1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
3 * improvement: experimental support for mach exception handling on
4 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
6 * improvement: support for GBK external format.
7 (thanks to Chun Tian (binghe))
8 * improvement: the debugger now displays variables that have been closed
9 over, in code compiled with (DEBUG 2) or higher
10 * improvement: support for executable cores on NetBSD (thanks to
12 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
13 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
14 (thanks to Tony Martinez)
15 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
16 evaluated once (reported by Kevin Reid)
18 changes in sbcl-1.0.1 relative to sbcl-1.0:
19 * new platform: FreeBSD/x86-64, including support for threading.
20 * new feature: the compiler stores cross-referencing information
21 abount function calls (who-calls), macroexpansion (who-macroexpands)
22 and special variables (who-binds, who-sets, who-references) for code
23 compiled with (< SPACE 3). This information is available through the
24 sb-introspect contrib.
25 * new feature: users may subclass SEQUENCE, and have instances of
26 these classes interoperate with standard Common Lisp functions if
27 a number of methods are defined. (This feature is experimental
28 and the interface subject to change based on feedback from SBCL
29 users and the general community)
30 * improvement: sb-sprof traces call stacks to an arbitrary depth on
31 x86/x86-64, rather than the previous fixed depth of 8
32 * improvement: another pthread back-end of mutex "pthread-futex".
33 * bug fix: non-ascii command-line arguments are processed correctly
34 (thanks to Yaroslav Kavenchuk)
35 * bug fix: non-required arguments were not passed correctly when a method
36 defined using DEFMETHOD was called from a mop-generated method using
37 CALL-NEXT-METHOD (reported by Pascal Costanza)
38 * bug fix: recursion is now permitted in accessors through
39 SLOT-UNBOUND. (reported by Pascal Costanza)
40 * bug fix: an error was signaled at startup if the HOME environment
41 variable was defined, but had an empty value (reported by Peter Van Eynde)
42 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
43 signal a PROGRAM-ERROR, not a BUG.
44 * bug fix: SB-POSIX:READDIR works when built with large file support.
45 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
47 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
48 for better automatic indentation support. (thanks to Matt Pillsbury)
49 * optimization: loading generic functions no longer takes O(n^2) time,
50 proportional to the amount of methods in the generic function
51 (reported by Todd Sabin and Jeremy Brown)
52 * optimization: the FIND and POSITION family of sequence functions
53 are significantly faster on arrays whose element types have been
55 * improvements to the Windows port:
56 ** Intermittent heap corruption problems have been fixed. (thanks
57 to Alastair Bridgewater)
58 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
60 ** Lisp is able to unwind foreign exception frames from alien
61 callbacks. (thanks to Alastair Bridgewater)
63 changes in sbcl-1.0 relative to sbcl-0.9.18:
64 * improvement: experimental support for threading on FreeBSD/x86.
65 (thanks to NIIMI Satoshi)
66 * improvement: runtime option --dynamic-space-size can be used
67 to set the size of the dynamic space reserved on startup.
68 * improvement: floating point modes in effect are now saved in
69 core, and restored on startup.
70 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
71 startup, not time since first call to GET-INTERNAL-REAL-TIME.
72 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
73 threads are not running after *SAVE-HOOKS* have run.
74 * improvement: writes to CLOS instance slots are type-checked in code
75 compiled with (SAFETY 3)
76 * improvement: floating-point exception handling on FreeBSD (thanks to
78 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
79 (thanks to Zach Beane)
80 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
82 * improvement: added support for the Shift-JIS external format.
83 (contributed by NIIMI Satoshi)
84 * improvement: callbacks are supported on Linux/PPC. (thanks to
86 * bug fix: compiler bug triggered by a (non-standard) VALUES
87 declaration in a LET* was fixed. (reported by Kaersten Poeck)
88 * bug fix: file compiler no longer confuses validated and already
89 dumped structurres. (reported by Kaersten Poeck)
90 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
91 fill-pointer signals a type-error as required. (thanks to
93 * bug fix: disassemly of funcallable instances works.
94 * bug fix: single stepping on PPC.
95 * bug fix: fix thread-safety problems in the type system (generally
96 manifesting as nonsensical errors like "STRING is a bad type specifier
97 for sequences" or "The value 1 is not of type FIXNUM")
98 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
99 (reported by Josip Gracin)
100 * bug fix: an error is signaled for attempts to displace arrays with
101 incompatible element types (thanks to Mario Mommer)
102 * bug fix: more correct handling of wide characters in debug info
103 (bug reported by Attila Lendvai and fixed by Juho Snellman)
104 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
105 and don't cause extra consing
106 * optimization: MAP and MAP-INTO are significantly faster on vectors
107 whose elements types have been declared.
108 * Improvements to SB-SPROF:
109 ** Support for allocation profiling
110 ** Reduced profiling overhead, especially for long profiling runs
111 * Improvements to the Windows port:
112 ** floating point exceptions are now reported correctly.
113 ** stack exhaustion detection works partially.
114 ** more accurate GET-INTERNAL-REAL-TIME.
115 ** better RUN-PROGRAM behaviour in case of errors in the child
117 ** PROBE-FILE now simplifies pathnames correctly.
118 ** DIRECTORY now works correctly with :WILD-INFERIORS.
119 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
120 1st 1970 (although time timezone data will be unreliable).
121 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
123 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
124 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
125 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
127 * bug fix: two potential GC deadlocks affecting threaded builds.
128 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
129 returns T (reported by Anton Kazennikov)
130 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
131 with non-variable places
132 * bug fix: remove a race condition in the setting of
133 funcallable-instance functions, this should make threaded CLOS
134 code more stable against memory faults.
135 * bug fix: corruption of specials when unbinding is interrupted by an
136 asynchronous unwind (reported by Hannu Koivisto)
137 * improvement: the debugger will now also display local variables that
138 are only used once, for code compiled with a DEBUG optimization quality
141 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
142 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
143 * incompatible change: External-format support for FFI calls. The
144 SB-ALIEN:C-STRING no longer implies an ASCII
145 external-format. Instead the string is subject to external-format
146 conversion. Additionally return values of type SB-ALIEN:C-STRING
147 are by default of type (SIMPLE-ARRAY CHARACTER), not
148 SIMPLE-BASE-STRING. For an alien type that behaves like the old
149 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
150 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
151 * incompatible change: SB-EXT package no longer contains the
152 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
153 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
155 * incompatible change: the single-stepper is no longer available
156 on Alpha, Mips and Sparc platforms.
157 * minor incompatible change: the direct superclasses of
158 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
159 not (STANDARD-OBJECT FUNCTION). This makes the
160 class-precedence-lists of GENERIC-FUNCTION and
161 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
163 * minor incompatible change: the default stream external format on
164 non-unicode SBCL is no longer detected from the locale, but is always
166 * new feature: Add a version of evaluator that uses an interpreter instead
167 of the compiler. EVAL still uses the compiler by default, to switch it
168 to use the interpreter, set the value of the variable
169 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
170 * minor incompatible change: the single-stepper REPL has been merged
171 with the normal debugger (see the "Stepping" heading of the debugger help
172 for more details). The debugger command STEP will no longer switch
173 to the single-stepper REPL.
174 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
175 for a type now works.
176 * bug fix: loading of default sysinit file works. (thanks to Leonid
178 * bug fix: better detection of circularities in the file-compiler.
179 (reported by Marco Monteiro)
180 * bug fix: the CL pathname functions now work with files that have
181 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
182 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
183 systems with Unix98 pty semantics.
184 * bug fix: ASDF-INSTALL will now work with bsd tar.
185 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
187 * bug fix: timers expiring in dead threads no longer cause a
188 type-error (reported by Paul "Nonny Mouse").
189 * bug fix: thanks to more lightweight single-stepper instrumentation,
190 code compiled with (DEBUG 3) will compile and execute significantly faster,
191 and will have more accurate type-inferencing than before
192 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
193 whose bindings are modified
194 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
195 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
196 ** replace dummy implementations of CL:MACHINE-INSTANCE and
197 CL:SOFTWARE-VERSION with proper version
199 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
200 * feature: implemented the READER-METHOD-CLASS and
201 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
202 as specified by AMOP.
203 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
205 * optimization: faster LOGCOUNT implementation on x86 and x86-64
206 (thanks to Lutz Euler)
207 * optimization: hashing of general arrays and vectors has been
208 improved. (reported by Any Fingerhut)
209 * enhancement: SB-INTROSPECT is now able to find definitions of
210 profiled functions. (thanks to Troels Henriksen)
211 * enhancement: compiler-macro expansion applies now to FUNCALL forms
212 as well, allowing compiler-macros for SETF-functions to expand.
213 * enhancement: step-instrumentation no longer wraps known
214 single-value functions with multiple-value context, allowing
215 better type inference.
216 * fixed bug #337: use of MAKE-METHOD in method combination now works
217 even in the presence of user-defined method classes. (reported by
218 Bruno Haible and Pascal Costanza)
219 * fixed bug #339(c): if there are applicable methods not part of any
220 long-form method-combination group, call INVALID-METHOD-ERROR.
221 (reported by Bruno Haible)
222 * fixed bug #361: the :FUNCTION initarg in the protocol for
223 initialization of methods can now be used to override
224 internally-produced optimized functions. (reported by Bruno
226 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
227 system-provided lambda expression no longer cause warnings about
228 unbound #:|pv-table| symbols.
229 * bug fix: improved the handling of type declarations and the
230 detection of violations for keyword arguments with non-constant
232 * bug fix: potentially erronous calls to PATHNAME and
233 MERGE-PATHNAMES were being flushed in some cases.
234 (reported by Richard Kreuter)
235 * bug fix: compiled calls to TYPEP were mishandling obsolete
236 instances. (reported by James Bielman and Attila Lendvai)
237 * bug fix: format strings with ~> without matching ~< no longer
238 trigger an AVER, but signal an understandable error instead.
239 (reported by Antonio Martinez)
240 * bug fix: specifying an output-file without a pathname-type for
241 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
242 of input-file instead of "fasl". (reported by Robert Dodier)
243 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
244 (reported by James Y Knight).
245 * bug fix: compiler-macros-function did not consider the environment
246 argument for shadowing by local functions.
247 * bug fix: compiler-macros expansion was inhibited by local INLINE
249 * bug fix: inline expansions of known functions were subject to
250 step-instrumentation in high debug policies, leading to problems
252 * bug fix: compiler failed to differentiate between different CONS
254 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
255 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
256 * bug fix: #368: incorrect use of expressed vs. upgraded array
258 * bug fix: #306a: more precise unions of array types.
259 * thread-safety improvements:
260 ** CONDITION-WAIT could return early on Linux, if the thread was
261 interrupted and subsequently continued with SIGCONT.
262 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
264 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
265 * added support for the ucs-2 external format. (contributed by Ivan
267 * minor incompatible change: pretty printing of objects of type
268 (cons symbol) is, in the default pprint-dispatch-table, now
269 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
271 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
272 called later in a class's lifetime, possibly as late as when the
273 first instance of the class is created. Previously,
274 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
275 class became finalizeable.
276 * fixed bug: FILE-POSITION sometimes returned inconsistent results
277 for multibyte external-format streams. (thanks to "vbzoli")
278 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
279 with :ALLOCATION :CLASS inherited from superclasses of the
281 * fixed bug: anonymous classes can now be created using the :NAME
282 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
283 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
284 * fixed bug: core-files saved with :EXECUTABLE T can again be
285 executed when SBCL_HOME isn't set. (reported by James Knight)
286 * fixed bug: toplevel LOCALLY forms with declarations could
287 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
288 * fixed bug: printing from several different threads using different
289 values of *print-case* could cause invalid output, due to
290 some internal special variables of the printer not being bound
291 thread-locally (reported by Max Mikhanosha)
292 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
293 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
294 (reported by Pascal Costanza)
295 * fixed bug: FINALIZE-INHERITANCE is called from
296 REINITIALIZE-INSTANCE on classes when the class has previously
297 been finalized, as required by AMOP.
298 * minor code generation optimizations:
299 ** better register allocation in CLOS dispatching functions
300 ** overflow detection when coercing signed bytes to fixnums on x86-64
301 ** is now implemented with one IMUL instruction instead of three shifts
302 ** more efficient bit-vector access on x86 and x86-64
303 ** more efficient access to raw structure slots on x86 and x86-64
304 * fixed some bugs revealed by Paul Dietz' test suite:
305 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
308 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
309 * feature: thread support on Solaris/x86, and experimental thread support
311 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
313 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
314 default method for SLOT-UNBOUND.
315 * minor incompatible change: prevent the user from specializing the
316 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
317 somewhat counter to the intent of the protocol, I (CSR) think, and
318 additionally it just doesn't work in SBCL as currently
319 implemented, thanks to optimizations (that are always valid for
320 the other three SLOT-VALUEish functions, but not for the setter).
321 * minor incompatible change: the :SB-LDB feature is now enabled by
322 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
323 the low-level debugger.
324 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
325 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
326 down to an SB-SYS:FD-STREAM, allowing direct communication in
327 more cases. Temporary files and pipes are still used as a fallback
329 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
330 on the non-reentrant C functions localtime(3) and gmtime(3).
331 * bug fix: global optimization policy was not visible in LOCALLY and
333 * bug fix: class objects can be used as specializers in methods.
334 (reported by Pascal Costanza)
335 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
336 with a type error. (reported by blitz_ on #lisp)
337 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
338 failed with a type error. (reported by Pascal Bourguignon)
339 * bug fix: merging pathnames against defaults with :DIRECTORY
340 starting with '(:RELATIVE :BACK) should preserve the :BACK.
341 (reported by James Y Knight)
342 * bug fix: saving large (>2GB) cores on x86-64 now works
343 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
344 constant index and a (simple-array (signed-byte 32)) array
345 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
346 error (patch by Robert J. Macomber)
347 * feature: TIME now displays the amount of run-time spent in GC
348 * bug fix: The debugger now does a better job of respecting
349 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
350 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
351 workaround for bug 403.)
352 * bug fix: floating point exception handling now works on FreeBSD
353 (thanks to NIIMI Satoshi)
354 * fixed some bugs revealed by Paul Dietz' test suite:
355 ** MISC.641: LET-conversion were not supposed to work in late
357 * improvements to the Win32/x86 port:
358 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
359 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
361 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
362 * new feature: source path information is generated for macro-expansion
363 errors for use in IDE's like Slime (thanks to Helmut Eller)
364 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
365 * bug fix: compiler does not loop forever on an invalid type in
367 * improvement: compilation of most CLOS applications is significantly
369 * optimization: added a limited bytecode compiler for simple toplevel
370 forms, speeding up compilation and FASL loading
371 * bug fix: the statistical profiler now properly distinguishes anonymous
374 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
375 * minor incompatible change: in sbcl-0.9.11 (but not earlier
376 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
377 into subclasses of the finalized class. Now user calls to
378 FINALIZE-INHERITANCE finalize just the one class, and calls by the
379 system return before any subclasses are finalized.
380 * minor incompatible change: The reader no longer ignores errors
381 regarding non-existent packages in #+ and #- feature tests.
382 * new feature: command line options --no-sysinit, --no-userinit to
383 inhibit loading the corresponding init files
384 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
385 for sending data through UDP sockets (thanks to François-René Rideau)
386 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
387 error is signalled instead (thanks to François-René Rideau)
388 * minor incompatible change: Error signalling behaviour of lexical
389 operations violating package locks has changed slightly. Refer to
390 documentation on package locks for details.
391 * enhancement: EVAL can process IF-expressions without resorting to the
393 * bug fix: Some operations involving SIN, COS, or TAN weren't being
394 constant-folded properly due to missing out-of-line functions.
395 (reported by Mika Pihlajamäki)
396 * bug fix: LISTEN sometimes returned T even in cases where no data was
397 immediately available from the stream
398 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
399 were reversed. (reported by Levente Mészáros)
400 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
401 when given a vector displaced to an adjustable array. (reported
403 * bug fix: derivation of float boundaries from numbers outside the
404 appropriate float range (reported by John Wiseman)
405 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
407 * bug fix: precomputing cache entries for generic functions with
408 some subclasses of specializers as yet invalid does not attempt to
409 fill a cache line with a negative offset. (reported by Levente
411 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
412 allow condition class objects as arguments to DOCUMENTATION and
413 (SETF DOCUMENTATION); only find and set documentation for
414 structure names for the STRUCTURE doc-type. (suggested by Gary
416 * improvements to the Win32/x86 port:
417 ** (user-homedir-pathname) and default initialization file
418 locations now know about the user's "Documents and Settings"
419 directory (thanks to Yaroslav Kavenchuk)
420 ** run-program is implemented (thanks to Mike Thomas)
421 ** sockets support (thanks to Timothy Ritchey)
422 ** better backtrace support (thanks to Alastair Bridgewater)
423 ** sb-grovel supported
424 ** asdf-install and sb-posix work somewhat
425 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
426 * improvements to the Solaris/x86 port:
427 ** works on Solaris 11/Solaris Express
428 ** floating-point exception handling support
429 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
430 * fixed some bugs revealed by Paul Dietz' test suite:
431 ** REMOVE-METHOD returns its generic function argument even when
432 the method is not one of the generic functions' methods.
433 ** objects declared as MEMBER types can be admissible arguments to
435 ** printing characters should simply be printed by the FORMAT ~:C
437 ** compiler failure when compiling functions with hairy constant
438 defaults for optional parameters.
439 ** compiler produces wrong code when MAYBE-INLINE-expanding a
440 function, which is already optimized.
442 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
443 * new platform: experimental support for SBCL x86/Darwin, including
444 MacOS X 10.4.5 on Intel.
445 * new feature: Unicode character names are now known to the system
446 (through CHAR-NAME and NAME-CHAR).
447 * new feature: the filesystem location of SBCL's core file is
448 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
449 * minor incompatible change: the contrib modules SB-POSIX and
450 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
451 this change is to make it easier to distribute
452 location-independent binaries.
453 * bug fix: as implied by AMOP, standardized classes no longer have
454 slots named by external symbols of public packages. (reported by
456 * optimization: calling functions via constant symbols -- as in
457 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
458 via the function object as in (FUNCALL #'FOO).
459 * optimization: on x86 and x86-64, the calling convention for the
460 case of dealing with an unknown number of values has been altered
461 to be friendlier to the prediction heuristics implemented,
462 particularly with reference to CALL and RET pairing. (thanks to
463 Alastair Bridgewater)
464 * optimization: on x86, the code for access to thread-local symbol
465 values and binding/unbinding of thread-local symbols is smaller.
466 (thanks to Alastair Bridgewater)
467 * enhancement: CONSTANTP is now able to determine constantness of
468 more complex forms, including calls to constant-foldable standardized
469 functions and some special forms beyond QUOTE.
470 * fixed bug: occasional GC crashes on Solaris/x86
471 * optimization: x86-64 supports stack allocation of results of simple
472 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
473 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
474 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
475 (thanks to James Knight)
476 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
477 by the standard (thanks to Stephen Compall)
479 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
480 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
481 be used for bundling the runtime and the core file into one
482 executable binary. This feature is not currently supported on all SBCL
483 platforms. (thanks to James Bielman and NIIMI Satoshi)
484 * new feature: a generational or ephemeral garbage collector is now
485 the default on the PowerPC platform (both Linux and Darwin). The
486 old Cheney (stop and copy) collector is a build-time option.
487 (thanks to Cyrus Harmon, after Raymond Toy)
488 * minor incompatible change: the method by which SBCL finds its
489 contributed modules has changed; it no longer relies on symbolic
490 links from an $SBCL_HOME/systems directory, but searches directly
491 in the subdirectories of $SBCL_HOME.
492 * enhancement: the dynamic heap size on the Linux/PPC platform is
493 markedly larger, even using the older Cheney garbage collector.
494 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
495 certain complicated string types. (reported by Gary King)
496 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
497 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
498 * fixed bug: DOCUMENTATION on structures no longer signals an
499 error if no structure type of the right name exists. (reported by
501 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
502 applicable non-standard primary or :AROUND method on
503 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
504 no longer cause unbound variable errors. (reported by Kevin Reid)
505 * fixed bug: metacircle resolution in cases where methods have slots
506 added before the slots from STANDARD-METHOD. (reported by Jean
508 * fixed bug: the Power PC assembly code for calling into lisp
509 sometimes computed its return address wrongly (depending on the
510 15th bit of the address, fixed at link time). This used to
511 manifest itself in a segmentation violation while building PCL.
512 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
513 many others over the years)
514 * fixed bug: ROOM no longer reports silly numbers for stack usage if
515 the stack pointer (treated as a signed integer) is negative.
516 (thanks to Peter van Eynde)
518 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
519 * new platform: experimental support for the Windows operating
520 system has been added. (thanks to Alastair Bridgewater)
521 * fixed several bugs in and robustified the PPC FFI (including
522 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
523 * bug fix: allow non-simple string symbol names (reported by Paul
525 * bug fix: interrupt handling on NetBSD (thanks to Richard M
527 * bug fix: saving a core corrupted callbacks on x86/x86-64
528 * bug fix: closed a loophole in metacircularity detection and
529 grounding in the PCL implementation of CLOS.
530 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
531 (reported by tomppa on #lisp)
532 * bug fix: clear the direction flag on Lisp -> C transitions, as
533 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
534 (reported by Andrej Grozin and Hendrik Maryns)
535 * optimization: major improvements to GC efficiency on GENCGC platforms
536 * optimization: faster implementation of EQUAL
537 * optimization: emit more efficient opcodes for some common
538 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
539 * optimization: several other minor code-generation improvements on x86-64
540 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
542 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
543 * minor incompatible change: (SETF CLASS-NAME) and (SETF
544 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
545 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
546 by ANSI as a generic function, and for consistency (SETF
547 GENERIC-FUNCTION-NAME) is treated likewise.
548 * fixed bug #233.b: make constraint propagation notice when a variable
549 value is changed after it is referenced but before it is used
550 * fixed bug #296: no more arbitrary behaviour from filenames with
551 odd characters as --load arguments. (reported by Adam Warner)
552 * fixed bug #390: :CHARACTER-SET pathname components now work as
553 expected. (reported by Tim Daly Jr)
554 * fixed bug #391: complicated :TYPE intersections in slot
555 definitions no longer cause an error in PCL internals.
556 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
557 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
558 returning the number of octets which would be written to the
559 file-stream. (thanks to Robert J. Macomber)
560 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
561 arguments to the internal stream functions. (thanks to David
563 * bug fix: stack exhaustion is now handled on the x86/SunOS
564 platform. (thanks to Daisuke Homma)
565 * bug fix: more accurate ROOM results on GENCGC platforms
566 * optimization: improved type inference for arithmetic-for
567 index variables in LOOP
568 * optimization: faster floating-point SQRT on x86-64
569 * fixed some bugs revealed by Paul Dietz' test suite:
570 ** DOCUMENTATION returns NIL instead of "" for method combinations
571 that don't have a docstring
573 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
574 * minor incompatible change: (SETF CLASS-NAME) and (SETF
575 GENERIC-FUNCTION-NAME) are no longer generic functions, and
576 therefore are not customizeable by user code (as seems to be at
577 least permitted and maybe required by AMOP). As a consolation,
578 however, the SBCL implementation of these functions now calls
579 REINITIALIZE-INSTANCE as specified by AMOP.
580 * bug fix: slot-definition documentation is propagated as per ANSI
581 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
582 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
583 argument, as do eslotd initialization methods. (from Pascal
584 Costanza's "Closer" project)
585 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
586 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
588 * bug fix: it is now possible to have more than one subclass of
589 STANDARD-GENERIC-FUNCTION without causing stack overflow.
590 (reported by Bruno Haible, Pascal Costanza and others)
591 * bug fix: the dependent update protocol now works for generic
592 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
594 * bug fix: condition-class instances corresponding to
595 DEFINE-CONDITION forms are now created eagerly. (reported by
596 Kalle Olavi Niemitalo on comp.lang.lisp)
597 * bug fix: floating point printing is more accurate in some
598 circumstances. (thanks to Simon Alexander)
599 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
600 merged with *DEFAULT-PATHNAME-DEFAULTS*.
601 * bug fix: callbacks on OS X now preserve stack-alignment.
602 (thanks to Cyrus Harmon)
603 * enhancement: the x86-64 disassembler is much better at
604 disassembling SSE instructions. (thanks to Lutz Euler)
605 * enhancement: CHECK-TYPE on a variable now allows type-inference
606 (thanks to Vincent Arkesteijn)
607 * optimization: improved performance of EUC-JP external format.
608 (thanks to NIIMI Satoshi)
609 * optimization: performance improvements to IO on file streams of
610 :ELEMENT-TYPE CHARACTER
611 * optimization: much faster memory allocation on x86-64
612 * optimization: faster garbage collections (latency and throughput)
614 * optimization: faster bignum subtraction and division on x86 and x86-64
615 (thanks to Lutz Euler)
616 * optimization: more accurate type-inference for loops that use a
617 floating point index variable or a negative step.
619 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
620 * bug fix: add a workaround to SBCL looping infinitely at startup on
621 Linux kernels with apparently buggy implementations of personality().
622 (thanks to Svein Ove Aas)
623 * bug fix: Unicode symbols are correctly printed in LDB backtraces
624 (thanks to David Lichteblau)
625 * bug fix: local bindings shadow global symbol macros for
626 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
627 * optimization: non-open coded uses of numeric comparison operators
628 (e.g. >) no longer cons when called with more than one parameter
629 on platforms supporting dynamic-extent allocation.
630 * enhancement: saving cores with foreign code loaded is now supported
631 on MIPS/Linux in addition to the previously supported platforms.
632 * bug fix: FIND-RESTART now tests for activity, not applicability when given
633 a restart object as identifier. (reported by Helmut Eller for CMUCL)
634 * bug fix: division by zero in sb-sprof when no samples were collected
635 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
636 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
637 (thanks to Alexander Kjeldaas)
638 * new feature: ignoring the return values of destructive functions
639 like NREVERSE signals a compile-time style-warning.
640 (thanks to Kevin Reid)
641 * new feature: the alignment of alien structure fields can be
642 explicitly specified. (thanks to Cyrus Harmon)
643 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
644 and dump core on SIGQUIT
646 ** incompatible change: threads do not inherit values of specials
647 from their parents (see manual)
648 ** bug fix: threads stacks belonging to dead threads are freed by the
649 next exiting thread, no need to gc to collect thread stacks anymore
650 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
651 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
652 ** bug fix: dynamic variable and thread start related gc lossage
653 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
655 * fixed some bugs revealed by Paul Dietz' test suite:
656 ** SUBTYPEP is slightly more accurate on heinously complicated
657 CONS types where some of the members have uncertain (in the
658 NIL, NIL sense) type relationships to each other.
660 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
661 no longer purified unless :PURIFY T is explicitly specified.
662 ** Non-purified cores are significantly smaller than before
664 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
665 * new feature: timers based on Zach Beane's excellent timer package
666 * added support for the following external formats: koi8-u,
667 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
668 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
669 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
670 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
671 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
672 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
673 * incompatible change: a threaded SBCL will no longer revert to
674 non-threaded mode on non-NPTL systems, but refuse to start entirely.
675 * bug fix: interrupts are disabled until startup is complete; no
676 more sigsegvs when receiving a signal to soon
677 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
679 * bug fix: add a workaround for the memory randomization features in
680 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
681 workaround will only be in effect on systems with the proc filesystem
683 * bug fix: printing objects of type HASH-TABLE signals a
684 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
686 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
687 have been running for over 50 days. (reported by Gilbert Baumann)
688 * bug fix: the logic for getting names of functions gets less
689 confused when confronded with alternate-metaclass
690 funcallable-instances. (reported by Cyrus Harmon)
691 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
692 consistent, even on internal alternate-metaclass objects.
693 * bug fix: flush closure information collected by physical
694 environment analysis prepass before the main pass. (bug reported
696 * bug fix: compiler pack phase does not modify a hashtable, which is
697 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
698 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
699 may be expanded. (reported by Alexander <malishev> on c.l.l)
700 * bug fix: no more style-warnings when compiling code using LAST
701 under high-SPEED low-SPACE settings. (reported by David Wallin
703 * fixed some incompatibilities between SBCL's MOP and the MOP
705 ** the METAOBJECT class is now implemented;
706 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
707 STANDARD-OBJECT, as required;
708 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
709 now compatible (as required by VALIDATE-SUPERCLASS); there
710 remains a consistency requirement over the presence or absence
711 of the FUNCTION class in the superclass list of finalized
712 classes; see the manual for more details;
713 ** the :AROUND method for COMPUTE-SLOTS on
714 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
715 requested slot ordering.
717 ** bug fix: parent thread now can be gc'ed even with a live
719 ** bug fix: binding a special with PROGV to no value is not
720 the same as that symbol not having been bound (thanks to
722 ** bug fix: binding specials is thread safe (thanks to
724 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
725 and SB-SPROF do not die with 'no handler for signal XX in
726 interrupt_handle_now(..)' anymore
727 ** bug fix: WITH-TIMEOUT works with multiple running threads
728 * fixed some bugs revealed by Paul Dietz' test suite:
729 ** ENSURE-GENERIC-FUNCTION should take a method class object for
730 the :method-class keyword argument.
732 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
733 * new port: the Solaris operating system on x86 processors is now
734 mostly supported, though some rough edges in the environment
735 remain. (thanks to Daisuke Homma)
736 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
737 space for its heap. (thanks to Thiemo Seufer)
738 * optimization: SBCL on MIPS platforms now supports dynamic-extent
739 closures. (thanks to Thiemo Seufer)
740 * minor incompatible change: eof selects abort in the debugger.
741 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
742 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
744 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
745 deprecated, and will go away in a future revision of SBCL.
746 * minor incompatible change: GC-ON and GC-OFF are no longer
747 implemented with a counter, it does not matter how many times gc
748 is switched on or off
749 * bug fix: discriminating functions for generic function classes
750 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
751 make invalid assumptions about method precedence order. (reported
753 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
754 platforms. (thanks to Thiemo Seufer)
755 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
756 * bug fix: correct pathname printing with printer escaping is on.
757 (thanks to Kevin Reid)
758 * bug fix: complex VOP definitions in "user-space" no longer trigger
759 package locks. (reported by Zach Beane)
760 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
761 for funcallable-instance functions, and is no different from
763 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
764 characters in the current readtable. (reported by Nicholas Neuss)
765 * bug fix: SUBTYPEP on various CONS types returns more a more
766 accurate acknowledgment of its certainty.
767 * optimizations: REMOVE-DUPLICATES now runs in linear time on
768 lists in some cases. This partially fixes bug 384.
769 * flush all standard streams before prompting in the REPL and the
771 * bug fix: signal handling and triggering gc do not conflict
772 directly anymore, in particular a high frequency sb-sprof does
773 not prevent gc from running
774 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
775 approximation for timezone and DST information between the
776 universal time epoch and the smallest negative 32-bit time_t.
777 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
778 year 1899 so long as the encoded time is non-negative.
779 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
780 the correct answer for non-constant rotate amounts when performing
781 an inline 32-bit rotation.
783 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
784 there is only one thread in the session
785 ** bug fix: memory leak for streams created in one thread and
786 written to in another
787 ** bug fix: lockup when compiled with gcc4
788 ** bug fix: race that allows the gc to be triggered when gc is
790 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
791 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
793 ** bug fix: finished threads are gc'ed properly
794 * fixed some bugs revealed by Paul Dietz' test suite:
795 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
796 has arguments with a different set of applicable methods from
797 the orignal arguments.
798 ** The type error thrown by MAP now has a correct expected-type
800 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
801 name a compiled function.
802 ** Three MISC tests where a large bignum was improperly coerced to
803 a float that couldn't represent that bignum during type
804 derivation were fixed.
805 ** SUBTYPEP can now handle types involving the negation of a
806 list-form FUNCTION type.
807 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
808 as (COMPLEX (AND RATIO (NOT FIXNUM))).
809 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
811 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
812 * New feature: Experimental support for bivalent streams: streams
813 opened with :element-type :default now allow character and binary
814 (unsigned-byte 8) I/O
815 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
816 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
818 * bug fix: no more highly sporadic "couldn't check whether ~S is
819 readable" when reading a stream and an interrupt hits in the middle
820 of a select system call
821 * compiler better recognizes complex arrays (reported by Eduardo
823 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
824 for variables on SBCL built with linkage-tables. (reported by Luis
826 * various error reporting improvements.
827 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
828 (Thanks to Thiemo Seufer)
829 * bug fix: nested reader invokations work correctly
830 * bug fix: it is possible to have simultaneous references to foreign
831 code and foreign data with the same name.
833 ** added x86-64 support
834 ** incompatible change: the threading api now works with thread
835 objects instead of thread ids
836 ** bug fix: threads are protected from signals and interruption when
837 starting up or going down
838 ** bug fix: a race where an exiting thread could lose its stack to gc
839 ** bug fix: don't halt on infinite error in threads if possible
840 ** fixed numerous gc deadlocks introduced in the pthread merge
841 ** bug fix: fixed thread safety issues in read and print
842 ** bug fix: debugger doesn't hang on session lock if interrupted at
843 an inappropriate moment
844 ** bug fix: run-program is now thread safe(r)
845 ** bug fix: inner with-recursive-lock no longer releases the mutex
846 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
847 * fixed some bugs revealed by Paul Dietz' test suite:
848 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
849 EXPECTED-TYPE slots filled.
850 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
852 ** MAKE-CONDITION accepts classes as type-designators.
853 ** COMPILE may never return NIL.
854 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
855 range before calling Unix time functions
857 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
858 * numerous signal handling fixes to increase stability
859 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
860 * minor incompatible change: we now correctly canonize default
861 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
862 as per the MOP, rather than the historical (INITARG INITFUNCTION
863 INITFORM). (reported by Bruno Haible)
864 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
865 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
866 for more information.
867 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
868 pathname is a directory pathname.
869 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
870 * dynamic space size on PPC has been increased to 768Mb. (thanks to
872 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
873 :METACLASS argument in addition to a class name. (reported by
874 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
875 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
876 (reported by Bruno Haible; patch from Gerd Moellmann)
877 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
879 * bug fix: more cleanups to the floating point exception handling on
880 x86-64 (thanks to James Knight)
881 * bug fix: the compiler does not try to constant fold calls of
882 COERCE and BIT-* functions when they return freshly constructed
883 objects. (reported by Nikodemus Siivola and Paul Dietz)
884 * optimization: improved the MIPS versions of generic (in the
885 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
886 * optimization: direct conversion of (unsigned-byte 32) to floats on
887 the PowerPC platform.
888 * optimization: structure instances with raw slots now use less
889 memory, and probably show better memory locality. (thanks to
891 * optimization: DYNAMIC-EXTENT declarations for lists and closures
892 are treated as requests for stack allocation on the x86-64,
893 Alpha-32, PPC and SPARC platforms.
894 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
895 the wrong file descriptor; implementation of SOCKET-OPEN-P.
896 (thanks to Tony Martinez)
898 ** gcing a dead thread can no longer lead to lockups
899 ** threads block signals until they are set up properly
900 ** errno is no longer shared by threads
901 ** interrupt-thread restores the eflags register on x86
902 ** fixed some lockups due to gc/thread interaction
903 * fixed some bugs revealed by Paul Dietz' test suite:
904 ** invalid dotted lists no longer raise a read error when
906 ** signal an error if a symbol that names a declaration is used
907 as the name of a type, or vice versa
908 ** allow using the (declare (typespec var*)) abbreviation for
909 (declare (type typespec var*)) with all type specifiers
910 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
911 ** always return NIL from PPRINT-POP when OBJECT is NIL
912 ** don't signal errors when pretty-printing malformed LABELS,
913 FLET or MACROLET forms
914 ** declarations in a DOLIST body are also in scope for the
916 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
918 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
921 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
922 * fixed cross-compiler leakages that prevented building a 32-bit
923 target with a 64-bit host compiler.
924 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
925 opened with :IF-EXISTS :OVERWRITE.
926 * fixed bug 281: error for an invalid qualifier in a short-form method
927 combination method is not signalled until the faulty method is called.
928 * bug fix: iteration variable type inferrer failed to deal with open
929 intervals. (reported by Alan Shields)
930 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
931 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
932 or more runtime options were provided to the sbcl binary.
933 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
934 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
935 * optimization: there's now a fast-path for fixnum arguments in the
936 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
937 * optimization: the code generated on x86-64 is more compact thanks
938 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
939 * bug fix: floating-point exception handling now partly works on
940 x86-64. (Thanks to James Knight)
941 * improvement to the MIPS backend from Thiemo Seufer: C-style
942 64-bit long long arguments and return values to alien functions
944 * fixed some bugs revealed by Paul Dietz' test suite:
945 ** the type-error signalled from WARN has a filled-in DATUM slot.
946 ** the type-error required when a stream is not associated with
947 a file has the stream as its datum.
948 ** type-errors on single-floats on x86-64 no longer have
949 :INVALID-OBJECT as the datum
950 ** the type-errors signalled for invalid function names now have
951 a correct expected type
952 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
953 for structures defined with a :TYPE. Documentation strings for
954 typed structures are no longer immediately discarded
955 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
956 broadcast streams and synonym streams. FILE-LENGTH now also works
957 on broadcast streams.
959 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
960 * incompatible change: the --noprogrammer option, deprecated since
961 version 0.7.5, has been removed. Please use the equivalent
962 --disable-debugger option instead.
963 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
965 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
966 inoperational for a while now) has been completely removed.
967 * null lexical environments are now printed as #<NULL-LEXENV>,
968 significantly reducing the amount of clutter in typical backtraces.
969 * documentation on weak pointers, finalization, and after GC hooks
970 has been added to the manual.
971 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
972 as other specialized array types, is much faster. SUBSEQ and
973 COPY-SEQ on such arrays have also been sped up.
974 * optimization: EQL is now more efficient when at least other argument
975 is known to be of type (OR FIXNUM (NOT NUMBER)).
976 * fixed bug: the runtime is now less vulnerable to changes in the
977 size of the SBCL object on OS X, and virtual memory is reserved for
978 all spaces that need to be at a fixed address.
979 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
980 * fixed bug: finalizers and after GC hooks that cause consing are now
982 * fixed bug: compiler error messages and summaries are now printed to
983 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
984 * fixed inference of the upper bound of an iteration variable.
985 (reported by Rajat Datta).
986 * fixed bug 211e: calling local functions with duplicated constant
987 keyword argument no longer causes a bogus style warning about an
989 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
990 ftype declaration to be disregarded. (reported by Dave Roberts)
991 * fixed bug 373: caused by erronous compilation of references to alien
992 variables in the runtime on ppc/darwin.
993 * fixed bug 376: CONJUGATE type deriver.
994 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
995 (reported by Baughn on #lisp)
996 * a cross-compiler bug on non-x86 platforms has been identified and
997 fixed. (thanks to Bruno Haible)
998 * improvements to the MIPS runtime code for increased stability.
999 (thanks to Thiemo Seufer)
1000 * increased the maximimum compact environment size to allow
1001 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1002 * partial workaround for bug 135: don't name the function we're
1003 calling for hairy cases of EVAL, so as not to accumulate one environment
1004 entry per call to EVAL. (reported by Kevin Reid)
1005 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1006 * optimization: type testing for non-vector arrays should be faster.
1007 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1009 * bug fix: setting 31st element of a bit vector to zero did not work
1011 * bug fix: redefining a class definition which failed due to a
1012 previous accessor / function clash now works (but see BUGS entry
1013 #380 for more problems in this area). (thanks to Zach Beane)
1014 * the long form of DEFINE-METHOD-COMBINATION disables method group
1015 checking when given a single method group with pattern *. (thanks
1017 * on x86 compiler supports stack allocation of results of simple
1018 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1019 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1020 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1021 * fixed some bugs related to Unicode integration:
1022 ** the restarts for recovering from input and output encoding
1023 errors only appear when there is in fact such an error to
1025 * fixed some bugs revealed by Paul Dietz' test suite:
1026 ** MISC.549 and similar: late transformation of unsafe type
1027 assertions into derived types caused unexpected code
1029 ** SCALE-FLOAT type deriver is less wrong.
1030 ** type derivers for EXP, LOG and similar functions compute result
1031 types for complex arguments better.
1032 ** (MISC.563) CONJUGATE type deriver works for very restricted
1034 ** out-of-line type testers for character strings are available.
1035 ** EQUAL compiler transform understands specialness of objects
1037 ** accessing double-floats stored on the stack now works on x86-64.
1038 ** debugger internals could sometimes create invalid lispobjs,
1039 resulting in GC crashes.
1040 ** MISC.548: type check weakening can convert required type into
1042 ** initialization forms for bindings are not in scope of free special
1045 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1046 * incompatible change: thread support for non-NPTL systems has
1047 been removed - locking is buggy and unreliable. A threaded
1048 SBCL build will now warn at startup and refuse to create
1049 new threads, unless futex support is detected in the kernel
1050 * incompatible change: the top level REPL now has only an ABORT
1051 restart associated with it, not TOPLEVEL and ABORT as it used to.
1052 TOP and TOPLEVEL are now available as debugger commands for
1053 returning to the top level.
1054 * incompatible change: forms evaluated in the REPL now use the
1055 global optimization policy.
1056 * incompatible change: user- and system-initialization files are
1057 no longer processed with LOAD, but by READ and EVAL; hence the
1058 global optimization policy, startup package, readtable, etc,
1060 * The .fasl file format number has been incremented because of
1061 various incompatible changes.
1062 * internal entry point details and argument counts no longer appear
1063 in backtraces unless explicitly requested by setting
1064 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1065 * built-in and standard functions no longer have names like "top
1066 level local call to FOO".
1067 * fixed bug 32: functions defined in non-null lexical environments
1068 now have more legible printed representation
1069 * fixed bug 33: functions defined in non-null lexical environemnts
1070 are now more amenable to inspection by INSPECT.
1071 * workaround for bug 354: XEPs no longer appear in backtraces unless
1072 explicitly requested.
1073 * fixed bug: receiving the signal which results from attempting to
1074 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1075 SIGBUS on other *BSDs) on architectures where the C stack is also
1076 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1077 to debugger confusion or wild instability. (reported by Cheuksan
1079 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1080 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1081 (reported by Lutz Euler)
1082 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1083 compiled code. (reported by Paul Dietz)
1084 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1085 specialized parameter to a method to something that is not TYPEP
1086 the specializer is now possible.
1087 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1088 face of package deletion.
1089 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1090 pathname. (reported by David Tolpin on c.l.l)
1091 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1092 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1093 STRING-STREAM and FILE-STREAM, respectively.
1094 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1095 than previously; in addition, its test suite is now run on build.
1096 (thanks to Luke Gorrie)
1097 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1098 * optimization: added a immediate representation for single-floats
1100 * fixed some bugs revealed by Paul Dietz' test suite:
1101 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1102 ** attempting to create a package with a colliding nickname causes
1103 correctable errors to be signalled.
1104 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1105 ** several x86-64 backend bugs related to sign-extension of immediate
1108 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1109 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1110 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1112 * fixed loading of multiply forward-referenced layouts.
1113 (thanks to Cheuksan Wang)
1114 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1115 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1116 (see COMPILE-FILE documentation for details of :PRINT option)
1117 * fixed bugs 19 and 317: fixed-format floating point printing is
1118 more accurate. This also fixes a bug reported by Adam Warner
1119 related to the ~@F format directive.
1120 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1122 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1123 dispatch table if the from-char is a dispatch macro character.
1124 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1125 by the wordsize no longer ignore the last word. (reported by Lutz
1127 * fixed bug in type checking of dynamic-extent variables. (reported
1129 * optimization: sequence traversal functions use their freedom to
1130 coerce function designators to functions.
1131 * optimization: code with many calls to CLOS methods specialized on
1132 CLOS classes has had redundant type checks removed.
1133 * optimization: added declarations to speed up operations that access
1134 the internal character database (for example STRING-UPCASE)
1135 * optimization: comparison operations between floats and sufficiently small
1136 fixnums no longer create extra rationals
1137 * fixed some bugs related to Unicode integration:
1138 ** portions of multibyte characters at the end of buffers for
1139 character-based file input are correctly transferred to the
1140 start of the buffer at the next read.
1141 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1142 passing it through to OPEN.
1143 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1144 argument given to internal calls to OPEN.
1145 ** the built-in comment readers (introduced by character sequences
1146 ";" and "#|") are more forgiving to encoding errors; they will
1147 STYLE-WARN and then attempt to resync the stream at a character
1148 boundary. (thanks to Teemu Kalvas)
1149 * fixed some bugs in the x86-64 port:
1150 ** Negative short int return values from c-calls are sign-extended
1152 ** The stack is aligned to 16-bytes for c-calls, as required by
1153 the ABI. (thanks to Cheuksan Wang)
1154 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1155 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1156 for enums. (thanks to Vincent Arkesteijn)
1157 ** Multiple small optimizations and bugfixes for floating point
1159 * fixed some bugs revealed by Paul Dietz' test suite:
1160 ** Space, Tab, Linefeed, Return and Page have the invalid
1161 secondary constituent character trait.
1162 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1164 ** WITH-INPUT-FROM-STRING should only update the index place on
1166 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1167 works more reliably.
1168 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1169 with one-dimensional arrays with fill pointers.
1170 ** TYPE-OF failed on a complex with an integer realpart and a
1172 ** compiler failure during type inference for the code of form
1173 (IF (EQL X (THE ...)) ...) (MISC.535).
1175 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1176 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1177 platform. The port supports 61-bit fixnums, large memory spaces
1178 and reloading shared object files.
1179 * enhancement: saving cores with foreign code loaded is now
1180 supported on ppc/Darwin in addition to the previously supported
1182 * enhancement: the statistical profiler now walks deeper into the
1183 call stack for more meaningful call-graphs and accrued time
1184 reports (x86/x86-64 only). It also now reports time spent in
1186 * enhancement: it is now possible to trace most individual methods
1187 of a generic function in addition to tracing the generic function
1189 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1191 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1192 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1193 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1194 produces an error. (thanks to Vincent Arkesteijn)
1195 * bug fix: NAMESTRING on pathnames with :WILD components in their
1196 directories works correctly. (thanks to Artem V. Andreev)
1197 * fixed bug 125: compiler preserves identity of closures. (reported
1199 * bug fixed: functions with &REST arguments sometimes failed with
1200 "Undefined function" when compiled with (DEBUG 3). (reported by
1202 * bug fix: overflow during compiling of setting element of a bit
1203 vector with constant index and value. (reported by Timmy Douglas)
1204 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1205 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1206 * on x86 compiler partially supports stack allocation of dynamic-extent
1208 * GO and RETURN-FROM do not check the extent of their exit points
1209 when compiled with SAFETY 0.
1210 * fixed some bugs related to Unicode integration:
1211 ** encoding and decoding errors are now much more robustly
1212 handled; it should now be possible to recover even from invalid
1213 input or output to the terminal. (thanks to Teemu Kalvas)
1214 ** provided a first cut at implementing STRING-TO-OCTETS and
1215 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1216 ** altered the SB-MD5 contributed module slightly, changing the
1217 interface just enough for it to be supportable for builds where
1218 lisp characters are not eight bits.
1219 * fixed some bugs revealed by Paul Dietz' test suite:
1220 ** the FORMATTER-generated functions for ~V[ conditionals require
1221 the correct number of arguments.
1222 ** READ-FROM-STRING returns the mandated second value when applied
1223 to displaced strings.
1224 ** the #\Rubout and #\Backspace characters are treated as invalid
1225 constituent characters by the tokenizer.
1227 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1228 * new feature: reloading changed shared object files with
1229 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1230 * new feature: references to foreign variables and functions
1231 can now be compiled and loaded before the corresponding shared
1232 object file is loaded, as long as the foreign definitions are
1233 available at runtime.
1234 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1235 supported. (thanks to Dan Debertin)
1236 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1237 just keywords. (thanks to Vincent Arkesteijn)
1238 * fixed bug #331: structure-class instances corresponding to
1239 DEFSTRUCT forms are now created eagerly.
1240 * fixed bug #345: backtraces from calls to undefined functions work
1241 on x86 as well. Related bug #61 is now also partially fixed on x86
1242 (backtraces from throws to unknown catch tags.)
1243 * bug fix: lambda-list parsing is now stricter vrt. order and number
1244 of lambda-list keywords.
1245 * bug fix: as specified by AMOP, an error is signalled if a
1246 class-option appears multiple times in a DEFCLASS form. (reported
1248 * bug fix: RANDOM can be compiled when the compiler derives the type
1249 of its numeric argument as a disjoint set of small integers.
1250 (reported by Paul Dietz)
1251 * bug fix: starting a core saved with shared objects loaded when
1252 those objects are not available no longer causes threaded SBCL to
1253 hang. (reported by Sean Ross)
1254 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1256 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1257 argument, which must always be NIL. (reported by Kalle Niemitalo)
1258 * bug fix: printing 1.0d+23 no longer results in an error.
1259 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1260 * bug fix: structure slot setters preserve evaluation order. (thanks
1262 * fixed some bugs related to Unicode integration:
1263 ** RUN-PROGRAM can allow its child to take input from a Lisp
1264 stream. (reported by Stefan Scholl)
1265 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1266 locales. (reported by Ken Causey)
1267 * fixed some bugs revealed by Paul Dietz' test suite:
1268 ** INCF, DECF and REMF evaluate their place form as specified in
1270 ** FORMATTER expands ~{ ~} iteration directives with V or #
1271 parameters correctly.
1272 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1273 consequent uses no arguments correctly.
1274 ** the system has a partial understanding of the (COMPLEX RATIO)
1276 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1279 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1280 * new feature: a build-time option (controlled by the :SB-UNICODE
1281 keyword feature, enabled by default) for building the system with
1282 support for the entire 21-bit character space defined by the
1284 * new feature: the system now has rudimentary external-format
1285 support; the primary user-visible change at this time is that
1286 characters with the high bit set (such as lower-case-e-acute) will
1287 print correctly to a terminal in a UTF-8 environment.
1288 * minor incompatible change: BASE-CHAR no longer names a class;
1289 however, CHARACTER continues to do so, as required by ANSI.
1290 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1291 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1292 has been moved to the SB-EXT package (temporarily re-exported from
1294 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1295 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1297 * fixed bug #351: better error-handlind and reporting for malformed
1299 * fixed bug #350: bignum-printing is now more memory-efficient,
1300 allowing printing of very large bignums, eg. (expt 2 10000000).
1301 (reported by Bruno Haible)
1302 * fixed bug #302: better primitive-type selection for intersection
1304 * fixed bug #308: non-graphic characters now all have names, as
1305 required. (reported by Bruno Haible)
1306 * bug fix: redefining a class with different superclasses now correctly
1307 removes it from the direct-subclasses of its previous superclasses.
1308 (reported by David Morse)
1309 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1310 new value now works. (reported by Bruno Haible)
1311 * bug fix: correct canonicalization of multiple non-standard slot
1312 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1313 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1314 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1315 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1316 now exists, an signals an error.
1317 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1318 during macroexpansion for non-iteration variables as well. (reported
1319 by Bruno Haible for CMUCL)
1320 * bug fix: Cyclic structures and unprintable objects in compiler
1321 messages no longer cause errors. (reported by Bruno Haible)
1322 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1323 and READ-FROM-STRING all now return a primary value of NIL if
1324 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1325 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1326 (reported by Bruno Haible for CMUCL)
1327 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1328 do not designate a condition. (reported by Bruno Haible for
1330 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1331 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1332 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1333 permitting resolution in favour of any of the conflicting symbols.
1334 (reported by Bruno Haible for CMUCL)
1335 * bug fix: EQUAL compiler optimizations is less aggressive on
1336 strings which can potentially compare true despite having distinct
1337 specialized array element types.
1338 * bug fix: unit enumerations can be defined without dividing by
1339 zero. (thanks to Vincent Arkesteijn)
1340 * FORMAT compile-time argument count checking has been enhanced.
1341 (report from Bruno Haible for CMUCL)
1342 * a partial workaround for the bug 262: the compiler does not try to
1343 inline-expand a local function doing RETURN-FROM from a deleted
1344 BLOCK. (thanks to Peter Denno for the bug report and to David
1345 Wragg for the simple test case)
1346 * fixed some bugs revealed by Paul Dietz' test suite:
1347 ** RENAME-PACKAGE allows all package designators as new package
1349 ** constraint propagation and lambda variable substitution are
1350 more cautious in dealing with partially deleted code.
1351 ** compiler sometimes lost reoptimization passes.
1352 ** CERROR, given a condition as condition designator, passes its
1353 remaining arguments to the continue format control without
1355 ** Case-altering FORMAT directives work correctly on non-ASCII
1357 ** The REAL type specifier handles bounds outside the floating
1358 point ranges without signalling FLOATING-POINT-OVERFLOW.
1359 ** Functions with IR1-transformations can create intercomponent
1360 references to global functions.
1361 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1363 ** FORMAT ~R treats a nil value for its first parameter correctly.
1365 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1366 * enhancement: saving cores with foreign code loaded is now
1367 supported on x86/NetBSD and sparc/Linux in addition to the previously
1368 supported platforms.
1369 * bug fix: on some platforms repeated installations caused multiple
1370 copies of HTML documentation to be installed -- should not happen
1371 any more. (reported by Stefan Scholl)
1372 * bug fix: parsing self-recursive alien record types multiple times
1373 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1374 original patch by Helmut Eller for CMUCL)
1375 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1376 (thanks to Richard Kreuter)
1377 * bug fix: defining classes whose accessors are methods on existing
1378 generic functions in other (locked) packages no longer signals
1379 bogus package lock violations. (reported by François-René Rideau)
1380 * bug fix: special variables as DEFMETHOD parameters no longer have
1381 associated bogus type declarations. (reported by David Wragg and
1383 * bug fix: read-write consistency on streams of element-type
1384 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1385 * bug fix: redefiniton of the only method of a generic function with
1386 no DEFGENERIC no longer emits a full WARNING. In addition,
1387 redefinition of generic functions with no DEFGENERIC to an
1388 incompatible lambda list now signals an error. (thanks to Zach
1390 * bug fix: DEFGENERIC now works even when there's a function of the
1391 same name in an enclosing lexical environment. (thanks to Zach
1393 * fixed compiler failure, caused by instrumenting code during
1394 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1395 * optimization: added loop analysis and improved register allocation
1396 * fixed some bugs revealed by Paul Dietz' test suite:
1397 ** POSITION on displaced vectors with non-zero displacement
1398 returns the right answer.
1399 ** (SIMPLE-STRING) is a valid type specifier for sequence
1401 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1403 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1404 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1406 ** The justification version of the FORMAT ~< directive treats
1407 non-zero minpad parameter correctly.
1409 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1410 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1411 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1412 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1413 the supported interface.
1414 * new feature: Single-stepping of code compiled with DEBUG 2 or
1415 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1416 * new feature: saving cores with foreign code loaded is now
1417 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1418 Timothy Moore's work for CMUCL)
1419 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1420 parameters to * instead of NIL if no initform is supplied.
1421 (reported by Johan Bockgaard)
1422 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1423 correctly when FUNCALL appears as the car of the form. Note:
1424 despite this FUNCALL forms are not currently subject to
1425 compiler-macro expansion. (port of Raymond Toy's fix for the
1426 same from CMUCL, reported by Johan Bockgaard)
1427 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1428 (thanks for Teemu Kalvas)
1429 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1430 case instead of terminating the iteration (thanks for Julian
1431 Squires, Sean Champ and Raymond Toy)
1432 * bug fix: incorrect expansion of defgeneric that caused a style
1433 warning. (thanks for Zach Beane)
1434 * bug fix: slot accessor effective method computation works properly
1435 for classes with multiple non-standard applicable methods on
1436 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1437 * on x86 compiler supports stack allocation of results of LIST and
1438 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1439 CMUCL implementation by Gerd Moellmann)
1440 * fixed some bugs revealed by Paul Dietz' test suite:
1441 ** FORMAT strings with both the ~<~:;~> form of the justification
1442 directive and pretty-printing directives cause an error.
1444 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1445 * incompatible change: the internal functions
1446 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1447 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1448 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1449 instead of the old functions.
1450 * new feature: on platforms where "dladdr" is available foreign
1451 function names now appear in backtraces. (based on Helmut Eller's
1453 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1454 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1456 * documentation: ASDF manual is now distributed with SBCL.
1457 * bug fix: SBCL can now load its contributed modules with REQUIRE
1458 even if the system-provided entries have been removed from
1459 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1461 * bug fix: backtraces involving undefined functions or assembly
1462 routines are more informative. (thanks to Brian Downing)
1463 * bug fix: mutually referent alien structures now work correctly.
1464 (reported by Rick Taube)
1465 * bug fix: structures defined by WITH-ALIEN can be referred to
1466 within other definitions in the same WITH-ALIEN.
1467 * bug fix: division operators (MOD, TRUNCATE and the like) with
1468 constant zero divisors and integer dividends no longer generate
1470 * bug fix: provide default methods for INPUT-STREAM-P and
1471 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1472 * bug fix: improve the detection and resolution of MOP metacycles
1473 (where effective method computation depends on the generic function
1474 having its effective method computed). (reported by Bruno Haible)
1475 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1476 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1477 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1478 * bug fix: pathnames with relative directory components can be
1479 represented relative to default pathnames.
1480 * optimization: in taking the GCD of bignums, reduce the two bignums
1481 to approximately the same size (using Euclid's algorithm) before
1482 applying the more sophisticated binary GCD. (thanks to Juho
1484 * optimization: COUNT on bitvectors now operates word-at-a-time.
1485 * optimization: ASH with a positive, but not necessarily constant,
1486 (leftwards) shift, when in a modular context, is compiled to a
1488 * fixed some bugs revealed by Paul Dietz' test suite:
1489 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1490 if the corresponding argument is NIL.
1491 ** FORMAT directives accepting a minpad parameter treat negative
1493 ** literal commas as character parameters to FORMAT directives are
1495 ** literal spaces directly after ~<Newline> directives within a
1496 format-logical-block (~:< ~@:>) do not induce :FILL-style
1497 conditional newlines.
1498 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1499 as specified: it no longer includes conditional newlines).
1500 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1502 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1503 :PER-LINE-PREFIX argument does not evaluate to a string.
1505 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1506 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1507 the manual for details; for now, package locks can be disabled by
1508 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1509 if no major problems are found then it is likely that they will be
1510 compiled in unconditionally.
1511 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1512 unsupported operators on all platforms. To load a shared library
1513 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1514 object file, link it into a shared library outside of SBCL and
1515 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1517 * bug workaround: ROOM T and the GC were not working together
1518 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1519 reporting facility aren't preserved. That reporting has been
1520 disabled, so now until and unless someone figures out how to make it
1521 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1522 * minor incompatible change: as threatened around sbcl-0.8.0, the
1523 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1524 The symbols are also exported from SB-PCL for backwards
1525 compatibility, but more so than before SB-PCL should be treated as
1526 an implementation-internal package.
1527 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1529 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1530 It is known as of this release not to work on the Alpha, however.
1531 * fixed bug #167: errors signalled due to illegal syntax in method
1532 bodies are now more legible.
1533 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1534 designators and can hence be used with TYPEP.
1535 * fixed bug #333: CHECK-TYPE now ensures that the type error
1536 signalled, if any, has the right object to be accessed by
1537 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1538 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1539 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1541 * fixed bug #334: programmatic addition of slots using specialized
1542 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1543 and :ALLOCATION :CLASS slots.
1544 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1545 float exponents. (rereported by Peter Seibel)
1546 * fixed a bug: #\Space (and other whitespace characters) are no
1547 longer considered to be macro characters in standard syntax by
1548 GET-MACRO-CHARACTER.
1549 * fixed bug: initialization of condition class metaobjects no longer
1550 causes an instance of the condition to be created. (reported by
1552 * fixed bug: it is now possible to have slots such that
1553 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1554 description is neither :INSTANCE nor :CLASS.
1555 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1556 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1557 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1558 non-standard SLOT-DEFINITION-ALLOCATION values.
1559 * fixed bugs: various race conditions handling exiting threads.
1560 CL-PPCRE's thread torture test now passes.
1561 * fixed arguably-a-bug: GC time proportional to number of threads in
1562 system even when most of them are idle
1563 * optimization: improved performance of BIT and SBIT on bit-vectors.
1564 * .fasl file incompatibility: The fasl file version number has
1565 been incremented because of changes associated with package locks.
1567 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1568 * minor incompatible change: the system no longer provides
1569 optimization hints (conditions which are TYPEP
1570 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1571 mode; these hints are still emitted when higher SPEED optimization
1573 * new contrib module: a sampling profiler (profiling by statistical
1574 sampling, rather than by instrumenting functions) is available as
1575 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1576 * the behaviour of the standard function ED is now customizeable by
1577 third parties through a hook variable: see ED's documentation
1578 string for information on the protocol.
1579 * the compiler no longer emits efficiency notes for (FUNCALL X)
1580 when the type of X is uncertain under default optimization
1582 * fixed bug 276: mutating a binding of a specialized parameter to a
1583 method to something that is not TYPEP the specializer is now
1585 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1586 exhibit the required behaviour on the x86 platform. (thanks to
1587 Peter van Eynde, Eric Marsden and Bruno Haible)
1588 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1589 even for difficult arguments. (reported by Peter Graves)
1590 * fixed bug 141a: the backquote printer now descends quoted
1592 * fixed another bug in backquote printing: no more destructive
1593 modification of the form's list structure. (reported by Brian
1595 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1596 move between its address being taken and the call to
1597 interrupt_thread, fixing a crashing race condition.
1598 * the SB-POSIX contrib implementation has been adjusted so that it
1599 no longer exhibits ridiculously poor performance when constructing
1600 instances corresponding to C structs.
1602 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1603 * minor incompatible change: the sb-grovel contrib now treats C
1604 structures as alien (in the sense of SB-ALIEN) objects rather than
1605 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1606 has implications for memory management of client code
1607 (sb-grovel-returned objects must now be manually managed) and for
1608 type safety (alien objects now have full types).
1609 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1610 used to control emission of compiler diagnostics, rather than the
1611 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1612 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1613 quality should be considered deprecated.
1614 * install.sh now installs the user manual as well
1615 * (not quite a new documentable feature, but worth considering in
1616 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1617 beginnings of a semantically meaningful condition hierarchy is
1618 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1620 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1621 designator as the defaults argument.
1622 * fixed bug: Displaced arrays whose displaced-to array has become
1623 too small now cause ARRAY-DIMENSION to signal an error, providing
1624 for safer bounds-checking. (reported by Bruno Haible)
1625 * fixed bug: DEFCLASS slot definitions with identical :READER and
1626 :WRITER names now signal a reasonable error. (reported by Thomas
1628 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1630 * fixed bug: Invalid slot specification errors now print correctly.
1631 (thanks to Zach Beane)
1632 * fixed bug 320: Shared to local slot value transfers in class
1633 redefinitions now happen corrently from superclasses as
1634 well. (reported by Bruno Haible)
1635 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1637 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1638 improper lists correctly. (reported by Bruno Haible)
1639 * fixed bug 313: source-transform for <fun-name> was erroneously
1640 applied to a call of a value of a variable with name <fun-name>.
1641 (reported by Antonio Menezes Leitao)
1642 * fixed bug 307: The obsolete instance protocol ensures that
1643 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1644 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1645 remove dead unknown-values globs from the middle of the stack.
1646 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1647 easier to resume long computations after using *BREAK-ON-SIGNALS*
1648 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1649 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1650 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1651 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1652 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1653 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1655 * fixed a (fairly theoretical) bug in string printing: if
1656 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1657 does not have array-element-type equal to the most general string
1659 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1660 function name. (thanks to Nikodemus Siivola)
1661 * fixed bug: compile-time format string checker failed on
1662 non-closed ~{. (reported by Thomas F Burdick)
1663 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1664 don't warn on legal loop code involving more than one aggregate
1665 boolean. (thanks to Nikodemus Siivola)
1666 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1667 in keyword position to MAKE-PACKAGE was not being reported as
1669 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1670 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1672 * fixed bugs 280 and 312: the checking for multiple definitions in a
1673 file is less likely to become confused by uses of inline
1675 * fixed bug: the #S reader macro performs the keyword coercion
1676 specified for slot names. (reported by Kalle Niemitalo)
1677 * fixed bug: lambda lists may contain symbols whose names start with
1678 & but are not lambda-list-keywords; their occurrence triggers a
1680 * fixed bug 321: define-method-combination argument lambda lists do
1681 not cause invalid code to be generated when &optional or &aux
1682 variables have default values. (reported by Bruno Haible)
1683 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1684 have CLOS classes; this appears also to have fixed reported
1685 instability in stack exhaustion detection.
1686 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1687 MUFFLE-WARNING when no associated restart is present is now
1689 * optimization: rearranged the expansion of various defining macros
1690 so that each expands into only one top-level form in a
1691 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1693 * optimization: used a previously little-used slot in symbols to
1694 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1696 * fixed some bugs revealed by Paul Dietz' test suite:
1697 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1699 ** Fixed an optimization bug related to inheritance of initforms
1700 from local to shared slots.
1701 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1702 ** CAST optimizer forgot to flush argument derived type.
1703 ** print/read consistency on floats is now orders of magnitude
1704 more likely. (thanks also to Bruno Haible for a similar report
1706 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1707 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1708 for objects of type REAL. Make it so.
1709 ** SXHASH is specified (infelicitously) to respect similarity,
1710 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1711 it so. (thanks to Markus Ziegler)
1712 ** on the Alpha, the compiler succeeds in compiling functions
1713 returning a known number of arguments greater than 63.
1714 ** fixed handling of invalid NIL arguments in keyword position
1716 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1718 ** provided a readably-printable representation for RANDOM-STATE
1720 ** ensured that pathnames, where they have a namestring, always
1721 print using #P"..." syntax.
1723 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1724 * Support for the forthcoming 2.0 version of the NetBSD kernel
1725 running on x86 hardware has been added. (thanks to Perry
1726 E. Metzger most immediately, and others for their past work)
1727 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1728 current release version; SBCL's OpenBSD support had been broken
1729 since about the time of OpenBSD's switch to ELF binary format.)
1730 * [placeholder for DX summary]
1731 ** user code with &REST lists declared dynamic-extent, under high
1732 speed or space and low safety and debug optimization policy.
1733 * The manual has been converted to Texinfo format and the debugger
1734 chapter from the cmucl manual has been added.
1735 * A facility has been added to extract documentation strings from
1736 sbcl and store them as Texinfo-formatted snippets for inclusion in
1737 the manual (via Texinfo's @include directive)
1738 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1739 the test case to Dave Roberts)
1740 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1741 pointers. (reported by Sean Ross)
1742 * bug fix: PROFILE output is printed nicely even for large numerical
1743 values. (thanks to Zach Beane)
1744 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1745 greater than 32 handle EOF correctly.
1746 * bug fix: on X86 an immediate argument of the IMUL instruction is
1747 correctly printed in disassembly. (thanks to Lutz Euler)
1748 * bug fix: class slots in redefined classes preserve their old
1749 values. (thanks to Bruno Haible and Nikodemus Siivola)
1750 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1751 succeeds. (reported by Marco Baringer)
1752 * fixed some bugs revealed by Paul Dietz' test suite:
1753 ** READ-SEQUENCE now works on ECHO-STREAMs.
1754 ** RATIONALIZE works more according to its specification. (thanks
1757 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1758 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1759 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1760 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1761 should matter to you only if you rebind the printer control
1762 variables and then find you want different bindings in the
1763 debugger than in the ordinary execution of your program.)
1764 * The runtime build system has been tweaked to support building
1765 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1766 assembler and linker. (thanks to Nikodemus Siivola)
1767 * Unbound, undefined, undeclared variables now trigger full
1768 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1769 more often programmer error than deliberate exploitation of undefined
1771 * optimization: the hash algorithm for strings has changed to one
1772 that is less vulnerable to spurious collisions. (thanks to Juho
1774 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1775 needless bounds checking. (thanks to Juho Snellman)
1776 * optimization: implemented multiplication as a modular
1777 (UNSIGNED-BYTE 32) operation on the PPC backend.
1778 * fixed some bugs revealed by Paul Dietz' test suite:
1779 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1781 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1782 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1783 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1785 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1787 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1789 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1790 their output stream on EOF from read.
1791 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1792 have been read to end-of-file.
1793 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1795 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1796 description of determination of which consecutive characters
1798 ** Printing the "Space" character with escaping on now yields "#\\ ",
1799 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1800 ** Reading floating-point numbers with *READ-BASE* set to a number
1801 less than 10 works correctly.
1802 ** Reading floating-point numbers with *READ-BASE* set to a number
1803 more than 10 works correctly.
1804 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1805 the readtable currently in effect.
1807 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1808 * minor incompatible change: parsing of namestrings on a physical
1809 (Unix) host has changed; numbers after the final #\. in a
1810 namestring are no longer interpreted as a version field. This is
1811 intented to be largely invisible to the user, except that the
1812 meaning of the namestring "*.*.*" has changed: it now refers to a
1813 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1814 should usually be replaced by
1815 (make-pathname :name :wild :type :wild :version :wild)
1816 with the added benefit that this is more likely to be portable.
1817 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1818 option to OPEN now signals an error if the file being opened
1819 exists; this may have an impact on existing code.
1820 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1821 signals received, on the PowerPC platforms (both Linux and
1822 Darwin). (thanks to Pierre Mai for pointing out the location of
1824 * several fixes on OS X: The system now builds and runs cleanly on
1825 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1826 (thanks to Brian Mastenbrook)
1827 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1828 second-resolution: integer multiples of 1/3600 between -24 and 24.
1829 (thanks to Vincent Arkesteijn)
1830 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1831 type when called with 1 argument; PEEK-CHAR checked type of
1832 PEEK-TYPE only after having read first character from a
1833 stream. (reported by Peter Graves)
1834 * bug fix: the garbage collector now has much better locality
1835 behaviour, and in particular no longer treats all memory as being
1836 exhausted when many small objects point to each other in a deeply
1838 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1839 recognized as being TYPEP their class.
1840 * bug fix: the PUSHNEW documentation string has been corrected.
1841 (thanks to Vincent Arkesteijn)
1842 * bug fix: defaulting of the value for the last of an atypically
1843 large number of multiple values being bound was not being
1844 performed correctly on the Alpha or PPC platforms
1845 * optimization: implemented multiplication as a modular
1846 (UNSIGNED-BYTE 32) operation on the x86 backend.
1847 * optimization: SEARCH on simple-base-strings can now be open-coded.
1848 (see also contrib/compiler-extras.lisp for inspiration for
1849 teaching the compiler about the Boyer-Moore algorithm).
1850 * value, returned by MAX (and MIN) called with several EQUALP, but
1851 not EQL, arguments now does not depend on compiler settings.
1852 * fixed some bugs revealed by Paul Dietz' test suite:
1853 ** in stack analysis liveness information is propagated from
1854 non-local entry points.
1855 ** pathwise CAST removing failed when the CAST node did not start
1857 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1858 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1860 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1861 host is already defined.
1862 ** RENAME-FILE works on streams instead of signalling an internal
1864 ** PEEK-CHAR uses the current readtable when determining whether
1865 or not a character is whitespace.
1866 ** MERGE-PATHNAMES handles the case when the pathname does not
1867 specify a name while the default-pathname specifies a version.
1868 ** Pathnames now stand a better chance of respecting print/read
1870 ** Attempting to use standardized file system operators with a
1871 pathname with invalid :DIRECTORY components signals a
1873 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1875 ** DIRECTORY on logical pathnames is more correct.
1876 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1877 signal a TYPE-ERROR if their argument is not a stream.
1878 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1879 designator argument does not designate a stream.
1880 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1881 examining the synonym.
1882 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1884 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1885 element-type larger than ([UN]SIGNED-BYTE 32).
1887 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1888 * When built with the :SB-FUTEX feature, threaded builds now take
1889 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1890 for faster/more reliable mutex and condition variable support.
1891 * Incompatible change (but one you probably shouldn't have been using
1892 anyway): the interface and code for arbitrating between multiple
1893 threads in the same user session has been redesigned.
1894 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1895 error when called without an explicit environment argument.
1896 (thanks to Nikodemus Siivola)
1897 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1898 confused about their position. (thanks to Adam Warner and Gerd
1900 * bug fix: Pretty printing backquoted forms with unquotations in the
1901 argument list position of various code constructs such as LAMBDA
1902 now works correctly. (reported by Paul Dietz)
1903 * bug fix: Pretty printing unquotations no longer loses all
1904 stream position information.
1905 * optimization: performance of string output streams is now less
1906 poor for multiple small sequence writes.
1907 * optimization: performance of CSUBTYPEP in the presence of complex
1908 expressions involving CONS and NOT many times has been improved.
1909 (reported by Paul Dietz)
1910 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1912 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1913 streams for the REPL, for the debugger, and so on. (thanks to
1915 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1916 * fixed some bugs revealed by Paul Dietz' test suite:
1917 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1918 is ignored if it is too small, rather than propagating through
1919 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1920 ** extremely complex negations of CONS types were not being
1921 sufficiently canonicalized, leading to inconsistencies in
1923 ** VALUES tranformer lost derived type.
1925 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1926 * fixed a bootstrapping bug: the build process no longer assumes
1927 that the various BOOLE-related constants have the same value in
1928 host and target lisps. (noted by Paul Dietz' test suite on an
1929 SBCL binary built from CLISP)
1930 * The system can now be dynamically linked on the MIPS platform,
1931 which enables dynamic loading of foreign code from Lisp. (thanks
1932 to Ralf Baechle for discussions on the MIPS ABI)
1933 * The system now records debugging information for its own source
1934 files in a filesystem-position-independent manner, relative to
1935 the "SYS" logical host.
1936 * fixed a compiler bug: MV-LET convertion did not check references
1937 to the "max args" entry point. (reported by Brian Downing)
1938 * tweaked disassembly notes to be less confident about proclaiming
1939 some instruction as an LRA. (thanks to Brian Downing)
1940 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1941 now each have their own history, command character, and other
1942 characteristics. (thanks to David Lichteblau)
1943 * fixed some bugs revealed by Paul Dietz' test suite:
1944 ** compiler failure in compiling LOGAND expressions including a
1946 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1947 shift greater than 32.
1948 ** FLUSH-DEST did not mark blocks for type check regeneration.
1949 ** HANDLER-CASE failed to accept declarations in handler clauses
1950 in some circumstances.
1952 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1953 * New code in contrib/sb-introspect (still probably not entirely
1954 stable yet) provides some support for smart Lisp development
1955 environments like SLIME.
1956 * The conditions signalled for errors occurring when loading .fasl
1957 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1958 in a way which should help ASDF recover gracefully.
1959 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1960 stuff has been cleaned up. If you code contrib/ stuff, this might
1961 affect you, and you can look at contrib/README, contrib/STANDARDS,
1962 and/or the 0.8.4.27 diff to check.
1963 * In full calls the compiler now does not generate checks for declared
1964 argument types for all arguments.
1965 * various threading fixes
1966 ** and some experimental patches which didn't make it into
1967 the main tree for this release, but which are shipped in
1968 contrib/experimental-thread.patch as a possible fix for some
1969 failures (deadlock, spinning...) in GC-intensive multithreaded
1971 * fixed PPC build problem (source code incompatibility of different
1972 library versions): added offsetof() hackery which attempts to divine
1973 where glibc maintainers put uc_mcontext today
1974 * fixed bug 282: compiler does not trust type assertions while passing
1975 arguments to a full call.
1976 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1977 &OPTIONAL VALUES type parameter.
1978 * fix bug 214: algorithm for noting rejected templates is now more
1979 similar to that of template seletion. (also reported by rydis on
1981 * fixed bug 141b: printing backquoted information readably and prettily
1982 inserts a space where necessary.
1983 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1984 (CHARACTER 10) are now reported as errors, rather than propagated
1985 as unknown types. (reported by piso on #lisp)
1986 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1987 with values NIL and :ERROR. (thanks to Milan Zamazal)
1988 * fixed bug 191c: CLOS now does proper keyword argument checking as
1989 described in CLHS 7.6.5 and 7.6.5.1.
1990 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1991 longer raise an error; further, using a list as a for-as-arithmetic
1992 counter now raises a meaningful error.
1993 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1994 now understood by sequence creation functions such as MAKE-SEQUENCE
1996 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1997 a STRING-INPUT-STREAM.
1998 * compiler enhancement: SIGNUM is now better able to derive the type
2000 * type declarations inside WITH-SLOTS are checked. (reported by
2002 * fixed some bugs revealed by Paul Dietz' test suite:
2003 ** incorrect optimization of TRUNCATE for a positive first
2004 argument and negative second.
2005 ** compiler failure in let-convertion during flushing dead code.
2006 ** compiler failure while deriving type of TRUNCATE on an
2007 interval, containing 0.
2008 ** ASH of a negative bignum by a negative bignum count now returns
2010 ** intersection of CONS types now canonicalizes properly, fixing
2011 inconsistencies in SUBTYPEP.
2013 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2014 * incompatible change: The --disable-debugger command line
2015 option now clobbers the debugger at a more fundamental
2016 level, by redefining #'INVOKE-DEBUGGER instead of by
2017 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2018 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2019 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2020 enter the debugger REPL and then suffer recursive errors
2021 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2022 while under the new system, BREAK in --disable-debugger mode
2023 terminates the system just as an unhandled error would.
2024 * fixed compiler performance when processing loops with a step >1;
2025 * bug fix: DOCUMENTATION now retrieves generic function
2026 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2027 support has been systematized, and now supports the methods
2028 specified by ANSI, along with a default method and a method for
2029 slot documentation. (reported by Nathan Froyd)
2030 * bug fix: effective methods associated with a generic function are
2031 no longer cached over a change of that generic function's method
2032 combination. (reported by Andreas Fuchs)
2033 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2034 names a non-existent directory. (thanks to Andreas Fuchs)
2035 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2036 the PPC platform, lead to stack corruption; this has been fixed.
2037 (reported by Rainer Joswig)
2038 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2039 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2040 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2041 arithmetic in general, is now much more reliable on the PPC
2043 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2044 platform now returns the right answer.
2045 * optimization: restored some effective method precomputation in
2046 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2047 precomputation is now tunable.
2048 * optimization: compiler-internal data structure use has been
2049 reviewed, and changes have been made that should improve the
2050 performance of the compiler by about 20%.
2051 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2052 simple-base-strings and simple-bit-vectors is improved.
2053 * optimization: the optimization of 32-bit logical and arithmetic
2054 functions introduced in version 0.8.3 on the x86 has been
2055 implemented on the mips, ppc and sparc platforms; an
2056 implementation of the same facility, but for 64-bit arithmetic,
2057 has been added for the alpha.
2058 * microoptimization: the compiler is better able to make use of the
2059 x86 LEA instruction for multiplication by constants.
2060 * bug fix: in some situations compiler did not report usage of
2061 generic arithmetic in (SPEED 3) policy.
2062 * bug 145b fix: compiler used wrong type specifier while converting
2063 MEMBER-types to numeric.
2064 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2066 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2067 index argument now works properly on the Alpha platform.
2068 * bug fix: floating point exception treatment on the Alpha platform
2070 * bug fix: FILE-POSITION works much better on string input and
2071 output streams. (thanks to Nikodemus Siivola)
2072 * bug fix: many threading/garbage collection symptoms sorted.
2073 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2074 might be pseudo-atomic.
2075 * internal change: Stopping for GC is now done with signals not
2076 ptrace. GC is now done in whichever thread wanted it, instead of
2078 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2080 * bug fix: result form in DO is not contained in the implicit
2082 * incompatible change: ICR structure is changed; the value part of
2083 CONTINUATION is now called LVAR; corresponding functions are
2084 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2085 * added type deriver for ISQRT (thanks to Robert E. Brown).
2086 * bug fix: better support for loading from the command line when an
2087 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2089 * fixed some bugs revealed by Paul Dietz' test suite:
2090 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2091 ** ROUND and FROUND now give the right answer when given very
2092 small float arguments.
2093 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2095 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2096 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2097 ** LCM should return a non-negative integer.
2098 ** PARSE-INTEGER returned the index of a terminator instead of the
2099 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2100 ** PARSE-INTEGER returned an incorrect index being applied to a
2102 ** LCM with two arguments of 0 returns 0 rather than signalling
2104 ** unsigned addition of a 32-bit constant with the high bit set no
2105 longer causes an internal compiler error on the x86.
2106 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2107 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2108 with negative last argument.
2109 ** byte specifiers with zero size and position no longer cause
2110 an error during type derivation.
2111 ** bignum multiplication on the Alpha platform now returns the
2113 * porting: The system now builds on SuSE AMD64, although it still
2114 generates a 32-bit binary.
2115 * .fasl file incompatibility: The fasl file version number has
2116 been incremented (because of the changes to internal compiler
2117 data structures referred to above).
2119 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2120 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2121 more accurately, on the Darwin kernel running on PowerPC hardware.
2122 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2123 * Compiler code deletion notes now signal a condition of type
2124 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2125 an associated MUFFLE-WARNING restart.
2126 * The compiler now performs limited argument count validation of
2127 constant format strings in FORMAT, and where appropriate in ERROR,
2128 CERROR and WARN. (thanks to Gerd Moellmann)
2129 * New ASDF-INSTALL contrib can be used for automatic download and
2130 installation of third-party Lisp code from CCLAN or other sites
2132 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2133 which forces another thread to execute a function supplied by the
2135 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2136 now accept and act upon their :ELEMENT-TYPE keyword argument.
2137 (reported by Martin Atzmueller, Edi Weitz)
2138 * bug fix: FILE-POSITION now accepts position designators up to
2139 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2140 is the greater. (thanks to Patrik Nordebo)
2141 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2142 Kalle Olavi Niemitalo)
2143 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2144 printable. (reported by Eric Marsden)
2145 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2146 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2147 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2148 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2149 (thanks to Stig Sandoe)
2150 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2151 UNREAD-CHAR now correctly includes the unread character in the
2152 target sequence. (thanks to Gerd Moellmann)
2153 * bug fix in threaded builds: the system can now be suspended and
2154 resumed by shell job control with minimal disruption.
2155 * bug fixes in times and timezones >2038AD
2156 * better handling of "where is GNU make?" problem in build scripts
2157 (thanks to Nikodemus Siivola)
2158 * new optimization: inside a named function any reference to a
2159 function with the same name is considered to be a self-reference;
2160 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2161 optimization quality.
2162 * new optimization on x86: logical functions and + now have
2163 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2164 used when the result is truncated to 32 bits.
2165 * VALUES declaration is partially enabled.
2166 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2167 * fixed some bugs revealed by Paul Dietz' test suite:
2168 ** The system now obeys the constraint imposed by
2169 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2170 types form a lattice under type intersection.
2171 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2172 ** ASSOC now ignores NIL elements in an alist.
2173 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2174 and (1+ MOST-POSITIVE-FIXNUM) answers.
2175 ** The addition of a method with invalid qualifiers to a generic
2176 function does not cause an error to be signalled immediately;
2177 a warning is signalled, and the error is generated only on
2178 calling the generic function.
2179 * changed .fasl file version number, in part to add type codes for
2180 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2181 obscure ANSI requirements
2183 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2184 * fixed bug 148: failure to inline-expand a local function left
2185 garbage, confusing the compiler.
2186 * fixed bugs 3cd: structure slot readers perform type check if the
2187 slot can have an invalid value (i.e. it is either not initialized
2188 or can be written with a less specific slot writer).
2189 * bug fix: the compiler now traps array references to elements off
2190 the end of an array; previously, the bounds checking in some
2191 circumstances could go off-by-one.
2192 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2194 * type declarations for array element types now obey the description
2195 on the CLHS page "Declaration TYPE", as per discussions on
2196 sbcl-help around 2003-05-08. This means that a declaration
2197 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2198 declaration, all references to BAR will be asserted or assumed
2199 (with THE, so dependent on compiler policy) to involve objects of
2200 type FOO. Note that no such declaration is implied in
2201 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2202 * declared types of functions from the "Conditions"
2203 chapter. (reported by Paul Dietz)
2204 * bug fix: CERROR accepts a function as its first argument.
2205 * bug fix: NTH an NTHCDR accept a bignum as index
2206 arguments. (reported by Adam Warner)
2207 * optimization: character compare routines now optimize comparing
2208 against a constant character. (reported by Gilbert Baumann)
2209 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2210 argument now works properly on the MIPS platform.
2211 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2212 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2213 declared to have a functional type, does not cause an error
2215 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2216 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2217 * fixed bug: if last continuation of a deleted block has a
2218 destination, this destination should be deleted too. (reported by
2220 * fixed a bug in the bootstrap process: the host compiler's values
2221 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2222 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2223 test case from Patrik Nordebo)
2224 * improved the ability of the disassembler on the PPC platform to
2225 provide helpful disassembly notes.
2226 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2227 the class in more cases than previously.
2228 * bug fix: FILE-POSITION now understands :START and :END for
2229 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2230 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2231 8) data. (thanks to David Lichteblau)
2232 * bug fix: it is possible to add a method to a generic function
2233 without lambda list.
2234 * bug fix: reader failed to signal END-OF-FILE inside an
2235 object representation. (reported by Nikodemus Siivola)
2236 * fixed some bugs revealed by Paul Dietz' test suite:
2237 ** LAST and [N]BUTLAST should accept a bignum.
2238 ** condition slot accessors are methods.
2239 ** (VECTOR NIL) is a subtype of STRING.
2241 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2242 * minor incompatible change: some nonsensical specialized lambda
2243 lists (used in DEFMETHOD) which were previously ignored now signal
2245 * minor incompatible change: the system is now aware of the types of
2246 variables in the COMMON-LISP package, and will signal errors for
2247 most violations of these type constraints (where previously they
2248 were silently accepted).
2249 * minor incompatible change: COMPILE-FILE now uses the freedom
2250 afforded (ANSI 3.2.2.3) to use derived function types for
2251 functions defined in the same file. This also permits the system
2252 to warn on static type mismatches and function
2253 redefinition. (Currently it does not work with high DEBUG level.)
2254 * minor incompatible change: VALUES declaration is disabled.
2255 * When issuing notes, the compiler now signals a condition of type
2256 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2257 restart for use in user handlers. It is expected that the
2258 COMPILER-NOTE condition will eventually become a condition
2259 supertype to a hierarchy of note types, which will then be
2260 handleable in a similar fashion. However, at the moment, no such
2261 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2262 but it's an implementation detail, not a classification for the
2264 * Changes in type checking closed the following bugs:
2265 ** type checking of unused values (192b, 194d, 203);
2266 ** template selection based on unsafe type assertions (192c, 236);
2267 ** type checking in branches (194bc).
2268 * A short form of VALUES type specifier has ANSI meaning (it has
2269 increased the number of situations when SBCL cannot perform type
2271 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2272 keywords or constants is permissible.
2273 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2274 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2275 classes. (thanks to Antonio Martinez)
2276 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2277 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2278 argument to a pretty-print stream. Instead, it leaves any such
2279 operations to DESCRIBE-OBJECT methods.
2280 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2282 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2283 lambda lists. (thanks to David Lichteblau)
2284 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2285 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2286 (thanks to Gerd Moellmann)
2287 * fixed bug 246: increased compilation speed of long
2288 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2290 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2292 * DEFCONSTANT now throws a condition of type
2293 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2294 constant to a non-EQL value; CONTINUE and ABORT restarts
2295 respectively change and preserve the value.
2296 * fixed bug 63: The code walker, part of the implementation of CLOS,
2297 is now better at handling symbol macros.
2298 * bug fix: There is no longer an internal implementation type named
2299 CL:LENGTH. (reported by Raymond Toy)
2300 * bug fix: In macro-like defining macros/special operators the
2301 implicit block does not enclose the lambda list.
2302 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2303 enclosed in parentheses) are not suitable as type specifiers, and
2304 their use properly signals an error now.
2305 * bug fix: An argument count mismatch for a type specifier in code
2306 being compiled no longer causes an unhandled error at compile
2307 time, but signals a compile-time warning.
2308 * fixed simple vector readable printing
2309 * bug fix: DESCRIBE takes more care over whether the class
2310 precedence list slot of a class is bound before accessing it.
2311 (reported by Markus Krummenacker)
2312 * bug fix: FORMATTER can successfully compile pretty-printer format
2313 strings which use variants of the ~* directive inside.
2314 * bug fix: SEARCH now applies its TEST predicate to the elements of
2315 the arguments in the correct order. (thanks to Wolfhard Buss)
2316 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2317 in type inference. (thanks to Robert E. Brown)
2318 * bug fix: Reading in symbols with an explicit package name of ""
2319 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2320 * fixed some bugs revealed by Paul Dietz' test suite:
2321 ** NIL is now allowed as a structure slot name.
2322 ** Arbitrary numbers, not just REALs, are allowed in certain
2323 circumstances in LOOP for-as-arithmetic clauses.
2324 ** Multiple class redefinitions before slot access no longer
2325 causes a type error.
2326 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2327 association between the name and a class.
2328 ** Generic functions with non-standard method-combination and over
2329 five methods all of which return constants no longer return NIL
2330 after the first few invocations. (thanks to Gerd Moellmann)
2331 ** CALL-NEXT-METHOD with no arguments now passes the original
2332 values of the arguments, even in the presence of assignment.
2333 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2335 ** DISASSEMBLE works with closures and funcallable instances.
2336 ** ADD-METHOD now returns the generic function, not the new method.
2337 ** FIND-METHOD signals an error if the lengths of the specializers
2338 is incompatible with the generic function, even if the ERRORP
2340 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2341 which its argument is a member.
2342 ** DEFCLASS only redefines the class named by its class-name
2343 argument if that name is the proper name of the class;
2344 otherwise, it creates a new class.
2345 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2346 of the UNBOUND-SLOT condition to the name of the slot.
2347 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2348 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2349 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2350 SLOT-MAKUNBOUND in the specified fashion.
2352 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2353 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2354 cross-compilation host. As a consequence, we can now bootstrap our
2355 way up to SBCL starting with a bare gcc toolchain and human-readable
2356 source code (first the source to CLISP, then the source to SBCL).
2357 * A contributed module containing a partial implementation of the
2358 simple-streams interface has been included. (thanks to Rudi
2360 * A contributed module implementing the RFC1321 Message Digest
2361 Algorithm, known as MD5, has been included.
2362 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2363 no longer has any effect, as the code controlled by this feature
2364 has been deleted. (As far as we know, no-one has ever built using
2365 this feature, and its semantics were confused in any case).
2366 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2367 work on conditions (as required by the ANSI specification),
2368 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2369 expected behaviour on conditions. Users should note, however,
2370 that such behaviour is not required by the ANSI specification,
2371 and so use of this behaviour may render their code unportable.
2372 * fixed some bugs revealed by Paul Dietz' test suite:
2373 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2375 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2376 ** SXHASH on condition objects no longer returns NIL.
2377 ** :ALLOCATION :CLASS slots are better treated; their values are
2378 updated on class redefinition, and initforms inherited from
2379 superclasses are applied.
2380 ** REMOVE-METHOD returns its generic function argument even when
2381 no method was removed.
2382 ** SHARED-INITIALIZE now initializes the values of the requested
2383 slots, including those with :ALLOCATION :CLASS.
2384 ** ALLOCATE-INSTANCE now works on structure classes defined via
2385 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2387 ** SLOT-EXISTS-P now works on conditions, as well as structures
2389 ** MAKE-LOAD-FORM now has the required methods on
2390 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2391 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2392 keyword, and now implements the SLOT-NAMES argument.
2393 ** methods with &OPTIONAL arguments no longer allow too many
2394 arguments to be passed in the call without error.
2395 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2396 option is consistent with the required arguments of the generic
2397 function lambda list.
2398 * bug fix: REQUIRE accepts a string designator. (Thanks to
2400 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2401 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2402 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2403 * bug fix: The compiler now checks for duplicated variables in macro
2405 * bug fix: SETQ on globals returns the correct value.
2406 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2407 not a COMPILER-ERROR (followed by some other strange error on
2408 choosing the CONTINUE restart).
2409 * bug fix: make.sh and friends are now more consistent in the way that
2410 they look for GNU "make".
2412 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2413 * experimental native threads support (on x86 Linux >=2.4 only).
2414 This is not compiled in by default: you need to add :SB-THREAD to
2415 the target features. See the "Beyond ANSI" chapter of the manual
2417 * fix for longstanding nonANSIism: The old distinction between
2418 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2419 The return value from CL:FIND-CLASS is now a CLOS class, and
2420 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2421 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2422 * An interface to the MetaObject Protocol, as described in Kiczales,
2423 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2424 MIT Press, 1991, is available from the SB-MOP package.
2425 * incompatible change: the SB-PCL package should now be considered
2426 a private implementation detail, and no longer a semi-private MOP
2428 * minor incompatible change: due to rearrangement for threads, the
2429 control stack and binding stack are now allocated at arbitrary
2430 addresses instead of being hardcoded per-port. Users affected by
2431 this probably have to be doing advanced things with shared
2432 libraries, and will know who they are.
2433 * minor incompatible change: Previously, all --eval forms used were
2434 processed with READ before any of them were processed with EVAL.
2435 Now each --eval form is processed with both READ and EVAL before
2436 the next --eval form is processed. (Thus package operations like
2437 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2438 work as the user might reasonably expect.)
2439 * minor incompatible change: *STANDARD-INPUT* is now only an
2440 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2442 * minor incompatible change: Y-OR-N-P is now character-oriented,
2443 not line oriented. Also, YES-OR-NO-P now works without errors.
2444 (thanks to Antonio Martinez)
2445 * sb-aclrepl module improvements: an integrated inspector, added
2446 repl features, and a bug fix to :trace command.
2447 * Known functions, which cannot be open coded by the backend, are
2448 considered to be able to check types of their arguments. (fixing
2449 a bug report by Nathan J. Froyd)
2450 * fixed a bug in computing method discriminating functions: It is
2451 now possible to define methods specialized on classes which have
2452 forward-referenced superclasses. (thanks to Gerd Moellmann)
2453 * fixed evaluation order in optional entries (reported by Gilbert
2455 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2456 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2457 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2458 required-by-AMOP NAME argument, as well as CLASS and
2459 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2460 * fixed bug 20: DEFMETHOD can define methods using names that are
2461 not the proper names of classes to designate class specializers.
2462 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2463 Unix file descriptors, instead of blowing up. (thanks to Antonio
2465 * Garbage collection refactoring: user-visible change is that a
2466 call to the GC function during WITHOUT-GCING will not do garbage
2467 collection until the end of the WITHOUT-GCING. If you were doing
2468 this you were probably losing anyway.
2469 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2470 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2471 TYPEP the latter but not the former.
2472 * The compiler issues a full WARNING for calls to undefined functions
2473 with names from the CL package.
2474 * MAP-INTO for a vector destination is open coded. (reported by
2475 Brian Downing on c.l.l)
2476 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2477 documentation string.
2478 * fixed some bugs revealed by Paul Dietz' test suite:
2479 ** COPY-ALIST now signals an error if its argument is a dotted
2481 ** Condition slots are now accessed more correctly in the presence
2482 of multiple initargs for a given slot.
2483 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2484 exclude restarts of the same name associated with a different
2486 ** DEFCLASS of forward-referenced classes with another
2487 forward-referenced class in the superclasses list no longer
2489 ** Condition slots are now initialized once each, not multiple
2490 times. (thanks to Gerd Moellmann)
2491 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2493 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2494 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2495 arguments contain duplicated elements.
2496 ** RESTART-CASE understands local macros.
2497 ** RESTART-CASE associates exactly its own restarts with a condition.
2498 ** ENDP in safe mode checks its argument to be of type LIST.
2499 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2500 in question is unbound.
2501 ** Optimized MAKE-INSTANCE functions no longer cause internal
2502 assertion failures in the presence of duplicate initargs.
2503 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2504 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2505 propagated even in the ctor optimized implementation of
2507 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2509 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2510 * a better implementation of SXHASH on (simple) bit vectors,
2511 measured both in execution speed and in distribution of results
2512 over the positive fixnums, has been installed. Likewise, a better
2513 implementation of EQUAL for simple bit vectors is now available.
2514 * fixed CEILING optimization for a divisor of form 2^k.
2515 * fixed bug 240 (emitting extra style warnings "using the lexical
2516 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2517 by Antonio Martinez)
2518 * fixed SXHASH, giving different results for NIL depending on type
2519 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2520 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2521 variable. (found by Rolf Wester)
2522 * SBCL does not ignore type declarations for special
2523 variables. (reported by rif on c.l.l 2003-03-05)
2524 * some bug fixes in contrib/sb-aclrepl/
2525 * fixed some bugs revealed by Paul Dietz' test suite:
2526 ** a bug in the CONS type specifier, whereby the CAR and CDR
2527 types got intertwined, has been fixed;
2528 ** the type system is now able to reason about the interaction
2529 between INTEGER and RATIO types more completely;
2530 ** APPEND, [N]REVERSE and NRECONC check that those their
2531 arguments, which must be proper lists, are really so;
2532 ** An array specialized to be unable to hold elements has been
2533 implemented, as required -- yes, really -- by ANSI;
2534 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2535 on malformed property lists;
2537 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2538 * incompatible packaging change: in line with Unix convention,
2539 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2540 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2541 * REQUIRE and PROVIDE are now optionally capable of doing something
2542 useful. See the documentation string for REQUIRE.
2543 * infrastructure for a managed SBCL contrib system: contributed
2544 modules in this release include:
2545 ** the ASDF system definition facility;
2546 ** an interface to the BSD Sockets API;
2547 ** an ACL-like convenience interface to the repl;
2548 (thanks to Kevin Rosenberg)
2549 ** an implementation of ROTATE-BYTE, with efficient implementation
2551 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2552 gives a closer approximation to the right answer than previously.
2553 (thanks to Raymond Toy)
2554 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2555 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2556 optional environment arguments, as required by ANSI.
2557 * fixed bugs in other functions taking environment objects, allowing
2558 calls with an explicit NIL environment argument to be compiled
2560 * fixed bug 228: primary return values from
2561 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2562 COMPILE or FUNCTION.
2563 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2564 :TYPE will no longer signal errors on innocuous objects.
2565 * fixed bug 231b: SETQ is better at respecting type declarations in
2566 the lexical environment.
2567 * fixed a bug in DEFCLASS: classes named by symbols with no or
2568 unprintable packages can now be defined.
2569 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2570 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2571 * fixed compiler failure related to checking types of functions.
2572 (reported by Robert E. Brown)
2573 * the compiler is now much more consistent in its error-checking
2574 treatment of bounding index arguments to sequence functions: in
2575 (SAFETY 3) code, errors will be signalled in almost all cases if
2576 invalid sequence bounding indices are passed to functions defined
2577 by ANSI to operate on sequences.
2578 * fixed a bug in the build procedure: documentation of SBCL-specific
2579 packages is now preserved and available in the final Lisp image.
2580 * lifted FDEFINITION lookup out of loops in the implementation of
2581 many list operations. (thanks to Robert E. Brown)
2582 * fixed a bug in the reader: the #n# reader macro now works for
2583 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2584 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2585 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2586 E. Brown and Tony Martinez respectively)
2587 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2588 SLOT-BOUNDP: in particular, it is now able to optimize them much
2589 better, and is now not vulnerable to having packages renamed.
2590 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2591 always called when a slot is not present in an instance. (thanks
2593 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2594 longer signal an error on unreading a character following EOF on
2595 the previous constituent stream. (thanks to Tony Martinez)
2596 * fixed some bugs revealed by Paul Dietz' test suite:
2597 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2598 not just nonnegative fixnums;
2599 ** the logical bit-array operators such as BIT-AND now accept an
2600 explicit NIL for their "opt-arg" argument (to indicate a
2601 freshly-consed result bit-array);
2602 ** ELT now signals an error on an invalid sequence index in safe
2604 ** the type system is now cleverer about negations of numeric
2605 types, and consequently understands the BIGNUM and RATIO types
2607 ** the type system is now cleverer about the interaction between
2608 INTEGER and RATIO types: while bugs still remain, many more
2609 cases are accurately computed;
2610 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2611 if it is in the last clause;
2612 ** CONSTANTLY now correctly returns a side-effect-free function in
2614 ** DECLARE is no longer treated as a special-operator; in
2615 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2616 * incremented fasl file version number due to the change in the
2617 DEFSTRUCT-SLOT-DESCRIPTION structure.
2619 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2620 * minor incompatible change: code processed by the "interpreter" or
2621 EVAL now has a compilation optimization policy of (DEBUG 2)
2622 (changed from (DEBUG 1)) to improve debuggability of interactive
2623 development, and to allow the use of the debug RETURN command in
2625 * an experimental implementation of the RETURN command for the
2626 debugger has been included. (thanks to Frederik Kuivinen)
2627 * fixed bug 62: constraints were not propagated into a loop.
2628 * fixed bug in embedded calls of SORT (reported and investigated by
2630 * fixed some bugs revealed by Paul Dietz' test suite:
2631 ** printing and reading of arrays with some dimensions having
2632 length 0 (thanks to Gerd Moellmann);
2633 ** BOA constructor with &AUX argument without a default value does
2634 not cause a type error;
2635 ** CONSTANTP now returns true for all self-evaluating objects.
2637 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2638 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2639 accessors that are related by inheritance, as specified in the
2640 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2641 Valtteri Vuorikoski)
2642 * The compiler is now able to inline functions that were defined in
2643 a complex lexical environment (e.g. inside a MACROLET).
2644 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2646 * Support for the upcoming FreeBSD-5.0 release has been included.
2647 (thanks to Dag-Erling Smorgrav)
2648 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2649 effect when it is not in a toplevel context.
2650 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2651 stand a better chance of being correct. (thanks to Gerd
2653 * fixed bug in COERCE, which now signals an error on coercing a
2654 rational to a bounded real type which excludes the expected
2656 * The compiler is now able to derive types more accurately from the
2657 COERCE and COMPILE functions.
2658 * fixed bug 223: functional binding is considered to be constant
2659 only for symbols in the CL package.
2660 * fixed bug 231: SETQ did not check the type of a variable being set
2661 (reported by Robert E. Brown)
2662 * A new optimization for MAKE-INSTANCE has been included, fixing
2663 various bugs (including relating to :ALLOCATION :CLASS slots and
2664 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2666 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2667 ** As required by ANSI, LOOP now disallows anonymous collection
2668 clauses such as COLLECT I in conjunction with aggregate boolean
2669 clauses such as THEREIS (= I 1);
2670 ** LOOP now signals an error when any variable is reused in the
2671 same loop (including the potentially useful construct analogous
2672 to WITH A = 1 WITH A = (1+ A);
2673 ** IT is only a special loop symbol within the first clause of a
2674 conditional loop clause;
2675 ** LOOP with a typed iteration variable over a hashtable now
2676 signals a type error iff it should.
2677 * fixed some other bugs revealed by Paul Dietz' test suite:
2678 ** FILE-STREAM now names the class previously known as FD-STREAM;
2679 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2680 argument) no longer signals an error;
2681 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2682 of the slot symbol, rather than using the current package
2683 ((:CONC-NAME "") continues to intern the slot's name in the
2685 * incremented fasl file version number, because of the incompatible
2686 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2687 of the new implementation of DEFINE-COMPILER-MACRO.
2689 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2690 * Support for building SBCL for MIPS platforms running in
2691 little-endian mode has now been checked in, and basic
2692 functionality on said platforms verified.
2693 * minor incompatible change: PCL now records the pathname of a file
2694 in which methods and the like are defined, rather than its
2696 * minor incompatible change: TRUENAME now considers the truename of
2697 a file naming a directory to be the pathname with :DIRECTORY
2698 component indicating that directory.
2699 * minor incompatible change: a NAMED clause in the extended form of
2700 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2701 reason for the previous behaviour is unclear.
2702 * more systematization and improvement of CLOS and MOP conformance
2703 in PCL (thanks to Gerd Moellman and Pierre Mai):
2704 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2706 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2707 primary methods with no specializers;
2708 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2710 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2711 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2712 FORWARD-REFERENCED-CLASSes; error reporting on
2713 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2715 ** SXHASH on CLOS instances now uses a slot internal to the
2716 instance to return different numbers on distinct instances,
2717 while preserving the same return value through invocations of
2719 ** DEFMETHOD signals errors when methods with longer incongruent
2720 lambda lists are added to generic functions;
2721 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2722 CLASS, as specified in AMOP;
2723 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2724 on the order returned by the primary method for classes of
2725 class STANDARD-CLASS;
2726 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2727 * fixed some bugs shown by Paul Dietz' test suite:
2728 ** DOLIST puts its body in TAGBODY;
2729 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2731 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2732 value producing form;
2733 ** if more variables are given to PROGV than values, extra
2734 variables are bound and made to have no value;
2735 ** NSUBSTITUTE on list arguments gets the right answer with
2737 ** ELT signals an error of type TYPE-ERROR when the index argument
2738 is not a valid sequence index;
2739 ** LOOP signals (at macroexpansion time) an error of type
2740 PROGRAM-ERROR when duplicate variable names are found;
2741 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2742 ** FUNCALL of special-operators now cause an error of type
2744 ** PSETQ now works as required in the presence of side-effecting
2745 symbol-macro places;
2746 ** NCONC accepts any object as its last argument;
2747 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2749 ** loop-for-as-package does not require a package to be explicitely
2751 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2753 * fixed bug 166: compiler preserves "there is a way to go"
2754 invariant when deleting code.
2755 * fixed bug 172: macro lambda lists with required arguments after
2756 &REST arguments now cause an error to be signalled. (thanks to
2758 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2759 bug. (thanks to Matthew Danish)
2760 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2762 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2763 arguments are lexically rebound. (thanks to Gerd Moellmann and
2765 * fixed bug 194: error messages are now more informative when there
2766 is no primary method applicable in a call to a generic
2767 function. (thanks to Gerd Moellmann)
2768 * fixed bug in command line argument checking (thanks to Julian
2770 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2771 (thanks to Matthew Danish)
2772 * incremented fasl file version number, because of the
2773 SXHASH-related changes in the layout of CLOS data structures
2775 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2776 * minor incompatible change: The runtime (the Unix executable named
2777 "sbcl") is now much pickier about the .core files it will load.
2778 Essentially it now requires .core files to descend from the same
2779 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2780 as the runtime does. (The intent is to prevent the crashes which
2781 can occur, and which can even be reported as mysterious failures,
2782 when people patch the sources or change the build parameters
2783 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2784 sbcl and .core files.)
2785 * fixed bug: VALUES-LIST is no longer optimized away.
2786 * fixed bug 142: The FFI conversion of C string values to Lisp
2787 string values no longer conses excessively. (thanks to Nathan
2788 Froyd porting Raymond Toy's fix to CMU CL)
2789 * began to systematize and improve MOP conformance in PCL (thanks to
2790 Nathan Froyd, Gerd Moellman and Pierre Mai):
2791 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2793 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2794 ** FINALIZE-INHERITANCE is now called on class finalization;
2795 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2796 argument precedence order.
2797 * fixed bug 202: The compiler no longer fails on functions whose
2798 derived types contradict their declared type.
2799 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2800 so it can be non-toplevel.
2801 * The fasl file version number has changed (because of the new
2802 implementation of DEFMACRO).
2803 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2804 safe code, that any length requirement by their type-specifier
2805 argument is valid. The exceptions to this are described in bug
2807 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2808 functions now check the types of their inputs as required by ANSI.
2809 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2810 introduced symbol is DECLAREd to be SPECIAL.
2811 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2812 * fixed bug: :COUNT argument to sequence functions may be negative
2813 * fixed bug: body of DO-SYMBOLS may contain declarations
2814 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2815 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2816 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2817 symbol macro only once
2818 * fixed printing of call frame when argument list is unavailable
2819 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2820 * compiler no longer signals WARNING on unknown keyword
2823 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2824 * A beta-quality port to the mips architecture running Linux,
2825 based on the old CMUCL backend, has been made. It has been tested
2826 on a big-endian kernel, and works sufficiently well to be able to
2827 rebuild itself; it has not been tested in little-endian mode.
2828 * fixed an inconsistency between gencgc.c and purify.c which made
2829 dumping/loading .core files unreliable
2830 * fixed bug 120a: The compiler now deals correctly with IFs where
2831 the consequent is the same as the alternative, instead of
2832 misderiving the return type. (thanks to Alexey Dejneka)
2833 * fixed bug 113: Logical pathnames are now dumpable (the logical
2834 host is resolved at load-time, throwing an error if it is not
2836 * fixed bug 174: FORMAT's error message is slightly clearer when a
2837 non-printing character is used in a format directive.
2838 * fixed several bugs in compiler checking of type declarations, i.e.
2839 violations of the Python "declarations are assertions" principle
2840 (thanks to Alexey Dejneka)
2841 * fixed several bugs in PCL's error checking (thanks to Gerd
2843 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2845 * fixed bug in compilation of functions as first class values
2846 (thanks to Antonio Martinez-Shotton)
2847 * The compiler's handling TYPE-ERRORs which it can prove will
2848 inevitably happen at runtime has been cleaned up and corrected
2849 in several ways. (thanks to Alexey Dejneka)
2850 * improved argument type checking for various basic arithmetic
2851 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2852 lavished on them in the past that they can be compiled in many
2853 ways in different special cases
2854 * fixed bug 181: compiler checks validity of user supplied type
2856 * cleaned up code flushing in optimization: Function calls which
2857 should signal errors for safety purposes (e.g. which ANSI says
2858 should signal errors when their arguments are of incorrect type)
2859 are no longer optimized away.
2860 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2861 * incremented fasl file version number, because changes in the
2862 implementation of sequence functions like COERCE caused
2863 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2864 in old inline expansions) to become undefined. (Actually these
2865 changes were later undone, so we might very well be binary
2866 compatible with 0.7.7 after all, but leaving the version number
2867 incremented seemed like the simplest and most conservative
2870 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2871 * An alpha-quality port to the parisc architecture running Linux,
2872 based on the old CMUCL backend, has been made. This, even more so
2873 than the other backends, should be considered still a work in
2874 progress; known problems include that the Linux kernel in 64-bit
2875 mode does not propagate the correct sigcontext structure to
2876 userspace, and consequently SBCL on a parisc64 kernel will not
2878 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2879 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2880 suppressed.) Also now that the compiler is looking at declarations
2881 in the environment, it checks optimization declarations as well,
2882 and suppresses inlining when (> DEBUG SPEED).
2883 * More fixes have been made to treatment of floating point exception
2884 treatment and other Unix signals. In particular, floating point
2885 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2886 * The detection and handling of control stack exhaustion (infinite
2887 or very deeply nested recursion) has changed. Stack exhaustion
2888 detection is now done by write-protecting pages at the OS level
2889 and applies at all optimization settings; when found, a
2890 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2891 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2892 be caught using IGNORE-ERRORS.
2893 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2894 correctly when transforming recursive LABELS functions to LETs.
2895 (thanks to Alexey Dejneka)
2896 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2897 that are names of constants or global variables.
2898 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2899 alien routines with docstrings.
2900 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2901 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2903 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2904 (thanks to Eric Marsden)
2905 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2906 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2907 * Bug fix: The SPARC backend can now compile functions involving
2908 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2909 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2910 to a functions expecting a PATHNAME-DESIGNATOR.
2911 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2912 lambda lists. (thanks to Alexey Dejneka)
2913 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2914 functions so that EXPORTing the name of the class doesn't cause
2915 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2916 to Antonio Martinez for reporting this)
2917 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2918 constant-folded without failing an assertion. (thanks to Einar
2919 Floystad Dorum for reporting this)
2920 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2921 types are now dealt with more correctly by the compiler.
2922 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2923 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2924 behaviour analogous to RENAME-FILE. This puts its behaviour more
2925 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2927 * The fasl file version number has changed again. (because of the
2928 bug fix involving the names of PCL MAKE-INSTANCE functions)
2930 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2931 * bug fix: Floating point exceptions are treated much more
2932 consistently on the x86/Linux and PPC/Linux platforms.
2933 * Array initialization with :INITIAL-ELEMENT is now much faster for
2934 cases when the compiler cannot open code the array creation, but
2935 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2936 array accesses have also seen a speed increase.
2937 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2938 specified. (This was at the root of some bad interactions between
2939 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2941 * bug fix: Internal error arguments for undefined functions are now
2942 computed correctly on the PPC/Linux platform.
2943 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2944 Raymond Toy's patch for CMU CL)
2945 * Support for the Solaris 9 operating environment has been included
2946 (thanks to Daniel Merritt)
2947 * A very ugly but hopefully complete draft of the missing FFI chapter
2948 of the manual has been created by reformatting the corresponding
2949 CMU CL manual chapter into (currently very ugly and incoherent)
2950 DocBook and bringing it up to date for SBCL behavior. Thus, the
2951 manual is now essentially complete, at least by my extreme
2952 once-and-only-once standards, whereby it's acceptable to refer to
2953 the doc strings of SB-EXT functions as the primary documentation.
2954 * The fasl file version number has changed again, due to cleanup of
2955 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2956 is no longer a static symbol.)
2958 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2959 * SBCL now builds with OpenMCL (version 0.12) as the
2960 cross-compilation host; also, more progress has been made toward
2961 bootstrapping under CLISP.
2962 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2964 * bug 158 fixed: The compiler can now deal with integer loop
2965 increments different from 1; fixing this turned out also to fix
2967 * bug 169 fixed: no more bogus warnings about using lexical bindings
2968 despite the presence of perfectly good SPECIAL declarations (thanks
2969 to David Lichteblau)
2970 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2971 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2972 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2974 * bug 180 fixed: Method combination specifications no longer ignore
2975 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2976 * bug fix: Structure type predicate functions now check their argument
2977 count as they should.
2978 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2979 correctly. (thanks to Pierre Mai)
2980 * minor incompatible change: The --noprogrammer option is deprecated
2981 in favor of the new --disable-debugger option, which is very similar.
2982 (The major difference is that it takes effect at a slightly different
2983 time at startup, causing handling of errors in --sysinit and
2984 --userinit files will be affected differently.) The
2985 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2986 been added to allow this functionality to be controlled from ordinary
2987 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2988 maintainers, who might want to run non-interactive scripts to
2989 build SBCL cores which will later be used interactively.)
2990 * minor incompatible change: The LOAD function no longer, when given
2991 a wild pathname to load, loads all files matching that pathname.
2992 Instead, an error of type FILE-ERROR is signalled.
2994 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2995 * bug 147 fixed: The compiler preserves its block link/count
2996 invariants more correctly now so that it doesn't crash. (thanks
2998 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3000 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3001 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3002 no-value-for-this-character as NIL (as specified by ANSI).
3003 * HOST-NAMESTRING on physical pathnames now returns a string that is
3004 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3005 (thanks to Christophe Rhodes)
3006 * The Alpha port handles icache flushing more correctly. (thanks to
3008 * More progress has been made toward bootstrapping under CLISP. (thanks
3009 to Christophe Rhodes)
3010 * The fasl file format has changed again, because dynamic loading
3011 on OpenBSD (which has non-ELF object files) motivated some cleanups
3012 in the way that foreign symbols are transformed and passed around.
3013 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3014 is no longer treated as whitespace by the reader, but instead as
3015 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3016 |A
\7fB|, instead of A as it used to.
3018 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3019 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3020 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3021 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3022 this as of 0.7.1.45, but was left out of the previous news section
3023 (thanks to Dan Barlow)
3024 * SBCL now runs on the Solaris operating system on SPARC architectures
3025 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3026 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3027 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3028 * SPARC backend cleanups, allowing builds of cores optimized for V8
3029 and V9 SPARCS, and also emission of code targeted to a particular
3030 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3032 * SBCL is closer to bootstrapping under CLISP, thanks to various
3033 fixes by Christophe Rhodes.
3034 * The fasl file format has changed again, to allow the compiler's
3035 INFO database to support symbol macros.
3036 * The user manual (in doc/) is formatted into HTML more nicely.
3037 (thanks to coreythomas)
3038 * The system is smarter about SUBTYPEP relationships, especially
3039 those involving NOT types (including types such as ATOM which are
3040 represented internally using NOT types). Thus SUBTYPEP is less
3041 likely to return (VALUES NIL NIL) in general, and in particular
3042 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3044 * The fasl file format has changed again, because the internal
3045 representation of types now includes a new slot to support the new
3046 SUBTYPEP-of-NOT-types logic.
3047 * (not a change in the main branch of SBCL, but a related prototype
3048 which can hopefully be merged into the main branch of SBCL in the
3049 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3050 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3051 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3052 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3053 dispatch macro character combinations. (thanks to Alexey Dejneka)
3054 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3055 that superficially look like logical namestrings correctly.
3056 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3058 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3059 default supplied-p) for &optional and &key arguments. (thanks to
3062 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3063 * incompatible change: The compiler is now less aggressive about
3064 tail call optimization, doing it only when (> SPACE DEBUG) or
3065 (> SPEED DEBUG). (This is an incompatible change because there are
3066 programs which relied on the old CMU-CL-style behavior to optimize
3067 away their unbounded recursion which will now die of stack overflow.)
3068 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3069 for non-GENCGC systems has been increased to 20M (since that
3070 seems much closer to the likely performance optimum for modern
3071 systems than the old 4M value was)
3072 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3073 and *DEBUG-PRINT-LEVEL*
3074 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3075 of CMU CL's support for SPARC, and various endianness and other
3076 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3077 * new syntactic sugar for the Unix command line: --load foo.bar is now
3078 an alternate notation for --eval '(load "foo.bar")'.
3080 ** The system now detects stack overflow and handles it gracefully,
3081 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3082 optimization settings. (This is a good thing in general, and
3083 its introduction in this version should be particularly timely
3084 for anyone whose code fails because of suppression of tail
3086 ** The system now hunts for the C variable "environ" in a more
3087 devious way, to avoid segfaults when the C library version differs
3088 between compile time and run time. (thanks to Christophe Rhodes)
3089 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3090 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3091 ** The compiler no longer issues bogus style warnings for undefined
3092 classes in the same source file as the DEFCLASSes which defined
3093 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3095 ** fixes in CONDITION class precedence list for undefined function
3096 errors (thanks to Alexei Dejneka)
3097 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3098 correctly. (thanks to Dan Barlow)
3099 ** portability fixes aiming at bootstrapping under CLISP (thanks
3100 to Dave McDonald and Christophe Rhodes)
3101 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3102 ** fixes in type translation and and type inference (thanks to
3104 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3105 ** various fixes in the new ports (thanks to Dan Barlow)
3106 * several changes related to debugging:
3107 ** suppression of tail recursion, as noted above
3108 ** stack overflow detection, as noted above
3109 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3110 is now the default. (For some time encapsulation has been more
3111 reliable than the breakpoint-based :ENCAPSULATE NIL
3112 implementation, at least on X86 systems; and I just noticed that
3113 encapsulation also seems closer to the spirit of the ANSI
3116 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3118 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3119 up properly again. (There was a packaging bug in 0.7.0 which
3120 left their definitions in SB-SYS::LOAD-FOREIGN and
3121 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3122 vital for most things which interface to C-level interfaces,
3123 like extensions working with sockets or databases or
3124 Perl-compatible regexes or whatever, and the need to fix
3125 this bug is the main reason that 0.7.1 was released so
3127 ** DEFGENERIC is now choosier about the methods it redefines, so that
3128 reLOADing a previously-LOADed file containing DEFGENERICs does
3129 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3130 cycle now works as it should. (thanks to Alexey Dejneka)
3131 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3132 fixed by Christophe Rhodes. (He actually submitted this patch
3133 months ago, and I delayed until after 0.7.0.)
3134 ** Bug 111 (internal compiler confusion about runtime checks on
3135 FUNCTION types) was fixed by Alexey Dejneka.
3136 * Some internal cleanups (getting rid of variables which aren't
3137 needed now that the byte interpreter is gone) caused the fasl
3138 file format number to change again.
3140 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3141 * major incompatible change: The default fasl file extension, i.e. the
3142 default extension for files produced by COMPILE-FILE, has changed
3143 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3145 ** There are many changes in the implementation of the compiler.
3146 SBCL is now essentially a compiler-only implementation of ANSI
3147 Common Lisp. EVAL still "interprets" a few special cases, but
3148 almost all the interesting cases are handled by creating
3149 a LAMBDA expression, calling COMPILE on it, then calling
3150 FUNCALL on the result.
3151 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3152 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3153 Since the code is newer, there might still be some new bugs
3154 (though not as many as before Martin Atzmueller's fixes:-). But
3155 the new code is substantially simpler and clearer, and hopefully
3156 any remaining bugs will be simpler, less fundamental, and more
3157 fixable then the bugs in the old code.
3158 ** The revised compiler is still a little unsteady on its feet.
3160 *** The debugging information it produces (particularly the names
3161 of FUNCTION objects) is sometimes much less useful than what
3162 the old compiler produced.
3163 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3164 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3165 within a MACROLET) has been temporarily weakened.
3166 ** There are new compiler optimizations for various functions:
3167 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3168 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3169 *** the math functions TRUNCATE, FLOOR, and CEILING
3170 *** the function-of-all-trades COERCE
3171 Mostly these should be transparent, but there's one
3172 potentially-annoying problem (bug 117): when the compiler
3173 inline-expands a function and does type analysis on the result,
3174 it can create control paths which have type mismatches, and
3175 when it can't prove that those control paths aren't taken,
3176 it will issue WARNINGs about the type mismatches. This is
3177 a particular problem in practice for the new sequence functions.
3178 It's not clear how this should be fixed, and for now, a
3179 workaround is given in the entry for 117 in the BUGS file.
3180 ** (Because of the interaction between the two previous items --
3181 occasional inlining problems and new inline expansions -- some
3182 of the new sequence function optimizations won't really kick in
3183 completely until debugging information, and then inlining, are
3184 straightened out in some future version.)
3185 * minor incompatible changes:
3186 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3187 DIRECTORY no longer implicitly promotes NIL slots of its
3188 pathname argument to :WILD. In particular, when you ask for the
3189 contents of a directory (which you used to be able to do without
3190 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3191 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3192 ** changes in behavior that ANSI explicitly defines to be
3193 implementation dependent:
3194 *** The new compiler-only implementation still conforms with ANSI,
3195 but acts a little different than before. Besides the obvious
3196 changes in performance tradeoffs (that the cost per form passed
3197 to EVAL has gone up, and the cost per form executed by EVAL
3198 has gone down), the behavior of the system changes a little
3199 because there are no longer any interpreted function objects.
3200 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3201 e.g. doing COMPILE on the output of interactive DEFUN is
3203 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3205 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3206 has changed from (:CL) to NIL.
3207 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3208 e.g. #\Newline and #\Tab, don't have names specified in the
3209 ANSI Common Lisp standard, is now based on their ASCII symbolic
3210 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3211 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3212 are no longer used for output.
3213 ** changes in internal implementation constants:
3214 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3215 4 million. (If your application spends a lot of time GCing and
3216 you have a lot of RAM, you might want to experiment with
3217 increasing it even more.)
3218 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3219 However, almost all old code should still continue to work without
3220 immediate update, as SB-C-CALL is now a (deprecated) nickname
3222 ** Old operator names in the style DEF-FOO are now deprecated in
3223 favor of new corresponding names DEFINE-FOO, for consistency with
3224 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3225 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3226 internal symbols, but a few supported extensions like
3227 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3228 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3229 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3230 etc. as you get deeper into recursive calls to the debugger
3231 command loop, instead of the old "5]", "5]]", "5]]]"
3232 sequence. (I was motivated to do this when squabbles between
3233 ILISP and SBCL left me very deeply nested in the debugger. In the
3234 short term, this change will probably provoke more ILISP/SBCL
3235 squabbles, but hopefully it will be an improvement in the long run.)
3236 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3237 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3238 function, since declaiming return types involving aliens is
3239 (1) annoyingly messy to do by hand and (2) vital to efficient
3240 compilation of code which calls such functions.
3241 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3242 longer reexported by the SB-EXT package. They're solely useful
3243 for alien code, so it seems more logical that you should get
3244 them from the SB-ALIEN package, not in SB-EXT.
3245 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3246 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3247 features. Instead, the code that they used to control is always
3248 built into the system.
3249 * many other bug fixes
3250 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3251 advantage of the new EVAL-WHEN stuff and to clean them up in
3252 general, and they are now more ANSI-compliant in a number of
3253 ways. Martin Atzmueller is responsible for a lot of this.
3254 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3256 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3257 *** correct ERROR type for various file operations
3258 *** some fixes for Lisp streams
3259 *** DEFMETHOD syntax checking
3260 *** changing old weird representation of debug information as
3261 strings (which, among their other deficiencies, don't transform
3262 correctly when you rename packages, and don't change their
3263 print representation when you change things like *PACKAGE*
3264 and *PRINT-LENGTH*) to symbols and lists of symbols
3265 He also made several improvements and fixed several bugs in DESCRIBE.
3266 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3268 *** misbehavior of WRITE-STRING/WRITE-LINE
3269 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3270 and several other LOOP problems as well
3271 *** DIRECTORY when similar filenames are present
3272 *** DEFGENERIC with :METHOD options
3273 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3274 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3275 *** argument ordering in FIND with :TEST option
3276 *** mishandled package designator argument in APROPOS-LIST
3277 *** various problems in the backquote readmacro
3278 *** a bug in APROPOS
3279 *** probably some others that I'm not describing very well here,
3280 since the CVS log documents them by reference to sbcl-devel
3281 messages, and the SourceForge archives aren't working well.:-(
3282 ** Dan Barlow improved the Alpha port (and is making progress on the
3283 PPC port, for those of you who think different).
3284 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3285 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3286 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3287 continues to work on the SPARC port (for those of you in a position
3288 to look down upon our little PC-compatible boxes from a great height).
3289 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3290 and uses that copy, rather than the current dynamic value, when
3291 it's trying to decide whether to truncate output. Thus e.g.
3292 (let ((*print-lines* 50))
3293 (pprint-logical-block (stream nil)
3295 (let ((*print-lines* 8))
3296 (print (aref possiblybigthings i) stream)))))
3297 should now truncate the logical block only at 50 lines, instead of
3298 often truncating it at 8 lines, as it did before.
3299 * The doc/cmucl/ directory, containing old CMU CL documentation
3300 from the time of the fork, is no longer part of the base system.
3301 SourceForge has shut down its anonymous FTP service, and with it
3302 my original plan for distributing the old CMU CL documentation
3303 there. For now, if you need these files you can download an old
3304 SBCL source release and extract them from it.
3305 * The fasl file version number changed again, for dozens of reasons,
3306 some of which are apparent above.
3308 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3309 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3310 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3311 patch, so that DISASSEMBLE output is much nicer.
3312 * The code in the SB-PROFILE package now seems reasonably stable.
3313 I still haven't decided what the final interface should look like
3314 (I'd like PROFILE to interact cleanly with TRACE, since both
3315 facilities use function encapsulation) but if you have a need
3316 for profiling now, you can probably use it successfully with
3317 the current CMU-CL-style interface.
3318 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3319 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3320 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3321 link now returns the dangling link itself, and for similar
3322 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3323 link itself. (In these cases the old code signalled an error and
3324 looped endlessly, respectively.) Thus, DIRECTORY now works even
3325 in the presence of dangling and cyclic symbolic links.
3326 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3327 is now a supported extension again, since the consensus on
3328 sbcl-devel was that it can be useful for ordinary development
3329 work, not just for debugging SBCL itself.
3330 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3331 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3332 that currently-defined functions might be redefined later with
3333 different return types.
3334 * Hash tables can be printed readably, as inspired by CMU CL code
3335 of Eric Marsden and SBCL code of Martin Atzmueller.
3336 * better error handling in CLOS method combination, thanks to
3337 Martin Atzmueller porting Pierre Mai's CMU CL patches
3338 * more overflow fixes for >16Mbyte I/O buffers
3339 * A bug in READ has been fixed, so that now a single Ctrl-D
3340 character suffices to cause end-of-file on character streams.
3341 In particular, now you only need one Ctrl-D at the command
3342 line (not two) to exit SBCL.
3343 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3345 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3346 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3347 does the right thing.
3348 * The implementation of some type tests, especially for CONDITION
3349 types, is now tidier and maybe faster, due to CMU CL code
3350 originally by Douglas Crosher, ported by Martin Atzmueller.
3351 * Some math functions have been fixed, and there are new
3352 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3353 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3354 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3355 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3356 likely to be built into sbcl-0.7.0.)
3357 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3358 CL, ported to SBCL by Martin Atzmueller)
3359 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3360 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3361 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3362 * There's a new slam.sh hack to shorten the edit/compile/debug
3363 cycle for low-level changes to SBCL itself, and a new
3364 :SB-AFTER-XC-CORE target feature to control the generation of
3365 the after-xc.core file needed by slam.sh.
3366 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3367 COMPILE-FILE is no longer supported, so that now every function
3368 gets an entry point, so that block compilation looks a little
3369 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3370 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3371 returns the number of bytes consed since the system started,
3372 rather than the number consed since the first time the function
3373 was called. (The new definition parallels ANSI functions like
3374 CL:GET-INTERNAL-RUN-TIME.)
3375 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3376 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3377 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3378 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3379 * Fasl file version numbers are now independent of the target CPU,
3380 since historically most system changes which required version
3381 number changes have affected all CPUs equally. Similarly,
3382 the byte fasl file version is now equal to the ordinary
3385 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3386 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3387 is no longer recognized. I apologize for this, because it was
3388 listed in SB-EXT as a supported extension, but I found that
3389 its existing behavior was poorly specified, as well as incorrectly
3390 specified, and it looked like too much of a mess to straighten it
3391 out. I have enough on my hands trying to get ANSI stuff to work..
3392 * many patches ported from CMU CL by Martin Atzmueller, with
3393 half a dozen bug fixes in pretty-printing and the debugger, and
3394 half a dozen others elsewhere
3395 * fixed bug 13: Floating point infinities are now supported again.
3396 They might still be a little bit flaky, but thanks to bug reports
3397 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3398 as flaky as they were.
3399 * The --noprogrammer command line option is now supported. (Its
3400 behavior is slightly different in detail from what the old man
3401 page claimed it would do, but it's still appropriate under the
3402 same circumstances that the man page talks about.)
3403 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3404 are now supported, and enabled by default. Thus, the compiler can
3405 handle many floating point and complex operations much less
3406 inefficiently. (Thus e.g. you can implement a complex FFT
3408 * The compiler now detects type mismatches between DECLAIM FTYPE
3409 and DEFUN better, and implements CHECK-TYPE more correctly, and
3410 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3411 thanks to patches from Martin Atzmueller.
3412 * various fixes to make the cross-compiler more portable to
3413 ANSI-conforming-but-different cross-compilation hosts (notably
3414 Lispworks for Windows, following bug reports from Arthur Lemmens)
3415 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3416 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3417 fixed thanks to Pierre Mai's CMU CL patches.
3418 * fixes to keep the system from overflowing internal counters when
3419 it tries to use i/o buffers larger than 16M bytes
3420 * fixed bug 45a: Various internal functions required to support
3421 complex special functions have been merged from CMU CL sources.
3422 (When I was first setting up SBCL, I misunderstood a compile-time
3423 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3424 * improved support for type intersection and union, fixing bug 12
3425 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3426 more obscure bugs as well
3427 * some steps toward byte-compiling non-performance-critical
3428 parts of the system, courtesy of patches from Martin Atzmueller
3429 * Christophe Rhodes has made some debian packages of sbcl at
3430 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3431 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3432 stable, but are nonetheless usable. When he's ready, I'd be happy
3433 to add them to the SourceForge "File Releases" section. (And if
3434 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3435 * new fasl file format version number (because of changes in
3436 internal representation of (OR ..) types to accommodate the new
3437 support for (AND ..) types, among other things)
3439 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3440 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3442 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3444 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3445 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3446 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3447 * DESCRIBE now works on structure objects again.
3448 * Most function call argument type mismatches are now handled as
3449 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3450 know whether the function will be redefined before the call is
3451 executed. (The compiler could flag local calls with full WARNINGs,
3452 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3453 it doesn't keep track of enough information to know whether calls
3454 are local in this sense.)
3455 * Compiler output is now more verbose, with messages truncated
3456 later than before. (There should be some supported way for users
3457 to override the default verbosity, but I haven't decided how to
3458 provide it yet, so this behavior is still controlled by the internal
3459 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3460 src/compiler/ir1util.lisp.)
3461 * Fasl file format version numbers have increased again, because
3462 support for the Gray streams extension changes the layout of the
3463 system's STREAM objects.
3464 * The Gray subclassable streams extension now works, thanks to a
3465 patch from Martin Atzmueller.
3466 * The full LOAD-FOREIGN extension (not just the primitive
3467 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3468 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3469 but like most other programs, it defaults to copying the Unix
3470 environment from the original process instead of starting the
3471 new process in an empty environment.
3472 * Extensions which manipulate the Unix environment now support
3473 an :ENVIRONMENT keyword option which doesn't smash case or
3474 do other bad things. The CMU-CL-style :ENV option is retained
3475 for porting convenience.
3476 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3477 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3479 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3481 * A patch from Martin Atzmueller seems to have solved the SIGINT
3482 problem, and as far as we know, signal-handling now works cleanly.
3483 (If you find any new bugs, please report them!)
3484 * The system no longer defaults Lisp source file names to types
3485 ".l", ".cl", or ".lsp", but only to ".lisp".
3486 * The compiler no longer uses special default file extensions for
3487 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3488 seems to expect a single default extension for all compiled code,
3489 and there's no compelling reason to try to stretch the standard
3490 to allow two different extensions.) Instead, byte-compiled files
3491 default to the same extension as native-compiled files.
3492 * Fasl file format version numbers have increased again, because
3493 a rearrangement of internal implementation packages made some
3494 dumped symbols in old fasl files unreadable in new cores.
3495 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3496 many fewer weird special cases.
3497 * Bug #17 (differing COMPILE-FILE behavior between logical and
3498 physical pathnames) has been fixed, and some related misbehavior too,
3499 thanks to a patch from Martin Atzmueller.
3500 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3501 by Tim Moore, ported to SBCL by Martin Atzmueller.
3502 * Martin Atzmueller fixed several filesystem-related problems,
3503 including bug #36, in part by porting CMU CL patches, which were
3504 written in part by Paul Werkowski.
3505 * More compiler warnings in src/runtime/ are gone, thanks to
3506 more patches from Martin Atzmueller.
3507 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3510 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3512 * DESCRIBE now works on CONDITION objects.
3513 * The debugger now handles errors which arise when trying to print
3514 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3516 * The build system now uses an additional file, customize-target-features.lisp,
3517 to allow local modifications to the target *FEATURES* list. (The point of
3518 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3519 debugging features enabled, without having to worry about propagating it
3520 into everyone's system when I do a "cvs update".) When no
3521 customize-target-features.lisp file exists, the target *FEATURES* list
3522 should be constructed the same way as before.
3523 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3524 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3525 warn about behavior which is undefined under the ANSI spec. Note: This
3526 is specified by ANSI, but it's not very popular with programmers.
3527 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3528 macro in the SBCL sources for an example of a workaround which you
3529 might use to make portable ANSI-standard code which does what you want.
3530 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3531 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3532 when it's used as a non-toplevel form. (This is required in order
3533 to implement the DEFCONSTANT-EQX macro.)
3534 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3535 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3536 funny things, due to bugs in the implementation of EVAL-WHEN
3537 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3538 non-toplevel DEFCONSTANTs are uncommon.)
3539 * The core file version number and fasl file version number have been
3540 incremented, because the old noncompliant DEFCONSTANT behavior involved
3541 calling functions which no longer exist, and because I also took the
3542 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3543 * fixed bug 1 (error handling before read-eval-print loop starts), and
3544 redid debugger restarts and related debugger commands somewhat while
3546 ** The QUIT debugger command is gone, since it did something
3547 rather different than the SB-EXT:QUIT command, and since it never
3548 worked properly outside the main toplevel read/eval/print loop.
3549 Invoking the new TOPLEVEL restart provides the same functionality.
3550 ** The GO debugger command is also gone, since you can just invoke
3551 the CONTINUE restart directly instead.
3552 ** The TOP debugger command is also gone, since it's redundant with the
3553 FRAME 0 command, and since it interfered with abbreviations for the
3555 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3557 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3558 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3559 some porting work by Martin Atzmueller)
3560 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3561 with a boatload of patches which he ported to SBCL. Now that those
3563 ** The system tries to make sure that its low-priority messages
3564 are prefixed by semicolons, to help people who like to use
3565 syntax highlighting in their ILISP buffer. (This patch
3566 was originally due to Raymond Toy.)
3567 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3568 patches originally written by Raymond Toy.
3569 ** The compiler understands coercion between single-value and
3570 multiple-VALUES type expressions better, getting rid of some very
3571 weird behavior, thanks to patches originally by Robert MacLachlan
3572 and Douglas Crosher.
3573 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3574 lambda lists, thanks to a patch originally by Pierre Mai.
3575 ** The system no longer bogusly warns about "abbreviated type
3577 ** The compiler gets less confused by inlining and RETURN-FROM,
3578 thanks to some patches originally by Tim Moore.
3579 ** The system no longer hangs when dumping circular lists to fasl
3580 files, thanks to a patch originally from Douglas Crosher.
3581 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3582 undefined function error.
3583 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3584 in structure slot initforms) for now, documented workaround instead:-|
3585 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3586 * fixed bug 5: added stubs for various Gray stream functions called
3587 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3588 installed, at least appropriate type errors are generated
3589 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3590 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3591 consistently in DEFMETHOD forms.
3592 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3593 it doesn't seem to affect SBCL after all
3594 * The C runtime system now builds with better optimization and many
3595 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3597 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3599 * The system is now under CVS at SourceForge (instead of the
3600 CVS repository on my home machine).
3601 * The new signal handling code has been tweaked to treat register
3602 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3603 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3604 downstream, e.g. in debug-int.lisp, has implicit dependencies
3605 on the unsignedness of integer representation of machine words,
3606 and that caused the system to bomb out with infinite regress
3607 when trying to recover from type errors involving signed values,
3608 e.g. (BUTLAST '(1 2 3) -1).)
3609 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3610 (This was one of the bugs Peter Van Eynde reported back in July.)
3611 * The system now uses code inspired by Colin Walters' O(N)
3612 implementation of MAP (from the cmucl-imp@cons.org mailing
3613 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3614 inline the MAP operation, and there is more than one
3615 sequence argument to the MAP call (so that it can't just
3616 do ETYPECASE once and for all based on the type of the
3617 single sequence argument). (The old non-inline implementation
3618 of the general M-argument sequence-of-length-N case required
3619 O(M*N*N) time when any of the sequence arguments were LISTs.)
3620 * The QUIT :UNIX-CODE keyword argument has been renamed to
3621 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3622 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3624 * Raymond Wiker's patches to port dynamic loading from Linux to
3625 FreeBSD have been added.
3626 * The BUGS file is now more nearly up to date, thanks in large part
3627 to Martin Atzmueller's review of it.
3628 * The debugger now flushes standard output streams before it begins
3629 its output ("debugger invoked" and so forth).
3630 * The core version number and fasl file version number have both
3631 been incremented, because of incompatible changes in the layout
3633 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3634 used to not be called for a saved Lisp image.)
3635 * Martin Atzmueller's version of a patch to fix a compiler crash,
3636 as posted on sbcl-devel 13 September 2000, has been installed.
3637 * Instead of installing Martin Atzmueller's patch for the
3638 compiler transform for SUBSEQ, I deleted the compiler transform,
3639 and transforms for some similar consing operations.
3640 * A bug in signal handling which kept TRACE from working on OpenBSD
3642 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3643 away by constant folding
3644 * The system now defines its address space constants in one place
3645 (in the Lisp sources), and propagates them automatically elsewhere
3646 (through GENESIS and the sbcl.h file). Therefore, patching the
3647 address map is less unnecessarily tedious and error-prone. The
3648 Lisp names of address space constants have also been systematized.
3649 * CVS tags like dollar-Header-dollar have been removed from
3650 the sources, because they have never saved me trouble and
3651 they've been source of trouble working with patches and other
3652 diff-related operations.
3653 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3654 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3656 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3658 * The system has been ported to OpenBSD.
3659 * The system now compiles with a simple "sh make.sh" on the systems
3660 that it's supported on. I.e., now you no longer need to tweak
3661 text in the target-features.lisp-expr and symlinks in src/runtime/
3662 by hand, the make.sh takes care of it for you.
3663 * The system is no longer so grossly inefficient when compiling code
3664 involving vectors implemented as general (not simple) vectors (VECTOR T),
3665 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3666 which dares to use the various sequence functions on non-simple
3667 vectors, takes less of a performance hit.
3668 * There is now a primitive type predicate VECTOR-T-P
3669 to test for the (VECTOR T) type, so that e.g.
3670 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3671 can now be compiled with some semblance of efficiency. (The old code
3672 turned the type declaration into a full call to %TYPEP at runtime!)
3673 * AREF on (VECTOR T) is still not fast, since it's still compiled
3674 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3675 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3676 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3677 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3678 without making full calls to SUBTYPEP at runtime.
3679 (Some analogous efficiency issues for non-simple vectors specialized to
3680 element types other than T, or for non-simple multidimensional arrays,
3681 have not been addressed. They could almost certainly be handled the
3682 same way if anyone is motivated to do so.)
3683 * The changes in array handling break binary compatibility, so
3684 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3685 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3686 instead of (VALUES T T).
3687 * By following the instructions that Dan Barlow posted to sbcl-devel
3688 on 2 July 2000, I was able to enable primitive dynamic object
3689 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3690 functionality is not implemented (since it calls ld to resolve
3691 library references automatically, requiring RUN-PROGRAM for its
3692 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3693 try to resolve library references) is now supported.
3694 * The system now flushes the standard output streams when it terminates,
3695 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3696 them at several other probably-convenient times, e.g. in each pass of
3697 the toplevel read-eval-print loop, and after evaluating a form given
3698 as an "--eval" command-line option. (These changes were motivated by a
3699 discussion of stream flushing issues on cmucl-imp in August 2000.)
3700 * The source transform for TYPEP of array types no longer assumes
3701 that an array whose element type is a not-yet-defined type
3702 is implemented as an array of T, but instead punts, so that the
3703 type will be interpreted at runtime.
3704 * There is now some support for cross-compiling in make.sh: each of
3705 the phases of make.sh has its own script. (This should be transparent
3706 to people doing ordinary, non-cross-compile builds.)
3707 * Since my laptop doesn't have hundreds of megabytes of memory like
3708 my desktop machine, I became more motivated to do some items on
3709 my to-do list in order to reduce the size of the system a little:
3710 ** Arrange for various needed-only-at-cold-init things to be
3711 uninterned after cold init. To support this, those things have
3712 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3713 symbols with such names are now uninterned after cold init).
3714 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3715 fasl files for cold load.
3716 ** Remove the old compiler structure pooling code (which used to
3717 be conditional on the target feature :SB-ALLOC) completely.
3718 ** Redo the representation of some data in cold init to be more compact.
3719 (I also looked into supporting byte compiled code at bootstrap time,
3720 which would probably reduce the size of the system a lot, but that
3721 looked too complicated, so I punted for now.)
3722 * The maximum signal nesting depth in the src/runtime/ support code has
3723 been reduced from 4096 to 256. (I don't know any reason for the very
3724 large old value. If the new smaller value turns out to break something,
3725 I'll probably just bump it back up.)
3726 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3728 * Many, many bugs reported by Peter Van Eynde have been added to
3729 the BUGS list; some have even been fixed.
3730 * While enabling dynamic object file loading, I tried to make the
3731 code easier to understand, renaming various functions and variables
3732 with less ambiguous names, and changing some function calling
3733 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3734 * While trying to figure out how to do the OpenBSD port, I tried to
3735 clean up some of the code in src/runtime/. In particular, I dropped
3736 support for non-POSIX signal handling, added various comments,
3737 tweaked the code to reduce the number of compilation warnings, and
3738 renamed some files to increase consistency.
3739 * To support the new automatic configuration functionality in make.sh,
3740 the source file target-features.lisp-expr has been replaced with the
3741 source file base-target-features.lisp-expr and the machine-generated
3742 file local-target-features.lisp-expr.
3743 * fixed a stupid quoting error in make.sh so that using CMU CL
3744 "lisp -batch" as cross-compilation host works again
3746 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3748 * DESCRIBE no longer tries to call itself recursively to describe
3749 bound/fbound values, so that it no longer fails on symbols which are
3750 bound to themselves (like keywords, T, and NIL).
3751 * DESCRIBE now works on generic functions.
3752 * The printer now prints less-screwed-up representations of closures
3753 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3754 * A private symbol is used instead of the :EMPTY keyword previously
3755 used to mark empty slots in hash tables. Thus
3756 (DEFVAR *HT* (MAKE-HASH-TABLE))
3757 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3758 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3759 now does what ANSI says that it should. (You can still get
3760 similar noncompliant behavior if bang on the hash table
3761 implementation with all the symbols you get back from
3762 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3763 This breaks binary compatibility, since tests for equality to
3764 :EMPTY are wired into things like the macroexpansion of
3765 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3767 * There's now a minimal placeholder implementation for CL:STEP,
3768 as required by ANSI.
3769 * An obscure bug in the interaction of the normal compiler, the byte
3770 compiler, inlining, and structure predicates has been patched
3771 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3772 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3774 * Missing ordinary arguments in a macro call are now detected even
3775 when the macro lambda list contains &KEY or &REST.
3776 * The debugger no longer complains about encountering the top of the
3777 stack when you type "FRAME 0" to explicitly instruct it to go to
3778 the top of the stack. And it now prints the frame you request even
3779 if it's the current frame (instead of saying "You are here.").
3780 * As specified by ANSI, the system now always prints keywords
3781 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3783 * The default initial SIZE of HASH-TABLEs is now smaller.
3784 * Type information from CLOS class dispatch is now propagated
3785 into DEFMETHOD bodies, so that e.g.
3786 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3788 is now basically equivalent to
3789 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3790 (DECLARE (TYPE SINGLE-FLOAT X))
3792 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3793 operation, without having to do run-time type dispatch.
3794 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3795 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3796 * Since I don't seem to be making big file reorganizations very often
3797 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3798 is overflowing my ability to conveniently back them up), I've finally
3799 checked the system into CVS. (The CVS repository is on my home system,
3800 not at SourceForge -- putting it on SourceForge might come later.)
3801 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3802 high-level GC-NOTIFY-FOO functions send their output. (There's
3803 still very little control of where low-level verbose GC functions
3804 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3805 less than it used to -- the GC-NOTIFY-FOO functions are now under
3806 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3807 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3808 in only one place in the source code, and propagates it automatically
3809 everywhere that it's needed. Thus e.g. when I bump the version from
3810 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3811 * The C source files now include boilerplate legalese and documentation
3812 at the head of each file (just as the Lisp source files already did).
3813 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3814 to his page will be replaced with a link to his new CLiki service.
3816 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3818 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3819 * The build process now looks for GNU make under the default name "gmake",
3820 instead of "make" as it used to. If GNU make is not available as "gmake"
3821 on your system, you can change this default behavior by setting the
3822 GNUMAKE environment variable.
3823 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3824 can build without error under CMU CL.
3826 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3828 * There is now a partial SBCL user manual (with some new text and some
3829 text cribbed from the CMU CL manual).
3830 * The beginnings of a profiler have been added (starting with the
3831 CMU CL profiler and simplifying and cleaning up). Eventually the
3832 main interface should be through the TRACE macro, but for now,
3833 it's still accessed through vaguely CMU-CL-style functions and macros
3834 exported from the package SB-PROFILE.
3835 * Some problems left over from porting CMU CL to the new
3836 cross-compilation bootstrap process have been cleaned up:
3837 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3838 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3839 part when getting rid of the compiler *BACKEND* stuff.)
3840 ** The value of *NULL-TYPE* was screwed up, because it was
3841 being initialized before the type system knew the final
3842 definition of the 'NULL type. This screwed up several key
3843 optimizations in the compiler, causing inefficiency in all sorts
3844 of places. (I found it because I wanted to understand why
3845 GET-INTERNAL-RUN-TIME was consing.)
3846 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3847 PROCLAIM FTYPE information. Unfortunately this broke binary
3848 compatibility again, since now the forms output by DEFGENERIC
3849 to refer to functions which didn't exist in 0.6.3.
3850 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3851 can use the new (as of 0.6.3) transform for SOME into MAP into
3853 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3854 values to (INTEGER 0 1000000), so that the time code will no longer
3855 occasionally get blown up by Linux returning 1000000 microseconds
3856 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3857 its output conform to the ANSI spec. (Alas, this makes its output
3858 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3859 * A full call to MAP NIL with a single sequence argument no longer conses.
3860 * fixes to problems pointed out by Martin Atzmueller:
3861 * The manual page no longer talks about multiprocessing as though
3862 it were currently supported.
3863 * The ILISP support patches have been removed from the distribution,
3864 because as of version 5.10.1, ILISP now supports SBCL without us
3865 having to maintain patches.
3866 * added a modified version of Raymond Toy's recent CMU CL patch for
3867 EQUALP comparison of HASH-TABLE
3869 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3871 * The system still can't cross-compile itself with
3872 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3873 entails), but at least it can compile more of itself that way
3874 than it used to be able to, and various buglets which were uncovered
3875 by trying to cross-compile itself that way have now been fixed.
3876 * This release breaks binary compatibility again. This time
3877 at least I've incremented the FASL file format version to 2, so that the
3878 problem can be detected reliably instead of just causing weird errors.
3879 * various new style warnings:
3880 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3881 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3882 ** using the lexical binding of a variable named in the *FOO* style
3883 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3884 as specified by ANSI.
3885 * *RANDOM-STATE* is no longer automatically initialized from
3886 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3887 default behavior of the system is to repeat its behavior every time
3888 it's run. If you'd like to change this behavior, you can always
3889 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3890 old convention there was no comparably easy way to get the system to
3891 repeat its behavior every time it was run.
3892 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3893 FTYPE declarations has been removed, in favor of their ANSI
3894 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3895 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3896 the types of their sequence arguments can be determined at compile time.
3897 This is done through a new open code expansion for MAP which eliminates
3898 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3899 argument types can be determined at compile time.
3900 * The optimizer now transforms COERCE into an identity operation when it
3901 can prove that the coerced object is already of the correct type. (This
3902 can be a win for machine generated code, including the output of other
3903 optimization transforms, such as the MAP transform above.)
3904 * Credit information has been moved from source file headers into CREDITS.
3905 * Source file headers have been made more standard.
3906 * The CASE macro now compiles without complaining even when it has
3909 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3911 * (Note that the way that the PCL macroexpansions were rewritten
3912 to accommodate the change in DEFGENERIC below breaks binary
3913 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3914 not run under sbcl-0.6.2. Once we get out of alpha releases,
3915 i.e. hit release 1.0.0, we'll probably try to maintain binary
3916 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3917 and sbcl-1.4.4. Until then, however, it might be fairly common
3918 for maintenance releases to break binary compatibility.)
3919 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3921 * The reporting of unhandled signals has been changed to print some
3922 explanatory text as well as the report form. (Previously only
3923 the report form was printed.)
3924 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3925 it defines, so that the compiler no longer issues undefined function
3926 warnings for compiled-but-not-yet-loaded generic functions.
3927 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3928 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3929 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3930 section of the ANSI spec are supported.
3931 * The "" nickname for the "KEYWORD" package has been removed.
3932 The reader still handles symbol tokens which begin with a package marker
3933 as keywords, but it doesn't expose its mechanism for doing so in the
3934 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3935 * The system now issues STYLE-WARNINGs for contradictory TYPE
3936 proclamations. (Warnings for contradictory FTYPE proclamations would
3937 be nice too, but those can't be done usefully unless the type system
3938 is made smarter about FUNCTION types.)
3939 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3940 systematized, so that "*target-*.lisp is supposed to exist only on the
3941 target and imply that there's a related file which exists on the
3942 host, and *host-*.lisp is supposed to exist only on the host and imply
3943 that there's a related file which exists on the target. This involves a
3944 lot of renaming. Hopefully the acute confusion caused by the renaming
3945 will be justified by the reduction in chronic confusion..
3946 ** runtime-type.lisp -> early-target-type.lisp
3947 ** target-type.lisp -> late-target-type.lisp
3948 ** early-host-format.lisp -> early-format.lisp
3949 ** late-host-format.lisp -> late-format.lisp
3950 ** host-error.lisp -> misc-error.lisp
3951 ** early-error.lisp -> early-target-error.lisp
3952 ** late-error.lisp -> late-target-error.lisp
3953 ** host-defboot.lisp -> early-defboot.lisp
3954 ** code/misc.lisp -> code/target-misc.lisp
3955 ** code/host-misc.lisp -> code/misc.lisp
3956 ** code/numbers.lisp -> code/target-numbers.lisp
3957 ** code/early-numbers.lisp -> numbers.lisp
3958 ** early-host-type.lisp -> early-type.lisp
3959 ** late-host-type.lisp -> late-type.lisp
3960 ** host-typep.lisp -> typep.lisp
3961 ** load.lisp -> target-load.lisp
3962 ** host-load.lisp -> load.lisp
3963 ** host-disassem.lisp -> disassem.lisp
3964 ** host-insts.lisp -> insts.lisp
3965 ** byte-comp.lisp -> target-byte-comp.lisp
3966 ** host-byte-comp.lisp -> byte-comp.lisp
3967 ** host-signal.lisp -> signal.lisp
3968 ** host-defstruct.lisp -> defstruct.lisp
3969 ** late-target-type.lisp -> deftypes-for-target.lisp
3970 Furthermore, several other previously target-only files foo.lisp (e.g.
3971 hash-table.lisp and random.lisp) have been split into a target-and-host
3972 foo.lisp file and a target-only target-foo.lisp file, with their key type
3973 definitions in the target-and-host part, so that the cross-compiler will
3974 know more about target types.
3975 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3976 gone away. In their place are various *BACKEND-FOO* variables
3977 corresponding to the slots of the old structure.
3978 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3979 into the target SBCL has been fixed.
3980 * The chill.lisp system for loading cold code into a running SBCL
3982 * Support for the CMU CL "scavenger hook" extension has been removed.
3983 (It was undocumented and unused in the CMU CL sources that SBCL was
3984 derived from, and stale in sbcl-0.6.1.)
3985 * Various errors in the cross-compiler type system were detected
3986 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3987 (enabling various consistency checks). Many of them were fixed,
3988 but some hard problems remain, so the compiler is back to
3989 running without *TYPE-SYSTEM-INITIALIZED* for now.
3990 * As part of the cross-compiler type system cleanup, I implemented
3991 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3992 * I have started adding UNCROSS calls throughout the type system
3993 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3994 on cross-compiler input files will be able to go away, and various
3996 * CONSTANTP now returns true for quoted forms (as explicitly required
3999 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4001 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4002 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4003 (MAKE-LIST -1). In the longer term, it ought to become true
4004 that declarations are assertions even at SAFETY 1. For now, it's not
4005 quite true even at SAFETY 3, but it's at least more nearly true..
4006 (Note that this change seems to increases the size of the system by
4007 O(5%) and to decrease the speed of the compiler by 20% or more.)
4008 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4009 for the problem of printing dozens of lines of distracting information
4010 about low-level system machinery as part of the top stack frame
4011 on entry to the debugger when an undefined function was called.
4012 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4013 is not reset to COMMON-LISP-USER.
4014 * Compilation of stuff related to dyncount.lisp has been made conditional
4015 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4016 smaller. The various dyncount-related symbols have been moved into
4017 a new "SB-DYNCOUNT" package.
4018 * tty-inspect.lisp has been renamed to inspect.lisp.
4019 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4020 feature has gone away. (When we eventually port to other flavors of
4021 libc and/or Unix, we'll try to make the differences between flavors
4022 invisible at the user level.)
4023 * Various other *FEATURES* tags, and/or their associated conditionals,
4024 have been removed if obsolescent, or given better documentation, or
4025 sometimes given more-mnemonic names.
4027 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4029 * tidied up "make.sh" script
4030 * tidied up system directory structure
4031 * better "clean.sh" behavior
4032 * added doc/FOR-CMUCL-DEVELOPERS
4033 * many many small tweaks to output format, e.g. removing possibly-confusing
4034 trailing #\. character in DESCRIBE-INSTANCE
4035 * (EQUALP #\A 'A) no longer signals an error.
4036 * new hashing code, including EQUALP hashing
4037 * tidied up Lisp initialization and toplevel
4038 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4039 * command line argument processing
4040 * added POSIX-GETENV function to deal with Unix-ish environment variables
4041 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4042 terminating SBCL on EOF
4043 * non-verbose GC by default
4044 * There is no more "sbcl" shell script; the sbcl file is now the C
4045 runtime executable (just like CMU CL).
4046 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4048 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4049 symbol and package information as Lisp native symbol and package objects
4050 instead of strings naming symbols and strings naming packages. This way,
4051 whenever packages are renamed (as in warm init), debug information is
4052 transformed along with everything else.
4053 * tweaked the optimization policy declarations which control the building
4054 of SBCL itself. Now, among other things, the system no longer saves
4055 source location debugging information. (This helps two problems at once
4056 by reducing SBCL size and by keeping SBCL from trying to look for its
4057 sources -- which may not exist -- when reporting errors.)
4058 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4059 debugging and testing purposes
4060 * cleaned up printing, making the printer call PRINT-OBJECT for
4061 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4062 methods, giving nearly-ANSI behavior
4063 * converted almost all special variables to use *FOO* naming convention
4064 * deleted PARSE-TIME functionality, since it can be done portably
4065 * moved some files out of cold init into warm init
4066 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4068 * regularized formatting of source files
4069 * added an install.sh script
4070 * fixed ridiculous memory usage of cross-compiler by making
4071 compiler/alloc.lisp not try to do pooling unless it can hook
4072 itself into the GC of the cross-compilation host. Now the system
4073 builds nicely on my old laptop.
4074 * added :SB-ALLOC in target-features.lisp-expr
4075 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4076 was not implemented)
4077 * re-did condition handling and note reporting in the compiler. Notes
4078 are no longer handled by signalling conditions. Style warnings
4079 and warnings are handled more correctly and reported in such a way
4080 that it's easy to find one or the other in your output (so that you
4081 can e.g. figure out which of many problems caused COMPILE-FILE to
4083 * changed the severity of several compiler warnings from full WARNING
4084 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4085 compiler note reporting so that it doesn't use the condition system
4086 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4087 COMPILE-FILE command)
4088 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4089 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4090 no longer supported, since their implementation was deeply intertwingled
4091 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4092 * removed bogus "support" for compiler macros named (SETF FOO), and
4093 removed the compiler macro for SETF INFO (but only after making a fool
4094 of myself on the cmucl-imp mailing list by posting a bogus patch for
4095 DEFINE-COMPILER-MACRO..)
4096 * Compiled files containing forms which have side effects on the Lisp
4097 reader (such as DEFPACKAGE forms) are now handled more correctly.
4098 (Compiler queuing of top level lambdas has been suppressed by setting
4099 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4100 * deleted various currently-unused source files, e.g. gengc.lisp. They
4101 may be added back at some point e.g. when porting to other architectures,
4102 but until they are it's distracting to distribute them and to try to
4104 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4105 there were so many of them they're just distractions, and UNCROSS is
4106 known to be able to handle the current sources
4107 * moved PROFILE functionality into TRACE, so that it will be clear
4108 how the wrapping and unwrapping of functions when you profile them
4109 interacts with the wrapping and unwrapping of functions when you
4110 trace them. (Actually, the functionality isn't there yet, but at least
4111 the interface specification is there. Hopefully, the functionality will
4112 arrive with some future maintenance release.)
4113 * removed host-oops.lisp
4114 * changed signature of QUIT function to allow UNIX-CODE argument
4115 * fixed READ-SEQUENCE bug
4116 * tweaked verbose GC output so that it looks more like the progress
4117 output that ANSI specifies for functions like LOAD
4118 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4119 * added <http://sbcl.sourceforge.com> to the banner information printed by