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*
6 * improvement: compilation of most CLOS applications is significantly
9 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
10 * minor incompatible change: in sbcl-0.9.11 (but not earlier
11 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
12 into subclasses of the finalized class. Now user calls to
13 FINALIZE-INHERITANCE finalize just the one class, and calls by the
14 system return before any subclasses are finalized.
15 * minor incompatible change: The reader no longer ignores errors
16 regarding non-existent packages in #+ and #- feature tests.
17 * new feature: command line options --no-sysinit, --no-userinit to
18 inhibit loading the corresponding init files
19 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
20 for sending data through UDP sockets (thanks to François-René Rideau)
21 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
22 error is signalled instead (thanks to François-René Rideau)
23 * minor incompatible change: Error signalling behaviour of lexical
24 operations violating package locks has changed slightly. Refer to
25 documentation on package locks for details.
26 * enhancement: EVAL can process IF-expressions without resorting to the
28 * bug fix: Some operations involving SIN, COS, or TAN weren't being
29 constant-folded properly due to missing out-of-line functions.
30 (reported by Mika Pihlajamäki)
31 * bug fix: LISTEN sometimes returned T even in cases where no data was
32 immediately available from the stream
33 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
34 were reversed. (reported by Levente Mészáros)
35 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
36 when given a vector displaced to an adjustable array. (reported
38 * bug fix: derivation of float boundaries from numbers outside the
39 appropriate float range (reported by John Wiseman)
40 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
42 * bug fix: precomputing cache entries for generic functions with
43 some subclasses of specializers as yet invalid does not attempt to
44 fill a cache line with a negative offset. (reported by Levente
46 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
47 allow condition class objects as arguments to DOCUMENTATION and
48 (SETF DOCUMENTATION); only find and set documentation for
49 structure names for the STRUCTURE doc-type. (suggested by Gary
51 * improvements to the Win32/x86 port:
52 ** (user-homedir-pathname) and default initialization file
53 locations now know about the user's "Documents and Settings"
54 directory (thanks to Yaroslav Kavenchuk)
55 ** run-program is implemented (thanks to Mike Thomas)
56 ** sockets support (thanks to Timothy Ritchey)
57 ** better backtrace support (thanks to Alastair Bridgewater)
58 ** sb-grovel supported
59 ** asdf-install and sb-posix work somewhat
60 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
61 * improvements to the Solaris/x86 port:
62 ** works on Solaris 11/Solaris Express
63 ** floating-point exception handling support
64 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
65 * fixed some bugs revealed by Paul Dietz' test suite:
66 ** REMOVE-METHOD returns its generic function argument even when
67 the method is not one of the generic functions' methods.
68 ** objects declared as MEMBER types can be admissible arguments to
70 ** printing characters should simply be printed by the FORMAT ~:C
72 ** compiler failure when compiling functions with hairy constant
73 defaults for optional parameters.
74 ** compiler produces wrong code when MAYBE-INLINE-expanding a
75 function, which is already optimized.
77 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
78 * new platform: experimental support for SBCL x86/Darwin, including
79 MacOS X 10.4.5 on Intel.
80 * new feature: Unicode character names are now known to the system
81 (through CHAR-NAME and NAME-CHAR).
82 * new feature: the filesystem location of SBCL's core file is
83 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
84 * minor incompatible change: the contrib modules SB-POSIX and
85 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
86 this change is to make it easier to distribute
87 location-independent binaries.
88 * bug fix: as implied by AMOP, standardized classes no longer have
89 slots named by external symbols of public packages. (reported by
91 * optimization: calling functions via constant symbols -- as in
92 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
93 via the function object as in (FUNCALL #'FOO).
94 * optimization: on x86 and x86-64, the calling convention for the
95 case of dealing with an unknown number of values has been altered
96 to be friendlier to the prediction heuristics implemented,
97 particularly with reference to CALL and RET pairing. (thanks to
99 * optimization: on x86, the code for access to thread-local symbol
100 values and binding/unbinding of thread-local symbols is smaller.
101 (thanks to Alastair Bridgewater)
102 * enhancement: CONSTANTP is now able to determine constantness of
103 more complex forms, including calls to constant-foldable standardized
104 functions and some special forms beyond QUOTE.
105 * fixed bug: occasional GC crashes on Solaris/x86
106 * optimization: x86-64 supports stack allocation of results of simple
107 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
108 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
109 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
110 (thanks to James Knight)
111 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
112 by the standard (thanks to Stephen Compall)
114 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
115 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
116 be used for bundling the runtime and the core file into one
117 executable binary. This feature is not currently supported on all SBCL
118 platforms. (thanks to James Bielman and NIIMI Satoshi)
119 * new feature: a generational or ephemeral garbage collector is now
120 the default on the PowerPC platform (both Linux and Darwin). The
121 old Cheney (stop and copy) collector is a build-time option.
122 (thanks to Cyrus Harmon, after Raymond Toy)
123 * minor incompatible change: the method by which SBCL finds its
124 contributed modules has changed; it no longer relies on symbolic
125 links from an $SBCL_HOME/systems directory, but searches directly
126 in the subdirectories of $SBCL_HOME.
127 * enhancement: the dynamic heap size on the Linux/PPC platform is
128 markedly larger, even using the older Cheney garbage collector.
129 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
130 certain complicated string types. (reported by Gary King)
131 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
132 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
133 * fixed bug: DOCUMENTATION on structures no longer signals an
134 error if no structure type of the right name exists. (reported by
136 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
137 applicable non-standard primary or :AROUND method on
138 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
139 no longer cause unbound variable errors. (reported by Kevin Reid)
140 * fixed bug: metacircle resolution in cases where methods have slots
141 added before the slots from STANDARD-METHOD. (reported by Jean
143 * fixed bug: the Power PC assembly code for calling into lisp
144 sometimes computed its return address wrongly (depending on the
145 15th bit of the address, fixed at link time). This used to
146 manifest itself in a segmentation violation while building PCL.
147 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
148 many others over the years)
149 * fixed bug: ROOM no longer reports silly numbers for stack usage if
150 the stack pointer (treated as a signed integer) is negative.
151 (thanks to Peter van Eynde)
153 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
154 * new platform: experimental support for the Windows operating
155 system has been added. (thanks to Alastair Bridgewater)
156 * fixed several bugs in and robustified the PPC FFI (including
157 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
158 * bug fix: allow non-simple string symbol names (reported by Paul
160 * bug fix: interrupt handling on NetBSD (thanks to Richard M
162 * bug fix: saving a core corrupted callbacks on x86/x86-64
163 * bug fix: closed a loophole in metacircularity detection and
164 grounding in the PCL implementation of CLOS.
165 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
166 (reported by tomppa on #lisp)
167 * bug fix: clear the direction flag on Lisp -> C transitions, as
168 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
169 (reported by Andrej Grozin and Hendrik Maryns)
170 * optimization: major improvements to GC efficiency on GENCGC platforms
171 * optimization: faster implementation of EQUAL
172 * optimization: emit more efficient opcodes for some common
173 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
174 * optimization: several other minor code-generation improvements on x86-64
175 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
177 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
178 * minor incompatible change: (SETF CLASS-NAME) and (SETF
179 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
180 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
181 by ANSI as a generic function, and for consistency (SETF
182 GENERIC-FUNCTION-NAME) is treated likewise.
183 * fixed bug #233.b: make constraint propagation notice when a variable
184 value is changed after it is referenced but before it is used
185 * fixed bug #296: no more arbitrary behaviour from filenames with
186 odd characters as --load arguments. (reported by Adam Warner)
187 * fixed bug #390: :CHARACTER-SET pathname components now work as
188 expected. (reported by Tim Daly Jr)
189 * fixed bug #391: complicated :TYPE intersections in slot
190 definitions no longer cause an error in PCL internals.
191 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
192 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
193 returning the number of octets which would be written to the
194 file-stream. (thanks to Robert J. Macomber)
195 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
196 arguments to the internal stream functions. (thanks to David
198 * bug fix: stack exhaustion is now handled on the x86/SunOS
199 platform. (thanks to Daisuke Homma)
200 * bug fix: more accurate ROOM results on GENCGC platforms
201 * optimization: improved type inference for arithmetic-for
202 index variables in LOOP
203 * optimization: faster floating-point SQRT on x86-64
204 * fixed some bugs revealed by Paul Dietz' test suite:
205 ** DOCUMENTATION returns NIL instead of "" for method combinations
206 that don't have a docstring
208 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
209 * minor incompatible change: (SETF CLASS-NAME) and (SETF
210 GENERIC-FUNCTION-NAME) are no longer generic functions, and
211 therefore are not customizeable by user code (as seems to be at
212 least permitted and maybe required by AMOP). As a consolation,
213 however, the SBCL implementation of these functions now calls
214 REINITIALIZE-INSTANCE as specified by AMOP.
215 * bug fix: slot-definition documentation is propagated as per ANSI
216 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
217 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
218 argument, as do eslotd initialization methods. (from Pascal
219 Costanza's "Closer" project)
220 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
221 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
223 * bug fix: it is now possible to have more than one subclass of
224 STANDARD-GENERIC-FUNCTION without causing stack overflow.
225 (reported by Bruno Haible, Pascal Costanza and others)
226 * bug fix: the dependent update protocol now works for generic
227 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
229 * bug fix: condition-class instances corresponding to
230 DEFINE-CONDITION forms are now created eagerly. (reported by
231 Kalle Olavi Niemitalo on comp.lang.lisp)
232 * bug fix: floating point printing is more accurate in some
233 circumstances. (thanks to Simon Alexander)
234 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
235 merged with *DEFAULT-PATHNAME-DEFAULTS*.
236 * bug fix: callbacks on OS X now preserve stack-alignment.
237 (thanks to Cyrus Harmon)
238 * enhancement: the x86-64 disassembler is much better at
239 disassembling SSE instructions. (thanks to Lutz Euler)
240 * enhancement: CHECK-TYPE on a variable now allows type-inference
241 (thanks to Vincent Arkesteijn)
242 * optimization: improved performance of EUC-JP external format.
243 (thanks to NIIMI Satoshi)
244 * optimization: performance improvements to IO on file streams of
245 :ELEMENT-TYPE CHARACTER
246 * optimization: much faster memory allocation on x86-64
247 * optimization: faster garbage collections (latency and throughput)
249 * optimization: faster bignum subtraction and division on x86 and x86-64
250 (thanks to Lutz Euler)
251 * optimization: more accurate type-inference for loops that use a
252 floating point index variable or a negative step.
254 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
255 * bug fix: add a workaround to SBCL looping infinitely at startup on
256 Linux kernels with apparently buggy implementations of personality().
257 (thanks to Svein Ove Aas)
258 * bug fix: Unicode symbols are correctly printed in LDB backtraces
259 (thanks to David Lichteblau)
260 * bug fix: local bindings shadow global symbol macros for
261 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
262 * optimization: non-open coded uses of numeric comparison operators
263 (e.g. >) no longer cons when called with more than one parameter
264 on platforms supporting dynamic-extent allocation.
265 * enhancement: saving cores with foreign code loaded is now supported
266 on MIPS/Linux in addition to the previously supported platforms.
267 * bug fix: FIND-RESTART now tests for activity, not applicability when given
268 a restart object as identifier. (reported by Helmut Eller for CMUCL)
269 * bug fix: division by zero in sb-sprof when no samples were collected
270 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
271 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
272 (thanks to Alexander Kjeldaas)
273 * new feature: ignoring the return values of destructive functions
274 like NREVERSE signals a compile-time style-warning.
275 (thanks to Kevin Reid)
276 * new feature: the alignment of alien structure fields can be
277 explicitly specified. (thanks to Cyrus Harmon)
278 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
279 and dump core on SIGQUIT
281 ** incompatible change: threads do not inherit values of specials
282 from their parents (see manual)
283 ** bug fix: threads stacks belonging to dead threads are freed by the
284 next exiting thread, no need to gc to collect thread stacks anymore
285 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
286 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
287 ** bug fix: dynamic variable and thread start related gc lossage
288 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
290 * fixed some bugs revealed by Paul Dietz' test suite:
291 ** SUBTYPEP is slightly more accurate on heinously complicated
292 CONS types where some of the members have uncertain (in the
293 NIL, NIL sense) type relationships to each other.
295 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
296 no longer purified unless :PURIFY T is explicitly specified.
297 ** Non-purified cores are significantly smaller than before
299 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
300 * new feature: timers based on Zach Beane's excellent timer package
301 * added support for the following external formats: koi8-u,
302 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
303 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
304 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
305 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
306 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
307 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
308 * incompatible change: a threaded SBCL will no longer revert to
309 non-threaded mode on non-NPTL systems, but refuse to start entirely.
310 * bug fix: interrupts are disabled until startup is complete; no
311 more sigsegvs when receiving a signal to soon
312 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
314 * bug fix: add a workaround for the memory randomization features in
315 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
316 workaround will only be in effect on systems with the proc filesystem
318 * bug fix: printing objects of type HASH-TABLE signals a
319 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
321 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
322 have been running for over 50 days. (reported by Gilbert Baumann)
323 * bug fix: the logic for getting names of functions gets less
324 confused when confronded with alternate-metaclass
325 funcallable-instances. (reported by Cyrus Harmon)
326 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
327 consistent, even on internal alternate-metaclass objects.
328 * bug fix: flush closure information collected by physical
329 environment analysis prepass before the main pass. (bug reported
331 * bug fix: compiler pack phase does not modify a hashtable, which is
332 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
333 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
334 may be expanded. (reported by Alexander <malishev> on c.l.l)
335 * bug fix: no more style-warnings when compiling code using LAST
336 under high-SPEED low-SPACE settings. (reported by David Wallin
338 * fixed some incompatibilities between SBCL's MOP and the MOP
340 ** the METAOBJECT class is now implemented;
341 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
342 STANDARD-OBJECT, as required;
343 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
344 now compatible (as required by VALIDATE-SUPERCLASS); there
345 remains a consistency requirement over the presence or absence
346 of the FUNCTION class in the superclass list of finalized
347 classes; see the manual for more details;
348 ** the :AROUND method for COMPUTE-SLOTS on
349 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
350 requested slot ordering.
352 ** bug fix: parent thread now can be gc'ed even with a live
354 ** bug fix: binding a special with PROGV to no value is not
355 the same as that symbol not having been bound (thanks to
357 ** bug fix: binding specials is thread safe (thanks to
359 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
360 and SB-SPROF do not die with 'no handler for signal XX in
361 interrupt_handle_now(..)' anymore
362 ** bug fix: WITH-TIMEOUT works with multiple running threads
363 * fixed some bugs revealed by Paul Dietz' test suite:
364 ** ENSURE-GENERIC-FUNCTION should take a method class object for
365 the :method-class keyword argument.
367 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
368 * new port: the Solaris operating system on x86 processors is now
369 mostly supported, though some rough edges in the environment
370 remain. (thanks to Daisuke Homma)
371 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
372 space for its heap. (thanks to Thiemo Seufer)
373 * optimization: SBCL on MIPS platforms now supports dynamic-extent
374 closures. (thanks to Thiemo Seufer)
375 * minor incompatible change: eof selects abort in the debugger.
376 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
377 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
379 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
380 deprecated, and will go away in a future revision of SBCL.
381 * minor incompatible change: GC-ON and GC-OFF are no longer
382 implemented with a counter, it does not matter how many times gc
383 is switched on or off
384 * bug fix: discriminating functions for generic function classes
385 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
386 make invalid assumptions about method precedence order. (reported
388 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
389 platforms. (thanks to Thiemo Seufer)
390 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
391 * bug fix: correct pathname printing with printer escaping is on.
392 (thanks to Kevin Reid)
393 * bug fix: complex VOP definitions in "user-space" no longer trigger
394 package locks. (reported by Zach Beane)
395 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
396 for funcallable-instance functions, and is no different from
398 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
399 characters in the current readtable. (reported by Nicholas Neuss)
400 * bug fix: SUBTYPEP on various CONS types returns more a more
401 accurate acknowledgment of its certainty.
402 * optimizations: REMOVE-DUPLICATES now runs in linear time on
403 lists in some cases. This partially fixes bug 384.
404 * flush all standard streams before prompting in the REPL and the
406 * bug fix: signal handling and triggering gc do not conflict
407 directly anymore, in particular a high frequency sb-sprof does
408 not prevent gc from running
409 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
410 approximation for timezone and DST information between the
411 universal time epoch and the smallest negative 32-bit time_t.
412 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
413 year 1899 so long as the encoded time is non-negative.
414 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
415 the correct answer for non-constant rotate amounts when performing
416 an inline 32-bit rotation.
418 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
419 there is only one thread in the session
420 ** bug fix: memory leak for streams created in one thread and
421 written to in another
422 ** bug fix: lockup when compiled with gcc4
423 ** bug fix: race that allows the gc to be triggered when gc is
425 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
426 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
428 ** bug fix: finished threads are gc'ed properly
429 * fixed some bugs revealed by Paul Dietz' test suite:
430 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
431 has arguments with a different set of applicable methods from
432 the orignal arguments.
433 ** The type error thrown by MAP now has a correct expected-type
435 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
436 name a compiled function.
437 ** Three MISC tests where a large bignum was improperly coerced to
438 a float that couldn't represent that bignum during type
439 derivation were fixed.
440 ** SUBTYPEP can now handle types involving the negation of a
441 list-form FUNCTION type.
442 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
443 as (COMPLEX (AND RATIO (NOT FIXNUM))).
444 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
446 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
447 * New feature: Experimental support for bivalent streams: streams
448 opened with :element-type :default now allow character and binary
449 (unsigned-byte 8) I/O
450 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
451 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
453 * bug fix: no more highly sporadic "couldn't check whether ~S is
454 readable" when reading a stream and an interrupt hits in the middle
455 of a select system call
456 * compiler better recognizes complex arrays (reported by Eduardo
458 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
459 for variables on SBCL built with linkage-tables. (reported by Luis
461 * various error reporting improvements.
462 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
463 (Thanks to Thiemo Seufer)
464 * bug fix: nested reader invokations work correctly
465 * bug fix: it is possible to have simultaneous references to foreign
466 code and foreign data with the same name.
468 ** added x86-64 support
469 ** incompatible change: the threading api now works with thread
470 objects instead of thread ids
471 ** bug fix: threads are protected from signals and interruption when
472 starting up or going down
473 ** bug fix: a race where an exiting thread could lose its stack to gc
474 ** bug fix: don't halt on infinite error in threads if possible
475 ** fixed numerous gc deadlocks introduced in the pthread merge
476 ** bug fix: fixed thread safety issues in read and print
477 ** bug fix: debugger doesn't hang on session lock if interrupted at
478 an inappropriate moment
479 ** bug fix: run-program is now thread safe(r)
480 ** bug fix: inner with-recursive-lock no longer releases the mutex
481 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
482 * fixed some bugs revealed by Paul Dietz' test suite:
483 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
484 EXPECTED-TYPE slots filled.
485 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
487 ** MAKE-CONDITION accepts classes as type-designators.
488 ** COMPILE may never return NIL.
489 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
490 range before calling Unix time functions
492 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
493 * numerous signal handling fixes to increase stability
494 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
495 * minor incompatible change: we now correctly canonize default
496 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
497 as per the MOP, rather than the historical (INITARG INITFUNCTION
498 INITFORM). (reported by Bruno Haible)
499 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
500 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
501 for more information.
502 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
503 pathname is a directory pathname.
504 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
505 * dynamic space size on PPC has been increased to 768Mb. (thanks to
507 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
508 :METACLASS argument in addition to a class name. (reported by
509 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
510 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
511 (reported by Bruno Haible; patch from Gerd Moellmann)
512 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
514 * bug fix: more cleanups to the floating point exception handling on
515 x86-64 (thanks to James Knight)
516 * bug fix: the compiler does not try to constant fold calls of
517 COERCE and BIT-* functions when they return freshly constructed
518 objects. (reported by Nikodemus Siivola and Paul Dietz)
519 * optimization: improved the MIPS versions of generic (in the
520 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
521 * optimization: direct conversion of (unsigned-byte 32) to floats on
522 the PowerPC platform.
523 * optimization: structure instances with raw slots now use less
524 memory, and probably show better memory locality. (thanks to
526 * optimization: DYNAMIC-EXTENT declarations for lists and closures
527 are treated as requests for stack allocation on the x86-64,
528 Alpha-32, PPC and SPARC platforms.
529 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
530 the wrong file descriptor; implementation of SOCKET-OPEN-P.
531 (thanks to Tony Martinez)
533 ** gcing a dead thread can no longer lead to lockups
534 ** threads block signals until they are set up properly
535 ** errno is no longer shared by threads
536 ** interrupt-thread restores the eflags register on x86
537 ** fixed some lockups due to gc/thread interaction
538 * fixed some bugs revealed by Paul Dietz' test suite:
539 ** invalid dotted lists no longer raise a read error when
541 ** signal an error if a symbol that names a declaration is used
542 as the name of a type, or vice versa
543 ** allow using the (declare (typespec var*)) abbreviation for
544 (declare (type typespec var*)) with all type specifiers
545 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
546 ** always return NIL from PPRINT-POP when OBJECT is NIL
547 ** don't signal errors when pretty-printing malformed LABELS,
548 FLET or MACROLET forms
549 ** declarations in a DOLIST body are also in scope for the
551 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
553 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
556 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
557 * fixed cross-compiler leakages that prevented building a 32-bit
558 target with a 64-bit host compiler.
559 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
560 opened with :IF-EXISTS :OVERWRITE.
561 * fixed bug 281: error for an invalid qualifier in a short-form method
562 combination method is not signalled until the faulty method is called.
563 * bug fix: iteration variable type inferrer failed to deal with open
564 intervals. (reported by Alan Shields)
565 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
566 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
567 or more runtime options were provided to the sbcl binary.
568 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
569 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
570 * optimization: there's now a fast-path for fixnum arguments in the
571 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
572 * optimization: the code generated on x86-64 is more compact thanks
573 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
574 * bug fix: floating-point exception handling now partly works on
575 x86-64. (Thanks to James Knight)
576 * improvement to the MIPS backend from Thiemo Seufer: C-style
577 64-bit long long arguments and return values to alien functions
579 * fixed some bugs revealed by Paul Dietz' test suite:
580 ** the type-error signalled from WARN has a filled-in DATUM slot.
581 ** the type-error required when a stream is not associated with
582 a file has the stream as its datum.
583 ** type-errors on single-floats on x86-64 no longer have
584 :INVALID-OBJECT as the datum
585 ** the type-errors signalled for invalid function names now have
586 a correct expected type
587 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
588 for structures defined with a :TYPE. Documentation strings for
589 typed structures are no longer immediately discarded
590 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
591 broadcast streams and synonym streams. FILE-LENGTH now also works
592 on broadcast streams.
594 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
595 * incompatible change: the --noprogrammer option, deprecated since
596 version 0.7.5, has been removed. Please use the equivalent
597 --disable-debugger option instead.
598 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
600 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
601 inoperational for a while now) has been completely removed.
602 * null lexical environments are now printed as #<NULL-LEXENV>,
603 significantly reducing the amount of clutter in typical backtraces.
604 * documentation on weak pointers, finalization, and after GC hooks
605 has been added to the manual.
606 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
607 as other specialized array types, is much faster. SUBSEQ and
608 COPY-SEQ on such arrays have also been sped up.
609 * optimization: EQL is now more efficient when at least other argument
610 is known to be of type (OR FIXNUM (NOT NUMBER)).
611 * fixed bug: the runtime is now less vulnerable to changes in the
612 size of the SBCL object on OS X, and virtual memory is reserved for
613 all spaces that need to be at a fixed address.
614 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
615 * fixed bug: finalizers and after GC hooks that cause consing are now
617 * fixed bug: compiler error messages and summaries are now printed to
618 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
619 * fixed inference of the upper bound of an iteration variable.
620 (reported by Rajat Datta).
621 * fixed bug 211e: calling local functions with duplicated constant
622 keyword argument no longer causes a bogus style warning about an
624 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
625 ftype declaration to be disregarded. (reported by Dave Roberts)
626 * fixed bug 373: caused by erronous compilation of references to alien
627 variables in the runtime on ppc/darwin.
628 * fixed bug 376: CONJUGATE type deriver.
629 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
630 (reported by Baughn on #lisp)
631 * a cross-compiler bug on non-x86 platforms has been identified and
632 fixed. (thanks to Bruno Haible)
633 * improvements to the MIPS runtime code for increased stability.
634 (thanks to Thiemo Seufer)
635 * increased the maximimum compact environment size to allow
636 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
637 * partial workaround for bug 135: don't name the function we're
638 calling for hairy cases of EVAL, so as not to accumulate one environment
639 entry per call to EVAL. (reported by Kevin Reid)
640 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
641 * optimization: type testing for non-vector arrays should be faster.
642 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
644 * bug fix: setting 31st element of a bit vector to zero did not work
646 * bug fix: redefining a class definition which failed due to a
647 previous accessor / function clash now works (but see BUGS entry
648 #380 for more problems in this area). (thanks to Zach Beane)
649 * the long form of DEFINE-METHOD-COMBINATION disables method group
650 checking when given a single method group with pattern *. (thanks
652 * on x86 compiler supports stack allocation of results of simple
653 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
654 * support for building and running on Mac OS X 10.4 "Tiger" has been added
655 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
656 * fixed some bugs related to Unicode integration:
657 ** the restarts for recovering from input and output encoding
658 errors only appear when there is in fact such an error to
660 * fixed some bugs revealed by Paul Dietz' test suite:
661 ** MISC.549 and similar: late transformation of unsafe type
662 assertions into derived types caused unexpected code
664 ** SCALE-FLOAT type deriver is less wrong.
665 ** type derivers for EXP, LOG and similar functions compute result
666 types for complex arguments better.
667 ** (MISC.563) CONJUGATE type deriver works for very restricted
669 ** out-of-line type testers for character strings are available.
670 ** EQUAL compiler transform understands specialness of objects
672 ** accessing double-floats stored on the stack now works on x86-64.
673 ** debugger internals could sometimes create invalid lispobjs,
674 resulting in GC crashes.
675 ** MISC.548: type check weakening can convert required type into
677 ** initialization forms for bindings are not in scope of free special
680 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
681 * incompatible change: thread support for non-NPTL systems has
682 been removed - locking is buggy and unreliable. A threaded
683 SBCL build will now warn at startup and refuse to create
684 new threads, unless futex support is detected in the kernel
685 * incompatible change: the top level REPL now has only an ABORT
686 restart associated with it, not TOPLEVEL and ABORT as it used to.
687 TOP and TOPLEVEL are now available as debugger commands for
688 returning to the top level.
689 * incompatible change: forms evaluated in the REPL now use the
690 global optimization policy.
691 * incompatible change: user- and system-initialization files are
692 no longer processed with LOAD, but by READ and EVAL; hence the
693 global optimization policy, startup package, readtable, etc,
695 * The .fasl file format number has been incremented because of
696 various incompatible changes.
697 * internal entry point details and argument counts no longer appear
698 in backtraces unless explicitly requested by setting
699 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
700 * built-in and standard functions no longer have names like "top
701 level local call to FOO".
702 * fixed bug 32: functions defined in non-null lexical environments
703 now have more legible printed representation
704 * fixed bug 33: functions defined in non-null lexical environemnts
705 are now more amenable to inspection by INSPECT.
706 * workaround for bug 354: XEPs no longer appear in backtraces unless
707 explicitly requested.
708 * fixed bug: receiving the signal which results from attempting to
709 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
710 SIGBUS on other *BSDs) on architectures where the C stack is also
711 the Lisp stack (x86 and x86-64) from foreign code no longer leads
712 to debugger confusion or wild instability. (reported by Cheuksan
714 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
715 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
716 (reported by Lutz Euler)
717 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
718 compiled code. (reported by Paul Dietz)
719 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
720 specialized parameter to a method to something that is not TYPEP
721 the specializer is now possible.
722 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
723 face of package deletion.
724 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
725 pathname. (reported by David Tolpin on c.l.l)
726 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
727 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
728 STRING-STREAM and FILE-STREAM, respectively.
729 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
730 than previously; in addition, its test suite is now run on build.
731 (thanks to Luke Gorrie)
732 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
733 * optimization: added a immediate representation for single-floats
735 * fixed some bugs revealed by Paul Dietz' test suite:
736 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
737 ** attempting to create a package with a colliding nickname causes
738 correctable errors to be signalled.
739 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
740 ** several x86-64 backend bugs related to sign-extension of immediate
743 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
744 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
745 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
747 * fixed loading of multiply forward-referenced layouts.
748 (thanks to Cheuksan Wang)
749 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
750 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
751 (see COMPILE-FILE documentation for details of :PRINT option)
752 * fixed bugs 19 and 317: fixed-format floating point printing is
753 more accurate. This also fixes a bug reported by Adam Warner
754 related to the ~@F format directive.
755 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
757 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
758 dispatch table if the from-char is a dispatch macro character.
759 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
760 by the wordsize no longer ignore the last word. (reported by Lutz
762 * fixed bug in type checking of dynamic-extent variables. (reported
764 * optimization: sequence traversal functions use their freedom to
765 coerce function designators to functions.
766 * optimization: code with many calls to CLOS methods specialized on
767 CLOS classes has had redundant type checks removed.
768 * optimization: added declarations to speed up operations that access
769 the internal character database (for example STRING-UPCASE)
770 * optimization: comparison operations between floats and sufficiently small
771 fixnums no longer create extra rationals
772 * fixed some bugs related to Unicode integration:
773 ** portions of multibyte characters at the end of buffers for
774 character-based file input are correctly transferred to the
775 start of the buffer at the next read.
776 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
777 passing it through to OPEN.
778 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
779 argument given to internal calls to OPEN.
780 ** the built-in comment readers (introduced by character sequences
781 ";" and "#|") are more forgiving to encoding errors; they will
782 STYLE-WARN and then attempt to resync the stream at a character
783 boundary. (thanks to Teemu Kalvas)
784 * fixed some bugs in the x86-64 port:
785 ** Negative short int return values from c-calls are sign-extended
787 ** The stack is aligned to 16-bytes for c-calls, as required by
788 the ABI. (thanks to Cheuksan Wang)
789 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
790 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
791 for enums. (thanks to Vincent Arkesteijn)
792 ** Multiple small optimizations and bugfixes for floating point
794 * fixed some bugs revealed by Paul Dietz' test suite:
795 ** Space, Tab, Linefeed, Return and Page have the invalid
796 secondary constituent character trait.
797 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
799 ** WITH-INPUT-FROM-STRING should only update the index place on
801 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
803 ** Bit-array operations (BIT-AND and similar) worked incorrectly
804 with one-dimensional arrays with fill pointers.
805 ** TYPE-OF failed on a complex with an integer realpart and a
807 ** compiler failure during type inference for the code of form
808 (IF (EQL X (THE ...)) ...) (MISC.535).
810 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
811 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
812 platform. The port supports 61-bit fixnums, large memory spaces
813 and reloading shared object files.
814 * enhancement: saving cores with foreign code loaded is now
815 supported on ppc/Darwin in addition to the previously supported
817 * enhancement: the statistical profiler now walks deeper into the
818 call stack for more meaningful call-graphs and accrued time
819 reports (x86/x86-64 only). It also now reports time spent in
821 * enhancement: it is now possible to trace most individual methods
822 of a generic function in addition to tracing the generic function
824 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
826 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
827 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
828 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
829 produces an error. (thanks to Vincent Arkesteijn)
830 * bug fix: NAMESTRING on pathnames with :WILD components in their
831 directories works correctly. (thanks to Artem V. Andreev)
832 * fixed bug 125: compiler preserves identity of closures. (reported
834 * bug fixed: functions with &REST arguments sometimes failed with
835 "Undefined function" when compiled with (DEBUG 3). (reported by
837 * bug fix: overflow during compiling of setting element of a bit
838 vector with constant index and value. (reported by Timmy Douglas)
839 * build fix: fixed the dependence on *LOAD-PATHNAME* and
840 *COMPILE-FILE-PATHNAME* being absolute pathnames.
841 * on x86 compiler partially supports stack allocation of dynamic-extent
843 * GO and RETURN-FROM do not check the extent of their exit points
844 when compiled with SAFETY 0.
845 * fixed some bugs related to Unicode integration:
846 ** encoding and decoding errors are now much more robustly
847 handled; it should now be possible to recover even from invalid
848 input or output to the terminal. (thanks to Teemu Kalvas)
849 ** provided a first cut at implementing STRING-TO-OCTETS and
850 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
851 ** altered the SB-MD5 contributed module slightly, changing the
852 interface just enough for it to be supportable for builds where
853 lisp characters are not eight bits.
854 * fixed some bugs revealed by Paul Dietz' test suite:
855 ** the FORMATTER-generated functions for ~V[ conditionals require
856 the correct number of arguments.
857 ** READ-FROM-STRING returns the mandated second value when applied
858 to displaced strings.
859 ** the #\Rubout and #\Backspace characters are treated as invalid
860 constituent characters by the tokenizer.
862 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
863 * new feature: reloading changed shared object files with
864 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
865 * new feature: references to foreign variables and functions
866 can now be compiled and loaded before the corresponding shared
867 object file is loaded, as long as the foreign definitions are
868 available at runtime.
869 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
870 supported. (thanks to Dan Debertin)
871 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
872 just keywords. (thanks to Vincent Arkesteijn)
873 * fixed bug #331: structure-class instances corresponding to
874 DEFSTRUCT forms are now created eagerly.
875 * fixed bug #345: backtraces from calls to undefined functions work
876 on x86 as well. Related bug #61 is now also partially fixed on x86
877 (backtraces from throws to unknown catch tags.)
878 * bug fix: lambda-list parsing is now stricter vrt. order and number
879 of lambda-list keywords.
880 * bug fix: as specified by AMOP, an error is signalled if a
881 class-option appears multiple times in a DEFCLASS form. (reported
883 * bug fix: RANDOM can be compiled when the compiler derives the type
884 of its numeric argument as a disjoint set of small integers.
885 (reported by Paul Dietz)
886 * bug fix: starting a core saved with shared objects loaded when
887 those objects are not available no longer causes threaded SBCL to
888 hang. (reported by Sean Ross)
889 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
891 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
892 argument, which must always be NIL. (reported by Kalle Niemitalo)
893 * bug fix: printing 1.0d+23 no longer results in an error.
894 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
895 * bug fix: structure slot setters preserve evaluation order. (thanks
897 * fixed some bugs related to Unicode integration:
898 ** RUN-PROGRAM can allow its child to take input from a Lisp
899 stream. (reported by Stefan Scholl)
900 ** ASDF-INSTALL successfully downloads .tar.gz files in all
901 locales. (reported by Ken Causey)
902 * fixed some bugs revealed by Paul Dietz' test suite:
903 ** INCF, DECF and REMF evaluate their place form as specified in
905 ** FORMATTER expands ~{ ~} iteration directives with V or #
906 parameters correctly.
907 ** FORMATTER deals with the ~@[ ~] conditional directive where the
908 consequent uses no arguments correctly.
909 ** the system has a partial understanding of the (COMPLEX RATIO)
911 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
914 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
915 * new feature: a build-time option (controlled by the :SB-UNICODE
916 keyword feature, enabled by default) for building the system with
917 support for the entire 21-bit character space defined by the
919 * new feature: the system now has rudimentary external-format
920 support; the primary user-visible change at this time is that
921 characters with the high bit set (such as lower-case-e-acute) will
922 print correctly to a terminal in a UTF-8 environment.
923 * minor incompatible change: BASE-CHAR no longer names a class;
924 however, CHARACTER continues to do so, as required by ANSI.
925 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
926 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
927 has been moved to the SB-EXT package (temporarily re-exported from
929 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
930 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
932 * fixed bug #351: better error-handlind and reporting for malformed
934 * fixed bug #350: bignum-printing is now more memory-efficient,
935 allowing printing of very large bignums, eg. (expt 2 10000000).
936 (reported by Bruno Haible)
937 * fixed bug #302: better primitive-type selection for intersection
939 * fixed bug #308: non-graphic characters now all have names, as
940 required. (reported by Bruno Haible)
941 * bug fix: redefining a class with different superclasses now correctly
942 removes it from the direct-subclasses of its previous superclasses.
943 (reported by David Morse)
944 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
945 new value now works. (reported by Bruno Haible)
946 * bug fix: correct canonicalization of multiple non-standard slot
947 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
948 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
949 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
950 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
951 now exists, an signals an error.
952 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
953 during macroexpansion for non-iteration variables as well. (reported
954 by Bruno Haible for CMUCL)
955 * bug fix: Cyclic structures and unprintable objects in compiler
956 messages no longer cause errors. (reported by Bruno Haible)
957 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
958 and READ-FROM-STRING all now return a primary value of NIL if
959 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
960 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
961 (reported by Bruno Haible for CMUCL)
962 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
963 do not designate a condition. (reported by Bruno Haible for
965 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
966 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
967 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
968 permitting resolution in favour of any of the conflicting symbols.
969 (reported by Bruno Haible for CMUCL)
970 * bug fix: EQUAL compiler optimizations is less aggressive on
971 strings which can potentially compare true despite having distinct
972 specialized array element types.
973 * bug fix: unit enumerations can be defined without dividing by
974 zero. (thanks to Vincent Arkesteijn)
975 * FORMAT compile-time argument count checking has been enhanced.
976 (report from Bruno Haible for CMUCL)
977 * a partial workaround for the bug 262: the compiler does not try to
978 inline-expand a local function doing RETURN-FROM from a deleted
979 BLOCK. (thanks to Peter Denno for the bug report and to David
980 Wragg for the simple test case)
981 * fixed some bugs revealed by Paul Dietz' test suite:
982 ** RENAME-PACKAGE allows all package designators as new package
984 ** constraint propagation and lambda variable substitution are
985 more cautious in dealing with partially deleted code.
986 ** compiler sometimes lost reoptimization passes.
987 ** CERROR, given a condition as condition designator, passes its
988 remaining arguments to the continue format control without
990 ** Case-altering FORMAT directives work correctly on non-ASCII
992 ** The REAL type specifier handles bounds outside the floating
993 point ranges without signalling FLOATING-POINT-OVERFLOW.
994 ** Functions with IR1-transformations can create intercomponent
995 references to global functions.
996 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
998 ** FORMAT ~R treats a nil value for its first parameter correctly.
1000 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1001 * enhancement: saving cores with foreign code loaded is now
1002 supported on x86/NetBSD and sparc/Linux in addition to the previously
1003 supported platforms.
1004 * bug fix: on some platforms repeated installations caused multiple
1005 copies of HTML documentation to be installed -- should not happen
1006 any more. (reported by Stefan Scholl)
1007 * bug fix: parsing self-recursive alien record types multiple times
1008 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1009 original patch by Helmut Eller for CMUCL)
1010 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1011 (thanks to Richard Kreuter)
1012 * bug fix: defining classes whose accessors are methods on existing
1013 generic functions in other (locked) packages no longer signals
1014 bogus package lock violations. (reported by François-René Rideau)
1015 * bug fix: special variables as DEFMETHOD parameters no longer have
1016 associated bogus type declarations. (reported by David Wragg and
1018 * bug fix: read-write consistency on streams of element-type
1019 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1020 * bug fix: redefiniton of the only method of a generic function with
1021 no DEFGENERIC no longer emits a full WARNING. In addition,
1022 redefinition of generic functions with no DEFGENERIC to an
1023 incompatible lambda list now signals an error. (thanks to Zach
1025 * bug fix: DEFGENERIC now works even when there's a function of the
1026 same name in an enclosing lexical environment. (thanks to Zach
1028 * fixed compiler failure, caused by instrumenting code during
1029 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1030 * optimization: added loop analysis and improved register allocation
1031 * fixed some bugs revealed by Paul Dietz' test suite:
1032 ** POSITION on displaced vectors with non-zero displacement
1033 returns the right answer.
1034 ** (SIMPLE-STRING) is a valid type specifier for sequence
1036 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1038 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1039 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1041 ** The justification version of the FORMAT ~< directive treats
1042 non-zero minpad parameter correctly.
1044 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1045 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1046 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1047 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1048 the supported interface.
1049 * new feature: Single-stepping of code compiled with DEBUG 2 or
1050 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1051 * new feature: saving cores with foreign code loaded is now
1052 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1053 Timothy Moore's work for CMUCL)
1054 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1055 parameters to * instead of NIL if no initform is supplied.
1056 (reported by Johan Bockgaard)
1057 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1058 correctly when FUNCALL appears as the car of the form. Note:
1059 despite this FUNCALL forms are not currently subject to
1060 compiler-macro expansion. (port of Raymond Toy's fix for the
1061 same from CMUCL, reported by Johan Bockgaard)
1062 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1063 (thanks for Teemu Kalvas)
1064 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1065 case instead of terminating the iteration (thanks for Julian
1066 Squires, Sean Champ and Raymond Toy)
1067 * bug fix: incorrect expansion of defgeneric that caused a style
1068 warning. (thanks for Zach Beane)
1069 * bug fix: slot accessor effective method computation works properly
1070 for classes with multiple non-standard applicable methods on
1071 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1072 * on x86 compiler supports stack allocation of results of LIST and
1073 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1074 CMUCL implementation by Gerd Moellmann)
1075 * fixed some bugs revealed by Paul Dietz' test suite:
1076 ** FORMAT strings with both the ~<~:;~> form of the justification
1077 directive and pretty-printing directives cause an error.
1079 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1080 * incompatible change: the internal functions
1081 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1082 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1083 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1084 instead of the old functions.
1085 * new feature: on platforms where "dladdr" is available foreign
1086 function names now appear in backtraces. (based on Helmut Eller's
1088 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1089 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1091 * documentation: ASDF manual is now distributed with SBCL.
1092 * bug fix: SBCL can now load its contributed modules with REQUIRE
1093 even if the system-provided entries have been removed from
1094 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1096 * bug fix: backtraces involving undefined functions or assembly
1097 routines are more informative. (thanks to Brian Downing)
1098 * bug fix: mutually referent alien structures now work correctly.
1099 (reported by Rick Taube)
1100 * bug fix: structures defined by WITH-ALIEN can be referred to
1101 within other definitions in the same WITH-ALIEN.
1102 * bug fix: division operators (MOD, TRUNCATE and the like) with
1103 constant zero divisors and integer dividends no longer generate
1105 * bug fix: provide default methods for INPUT-STREAM-P and
1106 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1107 * bug fix: improve the detection and resolution of MOP metacycles
1108 (where effective method computation depends on the generic function
1109 having its effective method computed). (reported by Bruno Haible)
1110 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1111 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1112 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1113 * bug fix: pathnames with relative directory components can be
1114 represented relative to default pathnames.
1115 * optimization: in taking the GCD of bignums, reduce the two bignums
1116 to approximately the same size (using Euclid's algorithm) before
1117 applying the more sophisticated binary GCD. (thanks to Juho
1119 * optimization: COUNT on bitvectors now operates word-at-a-time.
1120 * optimization: ASH with a positive, but not necessarily constant,
1121 (leftwards) shift, when in a modular context, is compiled to a
1123 * fixed some bugs revealed by Paul Dietz' test suite:
1124 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1125 if the corresponding argument is NIL.
1126 ** FORMAT directives accepting a minpad parameter treat negative
1128 ** literal commas as character parameters to FORMAT directives are
1130 ** literal spaces directly after ~<Newline> directives within a
1131 format-logical-block (~:< ~@:>) do not induce :FILL-style
1132 conditional newlines.
1133 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1134 as specified: it no longer includes conditional newlines).
1135 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1137 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1138 :PER-LINE-PREFIX argument does not evaluate to a string.
1140 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1141 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1142 the manual for details; for now, package locks can be disabled by
1143 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1144 if no major problems are found then it is likely that they will be
1145 compiled in unconditionally.
1146 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1147 unsupported operators on all platforms. To load a shared library
1148 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1149 object file, link it into a shared library outside of SBCL and
1150 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1152 * bug workaround: ROOM T and the GC were not working together
1153 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1154 reporting facility aren't preserved. That reporting has been
1155 disabled, so now until and unless someone figures out how to make it
1156 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1157 * minor incompatible change: as threatened around sbcl-0.8.0, the
1158 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1159 The symbols are also exported from SB-PCL for backwards
1160 compatibility, but more so than before SB-PCL should be treated as
1161 an implementation-internal package.
1162 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1164 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1165 It is known as of this release not to work on the Alpha, however.
1166 * fixed bug #167: errors signalled due to illegal syntax in method
1167 bodies are now more legible.
1168 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1169 designators and can hence be used with TYPEP.
1170 * fixed bug #333: CHECK-TYPE now ensures that the type error
1171 signalled, if any, has the right object to be accessed by
1172 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1173 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1174 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1176 * fixed bug #334: programmatic addition of slots using specialized
1177 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1178 and :ALLOCATION :CLASS slots.
1179 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1180 float exponents. (rereported by Peter Seibel)
1181 * fixed a bug: #\Space (and other whitespace characters) are no
1182 longer considered to be macro characters in standard syntax by
1183 GET-MACRO-CHARACTER.
1184 * fixed bug: initialization of condition class metaobjects no longer
1185 causes an instance of the condition to be created. (reported by
1187 * fixed bug: it is now possible to have slots such that
1188 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1189 description is neither :INSTANCE nor :CLASS.
1190 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1191 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1192 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1193 non-standard SLOT-DEFINITION-ALLOCATION values.
1194 * fixed bugs: various race conditions handling exiting threads.
1195 CL-PPCRE's thread torture test now passes.
1196 * fixed arguably-a-bug: GC time proportional to number of threads in
1197 system even when most of them are idle
1198 * optimization: improved performance of BIT and SBIT on bit-vectors.
1199 * .fasl file incompatibility: The fasl file version number has
1200 been incremented because of changes associated with package locks.
1202 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1203 * minor incompatible change: the system no longer provides
1204 optimization hints (conditions which are TYPEP
1205 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1206 mode; these hints are still emitted when higher SPEED optimization
1208 * new contrib module: a sampling profiler (profiling by statistical
1209 sampling, rather than by instrumenting functions) is available as
1210 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1211 * the behaviour of the standard function ED is now customizeable by
1212 third parties through a hook variable: see ED's documentation
1213 string for information on the protocol.
1214 * the compiler no longer emits efficiency notes for (FUNCALL X)
1215 when the type of X is uncertain under default optimization
1217 * fixed bug 276: mutating a binding of a specialized parameter to a
1218 method to something that is not TYPEP the specializer is now
1220 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1221 exhibit the required behaviour on the x86 platform. (thanks to
1222 Peter van Eynde, Eric Marsden and Bruno Haible)
1223 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1224 even for difficult arguments. (reported by Peter Graves)
1225 * fixed bug 141a: the backquote printer now descends quoted
1227 * fixed another bug in backquote printing: no more destructive
1228 modification of the form's list structure. (reported by Brian
1230 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1231 move between its address being taken and the call to
1232 interrupt_thread, fixing a crashing race condition.
1233 * the SB-POSIX contrib implementation has been adjusted so that it
1234 no longer exhibits ridiculously poor performance when constructing
1235 instances corresponding to C structs.
1237 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1238 * minor incompatible change: the sb-grovel contrib now treats C
1239 structures as alien (in the sense of SB-ALIEN) objects rather than
1240 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1241 has implications for memory management of client code
1242 (sb-grovel-returned objects must now be manually managed) and for
1243 type safety (alien objects now have full types).
1244 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1245 used to control emission of compiler diagnostics, rather than the
1246 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1247 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1248 quality should be considered deprecated.
1249 * install.sh now installs the user manual as well
1250 * (not quite a new documentable feature, but worth considering in
1251 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1252 beginnings of a semantically meaningful condition hierarchy is
1253 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1255 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1256 designator as the defaults argument.
1257 * fixed bug: Displaced arrays whose displaced-to array has become
1258 too small now cause ARRAY-DIMENSION to signal an error, providing
1259 for safer bounds-checking. (reported by Bruno Haible)
1260 * fixed bug: DEFCLASS slot definitions with identical :READER and
1261 :WRITER names now signal a reasonable error. (reported by Thomas
1263 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1265 * fixed bug: Invalid slot specification errors now print correctly.
1266 (thanks to Zach Beane)
1267 * fixed bug 320: Shared to local slot value transfers in class
1268 redefinitions now happen corrently from superclasses as
1269 well. (reported by Bruno Haible)
1270 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1272 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1273 improper lists correctly. (reported by Bruno Haible)
1274 * fixed bug 313: source-transform for <fun-name> was erroneously
1275 applied to a call of a value of a variable with name <fun-name>.
1276 (reported by Antonio Menezes Leitao)
1277 * fixed bug 307: The obsolete instance protocol ensures that
1278 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1279 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1280 remove dead unknown-values globs from the middle of the stack.
1281 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1282 easier to resume long computations after using *BREAK-ON-SIGNALS*
1283 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1284 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1285 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1286 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1287 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1288 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1290 * fixed a (fairly theoretical) bug in string printing: if
1291 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1292 does not have array-element-type equal to the most general string
1294 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1295 function name. (thanks to Nikodemus Siivola)
1296 * fixed bug: compile-time format string checker failed on
1297 non-closed ~{. (reported by Thomas F Burdick)
1298 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1299 don't warn on legal loop code involving more than one aggregate
1300 boolean. (thanks to Nikodemus Siivola)
1301 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1302 in keyword position to MAKE-PACKAGE was not being reported as
1304 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1305 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1307 * fixed bugs 280 and 312: the checking for multiple definitions in a
1308 file is less likely to become confused by uses of inline
1310 * fixed bug: the #S reader macro performs the keyword coercion
1311 specified for slot names. (reported by Kalle Niemitalo)
1312 * fixed bug: lambda lists may contain symbols whose names start with
1313 & but are not lambda-list-keywords; their occurrence triggers a
1315 * fixed bug 321: define-method-combination argument lambda lists do
1316 not cause invalid code to be generated when &optional or &aux
1317 variables have default values. (reported by Bruno Haible)
1318 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1319 have CLOS classes; this appears also to have fixed reported
1320 instability in stack exhaustion detection.
1321 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1322 MUFFLE-WARNING when no associated restart is present is now
1324 * optimization: rearranged the expansion of various defining macros
1325 so that each expands into only one top-level form in a
1326 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1328 * optimization: used a previously little-used slot in symbols to
1329 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1331 * fixed some bugs revealed by Paul Dietz' test suite:
1332 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1334 ** Fixed an optimization bug related to inheritance of initforms
1335 from local to shared slots.
1336 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1337 ** CAST optimizer forgot to flush argument derived type.
1338 ** print/read consistency on floats is now orders of magnitude
1339 more likely. (thanks also to Bruno Haible for a similar report
1341 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1342 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1343 for objects of type REAL. Make it so.
1344 ** SXHASH is specified (infelicitously) to respect similarity,
1345 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1346 it so. (thanks to Markus Ziegler)
1347 ** on the Alpha, the compiler succeeds in compiling functions
1348 returning a known number of arguments greater than 63.
1349 ** fixed handling of invalid NIL arguments in keyword position
1351 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1353 ** provided a readably-printable representation for RANDOM-STATE
1355 ** ensured that pathnames, where they have a namestring, always
1356 print using #P"..." syntax.
1358 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1359 * Support for the forthcoming 2.0 version of the NetBSD kernel
1360 running on x86 hardware has been added. (thanks to Perry
1361 E. Metzger most immediately, and others for their past work)
1362 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1363 current release version; SBCL's OpenBSD support had been broken
1364 since about the time of OpenBSD's switch to ELF binary format.)
1365 * [placeholder for DX summary]
1366 ** user code with &REST lists declared dynamic-extent, under high
1367 speed or space and low safety and debug optimization policy.
1368 * The manual has been converted to Texinfo format and the debugger
1369 chapter from the cmucl manual has been added.
1370 * A facility has been added to extract documentation strings from
1371 sbcl and store them as Texinfo-formatted snippets for inclusion in
1372 the manual (via Texinfo's @include directive)
1373 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1374 the test case to Dave Roberts)
1375 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1376 pointers. (reported by Sean Ross)
1377 * bug fix: PROFILE output is printed nicely even for large numerical
1378 values. (thanks to Zach Beane)
1379 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1380 greater than 32 handle EOF correctly.
1381 * bug fix: on X86 an immediate argument of the IMUL instruction is
1382 correctly printed in disassembly. (thanks to Lutz Euler)
1383 * bug fix: class slots in redefined classes preserve their old
1384 values. (thanks to Bruno Haible and Nikodemus Siivola)
1385 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1386 succeeds. (reported by Marco Baringer)
1387 * fixed some bugs revealed by Paul Dietz' test suite:
1388 ** READ-SEQUENCE now works on ECHO-STREAMs.
1389 ** RATIONALIZE works more according to its specification. (thanks
1392 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1393 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1394 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1395 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1396 should matter to you only if you rebind the printer control
1397 variables and then find you want different bindings in the
1398 debugger than in the ordinary execution of your program.)
1399 * The runtime build system has been tweaked to support building
1400 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1401 assembler and linker. (thanks to Nikodemus Siivola)
1402 * Unbound, undefined, undeclared variables now trigger full
1403 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1404 more often programmer error than deliberate exploitation of undefined
1406 * optimization: the hash algorithm for strings has changed to one
1407 that is less vulnerable to spurious collisions. (thanks to Juho
1409 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1410 needless bounds checking. (thanks to Juho Snellman)
1411 * optimization: implemented multiplication as a modular
1412 (UNSIGNED-BYTE 32) operation on the PPC backend.
1413 * fixed some bugs revealed by Paul Dietz' test suite:
1414 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1416 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1417 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1418 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1420 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1422 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1424 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1425 their output stream on EOF from read.
1426 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1427 have been read to end-of-file.
1428 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1430 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1431 description of determination of which consecutive characters
1433 ** Printing the "Space" character with escaping on now yields "#\\ ",
1434 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1435 ** Reading floating-point numbers with *READ-BASE* set to a number
1436 less than 10 works correctly.
1437 ** Reading floating-point numbers with *READ-BASE* set to a number
1438 more than 10 works correctly.
1439 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1440 the readtable currently in effect.
1442 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1443 * minor incompatible change: parsing of namestrings on a physical
1444 (Unix) host has changed; numbers after the final #\. in a
1445 namestring are no longer interpreted as a version field. This is
1446 intented to be largely invisible to the user, except that the
1447 meaning of the namestring "*.*.*" has changed: it now refers to a
1448 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1449 should usually be replaced by
1450 (make-pathname :name :wild :type :wild :version :wild)
1451 with the added benefit that this is more likely to be portable.
1452 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1453 option to OPEN now signals an error if the file being opened
1454 exists; this may have an impact on existing code.
1455 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1456 signals received, on the PowerPC platforms (both Linux and
1457 Darwin). (thanks to Pierre Mai for pointing out the location of
1459 * several fixes on OS X: The system now builds and runs cleanly on
1460 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1461 (thanks to Brian Mastenbrook)
1462 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1463 second-resolution: integer multiples of 1/3600 between -24 and 24.
1464 (thanks to Vincent Arkesteijn)
1465 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1466 type when called with 1 argument; PEEK-CHAR checked type of
1467 PEEK-TYPE only after having read first character from a
1468 stream. (reported by Peter Graves)
1469 * bug fix: the garbage collector now has much better locality
1470 behaviour, and in particular no longer treats all memory as being
1471 exhausted when many small objects point to each other in a deeply
1473 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1474 recognized as being TYPEP their class.
1475 * bug fix: the PUSHNEW documentation string has been corrected.
1476 (thanks to Vincent Arkesteijn)
1477 * bug fix: defaulting of the value for the last of an atypically
1478 large number of multiple values being bound was not being
1479 performed correctly on the Alpha or PPC platforms
1480 * optimization: implemented multiplication as a modular
1481 (UNSIGNED-BYTE 32) operation on the x86 backend.
1482 * optimization: SEARCH on simple-base-strings can now be open-coded.
1483 (see also contrib/compiler-extras.lisp for inspiration for
1484 teaching the compiler about the Boyer-Moore algorithm).
1485 * value, returned by MAX (and MIN) called with several EQUALP, but
1486 not EQL, arguments now does not depend on compiler settings.
1487 * fixed some bugs revealed by Paul Dietz' test suite:
1488 ** in stack analysis liveness information is propagated from
1489 non-local entry points.
1490 ** pathwise CAST removing failed when the CAST node did not start
1492 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1493 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1495 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1496 host is already defined.
1497 ** RENAME-FILE works on streams instead of signalling an internal
1499 ** PEEK-CHAR uses the current readtable when determining whether
1500 or not a character is whitespace.
1501 ** MERGE-PATHNAMES handles the case when the pathname does not
1502 specify a name while the default-pathname specifies a version.
1503 ** Pathnames now stand a better chance of respecting print/read
1505 ** Attempting to use standardized file system operators with a
1506 pathname with invalid :DIRECTORY components signals a
1508 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1510 ** DIRECTORY on logical pathnames is more correct.
1511 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1512 signal a TYPE-ERROR if their argument is not a stream.
1513 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1514 designator argument does not designate a stream.
1515 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1516 examining the synonym.
1517 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1519 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1520 element-type larger than ([UN]SIGNED-BYTE 32).
1522 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1523 * When built with the :SB-FUTEX feature, threaded builds now take
1524 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1525 for faster/more reliable mutex and condition variable support.
1526 * Incompatible change (but one you probably shouldn't have been using
1527 anyway): the interface and code for arbitrating between multiple
1528 threads in the same user session has been redesigned.
1529 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1530 error when called without an explicit environment argument.
1531 (thanks to Nikodemus Siivola)
1532 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1533 confused about their position. (thanks to Adam Warner and Gerd
1535 * bug fix: Pretty printing backquoted forms with unquotations in the
1536 argument list position of various code constructs such as LAMBDA
1537 now works correctly. (reported by Paul Dietz)
1538 * bug fix: Pretty printing unquotations no longer loses all
1539 stream position information.
1540 * optimization: performance of string output streams is now less
1541 poor for multiple small sequence writes.
1542 * optimization: performance of CSUBTYPEP in the presence of complex
1543 expressions involving CONS and NOT many times has been improved.
1544 (reported by Paul Dietz)
1545 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1547 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1548 streams for the REPL, for the debugger, and so on. (thanks to
1550 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1551 * fixed some bugs revealed by Paul Dietz' test suite:
1552 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1553 is ignored if it is too small, rather than propagating through
1554 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1555 ** extremely complex negations of CONS types were not being
1556 sufficiently canonicalized, leading to inconsistencies in
1558 ** VALUES tranformer lost derived type.
1560 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1561 * fixed a bootstrapping bug: the build process no longer assumes
1562 that the various BOOLE-related constants have the same value in
1563 host and target lisps. (noted by Paul Dietz' test suite on an
1564 SBCL binary built from CLISP)
1565 * The system can now be dynamically linked on the MIPS platform,
1566 which enables dynamic loading of foreign code from Lisp. (thanks
1567 to Ralf Baechle for discussions on the MIPS ABI)
1568 * The system now records debugging information for its own source
1569 files in a filesystem-position-independent manner, relative to
1570 the "SYS" logical host.
1571 * fixed a compiler bug: MV-LET convertion did not check references
1572 to the "max args" entry point. (reported by Brian Downing)
1573 * tweaked disassembly notes to be less confident about proclaiming
1574 some instruction as an LRA. (thanks to Brian Downing)
1575 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1576 now each have their own history, command character, and other
1577 characteristics. (thanks to David Lichteblau)
1578 * fixed some bugs revealed by Paul Dietz' test suite:
1579 ** compiler failure in compiling LOGAND expressions including a
1581 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1582 shift greater than 32.
1583 ** FLUSH-DEST did not mark blocks for type check regeneration.
1584 ** HANDLER-CASE failed to accept declarations in handler clauses
1585 in some circumstances.
1587 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1588 * New code in contrib/sb-introspect (still probably not entirely
1589 stable yet) provides some support for smart Lisp development
1590 environments like SLIME.
1591 * The conditions signalled for errors occurring when loading .fasl
1592 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1593 in a way which should help ASDF recover gracefully.
1594 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1595 stuff has been cleaned up. If you code contrib/ stuff, this might
1596 affect you, and you can look at contrib/README, contrib/STANDARDS,
1597 and/or the 0.8.4.27 diff to check.
1598 * In full calls the compiler now does not generate checks for declared
1599 argument types for all arguments.
1600 * various threading fixes
1601 ** and some experimental patches which didn't make it into
1602 the main tree for this release, but which are shipped in
1603 contrib/experimental-thread.patch as a possible fix for some
1604 failures (deadlock, spinning...) in GC-intensive multithreaded
1606 * fixed PPC build problem (source code incompatibility of different
1607 library versions): added offsetof() hackery which attempts to divine
1608 where glibc maintainers put uc_mcontext today
1609 * fixed bug 282: compiler does not trust type assertions while passing
1610 arguments to a full call.
1611 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1612 &OPTIONAL VALUES type parameter.
1613 * fix bug 214: algorithm for noting rejected templates is now more
1614 similar to that of template seletion. (also reported by rydis on
1616 * fixed bug 141b: printing backquoted information readably and prettily
1617 inserts a space where necessary.
1618 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1619 (CHARACTER 10) are now reported as errors, rather than propagated
1620 as unknown types. (reported by piso on #lisp)
1621 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1622 with values NIL and :ERROR. (thanks to Milan Zamazal)
1623 * fixed bug 191c: CLOS now does proper keyword argument checking as
1624 described in CLHS 7.6.5 and 7.6.5.1.
1625 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1626 longer raise an error; further, using a list as a for-as-arithmetic
1627 counter now raises a meaningful error.
1628 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1629 now understood by sequence creation functions such as MAKE-SEQUENCE
1631 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1632 a STRING-INPUT-STREAM.
1633 * compiler enhancement: SIGNUM is now better able to derive the type
1635 * type declarations inside WITH-SLOTS are checked. (reported by
1637 * fixed some bugs revealed by Paul Dietz' test suite:
1638 ** incorrect optimization of TRUNCATE for a positive first
1639 argument and negative second.
1640 ** compiler failure in let-convertion during flushing dead code.
1641 ** compiler failure while deriving type of TRUNCATE on an
1642 interval, containing 0.
1643 ** ASH of a negative bignum by a negative bignum count now returns
1645 ** intersection of CONS types now canonicalizes properly, fixing
1646 inconsistencies in SUBTYPEP.
1648 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1649 * incompatible change: The --disable-debugger command line
1650 option now clobbers the debugger at a more fundamental
1651 level, by redefining #'INVOKE-DEBUGGER instead of by
1652 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1653 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1654 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1655 enter the debugger REPL and then suffer recursive errors
1656 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1657 while under the new system, BREAK in --disable-debugger mode
1658 terminates the system just as an unhandled error would.
1659 * fixed compiler performance when processing loops with a step >1;
1660 * bug fix: DOCUMENTATION now retrieves generic function
1661 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1662 support has been systematized, and now supports the methods
1663 specified by ANSI, along with a default method and a method for
1664 slot documentation. (reported by Nathan Froyd)
1665 * bug fix: effective methods associated with a generic function are
1666 no longer cached over a change of that generic function's method
1667 combination. (reported by Andreas Fuchs)
1668 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1669 names a non-existent directory. (thanks to Andreas Fuchs)
1670 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1671 the PPC platform, lead to stack corruption; this has been fixed.
1672 (reported by Rainer Joswig)
1673 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1674 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1675 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1676 arithmetic in general, is now much more reliable on the PPC
1678 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1679 platform now returns the right answer.
1680 * optimization: restored some effective method precomputation in
1681 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1682 precomputation is now tunable.
1683 * optimization: compiler-internal data structure use has been
1684 reviewed, and changes have been made that should improve the
1685 performance of the compiler by about 20%.
1686 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1687 simple-base-strings and simple-bit-vectors is improved.
1688 * optimization: the optimization of 32-bit logical and arithmetic
1689 functions introduced in version 0.8.3 on the x86 has been
1690 implemented on the mips, ppc and sparc platforms; an
1691 implementation of the same facility, but for 64-bit arithmetic,
1692 has been added for the alpha.
1693 * microoptimization: the compiler is better able to make use of the
1694 x86 LEA instruction for multiplication by constants.
1695 * bug fix: in some situations compiler did not report usage of
1696 generic arithmetic in (SPEED 3) policy.
1697 * bug 145b fix: compiler used wrong type specifier while converting
1698 MEMBER-types to numeric.
1699 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1701 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1702 index argument now works properly on the Alpha platform.
1703 * bug fix: floating point exception treatment on the Alpha platform
1705 * bug fix: FILE-POSITION works much better on string input and
1706 output streams. (thanks to Nikodemus Siivola)
1707 * bug fix: many threading/garbage collection symptoms sorted.
1708 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1709 might be pseudo-atomic.
1710 * internal change: Stopping for GC is now done with signals not
1711 ptrace. GC is now done in whichever thread wanted it, instead of
1713 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1715 * bug fix: result form in DO is not contained in the implicit
1717 * incompatible change: ICR structure is changed; the value part of
1718 CONTINUATION is now called LVAR; corresponding functions are
1719 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1720 * added type deriver for ISQRT (thanks to Robert E. Brown).
1721 * bug fix: better support for loading from the command line when an
1722 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1724 * fixed some bugs revealed by Paul Dietz' test suite:
1725 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1726 ** ROUND and FROUND now give the right answer when given very
1727 small float arguments.
1728 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1730 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1731 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1732 ** LCM should return a non-negative integer.
1733 ** PARSE-INTEGER returned the index of a terminator instead of the
1734 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1735 ** PARSE-INTEGER returned an incorrect index being applied to a
1737 ** LCM with two arguments of 0 returns 0 rather than signalling
1739 ** unsigned addition of a 32-bit constant with the high bit set no
1740 longer causes an internal compiler error on the x86.
1741 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1742 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1743 with negative last argument.
1744 ** byte specifiers with zero size and position no longer cause
1745 an error during type derivation.
1746 ** bignum multiplication on the Alpha platform now returns the
1748 * porting: The system now builds on SuSE AMD64, although it still
1749 generates a 32-bit binary.
1750 * .fasl file incompatibility: The fasl file version number has
1751 been incremented (because of the changes to internal compiler
1752 data structures referred to above).
1754 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1755 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1756 more accurately, on the Darwin kernel running on PowerPC hardware.
1757 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1758 * Compiler code deletion notes now signal a condition of type
1759 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1760 an associated MUFFLE-WARNING restart.
1761 * The compiler now performs limited argument count validation of
1762 constant format strings in FORMAT, and where appropriate in ERROR,
1763 CERROR and WARN. (thanks to Gerd Moellmann)
1764 * New ASDF-INSTALL contrib can be used for automatic download and
1765 installation of third-party Lisp code from CCLAN or other sites
1767 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1768 which forces another thread to execute a function supplied by the
1770 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1771 now accept and act upon their :ELEMENT-TYPE keyword argument.
1772 (reported by Martin Atzmueller, Edi Weitz)
1773 * bug fix: FILE-POSITION now accepts position designators up to
1774 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1775 is the greater. (thanks to Patrik Nordebo)
1776 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1777 Kalle Olavi Niemitalo)
1778 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1779 printable. (reported by Eric Marsden)
1780 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1781 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1782 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1783 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1784 (thanks to Stig Sandoe)
1785 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1786 UNREAD-CHAR now correctly includes the unread character in the
1787 target sequence. (thanks to Gerd Moellmann)
1788 * bug fix in threaded builds: the system can now be suspended and
1789 resumed by shell job control with minimal disruption.
1790 * bug fixes in times and timezones >2038AD
1791 * better handling of "where is GNU make?" problem in build scripts
1792 (thanks to Nikodemus Siivola)
1793 * new optimization: inside a named function any reference to a
1794 function with the same name is considered to be a self-reference;
1795 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1796 optimization quality.
1797 * new optimization on x86: logical functions and + now have
1798 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1799 used when the result is truncated to 32 bits.
1800 * VALUES declaration is partially enabled.
1801 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1802 * fixed some bugs revealed by Paul Dietz' test suite:
1803 ** The system now obeys the constraint imposed by
1804 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1805 types form a lattice under type intersection.
1806 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1807 ** ASSOC now ignores NIL elements in an alist.
1808 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1809 and (1+ MOST-POSITIVE-FIXNUM) answers.
1810 ** The addition of a method with invalid qualifiers to a generic
1811 function does not cause an error to be signalled immediately;
1812 a warning is signalled, and the error is generated only on
1813 calling the generic function.
1814 * changed .fasl file version number, in part to add type codes for
1815 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1816 obscure ANSI requirements
1818 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1819 * fixed bug 148: failure to inline-expand a local function left
1820 garbage, confusing the compiler.
1821 * fixed bugs 3cd: structure slot readers perform type check if the
1822 slot can have an invalid value (i.e. it is either not initialized
1823 or can be written with a less specific slot writer).
1824 * bug fix: the compiler now traps array references to elements off
1825 the end of an array; previously, the bounds checking in some
1826 circumstances could go off-by-one.
1827 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1829 * type declarations for array element types now obey the description
1830 on the CLHS page "Declaration TYPE", as per discussions on
1831 sbcl-help around 2003-05-08. This means that a declaration
1832 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1833 declaration, all references to BAR will be asserted or assumed
1834 (with THE, so dependent on compiler policy) to involve objects of
1835 type FOO. Note that no such declaration is implied in
1836 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1837 * declared types of functions from the "Conditions"
1838 chapter. (reported by Paul Dietz)
1839 * bug fix: CERROR accepts a function as its first argument.
1840 * bug fix: NTH an NTHCDR accept a bignum as index
1841 arguments. (reported by Adam Warner)
1842 * optimization: character compare routines now optimize comparing
1843 against a constant character. (reported by Gilbert Baumann)
1844 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1845 argument now works properly on the MIPS platform.
1846 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1847 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1848 declared to have a functional type, does not cause an error
1850 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1851 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1852 * fixed bug: if last continuation of a deleted block has a
1853 destination, this destination should be deleted too. (reported by
1855 * fixed a bug in the bootstrap process: the host compiler's values
1856 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1857 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1858 test case from Patrik Nordebo)
1859 * improved the ability of the disassembler on the PPC platform to
1860 provide helpful disassembly notes.
1861 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1862 the class in more cases than previously.
1863 * bug fix: FILE-POSITION now understands :START and :END for
1864 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1865 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1866 8) data. (thanks to David Lichteblau)
1867 * bug fix: it is possible to add a method to a generic function
1868 without lambda list.
1869 * bug fix: reader failed to signal END-OF-FILE inside an
1870 object representation. (reported by Nikodemus Siivola)
1871 * fixed some bugs revealed by Paul Dietz' test suite:
1872 ** LAST and [N]BUTLAST should accept a bignum.
1873 ** condition slot accessors are methods.
1874 ** (VECTOR NIL) is a subtype of STRING.
1876 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1877 * minor incompatible change: some nonsensical specialized lambda
1878 lists (used in DEFMETHOD) which were previously ignored now signal
1880 * minor incompatible change: the system is now aware of the types of
1881 variables in the COMMON-LISP package, and will signal errors for
1882 most violations of these type constraints (where previously they
1883 were silently accepted).
1884 * minor incompatible change: COMPILE-FILE now uses the freedom
1885 afforded (ANSI 3.2.2.3) to use derived function types for
1886 functions defined in the same file. This also permits the system
1887 to warn on static type mismatches and function
1888 redefinition. (Currently it does not work with high DEBUG level.)
1889 * minor incompatible change: VALUES declaration is disabled.
1890 * When issuing notes, the compiler now signals a condition of type
1891 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1892 restart for use in user handlers. It is expected that the
1893 COMPILER-NOTE condition will eventually become a condition
1894 supertype to a hierarchy of note types, which will then be
1895 handleable in a similar fashion. However, at the moment, no such
1896 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1897 but it's an implementation detail, not a classification for the
1899 * Changes in type checking closed the following bugs:
1900 ** type checking of unused values (192b, 194d, 203);
1901 ** template selection based on unsafe type assertions (192c, 236);
1902 ** type checking in branches (194bc).
1903 * A short form of VALUES type specifier has ANSI meaning (it has
1904 increased the number of situations when SBCL cannot perform type
1906 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1907 keywords or constants is permissible.
1908 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1909 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1910 classes. (thanks to Antonio Martinez)
1911 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1912 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1913 argument to a pretty-print stream. Instead, it leaves any such
1914 operations to DESCRIBE-OBJECT methods.
1915 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1917 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1918 lambda lists. (thanks to David Lichteblau)
1919 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1920 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1921 (thanks to Gerd Moellmann)
1922 * fixed bug 246: increased compilation speed of long
1923 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1925 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1927 * DEFCONSTANT now throws a condition of type
1928 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1929 constant to a non-EQL value; CONTINUE and ABORT restarts
1930 respectively change and preserve the value.
1931 * fixed bug 63: The code walker, part of the implementation of CLOS,
1932 is now better at handling symbol macros.
1933 * bug fix: There is no longer an internal implementation type named
1934 CL:LENGTH. (reported by Raymond Toy)
1935 * bug fix: In macro-like defining macros/special operators the
1936 implicit block does not enclose the lambda list.
1937 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1938 enclosed in parentheses) are not suitable as type specifiers, and
1939 their use properly signals an error now.
1940 * bug fix: An argument count mismatch for a type specifier in code
1941 being compiled no longer causes an unhandled error at compile
1942 time, but signals a compile-time warning.
1943 * fixed simple vector readable printing
1944 * bug fix: DESCRIBE takes more care over whether the class
1945 precedence list slot of a class is bound before accessing it.
1946 (reported by Markus Krummenacker)
1947 * bug fix: FORMATTER can successfully compile pretty-printer format
1948 strings which use variants of the ~* directive inside.
1949 * bug fix: SEARCH now applies its TEST predicate to the elements of
1950 the arguments in the correct order. (thanks to Wolfhard Buss)
1951 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1952 in type inference. (thanks to Robert E. Brown)
1953 * bug fix: Reading in symbols with an explicit package name of ""
1954 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1955 * fixed some bugs revealed by Paul Dietz' test suite:
1956 ** NIL is now allowed as a structure slot name.
1957 ** Arbitrary numbers, not just REALs, are allowed in certain
1958 circumstances in LOOP for-as-arithmetic clauses.
1959 ** Multiple class redefinitions before slot access no longer
1960 causes a type error.
1961 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1962 association between the name and a class.
1963 ** Generic functions with non-standard method-combination and over
1964 five methods all of which return constants no longer return NIL
1965 after the first few invocations. (thanks to Gerd Moellmann)
1966 ** CALL-NEXT-METHOD with no arguments now passes the original
1967 values of the arguments, even in the presence of assignment.
1968 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1970 ** DISASSEMBLE works with closures and funcallable instances.
1971 ** ADD-METHOD now returns the generic function, not the new method.
1972 ** FIND-METHOD signals an error if the lengths of the specializers
1973 is incompatible with the generic function, even if the ERRORP
1975 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1976 which its argument is a member.
1977 ** DEFCLASS only redefines the class named by its class-name
1978 argument if that name is the proper name of the class;
1979 otherwise, it creates a new class.
1980 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1981 of the UNBOUND-SLOT condition to the name of the slot.
1982 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1983 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1984 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1985 SLOT-MAKUNBOUND in the specified fashion.
1987 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1988 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1989 cross-compilation host. As a consequence, we can now bootstrap our
1990 way up to SBCL starting with a bare gcc toolchain and human-readable
1991 source code (first the source to CLISP, then the source to SBCL).
1992 * A contributed module containing a partial implementation of the
1993 simple-streams interface has been included. (thanks to Rudi
1995 * A contributed module implementing the RFC1321 Message Digest
1996 Algorithm, known as MD5, has been included.
1997 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1998 no longer has any effect, as the code controlled by this feature
1999 has been deleted. (As far as we know, no-one has ever built using
2000 this feature, and its semantics were confused in any case).
2001 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2002 work on conditions (as required by the ANSI specification),
2003 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2004 expected behaviour on conditions. Users should note, however,
2005 that such behaviour is not required by the ANSI specification,
2006 and so use of this behaviour may render their code unportable.
2007 * fixed some bugs revealed by Paul Dietz' test suite:
2008 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2010 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2011 ** SXHASH on condition objects no longer returns NIL.
2012 ** :ALLOCATION :CLASS slots are better treated; their values are
2013 updated on class redefinition, and initforms inherited from
2014 superclasses are applied.
2015 ** REMOVE-METHOD returns its generic function argument even when
2016 no method was removed.
2017 ** SHARED-INITIALIZE now initializes the values of the requested
2018 slots, including those with :ALLOCATION :CLASS.
2019 ** ALLOCATE-INSTANCE now works on structure classes defined via
2020 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2022 ** SLOT-EXISTS-P now works on conditions, as well as structures
2024 ** MAKE-LOAD-FORM now has the required methods on
2025 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2026 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2027 keyword, and now implements the SLOT-NAMES argument.
2028 ** methods with &OPTIONAL arguments no longer allow too many
2029 arguments to be passed in the call without error.
2030 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2031 option is consistent with the required arguments of the generic
2032 function lambda list.
2033 * bug fix: REQUIRE accepts a string designator. (Thanks to
2035 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2036 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2037 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2038 * bug fix: The compiler now checks for duplicated variables in macro
2040 * bug fix: SETQ on globals returns the correct value.
2041 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2042 not a COMPILER-ERROR (followed by some other strange error on
2043 choosing the CONTINUE restart).
2044 * bug fix: make.sh and friends are now more consistent in the way that
2045 they look for GNU "make".
2047 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2048 * experimental native threads support (on x86 Linux >=2.4 only).
2049 This is not compiled in by default: you need to add :SB-THREAD to
2050 the target features. See the "Beyond ANSI" chapter of the manual
2052 * fix for longstanding nonANSIism: The old distinction between
2053 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2054 The return value from CL:FIND-CLASS is now a CLOS class, and
2055 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2056 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2057 * An interface to the MetaObject Protocol, as described in Kiczales,
2058 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2059 MIT Press, 1991, is available from the SB-MOP package.
2060 * incompatible change: the SB-PCL package should now be considered
2061 a private implementation detail, and no longer a semi-private MOP
2063 * minor incompatible change: due to rearrangement for threads, the
2064 control stack and binding stack are now allocated at arbitrary
2065 addresses instead of being hardcoded per-port. Users affected by
2066 this probably have to be doing advanced things with shared
2067 libraries, and will know who they are.
2068 * minor incompatible change: Previously, all --eval forms used were
2069 processed with READ before any of them were processed with EVAL.
2070 Now each --eval form is processed with both READ and EVAL before
2071 the next --eval form is processed. (Thus package operations like
2072 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2073 work as the user might reasonably expect.)
2074 * minor incompatible change: *STANDARD-INPUT* is now only an
2075 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2077 * minor incompatible change: Y-OR-N-P is now character-oriented,
2078 not line oriented. Also, YES-OR-NO-P now works without errors.
2079 (thanks to Antonio Martinez)
2080 * sb-aclrepl module improvements: an integrated inspector, added
2081 repl features, and a bug fix to :trace command.
2082 * Known functions, which cannot be open coded by the backend, are
2083 considered to be able to check types of their arguments. (fixing
2084 a bug report by Nathan J. Froyd)
2085 * fixed a bug in computing method discriminating functions: It is
2086 now possible to define methods specialized on classes which have
2087 forward-referenced superclasses. (thanks to Gerd Moellmann)
2088 * fixed evaluation order in optional entries (reported by Gilbert
2090 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2091 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2092 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2093 required-by-AMOP NAME argument, as well as CLASS and
2094 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2095 * fixed bug 20: DEFMETHOD can define methods using names that are
2096 not the proper names of classes to designate class specializers.
2097 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2098 Unix file descriptors, instead of blowing up. (thanks to Antonio
2100 * Garbage collection refactoring: user-visible change is that a
2101 call to the GC function during WITHOUT-GCING will not do garbage
2102 collection until the end of the WITHOUT-GCING. If you were doing
2103 this you were probably losing anyway.
2104 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2105 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2106 TYPEP the latter but not the former.
2107 * The compiler issues a full WARNING for calls to undefined functions
2108 with names from the CL package.
2109 * MAP-INTO for a vector destination is open coded. (reported by
2110 Brian Downing on c.l.l)
2111 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2112 documentation string.
2113 * fixed some bugs revealed by Paul Dietz' test suite:
2114 ** COPY-ALIST now signals an error if its argument is a dotted
2116 ** Condition slots are now accessed more correctly in the presence
2117 of multiple initargs for a given slot.
2118 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2119 exclude restarts of the same name associated with a different
2121 ** DEFCLASS of forward-referenced classes with another
2122 forward-referenced class in the superclasses list no longer
2124 ** Condition slots are now initialized once each, not multiple
2125 times. (thanks to Gerd Moellmann)
2126 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2128 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2129 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2130 arguments contain duplicated elements.
2131 ** RESTART-CASE understands local macros.
2132 ** RESTART-CASE associates exactly its own restarts with a condition.
2133 ** ENDP in safe mode checks its argument to be of type LIST.
2134 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2135 in question is unbound.
2136 ** Optimized MAKE-INSTANCE functions no longer cause internal
2137 assertion failures in the presence of duplicate initargs.
2138 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2139 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2140 propagated even in the ctor optimized implementation of
2142 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2144 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2145 * a better implementation of SXHASH on (simple) bit vectors,
2146 measured both in execution speed and in distribution of results
2147 over the positive fixnums, has been installed. Likewise, a better
2148 implementation of EQUAL for simple bit vectors is now available.
2149 * fixed CEILING optimization for a divisor of form 2^k.
2150 * fixed bug 240 (emitting extra style warnings "using the lexical
2151 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2152 by Antonio Martinez)
2153 * fixed SXHASH, giving different results for NIL depending on type
2154 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2155 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2156 variable. (found by Rolf Wester)
2157 * SBCL does not ignore type declarations for special
2158 variables. (reported by rif on c.l.l 2003-03-05)
2159 * some bug fixes in contrib/sb-aclrepl/
2160 * fixed some bugs revealed by Paul Dietz' test suite:
2161 ** a bug in the CONS type specifier, whereby the CAR and CDR
2162 types got intertwined, has been fixed;
2163 ** the type system is now able to reason about the interaction
2164 between INTEGER and RATIO types more completely;
2165 ** APPEND, [N]REVERSE and NRECONC check that those their
2166 arguments, which must be proper lists, are really so;
2167 ** An array specialized to be unable to hold elements has been
2168 implemented, as required -- yes, really -- by ANSI;
2169 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2170 on malformed property lists;
2172 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2173 * incompatible packaging change: in line with Unix convention,
2174 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2175 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2176 * REQUIRE and PROVIDE are now optionally capable of doing something
2177 useful. See the documentation string for REQUIRE.
2178 * infrastructure for a managed SBCL contrib system: contributed
2179 modules in this release include:
2180 ** the ASDF system definition facility;
2181 ** an interface to the BSD Sockets API;
2182 ** an ACL-like convenience interface to the repl;
2183 (thanks to Kevin Rosenberg)
2184 ** an implementation of ROTATE-BYTE, with efficient implementation
2186 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2187 gives a closer approximation to the right answer than previously.
2188 (thanks to Raymond Toy)
2189 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2190 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2191 optional environment arguments, as required by ANSI.
2192 * fixed bugs in other functions taking environment objects, allowing
2193 calls with an explicit NIL environment argument to be compiled
2195 * fixed bug 228: primary return values from
2196 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2197 COMPILE or FUNCTION.
2198 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2199 :TYPE will no longer signal errors on innocuous objects.
2200 * fixed bug 231b: SETQ is better at respecting type declarations in
2201 the lexical environment.
2202 * fixed a bug in DEFCLASS: classes named by symbols with no or
2203 unprintable packages can now be defined.
2204 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2205 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2206 * fixed compiler failure related to checking types of functions.
2207 (reported by Robert E. Brown)
2208 * the compiler is now much more consistent in its error-checking
2209 treatment of bounding index arguments to sequence functions: in
2210 (SAFETY 3) code, errors will be signalled in almost all cases if
2211 invalid sequence bounding indices are passed to functions defined
2212 by ANSI to operate on sequences.
2213 * fixed a bug in the build procedure: documentation of SBCL-specific
2214 packages is now preserved and available in the final Lisp image.
2215 * lifted FDEFINITION lookup out of loops in the implementation of
2216 many list operations. (thanks to Robert E. Brown)
2217 * fixed a bug in the reader: the #n# reader macro now works for
2218 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2219 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2220 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2221 E. Brown and Tony Martinez respectively)
2222 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2223 SLOT-BOUNDP: in particular, it is now able to optimize them much
2224 better, and is now not vulnerable to having packages renamed.
2225 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2226 always called when a slot is not present in an instance. (thanks
2228 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2229 longer signal an error on unreading a character following EOF on
2230 the previous constituent stream. (thanks to Tony Martinez)
2231 * fixed some bugs revealed by Paul Dietz' test suite:
2232 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2233 not just nonnegative fixnums;
2234 ** the logical bit-array operators such as BIT-AND now accept an
2235 explicit NIL for their "opt-arg" argument (to indicate a
2236 freshly-consed result bit-array);
2237 ** ELT now signals an error on an invalid sequence index in safe
2239 ** the type system is now cleverer about negations of numeric
2240 types, and consequently understands the BIGNUM and RATIO types
2242 ** the type system is now cleverer about the interaction between
2243 INTEGER and RATIO types: while bugs still remain, many more
2244 cases are accurately computed;
2245 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2246 if it is in the last clause;
2247 ** CONSTANTLY now correctly returns a side-effect-free function in
2249 ** DECLARE is no longer treated as a special-operator; in
2250 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2251 * incremented fasl file version number due to the change in the
2252 DEFSTRUCT-SLOT-DESCRIPTION structure.
2254 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2255 * minor incompatible change: code processed by the "interpreter" or
2256 EVAL now has a compilation optimization policy of (DEBUG 2)
2257 (changed from (DEBUG 1)) to improve debuggability of interactive
2258 development, and to allow the use of the debug RETURN command in
2260 * an experimental implementation of the RETURN command for the
2261 debugger has been included. (thanks to Frederik Kuivinen)
2262 * fixed bug 62: constraints were not propagated into a loop.
2263 * fixed bug in embedded calls of SORT (reported and investigated by
2265 * fixed some bugs revealed by Paul Dietz' test suite:
2266 ** printing and reading of arrays with some dimensions having
2267 length 0 (thanks to Gerd Moellmann);
2268 ** BOA constructor with &AUX argument without a default value does
2269 not cause a type error;
2270 ** CONSTANTP now returns true for all self-evaluating objects.
2272 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2273 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2274 accessors that are related by inheritance, as specified in the
2275 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2276 Valtteri Vuorikoski)
2277 * The compiler is now able to inline functions that were defined in
2278 a complex lexical environment (e.g. inside a MACROLET).
2279 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2281 * Support for the upcoming FreeBSD-5.0 release has been included.
2282 (thanks to Dag-Erling Smorgrav)
2283 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2284 effect when it is not in a toplevel context.
2285 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2286 stand a better chance of being correct. (thanks to Gerd
2288 * fixed bug in COERCE, which now signals an error on coercing a
2289 rational to a bounded real type which excludes the expected
2291 * The compiler is now able to derive types more accurately from the
2292 COERCE and COMPILE functions.
2293 * fixed bug 223: functional binding is considered to be constant
2294 only for symbols in the CL package.
2295 * fixed bug 231: SETQ did not check the type of a variable being set
2296 (reported by Robert E. Brown)
2297 * A new optimization for MAKE-INSTANCE has been included, fixing
2298 various bugs (including relating to :ALLOCATION :CLASS slots and
2299 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2301 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2302 ** As required by ANSI, LOOP now disallows anonymous collection
2303 clauses such as COLLECT I in conjunction with aggregate boolean
2304 clauses such as THEREIS (= I 1);
2305 ** LOOP now signals an error when any variable is reused in the
2306 same loop (including the potentially useful construct analogous
2307 to WITH A = 1 WITH A = (1+ A);
2308 ** IT is only a special loop symbol within the first clause of a
2309 conditional loop clause;
2310 ** LOOP with a typed iteration variable over a hashtable now
2311 signals a type error iff it should.
2312 * fixed some other bugs revealed by Paul Dietz' test suite:
2313 ** FILE-STREAM now names the class previously known as FD-STREAM;
2314 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2315 argument) no longer signals an error;
2316 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2317 of the slot symbol, rather than using the current package
2318 ((:CONC-NAME "") continues to intern the slot's name in the
2320 * incremented fasl file version number, because of the incompatible
2321 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2322 of the new implementation of DEFINE-COMPILER-MACRO.
2324 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2325 * Support for building SBCL for MIPS platforms running in
2326 little-endian mode has now been checked in, and basic
2327 functionality on said platforms verified.
2328 * minor incompatible change: PCL now records the pathname of a file
2329 in which methods and the like are defined, rather than its
2331 * minor incompatible change: TRUENAME now considers the truename of
2332 a file naming a directory to be the pathname with :DIRECTORY
2333 component indicating that directory.
2334 * minor incompatible change: a NAMED clause in the extended form of
2335 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2336 reason for the previous behaviour is unclear.
2337 * more systematization and improvement of CLOS and MOP conformance
2338 in PCL (thanks to Gerd Moellman and Pierre Mai):
2339 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2341 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2342 primary methods with no specializers;
2343 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2345 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2346 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2347 FORWARD-REFERENCED-CLASSes; error reporting on
2348 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2350 ** SXHASH on CLOS instances now uses a slot internal to the
2351 instance to return different numbers on distinct instances,
2352 while preserving the same return value through invocations of
2354 ** DEFMETHOD signals errors when methods with longer incongruent
2355 lambda lists are added to generic functions;
2356 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2357 CLASS, as specified in AMOP;
2358 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2359 on the order returned by the primary method for classes of
2360 class STANDARD-CLASS;
2361 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2362 * fixed some bugs shown by Paul Dietz' test suite:
2363 ** DOLIST puts its body in TAGBODY;
2364 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2366 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2367 value producing form;
2368 ** if more variables are given to PROGV than values, extra
2369 variables are bound and made to have no value;
2370 ** NSUBSTITUTE on list arguments gets the right answer with
2372 ** ELT signals an error of type TYPE-ERROR when the index argument
2373 is not a valid sequence index;
2374 ** LOOP signals (at macroexpansion time) an error of type
2375 PROGRAM-ERROR when duplicate variable names are found;
2376 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2377 ** FUNCALL of special-operators now cause an error of type
2379 ** PSETQ now works as required in the presence of side-effecting
2380 symbol-macro places;
2381 ** NCONC accepts any object as its last argument;
2382 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2384 ** loop-for-as-package does not require a package to be explicitely
2386 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2388 * fixed bug 166: compiler preserves "there is a way to go"
2389 invariant when deleting code.
2390 * fixed bug 172: macro lambda lists with required arguments after
2391 &REST arguments now cause an error to be signalled. (thanks to
2393 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2394 bug. (thanks to Matthew Danish)
2395 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2397 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2398 arguments are lexically rebound. (thanks to Gerd Moellmann and
2400 * fixed bug 194: error messages are now more informative when there
2401 is no primary method applicable in a call to a generic
2402 function. (thanks to Gerd Moellmann)
2403 * fixed bug in command line argument checking (thanks to Julian
2405 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2406 (thanks to Matthew Danish)
2407 * incremented fasl file version number, because of the
2408 SXHASH-related changes in the layout of CLOS data structures
2410 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2411 * minor incompatible change: The runtime (the Unix executable named
2412 "sbcl") is now much pickier about the .core files it will load.
2413 Essentially it now requires .core files to descend from the same
2414 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2415 as the runtime does. (The intent is to prevent the crashes which
2416 can occur, and which can even be reported as mysterious failures,
2417 when people patch the sources or change the build parameters
2418 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2419 sbcl and .core files.)
2420 * fixed bug: VALUES-LIST is no longer optimized away.
2421 * fixed bug 142: The FFI conversion of C string values to Lisp
2422 string values no longer conses excessively. (thanks to Nathan
2423 Froyd porting Raymond Toy's fix to CMU CL)
2424 * began to systematize and improve MOP conformance in PCL (thanks to
2425 Nathan Froyd, Gerd Moellman and Pierre Mai):
2426 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2428 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2429 ** FINALIZE-INHERITANCE is now called on class finalization;
2430 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2431 argument precedence order.
2432 * fixed bug 202: The compiler no longer fails on functions whose
2433 derived types contradict their declared type.
2434 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2435 so it can be non-toplevel.
2436 * The fasl file version number has changed (because of the new
2437 implementation of DEFMACRO).
2438 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2439 safe code, that any length requirement by their type-specifier
2440 argument is valid. The exceptions to this are described in bug
2442 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2443 functions now check the types of their inputs as required by ANSI.
2444 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2445 introduced symbol is DECLAREd to be SPECIAL.
2446 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2447 * fixed bug: :COUNT argument to sequence functions may be negative
2448 * fixed bug: body of DO-SYMBOLS may contain declarations
2449 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2450 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2451 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2452 symbol macro only once
2453 * fixed printing of call frame when argument list is unavailable
2454 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2455 * compiler no longer signals WARNING on unknown keyword
2458 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2459 * A beta-quality port to the mips architecture running Linux,
2460 based on the old CMUCL backend, has been made. It has been tested
2461 on a big-endian kernel, and works sufficiently well to be able to
2462 rebuild itself; it has not been tested in little-endian mode.
2463 * fixed an inconsistency between gencgc.c and purify.c which made
2464 dumping/loading .core files unreliable
2465 * fixed bug 120a: The compiler now deals correctly with IFs where
2466 the consequent is the same as the alternative, instead of
2467 misderiving the return type. (thanks to Alexey Dejneka)
2468 * fixed bug 113: Logical pathnames are now dumpable (the logical
2469 host is resolved at load-time, throwing an error if it is not
2471 * fixed bug 174: FORMAT's error message is slightly clearer when a
2472 non-printing character is used in a format directive.
2473 * fixed several bugs in compiler checking of type declarations, i.e.
2474 violations of the Python "declarations are assertions" principle
2475 (thanks to Alexey Dejneka)
2476 * fixed several bugs in PCL's error checking (thanks to Gerd
2478 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2480 * fixed bug in compilation of functions as first class values
2481 (thanks to Antonio Martinez-Shotton)
2482 * The compiler's handling TYPE-ERRORs which it can prove will
2483 inevitably happen at runtime has been cleaned up and corrected
2484 in several ways. (thanks to Alexey Dejneka)
2485 * improved argument type checking for various basic arithmetic
2486 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2487 lavished on them in the past that they can be compiled in many
2488 ways in different special cases
2489 * fixed bug 181: compiler checks validity of user supplied type
2491 * cleaned up code flushing in optimization: Function calls which
2492 should signal errors for safety purposes (e.g. which ANSI says
2493 should signal errors when their arguments are of incorrect type)
2494 are no longer optimized away.
2495 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2496 * incremented fasl file version number, because changes in the
2497 implementation of sequence functions like COERCE caused
2498 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2499 in old inline expansions) to become undefined. (Actually these
2500 changes were later undone, so we might very well be binary
2501 compatible with 0.7.7 after all, but leaving the version number
2502 incremented seemed like the simplest and most conservative
2505 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2506 * An alpha-quality port to the parisc architecture running Linux,
2507 based on the old CMUCL backend, has been made. This, even more so
2508 than the other backends, should be considered still a work in
2509 progress; known problems include that the Linux kernel in 64-bit
2510 mode does not propagate the correct sigcontext structure to
2511 userspace, and consequently SBCL on a parisc64 kernel will not
2513 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2514 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2515 suppressed.) Also now that the compiler is looking at declarations
2516 in the environment, it checks optimization declarations as well,
2517 and suppresses inlining when (> DEBUG SPEED).
2518 * More fixes have been made to treatment of floating point exception
2519 treatment and other Unix signals. In particular, floating point
2520 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2521 * The detection and handling of control stack exhaustion (infinite
2522 or very deeply nested recursion) has changed. Stack exhaustion
2523 detection is now done by write-protecting pages at the OS level
2524 and applies at all optimization settings; when found, a
2525 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2526 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2527 be caught using IGNORE-ERRORS.
2528 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2529 correctly when transforming recursive LABELS functions to LETs.
2530 (thanks to Alexey Dejneka)
2531 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2532 that are names of constants or global variables.
2533 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2534 alien routines with docstrings.
2535 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2536 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2538 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2539 (thanks to Eric Marsden)
2540 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2541 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2542 * Bug fix: The SPARC backend can now compile functions involving
2543 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2544 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2545 to a functions expecting a PATHNAME-DESIGNATOR.
2546 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2547 lambda lists. (thanks to Alexey Dejneka)
2548 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2549 functions so that EXPORTing the name of the class doesn't cause
2550 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2551 to Antonio Martinez for reporting this)
2552 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2553 constant-folded without failing an assertion. (thanks to Einar
2554 Floystad Dorum for reporting this)
2555 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2556 types are now dealt with more correctly by the compiler.
2557 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2558 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2559 behaviour analogous to RENAME-FILE. This puts its behaviour more
2560 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2562 * The fasl file version number has changed again. (because of the
2563 bug fix involving the names of PCL MAKE-INSTANCE functions)
2565 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2566 * bug fix: Floating point exceptions are treated much more
2567 consistently on the x86/Linux and PPC/Linux platforms.
2568 * Array initialization with :INITIAL-ELEMENT is now much faster for
2569 cases when the compiler cannot open code the array creation, but
2570 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2571 array accesses have also seen a speed increase.
2572 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2573 specified. (This was at the root of some bad interactions between
2574 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2576 * bug fix: Internal error arguments for undefined functions are now
2577 computed correctly on the PPC/Linux platform.
2578 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2579 Raymond Toy's patch for CMU CL)
2580 * Support for the Solaris 9 operating environment has been included
2581 (thanks to Daniel Merritt)
2582 * A very ugly but hopefully complete draft of the missing FFI chapter
2583 of the manual has been created by reformatting the corresponding
2584 CMU CL manual chapter into (currently very ugly and incoherent)
2585 DocBook and bringing it up to date for SBCL behavior. Thus, the
2586 manual is now essentially complete, at least by my extreme
2587 once-and-only-once standards, whereby it's acceptable to refer to
2588 the doc strings of SB-EXT functions as the primary documentation.
2589 * The fasl file version number has changed again, due to cleanup of
2590 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2591 is no longer a static symbol.)
2593 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2594 * SBCL now builds with OpenMCL (version 0.12) as the
2595 cross-compilation host; also, more progress has been made toward
2596 bootstrapping under CLISP.
2597 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2599 * bug 158 fixed: The compiler can now deal with integer loop
2600 increments different from 1; fixing this turned out also to fix
2602 * bug 169 fixed: no more bogus warnings about using lexical bindings
2603 despite the presence of perfectly good SPECIAL declarations (thanks
2604 to David Lichteblau)
2605 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2606 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2607 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2609 * bug 180 fixed: Method combination specifications no longer ignore
2610 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2611 * bug fix: Structure type predicate functions now check their argument
2612 count as they should.
2613 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2614 correctly. (thanks to Pierre Mai)
2615 * minor incompatible change: The --noprogrammer option is deprecated
2616 in favor of the new --disable-debugger option, which is very similar.
2617 (The major difference is that it takes effect at a slightly different
2618 time at startup, causing handling of errors in --sysinit and
2619 --userinit files will be affected differently.) The
2620 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2621 been added to allow this functionality to be controlled from ordinary
2622 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2623 maintainers, who might want to run non-interactive scripts to
2624 build SBCL cores which will later be used interactively.)
2625 * minor incompatible change: The LOAD function no longer, when given
2626 a wild pathname to load, loads all files matching that pathname.
2627 Instead, an error of type FILE-ERROR is signalled.
2629 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2630 * bug 147 fixed: The compiler preserves its block link/count
2631 invariants more correctly now so that it doesn't crash. (thanks
2633 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2635 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2636 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2637 no-value-for-this-character as NIL (as specified by ANSI).
2638 * HOST-NAMESTRING on physical pathnames now returns a string that is
2639 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2640 (thanks to Christophe Rhodes)
2641 * The Alpha port handles icache flushing more correctly. (thanks to
2643 * More progress has been made toward bootstrapping under CLISP. (thanks
2644 to Christophe Rhodes)
2645 * The fasl file format has changed again, because dynamic loading
2646 on OpenBSD (which has non-ELF object files) motivated some cleanups
2647 in the way that foreign symbols are transformed and passed around.
2648 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2649 is no longer treated as whitespace by the reader, but instead as
2650 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2651 |A
\7fB|, instead of A as it used to.
2653 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2654 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2655 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2656 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2657 this as of 0.7.1.45, but was left out of the previous news section
2658 (thanks to Dan Barlow)
2659 * SBCL now runs on the Solaris operating system on SPARC architectures
2660 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2661 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2662 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2663 * SPARC backend cleanups, allowing builds of cores optimized for V8
2664 and V9 SPARCS, and also emission of code targeted to a particular
2665 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2667 * SBCL is closer to bootstrapping under CLISP, thanks to various
2668 fixes by Christophe Rhodes.
2669 * The fasl file format has changed again, to allow the compiler's
2670 INFO database to support symbol macros.
2671 * The user manual (in doc/) is formatted into HTML more nicely.
2672 (thanks to coreythomas)
2673 * The system is smarter about SUBTYPEP relationships, especially
2674 those involving NOT types (including types such as ATOM which are
2675 represented internally using NOT types). Thus SUBTYPEP is less
2676 likely to return (VALUES NIL NIL) in general, and in particular
2677 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2679 * The fasl file format has changed again, because the internal
2680 representation of types now includes a new slot to support the new
2681 SUBTYPEP-of-NOT-types logic.
2682 * (not a change in the main branch of SBCL, but a related prototype
2683 which can hopefully be merged into the main branch of SBCL in the
2684 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2685 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2686 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2687 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2688 dispatch macro character combinations. (thanks to Alexey Dejneka)
2689 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2690 that superficially look like logical namestrings correctly.
2691 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2693 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2694 default supplied-p) for &optional and &key arguments. (thanks to
2697 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2698 * incompatible change: The compiler is now less aggressive about
2699 tail call optimization, doing it only when (> SPACE DEBUG) or
2700 (> SPEED DEBUG). (This is an incompatible change because there are
2701 programs which relied on the old CMU-CL-style behavior to optimize
2702 away their unbounded recursion which will now die of stack overflow.)
2703 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2704 for non-GENCGC systems has been increased to 20M (since that
2705 seems much closer to the likely performance optimum for modern
2706 systems than the old 4M value was)
2707 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2708 and *DEBUG-PRINT-LEVEL*
2709 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2710 of CMU CL's support for SPARC, and various endianness and other
2711 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2712 * new syntactic sugar for the Unix command line: --load foo.bar is now
2713 an alternate notation for --eval '(load "foo.bar")'.
2715 ** The system now detects stack overflow and handles it gracefully,
2716 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2717 optimization settings. (This is a good thing in general, and
2718 its introduction in this version should be particularly timely
2719 for anyone whose code fails because of suppression of tail
2721 ** The system now hunts for the C variable "environ" in a more
2722 devious way, to avoid segfaults when the C library version differs
2723 between compile time and run time. (thanks to Christophe Rhodes)
2724 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2725 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2726 ** The compiler no longer issues bogus style warnings for undefined
2727 classes in the same source file as the DEFCLASSes which defined
2728 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2730 ** fixes in CONDITION class precedence list for undefined function
2731 errors (thanks to Alexei Dejneka)
2732 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2733 correctly. (thanks to Dan Barlow)
2734 ** portability fixes aiming at bootstrapping under CLISP (thanks
2735 to Dave McDonald and Christophe Rhodes)
2736 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2737 ** fixes in type translation and and type inference (thanks to
2739 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2740 ** various fixes in the new ports (thanks to Dan Barlow)
2741 * several changes related to debugging:
2742 ** suppression of tail recursion, as noted above
2743 ** stack overflow detection, as noted above
2744 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2745 is now the default. (For some time encapsulation has been more
2746 reliable than the breakpoint-based :ENCAPSULATE NIL
2747 implementation, at least on X86 systems; and I just noticed that
2748 encapsulation also seems closer to the spirit of the ANSI
2751 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2753 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2754 up properly again. (There was a packaging bug in 0.7.0 which
2755 left their definitions in SB-SYS::LOAD-FOREIGN and
2756 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2757 vital for most things which interface to C-level interfaces,
2758 like extensions working with sockets or databases or
2759 Perl-compatible regexes or whatever, and the need to fix
2760 this bug is the main reason that 0.7.1 was released so
2762 ** DEFGENERIC is now choosier about the methods it redefines, so that
2763 reLOADing a previously-LOADed file containing DEFGENERICs does
2764 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2765 cycle now works as it should. (thanks to Alexey Dejneka)
2766 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2767 fixed by Christophe Rhodes. (He actually submitted this patch
2768 months ago, and I delayed until after 0.7.0.)
2769 ** Bug 111 (internal compiler confusion about runtime checks on
2770 FUNCTION types) was fixed by Alexey Dejneka.
2771 * Some internal cleanups (getting rid of variables which aren't
2772 needed now that the byte interpreter is gone) caused the fasl
2773 file format number to change again.
2775 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2776 * major incompatible change: The default fasl file extension, i.e. the
2777 default extension for files produced by COMPILE-FILE, has changed
2778 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2780 ** There are many changes in the implementation of the compiler.
2781 SBCL is now essentially a compiler-only implementation of ANSI
2782 Common Lisp. EVAL still "interprets" a few special cases, but
2783 almost all the interesting cases are handled by creating
2784 a LAMBDA expression, calling COMPILE on it, then calling
2785 FUNCALL on the result.
2786 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2787 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2788 Since the code is newer, there might still be some new bugs
2789 (though not as many as before Martin Atzmueller's fixes:-). But
2790 the new code is substantially simpler and clearer, and hopefully
2791 any remaining bugs will be simpler, less fundamental, and more
2792 fixable then the bugs in the old code.
2793 ** The revised compiler is still a little unsteady on its feet.
2795 *** The debugging information it produces (particularly the names
2796 of FUNCTION objects) is sometimes much less useful than what
2797 the old compiler produced.
2798 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2799 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2800 within a MACROLET) has been temporarily weakened.
2801 ** There are new compiler optimizations for various functions:
2802 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2803 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2804 *** the math functions TRUNCATE, FLOOR, and CEILING
2805 *** the function-of-all-trades COERCE
2806 Mostly these should be transparent, but there's one
2807 potentially-annoying problem (bug 117): when the compiler
2808 inline-expands a function and does type analysis on the result,
2809 it can create control paths which have type mismatches, and
2810 when it can't prove that those control paths aren't taken,
2811 it will issue WARNINGs about the type mismatches. This is
2812 a particular problem in practice for the new sequence functions.
2813 It's not clear how this should be fixed, and for now, a
2814 workaround is given in the entry for 117 in the BUGS file.
2815 ** (Because of the interaction between the two previous items --
2816 occasional inlining problems and new inline expansions -- some
2817 of the new sequence function optimizations won't really kick in
2818 completely until debugging information, and then inlining, are
2819 straightened out in some future version.)
2820 * minor incompatible changes:
2821 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2822 DIRECTORY no longer implicitly promotes NIL slots of its
2823 pathname argument to :WILD. In particular, when you ask for the
2824 contents of a directory (which you used to be able to do without
2825 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2826 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2827 ** changes in behavior that ANSI explicitly defines to be
2828 implementation dependent:
2829 *** The new compiler-only implementation still conforms with ANSI,
2830 but acts a little different than before. Besides the obvious
2831 changes in performance tradeoffs (that the cost per form passed
2832 to EVAL has gone up, and the cost per form executed by EVAL
2833 has gone down), the behavior of the system changes a little
2834 because there are no longer any interpreted function objects.
2835 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2836 e.g. doing COMPILE on the output of interactive DEFUN is
2838 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2840 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2841 has changed from (:CL) to NIL.
2842 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2843 e.g. #\Newline and #\Tab, don't have names specified in the
2844 ANSI Common Lisp standard, is now based on their ASCII symbolic
2845 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2846 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2847 are no longer used for output.
2848 ** changes in internal implementation constants:
2849 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2850 4 million. (If your application spends a lot of time GCing and
2851 you have a lot of RAM, you might want to experiment with
2852 increasing it even more.)
2853 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2854 However, almost all old code should still continue to work without
2855 immediate update, as SB-C-CALL is now a (deprecated) nickname
2857 ** Old operator names in the style DEF-FOO are now deprecated in
2858 favor of new corresponding names DEFINE-FOO, for consistency with
2859 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2860 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2861 internal symbols, but a few supported extensions like
2862 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2863 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2864 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2865 etc. as you get deeper into recursive calls to the debugger
2866 command loop, instead of the old "5]", "5]]", "5]]]"
2867 sequence. (I was motivated to do this when squabbles between
2868 ILISP and SBCL left me very deeply nested in the debugger. In the
2869 short term, this change will probably provoke more ILISP/SBCL
2870 squabbles, but hopefully it will be an improvement in the long run.)
2871 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2872 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2873 function, since declaiming return types involving aliens is
2874 (1) annoyingly messy to do by hand and (2) vital to efficient
2875 compilation of code which calls such functions.
2876 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2877 longer reexported by the SB-EXT package. They're solely useful
2878 for alien code, so it seems more logical that you should get
2879 them from the SB-ALIEN package, not in SB-EXT.
2880 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2881 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2882 features. Instead, the code that they used to control is always
2883 built into the system.
2884 * many other bug fixes
2885 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2886 advantage of the new EVAL-WHEN stuff and to clean them up in
2887 general, and they are now more ANSI-compliant in a number of
2888 ways. Martin Atzmueller is responsible for a lot of this.
2889 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2891 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2892 *** correct ERROR type for various file operations
2893 *** some fixes for Lisp streams
2894 *** DEFMETHOD syntax checking
2895 *** changing old weird representation of debug information as
2896 strings (which, among their other deficiencies, don't transform
2897 correctly when you rename packages, and don't change their
2898 print representation when you change things like *PACKAGE*
2899 and *PRINT-LENGTH*) to symbols and lists of symbols
2900 He also made several improvements and fixed several bugs in DESCRIBE.
2901 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2903 *** misbehavior of WRITE-STRING/WRITE-LINE
2904 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2905 and several other LOOP problems as well
2906 *** DIRECTORY when similar filenames are present
2907 *** DEFGENERIC with :METHOD options
2908 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2909 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2910 *** argument ordering in FIND with :TEST option
2911 *** mishandled package designator argument in APROPOS-LIST
2912 *** various problems in the backquote readmacro
2913 *** a bug in APROPOS
2914 *** probably some others that I'm not describing very well here,
2915 since the CVS log documents them by reference to sbcl-devel
2916 messages, and the SourceForge archives aren't working well.:-(
2917 ** Dan Barlow improved the Alpha port (and is making progress on the
2918 PPC port, for those of you who think different).
2919 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2920 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2921 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2922 continues to work on the SPARC port (for those of you in a position
2923 to look down upon our little PC-compatible boxes from a great height).
2924 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2925 and uses that copy, rather than the current dynamic value, when
2926 it's trying to decide whether to truncate output. Thus e.g.
2927 (let ((*print-lines* 50))
2928 (pprint-logical-block (stream nil)
2930 (let ((*print-lines* 8))
2931 (print (aref possiblybigthings i) stream)))))
2932 should now truncate the logical block only at 50 lines, instead of
2933 often truncating it at 8 lines, as it did before.
2934 * The doc/cmucl/ directory, containing old CMU CL documentation
2935 from the time of the fork, is no longer part of the base system.
2936 SourceForge has shut down its anonymous FTP service, and with it
2937 my original plan for distributing the old CMU CL documentation
2938 there. For now, if you need these files you can download an old
2939 SBCL source release and extract them from it.
2940 * The fasl file version number changed again, for dozens of reasons,
2941 some of which are apparent above.
2943 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2944 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2945 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2946 patch, so that DISASSEMBLE output is much nicer.
2947 * The code in the SB-PROFILE package now seems reasonably stable.
2948 I still haven't decided what the final interface should look like
2949 (I'd like PROFILE to interact cleanly with TRACE, since both
2950 facilities use function encapsulation) but if you have a need
2951 for profiling now, you can probably use it successfully with
2952 the current CMU-CL-style interface.
2953 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2954 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2955 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2956 link now returns the dangling link itself, and for similar
2957 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2958 link itself. (In these cases the old code signalled an error and
2959 looped endlessly, respectively.) Thus, DIRECTORY now works even
2960 in the presence of dangling and cyclic symbolic links.
2961 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2962 is now a supported extension again, since the consensus on
2963 sbcl-devel was that it can be useful for ordinary development
2964 work, not just for debugging SBCL itself.
2965 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2966 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2967 that currently-defined functions might be redefined later with
2968 different return types.
2969 * Hash tables can be printed readably, as inspired by CMU CL code
2970 of Eric Marsden and SBCL code of Martin Atzmueller.
2971 * better error handling in CLOS method combination, thanks to
2972 Martin Atzmueller porting Pierre Mai's CMU CL patches
2973 * more overflow fixes for >16Mbyte I/O buffers
2974 * A bug in READ has been fixed, so that now a single Ctrl-D
2975 character suffices to cause end-of-file on character streams.
2976 In particular, now you only need one Ctrl-D at the command
2977 line (not two) to exit SBCL.
2978 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2980 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2981 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2982 does the right thing.
2983 * The implementation of some type tests, especially for CONDITION
2984 types, is now tidier and maybe faster, due to CMU CL code
2985 originally by Douglas Crosher, ported by Martin Atzmueller.
2986 * Some math functions have been fixed, and there are new
2987 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2988 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2989 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2990 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2991 likely to be built into sbcl-0.7.0.)
2992 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2993 CL, ported to SBCL by Martin Atzmueller)
2994 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2995 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2996 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2997 * There's a new slam.sh hack to shorten the edit/compile/debug
2998 cycle for low-level changes to SBCL itself, and a new
2999 :SB-AFTER-XC-CORE target feature to control the generation of
3000 the after-xc.core file needed by slam.sh.
3001 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3002 COMPILE-FILE is no longer supported, so that now every function
3003 gets an entry point, so that block compilation looks a little
3004 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3005 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3006 returns the number of bytes consed since the system started,
3007 rather than the number consed since the first time the function
3008 was called. (The new definition parallels ANSI functions like
3009 CL:GET-INTERNAL-RUN-TIME.)
3010 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3011 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3012 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3013 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3014 * Fasl file version numbers are now independent of the target CPU,
3015 since historically most system changes which required version
3016 number changes have affected all CPUs equally. Similarly,
3017 the byte fasl file version is now equal to the ordinary
3020 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3021 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3022 is no longer recognized. I apologize for this, because it was
3023 listed in SB-EXT as a supported extension, but I found that
3024 its existing behavior was poorly specified, as well as incorrectly
3025 specified, and it looked like too much of a mess to straighten it
3026 out. I have enough on my hands trying to get ANSI stuff to work..
3027 * many patches ported from CMU CL by Martin Atzmueller, with
3028 half a dozen bug fixes in pretty-printing and the debugger, and
3029 half a dozen others elsewhere
3030 * fixed bug 13: Floating point infinities are now supported again.
3031 They might still be a little bit flaky, but thanks to bug reports
3032 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3033 as flaky as they were.
3034 * The --noprogrammer command line option is now supported. (Its
3035 behavior is slightly different in detail from what the old man
3036 page claimed it would do, but it's still appropriate under the
3037 same circumstances that the man page talks about.)
3038 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3039 are now supported, and enabled by default. Thus, the compiler can
3040 handle many floating point and complex operations much less
3041 inefficiently. (Thus e.g. you can implement a complex FFT
3043 * The compiler now detects type mismatches between DECLAIM FTYPE
3044 and DEFUN better, and implements CHECK-TYPE more correctly, and
3045 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3046 thanks to patches from Martin Atzmueller.
3047 * various fixes to make the cross-compiler more portable to
3048 ANSI-conforming-but-different cross-compilation hosts (notably
3049 Lispworks for Windows, following bug reports from Arthur Lemmens)
3050 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3051 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3052 fixed thanks to Pierre Mai's CMU CL patches.
3053 * fixes to keep the system from overflowing internal counters when
3054 it tries to use i/o buffers larger than 16M bytes
3055 * fixed bug 45a: Various internal functions required to support
3056 complex special functions have been merged from CMU CL sources.
3057 (When I was first setting up SBCL, I misunderstood a compile-time
3058 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3059 * improved support for type intersection and union, fixing bug 12
3060 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3061 more obscure bugs as well
3062 * some steps toward byte-compiling non-performance-critical
3063 parts of the system, courtesy of patches from Martin Atzmueller
3064 * Christophe Rhodes has made some debian packages of sbcl at
3065 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3066 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3067 stable, but are nonetheless usable. When he's ready, I'd be happy
3068 to add them to the SourceForge "File Releases" section. (And if
3069 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3070 * new fasl file format version number (because of changes in
3071 internal representation of (OR ..) types to accommodate the new
3072 support for (AND ..) types, among other things)
3074 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3075 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3077 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3079 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3080 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3081 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3082 * DESCRIBE now works on structure objects again.
3083 * Most function call argument type mismatches are now handled as
3084 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3085 know whether the function will be redefined before the call is
3086 executed. (The compiler could flag local calls with full WARNINGs,
3087 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3088 it doesn't keep track of enough information to know whether calls
3089 are local in this sense.)
3090 * Compiler output is now more verbose, with messages truncated
3091 later than before. (There should be some supported way for users
3092 to override the default verbosity, but I haven't decided how to
3093 provide it yet, so this behavior is still controlled by the internal
3094 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3095 src/compiler/ir1util.lisp.)
3096 * Fasl file format version numbers have increased again, because
3097 support for the Gray streams extension changes the layout of the
3098 system's STREAM objects.
3099 * The Gray subclassable streams extension now works, thanks to a
3100 patch from Martin Atzmueller.
3101 * The full LOAD-FOREIGN extension (not just the primitive
3102 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3103 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3104 but like most other programs, it defaults to copying the Unix
3105 environment from the original process instead of starting the
3106 new process in an empty environment.
3107 * Extensions which manipulate the Unix environment now support
3108 an :ENVIRONMENT keyword option which doesn't smash case or
3109 do other bad things. The CMU-CL-style :ENV option is retained
3110 for porting convenience.
3111 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3112 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3114 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3116 * A patch from Martin Atzmueller seems to have solved the SIGINT
3117 problem, and as far as we know, signal-handling now works cleanly.
3118 (If you find any new bugs, please report them!)
3119 * The system no longer defaults Lisp source file names to types
3120 ".l", ".cl", or ".lsp", but only to ".lisp".
3121 * The compiler no longer uses special default file extensions for
3122 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3123 seems to expect a single default extension for all compiled code,
3124 and there's no compelling reason to try to stretch the standard
3125 to allow two different extensions.) Instead, byte-compiled files
3126 default to the same extension as native-compiled files.
3127 * Fasl file format version numbers have increased again, because
3128 a rearrangement of internal implementation packages made some
3129 dumped symbols in old fasl files unreadable in new cores.
3130 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3131 many fewer weird special cases.
3132 * Bug #17 (differing COMPILE-FILE behavior between logical and
3133 physical pathnames) has been fixed, and some related misbehavior too,
3134 thanks to a patch from Martin Atzmueller.
3135 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3136 by Tim Moore, ported to SBCL by Martin Atzmueller.
3137 * Martin Atzmueller fixed several filesystem-related problems,
3138 including bug #36, in part by porting CMU CL patches, which were
3139 written in part by Paul Werkowski.
3140 * More compiler warnings in src/runtime/ are gone, thanks to
3141 more patches from Martin Atzmueller.
3142 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3145 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3147 * DESCRIBE now works on CONDITION objects.
3148 * The debugger now handles errors which arise when trying to print
3149 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3151 * The build system now uses an additional file, customize-target-features.lisp,
3152 to allow local modifications to the target *FEATURES* list. (The point of
3153 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3154 debugging features enabled, without having to worry about propagating it
3155 into everyone's system when I do a "cvs update".) When no
3156 customize-target-features.lisp file exists, the target *FEATURES* list
3157 should be constructed the same way as before.
3158 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3159 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3160 warn about behavior which is undefined under the ANSI spec. Note: This
3161 is specified by ANSI, but it's not very popular with programmers.
3162 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3163 macro in the SBCL sources for an example of a workaround which you
3164 might use to make portable ANSI-standard code which does what you want.
3165 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3166 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3167 when it's used as a non-toplevel form. (This is required in order
3168 to implement the DEFCONSTANT-EQX macro.)
3169 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3170 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3171 funny things, due to bugs in the implementation of EVAL-WHEN
3172 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3173 non-toplevel DEFCONSTANTs are uncommon.)
3174 * The core file version number and fasl file version number have been
3175 incremented, because the old noncompliant DEFCONSTANT behavior involved
3176 calling functions which no longer exist, and because I also took the
3177 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3178 * fixed bug 1 (error handling before read-eval-print loop starts), and
3179 redid debugger restarts and related debugger commands somewhat while
3181 ** The QUIT debugger command is gone, since it did something
3182 rather different than the SB-EXT:QUIT command, and since it never
3183 worked properly outside the main toplevel read/eval/print loop.
3184 Invoking the new TOPLEVEL restart provides the same functionality.
3185 ** The GO debugger command is also gone, since you can just invoke
3186 the CONTINUE restart directly instead.
3187 ** The TOP debugger command is also gone, since it's redundant with the
3188 FRAME 0 command, and since it interfered with abbreviations for the
3190 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3192 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3193 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3194 some porting work by Martin Atzmueller)
3195 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3196 with a boatload of patches which he ported to SBCL. Now that those
3198 ** The system tries to make sure that its low-priority messages
3199 are prefixed by semicolons, to help people who like to use
3200 syntax highlighting in their ILISP buffer. (This patch
3201 was originally due to Raymond Toy.)
3202 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3203 patches originally written by Raymond Toy.
3204 ** The compiler understands coercion between single-value and
3205 multiple-VALUES type expressions better, getting rid of some very
3206 weird behavior, thanks to patches originally by Robert MacLachlan
3207 and Douglas Crosher.
3208 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3209 lambda lists, thanks to a patch originally by Pierre Mai.
3210 ** The system no longer bogusly warns about "abbreviated type
3212 ** The compiler gets less confused by inlining and RETURN-FROM,
3213 thanks to some patches originally by Tim Moore.
3214 ** The system no longer hangs when dumping circular lists to fasl
3215 files, thanks to a patch originally from Douglas Crosher.
3216 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3217 undefined function error.
3218 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3219 in structure slot initforms) for now, documented workaround instead:-|
3220 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3221 * fixed bug 5: added stubs for various Gray stream functions called
3222 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3223 installed, at least appropriate type errors are generated
3224 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3225 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3226 consistently in DEFMETHOD forms.
3227 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3228 it doesn't seem to affect SBCL after all
3229 * The C runtime system now builds with better optimization and many
3230 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3232 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3234 * The system is now under CVS at SourceForge (instead of the
3235 CVS repository on my home machine).
3236 * The new signal handling code has been tweaked to treat register
3237 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3238 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3239 downstream, e.g. in debug-int.lisp, has implicit dependencies
3240 on the unsignedness of integer representation of machine words,
3241 and that caused the system to bomb out with infinite regress
3242 when trying to recover from type errors involving signed values,
3243 e.g. (BUTLAST '(1 2 3) -1).)
3244 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3245 (This was one of the bugs Peter Van Eynde reported back in July.)
3246 * The system now uses code inspired by Colin Walters' O(N)
3247 implementation of MAP (from the cmucl-imp@cons.org mailing
3248 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3249 inline the MAP operation, and there is more than one
3250 sequence argument to the MAP call (so that it can't just
3251 do ETYPECASE once and for all based on the type of the
3252 single sequence argument). (The old non-inline implementation
3253 of the general M-argument sequence-of-length-N case required
3254 O(M*N*N) time when any of the sequence arguments were LISTs.)
3255 * The QUIT :UNIX-CODE keyword argument has been renamed to
3256 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3257 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3259 * Raymond Wiker's patches to port dynamic loading from Linux to
3260 FreeBSD have been added.
3261 * The BUGS file is now more nearly up to date, thanks in large part
3262 to Martin Atzmueller's review of it.
3263 * The debugger now flushes standard output streams before it begins
3264 its output ("debugger invoked" and so forth).
3265 * The core version number and fasl file version number have both
3266 been incremented, because of incompatible changes in the layout
3268 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3269 used to not be called for a saved Lisp image.)
3270 * Martin Atzmueller's version of a patch to fix a compiler crash,
3271 as posted on sbcl-devel 13 September 2000, has been installed.
3272 * Instead of installing Martin Atzmueller's patch for the
3273 compiler transform for SUBSEQ, I deleted the compiler transform,
3274 and transforms for some similar consing operations.
3275 * A bug in signal handling which kept TRACE from working on OpenBSD
3277 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3278 away by constant folding
3279 * The system now defines its address space constants in one place
3280 (in the Lisp sources), and propagates them automatically elsewhere
3281 (through GENESIS and the sbcl.h file). Therefore, patching the
3282 address map is less unnecessarily tedious and error-prone. The
3283 Lisp names of address space constants have also been systematized.
3284 * CVS tags like dollar-Header-dollar have been removed from
3285 the sources, because they have never saved me trouble and
3286 they've been source of trouble working with patches and other
3287 diff-related operations.
3288 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3289 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3291 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3293 * The system has been ported to OpenBSD.
3294 * The system now compiles with a simple "sh make.sh" on the systems
3295 that it's supported on. I.e., now you no longer need to tweak
3296 text in the target-features.lisp-expr and symlinks in src/runtime/
3297 by hand, the make.sh takes care of it for you.
3298 * The system is no longer so grossly inefficient when compiling code
3299 involving vectors implemented as general (not simple) vectors (VECTOR T),
3300 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3301 which dares to use the various sequence functions on non-simple
3302 vectors, takes less of a performance hit.
3303 * There is now a primitive type predicate VECTOR-T-P
3304 to test for the (VECTOR T) type, so that e.g.
3305 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3306 can now be compiled with some semblance of efficiency. (The old code
3307 turned the type declaration into a full call to %TYPEP at runtime!)
3308 * AREF on (VECTOR T) is still not fast, since it's still compiled
3309 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3310 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3311 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3312 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3313 without making full calls to SUBTYPEP at runtime.
3314 (Some analogous efficiency issues for non-simple vectors specialized to
3315 element types other than T, or for non-simple multidimensional arrays,
3316 have not been addressed. They could almost certainly be handled the
3317 same way if anyone is motivated to do so.)
3318 * The changes in array handling break binary compatibility, so
3319 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3320 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3321 instead of (VALUES T T).
3322 * By following the instructions that Dan Barlow posted to sbcl-devel
3323 on 2 July 2000, I was able to enable primitive dynamic object
3324 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3325 functionality is not implemented (since it calls ld to resolve
3326 library references automatically, requiring RUN-PROGRAM for its
3327 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3328 try to resolve library references) is now supported.
3329 * The system now flushes the standard output streams when it terminates,
3330 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3331 them at several other probably-convenient times, e.g. in each pass of
3332 the toplevel read-eval-print loop, and after evaluating a form given
3333 as an "--eval" command-line option. (These changes were motivated by a
3334 discussion of stream flushing issues on cmucl-imp in August 2000.)
3335 * The source transform for TYPEP of array types no longer assumes
3336 that an array whose element type is a not-yet-defined type
3337 is implemented as an array of T, but instead punts, so that the
3338 type will be interpreted at runtime.
3339 * There is now some support for cross-compiling in make.sh: each of
3340 the phases of make.sh has its own script. (This should be transparent
3341 to people doing ordinary, non-cross-compile builds.)
3342 * Since my laptop doesn't have hundreds of megabytes of memory like
3343 my desktop machine, I became more motivated to do some items on
3344 my to-do list in order to reduce the size of the system a little:
3345 ** Arrange for various needed-only-at-cold-init things to be
3346 uninterned after cold init. To support this, those things have
3347 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3348 symbols with such names are now uninterned after cold init).
3349 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3350 fasl files for cold load.
3351 ** Remove the old compiler structure pooling code (which used to
3352 be conditional on the target feature :SB-ALLOC) completely.
3353 ** Redo the representation of some data in cold init to be more compact.
3354 (I also looked into supporting byte compiled code at bootstrap time,
3355 which would probably reduce the size of the system a lot, but that
3356 looked too complicated, so I punted for now.)
3357 * The maximum signal nesting depth in the src/runtime/ support code has
3358 been reduced from 4096 to 256. (I don't know any reason for the very
3359 large old value. If the new smaller value turns out to break something,
3360 I'll probably just bump it back up.)
3361 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3363 * Many, many bugs reported by Peter Van Eynde have been added to
3364 the BUGS list; some have even been fixed.
3365 * While enabling dynamic object file loading, I tried to make the
3366 code easier to understand, renaming various functions and variables
3367 with less ambiguous names, and changing some function calling
3368 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3369 * While trying to figure out how to do the OpenBSD port, I tried to
3370 clean up some of the code in src/runtime/. In particular, I dropped
3371 support for non-POSIX signal handling, added various comments,
3372 tweaked the code to reduce the number of compilation warnings, and
3373 renamed some files to increase consistency.
3374 * To support the new automatic configuration functionality in make.sh,
3375 the source file target-features.lisp-expr has been replaced with the
3376 source file base-target-features.lisp-expr and the machine-generated
3377 file local-target-features.lisp-expr.
3378 * fixed a stupid quoting error in make.sh so that using CMU CL
3379 "lisp -batch" as cross-compilation host works again
3381 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3383 * DESCRIBE no longer tries to call itself recursively to describe
3384 bound/fbound values, so that it no longer fails on symbols which are
3385 bound to themselves (like keywords, T, and NIL).
3386 * DESCRIBE now works on generic functions.
3387 * The printer now prints less-screwed-up representations of closures
3388 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3389 * A private symbol is used instead of the :EMPTY keyword previously
3390 used to mark empty slots in hash tables. Thus
3391 (DEFVAR *HT* (MAKE-HASH-TABLE))
3392 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3393 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3394 now does what ANSI says that it should. (You can still get
3395 similar noncompliant behavior if bang on the hash table
3396 implementation with all the symbols you get back from
3397 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3398 This breaks binary compatibility, since tests for equality to
3399 :EMPTY are wired into things like the macroexpansion of
3400 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3402 * There's now a minimal placeholder implementation for CL:STEP,
3403 as required by ANSI.
3404 * An obscure bug in the interaction of the normal compiler, the byte
3405 compiler, inlining, and structure predicates has been patched
3406 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3407 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3409 * Missing ordinary arguments in a macro call are now detected even
3410 when the macro lambda list contains &KEY or &REST.
3411 * The debugger no longer complains about encountering the top of the
3412 stack when you type "FRAME 0" to explicitly instruct it to go to
3413 the top of the stack. And it now prints the frame you request even
3414 if it's the current frame (instead of saying "You are here.").
3415 * As specified by ANSI, the system now always prints keywords
3416 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3418 * The default initial SIZE of HASH-TABLEs is now smaller.
3419 * Type information from CLOS class dispatch is now propagated
3420 into DEFMETHOD bodies, so that e.g.
3421 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3423 is now basically equivalent to
3424 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3425 (DECLARE (TYPE SINGLE-FLOAT X))
3427 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3428 operation, without having to do run-time type dispatch.
3429 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3430 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3431 * Since I don't seem to be making big file reorganizations very often
3432 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3433 is overflowing my ability to conveniently back them up), I've finally
3434 checked the system into CVS. (The CVS repository is on my home system,
3435 not at SourceForge -- putting it on SourceForge might come later.)
3436 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3437 high-level GC-NOTIFY-FOO functions send their output. (There's
3438 still very little control of where low-level verbose GC functions
3439 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3440 less than it used to -- the GC-NOTIFY-FOO functions are now under
3441 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3442 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3443 in only one place in the source code, and propagates it automatically
3444 everywhere that it's needed. Thus e.g. when I bump the version from
3445 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3446 * The C source files now include boilerplate legalese and documentation
3447 at the head of each file (just as the Lisp source files already did).
3448 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3449 to his page will be replaced with a link to his new CLiki service.
3451 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3453 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3454 * The build process now looks for GNU make under the default name "gmake",
3455 instead of "make" as it used to. If GNU make is not available as "gmake"
3456 on your system, you can change this default behavior by setting the
3457 GNUMAKE environment variable.
3458 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3459 can build without error under CMU CL.
3461 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3463 * There is now a partial SBCL user manual (with some new text and some
3464 text cribbed from the CMU CL manual).
3465 * The beginnings of a profiler have been added (starting with the
3466 CMU CL profiler and simplifying and cleaning up). Eventually the
3467 main interface should be through the TRACE macro, but for now,
3468 it's still accessed through vaguely CMU-CL-style functions and macros
3469 exported from the package SB-PROFILE.
3470 * Some problems left over from porting CMU CL to the new
3471 cross-compilation bootstrap process have been cleaned up:
3472 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3473 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3474 part when getting rid of the compiler *BACKEND* stuff.)
3475 ** The value of *NULL-TYPE* was screwed up, because it was
3476 being initialized before the type system knew the final
3477 definition of the 'NULL type. This screwed up several key
3478 optimizations in the compiler, causing inefficiency in all sorts
3479 of places. (I found it because I wanted to understand why
3480 GET-INTERNAL-RUN-TIME was consing.)
3481 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3482 PROCLAIM FTYPE information. Unfortunately this broke binary
3483 compatibility again, since now the forms output by DEFGENERIC
3484 to refer to functions which didn't exist in 0.6.3.
3485 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3486 can use the new (as of 0.6.3) transform for SOME into MAP into
3488 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3489 values to (INTEGER 0 1000000), so that the time code will no longer
3490 occasionally get blown up by Linux returning 1000000 microseconds
3491 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3492 its output conform to the ANSI spec. (Alas, this makes its output
3493 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3494 * A full call to MAP NIL with a single sequence argument no longer conses.
3495 * fixes to problems pointed out by Martin Atzmueller:
3496 * The manual page no longer talks about multiprocessing as though
3497 it were currently supported.
3498 * The ILISP support patches have been removed from the distribution,
3499 because as of version 5.10.1, ILISP now supports SBCL without us
3500 having to maintain patches.
3501 * added a modified version of Raymond Toy's recent CMU CL patch for
3502 EQUALP comparison of HASH-TABLE
3504 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3506 * The system still can't cross-compile itself with
3507 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3508 entails), but at least it can compile more of itself that way
3509 than it used to be able to, and various buglets which were uncovered
3510 by trying to cross-compile itself that way have now been fixed.
3511 * This release breaks binary compatibility again. This time
3512 at least I've incremented the FASL file format version to 2, so that the
3513 problem can be detected reliably instead of just causing weird errors.
3514 * various new style warnings:
3515 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3516 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3517 ** using the lexical binding of a variable named in the *FOO* style
3518 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3519 as specified by ANSI.
3520 * *RANDOM-STATE* is no longer automatically initialized from
3521 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3522 default behavior of the system is to repeat its behavior every time
3523 it's run. If you'd like to change this behavior, you can always
3524 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3525 old convention there was no comparably easy way to get the system to
3526 repeat its behavior every time it was run.
3527 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3528 FTYPE declarations has been removed, in favor of their ANSI
3529 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3530 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3531 the types of their sequence arguments can be determined at compile time.
3532 This is done through a new open code expansion for MAP which eliminates
3533 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3534 argument types can be determined at compile time.
3535 * The optimizer now transforms COERCE into an identity operation when it
3536 can prove that the coerced object is already of the correct type. (This
3537 can be a win for machine generated code, including the output of other
3538 optimization transforms, such as the MAP transform above.)
3539 * Credit information has been moved from source file headers into CREDITS.
3540 * Source file headers have been made more standard.
3541 * The CASE macro now compiles without complaining even when it has
3544 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3546 * (Note that the way that the PCL macroexpansions were rewritten
3547 to accommodate the change in DEFGENERIC below breaks binary
3548 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3549 not run under sbcl-0.6.2. Once we get out of alpha releases,
3550 i.e. hit release 1.0.0, we'll probably try to maintain binary
3551 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3552 and sbcl-1.4.4. Until then, however, it might be fairly common
3553 for maintenance releases to break binary compatibility.)
3554 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3556 * The reporting of unhandled signals has been changed to print some
3557 explanatory text as well as the report form. (Previously only
3558 the report form was printed.)
3559 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3560 it defines, so that the compiler no longer issues undefined function
3561 warnings for compiled-but-not-yet-loaded generic functions.
3562 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3563 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3564 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3565 section of the ANSI spec are supported.
3566 * The "" nickname for the "KEYWORD" package has been removed.
3567 The reader still handles symbol tokens which begin with a package marker
3568 as keywords, but it doesn't expose its mechanism for doing so in the
3569 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3570 * The system now issues STYLE-WARNINGs for contradictory TYPE
3571 proclamations. (Warnings for contradictory FTYPE proclamations would
3572 be nice too, but those can't be done usefully unless the type system
3573 is made smarter about FUNCTION types.)
3574 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3575 systematized, so that "*target-*.lisp is supposed to exist only on the
3576 target and imply that there's a related file which exists on the
3577 host, and *host-*.lisp is supposed to exist only on the host and imply
3578 that there's a related file which exists on the target. This involves a
3579 lot of renaming. Hopefully the acute confusion caused by the renaming
3580 will be justified by the reduction in chronic confusion..
3581 ** runtime-type.lisp -> early-target-type.lisp
3582 ** target-type.lisp -> late-target-type.lisp
3583 ** early-host-format.lisp -> early-format.lisp
3584 ** late-host-format.lisp -> late-format.lisp
3585 ** host-error.lisp -> misc-error.lisp
3586 ** early-error.lisp -> early-target-error.lisp
3587 ** late-error.lisp -> late-target-error.lisp
3588 ** host-defboot.lisp -> early-defboot.lisp
3589 ** code/misc.lisp -> code/target-misc.lisp
3590 ** code/host-misc.lisp -> code/misc.lisp
3591 ** code/numbers.lisp -> code/target-numbers.lisp
3592 ** code/early-numbers.lisp -> numbers.lisp
3593 ** early-host-type.lisp -> early-type.lisp
3594 ** late-host-type.lisp -> late-type.lisp
3595 ** host-typep.lisp -> typep.lisp
3596 ** load.lisp -> target-load.lisp
3597 ** host-load.lisp -> load.lisp
3598 ** host-disassem.lisp -> disassem.lisp
3599 ** host-insts.lisp -> insts.lisp
3600 ** byte-comp.lisp -> target-byte-comp.lisp
3601 ** host-byte-comp.lisp -> byte-comp.lisp
3602 ** host-signal.lisp -> signal.lisp
3603 ** host-defstruct.lisp -> defstruct.lisp
3604 ** late-target-type.lisp -> deftypes-for-target.lisp
3605 Furthermore, several other previously target-only files foo.lisp (e.g.
3606 hash-table.lisp and random.lisp) have been split into a target-and-host
3607 foo.lisp file and a target-only target-foo.lisp file, with their key type
3608 definitions in the target-and-host part, so that the cross-compiler will
3609 know more about target types.
3610 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3611 gone away. In their place are various *BACKEND-FOO* variables
3612 corresponding to the slots of the old structure.
3613 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3614 into the target SBCL has been fixed.
3615 * The chill.lisp system for loading cold code into a running SBCL
3617 * Support for the CMU CL "scavenger hook" extension has been removed.
3618 (It was undocumented and unused in the CMU CL sources that SBCL was
3619 derived from, and stale in sbcl-0.6.1.)
3620 * Various errors in the cross-compiler type system were detected
3621 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3622 (enabling various consistency checks). Many of them were fixed,
3623 but some hard problems remain, so the compiler is back to
3624 running without *TYPE-SYSTEM-INITIALIZED* for now.
3625 * As part of the cross-compiler type system cleanup, I implemented
3626 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3627 * I have started adding UNCROSS calls throughout the type system
3628 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3629 on cross-compiler input files will be able to go away, and various
3631 * CONSTANTP now returns true for quoted forms (as explicitly required
3634 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3636 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3637 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3638 (MAKE-LIST -1). In the longer term, it ought to become true
3639 that declarations are assertions even at SAFETY 1. For now, it's not
3640 quite true even at SAFETY 3, but it's at least more nearly true..
3641 (Note that this change seems to increases the size of the system by
3642 O(5%) and to decrease the speed of the compiler by 20% or more.)
3643 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3644 for the problem of printing dozens of lines of distracting information
3645 about low-level system machinery as part of the top stack frame
3646 on entry to the debugger when an undefined function was called.
3647 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3648 is not reset to COMMON-LISP-USER.
3649 * Compilation of stuff related to dyncount.lisp has been made conditional
3650 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3651 smaller. The various dyncount-related symbols have been moved into
3652 a new "SB-DYNCOUNT" package.
3653 * tty-inspect.lisp has been renamed to inspect.lisp.
3654 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3655 feature has gone away. (When we eventually port to other flavors of
3656 libc and/or Unix, we'll try to make the differences between flavors
3657 invisible at the user level.)
3658 * Various other *FEATURES* tags, and/or their associated conditionals,
3659 have been removed if obsolescent, or given better documentation, or
3660 sometimes given more-mnemonic names.
3662 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3664 * tidied up "make.sh" script
3665 * tidied up system directory structure
3666 * better "clean.sh" behavior
3667 * added doc/FOR-CMUCL-DEVELOPERS
3668 * many many small tweaks to output format, e.g. removing possibly-confusing
3669 trailing #\. character in DESCRIBE-INSTANCE
3670 * (EQUALP #\A 'A) no longer signals an error.
3671 * new hashing code, including EQUALP hashing
3672 * tidied up Lisp initialization and toplevel
3673 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3674 * command line argument processing
3675 * added POSIX-GETENV function to deal with Unix-ish environment variables
3676 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3677 terminating SBCL on EOF
3678 * non-verbose GC by default
3679 * There is no more "sbcl" shell script; the sbcl file is now the C
3680 runtime executable (just like CMU CL).
3681 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3683 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3684 symbol and package information as Lisp native symbol and package objects
3685 instead of strings naming symbols and strings naming packages. This way,
3686 whenever packages are renamed (as in warm init), debug information is
3687 transformed along with everything else.
3688 * tweaked the optimization policy declarations which control the building
3689 of SBCL itself. Now, among other things, the system no longer saves
3690 source location debugging information. (This helps two problems at once
3691 by reducing SBCL size and by keeping SBCL from trying to look for its
3692 sources -- which may not exist -- when reporting errors.)
3693 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3694 debugging and testing purposes
3695 * cleaned up printing, making the printer call PRINT-OBJECT for
3696 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3697 methods, giving nearly-ANSI behavior
3698 * converted almost all special variables to use *FOO* naming convention
3699 * deleted PARSE-TIME functionality, since it can be done portably
3700 * moved some files out of cold init into warm init
3701 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3703 * regularized formatting of source files
3704 * added an install.sh script
3705 * fixed ridiculous memory usage of cross-compiler by making
3706 compiler/alloc.lisp not try to do pooling unless it can hook
3707 itself into the GC of the cross-compilation host. Now the system
3708 builds nicely on my old laptop.
3709 * added :SB-ALLOC in target-features.lisp-expr
3710 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3711 was not implemented)
3712 * re-did condition handling and note reporting in the compiler. Notes
3713 are no longer handled by signalling conditions. Style warnings
3714 and warnings are handled more correctly and reported in such a way
3715 that it's easy to find one or the other in your output (so that you
3716 can e.g. figure out which of many problems caused COMPILE-FILE to
3718 * changed the severity of several compiler warnings from full WARNING
3719 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3720 compiler note reporting so that it doesn't use the condition system
3721 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3722 COMPILE-FILE command)
3723 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3724 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3725 no longer supported, since their implementation was deeply intertwingled
3726 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3727 * removed bogus "support" for compiler macros named (SETF FOO), and
3728 removed the compiler macro for SETF INFO (but only after making a fool
3729 of myself on the cmucl-imp mailing list by posting a bogus patch for
3730 DEFINE-COMPILER-MACRO..)
3731 * Compiled files containing forms which have side effects on the Lisp
3732 reader (such as DEFPACKAGE forms) are now handled more correctly.
3733 (Compiler queuing of top level lambdas has been suppressed by setting
3734 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3735 * deleted various currently-unused source files, e.g. gengc.lisp. They
3736 may be added back at some point e.g. when porting to other architectures,
3737 but until they are it's distracting to distribute them and to try to
3739 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3740 there were so many of them they're just distractions, and UNCROSS is
3741 known to be able to handle the current sources
3742 * moved PROFILE functionality into TRACE, so that it will be clear
3743 how the wrapping and unwrapping of functions when you profile them
3744 interacts with the wrapping and unwrapping of functions when you
3745 trace them. (Actually, the functionality isn't there yet, but at least
3746 the interface specification is there. Hopefully, the functionality will
3747 arrive with some future maintenance release.)
3748 * removed host-oops.lisp
3749 * changed signature of QUIT function to allow UNIX-CODE argument
3750 * fixed READ-SEQUENCE bug
3751 * tweaked verbose GC output so that it looks more like the progress
3752 output that ANSI specifies for functions like LOAD
3753 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3754 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob