1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.6 relative to sbcl-1.0.5:
3 * enhancement: a new, experimental synchronous timeout facility is
4 provided. Refer to SB-SYS:WITH-DEADLINE for details.
5 * enhancement: when a symbol name conflict error arises, the
6 conflicting symbols are always printed with a package prefix.
8 * incompatible change: PURIFY no longer copies the data from the
9 dynamic space into the static and read-only spaces on platforms
10 that use the generational garbage collector
11 * bug fix: GETHASH, (SETF GETHASH), CLRHASH and REMHASH are now
13 * bug fix: GC race condition occasionally resulting in crashes with
14 the error message "SIG_STOP_FOR_GC blocked at a bad place" has been
16 * bug fix: &ENVIRONMENT variables in macro lambda lists can now be
18 * bug fix: DEFSETF lambda lists without &ENVIRONMENT no longer cause
19 a STYLE-WARNING to be signalled (regression from 1.0.4.)
20 * bug fix: an asynchronous interrupt could previously leave the
21 system running with GC inhibited.
22 * bug fix: a DECLARE form evaluated at top-level now causes an error
23 rather than silently (or verbosely) returning NIL.
25 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
26 * incompatible change: removed writer methods for host-ent-name,
27 host-ent-addresses -- changing the values did not update the DNS
29 * minor incompatible change: changed experimental JOIN-THREAD interface
30 * documentation: the manual now lists reader and writer methods
31 in class slot documentation sections. (thanks to Richard M Kreuter)
32 * documentation: unwinding from asyncronous events has been
34 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
35 in multithreaded application code.
36 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
37 platforms. (thanks to James Anderson for the optimization hint)
38 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
40 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
41 variants no longer cons.
42 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
43 their NOT- variants no longer cons.
44 * optimization: EQUAL hash tables no longer use SXHASH for objects
45 of all data types, but instead use an EQL hash for types for which
46 EQUAL is the same as EQL.
47 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
48 are significantly faster.
49 * optimization: new STRING-OUTPUT-STREAM implementation is much
50 faster for large outputs and conses 30% less on average.
51 * enhancement: XREF information is now collected for references made
52 to global variables using SYMBOL-VALUE and a constant argument.
53 * enhancement: SIGINT now causes a specific condition
54 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
55 * bug fix: FILE-POSITION used to signal an error in some cases where
56 ANSI requires it to return NIL.
57 * bug fix: ADJUST-ARRAY is now interrupt-safe.
58 * bug fix: adding and removing fd-handlers is now interrupt-safe.
59 * bug fix: inlined calls to C now ensure 16byte stack alignment on
61 * bug fix: bad type declaration in the CLOS implementation has
62 been fixed. (reported by James Anderson)
63 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
64 (thanks to Lutz Euler)
65 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
66 required by the CLHS. (reported by Samium Gromoff)
67 * bug fix: dead unbound variable references now signal an error.
68 (reported by Marco Monteiro)
69 * bug fix: / with an unused value was being deleted in safe code.
70 (thanks to Marco Monteiro and Kevin Reid)
71 * bug fix: number of characters that can be written onto a single
72 line in a file is unlimited.
73 * bug fix: some GC deadlocks caused by asynchronous interrupts have
74 been fixed by inhibiting interrupts for when GC is disbled.
75 * bug fix: some interrupt safety issues with GETHASH, (SETF
76 GETHASH), CLRHASH and REMHASH have been fixed.
77 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
78 specifier no longer causes infinite recursion.
79 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
80 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
81 * bug fix: an &environment argument with the correct variable information
82 is passed to macros that are expanded during byte compilation.
83 (reported by Samium Gromoff)
84 * bug fix: a logic error was causing the hash function for bignums to
85 have excessive amounts of collisions. (reported by Faré Rideau)
86 * bug fix: modifying the contents of an array could change the return
87 value of SXHASH on that array, which is only allowed for strings
88 and bit vectors. (bug introduced in 0.9.16)
89 * improvement: the x86-64/darwin port now passes all tests (except
90 for the debugger tests) but should still be considered
91 experimental until this is fixed.
92 * improvement: a style-warning is signaled for CASE (etc) clauses with
93 duplicate keys. (thanks to Kevin Reid)
94 * improvement: macos/x86 and macos/x86-64 now use mach exception
95 handlers for dealing with illegal instructions (for trapping and
96 error handling) and memory protection violations (for GC).
98 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
99 * new platform: experimental support for x86-64/darwin (MacOS).
100 * incompatible change: the thread-safe (on most platforms) getaddrinfo
101 and getnameinfo sockets functions are used instead of gethostbyaddr
102 and gethostbyname, on platforms where the newer functions are available.
103 As a result, the ALIASES field of HOST-ENT will always be NIL on these
105 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
106 don't print the startup banner, but behave as if --noinform was passed
107 as a command line argument. (thanks to Kevin Reid)
108 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
109 * optimization: code using alien values with undeclared types is much faster.
110 * optimization: the compiler is now able to open code SEARCH in more cases.
111 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
112 * bug fix: using standardized COMMON-LISP special variables as loop
113 variables no longer signals bogus package lock violations. (reported
115 * bug fix: declaring local loop variables to be of a range-limited type
116 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
117 (reported by Andras Simon)
118 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
119 bugs remain on x86-64.)
120 * bug fix: the #= and ## reader macros now interact reasonably with
121 funcallable instances.
122 * bug fix: type-checks for function arguments were compiled using the
123 compiler policy settings of the wrong lexical environment (in 1.0.2
125 * bug fix: SHADOW accepts characters as string designators, as required
126 by the spec (thanks to Eric Marsden)
127 * bug fix: fixed GC safety issues when foreign functions are called with
128 non-base strings as arguments
129 * bug fix: more consistent error output for fatal-compiler-warnings, like
131 * bug fix: functions with proper names were showing up as NIL in
132 backtraces (reported by Edi Weitz, regression in 1.0.2)
134 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
135 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
136 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
137 produce more efficient code on the x86 if the compiler can determine
138 that (+ INDEX <constant>) does not require a bounds check and FOO
139 has an element type at least 8 bits wide.
140 * bug fix: references to undefined variables are handled the same way
141 in toplevel forms as in the normal compiler
142 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
144 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
145 (thanks to Jon Buller)
146 * improvement: faster compilation times for complex functions
147 * improvement: added readlink support to SB-POSIX (thanks to Richard
150 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
151 * improvement: experimental support for mach exception handling on
152 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
154 * improvement: support for GBK external format.
155 (thanks to Chun Tian (binghe))
156 * improvement: the debugger now displays variables that have been closed
157 over, in code compiled with (DEBUG 2) or higher
158 * improvement: support for executable cores on NetBSD (thanks to
160 * new feature: added a RESTART-FRAME debugger command
161 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
162 be used to provide an implementation for FILE-POSITION on Gray streams
163 (thanks to Eric Marsden)
164 * new feature: add syslog, openlog and closelog support to SB-POSIX
165 (thanks to Richard Kreuter)
166 * optimization: the function call overhead in code compiled with
167 a high DEBUG optimization setting is significantly
168 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
169 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
170 (thanks to Tony Martinez)
171 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
172 evaluated once (reported by Kevin Reid)
173 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
174 works again (thanks to Kilian Sprotte)
175 * bug fix: an error is signaled for tagbodies with duplicate tags
176 (thanks to Stephen Wilson)
177 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
178 * bug fix: Win32 port can now handle foreign code unwinding Lisp
179 stack frames from alien callbacks.
180 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
181 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
182 65k pages (thanks to David Woodhouse)
183 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
185 changes in sbcl-1.0.1 relative to sbcl-1.0:
186 * new platform: FreeBSD/x86-64, including support for threading.
187 * new feature: the compiler stores cross-referencing information
188 abount function calls (who-calls), macroexpansion (who-macroexpands)
189 and special variables (who-binds, who-sets, who-references) for code
190 compiled with (< SPACE 3). This information is available through the
191 sb-introspect contrib.
192 * new feature: users may subclass SEQUENCE, and have instances of
193 these classes interoperate with standard Common Lisp functions if
194 a number of methods are defined. (This feature is experimental
195 and the interface subject to change based on feedback from SBCL
196 users and the general community)
197 * improvement: sb-sprof traces call stacks to an arbitrary depth on
198 x86/x86-64, rather than the previous fixed depth of 8
199 * improvement: another pthread back-end of mutex "pthread-futex".
200 * bug fix: non-ascii command-line arguments are processed correctly
201 (thanks to Yaroslav Kavenchuk)
202 * bug fix: non-required arguments were not passed correctly when a method
203 defined using DEFMETHOD was called from a mop-generated method using
204 CALL-NEXT-METHOD (reported by Pascal Costanza)
205 * bug fix: recursion is now permitted in accessors through
206 SLOT-UNBOUND. (reported by Pascal Costanza)
207 * bug fix: an error was signaled at startup if the HOME environment
208 variable was defined, but had an empty value (reported by Peter Van Eynde)
209 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
210 signal a PROGRAM-ERROR, not a BUG.
211 * bug fix: SB-POSIX:READDIR works when built with large file support.
212 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
214 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
215 for better automatic indentation support. (thanks to Matt Pillsbury)
216 * optimization: loading generic functions no longer takes O(n^2) time,
217 proportional to the amount of methods in the generic function
218 (reported by Todd Sabin and Jeremy Brown)
219 * optimization: the FIND and POSITION family of sequence functions
220 are significantly faster on arrays whose element types have been
222 * improvements to the Windows port:
223 ** Intermittent heap corruption problems have been fixed. (thanks
224 to Alastair Bridgewater)
225 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
227 ** Lisp is able to unwind foreign exception frames from alien
228 callbacks. (thanks to Alastair Bridgewater)
230 changes in sbcl-1.0 relative to sbcl-0.9.18:
231 * improvement: experimental support for threading on FreeBSD/x86.
232 (thanks to NIIMI Satoshi)
233 * improvement: runtime option --dynamic-space-size can be used
234 to set the size of the dynamic space reserved on startup.
235 * improvement: floating point modes in effect are now saved in
236 core, and restored on startup.
237 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
238 startup, not time since first call to GET-INTERNAL-REAL-TIME.
239 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
240 threads are not running after *SAVE-HOOKS* have run.
241 * improvement: writes to CLOS instance slots are type-checked in code
242 compiled with (SAFETY 3)
243 * improvement: floating-point exception handling on FreeBSD (thanks to
245 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
246 (thanks to Zach Beane)
247 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
249 * improvement: added support for the Shift-JIS external format.
250 (contributed by NIIMI Satoshi)
251 * improvement: callbacks are supported on Linux/PPC. (thanks to
253 * bug fix: compiler bug triggered by a (non-standard) VALUES
254 declaration in a LET* was fixed. (reported by Kaersten Poeck)
255 * bug fix: file compiler no longer confuses validated and already
256 dumped structurres. (reported by Kaersten Poeck)
257 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
258 fill-pointer signals a type-error as required. (thanks to
260 * bug fix: disassemly of funcallable instances works.
261 * bug fix: single stepping on PPC.
262 * bug fix: fix thread-safety problems in the type system (generally
263 manifesting as nonsensical errors like "STRING is a bad type specifier
264 for sequences" or "The value 1 is not of type FIXNUM")
265 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
266 (reported by Josip Gracin)
267 * bug fix: an error is signaled for attempts to displace arrays with
268 incompatible element types (thanks to Mario Mommer)
269 * bug fix: more correct handling of wide characters in debug info
270 (bug reported by Attila Lendvai and fixed by Juho Snellman)
271 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
272 and don't cause extra consing
273 * optimization: MAP and MAP-INTO are significantly faster on vectors
274 whose elements types have been declared.
275 * Improvements to SB-SPROF:
276 ** Support for allocation profiling
277 ** Reduced profiling overhead, especially for long profiling runs
278 * Improvements to the Windows port:
279 ** floating point exceptions are now reported correctly.
280 ** stack exhaustion detection works partially.
281 ** more accurate GET-INTERNAL-REAL-TIME.
282 ** better RUN-PROGRAM behaviour in case of errors in the child
284 ** PROBE-FILE now simplifies pathnames correctly.
285 ** DIRECTORY now works correctly with :WILD-INFERIORS.
286 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
287 1st 1970 (although time timezone data will be unreliable).
288 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
290 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
291 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
292 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
294 * bug fix: two potential GC deadlocks affecting threaded builds.
295 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
296 returns T (reported by Anton Kazennikov)
297 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
298 with non-variable places
299 * bug fix: remove a race condition in the setting of
300 funcallable-instance functions, this should make threaded CLOS
301 code more stable against memory faults.
302 * bug fix: corruption of specials when unbinding is interrupted by an
303 asynchronous unwind (reported by Hannu Koivisto)
304 * improvement: the debugger will now also display local variables that
305 are only used once, for code compiled with a DEBUG optimization quality
308 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
309 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
310 * incompatible change: External-format support for FFI calls. The
311 SB-ALIEN:C-STRING no longer implies an ASCII
312 external-format. Instead the string is subject to external-format
313 conversion. Additionally return values of type SB-ALIEN:C-STRING
314 are by default of type (SIMPLE-ARRAY CHARACTER), not
315 SIMPLE-BASE-STRING. For an alien type that behaves like the old
316 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
317 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
318 * incompatible change: SB-EXT package no longer contains the
319 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
320 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
322 * incompatible change: the single-stepper is no longer available
323 on Alpha, Mips and Sparc platforms.
324 * minor incompatible change: the direct superclasses of
325 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
326 not (STANDARD-OBJECT FUNCTION). This makes the
327 class-precedence-lists of GENERIC-FUNCTION and
328 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
330 * minor incompatible change: the default stream external format on
331 non-unicode SBCL is no longer detected from the locale, but is always
333 * new feature: Add a version of evaluator that uses an interpreter instead
334 of the compiler. EVAL still uses the compiler by default, to switch it
335 to use the interpreter, set the value of the variable
336 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
337 * minor incompatible change: the single-stepper REPL has been merged
338 with the normal debugger (see the "Stepping" heading of the debugger help
339 for more details). The debugger command STEP will no longer switch
340 to the single-stepper REPL.
341 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
342 for a type now works.
343 * bug fix: loading of default sysinit file works. (thanks to Leonid
345 * bug fix: better detection of circularities in the file-compiler.
346 (reported by Marco Monteiro)
347 * bug fix: the CL pathname functions now work with files that have
348 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
349 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
350 systems with Unix98 pty semantics.
351 * bug fix: ASDF-INSTALL will now work with bsd tar.
352 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
354 * bug fix: timers expiring in dead threads no longer cause a
355 type-error (reported by Paul "Nonny Mouse").
356 * bug fix: thanks to more lightweight single-stepper instrumentation,
357 code compiled with (DEBUG 3) will compile and execute significantly faster,
358 and will have more accurate type-inferencing than before
359 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
360 whose bindings are modified
361 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
362 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
363 ** replace dummy implementations of CL:MACHINE-INSTANCE and
364 CL:SOFTWARE-VERSION with proper version
366 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
367 * feature: implemented the READER-METHOD-CLASS and
368 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
369 as specified by AMOP.
370 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
372 * optimization: faster LOGCOUNT implementation on x86 and x86-64
373 (thanks to Lutz Euler)
374 * optimization: hashing of general arrays and vectors has been
375 improved. (reported by Any Fingerhut)
376 * enhancement: SB-INTROSPECT is now able to find definitions of
377 profiled functions. (thanks to Troels Henriksen)
378 * enhancement: compiler-macro expansion applies now to FUNCALL forms
379 as well, allowing compiler-macros for SETF-functions to expand.
380 * enhancement: step-instrumentation no longer wraps known
381 single-value functions with multiple-value context, allowing
382 better type inference.
383 * fixed bug #337: use of MAKE-METHOD in method combination now works
384 even in the presence of user-defined method classes. (reported by
385 Bruno Haible and Pascal Costanza)
386 * fixed bug #339(c): if there are applicable methods not part of any
387 long-form method-combination group, call INVALID-METHOD-ERROR.
388 (reported by Bruno Haible)
389 * fixed bug #361: the :FUNCTION initarg in the protocol for
390 initialization of methods can now be used to override
391 internally-produced optimized functions. (reported by Bruno
393 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
394 system-provided lambda expression no longer cause warnings about
395 unbound #:|pv-table| symbols.
396 * bug fix: improved the handling of type declarations and the
397 detection of violations for keyword arguments with non-constant
399 * bug fix: potentially erronous calls to PATHNAME and
400 MERGE-PATHNAMES were being flushed in some cases.
401 (reported by Richard Kreuter)
402 * bug fix: compiled calls to TYPEP were mishandling obsolete
403 instances. (reported by James Bielman and Attila Lendvai)
404 * bug fix: format strings with ~> without matching ~< no longer
405 trigger an AVER, but signal an understandable error instead.
406 (reported by Antonio Martinez)
407 * bug fix: specifying an output-file without a pathname-type for
408 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
409 of input-file instead of "fasl". (reported by Robert Dodier)
410 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
411 (reported by James Y Knight).
412 * bug fix: compiler-macros-function did not consider the environment
413 argument for shadowing by local functions.
414 * bug fix: compiler-macros expansion was inhibited by local INLINE
416 * bug fix: inline expansions of known functions were subject to
417 step-instrumentation in high debug policies, leading to problems
419 * bug fix: compiler failed to differentiate between different CONS
421 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
422 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
423 * bug fix: #368: incorrect use of expressed vs. upgraded array
425 * bug fix: #306a: more precise unions of array types.
426 * thread-safety improvements:
427 ** CONDITION-WAIT could return early on Linux, if the thread was
428 interrupted and subsequently continued with SIGCONT.
429 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
431 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
432 * added support for the ucs-2 external format. (contributed by Ivan
434 * minor incompatible change: pretty printing of objects of type
435 (cons symbol) is, in the default pprint-dispatch-table, now
436 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
438 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
439 called later in a class's lifetime, possibly as late as when the
440 first instance of the class is created. Previously,
441 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
442 class became finalizeable.
443 * fixed bug: FILE-POSITION sometimes returned inconsistent results
444 for multibyte external-format streams. (thanks to "vbzoli")
445 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
446 with :ALLOCATION :CLASS inherited from superclasses of the
448 * fixed bug: anonymous classes can now be created using the :NAME
449 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
450 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
451 * fixed bug: core-files saved with :EXECUTABLE T can again be
452 executed when SBCL_HOME isn't set. (reported by James Knight)
453 * fixed bug: toplevel LOCALLY forms with declarations could
454 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
455 * fixed bug: printing from several different threads using different
456 values of *print-case* could cause invalid output, due to
457 some internal special variables of the printer not being bound
458 thread-locally (reported by Max Mikhanosha)
459 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
460 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
461 (reported by Pascal Costanza)
462 * fixed bug: FINALIZE-INHERITANCE is called from
463 REINITIALIZE-INSTANCE on classes when the class has previously
464 been finalized, as required by AMOP.
465 * minor code generation optimizations:
466 ** better register allocation in CLOS dispatching functions
467 ** overflow detection when coercing signed bytes to fixnums on x86-64
468 ** is now implemented with one IMUL instruction instead of three shifts
469 ** more efficient bit-vector access on x86 and x86-64
470 ** more efficient access to raw structure slots on x86 and x86-64
471 * fixed some bugs revealed by Paul Dietz' test suite:
472 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
475 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
476 * feature: thread support on Solaris/x86, and experimental thread support
478 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
480 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
481 default method for SLOT-UNBOUND.
482 * minor incompatible change: prevent the user from specializing the
483 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
484 somewhat counter to the intent of the protocol, I (CSR) think, and
485 additionally it just doesn't work in SBCL as currently
486 implemented, thanks to optimizations (that are always valid for
487 the other three SLOT-VALUEish functions, but not for the setter).
488 * minor incompatible change: the :SB-LDB feature is now enabled by
489 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
490 the low-level debugger.
491 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
492 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
493 down to an SB-SYS:FD-STREAM, allowing direct communication in
494 more cases. Temporary files and pipes are still used as a fallback
496 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
497 on the non-reentrant C functions localtime(3) and gmtime(3).
498 * bug fix: global optimization policy was not visible in LOCALLY and
500 * bug fix: class objects can be used as specializers in methods.
501 (reported by Pascal Costanza)
502 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
503 with a type error. (reported by blitz_ on #lisp)
504 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
505 failed with a type error. (reported by Pascal Bourguignon)
506 * bug fix: merging pathnames against defaults with :DIRECTORY
507 starting with '(:RELATIVE :BACK) should preserve the :BACK.
508 (reported by James Y Knight)
509 * bug fix: saving large (>2GB) cores on x86-64 now works
510 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
511 constant index and a (simple-array (signed-byte 32)) array
512 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
513 error (patch by Robert J. Macomber)
514 * feature: TIME now displays the amount of run-time spent in GC
515 * bug fix: The debugger now does a better job of respecting
516 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
517 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
518 workaround for bug 403.)
519 * bug fix: floating point exception handling now works on FreeBSD
520 (thanks to NIIMI Satoshi)
521 * fixed some bugs revealed by Paul Dietz' test suite:
522 ** MISC.641: LET-conversion were not supposed to work in late
524 * improvements to the Win32/x86 port:
525 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
526 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
528 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
529 * new feature: source path information is generated for macro-expansion
530 errors for use in IDE's like Slime (thanks to Helmut Eller)
531 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
532 * bug fix: compiler does not loop forever on an invalid type in
534 * improvement: compilation of most CLOS applications is significantly
536 * optimization: added a limited bytecode compiler for simple toplevel
537 forms, speeding up compilation and FASL loading
538 * bug fix: the statistical profiler now properly distinguishes anonymous
541 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
542 * minor incompatible change: in sbcl-0.9.11 (but not earlier
543 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
544 into subclasses of the finalized class. Now user calls to
545 FINALIZE-INHERITANCE finalize just the one class, and calls by the
546 system return before any subclasses are finalized.
547 * minor incompatible change: The reader no longer ignores errors
548 regarding non-existent packages in #+ and #- feature tests.
549 * new feature: command line options --no-sysinit, --no-userinit to
550 inhibit loading the corresponding init files
551 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
552 for sending data through UDP sockets (thanks to François-René Rideau)
553 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
554 error is signalled instead (thanks to François-René Rideau)
555 * minor incompatible change: Error signalling behaviour of lexical
556 operations violating package locks has changed slightly. Refer to
557 documentation on package locks for details.
558 * enhancement: EVAL can process IF-expressions without resorting to the
560 * bug fix: Some operations involving SIN, COS, or TAN weren't being
561 constant-folded properly due to missing out-of-line functions.
562 (reported by Mika Pihlajamäki)
563 * bug fix: LISTEN sometimes returned T even in cases where no data was
564 immediately available from the stream
565 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
566 were reversed. (reported by Levente Mészáros)
567 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
568 when given a vector displaced to an adjustable array. (reported
570 * bug fix: derivation of float boundaries from numbers outside the
571 appropriate float range (reported by John Wiseman)
572 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
574 * bug fix: precomputing cache entries for generic functions with
575 some subclasses of specializers as yet invalid does not attempt to
576 fill a cache line with a negative offset. (reported by Levente
578 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
579 allow condition class objects as arguments to DOCUMENTATION and
580 (SETF DOCUMENTATION); only find and set documentation for
581 structure names for the STRUCTURE doc-type. (suggested by Gary
583 * improvements to the Win32/x86 port:
584 ** (user-homedir-pathname) and default initialization file
585 locations now know about the user's "Documents and Settings"
586 directory (thanks to Yaroslav Kavenchuk)
587 ** run-program is implemented (thanks to Mike Thomas)
588 ** sockets support (thanks to Timothy Ritchey)
589 ** better backtrace support (thanks to Alastair Bridgewater)
590 ** sb-grovel supported
591 ** asdf-install and sb-posix work somewhat
592 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
593 * improvements to the Solaris/x86 port:
594 ** works on Solaris 11/Solaris Express
595 ** floating-point exception handling support
596 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
597 * fixed some bugs revealed by Paul Dietz' test suite:
598 ** REMOVE-METHOD returns its generic function argument even when
599 the method is not one of the generic functions' methods.
600 ** objects declared as MEMBER types can be admissible arguments to
602 ** printing characters should simply be printed by the FORMAT ~:C
604 ** compiler failure when compiling functions with hairy constant
605 defaults for optional parameters.
606 ** compiler produces wrong code when MAYBE-INLINE-expanding a
607 function, which is already optimized.
609 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
610 * new platform: experimental support for SBCL x86/Darwin, including
611 MacOS X 10.4.5 on Intel.
612 * new feature: Unicode character names are now known to the system
613 (through CHAR-NAME and NAME-CHAR).
614 * new feature: the filesystem location of SBCL's core file is
615 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
616 * minor incompatible change: the contrib modules SB-POSIX and
617 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
618 this change is to make it easier to distribute
619 location-independent binaries.
620 * bug fix: as implied by AMOP, standardized classes no longer have
621 slots named by external symbols of public packages. (reported by
623 * optimization: calling functions via constant symbols -- as in
624 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
625 via the function object as in (FUNCALL #'FOO).
626 * optimization: on x86 and x86-64, the calling convention for the
627 case of dealing with an unknown number of values has been altered
628 to be friendlier to the prediction heuristics implemented,
629 particularly with reference to CALL and RET pairing. (thanks to
630 Alastair Bridgewater)
631 * optimization: on x86, the code for access to thread-local symbol
632 values and binding/unbinding of thread-local symbols is smaller.
633 (thanks to Alastair Bridgewater)
634 * enhancement: CONSTANTP is now able to determine constantness of
635 more complex forms, including calls to constant-foldable standardized
636 functions and some special forms beyond QUOTE.
637 * fixed bug: occasional GC crashes on Solaris/x86
638 * optimization: x86-64 supports stack allocation of results of simple
639 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
640 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
641 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
642 (thanks to James Knight)
643 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
644 by the standard (thanks to Stephen Compall)
646 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
647 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
648 be used for bundling the runtime and the core file into one
649 executable binary. This feature is not currently supported on all SBCL
650 platforms. (thanks to James Bielman and NIIMI Satoshi)
651 * new feature: a generational or ephemeral garbage collector is now
652 the default on the PowerPC platform (both Linux and Darwin). The
653 old Cheney (stop and copy) collector is a build-time option.
654 (thanks to Cyrus Harmon, after Raymond Toy)
655 * minor incompatible change: the method by which SBCL finds its
656 contributed modules has changed; it no longer relies on symbolic
657 links from an $SBCL_HOME/systems directory, but searches directly
658 in the subdirectories of $SBCL_HOME.
659 * enhancement: the dynamic heap size on the Linux/PPC platform is
660 markedly larger, even using the older Cheney garbage collector.
661 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
662 certain complicated string types. (reported by Gary King)
663 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
664 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
665 * fixed bug: DOCUMENTATION on structures no longer signals an
666 error if no structure type of the right name exists. (reported by
668 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
669 applicable non-standard primary or :AROUND method on
670 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
671 no longer cause unbound variable errors. (reported by Kevin Reid)
672 * fixed bug: metacircle resolution in cases where methods have slots
673 added before the slots from STANDARD-METHOD. (reported by Jean
675 * fixed bug: the Power PC assembly code for calling into lisp
676 sometimes computed its return address wrongly (depending on the
677 15th bit of the address, fixed at link time). This used to
678 manifest itself in a segmentation violation while building PCL.
679 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
680 many others over the years)
681 * fixed bug: ROOM no longer reports silly numbers for stack usage if
682 the stack pointer (treated as a signed integer) is negative.
683 (thanks to Peter van Eynde)
685 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
686 * new platform: experimental support for the Windows operating
687 system has been added. (thanks to Alastair Bridgewater)
688 * fixed several bugs in and robustified the PPC FFI (including
689 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
690 * bug fix: allow non-simple string symbol names (reported by Paul
692 * bug fix: interrupt handling on NetBSD (thanks to Richard M
694 * bug fix: saving a core corrupted callbacks on x86/x86-64
695 * bug fix: closed a loophole in metacircularity detection and
696 grounding in the PCL implementation of CLOS.
697 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
698 (reported by tomppa on #lisp)
699 * bug fix: clear the direction flag on Lisp -> C transitions, as
700 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
701 (reported by Andrej Grozin and Hendrik Maryns)
702 * optimization: major improvements to GC efficiency on GENCGC platforms
703 * optimization: faster implementation of EQUAL
704 * optimization: emit more efficient opcodes for some common
705 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
706 * optimization: several other minor code-generation improvements on x86-64
707 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
709 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
710 * minor incompatible change: (SETF CLASS-NAME) and (SETF
711 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
712 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
713 by ANSI as a generic function, and for consistency (SETF
714 GENERIC-FUNCTION-NAME) is treated likewise.
715 * fixed bug #233.b: make constraint propagation notice when a variable
716 value is changed after it is referenced but before it is used
717 * fixed bug #296: no more arbitrary behaviour from filenames with
718 odd characters as --load arguments. (reported by Adam Warner)
719 * fixed bug #390: :CHARACTER-SET pathname components now work as
720 expected. (reported by Tim Daly Jr)
721 * fixed bug #391: complicated :TYPE intersections in slot
722 definitions no longer cause an error in PCL internals.
723 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
724 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
725 returning the number of octets which would be written to the
726 file-stream. (thanks to Robert J. Macomber)
727 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
728 arguments to the internal stream functions. (thanks to David
730 * bug fix: stack exhaustion is now handled on the x86/SunOS
731 platform. (thanks to Daisuke Homma)
732 * bug fix: more accurate ROOM results on GENCGC platforms
733 * optimization: improved type inference for arithmetic-for
734 index variables in LOOP
735 * optimization: faster floating-point SQRT on x86-64
736 * fixed some bugs revealed by Paul Dietz' test suite:
737 ** DOCUMENTATION returns NIL instead of "" for method combinations
738 that don't have a docstring
740 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
741 * minor incompatible change: (SETF CLASS-NAME) and (SETF
742 GENERIC-FUNCTION-NAME) are no longer generic functions, and
743 therefore are not customizeable by user code (as seems to be at
744 least permitted and maybe required by AMOP). As a consolation,
745 however, the SBCL implementation of these functions now calls
746 REINITIALIZE-INSTANCE as specified by AMOP.
747 * bug fix: slot-definition documentation is propagated as per ANSI
748 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
749 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
750 argument, as do eslotd initialization methods. (from Pascal
751 Costanza's "Closer" project)
752 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
753 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
755 * bug fix: it is now possible to have more than one subclass of
756 STANDARD-GENERIC-FUNCTION without causing stack overflow.
757 (reported by Bruno Haible, Pascal Costanza and others)
758 * bug fix: the dependent update protocol now works for generic
759 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
761 * bug fix: condition-class instances corresponding to
762 DEFINE-CONDITION forms are now created eagerly. (reported by
763 Kalle Olavi Niemitalo on comp.lang.lisp)
764 * bug fix: floating point printing is more accurate in some
765 circumstances. (thanks to Simon Alexander)
766 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
767 merged with *DEFAULT-PATHNAME-DEFAULTS*.
768 * bug fix: callbacks on OS X now preserve stack-alignment.
769 (thanks to Cyrus Harmon)
770 * enhancement: the x86-64 disassembler is much better at
771 disassembling SSE instructions. (thanks to Lutz Euler)
772 * enhancement: CHECK-TYPE on a variable now allows type-inference
773 (thanks to Vincent Arkesteijn)
774 * optimization: improved performance of EUC-JP external format.
775 (thanks to NIIMI Satoshi)
776 * optimization: performance improvements to IO on file streams of
777 :ELEMENT-TYPE CHARACTER
778 * optimization: much faster memory allocation on x86-64
779 * optimization: faster garbage collections (latency and throughput)
781 * optimization: faster bignum subtraction and division on x86 and x86-64
782 (thanks to Lutz Euler)
783 * optimization: more accurate type-inference for loops that use a
784 floating point index variable or a negative step.
786 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
787 * bug fix: add a workaround to SBCL looping infinitely at startup on
788 Linux kernels with apparently buggy implementations of personality().
789 (thanks to Svein Ove Aas)
790 * bug fix: Unicode symbols are correctly printed in LDB backtraces
791 (thanks to David Lichteblau)
792 * bug fix: local bindings shadow global symbol macros for
793 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
794 * optimization: non-open coded uses of numeric comparison operators
795 (e.g. >) no longer cons when called with more than one parameter
796 on platforms supporting dynamic-extent allocation.
797 * enhancement: saving cores with foreign code loaded is now supported
798 on MIPS/Linux in addition to the previously supported platforms.
799 * bug fix: FIND-RESTART now tests for activity, not applicability when given
800 a restart object as identifier. (reported by Helmut Eller for CMUCL)
801 * bug fix: division by zero in sb-sprof when no samples were collected
802 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
803 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
804 (thanks to Alexander Kjeldaas)
805 * new feature: ignoring the return values of destructive functions
806 like NREVERSE signals a compile-time style-warning.
807 (thanks to Kevin Reid)
808 * new feature: the alignment of alien structure fields can be
809 explicitly specified. (thanks to Cyrus Harmon)
810 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
811 and dump core on SIGQUIT
813 ** incompatible change: threads do not inherit values of specials
814 from their parents (see manual)
815 ** bug fix: threads stacks belonging to dead threads are freed by the
816 next exiting thread, no need to gc to collect thread stacks anymore
817 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
818 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
819 ** bug fix: dynamic variable and thread start related gc lossage
820 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
822 * fixed some bugs revealed by Paul Dietz' test suite:
823 ** SUBTYPEP is slightly more accurate on heinously complicated
824 CONS types where some of the members have uncertain (in the
825 NIL, NIL sense) type relationships to each other.
827 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
828 no longer purified unless :PURIFY T is explicitly specified.
829 ** Non-purified cores are significantly smaller than before
831 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
832 * new feature: timers based on Zach Beane's excellent timer package
833 * added support for the following external formats: koi8-u,
834 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
835 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
836 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
837 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
838 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
839 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
840 * incompatible change: a threaded SBCL will no longer revert to
841 non-threaded mode on non-NPTL systems, but refuse to start entirely.
842 * bug fix: interrupts are disabled until startup is complete; no
843 more sigsegvs when receiving a signal to soon
844 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
846 * bug fix: add a workaround for the memory randomization features in
847 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
848 workaround will only be in effect on systems with the proc filesystem
850 * bug fix: printing objects of type HASH-TABLE signals a
851 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
853 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
854 have been running for over 50 days. (reported by Gilbert Baumann)
855 * bug fix: the logic for getting names of functions gets less
856 confused when confronded with alternate-metaclass
857 funcallable-instances. (reported by Cyrus Harmon)
858 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
859 consistent, even on internal alternate-metaclass objects.
860 * bug fix: flush closure information collected by physical
861 environment analysis prepass before the main pass. (bug reported
863 * bug fix: compiler pack phase does not modify a hashtable, which is
864 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
865 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
866 may be expanded. (reported by Alexander <malishev> on c.l.l)
867 * bug fix: no more style-warnings when compiling code using LAST
868 under high-SPEED low-SPACE settings. (reported by David Wallin
870 * fixed some incompatibilities between SBCL's MOP and the MOP
872 ** the METAOBJECT class is now implemented;
873 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
874 STANDARD-OBJECT, as required;
875 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
876 now compatible (as required by VALIDATE-SUPERCLASS); there
877 remains a consistency requirement over the presence or absence
878 of the FUNCTION class in the superclass list of finalized
879 classes; see the manual for more details;
880 ** the :AROUND method for COMPUTE-SLOTS on
881 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
882 requested slot ordering.
884 ** bug fix: parent thread now can be gc'ed even with a live
886 ** bug fix: binding a special with PROGV to no value is not
887 the same as that symbol not having been bound (thanks to
889 ** bug fix: binding specials is thread safe (thanks to
891 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
892 and SB-SPROF do not die with 'no handler for signal XX in
893 interrupt_handle_now(..)' anymore
894 ** bug fix: WITH-TIMEOUT works with multiple running threads
895 * fixed some bugs revealed by Paul Dietz' test suite:
896 ** ENSURE-GENERIC-FUNCTION should take a method class object for
897 the :method-class keyword argument.
899 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
900 * new port: the Solaris operating system on x86 processors is now
901 mostly supported, though some rough edges in the environment
902 remain. (thanks to Daisuke Homma)
903 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
904 space for its heap. (thanks to Thiemo Seufer)
905 * optimization: SBCL on MIPS platforms now supports dynamic-extent
906 closures. (thanks to Thiemo Seufer)
907 * minor incompatible change: eof selects abort in the debugger.
908 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
909 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
911 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
912 deprecated, and will go away in a future revision of SBCL.
913 * minor incompatible change: GC-ON and GC-OFF are no longer
914 implemented with a counter, it does not matter how many times gc
915 is switched on or off
916 * bug fix: discriminating functions for generic function classes
917 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
918 make invalid assumptions about method precedence order. (reported
920 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
921 platforms. (thanks to Thiemo Seufer)
922 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
923 * bug fix: correct pathname printing with printer escaping is on.
924 (thanks to Kevin Reid)
925 * bug fix: complex VOP definitions in "user-space" no longer trigger
926 package locks. (reported by Zach Beane)
927 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
928 for funcallable-instance functions, and is no different from
930 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
931 characters in the current readtable. (reported by Nicholas Neuss)
932 * bug fix: SUBTYPEP on various CONS types returns more a more
933 accurate acknowledgment of its certainty.
934 * optimizations: REMOVE-DUPLICATES now runs in linear time on
935 lists in some cases. This partially fixes bug 384.
936 * flush all standard streams before prompting in the REPL and the
938 * bug fix: signal handling and triggering gc do not conflict
939 directly anymore, in particular a high frequency sb-sprof does
940 not prevent gc from running
941 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
942 approximation for timezone and DST information between the
943 universal time epoch and the smallest negative 32-bit time_t.
944 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
945 year 1899 so long as the encoded time is non-negative.
946 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
947 the correct answer for non-constant rotate amounts when performing
948 an inline 32-bit rotation.
950 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
951 there is only one thread in the session
952 ** bug fix: memory leak for streams created in one thread and
953 written to in another
954 ** bug fix: lockup when compiled with gcc4
955 ** bug fix: race that allows the gc to be triggered when gc is
957 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
958 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
960 ** bug fix: finished threads are gc'ed properly
961 * fixed some bugs revealed by Paul Dietz' test suite:
962 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
963 has arguments with a different set of applicable methods from
964 the orignal arguments.
965 ** The type error thrown by MAP now has a correct expected-type
967 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
968 name a compiled function.
969 ** Three MISC tests where a large bignum was improperly coerced to
970 a float that couldn't represent that bignum during type
971 derivation were fixed.
972 ** SUBTYPEP can now handle types involving the negation of a
973 list-form FUNCTION type.
974 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
975 as (COMPLEX (AND RATIO (NOT FIXNUM))).
976 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
978 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
979 * New feature: Experimental support for bivalent streams: streams
980 opened with :element-type :default now allow character and binary
981 (unsigned-byte 8) I/O
982 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
983 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
985 * bug fix: no more highly sporadic "couldn't check whether ~S is
986 readable" when reading a stream and an interrupt hits in the middle
987 of a select system call
988 * compiler better recognizes complex arrays (reported by Eduardo
990 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
991 for variables on SBCL built with linkage-tables. (reported by Luis
993 * various error reporting improvements.
994 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
995 (Thanks to Thiemo Seufer)
996 * bug fix: nested reader invokations work correctly
997 * bug fix: it is possible to have simultaneous references to foreign
998 code and foreign data with the same name.
1000 ** added x86-64 support
1001 ** incompatible change: the threading api now works with thread
1002 objects instead of thread ids
1003 ** bug fix: threads are protected from signals and interruption when
1004 starting up or going down
1005 ** bug fix: a race where an exiting thread could lose its stack to gc
1006 ** bug fix: don't halt on infinite error in threads if possible
1007 ** fixed numerous gc deadlocks introduced in the pthread merge
1008 ** bug fix: fixed thread safety issues in read and print
1009 ** bug fix: debugger doesn't hang on session lock if interrupted at
1010 an inappropriate moment
1011 ** bug fix: run-program is now thread safe(r)
1012 ** bug fix: inner with-recursive-lock no longer releases the mutex
1013 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1014 * fixed some bugs revealed by Paul Dietz' test suite:
1015 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1016 EXPECTED-TYPE slots filled.
1017 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1019 ** MAKE-CONDITION accepts classes as type-designators.
1020 ** COMPILE may never return NIL.
1021 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1022 range before calling Unix time functions
1024 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1025 * numerous signal handling fixes to increase stability
1026 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1027 * minor incompatible change: we now correctly canonize default
1028 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1029 as per the MOP, rather than the historical (INITARG INITFUNCTION
1030 INITFORM). (reported by Bruno Haible)
1031 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1032 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1033 for more information.
1034 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1035 pathname is a directory pathname.
1036 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1037 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1039 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1040 :METACLASS argument in addition to a class name. (reported by
1041 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1042 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1043 (reported by Bruno Haible; patch from Gerd Moellmann)
1044 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1046 * bug fix: more cleanups to the floating point exception handling on
1047 x86-64 (thanks to James Knight)
1048 * bug fix: the compiler does not try to constant fold calls of
1049 COERCE and BIT-* functions when they return freshly constructed
1050 objects. (reported by Nikodemus Siivola and Paul Dietz)
1051 * optimization: improved the MIPS versions of generic (in the
1052 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1053 * optimization: direct conversion of (unsigned-byte 32) to floats on
1054 the PowerPC platform.
1055 * optimization: structure instances with raw slots now use less
1056 memory, and probably show better memory locality. (thanks to
1058 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1059 are treated as requests for stack allocation on the x86-64,
1060 Alpha-32, PPC and SPARC platforms.
1061 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1062 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1063 (thanks to Tony Martinez)
1065 ** gcing a dead thread can no longer lead to lockups
1066 ** threads block signals until they are set up properly
1067 ** errno is no longer shared by threads
1068 ** interrupt-thread restores the eflags register on x86
1069 ** fixed some lockups due to gc/thread interaction
1070 * fixed some bugs revealed by Paul Dietz' test suite:
1071 ** invalid dotted lists no longer raise a read error when
1072 *READ-SUPPRESS* is T
1073 ** signal an error if a symbol that names a declaration is used
1074 as the name of a type, or vice versa
1075 ** allow using the (declare (typespec var*)) abbreviation for
1076 (declare (type typespec var*)) with all type specifiers
1077 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1078 ** always return NIL from PPRINT-POP when OBJECT is NIL
1079 ** don't signal errors when pretty-printing malformed LABELS,
1080 FLET or MACROLET forms
1081 ** declarations in a DOLIST body are also in scope for the
1083 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1085 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1088 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1089 * fixed cross-compiler leakages that prevented building a 32-bit
1090 target with a 64-bit host compiler.
1091 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1092 opened with :IF-EXISTS :OVERWRITE.
1093 * fixed bug 281: error for an invalid qualifier in a short-form method
1094 combination method is not signalled until the faulty method is called.
1095 * bug fix: iteration variable type inferrer failed to deal with open
1096 intervals. (reported by Alan Shields)
1097 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1098 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1099 or more runtime options were provided to the sbcl binary.
1100 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1101 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1102 * optimization: there's now a fast-path for fixnum arguments in the
1103 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1104 * optimization: the code generated on x86-64 is more compact thanks
1105 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1106 * bug fix: floating-point exception handling now partly works on
1107 x86-64. (Thanks to James Knight)
1108 * improvement to the MIPS backend from Thiemo Seufer: C-style
1109 64-bit long long arguments and return values to alien functions
1111 * fixed some bugs revealed by Paul Dietz' test suite:
1112 ** the type-error signalled from WARN has a filled-in DATUM slot.
1113 ** the type-error required when a stream is not associated with
1114 a file has the stream as its datum.
1115 ** type-errors on single-floats on x86-64 no longer have
1116 :INVALID-OBJECT as the datum
1117 ** the type-errors signalled for invalid function names now have
1118 a correct expected type
1119 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1120 for structures defined with a :TYPE. Documentation strings for
1121 typed structures are no longer immediately discarded
1122 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1123 broadcast streams and synonym streams. FILE-LENGTH now also works
1124 on broadcast streams.
1126 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1127 * incompatible change: the --noprogrammer option, deprecated since
1128 version 0.7.5, has been removed. Please use the equivalent
1129 --disable-debugger option instead.
1130 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1132 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1133 inoperational for a while now) has been completely removed.
1134 * null lexical environments are now printed as #<NULL-LEXENV>,
1135 significantly reducing the amount of clutter in typical backtraces.
1136 * documentation on weak pointers, finalization, and after GC hooks
1137 has been added to the manual.
1138 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1139 as other specialized array types, is much faster. SUBSEQ and
1140 COPY-SEQ on such arrays have also been sped up.
1141 * optimization: EQL is now more efficient when at least other argument
1142 is known to be of type (OR FIXNUM (NOT NUMBER)).
1143 * fixed bug: the runtime is now less vulnerable to changes in the
1144 size of the SBCL object on OS X, and virtual memory is reserved for
1145 all spaces that need to be at a fixed address.
1146 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1147 * fixed bug: finalizers and after GC hooks that cause consing are now
1149 * fixed bug: compiler error messages and summaries are now printed to
1150 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1151 * fixed inference of the upper bound of an iteration variable.
1152 (reported by Rajat Datta).
1153 * fixed bug 211e: calling local functions with duplicated constant
1154 keyword argument no longer causes a bogus style warning about an
1156 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1157 ftype declaration to be disregarded. (reported by Dave Roberts)
1158 * fixed bug 373: caused by erronous compilation of references to alien
1159 variables in the runtime on ppc/darwin.
1160 * fixed bug 376: CONJUGATE type deriver.
1161 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1162 (reported by Baughn on #lisp)
1163 * a cross-compiler bug on non-x86 platforms has been identified and
1164 fixed. (thanks to Bruno Haible)
1165 * improvements to the MIPS runtime code for increased stability.
1166 (thanks to Thiemo Seufer)
1167 * increased the maximimum compact environment size to allow
1168 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1169 * partial workaround for bug 135: don't name the function we're
1170 calling for hairy cases of EVAL, so as not to accumulate one environment
1171 entry per call to EVAL. (reported by Kevin Reid)
1172 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1173 * optimization: type testing for non-vector arrays should be faster.
1174 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1176 * bug fix: setting 31st element of a bit vector to zero did not work
1178 * bug fix: redefining a class definition which failed due to a
1179 previous accessor / function clash now works (but see BUGS entry
1180 #380 for more problems in this area). (thanks to Zach Beane)
1181 * the long form of DEFINE-METHOD-COMBINATION disables method group
1182 checking when given a single method group with pattern *. (thanks
1184 * on x86 compiler supports stack allocation of results of simple
1185 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1186 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1187 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1188 * fixed some bugs related to Unicode integration:
1189 ** the restarts for recovering from input and output encoding
1190 errors only appear when there is in fact such an error to
1192 * fixed some bugs revealed by Paul Dietz' test suite:
1193 ** MISC.549 and similar: late transformation of unsafe type
1194 assertions into derived types caused unexpected code
1196 ** SCALE-FLOAT type deriver is less wrong.
1197 ** type derivers for EXP, LOG and similar functions compute result
1198 types for complex arguments better.
1199 ** (MISC.563) CONJUGATE type deriver works for very restricted
1201 ** out-of-line type testers for character strings are available.
1202 ** EQUAL compiler transform understands specialness of objects
1204 ** accessing double-floats stored on the stack now works on x86-64.
1205 ** debugger internals could sometimes create invalid lispobjs,
1206 resulting in GC crashes.
1207 ** MISC.548: type check weakening can convert required type into
1209 ** initialization forms for bindings are not in scope of free special
1212 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1213 * incompatible change: thread support for non-NPTL systems has
1214 been removed - locking is buggy and unreliable. A threaded
1215 SBCL build will now warn at startup and refuse to create
1216 new threads, unless futex support is detected in the kernel
1217 * incompatible change: the top level REPL now has only an ABORT
1218 restart associated with it, not TOPLEVEL and ABORT as it used to.
1219 TOP and TOPLEVEL are now available as debugger commands for
1220 returning to the top level.
1221 * incompatible change: forms evaluated in the REPL now use the
1222 global optimization policy.
1223 * incompatible change: user- and system-initialization files are
1224 no longer processed with LOAD, but by READ and EVAL; hence the
1225 global optimization policy, startup package, readtable, etc,
1227 * The .fasl file format number has been incremented because of
1228 various incompatible changes.
1229 * internal entry point details and argument counts no longer appear
1230 in backtraces unless explicitly requested by setting
1231 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1232 * built-in and standard functions no longer have names like "top
1233 level local call to FOO".
1234 * fixed bug 32: functions defined in non-null lexical environments
1235 now have more legible printed representation
1236 * fixed bug 33: functions defined in non-null lexical environemnts
1237 are now more amenable to inspection by INSPECT.
1238 * workaround for bug 354: XEPs no longer appear in backtraces unless
1239 explicitly requested.
1240 * fixed bug: receiving the signal which results from attempting to
1241 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1242 SIGBUS on other *BSDs) on architectures where the C stack is also
1243 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1244 to debugger confusion or wild instability. (reported by Cheuksan
1246 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1247 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1248 (reported by Lutz Euler)
1249 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1250 compiled code. (reported by Paul Dietz)
1251 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1252 specialized parameter to a method to something that is not TYPEP
1253 the specializer is now possible.
1254 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1255 face of package deletion.
1256 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1257 pathname. (reported by David Tolpin on c.l.l)
1258 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1259 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1260 STRING-STREAM and FILE-STREAM, respectively.
1261 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1262 than previously; in addition, its test suite is now run on build.
1263 (thanks to Luke Gorrie)
1264 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1265 * optimization: added a immediate representation for single-floats
1267 * fixed some bugs revealed by Paul Dietz' test suite:
1268 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1269 ** attempting to create a package with a colliding nickname causes
1270 correctable errors to be signalled.
1271 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1272 ** several x86-64 backend bugs related to sign-extension of immediate
1275 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1276 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1277 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1279 * fixed loading of multiply forward-referenced layouts.
1280 (thanks to Cheuksan Wang)
1281 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1282 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1283 (see COMPILE-FILE documentation for details of :PRINT option)
1284 * fixed bugs 19 and 317: fixed-format floating point printing is
1285 more accurate. This also fixes a bug reported by Adam Warner
1286 related to the ~@F format directive.
1287 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1289 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1290 dispatch table if the from-char is a dispatch macro character.
1291 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1292 by the wordsize no longer ignore the last word. (reported by Lutz
1294 * fixed bug in type checking of dynamic-extent variables. (reported
1296 * optimization: sequence traversal functions use their freedom to
1297 coerce function designators to functions.
1298 * optimization: code with many calls to CLOS methods specialized on
1299 CLOS classes has had redundant type checks removed.
1300 * optimization: added declarations to speed up operations that access
1301 the internal character database (for example STRING-UPCASE)
1302 * optimization: comparison operations between floats and sufficiently small
1303 fixnums no longer create extra rationals
1304 * fixed some bugs related to Unicode integration:
1305 ** portions of multibyte characters at the end of buffers for
1306 character-based file input are correctly transferred to the
1307 start of the buffer at the next read.
1308 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1309 passing it through to OPEN.
1310 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1311 argument given to internal calls to OPEN.
1312 ** the built-in comment readers (introduced by character sequences
1313 ";" and "#|") are more forgiving to encoding errors; they will
1314 STYLE-WARN and then attempt to resync the stream at a character
1315 boundary. (thanks to Teemu Kalvas)
1316 * fixed some bugs in the x86-64 port:
1317 ** Negative short int return values from c-calls are sign-extended
1319 ** The stack is aligned to 16-bytes for c-calls, as required by
1320 the ABI. (thanks to Cheuksan Wang)
1321 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1322 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1323 for enums. (thanks to Vincent Arkesteijn)
1324 ** Multiple small optimizations and bugfixes for floating point
1326 * fixed some bugs revealed by Paul Dietz' test suite:
1327 ** Space, Tab, Linefeed, Return and Page have the invalid
1328 secondary constituent character trait.
1329 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1331 ** WITH-INPUT-FROM-STRING should only update the index place on
1333 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1334 works more reliably.
1335 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1336 with one-dimensional arrays with fill pointers.
1337 ** TYPE-OF failed on a complex with an integer realpart and a
1339 ** compiler failure during type inference for the code of form
1340 (IF (EQL X (THE ...)) ...) (MISC.535).
1342 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1343 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1344 platform. The port supports 61-bit fixnums, large memory spaces
1345 and reloading shared object files.
1346 * enhancement: saving cores with foreign code loaded is now
1347 supported on ppc/Darwin in addition to the previously supported
1349 * enhancement: the statistical profiler now walks deeper into the
1350 call stack for more meaningful call-graphs and accrued time
1351 reports (x86/x86-64 only). It also now reports time spent in
1353 * enhancement: it is now possible to trace most individual methods
1354 of a generic function in addition to tracing the generic function
1356 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1358 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1359 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1360 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1361 produces an error. (thanks to Vincent Arkesteijn)
1362 * bug fix: NAMESTRING on pathnames with :WILD components in their
1363 directories works correctly. (thanks to Artem V. Andreev)
1364 * fixed bug 125: compiler preserves identity of closures. (reported
1366 * bug fixed: functions with &REST arguments sometimes failed with
1367 "Undefined function" when compiled with (DEBUG 3). (reported by
1369 * bug fix: overflow during compiling of setting element of a bit
1370 vector with constant index and value. (reported by Timmy Douglas)
1371 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1372 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1373 * on x86 compiler partially supports stack allocation of dynamic-extent
1375 * GO and RETURN-FROM do not check the extent of their exit points
1376 when compiled with SAFETY 0.
1377 * fixed some bugs related to Unicode integration:
1378 ** encoding and decoding errors are now much more robustly
1379 handled; it should now be possible to recover even from invalid
1380 input or output to the terminal. (thanks to Teemu Kalvas)
1381 ** provided a first cut at implementing STRING-TO-OCTETS and
1382 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1383 ** altered the SB-MD5 contributed module slightly, changing the
1384 interface just enough for it to be supportable for builds where
1385 lisp characters are not eight bits.
1386 * fixed some bugs revealed by Paul Dietz' test suite:
1387 ** the FORMATTER-generated functions for ~V[ conditionals require
1388 the correct number of arguments.
1389 ** READ-FROM-STRING returns the mandated second value when applied
1390 to displaced strings.
1391 ** the #\Rubout and #\Backspace characters are treated as invalid
1392 constituent characters by the tokenizer.
1394 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1395 * new feature: reloading changed shared object files with
1396 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1397 * new feature: references to foreign variables and functions
1398 can now be compiled and loaded before the corresponding shared
1399 object file is loaded, as long as the foreign definitions are
1400 available at runtime.
1401 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1402 supported. (thanks to Dan Debertin)
1403 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1404 just keywords. (thanks to Vincent Arkesteijn)
1405 * fixed bug #331: structure-class instances corresponding to
1406 DEFSTRUCT forms are now created eagerly.
1407 * fixed bug #345: backtraces from calls to undefined functions work
1408 on x86 as well. Related bug #61 is now also partially fixed on x86
1409 (backtraces from throws to unknown catch tags.)
1410 * bug fix: lambda-list parsing is now stricter vrt. order and number
1411 of lambda-list keywords.
1412 * bug fix: as specified by AMOP, an error is signalled if a
1413 class-option appears multiple times in a DEFCLASS form. (reported
1415 * bug fix: RANDOM can be compiled when the compiler derives the type
1416 of its numeric argument as a disjoint set of small integers.
1417 (reported by Paul Dietz)
1418 * bug fix: starting a core saved with shared objects loaded when
1419 those objects are not available no longer causes threaded SBCL to
1420 hang. (reported by Sean Ross)
1421 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1423 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1424 argument, which must always be NIL. (reported by Kalle Niemitalo)
1425 * bug fix: printing 1.0d+23 no longer results in an error.
1426 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1427 * bug fix: structure slot setters preserve evaluation order. (thanks
1429 * fixed some bugs related to Unicode integration:
1430 ** RUN-PROGRAM can allow its child to take input from a Lisp
1431 stream. (reported by Stefan Scholl)
1432 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1433 locales. (reported by Ken Causey)
1434 * fixed some bugs revealed by Paul Dietz' test suite:
1435 ** INCF, DECF and REMF evaluate their place form as specified in
1437 ** FORMATTER expands ~{ ~} iteration directives with V or #
1438 parameters correctly.
1439 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1440 consequent uses no arguments correctly.
1441 ** the system has a partial understanding of the (COMPLEX RATIO)
1443 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1446 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1447 * new feature: a build-time option (controlled by the :SB-UNICODE
1448 keyword feature, enabled by default) for building the system with
1449 support for the entire 21-bit character space defined by the
1451 * new feature: the system now has rudimentary external-format
1452 support; the primary user-visible change at this time is that
1453 characters with the high bit set (such as lower-case-e-acute) will
1454 print correctly to a terminal in a UTF-8 environment.
1455 * minor incompatible change: BASE-CHAR no longer names a class;
1456 however, CHARACTER continues to do so, as required by ANSI.
1457 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1458 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1459 has been moved to the SB-EXT package (temporarily re-exported from
1461 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1462 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1464 * fixed bug #351: better error-handlind and reporting for malformed
1466 * fixed bug #350: bignum-printing is now more memory-efficient,
1467 allowing printing of very large bignums, eg. (expt 2 10000000).
1468 (reported by Bruno Haible)
1469 * fixed bug #302: better primitive-type selection for intersection
1471 * fixed bug #308: non-graphic characters now all have names, as
1472 required. (reported by Bruno Haible)
1473 * bug fix: redefining a class with different superclasses now correctly
1474 removes it from the direct-subclasses of its previous superclasses.
1475 (reported by David Morse)
1476 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1477 new value now works. (reported by Bruno Haible)
1478 * bug fix: correct canonicalization of multiple non-standard slot
1479 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1480 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1481 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1482 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1483 now exists, an signals an error.
1484 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1485 during macroexpansion for non-iteration variables as well. (reported
1486 by Bruno Haible for CMUCL)
1487 * bug fix: Cyclic structures and unprintable objects in compiler
1488 messages no longer cause errors. (reported by Bruno Haible)
1489 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1490 and READ-FROM-STRING all now return a primary value of NIL if
1491 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1492 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1493 (reported by Bruno Haible for CMUCL)
1494 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1495 do not designate a condition. (reported by Bruno Haible for
1497 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1498 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1499 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1500 permitting resolution in favour of any of the conflicting symbols.
1501 (reported by Bruno Haible for CMUCL)
1502 * bug fix: EQUAL compiler optimizations is less aggressive on
1503 strings which can potentially compare true despite having distinct
1504 specialized array element types.
1505 * bug fix: unit enumerations can be defined without dividing by
1506 zero. (thanks to Vincent Arkesteijn)
1507 * FORMAT compile-time argument count checking has been enhanced.
1508 (report from Bruno Haible for CMUCL)
1509 * a partial workaround for the bug 262: the compiler does not try to
1510 inline-expand a local function doing RETURN-FROM from a deleted
1511 BLOCK. (thanks to Peter Denno for the bug report and to David
1512 Wragg for the simple test case)
1513 * fixed some bugs revealed by Paul Dietz' test suite:
1514 ** RENAME-PACKAGE allows all package designators as new package
1516 ** constraint propagation and lambda variable substitution are
1517 more cautious in dealing with partially deleted code.
1518 ** compiler sometimes lost reoptimization passes.
1519 ** CERROR, given a condition as condition designator, passes its
1520 remaining arguments to the continue format control without
1522 ** Case-altering FORMAT directives work correctly on non-ASCII
1524 ** The REAL type specifier handles bounds outside the floating
1525 point ranges without signalling FLOATING-POINT-OVERFLOW.
1526 ** Functions with IR1-transformations can create intercomponent
1527 references to global functions.
1528 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1530 ** FORMAT ~R treats a nil value for its first parameter correctly.
1532 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1533 * enhancement: saving cores with foreign code loaded is now
1534 supported on x86/NetBSD and sparc/Linux in addition to the previously
1535 supported platforms.
1536 * bug fix: on some platforms repeated installations caused multiple
1537 copies of HTML documentation to be installed -- should not happen
1538 any more. (reported by Stefan Scholl)
1539 * bug fix: parsing self-recursive alien record types multiple times
1540 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1541 original patch by Helmut Eller for CMUCL)
1542 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1543 (thanks to Richard Kreuter)
1544 * bug fix: defining classes whose accessors are methods on existing
1545 generic functions in other (locked) packages no longer signals
1546 bogus package lock violations. (reported by François-René Rideau)
1547 * bug fix: special variables as DEFMETHOD parameters no longer have
1548 associated bogus type declarations. (reported by David Wragg and
1550 * bug fix: read-write consistency on streams of element-type
1551 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1552 * bug fix: redefiniton of the only method of a generic function with
1553 no DEFGENERIC no longer emits a full WARNING. In addition,
1554 redefinition of generic functions with no DEFGENERIC to an
1555 incompatible lambda list now signals an error. (thanks to Zach
1557 * bug fix: DEFGENERIC now works even when there's a function of the
1558 same name in an enclosing lexical environment. (thanks to Zach
1560 * fixed compiler failure, caused by instrumenting code during
1561 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1562 * optimization: added loop analysis and improved register allocation
1563 * fixed some bugs revealed by Paul Dietz' test suite:
1564 ** POSITION on displaced vectors with non-zero displacement
1565 returns the right answer.
1566 ** (SIMPLE-STRING) is a valid type specifier for sequence
1568 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1570 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1571 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1573 ** The justification version of the FORMAT ~< directive treats
1574 non-zero minpad parameter correctly.
1576 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1577 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1578 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1579 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1580 the supported interface.
1581 * new feature: Single-stepping of code compiled with DEBUG 2 or
1582 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1583 * new feature: saving cores with foreign code loaded is now
1584 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1585 Timothy Moore's work for CMUCL)
1586 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1587 parameters to * instead of NIL if no initform is supplied.
1588 (reported by Johan Bockgaard)
1589 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1590 correctly when FUNCALL appears as the car of the form. Note:
1591 despite this FUNCALL forms are not currently subject to
1592 compiler-macro expansion. (port of Raymond Toy's fix for the
1593 same from CMUCL, reported by Johan Bockgaard)
1594 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1595 (thanks for Teemu Kalvas)
1596 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1597 case instead of terminating the iteration (thanks for Julian
1598 Squires, Sean Champ and Raymond Toy)
1599 * bug fix: incorrect expansion of defgeneric that caused a style
1600 warning. (thanks for Zach Beane)
1601 * bug fix: slot accessor effective method computation works properly
1602 for classes with multiple non-standard applicable methods on
1603 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1604 * on x86 compiler supports stack allocation of results of LIST and
1605 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1606 CMUCL implementation by Gerd Moellmann)
1607 * fixed some bugs revealed by Paul Dietz' test suite:
1608 ** FORMAT strings with both the ~<~:;~> form of the justification
1609 directive and pretty-printing directives cause an error.
1611 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1612 * incompatible change: the internal functions
1613 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1614 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1615 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1616 instead of the old functions.
1617 * new feature: on platforms where "dladdr" is available foreign
1618 function names now appear in backtraces. (based on Helmut Eller's
1620 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1621 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1623 * documentation: ASDF manual is now distributed with SBCL.
1624 * bug fix: SBCL can now load its contributed modules with REQUIRE
1625 even if the system-provided entries have been removed from
1626 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1628 * bug fix: backtraces involving undefined functions or assembly
1629 routines are more informative. (thanks to Brian Downing)
1630 * bug fix: mutually referent alien structures now work correctly.
1631 (reported by Rick Taube)
1632 * bug fix: structures defined by WITH-ALIEN can be referred to
1633 within other definitions in the same WITH-ALIEN.
1634 * bug fix: division operators (MOD, TRUNCATE and the like) with
1635 constant zero divisors and integer dividends no longer generate
1637 * bug fix: provide default methods for INPUT-STREAM-P and
1638 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1639 * bug fix: improve the detection and resolution of MOP metacycles
1640 (where effective method computation depends on the generic function
1641 having its effective method computed). (reported by Bruno Haible)
1642 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1643 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1644 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1645 * bug fix: pathnames with relative directory components can be
1646 represented relative to default pathnames.
1647 * optimization: in taking the GCD of bignums, reduce the two bignums
1648 to approximately the same size (using Euclid's algorithm) before
1649 applying the more sophisticated binary GCD. (thanks to Juho
1651 * optimization: COUNT on bitvectors now operates word-at-a-time.
1652 * optimization: ASH with a positive, but not necessarily constant,
1653 (leftwards) shift, when in a modular context, is compiled to a
1655 * fixed some bugs revealed by Paul Dietz' test suite:
1656 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1657 if the corresponding argument is NIL.
1658 ** FORMAT directives accepting a minpad parameter treat negative
1660 ** literal commas as character parameters to FORMAT directives are
1662 ** literal spaces directly after ~<Newline> directives within a
1663 format-logical-block (~:< ~@:>) do not induce :FILL-style
1664 conditional newlines.
1665 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1666 as specified: it no longer includes conditional newlines).
1667 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1669 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1670 :PER-LINE-PREFIX argument does not evaluate to a string.
1672 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1673 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1674 the manual for details; for now, package locks can be disabled by
1675 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1676 if no major problems are found then it is likely that they will be
1677 compiled in unconditionally.
1678 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1679 unsupported operators on all platforms. To load a shared library
1680 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1681 object file, link it into a shared library outside of SBCL and
1682 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1684 * bug workaround: ROOM T and the GC were not working together
1685 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1686 reporting facility aren't preserved. That reporting has been
1687 disabled, so now until and unless someone figures out how to make it
1688 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1689 * minor incompatible change: as threatened around sbcl-0.8.0, the
1690 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1691 The symbols are also exported from SB-PCL for backwards
1692 compatibility, but more so than before SB-PCL should be treated as
1693 an implementation-internal package.
1694 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1696 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1697 It is known as of this release not to work on the Alpha, however.
1698 * fixed bug #167: errors signalled due to illegal syntax in method
1699 bodies are now more legible.
1700 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1701 designators and can hence be used with TYPEP.
1702 * fixed bug #333: CHECK-TYPE now ensures that the type error
1703 signalled, if any, has the right object to be accessed by
1704 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1705 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1706 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1708 * fixed bug #334: programmatic addition of slots using specialized
1709 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1710 and :ALLOCATION :CLASS slots.
1711 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1712 float exponents. (rereported by Peter Seibel)
1713 * fixed a bug: #\Space (and other whitespace characters) are no
1714 longer considered to be macro characters in standard syntax by
1715 GET-MACRO-CHARACTER.
1716 * fixed bug: initialization of condition class metaobjects no longer
1717 causes an instance of the condition to be created. (reported by
1719 * fixed bug: it is now possible to have slots such that
1720 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1721 description is neither :INSTANCE nor :CLASS.
1722 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1723 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1724 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1725 non-standard SLOT-DEFINITION-ALLOCATION values.
1726 * fixed bugs: various race conditions handling exiting threads.
1727 CL-PPCRE's thread torture test now passes.
1728 * fixed arguably-a-bug: GC time proportional to number of threads in
1729 system even when most of them are idle
1730 * optimization: improved performance of BIT and SBIT on bit-vectors.
1731 * .fasl file incompatibility: The fasl file version number has
1732 been incremented because of changes associated with package locks.
1734 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1735 * minor incompatible change: the system no longer provides
1736 optimization hints (conditions which are TYPEP
1737 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1738 mode; these hints are still emitted when higher SPEED optimization
1740 * new contrib module: a sampling profiler (profiling by statistical
1741 sampling, rather than by instrumenting functions) is available as
1742 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1743 * the behaviour of the standard function ED is now customizeable by
1744 third parties through a hook variable: see ED's documentation
1745 string for information on the protocol.
1746 * the compiler no longer emits efficiency notes for (FUNCALL X)
1747 when the type of X is uncertain under default optimization
1749 * fixed bug 276: mutating a binding of a specialized parameter to a
1750 method to something that is not TYPEP the specializer is now
1752 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1753 exhibit the required behaviour on the x86 platform. (thanks to
1754 Peter van Eynde, Eric Marsden and Bruno Haible)
1755 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1756 even for difficult arguments. (reported by Peter Graves)
1757 * fixed bug 141a: the backquote printer now descends quoted
1759 * fixed another bug in backquote printing: no more destructive
1760 modification of the form's list structure. (reported by Brian
1762 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1763 move between its address being taken and the call to
1764 interrupt_thread, fixing a crashing race condition.
1765 * the SB-POSIX contrib implementation has been adjusted so that it
1766 no longer exhibits ridiculously poor performance when constructing
1767 instances corresponding to C structs.
1769 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1770 * minor incompatible change: the sb-grovel contrib now treats C
1771 structures as alien (in the sense of SB-ALIEN) objects rather than
1772 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1773 has implications for memory management of client code
1774 (sb-grovel-returned objects must now be manually managed) and for
1775 type safety (alien objects now have full types).
1776 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1777 used to control emission of compiler diagnostics, rather than the
1778 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1779 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1780 quality should be considered deprecated.
1781 * install.sh now installs the user manual as well
1782 * (not quite a new documentable feature, but worth considering in
1783 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1784 beginnings of a semantically meaningful condition hierarchy is
1785 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1787 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1788 designator as the defaults argument.
1789 * fixed bug: Displaced arrays whose displaced-to array has become
1790 too small now cause ARRAY-DIMENSION to signal an error, providing
1791 for safer bounds-checking. (reported by Bruno Haible)
1792 * fixed bug: DEFCLASS slot definitions with identical :READER and
1793 :WRITER names now signal a reasonable error. (reported by Thomas
1795 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1797 * fixed bug: Invalid slot specification errors now print correctly.
1798 (thanks to Zach Beane)
1799 * fixed bug 320: Shared to local slot value transfers in class
1800 redefinitions now happen corrently from superclasses as
1801 well. (reported by Bruno Haible)
1802 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1804 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1805 improper lists correctly. (reported by Bruno Haible)
1806 * fixed bug 313: source-transform for <fun-name> was erroneously
1807 applied to a call of a value of a variable with name <fun-name>.
1808 (reported by Antonio Menezes Leitao)
1809 * fixed bug 307: The obsolete instance protocol ensures that
1810 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1811 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1812 remove dead unknown-values globs from the middle of the stack.
1813 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1814 easier to resume long computations after using *BREAK-ON-SIGNALS*
1815 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1816 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1817 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1818 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1819 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1820 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1822 * fixed a (fairly theoretical) bug in string printing: if
1823 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1824 does not have array-element-type equal to the most general string
1826 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1827 function name. (thanks to Nikodemus Siivola)
1828 * fixed bug: compile-time format string checker failed on
1829 non-closed ~{. (reported by Thomas F Burdick)
1830 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1831 don't warn on legal loop code involving more than one aggregate
1832 boolean. (thanks to Nikodemus Siivola)
1833 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1834 in keyword position to MAKE-PACKAGE was not being reported as
1836 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1837 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1839 * fixed bugs 280 and 312: the checking for multiple definitions in a
1840 file is less likely to become confused by uses of inline
1842 * fixed bug: the #S reader macro performs the keyword coercion
1843 specified for slot names. (reported by Kalle Niemitalo)
1844 * fixed bug: lambda lists may contain symbols whose names start with
1845 & but are not lambda-list-keywords; their occurrence triggers a
1847 * fixed bug 321: define-method-combination argument lambda lists do
1848 not cause invalid code to be generated when &optional or &aux
1849 variables have default values. (reported by Bruno Haible)
1850 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1851 have CLOS classes; this appears also to have fixed reported
1852 instability in stack exhaustion detection.
1853 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1854 MUFFLE-WARNING when no associated restart is present is now
1856 * optimization: rearranged the expansion of various defining macros
1857 so that each expands into only one top-level form in a
1858 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1860 * optimization: used a previously little-used slot in symbols to
1861 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1863 * fixed some bugs revealed by Paul Dietz' test suite:
1864 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1866 ** Fixed an optimization bug related to inheritance of initforms
1867 from local to shared slots.
1868 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1869 ** CAST optimizer forgot to flush argument derived type.
1870 ** print/read consistency on floats is now orders of magnitude
1871 more likely. (thanks also to Bruno Haible for a similar report
1873 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1874 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1875 for objects of type REAL. Make it so.
1876 ** SXHASH is specified (infelicitously) to respect similarity,
1877 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1878 it so. (thanks to Markus Ziegler)
1879 ** on the Alpha, the compiler succeeds in compiling functions
1880 returning a known number of arguments greater than 63.
1881 ** fixed handling of invalid NIL arguments in keyword position
1883 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1885 ** provided a readably-printable representation for RANDOM-STATE
1887 ** ensured that pathnames, where they have a namestring, always
1888 print using #P"..." syntax.
1890 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1891 * Support for the forthcoming 2.0 version of the NetBSD kernel
1892 running on x86 hardware has been added. (thanks to Perry
1893 E. Metzger most immediately, and others for their past work)
1894 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1895 current release version; SBCL's OpenBSD support had been broken
1896 since about the time of OpenBSD's switch to ELF binary format.)
1897 * [placeholder for DX summary]
1898 ** user code with &REST lists declared dynamic-extent, under high
1899 speed or space and low safety and debug optimization policy.
1900 * The manual has been converted to Texinfo format and the debugger
1901 chapter from the cmucl manual has been added.
1902 * A facility has been added to extract documentation strings from
1903 sbcl and store them as Texinfo-formatted snippets for inclusion in
1904 the manual (via Texinfo's @include directive)
1905 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1906 the test case to Dave Roberts)
1907 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1908 pointers. (reported by Sean Ross)
1909 * bug fix: PROFILE output is printed nicely even for large numerical
1910 values. (thanks to Zach Beane)
1911 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1912 greater than 32 handle EOF correctly.
1913 * bug fix: on X86 an immediate argument of the IMUL instruction is
1914 correctly printed in disassembly. (thanks to Lutz Euler)
1915 * bug fix: class slots in redefined classes preserve their old
1916 values. (thanks to Bruno Haible and Nikodemus Siivola)
1917 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1918 succeeds. (reported by Marco Baringer)
1919 * fixed some bugs revealed by Paul Dietz' test suite:
1920 ** READ-SEQUENCE now works on ECHO-STREAMs.
1921 ** RATIONALIZE works more according to its specification. (thanks
1924 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1925 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1926 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1927 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1928 should matter to you only if you rebind the printer control
1929 variables and then find you want different bindings in the
1930 debugger than in the ordinary execution of your program.)
1931 * The runtime build system has been tweaked to support building
1932 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1933 assembler and linker. (thanks to Nikodemus Siivola)
1934 * Unbound, undefined, undeclared variables now trigger full
1935 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1936 more often programmer error than deliberate exploitation of undefined
1938 * optimization: the hash algorithm for strings has changed to one
1939 that is less vulnerable to spurious collisions. (thanks to Juho
1941 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1942 needless bounds checking. (thanks to Juho Snellman)
1943 * optimization: implemented multiplication as a modular
1944 (UNSIGNED-BYTE 32) operation on the PPC backend.
1945 * fixed some bugs revealed by Paul Dietz' test suite:
1946 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1948 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1949 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1950 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1952 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1954 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1956 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1957 their output stream on EOF from read.
1958 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1959 have been read to end-of-file.
1960 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1962 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1963 description of determination of which consecutive characters
1965 ** Printing the "Space" character with escaping on now yields "#\\ ",
1966 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1967 ** Reading floating-point numbers with *READ-BASE* set to a number
1968 less than 10 works correctly.
1969 ** Reading floating-point numbers with *READ-BASE* set to a number
1970 more than 10 works correctly.
1971 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1972 the readtable currently in effect.
1974 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1975 * minor incompatible change: parsing of namestrings on a physical
1976 (Unix) host has changed; numbers after the final #\. in a
1977 namestring are no longer interpreted as a version field. This is
1978 intented to be largely invisible to the user, except that the
1979 meaning of the namestring "*.*.*" has changed: it now refers to a
1980 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1981 should usually be replaced by
1982 (make-pathname :name :wild :type :wild :version :wild)
1983 with the added benefit that this is more likely to be portable.
1984 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1985 option to OPEN now signals an error if the file being opened
1986 exists; this may have an impact on existing code.
1987 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1988 signals received, on the PowerPC platforms (both Linux and
1989 Darwin). (thanks to Pierre Mai for pointing out the location of
1991 * several fixes on OS X: The system now builds and runs cleanly on
1992 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1993 (thanks to Brian Mastenbrook)
1994 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1995 second-resolution: integer multiples of 1/3600 between -24 and 24.
1996 (thanks to Vincent Arkesteijn)
1997 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1998 type when called with 1 argument; PEEK-CHAR checked type of
1999 PEEK-TYPE only after having read first character from a
2000 stream. (reported by Peter Graves)
2001 * bug fix: the garbage collector now has much better locality
2002 behaviour, and in particular no longer treats all memory as being
2003 exhausted when many small objects point to each other in a deeply
2005 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2006 recognized as being TYPEP their class.
2007 * bug fix: the PUSHNEW documentation string has been corrected.
2008 (thanks to Vincent Arkesteijn)
2009 * bug fix: defaulting of the value for the last of an atypically
2010 large number of multiple values being bound was not being
2011 performed correctly on the Alpha or PPC platforms
2012 * optimization: implemented multiplication as a modular
2013 (UNSIGNED-BYTE 32) operation on the x86 backend.
2014 * optimization: SEARCH on simple-base-strings can now be open-coded.
2015 (see also contrib/compiler-extras.lisp for inspiration for
2016 teaching the compiler about the Boyer-Moore algorithm).
2017 * value, returned by MAX (and MIN) called with several EQUALP, but
2018 not EQL, arguments now does not depend on compiler settings.
2019 * fixed some bugs revealed by Paul Dietz' test suite:
2020 ** in stack analysis liveness information is propagated from
2021 non-local entry points.
2022 ** pathwise CAST removing failed when the CAST node did not start
2024 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2025 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2027 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2028 host is already defined.
2029 ** RENAME-FILE works on streams instead of signalling an internal
2031 ** PEEK-CHAR uses the current readtable when determining whether
2032 or not a character is whitespace.
2033 ** MERGE-PATHNAMES handles the case when the pathname does not
2034 specify a name while the default-pathname specifies a version.
2035 ** Pathnames now stand a better chance of respecting print/read
2037 ** Attempting to use standardized file system operators with a
2038 pathname with invalid :DIRECTORY components signals a
2040 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2042 ** DIRECTORY on logical pathnames is more correct.
2043 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2044 signal a TYPE-ERROR if their argument is not a stream.
2045 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2046 designator argument does not designate a stream.
2047 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2048 examining the synonym.
2049 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2051 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2052 element-type larger than ([UN]SIGNED-BYTE 32).
2054 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2055 * When built with the :SB-FUTEX feature, threaded builds now take
2056 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2057 for faster/more reliable mutex and condition variable support.
2058 * Incompatible change (but one you probably shouldn't have been using
2059 anyway): the interface and code for arbitrating between multiple
2060 threads in the same user session has been redesigned.
2061 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2062 error when called without an explicit environment argument.
2063 (thanks to Nikodemus Siivola)
2064 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2065 confused about their position. (thanks to Adam Warner and Gerd
2067 * bug fix: Pretty printing backquoted forms with unquotations in the
2068 argument list position of various code constructs such as LAMBDA
2069 now works correctly. (reported by Paul Dietz)
2070 * bug fix: Pretty printing unquotations no longer loses all
2071 stream position information.
2072 * optimization: performance of string output streams is now less
2073 poor for multiple small sequence writes.
2074 * optimization: performance of CSUBTYPEP in the presence of complex
2075 expressions involving CONS and NOT many times has been improved.
2076 (reported by Paul Dietz)
2077 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2079 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2080 streams for the REPL, for the debugger, and so on. (thanks to
2082 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2083 * fixed some bugs revealed by Paul Dietz' test suite:
2084 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2085 is ignored if it is too small, rather than propagating through
2086 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2087 ** extremely complex negations of CONS types were not being
2088 sufficiently canonicalized, leading to inconsistencies in
2090 ** VALUES tranformer lost derived type.
2092 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2093 * fixed a bootstrapping bug: the build process no longer assumes
2094 that the various BOOLE-related constants have the same value in
2095 host and target lisps. (noted by Paul Dietz' test suite on an
2096 SBCL binary built from CLISP)
2097 * The system can now be dynamically linked on the MIPS platform,
2098 which enables dynamic loading of foreign code from Lisp. (thanks
2099 to Ralf Baechle for discussions on the MIPS ABI)
2100 * The system now records debugging information for its own source
2101 files in a filesystem-position-independent manner, relative to
2102 the "SYS" logical host.
2103 * fixed a compiler bug: MV-LET convertion did not check references
2104 to the "max args" entry point. (reported by Brian Downing)
2105 * tweaked disassembly notes to be less confident about proclaiming
2106 some instruction as an LRA. (thanks to Brian Downing)
2107 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2108 now each have their own history, command character, and other
2109 characteristics. (thanks to David Lichteblau)
2110 * fixed some bugs revealed by Paul Dietz' test suite:
2111 ** compiler failure in compiling LOGAND expressions including a
2113 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2114 shift greater than 32.
2115 ** FLUSH-DEST did not mark blocks for type check regeneration.
2116 ** HANDLER-CASE failed to accept declarations in handler clauses
2117 in some circumstances.
2119 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2120 * New code in contrib/sb-introspect (still probably not entirely
2121 stable yet) provides some support for smart Lisp development
2122 environments like SLIME.
2123 * The conditions signalled for errors occurring when loading .fasl
2124 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2125 in a way which should help ASDF recover gracefully.
2126 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2127 stuff has been cleaned up. If you code contrib/ stuff, this might
2128 affect you, and you can look at contrib/README, contrib/STANDARDS,
2129 and/or the 0.8.4.27 diff to check.
2130 * In full calls the compiler now does not generate checks for declared
2131 argument types for all arguments.
2132 * various threading fixes
2133 ** and some experimental patches which didn't make it into
2134 the main tree for this release, but which are shipped in
2135 contrib/experimental-thread.patch as a possible fix for some
2136 failures (deadlock, spinning...) in GC-intensive multithreaded
2138 * fixed PPC build problem (source code incompatibility of different
2139 library versions): added offsetof() hackery which attempts to divine
2140 where glibc maintainers put uc_mcontext today
2141 * fixed bug 282: compiler does not trust type assertions while passing
2142 arguments to a full call.
2143 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2144 &OPTIONAL VALUES type parameter.
2145 * fix bug 214: algorithm for noting rejected templates is now more
2146 similar to that of template seletion. (also reported by rydis on
2148 * fixed bug 141b: printing backquoted information readably and prettily
2149 inserts a space where necessary.
2150 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2151 (CHARACTER 10) are now reported as errors, rather than propagated
2152 as unknown types. (reported by piso on #lisp)
2153 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2154 with values NIL and :ERROR. (thanks to Milan Zamazal)
2155 * fixed bug 191c: CLOS now does proper keyword argument checking as
2156 described in CLHS 7.6.5 and 7.6.5.1.
2157 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2158 longer raise an error; further, using a list as a for-as-arithmetic
2159 counter now raises a meaningful error.
2160 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2161 now understood by sequence creation functions such as MAKE-SEQUENCE
2163 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2164 a STRING-INPUT-STREAM.
2165 * compiler enhancement: SIGNUM is now better able to derive the type
2167 * type declarations inside WITH-SLOTS are checked. (reported by
2169 * fixed some bugs revealed by Paul Dietz' test suite:
2170 ** incorrect optimization of TRUNCATE for a positive first
2171 argument and negative second.
2172 ** compiler failure in let-convertion during flushing dead code.
2173 ** compiler failure while deriving type of TRUNCATE on an
2174 interval, containing 0.
2175 ** ASH of a negative bignum by a negative bignum count now returns
2177 ** intersection of CONS types now canonicalizes properly, fixing
2178 inconsistencies in SUBTYPEP.
2180 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2181 * incompatible change: The --disable-debugger command line
2182 option now clobbers the debugger at a more fundamental
2183 level, by redefining #'INVOKE-DEBUGGER instead of by
2184 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2185 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2186 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2187 enter the debugger REPL and then suffer recursive errors
2188 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2189 while under the new system, BREAK in --disable-debugger mode
2190 terminates the system just as an unhandled error would.
2191 * fixed compiler performance when processing loops with a step >1;
2192 * bug fix: DOCUMENTATION now retrieves generic function
2193 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2194 support has been systematized, and now supports the methods
2195 specified by ANSI, along with a default method and a method for
2196 slot documentation. (reported by Nathan Froyd)
2197 * bug fix: effective methods associated with a generic function are
2198 no longer cached over a change of that generic function's method
2199 combination. (reported by Andreas Fuchs)
2200 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2201 names a non-existent directory. (thanks to Andreas Fuchs)
2202 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2203 the PPC platform, lead to stack corruption; this has been fixed.
2204 (reported by Rainer Joswig)
2205 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2206 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2207 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2208 arithmetic in general, is now much more reliable on the PPC
2210 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2211 platform now returns the right answer.
2212 * optimization: restored some effective method precomputation in
2213 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2214 precomputation is now tunable.
2215 * optimization: compiler-internal data structure use has been
2216 reviewed, and changes have been made that should improve the
2217 performance of the compiler by about 20%.
2218 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2219 simple-base-strings and simple-bit-vectors is improved.
2220 * optimization: the optimization of 32-bit logical and arithmetic
2221 functions introduced in version 0.8.3 on the x86 has been
2222 implemented on the mips, ppc and sparc platforms; an
2223 implementation of the same facility, but for 64-bit arithmetic,
2224 has been added for the alpha.
2225 * microoptimization: the compiler is better able to make use of the
2226 x86 LEA instruction for multiplication by constants.
2227 * bug fix: in some situations compiler did not report usage of
2228 generic arithmetic in (SPEED 3) policy.
2229 * bug 145b fix: compiler used wrong type specifier while converting
2230 MEMBER-types to numeric.
2231 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2233 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2234 index argument now works properly on the Alpha platform.
2235 * bug fix: floating point exception treatment on the Alpha platform
2237 * bug fix: FILE-POSITION works much better on string input and
2238 output streams. (thanks to Nikodemus Siivola)
2239 * bug fix: many threading/garbage collection symptoms sorted.
2240 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2241 might be pseudo-atomic.
2242 * internal change: Stopping for GC is now done with signals not
2243 ptrace. GC is now done in whichever thread wanted it, instead of
2245 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2247 * bug fix: result form in DO is not contained in the implicit
2249 * incompatible change: ICR structure is changed; the value part of
2250 CONTINUATION is now called LVAR; corresponding functions are
2251 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2252 * added type deriver for ISQRT (thanks to Robert E. Brown).
2253 * bug fix: better support for loading from the command line when an
2254 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2256 * fixed some bugs revealed by Paul Dietz' test suite:
2257 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2258 ** ROUND and FROUND now give the right answer when given very
2259 small float arguments.
2260 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2262 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2263 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2264 ** LCM should return a non-negative integer.
2265 ** PARSE-INTEGER returned the index of a terminator instead of the
2266 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2267 ** PARSE-INTEGER returned an incorrect index being applied to a
2269 ** LCM with two arguments of 0 returns 0 rather than signalling
2271 ** unsigned addition of a 32-bit constant with the high bit set no
2272 longer causes an internal compiler error on the x86.
2273 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2274 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2275 with negative last argument.
2276 ** byte specifiers with zero size and position no longer cause
2277 an error during type derivation.
2278 ** bignum multiplication on the Alpha platform now returns the
2280 * porting: The system now builds on SuSE AMD64, although it still
2281 generates a 32-bit binary.
2282 * .fasl file incompatibility: The fasl file version number has
2283 been incremented (because of the changes to internal compiler
2284 data structures referred to above).
2286 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2287 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2288 more accurately, on the Darwin kernel running on PowerPC hardware.
2289 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2290 * Compiler code deletion notes now signal a condition of type
2291 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2292 an associated MUFFLE-WARNING restart.
2293 * The compiler now performs limited argument count validation of
2294 constant format strings in FORMAT, and where appropriate in ERROR,
2295 CERROR and WARN. (thanks to Gerd Moellmann)
2296 * New ASDF-INSTALL contrib can be used for automatic download and
2297 installation of third-party Lisp code from CCLAN or other sites
2299 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2300 which forces another thread to execute a function supplied by the
2302 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2303 now accept and act upon their :ELEMENT-TYPE keyword argument.
2304 (reported by Martin Atzmueller, Edi Weitz)
2305 * bug fix: FILE-POSITION now accepts position designators up to
2306 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2307 is the greater. (thanks to Patrik Nordebo)
2308 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2309 Kalle Olavi Niemitalo)
2310 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2311 printable. (reported by Eric Marsden)
2312 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2313 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2314 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2315 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2316 (thanks to Stig Sandoe)
2317 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2318 UNREAD-CHAR now correctly includes the unread character in the
2319 target sequence. (thanks to Gerd Moellmann)
2320 * bug fix in threaded builds: the system can now be suspended and
2321 resumed by shell job control with minimal disruption.
2322 * bug fixes in times and timezones >2038AD
2323 * better handling of "where is GNU make?" problem in build scripts
2324 (thanks to Nikodemus Siivola)
2325 * new optimization: inside a named function any reference to a
2326 function with the same name is considered to be a self-reference;
2327 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2328 optimization quality.
2329 * new optimization on x86: logical functions and + now have
2330 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2331 used when the result is truncated to 32 bits.
2332 * VALUES declaration is partially enabled.
2333 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2334 * fixed some bugs revealed by Paul Dietz' test suite:
2335 ** The system now obeys the constraint imposed by
2336 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2337 types form a lattice under type intersection.
2338 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2339 ** ASSOC now ignores NIL elements in an alist.
2340 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2341 and (1+ MOST-POSITIVE-FIXNUM) answers.
2342 ** The addition of a method with invalid qualifiers to a generic
2343 function does not cause an error to be signalled immediately;
2344 a warning is signalled, and the error is generated only on
2345 calling the generic function.
2346 * changed .fasl file version number, in part to add type codes for
2347 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2348 obscure ANSI requirements
2350 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2351 * fixed bug 148: failure to inline-expand a local function left
2352 garbage, confusing the compiler.
2353 * fixed bugs 3cd: structure slot readers perform type check if the
2354 slot can have an invalid value (i.e. it is either not initialized
2355 or can be written with a less specific slot writer).
2356 * bug fix: the compiler now traps array references to elements off
2357 the end of an array; previously, the bounds checking in some
2358 circumstances could go off-by-one.
2359 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2361 * type declarations for array element types now obey the description
2362 on the CLHS page "Declaration TYPE", as per discussions on
2363 sbcl-help around 2003-05-08. This means that a declaration
2364 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2365 declaration, all references to BAR will be asserted or assumed
2366 (with THE, so dependent on compiler policy) to involve objects of
2367 type FOO. Note that no such declaration is implied in
2368 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2369 * declared types of functions from the "Conditions"
2370 chapter. (reported by Paul Dietz)
2371 * bug fix: CERROR accepts a function as its first argument.
2372 * bug fix: NTH an NTHCDR accept a bignum as index
2373 arguments. (reported by Adam Warner)
2374 * optimization: character compare routines now optimize comparing
2375 against a constant character. (reported by Gilbert Baumann)
2376 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2377 argument now works properly on the MIPS platform.
2378 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2379 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2380 declared to have a functional type, does not cause an error
2382 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2383 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2384 * fixed bug: if last continuation of a deleted block has a
2385 destination, this destination should be deleted too. (reported by
2387 * fixed a bug in the bootstrap process: the host compiler's values
2388 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2389 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2390 test case from Patrik Nordebo)
2391 * improved the ability of the disassembler on the PPC platform to
2392 provide helpful disassembly notes.
2393 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2394 the class in more cases than previously.
2395 * bug fix: FILE-POSITION now understands :START and :END for
2396 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2397 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2398 8) data. (thanks to David Lichteblau)
2399 * bug fix: it is possible to add a method to a generic function
2400 without lambda list.
2401 * bug fix: reader failed to signal END-OF-FILE inside an
2402 object representation. (reported by Nikodemus Siivola)
2403 * fixed some bugs revealed by Paul Dietz' test suite:
2404 ** LAST and [N]BUTLAST should accept a bignum.
2405 ** condition slot accessors are methods.
2406 ** (VECTOR NIL) is a subtype of STRING.
2408 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2409 * minor incompatible change: some nonsensical specialized lambda
2410 lists (used in DEFMETHOD) which were previously ignored now signal
2412 * minor incompatible change: the system is now aware of the types of
2413 variables in the COMMON-LISP package, and will signal errors for
2414 most violations of these type constraints (where previously they
2415 were silently accepted).
2416 * minor incompatible change: COMPILE-FILE now uses the freedom
2417 afforded (ANSI 3.2.2.3) to use derived function types for
2418 functions defined in the same file. This also permits the system
2419 to warn on static type mismatches and function
2420 redefinition. (Currently it does not work with high DEBUG level.)
2421 * minor incompatible change: VALUES declaration is disabled.
2422 * When issuing notes, the compiler now signals a condition of type
2423 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2424 restart for use in user handlers. It is expected that the
2425 COMPILER-NOTE condition will eventually become a condition
2426 supertype to a hierarchy of note types, which will then be
2427 handleable in a similar fashion. However, at the moment, no such
2428 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2429 but it's an implementation detail, not a classification for the
2431 * Changes in type checking closed the following bugs:
2432 ** type checking of unused values (192b, 194d, 203);
2433 ** template selection based on unsafe type assertions (192c, 236);
2434 ** type checking in branches (194bc).
2435 * A short form of VALUES type specifier has ANSI meaning (it has
2436 increased the number of situations when SBCL cannot perform type
2438 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2439 keywords or constants is permissible.
2440 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2441 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2442 classes. (thanks to Antonio Martinez)
2443 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2444 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2445 argument to a pretty-print stream. Instead, it leaves any such
2446 operations to DESCRIBE-OBJECT methods.
2447 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2449 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2450 lambda lists. (thanks to David Lichteblau)
2451 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2452 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2453 (thanks to Gerd Moellmann)
2454 * fixed bug 246: increased compilation speed of long
2455 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2457 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2459 * DEFCONSTANT now throws a condition of type
2460 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2461 constant to a non-EQL value; CONTINUE and ABORT restarts
2462 respectively change and preserve the value.
2463 * fixed bug 63: The code walker, part of the implementation of CLOS,
2464 is now better at handling symbol macros.
2465 * bug fix: There is no longer an internal implementation type named
2466 CL:LENGTH. (reported by Raymond Toy)
2467 * bug fix: In macro-like defining macros/special operators the
2468 implicit block does not enclose the lambda list.
2469 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2470 enclosed in parentheses) are not suitable as type specifiers, and
2471 their use properly signals an error now.
2472 * bug fix: An argument count mismatch for a type specifier in code
2473 being compiled no longer causes an unhandled error at compile
2474 time, but signals a compile-time warning.
2475 * fixed simple vector readable printing
2476 * bug fix: DESCRIBE takes more care over whether the class
2477 precedence list slot of a class is bound before accessing it.
2478 (reported by Markus Krummenacker)
2479 * bug fix: FORMATTER can successfully compile pretty-printer format
2480 strings which use variants of the ~* directive inside.
2481 * bug fix: SEARCH now applies its TEST predicate to the elements of
2482 the arguments in the correct order. (thanks to Wolfhard Buss)
2483 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2484 in type inference. (thanks to Robert E. Brown)
2485 * bug fix: Reading in symbols with an explicit package name of ""
2486 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2487 * fixed some bugs revealed by Paul Dietz' test suite:
2488 ** NIL is now allowed as a structure slot name.
2489 ** Arbitrary numbers, not just REALs, are allowed in certain
2490 circumstances in LOOP for-as-arithmetic clauses.
2491 ** Multiple class redefinitions before slot access no longer
2492 causes a type error.
2493 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2494 association between the name and a class.
2495 ** Generic functions with non-standard method-combination and over
2496 five methods all of which return constants no longer return NIL
2497 after the first few invocations. (thanks to Gerd Moellmann)
2498 ** CALL-NEXT-METHOD with no arguments now passes the original
2499 values of the arguments, even in the presence of assignment.
2500 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2502 ** DISASSEMBLE works with closures and funcallable instances.
2503 ** ADD-METHOD now returns the generic function, not the new method.
2504 ** FIND-METHOD signals an error if the lengths of the specializers
2505 is incompatible with the generic function, even if the ERRORP
2507 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2508 which its argument is a member.
2509 ** DEFCLASS only redefines the class named by its class-name
2510 argument if that name is the proper name of the class;
2511 otherwise, it creates a new class.
2512 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2513 of the UNBOUND-SLOT condition to the name of the slot.
2514 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2515 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2516 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2517 SLOT-MAKUNBOUND in the specified fashion.
2519 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2520 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2521 cross-compilation host. As a consequence, we can now bootstrap our
2522 way up to SBCL starting with a bare gcc toolchain and human-readable
2523 source code (first the source to CLISP, then the source to SBCL).
2524 * A contributed module containing a partial implementation of the
2525 simple-streams interface has been included. (thanks to Rudi
2527 * A contributed module implementing the RFC1321 Message Digest
2528 Algorithm, known as MD5, has been included.
2529 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2530 no longer has any effect, as the code controlled by this feature
2531 has been deleted. (As far as we know, no-one has ever built using
2532 this feature, and its semantics were confused in any case).
2533 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2534 work on conditions (as required by the ANSI specification),
2535 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2536 expected behaviour on conditions. Users should note, however,
2537 that such behaviour is not required by the ANSI specification,
2538 and so use of this behaviour may render their code unportable.
2539 * fixed some bugs revealed by Paul Dietz' test suite:
2540 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2542 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2543 ** SXHASH on condition objects no longer returns NIL.
2544 ** :ALLOCATION :CLASS slots are better treated; their values are
2545 updated on class redefinition, and initforms inherited from
2546 superclasses are applied.
2547 ** REMOVE-METHOD returns its generic function argument even when
2548 no method was removed.
2549 ** SHARED-INITIALIZE now initializes the values of the requested
2550 slots, including those with :ALLOCATION :CLASS.
2551 ** ALLOCATE-INSTANCE now works on structure classes defined via
2552 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2554 ** SLOT-EXISTS-P now works on conditions, as well as structures
2556 ** MAKE-LOAD-FORM now has the required methods on
2557 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2558 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2559 keyword, and now implements the SLOT-NAMES argument.
2560 ** methods with &OPTIONAL arguments no longer allow too many
2561 arguments to be passed in the call without error.
2562 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2563 option is consistent with the required arguments of the generic
2564 function lambda list.
2565 * bug fix: REQUIRE accepts a string designator. (Thanks to
2567 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2568 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2569 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2570 * bug fix: The compiler now checks for duplicated variables in macro
2572 * bug fix: SETQ on globals returns the correct value.
2573 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2574 not a COMPILER-ERROR (followed by some other strange error on
2575 choosing the CONTINUE restart).
2576 * bug fix: make.sh and friends are now more consistent in the way that
2577 they look for GNU "make".
2579 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2580 * experimental native threads support (on x86 Linux >=2.4 only).
2581 This is not compiled in by default: you need to add :SB-THREAD to
2582 the target features. See the "Beyond ANSI" chapter of the manual
2584 * fix for longstanding nonANSIism: The old distinction between
2585 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2586 The return value from CL:FIND-CLASS is now a CLOS class, and
2587 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2588 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2589 * An interface to the MetaObject Protocol, as described in Kiczales,
2590 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2591 MIT Press, 1991, is available from the SB-MOP package.
2592 * incompatible change: the SB-PCL package should now be considered
2593 a private implementation detail, and no longer a semi-private MOP
2595 * minor incompatible change: due to rearrangement for threads, the
2596 control stack and binding stack are now allocated at arbitrary
2597 addresses instead of being hardcoded per-port. Users affected by
2598 this probably have to be doing advanced things with shared
2599 libraries, and will know who they are.
2600 * minor incompatible change: Previously, all --eval forms used were
2601 processed with READ before any of them were processed with EVAL.
2602 Now each --eval form is processed with both READ and EVAL before
2603 the next --eval form is processed. (Thus package operations like
2604 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2605 work as the user might reasonably expect.)
2606 * minor incompatible change: *STANDARD-INPUT* is now only an
2607 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2609 * minor incompatible change: Y-OR-N-P is now character-oriented,
2610 not line oriented. Also, YES-OR-NO-P now works without errors.
2611 (thanks to Antonio Martinez)
2612 * sb-aclrepl module improvements: an integrated inspector, added
2613 repl features, and a bug fix to :trace command.
2614 * Known functions, which cannot be open coded by the backend, are
2615 considered to be able to check types of their arguments. (fixing
2616 a bug report by Nathan J. Froyd)
2617 * fixed a bug in computing method discriminating functions: It is
2618 now possible to define methods specialized on classes which have
2619 forward-referenced superclasses. (thanks to Gerd Moellmann)
2620 * fixed evaluation order in optional entries (reported by Gilbert
2622 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2623 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2624 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2625 required-by-AMOP NAME argument, as well as CLASS and
2626 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2627 * fixed bug 20: DEFMETHOD can define methods using names that are
2628 not the proper names of classes to designate class specializers.
2629 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2630 Unix file descriptors, instead of blowing up. (thanks to Antonio
2632 * Garbage collection refactoring: user-visible change is that a
2633 call to the GC function during WITHOUT-GCING will not do garbage
2634 collection until the end of the WITHOUT-GCING. If you were doing
2635 this you were probably losing anyway.
2636 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2637 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2638 TYPEP the latter but not the former.
2639 * The compiler issues a full WARNING for calls to undefined functions
2640 with names from the CL package.
2641 * MAP-INTO for a vector destination is open coded. (reported by
2642 Brian Downing on c.l.l)
2643 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2644 documentation string.
2645 * fixed some bugs revealed by Paul Dietz' test suite:
2646 ** COPY-ALIST now signals an error if its argument is a dotted
2648 ** Condition slots are now accessed more correctly in the presence
2649 of multiple initargs for a given slot.
2650 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2651 exclude restarts of the same name associated with a different
2653 ** DEFCLASS of forward-referenced classes with another
2654 forward-referenced class in the superclasses list no longer
2656 ** Condition slots are now initialized once each, not multiple
2657 times. (thanks to Gerd Moellmann)
2658 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2660 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2661 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2662 arguments contain duplicated elements.
2663 ** RESTART-CASE understands local macros.
2664 ** RESTART-CASE associates exactly its own restarts with a condition.
2665 ** ENDP in safe mode checks its argument to be of type LIST.
2666 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2667 in question is unbound.
2668 ** Optimized MAKE-INSTANCE functions no longer cause internal
2669 assertion failures in the presence of duplicate initargs.
2670 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2671 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2672 propagated even in the ctor optimized implementation of
2674 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2676 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2677 * a better implementation of SXHASH on (simple) bit vectors,
2678 measured both in execution speed and in distribution of results
2679 over the positive fixnums, has been installed. Likewise, a better
2680 implementation of EQUAL for simple bit vectors is now available.
2681 * fixed CEILING optimization for a divisor of form 2^k.
2682 * fixed bug 240 (emitting extra style warnings "using the lexical
2683 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2684 by Antonio Martinez)
2685 * fixed SXHASH, giving different results for NIL depending on type
2686 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2687 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2688 variable. (found by Rolf Wester)
2689 * SBCL does not ignore type declarations for special
2690 variables. (reported by rif on c.l.l 2003-03-05)
2691 * some bug fixes in contrib/sb-aclrepl/
2692 * fixed some bugs revealed by Paul Dietz' test suite:
2693 ** a bug in the CONS type specifier, whereby the CAR and CDR
2694 types got intertwined, has been fixed;
2695 ** the type system is now able to reason about the interaction
2696 between INTEGER and RATIO types more completely;
2697 ** APPEND, [N]REVERSE and NRECONC check that those their
2698 arguments, which must be proper lists, are really so;
2699 ** An array specialized to be unable to hold elements has been
2700 implemented, as required -- yes, really -- by ANSI;
2701 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2702 on malformed property lists;
2704 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2705 * incompatible packaging change: in line with Unix convention,
2706 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2707 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2708 * REQUIRE and PROVIDE are now optionally capable of doing something
2709 useful. See the documentation string for REQUIRE.
2710 * infrastructure for a managed SBCL contrib system: contributed
2711 modules in this release include:
2712 ** the ASDF system definition facility;
2713 ** an interface to the BSD Sockets API;
2714 ** an ACL-like convenience interface to the repl;
2715 (thanks to Kevin Rosenberg)
2716 ** an implementation of ROTATE-BYTE, with efficient implementation
2718 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2719 gives a closer approximation to the right answer than previously.
2720 (thanks to Raymond Toy)
2721 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2722 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2723 optional environment arguments, as required by ANSI.
2724 * fixed bugs in other functions taking environment objects, allowing
2725 calls with an explicit NIL environment argument to be compiled
2727 * fixed bug 228: primary return values from
2728 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2729 COMPILE or FUNCTION.
2730 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2731 :TYPE will no longer signal errors on innocuous objects.
2732 * fixed bug 231b: SETQ is better at respecting type declarations in
2733 the lexical environment.
2734 * fixed a bug in DEFCLASS: classes named by symbols with no or
2735 unprintable packages can now be defined.
2736 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2737 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2738 * fixed compiler failure related to checking types of functions.
2739 (reported by Robert E. Brown)
2740 * the compiler is now much more consistent in its error-checking
2741 treatment of bounding index arguments to sequence functions: in
2742 (SAFETY 3) code, errors will be signalled in almost all cases if
2743 invalid sequence bounding indices are passed to functions defined
2744 by ANSI to operate on sequences.
2745 * fixed a bug in the build procedure: documentation of SBCL-specific
2746 packages is now preserved and available in the final Lisp image.
2747 * lifted FDEFINITION lookup out of loops in the implementation of
2748 many list operations. (thanks to Robert E. Brown)
2749 * fixed a bug in the reader: the #n# reader macro now works for
2750 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2751 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2752 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2753 E. Brown and Tony Martinez respectively)
2754 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2755 SLOT-BOUNDP: in particular, it is now able to optimize them much
2756 better, and is now not vulnerable to having packages renamed.
2757 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2758 always called when a slot is not present in an instance. (thanks
2760 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2761 longer signal an error on unreading a character following EOF on
2762 the previous constituent stream. (thanks to Tony Martinez)
2763 * fixed some bugs revealed by Paul Dietz' test suite:
2764 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2765 not just nonnegative fixnums;
2766 ** the logical bit-array operators such as BIT-AND now accept an
2767 explicit NIL for their "opt-arg" argument (to indicate a
2768 freshly-consed result bit-array);
2769 ** ELT now signals an error on an invalid sequence index in safe
2771 ** the type system is now cleverer about negations of numeric
2772 types, and consequently understands the BIGNUM and RATIO types
2774 ** the type system is now cleverer about the interaction between
2775 INTEGER and RATIO types: while bugs still remain, many more
2776 cases are accurately computed;
2777 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2778 if it is in the last clause;
2779 ** CONSTANTLY now correctly returns a side-effect-free function in
2781 ** DECLARE is no longer treated as a special-operator; in
2782 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2783 * incremented fasl file version number due to the change in the
2784 DEFSTRUCT-SLOT-DESCRIPTION structure.
2786 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2787 * minor incompatible change: code processed by the "interpreter" or
2788 EVAL now has a compilation optimization policy of (DEBUG 2)
2789 (changed from (DEBUG 1)) to improve debuggability of interactive
2790 development, and to allow the use of the debug RETURN command in
2792 * an experimental implementation of the RETURN command for the
2793 debugger has been included. (thanks to Frederik Kuivinen)
2794 * fixed bug 62: constraints were not propagated into a loop.
2795 * fixed bug in embedded calls of SORT (reported and investigated by
2797 * fixed some bugs revealed by Paul Dietz' test suite:
2798 ** printing and reading of arrays with some dimensions having
2799 length 0 (thanks to Gerd Moellmann);
2800 ** BOA constructor with &AUX argument without a default value does
2801 not cause a type error;
2802 ** CONSTANTP now returns true for all self-evaluating objects.
2804 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2805 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2806 accessors that are related by inheritance, as specified in the
2807 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2808 Valtteri Vuorikoski)
2809 * The compiler is now able to inline functions that were defined in
2810 a complex lexical environment (e.g. inside a MACROLET).
2811 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2813 * Support for the upcoming FreeBSD-5.0 release has been included.
2814 (thanks to Dag-Erling Smorgrav)
2815 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2816 effect when it is not in a toplevel context.
2817 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2818 stand a better chance of being correct. (thanks to Gerd
2820 * fixed bug in COERCE, which now signals an error on coercing a
2821 rational to a bounded real type which excludes the expected
2823 * The compiler is now able to derive types more accurately from the
2824 COERCE and COMPILE functions.
2825 * fixed bug 223: functional binding is considered to be constant
2826 only for symbols in the CL package.
2827 * fixed bug 231: SETQ did not check the type of a variable being set
2828 (reported by Robert E. Brown)
2829 * A new optimization for MAKE-INSTANCE has been included, fixing
2830 various bugs (including relating to :ALLOCATION :CLASS slots and
2831 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2833 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2834 ** As required by ANSI, LOOP now disallows anonymous collection
2835 clauses such as COLLECT I in conjunction with aggregate boolean
2836 clauses such as THEREIS (= I 1);
2837 ** LOOP now signals an error when any variable is reused in the
2838 same loop (including the potentially useful construct analogous
2839 to WITH A = 1 WITH A = (1+ A);
2840 ** IT is only a special loop symbol within the first clause of a
2841 conditional loop clause;
2842 ** LOOP with a typed iteration variable over a hashtable now
2843 signals a type error iff it should.
2844 * fixed some other bugs revealed by Paul Dietz' test suite:
2845 ** FILE-STREAM now names the class previously known as FD-STREAM;
2846 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2847 argument) no longer signals an error;
2848 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2849 of the slot symbol, rather than using the current package
2850 ((:CONC-NAME "") continues to intern the slot's name in the
2852 * incremented fasl file version number, because of the incompatible
2853 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2854 of the new implementation of DEFINE-COMPILER-MACRO.
2856 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2857 * Support for building SBCL for MIPS platforms running in
2858 little-endian mode has now been checked in, and basic
2859 functionality on said platforms verified.
2860 * minor incompatible change: PCL now records the pathname of a file
2861 in which methods and the like are defined, rather than its
2863 * minor incompatible change: TRUENAME now considers the truename of
2864 a file naming a directory to be the pathname with :DIRECTORY
2865 component indicating that directory.
2866 * minor incompatible change: a NAMED clause in the extended form of
2867 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2868 reason for the previous behaviour is unclear.
2869 * more systematization and improvement of CLOS and MOP conformance
2870 in PCL (thanks to Gerd Moellman and Pierre Mai):
2871 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2873 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2874 primary methods with no specializers;
2875 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2877 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2878 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2879 FORWARD-REFERENCED-CLASSes; error reporting on
2880 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2882 ** SXHASH on CLOS instances now uses a slot internal to the
2883 instance to return different numbers on distinct instances,
2884 while preserving the same return value through invocations of
2886 ** DEFMETHOD signals errors when methods with longer incongruent
2887 lambda lists are added to generic functions;
2888 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2889 CLASS, as specified in AMOP;
2890 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2891 on the order returned by the primary method for classes of
2892 class STANDARD-CLASS;
2893 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2894 * fixed some bugs shown by Paul Dietz' test suite:
2895 ** DOLIST puts its body in TAGBODY;
2896 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2898 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2899 value producing form;
2900 ** if more variables are given to PROGV than values, extra
2901 variables are bound and made to have no value;
2902 ** NSUBSTITUTE on list arguments gets the right answer with
2904 ** ELT signals an error of type TYPE-ERROR when the index argument
2905 is not a valid sequence index;
2906 ** LOOP signals (at macroexpansion time) an error of type
2907 PROGRAM-ERROR when duplicate variable names are found;
2908 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2909 ** FUNCALL of special-operators now cause an error of type
2911 ** PSETQ now works as required in the presence of side-effecting
2912 symbol-macro places;
2913 ** NCONC accepts any object as its last argument;
2914 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2916 ** loop-for-as-package does not require a package to be explicitely
2918 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2920 * fixed bug 166: compiler preserves "there is a way to go"
2921 invariant when deleting code.
2922 * fixed bug 172: macro lambda lists with required arguments after
2923 &REST arguments now cause an error to be signalled. (thanks to
2925 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2926 bug. (thanks to Matthew Danish)
2927 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2929 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2930 arguments are lexically rebound. (thanks to Gerd Moellmann and
2932 * fixed bug 194: error messages are now more informative when there
2933 is no primary method applicable in a call to a generic
2934 function. (thanks to Gerd Moellmann)
2935 * fixed bug in command line argument checking (thanks to Julian
2937 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2938 (thanks to Matthew Danish)
2939 * incremented fasl file version number, because of the
2940 SXHASH-related changes in the layout of CLOS data structures
2942 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2943 * minor incompatible change: The runtime (the Unix executable named
2944 "sbcl") is now much pickier about the .core files it will load.
2945 Essentially it now requires .core files to descend from the same
2946 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2947 as the runtime does. (The intent is to prevent the crashes which
2948 can occur, and which can even be reported as mysterious failures,
2949 when people patch the sources or change the build parameters
2950 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2951 sbcl and .core files.)
2952 * fixed bug: VALUES-LIST is no longer optimized away.
2953 * fixed bug 142: The FFI conversion of C string values to Lisp
2954 string values no longer conses excessively. (thanks to Nathan
2955 Froyd porting Raymond Toy's fix to CMU CL)
2956 * began to systematize and improve MOP conformance in PCL (thanks to
2957 Nathan Froyd, Gerd Moellman and Pierre Mai):
2958 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2960 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2961 ** FINALIZE-INHERITANCE is now called on class finalization;
2962 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2963 argument precedence order.
2964 * fixed bug 202: The compiler no longer fails on functions whose
2965 derived types contradict their declared type.
2966 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2967 so it can be non-toplevel.
2968 * The fasl file version number has changed (because of the new
2969 implementation of DEFMACRO).
2970 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2971 safe code, that any length requirement by their type-specifier
2972 argument is valid. The exceptions to this are described in bug
2974 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2975 functions now check the types of their inputs as required by ANSI.
2976 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2977 introduced symbol is DECLAREd to be SPECIAL.
2978 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2979 * fixed bug: :COUNT argument to sequence functions may be negative
2980 * fixed bug: body of DO-SYMBOLS may contain declarations
2981 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2982 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2983 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2984 symbol macro only once
2985 * fixed printing of call frame when argument list is unavailable
2986 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2987 * compiler no longer signals WARNING on unknown keyword
2990 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2991 * A beta-quality port to the mips architecture running Linux,
2992 based on the old CMUCL backend, has been made. It has been tested
2993 on a big-endian kernel, and works sufficiently well to be able to
2994 rebuild itself; it has not been tested in little-endian mode.
2995 * fixed an inconsistency between gencgc.c and purify.c which made
2996 dumping/loading .core files unreliable
2997 * fixed bug 120a: The compiler now deals correctly with IFs where
2998 the consequent is the same as the alternative, instead of
2999 misderiving the return type. (thanks to Alexey Dejneka)
3000 * fixed bug 113: Logical pathnames are now dumpable (the logical
3001 host is resolved at load-time, throwing an error if it is not
3003 * fixed bug 174: FORMAT's error message is slightly clearer when a
3004 non-printing character is used in a format directive.
3005 * fixed several bugs in compiler checking of type declarations, i.e.
3006 violations of the Python "declarations are assertions" principle
3007 (thanks to Alexey Dejneka)
3008 * fixed several bugs in PCL's error checking (thanks to Gerd
3010 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3012 * fixed bug in compilation of functions as first class values
3013 (thanks to Antonio Martinez-Shotton)
3014 * The compiler's handling TYPE-ERRORs which it can prove will
3015 inevitably happen at runtime has been cleaned up and corrected
3016 in several ways. (thanks to Alexey Dejneka)
3017 * improved argument type checking for various basic arithmetic
3018 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3019 lavished on them in the past that they can be compiled in many
3020 ways in different special cases
3021 * fixed bug 181: compiler checks validity of user supplied type
3023 * cleaned up code flushing in optimization: Function calls which
3024 should signal errors for safety purposes (e.g. which ANSI says
3025 should signal errors when their arguments are of incorrect type)
3026 are no longer optimized away.
3027 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3028 * incremented fasl file version number, because changes in the
3029 implementation of sequence functions like COERCE caused
3030 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3031 in old inline expansions) to become undefined. (Actually these
3032 changes were later undone, so we might very well be binary
3033 compatible with 0.7.7 after all, but leaving the version number
3034 incremented seemed like the simplest and most conservative
3037 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3038 * An alpha-quality port to the parisc architecture running Linux,
3039 based on the old CMUCL backend, has been made. This, even more so
3040 than the other backends, should be considered still a work in
3041 progress; known problems include that the Linux kernel in 64-bit
3042 mode does not propagate the correct sigcontext structure to
3043 userspace, and consequently SBCL on a parisc64 kernel will not
3045 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3046 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3047 suppressed.) Also now that the compiler is looking at declarations
3048 in the environment, it checks optimization declarations as well,
3049 and suppresses inlining when (> DEBUG SPEED).
3050 * More fixes have been made to treatment of floating point exception
3051 treatment and other Unix signals. In particular, floating point
3052 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3053 * The detection and handling of control stack exhaustion (infinite
3054 or very deeply nested recursion) has changed. Stack exhaustion
3055 detection is now done by write-protecting pages at the OS level
3056 and applies at all optimization settings; when found, a
3057 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3058 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3059 be caught using IGNORE-ERRORS.
3060 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3061 correctly when transforming recursive LABELS functions to LETs.
3062 (thanks to Alexey Dejneka)
3063 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3064 that are names of constants or global variables.
3065 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3066 alien routines with docstrings.
3067 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3068 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3070 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3071 (thanks to Eric Marsden)
3072 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3073 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3074 * Bug fix: The SPARC backend can now compile functions involving
3075 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3076 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3077 to a functions expecting a PATHNAME-DESIGNATOR.
3078 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3079 lambda lists. (thanks to Alexey Dejneka)
3080 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3081 functions so that EXPORTing the name of the class doesn't cause
3082 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3083 to Antonio Martinez for reporting this)
3084 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3085 constant-folded without failing an assertion. (thanks to Einar
3086 Floystad Dorum for reporting this)
3087 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3088 types are now dealt with more correctly by the compiler.
3089 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3090 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3091 behaviour analogous to RENAME-FILE. This puts its behaviour more
3092 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3094 * The fasl file version number has changed again. (because of the
3095 bug fix involving the names of PCL MAKE-INSTANCE functions)
3097 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3098 * bug fix: Floating point exceptions are treated much more
3099 consistently on the x86/Linux and PPC/Linux platforms.
3100 * Array initialization with :INITIAL-ELEMENT is now much faster for
3101 cases when the compiler cannot open code the array creation, but
3102 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3103 array accesses have also seen a speed increase.
3104 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3105 specified. (This was at the root of some bad interactions between
3106 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3108 * bug fix: Internal error arguments for undefined functions are now
3109 computed correctly on the PPC/Linux platform.
3110 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3111 Raymond Toy's patch for CMU CL)
3112 * Support for the Solaris 9 operating environment has been included
3113 (thanks to Daniel Merritt)
3114 * A very ugly but hopefully complete draft of the missing FFI chapter
3115 of the manual has been created by reformatting the corresponding
3116 CMU CL manual chapter into (currently very ugly and incoherent)
3117 DocBook and bringing it up to date for SBCL behavior. Thus, the
3118 manual is now essentially complete, at least by my extreme
3119 once-and-only-once standards, whereby it's acceptable to refer to
3120 the doc strings of SB-EXT functions as the primary documentation.
3121 * The fasl file version number has changed again, due to cleanup of
3122 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3123 is no longer a static symbol.)
3125 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3126 * SBCL now builds with OpenMCL (version 0.12) as the
3127 cross-compilation host; also, more progress has been made toward
3128 bootstrapping under CLISP.
3129 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3131 * bug 158 fixed: The compiler can now deal with integer loop
3132 increments different from 1; fixing this turned out also to fix
3134 * bug 169 fixed: no more bogus warnings about using lexical bindings
3135 despite the presence of perfectly good SPECIAL declarations (thanks
3136 to David Lichteblau)
3137 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3138 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3139 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3141 * bug 180 fixed: Method combination specifications no longer ignore
3142 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3143 * bug fix: Structure type predicate functions now check their argument
3144 count as they should.
3145 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3146 correctly. (thanks to Pierre Mai)
3147 * minor incompatible change: The --noprogrammer option is deprecated
3148 in favor of the new --disable-debugger option, which is very similar.
3149 (The major difference is that it takes effect at a slightly different
3150 time at startup, causing handling of errors in --sysinit and
3151 --userinit files will be affected differently.) The
3152 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3153 been added to allow this functionality to be controlled from ordinary
3154 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3155 maintainers, who might want to run non-interactive scripts to
3156 build SBCL cores which will later be used interactively.)
3157 * minor incompatible change: The LOAD function no longer, when given
3158 a wild pathname to load, loads all files matching that pathname.
3159 Instead, an error of type FILE-ERROR is signalled.
3161 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3162 * bug 147 fixed: The compiler preserves its block link/count
3163 invariants more correctly now so that it doesn't crash. (thanks
3165 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3167 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3168 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3169 no-value-for-this-character as NIL (as specified by ANSI).
3170 * HOST-NAMESTRING on physical pathnames now returns a string that is
3171 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3172 (thanks to Christophe Rhodes)
3173 * The Alpha port handles icache flushing more correctly. (thanks to
3175 * More progress has been made toward bootstrapping under CLISP. (thanks
3176 to Christophe Rhodes)
3177 * The fasl file format has changed again, because dynamic loading
3178 on OpenBSD (which has non-ELF object files) motivated some cleanups
3179 in the way that foreign symbols are transformed and passed around.
3180 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3181 is no longer treated as whitespace by the reader, but instead as
3182 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3183 |A
\7fB|, instead of A as it used to.
3185 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3186 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3187 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3188 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3189 this as of 0.7.1.45, but was left out of the previous news section
3190 (thanks to Dan Barlow)
3191 * SBCL now runs on the Solaris operating system on SPARC architectures
3192 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3193 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3194 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3195 * SPARC backend cleanups, allowing builds of cores optimized for V8
3196 and V9 SPARCS, and also emission of code targeted to a particular
3197 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3199 * SBCL is closer to bootstrapping under CLISP, thanks to various
3200 fixes by Christophe Rhodes.
3201 * The fasl file format has changed again, to allow the compiler's
3202 INFO database to support symbol macros.
3203 * The user manual (in doc/) is formatted into HTML more nicely.
3204 (thanks to coreythomas)
3205 * The system is smarter about SUBTYPEP relationships, especially
3206 those involving NOT types (including types such as ATOM which are
3207 represented internally using NOT types). Thus SUBTYPEP is less
3208 likely to return (VALUES NIL NIL) in general, and in particular
3209 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3211 * The fasl file format has changed again, because the internal
3212 representation of types now includes a new slot to support the new
3213 SUBTYPEP-of-NOT-types logic.
3214 * (not a change in the main branch of SBCL, but a related prototype
3215 which can hopefully be merged into the main branch of SBCL in the
3216 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3217 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3218 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3219 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3220 dispatch macro character combinations. (thanks to Alexey Dejneka)
3221 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3222 that superficially look like logical namestrings correctly.
3223 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3225 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3226 default supplied-p) for &optional and &key arguments. (thanks to
3229 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3230 * incompatible change: The compiler is now less aggressive about
3231 tail call optimization, doing it only when (> SPACE DEBUG) or
3232 (> SPEED DEBUG). (This is an incompatible change because there are
3233 programs which relied on the old CMU-CL-style behavior to optimize
3234 away their unbounded recursion which will now die of stack overflow.)
3235 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3236 for non-GENCGC systems has been increased to 20M (since that
3237 seems much closer to the likely performance optimum for modern
3238 systems than the old 4M value was)
3239 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3240 and *DEBUG-PRINT-LEVEL*
3241 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3242 of CMU CL's support for SPARC, and various endianness and other
3243 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3244 * new syntactic sugar for the Unix command line: --load foo.bar is now
3245 an alternate notation for --eval '(load "foo.bar")'.
3247 ** The system now detects stack overflow and handles it gracefully,
3248 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3249 optimization settings. (This is a good thing in general, and
3250 its introduction in this version should be particularly timely
3251 for anyone whose code fails because of suppression of tail
3253 ** The system now hunts for the C variable "environ" in a more
3254 devious way, to avoid segfaults when the C library version differs
3255 between compile time and run time. (thanks to Christophe Rhodes)
3256 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3257 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3258 ** The compiler no longer issues bogus style warnings for undefined
3259 classes in the same source file as the DEFCLASSes which defined
3260 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3262 ** fixes in CONDITION class precedence list for undefined function
3263 errors (thanks to Alexei Dejneka)
3264 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3265 correctly. (thanks to Dan Barlow)
3266 ** portability fixes aiming at bootstrapping under CLISP (thanks
3267 to Dave McDonald and Christophe Rhodes)
3268 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3269 ** fixes in type translation and and type inference (thanks to
3271 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3272 ** various fixes in the new ports (thanks to Dan Barlow)
3273 * several changes related to debugging:
3274 ** suppression of tail recursion, as noted above
3275 ** stack overflow detection, as noted above
3276 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3277 is now the default. (For some time encapsulation has been more
3278 reliable than the breakpoint-based :ENCAPSULATE NIL
3279 implementation, at least on X86 systems; and I just noticed that
3280 encapsulation also seems closer to the spirit of the ANSI
3283 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3285 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3286 up properly again. (There was a packaging bug in 0.7.0 which
3287 left their definitions in SB-SYS::LOAD-FOREIGN and
3288 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3289 vital for most things which interface to C-level interfaces,
3290 like extensions working with sockets or databases or
3291 Perl-compatible regexes or whatever, and the need to fix
3292 this bug is the main reason that 0.7.1 was released so
3294 ** DEFGENERIC is now choosier about the methods it redefines, so that
3295 reLOADing a previously-LOADed file containing DEFGENERICs does
3296 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3297 cycle now works as it should. (thanks to Alexey Dejneka)
3298 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3299 fixed by Christophe Rhodes. (He actually submitted this patch
3300 months ago, and I delayed until after 0.7.0.)
3301 ** Bug 111 (internal compiler confusion about runtime checks on
3302 FUNCTION types) was fixed by Alexey Dejneka.
3303 * Some internal cleanups (getting rid of variables which aren't
3304 needed now that the byte interpreter is gone) caused the fasl
3305 file format number to change again.
3307 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3308 * major incompatible change: The default fasl file extension, i.e. the
3309 default extension for files produced by COMPILE-FILE, has changed
3310 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3312 ** There are many changes in the implementation of the compiler.
3313 SBCL is now essentially a compiler-only implementation of ANSI
3314 Common Lisp. EVAL still "interprets" a few special cases, but
3315 almost all the interesting cases are handled by creating
3316 a LAMBDA expression, calling COMPILE on it, then calling
3317 FUNCALL on the result.
3318 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3319 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3320 Since the code is newer, there might still be some new bugs
3321 (though not as many as before Martin Atzmueller's fixes:-). But
3322 the new code is substantially simpler and clearer, and hopefully
3323 any remaining bugs will be simpler, less fundamental, and more
3324 fixable then the bugs in the old code.
3325 ** The revised compiler is still a little unsteady on its feet.
3327 *** The debugging information it produces (particularly the names
3328 of FUNCTION objects) is sometimes much less useful than what
3329 the old compiler produced.
3330 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3331 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3332 within a MACROLET) has been temporarily weakened.
3333 ** There are new compiler optimizations for various functions:
3334 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3335 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3336 *** the math functions TRUNCATE, FLOOR, and CEILING
3337 *** the function-of-all-trades COERCE
3338 Mostly these should be transparent, but there's one
3339 potentially-annoying problem (bug 117): when the compiler
3340 inline-expands a function and does type analysis on the result,
3341 it can create control paths which have type mismatches, and
3342 when it can't prove that those control paths aren't taken,
3343 it will issue WARNINGs about the type mismatches. This is
3344 a particular problem in practice for the new sequence functions.
3345 It's not clear how this should be fixed, and for now, a
3346 workaround is given in the entry for 117 in the BUGS file.
3347 ** (Because of the interaction between the two previous items --
3348 occasional inlining problems and new inline expansions -- some
3349 of the new sequence function optimizations won't really kick in
3350 completely until debugging information, and then inlining, are
3351 straightened out in some future version.)
3352 * minor incompatible changes:
3353 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3354 DIRECTORY no longer implicitly promotes NIL slots of its
3355 pathname argument to :WILD. In particular, when you ask for the
3356 contents of a directory (which you used to be able to do without
3357 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3358 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3359 ** changes in behavior that ANSI explicitly defines to be
3360 implementation dependent:
3361 *** The new compiler-only implementation still conforms with ANSI,
3362 but acts a little different than before. Besides the obvious
3363 changes in performance tradeoffs (that the cost per form passed
3364 to EVAL has gone up, and the cost per form executed by EVAL
3365 has gone down), the behavior of the system changes a little
3366 because there are no longer any interpreted function objects.
3367 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3368 e.g. doing COMPILE on the output of interactive DEFUN is
3370 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3372 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3373 has changed from (:CL) to NIL.
3374 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3375 e.g. #\Newline and #\Tab, don't have names specified in the
3376 ANSI Common Lisp standard, is now based on their ASCII symbolic
3377 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3378 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3379 are no longer used for output.
3380 ** changes in internal implementation constants:
3381 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3382 4 million. (If your application spends a lot of time GCing and
3383 you have a lot of RAM, you might want to experiment with
3384 increasing it even more.)
3385 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3386 However, almost all old code should still continue to work without
3387 immediate update, as SB-C-CALL is now a (deprecated) nickname
3389 ** Old operator names in the style DEF-FOO are now deprecated in
3390 favor of new corresponding names DEFINE-FOO, for consistency with
3391 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3392 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3393 internal symbols, but a few supported extensions like
3394 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3395 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3396 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3397 etc. as you get deeper into recursive calls to the debugger
3398 command loop, instead of the old "5]", "5]]", "5]]]"
3399 sequence. (I was motivated to do this when squabbles between
3400 ILISP and SBCL left me very deeply nested in the debugger. In the
3401 short term, this change will probably provoke more ILISP/SBCL
3402 squabbles, but hopefully it will be an improvement in the long run.)
3403 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3404 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3405 function, since declaiming return types involving aliens is
3406 (1) annoyingly messy to do by hand and (2) vital to efficient
3407 compilation of code which calls such functions.
3408 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3409 longer reexported by the SB-EXT package. They're solely useful
3410 for alien code, so it seems more logical that you should get
3411 them from the SB-ALIEN package, not in SB-EXT.
3412 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3413 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3414 features. Instead, the code that they used to control is always
3415 built into the system.
3416 * many other bug fixes
3417 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3418 advantage of the new EVAL-WHEN stuff and to clean them up in
3419 general, and they are now more ANSI-compliant in a number of
3420 ways. Martin Atzmueller is responsible for a lot of this.
3421 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3423 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3424 *** correct ERROR type for various file operations
3425 *** some fixes for Lisp streams
3426 *** DEFMETHOD syntax checking
3427 *** changing old weird representation of debug information as
3428 strings (which, among their other deficiencies, don't transform
3429 correctly when you rename packages, and don't change their
3430 print representation when you change things like *PACKAGE*
3431 and *PRINT-LENGTH*) to symbols and lists of symbols
3432 He also made several improvements and fixed several bugs in DESCRIBE.
3433 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3435 *** misbehavior of WRITE-STRING/WRITE-LINE
3436 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3437 and several other LOOP problems as well
3438 *** DIRECTORY when similar filenames are present
3439 *** DEFGENERIC with :METHOD options
3440 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3441 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3442 *** argument ordering in FIND with :TEST option
3443 *** mishandled package designator argument in APROPOS-LIST
3444 *** various problems in the backquote readmacro
3445 *** a bug in APROPOS
3446 *** probably some others that I'm not describing very well here,
3447 since the CVS log documents them by reference to sbcl-devel
3448 messages, and the SourceForge archives aren't working well.:-(
3449 ** Dan Barlow improved the Alpha port (and is making progress on the
3450 PPC port, for those of you who think different).
3451 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3452 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3453 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3454 continues to work on the SPARC port (for those of you in a position
3455 to look down upon our little PC-compatible boxes from a great height).
3456 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3457 and uses that copy, rather than the current dynamic value, when
3458 it's trying to decide whether to truncate output. Thus e.g.
3459 (let ((*print-lines* 50))
3460 (pprint-logical-block (stream nil)
3462 (let ((*print-lines* 8))
3463 (print (aref possiblybigthings i) stream)))))
3464 should now truncate the logical block only at 50 lines, instead of
3465 often truncating it at 8 lines, as it did before.
3466 * The doc/cmucl/ directory, containing old CMU CL documentation
3467 from the time of the fork, is no longer part of the base system.
3468 SourceForge has shut down its anonymous FTP service, and with it
3469 my original plan for distributing the old CMU CL documentation
3470 there. For now, if you need these files you can download an old
3471 SBCL source release and extract them from it.
3472 * The fasl file version number changed again, for dozens of reasons,
3473 some of which are apparent above.
3475 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3476 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3477 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3478 patch, so that DISASSEMBLE output is much nicer.
3479 * The code in the SB-PROFILE package now seems reasonably stable.
3480 I still haven't decided what the final interface should look like
3481 (I'd like PROFILE to interact cleanly with TRACE, since both
3482 facilities use function encapsulation) but if you have a need
3483 for profiling now, you can probably use it successfully with
3484 the current CMU-CL-style interface.
3485 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3486 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3487 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3488 link now returns the dangling link itself, and for similar
3489 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3490 link itself. (In these cases the old code signalled an error and
3491 looped endlessly, respectively.) Thus, DIRECTORY now works even
3492 in the presence of dangling and cyclic symbolic links.
3493 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3494 is now a supported extension again, since the consensus on
3495 sbcl-devel was that it can be useful for ordinary development
3496 work, not just for debugging SBCL itself.
3497 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3498 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3499 that currently-defined functions might be redefined later with
3500 different return types.
3501 * Hash tables can be printed readably, as inspired by CMU CL code
3502 of Eric Marsden and SBCL code of Martin Atzmueller.
3503 * better error handling in CLOS method combination, thanks to
3504 Martin Atzmueller porting Pierre Mai's CMU CL patches
3505 * more overflow fixes for >16Mbyte I/O buffers
3506 * A bug in READ has been fixed, so that now a single Ctrl-D
3507 character suffices to cause end-of-file on character streams.
3508 In particular, now you only need one Ctrl-D at the command
3509 line (not two) to exit SBCL.
3510 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3512 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3513 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3514 does the right thing.
3515 * The implementation of some type tests, especially for CONDITION
3516 types, is now tidier and maybe faster, due to CMU CL code
3517 originally by Douglas Crosher, ported by Martin Atzmueller.
3518 * Some math functions have been fixed, and there are new
3519 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3520 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3521 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3522 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3523 likely to be built into sbcl-0.7.0.)
3524 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3525 CL, ported to SBCL by Martin Atzmueller)
3526 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3527 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3528 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3529 * There's a new slam.sh hack to shorten the edit/compile/debug
3530 cycle for low-level changes to SBCL itself, and a new
3531 :SB-AFTER-XC-CORE target feature to control the generation of
3532 the after-xc.core file needed by slam.sh.
3533 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3534 COMPILE-FILE is no longer supported, so that now every function
3535 gets an entry point, so that block compilation looks a little
3536 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3537 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3538 returns the number of bytes consed since the system started,
3539 rather than the number consed since the first time the function
3540 was called. (The new definition parallels ANSI functions like
3541 CL:GET-INTERNAL-RUN-TIME.)
3542 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3543 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3544 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3545 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3546 * Fasl file version numbers are now independent of the target CPU,
3547 since historically most system changes which required version
3548 number changes have affected all CPUs equally. Similarly,
3549 the byte fasl file version is now equal to the ordinary
3552 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3553 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3554 is no longer recognized. I apologize for this, because it was
3555 listed in SB-EXT as a supported extension, but I found that
3556 its existing behavior was poorly specified, as well as incorrectly
3557 specified, and it looked like too much of a mess to straighten it
3558 out. I have enough on my hands trying to get ANSI stuff to work..
3559 * many patches ported from CMU CL by Martin Atzmueller, with
3560 half a dozen bug fixes in pretty-printing and the debugger, and
3561 half a dozen others elsewhere
3562 * fixed bug 13: Floating point infinities are now supported again.
3563 They might still be a little bit flaky, but thanks to bug reports
3564 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3565 as flaky as they were.
3566 * The --noprogrammer command line option is now supported. (Its
3567 behavior is slightly different in detail from what the old man
3568 page claimed it would do, but it's still appropriate under the
3569 same circumstances that the man page talks about.)
3570 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3571 are now supported, and enabled by default. Thus, the compiler can
3572 handle many floating point and complex operations much less
3573 inefficiently. (Thus e.g. you can implement a complex FFT
3575 * The compiler now detects type mismatches between DECLAIM FTYPE
3576 and DEFUN better, and implements CHECK-TYPE more correctly, and
3577 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3578 thanks to patches from Martin Atzmueller.
3579 * various fixes to make the cross-compiler more portable to
3580 ANSI-conforming-but-different cross-compilation hosts (notably
3581 Lispworks for Windows, following bug reports from Arthur Lemmens)
3582 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3583 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3584 fixed thanks to Pierre Mai's CMU CL patches.
3585 * fixes to keep the system from overflowing internal counters when
3586 it tries to use i/o buffers larger than 16M bytes
3587 * fixed bug 45a: Various internal functions required to support
3588 complex special functions have been merged from CMU CL sources.
3589 (When I was first setting up SBCL, I misunderstood a compile-time
3590 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3591 * improved support for type intersection and union, fixing bug 12
3592 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3593 more obscure bugs as well
3594 * some steps toward byte-compiling non-performance-critical
3595 parts of the system, courtesy of patches from Martin Atzmueller
3596 * Christophe Rhodes has made some debian packages of sbcl at
3597 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3598 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3599 stable, but are nonetheless usable. When he's ready, I'd be happy
3600 to add them to the SourceForge "File Releases" section. (And if
3601 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3602 * new fasl file format version number (because of changes in
3603 internal representation of (OR ..) types to accommodate the new
3604 support for (AND ..) types, among other things)
3606 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3607 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3609 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3611 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3612 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3613 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3614 * DESCRIBE now works on structure objects again.
3615 * Most function call argument type mismatches are now handled as
3616 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3617 know whether the function will be redefined before the call is
3618 executed. (The compiler could flag local calls with full WARNINGs,
3619 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3620 it doesn't keep track of enough information to know whether calls
3621 are local in this sense.)
3622 * Compiler output is now more verbose, with messages truncated
3623 later than before. (There should be some supported way for users
3624 to override the default verbosity, but I haven't decided how to
3625 provide it yet, so this behavior is still controlled by the internal
3626 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3627 src/compiler/ir1util.lisp.)
3628 * Fasl file format version numbers have increased again, because
3629 support for the Gray streams extension changes the layout of the
3630 system's STREAM objects.
3631 * The Gray subclassable streams extension now works, thanks to a
3632 patch from Martin Atzmueller.
3633 * The full LOAD-FOREIGN extension (not just the primitive
3634 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3635 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3636 but like most other programs, it defaults to copying the Unix
3637 environment from the original process instead of starting the
3638 new process in an empty environment.
3639 * Extensions which manipulate the Unix environment now support
3640 an :ENVIRONMENT keyword option which doesn't smash case or
3641 do other bad things. The CMU-CL-style :ENV option is retained
3642 for porting convenience.
3643 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3644 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3646 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3648 * A patch from Martin Atzmueller seems to have solved the SIGINT
3649 problem, and as far as we know, signal-handling now works cleanly.
3650 (If you find any new bugs, please report them!)
3651 * The system no longer defaults Lisp source file names to types
3652 ".l", ".cl", or ".lsp", but only to ".lisp".
3653 * The compiler no longer uses special default file extensions for
3654 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3655 seems to expect a single default extension for all compiled code,
3656 and there's no compelling reason to try to stretch the standard
3657 to allow two different extensions.) Instead, byte-compiled files
3658 default to the same extension as native-compiled files.
3659 * Fasl file format version numbers have increased again, because
3660 a rearrangement of internal implementation packages made some
3661 dumped symbols in old fasl files unreadable in new cores.
3662 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3663 many fewer weird special cases.
3664 * Bug #17 (differing COMPILE-FILE behavior between logical and
3665 physical pathnames) has been fixed, and some related misbehavior too,
3666 thanks to a patch from Martin Atzmueller.
3667 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3668 by Tim Moore, ported to SBCL by Martin Atzmueller.
3669 * Martin Atzmueller fixed several filesystem-related problems,
3670 including bug #36, in part by porting CMU CL patches, which were
3671 written in part by Paul Werkowski.
3672 * More compiler warnings in src/runtime/ are gone, thanks to
3673 more patches from Martin Atzmueller.
3674 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3677 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3679 * DESCRIBE now works on CONDITION objects.
3680 * The debugger now handles errors which arise when trying to print
3681 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3683 * The build system now uses an additional file, customize-target-features.lisp,
3684 to allow local modifications to the target *FEATURES* list. (The point of
3685 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3686 debugging features enabled, without having to worry about propagating it
3687 into everyone's system when I do a "cvs update".) When no
3688 customize-target-features.lisp file exists, the target *FEATURES* list
3689 should be constructed the same way as before.
3690 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3691 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3692 warn about behavior which is undefined under the ANSI spec. Note: This
3693 is specified by ANSI, but it's not very popular with programmers.
3694 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3695 macro in the SBCL sources for an example of a workaround which you
3696 might use to make portable ANSI-standard code which does what you want.
3697 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3698 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3699 when it's used as a non-toplevel form. (This is required in order
3700 to implement the DEFCONSTANT-EQX macro.)
3701 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3702 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3703 funny things, due to bugs in the implementation of EVAL-WHEN
3704 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3705 non-toplevel DEFCONSTANTs are uncommon.)
3706 * The core file version number and fasl file version number have been
3707 incremented, because the old noncompliant DEFCONSTANT behavior involved
3708 calling functions which no longer exist, and because I also took the
3709 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3710 * fixed bug 1 (error handling before read-eval-print loop starts), and
3711 redid debugger restarts and related debugger commands somewhat while
3713 ** The QUIT debugger command is gone, since it did something
3714 rather different than the SB-EXT:QUIT command, and since it never
3715 worked properly outside the main toplevel read/eval/print loop.
3716 Invoking the new TOPLEVEL restart provides the same functionality.
3717 ** The GO debugger command is also gone, since you can just invoke
3718 the CONTINUE restart directly instead.
3719 ** The TOP debugger command is also gone, since it's redundant with the
3720 FRAME 0 command, and since it interfered with abbreviations for the
3722 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3724 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3725 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3726 some porting work by Martin Atzmueller)
3727 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3728 with a boatload of patches which he ported to SBCL. Now that those
3730 ** The system tries to make sure that its low-priority messages
3731 are prefixed by semicolons, to help people who like to use
3732 syntax highlighting in their ILISP buffer. (This patch
3733 was originally due to Raymond Toy.)
3734 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3735 patches originally written by Raymond Toy.
3736 ** The compiler understands coercion between single-value and
3737 multiple-VALUES type expressions better, getting rid of some very
3738 weird behavior, thanks to patches originally by Robert MacLachlan
3739 and Douglas Crosher.
3740 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3741 lambda lists, thanks to a patch originally by Pierre Mai.
3742 ** The system no longer bogusly warns about "abbreviated type
3744 ** The compiler gets less confused by inlining and RETURN-FROM,
3745 thanks to some patches originally by Tim Moore.
3746 ** The system no longer hangs when dumping circular lists to fasl
3747 files, thanks to a patch originally from Douglas Crosher.
3748 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3749 undefined function error.
3750 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3751 in structure slot initforms) for now, documented workaround instead:-|
3752 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3753 * fixed bug 5: added stubs for various Gray stream functions called
3754 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3755 installed, at least appropriate type errors are generated
3756 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3757 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3758 consistently in DEFMETHOD forms.
3759 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3760 it doesn't seem to affect SBCL after all
3761 * The C runtime system now builds with better optimization and many
3762 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3764 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3766 * The system is now under CVS at SourceForge (instead of the
3767 CVS repository on my home machine).
3768 * The new signal handling code has been tweaked to treat register
3769 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3770 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3771 downstream, e.g. in debug-int.lisp, has implicit dependencies
3772 on the unsignedness of integer representation of machine words,
3773 and that caused the system to bomb out with infinite regress
3774 when trying to recover from type errors involving signed values,
3775 e.g. (BUTLAST '(1 2 3) -1).)
3776 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3777 (This was one of the bugs Peter Van Eynde reported back in July.)
3778 * The system now uses code inspired by Colin Walters' O(N)
3779 implementation of MAP (from the cmucl-imp@cons.org mailing
3780 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3781 inline the MAP operation, and there is more than one
3782 sequence argument to the MAP call (so that it can't just
3783 do ETYPECASE once and for all based on the type of the
3784 single sequence argument). (The old non-inline implementation
3785 of the general M-argument sequence-of-length-N case required
3786 O(M*N*N) time when any of the sequence arguments were LISTs.)
3787 * The QUIT :UNIX-CODE keyword argument has been renamed to
3788 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3789 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3791 * Raymond Wiker's patches to port dynamic loading from Linux to
3792 FreeBSD have been added.
3793 * The BUGS file is now more nearly up to date, thanks in large part
3794 to Martin Atzmueller's review of it.
3795 * The debugger now flushes standard output streams before it begins
3796 its output ("debugger invoked" and so forth).
3797 * The core version number and fasl file version number have both
3798 been incremented, because of incompatible changes in the layout
3800 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3801 used to not be called for a saved Lisp image.)
3802 * Martin Atzmueller's version of a patch to fix a compiler crash,
3803 as posted on sbcl-devel 13 September 2000, has been installed.
3804 * Instead of installing Martin Atzmueller's patch for the
3805 compiler transform for SUBSEQ, I deleted the compiler transform,
3806 and transforms for some similar consing operations.
3807 * A bug in signal handling which kept TRACE from working on OpenBSD
3809 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3810 away by constant folding
3811 * The system now defines its address space constants in one place
3812 (in the Lisp sources), and propagates them automatically elsewhere
3813 (through GENESIS and the sbcl.h file). Therefore, patching the
3814 address map is less unnecessarily tedious and error-prone. The
3815 Lisp names of address space constants have also been systematized.
3816 * CVS tags like dollar-Header-dollar have been removed from
3817 the sources, because they have never saved me trouble and
3818 they've been source of trouble working with patches and other
3819 diff-related operations.
3820 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3821 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3823 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3825 * The system has been ported to OpenBSD.
3826 * The system now compiles with a simple "sh make.sh" on the systems
3827 that it's supported on. I.e., now you no longer need to tweak
3828 text in the target-features.lisp-expr and symlinks in src/runtime/
3829 by hand, the make.sh takes care of it for you.
3830 * The system is no longer so grossly inefficient when compiling code
3831 involving vectors implemented as general (not simple) vectors (VECTOR T),
3832 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3833 which dares to use the various sequence functions on non-simple
3834 vectors, takes less of a performance hit.
3835 * There is now a primitive type predicate VECTOR-T-P
3836 to test for the (VECTOR T) type, so that e.g.
3837 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3838 can now be compiled with some semblance of efficiency. (The old code
3839 turned the type declaration into a full call to %TYPEP at runtime!)
3840 * AREF on (VECTOR T) is still not fast, since it's still compiled
3841 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3842 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3843 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3844 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3845 without making full calls to SUBTYPEP at runtime.
3846 (Some analogous efficiency issues for non-simple vectors specialized to
3847 element types other than T, or for non-simple multidimensional arrays,
3848 have not been addressed. They could almost certainly be handled the
3849 same way if anyone is motivated to do so.)
3850 * The changes in array handling break binary compatibility, so
3851 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3852 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3853 instead of (VALUES T T).
3854 * By following the instructions that Dan Barlow posted to sbcl-devel
3855 on 2 July 2000, I was able to enable primitive dynamic object
3856 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3857 functionality is not implemented (since it calls ld to resolve
3858 library references automatically, requiring RUN-PROGRAM for its
3859 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3860 try to resolve library references) is now supported.
3861 * The system now flushes the standard output streams when it terminates,
3862 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3863 them at several other probably-convenient times, e.g. in each pass of
3864 the toplevel read-eval-print loop, and after evaluating a form given
3865 as an "--eval" command-line option. (These changes were motivated by a
3866 discussion of stream flushing issues on cmucl-imp in August 2000.)
3867 * The source transform for TYPEP of array types no longer assumes
3868 that an array whose element type is a not-yet-defined type
3869 is implemented as an array of T, but instead punts, so that the
3870 type will be interpreted at runtime.
3871 * There is now some support for cross-compiling in make.sh: each of
3872 the phases of make.sh has its own script. (This should be transparent
3873 to people doing ordinary, non-cross-compile builds.)
3874 * Since my laptop doesn't have hundreds of megabytes of memory like
3875 my desktop machine, I became more motivated to do some items on
3876 my to-do list in order to reduce the size of the system a little:
3877 ** Arrange for various needed-only-at-cold-init things to be
3878 uninterned after cold init. To support this, those things have
3879 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3880 symbols with such names are now uninterned after cold init).
3881 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3882 fasl files for cold load.
3883 ** Remove the old compiler structure pooling code (which used to
3884 be conditional on the target feature :SB-ALLOC) completely.
3885 ** Redo the representation of some data in cold init to be more compact.
3886 (I also looked into supporting byte compiled code at bootstrap time,
3887 which would probably reduce the size of the system a lot, but that
3888 looked too complicated, so I punted for now.)
3889 * The maximum signal nesting depth in the src/runtime/ support code has
3890 been reduced from 4096 to 256. (I don't know any reason for the very
3891 large old value. If the new smaller value turns out to break something,
3892 I'll probably just bump it back up.)
3893 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3895 * Many, many bugs reported by Peter Van Eynde have been added to
3896 the BUGS list; some have even been fixed.
3897 * While enabling dynamic object file loading, I tried to make the
3898 code easier to understand, renaming various functions and variables
3899 with less ambiguous names, and changing some function calling
3900 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3901 * While trying to figure out how to do the OpenBSD port, I tried to
3902 clean up some of the code in src/runtime/. In particular, I dropped
3903 support for non-POSIX signal handling, added various comments,
3904 tweaked the code to reduce the number of compilation warnings, and
3905 renamed some files to increase consistency.
3906 * To support the new automatic configuration functionality in make.sh,
3907 the source file target-features.lisp-expr has been replaced with the
3908 source file base-target-features.lisp-expr and the machine-generated
3909 file local-target-features.lisp-expr.
3910 * fixed a stupid quoting error in make.sh so that using CMU CL
3911 "lisp -batch" as cross-compilation host works again
3913 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3915 * DESCRIBE no longer tries to call itself recursively to describe
3916 bound/fbound values, so that it no longer fails on symbols which are
3917 bound to themselves (like keywords, T, and NIL).
3918 * DESCRIBE now works on generic functions.
3919 * The printer now prints less-screwed-up representations of closures
3920 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3921 * A private symbol is used instead of the :EMPTY keyword previously
3922 used to mark empty slots in hash tables. Thus
3923 (DEFVAR *HT* (MAKE-HASH-TABLE))
3924 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3925 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3926 now does what ANSI says that it should. (You can still get
3927 similar noncompliant behavior if bang on the hash table
3928 implementation with all the symbols you get back from
3929 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3930 This breaks binary compatibility, since tests for equality to
3931 :EMPTY are wired into things like the macroexpansion of
3932 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3934 * There's now a minimal placeholder implementation for CL:STEP,
3935 as required by ANSI.
3936 * An obscure bug in the interaction of the normal compiler, the byte
3937 compiler, inlining, and structure predicates has been patched
3938 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3939 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3941 * Missing ordinary arguments in a macro call are now detected even
3942 when the macro lambda list contains &KEY or &REST.
3943 * The debugger no longer complains about encountering the top of the
3944 stack when you type "FRAME 0" to explicitly instruct it to go to
3945 the top of the stack. And it now prints the frame you request even
3946 if it's the current frame (instead of saying "You are here.").
3947 * As specified by ANSI, the system now always prints keywords
3948 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3950 * The default initial SIZE of HASH-TABLEs is now smaller.
3951 * Type information from CLOS class dispatch is now propagated
3952 into DEFMETHOD bodies, so that e.g.
3953 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3955 is now basically equivalent to
3956 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3957 (DECLARE (TYPE SINGLE-FLOAT X))
3959 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3960 operation, without having to do run-time type dispatch.
3961 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3962 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3963 * Since I don't seem to be making big file reorganizations very often
3964 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3965 is overflowing my ability to conveniently back them up), I've finally
3966 checked the system into CVS. (The CVS repository is on my home system,
3967 not at SourceForge -- putting it on SourceForge might come later.)
3968 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3969 high-level GC-NOTIFY-FOO functions send their output. (There's
3970 still very little control of where low-level verbose GC functions
3971 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3972 less than it used to -- the GC-NOTIFY-FOO functions are now under
3973 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3974 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3975 in only one place in the source code, and propagates it automatically
3976 everywhere that it's needed. Thus e.g. when I bump the version from
3977 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3978 * The C source files now include boilerplate legalese and documentation
3979 at the head of each file (just as the Lisp source files already did).
3980 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3981 to his page will be replaced with a link to his new CLiki service.
3983 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3985 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3986 * The build process now looks for GNU make under the default name "gmake",
3987 instead of "make" as it used to. If GNU make is not available as "gmake"
3988 on your system, you can change this default behavior by setting the
3989 GNUMAKE environment variable.
3990 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3991 can build without error under CMU CL.
3993 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3995 * There is now a partial SBCL user manual (with some new text and some
3996 text cribbed from the CMU CL manual).
3997 * The beginnings of a profiler have been added (starting with the
3998 CMU CL profiler and simplifying and cleaning up). Eventually the
3999 main interface should be through the TRACE macro, but for now,
4000 it's still accessed through vaguely CMU-CL-style functions and macros
4001 exported from the package SB-PROFILE.
4002 * Some problems left over from porting CMU CL to the new
4003 cross-compilation bootstrap process have been cleaned up:
4004 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4005 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4006 part when getting rid of the compiler *BACKEND* stuff.)
4007 ** The value of *NULL-TYPE* was screwed up, because it was
4008 being initialized before the type system knew the final
4009 definition of the 'NULL type. This screwed up several key
4010 optimizations in the compiler, causing inefficiency in all sorts
4011 of places. (I found it because I wanted to understand why
4012 GET-INTERNAL-RUN-TIME was consing.)
4013 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4014 PROCLAIM FTYPE information. Unfortunately this broke binary
4015 compatibility again, since now the forms output by DEFGENERIC
4016 to refer to functions which didn't exist in 0.6.3.
4017 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4018 can use the new (as of 0.6.3) transform for SOME into MAP into
4020 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4021 values to (INTEGER 0 1000000), so that the time code will no longer
4022 occasionally get blown up by Linux returning 1000000 microseconds
4023 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4024 its output conform to the ANSI spec. (Alas, this makes its output
4025 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4026 * A full call to MAP NIL with a single sequence argument no longer conses.
4027 * fixes to problems pointed out by Martin Atzmueller:
4028 * The manual page no longer talks about multiprocessing as though
4029 it were currently supported.
4030 * The ILISP support patches have been removed from the distribution,
4031 because as of version 5.10.1, ILISP now supports SBCL without us
4032 having to maintain patches.
4033 * added a modified version of Raymond Toy's recent CMU CL patch for
4034 EQUALP comparison of HASH-TABLE
4036 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4038 * The system still can't cross-compile itself with
4039 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4040 entails), but at least it can compile more of itself that way
4041 than it used to be able to, and various buglets which were uncovered
4042 by trying to cross-compile itself that way have now been fixed.
4043 * This release breaks binary compatibility again. This time
4044 at least I've incremented the FASL file format version to 2, so that the
4045 problem can be detected reliably instead of just causing weird errors.
4046 * various new style warnings:
4047 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4048 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4049 ** using the lexical binding of a variable named in the *FOO* style
4050 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4051 as specified by ANSI.
4052 * *RANDOM-STATE* is no longer automatically initialized from
4053 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4054 default behavior of the system is to repeat its behavior every time
4055 it's run. If you'd like to change this behavior, you can always
4056 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4057 old convention there was no comparably easy way to get the system to
4058 repeat its behavior every time it was run.
4059 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4060 FTYPE declarations has been removed, in favor of their ANSI
4061 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4062 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4063 the types of their sequence arguments can be determined at compile time.
4064 This is done through a new open code expansion for MAP which eliminates
4065 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4066 argument types can be determined at compile time.
4067 * The optimizer now transforms COERCE into an identity operation when it
4068 can prove that the coerced object is already of the correct type. (This
4069 can be a win for machine generated code, including the output of other
4070 optimization transforms, such as the MAP transform above.)
4071 * Credit information has been moved from source file headers into CREDITS.
4072 * Source file headers have been made more standard.
4073 * The CASE macro now compiles without complaining even when it has
4076 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4078 * (Note that the way that the PCL macroexpansions were rewritten
4079 to accommodate the change in DEFGENERIC below breaks binary
4080 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4081 not run under sbcl-0.6.2. Once we get out of alpha releases,
4082 i.e. hit release 1.0.0, we'll probably try to maintain binary
4083 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4084 and sbcl-1.4.4. Until then, however, it might be fairly common
4085 for maintenance releases to break binary compatibility.)
4086 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4088 * The reporting of unhandled signals has been changed to print some
4089 explanatory text as well as the report form. (Previously only
4090 the report form was printed.)
4091 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4092 it defines, so that the compiler no longer issues undefined function
4093 warnings for compiled-but-not-yet-loaded generic functions.
4094 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4095 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4096 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4097 section of the ANSI spec are supported.
4098 * The "" nickname for the "KEYWORD" package has been removed.
4099 The reader still handles symbol tokens which begin with a package marker
4100 as keywords, but it doesn't expose its mechanism for doing so in the
4101 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4102 * The system now issues STYLE-WARNINGs for contradictory TYPE
4103 proclamations. (Warnings for contradictory FTYPE proclamations would
4104 be nice too, but those can't be done usefully unless the type system
4105 is made smarter about FUNCTION types.)
4106 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4107 systematized, so that "*target-*.lisp is supposed to exist only on the
4108 target and imply that there's a related file which exists on the
4109 host, and *host-*.lisp is supposed to exist only on the host and imply
4110 that there's a related file which exists on the target. This involves a
4111 lot of renaming. Hopefully the acute confusion caused by the renaming
4112 will be justified by the reduction in chronic confusion..
4113 ** runtime-type.lisp -> early-target-type.lisp
4114 ** target-type.lisp -> late-target-type.lisp
4115 ** early-host-format.lisp -> early-format.lisp
4116 ** late-host-format.lisp -> late-format.lisp
4117 ** host-error.lisp -> misc-error.lisp
4118 ** early-error.lisp -> early-target-error.lisp
4119 ** late-error.lisp -> late-target-error.lisp
4120 ** host-defboot.lisp -> early-defboot.lisp
4121 ** code/misc.lisp -> code/target-misc.lisp
4122 ** code/host-misc.lisp -> code/misc.lisp
4123 ** code/numbers.lisp -> code/target-numbers.lisp
4124 ** code/early-numbers.lisp -> numbers.lisp
4125 ** early-host-type.lisp -> early-type.lisp
4126 ** late-host-type.lisp -> late-type.lisp
4127 ** host-typep.lisp -> typep.lisp
4128 ** load.lisp -> target-load.lisp
4129 ** host-load.lisp -> load.lisp
4130 ** host-disassem.lisp -> disassem.lisp
4131 ** host-insts.lisp -> insts.lisp
4132 ** byte-comp.lisp -> target-byte-comp.lisp
4133 ** host-byte-comp.lisp -> byte-comp.lisp
4134 ** host-signal.lisp -> signal.lisp
4135 ** host-defstruct.lisp -> defstruct.lisp
4136 ** late-target-type.lisp -> deftypes-for-target.lisp
4137 Furthermore, several other previously target-only files foo.lisp (e.g.
4138 hash-table.lisp and random.lisp) have been split into a target-and-host
4139 foo.lisp file and a target-only target-foo.lisp file, with their key type
4140 definitions in the target-and-host part, so that the cross-compiler will
4141 know more about target types.
4142 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4143 gone away. In their place are various *BACKEND-FOO* variables
4144 corresponding to the slots of the old structure.
4145 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4146 into the target SBCL has been fixed.
4147 * The chill.lisp system for loading cold code into a running SBCL
4149 * Support for the CMU CL "scavenger hook" extension has been removed.
4150 (It was undocumented and unused in the CMU CL sources that SBCL was
4151 derived from, and stale in sbcl-0.6.1.)
4152 * Various errors in the cross-compiler type system were detected
4153 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4154 (enabling various consistency checks). Many of them were fixed,
4155 but some hard problems remain, so the compiler is back to
4156 running without *TYPE-SYSTEM-INITIALIZED* for now.
4157 * As part of the cross-compiler type system cleanup, I implemented
4158 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4159 * I have started adding UNCROSS calls throughout the type system
4160 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4161 on cross-compiler input files will be able to go away, and various
4163 * CONSTANTP now returns true for quoted forms (as explicitly required
4166 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4168 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4169 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4170 (MAKE-LIST -1). In the longer term, it ought to become true
4171 that declarations are assertions even at SAFETY 1. For now, it's not
4172 quite true even at SAFETY 3, but it's at least more nearly true..
4173 (Note that this change seems to increases the size of the system by
4174 O(5%) and to decrease the speed of the compiler by 20% or more.)
4175 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4176 for the problem of printing dozens of lines of distracting information
4177 about low-level system machinery as part of the top stack frame
4178 on entry to the debugger when an undefined function was called.
4179 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4180 is not reset to COMMON-LISP-USER.
4181 * Compilation of stuff related to dyncount.lisp has been made conditional
4182 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4183 smaller. The various dyncount-related symbols have been moved into
4184 a new "SB-DYNCOUNT" package.
4185 * tty-inspect.lisp has been renamed to inspect.lisp.
4186 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4187 feature has gone away. (When we eventually port to other flavors of
4188 libc and/or Unix, we'll try to make the differences between flavors
4189 invisible at the user level.)
4190 * Various other *FEATURES* tags, and/or their associated conditionals,
4191 have been removed if obsolescent, or given better documentation, or
4192 sometimes given more-mnemonic names.
4194 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4196 * tidied up "make.sh" script
4197 * tidied up system directory structure
4198 * better "clean.sh" behavior
4199 * added doc/FOR-CMUCL-DEVELOPERS
4200 * many many small tweaks to output format, e.g. removing possibly-confusing
4201 trailing #\. character in DESCRIBE-INSTANCE
4202 * (EQUALP #\A 'A) no longer signals an error.
4203 * new hashing code, including EQUALP hashing
4204 * tidied up Lisp initialization and toplevel
4205 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4206 * command line argument processing
4207 * added POSIX-GETENV function to deal with Unix-ish environment variables
4208 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4209 terminating SBCL on EOF
4210 * non-verbose GC by default
4211 * There is no more "sbcl" shell script; the sbcl file is now the C
4212 runtime executable (just like CMU CL).
4213 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4215 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4216 symbol and package information as Lisp native symbol and package objects
4217 instead of strings naming symbols and strings naming packages. This way,
4218 whenever packages are renamed (as in warm init), debug information is
4219 transformed along with everything else.
4220 * tweaked the optimization policy declarations which control the building
4221 of SBCL itself. Now, among other things, the system no longer saves
4222 source location debugging information. (This helps two problems at once
4223 by reducing SBCL size and by keeping SBCL from trying to look for its
4224 sources -- which may not exist -- when reporting errors.)
4225 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4226 debugging and testing purposes
4227 * cleaned up printing, making the printer call PRINT-OBJECT for
4228 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4229 methods, giving nearly-ANSI behavior
4230 * converted almost all special variables to use *FOO* naming convention
4231 * deleted PARSE-TIME functionality, since it can be done portably
4232 * moved some files out of cold init into warm init
4233 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4235 * regularized formatting of source files
4236 * added an install.sh script
4237 * fixed ridiculous memory usage of cross-compiler by making
4238 compiler/alloc.lisp not try to do pooling unless it can hook
4239 itself into the GC of the cross-compilation host. Now the system
4240 builds nicely on my old laptop.
4241 * added :SB-ALLOC in target-features.lisp-expr
4242 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4243 was not implemented)
4244 * re-did condition handling and note reporting in the compiler. Notes
4245 are no longer handled by signalling conditions. Style warnings
4246 and warnings are handled more correctly and reported in such a way
4247 that it's easy to find one or the other in your output (so that you
4248 can e.g. figure out which of many problems caused COMPILE-FILE to
4250 * changed the severity of several compiler warnings from full WARNING
4251 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4252 compiler note reporting so that it doesn't use the condition system
4253 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4254 COMPILE-FILE command)
4255 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4256 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4257 no longer supported, since their implementation was deeply intertwingled
4258 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4259 * removed bogus "support" for compiler macros named (SETF FOO), and
4260 removed the compiler macro for SETF INFO (but only after making a fool
4261 of myself on the cmucl-imp mailing list by posting a bogus patch for
4262 DEFINE-COMPILER-MACRO..)
4263 * Compiled files containing forms which have side effects on the Lisp
4264 reader (such as DEFPACKAGE forms) are now handled more correctly.
4265 (Compiler queuing of top level lambdas has been suppressed by setting
4266 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4267 * deleted various currently-unused source files, e.g. gengc.lisp. They
4268 may be added back at some point e.g. when porting to other architectures,
4269 but until they are it's distracting to distribute them and to try to
4271 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4272 there were so many of them they're just distractions, and UNCROSS is
4273 known to be able to handle the current sources
4274 * moved PROFILE functionality into TRACE, so that it will be clear
4275 how the wrapping and unwrapping of functions when you profile them
4276 interacts with the wrapping and unwrapping of functions when you
4277 trace them. (Actually, the functionality isn't there yet, but at least
4278 the interface specification is there. Hopefully, the functionality will
4279 arrive with some future maintenance release.)
4280 * removed host-oops.lisp
4281 * changed signature of QUIT function to allow UNIX-CODE argument
4282 * fixed READ-SEQUENCE bug
4283 * tweaked verbose GC output so that it looks more like the progress
4284 output that ANSI specifies for functions like LOAD
4285 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4286 * added <http://sbcl.sourceforge.com> to the banner information printed by