1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
3 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
4 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
5 produce more efficient code on the x86 if the compiler can determine
6 that (+ INDEX <constant>) does not require a bounds check and FOO
7 has an element type at least 8 bits wide.
8 * bug fix: references to undefined variables are handled the same way
9 in toplevel forms as in the normal compiler
10 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
12 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
13 (thanks to Jon Buller)
14 * improvement: faster compilation times for complex functions
15 * improvement: added readlink support to SB-POSIX (thanks to Richard
18 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
19 * improvement: experimental support for mach exception handling on
20 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
22 * improvement: support for GBK external format.
23 (thanks to Chun Tian (binghe))
24 * improvement: the debugger now displays variables that have been closed
25 over, in code compiled with (DEBUG 2) or higher
26 * improvement: support for executable cores on NetBSD (thanks to
28 * new feature: added a RESTART-FRAME debugger command
29 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
30 be used to provide an implementation for FILE-POSITION on Gray streams
31 (thanks to Eric Marsden)
32 * new feature: add syslog, openlog and closelog support to SB-POSIX
33 (thanks to Richard Kreuter)
34 * optimization: the function call overhead in code compiled with
35 a high DEBUG optimization setting is significantly
36 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
37 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
38 (thanks to Tony Martinez)
39 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
40 evaluated once (reported by Kevin Reid)
41 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
42 works again (thanks to Kilian Sprotte)
43 * bug fix: an error is signaled for tagbodies with duplicate tags
44 (thanks to Stephen Wilson)
45 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
46 * bug fix: Win32 port can now handle foreign code unwinding Lisp
47 stack frames from alien callbacks.
48 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
49 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
50 65k pages (thanks to David Woodhouse)
51 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
53 changes in sbcl-1.0.1 relative to sbcl-1.0:
54 * new platform: FreeBSD/x86-64, including support for threading.
55 * new feature: the compiler stores cross-referencing information
56 abount function calls (who-calls), macroexpansion (who-macroexpands)
57 and special variables (who-binds, who-sets, who-references) for code
58 compiled with (< SPACE 3). This information is available through the
59 sb-introspect contrib.
60 * new feature: users may subclass SEQUENCE, and have instances of
61 these classes interoperate with standard Common Lisp functions if
62 a number of methods are defined. (This feature is experimental
63 and the interface subject to change based on feedback from SBCL
64 users and the general community)
65 * improvement: sb-sprof traces call stacks to an arbitrary depth on
66 x86/x86-64, rather than the previous fixed depth of 8
67 * improvement: another pthread back-end of mutex "pthread-futex".
68 * bug fix: non-ascii command-line arguments are processed correctly
69 (thanks to Yaroslav Kavenchuk)
70 * bug fix: non-required arguments were not passed correctly when a method
71 defined using DEFMETHOD was called from a mop-generated method using
72 CALL-NEXT-METHOD (reported by Pascal Costanza)
73 * bug fix: recursion is now permitted in accessors through
74 SLOT-UNBOUND. (reported by Pascal Costanza)
75 * bug fix: an error was signaled at startup if the HOME environment
76 variable was defined, but had an empty value (reported by Peter Van Eynde)
77 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
78 signal a PROGRAM-ERROR, not a BUG.
79 * bug fix: SB-POSIX:READDIR works when built with large file support.
80 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
82 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
83 for better automatic indentation support. (thanks to Matt Pillsbury)
84 * optimization: loading generic functions no longer takes O(n^2) time,
85 proportional to the amount of methods in the generic function
86 (reported by Todd Sabin and Jeremy Brown)
87 * optimization: the FIND and POSITION family of sequence functions
88 are significantly faster on arrays whose element types have been
90 * improvements to the Windows port:
91 ** Intermittent heap corruption problems have been fixed. (thanks
92 to Alastair Bridgewater)
93 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
95 ** Lisp is able to unwind foreign exception frames from alien
96 callbacks. (thanks to Alastair Bridgewater)
98 changes in sbcl-1.0 relative to sbcl-0.9.18:
99 * improvement: experimental support for threading on FreeBSD/x86.
100 (thanks to NIIMI Satoshi)
101 * improvement: runtime option --dynamic-space-size can be used
102 to set the size of the dynamic space reserved on startup.
103 * improvement: floating point modes in effect are now saved in
104 core, and restored on startup.
105 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
106 startup, not time since first call to GET-INTERNAL-REAL-TIME.
107 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
108 threads are not running after *SAVE-HOOKS* have run.
109 * improvement: writes to CLOS instance slots are type-checked in code
110 compiled with (SAFETY 3)
111 * improvement: floating-point exception handling on FreeBSD (thanks to
113 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
114 (thanks to Zach Beane)
115 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
117 * improvement: added support for the Shift-JIS external format.
118 (contributed by NIIMI Satoshi)
119 * improvement: callbacks are supported on Linux/PPC. (thanks to
121 * bug fix: compiler bug triggered by a (non-standard) VALUES
122 declaration in a LET* was fixed. (reported by Kaersten Poeck)
123 * bug fix: file compiler no longer confuses validated and already
124 dumped structurres. (reported by Kaersten Poeck)
125 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
126 fill-pointer signals a type-error as required. (thanks to
128 * bug fix: disassemly of funcallable instances works.
129 * bug fix: single stepping on PPC.
130 * bug fix: fix thread-safety problems in the type system (generally
131 manifesting as nonsensical errors like "STRING is a bad type specifier
132 for sequences" or "The value 1 is not of type FIXNUM")
133 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
134 (reported by Josip Gracin)
135 * bug fix: an error is signaled for attempts to displace arrays with
136 incompatible element types (thanks to Mario Mommer)
137 * bug fix: more correct handling of wide characters in debug info
138 (bug reported by Attila Lendvai and fixed by Juho Snellman)
139 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
140 and don't cause extra consing
141 * optimization: MAP and MAP-INTO are significantly faster on vectors
142 whose elements types have been declared.
143 * Improvements to SB-SPROF:
144 ** Support for allocation profiling
145 ** Reduced profiling overhead, especially for long profiling runs
146 * Improvements to the Windows port:
147 ** floating point exceptions are now reported correctly.
148 ** stack exhaustion detection works partially.
149 ** more accurate GET-INTERNAL-REAL-TIME.
150 ** better RUN-PROGRAM behaviour in case of errors in the child
152 ** PROBE-FILE now simplifies pathnames correctly.
153 ** DIRECTORY now works correctly with :WILD-INFERIORS.
154 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
155 1st 1970 (although time timezone data will be unreliable).
156 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
158 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
159 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
160 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
162 * bug fix: two potential GC deadlocks affecting threaded builds.
163 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
164 returns T (reported by Anton Kazennikov)
165 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
166 with non-variable places
167 * bug fix: remove a race condition in the setting of
168 funcallable-instance functions, this should make threaded CLOS
169 code more stable against memory faults.
170 * bug fix: corruption of specials when unbinding is interrupted by an
171 asynchronous unwind (reported by Hannu Koivisto)
172 * improvement: the debugger will now also display local variables that
173 are only used once, for code compiled with a DEBUG optimization quality
176 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
177 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
178 * incompatible change: External-format support for FFI calls. The
179 SB-ALIEN:C-STRING no longer implies an ASCII
180 external-format. Instead the string is subject to external-format
181 conversion. Additionally return values of type SB-ALIEN:C-STRING
182 are by default of type (SIMPLE-ARRAY CHARACTER), not
183 SIMPLE-BASE-STRING. For an alien type that behaves like the old
184 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
185 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
186 * incompatible change: SB-EXT package no longer contains the
187 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
188 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
190 * incompatible change: the single-stepper is no longer available
191 on Alpha, Mips and Sparc platforms.
192 * minor incompatible change: the direct superclasses of
193 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
194 not (STANDARD-OBJECT FUNCTION). This makes the
195 class-precedence-lists of GENERIC-FUNCTION and
196 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
198 * minor incompatible change: the default stream external format on
199 non-unicode SBCL is no longer detected from the locale, but is always
201 * new feature: Add a version of evaluator that uses an interpreter instead
202 of the compiler. EVAL still uses the compiler by default, to switch it
203 to use the interpreter, set the value of the variable
204 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
205 * minor incompatible change: the single-stepper REPL has been merged
206 with the normal debugger (see the "Stepping" heading of the debugger help
207 for more details). The debugger command STEP will no longer switch
208 to the single-stepper REPL.
209 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
210 for a type now works.
211 * bug fix: loading of default sysinit file works. (thanks to Leonid
213 * bug fix: better detection of circularities in the file-compiler.
214 (reported by Marco Monteiro)
215 * bug fix: the CL pathname functions now work with files that have
216 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
217 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
218 systems with Unix98 pty semantics.
219 * bug fix: ASDF-INSTALL will now work with bsd tar.
220 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
222 * bug fix: timers expiring in dead threads no longer cause a
223 type-error (reported by Paul "Nonny Mouse").
224 * bug fix: thanks to more lightweight single-stepper instrumentation,
225 code compiled with (DEBUG 3) will compile and execute significantly faster,
226 and will have more accurate type-inferencing than before
227 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
228 whose bindings are modified
229 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
230 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
231 ** replace dummy implementations of CL:MACHINE-INSTANCE and
232 CL:SOFTWARE-VERSION with proper version
234 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
235 * feature: implemented the READER-METHOD-CLASS and
236 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
237 as specified by AMOP.
238 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
240 * optimization: faster LOGCOUNT implementation on x86 and x86-64
241 (thanks to Lutz Euler)
242 * optimization: hashing of general arrays and vectors has been
243 improved. (reported by Any Fingerhut)
244 * enhancement: SB-INTROSPECT is now able to find definitions of
245 profiled functions. (thanks to Troels Henriksen)
246 * enhancement: compiler-macro expansion applies now to FUNCALL forms
247 as well, allowing compiler-macros for SETF-functions to expand.
248 * enhancement: step-instrumentation no longer wraps known
249 single-value functions with multiple-value context, allowing
250 better type inference.
251 * fixed bug #337: use of MAKE-METHOD in method combination now works
252 even in the presence of user-defined method classes. (reported by
253 Bruno Haible and Pascal Costanza)
254 * fixed bug #339(c): if there are applicable methods not part of any
255 long-form method-combination group, call INVALID-METHOD-ERROR.
256 (reported by Bruno Haible)
257 * fixed bug #361: the :FUNCTION initarg in the protocol for
258 initialization of methods can now be used to override
259 internally-produced optimized functions. (reported by Bruno
261 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
262 system-provided lambda expression no longer cause warnings about
263 unbound #:|pv-table| symbols.
264 * bug fix: improved the handling of type declarations and the
265 detection of violations for keyword arguments with non-constant
267 * bug fix: potentially erronous calls to PATHNAME and
268 MERGE-PATHNAMES were being flushed in some cases.
269 (reported by Richard Kreuter)
270 * bug fix: compiled calls to TYPEP were mishandling obsolete
271 instances. (reported by James Bielman and Attila Lendvai)
272 * bug fix: format strings with ~> without matching ~< no longer
273 trigger an AVER, but signal an understandable error instead.
274 (reported by Antonio Martinez)
275 * bug fix: specifying an output-file without a pathname-type for
276 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
277 of input-file instead of "fasl". (reported by Robert Dodier)
278 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
279 (reported by James Y Knight).
280 * bug fix: compiler-macros-function did not consider the environment
281 argument for shadowing by local functions.
282 * bug fix: compiler-macros expansion was inhibited by local INLINE
284 * bug fix: inline expansions of known functions were subject to
285 step-instrumentation in high debug policies, leading to problems
287 * bug fix: compiler failed to differentiate between different CONS
289 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
290 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
291 * bug fix: #368: incorrect use of expressed vs. upgraded array
293 * bug fix: #306a: more precise unions of array types.
294 * thread-safety improvements:
295 ** CONDITION-WAIT could return early on Linux, if the thread was
296 interrupted and subsequently continued with SIGCONT.
297 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
299 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
300 * added support for the ucs-2 external format. (contributed by Ivan
302 * minor incompatible change: pretty printing of objects of type
303 (cons symbol) is, in the default pprint-dispatch-table, now
304 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
306 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
307 called later in a class's lifetime, possibly as late as when the
308 first instance of the class is created. Previously,
309 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
310 class became finalizeable.
311 * fixed bug: FILE-POSITION sometimes returned inconsistent results
312 for multibyte external-format streams. (thanks to "vbzoli")
313 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
314 with :ALLOCATION :CLASS inherited from superclasses of the
316 * fixed bug: anonymous classes can now be created using the :NAME
317 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
318 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
319 * fixed bug: core-files saved with :EXECUTABLE T can again be
320 executed when SBCL_HOME isn't set. (reported by James Knight)
321 * fixed bug: toplevel LOCALLY forms with declarations could
322 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
323 * fixed bug: printing from several different threads using different
324 values of *print-case* could cause invalid output, due to
325 some internal special variables of the printer not being bound
326 thread-locally (reported by Max Mikhanosha)
327 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
328 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
329 (reported by Pascal Costanza)
330 * fixed bug: FINALIZE-INHERITANCE is called from
331 REINITIALIZE-INSTANCE on classes when the class has previously
332 been finalized, as required by AMOP.
333 * minor code generation optimizations:
334 ** better register allocation in CLOS dispatching functions
335 ** overflow detection when coercing signed bytes to fixnums on x86-64
336 ** is now implemented with one IMUL instruction instead of three shifts
337 ** more efficient bit-vector access on x86 and x86-64
338 ** more efficient access to raw structure slots on x86 and x86-64
339 * fixed some bugs revealed by Paul Dietz' test suite:
340 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
343 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
344 * feature: thread support on Solaris/x86, and experimental thread support
346 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
348 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
349 default method for SLOT-UNBOUND.
350 * minor incompatible change: prevent the user from specializing the
351 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
352 somewhat counter to the intent of the protocol, I (CSR) think, and
353 additionally it just doesn't work in SBCL as currently
354 implemented, thanks to optimizations (that are always valid for
355 the other three SLOT-VALUEish functions, but not for the setter).
356 * minor incompatible change: the :SB-LDB feature is now enabled by
357 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
358 the low-level debugger.
359 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
360 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
361 down to an SB-SYS:FD-STREAM, allowing direct communication in
362 more cases. Temporary files and pipes are still used as a fallback
364 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
365 on the non-reentrant C functions localtime(3) and gmtime(3).
366 * bug fix: global optimization policy was not visible in LOCALLY and
368 * bug fix: class objects can be used as specializers in methods.
369 (reported by Pascal Costanza)
370 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
371 with a type error. (reported by blitz_ on #lisp)
372 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
373 failed with a type error. (reported by Pascal Bourguignon)
374 * bug fix: merging pathnames against defaults with :DIRECTORY
375 starting with '(:RELATIVE :BACK) should preserve the :BACK.
376 (reported by James Y Knight)
377 * bug fix: saving large (>2GB) cores on x86-64 now works
378 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
379 constant index and a (simple-array (signed-byte 32)) array
380 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
381 error (patch by Robert J. Macomber)
382 * feature: TIME now displays the amount of run-time spent in GC
383 * bug fix: The debugger now does a better job of respecting
384 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
385 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
386 workaround for bug 403.)
387 * bug fix: floating point exception handling now works on FreeBSD
388 (thanks to NIIMI Satoshi)
389 * fixed some bugs revealed by Paul Dietz' test suite:
390 ** MISC.641: LET-conversion were not supposed to work in late
392 * improvements to the Win32/x86 port:
393 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
394 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
396 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
397 * new feature: source path information is generated for macro-expansion
398 errors for use in IDE's like Slime (thanks to Helmut Eller)
399 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
400 * bug fix: compiler does not loop forever on an invalid type in
402 * improvement: compilation of most CLOS applications is significantly
404 * optimization: added a limited bytecode compiler for simple toplevel
405 forms, speeding up compilation and FASL loading
406 * bug fix: the statistical profiler now properly distinguishes anonymous
409 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
410 * minor incompatible change: in sbcl-0.9.11 (but not earlier
411 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
412 into subclasses of the finalized class. Now user calls to
413 FINALIZE-INHERITANCE finalize just the one class, and calls by the
414 system return before any subclasses are finalized.
415 * minor incompatible change: The reader no longer ignores errors
416 regarding non-existent packages in #+ and #- feature tests.
417 * new feature: command line options --no-sysinit, --no-userinit to
418 inhibit loading the corresponding init files
419 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
420 for sending data through UDP sockets (thanks to François-René Rideau)
421 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
422 error is signalled instead (thanks to François-René Rideau)
423 * minor incompatible change: Error signalling behaviour of lexical
424 operations violating package locks has changed slightly. Refer to
425 documentation on package locks for details.
426 * enhancement: EVAL can process IF-expressions without resorting to the
428 * bug fix: Some operations involving SIN, COS, or TAN weren't being
429 constant-folded properly due to missing out-of-line functions.
430 (reported by Mika Pihlajamäki)
431 * bug fix: LISTEN sometimes returned T even in cases where no data was
432 immediately available from the stream
433 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
434 were reversed. (reported by Levente Mészáros)
435 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
436 when given a vector displaced to an adjustable array. (reported
438 * bug fix: derivation of float boundaries from numbers outside the
439 appropriate float range (reported by John Wiseman)
440 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
442 * bug fix: precomputing cache entries for generic functions with
443 some subclasses of specializers as yet invalid does not attempt to
444 fill a cache line with a negative offset. (reported by Levente
446 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
447 allow condition class objects as arguments to DOCUMENTATION and
448 (SETF DOCUMENTATION); only find and set documentation for
449 structure names for the STRUCTURE doc-type. (suggested by Gary
451 * improvements to the Win32/x86 port:
452 ** (user-homedir-pathname) and default initialization file
453 locations now know about the user's "Documents and Settings"
454 directory (thanks to Yaroslav Kavenchuk)
455 ** run-program is implemented (thanks to Mike Thomas)
456 ** sockets support (thanks to Timothy Ritchey)
457 ** better backtrace support (thanks to Alastair Bridgewater)
458 ** sb-grovel supported
459 ** asdf-install and sb-posix work somewhat
460 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
461 * improvements to the Solaris/x86 port:
462 ** works on Solaris 11/Solaris Express
463 ** floating-point exception handling support
464 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
465 * fixed some bugs revealed by Paul Dietz' test suite:
466 ** REMOVE-METHOD returns its generic function argument even when
467 the method is not one of the generic functions' methods.
468 ** objects declared as MEMBER types can be admissible arguments to
470 ** printing characters should simply be printed by the FORMAT ~:C
472 ** compiler failure when compiling functions with hairy constant
473 defaults for optional parameters.
474 ** compiler produces wrong code when MAYBE-INLINE-expanding a
475 function, which is already optimized.
477 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
478 * new platform: experimental support for SBCL x86/Darwin, including
479 MacOS X 10.4.5 on Intel.
480 * new feature: Unicode character names are now known to the system
481 (through CHAR-NAME and NAME-CHAR).
482 * new feature: the filesystem location of SBCL's core file is
483 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
484 * minor incompatible change: the contrib modules SB-POSIX and
485 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
486 this change is to make it easier to distribute
487 location-independent binaries.
488 * bug fix: as implied by AMOP, standardized classes no longer have
489 slots named by external symbols of public packages. (reported by
491 * optimization: calling functions via constant symbols -- as in
492 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
493 via the function object as in (FUNCALL #'FOO).
494 * optimization: on x86 and x86-64, the calling convention for the
495 case of dealing with an unknown number of values has been altered
496 to be friendlier to the prediction heuristics implemented,
497 particularly with reference to CALL and RET pairing. (thanks to
498 Alastair Bridgewater)
499 * optimization: on x86, the code for access to thread-local symbol
500 values and binding/unbinding of thread-local symbols is smaller.
501 (thanks to Alastair Bridgewater)
502 * enhancement: CONSTANTP is now able to determine constantness of
503 more complex forms, including calls to constant-foldable standardized
504 functions and some special forms beyond QUOTE.
505 * fixed bug: occasional GC crashes on Solaris/x86
506 * optimization: x86-64 supports stack allocation of results of simple
507 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
508 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
509 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
510 (thanks to James Knight)
511 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
512 by the standard (thanks to Stephen Compall)
514 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
515 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
516 be used for bundling the runtime and the core file into one
517 executable binary. This feature is not currently supported on all SBCL
518 platforms. (thanks to James Bielman and NIIMI Satoshi)
519 * new feature: a generational or ephemeral garbage collector is now
520 the default on the PowerPC platform (both Linux and Darwin). The
521 old Cheney (stop and copy) collector is a build-time option.
522 (thanks to Cyrus Harmon, after Raymond Toy)
523 * minor incompatible change: the method by which SBCL finds its
524 contributed modules has changed; it no longer relies on symbolic
525 links from an $SBCL_HOME/systems directory, but searches directly
526 in the subdirectories of $SBCL_HOME.
527 * enhancement: the dynamic heap size on the Linux/PPC platform is
528 markedly larger, even using the older Cheney garbage collector.
529 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
530 certain complicated string types. (reported by Gary King)
531 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
532 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
533 * fixed bug: DOCUMENTATION on structures no longer signals an
534 error if no structure type of the right name exists. (reported by
536 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
537 applicable non-standard primary or :AROUND method on
538 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
539 no longer cause unbound variable errors. (reported by Kevin Reid)
540 * fixed bug: metacircle resolution in cases where methods have slots
541 added before the slots from STANDARD-METHOD. (reported by Jean
543 * fixed bug: the Power PC assembly code for calling into lisp
544 sometimes computed its return address wrongly (depending on the
545 15th bit of the address, fixed at link time). This used to
546 manifest itself in a segmentation violation while building PCL.
547 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
548 many others over the years)
549 * fixed bug: ROOM no longer reports silly numbers for stack usage if
550 the stack pointer (treated as a signed integer) is negative.
551 (thanks to Peter van Eynde)
553 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
554 * new platform: experimental support for the Windows operating
555 system has been added. (thanks to Alastair Bridgewater)
556 * fixed several bugs in and robustified the PPC FFI (including
557 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
558 * bug fix: allow non-simple string symbol names (reported by Paul
560 * bug fix: interrupt handling on NetBSD (thanks to Richard M
562 * bug fix: saving a core corrupted callbacks on x86/x86-64
563 * bug fix: closed a loophole in metacircularity detection and
564 grounding in the PCL implementation of CLOS.
565 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
566 (reported by tomppa on #lisp)
567 * bug fix: clear the direction flag on Lisp -> C transitions, as
568 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
569 (reported by Andrej Grozin and Hendrik Maryns)
570 * optimization: major improvements to GC efficiency on GENCGC platforms
571 * optimization: faster implementation of EQUAL
572 * optimization: emit more efficient opcodes for some common
573 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
574 * optimization: several other minor code-generation improvements on x86-64
575 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
577 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
578 * minor incompatible change: (SETF CLASS-NAME) and (SETF
579 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
580 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
581 by ANSI as a generic function, and for consistency (SETF
582 GENERIC-FUNCTION-NAME) is treated likewise.
583 * fixed bug #233.b: make constraint propagation notice when a variable
584 value is changed after it is referenced but before it is used
585 * fixed bug #296: no more arbitrary behaviour from filenames with
586 odd characters as --load arguments. (reported by Adam Warner)
587 * fixed bug #390: :CHARACTER-SET pathname components now work as
588 expected. (reported by Tim Daly Jr)
589 * fixed bug #391: complicated :TYPE intersections in slot
590 definitions no longer cause an error in PCL internals.
591 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
592 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
593 returning the number of octets which would be written to the
594 file-stream. (thanks to Robert J. Macomber)
595 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
596 arguments to the internal stream functions. (thanks to David
598 * bug fix: stack exhaustion is now handled on the x86/SunOS
599 platform. (thanks to Daisuke Homma)
600 * bug fix: more accurate ROOM results on GENCGC platforms
601 * optimization: improved type inference for arithmetic-for
602 index variables in LOOP
603 * optimization: faster floating-point SQRT on x86-64
604 * fixed some bugs revealed by Paul Dietz' test suite:
605 ** DOCUMENTATION returns NIL instead of "" for method combinations
606 that don't have a docstring
608 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
609 * minor incompatible change: (SETF CLASS-NAME) and (SETF
610 GENERIC-FUNCTION-NAME) are no longer generic functions, and
611 therefore are not customizeable by user code (as seems to be at
612 least permitted and maybe required by AMOP). As a consolation,
613 however, the SBCL implementation of these functions now calls
614 REINITIALIZE-INSTANCE as specified by AMOP.
615 * bug fix: slot-definition documentation is propagated as per ANSI
616 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
617 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
618 argument, as do eslotd initialization methods. (from Pascal
619 Costanza's "Closer" project)
620 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
621 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
623 * bug fix: it is now possible to have more than one subclass of
624 STANDARD-GENERIC-FUNCTION without causing stack overflow.
625 (reported by Bruno Haible, Pascal Costanza and others)
626 * bug fix: the dependent update protocol now works for generic
627 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
629 * bug fix: condition-class instances corresponding to
630 DEFINE-CONDITION forms are now created eagerly. (reported by
631 Kalle Olavi Niemitalo on comp.lang.lisp)
632 * bug fix: floating point printing is more accurate in some
633 circumstances. (thanks to Simon Alexander)
634 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
635 merged with *DEFAULT-PATHNAME-DEFAULTS*.
636 * bug fix: callbacks on OS X now preserve stack-alignment.
637 (thanks to Cyrus Harmon)
638 * enhancement: the x86-64 disassembler is much better at
639 disassembling SSE instructions. (thanks to Lutz Euler)
640 * enhancement: CHECK-TYPE on a variable now allows type-inference
641 (thanks to Vincent Arkesteijn)
642 * optimization: improved performance of EUC-JP external format.
643 (thanks to NIIMI Satoshi)
644 * optimization: performance improvements to IO on file streams of
645 :ELEMENT-TYPE CHARACTER
646 * optimization: much faster memory allocation on x86-64
647 * optimization: faster garbage collections (latency and throughput)
649 * optimization: faster bignum subtraction and division on x86 and x86-64
650 (thanks to Lutz Euler)
651 * optimization: more accurate type-inference for loops that use a
652 floating point index variable or a negative step.
654 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
655 * bug fix: add a workaround to SBCL looping infinitely at startup on
656 Linux kernels with apparently buggy implementations of personality().
657 (thanks to Svein Ove Aas)
658 * bug fix: Unicode symbols are correctly printed in LDB backtraces
659 (thanks to David Lichteblau)
660 * bug fix: local bindings shadow global symbol macros for
661 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
662 * optimization: non-open coded uses of numeric comparison operators
663 (e.g. >) no longer cons when called with more than one parameter
664 on platforms supporting dynamic-extent allocation.
665 * enhancement: saving cores with foreign code loaded is now supported
666 on MIPS/Linux in addition to the previously supported platforms.
667 * bug fix: FIND-RESTART now tests for activity, not applicability when given
668 a restart object as identifier. (reported by Helmut Eller for CMUCL)
669 * bug fix: division by zero in sb-sprof when no samples were collected
670 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
671 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
672 (thanks to Alexander Kjeldaas)
673 * new feature: ignoring the return values of destructive functions
674 like NREVERSE signals a compile-time style-warning.
675 (thanks to Kevin Reid)
676 * new feature: the alignment of alien structure fields can be
677 explicitly specified. (thanks to Cyrus Harmon)
678 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
679 and dump core on SIGQUIT
681 ** incompatible change: threads do not inherit values of specials
682 from their parents (see manual)
683 ** bug fix: threads stacks belonging to dead threads are freed by the
684 next exiting thread, no need to gc to collect thread stacks anymore
685 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
686 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
687 ** bug fix: dynamic variable and thread start related gc lossage
688 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
690 * fixed some bugs revealed by Paul Dietz' test suite:
691 ** SUBTYPEP is slightly more accurate on heinously complicated
692 CONS types where some of the members have uncertain (in the
693 NIL, NIL sense) type relationships to each other.
695 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
696 no longer purified unless :PURIFY T is explicitly specified.
697 ** Non-purified cores are significantly smaller than before
699 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
700 * new feature: timers based on Zach Beane's excellent timer package
701 * added support for the following external formats: koi8-u,
702 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
703 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
704 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
705 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
706 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
707 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
708 * incompatible change: a threaded SBCL will no longer revert to
709 non-threaded mode on non-NPTL systems, but refuse to start entirely.
710 * bug fix: interrupts are disabled until startup is complete; no
711 more sigsegvs when receiving a signal to soon
712 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
714 * bug fix: add a workaround for the memory randomization features in
715 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
716 workaround will only be in effect on systems with the proc filesystem
718 * bug fix: printing objects of type HASH-TABLE signals a
719 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
721 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
722 have been running for over 50 days. (reported by Gilbert Baumann)
723 * bug fix: the logic for getting names of functions gets less
724 confused when confronded with alternate-metaclass
725 funcallable-instances. (reported by Cyrus Harmon)
726 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
727 consistent, even on internal alternate-metaclass objects.
728 * bug fix: flush closure information collected by physical
729 environment analysis prepass before the main pass. (bug reported
731 * bug fix: compiler pack phase does not modify a hashtable, which is
732 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
733 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
734 may be expanded. (reported by Alexander <malishev> on c.l.l)
735 * bug fix: no more style-warnings when compiling code using LAST
736 under high-SPEED low-SPACE settings. (reported by David Wallin
738 * fixed some incompatibilities between SBCL's MOP and the MOP
740 ** the METAOBJECT class is now implemented;
741 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
742 STANDARD-OBJECT, as required;
743 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
744 now compatible (as required by VALIDATE-SUPERCLASS); there
745 remains a consistency requirement over the presence or absence
746 of the FUNCTION class in the superclass list of finalized
747 classes; see the manual for more details;
748 ** the :AROUND method for COMPUTE-SLOTS on
749 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
750 requested slot ordering.
752 ** bug fix: parent thread now can be gc'ed even with a live
754 ** bug fix: binding a special with PROGV to no value is not
755 the same as that symbol not having been bound (thanks to
757 ** bug fix: binding specials is thread safe (thanks to
759 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
760 and SB-SPROF do not die with 'no handler for signal XX in
761 interrupt_handle_now(..)' anymore
762 ** bug fix: WITH-TIMEOUT works with multiple running threads
763 * fixed some bugs revealed by Paul Dietz' test suite:
764 ** ENSURE-GENERIC-FUNCTION should take a method class object for
765 the :method-class keyword argument.
767 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
768 * new port: the Solaris operating system on x86 processors is now
769 mostly supported, though some rough edges in the environment
770 remain. (thanks to Daisuke Homma)
771 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
772 space for its heap. (thanks to Thiemo Seufer)
773 * optimization: SBCL on MIPS platforms now supports dynamic-extent
774 closures. (thanks to Thiemo Seufer)
775 * minor incompatible change: eof selects abort in the debugger.
776 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
777 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
779 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
780 deprecated, and will go away in a future revision of SBCL.
781 * minor incompatible change: GC-ON and GC-OFF are no longer
782 implemented with a counter, it does not matter how many times gc
783 is switched on or off
784 * bug fix: discriminating functions for generic function classes
785 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
786 make invalid assumptions about method precedence order. (reported
788 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
789 platforms. (thanks to Thiemo Seufer)
790 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
791 * bug fix: correct pathname printing with printer escaping is on.
792 (thanks to Kevin Reid)
793 * bug fix: complex VOP definitions in "user-space" no longer trigger
794 package locks. (reported by Zach Beane)
795 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
796 for funcallable-instance functions, and is no different from
798 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
799 characters in the current readtable. (reported by Nicholas Neuss)
800 * bug fix: SUBTYPEP on various CONS types returns more a more
801 accurate acknowledgment of its certainty.
802 * optimizations: REMOVE-DUPLICATES now runs in linear time on
803 lists in some cases. This partially fixes bug 384.
804 * flush all standard streams before prompting in the REPL and the
806 * bug fix: signal handling and triggering gc do not conflict
807 directly anymore, in particular a high frequency sb-sprof does
808 not prevent gc from running
809 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
810 approximation for timezone and DST information between the
811 universal time epoch and the smallest negative 32-bit time_t.
812 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
813 year 1899 so long as the encoded time is non-negative.
814 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
815 the correct answer for non-constant rotate amounts when performing
816 an inline 32-bit rotation.
818 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
819 there is only one thread in the session
820 ** bug fix: memory leak for streams created in one thread and
821 written to in another
822 ** bug fix: lockup when compiled with gcc4
823 ** bug fix: race that allows the gc to be triggered when gc is
825 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
826 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
828 ** bug fix: finished threads are gc'ed properly
829 * fixed some bugs revealed by Paul Dietz' test suite:
830 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
831 has arguments with a different set of applicable methods from
832 the orignal arguments.
833 ** The type error thrown by MAP now has a correct expected-type
835 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
836 name a compiled function.
837 ** Three MISC tests where a large bignum was improperly coerced to
838 a float that couldn't represent that bignum during type
839 derivation were fixed.
840 ** SUBTYPEP can now handle types involving the negation of a
841 list-form FUNCTION type.
842 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
843 as (COMPLEX (AND RATIO (NOT FIXNUM))).
844 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
846 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
847 * New feature: Experimental support for bivalent streams: streams
848 opened with :element-type :default now allow character and binary
849 (unsigned-byte 8) I/O
850 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
851 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
853 * bug fix: no more highly sporadic "couldn't check whether ~S is
854 readable" when reading a stream and an interrupt hits in the middle
855 of a select system call
856 * compiler better recognizes complex arrays (reported by Eduardo
858 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
859 for variables on SBCL built with linkage-tables. (reported by Luis
861 * various error reporting improvements.
862 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
863 (Thanks to Thiemo Seufer)
864 * bug fix: nested reader invokations work correctly
865 * bug fix: it is possible to have simultaneous references to foreign
866 code and foreign data with the same name.
868 ** added x86-64 support
869 ** incompatible change: the threading api now works with thread
870 objects instead of thread ids
871 ** bug fix: threads are protected from signals and interruption when
872 starting up or going down
873 ** bug fix: a race where an exiting thread could lose its stack to gc
874 ** bug fix: don't halt on infinite error in threads if possible
875 ** fixed numerous gc deadlocks introduced in the pthread merge
876 ** bug fix: fixed thread safety issues in read and print
877 ** bug fix: debugger doesn't hang on session lock if interrupted at
878 an inappropriate moment
879 ** bug fix: run-program is now thread safe(r)
880 ** bug fix: inner with-recursive-lock no longer releases the mutex
881 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
882 * fixed some bugs revealed by Paul Dietz' test suite:
883 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
884 EXPECTED-TYPE slots filled.
885 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
887 ** MAKE-CONDITION accepts classes as type-designators.
888 ** COMPILE may never return NIL.
889 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
890 range before calling Unix time functions
892 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
893 * numerous signal handling fixes to increase stability
894 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
895 * minor incompatible change: we now correctly canonize default
896 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
897 as per the MOP, rather than the historical (INITARG INITFUNCTION
898 INITFORM). (reported by Bruno Haible)
899 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
900 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
901 for more information.
902 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
903 pathname is a directory pathname.
904 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
905 * dynamic space size on PPC has been increased to 768Mb. (thanks to
907 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
908 :METACLASS argument in addition to a class name. (reported by
909 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
910 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
911 (reported by Bruno Haible; patch from Gerd Moellmann)
912 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
914 * bug fix: more cleanups to the floating point exception handling on
915 x86-64 (thanks to James Knight)
916 * bug fix: the compiler does not try to constant fold calls of
917 COERCE and BIT-* functions when they return freshly constructed
918 objects. (reported by Nikodemus Siivola and Paul Dietz)
919 * optimization: improved the MIPS versions of generic (in the
920 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
921 * optimization: direct conversion of (unsigned-byte 32) to floats on
922 the PowerPC platform.
923 * optimization: structure instances with raw slots now use less
924 memory, and probably show better memory locality. (thanks to
926 * optimization: DYNAMIC-EXTENT declarations for lists and closures
927 are treated as requests for stack allocation on the x86-64,
928 Alpha-32, PPC and SPARC platforms.
929 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
930 the wrong file descriptor; implementation of SOCKET-OPEN-P.
931 (thanks to Tony Martinez)
933 ** gcing a dead thread can no longer lead to lockups
934 ** threads block signals until they are set up properly
935 ** errno is no longer shared by threads
936 ** interrupt-thread restores the eflags register on x86
937 ** fixed some lockups due to gc/thread interaction
938 * fixed some bugs revealed by Paul Dietz' test suite:
939 ** invalid dotted lists no longer raise a read error when
941 ** signal an error if a symbol that names a declaration is used
942 as the name of a type, or vice versa
943 ** allow using the (declare (typespec var*)) abbreviation for
944 (declare (type typespec var*)) with all type specifiers
945 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
946 ** always return NIL from PPRINT-POP when OBJECT is NIL
947 ** don't signal errors when pretty-printing malformed LABELS,
948 FLET or MACROLET forms
949 ** declarations in a DOLIST body are also in scope for the
951 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
953 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
956 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
957 * fixed cross-compiler leakages that prevented building a 32-bit
958 target with a 64-bit host compiler.
959 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
960 opened with :IF-EXISTS :OVERWRITE.
961 * fixed bug 281: error for an invalid qualifier in a short-form method
962 combination method is not signalled until the faulty method is called.
963 * bug fix: iteration variable type inferrer failed to deal with open
964 intervals. (reported by Alan Shields)
965 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
966 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
967 or more runtime options were provided to the sbcl binary.
968 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
969 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
970 * optimization: there's now a fast-path for fixnum arguments in the
971 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
972 * optimization: the code generated on x86-64 is more compact thanks
973 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
974 * bug fix: floating-point exception handling now partly works on
975 x86-64. (Thanks to James Knight)
976 * improvement to the MIPS backend from Thiemo Seufer: C-style
977 64-bit long long arguments and return values to alien functions
979 * fixed some bugs revealed by Paul Dietz' test suite:
980 ** the type-error signalled from WARN has a filled-in DATUM slot.
981 ** the type-error required when a stream is not associated with
982 a file has the stream as its datum.
983 ** type-errors on single-floats on x86-64 no longer have
984 :INVALID-OBJECT as the datum
985 ** the type-errors signalled for invalid function names now have
986 a correct expected type
987 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
988 for structures defined with a :TYPE. Documentation strings for
989 typed structures are no longer immediately discarded
990 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
991 broadcast streams and synonym streams. FILE-LENGTH now also works
992 on broadcast streams.
994 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
995 * incompatible change: the --noprogrammer option, deprecated since
996 version 0.7.5, has been removed. Please use the equivalent
997 --disable-debugger option instead.
998 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1000 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1001 inoperational for a while now) has been completely removed.
1002 * null lexical environments are now printed as #<NULL-LEXENV>,
1003 significantly reducing the amount of clutter in typical backtraces.
1004 * documentation on weak pointers, finalization, and after GC hooks
1005 has been added to the manual.
1006 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1007 as other specialized array types, is much faster. SUBSEQ and
1008 COPY-SEQ on such arrays have also been sped up.
1009 * optimization: EQL is now more efficient when at least other argument
1010 is known to be of type (OR FIXNUM (NOT NUMBER)).
1011 * fixed bug: the runtime is now less vulnerable to changes in the
1012 size of the SBCL object on OS X, and virtual memory is reserved for
1013 all spaces that need to be at a fixed address.
1014 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1015 * fixed bug: finalizers and after GC hooks that cause consing are now
1017 * fixed bug: compiler error messages and summaries are now printed to
1018 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1019 * fixed inference of the upper bound of an iteration variable.
1020 (reported by Rajat Datta).
1021 * fixed bug 211e: calling local functions with duplicated constant
1022 keyword argument no longer causes a bogus style warning about an
1024 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1025 ftype declaration to be disregarded. (reported by Dave Roberts)
1026 * fixed bug 373: caused by erronous compilation of references to alien
1027 variables in the runtime on ppc/darwin.
1028 * fixed bug 376: CONJUGATE type deriver.
1029 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1030 (reported by Baughn on #lisp)
1031 * a cross-compiler bug on non-x86 platforms has been identified and
1032 fixed. (thanks to Bruno Haible)
1033 * improvements to the MIPS runtime code for increased stability.
1034 (thanks to Thiemo Seufer)
1035 * increased the maximimum compact environment size to allow
1036 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1037 * partial workaround for bug 135: don't name the function we're
1038 calling for hairy cases of EVAL, so as not to accumulate one environment
1039 entry per call to EVAL. (reported by Kevin Reid)
1040 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1041 * optimization: type testing for non-vector arrays should be faster.
1042 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1044 * bug fix: setting 31st element of a bit vector to zero did not work
1046 * bug fix: redefining a class definition which failed due to a
1047 previous accessor / function clash now works (but see BUGS entry
1048 #380 for more problems in this area). (thanks to Zach Beane)
1049 * the long form of DEFINE-METHOD-COMBINATION disables method group
1050 checking when given a single method group with pattern *. (thanks
1052 * on x86 compiler supports stack allocation of results of simple
1053 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1054 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1055 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1056 * fixed some bugs related to Unicode integration:
1057 ** the restarts for recovering from input and output encoding
1058 errors only appear when there is in fact such an error to
1060 * fixed some bugs revealed by Paul Dietz' test suite:
1061 ** MISC.549 and similar: late transformation of unsafe type
1062 assertions into derived types caused unexpected code
1064 ** SCALE-FLOAT type deriver is less wrong.
1065 ** type derivers for EXP, LOG and similar functions compute result
1066 types for complex arguments better.
1067 ** (MISC.563) CONJUGATE type deriver works for very restricted
1069 ** out-of-line type testers for character strings are available.
1070 ** EQUAL compiler transform understands specialness of objects
1072 ** accessing double-floats stored on the stack now works on x86-64.
1073 ** debugger internals could sometimes create invalid lispobjs,
1074 resulting in GC crashes.
1075 ** MISC.548: type check weakening can convert required type into
1077 ** initialization forms for bindings are not in scope of free special
1080 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1081 * incompatible change: thread support for non-NPTL systems has
1082 been removed - locking is buggy and unreliable. A threaded
1083 SBCL build will now warn at startup and refuse to create
1084 new threads, unless futex support is detected in the kernel
1085 * incompatible change: the top level REPL now has only an ABORT
1086 restart associated with it, not TOPLEVEL and ABORT as it used to.
1087 TOP and TOPLEVEL are now available as debugger commands for
1088 returning to the top level.
1089 * incompatible change: forms evaluated in the REPL now use the
1090 global optimization policy.
1091 * incompatible change: user- and system-initialization files are
1092 no longer processed with LOAD, but by READ and EVAL; hence the
1093 global optimization policy, startup package, readtable, etc,
1095 * The .fasl file format number has been incremented because of
1096 various incompatible changes.
1097 * internal entry point details and argument counts no longer appear
1098 in backtraces unless explicitly requested by setting
1099 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1100 * built-in and standard functions no longer have names like "top
1101 level local call to FOO".
1102 * fixed bug 32: functions defined in non-null lexical environments
1103 now have more legible printed representation
1104 * fixed bug 33: functions defined in non-null lexical environemnts
1105 are now more amenable to inspection by INSPECT.
1106 * workaround for bug 354: XEPs no longer appear in backtraces unless
1107 explicitly requested.
1108 * fixed bug: receiving the signal which results from attempting to
1109 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1110 SIGBUS on other *BSDs) on architectures where the C stack is also
1111 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1112 to debugger confusion or wild instability. (reported by Cheuksan
1114 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1115 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1116 (reported by Lutz Euler)
1117 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1118 compiled code. (reported by Paul Dietz)
1119 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1120 specialized parameter to a method to something that is not TYPEP
1121 the specializer is now possible.
1122 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1123 face of package deletion.
1124 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1125 pathname. (reported by David Tolpin on c.l.l)
1126 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1127 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1128 STRING-STREAM and FILE-STREAM, respectively.
1129 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1130 than previously; in addition, its test suite is now run on build.
1131 (thanks to Luke Gorrie)
1132 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1133 * optimization: added a immediate representation for single-floats
1135 * fixed some bugs revealed by Paul Dietz' test suite:
1136 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1137 ** attempting to create a package with a colliding nickname causes
1138 correctable errors to be signalled.
1139 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1140 ** several x86-64 backend bugs related to sign-extension of immediate
1143 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1144 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1145 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1147 * fixed loading of multiply forward-referenced layouts.
1148 (thanks to Cheuksan Wang)
1149 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1150 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1151 (see COMPILE-FILE documentation for details of :PRINT option)
1152 * fixed bugs 19 and 317: fixed-format floating point printing is
1153 more accurate. This also fixes a bug reported by Adam Warner
1154 related to the ~@F format directive.
1155 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1157 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1158 dispatch table if the from-char is a dispatch macro character.
1159 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1160 by the wordsize no longer ignore the last word. (reported by Lutz
1162 * fixed bug in type checking of dynamic-extent variables. (reported
1164 * optimization: sequence traversal functions use their freedom to
1165 coerce function designators to functions.
1166 * optimization: code with many calls to CLOS methods specialized on
1167 CLOS classes has had redundant type checks removed.
1168 * optimization: added declarations to speed up operations that access
1169 the internal character database (for example STRING-UPCASE)
1170 * optimization: comparison operations between floats and sufficiently small
1171 fixnums no longer create extra rationals
1172 * fixed some bugs related to Unicode integration:
1173 ** portions of multibyte characters at the end of buffers for
1174 character-based file input are correctly transferred to the
1175 start of the buffer at the next read.
1176 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1177 passing it through to OPEN.
1178 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1179 argument given to internal calls to OPEN.
1180 ** the built-in comment readers (introduced by character sequences
1181 ";" and "#|") are more forgiving to encoding errors; they will
1182 STYLE-WARN and then attempt to resync the stream at a character
1183 boundary. (thanks to Teemu Kalvas)
1184 * fixed some bugs in the x86-64 port:
1185 ** Negative short int return values from c-calls are sign-extended
1187 ** The stack is aligned to 16-bytes for c-calls, as required by
1188 the ABI. (thanks to Cheuksan Wang)
1189 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1190 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1191 for enums. (thanks to Vincent Arkesteijn)
1192 ** Multiple small optimizations and bugfixes for floating point
1194 * fixed some bugs revealed by Paul Dietz' test suite:
1195 ** Space, Tab, Linefeed, Return and Page have the invalid
1196 secondary constituent character trait.
1197 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1199 ** WITH-INPUT-FROM-STRING should only update the index place on
1201 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1202 works more reliably.
1203 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1204 with one-dimensional arrays with fill pointers.
1205 ** TYPE-OF failed on a complex with an integer realpart and a
1207 ** compiler failure during type inference for the code of form
1208 (IF (EQL X (THE ...)) ...) (MISC.535).
1210 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1211 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1212 platform. The port supports 61-bit fixnums, large memory spaces
1213 and reloading shared object files.
1214 * enhancement: saving cores with foreign code loaded is now
1215 supported on ppc/Darwin in addition to the previously supported
1217 * enhancement: the statistical profiler now walks deeper into the
1218 call stack for more meaningful call-graphs and accrued time
1219 reports (x86/x86-64 only). It also now reports time spent in
1221 * enhancement: it is now possible to trace most individual methods
1222 of a generic function in addition to tracing the generic function
1224 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1226 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1227 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1228 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1229 produces an error. (thanks to Vincent Arkesteijn)
1230 * bug fix: NAMESTRING on pathnames with :WILD components in their
1231 directories works correctly. (thanks to Artem V. Andreev)
1232 * fixed bug 125: compiler preserves identity of closures. (reported
1234 * bug fixed: functions with &REST arguments sometimes failed with
1235 "Undefined function" when compiled with (DEBUG 3). (reported by
1237 * bug fix: overflow during compiling of setting element of a bit
1238 vector with constant index and value. (reported by Timmy Douglas)
1239 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1240 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1241 * on x86 compiler partially supports stack allocation of dynamic-extent
1243 * GO and RETURN-FROM do not check the extent of their exit points
1244 when compiled with SAFETY 0.
1245 * fixed some bugs related to Unicode integration:
1246 ** encoding and decoding errors are now much more robustly
1247 handled; it should now be possible to recover even from invalid
1248 input or output to the terminal. (thanks to Teemu Kalvas)
1249 ** provided a first cut at implementing STRING-TO-OCTETS and
1250 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1251 ** altered the SB-MD5 contributed module slightly, changing the
1252 interface just enough for it to be supportable for builds where
1253 lisp characters are not eight bits.
1254 * fixed some bugs revealed by Paul Dietz' test suite:
1255 ** the FORMATTER-generated functions for ~V[ conditionals require
1256 the correct number of arguments.
1257 ** READ-FROM-STRING returns the mandated second value when applied
1258 to displaced strings.
1259 ** the #\Rubout and #\Backspace characters are treated as invalid
1260 constituent characters by the tokenizer.
1262 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1263 * new feature: reloading changed shared object files with
1264 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1265 * new feature: references to foreign variables and functions
1266 can now be compiled and loaded before the corresponding shared
1267 object file is loaded, as long as the foreign definitions are
1268 available at runtime.
1269 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1270 supported. (thanks to Dan Debertin)
1271 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1272 just keywords. (thanks to Vincent Arkesteijn)
1273 * fixed bug #331: structure-class instances corresponding to
1274 DEFSTRUCT forms are now created eagerly.
1275 * fixed bug #345: backtraces from calls to undefined functions work
1276 on x86 as well. Related bug #61 is now also partially fixed on x86
1277 (backtraces from throws to unknown catch tags.)
1278 * bug fix: lambda-list parsing is now stricter vrt. order and number
1279 of lambda-list keywords.
1280 * bug fix: as specified by AMOP, an error is signalled if a
1281 class-option appears multiple times in a DEFCLASS form. (reported
1283 * bug fix: RANDOM can be compiled when the compiler derives the type
1284 of its numeric argument as a disjoint set of small integers.
1285 (reported by Paul Dietz)
1286 * bug fix: starting a core saved with shared objects loaded when
1287 those objects are not available no longer causes threaded SBCL to
1288 hang. (reported by Sean Ross)
1289 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1291 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1292 argument, which must always be NIL. (reported by Kalle Niemitalo)
1293 * bug fix: printing 1.0d+23 no longer results in an error.
1294 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1295 * bug fix: structure slot setters preserve evaluation order. (thanks
1297 * fixed some bugs related to Unicode integration:
1298 ** RUN-PROGRAM can allow its child to take input from a Lisp
1299 stream. (reported by Stefan Scholl)
1300 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1301 locales. (reported by Ken Causey)
1302 * fixed some bugs revealed by Paul Dietz' test suite:
1303 ** INCF, DECF and REMF evaluate their place form as specified in
1305 ** FORMATTER expands ~{ ~} iteration directives with V or #
1306 parameters correctly.
1307 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1308 consequent uses no arguments correctly.
1309 ** the system has a partial understanding of the (COMPLEX RATIO)
1311 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1314 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1315 * new feature: a build-time option (controlled by the :SB-UNICODE
1316 keyword feature, enabled by default) for building the system with
1317 support for the entire 21-bit character space defined by the
1319 * new feature: the system now has rudimentary external-format
1320 support; the primary user-visible change at this time is that
1321 characters with the high bit set (such as lower-case-e-acute) will
1322 print correctly to a terminal in a UTF-8 environment.
1323 * minor incompatible change: BASE-CHAR no longer names a class;
1324 however, CHARACTER continues to do so, as required by ANSI.
1325 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1326 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1327 has been moved to the SB-EXT package (temporarily re-exported from
1329 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1330 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1332 * fixed bug #351: better error-handlind and reporting for malformed
1334 * fixed bug #350: bignum-printing is now more memory-efficient,
1335 allowing printing of very large bignums, eg. (expt 2 10000000).
1336 (reported by Bruno Haible)
1337 * fixed bug #302: better primitive-type selection for intersection
1339 * fixed bug #308: non-graphic characters now all have names, as
1340 required. (reported by Bruno Haible)
1341 * bug fix: redefining a class with different superclasses now correctly
1342 removes it from the direct-subclasses of its previous superclasses.
1343 (reported by David Morse)
1344 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1345 new value now works. (reported by Bruno Haible)
1346 * bug fix: correct canonicalization of multiple non-standard slot
1347 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1348 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1349 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1350 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1351 now exists, an signals an error.
1352 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1353 during macroexpansion for non-iteration variables as well. (reported
1354 by Bruno Haible for CMUCL)
1355 * bug fix: Cyclic structures and unprintable objects in compiler
1356 messages no longer cause errors. (reported by Bruno Haible)
1357 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1358 and READ-FROM-STRING all now return a primary value of NIL if
1359 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1360 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1361 (reported by Bruno Haible for CMUCL)
1362 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1363 do not designate a condition. (reported by Bruno Haible for
1365 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1366 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1367 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1368 permitting resolution in favour of any of the conflicting symbols.
1369 (reported by Bruno Haible for CMUCL)
1370 * bug fix: EQUAL compiler optimizations is less aggressive on
1371 strings which can potentially compare true despite having distinct
1372 specialized array element types.
1373 * bug fix: unit enumerations can be defined without dividing by
1374 zero. (thanks to Vincent Arkesteijn)
1375 * FORMAT compile-time argument count checking has been enhanced.
1376 (report from Bruno Haible for CMUCL)
1377 * a partial workaround for the bug 262: the compiler does not try to
1378 inline-expand a local function doing RETURN-FROM from a deleted
1379 BLOCK. (thanks to Peter Denno for the bug report and to David
1380 Wragg for the simple test case)
1381 * fixed some bugs revealed by Paul Dietz' test suite:
1382 ** RENAME-PACKAGE allows all package designators as new package
1384 ** constraint propagation and lambda variable substitution are
1385 more cautious in dealing with partially deleted code.
1386 ** compiler sometimes lost reoptimization passes.
1387 ** CERROR, given a condition as condition designator, passes its
1388 remaining arguments to the continue format control without
1390 ** Case-altering FORMAT directives work correctly on non-ASCII
1392 ** The REAL type specifier handles bounds outside the floating
1393 point ranges without signalling FLOATING-POINT-OVERFLOW.
1394 ** Functions with IR1-transformations can create intercomponent
1395 references to global functions.
1396 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1398 ** FORMAT ~R treats a nil value for its first parameter correctly.
1400 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1401 * enhancement: saving cores with foreign code loaded is now
1402 supported on x86/NetBSD and sparc/Linux in addition to the previously
1403 supported platforms.
1404 * bug fix: on some platforms repeated installations caused multiple
1405 copies of HTML documentation to be installed -- should not happen
1406 any more. (reported by Stefan Scholl)
1407 * bug fix: parsing self-recursive alien record types multiple times
1408 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1409 original patch by Helmut Eller for CMUCL)
1410 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1411 (thanks to Richard Kreuter)
1412 * bug fix: defining classes whose accessors are methods on existing
1413 generic functions in other (locked) packages no longer signals
1414 bogus package lock violations. (reported by François-René Rideau)
1415 * bug fix: special variables as DEFMETHOD parameters no longer have
1416 associated bogus type declarations. (reported by David Wragg and
1418 * bug fix: read-write consistency on streams of element-type
1419 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1420 * bug fix: redefiniton of the only method of a generic function with
1421 no DEFGENERIC no longer emits a full WARNING. In addition,
1422 redefinition of generic functions with no DEFGENERIC to an
1423 incompatible lambda list now signals an error. (thanks to Zach
1425 * bug fix: DEFGENERIC now works even when there's a function of the
1426 same name in an enclosing lexical environment. (thanks to Zach
1428 * fixed compiler failure, caused by instrumenting code during
1429 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1430 * optimization: added loop analysis and improved register allocation
1431 * fixed some bugs revealed by Paul Dietz' test suite:
1432 ** POSITION on displaced vectors with non-zero displacement
1433 returns the right answer.
1434 ** (SIMPLE-STRING) is a valid type specifier for sequence
1436 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1438 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1439 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1441 ** The justification version of the FORMAT ~< directive treats
1442 non-zero minpad parameter correctly.
1444 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1445 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1446 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1447 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1448 the supported interface.
1449 * new feature: Single-stepping of code compiled with DEBUG 2 or
1450 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1451 * new feature: saving cores with foreign code loaded is now
1452 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1453 Timothy Moore's work for CMUCL)
1454 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1455 parameters to * instead of NIL if no initform is supplied.
1456 (reported by Johan Bockgaard)
1457 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1458 correctly when FUNCALL appears as the car of the form. Note:
1459 despite this FUNCALL forms are not currently subject to
1460 compiler-macro expansion. (port of Raymond Toy's fix for the
1461 same from CMUCL, reported by Johan Bockgaard)
1462 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1463 (thanks for Teemu Kalvas)
1464 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1465 case instead of terminating the iteration (thanks for Julian
1466 Squires, Sean Champ and Raymond Toy)
1467 * bug fix: incorrect expansion of defgeneric that caused a style
1468 warning. (thanks for Zach Beane)
1469 * bug fix: slot accessor effective method computation works properly
1470 for classes with multiple non-standard applicable methods on
1471 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1472 * on x86 compiler supports stack allocation of results of LIST and
1473 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1474 CMUCL implementation by Gerd Moellmann)
1475 * fixed some bugs revealed by Paul Dietz' test suite:
1476 ** FORMAT strings with both the ~<~:;~> form of the justification
1477 directive and pretty-printing directives cause an error.
1479 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1480 * incompatible change: the internal functions
1481 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1482 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1483 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1484 instead of the old functions.
1485 * new feature: on platforms where "dladdr" is available foreign
1486 function names now appear in backtraces. (based on Helmut Eller's
1488 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1489 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1491 * documentation: ASDF manual is now distributed with SBCL.
1492 * bug fix: SBCL can now load its contributed modules with REQUIRE
1493 even if the system-provided entries have been removed from
1494 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1496 * bug fix: backtraces involving undefined functions or assembly
1497 routines are more informative. (thanks to Brian Downing)
1498 * bug fix: mutually referent alien structures now work correctly.
1499 (reported by Rick Taube)
1500 * bug fix: structures defined by WITH-ALIEN can be referred to
1501 within other definitions in the same WITH-ALIEN.
1502 * bug fix: division operators (MOD, TRUNCATE and the like) with
1503 constant zero divisors and integer dividends no longer generate
1505 * bug fix: provide default methods for INPUT-STREAM-P and
1506 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1507 * bug fix: improve the detection and resolution of MOP metacycles
1508 (where effective method computation depends on the generic function
1509 having its effective method computed). (reported by Bruno Haible)
1510 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1511 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1512 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1513 * bug fix: pathnames with relative directory components can be
1514 represented relative to default pathnames.
1515 * optimization: in taking the GCD of bignums, reduce the two bignums
1516 to approximately the same size (using Euclid's algorithm) before
1517 applying the more sophisticated binary GCD. (thanks to Juho
1519 * optimization: COUNT on bitvectors now operates word-at-a-time.
1520 * optimization: ASH with a positive, but not necessarily constant,
1521 (leftwards) shift, when in a modular context, is compiled to a
1523 * fixed some bugs revealed by Paul Dietz' test suite:
1524 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1525 if the corresponding argument is NIL.
1526 ** FORMAT directives accepting a minpad parameter treat negative
1528 ** literal commas as character parameters to FORMAT directives are
1530 ** literal spaces directly after ~<Newline> directives within a
1531 format-logical-block (~:< ~@:>) do not induce :FILL-style
1532 conditional newlines.
1533 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1534 as specified: it no longer includes conditional newlines).
1535 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1537 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1538 :PER-LINE-PREFIX argument does not evaluate to a string.
1540 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1541 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1542 the manual for details; for now, package locks can be disabled by
1543 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1544 if no major problems are found then it is likely that they will be
1545 compiled in unconditionally.
1546 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1547 unsupported operators on all platforms. To load a shared library
1548 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1549 object file, link it into a shared library outside of SBCL and
1550 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1552 * bug workaround: ROOM T and the GC were not working together
1553 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1554 reporting facility aren't preserved. That reporting has been
1555 disabled, so now until and unless someone figures out how to make it
1556 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1557 * minor incompatible change: as threatened around sbcl-0.8.0, the
1558 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1559 The symbols are also exported from SB-PCL for backwards
1560 compatibility, but more so than before SB-PCL should be treated as
1561 an implementation-internal package.
1562 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1564 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1565 It is known as of this release not to work on the Alpha, however.
1566 * fixed bug #167: errors signalled due to illegal syntax in method
1567 bodies are now more legible.
1568 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1569 designators and can hence be used with TYPEP.
1570 * fixed bug #333: CHECK-TYPE now ensures that the type error
1571 signalled, if any, has the right object to be accessed by
1572 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1573 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1574 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1576 * fixed bug #334: programmatic addition of slots using specialized
1577 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1578 and :ALLOCATION :CLASS slots.
1579 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1580 float exponents. (rereported by Peter Seibel)
1581 * fixed a bug: #\Space (and other whitespace characters) are no
1582 longer considered to be macro characters in standard syntax by
1583 GET-MACRO-CHARACTER.
1584 * fixed bug: initialization of condition class metaobjects no longer
1585 causes an instance of the condition to be created. (reported by
1587 * fixed bug: it is now possible to have slots such that
1588 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1589 description is neither :INSTANCE nor :CLASS.
1590 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1591 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1592 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1593 non-standard SLOT-DEFINITION-ALLOCATION values.
1594 * fixed bugs: various race conditions handling exiting threads.
1595 CL-PPCRE's thread torture test now passes.
1596 * fixed arguably-a-bug: GC time proportional to number of threads in
1597 system even when most of them are idle
1598 * optimization: improved performance of BIT and SBIT on bit-vectors.
1599 * .fasl file incompatibility: The fasl file version number has
1600 been incremented because of changes associated with package locks.
1602 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1603 * minor incompatible change: the system no longer provides
1604 optimization hints (conditions which are TYPEP
1605 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1606 mode; these hints are still emitted when higher SPEED optimization
1608 * new contrib module: a sampling profiler (profiling by statistical
1609 sampling, rather than by instrumenting functions) is available as
1610 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1611 * the behaviour of the standard function ED is now customizeable by
1612 third parties through a hook variable: see ED's documentation
1613 string for information on the protocol.
1614 * the compiler no longer emits efficiency notes for (FUNCALL X)
1615 when the type of X is uncertain under default optimization
1617 * fixed bug 276: mutating a binding of a specialized parameter to a
1618 method to something that is not TYPEP the specializer is now
1620 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1621 exhibit the required behaviour on the x86 platform. (thanks to
1622 Peter van Eynde, Eric Marsden and Bruno Haible)
1623 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1624 even for difficult arguments. (reported by Peter Graves)
1625 * fixed bug 141a: the backquote printer now descends quoted
1627 * fixed another bug in backquote printing: no more destructive
1628 modification of the form's list structure. (reported by Brian
1630 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1631 move between its address being taken and the call to
1632 interrupt_thread, fixing a crashing race condition.
1633 * the SB-POSIX contrib implementation has been adjusted so that it
1634 no longer exhibits ridiculously poor performance when constructing
1635 instances corresponding to C structs.
1637 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1638 * minor incompatible change: the sb-grovel contrib now treats C
1639 structures as alien (in the sense of SB-ALIEN) objects rather than
1640 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1641 has implications for memory management of client code
1642 (sb-grovel-returned objects must now be manually managed) and for
1643 type safety (alien objects now have full types).
1644 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1645 used to control emission of compiler diagnostics, rather than the
1646 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1647 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1648 quality should be considered deprecated.
1649 * install.sh now installs the user manual as well
1650 * (not quite a new documentable feature, but worth considering in
1651 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1652 beginnings of a semantically meaningful condition hierarchy is
1653 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1655 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1656 designator as the defaults argument.
1657 * fixed bug: Displaced arrays whose displaced-to array has become
1658 too small now cause ARRAY-DIMENSION to signal an error, providing
1659 for safer bounds-checking. (reported by Bruno Haible)
1660 * fixed bug: DEFCLASS slot definitions with identical :READER and
1661 :WRITER names now signal a reasonable error. (reported by Thomas
1663 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1665 * fixed bug: Invalid slot specification errors now print correctly.
1666 (thanks to Zach Beane)
1667 * fixed bug 320: Shared to local slot value transfers in class
1668 redefinitions now happen corrently from superclasses as
1669 well. (reported by Bruno Haible)
1670 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1672 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1673 improper lists correctly. (reported by Bruno Haible)
1674 * fixed bug 313: source-transform for <fun-name> was erroneously
1675 applied to a call of a value of a variable with name <fun-name>.
1676 (reported by Antonio Menezes Leitao)
1677 * fixed bug 307: The obsolete instance protocol ensures that
1678 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1679 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1680 remove dead unknown-values globs from the middle of the stack.
1681 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1682 easier to resume long computations after using *BREAK-ON-SIGNALS*
1683 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1684 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1685 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1686 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1687 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1688 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1690 * fixed a (fairly theoretical) bug in string printing: if
1691 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1692 does not have array-element-type equal to the most general string
1694 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1695 function name. (thanks to Nikodemus Siivola)
1696 * fixed bug: compile-time format string checker failed on
1697 non-closed ~{. (reported by Thomas F Burdick)
1698 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1699 don't warn on legal loop code involving more than one aggregate
1700 boolean. (thanks to Nikodemus Siivola)
1701 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1702 in keyword position to MAKE-PACKAGE was not being reported as
1704 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1705 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1707 * fixed bugs 280 and 312: the checking for multiple definitions in a
1708 file is less likely to become confused by uses of inline
1710 * fixed bug: the #S reader macro performs the keyword coercion
1711 specified for slot names. (reported by Kalle Niemitalo)
1712 * fixed bug: lambda lists may contain symbols whose names start with
1713 & but are not lambda-list-keywords; their occurrence triggers a
1715 * fixed bug 321: define-method-combination argument lambda lists do
1716 not cause invalid code to be generated when &optional or &aux
1717 variables have default values. (reported by Bruno Haible)
1718 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1719 have CLOS classes; this appears also to have fixed reported
1720 instability in stack exhaustion detection.
1721 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1722 MUFFLE-WARNING when no associated restart is present is now
1724 * optimization: rearranged the expansion of various defining macros
1725 so that each expands into only one top-level form in a
1726 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1728 * optimization: used a previously little-used slot in symbols to
1729 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1731 * fixed some bugs revealed by Paul Dietz' test suite:
1732 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1734 ** Fixed an optimization bug related to inheritance of initforms
1735 from local to shared slots.
1736 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1737 ** CAST optimizer forgot to flush argument derived type.
1738 ** print/read consistency on floats is now orders of magnitude
1739 more likely. (thanks also to Bruno Haible for a similar report
1741 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1742 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1743 for objects of type REAL. Make it so.
1744 ** SXHASH is specified (infelicitously) to respect similarity,
1745 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1746 it so. (thanks to Markus Ziegler)
1747 ** on the Alpha, the compiler succeeds in compiling functions
1748 returning a known number of arguments greater than 63.
1749 ** fixed handling of invalid NIL arguments in keyword position
1751 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1753 ** provided a readably-printable representation for RANDOM-STATE
1755 ** ensured that pathnames, where they have a namestring, always
1756 print using #P"..." syntax.
1758 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1759 * Support for the forthcoming 2.0 version of the NetBSD kernel
1760 running on x86 hardware has been added. (thanks to Perry
1761 E. Metzger most immediately, and others for their past work)
1762 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1763 current release version; SBCL's OpenBSD support had been broken
1764 since about the time of OpenBSD's switch to ELF binary format.)
1765 * [placeholder for DX summary]
1766 ** user code with &REST lists declared dynamic-extent, under high
1767 speed or space and low safety and debug optimization policy.
1768 * The manual has been converted to Texinfo format and the debugger
1769 chapter from the cmucl manual has been added.
1770 * A facility has been added to extract documentation strings from
1771 sbcl and store them as Texinfo-formatted snippets for inclusion in
1772 the manual (via Texinfo's @include directive)
1773 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1774 the test case to Dave Roberts)
1775 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1776 pointers. (reported by Sean Ross)
1777 * bug fix: PROFILE output is printed nicely even for large numerical
1778 values. (thanks to Zach Beane)
1779 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1780 greater than 32 handle EOF correctly.
1781 * bug fix: on X86 an immediate argument of the IMUL instruction is
1782 correctly printed in disassembly. (thanks to Lutz Euler)
1783 * bug fix: class slots in redefined classes preserve their old
1784 values. (thanks to Bruno Haible and Nikodemus Siivola)
1785 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1786 succeeds. (reported by Marco Baringer)
1787 * fixed some bugs revealed by Paul Dietz' test suite:
1788 ** READ-SEQUENCE now works on ECHO-STREAMs.
1789 ** RATIONALIZE works more according to its specification. (thanks
1792 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1793 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1794 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1795 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1796 should matter to you only if you rebind the printer control
1797 variables and then find you want different bindings in the
1798 debugger than in the ordinary execution of your program.)
1799 * The runtime build system has been tweaked to support building
1800 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1801 assembler and linker. (thanks to Nikodemus Siivola)
1802 * Unbound, undefined, undeclared variables now trigger full
1803 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1804 more often programmer error than deliberate exploitation of undefined
1806 * optimization: the hash algorithm for strings has changed to one
1807 that is less vulnerable to spurious collisions. (thanks to Juho
1809 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1810 needless bounds checking. (thanks to Juho Snellman)
1811 * optimization: implemented multiplication as a modular
1812 (UNSIGNED-BYTE 32) operation on the PPC backend.
1813 * fixed some bugs revealed by Paul Dietz' test suite:
1814 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1816 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1817 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1818 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1820 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1822 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1824 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1825 their output stream on EOF from read.
1826 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1827 have been read to end-of-file.
1828 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1830 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1831 description of determination of which consecutive characters
1833 ** Printing the "Space" character with escaping on now yields "#\\ ",
1834 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1835 ** Reading floating-point numbers with *READ-BASE* set to a number
1836 less than 10 works correctly.
1837 ** Reading floating-point numbers with *READ-BASE* set to a number
1838 more than 10 works correctly.
1839 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1840 the readtable currently in effect.
1842 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1843 * minor incompatible change: parsing of namestrings on a physical
1844 (Unix) host has changed; numbers after the final #\. in a
1845 namestring are no longer interpreted as a version field. This is
1846 intented to be largely invisible to the user, except that the
1847 meaning of the namestring "*.*.*" has changed: it now refers to a
1848 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1849 should usually be replaced by
1850 (make-pathname :name :wild :type :wild :version :wild)
1851 with the added benefit that this is more likely to be portable.
1852 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1853 option to OPEN now signals an error if the file being opened
1854 exists; this may have an impact on existing code.
1855 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1856 signals received, on the PowerPC platforms (both Linux and
1857 Darwin). (thanks to Pierre Mai for pointing out the location of
1859 * several fixes on OS X: The system now builds and runs cleanly on
1860 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1861 (thanks to Brian Mastenbrook)
1862 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1863 second-resolution: integer multiples of 1/3600 between -24 and 24.
1864 (thanks to Vincent Arkesteijn)
1865 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1866 type when called with 1 argument; PEEK-CHAR checked type of
1867 PEEK-TYPE only after having read first character from a
1868 stream. (reported by Peter Graves)
1869 * bug fix: the garbage collector now has much better locality
1870 behaviour, and in particular no longer treats all memory as being
1871 exhausted when many small objects point to each other in a deeply
1873 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1874 recognized as being TYPEP their class.
1875 * bug fix: the PUSHNEW documentation string has been corrected.
1876 (thanks to Vincent Arkesteijn)
1877 * bug fix: defaulting of the value for the last of an atypically
1878 large number of multiple values being bound was not being
1879 performed correctly on the Alpha or PPC platforms
1880 * optimization: implemented multiplication as a modular
1881 (UNSIGNED-BYTE 32) operation on the x86 backend.
1882 * optimization: SEARCH on simple-base-strings can now be open-coded.
1883 (see also contrib/compiler-extras.lisp for inspiration for
1884 teaching the compiler about the Boyer-Moore algorithm).
1885 * value, returned by MAX (and MIN) called with several EQUALP, but
1886 not EQL, arguments now does not depend on compiler settings.
1887 * fixed some bugs revealed by Paul Dietz' test suite:
1888 ** in stack analysis liveness information is propagated from
1889 non-local entry points.
1890 ** pathwise CAST removing failed when the CAST node did not start
1892 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1893 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1895 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1896 host is already defined.
1897 ** RENAME-FILE works on streams instead of signalling an internal
1899 ** PEEK-CHAR uses the current readtable when determining whether
1900 or not a character is whitespace.
1901 ** MERGE-PATHNAMES handles the case when the pathname does not
1902 specify a name while the default-pathname specifies a version.
1903 ** Pathnames now stand a better chance of respecting print/read
1905 ** Attempting to use standardized file system operators with a
1906 pathname with invalid :DIRECTORY components signals a
1908 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1910 ** DIRECTORY on logical pathnames is more correct.
1911 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1912 signal a TYPE-ERROR if their argument is not a stream.
1913 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1914 designator argument does not designate a stream.
1915 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1916 examining the synonym.
1917 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1919 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1920 element-type larger than ([UN]SIGNED-BYTE 32).
1922 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1923 * When built with the :SB-FUTEX feature, threaded builds now take
1924 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1925 for faster/more reliable mutex and condition variable support.
1926 * Incompatible change (but one you probably shouldn't have been using
1927 anyway): the interface and code for arbitrating between multiple
1928 threads in the same user session has been redesigned.
1929 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1930 error when called without an explicit environment argument.
1931 (thanks to Nikodemus Siivola)
1932 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1933 confused about their position. (thanks to Adam Warner and Gerd
1935 * bug fix: Pretty printing backquoted forms with unquotations in the
1936 argument list position of various code constructs such as LAMBDA
1937 now works correctly. (reported by Paul Dietz)
1938 * bug fix: Pretty printing unquotations no longer loses all
1939 stream position information.
1940 * optimization: performance of string output streams is now less
1941 poor for multiple small sequence writes.
1942 * optimization: performance of CSUBTYPEP in the presence of complex
1943 expressions involving CONS and NOT many times has been improved.
1944 (reported by Paul Dietz)
1945 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1947 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1948 streams for the REPL, for the debugger, and so on. (thanks to
1950 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1951 * fixed some bugs revealed by Paul Dietz' test suite:
1952 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1953 is ignored if it is too small, rather than propagating through
1954 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1955 ** extremely complex negations of CONS types were not being
1956 sufficiently canonicalized, leading to inconsistencies in
1958 ** VALUES tranformer lost derived type.
1960 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1961 * fixed a bootstrapping bug: the build process no longer assumes
1962 that the various BOOLE-related constants have the same value in
1963 host and target lisps. (noted by Paul Dietz' test suite on an
1964 SBCL binary built from CLISP)
1965 * The system can now be dynamically linked on the MIPS platform,
1966 which enables dynamic loading of foreign code from Lisp. (thanks
1967 to Ralf Baechle for discussions on the MIPS ABI)
1968 * The system now records debugging information for its own source
1969 files in a filesystem-position-independent manner, relative to
1970 the "SYS" logical host.
1971 * fixed a compiler bug: MV-LET convertion did not check references
1972 to the "max args" entry point. (reported by Brian Downing)
1973 * tweaked disassembly notes to be less confident about proclaiming
1974 some instruction as an LRA. (thanks to Brian Downing)
1975 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1976 now each have their own history, command character, and other
1977 characteristics. (thanks to David Lichteblau)
1978 * fixed some bugs revealed by Paul Dietz' test suite:
1979 ** compiler failure in compiling LOGAND expressions including a
1981 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1982 shift greater than 32.
1983 ** FLUSH-DEST did not mark blocks for type check regeneration.
1984 ** HANDLER-CASE failed to accept declarations in handler clauses
1985 in some circumstances.
1987 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1988 * New code in contrib/sb-introspect (still probably not entirely
1989 stable yet) provides some support for smart Lisp development
1990 environments like SLIME.
1991 * The conditions signalled for errors occurring when loading .fasl
1992 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1993 in a way which should help ASDF recover gracefully.
1994 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1995 stuff has been cleaned up. If you code contrib/ stuff, this might
1996 affect you, and you can look at contrib/README, contrib/STANDARDS,
1997 and/or the 0.8.4.27 diff to check.
1998 * In full calls the compiler now does not generate checks for declared
1999 argument types for all arguments.
2000 * various threading fixes
2001 ** and some experimental patches which didn't make it into
2002 the main tree for this release, but which are shipped in
2003 contrib/experimental-thread.patch as a possible fix for some
2004 failures (deadlock, spinning...) in GC-intensive multithreaded
2006 * fixed PPC build problem (source code incompatibility of different
2007 library versions): added offsetof() hackery which attempts to divine
2008 where glibc maintainers put uc_mcontext today
2009 * fixed bug 282: compiler does not trust type assertions while passing
2010 arguments to a full call.
2011 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2012 &OPTIONAL VALUES type parameter.
2013 * fix bug 214: algorithm for noting rejected templates is now more
2014 similar to that of template seletion. (also reported by rydis on
2016 * fixed bug 141b: printing backquoted information readably and prettily
2017 inserts a space where necessary.
2018 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2019 (CHARACTER 10) are now reported as errors, rather than propagated
2020 as unknown types. (reported by piso on #lisp)
2021 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2022 with values NIL and :ERROR. (thanks to Milan Zamazal)
2023 * fixed bug 191c: CLOS now does proper keyword argument checking as
2024 described in CLHS 7.6.5 and 7.6.5.1.
2025 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2026 longer raise an error; further, using a list as a for-as-arithmetic
2027 counter now raises a meaningful error.
2028 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2029 now understood by sequence creation functions such as MAKE-SEQUENCE
2031 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2032 a STRING-INPUT-STREAM.
2033 * compiler enhancement: SIGNUM is now better able to derive the type
2035 * type declarations inside WITH-SLOTS are checked. (reported by
2037 * fixed some bugs revealed by Paul Dietz' test suite:
2038 ** incorrect optimization of TRUNCATE for a positive first
2039 argument and negative second.
2040 ** compiler failure in let-convertion during flushing dead code.
2041 ** compiler failure while deriving type of TRUNCATE on an
2042 interval, containing 0.
2043 ** ASH of a negative bignum by a negative bignum count now returns
2045 ** intersection of CONS types now canonicalizes properly, fixing
2046 inconsistencies in SUBTYPEP.
2048 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2049 * incompatible change: The --disable-debugger command line
2050 option now clobbers the debugger at a more fundamental
2051 level, by redefining #'INVOKE-DEBUGGER instead of by
2052 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2053 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2054 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2055 enter the debugger REPL and then suffer recursive errors
2056 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2057 while under the new system, BREAK in --disable-debugger mode
2058 terminates the system just as an unhandled error would.
2059 * fixed compiler performance when processing loops with a step >1;
2060 * bug fix: DOCUMENTATION now retrieves generic function
2061 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2062 support has been systematized, and now supports the methods
2063 specified by ANSI, along with a default method and a method for
2064 slot documentation. (reported by Nathan Froyd)
2065 * bug fix: effective methods associated with a generic function are
2066 no longer cached over a change of that generic function's method
2067 combination. (reported by Andreas Fuchs)
2068 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2069 names a non-existent directory. (thanks to Andreas Fuchs)
2070 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2071 the PPC platform, lead to stack corruption; this has been fixed.
2072 (reported by Rainer Joswig)
2073 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2074 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2075 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2076 arithmetic in general, is now much more reliable on the PPC
2078 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2079 platform now returns the right answer.
2080 * optimization: restored some effective method precomputation in
2081 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2082 precomputation is now tunable.
2083 * optimization: compiler-internal data structure use has been
2084 reviewed, and changes have been made that should improve the
2085 performance of the compiler by about 20%.
2086 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2087 simple-base-strings and simple-bit-vectors is improved.
2088 * optimization: the optimization of 32-bit logical and arithmetic
2089 functions introduced in version 0.8.3 on the x86 has been
2090 implemented on the mips, ppc and sparc platforms; an
2091 implementation of the same facility, but for 64-bit arithmetic,
2092 has been added for the alpha.
2093 * microoptimization: the compiler is better able to make use of the
2094 x86 LEA instruction for multiplication by constants.
2095 * bug fix: in some situations compiler did not report usage of
2096 generic arithmetic in (SPEED 3) policy.
2097 * bug 145b fix: compiler used wrong type specifier while converting
2098 MEMBER-types to numeric.
2099 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2101 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2102 index argument now works properly on the Alpha platform.
2103 * bug fix: floating point exception treatment on the Alpha platform
2105 * bug fix: FILE-POSITION works much better on string input and
2106 output streams. (thanks to Nikodemus Siivola)
2107 * bug fix: many threading/garbage collection symptoms sorted.
2108 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2109 might be pseudo-atomic.
2110 * internal change: Stopping for GC is now done with signals not
2111 ptrace. GC is now done in whichever thread wanted it, instead of
2113 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2115 * bug fix: result form in DO is not contained in the implicit
2117 * incompatible change: ICR structure is changed; the value part of
2118 CONTINUATION is now called LVAR; corresponding functions are
2119 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2120 * added type deriver for ISQRT (thanks to Robert E. Brown).
2121 * bug fix: better support for loading from the command line when an
2122 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2124 * fixed some bugs revealed by Paul Dietz' test suite:
2125 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2126 ** ROUND and FROUND now give the right answer when given very
2127 small float arguments.
2128 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2130 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2131 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2132 ** LCM should return a non-negative integer.
2133 ** PARSE-INTEGER returned the index of a terminator instead of the
2134 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2135 ** PARSE-INTEGER returned an incorrect index being applied to a
2137 ** LCM with two arguments of 0 returns 0 rather than signalling
2139 ** unsigned addition of a 32-bit constant with the high bit set no
2140 longer causes an internal compiler error on the x86.
2141 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2142 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2143 with negative last argument.
2144 ** byte specifiers with zero size and position no longer cause
2145 an error during type derivation.
2146 ** bignum multiplication on the Alpha platform now returns the
2148 * porting: The system now builds on SuSE AMD64, although it still
2149 generates a 32-bit binary.
2150 * .fasl file incompatibility: The fasl file version number has
2151 been incremented (because of the changes to internal compiler
2152 data structures referred to above).
2154 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2155 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2156 more accurately, on the Darwin kernel running on PowerPC hardware.
2157 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2158 * Compiler code deletion notes now signal a condition of type
2159 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2160 an associated MUFFLE-WARNING restart.
2161 * The compiler now performs limited argument count validation of
2162 constant format strings in FORMAT, and where appropriate in ERROR,
2163 CERROR and WARN. (thanks to Gerd Moellmann)
2164 * New ASDF-INSTALL contrib can be used for automatic download and
2165 installation of third-party Lisp code from CCLAN or other sites
2167 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2168 which forces another thread to execute a function supplied by the
2170 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2171 now accept and act upon their :ELEMENT-TYPE keyword argument.
2172 (reported by Martin Atzmueller, Edi Weitz)
2173 * bug fix: FILE-POSITION now accepts position designators up to
2174 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2175 is the greater. (thanks to Patrik Nordebo)
2176 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2177 Kalle Olavi Niemitalo)
2178 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2179 printable. (reported by Eric Marsden)
2180 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2181 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2182 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2183 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2184 (thanks to Stig Sandoe)
2185 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2186 UNREAD-CHAR now correctly includes the unread character in the
2187 target sequence. (thanks to Gerd Moellmann)
2188 * bug fix in threaded builds: the system can now be suspended and
2189 resumed by shell job control with minimal disruption.
2190 * bug fixes in times and timezones >2038AD
2191 * better handling of "where is GNU make?" problem in build scripts
2192 (thanks to Nikodemus Siivola)
2193 * new optimization: inside a named function any reference to a
2194 function with the same name is considered to be a self-reference;
2195 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2196 optimization quality.
2197 * new optimization on x86: logical functions and + now have
2198 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2199 used when the result is truncated to 32 bits.
2200 * VALUES declaration is partially enabled.
2201 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2202 * fixed some bugs revealed by Paul Dietz' test suite:
2203 ** The system now obeys the constraint imposed by
2204 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2205 types form a lattice under type intersection.
2206 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2207 ** ASSOC now ignores NIL elements in an alist.
2208 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2209 and (1+ MOST-POSITIVE-FIXNUM) answers.
2210 ** The addition of a method with invalid qualifiers to a generic
2211 function does not cause an error to be signalled immediately;
2212 a warning is signalled, and the error is generated only on
2213 calling the generic function.
2214 * changed .fasl file version number, in part to add type codes for
2215 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2216 obscure ANSI requirements
2218 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2219 * fixed bug 148: failure to inline-expand a local function left
2220 garbage, confusing the compiler.
2221 * fixed bugs 3cd: structure slot readers perform type check if the
2222 slot can have an invalid value (i.e. it is either not initialized
2223 or can be written with a less specific slot writer).
2224 * bug fix: the compiler now traps array references to elements off
2225 the end of an array; previously, the bounds checking in some
2226 circumstances could go off-by-one.
2227 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2229 * type declarations for array element types now obey the description
2230 on the CLHS page "Declaration TYPE", as per discussions on
2231 sbcl-help around 2003-05-08. This means that a declaration
2232 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2233 declaration, all references to BAR will be asserted or assumed
2234 (with THE, so dependent on compiler policy) to involve objects of
2235 type FOO. Note that no such declaration is implied in
2236 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2237 * declared types of functions from the "Conditions"
2238 chapter. (reported by Paul Dietz)
2239 * bug fix: CERROR accepts a function as its first argument.
2240 * bug fix: NTH an NTHCDR accept a bignum as index
2241 arguments. (reported by Adam Warner)
2242 * optimization: character compare routines now optimize comparing
2243 against a constant character. (reported by Gilbert Baumann)
2244 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2245 argument now works properly on the MIPS platform.
2246 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2247 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2248 declared to have a functional type, does not cause an error
2250 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2251 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2252 * fixed bug: if last continuation of a deleted block has a
2253 destination, this destination should be deleted too. (reported by
2255 * fixed a bug in the bootstrap process: the host compiler's values
2256 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2257 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2258 test case from Patrik Nordebo)
2259 * improved the ability of the disassembler on the PPC platform to
2260 provide helpful disassembly notes.
2261 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2262 the class in more cases than previously.
2263 * bug fix: FILE-POSITION now understands :START and :END for
2264 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2265 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2266 8) data. (thanks to David Lichteblau)
2267 * bug fix: it is possible to add a method to a generic function
2268 without lambda list.
2269 * bug fix: reader failed to signal END-OF-FILE inside an
2270 object representation. (reported by Nikodemus Siivola)
2271 * fixed some bugs revealed by Paul Dietz' test suite:
2272 ** LAST and [N]BUTLAST should accept a bignum.
2273 ** condition slot accessors are methods.
2274 ** (VECTOR NIL) is a subtype of STRING.
2276 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2277 * minor incompatible change: some nonsensical specialized lambda
2278 lists (used in DEFMETHOD) which were previously ignored now signal
2280 * minor incompatible change: the system is now aware of the types of
2281 variables in the COMMON-LISP package, and will signal errors for
2282 most violations of these type constraints (where previously they
2283 were silently accepted).
2284 * minor incompatible change: COMPILE-FILE now uses the freedom
2285 afforded (ANSI 3.2.2.3) to use derived function types for
2286 functions defined in the same file. This also permits the system
2287 to warn on static type mismatches and function
2288 redefinition. (Currently it does not work with high DEBUG level.)
2289 * minor incompatible change: VALUES declaration is disabled.
2290 * When issuing notes, the compiler now signals a condition of type
2291 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2292 restart for use in user handlers. It is expected that the
2293 COMPILER-NOTE condition will eventually become a condition
2294 supertype to a hierarchy of note types, which will then be
2295 handleable in a similar fashion. However, at the moment, no such
2296 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2297 but it's an implementation detail, not a classification for the
2299 * Changes in type checking closed the following bugs:
2300 ** type checking of unused values (192b, 194d, 203);
2301 ** template selection based on unsafe type assertions (192c, 236);
2302 ** type checking in branches (194bc).
2303 * A short form of VALUES type specifier has ANSI meaning (it has
2304 increased the number of situations when SBCL cannot perform type
2306 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2307 keywords or constants is permissible.
2308 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2309 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2310 classes. (thanks to Antonio Martinez)
2311 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2312 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2313 argument to a pretty-print stream. Instead, it leaves any such
2314 operations to DESCRIBE-OBJECT methods.
2315 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2317 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2318 lambda lists. (thanks to David Lichteblau)
2319 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2320 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2321 (thanks to Gerd Moellmann)
2322 * fixed bug 246: increased compilation speed of long
2323 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2325 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2327 * DEFCONSTANT now throws a condition of type
2328 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2329 constant to a non-EQL value; CONTINUE and ABORT restarts
2330 respectively change and preserve the value.
2331 * fixed bug 63: The code walker, part of the implementation of CLOS,
2332 is now better at handling symbol macros.
2333 * bug fix: There is no longer an internal implementation type named
2334 CL:LENGTH. (reported by Raymond Toy)
2335 * bug fix: In macro-like defining macros/special operators the
2336 implicit block does not enclose the lambda list.
2337 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2338 enclosed in parentheses) are not suitable as type specifiers, and
2339 their use properly signals an error now.
2340 * bug fix: An argument count mismatch for a type specifier in code
2341 being compiled no longer causes an unhandled error at compile
2342 time, but signals a compile-time warning.
2343 * fixed simple vector readable printing
2344 * bug fix: DESCRIBE takes more care over whether the class
2345 precedence list slot of a class is bound before accessing it.
2346 (reported by Markus Krummenacker)
2347 * bug fix: FORMATTER can successfully compile pretty-printer format
2348 strings which use variants of the ~* directive inside.
2349 * bug fix: SEARCH now applies its TEST predicate to the elements of
2350 the arguments in the correct order. (thanks to Wolfhard Buss)
2351 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2352 in type inference. (thanks to Robert E. Brown)
2353 * bug fix: Reading in symbols with an explicit package name of ""
2354 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2355 * fixed some bugs revealed by Paul Dietz' test suite:
2356 ** NIL is now allowed as a structure slot name.
2357 ** Arbitrary numbers, not just REALs, are allowed in certain
2358 circumstances in LOOP for-as-arithmetic clauses.
2359 ** Multiple class redefinitions before slot access no longer
2360 causes a type error.
2361 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2362 association between the name and a class.
2363 ** Generic functions with non-standard method-combination and over
2364 five methods all of which return constants no longer return NIL
2365 after the first few invocations. (thanks to Gerd Moellmann)
2366 ** CALL-NEXT-METHOD with no arguments now passes the original
2367 values of the arguments, even in the presence of assignment.
2368 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2370 ** DISASSEMBLE works with closures and funcallable instances.
2371 ** ADD-METHOD now returns the generic function, not the new method.
2372 ** FIND-METHOD signals an error if the lengths of the specializers
2373 is incompatible with the generic function, even if the ERRORP
2375 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2376 which its argument is a member.
2377 ** DEFCLASS only redefines the class named by its class-name
2378 argument if that name is the proper name of the class;
2379 otherwise, it creates a new class.
2380 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2381 of the UNBOUND-SLOT condition to the name of the slot.
2382 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2383 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2384 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2385 SLOT-MAKUNBOUND in the specified fashion.
2387 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2388 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2389 cross-compilation host. As a consequence, we can now bootstrap our
2390 way up to SBCL starting with a bare gcc toolchain and human-readable
2391 source code (first the source to CLISP, then the source to SBCL).
2392 * A contributed module containing a partial implementation of the
2393 simple-streams interface has been included. (thanks to Rudi
2395 * A contributed module implementing the RFC1321 Message Digest
2396 Algorithm, known as MD5, has been included.
2397 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2398 no longer has any effect, as the code controlled by this feature
2399 has been deleted. (As far as we know, no-one has ever built using
2400 this feature, and its semantics were confused in any case).
2401 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2402 work on conditions (as required by the ANSI specification),
2403 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2404 expected behaviour on conditions. Users should note, however,
2405 that such behaviour is not required by the ANSI specification,
2406 and so use of this behaviour may render their code unportable.
2407 * fixed some bugs revealed by Paul Dietz' test suite:
2408 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2410 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2411 ** SXHASH on condition objects no longer returns NIL.
2412 ** :ALLOCATION :CLASS slots are better treated; their values are
2413 updated on class redefinition, and initforms inherited from
2414 superclasses are applied.
2415 ** REMOVE-METHOD returns its generic function argument even when
2416 no method was removed.
2417 ** SHARED-INITIALIZE now initializes the values of the requested
2418 slots, including those with :ALLOCATION :CLASS.
2419 ** ALLOCATE-INSTANCE now works on structure classes defined via
2420 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2422 ** SLOT-EXISTS-P now works on conditions, as well as structures
2424 ** MAKE-LOAD-FORM now has the required methods on
2425 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2426 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2427 keyword, and now implements the SLOT-NAMES argument.
2428 ** methods with &OPTIONAL arguments no longer allow too many
2429 arguments to be passed in the call without error.
2430 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2431 option is consistent with the required arguments of the generic
2432 function lambda list.
2433 * bug fix: REQUIRE accepts a string designator. (Thanks to
2435 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2436 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2437 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2438 * bug fix: The compiler now checks for duplicated variables in macro
2440 * bug fix: SETQ on globals returns the correct value.
2441 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2442 not a COMPILER-ERROR (followed by some other strange error on
2443 choosing the CONTINUE restart).
2444 * bug fix: make.sh and friends are now more consistent in the way that
2445 they look for GNU "make".
2447 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2448 * experimental native threads support (on x86 Linux >=2.4 only).
2449 This is not compiled in by default: you need to add :SB-THREAD to
2450 the target features. See the "Beyond ANSI" chapter of the manual
2452 * fix for longstanding nonANSIism: The old distinction between
2453 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2454 The return value from CL:FIND-CLASS is now a CLOS class, and
2455 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2456 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2457 * An interface to the MetaObject Protocol, as described in Kiczales,
2458 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2459 MIT Press, 1991, is available from the SB-MOP package.
2460 * incompatible change: the SB-PCL package should now be considered
2461 a private implementation detail, and no longer a semi-private MOP
2463 * minor incompatible change: due to rearrangement for threads, the
2464 control stack and binding stack are now allocated at arbitrary
2465 addresses instead of being hardcoded per-port. Users affected by
2466 this probably have to be doing advanced things with shared
2467 libraries, and will know who they are.
2468 * minor incompatible change: Previously, all --eval forms used were
2469 processed with READ before any of them were processed with EVAL.
2470 Now each --eval form is processed with both READ and EVAL before
2471 the next --eval form is processed. (Thus package operations like
2472 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2473 work as the user might reasonably expect.)
2474 * minor incompatible change: *STANDARD-INPUT* is now only an
2475 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2477 * minor incompatible change: Y-OR-N-P is now character-oriented,
2478 not line oriented. Also, YES-OR-NO-P now works without errors.
2479 (thanks to Antonio Martinez)
2480 * sb-aclrepl module improvements: an integrated inspector, added
2481 repl features, and a bug fix to :trace command.
2482 * Known functions, which cannot be open coded by the backend, are
2483 considered to be able to check types of their arguments. (fixing
2484 a bug report by Nathan J. Froyd)
2485 * fixed a bug in computing method discriminating functions: It is
2486 now possible to define methods specialized on classes which have
2487 forward-referenced superclasses. (thanks to Gerd Moellmann)
2488 * fixed evaluation order in optional entries (reported by Gilbert
2490 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2491 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2492 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2493 required-by-AMOP NAME argument, as well as CLASS and
2494 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2495 * fixed bug 20: DEFMETHOD can define methods using names that are
2496 not the proper names of classes to designate class specializers.
2497 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2498 Unix file descriptors, instead of blowing up. (thanks to Antonio
2500 * Garbage collection refactoring: user-visible change is that a
2501 call to the GC function during WITHOUT-GCING will not do garbage
2502 collection until the end of the WITHOUT-GCING. If you were doing
2503 this you were probably losing anyway.
2504 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2505 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2506 TYPEP the latter but not the former.
2507 * The compiler issues a full WARNING for calls to undefined functions
2508 with names from the CL package.
2509 * MAP-INTO for a vector destination is open coded. (reported by
2510 Brian Downing on c.l.l)
2511 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2512 documentation string.
2513 * fixed some bugs revealed by Paul Dietz' test suite:
2514 ** COPY-ALIST now signals an error if its argument is a dotted
2516 ** Condition slots are now accessed more correctly in the presence
2517 of multiple initargs for a given slot.
2518 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2519 exclude restarts of the same name associated with a different
2521 ** DEFCLASS of forward-referenced classes with another
2522 forward-referenced class in the superclasses list no longer
2524 ** Condition slots are now initialized once each, not multiple
2525 times. (thanks to Gerd Moellmann)
2526 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2528 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2529 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2530 arguments contain duplicated elements.
2531 ** RESTART-CASE understands local macros.
2532 ** RESTART-CASE associates exactly its own restarts with a condition.
2533 ** ENDP in safe mode checks its argument to be of type LIST.
2534 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2535 in question is unbound.
2536 ** Optimized MAKE-INSTANCE functions no longer cause internal
2537 assertion failures in the presence of duplicate initargs.
2538 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2539 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2540 propagated even in the ctor optimized implementation of
2542 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2544 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2545 * a better implementation of SXHASH on (simple) bit vectors,
2546 measured both in execution speed and in distribution of results
2547 over the positive fixnums, has been installed. Likewise, a better
2548 implementation of EQUAL for simple bit vectors is now available.
2549 * fixed CEILING optimization for a divisor of form 2^k.
2550 * fixed bug 240 (emitting extra style warnings "using the lexical
2551 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2552 by Antonio Martinez)
2553 * fixed SXHASH, giving different results for NIL depending on type
2554 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2555 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2556 variable. (found by Rolf Wester)
2557 * SBCL does not ignore type declarations for special
2558 variables. (reported by rif on c.l.l 2003-03-05)
2559 * some bug fixes in contrib/sb-aclrepl/
2560 * fixed some bugs revealed by Paul Dietz' test suite:
2561 ** a bug in the CONS type specifier, whereby the CAR and CDR
2562 types got intertwined, has been fixed;
2563 ** the type system is now able to reason about the interaction
2564 between INTEGER and RATIO types more completely;
2565 ** APPEND, [N]REVERSE and NRECONC check that those their
2566 arguments, which must be proper lists, are really so;
2567 ** An array specialized to be unable to hold elements has been
2568 implemented, as required -- yes, really -- by ANSI;
2569 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2570 on malformed property lists;
2572 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2573 * incompatible packaging change: in line with Unix convention,
2574 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2575 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2576 * REQUIRE and PROVIDE are now optionally capable of doing something
2577 useful. See the documentation string for REQUIRE.
2578 * infrastructure for a managed SBCL contrib system: contributed
2579 modules in this release include:
2580 ** the ASDF system definition facility;
2581 ** an interface to the BSD Sockets API;
2582 ** an ACL-like convenience interface to the repl;
2583 (thanks to Kevin Rosenberg)
2584 ** an implementation of ROTATE-BYTE, with efficient implementation
2586 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2587 gives a closer approximation to the right answer than previously.
2588 (thanks to Raymond Toy)
2589 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2590 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2591 optional environment arguments, as required by ANSI.
2592 * fixed bugs in other functions taking environment objects, allowing
2593 calls with an explicit NIL environment argument to be compiled
2595 * fixed bug 228: primary return values from
2596 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2597 COMPILE or FUNCTION.
2598 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2599 :TYPE will no longer signal errors on innocuous objects.
2600 * fixed bug 231b: SETQ is better at respecting type declarations in
2601 the lexical environment.
2602 * fixed a bug in DEFCLASS: classes named by symbols with no or
2603 unprintable packages can now be defined.
2604 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2605 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2606 * fixed compiler failure related to checking types of functions.
2607 (reported by Robert E. Brown)
2608 * the compiler is now much more consistent in its error-checking
2609 treatment of bounding index arguments to sequence functions: in
2610 (SAFETY 3) code, errors will be signalled in almost all cases if
2611 invalid sequence bounding indices are passed to functions defined
2612 by ANSI to operate on sequences.
2613 * fixed a bug in the build procedure: documentation of SBCL-specific
2614 packages is now preserved and available in the final Lisp image.
2615 * lifted FDEFINITION lookup out of loops in the implementation of
2616 many list operations. (thanks to Robert E. Brown)
2617 * fixed a bug in the reader: the #n# reader macro now works for
2618 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2619 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2620 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2621 E. Brown and Tony Martinez respectively)
2622 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2623 SLOT-BOUNDP: in particular, it is now able to optimize them much
2624 better, and is now not vulnerable to having packages renamed.
2625 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2626 always called when a slot is not present in an instance. (thanks
2628 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2629 longer signal an error on unreading a character following EOF on
2630 the previous constituent stream. (thanks to Tony Martinez)
2631 * fixed some bugs revealed by Paul Dietz' test suite:
2632 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2633 not just nonnegative fixnums;
2634 ** the logical bit-array operators such as BIT-AND now accept an
2635 explicit NIL for their "opt-arg" argument (to indicate a
2636 freshly-consed result bit-array);
2637 ** ELT now signals an error on an invalid sequence index in safe
2639 ** the type system is now cleverer about negations of numeric
2640 types, and consequently understands the BIGNUM and RATIO types
2642 ** the type system is now cleverer about the interaction between
2643 INTEGER and RATIO types: while bugs still remain, many more
2644 cases are accurately computed;
2645 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2646 if it is in the last clause;
2647 ** CONSTANTLY now correctly returns a side-effect-free function in
2649 ** DECLARE is no longer treated as a special-operator; in
2650 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2651 * incremented fasl file version number due to the change in the
2652 DEFSTRUCT-SLOT-DESCRIPTION structure.
2654 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2655 * minor incompatible change: code processed by the "interpreter" or
2656 EVAL now has a compilation optimization policy of (DEBUG 2)
2657 (changed from (DEBUG 1)) to improve debuggability of interactive
2658 development, and to allow the use of the debug RETURN command in
2660 * an experimental implementation of the RETURN command for the
2661 debugger has been included. (thanks to Frederik Kuivinen)
2662 * fixed bug 62: constraints were not propagated into a loop.
2663 * fixed bug in embedded calls of SORT (reported and investigated by
2665 * fixed some bugs revealed by Paul Dietz' test suite:
2666 ** printing and reading of arrays with some dimensions having
2667 length 0 (thanks to Gerd Moellmann);
2668 ** BOA constructor with &AUX argument without a default value does
2669 not cause a type error;
2670 ** CONSTANTP now returns true for all self-evaluating objects.
2672 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2673 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2674 accessors that are related by inheritance, as specified in the
2675 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2676 Valtteri Vuorikoski)
2677 * The compiler is now able to inline functions that were defined in
2678 a complex lexical environment (e.g. inside a MACROLET).
2679 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2681 * Support for the upcoming FreeBSD-5.0 release has been included.
2682 (thanks to Dag-Erling Smorgrav)
2683 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2684 effect when it is not in a toplevel context.
2685 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2686 stand a better chance of being correct. (thanks to Gerd
2688 * fixed bug in COERCE, which now signals an error on coercing a
2689 rational to a bounded real type which excludes the expected
2691 * The compiler is now able to derive types more accurately from the
2692 COERCE and COMPILE functions.
2693 * fixed bug 223: functional binding is considered to be constant
2694 only for symbols in the CL package.
2695 * fixed bug 231: SETQ did not check the type of a variable being set
2696 (reported by Robert E. Brown)
2697 * A new optimization for MAKE-INSTANCE has been included, fixing
2698 various bugs (including relating to :ALLOCATION :CLASS slots and
2699 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2701 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2702 ** As required by ANSI, LOOP now disallows anonymous collection
2703 clauses such as COLLECT I in conjunction with aggregate boolean
2704 clauses such as THEREIS (= I 1);
2705 ** LOOP now signals an error when any variable is reused in the
2706 same loop (including the potentially useful construct analogous
2707 to WITH A = 1 WITH A = (1+ A);
2708 ** IT is only a special loop symbol within the first clause of a
2709 conditional loop clause;
2710 ** LOOP with a typed iteration variable over a hashtable now
2711 signals a type error iff it should.
2712 * fixed some other bugs revealed by Paul Dietz' test suite:
2713 ** FILE-STREAM now names the class previously known as FD-STREAM;
2714 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2715 argument) no longer signals an error;
2716 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2717 of the slot symbol, rather than using the current package
2718 ((:CONC-NAME "") continues to intern the slot's name in the
2720 * incremented fasl file version number, because of the incompatible
2721 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2722 of the new implementation of DEFINE-COMPILER-MACRO.
2724 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2725 * Support for building SBCL for MIPS platforms running in
2726 little-endian mode has now been checked in, and basic
2727 functionality on said platforms verified.
2728 * minor incompatible change: PCL now records the pathname of a file
2729 in which methods and the like are defined, rather than its
2731 * minor incompatible change: TRUENAME now considers the truename of
2732 a file naming a directory to be the pathname with :DIRECTORY
2733 component indicating that directory.
2734 * minor incompatible change: a NAMED clause in the extended form of
2735 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2736 reason for the previous behaviour is unclear.
2737 * more systematization and improvement of CLOS and MOP conformance
2738 in PCL (thanks to Gerd Moellman and Pierre Mai):
2739 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2741 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2742 primary methods with no specializers;
2743 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2745 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2746 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2747 FORWARD-REFERENCED-CLASSes; error reporting on
2748 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2750 ** SXHASH on CLOS instances now uses a slot internal to the
2751 instance to return different numbers on distinct instances,
2752 while preserving the same return value through invocations of
2754 ** DEFMETHOD signals errors when methods with longer incongruent
2755 lambda lists are added to generic functions;
2756 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2757 CLASS, as specified in AMOP;
2758 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2759 on the order returned by the primary method for classes of
2760 class STANDARD-CLASS;
2761 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2762 * fixed some bugs shown by Paul Dietz' test suite:
2763 ** DOLIST puts its body in TAGBODY;
2764 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2766 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2767 value producing form;
2768 ** if more variables are given to PROGV than values, extra
2769 variables are bound and made to have no value;
2770 ** NSUBSTITUTE on list arguments gets the right answer with
2772 ** ELT signals an error of type TYPE-ERROR when the index argument
2773 is not a valid sequence index;
2774 ** LOOP signals (at macroexpansion time) an error of type
2775 PROGRAM-ERROR when duplicate variable names are found;
2776 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2777 ** FUNCALL of special-operators now cause an error of type
2779 ** PSETQ now works as required in the presence of side-effecting
2780 symbol-macro places;
2781 ** NCONC accepts any object as its last argument;
2782 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2784 ** loop-for-as-package does not require a package to be explicitely
2786 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2788 * fixed bug 166: compiler preserves "there is a way to go"
2789 invariant when deleting code.
2790 * fixed bug 172: macro lambda lists with required arguments after
2791 &REST arguments now cause an error to be signalled. (thanks to
2793 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2794 bug. (thanks to Matthew Danish)
2795 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2797 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2798 arguments are lexically rebound. (thanks to Gerd Moellmann and
2800 * fixed bug 194: error messages are now more informative when there
2801 is no primary method applicable in a call to a generic
2802 function. (thanks to Gerd Moellmann)
2803 * fixed bug in command line argument checking (thanks to Julian
2805 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2806 (thanks to Matthew Danish)
2807 * incremented fasl file version number, because of the
2808 SXHASH-related changes in the layout of CLOS data structures
2810 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2811 * minor incompatible change: The runtime (the Unix executable named
2812 "sbcl") is now much pickier about the .core files it will load.
2813 Essentially it now requires .core files to descend from the same
2814 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2815 as the runtime does. (The intent is to prevent the crashes which
2816 can occur, and which can even be reported as mysterious failures,
2817 when people patch the sources or change the build parameters
2818 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2819 sbcl and .core files.)
2820 * fixed bug: VALUES-LIST is no longer optimized away.
2821 * fixed bug 142: The FFI conversion of C string values to Lisp
2822 string values no longer conses excessively. (thanks to Nathan
2823 Froyd porting Raymond Toy's fix to CMU CL)
2824 * began to systematize and improve MOP conformance in PCL (thanks to
2825 Nathan Froyd, Gerd Moellman and Pierre Mai):
2826 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2828 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2829 ** FINALIZE-INHERITANCE is now called on class finalization;
2830 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2831 argument precedence order.
2832 * fixed bug 202: The compiler no longer fails on functions whose
2833 derived types contradict their declared type.
2834 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2835 so it can be non-toplevel.
2836 * The fasl file version number has changed (because of the new
2837 implementation of DEFMACRO).
2838 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2839 safe code, that any length requirement by their type-specifier
2840 argument is valid. The exceptions to this are described in bug
2842 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2843 functions now check the types of their inputs as required by ANSI.
2844 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2845 introduced symbol is DECLAREd to be SPECIAL.
2846 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2847 * fixed bug: :COUNT argument to sequence functions may be negative
2848 * fixed bug: body of DO-SYMBOLS may contain declarations
2849 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2850 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2851 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2852 symbol macro only once
2853 * fixed printing of call frame when argument list is unavailable
2854 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2855 * compiler no longer signals WARNING on unknown keyword
2858 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2859 * A beta-quality port to the mips architecture running Linux,
2860 based on the old CMUCL backend, has been made. It has been tested
2861 on a big-endian kernel, and works sufficiently well to be able to
2862 rebuild itself; it has not been tested in little-endian mode.
2863 * fixed an inconsistency between gencgc.c and purify.c which made
2864 dumping/loading .core files unreliable
2865 * fixed bug 120a: The compiler now deals correctly with IFs where
2866 the consequent is the same as the alternative, instead of
2867 misderiving the return type. (thanks to Alexey Dejneka)
2868 * fixed bug 113: Logical pathnames are now dumpable (the logical
2869 host is resolved at load-time, throwing an error if it is not
2871 * fixed bug 174: FORMAT's error message is slightly clearer when a
2872 non-printing character is used in a format directive.
2873 * fixed several bugs in compiler checking of type declarations, i.e.
2874 violations of the Python "declarations are assertions" principle
2875 (thanks to Alexey Dejneka)
2876 * fixed several bugs in PCL's error checking (thanks to Gerd
2878 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2880 * fixed bug in compilation of functions as first class values
2881 (thanks to Antonio Martinez-Shotton)
2882 * The compiler's handling TYPE-ERRORs which it can prove will
2883 inevitably happen at runtime has been cleaned up and corrected
2884 in several ways. (thanks to Alexey Dejneka)
2885 * improved argument type checking for various basic arithmetic
2886 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2887 lavished on them in the past that they can be compiled in many
2888 ways in different special cases
2889 * fixed bug 181: compiler checks validity of user supplied type
2891 * cleaned up code flushing in optimization: Function calls which
2892 should signal errors for safety purposes (e.g. which ANSI says
2893 should signal errors when their arguments are of incorrect type)
2894 are no longer optimized away.
2895 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2896 * incremented fasl file version number, because changes in the
2897 implementation of sequence functions like COERCE caused
2898 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2899 in old inline expansions) to become undefined. (Actually these
2900 changes were later undone, so we might very well be binary
2901 compatible with 0.7.7 after all, but leaving the version number
2902 incremented seemed like the simplest and most conservative
2905 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2906 * An alpha-quality port to the parisc architecture running Linux,
2907 based on the old CMUCL backend, has been made. This, even more so
2908 than the other backends, should be considered still a work in
2909 progress; known problems include that the Linux kernel in 64-bit
2910 mode does not propagate the correct sigcontext structure to
2911 userspace, and consequently SBCL on a parisc64 kernel will not
2913 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2914 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2915 suppressed.) Also now that the compiler is looking at declarations
2916 in the environment, it checks optimization declarations as well,
2917 and suppresses inlining when (> DEBUG SPEED).
2918 * More fixes have been made to treatment of floating point exception
2919 treatment and other Unix signals. In particular, floating point
2920 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2921 * The detection and handling of control stack exhaustion (infinite
2922 or very deeply nested recursion) has changed. Stack exhaustion
2923 detection is now done by write-protecting pages at the OS level
2924 and applies at all optimization settings; when found, a
2925 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2926 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2927 be caught using IGNORE-ERRORS.
2928 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2929 correctly when transforming recursive LABELS functions to LETs.
2930 (thanks to Alexey Dejneka)
2931 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2932 that are names of constants or global variables.
2933 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2934 alien routines with docstrings.
2935 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2936 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2938 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2939 (thanks to Eric Marsden)
2940 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2941 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2942 * Bug fix: The SPARC backend can now compile functions involving
2943 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2944 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2945 to a functions expecting a PATHNAME-DESIGNATOR.
2946 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2947 lambda lists. (thanks to Alexey Dejneka)
2948 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2949 functions so that EXPORTing the name of the class doesn't cause
2950 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2951 to Antonio Martinez for reporting this)
2952 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2953 constant-folded without failing an assertion. (thanks to Einar
2954 Floystad Dorum for reporting this)
2955 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2956 types are now dealt with more correctly by the compiler.
2957 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2958 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2959 behaviour analogous to RENAME-FILE. This puts its behaviour more
2960 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2962 * The fasl file version number has changed again. (because of the
2963 bug fix involving the names of PCL MAKE-INSTANCE functions)
2965 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2966 * bug fix: Floating point exceptions are treated much more
2967 consistently on the x86/Linux and PPC/Linux platforms.
2968 * Array initialization with :INITIAL-ELEMENT is now much faster for
2969 cases when the compiler cannot open code the array creation, but
2970 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2971 array accesses have also seen a speed increase.
2972 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2973 specified. (This was at the root of some bad interactions between
2974 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2976 * bug fix: Internal error arguments for undefined functions are now
2977 computed correctly on the PPC/Linux platform.
2978 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2979 Raymond Toy's patch for CMU CL)
2980 * Support for the Solaris 9 operating environment has been included
2981 (thanks to Daniel Merritt)
2982 * A very ugly but hopefully complete draft of the missing FFI chapter
2983 of the manual has been created by reformatting the corresponding
2984 CMU CL manual chapter into (currently very ugly and incoherent)
2985 DocBook and bringing it up to date for SBCL behavior. Thus, the
2986 manual is now essentially complete, at least by my extreme
2987 once-and-only-once standards, whereby it's acceptable to refer to
2988 the doc strings of SB-EXT functions as the primary documentation.
2989 * The fasl file version number has changed again, due to cleanup of
2990 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2991 is no longer a static symbol.)
2993 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2994 * SBCL now builds with OpenMCL (version 0.12) as the
2995 cross-compilation host; also, more progress has been made toward
2996 bootstrapping under CLISP.
2997 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2999 * bug 158 fixed: The compiler can now deal with integer loop
3000 increments different from 1; fixing this turned out also to fix
3002 * bug 169 fixed: no more bogus warnings about using lexical bindings
3003 despite the presence of perfectly good SPECIAL declarations (thanks
3004 to David Lichteblau)
3005 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3006 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3007 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3009 * bug 180 fixed: Method combination specifications no longer ignore
3010 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3011 * bug fix: Structure type predicate functions now check their argument
3012 count as they should.
3013 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3014 correctly. (thanks to Pierre Mai)
3015 * minor incompatible change: The --noprogrammer option is deprecated
3016 in favor of the new --disable-debugger option, which is very similar.
3017 (The major difference is that it takes effect at a slightly different
3018 time at startup, causing handling of errors in --sysinit and
3019 --userinit files will be affected differently.) The
3020 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3021 been added to allow this functionality to be controlled from ordinary
3022 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3023 maintainers, who might want to run non-interactive scripts to
3024 build SBCL cores which will later be used interactively.)
3025 * minor incompatible change: The LOAD function no longer, when given
3026 a wild pathname to load, loads all files matching that pathname.
3027 Instead, an error of type FILE-ERROR is signalled.
3029 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3030 * bug 147 fixed: The compiler preserves its block link/count
3031 invariants more correctly now so that it doesn't crash. (thanks
3033 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3035 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3036 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3037 no-value-for-this-character as NIL (as specified by ANSI).
3038 * HOST-NAMESTRING on physical pathnames now returns a string that is
3039 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3040 (thanks to Christophe Rhodes)
3041 * The Alpha port handles icache flushing more correctly. (thanks to
3043 * More progress has been made toward bootstrapping under CLISP. (thanks
3044 to Christophe Rhodes)
3045 * The fasl file format has changed again, because dynamic loading
3046 on OpenBSD (which has non-ELF object files) motivated some cleanups
3047 in the way that foreign symbols are transformed and passed around.
3048 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3049 is no longer treated as whitespace by the reader, but instead as
3050 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3051 |A
\7fB|, instead of A as it used to.
3053 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3054 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3055 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3056 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3057 this as of 0.7.1.45, but was left out of the previous news section
3058 (thanks to Dan Barlow)
3059 * SBCL now runs on the Solaris operating system on SPARC architectures
3060 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3061 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3062 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3063 * SPARC backend cleanups, allowing builds of cores optimized for V8
3064 and V9 SPARCS, and also emission of code targeted to a particular
3065 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3067 * SBCL is closer to bootstrapping under CLISP, thanks to various
3068 fixes by Christophe Rhodes.
3069 * The fasl file format has changed again, to allow the compiler's
3070 INFO database to support symbol macros.
3071 * The user manual (in doc/) is formatted into HTML more nicely.
3072 (thanks to coreythomas)
3073 * The system is smarter about SUBTYPEP relationships, especially
3074 those involving NOT types (including types such as ATOM which are
3075 represented internally using NOT types). Thus SUBTYPEP is less
3076 likely to return (VALUES NIL NIL) in general, and in particular
3077 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3079 * The fasl file format has changed again, because the internal
3080 representation of types now includes a new slot to support the new
3081 SUBTYPEP-of-NOT-types logic.
3082 * (not a change in the main branch of SBCL, but a related prototype
3083 which can hopefully be merged into the main branch of SBCL in the
3084 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3085 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3086 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3087 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3088 dispatch macro character combinations. (thanks to Alexey Dejneka)
3089 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3090 that superficially look like logical namestrings correctly.
3091 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3093 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3094 default supplied-p) for &optional and &key arguments. (thanks to
3097 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3098 * incompatible change: The compiler is now less aggressive about
3099 tail call optimization, doing it only when (> SPACE DEBUG) or
3100 (> SPEED DEBUG). (This is an incompatible change because there are
3101 programs which relied on the old CMU-CL-style behavior to optimize
3102 away their unbounded recursion which will now die of stack overflow.)
3103 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3104 for non-GENCGC systems has been increased to 20M (since that
3105 seems much closer to the likely performance optimum for modern
3106 systems than the old 4M value was)
3107 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3108 and *DEBUG-PRINT-LEVEL*
3109 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3110 of CMU CL's support for SPARC, and various endianness and other
3111 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3112 * new syntactic sugar for the Unix command line: --load foo.bar is now
3113 an alternate notation for --eval '(load "foo.bar")'.
3115 ** The system now detects stack overflow and handles it gracefully,
3116 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3117 optimization settings. (This is a good thing in general, and
3118 its introduction in this version should be particularly timely
3119 for anyone whose code fails because of suppression of tail
3121 ** The system now hunts for the C variable "environ" in a more
3122 devious way, to avoid segfaults when the C library version differs
3123 between compile time and run time. (thanks to Christophe Rhodes)
3124 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3125 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3126 ** The compiler no longer issues bogus style warnings for undefined
3127 classes in the same source file as the DEFCLASSes which defined
3128 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3130 ** fixes in CONDITION class precedence list for undefined function
3131 errors (thanks to Alexei Dejneka)
3132 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3133 correctly. (thanks to Dan Barlow)
3134 ** portability fixes aiming at bootstrapping under CLISP (thanks
3135 to Dave McDonald and Christophe Rhodes)
3136 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3137 ** fixes in type translation and and type inference (thanks to
3139 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3140 ** various fixes in the new ports (thanks to Dan Barlow)
3141 * several changes related to debugging:
3142 ** suppression of tail recursion, as noted above
3143 ** stack overflow detection, as noted above
3144 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3145 is now the default. (For some time encapsulation has been more
3146 reliable than the breakpoint-based :ENCAPSULATE NIL
3147 implementation, at least on X86 systems; and I just noticed that
3148 encapsulation also seems closer to the spirit of the ANSI
3151 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3153 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3154 up properly again. (There was a packaging bug in 0.7.0 which
3155 left their definitions in SB-SYS::LOAD-FOREIGN and
3156 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3157 vital for most things which interface to C-level interfaces,
3158 like extensions working with sockets or databases or
3159 Perl-compatible regexes or whatever, and the need to fix
3160 this bug is the main reason that 0.7.1 was released so
3162 ** DEFGENERIC is now choosier about the methods it redefines, so that
3163 reLOADing a previously-LOADed file containing DEFGENERICs does
3164 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3165 cycle now works as it should. (thanks to Alexey Dejneka)
3166 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3167 fixed by Christophe Rhodes. (He actually submitted this patch
3168 months ago, and I delayed until after 0.7.0.)
3169 ** Bug 111 (internal compiler confusion about runtime checks on
3170 FUNCTION types) was fixed by Alexey Dejneka.
3171 * Some internal cleanups (getting rid of variables which aren't
3172 needed now that the byte interpreter is gone) caused the fasl
3173 file format number to change again.
3175 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3176 * major incompatible change: The default fasl file extension, i.e. the
3177 default extension for files produced by COMPILE-FILE, has changed
3178 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3180 ** There are many changes in the implementation of the compiler.
3181 SBCL is now essentially a compiler-only implementation of ANSI
3182 Common Lisp. EVAL still "interprets" a few special cases, but
3183 almost all the interesting cases are handled by creating
3184 a LAMBDA expression, calling COMPILE on it, then calling
3185 FUNCALL on the result.
3186 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3187 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3188 Since the code is newer, there might still be some new bugs
3189 (though not as many as before Martin Atzmueller's fixes:-). But
3190 the new code is substantially simpler and clearer, and hopefully
3191 any remaining bugs will be simpler, less fundamental, and more
3192 fixable then the bugs in the old code.
3193 ** The revised compiler is still a little unsteady on its feet.
3195 *** The debugging information it produces (particularly the names
3196 of FUNCTION objects) is sometimes much less useful than what
3197 the old compiler produced.
3198 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3199 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3200 within a MACROLET) has been temporarily weakened.
3201 ** There are new compiler optimizations for various functions:
3202 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3203 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3204 *** the math functions TRUNCATE, FLOOR, and CEILING
3205 *** the function-of-all-trades COERCE
3206 Mostly these should be transparent, but there's one
3207 potentially-annoying problem (bug 117): when the compiler
3208 inline-expands a function and does type analysis on the result,
3209 it can create control paths which have type mismatches, and
3210 when it can't prove that those control paths aren't taken,
3211 it will issue WARNINGs about the type mismatches. This is
3212 a particular problem in practice for the new sequence functions.
3213 It's not clear how this should be fixed, and for now, a
3214 workaround is given in the entry for 117 in the BUGS file.
3215 ** (Because of the interaction between the two previous items --
3216 occasional inlining problems and new inline expansions -- some
3217 of the new sequence function optimizations won't really kick in
3218 completely until debugging information, and then inlining, are
3219 straightened out in some future version.)
3220 * minor incompatible changes:
3221 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3222 DIRECTORY no longer implicitly promotes NIL slots of its
3223 pathname argument to :WILD. In particular, when you ask for the
3224 contents of a directory (which you used to be able to do without
3225 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3226 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3227 ** changes in behavior that ANSI explicitly defines to be
3228 implementation dependent:
3229 *** The new compiler-only implementation still conforms with ANSI,
3230 but acts a little different than before. Besides the obvious
3231 changes in performance tradeoffs (that the cost per form passed
3232 to EVAL has gone up, and the cost per form executed by EVAL
3233 has gone down), the behavior of the system changes a little
3234 because there are no longer any interpreted function objects.
3235 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3236 e.g. doing COMPILE on the output of interactive DEFUN is
3238 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3240 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3241 has changed from (:CL) to NIL.
3242 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3243 e.g. #\Newline and #\Tab, don't have names specified in the
3244 ANSI Common Lisp standard, is now based on their ASCII symbolic
3245 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3246 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3247 are no longer used for output.
3248 ** changes in internal implementation constants:
3249 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3250 4 million. (If your application spends a lot of time GCing and
3251 you have a lot of RAM, you might want to experiment with
3252 increasing it even more.)
3253 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3254 However, almost all old code should still continue to work without
3255 immediate update, as SB-C-CALL is now a (deprecated) nickname
3257 ** Old operator names in the style DEF-FOO are now deprecated in
3258 favor of new corresponding names DEFINE-FOO, for consistency with
3259 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3260 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3261 internal symbols, but a few supported extensions like
3262 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3263 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3264 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3265 etc. as you get deeper into recursive calls to the debugger
3266 command loop, instead of the old "5]", "5]]", "5]]]"
3267 sequence. (I was motivated to do this when squabbles between
3268 ILISP and SBCL left me very deeply nested in the debugger. In the
3269 short term, this change will probably provoke more ILISP/SBCL
3270 squabbles, but hopefully it will be an improvement in the long run.)
3271 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3272 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3273 function, since declaiming return types involving aliens is
3274 (1) annoyingly messy to do by hand and (2) vital to efficient
3275 compilation of code which calls such functions.
3276 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3277 longer reexported by the SB-EXT package. They're solely useful
3278 for alien code, so it seems more logical that you should get
3279 them from the SB-ALIEN package, not in SB-EXT.
3280 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3281 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3282 features. Instead, the code that they used to control is always
3283 built into the system.
3284 * many other bug fixes
3285 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3286 advantage of the new EVAL-WHEN stuff and to clean them up in
3287 general, and they are now more ANSI-compliant in a number of
3288 ways. Martin Atzmueller is responsible for a lot of this.
3289 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3291 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3292 *** correct ERROR type for various file operations
3293 *** some fixes for Lisp streams
3294 *** DEFMETHOD syntax checking
3295 *** changing old weird representation of debug information as
3296 strings (which, among their other deficiencies, don't transform
3297 correctly when you rename packages, and don't change their
3298 print representation when you change things like *PACKAGE*
3299 and *PRINT-LENGTH*) to symbols and lists of symbols
3300 He also made several improvements and fixed several bugs in DESCRIBE.
3301 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3303 *** misbehavior of WRITE-STRING/WRITE-LINE
3304 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3305 and several other LOOP problems as well
3306 *** DIRECTORY when similar filenames are present
3307 *** DEFGENERIC with :METHOD options
3308 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3309 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3310 *** argument ordering in FIND with :TEST option
3311 *** mishandled package designator argument in APROPOS-LIST
3312 *** various problems in the backquote readmacro
3313 *** a bug in APROPOS
3314 *** probably some others that I'm not describing very well here,
3315 since the CVS log documents them by reference to sbcl-devel
3316 messages, and the SourceForge archives aren't working well.:-(
3317 ** Dan Barlow improved the Alpha port (and is making progress on the
3318 PPC port, for those of you who think different).
3319 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3320 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3321 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3322 continues to work on the SPARC port (for those of you in a position
3323 to look down upon our little PC-compatible boxes from a great height).
3324 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3325 and uses that copy, rather than the current dynamic value, when
3326 it's trying to decide whether to truncate output. Thus e.g.
3327 (let ((*print-lines* 50))
3328 (pprint-logical-block (stream nil)
3330 (let ((*print-lines* 8))
3331 (print (aref possiblybigthings i) stream)))))
3332 should now truncate the logical block only at 50 lines, instead of
3333 often truncating it at 8 lines, as it did before.
3334 * The doc/cmucl/ directory, containing old CMU CL documentation
3335 from the time of the fork, is no longer part of the base system.
3336 SourceForge has shut down its anonymous FTP service, and with it
3337 my original plan for distributing the old CMU CL documentation
3338 there. For now, if you need these files you can download an old
3339 SBCL source release and extract them from it.
3340 * The fasl file version number changed again, for dozens of reasons,
3341 some of which are apparent above.
3343 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3344 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3345 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3346 patch, so that DISASSEMBLE output is much nicer.
3347 * The code in the SB-PROFILE package now seems reasonably stable.
3348 I still haven't decided what the final interface should look like
3349 (I'd like PROFILE to interact cleanly with TRACE, since both
3350 facilities use function encapsulation) but if you have a need
3351 for profiling now, you can probably use it successfully with
3352 the current CMU-CL-style interface.
3353 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3354 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3355 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3356 link now returns the dangling link itself, and for similar
3357 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3358 link itself. (In these cases the old code signalled an error and
3359 looped endlessly, respectively.) Thus, DIRECTORY now works even
3360 in the presence of dangling and cyclic symbolic links.
3361 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3362 is now a supported extension again, since the consensus on
3363 sbcl-devel was that it can be useful for ordinary development
3364 work, not just for debugging SBCL itself.
3365 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3366 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3367 that currently-defined functions might be redefined later with
3368 different return types.
3369 * Hash tables can be printed readably, as inspired by CMU CL code
3370 of Eric Marsden and SBCL code of Martin Atzmueller.
3371 * better error handling in CLOS method combination, thanks to
3372 Martin Atzmueller porting Pierre Mai's CMU CL patches
3373 * more overflow fixes for >16Mbyte I/O buffers
3374 * A bug in READ has been fixed, so that now a single Ctrl-D
3375 character suffices to cause end-of-file on character streams.
3376 In particular, now you only need one Ctrl-D at the command
3377 line (not two) to exit SBCL.
3378 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3380 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3381 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3382 does the right thing.
3383 * The implementation of some type tests, especially for CONDITION
3384 types, is now tidier and maybe faster, due to CMU CL code
3385 originally by Douglas Crosher, ported by Martin Atzmueller.
3386 * Some math functions have been fixed, and there are new
3387 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3388 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3389 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3390 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3391 likely to be built into sbcl-0.7.0.)
3392 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3393 CL, ported to SBCL by Martin Atzmueller)
3394 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3395 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3396 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3397 * There's a new slam.sh hack to shorten the edit/compile/debug
3398 cycle for low-level changes to SBCL itself, and a new
3399 :SB-AFTER-XC-CORE target feature to control the generation of
3400 the after-xc.core file needed by slam.sh.
3401 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3402 COMPILE-FILE is no longer supported, so that now every function
3403 gets an entry point, so that block compilation looks a little
3404 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3405 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3406 returns the number of bytes consed since the system started,
3407 rather than the number consed since the first time the function
3408 was called. (The new definition parallels ANSI functions like
3409 CL:GET-INTERNAL-RUN-TIME.)
3410 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3411 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3412 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3413 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3414 * Fasl file version numbers are now independent of the target CPU,
3415 since historically most system changes which required version
3416 number changes have affected all CPUs equally. Similarly,
3417 the byte fasl file version is now equal to the ordinary
3420 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3421 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3422 is no longer recognized. I apologize for this, because it was
3423 listed in SB-EXT as a supported extension, but I found that
3424 its existing behavior was poorly specified, as well as incorrectly
3425 specified, and it looked like too much of a mess to straighten it
3426 out. I have enough on my hands trying to get ANSI stuff to work..
3427 * many patches ported from CMU CL by Martin Atzmueller, with
3428 half a dozen bug fixes in pretty-printing and the debugger, and
3429 half a dozen others elsewhere
3430 * fixed bug 13: Floating point infinities are now supported again.
3431 They might still be a little bit flaky, but thanks to bug reports
3432 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3433 as flaky as they were.
3434 * The --noprogrammer command line option is now supported. (Its
3435 behavior is slightly different in detail from what the old man
3436 page claimed it would do, but it's still appropriate under the
3437 same circumstances that the man page talks about.)
3438 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3439 are now supported, and enabled by default. Thus, the compiler can
3440 handle many floating point and complex operations much less
3441 inefficiently. (Thus e.g. you can implement a complex FFT
3443 * The compiler now detects type mismatches between DECLAIM FTYPE
3444 and DEFUN better, and implements CHECK-TYPE more correctly, and
3445 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3446 thanks to patches from Martin Atzmueller.
3447 * various fixes to make the cross-compiler more portable to
3448 ANSI-conforming-but-different cross-compilation hosts (notably
3449 Lispworks for Windows, following bug reports from Arthur Lemmens)
3450 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3451 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3452 fixed thanks to Pierre Mai's CMU CL patches.
3453 * fixes to keep the system from overflowing internal counters when
3454 it tries to use i/o buffers larger than 16M bytes
3455 * fixed bug 45a: Various internal functions required to support
3456 complex special functions have been merged from CMU CL sources.
3457 (When I was first setting up SBCL, I misunderstood a compile-time
3458 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3459 * improved support for type intersection and union, fixing bug 12
3460 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3461 more obscure bugs as well
3462 * some steps toward byte-compiling non-performance-critical
3463 parts of the system, courtesy of patches from Martin Atzmueller
3464 * Christophe Rhodes has made some debian packages of sbcl at
3465 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3466 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3467 stable, but are nonetheless usable. When he's ready, I'd be happy
3468 to add them to the SourceForge "File Releases" section. (And if
3469 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3470 * new fasl file format version number (because of changes in
3471 internal representation of (OR ..) types to accommodate the new
3472 support for (AND ..) types, among other things)
3474 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3475 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3477 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3479 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3480 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3481 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3482 * DESCRIBE now works on structure objects again.
3483 * Most function call argument type mismatches are now handled as
3484 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3485 know whether the function will be redefined before the call is
3486 executed. (The compiler could flag local calls with full WARNINGs,
3487 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3488 it doesn't keep track of enough information to know whether calls
3489 are local in this sense.)
3490 * Compiler output is now more verbose, with messages truncated
3491 later than before. (There should be some supported way for users
3492 to override the default verbosity, but I haven't decided how to
3493 provide it yet, so this behavior is still controlled by the internal
3494 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3495 src/compiler/ir1util.lisp.)
3496 * Fasl file format version numbers have increased again, because
3497 support for the Gray streams extension changes the layout of the
3498 system's STREAM objects.
3499 * The Gray subclassable streams extension now works, thanks to a
3500 patch from Martin Atzmueller.
3501 * The full LOAD-FOREIGN extension (not just the primitive
3502 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3503 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3504 but like most other programs, it defaults to copying the Unix
3505 environment from the original process instead of starting the
3506 new process in an empty environment.
3507 * Extensions which manipulate the Unix environment now support
3508 an :ENVIRONMENT keyword option which doesn't smash case or
3509 do other bad things. The CMU-CL-style :ENV option is retained
3510 for porting convenience.
3511 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3512 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3514 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3516 * A patch from Martin Atzmueller seems to have solved the SIGINT
3517 problem, and as far as we know, signal-handling now works cleanly.
3518 (If you find any new bugs, please report them!)
3519 * The system no longer defaults Lisp source file names to types
3520 ".l", ".cl", or ".lsp", but only to ".lisp".
3521 * The compiler no longer uses special default file extensions for
3522 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3523 seems to expect a single default extension for all compiled code,
3524 and there's no compelling reason to try to stretch the standard
3525 to allow two different extensions.) Instead, byte-compiled files
3526 default to the same extension as native-compiled files.
3527 * Fasl file format version numbers have increased again, because
3528 a rearrangement of internal implementation packages made some
3529 dumped symbols in old fasl files unreadable in new cores.
3530 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3531 many fewer weird special cases.
3532 * Bug #17 (differing COMPILE-FILE behavior between logical and
3533 physical pathnames) has been fixed, and some related misbehavior too,
3534 thanks to a patch from Martin Atzmueller.
3535 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3536 by Tim Moore, ported to SBCL by Martin Atzmueller.
3537 * Martin Atzmueller fixed several filesystem-related problems,
3538 including bug #36, in part by porting CMU CL patches, which were
3539 written in part by Paul Werkowski.
3540 * More compiler warnings in src/runtime/ are gone, thanks to
3541 more patches from Martin Atzmueller.
3542 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3545 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3547 * DESCRIBE now works on CONDITION objects.
3548 * The debugger now handles errors which arise when trying to print
3549 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3551 * The build system now uses an additional file, customize-target-features.lisp,
3552 to allow local modifications to the target *FEATURES* list. (The point of
3553 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3554 debugging features enabled, without having to worry about propagating it
3555 into everyone's system when I do a "cvs update".) When no
3556 customize-target-features.lisp file exists, the target *FEATURES* list
3557 should be constructed the same way as before.
3558 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3559 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3560 warn about behavior which is undefined under the ANSI spec. Note: This
3561 is specified by ANSI, but it's not very popular with programmers.
3562 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3563 macro in the SBCL sources for an example of a workaround which you
3564 might use to make portable ANSI-standard code which does what you want.
3565 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3566 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3567 when it's used as a non-toplevel form. (This is required in order
3568 to implement the DEFCONSTANT-EQX macro.)
3569 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3570 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3571 funny things, due to bugs in the implementation of EVAL-WHEN
3572 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3573 non-toplevel DEFCONSTANTs are uncommon.)
3574 * The core file version number and fasl file version number have been
3575 incremented, because the old noncompliant DEFCONSTANT behavior involved
3576 calling functions which no longer exist, and because I also took the
3577 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3578 * fixed bug 1 (error handling before read-eval-print loop starts), and
3579 redid debugger restarts and related debugger commands somewhat while
3581 ** The QUIT debugger command is gone, since it did something
3582 rather different than the SB-EXT:QUIT command, and since it never
3583 worked properly outside the main toplevel read/eval/print loop.
3584 Invoking the new TOPLEVEL restart provides the same functionality.
3585 ** The GO debugger command is also gone, since you can just invoke
3586 the CONTINUE restart directly instead.
3587 ** The TOP debugger command is also gone, since it's redundant with the
3588 FRAME 0 command, and since it interfered with abbreviations for the
3590 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3592 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3593 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3594 some porting work by Martin Atzmueller)
3595 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3596 with a boatload of patches which he ported to SBCL. Now that those
3598 ** The system tries to make sure that its low-priority messages
3599 are prefixed by semicolons, to help people who like to use
3600 syntax highlighting in their ILISP buffer. (This patch
3601 was originally due to Raymond Toy.)
3602 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3603 patches originally written by Raymond Toy.
3604 ** The compiler understands coercion between single-value and
3605 multiple-VALUES type expressions better, getting rid of some very
3606 weird behavior, thanks to patches originally by Robert MacLachlan
3607 and Douglas Crosher.
3608 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3609 lambda lists, thanks to a patch originally by Pierre Mai.
3610 ** The system no longer bogusly warns about "abbreviated type
3612 ** The compiler gets less confused by inlining and RETURN-FROM,
3613 thanks to some patches originally by Tim Moore.
3614 ** The system no longer hangs when dumping circular lists to fasl
3615 files, thanks to a patch originally from Douglas Crosher.
3616 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3617 undefined function error.
3618 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3619 in structure slot initforms) for now, documented workaround instead:-|
3620 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3621 * fixed bug 5: added stubs for various Gray stream functions called
3622 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3623 installed, at least appropriate type errors are generated
3624 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3625 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3626 consistently in DEFMETHOD forms.
3627 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3628 it doesn't seem to affect SBCL after all
3629 * The C runtime system now builds with better optimization and many
3630 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3632 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3634 * The system is now under CVS at SourceForge (instead of the
3635 CVS repository on my home machine).
3636 * The new signal handling code has been tweaked to treat register
3637 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3638 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3639 downstream, e.g. in debug-int.lisp, has implicit dependencies
3640 on the unsignedness of integer representation of machine words,
3641 and that caused the system to bomb out with infinite regress
3642 when trying to recover from type errors involving signed values,
3643 e.g. (BUTLAST '(1 2 3) -1).)
3644 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3645 (This was one of the bugs Peter Van Eynde reported back in July.)
3646 * The system now uses code inspired by Colin Walters' O(N)
3647 implementation of MAP (from the cmucl-imp@cons.org mailing
3648 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3649 inline the MAP operation, and there is more than one
3650 sequence argument to the MAP call (so that it can't just
3651 do ETYPECASE once and for all based on the type of the
3652 single sequence argument). (The old non-inline implementation
3653 of the general M-argument sequence-of-length-N case required
3654 O(M*N*N) time when any of the sequence arguments were LISTs.)
3655 * The QUIT :UNIX-CODE keyword argument has been renamed to
3656 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3657 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3659 * Raymond Wiker's patches to port dynamic loading from Linux to
3660 FreeBSD have been added.
3661 * The BUGS file is now more nearly up to date, thanks in large part
3662 to Martin Atzmueller's review of it.
3663 * The debugger now flushes standard output streams before it begins
3664 its output ("debugger invoked" and so forth).
3665 * The core version number and fasl file version number have both
3666 been incremented, because of incompatible changes in the layout
3668 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3669 used to not be called for a saved Lisp image.)
3670 * Martin Atzmueller's version of a patch to fix a compiler crash,
3671 as posted on sbcl-devel 13 September 2000, has been installed.
3672 * Instead of installing Martin Atzmueller's patch for the
3673 compiler transform for SUBSEQ, I deleted the compiler transform,
3674 and transforms for some similar consing operations.
3675 * A bug in signal handling which kept TRACE from working on OpenBSD
3677 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3678 away by constant folding
3679 * The system now defines its address space constants in one place
3680 (in the Lisp sources), and propagates them automatically elsewhere
3681 (through GENESIS and the sbcl.h file). Therefore, patching the
3682 address map is less unnecessarily tedious and error-prone. The
3683 Lisp names of address space constants have also been systematized.
3684 * CVS tags like dollar-Header-dollar have been removed from
3685 the sources, because they have never saved me trouble and
3686 they've been source of trouble working with patches and other
3687 diff-related operations.
3688 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3689 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3691 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3693 * The system has been ported to OpenBSD.
3694 * The system now compiles with a simple "sh make.sh" on the systems
3695 that it's supported on. I.e., now you no longer need to tweak
3696 text in the target-features.lisp-expr and symlinks in src/runtime/
3697 by hand, the make.sh takes care of it for you.
3698 * The system is no longer so grossly inefficient when compiling code
3699 involving vectors implemented as general (not simple) vectors (VECTOR T),
3700 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3701 which dares to use the various sequence functions on non-simple
3702 vectors, takes less of a performance hit.
3703 * There is now a primitive type predicate VECTOR-T-P
3704 to test for the (VECTOR T) type, so that e.g.
3705 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3706 can now be compiled with some semblance of efficiency. (The old code
3707 turned the type declaration into a full call to %TYPEP at runtime!)
3708 * AREF on (VECTOR T) is still not fast, since it's still compiled
3709 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3710 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3711 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3712 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3713 without making full calls to SUBTYPEP at runtime.
3714 (Some analogous efficiency issues for non-simple vectors specialized to
3715 element types other than T, or for non-simple multidimensional arrays,
3716 have not been addressed. They could almost certainly be handled the
3717 same way if anyone is motivated to do so.)
3718 * The changes in array handling break binary compatibility, so
3719 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3720 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3721 instead of (VALUES T T).
3722 * By following the instructions that Dan Barlow posted to sbcl-devel
3723 on 2 July 2000, I was able to enable primitive dynamic object
3724 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3725 functionality is not implemented (since it calls ld to resolve
3726 library references automatically, requiring RUN-PROGRAM for its
3727 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3728 try to resolve library references) is now supported.
3729 * The system now flushes the standard output streams when it terminates,
3730 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3731 them at several other probably-convenient times, e.g. in each pass of
3732 the toplevel read-eval-print loop, and after evaluating a form given
3733 as an "--eval" command-line option. (These changes were motivated by a
3734 discussion of stream flushing issues on cmucl-imp in August 2000.)
3735 * The source transform for TYPEP of array types no longer assumes
3736 that an array whose element type is a not-yet-defined type
3737 is implemented as an array of T, but instead punts, so that the
3738 type will be interpreted at runtime.
3739 * There is now some support for cross-compiling in make.sh: each of
3740 the phases of make.sh has its own script. (This should be transparent
3741 to people doing ordinary, non-cross-compile builds.)
3742 * Since my laptop doesn't have hundreds of megabytes of memory like
3743 my desktop machine, I became more motivated to do some items on
3744 my to-do list in order to reduce the size of the system a little:
3745 ** Arrange for various needed-only-at-cold-init things to be
3746 uninterned after cold init. To support this, those things have
3747 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3748 symbols with such names are now uninterned after cold init).
3749 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3750 fasl files for cold load.
3751 ** Remove the old compiler structure pooling code (which used to
3752 be conditional on the target feature :SB-ALLOC) completely.
3753 ** Redo the representation of some data in cold init to be more compact.
3754 (I also looked into supporting byte compiled code at bootstrap time,
3755 which would probably reduce the size of the system a lot, but that
3756 looked too complicated, so I punted for now.)
3757 * The maximum signal nesting depth in the src/runtime/ support code has
3758 been reduced from 4096 to 256. (I don't know any reason for the very
3759 large old value. If the new smaller value turns out to break something,
3760 I'll probably just bump it back up.)
3761 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3763 * Many, many bugs reported by Peter Van Eynde have been added to
3764 the BUGS list; some have even been fixed.
3765 * While enabling dynamic object file loading, I tried to make the
3766 code easier to understand, renaming various functions and variables
3767 with less ambiguous names, and changing some function calling
3768 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3769 * While trying to figure out how to do the OpenBSD port, I tried to
3770 clean up some of the code in src/runtime/. In particular, I dropped
3771 support for non-POSIX signal handling, added various comments,
3772 tweaked the code to reduce the number of compilation warnings, and
3773 renamed some files to increase consistency.
3774 * To support the new automatic configuration functionality in make.sh,
3775 the source file target-features.lisp-expr has been replaced with the
3776 source file base-target-features.lisp-expr and the machine-generated
3777 file local-target-features.lisp-expr.
3778 * fixed a stupid quoting error in make.sh so that using CMU CL
3779 "lisp -batch" as cross-compilation host works again
3781 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3783 * DESCRIBE no longer tries to call itself recursively to describe
3784 bound/fbound values, so that it no longer fails on symbols which are
3785 bound to themselves (like keywords, T, and NIL).
3786 * DESCRIBE now works on generic functions.
3787 * The printer now prints less-screwed-up representations of closures
3788 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3789 * A private symbol is used instead of the :EMPTY keyword previously
3790 used to mark empty slots in hash tables. Thus
3791 (DEFVAR *HT* (MAKE-HASH-TABLE))
3792 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3793 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3794 now does what ANSI says that it should. (You can still get
3795 similar noncompliant behavior if bang on the hash table
3796 implementation with all the symbols you get back from
3797 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3798 This breaks binary compatibility, since tests for equality to
3799 :EMPTY are wired into things like the macroexpansion of
3800 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3802 * There's now a minimal placeholder implementation for CL:STEP,
3803 as required by ANSI.
3804 * An obscure bug in the interaction of the normal compiler, the byte
3805 compiler, inlining, and structure predicates has been patched
3806 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3807 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3809 * Missing ordinary arguments in a macro call are now detected even
3810 when the macro lambda list contains &KEY or &REST.
3811 * The debugger no longer complains about encountering the top of the
3812 stack when you type "FRAME 0" to explicitly instruct it to go to
3813 the top of the stack. And it now prints the frame you request even
3814 if it's the current frame (instead of saying "You are here.").
3815 * As specified by ANSI, the system now always prints keywords
3816 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3818 * The default initial SIZE of HASH-TABLEs is now smaller.
3819 * Type information from CLOS class dispatch is now propagated
3820 into DEFMETHOD bodies, so that e.g.
3821 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3823 is now basically equivalent to
3824 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3825 (DECLARE (TYPE SINGLE-FLOAT X))
3827 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3828 operation, without having to do run-time type dispatch.
3829 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3830 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3831 * Since I don't seem to be making big file reorganizations very often
3832 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3833 is overflowing my ability to conveniently back them up), I've finally
3834 checked the system into CVS. (The CVS repository is on my home system,
3835 not at SourceForge -- putting it on SourceForge might come later.)
3836 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3837 high-level GC-NOTIFY-FOO functions send their output. (There's
3838 still very little control of where low-level verbose GC functions
3839 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3840 less than it used to -- the GC-NOTIFY-FOO functions are now under
3841 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3842 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3843 in only one place in the source code, and propagates it automatically
3844 everywhere that it's needed. Thus e.g. when I bump the version from
3845 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3846 * The C source files now include boilerplate legalese and documentation
3847 at the head of each file (just as the Lisp source files already did).
3848 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3849 to his page will be replaced with a link to his new CLiki service.
3851 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3853 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3854 * The build process now looks for GNU make under the default name "gmake",
3855 instead of "make" as it used to. If GNU make is not available as "gmake"
3856 on your system, you can change this default behavior by setting the
3857 GNUMAKE environment variable.
3858 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3859 can build without error under CMU CL.
3861 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3863 * There is now a partial SBCL user manual (with some new text and some
3864 text cribbed from the CMU CL manual).
3865 * The beginnings of a profiler have been added (starting with the
3866 CMU CL profiler and simplifying and cleaning up). Eventually the
3867 main interface should be through the TRACE macro, but for now,
3868 it's still accessed through vaguely CMU-CL-style functions and macros
3869 exported from the package SB-PROFILE.
3870 * Some problems left over from porting CMU CL to the new
3871 cross-compilation bootstrap process have been cleaned up:
3872 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3873 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3874 part when getting rid of the compiler *BACKEND* stuff.)
3875 ** The value of *NULL-TYPE* was screwed up, because it was
3876 being initialized before the type system knew the final
3877 definition of the 'NULL type. This screwed up several key
3878 optimizations in the compiler, causing inefficiency in all sorts
3879 of places. (I found it because I wanted to understand why
3880 GET-INTERNAL-RUN-TIME was consing.)
3881 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3882 PROCLAIM FTYPE information. Unfortunately this broke binary
3883 compatibility again, since now the forms output by DEFGENERIC
3884 to refer to functions which didn't exist in 0.6.3.
3885 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3886 can use the new (as of 0.6.3) transform for SOME into MAP into
3888 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3889 values to (INTEGER 0 1000000), so that the time code will no longer
3890 occasionally get blown up by Linux returning 1000000 microseconds
3891 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3892 its output conform to the ANSI spec. (Alas, this makes its output
3893 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3894 * A full call to MAP NIL with a single sequence argument no longer conses.
3895 * fixes to problems pointed out by Martin Atzmueller:
3896 * The manual page no longer talks about multiprocessing as though
3897 it were currently supported.
3898 * The ILISP support patches have been removed from the distribution,
3899 because as of version 5.10.1, ILISP now supports SBCL without us
3900 having to maintain patches.
3901 * added a modified version of Raymond Toy's recent CMU CL patch for
3902 EQUALP comparison of HASH-TABLE
3904 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3906 * The system still can't cross-compile itself with
3907 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3908 entails), but at least it can compile more of itself that way
3909 than it used to be able to, and various buglets which were uncovered
3910 by trying to cross-compile itself that way have now been fixed.
3911 * This release breaks binary compatibility again. This time
3912 at least I've incremented the FASL file format version to 2, so that the
3913 problem can be detected reliably instead of just causing weird errors.
3914 * various new style warnings:
3915 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3916 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3917 ** using the lexical binding of a variable named in the *FOO* style
3918 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3919 as specified by ANSI.
3920 * *RANDOM-STATE* is no longer automatically initialized from
3921 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3922 default behavior of the system is to repeat its behavior every time
3923 it's run. If you'd like to change this behavior, you can always
3924 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3925 old convention there was no comparably easy way to get the system to
3926 repeat its behavior every time it was run.
3927 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3928 FTYPE declarations has been removed, in favor of their ANSI
3929 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3930 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3931 the types of their sequence arguments can be determined at compile time.
3932 This is done through a new open code expansion for MAP which eliminates
3933 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3934 argument types can be determined at compile time.
3935 * The optimizer now transforms COERCE into an identity operation when it
3936 can prove that the coerced object is already of the correct type. (This
3937 can be a win for machine generated code, including the output of other
3938 optimization transforms, such as the MAP transform above.)
3939 * Credit information has been moved from source file headers into CREDITS.
3940 * Source file headers have been made more standard.
3941 * The CASE macro now compiles without complaining even when it has
3944 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3946 * (Note that the way that the PCL macroexpansions were rewritten
3947 to accommodate the change in DEFGENERIC below breaks binary
3948 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3949 not run under sbcl-0.6.2. Once we get out of alpha releases,
3950 i.e. hit release 1.0.0, we'll probably try to maintain binary
3951 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3952 and sbcl-1.4.4. Until then, however, it might be fairly common
3953 for maintenance releases to break binary compatibility.)
3954 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3956 * The reporting of unhandled signals has been changed to print some
3957 explanatory text as well as the report form. (Previously only
3958 the report form was printed.)
3959 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3960 it defines, so that the compiler no longer issues undefined function
3961 warnings for compiled-but-not-yet-loaded generic functions.
3962 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3963 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3964 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3965 section of the ANSI spec are supported.
3966 * The "" nickname for the "KEYWORD" package has been removed.
3967 The reader still handles symbol tokens which begin with a package marker
3968 as keywords, but it doesn't expose its mechanism for doing so in the
3969 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3970 * The system now issues STYLE-WARNINGs for contradictory TYPE
3971 proclamations. (Warnings for contradictory FTYPE proclamations would
3972 be nice too, but those can't be done usefully unless the type system
3973 is made smarter about FUNCTION types.)
3974 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3975 systematized, so that "*target-*.lisp is supposed to exist only on the
3976 target and imply that there's a related file which exists on the
3977 host, and *host-*.lisp is supposed to exist only on the host and imply
3978 that there's a related file which exists on the target. This involves a
3979 lot of renaming. Hopefully the acute confusion caused by the renaming
3980 will be justified by the reduction in chronic confusion..
3981 ** runtime-type.lisp -> early-target-type.lisp
3982 ** target-type.lisp -> late-target-type.lisp
3983 ** early-host-format.lisp -> early-format.lisp
3984 ** late-host-format.lisp -> late-format.lisp
3985 ** host-error.lisp -> misc-error.lisp
3986 ** early-error.lisp -> early-target-error.lisp
3987 ** late-error.lisp -> late-target-error.lisp
3988 ** host-defboot.lisp -> early-defboot.lisp
3989 ** code/misc.lisp -> code/target-misc.lisp
3990 ** code/host-misc.lisp -> code/misc.lisp
3991 ** code/numbers.lisp -> code/target-numbers.lisp
3992 ** code/early-numbers.lisp -> numbers.lisp
3993 ** early-host-type.lisp -> early-type.lisp
3994 ** late-host-type.lisp -> late-type.lisp
3995 ** host-typep.lisp -> typep.lisp
3996 ** load.lisp -> target-load.lisp
3997 ** host-load.lisp -> load.lisp
3998 ** host-disassem.lisp -> disassem.lisp
3999 ** host-insts.lisp -> insts.lisp
4000 ** byte-comp.lisp -> target-byte-comp.lisp
4001 ** host-byte-comp.lisp -> byte-comp.lisp
4002 ** host-signal.lisp -> signal.lisp
4003 ** host-defstruct.lisp -> defstruct.lisp
4004 ** late-target-type.lisp -> deftypes-for-target.lisp
4005 Furthermore, several other previously target-only files foo.lisp (e.g.
4006 hash-table.lisp and random.lisp) have been split into a target-and-host
4007 foo.lisp file and a target-only target-foo.lisp file, with their key type
4008 definitions in the target-and-host part, so that the cross-compiler will
4009 know more about target types.
4010 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4011 gone away. In their place are various *BACKEND-FOO* variables
4012 corresponding to the slots of the old structure.
4013 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4014 into the target SBCL has been fixed.
4015 * The chill.lisp system for loading cold code into a running SBCL
4017 * Support for the CMU CL "scavenger hook" extension has been removed.
4018 (It was undocumented and unused in the CMU CL sources that SBCL was
4019 derived from, and stale in sbcl-0.6.1.)
4020 * Various errors in the cross-compiler type system were detected
4021 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4022 (enabling various consistency checks). Many of them were fixed,
4023 but some hard problems remain, so the compiler is back to
4024 running without *TYPE-SYSTEM-INITIALIZED* for now.
4025 * As part of the cross-compiler type system cleanup, I implemented
4026 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4027 * I have started adding UNCROSS calls throughout the type system
4028 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4029 on cross-compiler input files will be able to go away, and various
4031 * CONSTANTP now returns true for quoted forms (as explicitly required
4034 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4036 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4037 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4038 (MAKE-LIST -1). In the longer term, it ought to become true
4039 that declarations are assertions even at SAFETY 1. For now, it's not
4040 quite true even at SAFETY 3, but it's at least more nearly true..
4041 (Note that this change seems to increases the size of the system by
4042 O(5%) and to decrease the speed of the compiler by 20% or more.)
4043 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4044 for the problem of printing dozens of lines of distracting information
4045 about low-level system machinery as part of the top stack frame
4046 on entry to the debugger when an undefined function was called.
4047 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4048 is not reset to COMMON-LISP-USER.
4049 * Compilation of stuff related to dyncount.lisp has been made conditional
4050 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4051 smaller. The various dyncount-related symbols have been moved into
4052 a new "SB-DYNCOUNT" package.
4053 * tty-inspect.lisp has been renamed to inspect.lisp.
4054 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4055 feature has gone away. (When we eventually port to other flavors of
4056 libc and/or Unix, we'll try to make the differences between flavors
4057 invisible at the user level.)
4058 * Various other *FEATURES* tags, and/or their associated conditionals,
4059 have been removed if obsolescent, or given better documentation, or
4060 sometimes given more-mnemonic names.
4062 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4064 * tidied up "make.sh" script
4065 * tidied up system directory structure
4066 * better "clean.sh" behavior
4067 * added doc/FOR-CMUCL-DEVELOPERS
4068 * many many small tweaks to output format, e.g. removing possibly-confusing
4069 trailing #\. character in DESCRIBE-INSTANCE
4070 * (EQUALP #\A 'A) no longer signals an error.
4071 * new hashing code, including EQUALP hashing
4072 * tidied up Lisp initialization and toplevel
4073 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4074 * command line argument processing
4075 * added POSIX-GETENV function to deal with Unix-ish environment variables
4076 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4077 terminating SBCL on EOF
4078 * non-verbose GC by default
4079 * There is no more "sbcl" shell script; the sbcl file is now the C
4080 runtime executable (just like CMU CL).
4081 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4083 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4084 symbol and package information as Lisp native symbol and package objects
4085 instead of strings naming symbols and strings naming packages. This way,
4086 whenever packages are renamed (as in warm init), debug information is
4087 transformed along with everything else.
4088 * tweaked the optimization policy declarations which control the building
4089 of SBCL itself. Now, among other things, the system no longer saves
4090 source location debugging information. (This helps two problems at once
4091 by reducing SBCL size and by keeping SBCL from trying to look for its
4092 sources -- which may not exist -- when reporting errors.)
4093 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4094 debugging and testing purposes
4095 * cleaned up printing, making the printer call PRINT-OBJECT for
4096 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4097 methods, giving nearly-ANSI behavior
4098 * converted almost all special variables to use *FOO* naming convention
4099 * deleted PARSE-TIME functionality, since it can be done portably
4100 * moved some files out of cold init into warm init
4101 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4103 * regularized formatting of source files
4104 * added an install.sh script
4105 * fixed ridiculous memory usage of cross-compiler by making
4106 compiler/alloc.lisp not try to do pooling unless it can hook
4107 itself into the GC of the cross-compilation host. Now the system
4108 builds nicely on my old laptop.
4109 * added :SB-ALLOC in target-features.lisp-expr
4110 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4111 was not implemented)
4112 * re-did condition handling and note reporting in the compiler. Notes
4113 are no longer handled by signalling conditions. Style warnings
4114 and warnings are handled more correctly and reported in such a way
4115 that it's easy to find one or the other in your output (so that you
4116 can e.g. figure out which of many problems caused COMPILE-FILE to
4118 * changed the severity of several compiler warnings from full WARNING
4119 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4120 compiler note reporting so that it doesn't use the condition system
4121 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4122 COMPILE-FILE command)
4123 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4124 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4125 no longer supported, since their implementation was deeply intertwingled
4126 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4127 * removed bogus "support" for compiler macros named (SETF FOO), and
4128 removed the compiler macro for SETF INFO (but only after making a fool
4129 of myself on the cmucl-imp mailing list by posting a bogus patch for
4130 DEFINE-COMPILER-MACRO..)
4131 * Compiled files containing forms which have side effects on the Lisp
4132 reader (such as DEFPACKAGE forms) are now handled more correctly.
4133 (Compiler queuing of top level lambdas has been suppressed by setting
4134 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4135 * deleted various currently-unused source files, e.g. gengc.lisp. They
4136 may be added back at some point e.g. when porting to other architectures,
4137 but until they are it's distracting to distribute them and to try to
4139 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4140 there were so many of them they're just distractions, and UNCROSS is
4141 known to be able to handle the current sources
4142 * moved PROFILE functionality into TRACE, so that it will be clear
4143 how the wrapping and unwrapping of functions when you profile them
4144 interacts with the wrapping and unwrapping of functions when you
4145 trace them. (Actually, the functionality isn't there yet, but at least
4146 the interface specification is there. Hopefully, the functionality will
4147 arrive with some future maintenance release.)
4148 * removed host-oops.lisp
4149 * changed signature of QUIT function to allow UNIX-CODE argument
4150 * fixed READ-SEQUENCE bug
4151 * tweaked verbose GC output so that it looks more like the progress
4152 output that ANSI specifies for functions like LOAD
4153 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4154 * added <http://sbcl.sourceforge.com> to the banner information printed by