1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
3 * feature: thread support on Solaris/x86, and experimental thread support
5 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
7 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
8 default method for SLOT-UNBOUND.
9 * minor incompatible change: prevent the user from specializing the
10 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
11 somewhat counter to the intent of the protocol, I (CSR) think, and
12 additionally it just doesn't work in SBCL as currently
13 implemented, thanks to optimizations (that are always valid for
14 the other three SLOT-VALUEish functions, but not for the setter).
15 * minor incompatible change: the :SB-LDB feature is now enabled by
16 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
17 the low-level debugger.
18 * bug fix: class objects can be used as specializers in methods.
19 (reported by Pascal Costanza)
20 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
21 with a type error. (reported by blitz_ on #lisp)
22 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
23 failed with a type error. (reported by Pascal Bourguignon)
24 * bug fix: merging pathnames against defaults with :DIRECTORY
25 starting with '(:RELATIVE :BACK) should preserve the :BACK.
26 (reported by James Y Knight)
27 * improved SB-BSD-SOCKETS support on Windows. (thanks to Timothy
29 * bug fix: saving large (>2GB) cores on x86-64 now works
30 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
31 constant index and a (simple-array (signed-byte 32)) array
32 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
33 error (patch by Robert J. Macomber)
34 * feature: TIME now displays the amount of run-time spent in GC
35 * fixed some bugs revealed by Paul Dietz' test suite:
36 ** MISC.641: LET-conversion were not supposed to work in late
38 * bug fix: The debugger now does a better job of respecting
39 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
40 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
41 workaround for bug 403.)
43 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
44 * new feature: source path information is generated for macro-expansion
45 errors for use in IDE's like Slime (thanks to Helmut Eller)
46 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
47 * bug fix: compiler does not loop forever on an invalid type in
49 * improvement: compilation of most CLOS applications is significantly
51 * optimization: added a limited bytecode compiler for simple toplevel
52 forms, speeding up compilation and FASL loading
54 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
55 * minor incompatible change: in sbcl-0.9.11 (but not earlier
56 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
57 into subclasses of the finalized class. Now user calls to
58 FINALIZE-INHERITANCE finalize just the one class, and calls by the
59 system return before any subclasses are finalized.
60 * minor incompatible change: The reader no longer ignores errors
61 regarding non-existent packages in #+ and #- feature tests.
62 * new feature: command line options --no-sysinit, --no-userinit to
63 inhibit loading the corresponding init files
64 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
65 for sending data through UDP sockets (thanks to François-René Rideau)
66 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
67 error is signalled instead (thanks to François-René Rideau)
68 * minor incompatible change: Error signalling behaviour of lexical
69 operations violating package locks has changed slightly. Refer to
70 documentation on package locks for details.
71 * enhancement: EVAL can process IF-expressions without resorting to the
73 * bug fix: Some operations involving SIN, COS, or TAN weren't being
74 constant-folded properly due to missing out-of-line functions.
75 (reported by Mika Pihlajamäki)
76 * bug fix: LISTEN sometimes returned T even in cases where no data was
77 immediately available from the stream
78 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
79 were reversed. (reported by Levente Mészáros)
80 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
81 when given a vector displaced to an adjustable array. (reported
83 * bug fix: derivation of float boundaries from numbers outside the
84 appropriate float range (reported by John Wiseman)
85 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
87 * bug fix: precomputing cache entries for generic functions with
88 some subclasses of specializers as yet invalid does not attempt to
89 fill a cache line with a negative offset. (reported by Levente
91 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
92 allow condition class objects as arguments to DOCUMENTATION and
93 (SETF DOCUMENTATION); only find and set documentation for
94 structure names for the STRUCTURE doc-type. (suggested by Gary
96 * improvements to the Win32/x86 port:
97 ** (user-homedir-pathname) and default initialization file
98 locations now know about the user's "Documents and Settings"
99 directory (thanks to Yaroslav Kavenchuk)
100 ** run-program is implemented (thanks to Mike Thomas)
101 ** sockets support (thanks to Timothy Ritchey)
102 ** better backtrace support (thanks to Alastair Bridgewater)
103 ** sb-grovel supported
104 ** asdf-install and sb-posix work somewhat
105 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
106 * improvements to the Solaris/x86 port:
107 ** works on Solaris 11/Solaris Express
108 ** floating-point exception handling support
109 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
110 * fixed some bugs revealed by Paul Dietz' test suite:
111 ** REMOVE-METHOD returns its generic function argument even when
112 the method is not one of the generic functions' methods.
113 ** objects declared as MEMBER types can be admissible arguments to
115 ** printing characters should simply be printed by the FORMAT ~:C
117 ** compiler failure when compiling functions with hairy constant
118 defaults for optional parameters.
119 ** compiler produces wrong code when MAYBE-INLINE-expanding a
120 function, which is already optimized.
122 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
123 * new platform: experimental support for SBCL x86/Darwin, including
124 MacOS X 10.4.5 on Intel.
125 * new feature: Unicode character names are now known to the system
126 (through CHAR-NAME and NAME-CHAR).
127 * new feature: the filesystem location of SBCL's core file is
128 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
129 * minor incompatible change: the contrib modules SB-POSIX and
130 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
131 this change is to make it easier to distribute
132 location-independent binaries.
133 * bug fix: as implied by AMOP, standardized classes no longer have
134 slots named by external symbols of public packages. (reported by
136 * optimization: calling functions via constant symbols -- as in
137 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
138 via the function object as in (FUNCALL #'FOO).
139 * optimization: on x86 and x86-64, the calling convention for the
140 case of dealing with an unknown number of values has been altered
141 to be friendlier to the prediction heuristics implemented,
142 particularly with reference to CALL and RET pairing. (thanks to
143 Alastair Bridgewater)
144 * optimization: on x86, the code for access to thread-local symbol
145 values and binding/unbinding of thread-local symbols is smaller.
146 (thanks to Alastair Bridgewater)
147 * enhancement: CONSTANTP is now able to determine constantness of
148 more complex forms, including calls to constant-foldable standardized
149 functions and some special forms beyond QUOTE.
150 * fixed bug: occasional GC crashes on Solaris/x86
151 * optimization: x86-64 supports stack allocation of results of simple
152 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
153 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
154 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
155 (thanks to James Knight)
156 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
157 by the standard (thanks to Stephen Compall)
159 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
160 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
161 be used for bundling the runtime and the core file into one
162 executable binary. This feature is not currently supported on all SBCL
163 platforms. (thanks to James Bielman and NIIMI Satoshi)
164 * new feature: a generational or ephemeral garbage collector is now
165 the default on the PowerPC platform (both Linux and Darwin). The
166 old Cheney (stop and copy) collector is a build-time option.
167 (thanks to Cyrus Harmon, after Raymond Toy)
168 * minor incompatible change: the method by which SBCL finds its
169 contributed modules has changed; it no longer relies on symbolic
170 links from an $SBCL_HOME/systems directory, but searches directly
171 in the subdirectories of $SBCL_HOME.
172 * enhancement: the dynamic heap size on the Linux/PPC platform is
173 markedly larger, even using the older Cheney garbage collector.
174 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
175 certain complicated string types. (reported by Gary King)
176 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
177 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
178 * fixed bug: DOCUMENTATION on structures no longer signals an
179 error if no structure type of the right name exists. (reported by
181 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
182 applicable non-standard primary or :AROUND method on
183 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
184 no longer cause unbound variable errors. (reported by Kevin Reid)
185 * fixed bug: metacircle resolution in cases where methods have slots
186 added before the slots from STANDARD-METHOD. (reported by Jean
188 * fixed bug: the Power PC assembly code for calling into lisp
189 sometimes computed its return address wrongly (depending on the
190 15th bit of the address, fixed at link time). This used to
191 manifest itself in a segmentation violation while building PCL.
192 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
193 many others over the years)
194 * fixed bug: ROOM no longer reports silly numbers for stack usage if
195 the stack pointer (treated as a signed integer) is negative.
196 (thanks to Peter van Eynde)
198 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
199 * new platform: experimental support for the Windows operating
200 system has been added. (thanks to Alastair Bridgewater)
201 * fixed several bugs in and robustified the PPC FFI (including
202 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
203 * bug fix: allow non-simple string symbol names (reported by Paul
205 * bug fix: interrupt handling on NetBSD (thanks to Richard M
207 * bug fix: saving a core corrupted callbacks on x86/x86-64
208 * bug fix: closed a loophole in metacircularity detection and
209 grounding in the PCL implementation of CLOS.
210 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
211 (reported by tomppa on #lisp)
212 * bug fix: clear the direction flag on Lisp -> C transitions, as
213 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
214 (reported by Andrej Grozin and Hendrik Maryns)
215 * optimization: major improvements to GC efficiency on GENCGC platforms
216 * optimization: faster implementation of EQUAL
217 * optimization: emit more efficient opcodes for some common
218 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
219 * optimization: several other minor code-generation improvements on x86-64
220 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
222 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
223 * minor incompatible change: (SETF CLASS-NAME) and (SETF
224 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
225 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
226 by ANSI as a generic function, and for consistency (SETF
227 GENERIC-FUNCTION-NAME) is treated likewise.
228 * fixed bug #233.b: make constraint propagation notice when a variable
229 value is changed after it is referenced but before it is used
230 * fixed bug #296: no more arbitrary behaviour from filenames with
231 odd characters as --load arguments. (reported by Adam Warner)
232 * fixed bug #390: :CHARACTER-SET pathname components now work as
233 expected. (reported by Tim Daly Jr)
234 * fixed bug #391: complicated :TYPE intersections in slot
235 definitions no longer cause an error in PCL internals.
236 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
237 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
238 returning the number of octets which would be written to the
239 file-stream. (thanks to Robert J. Macomber)
240 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
241 arguments to the internal stream functions. (thanks to David
243 * bug fix: stack exhaustion is now handled on the x86/SunOS
244 platform. (thanks to Daisuke Homma)
245 * bug fix: more accurate ROOM results on GENCGC platforms
246 * optimization: improved type inference for arithmetic-for
247 index variables in LOOP
248 * optimization: faster floating-point SQRT on x86-64
249 * fixed some bugs revealed by Paul Dietz' test suite:
250 ** DOCUMENTATION returns NIL instead of "" for method combinations
251 that don't have a docstring
253 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
254 * minor incompatible change: (SETF CLASS-NAME) and (SETF
255 GENERIC-FUNCTION-NAME) are no longer generic functions, and
256 therefore are not customizeable by user code (as seems to be at
257 least permitted and maybe required by AMOP). As a consolation,
258 however, the SBCL implementation of these functions now calls
259 REINITIALIZE-INSTANCE as specified by AMOP.
260 * bug fix: slot-definition documentation is propagated as per ANSI
261 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
262 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
263 argument, as do eslotd initialization methods. (from Pascal
264 Costanza's "Closer" project)
265 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
266 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
268 * bug fix: it is now possible to have more than one subclass of
269 STANDARD-GENERIC-FUNCTION without causing stack overflow.
270 (reported by Bruno Haible, Pascal Costanza and others)
271 * bug fix: the dependent update protocol now works for generic
272 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
274 * bug fix: condition-class instances corresponding to
275 DEFINE-CONDITION forms are now created eagerly. (reported by
276 Kalle Olavi Niemitalo on comp.lang.lisp)
277 * bug fix: floating point printing is more accurate in some
278 circumstances. (thanks to Simon Alexander)
279 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
280 merged with *DEFAULT-PATHNAME-DEFAULTS*.
281 * bug fix: callbacks on OS X now preserve stack-alignment.
282 (thanks to Cyrus Harmon)
283 * enhancement: the x86-64 disassembler is much better at
284 disassembling SSE instructions. (thanks to Lutz Euler)
285 * enhancement: CHECK-TYPE on a variable now allows type-inference
286 (thanks to Vincent Arkesteijn)
287 * optimization: improved performance of EUC-JP external format.
288 (thanks to NIIMI Satoshi)
289 * optimization: performance improvements to IO on file streams of
290 :ELEMENT-TYPE CHARACTER
291 * optimization: much faster memory allocation on x86-64
292 * optimization: faster garbage collections (latency and throughput)
294 * optimization: faster bignum subtraction and division on x86 and x86-64
295 (thanks to Lutz Euler)
296 * optimization: more accurate type-inference for loops that use a
297 floating point index variable or a negative step.
299 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
300 * bug fix: add a workaround to SBCL looping infinitely at startup on
301 Linux kernels with apparently buggy implementations of personality().
302 (thanks to Svein Ove Aas)
303 * bug fix: Unicode symbols are correctly printed in LDB backtraces
304 (thanks to David Lichteblau)
305 * bug fix: local bindings shadow global symbol macros for
306 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
307 * optimization: non-open coded uses of numeric comparison operators
308 (e.g. >) no longer cons when called with more than one parameter
309 on platforms supporting dynamic-extent allocation.
310 * enhancement: saving cores with foreign code loaded is now supported
311 on MIPS/Linux in addition to the previously supported platforms.
312 * bug fix: FIND-RESTART now tests for activity, not applicability when given
313 a restart object as identifier. (reported by Helmut Eller for CMUCL)
314 * bug fix: division by zero in sb-sprof when no samples were collected
315 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
316 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
317 (thanks to Alexander Kjeldaas)
318 * new feature: ignoring the return values of destructive functions
319 like NREVERSE signals a compile-time style-warning.
320 (thanks to Kevin Reid)
321 * new feature: the alignment of alien structure fields can be
322 explicitly specified. (thanks to Cyrus Harmon)
323 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
324 and dump core on SIGQUIT
326 ** incompatible change: threads do not inherit values of specials
327 from their parents (see manual)
328 ** bug fix: threads stacks belonging to dead threads are freed by the
329 next exiting thread, no need to gc to collect thread stacks anymore
330 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
331 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
332 ** bug fix: dynamic variable and thread start related gc lossage
333 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
335 * fixed some bugs revealed by Paul Dietz' test suite:
336 ** SUBTYPEP is slightly more accurate on heinously complicated
337 CONS types where some of the members have uncertain (in the
338 NIL, NIL sense) type relationships to each other.
340 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
341 no longer purified unless :PURIFY T is explicitly specified.
342 ** Non-purified cores are significantly smaller than before
344 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
345 * new feature: timers based on Zach Beane's excellent timer package
346 * added support for the following external formats: koi8-u,
347 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
348 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
349 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
350 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
351 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
352 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
353 * incompatible change: a threaded SBCL will no longer revert to
354 non-threaded mode on non-NPTL systems, but refuse to start entirely.
355 * bug fix: interrupts are disabled until startup is complete; no
356 more sigsegvs when receiving a signal to soon
357 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
359 * bug fix: add a workaround for the memory randomization features in
360 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
361 workaround will only be in effect on systems with the proc filesystem
363 * bug fix: printing objects of type HASH-TABLE signals a
364 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
366 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
367 have been running for over 50 days. (reported by Gilbert Baumann)
368 * bug fix: the logic for getting names of functions gets less
369 confused when confronded with alternate-metaclass
370 funcallable-instances. (reported by Cyrus Harmon)
371 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
372 consistent, even on internal alternate-metaclass objects.
373 * bug fix: flush closure information collected by physical
374 environment analysis prepass before the main pass. (bug reported
376 * bug fix: compiler pack phase does not modify a hashtable, which is
377 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
378 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
379 may be expanded. (reported by Alexander <malishev> on c.l.l)
380 * bug fix: no more style-warnings when compiling code using LAST
381 under high-SPEED low-SPACE settings. (reported by David Wallin
383 * fixed some incompatibilities between SBCL's MOP and the MOP
385 ** the METAOBJECT class is now implemented;
386 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
387 STANDARD-OBJECT, as required;
388 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
389 now compatible (as required by VALIDATE-SUPERCLASS); there
390 remains a consistency requirement over the presence or absence
391 of the FUNCTION class in the superclass list of finalized
392 classes; see the manual for more details;
393 ** the :AROUND method for COMPUTE-SLOTS on
394 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
395 requested slot ordering.
397 ** bug fix: parent thread now can be gc'ed even with a live
399 ** bug fix: binding a special with PROGV to no value is not
400 the same as that symbol not having been bound (thanks to
402 ** bug fix: binding specials is thread safe (thanks to
404 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
405 and SB-SPROF do not die with 'no handler for signal XX in
406 interrupt_handle_now(..)' anymore
407 ** bug fix: WITH-TIMEOUT works with multiple running threads
408 * fixed some bugs revealed by Paul Dietz' test suite:
409 ** ENSURE-GENERIC-FUNCTION should take a method class object for
410 the :method-class keyword argument.
412 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
413 * new port: the Solaris operating system on x86 processors is now
414 mostly supported, though some rough edges in the environment
415 remain. (thanks to Daisuke Homma)
416 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
417 space for its heap. (thanks to Thiemo Seufer)
418 * optimization: SBCL on MIPS platforms now supports dynamic-extent
419 closures. (thanks to Thiemo Seufer)
420 * minor incompatible change: eof selects abort in the debugger.
421 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
422 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
424 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
425 deprecated, and will go away in a future revision of SBCL.
426 * minor incompatible change: GC-ON and GC-OFF are no longer
427 implemented with a counter, it does not matter how many times gc
428 is switched on or off
429 * bug fix: discriminating functions for generic function classes
430 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
431 make invalid assumptions about method precedence order. (reported
433 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
434 platforms. (thanks to Thiemo Seufer)
435 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
436 * bug fix: correct pathname printing with printer escaping is on.
437 (thanks to Kevin Reid)
438 * bug fix: complex VOP definitions in "user-space" no longer trigger
439 package locks. (reported by Zach Beane)
440 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
441 for funcallable-instance functions, and is no different from
443 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
444 characters in the current readtable. (reported by Nicholas Neuss)
445 * bug fix: SUBTYPEP on various CONS types returns more a more
446 accurate acknowledgment of its certainty.
447 * optimizations: REMOVE-DUPLICATES now runs in linear time on
448 lists in some cases. This partially fixes bug 384.
449 * flush all standard streams before prompting in the REPL and the
451 * bug fix: signal handling and triggering gc do not conflict
452 directly anymore, in particular a high frequency sb-sprof does
453 not prevent gc from running
454 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
455 approximation for timezone and DST information between the
456 universal time epoch and the smallest negative 32-bit time_t.
457 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
458 year 1899 so long as the encoded time is non-negative.
459 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
460 the correct answer for non-constant rotate amounts when performing
461 an inline 32-bit rotation.
463 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
464 there is only one thread in the session
465 ** bug fix: memory leak for streams created in one thread and
466 written to in another
467 ** bug fix: lockup when compiled with gcc4
468 ** bug fix: race that allows the gc to be triggered when gc is
470 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
471 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
473 ** bug fix: finished threads are gc'ed properly
474 * fixed some bugs revealed by Paul Dietz' test suite:
475 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
476 has arguments with a different set of applicable methods from
477 the orignal arguments.
478 ** The type error thrown by MAP now has a correct expected-type
480 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
481 name a compiled function.
482 ** Three MISC tests where a large bignum was improperly coerced to
483 a float that couldn't represent that bignum during type
484 derivation were fixed.
485 ** SUBTYPEP can now handle types involving the negation of a
486 list-form FUNCTION type.
487 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
488 as (COMPLEX (AND RATIO (NOT FIXNUM))).
489 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
491 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
492 * New feature: Experimental support for bivalent streams: streams
493 opened with :element-type :default now allow character and binary
494 (unsigned-byte 8) I/O
495 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
496 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
498 * bug fix: no more highly sporadic "couldn't check whether ~S is
499 readable" when reading a stream and an interrupt hits in the middle
500 of a select system call
501 * compiler better recognizes complex arrays (reported by Eduardo
503 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
504 for variables on SBCL built with linkage-tables. (reported by Luis
506 * various error reporting improvements.
507 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
508 (Thanks to Thiemo Seufer)
509 * bug fix: nested reader invokations work correctly
510 * bug fix: it is possible to have simultaneous references to foreign
511 code and foreign data with the same name.
513 ** added x86-64 support
514 ** incompatible change: the threading api now works with thread
515 objects instead of thread ids
516 ** bug fix: threads are protected from signals and interruption when
517 starting up or going down
518 ** bug fix: a race where an exiting thread could lose its stack to gc
519 ** bug fix: don't halt on infinite error in threads if possible
520 ** fixed numerous gc deadlocks introduced in the pthread merge
521 ** bug fix: fixed thread safety issues in read and print
522 ** bug fix: debugger doesn't hang on session lock if interrupted at
523 an inappropriate moment
524 ** bug fix: run-program is now thread safe(r)
525 ** bug fix: inner with-recursive-lock no longer releases the mutex
526 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
527 * fixed some bugs revealed by Paul Dietz' test suite:
528 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
529 EXPECTED-TYPE slots filled.
530 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
532 ** MAKE-CONDITION accepts classes as type-designators.
533 ** COMPILE may never return NIL.
534 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
535 range before calling Unix time functions
537 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
538 * numerous signal handling fixes to increase stability
539 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
540 * minor incompatible change: we now correctly canonize default
541 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
542 as per the MOP, rather than the historical (INITARG INITFUNCTION
543 INITFORM). (reported by Bruno Haible)
544 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
545 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
546 for more information.
547 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
548 pathname is a directory pathname.
549 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
550 * dynamic space size on PPC has been increased to 768Mb. (thanks to
552 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
553 :METACLASS argument in addition to a class name. (reported by
554 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
555 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
556 (reported by Bruno Haible; patch from Gerd Moellmann)
557 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
559 * bug fix: more cleanups to the floating point exception handling on
560 x86-64 (thanks to James Knight)
561 * bug fix: the compiler does not try to constant fold calls of
562 COERCE and BIT-* functions when they return freshly constructed
563 objects. (reported by Nikodemus Siivola and Paul Dietz)
564 * optimization: improved the MIPS versions of generic (in the
565 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
566 * optimization: direct conversion of (unsigned-byte 32) to floats on
567 the PowerPC platform.
568 * optimization: structure instances with raw slots now use less
569 memory, and probably show better memory locality. (thanks to
571 * optimization: DYNAMIC-EXTENT declarations for lists and closures
572 are treated as requests for stack allocation on the x86-64,
573 Alpha-32, PPC and SPARC platforms.
574 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
575 the wrong file descriptor; implementation of SOCKET-OPEN-P.
576 (thanks to Tony Martinez)
578 ** gcing a dead thread can no longer lead to lockups
579 ** threads block signals until they are set up properly
580 ** errno is no longer shared by threads
581 ** interrupt-thread restores the eflags register on x86
582 ** fixed some lockups due to gc/thread interaction
583 * fixed some bugs revealed by Paul Dietz' test suite:
584 ** invalid dotted lists no longer raise a read error when
586 ** signal an error if a symbol that names a declaration is used
587 as the name of a type, or vice versa
588 ** allow using the (declare (typespec var*)) abbreviation for
589 (declare (type typespec var*)) with all type specifiers
590 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
591 ** always return NIL from PPRINT-POP when OBJECT is NIL
592 ** don't signal errors when pretty-printing malformed LABELS,
593 FLET or MACROLET forms
594 ** declarations in a DOLIST body are also in scope for the
596 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
598 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
601 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
602 * fixed cross-compiler leakages that prevented building a 32-bit
603 target with a 64-bit host compiler.
604 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
605 opened with :IF-EXISTS :OVERWRITE.
606 * fixed bug 281: error for an invalid qualifier in a short-form method
607 combination method is not signalled until the faulty method is called.
608 * bug fix: iteration variable type inferrer failed to deal with open
609 intervals. (reported by Alan Shields)
610 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
611 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
612 or more runtime options were provided to the sbcl binary.
613 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
614 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
615 * optimization: there's now a fast-path for fixnum arguments in the
616 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
617 * optimization: the code generated on x86-64 is more compact thanks
618 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
619 * bug fix: floating-point exception handling now partly works on
620 x86-64. (Thanks to James Knight)
621 * improvement to the MIPS backend from Thiemo Seufer: C-style
622 64-bit long long arguments and return values to alien functions
624 * fixed some bugs revealed by Paul Dietz' test suite:
625 ** the type-error signalled from WARN has a filled-in DATUM slot.
626 ** the type-error required when a stream is not associated with
627 a file has the stream as its datum.
628 ** type-errors on single-floats on x86-64 no longer have
629 :INVALID-OBJECT as the datum
630 ** the type-errors signalled for invalid function names now have
631 a correct expected type
632 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
633 for structures defined with a :TYPE. Documentation strings for
634 typed structures are no longer immediately discarded
635 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
636 broadcast streams and synonym streams. FILE-LENGTH now also works
637 on broadcast streams.
639 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
640 * incompatible change: the --noprogrammer option, deprecated since
641 version 0.7.5, has been removed. Please use the equivalent
642 --disable-debugger option instead.
643 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
645 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
646 inoperational for a while now) has been completely removed.
647 * null lexical environments are now printed as #<NULL-LEXENV>,
648 significantly reducing the amount of clutter in typical backtraces.
649 * documentation on weak pointers, finalization, and after GC hooks
650 has been added to the manual.
651 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
652 as other specialized array types, is much faster. SUBSEQ and
653 COPY-SEQ on such arrays have also been sped up.
654 * optimization: EQL is now more efficient when at least other argument
655 is known to be of type (OR FIXNUM (NOT NUMBER)).
656 * fixed bug: the runtime is now less vulnerable to changes in the
657 size of the SBCL object on OS X, and virtual memory is reserved for
658 all spaces that need to be at a fixed address.
659 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
660 * fixed bug: finalizers and after GC hooks that cause consing are now
662 * fixed bug: compiler error messages and summaries are now printed to
663 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
664 * fixed inference of the upper bound of an iteration variable.
665 (reported by Rajat Datta).
666 * fixed bug 211e: calling local functions with duplicated constant
667 keyword argument no longer causes a bogus style warning about an
669 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
670 ftype declaration to be disregarded. (reported by Dave Roberts)
671 * fixed bug 373: caused by erronous compilation of references to alien
672 variables in the runtime on ppc/darwin.
673 * fixed bug 376: CONJUGATE type deriver.
674 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
675 (reported by Baughn on #lisp)
676 * a cross-compiler bug on non-x86 platforms has been identified and
677 fixed. (thanks to Bruno Haible)
678 * improvements to the MIPS runtime code for increased stability.
679 (thanks to Thiemo Seufer)
680 * increased the maximimum compact environment size to allow
681 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
682 * partial workaround for bug 135: don't name the function we're
683 calling for hairy cases of EVAL, so as not to accumulate one environment
684 entry per call to EVAL. (reported by Kevin Reid)
685 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
686 * optimization: type testing for non-vector arrays should be faster.
687 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
689 * bug fix: setting 31st element of a bit vector to zero did not work
691 * bug fix: redefining a class definition which failed due to a
692 previous accessor / function clash now works (but see BUGS entry
693 #380 for more problems in this area). (thanks to Zach Beane)
694 * the long form of DEFINE-METHOD-COMBINATION disables method group
695 checking when given a single method group with pattern *. (thanks
697 * on x86 compiler supports stack allocation of results of simple
698 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
699 * support for building and running on Mac OS X 10.4 "Tiger" has been added
700 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
701 * fixed some bugs related to Unicode integration:
702 ** the restarts for recovering from input and output encoding
703 errors only appear when there is in fact such an error to
705 * fixed some bugs revealed by Paul Dietz' test suite:
706 ** MISC.549 and similar: late transformation of unsafe type
707 assertions into derived types caused unexpected code
709 ** SCALE-FLOAT type deriver is less wrong.
710 ** type derivers for EXP, LOG and similar functions compute result
711 types for complex arguments better.
712 ** (MISC.563) CONJUGATE type deriver works for very restricted
714 ** out-of-line type testers for character strings are available.
715 ** EQUAL compiler transform understands specialness of objects
717 ** accessing double-floats stored on the stack now works on x86-64.
718 ** debugger internals could sometimes create invalid lispobjs,
719 resulting in GC crashes.
720 ** MISC.548: type check weakening can convert required type into
722 ** initialization forms for bindings are not in scope of free special
725 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
726 * incompatible change: thread support for non-NPTL systems has
727 been removed - locking is buggy and unreliable. A threaded
728 SBCL build will now warn at startup and refuse to create
729 new threads, unless futex support is detected in the kernel
730 * incompatible change: the top level REPL now has only an ABORT
731 restart associated with it, not TOPLEVEL and ABORT as it used to.
732 TOP and TOPLEVEL are now available as debugger commands for
733 returning to the top level.
734 * incompatible change: forms evaluated in the REPL now use the
735 global optimization policy.
736 * incompatible change: user- and system-initialization files are
737 no longer processed with LOAD, but by READ and EVAL; hence the
738 global optimization policy, startup package, readtable, etc,
740 * The .fasl file format number has been incremented because of
741 various incompatible changes.
742 * internal entry point details and argument counts no longer appear
743 in backtraces unless explicitly requested by setting
744 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
745 * built-in and standard functions no longer have names like "top
746 level local call to FOO".
747 * fixed bug 32: functions defined in non-null lexical environments
748 now have more legible printed representation
749 * fixed bug 33: functions defined in non-null lexical environemnts
750 are now more amenable to inspection by INSPECT.
751 * workaround for bug 354: XEPs no longer appear in backtraces unless
752 explicitly requested.
753 * fixed bug: receiving the signal which results from attempting to
754 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
755 SIGBUS on other *BSDs) on architectures where the C stack is also
756 the Lisp stack (x86 and x86-64) from foreign code no longer leads
757 to debugger confusion or wild instability. (reported by Cheuksan
759 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
760 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
761 (reported by Lutz Euler)
762 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
763 compiled code. (reported by Paul Dietz)
764 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
765 specialized parameter to a method to something that is not TYPEP
766 the specializer is now possible.
767 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
768 face of package deletion.
769 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
770 pathname. (reported by David Tolpin on c.l.l)
771 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
772 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
773 STRING-STREAM and FILE-STREAM, respectively.
774 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
775 than previously; in addition, its test suite is now run on build.
776 (thanks to Luke Gorrie)
777 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
778 * optimization: added a immediate representation for single-floats
780 * fixed some bugs revealed by Paul Dietz' test suite:
781 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
782 ** attempting to create a package with a colliding nickname causes
783 correctable errors to be signalled.
784 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
785 ** several x86-64 backend bugs related to sign-extension of immediate
788 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
789 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
790 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
792 * fixed loading of multiply forward-referenced layouts.
793 (thanks to Cheuksan Wang)
794 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
795 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
796 (see COMPILE-FILE documentation for details of :PRINT option)
797 * fixed bugs 19 and 317: fixed-format floating point printing is
798 more accurate. This also fixes a bug reported by Adam Warner
799 related to the ~@F format directive.
800 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
802 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
803 dispatch table if the from-char is a dispatch macro character.
804 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
805 by the wordsize no longer ignore the last word. (reported by Lutz
807 * fixed bug in type checking of dynamic-extent variables. (reported
809 * optimization: sequence traversal functions use their freedom to
810 coerce function designators to functions.
811 * optimization: code with many calls to CLOS methods specialized on
812 CLOS classes has had redundant type checks removed.
813 * optimization: added declarations to speed up operations that access
814 the internal character database (for example STRING-UPCASE)
815 * optimization: comparison operations between floats and sufficiently small
816 fixnums no longer create extra rationals
817 * fixed some bugs related to Unicode integration:
818 ** portions of multibyte characters at the end of buffers for
819 character-based file input are correctly transferred to the
820 start of the buffer at the next read.
821 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
822 passing it through to OPEN.
823 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
824 argument given to internal calls to OPEN.
825 ** the built-in comment readers (introduced by character sequences
826 ";" and "#|") are more forgiving to encoding errors; they will
827 STYLE-WARN and then attempt to resync the stream at a character
828 boundary. (thanks to Teemu Kalvas)
829 * fixed some bugs in the x86-64 port:
830 ** Negative short int return values from c-calls are sign-extended
832 ** The stack is aligned to 16-bytes for c-calls, as required by
833 the ABI. (thanks to Cheuksan Wang)
834 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
835 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
836 for enums. (thanks to Vincent Arkesteijn)
837 ** Multiple small optimizations and bugfixes for floating point
839 * fixed some bugs revealed by Paul Dietz' test suite:
840 ** Space, Tab, Linefeed, Return and Page have the invalid
841 secondary constituent character trait.
842 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
844 ** WITH-INPUT-FROM-STRING should only update the index place on
846 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
848 ** Bit-array operations (BIT-AND and similar) worked incorrectly
849 with one-dimensional arrays with fill pointers.
850 ** TYPE-OF failed on a complex with an integer realpart and a
852 ** compiler failure during type inference for the code of form
853 (IF (EQL X (THE ...)) ...) (MISC.535).
855 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
856 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
857 platform. The port supports 61-bit fixnums, large memory spaces
858 and reloading shared object files.
859 * enhancement: saving cores with foreign code loaded is now
860 supported on ppc/Darwin in addition to the previously supported
862 * enhancement: the statistical profiler now walks deeper into the
863 call stack for more meaningful call-graphs and accrued time
864 reports (x86/x86-64 only). It also now reports time spent in
866 * enhancement: it is now possible to trace most individual methods
867 of a generic function in addition to tracing the generic function
869 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
871 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
872 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
873 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
874 produces an error. (thanks to Vincent Arkesteijn)
875 * bug fix: NAMESTRING on pathnames with :WILD components in their
876 directories works correctly. (thanks to Artem V. Andreev)
877 * fixed bug 125: compiler preserves identity of closures. (reported
879 * bug fixed: functions with &REST arguments sometimes failed with
880 "Undefined function" when compiled with (DEBUG 3). (reported by
882 * bug fix: overflow during compiling of setting element of a bit
883 vector with constant index and value. (reported by Timmy Douglas)
884 * build fix: fixed the dependence on *LOAD-PATHNAME* and
885 *COMPILE-FILE-PATHNAME* being absolute pathnames.
886 * on x86 compiler partially supports stack allocation of dynamic-extent
888 * GO and RETURN-FROM do not check the extent of their exit points
889 when compiled with SAFETY 0.
890 * fixed some bugs related to Unicode integration:
891 ** encoding and decoding errors are now much more robustly
892 handled; it should now be possible to recover even from invalid
893 input or output to the terminal. (thanks to Teemu Kalvas)
894 ** provided a first cut at implementing STRING-TO-OCTETS and
895 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
896 ** altered the SB-MD5 contributed module slightly, changing the
897 interface just enough for it to be supportable for builds where
898 lisp characters are not eight bits.
899 * fixed some bugs revealed by Paul Dietz' test suite:
900 ** the FORMATTER-generated functions for ~V[ conditionals require
901 the correct number of arguments.
902 ** READ-FROM-STRING returns the mandated second value when applied
903 to displaced strings.
904 ** the #\Rubout and #\Backspace characters are treated as invalid
905 constituent characters by the tokenizer.
907 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
908 * new feature: reloading changed shared object files with
909 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
910 * new feature: references to foreign variables and functions
911 can now be compiled and loaded before the corresponding shared
912 object file is loaded, as long as the foreign definitions are
913 available at runtime.
914 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
915 supported. (thanks to Dan Debertin)
916 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
917 just keywords. (thanks to Vincent Arkesteijn)
918 * fixed bug #331: structure-class instances corresponding to
919 DEFSTRUCT forms are now created eagerly.
920 * fixed bug #345: backtraces from calls to undefined functions work
921 on x86 as well. Related bug #61 is now also partially fixed on x86
922 (backtraces from throws to unknown catch tags.)
923 * bug fix: lambda-list parsing is now stricter vrt. order and number
924 of lambda-list keywords.
925 * bug fix: as specified by AMOP, an error is signalled if a
926 class-option appears multiple times in a DEFCLASS form. (reported
928 * bug fix: RANDOM can be compiled when the compiler derives the type
929 of its numeric argument as a disjoint set of small integers.
930 (reported by Paul Dietz)
931 * bug fix: starting a core saved with shared objects loaded when
932 those objects are not available no longer causes threaded SBCL to
933 hang. (reported by Sean Ross)
934 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
936 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
937 argument, which must always be NIL. (reported by Kalle Niemitalo)
938 * bug fix: printing 1.0d+23 no longer results in an error.
939 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
940 * bug fix: structure slot setters preserve evaluation order. (thanks
942 * fixed some bugs related to Unicode integration:
943 ** RUN-PROGRAM can allow its child to take input from a Lisp
944 stream. (reported by Stefan Scholl)
945 ** ASDF-INSTALL successfully downloads .tar.gz files in all
946 locales. (reported by Ken Causey)
947 * fixed some bugs revealed by Paul Dietz' test suite:
948 ** INCF, DECF and REMF evaluate their place form as specified in
950 ** FORMATTER expands ~{ ~} iteration directives with V or #
951 parameters correctly.
952 ** FORMATTER deals with the ~@[ ~] conditional directive where the
953 consequent uses no arguments correctly.
954 ** the system has a partial understanding of the (COMPLEX RATIO)
956 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
959 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
960 * new feature: a build-time option (controlled by the :SB-UNICODE
961 keyword feature, enabled by default) for building the system with
962 support for the entire 21-bit character space defined by the
964 * new feature: the system now has rudimentary external-format
965 support; the primary user-visible change at this time is that
966 characters with the high bit set (such as lower-case-e-acute) will
967 print correctly to a terminal in a UTF-8 environment.
968 * minor incompatible change: BASE-CHAR no longer names a class;
969 however, CHARACTER continues to do so, as required by ANSI.
970 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
971 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
972 has been moved to the SB-EXT package (temporarily re-exported from
974 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
975 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
977 * fixed bug #351: better error-handlind and reporting for malformed
979 * fixed bug #350: bignum-printing is now more memory-efficient,
980 allowing printing of very large bignums, eg. (expt 2 10000000).
981 (reported by Bruno Haible)
982 * fixed bug #302: better primitive-type selection for intersection
984 * fixed bug #308: non-graphic characters now all have names, as
985 required. (reported by Bruno Haible)
986 * bug fix: redefining a class with different superclasses now correctly
987 removes it from the direct-subclasses of its previous superclasses.
988 (reported by David Morse)
989 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
990 new value now works. (reported by Bruno Haible)
991 * bug fix: correct canonicalization of multiple non-standard slot
992 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
993 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
994 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
995 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
996 now exists, an signals an error.
997 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
998 during macroexpansion for non-iteration variables as well. (reported
999 by Bruno Haible for CMUCL)
1000 * bug fix: Cyclic structures and unprintable objects in compiler
1001 messages no longer cause errors. (reported by Bruno Haible)
1002 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1003 and READ-FROM-STRING all now return a primary value of NIL if
1004 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1005 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1006 (reported by Bruno Haible for CMUCL)
1007 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1008 do not designate a condition. (reported by Bruno Haible for
1010 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1011 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1012 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1013 permitting resolution in favour of any of the conflicting symbols.
1014 (reported by Bruno Haible for CMUCL)
1015 * bug fix: EQUAL compiler optimizations is less aggressive on
1016 strings which can potentially compare true despite having distinct
1017 specialized array element types.
1018 * bug fix: unit enumerations can be defined without dividing by
1019 zero. (thanks to Vincent Arkesteijn)
1020 * FORMAT compile-time argument count checking has been enhanced.
1021 (report from Bruno Haible for CMUCL)
1022 * a partial workaround for the bug 262: the compiler does not try to
1023 inline-expand a local function doing RETURN-FROM from a deleted
1024 BLOCK. (thanks to Peter Denno for the bug report and to David
1025 Wragg for the simple test case)
1026 * fixed some bugs revealed by Paul Dietz' test suite:
1027 ** RENAME-PACKAGE allows all package designators as new package
1029 ** constraint propagation and lambda variable substitution are
1030 more cautious in dealing with partially deleted code.
1031 ** compiler sometimes lost reoptimization passes.
1032 ** CERROR, given a condition as condition designator, passes its
1033 remaining arguments to the continue format control without
1035 ** Case-altering FORMAT directives work correctly on non-ASCII
1037 ** The REAL type specifier handles bounds outside the floating
1038 point ranges without signalling FLOATING-POINT-OVERFLOW.
1039 ** Functions with IR1-transformations can create intercomponent
1040 references to global functions.
1041 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1043 ** FORMAT ~R treats a nil value for its first parameter correctly.
1045 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1046 * enhancement: saving cores with foreign code loaded is now
1047 supported on x86/NetBSD and sparc/Linux in addition to the previously
1048 supported platforms.
1049 * bug fix: on some platforms repeated installations caused multiple
1050 copies of HTML documentation to be installed -- should not happen
1051 any more. (reported by Stefan Scholl)
1052 * bug fix: parsing self-recursive alien record types multiple times
1053 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1054 original patch by Helmut Eller for CMUCL)
1055 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1056 (thanks to Richard Kreuter)
1057 * bug fix: defining classes whose accessors are methods on existing
1058 generic functions in other (locked) packages no longer signals
1059 bogus package lock violations. (reported by François-René Rideau)
1060 * bug fix: special variables as DEFMETHOD parameters no longer have
1061 associated bogus type declarations. (reported by David Wragg and
1063 * bug fix: read-write consistency on streams of element-type
1064 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1065 * bug fix: redefiniton of the only method of a generic function with
1066 no DEFGENERIC no longer emits a full WARNING. In addition,
1067 redefinition of generic functions with no DEFGENERIC to an
1068 incompatible lambda list now signals an error. (thanks to Zach
1070 * bug fix: DEFGENERIC now works even when there's a function of the
1071 same name in an enclosing lexical environment. (thanks to Zach
1073 * fixed compiler failure, caused by instrumenting code during
1074 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1075 * optimization: added loop analysis and improved register allocation
1076 * fixed some bugs revealed by Paul Dietz' test suite:
1077 ** POSITION on displaced vectors with non-zero displacement
1078 returns the right answer.
1079 ** (SIMPLE-STRING) is a valid type specifier for sequence
1081 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1083 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1084 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1086 ** The justification version of the FORMAT ~< directive treats
1087 non-zero minpad parameter correctly.
1089 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1090 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1091 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1092 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1093 the supported interface.
1094 * new feature: Single-stepping of code compiled with DEBUG 2 or
1095 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1096 * new feature: saving cores with foreign code loaded is now
1097 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1098 Timothy Moore's work for CMUCL)
1099 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1100 parameters to * instead of NIL if no initform is supplied.
1101 (reported by Johan Bockgaard)
1102 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1103 correctly when FUNCALL appears as the car of the form. Note:
1104 despite this FUNCALL forms are not currently subject to
1105 compiler-macro expansion. (port of Raymond Toy's fix for the
1106 same from CMUCL, reported by Johan Bockgaard)
1107 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1108 (thanks for Teemu Kalvas)
1109 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1110 case instead of terminating the iteration (thanks for Julian
1111 Squires, Sean Champ and Raymond Toy)
1112 * bug fix: incorrect expansion of defgeneric that caused a style
1113 warning. (thanks for Zach Beane)
1114 * bug fix: slot accessor effective method computation works properly
1115 for classes with multiple non-standard applicable methods on
1116 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1117 * on x86 compiler supports stack allocation of results of LIST and
1118 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1119 CMUCL implementation by Gerd Moellmann)
1120 * fixed some bugs revealed by Paul Dietz' test suite:
1121 ** FORMAT strings with both the ~<~:;~> form of the justification
1122 directive and pretty-printing directives cause an error.
1124 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1125 * incompatible change: the internal functions
1126 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1127 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1128 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1129 instead of the old functions.
1130 * new feature: on platforms where "dladdr" is available foreign
1131 function names now appear in backtraces. (based on Helmut Eller's
1133 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1134 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1136 * documentation: ASDF manual is now distributed with SBCL.
1137 * bug fix: SBCL can now load its contributed modules with REQUIRE
1138 even if the system-provided entries have been removed from
1139 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1141 * bug fix: backtraces involving undefined functions or assembly
1142 routines are more informative. (thanks to Brian Downing)
1143 * bug fix: mutually referent alien structures now work correctly.
1144 (reported by Rick Taube)
1145 * bug fix: structures defined by WITH-ALIEN can be referred to
1146 within other definitions in the same WITH-ALIEN.
1147 * bug fix: division operators (MOD, TRUNCATE and the like) with
1148 constant zero divisors and integer dividends no longer generate
1150 * bug fix: provide default methods for INPUT-STREAM-P and
1151 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1152 * bug fix: improve the detection and resolution of MOP metacycles
1153 (where effective method computation depends on the generic function
1154 having its effective method computed). (reported by Bruno Haible)
1155 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1156 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1157 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1158 * bug fix: pathnames with relative directory components can be
1159 represented relative to default pathnames.
1160 * optimization: in taking the GCD of bignums, reduce the two bignums
1161 to approximately the same size (using Euclid's algorithm) before
1162 applying the more sophisticated binary GCD. (thanks to Juho
1164 * optimization: COUNT on bitvectors now operates word-at-a-time.
1165 * optimization: ASH with a positive, but not necessarily constant,
1166 (leftwards) shift, when in a modular context, is compiled to a
1168 * fixed some bugs revealed by Paul Dietz' test suite:
1169 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1170 if the corresponding argument is NIL.
1171 ** FORMAT directives accepting a minpad parameter treat negative
1173 ** literal commas as character parameters to FORMAT directives are
1175 ** literal spaces directly after ~<Newline> directives within a
1176 format-logical-block (~:< ~@:>) do not induce :FILL-style
1177 conditional newlines.
1178 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1179 as specified: it no longer includes conditional newlines).
1180 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1182 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1183 :PER-LINE-PREFIX argument does not evaluate to a string.
1185 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1186 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1187 the manual for details; for now, package locks can be disabled by
1188 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1189 if no major problems are found then it is likely that they will be
1190 compiled in unconditionally.
1191 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1192 unsupported operators on all platforms. To load a shared library
1193 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1194 object file, link it into a shared library outside of SBCL and
1195 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1197 * bug workaround: ROOM T and the GC were not working together
1198 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1199 reporting facility aren't preserved. That reporting has been
1200 disabled, so now until and unless someone figures out how to make it
1201 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1202 * minor incompatible change: as threatened around sbcl-0.8.0, the
1203 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1204 The symbols are also exported from SB-PCL for backwards
1205 compatibility, but more so than before SB-PCL should be treated as
1206 an implementation-internal package.
1207 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1209 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1210 It is known as of this release not to work on the Alpha, however.
1211 * fixed bug #167: errors signalled due to illegal syntax in method
1212 bodies are now more legible.
1213 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1214 designators and can hence be used with TYPEP.
1215 * fixed bug #333: CHECK-TYPE now ensures that the type error
1216 signalled, if any, has the right object to be accessed by
1217 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1218 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1219 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1221 * fixed bug #334: programmatic addition of slots using specialized
1222 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1223 and :ALLOCATION :CLASS slots.
1224 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1225 float exponents. (rereported by Peter Seibel)
1226 * fixed a bug: #\Space (and other whitespace characters) are no
1227 longer considered to be macro characters in standard syntax by
1228 GET-MACRO-CHARACTER.
1229 * fixed bug: initialization of condition class metaobjects no longer
1230 causes an instance of the condition to be created. (reported by
1232 * fixed bug: it is now possible to have slots such that
1233 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1234 description is neither :INSTANCE nor :CLASS.
1235 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1236 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1237 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1238 non-standard SLOT-DEFINITION-ALLOCATION values.
1239 * fixed bugs: various race conditions handling exiting threads.
1240 CL-PPCRE's thread torture test now passes.
1241 * fixed arguably-a-bug: GC time proportional to number of threads in
1242 system even when most of them are idle
1243 * optimization: improved performance of BIT and SBIT on bit-vectors.
1244 * .fasl file incompatibility: The fasl file version number has
1245 been incremented because of changes associated with package locks.
1247 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1248 * minor incompatible change: the system no longer provides
1249 optimization hints (conditions which are TYPEP
1250 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1251 mode; these hints are still emitted when higher SPEED optimization
1253 * new contrib module: a sampling profiler (profiling by statistical
1254 sampling, rather than by instrumenting functions) is available as
1255 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1256 * the behaviour of the standard function ED is now customizeable by
1257 third parties through a hook variable: see ED's documentation
1258 string for information on the protocol.
1259 * the compiler no longer emits efficiency notes for (FUNCALL X)
1260 when the type of X is uncertain under default optimization
1262 * fixed bug 276: mutating a binding of a specialized parameter to a
1263 method to something that is not TYPEP the specializer is now
1265 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1266 exhibit the required behaviour on the x86 platform. (thanks to
1267 Peter van Eynde, Eric Marsden and Bruno Haible)
1268 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1269 even for difficult arguments. (reported by Peter Graves)
1270 * fixed bug 141a: the backquote printer now descends quoted
1272 * fixed another bug in backquote printing: no more destructive
1273 modification of the form's list structure. (reported by Brian
1275 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1276 move between its address being taken and the call to
1277 interrupt_thread, fixing a crashing race condition.
1278 * the SB-POSIX contrib implementation has been adjusted so that it
1279 no longer exhibits ridiculously poor performance when constructing
1280 instances corresponding to C structs.
1282 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1283 * minor incompatible change: the sb-grovel contrib now treats C
1284 structures as alien (in the sense of SB-ALIEN) objects rather than
1285 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1286 has implications for memory management of client code
1287 (sb-grovel-returned objects must now be manually managed) and for
1288 type safety (alien objects now have full types).
1289 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1290 used to control emission of compiler diagnostics, rather than the
1291 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1292 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1293 quality should be considered deprecated.
1294 * install.sh now installs the user manual as well
1295 * (not quite a new documentable feature, but worth considering in
1296 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1297 beginnings of a semantically meaningful condition hierarchy is
1298 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1300 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1301 designator as the defaults argument.
1302 * fixed bug: Displaced arrays whose displaced-to array has become
1303 too small now cause ARRAY-DIMENSION to signal an error, providing
1304 for safer bounds-checking. (reported by Bruno Haible)
1305 * fixed bug: DEFCLASS slot definitions with identical :READER and
1306 :WRITER names now signal a reasonable error. (reported by Thomas
1308 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1310 * fixed bug: Invalid slot specification errors now print correctly.
1311 (thanks to Zach Beane)
1312 * fixed bug 320: Shared to local slot value transfers in class
1313 redefinitions now happen corrently from superclasses as
1314 well. (reported by Bruno Haible)
1315 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1317 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1318 improper lists correctly. (reported by Bruno Haible)
1319 * fixed bug 313: source-transform for <fun-name> was erroneously
1320 applied to a call of a value of a variable with name <fun-name>.
1321 (reported by Antonio Menezes Leitao)
1322 * fixed bug 307: The obsolete instance protocol ensures that
1323 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1324 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1325 remove dead unknown-values globs from the middle of the stack.
1326 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1327 easier to resume long computations after using *BREAK-ON-SIGNALS*
1328 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1329 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1330 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1331 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1332 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1333 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1335 * fixed a (fairly theoretical) bug in string printing: if
1336 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1337 does not have array-element-type equal to the most general string
1339 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1340 function name. (thanks to Nikodemus Siivola)
1341 * fixed bug: compile-time format string checker failed on
1342 non-closed ~{. (reported by Thomas F Burdick)
1343 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1344 don't warn on legal loop code involving more than one aggregate
1345 boolean. (thanks to Nikodemus Siivola)
1346 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1347 in keyword position to MAKE-PACKAGE was not being reported as
1349 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1350 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1352 * fixed bugs 280 and 312: the checking for multiple definitions in a
1353 file is less likely to become confused by uses of inline
1355 * fixed bug: the #S reader macro performs the keyword coercion
1356 specified for slot names. (reported by Kalle Niemitalo)
1357 * fixed bug: lambda lists may contain symbols whose names start with
1358 & but are not lambda-list-keywords; their occurrence triggers a
1360 * fixed bug 321: define-method-combination argument lambda lists do
1361 not cause invalid code to be generated when &optional or &aux
1362 variables have default values. (reported by Bruno Haible)
1363 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1364 have CLOS classes; this appears also to have fixed reported
1365 instability in stack exhaustion detection.
1366 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1367 MUFFLE-WARNING when no associated restart is present is now
1369 * optimization: rearranged the expansion of various defining macros
1370 so that each expands into only one top-level form in a
1371 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1373 * optimization: used a previously little-used slot in symbols to
1374 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1376 * fixed some bugs revealed by Paul Dietz' test suite:
1377 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1379 ** Fixed an optimization bug related to inheritance of initforms
1380 from local to shared slots.
1381 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1382 ** CAST optimizer forgot to flush argument derived type.
1383 ** print/read consistency on floats is now orders of magnitude
1384 more likely. (thanks also to Bruno Haible for a similar report
1386 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1387 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1388 for objects of type REAL. Make it so.
1389 ** SXHASH is specified (infelicitously) to respect similarity,
1390 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1391 it so. (thanks to Markus Ziegler)
1392 ** on the Alpha, the compiler succeeds in compiling functions
1393 returning a known number of arguments greater than 63.
1394 ** fixed handling of invalid NIL arguments in keyword position
1396 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1398 ** provided a readably-printable representation for RANDOM-STATE
1400 ** ensured that pathnames, where they have a namestring, always
1401 print using #P"..." syntax.
1403 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1404 * Support for the forthcoming 2.0 version of the NetBSD kernel
1405 running on x86 hardware has been added. (thanks to Perry
1406 E. Metzger most immediately, and others for their past work)
1407 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1408 current release version; SBCL's OpenBSD support had been broken
1409 since about the time of OpenBSD's switch to ELF binary format.)
1410 * [placeholder for DX summary]
1411 ** user code with &REST lists declared dynamic-extent, under high
1412 speed or space and low safety and debug optimization policy.
1413 * The manual has been converted to Texinfo format and the debugger
1414 chapter from the cmucl manual has been added.
1415 * A facility has been added to extract documentation strings from
1416 sbcl and store them as Texinfo-formatted snippets for inclusion in
1417 the manual (via Texinfo's @include directive)
1418 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1419 the test case to Dave Roberts)
1420 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1421 pointers. (reported by Sean Ross)
1422 * bug fix: PROFILE output is printed nicely even for large numerical
1423 values. (thanks to Zach Beane)
1424 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1425 greater than 32 handle EOF correctly.
1426 * bug fix: on X86 an immediate argument of the IMUL instruction is
1427 correctly printed in disassembly. (thanks to Lutz Euler)
1428 * bug fix: class slots in redefined classes preserve their old
1429 values. (thanks to Bruno Haible and Nikodemus Siivola)
1430 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1431 succeeds. (reported by Marco Baringer)
1432 * fixed some bugs revealed by Paul Dietz' test suite:
1433 ** READ-SEQUENCE now works on ECHO-STREAMs.
1434 ** RATIONALIZE works more according to its specification. (thanks
1437 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1438 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1439 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1440 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1441 should matter to you only if you rebind the printer control
1442 variables and then find you want different bindings in the
1443 debugger than in the ordinary execution of your program.)
1444 * The runtime build system has been tweaked to support building
1445 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1446 assembler and linker. (thanks to Nikodemus Siivola)
1447 * Unbound, undefined, undeclared variables now trigger full
1448 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1449 more often programmer error than deliberate exploitation of undefined
1451 * optimization: the hash algorithm for strings has changed to one
1452 that is less vulnerable to spurious collisions. (thanks to Juho
1454 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1455 needless bounds checking. (thanks to Juho Snellman)
1456 * optimization: implemented multiplication as a modular
1457 (UNSIGNED-BYTE 32) operation on the PPC backend.
1458 * fixed some bugs revealed by Paul Dietz' test suite:
1459 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1461 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1462 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1463 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1465 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1467 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1469 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1470 their output stream on EOF from read.
1471 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1472 have been read to end-of-file.
1473 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1475 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1476 description of determination of which consecutive characters
1478 ** Printing the "Space" character with escaping on now yields "#\\ ",
1479 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1480 ** Reading floating-point numbers with *READ-BASE* set to a number
1481 less than 10 works correctly.
1482 ** Reading floating-point numbers with *READ-BASE* set to a number
1483 more than 10 works correctly.
1484 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1485 the readtable currently in effect.
1487 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1488 * minor incompatible change: parsing of namestrings on a physical
1489 (Unix) host has changed; numbers after the final #\. in a
1490 namestring are no longer interpreted as a version field. This is
1491 intented to be largely invisible to the user, except that the
1492 meaning of the namestring "*.*.*" has changed: it now refers to a
1493 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1494 should usually be replaced by
1495 (make-pathname :name :wild :type :wild :version :wild)
1496 with the added benefit that this is more likely to be portable.
1497 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1498 option to OPEN now signals an error if the file being opened
1499 exists; this may have an impact on existing code.
1500 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1501 signals received, on the PowerPC platforms (both Linux and
1502 Darwin). (thanks to Pierre Mai for pointing out the location of
1504 * several fixes on OS X: The system now builds and runs cleanly on
1505 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1506 (thanks to Brian Mastenbrook)
1507 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1508 second-resolution: integer multiples of 1/3600 between -24 and 24.
1509 (thanks to Vincent Arkesteijn)
1510 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1511 type when called with 1 argument; PEEK-CHAR checked type of
1512 PEEK-TYPE only after having read first character from a
1513 stream. (reported by Peter Graves)
1514 * bug fix: the garbage collector now has much better locality
1515 behaviour, and in particular no longer treats all memory as being
1516 exhausted when many small objects point to each other in a deeply
1518 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1519 recognized as being TYPEP their class.
1520 * bug fix: the PUSHNEW documentation string has been corrected.
1521 (thanks to Vincent Arkesteijn)
1522 * bug fix: defaulting of the value for the last of an atypically
1523 large number of multiple values being bound was not being
1524 performed correctly on the Alpha or PPC platforms
1525 * optimization: implemented multiplication as a modular
1526 (UNSIGNED-BYTE 32) operation on the x86 backend.
1527 * optimization: SEARCH on simple-base-strings can now be open-coded.
1528 (see also contrib/compiler-extras.lisp for inspiration for
1529 teaching the compiler about the Boyer-Moore algorithm).
1530 * value, returned by MAX (and MIN) called with several EQUALP, but
1531 not EQL, arguments now does not depend on compiler settings.
1532 * fixed some bugs revealed by Paul Dietz' test suite:
1533 ** in stack analysis liveness information is propagated from
1534 non-local entry points.
1535 ** pathwise CAST removing failed when the CAST node did not start
1537 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1538 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1540 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1541 host is already defined.
1542 ** RENAME-FILE works on streams instead of signalling an internal
1544 ** PEEK-CHAR uses the current readtable when determining whether
1545 or not a character is whitespace.
1546 ** MERGE-PATHNAMES handles the case when the pathname does not
1547 specify a name while the default-pathname specifies a version.
1548 ** Pathnames now stand a better chance of respecting print/read
1550 ** Attempting to use standardized file system operators with a
1551 pathname with invalid :DIRECTORY components signals a
1553 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1555 ** DIRECTORY on logical pathnames is more correct.
1556 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1557 signal a TYPE-ERROR if their argument is not a stream.
1558 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1559 designator argument does not designate a stream.
1560 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1561 examining the synonym.
1562 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1564 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1565 element-type larger than ([UN]SIGNED-BYTE 32).
1567 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1568 * When built with the :SB-FUTEX feature, threaded builds now take
1569 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1570 for faster/more reliable mutex and condition variable support.
1571 * Incompatible change (but one you probably shouldn't have been using
1572 anyway): the interface and code for arbitrating between multiple
1573 threads in the same user session has been redesigned.
1574 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1575 error when called without an explicit environment argument.
1576 (thanks to Nikodemus Siivola)
1577 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1578 confused about their position. (thanks to Adam Warner and Gerd
1580 * bug fix: Pretty printing backquoted forms with unquotations in the
1581 argument list position of various code constructs such as LAMBDA
1582 now works correctly. (reported by Paul Dietz)
1583 * bug fix: Pretty printing unquotations no longer loses all
1584 stream position information.
1585 * optimization: performance of string output streams is now less
1586 poor for multiple small sequence writes.
1587 * optimization: performance of CSUBTYPEP in the presence of complex
1588 expressions involving CONS and NOT many times has been improved.
1589 (reported by Paul Dietz)
1590 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1592 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1593 streams for the REPL, for the debugger, and so on. (thanks to
1595 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1596 * fixed some bugs revealed by Paul Dietz' test suite:
1597 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1598 is ignored if it is too small, rather than propagating through
1599 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1600 ** extremely complex negations of CONS types were not being
1601 sufficiently canonicalized, leading to inconsistencies in
1603 ** VALUES tranformer lost derived type.
1605 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1606 * fixed a bootstrapping bug: the build process no longer assumes
1607 that the various BOOLE-related constants have the same value in
1608 host and target lisps. (noted by Paul Dietz' test suite on an
1609 SBCL binary built from CLISP)
1610 * The system can now be dynamically linked on the MIPS platform,
1611 which enables dynamic loading of foreign code from Lisp. (thanks
1612 to Ralf Baechle for discussions on the MIPS ABI)
1613 * The system now records debugging information for its own source
1614 files in a filesystem-position-independent manner, relative to
1615 the "SYS" logical host.
1616 * fixed a compiler bug: MV-LET convertion did not check references
1617 to the "max args" entry point. (reported by Brian Downing)
1618 * tweaked disassembly notes to be less confident about proclaiming
1619 some instruction as an LRA. (thanks to Brian Downing)
1620 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1621 now each have their own history, command character, and other
1622 characteristics. (thanks to David Lichteblau)
1623 * fixed some bugs revealed by Paul Dietz' test suite:
1624 ** compiler failure in compiling LOGAND expressions including a
1626 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1627 shift greater than 32.
1628 ** FLUSH-DEST did not mark blocks for type check regeneration.
1629 ** HANDLER-CASE failed to accept declarations in handler clauses
1630 in some circumstances.
1632 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1633 * New code in contrib/sb-introspect (still probably not entirely
1634 stable yet) provides some support for smart Lisp development
1635 environments like SLIME.
1636 * The conditions signalled for errors occurring when loading .fasl
1637 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1638 in a way which should help ASDF recover gracefully.
1639 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1640 stuff has been cleaned up. If you code contrib/ stuff, this might
1641 affect you, and you can look at contrib/README, contrib/STANDARDS,
1642 and/or the 0.8.4.27 diff to check.
1643 * In full calls the compiler now does not generate checks for declared
1644 argument types for all arguments.
1645 * various threading fixes
1646 ** and some experimental patches which didn't make it into
1647 the main tree for this release, but which are shipped in
1648 contrib/experimental-thread.patch as a possible fix for some
1649 failures (deadlock, spinning...) in GC-intensive multithreaded
1651 * fixed PPC build problem (source code incompatibility of different
1652 library versions): added offsetof() hackery which attempts to divine
1653 where glibc maintainers put uc_mcontext today
1654 * fixed bug 282: compiler does not trust type assertions while passing
1655 arguments to a full call.
1656 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1657 &OPTIONAL VALUES type parameter.
1658 * fix bug 214: algorithm for noting rejected templates is now more
1659 similar to that of template seletion. (also reported by rydis on
1661 * fixed bug 141b: printing backquoted information readably and prettily
1662 inserts a space where necessary.
1663 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1664 (CHARACTER 10) are now reported as errors, rather than propagated
1665 as unknown types. (reported by piso on #lisp)
1666 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1667 with values NIL and :ERROR. (thanks to Milan Zamazal)
1668 * fixed bug 191c: CLOS now does proper keyword argument checking as
1669 described in CLHS 7.6.5 and 7.6.5.1.
1670 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1671 longer raise an error; further, using a list as a for-as-arithmetic
1672 counter now raises a meaningful error.
1673 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1674 now understood by sequence creation functions such as MAKE-SEQUENCE
1676 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1677 a STRING-INPUT-STREAM.
1678 * compiler enhancement: SIGNUM is now better able to derive the type
1680 * type declarations inside WITH-SLOTS are checked. (reported by
1682 * fixed some bugs revealed by Paul Dietz' test suite:
1683 ** incorrect optimization of TRUNCATE for a positive first
1684 argument and negative second.
1685 ** compiler failure in let-convertion during flushing dead code.
1686 ** compiler failure while deriving type of TRUNCATE on an
1687 interval, containing 0.
1688 ** ASH of a negative bignum by a negative bignum count now returns
1690 ** intersection of CONS types now canonicalizes properly, fixing
1691 inconsistencies in SUBTYPEP.
1693 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1694 * incompatible change: The --disable-debugger command line
1695 option now clobbers the debugger at a more fundamental
1696 level, by redefining #'INVOKE-DEBUGGER instead of by
1697 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1698 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1699 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1700 enter the debugger REPL and then suffer recursive errors
1701 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1702 while under the new system, BREAK in --disable-debugger mode
1703 terminates the system just as an unhandled error would.
1704 * fixed compiler performance when processing loops with a step >1;
1705 * bug fix: DOCUMENTATION now retrieves generic function
1706 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1707 support has been systematized, and now supports the methods
1708 specified by ANSI, along with a default method and a method for
1709 slot documentation. (reported by Nathan Froyd)
1710 * bug fix: effective methods associated with a generic function are
1711 no longer cached over a change of that generic function's method
1712 combination. (reported by Andreas Fuchs)
1713 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1714 names a non-existent directory. (thanks to Andreas Fuchs)
1715 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1716 the PPC platform, lead to stack corruption; this has been fixed.
1717 (reported by Rainer Joswig)
1718 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1719 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1720 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1721 arithmetic in general, is now much more reliable on the PPC
1723 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1724 platform now returns the right answer.
1725 * optimization: restored some effective method precomputation in
1726 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1727 precomputation is now tunable.
1728 * optimization: compiler-internal data structure use has been
1729 reviewed, and changes have been made that should improve the
1730 performance of the compiler by about 20%.
1731 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1732 simple-base-strings and simple-bit-vectors is improved.
1733 * optimization: the optimization of 32-bit logical and arithmetic
1734 functions introduced in version 0.8.3 on the x86 has been
1735 implemented on the mips, ppc and sparc platforms; an
1736 implementation of the same facility, but for 64-bit arithmetic,
1737 has been added for the alpha.
1738 * microoptimization: the compiler is better able to make use of the
1739 x86 LEA instruction for multiplication by constants.
1740 * bug fix: in some situations compiler did not report usage of
1741 generic arithmetic in (SPEED 3) policy.
1742 * bug 145b fix: compiler used wrong type specifier while converting
1743 MEMBER-types to numeric.
1744 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1746 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1747 index argument now works properly on the Alpha platform.
1748 * bug fix: floating point exception treatment on the Alpha platform
1750 * bug fix: FILE-POSITION works much better on string input and
1751 output streams. (thanks to Nikodemus Siivola)
1752 * bug fix: many threading/garbage collection symptoms sorted.
1753 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1754 might be pseudo-atomic.
1755 * internal change: Stopping for GC is now done with signals not
1756 ptrace. GC is now done in whichever thread wanted it, instead of
1758 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1760 * bug fix: result form in DO is not contained in the implicit
1762 * incompatible change: ICR structure is changed; the value part of
1763 CONTINUATION is now called LVAR; corresponding functions are
1764 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1765 * added type deriver for ISQRT (thanks to Robert E. Brown).
1766 * bug fix: better support for loading from the command line when an
1767 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1769 * fixed some bugs revealed by Paul Dietz' test suite:
1770 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1771 ** ROUND and FROUND now give the right answer when given very
1772 small float arguments.
1773 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1775 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1776 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1777 ** LCM should return a non-negative integer.
1778 ** PARSE-INTEGER returned the index of a terminator instead of the
1779 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1780 ** PARSE-INTEGER returned an incorrect index being applied to a
1782 ** LCM with two arguments of 0 returns 0 rather than signalling
1784 ** unsigned addition of a 32-bit constant with the high bit set no
1785 longer causes an internal compiler error on the x86.
1786 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1787 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1788 with negative last argument.
1789 ** byte specifiers with zero size and position no longer cause
1790 an error during type derivation.
1791 ** bignum multiplication on the Alpha platform now returns the
1793 * porting: The system now builds on SuSE AMD64, although it still
1794 generates a 32-bit binary.
1795 * .fasl file incompatibility: The fasl file version number has
1796 been incremented (because of the changes to internal compiler
1797 data structures referred to above).
1799 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1800 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1801 more accurately, on the Darwin kernel running on PowerPC hardware.
1802 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1803 * Compiler code deletion notes now signal a condition of type
1804 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1805 an associated MUFFLE-WARNING restart.
1806 * The compiler now performs limited argument count validation of
1807 constant format strings in FORMAT, and where appropriate in ERROR,
1808 CERROR and WARN. (thanks to Gerd Moellmann)
1809 * New ASDF-INSTALL contrib can be used for automatic download and
1810 installation of third-party Lisp code from CCLAN or other sites
1812 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1813 which forces another thread to execute a function supplied by the
1815 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1816 now accept and act upon their :ELEMENT-TYPE keyword argument.
1817 (reported by Martin Atzmueller, Edi Weitz)
1818 * bug fix: FILE-POSITION now accepts position designators up to
1819 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1820 is the greater. (thanks to Patrik Nordebo)
1821 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1822 Kalle Olavi Niemitalo)
1823 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1824 printable. (reported by Eric Marsden)
1825 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1826 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1827 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1828 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1829 (thanks to Stig Sandoe)
1830 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1831 UNREAD-CHAR now correctly includes the unread character in the
1832 target sequence. (thanks to Gerd Moellmann)
1833 * bug fix in threaded builds: the system can now be suspended and
1834 resumed by shell job control with minimal disruption.
1835 * bug fixes in times and timezones >2038AD
1836 * better handling of "where is GNU make?" problem in build scripts
1837 (thanks to Nikodemus Siivola)
1838 * new optimization: inside a named function any reference to a
1839 function with the same name is considered to be a self-reference;
1840 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1841 optimization quality.
1842 * new optimization on x86: logical functions and + now have
1843 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1844 used when the result is truncated to 32 bits.
1845 * VALUES declaration is partially enabled.
1846 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1847 * fixed some bugs revealed by Paul Dietz' test suite:
1848 ** The system now obeys the constraint imposed by
1849 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1850 types form a lattice under type intersection.
1851 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1852 ** ASSOC now ignores NIL elements in an alist.
1853 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1854 and (1+ MOST-POSITIVE-FIXNUM) answers.
1855 ** The addition of a method with invalid qualifiers to a generic
1856 function does not cause an error to be signalled immediately;
1857 a warning is signalled, and the error is generated only on
1858 calling the generic function.
1859 * changed .fasl file version number, in part to add type codes for
1860 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1861 obscure ANSI requirements
1863 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1864 * fixed bug 148: failure to inline-expand a local function left
1865 garbage, confusing the compiler.
1866 * fixed bugs 3cd: structure slot readers perform type check if the
1867 slot can have an invalid value (i.e. it is either not initialized
1868 or can be written with a less specific slot writer).
1869 * bug fix: the compiler now traps array references to elements off
1870 the end of an array; previously, the bounds checking in some
1871 circumstances could go off-by-one.
1872 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1874 * type declarations for array element types now obey the description
1875 on the CLHS page "Declaration TYPE", as per discussions on
1876 sbcl-help around 2003-05-08. This means that a declaration
1877 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1878 declaration, all references to BAR will be asserted or assumed
1879 (with THE, so dependent on compiler policy) to involve objects of
1880 type FOO. Note that no such declaration is implied in
1881 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1882 * declared types of functions from the "Conditions"
1883 chapter. (reported by Paul Dietz)
1884 * bug fix: CERROR accepts a function as its first argument.
1885 * bug fix: NTH an NTHCDR accept a bignum as index
1886 arguments. (reported by Adam Warner)
1887 * optimization: character compare routines now optimize comparing
1888 against a constant character. (reported by Gilbert Baumann)
1889 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1890 argument now works properly on the MIPS platform.
1891 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1892 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1893 declared to have a functional type, does not cause an error
1895 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1896 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1897 * fixed bug: if last continuation of a deleted block has a
1898 destination, this destination should be deleted too. (reported by
1900 * fixed a bug in the bootstrap process: the host compiler's values
1901 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1902 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1903 test case from Patrik Nordebo)
1904 * improved the ability of the disassembler on the PPC platform to
1905 provide helpful disassembly notes.
1906 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1907 the class in more cases than previously.
1908 * bug fix: FILE-POSITION now understands :START and :END for
1909 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1910 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1911 8) data. (thanks to David Lichteblau)
1912 * bug fix: it is possible to add a method to a generic function
1913 without lambda list.
1914 * bug fix: reader failed to signal END-OF-FILE inside an
1915 object representation. (reported by Nikodemus Siivola)
1916 * fixed some bugs revealed by Paul Dietz' test suite:
1917 ** LAST and [N]BUTLAST should accept a bignum.
1918 ** condition slot accessors are methods.
1919 ** (VECTOR NIL) is a subtype of STRING.
1921 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1922 * minor incompatible change: some nonsensical specialized lambda
1923 lists (used in DEFMETHOD) which were previously ignored now signal
1925 * minor incompatible change: the system is now aware of the types of
1926 variables in the COMMON-LISP package, and will signal errors for
1927 most violations of these type constraints (where previously they
1928 were silently accepted).
1929 * minor incompatible change: COMPILE-FILE now uses the freedom
1930 afforded (ANSI 3.2.2.3) to use derived function types for
1931 functions defined in the same file. This also permits the system
1932 to warn on static type mismatches and function
1933 redefinition. (Currently it does not work with high DEBUG level.)
1934 * minor incompatible change: VALUES declaration is disabled.
1935 * When issuing notes, the compiler now signals a condition of type
1936 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1937 restart for use in user handlers. It is expected that the
1938 COMPILER-NOTE condition will eventually become a condition
1939 supertype to a hierarchy of note types, which will then be
1940 handleable in a similar fashion. However, at the moment, no such
1941 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1942 but it's an implementation detail, not a classification for the
1944 * Changes in type checking closed the following bugs:
1945 ** type checking of unused values (192b, 194d, 203);
1946 ** template selection based on unsafe type assertions (192c, 236);
1947 ** type checking in branches (194bc).
1948 * A short form of VALUES type specifier has ANSI meaning (it has
1949 increased the number of situations when SBCL cannot perform type
1951 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1952 keywords or constants is permissible.
1953 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1954 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1955 classes. (thanks to Antonio Martinez)
1956 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1957 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1958 argument to a pretty-print stream. Instead, it leaves any such
1959 operations to DESCRIBE-OBJECT methods.
1960 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1962 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1963 lambda lists. (thanks to David Lichteblau)
1964 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1965 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1966 (thanks to Gerd Moellmann)
1967 * fixed bug 246: increased compilation speed of long
1968 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1970 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1972 * DEFCONSTANT now throws a condition of type
1973 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1974 constant to a non-EQL value; CONTINUE and ABORT restarts
1975 respectively change and preserve the value.
1976 * fixed bug 63: The code walker, part of the implementation of CLOS,
1977 is now better at handling symbol macros.
1978 * bug fix: There is no longer an internal implementation type named
1979 CL:LENGTH. (reported by Raymond Toy)
1980 * bug fix: In macro-like defining macros/special operators the
1981 implicit block does not enclose the lambda list.
1982 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1983 enclosed in parentheses) are not suitable as type specifiers, and
1984 their use properly signals an error now.
1985 * bug fix: An argument count mismatch for a type specifier in code
1986 being compiled no longer causes an unhandled error at compile
1987 time, but signals a compile-time warning.
1988 * fixed simple vector readable printing
1989 * bug fix: DESCRIBE takes more care over whether the class
1990 precedence list slot of a class is bound before accessing it.
1991 (reported by Markus Krummenacker)
1992 * bug fix: FORMATTER can successfully compile pretty-printer format
1993 strings which use variants of the ~* directive inside.
1994 * bug fix: SEARCH now applies its TEST predicate to the elements of
1995 the arguments in the correct order. (thanks to Wolfhard Buss)
1996 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1997 in type inference. (thanks to Robert E. Brown)
1998 * bug fix: Reading in symbols with an explicit package name of ""
1999 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2000 * fixed some bugs revealed by Paul Dietz' test suite:
2001 ** NIL is now allowed as a structure slot name.
2002 ** Arbitrary numbers, not just REALs, are allowed in certain
2003 circumstances in LOOP for-as-arithmetic clauses.
2004 ** Multiple class redefinitions before slot access no longer
2005 causes a type error.
2006 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2007 association between the name and a class.
2008 ** Generic functions with non-standard method-combination and over
2009 five methods all of which return constants no longer return NIL
2010 after the first few invocations. (thanks to Gerd Moellmann)
2011 ** CALL-NEXT-METHOD with no arguments now passes the original
2012 values of the arguments, even in the presence of assignment.
2013 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2015 ** DISASSEMBLE works with closures and funcallable instances.
2016 ** ADD-METHOD now returns the generic function, not the new method.
2017 ** FIND-METHOD signals an error if the lengths of the specializers
2018 is incompatible with the generic function, even if the ERRORP
2020 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2021 which its argument is a member.
2022 ** DEFCLASS only redefines the class named by its class-name
2023 argument if that name is the proper name of the class;
2024 otherwise, it creates a new class.
2025 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2026 of the UNBOUND-SLOT condition to the name of the slot.
2027 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2028 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2029 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2030 SLOT-MAKUNBOUND in the specified fashion.
2032 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2033 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2034 cross-compilation host. As a consequence, we can now bootstrap our
2035 way up to SBCL starting with a bare gcc toolchain and human-readable
2036 source code (first the source to CLISP, then the source to SBCL).
2037 * A contributed module containing a partial implementation of the
2038 simple-streams interface has been included. (thanks to Rudi
2040 * A contributed module implementing the RFC1321 Message Digest
2041 Algorithm, known as MD5, has been included.
2042 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2043 no longer has any effect, as the code controlled by this feature
2044 has been deleted. (As far as we know, no-one has ever built using
2045 this feature, and its semantics were confused in any case).
2046 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2047 work on conditions (as required by the ANSI specification),
2048 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2049 expected behaviour on conditions. Users should note, however,
2050 that such behaviour is not required by the ANSI specification,
2051 and so use of this behaviour may render their code unportable.
2052 * fixed some bugs revealed by Paul Dietz' test suite:
2053 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2055 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2056 ** SXHASH on condition objects no longer returns NIL.
2057 ** :ALLOCATION :CLASS slots are better treated; their values are
2058 updated on class redefinition, and initforms inherited from
2059 superclasses are applied.
2060 ** REMOVE-METHOD returns its generic function argument even when
2061 no method was removed.
2062 ** SHARED-INITIALIZE now initializes the values of the requested
2063 slots, including those with :ALLOCATION :CLASS.
2064 ** ALLOCATE-INSTANCE now works on structure classes defined via
2065 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2067 ** SLOT-EXISTS-P now works on conditions, as well as structures
2069 ** MAKE-LOAD-FORM now has the required methods on
2070 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2071 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2072 keyword, and now implements the SLOT-NAMES argument.
2073 ** methods with &OPTIONAL arguments no longer allow too many
2074 arguments to be passed in the call without error.
2075 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2076 option is consistent with the required arguments of the generic
2077 function lambda list.
2078 * bug fix: REQUIRE accepts a string designator. (Thanks to
2080 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2081 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2082 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2083 * bug fix: The compiler now checks for duplicated variables in macro
2085 * bug fix: SETQ on globals returns the correct value.
2086 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2087 not a COMPILER-ERROR (followed by some other strange error on
2088 choosing the CONTINUE restart).
2089 * bug fix: make.sh and friends are now more consistent in the way that
2090 they look for GNU "make".
2092 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2093 * experimental native threads support (on x86 Linux >=2.4 only).
2094 This is not compiled in by default: you need to add :SB-THREAD to
2095 the target features. See the "Beyond ANSI" chapter of the manual
2097 * fix for longstanding nonANSIism: The old distinction between
2098 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2099 The return value from CL:FIND-CLASS is now a CLOS class, and
2100 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2101 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2102 * An interface to the MetaObject Protocol, as described in Kiczales,
2103 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2104 MIT Press, 1991, is available from the SB-MOP package.
2105 * incompatible change: the SB-PCL package should now be considered
2106 a private implementation detail, and no longer a semi-private MOP
2108 * minor incompatible change: due to rearrangement for threads, the
2109 control stack and binding stack are now allocated at arbitrary
2110 addresses instead of being hardcoded per-port. Users affected by
2111 this probably have to be doing advanced things with shared
2112 libraries, and will know who they are.
2113 * minor incompatible change: Previously, all --eval forms used were
2114 processed with READ before any of them were processed with EVAL.
2115 Now each --eval form is processed with both READ and EVAL before
2116 the next --eval form is processed. (Thus package operations like
2117 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2118 work as the user might reasonably expect.)
2119 * minor incompatible change: *STANDARD-INPUT* is now only an
2120 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2122 * minor incompatible change: Y-OR-N-P is now character-oriented,
2123 not line oriented. Also, YES-OR-NO-P now works without errors.
2124 (thanks to Antonio Martinez)
2125 * sb-aclrepl module improvements: an integrated inspector, added
2126 repl features, and a bug fix to :trace command.
2127 * Known functions, which cannot be open coded by the backend, are
2128 considered to be able to check types of their arguments. (fixing
2129 a bug report by Nathan J. Froyd)
2130 * fixed a bug in computing method discriminating functions: It is
2131 now possible to define methods specialized on classes which have
2132 forward-referenced superclasses. (thanks to Gerd Moellmann)
2133 * fixed evaluation order in optional entries (reported by Gilbert
2135 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2136 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2137 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2138 required-by-AMOP NAME argument, as well as CLASS and
2139 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2140 * fixed bug 20: DEFMETHOD can define methods using names that are
2141 not the proper names of classes to designate class specializers.
2142 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2143 Unix file descriptors, instead of blowing up. (thanks to Antonio
2145 * Garbage collection refactoring: user-visible change is that a
2146 call to the GC function during WITHOUT-GCING will not do garbage
2147 collection until the end of the WITHOUT-GCING. If you were doing
2148 this you were probably losing anyway.
2149 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2150 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2151 TYPEP the latter but not the former.
2152 * The compiler issues a full WARNING for calls to undefined functions
2153 with names from the CL package.
2154 * MAP-INTO for a vector destination is open coded. (reported by
2155 Brian Downing on c.l.l)
2156 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2157 documentation string.
2158 * fixed some bugs revealed by Paul Dietz' test suite:
2159 ** COPY-ALIST now signals an error if its argument is a dotted
2161 ** Condition slots are now accessed more correctly in the presence
2162 of multiple initargs for a given slot.
2163 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2164 exclude restarts of the same name associated with a different
2166 ** DEFCLASS of forward-referenced classes with another
2167 forward-referenced class in the superclasses list no longer
2169 ** Condition slots are now initialized once each, not multiple
2170 times. (thanks to Gerd Moellmann)
2171 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2173 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2174 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2175 arguments contain duplicated elements.
2176 ** RESTART-CASE understands local macros.
2177 ** RESTART-CASE associates exactly its own restarts with a condition.
2178 ** ENDP in safe mode checks its argument to be of type LIST.
2179 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2180 in question is unbound.
2181 ** Optimized MAKE-INSTANCE functions no longer cause internal
2182 assertion failures in the presence of duplicate initargs.
2183 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2184 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2185 propagated even in the ctor optimized implementation of
2187 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2189 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2190 * a better implementation of SXHASH on (simple) bit vectors,
2191 measured both in execution speed and in distribution of results
2192 over the positive fixnums, has been installed. Likewise, a better
2193 implementation of EQUAL for simple bit vectors is now available.
2194 * fixed CEILING optimization for a divisor of form 2^k.
2195 * fixed bug 240 (emitting extra style warnings "using the lexical
2196 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2197 by Antonio Martinez)
2198 * fixed SXHASH, giving different results for NIL depending on type
2199 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2200 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2201 variable. (found by Rolf Wester)
2202 * SBCL does not ignore type declarations for special
2203 variables. (reported by rif on c.l.l 2003-03-05)
2204 * some bug fixes in contrib/sb-aclrepl/
2205 * fixed some bugs revealed by Paul Dietz' test suite:
2206 ** a bug in the CONS type specifier, whereby the CAR and CDR
2207 types got intertwined, has been fixed;
2208 ** the type system is now able to reason about the interaction
2209 between INTEGER and RATIO types more completely;
2210 ** APPEND, [N]REVERSE and NRECONC check that those their
2211 arguments, which must be proper lists, are really so;
2212 ** An array specialized to be unable to hold elements has been
2213 implemented, as required -- yes, really -- by ANSI;
2214 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2215 on malformed property lists;
2217 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2218 * incompatible packaging change: in line with Unix convention,
2219 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2220 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2221 * REQUIRE and PROVIDE are now optionally capable of doing something
2222 useful. See the documentation string for REQUIRE.
2223 * infrastructure for a managed SBCL contrib system: contributed
2224 modules in this release include:
2225 ** the ASDF system definition facility;
2226 ** an interface to the BSD Sockets API;
2227 ** an ACL-like convenience interface to the repl;
2228 (thanks to Kevin Rosenberg)
2229 ** an implementation of ROTATE-BYTE, with efficient implementation
2231 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2232 gives a closer approximation to the right answer than previously.
2233 (thanks to Raymond Toy)
2234 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2235 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2236 optional environment arguments, as required by ANSI.
2237 * fixed bugs in other functions taking environment objects, allowing
2238 calls with an explicit NIL environment argument to be compiled
2240 * fixed bug 228: primary return values from
2241 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2242 COMPILE or FUNCTION.
2243 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2244 :TYPE will no longer signal errors on innocuous objects.
2245 * fixed bug 231b: SETQ is better at respecting type declarations in
2246 the lexical environment.
2247 * fixed a bug in DEFCLASS: classes named by symbols with no or
2248 unprintable packages can now be defined.
2249 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2250 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2251 * fixed compiler failure related to checking types of functions.
2252 (reported by Robert E. Brown)
2253 * the compiler is now much more consistent in its error-checking
2254 treatment of bounding index arguments to sequence functions: in
2255 (SAFETY 3) code, errors will be signalled in almost all cases if
2256 invalid sequence bounding indices are passed to functions defined
2257 by ANSI to operate on sequences.
2258 * fixed a bug in the build procedure: documentation of SBCL-specific
2259 packages is now preserved and available in the final Lisp image.
2260 * lifted FDEFINITION lookup out of loops in the implementation of
2261 many list operations. (thanks to Robert E. Brown)
2262 * fixed a bug in the reader: the #n# reader macro now works for
2263 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2264 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2265 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2266 E. Brown and Tony Martinez respectively)
2267 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2268 SLOT-BOUNDP: in particular, it is now able to optimize them much
2269 better, and is now not vulnerable to having packages renamed.
2270 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2271 always called when a slot is not present in an instance. (thanks
2273 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2274 longer signal an error on unreading a character following EOF on
2275 the previous constituent stream. (thanks to Tony Martinez)
2276 * fixed some bugs revealed by Paul Dietz' test suite:
2277 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2278 not just nonnegative fixnums;
2279 ** the logical bit-array operators such as BIT-AND now accept an
2280 explicit NIL for their "opt-arg" argument (to indicate a
2281 freshly-consed result bit-array);
2282 ** ELT now signals an error on an invalid sequence index in safe
2284 ** the type system is now cleverer about negations of numeric
2285 types, and consequently understands the BIGNUM and RATIO types
2287 ** the type system is now cleverer about the interaction between
2288 INTEGER and RATIO types: while bugs still remain, many more
2289 cases are accurately computed;
2290 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2291 if it is in the last clause;
2292 ** CONSTANTLY now correctly returns a side-effect-free function in
2294 ** DECLARE is no longer treated as a special-operator; in
2295 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2296 * incremented fasl file version number due to the change in the
2297 DEFSTRUCT-SLOT-DESCRIPTION structure.
2299 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2300 * minor incompatible change: code processed by the "interpreter" or
2301 EVAL now has a compilation optimization policy of (DEBUG 2)
2302 (changed from (DEBUG 1)) to improve debuggability of interactive
2303 development, and to allow the use of the debug RETURN command in
2305 * an experimental implementation of the RETURN command for the
2306 debugger has been included. (thanks to Frederik Kuivinen)
2307 * fixed bug 62: constraints were not propagated into a loop.
2308 * fixed bug in embedded calls of SORT (reported and investigated by
2310 * fixed some bugs revealed by Paul Dietz' test suite:
2311 ** printing and reading of arrays with some dimensions having
2312 length 0 (thanks to Gerd Moellmann);
2313 ** BOA constructor with &AUX argument without a default value does
2314 not cause a type error;
2315 ** CONSTANTP now returns true for all self-evaluating objects.
2317 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2318 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2319 accessors that are related by inheritance, as specified in the
2320 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2321 Valtteri Vuorikoski)
2322 * The compiler is now able to inline functions that were defined in
2323 a complex lexical environment (e.g. inside a MACROLET).
2324 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2326 * Support for the upcoming FreeBSD-5.0 release has been included.
2327 (thanks to Dag-Erling Smorgrav)
2328 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2329 effect when it is not in a toplevel context.
2330 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2331 stand a better chance of being correct. (thanks to Gerd
2333 * fixed bug in COERCE, which now signals an error on coercing a
2334 rational to a bounded real type which excludes the expected
2336 * The compiler is now able to derive types more accurately from the
2337 COERCE and COMPILE functions.
2338 * fixed bug 223: functional binding is considered to be constant
2339 only for symbols in the CL package.
2340 * fixed bug 231: SETQ did not check the type of a variable being set
2341 (reported by Robert E. Brown)
2342 * A new optimization for MAKE-INSTANCE has been included, fixing
2343 various bugs (including relating to :ALLOCATION :CLASS slots and
2344 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2346 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2347 ** As required by ANSI, LOOP now disallows anonymous collection
2348 clauses such as COLLECT I in conjunction with aggregate boolean
2349 clauses such as THEREIS (= I 1);
2350 ** LOOP now signals an error when any variable is reused in the
2351 same loop (including the potentially useful construct analogous
2352 to WITH A = 1 WITH A = (1+ A);
2353 ** IT is only a special loop symbol within the first clause of a
2354 conditional loop clause;
2355 ** LOOP with a typed iteration variable over a hashtable now
2356 signals a type error iff it should.
2357 * fixed some other bugs revealed by Paul Dietz' test suite:
2358 ** FILE-STREAM now names the class previously known as FD-STREAM;
2359 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2360 argument) no longer signals an error;
2361 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2362 of the slot symbol, rather than using the current package
2363 ((:CONC-NAME "") continues to intern the slot's name in the
2365 * incremented fasl file version number, because of the incompatible
2366 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2367 of the new implementation of DEFINE-COMPILER-MACRO.
2369 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2370 * Support for building SBCL for MIPS platforms running in
2371 little-endian mode has now been checked in, and basic
2372 functionality on said platforms verified.
2373 * minor incompatible change: PCL now records the pathname of a file
2374 in which methods and the like are defined, rather than its
2376 * minor incompatible change: TRUENAME now considers the truename of
2377 a file naming a directory to be the pathname with :DIRECTORY
2378 component indicating that directory.
2379 * minor incompatible change: a NAMED clause in the extended form of
2380 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2381 reason for the previous behaviour is unclear.
2382 * more systematization and improvement of CLOS and MOP conformance
2383 in PCL (thanks to Gerd Moellman and Pierre Mai):
2384 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2386 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2387 primary methods with no specializers;
2388 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2390 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2391 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2392 FORWARD-REFERENCED-CLASSes; error reporting on
2393 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2395 ** SXHASH on CLOS instances now uses a slot internal to the
2396 instance to return different numbers on distinct instances,
2397 while preserving the same return value through invocations of
2399 ** DEFMETHOD signals errors when methods with longer incongruent
2400 lambda lists are added to generic functions;
2401 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2402 CLASS, as specified in AMOP;
2403 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2404 on the order returned by the primary method for classes of
2405 class STANDARD-CLASS;
2406 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2407 * fixed some bugs shown by Paul Dietz' test suite:
2408 ** DOLIST puts its body in TAGBODY;
2409 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2411 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2412 value producing form;
2413 ** if more variables are given to PROGV than values, extra
2414 variables are bound and made to have no value;
2415 ** NSUBSTITUTE on list arguments gets the right answer with
2417 ** ELT signals an error of type TYPE-ERROR when the index argument
2418 is not a valid sequence index;
2419 ** LOOP signals (at macroexpansion time) an error of type
2420 PROGRAM-ERROR when duplicate variable names are found;
2421 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2422 ** FUNCALL of special-operators now cause an error of type
2424 ** PSETQ now works as required in the presence of side-effecting
2425 symbol-macro places;
2426 ** NCONC accepts any object as its last argument;
2427 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2429 ** loop-for-as-package does not require a package to be explicitely
2431 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2433 * fixed bug 166: compiler preserves "there is a way to go"
2434 invariant when deleting code.
2435 * fixed bug 172: macro lambda lists with required arguments after
2436 &REST arguments now cause an error to be signalled. (thanks to
2438 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2439 bug. (thanks to Matthew Danish)
2440 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2442 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2443 arguments are lexically rebound. (thanks to Gerd Moellmann and
2445 * fixed bug 194: error messages are now more informative when there
2446 is no primary method applicable in a call to a generic
2447 function. (thanks to Gerd Moellmann)
2448 * fixed bug in command line argument checking (thanks to Julian
2450 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2451 (thanks to Matthew Danish)
2452 * incremented fasl file version number, because of the
2453 SXHASH-related changes in the layout of CLOS data structures
2455 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2456 * minor incompatible change: The runtime (the Unix executable named
2457 "sbcl") is now much pickier about the .core files it will load.
2458 Essentially it now requires .core files to descend from the same
2459 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2460 as the runtime does. (The intent is to prevent the crashes which
2461 can occur, and which can even be reported as mysterious failures,
2462 when people patch the sources or change the build parameters
2463 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2464 sbcl and .core files.)
2465 * fixed bug: VALUES-LIST is no longer optimized away.
2466 * fixed bug 142: The FFI conversion of C string values to Lisp
2467 string values no longer conses excessively. (thanks to Nathan
2468 Froyd porting Raymond Toy's fix to CMU CL)
2469 * began to systematize and improve MOP conformance in PCL (thanks to
2470 Nathan Froyd, Gerd Moellman and Pierre Mai):
2471 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2473 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2474 ** FINALIZE-INHERITANCE is now called on class finalization;
2475 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2476 argument precedence order.
2477 * fixed bug 202: The compiler no longer fails on functions whose
2478 derived types contradict their declared type.
2479 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2480 so it can be non-toplevel.
2481 * The fasl file version number has changed (because of the new
2482 implementation of DEFMACRO).
2483 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2484 safe code, that any length requirement by their type-specifier
2485 argument is valid. The exceptions to this are described in bug
2487 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2488 functions now check the types of their inputs as required by ANSI.
2489 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2490 introduced symbol is DECLAREd to be SPECIAL.
2491 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2492 * fixed bug: :COUNT argument to sequence functions may be negative
2493 * fixed bug: body of DO-SYMBOLS may contain declarations
2494 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2495 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2496 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2497 symbol macro only once
2498 * fixed printing of call frame when argument list is unavailable
2499 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2500 * compiler no longer signals WARNING on unknown keyword
2503 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2504 * A beta-quality port to the mips architecture running Linux,
2505 based on the old CMUCL backend, has been made. It has been tested
2506 on a big-endian kernel, and works sufficiently well to be able to
2507 rebuild itself; it has not been tested in little-endian mode.
2508 * fixed an inconsistency between gencgc.c and purify.c which made
2509 dumping/loading .core files unreliable
2510 * fixed bug 120a: The compiler now deals correctly with IFs where
2511 the consequent is the same as the alternative, instead of
2512 misderiving the return type. (thanks to Alexey Dejneka)
2513 * fixed bug 113: Logical pathnames are now dumpable (the logical
2514 host is resolved at load-time, throwing an error if it is not
2516 * fixed bug 174: FORMAT's error message is slightly clearer when a
2517 non-printing character is used in a format directive.
2518 * fixed several bugs in compiler checking of type declarations, i.e.
2519 violations of the Python "declarations are assertions" principle
2520 (thanks to Alexey Dejneka)
2521 * fixed several bugs in PCL's error checking (thanks to Gerd
2523 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2525 * fixed bug in compilation of functions as first class values
2526 (thanks to Antonio Martinez-Shotton)
2527 * The compiler's handling TYPE-ERRORs which it can prove will
2528 inevitably happen at runtime has been cleaned up and corrected
2529 in several ways. (thanks to Alexey Dejneka)
2530 * improved argument type checking for various basic arithmetic
2531 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2532 lavished on them in the past that they can be compiled in many
2533 ways in different special cases
2534 * fixed bug 181: compiler checks validity of user supplied type
2536 * cleaned up code flushing in optimization: Function calls which
2537 should signal errors for safety purposes (e.g. which ANSI says
2538 should signal errors when their arguments are of incorrect type)
2539 are no longer optimized away.
2540 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2541 * incremented fasl file version number, because changes in the
2542 implementation of sequence functions like COERCE caused
2543 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2544 in old inline expansions) to become undefined. (Actually these
2545 changes were later undone, so we might very well be binary
2546 compatible with 0.7.7 after all, but leaving the version number
2547 incremented seemed like the simplest and most conservative
2550 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2551 * An alpha-quality port to the parisc architecture running Linux,
2552 based on the old CMUCL backend, has been made. This, even more so
2553 than the other backends, should be considered still a work in
2554 progress; known problems include that the Linux kernel in 64-bit
2555 mode does not propagate the correct sigcontext structure to
2556 userspace, and consequently SBCL on a parisc64 kernel will not
2558 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2559 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2560 suppressed.) Also now that the compiler is looking at declarations
2561 in the environment, it checks optimization declarations as well,
2562 and suppresses inlining when (> DEBUG SPEED).
2563 * More fixes have been made to treatment of floating point exception
2564 treatment and other Unix signals. In particular, floating point
2565 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2566 * The detection and handling of control stack exhaustion (infinite
2567 or very deeply nested recursion) has changed. Stack exhaustion
2568 detection is now done by write-protecting pages at the OS level
2569 and applies at all optimization settings; when found, a
2570 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2571 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2572 be caught using IGNORE-ERRORS.
2573 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2574 correctly when transforming recursive LABELS functions to LETs.
2575 (thanks to Alexey Dejneka)
2576 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2577 that are names of constants or global variables.
2578 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2579 alien routines with docstrings.
2580 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2581 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2583 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2584 (thanks to Eric Marsden)
2585 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2586 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2587 * Bug fix: The SPARC backend can now compile functions involving
2588 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2589 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2590 to a functions expecting a PATHNAME-DESIGNATOR.
2591 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2592 lambda lists. (thanks to Alexey Dejneka)
2593 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2594 functions so that EXPORTing the name of the class doesn't cause
2595 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2596 to Antonio Martinez for reporting this)
2597 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2598 constant-folded without failing an assertion. (thanks to Einar
2599 Floystad Dorum for reporting this)
2600 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2601 types are now dealt with more correctly by the compiler.
2602 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2603 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2604 behaviour analogous to RENAME-FILE. This puts its behaviour more
2605 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2607 * The fasl file version number has changed again. (because of the
2608 bug fix involving the names of PCL MAKE-INSTANCE functions)
2610 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2611 * bug fix: Floating point exceptions are treated much more
2612 consistently on the x86/Linux and PPC/Linux platforms.
2613 * Array initialization with :INITIAL-ELEMENT is now much faster for
2614 cases when the compiler cannot open code the array creation, but
2615 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2616 array accesses have also seen a speed increase.
2617 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2618 specified. (This was at the root of some bad interactions between
2619 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2621 * bug fix: Internal error arguments for undefined functions are now
2622 computed correctly on the PPC/Linux platform.
2623 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2624 Raymond Toy's patch for CMU CL)
2625 * Support for the Solaris 9 operating environment has been included
2626 (thanks to Daniel Merritt)
2627 * A very ugly but hopefully complete draft of the missing FFI chapter
2628 of the manual has been created by reformatting the corresponding
2629 CMU CL manual chapter into (currently very ugly and incoherent)
2630 DocBook and bringing it up to date for SBCL behavior. Thus, the
2631 manual is now essentially complete, at least by my extreme
2632 once-and-only-once standards, whereby it's acceptable to refer to
2633 the doc strings of SB-EXT functions as the primary documentation.
2634 * The fasl file version number has changed again, due to cleanup of
2635 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2636 is no longer a static symbol.)
2638 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2639 * SBCL now builds with OpenMCL (version 0.12) as the
2640 cross-compilation host; also, more progress has been made toward
2641 bootstrapping under CLISP.
2642 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2644 * bug 158 fixed: The compiler can now deal with integer loop
2645 increments different from 1; fixing this turned out also to fix
2647 * bug 169 fixed: no more bogus warnings about using lexical bindings
2648 despite the presence of perfectly good SPECIAL declarations (thanks
2649 to David Lichteblau)
2650 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2651 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2652 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2654 * bug 180 fixed: Method combination specifications no longer ignore
2655 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2656 * bug fix: Structure type predicate functions now check their argument
2657 count as they should.
2658 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2659 correctly. (thanks to Pierre Mai)
2660 * minor incompatible change: The --noprogrammer option is deprecated
2661 in favor of the new --disable-debugger option, which is very similar.
2662 (The major difference is that it takes effect at a slightly different
2663 time at startup, causing handling of errors in --sysinit and
2664 --userinit files will be affected differently.) The
2665 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2666 been added to allow this functionality to be controlled from ordinary
2667 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2668 maintainers, who might want to run non-interactive scripts to
2669 build SBCL cores which will later be used interactively.)
2670 * minor incompatible change: The LOAD function no longer, when given
2671 a wild pathname to load, loads all files matching that pathname.
2672 Instead, an error of type FILE-ERROR is signalled.
2674 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2675 * bug 147 fixed: The compiler preserves its block link/count
2676 invariants more correctly now so that it doesn't crash. (thanks
2678 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2680 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2681 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2682 no-value-for-this-character as NIL (as specified by ANSI).
2683 * HOST-NAMESTRING on physical pathnames now returns a string that is
2684 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2685 (thanks to Christophe Rhodes)
2686 * The Alpha port handles icache flushing more correctly. (thanks to
2688 * More progress has been made toward bootstrapping under CLISP. (thanks
2689 to Christophe Rhodes)
2690 * The fasl file format has changed again, because dynamic loading
2691 on OpenBSD (which has non-ELF object files) motivated some cleanups
2692 in the way that foreign symbols are transformed and passed around.
2693 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2694 is no longer treated as whitespace by the reader, but instead as
2695 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2696 |A
\7fB|, instead of A as it used to.
2698 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2699 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2700 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2701 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2702 this as of 0.7.1.45, but was left out of the previous news section
2703 (thanks to Dan Barlow)
2704 * SBCL now runs on the Solaris operating system on SPARC architectures
2705 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2706 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2707 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2708 * SPARC backend cleanups, allowing builds of cores optimized for V8
2709 and V9 SPARCS, and also emission of code targeted to a particular
2710 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2712 * SBCL is closer to bootstrapping under CLISP, thanks to various
2713 fixes by Christophe Rhodes.
2714 * The fasl file format has changed again, to allow the compiler's
2715 INFO database to support symbol macros.
2716 * The user manual (in doc/) is formatted into HTML more nicely.
2717 (thanks to coreythomas)
2718 * The system is smarter about SUBTYPEP relationships, especially
2719 those involving NOT types (including types such as ATOM which are
2720 represented internally using NOT types). Thus SUBTYPEP is less
2721 likely to return (VALUES NIL NIL) in general, and in particular
2722 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2724 * The fasl file format has changed again, because the internal
2725 representation of types now includes a new slot to support the new
2726 SUBTYPEP-of-NOT-types logic.
2727 * (not a change in the main branch of SBCL, but a related prototype
2728 which can hopefully be merged into the main branch of SBCL in the
2729 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2730 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2731 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2732 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2733 dispatch macro character combinations. (thanks to Alexey Dejneka)
2734 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2735 that superficially look like logical namestrings correctly.
2736 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2738 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2739 default supplied-p) for &optional and &key arguments. (thanks to
2742 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2743 * incompatible change: The compiler is now less aggressive about
2744 tail call optimization, doing it only when (> SPACE DEBUG) or
2745 (> SPEED DEBUG). (This is an incompatible change because there are
2746 programs which relied on the old CMU-CL-style behavior to optimize
2747 away their unbounded recursion which will now die of stack overflow.)
2748 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2749 for non-GENCGC systems has been increased to 20M (since that
2750 seems much closer to the likely performance optimum for modern
2751 systems than the old 4M value was)
2752 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2753 and *DEBUG-PRINT-LEVEL*
2754 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2755 of CMU CL's support for SPARC, and various endianness and other
2756 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2757 * new syntactic sugar for the Unix command line: --load foo.bar is now
2758 an alternate notation for --eval '(load "foo.bar")'.
2760 ** The system now detects stack overflow and handles it gracefully,
2761 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2762 optimization settings. (This is a good thing in general, and
2763 its introduction in this version should be particularly timely
2764 for anyone whose code fails because of suppression of tail
2766 ** The system now hunts for the C variable "environ" in a more
2767 devious way, to avoid segfaults when the C library version differs
2768 between compile time and run time. (thanks to Christophe Rhodes)
2769 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2770 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2771 ** The compiler no longer issues bogus style warnings for undefined
2772 classes in the same source file as the DEFCLASSes which defined
2773 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2775 ** fixes in CONDITION class precedence list for undefined function
2776 errors (thanks to Alexei Dejneka)
2777 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2778 correctly. (thanks to Dan Barlow)
2779 ** portability fixes aiming at bootstrapping under CLISP (thanks
2780 to Dave McDonald and Christophe Rhodes)
2781 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2782 ** fixes in type translation and and type inference (thanks to
2784 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2785 ** various fixes in the new ports (thanks to Dan Barlow)
2786 * several changes related to debugging:
2787 ** suppression of tail recursion, as noted above
2788 ** stack overflow detection, as noted above
2789 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2790 is now the default. (For some time encapsulation has been more
2791 reliable than the breakpoint-based :ENCAPSULATE NIL
2792 implementation, at least on X86 systems; and I just noticed that
2793 encapsulation also seems closer to the spirit of the ANSI
2796 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2798 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2799 up properly again. (There was a packaging bug in 0.7.0 which
2800 left their definitions in SB-SYS::LOAD-FOREIGN and
2801 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2802 vital for most things which interface to C-level interfaces,
2803 like extensions working with sockets or databases or
2804 Perl-compatible regexes or whatever, and the need to fix
2805 this bug is the main reason that 0.7.1 was released so
2807 ** DEFGENERIC is now choosier about the methods it redefines, so that
2808 reLOADing a previously-LOADed file containing DEFGENERICs does
2809 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2810 cycle now works as it should. (thanks to Alexey Dejneka)
2811 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2812 fixed by Christophe Rhodes. (He actually submitted this patch
2813 months ago, and I delayed until after 0.7.0.)
2814 ** Bug 111 (internal compiler confusion about runtime checks on
2815 FUNCTION types) was fixed by Alexey Dejneka.
2816 * Some internal cleanups (getting rid of variables which aren't
2817 needed now that the byte interpreter is gone) caused the fasl
2818 file format number to change again.
2820 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2821 * major incompatible change: The default fasl file extension, i.e. the
2822 default extension for files produced by COMPILE-FILE, has changed
2823 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2825 ** There are many changes in the implementation of the compiler.
2826 SBCL is now essentially a compiler-only implementation of ANSI
2827 Common Lisp. EVAL still "interprets" a few special cases, but
2828 almost all the interesting cases are handled by creating
2829 a LAMBDA expression, calling COMPILE on it, then calling
2830 FUNCALL on the result.
2831 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2832 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2833 Since the code is newer, there might still be some new bugs
2834 (though not as many as before Martin Atzmueller's fixes:-). But
2835 the new code is substantially simpler and clearer, and hopefully
2836 any remaining bugs will be simpler, less fundamental, and more
2837 fixable then the bugs in the old code.
2838 ** The revised compiler is still a little unsteady on its feet.
2840 *** The debugging information it produces (particularly the names
2841 of FUNCTION objects) is sometimes much less useful than what
2842 the old compiler produced.
2843 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2844 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2845 within a MACROLET) has been temporarily weakened.
2846 ** There are new compiler optimizations for various functions:
2847 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2848 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2849 *** the math functions TRUNCATE, FLOOR, and CEILING
2850 *** the function-of-all-trades COERCE
2851 Mostly these should be transparent, but there's one
2852 potentially-annoying problem (bug 117): when the compiler
2853 inline-expands a function and does type analysis on the result,
2854 it can create control paths which have type mismatches, and
2855 when it can't prove that those control paths aren't taken,
2856 it will issue WARNINGs about the type mismatches. This is
2857 a particular problem in practice for the new sequence functions.
2858 It's not clear how this should be fixed, and for now, a
2859 workaround is given in the entry for 117 in the BUGS file.
2860 ** (Because of the interaction between the two previous items --
2861 occasional inlining problems and new inline expansions -- some
2862 of the new sequence function optimizations won't really kick in
2863 completely until debugging information, and then inlining, are
2864 straightened out in some future version.)
2865 * minor incompatible changes:
2866 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2867 DIRECTORY no longer implicitly promotes NIL slots of its
2868 pathname argument to :WILD. In particular, when you ask for the
2869 contents of a directory (which you used to be able to do without
2870 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2871 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2872 ** changes in behavior that ANSI explicitly defines to be
2873 implementation dependent:
2874 *** The new compiler-only implementation still conforms with ANSI,
2875 but acts a little different than before. Besides the obvious
2876 changes in performance tradeoffs (that the cost per form passed
2877 to EVAL has gone up, and the cost per form executed by EVAL
2878 has gone down), the behavior of the system changes a little
2879 because there are no longer any interpreted function objects.
2880 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2881 e.g. doing COMPILE on the output of interactive DEFUN is
2883 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2885 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2886 has changed from (:CL) to NIL.
2887 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2888 e.g. #\Newline and #\Tab, don't have names specified in the
2889 ANSI Common Lisp standard, is now based on their ASCII symbolic
2890 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2891 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2892 are no longer used for output.
2893 ** changes in internal implementation constants:
2894 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2895 4 million. (If your application spends a lot of time GCing and
2896 you have a lot of RAM, you might want to experiment with
2897 increasing it even more.)
2898 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2899 However, almost all old code should still continue to work without
2900 immediate update, as SB-C-CALL is now a (deprecated) nickname
2902 ** Old operator names in the style DEF-FOO are now deprecated in
2903 favor of new corresponding names DEFINE-FOO, for consistency with
2904 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2905 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2906 internal symbols, but a few supported extensions like
2907 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2908 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2909 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2910 etc. as you get deeper into recursive calls to the debugger
2911 command loop, instead of the old "5]", "5]]", "5]]]"
2912 sequence. (I was motivated to do this when squabbles between
2913 ILISP and SBCL left me very deeply nested in the debugger. In the
2914 short term, this change will probably provoke more ILISP/SBCL
2915 squabbles, but hopefully it will be an improvement in the long run.)
2916 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2917 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2918 function, since declaiming return types involving aliens is
2919 (1) annoyingly messy to do by hand and (2) vital to efficient
2920 compilation of code which calls such functions.
2921 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2922 longer reexported by the SB-EXT package. They're solely useful
2923 for alien code, so it seems more logical that you should get
2924 them from the SB-ALIEN package, not in SB-EXT.
2925 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2926 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2927 features. Instead, the code that they used to control is always
2928 built into the system.
2929 * many other bug fixes
2930 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2931 advantage of the new EVAL-WHEN stuff and to clean them up in
2932 general, and they are now more ANSI-compliant in a number of
2933 ways. Martin Atzmueller is responsible for a lot of this.
2934 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2936 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2937 *** correct ERROR type for various file operations
2938 *** some fixes for Lisp streams
2939 *** DEFMETHOD syntax checking
2940 *** changing old weird representation of debug information as
2941 strings (which, among their other deficiencies, don't transform
2942 correctly when you rename packages, and don't change their
2943 print representation when you change things like *PACKAGE*
2944 and *PRINT-LENGTH*) to symbols and lists of symbols
2945 He also made several improvements and fixed several bugs in DESCRIBE.
2946 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2948 *** misbehavior of WRITE-STRING/WRITE-LINE
2949 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2950 and several other LOOP problems as well
2951 *** DIRECTORY when similar filenames are present
2952 *** DEFGENERIC with :METHOD options
2953 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2954 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2955 *** argument ordering in FIND with :TEST option
2956 *** mishandled package designator argument in APROPOS-LIST
2957 *** various problems in the backquote readmacro
2958 *** a bug in APROPOS
2959 *** probably some others that I'm not describing very well here,
2960 since the CVS log documents them by reference to sbcl-devel
2961 messages, and the SourceForge archives aren't working well.:-(
2962 ** Dan Barlow improved the Alpha port (and is making progress on the
2963 PPC port, for those of you who think different).
2964 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2965 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2966 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2967 continues to work on the SPARC port (for those of you in a position
2968 to look down upon our little PC-compatible boxes from a great height).
2969 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2970 and uses that copy, rather than the current dynamic value, when
2971 it's trying to decide whether to truncate output. Thus e.g.
2972 (let ((*print-lines* 50))
2973 (pprint-logical-block (stream nil)
2975 (let ((*print-lines* 8))
2976 (print (aref possiblybigthings i) stream)))))
2977 should now truncate the logical block only at 50 lines, instead of
2978 often truncating it at 8 lines, as it did before.
2979 * The doc/cmucl/ directory, containing old CMU CL documentation
2980 from the time of the fork, is no longer part of the base system.
2981 SourceForge has shut down its anonymous FTP service, and with it
2982 my original plan for distributing the old CMU CL documentation
2983 there. For now, if you need these files you can download an old
2984 SBCL source release and extract them from it.
2985 * The fasl file version number changed again, for dozens of reasons,
2986 some of which are apparent above.
2988 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2989 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2990 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2991 patch, so that DISASSEMBLE output is much nicer.
2992 * The code in the SB-PROFILE package now seems reasonably stable.
2993 I still haven't decided what the final interface should look like
2994 (I'd like PROFILE to interact cleanly with TRACE, since both
2995 facilities use function encapsulation) but if you have a need
2996 for profiling now, you can probably use it successfully with
2997 the current CMU-CL-style interface.
2998 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2999 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3000 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3001 link now returns the dangling link itself, and for similar
3002 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3003 link itself. (In these cases the old code signalled an error and
3004 looped endlessly, respectively.) Thus, DIRECTORY now works even
3005 in the presence of dangling and cyclic symbolic links.
3006 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3007 is now a supported extension again, since the consensus on
3008 sbcl-devel was that it can be useful for ordinary development
3009 work, not just for debugging SBCL itself.
3010 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3011 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3012 that currently-defined functions might be redefined later with
3013 different return types.
3014 * Hash tables can be printed readably, as inspired by CMU CL code
3015 of Eric Marsden and SBCL code of Martin Atzmueller.
3016 * better error handling in CLOS method combination, thanks to
3017 Martin Atzmueller porting Pierre Mai's CMU CL patches
3018 * more overflow fixes for >16Mbyte I/O buffers
3019 * A bug in READ has been fixed, so that now a single Ctrl-D
3020 character suffices to cause end-of-file on character streams.
3021 In particular, now you only need one Ctrl-D at the command
3022 line (not two) to exit SBCL.
3023 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3025 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3026 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3027 does the right thing.
3028 * The implementation of some type tests, especially for CONDITION
3029 types, is now tidier and maybe faster, due to CMU CL code
3030 originally by Douglas Crosher, ported by Martin Atzmueller.
3031 * Some math functions have been fixed, and there are new
3032 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3033 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3034 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3035 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3036 likely to be built into sbcl-0.7.0.)
3037 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3038 CL, ported to SBCL by Martin Atzmueller)
3039 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3040 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3041 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3042 * There's a new slam.sh hack to shorten the edit/compile/debug
3043 cycle for low-level changes to SBCL itself, and a new
3044 :SB-AFTER-XC-CORE target feature to control the generation of
3045 the after-xc.core file needed by slam.sh.
3046 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3047 COMPILE-FILE is no longer supported, so that now every function
3048 gets an entry point, so that block compilation looks a little
3049 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3050 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3051 returns the number of bytes consed since the system started,
3052 rather than the number consed since the first time the function
3053 was called. (The new definition parallels ANSI functions like
3054 CL:GET-INTERNAL-RUN-TIME.)
3055 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3056 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3057 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3058 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3059 * Fasl file version numbers are now independent of the target CPU,
3060 since historically most system changes which required version
3061 number changes have affected all CPUs equally. Similarly,
3062 the byte fasl file version is now equal to the ordinary
3065 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3066 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3067 is no longer recognized. I apologize for this, because it was
3068 listed in SB-EXT as a supported extension, but I found that
3069 its existing behavior was poorly specified, as well as incorrectly
3070 specified, and it looked like too much of a mess to straighten it
3071 out. I have enough on my hands trying to get ANSI stuff to work..
3072 * many patches ported from CMU CL by Martin Atzmueller, with
3073 half a dozen bug fixes in pretty-printing and the debugger, and
3074 half a dozen others elsewhere
3075 * fixed bug 13: Floating point infinities are now supported again.
3076 They might still be a little bit flaky, but thanks to bug reports
3077 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3078 as flaky as they were.
3079 * The --noprogrammer command line option is now supported. (Its
3080 behavior is slightly different in detail from what the old man
3081 page claimed it would do, but it's still appropriate under the
3082 same circumstances that the man page talks about.)
3083 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3084 are now supported, and enabled by default. Thus, the compiler can
3085 handle many floating point and complex operations much less
3086 inefficiently. (Thus e.g. you can implement a complex FFT
3088 * The compiler now detects type mismatches between DECLAIM FTYPE
3089 and DEFUN better, and implements CHECK-TYPE more correctly, and
3090 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3091 thanks to patches from Martin Atzmueller.
3092 * various fixes to make the cross-compiler more portable to
3093 ANSI-conforming-but-different cross-compilation hosts (notably
3094 Lispworks for Windows, following bug reports from Arthur Lemmens)
3095 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3096 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3097 fixed thanks to Pierre Mai's CMU CL patches.
3098 * fixes to keep the system from overflowing internal counters when
3099 it tries to use i/o buffers larger than 16M bytes
3100 * fixed bug 45a: Various internal functions required to support
3101 complex special functions have been merged from CMU CL sources.
3102 (When I was first setting up SBCL, I misunderstood a compile-time
3103 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3104 * improved support for type intersection and union, fixing bug 12
3105 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3106 more obscure bugs as well
3107 * some steps toward byte-compiling non-performance-critical
3108 parts of the system, courtesy of patches from Martin Atzmueller
3109 * Christophe Rhodes has made some debian packages of sbcl at
3110 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3111 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3112 stable, but are nonetheless usable. When he's ready, I'd be happy
3113 to add them to the SourceForge "File Releases" section. (And if
3114 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3115 * new fasl file format version number (because of changes in
3116 internal representation of (OR ..) types to accommodate the new
3117 support for (AND ..) types, among other things)
3119 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3120 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3122 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3124 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3125 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3126 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3127 * DESCRIBE now works on structure objects again.
3128 * Most function call argument type mismatches are now handled as
3129 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3130 know whether the function will be redefined before the call is
3131 executed. (The compiler could flag local calls with full WARNINGs,
3132 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3133 it doesn't keep track of enough information to know whether calls
3134 are local in this sense.)
3135 * Compiler output is now more verbose, with messages truncated
3136 later than before. (There should be some supported way for users
3137 to override the default verbosity, but I haven't decided how to
3138 provide it yet, so this behavior is still controlled by the internal
3139 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3140 src/compiler/ir1util.lisp.)
3141 * Fasl file format version numbers have increased again, because
3142 support for the Gray streams extension changes the layout of the
3143 system's STREAM objects.
3144 * The Gray subclassable streams extension now works, thanks to a
3145 patch from Martin Atzmueller.
3146 * The full LOAD-FOREIGN extension (not just the primitive
3147 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3148 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3149 but like most other programs, it defaults to copying the Unix
3150 environment from the original process instead of starting the
3151 new process in an empty environment.
3152 * Extensions which manipulate the Unix environment now support
3153 an :ENVIRONMENT keyword option which doesn't smash case or
3154 do other bad things. The CMU-CL-style :ENV option is retained
3155 for porting convenience.
3156 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3157 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3159 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3161 * A patch from Martin Atzmueller seems to have solved the SIGINT
3162 problem, and as far as we know, signal-handling now works cleanly.
3163 (If you find any new bugs, please report them!)
3164 * The system no longer defaults Lisp source file names to types
3165 ".l", ".cl", or ".lsp", but only to ".lisp".
3166 * The compiler no longer uses special default file extensions for
3167 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3168 seems to expect a single default extension for all compiled code,
3169 and there's no compelling reason to try to stretch the standard
3170 to allow two different extensions.) Instead, byte-compiled files
3171 default to the same extension as native-compiled files.
3172 * Fasl file format version numbers have increased again, because
3173 a rearrangement of internal implementation packages made some
3174 dumped symbols in old fasl files unreadable in new cores.
3175 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3176 many fewer weird special cases.
3177 * Bug #17 (differing COMPILE-FILE behavior between logical and
3178 physical pathnames) has been fixed, and some related misbehavior too,
3179 thanks to a patch from Martin Atzmueller.
3180 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3181 by Tim Moore, ported to SBCL by Martin Atzmueller.
3182 * Martin Atzmueller fixed several filesystem-related problems,
3183 including bug #36, in part by porting CMU CL patches, which were
3184 written in part by Paul Werkowski.
3185 * More compiler warnings in src/runtime/ are gone, thanks to
3186 more patches from Martin Atzmueller.
3187 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3190 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3192 * DESCRIBE now works on CONDITION objects.
3193 * The debugger now handles errors which arise when trying to print
3194 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3196 * The build system now uses an additional file, customize-target-features.lisp,
3197 to allow local modifications to the target *FEATURES* list. (The point of
3198 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3199 debugging features enabled, without having to worry about propagating it
3200 into everyone's system when I do a "cvs update".) When no
3201 customize-target-features.lisp file exists, the target *FEATURES* list
3202 should be constructed the same way as before.
3203 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3204 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3205 warn about behavior which is undefined under the ANSI spec. Note: This
3206 is specified by ANSI, but it's not very popular with programmers.
3207 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3208 macro in the SBCL sources for an example of a workaround which you
3209 might use to make portable ANSI-standard code which does what you want.
3210 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3211 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3212 when it's used as a non-toplevel form. (This is required in order
3213 to implement the DEFCONSTANT-EQX macro.)
3214 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3215 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3216 funny things, due to bugs in the implementation of EVAL-WHEN
3217 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3218 non-toplevel DEFCONSTANTs are uncommon.)
3219 * The core file version number and fasl file version number have been
3220 incremented, because the old noncompliant DEFCONSTANT behavior involved
3221 calling functions which no longer exist, and because I also took the
3222 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3223 * fixed bug 1 (error handling before read-eval-print loop starts), and
3224 redid debugger restarts and related debugger commands somewhat while
3226 ** The QUIT debugger command is gone, since it did something
3227 rather different than the SB-EXT:QUIT command, and since it never
3228 worked properly outside the main toplevel read/eval/print loop.
3229 Invoking the new TOPLEVEL restart provides the same functionality.
3230 ** The GO debugger command is also gone, since you can just invoke
3231 the CONTINUE restart directly instead.
3232 ** The TOP debugger command is also gone, since it's redundant with the
3233 FRAME 0 command, and since it interfered with abbreviations for the
3235 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3237 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3238 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3239 some porting work by Martin Atzmueller)
3240 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3241 with a boatload of patches which he ported to SBCL. Now that those
3243 ** The system tries to make sure that its low-priority messages
3244 are prefixed by semicolons, to help people who like to use
3245 syntax highlighting in their ILISP buffer. (This patch
3246 was originally due to Raymond Toy.)
3247 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3248 patches originally written by Raymond Toy.
3249 ** The compiler understands coercion between single-value and
3250 multiple-VALUES type expressions better, getting rid of some very
3251 weird behavior, thanks to patches originally by Robert MacLachlan
3252 and Douglas Crosher.
3253 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3254 lambda lists, thanks to a patch originally by Pierre Mai.
3255 ** The system no longer bogusly warns about "abbreviated type
3257 ** The compiler gets less confused by inlining and RETURN-FROM,
3258 thanks to some patches originally by Tim Moore.
3259 ** The system no longer hangs when dumping circular lists to fasl
3260 files, thanks to a patch originally from Douglas Crosher.
3261 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3262 undefined function error.
3263 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3264 in structure slot initforms) for now, documented workaround instead:-|
3265 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3266 * fixed bug 5: added stubs for various Gray stream functions called
3267 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3268 installed, at least appropriate type errors are generated
3269 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3270 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3271 consistently in DEFMETHOD forms.
3272 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3273 it doesn't seem to affect SBCL after all
3274 * The C runtime system now builds with better optimization and many
3275 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3277 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3279 * The system is now under CVS at SourceForge (instead of the
3280 CVS repository on my home machine).
3281 * The new signal handling code has been tweaked to treat register
3282 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3283 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3284 downstream, e.g. in debug-int.lisp, has implicit dependencies
3285 on the unsignedness of integer representation of machine words,
3286 and that caused the system to bomb out with infinite regress
3287 when trying to recover from type errors involving signed values,
3288 e.g. (BUTLAST '(1 2 3) -1).)
3289 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3290 (This was one of the bugs Peter Van Eynde reported back in July.)
3291 * The system now uses code inspired by Colin Walters' O(N)
3292 implementation of MAP (from the cmucl-imp@cons.org mailing
3293 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3294 inline the MAP operation, and there is more than one
3295 sequence argument to the MAP call (so that it can't just
3296 do ETYPECASE once and for all based on the type of the
3297 single sequence argument). (The old non-inline implementation
3298 of the general M-argument sequence-of-length-N case required
3299 O(M*N*N) time when any of the sequence arguments were LISTs.)
3300 * The QUIT :UNIX-CODE keyword argument has been renamed to
3301 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3302 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3304 * Raymond Wiker's patches to port dynamic loading from Linux to
3305 FreeBSD have been added.
3306 * The BUGS file is now more nearly up to date, thanks in large part
3307 to Martin Atzmueller's review of it.
3308 * The debugger now flushes standard output streams before it begins
3309 its output ("debugger invoked" and so forth).
3310 * The core version number and fasl file version number have both
3311 been incremented, because of incompatible changes in the layout
3313 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3314 used to not be called for a saved Lisp image.)
3315 * Martin Atzmueller's version of a patch to fix a compiler crash,
3316 as posted on sbcl-devel 13 September 2000, has been installed.
3317 * Instead of installing Martin Atzmueller's patch for the
3318 compiler transform for SUBSEQ, I deleted the compiler transform,
3319 and transforms for some similar consing operations.
3320 * A bug in signal handling which kept TRACE from working on OpenBSD
3322 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3323 away by constant folding
3324 * The system now defines its address space constants in one place
3325 (in the Lisp sources), and propagates them automatically elsewhere
3326 (through GENESIS and the sbcl.h file). Therefore, patching the
3327 address map is less unnecessarily tedious and error-prone. The
3328 Lisp names of address space constants have also been systematized.
3329 * CVS tags like dollar-Header-dollar have been removed from
3330 the sources, because they have never saved me trouble and
3331 they've been source of trouble working with patches and other
3332 diff-related operations.
3333 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3334 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3336 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3338 * The system has been ported to OpenBSD.
3339 * The system now compiles with a simple "sh make.sh" on the systems
3340 that it's supported on. I.e., now you no longer need to tweak
3341 text in the target-features.lisp-expr and symlinks in src/runtime/
3342 by hand, the make.sh takes care of it for you.
3343 * The system is no longer so grossly inefficient when compiling code
3344 involving vectors implemented as general (not simple) vectors (VECTOR T),
3345 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3346 which dares to use the various sequence functions on non-simple
3347 vectors, takes less of a performance hit.
3348 * There is now a primitive type predicate VECTOR-T-P
3349 to test for the (VECTOR T) type, so that e.g.
3350 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3351 can now be compiled with some semblance of efficiency. (The old code
3352 turned the type declaration into a full call to %TYPEP at runtime!)
3353 * AREF on (VECTOR T) is still not fast, since it's still compiled
3354 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3355 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3356 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3357 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3358 without making full calls to SUBTYPEP at runtime.
3359 (Some analogous efficiency issues for non-simple vectors specialized to
3360 element types other than T, or for non-simple multidimensional arrays,
3361 have not been addressed. They could almost certainly be handled the
3362 same way if anyone is motivated to do so.)
3363 * The changes in array handling break binary compatibility, so
3364 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3365 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3366 instead of (VALUES T T).
3367 * By following the instructions that Dan Barlow posted to sbcl-devel
3368 on 2 July 2000, I was able to enable primitive dynamic object
3369 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3370 functionality is not implemented (since it calls ld to resolve
3371 library references automatically, requiring RUN-PROGRAM for its
3372 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3373 try to resolve library references) is now supported.
3374 * The system now flushes the standard output streams when it terminates,
3375 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3376 them at several other probably-convenient times, e.g. in each pass of
3377 the toplevel read-eval-print loop, and after evaluating a form given
3378 as an "--eval" command-line option. (These changes were motivated by a
3379 discussion of stream flushing issues on cmucl-imp in August 2000.)
3380 * The source transform for TYPEP of array types no longer assumes
3381 that an array whose element type is a not-yet-defined type
3382 is implemented as an array of T, but instead punts, so that the
3383 type will be interpreted at runtime.
3384 * There is now some support for cross-compiling in make.sh: each of
3385 the phases of make.sh has its own script. (This should be transparent
3386 to people doing ordinary, non-cross-compile builds.)
3387 * Since my laptop doesn't have hundreds of megabytes of memory like
3388 my desktop machine, I became more motivated to do some items on
3389 my to-do list in order to reduce the size of the system a little:
3390 ** Arrange for various needed-only-at-cold-init things to be
3391 uninterned after cold init. To support this, those things have
3392 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3393 symbols with such names are now uninterned after cold init).
3394 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3395 fasl files for cold load.
3396 ** Remove the old compiler structure pooling code (which used to
3397 be conditional on the target feature :SB-ALLOC) completely.
3398 ** Redo the representation of some data in cold init to be more compact.
3399 (I also looked into supporting byte compiled code at bootstrap time,
3400 which would probably reduce the size of the system a lot, but that
3401 looked too complicated, so I punted for now.)
3402 * The maximum signal nesting depth in the src/runtime/ support code has
3403 been reduced from 4096 to 256. (I don't know any reason for the very
3404 large old value. If the new smaller value turns out to break something,
3405 I'll probably just bump it back up.)
3406 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3408 * Many, many bugs reported by Peter Van Eynde have been added to
3409 the BUGS list; some have even been fixed.
3410 * While enabling dynamic object file loading, I tried to make the
3411 code easier to understand, renaming various functions and variables
3412 with less ambiguous names, and changing some function calling
3413 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3414 * While trying to figure out how to do the OpenBSD port, I tried to
3415 clean up some of the code in src/runtime/. In particular, I dropped
3416 support for non-POSIX signal handling, added various comments,
3417 tweaked the code to reduce the number of compilation warnings, and
3418 renamed some files to increase consistency.
3419 * To support the new automatic configuration functionality in make.sh,
3420 the source file target-features.lisp-expr has been replaced with the
3421 source file base-target-features.lisp-expr and the machine-generated
3422 file local-target-features.lisp-expr.
3423 * fixed a stupid quoting error in make.sh so that using CMU CL
3424 "lisp -batch" as cross-compilation host works again
3426 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3428 * DESCRIBE no longer tries to call itself recursively to describe
3429 bound/fbound values, so that it no longer fails on symbols which are
3430 bound to themselves (like keywords, T, and NIL).
3431 * DESCRIBE now works on generic functions.
3432 * The printer now prints less-screwed-up representations of closures
3433 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3434 * A private symbol is used instead of the :EMPTY keyword previously
3435 used to mark empty slots in hash tables. Thus
3436 (DEFVAR *HT* (MAKE-HASH-TABLE))
3437 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3438 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3439 now does what ANSI says that it should. (You can still get
3440 similar noncompliant behavior if bang on the hash table
3441 implementation with all the symbols you get back from
3442 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3443 This breaks binary compatibility, since tests for equality to
3444 :EMPTY are wired into things like the macroexpansion of
3445 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3447 * There's now a minimal placeholder implementation for CL:STEP,
3448 as required by ANSI.
3449 * An obscure bug in the interaction of the normal compiler, the byte
3450 compiler, inlining, and structure predicates has been patched
3451 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3452 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3454 * Missing ordinary arguments in a macro call are now detected even
3455 when the macro lambda list contains &KEY or &REST.
3456 * The debugger no longer complains about encountering the top of the
3457 stack when you type "FRAME 0" to explicitly instruct it to go to
3458 the top of the stack. And it now prints the frame you request even
3459 if it's the current frame (instead of saying "You are here.").
3460 * As specified by ANSI, the system now always prints keywords
3461 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3463 * The default initial SIZE of HASH-TABLEs is now smaller.
3464 * Type information from CLOS class dispatch is now propagated
3465 into DEFMETHOD bodies, so that e.g.
3466 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3468 is now basically equivalent to
3469 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3470 (DECLARE (TYPE SINGLE-FLOAT X))
3472 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3473 operation, without having to do run-time type dispatch.
3474 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3475 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3476 * Since I don't seem to be making big file reorganizations very often
3477 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3478 is overflowing my ability to conveniently back them up), I've finally
3479 checked the system into CVS. (The CVS repository is on my home system,
3480 not at SourceForge -- putting it on SourceForge might come later.)
3481 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3482 high-level GC-NOTIFY-FOO functions send their output. (There's
3483 still very little control of where low-level verbose GC functions
3484 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3485 less than it used to -- the GC-NOTIFY-FOO functions are now under
3486 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3487 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3488 in only one place in the source code, and propagates it automatically
3489 everywhere that it's needed. Thus e.g. when I bump the version from
3490 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3491 * The C source files now include boilerplate legalese and documentation
3492 at the head of each file (just as the Lisp source files already did).
3493 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3494 to his page will be replaced with a link to his new CLiki service.
3496 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3498 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3499 * The build process now looks for GNU make under the default name "gmake",
3500 instead of "make" as it used to. If GNU make is not available as "gmake"
3501 on your system, you can change this default behavior by setting the
3502 GNUMAKE environment variable.
3503 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3504 can build without error under CMU CL.
3506 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3508 * There is now a partial SBCL user manual (with some new text and some
3509 text cribbed from the CMU CL manual).
3510 * The beginnings of a profiler have been added (starting with the
3511 CMU CL profiler and simplifying and cleaning up). Eventually the
3512 main interface should be through the TRACE macro, but for now,
3513 it's still accessed through vaguely CMU-CL-style functions and macros
3514 exported from the package SB-PROFILE.
3515 * Some problems left over from porting CMU CL to the new
3516 cross-compilation bootstrap process have been cleaned up:
3517 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3518 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3519 part when getting rid of the compiler *BACKEND* stuff.)
3520 ** The value of *NULL-TYPE* was screwed up, because it was
3521 being initialized before the type system knew the final
3522 definition of the 'NULL type. This screwed up several key
3523 optimizations in the compiler, causing inefficiency in all sorts
3524 of places. (I found it because I wanted to understand why
3525 GET-INTERNAL-RUN-TIME was consing.)
3526 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3527 PROCLAIM FTYPE information. Unfortunately this broke binary
3528 compatibility again, since now the forms output by DEFGENERIC
3529 to refer to functions which didn't exist in 0.6.3.
3530 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3531 can use the new (as of 0.6.3) transform for SOME into MAP into
3533 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3534 values to (INTEGER 0 1000000), so that the time code will no longer
3535 occasionally get blown up by Linux returning 1000000 microseconds
3536 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3537 its output conform to the ANSI spec. (Alas, this makes its output
3538 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3539 * A full call to MAP NIL with a single sequence argument no longer conses.
3540 * fixes to problems pointed out by Martin Atzmueller:
3541 * The manual page no longer talks about multiprocessing as though
3542 it were currently supported.
3543 * The ILISP support patches have been removed from the distribution,
3544 because as of version 5.10.1, ILISP now supports SBCL without us
3545 having to maintain patches.
3546 * added a modified version of Raymond Toy's recent CMU CL patch for
3547 EQUALP comparison of HASH-TABLE
3549 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3551 * The system still can't cross-compile itself with
3552 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3553 entails), but at least it can compile more of itself that way
3554 than it used to be able to, and various buglets which were uncovered
3555 by trying to cross-compile itself that way have now been fixed.
3556 * This release breaks binary compatibility again. This time
3557 at least I've incremented the FASL file format version to 2, so that the
3558 problem can be detected reliably instead of just causing weird errors.
3559 * various new style warnings:
3560 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3561 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3562 ** using the lexical binding of a variable named in the *FOO* style
3563 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3564 as specified by ANSI.
3565 * *RANDOM-STATE* is no longer automatically initialized from
3566 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3567 default behavior of the system is to repeat its behavior every time
3568 it's run. If you'd like to change this behavior, you can always
3569 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3570 old convention there was no comparably easy way to get the system to
3571 repeat its behavior every time it was run.
3572 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3573 FTYPE declarations has been removed, in favor of their ANSI
3574 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3575 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3576 the types of their sequence arguments can be determined at compile time.
3577 This is done through a new open code expansion for MAP which eliminates
3578 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3579 argument types can be determined at compile time.
3580 * The optimizer now transforms COERCE into an identity operation when it
3581 can prove that the coerced object is already of the correct type. (This
3582 can be a win for machine generated code, including the output of other
3583 optimization transforms, such as the MAP transform above.)
3584 * Credit information has been moved from source file headers into CREDITS.
3585 * Source file headers have been made more standard.
3586 * The CASE macro now compiles without complaining even when it has
3589 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3591 * (Note that the way that the PCL macroexpansions were rewritten
3592 to accommodate the change in DEFGENERIC below breaks binary
3593 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3594 not run under sbcl-0.6.2. Once we get out of alpha releases,
3595 i.e. hit release 1.0.0, we'll probably try to maintain binary
3596 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3597 and sbcl-1.4.4. Until then, however, it might be fairly common
3598 for maintenance releases to break binary compatibility.)
3599 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3601 * The reporting of unhandled signals has been changed to print some
3602 explanatory text as well as the report form. (Previously only
3603 the report form was printed.)
3604 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3605 it defines, so that the compiler no longer issues undefined function
3606 warnings for compiled-but-not-yet-loaded generic functions.
3607 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3608 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3609 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3610 section of the ANSI spec are supported.
3611 * The "" nickname for the "KEYWORD" package has been removed.
3612 The reader still handles symbol tokens which begin with a package marker
3613 as keywords, but it doesn't expose its mechanism for doing so in the
3614 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3615 * The system now issues STYLE-WARNINGs for contradictory TYPE
3616 proclamations. (Warnings for contradictory FTYPE proclamations would
3617 be nice too, but those can't be done usefully unless the type system
3618 is made smarter about FUNCTION types.)
3619 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3620 systematized, so that "*target-*.lisp is supposed to exist only on the
3621 target and imply that there's a related file which exists on the
3622 host, and *host-*.lisp is supposed to exist only on the host and imply
3623 that there's a related file which exists on the target. This involves a
3624 lot of renaming. Hopefully the acute confusion caused by the renaming
3625 will be justified by the reduction in chronic confusion..
3626 ** runtime-type.lisp -> early-target-type.lisp
3627 ** target-type.lisp -> late-target-type.lisp
3628 ** early-host-format.lisp -> early-format.lisp
3629 ** late-host-format.lisp -> late-format.lisp
3630 ** host-error.lisp -> misc-error.lisp
3631 ** early-error.lisp -> early-target-error.lisp
3632 ** late-error.lisp -> late-target-error.lisp
3633 ** host-defboot.lisp -> early-defboot.lisp
3634 ** code/misc.lisp -> code/target-misc.lisp
3635 ** code/host-misc.lisp -> code/misc.lisp
3636 ** code/numbers.lisp -> code/target-numbers.lisp
3637 ** code/early-numbers.lisp -> numbers.lisp
3638 ** early-host-type.lisp -> early-type.lisp
3639 ** late-host-type.lisp -> late-type.lisp
3640 ** host-typep.lisp -> typep.lisp
3641 ** load.lisp -> target-load.lisp
3642 ** host-load.lisp -> load.lisp
3643 ** host-disassem.lisp -> disassem.lisp
3644 ** host-insts.lisp -> insts.lisp
3645 ** byte-comp.lisp -> target-byte-comp.lisp
3646 ** host-byte-comp.lisp -> byte-comp.lisp
3647 ** host-signal.lisp -> signal.lisp
3648 ** host-defstruct.lisp -> defstruct.lisp
3649 ** late-target-type.lisp -> deftypes-for-target.lisp
3650 Furthermore, several other previously target-only files foo.lisp (e.g.
3651 hash-table.lisp and random.lisp) have been split into a target-and-host
3652 foo.lisp file and a target-only target-foo.lisp file, with their key type
3653 definitions in the target-and-host part, so that the cross-compiler will
3654 know more about target types.
3655 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3656 gone away. In their place are various *BACKEND-FOO* variables
3657 corresponding to the slots of the old structure.
3658 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3659 into the target SBCL has been fixed.
3660 * The chill.lisp system for loading cold code into a running SBCL
3662 * Support for the CMU CL "scavenger hook" extension has been removed.
3663 (It was undocumented and unused in the CMU CL sources that SBCL was
3664 derived from, and stale in sbcl-0.6.1.)
3665 * Various errors in the cross-compiler type system were detected
3666 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3667 (enabling various consistency checks). Many of them were fixed,
3668 but some hard problems remain, so the compiler is back to
3669 running without *TYPE-SYSTEM-INITIALIZED* for now.
3670 * As part of the cross-compiler type system cleanup, I implemented
3671 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3672 * I have started adding UNCROSS calls throughout the type system
3673 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3674 on cross-compiler input files will be able to go away, and various
3676 * CONSTANTP now returns true for quoted forms (as explicitly required
3679 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3681 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3682 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3683 (MAKE-LIST -1). In the longer term, it ought to become true
3684 that declarations are assertions even at SAFETY 1. For now, it's not
3685 quite true even at SAFETY 3, but it's at least more nearly true..
3686 (Note that this change seems to increases the size of the system by
3687 O(5%) and to decrease the speed of the compiler by 20% or more.)
3688 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3689 for the problem of printing dozens of lines of distracting information
3690 about low-level system machinery as part of the top stack frame
3691 on entry to the debugger when an undefined function was called.
3692 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3693 is not reset to COMMON-LISP-USER.
3694 * Compilation of stuff related to dyncount.lisp has been made conditional
3695 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3696 smaller. The various dyncount-related symbols have been moved into
3697 a new "SB-DYNCOUNT" package.
3698 * tty-inspect.lisp has been renamed to inspect.lisp.
3699 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3700 feature has gone away. (When we eventually port to other flavors of
3701 libc and/or Unix, we'll try to make the differences between flavors
3702 invisible at the user level.)
3703 * Various other *FEATURES* tags, and/or their associated conditionals,
3704 have been removed if obsolescent, or given better documentation, or
3705 sometimes given more-mnemonic names.
3707 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3709 * tidied up "make.sh" script
3710 * tidied up system directory structure
3711 * better "clean.sh" behavior
3712 * added doc/FOR-CMUCL-DEVELOPERS
3713 * many many small tweaks to output format, e.g. removing possibly-confusing
3714 trailing #\. character in DESCRIBE-INSTANCE
3715 * (EQUALP #\A 'A) no longer signals an error.
3716 * new hashing code, including EQUALP hashing
3717 * tidied up Lisp initialization and toplevel
3718 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3719 * command line argument processing
3720 * added POSIX-GETENV function to deal with Unix-ish environment variables
3721 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3722 terminating SBCL on EOF
3723 * non-verbose GC by default
3724 * There is no more "sbcl" shell script; the sbcl file is now the C
3725 runtime executable (just like CMU CL).
3726 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3728 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3729 symbol and package information as Lisp native symbol and package objects
3730 instead of strings naming symbols and strings naming packages. This way,
3731 whenever packages are renamed (as in warm init), debug information is
3732 transformed along with everything else.
3733 * tweaked the optimization policy declarations which control the building
3734 of SBCL itself. Now, among other things, the system no longer saves
3735 source location debugging information. (This helps two problems at once
3736 by reducing SBCL size and by keeping SBCL from trying to look for its
3737 sources -- which may not exist -- when reporting errors.)
3738 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3739 debugging and testing purposes
3740 * cleaned up printing, making the printer call PRINT-OBJECT for
3741 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3742 methods, giving nearly-ANSI behavior
3743 * converted almost all special variables to use *FOO* naming convention
3744 * deleted PARSE-TIME functionality, since it can be done portably
3745 * moved some files out of cold init into warm init
3746 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3748 * regularized formatting of source files
3749 * added an install.sh script
3750 * fixed ridiculous memory usage of cross-compiler by making
3751 compiler/alloc.lisp not try to do pooling unless it can hook
3752 itself into the GC of the cross-compilation host. Now the system
3753 builds nicely on my old laptop.
3754 * added :SB-ALLOC in target-features.lisp-expr
3755 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3756 was not implemented)
3757 * re-did condition handling and note reporting in the compiler. Notes
3758 are no longer handled by signalling conditions. Style warnings
3759 and warnings are handled more correctly and reported in such a way
3760 that it's easy to find one or the other in your output (so that you
3761 can e.g. figure out which of many problems caused COMPILE-FILE to
3763 * changed the severity of several compiler warnings from full WARNING
3764 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3765 compiler note reporting so that it doesn't use the condition system
3766 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3767 COMPILE-FILE command)
3768 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3769 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3770 no longer supported, since their implementation was deeply intertwingled
3771 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3772 * removed bogus "support" for compiler macros named (SETF FOO), and
3773 removed the compiler macro for SETF INFO (but only after making a fool
3774 of myself on the cmucl-imp mailing list by posting a bogus patch for
3775 DEFINE-COMPILER-MACRO..)
3776 * Compiled files containing forms which have side effects on the Lisp
3777 reader (such as DEFPACKAGE forms) are now handled more correctly.
3778 (Compiler queuing of top level lambdas has been suppressed by setting
3779 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3780 * deleted various currently-unused source files, e.g. gengc.lisp. They
3781 may be added back at some point e.g. when porting to other architectures,
3782 but until they are it's distracting to distribute them and to try to
3784 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3785 there were so many of them they're just distractions, and UNCROSS is
3786 known to be able to handle the current sources
3787 * moved PROFILE functionality into TRACE, so that it will be clear
3788 how the wrapping and unwrapping of functions when you profile them
3789 interacts with the wrapping and unwrapping of functions when you
3790 trace them. (Actually, the functionality isn't there yet, but at least
3791 the interface specification is there. Hopefully, the functionality will
3792 arrive with some future maintenance release.)
3793 * removed host-oops.lisp
3794 * changed signature of QUIT function to allow UNIX-CODE argument
3795 * fixed READ-SEQUENCE bug
3796 * tweaked verbose GC output so that it looks more like the progress
3797 output that ANSI specifies for functions like LOAD
3798 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3799 * added <http://sbcl.sourceforge.com> to the banner information printed by