1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3 * incompatible change: the thread-safe (on most platforms) getaddrinfo
4 and getnameinfo sockets functions are used instead of gethostbyaddr
5 and gethostbyname, on platforms where the newer functions are available.
6 As a result, the ALIASES field of HOST-ENT will always be NIL on these
8 * bug fix: >= and <= gave wrong results when used with NaNs.
9 * bug fix: the #= and ## reader macros now interact reasonably with
10 funcallable instances.
12 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
13 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
14 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
15 produce more efficient code on the x86 if the compiler can determine
16 that (+ INDEX <constant>) does not require a bounds check and FOO
17 has an element type at least 8 bits wide.
18 * bug fix: references to undefined variables are handled the same way
19 in toplevel forms as in the normal compiler
20 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
22 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
23 (thanks to Jon Buller)
24 * improvement: faster compilation times for complex functions
25 * improvement: added readlink support to SB-POSIX (thanks to Richard
28 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
29 * improvement: experimental support for mach exception handling on
30 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
32 * improvement: support for GBK external format.
33 (thanks to Chun Tian (binghe))
34 * improvement: the debugger now displays variables that have been closed
35 over, in code compiled with (DEBUG 2) or higher
36 * improvement: support for executable cores on NetBSD (thanks to
38 * new feature: added a RESTART-FRAME debugger command
39 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
40 be used to provide an implementation for FILE-POSITION on Gray streams
41 (thanks to Eric Marsden)
42 * new feature: add syslog, openlog and closelog support to SB-POSIX
43 (thanks to Richard Kreuter)
44 * optimization: the function call overhead in code compiled with
45 a high DEBUG optimization setting is significantly
46 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
47 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
48 (thanks to Tony Martinez)
49 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
50 evaluated once (reported by Kevin Reid)
51 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
52 works again (thanks to Kilian Sprotte)
53 * bug fix: an error is signaled for tagbodies with duplicate tags
54 (thanks to Stephen Wilson)
55 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
56 * bug fix: Win32 port can now handle foreign code unwinding Lisp
57 stack frames from alien callbacks.
58 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
59 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
60 65k pages (thanks to David Woodhouse)
61 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
63 changes in sbcl-1.0.1 relative to sbcl-1.0:
64 * new platform: FreeBSD/x86-64, including support for threading.
65 * new feature: the compiler stores cross-referencing information
66 abount function calls (who-calls), macroexpansion (who-macroexpands)
67 and special variables (who-binds, who-sets, who-references) for code
68 compiled with (< SPACE 3). This information is available through the
69 sb-introspect contrib.
70 * new feature: users may subclass SEQUENCE, and have instances of
71 these classes interoperate with standard Common Lisp functions if
72 a number of methods are defined. (This feature is experimental
73 and the interface subject to change based on feedback from SBCL
74 users and the general community)
75 * improvement: sb-sprof traces call stacks to an arbitrary depth on
76 x86/x86-64, rather than the previous fixed depth of 8
77 * improvement: another pthread back-end of mutex "pthread-futex".
78 * bug fix: non-ascii command-line arguments are processed correctly
79 (thanks to Yaroslav Kavenchuk)
80 * bug fix: non-required arguments were not passed correctly when a method
81 defined using DEFMETHOD was called from a mop-generated method using
82 CALL-NEXT-METHOD (reported by Pascal Costanza)
83 * bug fix: recursion is now permitted in accessors through
84 SLOT-UNBOUND. (reported by Pascal Costanza)
85 * bug fix: an error was signaled at startup if the HOME environment
86 variable was defined, but had an empty value (reported by Peter Van Eynde)
87 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
88 signal a PROGRAM-ERROR, not a BUG.
89 * bug fix: SB-POSIX:READDIR works when built with large file support.
90 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
92 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
93 for better automatic indentation support. (thanks to Matt Pillsbury)
94 * optimization: loading generic functions no longer takes O(n^2) time,
95 proportional to the amount of methods in the generic function
96 (reported by Todd Sabin and Jeremy Brown)
97 * optimization: the FIND and POSITION family of sequence functions
98 are significantly faster on arrays whose element types have been
100 * improvements to the Windows port:
101 ** Intermittent heap corruption problems have been fixed. (thanks
102 to Alastair Bridgewater)
103 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
105 ** Lisp is able to unwind foreign exception frames from alien
106 callbacks. (thanks to Alastair Bridgewater)
108 changes in sbcl-1.0 relative to sbcl-0.9.18:
109 * improvement: experimental support for threading on FreeBSD/x86.
110 (thanks to NIIMI Satoshi)
111 * improvement: runtime option --dynamic-space-size can be used
112 to set the size of the dynamic space reserved on startup.
113 * improvement: floating point modes in effect are now saved in
114 core, and restored on startup.
115 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
116 startup, not time since first call to GET-INTERNAL-REAL-TIME.
117 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
118 threads are not running after *SAVE-HOOKS* have run.
119 * improvement: writes to CLOS instance slots are type-checked in code
120 compiled with (SAFETY 3)
121 * improvement: floating-point exception handling on FreeBSD (thanks to
123 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
124 (thanks to Zach Beane)
125 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
127 * improvement: added support for the Shift-JIS external format.
128 (contributed by NIIMI Satoshi)
129 * improvement: callbacks are supported on Linux/PPC. (thanks to
131 * bug fix: compiler bug triggered by a (non-standard) VALUES
132 declaration in a LET* was fixed. (reported by Kaersten Poeck)
133 * bug fix: file compiler no longer confuses validated and already
134 dumped structurres. (reported by Kaersten Poeck)
135 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
136 fill-pointer signals a type-error as required. (thanks to
138 * bug fix: disassemly of funcallable instances works.
139 * bug fix: single stepping on PPC.
140 * bug fix: fix thread-safety problems in the type system (generally
141 manifesting as nonsensical errors like "STRING is a bad type specifier
142 for sequences" or "The value 1 is not of type FIXNUM")
143 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
144 (reported by Josip Gracin)
145 * bug fix: an error is signaled for attempts to displace arrays with
146 incompatible element types (thanks to Mario Mommer)
147 * bug fix: more correct handling of wide characters in debug info
148 (bug reported by Attila Lendvai and fixed by Juho Snellman)
149 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
150 and don't cause extra consing
151 * optimization: MAP and MAP-INTO are significantly faster on vectors
152 whose elements types have been declared.
153 * Improvements to SB-SPROF:
154 ** Support for allocation profiling
155 ** Reduced profiling overhead, especially for long profiling runs
156 * Improvements to the Windows port:
157 ** floating point exceptions are now reported correctly.
158 ** stack exhaustion detection works partially.
159 ** more accurate GET-INTERNAL-REAL-TIME.
160 ** better RUN-PROGRAM behaviour in case of errors in the child
162 ** PROBE-FILE now simplifies pathnames correctly.
163 ** DIRECTORY now works correctly with :WILD-INFERIORS.
164 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
165 1st 1970 (although time timezone data will be unreliable).
166 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
168 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
169 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
170 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
172 * bug fix: two potential GC deadlocks affecting threaded builds.
173 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
174 returns T (reported by Anton Kazennikov)
175 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
176 with non-variable places
177 * bug fix: remove a race condition in the setting of
178 funcallable-instance functions, this should make threaded CLOS
179 code more stable against memory faults.
180 * bug fix: corruption of specials when unbinding is interrupted by an
181 asynchronous unwind (reported by Hannu Koivisto)
182 * improvement: the debugger will now also display local variables that
183 are only used once, for code compiled with a DEBUG optimization quality
186 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
187 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
188 * incompatible change: External-format support for FFI calls. The
189 SB-ALIEN:C-STRING no longer implies an ASCII
190 external-format. Instead the string is subject to external-format
191 conversion. Additionally return values of type SB-ALIEN:C-STRING
192 are by default of type (SIMPLE-ARRAY CHARACTER), not
193 SIMPLE-BASE-STRING. For an alien type that behaves like the old
194 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
195 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
196 * incompatible change: SB-EXT package no longer contains the
197 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
198 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
200 * incompatible change: the single-stepper is no longer available
201 on Alpha, Mips and Sparc platforms.
202 * minor incompatible change: the direct superclasses of
203 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
204 not (STANDARD-OBJECT FUNCTION). This makes the
205 class-precedence-lists of GENERIC-FUNCTION and
206 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
208 * minor incompatible change: the default stream external format on
209 non-unicode SBCL is no longer detected from the locale, but is always
211 * new feature: Add a version of evaluator that uses an interpreter instead
212 of the compiler. EVAL still uses the compiler by default, to switch it
213 to use the interpreter, set the value of the variable
214 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
215 * minor incompatible change: the single-stepper REPL has been merged
216 with the normal debugger (see the "Stepping" heading of the debugger help
217 for more details). The debugger command STEP will no longer switch
218 to the single-stepper REPL.
219 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
220 for a type now works.
221 * bug fix: loading of default sysinit file works. (thanks to Leonid
223 * bug fix: better detection of circularities in the file-compiler.
224 (reported by Marco Monteiro)
225 * bug fix: the CL pathname functions now work with files that have
226 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
227 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
228 systems with Unix98 pty semantics.
229 * bug fix: ASDF-INSTALL will now work with bsd tar.
230 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
232 * bug fix: timers expiring in dead threads no longer cause a
233 type-error (reported by Paul "Nonny Mouse").
234 * bug fix: thanks to more lightweight single-stepper instrumentation,
235 code compiled with (DEBUG 3) will compile and execute significantly faster,
236 and will have more accurate type-inferencing than before
237 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
238 whose bindings are modified
239 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
240 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
241 ** replace dummy implementations of CL:MACHINE-INSTANCE and
242 CL:SOFTWARE-VERSION with proper version
244 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
245 * feature: implemented the READER-METHOD-CLASS and
246 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
247 as specified by AMOP.
248 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
250 * optimization: faster LOGCOUNT implementation on x86 and x86-64
251 (thanks to Lutz Euler)
252 * optimization: hashing of general arrays and vectors has been
253 improved. (reported by Any Fingerhut)
254 * enhancement: SB-INTROSPECT is now able to find definitions of
255 profiled functions. (thanks to Troels Henriksen)
256 * enhancement: compiler-macro expansion applies now to FUNCALL forms
257 as well, allowing compiler-macros for SETF-functions to expand.
258 * enhancement: step-instrumentation no longer wraps known
259 single-value functions with multiple-value context, allowing
260 better type inference.
261 * fixed bug #337: use of MAKE-METHOD in method combination now works
262 even in the presence of user-defined method classes. (reported by
263 Bruno Haible and Pascal Costanza)
264 * fixed bug #339(c): if there are applicable methods not part of any
265 long-form method-combination group, call INVALID-METHOD-ERROR.
266 (reported by Bruno Haible)
267 * fixed bug #361: the :FUNCTION initarg in the protocol for
268 initialization of methods can now be used to override
269 internally-produced optimized functions. (reported by Bruno
271 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
272 system-provided lambda expression no longer cause warnings about
273 unbound #:|pv-table| symbols.
274 * bug fix: improved the handling of type declarations and the
275 detection of violations for keyword arguments with non-constant
277 * bug fix: potentially erronous calls to PATHNAME and
278 MERGE-PATHNAMES were being flushed in some cases.
279 (reported by Richard Kreuter)
280 * bug fix: compiled calls to TYPEP were mishandling obsolete
281 instances. (reported by James Bielman and Attila Lendvai)
282 * bug fix: format strings with ~> without matching ~< no longer
283 trigger an AVER, but signal an understandable error instead.
284 (reported by Antonio Martinez)
285 * bug fix: specifying an output-file without a pathname-type for
286 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
287 of input-file instead of "fasl". (reported by Robert Dodier)
288 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
289 (reported by James Y Knight).
290 * bug fix: compiler-macros-function did not consider the environment
291 argument for shadowing by local functions.
292 * bug fix: compiler-macros expansion was inhibited by local INLINE
294 * bug fix: inline expansions of known functions were subject to
295 step-instrumentation in high debug policies, leading to problems
297 * bug fix: compiler failed to differentiate between different CONS
299 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
300 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
301 * bug fix: #368: incorrect use of expressed vs. upgraded array
303 * bug fix: #306a: more precise unions of array types.
304 * thread-safety improvements:
305 ** CONDITION-WAIT could return early on Linux, if the thread was
306 interrupted and subsequently continued with SIGCONT.
307 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
309 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
310 * added support for the ucs-2 external format. (contributed by Ivan
312 * minor incompatible change: pretty printing of objects of type
313 (cons symbol) is, in the default pprint-dispatch-table, now
314 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
316 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
317 called later in a class's lifetime, possibly as late as when the
318 first instance of the class is created. Previously,
319 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
320 class became finalizeable.
321 * fixed bug: FILE-POSITION sometimes returned inconsistent results
322 for multibyte external-format streams. (thanks to "vbzoli")
323 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
324 with :ALLOCATION :CLASS inherited from superclasses of the
326 * fixed bug: anonymous classes can now be created using the :NAME
327 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
328 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
329 * fixed bug: core-files saved with :EXECUTABLE T can again be
330 executed when SBCL_HOME isn't set. (reported by James Knight)
331 * fixed bug: toplevel LOCALLY forms with declarations could
332 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
333 * fixed bug: printing from several different threads using different
334 values of *print-case* could cause invalid output, due to
335 some internal special variables of the printer not being bound
336 thread-locally (reported by Max Mikhanosha)
337 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
338 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
339 (reported by Pascal Costanza)
340 * fixed bug: FINALIZE-INHERITANCE is called from
341 REINITIALIZE-INSTANCE on classes when the class has previously
342 been finalized, as required by AMOP.
343 * minor code generation optimizations:
344 ** better register allocation in CLOS dispatching functions
345 ** overflow detection when coercing signed bytes to fixnums on x86-64
346 ** is now implemented with one IMUL instruction instead of three shifts
347 ** more efficient bit-vector access on x86 and x86-64
348 ** more efficient access to raw structure slots on x86 and x86-64
349 * fixed some bugs revealed by Paul Dietz' test suite:
350 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
353 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
354 * feature: thread support on Solaris/x86, and experimental thread support
356 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
358 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
359 default method for SLOT-UNBOUND.
360 * minor incompatible change: prevent the user from specializing the
361 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
362 somewhat counter to the intent of the protocol, I (CSR) think, and
363 additionally it just doesn't work in SBCL as currently
364 implemented, thanks to optimizations (that are always valid for
365 the other three SLOT-VALUEish functions, but not for the setter).
366 * minor incompatible change: the :SB-LDB feature is now enabled by
367 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
368 the low-level debugger.
369 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
370 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
371 down to an SB-SYS:FD-STREAM, allowing direct communication in
372 more cases. Temporary files and pipes are still used as a fallback
374 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
375 on the non-reentrant C functions localtime(3) and gmtime(3).
376 * bug fix: global optimization policy was not visible in LOCALLY and
378 * bug fix: class objects can be used as specializers in methods.
379 (reported by Pascal Costanza)
380 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
381 with a type error. (reported by blitz_ on #lisp)
382 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
383 failed with a type error. (reported by Pascal Bourguignon)
384 * bug fix: merging pathnames against defaults with :DIRECTORY
385 starting with '(:RELATIVE :BACK) should preserve the :BACK.
386 (reported by James Y Knight)
387 * bug fix: saving large (>2GB) cores on x86-64 now works
388 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
389 constant index and a (simple-array (signed-byte 32)) array
390 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
391 error (patch by Robert J. Macomber)
392 * feature: TIME now displays the amount of run-time spent in GC
393 * bug fix: The debugger now does a better job of respecting
394 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
395 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
396 workaround for bug 403.)
397 * bug fix: floating point exception handling now works on FreeBSD
398 (thanks to NIIMI Satoshi)
399 * fixed some bugs revealed by Paul Dietz' test suite:
400 ** MISC.641: LET-conversion were not supposed to work in late
402 * improvements to the Win32/x86 port:
403 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
404 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
406 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
407 * new feature: source path information is generated for macro-expansion
408 errors for use in IDE's like Slime (thanks to Helmut Eller)
409 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
410 * bug fix: compiler does not loop forever on an invalid type in
412 * improvement: compilation of most CLOS applications is significantly
414 * optimization: added a limited bytecode compiler for simple toplevel
415 forms, speeding up compilation and FASL loading
416 * bug fix: the statistical profiler now properly distinguishes anonymous
419 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
420 * minor incompatible change: in sbcl-0.9.11 (but not earlier
421 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
422 into subclasses of the finalized class. Now user calls to
423 FINALIZE-INHERITANCE finalize just the one class, and calls by the
424 system return before any subclasses are finalized.
425 * minor incompatible change: The reader no longer ignores errors
426 regarding non-existent packages in #+ and #- feature tests.
427 * new feature: command line options --no-sysinit, --no-userinit to
428 inhibit loading the corresponding init files
429 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
430 for sending data through UDP sockets (thanks to François-René Rideau)
431 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
432 error is signalled instead (thanks to François-René Rideau)
433 * minor incompatible change: Error signalling behaviour of lexical
434 operations violating package locks has changed slightly. Refer to
435 documentation on package locks for details.
436 * enhancement: EVAL can process IF-expressions without resorting to the
438 * bug fix: Some operations involving SIN, COS, or TAN weren't being
439 constant-folded properly due to missing out-of-line functions.
440 (reported by Mika Pihlajamäki)
441 * bug fix: LISTEN sometimes returned T even in cases where no data was
442 immediately available from the stream
443 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
444 were reversed. (reported by Levente Mészáros)
445 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
446 when given a vector displaced to an adjustable array. (reported
448 * bug fix: derivation of float boundaries from numbers outside the
449 appropriate float range (reported by John Wiseman)
450 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
452 * bug fix: precomputing cache entries for generic functions with
453 some subclasses of specializers as yet invalid does not attempt to
454 fill a cache line with a negative offset. (reported by Levente
456 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
457 allow condition class objects as arguments to DOCUMENTATION and
458 (SETF DOCUMENTATION); only find and set documentation for
459 structure names for the STRUCTURE doc-type. (suggested by Gary
461 * improvements to the Win32/x86 port:
462 ** (user-homedir-pathname) and default initialization file
463 locations now know about the user's "Documents and Settings"
464 directory (thanks to Yaroslav Kavenchuk)
465 ** run-program is implemented (thanks to Mike Thomas)
466 ** sockets support (thanks to Timothy Ritchey)
467 ** better backtrace support (thanks to Alastair Bridgewater)
468 ** sb-grovel supported
469 ** asdf-install and sb-posix work somewhat
470 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
471 * improvements to the Solaris/x86 port:
472 ** works on Solaris 11/Solaris Express
473 ** floating-point exception handling support
474 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
475 * fixed some bugs revealed by Paul Dietz' test suite:
476 ** REMOVE-METHOD returns its generic function argument even when
477 the method is not one of the generic functions' methods.
478 ** objects declared as MEMBER types can be admissible arguments to
480 ** printing characters should simply be printed by the FORMAT ~:C
482 ** compiler failure when compiling functions with hairy constant
483 defaults for optional parameters.
484 ** compiler produces wrong code when MAYBE-INLINE-expanding a
485 function, which is already optimized.
487 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
488 * new platform: experimental support for SBCL x86/Darwin, including
489 MacOS X 10.4.5 on Intel.
490 * new feature: Unicode character names are now known to the system
491 (through CHAR-NAME and NAME-CHAR).
492 * new feature: the filesystem location of SBCL's core file is
493 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
494 * minor incompatible change: the contrib modules SB-POSIX and
495 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
496 this change is to make it easier to distribute
497 location-independent binaries.
498 * bug fix: as implied by AMOP, standardized classes no longer have
499 slots named by external symbols of public packages. (reported by
501 * optimization: calling functions via constant symbols -- as in
502 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
503 via the function object as in (FUNCALL #'FOO).
504 * optimization: on x86 and x86-64, the calling convention for the
505 case of dealing with an unknown number of values has been altered
506 to be friendlier to the prediction heuristics implemented,
507 particularly with reference to CALL and RET pairing. (thanks to
508 Alastair Bridgewater)
509 * optimization: on x86, the code for access to thread-local symbol
510 values and binding/unbinding of thread-local symbols is smaller.
511 (thanks to Alastair Bridgewater)
512 * enhancement: CONSTANTP is now able to determine constantness of
513 more complex forms, including calls to constant-foldable standardized
514 functions and some special forms beyond QUOTE.
515 * fixed bug: occasional GC crashes on Solaris/x86
516 * optimization: x86-64 supports stack allocation of results of simple
517 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
518 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
519 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
520 (thanks to James Knight)
521 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
522 by the standard (thanks to Stephen Compall)
524 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
525 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
526 be used for bundling the runtime and the core file into one
527 executable binary. This feature is not currently supported on all SBCL
528 platforms. (thanks to James Bielman and NIIMI Satoshi)
529 * new feature: a generational or ephemeral garbage collector is now
530 the default on the PowerPC platform (both Linux and Darwin). The
531 old Cheney (stop and copy) collector is a build-time option.
532 (thanks to Cyrus Harmon, after Raymond Toy)
533 * minor incompatible change: the method by which SBCL finds its
534 contributed modules has changed; it no longer relies on symbolic
535 links from an $SBCL_HOME/systems directory, but searches directly
536 in the subdirectories of $SBCL_HOME.
537 * enhancement: the dynamic heap size on the Linux/PPC platform is
538 markedly larger, even using the older Cheney garbage collector.
539 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
540 certain complicated string types. (reported by Gary King)
541 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
542 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
543 * fixed bug: DOCUMENTATION on structures no longer signals an
544 error if no structure type of the right name exists. (reported by
546 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
547 applicable non-standard primary or :AROUND method on
548 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
549 no longer cause unbound variable errors. (reported by Kevin Reid)
550 * fixed bug: metacircle resolution in cases where methods have slots
551 added before the slots from STANDARD-METHOD. (reported by Jean
553 * fixed bug: the Power PC assembly code for calling into lisp
554 sometimes computed its return address wrongly (depending on the
555 15th bit of the address, fixed at link time). This used to
556 manifest itself in a segmentation violation while building PCL.
557 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
558 many others over the years)
559 * fixed bug: ROOM no longer reports silly numbers for stack usage if
560 the stack pointer (treated as a signed integer) is negative.
561 (thanks to Peter van Eynde)
563 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
564 * new platform: experimental support for the Windows operating
565 system has been added. (thanks to Alastair Bridgewater)
566 * fixed several bugs in and robustified the PPC FFI (including
567 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
568 * bug fix: allow non-simple string symbol names (reported by Paul
570 * bug fix: interrupt handling on NetBSD (thanks to Richard M
572 * bug fix: saving a core corrupted callbacks on x86/x86-64
573 * bug fix: closed a loophole in metacircularity detection and
574 grounding in the PCL implementation of CLOS.
575 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
576 (reported by tomppa on #lisp)
577 * bug fix: clear the direction flag on Lisp -> C transitions, as
578 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
579 (reported by Andrej Grozin and Hendrik Maryns)
580 * optimization: major improvements to GC efficiency on GENCGC platforms
581 * optimization: faster implementation of EQUAL
582 * optimization: emit more efficient opcodes for some common
583 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
584 * optimization: several other minor code-generation improvements on x86-64
585 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
587 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
588 * minor incompatible change: (SETF CLASS-NAME) and (SETF
589 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
590 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
591 by ANSI as a generic function, and for consistency (SETF
592 GENERIC-FUNCTION-NAME) is treated likewise.
593 * fixed bug #233.b: make constraint propagation notice when a variable
594 value is changed after it is referenced but before it is used
595 * fixed bug #296: no more arbitrary behaviour from filenames with
596 odd characters as --load arguments. (reported by Adam Warner)
597 * fixed bug #390: :CHARACTER-SET pathname components now work as
598 expected. (reported by Tim Daly Jr)
599 * fixed bug #391: complicated :TYPE intersections in slot
600 definitions no longer cause an error in PCL internals.
601 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
602 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
603 returning the number of octets which would be written to the
604 file-stream. (thanks to Robert J. Macomber)
605 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
606 arguments to the internal stream functions. (thanks to David
608 * bug fix: stack exhaustion is now handled on the x86/SunOS
609 platform. (thanks to Daisuke Homma)
610 * bug fix: more accurate ROOM results on GENCGC platforms
611 * optimization: improved type inference for arithmetic-for
612 index variables in LOOP
613 * optimization: faster floating-point SQRT on x86-64
614 * fixed some bugs revealed by Paul Dietz' test suite:
615 ** DOCUMENTATION returns NIL instead of "" for method combinations
616 that don't have a docstring
618 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
619 * minor incompatible change: (SETF CLASS-NAME) and (SETF
620 GENERIC-FUNCTION-NAME) are no longer generic functions, and
621 therefore are not customizeable by user code (as seems to be at
622 least permitted and maybe required by AMOP). As a consolation,
623 however, the SBCL implementation of these functions now calls
624 REINITIALIZE-INSTANCE as specified by AMOP.
625 * bug fix: slot-definition documentation is propagated as per ANSI
626 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
627 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
628 argument, as do eslotd initialization methods. (from Pascal
629 Costanza's "Closer" project)
630 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
631 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
633 * bug fix: it is now possible to have more than one subclass of
634 STANDARD-GENERIC-FUNCTION without causing stack overflow.
635 (reported by Bruno Haible, Pascal Costanza and others)
636 * bug fix: the dependent update protocol now works for generic
637 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
639 * bug fix: condition-class instances corresponding to
640 DEFINE-CONDITION forms are now created eagerly. (reported by
641 Kalle Olavi Niemitalo on comp.lang.lisp)
642 * bug fix: floating point printing is more accurate in some
643 circumstances. (thanks to Simon Alexander)
644 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
645 merged with *DEFAULT-PATHNAME-DEFAULTS*.
646 * bug fix: callbacks on OS X now preserve stack-alignment.
647 (thanks to Cyrus Harmon)
648 * enhancement: the x86-64 disassembler is much better at
649 disassembling SSE instructions. (thanks to Lutz Euler)
650 * enhancement: CHECK-TYPE on a variable now allows type-inference
651 (thanks to Vincent Arkesteijn)
652 * optimization: improved performance of EUC-JP external format.
653 (thanks to NIIMI Satoshi)
654 * optimization: performance improvements to IO on file streams of
655 :ELEMENT-TYPE CHARACTER
656 * optimization: much faster memory allocation on x86-64
657 * optimization: faster garbage collections (latency and throughput)
659 * optimization: faster bignum subtraction and division on x86 and x86-64
660 (thanks to Lutz Euler)
661 * optimization: more accurate type-inference for loops that use a
662 floating point index variable or a negative step.
664 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
665 * bug fix: add a workaround to SBCL looping infinitely at startup on
666 Linux kernels with apparently buggy implementations of personality().
667 (thanks to Svein Ove Aas)
668 * bug fix: Unicode symbols are correctly printed in LDB backtraces
669 (thanks to David Lichteblau)
670 * bug fix: local bindings shadow global symbol macros for
671 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
672 * optimization: non-open coded uses of numeric comparison operators
673 (e.g. >) no longer cons when called with more than one parameter
674 on platforms supporting dynamic-extent allocation.
675 * enhancement: saving cores with foreign code loaded is now supported
676 on MIPS/Linux in addition to the previously supported platforms.
677 * bug fix: FIND-RESTART now tests for activity, not applicability when given
678 a restart object as identifier. (reported by Helmut Eller for CMUCL)
679 * bug fix: division by zero in sb-sprof when no samples were collected
680 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
681 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
682 (thanks to Alexander Kjeldaas)
683 * new feature: ignoring the return values of destructive functions
684 like NREVERSE signals a compile-time style-warning.
685 (thanks to Kevin Reid)
686 * new feature: the alignment of alien structure fields can be
687 explicitly specified. (thanks to Cyrus Harmon)
688 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
689 and dump core on SIGQUIT
691 ** incompatible change: threads do not inherit values of specials
692 from their parents (see manual)
693 ** bug fix: threads stacks belonging to dead threads are freed by the
694 next exiting thread, no need to gc to collect thread stacks anymore
695 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
696 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
697 ** bug fix: dynamic variable and thread start related gc lossage
698 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
700 * fixed some bugs revealed by Paul Dietz' test suite:
701 ** SUBTYPEP is slightly more accurate on heinously complicated
702 CONS types where some of the members have uncertain (in the
703 NIL, NIL sense) type relationships to each other.
705 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
706 no longer purified unless :PURIFY T is explicitly specified.
707 ** Non-purified cores are significantly smaller than before
709 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
710 * new feature: timers based on Zach Beane's excellent timer package
711 * added support for the following external formats: koi8-u,
712 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
713 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
714 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
715 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
716 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
717 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
718 * incompatible change: a threaded SBCL will no longer revert to
719 non-threaded mode on non-NPTL systems, but refuse to start entirely.
720 * bug fix: interrupts are disabled until startup is complete; no
721 more sigsegvs when receiving a signal to soon
722 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
724 * bug fix: add a workaround for the memory randomization features in
725 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
726 workaround will only be in effect on systems with the proc filesystem
728 * bug fix: printing objects of type HASH-TABLE signals a
729 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
731 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
732 have been running for over 50 days. (reported by Gilbert Baumann)
733 * bug fix: the logic for getting names of functions gets less
734 confused when confronded with alternate-metaclass
735 funcallable-instances. (reported by Cyrus Harmon)
736 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
737 consistent, even on internal alternate-metaclass objects.
738 * bug fix: flush closure information collected by physical
739 environment analysis prepass before the main pass. (bug reported
741 * bug fix: compiler pack phase does not modify a hashtable, which is
742 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
743 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
744 may be expanded. (reported by Alexander <malishev> on c.l.l)
745 * bug fix: no more style-warnings when compiling code using LAST
746 under high-SPEED low-SPACE settings. (reported by David Wallin
748 * fixed some incompatibilities between SBCL's MOP and the MOP
750 ** the METAOBJECT class is now implemented;
751 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
752 STANDARD-OBJECT, as required;
753 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
754 now compatible (as required by VALIDATE-SUPERCLASS); there
755 remains a consistency requirement over the presence or absence
756 of the FUNCTION class in the superclass list of finalized
757 classes; see the manual for more details;
758 ** the :AROUND method for COMPUTE-SLOTS on
759 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
760 requested slot ordering.
762 ** bug fix: parent thread now can be gc'ed even with a live
764 ** bug fix: binding a special with PROGV to no value is not
765 the same as that symbol not having been bound (thanks to
767 ** bug fix: binding specials is thread safe (thanks to
769 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
770 and SB-SPROF do not die with 'no handler for signal XX in
771 interrupt_handle_now(..)' anymore
772 ** bug fix: WITH-TIMEOUT works with multiple running threads
773 * fixed some bugs revealed by Paul Dietz' test suite:
774 ** ENSURE-GENERIC-FUNCTION should take a method class object for
775 the :method-class keyword argument.
777 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
778 * new port: the Solaris operating system on x86 processors is now
779 mostly supported, though some rough edges in the environment
780 remain. (thanks to Daisuke Homma)
781 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
782 space for its heap. (thanks to Thiemo Seufer)
783 * optimization: SBCL on MIPS platforms now supports dynamic-extent
784 closures. (thanks to Thiemo Seufer)
785 * minor incompatible change: eof selects abort in the debugger.
786 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
787 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
789 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
790 deprecated, and will go away in a future revision of SBCL.
791 * minor incompatible change: GC-ON and GC-OFF are no longer
792 implemented with a counter, it does not matter how many times gc
793 is switched on or off
794 * bug fix: discriminating functions for generic function classes
795 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
796 make invalid assumptions about method precedence order. (reported
798 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
799 platforms. (thanks to Thiemo Seufer)
800 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
801 * bug fix: correct pathname printing with printer escaping is on.
802 (thanks to Kevin Reid)
803 * bug fix: complex VOP definitions in "user-space" no longer trigger
804 package locks. (reported by Zach Beane)
805 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
806 for funcallable-instance functions, and is no different from
808 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
809 characters in the current readtable. (reported by Nicholas Neuss)
810 * bug fix: SUBTYPEP on various CONS types returns more a more
811 accurate acknowledgment of its certainty.
812 * optimizations: REMOVE-DUPLICATES now runs in linear time on
813 lists in some cases. This partially fixes bug 384.
814 * flush all standard streams before prompting in the REPL and the
816 * bug fix: signal handling and triggering gc do not conflict
817 directly anymore, in particular a high frequency sb-sprof does
818 not prevent gc from running
819 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
820 approximation for timezone and DST information between the
821 universal time epoch and the smallest negative 32-bit time_t.
822 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
823 year 1899 so long as the encoded time is non-negative.
824 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
825 the correct answer for non-constant rotate amounts when performing
826 an inline 32-bit rotation.
828 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
829 there is only one thread in the session
830 ** bug fix: memory leak for streams created in one thread and
831 written to in another
832 ** bug fix: lockup when compiled with gcc4
833 ** bug fix: race that allows the gc to be triggered when gc is
835 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
836 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
838 ** bug fix: finished threads are gc'ed properly
839 * fixed some bugs revealed by Paul Dietz' test suite:
840 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
841 has arguments with a different set of applicable methods from
842 the orignal arguments.
843 ** The type error thrown by MAP now has a correct expected-type
845 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
846 name a compiled function.
847 ** Three MISC tests where a large bignum was improperly coerced to
848 a float that couldn't represent that bignum during type
849 derivation were fixed.
850 ** SUBTYPEP can now handle types involving the negation of a
851 list-form FUNCTION type.
852 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
853 as (COMPLEX (AND RATIO (NOT FIXNUM))).
854 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
856 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
857 * New feature: Experimental support for bivalent streams: streams
858 opened with :element-type :default now allow character and binary
859 (unsigned-byte 8) I/O
860 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
861 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
863 * bug fix: no more highly sporadic "couldn't check whether ~S is
864 readable" when reading a stream and an interrupt hits in the middle
865 of a select system call
866 * compiler better recognizes complex arrays (reported by Eduardo
868 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
869 for variables on SBCL built with linkage-tables. (reported by Luis
871 * various error reporting improvements.
872 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
873 (Thanks to Thiemo Seufer)
874 * bug fix: nested reader invokations work correctly
875 * bug fix: it is possible to have simultaneous references to foreign
876 code and foreign data with the same name.
878 ** added x86-64 support
879 ** incompatible change: the threading api now works with thread
880 objects instead of thread ids
881 ** bug fix: threads are protected from signals and interruption when
882 starting up or going down
883 ** bug fix: a race where an exiting thread could lose its stack to gc
884 ** bug fix: don't halt on infinite error in threads if possible
885 ** fixed numerous gc deadlocks introduced in the pthread merge
886 ** bug fix: fixed thread safety issues in read and print
887 ** bug fix: debugger doesn't hang on session lock if interrupted at
888 an inappropriate moment
889 ** bug fix: run-program is now thread safe(r)
890 ** bug fix: inner with-recursive-lock no longer releases the mutex
891 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
892 * fixed some bugs revealed by Paul Dietz' test suite:
893 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
894 EXPECTED-TYPE slots filled.
895 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
897 ** MAKE-CONDITION accepts classes as type-designators.
898 ** COMPILE may never return NIL.
899 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
900 range before calling Unix time functions
902 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
903 * numerous signal handling fixes to increase stability
904 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
905 * minor incompatible change: we now correctly canonize default
906 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
907 as per the MOP, rather than the historical (INITARG INITFUNCTION
908 INITFORM). (reported by Bruno Haible)
909 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
910 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
911 for more information.
912 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
913 pathname is a directory pathname.
914 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
915 * dynamic space size on PPC has been increased to 768Mb. (thanks to
917 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
918 :METACLASS argument in addition to a class name. (reported by
919 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
920 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
921 (reported by Bruno Haible; patch from Gerd Moellmann)
922 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
924 * bug fix: more cleanups to the floating point exception handling on
925 x86-64 (thanks to James Knight)
926 * bug fix: the compiler does not try to constant fold calls of
927 COERCE and BIT-* functions when they return freshly constructed
928 objects. (reported by Nikodemus Siivola and Paul Dietz)
929 * optimization: improved the MIPS versions of generic (in the
930 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
931 * optimization: direct conversion of (unsigned-byte 32) to floats on
932 the PowerPC platform.
933 * optimization: structure instances with raw slots now use less
934 memory, and probably show better memory locality. (thanks to
936 * optimization: DYNAMIC-EXTENT declarations for lists and closures
937 are treated as requests for stack allocation on the x86-64,
938 Alpha-32, PPC and SPARC platforms.
939 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
940 the wrong file descriptor; implementation of SOCKET-OPEN-P.
941 (thanks to Tony Martinez)
943 ** gcing a dead thread can no longer lead to lockups
944 ** threads block signals until they are set up properly
945 ** errno is no longer shared by threads
946 ** interrupt-thread restores the eflags register on x86
947 ** fixed some lockups due to gc/thread interaction
948 * fixed some bugs revealed by Paul Dietz' test suite:
949 ** invalid dotted lists no longer raise a read error when
951 ** signal an error if a symbol that names a declaration is used
952 as the name of a type, or vice versa
953 ** allow using the (declare (typespec var*)) abbreviation for
954 (declare (type typespec var*)) with all type specifiers
955 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
956 ** always return NIL from PPRINT-POP when OBJECT is NIL
957 ** don't signal errors when pretty-printing malformed LABELS,
958 FLET or MACROLET forms
959 ** declarations in a DOLIST body are also in scope for the
961 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
963 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
966 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
967 * fixed cross-compiler leakages that prevented building a 32-bit
968 target with a 64-bit host compiler.
969 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
970 opened with :IF-EXISTS :OVERWRITE.
971 * fixed bug 281: error for an invalid qualifier in a short-form method
972 combination method is not signalled until the faulty method is called.
973 * bug fix: iteration variable type inferrer failed to deal with open
974 intervals. (reported by Alan Shields)
975 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
976 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
977 or more runtime options were provided to the sbcl binary.
978 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
979 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
980 * optimization: there's now a fast-path for fixnum arguments in the
981 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
982 * optimization: the code generated on x86-64 is more compact thanks
983 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
984 * bug fix: floating-point exception handling now partly works on
985 x86-64. (Thanks to James Knight)
986 * improvement to the MIPS backend from Thiemo Seufer: C-style
987 64-bit long long arguments and return values to alien functions
989 * fixed some bugs revealed by Paul Dietz' test suite:
990 ** the type-error signalled from WARN has a filled-in DATUM slot.
991 ** the type-error required when a stream is not associated with
992 a file has the stream as its datum.
993 ** type-errors on single-floats on x86-64 no longer have
994 :INVALID-OBJECT as the datum
995 ** the type-errors signalled for invalid function names now have
996 a correct expected type
997 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
998 for structures defined with a :TYPE. Documentation strings for
999 typed structures are no longer immediately discarded
1000 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1001 broadcast streams and synonym streams. FILE-LENGTH now also works
1002 on broadcast streams.
1004 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1005 * incompatible change: the --noprogrammer option, deprecated since
1006 version 0.7.5, has been removed. Please use the equivalent
1007 --disable-debugger option instead.
1008 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1010 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1011 inoperational for a while now) has been completely removed.
1012 * null lexical environments are now printed as #<NULL-LEXENV>,
1013 significantly reducing the amount of clutter in typical backtraces.
1014 * documentation on weak pointers, finalization, and after GC hooks
1015 has been added to the manual.
1016 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1017 as other specialized array types, is much faster. SUBSEQ and
1018 COPY-SEQ on such arrays have also been sped up.
1019 * optimization: EQL is now more efficient when at least other argument
1020 is known to be of type (OR FIXNUM (NOT NUMBER)).
1021 * fixed bug: the runtime is now less vulnerable to changes in the
1022 size of the SBCL object on OS X, and virtual memory is reserved for
1023 all spaces that need to be at a fixed address.
1024 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1025 * fixed bug: finalizers and after GC hooks that cause consing are now
1027 * fixed bug: compiler error messages and summaries are now printed to
1028 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1029 * fixed inference of the upper bound of an iteration variable.
1030 (reported by Rajat Datta).
1031 * fixed bug 211e: calling local functions with duplicated constant
1032 keyword argument no longer causes a bogus style warning about an
1034 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1035 ftype declaration to be disregarded. (reported by Dave Roberts)
1036 * fixed bug 373: caused by erronous compilation of references to alien
1037 variables in the runtime on ppc/darwin.
1038 * fixed bug 376: CONJUGATE type deriver.
1039 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1040 (reported by Baughn on #lisp)
1041 * a cross-compiler bug on non-x86 platforms has been identified and
1042 fixed. (thanks to Bruno Haible)
1043 * improvements to the MIPS runtime code for increased stability.
1044 (thanks to Thiemo Seufer)
1045 * increased the maximimum compact environment size to allow
1046 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1047 * partial workaround for bug 135: don't name the function we're
1048 calling for hairy cases of EVAL, so as not to accumulate one environment
1049 entry per call to EVAL. (reported by Kevin Reid)
1050 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1051 * optimization: type testing for non-vector arrays should be faster.
1052 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1054 * bug fix: setting 31st element of a bit vector to zero did not work
1056 * bug fix: redefining a class definition which failed due to a
1057 previous accessor / function clash now works (but see BUGS entry
1058 #380 for more problems in this area). (thanks to Zach Beane)
1059 * the long form of DEFINE-METHOD-COMBINATION disables method group
1060 checking when given a single method group with pattern *. (thanks
1062 * on x86 compiler supports stack allocation of results of simple
1063 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1064 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1065 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1066 * fixed some bugs related to Unicode integration:
1067 ** the restarts for recovering from input and output encoding
1068 errors only appear when there is in fact such an error to
1070 * fixed some bugs revealed by Paul Dietz' test suite:
1071 ** MISC.549 and similar: late transformation of unsafe type
1072 assertions into derived types caused unexpected code
1074 ** SCALE-FLOAT type deriver is less wrong.
1075 ** type derivers for EXP, LOG and similar functions compute result
1076 types for complex arguments better.
1077 ** (MISC.563) CONJUGATE type deriver works for very restricted
1079 ** out-of-line type testers for character strings are available.
1080 ** EQUAL compiler transform understands specialness of objects
1082 ** accessing double-floats stored on the stack now works on x86-64.
1083 ** debugger internals could sometimes create invalid lispobjs,
1084 resulting in GC crashes.
1085 ** MISC.548: type check weakening can convert required type into
1087 ** initialization forms for bindings are not in scope of free special
1090 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1091 * incompatible change: thread support for non-NPTL systems has
1092 been removed - locking is buggy and unreliable. A threaded
1093 SBCL build will now warn at startup and refuse to create
1094 new threads, unless futex support is detected in the kernel
1095 * incompatible change: the top level REPL now has only an ABORT
1096 restart associated with it, not TOPLEVEL and ABORT as it used to.
1097 TOP and TOPLEVEL are now available as debugger commands for
1098 returning to the top level.
1099 * incompatible change: forms evaluated in the REPL now use the
1100 global optimization policy.
1101 * incompatible change: user- and system-initialization files are
1102 no longer processed with LOAD, but by READ and EVAL; hence the
1103 global optimization policy, startup package, readtable, etc,
1105 * The .fasl file format number has been incremented because of
1106 various incompatible changes.
1107 * internal entry point details and argument counts no longer appear
1108 in backtraces unless explicitly requested by setting
1109 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1110 * built-in and standard functions no longer have names like "top
1111 level local call to FOO".
1112 * fixed bug 32: functions defined in non-null lexical environments
1113 now have more legible printed representation
1114 * fixed bug 33: functions defined in non-null lexical environemnts
1115 are now more amenable to inspection by INSPECT.
1116 * workaround for bug 354: XEPs no longer appear in backtraces unless
1117 explicitly requested.
1118 * fixed bug: receiving the signal which results from attempting to
1119 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1120 SIGBUS on other *BSDs) on architectures where the C stack is also
1121 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1122 to debugger confusion or wild instability. (reported by Cheuksan
1124 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1125 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1126 (reported by Lutz Euler)
1127 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1128 compiled code. (reported by Paul Dietz)
1129 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1130 specialized parameter to a method to something that is not TYPEP
1131 the specializer is now possible.
1132 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1133 face of package deletion.
1134 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1135 pathname. (reported by David Tolpin on c.l.l)
1136 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1137 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1138 STRING-STREAM and FILE-STREAM, respectively.
1139 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1140 than previously; in addition, its test suite is now run on build.
1141 (thanks to Luke Gorrie)
1142 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1143 * optimization: added a immediate representation for single-floats
1145 * fixed some bugs revealed by Paul Dietz' test suite:
1146 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1147 ** attempting to create a package with a colliding nickname causes
1148 correctable errors to be signalled.
1149 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1150 ** several x86-64 backend bugs related to sign-extension of immediate
1153 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1154 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1155 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1157 * fixed loading of multiply forward-referenced layouts.
1158 (thanks to Cheuksan Wang)
1159 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1160 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1161 (see COMPILE-FILE documentation for details of :PRINT option)
1162 * fixed bugs 19 and 317: fixed-format floating point printing is
1163 more accurate. This also fixes a bug reported by Adam Warner
1164 related to the ~@F format directive.
1165 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1167 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1168 dispatch table if the from-char is a dispatch macro character.
1169 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1170 by the wordsize no longer ignore the last word. (reported by Lutz
1172 * fixed bug in type checking of dynamic-extent variables. (reported
1174 * optimization: sequence traversal functions use their freedom to
1175 coerce function designators to functions.
1176 * optimization: code with many calls to CLOS methods specialized on
1177 CLOS classes has had redundant type checks removed.
1178 * optimization: added declarations to speed up operations that access
1179 the internal character database (for example STRING-UPCASE)
1180 * optimization: comparison operations between floats and sufficiently small
1181 fixnums no longer create extra rationals
1182 * fixed some bugs related to Unicode integration:
1183 ** portions of multibyte characters at the end of buffers for
1184 character-based file input are correctly transferred to the
1185 start of the buffer at the next read.
1186 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1187 passing it through to OPEN.
1188 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1189 argument given to internal calls to OPEN.
1190 ** the built-in comment readers (introduced by character sequences
1191 ";" and "#|") are more forgiving to encoding errors; they will
1192 STYLE-WARN and then attempt to resync the stream at a character
1193 boundary. (thanks to Teemu Kalvas)
1194 * fixed some bugs in the x86-64 port:
1195 ** Negative short int return values from c-calls are sign-extended
1197 ** The stack is aligned to 16-bytes for c-calls, as required by
1198 the ABI. (thanks to Cheuksan Wang)
1199 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1200 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1201 for enums. (thanks to Vincent Arkesteijn)
1202 ** Multiple small optimizations and bugfixes for floating point
1204 * fixed some bugs revealed by Paul Dietz' test suite:
1205 ** Space, Tab, Linefeed, Return and Page have the invalid
1206 secondary constituent character trait.
1207 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1209 ** WITH-INPUT-FROM-STRING should only update the index place on
1211 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1212 works more reliably.
1213 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1214 with one-dimensional arrays with fill pointers.
1215 ** TYPE-OF failed on a complex with an integer realpart and a
1217 ** compiler failure during type inference for the code of form
1218 (IF (EQL X (THE ...)) ...) (MISC.535).
1220 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1221 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1222 platform. The port supports 61-bit fixnums, large memory spaces
1223 and reloading shared object files.
1224 * enhancement: saving cores with foreign code loaded is now
1225 supported on ppc/Darwin in addition to the previously supported
1227 * enhancement: the statistical profiler now walks deeper into the
1228 call stack for more meaningful call-graphs and accrued time
1229 reports (x86/x86-64 only). It also now reports time spent in
1231 * enhancement: it is now possible to trace most individual methods
1232 of a generic function in addition to tracing the generic function
1234 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1236 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1237 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1238 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1239 produces an error. (thanks to Vincent Arkesteijn)
1240 * bug fix: NAMESTRING on pathnames with :WILD components in their
1241 directories works correctly. (thanks to Artem V. Andreev)
1242 * fixed bug 125: compiler preserves identity of closures. (reported
1244 * bug fixed: functions with &REST arguments sometimes failed with
1245 "Undefined function" when compiled with (DEBUG 3). (reported by
1247 * bug fix: overflow during compiling of setting element of a bit
1248 vector with constant index and value. (reported by Timmy Douglas)
1249 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1250 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1251 * on x86 compiler partially supports stack allocation of dynamic-extent
1253 * GO and RETURN-FROM do not check the extent of their exit points
1254 when compiled with SAFETY 0.
1255 * fixed some bugs related to Unicode integration:
1256 ** encoding and decoding errors are now much more robustly
1257 handled; it should now be possible to recover even from invalid
1258 input or output to the terminal. (thanks to Teemu Kalvas)
1259 ** provided a first cut at implementing STRING-TO-OCTETS and
1260 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1261 ** altered the SB-MD5 contributed module slightly, changing the
1262 interface just enough for it to be supportable for builds where
1263 lisp characters are not eight bits.
1264 * fixed some bugs revealed by Paul Dietz' test suite:
1265 ** the FORMATTER-generated functions for ~V[ conditionals require
1266 the correct number of arguments.
1267 ** READ-FROM-STRING returns the mandated second value when applied
1268 to displaced strings.
1269 ** the #\Rubout and #\Backspace characters are treated as invalid
1270 constituent characters by the tokenizer.
1272 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1273 * new feature: reloading changed shared object files with
1274 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1275 * new feature: references to foreign variables and functions
1276 can now be compiled and loaded before the corresponding shared
1277 object file is loaded, as long as the foreign definitions are
1278 available at runtime.
1279 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1280 supported. (thanks to Dan Debertin)
1281 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1282 just keywords. (thanks to Vincent Arkesteijn)
1283 * fixed bug #331: structure-class instances corresponding to
1284 DEFSTRUCT forms are now created eagerly.
1285 * fixed bug #345: backtraces from calls to undefined functions work
1286 on x86 as well. Related bug #61 is now also partially fixed on x86
1287 (backtraces from throws to unknown catch tags.)
1288 * bug fix: lambda-list parsing is now stricter vrt. order and number
1289 of lambda-list keywords.
1290 * bug fix: as specified by AMOP, an error is signalled if a
1291 class-option appears multiple times in a DEFCLASS form. (reported
1293 * bug fix: RANDOM can be compiled when the compiler derives the type
1294 of its numeric argument as a disjoint set of small integers.
1295 (reported by Paul Dietz)
1296 * bug fix: starting a core saved with shared objects loaded when
1297 those objects are not available no longer causes threaded SBCL to
1298 hang. (reported by Sean Ross)
1299 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1301 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1302 argument, which must always be NIL. (reported by Kalle Niemitalo)
1303 * bug fix: printing 1.0d+23 no longer results in an error.
1304 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1305 * bug fix: structure slot setters preserve evaluation order. (thanks
1307 * fixed some bugs related to Unicode integration:
1308 ** RUN-PROGRAM can allow its child to take input from a Lisp
1309 stream. (reported by Stefan Scholl)
1310 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1311 locales. (reported by Ken Causey)
1312 * fixed some bugs revealed by Paul Dietz' test suite:
1313 ** INCF, DECF and REMF evaluate their place form as specified in
1315 ** FORMATTER expands ~{ ~} iteration directives with V or #
1316 parameters correctly.
1317 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1318 consequent uses no arguments correctly.
1319 ** the system has a partial understanding of the (COMPLEX RATIO)
1321 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1324 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1325 * new feature: a build-time option (controlled by the :SB-UNICODE
1326 keyword feature, enabled by default) for building the system with
1327 support for the entire 21-bit character space defined by the
1329 * new feature: the system now has rudimentary external-format
1330 support; the primary user-visible change at this time is that
1331 characters with the high bit set (such as lower-case-e-acute) will
1332 print correctly to a terminal in a UTF-8 environment.
1333 * minor incompatible change: BASE-CHAR no longer names a class;
1334 however, CHARACTER continues to do so, as required by ANSI.
1335 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1336 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1337 has been moved to the SB-EXT package (temporarily re-exported from
1339 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1340 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1342 * fixed bug #351: better error-handlind and reporting for malformed
1344 * fixed bug #350: bignum-printing is now more memory-efficient,
1345 allowing printing of very large bignums, eg. (expt 2 10000000).
1346 (reported by Bruno Haible)
1347 * fixed bug #302: better primitive-type selection for intersection
1349 * fixed bug #308: non-graphic characters now all have names, as
1350 required. (reported by Bruno Haible)
1351 * bug fix: redefining a class with different superclasses now correctly
1352 removes it from the direct-subclasses of its previous superclasses.
1353 (reported by David Morse)
1354 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1355 new value now works. (reported by Bruno Haible)
1356 * bug fix: correct canonicalization of multiple non-standard slot
1357 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1358 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1359 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1360 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1361 now exists, an signals an error.
1362 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1363 during macroexpansion for non-iteration variables as well. (reported
1364 by Bruno Haible for CMUCL)
1365 * bug fix: Cyclic structures and unprintable objects in compiler
1366 messages no longer cause errors. (reported by Bruno Haible)
1367 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1368 and READ-FROM-STRING all now return a primary value of NIL if
1369 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1370 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1371 (reported by Bruno Haible for CMUCL)
1372 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1373 do not designate a condition. (reported by Bruno Haible for
1375 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1376 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1377 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1378 permitting resolution in favour of any of the conflicting symbols.
1379 (reported by Bruno Haible for CMUCL)
1380 * bug fix: EQUAL compiler optimizations is less aggressive on
1381 strings which can potentially compare true despite having distinct
1382 specialized array element types.
1383 * bug fix: unit enumerations can be defined without dividing by
1384 zero. (thanks to Vincent Arkesteijn)
1385 * FORMAT compile-time argument count checking has been enhanced.
1386 (report from Bruno Haible for CMUCL)
1387 * a partial workaround for the bug 262: the compiler does not try to
1388 inline-expand a local function doing RETURN-FROM from a deleted
1389 BLOCK. (thanks to Peter Denno for the bug report and to David
1390 Wragg for the simple test case)
1391 * fixed some bugs revealed by Paul Dietz' test suite:
1392 ** RENAME-PACKAGE allows all package designators as new package
1394 ** constraint propagation and lambda variable substitution are
1395 more cautious in dealing with partially deleted code.
1396 ** compiler sometimes lost reoptimization passes.
1397 ** CERROR, given a condition as condition designator, passes its
1398 remaining arguments to the continue format control without
1400 ** Case-altering FORMAT directives work correctly on non-ASCII
1402 ** The REAL type specifier handles bounds outside the floating
1403 point ranges without signalling FLOATING-POINT-OVERFLOW.
1404 ** Functions with IR1-transformations can create intercomponent
1405 references to global functions.
1406 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1408 ** FORMAT ~R treats a nil value for its first parameter correctly.
1410 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1411 * enhancement: saving cores with foreign code loaded is now
1412 supported on x86/NetBSD and sparc/Linux in addition to the previously
1413 supported platforms.
1414 * bug fix: on some platforms repeated installations caused multiple
1415 copies of HTML documentation to be installed -- should not happen
1416 any more. (reported by Stefan Scholl)
1417 * bug fix: parsing self-recursive alien record types multiple times
1418 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1419 original patch by Helmut Eller for CMUCL)
1420 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1421 (thanks to Richard Kreuter)
1422 * bug fix: defining classes whose accessors are methods on existing
1423 generic functions in other (locked) packages no longer signals
1424 bogus package lock violations. (reported by François-René Rideau)
1425 * bug fix: special variables as DEFMETHOD parameters no longer have
1426 associated bogus type declarations. (reported by David Wragg and
1428 * bug fix: read-write consistency on streams of element-type
1429 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1430 * bug fix: redefiniton of the only method of a generic function with
1431 no DEFGENERIC no longer emits a full WARNING. In addition,
1432 redefinition of generic functions with no DEFGENERIC to an
1433 incompatible lambda list now signals an error. (thanks to Zach
1435 * bug fix: DEFGENERIC now works even when there's a function of the
1436 same name in an enclosing lexical environment. (thanks to Zach
1438 * fixed compiler failure, caused by instrumenting code during
1439 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1440 * optimization: added loop analysis and improved register allocation
1441 * fixed some bugs revealed by Paul Dietz' test suite:
1442 ** POSITION on displaced vectors with non-zero displacement
1443 returns the right answer.
1444 ** (SIMPLE-STRING) is a valid type specifier for sequence
1446 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1448 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1449 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1451 ** The justification version of the FORMAT ~< directive treats
1452 non-zero minpad parameter correctly.
1454 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1455 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1456 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1457 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1458 the supported interface.
1459 * new feature: Single-stepping of code compiled with DEBUG 2 or
1460 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1461 * new feature: saving cores with foreign code loaded is now
1462 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1463 Timothy Moore's work for CMUCL)
1464 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1465 parameters to * instead of NIL if no initform is supplied.
1466 (reported by Johan Bockgaard)
1467 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1468 correctly when FUNCALL appears as the car of the form. Note:
1469 despite this FUNCALL forms are not currently subject to
1470 compiler-macro expansion. (port of Raymond Toy's fix for the
1471 same from CMUCL, reported by Johan Bockgaard)
1472 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1473 (thanks for Teemu Kalvas)
1474 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1475 case instead of terminating the iteration (thanks for Julian
1476 Squires, Sean Champ and Raymond Toy)
1477 * bug fix: incorrect expansion of defgeneric that caused a style
1478 warning. (thanks for Zach Beane)
1479 * bug fix: slot accessor effective method computation works properly
1480 for classes with multiple non-standard applicable methods on
1481 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1482 * on x86 compiler supports stack allocation of results of LIST and
1483 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1484 CMUCL implementation by Gerd Moellmann)
1485 * fixed some bugs revealed by Paul Dietz' test suite:
1486 ** FORMAT strings with both the ~<~:;~> form of the justification
1487 directive and pretty-printing directives cause an error.
1489 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1490 * incompatible change: the internal functions
1491 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1492 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1493 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1494 instead of the old functions.
1495 * new feature: on platforms where "dladdr" is available foreign
1496 function names now appear in backtraces. (based on Helmut Eller's
1498 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1499 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1501 * documentation: ASDF manual is now distributed with SBCL.
1502 * bug fix: SBCL can now load its contributed modules with REQUIRE
1503 even if the system-provided entries have been removed from
1504 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1506 * bug fix: backtraces involving undefined functions or assembly
1507 routines are more informative. (thanks to Brian Downing)
1508 * bug fix: mutually referent alien structures now work correctly.
1509 (reported by Rick Taube)
1510 * bug fix: structures defined by WITH-ALIEN can be referred to
1511 within other definitions in the same WITH-ALIEN.
1512 * bug fix: division operators (MOD, TRUNCATE and the like) with
1513 constant zero divisors and integer dividends no longer generate
1515 * bug fix: provide default methods for INPUT-STREAM-P and
1516 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1517 * bug fix: improve the detection and resolution of MOP metacycles
1518 (where effective method computation depends on the generic function
1519 having its effective method computed). (reported by Bruno Haible)
1520 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1521 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1522 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1523 * bug fix: pathnames with relative directory components can be
1524 represented relative to default pathnames.
1525 * optimization: in taking the GCD of bignums, reduce the two bignums
1526 to approximately the same size (using Euclid's algorithm) before
1527 applying the more sophisticated binary GCD. (thanks to Juho
1529 * optimization: COUNT on bitvectors now operates word-at-a-time.
1530 * optimization: ASH with a positive, but not necessarily constant,
1531 (leftwards) shift, when in a modular context, is compiled to a
1533 * fixed some bugs revealed by Paul Dietz' test suite:
1534 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1535 if the corresponding argument is NIL.
1536 ** FORMAT directives accepting a minpad parameter treat negative
1538 ** literal commas as character parameters to FORMAT directives are
1540 ** literal spaces directly after ~<Newline> directives within a
1541 format-logical-block (~:< ~@:>) do not induce :FILL-style
1542 conditional newlines.
1543 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1544 as specified: it no longer includes conditional newlines).
1545 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1547 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1548 :PER-LINE-PREFIX argument does not evaluate to a string.
1550 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1551 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1552 the manual for details; for now, package locks can be disabled by
1553 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1554 if no major problems are found then it is likely that they will be
1555 compiled in unconditionally.
1556 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1557 unsupported operators on all platforms. To load a shared library
1558 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1559 object file, link it into a shared library outside of SBCL and
1560 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1562 * bug workaround: ROOM T and the GC were not working together
1563 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1564 reporting facility aren't preserved. That reporting has been
1565 disabled, so now until and unless someone figures out how to make it
1566 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1567 * minor incompatible change: as threatened around sbcl-0.8.0, the
1568 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1569 The symbols are also exported from SB-PCL for backwards
1570 compatibility, but more so than before SB-PCL should be treated as
1571 an implementation-internal package.
1572 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1574 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1575 It is known as of this release not to work on the Alpha, however.
1576 * fixed bug #167: errors signalled due to illegal syntax in method
1577 bodies are now more legible.
1578 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1579 designators and can hence be used with TYPEP.
1580 * fixed bug #333: CHECK-TYPE now ensures that the type error
1581 signalled, if any, has the right object to be accessed by
1582 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1583 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1584 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1586 * fixed bug #334: programmatic addition of slots using specialized
1587 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1588 and :ALLOCATION :CLASS slots.
1589 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1590 float exponents. (rereported by Peter Seibel)
1591 * fixed a bug: #\Space (and other whitespace characters) are no
1592 longer considered to be macro characters in standard syntax by
1593 GET-MACRO-CHARACTER.
1594 * fixed bug: initialization of condition class metaobjects no longer
1595 causes an instance of the condition to be created. (reported by
1597 * fixed bug: it is now possible to have slots such that
1598 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1599 description is neither :INSTANCE nor :CLASS.
1600 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1601 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1602 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1603 non-standard SLOT-DEFINITION-ALLOCATION values.
1604 * fixed bugs: various race conditions handling exiting threads.
1605 CL-PPCRE's thread torture test now passes.
1606 * fixed arguably-a-bug: GC time proportional to number of threads in
1607 system even when most of them are idle
1608 * optimization: improved performance of BIT and SBIT on bit-vectors.
1609 * .fasl file incompatibility: The fasl file version number has
1610 been incremented because of changes associated with package locks.
1612 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1613 * minor incompatible change: the system no longer provides
1614 optimization hints (conditions which are TYPEP
1615 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1616 mode; these hints are still emitted when higher SPEED optimization
1618 * new contrib module: a sampling profiler (profiling by statistical
1619 sampling, rather than by instrumenting functions) is available as
1620 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1621 * the behaviour of the standard function ED is now customizeable by
1622 third parties through a hook variable: see ED's documentation
1623 string for information on the protocol.
1624 * the compiler no longer emits efficiency notes for (FUNCALL X)
1625 when the type of X is uncertain under default optimization
1627 * fixed bug 276: mutating a binding of a specialized parameter to a
1628 method to something that is not TYPEP the specializer is now
1630 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1631 exhibit the required behaviour on the x86 platform. (thanks to
1632 Peter van Eynde, Eric Marsden and Bruno Haible)
1633 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1634 even for difficult arguments. (reported by Peter Graves)
1635 * fixed bug 141a: the backquote printer now descends quoted
1637 * fixed another bug in backquote printing: no more destructive
1638 modification of the form's list structure. (reported by Brian
1640 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1641 move between its address being taken and the call to
1642 interrupt_thread, fixing a crashing race condition.
1643 * the SB-POSIX contrib implementation has been adjusted so that it
1644 no longer exhibits ridiculously poor performance when constructing
1645 instances corresponding to C structs.
1647 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1648 * minor incompatible change: the sb-grovel contrib now treats C
1649 structures as alien (in the sense of SB-ALIEN) objects rather than
1650 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1651 has implications for memory management of client code
1652 (sb-grovel-returned objects must now be manually managed) and for
1653 type safety (alien objects now have full types).
1654 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1655 used to control emission of compiler diagnostics, rather than the
1656 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1657 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1658 quality should be considered deprecated.
1659 * install.sh now installs the user manual as well
1660 * (not quite a new documentable feature, but worth considering in
1661 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1662 beginnings of a semantically meaningful condition hierarchy is
1663 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1665 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1666 designator as the defaults argument.
1667 * fixed bug: Displaced arrays whose displaced-to array has become
1668 too small now cause ARRAY-DIMENSION to signal an error, providing
1669 for safer bounds-checking. (reported by Bruno Haible)
1670 * fixed bug: DEFCLASS slot definitions with identical :READER and
1671 :WRITER names now signal a reasonable error. (reported by Thomas
1673 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1675 * fixed bug: Invalid slot specification errors now print correctly.
1676 (thanks to Zach Beane)
1677 * fixed bug 320: Shared to local slot value transfers in class
1678 redefinitions now happen corrently from superclasses as
1679 well. (reported by Bruno Haible)
1680 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1682 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1683 improper lists correctly. (reported by Bruno Haible)
1684 * fixed bug 313: source-transform for <fun-name> was erroneously
1685 applied to a call of a value of a variable with name <fun-name>.
1686 (reported by Antonio Menezes Leitao)
1687 * fixed bug 307: The obsolete instance protocol ensures that
1688 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1689 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1690 remove dead unknown-values globs from the middle of the stack.
1691 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1692 easier to resume long computations after using *BREAK-ON-SIGNALS*
1693 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1694 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1695 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1696 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1697 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1698 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1700 * fixed a (fairly theoretical) bug in string printing: if
1701 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1702 does not have array-element-type equal to the most general string
1704 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1705 function name. (thanks to Nikodemus Siivola)
1706 * fixed bug: compile-time format string checker failed on
1707 non-closed ~{. (reported by Thomas F Burdick)
1708 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1709 don't warn on legal loop code involving more than one aggregate
1710 boolean. (thanks to Nikodemus Siivola)
1711 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1712 in keyword position to MAKE-PACKAGE was not being reported as
1714 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1715 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1717 * fixed bugs 280 and 312: the checking for multiple definitions in a
1718 file is less likely to become confused by uses of inline
1720 * fixed bug: the #S reader macro performs the keyword coercion
1721 specified for slot names. (reported by Kalle Niemitalo)
1722 * fixed bug: lambda lists may contain symbols whose names start with
1723 & but are not lambda-list-keywords; their occurrence triggers a
1725 * fixed bug 321: define-method-combination argument lambda lists do
1726 not cause invalid code to be generated when &optional or &aux
1727 variables have default values. (reported by Bruno Haible)
1728 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1729 have CLOS classes; this appears also to have fixed reported
1730 instability in stack exhaustion detection.
1731 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1732 MUFFLE-WARNING when no associated restart is present is now
1734 * optimization: rearranged the expansion of various defining macros
1735 so that each expands into only one top-level form in a
1736 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1738 * optimization: used a previously little-used slot in symbols to
1739 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1741 * fixed some bugs revealed by Paul Dietz' test suite:
1742 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1744 ** Fixed an optimization bug related to inheritance of initforms
1745 from local to shared slots.
1746 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1747 ** CAST optimizer forgot to flush argument derived type.
1748 ** print/read consistency on floats is now orders of magnitude
1749 more likely. (thanks also to Bruno Haible for a similar report
1751 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1752 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1753 for objects of type REAL. Make it so.
1754 ** SXHASH is specified (infelicitously) to respect similarity,
1755 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1756 it so. (thanks to Markus Ziegler)
1757 ** on the Alpha, the compiler succeeds in compiling functions
1758 returning a known number of arguments greater than 63.
1759 ** fixed handling of invalid NIL arguments in keyword position
1761 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1763 ** provided a readably-printable representation for RANDOM-STATE
1765 ** ensured that pathnames, where they have a namestring, always
1766 print using #P"..." syntax.
1768 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1769 * Support for the forthcoming 2.0 version of the NetBSD kernel
1770 running on x86 hardware has been added. (thanks to Perry
1771 E. Metzger most immediately, and others for their past work)
1772 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1773 current release version; SBCL's OpenBSD support had been broken
1774 since about the time of OpenBSD's switch to ELF binary format.)
1775 * [placeholder for DX summary]
1776 ** user code with &REST lists declared dynamic-extent, under high
1777 speed or space and low safety and debug optimization policy.
1778 * The manual has been converted to Texinfo format and the debugger
1779 chapter from the cmucl manual has been added.
1780 * A facility has been added to extract documentation strings from
1781 sbcl and store them as Texinfo-formatted snippets for inclusion in
1782 the manual (via Texinfo's @include directive)
1783 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1784 the test case to Dave Roberts)
1785 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1786 pointers. (reported by Sean Ross)
1787 * bug fix: PROFILE output is printed nicely even for large numerical
1788 values. (thanks to Zach Beane)
1789 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1790 greater than 32 handle EOF correctly.
1791 * bug fix: on X86 an immediate argument of the IMUL instruction is
1792 correctly printed in disassembly. (thanks to Lutz Euler)
1793 * bug fix: class slots in redefined classes preserve their old
1794 values. (thanks to Bruno Haible and Nikodemus Siivola)
1795 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1796 succeeds. (reported by Marco Baringer)
1797 * fixed some bugs revealed by Paul Dietz' test suite:
1798 ** READ-SEQUENCE now works on ECHO-STREAMs.
1799 ** RATIONALIZE works more according to its specification. (thanks
1802 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1803 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1804 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1805 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1806 should matter to you only if you rebind the printer control
1807 variables and then find you want different bindings in the
1808 debugger than in the ordinary execution of your program.)
1809 * The runtime build system has been tweaked to support building
1810 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1811 assembler and linker. (thanks to Nikodemus Siivola)
1812 * Unbound, undefined, undeclared variables now trigger full
1813 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1814 more often programmer error than deliberate exploitation of undefined
1816 * optimization: the hash algorithm for strings has changed to one
1817 that is less vulnerable to spurious collisions. (thanks to Juho
1819 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1820 needless bounds checking. (thanks to Juho Snellman)
1821 * optimization: implemented multiplication as a modular
1822 (UNSIGNED-BYTE 32) operation on the PPC backend.
1823 * fixed some bugs revealed by Paul Dietz' test suite:
1824 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1826 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1827 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1828 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1830 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1832 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1834 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1835 their output stream on EOF from read.
1836 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1837 have been read to end-of-file.
1838 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1840 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1841 description of determination of which consecutive characters
1843 ** Printing the "Space" character with escaping on now yields "#\\ ",
1844 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1845 ** Reading floating-point numbers with *READ-BASE* set to a number
1846 less than 10 works correctly.
1847 ** Reading floating-point numbers with *READ-BASE* set to a number
1848 more than 10 works correctly.
1849 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1850 the readtable currently in effect.
1852 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1853 * minor incompatible change: parsing of namestrings on a physical
1854 (Unix) host has changed; numbers after the final #\. in a
1855 namestring are no longer interpreted as a version field. This is
1856 intented to be largely invisible to the user, except that the
1857 meaning of the namestring "*.*.*" has changed: it now refers to a
1858 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1859 should usually be replaced by
1860 (make-pathname :name :wild :type :wild :version :wild)
1861 with the added benefit that this is more likely to be portable.
1862 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1863 option to OPEN now signals an error if the file being opened
1864 exists; this may have an impact on existing code.
1865 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1866 signals received, on the PowerPC platforms (both Linux and
1867 Darwin). (thanks to Pierre Mai for pointing out the location of
1869 * several fixes on OS X: The system now builds and runs cleanly on
1870 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1871 (thanks to Brian Mastenbrook)
1872 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1873 second-resolution: integer multiples of 1/3600 between -24 and 24.
1874 (thanks to Vincent Arkesteijn)
1875 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1876 type when called with 1 argument; PEEK-CHAR checked type of
1877 PEEK-TYPE only after having read first character from a
1878 stream. (reported by Peter Graves)
1879 * bug fix: the garbage collector now has much better locality
1880 behaviour, and in particular no longer treats all memory as being
1881 exhausted when many small objects point to each other in a deeply
1883 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1884 recognized as being TYPEP their class.
1885 * bug fix: the PUSHNEW documentation string has been corrected.
1886 (thanks to Vincent Arkesteijn)
1887 * bug fix: defaulting of the value for the last of an atypically
1888 large number of multiple values being bound was not being
1889 performed correctly on the Alpha or PPC platforms
1890 * optimization: implemented multiplication as a modular
1891 (UNSIGNED-BYTE 32) operation on the x86 backend.
1892 * optimization: SEARCH on simple-base-strings can now be open-coded.
1893 (see also contrib/compiler-extras.lisp for inspiration for
1894 teaching the compiler about the Boyer-Moore algorithm).
1895 * value, returned by MAX (and MIN) called with several EQUALP, but
1896 not EQL, arguments now does not depend on compiler settings.
1897 * fixed some bugs revealed by Paul Dietz' test suite:
1898 ** in stack analysis liveness information is propagated from
1899 non-local entry points.
1900 ** pathwise CAST removing failed when the CAST node did not start
1902 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1903 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1905 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1906 host is already defined.
1907 ** RENAME-FILE works on streams instead of signalling an internal
1909 ** PEEK-CHAR uses the current readtable when determining whether
1910 or not a character is whitespace.
1911 ** MERGE-PATHNAMES handles the case when the pathname does not
1912 specify a name while the default-pathname specifies a version.
1913 ** Pathnames now stand a better chance of respecting print/read
1915 ** Attempting to use standardized file system operators with a
1916 pathname with invalid :DIRECTORY components signals a
1918 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1920 ** DIRECTORY on logical pathnames is more correct.
1921 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1922 signal a TYPE-ERROR if their argument is not a stream.
1923 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1924 designator argument does not designate a stream.
1925 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1926 examining the synonym.
1927 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1929 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1930 element-type larger than ([UN]SIGNED-BYTE 32).
1932 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1933 * When built with the :SB-FUTEX feature, threaded builds now take
1934 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1935 for faster/more reliable mutex and condition variable support.
1936 * Incompatible change (but one you probably shouldn't have been using
1937 anyway): the interface and code for arbitrating between multiple
1938 threads in the same user session has been redesigned.
1939 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1940 error when called without an explicit environment argument.
1941 (thanks to Nikodemus Siivola)
1942 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1943 confused about their position. (thanks to Adam Warner and Gerd
1945 * bug fix: Pretty printing backquoted forms with unquotations in the
1946 argument list position of various code constructs such as LAMBDA
1947 now works correctly. (reported by Paul Dietz)
1948 * bug fix: Pretty printing unquotations no longer loses all
1949 stream position information.
1950 * optimization: performance of string output streams is now less
1951 poor for multiple small sequence writes.
1952 * optimization: performance of CSUBTYPEP in the presence of complex
1953 expressions involving CONS and NOT many times has been improved.
1954 (reported by Paul Dietz)
1955 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1957 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1958 streams for the REPL, for the debugger, and so on. (thanks to
1960 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1961 * fixed some bugs revealed by Paul Dietz' test suite:
1962 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1963 is ignored if it is too small, rather than propagating through
1964 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1965 ** extremely complex negations of CONS types were not being
1966 sufficiently canonicalized, leading to inconsistencies in
1968 ** VALUES tranformer lost derived type.
1970 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1971 * fixed a bootstrapping bug: the build process no longer assumes
1972 that the various BOOLE-related constants have the same value in
1973 host and target lisps. (noted by Paul Dietz' test suite on an
1974 SBCL binary built from CLISP)
1975 * The system can now be dynamically linked on the MIPS platform,
1976 which enables dynamic loading of foreign code from Lisp. (thanks
1977 to Ralf Baechle for discussions on the MIPS ABI)
1978 * The system now records debugging information for its own source
1979 files in a filesystem-position-independent manner, relative to
1980 the "SYS" logical host.
1981 * fixed a compiler bug: MV-LET convertion did not check references
1982 to the "max args" entry point. (reported by Brian Downing)
1983 * tweaked disassembly notes to be less confident about proclaiming
1984 some instruction as an LRA. (thanks to Brian Downing)
1985 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1986 now each have their own history, command character, and other
1987 characteristics. (thanks to David Lichteblau)
1988 * fixed some bugs revealed by Paul Dietz' test suite:
1989 ** compiler failure in compiling LOGAND expressions including a
1991 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1992 shift greater than 32.
1993 ** FLUSH-DEST did not mark blocks for type check regeneration.
1994 ** HANDLER-CASE failed to accept declarations in handler clauses
1995 in some circumstances.
1997 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1998 * New code in contrib/sb-introspect (still probably not entirely
1999 stable yet) provides some support for smart Lisp development
2000 environments like SLIME.
2001 * The conditions signalled for errors occurring when loading .fasl
2002 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2003 in a way which should help ASDF recover gracefully.
2004 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2005 stuff has been cleaned up. If you code contrib/ stuff, this might
2006 affect you, and you can look at contrib/README, contrib/STANDARDS,
2007 and/or the 0.8.4.27 diff to check.
2008 * In full calls the compiler now does not generate checks for declared
2009 argument types for all arguments.
2010 * various threading fixes
2011 ** and some experimental patches which didn't make it into
2012 the main tree for this release, but which are shipped in
2013 contrib/experimental-thread.patch as a possible fix for some
2014 failures (deadlock, spinning...) in GC-intensive multithreaded
2016 * fixed PPC build problem (source code incompatibility of different
2017 library versions): added offsetof() hackery which attempts to divine
2018 where glibc maintainers put uc_mcontext today
2019 * fixed bug 282: compiler does not trust type assertions while passing
2020 arguments to a full call.
2021 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2022 &OPTIONAL VALUES type parameter.
2023 * fix bug 214: algorithm for noting rejected templates is now more
2024 similar to that of template seletion. (also reported by rydis on
2026 * fixed bug 141b: printing backquoted information readably and prettily
2027 inserts a space where necessary.
2028 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2029 (CHARACTER 10) are now reported as errors, rather than propagated
2030 as unknown types. (reported by piso on #lisp)
2031 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2032 with values NIL and :ERROR. (thanks to Milan Zamazal)
2033 * fixed bug 191c: CLOS now does proper keyword argument checking as
2034 described in CLHS 7.6.5 and 7.6.5.1.
2035 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2036 longer raise an error; further, using a list as a for-as-arithmetic
2037 counter now raises a meaningful error.
2038 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2039 now understood by sequence creation functions such as MAKE-SEQUENCE
2041 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2042 a STRING-INPUT-STREAM.
2043 * compiler enhancement: SIGNUM is now better able to derive the type
2045 * type declarations inside WITH-SLOTS are checked. (reported by
2047 * fixed some bugs revealed by Paul Dietz' test suite:
2048 ** incorrect optimization of TRUNCATE for a positive first
2049 argument and negative second.
2050 ** compiler failure in let-convertion during flushing dead code.
2051 ** compiler failure while deriving type of TRUNCATE on an
2052 interval, containing 0.
2053 ** ASH of a negative bignum by a negative bignum count now returns
2055 ** intersection of CONS types now canonicalizes properly, fixing
2056 inconsistencies in SUBTYPEP.
2058 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2059 * incompatible change: The --disable-debugger command line
2060 option now clobbers the debugger at a more fundamental
2061 level, by redefining #'INVOKE-DEBUGGER instead of by
2062 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2063 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2064 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2065 enter the debugger REPL and then suffer recursive errors
2066 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2067 while under the new system, BREAK in --disable-debugger mode
2068 terminates the system just as an unhandled error would.
2069 * fixed compiler performance when processing loops with a step >1;
2070 * bug fix: DOCUMENTATION now retrieves generic function
2071 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2072 support has been systematized, and now supports the methods
2073 specified by ANSI, along with a default method and a method for
2074 slot documentation. (reported by Nathan Froyd)
2075 * bug fix: effective methods associated with a generic function are
2076 no longer cached over a change of that generic function's method
2077 combination. (reported by Andreas Fuchs)
2078 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2079 names a non-existent directory. (thanks to Andreas Fuchs)
2080 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2081 the PPC platform, lead to stack corruption; this has been fixed.
2082 (reported by Rainer Joswig)
2083 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2084 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2085 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2086 arithmetic in general, is now much more reliable on the PPC
2088 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2089 platform now returns the right answer.
2090 * optimization: restored some effective method precomputation in
2091 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2092 precomputation is now tunable.
2093 * optimization: compiler-internal data structure use has been
2094 reviewed, and changes have been made that should improve the
2095 performance of the compiler by about 20%.
2096 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2097 simple-base-strings and simple-bit-vectors is improved.
2098 * optimization: the optimization of 32-bit logical and arithmetic
2099 functions introduced in version 0.8.3 on the x86 has been
2100 implemented on the mips, ppc and sparc platforms; an
2101 implementation of the same facility, but for 64-bit arithmetic,
2102 has been added for the alpha.
2103 * microoptimization: the compiler is better able to make use of the
2104 x86 LEA instruction for multiplication by constants.
2105 * bug fix: in some situations compiler did not report usage of
2106 generic arithmetic in (SPEED 3) policy.
2107 * bug 145b fix: compiler used wrong type specifier while converting
2108 MEMBER-types to numeric.
2109 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2111 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2112 index argument now works properly on the Alpha platform.
2113 * bug fix: floating point exception treatment on the Alpha platform
2115 * bug fix: FILE-POSITION works much better on string input and
2116 output streams. (thanks to Nikodemus Siivola)
2117 * bug fix: many threading/garbage collection symptoms sorted.
2118 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2119 might be pseudo-atomic.
2120 * internal change: Stopping for GC is now done with signals not
2121 ptrace. GC is now done in whichever thread wanted it, instead of
2123 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2125 * bug fix: result form in DO is not contained in the implicit
2127 * incompatible change: ICR structure is changed; the value part of
2128 CONTINUATION is now called LVAR; corresponding functions are
2129 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2130 * added type deriver for ISQRT (thanks to Robert E. Brown).
2131 * bug fix: better support for loading from the command line when an
2132 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2134 * fixed some bugs revealed by Paul Dietz' test suite:
2135 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2136 ** ROUND and FROUND now give the right answer when given very
2137 small float arguments.
2138 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2140 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2141 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2142 ** LCM should return a non-negative integer.
2143 ** PARSE-INTEGER returned the index of a terminator instead of the
2144 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2145 ** PARSE-INTEGER returned an incorrect index being applied to a
2147 ** LCM with two arguments of 0 returns 0 rather than signalling
2149 ** unsigned addition of a 32-bit constant with the high bit set no
2150 longer causes an internal compiler error on the x86.
2151 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2152 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2153 with negative last argument.
2154 ** byte specifiers with zero size and position no longer cause
2155 an error during type derivation.
2156 ** bignum multiplication on the Alpha platform now returns the
2158 * porting: The system now builds on SuSE AMD64, although it still
2159 generates a 32-bit binary.
2160 * .fasl file incompatibility: The fasl file version number has
2161 been incremented (because of the changes to internal compiler
2162 data structures referred to above).
2164 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2165 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2166 more accurately, on the Darwin kernel running on PowerPC hardware.
2167 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2168 * Compiler code deletion notes now signal a condition of type
2169 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2170 an associated MUFFLE-WARNING restart.
2171 * The compiler now performs limited argument count validation of
2172 constant format strings in FORMAT, and where appropriate in ERROR,
2173 CERROR and WARN. (thanks to Gerd Moellmann)
2174 * New ASDF-INSTALL contrib can be used for automatic download and
2175 installation of third-party Lisp code from CCLAN or other sites
2177 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2178 which forces another thread to execute a function supplied by the
2180 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2181 now accept and act upon their :ELEMENT-TYPE keyword argument.
2182 (reported by Martin Atzmueller, Edi Weitz)
2183 * bug fix: FILE-POSITION now accepts position designators up to
2184 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2185 is the greater. (thanks to Patrik Nordebo)
2186 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2187 Kalle Olavi Niemitalo)
2188 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2189 printable. (reported by Eric Marsden)
2190 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2191 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2192 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2193 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2194 (thanks to Stig Sandoe)
2195 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2196 UNREAD-CHAR now correctly includes the unread character in the
2197 target sequence. (thanks to Gerd Moellmann)
2198 * bug fix in threaded builds: the system can now be suspended and
2199 resumed by shell job control with minimal disruption.
2200 * bug fixes in times and timezones >2038AD
2201 * better handling of "where is GNU make?" problem in build scripts
2202 (thanks to Nikodemus Siivola)
2203 * new optimization: inside a named function any reference to a
2204 function with the same name is considered to be a self-reference;
2205 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2206 optimization quality.
2207 * new optimization on x86: logical functions and + now have
2208 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2209 used when the result is truncated to 32 bits.
2210 * VALUES declaration is partially enabled.
2211 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2212 * fixed some bugs revealed by Paul Dietz' test suite:
2213 ** The system now obeys the constraint imposed by
2214 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2215 types form a lattice under type intersection.
2216 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2217 ** ASSOC now ignores NIL elements in an alist.
2218 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2219 and (1+ MOST-POSITIVE-FIXNUM) answers.
2220 ** The addition of a method with invalid qualifiers to a generic
2221 function does not cause an error to be signalled immediately;
2222 a warning is signalled, and the error is generated only on
2223 calling the generic function.
2224 * changed .fasl file version number, in part to add type codes for
2225 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2226 obscure ANSI requirements
2228 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2229 * fixed bug 148: failure to inline-expand a local function left
2230 garbage, confusing the compiler.
2231 * fixed bugs 3cd: structure slot readers perform type check if the
2232 slot can have an invalid value (i.e. it is either not initialized
2233 or can be written with a less specific slot writer).
2234 * bug fix: the compiler now traps array references to elements off
2235 the end of an array; previously, the bounds checking in some
2236 circumstances could go off-by-one.
2237 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2239 * type declarations for array element types now obey the description
2240 on the CLHS page "Declaration TYPE", as per discussions on
2241 sbcl-help around 2003-05-08. This means that a declaration
2242 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2243 declaration, all references to BAR will be asserted or assumed
2244 (with THE, so dependent on compiler policy) to involve objects of
2245 type FOO. Note that no such declaration is implied in
2246 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2247 * declared types of functions from the "Conditions"
2248 chapter. (reported by Paul Dietz)
2249 * bug fix: CERROR accepts a function as its first argument.
2250 * bug fix: NTH an NTHCDR accept a bignum as index
2251 arguments. (reported by Adam Warner)
2252 * optimization: character compare routines now optimize comparing
2253 against a constant character. (reported by Gilbert Baumann)
2254 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2255 argument now works properly on the MIPS platform.
2256 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2257 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2258 declared to have a functional type, does not cause an error
2260 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2261 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2262 * fixed bug: if last continuation of a deleted block has a
2263 destination, this destination should be deleted too. (reported by
2265 * fixed a bug in the bootstrap process: the host compiler's values
2266 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2267 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2268 test case from Patrik Nordebo)
2269 * improved the ability of the disassembler on the PPC platform to
2270 provide helpful disassembly notes.
2271 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2272 the class in more cases than previously.
2273 * bug fix: FILE-POSITION now understands :START and :END for
2274 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2275 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2276 8) data. (thanks to David Lichteblau)
2277 * bug fix: it is possible to add a method to a generic function
2278 without lambda list.
2279 * bug fix: reader failed to signal END-OF-FILE inside an
2280 object representation. (reported by Nikodemus Siivola)
2281 * fixed some bugs revealed by Paul Dietz' test suite:
2282 ** LAST and [N]BUTLAST should accept a bignum.
2283 ** condition slot accessors are methods.
2284 ** (VECTOR NIL) is a subtype of STRING.
2286 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2287 * minor incompatible change: some nonsensical specialized lambda
2288 lists (used in DEFMETHOD) which were previously ignored now signal
2290 * minor incompatible change: the system is now aware of the types of
2291 variables in the COMMON-LISP package, and will signal errors for
2292 most violations of these type constraints (where previously they
2293 were silently accepted).
2294 * minor incompatible change: COMPILE-FILE now uses the freedom
2295 afforded (ANSI 3.2.2.3) to use derived function types for
2296 functions defined in the same file. This also permits the system
2297 to warn on static type mismatches and function
2298 redefinition. (Currently it does not work with high DEBUG level.)
2299 * minor incompatible change: VALUES declaration is disabled.
2300 * When issuing notes, the compiler now signals a condition of type
2301 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2302 restart for use in user handlers. It is expected that the
2303 COMPILER-NOTE condition will eventually become a condition
2304 supertype to a hierarchy of note types, which will then be
2305 handleable in a similar fashion. However, at the moment, no such
2306 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2307 but it's an implementation detail, not a classification for the
2309 * Changes in type checking closed the following bugs:
2310 ** type checking of unused values (192b, 194d, 203);
2311 ** template selection based on unsafe type assertions (192c, 236);
2312 ** type checking in branches (194bc).
2313 * A short form of VALUES type specifier has ANSI meaning (it has
2314 increased the number of situations when SBCL cannot perform type
2316 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2317 keywords or constants is permissible.
2318 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2319 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2320 classes. (thanks to Antonio Martinez)
2321 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2322 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2323 argument to a pretty-print stream. Instead, it leaves any such
2324 operations to DESCRIBE-OBJECT methods.
2325 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2327 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2328 lambda lists. (thanks to David Lichteblau)
2329 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2330 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2331 (thanks to Gerd Moellmann)
2332 * fixed bug 246: increased compilation speed of long
2333 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2335 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2337 * DEFCONSTANT now throws a condition of type
2338 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2339 constant to a non-EQL value; CONTINUE and ABORT restarts
2340 respectively change and preserve the value.
2341 * fixed bug 63: The code walker, part of the implementation of CLOS,
2342 is now better at handling symbol macros.
2343 * bug fix: There is no longer an internal implementation type named
2344 CL:LENGTH. (reported by Raymond Toy)
2345 * bug fix: In macro-like defining macros/special operators the
2346 implicit block does not enclose the lambda list.
2347 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2348 enclosed in parentheses) are not suitable as type specifiers, and
2349 their use properly signals an error now.
2350 * bug fix: An argument count mismatch for a type specifier in code
2351 being compiled no longer causes an unhandled error at compile
2352 time, but signals a compile-time warning.
2353 * fixed simple vector readable printing
2354 * bug fix: DESCRIBE takes more care over whether the class
2355 precedence list slot of a class is bound before accessing it.
2356 (reported by Markus Krummenacker)
2357 * bug fix: FORMATTER can successfully compile pretty-printer format
2358 strings which use variants of the ~* directive inside.
2359 * bug fix: SEARCH now applies its TEST predicate to the elements of
2360 the arguments in the correct order. (thanks to Wolfhard Buss)
2361 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2362 in type inference. (thanks to Robert E. Brown)
2363 * bug fix: Reading in symbols with an explicit package name of ""
2364 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2365 * fixed some bugs revealed by Paul Dietz' test suite:
2366 ** NIL is now allowed as a structure slot name.
2367 ** Arbitrary numbers, not just REALs, are allowed in certain
2368 circumstances in LOOP for-as-arithmetic clauses.
2369 ** Multiple class redefinitions before slot access no longer
2370 causes a type error.
2371 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2372 association between the name and a class.
2373 ** Generic functions with non-standard method-combination and over
2374 five methods all of which return constants no longer return NIL
2375 after the first few invocations. (thanks to Gerd Moellmann)
2376 ** CALL-NEXT-METHOD with no arguments now passes the original
2377 values of the arguments, even in the presence of assignment.
2378 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2380 ** DISASSEMBLE works with closures and funcallable instances.
2381 ** ADD-METHOD now returns the generic function, not the new method.
2382 ** FIND-METHOD signals an error if the lengths of the specializers
2383 is incompatible with the generic function, even if the ERRORP
2385 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2386 which its argument is a member.
2387 ** DEFCLASS only redefines the class named by its class-name
2388 argument if that name is the proper name of the class;
2389 otherwise, it creates a new class.
2390 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2391 of the UNBOUND-SLOT condition to the name of the slot.
2392 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2393 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2394 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2395 SLOT-MAKUNBOUND in the specified fashion.
2397 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2398 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2399 cross-compilation host. As a consequence, we can now bootstrap our
2400 way up to SBCL starting with a bare gcc toolchain and human-readable
2401 source code (first the source to CLISP, then the source to SBCL).
2402 * A contributed module containing a partial implementation of the
2403 simple-streams interface has been included. (thanks to Rudi
2405 * A contributed module implementing the RFC1321 Message Digest
2406 Algorithm, known as MD5, has been included.
2407 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2408 no longer has any effect, as the code controlled by this feature
2409 has been deleted. (As far as we know, no-one has ever built using
2410 this feature, and its semantics were confused in any case).
2411 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2412 work on conditions (as required by the ANSI specification),
2413 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2414 expected behaviour on conditions. Users should note, however,
2415 that such behaviour is not required by the ANSI specification,
2416 and so use of this behaviour may render their code unportable.
2417 * fixed some bugs revealed by Paul Dietz' test suite:
2418 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2420 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2421 ** SXHASH on condition objects no longer returns NIL.
2422 ** :ALLOCATION :CLASS slots are better treated; their values are
2423 updated on class redefinition, and initforms inherited from
2424 superclasses are applied.
2425 ** REMOVE-METHOD returns its generic function argument even when
2426 no method was removed.
2427 ** SHARED-INITIALIZE now initializes the values of the requested
2428 slots, including those with :ALLOCATION :CLASS.
2429 ** ALLOCATE-INSTANCE now works on structure classes defined via
2430 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2432 ** SLOT-EXISTS-P now works on conditions, as well as structures
2434 ** MAKE-LOAD-FORM now has the required methods on
2435 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2436 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2437 keyword, and now implements the SLOT-NAMES argument.
2438 ** methods with &OPTIONAL arguments no longer allow too many
2439 arguments to be passed in the call without error.
2440 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2441 option is consistent with the required arguments of the generic
2442 function lambda list.
2443 * bug fix: REQUIRE accepts a string designator. (Thanks to
2445 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2446 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2447 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2448 * bug fix: The compiler now checks for duplicated variables in macro
2450 * bug fix: SETQ on globals returns the correct value.
2451 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2452 not a COMPILER-ERROR (followed by some other strange error on
2453 choosing the CONTINUE restart).
2454 * bug fix: make.sh and friends are now more consistent in the way that
2455 they look for GNU "make".
2457 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2458 * experimental native threads support (on x86 Linux >=2.4 only).
2459 This is not compiled in by default: you need to add :SB-THREAD to
2460 the target features. See the "Beyond ANSI" chapter of the manual
2462 * fix for longstanding nonANSIism: The old distinction between
2463 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2464 The return value from CL:FIND-CLASS is now a CLOS class, and
2465 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2466 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2467 * An interface to the MetaObject Protocol, as described in Kiczales,
2468 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2469 MIT Press, 1991, is available from the SB-MOP package.
2470 * incompatible change: the SB-PCL package should now be considered
2471 a private implementation detail, and no longer a semi-private MOP
2473 * minor incompatible change: due to rearrangement for threads, the
2474 control stack and binding stack are now allocated at arbitrary
2475 addresses instead of being hardcoded per-port. Users affected by
2476 this probably have to be doing advanced things with shared
2477 libraries, and will know who they are.
2478 * minor incompatible change: Previously, all --eval forms used were
2479 processed with READ before any of them were processed with EVAL.
2480 Now each --eval form is processed with both READ and EVAL before
2481 the next --eval form is processed. (Thus package operations like
2482 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2483 work as the user might reasonably expect.)
2484 * minor incompatible change: *STANDARD-INPUT* is now only an
2485 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2487 * minor incompatible change: Y-OR-N-P is now character-oriented,
2488 not line oriented. Also, YES-OR-NO-P now works without errors.
2489 (thanks to Antonio Martinez)
2490 * sb-aclrepl module improvements: an integrated inspector, added
2491 repl features, and a bug fix to :trace command.
2492 * Known functions, which cannot be open coded by the backend, are
2493 considered to be able to check types of their arguments. (fixing
2494 a bug report by Nathan J. Froyd)
2495 * fixed a bug in computing method discriminating functions: It is
2496 now possible to define methods specialized on classes which have
2497 forward-referenced superclasses. (thanks to Gerd Moellmann)
2498 * fixed evaluation order in optional entries (reported by Gilbert
2500 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2501 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2502 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2503 required-by-AMOP NAME argument, as well as CLASS and
2504 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2505 * fixed bug 20: DEFMETHOD can define methods using names that are
2506 not the proper names of classes to designate class specializers.
2507 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2508 Unix file descriptors, instead of blowing up. (thanks to Antonio
2510 * Garbage collection refactoring: user-visible change is that a
2511 call to the GC function during WITHOUT-GCING will not do garbage
2512 collection until the end of the WITHOUT-GCING. If you were doing
2513 this you were probably losing anyway.
2514 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2515 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2516 TYPEP the latter but not the former.
2517 * The compiler issues a full WARNING for calls to undefined functions
2518 with names from the CL package.
2519 * MAP-INTO for a vector destination is open coded. (reported by
2520 Brian Downing on c.l.l)
2521 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2522 documentation string.
2523 * fixed some bugs revealed by Paul Dietz' test suite:
2524 ** COPY-ALIST now signals an error if its argument is a dotted
2526 ** Condition slots are now accessed more correctly in the presence
2527 of multiple initargs for a given slot.
2528 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2529 exclude restarts of the same name associated with a different
2531 ** DEFCLASS of forward-referenced classes with another
2532 forward-referenced class in the superclasses list no longer
2534 ** Condition slots are now initialized once each, not multiple
2535 times. (thanks to Gerd Moellmann)
2536 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2538 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2539 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2540 arguments contain duplicated elements.
2541 ** RESTART-CASE understands local macros.
2542 ** RESTART-CASE associates exactly its own restarts with a condition.
2543 ** ENDP in safe mode checks its argument to be of type LIST.
2544 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2545 in question is unbound.
2546 ** Optimized MAKE-INSTANCE functions no longer cause internal
2547 assertion failures in the presence of duplicate initargs.
2548 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2549 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2550 propagated even in the ctor optimized implementation of
2552 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2554 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2555 * a better implementation of SXHASH on (simple) bit vectors,
2556 measured both in execution speed and in distribution of results
2557 over the positive fixnums, has been installed. Likewise, a better
2558 implementation of EQUAL for simple bit vectors is now available.
2559 * fixed CEILING optimization for a divisor of form 2^k.
2560 * fixed bug 240 (emitting extra style warnings "using the lexical
2561 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2562 by Antonio Martinez)
2563 * fixed SXHASH, giving different results for NIL depending on type
2564 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2565 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2566 variable. (found by Rolf Wester)
2567 * SBCL does not ignore type declarations for special
2568 variables. (reported by rif on c.l.l 2003-03-05)
2569 * some bug fixes in contrib/sb-aclrepl/
2570 * fixed some bugs revealed by Paul Dietz' test suite:
2571 ** a bug in the CONS type specifier, whereby the CAR and CDR
2572 types got intertwined, has been fixed;
2573 ** the type system is now able to reason about the interaction
2574 between INTEGER and RATIO types more completely;
2575 ** APPEND, [N]REVERSE and NRECONC check that those their
2576 arguments, which must be proper lists, are really so;
2577 ** An array specialized to be unable to hold elements has been
2578 implemented, as required -- yes, really -- by ANSI;
2579 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2580 on malformed property lists;
2582 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2583 * incompatible packaging change: in line with Unix convention,
2584 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2585 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2586 * REQUIRE and PROVIDE are now optionally capable of doing something
2587 useful. See the documentation string for REQUIRE.
2588 * infrastructure for a managed SBCL contrib system: contributed
2589 modules in this release include:
2590 ** the ASDF system definition facility;
2591 ** an interface to the BSD Sockets API;
2592 ** an ACL-like convenience interface to the repl;
2593 (thanks to Kevin Rosenberg)
2594 ** an implementation of ROTATE-BYTE, with efficient implementation
2596 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2597 gives a closer approximation to the right answer than previously.
2598 (thanks to Raymond Toy)
2599 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2600 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2601 optional environment arguments, as required by ANSI.
2602 * fixed bugs in other functions taking environment objects, allowing
2603 calls with an explicit NIL environment argument to be compiled
2605 * fixed bug 228: primary return values from
2606 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2607 COMPILE or FUNCTION.
2608 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2609 :TYPE will no longer signal errors on innocuous objects.
2610 * fixed bug 231b: SETQ is better at respecting type declarations in
2611 the lexical environment.
2612 * fixed a bug in DEFCLASS: classes named by symbols with no or
2613 unprintable packages can now be defined.
2614 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2615 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2616 * fixed compiler failure related to checking types of functions.
2617 (reported by Robert E. Brown)
2618 * the compiler is now much more consistent in its error-checking
2619 treatment of bounding index arguments to sequence functions: in
2620 (SAFETY 3) code, errors will be signalled in almost all cases if
2621 invalid sequence bounding indices are passed to functions defined
2622 by ANSI to operate on sequences.
2623 * fixed a bug in the build procedure: documentation of SBCL-specific
2624 packages is now preserved and available in the final Lisp image.
2625 * lifted FDEFINITION lookup out of loops in the implementation of
2626 many list operations. (thanks to Robert E. Brown)
2627 * fixed a bug in the reader: the #n# reader macro now works for
2628 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2629 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2630 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2631 E. Brown and Tony Martinez respectively)
2632 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2633 SLOT-BOUNDP: in particular, it is now able to optimize them much
2634 better, and is now not vulnerable to having packages renamed.
2635 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2636 always called when a slot is not present in an instance. (thanks
2638 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2639 longer signal an error on unreading a character following EOF on
2640 the previous constituent stream. (thanks to Tony Martinez)
2641 * fixed some bugs revealed by Paul Dietz' test suite:
2642 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2643 not just nonnegative fixnums;
2644 ** the logical bit-array operators such as BIT-AND now accept an
2645 explicit NIL for their "opt-arg" argument (to indicate a
2646 freshly-consed result bit-array);
2647 ** ELT now signals an error on an invalid sequence index in safe
2649 ** the type system is now cleverer about negations of numeric
2650 types, and consequently understands the BIGNUM and RATIO types
2652 ** the type system is now cleverer about the interaction between
2653 INTEGER and RATIO types: while bugs still remain, many more
2654 cases are accurately computed;
2655 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2656 if it is in the last clause;
2657 ** CONSTANTLY now correctly returns a side-effect-free function in
2659 ** DECLARE is no longer treated as a special-operator; in
2660 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2661 * incremented fasl file version number due to the change in the
2662 DEFSTRUCT-SLOT-DESCRIPTION structure.
2664 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2665 * minor incompatible change: code processed by the "interpreter" or
2666 EVAL now has a compilation optimization policy of (DEBUG 2)
2667 (changed from (DEBUG 1)) to improve debuggability of interactive
2668 development, and to allow the use of the debug RETURN command in
2670 * an experimental implementation of the RETURN command for the
2671 debugger has been included. (thanks to Frederik Kuivinen)
2672 * fixed bug 62: constraints were not propagated into a loop.
2673 * fixed bug in embedded calls of SORT (reported and investigated by
2675 * fixed some bugs revealed by Paul Dietz' test suite:
2676 ** printing and reading of arrays with some dimensions having
2677 length 0 (thanks to Gerd Moellmann);
2678 ** BOA constructor with &AUX argument without a default value does
2679 not cause a type error;
2680 ** CONSTANTP now returns true for all self-evaluating objects.
2682 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2683 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2684 accessors that are related by inheritance, as specified in the
2685 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2686 Valtteri Vuorikoski)
2687 * The compiler is now able to inline functions that were defined in
2688 a complex lexical environment (e.g. inside a MACROLET).
2689 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2691 * Support for the upcoming FreeBSD-5.0 release has been included.
2692 (thanks to Dag-Erling Smorgrav)
2693 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2694 effect when it is not in a toplevel context.
2695 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2696 stand a better chance of being correct. (thanks to Gerd
2698 * fixed bug in COERCE, which now signals an error on coercing a
2699 rational to a bounded real type which excludes the expected
2701 * The compiler is now able to derive types more accurately from the
2702 COERCE and COMPILE functions.
2703 * fixed bug 223: functional binding is considered to be constant
2704 only for symbols in the CL package.
2705 * fixed bug 231: SETQ did not check the type of a variable being set
2706 (reported by Robert E. Brown)
2707 * A new optimization for MAKE-INSTANCE has been included, fixing
2708 various bugs (including relating to :ALLOCATION :CLASS slots and
2709 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2711 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2712 ** As required by ANSI, LOOP now disallows anonymous collection
2713 clauses such as COLLECT I in conjunction with aggregate boolean
2714 clauses such as THEREIS (= I 1);
2715 ** LOOP now signals an error when any variable is reused in the
2716 same loop (including the potentially useful construct analogous
2717 to WITH A = 1 WITH A = (1+ A);
2718 ** IT is only a special loop symbol within the first clause of a
2719 conditional loop clause;
2720 ** LOOP with a typed iteration variable over a hashtable now
2721 signals a type error iff it should.
2722 * fixed some other bugs revealed by Paul Dietz' test suite:
2723 ** FILE-STREAM now names the class previously known as FD-STREAM;
2724 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2725 argument) no longer signals an error;
2726 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2727 of the slot symbol, rather than using the current package
2728 ((:CONC-NAME "") continues to intern the slot's name in the
2730 * incremented fasl file version number, because of the incompatible
2731 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2732 of the new implementation of DEFINE-COMPILER-MACRO.
2734 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2735 * Support for building SBCL for MIPS platforms running in
2736 little-endian mode has now been checked in, and basic
2737 functionality on said platforms verified.
2738 * minor incompatible change: PCL now records the pathname of a file
2739 in which methods and the like are defined, rather than its
2741 * minor incompatible change: TRUENAME now considers the truename of
2742 a file naming a directory to be the pathname with :DIRECTORY
2743 component indicating that directory.
2744 * minor incompatible change: a NAMED clause in the extended form of
2745 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2746 reason for the previous behaviour is unclear.
2747 * more systematization and improvement of CLOS and MOP conformance
2748 in PCL (thanks to Gerd Moellman and Pierre Mai):
2749 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2751 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2752 primary methods with no specializers;
2753 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2755 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2756 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2757 FORWARD-REFERENCED-CLASSes; error reporting on
2758 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2760 ** SXHASH on CLOS instances now uses a slot internal to the
2761 instance to return different numbers on distinct instances,
2762 while preserving the same return value through invocations of
2764 ** DEFMETHOD signals errors when methods with longer incongruent
2765 lambda lists are added to generic functions;
2766 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2767 CLASS, as specified in AMOP;
2768 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2769 on the order returned by the primary method for classes of
2770 class STANDARD-CLASS;
2771 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2772 * fixed some bugs shown by Paul Dietz' test suite:
2773 ** DOLIST puts its body in TAGBODY;
2774 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2776 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2777 value producing form;
2778 ** if more variables are given to PROGV than values, extra
2779 variables are bound and made to have no value;
2780 ** NSUBSTITUTE on list arguments gets the right answer with
2782 ** ELT signals an error of type TYPE-ERROR when the index argument
2783 is not a valid sequence index;
2784 ** LOOP signals (at macroexpansion time) an error of type
2785 PROGRAM-ERROR when duplicate variable names are found;
2786 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2787 ** FUNCALL of special-operators now cause an error of type
2789 ** PSETQ now works as required in the presence of side-effecting
2790 symbol-macro places;
2791 ** NCONC accepts any object as its last argument;
2792 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2794 ** loop-for-as-package does not require a package to be explicitely
2796 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2798 * fixed bug 166: compiler preserves "there is a way to go"
2799 invariant when deleting code.
2800 * fixed bug 172: macro lambda lists with required arguments after
2801 &REST arguments now cause an error to be signalled. (thanks to
2803 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2804 bug. (thanks to Matthew Danish)
2805 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2807 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2808 arguments are lexically rebound. (thanks to Gerd Moellmann and
2810 * fixed bug 194: error messages are now more informative when there
2811 is no primary method applicable in a call to a generic
2812 function. (thanks to Gerd Moellmann)
2813 * fixed bug in command line argument checking (thanks to Julian
2815 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2816 (thanks to Matthew Danish)
2817 * incremented fasl file version number, because of the
2818 SXHASH-related changes in the layout of CLOS data structures
2820 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2821 * minor incompatible change: The runtime (the Unix executable named
2822 "sbcl") is now much pickier about the .core files it will load.
2823 Essentially it now requires .core files to descend from the same
2824 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2825 as the runtime does. (The intent is to prevent the crashes which
2826 can occur, and which can even be reported as mysterious failures,
2827 when people patch the sources or change the build parameters
2828 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2829 sbcl and .core files.)
2830 * fixed bug: VALUES-LIST is no longer optimized away.
2831 * fixed bug 142: The FFI conversion of C string values to Lisp
2832 string values no longer conses excessively. (thanks to Nathan
2833 Froyd porting Raymond Toy's fix to CMU CL)
2834 * began to systematize and improve MOP conformance in PCL (thanks to
2835 Nathan Froyd, Gerd Moellman and Pierre Mai):
2836 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2838 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2839 ** FINALIZE-INHERITANCE is now called on class finalization;
2840 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2841 argument precedence order.
2842 * fixed bug 202: The compiler no longer fails on functions whose
2843 derived types contradict their declared type.
2844 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2845 so it can be non-toplevel.
2846 * The fasl file version number has changed (because of the new
2847 implementation of DEFMACRO).
2848 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2849 safe code, that any length requirement by their type-specifier
2850 argument is valid. The exceptions to this are described in bug
2852 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2853 functions now check the types of their inputs as required by ANSI.
2854 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2855 introduced symbol is DECLAREd to be SPECIAL.
2856 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2857 * fixed bug: :COUNT argument to sequence functions may be negative
2858 * fixed bug: body of DO-SYMBOLS may contain declarations
2859 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2860 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2861 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2862 symbol macro only once
2863 * fixed printing of call frame when argument list is unavailable
2864 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2865 * compiler no longer signals WARNING on unknown keyword
2868 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2869 * A beta-quality port to the mips architecture running Linux,
2870 based on the old CMUCL backend, has been made. It has been tested
2871 on a big-endian kernel, and works sufficiently well to be able to
2872 rebuild itself; it has not been tested in little-endian mode.
2873 * fixed an inconsistency between gencgc.c and purify.c which made
2874 dumping/loading .core files unreliable
2875 * fixed bug 120a: The compiler now deals correctly with IFs where
2876 the consequent is the same as the alternative, instead of
2877 misderiving the return type. (thanks to Alexey Dejneka)
2878 * fixed bug 113: Logical pathnames are now dumpable (the logical
2879 host is resolved at load-time, throwing an error if it is not
2881 * fixed bug 174: FORMAT's error message is slightly clearer when a
2882 non-printing character is used in a format directive.
2883 * fixed several bugs in compiler checking of type declarations, i.e.
2884 violations of the Python "declarations are assertions" principle
2885 (thanks to Alexey Dejneka)
2886 * fixed several bugs in PCL's error checking (thanks to Gerd
2888 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2890 * fixed bug in compilation of functions as first class values
2891 (thanks to Antonio Martinez-Shotton)
2892 * The compiler's handling TYPE-ERRORs which it can prove will
2893 inevitably happen at runtime has been cleaned up and corrected
2894 in several ways. (thanks to Alexey Dejneka)
2895 * improved argument type checking for various basic arithmetic
2896 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2897 lavished on them in the past that they can be compiled in many
2898 ways in different special cases
2899 * fixed bug 181: compiler checks validity of user supplied type
2901 * cleaned up code flushing in optimization: Function calls which
2902 should signal errors for safety purposes (e.g. which ANSI says
2903 should signal errors when their arguments are of incorrect type)
2904 are no longer optimized away.
2905 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2906 * incremented fasl file version number, because changes in the
2907 implementation of sequence functions like COERCE caused
2908 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2909 in old inline expansions) to become undefined. (Actually these
2910 changes were later undone, so we might very well be binary
2911 compatible with 0.7.7 after all, but leaving the version number
2912 incremented seemed like the simplest and most conservative
2915 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2916 * An alpha-quality port to the parisc architecture running Linux,
2917 based on the old CMUCL backend, has been made. This, even more so
2918 than the other backends, should be considered still a work in
2919 progress; known problems include that the Linux kernel in 64-bit
2920 mode does not propagate the correct sigcontext structure to
2921 userspace, and consequently SBCL on a parisc64 kernel will not
2923 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2924 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2925 suppressed.) Also now that the compiler is looking at declarations
2926 in the environment, it checks optimization declarations as well,
2927 and suppresses inlining when (> DEBUG SPEED).
2928 * More fixes have been made to treatment of floating point exception
2929 treatment and other Unix signals. In particular, floating point
2930 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2931 * The detection and handling of control stack exhaustion (infinite
2932 or very deeply nested recursion) has changed. Stack exhaustion
2933 detection is now done by write-protecting pages at the OS level
2934 and applies at all optimization settings; when found, a
2935 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2936 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2937 be caught using IGNORE-ERRORS.
2938 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2939 correctly when transforming recursive LABELS functions to LETs.
2940 (thanks to Alexey Dejneka)
2941 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2942 that are names of constants or global variables.
2943 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2944 alien routines with docstrings.
2945 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2946 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2948 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2949 (thanks to Eric Marsden)
2950 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2951 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2952 * Bug fix: The SPARC backend can now compile functions involving
2953 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2954 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2955 to a functions expecting a PATHNAME-DESIGNATOR.
2956 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2957 lambda lists. (thanks to Alexey Dejneka)
2958 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2959 functions so that EXPORTing the name of the class doesn't cause
2960 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2961 to Antonio Martinez for reporting this)
2962 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2963 constant-folded without failing an assertion. (thanks to Einar
2964 Floystad Dorum for reporting this)
2965 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2966 types are now dealt with more correctly by the compiler.
2967 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2968 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2969 behaviour analogous to RENAME-FILE. This puts its behaviour more
2970 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2972 * The fasl file version number has changed again. (because of the
2973 bug fix involving the names of PCL MAKE-INSTANCE functions)
2975 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2976 * bug fix: Floating point exceptions are treated much more
2977 consistently on the x86/Linux and PPC/Linux platforms.
2978 * Array initialization with :INITIAL-ELEMENT is now much faster for
2979 cases when the compiler cannot open code the array creation, but
2980 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2981 array accesses have also seen a speed increase.
2982 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2983 specified. (This was at the root of some bad interactions between
2984 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2986 * bug fix: Internal error arguments for undefined functions are now
2987 computed correctly on the PPC/Linux platform.
2988 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2989 Raymond Toy's patch for CMU CL)
2990 * Support for the Solaris 9 operating environment has been included
2991 (thanks to Daniel Merritt)
2992 * A very ugly but hopefully complete draft of the missing FFI chapter
2993 of the manual has been created by reformatting the corresponding
2994 CMU CL manual chapter into (currently very ugly and incoherent)
2995 DocBook and bringing it up to date for SBCL behavior. Thus, the
2996 manual is now essentially complete, at least by my extreme
2997 once-and-only-once standards, whereby it's acceptable to refer to
2998 the doc strings of SB-EXT functions as the primary documentation.
2999 * The fasl file version number has changed again, due to cleanup of
3000 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3001 is no longer a static symbol.)
3003 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3004 * SBCL now builds with OpenMCL (version 0.12) as the
3005 cross-compilation host; also, more progress has been made toward
3006 bootstrapping under CLISP.
3007 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3009 * bug 158 fixed: The compiler can now deal with integer loop
3010 increments different from 1; fixing this turned out also to fix
3012 * bug 169 fixed: no more bogus warnings about using lexical bindings
3013 despite the presence of perfectly good SPECIAL declarations (thanks
3014 to David Lichteblau)
3015 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3016 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3017 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3019 * bug 180 fixed: Method combination specifications no longer ignore
3020 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3021 * bug fix: Structure type predicate functions now check their argument
3022 count as they should.
3023 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3024 correctly. (thanks to Pierre Mai)
3025 * minor incompatible change: The --noprogrammer option is deprecated
3026 in favor of the new --disable-debugger option, which is very similar.
3027 (The major difference is that it takes effect at a slightly different
3028 time at startup, causing handling of errors in --sysinit and
3029 --userinit files will be affected differently.) The
3030 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3031 been added to allow this functionality to be controlled from ordinary
3032 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3033 maintainers, who might want to run non-interactive scripts to
3034 build SBCL cores which will later be used interactively.)
3035 * minor incompatible change: The LOAD function no longer, when given
3036 a wild pathname to load, loads all files matching that pathname.
3037 Instead, an error of type FILE-ERROR is signalled.
3039 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3040 * bug 147 fixed: The compiler preserves its block link/count
3041 invariants more correctly now so that it doesn't crash. (thanks
3043 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3045 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3046 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3047 no-value-for-this-character as NIL (as specified by ANSI).
3048 * HOST-NAMESTRING on physical pathnames now returns a string that is
3049 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3050 (thanks to Christophe Rhodes)
3051 * The Alpha port handles icache flushing more correctly. (thanks to
3053 * More progress has been made toward bootstrapping under CLISP. (thanks
3054 to Christophe Rhodes)
3055 * The fasl file format has changed again, because dynamic loading
3056 on OpenBSD (which has non-ELF object files) motivated some cleanups
3057 in the way that foreign symbols are transformed and passed around.
3058 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3059 is no longer treated as whitespace by the reader, but instead as
3060 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3061 |A
\7fB|, instead of A as it used to.
3063 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3064 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3065 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3066 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3067 this as of 0.7.1.45, but was left out of the previous news section
3068 (thanks to Dan Barlow)
3069 * SBCL now runs on the Solaris operating system on SPARC architectures
3070 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3071 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3072 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3073 * SPARC backend cleanups, allowing builds of cores optimized for V8
3074 and V9 SPARCS, and also emission of code targeted to a particular
3075 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3077 * SBCL is closer to bootstrapping under CLISP, thanks to various
3078 fixes by Christophe Rhodes.
3079 * The fasl file format has changed again, to allow the compiler's
3080 INFO database to support symbol macros.
3081 * The user manual (in doc/) is formatted into HTML more nicely.
3082 (thanks to coreythomas)
3083 * The system is smarter about SUBTYPEP relationships, especially
3084 those involving NOT types (including types such as ATOM which are
3085 represented internally using NOT types). Thus SUBTYPEP is less
3086 likely to return (VALUES NIL NIL) in general, and in particular
3087 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3089 * The fasl file format has changed again, because the internal
3090 representation of types now includes a new slot to support the new
3091 SUBTYPEP-of-NOT-types logic.
3092 * (not a change in the main branch of SBCL, but a related prototype
3093 which can hopefully be merged into the main branch of SBCL in the
3094 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3095 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3096 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3097 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3098 dispatch macro character combinations. (thanks to Alexey Dejneka)
3099 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3100 that superficially look like logical namestrings correctly.
3101 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3103 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3104 default supplied-p) for &optional and &key arguments. (thanks to
3107 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3108 * incompatible change: The compiler is now less aggressive about
3109 tail call optimization, doing it only when (> SPACE DEBUG) or
3110 (> SPEED DEBUG). (This is an incompatible change because there are
3111 programs which relied on the old CMU-CL-style behavior to optimize
3112 away their unbounded recursion which will now die of stack overflow.)
3113 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3114 for non-GENCGC systems has been increased to 20M (since that
3115 seems much closer to the likely performance optimum for modern
3116 systems than the old 4M value was)
3117 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3118 and *DEBUG-PRINT-LEVEL*
3119 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3120 of CMU CL's support for SPARC, and various endianness and other
3121 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3122 * new syntactic sugar for the Unix command line: --load foo.bar is now
3123 an alternate notation for --eval '(load "foo.bar")'.
3125 ** The system now detects stack overflow and handles it gracefully,
3126 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3127 optimization settings. (This is a good thing in general, and
3128 its introduction in this version should be particularly timely
3129 for anyone whose code fails because of suppression of tail
3131 ** The system now hunts for the C variable "environ" in a more
3132 devious way, to avoid segfaults when the C library version differs
3133 between compile time and run time. (thanks to Christophe Rhodes)
3134 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3135 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3136 ** The compiler no longer issues bogus style warnings for undefined
3137 classes in the same source file as the DEFCLASSes which defined
3138 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3140 ** fixes in CONDITION class precedence list for undefined function
3141 errors (thanks to Alexei Dejneka)
3142 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3143 correctly. (thanks to Dan Barlow)
3144 ** portability fixes aiming at bootstrapping under CLISP (thanks
3145 to Dave McDonald and Christophe Rhodes)
3146 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3147 ** fixes in type translation and and type inference (thanks to
3149 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3150 ** various fixes in the new ports (thanks to Dan Barlow)
3151 * several changes related to debugging:
3152 ** suppression of tail recursion, as noted above
3153 ** stack overflow detection, as noted above
3154 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3155 is now the default. (For some time encapsulation has been more
3156 reliable than the breakpoint-based :ENCAPSULATE NIL
3157 implementation, at least on X86 systems; and I just noticed that
3158 encapsulation also seems closer to the spirit of the ANSI
3161 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3163 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3164 up properly again. (There was a packaging bug in 0.7.0 which
3165 left their definitions in SB-SYS::LOAD-FOREIGN and
3166 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3167 vital for most things which interface to C-level interfaces,
3168 like extensions working with sockets or databases or
3169 Perl-compatible regexes or whatever, and the need to fix
3170 this bug is the main reason that 0.7.1 was released so
3172 ** DEFGENERIC is now choosier about the methods it redefines, so that
3173 reLOADing a previously-LOADed file containing DEFGENERICs does
3174 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3175 cycle now works as it should. (thanks to Alexey Dejneka)
3176 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3177 fixed by Christophe Rhodes. (He actually submitted this patch
3178 months ago, and I delayed until after 0.7.0.)
3179 ** Bug 111 (internal compiler confusion about runtime checks on
3180 FUNCTION types) was fixed by Alexey Dejneka.
3181 * Some internal cleanups (getting rid of variables which aren't
3182 needed now that the byte interpreter is gone) caused the fasl
3183 file format number to change again.
3185 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3186 * major incompatible change: The default fasl file extension, i.e. the
3187 default extension for files produced by COMPILE-FILE, has changed
3188 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3190 ** There are many changes in the implementation of the compiler.
3191 SBCL is now essentially a compiler-only implementation of ANSI
3192 Common Lisp. EVAL still "interprets" a few special cases, but
3193 almost all the interesting cases are handled by creating
3194 a LAMBDA expression, calling COMPILE on it, then calling
3195 FUNCALL on the result.
3196 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3197 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3198 Since the code is newer, there might still be some new bugs
3199 (though not as many as before Martin Atzmueller's fixes:-). But
3200 the new code is substantially simpler and clearer, and hopefully
3201 any remaining bugs will be simpler, less fundamental, and more
3202 fixable then the bugs in the old code.
3203 ** The revised compiler is still a little unsteady on its feet.
3205 *** The debugging information it produces (particularly the names
3206 of FUNCTION objects) is sometimes much less useful than what
3207 the old compiler produced.
3208 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3209 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3210 within a MACROLET) has been temporarily weakened.
3211 ** There are new compiler optimizations for various functions:
3212 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3213 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3214 *** the math functions TRUNCATE, FLOOR, and CEILING
3215 *** the function-of-all-trades COERCE
3216 Mostly these should be transparent, but there's one
3217 potentially-annoying problem (bug 117): when the compiler
3218 inline-expands a function and does type analysis on the result,
3219 it can create control paths which have type mismatches, and
3220 when it can't prove that those control paths aren't taken,
3221 it will issue WARNINGs about the type mismatches. This is
3222 a particular problem in practice for the new sequence functions.
3223 It's not clear how this should be fixed, and for now, a
3224 workaround is given in the entry for 117 in the BUGS file.
3225 ** (Because of the interaction between the two previous items --
3226 occasional inlining problems and new inline expansions -- some
3227 of the new sequence function optimizations won't really kick in
3228 completely until debugging information, and then inlining, are
3229 straightened out in some future version.)
3230 * minor incompatible changes:
3231 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3232 DIRECTORY no longer implicitly promotes NIL slots of its
3233 pathname argument to :WILD. In particular, when you ask for the
3234 contents of a directory (which you used to be able to do without
3235 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3236 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3237 ** changes in behavior that ANSI explicitly defines to be
3238 implementation dependent:
3239 *** The new compiler-only implementation still conforms with ANSI,
3240 but acts a little different than before. Besides the obvious
3241 changes in performance tradeoffs (that the cost per form passed
3242 to EVAL has gone up, and the cost per form executed by EVAL
3243 has gone down), the behavior of the system changes a little
3244 because there are no longer any interpreted function objects.
3245 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3246 e.g. doing COMPILE on the output of interactive DEFUN is
3248 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3250 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3251 has changed from (:CL) to NIL.
3252 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3253 e.g. #\Newline and #\Tab, don't have names specified in the
3254 ANSI Common Lisp standard, is now based on their ASCII symbolic
3255 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3256 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3257 are no longer used for output.
3258 ** changes in internal implementation constants:
3259 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3260 4 million. (If your application spends a lot of time GCing and
3261 you have a lot of RAM, you might want to experiment with
3262 increasing it even more.)
3263 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3264 However, almost all old code should still continue to work without
3265 immediate update, as SB-C-CALL is now a (deprecated) nickname
3267 ** Old operator names in the style DEF-FOO are now deprecated in
3268 favor of new corresponding names DEFINE-FOO, for consistency with
3269 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3270 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3271 internal symbols, but a few supported extensions like
3272 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3273 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3274 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3275 etc. as you get deeper into recursive calls to the debugger
3276 command loop, instead of the old "5]", "5]]", "5]]]"
3277 sequence. (I was motivated to do this when squabbles between
3278 ILISP and SBCL left me very deeply nested in the debugger. In the
3279 short term, this change will probably provoke more ILISP/SBCL
3280 squabbles, but hopefully it will be an improvement in the long run.)
3281 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3282 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3283 function, since declaiming return types involving aliens is
3284 (1) annoyingly messy to do by hand and (2) vital to efficient
3285 compilation of code which calls such functions.
3286 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3287 longer reexported by the SB-EXT package. They're solely useful
3288 for alien code, so it seems more logical that you should get
3289 them from the SB-ALIEN package, not in SB-EXT.
3290 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3291 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3292 features. Instead, the code that they used to control is always
3293 built into the system.
3294 * many other bug fixes
3295 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3296 advantage of the new EVAL-WHEN stuff and to clean them up in
3297 general, and they are now more ANSI-compliant in a number of
3298 ways. Martin Atzmueller is responsible for a lot of this.
3299 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3301 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3302 *** correct ERROR type for various file operations
3303 *** some fixes for Lisp streams
3304 *** DEFMETHOD syntax checking
3305 *** changing old weird representation of debug information as
3306 strings (which, among their other deficiencies, don't transform
3307 correctly when you rename packages, and don't change their
3308 print representation when you change things like *PACKAGE*
3309 and *PRINT-LENGTH*) to symbols and lists of symbols
3310 He also made several improvements and fixed several bugs in DESCRIBE.
3311 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3313 *** misbehavior of WRITE-STRING/WRITE-LINE
3314 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3315 and several other LOOP problems as well
3316 *** DIRECTORY when similar filenames are present
3317 *** DEFGENERIC with :METHOD options
3318 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3319 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3320 *** argument ordering in FIND with :TEST option
3321 *** mishandled package designator argument in APROPOS-LIST
3322 *** various problems in the backquote readmacro
3323 *** a bug in APROPOS
3324 *** probably some others that I'm not describing very well here,
3325 since the CVS log documents them by reference to sbcl-devel
3326 messages, and the SourceForge archives aren't working well.:-(
3327 ** Dan Barlow improved the Alpha port (and is making progress on the
3328 PPC port, for those of you who think different).
3329 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3330 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3331 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3332 continues to work on the SPARC port (for those of you in a position
3333 to look down upon our little PC-compatible boxes from a great height).
3334 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3335 and uses that copy, rather than the current dynamic value, when
3336 it's trying to decide whether to truncate output. Thus e.g.
3337 (let ((*print-lines* 50))
3338 (pprint-logical-block (stream nil)
3340 (let ((*print-lines* 8))
3341 (print (aref possiblybigthings i) stream)))))
3342 should now truncate the logical block only at 50 lines, instead of
3343 often truncating it at 8 lines, as it did before.
3344 * The doc/cmucl/ directory, containing old CMU CL documentation
3345 from the time of the fork, is no longer part of the base system.
3346 SourceForge has shut down its anonymous FTP service, and with it
3347 my original plan for distributing the old CMU CL documentation
3348 there. For now, if you need these files you can download an old
3349 SBCL source release and extract them from it.
3350 * The fasl file version number changed again, for dozens of reasons,
3351 some of which are apparent above.
3353 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3354 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3355 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3356 patch, so that DISASSEMBLE output is much nicer.
3357 * The code in the SB-PROFILE package now seems reasonably stable.
3358 I still haven't decided what the final interface should look like
3359 (I'd like PROFILE to interact cleanly with TRACE, since both
3360 facilities use function encapsulation) but if you have a need
3361 for profiling now, you can probably use it successfully with
3362 the current CMU-CL-style interface.
3363 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3364 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3365 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3366 link now returns the dangling link itself, and for similar
3367 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3368 link itself. (In these cases the old code signalled an error and
3369 looped endlessly, respectively.) Thus, DIRECTORY now works even
3370 in the presence of dangling and cyclic symbolic links.
3371 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3372 is now a supported extension again, since the consensus on
3373 sbcl-devel was that it can be useful for ordinary development
3374 work, not just for debugging SBCL itself.
3375 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3376 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3377 that currently-defined functions might be redefined later with
3378 different return types.
3379 * Hash tables can be printed readably, as inspired by CMU CL code
3380 of Eric Marsden and SBCL code of Martin Atzmueller.
3381 * better error handling in CLOS method combination, thanks to
3382 Martin Atzmueller porting Pierre Mai's CMU CL patches
3383 * more overflow fixes for >16Mbyte I/O buffers
3384 * A bug in READ has been fixed, so that now a single Ctrl-D
3385 character suffices to cause end-of-file on character streams.
3386 In particular, now you only need one Ctrl-D at the command
3387 line (not two) to exit SBCL.
3388 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3390 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3391 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3392 does the right thing.
3393 * The implementation of some type tests, especially for CONDITION
3394 types, is now tidier and maybe faster, due to CMU CL code
3395 originally by Douglas Crosher, ported by Martin Atzmueller.
3396 * Some math functions have been fixed, and there are new
3397 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3398 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3399 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3400 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3401 likely to be built into sbcl-0.7.0.)
3402 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3403 CL, ported to SBCL by Martin Atzmueller)
3404 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3405 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3406 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3407 * There's a new slam.sh hack to shorten the edit/compile/debug
3408 cycle for low-level changes to SBCL itself, and a new
3409 :SB-AFTER-XC-CORE target feature to control the generation of
3410 the after-xc.core file needed by slam.sh.
3411 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3412 COMPILE-FILE is no longer supported, so that now every function
3413 gets an entry point, so that block compilation looks a little
3414 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3415 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3416 returns the number of bytes consed since the system started,
3417 rather than the number consed since the first time the function
3418 was called. (The new definition parallels ANSI functions like
3419 CL:GET-INTERNAL-RUN-TIME.)
3420 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3421 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3422 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3423 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3424 * Fasl file version numbers are now independent of the target CPU,
3425 since historically most system changes which required version
3426 number changes have affected all CPUs equally. Similarly,
3427 the byte fasl file version is now equal to the ordinary
3430 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3431 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3432 is no longer recognized. I apologize for this, because it was
3433 listed in SB-EXT as a supported extension, but I found that
3434 its existing behavior was poorly specified, as well as incorrectly
3435 specified, and it looked like too much of a mess to straighten it
3436 out. I have enough on my hands trying to get ANSI stuff to work..
3437 * many patches ported from CMU CL by Martin Atzmueller, with
3438 half a dozen bug fixes in pretty-printing and the debugger, and
3439 half a dozen others elsewhere
3440 * fixed bug 13: Floating point infinities are now supported again.
3441 They might still be a little bit flaky, but thanks to bug reports
3442 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3443 as flaky as they were.
3444 * The --noprogrammer command line option is now supported. (Its
3445 behavior is slightly different in detail from what the old man
3446 page claimed it would do, but it's still appropriate under the
3447 same circumstances that the man page talks about.)
3448 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3449 are now supported, and enabled by default. Thus, the compiler can
3450 handle many floating point and complex operations much less
3451 inefficiently. (Thus e.g. you can implement a complex FFT
3453 * The compiler now detects type mismatches between DECLAIM FTYPE
3454 and DEFUN better, and implements CHECK-TYPE more correctly, and
3455 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3456 thanks to patches from Martin Atzmueller.
3457 * various fixes to make the cross-compiler more portable to
3458 ANSI-conforming-but-different cross-compilation hosts (notably
3459 Lispworks for Windows, following bug reports from Arthur Lemmens)
3460 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3461 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3462 fixed thanks to Pierre Mai's CMU CL patches.
3463 * fixes to keep the system from overflowing internal counters when
3464 it tries to use i/o buffers larger than 16M bytes
3465 * fixed bug 45a: Various internal functions required to support
3466 complex special functions have been merged from CMU CL sources.
3467 (When I was first setting up SBCL, I misunderstood a compile-time
3468 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3469 * improved support for type intersection and union, fixing bug 12
3470 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3471 more obscure bugs as well
3472 * some steps toward byte-compiling non-performance-critical
3473 parts of the system, courtesy of patches from Martin Atzmueller
3474 * Christophe Rhodes has made some debian packages of sbcl at
3475 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3476 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3477 stable, but are nonetheless usable. When he's ready, I'd be happy
3478 to add them to the SourceForge "File Releases" section. (And if
3479 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3480 * new fasl file format version number (because of changes in
3481 internal representation of (OR ..) types to accommodate the new
3482 support for (AND ..) types, among other things)
3484 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3485 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3487 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3489 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3490 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3491 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3492 * DESCRIBE now works on structure objects again.
3493 * Most function call argument type mismatches are now handled as
3494 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3495 know whether the function will be redefined before the call is
3496 executed. (The compiler could flag local calls with full WARNINGs,
3497 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3498 it doesn't keep track of enough information to know whether calls
3499 are local in this sense.)
3500 * Compiler output is now more verbose, with messages truncated
3501 later than before. (There should be some supported way for users
3502 to override the default verbosity, but I haven't decided how to
3503 provide it yet, so this behavior is still controlled by the internal
3504 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3505 src/compiler/ir1util.lisp.)
3506 * Fasl file format version numbers have increased again, because
3507 support for the Gray streams extension changes the layout of the
3508 system's STREAM objects.
3509 * The Gray subclassable streams extension now works, thanks to a
3510 patch from Martin Atzmueller.
3511 * The full LOAD-FOREIGN extension (not just the primitive
3512 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3513 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3514 but like most other programs, it defaults to copying the Unix
3515 environment from the original process instead of starting the
3516 new process in an empty environment.
3517 * Extensions which manipulate the Unix environment now support
3518 an :ENVIRONMENT keyword option which doesn't smash case or
3519 do other bad things. The CMU-CL-style :ENV option is retained
3520 for porting convenience.
3521 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3522 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3524 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3526 * A patch from Martin Atzmueller seems to have solved the SIGINT
3527 problem, and as far as we know, signal-handling now works cleanly.
3528 (If you find any new bugs, please report them!)
3529 * The system no longer defaults Lisp source file names to types
3530 ".l", ".cl", or ".lsp", but only to ".lisp".
3531 * The compiler no longer uses special default file extensions for
3532 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3533 seems to expect a single default extension for all compiled code,
3534 and there's no compelling reason to try to stretch the standard
3535 to allow two different extensions.) Instead, byte-compiled files
3536 default to the same extension as native-compiled files.
3537 * Fasl file format version numbers have increased again, because
3538 a rearrangement of internal implementation packages made some
3539 dumped symbols in old fasl files unreadable in new cores.
3540 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3541 many fewer weird special cases.
3542 * Bug #17 (differing COMPILE-FILE behavior between logical and
3543 physical pathnames) has been fixed, and some related misbehavior too,
3544 thanks to a patch from Martin Atzmueller.
3545 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3546 by Tim Moore, ported to SBCL by Martin Atzmueller.
3547 * Martin Atzmueller fixed several filesystem-related problems,
3548 including bug #36, in part by porting CMU CL patches, which were
3549 written in part by Paul Werkowski.
3550 * More compiler warnings in src/runtime/ are gone, thanks to
3551 more patches from Martin Atzmueller.
3552 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3555 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3557 * DESCRIBE now works on CONDITION objects.
3558 * The debugger now handles errors which arise when trying to print
3559 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3561 * The build system now uses an additional file, customize-target-features.lisp,
3562 to allow local modifications to the target *FEATURES* list. (The point of
3563 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3564 debugging features enabled, without having to worry about propagating it
3565 into everyone's system when I do a "cvs update".) When no
3566 customize-target-features.lisp file exists, the target *FEATURES* list
3567 should be constructed the same way as before.
3568 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3569 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3570 warn about behavior which is undefined under the ANSI spec. Note: This
3571 is specified by ANSI, but it's not very popular with programmers.
3572 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3573 macro in the SBCL sources for an example of a workaround which you
3574 might use to make portable ANSI-standard code which does what you want.
3575 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3576 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3577 when it's used as a non-toplevel form. (This is required in order
3578 to implement the DEFCONSTANT-EQX macro.)
3579 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3580 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3581 funny things, due to bugs in the implementation of EVAL-WHEN
3582 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3583 non-toplevel DEFCONSTANTs are uncommon.)
3584 * The core file version number and fasl file version number have been
3585 incremented, because the old noncompliant DEFCONSTANT behavior involved
3586 calling functions which no longer exist, and because I also took the
3587 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3588 * fixed bug 1 (error handling before read-eval-print loop starts), and
3589 redid debugger restarts and related debugger commands somewhat while
3591 ** The QUIT debugger command is gone, since it did something
3592 rather different than the SB-EXT:QUIT command, and since it never
3593 worked properly outside the main toplevel read/eval/print loop.
3594 Invoking the new TOPLEVEL restart provides the same functionality.
3595 ** The GO debugger command is also gone, since you can just invoke
3596 the CONTINUE restart directly instead.
3597 ** The TOP debugger command is also gone, since it's redundant with the
3598 FRAME 0 command, and since it interfered with abbreviations for the
3600 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3602 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3603 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3604 some porting work by Martin Atzmueller)
3605 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3606 with a boatload of patches which he ported to SBCL. Now that those
3608 ** The system tries to make sure that its low-priority messages
3609 are prefixed by semicolons, to help people who like to use
3610 syntax highlighting in their ILISP buffer. (This patch
3611 was originally due to Raymond Toy.)
3612 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3613 patches originally written by Raymond Toy.
3614 ** The compiler understands coercion between single-value and
3615 multiple-VALUES type expressions better, getting rid of some very
3616 weird behavior, thanks to patches originally by Robert MacLachlan
3617 and Douglas Crosher.
3618 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3619 lambda lists, thanks to a patch originally by Pierre Mai.
3620 ** The system no longer bogusly warns about "abbreviated type
3622 ** The compiler gets less confused by inlining and RETURN-FROM,
3623 thanks to some patches originally by Tim Moore.
3624 ** The system no longer hangs when dumping circular lists to fasl
3625 files, thanks to a patch originally from Douglas Crosher.
3626 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3627 undefined function error.
3628 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3629 in structure slot initforms) for now, documented workaround instead:-|
3630 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3631 * fixed bug 5: added stubs for various Gray stream functions called
3632 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3633 installed, at least appropriate type errors are generated
3634 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3635 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3636 consistently in DEFMETHOD forms.
3637 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3638 it doesn't seem to affect SBCL after all
3639 * The C runtime system now builds with better optimization and many
3640 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3642 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3644 * The system is now under CVS at SourceForge (instead of the
3645 CVS repository on my home machine).
3646 * The new signal handling code has been tweaked to treat register
3647 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3648 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3649 downstream, e.g. in debug-int.lisp, has implicit dependencies
3650 on the unsignedness of integer representation of machine words,
3651 and that caused the system to bomb out with infinite regress
3652 when trying to recover from type errors involving signed values,
3653 e.g. (BUTLAST '(1 2 3) -1).)
3654 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3655 (This was one of the bugs Peter Van Eynde reported back in July.)
3656 * The system now uses code inspired by Colin Walters' O(N)
3657 implementation of MAP (from the cmucl-imp@cons.org mailing
3658 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3659 inline the MAP operation, and there is more than one
3660 sequence argument to the MAP call (so that it can't just
3661 do ETYPECASE once and for all based on the type of the
3662 single sequence argument). (The old non-inline implementation
3663 of the general M-argument sequence-of-length-N case required
3664 O(M*N*N) time when any of the sequence arguments were LISTs.)
3665 * The QUIT :UNIX-CODE keyword argument has been renamed to
3666 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3667 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3669 * Raymond Wiker's patches to port dynamic loading from Linux to
3670 FreeBSD have been added.
3671 * The BUGS file is now more nearly up to date, thanks in large part
3672 to Martin Atzmueller's review of it.
3673 * The debugger now flushes standard output streams before it begins
3674 its output ("debugger invoked" and so forth).
3675 * The core version number and fasl file version number have both
3676 been incremented, because of incompatible changes in the layout
3678 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3679 used to not be called for a saved Lisp image.)
3680 * Martin Atzmueller's version of a patch to fix a compiler crash,
3681 as posted on sbcl-devel 13 September 2000, has been installed.
3682 * Instead of installing Martin Atzmueller's patch for the
3683 compiler transform for SUBSEQ, I deleted the compiler transform,
3684 and transforms for some similar consing operations.
3685 * A bug in signal handling which kept TRACE from working on OpenBSD
3687 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3688 away by constant folding
3689 * The system now defines its address space constants in one place
3690 (in the Lisp sources), and propagates them automatically elsewhere
3691 (through GENESIS and the sbcl.h file). Therefore, patching the
3692 address map is less unnecessarily tedious and error-prone. The
3693 Lisp names of address space constants have also been systematized.
3694 * CVS tags like dollar-Header-dollar have been removed from
3695 the sources, because they have never saved me trouble and
3696 they've been source of trouble working with patches and other
3697 diff-related operations.
3698 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3699 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3701 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3703 * The system has been ported to OpenBSD.
3704 * The system now compiles with a simple "sh make.sh" on the systems
3705 that it's supported on. I.e., now you no longer need to tweak
3706 text in the target-features.lisp-expr and symlinks in src/runtime/
3707 by hand, the make.sh takes care of it for you.
3708 * The system is no longer so grossly inefficient when compiling code
3709 involving vectors implemented as general (not simple) vectors (VECTOR T),
3710 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3711 which dares to use the various sequence functions on non-simple
3712 vectors, takes less of a performance hit.
3713 * There is now a primitive type predicate VECTOR-T-P
3714 to test for the (VECTOR T) type, so that e.g.
3715 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3716 can now be compiled with some semblance of efficiency. (The old code
3717 turned the type declaration into a full call to %TYPEP at runtime!)
3718 * AREF on (VECTOR T) is still not fast, since it's still compiled
3719 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3720 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3721 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3722 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3723 without making full calls to SUBTYPEP at runtime.
3724 (Some analogous efficiency issues for non-simple vectors specialized to
3725 element types other than T, or for non-simple multidimensional arrays,
3726 have not been addressed. They could almost certainly be handled the
3727 same way if anyone is motivated to do so.)
3728 * The changes in array handling break binary compatibility, so
3729 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3730 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3731 instead of (VALUES T T).
3732 * By following the instructions that Dan Barlow posted to sbcl-devel
3733 on 2 July 2000, I was able to enable primitive dynamic object
3734 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3735 functionality is not implemented (since it calls ld to resolve
3736 library references automatically, requiring RUN-PROGRAM for its
3737 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3738 try to resolve library references) is now supported.
3739 * The system now flushes the standard output streams when it terminates,
3740 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3741 them at several other probably-convenient times, e.g. in each pass of
3742 the toplevel read-eval-print loop, and after evaluating a form given
3743 as an "--eval" command-line option. (These changes were motivated by a
3744 discussion of stream flushing issues on cmucl-imp in August 2000.)
3745 * The source transform for TYPEP of array types no longer assumes
3746 that an array whose element type is a not-yet-defined type
3747 is implemented as an array of T, but instead punts, so that the
3748 type will be interpreted at runtime.
3749 * There is now some support for cross-compiling in make.sh: each of
3750 the phases of make.sh has its own script. (This should be transparent
3751 to people doing ordinary, non-cross-compile builds.)
3752 * Since my laptop doesn't have hundreds of megabytes of memory like
3753 my desktop machine, I became more motivated to do some items on
3754 my to-do list in order to reduce the size of the system a little:
3755 ** Arrange for various needed-only-at-cold-init things to be
3756 uninterned after cold init. To support this, those things have
3757 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3758 symbols with such names are now uninterned after cold init).
3759 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3760 fasl files for cold load.
3761 ** Remove the old compiler structure pooling code (which used to
3762 be conditional on the target feature :SB-ALLOC) completely.
3763 ** Redo the representation of some data in cold init to be more compact.
3764 (I also looked into supporting byte compiled code at bootstrap time,
3765 which would probably reduce the size of the system a lot, but that
3766 looked too complicated, so I punted for now.)
3767 * The maximum signal nesting depth in the src/runtime/ support code has
3768 been reduced from 4096 to 256. (I don't know any reason for the very
3769 large old value. If the new smaller value turns out to break something,
3770 I'll probably just bump it back up.)
3771 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3773 * Many, many bugs reported by Peter Van Eynde have been added to
3774 the BUGS list; some have even been fixed.
3775 * While enabling dynamic object file loading, I tried to make the
3776 code easier to understand, renaming various functions and variables
3777 with less ambiguous names, and changing some function calling
3778 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3779 * While trying to figure out how to do the OpenBSD port, I tried to
3780 clean up some of the code in src/runtime/. In particular, I dropped
3781 support for non-POSIX signal handling, added various comments,
3782 tweaked the code to reduce the number of compilation warnings, and
3783 renamed some files to increase consistency.
3784 * To support the new automatic configuration functionality in make.sh,
3785 the source file target-features.lisp-expr has been replaced with the
3786 source file base-target-features.lisp-expr and the machine-generated
3787 file local-target-features.lisp-expr.
3788 * fixed a stupid quoting error in make.sh so that using CMU CL
3789 "lisp -batch" as cross-compilation host works again
3791 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3793 * DESCRIBE no longer tries to call itself recursively to describe
3794 bound/fbound values, so that it no longer fails on symbols which are
3795 bound to themselves (like keywords, T, and NIL).
3796 * DESCRIBE now works on generic functions.
3797 * The printer now prints less-screwed-up representations of closures
3798 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3799 * A private symbol is used instead of the :EMPTY keyword previously
3800 used to mark empty slots in hash tables. Thus
3801 (DEFVAR *HT* (MAKE-HASH-TABLE))
3802 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3803 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3804 now does what ANSI says that it should. (You can still get
3805 similar noncompliant behavior if bang on the hash table
3806 implementation with all the symbols you get back from
3807 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3808 This breaks binary compatibility, since tests for equality to
3809 :EMPTY are wired into things like the macroexpansion of
3810 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3812 * There's now a minimal placeholder implementation for CL:STEP,
3813 as required by ANSI.
3814 * An obscure bug in the interaction of the normal compiler, the byte
3815 compiler, inlining, and structure predicates has been patched
3816 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3817 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3819 * Missing ordinary arguments in a macro call are now detected even
3820 when the macro lambda list contains &KEY or &REST.
3821 * The debugger no longer complains about encountering the top of the
3822 stack when you type "FRAME 0" to explicitly instruct it to go to
3823 the top of the stack. And it now prints the frame you request even
3824 if it's the current frame (instead of saying "You are here.").
3825 * As specified by ANSI, the system now always prints keywords
3826 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3828 * The default initial SIZE of HASH-TABLEs is now smaller.
3829 * Type information from CLOS class dispatch is now propagated
3830 into DEFMETHOD bodies, so that e.g.
3831 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3833 is now basically equivalent to
3834 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3835 (DECLARE (TYPE SINGLE-FLOAT X))
3837 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3838 operation, without having to do run-time type dispatch.
3839 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3840 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3841 * Since I don't seem to be making big file reorganizations very often
3842 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3843 is overflowing my ability to conveniently back them up), I've finally
3844 checked the system into CVS. (The CVS repository is on my home system,
3845 not at SourceForge -- putting it on SourceForge might come later.)
3846 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3847 high-level GC-NOTIFY-FOO functions send their output. (There's
3848 still very little control of where low-level verbose GC functions
3849 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3850 less than it used to -- the GC-NOTIFY-FOO functions are now under
3851 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3852 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3853 in only one place in the source code, and propagates it automatically
3854 everywhere that it's needed. Thus e.g. when I bump the version from
3855 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3856 * The C source files now include boilerplate legalese and documentation
3857 at the head of each file (just as the Lisp source files already did).
3858 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3859 to his page will be replaced with a link to his new CLiki service.
3861 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3863 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3864 * The build process now looks for GNU make under the default name "gmake",
3865 instead of "make" as it used to. If GNU make is not available as "gmake"
3866 on your system, you can change this default behavior by setting the
3867 GNUMAKE environment variable.
3868 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3869 can build without error under CMU CL.
3871 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3873 * There is now a partial SBCL user manual (with some new text and some
3874 text cribbed from the CMU CL manual).
3875 * The beginnings of a profiler have been added (starting with the
3876 CMU CL profiler and simplifying and cleaning up). Eventually the
3877 main interface should be through the TRACE macro, but for now,
3878 it's still accessed through vaguely CMU-CL-style functions and macros
3879 exported from the package SB-PROFILE.
3880 * Some problems left over from porting CMU CL to the new
3881 cross-compilation bootstrap process have been cleaned up:
3882 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3883 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3884 part when getting rid of the compiler *BACKEND* stuff.)
3885 ** The value of *NULL-TYPE* was screwed up, because it was
3886 being initialized before the type system knew the final
3887 definition of the 'NULL type. This screwed up several key
3888 optimizations in the compiler, causing inefficiency in all sorts
3889 of places. (I found it because I wanted to understand why
3890 GET-INTERNAL-RUN-TIME was consing.)
3891 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3892 PROCLAIM FTYPE information. Unfortunately this broke binary
3893 compatibility again, since now the forms output by DEFGENERIC
3894 to refer to functions which didn't exist in 0.6.3.
3895 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3896 can use the new (as of 0.6.3) transform for SOME into MAP into
3898 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3899 values to (INTEGER 0 1000000), so that the time code will no longer
3900 occasionally get blown up by Linux returning 1000000 microseconds
3901 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3902 its output conform to the ANSI spec. (Alas, this makes its output
3903 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3904 * A full call to MAP NIL with a single sequence argument no longer conses.
3905 * fixes to problems pointed out by Martin Atzmueller:
3906 * The manual page no longer talks about multiprocessing as though
3907 it were currently supported.
3908 * The ILISP support patches have been removed from the distribution,
3909 because as of version 5.10.1, ILISP now supports SBCL without us
3910 having to maintain patches.
3911 * added a modified version of Raymond Toy's recent CMU CL patch for
3912 EQUALP comparison of HASH-TABLE
3914 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3916 * The system still can't cross-compile itself with
3917 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3918 entails), but at least it can compile more of itself that way
3919 than it used to be able to, and various buglets which were uncovered
3920 by trying to cross-compile itself that way have now been fixed.
3921 * This release breaks binary compatibility again. This time
3922 at least I've incremented the FASL file format version to 2, so that the
3923 problem can be detected reliably instead of just causing weird errors.
3924 * various new style warnings:
3925 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3926 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3927 ** using the lexical binding of a variable named in the *FOO* style
3928 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3929 as specified by ANSI.
3930 * *RANDOM-STATE* is no longer automatically initialized from
3931 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3932 default behavior of the system is to repeat its behavior every time
3933 it's run. If you'd like to change this behavior, you can always
3934 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3935 old convention there was no comparably easy way to get the system to
3936 repeat its behavior every time it was run.
3937 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3938 FTYPE declarations has been removed, in favor of their ANSI
3939 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3940 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3941 the types of their sequence arguments can be determined at compile time.
3942 This is done through a new open code expansion for MAP which eliminates
3943 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3944 argument types can be determined at compile time.
3945 * The optimizer now transforms COERCE into an identity operation when it
3946 can prove that the coerced object is already of the correct type. (This
3947 can be a win for machine generated code, including the output of other
3948 optimization transforms, such as the MAP transform above.)
3949 * Credit information has been moved from source file headers into CREDITS.
3950 * Source file headers have been made more standard.
3951 * The CASE macro now compiles without complaining even when it has
3954 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3956 * (Note that the way that the PCL macroexpansions were rewritten
3957 to accommodate the change in DEFGENERIC below breaks binary
3958 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3959 not run under sbcl-0.6.2. Once we get out of alpha releases,
3960 i.e. hit release 1.0.0, we'll probably try to maintain binary
3961 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3962 and sbcl-1.4.4. Until then, however, it might be fairly common
3963 for maintenance releases to break binary compatibility.)
3964 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3966 * The reporting of unhandled signals has been changed to print some
3967 explanatory text as well as the report form. (Previously only
3968 the report form was printed.)
3969 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3970 it defines, so that the compiler no longer issues undefined function
3971 warnings for compiled-but-not-yet-loaded generic functions.
3972 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3973 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3974 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3975 section of the ANSI spec are supported.
3976 * The "" nickname for the "KEYWORD" package has been removed.
3977 The reader still handles symbol tokens which begin with a package marker
3978 as keywords, but it doesn't expose its mechanism for doing so in the
3979 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3980 * The system now issues STYLE-WARNINGs for contradictory TYPE
3981 proclamations. (Warnings for contradictory FTYPE proclamations would
3982 be nice too, but those can't be done usefully unless the type system
3983 is made smarter about FUNCTION types.)
3984 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3985 systematized, so that "*target-*.lisp is supposed to exist only on the
3986 target and imply that there's a related file which exists on the
3987 host, and *host-*.lisp is supposed to exist only on the host and imply
3988 that there's a related file which exists on the target. This involves a
3989 lot of renaming. Hopefully the acute confusion caused by the renaming
3990 will be justified by the reduction in chronic confusion..
3991 ** runtime-type.lisp -> early-target-type.lisp
3992 ** target-type.lisp -> late-target-type.lisp
3993 ** early-host-format.lisp -> early-format.lisp
3994 ** late-host-format.lisp -> late-format.lisp
3995 ** host-error.lisp -> misc-error.lisp
3996 ** early-error.lisp -> early-target-error.lisp
3997 ** late-error.lisp -> late-target-error.lisp
3998 ** host-defboot.lisp -> early-defboot.lisp
3999 ** code/misc.lisp -> code/target-misc.lisp
4000 ** code/host-misc.lisp -> code/misc.lisp
4001 ** code/numbers.lisp -> code/target-numbers.lisp
4002 ** code/early-numbers.lisp -> numbers.lisp
4003 ** early-host-type.lisp -> early-type.lisp
4004 ** late-host-type.lisp -> late-type.lisp
4005 ** host-typep.lisp -> typep.lisp
4006 ** load.lisp -> target-load.lisp
4007 ** host-load.lisp -> load.lisp
4008 ** host-disassem.lisp -> disassem.lisp
4009 ** host-insts.lisp -> insts.lisp
4010 ** byte-comp.lisp -> target-byte-comp.lisp
4011 ** host-byte-comp.lisp -> byte-comp.lisp
4012 ** host-signal.lisp -> signal.lisp
4013 ** host-defstruct.lisp -> defstruct.lisp
4014 ** late-target-type.lisp -> deftypes-for-target.lisp
4015 Furthermore, several other previously target-only files foo.lisp (e.g.
4016 hash-table.lisp and random.lisp) have been split into a target-and-host
4017 foo.lisp file and a target-only target-foo.lisp file, with their key type
4018 definitions in the target-and-host part, so that the cross-compiler will
4019 know more about target types.
4020 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4021 gone away. In their place are various *BACKEND-FOO* variables
4022 corresponding to the slots of the old structure.
4023 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4024 into the target SBCL has been fixed.
4025 * The chill.lisp system for loading cold code into a running SBCL
4027 * Support for the CMU CL "scavenger hook" extension has been removed.
4028 (It was undocumented and unused in the CMU CL sources that SBCL was
4029 derived from, and stale in sbcl-0.6.1.)
4030 * Various errors in the cross-compiler type system were detected
4031 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4032 (enabling various consistency checks). Many of them were fixed,
4033 but some hard problems remain, so the compiler is back to
4034 running without *TYPE-SYSTEM-INITIALIZED* for now.
4035 * As part of the cross-compiler type system cleanup, I implemented
4036 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4037 * I have started adding UNCROSS calls throughout the type system
4038 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4039 on cross-compiler input files will be able to go away, and various
4041 * CONSTANTP now returns true for quoted forms (as explicitly required
4044 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4046 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4047 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4048 (MAKE-LIST -1). In the longer term, it ought to become true
4049 that declarations are assertions even at SAFETY 1. For now, it's not
4050 quite true even at SAFETY 3, but it's at least more nearly true..
4051 (Note that this change seems to increases the size of the system by
4052 O(5%) and to decrease the speed of the compiler by 20% or more.)
4053 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4054 for the problem of printing dozens of lines of distracting information
4055 about low-level system machinery as part of the top stack frame
4056 on entry to the debugger when an undefined function was called.
4057 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4058 is not reset to COMMON-LISP-USER.
4059 * Compilation of stuff related to dyncount.lisp has been made conditional
4060 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4061 smaller. The various dyncount-related symbols have been moved into
4062 a new "SB-DYNCOUNT" package.
4063 * tty-inspect.lisp has been renamed to inspect.lisp.
4064 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4065 feature has gone away. (When we eventually port to other flavors of
4066 libc and/or Unix, we'll try to make the differences between flavors
4067 invisible at the user level.)
4068 * Various other *FEATURES* tags, and/or their associated conditionals,
4069 have been removed if obsolescent, or given better documentation, or
4070 sometimes given more-mnemonic names.
4072 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4074 * tidied up "make.sh" script
4075 * tidied up system directory structure
4076 * better "clean.sh" behavior
4077 * added doc/FOR-CMUCL-DEVELOPERS
4078 * many many small tweaks to output format, e.g. removing possibly-confusing
4079 trailing #\. character in DESCRIBE-INSTANCE
4080 * (EQUALP #\A 'A) no longer signals an error.
4081 * new hashing code, including EQUALP hashing
4082 * tidied up Lisp initialization and toplevel
4083 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4084 * command line argument processing
4085 * added POSIX-GETENV function to deal with Unix-ish environment variables
4086 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4087 terminating SBCL on EOF
4088 * non-verbose GC by default
4089 * There is no more "sbcl" shell script; the sbcl file is now the C
4090 runtime executable (just like CMU CL).
4091 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4093 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4094 symbol and package information as Lisp native symbol and package objects
4095 instead of strings naming symbols and strings naming packages. This way,
4096 whenever packages are renamed (as in warm init), debug information is
4097 transformed along with everything else.
4098 * tweaked the optimization policy declarations which control the building
4099 of SBCL itself. Now, among other things, the system no longer saves
4100 source location debugging information. (This helps two problems at once
4101 by reducing SBCL size and by keeping SBCL from trying to look for its
4102 sources -- which may not exist -- when reporting errors.)
4103 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4104 debugging and testing purposes
4105 * cleaned up printing, making the printer call PRINT-OBJECT for
4106 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4107 methods, giving nearly-ANSI behavior
4108 * converted almost all special variables to use *FOO* naming convention
4109 * deleted PARSE-TIME functionality, since it can be done portably
4110 * moved some files out of cold init into warm init
4111 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4113 * regularized formatting of source files
4114 * added an install.sh script
4115 * fixed ridiculous memory usage of cross-compiler by making
4116 compiler/alloc.lisp not try to do pooling unless it can hook
4117 itself into the GC of the cross-compilation host. Now the system
4118 builds nicely on my old laptop.
4119 * added :SB-ALLOC in target-features.lisp-expr
4120 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4121 was not implemented)
4122 * re-did condition handling and note reporting in the compiler. Notes
4123 are no longer handled by signalling conditions. Style warnings
4124 and warnings are handled more correctly and reported in such a way
4125 that it's easy to find one or the other in your output (so that you
4126 can e.g. figure out which of many problems caused COMPILE-FILE to
4128 * changed the severity of several compiler warnings from full WARNING
4129 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4130 compiler note reporting so that it doesn't use the condition system
4131 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4132 COMPILE-FILE command)
4133 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4134 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4135 no longer supported, since their implementation was deeply intertwingled
4136 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4137 * removed bogus "support" for compiler macros named (SETF FOO), and
4138 removed the compiler macro for SETF INFO (but only after making a fool
4139 of myself on the cmucl-imp mailing list by posting a bogus patch for
4140 DEFINE-COMPILER-MACRO..)
4141 * Compiled files containing forms which have side effects on the Lisp
4142 reader (such as DEFPACKAGE forms) are now handled more correctly.
4143 (Compiler queuing of top level lambdas has been suppressed by setting
4144 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4145 * deleted various currently-unused source files, e.g. gengc.lisp. They
4146 may be added back at some point e.g. when porting to other architectures,
4147 but until they are it's distracting to distribute them and to try to
4149 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4150 there were so many of them they're just distractions, and UNCROSS is
4151 known to be able to handle the current sources
4152 * moved PROFILE functionality into TRACE, so that it will be clear
4153 how the wrapping and unwrapping of functions when you profile them
4154 interacts with the wrapping and unwrapping of functions when you
4155 trace them. (Actually, the functionality isn't there yet, but at least
4156 the interface specification is there. Hopefully, the functionality will
4157 arrive with some future maintenance release.)
4158 * removed host-oops.lisp
4159 * changed signature of QUIT function to allow UNIX-CODE argument
4160 * fixed READ-SEQUENCE bug
4161 * tweaked verbose GC output so that it looks more like the progress
4162 output that ANSI specifies for functions like LOAD
4163 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4164 * added <http://sbcl.sourceforge.com> to the banner information printed by