1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-0.9.19 (1.0.0?) relative to sbcl-0.9.18:
3 * improvement: runtime option --dynamic-space-size can be used
4 to set the size of the dynamic space reserved on startup.
5 * improvement: floating point modes in effect are now saved in
6 core, and restored on startup.
7 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
8 startup, not time since first call to GET-INTERNAL-REAL-TIME.
9 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
10 threads are not running after *SAVE-HOOKS* have run.
11 * improvement: writes to CLOS instance slots are type-checked in code
12 compiled with (SAFETY 3)
13 * improvement: floating-point exception handling on FreeBSD (thanks to
15 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
16 (thanks to Zach Beane)
17 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
19 * improvement: added support for the Shift-JIS external format.
20 (contributed by NIIMI Satoshi)
21 * bug fix: compiler bug triggered by a (non-standard) VALUES
22 declaration in a LET* was fixed. (reported by Kaersten Poeck)
23 * bug fix: file compiler no longer confuses validated and already
24 dumped structurres. (reported by Kaersten Poeck)
25 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
26 fill-pointer signals a type-error as required. (thanks to
28 * bug fix: disassemly of funcallable instances works.
29 * bug fix: single stepping on PPC.
30 * bug fix: fix thread-safety problems in the type system (generally
31 manifesting as nonsensical errors like "STRING is a bad type specifier
32 for sequences" or "The value 1 is not of type FIXNUM")
33 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
34 (reported by Josip Gracin)
35 * bug fix: an error is signaled for attempts to displace arrays with
36 incompatible element types (thanks to Mario Mommer)
37 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
38 and don't cause extra consing
39 * optimization: MAP and MAP-INTO are significantly faster on vectors
40 whose elements types have been declared.
41 * Improvements to the Windows port:
42 ** floating point exceptions are now reported correctly.
43 ** stack exhaustion detection works partially.
44 ** more accurate GET-INTERNAL-REAL-TIME.
45 ** better RUN-PROGRAM behaviour in case of errors in the child
47 ** PROBE-FILE now simplifies pathnames correctly.
48 ** DIRECTORY now works correctly with :WILD-INFERIORS.
49 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
50 1st 1970 (although time timezone data will be unreliable).
51 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
53 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
54 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
55 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
57 * bug fix: two potential GC deadlocks affecting threaded builds.
58 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
59 returns T (reported by Anton Kazennikov)
60 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
61 with non-variable places
62 * bug fix: remove a race condition in the setting of
63 funcallable-instance functions, this should make threaded CLOS
64 code more stable against memory faults.
65 * bug fix: corruption of specials when unbinding is interrupted by an
66 asynchronous unwind (reported by Hannu Koivisto)
67 * improvement: the debugger will now also display local variables that
68 are only used once, for code compiled with a DEBUG optimization quality
71 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
72 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
73 * incompatible change: External-format support for FFI calls. The
74 SB-ALIEN:C-STRING no longer implies an ASCII
75 external-format. Instead the string is subject to external-format
76 conversion. Additionally return values of type SB-ALIEN:C-STRING
77 are by default of type (SIMPLE-ARRAY CHARACTER), not
78 SIMPLE-BASE-STRING. For an alien type that behaves like the old
79 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
80 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
81 * incompatible change: SB-EXT package no longer contains the
82 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
83 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
85 * incompatible change: the single-stepper is no longer available
86 on Alpha, Mips and Sparc platforms.
87 * minor incompatible change: the direct superclasses of
88 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
89 not (STANDARD-OBJECT FUNCTION). This makes the
90 class-precedence-lists of GENERIC-FUNCTION and
91 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
93 * minor incompatible change: the default stream external format on
94 non-unicode SBCL is no longer detected from the locale, but is always
96 * new feature: Add a version of evaluator that uses an interpreter instead
97 of the compiler. EVAL still uses the compiler by default, to switch it
98 to use the interpreter, set the value of the variable
99 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
100 * minor incompatible change: the single-stepper REPL has been merged
101 with the normal debugger (see the "Stepping" heading of the debugger help
102 for more details). The debugger command STEP will no longer switch
103 to the single-stepper REPL.
104 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
105 for a type now works.
106 * bug fix: loading of default sysinit file works. (thanks to Leonid
108 * bug fix: better detection of circularities in the file-compiler.
109 (reported by Marco Monteiro)
110 * bug fix: the CL pathname functions now work with files that have
111 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
112 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
113 systems with Unix98 pty semantics.
114 * bug fix: ASDF-INSTALL will now work with bsd tar.
115 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
117 * bug fix: timers expiring in dead threads no longer cause a
118 type-error (reported by Paul "Nonny Mouse").
119 * bug fix: thanks to more lightweight single-stepper instrumentation,
120 code compiled with (DEBUG 3) will compile and execute significantly faster,
121 and will have more accurate type-inferencing than before
122 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
123 whose bindings are modified
124 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
125 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
126 ** replace dummy implementations of CL:MACHINE-INSTANCE and
127 CL:SOFTWARE-VERSION with proper version
129 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
130 * feature: implemented the READER-METHOD-CLASS and
131 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
132 as specified by AMOP.
133 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
135 * optimization: faster LOGCOUNT implementation on x86 and x86-64
136 (thanks to Lutz Euler)
137 * optimization: hashing of general arrays and vectors has been
138 improved. (reported by Any Fingerhut)
139 * enhancement: SB-INTROSPECT is now able to find definitions of
140 profiled functions. (thanks to Troels Henriksen)
141 * enhancement: compiler-macro expansion applies now to FUNCALL forms
142 as well, allowing compiler-macros for SETF-functions to expand.
143 * enhancement: step-instrumentation no longer wraps known
144 single-value functions with multiple-value context, allowing
145 better type inference.
146 * fixed bug #337: use of MAKE-METHOD in method combination now works
147 even in the presence of user-defined method classes. (reported by
148 Bruno Haible and Pascal Costanza)
149 * fixed bug #339(c): if there are applicable methods not part of any
150 long-form method-combination group, call INVALID-METHOD-ERROR.
151 (reported by Bruno Haible)
152 * fixed bug #361: the :FUNCTION initarg in the protocol for
153 initialization of methods can now be used to override
154 internally-produced optimized functions. (reported by Bruno
156 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
157 system-provided lambda expression no longer cause warnings about
158 unbound #:|pv-table| symbols.
159 * bug fix: improved the handling of type declarations and the
160 detection of violations for keyword arguments with non-constant
162 * bug fix: potentially erronous calls to PATHNAME and
163 MERGE-PATHNAMES were being flushed in some cases.
164 (reported by Richard Kreuter)
165 * bug fix: compiled calls to TYPEP were mishandling obsolete
166 instances. (reported by James Bielman and Attila Lendvai)
167 * bug fix: format strings with ~> without matching ~< no longer
168 trigger an AVER, but signal an understandable error instead.
169 (reported by Antonio Martinez)
170 * bug fix: specifying an output-file without a pathname-type for
171 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
172 of input-file instead of "fasl". (reported by Robert Dodier)
173 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
174 (reported by James Y Knight).
175 * bug fix: compiler-macros-function did not consider the environment
176 argument for shadowing by local functions.
177 * bug fix: compiler-macros expansion was inhibited by local INLINE
179 * bug fix: inline expansions of known functions were subject to
180 step-instrumentation in high debug policies, leading to problems
182 * bug fix: compiler failed to differentiate between different CONS
184 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
185 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
186 * bug fix: #368: incorrect use of expressed vs. upgraded array
188 * bug fix: #306a: more precise unions of array types.
189 * thread-safety improvements:
190 ** CONDITION-WAIT could return early on Linux, if the thread was
191 interrupted and subsequently continued with SIGCONT.
192 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
194 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
195 * added support for the ucs-2 external format. (contributed by Ivan
197 * minor incompatible change: pretty printing of objects of type
198 (cons symbol) is, in the default pprint-dispatch-table, now
199 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
201 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
202 called later in a class's lifetime, possibly as late as when the
203 first instance of the class is created. Previously,
204 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
205 class became finalizeable.
206 * fixed bug: FILE-POSITION sometimes returned inconsistent results
207 for multibyte external-format streams. (thanks to "vbzoli")
208 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
209 with :ALLOCATION :CLASS inherited from superclasses of the
211 * fixed bug: anonymous classes can now be created using the :NAME
212 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
213 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
214 * fixed bug: core-files saved with :EXECUTABLE T can again be
215 executed when SBCL_HOME isn't set. (reported by James Knight)
216 * fixed bug: toplevel LOCALLY forms with declarations could
217 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
218 * fixed bug: printing from several different threads using different
219 values of *print-case* could cause invalid output, due to
220 some internal special variables of the printer not being bound
221 thread-locally (reported by Max Mikhanosha)
222 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
223 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
224 (reported by Pascal Costanza)
225 * fixed bug: FINALIZE-INHERITANCE is called from
226 REINITIALIZE-INSTANCE on classes when the class has previously
227 been finalized, as required by AMOP.
228 * minor code generation optimizations:
229 ** better register allocation in CLOS dispatching functions
230 ** overflow detection when coercing signed bytes to fixnums on x86-64
231 ** is now implemented with one IMUL instruction instead of three shifts
232 ** more efficient bit-vector access on x86 and x86-64
233 ** more efficient access to raw structure slots on x86 and x86-64
234 * fixed some bugs revealed by Paul Dietz' test suite:
235 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
238 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
239 * feature: thread support on Solaris/x86, and experimental thread support
241 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
243 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
244 default method for SLOT-UNBOUND.
245 * minor incompatible change: prevent the user from specializing the
246 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
247 somewhat counter to the intent of the protocol, I (CSR) think, and
248 additionally it just doesn't work in SBCL as currently
249 implemented, thanks to optimizations (that are always valid for
250 the other three SLOT-VALUEish functions, but not for the setter).
251 * minor incompatible change: the :SB-LDB feature is now enabled by
252 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
253 the low-level debugger.
254 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
255 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
256 down to an SB-SYS:FD-STREAM, allowing direct communication in
257 more cases. Temporary files and pipes are still used as a fallback
259 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
260 on the non-reentrant C functions localtime(3) and gmtime(3).
261 * bug fix: global optimization policy was not visible in LOCALLY and
263 * bug fix: class objects can be used as specializers in methods.
264 (reported by Pascal Costanza)
265 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
266 with a type error. (reported by blitz_ on #lisp)
267 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
268 failed with a type error. (reported by Pascal Bourguignon)
269 * bug fix: merging pathnames against defaults with :DIRECTORY
270 starting with '(:RELATIVE :BACK) should preserve the :BACK.
271 (reported by James Y Knight)
272 * bug fix: saving large (>2GB) cores on x86-64 now works
273 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
274 constant index and a (simple-array (signed-byte 32)) array
275 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
276 error (patch by Robert J. Macomber)
277 * feature: TIME now displays the amount of run-time spent in GC
278 * bug fix: The debugger now does a better job of respecting
279 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
280 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
281 workaround for bug 403.)
282 * bug fix: floating point exception handling now works on FreeBSD
283 (thanks to NIIMI Satoshi)
284 * fixed some bugs revealed by Paul Dietz' test suite:
285 ** MISC.641: LET-conversion were not supposed to work in late
287 * improvements to the Win32/x86 port:
288 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
289 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
291 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
292 * new feature: source path information is generated for macro-expansion
293 errors for use in IDE's like Slime (thanks to Helmut Eller)
294 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
295 * bug fix: compiler does not loop forever on an invalid type in
297 * improvement: compilation of most CLOS applications is significantly
299 * optimization: added a limited bytecode compiler for simple toplevel
300 forms, speeding up compilation and FASL loading
301 * bug fix: the statistical profiler now properly distinguishes anonymous
304 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
305 * minor incompatible change: in sbcl-0.9.11 (but not earlier
306 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
307 into subclasses of the finalized class. Now user calls to
308 FINALIZE-INHERITANCE finalize just the one class, and calls by the
309 system return before any subclasses are finalized.
310 * minor incompatible change: The reader no longer ignores errors
311 regarding non-existent packages in #+ and #- feature tests.
312 * new feature: command line options --no-sysinit, --no-userinit to
313 inhibit loading the corresponding init files
314 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
315 for sending data through UDP sockets (thanks to François-René Rideau)
316 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
317 error is signalled instead (thanks to François-René Rideau)
318 * minor incompatible change: Error signalling behaviour of lexical
319 operations violating package locks has changed slightly. Refer to
320 documentation on package locks for details.
321 * enhancement: EVAL can process IF-expressions without resorting to the
323 * bug fix: Some operations involving SIN, COS, or TAN weren't being
324 constant-folded properly due to missing out-of-line functions.
325 (reported by Mika Pihlajamäki)
326 * bug fix: LISTEN sometimes returned T even in cases where no data was
327 immediately available from the stream
328 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
329 were reversed. (reported by Levente Mészáros)
330 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
331 when given a vector displaced to an adjustable array. (reported
333 * bug fix: derivation of float boundaries from numbers outside the
334 appropriate float range (reported by John Wiseman)
335 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
337 * bug fix: precomputing cache entries for generic functions with
338 some subclasses of specializers as yet invalid does not attempt to
339 fill a cache line with a negative offset. (reported by Levente
341 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
342 allow condition class objects as arguments to DOCUMENTATION and
343 (SETF DOCUMENTATION); only find and set documentation for
344 structure names for the STRUCTURE doc-type. (suggested by Gary
346 * improvements to the Win32/x86 port:
347 ** (user-homedir-pathname) and default initialization file
348 locations now know about the user's "Documents and Settings"
349 directory (thanks to Yaroslav Kavenchuk)
350 ** run-program is implemented (thanks to Mike Thomas)
351 ** sockets support (thanks to Timothy Ritchey)
352 ** better backtrace support (thanks to Alastair Bridgewater)
353 ** sb-grovel supported
354 ** asdf-install and sb-posix work somewhat
355 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
356 * improvements to the Solaris/x86 port:
357 ** works on Solaris 11/Solaris Express
358 ** floating-point exception handling support
359 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
360 * fixed some bugs revealed by Paul Dietz' test suite:
361 ** REMOVE-METHOD returns its generic function argument even when
362 the method is not one of the generic functions' methods.
363 ** objects declared as MEMBER types can be admissible arguments to
365 ** printing characters should simply be printed by the FORMAT ~:C
367 ** compiler failure when compiling functions with hairy constant
368 defaults for optional parameters.
369 ** compiler produces wrong code when MAYBE-INLINE-expanding a
370 function, which is already optimized.
372 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
373 * new platform: experimental support for SBCL x86/Darwin, including
374 MacOS X 10.4.5 on Intel.
375 * new feature: Unicode character names are now known to the system
376 (through CHAR-NAME and NAME-CHAR).
377 * new feature: the filesystem location of SBCL's core file is
378 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
379 * minor incompatible change: the contrib modules SB-POSIX and
380 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
381 this change is to make it easier to distribute
382 location-independent binaries.
383 * bug fix: as implied by AMOP, standardized classes no longer have
384 slots named by external symbols of public packages. (reported by
386 * optimization: calling functions via constant symbols -- as in
387 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
388 via the function object as in (FUNCALL #'FOO).
389 * optimization: on x86 and x86-64, the calling convention for the
390 case of dealing with an unknown number of values has been altered
391 to be friendlier to the prediction heuristics implemented,
392 particularly with reference to CALL and RET pairing. (thanks to
393 Alastair Bridgewater)
394 * optimization: on x86, the code for access to thread-local symbol
395 values and binding/unbinding of thread-local symbols is smaller.
396 (thanks to Alastair Bridgewater)
397 * enhancement: CONSTANTP is now able to determine constantness of
398 more complex forms, including calls to constant-foldable standardized
399 functions and some special forms beyond QUOTE.
400 * fixed bug: occasional GC crashes on Solaris/x86
401 * optimization: x86-64 supports stack allocation of results of simple
402 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
403 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
404 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
405 (thanks to James Knight)
406 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
407 by the standard (thanks to Stephen Compall)
409 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
410 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
411 be used for bundling the runtime and the core file into one
412 executable binary. This feature is not currently supported on all SBCL
413 platforms. (thanks to James Bielman and NIIMI Satoshi)
414 * new feature: a generational or ephemeral garbage collector is now
415 the default on the PowerPC platform (both Linux and Darwin). The
416 old Cheney (stop and copy) collector is a build-time option.
417 (thanks to Cyrus Harmon, after Raymond Toy)
418 * minor incompatible change: the method by which SBCL finds its
419 contributed modules has changed; it no longer relies on symbolic
420 links from an $SBCL_HOME/systems directory, but searches directly
421 in the subdirectories of $SBCL_HOME.
422 * enhancement: the dynamic heap size on the Linux/PPC platform is
423 markedly larger, even using the older Cheney garbage collector.
424 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
425 certain complicated string types. (reported by Gary King)
426 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
427 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
428 * fixed bug: DOCUMENTATION on structures no longer signals an
429 error if no structure type of the right name exists. (reported by
431 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
432 applicable non-standard primary or :AROUND method on
433 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
434 no longer cause unbound variable errors. (reported by Kevin Reid)
435 * fixed bug: metacircle resolution in cases where methods have slots
436 added before the slots from STANDARD-METHOD. (reported by Jean
438 * fixed bug: the Power PC assembly code for calling into lisp
439 sometimes computed its return address wrongly (depending on the
440 15th bit of the address, fixed at link time). This used to
441 manifest itself in a segmentation violation while building PCL.
442 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
443 many others over the years)
444 * fixed bug: ROOM no longer reports silly numbers for stack usage if
445 the stack pointer (treated as a signed integer) is negative.
446 (thanks to Peter van Eynde)
448 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
449 * new platform: experimental support for the Windows operating
450 system has been added. (thanks to Alastair Bridgewater)
451 * fixed several bugs in and robustified the PPC FFI (including
452 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
453 * bug fix: allow non-simple string symbol names (reported by Paul
455 * bug fix: interrupt handling on NetBSD (thanks to Richard M
457 * bug fix: saving a core corrupted callbacks on x86/x86-64
458 * bug fix: closed a loophole in metacircularity detection and
459 grounding in the PCL implementation of CLOS.
460 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
461 (reported by tomppa on #lisp)
462 * bug fix: clear the direction flag on Lisp -> C transitions, as
463 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
464 (reported by Andrej Grozin and Hendrik Maryns)
465 * optimization: major improvements to GC efficiency on GENCGC platforms
466 * optimization: faster implementation of EQUAL
467 * optimization: emit more efficient opcodes for some common
468 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
469 * optimization: several other minor code-generation improvements on x86-64
470 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
472 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
473 * minor incompatible change: (SETF CLASS-NAME) and (SETF
474 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
475 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
476 by ANSI as a generic function, and for consistency (SETF
477 GENERIC-FUNCTION-NAME) is treated likewise.
478 * fixed bug #233.b: make constraint propagation notice when a variable
479 value is changed after it is referenced but before it is used
480 * fixed bug #296: no more arbitrary behaviour from filenames with
481 odd characters as --load arguments. (reported by Adam Warner)
482 * fixed bug #390: :CHARACTER-SET pathname components now work as
483 expected. (reported by Tim Daly Jr)
484 * fixed bug #391: complicated :TYPE intersections in slot
485 definitions no longer cause an error in PCL internals.
486 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
487 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
488 returning the number of octets which would be written to the
489 file-stream. (thanks to Robert J. Macomber)
490 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
491 arguments to the internal stream functions. (thanks to David
493 * bug fix: stack exhaustion is now handled on the x86/SunOS
494 platform. (thanks to Daisuke Homma)
495 * bug fix: more accurate ROOM results on GENCGC platforms
496 * optimization: improved type inference for arithmetic-for
497 index variables in LOOP
498 * optimization: faster floating-point SQRT on x86-64
499 * fixed some bugs revealed by Paul Dietz' test suite:
500 ** DOCUMENTATION returns NIL instead of "" for method combinations
501 that don't have a docstring
503 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
504 * minor incompatible change: (SETF CLASS-NAME) and (SETF
505 GENERIC-FUNCTION-NAME) are no longer generic functions, and
506 therefore are not customizeable by user code (as seems to be at
507 least permitted and maybe required by AMOP). As a consolation,
508 however, the SBCL implementation of these functions now calls
509 REINITIALIZE-INSTANCE as specified by AMOP.
510 * bug fix: slot-definition documentation is propagated as per ANSI
511 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
512 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
513 argument, as do eslotd initialization methods. (from Pascal
514 Costanza's "Closer" project)
515 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
516 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
518 * bug fix: it is now possible to have more than one subclass of
519 STANDARD-GENERIC-FUNCTION without causing stack overflow.
520 (reported by Bruno Haible, Pascal Costanza and others)
521 * bug fix: the dependent update protocol now works for generic
522 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
524 * bug fix: condition-class instances corresponding to
525 DEFINE-CONDITION forms are now created eagerly. (reported by
526 Kalle Olavi Niemitalo on comp.lang.lisp)
527 * bug fix: floating point printing is more accurate in some
528 circumstances. (thanks to Simon Alexander)
529 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
530 merged with *DEFAULT-PATHNAME-DEFAULTS*.
531 * bug fix: callbacks on OS X now preserve stack-alignment.
532 (thanks to Cyrus Harmon)
533 * enhancement: the x86-64 disassembler is much better at
534 disassembling SSE instructions. (thanks to Lutz Euler)
535 * enhancement: CHECK-TYPE on a variable now allows type-inference
536 (thanks to Vincent Arkesteijn)
537 * optimization: improved performance of EUC-JP external format.
538 (thanks to NIIMI Satoshi)
539 * optimization: performance improvements to IO on file streams of
540 :ELEMENT-TYPE CHARACTER
541 * optimization: much faster memory allocation on x86-64
542 * optimization: faster garbage collections (latency and throughput)
544 * optimization: faster bignum subtraction and division on x86 and x86-64
545 (thanks to Lutz Euler)
546 * optimization: more accurate type-inference for loops that use a
547 floating point index variable or a negative step.
549 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
550 * bug fix: add a workaround to SBCL looping infinitely at startup on
551 Linux kernels with apparently buggy implementations of personality().
552 (thanks to Svein Ove Aas)
553 * bug fix: Unicode symbols are correctly printed in LDB backtraces
554 (thanks to David Lichteblau)
555 * bug fix: local bindings shadow global symbol macros for
556 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
557 * optimization: non-open coded uses of numeric comparison operators
558 (e.g. >) no longer cons when called with more than one parameter
559 on platforms supporting dynamic-extent allocation.
560 * enhancement: saving cores with foreign code loaded is now supported
561 on MIPS/Linux in addition to the previously supported platforms.
562 * bug fix: FIND-RESTART now tests for activity, not applicability when given
563 a restart object as identifier. (reported by Helmut Eller for CMUCL)
564 * bug fix: division by zero in sb-sprof when no samples were collected
565 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
566 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
567 (thanks to Alexander Kjeldaas)
568 * new feature: ignoring the return values of destructive functions
569 like NREVERSE signals a compile-time style-warning.
570 (thanks to Kevin Reid)
571 * new feature: the alignment of alien structure fields can be
572 explicitly specified. (thanks to Cyrus Harmon)
573 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
574 and dump core on SIGQUIT
576 ** incompatible change: threads do not inherit values of specials
577 from their parents (see manual)
578 ** bug fix: threads stacks belonging to dead threads are freed by the
579 next exiting thread, no need to gc to collect thread stacks anymore
580 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
581 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
582 ** bug fix: dynamic variable and thread start related gc lossage
583 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
585 * fixed some bugs revealed by Paul Dietz' test suite:
586 ** SUBTYPEP is slightly more accurate on heinously complicated
587 CONS types where some of the members have uncertain (in the
588 NIL, NIL sense) type relationships to each other.
590 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
591 no longer purified unless :PURIFY T is explicitly specified.
592 ** Non-purified cores are significantly smaller than before
594 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
595 * new feature: timers based on Zach Beane's excellent timer package
596 * added support for the following external formats: koi8-u,
597 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
598 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
599 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
600 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
601 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
602 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
603 * incompatible change: a threaded SBCL will no longer revert to
604 non-threaded mode on non-NPTL systems, but refuse to start entirely.
605 * bug fix: interrupts are disabled until startup is complete; no
606 more sigsegvs when receiving a signal to soon
607 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
609 * bug fix: add a workaround for the memory randomization features in
610 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
611 workaround will only be in effect on systems with the proc filesystem
613 * bug fix: printing objects of type HASH-TABLE signals a
614 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
616 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
617 have been running for over 50 days. (reported by Gilbert Baumann)
618 * bug fix: the logic for getting names of functions gets less
619 confused when confronded with alternate-metaclass
620 funcallable-instances. (reported by Cyrus Harmon)
621 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
622 consistent, even on internal alternate-metaclass objects.
623 * bug fix: flush closure information collected by physical
624 environment analysis prepass before the main pass. (bug reported
626 * bug fix: compiler pack phase does not modify a hashtable, which is
627 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
628 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
629 may be expanded. (reported by Alexander <malishev> on c.l.l)
630 * bug fix: no more style-warnings when compiling code using LAST
631 under high-SPEED low-SPACE settings. (reported by David Wallin
633 * fixed some incompatibilities between SBCL's MOP and the MOP
635 ** the METAOBJECT class is now implemented;
636 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
637 STANDARD-OBJECT, as required;
638 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
639 now compatible (as required by VALIDATE-SUPERCLASS); there
640 remains a consistency requirement over the presence or absence
641 of the FUNCTION class in the superclass list of finalized
642 classes; see the manual for more details;
643 ** the :AROUND method for COMPUTE-SLOTS on
644 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
645 requested slot ordering.
647 ** bug fix: parent thread now can be gc'ed even with a live
649 ** bug fix: binding a special with PROGV to no value is not
650 the same as that symbol not having been bound (thanks to
652 ** bug fix: binding specials is thread safe (thanks to
654 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
655 and SB-SPROF do not die with 'no handler for signal XX in
656 interrupt_handle_now(..)' anymore
657 ** bug fix: WITH-TIMEOUT works with multiple running threads
658 * fixed some bugs revealed by Paul Dietz' test suite:
659 ** ENSURE-GENERIC-FUNCTION should take a method class object for
660 the :method-class keyword argument.
662 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
663 * new port: the Solaris operating system on x86 processors is now
664 mostly supported, though some rough edges in the environment
665 remain. (thanks to Daisuke Homma)
666 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
667 space for its heap. (thanks to Thiemo Seufer)
668 * optimization: SBCL on MIPS platforms now supports dynamic-extent
669 closures. (thanks to Thiemo Seufer)
670 * minor incompatible change: eof selects abort in the debugger.
671 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
672 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
674 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
675 deprecated, and will go away in a future revision of SBCL.
676 * minor incompatible change: GC-ON and GC-OFF are no longer
677 implemented with a counter, it does not matter how many times gc
678 is switched on or off
679 * bug fix: discriminating functions for generic function classes
680 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
681 make invalid assumptions about method precedence order. (reported
683 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
684 platforms. (thanks to Thiemo Seufer)
685 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
686 * bug fix: correct pathname printing with printer escaping is on.
687 (thanks to Kevin Reid)
688 * bug fix: complex VOP definitions in "user-space" no longer trigger
689 package locks. (reported by Zach Beane)
690 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
691 for funcallable-instance functions, and is no different from
693 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
694 characters in the current readtable. (reported by Nicholas Neuss)
695 * bug fix: SUBTYPEP on various CONS types returns more a more
696 accurate acknowledgment of its certainty.
697 * optimizations: REMOVE-DUPLICATES now runs in linear time on
698 lists in some cases. This partially fixes bug 384.
699 * flush all standard streams before prompting in the REPL and the
701 * bug fix: signal handling and triggering gc do not conflict
702 directly anymore, in particular a high frequency sb-sprof does
703 not prevent gc from running
704 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
705 approximation for timezone and DST information between the
706 universal time epoch and the smallest negative 32-bit time_t.
707 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
708 year 1899 so long as the encoded time is non-negative.
709 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
710 the correct answer for non-constant rotate amounts when performing
711 an inline 32-bit rotation.
713 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
714 there is only one thread in the session
715 ** bug fix: memory leak for streams created in one thread and
716 written to in another
717 ** bug fix: lockup when compiled with gcc4
718 ** bug fix: race that allows the gc to be triggered when gc is
720 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
721 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
723 ** bug fix: finished threads are gc'ed properly
724 * fixed some bugs revealed by Paul Dietz' test suite:
725 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
726 has arguments with a different set of applicable methods from
727 the orignal arguments.
728 ** The type error thrown by MAP now has a correct expected-type
730 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
731 name a compiled function.
732 ** Three MISC tests where a large bignum was improperly coerced to
733 a float that couldn't represent that bignum during type
734 derivation were fixed.
735 ** SUBTYPEP can now handle types involving the negation of a
736 list-form FUNCTION type.
737 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
738 as (COMPLEX (AND RATIO (NOT FIXNUM))).
739 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
741 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
742 * New feature: Experimental support for bivalent streams: streams
743 opened with :element-type :default now allow character and binary
744 (unsigned-byte 8) I/O
745 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
746 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
748 * bug fix: no more highly sporadic "couldn't check whether ~S is
749 readable" when reading a stream and an interrupt hits in the middle
750 of a select system call
751 * compiler better recognizes complex arrays (reported by Eduardo
753 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
754 for variables on SBCL built with linkage-tables. (reported by Luis
756 * various error reporting improvements.
757 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
758 (Thanks to Thiemo Seufer)
759 * bug fix: nested reader invokations work correctly
760 * bug fix: it is possible to have simultaneous references to foreign
761 code and foreign data with the same name.
763 ** added x86-64 support
764 ** incompatible change: the threading api now works with thread
765 objects instead of thread ids
766 ** bug fix: threads are protected from signals and interruption when
767 starting up or going down
768 ** bug fix: a race where an exiting thread could lose its stack to gc
769 ** bug fix: don't halt on infinite error in threads if possible
770 ** fixed numerous gc deadlocks introduced in the pthread merge
771 ** bug fix: fixed thread safety issues in read and print
772 ** bug fix: debugger doesn't hang on session lock if interrupted at
773 an inappropriate moment
774 ** bug fix: run-program is now thread safe(r)
775 ** bug fix: inner with-recursive-lock no longer releases the mutex
776 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
777 * fixed some bugs revealed by Paul Dietz' test suite:
778 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
779 EXPECTED-TYPE slots filled.
780 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
782 ** MAKE-CONDITION accepts classes as type-designators.
783 ** COMPILE may never return NIL.
784 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
785 range before calling Unix time functions
787 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
788 * numerous signal handling fixes to increase stability
789 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
790 * minor incompatible change: we now correctly canonize default
791 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
792 as per the MOP, rather than the historical (INITARG INITFUNCTION
793 INITFORM). (reported by Bruno Haible)
794 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
795 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
796 for more information.
797 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
798 pathname is a directory pathname.
799 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
800 * dynamic space size on PPC has been increased to 768Mb. (thanks to
802 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
803 :METACLASS argument in addition to a class name. (reported by
804 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
805 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
806 (reported by Bruno Haible; patch from Gerd Moellmann)
807 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
809 * bug fix: more cleanups to the floating point exception handling on
810 x86-64 (thanks to James Knight)
811 * bug fix: the compiler does not try to constant fold calls of
812 COERCE and BIT-* functions when they return freshly constructed
813 objects. (reported by Nikodemus Siivola and Paul Dietz)
814 * optimization: improved the MIPS versions of generic (in the
815 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
816 * optimization: direct conversion of (unsigned-byte 32) to floats on
817 the PowerPC platform.
818 * optimization: structure instances with raw slots now use less
819 memory, and probably show better memory locality. (thanks to
821 * optimization: DYNAMIC-EXTENT declarations for lists and closures
822 are treated as requests for stack allocation on the x86-64,
823 Alpha-32, PPC and SPARC platforms.
824 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
825 the wrong file descriptor; implementation of SOCKET-OPEN-P.
826 (thanks to Tony Martinez)
828 ** gcing a dead thread can no longer lead to lockups
829 ** threads block signals until they are set up properly
830 ** errno is no longer shared by threads
831 ** interrupt-thread restores the eflags register on x86
832 ** fixed some lockups due to gc/thread interaction
833 * fixed some bugs revealed by Paul Dietz' test suite:
834 ** invalid dotted lists no longer raise a read error when
836 ** signal an error if a symbol that names a declaration is used
837 as the name of a type, or vice versa
838 ** allow using the (declare (typespec var*)) abbreviation for
839 (declare (type typespec var*)) with all type specifiers
840 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
841 ** always return NIL from PPRINT-POP when OBJECT is NIL
842 ** don't signal errors when pretty-printing malformed LABELS,
843 FLET or MACROLET forms
844 ** declarations in a DOLIST body are also in scope for the
846 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
848 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
851 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
852 * fixed cross-compiler leakages that prevented building a 32-bit
853 target with a 64-bit host compiler.
854 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
855 opened with :IF-EXISTS :OVERWRITE.
856 * fixed bug 281: error for an invalid qualifier in a short-form method
857 combination method is not signalled until the faulty method is called.
858 * bug fix: iteration variable type inferrer failed to deal with open
859 intervals. (reported by Alan Shields)
860 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
861 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
862 or more runtime options were provided to the sbcl binary.
863 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
864 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
865 * optimization: there's now a fast-path for fixnum arguments in the
866 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
867 * optimization: the code generated on x86-64 is more compact thanks
868 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
869 * bug fix: floating-point exception handling now partly works on
870 x86-64. (Thanks to James Knight)
871 * improvement to the MIPS backend from Thiemo Seufer: C-style
872 64-bit long long arguments and return values to alien functions
874 * fixed some bugs revealed by Paul Dietz' test suite:
875 ** the type-error signalled from WARN has a filled-in DATUM slot.
876 ** the type-error required when a stream is not associated with
877 a file has the stream as its datum.
878 ** type-errors on single-floats on x86-64 no longer have
879 :INVALID-OBJECT as the datum
880 ** the type-errors signalled for invalid function names now have
881 a correct expected type
882 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
883 for structures defined with a :TYPE. Documentation strings for
884 typed structures are no longer immediately discarded
885 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
886 broadcast streams and synonym streams. FILE-LENGTH now also works
887 on broadcast streams.
889 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
890 * incompatible change: the --noprogrammer option, deprecated since
891 version 0.7.5, has been removed. Please use the equivalent
892 --disable-debugger option instead.
893 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
895 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
896 inoperational for a while now) has been completely removed.
897 * null lexical environments are now printed as #<NULL-LEXENV>,
898 significantly reducing the amount of clutter in typical backtraces.
899 * documentation on weak pointers, finalization, and after GC hooks
900 has been added to the manual.
901 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
902 as other specialized array types, is much faster. SUBSEQ and
903 COPY-SEQ on such arrays have also been sped up.
904 * optimization: EQL is now more efficient when at least other argument
905 is known to be of type (OR FIXNUM (NOT NUMBER)).
906 * fixed bug: the runtime is now less vulnerable to changes in the
907 size of the SBCL object on OS X, and virtual memory is reserved for
908 all spaces that need to be at a fixed address.
909 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
910 * fixed bug: finalizers and after GC hooks that cause consing are now
912 * fixed bug: compiler error messages and summaries are now printed to
913 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
914 * fixed inference of the upper bound of an iteration variable.
915 (reported by Rajat Datta).
916 * fixed bug 211e: calling local functions with duplicated constant
917 keyword argument no longer causes a bogus style warning about an
919 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
920 ftype declaration to be disregarded. (reported by Dave Roberts)
921 * fixed bug 373: caused by erronous compilation of references to alien
922 variables in the runtime on ppc/darwin.
923 * fixed bug 376: CONJUGATE type deriver.
924 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
925 (reported by Baughn on #lisp)
926 * a cross-compiler bug on non-x86 platforms has been identified and
927 fixed. (thanks to Bruno Haible)
928 * improvements to the MIPS runtime code for increased stability.
929 (thanks to Thiemo Seufer)
930 * increased the maximimum compact environment size to allow
931 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
932 * partial workaround for bug 135: don't name the function we're
933 calling for hairy cases of EVAL, so as not to accumulate one environment
934 entry per call to EVAL. (reported by Kevin Reid)
935 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
936 * optimization: type testing for non-vector arrays should be faster.
937 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
939 * bug fix: setting 31st element of a bit vector to zero did not work
941 * bug fix: redefining a class definition which failed due to a
942 previous accessor / function clash now works (but see BUGS entry
943 #380 for more problems in this area). (thanks to Zach Beane)
944 * the long form of DEFINE-METHOD-COMBINATION disables method group
945 checking when given a single method group with pattern *. (thanks
947 * on x86 compiler supports stack allocation of results of simple
948 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
949 * support for building and running on Mac OS X 10.4 "Tiger" has been added
950 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
951 * fixed some bugs related to Unicode integration:
952 ** the restarts for recovering from input and output encoding
953 errors only appear when there is in fact such an error to
955 * fixed some bugs revealed by Paul Dietz' test suite:
956 ** MISC.549 and similar: late transformation of unsafe type
957 assertions into derived types caused unexpected code
959 ** SCALE-FLOAT type deriver is less wrong.
960 ** type derivers for EXP, LOG and similar functions compute result
961 types for complex arguments better.
962 ** (MISC.563) CONJUGATE type deriver works for very restricted
964 ** out-of-line type testers for character strings are available.
965 ** EQUAL compiler transform understands specialness of objects
967 ** accessing double-floats stored on the stack now works on x86-64.
968 ** debugger internals could sometimes create invalid lispobjs,
969 resulting in GC crashes.
970 ** MISC.548: type check weakening can convert required type into
972 ** initialization forms for bindings are not in scope of free special
975 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
976 * incompatible change: thread support for non-NPTL systems has
977 been removed - locking is buggy and unreliable. A threaded
978 SBCL build will now warn at startup and refuse to create
979 new threads, unless futex support is detected in the kernel
980 * incompatible change: the top level REPL now has only an ABORT
981 restart associated with it, not TOPLEVEL and ABORT as it used to.
982 TOP and TOPLEVEL are now available as debugger commands for
983 returning to the top level.
984 * incompatible change: forms evaluated in the REPL now use the
985 global optimization policy.
986 * incompatible change: user- and system-initialization files are
987 no longer processed with LOAD, but by READ and EVAL; hence the
988 global optimization policy, startup package, readtable, etc,
990 * The .fasl file format number has been incremented because of
991 various incompatible changes.
992 * internal entry point details and argument counts no longer appear
993 in backtraces unless explicitly requested by setting
994 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
995 * built-in and standard functions no longer have names like "top
996 level local call to FOO".
997 * fixed bug 32: functions defined in non-null lexical environments
998 now have more legible printed representation
999 * fixed bug 33: functions defined in non-null lexical environemnts
1000 are now more amenable to inspection by INSPECT.
1001 * workaround for bug 354: XEPs no longer appear in backtraces unless
1002 explicitly requested.
1003 * fixed bug: receiving the signal which results from attempting to
1004 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1005 SIGBUS on other *BSDs) on architectures where the C stack is also
1006 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1007 to debugger confusion or wild instability. (reported by Cheuksan
1009 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1010 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1011 (reported by Lutz Euler)
1012 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1013 compiled code. (reported by Paul Dietz)
1014 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1015 specialized parameter to a method to something that is not TYPEP
1016 the specializer is now possible.
1017 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1018 face of package deletion.
1019 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1020 pathname. (reported by David Tolpin on c.l.l)
1021 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1022 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1023 STRING-STREAM and FILE-STREAM, respectively.
1024 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1025 than previously; in addition, its test suite is now run on build.
1026 (thanks to Luke Gorrie)
1027 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1028 * optimization: added a immediate representation for single-floats
1030 * fixed some bugs revealed by Paul Dietz' test suite:
1031 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1032 ** attempting to create a package with a colliding nickname causes
1033 correctable errors to be signalled.
1034 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1035 ** several x86-64 backend bugs related to sign-extension of immediate
1038 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1039 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1040 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1042 * fixed loading of multiply forward-referenced layouts.
1043 (thanks to Cheuksan Wang)
1044 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1045 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1046 (see COMPILE-FILE documentation for details of :PRINT option)
1047 * fixed bugs 19 and 317: fixed-format floating point printing is
1048 more accurate. This also fixes a bug reported by Adam Warner
1049 related to the ~@F format directive.
1050 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1052 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1053 dispatch table if the from-char is a dispatch macro character.
1054 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1055 by the wordsize no longer ignore the last word. (reported by Lutz
1057 * fixed bug in type checking of dynamic-extent variables. (reported
1059 * optimization: sequence traversal functions use their freedom to
1060 coerce function designators to functions.
1061 * optimization: code with many calls to CLOS methods specialized on
1062 CLOS classes has had redundant type checks removed.
1063 * optimization: added declarations to speed up operations that access
1064 the internal character database (for example STRING-UPCASE)
1065 * optimization: comparison operations between floats and sufficiently small
1066 fixnums no longer create extra rationals
1067 * fixed some bugs related to Unicode integration:
1068 ** portions of multibyte characters at the end of buffers for
1069 character-based file input are correctly transferred to the
1070 start of the buffer at the next read.
1071 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1072 passing it through to OPEN.
1073 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1074 argument given to internal calls to OPEN.
1075 ** the built-in comment readers (introduced by character sequences
1076 ";" and "#|") are more forgiving to encoding errors; they will
1077 STYLE-WARN and then attempt to resync the stream at a character
1078 boundary. (thanks to Teemu Kalvas)
1079 * fixed some bugs in the x86-64 port:
1080 ** Negative short int return values from c-calls are sign-extended
1082 ** The stack is aligned to 16-bytes for c-calls, as required by
1083 the ABI. (thanks to Cheuksan Wang)
1084 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1085 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1086 for enums. (thanks to Vincent Arkesteijn)
1087 ** Multiple small optimizations and bugfixes for floating point
1089 * fixed some bugs revealed by Paul Dietz' test suite:
1090 ** Space, Tab, Linefeed, Return and Page have the invalid
1091 secondary constituent character trait.
1092 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1094 ** WITH-INPUT-FROM-STRING should only update the index place on
1096 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1097 works more reliably.
1098 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1099 with one-dimensional arrays with fill pointers.
1100 ** TYPE-OF failed on a complex with an integer realpart and a
1102 ** compiler failure during type inference for the code of form
1103 (IF (EQL X (THE ...)) ...) (MISC.535).
1105 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1106 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1107 platform. The port supports 61-bit fixnums, large memory spaces
1108 and reloading shared object files.
1109 * enhancement: saving cores with foreign code loaded is now
1110 supported on ppc/Darwin in addition to the previously supported
1112 * enhancement: the statistical profiler now walks deeper into the
1113 call stack for more meaningful call-graphs and accrued time
1114 reports (x86/x86-64 only). It also now reports time spent in
1116 * enhancement: it is now possible to trace most individual methods
1117 of a generic function in addition to tracing the generic function
1119 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1121 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1122 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1123 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1124 produces an error. (thanks to Vincent Arkesteijn)
1125 * bug fix: NAMESTRING on pathnames with :WILD components in their
1126 directories works correctly. (thanks to Artem V. Andreev)
1127 * fixed bug 125: compiler preserves identity of closures. (reported
1129 * bug fixed: functions with &REST arguments sometimes failed with
1130 "Undefined function" when compiled with (DEBUG 3). (reported by
1132 * bug fix: overflow during compiling of setting element of a bit
1133 vector with constant index and value. (reported by Timmy Douglas)
1134 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1135 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1136 * on x86 compiler partially supports stack allocation of dynamic-extent
1138 * GO and RETURN-FROM do not check the extent of their exit points
1139 when compiled with SAFETY 0.
1140 * fixed some bugs related to Unicode integration:
1141 ** encoding and decoding errors are now much more robustly
1142 handled; it should now be possible to recover even from invalid
1143 input or output to the terminal. (thanks to Teemu Kalvas)
1144 ** provided a first cut at implementing STRING-TO-OCTETS and
1145 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1146 ** altered the SB-MD5 contributed module slightly, changing the
1147 interface just enough for it to be supportable for builds where
1148 lisp characters are not eight bits.
1149 * fixed some bugs revealed by Paul Dietz' test suite:
1150 ** the FORMATTER-generated functions for ~V[ conditionals require
1151 the correct number of arguments.
1152 ** READ-FROM-STRING returns the mandated second value when applied
1153 to displaced strings.
1154 ** the #\Rubout and #\Backspace characters are treated as invalid
1155 constituent characters by the tokenizer.
1157 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1158 * new feature: reloading changed shared object files with
1159 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1160 * new feature: references to foreign variables and functions
1161 can now be compiled and loaded before the corresponding shared
1162 object file is loaded, as long as the foreign definitions are
1163 available at runtime.
1164 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1165 supported. (thanks to Dan Debertin)
1166 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1167 just keywords. (thanks to Vincent Arkesteijn)
1168 * fixed bug #331: structure-class instances corresponding to
1169 DEFSTRUCT forms are now created eagerly.
1170 * fixed bug #345: backtraces from calls to undefined functions work
1171 on x86 as well. Related bug #61 is now also partially fixed on x86
1172 (backtraces from throws to unknown catch tags.)
1173 * bug fix: lambda-list parsing is now stricter vrt. order and number
1174 of lambda-list keywords.
1175 * bug fix: as specified by AMOP, an error is signalled if a
1176 class-option appears multiple times in a DEFCLASS form. (reported
1178 * bug fix: RANDOM can be compiled when the compiler derives the type
1179 of its numeric argument as a disjoint set of small integers.
1180 (reported by Paul Dietz)
1181 * bug fix: starting a core saved with shared objects loaded when
1182 those objects are not available no longer causes threaded SBCL to
1183 hang. (reported by Sean Ross)
1184 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1186 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1187 argument, which must always be NIL. (reported by Kalle Niemitalo)
1188 * bug fix: printing 1.0d+23 no longer results in an error.
1189 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1190 * bug fix: structure slot setters preserve evaluation order. (thanks
1192 * fixed some bugs related to Unicode integration:
1193 ** RUN-PROGRAM can allow its child to take input from a Lisp
1194 stream. (reported by Stefan Scholl)
1195 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1196 locales. (reported by Ken Causey)
1197 * fixed some bugs revealed by Paul Dietz' test suite:
1198 ** INCF, DECF and REMF evaluate their place form as specified in
1200 ** FORMATTER expands ~{ ~} iteration directives with V or #
1201 parameters correctly.
1202 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1203 consequent uses no arguments correctly.
1204 ** the system has a partial understanding of the (COMPLEX RATIO)
1206 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1209 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1210 * new feature: a build-time option (controlled by the :SB-UNICODE
1211 keyword feature, enabled by default) for building the system with
1212 support for the entire 21-bit character space defined by the
1214 * new feature: the system now has rudimentary external-format
1215 support; the primary user-visible change at this time is that
1216 characters with the high bit set (such as lower-case-e-acute) will
1217 print correctly to a terminal in a UTF-8 environment.
1218 * minor incompatible change: BASE-CHAR no longer names a class;
1219 however, CHARACTER continues to do so, as required by ANSI.
1220 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1221 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1222 has been moved to the SB-EXT package (temporarily re-exported from
1224 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1225 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1227 * fixed bug #351: better error-handlind and reporting for malformed
1229 * fixed bug #350: bignum-printing is now more memory-efficient,
1230 allowing printing of very large bignums, eg. (expt 2 10000000).
1231 (reported by Bruno Haible)
1232 * fixed bug #302: better primitive-type selection for intersection
1234 * fixed bug #308: non-graphic characters now all have names, as
1235 required. (reported by Bruno Haible)
1236 * bug fix: redefining a class with different superclasses now correctly
1237 removes it from the direct-subclasses of its previous superclasses.
1238 (reported by David Morse)
1239 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1240 new value now works. (reported by Bruno Haible)
1241 * bug fix: correct canonicalization of multiple non-standard slot
1242 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1243 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1244 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1245 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1246 now exists, an signals an error.
1247 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1248 during macroexpansion for non-iteration variables as well. (reported
1249 by Bruno Haible for CMUCL)
1250 * bug fix: Cyclic structures and unprintable objects in compiler
1251 messages no longer cause errors. (reported by Bruno Haible)
1252 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1253 and READ-FROM-STRING all now return a primary value of NIL if
1254 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1255 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1256 (reported by Bruno Haible for CMUCL)
1257 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1258 do not designate a condition. (reported by Bruno Haible for
1260 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1261 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1262 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1263 permitting resolution in favour of any of the conflicting symbols.
1264 (reported by Bruno Haible for CMUCL)
1265 * bug fix: EQUAL compiler optimizations is less aggressive on
1266 strings which can potentially compare true despite having distinct
1267 specialized array element types.
1268 * bug fix: unit enumerations can be defined without dividing by
1269 zero. (thanks to Vincent Arkesteijn)
1270 * FORMAT compile-time argument count checking has been enhanced.
1271 (report from Bruno Haible for CMUCL)
1272 * a partial workaround for the bug 262: the compiler does not try to
1273 inline-expand a local function doing RETURN-FROM from a deleted
1274 BLOCK. (thanks to Peter Denno for the bug report and to David
1275 Wragg for the simple test case)
1276 * fixed some bugs revealed by Paul Dietz' test suite:
1277 ** RENAME-PACKAGE allows all package designators as new package
1279 ** constraint propagation and lambda variable substitution are
1280 more cautious in dealing with partially deleted code.
1281 ** compiler sometimes lost reoptimization passes.
1282 ** CERROR, given a condition as condition designator, passes its
1283 remaining arguments to the continue format control without
1285 ** Case-altering FORMAT directives work correctly on non-ASCII
1287 ** The REAL type specifier handles bounds outside the floating
1288 point ranges without signalling FLOATING-POINT-OVERFLOW.
1289 ** Functions with IR1-transformations can create intercomponent
1290 references to global functions.
1291 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1293 ** FORMAT ~R treats a nil value for its first parameter correctly.
1295 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1296 * enhancement: saving cores with foreign code loaded is now
1297 supported on x86/NetBSD and sparc/Linux in addition to the previously
1298 supported platforms.
1299 * bug fix: on some platforms repeated installations caused multiple
1300 copies of HTML documentation to be installed -- should not happen
1301 any more. (reported by Stefan Scholl)
1302 * bug fix: parsing self-recursive alien record types multiple times
1303 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1304 original patch by Helmut Eller for CMUCL)
1305 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1306 (thanks to Richard Kreuter)
1307 * bug fix: defining classes whose accessors are methods on existing
1308 generic functions in other (locked) packages no longer signals
1309 bogus package lock violations. (reported by François-René Rideau)
1310 * bug fix: special variables as DEFMETHOD parameters no longer have
1311 associated bogus type declarations. (reported by David Wragg and
1313 * bug fix: read-write consistency on streams of element-type
1314 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1315 * bug fix: redefiniton of the only method of a generic function with
1316 no DEFGENERIC no longer emits a full WARNING. In addition,
1317 redefinition of generic functions with no DEFGENERIC to an
1318 incompatible lambda list now signals an error. (thanks to Zach
1320 * bug fix: DEFGENERIC now works even when there's a function of the
1321 same name in an enclosing lexical environment. (thanks to Zach
1323 * fixed compiler failure, caused by instrumenting code during
1324 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1325 * optimization: added loop analysis and improved register allocation
1326 * fixed some bugs revealed by Paul Dietz' test suite:
1327 ** POSITION on displaced vectors with non-zero displacement
1328 returns the right answer.
1329 ** (SIMPLE-STRING) is a valid type specifier for sequence
1331 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1333 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1334 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1336 ** The justification version of the FORMAT ~< directive treats
1337 non-zero minpad parameter correctly.
1339 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1340 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1341 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1342 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1343 the supported interface.
1344 * new feature: Single-stepping of code compiled with DEBUG 2 or
1345 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1346 * new feature: saving cores with foreign code loaded is now
1347 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1348 Timothy Moore's work for CMUCL)
1349 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1350 parameters to * instead of NIL if no initform is supplied.
1351 (reported by Johan Bockgaard)
1352 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1353 correctly when FUNCALL appears as the car of the form. Note:
1354 despite this FUNCALL forms are not currently subject to
1355 compiler-macro expansion. (port of Raymond Toy's fix for the
1356 same from CMUCL, reported by Johan Bockgaard)
1357 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1358 (thanks for Teemu Kalvas)
1359 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1360 case instead of terminating the iteration (thanks for Julian
1361 Squires, Sean Champ and Raymond Toy)
1362 * bug fix: incorrect expansion of defgeneric that caused a style
1363 warning. (thanks for Zach Beane)
1364 * bug fix: slot accessor effective method computation works properly
1365 for classes with multiple non-standard applicable methods on
1366 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1367 * on x86 compiler supports stack allocation of results of LIST and
1368 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1369 CMUCL implementation by Gerd Moellmann)
1370 * fixed some bugs revealed by Paul Dietz' test suite:
1371 ** FORMAT strings with both the ~<~:;~> form of the justification
1372 directive and pretty-printing directives cause an error.
1374 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1375 * incompatible change: the internal functions
1376 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1377 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1378 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1379 instead of the old functions.
1380 * new feature: on platforms where "dladdr" is available foreign
1381 function names now appear in backtraces. (based on Helmut Eller's
1383 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1384 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1386 * documentation: ASDF manual is now distributed with SBCL.
1387 * bug fix: SBCL can now load its contributed modules with REQUIRE
1388 even if the system-provided entries have been removed from
1389 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1391 * bug fix: backtraces involving undefined functions or assembly
1392 routines are more informative. (thanks to Brian Downing)
1393 * bug fix: mutually referent alien structures now work correctly.
1394 (reported by Rick Taube)
1395 * bug fix: structures defined by WITH-ALIEN can be referred to
1396 within other definitions in the same WITH-ALIEN.
1397 * bug fix: division operators (MOD, TRUNCATE and the like) with
1398 constant zero divisors and integer dividends no longer generate
1400 * bug fix: provide default methods for INPUT-STREAM-P and
1401 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1402 * bug fix: improve the detection and resolution of MOP metacycles
1403 (where effective method computation depends on the generic function
1404 having its effective method computed). (reported by Bruno Haible)
1405 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1406 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1407 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1408 * bug fix: pathnames with relative directory components can be
1409 represented relative to default pathnames.
1410 * optimization: in taking the GCD of bignums, reduce the two bignums
1411 to approximately the same size (using Euclid's algorithm) before
1412 applying the more sophisticated binary GCD. (thanks to Juho
1414 * optimization: COUNT on bitvectors now operates word-at-a-time.
1415 * optimization: ASH with a positive, but not necessarily constant,
1416 (leftwards) shift, when in a modular context, is compiled to a
1418 * fixed some bugs revealed by Paul Dietz' test suite:
1419 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1420 if the corresponding argument is NIL.
1421 ** FORMAT directives accepting a minpad parameter treat negative
1423 ** literal commas as character parameters to FORMAT directives are
1425 ** literal spaces directly after ~<Newline> directives within a
1426 format-logical-block (~:< ~@:>) do not induce :FILL-style
1427 conditional newlines.
1428 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1429 as specified: it no longer includes conditional newlines).
1430 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1432 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1433 :PER-LINE-PREFIX argument does not evaluate to a string.
1435 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1436 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1437 the manual for details; for now, package locks can be disabled by
1438 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1439 if no major problems are found then it is likely that they will be
1440 compiled in unconditionally.
1441 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1442 unsupported operators on all platforms. To load a shared library
1443 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1444 object file, link it into a shared library outside of SBCL and
1445 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1447 * bug workaround: ROOM T and the GC were not working together
1448 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1449 reporting facility aren't preserved. That reporting has been
1450 disabled, so now until and unless someone figures out how to make it
1451 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1452 * minor incompatible change: as threatened around sbcl-0.8.0, the
1453 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1454 The symbols are also exported from SB-PCL for backwards
1455 compatibility, but more so than before SB-PCL should be treated as
1456 an implementation-internal package.
1457 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1459 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1460 It is known as of this release not to work on the Alpha, however.
1461 * fixed bug #167: errors signalled due to illegal syntax in method
1462 bodies are now more legible.
1463 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1464 designators and can hence be used with TYPEP.
1465 * fixed bug #333: CHECK-TYPE now ensures that the type error
1466 signalled, if any, has the right object to be accessed by
1467 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1468 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1469 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1471 * fixed bug #334: programmatic addition of slots using specialized
1472 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1473 and :ALLOCATION :CLASS slots.
1474 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1475 float exponents. (rereported by Peter Seibel)
1476 * fixed a bug: #\Space (and other whitespace characters) are no
1477 longer considered to be macro characters in standard syntax by
1478 GET-MACRO-CHARACTER.
1479 * fixed bug: initialization of condition class metaobjects no longer
1480 causes an instance of the condition to be created. (reported by
1482 * fixed bug: it is now possible to have slots such that
1483 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1484 description is neither :INSTANCE nor :CLASS.
1485 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1486 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1487 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1488 non-standard SLOT-DEFINITION-ALLOCATION values.
1489 * fixed bugs: various race conditions handling exiting threads.
1490 CL-PPCRE's thread torture test now passes.
1491 * fixed arguably-a-bug: GC time proportional to number of threads in
1492 system even when most of them are idle
1493 * optimization: improved performance of BIT and SBIT on bit-vectors.
1494 * .fasl file incompatibility: The fasl file version number has
1495 been incremented because of changes associated with package locks.
1497 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1498 * minor incompatible change: the system no longer provides
1499 optimization hints (conditions which are TYPEP
1500 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1501 mode; these hints are still emitted when higher SPEED optimization
1503 * new contrib module: a sampling profiler (profiling by statistical
1504 sampling, rather than by instrumenting functions) is available as
1505 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1506 * the behaviour of the standard function ED is now customizeable by
1507 third parties through a hook variable: see ED's documentation
1508 string for information on the protocol.
1509 * the compiler no longer emits efficiency notes for (FUNCALL X)
1510 when the type of X is uncertain under default optimization
1512 * fixed bug 276: mutating a binding of a specialized parameter to a
1513 method to something that is not TYPEP the specializer is now
1515 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1516 exhibit the required behaviour on the x86 platform. (thanks to
1517 Peter van Eynde, Eric Marsden and Bruno Haible)
1518 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1519 even for difficult arguments. (reported by Peter Graves)
1520 * fixed bug 141a: the backquote printer now descends quoted
1522 * fixed another bug in backquote printing: no more destructive
1523 modification of the form's list structure. (reported by Brian
1525 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1526 move between its address being taken and the call to
1527 interrupt_thread, fixing a crashing race condition.
1528 * the SB-POSIX contrib implementation has been adjusted so that it
1529 no longer exhibits ridiculously poor performance when constructing
1530 instances corresponding to C structs.
1532 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1533 * minor incompatible change: the sb-grovel contrib now treats C
1534 structures as alien (in the sense of SB-ALIEN) objects rather than
1535 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1536 has implications for memory management of client code
1537 (sb-grovel-returned objects must now be manually managed) and for
1538 type safety (alien objects now have full types).
1539 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1540 used to control emission of compiler diagnostics, rather than the
1541 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1542 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1543 quality should be considered deprecated.
1544 * install.sh now installs the user manual as well
1545 * (not quite a new documentable feature, but worth considering in
1546 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1547 beginnings of a semantically meaningful condition hierarchy is
1548 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1550 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1551 designator as the defaults argument.
1552 * fixed bug: Displaced arrays whose displaced-to array has become
1553 too small now cause ARRAY-DIMENSION to signal an error, providing
1554 for safer bounds-checking. (reported by Bruno Haible)
1555 * fixed bug: DEFCLASS slot definitions with identical :READER and
1556 :WRITER names now signal a reasonable error. (reported by Thomas
1558 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1560 * fixed bug: Invalid slot specification errors now print correctly.
1561 (thanks to Zach Beane)
1562 * fixed bug 320: Shared to local slot value transfers in class
1563 redefinitions now happen corrently from superclasses as
1564 well. (reported by Bruno Haible)
1565 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1567 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1568 improper lists correctly. (reported by Bruno Haible)
1569 * fixed bug 313: source-transform for <fun-name> was erroneously
1570 applied to a call of a value of a variable with name <fun-name>.
1571 (reported by Antonio Menezes Leitao)
1572 * fixed bug 307: The obsolete instance protocol ensures that
1573 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1574 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1575 remove dead unknown-values globs from the middle of the stack.
1576 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1577 easier to resume long computations after using *BREAK-ON-SIGNALS*
1578 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1579 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1580 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1581 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1582 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1583 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1585 * fixed a (fairly theoretical) bug in string printing: if
1586 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1587 does not have array-element-type equal to the most general string
1589 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1590 function name. (thanks to Nikodemus Siivola)
1591 * fixed bug: compile-time format string checker failed on
1592 non-closed ~{. (reported by Thomas F Burdick)
1593 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1594 don't warn on legal loop code involving more than one aggregate
1595 boolean. (thanks to Nikodemus Siivola)
1596 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1597 in keyword position to MAKE-PACKAGE was not being reported as
1599 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1600 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1602 * fixed bugs 280 and 312: the checking for multiple definitions in a
1603 file is less likely to become confused by uses of inline
1605 * fixed bug: the #S reader macro performs the keyword coercion
1606 specified for slot names. (reported by Kalle Niemitalo)
1607 * fixed bug: lambda lists may contain symbols whose names start with
1608 & but are not lambda-list-keywords; their occurrence triggers a
1610 * fixed bug 321: define-method-combination argument lambda lists do
1611 not cause invalid code to be generated when &optional or &aux
1612 variables have default values. (reported by Bruno Haible)
1613 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1614 have CLOS classes; this appears also to have fixed reported
1615 instability in stack exhaustion detection.
1616 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1617 MUFFLE-WARNING when no associated restart is present is now
1619 * optimization: rearranged the expansion of various defining macros
1620 so that each expands into only one top-level form in a
1621 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1623 * optimization: used a previously little-used slot in symbols to
1624 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1626 * fixed some bugs revealed by Paul Dietz' test suite:
1627 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1629 ** Fixed an optimization bug related to inheritance of initforms
1630 from local to shared slots.
1631 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1632 ** CAST optimizer forgot to flush argument derived type.
1633 ** print/read consistency on floats is now orders of magnitude
1634 more likely. (thanks also to Bruno Haible for a similar report
1636 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1637 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1638 for objects of type REAL. Make it so.
1639 ** SXHASH is specified (infelicitously) to respect similarity,
1640 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1641 it so. (thanks to Markus Ziegler)
1642 ** on the Alpha, the compiler succeeds in compiling functions
1643 returning a known number of arguments greater than 63.
1644 ** fixed handling of invalid NIL arguments in keyword position
1646 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1648 ** provided a readably-printable representation for RANDOM-STATE
1650 ** ensured that pathnames, where they have a namestring, always
1651 print using #P"..." syntax.
1653 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1654 * Support for the forthcoming 2.0 version of the NetBSD kernel
1655 running on x86 hardware has been added. (thanks to Perry
1656 E. Metzger most immediately, and others for their past work)
1657 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1658 current release version; SBCL's OpenBSD support had been broken
1659 since about the time of OpenBSD's switch to ELF binary format.)
1660 * [placeholder for DX summary]
1661 ** user code with &REST lists declared dynamic-extent, under high
1662 speed or space and low safety and debug optimization policy.
1663 * The manual has been converted to Texinfo format and the debugger
1664 chapter from the cmucl manual has been added.
1665 * A facility has been added to extract documentation strings from
1666 sbcl and store them as Texinfo-formatted snippets for inclusion in
1667 the manual (via Texinfo's @include directive)
1668 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1669 the test case to Dave Roberts)
1670 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1671 pointers. (reported by Sean Ross)
1672 * bug fix: PROFILE output is printed nicely even for large numerical
1673 values. (thanks to Zach Beane)
1674 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1675 greater than 32 handle EOF correctly.
1676 * bug fix: on X86 an immediate argument of the IMUL instruction is
1677 correctly printed in disassembly. (thanks to Lutz Euler)
1678 * bug fix: class slots in redefined classes preserve their old
1679 values. (thanks to Bruno Haible and Nikodemus Siivola)
1680 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1681 succeeds. (reported by Marco Baringer)
1682 * fixed some bugs revealed by Paul Dietz' test suite:
1683 ** READ-SEQUENCE now works on ECHO-STREAMs.
1684 ** RATIONALIZE works more according to its specification. (thanks
1687 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1688 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1689 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1690 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1691 should matter to you only if you rebind the printer control
1692 variables and then find you want different bindings in the
1693 debugger than in the ordinary execution of your program.)
1694 * The runtime build system has been tweaked to support building
1695 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1696 assembler and linker. (thanks to Nikodemus Siivola)
1697 * Unbound, undefined, undeclared variables now trigger full
1698 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1699 more often programmer error than deliberate exploitation of undefined
1701 * optimization: the hash algorithm for strings has changed to one
1702 that is less vulnerable to spurious collisions. (thanks to Juho
1704 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1705 needless bounds checking. (thanks to Juho Snellman)
1706 * optimization: implemented multiplication as a modular
1707 (UNSIGNED-BYTE 32) operation on the PPC backend.
1708 * fixed some bugs revealed by Paul Dietz' test suite:
1709 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1711 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1712 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1713 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1715 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1717 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1719 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1720 their output stream on EOF from read.
1721 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1722 have been read to end-of-file.
1723 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1725 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1726 description of determination of which consecutive characters
1728 ** Printing the "Space" character with escaping on now yields "#\\ ",
1729 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1730 ** Reading floating-point numbers with *READ-BASE* set to a number
1731 less than 10 works correctly.
1732 ** Reading floating-point numbers with *READ-BASE* set to a number
1733 more than 10 works correctly.
1734 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1735 the readtable currently in effect.
1737 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1738 * minor incompatible change: parsing of namestrings on a physical
1739 (Unix) host has changed; numbers after the final #\. in a
1740 namestring are no longer interpreted as a version field. This is
1741 intented to be largely invisible to the user, except that the
1742 meaning of the namestring "*.*.*" has changed: it now refers to a
1743 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1744 should usually be replaced by
1745 (make-pathname :name :wild :type :wild :version :wild)
1746 with the added benefit that this is more likely to be portable.
1747 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1748 option to OPEN now signals an error if the file being opened
1749 exists; this may have an impact on existing code.
1750 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1751 signals received, on the PowerPC platforms (both Linux and
1752 Darwin). (thanks to Pierre Mai for pointing out the location of
1754 * several fixes on OS X: The system now builds and runs cleanly on
1755 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1756 (thanks to Brian Mastenbrook)
1757 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1758 second-resolution: integer multiples of 1/3600 between -24 and 24.
1759 (thanks to Vincent Arkesteijn)
1760 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1761 type when called with 1 argument; PEEK-CHAR checked type of
1762 PEEK-TYPE only after having read first character from a
1763 stream. (reported by Peter Graves)
1764 * bug fix: the garbage collector now has much better locality
1765 behaviour, and in particular no longer treats all memory as being
1766 exhausted when many small objects point to each other in a deeply
1768 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1769 recognized as being TYPEP their class.
1770 * bug fix: the PUSHNEW documentation string has been corrected.
1771 (thanks to Vincent Arkesteijn)
1772 * bug fix: defaulting of the value for the last of an atypically
1773 large number of multiple values being bound was not being
1774 performed correctly on the Alpha or PPC platforms
1775 * optimization: implemented multiplication as a modular
1776 (UNSIGNED-BYTE 32) operation on the x86 backend.
1777 * optimization: SEARCH on simple-base-strings can now be open-coded.
1778 (see also contrib/compiler-extras.lisp for inspiration for
1779 teaching the compiler about the Boyer-Moore algorithm).
1780 * value, returned by MAX (and MIN) called with several EQUALP, but
1781 not EQL, arguments now does not depend on compiler settings.
1782 * fixed some bugs revealed by Paul Dietz' test suite:
1783 ** in stack analysis liveness information is propagated from
1784 non-local entry points.
1785 ** pathwise CAST removing failed when the CAST node did not start
1787 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1788 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1790 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1791 host is already defined.
1792 ** RENAME-FILE works on streams instead of signalling an internal
1794 ** PEEK-CHAR uses the current readtable when determining whether
1795 or not a character is whitespace.
1796 ** MERGE-PATHNAMES handles the case when the pathname does not
1797 specify a name while the default-pathname specifies a version.
1798 ** Pathnames now stand a better chance of respecting print/read
1800 ** Attempting to use standardized file system operators with a
1801 pathname with invalid :DIRECTORY components signals a
1803 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1805 ** DIRECTORY on logical pathnames is more correct.
1806 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1807 signal a TYPE-ERROR if their argument is not a stream.
1808 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1809 designator argument does not designate a stream.
1810 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1811 examining the synonym.
1812 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1814 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1815 element-type larger than ([UN]SIGNED-BYTE 32).
1817 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1818 * When built with the :SB-FUTEX feature, threaded builds now take
1819 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1820 for faster/more reliable mutex and condition variable support.
1821 * Incompatible change (but one you probably shouldn't have been using
1822 anyway): the interface and code for arbitrating between multiple
1823 threads in the same user session has been redesigned.
1824 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1825 error when called without an explicit environment argument.
1826 (thanks to Nikodemus Siivola)
1827 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1828 confused about their position. (thanks to Adam Warner and Gerd
1830 * bug fix: Pretty printing backquoted forms with unquotations in the
1831 argument list position of various code constructs such as LAMBDA
1832 now works correctly. (reported by Paul Dietz)
1833 * bug fix: Pretty printing unquotations no longer loses all
1834 stream position information.
1835 * optimization: performance of string output streams is now less
1836 poor for multiple small sequence writes.
1837 * optimization: performance of CSUBTYPEP in the presence of complex
1838 expressions involving CONS and NOT many times has been improved.
1839 (reported by Paul Dietz)
1840 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1842 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1843 streams for the REPL, for the debugger, and so on. (thanks to
1845 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1846 * fixed some bugs revealed by Paul Dietz' test suite:
1847 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1848 is ignored if it is too small, rather than propagating through
1849 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1850 ** extremely complex negations of CONS types were not being
1851 sufficiently canonicalized, leading to inconsistencies in
1853 ** VALUES tranformer lost derived type.
1855 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1856 * fixed a bootstrapping bug: the build process no longer assumes
1857 that the various BOOLE-related constants have the same value in
1858 host and target lisps. (noted by Paul Dietz' test suite on an
1859 SBCL binary built from CLISP)
1860 * The system can now be dynamically linked on the MIPS platform,
1861 which enables dynamic loading of foreign code from Lisp. (thanks
1862 to Ralf Baechle for discussions on the MIPS ABI)
1863 * The system now records debugging information for its own source
1864 files in a filesystem-position-independent manner, relative to
1865 the "SYS" logical host.
1866 * fixed a compiler bug: MV-LET convertion did not check references
1867 to the "max args" entry point. (reported by Brian Downing)
1868 * tweaked disassembly notes to be less confident about proclaiming
1869 some instruction as an LRA. (thanks to Brian Downing)
1870 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1871 now each have their own history, command character, and other
1872 characteristics. (thanks to David Lichteblau)
1873 * fixed some bugs revealed by Paul Dietz' test suite:
1874 ** compiler failure in compiling LOGAND expressions including a
1876 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1877 shift greater than 32.
1878 ** FLUSH-DEST did not mark blocks for type check regeneration.
1879 ** HANDLER-CASE failed to accept declarations in handler clauses
1880 in some circumstances.
1882 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1883 * New code in contrib/sb-introspect (still probably not entirely
1884 stable yet) provides some support for smart Lisp development
1885 environments like SLIME.
1886 * The conditions signalled for errors occurring when loading .fasl
1887 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1888 in a way which should help ASDF recover gracefully.
1889 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1890 stuff has been cleaned up. If you code contrib/ stuff, this might
1891 affect you, and you can look at contrib/README, contrib/STANDARDS,
1892 and/or the 0.8.4.27 diff to check.
1893 * In full calls the compiler now does not generate checks for declared
1894 argument types for all arguments.
1895 * various threading fixes
1896 ** and some experimental patches which didn't make it into
1897 the main tree for this release, but which are shipped in
1898 contrib/experimental-thread.patch as a possible fix for some
1899 failures (deadlock, spinning...) in GC-intensive multithreaded
1901 * fixed PPC build problem (source code incompatibility of different
1902 library versions): added offsetof() hackery which attempts to divine
1903 where glibc maintainers put uc_mcontext today
1904 * fixed bug 282: compiler does not trust type assertions while passing
1905 arguments to a full call.
1906 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1907 &OPTIONAL VALUES type parameter.
1908 * fix bug 214: algorithm for noting rejected templates is now more
1909 similar to that of template seletion. (also reported by rydis on
1911 * fixed bug 141b: printing backquoted information readably and prettily
1912 inserts a space where necessary.
1913 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1914 (CHARACTER 10) are now reported as errors, rather than propagated
1915 as unknown types. (reported by piso on #lisp)
1916 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1917 with values NIL and :ERROR. (thanks to Milan Zamazal)
1918 * fixed bug 191c: CLOS now does proper keyword argument checking as
1919 described in CLHS 7.6.5 and 7.6.5.1.
1920 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1921 longer raise an error; further, using a list as a for-as-arithmetic
1922 counter now raises a meaningful error.
1923 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1924 now understood by sequence creation functions such as MAKE-SEQUENCE
1926 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1927 a STRING-INPUT-STREAM.
1928 * compiler enhancement: SIGNUM is now better able to derive the type
1930 * type declarations inside WITH-SLOTS are checked. (reported by
1932 * fixed some bugs revealed by Paul Dietz' test suite:
1933 ** incorrect optimization of TRUNCATE for a positive first
1934 argument and negative second.
1935 ** compiler failure in let-convertion during flushing dead code.
1936 ** compiler failure while deriving type of TRUNCATE on an
1937 interval, containing 0.
1938 ** ASH of a negative bignum by a negative bignum count now returns
1940 ** intersection of CONS types now canonicalizes properly, fixing
1941 inconsistencies in SUBTYPEP.
1943 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1944 * incompatible change: The --disable-debugger command line
1945 option now clobbers the debugger at a more fundamental
1946 level, by redefining #'INVOKE-DEBUGGER instead of by
1947 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1948 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1949 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1950 enter the debugger REPL and then suffer recursive errors
1951 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1952 while under the new system, BREAK in --disable-debugger mode
1953 terminates the system just as an unhandled error would.
1954 * fixed compiler performance when processing loops with a step >1;
1955 * bug fix: DOCUMENTATION now retrieves generic function
1956 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1957 support has been systematized, and now supports the methods
1958 specified by ANSI, along with a default method and a method for
1959 slot documentation. (reported by Nathan Froyd)
1960 * bug fix: effective methods associated with a generic function are
1961 no longer cached over a change of that generic function's method
1962 combination. (reported by Andreas Fuchs)
1963 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1964 names a non-existent directory. (thanks to Andreas Fuchs)
1965 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1966 the PPC platform, lead to stack corruption; this has been fixed.
1967 (reported by Rainer Joswig)
1968 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
1969 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
1970 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
1971 arithmetic in general, is now much more reliable on the PPC
1973 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
1974 platform now returns the right answer.
1975 * optimization: restored some effective method precomputation in
1976 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1977 precomputation is now tunable.
1978 * optimization: compiler-internal data structure use has been
1979 reviewed, and changes have been made that should improve the
1980 performance of the compiler by about 20%.
1981 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1982 simple-base-strings and simple-bit-vectors is improved.
1983 * optimization: the optimization of 32-bit logical and arithmetic
1984 functions introduced in version 0.8.3 on the x86 has been
1985 implemented on the mips, ppc and sparc platforms; an
1986 implementation of the same facility, but for 64-bit arithmetic,
1987 has been added for the alpha.
1988 * microoptimization: the compiler is better able to make use of the
1989 x86 LEA instruction for multiplication by constants.
1990 * bug fix: in some situations compiler did not report usage of
1991 generic arithmetic in (SPEED 3) policy.
1992 * bug 145b fix: compiler used wrong type specifier while converting
1993 MEMBER-types to numeric.
1994 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1996 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1997 index argument now works properly on the Alpha platform.
1998 * bug fix: floating point exception treatment on the Alpha platform
2000 * bug fix: FILE-POSITION works much better on string input and
2001 output streams. (thanks to Nikodemus Siivola)
2002 * bug fix: many threading/garbage collection symptoms sorted.
2003 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2004 might be pseudo-atomic.
2005 * internal change: Stopping for GC is now done with signals not
2006 ptrace. GC is now done in whichever thread wanted it, instead of
2008 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2010 * bug fix: result form in DO is not contained in the implicit
2012 * incompatible change: ICR structure is changed; the value part of
2013 CONTINUATION is now called LVAR; corresponding functions are
2014 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2015 * added type deriver for ISQRT (thanks to Robert E. Brown).
2016 * bug fix: better support for loading from the command line when an
2017 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2019 * fixed some bugs revealed by Paul Dietz' test suite:
2020 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2021 ** ROUND and FROUND now give the right answer when given very
2022 small float arguments.
2023 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2025 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2026 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2027 ** LCM should return a non-negative integer.
2028 ** PARSE-INTEGER returned the index of a terminator instead of the
2029 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2030 ** PARSE-INTEGER returned an incorrect index being applied to a
2032 ** LCM with two arguments of 0 returns 0 rather than signalling
2034 ** unsigned addition of a 32-bit constant with the high bit set no
2035 longer causes an internal compiler error on the x86.
2036 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2037 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2038 with negative last argument.
2039 ** byte specifiers with zero size and position no longer cause
2040 an error during type derivation.
2041 ** bignum multiplication on the Alpha platform now returns the
2043 * porting: The system now builds on SuSE AMD64, although it still
2044 generates a 32-bit binary.
2045 * .fasl file incompatibility: The fasl file version number has
2046 been incremented (because of the changes to internal compiler
2047 data structures referred to above).
2049 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2050 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2051 more accurately, on the Darwin kernel running on PowerPC hardware.
2052 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2053 * Compiler code deletion notes now signal a condition of type
2054 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2055 an associated MUFFLE-WARNING restart.
2056 * The compiler now performs limited argument count validation of
2057 constant format strings in FORMAT, and where appropriate in ERROR,
2058 CERROR and WARN. (thanks to Gerd Moellmann)
2059 * New ASDF-INSTALL contrib can be used for automatic download and
2060 installation of third-party Lisp code from CCLAN or other sites
2062 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2063 which forces another thread to execute a function supplied by the
2065 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2066 now accept and act upon their :ELEMENT-TYPE keyword argument.
2067 (reported by Martin Atzmueller, Edi Weitz)
2068 * bug fix: FILE-POSITION now accepts position designators up to
2069 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2070 is the greater. (thanks to Patrik Nordebo)
2071 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2072 Kalle Olavi Niemitalo)
2073 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2074 printable. (reported by Eric Marsden)
2075 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2076 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2077 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2078 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2079 (thanks to Stig Sandoe)
2080 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2081 UNREAD-CHAR now correctly includes the unread character in the
2082 target sequence. (thanks to Gerd Moellmann)
2083 * bug fix in threaded builds: the system can now be suspended and
2084 resumed by shell job control with minimal disruption.
2085 * bug fixes in times and timezones >2038AD
2086 * better handling of "where is GNU make?" problem in build scripts
2087 (thanks to Nikodemus Siivola)
2088 * new optimization: inside a named function any reference to a
2089 function with the same name is considered to be a self-reference;
2090 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2091 optimization quality.
2092 * new optimization on x86: logical functions and + now have
2093 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2094 used when the result is truncated to 32 bits.
2095 * VALUES declaration is partially enabled.
2096 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2097 * fixed some bugs revealed by Paul Dietz' test suite:
2098 ** The system now obeys the constraint imposed by
2099 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2100 types form a lattice under type intersection.
2101 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2102 ** ASSOC now ignores NIL elements in an alist.
2103 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2104 and (1+ MOST-POSITIVE-FIXNUM) answers.
2105 ** The addition of a method with invalid qualifiers to a generic
2106 function does not cause an error to be signalled immediately;
2107 a warning is signalled, and the error is generated only on
2108 calling the generic function.
2109 * changed .fasl file version number, in part to add type codes for
2110 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2111 obscure ANSI requirements
2113 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2114 * fixed bug 148: failure to inline-expand a local function left
2115 garbage, confusing the compiler.
2116 * fixed bugs 3cd: structure slot readers perform type check if the
2117 slot can have an invalid value (i.e. it is either not initialized
2118 or can be written with a less specific slot writer).
2119 * bug fix: the compiler now traps array references to elements off
2120 the end of an array; previously, the bounds checking in some
2121 circumstances could go off-by-one.
2122 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2124 * type declarations for array element types now obey the description
2125 on the CLHS page "Declaration TYPE", as per discussions on
2126 sbcl-help around 2003-05-08. This means that a declaration
2127 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2128 declaration, all references to BAR will be asserted or assumed
2129 (with THE, so dependent on compiler policy) to involve objects of
2130 type FOO. Note that no such declaration is implied in
2131 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2132 * declared types of functions from the "Conditions"
2133 chapter. (reported by Paul Dietz)
2134 * bug fix: CERROR accepts a function as its first argument.
2135 * bug fix: NTH an NTHCDR accept a bignum as index
2136 arguments. (reported by Adam Warner)
2137 * optimization: character compare routines now optimize comparing
2138 against a constant character. (reported by Gilbert Baumann)
2139 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2140 argument now works properly on the MIPS platform.
2141 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2142 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2143 declared to have a functional type, does not cause an error
2145 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2146 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2147 * fixed bug: if last continuation of a deleted block has a
2148 destination, this destination should be deleted too. (reported by
2150 * fixed a bug in the bootstrap process: the host compiler's values
2151 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2152 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2153 test case from Patrik Nordebo)
2154 * improved the ability of the disassembler on the PPC platform to
2155 provide helpful disassembly notes.
2156 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2157 the class in more cases than previously.
2158 * bug fix: FILE-POSITION now understands :START and :END for
2159 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2160 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2161 8) data. (thanks to David Lichteblau)
2162 * bug fix: it is possible to add a method to a generic function
2163 without lambda list.
2164 * bug fix: reader failed to signal END-OF-FILE inside an
2165 object representation. (reported by Nikodemus Siivola)
2166 * fixed some bugs revealed by Paul Dietz' test suite:
2167 ** LAST and [N]BUTLAST should accept a bignum.
2168 ** condition slot accessors are methods.
2169 ** (VECTOR NIL) is a subtype of STRING.
2171 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2172 * minor incompatible change: some nonsensical specialized lambda
2173 lists (used in DEFMETHOD) which were previously ignored now signal
2175 * minor incompatible change: the system is now aware of the types of
2176 variables in the COMMON-LISP package, and will signal errors for
2177 most violations of these type constraints (where previously they
2178 were silently accepted).
2179 * minor incompatible change: COMPILE-FILE now uses the freedom
2180 afforded (ANSI 3.2.2.3) to use derived function types for
2181 functions defined in the same file. This also permits the system
2182 to warn on static type mismatches and function
2183 redefinition. (Currently it does not work with high DEBUG level.)
2184 * minor incompatible change: VALUES declaration is disabled.
2185 * When issuing notes, the compiler now signals a condition of type
2186 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2187 restart for use in user handlers. It is expected that the
2188 COMPILER-NOTE condition will eventually become a condition
2189 supertype to a hierarchy of note types, which will then be
2190 handleable in a similar fashion. However, at the moment, no such
2191 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2192 but it's an implementation detail, not a classification for the
2194 * Changes in type checking closed the following bugs:
2195 ** type checking of unused values (192b, 194d, 203);
2196 ** template selection based on unsafe type assertions (192c, 236);
2197 ** type checking in branches (194bc).
2198 * A short form of VALUES type specifier has ANSI meaning (it has
2199 increased the number of situations when SBCL cannot perform type
2201 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2202 keywords or constants is permissible.
2203 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2204 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2205 classes. (thanks to Antonio Martinez)
2206 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2207 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2208 argument to a pretty-print stream. Instead, it leaves any such
2209 operations to DESCRIBE-OBJECT methods.
2210 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2212 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2213 lambda lists. (thanks to David Lichteblau)
2214 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2215 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2216 (thanks to Gerd Moellmann)
2217 * fixed bug 246: increased compilation speed of long
2218 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2220 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2222 * DEFCONSTANT now throws a condition of type
2223 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2224 constant to a non-EQL value; CONTINUE and ABORT restarts
2225 respectively change and preserve the value.
2226 * fixed bug 63: The code walker, part of the implementation of CLOS,
2227 is now better at handling symbol macros.
2228 * bug fix: There is no longer an internal implementation type named
2229 CL:LENGTH. (reported by Raymond Toy)
2230 * bug fix: In macro-like defining macros/special operators the
2231 implicit block does not enclose the lambda list.
2232 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2233 enclosed in parentheses) are not suitable as type specifiers, and
2234 their use properly signals an error now.
2235 * bug fix: An argument count mismatch for a type specifier in code
2236 being compiled no longer causes an unhandled error at compile
2237 time, but signals a compile-time warning.
2238 * fixed simple vector readable printing
2239 * bug fix: DESCRIBE takes more care over whether the class
2240 precedence list slot of a class is bound before accessing it.
2241 (reported by Markus Krummenacker)
2242 * bug fix: FORMATTER can successfully compile pretty-printer format
2243 strings which use variants of the ~* directive inside.
2244 * bug fix: SEARCH now applies its TEST predicate to the elements of
2245 the arguments in the correct order. (thanks to Wolfhard Buss)
2246 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2247 in type inference. (thanks to Robert E. Brown)
2248 * bug fix: Reading in symbols with an explicit package name of ""
2249 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2250 * fixed some bugs revealed by Paul Dietz' test suite:
2251 ** NIL is now allowed as a structure slot name.
2252 ** Arbitrary numbers, not just REALs, are allowed in certain
2253 circumstances in LOOP for-as-arithmetic clauses.
2254 ** Multiple class redefinitions before slot access no longer
2255 causes a type error.
2256 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2257 association between the name and a class.
2258 ** Generic functions with non-standard method-combination and over
2259 five methods all of which return constants no longer return NIL
2260 after the first few invocations. (thanks to Gerd Moellmann)
2261 ** CALL-NEXT-METHOD with no arguments now passes the original
2262 values of the arguments, even in the presence of assignment.
2263 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2265 ** DISASSEMBLE works with closures and funcallable instances.
2266 ** ADD-METHOD now returns the generic function, not the new method.
2267 ** FIND-METHOD signals an error if the lengths of the specializers
2268 is incompatible with the generic function, even if the ERRORP
2270 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2271 which its argument is a member.
2272 ** DEFCLASS only redefines the class named by its class-name
2273 argument if that name is the proper name of the class;
2274 otherwise, it creates a new class.
2275 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2276 of the UNBOUND-SLOT condition to the name of the slot.
2277 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2278 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2279 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2280 SLOT-MAKUNBOUND in the specified fashion.
2282 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2283 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2284 cross-compilation host. As a consequence, we can now bootstrap our
2285 way up to SBCL starting with a bare gcc toolchain and human-readable
2286 source code (first the source to CLISP, then the source to SBCL).
2287 * A contributed module containing a partial implementation of the
2288 simple-streams interface has been included. (thanks to Rudi
2290 * A contributed module implementing the RFC1321 Message Digest
2291 Algorithm, known as MD5, has been included.
2292 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2293 no longer has any effect, as the code controlled by this feature
2294 has been deleted. (As far as we know, no-one has ever built using
2295 this feature, and its semantics were confused in any case).
2296 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2297 work on conditions (as required by the ANSI specification),
2298 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2299 expected behaviour on conditions. Users should note, however,
2300 that such behaviour is not required by the ANSI specification,
2301 and so use of this behaviour may render their code unportable.
2302 * fixed some bugs revealed by Paul Dietz' test suite:
2303 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2305 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2306 ** SXHASH on condition objects no longer returns NIL.
2307 ** :ALLOCATION :CLASS slots are better treated; their values are
2308 updated on class redefinition, and initforms inherited from
2309 superclasses are applied.
2310 ** REMOVE-METHOD returns its generic function argument even when
2311 no method was removed.
2312 ** SHARED-INITIALIZE now initializes the values of the requested
2313 slots, including those with :ALLOCATION :CLASS.
2314 ** ALLOCATE-INSTANCE now works on structure classes defined via
2315 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2317 ** SLOT-EXISTS-P now works on conditions, as well as structures
2319 ** MAKE-LOAD-FORM now has the required methods on
2320 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2321 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2322 keyword, and now implements the SLOT-NAMES argument.
2323 ** methods with &OPTIONAL arguments no longer allow too many
2324 arguments to be passed in the call without error.
2325 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2326 option is consistent with the required arguments of the generic
2327 function lambda list.
2328 * bug fix: REQUIRE accepts a string designator. (Thanks to
2330 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2331 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2332 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2333 * bug fix: The compiler now checks for duplicated variables in macro
2335 * bug fix: SETQ on globals returns the correct value.
2336 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2337 not a COMPILER-ERROR (followed by some other strange error on
2338 choosing the CONTINUE restart).
2339 * bug fix: make.sh and friends are now more consistent in the way that
2340 they look for GNU "make".
2342 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2343 * experimental native threads support (on x86 Linux >=2.4 only).
2344 This is not compiled in by default: you need to add :SB-THREAD to
2345 the target features. See the "Beyond ANSI" chapter of the manual
2347 * fix for longstanding nonANSIism: The old distinction between
2348 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2349 The return value from CL:FIND-CLASS is now a CLOS class, and
2350 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2351 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2352 * An interface to the MetaObject Protocol, as described in Kiczales,
2353 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2354 MIT Press, 1991, is available from the SB-MOP package.
2355 * incompatible change: the SB-PCL package should now be considered
2356 a private implementation detail, and no longer a semi-private MOP
2358 * minor incompatible change: due to rearrangement for threads, the
2359 control stack and binding stack are now allocated at arbitrary
2360 addresses instead of being hardcoded per-port. Users affected by
2361 this probably have to be doing advanced things with shared
2362 libraries, and will know who they are.
2363 * minor incompatible change: Previously, all --eval forms used were
2364 processed with READ before any of them were processed with EVAL.
2365 Now each --eval form is processed with both READ and EVAL before
2366 the next --eval form is processed. (Thus package operations like
2367 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2368 work as the user might reasonably expect.)
2369 * minor incompatible change: *STANDARD-INPUT* is now only an
2370 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2372 * minor incompatible change: Y-OR-N-P is now character-oriented,
2373 not line oriented. Also, YES-OR-NO-P now works without errors.
2374 (thanks to Antonio Martinez)
2375 * sb-aclrepl module improvements: an integrated inspector, added
2376 repl features, and a bug fix to :trace command.
2377 * Known functions, which cannot be open coded by the backend, are
2378 considered to be able to check types of their arguments. (fixing
2379 a bug report by Nathan J. Froyd)
2380 * fixed a bug in computing method discriminating functions: It is
2381 now possible to define methods specialized on classes which have
2382 forward-referenced superclasses. (thanks to Gerd Moellmann)
2383 * fixed evaluation order in optional entries (reported by Gilbert
2385 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2386 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2387 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2388 required-by-AMOP NAME argument, as well as CLASS and
2389 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2390 * fixed bug 20: DEFMETHOD can define methods using names that are
2391 not the proper names of classes to designate class specializers.
2392 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2393 Unix file descriptors, instead of blowing up. (thanks to Antonio
2395 * Garbage collection refactoring: user-visible change is that a
2396 call to the GC function during WITHOUT-GCING will not do garbage
2397 collection until the end of the WITHOUT-GCING. If you were doing
2398 this you were probably losing anyway.
2399 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2400 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2401 TYPEP the latter but not the former.
2402 * The compiler issues a full WARNING for calls to undefined functions
2403 with names from the CL package.
2404 * MAP-INTO for a vector destination is open coded. (reported by
2405 Brian Downing on c.l.l)
2406 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2407 documentation string.
2408 * fixed some bugs revealed by Paul Dietz' test suite:
2409 ** COPY-ALIST now signals an error if its argument is a dotted
2411 ** Condition slots are now accessed more correctly in the presence
2412 of multiple initargs for a given slot.
2413 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2414 exclude restarts of the same name associated with a different
2416 ** DEFCLASS of forward-referenced classes with another
2417 forward-referenced class in the superclasses list no longer
2419 ** Condition slots are now initialized once each, not multiple
2420 times. (thanks to Gerd Moellmann)
2421 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2423 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2424 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2425 arguments contain duplicated elements.
2426 ** RESTART-CASE understands local macros.
2427 ** RESTART-CASE associates exactly its own restarts with a condition.
2428 ** ENDP in safe mode checks its argument to be of type LIST.
2429 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2430 in question is unbound.
2431 ** Optimized MAKE-INSTANCE functions no longer cause internal
2432 assertion failures in the presence of duplicate initargs.
2433 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2434 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2435 propagated even in the ctor optimized implementation of
2437 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2439 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2440 * a better implementation of SXHASH on (simple) bit vectors,
2441 measured both in execution speed and in distribution of results
2442 over the positive fixnums, has been installed. Likewise, a better
2443 implementation of EQUAL for simple bit vectors is now available.
2444 * fixed CEILING optimization for a divisor of form 2^k.
2445 * fixed bug 240 (emitting extra style warnings "using the lexical
2446 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2447 by Antonio Martinez)
2448 * fixed SXHASH, giving different results for NIL depending on type
2449 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2450 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2451 variable. (found by Rolf Wester)
2452 * SBCL does not ignore type declarations for special
2453 variables. (reported by rif on c.l.l 2003-03-05)
2454 * some bug fixes in contrib/sb-aclrepl/
2455 * fixed some bugs revealed by Paul Dietz' test suite:
2456 ** a bug in the CONS type specifier, whereby the CAR and CDR
2457 types got intertwined, has been fixed;
2458 ** the type system is now able to reason about the interaction
2459 between INTEGER and RATIO types more completely;
2460 ** APPEND, [N]REVERSE and NRECONC check that those their
2461 arguments, which must be proper lists, are really so;
2462 ** An array specialized to be unable to hold elements has been
2463 implemented, as required -- yes, really -- by ANSI;
2464 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2465 on malformed property lists;
2467 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2468 * incompatible packaging change: in line with Unix convention,
2469 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2470 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2471 * REQUIRE and PROVIDE are now optionally capable of doing something
2472 useful. See the documentation string for REQUIRE.
2473 * infrastructure for a managed SBCL contrib system: contributed
2474 modules in this release include:
2475 ** the ASDF system definition facility;
2476 ** an interface to the BSD Sockets API;
2477 ** an ACL-like convenience interface to the repl;
2478 (thanks to Kevin Rosenberg)
2479 ** an implementation of ROTATE-BYTE, with efficient implementation
2481 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2482 gives a closer approximation to the right answer than previously.
2483 (thanks to Raymond Toy)
2484 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2485 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2486 optional environment arguments, as required by ANSI.
2487 * fixed bugs in other functions taking environment objects, allowing
2488 calls with an explicit NIL environment argument to be compiled
2490 * fixed bug 228: primary return values from
2491 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2492 COMPILE or FUNCTION.
2493 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2494 :TYPE will no longer signal errors on innocuous objects.
2495 * fixed bug 231b: SETQ is better at respecting type declarations in
2496 the lexical environment.
2497 * fixed a bug in DEFCLASS: classes named by symbols with no or
2498 unprintable packages can now be defined.
2499 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2500 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2501 * fixed compiler failure related to checking types of functions.
2502 (reported by Robert E. Brown)
2503 * the compiler is now much more consistent in its error-checking
2504 treatment of bounding index arguments to sequence functions: in
2505 (SAFETY 3) code, errors will be signalled in almost all cases if
2506 invalid sequence bounding indices are passed to functions defined
2507 by ANSI to operate on sequences.
2508 * fixed a bug in the build procedure: documentation of SBCL-specific
2509 packages is now preserved and available in the final Lisp image.
2510 * lifted FDEFINITION lookup out of loops in the implementation of
2511 many list operations. (thanks to Robert E. Brown)
2512 * fixed a bug in the reader: the #n# reader macro now works for
2513 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2514 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2515 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2516 E. Brown and Tony Martinez respectively)
2517 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2518 SLOT-BOUNDP: in particular, it is now able to optimize them much
2519 better, and is now not vulnerable to having packages renamed.
2520 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2521 always called when a slot is not present in an instance. (thanks
2523 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2524 longer signal an error on unreading a character following EOF on
2525 the previous constituent stream. (thanks to Tony Martinez)
2526 * fixed some bugs revealed by Paul Dietz' test suite:
2527 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2528 not just nonnegative fixnums;
2529 ** the logical bit-array operators such as BIT-AND now accept an
2530 explicit NIL for their "opt-arg" argument (to indicate a
2531 freshly-consed result bit-array);
2532 ** ELT now signals an error on an invalid sequence index in safe
2534 ** the type system is now cleverer about negations of numeric
2535 types, and consequently understands the BIGNUM and RATIO types
2537 ** the type system is now cleverer about the interaction between
2538 INTEGER and RATIO types: while bugs still remain, many more
2539 cases are accurately computed;
2540 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2541 if it is in the last clause;
2542 ** CONSTANTLY now correctly returns a side-effect-free function in
2544 ** DECLARE is no longer treated as a special-operator; in
2545 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2546 * incremented fasl file version number due to the change in the
2547 DEFSTRUCT-SLOT-DESCRIPTION structure.
2549 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2550 * minor incompatible change: code processed by the "interpreter" or
2551 EVAL now has a compilation optimization policy of (DEBUG 2)
2552 (changed from (DEBUG 1)) to improve debuggability of interactive
2553 development, and to allow the use of the debug RETURN command in
2555 * an experimental implementation of the RETURN command for the
2556 debugger has been included. (thanks to Frederik Kuivinen)
2557 * fixed bug 62: constraints were not propagated into a loop.
2558 * fixed bug in embedded calls of SORT (reported and investigated by
2560 * fixed some bugs revealed by Paul Dietz' test suite:
2561 ** printing and reading of arrays with some dimensions having
2562 length 0 (thanks to Gerd Moellmann);
2563 ** BOA constructor with &AUX argument without a default value does
2564 not cause a type error;
2565 ** CONSTANTP now returns true for all self-evaluating objects.
2567 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2568 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2569 accessors that are related by inheritance, as specified in the
2570 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2571 Valtteri Vuorikoski)
2572 * The compiler is now able to inline functions that were defined in
2573 a complex lexical environment (e.g. inside a MACROLET).
2574 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2576 * Support for the upcoming FreeBSD-5.0 release has been included.
2577 (thanks to Dag-Erling Smorgrav)
2578 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2579 effect when it is not in a toplevel context.
2580 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2581 stand a better chance of being correct. (thanks to Gerd
2583 * fixed bug in COERCE, which now signals an error on coercing a
2584 rational to a bounded real type which excludes the expected
2586 * The compiler is now able to derive types more accurately from the
2587 COERCE and COMPILE functions.
2588 * fixed bug 223: functional binding is considered to be constant
2589 only for symbols in the CL package.
2590 * fixed bug 231: SETQ did not check the type of a variable being set
2591 (reported by Robert E. Brown)
2592 * A new optimization for MAKE-INSTANCE has been included, fixing
2593 various bugs (including relating to :ALLOCATION :CLASS slots and
2594 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2596 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2597 ** As required by ANSI, LOOP now disallows anonymous collection
2598 clauses such as COLLECT I in conjunction with aggregate boolean
2599 clauses such as THEREIS (= I 1);
2600 ** LOOP now signals an error when any variable is reused in the
2601 same loop (including the potentially useful construct analogous
2602 to WITH A = 1 WITH A = (1+ A);
2603 ** IT is only a special loop symbol within the first clause of a
2604 conditional loop clause;
2605 ** LOOP with a typed iteration variable over a hashtable now
2606 signals a type error iff it should.
2607 * fixed some other bugs revealed by Paul Dietz' test suite:
2608 ** FILE-STREAM now names the class previously known as FD-STREAM;
2609 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2610 argument) no longer signals an error;
2611 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2612 of the slot symbol, rather than using the current package
2613 ((:CONC-NAME "") continues to intern the slot's name in the
2615 * incremented fasl file version number, because of the incompatible
2616 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2617 of the new implementation of DEFINE-COMPILER-MACRO.
2619 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2620 * Support for building SBCL for MIPS platforms running in
2621 little-endian mode has now been checked in, and basic
2622 functionality on said platforms verified.
2623 * minor incompatible change: PCL now records the pathname of a file
2624 in which methods and the like are defined, rather than its
2626 * minor incompatible change: TRUENAME now considers the truename of
2627 a file naming a directory to be the pathname with :DIRECTORY
2628 component indicating that directory.
2629 * minor incompatible change: a NAMED clause in the extended form of
2630 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2631 reason for the previous behaviour is unclear.
2632 * more systematization and improvement of CLOS and MOP conformance
2633 in PCL (thanks to Gerd Moellman and Pierre Mai):
2634 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2636 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2637 primary methods with no specializers;
2638 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2640 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2641 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2642 FORWARD-REFERENCED-CLASSes; error reporting on
2643 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2645 ** SXHASH on CLOS instances now uses a slot internal to the
2646 instance to return different numbers on distinct instances,
2647 while preserving the same return value through invocations of
2649 ** DEFMETHOD signals errors when methods with longer incongruent
2650 lambda lists are added to generic functions;
2651 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2652 CLASS, as specified in AMOP;
2653 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2654 on the order returned by the primary method for classes of
2655 class STANDARD-CLASS;
2656 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2657 * fixed some bugs shown by Paul Dietz' test suite:
2658 ** DOLIST puts its body in TAGBODY;
2659 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2661 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2662 value producing form;
2663 ** if more variables are given to PROGV than values, extra
2664 variables are bound and made to have no value;
2665 ** NSUBSTITUTE on list arguments gets the right answer with
2667 ** ELT signals an error of type TYPE-ERROR when the index argument
2668 is not a valid sequence index;
2669 ** LOOP signals (at macroexpansion time) an error of type
2670 PROGRAM-ERROR when duplicate variable names are found;
2671 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2672 ** FUNCALL of special-operators now cause an error of type
2674 ** PSETQ now works as required in the presence of side-effecting
2675 symbol-macro places;
2676 ** NCONC accepts any object as its last argument;
2677 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2679 ** loop-for-as-package does not require a package to be explicitely
2681 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2683 * fixed bug 166: compiler preserves "there is a way to go"
2684 invariant when deleting code.
2685 * fixed bug 172: macro lambda lists with required arguments after
2686 &REST arguments now cause an error to be signalled. (thanks to
2688 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2689 bug. (thanks to Matthew Danish)
2690 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2692 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2693 arguments are lexically rebound. (thanks to Gerd Moellmann and
2695 * fixed bug 194: error messages are now more informative when there
2696 is no primary method applicable in a call to a generic
2697 function. (thanks to Gerd Moellmann)
2698 * fixed bug in command line argument checking (thanks to Julian
2700 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2701 (thanks to Matthew Danish)
2702 * incremented fasl file version number, because of the
2703 SXHASH-related changes in the layout of CLOS data structures
2705 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2706 * minor incompatible change: The runtime (the Unix executable named
2707 "sbcl") is now much pickier about the .core files it will load.
2708 Essentially it now requires .core files to descend from the same
2709 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2710 as the runtime does. (The intent is to prevent the crashes which
2711 can occur, and which can even be reported as mysterious failures,
2712 when people patch the sources or change the build parameters
2713 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2714 sbcl and .core files.)
2715 * fixed bug: VALUES-LIST is no longer optimized away.
2716 * fixed bug 142: The FFI conversion of C string values to Lisp
2717 string values no longer conses excessively. (thanks to Nathan
2718 Froyd porting Raymond Toy's fix to CMU CL)
2719 * began to systematize and improve MOP conformance in PCL (thanks to
2720 Nathan Froyd, Gerd Moellman and Pierre Mai):
2721 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2723 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2724 ** FINALIZE-INHERITANCE is now called on class finalization;
2725 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2726 argument precedence order.
2727 * fixed bug 202: The compiler no longer fails on functions whose
2728 derived types contradict their declared type.
2729 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2730 so it can be non-toplevel.
2731 * The fasl file version number has changed (because of the new
2732 implementation of DEFMACRO).
2733 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2734 safe code, that any length requirement by their type-specifier
2735 argument is valid. The exceptions to this are described in bug
2737 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2738 functions now check the types of their inputs as required by ANSI.
2739 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2740 introduced symbol is DECLAREd to be SPECIAL.
2741 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2742 * fixed bug: :COUNT argument to sequence functions may be negative
2743 * fixed bug: body of DO-SYMBOLS may contain declarations
2744 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2745 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2746 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2747 symbol macro only once
2748 * fixed printing of call frame when argument list is unavailable
2749 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2750 * compiler no longer signals WARNING on unknown keyword
2753 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2754 * A beta-quality port to the mips architecture running Linux,
2755 based on the old CMUCL backend, has been made. It has been tested
2756 on a big-endian kernel, and works sufficiently well to be able to
2757 rebuild itself; it has not been tested in little-endian mode.
2758 * fixed an inconsistency between gencgc.c and purify.c which made
2759 dumping/loading .core files unreliable
2760 * fixed bug 120a: The compiler now deals correctly with IFs where
2761 the consequent is the same as the alternative, instead of
2762 misderiving the return type. (thanks to Alexey Dejneka)
2763 * fixed bug 113: Logical pathnames are now dumpable (the logical
2764 host is resolved at load-time, throwing an error if it is not
2766 * fixed bug 174: FORMAT's error message is slightly clearer when a
2767 non-printing character is used in a format directive.
2768 * fixed several bugs in compiler checking of type declarations, i.e.
2769 violations of the Python "declarations are assertions" principle
2770 (thanks to Alexey Dejneka)
2771 * fixed several bugs in PCL's error checking (thanks to Gerd
2773 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2775 * fixed bug in compilation of functions as first class values
2776 (thanks to Antonio Martinez-Shotton)
2777 * The compiler's handling TYPE-ERRORs which it can prove will
2778 inevitably happen at runtime has been cleaned up and corrected
2779 in several ways. (thanks to Alexey Dejneka)
2780 * improved argument type checking for various basic arithmetic
2781 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2782 lavished on them in the past that they can be compiled in many
2783 ways in different special cases
2784 * fixed bug 181: compiler checks validity of user supplied type
2786 * cleaned up code flushing in optimization: Function calls which
2787 should signal errors for safety purposes (e.g. which ANSI says
2788 should signal errors when their arguments are of incorrect type)
2789 are no longer optimized away.
2790 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2791 * incremented fasl file version number, because changes in the
2792 implementation of sequence functions like COERCE caused
2793 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2794 in old inline expansions) to become undefined. (Actually these
2795 changes were later undone, so we might very well be binary
2796 compatible with 0.7.7 after all, but leaving the version number
2797 incremented seemed like the simplest and most conservative
2800 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2801 * An alpha-quality port to the parisc architecture running Linux,
2802 based on the old CMUCL backend, has been made. This, even more so
2803 than the other backends, should be considered still a work in
2804 progress; known problems include that the Linux kernel in 64-bit
2805 mode does not propagate the correct sigcontext structure to
2806 userspace, and consequently SBCL on a parisc64 kernel will not
2808 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2809 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2810 suppressed.) Also now that the compiler is looking at declarations
2811 in the environment, it checks optimization declarations as well,
2812 and suppresses inlining when (> DEBUG SPEED).
2813 * More fixes have been made to treatment of floating point exception
2814 treatment and other Unix signals. In particular, floating point
2815 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2816 * The detection and handling of control stack exhaustion (infinite
2817 or very deeply nested recursion) has changed. Stack exhaustion
2818 detection is now done by write-protecting pages at the OS level
2819 and applies at all optimization settings; when found, a
2820 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2821 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2822 be caught using IGNORE-ERRORS.
2823 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2824 correctly when transforming recursive LABELS functions to LETs.
2825 (thanks to Alexey Dejneka)
2826 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2827 that are names of constants or global variables.
2828 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2829 alien routines with docstrings.
2830 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2831 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2833 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2834 (thanks to Eric Marsden)
2835 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2836 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2837 * Bug fix: The SPARC backend can now compile functions involving
2838 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2839 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2840 to a functions expecting a PATHNAME-DESIGNATOR.
2841 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2842 lambda lists. (thanks to Alexey Dejneka)
2843 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2844 functions so that EXPORTing the name of the class doesn't cause
2845 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2846 to Antonio Martinez for reporting this)
2847 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2848 constant-folded without failing an assertion. (thanks to Einar
2849 Floystad Dorum for reporting this)
2850 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2851 types are now dealt with more correctly by the compiler.
2852 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2853 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2854 behaviour analogous to RENAME-FILE. This puts its behaviour more
2855 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2857 * The fasl file version number has changed again. (because of the
2858 bug fix involving the names of PCL MAKE-INSTANCE functions)
2860 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2861 * bug fix: Floating point exceptions are treated much more
2862 consistently on the x86/Linux and PPC/Linux platforms.
2863 * Array initialization with :INITIAL-ELEMENT is now much faster for
2864 cases when the compiler cannot open code the array creation, but
2865 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2866 array accesses have also seen a speed increase.
2867 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2868 specified. (This was at the root of some bad interactions between
2869 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2871 * bug fix: Internal error arguments for undefined functions are now
2872 computed correctly on the PPC/Linux platform.
2873 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2874 Raymond Toy's patch for CMU CL)
2875 * Support for the Solaris 9 operating environment has been included
2876 (thanks to Daniel Merritt)
2877 * A very ugly but hopefully complete draft of the missing FFI chapter
2878 of the manual has been created by reformatting the corresponding
2879 CMU CL manual chapter into (currently very ugly and incoherent)
2880 DocBook and bringing it up to date for SBCL behavior. Thus, the
2881 manual is now essentially complete, at least by my extreme
2882 once-and-only-once standards, whereby it's acceptable to refer to
2883 the doc strings of SB-EXT functions as the primary documentation.
2884 * The fasl file version number has changed again, due to cleanup of
2885 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2886 is no longer a static symbol.)
2888 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2889 * SBCL now builds with OpenMCL (version 0.12) as the
2890 cross-compilation host; also, more progress has been made toward
2891 bootstrapping under CLISP.
2892 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2894 * bug 158 fixed: The compiler can now deal with integer loop
2895 increments different from 1; fixing this turned out also to fix
2897 * bug 169 fixed: no more bogus warnings about using lexical bindings
2898 despite the presence of perfectly good SPECIAL declarations (thanks
2899 to David Lichteblau)
2900 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2901 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2902 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2904 * bug 180 fixed: Method combination specifications no longer ignore
2905 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2906 * bug fix: Structure type predicate functions now check their argument
2907 count as they should.
2908 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2909 correctly. (thanks to Pierre Mai)
2910 * minor incompatible change: The --noprogrammer option is deprecated
2911 in favor of the new --disable-debugger option, which is very similar.
2912 (The major difference is that it takes effect at a slightly different
2913 time at startup, causing handling of errors in --sysinit and
2914 --userinit files will be affected differently.) The
2915 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2916 been added to allow this functionality to be controlled from ordinary
2917 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2918 maintainers, who might want to run non-interactive scripts to
2919 build SBCL cores which will later be used interactively.)
2920 * minor incompatible change: The LOAD function no longer, when given
2921 a wild pathname to load, loads all files matching that pathname.
2922 Instead, an error of type FILE-ERROR is signalled.
2924 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2925 * bug 147 fixed: The compiler preserves its block link/count
2926 invariants more correctly now so that it doesn't crash. (thanks
2928 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2930 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2931 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2932 no-value-for-this-character as NIL (as specified by ANSI).
2933 * HOST-NAMESTRING on physical pathnames now returns a string that is
2934 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2935 (thanks to Christophe Rhodes)
2936 * The Alpha port handles icache flushing more correctly. (thanks to
2938 * More progress has been made toward bootstrapping under CLISP. (thanks
2939 to Christophe Rhodes)
2940 * The fasl file format has changed again, because dynamic loading
2941 on OpenBSD (which has non-ELF object files) motivated some cleanups
2942 in the way that foreign symbols are transformed and passed around.
2943 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2944 is no longer treated as whitespace by the reader, but instead as
2945 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2946 |A
\7fB|, instead of A as it used to.
2948 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2949 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2950 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2951 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2952 this as of 0.7.1.45, but was left out of the previous news section
2953 (thanks to Dan Barlow)
2954 * SBCL now runs on the Solaris operating system on SPARC architectures
2955 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2956 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2957 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2958 * SPARC backend cleanups, allowing builds of cores optimized for V8
2959 and V9 SPARCS, and also emission of code targeted to a particular
2960 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2962 * SBCL is closer to bootstrapping under CLISP, thanks to various
2963 fixes by Christophe Rhodes.
2964 * The fasl file format has changed again, to allow the compiler's
2965 INFO database to support symbol macros.
2966 * The user manual (in doc/) is formatted into HTML more nicely.
2967 (thanks to coreythomas)
2968 * The system is smarter about SUBTYPEP relationships, especially
2969 those involving NOT types (including types such as ATOM which are
2970 represented internally using NOT types). Thus SUBTYPEP is less
2971 likely to return (VALUES NIL NIL) in general, and in particular
2972 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
2974 * The fasl file format has changed again, because the internal
2975 representation of types now includes a new slot to support the new
2976 SUBTYPEP-of-NOT-types logic.
2977 * (not a change in the main branch of SBCL, but a related prototype
2978 which can hopefully be merged into the main branch of SBCL in the
2979 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2980 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2981 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2982 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2983 dispatch macro character combinations. (thanks to Alexey Dejneka)
2984 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2985 that superficially look like logical namestrings correctly.
2986 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2988 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2989 default supplied-p) for &optional and &key arguments. (thanks to
2992 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2993 * incompatible change: The compiler is now less aggressive about
2994 tail call optimization, doing it only when (> SPACE DEBUG) or
2995 (> SPEED DEBUG). (This is an incompatible change because there are
2996 programs which relied on the old CMU-CL-style behavior to optimize
2997 away their unbounded recursion which will now die of stack overflow.)
2998 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2999 for non-GENCGC systems has been increased to 20M (since that
3000 seems much closer to the likely performance optimum for modern
3001 systems than the old 4M value was)
3002 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3003 and *DEBUG-PRINT-LEVEL*
3004 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3005 of CMU CL's support for SPARC, and various endianness and other
3006 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3007 * new syntactic sugar for the Unix command line: --load foo.bar is now
3008 an alternate notation for --eval '(load "foo.bar")'.
3010 ** The system now detects stack overflow and handles it gracefully,
3011 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3012 optimization settings. (This is a good thing in general, and
3013 its introduction in this version should be particularly timely
3014 for anyone whose code fails because of suppression of tail
3016 ** The system now hunts for the C variable "environ" in a more
3017 devious way, to avoid segfaults when the C library version differs
3018 between compile time and run time. (thanks to Christophe Rhodes)
3019 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3020 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3021 ** The compiler no longer issues bogus style warnings for undefined
3022 classes in the same source file as the DEFCLASSes which defined
3023 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3025 ** fixes in CONDITION class precedence list for undefined function
3026 errors (thanks to Alexei Dejneka)
3027 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3028 correctly. (thanks to Dan Barlow)
3029 ** portability fixes aiming at bootstrapping under CLISP (thanks
3030 to Dave McDonald and Christophe Rhodes)
3031 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3032 ** fixes in type translation and and type inference (thanks to
3034 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3035 ** various fixes in the new ports (thanks to Dan Barlow)
3036 * several changes related to debugging:
3037 ** suppression of tail recursion, as noted above
3038 ** stack overflow detection, as noted above
3039 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3040 is now the default. (For some time encapsulation has been more
3041 reliable than the breakpoint-based :ENCAPSULATE NIL
3042 implementation, at least on X86 systems; and I just noticed that
3043 encapsulation also seems closer to the spirit of the ANSI
3046 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3048 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3049 up properly again. (There was a packaging bug in 0.7.0 which
3050 left their definitions in SB-SYS::LOAD-FOREIGN and
3051 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3052 vital for most things which interface to C-level interfaces,
3053 like extensions working with sockets or databases or
3054 Perl-compatible regexes or whatever, and the need to fix
3055 this bug is the main reason that 0.7.1 was released so
3057 ** DEFGENERIC is now choosier about the methods it redefines, so that
3058 reLOADing a previously-LOADed file containing DEFGENERICs does
3059 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3060 cycle now works as it should. (thanks to Alexey Dejneka)
3061 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3062 fixed by Christophe Rhodes. (He actually submitted this patch
3063 months ago, and I delayed until after 0.7.0.)
3064 ** Bug 111 (internal compiler confusion about runtime checks on
3065 FUNCTION types) was fixed by Alexey Dejneka.
3066 * Some internal cleanups (getting rid of variables which aren't
3067 needed now that the byte interpreter is gone) caused the fasl
3068 file format number to change again.
3070 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3071 * major incompatible change: The default fasl file extension, i.e. the
3072 default extension for files produced by COMPILE-FILE, has changed
3073 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3075 ** There are many changes in the implementation of the compiler.
3076 SBCL is now essentially a compiler-only implementation of ANSI
3077 Common Lisp. EVAL still "interprets" a few special cases, but
3078 almost all the interesting cases are handled by creating
3079 a LAMBDA expression, calling COMPILE on it, then calling
3080 FUNCALL on the result.
3081 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3082 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3083 Since the code is newer, there might still be some new bugs
3084 (though not as many as before Martin Atzmueller's fixes:-). But
3085 the new code is substantially simpler and clearer, and hopefully
3086 any remaining bugs will be simpler, less fundamental, and more
3087 fixable then the bugs in the old code.
3088 ** The revised compiler is still a little unsteady on its feet.
3090 *** The debugging information it produces (particularly the names
3091 of FUNCTION objects) is sometimes much less useful than what
3092 the old compiler produced.
3093 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3094 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3095 within a MACROLET) has been temporarily weakened.
3096 ** There are new compiler optimizations for various functions:
3097 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3098 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3099 *** the math functions TRUNCATE, FLOOR, and CEILING
3100 *** the function-of-all-trades COERCE
3101 Mostly these should be transparent, but there's one
3102 potentially-annoying problem (bug 117): when the compiler
3103 inline-expands a function and does type analysis on the result,
3104 it can create control paths which have type mismatches, and
3105 when it can't prove that those control paths aren't taken,
3106 it will issue WARNINGs about the type mismatches. This is
3107 a particular problem in practice for the new sequence functions.
3108 It's not clear how this should be fixed, and for now, a
3109 workaround is given in the entry for 117 in the BUGS file.
3110 ** (Because of the interaction between the two previous items --
3111 occasional inlining problems and new inline expansions -- some
3112 of the new sequence function optimizations won't really kick in
3113 completely until debugging information, and then inlining, are
3114 straightened out in some future version.)
3115 * minor incompatible changes:
3116 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3117 DIRECTORY no longer implicitly promotes NIL slots of its
3118 pathname argument to :WILD. In particular, when you ask for the
3119 contents of a directory (which you used to be able to do without
3120 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3121 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3122 ** changes in behavior that ANSI explicitly defines to be
3123 implementation dependent:
3124 *** The new compiler-only implementation still conforms with ANSI,
3125 but acts a little different than before. Besides the obvious
3126 changes in performance tradeoffs (that the cost per form passed
3127 to EVAL has gone up, and the cost per form executed by EVAL
3128 has gone down), the behavior of the system changes a little
3129 because there are no longer any interpreted function objects.
3130 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3131 e.g. doing COMPILE on the output of interactive DEFUN is
3133 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3135 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3136 has changed from (:CL) to NIL.
3137 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3138 e.g. #\Newline and #\Tab, don't have names specified in the
3139 ANSI Common Lisp standard, is now based on their ASCII symbolic
3140 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3141 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3142 are no longer used for output.
3143 ** changes in internal implementation constants:
3144 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3145 4 million. (If your application spends a lot of time GCing and
3146 you have a lot of RAM, you might want to experiment with
3147 increasing it even more.)
3148 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3149 However, almost all old code should still continue to work without
3150 immediate update, as SB-C-CALL is now a (deprecated) nickname
3152 ** Old operator names in the style DEF-FOO are now deprecated in
3153 favor of new corresponding names DEFINE-FOO, for consistency with
3154 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3155 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3156 internal symbols, but a few supported extensions like
3157 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3158 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3159 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3160 etc. as you get deeper into recursive calls to the debugger
3161 command loop, instead of the old "5]", "5]]", "5]]]"
3162 sequence. (I was motivated to do this when squabbles between
3163 ILISP and SBCL left me very deeply nested in the debugger. In the
3164 short term, this change will probably provoke more ILISP/SBCL
3165 squabbles, but hopefully it will be an improvement in the long run.)
3166 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3167 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3168 function, since declaiming return types involving aliens is
3169 (1) annoyingly messy to do by hand and (2) vital to efficient
3170 compilation of code which calls such functions.
3171 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3172 longer reexported by the SB-EXT package. They're solely useful
3173 for alien code, so it seems more logical that you should get
3174 them from the SB-ALIEN package, not in SB-EXT.
3175 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3176 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3177 features. Instead, the code that they used to control is always
3178 built into the system.
3179 * many other bug fixes
3180 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3181 advantage of the new EVAL-WHEN stuff and to clean them up in
3182 general, and they are now more ANSI-compliant in a number of
3183 ways. Martin Atzmueller is responsible for a lot of this.
3184 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3186 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3187 *** correct ERROR type for various file operations
3188 *** some fixes for Lisp streams
3189 *** DEFMETHOD syntax checking
3190 *** changing old weird representation of debug information as
3191 strings (which, among their other deficiencies, don't transform
3192 correctly when you rename packages, and don't change their
3193 print representation when you change things like *PACKAGE*
3194 and *PRINT-LENGTH*) to symbols and lists of symbols
3195 He also made several improvements and fixed several bugs in DESCRIBE.
3196 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3198 *** misbehavior of WRITE-STRING/WRITE-LINE
3199 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3200 and several other LOOP problems as well
3201 *** DIRECTORY when similar filenames are present
3202 *** DEFGENERIC with :METHOD options
3203 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3204 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3205 *** argument ordering in FIND with :TEST option
3206 *** mishandled package designator argument in APROPOS-LIST
3207 *** various problems in the backquote readmacro
3208 *** a bug in APROPOS
3209 *** probably some others that I'm not describing very well here,
3210 since the CVS log documents them by reference to sbcl-devel
3211 messages, and the SourceForge archives aren't working well.:-(
3212 ** Dan Barlow improved the Alpha port (and is making progress on the
3213 PPC port, for those of you who think different).
3214 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3215 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3216 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3217 continues to work on the SPARC port (for those of you in a position
3218 to look down upon our little PC-compatible boxes from a great height).
3219 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3220 and uses that copy, rather than the current dynamic value, when
3221 it's trying to decide whether to truncate output. Thus e.g.
3222 (let ((*print-lines* 50))
3223 (pprint-logical-block (stream nil)
3225 (let ((*print-lines* 8))
3226 (print (aref possiblybigthings i) stream)))))
3227 should now truncate the logical block only at 50 lines, instead of
3228 often truncating it at 8 lines, as it did before.
3229 * The doc/cmucl/ directory, containing old CMU CL documentation
3230 from the time of the fork, is no longer part of the base system.
3231 SourceForge has shut down its anonymous FTP service, and with it
3232 my original plan for distributing the old CMU CL documentation
3233 there. For now, if you need these files you can download an old
3234 SBCL source release and extract them from it.
3235 * The fasl file version number changed again, for dozens of reasons,
3236 some of which are apparent above.
3238 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3239 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3240 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3241 patch, so that DISASSEMBLE output is much nicer.
3242 * The code in the SB-PROFILE package now seems reasonably stable.
3243 I still haven't decided what the final interface should look like
3244 (I'd like PROFILE to interact cleanly with TRACE, since both
3245 facilities use function encapsulation) but if you have a need
3246 for profiling now, you can probably use it successfully with
3247 the current CMU-CL-style interface.
3248 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3249 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3250 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3251 link now returns the dangling link itself, and for similar
3252 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3253 link itself. (In these cases the old code signalled an error and
3254 looped endlessly, respectively.) Thus, DIRECTORY now works even
3255 in the presence of dangling and cyclic symbolic links.
3256 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3257 is now a supported extension again, since the consensus on
3258 sbcl-devel was that it can be useful for ordinary development
3259 work, not just for debugging SBCL itself.
3260 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3261 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3262 that currently-defined functions might be redefined later with
3263 different return types.
3264 * Hash tables can be printed readably, as inspired by CMU CL code
3265 of Eric Marsden and SBCL code of Martin Atzmueller.
3266 * better error handling in CLOS method combination, thanks to
3267 Martin Atzmueller porting Pierre Mai's CMU CL patches
3268 * more overflow fixes for >16Mbyte I/O buffers
3269 * A bug in READ has been fixed, so that now a single Ctrl-D
3270 character suffices to cause end-of-file on character streams.
3271 In particular, now you only need one Ctrl-D at the command
3272 line (not two) to exit SBCL.
3273 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3275 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3276 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3277 does the right thing.
3278 * The implementation of some type tests, especially for CONDITION
3279 types, is now tidier and maybe faster, due to CMU CL code
3280 originally by Douglas Crosher, ported by Martin Atzmueller.
3281 * Some math functions have been fixed, and there are new
3282 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3283 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3284 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3285 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3286 likely to be built into sbcl-0.7.0.)
3287 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3288 CL, ported to SBCL by Martin Atzmueller)
3289 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3290 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3291 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3292 * There's a new slam.sh hack to shorten the edit/compile/debug
3293 cycle for low-level changes to SBCL itself, and a new
3294 :SB-AFTER-XC-CORE target feature to control the generation of
3295 the after-xc.core file needed by slam.sh.
3296 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3297 COMPILE-FILE is no longer supported, so that now every function
3298 gets an entry point, so that block compilation looks a little
3299 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3300 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3301 returns the number of bytes consed since the system started,
3302 rather than the number consed since the first time the function
3303 was called. (The new definition parallels ANSI functions like
3304 CL:GET-INTERNAL-RUN-TIME.)
3305 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3306 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3307 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3308 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3309 * Fasl file version numbers are now independent of the target CPU,
3310 since historically most system changes which required version
3311 number changes have affected all CPUs equally. Similarly,
3312 the byte fasl file version is now equal to the ordinary
3315 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3316 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3317 is no longer recognized. I apologize for this, because it was
3318 listed in SB-EXT as a supported extension, but I found that
3319 its existing behavior was poorly specified, as well as incorrectly
3320 specified, and it looked like too much of a mess to straighten it
3321 out. I have enough on my hands trying to get ANSI stuff to work..
3322 * many patches ported from CMU CL by Martin Atzmueller, with
3323 half a dozen bug fixes in pretty-printing and the debugger, and
3324 half a dozen others elsewhere
3325 * fixed bug 13: Floating point infinities are now supported again.
3326 They might still be a little bit flaky, but thanks to bug reports
3327 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3328 as flaky as they were.
3329 * The --noprogrammer command line option is now supported. (Its
3330 behavior is slightly different in detail from what the old man
3331 page claimed it would do, but it's still appropriate under the
3332 same circumstances that the man page talks about.)
3333 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3334 are now supported, and enabled by default. Thus, the compiler can
3335 handle many floating point and complex operations much less
3336 inefficiently. (Thus e.g. you can implement a complex FFT
3338 * The compiler now detects type mismatches between DECLAIM FTYPE
3339 and DEFUN better, and implements CHECK-TYPE more correctly, and
3340 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3341 thanks to patches from Martin Atzmueller.
3342 * various fixes to make the cross-compiler more portable to
3343 ANSI-conforming-but-different cross-compilation hosts (notably
3344 Lispworks for Windows, following bug reports from Arthur Lemmens)
3345 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3346 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3347 fixed thanks to Pierre Mai's CMU CL patches.
3348 * fixes to keep the system from overflowing internal counters when
3349 it tries to use i/o buffers larger than 16M bytes
3350 * fixed bug 45a: Various internal functions required to support
3351 complex special functions have been merged from CMU CL sources.
3352 (When I was first setting up SBCL, I misunderstood a compile-time
3353 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3354 * improved support for type intersection and union, fixing bug 12
3355 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3356 more obscure bugs as well
3357 * some steps toward byte-compiling non-performance-critical
3358 parts of the system, courtesy of patches from Martin Atzmueller
3359 * Christophe Rhodes has made some debian packages of sbcl at
3360 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3361 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3362 stable, but are nonetheless usable. When he's ready, I'd be happy
3363 to add them to the SourceForge "File Releases" section. (And if
3364 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3365 * new fasl file format version number (because of changes in
3366 internal representation of (OR ..) types to accommodate the new
3367 support for (AND ..) types, among other things)
3369 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3370 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3372 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3374 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3375 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3376 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3377 * DESCRIBE now works on structure objects again.
3378 * Most function call argument type mismatches are now handled as
3379 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3380 know whether the function will be redefined before the call is
3381 executed. (The compiler could flag local calls with full WARNINGs,
3382 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3383 it doesn't keep track of enough information to know whether calls
3384 are local in this sense.)
3385 * Compiler output is now more verbose, with messages truncated
3386 later than before. (There should be some supported way for users
3387 to override the default verbosity, but I haven't decided how to
3388 provide it yet, so this behavior is still controlled by the internal
3389 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3390 src/compiler/ir1util.lisp.)
3391 * Fasl file format version numbers have increased again, because
3392 support for the Gray streams extension changes the layout of the
3393 system's STREAM objects.
3394 * The Gray subclassable streams extension now works, thanks to a
3395 patch from Martin Atzmueller.
3396 * The full LOAD-FOREIGN extension (not just the primitive
3397 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3398 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3399 but like most other programs, it defaults to copying the Unix
3400 environment from the original process instead of starting the
3401 new process in an empty environment.
3402 * Extensions which manipulate the Unix environment now support
3403 an :ENVIRONMENT keyword option which doesn't smash case or
3404 do other bad things. The CMU-CL-style :ENV option is retained
3405 for porting convenience.
3406 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3407 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3409 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3411 * A patch from Martin Atzmueller seems to have solved the SIGINT
3412 problem, and as far as we know, signal-handling now works cleanly.
3413 (If you find any new bugs, please report them!)
3414 * The system no longer defaults Lisp source file names to types
3415 ".l", ".cl", or ".lsp", but only to ".lisp".
3416 * The compiler no longer uses special default file extensions for
3417 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3418 seems to expect a single default extension for all compiled code,
3419 and there's no compelling reason to try to stretch the standard
3420 to allow two different extensions.) Instead, byte-compiled files
3421 default to the same extension as native-compiled files.
3422 * Fasl file format version numbers have increased again, because
3423 a rearrangement of internal implementation packages made some
3424 dumped symbols in old fasl files unreadable in new cores.
3425 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3426 many fewer weird special cases.
3427 * Bug #17 (differing COMPILE-FILE behavior between logical and
3428 physical pathnames) has been fixed, and some related misbehavior too,
3429 thanks to a patch from Martin Atzmueller.
3430 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3431 by Tim Moore, ported to SBCL by Martin Atzmueller.
3432 * Martin Atzmueller fixed several filesystem-related problems,
3433 including bug #36, in part by porting CMU CL patches, which were
3434 written in part by Paul Werkowski.
3435 * More compiler warnings in src/runtime/ are gone, thanks to
3436 more patches from Martin Atzmueller.
3437 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3440 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3442 * DESCRIBE now works on CONDITION objects.
3443 * The debugger now handles errors which arise when trying to print
3444 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3446 * The build system now uses an additional file, customize-target-features.lisp,
3447 to allow local modifications to the target *FEATURES* list. (The point of
3448 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3449 debugging features enabled, without having to worry about propagating it
3450 into everyone's system when I do a "cvs update".) When no
3451 customize-target-features.lisp file exists, the target *FEATURES* list
3452 should be constructed the same way as before.
3453 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3454 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3455 warn about behavior which is undefined under the ANSI spec. Note: This
3456 is specified by ANSI, but it's not very popular with programmers.
3457 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3458 macro in the SBCL sources for an example of a workaround which you
3459 might use to make portable ANSI-standard code which does what you want.
3460 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3461 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3462 when it's used as a non-toplevel form. (This is required in order
3463 to implement the DEFCONSTANT-EQX macro.)
3464 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3465 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3466 funny things, due to bugs in the implementation of EVAL-WHEN
3467 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3468 non-toplevel DEFCONSTANTs are uncommon.)
3469 * The core file version number and fasl file version number have been
3470 incremented, because the old noncompliant DEFCONSTANT behavior involved
3471 calling functions which no longer exist, and because I also took the
3472 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3473 * fixed bug 1 (error handling before read-eval-print loop starts), and
3474 redid debugger restarts and related debugger commands somewhat while
3476 ** The QUIT debugger command is gone, since it did something
3477 rather different than the SB-EXT:QUIT command, and since it never
3478 worked properly outside the main toplevel read/eval/print loop.
3479 Invoking the new TOPLEVEL restart provides the same functionality.
3480 ** The GO debugger command is also gone, since you can just invoke
3481 the CONTINUE restart directly instead.
3482 ** The TOP debugger command is also gone, since it's redundant with the
3483 FRAME 0 command, and since it interfered with abbreviations for the
3485 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3487 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3488 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3489 some porting work by Martin Atzmueller)
3490 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3491 with a boatload of patches which he ported to SBCL. Now that those
3493 ** The system tries to make sure that its low-priority messages
3494 are prefixed by semicolons, to help people who like to use
3495 syntax highlighting in their ILISP buffer. (This patch
3496 was originally due to Raymond Toy.)
3497 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3498 patches originally written by Raymond Toy.
3499 ** The compiler understands coercion between single-value and
3500 multiple-VALUES type expressions better, getting rid of some very
3501 weird behavior, thanks to patches originally by Robert MacLachlan
3502 and Douglas Crosher.
3503 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3504 lambda lists, thanks to a patch originally by Pierre Mai.
3505 ** The system no longer bogusly warns about "abbreviated type
3507 ** The compiler gets less confused by inlining and RETURN-FROM,
3508 thanks to some patches originally by Tim Moore.
3509 ** The system no longer hangs when dumping circular lists to fasl
3510 files, thanks to a patch originally from Douglas Crosher.
3511 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3512 undefined function error.
3513 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3514 in structure slot initforms) for now, documented workaround instead:-|
3515 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3516 * fixed bug 5: added stubs for various Gray stream functions called
3517 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3518 installed, at least appropriate type errors are generated
3519 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3520 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3521 consistently in DEFMETHOD forms.
3522 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3523 it doesn't seem to affect SBCL after all
3524 * The C runtime system now builds with better optimization and many
3525 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3527 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3529 * The system is now under CVS at SourceForge (instead of the
3530 CVS repository on my home machine).
3531 * The new signal handling code has been tweaked to treat register
3532 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3533 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3534 downstream, e.g. in debug-int.lisp, has implicit dependencies
3535 on the unsignedness of integer representation of machine words,
3536 and that caused the system to bomb out with infinite regress
3537 when trying to recover from type errors involving signed values,
3538 e.g. (BUTLAST '(1 2 3) -1).)
3539 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3540 (This was one of the bugs Peter Van Eynde reported back in July.)
3541 * The system now uses code inspired by Colin Walters' O(N)
3542 implementation of MAP (from the cmucl-imp@cons.org mailing
3543 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3544 inline the MAP operation, and there is more than one
3545 sequence argument to the MAP call (so that it can't just
3546 do ETYPECASE once and for all based on the type of the
3547 single sequence argument). (The old non-inline implementation
3548 of the general M-argument sequence-of-length-N case required
3549 O(M*N*N) time when any of the sequence arguments were LISTs.)
3550 * The QUIT :UNIX-CODE keyword argument has been renamed to
3551 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3552 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3554 * Raymond Wiker's patches to port dynamic loading from Linux to
3555 FreeBSD have been added.
3556 * The BUGS file is now more nearly up to date, thanks in large part
3557 to Martin Atzmueller's review of it.
3558 * The debugger now flushes standard output streams before it begins
3559 its output ("debugger invoked" and so forth).
3560 * The core version number and fasl file version number have both
3561 been incremented, because of incompatible changes in the layout
3563 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3564 used to not be called for a saved Lisp image.)
3565 * Martin Atzmueller's version of a patch to fix a compiler crash,
3566 as posted on sbcl-devel 13 September 2000, has been installed.
3567 * Instead of installing Martin Atzmueller's patch for the
3568 compiler transform for SUBSEQ, I deleted the compiler transform,
3569 and transforms for some similar consing operations.
3570 * A bug in signal handling which kept TRACE from working on OpenBSD
3572 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3573 away by constant folding
3574 * The system now defines its address space constants in one place
3575 (in the Lisp sources), and propagates them automatically elsewhere
3576 (through GENESIS and the sbcl.h file). Therefore, patching the
3577 address map is less unnecessarily tedious and error-prone. The
3578 Lisp names of address space constants have also been systematized.
3579 * CVS tags like dollar-Header-dollar have been removed from
3580 the sources, because they have never saved me trouble and
3581 they've been source of trouble working with patches and other
3582 diff-related operations.
3583 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3584 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3586 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3588 * The system has been ported to OpenBSD.
3589 * The system now compiles with a simple "sh make.sh" on the systems
3590 that it's supported on. I.e., now you no longer need to tweak
3591 text in the target-features.lisp-expr and symlinks in src/runtime/
3592 by hand, the make.sh takes care of it for you.
3593 * The system is no longer so grossly inefficient when compiling code
3594 involving vectors implemented as general (not simple) vectors (VECTOR T),
3595 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3596 which dares to use the various sequence functions on non-simple
3597 vectors, takes less of a performance hit.
3598 * There is now a primitive type predicate VECTOR-T-P
3599 to test for the (VECTOR T) type, so that e.g.
3600 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3601 can now be compiled with some semblance of efficiency. (The old code
3602 turned the type declaration into a full call to %TYPEP at runtime!)
3603 * AREF on (VECTOR T) is still not fast, since it's still compiled
3604 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3605 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3606 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3607 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3608 without making full calls to SUBTYPEP at runtime.
3609 (Some analogous efficiency issues for non-simple vectors specialized to
3610 element types other than T, or for non-simple multidimensional arrays,
3611 have not been addressed. They could almost certainly be handled the
3612 same way if anyone is motivated to do so.)
3613 * The changes in array handling break binary compatibility, so
3614 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3615 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3616 instead of (VALUES T T).
3617 * By following the instructions that Dan Barlow posted to sbcl-devel
3618 on 2 July 2000, I was able to enable primitive dynamic object
3619 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3620 functionality is not implemented (since it calls ld to resolve
3621 library references automatically, requiring RUN-PROGRAM for its
3622 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3623 try to resolve library references) is now supported.
3624 * The system now flushes the standard output streams when it terminates,
3625 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3626 them at several other probably-convenient times, e.g. in each pass of
3627 the toplevel read-eval-print loop, and after evaluating a form given
3628 as an "--eval" command-line option. (These changes were motivated by a
3629 discussion of stream flushing issues on cmucl-imp in August 2000.)
3630 * The source transform for TYPEP of array types no longer assumes
3631 that an array whose element type is a not-yet-defined type
3632 is implemented as an array of T, but instead punts, so that the
3633 type will be interpreted at runtime.
3634 * There is now some support for cross-compiling in make.sh: each of
3635 the phases of make.sh has its own script. (This should be transparent
3636 to people doing ordinary, non-cross-compile builds.)
3637 * Since my laptop doesn't have hundreds of megabytes of memory like
3638 my desktop machine, I became more motivated to do some items on
3639 my to-do list in order to reduce the size of the system a little:
3640 ** Arrange for various needed-only-at-cold-init things to be
3641 uninterned after cold init. To support this, those things have
3642 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3643 symbols with such names are now uninterned after cold init).
3644 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3645 fasl files for cold load.
3646 ** Remove the old compiler structure pooling code (which used to
3647 be conditional on the target feature :SB-ALLOC) completely.
3648 ** Redo the representation of some data in cold init to be more compact.
3649 (I also looked into supporting byte compiled code at bootstrap time,
3650 which would probably reduce the size of the system a lot, but that
3651 looked too complicated, so I punted for now.)
3652 * The maximum signal nesting depth in the src/runtime/ support code has
3653 been reduced from 4096 to 256. (I don't know any reason for the very
3654 large old value. If the new smaller value turns out to break something,
3655 I'll probably just bump it back up.)
3656 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3658 * Many, many bugs reported by Peter Van Eynde have been added to
3659 the BUGS list; some have even been fixed.
3660 * While enabling dynamic object file loading, I tried to make the
3661 code easier to understand, renaming various functions and variables
3662 with less ambiguous names, and changing some function calling
3663 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3664 * While trying to figure out how to do the OpenBSD port, I tried to
3665 clean up some of the code in src/runtime/. In particular, I dropped
3666 support for non-POSIX signal handling, added various comments,
3667 tweaked the code to reduce the number of compilation warnings, and
3668 renamed some files to increase consistency.
3669 * To support the new automatic configuration functionality in make.sh,
3670 the source file target-features.lisp-expr has been replaced with the
3671 source file base-target-features.lisp-expr and the machine-generated
3672 file local-target-features.lisp-expr.
3673 * fixed a stupid quoting error in make.sh so that using CMU CL
3674 "lisp -batch" as cross-compilation host works again
3676 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3678 * DESCRIBE no longer tries to call itself recursively to describe
3679 bound/fbound values, so that it no longer fails on symbols which are
3680 bound to themselves (like keywords, T, and NIL).
3681 * DESCRIBE now works on generic functions.
3682 * The printer now prints less-screwed-up representations of closures
3683 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3684 * A private symbol is used instead of the :EMPTY keyword previously
3685 used to mark empty slots in hash tables. Thus
3686 (DEFVAR *HT* (MAKE-HASH-TABLE))
3687 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3688 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3689 now does what ANSI says that it should. (You can still get
3690 similar noncompliant behavior if bang on the hash table
3691 implementation with all the symbols you get back from
3692 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3693 This breaks binary compatibility, since tests for equality to
3694 :EMPTY are wired into things like the macroexpansion of
3695 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3697 * There's now a minimal placeholder implementation for CL:STEP,
3698 as required by ANSI.
3699 * An obscure bug in the interaction of the normal compiler, the byte
3700 compiler, inlining, and structure predicates has been patched
3701 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3702 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3704 * Missing ordinary arguments in a macro call are now detected even
3705 when the macro lambda list contains &KEY or &REST.
3706 * The debugger no longer complains about encountering the top of the
3707 stack when you type "FRAME 0" to explicitly instruct it to go to
3708 the top of the stack. And it now prints the frame you request even
3709 if it's the current frame (instead of saying "You are here.").
3710 * As specified by ANSI, the system now always prints keywords
3711 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3713 * The default initial SIZE of HASH-TABLEs is now smaller.
3714 * Type information from CLOS class dispatch is now propagated
3715 into DEFMETHOD bodies, so that e.g.
3716 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3718 is now basically equivalent to
3719 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3720 (DECLARE (TYPE SINGLE-FLOAT X))
3722 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3723 operation, without having to do run-time type dispatch.
3724 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3725 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3726 * Since I don't seem to be making big file reorganizations very often
3727 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3728 is overflowing my ability to conveniently back them up), I've finally
3729 checked the system into CVS. (The CVS repository is on my home system,
3730 not at SourceForge -- putting it on SourceForge might come later.)
3731 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3732 high-level GC-NOTIFY-FOO functions send their output. (There's
3733 still very little control of where low-level verbose GC functions
3734 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3735 less than it used to -- the GC-NOTIFY-FOO functions are now under
3736 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3737 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3738 in only one place in the source code, and propagates it automatically
3739 everywhere that it's needed. Thus e.g. when I bump the version from
3740 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3741 * The C source files now include boilerplate legalese and documentation
3742 at the head of each file (just as the Lisp source files already did).
3743 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3744 to his page will be replaced with a link to his new CLiki service.
3746 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3748 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3749 * The build process now looks for GNU make under the default name "gmake",
3750 instead of "make" as it used to. If GNU make is not available as "gmake"
3751 on your system, you can change this default behavior by setting the
3752 GNUMAKE environment variable.
3753 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3754 can build without error under CMU CL.
3756 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3758 * There is now a partial SBCL user manual (with some new text and some
3759 text cribbed from the CMU CL manual).
3760 * The beginnings of a profiler have been added (starting with the
3761 CMU CL profiler and simplifying and cleaning up). Eventually the
3762 main interface should be through the TRACE macro, but for now,
3763 it's still accessed through vaguely CMU-CL-style functions and macros
3764 exported from the package SB-PROFILE.
3765 * Some problems left over from porting CMU CL to the new
3766 cross-compilation bootstrap process have been cleaned up:
3767 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3768 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3769 part when getting rid of the compiler *BACKEND* stuff.)
3770 ** The value of *NULL-TYPE* was screwed up, because it was
3771 being initialized before the type system knew the final
3772 definition of the 'NULL type. This screwed up several key
3773 optimizations in the compiler, causing inefficiency in all sorts
3774 of places. (I found it because I wanted to understand why
3775 GET-INTERNAL-RUN-TIME was consing.)
3776 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3777 PROCLAIM FTYPE information. Unfortunately this broke binary
3778 compatibility again, since now the forms output by DEFGENERIC
3779 to refer to functions which didn't exist in 0.6.3.
3780 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3781 can use the new (as of 0.6.3) transform for SOME into MAP into
3783 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3784 values to (INTEGER 0 1000000), so that the time code will no longer
3785 occasionally get blown up by Linux returning 1000000 microseconds
3786 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3787 its output conform to the ANSI spec. (Alas, this makes its output
3788 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3789 * A full call to MAP NIL with a single sequence argument no longer conses.
3790 * fixes to problems pointed out by Martin Atzmueller:
3791 * The manual page no longer talks about multiprocessing as though
3792 it were currently supported.
3793 * The ILISP support patches have been removed from the distribution,
3794 because as of version 5.10.1, ILISP now supports SBCL without us
3795 having to maintain patches.
3796 * added a modified version of Raymond Toy's recent CMU CL patch for
3797 EQUALP comparison of HASH-TABLE
3799 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3801 * The system still can't cross-compile itself with
3802 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3803 entails), but at least it can compile more of itself that way
3804 than it used to be able to, and various buglets which were uncovered
3805 by trying to cross-compile itself that way have now been fixed.
3806 * This release breaks binary compatibility again. This time
3807 at least I've incremented the FASL file format version to 2, so that the
3808 problem can be detected reliably instead of just causing weird errors.
3809 * various new style warnings:
3810 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3811 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3812 ** using the lexical binding of a variable named in the *FOO* style
3813 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3814 as specified by ANSI.
3815 * *RANDOM-STATE* is no longer automatically initialized from
3816 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3817 default behavior of the system is to repeat its behavior every time
3818 it's run. If you'd like to change this behavior, you can always
3819 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3820 old convention there was no comparably easy way to get the system to
3821 repeat its behavior every time it was run.
3822 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3823 FTYPE declarations has been removed, in favor of their ANSI
3824 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3825 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3826 the types of their sequence arguments can be determined at compile time.
3827 This is done through a new open code expansion for MAP which eliminates
3828 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3829 argument types can be determined at compile time.
3830 * The optimizer now transforms COERCE into an identity operation when it
3831 can prove that the coerced object is already of the correct type. (This
3832 can be a win for machine generated code, including the output of other
3833 optimization transforms, such as the MAP transform above.)
3834 * Credit information has been moved from source file headers into CREDITS.
3835 * Source file headers have been made more standard.
3836 * The CASE macro now compiles without complaining even when it has
3839 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3841 * (Note that the way that the PCL macroexpansions were rewritten
3842 to accommodate the change in DEFGENERIC below breaks binary
3843 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3844 not run under sbcl-0.6.2. Once we get out of alpha releases,
3845 i.e. hit release 1.0.0, we'll probably try to maintain binary
3846 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3847 and sbcl-1.4.4. Until then, however, it might be fairly common
3848 for maintenance releases to break binary compatibility.)
3849 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3851 * The reporting of unhandled signals has been changed to print some
3852 explanatory text as well as the report form. (Previously only
3853 the report form was printed.)
3854 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3855 it defines, so that the compiler no longer issues undefined function
3856 warnings for compiled-but-not-yet-loaded generic functions.
3857 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3858 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3859 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3860 section of the ANSI spec are supported.
3861 * The "" nickname for the "KEYWORD" package has been removed.
3862 The reader still handles symbol tokens which begin with a package marker
3863 as keywords, but it doesn't expose its mechanism for doing so in the
3864 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3865 * The system now issues STYLE-WARNINGs for contradictory TYPE
3866 proclamations. (Warnings for contradictory FTYPE proclamations would
3867 be nice too, but those can't be done usefully unless the type system
3868 is made smarter about FUNCTION types.)
3869 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3870 systematized, so that "*target-*.lisp is supposed to exist only on the
3871 target and imply that there's a related file which exists on the
3872 host, and *host-*.lisp is supposed to exist only on the host and imply
3873 that there's a related file which exists on the target. This involves a
3874 lot of renaming. Hopefully the acute confusion caused by the renaming
3875 will be justified by the reduction in chronic confusion..
3876 ** runtime-type.lisp -> early-target-type.lisp
3877 ** target-type.lisp -> late-target-type.lisp
3878 ** early-host-format.lisp -> early-format.lisp
3879 ** late-host-format.lisp -> late-format.lisp
3880 ** host-error.lisp -> misc-error.lisp
3881 ** early-error.lisp -> early-target-error.lisp
3882 ** late-error.lisp -> late-target-error.lisp
3883 ** host-defboot.lisp -> early-defboot.lisp
3884 ** code/misc.lisp -> code/target-misc.lisp
3885 ** code/host-misc.lisp -> code/misc.lisp
3886 ** code/numbers.lisp -> code/target-numbers.lisp
3887 ** code/early-numbers.lisp -> numbers.lisp
3888 ** early-host-type.lisp -> early-type.lisp
3889 ** late-host-type.lisp -> late-type.lisp
3890 ** host-typep.lisp -> typep.lisp
3891 ** load.lisp -> target-load.lisp
3892 ** host-load.lisp -> load.lisp
3893 ** host-disassem.lisp -> disassem.lisp
3894 ** host-insts.lisp -> insts.lisp
3895 ** byte-comp.lisp -> target-byte-comp.lisp
3896 ** host-byte-comp.lisp -> byte-comp.lisp
3897 ** host-signal.lisp -> signal.lisp
3898 ** host-defstruct.lisp -> defstruct.lisp
3899 ** late-target-type.lisp -> deftypes-for-target.lisp
3900 Furthermore, several other previously target-only files foo.lisp (e.g.
3901 hash-table.lisp and random.lisp) have been split into a target-and-host
3902 foo.lisp file and a target-only target-foo.lisp file, with their key type
3903 definitions in the target-and-host part, so that the cross-compiler will
3904 know more about target types.
3905 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3906 gone away. In their place are various *BACKEND-FOO* variables
3907 corresponding to the slots of the old structure.
3908 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3909 into the target SBCL has been fixed.
3910 * The chill.lisp system for loading cold code into a running SBCL
3912 * Support for the CMU CL "scavenger hook" extension has been removed.
3913 (It was undocumented and unused in the CMU CL sources that SBCL was
3914 derived from, and stale in sbcl-0.6.1.)
3915 * Various errors in the cross-compiler type system were detected
3916 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3917 (enabling various consistency checks). Many of them were fixed,
3918 but some hard problems remain, so the compiler is back to
3919 running without *TYPE-SYSTEM-INITIALIZED* for now.
3920 * As part of the cross-compiler type system cleanup, I implemented
3921 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3922 * I have started adding UNCROSS calls throughout the type system
3923 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3924 on cross-compiler input files will be able to go away, and various
3926 * CONSTANTP now returns true for quoted forms (as explicitly required
3929 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3931 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3932 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3933 (MAKE-LIST -1). In the longer term, it ought to become true
3934 that declarations are assertions even at SAFETY 1. For now, it's not
3935 quite true even at SAFETY 3, but it's at least more nearly true..
3936 (Note that this change seems to increases the size of the system by
3937 O(5%) and to decrease the speed of the compiler by 20% or more.)
3938 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3939 for the problem of printing dozens of lines of distracting information
3940 about low-level system machinery as part of the top stack frame
3941 on entry to the debugger when an undefined function was called.
3942 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3943 is not reset to COMMON-LISP-USER.
3944 * Compilation of stuff related to dyncount.lisp has been made conditional
3945 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3946 smaller. The various dyncount-related symbols have been moved into
3947 a new "SB-DYNCOUNT" package.
3948 * tty-inspect.lisp has been renamed to inspect.lisp.
3949 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3950 feature has gone away. (When we eventually port to other flavors of
3951 libc and/or Unix, we'll try to make the differences between flavors
3952 invisible at the user level.)
3953 * Various other *FEATURES* tags, and/or their associated conditionals,
3954 have been removed if obsolescent, or given better documentation, or
3955 sometimes given more-mnemonic names.
3957 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3959 * tidied up "make.sh" script
3960 * tidied up system directory structure
3961 * better "clean.sh" behavior
3962 * added doc/FOR-CMUCL-DEVELOPERS
3963 * many many small tweaks to output format, e.g. removing possibly-confusing
3964 trailing #\. character in DESCRIBE-INSTANCE
3965 * (EQUALP #\A 'A) no longer signals an error.
3966 * new hashing code, including EQUALP hashing
3967 * tidied up Lisp initialization and toplevel
3968 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
3969 * command line argument processing
3970 * added POSIX-GETENV function to deal with Unix-ish environment variables
3971 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
3972 terminating SBCL on EOF
3973 * non-verbose GC by default
3974 * There is no more "sbcl" shell script; the sbcl file is now the C
3975 runtime executable (just like CMU CL).
3976 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3978 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3979 symbol and package information as Lisp native symbol and package objects
3980 instead of strings naming symbols and strings naming packages. This way,
3981 whenever packages are renamed (as in warm init), debug information is
3982 transformed along with everything else.
3983 * tweaked the optimization policy declarations which control the building
3984 of SBCL itself. Now, among other things, the system no longer saves
3985 source location debugging information. (This helps two problems at once
3986 by reducing SBCL size and by keeping SBCL from trying to look for its
3987 sources -- which may not exist -- when reporting errors.)
3988 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3989 debugging and testing purposes
3990 * cleaned up printing, making the printer call PRINT-OBJECT for
3991 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3992 methods, giving nearly-ANSI behavior
3993 * converted almost all special variables to use *FOO* naming convention
3994 * deleted PARSE-TIME functionality, since it can be done portably
3995 * moved some files out of cold init into warm init
3996 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3998 * regularized formatting of source files
3999 * added an install.sh script
4000 * fixed ridiculous memory usage of cross-compiler by making
4001 compiler/alloc.lisp not try to do pooling unless it can hook
4002 itself into the GC of the cross-compilation host. Now the system
4003 builds nicely on my old laptop.
4004 * added :SB-ALLOC in target-features.lisp-expr
4005 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4006 was not implemented)
4007 * re-did condition handling and note reporting in the compiler. Notes
4008 are no longer handled by signalling conditions. Style warnings
4009 and warnings are handled more correctly and reported in such a way
4010 that it's easy to find one or the other in your output (so that you
4011 can e.g. figure out which of many problems caused COMPILE-FILE to
4013 * changed the severity of several compiler warnings from full WARNING
4014 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4015 compiler note reporting so that it doesn't use the condition system
4016 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4017 COMPILE-FILE command)
4018 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4019 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4020 no longer supported, since their implementation was deeply intertwingled
4021 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4022 * removed bogus "support" for compiler macros named (SETF FOO), and
4023 removed the compiler macro for SETF INFO (but only after making a fool
4024 of myself on the cmucl-imp mailing list by posting a bogus patch for
4025 DEFINE-COMPILER-MACRO..)
4026 * Compiled files containing forms which have side effects on the Lisp
4027 reader (such as DEFPACKAGE forms) are now handled more correctly.
4028 (Compiler queuing of top level lambdas has been suppressed by setting
4029 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4030 * deleted various currently-unused source files, e.g. gengc.lisp. They
4031 may be added back at some point e.g. when porting to other architectures,
4032 but until they are it's distracting to distribute them and to try to
4034 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4035 there were so many of them they're just distractions, and UNCROSS is
4036 known to be able to handle the current sources
4037 * moved PROFILE functionality into TRACE, so that it will be clear
4038 how the wrapping and unwrapping of functions when you profile them
4039 interacts with the wrapping and unwrapping of functions when you
4040 trace them. (Actually, the functionality isn't there yet, but at least
4041 the interface specification is there. Hopefully, the functionality will
4042 arrive with some future maintenance release.)
4043 * removed host-oops.lisp
4044 * changed signature of QUIT function to allow UNIX-CODE argument
4045 * fixed READ-SEQUENCE bug
4046 * tweaked verbose GC output so that it looks more like the progress
4047 output that ANSI specifies for functions like LOAD
4048 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4049 * added <http://sbcl.sourceforge.com> to the banner information printed by