1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
3 * new feature: source path information is generated for macro-expansion
4 errors for use in IDE's like Slime (thanks to Helmut Eller)
5 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
7 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
8 * minor incompatible change: in sbcl-0.9.11 (but not earlier
9 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
10 into subclasses of the finalized class. Now user calls to
11 FINALIZE-INHERITANCE finalize just the one class, and calls by the
12 system return before any subclasses are finalized.
13 * minor incompatible change: The reader no longer ignores errors
14 regarding non-existent packages in #+ and #- feature tests.
15 * new feature: command line options --no-sysinit, --no-userinit to
16 inhibit loading the corresponding init files
17 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
18 for sending data through UDP sockets (thanks to François-René Rideau)
19 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
20 error is signalled instead (thanks to François-René Rideau)
21 * minor incompatible change: Error signalling behaviour of lexical
22 operations violating package locks has changed slightly. Refer to
23 documentation on package locks for details.
24 * enhancement: EVAL can process IF-expressions without resorting to the
26 * bug fix: Some operations involving SIN, COS, or TAN weren't being
27 constant-folded properly due to missing out-of-line functions.
28 (reported by Mika Pihlajamäki)
29 * bug fix: LISTEN sometimes returned T even in cases where no data was
30 immediately available from the stream
31 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
32 were reversed. (reported by Levente Mészáros)
33 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
34 when given a vector displaced to an adjustable array. (reported
36 * bug fix: derivation of float boundaries from numbers outside the
37 appropriate float range (reported by John Wiseman)
38 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
40 * bug fix: precomputing cache entries for generic functions with
41 some subclasses of specializers as yet invalid does not attempt to
42 fill a cache line with a negative offset. (reported by Levente
44 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
45 allow condition class objects as arguments to DOCUMENTATION and
46 (SETF DOCUMENTATION); only find and set documentation for
47 structure names for the STRUCTURE doc-type. (suggested by Gary
49 * improvements to the Win32/x86 port:
50 ** (user-homedir-pathname) and default initialization file
51 locations now know about the user's "Documents and Settings"
52 directory (thanks to Yaroslav Kavenchuk)
53 ** run-program is implemented (thanks to Mike Thomas)
54 ** sockets support (thanks to Timothy Ritchey)
55 ** better backtrace support (thanks to Alastair Bridgewater)
56 ** sb-grovel supported
57 ** asdf-install and sb-posix work somewhat
58 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
59 * improvements to the Solaris/x86 port:
60 ** works on Solaris 11/Solaris Express
61 ** floating-point exception handling support
62 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
63 * fixed some bugs revealed by Paul Dietz' test suite:
64 ** REMOVE-METHOD returns its generic function argument even when
65 the method is not one of the generic functions' methods.
66 ** objects declared as MEMBER types can be admissible arguments to
68 ** printing characters should simply be printed by the FORMAT ~:C
70 ** compiler failure when compiling functions with hairy constant
71 defaults for optional parameters.
72 ** compiler produces wrong code when MAYBE-INLINE-expanding a
73 function, which is already optimized.
75 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
76 * new platform: experimental support for SBCL x86/Darwin, including
77 MacOS X 10.4.5 on Intel.
78 * new feature: Unicode character names are now known to the system
79 (through CHAR-NAME and NAME-CHAR).
80 * new feature: the filesystem location of SBCL's core file is
81 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
82 * minor incompatible change: the contrib modules SB-POSIX and
83 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
84 this change is to make it easier to distribute
85 location-independent binaries.
86 * bug fix: as implied by AMOP, standardized classes no longer have
87 slots named by external symbols of public packages. (reported by
89 * optimization: calling functions via constant symbols -- as in
90 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
91 via the function object as in (FUNCALL #'FOO).
92 * optimization: on x86 and x86-64, the calling convention for the
93 case of dealing with an unknown number of values has been altered
94 to be friendlier to the prediction heuristics implemented,
95 particularly with reference to CALL and RET pairing. (thanks to
97 * optimization: on x86, the code for access to thread-local symbol
98 values and binding/unbinding of thread-local symbols is smaller.
99 (thanks to Alastair Bridgewater)
100 * enhancement: CONSTANTP is now able to determine constantness of
101 more complex forms, including calls to constant-foldable standardized
102 functions and some special forms beyond QUOTE.
103 * fixed bug: occasional GC crashes on Solaris/x86
104 * optimization: x86-64 supports stack allocation of results of simple
105 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
106 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
107 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
108 (thanks to James Knight)
109 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
110 by the standard (thanks to Stephen Compall)
112 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
113 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
114 be used for bundling the runtime and the core file into one
115 executable binary. This feature is not currently supported on all SBCL
116 platforms. (thanks to James Bielman and NIIMI Satoshi)
117 * new feature: a generational or ephemeral garbage collector is now
118 the default on the PowerPC platform (both Linux and Darwin). The
119 old Cheney (stop and copy) collector is a build-time option.
120 (thanks to Cyrus Harmon, after Raymond Toy)
121 * minor incompatible change: the method by which SBCL finds its
122 contributed modules has changed; it no longer relies on symbolic
123 links from an $SBCL_HOME/systems directory, but searches directly
124 in the subdirectories of $SBCL_HOME.
125 * enhancement: the dynamic heap size on the Linux/PPC platform is
126 markedly larger, even using the older Cheney garbage collector.
127 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
128 certain complicated string types. (reported by Gary King)
129 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
130 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
131 * fixed bug: DOCUMENTATION on structures no longer signals an
132 error if no structure type of the right name exists. (reported by
134 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
135 applicable non-standard primary or :AROUND method on
136 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
137 no longer cause unbound variable errors. (reported by Kevin Reid)
138 * fixed bug: metacircle resolution in cases where methods have slots
139 added before the slots from STANDARD-METHOD. (reported by Jean
141 * fixed bug: the Power PC assembly code for calling into lisp
142 sometimes computed its return address wrongly (depending on the
143 15th bit of the address, fixed at link time). This used to
144 manifest itself in a segmentation violation while building PCL.
145 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
146 many others over the years)
147 * fixed bug: ROOM no longer reports silly numbers for stack usage if
148 the stack pointer (treated as a signed integer) is negative.
149 (thanks to Peter van Eynde)
151 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
152 * new platform: experimental support for the Windows operating
153 system has been added. (thanks to Alastair Bridgewater)
154 * fixed several bugs in and robustified the PPC FFI (including
155 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
156 * bug fix: allow non-simple string symbol names (reported by Paul
158 * bug fix: interrupt handling on NetBSD (thanks to Richard M
160 * bug fix: saving a core corrupted callbacks on x86/x86-64
161 * bug fix: closed a loophole in metacircularity detection and
162 grounding in the PCL implementation of CLOS.
163 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
164 (reported by tomppa on #lisp)
165 * bug fix: clear the direction flag on Lisp -> C transitions, as
166 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
167 (reported by Andrej Grozin and Hendrik Maryns)
168 * optimization: major improvements to GC efficiency on GENCGC platforms
169 * optimization: faster implementation of EQUAL
170 * optimization: emit more efficient opcodes for some common
171 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
172 * optimization: several other minor code-generation improvements on x86-64
173 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
175 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
176 * minor incompatible change: (SETF CLASS-NAME) and (SETF
177 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
178 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
179 by ANSI as a generic function, and for consistency (SETF
180 GENERIC-FUNCTION-NAME) is treated likewise.
181 * fixed bug #233.b: make constraint propagation notice when a variable
182 value is changed after it is referenced but before it is used
183 * fixed bug #296: no more arbitrary behaviour from filenames with
184 odd characters as --load arguments. (reported by Adam Warner)
185 * fixed bug #390: :CHARACTER-SET pathname components now work as
186 expected. (reported by Tim Daly Jr)
187 * fixed bug #391: complicated :TYPE intersections in slot
188 definitions no longer cause an error in PCL internals.
189 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
190 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
191 returning the number of octets which would be written to the
192 file-stream. (thanks to Robert J. Macomber)
193 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
194 arguments to the internal stream functions. (thanks to David
196 * bug fix: stack exhaustion is now handled on the x86/SunOS
197 platform. (thanks to Daisuke Homma)
198 * bug fix: more accurate ROOM results on GENCGC platforms
199 * optimization: improved type inference for arithmetic-for
200 index variables in LOOP
201 * optimization: faster floating-point SQRT on x86-64
202 * fixed some bugs revealed by Paul Dietz' test suite:
203 ** DOCUMENTATION returns NIL instead of "" for method combinations
204 that don't have a docstring
206 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
207 * minor incompatible change: (SETF CLASS-NAME) and (SETF
208 GENERIC-FUNCTION-NAME) are no longer generic functions, and
209 therefore are not customizeable by user code (as seems to be at
210 least permitted and maybe required by AMOP). As a consolation,
211 however, the SBCL implementation of these functions now calls
212 REINITIALIZE-INSTANCE as specified by AMOP.
213 * bug fix: slot-definition documentation is propagated as per ANSI
214 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
215 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
216 argument, as do eslotd initialization methods. (from Pascal
217 Costanza's "Closer" project)
218 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
219 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
221 * bug fix: it is now possible to have more than one subclass of
222 STANDARD-GENERIC-FUNCTION without causing stack overflow.
223 (reported by Bruno Haible, Pascal Costanza and others)
224 * bug fix: the dependent update protocol now works for generic
225 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
227 * bug fix: condition-class instances corresponding to
228 DEFINE-CONDITION forms are now created eagerly. (reported by
229 Kalle Olavi Niemitalo on comp.lang.lisp)
230 * bug fix: floating point printing is more accurate in some
231 circumstances. (thanks to Simon Alexander)
232 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
233 merged with *DEFAULT-PATHNAME-DEFAULTS*.
234 * bug fix: callbacks on OS X now preserve stack-alignment.
235 (thanks to Cyrus Harmon)
236 * enhancement: the x86-64 disassembler is much better at
237 disassembling SSE instructions. (thanks to Lutz Euler)
238 * enhancement: CHECK-TYPE on a variable now allows type-inference
239 (thanks to Vincent Arkesteijn)
240 * optimization: improved performance of EUC-JP external format.
241 (thanks to NIIMI Satoshi)
242 * optimization: performance improvements to IO on file streams of
243 :ELEMENT-TYPE CHARACTER
244 * optimization: much faster memory allocation on x86-64
245 * optimization: faster garbage collections (latency and throughput)
247 * optimization: faster bignum subtraction and division on x86 and x86-64
248 (thanks to Lutz Euler)
249 * optimization: more accurate type-inference for loops that use a
250 floating point index variable or a negative step.
252 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
253 * bug fix: add a workaround to SBCL looping infinitely at startup on
254 Linux kernels with apparently buggy implementations of personality().
255 (thanks to Svein Ove Aas)
256 * bug fix: Unicode symbols are correctly printed in LDB backtraces
257 (thanks to David Lichteblau)
258 * bug fix: local bindings shadow global symbol macros for
259 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
260 * optimization: non-open coded uses of numeric comparison operators
261 (e.g. >) no longer cons when called with more than one parameter
262 on platforms supporting dynamic-extent allocation.
263 * enhancement: saving cores with foreign code loaded is now supported
264 on MIPS/Linux in addition to the previously supported platforms.
265 * bug fix: FIND-RESTART now tests for activity, not applicability when given
266 a restart object as identifier. (reported by Helmut Eller for CMUCL)
267 * bug fix: division by zero in sb-sprof when no samples were collected
268 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
269 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
270 (thanks to Alexander Kjeldaas)
271 * new feature: ignoring the return values of destructive functions
272 like NREVERSE signals a compile-time style-warning.
273 (thanks to Kevin Reid)
274 * new feature: the alignment of alien structure fields can be
275 explicitly specified. (thanks to Cyrus Harmon)
276 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
277 and dump core on SIGQUIT
279 ** incompatible change: threads do not inherit values of specials
280 from their parents (see manual)
281 ** bug fix: threads stacks belonging to dead threads are freed by the
282 next exiting thread, no need to gc to collect thread stacks anymore
283 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
284 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
285 ** bug fix: dynamic variable and thread start related gc lossage
286 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
288 * fixed some bugs revealed by Paul Dietz' test suite:
289 ** SUBTYPEP is slightly more accurate on heinously complicated
290 CONS types where some of the members have uncertain (in the
291 NIL, NIL sense) type relationships to each other.
293 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
294 no longer purified unless :PURIFY T is explicitly specified.
295 ** Non-purified cores are significantly smaller than before
297 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
298 * new feature: timers based on Zach Beane's excellent timer package
299 * added support for the following external formats: koi8-u,
300 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
301 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
302 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
303 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
304 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
305 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
306 * incompatible change: a threaded SBCL will no longer revert to
307 non-threaded mode on non-NPTL systems, but refuse to start entirely.
308 * bug fix: interrupts are disabled until startup is complete; no
309 more sigsegvs when receiving a signal to soon
310 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
312 * bug fix: add a workaround for the memory randomization features in
313 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
314 workaround will only be in effect on systems with the proc filesystem
316 * bug fix: printing objects of type HASH-TABLE signals a
317 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
319 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
320 have been running for over 50 days. (reported by Gilbert Baumann)
321 * bug fix: the logic for getting names of functions gets less
322 confused when confronded with alternate-metaclass
323 funcallable-instances. (reported by Cyrus Harmon)
324 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
325 consistent, even on internal alternate-metaclass objects.
326 * bug fix: flush closure information collected by physical
327 environment analysis prepass before the main pass. (bug reported
329 * bug fix: compiler pack phase does not modify a hashtable, which is
330 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
331 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
332 may be expanded. (reported by Alexander <malishev> on c.l.l)
333 * bug fix: no more style-warnings when compiling code using LAST
334 under high-SPEED low-SPACE settings. (reported by David Wallin
336 * fixed some incompatibilities between SBCL's MOP and the MOP
338 ** the METAOBJECT class is now implemented;
339 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
340 STANDARD-OBJECT, as required;
341 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
342 now compatible (as required by VALIDATE-SUPERCLASS); there
343 remains a consistency requirement over the presence or absence
344 of the FUNCTION class in the superclass list of finalized
345 classes; see the manual for more details;
346 ** the :AROUND method for COMPUTE-SLOTS on
347 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
348 requested slot ordering.
350 ** bug fix: parent thread now can be gc'ed even with a live
352 ** bug fix: binding a special with PROGV to no value is not
353 the same as that symbol not having been bound (thanks to
355 ** bug fix: binding specials is thread safe (thanks to
357 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
358 and SB-SPROF do not die with 'no handler for signal XX in
359 interrupt_handle_now(..)' anymore
360 ** bug fix: WITH-TIMEOUT works with multiple running threads
361 * fixed some bugs revealed by Paul Dietz' test suite:
362 ** ENSURE-GENERIC-FUNCTION should take a method class object for
363 the :method-class keyword argument.
365 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
366 * new port: the Solaris operating system on x86 processors is now
367 mostly supported, though some rough edges in the environment
368 remain. (thanks to Daisuke Homma)
369 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
370 space for its heap. (thanks to Thiemo Seufer)
371 * optimization: SBCL on MIPS platforms now supports dynamic-extent
372 closures. (thanks to Thiemo Seufer)
373 * minor incompatible change: eof selects abort in the debugger.
374 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
375 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
377 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
378 deprecated, and will go away in a future revision of SBCL.
379 * minor incompatible change: GC-ON and GC-OFF are no longer
380 implemented with a counter, it does not matter how many times gc
381 is switched on or off
382 * bug fix: discriminating functions for generic function classes
383 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
384 make invalid assumptions about method precedence order. (reported
386 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
387 platforms. (thanks to Thiemo Seufer)
388 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
389 * bug fix: correct pathname printing with printer escaping is on.
390 (thanks to Kevin Reid)
391 * bug fix: complex VOP definitions in "user-space" no longer trigger
392 package locks. (reported by Zach Beane)
393 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
394 for funcallable-instance functions, and is no different from
396 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
397 characters in the current readtable. (reported by Nicholas Neuss)
398 * bug fix: SUBTYPEP on various CONS types returns more a more
399 accurate acknowledgment of its certainty.
400 * optimizations: REMOVE-DUPLICATES now runs in linear time on
401 lists in some cases. This partially fixes bug 384.
402 * flush all standard streams before prompting in the REPL and the
404 * bug fix: signal handling and triggering gc do not conflict
405 directly anymore, in particular a high frequency sb-sprof does
406 not prevent gc from running
407 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
408 approximation for timezone and DST information between the
409 universal time epoch and the smallest negative 32-bit time_t.
410 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
411 year 1899 so long as the encoded time is non-negative.
412 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
413 the correct answer for non-constant rotate amounts when performing
414 an inline 32-bit rotation.
416 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
417 there is only one thread in the session
418 ** bug fix: memory leak for streams created in one thread and
419 written to in another
420 ** bug fix: lockup when compiled with gcc4
421 ** bug fix: race that allows the gc to be triggered when gc is
423 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
424 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
426 ** bug fix: finished threads are gc'ed properly
427 * fixed some bugs revealed by Paul Dietz' test suite:
428 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
429 has arguments with a different set of applicable methods from
430 the orignal arguments.
431 ** The type error thrown by MAP now has a correct expected-type
433 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
434 name a compiled function.
435 ** Three MISC tests where a large bignum was improperly coerced to
436 a float that couldn't represent that bignum during type
437 derivation were fixed.
438 ** SUBTYPEP can now handle types involving the negation of a
439 list-form FUNCTION type.
440 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
441 as (COMPLEX (AND RATIO (NOT FIXNUM))).
442 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
444 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
445 * New feature: Experimental support for bivalent streams: streams
446 opened with :element-type :default now allow character and binary
447 (unsigned-byte 8) I/O
448 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
449 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
451 * bug fix: no more highly sporadic "couldn't check whether ~S is
452 readable" when reading a stream and an interrupt hits in the middle
453 of a select system call
454 * compiler better recognizes complex arrays (reported by Eduardo
456 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
457 for variables on SBCL built with linkage-tables. (reported by Luis
459 * various error reporting improvements.
460 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
461 (Thanks to Thiemo Seufer)
462 * bug fix: nested reader invokations work correctly
463 * bug fix: it is possible to have simultaneous references to foreign
464 code and foreign data with the same name.
466 ** added x86-64 support
467 ** incompatible change: the threading api now works with thread
468 objects instead of thread ids
469 ** bug fix: threads are protected from signals and interruption when
470 starting up or going down
471 ** bug fix: a race where an exiting thread could lose its stack to gc
472 ** bug fix: don't halt on infinite error in threads if possible
473 ** fixed numerous gc deadlocks introduced in the pthread merge
474 ** bug fix: fixed thread safety issues in read and print
475 ** bug fix: debugger doesn't hang on session lock if interrupted at
476 an inappropriate moment
477 ** bug fix: run-program is now thread safe(r)
478 ** bug fix: inner with-recursive-lock no longer releases the mutex
479 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
480 * fixed some bugs revealed by Paul Dietz' test suite:
481 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
482 EXPECTED-TYPE slots filled.
483 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
485 ** MAKE-CONDITION accepts classes as type-designators.
486 ** COMPILE may never return NIL.
487 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
488 range before calling Unix time functions
490 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
491 * numerous signal handling fixes to increase stability
492 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
493 * minor incompatible change: we now correctly canonize default
494 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
495 as per the MOP, rather than the historical (INITARG INITFUNCTION
496 INITFORM). (reported by Bruno Haible)
497 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
498 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
499 for more information.
500 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
501 pathname is a directory pathname.
502 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
503 * dynamic space size on PPC has been increased to 768Mb. (thanks to
505 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
506 :METACLASS argument in addition to a class name. (reported by
507 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
508 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
509 (reported by Bruno Haible; patch from Gerd Moellmann)
510 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
512 * bug fix: more cleanups to the floating point exception handling on
513 x86-64 (thanks to James Knight)
514 * bug fix: the compiler does not try to constant fold calls of
515 COERCE and BIT-* functions when they return freshly constructed
516 objects. (reported by Nikodemus Siivola and Paul Dietz)
517 * optimization: improved the MIPS versions of generic (in the
518 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
519 * optimization: direct conversion of (unsigned-byte 32) to floats on
520 the PowerPC platform.
521 * optimization: structure instances with raw slots now use less
522 memory, and probably show better memory locality. (thanks to
524 * optimization: DYNAMIC-EXTENT declarations for lists and closures
525 are treated as requests for stack allocation on the x86-64,
526 Alpha-32, PPC and SPARC platforms.
527 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
528 the wrong file descriptor; implementation of SOCKET-OPEN-P.
529 (thanks to Tony Martinez)
531 ** gcing a dead thread can no longer lead to lockups
532 ** threads block signals until they are set up properly
533 ** errno is no longer shared by threads
534 ** interrupt-thread restores the eflags register on x86
535 ** fixed some lockups due to gc/thread interaction
536 * fixed some bugs revealed by Paul Dietz' test suite:
537 ** invalid dotted lists no longer raise a read error when
539 ** signal an error if a symbol that names a declaration is used
540 as the name of a type, or vice versa
541 ** allow using the (declare (typespec var*)) abbreviation for
542 (declare (type typespec var*)) with all type specifiers
543 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
544 ** always return NIL from PPRINT-POP when OBJECT is NIL
545 ** don't signal errors when pretty-printing malformed LABELS,
546 FLET or MACROLET forms
547 ** declarations in a DOLIST body are also in scope for the
549 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
551 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
554 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
555 * fixed cross-compiler leakages that prevented building a 32-bit
556 target with a 64-bit host compiler.
557 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
558 opened with :IF-EXISTS :OVERWRITE.
559 * fixed bug 281: error for an invalid qualifier in a short-form method
560 combination method is not signalled until the faulty method is called.
561 * bug fix: iteration variable type inferrer failed to deal with open
562 intervals. (reported by Alan Shields)
563 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
564 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
565 or more runtime options were provided to the sbcl binary.
566 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
567 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
568 * optimization: there's now a fast-path for fixnum arguments in the
569 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
570 * optimization: the code generated on x86-64 is more compact thanks
571 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
572 * bug fix: floating-point exception handling now partly works on
573 x86-64. (Thanks to James Knight)
574 * improvement to the MIPS backend from Thiemo Seufer: C-style
575 64-bit long long arguments and return values to alien functions
577 * fixed some bugs revealed by Paul Dietz' test suite:
578 ** the type-error signalled from WARN has a filled-in DATUM slot.
579 ** the type-error required when a stream is not associated with
580 a file has the stream as its datum.
581 ** type-errors on single-floats on x86-64 no longer have
582 :INVALID-OBJECT as the datum
583 ** the type-errors signalled for invalid function names now have
584 a correct expected type
585 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
586 for structures defined with a :TYPE. Documentation strings for
587 typed structures are no longer immediately discarded
588 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
589 broadcast streams and synonym streams. FILE-LENGTH now also works
590 on broadcast streams.
592 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
593 * incompatible change: the --noprogrammer option, deprecated since
594 version 0.7.5, has been removed. Please use the equivalent
595 --disable-debugger option instead.
596 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
598 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
599 inoperational for a while now) has been completely removed.
600 * null lexical environments are now printed as #<NULL-LEXENV>,
601 significantly reducing the amount of clutter in typical backtraces.
602 * documentation on weak pointers, finalization, and after GC hooks
603 has been added to the manual.
604 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
605 as other specialized array types, is much faster. SUBSEQ and
606 COPY-SEQ on such arrays have also been sped up.
607 * optimization: EQL is now more efficient when at least other argument
608 is known to be of type (OR FIXNUM (NOT NUMBER)).
609 * fixed bug: the runtime is now less vulnerable to changes in the
610 size of the SBCL object on OS X, and virtual memory is reserved for
611 all spaces that need to be at a fixed address.
612 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
613 * fixed bug: finalizers and after GC hooks that cause consing are now
615 * fixed bug: compiler error messages and summaries are now printed to
616 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
617 * fixed inference of the upper bound of an iteration variable.
618 (reported by Rajat Datta).
619 * fixed bug 211e: calling local functions with duplicated constant
620 keyword argument no longer causes a bogus style warning about an
622 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
623 ftype declaration to be disregarded. (reported by Dave Roberts)
624 * fixed bug 373: caused by erronous compilation of references to alien
625 variables in the runtime on ppc/darwin.
626 * fixed bug 376: CONJUGATE type deriver.
627 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
628 (reported by Baughn on #lisp)
629 * a cross-compiler bug on non-x86 platforms has been identified and
630 fixed. (thanks to Bruno Haible)
631 * improvements to the MIPS runtime code for increased stability.
632 (thanks to Thiemo Seufer)
633 * increased the maximimum compact environment size to allow
634 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
635 * partial workaround for bug 135: don't name the function we're
636 calling for hairy cases of EVAL, so as not to accumulate one environment
637 entry per call to EVAL. (reported by Kevin Reid)
638 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
639 * optimization: type testing for non-vector arrays should be faster.
640 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
642 * bug fix: setting 31st element of a bit vector to zero did not work
644 * bug fix: redefining a class definition which failed due to a
645 previous accessor / function clash now works (but see BUGS entry
646 #380 for more problems in this area). (thanks to Zach Beane)
647 * the long form of DEFINE-METHOD-COMBINATION disables method group
648 checking when given a single method group with pattern *. (thanks
650 * on x86 compiler supports stack allocation of results of simple
651 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
652 * support for building and running on Mac OS X 10.4 "Tiger" has been added
653 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
654 * fixed some bugs related to Unicode integration:
655 ** the restarts for recovering from input and output encoding
656 errors only appear when there is in fact such an error to
658 * fixed some bugs revealed by Paul Dietz' test suite:
659 ** MISC.549 and similar: late transformation of unsafe type
660 assertions into derived types caused unexpected code
662 ** SCALE-FLOAT type deriver is less wrong.
663 ** type derivers for EXP, LOG and similar functions compute result
664 types for complex arguments better.
665 ** (MISC.563) CONJUGATE type deriver works for very restricted
667 ** out-of-line type testers for character strings are available.
668 ** EQUAL compiler transform understands specialness of objects
670 ** accessing double-floats stored on the stack now works on x86-64.
671 ** debugger internals could sometimes create invalid lispobjs,
672 resulting in GC crashes.
673 ** MISC.548: type check weakening can convert required type into
675 ** initialization forms for bindings are not in scope of free special
678 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
679 * incompatible change: thread support for non-NPTL systems has
680 been removed - locking is buggy and unreliable. A threaded
681 SBCL build will now warn at startup and refuse to create
682 new threads, unless futex support is detected in the kernel
683 * incompatible change: the top level REPL now has only an ABORT
684 restart associated with it, not TOPLEVEL and ABORT as it used to.
685 TOP and TOPLEVEL are now available as debugger commands for
686 returning to the top level.
687 * incompatible change: forms evaluated in the REPL now use the
688 global optimization policy.
689 * incompatible change: user- and system-initialization files are
690 no longer processed with LOAD, but by READ and EVAL; hence the
691 global optimization policy, startup package, readtable, etc,
693 * The .fasl file format number has been incremented because of
694 various incompatible changes.
695 * internal entry point details and argument counts no longer appear
696 in backtraces unless explicitly requested by setting
697 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
698 * built-in and standard functions no longer have names like "top
699 level local call to FOO".
700 * fixed bug 32: functions defined in non-null lexical environments
701 now have more legible printed representation
702 * fixed bug 33: functions defined in non-null lexical environemnts
703 are now more amenable to inspection by INSPECT.
704 * workaround for bug 354: XEPs no longer appear in backtraces unless
705 explicitly requested.
706 * fixed bug: receiving the signal which results from attempting to
707 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
708 SIGBUS on other *BSDs) on architectures where the C stack is also
709 the Lisp stack (x86 and x86-64) from foreign code no longer leads
710 to debugger confusion or wild instability. (reported by Cheuksan
712 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
713 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
714 (reported by Lutz Euler)
715 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
716 compiled code. (reported by Paul Dietz)
717 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
718 specialized parameter to a method to something that is not TYPEP
719 the specializer is now possible.
720 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
721 face of package deletion.
722 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
723 pathname. (reported by David Tolpin on c.l.l)
724 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
725 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
726 STRING-STREAM and FILE-STREAM, respectively.
727 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
728 than previously; in addition, its test suite is now run on build.
729 (thanks to Luke Gorrie)
730 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
731 * optimization: added a immediate representation for single-floats
733 * fixed some bugs revealed by Paul Dietz' test suite:
734 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
735 ** attempting to create a package with a colliding nickname causes
736 correctable errors to be signalled.
737 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
738 ** several x86-64 backend bugs related to sign-extension of immediate
741 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
742 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
743 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
745 * fixed loading of multiply forward-referenced layouts.
746 (thanks to Cheuksan Wang)
747 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
748 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
749 (see COMPILE-FILE documentation for details of :PRINT option)
750 * fixed bugs 19 and 317: fixed-format floating point printing is
751 more accurate. This also fixes a bug reported by Adam Warner
752 related to the ~@F format directive.
753 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
755 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
756 dispatch table if the from-char is a dispatch macro character.
757 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
758 by the wordsize no longer ignore the last word. (reported by Lutz
760 * fixed bug in type checking of dynamic-extent variables. (reported
762 * optimization: sequence traversal functions use their freedom to
763 coerce function designators to functions.
764 * optimization: code with many calls to CLOS methods specialized on
765 CLOS classes has had redundant type checks removed.
766 * optimization: added declarations to speed up operations that access
767 the internal character database (for example STRING-UPCASE)
768 * optimization: comparison operations between floats and sufficiently small
769 fixnums no longer create extra rationals
770 * fixed some bugs related to Unicode integration:
771 ** portions of multibyte characters at the end of buffers for
772 character-based file input are correctly transferred to the
773 start of the buffer at the next read.
774 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
775 passing it through to OPEN.
776 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
777 argument given to internal calls to OPEN.
778 ** the built-in comment readers (introduced by character sequences
779 ";" and "#|") are more forgiving to encoding errors; they will
780 STYLE-WARN and then attempt to resync the stream at a character
781 boundary. (thanks to Teemu Kalvas)
782 * fixed some bugs in the x86-64 port:
783 ** Negative short int return values from c-calls are sign-extended
785 ** The stack is aligned to 16-bytes for c-calls, as required by
786 the ABI. (thanks to Cheuksan Wang)
787 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
788 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
789 for enums. (thanks to Vincent Arkesteijn)
790 ** Multiple small optimizations and bugfixes for floating point
792 * fixed some bugs revealed by Paul Dietz' test suite:
793 ** Space, Tab, Linefeed, Return and Page have the invalid
794 secondary constituent character trait.
795 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
797 ** WITH-INPUT-FROM-STRING should only update the index place on
799 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
801 ** Bit-array operations (BIT-AND and similar) worked incorrectly
802 with one-dimensional arrays with fill pointers.
803 ** TYPE-OF failed on a complex with an integer realpart and a
805 ** compiler failure during type inference for the code of form
806 (IF (EQL X (THE ...)) ...) (MISC.535).
808 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
809 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
810 platform. The port supports 61-bit fixnums, large memory spaces
811 and reloading shared object files.
812 * enhancement: saving cores with foreign code loaded is now
813 supported on ppc/Darwin in addition to the previously supported
815 * enhancement: the statistical profiler now walks deeper into the
816 call stack for more meaningful call-graphs and accrued time
817 reports (x86/x86-64 only). It also now reports time spent in
819 * enhancement: it is now possible to trace most individual methods
820 of a generic function in addition to tracing the generic function
822 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
824 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
825 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
826 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
827 produces an error. (thanks to Vincent Arkesteijn)
828 * bug fix: NAMESTRING on pathnames with :WILD components in their
829 directories works correctly. (thanks to Artem V. Andreev)
830 * fixed bug 125: compiler preserves identity of closures. (reported
832 * bug fixed: functions with &REST arguments sometimes failed with
833 "Undefined function" when compiled with (DEBUG 3). (reported by
835 * bug fix: overflow during compiling of setting element of a bit
836 vector with constant index and value. (reported by Timmy Douglas)
837 * build fix: fixed the dependence on *LOAD-PATHNAME* and
838 *COMPILE-FILE-PATHNAME* being absolute pathnames.
839 * on x86 compiler partially supports stack allocation of dynamic-extent
841 * GO and RETURN-FROM do not check the extent of their exit points
842 when compiled with SAFETY 0.
843 * fixed some bugs related to Unicode integration:
844 ** encoding and decoding errors are now much more robustly
845 handled; it should now be possible to recover even from invalid
846 input or output to the terminal. (thanks to Teemu Kalvas)
847 ** provided a first cut at implementing STRING-TO-OCTETS and
848 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
849 ** altered the SB-MD5 contributed module slightly, changing the
850 interface just enough for it to be supportable for builds where
851 lisp characters are not eight bits.
852 * fixed some bugs revealed by Paul Dietz' test suite:
853 ** the FORMATTER-generated functions for ~V[ conditionals require
854 the correct number of arguments.
855 ** READ-FROM-STRING returns the mandated second value when applied
856 to displaced strings.
857 ** the #\Rubout and #\Backspace characters are treated as invalid
858 constituent characters by the tokenizer.
860 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
861 * new feature: reloading changed shared object files with
862 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
863 * new feature: references to foreign variables and functions
864 can now be compiled and loaded before the corresponding shared
865 object file is loaded, as long as the foreign definitions are
866 available at runtime.
867 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
868 supported. (thanks to Dan Debertin)
869 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
870 just keywords. (thanks to Vincent Arkesteijn)
871 * fixed bug #331: structure-class instances corresponding to
872 DEFSTRUCT forms are now created eagerly.
873 * fixed bug #345: backtraces from calls to undefined functions work
874 on x86 as well. Related bug #61 is now also partially fixed on x86
875 (backtraces from throws to unknown catch tags.)
876 * bug fix: lambda-list parsing is now stricter vrt. order and number
877 of lambda-list keywords.
878 * bug fix: as specified by AMOP, an error is signalled if a
879 class-option appears multiple times in a DEFCLASS form. (reported
881 * bug fix: RANDOM can be compiled when the compiler derives the type
882 of its numeric argument as a disjoint set of small integers.
883 (reported by Paul Dietz)
884 * bug fix: starting a core saved with shared objects loaded when
885 those objects are not available no longer causes threaded SBCL to
886 hang. (reported by Sean Ross)
887 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
889 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
890 argument, which must always be NIL. (reported by Kalle Niemitalo)
891 * bug fix: printing 1.0d+23 no longer results in an error.
892 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
893 * bug fix: structure slot setters preserve evaluation order. (thanks
895 * fixed some bugs related to Unicode integration:
896 ** RUN-PROGRAM can allow its child to take input from a Lisp
897 stream. (reported by Stefan Scholl)
898 ** ASDF-INSTALL successfully downloads .tar.gz files in all
899 locales. (reported by Ken Causey)
900 * fixed some bugs revealed by Paul Dietz' test suite:
901 ** INCF, DECF and REMF evaluate their place form as specified in
903 ** FORMATTER expands ~{ ~} iteration directives with V or #
904 parameters correctly.
905 ** FORMATTER deals with the ~@[ ~] conditional directive where the
906 consequent uses no arguments correctly.
907 ** the system has a partial understanding of the (COMPLEX RATIO)
909 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
912 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
913 * new feature: a build-time option (controlled by the :SB-UNICODE
914 keyword feature, enabled by default) for building the system with
915 support for the entire 21-bit character space defined by the
917 * new feature: the system now has rudimentary external-format
918 support; the primary user-visible change at this time is that
919 characters with the high bit set (such as lower-case-e-acute) will
920 print correctly to a terminal in a UTF-8 environment.
921 * minor incompatible change: BASE-CHAR no longer names a class;
922 however, CHARACTER continues to do so, as required by ANSI.
923 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
924 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
925 has been moved to the SB-EXT package (temporarily re-exported from
927 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
928 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
930 * fixed bug #351: better error-handlind and reporting for malformed
932 * fixed bug #350: bignum-printing is now more memory-efficient,
933 allowing printing of very large bignums, eg. (expt 2 10000000).
934 (reported by Bruno Haible)
935 * fixed bug #302: better primitive-type selection for intersection
937 * fixed bug #308: non-graphic characters now all have names, as
938 required. (reported by Bruno Haible)
939 * bug fix: redefining a class with different superclasses now correctly
940 removes it from the direct-subclasses of its previous superclasses.
941 (reported by David Morse)
942 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
943 new value now works. (reported by Bruno Haible)
944 * bug fix: correct canonicalization of multiple non-standard slot
945 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
946 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
947 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
948 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
949 now exists, an signals an error.
950 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
951 during macroexpansion for non-iteration variables as well. (reported
952 by Bruno Haible for CMUCL)
953 * bug fix: Cyclic structures and unprintable objects in compiler
954 messages no longer cause errors. (reported by Bruno Haible)
955 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
956 and READ-FROM-STRING all now return a primary value of NIL if
957 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
958 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
959 (reported by Bruno Haible for CMUCL)
960 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
961 do not designate a condition. (reported by Bruno Haible for
963 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
964 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
965 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
966 permitting resolution in favour of any of the conflicting symbols.
967 (reported by Bruno Haible for CMUCL)
968 * bug fix: EQUAL compiler optimizations is less aggressive on
969 strings which can potentially compare true despite having distinct
970 specialized array element types.
971 * bug fix: unit enumerations can be defined without dividing by
972 zero. (thanks to Vincent Arkesteijn)
973 * FORMAT compile-time argument count checking has been enhanced.
974 (report from Bruno Haible for CMUCL)
975 * a partial workaround for the bug 262: the compiler does not try to
976 inline-expand a local function doing RETURN-FROM from a deleted
977 BLOCK. (thanks to Peter Denno for the bug report and to David
978 Wragg for the simple test case)
979 * fixed some bugs revealed by Paul Dietz' test suite:
980 ** RENAME-PACKAGE allows all package designators as new package
982 ** constraint propagation and lambda variable substitution are
983 more cautious in dealing with partially deleted code.
984 ** compiler sometimes lost reoptimization passes.
985 ** CERROR, given a condition as condition designator, passes its
986 remaining arguments to the continue format control without
988 ** Case-altering FORMAT directives work correctly on non-ASCII
990 ** The REAL type specifier handles bounds outside the floating
991 point ranges without signalling FLOATING-POINT-OVERFLOW.
992 ** Functions with IR1-transformations can create intercomponent
993 references to global functions.
994 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
996 ** FORMAT ~R treats a nil value for its first parameter correctly.
998 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
999 * enhancement: saving cores with foreign code loaded is now
1000 supported on x86/NetBSD and sparc/Linux in addition to the previously
1001 supported platforms.
1002 * bug fix: on some platforms repeated installations caused multiple
1003 copies of HTML documentation to be installed -- should not happen
1004 any more. (reported by Stefan Scholl)
1005 * bug fix: parsing self-recursive alien record types multiple times
1006 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1007 original patch by Helmut Eller for CMUCL)
1008 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1009 (thanks to Richard Kreuter)
1010 * bug fix: defining classes whose accessors are methods on existing
1011 generic functions in other (locked) packages no longer signals
1012 bogus package lock violations. (reported by François-René Rideau)
1013 * bug fix: special variables as DEFMETHOD parameters no longer have
1014 associated bogus type declarations. (reported by David Wragg and
1016 * bug fix: read-write consistency on streams of element-type
1017 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1018 * bug fix: redefiniton of the only method of a generic function with
1019 no DEFGENERIC no longer emits a full WARNING. In addition,
1020 redefinition of generic functions with no DEFGENERIC to an
1021 incompatible lambda list now signals an error. (thanks to Zach
1023 * bug fix: DEFGENERIC now works even when there's a function of the
1024 same name in an enclosing lexical environment. (thanks to Zach
1026 * fixed compiler failure, caused by instrumenting code during
1027 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1028 * optimization: added loop analysis and improved register allocation
1029 * fixed some bugs revealed by Paul Dietz' test suite:
1030 ** POSITION on displaced vectors with non-zero displacement
1031 returns the right answer.
1032 ** (SIMPLE-STRING) is a valid type specifier for sequence
1034 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1036 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1037 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1039 ** The justification version of the FORMAT ~< directive treats
1040 non-zero minpad parameter correctly.
1042 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1043 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1044 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1045 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1046 the supported interface.
1047 * new feature: Single-stepping of code compiled with DEBUG 2 or
1048 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1049 * new feature: saving cores with foreign code loaded is now
1050 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1051 Timothy Moore's work for CMUCL)
1052 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1053 parameters to * instead of NIL if no initform is supplied.
1054 (reported by Johan Bockgaard)
1055 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1056 correctly when FUNCALL appears as the car of the form. Note:
1057 despite this FUNCALL forms are not currently subject to
1058 compiler-macro expansion. (port of Raymond Toy's fix for the
1059 same from CMUCL, reported by Johan Bockgaard)
1060 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1061 (thanks for Teemu Kalvas)
1062 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1063 case instead of terminating the iteration (thanks for Julian
1064 Squires, Sean Champ and Raymond Toy)
1065 * bug fix: incorrect expansion of defgeneric that caused a style
1066 warning. (thanks for Zach Beane)
1067 * bug fix: slot accessor effective method computation works properly
1068 for classes with multiple non-standard applicable methods on
1069 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1070 * on x86 compiler supports stack allocation of results of LIST and
1071 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1072 CMUCL implementation by Gerd Moellmann)
1073 * fixed some bugs revealed by Paul Dietz' test suite:
1074 ** FORMAT strings with both the ~<~:;~> form of the justification
1075 directive and pretty-printing directives cause an error.
1077 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1078 * incompatible change: the internal functions
1079 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1080 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1081 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1082 instead of the old functions.
1083 * new feature: on platforms where "dladdr" is available foreign
1084 function names now appear in backtraces. (based on Helmut Eller's
1086 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1087 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1089 * documentation: ASDF manual is now distributed with SBCL.
1090 * bug fix: SBCL can now load its contributed modules with REQUIRE
1091 even if the system-provided entries have been removed from
1092 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1094 * bug fix: backtraces involving undefined functions or assembly
1095 routines are more informative. (thanks to Brian Downing)
1096 * bug fix: mutually referent alien structures now work correctly.
1097 (reported by Rick Taube)
1098 * bug fix: structures defined by WITH-ALIEN can be referred to
1099 within other definitions in the same WITH-ALIEN.
1100 * bug fix: division operators (MOD, TRUNCATE and the like) with
1101 constant zero divisors and integer dividends no longer generate
1103 * bug fix: provide default methods for INPUT-STREAM-P and
1104 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1105 * bug fix: improve the detection and resolution of MOP metacycles
1106 (where effective method computation depends on the generic function
1107 having its effective method computed). (reported by Bruno Haible)
1108 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1109 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1110 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1111 * bug fix: pathnames with relative directory components can be
1112 represented relative to default pathnames.
1113 * optimization: in taking the GCD of bignums, reduce the two bignums
1114 to approximately the same size (using Euclid's algorithm) before
1115 applying the more sophisticated binary GCD. (thanks to Juho
1117 * optimization: COUNT on bitvectors now operates word-at-a-time.
1118 * optimization: ASH with a positive, but not necessarily constant,
1119 (leftwards) shift, when in a modular context, is compiled to a
1121 * fixed some bugs revealed by Paul Dietz' test suite:
1122 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1123 if the corresponding argument is NIL.
1124 ** FORMAT directives accepting a minpad parameter treat negative
1126 ** literal commas as character parameters to FORMAT directives are
1128 ** literal spaces directly after ~<Newline> directives within a
1129 format-logical-block (~:< ~@:>) do not induce :FILL-style
1130 conditional newlines.
1131 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1132 as specified: it no longer includes conditional newlines).
1133 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1135 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1136 :PER-LINE-PREFIX argument does not evaluate to a string.
1138 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1139 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1140 the manual for details; for now, package locks can be disabled by
1141 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1142 if no major problems are found then it is likely that they will be
1143 compiled in unconditionally.
1144 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1145 unsupported operators on all platforms. To load a shared library
1146 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1147 object file, link it into a shared library outside of SBCL and
1148 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1150 * bug workaround: ROOM T and the GC were not working together
1151 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1152 reporting facility aren't preserved. That reporting has been
1153 disabled, so now until and unless someone figures out how to make it
1154 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1155 * minor incompatible change: as threatened around sbcl-0.8.0, the
1156 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1157 The symbols are also exported from SB-PCL for backwards
1158 compatibility, but more so than before SB-PCL should be treated as
1159 an implementation-internal package.
1160 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1162 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1163 It is known as of this release not to work on the Alpha, however.
1164 * fixed bug #167: errors signalled due to illegal syntax in method
1165 bodies are now more legible.
1166 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1167 designators and can hence be used with TYPEP.
1168 * fixed bug #333: CHECK-TYPE now ensures that the type error
1169 signalled, if any, has the right object to be accessed by
1170 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1171 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1172 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1174 * fixed bug #334: programmatic addition of slots using specialized
1175 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1176 and :ALLOCATION :CLASS slots.
1177 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1178 float exponents. (rereported by Peter Seibel)
1179 * fixed a bug: #\Space (and other whitespace characters) are no
1180 longer considered to be macro characters in standard syntax by
1181 GET-MACRO-CHARACTER.
1182 * fixed bug: initialization of condition class metaobjects no longer
1183 causes an instance of the condition to be created. (reported by
1185 * fixed bug: it is now possible to have slots such that
1186 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1187 description is neither :INSTANCE nor :CLASS.
1188 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1189 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1190 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1191 non-standard SLOT-DEFINITION-ALLOCATION values.
1192 * fixed bugs: various race conditions handling exiting threads.
1193 CL-PPCRE's thread torture test now passes.
1194 * fixed arguably-a-bug: GC time proportional to number of threads in
1195 system even when most of them are idle
1196 * optimization: improved performance of BIT and SBIT on bit-vectors.
1197 * .fasl file incompatibility: The fasl file version number has
1198 been incremented because of changes associated with package locks.
1200 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1201 * minor incompatible change: the system no longer provides
1202 optimization hints (conditions which are TYPEP
1203 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1204 mode; these hints are still emitted when higher SPEED optimization
1206 * new contrib module: a sampling profiler (profiling by statistical
1207 sampling, rather than by instrumenting functions) is available as
1208 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1209 * the behaviour of the standard function ED is now customizeable by
1210 third parties through a hook variable: see ED's documentation
1211 string for information on the protocol.
1212 * the compiler no longer emits efficiency notes for (FUNCALL X)
1213 when the type of X is uncertain under default optimization
1215 * fixed bug 276: mutating a binding of a specialized parameter to a
1216 method to something that is not TYPEP the specializer is now
1218 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1219 exhibit the required behaviour on the x86 platform. (thanks to
1220 Peter van Eynde, Eric Marsden and Bruno Haible)
1221 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1222 even for difficult arguments. (reported by Peter Graves)
1223 * fixed bug 141a: the backquote printer now descends quoted
1225 * fixed another bug in backquote printing: no more destructive
1226 modification of the form's list structure. (reported by Brian
1228 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1229 move between its address being taken and the call to
1230 interrupt_thread, fixing a crashing race condition.
1231 * the SB-POSIX contrib implementation has been adjusted so that it
1232 no longer exhibits ridiculously poor performance when constructing
1233 instances corresponding to C structs.
1235 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1236 * minor incompatible change: the sb-grovel contrib now treats C
1237 structures as alien (in the sense of SB-ALIEN) objects rather than
1238 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1239 has implications for memory management of client code
1240 (sb-grovel-returned objects must now be manually managed) and for
1241 type safety (alien objects now have full types).
1242 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1243 used to control emission of compiler diagnostics, rather than the
1244 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1245 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1246 quality should be considered deprecated.
1247 * install.sh now installs the user manual as well
1248 * (not quite a new documentable feature, but worth considering in
1249 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1250 beginnings of a semantically meaningful condition hierarchy is
1251 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1253 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1254 designator as the defaults argument.
1255 * fixed bug: Displaced arrays whose displaced-to array has become
1256 too small now cause ARRAY-DIMENSION to signal an error, providing
1257 for safer bounds-checking. (reported by Bruno Haible)
1258 * fixed bug: DEFCLASS slot definitions with identical :READER and
1259 :WRITER names now signal a reasonable error. (reported by Thomas
1261 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1263 * fixed bug: Invalid slot specification errors now print correctly.
1264 (thanks to Zach Beane)
1265 * fixed bug 320: Shared to local slot value transfers in class
1266 redefinitions now happen corrently from superclasses as
1267 well. (reported by Bruno Haible)
1268 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1270 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1271 improper lists correctly. (reported by Bruno Haible)
1272 * fixed bug 313: source-transform for <fun-name> was erroneously
1273 applied to a call of a value of a variable with name <fun-name>.
1274 (reported by Antonio Menezes Leitao)
1275 * fixed bug 307: The obsolete instance protocol ensures that
1276 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1277 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1278 remove dead unknown-values globs from the middle of the stack.
1279 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1280 easier to resume long computations after using *BREAK-ON-SIGNALS*
1281 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1282 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1283 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1284 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1285 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1286 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1288 * fixed a (fairly theoretical) bug in string printing: if
1289 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1290 does not have array-element-type equal to the most general string
1292 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1293 function name. (thanks to Nikodemus Siivola)
1294 * fixed bug: compile-time format string checker failed on
1295 non-closed ~{. (reported by Thomas F Burdick)
1296 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1297 don't warn on legal loop code involving more than one aggregate
1298 boolean. (thanks to Nikodemus Siivola)
1299 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1300 in keyword position to MAKE-PACKAGE was not being reported as
1302 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1303 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1305 * fixed bugs 280 and 312: the checking for multiple definitions in a
1306 file is less likely to become confused by uses of inline
1308 * fixed bug: the #S reader macro performs the keyword coercion
1309 specified for slot names. (reported by Kalle Niemitalo)
1310 * fixed bug: lambda lists may contain symbols whose names start with
1311 & but are not lambda-list-keywords; their occurrence triggers a
1313 * fixed bug 321: define-method-combination argument lambda lists do
1314 not cause invalid code to be generated when &optional or &aux
1315 variables have default values. (reported by Bruno Haible)
1316 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1317 have CLOS classes; this appears also to have fixed reported
1318 instability in stack exhaustion detection.
1319 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1320 MUFFLE-WARNING when no associated restart is present is now
1322 * optimization: rearranged the expansion of various defining macros
1323 so that each expands into only one top-level form in a
1324 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1326 * optimization: used a previously little-used slot in symbols to
1327 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1329 * fixed some bugs revealed by Paul Dietz' test suite:
1330 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1332 ** Fixed an optimization bug related to inheritance of initforms
1333 from local to shared slots.
1334 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1335 ** CAST optimizer forgot to flush argument derived type.
1336 ** print/read consistency on floats is now orders of magnitude
1337 more likely. (thanks also to Bruno Haible for a similar report
1339 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1340 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1341 for objects of type REAL. Make it so.
1342 ** SXHASH is specified (infelicitously) to respect similarity,
1343 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1344 it so. (thanks to Markus Ziegler)
1345 ** on the Alpha, the compiler succeeds in compiling functions
1346 returning a known number of arguments greater than 63.
1347 ** fixed handling of invalid NIL arguments in keyword position
1349 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1351 ** provided a readably-printable representation for RANDOM-STATE
1353 ** ensured that pathnames, where they have a namestring, always
1354 print using #P"..." syntax.
1356 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1357 * Support for the forthcoming 2.0 version of the NetBSD kernel
1358 running on x86 hardware has been added. (thanks to Perry
1359 E. Metzger most immediately, and others for their past work)
1360 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1361 current release version; SBCL's OpenBSD support had been broken
1362 since about the time of OpenBSD's switch to ELF binary format.)
1363 * [placeholder for DX summary]
1364 ** user code with &REST lists declared dynamic-extent, under high
1365 speed or space and low safety and debug optimization policy.
1366 * The manual has been converted to Texinfo format and the debugger
1367 chapter from the cmucl manual has been added.
1368 * A facility has been added to extract documentation strings from
1369 sbcl and store them as Texinfo-formatted snippets for inclusion in
1370 the manual (via Texinfo's @include directive)
1371 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1372 the test case to Dave Roberts)
1373 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1374 pointers. (reported by Sean Ross)
1375 * bug fix: PROFILE output is printed nicely even for large numerical
1376 values. (thanks to Zach Beane)
1377 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1378 greater than 32 handle EOF correctly.
1379 * bug fix: on X86 an immediate argument of the IMUL instruction is
1380 correctly printed in disassembly. (thanks to Lutz Euler)
1381 * bug fix: class slots in redefined classes preserve their old
1382 values. (thanks to Bruno Haible and Nikodemus Siivola)
1383 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1384 succeeds. (reported by Marco Baringer)
1385 * fixed some bugs revealed by Paul Dietz' test suite:
1386 ** READ-SEQUENCE now works on ECHO-STREAMs.
1387 ** RATIONALIZE works more according to its specification. (thanks
1390 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1391 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1392 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1393 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1394 should matter to you only if you rebind the printer control
1395 variables and then find you want different bindings in the
1396 debugger than in the ordinary execution of your program.)
1397 * The runtime build system has been tweaked to support building
1398 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1399 assembler and linker. (thanks to Nikodemus Siivola)
1400 * Unbound, undefined, undeclared variables now trigger full
1401 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1402 more often programmer error than deliberate exploitation of undefined
1404 * optimization: the hash algorithm for strings has changed to one
1405 that is less vulnerable to spurious collisions. (thanks to Juho
1407 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1408 needless bounds checking. (thanks to Juho Snellman)
1409 * optimization: implemented multiplication as a modular
1410 (UNSIGNED-BYTE 32) operation on the PPC backend.
1411 * fixed some bugs revealed by Paul Dietz' test suite:
1412 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1414 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1415 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1416 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1418 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1420 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1422 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1423 their output stream on EOF from read.
1424 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1425 have been read to end-of-file.
1426 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1428 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1429 description of determination of which consecutive characters
1431 ** Printing the "Space" character with escaping on now yields "#\\ ",
1432 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1433 ** Reading floating-point numbers with *READ-BASE* set to a number
1434 less than 10 works correctly.
1435 ** Reading floating-point numbers with *READ-BASE* set to a number
1436 more than 10 works correctly.
1437 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1438 the readtable currently in effect.
1440 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1441 * minor incompatible change: parsing of namestrings on a physical
1442 (Unix) host has changed; numbers after the final #\. in a
1443 namestring are no longer interpreted as a version field. This is
1444 intented to be largely invisible to the user, except that the
1445 meaning of the namestring "*.*.*" has changed: it now refers to a
1446 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1447 should usually be replaced by
1448 (make-pathname :name :wild :type :wild :version :wild)
1449 with the added benefit that this is more likely to be portable.
1450 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1451 option to OPEN now signals an error if the file being opened
1452 exists; this may have an impact on existing code.
1453 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1454 signals received, on the PowerPC platforms (both Linux and
1455 Darwin). (thanks to Pierre Mai for pointing out the location of
1457 * several fixes on OS X: The system now builds and runs cleanly on
1458 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1459 (thanks to Brian Mastenbrook)
1460 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1461 second-resolution: integer multiples of 1/3600 between -24 and 24.
1462 (thanks to Vincent Arkesteijn)
1463 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1464 type when called with 1 argument; PEEK-CHAR checked type of
1465 PEEK-TYPE only after having read first character from a
1466 stream. (reported by Peter Graves)
1467 * bug fix: the garbage collector now has much better locality
1468 behaviour, and in particular no longer treats all memory as being
1469 exhausted when many small objects point to each other in a deeply
1471 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1472 recognized as being TYPEP their class.
1473 * bug fix: the PUSHNEW documentation string has been corrected.
1474 (thanks to Vincent Arkesteijn)
1475 * bug fix: defaulting of the value for the last of an atypically
1476 large number of multiple values being bound was not being
1477 performed correctly on the Alpha or PPC platforms
1478 * optimization: implemented multiplication as a modular
1479 (UNSIGNED-BYTE 32) operation on the x86 backend.
1480 * optimization: SEARCH on simple-base-strings can now be open-coded.
1481 (see also contrib/compiler-extras.lisp for inspiration for
1482 teaching the compiler about the Boyer-Moore algorithm).
1483 * value, returned by MAX (and MIN) called with several EQUALP, but
1484 not EQL, arguments now does not depend on compiler settings.
1485 * fixed some bugs revealed by Paul Dietz' test suite:
1486 ** in stack analysis liveness information is propagated from
1487 non-local entry points.
1488 ** pathwise CAST removing failed when the CAST node did not start
1490 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1491 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1493 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1494 host is already defined.
1495 ** RENAME-FILE works on streams instead of signalling an internal
1497 ** PEEK-CHAR uses the current readtable when determining whether
1498 or not a character is whitespace.
1499 ** MERGE-PATHNAMES handles the case when the pathname does not
1500 specify a name while the default-pathname specifies a version.
1501 ** Pathnames now stand a better chance of respecting print/read
1503 ** Attempting to use standardized file system operators with a
1504 pathname with invalid :DIRECTORY components signals a
1506 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1508 ** DIRECTORY on logical pathnames is more correct.
1509 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1510 signal a TYPE-ERROR if their argument is not a stream.
1511 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1512 designator argument does not designate a stream.
1513 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1514 examining the synonym.
1515 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1517 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1518 element-type larger than ([UN]SIGNED-BYTE 32).
1520 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1521 * When built with the :SB-FUTEX feature, threaded builds now take
1522 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1523 for faster/more reliable mutex and condition variable support.
1524 * Incompatible change (but one you probably shouldn't have been using
1525 anyway): the interface and code for arbitrating between multiple
1526 threads in the same user session has been redesigned.
1527 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1528 error when called without an explicit environment argument.
1529 (thanks to Nikodemus Siivola)
1530 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1531 confused about their position. (thanks to Adam Warner and Gerd
1533 * bug fix: Pretty printing backquoted forms with unquotations in the
1534 argument list position of various code constructs such as LAMBDA
1535 now works correctly. (reported by Paul Dietz)
1536 * bug fix: Pretty printing unquotations no longer loses all
1537 stream position information.
1538 * optimization: performance of string output streams is now less
1539 poor for multiple small sequence writes.
1540 * optimization: performance of CSUBTYPEP in the presence of complex
1541 expressions involving CONS and NOT many times has been improved.
1542 (reported by Paul Dietz)
1543 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1545 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1546 streams for the REPL, for the debugger, and so on. (thanks to
1548 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1549 * fixed some bugs revealed by Paul Dietz' test suite:
1550 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1551 is ignored if it is too small, rather than propagating through
1552 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1553 ** extremely complex negations of CONS types were not being
1554 sufficiently canonicalized, leading to inconsistencies in
1556 ** VALUES tranformer lost derived type.
1558 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1559 * fixed a bootstrapping bug: the build process no longer assumes
1560 that the various BOOLE-related constants have the same value in
1561 host and target lisps. (noted by Paul Dietz' test suite on an
1562 SBCL binary built from CLISP)
1563 * The system can now be dynamically linked on the MIPS platform,
1564 which enables dynamic loading of foreign code from Lisp. (thanks
1565 to Ralf Baechle for discussions on the MIPS ABI)
1566 * The system now records debugging information for its own source
1567 files in a filesystem-position-independent manner, relative to
1568 the "SYS" logical host.
1569 * fixed a compiler bug: MV-LET convertion did not check references
1570 to the "max args" entry point. (reported by Brian Downing)
1571 * tweaked disassembly notes to be less confident about proclaiming
1572 some instruction as an LRA. (thanks to Brian Downing)
1573 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1574 now each have their own history, command character, and other
1575 characteristics. (thanks to David Lichteblau)
1576 * fixed some bugs revealed by Paul Dietz' test suite:
1577 ** compiler failure in compiling LOGAND expressions including a
1579 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1580 shift greater than 32.
1581 ** FLUSH-DEST did not mark blocks for type check regeneration.
1582 ** HANDLER-CASE failed to accept declarations in handler clauses
1583 in some circumstances.
1585 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1586 * New code in contrib/sb-introspect (still probably not entirely
1587 stable yet) provides some support for smart Lisp development
1588 environments like SLIME.
1589 * The conditions signalled for errors occurring when loading .fasl
1590 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1591 in a way which should help ASDF recover gracefully.
1592 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1593 stuff has been cleaned up. If you code contrib/ stuff, this might
1594 affect you, and you can look at contrib/README, contrib/STANDARDS,
1595 and/or the 0.8.4.27 diff to check.
1596 * In full calls the compiler now does not generate checks for declared
1597 argument types for all arguments.
1598 * various threading fixes
1599 ** and some experimental patches which didn't make it into
1600 the main tree for this release, but which are shipped in
1601 contrib/experimental-thread.patch as a possible fix for some
1602 failures (deadlock, spinning...) in GC-intensive multithreaded
1604 * fixed PPC build problem (source code incompatibility of different
1605 library versions): added offsetof() hackery which attempts to divine
1606 where glibc maintainers put uc_mcontext today
1607 * fixed bug 282: compiler does not trust type assertions while passing
1608 arguments to a full call.
1609 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1610 &OPTIONAL VALUES type parameter.
1611 * fix bug 214: algorithm for noting rejected templates is now more
1612 similar to that of template seletion. (also reported by rydis on
1614 * fixed bug 141b: printing backquoted information readably and prettily
1615 inserts a space where necessary.
1616 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1617 (CHARACTER 10) are now reported as errors, rather than propagated
1618 as unknown types. (reported by piso on #lisp)
1619 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1620 with values NIL and :ERROR. (thanks to Milan Zamazal)
1621 * fixed bug 191c: CLOS now does proper keyword argument checking as
1622 described in CLHS 7.6.5 and 7.6.5.1.
1623 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1624 longer raise an error; further, using a list as a for-as-arithmetic
1625 counter now raises a meaningful error.
1626 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1627 now understood by sequence creation functions such as MAKE-SEQUENCE
1629 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1630 a STRING-INPUT-STREAM.
1631 * compiler enhancement: SIGNUM is now better able to derive the type
1633 * type declarations inside WITH-SLOTS are checked. (reported by
1635 * fixed some bugs revealed by Paul Dietz' test suite:
1636 ** incorrect optimization of TRUNCATE for a positive first
1637 argument and negative second.
1638 ** compiler failure in let-convertion during flushing dead code.
1639 ** compiler failure while deriving type of TRUNCATE on an
1640 interval, containing 0.
1641 ** ASH of a negative bignum by a negative bignum count now returns
1643 ** intersection of CONS types now canonicalizes properly, fixing
1644 inconsistencies in SUBTYPEP.
1646 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1647 * incompatible change: The --disable-debugger command line
1648 option now clobbers the debugger at a more fundamental
1649 level, by redefining #'INVOKE-DEBUGGER instead of by
1650 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1651 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1652 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1653 enter the debugger REPL and then suffer recursive errors
1654 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1655 while under the new system, BREAK in --disable-debugger mode
1656 terminates the system just as an unhandled error would.
1657 * fixed compiler performance when processing loops with a step >1;
1658 * bug fix: DOCUMENTATION now retrieves generic function
1659 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1660 support has been systematized, and now supports the methods
1661 specified by ANSI, along with a default method and a method for
1662 slot documentation. (reported by Nathan Froyd)
1663 * bug fix: effective methods associated with a generic function are
1664 no longer cached over a change of that generic function's method
1665 combination. (reported by Andreas Fuchs)
1666 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1667 names a non-existent directory. (thanks to Andreas Fuchs)
1668 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1669 the PPC platform, lead to stack corruption; this has been fixed.
1670 (reported by Rainer Joswig)
1671 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1672 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1673 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1674 arithmetic in general, is now much more reliable on the PPC
1676 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1677 platform now returns the right answer.
1678 * optimization: restored some effective method precomputation in
1679 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1680 precomputation is now tunable.
1681 * optimization: compiler-internal data structure use has been
1682 reviewed, and changes have been made that should improve the
1683 performance of the compiler by about 20%.
1684 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1685 simple-base-strings and simple-bit-vectors is improved.
1686 * optimization: the optimization of 32-bit logical and arithmetic
1687 functions introduced in version 0.8.3 on the x86 has been
1688 implemented on the mips, ppc and sparc platforms; an
1689 implementation of the same facility, but for 64-bit arithmetic,
1690 has been added for the alpha.
1691 * microoptimization: the compiler is better able to make use of the
1692 x86 LEA instruction for multiplication by constants.
1693 * bug fix: in some situations compiler did not report usage of
1694 generic arithmetic in (SPEED 3) policy.
1695 * bug 145b fix: compiler used wrong type specifier while converting
1696 MEMBER-types to numeric.
1697 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1699 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1700 index argument now works properly on the Alpha platform.
1701 * bug fix: floating point exception treatment on the Alpha platform
1703 * bug fix: FILE-POSITION works much better on string input and
1704 output streams. (thanks to Nikodemus Siivola)
1705 * bug fix: many threading/garbage collection symptoms sorted.
1706 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1707 might be pseudo-atomic.
1708 * internal change: Stopping for GC is now done with signals not
1709 ptrace. GC is now done in whichever thread wanted it, instead of
1711 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1713 * bug fix: result form in DO is not contained in the implicit
1715 * incompatible change: ICR structure is changed; the value part of
1716 CONTINUATION is now called LVAR; corresponding functions are
1717 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1718 * added type deriver for ISQRT (thanks to Robert E. Brown).
1719 * bug fix: better support for loading from the command line when an
1720 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1722 * fixed some bugs revealed by Paul Dietz' test suite:
1723 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1724 ** ROUND and FROUND now give the right answer when given very
1725 small float arguments.
1726 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1728 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1729 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1730 ** LCM should return a non-negative integer.
1731 ** PARSE-INTEGER returned the index of a terminator instead of the
1732 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1733 ** PARSE-INTEGER returned an incorrect index being applied to a
1735 ** LCM with two arguments of 0 returns 0 rather than signalling
1737 ** unsigned addition of a 32-bit constant with the high bit set no
1738 longer causes an internal compiler error on the x86.
1739 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1740 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1741 with negative last argument.
1742 ** byte specifiers with zero size and position no longer cause
1743 an error during type derivation.
1744 ** bignum multiplication on the Alpha platform now returns the
1746 * porting: The system now builds on SuSE AMD64, although it still
1747 generates a 32-bit binary.
1748 * .fasl file incompatibility: The fasl file version number has
1749 been incremented (because of the changes to internal compiler
1750 data structures referred to above).
1752 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1753 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1754 more accurately, on the Darwin kernel running on PowerPC hardware.
1755 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1756 * Compiler code deletion notes now signal a condition of type
1757 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1758 an associated MUFFLE-WARNING restart.
1759 * The compiler now performs limited argument count validation of
1760 constant format strings in FORMAT, and where appropriate in ERROR,
1761 CERROR and WARN. (thanks to Gerd Moellmann)
1762 * New ASDF-INSTALL contrib can be used for automatic download and
1763 installation of third-party Lisp code from CCLAN or other sites
1765 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1766 which forces another thread to execute a function supplied by the
1768 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1769 now accept and act upon their :ELEMENT-TYPE keyword argument.
1770 (reported by Martin Atzmueller, Edi Weitz)
1771 * bug fix: FILE-POSITION now accepts position designators up to
1772 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1773 is the greater. (thanks to Patrik Nordebo)
1774 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1775 Kalle Olavi Niemitalo)
1776 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1777 printable. (reported by Eric Marsden)
1778 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1779 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1780 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1781 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1782 (thanks to Stig Sandoe)
1783 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1784 UNREAD-CHAR now correctly includes the unread character in the
1785 target sequence. (thanks to Gerd Moellmann)
1786 * bug fix in threaded builds: the system can now be suspended and
1787 resumed by shell job control with minimal disruption.
1788 * bug fixes in times and timezones >2038AD
1789 * better handling of "where is GNU make?" problem in build scripts
1790 (thanks to Nikodemus Siivola)
1791 * new optimization: inside a named function any reference to a
1792 function with the same name is considered to be a self-reference;
1793 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1794 optimization quality.
1795 * new optimization on x86: logical functions and + now have
1796 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1797 used when the result is truncated to 32 bits.
1798 * VALUES declaration is partially enabled.
1799 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1800 * fixed some bugs revealed by Paul Dietz' test suite:
1801 ** The system now obeys the constraint imposed by
1802 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1803 types form a lattice under type intersection.
1804 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1805 ** ASSOC now ignores NIL elements in an alist.
1806 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1807 and (1+ MOST-POSITIVE-FIXNUM) answers.
1808 ** The addition of a method with invalid qualifiers to a generic
1809 function does not cause an error to be signalled immediately;
1810 a warning is signalled, and the error is generated only on
1811 calling the generic function.
1812 * changed .fasl file version number, in part to add type codes for
1813 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1814 obscure ANSI requirements
1816 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1817 * fixed bug 148: failure to inline-expand a local function left
1818 garbage, confusing the compiler.
1819 * fixed bugs 3cd: structure slot readers perform type check if the
1820 slot can have an invalid value (i.e. it is either not initialized
1821 or can be written with a less specific slot writer).
1822 * bug fix: the compiler now traps array references to elements off
1823 the end of an array; previously, the bounds checking in some
1824 circumstances could go off-by-one.
1825 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1827 * type declarations for array element types now obey the description
1828 on the CLHS page "Declaration TYPE", as per discussions on
1829 sbcl-help around 2003-05-08. This means that a declaration
1830 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1831 declaration, all references to BAR will be asserted or assumed
1832 (with THE, so dependent on compiler policy) to involve objects of
1833 type FOO. Note that no such declaration is implied in
1834 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1835 * declared types of functions from the "Conditions"
1836 chapter. (reported by Paul Dietz)
1837 * bug fix: CERROR accepts a function as its first argument.
1838 * bug fix: NTH an NTHCDR accept a bignum as index
1839 arguments. (reported by Adam Warner)
1840 * optimization: character compare routines now optimize comparing
1841 against a constant character. (reported by Gilbert Baumann)
1842 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1843 argument now works properly on the MIPS platform.
1844 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1845 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1846 declared to have a functional type, does not cause an error
1848 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1849 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1850 * fixed bug: if last continuation of a deleted block has a
1851 destination, this destination should be deleted too. (reported by
1853 * fixed a bug in the bootstrap process: the host compiler's values
1854 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1855 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1856 test case from Patrik Nordebo)
1857 * improved the ability of the disassembler on the PPC platform to
1858 provide helpful disassembly notes.
1859 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1860 the class in more cases than previously.
1861 * bug fix: FILE-POSITION now understands :START and :END for
1862 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1863 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1864 8) data. (thanks to David Lichteblau)
1865 * bug fix: it is possible to add a method to a generic function
1866 without lambda list.
1867 * bug fix: reader failed to signal END-OF-FILE inside an
1868 object representation. (reported by Nikodemus Siivola)
1869 * fixed some bugs revealed by Paul Dietz' test suite:
1870 ** LAST and [N]BUTLAST should accept a bignum.
1871 ** condition slot accessors are methods.
1872 ** (VECTOR NIL) is a subtype of STRING.
1874 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1875 * minor incompatible change: some nonsensical specialized lambda
1876 lists (used in DEFMETHOD) which were previously ignored now signal
1878 * minor incompatible change: the system is now aware of the types of
1879 variables in the COMMON-LISP package, and will signal errors for
1880 most violations of these type constraints (where previously they
1881 were silently accepted).
1882 * minor incompatible change: COMPILE-FILE now uses the freedom
1883 afforded (ANSI 3.2.2.3) to use derived function types for
1884 functions defined in the same file. This also permits the system
1885 to warn on static type mismatches and function
1886 redefinition. (Currently it does not work with high DEBUG level.)
1887 * minor incompatible change: VALUES declaration is disabled.
1888 * When issuing notes, the compiler now signals a condition of type
1889 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1890 restart for use in user handlers. It is expected that the
1891 COMPILER-NOTE condition will eventually become a condition
1892 supertype to a hierarchy of note types, which will then be
1893 handleable in a similar fashion. However, at the moment, no such
1894 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1895 but it's an implementation detail, not a classification for the
1897 * Changes in type checking closed the following bugs:
1898 ** type checking of unused values (192b, 194d, 203);
1899 ** template selection based on unsafe type assertions (192c, 236);
1900 ** type checking in branches (194bc).
1901 * A short form of VALUES type specifier has ANSI meaning (it has
1902 increased the number of situations when SBCL cannot perform type
1904 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1905 keywords or constants is permissible.
1906 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1907 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1908 classes. (thanks to Antonio Martinez)
1909 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1910 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1911 argument to a pretty-print stream. Instead, it leaves any such
1912 operations to DESCRIBE-OBJECT methods.
1913 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1915 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1916 lambda lists. (thanks to David Lichteblau)
1917 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1918 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1919 (thanks to Gerd Moellmann)
1920 * fixed bug 246: increased compilation speed of long
1921 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1923 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1925 * DEFCONSTANT now throws a condition of type
1926 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1927 constant to a non-EQL value; CONTINUE and ABORT restarts
1928 respectively change and preserve the value.
1929 * fixed bug 63: The code walker, part of the implementation of CLOS,
1930 is now better at handling symbol macros.
1931 * bug fix: There is no longer an internal implementation type named
1932 CL:LENGTH. (reported by Raymond Toy)
1933 * bug fix: In macro-like defining macros/special operators the
1934 implicit block does not enclose the lambda list.
1935 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1936 enclosed in parentheses) are not suitable as type specifiers, and
1937 their use properly signals an error now.
1938 * bug fix: An argument count mismatch for a type specifier in code
1939 being compiled no longer causes an unhandled error at compile
1940 time, but signals a compile-time warning.
1941 * fixed simple vector readable printing
1942 * bug fix: DESCRIBE takes more care over whether the class
1943 precedence list slot of a class is bound before accessing it.
1944 (reported by Markus Krummenacker)
1945 * bug fix: FORMATTER can successfully compile pretty-printer format
1946 strings which use variants of the ~* directive inside.
1947 * bug fix: SEARCH now applies its TEST predicate to the elements of
1948 the arguments in the correct order. (thanks to Wolfhard Buss)
1949 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1950 in type inference. (thanks to Robert E. Brown)
1951 * bug fix: Reading in symbols with an explicit package name of ""
1952 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1953 * fixed some bugs revealed by Paul Dietz' test suite:
1954 ** NIL is now allowed as a structure slot name.
1955 ** Arbitrary numbers, not just REALs, are allowed in certain
1956 circumstances in LOOP for-as-arithmetic clauses.
1957 ** Multiple class redefinitions before slot access no longer
1958 causes a type error.
1959 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1960 association between the name and a class.
1961 ** Generic functions with non-standard method-combination and over
1962 five methods all of which return constants no longer return NIL
1963 after the first few invocations. (thanks to Gerd Moellmann)
1964 ** CALL-NEXT-METHOD with no arguments now passes the original
1965 values of the arguments, even in the presence of assignment.
1966 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1968 ** DISASSEMBLE works with closures and funcallable instances.
1969 ** ADD-METHOD now returns the generic function, not the new method.
1970 ** FIND-METHOD signals an error if the lengths of the specializers
1971 is incompatible with the generic function, even if the ERRORP
1973 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1974 which its argument is a member.
1975 ** DEFCLASS only redefines the class named by its class-name
1976 argument if that name is the proper name of the class;
1977 otherwise, it creates a new class.
1978 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1979 of the UNBOUND-SLOT condition to the name of the slot.
1980 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1981 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1982 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1983 SLOT-MAKUNBOUND in the specified fashion.
1985 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1986 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1987 cross-compilation host. As a consequence, we can now bootstrap our
1988 way up to SBCL starting with a bare gcc toolchain and human-readable
1989 source code (first the source to CLISP, then the source to SBCL).
1990 * A contributed module containing a partial implementation of the
1991 simple-streams interface has been included. (thanks to Rudi
1993 * A contributed module implementing the RFC1321 Message Digest
1994 Algorithm, known as MD5, has been included.
1995 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1996 no longer has any effect, as the code controlled by this feature
1997 has been deleted. (As far as we know, no-one has ever built using
1998 this feature, and its semantics were confused in any case).
1999 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2000 work on conditions (as required by the ANSI specification),
2001 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2002 expected behaviour on conditions. Users should note, however,
2003 that such behaviour is not required by the ANSI specification,
2004 and so use of this behaviour may render their code unportable.
2005 * fixed some bugs revealed by Paul Dietz' test suite:
2006 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2008 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2009 ** SXHASH on condition objects no longer returns NIL.
2010 ** :ALLOCATION :CLASS slots are better treated; their values are
2011 updated on class redefinition, and initforms inherited from
2012 superclasses are applied.
2013 ** REMOVE-METHOD returns its generic function argument even when
2014 no method was removed.
2015 ** SHARED-INITIALIZE now initializes the values of the requested
2016 slots, including those with :ALLOCATION :CLASS.
2017 ** ALLOCATE-INSTANCE now works on structure classes defined via
2018 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2020 ** SLOT-EXISTS-P now works on conditions, as well as structures
2022 ** MAKE-LOAD-FORM now has the required methods on
2023 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2024 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2025 keyword, and now implements the SLOT-NAMES argument.
2026 ** methods with &OPTIONAL arguments no longer allow too many
2027 arguments to be passed in the call without error.
2028 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2029 option is consistent with the required arguments of the generic
2030 function lambda list.
2031 * bug fix: REQUIRE accepts a string designator. (Thanks to
2033 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2034 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2035 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2036 * bug fix: The compiler now checks for duplicated variables in macro
2038 * bug fix: SETQ on globals returns the correct value.
2039 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2040 not a COMPILER-ERROR (followed by some other strange error on
2041 choosing the CONTINUE restart).
2042 * bug fix: make.sh and friends are now more consistent in the way that
2043 they look for GNU "make".
2045 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2046 * experimental native threads support (on x86 Linux >=2.4 only).
2047 This is not compiled in by default: you need to add :SB-THREAD to
2048 the target features. See the "Beyond ANSI" chapter of the manual
2050 * fix for longstanding nonANSIism: The old distinction between
2051 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2052 The return value from CL:FIND-CLASS is now a CLOS class, and
2053 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2054 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2055 * An interface to the MetaObject Protocol, as described in Kiczales,
2056 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2057 MIT Press, 1991, is available from the SB-MOP package.
2058 * incompatible change: the SB-PCL package should now be considered
2059 a private implementation detail, and no longer a semi-private MOP
2061 * minor incompatible change: due to rearrangement for threads, the
2062 control stack and binding stack are now allocated at arbitrary
2063 addresses instead of being hardcoded per-port. Users affected by
2064 this probably have to be doing advanced things with shared
2065 libraries, and will know who they are.
2066 * minor incompatible change: Previously, all --eval forms used were
2067 processed with READ before any of them were processed with EVAL.
2068 Now each --eval form is processed with both READ and EVAL before
2069 the next --eval form is processed. (Thus package operations like
2070 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2071 work as the user might reasonably expect.)
2072 * minor incompatible change: *STANDARD-INPUT* is now only an
2073 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2075 * minor incompatible change: Y-OR-N-P is now character-oriented,
2076 not line oriented. Also, YES-OR-NO-P now works without errors.
2077 (thanks to Antonio Martinez)
2078 * sb-aclrepl module improvements: an integrated inspector, added
2079 repl features, and a bug fix to :trace command.
2080 * Known functions, which cannot be open coded by the backend, are
2081 considered to be able to check types of their arguments. (fixing
2082 a bug report by Nathan J. Froyd)
2083 * fixed a bug in computing method discriminating functions: It is
2084 now possible to define methods specialized on classes which have
2085 forward-referenced superclasses. (thanks to Gerd Moellmann)
2086 * fixed evaluation order in optional entries (reported by Gilbert
2088 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2089 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2090 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2091 required-by-AMOP NAME argument, as well as CLASS and
2092 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2093 * fixed bug 20: DEFMETHOD can define methods using names that are
2094 not the proper names of classes to designate class specializers.
2095 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2096 Unix file descriptors, instead of blowing up. (thanks to Antonio
2098 * Garbage collection refactoring: user-visible change is that a
2099 call to the GC function during WITHOUT-GCING will not do garbage
2100 collection until the end of the WITHOUT-GCING. If you were doing
2101 this you were probably losing anyway.
2102 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2103 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2104 TYPEP the latter but not the former.
2105 * The compiler issues a full WARNING for calls to undefined functions
2106 with names from the CL package.
2107 * MAP-INTO for a vector destination is open coded. (reported by
2108 Brian Downing on c.l.l)
2109 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2110 documentation string.
2111 * fixed some bugs revealed by Paul Dietz' test suite:
2112 ** COPY-ALIST now signals an error if its argument is a dotted
2114 ** Condition slots are now accessed more correctly in the presence
2115 of multiple initargs for a given slot.
2116 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2117 exclude restarts of the same name associated with a different
2119 ** DEFCLASS of forward-referenced classes with another
2120 forward-referenced class in the superclasses list no longer
2122 ** Condition slots are now initialized once each, not multiple
2123 times. (thanks to Gerd Moellmann)
2124 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2126 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2127 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2128 arguments contain duplicated elements.
2129 ** RESTART-CASE understands local macros.
2130 ** RESTART-CASE associates exactly its own restarts with a condition.
2131 ** ENDP in safe mode checks its argument to be of type LIST.
2132 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2133 in question is unbound.
2134 ** Optimized MAKE-INSTANCE functions no longer cause internal
2135 assertion failures in the presence of duplicate initargs.
2136 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2137 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2138 propagated even in the ctor optimized implementation of
2140 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2142 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2143 * a better implementation of SXHASH on (simple) bit vectors,
2144 measured both in execution speed and in distribution of results
2145 over the positive fixnums, has been installed. Likewise, a better
2146 implementation of EQUAL for simple bit vectors is now available.
2147 * fixed CEILING optimization for a divisor of form 2^k.
2148 * fixed bug 240 (emitting extra style warnings "using the lexical
2149 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2150 by Antonio Martinez)
2151 * fixed SXHASH, giving different results for NIL depending on type
2152 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2153 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2154 variable. (found by Rolf Wester)
2155 * SBCL does not ignore type declarations for special
2156 variables. (reported by rif on c.l.l 2003-03-05)
2157 * some bug fixes in contrib/sb-aclrepl/
2158 * fixed some bugs revealed by Paul Dietz' test suite:
2159 ** a bug in the CONS type specifier, whereby the CAR and CDR
2160 types got intertwined, has been fixed;
2161 ** the type system is now able to reason about the interaction
2162 between INTEGER and RATIO types more completely;
2163 ** APPEND, [N]REVERSE and NRECONC check that those their
2164 arguments, which must be proper lists, are really so;
2165 ** An array specialized to be unable to hold elements has been
2166 implemented, as required -- yes, really -- by ANSI;
2167 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2168 on malformed property lists;
2170 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2171 * incompatible packaging change: in line with Unix convention,
2172 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2173 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2174 * REQUIRE and PROVIDE are now optionally capable of doing something
2175 useful. See the documentation string for REQUIRE.
2176 * infrastructure for a managed SBCL contrib system: contributed
2177 modules in this release include:
2178 ** the ASDF system definition facility;
2179 ** an interface to the BSD Sockets API;
2180 ** an ACL-like convenience interface to the repl;
2181 (thanks to Kevin Rosenberg)
2182 ** an implementation of ROTATE-BYTE, with efficient implementation
2184 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2185 gives a closer approximation to the right answer than previously.
2186 (thanks to Raymond Toy)
2187 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2188 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2189 optional environment arguments, as required by ANSI.
2190 * fixed bugs in other functions taking environment objects, allowing
2191 calls with an explicit NIL environment argument to be compiled
2193 * fixed bug 228: primary return values from
2194 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2195 COMPILE or FUNCTION.
2196 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2197 :TYPE will no longer signal errors on innocuous objects.
2198 * fixed bug 231b: SETQ is better at respecting type declarations in
2199 the lexical environment.
2200 * fixed a bug in DEFCLASS: classes named by symbols with no or
2201 unprintable packages can now be defined.
2202 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2203 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2204 * fixed compiler failure related to checking types of functions.
2205 (reported by Robert E. Brown)
2206 * the compiler is now much more consistent in its error-checking
2207 treatment of bounding index arguments to sequence functions: in
2208 (SAFETY 3) code, errors will be signalled in almost all cases if
2209 invalid sequence bounding indices are passed to functions defined
2210 by ANSI to operate on sequences.
2211 * fixed a bug in the build procedure: documentation of SBCL-specific
2212 packages is now preserved and available in the final Lisp image.
2213 * lifted FDEFINITION lookup out of loops in the implementation of
2214 many list operations. (thanks to Robert E. Brown)
2215 * fixed a bug in the reader: the #n# reader macro now works for
2216 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2217 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2218 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2219 E. Brown and Tony Martinez respectively)
2220 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2221 SLOT-BOUNDP: in particular, it is now able to optimize them much
2222 better, and is now not vulnerable to having packages renamed.
2223 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2224 always called when a slot is not present in an instance. (thanks
2226 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2227 longer signal an error on unreading a character following EOF on
2228 the previous constituent stream. (thanks to Tony Martinez)
2229 * fixed some bugs revealed by Paul Dietz' test suite:
2230 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2231 not just nonnegative fixnums;
2232 ** the logical bit-array operators such as BIT-AND now accept an
2233 explicit NIL for their "opt-arg" argument (to indicate a
2234 freshly-consed result bit-array);
2235 ** ELT now signals an error on an invalid sequence index in safe
2237 ** the type system is now cleverer about negations of numeric
2238 types, and consequently understands the BIGNUM and RATIO types
2240 ** the type system is now cleverer about the interaction between
2241 INTEGER and RATIO types: while bugs still remain, many more
2242 cases are accurately computed;
2243 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2244 if it is in the last clause;
2245 ** CONSTANTLY now correctly returns a side-effect-free function in
2247 ** DECLARE is no longer treated as a special-operator; in
2248 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2249 * incremented fasl file version number due to the change in the
2250 DEFSTRUCT-SLOT-DESCRIPTION structure.
2252 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2253 * minor incompatible change: code processed by the "interpreter" or
2254 EVAL now has a compilation optimization policy of (DEBUG 2)
2255 (changed from (DEBUG 1)) to improve debuggability of interactive
2256 development, and to allow the use of the debug RETURN command in
2258 * an experimental implementation of the RETURN command for the
2259 debugger has been included. (thanks to Frederik Kuivinen)
2260 * fixed bug 62: constraints were not propagated into a loop.
2261 * fixed bug in embedded calls of SORT (reported and investigated by
2263 * fixed some bugs revealed by Paul Dietz' test suite:
2264 ** printing and reading of arrays with some dimensions having
2265 length 0 (thanks to Gerd Moellmann);
2266 ** BOA constructor with &AUX argument without a default value does
2267 not cause a type error;
2268 ** CONSTANTP now returns true for all self-evaluating objects.
2270 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2271 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2272 accessors that are related by inheritance, as specified in the
2273 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2274 Valtteri Vuorikoski)
2275 * The compiler is now able to inline functions that were defined in
2276 a complex lexical environment (e.g. inside a MACROLET).
2277 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2279 * Support for the upcoming FreeBSD-5.0 release has been included.
2280 (thanks to Dag-Erling Smorgrav)
2281 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2282 effect when it is not in a toplevel context.
2283 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2284 stand a better chance of being correct. (thanks to Gerd
2286 * fixed bug in COERCE, which now signals an error on coercing a
2287 rational to a bounded real type which excludes the expected
2289 * The compiler is now able to derive types more accurately from the
2290 COERCE and COMPILE functions.
2291 * fixed bug 223: functional binding is considered to be constant
2292 only for symbols in the CL package.
2293 * fixed bug 231: SETQ did not check the type of a variable being set
2294 (reported by Robert E. Brown)
2295 * A new optimization for MAKE-INSTANCE has been included, fixing
2296 various bugs (including relating to :ALLOCATION :CLASS slots and
2297 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2299 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2300 ** As required by ANSI, LOOP now disallows anonymous collection
2301 clauses such as COLLECT I in conjunction with aggregate boolean
2302 clauses such as THEREIS (= I 1);
2303 ** LOOP now signals an error when any variable is reused in the
2304 same loop (including the potentially useful construct analogous
2305 to WITH A = 1 WITH A = (1+ A);
2306 ** IT is only a special loop symbol within the first clause of a
2307 conditional loop clause;
2308 ** LOOP with a typed iteration variable over a hashtable now
2309 signals a type error iff it should.
2310 * fixed some other bugs revealed by Paul Dietz' test suite:
2311 ** FILE-STREAM now names the class previously known as FD-STREAM;
2312 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2313 argument) no longer signals an error;
2314 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2315 of the slot symbol, rather than using the current package
2316 ((:CONC-NAME "") continues to intern the slot's name in the
2318 * incremented fasl file version number, because of the incompatible
2319 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2320 of the new implementation of DEFINE-COMPILER-MACRO.
2322 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2323 * Support for building SBCL for MIPS platforms running in
2324 little-endian mode has now been checked in, and basic
2325 functionality on said platforms verified.
2326 * minor incompatible change: PCL now records the pathname of a file
2327 in which methods and the like are defined, rather than its
2329 * minor incompatible change: TRUENAME now considers the truename of
2330 a file naming a directory to be the pathname with :DIRECTORY
2331 component indicating that directory.
2332 * minor incompatible change: a NAMED clause in the extended form of
2333 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2334 reason for the previous behaviour is unclear.
2335 * more systematization and improvement of CLOS and MOP conformance
2336 in PCL (thanks to Gerd Moellman and Pierre Mai):
2337 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2339 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2340 primary methods with no specializers;
2341 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2343 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2344 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2345 FORWARD-REFERENCED-CLASSes; error reporting on
2346 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2348 ** SXHASH on CLOS instances now uses a slot internal to the
2349 instance to return different numbers on distinct instances,
2350 while preserving the same return value through invocations of
2352 ** DEFMETHOD signals errors when methods with longer incongruent
2353 lambda lists are added to generic functions;
2354 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2355 CLASS, as specified in AMOP;
2356 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2357 on the order returned by the primary method for classes of
2358 class STANDARD-CLASS;
2359 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2360 * fixed some bugs shown by Paul Dietz' test suite:
2361 ** DOLIST puts its body in TAGBODY;
2362 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2364 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2365 value producing form;
2366 ** if more variables are given to PROGV than values, extra
2367 variables are bound and made to have no value;
2368 ** NSUBSTITUTE on list arguments gets the right answer with
2370 ** ELT signals an error of type TYPE-ERROR when the index argument
2371 is not a valid sequence index;
2372 ** LOOP signals (at macroexpansion time) an error of type
2373 PROGRAM-ERROR when duplicate variable names are found;
2374 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2375 ** FUNCALL of special-operators now cause an error of type
2377 ** PSETQ now works as required in the presence of side-effecting
2378 symbol-macro places;
2379 ** NCONC accepts any object as its last argument;
2380 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2382 ** loop-for-as-package does not require a package to be explicitely
2384 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2386 * fixed bug 166: compiler preserves "there is a way to go"
2387 invariant when deleting code.
2388 * fixed bug 172: macro lambda lists with required arguments after
2389 &REST arguments now cause an error to be signalled. (thanks to
2391 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2392 bug. (thanks to Matthew Danish)
2393 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2395 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2396 arguments are lexically rebound. (thanks to Gerd Moellmann and
2398 * fixed bug 194: error messages are now more informative when there
2399 is no primary method applicable in a call to a generic
2400 function. (thanks to Gerd Moellmann)
2401 * fixed bug in command line argument checking (thanks to Julian
2403 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2404 (thanks to Matthew Danish)
2405 * incremented fasl file version number, because of the
2406 SXHASH-related changes in the layout of CLOS data structures
2408 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2409 * minor incompatible change: The runtime (the Unix executable named
2410 "sbcl") is now much pickier about the .core files it will load.
2411 Essentially it now requires .core files to descend from the same
2412 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2413 as the runtime does. (The intent is to prevent the crashes which
2414 can occur, and which can even be reported as mysterious failures,
2415 when people patch the sources or change the build parameters
2416 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2417 sbcl and .core files.)
2418 * fixed bug: VALUES-LIST is no longer optimized away.
2419 * fixed bug 142: The FFI conversion of C string values to Lisp
2420 string values no longer conses excessively. (thanks to Nathan
2421 Froyd porting Raymond Toy's fix to CMU CL)
2422 * began to systematize and improve MOP conformance in PCL (thanks to
2423 Nathan Froyd, Gerd Moellman and Pierre Mai):
2424 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2426 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2427 ** FINALIZE-INHERITANCE is now called on class finalization;
2428 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2429 argument precedence order.
2430 * fixed bug 202: The compiler no longer fails on functions whose
2431 derived types contradict their declared type.
2432 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2433 so it can be non-toplevel.
2434 * The fasl file version number has changed (because of the new
2435 implementation of DEFMACRO).
2436 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2437 safe code, that any length requirement by their type-specifier
2438 argument is valid. The exceptions to this are described in bug
2440 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2441 functions now check the types of their inputs as required by ANSI.
2442 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2443 introduced symbol is DECLAREd to be SPECIAL.
2444 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2445 * fixed bug: :COUNT argument to sequence functions may be negative
2446 * fixed bug: body of DO-SYMBOLS may contain declarations
2447 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2448 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2449 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2450 symbol macro only once
2451 * fixed printing of call frame when argument list is unavailable
2452 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2453 * compiler no longer signals WARNING on unknown keyword
2456 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2457 * A beta-quality port to the mips architecture running Linux,
2458 based on the old CMUCL backend, has been made. It has been tested
2459 on a big-endian kernel, and works sufficiently well to be able to
2460 rebuild itself; it has not been tested in little-endian mode.
2461 * fixed an inconsistency between gencgc.c and purify.c which made
2462 dumping/loading .core files unreliable
2463 * fixed bug 120a: The compiler now deals correctly with IFs where
2464 the consequent is the same as the alternative, instead of
2465 misderiving the return type. (thanks to Alexey Dejneka)
2466 * fixed bug 113: Logical pathnames are now dumpable (the logical
2467 host is resolved at load-time, throwing an error if it is not
2469 * fixed bug 174: FORMAT's error message is slightly clearer when a
2470 non-printing character is used in a format directive.
2471 * fixed several bugs in compiler checking of type declarations, i.e.
2472 violations of the Python "declarations are assertions" principle
2473 (thanks to Alexey Dejneka)
2474 * fixed several bugs in PCL's error checking (thanks to Gerd
2476 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2478 * fixed bug in compilation of functions as first class values
2479 (thanks to Antonio Martinez-Shotton)
2480 * The compiler's handling TYPE-ERRORs which it can prove will
2481 inevitably happen at runtime has been cleaned up and corrected
2482 in several ways. (thanks to Alexey Dejneka)
2483 * improved argument type checking for various basic arithmetic
2484 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2485 lavished on them in the past that they can be compiled in many
2486 ways in different special cases
2487 * fixed bug 181: compiler checks validity of user supplied type
2489 * cleaned up code flushing in optimization: Function calls which
2490 should signal errors for safety purposes (e.g. which ANSI says
2491 should signal errors when their arguments are of incorrect type)
2492 are no longer optimized away.
2493 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2494 * incremented fasl file version number, because changes in the
2495 implementation of sequence functions like COERCE caused
2496 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2497 in old inline expansions) to become undefined. (Actually these
2498 changes were later undone, so we might very well be binary
2499 compatible with 0.7.7 after all, but leaving the version number
2500 incremented seemed like the simplest and most conservative
2503 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2504 * An alpha-quality port to the parisc architecture running Linux,
2505 based on the old CMUCL backend, has been made. This, even more so
2506 than the other backends, should be considered still a work in
2507 progress; known problems include that the Linux kernel in 64-bit
2508 mode does not propagate the correct sigcontext structure to
2509 userspace, and consequently SBCL on a parisc64 kernel will not
2511 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2512 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2513 suppressed.) Also now that the compiler is looking at declarations
2514 in the environment, it checks optimization declarations as well,
2515 and suppresses inlining when (> DEBUG SPEED).
2516 * More fixes have been made to treatment of floating point exception
2517 treatment and other Unix signals. In particular, floating point
2518 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2519 * The detection and handling of control stack exhaustion (infinite
2520 or very deeply nested recursion) has changed. Stack exhaustion
2521 detection is now done by write-protecting pages at the OS level
2522 and applies at all optimization settings; when found, a
2523 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2524 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2525 be caught using IGNORE-ERRORS.
2526 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2527 correctly when transforming recursive LABELS functions to LETs.
2528 (thanks to Alexey Dejneka)
2529 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2530 that are names of constants or global variables.
2531 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2532 alien routines with docstrings.
2533 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2534 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2536 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2537 (thanks to Eric Marsden)
2538 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2539 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2540 * Bug fix: The SPARC backend can now compile functions involving
2541 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2542 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2543 to a functions expecting a PATHNAME-DESIGNATOR.
2544 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2545 lambda lists. (thanks to Alexey Dejneka)
2546 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2547 functions so that EXPORTing the name of the class doesn't cause
2548 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2549 to Antonio Martinez for reporting this)
2550 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2551 constant-folded without failing an assertion. (thanks to Einar
2552 Floystad Dorum for reporting this)
2553 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2554 types are now dealt with more correctly by the compiler.
2555 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2556 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2557 behaviour analogous to RENAME-FILE. This puts its behaviour more
2558 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2560 * The fasl file version number has changed again. (because of the
2561 bug fix involving the names of PCL MAKE-INSTANCE functions)
2563 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2564 * bug fix: Floating point exceptions are treated much more
2565 consistently on the x86/Linux and PPC/Linux platforms.
2566 * Array initialization with :INITIAL-ELEMENT is now much faster for
2567 cases when the compiler cannot open code the array creation, but
2568 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2569 array accesses have also seen a speed increase.
2570 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2571 specified. (This was at the root of some bad interactions between
2572 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2574 * bug fix: Internal error arguments for undefined functions are now
2575 computed correctly on the PPC/Linux platform.
2576 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2577 Raymond Toy's patch for CMU CL)
2578 * Support for the Solaris 9 operating environment has been included
2579 (thanks to Daniel Merritt)
2580 * A very ugly but hopefully complete draft of the missing FFI chapter
2581 of the manual has been created by reformatting the corresponding
2582 CMU CL manual chapter into (currently very ugly and incoherent)
2583 DocBook and bringing it up to date for SBCL behavior. Thus, the
2584 manual is now essentially complete, at least by my extreme
2585 once-and-only-once standards, whereby it's acceptable to refer to
2586 the doc strings of SB-EXT functions as the primary documentation.
2587 * The fasl file version number has changed again, due to cleanup of
2588 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2589 is no longer a static symbol.)
2591 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2592 * SBCL now builds with OpenMCL (version 0.12) as the
2593 cross-compilation host; also, more progress has been made toward
2594 bootstrapping under CLISP.
2595 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2597 * bug 158 fixed: The compiler can now deal with integer loop
2598 increments different from 1; fixing this turned out also to fix
2600 * bug 169 fixed: no more bogus warnings about using lexical bindings
2601 despite the presence of perfectly good SPECIAL declarations (thanks
2602 to David Lichteblau)
2603 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2604 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2605 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2607 * bug 180 fixed: Method combination specifications no longer ignore
2608 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2609 * bug fix: Structure type predicate functions now check their argument
2610 count as they should.
2611 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2612 correctly. (thanks to Pierre Mai)
2613 * minor incompatible change: The --noprogrammer option is deprecated
2614 in favor of the new --disable-debugger option, which is very similar.
2615 (The major difference is that it takes effect at a slightly different
2616 time at startup, causing handling of errors in --sysinit and
2617 --userinit files will be affected differently.) The
2618 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2619 been added to allow this functionality to be controlled from ordinary
2620 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2621 maintainers, who might want to run non-interactive scripts to
2622 build SBCL cores which will later be used interactively.)
2623 * minor incompatible change: The LOAD function no longer, when given
2624 a wild pathname to load, loads all files matching that pathname.
2625 Instead, an error of type FILE-ERROR is signalled.
2627 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2628 * bug 147 fixed: The compiler preserves its block link/count
2629 invariants more correctly now so that it doesn't crash. (thanks
2631 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2633 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2634 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2635 no-value-for-this-character as NIL (as specified by ANSI).
2636 * HOST-NAMESTRING on physical pathnames now returns a string that is
2637 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2638 (thanks to Christophe Rhodes)
2639 * The Alpha port handles icache flushing more correctly. (thanks to
2641 * More progress has been made toward bootstrapping under CLISP. (thanks
2642 to Christophe Rhodes)
2643 * The fasl file format has changed again, because dynamic loading
2644 on OpenBSD (which has non-ELF object files) motivated some cleanups
2645 in the way that foreign symbols are transformed and passed around.
2646 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2647 is no longer treated as whitespace by the reader, but instead as
2648 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2649 |A
\7fB|, instead of A as it used to.
2651 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2652 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2653 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2654 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2655 this as of 0.7.1.45, but was left out of the previous news section
2656 (thanks to Dan Barlow)
2657 * SBCL now runs on the Solaris operating system on SPARC architectures
2658 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2659 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2660 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2661 * SPARC backend cleanups, allowing builds of cores optimized for V8
2662 and V9 SPARCS, and also emission of code targeted to a particular
2663 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2665 * SBCL is closer to bootstrapping under CLISP, thanks to various
2666 fixes by Christophe Rhodes.
2667 * The fasl file format has changed again, to allow the compiler's
2668 INFO database to support symbol macros.
2669 * The user manual (in doc/) is formatted into HTML more nicely.
2670 (thanks to coreythomas)
2671 * The system is smarter about SUBTYPEP relationships, especially
2672 those involving NOT types (including types such as ATOM which are
2673 represented internally using NOT types). Thus SUBTYPEP is less
2674 likely to return (VALUES NIL NIL) in general, and in particular
2675 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2677 * The fasl file format has changed again, because the internal
2678 representation of types now includes a new slot to support the new
2679 SUBTYPEP-of-NOT-types logic.
2680 * (not a change in the main branch of SBCL, but a related prototype
2681 which can hopefully be merged into the main branch of SBCL in the
2682 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2683 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2684 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2685 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2686 dispatch macro character combinations. (thanks to Alexey Dejneka)
2687 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2688 that superficially look like logical namestrings correctly.
2689 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2691 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2692 default supplied-p) for &optional and &key arguments. (thanks to
2695 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2696 * incompatible change: The compiler is now less aggressive about
2697 tail call optimization, doing it only when (> SPACE DEBUG) or
2698 (> SPEED DEBUG). (This is an incompatible change because there are
2699 programs which relied on the old CMU-CL-style behavior to optimize
2700 away their unbounded recursion which will now die of stack overflow.)
2701 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2702 for non-GENCGC systems has been increased to 20M (since that
2703 seems much closer to the likely performance optimum for modern
2704 systems than the old 4M value was)
2705 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2706 and *DEBUG-PRINT-LEVEL*
2707 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2708 of CMU CL's support for SPARC, and various endianness and other
2709 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2710 * new syntactic sugar for the Unix command line: --load foo.bar is now
2711 an alternate notation for --eval '(load "foo.bar")'.
2713 ** The system now detects stack overflow and handles it gracefully,
2714 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2715 optimization settings. (This is a good thing in general, and
2716 its introduction in this version should be particularly timely
2717 for anyone whose code fails because of suppression of tail
2719 ** The system now hunts for the C variable "environ" in a more
2720 devious way, to avoid segfaults when the C library version differs
2721 between compile time and run time. (thanks to Christophe Rhodes)
2722 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2723 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2724 ** The compiler no longer issues bogus style warnings for undefined
2725 classes in the same source file as the DEFCLASSes which defined
2726 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2728 ** fixes in CONDITION class precedence list for undefined function
2729 errors (thanks to Alexei Dejneka)
2730 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2731 correctly. (thanks to Dan Barlow)
2732 ** portability fixes aiming at bootstrapping under CLISP (thanks
2733 to Dave McDonald and Christophe Rhodes)
2734 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2735 ** fixes in type translation and and type inference (thanks to
2737 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2738 ** various fixes in the new ports (thanks to Dan Barlow)
2739 * several changes related to debugging:
2740 ** suppression of tail recursion, as noted above
2741 ** stack overflow detection, as noted above
2742 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2743 is now the default. (For some time encapsulation has been more
2744 reliable than the breakpoint-based :ENCAPSULATE NIL
2745 implementation, at least on X86 systems; and I just noticed that
2746 encapsulation also seems closer to the spirit of the ANSI
2749 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2751 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2752 up properly again. (There was a packaging bug in 0.7.0 which
2753 left their definitions in SB-SYS::LOAD-FOREIGN and
2754 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2755 vital for most things which interface to C-level interfaces,
2756 like extensions working with sockets or databases or
2757 Perl-compatible regexes or whatever, and the need to fix
2758 this bug is the main reason that 0.7.1 was released so
2760 ** DEFGENERIC is now choosier about the methods it redefines, so that
2761 reLOADing a previously-LOADed file containing DEFGENERICs does
2762 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2763 cycle now works as it should. (thanks to Alexey Dejneka)
2764 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2765 fixed by Christophe Rhodes. (He actually submitted this patch
2766 months ago, and I delayed until after 0.7.0.)
2767 ** Bug 111 (internal compiler confusion about runtime checks on
2768 FUNCTION types) was fixed by Alexey Dejneka.
2769 * Some internal cleanups (getting rid of variables which aren't
2770 needed now that the byte interpreter is gone) caused the fasl
2771 file format number to change again.
2773 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2774 * major incompatible change: The default fasl file extension, i.e. the
2775 default extension for files produced by COMPILE-FILE, has changed
2776 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2778 ** There are many changes in the implementation of the compiler.
2779 SBCL is now essentially a compiler-only implementation of ANSI
2780 Common Lisp. EVAL still "interprets" a few special cases, but
2781 almost all the interesting cases are handled by creating
2782 a LAMBDA expression, calling COMPILE on it, then calling
2783 FUNCALL on the result.
2784 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2785 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2786 Since the code is newer, there might still be some new bugs
2787 (though not as many as before Martin Atzmueller's fixes:-). But
2788 the new code is substantially simpler and clearer, and hopefully
2789 any remaining bugs will be simpler, less fundamental, and more
2790 fixable then the bugs in the old code.
2791 ** The revised compiler is still a little unsteady on its feet.
2793 *** The debugging information it produces (particularly the names
2794 of FUNCTION objects) is sometimes much less useful than what
2795 the old compiler produced.
2796 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2797 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2798 within a MACROLET) has been temporarily weakened.
2799 ** There are new compiler optimizations for various functions:
2800 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2801 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2802 *** the math functions TRUNCATE, FLOOR, and CEILING
2803 *** the function-of-all-trades COERCE
2804 Mostly these should be transparent, but there's one
2805 potentially-annoying problem (bug 117): when the compiler
2806 inline-expands a function and does type analysis on the result,
2807 it can create control paths which have type mismatches, and
2808 when it can't prove that those control paths aren't taken,
2809 it will issue WARNINGs about the type mismatches. This is
2810 a particular problem in practice for the new sequence functions.
2811 It's not clear how this should be fixed, and for now, a
2812 workaround is given in the entry for 117 in the BUGS file.
2813 ** (Because of the interaction between the two previous items --
2814 occasional inlining problems and new inline expansions -- some
2815 of the new sequence function optimizations won't really kick in
2816 completely until debugging information, and then inlining, are
2817 straightened out in some future version.)
2818 * minor incompatible changes:
2819 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2820 DIRECTORY no longer implicitly promotes NIL slots of its
2821 pathname argument to :WILD. In particular, when you ask for the
2822 contents of a directory (which you used to be able to do without
2823 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2824 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2825 ** changes in behavior that ANSI explicitly defines to be
2826 implementation dependent:
2827 *** The new compiler-only implementation still conforms with ANSI,
2828 but acts a little different than before. Besides the obvious
2829 changes in performance tradeoffs (that the cost per form passed
2830 to EVAL has gone up, and the cost per form executed by EVAL
2831 has gone down), the behavior of the system changes a little
2832 because there are no longer any interpreted function objects.
2833 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2834 e.g. doing COMPILE on the output of interactive DEFUN is
2836 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2838 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2839 has changed from (:CL) to NIL.
2840 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2841 e.g. #\Newline and #\Tab, don't have names specified in the
2842 ANSI Common Lisp standard, is now based on their ASCII symbolic
2843 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2844 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2845 are no longer used for output.
2846 ** changes in internal implementation constants:
2847 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2848 4 million. (If your application spends a lot of time GCing and
2849 you have a lot of RAM, you might want to experiment with
2850 increasing it even more.)
2851 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2852 However, almost all old code should still continue to work without
2853 immediate update, as SB-C-CALL is now a (deprecated) nickname
2855 ** Old operator names in the style DEF-FOO are now deprecated in
2856 favor of new corresponding names DEFINE-FOO, for consistency with
2857 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2858 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2859 internal symbols, but a few supported extensions like
2860 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2861 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2862 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2863 etc. as you get deeper into recursive calls to the debugger
2864 command loop, instead of the old "5]", "5]]", "5]]]"
2865 sequence. (I was motivated to do this when squabbles between
2866 ILISP and SBCL left me very deeply nested in the debugger. In the
2867 short term, this change will probably provoke more ILISP/SBCL
2868 squabbles, but hopefully it will be an improvement in the long run.)
2869 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2870 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2871 function, since declaiming return types involving aliens is
2872 (1) annoyingly messy to do by hand and (2) vital to efficient
2873 compilation of code which calls such functions.
2874 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2875 longer reexported by the SB-EXT package. They're solely useful
2876 for alien code, so it seems more logical that you should get
2877 them from the SB-ALIEN package, not in SB-EXT.
2878 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2879 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2880 features. Instead, the code that they used to control is always
2881 built into the system.
2882 * many other bug fixes
2883 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2884 advantage of the new EVAL-WHEN stuff and to clean them up in
2885 general, and they are now more ANSI-compliant in a number of
2886 ways. Martin Atzmueller is responsible for a lot of this.
2887 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2889 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2890 *** correct ERROR type for various file operations
2891 *** some fixes for Lisp streams
2892 *** DEFMETHOD syntax checking
2893 *** changing old weird representation of debug information as
2894 strings (which, among their other deficiencies, don't transform
2895 correctly when you rename packages, and don't change their
2896 print representation when you change things like *PACKAGE*
2897 and *PRINT-LENGTH*) to symbols and lists of symbols
2898 He also made several improvements and fixed several bugs in DESCRIBE.
2899 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2901 *** misbehavior of WRITE-STRING/WRITE-LINE
2902 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2903 and several other LOOP problems as well
2904 *** DIRECTORY when similar filenames are present
2905 *** DEFGENERIC with :METHOD options
2906 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2907 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2908 *** argument ordering in FIND with :TEST option
2909 *** mishandled package designator argument in APROPOS-LIST
2910 *** various problems in the backquote readmacro
2911 *** a bug in APROPOS
2912 *** probably some others that I'm not describing very well here,
2913 since the CVS log documents them by reference to sbcl-devel
2914 messages, and the SourceForge archives aren't working well.:-(
2915 ** Dan Barlow improved the Alpha port (and is making progress on the
2916 PPC port, for those of you who think different).
2917 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2918 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2919 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2920 continues to work on the SPARC port (for those of you in a position
2921 to look down upon our little PC-compatible boxes from a great height).
2922 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2923 and uses that copy, rather than the current dynamic value, when
2924 it's trying to decide whether to truncate output. Thus e.g.
2925 (let ((*print-lines* 50))
2926 (pprint-logical-block (stream nil)
2928 (let ((*print-lines* 8))
2929 (print (aref possiblybigthings i) stream)))))
2930 should now truncate the logical block only at 50 lines, instead of
2931 often truncating it at 8 lines, as it did before.
2932 * The doc/cmucl/ directory, containing old CMU CL documentation
2933 from the time of the fork, is no longer part of the base system.
2934 SourceForge has shut down its anonymous FTP service, and with it
2935 my original plan for distributing the old CMU CL documentation
2936 there. For now, if you need these files you can download an old
2937 SBCL source release and extract them from it.
2938 * The fasl file version number changed again, for dozens of reasons,
2939 some of which are apparent above.
2941 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2942 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2943 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2944 patch, so that DISASSEMBLE output is much nicer.
2945 * The code in the SB-PROFILE package now seems reasonably stable.
2946 I still haven't decided what the final interface should look like
2947 (I'd like PROFILE to interact cleanly with TRACE, since both
2948 facilities use function encapsulation) but if you have a need
2949 for profiling now, you can probably use it successfully with
2950 the current CMU-CL-style interface.
2951 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2952 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2953 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2954 link now returns the dangling link itself, and for similar
2955 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2956 link itself. (In these cases the old code signalled an error and
2957 looped endlessly, respectively.) Thus, DIRECTORY now works even
2958 in the presence of dangling and cyclic symbolic links.
2959 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2960 is now a supported extension again, since the consensus on
2961 sbcl-devel was that it can be useful for ordinary development
2962 work, not just for debugging SBCL itself.
2963 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2964 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2965 that currently-defined functions might be redefined later with
2966 different return types.
2967 * Hash tables can be printed readably, as inspired by CMU CL code
2968 of Eric Marsden and SBCL code of Martin Atzmueller.
2969 * better error handling in CLOS method combination, thanks to
2970 Martin Atzmueller porting Pierre Mai's CMU CL patches
2971 * more overflow fixes for >16Mbyte I/O buffers
2972 * A bug in READ has been fixed, so that now a single Ctrl-D
2973 character suffices to cause end-of-file on character streams.
2974 In particular, now you only need one Ctrl-D at the command
2975 line (not two) to exit SBCL.
2976 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2978 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2979 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2980 does the right thing.
2981 * The implementation of some type tests, especially for CONDITION
2982 types, is now tidier and maybe faster, due to CMU CL code
2983 originally by Douglas Crosher, ported by Martin Atzmueller.
2984 * Some math functions have been fixed, and there are new
2985 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2986 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2987 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2988 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2989 likely to be built into sbcl-0.7.0.)
2990 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2991 CL, ported to SBCL by Martin Atzmueller)
2992 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2993 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2994 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2995 * There's a new slam.sh hack to shorten the edit/compile/debug
2996 cycle for low-level changes to SBCL itself, and a new
2997 :SB-AFTER-XC-CORE target feature to control the generation of
2998 the after-xc.core file needed by slam.sh.
2999 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3000 COMPILE-FILE is no longer supported, so that now every function
3001 gets an entry point, so that block compilation looks a little
3002 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3003 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3004 returns the number of bytes consed since the system started,
3005 rather than the number consed since the first time the function
3006 was called. (The new definition parallels ANSI functions like
3007 CL:GET-INTERNAL-RUN-TIME.)
3008 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3009 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3010 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3011 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3012 * Fasl file version numbers are now independent of the target CPU,
3013 since historically most system changes which required version
3014 number changes have affected all CPUs equally. Similarly,
3015 the byte fasl file version is now equal to the ordinary
3018 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3019 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3020 is no longer recognized. I apologize for this, because it was
3021 listed in SB-EXT as a supported extension, but I found that
3022 its existing behavior was poorly specified, as well as incorrectly
3023 specified, and it looked like too much of a mess to straighten it
3024 out. I have enough on my hands trying to get ANSI stuff to work..
3025 * many patches ported from CMU CL by Martin Atzmueller, with
3026 half a dozen bug fixes in pretty-printing and the debugger, and
3027 half a dozen others elsewhere
3028 * fixed bug 13: Floating point infinities are now supported again.
3029 They might still be a little bit flaky, but thanks to bug reports
3030 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3031 as flaky as they were.
3032 * The --noprogrammer command line option is now supported. (Its
3033 behavior is slightly different in detail from what the old man
3034 page claimed it would do, but it's still appropriate under the
3035 same circumstances that the man page talks about.)
3036 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3037 are now supported, and enabled by default. Thus, the compiler can
3038 handle many floating point and complex operations much less
3039 inefficiently. (Thus e.g. you can implement a complex FFT
3041 * The compiler now detects type mismatches between DECLAIM FTYPE
3042 and DEFUN better, and implements CHECK-TYPE more correctly, and
3043 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3044 thanks to patches from Martin Atzmueller.
3045 * various fixes to make the cross-compiler more portable to
3046 ANSI-conforming-but-different cross-compilation hosts (notably
3047 Lispworks for Windows, following bug reports from Arthur Lemmens)
3048 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3049 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3050 fixed thanks to Pierre Mai's CMU CL patches.
3051 * fixes to keep the system from overflowing internal counters when
3052 it tries to use i/o buffers larger than 16M bytes
3053 * fixed bug 45a: Various internal functions required to support
3054 complex special functions have been merged from CMU CL sources.
3055 (When I was first setting up SBCL, I misunderstood a compile-time
3056 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3057 * improved support for type intersection and union, fixing bug 12
3058 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3059 more obscure bugs as well
3060 * some steps toward byte-compiling non-performance-critical
3061 parts of the system, courtesy of patches from Martin Atzmueller
3062 * Christophe Rhodes has made some debian packages of sbcl at
3063 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3064 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3065 stable, but are nonetheless usable. When he's ready, I'd be happy
3066 to add them to the SourceForge "File Releases" section. (And if
3067 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3068 * new fasl file format version number (because of changes in
3069 internal representation of (OR ..) types to accommodate the new
3070 support for (AND ..) types, among other things)
3072 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3073 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3075 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3077 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3078 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3079 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3080 * DESCRIBE now works on structure objects again.
3081 * Most function call argument type mismatches are now handled as
3082 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3083 know whether the function will be redefined before the call is
3084 executed. (The compiler could flag local calls with full WARNINGs,
3085 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3086 it doesn't keep track of enough information to know whether calls
3087 are local in this sense.)
3088 * Compiler output is now more verbose, with messages truncated
3089 later than before. (There should be some supported way for users
3090 to override the default verbosity, but I haven't decided how to
3091 provide it yet, so this behavior is still controlled by the internal
3092 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3093 src/compiler/ir1util.lisp.)
3094 * Fasl file format version numbers have increased again, because
3095 support for the Gray streams extension changes the layout of the
3096 system's STREAM objects.
3097 * The Gray subclassable streams extension now works, thanks to a
3098 patch from Martin Atzmueller.
3099 * The full LOAD-FOREIGN extension (not just the primitive
3100 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3101 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3102 but like most other programs, it defaults to copying the Unix
3103 environment from the original process instead of starting the
3104 new process in an empty environment.
3105 * Extensions which manipulate the Unix environment now support
3106 an :ENVIRONMENT keyword option which doesn't smash case or
3107 do other bad things. The CMU-CL-style :ENV option is retained
3108 for porting convenience.
3109 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3110 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3112 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3114 * A patch from Martin Atzmueller seems to have solved the SIGINT
3115 problem, and as far as we know, signal-handling now works cleanly.
3116 (If you find any new bugs, please report them!)
3117 * The system no longer defaults Lisp source file names to types
3118 ".l", ".cl", or ".lsp", but only to ".lisp".
3119 * The compiler no longer uses special default file extensions for
3120 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3121 seems to expect a single default extension for all compiled code,
3122 and there's no compelling reason to try to stretch the standard
3123 to allow two different extensions.) Instead, byte-compiled files
3124 default to the same extension as native-compiled files.
3125 * Fasl file format version numbers have increased again, because
3126 a rearrangement of internal implementation packages made some
3127 dumped symbols in old fasl files unreadable in new cores.
3128 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3129 many fewer weird special cases.
3130 * Bug #17 (differing COMPILE-FILE behavior between logical and
3131 physical pathnames) has been fixed, and some related misbehavior too,
3132 thanks to a patch from Martin Atzmueller.
3133 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3134 by Tim Moore, ported to SBCL by Martin Atzmueller.
3135 * Martin Atzmueller fixed several filesystem-related problems,
3136 including bug #36, in part by porting CMU CL patches, which were
3137 written in part by Paul Werkowski.
3138 * More compiler warnings in src/runtime/ are gone, thanks to
3139 more patches from Martin Atzmueller.
3140 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3143 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3145 * DESCRIBE now works on CONDITION objects.
3146 * The debugger now handles errors which arise when trying to print
3147 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3149 * The build system now uses an additional file, customize-target-features.lisp,
3150 to allow local modifications to the target *FEATURES* list. (The point of
3151 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3152 debugging features enabled, without having to worry about propagating it
3153 into everyone's system when I do a "cvs update".) When no
3154 customize-target-features.lisp file exists, the target *FEATURES* list
3155 should be constructed the same way as before.
3156 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3157 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3158 warn about behavior which is undefined under the ANSI spec. Note: This
3159 is specified by ANSI, but it's not very popular with programmers.
3160 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3161 macro in the SBCL sources for an example of a workaround which you
3162 might use to make portable ANSI-standard code which does what you want.
3163 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3164 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3165 when it's used as a non-toplevel form. (This is required in order
3166 to implement the DEFCONSTANT-EQX macro.)
3167 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3168 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3169 funny things, due to bugs in the implementation of EVAL-WHEN
3170 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3171 non-toplevel DEFCONSTANTs are uncommon.)
3172 * The core file version number and fasl file version number have been
3173 incremented, because the old noncompliant DEFCONSTANT behavior involved
3174 calling functions which no longer exist, and because I also took the
3175 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3176 * fixed bug 1 (error handling before read-eval-print loop starts), and
3177 redid debugger restarts and related debugger commands somewhat while
3179 ** The QUIT debugger command is gone, since it did something
3180 rather different than the SB-EXT:QUIT command, and since it never
3181 worked properly outside the main toplevel read/eval/print loop.
3182 Invoking the new TOPLEVEL restart provides the same functionality.
3183 ** The GO debugger command is also gone, since you can just invoke
3184 the CONTINUE restart directly instead.
3185 ** The TOP debugger command is also gone, since it's redundant with the
3186 FRAME 0 command, and since it interfered with abbreviations for the
3188 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3190 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3191 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3192 some porting work by Martin Atzmueller)
3193 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3194 with a boatload of patches which he ported to SBCL. Now that those
3196 ** The system tries to make sure that its low-priority messages
3197 are prefixed by semicolons, to help people who like to use
3198 syntax highlighting in their ILISP buffer. (This patch
3199 was originally due to Raymond Toy.)
3200 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3201 patches originally written by Raymond Toy.
3202 ** The compiler understands coercion between single-value and
3203 multiple-VALUES type expressions better, getting rid of some very
3204 weird behavior, thanks to patches originally by Robert MacLachlan
3205 and Douglas Crosher.
3206 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3207 lambda lists, thanks to a patch originally by Pierre Mai.
3208 ** The system no longer bogusly warns about "abbreviated type
3210 ** The compiler gets less confused by inlining and RETURN-FROM,
3211 thanks to some patches originally by Tim Moore.
3212 ** The system no longer hangs when dumping circular lists to fasl
3213 files, thanks to a patch originally from Douglas Crosher.
3214 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3215 undefined function error.
3216 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3217 in structure slot initforms) for now, documented workaround instead:-|
3218 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3219 * fixed bug 5: added stubs for various Gray stream functions called
3220 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3221 installed, at least appropriate type errors are generated
3222 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3223 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3224 consistently in DEFMETHOD forms.
3225 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3226 it doesn't seem to affect SBCL after all
3227 * The C runtime system now builds with better optimization and many
3228 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3230 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3232 * The system is now under CVS at SourceForge (instead of the
3233 CVS repository on my home machine).
3234 * The new signal handling code has been tweaked to treat register
3235 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3236 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3237 downstream, e.g. in debug-int.lisp, has implicit dependencies
3238 on the unsignedness of integer representation of machine words,
3239 and that caused the system to bomb out with infinite regress
3240 when trying to recover from type errors involving signed values,
3241 e.g. (BUTLAST '(1 2 3) -1).)
3242 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3243 (This was one of the bugs Peter Van Eynde reported back in July.)
3244 * The system now uses code inspired by Colin Walters' O(N)
3245 implementation of MAP (from the cmucl-imp@cons.org mailing
3246 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3247 inline the MAP operation, and there is more than one
3248 sequence argument to the MAP call (so that it can't just
3249 do ETYPECASE once and for all based on the type of the
3250 single sequence argument). (The old non-inline implementation
3251 of the general M-argument sequence-of-length-N case required
3252 O(M*N*N) time when any of the sequence arguments were LISTs.)
3253 * The QUIT :UNIX-CODE keyword argument has been renamed to
3254 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3255 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3257 * Raymond Wiker's patches to port dynamic loading from Linux to
3258 FreeBSD have been added.
3259 * The BUGS file is now more nearly up to date, thanks in large part
3260 to Martin Atzmueller's review of it.
3261 * The debugger now flushes standard output streams before it begins
3262 its output ("debugger invoked" and so forth).
3263 * The core version number and fasl file version number have both
3264 been incremented, because of incompatible changes in the layout
3266 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3267 used to not be called for a saved Lisp image.)
3268 * Martin Atzmueller's version of a patch to fix a compiler crash,
3269 as posted on sbcl-devel 13 September 2000, has been installed.
3270 * Instead of installing Martin Atzmueller's patch for the
3271 compiler transform for SUBSEQ, I deleted the compiler transform,
3272 and transforms for some similar consing operations.
3273 * A bug in signal handling which kept TRACE from working on OpenBSD
3275 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3276 away by constant folding
3277 * The system now defines its address space constants in one place
3278 (in the Lisp sources), and propagates them automatically elsewhere
3279 (through GENESIS and the sbcl.h file). Therefore, patching the
3280 address map is less unnecessarily tedious and error-prone. The
3281 Lisp names of address space constants have also been systematized.
3282 * CVS tags like dollar-Header-dollar have been removed from
3283 the sources, because they have never saved me trouble and
3284 they've been source of trouble working with patches and other
3285 diff-related operations.
3286 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3287 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3289 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3291 * The system has been ported to OpenBSD.
3292 * The system now compiles with a simple "sh make.sh" on the systems
3293 that it's supported on. I.e., now you no longer need to tweak
3294 text in the target-features.lisp-expr and symlinks in src/runtime/
3295 by hand, the make.sh takes care of it for you.
3296 * The system is no longer so grossly inefficient when compiling code
3297 involving vectors implemented as general (not simple) vectors (VECTOR T),
3298 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3299 which dares to use the various sequence functions on non-simple
3300 vectors, takes less of a performance hit.
3301 * There is now a primitive type predicate VECTOR-T-P
3302 to test for the (VECTOR T) type, so that e.g.
3303 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3304 can now be compiled with some semblance of efficiency. (The old code
3305 turned the type declaration into a full call to %TYPEP at runtime!)
3306 * AREF on (VECTOR T) is still not fast, since it's still compiled
3307 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3308 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3309 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3310 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3311 without making full calls to SUBTYPEP at runtime.
3312 (Some analogous efficiency issues for non-simple vectors specialized to
3313 element types other than T, or for non-simple multidimensional arrays,
3314 have not been addressed. They could almost certainly be handled the
3315 same way if anyone is motivated to do so.)
3316 * The changes in array handling break binary compatibility, so
3317 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3318 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3319 instead of (VALUES T T).
3320 * By following the instructions that Dan Barlow posted to sbcl-devel
3321 on 2 July 2000, I was able to enable primitive dynamic object
3322 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3323 functionality is not implemented (since it calls ld to resolve
3324 library references automatically, requiring RUN-PROGRAM for its
3325 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3326 try to resolve library references) is now supported.
3327 * The system now flushes the standard output streams when it terminates,
3328 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3329 them at several other probably-convenient times, e.g. in each pass of
3330 the toplevel read-eval-print loop, and after evaluating a form given
3331 as an "--eval" command-line option. (These changes were motivated by a
3332 discussion of stream flushing issues on cmucl-imp in August 2000.)
3333 * The source transform for TYPEP of array types no longer assumes
3334 that an array whose element type is a not-yet-defined type
3335 is implemented as an array of T, but instead punts, so that the
3336 type will be interpreted at runtime.
3337 * There is now some support for cross-compiling in make.sh: each of
3338 the phases of make.sh has its own script. (This should be transparent
3339 to people doing ordinary, non-cross-compile builds.)
3340 * Since my laptop doesn't have hundreds of megabytes of memory like
3341 my desktop machine, I became more motivated to do some items on
3342 my to-do list in order to reduce the size of the system a little:
3343 ** Arrange for various needed-only-at-cold-init things to be
3344 uninterned after cold init. To support this, those things have
3345 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3346 symbols with such names are now uninterned after cold init).
3347 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3348 fasl files for cold load.
3349 ** Remove the old compiler structure pooling code (which used to
3350 be conditional on the target feature :SB-ALLOC) completely.
3351 ** Redo the representation of some data in cold init to be more compact.
3352 (I also looked into supporting byte compiled code at bootstrap time,
3353 which would probably reduce the size of the system a lot, but that
3354 looked too complicated, so I punted for now.)
3355 * The maximum signal nesting depth in the src/runtime/ support code has
3356 been reduced from 4096 to 256. (I don't know any reason for the very
3357 large old value. If the new smaller value turns out to break something,
3358 I'll probably just bump it back up.)
3359 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3361 * Many, many bugs reported by Peter Van Eynde have been added to
3362 the BUGS list; some have even been fixed.
3363 * While enabling dynamic object file loading, I tried to make the
3364 code easier to understand, renaming various functions and variables
3365 with less ambiguous names, and changing some function calling
3366 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3367 * While trying to figure out how to do the OpenBSD port, I tried to
3368 clean up some of the code in src/runtime/. In particular, I dropped
3369 support for non-POSIX signal handling, added various comments,
3370 tweaked the code to reduce the number of compilation warnings, and
3371 renamed some files to increase consistency.
3372 * To support the new automatic configuration functionality in make.sh,
3373 the source file target-features.lisp-expr has been replaced with the
3374 source file base-target-features.lisp-expr and the machine-generated
3375 file local-target-features.lisp-expr.
3376 * fixed a stupid quoting error in make.sh so that using CMU CL
3377 "lisp -batch" as cross-compilation host works again
3379 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3381 * DESCRIBE no longer tries to call itself recursively to describe
3382 bound/fbound values, so that it no longer fails on symbols which are
3383 bound to themselves (like keywords, T, and NIL).
3384 * DESCRIBE now works on generic functions.
3385 * The printer now prints less-screwed-up representations of closures
3386 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3387 * A private symbol is used instead of the :EMPTY keyword previously
3388 used to mark empty slots in hash tables. Thus
3389 (DEFVAR *HT* (MAKE-HASH-TABLE))
3390 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3391 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3392 now does what ANSI says that it should. (You can still get
3393 similar noncompliant behavior if bang on the hash table
3394 implementation with all the symbols you get back from
3395 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3396 This breaks binary compatibility, since tests for equality to
3397 :EMPTY are wired into things like the macroexpansion of
3398 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3400 * There's now a minimal placeholder implementation for CL:STEP,
3401 as required by ANSI.
3402 * An obscure bug in the interaction of the normal compiler, the byte
3403 compiler, inlining, and structure predicates has been patched
3404 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3405 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3407 * Missing ordinary arguments in a macro call are now detected even
3408 when the macro lambda list contains &KEY or &REST.
3409 * The debugger no longer complains about encountering the top of the
3410 stack when you type "FRAME 0" to explicitly instruct it to go to
3411 the top of the stack. And it now prints the frame you request even
3412 if it's the current frame (instead of saying "You are here.").
3413 * As specified by ANSI, the system now always prints keywords
3414 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3416 * The default initial SIZE of HASH-TABLEs is now smaller.
3417 * Type information from CLOS class dispatch is now propagated
3418 into DEFMETHOD bodies, so that e.g.
3419 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3421 is now basically equivalent to
3422 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3423 (DECLARE (TYPE SINGLE-FLOAT X))
3425 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3426 operation, without having to do run-time type dispatch.
3427 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3428 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3429 * Since I don't seem to be making big file reorganizations very often
3430 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3431 is overflowing my ability to conveniently back them up), I've finally
3432 checked the system into CVS. (The CVS repository is on my home system,
3433 not at SourceForge -- putting it on SourceForge might come later.)
3434 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3435 high-level GC-NOTIFY-FOO functions send their output. (There's
3436 still very little control of where low-level verbose GC functions
3437 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3438 less than it used to -- the GC-NOTIFY-FOO functions are now under
3439 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3440 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3441 in only one place in the source code, and propagates it automatically
3442 everywhere that it's needed. Thus e.g. when I bump the version from
3443 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3444 * The C source files now include boilerplate legalese and documentation
3445 at the head of each file (just as the Lisp source files already did).
3446 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3447 to his page will be replaced with a link to his new CLiki service.
3449 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3451 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3452 * The build process now looks for GNU make under the default name "gmake",
3453 instead of "make" as it used to. If GNU make is not available as "gmake"
3454 on your system, you can change this default behavior by setting the
3455 GNUMAKE environment variable.
3456 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3457 can build without error under CMU CL.
3459 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3461 * There is now a partial SBCL user manual (with some new text and some
3462 text cribbed from the CMU CL manual).
3463 * The beginnings of a profiler have been added (starting with the
3464 CMU CL profiler and simplifying and cleaning up). Eventually the
3465 main interface should be through the TRACE macro, but for now,
3466 it's still accessed through vaguely CMU-CL-style functions and macros
3467 exported from the package SB-PROFILE.
3468 * Some problems left over from porting CMU CL to the new
3469 cross-compilation bootstrap process have been cleaned up:
3470 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3471 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3472 part when getting rid of the compiler *BACKEND* stuff.)
3473 ** The value of *NULL-TYPE* was screwed up, because it was
3474 being initialized before the type system knew the final
3475 definition of the 'NULL type. This screwed up several key
3476 optimizations in the compiler, causing inefficiency in all sorts
3477 of places. (I found it because I wanted to understand why
3478 GET-INTERNAL-RUN-TIME was consing.)
3479 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3480 PROCLAIM FTYPE information. Unfortunately this broke binary
3481 compatibility again, since now the forms output by DEFGENERIC
3482 to refer to functions which didn't exist in 0.6.3.
3483 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3484 can use the new (as of 0.6.3) transform for SOME into MAP into
3486 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3487 values to (INTEGER 0 1000000), so that the time code will no longer
3488 occasionally get blown up by Linux returning 1000000 microseconds
3489 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3490 its output conform to the ANSI spec. (Alas, this makes its output
3491 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3492 * A full call to MAP NIL with a single sequence argument no longer conses.
3493 * fixes to problems pointed out by Martin Atzmueller:
3494 * The manual page no longer talks about multiprocessing as though
3495 it were currently supported.
3496 * The ILISP support patches have been removed from the distribution,
3497 because as of version 5.10.1, ILISP now supports SBCL without us
3498 having to maintain patches.
3499 * added a modified version of Raymond Toy's recent CMU CL patch for
3500 EQUALP comparison of HASH-TABLE
3502 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3504 * The system still can't cross-compile itself with
3505 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3506 entails), but at least it can compile more of itself that way
3507 than it used to be able to, and various buglets which were uncovered
3508 by trying to cross-compile itself that way have now been fixed.
3509 * This release breaks binary compatibility again. This time
3510 at least I've incremented the FASL file format version to 2, so that the
3511 problem can be detected reliably instead of just causing weird errors.
3512 * various new style warnings:
3513 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3514 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3515 ** using the lexical binding of a variable named in the *FOO* style
3516 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3517 as specified by ANSI.
3518 * *RANDOM-STATE* is no longer automatically initialized from
3519 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3520 default behavior of the system is to repeat its behavior every time
3521 it's run. If you'd like to change this behavior, you can always
3522 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3523 old convention there was no comparably easy way to get the system to
3524 repeat its behavior every time it was run.
3525 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3526 FTYPE declarations has been removed, in favor of their ANSI
3527 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3528 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3529 the types of their sequence arguments can be determined at compile time.
3530 This is done through a new open code expansion for MAP which eliminates
3531 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3532 argument types can be determined at compile time.
3533 * The optimizer now transforms COERCE into an identity operation when it
3534 can prove that the coerced object is already of the correct type. (This
3535 can be a win for machine generated code, including the output of other
3536 optimization transforms, such as the MAP transform above.)
3537 * Credit information has been moved from source file headers into CREDITS.
3538 * Source file headers have been made more standard.
3539 * The CASE macro now compiles without complaining even when it has
3542 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3544 * (Note that the way that the PCL macroexpansions were rewritten
3545 to accommodate the change in DEFGENERIC below breaks binary
3546 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3547 not run under sbcl-0.6.2. Once we get out of alpha releases,
3548 i.e. hit release 1.0.0, we'll probably try to maintain binary
3549 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3550 and sbcl-1.4.4. Until then, however, it might be fairly common
3551 for maintenance releases to break binary compatibility.)
3552 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3554 * The reporting of unhandled signals has been changed to print some
3555 explanatory text as well as the report form. (Previously only
3556 the report form was printed.)
3557 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3558 it defines, so that the compiler no longer issues undefined function
3559 warnings for compiled-but-not-yet-loaded generic functions.
3560 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3561 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3562 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3563 section of the ANSI spec are supported.
3564 * The "" nickname for the "KEYWORD" package has been removed.
3565 The reader still handles symbol tokens which begin with a package marker
3566 as keywords, but it doesn't expose its mechanism for doing so in the
3567 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3568 * The system now issues STYLE-WARNINGs for contradictory TYPE
3569 proclamations. (Warnings for contradictory FTYPE proclamations would
3570 be nice too, but those can't be done usefully unless the type system
3571 is made smarter about FUNCTION types.)
3572 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3573 systematized, so that "*target-*.lisp is supposed to exist only on the
3574 target and imply that there's a related file which exists on the
3575 host, and *host-*.lisp is supposed to exist only on the host and imply
3576 that there's a related file which exists on the target. This involves a
3577 lot of renaming. Hopefully the acute confusion caused by the renaming
3578 will be justified by the reduction in chronic confusion..
3579 ** runtime-type.lisp -> early-target-type.lisp
3580 ** target-type.lisp -> late-target-type.lisp
3581 ** early-host-format.lisp -> early-format.lisp
3582 ** late-host-format.lisp -> late-format.lisp
3583 ** host-error.lisp -> misc-error.lisp
3584 ** early-error.lisp -> early-target-error.lisp
3585 ** late-error.lisp -> late-target-error.lisp
3586 ** host-defboot.lisp -> early-defboot.lisp
3587 ** code/misc.lisp -> code/target-misc.lisp
3588 ** code/host-misc.lisp -> code/misc.lisp
3589 ** code/numbers.lisp -> code/target-numbers.lisp
3590 ** code/early-numbers.lisp -> numbers.lisp
3591 ** early-host-type.lisp -> early-type.lisp
3592 ** late-host-type.lisp -> late-type.lisp
3593 ** host-typep.lisp -> typep.lisp
3594 ** load.lisp -> target-load.lisp
3595 ** host-load.lisp -> load.lisp
3596 ** host-disassem.lisp -> disassem.lisp
3597 ** host-insts.lisp -> insts.lisp
3598 ** byte-comp.lisp -> target-byte-comp.lisp
3599 ** host-byte-comp.lisp -> byte-comp.lisp
3600 ** host-signal.lisp -> signal.lisp
3601 ** host-defstruct.lisp -> defstruct.lisp
3602 ** late-target-type.lisp -> deftypes-for-target.lisp
3603 Furthermore, several other previously target-only files foo.lisp (e.g.
3604 hash-table.lisp and random.lisp) have been split into a target-and-host
3605 foo.lisp file and a target-only target-foo.lisp file, with their key type
3606 definitions in the target-and-host part, so that the cross-compiler will
3607 know more about target types.
3608 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3609 gone away. In their place are various *BACKEND-FOO* variables
3610 corresponding to the slots of the old structure.
3611 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3612 into the target SBCL has been fixed.
3613 * The chill.lisp system for loading cold code into a running SBCL
3615 * Support for the CMU CL "scavenger hook" extension has been removed.
3616 (It was undocumented and unused in the CMU CL sources that SBCL was
3617 derived from, and stale in sbcl-0.6.1.)
3618 * Various errors in the cross-compiler type system were detected
3619 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3620 (enabling various consistency checks). Many of them were fixed,
3621 but some hard problems remain, so the compiler is back to
3622 running without *TYPE-SYSTEM-INITIALIZED* for now.
3623 * As part of the cross-compiler type system cleanup, I implemented
3624 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3625 * I have started adding UNCROSS calls throughout the type system
3626 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3627 on cross-compiler input files will be able to go away, and various
3629 * CONSTANTP now returns true for quoted forms (as explicitly required
3632 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3634 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3635 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3636 (MAKE-LIST -1). In the longer term, it ought to become true
3637 that declarations are assertions even at SAFETY 1. For now, it's not
3638 quite true even at SAFETY 3, but it's at least more nearly true..
3639 (Note that this change seems to increases the size of the system by
3640 O(5%) and to decrease the speed of the compiler by 20% or more.)
3641 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3642 for the problem of printing dozens of lines of distracting information
3643 about low-level system machinery as part of the top stack frame
3644 on entry to the debugger when an undefined function was called.
3645 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3646 is not reset to COMMON-LISP-USER.
3647 * Compilation of stuff related to dyncount.lisp has been made conditional
3648 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3649 smaller. The various dyncount-related symbols have been moved into
3650 a new "SB-DYNCOUNT" package.
3651 * tty-inspect.lisp has been renamed to inspect.lisp.
3652 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3653 feature has gone away. (When we eventually port to other flavors of
3654 libc and/or Unix, we'll try to make the differences between flavors
3655 invisible at the user level.)
3656 * Various other *FEATURES* tags, and/or their associated conditionals,
3657 have been removed if obsolescent, or given better documentation, or
3658 sometimes given more-mnemonic names.
3660 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3662 * tidied up "make.sh" script
3663 * tidied up system directory structure
3664 * better "clean.sh" behavior
3665 * added doc/FOR-CMUCL-DEVELOPERS
3666 * many many small tweaks to output format, e.g. removing possibly-confusing
3667 trailing #\. character in DESCRIBE-INSTANCE
3668 * (EQUALP #\A 'A) no longer signals an error.
3669 * new hashing code, including EQUALP hashing
3670 * tidied up Lisp initialization and toplevel
3671 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3672 * command line argument processing
3673 * added POSIX-GETENV function to deal with Unix-ish environment variables
3674 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3675 terminating SBCL on EOF
3676 * non-verbose GC by default
3677 * There is no more "sbcl" shell script; the sbcl file is now the C
3678 runtime executable (just like CMU CL).
3679 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3681 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3682 symbol and package information as Lisp native symbol and package objects
3683 instead of strings naming symbols and strings naming packages. This way,
3684 whenever packages are renamed (as in warm init), debug information is
3685 transformed along with everything else.
3686 * tweaked the optimization policy declarations which control the building
3687 of SBCL itself. Now, among other things, the system no longer saves
3688 source location debugging information. (This helps two problems at once
3689 by reducing SBCL size and by keeping SBCL from trying to look for its
3690 sources -- which may not exist -- when reporting errors.)
3691 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3692 debugging and testing purposes
3693 * cleaned up printing, making the printer call PRINT-OBJECT for
3694 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3695 methods, giving nearly-ANSI behavior
3696 * converted almost all special variables to use *FOO* naming convention
3697 * deleted PARSE-TIME functionality, since it can be done portably
3698 * moved some files out of cold init into warm init
3699 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3701 * regularized formatting of source files
3702 * added an install.sh script
3703 * fixed ridiculous memory usage of cross-compiler by making
3704 compiler/alloc.lisp not try to do pooling unless it can hook
3705 itself into the GC of the cross-compilation host. Now the system
3706 builds nicely on my old laptop.
3707 * added :SB-ALLOC in target-features.lisp-expr
3708 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3709 was not implemented)
3710 * re-did condition handling and note reporting in the compiler. Notes
3711 are no longer handled by signalling conditions. Style warnings
3712 and warnings are handled more correctly and reported in such a way
3713 that it's easy to find one or the other in your output (so that you
3714 can e.g. figure out which of many problems caused COMPILE-FILE to
3716 * changed the severity of several compiler warnings from full WARNING
3717 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3718 compiler note reporting so that it doesn't use the condition system
3719 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3720 COMPILE-FILE command)
3721 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3722 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3723 no longer supported, since their implementation was deeply intertwingled
3724 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3725 * removed bogus "support" for compiler macros named (SETF FOO), and
3726 removed the compiler macro for SETF INFO (but only after making a fool
3727 of myself on the cmucl-imp mailing list by posting a bogus patch for
3728 DEFINE-COMPILER-MACRO..)
3729 * Compiled files containing forms which have side effects on the Lisp
3730 reader (such as DEFPACKAGE forms) are now handled more correctly.
3731 (Compiler queuing of top level lambdas has been suppressed by setting
3732 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3733 * deleted various currently-unused source files, e.g. gengc.lisp. They
3734 may be added back at some point e.g. when porting to other architectures,
3735 but until they are it's distracting to distribute them and to try to
3737 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3738 there were so many of them they're just distractions, and UNCROSS is
3739 known to be able to handle the current sources
3740 * moved PROFILE functionality into TRACE, so that it will be clear
3741 how the wrapping and unwrapping of functions when you profile them
3742 interacts with the wrapping and unwrapping of functions when you
3743 trace them. (Actually, the functionality isn't there yet, but at least
3744 the interface specification is there. Hopefully, the functionality will
3745 arrive with some future maintenance release.)
3746 * removed host-oops.lisp
3747 * changed signature of QUIT function to allow UNIX-CODE argument
3748 * fixed READ-SEQUENCE bug
3749 * tweaked verbose GC output so that it looks more like the progress
3750 output that ANSI specifies for functions like LOAD
3751 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3752 * added <http://sbcl.sourceforge.com> to the banner information printed by