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 * bug fix: improved the handling of type declarations and the
9 detection of violations for keyword arguments with non-constant
12 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
13 * added support for the ucs-2 external format. (contributed by Ivan
15 * minor incompatible change: pretty printing of objects of type
16 (cons symbol) is, in the default pprint-dispatch-table, now
17 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
19 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
20 called later in a class's lifetime, possibly as late as when the
21 first instance of the class is created. Previously,
22 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
23 class became finalizeable.
24 * fixed bug: FILE-POSITION sometimes returned inconsistent results
25 for multibyte external-format streams. (thanks to "vbzoli")
26 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
27 with :ALLOCATION :CLASS inherited from superclasses of the
29 * fixed bug: anonymous classes can now be created using the :NAME
30 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
31 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
32 * fixed bug: core-files saved with :EXECUTABLE T can again be
33 executed when SBCL_HOME isn't set. (reported by James Knight)
34 * fixed bug: toplevel LOCALLY forms with declarations could
35 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
36 * fixed bug: printing from several different threads using different
37 values of *print-case* could cause invalid output, due to
38 some internal special variables of the printer not being bound
39 thread-locally (reported by Max Mikhanosha)
40 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
41 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
42 (reported by Pascal Costanza)
43 * fixed bug: FINALIZE-INHERITANCE is called from
44 REINITIALIZE-INSTANCE on classes when the class has previously
45 been finalized, as required by AMOP.
46 * minor code generation optimizations:
47 ** better register allocation in CLOS dispatching functions
48 ** overflow detection when coercing signed bytes to fixnums on x86-64
49 ** is now implemented with one IMUL instruction instead of three shifts
50 ** more efficient bit-vector access on x86 and x86-64
51 ** more efficient access to raw structure slots on x86 and x86-64
52 * fixed some bugs revealed by Paul Dietz' test suite:
53 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
56 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
57 * feature: thread support on Solaris/x86, and experimental thread support
59 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
61 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
62 default method for SLOT-UNBOUND.
63 * minor incompatible change: prevent the user from specializing the
64 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
65 somewhat counter to the intent of the protocol, I (CSR) think, and
66 additionally it just doesn't work in SBCL as currently
67 implemented, thanks to optimizations (that are always valid for
68 the other three SLOT-VALUEish functions, but not for the setter).
69 * minor incompatible change: the :SB-LDB feature is now enabled by
70 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
71 the low-level debugger.
72 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
73 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
74 down to an SB-SYS:FD-STREAM, allowing direct communication in
75 more cases. Temporary files and pipes are still used as a fallback
77 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
78 on the non-reentrant C functions localtime(3) and gmtime(3).
79 * bug fix: global optimization policy was not visible in LOCALLY and
81 * bug fix: class objects can be used as specializers in methods.
82 (reported by Pascal Costanza)
83 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
84 with a type error. (reported by blitz_ on #lisp)
85 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
86 failed with a type error. (reported by Pascal Bourguignon)
87 * bug fix: merging pathnames against defaults with :DIRECTORY
88 starting with '(:RELATIVE :BACK) should preserve the :BACK.
89 (reported by James Y Knight)
90 * bug fix: saving large (>2GB) cores on x86-64 now works
91 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
92 constant index and a (simple-array (signed-byte 32)) array
93 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
94 error (patch by Robert J. Macomber)
95 * feature: TIME now displays the amount of run-time spent in GC
96 * bug fix: The debugger now does a better job of respecting
97 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
98 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
99 workaround for bug 403.)
100 * bug fix: floating point exception handling now works on FreeBSD
101 (thanks to NIIMI Satoshi)
102 * fixed some bugs revealed by Paul Dietz' test suite:
103 ** MISC.641: LET-conversion were not supposed to work in late
105 * improvements to the Win32/x86 port:
106 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
107 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
109 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
110 * new feature: source path information is generated for macro-expansion
111 errors for use in IDE's like Slime (thanks to Helmut Eller)
112 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
113 * bug fix: compiler does not loop forever on an invalid type in
115 * improvement: compilation of most CLOS applications is significantly
117 * optimization: added a limited bytecode compiler for simple toplevel
118 forms, speeding up compilation and FASL loading
120 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
121 * minor incompatible change: in sbcl-0.9.11 (but not earlier
122 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
123 into subclasses of the finalized class. Now user calls to
124 FINALIZE-INHERITANCE finalize just the one class, and calls by the
125 system return before any subclasses are finalized.
126 * minor incompatible change: The reader no longer ignores errors
127 regarding non-existent packages in #+ and #- feature tests.
128 * new feature: command line options --no-sysinit, --no-userinit to
129 inhibit loading the corresponding init files
130 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
131 for sending data through UDP sockets (thanks to François-René Rideau)
132 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
133 error is signalled instead (thanks to François-René Rideau)
134 * minor incompatible change: Error signalling behaviour of lexical
135 operations violating package locks has changed slightly. Refer to
136 documentation on package locks for details.
137 * enhancement: EVAL can process IF-expressions without resorting to the
139 * bug fix: Some operations involving SIN, COS, or TAN weren't being
140 constant-folded properly due to missing out-of-line functions.
141 (reported by Mika Pihlajamäki)
142 * bug fix: LISTEN sometimes returned T even in cases where no data was
143 immediately available from the stream
144 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
145 were reversed. (reported by Levente Mészáros)
146 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
147 when given a vector displaced to an adjustable array. (reported
149 * bug fix: derivation of float boundaries from numbers outside the
150 appropriate float range (reported by John Wiseman)
151 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
153 * bug fix: precomputing cache entries for generic functions with
154 some subclasses of specializers as yet invalid does not attempt to
155 fill a cache line with a negative offset. (reported by Levente
157 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
158 allow condition class objects as arguments to DOCUMENTATION and
159 (SETF DOCUMENTATION); only find and set documentation for
160 structure names for the STRUCTURE doc-type. (suggested by Gary
162 * improvements to the Win32/x86 port:
163 ** (user-homedir-pathname) and default initialization file
164 locations now know about the user's "Documents and Settings"
165 directory (thanks to Yaroslav Kavenchuk)
166 ** run-program is implemented (thanks to Mike Thomas)
167 ** sockets support (thanks to Timothy Ritchey)
168 ** better backtrace support (thanks to Alastair Bridgewater)
169 ** sb-grovel supported
170 ** asdf-install and sb-posix work somewhat
171 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
172 * improvements to the Solaris/x86 port:
173 ** works on Solaris 11/Solaris Express
174 ** floating-point exception handling support
175 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
176 * fixed some bugs revealed by Paul Dietz' test suite:
177 ** REMOVE-METHOD returns its generic function argument even when
178 the method is not one of the generic functions' methods.
179 ** objects declared as MEMBER types can be admissible arguments to
181 ** printing characters should simply be printed by the FORMAT ~:C
183 ** compiler failure when compiling functions with hairy constant
184 defaults for optional parameters.
185 ** compiler produces wrong code when MAYBE-INLINE-expanding a
186 function, which is already optimized.
188 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
189 * new platform: experimental support for SBCL x86/Darwin, including
190 MacOS X 10.4.5 on Intel.
191 * new feature: Unicode character names are now known to the system
192 (through CHAR-NAME and NAME-CHAR).
193 * new feature: the filesystem location of SBCL's core file is
194 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
195 * minor incompatible change: the contrib modules SB-POSIX and
196 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
197 this change is to make it easier to distribute
198 location-independent binaries.
199 * bug fix: as implied by AMOP, standardized classes no longer have
200 slots named by external symbols of public packages. (reported by
202 * optimization: calling functions via constant symbols -- as in
203 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
204 via the function object as in (FUNCALL #'FOO).
205 * optimization: on x86 and x86-64, the calling convention for the
206 case of dealing with an unknown number of values has been altered
207 to be friendlier to the prediction heuristics implemented,
208 particularly with reference to CALL and RET pairing. (thanks to
209 Alastair Bridgewater)
210 * optimization: on x86, the code for access to thread-local symbol
211 values and binding/unbinding of thread-local symbols is smaller.
212 (thanks to Alastair Bridgewater)
213 * enhancement: CONSTANTP is now able to determine constantness of
214 more complex forms, including calls to constant-foldable standardized
215 functions and some special forms beyond QUOTE.
216 * fixed bug: occasional GC crashes on Solaris/x86
217 * optimization: x86-64 supports stack allocation of results of simple
218 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
219 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
220 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
221 (thanks to James Knight)
222 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
223 by the standard (thanks to Stephen Compall)
225 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
226 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
227 be used for bundling the runtime and the core file into one
228 executable binary. This feature is not currently supported on all SBCL
229 platforms. (thanks to James Bielman and NIIMI Satoshi)
230 * new feature: a generational or ephemeral garbage collector is now
231 the default on the PowerPC platform (both Linux and Darwin). The
232 old Cheney (stop and copy) collector is a build-time option.
233 (thanks to Cyrus Harmon, after Raymond Toy)
234 * minor incompatible change: the method by which SBCL finds its
235 contributed modules has changed; it no longer relies on symbolic
236 links from an $SBCL_HOME/systems directory, but searches directly
237 in the subdirectories of $SBCL_HOME.
238 * enhancement: the dynamic heap size on the Linux/PPC platform is
239 markedly larger, even using the older Cheney garbage collector.
240 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
241 certain complicated string types. (reported by Gary King)
242 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
243 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
244 * fixed bug: DOCUMENTATION on structures no longer signals an
245 error if no structure type of the right name exists. (reported by
247 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
248 applicable non-standard primary or :AROUND method on
249 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
250 no longer cause unbound variable errors. (reported by Kevin Reid)
251 * fixed bug: metacircle resolution in cases where methods have slots
252 added before the slots from STANDARD-METHOD. (reported by Jean
254 * fixed bug: the Power PC assembly code for calling into lisp
255 sometimes computed its return address wrongly (depending on the
256 15th bit of the address, fixed at link time). This used to
257 manifest itself in a segmentation violation while building PCL.
258 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
259 many others over the years)
260 * fixed bug: ROOM no longer reports silly numbers for stack usage if
261 the stack pointer (treated as a signed integer) is negative.
262 (thanks to Peter van Eynde)
264 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
265 * new platform: experimental support for the Windows operating
266 system has been added. (thanks to Alastair Bridgewater)
267 * fixed several bugs in and robustified the PPC FFI (including
268 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
269 * bug fix: allow non-simple string symbol names (reported by Paul
271 * bug fix: interrupt handling on NetBSD (thanks to Richard M
273 * bug fix: saving a core corrupted callbacks on x86/x86-64
274 * bug fix: closed a loophole in metacircularity detection and
275 grounding in the PCL implementation of CLOS.
276 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
277 (reported by tomppa on #lisp)
278 * bug fix: clear the direction flag on Lisp -> C transitions, as
279 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
280 (reported by Andrej Grozin and Hendrik Maryns)
281 * optimization: major improvements to GC efficiency on GENCGC platforms
282 * optimization: faster implementation of EQUAL
283 * optimization: emit more efficient opcodes for some common
284 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
285 * optimization: several other minor code-generation improvements on x86-64
286 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
288 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
289 * minor incompatible change: (SETF CLASS-NAME) and (SETF
290 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
291 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
292 by ANSI as a generic function, and for consistency (SETF
293 GENERIC-FUNCTION-NAME) is treated likewise.
294 * fixed bug #233.b: make constraint propagation notice when a variable
295 value is changed after it is referenced but before it is used
296 * fixed bug #296: no more arbitrary behaviour from filenames with
297 odd characters as --load arguments. (reported by Adam Warner)
298 * fixed bug #390: :CHARACTER-SET pathname components now work as
299 expected. (reported by Tim Daly Jr)
300 * fixed bug #391: complicated :TYPE intersections in slot
301 definitions no longer cause an error in PCL internals.
302 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
303 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
304 returning the number of octets which would be written to the
305 file-stream. (thanks to Robert J. Macomber)
306 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
307 arguments to the internal stream functions. (thanks to David
309 * bug fix: stack exhaustion is now handled on the x86/SunOS
310 platform. (thanks to Daisuke Homma)
311 * bug fix: more accurate ROOM results on GENCGC platforms
312 * optimization: improved type inference for arithmetic-for
313 index variables in LOOP
314 * optimization: faster floating-point SQRT on x86-64
315 * fixed some bugs revealed by Paul Dietz' test suite:
316 ** DOCUMENTATION returns NIL instead of "" for method combinations
317 that don't have a docstring
319 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
320 * minor incompatible change: (SETF CLASS-NAME) and (SETF
321 GENERIC-FUNCTION-NAME) are no longer generic functions, and
322 therefore are not customizeable by user code (as seems to be at
323 least permitted and maybe required by AMOP). As a consolation,
324 however, the SBCL implementation of these functions now calls
325 REINITIALIZE-INSTANCE as specified by AMOP.
326 * bug fix: slot-definition documentation is propagated as per ANSI
327 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
328 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
329 argument, as do eslotd initialization methods. (from Pascal
330 Costanza's "Closer" project)
331 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
332 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
334 * bug fix: it is now possible to have more than one subclass of
335 STANDARD-GENERIC-FUNCTION without causing stack overflow.
336 (reported by Bruno Haible, Pascal Costanza and others)
337 * bug fix: the dependent update protocol now works for generic
338 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
340 * bug fix: condition-class instances corresponding to
341 DEFINE-CONDITION forms are now created eagerly. (reported by
342 Kalle Olavi Niemitalo on comp.lang.lisp)
343 * bug fix: floating point printing is more accurate in some
344 circumstances. (thanks to Simon Alexander)
345 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
346 merged with *DEFAULT-PATHNAME-DEFAULTS*.
347 * bug fix: callbacks on OS X now preserve stack-alignment.
348 (thanks to Cyrus Harmon)
349 * enhancement: the x86-64 disassembler is much better at
350 disassembling SSE instructions. (thanks to Lutz Euler)
351 * enhancement: CHECK-TYPE on a variable now allows type-inference
352 (thanks to Vincent Arkesteijn)
353 * optimization: improved performance of EUC-JP external format.
354 (thanks to NIIMI Satoshi)
355 * optimization: performance improvements to IO on file streams of
356 :ELEMENT-TYPE CHARACTER
357 * optimization: much faster memory allocation on x86-64
358 * optimization: faster garbage collections (latency and throughput)
360 * optimization: faster bignum subtraction and division on x86 and x86-64
361 (thanks to Lutz Euler)
362 * optimization: more accurate type-inference for loops that use a
363 floating point index variable or a negative step.
365 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
366 * bug fix: add a workaround to SBCL looping infinitely at startup on
367 Linux kernels with apparently buggy implementations of personality().
368 (thanks to Svein Ove Aas)
369 * bug fix: Unicode symbols are correctly printed in LDB backtraces
370 (thanks to David Lichteblau)
371 * bug fix: local bindings shadow global symbol macros for
372 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
373 * optimization: non-open coded uses of numeric comparison operators
374 (e.g. >) no longer cons when called with more than one parameter
375 on platforms supporting dynamic-extent allocation.
376 * enhancement: saving cores with foreign code loaded is now supported
377 on MIPS/Linux in addition to the previously supported platforms.
378 * bug fix: FIND-RESTART now tests for activity, not applicability when given
379 a restart object as identifier. (reported by Helmut Eller for CMUCL)
380 * bug fix: division by zero in sb-sprof when no samples were collected
381 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
382 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
383 (thanks to Alexander Kjeldaas)
384 * new feature: ignoring the return values of destructive functions
385 like NREVERSE signals a compile-time style-warning.
386 (thanks to Kevin Reid)
387 * new feature: the alignment of alien structure fields can be
388 explicitly specified. (thanks to Cyrus Harmon)
389 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
390 and dump core on SIGQUIT
392 ** incompatible change: threads do not inherit values of specials
393 from their parents (see manual)
394 ** bug fix: threads stacks belonging to dead threads are freed by the
395 next exiting thread, no need to gc to collect thread stacks anymore
396 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
397 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
398 ** bug fix: dynamic variable and thread start related gc lossage
399 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
401 * fixed some bugs revealed by Paul Dietz' test suite:
402 ** SUBTYPEP is slightly more accurate on heinously complicated
403 CONS types where some of the members have uncertain (in the
404 NIL, NIL sense) type relationships to each other.
406 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
407 no longer purified unless :PURIFY T is explicitly specified.
408 ** Non-purified cores are significantly smaller than before
410 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
411 * new feature: timers based on Zach Beane's excellent timer package
412 * added support for the following external formats: koi8-u,
413 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
414 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
415 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
416 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
417 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
418 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
419 * incompatible change: a threaded SBCL will no longer revert to
420 non-threaded mode on non-NPTL systems, but refuse to start entirely.
421 * bug fix: interrupts are disabled until startup is complete; no
422 more sigsegvs when receiving a signal to soon
423 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
425 * bug fix: add a workaround for the memory randomization features in
426 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
427 workaround will only be in effect on systems with the proc filesystem
429 * bug fix: printing objects of type HASH-TABLE signals a
430 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
432 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
433 have been running for over 50 days. (reported by Gilbert Baumann)
434 * bug fix: the logic for getting names of functions gets less
435 confused when confronded with alternate-metaclass
436 funcallable-instances. (reported by Cyrus Harmon)
437 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
438 consistent, even on internal alternate-metaclass objects.
439 * bug fix: flush closure information collected by physical
440 environment analysis prepass before the main pass. (bug reported
442 * bug fix: compiler pack phase does not modify a hashtable, which is
443 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
444 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
445 may be expanded. (reported by Alexander <malishev> on c.l.l)
446 * bug fix: no more style-warnings when compiling code using LAST
447 under high-SPEED low-SPACE settings. (reported by David Wallin
449 * fixed some incompatibilities between SBCL's MOP and the MOP
451 ** the METAOBJECT class is now implemented;
452 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
453 STANDARD-OBJECT, as required;
454 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
455 now compatible (as required by VALIDATE-SUPERCLASS); there
456 remains a consistency requirement over the presence or absence
457 of the FUNCTION class in the superclass list of finalized
458 classes; see the manual for more details;
459 ** the :AROUND method for COMPUTE-SLOTS on
460 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
461 requested slot ordering.
463 ** bug fix: parent thread now can be gc'ed even with a live
465 ** bug fix: binding a special with PROGV to no value is not
466 the same as that symbol not having been bound (thanks to
468 ** bug fix: binding specials is thread safe (thanks to
470 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
471 and SB-SPROF do not die with 'no handler for signal XX in
472 interrupt_handle_now(..)' anymore
473 ** bug fix: WITH-TIMEOUT works with multiple running threads
474 * fixed some bugs revealed by Paul Dietz' test suite:
475 ** ENSURE-GENERIC-FUNCTION should take a method class object for
476 the :method-class keyword argument.
478 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
479 * new port: the Solaris operating system on x86 processors is now
480 mostly supported, though some rough edges in the environment
481 remain. (thanks to Daisuke Homma)
482 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
483 space for its heap. (thanks to Thiemo Seufer)
484 * optimization: SBCL on MIPS platforms now supports dynamic-extent
485 closures. (thanks to Thiemo Seufer)
486 * minor incompatible change: eof selects abort in the debugger.
487 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
488 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
490 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
491 deprecated, and will go away in a future revision of SBCL.
492 * minor incompatible change: GC-ON and GC-OFF are no longer
493 implemented with a counter, it does not matter how many times gc
494 is switched on or off
495 * bug fix: discriminating functions for generic function classes
496 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
497 make invalid assumptions about method precedence order. (reported
499 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
500 platforms. (thanks to Thiemo Seufer)
501 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
502 * bug fix: correct pathname printing with printer escaping is on.
503 (thanks to Kevin Reid)
504 * bug fix: complex VOP definitions in "user-space" no longer trigger
505 package locks. (reported by Zach Beane)
506 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
507 for funcallable-instance functions, and is no different from
509 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
510 characters in the current readtable. (reported by Nicholas Neuss)
511 * bug fix: SUBTYPEP on various CONS types returns more a more
512 accurate acknowledgment of its certainty.
513 * optimizations: REMOVE-DUPLICATES now runs in linear time on
514 lists in some cases. This partially fixes bug 384.
515 * flush all standard streams before prompting in the REPL and the
517 * bug fix: signal handling and triggering gc do not conflict
518 directly anymore, in particular a high frequency sb-sprof does
519 not prevent gc from running
520 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
521 approximation for timezone and DST information between the
522 universal time epoch and the smallest negative 32-bit time_t.
523 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
524 year 1899 so long as the encoded time is non-negative.
525 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
526 the correct answer for non-constant rotate amounts when performing
527 an inline 32-bit rotation.
529 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
530 there is only one thread in the session
531 ** bug fix: memory leak for streams created in one thread and
532 written to in another
533 ** bug fix: lockup when compiled with gcc4
534 ** bug fix: race that allows the gc to be triggered when gc is
536 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
537 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
539 ** bug fix: finished threads are gc'ed properly
540 * fixed some bugs revealed by Paul Dietz' test suite:
541 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
542 has arguments with a different set of applicable methods from
543 the orignal arguments.
544 ** The type error thrown by MAP now has a correct expected-type
546 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
547 name a compiled function.
548 ** Three MISC tests where a large bignum was improperly coerced to
549 a float that couldn't represent that bignum during type
550 derivation were fixed.
551 ** SUBTYPEP can now handle types involving the negation of a
552 list-form FUNCTION type.
553 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
554 as (COMPLEX (AND RATIO (NOT FIXNUM))).
555 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
557 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
558 * New feature: Experimental support for bivalent streams: streams
559 opened with :element-type :default now allow character and binary
560 (unsigned-byte 8) I/O
561 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
562 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
564 * bug fix: no more highly sporadic "couldn't check whether ~S is
565 readable" when reading a stream and an interrupt hits in the middle
566 of a select system call
567 * compiler better recognizes complex arrays (reported by Eduardo
569 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
570 for variables on SBCL built with linkage-tables. (reported by Luis
572 * various error reporting improvements.
573 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
574 (Thanks to Thiemo Seufer)
575 * bug fix: nested reader invokations work correctly
576 * bug fix: it is possible to have simultaneous references to foreign
577 code and foreign data with the same name.
579 ** added x86-64 support
580 ** incompatible change: the threading api now works with thread
581 objects instead of thread ids
582 ** bug fix: threads are protected from signals and interruption when
583 starting up or going down
584 ** bug fix: a race where an exiting thread could lose its stack to gc
585 ** bug fix: don't halt on infinite error in threads if possible
586 ** fixed numerous gc deadlocks introduced in the pthread merge
587 ** bug fix: fixed thread safety issues in read and print
588 ** bug fix: debugger doesn't hang on session lock if interrupted at
589 an inappropriate moment
590 ** bug fix: run-program is now thread safe(r)
591 ** bug fix: inner with-recursive-lock no longer releases the mutex
592 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
593 * fixed some bugs revealed by Paul Dietz' test suite:
594 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
595 EXPECTED-TYPE slots filled.
596 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
598 ** MAKE-CONDITION accepts classes as type-designators.
599 ** COMPILE may never return NIL.
600 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
601 range before calling Unix time functions
603 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
604 * numerous signal handling fixes to increase stability
605 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
606 * minor incompatible change: we now correctly canonize default
607 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
608 as per the MOP, rather than the historical (INITARG INITFUNCTION
609 INITFORM). (reported by Bruno Haible)
610 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
611 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
612 for more information.
613 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
614 pathname is a directory pathname.
615 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
616 * dynamic space size on PPC has been increased to 768Mb. (thanks to
618 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
619 :METACLASS argument in addition to a class name. (reported by
620 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
621 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
622 (reported by Bruno Haible; patch from Gerd Moellmann)
623 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
625 * bug fix: more cleanups to the floating point exception handling on
626 x86-64 (thanks to James Knight)
627 * bug fix: the compiler does not try to constant fold calls of
628 COERCE and BIT-* functions when they return freshly constructed
629 objects. (reported by Nikodemus Siivola and Paul Dietz)
630 * optimization: improved the MIPS versions of generic (in the
631 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
632 * optimization: direct conversion of (unsigned-byte 32) to floats on
633 the PowerPC platform.
634 * optimization: structure instances with raw slots now use less
635 memory, and probably show better memory locality. (thanks to
637 * optimization: DYNAMIC-EXTENT declarations for lists and closures
638 are treated as requests for stack allocation on the x86-64,
639 Alpha-32, PPC and SPARC platforms.
640 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
641 the wrong file descriptor; implementation of SOCKET-OPEN-P.
642 (thanks to Tony Martinez)
644 ** gcing a dead thread can no longer lead to lockups
645 ** threads block signals until they are set up properly
646 ** errno is no longer shared by threads
647 ** interrupt-thread restores the eflags register on x86
648 ** fixed some lockups due to gc/thread interaction
649 * fixed some bugs revealed by Paul Dietz' test suite:
650 ** invalid dotted lists no longer raise a read error when
652 ** signal an error if a symbol that names a declaration is used
653 as the name of a type, or vice versa
654 ** allow using the (declare (typespec var*)) abbreviation for
655 (declare (type typespec var*)) with all type specifiers
656 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
657 ** always return NIL from PPRINT-POP when OBJECT is NIL
658 ** don't signal errors when pretty-printing malformed LABELS,
659 FLET or MACROLET forms
660 ** declarations in a DOLIST body are also in scope for the
662 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
664 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
667 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
668 * fixed cross-compiler leakages that prevented building a 32-bit
669 target with a 64-bit host compiler.
670 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
671 opened with :IF-EXISTS :OVERWRITE.
672 * fixed bug 281: error for an invalid qualifier in a short-form method
673 combination method is not signalled until the faulty method is called.
674 * bug fix: iteration variable type inferrer failed to deal with open
675 intervals. (reported by Alan Shields)
676 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
677 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
678 or more runtime options were provided to the sbcl binary.
679 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
680 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
681 * optimization: there's now a fast-path for fixnum arguments in the
682 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
683 * optimization: the code generated on x86-64 is more compact thanks
684 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
685 * bug fix: floating-point exception handling now partly works on
686 x86-64. (Thanks to James Knight)
687 * improvement to the MIPS backend from Thiemo Seufer: C-style
688 64-bit long long arguments and return values to alien functions
690 * fixed some bugs revealed by Paul Dietz' test suite:
691 ** the type-error signalled from WARN has a filled-in DATUM slot.
692 ** the type-error required when a stream is not associated with
693 a file has the stream as its datum.
694 ** type-errors on single-floats on x86-64 no longer have
695 :INVALID-OBJECT as the datum
696 ** the type-errors signalled for invalid function names now have
697 a correct expected type
698 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
699 for structures defined with a :TYPE. Documentation strings for
700 typed structures are no longer immediately discarded
701 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
702 broadcast streams and synonym streams. FILE-LENGTH now also works
703 on broadcast streams.
705 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
706 * incompatible change: the --noprogrammer option, deprecated since
707 version 0.7.5, has been removed. Please use the equivalent
708 --disable-debugger option instead.
709 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
711 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
712 inoperational for a while now) has been completely removed.
713 * null lexical environments are now printed as #<NULL-LEXENV>,
714 significantly reducing the amount of clutter in typical backtraces.
715 * documentation on weak pointers, finalization, and after GC hooks
716 has been added to the manual.
717 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
718 as other specialized array types, is much faster. SUBSEQ and
719 COPY-SEQ on such arrays have also been sped up.
720 * optimization: EQL is now more efficient when at least other argument
721 is known to be of type (OR FIXNUM (NOT NUMBER)).
722 * fixed bug: the runtime is now less vulnerable to changes in the
723 size of the SBCL object on OS X, and virtual memory is reserved for
724 all spaces that need to be at a fixed address.
725 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
726 * fixed bug: finalizers and after GC hooks that cause consing are now
728 * fixed bug: compiler error messages and summaries are now printed to
729 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
730 * fixed inference of the upper bound of an iteration variable.
731 (reported by Rajat Datta).
732 * fixed bug 211e: calling local functions with duplicated constant
733 keyword argument no longer causes a bogus style warning about an
735 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
736 ftype declaration to be disregarded. (reported by Dave Roberts)
737 * fixed bug 373: caused by erronous compilation of references to alien
738 variables in the runtime on ppc/darwin.
739 * fixed bug 376: CONJUGATE type deriver.
740 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
741 (reported by Baughn on #lisp)
742 * a cross-compiler bug on non-x86 platforms has been identified and
743 fixed. (thanks to Bruno Haible)
744 * improvements to the MIPS runtime code for increased stability.
745 (thanks to Thiemo Seufer)
746 * increased the maximimum compact environment size to allow
747 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
748 * partial workaround for bug 135: don't name the function we're
749 calling for hairy cases of EVAL, so as not to accumulate one environment
750 entry per call to EVAL. (reported by Kevin Reid)
751 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
752 * optimization: type testing for non-vector arrays should be faster.
753 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
755 * bug fix: setting 31st element of a bit vector to zero did not work
757 * bug fix: redefining a class definition which failed due to a
758 previous accessor / function clash now works (but see BUGS entry
759 #380 for more problems in this area). (thanks to Zach Beane)
760 * the long form of DEFINE-METHOD-COMBINATION disables method group
761 checking when given a single method group with pattern *. (thanks
763 * on x86 compiler supports stack allocation of results of simple
764 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
765 * support for building and running on Mac OS X 10.4 "Tiger" has been added
766 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
767 * fixed some bugs related to Unicode integration:
768 ** the restarts for recovering from input and output encoding
769 errors only appear when there is in fact such an error to
771 * fixed some bugs revealed by Paul Dietz' test suite:
772 ** MISC.549 and similar: late transformation of unsafe type
773 assertions into derived types caused unexpected code
775 ** SCALE-FLOAT type deriver is less wrong.
776 ** type derivers for EXP, LOG and similar functions compute result
777 types for complex arguments better.
778 ** (MISC.563) CONJUGATE type deriver works for very restricted
780 ** out-of-line type testers for character strings are available.
781 ** EQUAL compiler transform understands specialness of objects
783 ** accessing double-floats stored on the stack now works on x86-64.
784 ** debugger internals could sometimes create invalid lispobjs,
785 resulting in GC crashes.
786 ** MISC.548: type check weakening can convert required type into
788 ** initialization forms for bindings are not in scope of free special
791 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
792 * incompatible change: thread support for non-NPTL systems has
793 been removed - locking is buggy and unreliable. A threaded
794 SBCL build will now warn at startup and refuse to create
795 new threads, unless futex support is detected in the kernel
796 * incompatible change: the top level REPL now has only an ABORT
797 restart associated with it, not TOPLEVEL and ABORT as it used to.
798 TOP and TOPLEVEL are now available as debugger commands for
799 returning to the top level.
800 * incompatible change: forms evaluated in the REPL now use the
801 global optimization policy.
802 * incompatible change: user- and system-initialization files are
803 no longer processed with LOAD, but by READ and EVAL; hence the
804 global optimization policy, startup package, readtable, etc,
806 * The .fasl file format number has been incremented because of
807 various incompatible changes.
808 * internal entry point details and argument counts no longer appear
809 in backtraces unless explicitly requested by setting
810 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
811 * built-in and standard functions no longer have names like "top
812 level local call to FOO".
813 * fixed bug 32: functions defined in non-null lexical environments
814 now have more legible printed representation
815 * fixed bug 33: functions defined in non-null lexical environemnts
816 are now more amenable to inspection by INSPECT.
817 * workaround for bug 354: XEPs no longer appear in backtraces unless
818 explicitly requested.
819 * fixed bug: receiving the signal which results from attempting to
820 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
821 SIGBUS on other *BSDs) on architectures where the C stack is also
822 the Lisp stack (x86 and x86-64) from foreign code no longer leads
823 to debugger confusion or wild instability. (reported by Cheuksan
825 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
826 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
827 (reported by Lutz Euler)
828 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
829 compiled code. (reported by Paul Dietz)
830 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
831 specialized parameter to a method to something that is not TYPEP
832 the specializer is now possible.
833 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
834 face of package deletion.
835 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
836 pathname. (reported by David Tolpin on c.l.l)
837 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
838 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
839 STRING-STREAM and FILE-STREAM, respectively.
840 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
841 than previously; in addition, its test suite is now run on build.
842 (thanks to Luke Gorrie)
843 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
844 * optimization: added a immediate representation for single-floats
846 * fixed some bugs revealed by Paul Dietz' test suite:
847 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
848 ** attempting to create a package with a colliding nickname causes
849 correctable errors to be signalled.
850 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
851 ** several x86-64 backend bugs related to sign-extension of immediate
854 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
855 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
856 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
858 * fixed loading of multiply forward-referenced layouts.
859 (thanks to Cheuksan Wang)
860 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
861 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
862 (see COMPILE-FILE documentation for details of :PRINT option)
863 * fixed bugs 19 and 317: fixed-format floating point printing is
864 more accurate. This also fixes a bug reported by Adam Warner
865 related to the ~@F format directive.
866 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
868 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
869 dispatch table if the from-char is a dispatch macro character.
870 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
871 by the wordsize no longer ignore the last word. (reported by Lutz
873 * fixed bug in type checking of dynamic-extent variables. (reported
875 * optimization: sequence traversal functions use their freedom to
876 coerce function designators to functions.
877 * optimization: code with many calls to CLOS methods specialized on
878 CLOS classes has had redundant type checks removed.
879 * optimization: added declarations to speed up operations that access
880 the internal character database (for example STRING-UPCASE)
881 * optimization: comparison operations between floats and sufficiently small
882 fixnums no longer create extra rationals
883 * fixed some bugs related to Unicode integration:
884 ** portions of multibyte characters at the end of buffers for
885 character-based file input are correctly transferred to the
886 start of the buffer at the next read.
887 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
888 passing it through to OPEN.
889 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
890 argument given to internal calls to OPEN.
891 ** the built-in comment readers (introduced by character sequences
892 ";" and "#|") are more forgiving to encoding errors; they will
893 STYLE-WARN and then attempt to resync the stream at a character
894 boundary. (thanks to Teemu Kalvas)
895 * fixed some bugs in the x86-64 port:
896 ** Negative short int return values from c-calls are sign-extended
898 ** The stack is aligned to 16-bytes for c-calls, as required by
899 the ABI. (thanks to Cheuksan Wang)
900 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
901 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
902 for enums. (thanks to Vincent Arkesteijn)
903 ** Multiple small optimizations and bugfixes for floating point
905 * fixed some bugs revealed by Paul Dietz' test suite:
906 ** Space, Tab, Linefeed, Return and Page have the invalid
907 secondary constituent character trait.
908 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
910 ** WITH-INPUT-FROM-STRING should only update the index place on
912 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
914 ** Bit-array operations (BIT-AND and similar) worked incorrectly
915 with one-dimensional arrays with fill pointers.
916 ** TYPE-OF failed on a complex with an integer realpart and a
918 ** compiler failure during type inference for the code of form
919 (IF (EQL X (THE ...)) ...) (MISC.535).
921 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
922 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
923 platform. The port supports 61-bit fixnums, large memory spaces
924 and reloading shared object files.
925 * enhancement: saving cores with foreign code loaded is now
926 supported on ppc/Darwin in addition to the previously supported
928 * enhancement: the statistical profiler now walks deeper into the
929 call stack for more meaningful call-graphs and accrued time
930 reports (x86/x86-64 only). It also now reports time spent in
932 * enhancement: it is now possible to trace most individual methods
933 of a generic function in addition to tracing the generic function
935 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
937 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
938 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
939 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
940 produces an error. (thanks to Vincent Arkesteijn)
941 * bug fix: NAMESTRING on pathnames with :WILD components in their
942 directories works correctly. (thanks to Artem V. Andreev)
943 * fixed bug 125: compiler preserves identity of closures. (reported
945 * bug fixed: functions with &REST arguments sometimes failed with
946 "Undefined function" when compiled with (DEBUG 3). (reported by
948 * bug fix: overflow during compiling of setting element of a bit
949 vector with constant index and value. (reported by Timmy Douglas)
950 * build fix: fixed the dependence on *LOAD-PATHNAME* and
951 *COMPILE-FILE-PATHNAME* being absolute pathnames.
952 * on x86 compiler partially supports stack allocation of dynamic-extent
954 * GO and RETURN-FROM do not check the extent of their exit points
955 when compiled with SAFETY 0.
956 * fixed some bugs related to Unicode integration:
957 ** encoding and decoding errors are now much more robustly
958 handled; it should now be possible to recover even from invalid
959 input or output to the terminal. (thanks to Teemu Kalvas)
960 ** provided a first cut at implementing STRING-TO-OCTETS and
961 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
962 ** altered the SB-MD5 contributed module slightly, changing the
963 interface just enough for it to be supportable for builds where
964 lisp characters are not eight bits.
965 * fixed some bugs revealed by Paul Dietz' test suite:
966 ** the FORMATTER-generated functions for ~V[ conditionals require
967 the correct number of arguments.
968 ** READ-FROM-STRING returns the mandated second value when applied
969 to displaced strings.
970 ** the #\Rubout and #\Backspace characters are treated as invalid
971 constituent characters by the tokenizer.
973 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
974 * new feature: reloading changed shared object files with
975 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
976 * new feature: references to foreign variables and functions
977 can now be compiled and loaded before the corresponding shared
978 object file is loaded, as long as the foreign definitions are
979 available at runtime.
980 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
981 supported. (thanks to Dan Debertin)
982 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
983 just keywords. (thanks to Vincent Arkesteijn)
984 * fixed bug #331: structure-class instances corresponding to
985 DEFSTRUCT forms are now created eagerly.
986 * fixed bug #345: backtraces from calls to undefined functions work
987 on x86 as well. Related bug #61 is now also partially fixed on x86
988 (backtraces from throws to unknown catch tags.)
989 * bug fix: lambda-list parsing is now stricter vrt. order and number
990 of lambda-list keywords.
991 * bug fix: as specified by AMOP, an error is signalled if a
992 class-option appears multiple times in a DEFCLASS form. (reported
994 * bug fix: RANDOM can be compiled when the compiler derives the type
995 of its numeric argument as a disjoint set of small integers.
996 (reported by Paul Dietz)
997 * bug fix: starting a core saved with shared objects loaded when
998 those objects are not available no longer causes threaded SBCL to
999 hang. (reported by Sean Ross)
1000 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1002 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1003 argument, which must always be NIL. (reported by Kalle Niemitalo)
1004 * bug fix: printing 1.0d+23 no longer results in an error.
1005 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1006 * bug fix: structure slot setters preserve evaluation order. (thanks
1008 * fixed some bugs related to Unicode integration:
1009 ** RUN-PROGRAM can allow its child to take input from a Lisp
1010 stream. (reported by Stefan Scholl)
1011 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1012 locales. (reported by Ken Causey)
1013 * fixed some bugs revealed by Paul Dietz' test suite:
1014 ** INCF, DECF and REMF evaluate their place form as specified in
1016 ** FORMATTER expands ~{ ~} iteration directives with V or #
1017 parameters correctly.
1018 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1019 consequent uses no arguments correctly.
1020 ** the system has a partial understanding of the (COMPLEX RATIO)
1022 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1025 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1026 * new feature: a build-time option (controlled by the :SB-UNICODE
1027 keyword feature, enabled by default) for building the system with
1028 support for the entire 21-bit character space defined by the
1030 * new feature: the system now has rudimentary external-format
1031 support; the primary user-visible change at this time is that
1032 characters with the high bit set (such as lower-case-e-acute) will
1033 print correctly to a terminal in a UTF-8 environment.
1034 * minor incompatible change: BASE-CHAR no longer names a class;
1035 however, CHARACTER continues to do so, as required by ANSI.
1036 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1037 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1038 has been moved to the SB-EXT package (temporarily re-exported from
1040 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1041 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1043 * fixed bug #351: better error-handlind and reporting for malformed
1045 * fixed bug #350: bignum-printing is now more memory-efficient,
1046 allowing printing of very large bignums, eg. (expt 2 10000000).
1047 (reported by Bruno Haible)
1048 * fixed bug #302: better primitive-type selection for intersection
1050 * fixed bug #308: non-graphic characters now all have names, as
1051 required. (reported by Bruno Haible)
1052 * bug fix: redefining a class with different superclasses now correctly
1053 removes it from the direct-subclasses of its previous superclasses.
1054 (reported by David Morse)
1055 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1056 new value now works. (reported by Bruno Haible)
1057 * bug fix: correct canonicalization of multiple non-standard slot
1058 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1059 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1060 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1061 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1062 now exists, an signals an error.
1063 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1064 during macroexpansion for non-iteration variables as well. (reported
1065 by Bruno Haible for CMUCL)
1066 * bug fix: Cyclic structures and unprintable objects in compiler
1067 messages no longer cause errors. (reported by Bruno Haible)
1068 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1069 and READ-FROM-STRING all now return a primary value of NIL if
1070 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1071 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1072 (reported by Bruno Haible for CMUCL)
1073 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1074 do not designate a condition. (reported by Bruno Haible for
1076 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1077 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1078 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1079 permitting resolution in favour of any of the conflicting symbols.
1080 (reported by Bruno Haible for CMUCL)
1081 * bug fix: EQUAL compiler optimizations is less aggressive on
1082 strings which can potentially compare true despite having distinct
1083 specialized array element types.
1084 * bug fix: unit enumerations can be defined without dividing by
1085 zero. (thanks to Vincent Arkesteijn)
1086 * FORMAT compile-time argument count checking has been enhanced.
1087 (report from Bruno Haible for CMUCL)
1088 * a partial workaround for the bug 262: the compiler does not try to
1089 inline-expand a local function doing RETURN-FROM from a deleted
1090 BLOCK. (thanks to Peter Denno for the bug report and to David
1091 Wragg for the simple test case)
1092 * fixed some bugs revealed by Paul Dietz' test suite:
1093 ** RENAME-PACKAGE allows all package designators as new package
1095 ** constraint propagation and lambda variable substitution are
1096 more cautious in dealing with partially deleted code.
1097 ** compiler sometimes lost reoptimization passes.
1098 ** CERROR, given a condition as condition designator, passes its
1099 remaining arguments to the continue format control without
1101 ** Case-altering FORMAT directives work correctly on non-ASCII
1103 ** The REAL type specifier handles bounds outside the floating
1104 point ranges without signalling FLOATING-POINT-OVERFLOW.
1105 ** Functions with IR1-transformations can create intercomponent
1106 references to global functions.
1107 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1109 ** FORMAT ~R treats a nil value for its first parameter correctly.
1111 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1112 * enhancement: saving cores with foreign code loaded is now
1113 supported on x86/NetBSD and sparc/Linux in addition to the previously
1114 supported platforms.
1115 * bug fix: on some platforms repeated installations caused multiple
1116 copies of HTML documentation to be installed -- should not happen
1117 any more. (reported by Stefan Scholl)
1118 * bug fix: parsing self-recursive alien record types multiple times
1119 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1120 original patch by Helmut Eller for CMUCL)
1121 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1122 (thanks to Richard Kreuter)
1123 * bug fix: defining classes whose accessors are methods on existing
1124 generic functions in other (locked) packages no longer signals
1125 bogus package lock violations. (reported by François-René Rideau)
1126 * bug fix: special variables as DEFMETHOD parameters no longer have
1127 associated bogus type declarations. (reported by David Wragg and
1129 * bug fix: read-write consistency on streams of element-type
1130 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1131 * bug fix: redefiniton of the only method of a generic function with
1132 no DEFGENERIC no longer emits a full WARNING. In addition,
1133 redefinition of generic functions with no DEFGENERIC to an
1134 incompatible lambda list now signals an error. (thanks to Zach
1136 * bug fix: DEFGENERIC now works even when there's a function of the
1137 same name in an enclosing lexical environment. (thanks to Zach
1139 * fixed compiler failure, caused by instrumenting code during
1140 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1141 * optimization: added loop analysis and improved register allocation
1142 * fixed some bugs revealed by Paul Dietz' test suite:
1143 ** POSITION on displaced vectors with non-zero displacement
1144 returns the right answer.
1145 ** (SIMPLE-STRING) is a valid type specifier for sequence
1147 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1149 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1150 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1152 ** The justification version of the FORMAT ~< directive treats
1153 non-zero minpad parameter correctly.
1155 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1156 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1157 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1158 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1159 the supported interface.
1160 * new feature: Single-stepping of code compiled with DEBUG 2 or
1161 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1162 * new feature: saving cores with foreign code loaded is now
1163 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1164 Timothy Moore's work for CMUCL)
1165 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1166 parameters to * instead of NIL if no initform is supplied.
1167 (reported by Johan Bockgaard)
1168 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1169 correctly when FUNCALL appears as the car of the form. Note:
1170 despite this FUNCALL forms are not currently subject to
1171 compiler-macro expansion. (port of Raymond Toy's fix for the
1172 same from CMUCL, reported by Johan Bockgaard)
1173 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1174 (thanks for Teemu Kalvas)
1175 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1176 case instead of terminating the iteration (thanks for Julian
1177 Squires, Sean Champ and Raymond Toy)
1178 * bug fix: incorrect expansion of defgeneric that caused a style
1179 warning. (thanks for Zach Beane)
1180 * bug fix: slot accessor effective method computation works properly
1181 for classes with multiple non-standard applicable methods on
1182 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1183 * on x86 compiler supports stack allocation of results of LIST and
1184 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1185 CMUCL implementation by Gerd Moellmann)
1186 * fixed some bugs revealed by Paul Dietz' test suite:
1187 ** FORMAT strings with both the ~<~:;~> form of the justification
1188 directive and pretty-printing directives cause an error.
1190 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1191 * incompatible change: the internal functions
1192 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1193 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1194 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1195 instead of the old functions.
1196 * new feature: on platforms where "dladdr" is available foreign
1197 function names now appear in backtraces. (based on Helmut Eller's
1199 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1200 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1202 * documentation: ASDF manual is now distributed with SBCL.
1203 * bug fix: SBCL can now load its contributed modules with REQUIRE
1204 even if the system-provided entries have been removed from
1205 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1207 * bug fix: backtraces involving undefined functions or assembly
1208 routines are more informative. (thanks to Brian Downing)
1209 * bug fix: mutually referent alien structures now work correctly.
1210 (reported by Rick Taube)
1211 * bug fix: structures defined by WITH-ALIEN can be referred to
1212 within other definitions in the same WITH-ALIEN.
1213 * bug fix: division operators (MOD, TRUNCATE and the like) with
1214 constant zero divisors and integer dividends no longer generate
1216 * bug fix: provide default methods for INPUT-STREAM-P and
1217 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1218 * bug fix: improve the detection and resolution of MOP metacycles
1219 (where effective method computation depends on the generic function
1220 having its effective method computed). (reported by Bruno Haible)
1221 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1222 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1223 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1224 * bug fix: pathnames with relative directory components can be
1225 represented relative to default pathnames.
1226 * optimization: in taking the GCD of bignums, reduce the two bignums
1227 to approximately the same size (using Euclid's algorithm) before
1228 applying the more sophisticated binary GCD. (thanks to Juho
1230 * optimization: COUNT on bitvectors now operates word-at-a-time.
1231 * optimization: ASH with a positive, but not necessarily constant,
1232 (leftwards) shift, when in a modular context, is compiled to a
1234 * fixed some bugs revealed by Paul Dietz' test suite:
1235 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1236 if the corresponding argument is NIL.
1237 ** FORMAT directives accepting a minpad parameter treat negative
1239 ** literal commas as character parameters to FORMAT directives are
1241 ** literal spaces directly after ~<Newline> directives within a
1242 format-logical-block (~:< ~@:>) do not induce :FILL-style
1243 conditional newlines.
1244 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1245 as specified: it no longer includes conditional newlines).
1246 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1248 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1249 :PER-LINE-PREFIX argument does not evaluate to a string.
1251 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1252 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1253 the manual for details; for now, package locks can be disabled by
1254 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1255 if no major problems are found then it is likely that they will be
1256 compiled in unconditionally.
1257 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1258 unsupported operators on all platforms. To load a shared library
1259 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1260 object file, link it into a shared library outside of SBCL and
1261 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1263 * bug workaround: ROOM T and the GC were not working together
1264 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1265 reporting facility aren't preserved. That reporting has been
1266 disabled, so now until and unless someone figures out how to make it
1267 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1268 * minor incompatible change: as threatened around sbcl-0.8.0, the
1269 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1270 The symbols are also exported from SB-PCL for backwards
1271 compatibility, but more so than before SB-PCL should be treated as
1272 an implementation-internal package.
1273 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1275 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1276 It is known as of this release not to work on the Alpha, however.
1277 * fixed bug #167: errors signalled due to illegal syntax in method
1278 bodies are now more legible.
1279 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1280 designators and can hence be used with TYPEP.
1281 * fixed bug #333: CHECK-TYPE now ensures that the type error
1282 signalled, if any, has the right object to be accessed by
1283 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1284 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1285 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1287 * fixed bug #334: programmatic addition of slots using specialized
1288 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1289 and :ALLOCATION :CLASS slots.
1290 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1291 float exponents. (rereported by Peter Seibel)
1292 * fixed a bug: #\Space (and other whitespace characters) are no
1293 longer considered to be macro characters in standard syntax by
1294 GET-MACRO-CHARACTER.
1295 * fixed bug: initialization of condition class metaobjects no longer
1296 causes an instance of the condition to be created. (reported by
1298 * fixed bug: it is now possible to have slots such that
1299 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1300 description is neither :INSTANCE nor :CLASS.
1301 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1302 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1303 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1304 non-standard SLOT-DEFINITION-ALLOCATION values.
1305 * fixed bugs: various race conditions handling exiting threads.
1306 CL-PPCRE's thread torture test now passes.
1307 * fixed arguably-a-bug: GC time proportional to number of threads in
1308 system even when most of them are idle
1309 * optimization: improved performance of BIT and SBIT on bit-vectors.
1310 * .fasl file incompatibility: The fasl file version number has
1311 been incremented because of changes associated with package locks.
1313 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1314 * minor incompatible change: the system no longer provides
1315 optimization hints (conditions which are TYPEP
1316 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1317 mode; these hints are still emitted when higher SPEED optimization
1319 * new contrib module: a sampling profiler (profiling by statistical
1320 sampling, rather than by instrumenting functions) is available as
1321 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1322 * the behaviour of the standard function ED is now customizeable by
1323 third parties through a hook variable: see ED's documentation
1324 string for information on the protocol.
1325 * the compiler no longer emits efficiency notes for (FUNCALL X)
1326 when the type of X is uncertain under default optimization
1328 * fixed bug 276: mutating a binding of a specialized parameter to a
1329 method to something that is not TYPEP the specializer is now
1331 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1332 exhibit the required behaviour on the x86 platform. (thanks to
1333 Peter van Eynde, Eric Marsden and Bruno Haible)
1334 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1335 even for difficult arguments. (reported by Peter Graves)
1336 * fixed bug 141a: the backquote printer now descends quoted
1338 * fixed another bug in backquote printing: no more destructive
1339 modification of the form's list structure. (reported by Brian
1341 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1342 move between its address being taken and the call to
1343 interrupt_thread, fixing a crashing race condition.
1344 * the SB-POSIX contrib implementation has been adjusted so that it
1345 no longer exhibits ridiculously poor performance when constructing
1346 instances corresponding to C structs.
1348 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1349 * minor incompatible change: the sb-grovel contrib now treats C
1350 structures as alien (in the sense of SB-ALIEN) objects rather than
1351 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1352 has implications for memory management of client code
1353 (sb-grovel-returned objects must now be manually managed) and for
1354 type safety (alien objects now have full types).
1355 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1356 used to control emission of compiler diagnostics, rather than the
1357 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1358 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1359 quality should be considered deprecated.
1360 * install.sh now installs the user manual as well
1361 * (not quite a new documentable feature, but worth considering in
1362 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1363 beginnings of a semantically meaningful condition hierarchy is
1364 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1366 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1367 designator as the defaults argument.
1368 * fixed bug: Displaced arrays whose displaced-to array has become
1369 too small now cause ARRAY-DIMENSION to signal an error, providing
1370 for safer bounds-checking. (reported by Bruno Haible)
1371 * fixed bug: DEFCLASS slot definitions with identical :READER and
1372 :WRITER names now signal a reasonable error. (reported by Thomas
1374 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1376 * fixed bug: Invalid slot specification errors now print correctly.
1377 (thanks to Zach Beane)
1378 * fixed bug 320: Shared to local slot value transfers in class
1379 redefinitions now happen corrently from superclasses as
1380 well. (reported by Bruno Haible)
1381 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1383 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1384 improper lists correctly. (reported by Bruno Haible)
1385 * fixed bug 313: source-transform for <fun-name> was erroneously
1386 applied to a call of a value of a variable with name <fun-name>.
1387 (reported by Antonio Menezes Leitao)
1388 * fixed bug 307: The obsolete instance protocol ensures that
1389 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1390 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1391 remove dead unknown-values globs from the middle of the stack.
1392 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1393 easier to resume long computations after using *BREAK-ON-SIGNALS*
1394 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1395 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1396 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1397 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1398 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1399 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1401 * fixed a (fairly theoretical) bug in string printing: if
1402 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1403 does not have array-element-type equal to the most general string
1405 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1406 function name. (thanks to Nikodemus Siivola)
1407 * fixed bug: compile-time format string checker failed on
1408 non-closed ~{. (reported by Thomas F Burdick)
1409 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1410 don't warn on legal loop code involving more than one aggregate
1411 boolean. (thanks to Nikodemus Siivola)
1412 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1413 in keyword position to MAKE-PACKAGE was not being reported as
1415 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1416 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1418 * fixed bugs 280 and 312: the checking for multiple definitions in a
1419 file is less likely to become confused by uses of inline
1421 * fixed bug: the #S reader macro performs the keyword coercion
1422 specified for slot names. (reported by Kalle Niemitalo)
1423 * fixed bug: lambda lists may contain symbols whose names start with
1424 & but are not lambda-list-keywords; their occurrence triggers a
1426 * fixed bug 321: define-method-combination argument lambda lists do
1427 not cause invalid code to be generated when &optional or &aux
1428 variables have default values. (reported by Bruno Haible)
1429 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1430 have CLOS classes; this appears also to have fixed reported
1431 instability in stack exhaustion detection.
1432 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1433 MUFFLE-WARNING when no associated restart is present is now
1435 * optimization: rearranged the expansion of various defining macros
1436 so that each expands into only one top-level form in a
1437 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1439 * optimization: used a previously little-used slot in symbols to
1440 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1442 * fixed some bugs revealed by Paul Dietz' test suite:
1443 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1445 ** Fixed an optimization bug related to inheritance of initforms
1446 from local to shared slots.
1447 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1448 ** CAST optimizer forgot to flush argument derived type.
1449 ** print/read consistency on floats is now orders of magnitude
1450 more likely. (thanks also to Bruno Haible for a similar report
1452 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1453 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1454 for objects of type REAL. Make it so.
1455 ** SXHASH is specified (infelicitously) to respect similarity,
1456 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1457 it so. (thanks to Markus Ziegler)
1458 ** on the Alpha, the compiler succeeds in compiling functions
1459 returning a known number of arguments greater than 63.
1460 ** fixed handling of invalid NIL arguments in keyword position
1462 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1464 ** provided a readably-printable representation for RANDOM-STATE
1466 ** ensured that pathnames, where they have a namestring, always
1467 print using #P"..." syntax.
1469 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1470 * Support for the forthcoming 2.0 version of the NetBSD kernel
1471 running on x86 hardware has been added. (thanks to Perry
1472 E. Metzger most immediately, and others for their past work)
1473 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1474 current release version; SBCL's OpenBSD support had been broken
1475 since about the time of OpenBSD's switch to ELF binary format.)
1476 * [placeholder for DX summary]
1477 ** user code with &REST lists declared dynamic-extent, under high
1478 speed or space and low safety and debug optimization policy.
1479 * The manual has been converted to Texinfo format and the debugger
1480 chapter from the cmucl manual has been added.
1481 * A facility has been added to extract documentation strings from
1482 sbcl and store them as Texinfo-formatted snippets for inclusion in
1483 the manual (via Texinfo's @include directive)
1484 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1485 the test case to Dave Roberts)
1486 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1487 pointers. (reported by Sean Ross)
1488 * bug fix: PROFILE output is printed nicely even for large numerical
1489 values. (thanks to Zach Beane)
1490 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1491 greater than 32 handle EOF correctly.
1492 * bug fix: on X86 an immediate argument of the IMUL instruction is
1493 correctly printed in disassembly. (thanks to Lutz Euler)
1494 * bug fix: class slots in redefined classes preserve their old
1495 values. (thanks to Bruno Haible and Nikodemus Siivola)
1496 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1497 succeeds. (reported by Marco Baringer)
1498 * fixed some bugs revealed by Paul Dietz' test suite:
1499 ** READ-SEQUENCE now works on ECHO-STREAMs.
1500 ** RATIONALIZE works more according to its specification. (thanks
1503 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1504 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1505 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1506 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1507 should matter to you only if you rebind the printer control
1508 variables and then find you want different bindings in the
1509 debugger than in the ordinary execution of your program.)
1510 * The runtime build system has been tweaked to support building
1511 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1512 assembler and linker. (thanks to Nikodemus Siivola)
1513 * Unbound, undefined, undeclared variables now trigger full
1514 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1515 more often programmer error than deliberate exploitation of undefined
1517 * optimization: the hash algorithm for strings has changed to one
1518 that is less vulnerable to spurious collisions. (thanks to Juho
1520 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1521 needless bounds checking. (thanks to Juho Snellman)
1522 * optimization: implemented multiplication as a modular
1523 (UNSIGNED-BYTE 32) operation on the PPC backend.
1524 * fixed some bugs revealed by Paul Dietz' test suite:
1525 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1527 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1528 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1529 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1531 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1533 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1535 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1536 their output stream on EOF from read.
1537 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1538 have been read to end-of-file.
1539 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1541 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1542 description of determination of which consecutive characters
1544 ** Printing the "Space" character with escaping on now yields "#\\ ",
1545 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1546 ** Reading floating-point numbers with *READ-BASE* set to a number
1547 less than 10 works correctly.
1548 ** Reading floating-point numbers with *READ-BASE* set to a number
1549 more than 10 works correctly.
1550 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1551 the readtable currently in effect.
1553 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1554 * minor incompatible change: parsing of namestrings on a physical
1555 (Unix) host has changed; numbers after the final #\. in a
1556 namestring are no longer interpreted as a version field. This is
1557 intented to be largely invisible to the user, except that the
1558 meaning of the namestring "*.*.*" has changed: it now refers to a
1559 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1560 should usually be replaced by
1561 (make-pathname :name :wild :type :wild :version :wild)
1562 with the added benefit that this is more likely to be portable.
1563 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1564 option to OPEN now signals an error if the file being opened
1565 exists; this may have an impact on existing code.
1566 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1567 signals received, on the PowerPC platforms (both Linux and
1568 Darwin). (thanks to Pierre Mai for pointing out the location of
1570 * several fixes on OS X: The system now builds and runs cleanly on
1571 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1572 (thanks to Brian Mastenbrook)
1573 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1574 second-resolution: integer multiples of 1/3600 between -24 and 24.
1575 (thanks to Vincent Arkesteijn)
1576 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1577 type when called with 1 argument; PEEK-CHAR checked type of
1578 PEEK-TYPE only after having read first character from a
1579 stream. (reported by Peter Graves)
1580 * bug fix: the garbage collector now has much better locality
1581 behaviour, and in particular no longer treats all memory as being
1582 exhausted when many small objects point to each other in a deeply
1584 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1585 recognized as being TYPEP their class.
1586 * bug fix: the PUSHNEW documentation string has been corrected.
1587 (thanks to Vincent Arkesteijn)
1588 * bug fix: defaulting of the value for the last of an atypically
1589 large number of multiple values being bound was not being
1590 performed correctly on the Alpha or PPC platforms
1591 * optimization: implemented multiplication as a modular
1592 (UNSIGNED-BYTE 32) operation on the x86 backend.
1593 * optimization: SEARCH on simple-base-strings can now be open-coded.
1594 (see also contrib/compiler-extras.lisp for inspiration for
1595 teaching the compiler about the Boyer-Moore algorithm).
1596 * value, returned by MAX (and MIN) called with several EQUALP, but
1597 not EQL, arguments now does not depend on compiler settings.
1598 * fixed some bugs revealed by Paul Dietz' test suite:
1599 ** in stack analysis liveness information is propagated from
1600 non-local entry points.
1601 ** pathwise CAST removing failed when the CAST node did not start
1603 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1604 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1606 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1607 host is already defined.
1608 ** RENAME-FILE works on streams instead of signalling an internal
1610 ** PEEK-CHAR uses the current readtable when determining whether
1611 or not a character is whitespace.
1612 ** MERGE-PATHNAMES handles the case when the pathname does not
1613 specify a name while the default-pathname specifies a version.
1614 ** Pathnames now stand a better chance of respecting print/read
1616 ** Attempting to use standardized file system operators with a
1617 pathname with invalid :DIRECTORY components signals a
1619 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1621 ** DIRECTORY on logical pathnames is more correct.
1622 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1623 signal a TYPE-ERROR if their argument is not a stream.
1624 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1625 designator argument does not designate a stream.
1626 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1627 examining the synonym.
1628 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1630 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1631 element-type larger than ([UN]SIGNED-BYTE 32).
1633 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1634 * When built with the :SB-FUTEX feature, threaded builds now take
1635 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1636 for faster/more reliable mutex and condition variable support.
1637 * Incompatible change (but one you probably shouldn't have been using
1638 anyway): the interface and code for arbitrating between multiple
1639 threads in the same user session has been redesigned.
1640 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1641 error when called without an explicit environment argument.
1642 (thanks to Nikodemus Siivola)
1643 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1644 confused about their position. (thanks to Adam Warner and Gerd
1646 * bug fix: Pretty printing backquoted forms with unquotations in the
1647 argument list position of various code constructs such as LAMBDA
1648 now works correctly. (reported by Paul Dietz)
1649 * bug fix: Pretty printing unquotations no longer loses all
1650 stream position information.
1651 * optimization: performance of string output streams is now less
1652 poor for multiple small sequence writes.
1653 * optimization: performance of CSUBTYPEP in the presence of complex
1654 expressions involving CONS and NOT many times has been improved.
1655 (reported by Paul Dietz)
1656 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1658 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1659 streams for the REPL, for the debugger, and so on. (thanks to
1661 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1662 * fixed some bugs revealed by Paul Dietz' test suite:
1663 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1664 is ignored if it is too small, rather than propagating through
1665 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1666 ** extremely complex negations of CONS types were not being
1667 sufficiently canonicalized, leading to inconsistencies in
1669 ** VALUES tranformer lost derived type.
1671 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1672 * fixed a bootstrapping bug: the build process no longer assumes
1673 that the various BOOLE-related constants have the same value in
1674 host and target lisps. (noted by Paul Dietz' test suite on an
1675 SBCL binary built from CLISP)
1676 * The system can now be dynamically linked on the MIPS platform,
1677 which enables dynamic loading of foreign code from Lisp. (thanks
1678 to Ralf Baechle for discussions on the MIPS ABI)
1679 * The system now records debugging information for its own source
1680 files in a filesystem-position-independent manner, relative to
1681 the "SYS" logical host.
1682 * fixed a compiler bug: MV-LET convertion did not check references
1683 to the "max args" entry point. (reported by Brian Downing)
1684 * tweaked disassembly notes to be less confident about proclaiming
1685 some instruction as an LRA. (thanks to Brian Downing)
1686 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1687 now each have their own history, command character, and other
1688 characteristics. (thanks to David Lichteblau)
1689 * fixed some bugs revealed by Paul Dietz' test suite:
1690 ** compiler failure in compiling LOGAND expressions including a
1692 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1693 shift greater than 32.
1694 ** FLUSH-DEST did not mark blocks for type check regeneration.
1695 ** HANDLER-CASE failed to accept declarations in handler clauses
1696 in some circumstances.
1698 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1699 * New code in contrib/sb-introspect (still probably not entirely
1700 stable yet) provides some support for smart Lisp development
1701 environments like SLIME.
1702 * The conditions signalled for errors occurring when loading .fasl
1703 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1704 in a way which should help ASDF recover gracefully.
1705 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1706 stuff has been cleaned up. If you code contrib/ stuff, this might
1707 affect you, and you can look at contrib/README, contrib/STANDARDS,
1708 and/or the 0.8.4.27 diff to check.
1709 * In full calls the compiler now does not generate checks for declared
1710 argument types for all arguments.
1711 * various threading fixes
1712 ** and some experimental patches which didn't make it into
1713 the main tree for this release, but which are shipped in
1714 contrib/experimental-thread.patch as a possible fix for some
1715 failures (deadlock, spinning...) in GC-intensive multithreaded
1717 * fixed PPC build problem (source code incompatibility of different
1718 library versions): added offsetof() hackery which attempts to divine
1719 where glibc maintainers put uc_mcontext today
1720 * fixed bug 282: compiler does not trust type assertions while passing
1721 arguments to a full call.
1722 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1723 &OPTIONAL VALUES type parameter.
1724 * fix bug 214: algorithm for noting rejected templates is now more
1725 similar to that of template seletion. (also reported by rydis on
1727 * fixed bug 141b: printing backquoted information readably and prettily
1728 inserts a space where necessary.
1729 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1730 (CHARACTER 10) are now reported as errors, rather than propagated
1731 as unknown types. (reported by piso on #lisp)
1732 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1733 with values NIL and :ERROR. (thanks to Milan Zamazal)
1734 * fixed bug 191c: CLOS now does proper keyword argument checking as
1735 described in CLHS 7.6.5 and 7.6.5.1.
1736 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1737 longer raise an error; further, using a list as a for-as-arithmetic
1738 counter now raises a meaningful error.
1739 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1740 now understood by sequence creation functions such as MAKE-SEQUENCE
1742 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1743 a STRING-INPUT-STREAM.
1744 * compiler enhancement: SIGNUM is now better able to derive the type
1746 * type declarations inside WITH-SLOTS are checked. (reported by
1748 * fixed some bugs revealed by Paul Dietz' test suite:
1749 ** incorrect optimization of TRUNCATE for a positive first
1750 argument and negative second.
1751 ** compiler failure in let-convertion during flushing dead code.
1752 ** compiler failure while deriving type of TRUNCATE on an
1753 interval, containing 0.
1754 ** ASH of a negative bignum by a negative bignum count now returns
1756 ** intersection of CONS types now canonicalizes properly, fixing
1757 inconsistencies in SUBTYPEP.
1759 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1760 * incompatible change: The --disable-debugger command line
1761 option now clobbers the debugger at a more fundamental
1762 level, by redefining #'INVOKE-DEBUGGER instead of by
1763 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1764 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1765 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1766 enter the debugger REPL and then suffer recursive errors
1767 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1768 while under the new system, BREAK in --disable-debugger mode
1769 terminates the system just as an unhandled error would.
1770 * fixed compiler performance when processing loops with a step >1;
1771 * bug fix: DOCUMENTATION now retrieves generic function
1772 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1773 support has been systematized, and now supports the methods
1774 specified by ANSI, along with a default method and a method for
1775 slot documentation. (reported by Nathan Froyd)
1776 * bug fix: effective methods associated with a generic function are
1777 no longer cached over a change of that generic function's method
1778 combination. (reported by Andreas Fuchs)
1779 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1780 names a non-existent directory. (thanks to Andreas Fuchs)
1781 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1782 the PPC platform, lead to stack corruption; this has been fixed.
1783 (reported by Rainer Joswig)
1784 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1785 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1786 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1787 arithmetic in general, is now much more reliable on the PPC
1789 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1790 platform now returns the right answer.
1791 * optimization: restored some effective method precomputation in
1792 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1793 precomputation is now tunable.
1794 * optimization: compiler-internal data structure use has been
1795 reviewed, and changes have been made that should improve the
1796 performance of the compiler by about 20%.
1797 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1798 simple-base-strings and simple-bit-vectors is improved.
1799 * optimization: the optimization of 32-bit logical and arithmetic
1800 functions introduced in version 0.8.3 on the x86 has been
1801 implemented on the mips, ppc and sparc platforms; an
1802 implementation of the same facility, but for 64-bit arithmetic,
1803 has been added for the alpha.
1804 * microoptimization: the compiler is better able to make use of the
1805 x86 LEA instruction for multiplication by constants.
1806 * bug fix: in some situations compiler did not report usage of
1807 generic arithmetic in (SPEED 3) policy.
1808 * bug 145b fix: compiler used wrong type specifier while converting
1809 MEMBER-types to numeric.
1810 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1812 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1813 index argument now works properly on the Alpha platform.
1814 * bug fix: floating point exception treatment on the Alpha platform
1816 * bug fix: FILE-POSITION works much better on string input and
1817 output streams. (thanks to Nikodemus Siivola)
1818 * bug fix: many threading/garbage collection symptoms sorted.
1819 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1820 might be pseudo-atomic.
1821 * internal change: Stopping for GC is now done with signals not
1822 ptrace. GC is now done in whichever thread wanted it, instead of
1824 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1826 * bug fix: result form in DO is not contained in the implicit
1828 * incompatible change: ICR structure is changed; the value part of
1829 CONTINUATION is now called LVAR; corresponding functions are
1830 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1831 * added type deriver for ISQRT (thanks to Robert E. Brown).
1832 * bug fix: better support for loading from the command line when an
1833 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1835 * fixed some bugs revealed by Paul Dietz' test suite:
1836 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1837 ** ROUND and FROUND now give the right answer when given very
1838 small float arguments.
1839 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1841 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1842 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1843 ** LCM should return a non-negative integer.
1844 ** PARSE-INTEGER returned the index of a terminator instead of the
1845 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1846 ** PARSE-INTEGER returned an incorrect index being applied to a
1848 ** LCM with two arguments of 0 returns 0 rather than signalling
1850 ** unsigned addition of a 32-bit constant with the high bit set no
1851 longer causes an internal compiler error on the x86.
1852 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1853 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1854 with negative last argument.
1855 ** byte specifiers with zero size and position no longer cause
1856 an error during type derivation.
1857 ** bignum multiplication on the Alpha platform now returns the
1859 * porting: The system now builds on SuSE AMD64, although it still
1860 generates a 32-bit binary.
1861 * .fasl file incompatibility: The fasl file version number has
1862 been incremented (because of the changes to internal compiler
1863 data structures referred to above).
1865 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1866 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1867 more accurately, on the Darwin kernel running on PowerPC hardware.
1868 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1869 * Compiler code deletion notes now signal a condition of type
1870 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1871 an associated MUFFLE-WARNING restart.
1872 * The compiler now performs limited argument count validation of
1873 constant format strings in FORMAT, and where appropriate in ERROR,
1874 CERROR and WARN. (thanks to Gerd Moellmann)
1875 * New ASDF-INSTALL contrib can be used for automatic download and
1876 installation of third-party Lisp code from CCLAN or other sites
1878 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1879 which forces another thread to execute a function supplied by the
1881 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1882 now accept and act upon their :ELEMENT-TYPE keyword argument.
1883 (reported by Martin Atzmueller, Edi Weitz)
1884 * bug fix: FILE-POSITION now accepts position designators up to
1885 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1886 is the greater. (thanks to Patrik Nordebo)
1887 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1888 Kalle Olavi Niemitalo)
1889 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1890 printable. (reported by Eric Marsden)
1891 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1892 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1893 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1894 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1895 (thanks to Stig Sandoe)
1896 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1897 UNREAD-CHAR now correctly includes the unread character in the
1898 target sequence. (thanks to Gerd Moellmann)
1899 * bug fix in threaded builds: the system can now be suspended and
1900 resumed by shell job control with minimal disruption.
1901 * bug fixes in times and timezones >2038AD
1902 * better handling of "where is GNU make?" problem in build scripts
1903 (thanks to Nikodemus Siivola)
1904 * new optimization: inside a named function any reference to a
1905 function with the same name is considered to be a self-reference;
1906 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1907 optimization quality.
1908 * new optimization on x86: logical functions and + now have
1909 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1910 used when the result is truncated to 32 bits.
1911 * VALUES declaration is partially enabled.
1912 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1913 * fixed some bugs revealed by Paul Dietz' test suite:
1914 ** The system now obeys the constraint imposed by
1915 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1916 types form a lattice under type intersection.
1917 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1918 ** ASSOC now ignores NIL elements in an alist.
1919 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1920 and (1+ MOST-POSITIVE-FIXNUM) answers.
1921 ** The addition of a method with invalid qualifiers to a generic
1922 function does not cause an error to be signalled immediately;
1923 a warning is signalled, and the error is generated only on
1924 calling the generic function.
1925 * changed .fasl file version number, in part to add type codes for
1926 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1927 obscure ANSI requirements
1929 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1930 * fixed bug 148: failure to inline-expand a local function left
1931 garbage, confusing the compiler.
1932 * fixed bugs 3cd: structure slot readers perform type check if the
1933 slot can have an invalid value (i.e. it is either not initialized
1934 or can be written with a less specific slot writer).
1935 * bug fix: the compiler now traps array references to elements off
1936 the end of an array; previously, the bounds checking in some
1937 circumstances could go off-by-one.
1938 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1940 * type declarations for array element types now obey the description
1941 on the CLHS page "Declaration TYPE", as per discussions on
1942 sbcl-help around 2003-05-08. This means that a declaration
1943 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1944 declaration, all references to BAR will be asserted or assumed
1945 (with THE, so dependent on compiler policy) to involve objects of
1946 type FOO. Note that no such declaration is implied in
1947 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1948 * declared types of functions from the "Conditions"
1949 chapter. (reported by Paul Dietz)
1950 * bug fix: CERROR accepts a function as its first argument.
1951 * bug fix: NTH an NTHCDR accept a bignum as index
1952 arguments. (reported by Adam Warner)
1953 * optimization: character compare routines now optimize comparing
1954 against a constant character. (reported by Gilbert Baumann)
1955 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1956 argument now works properly on the MIPS platform.
1957 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1958 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1959 declared to have a functional type, does not cause an error
1961 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1962 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1963 * fixed bug: if last continuation of a deleted block has a
1964 destination, this destination should be deleted too. (reported by
1966 * fixed a bug in the bootstrap process: the host compiler's values
1967 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1968 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1969 test case from Patrik Nordebo)
1970 * improved the ability of the disassembler on the PPC platform to
1971 provide helpful disassembly notes.
1972 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1973 the class in more cases than previously.
1974 * bug fix: FILE-POSITION now understands :START and :END for
1975 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1976 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1977 8) data. (thanks to David Lichteblau)
1978 * bug fix: it is possible to add a method to a generic function
1979 without lambda list.
1980 * bug fix: reader failed to signal END-OF-FILE inside an
1981 object representation. (reported by Nikodemus Siivola)
1982 * fixed some bugs revealed by Paul Dietz' test suite:
1983 ** LAST and [N]BUTLAST should accept a bignum.
1984 ** condition slot accessors are methods.
1985 ** (VECTOR NIL) is a subtype of STRING.
1987 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1988 * minor incompatible change: some nonsensical specialized lambda
1989 lists (used in DEFMETHOD) which were previously ignored now signal
1991 * minor incompatible change: the system is now aware of the types of
1992 variables in the COMMON-LISP package, and will signal errors for
1993 most violations of these type constraints (where previously they
1994 were silently accepted).
1995 * minor incompatible change: COMPILE-FILE now uses the freedom
1996 afforded (ANSI 3.2.2.3) to use derived function types for
1997 functions defined in the same file. This also permits the system
1998 to warn on static type mismatches and function
1999 redefinition. (Currently it does not work with high DEBUG level.)
2000 * minor incompatible change: VALUES declaration is disabled.
2001 * When issuing notes, the compiler now signals a condition of type
2002 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2003 restart for use in user handlers. It is expected that the
2004 COMPILER-NOTE condition will eventually become a condition
2005 supertype to a hierarchy of note types, which will then be
2006 handleable in a similar fashion. However, at the moment, no such
2007 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2008 but it's an implementation detail, not a classification for the
2010 * Changes in type checking closed the following bugs:
2011 ** type checking of unused values (192b, 194d, 203);
2012 ** template selection based on unsafe type assertions (192c, 236);
2013 ** type checking in branches (194bc).
2014 * A short form of VALUES type specifier has ANSI meaning (it has
2015 increased the number of situations when SBCL cannot perform type
2017 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2018 keywords or constants is permissible.
2019 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2020 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2021 classes. (thanks to Antonio Martinez)
2022 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2023 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2024 argument to a pretty-print stream. Instead, it leaves any such
2025 operations to DESCRIBE-OBJECT methods.
2026 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2028 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2029 lambda lists. (thanks to David Lichteblau)
2030 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2031 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2032 (thanks to Gerd Moellmann)
2033 * fixed bug 246: increased compilation speed of long
2034 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2036 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2038 * DEFCONSTANT now throws a condition of type
2039 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2040 constant to a non-EQL value; CONTINUE and ABORT restarts
2041 respectively change and preserve the value.
2042 * fixed bug 63: The code walker, part of the implementation of CLOS,
2043 is now better at handling symbol macros.
2044 * bug fix: There is no longer an internal implementation type named
2045 CL:LENGTH. (reported by Raymond Toy)
2046 * bug fix: In macro-like defining macros/special operators the
2047 implicit block does not enclose the lambda list.
2048 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2049 enclosed in parentheses) are not suitable as type specifiers, and
2050 their use properly signals an error now.
2051 * bug fix: An argument count mismatch for a type specifier in code
2052 being compiled no longer causes an unhandled error at compile
2053 time, but signals a compile-time warning.
2054 * fixed simple vector readable printing
2055 * bug fix: DESCRIBE takes more care over whether the class
2056 precedence list slot of a class is bound before accessing it.
2057 (reported by Markus Krummenacker)
2058 * bug fix: FORMATTER can successfully compile pretty-printer format
2059 strings which use variants of the ~* directive inside.
2060 * bug fix: SEARCH now applies its TEST predicate to the elements of
2061 the arguments in the correct order. (thanks to Wolfhard Buss)
2062 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2063 in type inference. (thanks to Robert E. Brown)
2064 * bug fix: Reading in symbols with an explicit package name of ""
2065 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2066 * fixed some bugs revealed by Paul Dietz' test suite:
2067 ** NIL is now allowed as a structure slot name.
2068 ** Arbitrary numbers, not just REALs, are allowed in certain
2069 circumstances in LOOP for-as-arithmetic clauses.
2070 ** Multiple class redefinitions before slot access no longer
2071 causes a type error.
2072 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2073 association between the name and a class.
2074 ** Generic functions with non-standard method-combination and over
2075 five methods all of which return constants no longer return NIL
2076 after the first few invocations. (thanks to Gerd Moellmann)
2077 ** CALL-NEXT-METHOD with no arguments now passes the original
2078 values of the arguments, even in the presence of assignment.
2079 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2081 ** DISASSEMBLE works with closures and funcallable instances.
2082 ** ADD-METHOD now returns the generic function, not the new method.
2083 ** FIND-METHOD signals an error if the lengths of the specializers
2084 is incompatible with the generic function, even if the ERRORP
2086 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2087 which its argument is a member.
2088 ** DEFCLASS only redefines the class named by its class-name
2089 argument if that name is the proper name of the class;
2090 otherwise, it creates a new class.
2091 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2092 of the UNBOUND-SLOT condition to the name of the slot.
2093 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2094 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2095 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2096 SLOT-MAKUNBOUND in the specified fashion.
2098 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2099 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2100 cross-compilation host. As a consequence, we can now bootstrap our
2101 way up to SBCL starting with a bare gcc toolchain and human-readable
2102 source code (first the source to CLISP, then the source to SBCL).
2103 * A contributed module containing a partial implementation of the
2104 simple-streams interface has been included. (thanks to Rudi
2106 * A contributed module implementing the RFC1321 Message Digest
2107 Algorithm, known as MD5, has been included.
2108 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2109 no longer has any effect, as the code controlled by this feature
2110 has been deleted. (As far as we know, no-one has ever built using
2111 this feature, and its semantics were confused in any case).
2112 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2113 work on conditions (as required by the ANSI specification),
2114 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2115 expected behaviour on conditions. Users should note, however,
2116 that such behaviour is not required by the ANSI specification,
2117 and so use of this behaviour may render their code unportable.
2118 * fixed some bugs revealed by Paul Dietz' test suite:
2119 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2121 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2122 ** SXHASH on condition objects no longer returns NIL.
2123 ** :ALLOCATION :CLASS slots are better treated; their values are
2124 updated on class redefinition, and initforms inherited from
2125 superclasses are applied.
2126 ** REMOVE-METHOD returns its generic function argument even when
2127 no method was removed.
2128 ** SHARED-INITIALIZE now initializes the values of the requested
2129 slots, including those with :ALLOCATION :CLASS.
2130 ** ALLOCATE-INSTANCE now works on structure classes defined via
2131 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2133 ** SLOT-EXISTS-P now works on conditions, as well as structures
2135 ** MAKE-LOAD-FORM now has the required methods on
2136 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2137 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2138 keyword, and now implements the SLOT-NAMES argument.
2139 ** methods with &OPTIONAL arguments no longer allow too many
2140 arguments to be passed in the call without error.
2141 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2142 option is consistent with the required arguments of the generic
2143 function lambda list.
2144 * bug fix: REQUIRE accepts a string designator. (Thanks to
2146 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2147 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2148 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2149 * bug fix: The compiler now checks for duplicated variables in macro
2151 * bug fix: SETQ on globals returns the correct value.
2152 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2153 not a COMPILER-ERROR (followed by some other strange error on
2154 choosing the CONTINUE restart).
2155 * bug fix: make.sh and friends are now more consistent in the way that
2156 they look for GNU "make".
2158 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2159 * experimental native threads support (on x86 Linux >=2.4 only).
2160 This is not compiled in by default: you need to add :SB-THREAD to
2161 the target features. See the "Beyond ANSI" chapter of the manual
2163 * fix for longstanding nonANSIism: The old distinction between
2164 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2165 The return value from CL:FIND-CLASS is now a CLOS class, and
2166 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2167 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2168 * An interface to the MetaObject Protocol, as described in Kiczales,
2169 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2170 MIT Press, 1991, is available from the SB-MOP package.
2171 * incompatible change: the SB-PCL package should now be considered
2172 a private implementation detail, and no longer a semi-private MOP
2174 * minor incompatible change: due to rearrangement for threads, the
2175 control stack and binding stack are now allocated at arbitrary
2176 addresses instead of being hardcoded per-port. Users affected by
2177 this probably have to be doing advanced things with shared
2178 libraries, and will know who they are.
2179 * minor incompatible change: Previously, all --eval forms used were
2180 processed with READ before any of them were processed with EVAL.
2181 Now each --eval form is processed with both READ and EVAL before
2182 the next --eval form is processed. (Thus package operations like
2183 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2184 work as the user might reasonably expect.)
2185 * minor incompatible change: *STANDARD-INPUT* is now only an
2186 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2188 * minor incompatible change: Y-OR-N-P is now character-oriented,
2189 not line oriented. Also, YES-OR-NO-P now works without errors.
2190 (thanks to Antonio Martinez)
2191 * sb-aclrepl module improvements: an integrated inspector, added
2192 repl features, and a bug fix to :trace command.
2193 * Known functions, which cannot be open coded by the backend, are
2194 considered to be able to check types of their arguments. (fixing
2195 a bug report by Nathan J. Froyd)
2196 * fixed a bug in computing method discriminating functions: It is
2197 now possible to define methods specialized on classes which have
2198 forward-referenced superclasses. (thanks to Gerd Moellmann)
2199 * fixed evaluation order in optional entries (reported by Gilbert
2201 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2202 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2203 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2204 required-by-AMOP NAME argument, as well as CLASS and
2205 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2206 * fixed bug 20: DEFMETHOD can define methods using names that are
2207 not the proper names of classes to designate class specializers.
2208 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2209 Unix file descriptors, instead of blowing up. (thanks to Antonio
2211 * Garbage collection refactoring: user-visible change is that a
2212 call to the GC function during WITHOUT-GCING will not do garbage
2213 collection until the end of the WITHOUT-GCING. If you were doing
2214 this you were probably losing anyway.
2215 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2216 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2217 TYPEP the latter but not the former.
2218 * The compiler issues a full WARNING for calls to undefined functions
2219 with names from the CL package.
2220 * MAP-INTO for a vector destination is open coded. (reported by
2221 Brian Downing on c.l.l)
2222 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2223 documentation string.
2224 * fixed some bugs revealed by Paul Dietz' test suite:
2225 ** COPY-ALIST now signals an error if its argument is a dotted
2227 ** Condition slots are now accessed more correctly in the presence
2228 of multiple initargs for a given slot.
2229 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2230 exclude restarts of the same name associated with a different
2232 ** DEFCLASS of forward-referenced classes with another
2233 forward-referenced class in the superclasses list no longer
2235 ** Condition slots are now initialized once each, not multiple
2236 times. (thanks to Gerd Moellmann)
2237 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2239 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2240 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2241 arguments contain duplicated elements.
2242 ** RESTART-CASE understands local macros.
2243 ** RESTART-CASE associates exactly its own restarts with a condition.
2244 ** ENDP in safe mode checks its argument to be of type LIST.
2245 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2246 in question is unbound.
2247 ** Optimized MAKE-INSTANCE functions no longer cause internal
2248 assertion failures in the presence of duplicate initargs.
2249 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2250 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2251 propagated even in the ctor optimized implementation of
2253 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2255 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2256 * a better implementation of SXHASH on (simple) bit vectors,
2257 measured both in execution speed and in distribution of results
2258 over the positive fixnums, has been installed. Likewise, a better
2259 implementation of EQUAL for simple bit vectors is now available.
2260 * fixed CEILING optimization for a divisor of form 2^k.
2261 * fixed bug 240 (emitting extra style warnings "using the lexical
2262 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2263 by Antonio Martinez)
2264 * fixed SXHASH, giving different results for NIL depending on type
2265 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2266 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2267 variable. (found by Rolf Wester)
2268 * SBCL does not ignore type declarations for special
2269 variables. (reported by rif on c.l.l 2003-03-05)
2270 * some bug fixes in contrib/sb-aclrepl/
2271 * fixed some bugs revealed by Paul Dietz' test suite:
2272 ** a bug in the CONS type specifier, whereby the CAR and CDR
2273 types got intertwined, has been fixed;
2274 ** the type system is now able to reason about the interaction
2275 between INTEGER and RATIO types more completely;
2276 ** APPEND, [N]REVERSE and NRECONC check that those their
2277 arguments, which must be proper lists, are really so;
2278 ** An array specialized to be unable to hold elements has been
2279 implemented, as required -- yes, really -- by ANSI;
2280 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2281 on malformed property lists;
2283 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2284 * incompatible packaging change: in line with Unix convention,
2285 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2286 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2287 * REQUIRE and PROVIDE are now optionally capable of doing something
2288 useful. See the documentation string for REQUIRE.
2289 * infrastructure for a managed SBCL contrib system: contributed
2290 modules in this release include:
2291 ** the ASDF system definition facility;
2292 ** an interface to the BSD Sockets API;
2293 ** an ACL-like convenience interface to the repl;
2294 (thanks to Kevin Rosenberg)
2295 ** an implementation of ROTATE-BYTE, with efficient implementation
2297 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2298 gives a closer approximation to the right answer than previously.
2299 (thanks to Raymond Toy)
2300 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2301 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2302 optional environment arguments, as required by ANSI.
2303 * fixed bugs in other functions taking environment objects, allowing
2304 calls with an explicit NIL environment argument to be compiled
2306 * fixed bug 228: primary return values from
2307 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2308 COMPILE or FUNCTION.
2309 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2310 :TYPE will no longer signal errors on innocuous objects.
2311 * fixed bug 231b: SETQ is better at respecting type declarations in
2312 the lexical environment.
2313 * fixed a bug in DEFCLASS: classes named by symbols with no or
2314 unprintable packages can now be defined.
2315 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2316 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2317 * fixed compiler failure related to checking types of functions.
2318 (reported by Robert E. Brown)
2319 * the compiler is now much more consistent in its error-checking
2320 treatment of bounding index arguments to sequence functions: in
2321 (SAFETY 3) code, errors will be signalled in almost all cases if
2322 invalid sequence bounding indices are passed to functions defined
2323 by ANSI to operate on sequences.
2324 * fixed a bug in the build procedure: documentation of SBCL-specific
2325 packages is now preserved and available in the final Lisp image.
2326 * lifted FDEFINITION lookup out of loops in the implementation of
2327 many list operations. (thanks to Robert E. Brown)
2328 * fixed a bug in the reader: the #n# reader macro now works for
2329 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2330 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2331 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2332 E. Brown and Tony Martinez respectively)
2333 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2334 SLOT-BOUNDP: in particular, it is now able to optimize them much
2335 better, and is now not vulnerable to having packages renamed.
2336 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2337 always called when a slot is not present in an instance. (thanks
2339 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2340 longer signal an error on unreading a character following EOF on
2341 the previous constituent stream. (thanks to Tony Martinez)
2342 * fixed some bugs revealed by Paul Dietz' test suite:
2343 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2344 not just nonnegative fixnums;
2345 ** the logical bit-array operators such as BIT-AND now accept an
2346 explicit NIL for their "opt-arg" argument (to indicate a
2347 freshly-consed result bit-array);
2348 ** ELT now signals an error on an invalid sequence index in safe
2350 ** the type system is now cleverer about negations of numeric
2351 types, and consequently understands the BIGNUM and RATIO types
2353 ** the type system is now cleverer about the interaction between
2354 INTEGER and RATIO types: while bugs still remain, many more
2355 cases are accurately computed;
2356 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2357 if it is in the last clause;
2358 ** CONSTANTLY now correctly returns a side-effect-free function in
2360 ** DECLARE is no longer treated as a special-operator; in
2361 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2362 * incremented fasl file version number due to the change in the
2363 DEFSTRUCT-SLOT-DESCRIPTION structure.
2365 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2366 * minor incompatible change: code processed by the "interpreter" or
2367 EVAL now has a compilation optimization policy of (DEBUG 2)
2368 (changed from (DEBUG 1)) to improve debuggability of interactive
2369 development, and to allow the use of the debug RETURN command in
2371 * an experimental implementation of the RETURN command for the
2372 debugger has been included. (thanks to Frederik Kuivinen)
2373 * fixed bug 62: constraints were not propagated into a loop.
2374 * fixed bug in embedded calls of SORT (reported and investigated by
2376 * fixed some bugs revealed by Paul Dietz' test suite:
2377 ** printing and reading of arrays with some dimensions having
2378 length 0 (thanks to Gerd Moellmann);
2379 ** BOA constructor with &AUX argument without a default value does
2380 not cause a type error;
2381 ** CONSTANTP now returns true for all self-evaluating objects.
2383 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2384 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2385 accessors that are related by inheritance, as specified in the
2386 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2387 Valtteri Vuorikoski)
2388 * The compiler is now able to inline functions that were defined in
2389 a complex lexical environment (e.g. inside a MACROLET).
2390 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2392 * Support for the upcoming FreeBSD-5.0 release has been included.
2393 (thanks to Dag-Erling Smorgrav)
2394 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2395 effect when it is not in a toplevel context.
2396 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2397 stand a better chance of being correct. (thanks to Gerd
2399 * fixed bug in COERCE, which now signals an error on coercing a
2400 rational to a bounded real type which excludes the expected
2402 * The compiler is now able to derive types more accurately from the
2403 COERCE and COMPILE functions.
2404 * fixed bug 223: functional binding is considered to be constant
2405 only for symbols in the CL package.
2406 * fixed bug 231: SETQ did not check the type of a variable being set
2407 (reported by Robert E. Brown)
2408 * A new optimization for MAKE-INSTANCE has been included, fixing
2409 various bugs (including relating to :ALLOCATION :CLASS slots and
2410 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2412 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2413 ** As required by ANSI, LOOP now disallows anonymous collection
2414 clauses such as COLLECT I in conjunction with aggregate boolean
2415 clauses such as THEREIS (= I 1);
2416 ** LOOP now signals an error when any variable is reused in the
2417 same loop (including the potentially useful construct analogous
2418 to WITH A = 1 WITH A = (1+ A);
2419 ** IT is only a special loop symbol within the first clause of a
2420 conditional loop clause;
2421 ** LOOP with a typed iteration variable over a hashtable now
2422 signals a type error iff it should.
2423 * fixed some other bugs revealed by Paul Dietz' test suite:
2424 ** FILE-STREAM now names the class previously known as FD-STREAM;
2425 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2426 argument) no longer signals an error;
2427 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2428 of the slot symbol, rather than using the current package
2429 ((:CONC-NAME "") continues to intern the slot's name in the
2431 * incremented fasl file version number, because of the incompatible
2432 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2433 of the new implementation of DEFINE-COMPILER-MACRO.
2435 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2436 * Support for building SBCL for MIPS platforms running in
2437 little-endian mode has now been checked in, and basic
2438 functionality on said platforms verified.
2439 * minor incompatible change: PCL now records the pathname of a file
2440 in which methods and the like are defined, rather than its
2442 * minor incompatible change: TRUENAME now considers the truename of
2443 a file naming a directory to be the pathname with :DIRECTORY
2444 component indicating that directory.
2445 * minor incompatible change: a NAMED clause in the extended form of
2446 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2447 reason for the previous behaviour is unclear.
2448 * more systematization and improvement of CLOS and MOP conformance
2449 in PCL (thanks to Gerd Moellman and Pierre Mai):
2450 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2452 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2453 primary methods with no specializers;
2454 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2456 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2457 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2458 FORWARD-REFERENCED-CLASSes; error reporting on
2459 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2461 ** SXHASH on CLOS instances now uses a slot internal to the
2462 instance to return different numbers on distinct instances,
2463 while preserving the same return value through invocations of
2465 ** DEFMETHOD signals errors when methods with longer incongruent
2466 lambda lists are added to generic functions;
2467 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2468 CLASS, as specified in AMOP;
2469 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2470 on the order returned by the primary method for classes of
2471 class STANDARD-CLASS;
2472 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2473 * fixed some bugs shown by Paul Dietz' test suite:
2474 ** DOLIST puts its body in TAGBODY;
2475 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2477 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2478 value producing form;
2479 ** if more variables are given to PROGV than values, extra
2480 variables are bound and made to have no value;
2481 ** NSUBSTITUTE on list arguments gets the right answer with
2483 ** ELT signals an error of type TYPE-ERROR when the index argument
2484 is not a valid sequence index;
2485 ** LOOP signals (at macroexpansion time) an error of type
2486 PROGRAM-ERROR when duplicate variable names are found;
2487 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2488 ** FUNCALL of special-operators now cause an error of type
2490 ** PSETQ now works as required in the presence of side-effecting
2491 symbol-macro places;
2492 ** NCONC accepts any object as its last argument;
2493 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2495 ** loop-for-as-package does not require a package to be explicitely
2497 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2499 * fixed bug 166: compiler preserves "there is a way to go"
2500 invariant when deleting code.
2501 * fixed bug 172: macro lambda lists with required arguments after
2502 &REST arguments now cause an error to be signalled. (thanks to
2504 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2505 bug. (thanks to Matthew Danish)
2506 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2508 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2509 arguments are lexically rebound. (thanks to Gerd Moellmann and
2511 * fixed bug 194: error messages are now more informative when there
2512 is no primary method applicable in a call to a generic
2513 function. (thanks to Gerd Moellmann)
2514 * fixed bug in command line argument checking (thanks to Julian
2516 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2517 (thanks to Matthew Danish)
2518 * incremented fasl file version number, because of the
2519 SXHASH-related changes in the layout of CLOS data structures
2521 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2522 * minor incompatible change: The runtime (the Unix executable named
2523 "sbcl") is now much pickier about the .core files it will load.
2524 Essentially it now requires .core files to descend from the same
2525 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2526 as the runtime does. (The intent is to prevent the crashes which
2527 can occur, and which can even be reported as mysterious failures,
2528 when people patch the sources or change the build parameters
2529 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2530 sbcl and .core files.)
2531 * fixed bug: VALUES-LIST is no longer optimized away.
2532 * fixed bug 142: The FFI conversion of C string values to Lisp
2533 string values no longer conses excessively. (thanks to Nathan
2534 Froyd porting Raymond Toy's fix to CMU CL)
2535 * began to systematize and improve MOP conformance in PCL (thanks to
2536 Nathan Froyd, Gerd Moellman and Pierre Mai):
2537 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2539 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2540 ** FINALIZE-INHERITANCE is now called on class finalization;
2541 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2542 argument precedence order.
2543 * fixed bug 202: The compiler no longer fails on functions whose
2544 derived types contradict their declared type.
2545 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2546 so it can be non-toplevel.
2547 * The fasl file version number has changed (because of the new
2548 implementation of DEFMACRO).
2549 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2550 safe code, that any length requirement by their type-specifier
2551 argument is valid. The exceptions to this are described in bug
2553 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2554 functions now check the types of their inputs as required by ANSI.
2555 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2556 introduced symbol is DECLAREd to be SPECIAL.
2557 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2558 * fixed bug: :COUNT argument to sequence functions may be negative
2559 * fixed bug: body of DO-SYMBOLS may contain declarations
2560 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2561 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2562 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2563 symbol macro only once
2564 * fixed printing of call frame when argument list is unavailable
2565 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2566 * compiler no longer signals WARNING on unknown keyword
2569 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2570 * A beta-quality port to the mips architecture running Linux,
2571 based on the old CMUCL backend, has been made. It has been tested
2572 on a big-endian kernel, and works sufficiently well to be able to
2573 rebuild itself; it has not been tested in little-endian mode.
2574 * fixed an inconsistency between gencgc.c and purify.c which made
2575 dumping/loading .core files unreliable
2576 * fixed bug 120a: The compiler now deals correctly with IFs where
2577 the consequent is the same as the alternative, instead of
2578 misderiving the return type. (thanks to Alexey Dejneka)
2579 * fixed bug 113: Logical pathnames are now dumpable (the logical
2580 host is resolved at load-time, throwing an error if it is not
2582 * fixed bug 174: FORMAT's error message is slightly clearer when a
2583 non-printing character is used in a format directive.
2584 * fixed several bugs in compiler checking of type declarations, i.e.
2585 violations of the Python "declarations are assertions" principle
2586 (thanks to Alexey Dejneka)
2587 * fixed several bugs in PCL's error checking (thanks to Gerd
2589 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2591 * fixed bug in compilation of functions as first class values
2592 (thanks to Antonio Martinez-Shotton)
2593 * The compiler's handling TYPE-ERRORs which it can prove will
2594 inevitably happen at runtime has been cleaned up and corrected
2595 in several ways. (thanks to Alexey Dejneka)
2596 * improved argument type checking for various basic arithmetic
2597 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2598 lavished on them in the past that they can be compiled in many
2599 ways in different special cases
2600 * fixed bug 181: compiler checks validity of user supplied type
2602 * cleaned up code flushing in optimization: Function calls which
2603 should signal errors for safety purposes (e.g. which ANSI says
2604 should signal errors when their arguments are of incorrect type)
2605 are no longer optimized away.
2606 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2607 * incremented fasl file version number, because changes in the
2608 implementation of sequence functions like COERCE caused
2609 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2610 in old inline expansions) to become undefined. (Actually these
2611 changes were later undone, so we might very well be binary
2612 compatible with 0.7.7 after all, but leaving the version number
2613 incremented seemed like the simplest and most conservative
2616 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2617 * An alpha-quality port to the parisc architecture running Linux,
2618 based on the old CMUCL backend, has been made. This, even more so
2619 than the other backends, should be considered still a work in
2620 progress; known problems include that the Linux kernel in 64-bit
2621 mode does not propagate the correct sigcontext structure to
2622 userspace, and consequently SBCL on a parisc64 kernel will not
2624 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2625 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2626 suppressed.) Also now that the compiler is looking at declarations
2627 in the environment, it checks optimization declarations as well,
2628 and suppresses inlining when (> DEBUG SPEED).
2629 * More fixes have been made to treatment of floating point exception
2630 treatment and other Unix signals. In particular, floating point
2631 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2632 * The detection and handling of control stack exhaustion (infinite
2633 or very deeply nested recursion) has changed. Stack exhaustion
2634 detection is now done by write-protecting pages at the OS level
2635 and applies at all optimization settings; when found, a
2636 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2637 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2638 be caught using IGNORE-ERRORS.
2639 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2640 correctly when transforming recursive LABELS functions to LETs.
2641 (thanks to Alexey Dejneka)
2642 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2643 that are names of constants or global variables.
2644 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2645 alien routines with docstrings.
2646 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2647 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2649 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2650 (thanks to Eric Marsden)
2651 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2652 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2653 * Bug fix: The SPARC backend can now compile functions involving
2654 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2655 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2656 to a functions expecting a PATHNAME-DESIGNATOR.
2657 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2658 lambda lists. (thanks to Alexey Dejneka)
2659 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2660 functions so that EXPORTing the name of the class doesn't cause
2661 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2662 to Antonio Martinez for reporting this)
2663 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2664 constant-folded without failing an assertion. (thanks to Einar
2665 Floystad Dorum for reporting this)
2666 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2667 types are now dealt with more correctly by the compiler.
2668 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2669 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2670 behaviour analogous to RENAME-FILE. This puts its behaviour more
2671 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2673 * The fasl file version number has changed again. (because of the
2674 bug fix involving the names of PCL MAKE-INSTANCE functions)
2676 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2677 * bug fix: Floating point exceptions are treated much more
2678 consistently on the x86/Linux and PPC/Linux platforms.
2679 * Array initialization with :INITIAL-ELEMENT is now much faster for
2680 cases when the compiler cannot open code the array creation, but
2681 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2682 array accesses have also seen a speed increase.
2683 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2684 specified. (This was at the root of some bad interactions between
2685 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2687 * bug fix: Internal error arguments for undefined functions are now
2688 computed correctly on the PPC/Linux platform.
2689 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2690 Raymond Toy's patch for CMU CL)
2691 * Support for the Solaris 9 operating environment has been included
2692 (thanks to Daniel Merritt)
2693 * A very ugly but hopefully complete draft of the missing FFI chapter
2694 of the manual has been created by reformatting the corresponding
2695 CMU CL manual chapter into (currently very ugly and incoherent)
2696 DocBook and bringing it up to date for SBCL behavior. Thus, the
2697 manual is now essentially complete, at least by my extreme
2698 once-and-only-once standards, whereby it's acceptable to refer to
2699 the doc strings of SB-EXT functions as the primary documentation.
2700 * The fasl file version number has changed again, due to cleanup of
2701 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2702 is no longer a static symbol.)
2704 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2705 * SBCL now builds with OpenMCL (version 0.12) as the
2706 cross-compilation host; also, more progress has been made toward
2707 bootstrapping under CLISP.
2708 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2710 * bug 158 fixed: The compiler can now deal with integer loop
2711 increments different from 1; fixing this turned out also to fix
2713 * bug 169 fixed: no more bogus warnings about using lexical bindings
2714 despite the presence of perfectly good SPECIAL declarations (thanks
2715 to David Lichteblau)
2716 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2717 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2718 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2720 * bug 180 fixed: Method combination specifications no longer ignore
2721 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2722 * bug fix: Structure type predicate functions now check their argument
2723 count as they should.
2724 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2725 correctly. (thanks to Pierre Mai)
2726 * minor incompatible change: The --noprogrammer option is deprecated
2727 in favor of the new --disable-debugger option, which is very similar.
2728 (The major difference is that it takes effect at a slightly different
2729 time at startup, causing handling of errors in --sysinit and
2730 --userinit files will be affected differently.) The
2731 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2732 been added to allow this functionality to be controlled from ordinary
2733 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2734 maintainers, who might want to run non-interactive scripts to
2735 build SBCL cores which will later be used interactively.)
2736 * minor incompatible change: The LOAD function no longer, when given
2737 a wild pathname to load, loads all files matching that pathname.
2738 Instead, an error of type FILE-ERROR is signalled.
2740 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2741 * bug 147 fixed: The compiler preserves its block link/count
2742 invariants more correctly now so that it doesn't crash. (thanks
2744 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2746 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2747 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2748 no-value-for-this-character as NIL (as specified by ANSI).
2749 * HOST-NAMESTRING on physical pathnames now returns a string that is
2750 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2751 (thanks to Christophe Rhodes)
2752 * The Alpha port handles icache flushing more correctly. (thanks to
2754 * More progress has been made toward bootstrapping under CLISP. (thanks
2755 to Christophe Rhodes)
2756 * The fasl file format has changed again, because dynamic loading
2757 on OpenBSD (which has non-ELF object files) motivated some cleanups
2758 in the way that foreign symbols are transformed and passed around.
2759 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2760 is no longer treated as whitespace by the reader, but instead as
2761 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2762 |A
\7fB|, instead of A as it used to.
2764 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2765 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2766 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2767 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2768 this as of 0.7.1.45, but was left out of the previous news section
2769 (thanks to Dan Barlow)
2770 * SBCL now runs on the Solaris operating system on SPARC architectures
2771 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2772 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2773 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2774 * SPARC backend cleanups, allowing builds of cores optimized for V8
2775 and V9 SPARCS, and also emission of code targeted to a particular
2776 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2778 * SBCL is closer to bootstrapping under CLISP, thanks to various
2779 fixes by Christophe Rhodes.
2780 * The fasl file format has changed again, to allow the compiler's
2781 INFO database to support symbol macros.
2782 * The user manual (in doc/) is formatted into HTML more nicely.
2783 (thanks to coreythomas)
2784 * The system is smarter about SUBTYPEP relationships, especially
2785 those involving NOT types (including types such as ATOM which are
2786 represented internally using NOT types). Thus SUBTYPEP is less
2787 likely to return (VALUES NIL NIL) in general, and in particular
2788 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2790 * The fasl file format has changed again, because the internal
2791 representation of types now includes a new slot to support the new
2792 SUBTYPEP-of-NOT-types logic.
2793 * (not a change in the main branch of SBCL, but a related prototype
2794 which can hopefully be merged into the main branch of SBCL in the
2795 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2796 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2797 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2798 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2799 dispatch macro character combinations. (thanks to Alexey Dejneka)
2800 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2801 that superficially look like logical namestrings correctly.
2802 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2804 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2805 default supplied-p) for &optional and &key arguments. (thanks to
2808 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2809 * incompatible change: The compiler is now less aggressive about
2810 tail call optimization, doing it only when (> SPACE DEBUG) or
2811 (> SPEED DEBUG). (This is an incompatible change because there are
2812 programs which relied on the old CMU-CL-style behavior to optimize
2813 away their unbounded recursion which will now die of stack overflow.)
2814 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2815 for non-GENCGC systems has been increased to 20M (since that
2816 seems much closer to the likely performance optimum for modern
2817 systems than the old 4M value was)
2818 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2819 and *DEBUG-PRINT-LEVEL*
2820 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2821 of CMU CL's support for SPARC, and various endianness and other
2822 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2823 * new syntactic sugar for the Unix command line: --load foo.bar is now
2824 an alternate notation for --eval '(load "foo.bar")'.
2826 ** The system now detects stack overflow and handles it gracefully,
2827 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2828 optimization settings. (This is a good thing in general, and
2829 its introduction in this version should be particularly timely
2830 for anyone whose code fails because of suppression of tail
2832 ** The system now hunts for the C variable "environ" in a more
2833 devious way, to avoid segfaults when the C library version differs
2834 between compile time and run time. (thanks to Christophe Rhodes)
2835 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2836 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2837 ** The compiler no longer issues bogus style warnings for undefined
2838 classes in the same source file as the DEFCLASSes which defined
2839 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2841 ** fixes in CONDITION class precedence list for undefined function
2842 errors (thanks to Alexei Dejneka)
2843 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2844 correctly. (thanks to Dan Barlow)
2845 ** portability fixes aiming at bootstrapping under CLISP (thanks
2846 to Dave McDonald and Christophe Rhodes)
2847 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2848 ** fixes in type translation and and type inference (thanks to
2850 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2851 ** various fixes in the new ports (thanks to Dan Barlow)
2852 * several changes related to debugging:
2853 ** suppression of tail recursion, as noted above
2854 ** stack overflow detection, as noted above
2855 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2856 is now the default. (For some time encapsulation has been more
2857 reliable than the breakpoint-based :ENCAPSULATE NIL
2858 implementation, at least on X86 systems; and I just noticed that
2859 encapsulation also seems closer to the spirit of the ANSI
2862 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2864 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2865 up properly again. (There was a packaging bug in 0.7.0 which
2866 left their definitions in SB-SYS::LOAD-FOREIGN and
2867 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2868 vital for most things which interface to C-level interfaces,
2869 like extensions working with sockets or databases or
2870 Perl-compatible regexes or whatever, and the need to fix
2871 this bug is the main reason that 0.7.1 was released so
2873 ** DEFGENERIC is now choosier about the methods it redefines, so that
2874 reLOADing a previously-LOADed file containing DEFGENERICs does
2875 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2876 cycle now works as it should. (thanks to Alexey Dejneka)
2877 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2878 fixed by Christophe Rhodes. (He actually submitted this patch
2879 months ago, and I delayed until after 0.7.0.)
2880 ** Bug 111 (internal compiler confusion about runtime checks on
2881 FUNCTION types) was fixed by Alexey Dejneka.
2882 * Some internal cleanups (getting rid of variables which aren't
2883 needed now that the byte interpreter is gone) caused the fasl
2884 file format number to change again.
2886 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2887 * major incompatible change: The default fasl file extension, i.e. the
2888 default extension for files produced by COMPILE-FILE, has changed
2889 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2891 ** There are many changes in the implementation of the compiler.
2892 SBCL is now essentially a compiler-only implementation of ANSI
2893 Common Lisp. EVAL still "interprets" a few special cases, but
2894 almost all the interesting cases are handled by creating
2895 a LAMBDA expression, calling COMPILE on it, then calling
2896 FUNCALL on the result.
2897 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2898 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2899 Since the code is newer, there might still be some new bugs
2900 (though not as many as before Martin Atzmueller's fixes:-). But
2901 the new code is substantially simpler and clearer, and hopefully
2902 any remaining bugs will be simpler, less fundamental, and more
2903 fixable then the bugs in the old code.
2904 ** The revised compiler is still a little unsteady on its feet.
2906 *** The debugging information it produces (particularly the names
2907 of FUNCTION objects) is sometimes much less useful than what
2908 the old compiler produced.
2909 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2910 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2911 within a MACROLET) has been temporarily weakened.
2912 ** There are new compiler optimizations for various functions:
2913 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2914 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2915 *** the math functions TRUNCATE, FLOOR, and CEILING
2916 *** the function-of-all-trades COERCE
2917 Mostly these should be transparent, but there's one
2918 potentially-annoying problem (bug 117): when the compiler
2919 inline-expands a function and does type analysis on the result,
2920 it can create control paths which have type mismatches, and
2921 when it can't prove that those control paths aren't taken,
2922 it will issue WARNINGs about the type mismatches. This is
2923 a particular problem in practice for the new sequence functions.
2924 It's not clear how this should be fixed, and for now, a
2925 workaround is given in the entry for 117 in the BUGS file.
2926 ** (Because of the interaction between the two previous items --
2927 occasional inlining problems and new inline expansions -- some
2928 of the new sequence function optimizations won't really kick in
2929 completely until debugging information, and then inlining, are
2930 straightened out in some future version.)
2931 * minor incompatible changes:
2932 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2933 DIRECTORY no longer implicitly promotes NIL slots of its
2934 pathname argument to :WILD. In particular, when you ask for the
2935 contents of a directory (which you used to be able to do without
2936 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2937 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2938 ** changes in behavior that ANSI explicitly defines to be
2939 implementation dependent:
2940 *** The new compiler-only implementation still conforms with ANSI,
2941 but acts a little different than before. Besides the obvious
2942 changes in performance tradeoffs (that the cost per form passed
2943 to EVAL has gone up, and the cost per form executed by EVAL
2944 has gone down), the behavior of the system changes a little
2945 because there are no longer any interpreted function objects.
2946 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2947 e.g. doing COMPILE on the output of interactive DEFUN is
2949 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2951 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2952 has changed from (:CL) to NIL.
2953 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2954 e.g. #\Newline and #\Tab, don't have names specified in the
2955 ANSI Common Lisp standard, is now based on their ASCII symbolic
2956 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2957 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2958 are no longer used for output.
2959 ** changes in internal implementation constants:
2960 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2961 4 million. (If your application spends a lot of time GCing and
2962 you have a lot of RAM, you might want to experiment with
2963 increasing it even more.)
2964 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2965 However, almost all old code should still continue to work without
2966 immediate update, as SB-C-CALL is now a (deprecated) nickname
2968 ** Old operator names in the style DEF-FOO are now deprecated in
2969 favor of new corresponding names DEFINE-FOO, for consistency with
2970 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2971 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2972 internal symbols, but a few supported extensions like
2973 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2974 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2975 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2976 etc. as you get deeper into recursive calls to the debugger
2977 command loop, instead of the old "5]", "5]]", "5]]]"
2978 sequence. (I was motivated to do this when squabbles between
2979 ILISP and SBCL left me very deeply nested in the debugger. In the
2980 short term, this change will probably provoke more ILISP/SBCL
2981 squabbles, but hopefully it will be an improvement in the long run.)
2982 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2983 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2984 function, since declaiming return types involving aliens is
2985 (1) annoyingly messy to do by hand and (2) vital to efficient
2986 compilation of code which calls such functions.
2987 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2988 longer reexported by the SB-EXT package. They're solely useful
2989 for alien code, so it seems more logical that you should get
2990 them from the SB-ALIEN package, not in SB-EXT.
2991 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2992 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2993 features. Instead, the code that they used to control is always
2994 built into the system.
2995 * many other bug fixes
2996 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2997 advantage of the new EVAL-WHEN stuff and to clean them up in
2998 general, and they are now more ANSI-compliant in a number of
2999 ways. Martin Atzmueller is responsible for a lot of this.
3000 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3002 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3003 *** correct ERROR type for various file operations
3004 *** some fixes for Lisp streams
3005 *** DEFMETHOD syntax checking
3006 *** changing old weird representation of debug information as
3007 strings (which, among their other deficiencies, don't transform
3008 correctly when you rename packages, and don't change their
3009 print representation when you change things like *PACKAGE*
3010 and *PRINT-LENGTH*) to symbols and lists of symbols
3011 He also made several improvements and fixed several bugs in DESCRIBE.
3012 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3014 *** misbehavior of WRITE-STRING/WRITE-LINE
3015 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3016 and several other LOOP problems as well
3017 *** DIRECTORY when similar filenames are present
3018 *** DEFGENERIC with :METHOD options
3019 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3020 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3021 *** argument ordering in FIND with :TEST option
3022 *** mishandled package designator argument in APROPOS-LIST
3023 *** various problems in the backquote readmacro
3024 *** a bug in APROPOS
3025 *** probably some others that I'm not describing very well here,
3026 since the CVS log documents them by reference to sbcl-devel
3027 messages, and the SourceForge archives aren't working well.:-(
3028 ** Dan Barlow improved the Alpha port (and is making progress on the
3029 PPC port, for those of you who think different).
3030 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3031 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3032 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3033 continues to work on the SPARC port (for those of you in a position
3034 to look down upon our little PC-compatible boxes from a great height).
3035 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3036 and uses that copy, rather than the current dynamic value, when
3037 it's trying to decide whether to truncate output. Thus e.g.
3038 (let ((*print-lines* 50))
3039 (pprint-logical-block (stream nil)
3041 (let ((*print-lines* 8))
3042 (print (aref possiblybigthings i) stream)))))
3043 should now truncate the logical block only at 50 lines, instead of
3044 often truncating it at 8 lines, as it did before.
3045 * The doc/cmucl/ directory, containing old CMU CL documentation
3046 from the time of the fork, is no longer part of the base system.
3047 SourceForge has shut down its anonymous FTP service, and with it
3048 my original plan for distributing the old CMU CL documentation
3049 there. For now, if you need these files you can download an old
3050 SBCL source release and extract them from it.
3051 * The fasl file version number changed again, for dozens of reasons,
3052 some of which are apparent above.
3054 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3055 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3056 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3057 patch, so that DISASSEMBLE output is much nicer.
3058 * The code in the SB-PROFILE package now seems reasonably stable.
3059 I still haven't decided what the final interface should look like
3060 (I'd like PROFILE to interact cleanly with TRACE, since both
3061 facilities use function encapsulation) but if you have a need
3062 for profiling now, you can probably use it successfully with
3063 the current CMU-CL-style interface.
3064 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3065 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3066 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3067 link now returns the dangling link itself, and for similar
3068 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3069 link itself. (In these cases the old code signalled an error and
3070 looped endlessly, respectively.) Thus, DIRECTORY now works even
3071 in the presence of dangling and cyclic symbolic links.
3072 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3073 is now a supported extension again, since the consensus on
3074 sbcl-devel was that it can be useful for ordinary development
3075 work, not just for debugging SBCL itself.
3076 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3077 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3078 that currently-defined functions might be redefined later with
3079 different return types.
3080 * Hash tables can be printed readably, as inspired by CMU CL code
3081 of Eric Marsden and SBCL code of Martin Atzmueller.
3082 * better error handling in CLOS method combination, thanks to
3083 Martin Atzmueller porting Pierre Mai's CMU CL patches
3084 * more overflow fixes for >16Mbyte I/O buffers
3085 * A bug in READ has been fixed, so that now a single Ctrl-D
3086 character suffices to cause end-of-file on character streams.
3087 In particular, now you only need one Ctrl-D at the command
3088 line (not two) to exit SBCL.
3089 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3091 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3092 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3093 does the right thing.
3094 * The implementation of some type tests, especially for CONDITION
3095 types, is now tidier and maybe faster, due to CMU CL code
3096 originally by Douglas Crosher, ported by Martin Atzmueller.
3097 * Some math functions have been fixed, and there are new
3098 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3099 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3100 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3101 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3102 likely to be built into sbcl-0.7.0.)
3103 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3104 CL, ported to SBCL by Martin Atzmueller)
3105 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3106 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3107 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3108 * There's a new slam.sh hack to shorten the edit/compile/debug
3109 cycle for low-level changes to SBCL itself, and a new
3110 :SB-AFTER-XC-CORE target feature to control the generation of
3111 the after-xc.core file needed by slam.sh.
3112 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3113 COMPILE-FILE is no longer supported, so that now every function
3114 gets an entry point, so that block compilation looks a little
3115 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3116 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3117 returns the number of bytes consed since the system started,
3118 rather than the number consed since the first time the function
3119 was called. (The new definition parallels ANSI functions like
3120 CL:GET-INTERNAL-RUN-TIME.)
3121 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3122 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3123 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3124 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3125 * Fasl file version numbers are now independent of the target CPU,
3126 since historically most system changes which required version
3127 number changes have affected all CPUs equally. Similarly,
3128 the byte fasl file version is now equal to the ordinary
3131 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3132 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3133 is no longer recognized. I apologize for this, because it was
3134 listed in SB-EXT as a supported extension, but I found that
3135 its existing behavior was poorly specified, as well as incorrectly
3136 specified, and it looked like too much of a mess to straighten it
3137 out. I have enough on my hands trying to get ANSI stuff to work..
3138 * many patches ported from CMU CL by Martin Atzmueller, with
3139 half a dozen bug fixes in pretty-printing and the debugger, and
3140 half a dozen others elsewhere
3141 * fixed bug 13: Floating point infinities are now supported again.
3142 They might still be a little bit flaky, but thanks to bug reports
3143 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3144 as flaky as they were.
3145 * The --noprogrammer command line option is now supported. (Its
3146 behavior is slightly different in detail from what the old man
3147 page claimed it would do, but it's still appropriate under the
3148 same circumstances that the man page talks about.)
3149 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3150 are now supported, and enabled by default. Thus, the compiler can
3151 handle many floating point and complex operations much less
3152 inefficiently. (Thus e.g. you can implement a complex FFT
3154 * The compiler now detects type mismatches between DECLAIM FTYPE
3155 and DEFUN better, and implements CHECK-TYPE more correctly, and
3156 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3157 thanks to patches from Martin Atzmueller.
3158 * various fixes to make the cross-compiler more portable to
3159 ANSI-conforming-but-different cross-compilation hosts (notably
3160 Lispworks for Windows, following bug reports from Arthur Lemmens)
3161 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3162 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3163 fixed thanks to Pierre Mai's CMU CL patches.
3164 * fixes to keep the system from overflowing internal counters when
3165 it tries to use i/o buffers larger than 16M bytes
3166 * fixed bug 45a: Various internal functions required to support
3167 complex special functions have been merged from CMU CL sources.
3168 (When I was first setting up SBCL, I misunderstood a compile-time
3169 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3170 * improved support for type intersection and union, fixing bug 12
3171 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3172 more obscure bugs as well
3173 * some steps toward byte-compiling non-performance-critical
3174 parts of the system, courtesy of patches from Martin Atzmueller
3175 * Christophe Rhodes has made some debian packages of sbcl at
3176 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3177 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3178 stable, but are nonetheless usable. When he's ready, I'd be happy
3179 to add them to the SourceForge "File Releases" section. (And if
3180 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3181 * new fasl file format version number (because of changes in
3182 internal representation of (OR ..) types to accommodate the new
3183 support for (AND ..) types, among other things)
3185 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3186 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3188 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3190 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3191 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3192 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3193 * DESCRIBE now works on structure objects again.
3194 * Most function call argument type mismatches are now handled as
3195 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3196 know whether the function will be redefined before the call is
3197 executed. (The compiler could flag local calls with full WARNINGs,
3198 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3199 it doesn't keep track of enough information to know whether calls
3200 are local in this sense.)
3201 * Compiler output is now more verbose, with messages truncated
3202 later than before. (There should be some supported way for users
3203 to override the default verbosity, but I haven't decided how to
3204 provide it yet, so this behavior is still controlled by the internal
3205 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3206 src/compiler/ir1util.lisp.)
3207 * Fasl file format version numbers have increased again, because
3208 support for the Gray streams extension changes the layout of the
3209 system's STREAM objects.
3210 * The Gray subclassable streams extension now works, thanks to a
3211 patch from Martin Atzmueller.
3212 * The full LOAD-FOREIGN extension (not just the primitive
3213 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3214 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3215 but like most other programs, it defaults to copying the Unix
3216 environment from the original process instead of starting the
3217 new process in an empty environment.
3218 * Extensions which manipulate the Unix environment now support
3219 an :ENVIRONMENT keyword option which doesn't smash case or
3220 do other bad things. The CMU-CL-style :ENV option is retained
3221 for porting convenience.
3222 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3223 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3225 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3227 * A patch from Martin Atzmueller seems to have solved the SIGINT
3228 problem, and as far as we know, signal-handling now works cleanly.
3229 (If you find any new bugs, please report them!)
3230 * The system no longer defaults Lisp source file names to types
3231 ".l", ".cl", or ".lsp", but only to ".lisp".
3232 * The compiler no longer uses special default file extensions for
3233 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3234 seems to expect a single default extension for all compiled code,
3235 and there's no compelling reason to try to stretch the standard
3236 to allow two different extensions.) Instead, byte-compiled files
3237 default to the same extension as native-compiled files.
3238 * Fasl file format version numbers have increased again, because
3239 a rearrangement of internal implementation packages made some
3240 dumped symbols in old fasl files unreadable in new cores.
3241 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3242 many fewer weird special cases.
3243 * Bug #17 (differing COMPILE-FILE behavior between logical and
3244 physical pathnames) has been fixed, and some related misbehavior too,
3245 thanks to a patch from Martin Atzmueller.
3246 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3247 by Tim Moore, ported to SBCL by Martin Atzmueller.
3248 * Martin Atzmueller fixed several filesystem-related problems,
3249 including bug #36, in part by porting CMU CL patches, which were
3250 written in part by Paul Werkowski.
3251 * More compiler warnings in src/runtime/ are gone, thanks to
3252 more patches from Martin Atzmueller.
3253 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3256 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3258 * DESCRIBE now works on CONDITION objects.
3259 * The debugger now handles errors which arise when trying to print
3260 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3262 * The build system now uses an additional file, customize-target-features.lisp,
3263 to allow local modifications to the target *FEATURES* list. (The point of
3264 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3265 debugging features enabled, without having to worry about propagating it
3266 into everyone's system when I do a "cvs update".) When no
3267 customize-target-features.lisp file exists, the target *FEATURES* list
3268 should be constructed the same way as before.
3269 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3270 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3271 warn about behavior which is undefined under the ANSI spec. Note: This
3272 is specified by ANSI, but it's not very popular with programmers.
3273 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3274 macro in the SBCL sources for an example of a workaround which you
3275 might use to make portable ANSI-standard code which does what you want.
3276 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3277 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3278 when it's used as a non-toplevel form. (This is required in order
3279 to implement the DEFCONSTANT-EQX macro.)
3280 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3281 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3282 funny things, due to bugs in the implementation of EVAL-WHEN
3283 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3284 non-toplevel DEFCONSTANTs are uncommon.)
3285 * The core file version number and fasl file version number have been
3286 incremented, because the old noncompliant DEFCONSTANT behavior involved
3287 calling functions which no longer exist, and because I also took the
3288 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3289 * fixed bug 1 (error handling before read-eval-print loop starts), and
3290 redid debugger restarts and related debugger commands somewhat while
3292 ** The QUIT debugger command is gone, since it did something
3293 rather different than the SB-EXT:QUIT command, and since it never
3294 worked properly outside the main toplevel read/eval/print loop.
3295 Invoking the new TOPLEVEL restart provides the same functionality.
3296 ** The GO debugger command is also gone, since you can just invoke
3297 the CONTINUE restart directly instead.
3298 ** The TOP debugger command is also gone, since it's redundant with the
3299 FRAME 0 command, and since it interfered with abbreviations for the
3301 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3303 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3304 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3305 some porting work by Martin Atzmueller)
3306 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3307 with a boatload of patches which he ported to SBCL. Now that those
3309 ** The system tries to make sure that its low-priority messages
3310 are prefixed by semicolons, to help people who like to use
3311 syntax highlighting in their ILISP buffer. (This patch
3312 was originally due to Raymond Toy.)
3313 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3314 patches originally written by Raymond Toy.
3315 ** The compiler understands coercion between single-value and
3316 multiple-VALUES type expressions better, getting rid of some very
3317 weird behavior, thanks to patches originally by Robert MacLachlan
3318 and Douglas Crosher.
3319 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3320 lambda lists, thanks to a patch originally by Pierre Mai.
3321 ** The system no longer bogusly warns about "abbreviated type
3323 ** The compiler gets less confused by inlining and RETURN-FROM,
3324 thanks to some patches originally by Tim Moore.
3325 ** The system no longer hangs when dumping circular lists to fasl
3326 files, thanks to a patch originally from Douglas Crosher.
3327 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3328 undefined function error.
3329 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3330 in structure slot initforms) for now, documented workaround instead:-|
3331 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3332 * fixed bug 5: added stubs for various Gray stream functions called
3333 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3334 installed, at least appropriate type errors are generated
3335 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3336 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3337 consistently in DEFMETHOD forms.
3338 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3339 it doesn't seem to affect SBCL after all
3340 * The C runtime system now builds with better optimization and many
3341 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3343 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3345 * The system is now under CVS at SourceForge (instead of the
3346 CVS repository on my home machine).
3347 * The new signal handling code has been tweaked to treat register
3348 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3349 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3350 downstream, e.g. in debug-int.lisp, has implicit dependencies
3351 on the unsignedness of integer representation of machine words,
3352 and that caused the system to bomb out with infinite regress
3353 when trying to recover from type errors involving signed values,
3354 e.g. (BUTLAST '(1 2 3) -1).)
3355 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3356 (This was one of the bugs Peter Van Eynde reported back in July.)
3357 * The system now uses code inspired by Colin Walters' O(N)
3358 implementation of MAP (from the cmucl-imp@cons.org mailing
3359 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3360 inline the MAP operation, and there is more than one
3361 sequence argument to the MAP call (so that it can't just
3362 do ETYPECASE once and for all based on the type of the
3363 single sequence argument). (The old non-inline implementation
3364 of the general M-argument sequence-of-length-N case required
3365 O(M*N*N) time when any of the sequence arguments were LISTs.)
3366 * The QUIT :UNIX-CODE keyword argument has been renamed to
3367 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3368 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3370 * Raymond Wiker's patches to port dynamic loading from Linux to
3371 FreeBSD have been added.
3372 * The BUGS file is now more nearly up to date, thanks in large part
3373 to Martin Atzmueller's review of it.
3374 * The debugger now flushes standard output streams before it begins
3375 its output ("debugger invoked" and so forth).
3376 * The core version number and fasl file version number have both
3377 been incremented, because of incompatible changes in the layout
3379 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3380 used to not be called for a saved Lisp image.)
3381 * Martin Atzmueller's version of a patch to fix a compiler crash,
3382 as posted on sbcl-devel 13 September 2000, has been installed.
3383 * Instead of installing Martin Atzmueller's patch for the
3384 compiler transform for SUBSEQ, I deleted the compiler transform,
3385 and transforms for some similar consing operations.
3386 * A bug in signal handling which kept TRACE from working on OpenBSD
3388 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3389 away by constant folding
3390 * The system now defines its address space constants in one place
3391 (in the Lisp sources), and propagates them automatically elsewhere
3392 (through GENESIS and the sbcl.h file). Therefore, patching the
3393 address map is less unnecessarily tedious and error-prone. The
3394 Lisp names of address space constants have also been systematized.
3395 * CVS tags like dollar-Header-dollar have been removed from
3396 the sources, because they have never saved me trouble and
3397 they've been source of trouble working with patches and other
3398 diff-related operations.
3399 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3400 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3402 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3404 * The system has been ported to OpenBSD.
3405 * The system now compiles with a simple "sh make.sh" on the systems
3406 that it's supported on. I.e., now you no longer need to tweak
3407 text in the target-features.lisp-expr and symlinks in src/runtime/
3408 by hand, the make.sh takes care of it for you.
3409 * The system is no longer so grossly inefficient when compiling code
3410 involving vectors implemented as general (not simple) vectors (VECTOR T),
3411 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3412 which dares to use the various sequence functions on non-simple
3413 vectors, takes less of a performance hit.
3414 * There is now a primitive type predicate VECTOR-T-P
3415 to test for the (VECTOR T) type, so that e.g.
3416 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3417 can now be compiled with some semblance of efficiency. (The old code
3418 turned the type declaration into a full call to %TYPEP at runtime!)
3419 * AREF on (VECTOR T) is still not fast, since it's still compiled
3420 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3421 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3422 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3423 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3424 without making full calls to SUBTYPEP at runtime.
3425 (Some analogous efficiency issues for non-simple vectors specialized to
3426 element types other than T, or for non-simple multidimensional arrays,
3427 have not been addressed. They could almost certainly be handled the
3428 same way if anyone is motivated to do so.)
3429 * The changes in array handling break binary compatibility, so
3430 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3431 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3432 instead of (VALUES T T).
3433 * By following the instructions that Dan Barlow posted to sbcl-devel
3434 on 2 July 2000, I was able to enable primitive dynamic object
3435 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3436 functionality is not implemented (since it calls ld to resolve
3437 library references automatically, requiring RUN-PROGRAM for its
3438 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3439 try to resolve library references) is now supported.
3440 * The system now flushes the standard output streams when it terminates,
3441 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3442 them at several other probably-convenient times, e.g. in each pass of
3443 the toplevel read-eval-print loop, and after evaluating a form given
3444 as an "--eval" command-line option. (These changes were motivated by a
3445 discussion of stream flushing issues on cmucl-imp in August 2000.)
3446 * The source transform for TYPEP of array types no longer assumes
3447 that an array whose element type is a not-yet-defined type
3448 is implemented as an array of T, but instead punts, so that the
3449 type will be interpreted at runtime.
3450 * There is now some support for cross-compiling in make.sh: each of
3451 the phases of make.sh has its own script. (This should be transparent
3452 to people doing ordinary, non-cross-compile builds.)
3453 * Since my laptop doesn't have hundreds of megabytes of memory like
3454 my desktop machine, I became more motivated to do some items on
3455 my to-do list in order to reduce the size of the system a little:
3456 ** Arrange for various needed-only-at-cold-init things to be
3457 uninterned after cold init. To support this, those things have
3458 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3459 symbols with such names are now uninterned after cold init).
3460 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3461 fasl files for cold load.
3462 ** Remove the old compiler structure pooling code (which used to
3463 be conditional on the target feature :SB-ALLOC) completely.
3464 ** Redo the representation of some data in cold init to be more compact.
3465 (I also looked into supporting byte compiled code at bootstrap time,
3466 which would probably reduce the size of the system a lot, but that
3467 looked too complicated, so I punted for now.)
3468 * The maximum signal nesting depth in the src/runtime/ support code has
3469 been reduced from 4096 to 256. (I don't know any reason for the very
3470 large old value. If the new smaller value turns out to break something,
3471 I'll probably just bump it back up.)
3472 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3474 * Many, many bugs reported by Peter Van Eynde have been added to
3475 the BUGS list; some have even been fixed.
3476 * While enabling dynamic object file loading, I tried to make the
3477 code easier to understand, renaming various functions and variables
3478 with less ambiguous names, and changing some function calling
3479 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3480 * While trying to figure out how to do the OpenBSD port, I tried to
3481 clean up some of the code in src/runtime/. In particular, I dropped
3482 support for non-POSIX signal handling, added various comments,
3483 tweaked the code to reduce the number of compilation warnings, and
3484 renamed some files to increase consistency.
3485 * To support the new automatic configuration functionality in make.sh,
3486 the source file target-features.lisp-expr has been replaced with the
3487 source file base-target-features.lisp-expr and the machine-generated
3488 file local-target-features.lisp-expr.
3489 * fixed a stupid quoting error in make.sh so that using CMU CL
3490 "lisp -batch" as cross-compilation host works again
3492 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3494 * DESCRIBE no longer tries to call itself recursively to describe
3495 bound/fbound values, so that it no longer fails on symbols which are
3496 bound to themselves (like keywords, T, and NIL).
3497 * DESCRIBE now works on generic functions.
3498 * The printer now prints less-screwed-up representations of closures
3499 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3500 * A private symbol is used instead of the :EMPTY keyword previously
3501 used to mark empty slots in hash tables. Thus
3502 (DEFVAR *HT* (MAKE-HASH-TABLE))
3503 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3504 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3505 now does what ANSI says that it should. (You can still get
3506 similar noncompliant behavior if bang on the hash table
3507 implementation with all the symbols you get back from
3508 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3509 This breaks binary compatibility, since tests for equality to
3510 :EMPTY are wired into things like the macroexpansion of
3511 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3513 * There's now a minimal placeholder implementation for CL:STEP,
3514 as required by ANSI.
3515 * An obscure bug in the interaction of the normal compiler, the byte
3516 compiler, inlining, and structure predicates has been patched
3517 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3518 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3520 * Missing ordinary arguments in a macro call are now detected even
3521 when the macro lambda list contains &KEY or &REST.
3522 * The debugger no longer complains about encountering the top of the
3523 stack when you type "FRAME 0" to explicitly instruct it to go to
3524 the top of the stack. And it now prints the frame you request even
3525 if it's the current frame (instead of saying "You are here.").
3526 * As specified by ANSI, the system now always prints keywords
3527 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3529 * The default initial SIZE of HASH-TABLEs is now smaller.
3530 * Type information from CLOS class dispatch is now propagated
3531 into DEFMETHOD bodies, so that e.g.
3532 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3534 is now basically equivalent to
3535 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3536 (DECLARE (TYPE SINGLE-FLOAT X))
3538 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3539 operation, without having to do run-time type dispatch.
3540 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3541 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3542 * Since I don't seem to be making big file reorganizations very often
3543 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3544 is overflowing my ability to conveniently back them up), I've finally
3545 checked the system into CVS. (The CVS repository is on my home system,
3546 not at SourceForge -- putting it on SourceForge might come later.)
3547 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3548 high-level GC-NOTIFY-FOO functions send their output. (There's
3549 still very little control of where low-level verbose GC functions
3550 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3551 less than it used to -- the GC-NOTIFY-FOO functions are now under
3552 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3553 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3554 in only one place in the source code, and propagates it automatically
3555 everywhere that it's needed. Thus e.g. when I bump the version from
3556 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3557 * The C source files now include boilerplate legalese and documentation
3558 at the head of each file (just as the Lisp source files already did).
3559 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3560 to his page will be replaced with a link to his new CLiki service.
3562 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3564 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3565 * The build process now looks for GNU make under the default name "gmake",
3566 instead of "make" as it used to. If GNU make is not available as "gmake"
3567 on your system, you can change this default behavior by setting the
3568 GNUMAKE environment variable.
3569 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3570 can build without error under CMU CL.
3572 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3574 * There is now a partial SBCL user manual (with some new text and some
3575 text cribbed from the CMU CL manual).
3576 * The beginnings of a profiler have been added (starting with the
3577 CMU CL profiler and simplifying and cleaning up). Eventually the
3578 main interface should be through the TRACE macro, but for now,
3579 it's still accessed through vaguely CMU-CL-style functions and macros
3580 exported from the package SB-PROFILE.
3581 * Some problems left over from porting CMU CL to the new
3582 cross-compilation bootstrap process have been cleaned up:
3583 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3584 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3585 part when getting rid of the compiler *BACKEND* stuff.)
3586 ** The value of *NULL-TYPE* was screwed up, because it was
3587 being initialized before the type system knew the final
3588 definition of the 'NULL type. This screwed up several key
3589 optimizations in the compiler, causing inefficiency in all sorts
3590 of places. (I found it because I wanted to understand why
3591 GET-INTERNAL-RUN-TIME was consing.)
3592 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3593 PROCLAIM FTYPE information. Unfortunately this broke binary
3594 compatibility again, since now the forms output by DEFGENERIC
3595 to refer to functions which didn't exist in 0.6.3.
3596 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3597 can use the new (as of 0.6.3) transform for SOME into MAP into
3599 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3600 values to (INTEGER 0 1000000), so that the time code will no longer
3601 occasionally get blown up by Linux returning 1000000 microseconds
3602 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3603 its output conform to the ANSI spec. (Alas, this makes its output
3604 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3605 * A full call to MAP NIL with a single sequence argument no longer conses.
3606 * fixes to problems pointed out by Martin Atzmueller:
3607 * The manual page no longer talks about multiprocessing as though
3608 it were currently supported.
3609 * The ILISP support patches have been removed from the distribution,
3610 because as of version 5.10.1, ILISP now supports SBCL without us
3611 having to maintain patches.
3612 * added a modified version of Raymond Toy's recent CMU CL patch for
3613 EQUALP comparison of HASH-TABLE
3615 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3617 * The system still can't cross-compile itself with
3618 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3619 entails), but at least it can compile more of itself that way
3620 than it used to be able to, and various buglets which were uncovered
3621 by trying to cross-compile itself that way have now been fixed.
3622 * This release breaks binary compatibility again. This time
3623 at least I've incremented the FASL file format version to 2, so that the
3624 problem can be detected reliably instead of just causing weird errors.
3625 * various new style warnings:
3626 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3627 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3628 ** using the lexical binding of a variable named in the *FOO* style
3629 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3630 as specified by ANSI.
3631 * *RANDOM-STATE* is no longer automatically initialized from
3632 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3633 default behavior of the system is to repeat its behavior every time
3634 it's run. If you'd like to change this behavior, you can always
3635 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3636 old convention there was no comparably easy way to get the system to
3637 repeat its behavior every time it was run.
3638 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3639 FTYPE declarations has been removed, in favor of their ANSI
3640 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3641 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3642 the types of their sequence arguments can be determined at compile time.
3643 This is done through a new open code expansion for MAP which eliminates
3644 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3645 argument types can be determined at compile time.
3646 * The optimizer now transforms COERCE into an identity operation when it
3647 can prove that the coerced object is already of the correct type. (This
3648 can be a win for machine generated code, including the output of other
3649 optimization transforms, such as the MAP transform above.)
3650 * Credit information has been moved from source file headers into CREDITS.
3651 * Source file headers have been made more standard.
3652 * The CASE macro now compiles without complaining even when it has
3655 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3657 * (Note that the way that the PCL macroexpansions were rewritten
3658 to accommodate the change in DEFGENERIC below breaks binary
3659 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3660 not run under sbcl-0.6.2. Once we get out of alpha releases,
3661 i.e. hit release 1.0.0, we'll probably try to maintain binary
3662 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3663 and sbcl-1.4.4. Until then, however, it might be fairly common
3664 for maintenance releases to break binary compatibility.)
3665 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3667 * The reporting of unhandled signals has been changed to print some
3668 explanatory text as well as the report form. (Previously only
3669 the report form was printed.)
3670 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3671 it defines, so that the compiler no longer issues undefined function
3672 warnings for compiled-but-not-yet-loaded generic functions.
3673 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3674 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3675 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3676 section of the ANSI spec are supported.
3677 * The "" nickname for the "KEYWORD" package has been removed.
3678 The reader still handles symbol tokens which begin with a package marker
3679 as keywords, but it doesn't expose its mechanism for doing so in the
3680 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3681 * The system now issues STYLE-WARNINGs for contradictory TYPE
3682 proclamations. (Warnings for contradictory FTYPE proclamations would
3683 be nice too, but those can't be done usefully unless the type system
3684 is made smarter about FUNCTION types.)
3685 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3686 systematized, so that "*target-*.lisp is supposed to exist only on the
3687 target and imply that there's a related file which exists on the
3688 host, and *host-*.lisp is supposed to exist only on the host and imply
3689 that there's a related file which exists on the target. This involves a
3690 lot of renaming. Hopefully the acute confusion caused by the renaming
3691 will be justified by the reduction in chronic confusion..
3692 ** runtime-type.lisp -> early-target-type.lisp
3693 ** target-type.lisp -> late-target-type.lisp
3694 ** early-host-format.lisp -> early-format.lisp
3695 ** late-host-format.lisp -> late-format.lisp
3696 ** host-error.lisp -> misc-error.lisp
3697 ** early-error.lisp -> early-target-error.lisp
3698 ** late-error.lisp -> late-target-error.lisp
3699 ** host-defboot.lisp -> early-defboot.lisp
3700 ** code/misc.lisp -> code/target-misc.lisp
3701 ** code/host-misc.lisp -> code/misc.lisp
3702 ** code/numbers.lisp -> code/target-numbers.lisp
3703 ** code/early-numbers.lisp -> numbers.lisp
3704 ** early-host-type.lisp -> early-type.lisp
3705 ** late-host-type.lisp -> late-type.lisp
3706 ** host-typep.lisp -> typep.lisp
3707 ** load.lisp -> target-load.lisp
3708 ** host-load.lisp -> load.lisp
3709 ** host-disassem.lisp -> disassem.lisp
3710 ** host-insts.lisp -> insts.lisp
3711 ** byte-comp.lisp -> target-byte-comp.lisp
3712 ** host-byte-comp.lisp -> byte-comp.lisp
3713 ** host-signal.lisp -> signal.lisp
3714 ** host-defstruct.lisp -> defstruct.lisp
3715 ** late-target-type.lisp -> deftypes-for-target.lisp
3716 Furthermore, several other previously target-only files foo.lisp (e.g.
3717 hash-table.lisp and random.lisp) have been split into a target-and-host
3718 foo.lisp file and a target-only target-foo.lisp file, with their key type
3719 definitions in the target-and-host part, so that the cross-compiler will
3720 know more about target types.
3721 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3722 gone away. In their place are various *BACKEND-FOO* variables
3723 corresponding to the slots of the old structure.
3724 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3725 into the target SBCL has been fixed.
3726 * The chill.lisp system for loading cold code into a running SBCL
3728 * Support for the CMU CL "scavenger hook" extension has been removed.
3729 (It was undocumented and unused in the CMU CL sources that SBCL was
3730 derived from, and stale in sbcl-0.6.1.)
3731 * Various errors in the cross-compiler type system were detected
3732 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3733 (enabling various consistency checks). Many of them were fixed,
3734 but some hard problems remain, so the compiler is back to
3735 running without *TYPE-SYSTEM-INITIALIZED* for now.
3736 * As part of the cross-compiler type system cleanup, I implemented
3737 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3738 * I have started adding UNCROSS calls throughout the type system
3739 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3740 on cross-compiler input files will be able to go away, and various
3742 * CONSTANTP now returns true for quoted forms (as explicitly required
3745 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3747 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3748 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3749 (MAKE-LIST -1). In the longer term, it ought to become true
3750 that declarations are assertions even at SAFETY 1. For now, it's not
3751 quite true even at SAFETY 3, but it's at least more nearly true..
3752 (Note that this change seems to increases the size of the system by
3753 O(5%) and to decrease the speed of the compiler by 20% or more.)
3754 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3755 for the problem of printing dozens of lines of distracting information
3756 about low-level system machinery as part of the top stack frame
3757 on entry to the debugger when an undefined function was called.
3758 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3759 is not reset to COMMON-LISP-USER.
3760 * Compilation of stuff related to dyncount.lisp has been made conditional
3761 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3762 smaller. The various dyncount-related symbols have been moved into
3763 a new "SB-DYNCOUNT" package.
3764 * tty-inspect.lisp has been renamed to inspect.lisp.
3765 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3766 feature has gone away. (When we eventually port to other flavors of
3767 libc and/or Unix, we'll try to make the differences between flavors
3768 invisible at the user level.)
3769 * Various other *FEATURES* tags, and/or their associated conditionals,
3770 have been removed if obsolescent, or given better documentation, or
3771 sometimes given more-mnemonic names.
3773 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3775 * tidied up "make.sh" script
3776 * tidied up system directory structure
3777 * better "clean.sh" behavior
3778 * added doc/FOR-CMUCL-DEVELOPERS
3779 * many many small tweaks to output format, e.g. removing possibly-confusing
3780 trailing #\. character in DESCRIBE-INSTANCE
3781 * (EQUALP #\A 'A) no longer signals an error.
3782 * new hashing code, including EQUALP hashing
3783 * tidied up Lisp initialization and toplevel
3784 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3785 * command line argument processing
3786 * added POSIX-GETENV function to deal with Unix-ish environment variables
3787 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3788 terminating SBCL on EOF
3789 * non-verbose GC by default
3790 * There is no more "sbcl" shell script; the sbcl file is now the C
3791 runtime executable (just like CMU CL).
3792 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3794 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3795 symbol and package information as Lisp native symbol and package objects
3796 instead of strings naming symbols and strings naming packages. This way,
3797 whenever packages are renamed (as in warm init), debug information is
3798 transformed along with everything else.
3799 * tweaked the optimization policy declarations which control the building
3800 of SBCL itself. Now, among other things, the system no longer saves
3801 source location debugging information. (This helps two problems at once
3802 by reducing SBCL size and by keeping SBCL from trying to look for its
3803 sources -- which may not exist -- when reporting errors.)
3804 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3805 debugging and testing purposes
3806 * cleaned up printing, making the printer call PRINT-OBJECT for
3807 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3808 methods, giving nearly-ANSI behavior
3809 * converted almost all special variables to use *FOO* naming convention
3810 * deleted PARSE-TIME functionality, since it can be done portably
3811 * moved some files out of cold init into warm init
3812 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3814 * regularized formatting of source files
3815 * added an install.sh script
3816 * fixed ridiculous memory usage of cross-compiler by making
3817 compiler/alloc.lisp not try to do pooling unless it can hook
3818 itself into the GC of the cross-compilation host. Now the system
3819 builds nicely on my old laptop.
3820 * added :SB-ALLOC in target-features.lisp-expr
3821 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3822 was not implemented)
3823 * re-did condition handling and note reporting in the compiler. Notes
3824 are no longer handled by signalling conditions. Style warnings
3825 and warnings are handled more correctly and reported in such a way
3826 that it's easy to find one or the other in your output (so that you
3827 can e.g. figure out which of many problems caused COMPILE-FILE to
3829 * changed the severity of several compiler warnings from full WARNING
3830 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3831 compiler note reporting so that it doesn't use the condition system
3832 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3833 COMPILE-FILE command)
3834 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3835 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3836 no longer supported, since their implementation was deeply intertwingled
3837 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3838 * removed bogus "support" for compiler macros named (SETF FOO), and
3839 removed the compiler macro for SETF INFO (but only after making a fool
3840 of myself on the cmucl-imp mailing list by posting a bogus patch for
3841 DEFINE-COMPILER-MACRO..)
3842 * Compiled files containing forms which have side effects on the Lisp
3843 reader (such as DEFPACKAGE forms) are now handled more correctly.
3844 (Compiler queuing of top level lambdas has been suppressed by setting
3845 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3846 * deleted various currently-unused source files, e.g. gengc.lisp. They
3847 may be added back at some point e.g. when porting to other architectures,
3848 but until they are it's distracting to distribute them and to try to
3850 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3851 there were so many of them they're just distractions, and UNCROSS is
3852 known to be able to handle the current sources
3853 * moved PROFILE functionality into TRACE, so that it will be clear
3854 how the wrapping and unwrapping of functions when you profile them
3855 interacts with the wrapping and unwrapping of functions when you
3856 trace them. (Actually, the functionality isn't there yet, but at least
3857 the interface specification is there. Hopefully, the functionality will
3858 arrive with some future maintenance release.)
3859 * removed host-oops.lisp
3860 * changed signature of QUIT function to allow UNIX-CODE argument
3861 * fixed READ-SEQUENCE bug
3862 * tweaked verbose GC output so that it looks more like the progress
3863 output that ANSI specifies for functions like LOAD
3864 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3865 * added <http://sbcl.sourceforge.com> to the banner information printed by