3229 * fixes to keep the system from overflowing internal counters when
3230 it tries to use i/o buffers larger than 16M bytes
3231 * fixed bug 45a: Various internal functions required to support
3232 complex special functions have been merged from CMU CL sources.
3233 (When I was first setting up SBCL, I misunderstood a compile-time
3234 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3235 * improved support for type intersection and union, fixing bug 12
3236 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3237 more obscure bugs as well
3238 * some steps toward byte-compiling non-performance-critical
3239 parts of the system, courtesy of patches from Martin Atzmueller
3240 * Christophe Rhodes has made some debian packages of sbcl at
3241 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3242 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3243 stable, but are nonetheless usable. When he's ready, I'd be happy
3244 to add them to the SourceForge "File Releases" section. (And if
3245 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3246 * new fasl file format version number (because of changes in
3247 internal representation of (OR ..) types to accommodate the new
3248 support for (AND ..) types, among other things)
3250 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3251 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3253 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3255 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3256 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3257 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3258 * DESCRIBE now works on structure objects again.
3259 * Most function call argument type mismatches are now handled as
3260 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3261 know whether the function will be redefined before the call is
3262 executed. (The compiler could flag local calls with full WARNINGs,
3263 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3264 it doesn't keep track of enough information to know whether calls
3265 are local in this sense.)
3266 * Compiler output is now more verbose, with messages truncated
3267 later than before. (There should be some supported way for users
3268 to override the default verbosity, but I haven't decided how to
3269 provide it yet, so this behavior is still controlled by the internal
3270 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3271 src/compiler/ir1util.lisp.)
3272 * Fasl file format version numbers have increased again, because
3273 support for the Gray streams extension changes the layout of the
3274 system's STREAM objects.
3275 * The Gray subclassable streams extension now works, thanks to a
3276 patch from Martin Atzmueller.
3277 * The full LOAD-FOREIGN extension (not just the primitive
3278 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3279 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3280 but like most other programs, it defaults to copying the Unix
3281 environment from the original process instead of starting the
3282 new process in an empty environment.
3283 * Extensions which manipulate the Unix environment now support
3284 an :ENVIRONMENT keyword option which doesn't smash case or
3285 do other bad things. The CMU-CL-style :ENV option is retained
3286 for porting convenience.
3287 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3288 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3290 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3292 * A patch from Martin Atzmueller seems to have solved the SIGINT
3293 problem, and as far as we know, signal-handling now works cleanly.
3294 (If you find any new bugs, please report them!)
3295 * The system no longer defaults Lisp source file names to types
3296 ".l", ".cl", or ".lsp", but only to ".lisp".
3297 * The compiler no longer uses special default file extensions for
3298 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3299 seems to expect a single default extension for all compiled code,
3300 and there's no compelling reason to try to stretch the standard
3301 to allow two different extensions.) Instead, byte-compiled files
3302 default to the same extension as native-compiled files.
3303 * Fasl file format version numbers have increased again, because
3304 a rearrangement of internal implementation packages made some
3305 dumped symbols in old fasl files unreadable in new cores.
3306 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3307 many fewer weird special cases.
3308 * Bug #17 (differing COMPILE-FILE behavior between logical and
3309 physical pathnames) has been fixed, and some related misbehavior too,
3310 thanks to a patch from Martin Atzmueller.
3311 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3312 by Tim Moore, ported to SBCL by Martin Atzmueller.
3313 * Martin Atzmueller fixed several filesystem-related problems,
3314 including bug #36, in part by porting CMU CL patches, which were
3315 written in part by Paul Werkowski.
3316 * More compiler warnings in src/runtime/ are gone, thanks to
3317 more patches from Martin Atzmueller.
3318 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3321 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3323 * DESCRIBE now works on CONDITION objects.
3324 * The debugger now handles errors which arise when trying to print
3325 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3327 * The build system now uses an additional file, customize-target-features.lisp,
3328 to allow local modifications to the target *FEATURES* list. (The point of
3329 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3330 debugging features enabled, without having to worry about propagating it
3331 into everyone's system when I do a "cvs update".) When no
3332 customize-target-features.lisp file exists, the target *FEATURES* list
3333 should be constructed the same way as before.
3334 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3335 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3336 warn about behavior which is undefined under the ANSI spec. Note: This
3337 is specified by ANSI, but it's not very popular with programmers.
3338 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3339 macro in the SBCL sources for an example of a workaround which you
3340 might use to make portable ANSI-standard code which does what you want.
3341 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3342 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3343 when it's used as a non-toplevel form. (This is required in order
3344 to implement the DEFCONSTANT-EQX macro.)
3345 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3346 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3347 funny things, due to bugs in the implementation of EVAL-WHEN
3348 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3349 non-toplevel DEFCONSTANTs are uncommon.)
3350 * The core file version number and fasl file version number have been
3351 incremented, because the old noncompliant DEFCONSTANT behavior involved
3352 calling functions which no longer exist, and because I also took the
3353 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3354 * fixed bug 1 (error handling before read-eval-print loop starts), and
3355 redid debugger restarts and related debugger commands somewhat while
3357 ** The QUIT debugger command is gone, since it did something
3358 rather different than the SB-EXT:QUIT command, and since it never
3359 worked properly outside the main toplevel read/eval/print loop.
3360 Invoking the new TOPLEVEL restart provides the same functionality.
3361 ** The GO debugger command is also gone, since you can just invoke
3362 the CONTINUE restart directly instead.
3363 ** The TOP debugger command is also gone, since it's redundant with the
3364 FRAME 0 command, and since it interfered with abbreviations for the
3366 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3368 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3369 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3370 some porting work by Martin Atzmueller)
3371 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3372 with a boatload of patches which he ported to SBCL. Now that those
3374 ** The system tries to make sure that its low-priority messages
3375 are prefixed by semicolons, to help people who like to use
3376 syntax highlighting in their ILISP buffer. (This patch
3377 was originally due to Raymond Toy.)
3378 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3379 patches originally written by Raymond Toy.
3380 ** The compiler understands coercion between single-value and
3381 multiple-VALUES type expressions better, getting rid of some very
3382 weird behavior, thanks to patches originally by Robert MacLachlan
3383 and Douglas Crosher.
3384 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3385 lambda lists, thanks to a patch originally by Pierre Mai.
3386 ** The system no longer bogusly warns about "abbreviated type
3388 ** The compiler gets less confused by inlining and RETURN-FROM,
3389 thanks to some patches originally by Tim Moore.
3390 ** The system no longer hangs when dumping circular lists to fasl
3391 files, thanks to a patch originally from Douglas Crosher.
3392 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3393 undefined function error.
3394 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3395 in structure slot initforms) for now, documented workaround instead:-|
3396 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3397 * fixed bug 5: added stubs for various Gray stream functions called
3398 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3399 installed, at least appropriate type errors are generated
3400 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3401 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3402 consistently in DEFMETHOD forms.
3403 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3404 it doesn't seem to affect SBCL after all
3405 * The C runtime system now builds with better optimization and many
3406 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3408 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3410 * The system is now under CVS at SourceForge (instead of the
3411 CVS repository on my home machine).
3412 * The new signal handling code has been tweaked to treat register
3413 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3414 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3415 downstream, e.g. in debug-int.lisp, has implicit dependencies
3416 on the unsignedness of integer representation of machine words,
3417 and that caused the system to bomb out with infinite regress
3418 when trying to recover from type errors involving signed values,
3419 e.g. (BUTLAST '(1 2 3) -1).)
3420 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3421 (This was one of the bugs Peter Van Eynde reported back in July.)
3422 * The system now uses code inspired by Colin Walters' O(N)
3423 implementation of MAP (from the cmucl-imp@cons.org mailing
3424 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3425 inline the MAP operation, and there is more than one
3426 sequence argument to the MAP call (so that it can't just
3427 do ETYPECASE once and for all based on the type of the
3428 single sequence argument). (The old non-inline implementation
3429 of the general M-argument sequence-of-length-N case required
3430 O(M*N*N) time when any of the sequence arguments were LISTs.)
3431 * The QUIT :UNIX-CODE keyword argument has been renamed to
3432 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3433 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3435 * Raymond Wiker's patches to port dynamic loading from Linux to
3436 FreeBSD have been added.
3437 * The BUGS file is now more nearly up to date, thanks in large part
3438 to Martin Atzmueller's review of it.
3439 * The debugger now flushes standard output streams before it begins
3440 its output ("debugger invoked" and so forth).
3441 * The core version number and fasl file version number have both
3442 been incremented, because of incompatible changes in the layout
3444 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3445 used to not be called for a saved Lisp image.)
3446 * Martin Atzmueller's version of a patch to fix a compiler crash,
3447 as posted on sbcl-devel 13 September 2000, has been installed.
3448 * Instead of installing Martin Atzmueller's patch for the
3449 compiler transform for SUBSEQ, I deleted the compiler transform,
3450 and transforms for some similar consing operations.
3451 * A bug in signal handling which kept TRACE from working on OpenBSD
3453 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3454 away by constant folding
3455 * The system now defines its address space constants in one place
3456 (in the Lisp sources), and propagates them automatically elsewhere
3457 (through GENESIS and the sbcl.h file). Therefore, patching the
3458 address map is less unnecessarily tedious and error-prone. The
3459 Lisp names of address space constants have also been systematized.
3460 * CVS tags like dollar-Header-dollar have been removed from
3461 the sources, because they have never saved me trouble and
3462 they've been source of trouble working with patches and other
3463 diff-related operations.
3464 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3465 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3467 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3469 * The system has been ported to OpenBSD.
3470 * The system now compiles with a simple "sh make.sh" on the systems
3471 that it's supported on. I.e., now you no longer need to tweak
3472 text in the target-features.lisp-expr and symlinks in src/runtime/
3473 by hand, the make.sh takes care of it for you.
3474 * The system is no longer so grossly inefficient when compiling code
3475 involving vectors implemented as general (not simple) vectors (VECTOR T),
3476 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3477 which dares to use the various sequence functions on non-simple
3478 vectors, takes less of a performance hit.
3479 * There is now a primitive type predicate VECTOR-T-P
3480 to test for the (VECTOR T) type, so that e.g.
3481 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3482 can now be compiled with some semblance of efficiency. (The old code
3483 turned the type declaration into a full call to %TYPEP at runtime!)
3484 * AREF on (VECTOR T) is still not fast, since it's still compiled
3485 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3486 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3487 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3488 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3489 without making full calls to SUBTYPEP at runtime.
3490 (Some analogous efficiency issues for non-simple vectors specialized to
3491 element types other than T, or for non-simple multidimensional arrays,
3492 have not been addressed. They could almost certainly be handled the
3493 same way if anyone is motivated to do so.)
3494 * The changes in array handling break binary compatibility, so
3495 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3496 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3497 instead of (VALUES T T).
3498 * By following the instructions that Dan Barlow posted to sbcl-devel
3499 on 2 July 2000, I was able to enable primitive dynamic object
3500 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3501 functionality is not implemented (since it calls ld to resolve
3502 library references automatically, requiring RUN-PROGRAM for its
3503 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3504 try to resolve library references) is now supported.
3505 * The system now flushes the standard output streams when it terminates,
3506 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3507 them at several other probably-convenient times, e.g. in each pass of
3508 the toplevel read-eval-print loop, and after evaluating a form given
3509 as an "--eval" command-line option. (These changes were motivated by a
3510 discussion of stream flushing issues on cmucl-imp in August 2000.)
3511 * The source transform for TYPEP of array types no longer assumes
3512 that an array whose element type is a not-yet-defined type
3513 is implemented as an array of T, but instead punts, so that the
3514 type will be interpreted at runtime.
3515 * There is now some support for cross-compiling in make.sh: each of
3516 the phases of make.sh has its own script. (This should be transparent
3517 to people doing ordinary, non-cross-compile builds.)
3518 * Since my laptop doesn't have hundreds of megabytes of memory like
3519 my desktop machine, I became more motivated to do some items on
3520 my to-do list in order to reduce the size of the system a little:
3521 ** Arrange for various needed-only-at-cold-init things to be
3522 uninterned after cold init. To support this, those things have
3523 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3524 symbols with such names are now uninterned after cold init).
3525 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3526 fasl files for cold load.
3527 ** Remove the old compiler structure pooling code (which used to
3528 be conditional on the target feature :SB-ALLOC) completely.
3529 ** Redo the representation of some data in cold init to be more compact.
3530 (I also looked into supporting byte compiled code at bootstrap time,
3531 which would probably reduce the size of the system a lot, but that
3532 looked too complicated, so I punted for now.)
3533 * The maximum signal nesting depth in the src/runtime/ support code has
3534 been reduced from 4096 to 256. (I don't know any reason for the very
3535 large old value. If the new smaller value turns out to break something,
3536 I'll probably just bump it back up.)
3537 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3539 * Many, many bugs reported by Peter Van Eynde have been added to
3540 the BUGS list; some have even been fixed.
3541 * While enabling dynamic object file loading, I tried to make the
3542 code easier to understand, renaming various functions and variables
3543 with less ambiguous names, and changing some function calling
3544 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3545 * While trying to figure out how to do the OpenBSD port, I tried to
3546 clean up some of the code in src/runtime/. In particular, I dropped
3547 support for non-POSIX signal handling, added various comments,
3548 tweaked the code to reduce the number of compilation warnings, and
3549 renamed some files to increase consistency.
3550 * To support the new automatic configuration functionality in make.sh,
3551 the source file target-features.lisp-expr has been replaced with the
3552 source file base-target-features.lisp-expr and the machine-generated
3553 file local-target-features.lisp-expr.
3554 * fixed a stupid quoting error in make.sh so that using CMU CL
3555 "lisp -batch" as cross-compilation host works again
3557 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3559 * DESCRIBE no longer tries to call itself recursively to describe
3560 bound/fbound values, so that it no longer fails on symbols which are
3561 bound to themselves (like keywords, T, and NIL).
3562 * DESCRIBE now works on generic functions.
3563 * The printer now prints less-screwed-up representations of closures
3564 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3565 * A private symbol is used instead of the :EMPTY keyword previously
3566 used to mark empty slots in hash tables. Thus
3567 (DEFVAR *HT* (MAKE-HASH-TABLE))
3568 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3569 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3570 now does what ANSI says that it should. (You can still get
3571 similar noncompliant behavior if bang on the hash table
3572 implementation with all the symbols you get back from
3573 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3574 This breaks binary compatibility, since tests for equality to
3575 :EMPTY are wired into things like the macroexpansion of
3576 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3578 * There's now a minimal placeholder implementation for CL:STEP,
3579 as required by ANSI.
3580 * An obscure bug in the interaction of the normal compiler, the byte
3581 compiler, inlining, and structure predicates has been patched
3582 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3583 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3585 * Missing ordinary arguments in a macro call are now detected even
3586 when the macro lambda list contains &KEY or &REST.
3587 * The debugger no longer complains about encountering the top of the
3588 stack when you type "FRAME 0" to explicitly instruct it to go to
3589 the top of the stack. And it now prints the frame you request even
3590 if it's the current frame (instead of saying "You are here.").
3591 * As specified by ANSI, the system now always prints keywords
3592 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3594 * The default initial SIZE of HASH-TABLEs is now smaller.
3595 * Type information from CLOS class dispatch is now propagated
3596 into DEFMETHOD bodies, so that e.g.
3597 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3599 is now basically equivalent to
3600 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3601 (DECLARE (TYPE SINGLE-FLOAT X))
3603 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3604 operation, without having to do run-time type dispatch.
3605 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3606 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3607 * Since I don't seem to be making big file reorganizations very often
3608 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3609 is overflowing my ability to conveniently back them up), I've finally
3610 checked the system into CVS. (The CVS repository is on my home system,
3611 not at SourceForge -- putting it on SourceForge might come later.)
3612 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3613 high-level GC-NOTIFY-FOO functions send their output. (There's
3614 still very little control of where low-level verbose GC functions
3615 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3616 less than it used to -- the GC-NOTIFY-FOO functions are now under
3617 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3618 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3619 in only one place in the source code, and propagates it automatically
3620 everywhere that it's needed. Thus e.g. when I bump the version from
3621 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3622 * The C source files now include boilerplate legalese and documentation
3623 at the head of each file (just as the Lisp source files already did).
3624 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3625 to his page will be replaced with a link to his new CLiki service.
3627 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3629 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3630 * The build process now looks for GNU make under the default name "gmake",
3631 instead of "make" as it used to. If GNU make is not available as "gmake"
3632 on your system, you can change this default behavior by setting the
3633 GNUMAKE environment variable.
3634 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3635 can build without error under CMU CL.
3637 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3639 * There is now a partial SBCL user manual (with some new text and some
3640 text cribbed from the CMU CL manual).
3641 * The beginnings of a profiler have been added (starting with the
3642 CMU CL profiler and simplifying and cleaning up). Eventually the
3643 main interface should be through the TRACE macro, but for now,
3644 it's still accessed through vaguely CMU-CL-style functions and macros
3645 exported from the package SB-PROFILE.
3646 * Some problems left over from porting CMU CL to the new
3647 cross-compilation bootstrap process have been cleaned up:
3648 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3649 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3650 part when getting rid of the compiler *BACKEND* stuff.)
3651 ** The value of *NULL-TYPE* was screwed up, because it was
3652 being initialized before the type system knew the final
3653 definition of the 'NULL type. This screwed up several key
3654 optimizations in the compiler, causing inefficiency in all sorts
3655 of places. (I found it because I wanted to understand why
3656 GET-INTERNAL-RUN-TIME was consing.)
3657 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3658 PROCLAIM FTYPE information. Unfortunately this broke binary
3659 compatibility again, since now the forms output by DEFGENERIC
3660 to refer to functions which didn't exist in 0.6.3.
3661 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3662 can use the new (as of 0.6.3) transform for SOME into MAP into
3664 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3665 values to (INTEGER 0 1000000), so that the time code will no longer
3666 occasionally get blown up by Linux returning 1000000 microseconds
3667 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3668 its output conform to the ANSI spec. (Alas, this makes its output
3669 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3670 * A full call to MAP NIL with a single sequence argument no longer conses.
3671 * fixes to problems pointed out by Martin Atzmueller:
3672 * The manual page no longer talks about multiprocessing as though
3673 it were currently supported.
3674 * The ILISP support patches have been removed from the distribution,
3675 because as of version 5.10.1, ILISP now supports SBCL without us
3676 having to maintain patches.
3677 * added a modified version of Raymond Toy's recent CMU CL patch for
3678 EQUALP comparison of HASH-TABLE
3680 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3682 * The system still can't cross-compile itself with
3683 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3684 entails), but at least it can compile more of itself that way
3685 than it used to be able to, and various buglets which were uncovered
3686 by trying to cross-compile itself that way have now been fixed.
3687 * This release breaks binary compatibility again. This time
3688 at least I've incremented the FASL file format version to 2, so that the
3689 problem can be detected reliably instead of just causing weird errors.
3690 * various new style warnings:
3691 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3692 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3693 ** using the lexical binding of a variable named in the *FOO* style
3694 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3695 as specified by ANSI.
3696 * *RANDOM-STATE* is no longer automatically initialized from
3697 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3698 default behavior of the system is to repeat its behavior every time
3699 it's run. If you'd like to change this behavior, you can always
3700 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3701 old convention there was no comparably easy way to get the system to
3702 repeat its behavior every time it was run.
3703 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3704 FTYPE declarations has been removed, in favor of their ANSI
3705 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3706 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3707 the types of their sequence arguments can be determined at compile time.
3708 This is done through a new open code expansion for MAP which eliminates
3709 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3710 argument types can be determined at compile time.
3711 * The optimizer now transforms COERCE into an identity operation when it
3712 can prove that the coerced object is already of the correct type. (This
3713 can be a win for machine generated code, including the output of other
3714 optimization transforms, such as the MAP transform above.)
3715 * Credit information has been moved from source file headers into CREDITS.
3716 * Source file headers have been made more standard.
3717 * The CASE macro now compiles without complaining even when it has
3720 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3722 * (Note that the way that the PCL macroexpansions were rewritten
3723 to accommodate the change in DEFGENERIC below breaks binary
3724 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3725 not run under sbcl-0.6.2. Once we get out of alpha releases,
3726 i.e. hit release 1.0.0, we'll probably try to maintain binary
3727 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3728 and sbcl-1.4.4. Until then, however, it might be fairly common
3729 for maintenance releases to break binary compatibility.)
3730 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3732 * The reporting of unhandled signals has been changed to print some
3733 explanatory text as well as the report form. (Previously only
3734 the report form was printed.)
3735 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3736 it defines, so that the compiler no longer issues undefined function
3737 warnings for compiled-but-not-yet-loaded generic functions.
3738 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3739 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3740 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3741 section of the ANSI spec are supported.
3742 * The "" nickname for the "KEYWORD" package has been removed.
3743 The reader still handles symbol tokens which begin with a package marker
3744 as keywords, but it doesn't expose its mechanism for doing so in the
3745 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3746 * The system now issues STYLE-WARNINGs for contradictory TYPE
3747 proclamations. (Warnings for contradictory FTYPE proclamations would
3748 be nice too, but those can't be done usefully unless the type system
3749 is made smarter about FUNCTION types.)
3750 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3751 systematized, so that "*target-*.lisp is supposed to exist only on the
3752 target and imply that there's a related file which exists on the
3753 host, and *host-*.lisp is supposed to exist only on the host and imply
3754 that there's a related file which exists on the target. This involves a
3755 lot of renaming. Hopefully the acute confusion caused by the renaming
3756 will be justified by the reduction in chronic confusion..
3757 ** runtime-type.lisp -> early-target-type.lisp
3758 ** target-type.lisp -> late-target-type.lisp
3759 ** early-host-format.lisp -> early-format.lisp
3760 ** late-host-format.lisp -> late-format.lisp
3761 ** host-error.lisp -> misc-error.lisp
3762 ** early-error.lisp -> early-target-error.lisp
3763 ** late-error.lisp -> late-target-error.lisp
3764 ** host-defboot.lisp -> early-defboot.lisp
3765 ** code/misc.lisp -> code/target-misc.lisp
3766 ** code/host-misc.lisp -> code/misc.lisp
3767 ** code/numbers.lisp -> code/target-numbers.lisp
3768 ** code/early-numbers.lisp -> numbers.lisp
3769 ** early-host-type.lisp -> early-type.lisp
3770 ** late-host-type.lisp -> late-type.lisp
3771 ** host-typep.lisp -> typep.lisp
3772 ** load.lisp -> target-load.lisp
3773 ** host-load.lisp -> load.lisp
3774 ** host-disassem.lisp -> disassem.lisp
3775 ** host-insts.lisp -> insts.lisp
3776 ** byte-comp.lisp -> target-byte-comp.lisp
3777 ** host-byte-comp.lisp -> byte-comp.lisp
3778 ** host-signal.lisp -> signal.lisp
3779 ** host-defstruct.lisp -> defstruct.lisp
3780 ** late-target-type.lisp -> deftypes-for-target.lisp
3781 Furthermore, several other previously target-only files foo.lisp (e.g.
3782 hash-table.lisp and random.lisp) have been split into a target-and-host
3783 foo.lisp file and a target-only target-foo.lisp file, with their key type
3784 definitions in the target-and-host part, so that the cross-compiler will
3785 know more about target types.
3786 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3787 gone away. In their place are various *BACKEND-FOO* variables
3788 corresponding to the slots of the old structure.
3789 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3790 into the target SBCL has been fixed.
3791 * The chill.lisp system for loading cold code into a running SBCL
3793 * Support for the CMU CL "scavenger hook" extension has been removed.
3794 (It was undocumented and unused in the CMU CL sources that SBCL was
3795 derived from, and stale in sbcl-0.6.1.)
3796 * Various errors in the cross-compiler type system were detected
3797 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3798 (enabling various consistency checks). Many of them were fixed,
3799 but some hard problems remain, so the compiler is back to
3800 running without *TYPE-SYSTEM-INITIALIZED* for now.
3801 * As part of the cross-compiler type system cleanup, I implemented
3802 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3803 * I have started adding UNCROSS calls throughout the type system
3804 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3805 on cross-compiler input files will be able to go away, and various
3807 * CONSTANTP now returns true for quoted forms (as explicitly required
3810 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3812 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3813 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3814 (MAKE-LIST -1). In the longer term, it ought to become true
3815 that declarations are assertions even at SAFETY 1. For now, it's not
3816 quite true even at SAFETY 3, but it's at least more nearly true..
3817 (Note that this change seems to increases the size of the system by
3818 O(5%) and to decrease the speed of the compiler by 20% or more.)
3819 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3820 for the problem of printing dozens of lines of distracting information
3821 about low-level system machinery as part of the top stack frame
3822 on entry to the debugger when an undefined function was called.
3823 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3824 is not reset to COMMON-LISP-USER.
3825 * Compilation of stuff related to dyncount.lisp has been made conditional
3826 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3827 smaller. The various dyncount-related symbols have been moved into
3828 a new "SB-DYNCOUNT" package.
3829 * tty-inspect.lisp has been renamed to inspect.lisp.
3830 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3831 feature has gone away. (When we eventually port to other flavors of
3832 libc and/or Unix, we'll try to make the differences between flavors
3833 invisible at the user level.)
3834 * Various other *FEATURES* tags, and/or their associated conditionals,
3835 have been removed if obsolescent, or given better documentation, or
3836 sometimes given more-mnemonic names.
3838 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3840 * tidied up "make.sh" script
3841 * tidied up system directory structure
3842 * better "clean.sh" behavior
3843 * added doc/FOR-CMUCL-DEVELOPERS
3844 * many many small tweaks to output format, e.g. removing possibly-confusing
3845 trailing #\. character in DESCRIBE-INSTANCE
3846 * (EQUALP #\A 'A) no longer signals an error.
3847 * new hashing code, including EQUALP hashing
3848 * tidied up Lisp initialization and toplevel
3849 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3850 * command line argument processing
3851 * added POSIX-GETENV function to deal with Unix-ish environment variables
3852 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3853 terminating SBCL on EOF
3854 * non-verbose GC by default
3855 * There is no more "sbcl" shell script; the sbcl file is now the C
3856 runtime executable (just like CMU CL).
3857 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3859 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3860 symbol and package information as Lisp native symbol and package objects
3861 instead of strings naming symbols and strings naming packages. This way,
3862 whenever packages are renamed (as in warm init), debug information is
3863 transformed along with everything else.
3864 * tweaked the optimization policy declarations which control the building
3865 of SBCL itself. Now, among other things, the system no longer saves
3866 source location debugging information. (This helps two problems at once
3867 by reducing SBCL size and by keeping SBCL from trying to look for its
3868 sources -- which may not exist -- when reporting errors.)
3869 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3870 debugging and testing purposes
3871 * cleaned up printing, making the printer call PRINT-OBJECT for
3872 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3873 methods, giving nearly-ANSI behavior
3874 * converted almost all special variables to use *FOO* naming convention
3875 * deleted PARSE-TIME functionality, since it can be done portably
3876 * moved some files out of cold init into warm init
3877 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3879 * regularized formatting of source files
3880 * added an install.sh script
3881 * fixed ridiculous memory usage of cross-compiler by making
3882 compiler/alloc.lisp not try to do pooling unless it can hook
3883 itself into the GC of the cross-compilation host. Now the system
3884 builds nicely on my old laptop.
3885 * added :SB-ALLOC in target-features.lisp-expr
3886 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3887 was not implemented)
3888 * re-did condition handling and note reporting in the compiler. Notes
3889 are no longer handled by signalling conditions. Style warnings
3890 and warnings are handled more correctly and reported in such a way
3891 that it's easy to find one or the other in your output (so that you
3892 can e.g. figure out which of many problems caused COMPILE-FILE to
3894 * changed the severity of several compiler warnings from full WARNING
3895 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3896 compiler note reporting so that it doesn't use the condition system
3897 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3898 COMPILE-FILE command)
3899 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3900 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3901 no longer supported, since their implementation was deeply intertwingled
3902 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3903 * removed bogus "support" for compiler macros named (SETF FOO), and
3904 removed the compiler macro for SETF INFO (but only after making a fool
3905 of myself on the cmucl-imp mailing list by posting a bogus patch for
3906 DEFINE-COMPILER-MACRO..)
3907 * Compiled files containing forms which have side effects on the Lisp
3908 reader (such as DEFPACKAGE forms) are now handled more correctly.
3909 (Compiler queuing of top level lambdas has been suppressed by setting
3910 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3911 * deleted various currently-unused source files, e.g. gengc.lisp. They
3912 may be added back at some point e.g. when porting to other architectures,
3913 but until they are it's distracting to distribute them and to try to
3915 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3916 there were so many of them they're just distractions, and UNCROSS is
3917 known to be able to handle the current sources
3918 * moved PROFILE functionality into TRACE, so that it will be clear
3919 how the wrapping and unwrapping of functions when you profile them
3920 interacts with the wrapping and unwrapping of functions when you
3921 trace them. (Actually, the functionality isn't there yet, but at least
3922 the interface specification is there. Hopefully, the functionality will
3923 arrive with some future maintenance release.)
3924 * removed host-oops.lisp
3925 * changed signature of QUIT function to allow UNIX-CODE argument
3926 * fixed READ-SEQUENCE bug
3927 * tweaked verbose GC output so that it looks more like the progress
3928 output that ANSI specifies for functions like LOAD
3929 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3930 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob