1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
3 * bug fix: >= and <= gave wrong results when used with NaNs.
5 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
6 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
7 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
8 produce more efficient code on the x86 if the compiler can determine
9 that (+ INDEX <constant>) does not require a bounds check and FOO
10 has an element type at least 8 bits wide.
11 * bug fix: references to undefined variables are handled the same way
12 in toplevel forms as in the normal compiler
13 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
15 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
16 (thanks to Jon Buller)
17 * improvement: faster compilation times for complex functions
18 * improvement: added readlink support to SB-POSIX (thanks to Richard
21 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
22 * improvement: experimental support for mach exception handling on
23 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
25 * improvement: support for GBK external format.
26 (thanks to Chun Tian (binghe))
27 * improvement: the debugger now displays variables that have been closed
28 over, in code compiled with (DEBUG 2) or higher
29 * improvement: support for executable cores on NetBSD (thanks to
31 * new feature: added a RESTART-FRAME debugger command
32 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
33 be used to provide an implementation for FILE-POSITION on Gray streams
34 (thanks to Eric Marsden)
35 * new feature: add syslog, openlog and closelog support to SB-POSIX
36 (thanks to Richard Kreuter)
37 * optimization: the function call overhead in code compiled with
38 a high DEBUG optimization setting is significantly
39 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
40 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
41 (thanks to Tony Martinez)
42 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
43 evaluated once (reported by Kevin Reid)
44 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
45 works again (thanks to Kilian Sprotte)
46 * bug fix: an error is signaled for tagbodies with duplicate tags
47 (thanks to Stephen Wilson)
48 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
49 * bug fix: Win32 port can now handle foreign code unwinding Lisp
50 stack frames from alien callbacks.
51 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
52 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
53 65k pages (thanks to David Woodhouse)
54 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
56 changes in sbcl-1.0.1 relative to sbcl-1.0:
57 * new platform: FreeBSD/x86-64, including support for threading.
58 * new feature: the compiler stores cross-referencing information
59 abount function calls (who-calls), macroexpansion (who-macroexpands)
60 and special variables (who-binds, who-sets, who-references) for code
61 compiled with (< SPACE 3). This information is available through the
62 sb-introspect contrib.
63 * new feature: users may subclass SEQUENCE, and have instances of
64 these classes interoperate with standard Common Lisp functions if
65 a number of methods are defined. (This feature is experimental
66 and the interface subject to change based on feedback from SBCL
67 users and the general community)
68 * improvement: sb-sprof traces call stacks to an arbitrary depth on
69 x86/x86-64, rather than the previous fixed depth of 8
70 * improvement: another pthread back-end of mutex "pthread-futex".
71 * bug fix: non-ascii command-line arguments are processed correctly
72 (thanks to Yaroslav Kavenchuk)
73 * bug fix: non-required arguments were not passed correctly when a method
74 defined using DEFMETHOD was called from a mop-generated method using
75 CALL-NEXT-METHOD (reported by Pascal Costanza)
76 * bug fix: recursion is now permitted in accessors through
77 SLOT-UNBOUND. (reported by Pascal Costanza)
78 * bug fix: an error was signaled at startup if the HOME environment
79 variable was defined, but had an empty value (reported by Peter Van Eynde)
80 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
81 signal a PROGRAM-ERROR, not a BUG.
82 * bug fix: SB-POSIX:READDIR works when built with large file support.
83 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
85 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
86 for better automatic indentation support. (thanks to Matt Pillsbury)
87 * optimization: loading generic functions no longer takes O(n^2) time,
88 proportional to the amount of methods in the generic function
89 (reported by Todd Sabin and Jeremy Brown)
90 * optimization: the FIND and POSITION family of sequence functions
91 are significantly faster on arrays whose element types have been
93 * improvements to the Windows port:
94 ** Intermittent heap corruption problems have been fixed. (thanks
95 to Alastair Bridgewater)
96 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
98 ** Lisp is able to unwind foreign exception frames from alien
99 callbacks. (thanks to Alastair Bridgewater)
101 changes in sbcl-1.0 relative to sbcl-0.9.18:
102 * improvement: experimental support for threading on FreeBSD/x86.
103 (thanks to NIIMI Satoshi)
104 * improvement: runtime option --dynamic-space-size can be used
105 to set the size of the dynamic space reserved on startup.
106 * improvement: floating point modes in effect are now saved in
107 core, and restored on startup.
108 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
109 startup, not time since first call to GET-INTERNAL-REAL-TIME.
110 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
111 threads are not running after *SAVE-HOOKS* have run.
112 * improvement: writes to CLOS instance slots are type-checked in code
113 compiled with (SAFETY 3)
114 * improvement: floating-point exception handling on FreeBSD (thanks to
116 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
117 (thanks to Zach Beane)
118 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
120 * improvement: added support for the Shift-JIS external format.
121 (contributed by NIIMI Satoshi)
122 * improvement: callbacks are supported on Linux/PPC. (thanks to
124 * bug fix: compiler bug triggered by a (non-standard) VALUES
125 declaration in a LET* was fixed. (reported by Kaersten Poeck)
126 * bug fix: file compiler no longer confuses validated and already
127 dumped structurres. (reported by Kaersten Poeck)
128 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
129 fill-pointer signals a type-error as required. (thanks to
131 * bug fix: disassemly of funcallable instances works.
132 * bug fix: single stepping on PPC.
133 * bug fix: fix thread-safety problems in the type system (generally
134 manifesting as nonsensical errors like "STRING is a bad type specifier
135 for sequences" or "The value 1 is not of type FIXNUM")
136 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
137 (reported by Josip Gracin)
138 * bug fix: an error is signaled for attempts to displace arrays with
139 incompatible element types (thanks to Mario Mommer)
140 * bug fix: more correct handling of wide characters in debug info
141 (bug reported by Attila Lendvai and fixed by Juho Snellman)
142 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
143 and don't cause extra consing
144 * optimization: MAP and MAP-INTO are significantly faster on vectors
145 whose elements types have been declared.
146 * Improvements to SB-SPROF:
147 ** Support for allocation profiling
148 ** Reduced profiling overhead, especially for long profiling runs
149 * Improvements to the Windows port:
150 ** floating point exceptions are now reported correctly.
151 ** stack exhaustion detection works partially.
152 ** more accurate GET-INTERNAL-REAL-TIME.
153 ** better RUN-PROGRAM behaviour in case of errors in the child
155 ** PROBE-FILE now simplifies pathnames correctly.
156 ** DIRECTORY now works correctly with :WILD-INFERIORS.
157 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
158 1st 1970 (although time timezone data will be unreliable).
159 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
161 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
162 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
163 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
165 * bug fix: two potential GC deadlocks affecting threaded builds.
166 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
167 returns T (reported by Anton Kazennikov)
168 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
169 with non-variable places
170 * bug fix: remove a race condition in the setting of
171 funcallable-instance functions, this should make threaded CLOS
172 code more stable against memory faults.
173 * bug fix: corruption of specials when unbinding is interrupted by an
174 asynchronous unwind (reported by Hannu Koivisto)
175 * improvement: the debugger will now also display local variables that
176 are only used once, for code compiled with a DEBUG optimization quality
179 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
180 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
181 * incompatible change: External-format support for FFI calls. The
182 SB-ALIEN:C-STRING no longer implies an ASCII
183 external-format. Instead the string is subject to external-format
184 conversion. Additionally return values of type SB-ALIEN:C-STRING
185 are by default of type (SIMPLE-ARRAY CHARACTER), not
186 SIMPLE-BASE-STRING. For an alien type that behaves like the old
187 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
188 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
189 * incompatible change: SB-EXT package no longer contains the
190 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
191 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
193 * incompatible change: the single-stepper is no longer available
194 on Alpha, Mips and Sparc platforms.
195 * minor incompatible change: the direct superclasses of
196 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
197 not (STANDARD-OBJECT FUNCTION). This makes the
198 class-precedence-lists of GENERIC-FUNCTION and
199 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
201 * minor incompatible change: the default stream external format on
202 non-unicode SBCL is no longer detected from the locale, but is always
204 * new feature: Add a version of evaluator that uses an interpreter instead
205 of the compiler. EVAL still uses the compiler by default, to switch it
206 to use the interpreter, set the value of the variable
207 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
208 * minor incompatible change: the single-stepper REPL has been merged
209 with the normal debugger (see the "Stepping" heading of the debugger help
210 for more details). The debugger command STEP will no longer switch
211 to the single-stepper REPL.
212 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
213 for a type now works.
214 * bug fix: loading of default sysinit file works. (thanks to Leonid
216 * bug fix: better detection of circularities in the file-compiler.
217 (reported by Marco Monteiro)
218 * bug fix: the CL pathname functions now work with files that have
219 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
220 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
221 systems with Unix98 pty semantics.
222 * bug fix: ASDF-INSTALL will now work with bsd tar.
223 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
225 * bug fix: timers expiring in dead threads no longer cause a
226 type-error (reported by Paul "Nonny Mouse").
227 * bug fix: thanks to more lightweight single-stepper instrumentation,
228 code compiled with (DEBUG 3) will compile and execute significantly faster,
229 and will have more accurate type-inferencing than before
230 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
231 whose bindings are modified
232 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
233 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
234 ** replace dummy implementations of CL:MACHINE-INSTANCE and
235 CL:SOFTWARE-VERSION with proper version
237 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
238 * feature: implemented the READER-METHOD-CLASS and
239 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
240 as specified by AMOP.
241 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
243 * optimization: faster LOGCOUNT implementation on x86 and x86-64
244 (thanks to Lutz Euler)
245 * optimization: hashing of general arrays and vectors has been
246 improved. (reported by Any Fingerhut)
247 * enhancement: SB-INTROSPECT is now able to find definitions of
248 profiled functions. (thanks to Troels Henriksen)
249 * enhancement: compiler-macro expansion applies now to FUNCALL forms
250 as well, allowing compiler-macros for SETF-functions to expand.
251 * enhancement: step-instrumentation no longer wraps known
252 single-value functions with multiple-value context, allowing
253 better type inference.
254 * fixed bug #337: use of MAKE-METHOD in method combination now works
255 even in the presence of user-defined method classes. (reported by
256 Bruno Haible and Pascal Costanza)
257 * fixed bug #339(c): if there are applicable methods not part of any
258 long-form method-combination group, call INVALID-METHOD-ERROR.
259 (reported by Bruno Haible)
260 * fixed bug #361: the :FUNCTION initarg in the protocol for
261 initialization of methods can now be used to override
262 internally-produced optimized functions. (reported by Bruno
264 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
265 system-provided lambda expression no longer cause warnings about
266 unbound #:|pv-table| symbols.
267 * bug fix: improved the handling of type declarations and the
268 detection of violations for keyword arguments with non-constant
270 * bug fix: potentially erronous calls to PATHNAME and
271 MERGE-PATHNAMES were being flushed in some cases.
272 (reported by Richard Kreuter)
273 * bug fix: compiled calls to TYPEP were mishandling obsolete
274 instances. (reported by James Bielman and Attila Lendvai)
275 * bug fix: format strings with ~> without matching ~< no longer
276 trigger an AVER, but signal an understandable error instead.
277 (reported by Antonio Martinez)
278 * bug fix: specifying an output-file without a pathname-type for
279 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
280 of input-file instead of "fasl". (reported by Robert Dodier)
281 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
282 (reported by James Y Knight).
283 * bug fix: compiler-macros-function did not consider the environment
284 argument for shadowing by local functions.
285 * bug fix: compiler-macros expansion was inhibited by local INLINE
287 * bug fix: inline expansions of known functions were subject to
288 step-instrumentation in high debug policies, leading to problems
290 * bug fix: compiler failed to differentiate between different CONS
292 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
293 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
294 * bug fix: #368: incorrect use of expressed vs. upgraded array
296 * bug fix: #306a: more precise unions of array types.
297 * thread-safety improvements:
298 ** CONDITION-WAIT could return early on Linux, if the thread was
299 interrupted and subsequently continued with SIGCONT.
300 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
302 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
303 * added support for the ucs-2 external format. (contributed by Ivan
305 * minor incompatible change: pretty printing of objects of type
306 (cons symbol) is, in the default pprint-dispatch-table, now
307 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
309 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
310 called later in a class's lifetime, possibly as late as when the
311 first instance of the class is created. Previously,
312 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
313 class became finalizeable.
314 * fixed bug: FILE-POSITION sometimes returned inconsistent results
315 for multibyte external-format streams. (thanks to "vbzoli")
316 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
317 with :ALLOCATION :CLASS inherited from superclasses of the
319 * fixed bug: anonymous classes can now be created using the :NAME
320 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
321 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
322 * fixed bug: core-files saved with :EXECUTABLE T can again be
323 executed when SBCL_HOME isn't set. (reported by James Knight)
324 * fixed bug: toplevel LOCALLY forms with declarations could
325 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
326 * fixed bug: printing from several different threads using different
327 values of *print-case* could cause invalid output, due to
328 some internal special variables of the printer not being bound
329 thread-locally (reported by Max Mikhanosha)
330 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
331 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
332 (reported by Pascal Costanza)
333 * fixed bug: FINALIZE-INHERITANCE is called from
334 REINITIALIZE-INSTANCE on classes when the class has previously
335 been finalized, as required by AMOP.
336 * minor code generation optimizations:
337 ** better register allocation in CLOS dispatching functions
338 ** overflow detection when coercing signed bytes to fixnums on x86-64
339 ** is now implemented with one IMUL instruction instead of three shifts
340 ** more efficient bit-vector access on x86 and x86-64
341 ** more efficient access to raw structure slots on x86 and x86-64
342 * fixed some bugs revealed by Paul Dietz' test suite:
343 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
346 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
347 * feature: thread support on Solaris/x86, and experimental thread support
349 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
351 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
352 default method for SLOT-UNBOUND.
353 * minor incompatible change: prevent the user from specializing the
354 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
355 somewhat counter to the intent of the protocol, I (CSR) think, and
356 additionally it just doesn't work in SBCL as currently
357 implemented, thanks to optimizations (that are always valid for
358 the other three SLOT-VALUEish functions, but not for the setter).
359 * minor incompatible change: the :SB-LDB feature is now enabled by
360 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
361 the low-level debugger.
362 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
363 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
364 down to an SB-SYS:FD-STREAM, allowing direct communication in
365 more cases. Temporary files and pipes are still used as a fallback
367 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
368 on the non-reentrant C functions localtime(3) and gmtime(3).
369 * bug fix: global optimization policy was not visible in LOCALLY and
371 * bug fix: class objects can be used as specializers in methods.
372 (reported by Pascal Costanza)
373 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
374 with a type error. (reported by blitz_ on #lisp)
375 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
376 failed with a type error. (reported by Pascal Bourguignon)
377 * bug fix: merging pathnames against defaults with :DIRECTORY
378 starting with '(:RELATIVE :BACK) should preserve the :BACK.
379 (reported by James Y Knight)
380 * bug fix: saving large (>2GB) cores on x86-64 now works
381 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
382 constant index and a (simple-array (signed-byte 32)) array
383 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
384 error (patch by Robert J. Macomber)
385 * feature: TIME now displays the amount of run-time spent in GC
386 * bug fix: The debugger now does a better job of respecting
387 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
388 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
389 workaround for bug 403.)
390 * bug fix: floating point exception handling now works on FreeBSD
391 (thanks to NIIMI Satoshi)
392 * fixed some bugs revealed by Paul Dietz' test suite:
393 ** MISC.641: LET-conversion were not supposed to work in late
395 * improvements to the Win32/x86 port:
396 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
397 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
399 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
400 * new feature: source path information is generated for macro-expansion
401 errors for use in IDE's like Slime (thanks to Helmut Eller)
402 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
403 * bug fix: compiler does not loop forever on an invalid type in
405 * improvement: compilation of most CLOS applications is significantly
407 * optimization: added a limited bytecode compiler for simple toplevel
408 forms, speeding up compilation and FASL loading
409 * bug fix: the statistical profiler now properly distinguishes anonymous
412 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
413 * minor incompatible change: in sbcl-0.9.11 (but not earlier
414 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
415 into subclasses of the finalized class. Now user calls to
416 FINALIZE-INHERITANCE finalize just the one class, and calls by the
417 system return before any subclasses are finalized.
418 * minor incompatible change: The reader no longer ignores errors
419 regarding non-existent packages in #+ and #- feature tests.
420 * new feature: command line options --no-sysinit, --no-userinit to
421 inhibit loading the corresponding init files
422 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
423 for sending data through UDP sockets (thanks to François-René Rideau)
424 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
425 error is signalled instead (thanks to François-René Rideau)
426 * minor incompatible change: Error signalling behaviour of lexical
427 operations violating package locks has changed slightly. Refer to
428 documentation on package locks for details.
429 * enhancement: EVAL can process IF-expressions without resorting to the
431 * bug fix: Some operations involving SIN, COS, or TAN weren't being
432 constant-folded properly due to missing out-of-line functions.
433 (reported by Mika Pihlajamäki)
434 * bug fix: LISTEN sometimes returned T even in cases where no data was
435 immediately available from the stream
436 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
437 were reversed. (reported by Levente Mészáros)
438 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
439 when given a vector displaced to an adjustable array. (reported
441 * bug fix: derivation of float boundaries from numbers outside the
442 appropriate float range (reported by John Wiseman)
443 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
445 * bug fix: precomputing cache entries for generic functions with
446 some subclasses of specializers as yet invalid does not attempt to
447 fill a cache line with a negative offset. (reported by Levente
449 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
450 allow condition class objects as arguments to DOCUMENTATION and
451 (SETF DOCUMENTATION); only find and set documentation for
452 structure names for the STRUCTURE doc-type. (suggested by Gary
454 * improvements to the Win32/x86 port:
455 ** (user-homedir-pathname) and default initialization file
456 locations now know about the user's "Documents and Settings"
457 directory (thanks to Yaroslav Kavenchuk)
458 ** run-program is implemented (thanks to Mike Thomas)
459 ** sockets support (thanks to Timothy Ritchey)
460 ** better backtrace support (thanks to Alastair Bridgewater)
461 ** sb-grovel supported
462 ** asdf-install and sb-posix work somewhat
463 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
464 * improvements to the Solaris/x86 port:
465 ** works on Solaris 11/Solaris Express
466 ** floating-point exception handling support
467 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
468 * fixed some bugs revealed by Paul Dietz' test suite:
469 ** REMOVE-METHOD returns its generic function argument even when
470 the method is not one of the generic functions' methods.
471 ** objects declared as MEMBER types can be admissible arguments to
473 ** printing characters should simply be printed by the FORMAT ~:C
475 ** compiler failure when compiling functions with hairy constant
476 defaults for optional parameters.
477 ** compiler produces wrong code when MAYBE-INLINE-expanding a
478 function, which is already optimized.
480 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
481 * new platform: experimental support for SBCL x86/Darwin, including
482 MacOS X 10.4.5 on Intel.
483 * new feature: Unicode character names are now known to the system
484 (through CHAR-NAME and NAME-CHAR).
485 * new feature: the filesystem location of SBCL's core file is
486 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
487 * minor incompatible change: the contrib modules SB-POSIX and
488 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
489 this change is to make it easier to distribute
490 location-independent binaries.
491 * bug fix: as implied by AMOP, standardized classes no longer have
492 slots named by external symbols of public packages. (reported by
494 * optimization: calling functions via constant symbols -- as in
495 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
496 via the function object as in (FUNCALL #'FOO).
497 * optimization: on x86 and x86-64, the calling convention for the
498 case of dealing with an unknown number of values has been altered
499 to be friendlier to the prediction heuristics implemented,
500 particularly with reference to CALL and RET pairing. (thanks to
501 Alastair Bridgewater)
502 * optimization: on x86, the code for access to thread-local symbol
503 values and binding/unbinding of thread-local symbols is smaller.
504 (thanks to Alastair Bridgewater)
505 * enhancement: CONSTANTP is now able to determine constantness of
506 more complex forms, including calls to constant-foldable standardized
507 functions and some special forms beyond QUOTE.
508 * fixed bug: occasional GC crashes on Solaris/x86
509 * optimization: x86-64 supports stack allocation of results of simple
510 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
511 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
512 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
513 (thanks to James Knight)
514 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
515 by the standard (thanks to Stephen Compall)
517 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
518 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
519 be used for bundling the runtime and the core file into one
520 executable binary. This feature is not currently supported on all SBCL
521 platforms. (thanks to James Bielman and NIIMI Satoshi)
522 * new feature: a generational or ephemeral garbage collector is now
523 the default on the PowerPC platform (both Linux and Darwin). The
524 old Cheney (stop and copy) collector is a build-time option.
525 (thanks to Cyrus Harmon, after Raymond Toy)
526 * minor incompatible change: the method by which SBCL finds its
527 contributed modules has changed; it no longer relies on symbolic
528 links from an $SBCL_HOME/systems directory, but searches directly
529 in the subdirectories of $SBCL_HOME.
530 * enhancement: the dynamic heap size on the Linux/PPC platform is
531 markedly larger, even using the older Cheney garbage collector.
532 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
533 certain complicated string types. (reported by Gary King)
534 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
535 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
536 * fixed bug: DOCUMENTATION on structures no longer signals an
537 error if no structure type of the right name exists. (reported by
539 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
540 applicable non-standard primary or :AROUND method on
541 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
542 no longer cause unbound variable errors. (reported by Kevin Reid)
543 * fixed bug: metacircle resolution in cases where methods have slots
544 added before the slots from STANDARD-METHOD. (reported by Jean
546 * fixed bug: the Power PC assembly code for calling into lisp
547 sometimes computed its return address wrongly (depending on the
548 15th bit of the address, fixed at link time). This used to
549 manifest itself in a segmentation violation while building PCL.
550 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
551 many others over the years)
552 * fixed bug: ROOM no longer reports silly numbers for stack usage if
553 the stack pointer (treated as a signed integer) is negative.
554 (thanks to Peter van Eynde)
556 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
557 * new platform: experimental support for the Windows operating
558 system has been added. (thanks to Alastair Bridgewater)
559 * fixed several bugs in and robustified the PPC FFI (including
560 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
561 * bug fix: allow non-simple string symbol names (reported by Paul
563 * bug fix: interrupt handling on NetBSD (thanks to Richard M
565 * bug fix: saving a core corrupted callbacks on x86/x86-64
566 * bug fix: closed a loophole in metacircularity detection and
567 grounding in the PCL implementation of CLOS.
568 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
569 (reported by tomppa on #lisp)
570 * bug fix: clear the direction flag on Lisp -> C transitions, as
571 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
572 (reported by Andrej Grozin and Hendrik Maryns)
573 * optimization: major improvements to GC efficiency on GENCGC platforms
574 * optimization: faster implementation of EQUAL
575 * optimization: emit more efficient opcodes for some common
576 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
577 * optimization: several other minor code-generation improvements on x86-64
578 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
580 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
581 * minor incompatible change: (SETF CLASS-NAME) and (SETF
582 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
583 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
584 by ANSI as a generic function, and for consistency (SETF
585 GENERIC-FUNCTION-NAME) is treated likewise.
586 * fixed bug #233.b: make constraint propagation notice when a variable
587 value is changed after it is referenced but before it is used
588 * fixed bug #296: no more arbitrary behaviour from filenames with
589 odd characters as --load arguments. (reported by Adam Warner)
590 * fixed bug #390: :CHARACTER-SET pathname components now work as
591 expected. (reported by Tim Daly Jr)
592 * fixed bug #391: complicated :TYPE intersections in slot
593 definitions no longer cause an error in PCL internals.
594 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
595 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
596 returning the number of octets which would be written to the
597 file-stream. (thanks to Robert J. Macomber)
598 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
599 arguments to the internal stream functions. (thanks to David
601 * bug fix: stack exhaustion is now handled on the x86/SunOS
602 platform. (thanks to Daisuke Homma)
603 * bug fix: more accurate ROOM results on GENCGC platforms
604 * optimization: improved type inference for arithmetic-for
605 index variables in LOOP
606 * optimization: faster floating-point SQRT on x86-64
607 * fixed some bugs revealed by Paul Dietz' test suite:
608 ** DOCUMENTATION returns NIL instead of "" for method combinations
609 that don't have a docstring
611 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
612 * minor incompatible change: (SETF CLASS-NAME) and (SETF
613 GENERIC-FUNCTION-NAME) are no longer generic functions, and
614 therefore are not customizeable by user code (as seems to be at
615 least permitted and maybe required by AMOP). As a consolation,
616 however, the SBCL implementation of these functions now calls
617 REINITIALIZE-INSTANCE as specified by AMOP.
618 * bug fix: slot-definition documentation is propagated as per ANSI
619 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
620 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
621 argument, as do eslotd initialization methods. (from Pascal
622 Costanza's "Closer" project)
623 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
624 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
626 * bug fix: it is now possible to have more than one subclass of
627 STANDARD-GENERIC-FUNCTION without causing stack overflow.
628 (reported by Bruno Haible, Pascal Costanza and others)
629 * bug fix: the dependent update protocol now works for generic
630 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
632 * bug fix: condition-class instances corresponding to
633 DEFINE-CONDITION forms are now created eagerly. (reported by
634 Kalle Olavi Niemitalo on comp.lang.lisp)
635 * bug fix: floating point printing is more accurate in some
636 circumstances. (thanks to Simon Alexander)
637 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
638 merged with *DEFAULT-PATHNAME-DEFAULTS*.
639 * bug fix: callbacks on OS X now preserve stack-alignment.
640 (thanks to Cyrus Harmon)
641 * enhancement: the x86-64 disassembler is much better at
642 disassembling SSE instructions. (thanks to Lutz Euler)
643 * enhancement: CHECK-TYPE on a variable now allows type-inference
644 (thanks to Vincent Arkesteijn)
645 * optimization: improved performance of EUC-JP external format.
646 (thanks to NIIMI Satoshi)
647 * optimization: performance improvements to IO on file streams of
648 :ELEMENT-TYPE CHARACTER
649 * optimization: much faster memory allocation on x86-64
650 * optimization: faster garbage collections (latency and throughput)
652 * optimization: faster bignum subtraction and division on x86 and x86-64
653 (thanks to Lutz Euler)
654 * optimization: more accurate type-inference for loops that use a
655 floating point index variable or a negative step.
657 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
658 * bug fix: add a workaround to SBCL looping infinitely at startup on
659 Linux kernels with apparently buggy implementations of personality().
660 (thanks to Svein Ove Aas)
661 * bug fix: Unicode symbols are correctly printed in LDB backtraces
662 (thanks to David Lichteblau)
663 * bug fix: local bindings shadow global symbol macros for
664 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
665 * optimization: non-open coded uses of numeric comparison operators
666 (e.g. >) no longer cons when called with more than one parameter
667 on platforms supporting dynamic-extent allocation.
668 * enhancement: saving cores with foreign code loaded is now supported
669 on MIPS/Linux in addition to the previously supported platforms.
670 * bug fix: FIND-RESTART now tests for activity, not applicability when given
671 a restart object as identifier. (reported by Helmut Eller for CMUCL)
672 * bug fix: division by zero in sb-sprof when no samples were collected
673 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
674 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
675 (thanks to Alexander Kjeldaas)
676 * new feature: ignoring the return values of destructive functions
677 like NREVERSE signals a compile-time style-warning.
678 (thanks to Kevin Reid)
679 * new feature: the alignment of alien structure fields can be
680 explicitly specified. (thanks to Cyrus Harmon)
681 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
682 and dump core on SIGQUIT
684 ** incompatible change: threads do not inherit values of specials
685 from their parents (see manual)
686 ** bug fix: threads stacks belonging to dead threads are freed by the
687 next exiting thread, no need to gc to collect thread stacks anymore
688 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
689 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
690 ** bug fix: dynamic variable and thread start related gc lossage
691 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
693 * fixed some bugs revealed by Paul Dietz' test suite:
694 ** SUBTYPEP is slightly more accurate on heinously complicated
695 CONS types where some of the members have uncertain (in the
696 NIL, NIL sense) type relationships to each other.
698 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
699 no longer purified unless :PURIFY T is explicitly specified.
700 ** Non-purified cores are significantly smaller than before
702 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
703 * new feature: timers based on Zach Beane's excellent timer package
704 * added support for the following external formats: koi8-u,
705 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
706 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
707 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
708 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
709 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
710 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
711 * incompatible change: a threaded SBCL will no longer revert to
712 non-threaded mode on non-NPTL systems, but refuse to start entirely.
713 * bug fix: interrupts are disabled until startup is complete; no
714 more sigsegvs when receiving a signal to soon
715 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
717 * bug fix: add a workaround for the memory randomization features in
718 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
719 workaround will only be in effect on systems with the proc filesystem
721 * bug fix: printing objects of type HASH-TABLE signals a
722 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
724 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
725 have been running for over 50 days. (reported by Gilbert Baumann)
726 * bug fix: the logic for getting names of functions gets less
727 confused when confronded with alternate-metaclass
728 funcallable-instances. (reported by Cyrus Harmon)
729 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
730 consistent, even on internal alternate-metaclass objects.
731 * bug fix: flush closure information collected by physical
732 environment analysis prepass before the main pass. (bug reported
734 * bug fix: compiler pack phase does not modify a hashtable, which is
735 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
736 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
737 may be expanded. (reported by Alexander <malishev> on c.l.l)
738 * bug fix: no more style-warnings when compiling code using LAST
739 under high-SPEED low-SPACE settings. (reported by David Wallin
741 * fixed some incompatibilities between SBCL's MOP and the MOP
743 ** the METAOBJECT class is now implemented;
744 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
745 STANDARD-OBJECT, as required;
746 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
747 now compatible (as required by VALIDATE-SUPERCLASS); there
748 remains a consistency requirement over the presence or absence
749 of the FUNCTION class in the superclass list of finalized
750 classes; see the manual for more details;
751 ** the :AROUND method for COMPUTE-SLOTS on
752 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
753 requested slot ordering.
755 ** bug fix: parent thread now can be gc'ed even with a live
757 ** bug fix: binding a special with PROGV to no value is not
758 the same as that symbol not having been bound (thanks to
760 ** bug fix: binding specials is thread safe (thanks to
762 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
763 and SB-SPROF do not die with 'no handler for signal XX in
764 interrupt_handle_now(..)' anymore
765 ** bug fix: WITH-TIMEOUT works with multiple running threads
766 * fixed some bugs revealed by Paul Dietz' test suite:
767 ** ENSURE-GENERIC-FUNCTION should take a method class object for
768 the :method-class keyword argument.
770 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
771 * new port: the Solaris operating system on x86 processors is now
772 mostly supported, though some rough edges in the environment
773 remain. (thanks to Daisuke Homma)
774 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
775 space for its heap. (thanks to Thiemo Seufer)
776 * optimization: SBCL on MIPS platforms now supports dynamic-extent
777 closures. (thanks to Thiemo Seufer)
778 * minor incompatible change: eof selects abort in the debugger.
779 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
780 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
782 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
783 deprecated, and will go away in a future revision of SBCL.
784 * minor incompatible change: GC-ON and GC-OFF are no longer
785 implemented with a counter, it does not matter how many times gc
786 is switched on or off
787 * bug fix: discriminating functions for generic function classes
788 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
789 make invalid assumptions about method precedence order. (reported
791 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
792 platforms. (thanks to Thiemo Seufer)
793 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
794 * bug fix: correct pathname printing with printer escaping is on.
795 (thanks to Kevin Reid)
796 * bug fix: complex VOP definitions in "user-space" no longer trigger
797 package locks. (reported by Zach Beane)
798 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
799 for funcallable-instance functions, and is no different from
801 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
802 characters in the current readtable. (reported by Nicholas Neuss)
803 * bug fix: SUBTYPEP on various CONS types returns more a more
804 accurate acknowledgment of its certainty.
805 * optimizations: REMOVE-DUPLICATES now runs in linear time on
806 lists in some cases. This partially fixes bug 384.
807 * flush all standard streams before prompting in the REPL and the
809 * bug fix: signal handling and triggering gc do not conflict
810 directly anymore, in particular a high frequency sb-sprof does
811 not prevent gc from running
812 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
813 approximation for timezone and DST information between the
814 universal time epoch and the smallest negative 32-bit time_t.
815 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
816 year 1899 so long as the encoded time is non-negative.
817 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
818 the correct answer for non-constant rotate amounts when performing
819 an inline 32-bit rotation.
821 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
822 there is only one thread in the session
823 ** bug fix: memory leak for streams created in one thread and
824 written to in another
825 ** bug fix: lockup when compiled with gcc4
826 ** bug fix: race that allows the gc to be triggered when gc is
828 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
829 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
831 ** bug fix: finished threads are gc'ed properly
832 * fixed some bugs revealed by Paul Dietz' test suite:
833 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
834 has arguments with a different set of applicable methods from
835 the orignal arguments.
836 ** The type error thrown by MAP now has a correct expected-type
838 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
839 name a compiled function.
840 ** Three MISC tests where a large bignum was improperly coerced to
841 a float that couldn't represent that bignum during type
842 derivation were fixed.
843 ** SUBTYPEP can now handle types involving the negation of a
844 list-form FUNCTION type.
845 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
846 as (COMPLEX (AND RATIO (NOT FIXNUM))).
847 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
849 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
850 * New feature: Experimental support for bivalent streams: streams
851 opened with :element-type :default now allow character and binary
852 (unsigned-byte 8) I/O
853 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
854 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
856 * bug fix: no more highly sporadic "couldn't check whether ~S is
857 readable" when reading a stream and an interrupt hits in the middle
858 of a select system call
859 * compiler better recognizes complex arrays (reported by Eduardo
861 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
862 for variables on SBCL built with linkage-tables. (reported by Luis
864 * various error reporting improvements.
865 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
866 (Thanks to Thiemo Seufer)
867 * bug fix: nested reader invokations work correctly
868 * bug fix: it is possible to have simultaneous references to foreign
869 code and foreign data with the same name.
871 ** added x86-64 support
872 ** incompatible change: the threading api now works with thread
873 objects instead of thread ids
874 ** bug fix: threads are protected from signals and interruption when
875 starting up or going down
876 ** bug fix: a race where an exiting thread could lose its stack to gc
877 ** bug fix: don't halt on infinite error in threads if possible
878 ** fixed numerous gc deadlocks introduced in the pthread merge
879 ** bug fix: fixed thread safety issues in read and print
880 ** bug fix: debugger doesn't hang on session lock if interrupted at
881 an inappropriate moment
882 ** bug fix: run-program is now thread safe(r)
883 ** bug fix: inner with-recursive-lock no longer releases the mutex
884 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
885 * fixed some bugs revealed by Paul Dietz' test suite:
886 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
887 EXPECTED-TYPE slots filled.
888 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
890 ** MAKE-CONDITION accepts classes as type-designators.
891 ** COMPILE may never return NIL.
892 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
893 range before calling Unix time functions
895 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
896 * numerous signal handling fixes to increase stability
897 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
898 * minor incompatible change: we now correctly canonize default
899 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
900 as per the MOP, rather than the historical (INITARG INITFUNCTION
901 INITFORM). (reported by Bruno Haible)
902 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
903 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
904 for more information.
905 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
906 pathname is a directory pathname.
907 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
908 * dynamic space size on PPC has been increased to 768Mb. (thanks to
910 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
911 :METACLASS argument in addition to a class name. (reported by
912 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
913 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
914 (reported by Bruno Haible; patch from Gerd Moellmann)
915 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
917 * bug fix: more cleanups to the floating point exception handling on
918 x86-64 (thanks to James Knight)
919 * bug fix: the compiler does not try to constant fold calls of
920 COERCE and BIT-* functions when they return freshly constructed
921 objects. (reported by Nikodemus Siivola and Paul Dietz)
922 * optimization: improved the MIPS versions of generic (in the
923 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
924 * optimization: direct conversion of (unsigned-byte 32) to floats on
925 the PowerPC platform.
926 * optimization: structure instances with raw slots now use less
927 memory, and probably show better memory locality. (thanks to
929 * optimization: DYNAMIC-EXTENT declarations for lists and closures
930 are treated as requests for stack allocation on the x86-64,
931 Alpha-32, PPC and SPARC platforms.
932 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
933 the wrong file descriptor; implementation of SOCKET-OPEN-P.
934 (thanks to Tony Martinez)
936 ** gcing a dead thread can no longer lead to lockups
937 ** threads block signals until they are set up properly
938 ** errno is no longer shared by threads
939 ** interrupt-thread restores the eflags register on x86
940 ** fixed some lockups due to gc/thread interaction
941 * fixed some bugs revealed by Paul Dietz' test suite:
942 ** invalid dotted lists no longer raise a read error when
944 ** signal an error if a symbol that names a declaration is used
945 as the name of a type, or vice versa
946 ** allow using the (declare (typespec var*)) abbreviation for
947 (declare (type typespec var*)) with all type specifiers
948 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
949 ** always return NIL from PPRINT-POP when OBJECT is NIL
950 ** don't signal errors when pretty-printing malformed LABELS,
951 FLET or MACROLET forms
952 ** declarations in a DOLIST body are also in scope for the
954 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
956 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
959 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
960 * fixed cross-compiler leakages that prevented building a 32-bit
961 target with a 64-bit host compiler.
962 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
963 opened with :IF-EXISTS :OVERWRITE.
964 * fixed bug 281: error for an invalid qualifier in a short-form method
965 combination method is not signalled until the faulty method is called.
966 * bug fix: iteration variable type inferrer failed to deal with open
967 intervals. (reported by Alan Shields)
968 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
969 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
970 or more runtime options were provided to the sbcl binary.
971 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
972 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
973 * optimization: there's now a fast-path for fixnum arguments in the
974 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
975 * optimization: the code generated on x86-64 is more compact thanks
976 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
977 * bug fix: floating-point exception handling now partly works on
978 x86-64. (Thanks to James Knight)
979 * improvement to the MIPS backend from Thiemo Seufer: C-style
980 64-bit long long arguments and return values to alien functions
982 * fixed some bugs revealed by Paul Dietz' test suite:
983 ** the type-error signalled from WARN has a filled-in DATUM slot.
984 ** the type-error required when a stream is not associated with
985 a file has the stream as its datum.
986 ** type-errors on single-floats on x86-64 no longer have
987 :INVALID-OBJECT as the datum
988 ** the type-errors signalled for invalid function names now have
989 a correct expected type
990 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
991 for structures defined with a :TYPE. Documentation strings for
992 typed structures are no longer immediately discarded
993 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
994 broadcast streams and synonym streams. FILE-LENGTH now also works
995 on broadcast streams.
997 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
998 * incompatible change: the --noprogrammer option, deprecated since
999 version 0.7.5, has been removed. Please use the equivalent
1000 --disable-debugger option instead.
1001 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1003 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1004 inoperational for a while now) has been completely removed.
1005 * null lexical environments are now printed as #<NULL-LEXENV>,
1006 significantly reducing the amount of clutter in typical backtraces.
1007 * documentation on weak pointers, finalization, and after GC hooks
1008 has been added to the manual.
1009 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1010 as other specialized array types, is much faster. SUBSEQ and
1011 COPY-SEQ on such arrays have also been sped up.
1012 * optimization: EQL is now more efficient when at least other argument
1013 is known to be of type (OR FIXNUM (NOT NUMBER)).
1014 * fixed bug: the runtime is now less vulnerable to changes in the
1015 size of the SBCL object on OS X, and virtual memory is reserved for
1016 all spaces that need to be at a fixed address.
1017 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1018 * fixed bug: finalizers and after GC hooks that cause consing are now
1020 * fixed bug: compiler error messages and summaries are now printed to
1021 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1022 * fixed inference of the upper bound of an iteration variable.
1023 (reported by Rajat Datta).
1024 * fixed bug 211e: calling local functions with duplicated constant
1025 keyword argument no longer causes a bogus style warning about an
1027 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1028 ftype declaration to be disregarded. (reported by Dave Roberts)
1029 * fixed bug 373: caused by erronous compilation of references to alien
1030 variables in the runtime on ppc/darwin.
1031 * fixed bug 376: CONJUGATE type deriver.
1032 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1033 (reported by Baughn on #lisp)
1034 * a cross-compiler bug on non-x86 platforms has been identified and
1035 fixed. (thanks to Bruno Haible)
1036 * improvements to the MIPS runtime code for increased stability.
1037 (thanks to Thiemo Seufer)
1038 * increased the maximimum compact environment size to allow
1039 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1040 * partial workaround for bug 135: don't name the function we're
1041 calling for hairy cases of EVAL, so as not to accumulate one environment
1042 entry per call to EVAL. (reported by Kevin Reid)
1043 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1044 * optimization: type testing for non-vector arrays should be faster.
1045 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1047 * bug fix: setting 31st element of a bit vector to zero did not work
1049 * bug fix: redefining a class definition which failed due to a
1050 previous accessor / function clash now works (but see BUGS entry
1051 #380 for more problems in this area). (thanks to Zach Beane)
1052 * the long form of DEFINE-METHOD-COMBINATION disables method group
1053 checking when given a single method group with pattern *. (thanks
1055 * on x86 compiler supports stack allocation of results of simple
1056 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1057 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1058 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1059 * fixed some bugs related to Unicode integration:
1060 ** the restarts for recovering from input and output encoding
1061 errors only appear when there is in fact such an error to
1063 * fixed some bugs revealed by Paul Dietz' test suite:
1064 ** MISC.549 and similar: late transformation of unsafe type
1065 assertions into derived types caused unexpected code
1067 ** SCALE-FLOAT type deriver is less wrong.
1068 ** type derivers for EXP, LOG and similar functions compute result
1069 types for complex arguments better.
1070 ** (MISC.563) CONJUGATE type deriver works for very restricted
1072 ** out-of-line type testers for character strings are available.
1073 ** EQUAL compiler transform understands specialness of objects
1075 ** accessing double-floats stored on the stack now works on x86-64.
1076 ** debugger internals could sometimes create invalid lispobjs,
1077 resulting in GC crashes.
1078 ** MISC.548: type check weakening can convert required type into
1080 ** initialization forms for bindings are not in scope of free special
1083 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1084 * incompatible change: thread support for non-NPTL systems has
1085 been removed - locking is buggy and unreliable. A threaded
1086 SBCL build will now warn at startup and refuse to create
1087 new threads, unless futex support is detected in the kernel
1088 * incompatible change: the top level REPL now has only an ABORT
1089 restart associated with it, not TOPLEVEL and ABORT as it used to.
1090 TOP and TOPLEVEL are now available as debugger commands for
1091 returning to the top level.
1092 * incompatible change: forms evaluated in the REPL now use the
1093 global optimization policy.
1094 * incompatible change: user- and system-initialization files are
1095 no longer processed with LOAD, but by READ and EVAL; hence the
1096 global optimization policy, startup package, readtable, etc,
1098 * The .fasl file format number has been incremented because of
1099 various incompatible changes.
1100 * internal entry point details and argument counts no longer appear
1101 in backtraces unless explicitly requested by setting
1102 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1103 * built-in and standard functions no longer have names like "top
1104 level local call to FOO".
1105 * fixed bug 32: functions defined in non-null lexical environments
1106 now have more legible printed representation
1107 * fixed bug 33: functions defined in non-null lexical environemnts
1108 are now more amenable to inspection by INSPECT.
1109 * workaround for bug 354: XEPs no longer appear in backtraces unless
1110 explicitly requested.
1111 * fixed bug: receiving the signal which results from attempting to
1112 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1113 SIGBUS on other *BSDs) on architectures where the C stack is also
1114 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1115 to debugger confusion or wild instability. (reported by Cheuksan
1117 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1118 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1119 (reported by Lutz Euler)
1120 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1121 compiled code. (reported by Paul Dietz)
1122 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1123 specialized parameter to a method to something that is not TYPEP
1124 the specializer is now possible.
1125 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1126 face of package deletion.
1127 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1128 pathname. (reported by David Tolpin on c.l.l)
1129 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1130 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1131 STRING-STREAM and FILE-STREAM, respectively.
1132 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1133 than previously; in addition, its test suite is now run on build.
1134 (thanks to Luke Gorrie)
1135 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1136 * optimization: added a immediate representation for single-floats
1138 * fixed some bugs revealed by Paul Dietz' test suite:
1139 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1140 ** attempting to create a package with a colliding nickname causes
1141 correctable errors to be signalled.
1142 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1143 ** several x86-64 backend bugs related to sign-extension of immediate
1146 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1147 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1148 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1150 * fixed loading of multiply forward-referenced layouts.
1151 (thanks to Cheuksan Wang)
1152 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1153 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1154 (see COMPILE-FILE documentation for details of :PRINT option)
1155 * fixed bugs 19 and 317: fixed-format floating point printing is
1156 more accurate. This also fixes a bug reported by Adam Warner
1157 related to the ~@F format directive.
1158 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1160 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1161 dispatch table if the from-char is a dispatch macro character.
1162 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1163 by the wordsize no longer ignore the last word. (reported by Lutz
1165 * fixed bug in type checking of dynamic-extent variables. (reported
1167 * optimization: sequence traversal functions use their freedom to
1168 coerce function designators to functions.
1169 * optimization: code with many calls to CLOS methods specialized on
1170 CLOS classes has had redundant type checks removed.
1171 * optimization: added declarations to speed up operations that access
1172 the internal character database (for example STRING-UPCASE)
1173 * optimization: comparison operations between floats and sufficiently small
1174 fixnums no longer create extra rationals
1175 * fixed some bugs related to Unicode integration:
1176 ** portions of multibyte characters at the end of buffers for
1177 character-based file input are correctly transferred to the
1178 start of the buffer at the next read.
1179 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1180 passing it through to OPEN.
1181 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1182 argument given to internal calls to OPEN.
1183 ** the built-in comment readers (introduced by character sequences
1184 ";" and "#|") are more forgiving to encoding errors; they will
1185 STYLE-WARN and then attempt to resync the stream at a character
1186 boundary. (thanks to Teemu Kalvas)
1187 * fixed some bugs in the x86-64 port:
1188 ** Negative short int return values from c-calls are sign-extended
1190 ** The stack is aligned to 16-bytes for c-calls, as required by
1191 the ABI. (thanks to Cheuksan Wang)
1192 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1193 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1194 for enums. (thanks to Vincent Arkesteijn)
1195 ** Multiple small optimizations and bugfixes for floating point
1197 * fixed some bugs revealed by Paul Dietz' test suite:
1198 ** Space, Tab, Linefeed, Return and Page have the invalid
1199 secondary constituent character trait.
1200 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1202 ** WITH-INPUT-FROM-STRING should only update the index place on
1204 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1205 works more reliably.
1206 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1207 with one-dimensional arrays with fill pointers.
1208 ** TYPE-OF failed on a complex with an integer realpart and a
1210 ** compiler failure during type inference for the code of form
1211 (IF (EQL X (THE ...)) ...) (MISC.535).
1213 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1214 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1215 platform. The port supports 61-bit fixnums, large memory spaces
1216 and reloading shared object files.
1217 * enhancement: saving cores with foreign code loaded is now
1218 supported on ppc/Darwin in addition to the previously supported
1220 * enhancement: the statistical profiler now walks deeper into the
1221 call stack for more meaningful call-graphs and accrued time
1222 reports (x86/x86-64 only). It also now reports time spent in
1224 * enhancement: it is now possible to trace most individual methods
1225 of a generic function in addition to tracing the generic function
1227 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1229 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1230 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1231 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1232 produces an error. (thanks to Vincent Arkesteijn)
1233 * bug fix: NAMESTRING on pathnames with :WILD components in their
1234 directories works correctly. (thanks to Artem V. Andreev)
1235 * fixed bug 125: compiler preserves identity of closures. (reported
1237 * bug fixed: functions with &REST arguments sometimes failed with
1238 "Undefined function" when compiled with (DEBUG 3). (reported by
1240 * bug fix: overflow during compiling of setting element of a bit
1241 vector with constant index and value. (reported by Timmy Douglas)
1242 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1243 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1244 * on x86 compiler partially supports stack allocation of dynamic-extent
1246 * GO and RETURN-FROM do not check the extent of their exit points
1247 when compiled with SAFETY 0.
1248 * fixed some bugs related to Unicode integration:
1249 ** encoding and decoding errors are now much more robustly
1250 handled; it should now be possible to recover even from invalid
1251 input or output to the terminal. (thanks to Teemu Kalvas)
1252 ** provided a first cut at implementing STRING-TO-OCTETS and
1253 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1254 ** altered the SB-MD5 contributed module slightly, changing the
1255 interface just enough for it to be supportable for builds where
1256 lisp characters are not eight bits.
1257 * fixed some bugs revealed by Paul Dietz' test suite:
1258 ** the FORMATTER-generated functions for ~V[ conditionals require
1259 the correct number of arguments.
1260 ** READ-FROM-STRING returns the mandated second value when applied
1261 to displaced strings.
1262 ** the #\Rubout and #\Backspace characters are treated as invalid
1263 constituent characters by the tokenizer.
1265 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1266 * new feature: reloading changed shared object files with
1267 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1268 * new feature: references to foreign variables and functions
1269 can now be compiled and loaded before the corresponding shared
1270 object file is loaded, as long as the foreign definitions are
1271 available at runtime.
1272 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1273 supported. (thanks to Dan Debertin)
1274 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1275 just keywords. (thanks to Vincent Arkesteijn)
1276 * fixed bug #331: structure-class instances corresponding to
1277 DEFSTRUCT forms are now created eagerly.
1278 * fixed bug #345: backtraces from calls to undefined functions work
1279 on x86 as well. Related bug #61 is now also partially fixed on x86
1280 (backtraces from throws to unknown catch tags.)
1281 * bug fix: lambda-list parsing is now stricter vrt. order and number
1282 of lambda-list keywords.
1283 * bug fix: as specified by AMOP, an error is signalled if a
1284 class-option appears multiple times in a DEFCLASS form. (reported
1286 * bug fix: RANDOM can be compiled when the compiler derives the type
1287 of its numeric argument as a disjoint set of small integers.
1288 (reported by Paul Dietz)
1289 * bug fix: starting a core saved with shared objects loaded when
1290 those objects are not available no longer causes threaded SBCL to
1291 hang. (reported by Sean Ross)
1292 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1294 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1295 argument, which must always be NIL. (reported by Kalle Niemitalo)
1296 * bug fix: printing 1.0d+23 no longer results in an error.
1297 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1298 * bug fix: structure slot setters preserve evaluation order. (thanks
1300 * fixed some bugs related to Unicode integration:
1301 ** RUN-PROGRAM can allow its child to take input from a Lisp
1302 stream. (reported by Stefan Scholl)
1303 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1304 locales. (reported by Ken Causey)
1305 * fixed some bugs revealed by Paul Dietz' test suite:
1306 ** INCF, DECF and REMF evaluate their place form as specified in
1308 ** FORMATTER expands ~{ ~} iteration directives with V or #
1309 parameters correctly.
1310 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1311 consequent uses no arguments correctly.
1312 ** the system has a partial understanding of the (COMPLEX RATIO)
1314 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1317 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1318 * new feature: a build-time option (controlled by the :SB-UNICODE
1319 keyword feature, enabled by default) for building the system with
1320 support for the entire 21-bit character space defined by the
1322 * new feature: the system now has rudimentary external-format
1323 support; the primary user-visible change at this time is that
1324 characters with the high bit set (such as lower-case-e-acute) will
1325 print correctly to a terminal in a UTF-8 environment.
1326 * minor incompatible change: BASE-CHAR no longer names a class;
1327 however, CHARACTER continues to do so, as required by ANSI.
1328 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1329 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1330 has been moved to the SB-EXT package (temporarily re-exported from
1332 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1333 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1335 * fixed bug #351: better error-handlind and reporting for malformed
1337 * fixed bug #350: bignum-printing is now more memory-efficient,
1338 allowing printing of very large bignums, eg. (expt 2 10000000).
1339 (reported by Bruno Haible)
1340 * fixed bug #302: better primitive-type selection for intersection
1342 * fixed bug #308: non-graphic characters now all have names, as
1343 required. (reported by Bruno Haible)
1344 * bug fix: redefining a class with different superclasses now correctly
1345 removes it from the direct-subclasses of its previous superclasses.
1346 (reported by David Morse)
1347 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1348 new value now works. (reported by Bruno Haible)
1349 * bug fix: correct canonicalization of multiple non-standard slot
1350 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1351 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1352 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1353 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1354 now exists, an signals an error.
1355 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1356 during macroexpansion for non-iteration variables as well. (reported
1357 by Bruno Haible for CMUCL)
1358 * bug fix: Cyclic structures and unprintable objects in compiler
1359 messages no longer cause errors. (reported by Bruno Haible)
1360 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1361 and READ-FROM-STRING all now return a primary value of NIL if
1362 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1363 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1364 (reported by Bruno Haible for CMUCL)
1365 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1366 do not designate a condition. (reported by Bruno Haible for
1368 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1369 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1370 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1371 permitting resolution in favour of any of the conflicting symbols.
1372 (reported by Bruno Haible for CMUCL)
1373 * bug fix: EQUAL compiler optimizations is less aggressive on
1374 strings which can potentially compare true despite having distinct
1375 specialized array element types.
1376 * bug fix: unit enumerations can be defined without dividing by
1377 zero. (thanks to Vincent Arkesteijn)
1378 * FORMAT compile-time argument count checking has been enhanced.
1379 (report from Bruno Haible for CMUCL)
1380 * a partial workaround for the bug 262: the compiler does not try to
1381 inline-expand a local function doing RETURN-FROM from a deleted
1382 BLOCK. (thanks to Peter Denno for the bug report and to David
1383 Wragg for the simple test case)
1384 * fixed some bugs revealed by Paul Dietz' test suite:
1385 ** RENAME-PACKAGE allows all package designators as new package
1387 ** constraint propagation and lambda variable substitution are
1388 more cautious in dealing with partially deleted code.
1389 ** compiler sometimes lost reoptimization passes.
1390 ** CERROR, given a condition as condition designator, passes its
1391 remaining arguments to the continue format control without
1393 ** Case-altering FORMAT directives work correctly on non-ASCII
1395 ** The REAL type specifier handles bounds outside the floating
1396 point ranges without signalling FLOATING-POINT-OVERFLOW.
1397 ** Functions with IR1-transformations can create intercomponent
1398 references to global functions.
1399 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1401 ** FORMAT ~R treats a nil value for its first parameter correctly.
1403 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1404 * enhancement: saving cores with foreign code loaded is now
1405 supported on x86/NetBSD and sparc/Linux in addition to the previously
1406 supported platforms.
1407 * bug fix: on some platforms repeated installations caused multiple
1408 copies of HTML documentation to be installed -- should not happen
1409 any more. (reported by Stefan Scholl)
1410 * bug fix: parsing self-recursive alien record types multiple times
1411 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1412 original patch by Helmut Eller for CMUCL)
1413 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1414 (thanks to Richard Kreuter)
1415 * bug fix: defining classes whose accessors are methods on existing
1416 generic functions in other (locked) packages no longer signals
1417 bogus package lock violations. (reported by François-René Rideau)
1418 * bug fix: special variables as DEFMETHOD parameters no longer have
1419 associated bogus type declarations. (reported by David Wragg and
1421 * bug fix: read-write consistency on streams of element-type
1422 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1423 * bug fix: redefiniton of the only method of a generic function with
1424 no DEFGENERIC no longer emits a full WARNING. In addition,
1425 redefinition of generic functions with no DEFGENERIC to an
1426 incompatible lambda list now signals an error. (thanks to Zach
1428 * bug fix: DEFGENERIC now works even when there's a function of the
1429 same name in an enclosing lexical environment. (thanks to Zach
1431 * fixed compiler failure, caused by instrumenting code during
1432 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1433 * optimization: added loop analysis and improved register allocation
1434 * fixed some bugs revealed by Paul Dietz' test suite:
1435 ** POSITION on displaced vectors with non-zero displacement
1436 returns the right answer.
1437 ** (SIMPLE-STRING) is a valid type specifier for sequence
1439 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1441 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1442 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1444 ** The justification version of the FORMAT ~< directive treats
1445 non-zero minpad parameter correctly.
1447 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1448 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1449 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1450 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1451 the supported interface.
1452 * new feature: Single-stepping of code compiled with DEBUG 2 or
1453 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1454 * new feature: saving cores with foreign code loaded is now
1455 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1456 Timothy Moore's work for CMUCL)
1457 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1458 parameters to * instead of NIL if no initform is supplied.
1459 (reported by Johan Bockgaard)
1460 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1461 correctly when FUNCALL appears as the car of the form. Note:
1462 despite this FUNCALL forms are not currently subject to
1463 compiler-macro expansion. (port of Raymond Toy's fix for the
1464 same from CMUCL, reported by Johan Bockgaard)
1465 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1466 (thanks for Teemu Kalvas)
1467 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1468 case instead of terminating the iteration (thanks for Julian
1469 Squires, Sean Champ and Raymond Toy)
1470 * bug fix: incorrect expansion of defgeneric that caused a style
1471 warning. (thanks for Zach Beane)
1472 * bug fix: slot accessor effective method computation works properly
1473 for classes with multiple non-standard applicable methods on
1474 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1475 * on x86 compiler supports stack allocation of results of LIST and
1476 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1477 CMUCL implementation by Gerd Moellmann)
1478 * fixed some bugs revealed by Paul Dietz' test suite:
1479 ** FORMAT strings with both the ~<~:;~> form of the justification
1480 directive and pretty-printing directives cause an error.
1482 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1483 * incompatible change: the internal functions
1484 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1485 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1486 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1487 instead of the old functions.
1488 * new feature: on platforms where "dladdr" is available foreign
1489 function names now appear in backtraces. (based on Helmut Eller's
1491 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1492 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1494 * documentation: ASDF manual is now distributed with SBCL.
1495 * bug fix: SBCL can now load its contributed modules with REQUIRE
1496 even if the system-provided entries have been removed from
1497 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1499 * bug fix: backtraces involving undefined functions or assembly
1500 routines are more informative. (thanks to Brian Downing)
1501 * bug fix: mutually referent alien structures now work correctly.
1502 (reported by Rick Taube)
1503 * bug fix: structures defined by WITH-ALIEN can be referred to
1504 within other definitions in the same WITH-ALIEN.
1505 * bug fix: division operators (MOD, TRUNCATE and the like) with
1506 constant zero divisors and integer dividends no longer generate
1508 * bug fix: provide default methods for INPUT-STREAM-P and
1509 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1510 * bug fix: improve the detection and resolution of MOP metacycles
1511 (where effective method computation depends on the generic function
1512 having its effective method computed). (reported by Bruno Haible)
1513 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1514 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1515 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1516 * bug fix: pathnames with relative directory components can be
1517 represented relative to default pathnames.
1518 * optimization: in taking the GCD of bignums, reduce the two bignums
1519 to approximately the same size (using Euclid's algorithm) before
1520 applying the more sophisticated binary GCD. (thanks to Juho
1522 * optimization: COUNT on bitvectors now operates word-at-a-time.
1523 * optimization: ASH with a positive, but not necessarily constant,
1524 (leftwards) shift, when in a modular context, is compiled to a
1526 * fixed some bugs revealed by Paul Dietz' test suite:
1527 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1528 if the corresponding argument is NIL.
1529 ** FORMAT directives accepting a minpad parameter treat negative
1531 ** literal commas as character parameters to FORMAT directives are
1533 ** literal spaces directly after ~<Newline> directives within a
1534 format-logical-block (~:< ~@:>) do not induce :FILL-style
1535 conditional newlines.
1536 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1537 as specified: it no longer includes conditional newlines).
1538 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1540 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1541 :PER-LINE-PREFIX argument does not evaluate to a string.
1543 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1544 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1545 the manual for details; for now, package locks can be disabled by
1546 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1547 if no major problems are found then it is likely that they will be
1548 compiled in unconditionally.
1549 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1550 unsupported operators on all platforms. To load a shared library
1551 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1552 object file, link it into a shared library outside of SBCL and
1553 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1555 * bug workaround: ROOM T and the GC were not working together
1556 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1557 reporting facility aren't preserved. That reporting has been
1558 disabled, so now until and unless someone figures out how to make it
1559 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1560 * minor incompatible change: as threatened around sbcl-0.8.0, the
1561 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1562 The symbols are also exported from SB-PCL for backwards
1563 compatibility, but more so than before SB-PCL should be treated as
1564 an implementation-internal package.
1565 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1567 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1568 It is known as of this release not to work on the Alpha, however.
1569 * fixed bug #167: errors signalled due to illegal syntax in method
1570 bodies are now more legible.
1571 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1572 designators and can hence be used with TYPEP.
1573 * fixed bug #333: CHECK-TYPE now ensures that the type error
1574 signalled, if any, has the right object to be accessed by
1575 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1576 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1577 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1579 * fixed bug #334: programmatic addition of slots using specialized
1580 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1581 and :ALLOCATION :CLASS slots.
1582 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1583 float exponents. (rereported by Peter Seibel)
1584 * fixed a bug: #\Space (and other whitespace characters) are no
1585 longer considered to be macro characters in standard syntax by
1586 GET-MACRO-CHARACTER.
1587 * fixed bug: initialization of condition class metaobjects no longer
1588 causes an instance of the condition to be created. (reported by
1590 * fixed bug: it is now possible to have slots such that
1591 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1592 description is neither :INSTANCE nor :CLASS.
1593 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1594 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1595 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1596 non-standard SLOT-DEFINITION-ALLOCATION values.
1597 * fixed bugs: various race conditions handling exiting threads.
1598 CL-PPCRE's thread torture test now passes.
1599 * fixed arguably-a-bug: GC time proportional to number of threads in
1600 system even when most of them are idle
1601 * optimization: improved performance of BIT and SBIT on bit-vectors.
1602 * .fasl file incompatibility: The fasl file version number has
1603 been incremented because of changes associated with package locks.
1605 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1606 * minor incompatible change: the system no longer provides
1607 optimization hints (conditions which are TYPEP
1608 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1609 mode; these hints are still emitted when higher SPEED optimization
1611 * new contrib module: a sampling profiler (profiling by statistical
1612 sampling, rather than by instrumenting functions) is available as
1613 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1614 * the behaviour of the standard function ED is now customizeable by
1615 third parties through a hook variable: see ED's documentation
1616 string for information on the protocol.
1617 * the compiler no longer emits efficiency notes for (FUNCALL X)
1618 when the type of X is uncertain under default optimization
1620 * fixed bug 276: mutating a binding of a specialized parameter to a
1621 method to something that is not TYPEP the specializer is now
1623 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1624 exhibit the required behaviour on the x86 platform. (thanks to
1625 Peter van Eynde, Eric Marsden and Bruno Haible)
1626 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1627 even for difficult arguments. (reported by Peter Graves)
1628 * fixed bug 141a: the backquote printer now descends quoted
1630 * fixed another bug in backquote printing: no more destructive
1631 modification of the form's list structure. (reported by Brian
1633 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1634 move between its address being taken and the call to
1635 interrupt_thread, fixing a crashing race condition.
1636 * the SB-POSIX contrib implementation has been adjusted so that it
1637 no longer exhibits ridiculously poor performance when constructing
1638 instances corresponding to C structs.
1640 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1641 * minor incompatible change: the sb-grovel contrib now treats C
1642 structures as alien (in the sense of SB-ALIEN) objects rather than
1643 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1644 has implications for memory management of client code
1645 (sb-grovel-returned objects must now be manually managed) and for
1646 type safety (alien objects now have full types).
1647 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1648 used to control emission of compiler diagnostics, rather than the
1649 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1650 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1651 quality should be considered deprecated.
1652 * install.sh now installs the user manual as well
1653 * (not quite a new documentable feature, but worth considering in
1654 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1655 beginnings of a semantically meaningful condition hierarchy is
1656 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1658 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1659 designator as the defaults argument.
1660 * fixed bug: Displaced arrays whose displaced-to array has become
1661 too small now cause ARRAY-DIMENSION to signal an error, providing
1662 for safer bounds-checking. (reported by Bruno Haible)
1663 * fixed bug: DEFCLASS slot definitions with identical :READER and
1664 :WRITER names now signal a reasonable error. (reported by Thomas
1666 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1668 * fixed bug: Invalid slot specification errors now print correctly.
1669 (thanks to Zach Beane)
1670 * fixed bug 320: Shared to local slot value transfers in class
1671 redefinitions now happen corrently from superclasses as
1672 well. (reported by Bruno Haible)
1673 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1675 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1676 improper lists correctly. (reported by Bruno Haible)
1677 * fixed bug 313: source-transform for <fun-name> was erroneously
1678 applied to a call of a value of a variable with name <fun-name>.
1679 (reported by Antonio Menezes Leitao)
1680 * fixed bug 307: The obsolete instance protocol ensures that
1681 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1682 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1683 remove dead unknown-values globs from the middle of the stack.
1684 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1685 easier to resume long computations after using *BREAK-ON-SIGNALS*
1686 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1687 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1688 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1689 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1690 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1691 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1693 * fixed a (fairly theoretical) bug in string printing: if
1694 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1695 does not have array-element-type equal to the most general string
1697 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1698 function name. (thanks to Nikodemus Siivola)
1699 * fixed bug: compile-time format string checker failed on
1700 non-closed ~{. (reported by Thomas F Burdick)
1701 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1702 don't warn on legal loop code involving more than one aggregate
1703 boolean. (thanks to Nikodemus Siivola)
1704 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1705 in keyword position to MAKE-PACKAGE was not being reported as
1707 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1708 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1710 * fixed bugs 280 and 312: the checking for multiple definitions in a
1711 file is less likely to become confused by uses of inline
1713 * fixed bug: the #S reader macro performs the keyword coercion
1714 specified for slot names. (reported by Kalle Niemitalo)
1715 * fixed bug: lambda lists may contain symbols whose names start with
1716 & but are not lambda-list-keywords; their occurrence triggers a
1718 * fixed bug 321: define-method-combination argument lambda lists do
1719 not cause invalid code to be generated when &optional or &aux
1720 variables have default values. (reported by Bruno Haible)
1721 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1722 have CLOS classes; this appears also to have fixed reported
1723 instability in stack exhaustion detection.
1724 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1725 MUFFLE-WARNING when no associated restart is present is now
1727 * optimization: rearranged the expansion of various defining macros
1728 so that each expands into only one top-level form in a
1729 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1731 * optimization: used a previously little-used slot in symbols to
1732 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1734 * fixed some bugs revealed by Paul Dietz' test suite:
1735 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1737 ** Fixed an optimization bug related to inheritance of initforms
1738 from local to shared slots.
1739 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1740 ** CAST optimizer forgot to flush argument derived type.
1741 ** print/read consistency on floats is now orders of magnitude
1742 more likely. (thanks also to Bruno Haible for a similar report
1744 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1745 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1746 for objects of type REAL. Make it so.
1747 ** SXHASH is specified (infelicitously) to respect similarity,
1748 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1749 it so. (thanks to Markus Ziegler)
1750 ** on the Alpha, the compiler succeeds in compiling functions
1751 returning a known number of arguments greater than 63.
1752 ** fixed handling of invalid NIL arguments in keyword position
1754 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1756 ** provided a readably-printable representation for RANDOM-STATE
1758 ** ensured that pathnames, where they have a namestring, always
1759 print using #P"..." syntax.
1761 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1762 * Support for the forthcoming 2.0 version of the NetBSD kernel
1763 running on x86 hardware has been added. (thanks to Perry
1764 E. Metzger most immediately, and others for their past work)
1765 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1766 current release version; SBCL's OpenBSD support had been broken
1767 since about the time of OpenBSD's switch to ELF binary format.)
1768 * [placeholder for DX summary]
1769 ** user code with &REST lists declared dynamic-extent, under high
1770 speed or space and low safety and debug optimization policy.
1771 * The manual has been converted to Texinfo format and the debugger
1772 chapter from the cmucl manual has been added.
1773 * A facility has been added to extract documentation strings from
1774 sbcl and store them as Texinfo-formatted snippets for inclusion in
1775 the manual (via Texinfo's @include directive)
1776 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1777 the test case to Dave Roberts)
1778 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1779 pointers. (reported by Sean Ross)
1780 * bug fix: PROFILE output is printed nicely even for large numerical
1781 values. (thanks to Zach Beane)
1782 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1783 greater than 32 handle EOF correctly.
1784 * bug fix: on X86 an immediate argument of the IMUL instruction is
1785 correctly printed in disassembly. (thanks to Lutz Euler)
1786 * bug fix: class slots in redefined classes preserve their old
1787 values. (thanks to Bruno Haible and Nikodemus Siivola)
1788 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1789 succeeds. (reported by Marco Baringer)
1790 * fixed some bugs revealed by Paul Dietz' test suite:
1791 ** READ-SEQUENCE now works on ECHO-STREAMs.
1792 ** RATIONALIZE works more according to its specification. (thanks
1795 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1796 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1797 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1798 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1799 should matter to you only if you rebind the printer control
1800 variables and then find you want different bindings in the
1801 debugger than in the ordinary execution of your program.)
1802 * The runtime build system has been tweaked to support building
1803 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1804 assembler and linker. (thanks to Nikodemus Siivola)
1805 * Unbound, undefined, undeclared variables now trigger full
1806 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1807 more often programmer error than deliberate exploitation of undefined
1809 * optimization: the hash algorithm for strings has changed to one
1810 that is less vulnerable to spurious collisions. (thanks to Juho
1812 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1813 needless bounds checking. (thanks to Juho Snellman)
1814 * optimization: implemented multiplication as a modular
1815 (UNSIGNED-BYTE 32) operation on the PPC backend.
1816 * fixed some bugs revealed by Paul Dietz' test suite:
1817 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1819 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1820 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1821 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1823 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1825 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1827 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1828 their output stream on EOF from read.
1829 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1830 have been read to end-of-file.
1831 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1833 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1834 description of determination of which consecutive characters
1836 ** Printing the "Space" character with escaping on now yields "#\\ ",
1837 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1838 ** Reading floating-point numbers with *READ-BASE* set to a number
1839 less than 10 works correctly.
1840 ** Reading floating-point numbers with *READ-BASE* set to a number
1841 more than 10 works correctly.
1842 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1843 the readtable currently in effect.
1845 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1846 * minor incompatible change: parsing of namestrings on a physical
1847 (Unix) host has changed; numbers after the final #\. in a
1848 namestring are no longer interpreted as a version field. This is
1849 intented to be largely invisible to the user, except that the
1850 meaning of the namestring "*.*.*" has changed: it now refers to a
1851 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1852 should usually be replaced by
1853 (make-pathname :name :wild :type :wild :version :wild)
1854 with the added benefit that this is more likely to be portable.
1855 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1856 option to OPEN now signals an error if the file being opened
1857 exists; this may have an impact on existing code.
1858 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1859 signals received, on the PowerPC platforms (both Linux and
1860 Darwin). (thanks to Pierre Mai for pointing out the location of
1862 * several fixes on OS X: The system now builds and runs cleanly on
1863 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1864 (thanks to Brian Mastenbrook)
1865 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1866 second-resolution: integer multiples of 1/3600 between -24 and 24.
1867 (thanks to Vincent Arkesteijn)
1868 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1869 type when called with 1 argument; PEEK-CHAR checked type of
1870 PEEK-TYPE only after having read first character from a
1871 stream. (reported by Peter Graves)
1872 * bug fix: the garbage collector now has much better locality
1873 behaviour, and in particular no longer treats all memory as being
1874 exhausted when many small objects point to each other in a deeply
1876 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1877 recognized as being TYPEP their class.
1878 * bug fix: the PUSHNEW documentation string has been corrected.
1879 (thanks to Vincent Arkesteijn)
1880 * bug fix: defaulting of the value for the last of an atypically
1881 large number of multiple values being bound was not being
1882 performed correctly on the Alpha or PPC platforms
1883 * optimization: implemented multiplication as a modular
1884 (UNSIGNED-BYTE 32) operation on the x86 backend.
1885 * optimization: SEARCH on simple-base-strings can now be open-coded.
1886 (see also contrib/compiler-extras.lisp for inspiration for
1887 teaching the compiler about the Boyer-Moore algorithm).
1888 * value, returned by MAX (and MIN) called with several EQUALP, but
1889 not EQL, arguments now does not depend on compiler settings.
1890 * fixed some bugs revealed by Paul Dietz' test suite:
1891 ** in stack analysis liveness information is propagated from
1892 non-local entry points.
1893 ** pathwise CAST removing failed when the CAST node did not start
1895 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1896 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1898 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1899 host is already defined.
1900 ** RENAME-FILE works on streams instead of signalling an internal
1902 ** PEEK-CHAR uses the current readtable when determining whether
1903 or not a character is whitespace.
1904 ** MERGE-PATHNAMES handles the case when the pathname does not
1905 specify a name while the default-pathname specifies a version.
1906 ** Pathnames now stand a better chance of respecting print/read
1908 ** Attempting to use standardized file system operators with a
1909 pathname with invalid :DIRECTORY components signals a
1911 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1913 ** DIRECTORY on logical pathnames is more correct.
1914 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1915 signal a TYPE-ERROR if their argument is not a stream.
1916 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1917 designator argument does not designate a stream.
1918 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1919 examining the synonym.
1920 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1922 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1923 element-type larger than ([UN]SIGNED-BYTE 32).
1925 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1926 * When built with the :SB-FUTEX feature, threaded builds now take
1927 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1928 for faster/more reliable mutex and condition variable support.
1929 * Incompatible change (but one you probably shouldn't have been using
1930 anyway): the interface and code for arbitrating between multiple
1931 threads in the same user session has been redesigned.
1932 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1933 error when called without an explicit environment argument.
1934 (thanks to Nikodemus Siivola)
1935 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1936 confused about their position. (thanks to Adam Warner and Gerd
1938 * bug fix: Pretty printing backquoted forms with unquotations in the
1939 argument list position of various code constructs such as LAMBDA
1940 now works correctly. (reported by Paul Dietz)
1941 * bug fix: Pretty printing unquotations no longer loses all
1942 stream position information.
1943 * optimization: performance of string output streams is now less
1944 poor for multiple small sequence writes.
1945 * optimization: performance of CSUBTYPEP in the presence of complex
1946 expressions involving CONS and NOT many times has been improved.
1947 (reported by Paul Dietz)
1948 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1950 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1951 streams for the REPL, for the debugger, and so on. (thanks to
1953 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1954 * fixed some bugs revealed by Paul Dietz' test suite:
1955 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1956 is ignored if it is too small, rather than propagating through
1957 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1958 ** extremely complex negations of CONS types were not being
1959 sufficiently canonicalized, leading to inconsistencies in
1961 ** VALUES tranformer lost derived type.
1963 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1964 * fixed a bootstrapping bug: the build process no longer assumes
1965 that the various BOOLE-related constants have the same value in
1966 host and target lisps. (noted by Paul Dietz' test suite on an
1967 SBCL binary built from CLISP)
1968 * The system can now be dynamically linked on the MIPS platform,
1969 which enables dynamic loading of foreign code from Lisp. (thanks
1970 to Ralf Baechle for discussions on the MIPS ABI)
1971 * The system now records debugging information for its own source
1972 files in a filesystem-position-independent manner, relative to
1973 the "SYS" logical host.
1974 * fixed a compiler bug: MV-LET convertion did not check references
1975 to the "max args" entry point. (reported by Brian Downing)
1976 * tweaked disassembly notes to be less confident about proclaiming
1977 some instruction as an LRA. (thanks to Brian Downing)
1978 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1979 now each have their own history, command character, and other
1980 characteristics. (thanks to David Lichteblau)
1981 * fixed some bugs revealed by Paul Dietz' test suite:
1982 ** compiler failure in compiling LOGAND expressions including a
1984 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1985 shift greater than 32.
1986 ** FLUSH-DEST did not mark blocks for type check regeneration.
1987 ** HANDLER-CASE failed to accept declarations in handler clauses
1988 in some circumstances.
1990 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1991 * New code in contrib/sb-introspect (still probably not entirely
1992 stable yet) provides some support for smart Lisp development
1993 environments like SLIME.
1994 * The conditions signalled for errors occurring when loading .fasl
1995 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1996 in a way which should help ASDF recover gracefully.
1997 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1998 stuff has been cleaned up. If you code contrib/ stuff, this might
1999 affect you, and you can look at contrib/README, contrib/STANDARDS,
2000 and/or the 0.8.4.27 diff to check.
2001 * In full calls the compiler now does not generate checks for declared
2002 argument types for all arguments.
2003 * various threading fixes
2004 ** and some experimental patches which didn't make it into
2005 the main tree for this release, but which are shipped in
2006 contrib/experimental-thread.patch as a possible fix for some
2007 failures (deadlock, spinning...) in GC-intensive multithreaded
2009 * fixed PPC build problem (source code incompatibility of different
2010 library versions): added offsetof() hackery which attempts to divine
2011 where glibc maintainers put uc_mcontext today
2012 * fixed bug 282: compiler does not trust type assertions while passing
2013 arguments to a full call.
2014 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2015 &OPTIONAL VALUES type parameter.
2016 * fix bug 214: algorithm for noting rejected templates is now more
2017 similar to that of template seletion. (also reported by rydis on
2019 * fixed bug 141b: printing backquoted information readably and prettily
2020 inserts a space where necessary.
2021 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2022 (CHARACTER 10) are now reported as errors, rather than propagated
2023 as unknown types. (reported by piso on #lisp)
2024 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2025 with values NIL and :ERROR. (thanks to Milan Zamazal)
2026 * fixed bug 191c: CLOS now does proper keyword argument checking as
2027 described in CLHS 7.6.5 and 7.6.5.1.
2028 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2029 longer raise an error; further, using a list as a for-as-arithmetic
2030 counter now raises a meaningful error.
2031 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2032 now understood by sequence creation functions such as MAKE-SEQUENCE
2034 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2035 a STRING-INPUT-STREAM.
2036 * compiler enhancement: SIGNUM is now better able to derive the type
2038 * type declarations inside WITH-SLOTS are checked. (reported by
2040 * fixed some bugs revealed by Paul Dietz' test suite:
2041 ** incorrect optimization of TRUNCATE for a positive first
2042 argument and negative second.
2043 ** compiler failure in let-convertion during flushing dead code.
2044 ** compiler failure while deriving type of TRUNCATE on an
2045 interval, containing 0.
2046 ** ASH of a negative bignum by a negative bignum count now returns
2048 ** intersection of CONS types now canonicalizes properly, fixing
2049 inconsistencies in SUBTYPEP.
2051 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2052 * incompatible change: The --disable-debugger command line
2053 option now clobbers the debugger at a more fundamental
2054 level, by redefining #'INVOKE-DEBUGGER instead of by
2055 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2056 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2057 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2058 enter the debugger REPL and then suffer recursive errors
2059 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2060 while under the new system, BREAK in --disable-debugger mode
2061 terminates the system just as an unhandled error would.
2062 * fixed compiler performance when processing loops with a step >1;
2063 * bug fix: DOCUMENTATION now retrieves generic function
2064 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2065 support has been systematized, and now supports the methods
2066 specified by ANSI, along with a default method and a method for
2067 slot documentation. (reported by Nathan Froyd)
2068 * bug fix: effective methods associated with a generic function are
2069 no longer cached over a change of that generic function's method
2070 combination. (reported by Andreas Fuchs)
2071 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2072 names a non-existent directory. (thanks to Andreas Fuchs)
2073 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2074 the PPC platform, lead to stack corruption; this has been fixed.
2075 (reported by Rainer Joswig)
2076 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2077 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2078 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2079 arithmetic in general, is now much more reliable on the PPC
2081 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2082 platform now returns the right answer.
2083 * optimization: restored some effective method precomputation in
2084 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2085 precomputation is now tunable.
2086 * optimization: compiler-internal data structure use has been
2087 reviewed, and changes have been made that should improve the
2088 performance of the compiler by about 20%.
2089 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2090 simple-base-strings and simple-bit-vectors is improved.
2091 * optimization: the optimization of 32-bit logical and arithmetic
2092 functions introduced in version 0.8.3 on the x86 has been
2093 implemented on the mips, ppc and sparc platforms; an
2094 implementation of the same facility, but for 64-bit arithmetic,
2095 has been added for the alpha.
2096 * microoptimization: the compiler is better able to make use of the
2097 x86 LEA instruction for multiplication by constants.
2098 * bug fix: in some situations compiler did not report usage of
2099 generic arithmetic in (SPEED 3) policy.
2100 * bug 145b fix: compiler used wrong type specifier while converting
2101 MEMBER-types to numeric.
2102 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2104 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2105 index argument now works properly on the Alpha platform.
2106 * bug fix: floating point exception treatment on the Alpha platform
2108 * bug fix: FILE-POSITION works much better on string input and
2109 output streams. (thanks to Nikodemus Siivola)
2110 * bug fix: many threading/garbage collection symptoms sorted.
2111 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2112 might be pseudo-atomic.
2113 * internal change: Stopping for GC is now done with signals not
2114 ptrace. GC is now done in whichever thread wanted it, instead of
2116 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2118 * bug fix: result form in DO is not contained in the implicit
2120 * incompatible change: ICR structure is changed; the value part of
2121 CONTINUATION is now called LVAR; corresponding functions are
2122 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2123 * added type deriver for ISQRT (thanks to Robert E. Brown).
2124 * bug fix: better support for loading from the command line when an
2125 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2127 * fixed some bugs revealed by Paul Dietz' test suite:
2128 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2129 ** ROUND and FROUND now give the right answer when given very
2130 small float arguments.
2131 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2133 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2134 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2135 ** LCM should return a non-negative integer.
2136 ** PARSE-INTEGER returned the index of a terminator instead of the
2137 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2138 ** PARSE-INTEGER returned an incorrect index being applied to a
2140 ** LCM with two arguments of 0 returns 0 rather than signalling
2142 ** unsigned addition of a 32-bit constant with the high bit set no
2143 longer causes an internal compiler error on the x86.
2144 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2145 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2146 with negative last argument.
2147 ** byte specifiers with zero size and position no longer cause
2148 an error during type derivation.
2149 ** bignum multiplication on the Alpha platform now returns the
2151 * porting: The system now builds on SuSE AMD64, although it still
2152 generates a 32-bit binary.
2153 * .fasl file incompatibility: The fasl file version number has
2154 been incremented (because of the changes to internal compiler
2155 data structures referred to above).
2157 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2158 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2159 more accurately, on the Darwin kernel running on PowerPC hardware.
2160 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2161 * Compiler code deletion notes now signal a condition of type
2162 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2163 an associated MUFFLE-WARNING restart.
2164 * The compiler now performs limited argument count validation of
2165 constant format strings in FORMAT, and where appropriate in ERROR,
2166 CERROR and WARN. (thanks to Gerd Moellmann)
2167 * New ASDF-INSTALL contrib can be used for automatic download and
2168 installation of third-party Lisp code from CCLAN or other sites
2170 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2171 which forces another thread to execute a function supplied by the
2173 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2174 now accept and act upon their :ELEMENT-TYPE keyword argument.
2175 (reported by Martin Atzmueller, Edi Weitz)
2176 * bug fix: FILE-POSITION now accepts position designators up to
2177 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2178 is the greater. (thanks to Patrik Nordebo)
2179 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2180 Kalle Olavi Niemitalo)
2181 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2182 printable. (reported by Eric Marsden)
2183 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2184 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2185 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2186 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2187 (thanks to Stig Sandoe)
2188 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2189 UNREAD-CHAR now correctly includes the unread character in the
2190 target sequence. (thanks to Gerd Moellmann)
2191 * bug fix in threaded builds: the system can now be suspended and
2192 resumed by shell job control with minimal disruption.
2193 * bug fixes in times and timezones >2038AD
2194 * better handling of "where is GNU make?" problem in build scripts
2195 (thanks to Nikodemus Siivola)
2196 * new optimization: inside a named function any reference to a
2197 function with the same name is considered to be a self-reference;
2198 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2199 optimization quality.
2200 * new optimization on x86: logical functions and + now have
2201 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2202 used when the result is truncated to 32 bits.
2203 * VALUES declaration is partially enabled.
2204 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2205 * fixed some bugs revealed by Paul Dietz' test suite:
2206 ** The system now obeys the constraint imposed by
2207 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2208 types form a lattice under type intersection.
2209 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2210 ** ASSOC now ignores NIL elements in an alist.
2211 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2212 and (1+ MOST-POSITIVE-FIXNUM) answers.
2213 ** The addition of a method with invalid qualifiers to a generic
2214 function does not cause an error to be signalled immediately;
2215 a warning is signalled, and the error is generated only on
2216 calling the generic function.
2217 * changed .fasl file version number, in part to add type codes for
2218 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2219 obscure ANSI requirements
2221 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2222 * fixed bug 148: failure to inline-expand a local function left
2223 garbage, confusing the compiler.
2224 * fixed bugs 3cd: structure slot readers perform type check if the
2225 slot can have an invalid value (i.e. it is either not initialized
2226 or can be written with a less specific slot writer).
2227 * bug fix: the compiler now traps array references to elements off
2228 the end of an array; previously, the bounds checking in some
2229 circumstances could go off-by-one.
2230 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2232 * type declarations for array element types now obey the description
2233 on the CLHS page "Declaration TYPE", as per discussions on
2234 sbcl-help around 2003-05-08. This means that a declaration
2235 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2236 declaration, all references to BAR will be asserted or assumed
2237 (with THE, so dependent on compiler policy) to involve objects of
2238 type FOO. Note that no such declaration is implied in
2239 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2240 * declared types of functions from the "Conditions"
2241 chapter. (reported by Paul Dietz)
2242 * bug fix: CERROR accepts a function as its first argument.
2243 * bug fix: NTH an NTHCDR accept a bignum as index
2244 arguments. (reported by Adam Warner)
2245 * optimization: character compare routines now optimize comparing
2246 against a constant character. (reported by Gilbert Baumann)
2247 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2248 argument now works properly on the MIPS platform.
2249 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2250 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2251 declared to have a functional type, does not cause an error
2253 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2254 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2255 * fixed bug: if last continuation of a deleted block has a
2256 destination, this destination should be deleted too. (reported by
2258 * fixed a bug in the bootstrap process: the host compiler's values
2259 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2260 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2261 test case from Patrik Nordebo)
2262 * improved the ability of the disassembler on the PPC platform to
2263 provide helpful disassembly notes.
2264 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2265 the class in more cases than previously.
2266 * bug fix: FILE-POSITION now understands :START and :END for
2267 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2268 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2269 8) data. (thanks to David Lichteblau)
2270 * bug fix: it is possible to add a method to a generic function
2271 without lambda list.
2272 * bug fix: reader failed to signal END-OF-FILE inside an
2273 object representation. (reported by Nikodemus Siivola)
2274 * fixed some bugs revealed by Paul Dietz' test suite:
2275 ** LAST and [N]BUTLAST should accept a bignum.
2276 ** condition slot accessors are methods.
2277 ** (VECTOR NIL) is a subtype of STRING.
2279 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2280 * minor incompatible change: some nonsensical specialized lambda
2281 lists (used in DEFMETHOD) which were previously ignored now signal
2283 * minor incompatible change: the system is now aware of the types of
2284 variables in the COMMON-LISP package, and will signal errors for
2285 most violations of these type constraints (where previously they
2286 were silently accepted).
2287 * minor incompatible change: COMPILE-FILE now uses the freedom
2288 afforded (ANSI 3.2.2.3) to use derived function types for
2289 functions defined in the same file. This also permits the system
2290 to warn on static type mismatches and function
2291 redefinition. (Currently it does not work with high DEBUG level.)
2292 * minor incompatible change: VALUES declaration is disabled.
2293 * When issuing notes, the compiler now signals a condition of type
2294 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2295 restart for use in user handlers. It is expected that the
2296 COMPILER-NOTE condition will eventually become a condition
2297 supertype to a hierarchy of note types, which will then be
2298 handleable in a similar fashion. However, at the moment, no such
2299 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2300 but it's an implementation detail, not a classification for the
2302 * Changes in type checking closed the following bugs:
2303 ** type checking of unused values (192b, 194d, 203);
2304 ** template selection based on unsafe type assertions (192c, 236);
2305 ** type checking in branches (194bc).
2306 * A short form of VALUES type specifier has ANSI meaning (it has
2307 increased the number of situations when SBCL cannot perform type
2309 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2310 keywords or constants is permissible.
2311 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2312 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2313 classes. (thanks to Antonio Martinez)
2314 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2315 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2316 argument to a pretty-print stream. Instead, it leaves any such
2317 operations to DESCRIBE-OBJECT methods.
2318 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2320 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2321 lambda lists. (thanks to David Lichteblau)
2322 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2323 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2324 (thanks to Gerd Moellmann)
2325 * fixed bug 246: increased compilation speed of long
2326 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2328 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2330 * DEFCONSTANT now throws a condition of type
2331 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2332 constant to a non-EQL value; CONTINUE and ABORT restarts
2333 respectively change and preserve the value.
2334 * fixed bug 63: The code walker, part of the implementation of CLOS,
2335 is now better at handling symbol macros.
2336 * bug fix: There is no longer an internal implementation type named
2337 CL:LENGTH. (reported by Raymond Toy)
2338 * bug fix: In macro-like defining macros/special operators the
2339 implicit block does not enclose the lambda list.
2340 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2341 enclosed in parentheses) are not suitable as type specifiers, and
2342 their use properly signals an error now.
2343 * bug fix: An argument count mismatch for a type specifier in code
2344 being compiled no longer causes an unhandled error at compile
2345 time, but signals a compile-time warning.
2346 * fixed simple vector readable printing
2347 * bug fix: DESCRIBE takes more care over whether the class
2348 precedence list slot of a class is bound before accessing it.
2349 (reported by Markus Krummenacker)
2350 * bug fix: FORMATTER can successfully compile pretty-printer format
2351 strings which use variants of the ~* directive inside.
2352 * bug fix: SEARCH now applies its TEST predicate to the elements of
2353 the arguments in the correct order. (thanks to Wolfhard Buss)
2354 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2355 in type inference. (thanks to Robert E. Brown)
2356 * bug fix: Reading in symbols with an explicit package name of ""
2357 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2358 * fixed some bugs revealed by Paul Dietz' test suite:
2359 ** NIL is now allowed as a structure slot name.
2360 ** Arbitrary numbers, not just REALs, are allowed in certain
2361 circumstances in LOOP for-as-arithmetic clauses.
2362 ** Multiple class redefinitions before slot access no longer
2363 causes a type error.
2364 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2365 association between the name and a class.
2366 ** Generic functions with non-standard method-combination and over
2367 five methods all of which return constants no longer return NIL
2368 after the first few invocations. (thanks to Gerd Moellmann)
2369 ** CALL-NEXT-METHOD with no arguments now passes the original
2370 values of the arguments, even in the presence of assignment.
2371 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2373 ** DISASSEMBLE works with closures and funcallable instances.
2374 ** ADD-METHOD now returns the generic function, not the new method.
2375 ** FIND-METHOD signals an error if the lengths of the specializers
2376 is incompatible with the generic function, even if the ERRORP
2378 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2379 which its argument is a member.
2380 ** DEFCLASS only redefines the class named by its class-name
2381 argument if that name is the proper name of the class;
2382 otherwise, it creates a new class.
2383 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2384 of the UNBOUND-SLOT condition to the name of the slot.
2385 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2386 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2387 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2388 SLOT-MAKUNBOUND in the specified fashion.
2390 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2391 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2392 cross-compilation host. As a consequence, we can now bootstrap our
2393 way up to SBCL starting with a bare gcc toolchain and human-readable
2394 source code (first the source to CLISP, then the source to SBCL).
2395 * A contributed module containing a partial implementation of the
2396 simple-streams interface has been included. (thanks to Rudi
2398 * A contributed module implementing the RFC1321 Message Digest
2399 Algorithm, known as MD5, has been included.
2400 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2401 no longer has any effect, as the code controlled by this feature
2402 has been deleted. (As far as we know, no-one has ever built using
2403 this feature, and its semantics were confused in any case).
2404 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2405 work on conditions (as required by the ANSI specification),
2406 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2407 expected behaviour on conditions. Users should note, however,
2408 that such behaviour is not required by the ANSI specification,
2409 and so use of this behaviour may render their code unportable.
2410 * fixed some bugs revealed by Paul Dietz' test suite:
2411 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2413 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2414 ** SXHASH on condition objects no longer returns NIL.
2415 ** :ALLOCATION :CLASS slots are better treated; their values are
2416 updated on class redefinition, and initforms inherited from
2417 superclasses are applied.
2418 ** REMOVE-METHOD returns its generic function argument even when
2419 no method was removed.
2420 ** SHARED-INITIALIZE now initializes the values of the requested
2421 slots, including those with :ALLOCATION :CLASS.
2422 ** ALLOCATE-INSTANCE now works on structure classes defined via
2423 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2425 ** SLOT-EXISTS-P now works on conditions, as well as structures
2427 ** MAKE-LOAD-FORM now has the required methods on
2428 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2429 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2430 keyword, and now implements the SLOT-NAMES argument.
2431 ** methods with &OPTIONAL arguments no longer allow too many
2432 arguments to be passed in the call without error.
2433 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2434 option is consistent with the required arguments of the generic
2435 function lambda list.
2436 * bug fix: REQUIRE accepts a string designator. (Thanks to
2438 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2439 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2440 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2441 * bug fix: The compiler now checks for duplicated variables in macro
2443 * bug fix: SETQ on globals returns the correct value.
2444 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2445 not a COMPILER-ERROR (followed by some other strange error on
2446 choosing the CONTINUE restart).
2447 * bug fix: make.sh and friends are now more consistent in the way that
2448 they look for GNU "make".
2450 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2451 * experimental native threads support (on x86 Linux >=2.4 only).
2452 This is not compiled in by default: you need to add :SB-THREAD to
2453 the target features. See the "Beyond ANSI" chapter of the manual
2455 * fix for longstanding nonANSIism: The old distinction between
2456 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2457 The return value from CL:FIND-CLASS is now a CLOS class, and
2458 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2459 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2460 * An interface to the MetaObject Protocol, as described in Kiczales,
2461 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2462 MIT Press, 1991, is available from the SB-MOP package.
2463 * incompatible change: the SB-PCL package should now be considered
2464 a private implementation detail, and no longer a semi-private MOP
2466 * minor incompatible change: due to rearrangement for threads, the
2467 control stack and binding stack are now allocated at arbitrary
2468 addresses instead of being hardcoded per-port. Users affected by
2469 this probably have to be doing advanced things with shared
2470 libraries, and will know who they are.
2471 * minor incompatible change: Previously, all --eval forms used were
2472 processed with READ before any of them were processed with EVAL.
2473 Now each --eval form is processed with both READ and EVAL before
2474 the next --eval form is processed. (Thus package operations like
2475 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2476 work as the user might reasonably expect.)
2477 * minor incompatible change: *STANDARD-INPUT* is now only an
2478 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2480 * minor incompatible change: Y-OR-N-P is now character-oriented,
2481 not line oriented. Also, YES-OR-NO-P now works without errors.
2482 (thanks to Antonio Martinez)
2483 * sb-aclrepl module improvements: an integrated inspector, added
2484 repl features, and a bug fix to :trace command.
2485 * Known functions, which cannot be open coded by the backend, are
2486 considered to be able to check types of their arguments. (fixing
2487 a bug report by Nathan J. Froyd)
2488 * fixed a bug in computing method discriminating functions: It is
2489 now possible to define methods specialized on classes which have
2490 forward-referenced superclasses. (thanks to Gerd Moellmann)
2491 * fixed evaluation order in optional entries (reported by Gilbert
2493 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2494 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2495 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2496 required-by-AMOP NAME argument, as well as CLASS and
2497 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2498 * fixed bug 20: DEFMETHOD can define methods using names that are
2499 not the proper names of classes to designate class specializers.
2500 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2501 Unix file descriptors, instead of blowing up. (thanks to Antonio
2503 * Garbage collection refactoring: user-visible change is that a
2504 call to the GC function during WITHOUT-GCING will not do garbage
2505 collection until the end of the WITHOUT-GCING. If you were doing
2506 this you were probably losing anyway.
2507 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2508 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2509 TYPEP the latter but not the former.
2510 * The compiler issues a full WARNING for calls to undefined functions
2511 with names from the CL package.
2512 * MAP-INTO for a vector destination is open coded. (reported by
2513 Brian Downing on c.l.l)
2514 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2515 documentation string.
2516 * fixed some bugs revealed by Paul Dietz' test suite:
2517 ** COPY-ALIST now signals an error if its argument is a dotted
2519 ** Condition slots are now accessed more correctly in the presence
2520 of multiple initargs for a given slot.
2521 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2522 exclude restarts of the same name associated with a different
2524 ** DEFCLASS of forward-referenced classes with another
2525 forward-referenced class in the superclasses list no longer
2527 ** Condition slots are now initialized once each, not multiple
2528 times. (thanks to Gerd Moellmann)
2529 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2531 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2532 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2533 arguments contain duplicated elements.
2534 ** RESTART-CASE understands local macros.
2535 ** RESTART-CASE associates exactly its own restarts with a condition.
2536 ** ENDP in safe mode checks its argument to be of type LIST.
2537 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2538 in question is unbound.
2539 ** Optimized MAKE-INSTANCE functions no longer cause internal
2540 assertion failures in the presence of duplicate initargs.
2541 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2542 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2543 propagated even in the ctor optimized implementation of
2545 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2547 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2548 * a better implementation of SXHASH on (simple) bit vectors,
2549 measured both in execution speed and in distribution of results
2550 over the positive fixnums, has been installed. Likewise, a better
2551 implementation of EQUAL for simple bit vectors is now available.
2552 * fixed CEILING optimization for a divisor of form 2^k.
2553 * fixed bug 240 (emitting extra style warnings "using the lexical
2554 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2555 by Antonio Martinez)
2556 * fixed SXHASH, giving different results for NIL depending on type
2557 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2558 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2559 variable. (found by Rolf Wester)
2560 * SBCL does not ignore type declarations for special
2561 variables. (reported by rif on c.l.l 2003-03-05)
2562 * some bug fixes in contrib/sb-aclrepl/
2563 * fixed some bugs revealed by Paul Dietz' test suite:
2564 ** a bug in the CONS type specifier, whereby the CAR and CDR
2565 types got intertwined, has been fixed;
2566 ** the type system is now able to reason about the interaction
2567 between INTEGER and RATIO types more completely;
2568 ** APPEND, [N]REVERSE and NRECONC check that those their
2569 arguments, which must be proper lists, are really so;
2570 ** An array specialized to be unable to hold elements has been
2571 implemented, as required -- yes, really -- by ANSI;
2572 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2573 on malformed property lists;
2575 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2576 * incompatible packaging change: in line with Unix convention,
2577 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2578 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2579 * REQUIRE and PROVIDE are now optionally capable of doing something
2580 useful. See the documentation string for REQUIRE.
2581 * infrastructure for a managed SBCL contrib system: contributed
2582 modules in this release include:
2583 ** the ASDF system definition facility;
2584 ** an interface to the BSD Sockets API;
2585 ** an ACL-like convenience interface to the repl;
2586 (thanks to Kevin Rosenberg)
2587 ** an implementation of ROTATE-BYTE, with efficient implementation
2589 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2590 gives a closer approximation to the right answer than previously.
2591 (thanks to Raymond Toy)
2592 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2593 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2594 optional environment arguments, as required by ANSI.
2595 * fixed bugs in other functions taking environment objects, allowing
2596 calls with an explicit NIL environment argument to be compiled
2598 * fixed bug 228: primary return values from
2599 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2600 COMPILE or FUNCTION.
2601 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2602 :TYPE will no longer signal errors on innocuous objects.
2603 * fixed bug 231b: SETQ is better at respecting type declarations in
2604 the lexical environment.
2605 * fixed a bug in DEFCLASS: classes named by symbols with no or
2606 unprintable packages can now be defined.
2607 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2608 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2609 * fixed compiler failure related to checking types of functions.
2610 (reported by Robert E. Brown)
2611 * the compiler is now much more consistent in its error-checking
2612 treatment of bounding index arguments to sequence functions: in
2613 (SAFETY 3) code, errors will be signalled in almost all cases if
2614 invalid sequence bounding indices are passed to functions defined
2615 by ANSI to operate on sequences.
2616 * fixed a bug in the build procedure: documentation of SBCL-specific
2617 packages is now preserved and available in the final Lisp image.
2618 * lifted FDEFINITION lookup out of loops in the implementation of
2619 many list operations. (thanks to Robert E. Brown)
2620 * fixed a bug in the reader: the #n# reader macro now works for
2621 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2622 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2623 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2624 E. Brown and Tony Martinez respectively)
2625 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2626 SLOT-BOUNDP: in particular, it is now able to optimize them much
2627 better, and is now not vulnerable to having packages renamed.
2628 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2629 always called when a slot is not present in an instance. (thanks
2631 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2632 longer signal an error on unreading a character following EOF on
2633 the previous constituent stream. (thanks to Tony Martinez)
2634 * fixed some bugs revealed by Paul Dietz' test suite:
2635 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2636 not just nonnegative fixnums;
2637 ** the logical bit-array operators such as BIT-AND now accept an
2638 explicit NIL for their "opt-arg" argument (to indicate a
2639 freshly-consed result bit-array);
2640 ** ELT now signals an error on an invalid sequence index in safe
2642 ** the type system is now cleverer about negations of numeric
2643 types, and consequently understands the BIGNUM and RATIO types
2645 ** the type system is now cleverer about the interaction between
2646 INTEGER and RATIO types: while bugs still remain, many more
2647 cases are accurately computed;
2648 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2649 if it is in the last clause;
2650 ** CONSTANTLY now correctly returns a side-effect-free function in
2652 ** DECLARE is no longer treated as a special-operator; in
2653 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2654 * incremented fasl file version number due to the change in the
2655 DEFSTRUCT-SLOT-DESCRIPTION structure.
2657 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2658 * minor incompatible change: code processed by the "interpreter" or
2659 EVAL now has a compilation optimization policy of (DEBUG 2)
2660 (changed from (DEBUG 1)) to improve debuggability of interactive
2661 development, and to allow the use of the debug RETURN command in
2663 * an experimental implementation of the RETURN command for the
2664 debugger has been included. (thanks to Frederik Kuivinen)
2665 * fixed bug 62: constraints were not propagated into a loop.
2666 * fixed bug in embedded calls of SORT (reported and investigated by
2668 * fixed some bugs revealed by Paul Dietz' test suite:
2669 ** printing and reading of arrays with some dimensions having
2670 length 0 (thanks to Gerd Moellmann);
2671 ** BOA constructor with &AUX argument without a default value does
2672 not cause a type error;
2673 ** CONSTANTP now returns true for all self-evaluating objects.
2675 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2676 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2677 accessors that are related by inheritance, as specified in the
2678 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2679 Valtteri Vuorikoski)
2680 * The compiler is now able to inline functions that were defined in
2681 a complex lexical environment (e.g. inside a MACROLET).
2682 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2684 * Support for the upcoming FreeBSD-5.0 release has been included.
2685 (thanks to Dag-Erling Smorgrav)
2686 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2687 effect when it is not in a toplevel context.
2688 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2689 stand a better chance of being correct. (thanks to Gerd
2691 * fixed bug in COERCE, which now signals an error on coercing a
2692 rational to a bounded real type which excludes the expected
2694 * The compiler is now able to derive types more accurately from the
2695 COERCE and COMPILE functions.
2696 * fixed bug 223: functional binding is considered to be constant
2697 only for symbols in the CL package.
2698 * fixed bug 231: SETQ did not check the type of a variable being set
2699 (reported by Robert E. Brown)
2700 * A new optimization for MAKE-INSTANCE has been included, fixing
2701 various bugs (including relating to :ALLOCATION :CLASS slots and
2702 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2704 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2705 ** As required by ANSI, LOOP now disallows anonymous collection
2706 clauses such as COLLECT I in conjunction with aggregate boolean
2707 clauses such as THEREIS (= I 1);
2708 ** LOOP now signals an error when any variable is reused in the
2709 same loop (including the potentially useful construct analogous
2710 to WITH A = 1 WITH A = (1+ A);
2711 ** IT is only a special loop symbol within the first clause of a
2712 conditional loop clause;
2713 ** LOOP with a typed iteration variable over a hashtable now
2714 signals a type error iff it should.
2715 * fixed some other bugs revealed by Paul Dietz' test suite:
2716 ** FILE-STREAM now names the class previously known as FD-STREAM;
2717 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2718 argument) no longer signals an error;
2719 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2720 of the slot symbol, rather than using the current package
2721 ((:CONC-NAME "") continues to intern the slot's name in the
2723 * incremented fasl file version number, because of the incompatible
2724 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2725 of the new implementation of DEFINE-COMPILER-MACRO.
2727 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2728 * Support for building SBCL for MIPS platforms running in
2729 little-endian mode has now been checked in, and basic
2730 functionality on said platforms verified.
2731 * minor incompatible change: PCL now records the pathname of a file
2732 in which methods and the like are defined, rather than its
2734 * minor incompatible change: TRUENAME now considers the truename of
2735 a file naming a directory to be the pathname with :DIRECTORY
2736 component indicating that directory.
2737 * minor incompatible change: a NAMED clause in the extended form of
2738 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2739 reason for the previous behaviour is unclear.
2740 * more systematization and improvement of CLOS and MOP conformance
2741 in PCL (thanks to Gerd Moellman and Pierre Mai):
2742 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2744 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2745 primary methods with no specializers;
2746 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2748 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2749 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2750 FORWARD-REFERENCED-CLASSes; error reporting on
2751 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2753 ** SXHASH on CLOS instances now uses a slot internal to the
2754 instance to return different numbers on distinct instances,
2755 while preserving the same return value through invocations of
2757 ** DEFMETHOD signals errors when methods with longer incongruent
2758 lambda lists are added to generic functions;
2759 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2760 CLASS, as specified in AMOP;
2761 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2762 on the order returned by the primary method for classes of
2763 class STANDARD-CLASS;
2764 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2765 * fixed some bugs shown by Paul Dietz' test suite:
2766 ** DOLIST puts its body in TAGBODY;
2767 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2769 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2770 value producing form;
2771 ** if more variables are given to PROGV than values, extra
2772 variables are bound and made to have no value;
2773 ** NSUBSTITUTE on list arguments gets the right answer with
2775 ** ELT signals an error of type TYPE-ERROR when the index argument
2776 is not a valid sequence index;
2777 ** LOOP signals (at macroexpansion time) an error of type
2778 PROGRAM-ERROR when duplicate variable names are found;
2779 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2780 ** FUNCALL of special-operators now cause an error of type
2782 ** PSETQ now works as required in the presence of side-effecting
2783 symbol-macro places;
2784 ** NCONC accepts any object as its last argument;
2785 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2787 ** loop-for-as-package does not require a package to be explicitely
2789 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2791 * fixed bug 166: compiler preserves "there is a way to go"
2792 invariant when deleting code.
2793 * fixed bug 172: macro lambda lists with required arguments after
2794 &REST arguments now cause an error to be signalled. (thanks to
2796 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2797 bug. (thanks to Matthew Danish)
2798 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2800 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2801 arguments are lexically rebound. (thanks to Gerd Moellmann and
2803 * fixed bug 194: error messages are now more informative when there
2804 is no primary method applicable in a call to a generic
2805 function. (thanks to Gerd Moellmann)
2806 * fixed bug in command line argument checking (thanks to Julian
2808 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2809 (thanks to Matthew Danish)
2810 * incremented fasl file version number, because of the
2811 SXHASH-related changes in the layout of CLOS data structures
2813 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2814 * minor incompatible change: The runtime (the Unix executable named
2815 "sbcl") is now much pickier about the .core files it will load.
2816 Essentially it now requires .core files to descend from the same
2817 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2818 as the runtime does. (The intent is to prevent the crashes which
2819 can occur, and which can even be reported as mysterious failures,
2820 when people patch the sources or change the build parameters
2821 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2822 sbcl and .core files.)
2823 * fixed bug: VALUES-LIST is no longer optimized away.
2824 * fixed bug 142: The FFI conversion of C string values to Lisp
2825 string values no longer conses excessively. (thanks to Nathan
2826 Froyd porting Raymond Toy's fix to CMU CL)
2827 * began to systematize and improve MOP conformance in PCL (thanks to
2828 Nathan Froyd, Gerd Moellman and Pierre Mai):
2829 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2831 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2832 ** FINALIZE-INHERITANCE is now called on class finalization;
2833 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2834 argument precedence order.
2835 * fixed bug 202: The compiler no longer fails on functions whose
2836 derived types contradict their declared type.
2837 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2838 so it can be non-toplevel.
2839 * The fasl file version number has changed (because of the new
2840 implementation of DEFMACRO).
2841 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2842 safe code, that any length requirement by their type-specifier
2843 argument is valid. The exceptions to this are described in bug
2845 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2846 functions now check the types of their inputs as required by ANSI.
2847 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2848 introduced symbol is DECLAREd to be SPECIAL.
2849 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2850 * fixed bug: :COUNT argument to sequence functions may be negative
2851 * fixed bug: body of DO-SYMBOLS may contain declarations
2852 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2853 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2854 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2855 symbol macro only once
2856 * fixed printing of call frame when argument list is unavailable
2857 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2858 * compiler no longer signals WARNING on unknown keyword
2861 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2862 * A beta-quality port to the mips architecture running Linux,
2863 based on the old CMUCL backend, has been made. It has been tested
2864 on a big-endian kernel, and works sufficiently well to be able to
2865 rebuild itself; it has not been tested in little-endian mode.
2866 * fixed an inconsistency between gencgc.c and purify.c which made
2867 dumping/loading .core files unreliable
2868 * fixed bug 120a: The compiler now deals correctly with IFs where
2869 the consequent is the same as the alternative, instead of
2870 misderiving the return type. (thanks to Alexey Dejneka)
2871 * fixed bug 113: Logical pathnames are now dumpable (the logical
2872 host is resolved at load-time, throwing an error if it is not
2874 * fixed bug 174: FORMAT's error message is slightly clearer when a
2875 non-printing character is used in a format directive.
2876 * fixed several bugs in compiler checking of type declarations, i.e.
2877 violations of the Python "declarations are assertions" principle
2878 (thanks to Alexey Dejneka)
2879 * fixed several bugs in PCL's error checking (thanks to Gerd
2881 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2883 * fixed bug in compilation of functions as first class values
2884 (thanks to Antonio Martinez-Shotton)
2885 * The compiler's handling TYPE-ERRORs which it can prove will
2886 inevitably happen at runtime has been cleaned up and corrected
2887 in several ways. (thanks to Alexey Dejneka)
2888 * improved argument type checking for various basic arithmetic
2889 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2890 lavished on them in the past that they can be compiled in many
2891 ways in different special cases
2892 * fixed bug 181: compiler checks validity of user supplied type
2894 * cleaned up code flushing in optimization: Function calls which
2895 should signal errors for safety purposes (e.g. which ANSI says
2896 should signal errors when their arguments are of incorrect type)
2897 are no longer optimized away.
2898 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2899 * incremented fasl file version number, because changes in the
2900 implementation of sequence functions like COERCE caused
2901 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2902 in old inline expansions) to become undefined. (Actually these
2903 changes were later undone, so we might very well be binary
2904 compatible with 0.7.7 after all, but leaving the version number
2905 incremented seemed like the simplest and most conservative
2908 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2909 * An alpha-quality port to the parisc architecture running Linux,
2910 based on the old CMUCL backend, has been made. This, even more so
2911 than the other backends, should be considered still a work in
2912 progress; known problems include that the Linux kernel in 64-bit
2913 mode does not propagate the correct sigcontext structure to
2914 userspace, and consequently SBCL on a parisc64 kernel will not
2916 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2917 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2918 suppressed.) Also now that the compiler is looking at declarations
2919 in the environment, it checks optimization declarations as well,
2920 and suppresses inlining when (> DEBUG SPEED).
2921 * More fixes have been made to treatment of floating point exception
2922 treatment and other Unix signals. In particular, floating point
2923 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2924 * The detection and handling of control stack exhaustion (infinite
2925 or very deeply nested recursion) has changed. Stack exhaustion
2926 detection is now done by write-protecting pages at the OS level
2927 and applies at all optimization settings; when found, a
2928 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2929 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2930 be caught using IGNORE-ERRORS.
2931 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2932 correctly when transforming recursive LABELS functions to LETs.
2933 (thanks to Alexey Dejneka)
2934 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2935 that are names of constants or global variables.
2936 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2937 alien routines with docstrings.
2938 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2939 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2941 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2942 (thanks to Eric Marsden)
2943 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2944 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2945 * Bug fix: The SPARC backend can now compile functions involving
2946 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2947 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2948 to a functions expecting a PATHNAME-DESIGNATOR.
2949 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2950 lambda lists. (thanks to Alexey Dejneka)
2951 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2952 functions so that EXPORTing the name of the class doesn't cause
2953 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2954 to Antonio Martinez for reporting this)
2955 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2956 constant-folded without failing an assertion. (thanks to Einar
2957 Floystad Dorum for reporting this)
2958 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2959 types are now dealt with more correctly by the compiler.
2960 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2961 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2962 behaviour analogous to RENAME-FILE. This puts its behaviour more
2963 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2965 * The fasl file version number has changed again. (because of the
2966 bug fix involving the names of PCL MAKE-INSTANCE functions)
2968 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2969 * bug fix: Floating point exceptions are treated much more
2970 consistently on the x86/Linux and PPC/Linux platforms.
2971 * Array initialization with :INITIAL-ELEMENT is now much faster for
2972 cases when the compiler cannot open code the array creation, but
2973 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2974 array accesses have also seen a speed increase.
2975 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2976 specified. (This was at the root of some bad interactions between
2977 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2979 * bug fix: Internal error arguments for undefined functions are now
2980 computed correctly on the PPC/Linux platform.
2981 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2982 Raymond Toy's patch for CMU CL)
2983 * Support for the Solaris 9 operating environment has been included
2984 (thanks to Daniel Merritt)
2985 * A very ugly but hopefully complete draft of the missing FFI chapter
2986 of the manual has been created by reformatting the corresponding
2987 CMU CL manual chapter into (currently very ugly and incoherent)
2988 DocBook and bringing it up to date for SBCL behavior. Thus, the
2989 manual is now essentially complete, at least by my extreme
2990 once-and-only-once standards, whereby it's acceptable to refer to
2991 the doc strings of SB-EXT functions as the primary documentation.
2992 * The fasl file version number has changed again, due to cleanup of
2993 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2994 is no longer a static symbol.)
2996 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2997 * SBCL now builds with OpenMCL (version 0.12) as the
2998 cross-compilation host; also, more progress has been made toward
2999 bootstrapping under CLISP.
3000 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3002 * bug 158 fixed: The compiler can now deal with integer loop
3003 increments different from 1; fixing this turned out also to fix
3005 * bug 169 fixed: no more bogus warnings about using lexical bindings
3006 despite the presence of perfectly good SPECIAL declarations (thanks
3007 to David Lichteblau)
3008 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3009 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3010 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3012 * bug 180 fixed: Method combination specifications no longer ignore
3013 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3014 * bug fix: Structure type predicate functions now check their argument
3015 count as they should.
3016 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3017 correctly. (thanks to Pierre Mai)
3018 * minor incompatible change: The --noprogrammer option is deprecated
3019 in favor of the new --disable-debugger option, which is very similar.
3020 (The major difference is that it takes effect at a slightly different
3021 time at startup, causing handling of errors in --sysinit and
3022 --userinit files will be affected differently.) The
3023 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3024 been added to allow this functionality to be controlled from ordinary
3025 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3026 maintainers, who might want to run non-interactive scripts to
3027 build SBCL cores which will later be used interactively.)
3028 * minor incompatible change: The LOAD function no longer, when given
3029 a wild pathname to load, loads all files matching that pathname.
3030 Instead, an error of type FILE-ERROR is signalled.
3032 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3033 * bug 147 fixed: The compiler preserves its block link/count
3034 invariants more correctly now so that it doesn't crash. (thanks
3036 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3038 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3039 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3040 no-value-for-this-character as NIL (as specified by ANSI).
3041 * HOST-NAMESTRING on physical pathnames now returns a string that is
3042 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3043 (thanks to Christophe Rhodes)
3044 * The Alpha port handles icache flushing more correctly. (thanks to
3046 * More progress has been made toward bootstrapping under CLISP. (thanks
3047 to Christophe Rhodes)
3048 * The fasl file format has changed again, because dynamic loading
3049 on OpenBSD (which has non-ELF object files) motivated some cleanups
3050 in the way that foreign symbols are transformed and passed around.
3051 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3052 is no longer treated as whitespace by the reader, but instead as
3053 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\x7fB") returns
3054 |A
\x7fB|, instead of A as it used to.
3056 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3057 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3058 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3059 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3060 this as of 0.7.1.45, but was left out of the previous news section
3061 (thanks to Dan Barlow)
3062 * SBCL now runs on the Solaris operating system on SPARC architectures
3063 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3064 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3065 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3066 * SPARC backend cleanups, allowing builds of cores optimized for V8
3067 and V9 SPARCS, and also emission of code targeted to a particular
3068 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3070 * SBCL is closer to bootstrapping under CLISP, thanks to various
3071 fixes by Christophe Rhodes.
3072 * The fasl file format has changed again, to allow the compiler's
3073 INFO database to support symbol macros.
3074 * The user manual (in doc/) is formatted into HTML more nicely.
3075 (thanks to coreythomas)
3076 * The system is smarter about SUBTYPEP relationships, especially
3077 those involving NOT types (including types such as ATOM which are
3078 represented internally using NOT types). Thus SUBTYPEP is less
3079 likely to return (VALUES NIL NIL) in general, and in particular
3080 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3082 * The fasl file format has changed again, because the internal
3083 representation of types now includes a new slot to support the new
3084 SUBTYPEP-of-NOT-types logic.
3085 * (not a change in the main branch of SBCL, but a related prototype
3086 which can hopefully be merged into the main branch of SBCL in the
3087 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3088 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3089 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3090 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3091 dispatch macro character combinations. (thanks to Alexey Dejneka)
3092 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3093 that superficially look like logical namestrings correctly.
3094 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3096 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3097 default supplied-p) for &optional and &key arguments. (thanks to
3100 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3101 * incompatible change: The compiler is now less aggressive about
3102 tail call optimization, doing it only when (> SPACE DEBUG) or
3103 (> SPEED DEBUG). (This is an incompatible change because there are
3104 programs which relied on the old CMU-CL-style behavior to optimize
3105 away their unbounded recursion which will now die of stack overflow.)
3106 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3107 for non-GENCGC systems has been increased to 20M (since that
3108 seems much closer to the likely performance optimum for modern
3109 systems than the old 4M value was)
3110 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3111 and *DEBUG-PRINT-LEVEL*
3112 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3113 of CMU CL's support for SPARC, and various endianness and other
3114 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3115 * new syntactic sugar for the Unix command line: --load foo.bar is now
3116 an alternate notation for --eval '(load "foo.bar")'.
3118 ** The system now detects stack overflow and handles it gracefully,
3119 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3120 optimization settings. (This is a good thing in general, and
3121 its introduction in this version should be particularly timely
3122 for anyone whose code fails because of suppression of tail
3124 ** The system now hunts for the C variable "environ" in a more
3125 devious way, to avoid segfaults when the C library version differs
3126 between compile time and run time. (thanks to Christophe Rhodes)
3127 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3128 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3129 ** The compiler no longer issues bogus style warnings for undefined
3130 classes in the same source file as the DEFCLASSes which defined
3131 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3133 ** fixes in CONDITION class precedence list for undefined function
3134 errors (thanks to Alexei Dejneka)
3135 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3136 correctly. (thanks to Dan Barlow)
3137 ** portability fixes aiming at bootstrapping under CLISP (thanks
3138 to Dave McDonald and Christophe Rhodes)
3139 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3140 ** fixes in type translation and and type inference (thanks to
3142 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3143 ** various fixes in the new ports (thanks to Dan Barlow)
3144 * several changes related to debugging:
3145 ** suppression of tail recursion, as noted above
3146 ** stack overflow detection, as noted above
3147 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3148 is now the default. (For some time encapsulation has been more
3149 reliable than the breakpoint-based :ENCAPSULATE NIL
3150 implementation, at least on X86 systems; and I just noticed that
3151 encapsulation also seems closer to the spirit of the ANSI
3154 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3156 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3157 up properly again. (There was a packaging bug in 0.7.0 which
3158 left their definitions in SB-SYS::LOAD-FOREIGN and
3159 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3160 vital for most things which interface to C-level interfaces,
3161 like extensions working with sockets or databases or
3162 Perl-compatible regexes or whatever, and the need to fix
3163 this bug is the main reason that 0.7.1 was released so
3165 ** DEFGENERIC is now choosier about the methods it redefines, so that
3166 reLOADing a previously-LOADed file containing DEFGENERICs does
3167 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3168 cycle now works as it should. (thanks to Alexey Dejneka)
3169 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3170 fixed by Christophe Rhodes. (He actually submitted this patch
3171 months ago, and I delayed until after 0.7.0.)
3172 ** Bug 111 (internal compiler confusion about runtime checks on
3173 FUNCTION types) was fixed by Alexey Dejneka.
3174 * Some internal cleanups (getting rid of variables which aren't
3175 needed now that the byte interpreter is gone) caused the fasl
3176 file format number to change again.
3178 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3179 * major incompatible change: The default fasl file extension, i.e. the
3180 default extension for files produced by COMPILE-FILE, has changed
3181 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3183 ** There are many changes in the implementation of the compiler.
3184 SBCL is now essentially a compiler-only implementation of ANSI
3185 Common Lisp. EVAL still "interprets" a few special cases, but
3186 almost all the interesting cases are handled by creating
3187 a LAMBDA expression, calling COMPILE on it, then calling
3188 FUNCALL on the result.
3189 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3190 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3191 Since the code is newer, there might still be some new bugs
3192 (though not as many as before Martin Atzmueller's fixes:-). But
3193 the new code is substantially simpler and clearer, and hopefully
3194 any remaining bugs will be simpler, less fundamental, and more
3195 fixable then the bugs in the old code.
3196 ** The revised compiler is still a little unsteady on its feet.
3198 *** The debugging information it produces (particularly the names
3199 of FUNCTION objects) is sometimes much less useful than what
3200 the old compiler produced.
3201 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3202 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3203 within a MACROLET) has been temporarily weakened.
3204 ** There are new compiler optimizations for various functions:
3205 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3206 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3207 *** the math functions TRUNCATE, FLOOR, and CEILING
3208 *** the function-of-all-trades COERCE
3209 Mostly these should be transparent, but there's one
3210 potentially-annoying problem (bug 117): when the compiler
3211 inline-expands a function and does type analysis on the result,
3212 it can create control paths which have type mismatches, and
3213 when it can't prove that those control paths aren't taken,
3214 it will issue WARNINGs about the type mismatches. This is
3215 a particular problem in practice for the new sequence functions.
3216 It's not clear how this should be fixed, and for now, a
3217 workaround is given in the entry for 117 in the BUGS file.
3218 ** (Because of the interaction between the two previous items --
3219 occasional inlining problems and new inline expansions -- some
3220 of the new sequence function optimizations won't really kick in
3221 completely until debugging information, and then inlining, are
3222 straightened out in some future version.)
3223 * minor incompatible changes:
3224 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3225 DIRECTORY no longer implicitly promotes NIL slots of its
3226 pathname argument to :WILD. In particular, when you ask for the
3227 contents of a directory (which you used to be able to do without
3228 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3229 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3230 ** changes in behavior that ANSI explicitly defines to be
3231 implementation dependent:
3232 *** The new compiler-only implementation still conforms with ANSI,
3233 but acts a little different than before. Besides the obvious
3234 changes in performance tradeoffs (that the cost per form passed
3235 to EVAL has gone up, and the cost per form executed by EVAL
3236 has gone down), the behavior of the system changes a little
3237 because there are no longer any interpreted function objects.
3238 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3239 e.g. doing COMPILE on the output of interactive DEFUN is
3241 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3243 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3244 has changed from (:CL) to NIL.
3245 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3246 e.g. #\Newline and #\Tab, don't have names specified in the
3247 ANSI Common Lisp standard, is now based on their ASCII symbolic
3248 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3249 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3250 are no longer used for output.
3251 ** changes in internal implementation constants:
3252 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3253 4 million. (If your application spends a lot of time GCing and
3254 you have a lot of RAM, you might want to experiment with
3255 increasing it even more.)
3256 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3257 However, almost all old code should still continue to work without
3258 immediate update, as SB-C-CALL is now a (deprecated) nickname
3260 ** Old operator names in the style DEF-FOO are now deprecated in
3261 favor of new corresponding names DEFINE-FOO, for consistency with
3262 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3263 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3264 internal symbols, but a few supported extensions like
3265 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3266 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3267 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3268 etc. as you get deeper into recursive calls to the debugger
3269 command loop, instead of the old "5]", "5]]", "5]]]"
3270 sequence. (I was motivated to do this when squabbles between
3271 ILISP and SBCL left me very deeply nested in the debugger. In the
3272 short term, this change will probably provoke more ILISP/SBCL
3273 squabbles, but hopefully it will be an improvement in the long run.)
3274 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3275 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3276 function, since declaiming return types involving aliens is
3277 (1) annoyingly messy to do by hand and (2) vital to efficient
3278 compilation of code which calls such functions.
3279 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3280 longer reexported by the SB-EXT package. They're solely useful
3281 for alien code, so it seems more logical that you should get
3282 them from the SB-ALIEN package, not in SB-EXT.
3283 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3284 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3285 features. Instead, the code that they used to control is always
3286 built into the system.
3287 * many other bug fixes
3288 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3289 advantage of the new EVAL-WHEN stuff and to clean them up in
3290 general, and they are now more ANSI-compliant in a number of
3291 ways. Martin Atzmueller is responsible for a lot of this.
3292 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3294 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3295 *** correct ERROR type for various file operations
3296 *** some fixes for Lisp streams
3297 *** DEFMETHOD syntax checking
3298 *** changing old weird representation of debug information as
3299 strings (which, among their other deficiencies, don't transform
3300 correctly when you rename packages, and don't change their
3301 print representation when you change things like *PACKAGE*
3302 and *PRINT-LENGTH*) to symbols and lists of symbols
3303 He also made several improvements and fixed several bugs in DESCRIBE.
3304 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3306 *** misbehavior of WRITE-STRING/WRITE-LINE
3307 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3308 and several other LOOP problems as well
3309 *** DIRECTORY when similar filenames are present
3310 *** DEFGENERIC with :METHOD options
3311 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3312 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3313 *** argument ordering in FIND with :TEST option
3314 *** mishandled package designator argument in APROPOS-LIST
3315 *** various problems in the backquote readmacro
3316 *** a bug in APROPOS
3317 *** probably some others that I'm not describing very well here,
3318 since the CVS log documents them by reference to sbcl-devel
3319 messages, and the SourceForge archives aren't working well.:-(
3320 ** Dan Barlow improved the Alpha port (and is making progress on the
3321 PPC port, for those of you who think different).
3322 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3323 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3324 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3325 continues to work on the SPARC port (for those of you in a position
3326 to look down upon our little PC-compatible boxes from a great height).
3327 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3328 and uses that copy, rather than the current dynamic value, when
3329 it's trying to decide whether to truncate output. Thus e.g.
3330 (let ((*print-lines* 50))
3331 (pprint-logical-block (stream nil)
3333 (let ((*print-lines* 8))
3334 (print (aref possiblybigthings i) stream)))))
3335 should now truncate the logical block only at 50 lines, instead of
3336 often truncating it at 8 lines, as it did before.
3337 * The doc/cmucl/ directory, containing old CMU CL documentation
3338 from the time of the fork, is no longer part of the base system.
3339 SourceForge has shut down its anonymous FTP service, and with it
3340 my original plan for distributing the old CMU CL documentation
3341 there. For now, if you need these files you can download an old
3342 SBCL source release and extract them from it.
3343 * The fasl file version number changed again, for dozens of reasons,
3344 some of which are apparent above.
3346 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3347 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3348 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3349 patch, so that DISASSEMBLE output is much nicer.
3350 * The code in the SB-PROFILE package now seems reasonably stable.
3351 I still haven't decided what the final interface should look like
3352 (I'd like PROFILE to interact cleanly with TRACE, since both
3353 facilities use function encapsulation) but if you have a need
3354 for profiling now, you can probably use it successfully with
3355 the current CMU-CL-style interface.
3356 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3357 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3358 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3359 link now returns the dangling link itself, and for similar
3360 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3361 link itself. (In these cases the old code signalled an error and
3362 looped endlessly, respectively.) Thus, DIRECTORY now works even
3363 in the presence of dangling and cyclic symbolic links.
3364 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3365 is now a supported extension again, since the consensus on
3366 sbcl-devel was that it can be useful for ordinary development
3367 work, not just for debugging SBCL itself.
3368 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3369 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3370 that currently-defined functions might be redefined later with
3371 different return types.
3372 * Hash tables can be printed readably, as inspired by CMU CL code
3373 of Eric Marsden and SBCL code of Martin Atzmueller.
3374 * better error handling in CLOS method combination, thanks to
3375 Martin Atzmueller porting Pierre Mai's CMU CL patches
3376 * more overflow fixes for >16Mbyte I/O buffers
3377 * A bug in READ has been fixed, so that now a single Ctrl-D
3378 character suffices to cause end-of-file on character streams.
3379 In particular, now you only need one Ctrl-D at the command
3380 line (not two) to exit SBCL.
3381 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3383 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3384 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3385 does the right thing.
3386 * The implementation of some type tests, especially for CONDITION
3387 types, is now tidier and maybe faster, due to CMU CL code
3388 originally by Douglas Crosher, ported by Martin Atzmueller.
3389 * Some math functions have been fixed, and there are new
3390 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3391 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3392 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3393 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3394 likely to be built into sbcl-0.7.0.)
3395 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3396 CL, ported to SBCL by Martin Atzmueller)
3397 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3398 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3399 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3400 * There's a new slam.sh hack to shorten the edit/compile/debug
3401 cycle for low-level changes to SBCL itself, and a new
3402 :SB-AFTER-XC-CORE target feature to control the generation of
3403 the after-xc.core file needed by slam.sh.
3404 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3405 COMPILE-FILE is no longer supported, so that now every function
3406 gets an entry point, so that block compilation looks a little
3407 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3408 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3409 returns the number of bytes consed since the system started,
3410 rather than the number consed since the first time the function
3411 was called. (The new definition parallels ANSI functions like
3412 CL:GET-INTERNAL-RUN-TIME.)
3413 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3414 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3415 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3416 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3417 * Fasl file version numbers are now independent of the target CPU,
3418 since historically most system changes which required version
3419 number changes have affected all CPUs equally. Similarly,
3420 the byte fasl file version is now equal to the ordinary
3423 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3424 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3425 is no longer recognized. I apologize for this, because it was
3426 listed in SB-EXT as a supported extension, but I found that
3427 its existing behavior was poorly specified, as well as incorrectly
3428 specified, and it looked like too much of a mess to straighten it
3429 out. I have enough on my hands trying to get ANSI stuff to work..
3430 * many patches ported from CMU CL by Martin Atzmueller, with
3431 half a dozen bug fixes in pretty-printing and the debugger, and
3432 half a dozen others elsewhere
3433 * fixed bug 13: Floating point infinities are now supported again.
3434 They might still be a little bit flaky, but thanks to bug reports
3435 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3436 as flaky as they were.
3437 * The --noprogrammer command line option is now supported. (Its
3438 behavior is slightly different in detail from what the old man
3439 page claimed it would do, but it's still appropriate under the
3440 same circumstances that the man page talks about.)
3441 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3442 are now supported, and enabled by default. Thus, the compiler can
3443 handle many floating point and complex operations much less
3444 inefficiently. (Thus e.g. you can implement a complex FFT
3446 * The compiler now detects type mismatches between DECLAIM FTYPE
3447 and DEFUN better, and implements CHECK-TYPE more correctly, and
3448 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3449 thanks to patches from Martin Atzmueller.
3450 * various fixes to make the cross-compiler more portable to
3451 ANSI-conforming-but-different cross-compilation hosts (notably
3452 Lispworks for Windows, following bug reports from Arthur Lemmens)
3453 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3454 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3455 fixed thanks to Pierre Mai's CMU CL patches.
3456 * fixes to keep the system from overflowing internal counters when
3457 it tries to use i/o buffers larger than 16M bytes
3458 * fixed bug 45a: Various internal functions required to support
3459 complex special functions have been merged from CMU CL sources.
3460 (When I was first setting up SBCL, I misunderstood a compile-time
3461 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3462 * improved support for type intersection and union, fixing bug 12
3463 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3464 more obscure bugs as well
3465 * some steps toward byte-compiling non-performance-critical
3466 parts of the system, courtesy of patches from Martin Atzmueller
3467 * Christophe Rhodes has made some debian packages of sbcl at
3468 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3469 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3470 stable, but are nonetheless usable. When he's ready, I'd be happy
3471 to add them to the SourceForge "File Releases" section. (And if
3472 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3473 * new fasl file format version number (because of changes in
3474 internal representation of (OR ..) types to accommodate the new
3475 support for (AND ..) types, among other things)
3477 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3478 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3480 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3482 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3483 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3484 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3485 * DESCRIBE now works on structure objects again.
3486 * Most function call argument type mismatches are now handled as
3487 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3488 know whether the function will be redefined before the call is
3489 executed. (The compiler could flag local calls with full WARNINGs,
3490 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3491 it doesn't keep track of enough information to know whether calls
3492 are local in this sense.)
3493 * Compiler output is now more verbose, with messages truncated
3494 later than before. (There should be some supported way for users
3495 to override the default verbosity, but I haven't decided how to
3496 provide it yet, so this behavior is still controlled by the internal
3497 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3498 src/compiler/ir1util.lisp.)
3499 * Fasl file format version numbers have increased again, because
3500 support for the Gray streams extension changes the layout of the
3501 system's STREAM objects.
3502 * The Gray subclassable streams extension now works, thanks to a
3503 patch from Martin Atzmueller.
3504 * The full LOAD-FOREIGN extension (not just the primitive
3505 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3506 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3507 but like most other programs, it defaults to copying the Unix
3508 environment from the original process instead of starting the
3509 new process in an empty environment.
3510 * Extensions which manipulate the Unix environment now support
3511 an :ENVIRONMENT keyword option which doesn't smash case or
3512 do other bad things. The CMU-CL-style :ENV option is retained
3513 for porting convenience.
3514 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3515 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3517 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3519 * A patch from Martin Atzmueller seems to have solved the SIGINT
3520 problem, and as far as we know, signal-handling now works cleanly.
3521 (If you find any new bugs, please report them!)
3522 * The system no longer defaults Lisp source file names to types
3523 ".l", ".cl", or ".lsp", but only to ".lisp".
3524 * The compiler no longer uses special default file extensions for
3525 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3526 seems to expect a single default extension for all compiled code,
3527 and there's no compelling reason to try to stretch the standard
3528 to allow two different extensions.) Instead, byte-compiled files
3529 default to the same extension as native-compiled files.
3530 * Fasl file format version numbers have increased again, because
3531 a rearrangement of internal implementation packages made some
3532 dumped symbols in old fasl files unreadable in new cores.
3533 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3534 many fewer weird special cases.
3535 * Bug #17 (differing COMPILE-FILE behavior between logical and
3536 physical pathnames) has been fixed, and some related misbehavior too,
3537 thanks to a patch from Martin Atzmueller.
3538 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3539 by Tim Moore, ported to SBCL by Martin Atzmueller.
3540 * Martin Atzmueller fixed several filesystem-related problems,
3541 including bug #36, in part by porting CMU CL patches, which were
3542 written in part by Paul Werkowski.
3543 * More compiler warnings in src/runtime/ are gone, thanks to
3544 more patches from Martin Atzmueller.
3545 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3548 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3550 * DESCRIBE now works on CONDITION objects.
3551 * The debugger now handles errors which arise when trying to print
3552 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3554 * The build system now uses an additional file, customize-target-features.lisp,
3555 to allow local modifications to the target *FEATURES* list. (The point of
3556 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3557 debugging features enabled, without having to worry about propagating it
3558 into everyone's system when I do a "cvs update".) When no
3559 customize-target-features.lisp file exists, the target *FEATURES* list
3560 should be constructed the same way as before.
3561 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3562 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3563 warn about behavior which is undefined under the ANSI spec. Note: This
3564 is specified by ANSI, but it's not very popular with programmers.
3565 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3566 macro in the SBCL sources for an example of a workaround which you
3567 might use to make portable ANSI-standard code which does what you want.
3568 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3569 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3570 when it's used as a non-toplevel form. (This is required in order
3571 to implement the DEFCONSTANT-EQX macro.)
3572 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3573 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3574 funny things, due to bugs in the implementation of EVAL-WHEN
3575 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3576 non-toplevel DEFCONSTANTs are uncommon.)
3577 * The core file version number and fasl file version number have been
3578 incremented, because the old noncompliant DEFCONSTANT behavior involved
3579 calling functions which no longer exist, and because I also took the
3580 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3581 * fixed bug 1 (error handling before read-eval-print loop starts), and
3582 redid debugger restarts and related debugger commands somewhat while
3584 ** The QUIT debugger command is gone, since it did something
3585 rather different than the SB-EXT:QUIT command, and since it never
3586 worked properly outside the main toplevel read/eval/print loop.
3587 Invoking the new TOPLEVEL restart provides the same functionality.
3588 ** The GO debugger command is also gone, since you can just invoke
3589 the CONTINUE restart directly instead.
3590 ** The TOP debugger command is also gone, since it's redundant with the
3591 FRAME 0 command, and since it interfered with abbreviations for the
3593 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3595 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3596 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3597 some porting work by Martin Atzmueller)
3598 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3599 with a boatload of patches which he ported to SBCL. Now that those
3601 ** The system tries to make sure that its low-priority messages
3602 are prefixed by semicolons, to help people who like to use
3603 syntax highlighting in their ILISP buffer. (This patch
3604 was originally due to Raymond Toy.)
3605 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3606 patches originally written by Raymond Toy.
3607 ** The compiler understands coercion between single-value and
3608 multiple-VALUES type expressions better, getting rid of some very
3609 weird behavior, thanks to patches originally by Robert MacLachlan
3610 and Douglas Crosher.
3611 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3612 lambda lists, thanks to a patch originally by Pierre Mai.
3613 ** The system no longer bogusly warns about "abbreviated type
3615 ** The compiler gets less confused by inlining and RETURN-FROM,
3616 thanks to some patches originally by Tim Moore.
3617 ** The system no longer hangs when dumping circular lists to fasl
3618 files, thanks to a patch originally from Douglas Crosher.
3619 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3620 undefined function error.
3621 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3622 in structure slot initforms) for now, documented workaround instead:-|
3623 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3624 * fixed bug 5: added stubs for various Gray stream functions called
3625 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3626 installed, at least appropriate type errors are generated
3627 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3628 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3629 consistently in DEFMETHOD forms.
3630 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3631 it doesn't seem to affect SBCL after all
3632 * The C runtime system now builds with better optimization and many
3633 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3635 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3637 * The system is now under CVS at SourceForge (instead of the
3638 CVS repository on my home machine).
3639 * The new signal handling code has been tweaked to treat register
3640 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3641 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3642 downstream, e.g. in debug-int.lisp, has implicit dependencies
3643 on the unsignedness of integer representation of machine words,
3644 and that caused the system to bomb out with infinite regress
3645 when trying to recover from type errors involving signed values,
3646 e.g. (BUTLAST '(1 2 3) -1).)
3647 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3648 (This was one of the bugs Peter Van Eynde reported back in July.)
3649 * The system now uses code inspired by Colin Walters' O(N)
3650 implementation of MAP (from the cmucl-imp@cons.org mailing
3651 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3652 inline the MAP operation, and there is more than one
3653 sequence argument to the MAP call (so that it can't just
3654 do ETYPECASE once and for all based on the type of the
3655 single sequence argument). (The old non-inline implementation
3656 of the general M-argument sequence-of-length-N case required
3657 O(M*N*N) time when any of the sequence arguments were LISTs.)
3658 * The QUIT :UNIX-CODE keyword argument has been renamed to
3659 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3660 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3662 * Raymond Wiker's patches to port dynamic loading from Linux to
3663 FreeBSD have been added.
3664 * The BUGS file is now more nearly up to date, thanks in large part
3665 to Martin Atzmueller's review of it.
3666 * The debugger now flushes standard output streams before it begins
3667 its output ("debugger invoked" and so forth).
3668 * The core version number and fasl file version number have both
3669 been incremented, because of incompatible changes in the layout
3671 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3672 used to not be called for a saved Lisp image.)
3673 * Martin Atzmueller's version of a patch to fix a compiler crash,
3674 as posted on sbcl-devel 13 September 2000, has been installed.
3675 * Instead of installing Martin Atzmueller's patch for the
3676 compiler transform for SUBSEQ, I deleted the compiler transform,
3677 and transforms for some similar consing operations.
3678 * A bug in signal handling which kept TRACE from working on OpenBSD
3680 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3681 away by constant folding
3682 * The system now defines its address space constants in one place
3683 (in the Lisp sources), and propagates them automatically elsewhere
3684 (through GENESIS and the sbcl.h file). Therefore, patching the
3685 address map is less unnecessarily tedious and error-prone. The
3686 Lisp names of address space constants have also been systematized.
3687 * CVS tags like dollar-Header-dollar have been removed from
3688 the sources, because they have never saved me trouble and
3689 they've been source of trouble working with patches and other
3690 diff-related operations.
3691 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3692 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3694 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3696 * The system has been ported to OpenBSD.
3697 * The system now compiles with a simple "sh make.sh" on the systems
3698 that it's supported on. I.e., now you no longer need to tweak
3699 text in the target-features.lisp-expr and symlinks in src/runtime/
3700 by hand, the make.sh takes care of it for you.
3701 * The system is no longer so grossly inefficient when compiling code
3702 involving vectors implemented as general (not simple) vectors (VECTOR T),
3703 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3704 which dares to use the various sequence functions on non-simple
3705 vectors, takes less of a performance hit.
3706 * There is now a primitive type predicate VECTOR-T-P
3707 to test for the (VECTOR T) type, so that e.g.
3708 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3709 can now be compiled with some semblance of efficiency. (The old code
3710 turned the type declaration into a full call to %TYPEP at runtime!)
3711 * AREF on (VECTOR T) is still not fast, since it's still compiled
3712 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3713 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3714 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3715 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3716 without making full calls to SUBTYPEP at runtime.
3717 (Some analogous efficiency issues for non-simple vectors specialized to
3718 element types other than T, or for non-simple multidimensional arrays,
3719 have not been addressed. They could almost certainly be handled the
3720 same way if anyone is motivated to do so.)
3721 * The changes in array handling break binary compatibility, so
3722 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3723 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3724 instead of (VALUES T T).
3725 * By following the instructions that Dan Barlow posted to sbcl-devel
3726 on 2 July 2000, I was able to enable primitive dynamic object
3727 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3728 functionality is not implemented (since it calls ld to resolve
3729 library references automatically, requiring RUN-PROGRAM for its
3730 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3731 try to resolve library references) is now supported.
3732 * The system now flushes the standard output streams when it terminates,
3733 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3734 them at several other probably-convenient times, e.g. in each pass of
3735 the toplevel read-eval-print loop, and after evaluating a form given
3736 as an "--eval" command-line option. (These changes were motivated by a
3737 discussion of stream flushing issues on cmucl-imp in August 2000.)
3738 * The source transform for TYPEP of array types no longer assumes
3739 that an array whose element type is a not-yet-defined type
3740 is implemented as an array of T, but instead punts, so that the
3741 type will be interpreted at runtime.
3742 * There is now some support for cross-compiling in make.sh: each of
3743 the phases of make.sh has its own script. (This should be transparent
3744 to people doing ordinary, non-cross-compile builds.)
3745 * Since my laptop doesn't have hundreds of megabytes of memory like
3746 my desktop machine, I became more motivated to do some items on
3747 my to-do list in order to reduce the size of the system a little:
3748 ** Arrange for various needed-only-at-cold-init things to be
3749 uninterned after cold init. To support this, those things have
3750 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3751 symbols with such names are now uninterned after cold init).
3752 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3753 fasl files for cold load.
3754 ** Remove the old compiler structure pooling code (which used to
3755 be conditional on the target feature :SB-ALLOC) completely.
3756 ** Redo the representation of some data in cold init to be more compact.
3757 (I also looked into supporting byte compiled code at bootstrap time,
3758 which would probably reduce the size of the system a lot, but that
3759 looked too complicated, so I punted for now.)
3760 * The maximum signal nesting depth in the src/runtime/ support code has
3761 been reduced from 4096 to 256. (I don't know any reason for the very
3762 large old value. If the new smaller value turns out to break something,
3763 I'll probably just bump it back up.)
3764 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3766 * Many, many bugs reported by Peter Van Eynde have been added to
3767 the BUGS list; some have even been fixed.
3768 * While enabling dynamic object file loading, I tried to make the
3769 code easier to understand, renaming various functions and variables
3770 with less ambiguous names, and changing some function calling
3771 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3772 * While trying to figure out how to do the OpenBSD port, I tried to
3773 clean up some of the code in src/runtime/. In particular, I dropped
3774 support for non-POSIX signal handling, added various comments,
3775 tweaked the code to reduce the number of compilation warnings, and
3776 renamed some files to increase consistency.
3777 * To support the new automatic configuration functionality in make.sh,
3778 the source file target-features.lisp-expr has been replaced with the
3779 source file base-target-features.lisp-expr and the machine-generated
3780 file local-target-features.lisp-expr.
3781 * fixed a stupid quoting error in make.sh so that using CMU CL
3782 "lisp -batch" as cross-compilation host works again
3784 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3786 * DESCRIBE no longer tries to call itself recursively to describe
3787 bound/fbound values, so that it no longer fails on symbols which are
3788 bound to themselves (like keywords, T, and NIL).
3789 * DESCRIBE now works on generic functions.
3790 * The printer now prints less-screwed-up representations of closures
3791 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3792 * A private symbol is used instead of the :EMPTY keyword previously
3793 used to mark empty slots in hash tables. Thus
3794 (DEFVAR *HT* (MAKE-HASH-TABLE))
3795 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3796 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3797 now does what ANSI says that it should. (You can still get
3798 similar noncompliant behavior if bang on the hash table
3799 implementation with all the symbols you get back from
3800 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3801 This breaks binary compatibility, since tests for equality to
3802 :EMPTY are wired into things like the macroexpansion of
3803 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3805 * There's now a minimal placeholder implementation for CL:STEP,
3806 as required by ANSI.
3807 * An obscure bug in the interaction of the normal compiler, the byte
3808 compiler, inlining, and structure predicates has been patched
3809 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3810 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3812 * Missing ordinary arguments in a macro call are now detected even
3813 when the macro lambda list contains &KEY or &REST.
3814 * The debugger no longer complains about encountering the top of the
3815 stack when you type "FRAME 0" to explicitly instruct it to go to
3816 the top of the stack. And it now prints the frame you request even
3817 if it's the current frame (instead of saying "You are here.").
3818 * As specified by ANSI, the system now always prints keywords
3819 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3821 * The default initial SIZE of HASH-TABLEs is now smaller.
3822 * Type information from CLOS class dispatch is now propagated
3823 into DEFMETHOD bodies, so that e.g.
3824 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3826 is now basically equivalent to
3827 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3828 (DECLARE (TYPE SINGLE-FLOAT X))
3830 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3831 operation, without having to do run-time type dispatch.
3832 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3833 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3834 * Since I don't seem to be making big file reorganizations very often
3835 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3836 is overflowing my ability to conveniently back them up), I've finally
3837 checked the system into CVS. (The CVS repository is on my home system,
3838 not at SourceForge -- putting it on SourceForge might come later.)
3839 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3840 high-level GC-NOTIFY-FOO functions send their output. (There's
3841 still very little control of where low-level verbose GC functions
3842 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3843 less than it used to -- the GC-NOTIFY-FOO functions are now under
3844 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3845 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3846 in only one place in the source code, and propagates it automatically
3847 everywhere that it's needed. Thus e.g. when I bump the version from
3848 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3849 * The C source files now include boilerplate legalese and documentation
3850 at the head of each file (just as the Lisp source files already did).
3851 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3852 to his page will be replaced with a link to his new CLiki service.
3854 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3856 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3857 * The build process now looks for GNU make under the default name "gmake",
3858 instead of "make" as it used to. If GNU make is not available as "gmake"
3859 on your system, you can change this default behavior by setting the
3860 GNUMAKE environment variable.
3861 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3862 can build without error under CMU CL.
3864 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3866 * There is now a partial SBCL user manual (with some new text and some
3867 text cribbed from the CMU CL manual).
3868 * The beginnings of a profiler have been added (starting with the
3869 CMU CL profiler and simplifying and cleaning up). Eventually the
3870 main interface should be through the TRACE macro, but for now,
3871 it's still accessed through vaguely CMU-CL-style functions and macros
3872 exported from the package SB-PROFILE.
3873 * Some problems left over from porting CMU CL to the new
3874 cross-compilation bootstrap process have been cleaned up:
3875 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3876 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3877 part when getting rid of the compiler *BACKEND* stuff.)
3878 ** The value of *NULL-TYPE* was screwed up, because it was
3879 being initialized before the type system knew the final
3880 definition of the 'NULL type. This screwed up several key
3881 optimizations in the compiler, causing inefficiency in all sorts
3882 of places. (I found it because I wanted to understand why
3883 GET-INTERNAL-RUN-TIME was consing.)
3884 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3885 PROCLAIM FTYPE information. Unfortunately this broke binary
3886 compatibility again, since now the forms output by DEFGENERIC
3887 to refer to functions which didn't exist in 0.6.3.
3888 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3889 can use the new (as of 0.6.3) transform for SOME into MAP into
3891 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3892 values to (INTEGER 0 1000000), so that the time code will no longer
3893 occasionally get blown up by Linux returning 1000000 microseconds
3894 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3895 its output conform to the ANSI spec. (Alas, this makes its output
3896 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3897 * A full call to MAP NIL with a single sequence argument no longer conses.
3898 * fixes to problems pointed out by Martin Atzmueller:
3899 * The manual page no longer talks about multiprocessing as though
3900 it were currently supported.
3901 * The ILISP support patches have been removed from the distribution,
3902 because as of version 5.10.1, ILISP now supports SBCL without us
3903 having to maintain patches.
3904 * added a modified version of Raymond Toy's recent CMU CL patch for
3905 EQUALP comparison of HASH-TABLE
3907 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3909 * The system still can't cross-compile itself with
3910 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3911 entails), but at least it can compile more of itself that way
3912 than it used to be able to, and various buglets which were uncovered
3913 by trying to cross-compile itself that way have now been fixed.
3914 * This release breaks binary compatibility again. This time
3915 at least I've incremented the FASL file format version to 2, so that the
3916 problem can be detected reliably instead of just causing weird errors.
3917 * various new style warnings:
3918 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3919 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3920 ** using the lexical binding of a variable named in the *FOO* style
3921 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3922 as specified by ANSI.
3923 * *RANDOM-STATE* is no longer automatically initialized from
3924 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3925 default behavior of the system is to repeat its behavior every time
3926 it's run. If you'd like to change this behavior, you can always
3927 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3928 old convention there was no comparably easy way to get the system to
3929 repeat its behavior every time it was run.
3930 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3931 FTYPE declarations has been removed, in favor of their ANSI
3932 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3933 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3934 the types of their sequence arguments can be determined at compile time.
3935 This is done through a new open code expansion for MAP which eliminates
3936 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3937 argument types can be determined at compile time.
3938 * The optimizer now transforms COERCE into an identity operation when it
3939 can prove that the coerced object is already of the correct type. (This
3940 can be a win for machine generated code, including the output of other
3941 optimization transforms, such as the MAP transform above.)
3942 * Credit information has been moved from source file headers into CREDITS.
3943 * Source file headers have been made more standard.
3944 * The CASE macro now compiles without complaining even when it has
3947 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3949 * (Note that the way that the PCL macroexpansions were rewritten
3950 to accommodate the change in DEFGENERIC below breaks binary
3951 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3952 not run under sbcl-0.6.2. Once we get out of alpha releases,
3953 i.e. hit release 1.0.0, we'll probably try to maintain binary
3954 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3955 and sbcl-1.4.4. Until then, however, it might be fairly common
3956 for maintenance releases to break binary compatibility.)
3957 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3959 * The reporting of unhandled signals has been changed to print some
3960 explanatory text as well as the report form. (Previously only
3961 the report form was printed.)
3962 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3963 it defines, so that the compiler no longer issues undefined function
3964 warnings for compiled-but-not-yet-loaded generic functions.
3965 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3966 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3967 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3968 section of the ANSI spec are supported.
3969 * The "" nickname for the "KEYWORD" package has been removed.
3970 The reader still handles symbol tokens which begin with a package marker
3971 as keywords, but it doesn't expose its mechanism for doing so in the
3972 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3973 * The system now issues STYLE-WARNINGs for contradictory TYPE
3974 proclamations. (Warnings for contradictory FTYPE proclamations would
3975 be nice too, but those can't be done usefully unless the type system
3976 is made smarter about FUNCTION types.)
3977 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3978 systematized, so that "*target-*.lisp is supposed to exist only on the
3979 target and imply that there's a related file which exists on the
3980 host, and *host-*.lisp is supposed to exist only on the host and imply
3981 that there's a related file which exists on the target. This involves a
3982 lot of renaming. Hopefully the acute confusion caused by the renaming
3983 will be justified by the reduction in chronic confusion..
3984 ** runtime-type.lisp -> early-target-type.lisp
3985 ** target-type.lisp -> late-target-type.lisp
3986 ** early-host-format.lisp -> early-format.lisp
3987 ** late-host-format.lisp -> late-format.lisp
3988 ** host-error.lisp -> misc-error.lisp
3989 ** early-error.lisp -> early-target-error.lisp
3990 ** late-error.lisp -> late-target-error.lisp
3991 ** host-defboot.lisp -> early-defboot.lisp
3992 ** code/misc.lisp -> code/target-misc.lisp
3993 ** code/host-misc.lisp -> code/misc.lisp
3994 ** code/numbers.lisp -> code/target-numbers.lisp
3995 ** code/early-numbers.lisp -> numbers.lisp
3996 ** early-host-type.lisp -> early-type.lisp
3997 ** late-host-type.lisp -> late-type.lisp
3998 ** host-typep.lisp -> typep.lisp
3999 ** load.lisp -> target-load.lisp
4000 ** host-load.lisp -> load.lisp
4001 ** host-disassem.lisp -> disassem.lisp
4002 ** host-insts.lisp -> insts.lisp
4003 ** byte-comp.lisp -> target-byte-comp.lisp
4004 ** host-byte-comp.lisp -> byte-comp.lisp
4005 ** host-signal.lisp -> signal.lisp
4006 ** host-defstruct.lisp -> defstruct.lisp
4007 ** late-target-type.lisp -> deftypes-for-target.lisp
4008 Furthermore, several other previously target-only files foo.lisp (e.g.
4009 hash-table.lisp and random.lisp) have been split into a target-and-host
4010 foo.lisp file and a target-only target-foo.lisp file, with their key type
4011 definitions in the target-and-host part, so that the cross-compiler will
4012 know more about target types.
4013 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4014 gone away. In their place are various *BACKEND-FOO* variables
4015 corresponding to the slots of the old structure.
4016 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4017 into the target SBCL has been fixed.
4018 * The chill.lisp system for loading cold code into a running SBCL
4020 * Support for the CMU CL "scavenger hook" extension has been removed.
4021 (It was undocumented and unused in the CMU CL sources that SBCL was
4022 derived from, and stale in sbcl-0.6.1.)
4023 * Various errors in the cross-compiler type system were detected
4024 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4025 (enabling various consistency checks). Many of them were fixed,
4026 but some hard problems remain, so the compiler is back to
4027 running without *TYPE-SYSTEM-INITIALIZED* for now.
4028 * As part of the cross-compiler type system cleanup, I implemented
4029 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4030 * I have started adding UNCROSS calls throughout the type system
4031 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4032 on cross-compiler input files will be able to go away, and various
4034 * CONSTANTP now returns true for quoted forms (as explicitly required
4037 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4039 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4040 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4041 (MAKE-LIST -1). In the longer term, it ought to become true
4042 that declarations are assertions even at SAFETY 1. For now, it's not
4043 quite true even at SAFETY 3, but it's at least more nearly true..
4044 (Note that this change seems to increases the size of the system by
4045 O(5%) and to decrease the speed of the compiler by 20% or more.)
4046 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4047 for the problem of printing dozens of lines of distracting information
4048 about low-level system machinery as part of the top stack frame
4049 on entry to the debugger when an undefined function was called.
4050 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4051 is not reset to COMMON-LISP-USER.
4052 * Compilation of stuff related to dyncount.lisp has been made conditional
4053 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4054 smaller. The various dyncount-related symbols have been moved into
4055 a new "SB-DYNCOUNT" package.
4056 * tty-inspect.lisp has been renamed to inspect.lisp.
4057 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4058 feature has gone away. (When we eventually port to other flavors of
4059 libc and/or Unix, we'll try to make the differences between flavors
4060 invisible at the user level.)
4061 * Various other *FEATURES* tags, and/or their associated conditionals,
4062 have been removed if obsolescent, or given better documentation, or
4063 sometimes given more-mnemonic names.
4065 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4067 * tidied up "make.sh" script
4068 * tidied up system directory structure
4069 * better "clean.sh" behavior
4070 * added doc/FOR-CMUCL-DEVELOPERS
4071 * many many small tweaks to output format, e.g. removing possibly-confusing
4072 trailing #\. character in DESCRIBE-INSTANCE
4073 * (EQUALP #\A 'A) no longer signals an error.
4074 * new hashing code, including EQUALP hashing
4075 * tidied up Lisp initialization and toplevel
4076 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4077 * command line argument processing
4078 * added POSIX-GETENV function to deal with Unix-ish environment variables
4079 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4080 terminating SBCL on EOF
4081 * non-verbose GC by default
4082 * There is no more "sbcl" shell script; the sbcl file is now the C
4083 runtime executable (just like CMU CL).
4084 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4086 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4087 symbol and package information as Lisp native symbol and package objects
4088 instead of strings naming symbols and strings naming packages. This way,
4089 whenever packages are renamed (as in warm init), debug information is
4090 transformed along with everything else.
4091 * tweaked the optimization policy declarations which control the building
4092 of SBCL itself. Now, among other things, the system no longer saves
4093 source location debugging information. (This helps two problems at once
4094 by reducing SBCL size and by keeping SBCL from trying to look for its
4095 sources -- which may not exist -- when reporting errors.)
4096 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4097 debugging and testing purposes
4098 * cleaned up printing, making the printer call PRINT-OBJECT for
4099 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4100 methods, giving nearly-ANSI behavior
4101 * converted almost all special variables to use *FOO* naming convention
4102 * deleted PARSE-TIME functionality, since it can be done portably
4103 * moved some files out of cold init into warm init
4104 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4106 * regularized formatting of source files
4107 * added an install.sh script
4108 * fixed ridiculous memory usage of cross-compiler by making
4109 compiler/alloc.lisp not try to do pooling unless it can hook
4110 itself into the GC of the cross-compilation host. Now the system
4111 builds nicely on my old laptop.
4112 * added :SB-ALLOC in target-features.lisp-expr
4113 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4114 was not implemented)
4115 * re-did condition handling and note reporting in the compiler. Notes
4116 are no longer handled by signalling conditions. Style warnings
4117 and warnings are handled more correctly and reported in such a way
4118 that it's easy to find one or the other in your output (so that you
4119 can e.g. figure out which of many problems caused COMPILE-FILE to
4121 * changed the severity of several compiler warnings from full WARNING
4122 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4123 compiler note reporting so that it doesn't use the condition system
4124 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4125 COMPILE-FILE command)
4126 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4127 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4128 no longer supported, since their implementation was deeply intertwingled
4129 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4130 * removed bogus "support" for compiler macros named (SETF FOO), and
4131 removed the compiler macro for SETF INFO (but only after making a fool
4132 of myself on the cmucl-imp mailing list by posting a bogus patch for
4133 DEFINE-COMPILER-MACRO..)
4134 * Compiled files containing forms which have side effects on the Lisp
4135 reader (such as DEFPACKAGE forms) are now handled more correctly.
4136 (Compiler queuing of top level lambdas has been suppressed by setting
4137 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4138 * deleted various currently-unused source files, e.g. gengc.lisp. They
4139 may be added back at some point e.g. when porting to other architectures,
4140 but until they are it's distracting to distribute them and to try to
4142 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4143 there were so many of them they're just distractions, and UNCROSS is
4144 known to be able to handle the current sources
4145 * moved PROFILE functionality into TRACE, so that it will be clear
4146 how the wrapping and unwrapping of functions when you profile them
4147 interacts with the wrapping and unwrapping of functions when you
4148 trace them. (Actually, the functionality isn't there yet, but at least
4149 the interface specification is there. Hopefully, the functionality will
4150 arrive with some future maintenance release.)
4151 * removed host-oops.lisp
4152 * changed signature of QUIT function to allow UNIX-CODE argument
4153 * fixed READ-SEQUENCE bug
4154 * tweaked verbose GC output so that it looks more like the progress
4155 output that ANSI specifies for functions like LOAD
4156 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4157 * added <http://sbcl.sourceforge.com> to the banner information printed by