1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
3 * feature: implemented the READER-METHOD-CLASS and
4 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
6 * optimization: faster LOGCOUNT implementation on x86 and x86-64
8 * fixed bug #337: use of MAKE-METHOD in method combination now works
9 even in the presence of user-defined method classes. (reported by
10 Bruno Haible and Pascal Costanza)
11 * fixed bug #339(c): if there are applicable methods not part of any
12 long-form method-combination group, call INVALID-METHOD-ERROR.
13 (reported by Bruno Haible)
14 * bug fix: improved the handling of type declarations and the
15 detection of violations for keyword arguments with non-constant
17 * bug fix: erronous calls to PATHNAME were being optimized away.
18 (reported by Richard Kreuter)
19 * bug fix: compiled calls to TYPEP were mishandling obsolete
20 instances. (reported by James Bielman and Attila Lendvai)
22 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
23 * added support for the ucs-2 external format. (contributed by Ivan
25 * minor incompatible change: pretty printing of objects of type
26 (cons symbol) is, in the default pprint-dispatch-table, now
27 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
29 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
30 called later in a class's lifetime, possibly as late as when the
31 first instance of the class is created. Previously,
32 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
33 class became finalizeable.
34 * fixed bug: FILE-POSITION sometimes returned inconsistent results
35 for multibyte external-format streams. (thanks to "vbzoli")
36 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
37 with :ALLOCATION :CLASS inherited from superclasses of the
39 * fixed bug: anonymous classes can now be created using the :NAME
40 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
41 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
42 * fixed bug: core-files saved with :EXECUTABLE T can again be
43 executed when SBCL_HOME isn't set. (reported by James Knight)
44 * fixed bug: toplevel LOCALLY forms with declarations could
45 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
46 * fixed bug: printing from several different threads using different
47 values of *print-case* could cause invalid output, due to
48 some internal special variables of the printer not being bound
49 thread-locally (reported by Max Mikhanosha)
50 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
51 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
52 (reported by Pascal Costanza)
53 * fixed bug: FINALIZE-INHERITANCE is called from
54 REINITIALIZE-INSTANCE on classes when the class has previously
55 been finalized, as required by AMOP.
56 * minor code generation optimizations:
57 ** better register allocation in CLOS dispatching functions
58 ** overflow detection when coercing signed bytes to fixnums on x86-64
59 ** is now implemented with one IMUL instruction instead of three shifts
60 ** more efficient bit-vector access on x86 and x86-64
61 ** more efficient access to raw structure slots on x86 and x86-64
62 * fixed some bugs revealed by Paul Dietz' test suite:
63 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
66 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
67 * feature: thread support on Solaris/x86, and experimental thread support
69 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
71 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
72 default method for SLOT-UNBOUND.
73 * minor incompatible change: prevent the user from specializing the
74 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
75 somewhat counter to the intent of the protocol, I (CSR) think, and
76 additionally it just doesn't work in SBCL as currently
77 implemented, thanks to optimizations (that are always valid for
78 the other three SLOT-VALUEish functions, but not for the setter).
79 * minor incompatible change: the :SB-LDB feature is now enabled by
80 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
81 the low-level debugger.
82 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
83 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
84 down to an SB-SYS:FD-STREAM, allowing direct communication in
85 more cases. Temporary files and pipes are still used as a fallback
87 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
88 on the non-reentrant C functions localtime(3) and gmtime(3).
89 * bug fix: global optimization policy was not visible in LOCALLY and
91 * bug fix: class objects can be used as specializers in methods.
92 (reported by Pascal Costanza)
93 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
94 with a type error. (reported by blitz_ on #lisp)
95 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
96 failed with a type error. (reported by Pascal Bourguignon)
97 * bug fix: merging pathnames against defaults with :DIRECTORY
98 starting with '(:RELATIVE :BACK) should preserve the :BACK.
99 (reported by James Y Knight)
100 * bug fix: saving large (>2GB) cores on x86-64 now works
101 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
102 constant index and a (simple-array (signed-byte 32)) array
103 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
104 error (patch by Robert J. Macomber)
105 * feature: TIME now displays the amount of run-time spent in GC
106 * bug fix: The debugger now does a better job of respecting
107 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
108 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
109 workaround for bug 403.)
110 * bug fix: floating point exception handling now works on FreeBSD
111 (thanks to NIIMI Satoshi)
112 * fixed some bugs revealed by Paul Dietz' test suite:
113 ** MISC.641: LET-conversion were not supposed to work in late
115 * improvements to the Win32/x86 port:
116 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
117 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
119 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
120 * new feature: source path information is generated for macro-expansion
121 errors for use in IDE's like Slime (thanks to Helmut Eller)
122 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
123 * bug fix: compiler does not loop forever on an invalid type in
125 * improvement: compilation of most CLOS applications is significantly
127 * optimization: added a limited bytecode compiler for simple toplevel
128 forms, speeding up compilation and FASL loading
130 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
131 * minor incompatible change: in sbcl-0.9.11 (but not earlier
132 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
133 into subclasses of the finalized class. Now user calls to
134 FINALIZE-INHERITANCE finalize just the one class, and calls by the
135 system return before any subclasses are finalized.
136 * minor incompatible change: The reader no longer ignores errors
137 regarding non-existent packages in #+ and #- feature tests.
138 * new feature: command line options --no-sysinit, --no-userinit to
139 inhibit loading the corresponding init files
140 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
141 for sending data through UDP sockets (thanks to François-René Rideau)
142 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
143 error is signalled instead (thanks to François-René Rideau)
144 * minor incompatible change: Error signalling behaviour of lexical
145 operations violating package locks has changed slightly. Refer to
146 documentation on package locks for details.
147 * enhancement: EVAL can process IF-expressions without resorting to the
149 * bug fix: Some operations involving SIN, COS, or TAN weren't being
150 constant-folded properly due to missing out-of-line functions.
151 (reported by Mika Pihlajamäki)
152 * bug fix: LISTEN sometimes returned T even in cases where no data was
153 immediately available from the stream
154 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
155 were reversed. (reported by Levente Mészáros)
156 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
157 when given a vector displaced to an adjustable array. (reported
159 * bug fix: derivation of float boundaries from numbers outside the
160 appropriate float range (reported by John Wiseman)
161 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
163 * bug fix: precomputing cache entries for generic functions with
164 some subclasses of specializers as yet invalid does not attempt to
165 fill a cache line with a negative offset. (reported by Levente
167 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
168 allow condition class objects as arguments to DOCUMENTATION and
169 (SETF DOCUMENTATION); only find and set documentation for
170 structure names for the STRUCTURE doc-type. (suggested by Gary
172 * improvements to the Win32/x86 port:
173 ** (user-homedir-pathname) and default initialization file
174 locations now know about the user's "Documents and Settings"
175 directory (thanks to Yaroslav Kavenchuk)
176 ** run-program is implemented (thanks to Mike Thomas)
177 ** sockets support (thanks to Timothy Ritchey)
178 ** better backtrace support (thanks to Alastair Bridgewater)
179 ** sb-grovel supported
180 ** asdf-install and sb-posix work somewhat
181 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
182 * improvements to the Solaris/x86 port:
183 ** works on Solaris 11/Solaris Express
184 ** floating-point exception handling support
185 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
186 * fixed some bugs revealed by Paul Dietz' test suite:
187 ** REMOVE-METHOD returns its generic function argument even when
188 the method is not one of the generic functions' methods.
189 ** objects declared as MEMBER types can be admissible arguments to
191 ** printing characters should simply be printed by the FORMAT ~:C
193 ** compiler failure when compiling functions with hairy constant
194 defaults for optional parameters.
195 ** compiler produces wrong code when MAYBE-INLINE-expanding a
196 function, which is already optimized.
198 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
199 * new platform: experimental support for SBCL x86/Darwin, including
200 MacOS X 10.4.5 on Intel.
201 * new feature: Unicode character names are now known to the system
202 (through CHAR-NAME and NAME-CHAR).
203 * new feature: the filesystem location of SBCL's core file is
204 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
205 * minor incompatible change: the contrib modules SB-POSIX and
206 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
207 this change is to make it easier to distribute
208 location-independent binaries.
209 * bug fix: as implied by AMOP, standardized classes no longer have
210 slots named by external symbols of public packages. (reported by
212 * optimization: calling functions via constant symbols -- as in
213 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
214 via the function object as in (FUNCALL #'FOO).
215 * optimization: on x86 and x86-64, the calling convention for the
216 case of dealing with an unknown number of values has been altered
217 to be friendlier to the prediction heuristics implemented,
218 particularly with reference to CALL and RET pairing. (thanks to
219 Alastair Bridgewater)
220 * optimization: on x86, the code for access to thread-local symbol
221 values and binding/unbinding of thread-local symbols is smaller.
222 (thanks to Alastair Bridgewater)
223 * enhancement: CONSTANTP is now able to determine constantness of
224 more complex forms, including calls to constant-foldable standardized
225 functions and some special forms beyond QUOTE.
226 * fixed bug: occasional GC crashes on Solaris/x86
227 * optimization: x86-64 supports stack allocation of results of simple
228 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
229 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
230 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
231 (thanks to James Knight)
232 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
233 by the standard (thanks to Stephen Compall)
235 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
236 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
237 be used for bundling the runtime and the core file into one
238 executable binary. This feature is not currently supported on all SBCL
239 platforms. (thanks to James Bielman and NIIMI Satoshi)
240 * new feature: a generational or ephemeral garbage collector is now
241 the default on the PowerPC platform (both Linux and Darwin). The
242 old Cheney (stop and copy) collector is a build-time option.
243 (thanks to Cyrus Harmon, after Raymond Toy)
244 * minor incompatible change: the method by which SBCL finds its
245 contributed modules has changed; it no longer relies on symbolic
246 links from an $SBCL_HOME/systems directory, but searches directly
247 in the subdirectories of $SBCL_HOME.
248 * enhancement: the dynamic heap size on the Linux/PPC platform is
249 markedly larger, even using the older Cheney garbage collector.
250 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
251 certain complicated string types. (reported by Gary King)
252 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
253 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
254 * fixed bug: DOCUMENTATION on structures no longer signals an
255 error if no structure type of the right name exists. (reported by
257 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
258 applicable non-standard primary or :AROUND method on
259 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
260 no longer cause unbound variable errors. (reported by Kevin Reid)
261 * fixed bug: metacircle resolution in cases where methods have slots
262 added before the slots from STANDARD-METHOD. (reported by Jean
264 * fixed bug: the Power PC assembly code for calling into lisp
265 sometimes computed its return address wrongly (depending on the
266 15th bit of the address, fixed at link time). This used to
267 manifest itself in a segmentation violation while building PCL.
268 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
269 many others over the years)
270 * fixed bug: ROOM no longer reports silly numbers for stack usage if
271 the stack pointer (treated as a signed integer) is negative.
272 (thanks to Peter van Eynde)
274 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
275 * new platform: experimental support for the Windows operating
276 system has been added. (thanks to Alastair Bridgewater)
277 * fixed several bugs in and robustified the PPC FFI (including
278 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
279 * bug fix: allow non-simple string symbol names (reported by Paul
281 * bug fix: interrupt handling on NetBSD (thanks to Richard M
283 * bug fix: saving a core corrupted callbacks on x86/x86-64
284 * bug fix: closed a loophole in metacircularity detection and
285 grounding in the PCL implementation of CLOS.
286 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
287 (reported by tomppa on #lisp)
288 * bug fix: clear the direction flag on Lisp -> C transitions, as
289 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
290 (reported by Andrej Grozin and Hendrik Maryns)
291 * optimization: major improvements to GC efficiency on GENCGC platforms
292 * optimization: faster implementation of EQUAL
293 * optimization: emit more efficient opcodes for some common
294 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
295 * optimization: several other minor code-generation improvements on x86-64
296 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
298 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
299 * minor incompatible change: (SETF CLASS-NAME) and (SETF
300 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
301 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
302 by ANSI as a generic function, and for consistency (SETF
303 GENERIC-FUNCTION-NAME) is treated likewise.
304 * fixed bug #233.b: make constraint propagation notice when a variable
305 value is changed after it is referenced but before it is used
306 * fixed bug #296: no more arbitrary behaviour from filenames with
307 odd characters as --load arguments. (reported by Adam Warner)
308 * fixed bug #390: :CHARACTER-SET pathname components now work as
309 expected. (reported by Tim Daly Jr)
310 * fixed bug #391: complicated :TYPE intersections in slot
311 definitions no longer cause an error in PCL internals.
312 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
313 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
314 returning the number of octets which would be written to the
315 file-stream. (thanks to Robert J. Macomber)
316 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
317 arguments to the internal stream functions. (thanks to David
319 * bug fix: stack exhaustion is now handled on the x86/SunOS
320 platform. (thanks to Daisuke Homma)
321 * bug fix: more accurate ROOM results on GENCGC platforms
322 * optimization: improved type inference for arithmetic-for
323 index variables in LOOP
324 * optimization: faster floating-point SQRT on x86-64
325 * fixed some bugs revealed by Paul Dietz' test suite:
326 ** DOCUMENTATION returns NIL instead of "" for method combinations
327 that don't have a docstring
329 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
330 * minor incompatible change: (SETF CLASS-NAME) and (SETF
331 GENERIC-FUNCTION-NAME) are no longer generic functions, and
332 therefore are not customizeable by user code (as seems to be at
333 least permitted and maybe required by AMOP). As a consolation,
334 however, the SBCL implementation of these functions now calls
335 REINITIALIZE-INSTANCE as specified by AMOP.
336 * bug fix: slot-definition documentation is propagated as per ANSI
337 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
338 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
339 argument, as do eslotd initialization methods. (from Pascal
340 Costanza's "Closer" project)
341 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
342 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
344 * bug fix: it is now possible to have more than one subclass of
345 STANDARD-GENERIC-FUNCTION without causing stack overflow.
346 (reported by Bruno Haible, Pascal Costanza and others)
347 * bug fix: the dependent update protocol now works for generic
348 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
350 * bug fix: condition-class instances corresponding to
351 DEFINE-CONDITION forms are now created eagerly. (reported by
352 Kalle Olavi Niemitalo on comp.lang.lisp)
353 * bug fix: floating point printing is more accurate in some
354 circumstances. (thanks to Simon Alexander)
355 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
356 merged with *DEFAULT-PATHNAME-DEFAULTS*.
357 * bug fix: callbacks on OS X now preserve stack-alignment.
358 (thanks to Cyrus Harmon)
359 * enhancement: the x86-64 disassembler is much better at
360 disassembling SSE instructions. (thanks to Lutz Euler)
361 * enhancement: CHECK-TYPE on a variable now allows type-inference
362 (thanks to Vincent Arkesteijn)
363 * optimization: improved performance of EUC-JP external format.
364 (thanks to NIIMI Satoshi)
365 * optimization: performance improvements to IO on file streams of
366 :ELEMENT-TYPE CHARACTER
367 * optimization: much faster memory allocation on x86-64
368 * optimization: faster garbage collections (latency and throughput)
370 * optimization: faster bignum subtraction and division on x86 and x86-64
371 (thanks to Lutz Euler)
372 * optimization: more accurate type-inference for loops that use a
373 floating point index variable or a negative step.
375 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
376 * bug fix: add a workaround to SBCL looping infinitely at startup on
377 Linux kernels with apparently buggy implementations of personality().
378 (thanks to Svein Ove Aas)
379 * bug fix: Unicode symbols are correctly printed in LDB backtraces
380 (thanks to David Lichteblau)
381 * bug fix: local bindings shadow global symbol macros for
382 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
383 * optimization: non-open coded uses of numeric comparison operators
384 (e.g. >) no longer cons when called with more than one parameter
385 on platforms supporting dynamic-extent allocation.
386 * enhancement: saving cores with foreign code loaded is now supported
387 on MIPS/Linux in addition to the previously supported platforms.
388 * bug fix: FIND-RESTART now tests for activity, not applicability when given
389 a restart object as identifier. (reported by Helmut Eller for CMUCL)
390 * bug fix: division by zero in sb-sprof when no samples were collected
391 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
392 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
393 (thanks to Alexander Kjeldaas)
394 * new feature: ignoring the return values of destructive functions
395 like NREVERSE signals a compile-time style-warning.
396 (thanks to Kevin Reid)
397 * new feature: the alignment of alien structure fields can be
398 explicitly specified. (thanks to Cyrus Harmon)
399 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
400 and dump core on SIGQUIT
402 ** incompatible change: threads do not inherit values of specials
403 from their parents (see manual)
404 ** bug fix: threads stacks belonging to dead threads are freed by the
405 next exiting thread, no need to gc to collect thread stacks anymore
406 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
407 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
408 ** bug fix: dynamic variable and thread start related gc lossage
409 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
411 * fixed some bugs revealed by Paul Dietz' test suite:
412 ** SUBTYPEP is slightly more accurate on heinously complicated
413 CONS types where some of the members have uncertain (in the
414 NIL, NIL sense) type relationships to each other.
416 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
417 no longer purified unless :PURIFY T is explicitly specified.
418 ** Non-purified cores are significantly smaller than before
420 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
421 * new feature: timers based on Zach Beane's excellent timer package
422 * added support for the following external formats: koi8-u,
423 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
424 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
425 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
426 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
427 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
428 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
429 * incompatible change: a threaded SBCL will no longer revert to
430 non-threaded mode on non-NPTL systems, but refuse to start entirely.
431 * bug fix: interrupts are disabled until startup is complete; no
432 more sigsegvs when receiving a signal to soon
433 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
435 * bug fix: add a workaround for the memory randomization features in
436 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
437 workaround will only be in effect on systems with the proc filesystem
439 * bug fix: printing objects of type HASH-TABLE signals a
440 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
442 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
443 have been running for over 50 days. (reported by Gilbert Baumann)
444 * bug fix: the logic for getting names of functions gets less
445 confused when confronded with alternate-metaclass
446 funcallable-instances. (reported by Cyrus Harmon)
447 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
448 consistent, even on internal alternate-metaclass objects.
449 * bug fix: flush closure information collected by physical
450 environment analysis prepass before the main pass. (bug reported
452 * bug fix: compiler pack phase does not modify a hashtable, which is
453 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
454 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
455 may be expanded. (reported by Alexander <malishev> on c.l.l)
456 * bug fix: no more style-warnings when compiling code using LAST
457 under high-SPEED low-SPACE settings. (reported by David Wallin
459 * fixed some incompatibilities between SBCL's MOP and the MOP
461 ** the METAOBJECT class is now implemented;
462 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
463 STANDARD-OBJECT, as required;
464 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
465 now compatible (as required by VALIDATE-SUPERCLASS); there
466 remains a consistency requirement over the presence or absence
467 of the FUNCTION class in the superclass list of finalized
468 classes; see the manual for more details;
469 ** the :AROUND method for COMPUTE-SLOTS on
470 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
471 requested slot ordering.
473 ** bug fix: parent thread now can be gc'ed even with a live
475 ** bug fix: binding a special with PROGV to no value is not
476 the same as that symbol not having been bound (thanks to
478 ** bug fix: binding specials is thread safe (thanks to
480 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
481 and SB-SPROF do not die with 'no handler for signal XX in
482 interrupt_handle_now(..)' anymore
483 ** bug fix: WITH-TIMEOUT works with multiple running threads
484 * fixed some bugs revealed by Paul Dietz' test suite:
485 ** ENSURE-GENERIC-FUNCTION should take a method class object for
486 the :method-class keyword argument.
488 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
489 * new port: the Solaris operating system on x86 processors is now
490 mostly supported, though some rough edges in the environment
491 remain. (thanks to Daisuke Homma)
492 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
493 space for its heap. (thanks to Thiemo Seufer)
494 * optimization: SBCL on MIPS platforms now supports dynamic-extent
495 closures. (thanks to Thiemo Seufer)
496 * minor incompatible change: eof selects abort in the debugger.
497 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
498 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
500 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
501 deprecated, and will go away in a future revision of SBCL.
502 * minor incompatible change: GC-ON and GC-OFF are no longer
503 implemented with a counter, it does not matter how many times gc
504 is switched on or off
505 * bug fix: discriminating functions for generic function classes
506 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
507 make invalid assumptions about method precedence order. (reported
509 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
510 platforms. (thanks to Thiemo Seufer)
511 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
512 * bug fix: correct pathname printing with printer escaping is on.
513 (thanks to Kevin Reid)
514 * bug fix: complex VOP definitions in "user-space" no longer trigger
515 package locks. (reported by Zach Beane)
516 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
517 for funcallable-instance functions, and is no different from
519 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
520 characters in the current readtable. (reported by Nicholas Neuss)
521 * bug fix: SUBTYPEP on various CONS types returns more a more
522 accurate acknowledgment of its certainty.
523 * optimizations: REMOVE-DUPLICATES now runs in linear time on
524 lists in some cases. This partially fixes bug 384.
525 * flush all standard streams before prompting in the REPL and the
527 * bug fix: signal handling and triggering gc do not conflict
528 directly anymore, in particular a high frequency sb-sprof does
529 not prevent gc from running
530 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
531 approximation for timezone and DST information between the
532 universal time epoch and the smallest negative 32-bit time_t.
533 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
534 year 1899 so long as the encoded time is non-negative.
535 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
536 the correct answer for non-constant rotate amounts when performing
537 an inline 32-bit rotation.
539 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
540 there is only one thread in the session
541 ** bug fix: memory leak for streams created in one thread and
542 written to in another
543 ** bug fix: lockup when compiled with gcc4
544 ** bug fix: race that allows the gc to be triggered when gc is
546 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
547 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
549 ** bug fix: finished threads are gc'ed properly
550 * fixed some bugs revealed by Paul Dietz' test suite:
551 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
552 has arguments with a different set of applicable methods from
553 the orignal arguments.
554 ** The type error thrown by MAP now has a correct expected-type
556 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
557 name a compiled function.
558 ** Three MISC tests where a large bignum was improperly coerced to
559 a float that couldn't represent that bignum during type
560 derivation were fixed.
561 ** SUBTYPEP can now handle types involving the negation of a
562 list-form FUNCTION type.
563 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
564 as (COMPLEX (AND RATIO (NOT FIXNUM))).
565 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
567 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
568 * New feature: Experimental support for bivalent streams: streams
569 opened with :element-type :default now allow character and binary
570 (unsigned-byte 8) I/O
571 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
572 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
574 * bug fix: no more highly sporadic "couldn't check whether ~S is
575 readable" when reading a stream and an interrupt hits in the middle
576 of a select system call
577 * compiler better recognizes complex arrays (reported by Eduardo
579 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
580 for variables on SBCL built with linkage-tables. (reported by Luis
582 * various error reporting improvements.
583 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
584 (Thanks to Thiemo Seufer)
585 * bug fix: nested reader invokations work correctly
586 * bug fix: it is possible to have simultaneous references to foreign
587 code and foreign data with the same name.
589 ** added x86-64 support
590 ** incompatible change: the threading api now works with thread
591 objects instead of thread ids
592 ** bug fix: threads are protected from signals and interruption when
593 starting up or going down
594 ** bug fix: a race where an exiting thread could lose its stack to gc
595 ** bug fix: don't halt on infinite error in threads if possible
596 ** fixed numerous gc deadlocks introduced in the pthread merge
597 ** bug fix: fixed thread safety issues in read and print
598 ** bug fix: debugger doesn't hang on session lock if interrupted at
599 an inappropriate moment
600 ** bug fix: run-program is now thread safe(r)
601 ** bug fix: inner with-recursive-lock no longer releases the mutex
602 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
603 * fixed some bugs revealed by Paul Dietz' test suite:
604 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
605 EXPECTED-TYPE slots filled.
606 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
608 ** MAKE-CONDITION accepts classes as type-designators.
609 ** COMPILE may never return NIL.
610 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
611 range before calling Unix time functions
613 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
614 * numerous signal handling fixes to increase stability
615 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
616 * minor incompatible change: we now correctly canonize default
617 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
618 as per the MOP, rather than the historical (INITARG INITFUNCTION
619 INITFORM). (reported by Bruno Haible)
620 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
621 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
622 for more information.
623 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
624 pathname is a directory pathname.
625 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
626 * dynamic space size on PPC has been increased to 768Mb. (thanks to
628 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
629 :METACLASS argument in addition to a class name. (reported by
630 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
631 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
632 (reported by Bruno Haible; patch from Gerd Moellmann)
633 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
635 * bug fix: more cleanups to the floating point exception handling on
636 x86-64 (thanks to James Knight)
637 * bug fix: the compiler does not try to constant fold calls of
638 COERCE and BIT-* functions when they return freshly constructed
639 objects. (reported by Nikodemus Siivola and Paul Dietz)
640 * optimization: improved the MIPS versions of generic (in the
641 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
642 * optimization: direct conversion of (unsigned-byte 32) to floats on
643 the PowerPC platform.
644 * optimization: structure instances with raw slots now use less
645 memory, and probably show better memory locality. (thanks to
647 * optimization: DYNAMIC-EXTENT declarations for lists and closures
648 are treated as requests for stack allocation on the x86-64,
649 Alpha-32, PPC and SPARC platforms.
650 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
651 the wrong file descriptor; implementation of SOCKET-OPEN-P.
652 (thanks to Tony Martinez)
654 ** gcing a dead thread can no longer lead to lockups
655 ** threads block signals until they are set up properly
656 ** errno is no longer shared by threads
657 ** interrupt-thread restores the eflags register on x86
658 ** fixed some lockups due to gc/thread interaction
659 * fixed some bugs revealed by Paul Dietz' test suite:
660 ** invalid dotted lists no longer raise a read error when
662 ** signal an error if a symbol that names a declaration is used
663 as the name of a type, or vice versa
664 ** allow using the (declare (typespec var*)) abbreviation for
665 (declare (type typespec var*)) with all type specifiers
666 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
667 ** always return NIL from PPRINT-POP when OBJECT is NIL
668 ** don't signal errors when pretty-printing malformed LABELS,
669 FLET or MACROLET forms
670 ** declarations in a DOLIST body are also in scope for the
672 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
674 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
677 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
678 * fixed cross-compiler leakages that prevented building a 32-bit
679 target with a 64-bit host compiler.
680 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
681 opened with :IF-EXISTS :OVERWRITE.
682 * fixed bug 281: error for an invalid qualifier in a short-form method
683 combination method is not signalled until the faulty method is called.
684 * bug fix: iteration variable type inferrer failed to deal with open
685 intervals. (reported by Alan Shields)
686 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
687 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
688 or more runtime options were provided to the sbcl binary.
689 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
690 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
691 * optimization: there's now a fast-path for fixnum arguments in the
692 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
693 * optimization: the code generated on x86-64 is more compact thanks
694 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
695 * bug fix: floating-point exception handling now partly works on
696 x86-64. (Thanks to James Knight)
697 * improvement to the MIPS backend from Thiemo Seufer: C-style
698 64-bit long long arguments and return values to alien functions
700 * fixed some bugs revealed by Paul Dietz' test suite:
701 ** the type-error signalled from WARN has a filled-in DATUM slot.
702 ** the type-error required when a stream is not associated with
703 a file has the stream as its datum.
704 ** type-errors on single-floats on x86-64 no longer have
705 :INVALID-OBJECT as the datum
706 ** the type-errors signalled for invalid function names now have
707 a correct expected type
708 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
709 for structures defined with a :TYPE. Documentation strings for
710 typed structures are no longer immediately discarded
711 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
712 broadcast streams and synonym streams. FILE-LENGTH now also works
713 on broadcast streams.
715 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
716 * incompatible change: the --noprogrammer option, deprecated since
717 version 0.7.5, has been removed. Please use the equivalent
718 --disable-debugger option instead.
719 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
721 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
722 inoperational for a while now) has been completely removed.
723 * null lexical environments are now printed as #<NULL-LEXENV>,
724 significantly reducing the amount of clutter in typical backtraces.
725 * documentation on weak pointers, finalization, and after GC hooks
726 has been added to the manual.
727 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
728 as other specialized array types, is much faster. SUBSEQ and
729 COPY-SEQ on such arrays have also been sped up.
730 * optimization: EQL is now more efficient when at least other argument
731 is known to be of type (OR FIXNUM (NOT NUMBER)).
732 * fixed bug: the runtime is now less vulnerable to changes in the
733 size of the SBCL object on OS X, and virtual memory is reserved for
734 all spaces that need to be at a fixed address.
735 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
736 * fixed bug: finalizers and after GC hooks that cause consing are now
738 * fixed bug: compiler error messages and summaries are now printed to
739 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
740 * fixed inference of the upper bound of an iteration variable.
741 (reported by Rajat Datta).
742 * fixed bug 211e: calling local functions with duplicated constant
743 keyword argument no longer causes a bogus style warning about an
745 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
746 ftype declaration to be disregarded. (reported by Dave Roberts)
747 * fixed bug 373: caused by erronous compilation of references to alien
748 variables in the runtime on ppc/darwin.
749 * fixed bug 376: CONJUGATE type deriver.
750 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
751 (reported by Baughn on #lisp)
752 * a cross-compiler bug on non-x86 platforms has been identified and
753 fixed. (thanks to Bruno Haible)
754 * improvements to the MIPS runtime code for increased stability.
755 (thanks to Thiemo Seufer)
756 * increased the maximimum compact environment size to allow
757 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
758 * partial workaround for bug 135: don't name the function we're
759 calling for hairy cases of EVAL, so as not to accumulate one environment
760 entry per call to EVAL. (reported by Kevin Reid)
761 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
762 * optimization: type testing for non-vector arrays should be faster.
763 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
765 * bug fix: setting 31st element of a bit vector to zero did not work
767 * bug fix: redefining a class definition which failed due to a
768 previous accessor / function clash now works (but see BUGS entry
769 #380 for more problems in this area). (thanks to Zach Beane)
770 * the long form of DEFINE-METHOD-COMBINATION disables method group
771 checking when given a single method group with pattern *. (thanks
773 * on x86 compiler supports stack allocation of results of simple
774 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
775 * support for building and running on Mac OS X 10.4 "Tiger" has been added
776 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
777 * fixed some bugs related to Unicode integration:
778 ** the restarts for recovering from input and output encoding
779 errors only appear when there is in fact such an error to
781 * fixed some bugs revealed by Paul Dietz' test suite:
782 ** MISC.549 and similar: late transformation of unsafe type
783 assertions into derived types caused unexpected code
785 ** SCALE-FLOAT type deriver is less wrong.
786 ** type derivers for EXP, LOG and similar functions compute result
787 types for complex arguments better.
788 ** (MISC.563) CONJUGATE type deriver works for very restricted
790 ** out-of-line type testers for character strings are available.
791 ** EQUAL compiler transform understands specialness of objects
793 ** accessing double-floats stored on the stack now works on x86-64.
794 ** debugger internals could sometimes create invalid lispobjs,
795 resulting in GC crashes.
796 ** MISC.548: type check weakening can convert required type into
798 ** initialization forms for bindings are not in scope of free special
801 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
802 * incompatible change: thread support for non-NPTL systems has
803 been removed - locking is buggy and unreliable. A threaded
804 SBCL build will now warn at startup and refuse to create
805 new threads, unless futex support is detected in the kernel
806 * incompatible change: the top level REPL now has only an ABORT
807 restart associated with it, not TOPLEVEL and ABORT as it used to.
808 TOP and TOPLEVEL are now available as debugger commands for
809 returning to the top level.
810 * incompatible change: forms evaluated in the REPL now use the
811 global optimization policy.
812 * incompatible change: user- and system-initialization files are
813 no longer processed with LOAD, but by READ and EVAL; hence the
814 global optimization policy, startup package, readtable, etc,
816 * The .fasl file format number has been incremented because of
817 various incompatible changes.
818 * internal entry point details and argument counts no longer appear
819 in backtraces unless explicitly requested by setting
820 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
821 * built-in and standard functions no longer have names like "top
822 level local call to FOO".
823 * fixed bug 32: functions defined in non-null lexical environments
824 now have more legible printed representation
825 * fixed bug 33: functions defined in non-null lexical environemnts
826 are now more amenable to inspection by INSPECT.
827 * workaround for bug 354: XEPs no longer appear in backtraces unless
828 explicitly requested.
829 * fixed bug: receiving the signal which results from attempting to
830 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
831 SIGBUS on other *BSDs) on architectures where the C stack is also
832 the Lisp stack (x86 and x86-64) from foreign code no longer leads
833 to debugger confusion or wild instability. (reported by Cheuksan
835 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
836 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
837 (reported by Lutz Euler)
838 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
839 compiled code. (reported by Paul Dietz)
840 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
841 specialized parameter to a method to something that is not TYPEP
842 the specializer is now possible.
843 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
844 face of package deletion.
845 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
846 pathname. (reported by David Tolpin on c.l.l)
847 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
848 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
849 STRING-STREAM and FILE-STREAM, respectively.
850 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
851 than previously; in addition, its test suite is now run on build.
852 (thanks to Luke Gorrie)
853 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
854 * optimization: added a immediate representation for single-floats
856 * fixed some bugs revealed by Paul Dietz' test suite:
857 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
858 ** attempting to create a package with a colliding nickname causes
859 correctable errors to be signalled.
860 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
861 ** several x86-64 backend bugs related to sign-extension of immediate
864 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
865 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
866 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
868 * fixed loading of multiply forward-referenced layouts.
869 (thanks to Cheuksan Wang)
870 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
871 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
872 (see COMPILE-FILE documentation for details of :PRINT option)
873 * fixed bugs 19 and 317: fixed-format floating point printing is
874 more accurate. This also fixes a bug reported by Adam Warner
875 related to the ~@F format directive.
876 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
878 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
879 dispatch table if the from-char is a dispatch macro character.
880 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
881 by the wordsize no longer ignore the last word. (reported by Lutz
883 * fixed bug in type checking of dynamic-extent variables. (reported
885 * optimization: sequence traversal functions use their freedom to
886 coerce function designators to functions.
887 * optimization: code with many calls to CLOS methods specialized on
888 CLOS classes has had redundant type checks removed.
889 * optimization: added declarations to speed up operations that access
890 the internal character database (for example STRING-UPCASE)
891 * optimization: comparison operations between floats and sufficiently small
892 fixnums no longer create extra rationals
893 * fixed some bugs related to Unicode integration:
894 ** portions of multibyte characters at the end of buffers for
895 character-based file input are correctly transferred to the
896 start of the buffer at the next read.
897 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
898 passing it through to OPEN.
899 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
900 argument given to internal calls to OPEN.
901 ** the built-in comment readers (introduced by character sequences
902 ";" and "#|") are more forgiving to encoding errors; they will
903 STYLE-WARN and then attempt to resync the stream at a character
904 boundary. (thanks to Teemu Kalvas)
905 * fixed some bugs in the x86-64 port:
906 ** Negative short int return values from c-calls are sign-extended
908 ** The stack is aligned to 16-bytes for c-calls, as required by
909 the ABI. (thanks to Cheuksan Wang)
910 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
911 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
912 for enums. (thanks to Vincent Arkesteijn)
913 ** Multiple small optimizations and bugfixes for floating point
915 * fixed some bugs revealed by Paul Dietz' test suite:
916 ** Space, Tab, Linefeed, Return and Page have the invalid
917 secondary constituent character trait.
918 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
920 ** WITH-INPUT-FROM-STRING should only update the index place on
922 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
924 ** Bit-array operations (BIT-AND and similar) worked incorrectly
925 with one-dimensional arrays with fill pointers.
926 ** TYPE-OF failed on a complex with an integer realpart and a
928 ** compiler failure during type inference for the code of form
929 (IF (EQL X (THE ...)) ...) (MISC.535).
931 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
932 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
933 platform. The port supports 61-bit fixnums, large memory spaces
934 and reloading shared object files.
935 * enhancement: saving cores with foreign code loaded is now
936 supported on ppc/Darwin in addition to the previously supported
938 * enhancement: the statistical profiler now walks deeper into the
939 call stack for more meaningful call-graphs and accrued time
940 reports (x86/x86-64 only). It also now reports time spent in
942 * enhancement: it is now possible to trace most individual methods
943 of a generic function in addition to tracing the generic function
945 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
947 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
948 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
949 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
950 produces an error. (thanks to Vincent Arkesteijn)
951 * bug fix: NAMESTRING on pathnames with :WILD components in their
952 directories works correctly. (thanks to Artem V. Andreev)
953 * fixed bug 125: compiler preserves identity of closures. (reported
955 * bug fixed: functions with &REST arguments sometimes failed with
956 "Undefined function" when compiled with (DEBUG 3). (reported by
958 * bug fix: overflow during compiling of setting element of a bit
959 vector with constant index and value. (reported by Timmy Douglas)
960 * build fix: fixed the dependence on *LOAD-PATHNAME* and
961 *COMPILE-FILE-PATHNAME* being absolute pathnames.
962 * on x86 compiler partially supports stack allocation of dynamic-extent
964 * GO and RETURN-FROM do not check the extent of their exit points
965 when compiled with SAFETY 0.
966 * fixed some bugs related to Unicode integration:
967 ** encoding and decoding errors are now much more robustly
968 handled; it should now be possible to recover even from invalid
969 input or output to the terminal. (thanks to Teemu Kalvas)
970 ** provided a first cut at implementing STRING-TO-OCTETS and
971 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
972 ** altered the SB-MD5 contributed module slightly, changing the
973 interface just enough for it to be supportable for builds where
974 lisp characters are not eight bits.
975 * fixed some bugs revealed by Paul Dietz' test suite:
976 ** the FORMATTER-generated functions for ~V[ conditionals require
977 the correct number of arguments.
978 ** READ-FROM-STRING returns the mandated second value when applied
979 to displaced strings.
980 ** the #\Rubout and #\Backspace characters are treated as invalid
981 constituent characters by the tokenizer.
983 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
984 * new feature: reloading changed shared object files with
985 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
986 * new feature: references to foreign variables and functions
987 can now be compiled and loaded before the corresponding shared
988 object file is loaded, as long as the foreign definitions are
989 available at runtime.
990 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
991 supported. (thanks to Dan Debertin)
992 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
993 just keywords. (thanks to Vincent Arkesteijn)
994 * fixed bug #331: structure-class instances corresponding to
995 DEFSTRUCT forms are now created eagerly.
996 * fixed bug #345: backtraces from calls to undefined functions work
997 on x86 as well. Related bug #61 is now also partially fixed on x86
998 (backtraces from throws to unknown catch tags.)
999 * bug fix: lambda-list parsing is now stricter vrt. order and number
1000 of lambda-list keywords.
1001 * bug fix: as specified by AMOP, an error is signalled if a
1002 class-option appears multiple times in a DEFCLASS form. (reported
1004 * bug fix: RANDOM can be compiled when the compiler derives the type
1005 of its numeric argument as a disjoint set of small integers.
1006 (reported by Paul Dietz)
1007 * bug fix: starting a core saved with shared objects loaded when
1008 those objects are not available no longer causes threaded SBCL to
1009 hang. (reported by Sean Ross)
1010 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1012 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1013 argument, which must always be NIL. (reported by Kalle Niemitalo)
1014 * bug fix: printing 1.0d+23 no longer results in an error.
1015 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1016 * bug fix: structure slot setters preserve evaluation order. (thanks
1018 * fixed some bugs related to Unicode integration:
1019 ** RUN-PROGRAM can allow its child to take input from a Lisp
1020 stream. (reported by Stefan Scholl)
1021 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1022 locales. (reported by Ken Causey)
1023 * fixed some bugs revealed by Paul Dietz' test suite:
1024 ** INCF, DECF and REMF evaluate their place form as specified in
1026 ** FORMATTER expands ~{ ~} iteration directives with V or #
1027 parameters correctly.
1028 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1029 consequent uses no arguments correctly.
1030 ** the system has a partial understanding of the (COMPLEX RATIO)
1032 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1035 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1036 * new feature: a build-time option (controlled by the :SB-UNICODE
1037 keyword feature, enabled by default) for building the system with
1038 support for the entire 21-bit character space defined by the
1040 * new feature: the system now has rudimentary external-format
1041 support; the primary user-visible change at this time is that
1042 characters with the high bit set (such as lower-case-e-acute) will
1043 print correctly to a terminal in a UTF-8 environment.
1044 * minor incompatible change: BASE-CHAR no longer names a class;
1045 however, CHARACTER continues to do so, as required by ANSI.
1046 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1047 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1048 has been moved to the SB-EXT package (temporarily re-exported from
1050 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1051 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1053 * fixed bug #351: better error-handlind and reporting for malformed
1055 * fixed bug #350: bignum-printing is now more memory-efficient,
1056 allowing printing of very large bignums, eg. (expt 2 10000000).
1057 (reported by Bruno Haible)
1058 * fixed bug #302: better primitive-type selection for intersection
1060 * fixed bug #308: non-graphic characters now all have names, as
1061 required. (reported by Bruno Haible)
1062 * bug fix: redefining a class with different superclasses now correctly
1063 removes it from the direct-subclasses of its previous superclasses.
1064 (reported by David Morse)
1065 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1066 new value now works. (reported by Bruno Haible)
1067 * bug fix: correct canonicalization of multiple non-standard slot
1068 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1069 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1070 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1071 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1072 now exists, an signals an error.
1073 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1074 during macroexpansion for non-iteration variables as well. (reported
1075 by Bruno Haible for CMUCL)
1076 * bug fix: Cyclic structures and unprintable objects in compiler
1077 messages no longer cause errors. (reported by Bruno Haible)
1078 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1079 and READ-FROM-STRING all now return a primary value of NIL if
1080 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1081 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1082 (reported by Bruno Haible for CMUCL)
1083 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1084 do not designate a condition. (reported by Bruno Haible for
1086 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1087 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1088 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1089 permitting resolution in favour of any of the conflicting symbols.
1090 (reported by Bruno Haible for CMUCL)
1091 * bug fix: EQUAL compiler optimizations is less aggressive on
1092 strings which can potentially compare true despite having distinct
1093 specialized array element types.
1094 * bug fix: unit enumerations can be defined without dividing by
1095 zero. (thanks to Vincent Arkesteijn)
1096 * FORMAT compile-time argument count checking has been enhanced.
1097 (report from Bruno Haible for CMUCL)
1098 * a partial workaround for the bug 262: the compiler does not try to
1099 inline-expand a local function doing RETURN-FROM from a deleted
1100 BLOCK. (thanks to Peter Denno for the bug report and to David
1101 Wragg for the simple test case)
1102 * fixed some bugs revealed by Paul Dietz' test suite:
1103 ** RENAME-PACKAGE allows all package designators as new package
1105 ** constraint propagation and lambda variable substitution are
1106 more cautious in dealing with partially deleted code.
1107 ** compiler sometimes lost reoptimization passes.
1108 ** CERROR, given a condition as condition designator, passes its
1109 remaining arguments to the continue format control without
1111 ** Case-altering FORMAT directives work correctly on non-ASCII
1113 ** The REAL type specifier handles bounds outside the floating
1114 point ranges without signalling FLOATING-POINT-OVERFLOW.
1115 ** Functions with IR1-transformations can create intercomponent
1116 references to global functions.
1117 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1119 ** FORMAT ~R treats a nil value for its first parameter correctly.
1121 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1122 * enhancement: saving cores with foreign code loaded is now
1123 supported on x86/NetBSD and sparc/Linux in addition to the previously
1124 supported platforms.
1125 * bug fix: on some platforms repeated installations caused multiple
1126 copies of HTML documentation to be installed -- should not happen
1127 any more. (reported by Stefan Scholl)
1128 * bug fix: parsing self-recursive alien record types multiple times
1129 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1130 original patch by Helmut Eller for CMUCL)
1131 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1132 (thanks to Richard Kreuter)
1133 * bug fix: defining classes whose accessors are methods on existing
1134 generic functions in other (locked) packages no longer signals
1135 bogus package lock violations. (reported by François-René Rideau)
1136 * bug fix: special variables as DEFMETHOD parameters no longer have
1137 associated bogus type declarations. (reported by David Wragg and
1139 * bug fix: read-write consistency on streams of element-type
1140 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1141 * bug fix: redefiniton of the only method of a generic function with
1142 no DEFGENERIC no longer emits a full WARNING. In addition,
1143 redefinition of generic functions with no DEFGENERIC to an
1144 incompatible lambda list now signals an error. (thanks to Zach
1146 * bug fix: DEFGENERIC now works even when there's a function of the
1147 same name in an enclosing lexical environment. (thanks to Zach
1149 * fixed compiler failure, caused by instrumenting code during
1150 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1151 * optimization: added loop analysis and improved register allocation
1152 * fixed some bugs revealed by Paul Dietz' test suite:
1153 ** POSITION on displaced vectors with non-zero displacement
1154 returns the right answer.
1155 ** (SIMPLE-STRING) is a valid type specifier for sequence
1157 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1159 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1160 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1162 ** The justification version of the FORMAT ~< directive treats
1163 non-zero minpad parameter correctly.
1165 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1166 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1167 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1168 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1169 the supported interface.
1170 * new feature: Single-stepping of code compiled with DEBUG 2 or
1171 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1172 * new feature: saving cores with foreign code loaded is now
1173 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1174 Timothy Moore's work for CMUCL)
1175 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1176 parameters to * instead of NIL if no initform is supplied.
1177 (reported by Johan Bockgaard)
1178 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1179 correctly when FUNCALL appears as the car of the form. Note:
1180 despite this FUNCALL forms are not currently subject to
1181 compiler-macro expansion. (port of Raymond Toy's fix for the
1182 same from CMUCL, reported by Johan Bockgaard)
1183 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1184 (thanks for Teemu Kalvas)
1185 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1186 case instead of terminating the iteration (thanks for Julian
1187 Squires, Sean Champ and Raymond Toy)
1188 * bug fix: incorrect expansion of defgeneric that caused a style
1189 warning. (thanks for Zach Beane)
1190 * bug fix: slot accessor effective method computation works properly
1191 for classes with multiple non-standard applicable methods on
1192 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1193 * on x86 compiler supports stack allocation of results of LIST and
1194 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1195 CMUCL implementation by Gerd Moellmann)
1196 * fixed some bugs revealed by Paul Dietz' test suite:
1197 ** FORMAT strings with both the ~<~:;~> form of the justification
1198 directive and pretty-printing directives cause an error.
1200 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1201 * incompatible change: the internal functions
1202 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1203 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1204 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1205 instead of the old functions.
1206 * new feature: on platforms where "dladdr" is available foreign
1207 function names now appear in backtraces. (based on Helmut Eller's
1209 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1210 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1212 * documentation: ASDF manual is now distributed with SBCL.
1213 * bug fix: SBCL can now load its contributed modules with REQUIRE
1214 even if the system-provided entries have been removed from
1215 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1217 * bug fix: backtraces involving undefined functions or assembly
1218 routines are more informative. (thanks to Brian Downing)
1219 * bug fix: mutually referent alien structures now work correctly.
1220 (reported by Rick Taube)
1221 * bug fix: structures defined by WITH-ALIEN can be referred to
1222 within other definitions in the same WITH-ALIEN.
1223 * bug fix: division operators (MOD, TRUNCATE and the like) with
1224 constant zero divisors and integer dividends no longer generate
1226 * bug fix: provide default methods for INPUT-STREAM-P and
1227 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1228 * bug fix: improve the detection and resolution of MOP metacycles
1229 (where effective method computation depends on the generic function
1230 having its effective method computed). (reported by Bruno Haible)
1231 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1232 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1233 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1234 * bug fix: pathnames with relative directory components can be
1235 represented relative to default pathnames.
1236 * optimization: in taking the GCD of bignums, reduce the two bignums
1237 to approximately the same size (using Euclid's algorithm) before
1238 applying the more sophisticated binary GCD. (thanks to Juho
1240 * optimization: COUNT on bitvectors now operates word-at-a-time.
1241 * optimization: ASH with a positive, but not necessarily constant,
1242 (leftwards) shift, when in a modular context, is compiled to a
1244 * fixed some bugs revealed by Paul Dietz' test suite:
1245 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1246 if the corresponding argument is NIL.
1247 ** FORMAT directives accepting a minpad parameter treat negative
1249 ** literal commas as character parameters to FORMAT directives are
1251 ** literal spaces directly after ~<Newline> directives within a
1252 format-logical-block (~:< ~@:>) do not induce :FILL-style
1253 conditional newlines.
1254 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1255 as specified: it no longer includes conditional newlines).
1256 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1258 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1259 :PER-LINE-PREFIX argument does not evaluate to a string.
1261 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1262 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1263 the manual for details; for now, package locks can be disabled by
1264 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1265 if no major problems are found then it is likely that they will be
1266 compiled in unconditionally.
1267 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1268 unsupported operators on all platforms. To load a shared library
1269 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1270 object file, link it into a shared library outside of SBCL and
1271 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1273 * bug workaround: ROOM T and the GC were not working together
1274 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1275 reporting facility aren't preserved. That reporting has been
1276 disabled, so now until and unless someone figures out how to make it
1277 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1278 * minor incompatible change: as threatened around sbcl-0.8.0, the
1279 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1280 The symbols are also exported from SB-PCL for backwards
1281 compatibility, but more so than before SB-PCL should be treated as
1282 an implementation-internal package.
1283 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1285 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1286 It is known as of this release not to work on the Alpha, however.
1287 * fixed bug #167: errors signalled due to illegal syntax in method
1288 bodies are now more legible.
1289 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1290 designators and can hence be used with TYPEP.
1291 * fixed bug #333: CHECK-TYPE now ensures that the type error
1292 signalled, if any, has the right object to be accessed by
1293 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1294 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1295 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1297 * fixed bug #334: programmatic addition of slots using specialized
1298 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1299 and :ALLOCATION :CLASS slots.
1300 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1301 float exponents. (rereported by Peter Seibel)
1302 * fixed a bug: #\Space (and other whitespace characters) are no
1303 longer considered to be macro characters in standard syntax by
1304 GET-MACRO-CHARACTER.
1305 * fixed bug: initialization of condition class metaobjects no longer
1306 causes an instance of the condition to be created. (reported by
1308 * fixed bug: it is now possible to have slots such that
1309 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1310 description is neither :INSTANCE nor :CLASS.
1311 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1312 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1313 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1314 non-standard SLOT-DEFINITION-ALLOCATION values.
1315 * fixed bugs: various race conditions handling exiting threads.
1316 CL-PPCRE's thread torture test now passes.
1317 * fixed arguably-a-bug: GC time proportional to number of threads in
1318 system even when most of them are idle
1319 * optimization: improved performance of BIT and SBIT on bit-vectors.
1320 * .fasl file incompatibility: The fasl file version number has
1321 been incremented because of changes associated with package locks.
1323 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1324 * minor incompatible change: the system no longer provides
1325 optimization hints (conditions which are TYPEP
1326 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1327 mode; these hints are still emitted when higher SPEED optimization
1329 * new contrib module: a sampling profiler (profiling by statistical
1330 sampling, rather than by instrumenting functions) is available as
1331 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1332 * the behaviour of the standard function ED is now customizeable by
1333 third parties through a hook variable: see ED's documentation
1334 string for information on the protocol.
1335 * the compiler no longer emits efficiency notes for (FUNCALL X)
1336 when the type of X is uncertain under default optimization
1338 * fixed bug 276: mutating a binding of a specialized parameter to a
1339 method to something that is not TYPEP the specializer is now
1341 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1342 exhibit the required behaviour on the x86 platform. (thanks to
1343 Peter van Eynde, Eric Marsden and Bruno Haible)
1344 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1345 even for difficult arguments. (reported by Peter Graves)
1346 * fixed bug 141a: the backquote printer now descends quoted
1348 * fixed another bug in backquote printing: no more destructive
1349 modification of the form's list structure. (reported by Brian
1351 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1352 move between its address being taken and the call to
1353 interrupt_thread, fixing a crashing race condition.
1354 * the SB-POSIX contrib implementation has been adjusted so that it
1355 no longer exhibits ridiculously poor performance when constructing
1356 instances corresponding to C structs.
1358 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1359 * minor incompatible change: the sb-grovel contrib now treats C
1360 structures as alien (in the sense of SB-ALIEN) objects rather than
1361 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1362 has implications for memory management of client code
1363 (sb-grovel-returned objects must now be manually managed) and for
1364 type safety (alien objects now have full types).
1365 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1366 used to control emission of compiler diagnostics, rather than the
1367 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1368 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1369 quality should be considered deprecated.
1370 * install.sh now installs the user manual as well
1371 * (not quite a new documentable feature, but worth considering in
1372 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1373 beginnings of a semantically meaningful condition hierarchy is
1374 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1376 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1377 designator as the defaults argument.
1378 * fixed bug: Displaced arrays whose displaced-to array has become
1379 too small now cause ARRAY-DIMENSION to signal an error, providing
1380 for safer bounds-checking. (reported by Bruno Haible)
1381 * fixed bug: DEFCLASS slot definitions with identical :READER and
1382 :WRITER names now signal a reasonable error. (reported by Thomas
1384 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1386 * fixed bug: Invalid slot specification errors now print correctly.
1387 (thanks to Zach Beane)
1388 * fixed bug 320: Shared to local slot value transfers in class
1389 redefinitions now happen corrently from superclasses as
1390 well. (reported by Bruno Haible)
1391 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1393 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1394 improper lists correctly. (reported by Bruno Haible)
1395 * fixed bug 313: source-transform for <fun-name> was erroneously
1396 applied to a call of a value of a variable with name <fun-name>.
1397 (reported by Antonio Menezes Leitao)
1398 * fixed bug 307: The obsolete instance protocol ensures that
1399 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1400 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1401 remove dead unknown-values globs from the middle of the stack.
1402 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1403 easier to resume long computations after using *BREAK-ON-SIGNALS*
1404 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1405 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1406 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1407 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1408 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1409 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1411 * fixed a (fairly theoretical) bug in string printing: if
1412 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1413 does not have array-element-type equal to the most general string
1415 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1416 function name. (thanks to Nikodemus Siivola)
1417 * fixed bug: compile-time format string checker failed on
1418 non-closed ~{. (reported by Thomas F Burdick)
1419 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1420 don't warn on legal loop code involving more than one aggregate
1421 boolean. (thanks to Nikodemus Siivola)
1422 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1423 in keyword position to MAKE-PACKAGE was not being reported as
1425 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1426 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1428 * fixed bugs 280 and 312: the checking for multiple definitions in a
1429 file is less likely to become confused by uses of inline
1431 * fixed bug: the #S reader macro performs the keyword coercion
1432 specified for slot names. (reported by Kalle Niemitalo)
1433 * fixed bug: lambda lists may contain symbols whose names start with
1434 & but are not lambda-list-keywords; their occurrence triggers a
1436 * fixed bug 321: define-method-combination argument lambda lists do
1437 not cause invalid code to be generated when &optional or &aux
1438 variables have default values. (reported by Bruno Haible)
1439 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1440 have CLOS classes; this appears also to have fixed reported
1441 instability in stack exhaustion detection.
1442 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1443 MUFFLE-WARNING when no associated restart is present is now
1445 * optimization: rearranged the expansion of various defining macros
1446 so that each expands into only one top-level form in a
1447 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1449 * optimization: used a previously little-used slot in symbols to
1450 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1452 * fixed some bugs revealed by Paul Dietz' test suite:
1453 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1455 ** Fixed an optimization bug related to inheritance of initforms
1456 from local to shared slots.
1457 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1458 ** CAST optimizer forgot to flush argument derived type.
1459 ** print/read consistency on floats is now orders of magnitude
1460 more likely. (thanks also to Bruno Haible for a similar report
1462 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1463 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1464 for objects of type REAL. Make it so.
1465 ** SXHASH is specified (infelicitously) to respect similarity,
1466 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1467 it so. (thanks to Markus Ziegler)
1468 ** on the Alpha, the compiler succeeds in compiling functions
1469 returning a known number of arguments greater than 63.
1470 ** fixed handling of invalid NIL arguments in keyword position
1472 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1474 ** provided a readably-printable representation for RANDOM-STATE
1476 ** ensured that pathnames, where they have a namestring, always
1477 print using #P"..." syntax.
1479 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1480 * Support for the forthcoming 2.0 version of the NetBSD kernel
1481 running on x86 hardware has been added. (thanks to Perry
1482 E. Metzger most immediately, and others for their past work)
1483 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1484 current release version; SBCL's OpenBSD support had been broken
1485 since about the time of OpenBSD's switch to ELF binary format.)
1486 * [placeholder for DX summary]
1487 ** user code with &REST lists declared dynamic-extent, under high
1488 speed or space and low safety and debug optimization policy.
1489 * The manual has been converted to Texinfo format and the debugger
1490 chapter from the cmucl manual has been added.
1491 * A facility has been added to extract documentation strings from
1492 sbcl and store them as Texinfo-formatted snippets for inclusion in
1493 the manual (via Texinfo's @include directive)
1494 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1495 the test case to Dave Roberts)
1496 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1497 pointers. (reported by Sean Ross)
1498 * bug fix: PROFILE output is printed nicely even for large numerical
1499 values. (thanks to Zach Beane)
1500 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1501 greater than 32 handle EOF correctly.
1502 * bug fix: on X86 an immediate argument of the IMUL instruction is
1503 correctly printed in disassembly. (thanks to Lutz Euler)
1504 * bug fix: class slots in redefined classes preserve their old
1505 values. (thanks to Bruno Haible and Nikodemus Siivola)
1506 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1507 succeeds. (reported by Marco Baringer)
1508 * fixed some bugs revealed by Paul Dietz' test suite:
1509 ** READ-SEQUENCE now works on ECHO-STREAMs.
1510 ** RATIONALIZE works more according to its specification. (thanks
1513 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1514 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1515 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1516 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1517 should matter to you only if you rebind the printer control
1518 variables and then find you want different bindings in the
1519 debugger than in the ordinary execution of your program.)
1520 * The runtime build system has been tweaked to support building
1521 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1522 assembler and linker. (thanks to Nikodemus Siivola)
1523 * Unbound, undefined, undeclared variables now trigger full
1524 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1525 more often programmer error than deliberate exploitation of undefined
1527 * optimization: the hash algorithm for strings has changed to one
1528 that is less vulnerable to spurious collisions. (thanks to Juho
1530 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1531 needless bounds checking. (thanks to Juho Snellman)
1532 * optimization: implemented multiplication as a modular
1533 (UNSIGNED-BYTE 32) operation on the PPC backend.
1534 * fixed some bugs revealed by Paul Dietz' test suite:
1535 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1537 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1538 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1539 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1541 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1543 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1545 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1546 their output stream on EOF from read.
1547 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1548 have been read to end-of-file.
1549 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1551 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1552 description of determination of which consecutive characters
1554 ** Printing the "Space" character with escaping on now yields "#\\ ",
1555 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1556 ** Reading floating-point numbers with *READ-BASE* set to a number
1557 less than 10 works correctly.
1558 ** Reading floating-point numbers with *READ-BASE* set to a number
1559 more than 10 works correctly.
1560 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1561 the readtable currently in effect.
1563 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1564 * minor incompatible change: parsing of namestrings on a physical
1565 (Unix) host has changed; numbers after the final #\. in a
1566 namestring are no longer interpreted as a version field. This is
1567 intented to be largely invisible to the user, except that the
1568 meaning of the namestring "*.*.*" has changed: it now refers to a
1569 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1570 should usually be replaced by
1571 (make-pathname :name :wild :type :wild :version :wild)
1572 with the added benefit that this is more likely to be portable.
1573 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1574 option to OPEN now signals an error if the file being opened
1575 exists; this may have an impact on existing code.
1576 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1577 signals received, on the PowerPC platforms (both Linux and
1578 Darwin). (thanks to Pierre Mai for pointing out the location of
1580 * several fixes on OS X: The system now builds and runs cleanly on
1581 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1582 (thanks to Brian Mastenbrook)
1583 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1584 second-resolution: integer multiples of 1/3600 between -24 and 24.
1585 (thanks to Vincent Arkesteijn)
1586 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1587 type when called with 1 argument; PEEK-CHAR checked type of
1588 PEEK-TYPE only after having read first character from a
1589 stream. (reported by Peter Graves)
1590 * bug fix: the garbage collector now has much better locality
1591 behaviour, and in particular no longer treats all memory as being
1592 exhausted when many small objects point to each other in a deeply
1594 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1595 recognized as being TYPEP their class.
1596 * bug fix: the PUSHNEW documentation string has been corrected.
1597 (thanks to Vincent Arkesteijn)
1598 * bug fix: defaulting of the value for the last of an atypically
1599 large number of multiple values being bound was not being
1600 performed correctly on the Alpha or PPC platforms
1601 * optimization: implemented multiplication as a modular
1602 (UNSIGNED-BYTE 32) operation on the x86 backend.
1603 * optimization: SEARCH on simple-base-strings can now be open-coded.
1604 (see also contrib/compiler-extras.lisp for inspiration for
1605 teaching the compiler about the Boyer-Moore algorithm).
1606 * value, returned by MAX (and MIN) called with several EQUALP, but
1607 not EQL, arguments now does not depend on compiler settings.
1608 * fixed some bugs revealed by Paul Dietz' test suite:
1609 ** in stack analysis liveness information is propagated from
1610 non-local entry points.
1611 ** pathwise CAST removing failed when the CAST node did not start
1613 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1614 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1616 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1617 host is already defined.
1618 ** RENAME-FILE works on streams instead of signalling an internal
1620 ** PEEK-CHAR uses the current readtable when determining whether
1621 or not a character is whitespace.
1622 ** MERGE-PATHNAMES handles the case when the pathname does not
1623 specify a name while the default-pathname specifies a version.
1624 ** Pathnames now stand a better chance of respecting print/read
1626 ** Attempting to use standardized file system operators with a
1627 pathname with invalid :DIRECTORY components signals a
1629 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1631 ** DIRECTORY on logical pathnames is more correct.
1632 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1633 signal a TYPE-ERROR if their argument is not a stream.
1634 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1635 designator argument does not designate a stream.
1636 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1637 examining the synonym.
1638 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1640 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1641 element-type larger than ([UN]SIGNED-BYTE 32).
1643 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1644 * When built with the :SB-FUTEX feature, threaded builds now take
1645 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1646 for faster/more reliable mutex and condition variable support.
1647 * Incompatible change (but one you probably shouldn't have been using
1648 anyway): the interface and code for arbitrating between multiple
1649 threads in the same user session has been redesigned.
1650 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1651 error when called without an explicit environment argument.
1652 (thanks to Nikodemus Siivola)
1653 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1654 confused about their position. (thanks to Adam Warner and Gerd
1656 * bug fix: Pretty printing backquoted forms with unquotations in the
1657 argument list position of various code constructs such as LAMBDA
1658 now works correctly. (reported by Paul Dietz)
1659 * bug fix: Pretty printing unquotations no longer loses all
1660 stream position information.
1661 * optimization: performance of string output streams is now less
1662 poor for multiple small sequence writes.
1663 * optimization: performance of CSUBTYPEP in the presence of complex
1664 expressions involving CONS and NOT many times has been improved.
1665 (reported by Paul Dietz)
1666 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1668 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1669 streams for the REPL, for the debugger, and so on. (thanks to
1671 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1672 * fixed some bugs revealed by Paul Dietz' test suite:
1673 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1674 is ignored if it is too small, rather than propagating through
1675 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1676 ** extremely complex negations of CONS types were not being
1677 sufficiently canonicalized, leading to inconsistencies in
1679 ** VALUES tranformer lost derived type.
1681 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1682 * fixed a bootstrapping bug: the build process no longer assumes
1683 that the various BOOLE-related constants have the same value in
1684 host and target lisps. (noted by Paul Dietz' test suite on an
1685 SBCL binary built from CLISP)
1686 * The system can now be dynamically linked on the MIPS platform,
1687 which enables dynamic loading of foreign code from Lisp. (thanks
1688 to Ralf Baechle for discussions on the MIPS ABI)
1689 * The system now records debugging information for its own source
1690 files in a filesystem-position-independent manner, relative to
1691 the "SYS" logical host.
1692 * fixed a compiler bug: MV-LET convertion did not check references
1693 to the "max args" entry point. (reported by Brian Downing)
1694 * tweaked disassembly notes to be less confident about proclaiming
1695 some instruction as an LRA. (thanks to Brian Downing)
1696 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1697 now each have their own history, command character, and other
1698 characteristics. (thanks to David Lichteblau)
1699 * fixed some bugs revealed by Paul Dietz' test suite:
1700 ** compiler failure in compiling LOGAND expressions including a
1702 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1703 shift greater than 32.
1704 ** FLUSH-DEST did not mark blocks for type check regeneration.
1705 ** HANDLER-CASE failed to accept declarations in handler clauses
1706 in some circumstances.
1708 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1709 * New code in contrib/sb-introspect (still probably not entirely
1710 stable yet) provides some support for smart Lisp development
1711 environments like SLIME.
1712 * The conditions signalled for errors occurring when loading .fasl
1713 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1714 in a way which should help ASDF recover gracefully.
1715 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1716 stuff has been cleaned up. If you code contrib/ stuff, this might
1717 affect you, and you can look at contrib/README, contrib/STANDARDS,
1718 and/or the 0.8.4.27 diff to check.
1719 * In full calls the compiler now does not generate checks for declared
1720 argument types for all arguments.
1721 * various threading fixes
1722 ** and some experimental patches which didn't make it into
1723 the main tree for this release, but which are shipped in
1724 contrib/experimental-thread.patch as a possible fix for some
1725 failures (deadlock, spinning...) in GC-intensive multithreaded
1727 * fixed PPC build problem (source code incompatibility of different
1728 library versions): added offsetof() hackery which attempts to divine
1729 where glibc maintainers put uc_mcontext today
1730 * fixed bug 282: compiler does not trust type assertions while passing
1731 arguments to a full call.
1732 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1733 &OPTIONAL VALUES type parameter.
1734 * fix bug 214: algorithm for noting rejected templates is now more
1735 similar to that of template seletion. (also reported by rydis on
1737 * fixed bug 141b: printing backquoted information readably and prettily
1738 inserts a space where necessary.
1739 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1740 (CHARACTER 10) are now reported as errors, rather than propagated
1741 as unknown types. (reported by piso on #lisp)
1742 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1743 with values NIL and :ERROR. (thanks to Milan Zamazal)
1744 * fixed bug 191c: CLOS now does proper keyword argument checking as
1745 described in CLHS 7.6.5 and 7.6.5.1.
1746 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1747 longer raise an error; further, using a list as a for-as-arithmetic
1748 counter now raises a meaningful error.
1749 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1750 now understood by sequence creation functions such as MAKE-SEQUENCE
1752 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1753 a STRING-INPUT-STREAM.
1754 * compiler enhancement: SIGNUM is now better able to derive the type
1756 * type declarations inside WITH-SLOTS are checked. (reported by
1758 * fixed some bugs revealed by Paul Dietz' test suite:
1759 ** incorrect optimization of TRUNCATE for a positive first
1760 argument and negative second.
1761 ** compiler failure in let-convertion during flushing dead code.
1762 ** compiler failure while deriving type of TRUNCATE on an
1763 interval, containing 0.
1764 ** ASH of a negative bignum by a negative bignum count now returns
1766 ** intersection of CONS types now canonicalizes properly, fixing
1767 inconsistencies in SUBTYPEP.
1769 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1770 * incompatible change: The --disable-debugger command line
1771 option now clobbers the debugger at a more fundamental
1772 level, by redefining #'INVOKE-DEBUGGER instead of by
1773 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1774 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1775 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1776 enter the debugger REPL and then suffer recursive errors
1777 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1778 while under the new system, BREAK in --disable-debugger mode
1779 terminates the system just as an unhandled error would.
1780 * fixed compiler performance when processing loops with a step >1;
1781 * bug fix: DOCUMENTATION now retrieves generic function
1782 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1783 support has been systematized, and now supports the methods
1784 specified by ANSI, along with a default method and a method for
1785 slot documentation. (reported by Nathan Froyd)
1786 * bug fix: effective methods associated with a generic function are
1787 no longer cached over a change of that generic function's method
1788 combination. (reported by Andreas Fuchs)
1789 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1790 names a non-existent directory. (thanks to Andreas Fuchs)
1791 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1792 the PPC platform, lead to stack corruption; this has been fixed.
1793 (reported by Rainer Joswig)
1794 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1795 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1796 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1797 arithmetic in general, is now much more reliable on the PPC
1799 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1800 platform now returns the right answer.
1801 * optimization: restored some effective method precomputation in
1802 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1803 precomputation is now tunable.
1804 * optimization: compiler-internal data structure use has been
1805 reviewed, and changes have been made that should improve the
1806 performance of the compiler by about 20%.
1807 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1808 simple-base-strings and simple-bit-vectors is improved.
1809 * optimization: the optimization of 32-bit logical and arithmetic
1810 functions introduced in version 0.8.3 on the x86 has been
1811 implemented on the mips, ppc and sparc platforms; an
1812 implementation of the same facility, but for 64-bit arithmetic,
1813 has been added for the alpha.
1814 * microoptimization: the compiler is better able to make use of the
1815 x86 LEA instruction for multiplication by constants.
1816 * bug fix: in some situations compiler did not report usage of
1817 generic arithmetic in (SPEED 3) policy.
1818 * bug 145b fix: compiler used wrong type specifier while converting
1819 MEMBER-types to numeric.
1820 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1822 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1823 index argument now works properly on the Alpha platform.
1824 * bug fix: floating point exception treatment on the Alpha platform
1826 * bug fix: FILE-POSITION works much better on string input and
1827 output streams. (thanks to Nikodemus Siivola)
1828 * bug fix: many threading/garbage collection symptoms sorted.
1829 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1830 might be pseudo-atomic.
1831 * internal change: Stopping for GC is now done with signals not
1832 ptrace. GC is now done in whichever thread wanted it, instead of
1834 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1836 * bug fix: result form in DO is not contained in the implicit
1838 * incompatible change: ICR structure is changed; the value part of
1839 CONTINUATION is now called LVAR; corresponding functions are
1840 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1841 * added type deriver for ISQRT (thanks to Robert E. Brown).
1842 * bug fix: better support for loading from the command line when an
1843 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1845 * fixed some bugs revealed by Paul Dietz' test suite:
1846 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1847 ** ROUND and FROUND now give the right answer when given very
1848 small float arguments.
1849 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1851 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1852 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1853 ** LCM should return a non-negative integer.
1854 ** PARSE-INTEGER returned the index of a terminator instead of the
1855 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1856 ** PARSE-INTEGER returned an incorrect index being applied to a
1858 ** LCM with two arguments of 0 returns 0 rather than signalling
1860 ** unsigned addition of a 32-bit constant with the high bit set no
1861 longer causes an internal compiler error on the x86.
1862 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1863 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1864 with negative last argument.
1865 ** byte specifiers with zero size and position no longer cause
1866 an error during type derivation.
1867 ** bignum multiplication on the Alpha platform now returns the
1869 * porting: The system now builds on SuSE AMD64, although it still
1870 generates a 32-bit binary.
1871 * .fasl file incompatibility: The fasl file version number has
1872 been incremented (because of the changes to internal compiler
1873 data structures referred to above).
1875 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1876 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1877 more accurately, on the Darwin kernel running on PowerPC hardware.
1878 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1879 * Compiler code deletion notes now signal a condition of type
1880 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1881 an associated MUFFLE-WARNING restart.
1882 * The compiler now performs limited argument count validation of
1883 constant format strings in FORMAT, and where appropriate in ERROR,
1884 CERROR and WARN. (thanks to Gerd Moellmann)
1885 * New ASDF-INSTALL contrib can be used for automatic download and
1886 installation of third-party Lisp code from CCLAN or other sites
1888 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1889 which forces another thread to execute a function supplied by the
1891 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1892 now accept and act upon their :ELEMENT-TYPE keyword argument.
1893 (reported by Martin Atzmueller, Edi Weitz)
1894 * bug fix: FILE-POSITION now accepts position designators up to
1895 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1896 is the greater. (thanks to Patrik Nordebo)
1897 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1898 Kalle Olavi Niemitalo)
1899 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1900 printable. (reported by Eric Marsden)
1901 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1902 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1903 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1904 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1905 (thanks to Stig Sandoe)
1906 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1907 UNREAD-CHAR now correctly includes the unread character in the
1908 target sequence. (thanks to Gerd Moellmann)
1909 * bug fix in threaded builds: the system can now be suspended and
1910 resumed by shell job control with minimal disruption.
1911 * bug fixes in times and timezones >2038AD
1912 * better handling of "where is GNU make?" problem in build scripts
1913 (thanks to Nikodemus Siivola)
1914 * new optimization: inside a named function any reference to a
1915 function with the same name is considered to be a self-reference;
1916 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1917 optimization quality.
1918 * new optimization on x86: logical functions and + now have
1919 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1920 used when the result is truncated to 32 bits.
1921 * VALUES declaration is partially enabled.
1922 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1923 * fixed some bugs revealed by Paul Dietz' test suite:
1924 ** The system now obeys the constraint imposed by
1925 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1926 types form a lattice under type intersection.
1927 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1928 ** ASSOC now ignores NIL elements in an alist.
1929 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1930 and (1+ MOST-POSITIVE-FIXNUM) answers.
1931 ** The addition of a method with invalid qualifiers to a generic
1932 function does not cause an error to be signalled immediately;
1933 a warning is signalled, and the error is generated only on
1934 calling the generic function.
1935 * changed .fasl file version number, in part to add type codes for
1936 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1937 obscure ANSI requirements
1939 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1940 * fixed bug 148: failure to inline-expand a local function left
1941 garbage, confusing the compiler.
1942 * fixed bugs 3cd: structure slot readers perform type check if the
1943 slot can have an invalid value (i.e. it is either not initialized
1944 or can be written with a less specific slot writer).
1945 * bug fix: the compiler now traps array references to elements off
1946 the end of an array; previously, the bounds checking in some
1947 circumstances could go off-by-one.
1948 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1950 * type declarations for array element types now obey the description
1951 on the CLHS page "Declaration TYPE", as per discussions on
1952 sbcl-help around 2003-05-08. This means that a declaration
1953 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1954 declaration, all references to BAR will be asserted or assumed
1955 (with THE, so dependent on compiler policy) to involve objects of
1956 type FOO. Note that no such declaration is implied in
1957 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1958 * declared types of functions from the "Conditions"
1959 chapter. (reported by Paul Dietz)
1960 * bug fix: CERROR accepts a function as its first argument.
1961 * bug fix: NTH an NTHCDR accept a bignum as index
1962 arguments. (reported by Adam Warner)
1963 * optimization: character compare routines now optimize comparing
1964 against a constant character. (reported by Gilbert Baumann)
1965 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1966 argument now works properly on the MIPS platform.
1967 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1968 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1969 declared to have a functional type, does not cause an error
1971 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1972 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1973 * fixed bug: if last continuation of a deleted block has a
1974 destination, this destination should be deleted too. (reported by
1976 * fixed a bug in the bootstrap process: the host compiler's values
1977 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1978 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1979 test case from Patrik Nordebo)
1980 * improved the ability of the disassembler on the PPC platform to
1981 provide helpful disassembly notes.
1982 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1983 the class in more cases than previously.
1984 * bug fix: FILE-POSITION now understands :START and :END for
1985 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1986 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1987 8) data. (thanks to David Lichteblau)
1988 * bug fix: it is possible to add a method to a generic function
1989 without lambda list.
1990 * bug fix: reader failed to signal END-OF-FILE inside an
1991 object representation. (reported by Nikodemus Siivola)
1992 * fixed some bugs revealed by Paul Dietz' test suite:
1993 ** LAST and [N]BUTLAST should accept a bignum.
1994 ** condition slot accessors are methods.
1995 ** (VECTOR NIL) is a subtype of STRING.
1997 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1998 * minor incompatible change: some nonsensical specialized lambda
1999 lists (used in DEFMETHOD) which were previously ignored now signal
2001 * minor incompatible change: the system is now aware of the types of
2002 variables in the COMMON-LISP package, and will signal errors for
2003 most violations of these type constraints (where previously they
2004 were silently accepted).
2005 * minor incompatible change: COMPILE-FILE now uses the freedom
2006 afforded (ANSI 3.2.2.3) to use derived function types for
2007 functions defined in the same file. This also permits the system
2008 to warn on static type mismatches and function
2009 redefinition. (Currently it does not work with high DEBUG level.)
2010 * minor incompatible change: VALUES declaration is disabled.
2011 * When issuing notes, the compiler now signals a condition of type
2012 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2013 restart for use in user handlers. It is expected that the
2014 COMPILER-NOTE condition will eventually become a condition
2015 supertype to a hierarchy of note types, which will then be
2016 handleable in a similar fashion. However, at the moment, no such
2017 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2018 but it's an implementation detail, not a classification for the
2020 * Changes in type checking closed the following bugs:
2021 ** type checking of unused values (192b, 194d, 203);
2022 ** template selection based on unsafe type assertions (192c, 236);
2023 ** type checking in branches (194bc).
2024 * A short form of VALUES type specifier has ANSI meaning (it has
2025 increased the number of situations when SBCL cannot perform type
2027 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2028 keywords or constants is permissible.
2029 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2030 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2031 classes. (thanks to Antonio Martinez)
2032 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2033 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2034 argument to a pretty-print stream. Instead, it leaves any such
2035 operations to DESCRIBE-OBJECT methods.
2036 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2038 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2039 lambda lists. (thanks to David Lichteblau)
2040 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2041 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2042 (thanks to Gerd Moellmann)
2043 * fixed bug 246: increased compilation speed of long
2044 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2046 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2048 * DEFCONSTANT now throws a condition of type
2049 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2050 constant to a non-EQL value; CONTINUE and ABORT restarts
2051 respectively change and preserve the value.
2052 * fixed bug 63: The code walker, part of the implementation of CLOS,
2053 is now better at handling symbol macros.
2054 * bug fix: There is no longer an internal implementation type named
2055 CL:LENGTH. (reported by Raymond Toy)
2056 * bug fix: In macro-like defining macros/special operators the
2057 implicit block does not enclose the lambda list.
2058 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2059 enclosed in parentheses) are not suitable as type specifiers, and
2060 their use properly signals an error now.
2061 * bug fix: An argument count mismatch for a type specifier in code
2062 being compiled no longer causes an unhandled error at compile
2063 time, but signals a compile-time warning.
2064 * fixed simple vector readable printing
2065 * bug fix: DESCRIBE takes more care over whether the class
2066 precedence list slot of a class is bound before accessing it.
2067 (reported by Markus Krummenacker)
2068 * bug fix: FORMATTER can successfully compile pretty-printer format
2069 strings which use variants of the ~* directive inside.
2070 * bug fix: SEARCH now applies its TEST predicate to the elements of
2071 the arguments in the correct order. (thanks to Wolfhard Buss)
2072 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2073 in type inference. (thanks to Robert E. Brown)
2074 * bug fix: Reading in symbols with an explicit package name of ""
2075 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2076 * fixed some bugs revealed by Paul Dietz' test suite:
2077 ** NIL is now allowed as a structure slot name.
2078 ** Arbitrary numbers, not just REALs, are allowed in certain
2079 circumstances in LOOP for-as-arithmetic clauses.
2080 ** Multiple class redefinitions before slot access no longer
2081 causes a type error.
2082 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2083 association between the name and a class.
2084 ** Generic functions with non-standard method-combination and over
2085 five methods all of which return constants no longer return NIL
2086 after the first few invocations. (thanks to Gerd Moellmann)
2087 ** CALL-NEXT-METHOD with no arguments now passes the original
2088 values of the arguments, even in the presence of assignment.
2089 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2091 ** DISASSEMBLE works with closures and funcallable instances.
2092 ** ADD-METHOD now returns the generic function, not the new method.
2093 ** FIND-METHOD signals an error if the lengths of the specializers
2094 is incompatible with the generic function, even if the ERRORP
2096 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2097 which its argument is a member.
2098 ** DEFCLASS only redefines the class named by its class-name
2099 argument if that name is the proper name of the class;
2100 otherwise, it creates a new class.
2101 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2102 of the UNBOUND-SLOT condition to the name of the slot.
2103 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2104 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2105 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2106 SLOT-MAKUNBOUND in the specified fashion.
2108 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2109 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2110 cross-compilation host. As a consequence, we can now bootstrap our
2111 way up to SBCL starting with a bare gcc toolchain and human-readable
2112 source code (first the source to CLISP, then the source to SBCL).
2113 * A contributed module containing a partial implementation of the
2114 simple-streams interface has been included. (thanks to Rudi
2116 * A contributed module implementing the RFC1321 Message Digest
2117 Algorithm, known as MD5, has been included.
2118 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2119 no longer has any effect, as the code controlled by this feature
2120 has been deleted. (As far as we know, no-one has ever built using
2121 this feature, and its semantics were confused in any case).
2122 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2123 work on conditions (as required by the ANSI specification),
2124 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2125 expected behaviour on conditions. Users should note, however,
2126 that such behaviour is not required by the ANSI specification,
2127 and so use of this behaviour may render their code unportable.
2128 * fixed some bugs revealed by Paul Dietz' test suite:
2129 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2131 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2132 ** SXHASH on condition objects no longer returns NIL.
2133 ** :ALLOCATION :CLASS slots are better treated; their values are
2134 updated on class redefinition, and initforms inherited from
2135 superclasses are applied.
2136 ** REMOVE-METHOD returns its generic function argument even when
2137 no method was removed.
2138 ** SHARED-INITIALIZE now initializes the values of the requested
2139 slots, including those with :ALLOCATION :CLASS.
2140 ** ALLOCATE-INSTANCE now works on structure classes defined via
2141 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2143 ** SLOT-EXISTS-P now works on conditions, as well as structures
2145 ** MAKE-LOAD-FORM now has the required methods on
2146 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2147 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2148 keyword, and now implements the SLOT-NAMES argument.
2149 ** methods with &OPTIONAL arguments no longer allow too many
2150 arguments to be passed in the call without error.
2151 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2152 option is consistent with the required arguments of the generic
2153 function lambda list.
2154 * bug fix: REQUIRE accepts a string designator. (Thanks to
2156 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2157 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2158 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2159 * bug fix: The compiler now checks for duplicated variables in macro
2161 * bug fix: SETQ on globals returns the correct value.
2162 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2163 not a COMPILER-ERROR (followed by some other strange error on
2164 choosing the CONTINUE restart).
2165 * bug fix: make.sh and friends are now more consistent in the way that
2166 they look for GNU "make".
2168 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2169 * experimental native threads support (on x86 Linux >=2.4 only).
2170 This is not compiled in by default: you need to add :SB-THREAD to
2171 the target features. See the "Beyond ANSI" chapter of the manual
2173 * fix for longstanding nonANSIism: The old distinction between
2174 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2175 The return value from CL:FIND-CLASS is now a CLOS class, and
2176 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2177 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2178 * An interface to the MetaObject Protocol, as described in Kiczales,
2179 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2180 MIT Press, 1991, is available from the SB-MOP package.
2181 * incompatible change: the SB-PCL package should now be considered
2182 a private implementation detail, and no longer a semi-private MOP
2184 * minor incompatible change: due to rearrangement for threads, the
2185 control stack and binding stack are now allocated at arbitrary
2186 addresses instead of being hardcoded per-port. Users affected by
2187 this probably have to be doing advanced things with shared
2188 libraries, and will know who they are.
2189 * minor incompatible change: Previously, all --eval forms used were
2190 processed with READ before any of them were processed with EVAL.
2191 Now each --eval form is processed with both READ and EVAL before
2192 the next --eval form is processed. (Thus package operations like
2193 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2194 work as the user might reasonably expect.)
2195 * minor incompatible change: *STANDARD-INPUT* is now only an
2196 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2198 * minor incompatible change: Y-OR-N-P is now character-oriented,
2199 not line oriented. Also, YES-OR-NO-P now works without errors.
2200 (thanks to Antonio Martinez)
2201 * sb-aclrepl module improvements: an integrated inspector, added
2202 repl features, and a bug fix to :trace command.
2203 * Known functions, which cannot be open coded by the backend, are
2204 considered to be able to check types of their arguments. (fixing
2205 a bug report by Nathan J. Froyd)
2206 * fixed a bug in computing method discriminating functions: It is
2207 now possible to define methods specialized on classes which have
2208 forward-referenced superclasses. (thanks to Gerd Moellmann)
2209 * fixed evaluation order in optional entries (reported by Gilbert
2211 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2212 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2213 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2214 required-by-AMOP NAME argument, as well as CLASS and
2215 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2216 * fixed bug 20: DEFMETHOD can define methods using names that are
2217 not the proper names of classes to designate class specializers.
2218 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2219 Unix file descriptors, instead of blowing up. (thanks to Antonio
2221 * Garbage collection refactoring: user-visible change is that a
2222 call to the GC function during WITHOUT-GCING will not do garbage
2223 collection until the end of the WITHOUT-GCING. If you were doing
2224 this you were probably losing anyway.
2225 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2226 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2227 TYPEP the latter but not the former.
2228 * The compiler issues a full WARNING for calls to undefined functions
2229 with names from the CL package.
2230 * MAP-INTO for a vector destination is open coded. (reported by
2231 Brian Downing on c.l.l)
2232 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2233 documentation string.
2234 * fixed some bugs revealed by Paul Dietz' test suite:
2235 ** COPY-ALIST now signals an error if its argument is a dotted
2237 ** Condition slots are now accessed more correctly in the presence
2238 of multiple initargs for a given slot.
2239 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2240 exclude restarts of the same name associated with a different
2242 ** DEFCLASS of forward-referenced classes with another
2243 forward-referenced class in the superclasses list no longer
2245 ** Condition slots are now initialized once each, not multiple
2246 times. (thanks to Gerd Moellmann)
2247 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2249 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2250 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2251 arguments contain duplicated elements.
2252 ** RESTART-CASE understands local macros.
2253 ** RESTART-CASE associates exactly its own restarts with a condition.
2254 ** ENDP in safe mode checks its argument to be of type LIST.
2255 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2256 in question is unbound.
2257 ** Optimized MAKE-INSTANCE functions no longer cause internal
2258 assertion failures in the presence of duplicate initargs.
2259 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2260 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2261 propagated even in the ctor optimized implementation of
2263 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2265 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2266 * a better implementation of SXHASH on (simple) bit vectors,
2267 measured both in execution speed and in distribution of results
2268 over the positive fixnums, has been installed. Likewise, a better
2269 implementation of EQUAL for simple bit vectors is now available.
2270 * fixed CEILING optimization for a divisor of form 2^k.
2271 * fixed bug 240 (emitting extra style warnings "using the lexical
2272 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2273 by Antonio Martinez)
2274 * fixed SXHASH, giving different results for NIL depending on type
2275 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2276 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2277 variable. (found by Rolf Wester)
2278 * SBCL does not ignore type declarations for special
2279 variables. (reported by rif on c.l.l 2003-03-05)
2280 * some bug fixes in contrib/sb-aclrepl/
2281 * fixed some bugs revealed by Paul Dietz' test suite:
2282 ** a bug in the CONS type specifier, whereby the CAR and CDR
2283 types got intertwined, has been fixed;
2284 ** the type system is now able to reason about the interaction
2285 between INTEGER and RATIO types more completely;
2286 ** APPEND, [N]REVERSE and NRECONC check that those their
2287 arguments, which must be proper lists, are really so;
2288 ** An array specialized to be unable to hold elements has been
2289 implemented, as required -- yes, really -- by ANSI;
2290 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2291 on malformed property lists;
2293 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2294 * incompatible packaging change: in line with Unix convention,
2295 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2296 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2297 * REQUIRE and PROVIDE are now optionally capable of doing something
2298 useful. See the documentation string for REQUIRE.
2299 * infrastructure for a managed SBCL contrib system: contributed
2300 modules in this release include:
2301 ** the ASDF system definition facility;
2302 ** an interface to the BSD Sockets API;
2303 ** an ACL-like convenience interface to the repl;
2304 (thanks to Kevin Rosenberg)
2305 ** an implementation of ROTATE-BYTE, with efficient implementation
2307 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2308 gives a closer approximation to the right answer than previously.
2309 (thanks to Raymond Toy)
2310 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2311 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2312 optional environment arguments, as required by ANSI.
2313 * fixed bugs in other functions taking environment objects, allowing
2314 calls with an explicit NIL environment argument to be compiled
2316 * fixed bug 228: primary return values from
2317 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2318 COMPILE or FUNCTION.
2319 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2320 :TYPE will no longer signal errors on innocuous objects.
2321 * fixed bug 231b: SETQ is better at respecting type declarations in
2322 the lexical environment.
2323 * fixed a bug in DEFCLASS: classes named by symbols with no or
2324 unprintable packages can now be defined.
2325 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2326 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2327 * fixed compiler failure related to checking types of functions.
2328 (reported by Robert E. Brown)
2329 * the compiler is now much more consistent in its error-checking
2330 treatment of bounding index arguments to sequence functions: in
2331 (SAFETY 3) code, errors will be signalled in almost all cases if
2332 invalid sequence bounding indices are passed to functions defined
2333 by ANSI to operate on sequences.
2334 * fixed a bug in the build procedure: documentation of SBCL-specific
2335 packages is now preserved and available in the final Lisp image.
2336 * lifted FDEFINITION lookup out of loops in the implementation of
2337 many list operations. (thanks to Robert E. Brown)
2338 * fixed a bug in the reader: the #n# reader macro now works for
2339 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2340 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2341 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2342 E. Brown and Tony Martinez respectively)
2343 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2344 SLOT-BOUNDP: in particular, it is now able to optimize them much
2345 better, and is now not vulnerable to having packages renamed.
2346 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2347 always called when a slot is not present in an instance. (thanks
2349 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2350 longer signal an error on unreading a character following EOF on
2351 the previous constituent stream. (thanks to Tony Martinez)
2352 * fixed some bugs revealed by Paul Dietz' test suite:
2353 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2354 not just nonnegative fixnums;
2355 ** the logical bit-array operators such as BIT-AND now accept an
2356 explicit NIL for their "opt-arg" argument (to indicate a
2357 freshly-consed result bit-array);
2358 ** ELT now signals an error on an invalid sequence index in safe
2360 ** the type system is now cleverer about negations of numeric
2361 types, and consequently understands the BIGNUM and RATIO types
2363 ** the type system is now cleverer about the interaction between
2364 INTEGER and RATIO types: while bugs still remain, many more
2365 cases are accurately computed;
2366 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2367 if it is in the last clause;
2368 ** CONSTANTLY now correctly returns a side-effect-free function in
2370 ** DECLARE is no longer treated as a special-operator; in
2371 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2372 * incremented fasl file version number due to the change in the
2373 DEFSTRUCT-SLOT-DESCRIPTION structure.
2375 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2376 * minor incompatible change: code processed by the "interpreter" or
2377 EVAL now has a compilation optimization policy of (DEBUG 2)
2378 (changed from (DEBUG 1)) to improve debuggability of interactive
2379 development, and to allow the use of the debug RETURN command in
2381 * an experimental implementation of the RETURN command for the
2382 debugger has been included. (thanks to Frederik Kuivinen)
2383 * fixed bug 62: constraints were not propagated into a loop.
2384 * fixed bug in embedded calls of SORT (reported and investigated by
2386 * fixed some bugs revealed by Paul Dietz' test suite:
2387 ** printing and reading of arrays with some dimensions having
2388 length 0 (thanks to Gerd Moellmann);
2389 ** BOA constructor with &AUX argument without a default value does
2390 not cause a type error;
2391 ** CONSTANTP now returns true for all self-evaluating objects.
2393 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2394 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2395 accessors that are related by inheritance, as specified in the
2396 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2397 Valtteri Vuorikoski)
2398 * The compiler is now able to inline functions that were defined in
2399 a complex lexical environment (e.g. inside a MACROLET).
2400 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2402 * Support for the upcoming FreeBSD-5.0 release has been included.
2403 (thanks to Dag-Erling Smorgrav)
2404 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2405 effect when it is not in a toplevel context.
2406 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2407 stand a better chance of being correct. (thanks to Gerd
2409 * fixed bug in COERCE, which now signals an error on coercing a
2410 rational to a bounded real type which excludes the expected
2412 * The compiler is now able to derive types more accurately from the
2413 COERCE and COMPILE functions.
2414 * fixed bug 223: functional binding is considered to be constant
2415 only for symbols in the CL package.
2416 * fixed bug 231: SETQ did not check the type of a variable being set
2417 (reported by Robert E. Brown)
2418 * A new optimization for MAKE-INSTANCE has been included, fixing
2419 various bugs (including relating to :ALLOCATION :CLASS slots and
2420 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2422 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2423 ** As required by ANSI, LOOP now disallows anonymous collection
2424 clauses such as COLLECT I in conjunction with aggregate boolean
2425 clauses such as THEREIS (= I 1);
2426 ** LOOP now signals an error when any variable is reused in the
2427 same loop (including the potentially useful construct analogous
2428 to WITH A = 1 WITH A = (1+ A);
2429 ** IT is only a special loop symbol within the first clause of a
2430 conditional loop clause;
2431 ** LOOP with a typed iteration variable over a hashtable now
2432 signals a type error iff it should.
2433 * fixed some other bugs revealed by Paul Dietz' test suite:
2434 ** FILE-STREAM now names the class previously known as FD-STREAM;
2435 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2436 argument) no longer signals an error;
2437 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2438 of the slot symbol, rather than using the current package
2439 ((:CONC-NAME "") continues to intern the slot's name in the
2441 * incremented fasl file version number, because of the incompatible
2442 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2443 of the new implementation of DEFINE-COMPILER-MACRO.
2445 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2446 * Support for building SBCL for MIPS platforms running in
2447 little-endian mode has now been checked in, and basic
2448 functionality on said platforms verified.
2449 * minor incompatible change: PCL now records the pathname of a file
2450 in which methods and the like are defined, rather than its
2452 * minor incompatible change: TRUENAME now considers the truename of
2453 a file naming a directory to be the pathname with :DIRECTORY
2454 component indicating that directory.
2455 * minor incompatible change: a NAMED clause in the extended form of
2456 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2457 reason for the previous behaviour is unclear.
2458 * more systematization and improvement of CLOS and MOP conformance
2459 in PCL (thanks to Gerd Moellman and Pierre Mai):
2460 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2462 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2463 primary methods with no specializers;
2464 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2466 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2467 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2468 FORWARD-REFERENCED-CLASSes; error reporting on
2469 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2471 ** SXHASH on CLOS instances now uses a slot internal to the
2472 instance to return different numbers on distinct instances,
2473 while preserving the same return value through invocations of
2475 ** DEFMETHOD signals errors when methods with longer incongruent
2476 lambda lists are added to generic functions;
2477 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2478 CLASS, as specified in AMOP;
2479 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2480 on the order returned by the primary method for classes of
2481 class STANDARD-CLASS;
2482 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2483 * fixed some bugs shown by Paul Dietz' test suite:
2484 ** DOLIST puts its body in TAGBODY;
2485 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2487 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2488 value producing form;
2489 ** if more variables are given to PROGV than values, extra
2490 variables are bound and made to have no value;
2491 ** NSUBSTITUTE on list arguments gets the right answer with
2493 ** ELT signals an error of type TYPE-ERROR when the index argument
2494 is not a valid sequence index;
2495 ** LOOP signals (at macroexpansion time) an error of type
2496 PROGRAM-ERROR when duplicate variable names are found;
2497 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2498 ** FUNCALL of special-operators now cause an error of type
2500 ** PSETQ now works as required in the presence of side-effecting
2501 symbol-macro places;
2502 ** NCONC accepts any object as its last argument;
2503 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2505 ** loop-for-as-package does not require a package to be explicitely
2507 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2509 * fixed bug 166: compiler preserves "there is a way to go"
2510 invariant when deleting code.
2511 * fixed bug 172: macro lambda lists with required arguments after
2512 &REST arguments now cause an error to be signalled. (thanks to
2514 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2515 bug. (thanks to Matthew Danish)
2516 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2518 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2519 arguments are lexically rebound. (thanks to Gerd Moellmann and
2521 * fixed bug 194: error messages are now more informative when there
2522 is no primary method applicable in a call to a generic
2523 function. (thanks to Gerd Moellmann)
2524 * fixed bug in command line argument checking (thanks to Julian
2526 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2527 (thanks to Matthew Danish)
2528 * incremented fasl file version number, because of the
2529 SXHASH-related changes in the layout of CLOS data structures
2531 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2532 * minor incompatible change: The runtime (the Unix executable named
2533 "sbcl") is now much pickier about the .core files it will load.
2534 Essentially it now requires .core files to descend from the same
2535 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2536 as the runtime does. (The intent is to prevent the crashes which
2537 can occur, and which can even be reported as mysterious failures,
2538 when people patch the sources or change the build parameters
2539 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2540 sbcl and .core files.)
2541 * fixed bug: VALUES-LIST is no longer optimized away.
2542 * fixed bug 142: The FFI conversion of C string values to Lisp
2543 string values no longer conses excessively. (thanks to Nathan
2544 Froyd porting Raymond Toy's fix to CMU CL)
2545 * began to systematize and improve MOP conformance in PCL (thanks to
2546 Nathan Froyd, Gerd Moellman and Pierre Mai):
2547 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2549 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2550 ** FINALIZE-INHERITANCE is now called on class finalization;
2551 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2552 argument precedence order.
2553 * fixed bug 202: The compiler no longer fails on functions whose
2554 derived types contradict their declared type.
2555 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2556 so it can be non-toplevel.
2557 * The fasl file version number has changed (because of the new
2558 implementation of DEFMACRO).
2559 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2560 safe code, that any length requirement by their type-specifier
2561 argument is valid. The exceptions to this are described in bug
2563 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2564 functions now check the types of their inputs as required by ANSI.
2565 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2566 introduced symbol is DECLAREd to be SPECIAL.
2567 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2568 * fixed bug: :COUNT argument to sequence functions may be negative
2569 * fixed bug: body of DO-SYMBOLS may contain declarations
2570 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2571 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2572 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2573 symbol macro only once
2574 * fixed printing of call frame when argument list is unavailable
2575 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2576 * compiler no longer signals WARNING on unknown keyword
2579 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2580 * A beta-quality port to the mips architecture running Linux,
2581 based on the old CMUCL backend, has been made. It has been tested
2582 on a big-endian kernel, and works sufficiently well to be able to
2583 rebuild itself; it has not been tested in little-endian mode.
2584 * fixed an inconsistency between gencgc.c and purify.c which made
2585 dumping/loading .core files unreliable
2586 * fixed bug 120a: The compiler now deals correctly with IFs where
2587 the consequent is the same as the alternative, instead of
2588 misderiving the return type. (thanks to Alexey Dejneka)
2589 * fixed bug 113: Logical pathnames are now dumpable (the logical
2590 host is resolved at load-time, throwing an error if it is not
2592 * fixed bug 174: FORMAT's error message is slightly clearer when a
2593 non-printing character is used in a format directive.
2594 * fixed several bugs in compiler checking of type declarations, i.e.
2595 violations of the Python "declarations are assertions" principle
2596 (thanks to Alexey Dejneka)
2597 * fixed several bugs in PCL's error checking (thanks to Gerd
2599 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2601 * fixed bug in compilation of functions as first class values
2602 (thanks to Antonio Martinez-Shotton)
2603 * The compiler's handling TYPE-ERRORs which it can prove will
2604 inevitably happen at runtime has been cleaned up and corrected
2605 in several ways. (thanks to Alexey Dejneka)
2606 * improved argument type checking for various basic arithmetic
2607 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2608 lavished on them in the past that they can be compiled in many
2609 ways in different special cases
2610 * fixed bug 181: compiler checks validity of user supplied type
2612 * cleaned up code flushing in optimization: Function calls which
2613 should signal errors for safety purposes (e.g. which ANSI says
2614 should signal errors when their arguments are of incorrect type)
2615 are no longer optimized away.
2616 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2617 * incremented fasl file version number, because changes in the
2618 implementation of sequence functions like COERCE caused
2619 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2620 in old inline expansions) to become undefined. (Actually these
2621 changes were later undone, so we might very well be binary
2622 compatible with 0.7.7 after all, but leaving the version number
2623 incremented seemed like the simplest and most conservative
2626 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2627 * An alpha-quality port to the parisc architecture running Linux,
2628 based on the old CMUCL backend, has been made. This, even more so
2629 than the other backends, should be considered still a work in
2630 progress; known problems include that the Linux kernel in 64-bit
2631 mode does not propagate the correct sigcontext structure to
2632 userspace, and consequently SBCL on a parisc64 kernel will not
2634 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2635 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2636 suppressed.) Also now that the compiler is looking at declarations
2637 in the environment, it checks optimization declarations as well,
2638 and suppresses inlining when (> DEBUG SPEED).
2639 * More fixes have been made to treatment of floating point exception
2640 treatment and other Unix signals. In particular, floating point
2641 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2642 * The detection and handling of control stack exhaustion (infinite
2643 or very deeply nested recursion) has changed. Stack exhaustion
2644 detection is now done by write-protecting pages at the OS level
2645 and applies at all optimization settings; when found, a
2646 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2647 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2648 be caught using IGNORE-ERRORS.
2649 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2650 correctly when transforming recursive LABELS functions to LETs.
2651 (thanks to Alexey Dejneka)
2652 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2653 that are names of constants or global variables.
2654 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2655 alien routines with docstrings.
2656 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2657 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2659 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2660 (thanks to Eric Marsden)
2661 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2662 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2663 * Bug fix: The SPARC backend can now compile functions involving
2664 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2665 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2666 to a functions expecting a PATHNAME-DESIGNATOR.
2667 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2668 lambda lists. (thanks to Alexey Dejneka)
2669 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2670 functions so that EXPORTing the name of the class doesn't cause
2671 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2672 to Antonio Martinez for reporting this)
2673 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2674 constant-folded without failing an assertion. (thanks to Einar
2675 Floystad Dorum for reporting this)
2676 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2677 types are now dealt with more correctly by the compiler.
2678 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2679 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2680 behaviour analogous to RENAME-FILE. This puts its behaviour more
2681 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2683 * The fasl file version number has changed again. (because of the
2684 bug fix involving the names of PCL MAKE-INSTANCE functions)
2686 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2687 * bug fix: Floating point exceptions are treated much more
2688 consistently on the x86/Linux and PPC/Linux platforms.
2689 * Array initialization with :INITIAL-ELEMENT is now much faster for
2690 cases when the compiler cannot open code the array creation, but
2691 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2692 array accesses have also seen a speed increase.
2693 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2694 specified. (This was at the root of some bad interactions between
2695 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2697 * bug fix: Internal error arguments for undefined functions are now
2698 computed correctly on the PPC/Linux platform.
2699 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2700 Raymond Toy's patch for CMU CL)
2701 * Support for the Solaris 9 operating environment has been included
2702 (thanks to Daniel Merritt)
2703 * A very ugly but hopefully complete draft of the missing FFI chapter
2704 of the manual has been created by reformatting the corresponding
2705 CMU CL manual chapter into (currently very ugly and incoherent)
2706 DocBook and bringing it up to date for SBCL behavior. Thus, the
2707 manual is now essentially complete, at least by my extreme
2708 once-and-only-once standards, whereby it's acceptable to refer to
2709 the doc strings of SB-EXT functions as the primary documentation.
2710 * The fasl file version number has changed again, due to cleanup of
2711 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2712 is no longer a static symbol.)
2714 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2715 * SBCL now builds with OpenMCL (version 0.12) as the
2716 cross-compilation host; also, more progress has been made toward
2717 bootstrapping under CLISP.
2718 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2720 * bug 158 fixed: The compiler can now deal with integer loop
2721 increments different from 1; fixing this turned out also to fix
2723 * bug 169 fixed: no more bogus warnings about using lexical bindings
2724 despite the presence of perfectly good SPECIAL declarations (thanks
2725 to David Lichteblau)
2726 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2727 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2728 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2730 * bug 180 fixed: Method combination specifications no longer ignore
2731 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2732 * bug fix: Structure type predicate functions now check their argument
2733 count as they should.
2734 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2735 correctly. (thanks to Pierre Mai)
2736 * minor incompatible change: The --noprogrammer option is deprecated
2737 in favor of the new --disable-debugger option, which is very similar.
2738 (The major difference is that it takes effect at a slightly different
2739 time at startup, causing handling of errors in --sysinit and
2740 --userinit files will be affected differently.) The
2741 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2742 been added to allow this functionality to be controlled from ordinary
2743 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2744 maintainers, who might want to run non-interactive scripts to
2745 build SBCL cores which will later be used interactively.)
2746 * minor incompatible change: The LOAD function no longer, when given
2747 a wild pathname to load, loads all files matching that pathname.
2748 Instead, an error of type FILE-ERROR is signalled.
2750 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2751 * bug 147 fixed: The compiler preserves its block link/count
2752 invariants more correctly now so that it doesn't crash. (thanks
2754 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2756 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2757 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2758 no-value-for-this-character as NIL (as specified by ANSI).
2759 * HOST-NAMESTRING on physical pathnames now returns a string that is
2760 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2761 (thanks to Christophe Rhodes)
2762 * The Alpha port handles icache flushing more correctly. (thanks to
2764 * More progress has been made toward bootstrapping under CLISP. (thanks
2765 to Christophe Rhodes)
2766 * The fasl file format has changed again, because dynamic loading
2767 on OpenBSD (which has non-ELF object files) motivated some cleanups
2768 in the way that foreign symbols are transformed and passed around.
2769 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2770 is no longer treated as whitespace by the reader, but instead as
2771 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2772 |A
\7fB|, instead of A as it used to.
2774 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2775 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2776 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2777 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2778 this as of 0.7.1.45, but was left out of the previous news section
2779 (thanks to Dan Barlow)
2780 * SBCL now runs on the Solaris operating system on SPARC architectures
2781 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2782 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2783 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2784 * SPARC backend cleanups, allowing builds of cores optimized for V8
2785 and V9 SPARCS, and also emission of code targeted to a particular
2786 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2788 * SBCL is closer to bootstrapping under CLISP, thanks to various
2789 fixes by Christophe Rhodes.
2790 * The fasl file format has changed again, to allow the compiler's
2791 INFO database to support symbol macros.
2792 * The user manual (in doc/) is formatted into HTML more nicely.
2793 (thanks to coreythomas)
2794 * The system is smarter about SUBTYPEP relationships, especially
2795 those involving NOT types (including types such as ATOM which are
2796 represented internally using NOT types). Thus SUBTYPEP is less
2797 likely to return (VALUES NIL NIL) in general, and in particular
2798 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2800 * The fasl file format has changed again, because the internal
2801 representation of types now includes a new slot to support the new
2802 SUBTYPEP-of-NOT-types logic.
2803 * (not a change in the main branch of SBCL, but a related prototype
2804 which can hopefully be merged into the main branch of SBCL in the
2805 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2806 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2807 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2808 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2809 dispatch macro character combinations. (thanks to Alexey Dejneka)
2810 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2811 that superficially look like logical namestrings correctly.
2812 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2814 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2815 default supplied-p) for &optional and &key arguments. (thanks to
2818 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2819 * incompatible change: The compiler is now less aggressive about
2820 tail call optimization, doing it only when (> SPACE DEBUG) or
2821 (> SPEED DEBUG). (This is an incompatible change because there are
2822 programs which relied on the old CMU-CL-style behavior to optimize
2823 away their unbounded recursion which will now die of stack overflow.)
2824 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2825 for non-GENCGC systems has been increased to 20M (since that
2826 seems much closer to the likely performance optimum for modern
2827 systems than the old 4M value was)
2828 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2829 and *DEBUG-PRINT-LEVEL*
2830 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2831 of CMU CL's support for SPARC, and various endianness and other
2832 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2833 * new syntactic sugar for the Unix command line: --load foo.bar is now
2834 an alternate notation for --eval '(load "foo.bar")'.
2836 ** The system now detects stack overflow and handles it gracefully,
2837 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2838 optimization settings. (This is a good thing in general, and
2839 its introduction in this version should be particularly timely
2840 for anyone whose code fails because of suppression of tail
2842 ** The system now hunts for the C variable "environ" in a more
2843 devious way, to avoid segfaults when the C library version differs
2844 between compile time and run time. (thanks to Christophe Rhodes)
2845 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2846 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2847 ** The compiler no longer issues bogus style warnings for undefined
2848 classes in the same source file as the DEFCLASSes which defined
2849 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2851 ** fixes in CONDITION class precedence list for undefined function
2852 errors (thanks to Alexei Dejneka)
2853 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2854 correctly. (thanks to Dan Barlow)
2855 ** portability fixes aiming at bootstrapping under CLISP (thanks
2856 to Dave McDonald and Christophe Rhodes)
2857 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2858 ** fixes in type translation and and type inference (thanks to
2860 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2861 ** various fixes in the new ports (thanks to Dan Barlow)
2862 * several changes related to debugging:
2863 ** suppression of tail recursion, as noted above
2864 ** stack overflow detection, as noted above
2865 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2866 is now the default. (For some time encapsulation has been more
2867 reliable than the breakpoint-based :ENCAPSULATE NIL
2868 implementation, at least on X86 systems; and I just noticed that
2869 encapsulation also seems closer to the spirit of the ANSI
2872 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2874 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2875 up properly again. (There was a packaging bug in 0.7.0 which
2876 left their definitions in SB-SYS::LOAD-FOREIGN and
2877 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2878 vital for most things which interface to C-level interfaces,
2879 like extensions working with sockets or databases or
2880 Perl-compatible regexes or whatever, and the need to fix
2881 this bug is the main reason that 0.7.1 was released so
2883 ** DEFGENERIC is now choosier about the methods it redefines, so that
2884 reLOADing a previously-LOADed file containing DEFGENERICs does
2885 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2886 cycle now works as it should. (thanks to Alexey Dejneka)
2887 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2888 fixed by Christophe Rhodes. (He actually submitted this patch
2889 months ago, and I delayed until after 0.7.0.)
2890 ** Bug 111 (internal compiler confusion about runtime checks on
2891 FUNCTION types) was fixed by Alexey Dejneka.
2892 * Some internal cleanups (getting rid of variables which aren't
2893 needed now that the byte interpreter is gone) caused the fasl
2894 file format number to change again.
2896 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2897 * major incompatible change: The default fasl file extension, i.e. the
2898 default extension for files produced by COMPILE-FILE, has changed
2899 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2901 ** There are many changes in the implementation of the compiler.
2902 SBCL is now essentially a compiler-only implementation of ANSI
2903 Common Lisp. EVAL still "interprets" a few special cases, but
2904 almost all the interesting cases are handled by creating
2905 a LAMBDA expression, calling COMPILE on it, then calling
2906 FUNCALL on the result.
2907 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2908 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2909 Since the code is newer, there might still be some new bugs
2910 (though not as many as before Martin Atzmueller's fixes:-). But
2911 the new code is substantially simpler and clearer, and hopefully
2912 any remaining bugs will be simpler, less fundamental, and more
2913 fixable then the bugs in the old code.
2914 ** The revised compiler is still a little unsteady on its feet.
2916 *** The debugging information it produces (particularly the names
2917 of FUNCTION objects) is sometimes much less useful than what
2918 the old compiler produced.
2919 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2920 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2921 within a MACROLET) has been temporarily weakened.
2922 ** There are new compiler optimizations for various functions:
2923 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2924 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2925 *** the math functions TRUNCATE, FLOOR, and CEILING
2926 *** the function-of-all-trades COERCE
2927 Mostly these should be transparent, but there's one
2928 potentially-annoying problem (bug 117): when the compiler
2929 inline-expands a function and does type analysis on the result,
2930 it can create control paths which have type mismatches, and
2931 when it can't prove that those control paths aren't taken,
2932 it will issue WARNINGs about the type mismatches. This is
2933 a particular problem in practice for the new sequence functions.
2934 It's not clear how this should be fixed, and for now, a
2935 workaround is given in the entry for 117 in the BUGS file.
2936 ** (Because of the interaction between the two previous items --
2937 occasional inlining problems and new inline expansions -- some
2938 of the new sequence function optimizations won't really kick in
2939 completely until debugging information, and then inlining, are
2940 straightened out in some future version.)
2941 * minor incompatible changes:
2942 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2943 DIRECTORY no longer implicitly promotes NIL slots of its
2944 pathname argument to :WILD. In particular, when you ask for the
2945 contents of a directory (which you used to be able to do without
2946 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2947 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2948 ** changes in behavior that ANSI explicitly defines to be
2949 implementation dependent:
2950 *** The new compiler-only implementation still conforms with ANSI,
2951 but acts a little different than before. Besides the obvious
2952 changes in performance tradeoffs (that the cost per form passed
2953 to EVAL has gone up, and the cost per form executed by EVAL
2954 has gone down), the behavior of the system changes a little
2955 because there are no longer any interpreted function objects.
2956 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2957 e.g. doing COMPILE on the output of interactive DEFUN is
2959 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2961 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2962 has changed from (:CL) to NIL.
2963 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2964 e.g. #\Newline and #\Tab, don't have names specified in the
2965 ANSI Common Lisp standard, is now based on their ASCII symbolic
2966 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2967 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2968 are no longer used for output.
2969 ** changes in internal implementation constants:
2970 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2971 4 million. (If your application spends a lot of time GCing and
2972 you have a lot of RAM, you might want to experiment with
2973 increasing it even more.)
2974 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2975 However, almost all old code should still continue to work without
2976 immediate update, as SB-C-CALL is now a (deprecated) nickname
2978 ** Old operator names in the style DEF-FOO are now deprecated in
2979 favor of new corresponding names DEFINE-FOO, for consistency with
2980 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2981 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2982 internal symbols, but a few supported extensions like
2983 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2984 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2985 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2986 etc. as you get deeper into recursive calls to the debugger
2987 command loop, instead of the old "5]", "5]]", "5]]]"
2988 sequence. (I was motivated to do this when squabbles between
2989 ILISP and SBCL left me very deeply nested in the debugger. In the
2990 short term, this change will probably provoke more ILISP/SBCL
2991 squabbles, but hopefully it will be an improvement in the long run.)
2992 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2993 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2994 function, since declaiming return types involving aliens is
2995 (1) annoyingly messy to do by hand and (2) vital to efficient
2996 compilation of code which calls such functions.
2997 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2998 longer reexported by the SB-EXT package. They're solely useful
2999 for alien code, so it seems more logical that you should get
3000 them from the SB-ALIEN package, not in SB-EXT.
3001 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3002 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3003 features. Instead, the code that they used to control is always
3004 built into the system.
3005 * many other bug fixes
3006 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3007 advantage of the new EVAL-WHEN stuff and to clean them up in
3008 general, and they are now more ANSI-compliant in a number of
3009 ways. Martin Atzmueller is responsible for a lot of this.
3010 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3012 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3013 *** correct ERROR type for various file operations
3014 *** some fixes for Lisp streams
3015 *** DEFMETHOD syntax checking
3016 *** changing old weird representation of debug information as
3017 strings (which, among their other deficiencies, don't transform
3018 correctly when you rename packages, and don't change their
3019 print representation when you change things like *PACKAGE*
3020 and *PRINT-LENGTH*) to symbols and lists of symbols
3021 He also made several improvements and fixed several bugs in DESCRIBE.
3022 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3024 *** misbehavior of WRITE-STRING/WRITE-LINE
3025 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3026 and several other LOOP problems as well
3027 *** DIRECTORY when similar filenames are present
3028 *** DEFGENERIC with :METHOD options
3029 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3030 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3031 *** argument ordering in FIND with :TEST option
3032 *** mishandled package designator argument in APROPOS-LIST
3033 *** various problems in the backquote readmacro
3034 *** a bug in APROPOS
3035 *** probably some others that I'm not describing very well here,
3036 since the CVS log documents them by reference to sbcl-devel
3037 messages, and the SourceForge archives aren't working well.:-(
3038 ** Dan Barlow improved the Alpha port (and is making progress on the
3039 PPC port, for those of you who think different).
3040 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3041 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3042 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3043 continues to work on the SPARC port (for those of you in a position
3044 to look down upon our little PC-compatible boxes from a great height).
3045 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3046 and uses that copy, rather than the current dynamic value, when
3047 it's trying to decide whether to truncate output. Thus e.g.
3048 (let ((*print-lines* 50))
3049 (pprint-logical-block (stream nil)
3051 (let ((*print-lines* 8))
3052 (print (aref possiblybigthings i) stream)))))
3053 should now truncate the logical block only at 50 lines, instead of
3054 often truncating it at 8 lines, as it did before.
3055 * The doc/cmucl/ directory, containing old CMU CL documentation
3056 from the time of the fork, is no longer part of the base system.
3057 SourceForge has shut down its anonymous FTP service, and with it
3058 my original plan for distributing the old CMU CL documentation
3059 there. For now, if you need these files you can download an old
3060 SBCL source release and extract them from it.
3061 * The fasl file version number changed again, for dozens of reasons,
3062 some of which are apparent above.
3064 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3065 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3066 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3067 patch, so that DISASSEMBLE output is much nicer.
3068 * The code in the SB-PROFILE package now seems reasonably stable.
3069 I still haven't decided what the final interface should look like
3070 (I'd like PROFILE to interact cleanly with TRACE, since both
3071 facilities use function encapsulation) but if you have a need
3072 for profiling now, you can probably use it successfully with
3073 the current CMU-CL-style interface.
3074 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3075 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3076 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3077 link now returns the dangling link itself, and for similar
3078 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3079 link itself. (In these cases the old code signalled an error and
3080 looped endlessly, respectively.) Thus, DIRECTORY now works even
3081 in the presence of dangling and cyclic symbolic links.
3082 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3083 is now a supported extension again, since the consensus on
3084 sbcl-devel was that it can be useful for ordinary development
3085 work, not just for debugging SBCL itself.
3086 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3087 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3088 that currently-defined functions might be redefined later with
3089 different return types.
3090 * Hash tables can be printed readably, as inspired by CMU CL code
3091 of Eric Marsden and SBCL code of Martin Atzmueller.
3092 * better error handling in CLOS method combination, thanks to
3093 Martin Atzmueller porting Pierre Mai's CMU CL patches
3094 * more overflow fixes for >16Mbyte I/O buffers
3095 * A bug in READ has been fixed, so that now a single Ctrl-D
3096 character suffices to cause end-of-file on character streams.
3097 In particular, now you only need one Ctrl-D at the command
3098 line (not two) to exit SBCL.
3099 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3101 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3102 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3103 does the right thing.
3104 * The implementation of some type tests, especially for CONDITION
3105 types, is now tidier and maybe faster, due to CMU CL code
3106 originally by Douglas Crosher, ported by Martin Atzmueller.
3107 * Some math functions have been fixed, and there are new
3108 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3109 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3110 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3111 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3112 likely to be built into sbcl-0.7.0.)
3113 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3114 CL, ported to SBCL by Martin Atzmueller)
3115 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3116 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3117 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3118 * There's a new slam.sh hack to shorten the edit/compile/debug
3119 cycle for low-level changes to SBCL itself, and a new
3120 :SB-AFTER-XC-CORE target feature to control the generation of
3121 the after-xc.core file needed by slam.sh.
3122 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3123 COMPILE-FILE is no longer supported, so that now every function
3124 gets an entry point, so that block compilation looks a little
3125 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3126 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3127 returns the number of bytes consed since the system started,
3128 rather than the number consed since the first time the function
3129 was called. (The new definition parallels ANSI functions like
3130 CL:GET-INTERNAL-RUN-TIME.)
3131 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3132 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3133 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3134 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3135 * Fasl file version numbers are now independent of the target CPU,
3136 since historically most system changes which required version
3137 number changes have affected all CPUs equally. Similarly,
3138 the byte fasl file version is now equal to the ordinary
3141 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3142 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3143 is no longer recognized. I apologize for this, because it was
3144 listed in SB-EXT as a supported extension, but I found that
3145 its existing behavior was poorly specified, as well as incorrectly
3146 specified, and it looked like too much of a mess to straighten it
3147 out. I have enough on my hands trying to get ANSI stuff to work..
3148 * many patches ported from CMU CL by Martin Atzmueller, with
3149 half a dozen bug fixes in pretty-printing and the debugger, and
3150 half a dozen others elsewhere
3151 * fixed bug 13: Floating point infinities are now supported again.
3152 They might still be a little bit flaky, but thanks to bug reports
3153 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3154 as flaky as they were.
3155 * The --noprogrammer command line option is now supported. (Its
3156 behavior is slightly different in detail from what the old man
3157 page claimed it would do, but it's still appropriate under the
3158 same circumstances that the man page talks about.)
3159 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3160 are now supported, and enabled by default. Thus, the compiler can
3161 handle many floating point and complex operations much less
3162 inefficiently. (Thus e.g. you can implement a complex FFT
3164 * The compiler now detects type mismatches between DECLAIM FTYPE
3165 and DEFUN better, and implements CHECK-TYPE more correctly, and
3166 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3167 thanks to patches from Martin Atzmueller.
3168 * various fixes to make the cross-compiler more portable to
3169 ANSI-conforming-but-different cross-compilation hosts (notably
3170 Lispworks for Windows, following bug reports from Arthur Lemmens)
3171 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3172 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3173 fixed thanks to Pierre Mai's CMU CL patches.
3174 * fixes to keep the system from overflowing internal counters when
3175 it tries to use i/o buffers larger than 16M bytes
3176 * fixed bug 45a: Various internal functions required to support
3177 complex special functions have been merged from CMU CL sources.
3178 (When I was first setting up SBCL, I misunderstood a compile-time
3179 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3180 * improved support for type intersection and union, fixing bug 12
3181 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3182 more obscure bugs as well
3183 * some steps toward byte-compiling non-performance-critical
3184 parts of the system, courtesy of patches from Martin Atzmueller
3185 * Christophe Rhodes has made some debian packages of sbcl at
3186 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3187 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3188 stable, but are nonetheless usable. When he's ready, I'd be happy
3189 to add them to the SourceForge "File Releases" section. (And if
3190 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3191 * new fasl file format version number (because of changes in
3192 internal representation of (OR ..) types to accommodate the new
3193 support for (AND ..) types, among other things)
3195 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3196 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3198 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3200 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3201 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3202 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3203 * DESCRIBE now works on structure objects again.
3204 * Most function call argument type mismatches are now handled as
3205 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3206 know whether the function will be redefined before the call is
3207 executed. (The compiler could flag local calls with full WARNINGs,
3208 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3209 it doesn't keep track of enough information to know whether calls
3210 are local in this sense.)
3211 * Compiler output is now more verbose, with messages truncated
3212 later than before. (There should be some supported way for users
3213 to override the default verbosity, but I haven't decided how to
3214 provide it yet, so this behavior is still controlled by the internal
3215 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3216 src/compiler/ir1util.lisp.)
3217 * Fasl file format version numbers have increased again, because
3218 support for the Gray streams extension changes the layout of the
3219 system's STREAM objects.
3220 * The Gray subclassable streams extension now works, thanks to a
3221 patch from Martin Atzmueller.
3222 * The full LOAD-FOREIGN extension (not just the primitive
3223 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3224 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3225 but like most other programs, it defaults to copying the Unix
3226 environment from the original process instead of starting the
3227 new process in an empty environment.
3228 * Extensions which manipulate the Unix environment now support
3229 an :ENVIRONMENT keyword option which doesn't smash case or
3230 do other bad things. The CMU-CL-style :ENV option is retained
3231 for porting convenience.
3232 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3233 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3235 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3237 * A patch from Martin Atzmueller seems to have solved the SIGINT
3238 problem, and as far as we know, signal-handling now works cleanly.
3239 (If you find any new bugs, please report them!)
3240 * The system no longer defaults Lisp source file names to types
3241 ".l", ".cl", or ".lsp", but only to ".lisp".
3242 * The compiler no longer uses special default file extensions for
3243 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3244 seems to expect a single default extension for all compiled code,
3245 and there's no compelling reason to try to stretch the standard
3246 to allow two different extensions.) Instead, byte-compiled files
3247 default to the same extension as native-compiled files.
3248 * Fasl file format version numbers have increased again, because
3249 a rearrangement of internal implementation packages made some
3250 dumped symbols in old fasl files unreadable in new cores.
3251 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3252 many fewer weird special cases.
3253 * Bug #17 (differing COMPILE-FILE behavior between logical and
3254 physical pathnames) has been fixed, and some related misbehavior too,
3255 thanks to a patch from Martin Atzmueller.
3256 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3257 by Tim Moore, ported to SBCL by Martin Atzmueller.
3258 * Martin Atzmueller fixed several filesystem-related problems,
3259 including bug #36, in part by porting CMU CL patches, which were
3260 written in part by Paul Werkowski.
3261 * More compiler warnings in src/runtime/ are gone, thanks to
3262 more patches from Martin Atzmueller.
3263 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3266 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3268 * DESCRIBE now works on CONDITION objects.
3269 * The debugger now handles errors which arise when trying to print
3270 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3272 * The build system now uses an additional file, customize-target-features.lisp,
3273 to allow local modifications to the target *FEATURES* list. (The point of
3274 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3275 debugging features enabled, without having to worry about propagating it
3276 into everyone's system when I do a "cvs update".) When no
3277 customize-target-features.lisp file exists, the target *FEATURES* list
3278 should be constructed the same way as before.
3279 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3280 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3281 warn about behavior which is undefined under the ANSI spec. Note: This
3282 is specified by ANSI, but it's not very popular with programmers.
3283 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3284 macro in the SBCL sources for an example of a workaround which you
3285 might use to make portable ANSI-standard code which does what you want.
3286 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3287 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3288 when it's used as a non-toplevel form. (This is required in order
3289 to implement the DEFCONSTANT-EQX macro.)
3290 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3291 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3292 funny things, due to bugs in the implementation of EVAL-WHEN
3293 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3294 non-toplevel DEFCONSTANTs are uncommon.)
3295 * The core file version number and fasl file version number have been
3296 incremented, because the old noncompliant DEFCONSTANT behavior involved
3297 calling functions which no longer exist, and because I also took the
3298 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3299 * fixed bug 1 (error handling before read-eval-print loop starts), and
3300 redid debugger restarts and related debugger commands somewhat while
3302 ** The QUIT debugger command is gone, since it did something
3303 rather different than the SB-EXT:QUIT command, and since it never
3304 worked properly outside the main toplevel read/eval/print loop.
3305 Invoking the new TOPLEVEL restart provides the same functionality.
3306 ** The GO debugger command is also gone, since you can just invoke
3307 the CONTINUE restart directly instead.
3308 ** The TOP debugger command is also gone, since it's redundant with the
3309 FRAME 0 command, and since it interfered with abbreviations for the
3311 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3313 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3314 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3315 some porting work by Martin Atzmueller)
3316 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3317 with a boatload of patches which he ported to SBCL. Now that those
3319 ** The system tries to make sure that its low-priority messages
3320 are prefixed by semicolons, to help people who like to use
3321 syntax highlighting in their ILISP buffer. (This patch
3322 was originally due to Raymond Toy.)
3323 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3324 patches originally written by Raymond Toy.
3325 ** The compiler understands coercion between single-value and
3326 multiple-VALUES type expressions better, getting rid of some very
3327 weird behavior, thanks to patches originally by Robert MacLachlan
3328 and Douglas Crosher.
3329 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3330 lambda lists, thanks to a patch originally by Pierre Mai.
3331 ** The system no longer bogusly warns about "abbreviated type
3333 ** The compiler gets less confused by inlining and RETURN-FROM,
3334 thanks to some patches originally by Tim Moore.
3335 ** The system no longer hangs when dumping circular lists to fasl
3336 files, thanks to a patch originally from Douglas Crosher.
3337 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3338 undefined function error.
3339 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3340 in structure slot initforms) for now, documented workaround instead:-|
3341 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3342 * fixed bug 5: added stubs for various Gray stream functions called
3343 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3344 installed, at least appropriate type errors are generated
3345 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3346 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3347 consistently in DEFMETHOD forms.
3348 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3349 it doesn't seem to affect SBCL after all
3350 * The C runtime system now builds with better optimization and many
3351 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3353 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3355 * The system is now under CVS at SourceForge (instead of the
3356 CVS repository on my home machine).
3357 * The new signal handling code has been tweaked to treat register
3358 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3359 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3360 downstream, e.g. in debug-int.lisp, has implicit dependencies
3361 on the unsignedness of integer representation of machine words,
3362 and that caused the system to bomb out with infinite regress
3363 when trying to recover from type errors involving signed values,
3364 e.g. (BUTLAST '(1 2 3) -1).)
3365 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3366 (This was one of the bugs Peter Van Eynde reported back in July.)
3367 * The system now uses code inspired by Colin Walters' O(N)
3368 implementation of MAP (from the cmucl-imp@cons.org mailing
3369 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3370 inline the MAP operation, and there is more than one
3371 sequence argument to the MAP call (so that it can't just
3372 do ETYPECASE once and for all based on the type of the
3373 single sequence argument). (The old non-inline implementation
3374 of the general M-argument sequence-of-length-N case required
3375 O(M*N*N) time when any of the sequence arguments were LISTs.)
3376 * The QUIT :UNIX-CODE keyword argument has been renamed to
3377 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3378 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3380 * Raymond Wiker's patches to port dynamic loading from Linux to
3381 FreeBSD have been added.
3382 * The BUGS file is now more nearly up to date, thanks in large part
3383 to Martin Atzmueller's review of it.
3384 * The debugger now flushes standard output streams before it begins
3385 its output ("debugger invoked" and so forth).
3386 * The core version number and fasl file version number have both
3387 been incremented, because of incompatible changes in the layout
3389 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3390 used to not be called for a saved Lisp image.)
3391 * Martin Atzmueller's version of a patch to fix a compiler crash,
3392 as posted on sbcl-devel 13 September 2000, has been installed.
3393 * Instead of installing Martin Atzmueller's patch for the
3394 compiler transform for SUBSEQ, I deleted the compiler transform,
3395 and transforms for some similar consing operations.
3396 * A bug in signal handling which kept TRACE from working on OpenBSD
3398 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3399 away by constant folding
3400 * The system now defines its address space constants in one place
3401 (in the Lisp sources), and propagates them automatically elsewhere
3402 (through GENESIS and the sbcl.h file). Therefore, patching the
3403 address map is less unnecessarily tedious and error-prone. The
3404 Lisp names of address space constants have also been systematized.
3405 * CVS tags like dollar-Header-dollar have been removed from
3406 the sources, because they have never saved me trouble and
3407 they've been source of trouble working with patches and other
3408 diff-related operations.
3409 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3410 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3412 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3414 * The system has been ported to OpenBSD.
3415 * The system now compiles with a simple "sh make.sh" on the systems
3416 that it's supported on. I.e., now you no longer need to tweak
3417 text in the target-features.lisp-expr and symlinks in src/runtime/
3418 by hand, the make.sh takes care of it for you.
3419 * The system is no longer so grossly inefficient when compiling code
3420 involving vectors implemented as general (not simple) vectors (VECTOR T),
3421 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3422 which dares to use the various sequence functions on non-simple
3423 vectors, takes less of a performance hit.
3424 * There is now a primitive type predicate VECTOR-T-P
3425 to test for the (VECTOR T) type, so that e.g.
3426 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3427 can now be compiled with some semblance of efficiency. (The old code
3428 turned the type declaration into a full call to %TYPEP at runtime!)
3429 * AREF on (VECTOR T) is still not fast, since it's still compiled
3430 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3431 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3432 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3433 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3434 without making full calls to SUBTYPEP at runtime.
3435 (Some analogous efficiency issues for non-simple vectors specialized to
3436 element types other than T, or for non-simple multidimensional arrays,
3437 have not been addressed. They could almost certainly be handled the
3438 same way if anyone is motivated to do so.)
3439 * The changes in array handling break binary compatibility, so
3440 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3441 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3442 instead of (VALUES T T).
3443 * By following the instructions that Dan Barlow posted to sbcl-devel
3444 on 2 July 2000, I was able to enable primitive dynamic object
3445 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3446 functionality is not implemented (since it calls ld to resolve
3447 library references automatically, requiring RUN-PROGRAM for its
3448 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3449 try to resolve library references) is now supported.
3450 * The system now flushes the standard output streams when it terminates,
3451 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3452 them at several other probably-convenient times, e.g. in each pass of
3453 the toplevel read-eval-print loop, and after evaluating a form given
3454 as an "--eval" command-line option. (These changes were motivated by a
3455 discussion of stream flushing issues on cmucl-imp in August 2000.)
3456 * The source transform for TYPEP of array types no longer assumes
3457 that an array whose element type is a not-yet-defined type
3458 is implemented as an array of T, but instead punts, so that the
3459 type will be interpreted at runtime.
3460 * There is now some support for cross-compiling in make.sh: each of
3461 the phases of make.sh has its own script. (This should be transparent
3462 to people doing ordinary, non-cross-compile builds.)
3463 * Since my laptop doesn't have hundreds of megabytes of memory like
3464 my desktop machine, I became more motivated to do some items on
3465 my to-do list in order to reduce the size of the system a little:
3466 ** Arrange for various needed-only-at-cold-init things to be
3467 uninterned after cold init. To support this, those things have
3468 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3469 symbols with such names are now uninterned after cold init).
3470 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3471 fasl files for cold load.
3472 ** Remove the old compiler structure pooling code (which used to
3473 be conditional on the target feature :SB-ALLOC) completely.
3474 ** Redo the representation of some data in cold init to be more compact.
3475 (I also looked into supporting byte compiled code at bootstrap time,
3476 which would probably reduce the size of the system a lot, but that
3477 looked too complicated, so I punted for now.)
3478 * The maximum signal nesting depth in the src/runtime/ support code has
3479 been reduced from 4096 to 256. (I don't know any reason for the very
3480 large old value. If the new smaller value turns out to break something,
3481 I'll probably just bump it back up.)
3482 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3484 * Many, many bugs reported by Peter Van Eynde have been added to
3485 the BUGS list; some have even been fixed.
3486 * While enabling dynamic object file loading, I tried to make the
3487 code easier to understand, renaming various functions and variables
3488 with less ambiguous names, and changing some function calling
3489 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3490 * While trying to figure out how to do the OpenBSD port, I tried to
3491 clean up some of the code in src/runtime/. In particular, I dropped
3492 support for non-POSIX signal handling, added various comments,
3493 tweaked the code to reduce the number of compilation warnings, and
3494 renamed some files to increase consistency.
3495 * To support the new automatic configuration functionality in make.sh,
3496 the source file target-features.lisp-expr has been replaced with the
3497 source file base-target-features.lisp-expr and the machine-generated
3498 file local-target-features.lisp-expr.
3499 * fixed a stupid quoting error in make.sh so that using CMU CL
3500 "lisp -batch" as cross-compilation host works again
3502 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3504 * DESCRIBE no longer tries to call itself recursively to describe
3505 bound/fbound values, so that it no longer fails on symbols which are
3506 bound to themselves (like keywords, T, and NIL).
3507 * DESCRIBE now works on generic functions.
3508 * The printer now prints less-screwed-up representations of closures
3509 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3510 * A private symbol is used instead of the :EMPTY keyword previously
3511 used to mark empty slots in hash tables. Thus
3512 (DEFVAR *HT* (MAKE-HASH-TABLE))
3513 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3514 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3515 now does what ANSI says that it should. (You can still get
3516 similar noncompliant behavior if bang on the hash table
3517 implementation with all the symbols you get back from
3518 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3519 This breaks binary compatibility, since tests for equality to
3520 :EMPTY are wired into things like the macroexpansion of
3521 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3523 * There's now a minimal placeholder implementation for CL:STEP,
3524 as required by ANSI.
3525 * An obscure bug in the interaction of the normal compiler, the byte
3526 compiler, inlining, and structure predicates has been patched
3527 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3528 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3530 * Missing ordinary arguments in a macro call are now detected even
3531 when the macro lambda list contains &KEY or &REST.
3532 * The debugger no longer complains about encountering the top of the
3533 stack when you type "FRAME 0" to explicitly instruct it to go to
3534 the top of the stack. And it now prints the frame you request even
3535 if it's the current frame (instead of saying "You are here.").
3536 * As specified by ANSI, the system now always prints keywords
3537 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3539 * The default initial SIZE of HASH-TABLEs is now smaller.
3540 * Type information from CLOS class dispatch is now propagated
3541 into DEFMETHOD bodies, so that e.g.
3542 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3544 is now basically equivalent to
3545 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3546 (DECLARE (TYPE SINGLE-FLOAT X))
3548 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3549 operation, without having to do run-time type dispatch.
3550 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3551 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3552 * Since I don't seem to be making big file reorganizations very often
3553 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3554 is overflowing my ability to conveniently back them up), I've finally
3555 checked the system into CVS. (The CVS repository is on my home system,
3556 not at SourceForge -- putting it on SourceForge might come later.)
3557 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3558 high-level GC-NOTIFY-FOO functions send their output. (There's
3559 still very little control of where low-level verbose GC functions
3560 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3561 less than it used to -- the GC-NOTIFY-FOO functions are now under
3562 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3563 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3564 in only one place in the source code, and propagates it automatically
3565 everywhere that it's needed. Thus e.g. when I bump the version from
3566 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3567 * The C source files now include boilerplate legalese and documentation
3568 at the head of each file (just as the Lisp source files already did).
3569 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3570 to his page will be replaced with a link to his new CLiki service.
3572 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3574 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3575 * The build process now looks for GNU make under the default name "gmake",
3576 instead of "make" as it used to. If GNU make is not available as "gmake"
3577 on your system, you can change this default behavior by setting the
3578 GNUMAKE environment variable.
3579 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3580 can build without error under CMU CL.
3582 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3584 * There is now a partial SBCL user manual (with some new text and some
3585 text cribbed from the CMU CL manual).
3586 * The beginnings of a profiler have been added (starting with the
3587 CMU CL profiler and simplifying and cleaning up). Eventually the
3588 main interface should be through the TRACE macro, but for now,
3589 it's still accessed through vaguely CMU-CL-style functions and macros
3590 exported from the package SB-PROFILE.
3591 * Some problems left over from porting CMU CL to the new
3592 cross-compilation bootstrap process have been cleaned up:
3593 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3594 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3595 part when getting rid of the compiler *BACKEND* stuff.)
3596 ** The value of *NULL-TYPE* was screwed up, because it was
3597 being initialized before the type system knew the final
3598 definition of the 'NULL type. This screwed up several key
3599 optimizations in the compiler, causing inefficiency in all sorts
3600 of places. (I found it because I wanted to understand why
3601 GET-INTERNAL-RUN-TIME was consing.)
3602 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3603 PROCLAIM FTYPE information. Unfortunately this broke binary
3604 compatibility again, since now the forms output by DEFGENERIC
3605 to refer to functions which didn't exist in 0.6.3.
3606 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3607 can use the new (as of 0.6.3) transform for SOME into MAP into
3609 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3610 values to (INTEGER 0 1000000), so that the time code will no longer
3611 occasionally get blown up by Linux returning 1000000 microseconds
3612 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3613 its output conform to the ANSI spec. (Alas, this makes its output
3614 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3615 * A full call to MAP NIL with a single sequence argument no longer conses.
3616 * fixes to problems pointed out by Martin Atzmueller:
3617 * The manual page no longer talks about multiprocessing as though
3618 it were currently supported.
3619 * The ILISP support patches have been removed from the distribution,
3620 because as of version 5.10.1, ILISP now supports SBCL without us
3621 having to maintain patches.
3622 * added a modified version of Raymond Toy's recent CMU CL patch for
3623 EQUALP comparison of HASH-TABLE
3625 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3627 * The system still can't cross-compile itself with
3628 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3629 entails), but at least it can compile more of itself that way
3630 than it used to be able to, and various buglets which were uncovered
3631 by trying to cross-compile itself that way have now been fixed.
3632 * This release breaks binary compatibility again. This time
3633 at least I've incremented the FASL file format version to 2, so that the
3634 problem can be detected reliably instead of just causing weird errors.
3635 * various new style warnings:
3636 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3637 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3638 ** using the lexical binding of a variable named in the *FOO* style
3639 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3640 as specified by ANSI.
3641 * *RANDOM-STATE* is no longer automatically initialized from
3642 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3643 default behavior of the system is to repeat its behavior every time
3644 it's run. If you'd like to change this behavior, you can always
3645 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3646 old convention there was no comparably easy way to get the system to
3647 repeat its behavior every time it was run.
3648 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3649 FTYPE declarations has been removed, in favor of their ANSI
3650 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3651 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3652 the types of their sequence arguments can be determined at compile time.
3653 This is done through a new open code expansion for MAP which eliminates
3654 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3655 argument types can be determined at compile time.
3656 * The optimizer now transforms COERCE into an identity operation when it
3657 can prove that the coerced object is already of the correct type. (This
3658 can be a win for machine generated code, including the output of other
3659 optimization transforms, such as the MAP transform above.)
3660 * Credit information has been moved from source file headers into CREDITS.
3661 * Source file headers have been made more standard.
3662 * The CASE macro now compiles without complaining even when it has
3665 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3667 * (Note that the way that the PCL macroexpansions were rewritten
3668 to accommodate the change in DEFGENERIC below breaks binary
3669 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3670 not run under sbcl-0.6.2. Once we get out of alpha releases,
3671 i.e. hit release 1.0.0, we'll probably try to maintain binary
3672 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3673 and sbcl-1.4.4. Until then, however, it might be fairly common
3674 for maintenance releases to break binary compatibility.)
3675 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3677 * The reporting of unhandled signals has been changed to print some
3678 explanatory text as well as the report form. (Previously only
3679 the report form was printed.)
3680 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3681 it defines, so that the compiler no longer issues undefined function
3682 warnings for compiled-but-not-yet-loaded generic functions.
3683 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3684 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3685 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3686 section of the ANSI spec are supported.
3687 * The "" nickname for the "KEYWORD" package has been removed.
3688 The reader still handles symbol tokens which begin with a package marker
3689 as keywords, but it doesn't expose its mechanism for doing so in the
3690 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3691 * The system now issues STYLE-WARNINGs for contradictory TYPE
3692 proclamations. (Warnings for contradictory FTYPE proclamations would
3693 be nice too, but those can't be done usefully unless the type system
3694 is made smarter about FUNCTION types.)
3695 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3696 systematized, so that "*target-*.lisp is supposed to exist only on the
3697 target and imply that there's a related file which exists on the
3698 host, and *host-*.lisp is supposed to exist only on the host and imply
3699 that there's a related file which exists on the target. This involves a
3700 lot of renaming. Hopefully the acute confusion caused by the renaming
3701 will be justified by the reduction in chronic confusion..
3702 ** runtime-type.lisp -> early-target-type.lisp
3703 ** target-type.lisp -> late-target-type.lisp
3704 ** early-host-format.lisp -> early-format.lisp
3705 ** late-host-format.lisp -> late-format.lisp
3706 ** host-error.lisp -> misc-error.lisp
3707 ** early-error.lisp -> early-target-error.lisp
3708 ** late-error.lisp -> late-target-error.lisp
3709 ** host-defboot.lisp -> early-defboot.lisp
3710 ** code/misc.lisp -> code/target-misc.lisp
3711 ** code/host-misc.lisp -> code/misc.lisp
3712 ** code/numbers.lisp -> code/target-numbers.lisp
3713 ** code/early-numbers.lisp -> numbers.lisp
3714 ** early-host-type.lisp -> early-type.lisp
3715 ** late-host-type.lisp -> late-type.lisp
3716 ** host-typep.lisp -> typep.lisp
3717 ** load.lisp -> target-load.lisp
3718 ** host-load.lisp -> load.lisp
3719 ** host-disassem.lisp -> disassem.lisp
3720 ** host-insts.lisp -> insts.lisp
3721 ** byte-comp.lisp -> target-byte-comp.lisp
3722 ** host-byte-comp.lisp -> byte-comp.lisp
3723 ** host-signal.lisp -> signal.lisp
3724 ** host-defstruct.lisp -> defstruct.lisp
3725 ** late-target-type.lisp -> deftypes-for-target.lisp
3726 Furthermore, several other previously target-only files foo.lisp (e.g.
3727 hash-table.lisp and random.lisp) have been split into a target-and-host
3728 foo.lisp file and a target-only target-foo.lisp file, with their key type
3729 definitions in the target-and-host part, so that the cross-compiler will
3730 know more about target types.
3731 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3732 gone away. In their place are various *BACKEND-FOO* variables
3733 corresponding to the slots of the old structure.
3734 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3735 into the target SBCL has been fixed.
3736 * The chill.lisp system for loading cold code into a running SBCL
3738 * Support for the CMU CL "scavenger hook" extension has been removed.
3739 (It was undocumented and unused in the CMU CL sources that SBCL was
3740 derived from, and stale in sbcl-0.6.1.)
3741 * Various errors in the cross-compiler type system were detected
3742 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3743 (enabling various consistency checks). Many of them were fixed,
3744 but some hard problems remain, so the compiler is back to
3745 running without *TYPE-SYSTEM-INITIALIZED* for now.
3746 * As part of the cross-compiler type system cleanup, I implemented
3747 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3748 * I have started adding UNCROSS calls throughout the type system
3749 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3750 on cross-compiler input files will be able to go away, and various
3752 * CONSTANTP now returns true for quoted forms (as explicitly required
3755 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3757 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3758 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3759 (MAKE-LIST -1). In the longer term, it ought to become true
3760 that declarations are assertions even at SAFETY 1. For now, it's not
3761 quite true even at SAFETY 3, but it's at least more nearly true..
3762 (Note that this change seems to increases the size of the system by
3763 O(5%) and to decrease the speed of the compiler by 20% or more.)
3764 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3765 for the problem of printing dozens of lines of distracting information
3766 about low-level system machinery as part of the top stack frame
3767 on entry to the debugger when an undefined function was called.
3768 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3769 is not reset to COMMON-LISP-USER.
3770 * Compilation of stuff related to dyncount.lisp has been made conditional
3771 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3772 smaller. The various dyncount-related symbols have been moved into
3773 a new "SB-DYNCOUNT" package.
3774 * tty-inspect.lisp has been renamed to inspect.lisp.
3775 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3776 feature has gone away. (When we eventually port to other flavors of
3777 libc and/or Unix, we'll try to make the differences between flavors
3778 invisible at the user level.)
3779 * Various other *FEATURES* tags, and/or their associated conditionals,
3780 have been removed if obsolescent, or given better documentation, or
3781 sometimes given more-mnemonic names.
3783 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3785 * tidied up "make.sh" script
3786 * tidied up system directory structure
3787 * better "clean.sh" behavior
3788 * added doc/FOR-CMUCL-DEVELOPERS
3789 * many many small tweaks to output format, e.g. removing possibly-confusing
3790 trailing #\. character in DESCRIBE-INSTANCE
3791 * (EQUALP #\A 'A) no longer signals an error.
3792 * new hashing code, including EQUALP hashing
3793 * tidied up Lisp initialization and toplevel
3794 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3795 * command line argument processing
3796 * added POSIX-GETENV function to deal with Unix-ish environment variables
3797 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3798 terminating SBCL on EOF
3799 * non-verbose GC by default
3800 * There is no more "sbcl" shell script; the sbcl file is now the C
3801 runtime executable (just like CMU CL).
3802 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3804 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3805 symbol and package information as Lisp native symbol and package objects
3806 instead of strings naming symbols and strings naming packages. This way,
3807 whenever packages are renamed (as in warm init), debug information is
3808 transformed along with everything else.
3809 * tweaked the optimization policy declarations which control the building
3810 of SBCL itself. Now, among other things, the system no longer saves
3811 source location debugging information. (This helps two problems at once
3812 by reducing SBCL size and by keeping SBCL from trying to look for its
3813 sources -- which may not exist -- when reporting errors.)
3814 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3815 debugging and testing purposes
3816 * cleaned up printing, making the printer call PRINT-OBJECT for
3817 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3818 methods, giving nearly-ANSI behavior
3819 * converted almost all special variables to use *FOO* naming convention
3820 * deleted PARSE-TIME functionality, since it can be done portably
3821 * moved some files out of cold init into warm init
3822 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3824 * regularized formatting of source files
3825 * added an install.sh script
3826 * fixed ridiculous memory usage of cross-compiler by making
3827 compiler/alloc.lisp not try to do pooling unless it can hook
3828 itself into the GC of the cross-compilation host. Now the system
3829 builds nicely on my old laptop.
3830 * added :SB-ALLOC in target-features.lisp-expr
3831 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3832 was not implemented)
3833 * re-did condition handling and note reporting in the compiler. Notes
3834 are no longer handled by signalling conditions. Style warnings
3835 and warnings are handled more correctly and reported in such a way
3836 that it's easy to find one or the other in your output (so that you
3837 can e.g. figure out which of many problems caused COMPILE-FILE to
3839 * changed the severity of several compiler warnings from full WARNING
3840 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3841 compiler note reporting so that it doesn't use the condition system
3842 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3843 COMPILE-FILE command)
3844 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3845 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3846 no longer supported, since their implementation was deeply intertwingled
3847 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3848 * removed bogus "support" for compiler macros named (SETF FOO), and
3849 removed the compiler macro for SETF INFO (but only after making a fool
3850 of myself on the cmucl-imp mailing list by posting a bogus patch for
3851 DEFINE-COMPILER-MACRO..)
3852 * Compiled files containing forms which have side effects on the Lisp
3853 reader (such as DEFPACKAGE forms) are now handled more correctly.
3854 (Compiler queuing of top level lambdas has been suppressed by setting
3855 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3856 * deleted various currently-unused source files, e.g. gengc.lisp. They
3857 may be added back at some point e.g. when porting to other architectures,
3858 but until they are it's distracting to distribute them and to try to
3860 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3861 there were so many of them they're just distractions, and UNCROSS is
3862 known to be able to handle the current sources
3863 * moved PROFILE functionality into TRACE, so that it will be clear
3864 how the wrapping and unwrapping of functions when you profile them
3865 interacts with the wrapping and unwrapping of functions when you
3866 trace them. (Actually, the functionality isn't there yet, but at least
3867 the interface specification is there. Hopefully, the functionality will
3868 arrive with some future maintenance release.)
3869 * removed host-oops.lisp
3870 * changed signature of QUIT function to allow UNIX-CODE argument
3871 * fixed READ-SEQUENCE bug
3872 * tweaked verbose GC output so that it looks more like the progress
3873 output that ANSI specifies for functions like LOAD
3874 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3875 * added <http://sbcl.sourceforge.com> to the banner information printed by