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.
23 changes in sbcl-1.0.5 relative to sbcl-1.0.4:
24 * incompatible change: removed writer methods for host-ent-name,
25 host-ent-addresses -- changing the values did not update the DNS
27 * minor incompatible change: changed experimental JOIN-THREAD interface
28 * documentation: the manual now lists reader and writer methods
29 in class slot documentation sections. (thanks to Richard M Kreuter)
30 * documentation: unwinding from asyncronous events has been
32 * documentation: SB-SYS:WITHOUT-GCING has been documented as unsafe
33 in multithreaded application code.
34 * optimization: GET-INTERNAL-REAL-TIME has been optimized on POSIX
35 platforms. (thanks to James Anderson for the optimization hint)
36 * optimization: REPLACE, SUBSEQ, and COPY-SEQ are now optimized in
38 * optimization: STRING-{EQUAL,LESSP,GREATER-P} and their NOT-
39 variants no longer cons.
40 * optimization: Direct calls to CHAR-{EQUAL,LESSP,GREATERP} and
41 their NOT- variants no longer cons.
42 * optimization: EQUAL hash tables no longer use SXHASH for objects
43 of all data types, but instead use an EQL hash for types for which
44 EQUAL is the same as EQL.
45 * optimization: the non-inlined generic versions of AREF and (SETF AREF)
46 are significantly faster.
47 * optimization: new STRING-OUTPUT-STREAM implementation is much
48 faster for large outputs and conses 30% less on average.
49 * enhancement: XREF information is now collected for references made
50 to global variables using SYMBOL-VALUE and a constant argument.
51 * enhancement: SIGINT now causes a specific condition
52 SB-SYS:INTERACTIVE-INTERRUPT to be signalled.
53 * bug fix: FILE-POSITION used to signal an error in some cases where
54 ANSI requires it to return NIL.
55 * bug fix: ADJUST-ARRAY is now interrupt-safe.
56 * bug fix: adding and removing fd-handlers is now interrupt-safe.
57 * bug fix: inlined calls to C now ensure 16byte stack alignment on
59 * bug fix: bad type declaration in the CLOS implementation has
60 been fixed. (reported by James Anderson)
61 * bug fix: incorrect ROOM reporting on x86-64 has been fixed.
62 (thanks to Lutz Euler)
63 * bug fix: DEFSETF now allows &ENVIRONMENT and disallows &AUX as
64 required by the CLHS. (reported by Samium Gromoff)
65 * bug fix: dead unbound variable references now signal an error.
66 (reported by Marco Monteiro)
67 * bug fix: / with an unused value was being deleted in safe code.
68 (thanks to Marco Monteiro and Kevin Reid)
69 * bug fix: number of characters that can be written onto a single
70 line in a file is unlimited.
71 * bug fix: some GC deadlocks caused by asynchronous interrupts have
72 been fixed by inhibiting interrupts for when GC is disbled.
73 * bug fix: some interrupt safety issues with GETHASH, (SETF
74 GETHASH), CLRHASH and REMHASH have been fixed.
75 * bug fix: binding *BREAK-ON-SIGNALS* to a value that is not a type
76 specifier no longer causes infinite recursion.
77 * bug fix: SB-EXT:MUFFLE-CONDITIONS declarations no longer trigger a
78 bogus warning in DEFMETHOD bodies. (reported by Kevin Reid)
79 * bug fix: an &environment argument with the correct variable information
80 is passed to macros that are expanded during byte compilation.
81 (reported by Samium Gromoff)
82 * bug fix: a logic error was causing the hash function for bignums to
83 have excessive amounts of collisions. (reported by Faré Rideau)
84 * bug fix: modifying the contents of an array could change the return
85 value of SXHASH on that array, which is only allowed for strings
86 and bit vectors. (bug introduced in 0.9.16)
87 * improvement: the x86-64/darwin port now passes all tests (except
88 for the debugger tests) but should still be considered
89 experimental until this is fixed.
90 * improvement: a style-warning is signaled for CASE (etc) clauses with
91 duplicate keys. (thanks to Kevin Reid)
92 * improvement: macos/x86 and macos/x86-64 now use mach exception
93 handlers for dealing with illegal instructions (for trapping and
94 error handling) and memory protection violations (for GC).
96 changes in sbcl-1.0.4 relative to sbcl-1.0.3:
97 * new platform: experimental support for x86-64/darwin (MacOS).
98 * incompatible change: the thread-safe (on most platforms) getaddrinfo
99 and getnameinfo sockets functions are used instead of gethostbyaddr
100 and gethostbyname, on platforms where the newer functions are available.
101 As a result, the ALIASES field of HOST-ENT will always be NIL on these
103 * change: runtimes with embedded cores (i.e. saved with :EXECUTABLE T)
104 don't print the startup banner, but behave as if --noinform was passed
105 as a command line argument. (thanks to Kevin Reid)
106 * new experimental feature: added JOIN-THREAD (by NIIMI Satoshi)
107 * optimization: code using alien values with undeclared types is much faster.
108 * optimization: the compiler is now able to open code SEARCH in more cases.
109 * optimization: more compact typechecks on x86-64 (thanks to Lutz Euler)
110 * bug fix: using standardized COMMON-LISP special variables as loop
111 variables no longer signals bogus package lock violations. (reported
113 * bug fix: declaring local loop variables to be of a range-limited type
114 such as (SINGLE-FLOAT 1.0 2.0) no longer causes a compile-time error.
115 (reported by Andras Simon)
116 * bug fix: >= and <= gave wrong results when used with NaNs. (Some NaN
117 bugs remain on x86-64.)
118 * bug fix: the #= and ## reader macros now interact reasonably with
119 funcallable instances.
120 * bug fix: type-checks for function arguments were compiled using the
121 compiler policy settings of the wrong lexical environment (in 1.0.2
123 * bug fix: SHADOW accepts characters as string designators, as required
124 by the spec (thanks to Eric Marsden)
125 * bug fix: fixed GC safety issues when foreign functions are called with
126 non-base strings as arguments
127 * bug fix: more consistent error output for fatal-compiler-warnings, like
129 * bug fix: functions with proper names were showing up as NIL in
130 backtraces (reported by Edi Weitz, regression in 1.0.2)
132 changes in sbcl-1.0.3 relative to sbcl-1.0.2:
133 * new platform: NetBSD/PPC. (thanks to Aymeric Vincent)
134 * optimization: calls of the form (AREF FOO (+ INDEX <constant>)) now
135 produce more efficient code on the x86 if the compiler can determine
136 that (+ INDEX <constant>) does not require a bounds check and FOO
137 has an element type at least 8 bits wide.
138 * bug fix: references to undefined variables are handled the same way
139 in toplevel forms as in the normal compiler
140 * bug fix: the build scripts again work with non-bash /bin/sh (thanks
142 * bug fix: use "gtar" as the asdf-install *TAR-PROGRAM* on NetBSD
143 (thanks to Jon Buller)
144 * improvement: faster compilation times for complex functions
145 * improvement: added readlink support to SB-POSIX (thanks to Richard
148 changes in sbcl-1.0.2 relative to sbcl-1.0.1:
149 * improvement: experimental support for mach exception handling on
150 x86/macos. requires building with :MACH-EXCEPTION-HANDLER feature
152 * improvement: support for GBK external format.
153 (thanks to Chun Tian (binghe))
154 * improvement: the debugger now displays variables that have been closed
155 over, in code compiled with (DEBUG 2) or higher
156 * improvement: support for executable cores on NetBSD (thanks to
158 * new feature: added a RESTART-FRAME debugger command
159 * new feature: new generic function SB-GRAY:STREAM-FILE-POSITION can
160 be used to provide an implementation for FILE-POSITION on Gray streams
161 (thanks to Eric Marsden)
162 * new feature: add syslog, openlog and closelog support to SB-POSIX
163 (thanks to Richard Kreuter)
164 * optimization: the function call overhead in code compiled with
165 a high DEBUG optimization setting is significantly
166 * bug fix: an error is signaled for attempts to use READ-SEQUENCE
167 for a (SIGNED-BYTE 8) stream and (UNSIGNED-BYTE 8) vector, or vice versa.
168 (thanks to Tony Martinez)
169 * bug fix: the initforms for DEFMETHOD &AUX parameters are only
170 evaluated once (reported by Kevin Reid)
171 * bug fix: the :SHOW-PROGRESS keyword parameter to SB-SPROF:WITH-PROFILING
172 works again (thanks to Kilian Sprotte)
173 * bug fix: an error is signaled for tagbodies with duplicate tags
174 (thanks to Stephen Wilson)
175 * bug fix: NIL can be used as a tagbody tag (thanks to Stephen Wilson)
176 * bug fix: Win32 port can now handle foreign code unwinding Lisp
177 stack frames from alien callbacks.
178 * bug fix: ATANH returned incorrect results on win32 (thanks to Pierre Mai)
179 * bug fix: SBCL works on Linux/ppc systems with a kernel configured to use
180 65k pages (thanks to David Woodhouse)
181 * bug fix: fix SB-POSIX dirent and socket on NetBSD (thanks to Richard Kreuter)
183 changes in sbcl-1.0.1 relative to sbcl-1.0:
184 * new platform: FreeBSD/x86-64, including support for threading.
185 * new feature: the compiler stores cross-referencing information
186 abount function calls (who-calls), macroexpansion (who-macroexpands)
187 and special variables (who-binds, who-sets, who-references) for code
188 compiled with (< SPACE 3). This information is available through the
189 sb-introspect contrib.
190 * new feature: users may subclass SEQUENCE, and have instances of
191 these classes interoperate with standard Common Lisp functions if
192 a number of methods are defined. (This feature is experimental
193 and the interface subject to change based on feedback from SBCL
194 users and the general community)
195 * improvement: sb-sprof traces call stacks to an arbitrary depth on
196 x86/x86-64, rather than the previous fixed depth of 8
197 * improvement: another pthread back-end of mutex "pthread-futex".
198 * bug fix: non-ascii command-line arguments are processed correctly
199 (thanks to Yaroslav Kavenchuk)
200 * bug fix: non-required arguments were not passed correctly when a method
201 defined using DEFMETHOD was called from a mop-generated method using
202 CALL-NEXT-METHOD (reported by Pascal Costanza)
203 * bug fix: recursion is now permitted in accessors through
204 SLOT-UNBOUND. (reported by Pascal Costanza)
205 * bug fix: an error was signaled at startup if the HOME environment
206 variable was defined, but had an empty value (reported by Peter Van Eynde)
207 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
208 signal a PROGRAM-ERROR, not a BUG.
209 * bug fix: SB-POSIX:READDIR works when built with large file support.
210 * bug fix: ENOUGH-NAMESTRING works relative to #p"/" as well. (thanks
212 * enhancement: DESTRUCTURING-BIND lambda-list uses &BODY instead of &REST
213 for better automatic indentation support. (thanks to Matt Pillsbury)
214 * optimization: loading generic functions no longer takes O(n^2) time,
215 proportional to the amount of methods in the generic function
216 (reported by Todd Sabin and Jeremy Brown)
217 * optimization: the FIND and POSITION family of sequence functions
218 are significantly faster on arrays whose element types have been
220 * improvements to the Windows port:
221 ** Intermittent heap corruption problems have been fixed. (thanks
222 to Alastair Bridgewater)
223 ** TRACE :ENCAPSULATE NIL (and function end breakpoints)
225 ** Lisp is able to unwind foreign exception frames from alien
226 callbacks. (thanks to Alastair Bridgewater)
228 changes in sbcl-1.0 relative to sbcl-0.9.18:
229 * improvement: experimental support for threading on FreeBSD/x86.
230 (thanks to NIIMI Satoshi)
231 * improvement: runtime option --dynamic-space-size can be used
232 to set the size of the dynamic space reserved on startup.
233 * improvement: floating point modes in effect are now saved in
234 core, and restored on startup.
235 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
236 startup, not time since first call to GET-INTERNAL-REAL-TIME.
237 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
238 threads are not running after *SAVE-HOOKS* have run.
239 * improvement: writes to CLOS instance slots are type-checked in code
240 compiled with (SAFETY 3)
241 * improvement: floating-point exception handling on FreeBSD (thanks to
243 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
244 (thanks to Zach Beane)
245 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
247 * improvement: added support for the Shift-JIS external format.
248 (contributed by NIIMI Satoshi)
249 * improvement: callbacks are supported on Linux/PPC. (thanks to
251 * bug fix: compiler bug triggered by a (non-standard) VALUES
252 declaration in a LET* was fixed. (reported by Kaersten Poeck)
253 * bug fix: file compiler no longer confuses validated and already
254 dumped structurres. (reported by Kaersten Poeck)
255 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
256 fill-pointer signals a type-error as required. (thanks to
258 * bug fix: disassemly of funcallable instances works.
259 * bug fix: single stepping on PPC.
260 * bug fix: fix thread-safety problems in the type system (generally
261 manifesting as nonsensical errors like "STRING is a bad type specifier
262 for sequences" or "The value 1 is not of type FIXNUM")
263 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
264 (reported by Josip Gracin)
265 * bug fix: an error is signaled for attempts to displace arrays with
266 incompatible element types (thanks to Mario Mommer)
267 * bug fix: more correct handling of wide characters in debug info
268 (bug reported by Attila Lendvai and fixed by Juho Snellman)
269 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
270 and don't cause extra consing
271 * optimization: MAP and MAP-INTO are significantly faster on vectors
272 whose elements types have been declared.
273 * Improvements to SB-SPROF:
274 ** Support for allocation profiling
275 ** Reduced profiling overhead, especially for long profiling runs
276 * Improvements to the Windows port:
277 ** floating point exceptions are now reported correctly.
278 ** stack exhaustion detection works partially.
279 ** more accurate GET-INTERNAL-REAL-TIME.
280 ** better RUN-PROGRAM behaviour in case of errors in the child
282 ** PROBE-FILE now simplifies pathnames correctly.
283 ** DIRECTORY now works correctly with :WILD-INFERIORS.
284 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
285 1st 1970 (although time timezone data will be unreliable).
286 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
288 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
289 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
290 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
292 * bug fix: two potential GC deadlocks affecting threaded builds.
293 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
294 returns T (reported by Anton Kazennikov)
295 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
296 with non-variable places
297 * bug fix: remove a race condition in the setting of
298 funcallable-instance functions, this should make threaded CLOS
299 code more stable against memory faults.
300 * bug fix: corruption of specials when unbinding is interrupted by an
301 asynchronous unwind (reported by Hannu Koivisto)
302 * improvement: the debugger will now also display local variables that
303 are only used once, for code compiled with a DEBUG optimization quality
306 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
307 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
308 * incompatible change: External-format support for FFI calls. The
309 SB-ALIEN:C-STRING no longer implies an ASCII
310 external-format. Instead the string is subject to external-format
311 conversion. Additionally return values of type SB-ALIEN:C-STRING
312 are by default of type (SIMPLE-ARRAY CHARACTER), not
313 SIMPLE-BASE-STRING. For an alien type that behaves like the old
314 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
315 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
316 * incompatible change: SB-EXT package no longer contains the
317 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
318 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
320 * incompatible change: the single-stepper is no longer available
321 on Alpha, Mips and Sparc platforms.
322 * minor incompatible change: the direct superclasses of
323 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
324 not (STANDARD-OBJECT FUNCTION). This makes the
325 class-precedence-lists of GENERIC-FUNCTION and
326 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
328 * minor incompatible change: the default stream external format on
329 non-unicode SBCL is no longer detected from the locale, but is always
331 * new feature: Add a version of evaluator that uses an interpreter instead
332 of the compiler. EVAL still uses the compiler by default, to switch it
333 to use the interpreter, set the value of the variable
334 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
335 * minor incompatible change: the single-stepper REPL has been merged
336 with the normal debugger (see the "Stepping" heading of the debugger help
337 for more details). The debugger command STEP will no longer switch
338 to the single-stepper REPL.
339 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
340 for a type now works.
341 * bug fix: loading of default sysinit file works. (thanks to Leonid
343 * bug fix: better detection of circularities in the file-compiler.
344 (reported by Marco Monteiro)
345 * bug fix: the CL pathname functions now work with files that have
346 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
347 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
348 systems with Unix98 pty semantics.
349 * bug fix: ASDF-INSTALL will now work with bsd tar.
350 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
352 * bug fix: timers expiring in dead threads no longer cause a
353 type-error (reported by Paul "Nonny Mouse").
354 * bug fix: thanks to more lightweight single-stepper instrumentation,
355 code compiled with (DEBUG 3) will compile and execute significantly faster,
356 and will have more accurate type-inferencing than before
357 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
358 whose bindings are modified
359 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
360 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
361 ** replace dummy implementations of CL:MACHINE-INSTANCE and
362 CL:SOFTWARE-VERSION with proper version
364 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
365 * feature: implemented the READER-METHOD-CLASS and
366 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
367 as specified by AMOP.
368 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
370 * optimization: faster LOGCOUNT implementation on x86 and x86-64
371 (thanks to Lutz Euler)
372 * optimization: hashing of general arrays and vectors has been
373 improved. (reported by Any Fingerhut)
374 * enhancement: SB-INTROSPECT is now able to find definitions of
375 profiled functions. (thanks to Troels Henriksen)
376 * enhancement: compiler-macro expansion applies now to FUNCALL forms
377 as well, allowing compiler-macros for SETF-functions to expand.
378 * enhancement: step-instrumentation no longer wraps known
379 single-value functions with multiple-value context, allowing
380 better type inference.
381 * fixed bug #337: use of MAKE-METHOD in method combination now works
382 even in the presence of user-defined method classes. (reported by
383 Bruno Haible and Pascal Costanza)
384 * fixed bug #339(c): if there are applicable methods not part of any
385 long-form method-combination group, call INVALID-METHOD-ERROR.
386 (reported by Bruno Haible)
387 * fixed bug #361: the :FUNCTION initarg in the protocol for
388 initialization of methods can now be used to override
389 internally-produced optimized functions. (reported by Bruno
391 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
392 system-provided lambda expression no longer cause warnings about
393 unbound #:|pv-table| symbols.
394 * bug fix: improved the handling of type declarations and the
395 detection of violations for keyword arguments with non-constant
397 * bug fix: potentially erronous calls to PATHNAME and
398 MERGE-PATHNAMES were being flushed in some cases.
399 (reported by Richard Kreuter)
400 * bug fix: compiled calls to TYPEP were mishandling obsolete
401 instances. (reported by James Bielman and Attila Lendvai)
402 * bug fix: format strings with ~> without matching ~< no longer
403 trigger an AVER, but signal an understandable error instead.
404 (reported by Antonio Martinez)
405 * bug fix: specifying an output-file without a pathname-type for
406 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
407 of input-file instead of "fasl". (reported by Robert Dodier)
408 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
409 (reported by James Y Knight).
410 * bug fix: compiler-macros-function did not consider the environment
411 argument for shadowing by local functions.
412 * bug fix: compiler-macros expansion was inhibited by local INLINE
414 * bug fix: inline expansions of known functions were subject to
415 step-instrumentation in high debug policies, leading to problems
417 * bug fix: compiler failed to differentiate between different CONS
419 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
420 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
421 * bug fix: #368: incorrect use of expressed vs. upgraded array
423 * bug fix: #306a: more precise unions of array types.
424 * thread-safety improvements:
425 ** CONDITION-WAIT could return early on Linux, if the thread was
426 interrupted and subsequently continued with SIGCONT.
427 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
429 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
430 * added support for the ucs-2 external format. (contributed by Ivan
432 * minor incompatible change: pretty printing of objects of type
433 (cons symbol) is, in the default pprint-dispatch-table, now
434 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
436 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
437 called later in a class's lifetime, possibly as late as when the
438 first instance of the class is created. Previously,
439 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
440 class became finalizeable.
441 * fixed bug: FILE-POSITION sometimes returned inconsistent results
442 for multibyte external-format streams. (thanks to "vbzoli")
443 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
444 with :ALLOCATION :CLASS inherited from superclasses of the
446 * fixed bug: anonymous classes can now be created using the :NAME
447 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
448 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
449 * fixed bug: core-files saved with :EXECUTABLE T can again be
450 executed when SBCL_HOME isn't set. (reported by James Knight)
451 * fixed bug: toplevel LOCALLY forms with declarations could
452 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
453 * fixed bug: printing from several different threads using different
454 values of *print-case* could cause invalid output, due to
455 some internal special variables of the printer not being bound
456 thread-locally (reported by Max Mikhanosha)
457 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
458 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
459 (reported by Pascal Costanza)
460 * fixed bug: FINALIZE-INHERITANCE is called from
461 REINITIALIZE-INSTANCE on classes when the class has previously
462 been finalized, as required by AMOP.
463 * minor code generation optimizations:
464 ** better register allocation in CLOS dispatching functions
465 ** overflow detection when coercing signed bytes to fixnums on x86-64
466 ** is now implemented with one IMUL instruction instead of three shifts
467 ** more efficient bit-vector access on x86 and x86-64
468 ** more efficient access to raw structure slots on x86 and x86-64
469 * fixed some bugs revealed by Paul Dietz' test suite:
470 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
473 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
474 * feature: thread support on Solaris/x86, and experimental thread support
476 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
478 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
479 default method for SLOT-UNBOUND.
480 * minor incompatible change: prevent the user from specializing the
481 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
482 somewhat counter to the intent of the protocol, I (CSR) think, and
483 additionally it just doesn't work in SBCL as currently
484 implemented, thanks to optimizations (that are always valid for
485 the other three SLOT-VALUEish functions, but not for the setter).
486 * minor incompatible change: the :SB-LDB feature is now enabled by
487 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
488 the low-level debugger.
489 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
490 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
491 down to an SB-SYS:FD-STREAM, allowing direct communication in
492 more cases. Temporary files and pipes are still used as a fallback
494 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
495 on the non-reentrant C functions localtime(3) and gmtime(3).
496 * bug fix: global optimization policy was not visible in LOCALLY and
498 * bug fix: class objects can be used as specializers in methods.
499 (reported by Pascal Costanza)
500 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
501 with a type error. (reported by blitz_ on #lisp)
502 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
503 failed with a type error. (reported by Pascal Bourguignon)
504 * bug fix: merging pathnames against defaults with :DIRECTORY
505 starting with '(:RELATIVE :BACK) should preserve the :BACK.
506 (reported by James Y Knight)
507 * bug fix: saving large (>2GB) cores on x86-64 now works
508 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
509 constant index and a (simple-array (signed-byte 32)) array
510 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
511 error (patch by Robert J. Macomber)
512 * feature: TIME now displays the amount of run-time spent in GC
513 * bug fix: The debugger now does a better job of respecting
514 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
515 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
516 workaround for bug 403.)
517 * bug fix: floating point exception handling now works on FreeBSD
518 (thanks to NIIMI Satoshi)
519 * fixed some bugs revealed by Paul Dietz' test suite:
520 ** MISC.641: LET-conversion were not supposed to work in late
522 * improvements to the Win32/x86 port:
523 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
524 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
526 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
527 * new feature: source path information is generated for macro-expansion
528 errors for use in IDE's like Slime (thanks to Helmut Eller)
529 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
530 * bug fix: compiler does not loop forever on an invalid type in
532 * improvement: compilation of most CLOS applications is significantly
534 * optimization: added a limited bytecode compiler for simple toplevel
535 forms, speeding up compilation and FASL loading
536 * bug fix: the statistical profiler now properly distinguishes anonymous
539 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
540 * minor incompatible change: in sbcl-0.9.11 (but not earlier
541 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
542 into subclasses of the finalized class. Now user calls to
543 FINALIZE-INHERITANCE finalize just the one class, and calls by the
544 system return before any subclasses are finalized.
545 * minor incompatible change: The reader no longer ignores errors
546 regarding non-existent packages in #+ and #- feature tests.
547 * new feature: command line options --no-sysinit, --no-userinit to
548 inhibit loading the corresponding init files
549 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
550 for sending data through UDP sockets (thanks to François-René Rideau)
551 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
552 error is signalled instead (thanks to François-René Rideau)
553 * minor incompatible change: Error signalling behaviour of lexical
554 operations violating package locks has changed slightly. Refer to
555 documentation on package locks for details.
556 * enhancement: EVAL can process IF-expressions without resorting to the
558 * bug fix: Some operations involving SIN, COS, or TAN weren't being
559 constant-folded properly due to missing out-of-line functions.
560 (reported by Mika Pihlajamäki)
561 * bug fix: LISTEN sometimes returned T even in cases where no data was
562 immediately available from the stream
563 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
564 were reversed. (reported by Levente Mészáros)
565 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
566 when given a vector displaced to an adjustable array. (reported
568 * bug fix: derivation of float boundaries from numbers outside the
569 appropriate float range (reported by John Wiseman)
570 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
572 * bug fix: precomputing cache entries for generic functions with
573 some subclasses of specializers as yet invalid does not attempt to
574 fill a cache line with a negative offset. (reported by Levente
576 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
577 allow condition class objects as arguments to DOCUMENTATION and
578 (SETF DOCUMENTATION); only find and set documentation for
579 structure names for the STRUCTURE doc-type. (suggested by Gary
581 * improvements to the Win32/x86 port:
582 ** (user-homedir-pathname) and default initialization file
583 locations now know about the user's "Documents and Settings"
584 directory (thanks to Yaroslav Kavenchuk)
585 ** run-program is implemented (thanks to Mike Thomas)
586 ** sockets support (thanks to Timothy Ritchey)
587 ** better backtrace support (thanks to Alastair Bridgewater)
588 ** sb-grovel supported
589 ** asdf-install and sb-posix work somewhat
590 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
591 * improvements to the Solaris/x86 port:
592 ** works on Solaris 11/Solaris Express
593 ** floating-point exception handling support
594 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
595 * fixed some bugs revealed by Paul Dietz' test suite:
596 ** REMOVE-METHOD returns its generic function argument even when
597 the method is not one of the generic functions' methods.
598 ** objects declared as MEMBER types can be admissible arguments to
600 ** printing characters should simply be printed by the FORMAT ~:C
602 ** compiler failure when compiling functions with hairy constant
603 defaults for optional parameters.
604 ** compiler produces wrong code when MAYBE-INLINE-expanding a
605 function, which is already optimized.
607 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
608 * new platform: experimental support for SBCL x86/Darwin, including
609 MacOS X 10.4.5 on Intel.
610 * new feature: Unicode character names are now known to the system
611 (through CHAR-NAME and NAME-CHAR).
612 * new feature: the filesystem location of SBCL's core file is
613 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
614 * minor incompatible change: the contrib modules SB-POSIX and
615 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
616 this change is to make it easier to distribute
617 location-independent binaries.
618 * bug fix: as implied by AMOP, standardized classes no longer have
619 slots named by external symbols of public packages. (reported by
621 * optimization: calling functions via constant symbols -- as in
622 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
623 via the function object as in (FUNCALL #'FOO).
624 * optimization: on x86 and x86-64, the calling convention for the
625 case of dealing with an unknown number of values has been altered
626 to be friendlier to the prediction heuristics implemented,
627 particularly with reference to CALL and RET pairing. (thanks to
628 Alastair Bridgewater)
629 * optimization: on x86, the code for access to thread-local symbol
630 values and binding/unbinding of thread-local symbols is smaller.
631 (thanks to Alastair Bridgewater)
632 * enhancement: CONSTANTP is now able to determine constantness of
633 more complex forms, including calls to constant-foldable standardized
634 functions and some special forms beyond QUOTE.
635 * fixed bug: occasional GC crashes on Solaris/x86
636 * optimization: x86-64 supports stack allocation of results of simple
637 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
638 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
639 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
640 (thanks to James Knight)
641 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
642 by the standard (thanks to Stephen Compall)
644 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
645 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
646 be used for bundling the runtime and the core file into one
647 executable binary. This feature is not currently supported on all SBCL
648 platforms. (thanks to James Bielman and NIIMI Satoshi)
649 * new feature: a generational or ephemeral garbage collector is now
650 the default on the PowerPC platform (both Linux and Darwin). The
651 old Cheney (stop and copy) collector is a build-time option.
652 (thanks to Cyrus Harmon, after Raymond Toy)
653 * minor incompatible change: the method by which SBCL finds its
654 contributed modules has changed; it no longer relies on symbolic
655 links from an $SBCL_HOME/systems directory, but searches directly
656 in the subdirectories of $SBCL_HOME.
657 * enhancement: the dynamic heap size on the Linux/PPC platform is
658 markedly larger, even using the older Cheney garbage collector.
659 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
660 certain complicated string types. (reported by Gary King)
661 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
662 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
663 * fixed bug: DOCUMENTATION on structures no longer signals an
664 error if no structure type of the right name exists. (reported by
666 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
667 applicable non-standard primary or :AROUND method on
668 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
669 no longer cause unbound variable errors. (reported by Kevin Reid)
670 * fixed bug: metacircle resolution in cases where methods have slots
671 added before the slots from STANDARD-METHOD. (reported by Jean
673 * fixed bug: the Power PC assembly code for calling into lisp
674 sometimes computed its return address wrongly (depending on the
675 15th bit of the address, fixed at link time). This used to
676 manifest itself in a segmentation violation while building PCL.
677 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
678 many others over the years)
679 * fixed bug: ROOM no longer reports silly numbers for stack usage if
680 the stack pointer (treated as a signed integer) is negative.
681 (thanks to Peter van Eynde)
683 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
684 * new platform: experimental support for the Windows operating
685 system has been added. (thanks to Alastair Bridgewater)
686 * fixed several bugs in and robustified the PPC FFI (including
687 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
688 * bug fix: allow non-simple string symbol names (reported by Paul
690 * bug fix: interrupt handling on NetBSD (thanks to Richard M
692 * bug fix: saving a core corrupted callbacks on x86/x86-64
693 * bug fix: closed a loophole in metacircularity detection and
694 grounding in the PCL implementation of CLOS.
695 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
696 (reported by tomppa on #lisp)
697 * bug fix: clear the direction flag on Lisp -> C transitions, as
698 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
699 (reported by Andrej Grozin and Hendrik Maryns)
700 * optimization: major improvements to GC efficiency on GENCGC platforms
701 * optimization: faster implementation of EQUAL
702 * optimization: emit more efficient opcodes for some common
703 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
704 * optimization: several other minor code-generation improvements on x86-64
705 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
707 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
708 * minor incompatible change: (SETF CLASS-NAME) and (SETF
709 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
710 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
711 by ANSI as a generic function, and for consistency (SETF
712 GENERIC-FUNCTION-NAME) is treated likewise.
713 * fixed bug #233.b: make constraint propagation notice when a variable
714 value is changed after it is referenced but before it is used
715 * fixed bug #296: no more arbitrary behaviour from filenames with
716 odd characters as --load arguments. (reported by Adam Warner)
717 * fixed bug #390: :CHARACTER-SET pathname components now work as
718 expected. (reported by Tim Daly Jr)
719 * fixed bug #391: complicated :TYPE intersections in slot
720 definitions no longer cause an error in PCL internals.
721 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
722 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
723 returning the number of octets which would be written to the
724 file-stream. (thanks to Robert J. Macomber)
725 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
726 arguments to the internal stream functions. (thanks to David
728 * bug fix: stack exhaustion is now handled on the x86/SunOS
729 platform. (thanks to Daisuke Homma)
730 * bug fix: more accurate ROOM results on GENCGC platforms
731 * optimization: improved type inference for arithmetic-for
732 index variables in LOOP
733 * optimization: faster floating-point SQRT on x86-64
734 * fixed some bugs revealed by Paul Dietz' test suite:
735 ** DOCUMENTATION returns NIL instead of "" for method combinations
736 that don't have a docstring
738 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
739 * minor incompatible change: (SETF CLASS-NAME) and (SETF
740 GENERIC-FUNCTION-NAME) are no longer generic functions, and
741 therefore are not customizeable by user code (as seems to be at
742 least permitted and maybe required by AMOP). As a consolation,
743 however, the SBCL implementation of these functions now calls
744 REINITIALIZE-INSTANCE as specified by AMOP.
745 * bug fix: slot-definition documentation is propagated as per ANSI
746 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
747 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
748 argument, as do eslotd initialization methods. (from Pascal
749 Costanza's "Closer" project)
750 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
751 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
753 * bug fix: it is now possible to have more than one subclass of
754 STANDARD-GENERIC-FUNCTION without causing stack overflow.
755 (reported by Bruno Haible, Pascal Costanza and others)
756 * bug fix: the dependent update protocol now works for generic
757 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
759 * bug fix: condition-class instances corresponding to
760 DEFINE-CONDITION forms are now created eagerly. (reported by
761 Kalle Olavi Niemitalo on comp.lang.lisp)
762 * bug fix: floating point printing is more accurate in some
763 circumstances. (thanks to Simon Alexander)
764 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
765 merged with *DEFAULT-PATHNAME-DEFAULTS*.
766 * bug fix: callbacks on OS X now preserve stack-alignment.
767 (thanks to Cyrus Harmon)
768 * enhancement: the x86-64 disassembler is much better at
769 disassembling SSE instructions. (thanks to Lutz Euler)
770 * enhancement: CHECK-TYPE on a variable now allows type-inference
771 (thanks to Vincent Arkesteijn)
772 * optimization: improved performance of EUC-JP external format.
773 (thanks to NIIMI Satoshi)
774 * optimization: performance improvements to IO on file streams of
775 :ELEMENT-TYPE CHARACTER
776 * optimization: much faster memory allocation on x86-64
777 * optimization: faster garbage collections (latency and throughput)
779 * optimization: faster bignum subtraction and division on x86 and x86-64
780 (thanks to Lutz Euler)
781 * optimization: more accurate type-inference for loops that use a
782 floating point index variable or a negative step.
784 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
785 * bug fix: add a workaround to SBCL looping infinitely at startup on
786 Linux kernels with apparently buggy implementations of personality().
787 (thanks to Svein Ove Aas)
788 * bug fix: Unicode symbols are correctly printed in LDB backtraces
789 (thanks to David Lichteblau)
790 * bug fix: local bindings shadow global symbol macros for
791 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
792 * optimization: non-open coded uses of numeric comparison operators
793 (e.g. >) no longer cons when called with more than one parameter
794 on platforms supporting dynamic-extent allocation.
795 * enhancement: saving cores with foreign code loaded is now supported
796 on MIPS/Linux in addition to the previously supported platforms.
797 * bug fix: FIND-RESTART now tests for activity, not applicability when given
798 a restart object as identifier. (reported by Helmut Eller for CMUCL)
799 * bug fix: division by zero in sb-sprof when no samples were collected
800 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
801 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
802 (thanks to Alexander Kjeldaas)
803 * new feature: ignoring the return values of destructive functions
804 like NREVERSE signals a compile-time style-warning.
805 (thanks to Kevin Reid)
806 * new feature: the alignment of alien structure fields can be
807 explicitly specified. (thanks to Cyrus Harmon)
808 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
809 and dump core on SIGQUIT
811 ** incompatible change: threads do not inherit values of specials
812 from their parents (see manual)
813 ** bug fix: threads stacks belonging to dead threads are freed by the
814 next exiting thread, no need to gc to collect thread stacks anymore
815 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
816 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
817 ** bug fix: dynamic variable and thread start related gc lossage
818 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
820 * fixed some bugs revealed by Paul Dietz' test suite:
821 ** SUBTYPEP is slightly more accurate on heinously complicated
822 CONS types where some of the members have uncertain (in the
823 NIL, NIL sense) type relationships to each other.
825 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
826 no longer purified unless :PURIFY T is explicitly specified.
827 ** Non-purified cores are significantly smaller than before
829 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
830 * new feature: timers based on Zach Beane's excellent timer package
831 * added support for the following external formats: koi8-u,
832 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
833 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
834 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
835 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
836 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
837 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
838 * incompatible change: a threaded SBCL will no longer revert to
839 non-threaded mode on non-NPTL systems, but refuse to start entirely.
840 * bug fix: interrupts are disabled until startup is complete; no
841 more sigsegvs when receiving a signal to soon
842 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
844 * bug fix: add a workaround for the memory randomization features in
845 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
846 workaround will only be in effect on systems with the proc filesystem
848 * bug fix: printing objects of type HASH-TABLE signals a
849 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
851 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
852 have been running for over 50 days. (reported by Gilbert Baumann)
853 * bug fix: the logic for getting names of functions gets less
854 confused when confronded with alternate-metaclass
855 funcallable-instances. (reported by Cyrus Harmon)
856 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
857 consistent, even on internal alternate-metaclass objects.
858 * bug fix: flush closure information collected by physical
859 environment analysis prepass before the main pass. (bug reported
861 * bug fix: compiler pack phase does not modify a hashtable, which is
862 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
863 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
864 may be expanded. (reported by Alexander <malishev> on c.l.l)
865 * bug fix: no more style-warnings when compiling code using LAST
866 under high-SPEED low-SPACE settings. (reported by David Wallin
868 * fixed some incompatibilities between SBCL's MOP and the MOP
870 ** the METAOBJECT class is now implemented;
871 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
872 STANDARD-OBJECT, as required;
873 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
874 now compatible (as required by VALIDATE-SUPERCLASS); there
875 remains a consistency requirement over the presence or absence
876 of the FUNCTION class in the superclass list of finalized
877 classes; see the manual for more details;
878 ** the :AROUND method for COMPUTE-SLOTS on
879 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
880 requested slot ordering.
882 ** bug fix: parent thread now can be gc'ed even with a live
884 ** bug fix: binding a special with PROGV to no value is not
885 the same as that symbol not having been bound (thanks to
887 ** bug fix: binding specials is thread safe (thanks to
889 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
890 and SB-SPROF do not die with 'no handler for signal XX in
891 interrupt_handle_now(..)' anymore
892 ** bug fix: WITH-TIMEOUT works with multiple running threads
893 * fixed some bugs revealed by Paul Dietz' test suite:
894 ** ENSURE-GENERIC-FUNCTION should take a method class object for
895 the :method-class keyword argument.
897 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
898 * new port: the Solaris operating system on x86 processors is now
899 mostly supported, though some rough edges in the environment
900 remain. (thanks to Daisuke Homma)
901 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
902 space for its heap. (thanks to Thiemo Seufer)
903 * optimization: SBCL on MIPS platforms now supports dynamic-extent
904 closures. (thanks to Thiemo Seufer)
905 * minor incompatible change: eof selects abort in the debugger.
906 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
907 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
909 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
910 deprecated, and will go away in a future revision of SBCL.
911 * minor incompatible change: GC-ON and GC-OFF are no longer
912 implemented with a counter, it does not matter how many times gc
913 is switched on or off
914 * bug fix: discriminating functions for generic function classes
915 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
916 make invalid assumptions about method precedence order. (reported
918 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
919 platforms. (thanks to Thiemo Seufer)
920 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
921 * bug fix: correct pathname printing with printer escaping is on.
922 (thanks to Kevin Reid)
923 * bug fix: complex VOP definitions in "user-space" no longer trigger
924 package locks. (reported by Zach Beane)
925 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
926 for funcallable-instance functions, and is no different from
928 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
929 characters in the current readtable. (reported by Nicholas Neuss)
930 * bug fix: SUBTYPEP on various CONS types returns more a more
931 accurate acknowledgment of its certainty.
932 * optimizations: REMOVE-DUPLICATES now runs in linear time on
933 lists in some cases. This partially fixes bug 384.
934 * flush all standard streams before prompting in the REPL and the
936 * bug fix: signal handling and triggering gc do not conflict
937 directly anymore, in particular a high frequency sb-sprof does
938 not prevent gc from running
939 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
940 approximation for timezone and DST information between the
941 universal time epoch and the smallest negative 32-bit time_t.
942 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
943 year 1899 so long as the encoded time is non-negative.
944 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
945 the correct answer for non-constant rotate amounts when performing
946 an inline 32-bit rotation.
948 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
949 there is only one thread in the session
950 ** bug fix: memory leak for streams created in one thread and
951 written to in another
952 ** bug fix: lockup when compiled with gcc4
953 ** bug fix: race that allows the gc to be triggered when gc is
955 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
956 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
958 ** bug fix: finished threads are gc'ed properly
959 * fixed some bugs revealed by Paul Dietz' test suite:
960 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
961 has arguments with a different set of applicable methods from
962 the orignal arguments.
963 ** The type error thrown by MAP now has a correct expected-type
965 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
966 name a compiled function.
967 ** Three MISC tests where a large bignum was improperly coerced to
968 a float that couldn't represent that bignum during type
969 derivation were fixed.
970 ** SUBTYPEP can now handle types involving the negation of a
971 list-form FUNCTION type.
972 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
973 as (COMPLEX (AND RATIO (NOT FIXNUM))).
974 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
976 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
977 * New feature: Experimental support for bivalent streams: streams
978 opened with :element-type :default now allow character and binary
979 (unsigned-byte 8) I/O
980 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
981 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
983 * bug fix: no more highly sporadic "couldn't check whether ~S is
984 readable" when reading a stream and an interrupt hits in the middle
985 of a select system call
986 * compiler better recognizes complex arrays (reported by Eduardo
988 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
989 for variables on SBCL built with linkage-tables. (reported by Luis
991 * various error reporting improvements.
992 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
993 (Thanks to Thiemo Seufer)
994 * bug fix: nested reader invokations work correctly
995 * bug fix: it is possible to have simultaneous references to foreign
996 code and foreign data with the same name.
998 ** added x86-64 support
999 ** incompatible change: the threading api now works with thread
1000 objects instead of thread ids
1001 ** bug fix: threads are protected from signals and interruption when
1002 starting up or going down
1003 ** bug fix: a race where an exiting thread could lose its stack to gc
1004 ** bug fix: don't halt on infinite error in threads if possible
1005 ** fixed numerous gc deadlocks introduced in the pthread merge
1006 ** bug fix: fixed thread safety issues in read and print
1007 ** bug fix: debugger doesn't hang on session lock if interrupted at
1008 an inappropriate moment
1009 ** bug fix: run-program is now thread safe(r)
1010 ** bug fix: inner with-recursive-lock no longer releases the mutex
1011 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
1012 * fixed some bugs revealed by Paul Dietz' test suite:
1013 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
1014 EXPECTED-TYPE slots filled.
1015 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
1017 ** MAKE-CONDITION accepts classes as type-designators.
1018 ** COMPILE may never return NIL.
1019 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
1020 range before calling Unix time functions
1022 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
1023 * numerous signal handling fixes to increase stability
1024 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
1025 * minor incompatible change: we now correctly canonize default
1026 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
1027 as per the MOP, rather than the historical (INITARG INITFUNCTION
1028 INITFORM). (reported by Bruno Haible)
1029 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
1030 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
1031 for more information.
1032 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
1033 pathname is a directory pathname.
1034 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
1035 * dynamic space size on PPC has been increased to 768Mb. (thanks to
1037 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
1038 :METACLASS argument in addition to a class name. (reported by
1039 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
1040 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
1041 (reported by Bruno Haible; patch from Gerd Moellmann)
1042 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
1044 * bug fix: more cleanups to the floating point exception handling on
1045 x86-64 (thanks to James Knight)
1046 * bug fix: the compiler does not try to constant fold calls of
1047 COERCE and BIT-* functions when they return freshly constructed
1048 objects. (reported by Nikodemus Siivola and Paul Dietz)
1049 * optimization: improved the MIPS versions of generic (in the
1050 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
1051 * optimization: direct conversion of (unsigned-byte 32) to floats on
1052 the PowerPC platform.
1053 * optimization: structure instances with raw slots now use less
1054 memory, and probably show better memory locality. (thanks to
1056 * optimization: DYNAMIC-EXTENT declarations for lists and closures
1057 are treated as requests for stack allocation on the x86-64,
1058 Alpha-32, PPC and SPARC platforms.
1059 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
1060 the wrong file descriptor; implementation of SOCKET-OPEN-P.
1061 (thanks to Tony Martinez)
1063 ** gcing a dead thread can no longer lead to lockups
1064 ** threads block signals until they are set up properly
1065 ** errno is no longer shared by threads
1066 ** interrupt-thread restores the eflags register on x86
1067 ** fixed some lockups due to gc/thread interaction
1068 * fixed some bugs revealed by Paul Dietz' test suite:
1069 ** invalid dotted lists no longer raise a read error when
1070 *READ-SUPPRESS* is T
1071 ** signal an error if a symbol that names a declaration is used
1072 as the name of a type, or vice versa
1073 ** allow using the (declare (typespec var*)) abbreviation for
1074 (declare (type typespec var*)) with all type specifiers
1075 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
1076 ** always return NIL from PPRINT-POP when OBJECT is NIL
1077 ** don't signal errors when pretty-printing malformed LABELS,
1078 FLET or MACROLET forms
1079 ** declarations in a DOLIST body are also in scope for the
1081 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
1083 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
1086 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
1087 * fixed cross-compiler leakages that prevented building a 32-bit
1088 target with a 64-bit host compiler.
1089 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
1090 opened with :IF-EXISTS :OVERWRITE.
1091 * fixed bug 281: error for an invalid qualifier in a short-form method
1092 combination method is not signalled until the faulty method is called.
1093 * bug fix: iteration variable type inferrer failed to deal with open
1094 intervals. (reported by Alan Shields)
1095 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
1096 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
1097 or more runtime options were provided to the sbcl binary.
1098 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
1099 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
1100 * optimization: there's now a fast-path for fixnum arguments in the
1101 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
1102 * optimization: the code generated on x86-64 is more compact thanks
1103 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
1104 * bug fix: floating-point exception handling now partly works on
1105 x86-64. (Thanks to James Knight)
1106 * improvement to the MIPS backend from Thiemo Seufer: C-style
1107 64-bit long long arguments and return values to alien functions
1109 * fixed some bugs revealed by Paul Dietz' test suite:
1110 ** the type-error signalled from WARN has a filled-in DATUM slot.
1111 ** the type-error required when a stream is not associated with
1112 a file has the stream as its datum.
1113 ** type-errors on single-floats on x86-64 no longer have
1114 :INVALID-OBJECT as the datum
1115 ** the type-errors signalled for invalid function names now have
1116 a correct expected type
1117 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
1118 for structures defined with a :TYPE. Documentation strings for
1119 typed structures are no longer immediately discarded
1120 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
1121 broadcast streams and synonym streams. FILE-LENGTH now also works
1122 on broadcast streams.
1124 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
1125 * incompatible change: the --noprogrammer option, deprecated since
1126 version 0.7.5, has been removed. Please use the equivalent
1127 --disable-debugger option instead.
1128 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
1130 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
1131 inoperational for a while now) has been completely removed.
1132 * null lexical environments are now printed as #<NULL-LEXENV>,
1133 significantly reducing the amount of clutter in typical backtraces.
1134 * documentation on weak pointers, finalization, and after GC hooks
1135 has been added to the manual.
1136 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
1137 as other specialized array types, is much faster. SUBSEQ and
1138 COPY-SEQ on such arrays have also been sped up.
1139 * optimization: EQL is now more efficient when at least other argument
1140 is known to be of type (OR FIXNUM (NOT NUMBER)).
1141 * fixed bug: the runtime is now less vulnerable to changes in the
1142 size of the SBCL object on OS X, and virtual memory is reserved for
1143 all spaces that need to be at a fixed address.
1144 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
1145 * fixed bug: finalizers and after GC hooks that cause consing are now
1147 * fixed bug: compiler error messages and summaries are now printed to
1148 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
1149 * fixed inference of the upper bound of an iteration variable.
1150 (reported by Rajat Datta).
1151 * fixed bug 211e: calling local functions with duplicated constant
1152 keyword argument no longer causes a bogus style warning about an
1154 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
1155 ftype declaration to be disregarded. (reported by Dave Roberts)
1156 * fixed bug 373: caused by erronous compilation of references to alien
1157 variables in the runtime on ppc/darwin.
1158 * fixed bug 376: CONJUGATE type deriver.
1159 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
1160 (reported by Baughn on #lisp)
1161 * a cross-compiler bug on non-x86 platforms has been identified and
1162 fixed. (thanks to Bruno Haible)
1163 * improvements to the MIPS runtime code for increased stability.
1164 (thanks to Thiemo Seufer)
1165 * increased the maximimum compact environment size to allow
1166 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
1167 * partial workaround for bug 135: don't name the function we're
1168 calling for hairy cases of EVAL, so as not to accumulate one environment
1169 entry per call to EVAL. (reported by Kevin Reid)
1170 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
1171 * optimization: type testing for non-vector arrays should be faster.
1172 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
1174 * bug fix: setting 31st element of a bit vector to zero did not work
1176 * bug fix: redefining a class definition which failed due to a
1177 previous accessor / function clash now works (but see BUGS entry
1178 #380 for more problems in this area). (thanks to Zach Beane)
1179 * the long form of DEFINE-METHOD-COMBINATION disables method group
1180 checking when given a single method group with pattern *. (thanks
1182 * on x86 compiler supports stack allocation of results of simple
1183 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
1184 * support for building and running on Mac OS X 10.4 "Tiger" has been added
1185 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
1186 * fixed some bugs related to Unicode integration:
1187 ** the restarts for recovering from input and output encoding
1188 errors only appear when there is in fact such an error to
1190 * fixed some bugs revealed by Paul Dietz' test suite:
1191 ** MISC.549 and similar: late transformation of unsafe type
1192 assertions into derived types caused unexpected code
1194 ** SCALE-FLOAT type deriver is less wrong.
1195 ** type derivers for EXP, LOG and similar functions compute result
1196 types for complex arguments better.
1197 ** (MISC.563) CONJUGATE type deriver works for very restricted
1199 ** out-of-line type testers for character strings are available.
1200 ** EQUAL compiler transform understands specialness of objects
1202 ** accessing double-floats stored on the stack now works on x86-64.
1203 ** debugger internals could sometimes create invalid lispobjs,
1204 resulting in GC crashes.
1205 ** MISC.548: type check weakening can convert required type into
1207 ** initialization forms for bindings are not in scope of free special
1210 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1211 * incompatible change: thread support for non-NPTL systems has
1212 been removed - locking is buggy and unreliable. A threaded
1213 SBCL build will now warn at startup and refuse to create
1214 new threads, unless futex support is detected in the kernel
1215 * incompatible change: the top level REPL now has only an ABORT
1216 restart associated with it, not TOPLEVEL and ABORT as it used to.
1217 TOP and TOPLEVEL are now available as debugger commands for
1218 returning to the top level.
1219 * incompatible change: forms evaluated in the REPL now use the
1220 global optimization policy.
1221 * incompatible change: user- and system-initialization files are
1222 no longer processed with LOAD, but by READ and EVAL; hence the
1223 global optimization policy, startup package, readtable, etc,
1225 * The .fasl file format number has been incremented because of
1226 various incompatible changes.
1227 * internal entry point details and argument counts no longer appear
1228 in backtraces unless explicitly requested by setting
1229 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1230 * built-in and standard functions no longer have names like "top
1231 level local call to FOO".
1232 * fixed bug 32: functions defined in non-null lexical environments
1233 now have more legible printed representation
1234 * fixed bug 33: functions defined in non-null lexical environemnts
1235 are now more amenable to inspection by INSPECT.
1236 * workaround for bug 354: XEPs no longer appear in backtraces unless
1237 explicitly requested.
1238 * fixed bug: receiving the signal which results from attempting to
1239 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1240 SIGBUS on other *BSDs) on architectures where the C stack is also
1241 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1242 to debugger confusion or wild instability. (reported by Cheuksan
1244 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1245 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1246 (reported by Lutz Euler)
1247 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1248 compiled code. (reported by Paul Dietz)
1249 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1250 specialized parameter to a method to something that is not TYPEP
1251 the specializer is now possible.
1252 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1253 face of package deletion.
1254 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1255 pathname. (reported by David Tolpin on c.l.l)
1256 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1257 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1258 STRING-STREAM and FILE-STREAM, respectively.
1259 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1260 than previously; in addition, its test suite is now run on build.
1261 (thanks to Luke Gorrie)
1262 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1263 * optimization: added a immediate representation for single-floats
1265 * fixed some bugs revealed by Paul Dietz' test suite:
1266 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1267 ** attempting to create a package with a colliding nickname causes
1268 correctable errors to be signalled.
1269 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1270 ** several x86-64 backend bugs related to sign-extension of immediate
1273 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1274 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1275 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1277 * fixed loading of multiply forward-referenced layouts.
1278 (thanks to Cheuksan Wang)
1279 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1280 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1281 (see COMPILE-FILE documentation for details of :PRINT option)
1282 * fixed bugs 19 and 317: fixed-format floating point printing is
1283 more accurate. This also fixes a bug reported by Adam Warner
1284 related to the ~@F format directive.
1285 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1287 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1288 dispatch table if the from-char is a dispatch macro character.
1289 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1290 by the wordsize no longer ignore the last word. (reported by Lutz
1292 * fixed bug in type checking of dynamic-extent variables. (reported
1294 * optimization: sequence traversal functions use their freedom to
1295 coerce function designators to functions.
1296 * optimization: code with many calls to CLOS methods specialized on
1297 CLOS classes has had redundant type checks removed.
1298 * optimization: added declarations to speed up operations that access
1299 the internal character database (for example STRING-UPCASE)
1300 * optimization: comparison operations between floats and sufficiently small
1301 fixnums no longer create extra rationals
1302 * fixed some bugs related to Unicode integration:
1303 ** portions of multibyte characters at the end of buffers for
1304 character-based file input are correctly transferred to the
1305 start of the buffer at the next read.
1306 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1307 passing it through to OPEN.
1308 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1309 argument given to internal calls to OPEN.
1310 ** the built-in comment readers (introduced by character sequences
1311 ";" and "#|") are more forgiving to encoding errors; they will
1312 STYLE-WARN and then attempt to resync the stream at a character
1313 boundary. (thanks to Teemu Kalvas)
1314 * fixed some bugs in the x86-64 port:
1315 ** Negative short int return values from c-calls are sign-extended
1317 ** The stack is aligned to 16-bytes for c-calls, as required by
1318 the ABI. (thanks to Cheuksan Wang)
1319 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1320 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1321 for enums. (thanks to Vincent Arkesteijn)
1322 ** Multiple small optimizations and bugfixes for floating point
1324 * fixed some bugs revealed by Paul Dietz' test suite:
1325 ** Space, Tab, Linefeed, Return and Page have the invalid
1326 secondary constituent character trait.
1327 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1329 ** WITH-INPUT-FROM-STRING should only update the index place on
1331 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1332 works more reliably.
1333 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1334 with one-dimensional arrays with fill pointers.
1335 ** TYPE-OF failed on a complex with an integer realpart and a
1337 ** compiler failure during type inference for the code of form
1338 (IF (EQL X (THE ...)) ...) (MISC.535).
1340 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1341 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1342 platform. The port supports 61-bit fixnums, large memory spaces
1343 and reloading shared object files.
1344 * enhancement: saving cores with foreign code loaded is now
1345 supported on ppc/Darwin in addition to the previously supported
1347 * enhancement: the statistical profiler now walks deeper into the
1348 call stack for more meaningful call-graphs and accrued time
1349 reports (x86/x86-64 only). It also now reports time spent in
1351 * enhancement: it is now possible to trace most individual methods
1352 of a generic function in addition to tracing the generic function
1354 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1356 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1357 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1358 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1359 produces an error. (thanks to Vincent Arkesteijn)
1360 * bug fix: NAMESTRING on pathnames with :WILD components in their
1361 directories works correctly. (thanks to Artem V. Andreev)
1362 * fixed bug 125: compiler preserves identity of closures. (reported
1364 * bug fixed: functions with &REST arguments sometimes failed with
1365 "Undefined function" when compiled with (DEBUG 3). (reported by
1367 * bug fix: overflow during compiling of setting element of a bit
1368 vector with constant index and value. (reported by Timmy Douglas)
1369 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1370 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1371 * on x86 compiler partially supports stack allocation of dynamic-extent
1373 * GO and RETURN-FROM do not check the extent of their exit points
1374 when compiled with SAFETY 0.
1375 * fixed some bugs related to Unicode integration:
1376 ** encoding and decoding errors are now much more robustly
1377 handled; it should now be possible to recover even from invalid
1378 input or output to the terminal. (thanks to Teemu Kalvas)
1379 ** provided a first cut at implementing STRING-TO-OCTETS and
1380 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1381 ** altered the SB-MD5 contributed module slightly, changing the
1382 interface just enough for it to be supportable for builds where
1383 lisp characters are not eight bits.
1384 * fixed some bugs revealed by Paul Dietz' test suite:
1385 ** the FORMATTER-generated functions for ~V[ conditionals require
1386 the correct number of arguments.
1387 ** READ-FROM-STRING returns the mandated second value when applied
1388 to displaced strings.
1389 ** the #\Rubout and #\Backspace characters are treated as invalid
1390 constituent characters by the tokenizer.
1392 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1393 * new feature: reloading changed shared object files with
1394 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1395 * new feature: references to foreign variables and functions
1396 can now be compiled and loaded before the corresponding shared
1397 object file is loaded, as long as the foreign definitions are
1398 available at runtime.
1399 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1400 supported. (thanks to Dan Debertin)
1401 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1402 just keywords. (thanks to Vincent Arkesteijn)
1403 * fixed bug #331: structure-class instances corresponding to
1404 DEFSTRUCT forms are now created eagerly.
1405 * fixed bug #345: backtraces from calls to undefined functions work
1406 on x86 as well. Related bug #61 is now also partially fixed on x86
1407 (backtraces from throws to unknown catch tags.)
1408 * bug fix: lambda-list parsing is now stricter vrt. order and number
1409 of lambda-list keywords.
1410 * bug fix: as specified by AMOP, an error is signalled if a
1411 class-option appears multiple times in a DEFCLASS form. (reported
1413 * bug fix: RANDOM can be compiled when the compiler derives the type
1414 of its numeric argument as a disjoint set of small integers.
1415 (reported by Paul Dietz)
1416 * bug fix: starting a core saved with shared objects loaded when
1417 those objects are not available no longer causes threaded SBCL to
1418 hang. (reported by Sean Ross)
1419 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1421 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1422 argument, which must always be NIL. (reported by Kalle Niemitalo)
1423 * bug fix: printing 1.0d+23 no longer results in an error.
1424 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1425 * bug fix: structure slot setters preserve evaluation order. (thanks
1427 * fixed some bugs related to Unicode integration:
1428 ** RUN-PROGRAM can allow its child to take input from a Lisp
1429 stream. (reported by Stefan Scholl)
1430 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1431 locales. (reported by Ken Causey)
1432 * fixed some bugs revealed by Paul Dietz' test suite:
1433 ** INCF, DECF and REMF evaluate their place form as specified in
1435 ** FORMATTER expands ~{ ~} iteration directives with V or #
1436 parameters correctly.
1437 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1438 consequent uses no arguments correctly.
1439 ** the system has a partial understanding of the (COMPLEX RATIO)
1441 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1444 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1445 * new feature: a build-time option (controlled by the :SB-UNICODE
1446 keyword feature, enabled by default) for building the system with
1447 support for the entire 21-bit character space defined by the
1449 * new feature: the system now has rudimentary external-format
1450 support; the primary user-visible change at this time is that
1451 characters with the high bit set (such as lower-case-e-acute) will
1452 print correctly to a terminal in a UTF-8 environment.
1453 * minor incompatible change: BASE-CHAR no longer names a class;
1454 however, CHARACTER continues to do so, as required by ANSI.
1455 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1456 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1457 has been moved to the SB-EXT package (temporarily re-exported from
1459 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1460 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1462 * fixed bug #351: better error-handlind and reporting for malformed
1464 * fixed bug #350: bignum-printing is now more memory-efficient,
1465 allowing printing of very large bignums, eg. (expt 2 10000000).
1466 (reported by Bruno Haible)
1467 * fixed bug #302: better primitive-type selection for intersection
1469 * fixed bug #308: non-graphic characters now all have names, as
1470 required. (reported by Bruno Haible)
1471 * bug fix: redefining a class with different superclasses now correctly
1472 removes it from the direct-subclasses of its previous superclasses.
1473 (reported by David Morse)
1474 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1475 new value now works. (reported by Bruno Haible)
1476 * bug fix: correct canonicalization of multiple non-standard slot
1477 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1478 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1479 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1480 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1481 now exists, an signals an error.
1482 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1483 during macroexpansion for non-iteration variables as well. (reported
1484 by Bruno Haible for CMUCL)
1485 * bug fix: Cyclic structures and unprintable objects in compiler
1486 messages no longer cause errors. (reported by Bruno Haible)
1487 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1488 and READ-FROM-STRING all now return a primary value of NIL if
1489 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1490 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1491 (reported by Bruno Haible for CMUCL)
1492 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1493 do not designate a condition. (reported by Bruno Haible for
1495 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1496 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1497 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1498 permitting resolution in favour of any of the conflicting symbols.
1499 (reported by Bruno Haible for CMUCL)
1500 * bug fix: EQUAL compiler optimizations is less aggressive on
1501 strings which can potentially compare true despite having distinct
1502 specialized array element types.
1503 * bug fix: unit enumerations can be defined without dividing by
1504 zero. (thanks to Vincent Arkesteijn)
1505 * FORMAT compile-time argument count checking has been enhanced.
1506 (report from Bruno Haible for CMUCL)
1507 * a partial workaround for the bug 262: the compiler does not try to
1508 inline-expand a local function doing RETURN-FROM from a deleted
1509 BLOCK. (thanks to Peter Denno for the bug report and to David
1510 Wragg for the simple test case)
1511 * fixed some bugs revealed by Paul Dietz' test suite:
1512 ** RENAME-PACKAGE allows all package designators as new package
1514 ** constraint propagation and lambda variable substitution are
1515 more cautious in dealing with partially deleted code.
1516 ** compiler sometimes lost reoptimization passes.
1517 ** CERROR, given a condition as condition designator, passes its
1518 remaining arguments to the continue format control without
1520 ** Case-altering FORMAT directives work correctly on non-ASCII
1522 ** The REAL type specifier handles bounds outside the floating
1523 point ranges without signalling FLOATING-POINT-OVERFLOW.
1524 ** Functions with IR1-transformations can create intercomponent
1525 references to global functions.
1526 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1528 ** FORMAT ~R treats a nil value for its first parameter correctly.
1530 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1531 * enhancement: saving cores with foreign code loaded is now
1532 supported on x86/NetBSD and sparc/Linux in addition to the previously
1533 supported platforms.
1534 * bug fix: on some platforms repeated installations caused multiple
1535 copies of HTML documentation to be installed -- should not happen
1536 any more. (reported by Stefan Scholl)
1537 * bug fix: parsing self-recursive alien record types multiple times
1538 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1539 original patch by Helmut Eller for CMUCL)
1540 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1541 (thanks to Richard Kreuter)
1542 * bug fix: defining classes whose accessors are methods on existing
1543 generic functions in other (locked) packages no longer signals
1544 bogus package lock violations. (reported by François-René Rideau)
1545 * bug fix: special variables as DEFMETHOD parameters no longer have
1546 associated bogus type declarations. (reported by David Wragg and
1548 * bug fix: read-write consistency on streams of element-type
1549 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1550 * bug fix: redefiniton of the only method of a generic function with
1551 no DEFGENERIC no longer emits a full WARNING. In addition,
1552 redefinition of generic functions with no DEFGENERIC to an
1553 incompatible lambda list now signals an error. (thanks to Zach
1555 * bug fix: DEFGENERIC now works even when there's a function of the
1556 same name in an enclosing lexical environment. (thanks to Zach
1558 * fixed compiler failure, caused by instrumenting code during
1559 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1560 * optimization: added loop analysis and improved register allocation
1561 * fixed some bugs revealed by Paul Dietz' test suite:
1562 ** POSITION on displaced vectors with non-zero displacement
1563 returns the right answer.
1564 ** (SIMPLE-STRING) is a valid type specifier for sequence
1566 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1568 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1569 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1571 ** The justification version of the FORMAT ~< directive treats
1572 non-zero minpad parameter correctly.
1574 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1575 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1576 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1577 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1578 the supported interface.
1579 * new feature: Single-stepping of code compiled with DEBUG 2 or
1580 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1581 * new feature: saving cores with foreign code loaded is now
1582 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1583 Timothy Moore's work for CMUCL)
1584 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1585 parameters to * instead of NIL if no initform is supplied.
1586 (reported by Johan Bockgaard)
1587 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1588 correctly when FUNCALL appears as the car of the form. Note:
1589 despite this FUNCALL forms are not currently subject to
1590 compiler-macro expansion. (port of Raymond Toy's fix for the
1591 same from CMUCL, reported by Johan Bockgaard)
1592 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1593 (thanks for Teemu Kalvas)
1594 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1595 case instead of terminating the iteration (thanks for Julian
1596 Squires, Sean Champ and Raymond Toy)
1597 * bug fix: incorrect expansion of defgeneric that caused a style
1598 warning. (thanks for Zach Beane)
1599 * bug fix: slot accessor effective method computation works properly
1600 for classes with multiple non-standard applicable methods on
1601 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1602 * on x86 compiler supports stack allocation of results of LIST and
1603 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1604 CMUCL implementation by Gerd Moellmann)
1605 * fixed some bugs revealed by Paul Dietz' test suite:
1606 ** FORMAT strings with both the ~<~:;~> form of the justification
1607 directive and pretty-printing directives cause an error.
1609 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1610 * incompatible change: the internal functions
1611 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1612 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1613 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1614 instead of the old functions.
1615 * new feature: on platforms where "dladdr" is available foreign
1616 function names now appear in backtraces. (based on Helmut Eller's
1618 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1619 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1621 * documentation: ASDF manual is now distributed with SBCL.
1622 * bug fix: SBCL can now load its contributed modules with REQUIRE
1623 even if the system-provided entries have been removed from
1624 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1626 * bug fix: backtraces involving undefined functions or assembly
1627 routines are more informative. (thanks to Brian Downing)
1628 * bug fix: mutually referent alien structures now work correctly.
1629 (reported by Rick Taube)
1630 * bug fix: structures defined by WITH-ALIEN can be referred to
1631 within other definitions in the same WITH-ALIEN.
1632 * bug fix: division operators (MOD, TRUNCATE and the like) with
1633 constant zero divisors and integer dividends no longer generate
1635 * bug fix: provide default methods for INPUT-STREAM-P and
1636 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1637 * bug fix: improve the detection and resolution of MOP metacycles
1638 (where effective method computation depends on the generic function
1639 having its effective method computed). (reported by Bruno Haible)
1640 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1641 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1642 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1643 * bug fix: pathnames with relative directory components can be
1644 represented relative to default pathnames.
1645 * optimization: in taking the GCD of bignums, reduce the two bignums
1646 to approximately the same size (using Euclid's algorithm) before
1647 applying the more sophisticated binary GCD. (thanks to Juho
1649 * optimization: COUNT on bitvectors now operates word-at-a-time.
1650 * optimization: ASH with a positive, but not necessarily constant,
1651 (leftwards) shift, when in a modular context, is compiled to a
1653 * fixed some bugs revealed by Paul Dietz' test suite:
1654 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1655 if the corresponding argument is NIL.
1656 ** FORMAT directives accepting a minpad parameter treat negative
1658 ** literal commas as character parameters to FORMAT directives are
1660 ** literal spaces directly after ~<Newline> directives within a
1661 format-logical-block (~:< ~@:>) do not induce :FILL-style
1662 conditional newlines.
1663 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1664 as specified: it no longer includes conditional newlines).
1665 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1667 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1668 :PER-LINE-PREFIX argument does not evaluate to a string.
1670 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1671 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1672 the manual for details; for now, package locks can be disabled by
1673 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1674 if no major problems are found then it is likely that they will be
1675 compiled in unconditionally.
1676 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1677 unsupported operators on all platforms. To load a shared library
1678 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1679 object file, link it into a shared library outside of SBCL and
1680 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1682 * bug workaround: ROOM T and the GC were not working together
1683 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1684 reporting facility aren't preserved. That reporting has been
1685 disabled, so now until and unless someone figures out how to make it
1686 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1687 * minor incompatible change: as threatened around sbcl-0.8.0, the
1688 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1689 The symbols are also exported from SB-PCL for backwards
1690 compatibility, but more so than before SB-PCL should be treated as
1691 an implementation-internal package.
1692 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1694 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1695 It is known as of this release not to work on the Alpha, however.
1696 * fixed bug #167: errors signalled due to illegal syntax in method
1697 bodies are now more legible.
1698 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1699 designators and can hence be used with TYPEP.
1700 * fixed bug #333: CHECK-TYPE now ensures that the type error
1701 signalled, if any, has the right object to be accessed by
1702 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1703 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1704 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1706 * fixed bug #334: programmatic addition of slots using specialized
1707 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1708 and :ALLOCATION :CLASS slots.
1709 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1710 float exponents. (rereported by Peter Seibel)
1711 * fixed a bug: #\Space (and other whitespace characters) are no
1712 longer considered to be macro characters in standard syntax by
1713 GET-MACRO-CHARACTER.
1714 * fixed bug: initialization of condition class metaobjects no longer
1715 causes an instance of the condition to be created. (reported by
1717 * fixed bug: it is now possible to have slots such that
1718 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1719 description is neither :INSTANCE nor :CLASS.
1720 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1721 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1722 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1723 non-standard SLOT-DEFINITION-ALLOCATION values.
1724 * fixed bugs: various race conditions handling exiting threads.
1725 CL-PPCRE's thread torture test now passes.
1726 * fixed arguably-a-bug: GC time proportional to number of threads in
1727 system even when most of them are idle
1728 * optimization: improved performance of BIT and SBIT on bit-vectors.
1729 * .fasl file incompatibility: The fasl file version number has
1730 been incremented because of changes associated with package locks.
1732 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1733 * minor incompatible change: the system no longer provides
1734 optimization hints (conditions which are TYPEP
1735 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1736 mode; these hints are still emitted when higher SPEED optimization
1738 * new contrib module: a sampling profiler (profiling by statistical
1739 sampling, rather than by instrumenting functions) is available as
1740 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1741 * the behaviour of the standard function ED is now customizeable by
1742 third parties through a hook variable: see ED's documentation
1743 string for information on the protocol.
1744 * the compiler no longer emits efficiency notes for (FUNCALL X)
1745 when the type of X is uncertain under default optimization
1747 * fixed bug 276: mutating a binding of a specialized parameter to a
1748 method to something that is not TYPEP the specializer is now
1750 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1751 exhibit the required behaviour on the x86 platform. (thanks to
1752 Peter van Eynde, Eric Marsden and Bruno Haible)
1753 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1754 even for difficult arguments. (reported by Peter Graves)
1755 * fixed bug 141a: the backquote printer now descends quoted
1757 * fixed another bug in backquote printing: no more destructive
1758 modification of the form's list structure. (reported by Brian
1760 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1761 move between its address being taken and the call to
1762 interrupt_thread, fixing a crashing race condition.
1763 * the SB-POSIX contrib implementation has been adjusted so that it
1764 no longer exhibits ridiculously poor performance when constructing
1765 instances corresponding to C structs.
1767 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1768 * minor incompatible change: the sb-grovel contrib now treats C
1769 structures as alien (in the sense of SB-ALIEN) objects rather than
1770 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1771 has implications for memory management of client code
1772 (sb-grovel-returned objects must now be manually managed) and for
1773 type safety (alien objects now have full types).
1774 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1775 used to control emission of compiler diagnostics, rather than the
1776 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1777 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1778 quality should be considered deprecated.
1779 * install.sh now installs the user manual as well
1780 * (not quite a new documentable feature, but worth considering in
1781 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1782 beginnings of a semantically meaningful condition hierarchy is
1783 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1785 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1786 designator as the defaults argument.
1787 * fixed bug: Displaced arrays whose displaced-to array has become
1788 too small now cause ARRAY-DIMENSION to signal an error, providing
1789 for safer bounds-checking. (reported by Bruno Haible)
1790 * fixed bug: DEFCLASS slot definitions with identical :READER and
1791 :WRITER names now signal a reasonable error. (reported by Thomas
1793 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1795 * fixed bug: Invalid slot specification errors now print correctly.
1796 (thanks to Zach Beane)
1797 * fixed bug 320: Shared to local slot value transfers in class
1798 redefinitions now happen corrently from superclasses as
1799 well. (reported by Bruno Haible)
1800 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1802 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1803 improper lists correctly. (reported by Bruno Haible)
1804 * fixed bug 313: source-transform for <fun-name> was erroneously
1805 applied to a call of a value of a variable with name <fun-name>.
1806 (reported by Antonio Menezes Leitao)
1807 * fixed bug 307: The obsolete instance protocol ensures that
1808 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1809 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1810 remove dead unknown-values globs from the middle of the stack.
1811 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1812 easier to resume long computations after using *BREAK-ON-SIGNALS*
1813 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1814 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1815 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1816 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1817 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1818 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1820 * fixed a (fairly theoretical) bug in string printing: if
1821 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1822 does not have array-element-type equal to the most general string
1824 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1825 function name. (thanks to Nikodemus Siivola)
1826 * fixed bug: compile-time format string checker failed on
1827 non-closed ~{. (reported by Thomas F Burdick)
1828 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1829 don't warn on legal loop code involving more than one aggregate
1830 boolean. (thanks to Nikodemus Siivola)
1831 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1832 in keyword position to MAKE-PACKAGE was not being reported as
1834 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1835 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1837 * fixed bugs 280 and 312: the checking for multiple definitions in a
1838 file is less likely to become confused by uses of inline
1840 * fixed bug: the #S reader macro performs the keyword coercion
1841 specified for slot names. (reported by Kalle Niemitalo)
1842 * fixed bug: lambda lists may contain symbols whose names start with
1843 & but are not lambda-list-keywords; their occurrence triggers a
1845 * fixed bug 321: define-method-combination argument lambda lists do
1846 not cause invalid code to be generated when &optional or &aux
1847 variables have default values. (reported by Bruno Haible)
1848 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1849 have CLOS classes; this appears also to have fixed reported
1850 instability in stack exhaustion detection.
1851 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1852 MUFFLE-WARNING when no associated restart is present is now
1854 * optimization: rearranged the expansion of various defining macros
1855 so that each expands into only one top-level form in a
1856 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1858 * optimization: used a previously little-used slot in symbols to
1859 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1861 * fixed some bugs revealed by Paul Dietz' test suite:
1862 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1864 ** Fixed an optimization bug related to inheritance of initforms
1865 from local to shared slots.
1866 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1867 ** CAST optimizer forgot to flush argument derived type.
1868 ** print/read consistency on floats is now orders of magnitude
1869 more likely. (thanks also to Bruno Haible for a similar report
1871 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1872 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1873 for objects of type REAL. Make it so.
1874 ** SXHASH is specified (infelicitously) to respect similarity,
1875 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1876 it so. (thanks to Markus Ziegler)
1877 ** on the Alpha, the compiler succeeds in compiling functions
1878 returning a known number of arguments greater than 63.
1879 ** fixed handling of invalid NIL arguments in keyword position
1881 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1883 ** provided a readably-printable representation for RANDOM-STATE
1885 ** ensured that pathnames, where they have a namestring, always
1886 print using #P"..." syntax.
1888 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1889 * Support for the forthcoming 2.0 version of the NetBSD kernel
1890 running on x86 hardware has been added. (thanks to Perry
1891 E. Metzger most immediately, and others for their past work)
1892 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1893 current release version; SBCL's OpenBSD support had been broken
1894 since about the time of OpenBSD's switch to ELF binary format.)
1895 * [placeholder for DX summary]
1896 ** user code with &REST lists declared dynamic-extent, under high
1897 speed or space and low safety and debug optimization policy.
1898 * The manual has been converted to Texinfo format and the debugger
1899 chapter from the cmucl manual has been added.
1900 * A facility has been added to extract documentation strings from
1901 sbcl and store them as Texinfo-formatted snippets for inclusion in
1902 the manual (via Texinfo's @include directive)
1903 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1904 the test case to Dave Roberts)
1905 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1906 pointers. (reported by Sean Ross)
1907 * bug fix: PROFILE output is printed nicely even for large numerical
1908 values. (thanks to Zach Beane)
1909 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1910 greater than 32 handle EOF correctly.
1911 * bug fix: on X86 an immediate argument of the IMUL instruction is
1912 correctly printed in disassembly. (thanks to Lutz Euler)
1913 * bug fix: class slots in redefined classes preserve their old
1914 values. (thanks to Bruno Haible and Nikodemus Siivola)
1915 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1916 succeeds. (reported by Marco Baringer)
1917 * fixed some bugs revealed by Paul Dietz' test suite:
1918 ** READ-SEQUENCE now works on ECHO-STREAMs.
1919 ** RATIONALIZE works more according to its specification. (thanks
1922 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1923 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1924 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1925 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1926 should matter to you only if you rebind the printer control
1927 variables and then find you want different bindings in the
1928 debugger than in the ordinary execution of your program.)
1929 * The runtime build system has been tweaked to support building
1930 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1931 assembler and linker. (thanks to Nikodemus Siivola)
1932 * Unbound, undefined, undeclared variables now trigger full
1933 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1934 more often programmer error than deliberate exploitation of undefined
1936 * optimization: the hash algorithm for strings has changed to one
1937 that is less vulnerable to spurious collisions. (thanks to Juho
1939 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1940 needless bounds checking. (thanks to Juho Snellman)
1941 * optimization: implemented multiplication as a modular
1942 (UNSIGNED-BYTE 32) operation on the PPC backend.
1943 * fixed some bugs revealed by Paul Dietz' test suite:
1944 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1946 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1947 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1948 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1950 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1952 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1954 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1955 their output stream on EOF from read.
1956 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1957 have been read to end-of-file.
1958 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1960 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1961 description of determination of which consecutive characters
1963 ** Printing the "Space" character with escaping on now yields "#\\ ",
1964 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1965 ** Reading floating-point numbers with *READ-BASE* set to a number
1966 less than 10 works correctly.
1967 ** Reading floating-point numbers with *READ-BASE* set to a number
1968 more than 10 works correctly.
1969 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1970 the readtable currently in effect.
1972 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1973 * minor incompatible change: parsing of namestrings on a physical
1974 (Unix) host has changed; numbers after the final #\. in a
1975 namestring are no longer interpreted as a version field. This is
1976 intented to be largely invisible to the user, except that the
1977 meaning of the namestring "*.*.*" has changed: it now refers to a
1978 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1979 should usually be replaced by
1980 (make-pathname :name :wild :type :wild :version :wild)
1981 with the added benefit that this is more likely to be portable.
1982 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1983 option to OPEN now signals an error if the file being opened
1984 exists; this may have an impact on existing code.
1985 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1986 signals received, on the PowerPC platforms (both Linux and
1987 Darwin). (thanks to Pierre Mai for pointing out the location of
1989 * several fixes on OS X: The system now builds and runs cleanly on
1990 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1991 (thanks to Brian Mastenbrook)
1992 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1993 second-resolution: integer multiples of 1/3600 between -24 and 24.
1994 (thanks to Vincent Arkesteijn)
1995 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1996 type when called with 1 argument; PEEK-CHAR checked type of
1997 PEEK-TYPE only after having read first character from a
1998 stream. (reported by Peter Graves)
1999 * bug fix: the garbage collector now has much better locality
2000 behaviour, and in particular no longer treats all memory as being
2001 exhausted when many small objects point to each other in a deeply
2003 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
2004 recognized as being TYPEP their class.
2005 * bug fix: the PUSHNEW documentation string has been corrected.
2006 (thanks to Vincent Arkesteijn)
2007 * bug fix: defaulting of the value for the last of an atypically
2008 large number of multiple values being bound was not being
2009 performed correctly on the Alpha or PPC platforms
2010 * optimization: implemented multiplication as a modular
2011 (UNSIGNED-BYTE 32) operation on the x86 backend.
2012 * optimization: SEARCH on simple-base-strings can now be open-coded.
2013 (see also contrib/compiler-extras.lisp for inspiration for
2014 teaching the compiler about the Boyer-Moore algorithm).
2015 * value, returned by MAX (and MIN) called with several EQUALP, but
2016 not EQL, arguments now does not depend on compiler settings.
2017 * fixed some bugs revealed by Paul Dietz' test suite:
2018 ** in stack analysis liveness information is propagated from
2019 non-local entry points.
2020 ** pathwise CAST removing failed when the CAST node did not start
2022 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
2023 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
2025 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
2026 host is already defined.
2027 ** RENAME-FILE works on streams instead of signalling an internal
2029 ** PEEK-CHAR uses the current readtable when determining whether
2030 or not a character is whitespace.
2031 ** MERGE-PATHNAMES handles the case when the pathname does not
2032 specify a name while the default-pathname specifies a version.
2033 ** Pathnames now stand a better chance of respecting print/read
2035 ** Attempting to use standardized file system operators with a
2036 pathname with invalid :DIRECTORY components signals a
2038 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
2040 ** DIRECTORY on logical pathnames is more correct.
2041 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
2042 signal a TYPE-ERROR if their argument is not a stream.
2043 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
2044 designator argument does not designate a stream.
2045 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
2046 examining the synonym.
2047 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
2049 ** OPEN and WITH-OPEN-STREAM allow opening streams with
2050 element-type larger than ([UN]SIGNED-BYTE 32).
2052 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
2053 * When built with the :SB-FUTEX feature, threaded builds now take
2054 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
2055 for faster/more reliable mutex and condition variable support.
2056 * Incompatible change (but one you probably shouldn't have been using
2057 anyway): the interface and code for arbitrating between multiple
2058 threads in the same user session has been redesigned.
2059 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
2060 error when called without an explicit environment argument.
2061 (thanks to Nikodemus Siivola)
2062 * bug fix: buffered :DIRECTION :IO streams are less likely to become
2063 confused about their position. (thanks to Adam Warner and Gerd
2065 * bug fix: Pretty printing backquoted forms with unquotations in the
2066 argument list position of various code constructs such as LAMBDA
2067 now works correctly. (reported by Paul Dietz)
2068 * bug fix: Pretty printing unquotations no longer loses all
2069 stream position information.
2070 * optimization: performance of string output streams is now less
2071 poor for multiple small sequence writes.
2072 * optimization: performance of CSUBTYPEP in the presence of complex
2073 expressions involving CONS and NOT many times has been improved.
2074 (reported by Paul Dietz)
2075 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
2077 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
2078 streams for the REPL, for the debugger, and so on. (thanks to
2080 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
2081 * fixed some bugs revealed by Paul Dietz' test suite:
2082 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
2083 is ignored if it is too small, rather than propagating through
2084 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
2085 ** extremely complex negations of CONS types were not being
2086 sufficiently canonicalized, leading to inconsistencies in
2088 ** VALUES tranformer lost derived type.
2090 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
2091 * fixed a bootstrapping bug: the build process no longer assumes
2092 that the various BOOLE-related constants have the same value in
2093 host and target lisps. (noted by Paul Dietz' test suite on an
2094 SBCL binary built from CLISP)
2095 * The system can now be dynamically linked on the MIPS platform,
2096 which enables dynamic loading of foreign code from Lisp. (thanks
2097 to Ralf Baechle for discussions on the MIPS ABI)
2098 * The system now records debugging information for its own source
2099 files in a filesystem-position-independent manner, relative to
2100 the "SYS" logical host.
2101 * fixed a compiler bug: MV-LET convertion did not check references
2102 to the "max args" entry point. (reported by Brian Downing)
2103 * tweaked disassembly notes to be less confident about proclaiming
2104 some instruction as an LRA. (thanks to Brian Downing)
2105 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
2106 now each have their own history, command character, and other
2107 characteristics. (thanks to David Lichteblau)
2108 * fixed some bugs revealed by Paul Dietz' test suite:
2109 ** compiler failure in compiling LOGAND expressions including a
2111 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
2112 shift greater than 32.
2113 ** FLUSH-DEST did not mark blocks for type check regeneration.
2114 ** HANDLER-CASE failed to accept declarations in handler clauses
2115 in some circumstances.
2117 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
2118 * New code in contrib/sb-introspect (still probably not entirely
2119 stable yet) provides some support for smart Lisp development
2120 environments like SLIME.
2121 * The conditions signalled for errors occurring when loading .fasl
2122 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
2123 in a way which should help ASDF recover gracefully.
2124 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
2125 stuff has been cleaned up. If you code contrib/ stuff, this might
2126 affect you, and you can look at contrib/README, contrib/STANDARDS,
2127 and/or the 0.8.4.27 diff to check.
2128 * In full calls the compiler now does not generate checks for declared
2129 argument types for all arguments.
2130 * various threading fixes
2131 ** and some experimental patches which didn't make it into
2132 the main tree for this release, but which are shipped in
2133 contrib/experimental-thread.patch as a possible fix for some
2134 failures (deadlock, spinning...) in GC-intensive multithreaded
2136 * fixed PPC build problem (source code incompatibility of different
2137 library versions): added offsetof() hackery which attempts to divine
2138 where glibc maintainers put uc_mcontext today
2139 * fixed bug 282: compiler does not trust type assertions while passing
2140 arguments to a full call.
2141 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
2142 &OPTIONAL VALUES type parameter.
2143 * fix bug 214: algorithm for noting rejected templates is now more
2144 similar to that of template seletion. (also reported by rydis on
2146 * fixed bug 141b: printing backquoted information readably and prettily
2147 inserts a space where necessary.
2148 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
2149 (CHARACTER 10) are now reported as errors, rather than propagated
2150 as unknown types. (reported by piso on #lisp)
2151 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
2152 with values NIL and :ERROR. (thanks to Milan Zamazal)
2153 * fixed bug 191c: CLOS now does proper keyword argument checking as
2154 described in CLHS 7.6.5 and 7.6.5.1.
2155 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
2156 longer raise an error; further, using a list as a for-as-arithmetic
2157 counter now raises a meaningful error.
2158 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
2159 now understood by sequence creation functions such as MAKE-SEQUENCE
2161 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
2162 a STRING-INPUT-STREAM.
2163 * compiler enhancement: SIGNUM is now better able to derive the type
2165 * type declarations inside WITH-SLOTS are checked. (reported by
2167 * fixed some bugs revealed by Paul Dietz' test suite:
2168 ** incorrect optimization of TRUNCATE for a positive first
2169 argument and negative second.
2170 ** compiler failure in let-convertion during flushing dead code.
2171 ** compiler failure while deriving type of TRUNCATE on an
2172 interval, containing 0.
2173 ** ASH of a negative bignum by a negative bignum count now returns
2175 ** intersection of CONS types now canonicalizes properly, fixing
2176 inconsistencies in SUBTYPEP.
2178 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
2179 * incompatible change: The --disable-debugger command line
2180 option now clobbers the debugger at a more fundamental
2181 level, by redefining #'INVOKE-DEBUGGER instead of by
2182 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
2183 is specified by ANSI to ignore *DEBUGGER-HOOK* and
2184 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
2185 enter the debugger REPL and then suffer recursive errors
2186 because *DEBUG-IO* is also messed up in --disable-debugger mode;
2187 while under the new system, BREAK in --disable-debugger mode
2188 terminates the system just as an unhandled error would.
2189 * fixed compiler performance when processing loops with a step >1;
2190 * bug fix: DOCUMENTATION now retrieves generic function
2191 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
2192 support has been systematized, and now supports the methods
2193 specified by ANSI, along with a default method and a method for
2194 slot documentation. (reported by Nathan Froyd)
2195 * bug fix: effective methods associated with a generic function are
2196 no longer cached over a change of that generic function's method
2197 combination. (reported by Andreas Fuchs)
2198 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
2199 names a non-existent directory. (thanks to Andreas Fuchs)
2200 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
2201 the PPC platform, lead to stack corruption; this has been fixed.
2202 (reported by Rainer Joswig)
2203 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2204 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2205 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2206 arithmetic in general, is now much more reliable on the PPC
2208 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2209 platform now returns the right answer.
2210 * optimization: restored some effective method precomputation in
2211 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2212 precomputation is now tunable.
2213 * optimization: compiler-internal data structure use has been
2214 reviewed, and changes have been made that should improve the
2215 performance of the compiler by about 20%.
2216 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2217 simple-base-strings and simple-bit-vectors is improved.
2218 * optimization: the optimization of 32-bit logical and arithmetic
2219 functions introduced in version 0.8.3 on the x86 has been
2220 implemented on the mips, ppc and sparc platforms; an
2221 implementation of the same facility, but for 64-bit arithmetic,
2222 has been added for the alpha.
2223 * microoptimization: the compiler is better able to make use of the
2224 x86 LEA instruction for multiplication by constants.
2225 * bug fix: in some situations compiler did not report usage of
2226 generic arithmetic in (SPEED 3) policy.
2227 * bug 145b fix: compiler used wrong type specifier while converting
2228 MEMBER-types to numeric.
2229 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2231 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2232 index argument now works properly on the Alpha platform.
2233 * bug fix: floating point exception treatment on the Alpha platform
2235 * bug fix: FILE-POSITION works much better on string input and
2236 output streams. (thanks to Nikodemus Siivola)
2237 * bug fix: many threading/garbage collection symptoms sorted.
2238 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2239 might be pseudo-atomic.
2240 * internal change: Stopping for GC is now done with signals not
2241 ptrace. GC is now done in whichever thread wanted it, instead of
2243 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2245 * bug fix: result form in DO is not contained in the implicit
2247 * incompatible change: ICR structure is changed; the value part of
2248 CONTINUATION is now called LVAR; corresponding functions are
2249 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2250 * added type deriver for ISQRT (thanks to Robert E. Brown).
2251 * bug fix: better support for loading from the command line when an
2252 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2254 * fixed some bugs revealed by Paul Dietz' test suite:
2255 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2256 ** ROUND and FROUND now give the right answer when given very
2257 small float arguments.
2258 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2260 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2261 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2262 ** LCM should return a non-negative integer.
2263 ** PARSE-INTEGER returned the index of a terminator instead of the
2264 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2265 ** PARSE-INTEGER returned an incorrect index being applied to a
2267 ** LCM with two arguments of 0 returns 0 rather than signalling
2269 ** unsigned addition of a 32-bit constant with the high bit set no
2270 longer causes an internal compiler error on the x86.
2271 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2272 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2273 with negative last argument.
2274 ** byte specifiers with zero size and position no longer cause
2275 an error during type derivation.
2276 ** bignum multiplication on the Alpha platform now returns the
2278 * porting: The system now builds on SuSE AMD64, although it still
2279 generates a 32-bit binary.
2280 * .fasl file incompatibility: The fasl file version number has
2281 been incremented (because of the changes to internal compiler
2282 data structures referred to above).
2284 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2285 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2286 more accurately, on the Darwin kernel running on PowerPC hardware.
2287 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2288 * Compiler code deletion notes now signal a condition of type
2289 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2290 an associated MUFFLE-WARNING restart.
2291 * The compiler now performs limited argument count validation of
2292 constant format strings in FORMAT, and where appropriate in ERROR,
2293 CERROR and WARN. (thanks to Gerd Moellmann)
2294 * New ASDF-INSTALL contrib can be used for automatic download and
2295 installation of third-party Lisp code from CCLAN or other sites
2297 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2298 which forces another thread to execute a function supplied by the
2300 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2301 now accept and act upon their :ELEMENT-TYPE keyword argument.
2302 (reported by Martin Atzmueller, Edi Weitz)
2303 * bug fix: FILE-POSITION now accepts position designators up to
2304 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2305 is the greater. (thanks to Patrik Nordebo)
2306 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2307 Kalle Olavi Niemitalo)
2308 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2309 printable. (reported by Eric Marsden)
2310 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2311 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2312 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2313 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2314 (thanks to Stig Sandoe)
2315 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2316 UNREAD-CHAR now correctly includes the unread character in the
2317 target sequence. (thanks to Gerd Moellmann)
2318 * bug fix in threaded builds: the system can now be suspended and
2319 resumed by shell job control with minimal disruption.
2320 * bug fixes in times and timezones >2038AD
2321 * better handling of "where is GNU make?" problem in build scripts
2322 (thanks to Nikodemus Siivola)
2323 * new optimization: inside a named function any reference to a
2324 function with the same name is considered to be a self-reference;
2325 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2326 optimization quality.
2327 * new optimization on x86: logical functions and + now have
2328 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2329 used when the result is truncated to 32 bits.
2330 * VALUES declaration is partially enabled.
2331 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2332 * fixed some bugs revealed by Paul Dietz' test suite:
2333 ** The system now obeys the constraint imposed by
2334 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2335 types form a lattice under type intersection.
2336 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2337 ** ASSOC now ignores NIL elements in an alist.
2338 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2339 and (1+ MOST-POSITIVE-FIXNUM) answers.
2340 ** The addition of a method with invalid qualifiers to a generic
2341 function does not cause an error to be signalled immediately;
2342 a warning is signalled, and the error is generated only on
2343 calling the generic function.
2344 * changed .fasl file version number, in part to add type codes for
2345 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2346 obscure ANSI requirements
2348 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2349 * fixed bug 148: failure to inline-expand a local function left
2350 garbage, confusing the compiler.
2351 * fixed bugs 3cd: structure slot readers perform type check if the
2352 slot can have an invalid value (i.e. it is either not initialized
2353 or can be written with a less specific slot writer).
2354 * bug fix: the compiler now traps array references to elements off
2355 the end of an array; previously, the bounds checking in some
2356 circumstances could go off-by-one.
2357 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2359 * type declarations for array element types now obey the description
2360 on the CLHS page "Declaration TYPE", as per discussions on
2361 sbcl-help around 2003-05-08. This means that a declaration
2362 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2363 declaration, all references to BAR will be asserted or assumed
2364 (with THE, so dependent on compiler policy) to involve objects of
2365 type FOO. Note that no such declaration is implied in
2366 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2367 * declared types of functions from the "Conditions"
2368 chapter. (reported by Paul Dietz)
2369 * bug fix: CERROR accepts a function as its first argument.
2370 * bug fix: NTH an NTHCDR accept a bignum as index
2371 arguments. (reported by Adam Warner)
2372 * optimization: character compare routines now optimize comparing
2373 against a constant character. (reported by Gilbert Baumann)
2374 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2375 argument now works properly on the MIPS platform.
2376 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2377 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2378 declared to have a functional type, does not cause an error
2380 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2381 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2382 * fixed bug: if last continuation of a deleted block has a
2383 destination, this destination should be deleted too. (reported by
2385 * fixed a bug in the bootstrap process: the host compiler's values
2386 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2387 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2388 test case from Patrik Nordebo)
2389 * improved the ability of the disassembler on the PPC platform to
2390 provide helpful disassembly notes.
2391 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2392 the class in more cases than previously.
2393 * bug fix: FILE-POSITION now understands :START and :END for
2394 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2395 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2396 8) data. (thanks to David Lichteblau)
2397 * bug fix: it is possible to add a method to a generic function
2398 without lambda list.
2399 * bug fix: reader failed to signal END-OF-FILE inside an
2400 object representation. (reported by Nikodemus Siivola)
2401 * fixed some bugs revealed by Paul Dietz' test suite:
2402 ** LAST and [N]BUTLAST should accept a bignum.
2403 ** condition slot accessors are methods.
2404 ** (VECTOR NIL) is a subtype of STRING.
2406 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2407 * minor incompatible change: some nonsensical specialized lambda
2408 lists (used in DEFMETHOD) which were previously ignored now signal
2410 * minor incompatible change: the system is now aware of the types of
2411 variables in the COMMON-LISP package, and will signal errors for
2412 most violations of these type constraints (where previously they
2413 were silently accepted).
2414 * minor incompatible change: COMPILE-FILE now uses the freedom
2415 afforded (ANSI 3.2.2.3) to use derived function types for
2416 functions defined in the same file. This also permits the system
2417 to warn on static type mismatches and function
2418 redefinition. (Currently it does not work with high DEBUG level.)
2419 * minor incompatible change: VALUES declaration is disabled.
2420 * When issuing notes, the compiler now signals a condition of type
2421 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2422 restart for use in user handlers. It is expected that the
2423 COMPILER-NOTE condition will eventually become a condition
2424 supertype to a hierarchy of note types, which will then be
2425 handleable in a similar fashion. However, at the moment, no such
2426 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2427 but it's an implementation detail, not a classification for the
2429 * Changes in type checking closed the following bugs:
2430 ** type checking of unused values (192b, 194d, 203);
2431 ** template selection based on unsafe type assertions (192c, 236);
2432 ** type checking in branches (194bc).
2433 * A short form of VALUES type specifier has ANSI meaning (it has
2434 increased the number of situations when SBCL cannot perform type
2436 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2437 keywords or constants is permissible.
2438 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2439 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2440 classes. (thanks to Antonio Martinez)
2441 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2442 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2443 argument to a pretty-print stream. Instead, it leaves any such
2444 operations to DESCRIBE-OBJECT methods.
2445 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2447 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2448 lambda lists. (thanks to David Lichteblau)
2449 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2450 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2451 (thanks to Gerd Moellmann)
2452 * fixed bug 246: increased compilation speed of long
2453 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2455 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2457 * DEFCONSTANT now throws a condition of type
2458 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2459 constant to a non-EQL value; CONTINUE and ABORT restarts
2460 respectively change and preserve the value.
2461 * fixed bug 63: The code walker, part of the implementation of CLOS,
2462 is now better at handling symbol macros.
2463 * bug fix: There is no longer an internal implementation type named
2464 CL:LENGTH. (reported by Raymond Toy)
2465 * bug fix: In macro-like defining macros/special operators the
2466 implicit block does not enclose the lambda list.
2467 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2468 enclosed in parentheses) are not suitable as type specifiers, and
2469 their use properly signals an error now.
2470 * bug fix: An argument count mismatch for a type specifier in code
2471 being compiled no longer causes an unhandled error at compile
2472 time, but signals a compile-time warning.
2473 * fixed simple vector readable printing
2474 * bug fix: DESCRIBE takes more care over whether the class
2475 precedence list slot of a class is bound before accessing it.
2476 (reported by Markus Krummenacker)
2477 * bug fix: FORMATTER can successfully compile pretty-printer format
2478 strings which use variants of the ~* directive inside.
2479 * bug fix: SEARCH now applies its TEST predicate to the elements of
2480 the arguments in the correct order. (thanks to Wolfhard Buss)
2481 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2482 in type inference. (thanks to Robert E. Brown)
2483 * bug fix: Reading in symbols with an explicit package name of ""
2484 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2485 * fixed some bugs revealed by Paul Dietz' test suite:
2486 ** NIL is now allowed as a structure slot name.
2487 ** Arbitrary numbers, not just REALs, are allowed in certain
2488 circumstances in LOOP for-as-arithmetic clauses.
2489 ** Multiple class redefinitions before slot access no longer
2490 causes a type error.
2491 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2492 association between the name and a class.
2493 ** Generic functions with non-standard method-combination and over
2494 five methods all of which return constants no longer return NIL
2495 after the first few invocations. (thanks to Gerd Moellmann)
2496 ** CALL-NEXT-METHOD with no arguments now passes the original
2497 values of the arguments, even in the presence of assignment.
2498 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2500 ** DISASSEMBLE works with closures and funcallable instances.
2501 ** ADD-METHOD now returns the generic function, not the new method.
2502 ** FIND-METHOD signals an error if the lengths of the specializers
2503 is incompatible with the generic function, even if the ERRORP
2505 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2506 which its argument is a member.
2507 ** DEFCLASS only redefines the class named by its class-name
2508 argument if that name is the proper name of the class;
2509 otherwise, it creates a new class.
2510 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2511 of the UNBOUND-SLOT condition to the name of the slot.
2512 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2513 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2514 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2515 SLOT-MAKUNBOUND in the specified fashion.
2517 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2518 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2519 cross-compilation host. As a consequence, we can now bootstrap our
2520 way up to SBCL starting with a bare gcc toolchain and human-readable
2521 source code (first the source to CLISP, then the source to SBCL).
2522 * A contributed module containing a partial implementation of the
2523 simple-streams interface has been included. (thanks to Rudi
2525 * A contributed module implementing the RFC1321 Message Digest
2526 Algorithm, known as MD5, has been included.
2527 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2528 no longer has any effect, as the code controlled by this feature
2529 has been deleted. (As far as we know, no-one has ever built using
2530 this feature, and its semantics were confused in any case).
2531 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2532 work on conditions (as required by the ANSI specification),
2533 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2534 expected behaviour on conditions. Users should note, however,
2535 that such behaviour is not required by the ANSI specification,
2536 and so use of this behaviour may render their code unportable.
2537 * fixed some bugs revealed by Paul Dietz' test suite:
2538 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2540 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2541 ** SXHASH on condition objects no longer returns NIL.
2542 ** :ALLOCATION :CLASS slots are better treated; their values are
2543 updated on class redefinition, and initforms inherited from
2544 superclasses are applied.
2545 ** REMOVE-METHOD returns its generic function argument even when
2546 no method was removed.
2547 ** SHARED-INITIALIZE now initializes the values of the requested
2548 slots, including those with :ALLOCATION :CLASS.
2549 ** ALLOCATE-INSTANCE now works on structure classes defined via
2550 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2552 ** SLOT-EXISTS-P now works on conditions, as well as structures
2554 ** MAKE-LOAD-FORM now has the required methods on
2555 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2556 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2557 keyword, and now implements the SLOT-NAMES argument.
2558 ** methods with &OPTIONAL arguments no longer allow too many
2559 arguments to be passed in the call without error.
2560 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2561 option is consistent with the required arguments of the generic
2562 function lambda list.
2563 * bug fix: REQUIRE accepts a string designator. (Thanks to
2565 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2566 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2567 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2568 * bug fix: The compiler now checks for duplicated variables in macro
2570 * bug fix: SETQ on globals returns the correct value.
2571 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2572 not a COMPILER-ERROR (followed by some other strange error on
2573 choosing the CONTINUE restart).
2574 * bug fix: make.sh and friends are now more consistent in the way that
2575 they look for GNU "make".
2577 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2578 * experimental native threads support (on x86 Linux >=2.4 only).
2579 This is not compiled in by default: you need to add :SB-THREAD to
2580 the target features. See the "Beyond ANSI" chapter of the manual
2582 * fix for longstanding nonANSIism: The old distinction between
2583 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2584 The return value from CL:FIND-CLASS is now a CLOS class, and
2585 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2586 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2587 * An interface to the MetaObject Protocol, as described in Kiczales,
2588 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2589 MIT Press, 1991, is available from the SB-MOP package.
2590 * incompatible change: the SB-PCL package should now be considered
2591 a private implementation detail, and no longer a semi-private MOP
2593 * minor incompatible change: due to rearrangement for threads, the
2594 control stack and binding stack are now allocated at arbitrary
2595 addresses instead of being hardcoded per-port. Users affected by
2596 this probably have to be doing advanced things with shared
2597 libraries, and will know who they are.
2598 * minor incompatible change: Previously, all --eval forms used were
2599 processed with READ before any of them were processed with EVAL.
2600 Now each --eval form is processed with both READ and EVAL before
2601 the next --eval form is processed. (Thus package operations like
2602 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2603 work as the user might reasonably expect.)
2604 * minor incompatible change: *STANDARD-INPUT* is now only an
2605 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2607 * minor incompatible change: Y-OR-N-P is now character-oriented,
2608 not line oriented. Also, YES-OR-NO-P now works without errors.
2609 (thanks to Antonio Martinez)
2610 * sb-aclrepl module improvements: an integrated inspector, added
2611 repl features, and a bug fix to :trace command.
2612 * Known functions, which cannot be open coded by the backend, are
2613 considered to be able to check types of their arguments. (fixing
2614 a bug report by Nathan J. Froyd)
2615 * fixed a bug in computing method discriminating functions: It is
2616 now possible to define methods specialized on classes which have
2617 forward-referenced superclasses. (thanks to Gerd Moellmann)
2618 * fixed evaluation order in optional entries (reported by Gilbert
2620 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2621 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2622 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2623 required-by-AMOP NAME argument, as well as CLASS and
2624 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2625 * fixed bug 20: DEFMETHOD can define methods using names that are
2626 not the proper names of classes to designate class specializers.
2627 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2628 Unix file descriptors, instead of blowing up. (thanks to Antonio
2630 * Garbage collection refactoring: user-visible change is that a
2631 call to the GC function during WITHOUT-GCING will not do garbage
2632 collection until the end of the WITHOUT-GCING. If you were doing
2633 this you were probably losing anyway.
2634 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2635 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2636 TYPEP the latter but not the former.
2637 * The compiler issues a full WARNING for calls to undefined functions
2638 with names from the CL package.
2639 * MAP-INTO for a vector destination is open coded. (reported by
2640 Brian Downing on c.l.l)
2641 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2642 documentation string.
2643 * fixed some bugs revealed by Paul Dietz' test suite:
2644 ** COPY-ALIST now signals an error if its argument is a dotted
2646 ** Condition slots are now accessed more correctly in the presence
2647 of multiple initargs for a given slot.
2648 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2649 exclude restarts of the same name associated with a different
2651 ** DEFCLASS of forward-referenced classes with another
2652 forward-referenced class in the superclasses list no longer
2654 ** Condition slots are now initialized once each, not multiple
2655 times. (thanks to Gerd Moellmann)
2656 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2658 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2659 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2660 arguments contain duplicated elements.
2661 ** RESTART-CASE understands local macros.
2662 ** RESTART-CASE associates exactly its own restarts with a condition.
2663 ** ENDP in safe mode checks its argument to be of type LIST.
2664 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2665 in question is unbound.
2666 ** Optimized MAKE-INSTANCE functions no longer cause internal
2667 assertion failures in the presence of duplicate initargs.
2668 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2669 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2670 propagated even in the ctor optimized implementation of
2672 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2674 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2675 * a better implementation of SXHASH on (simple) bit vectors,
2676 measured both in execution speed and in distribution of results
2677 over the positive fixnums, has been installed. Likewise, a better
2678 implementation of EQUAL for simple bit vectors is now available.
2679 * fixed CEILING optimization for a divisor of form 2^k.
2680 * fixed bug 240 (emitting extra style warnings "using the lexical
2681 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2682 by Antonio Martinez)
2683 * fixed SXHASH, giving different results for NIL depending on type
2684 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2685 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2686 variable. (found by Rolf Wester)
2687 * SBCL does not ignore type declarations for special
2688 variables. (reported by rif on c.l.l 2003-03-05)
2689 * some bug fixes in contrib/sb-aclrepl/
2690 * fixed some bugs revealed by Paul Dietz' test suite:
2691 ** a bug in the CONS type specifier, whereby the CAR and CDR
2692 types got intertwined, has been fixed;
2693 ** the type system is now able to reason about the interaction
2694 between INTEGER and RATIO types more completely;
2695 ** APPEND, [N]REVERSE and NRECONC check that those their
2696 arguments, which must be proper lists, are really so;
2697 ** An array specialized to be unable to hold elements has been
2698 implemented, as required -- yes, really -- by ANSI;
2699 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2700 on malformed property lists;
2702 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2703 * incompatible packaging change: in line with Unix convention,
2704 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2705 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2706 * REQUIRE and PROVIDE are now optionally capable of doing something
2707 useful. See the documentation string for REQUIRE.
2708 * infrastructure for a managed SBCL contrib system: contributed
2709 modules in this release include:
2710 ** the ASDF system definition facility;
2711 ** an interface to the BSD Sockets API;
2712 ** an ACL-like convenience interface to the repl;
2713 (thanks to Kevin Rosenberg)
2714 ** an implementation of ROTATE-BYTE, with efficient implementation
2716 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2717 gives a closer approximation to the right answer than previously.
2718 (thanks to Raymond Toy)
2719 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2720 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2721 optional environment arguments, as required by ANSI.
2722 * fixed bugs in other functions taking environment objects, allowing
2723 calls with an explicit NIL environment argument to be compiled
2725 * fixed bug 228: primary return values from
2726 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2727 COMPILE or FUNCTION.
2728 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2729 :TYPE will no longer signal errors on innocuous objects.
2730 * fixed bug 231b: SETQ is better at respecting type declarations in
2731 the lexical environment.
2732 * fixed a bug in DEFCLASS: classes named by symbols with no or
2733 unprintable packages can now be defined.
2734 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2735 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2736 * fixed compiler failure related to checking types of functions.
2737 (reported by Robert E. Brown)
2738 * the compiler is now much more consistent in its error-checking
2739 treatment of bounding index arguments to sequence functions: in
2740 (SAFETY 3) code, errors will be signalled in almost all cases if
2741 invalid sequence bounding indices are passed to functions defined
2742 by ANSI to operate on sequences.
2743 * fixed a bug in the build procedure: documentation of SBCL-specific
2744 packages is now preserved and available in the final Lisp image.
2745 * lifted FDEFINITION lookup out of loops in the implementation of
2746 many list operations. (thanks to Robert E. Brown)
2747 * fixed a bug in the reader: the #n# reader macro now works for
2748 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2749 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2750 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2751 E. Brown and Tony Martinez respectively)
2752 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2753 SLOT-BOUNDP: in particular, it is now able to optimize them much
2754 better, and is now not vulnerable to having packages renamed.
2755 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2756 always called when a slot is not present in an instance. (thanks
2758 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2759 longer signal an error on unreading a character following EOF on
2760 the previous constituent stream. (thanks to Tony Martinez)
2761 * fixed some bugs revealed by Paul Dietz' test suite:
2762 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2763 not just nonnegative fixnums;
2764 ** the logical bit-array operators such as BIT-AND now accept an
2765 explicit NIL for their "opt-arg" argument (to indicate a
2766 freshly-consed result bit-array);
2767 ** ELT now signals an error on an invalid sequence index in safe
2769 ** the type system is now cleverer about negations of numeric
2770 types, and consequently understands the BIGNUM and RATIO types
2772 ** the type system is now cleverer about the interaction between
2773 INTEGER and RATIO types: while bugs still remain, many more
2774 cases are accurately computed;
2775 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2776 if it is in the last clause;
2777 ** CONSTANTLY now correctly returns a side-effect-free function in
2779 ** DECLARE is no longer treated as a special-operator; in
2780 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2781 * incremented fasl file version number due to the change in the
2782 DEFSTRUCT-SLOT-DESCRIPTION structure.
2784 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2785 * minor incompatible change: code processed by the "interpreter" or
2786 EVAL now has a compilation optimization policy of (DEBUG 2)
2787 (changed from (DEBUG 1)) to improve debuggability of interactive
2788 development, and to allow the use of the debug RETURN command in
2790 * an experimental implementation of the RETURN command for the
2791 debugger has been included. (thanks to Frederik Kuivinen)
2792 * fixed bug 62: constraints were not propagated into a loop.
2793 * fixed bug in embedded calls of SORT (reported and investigated by
2795 * fixed some bugs revealed by Paul Dietz' test suite:
2796 ** printing and reading of arrays with some dimensions having
2797 length 0 (thanks to Gerd Moellmann);
2798 ** BOA constructor with &AUX argument without a default value does
2799 not cause a type error;
2800 ** CONSTANTP now returns true for all self-evaluating objects.
2802 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2803 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2804 accessors that are related by inheritance, as specified in the
2805 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2806 Valtteri Vuorikoski)
2807 * The compiler is now able to inline functions that were defined in
2808 a complex lexical environment (e.g. inside a MACROLET).
2809 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2811 * Support for the upcoming FreeBSD-5.0 release has been included.
2812 (thanks to Dag-Erling Smorgrav)
2813 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2814 effect when it is not in a toplevel context.
2815 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2816 stand a better chance of being correct. (thanks to Gerd
2818 * fixed bug in COERCE, which now signals an error on coercing a
2819 rational to a bounded real type which excludes the expected
2821 * The compiler is now able to derive types more accurately from the
2822 COERCE and COMPILE functions.
2823 * fixed bug 223: functional binding is considered to be constant
2824 only for symbols in the CL package.
2825 * fixed bug 231: SETQ did not check the type of a variable being set
2826 (reported by Robert E. Brown)
2827 * A new optimization for MAKE-INSTANCE has been included, fixing
2828 various bugs (including relating to :ALLOCATION :CLASS slots and
2829 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2831 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2832 ** As required by ANSI, LOOP now disallows anonymous collection
2833 clauses such as COLLECT I in conjunction with aggregate boolean
2834 clauses such as THEREIS (= I 1);
2835 ** LOOP now signals an error when any variable is reused in the
2836 same loop (including the potentially useful construct analogous
2837 to WITH A = 1 WITH A = (1+ A);
2838 ** IT is only a special loop symbol within the first clause of a
2839 conditional loop clause;
2840 ** LOOP with a typed iteration variable over a hashtable now
2841 signals a type error iff it should.
2842 * fixed some other bugs revealed by Paul Dietz' test suite:
2843 ** FILE-STREAM now names the class previously known as FD-STREAM;
2844 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2845 argument) no longer signals an error;
2846 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2847 of the slot symbol, rather than using the current package
2848 ((:CONC-NAME "") continues to intern the slot's name in the
2850 * incremented fasl file version number, because of the incompatible
2851 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2852 of the new implementation of DEFINE-COMPILER-MACRO.
2854 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2855 * Support for building SBCL for MIPS platforms running in
2856 little-endian mode has now been checked in, and basic
2857 functionality on said platforms verified.
2858 * minor incompatible change: PCL now records the pathname of a file
2859 in which methods and the like are defined, rather than its
2861 * minor incompatible change: TRUENAME now considers the truename of
2862 a file naming a directory to be the pathname with :DIRECTORY
2863 component indicating that directory.
2864 * minor incompatible change: a NAMED clause in the extended form of
2865 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2866 reason for the previous behaviour is unclear.
2867 * more systematization and improvement of CLOS and MOP conformance
2868 in PCL (thanks to Gerd Moellman and Pierre Mai):
2869 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2871 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2872 primary methods with no specializers;
2873 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2875 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2876 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2877 FORWARD-REFERENCED-CLASSes; error reporting on
2878 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2880 ** SXHASH on CLOS instances now uses a slot internal to the
2881 instance to return different numbers on distinct instances,
2882 while preserving the same return value through invocations of
2884 ** DEFMETHOD signals errors when methods with longer incongruent
2885 lambda lists are added to generic functions;
2886 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2887 CLASS, as specified in AMOP;
2888 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2889 on the order returned by the primary method for classes of
2890 class STANDARD-CLASS;
2891 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2892 * fixed some bugs shown by Paul Dietz' test suite:
2893 ** DOLIST puts its body in TAGBODY;
2894 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2896 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2897 value producing form;
2898 ** if more variables are given to PROGV than values, extra
2899 variables are bound and made to have no value;
2900 ** NSUBSTITUTE on list arguments gets the right answer with
2902 ** ELT signals an error of type TYPE-ERROR when the index argument
2903 is not a valid sequence index;
2904 ** LOOP signals (at macroexpansion time) an error of type
2905 PROGRAM-ERROR when duplicate variable names are found;
2906 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2907 ** FUNCALL of special-operators now cause an error of type
2909 ** PSETQ now works as required in the presence of side-effecting
2910 symbol-macro places;
2911 ** NCONC accepts any object as its last argument;
2912 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2914 ** loop-for-as-package does not require a package to be explicitely
2916 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2918 * fixed bug 166: compiler preserves "there is a way to go"
2919 invariant when deleting code.
2920 * fixed bug 172: macro lambda lists with required arguments after
2921 &REST arguments now cause an error to be signalled. (thanks to
2923 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2924 bug. (thanks to Matthew Danish)
2925 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2927 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2928 arguments are lexically rebound. (thanks to Gerd Moellmann and
2930 * fixed bug 194: error messages are now more informative when there
2931 is no primary method applicable in a call to a generic
2932 function. (thanks to Gerd Moellmann)
2933 * fixed bug in command line argument checking (thanks to Julian
2935 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2936 (thanks to Matthew Danish)
2937 * incremented fasl file version number, because of the
2938 SXHASH-related changes in the layout of CLOS data structures
2940 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2941 * minor incompatible change: The runtime (the Unix executable named
2942 "sbcl") is now much pickier about the .core files it will load.
2943 Essentially it now requires .core files to descend from the same
2944 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2945 as the runtime does. (The intent is to prevent the crashes which
2946 can occur, and which can even be reported as mysterious failures,
2947 when people patch the sources or change the build parameters
2948 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2949 sbcl and .core files.)
2950 * fixed bug: VALUES-LIST is no longer optimized away.
2951 * fixed bug 142: The FFI conversion of C string values to Lisp
2952 string values no longer conses excessively. (thanks to Nathan
2953 Froyd porting Raymond Toy's fix to CMU CL)
2954 * began to systematize and improve MOP conformance in PCL (thanks to
2955 Nathan Froyd, Gerd Moellman and Pierre Mai):
2956 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2958 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2959 ** FINALIZE-INHERITANCE is now called on class finalization;
2960 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2961 argument precedence order.
2962 * fixed bug 202: The compiler no longer fails on functions whose
2963 derived types contradict their declared type.
2964 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2965 so it can be non-toplevel.
2966 * The fasl file version number has changed (because of the new
2967 implementation of DEFMACRO).
2968 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2969 safe code, that any length requirement by their type-specifier
2970 argument is valid. The exceptions to this are described in bug
2972 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2973 functions now check the types of their inputs as required by ANSI.
2974 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2975 introduced symbol is DECLAREd to be SPECIAL.
2976 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2977 * fixed bug: :COUNT argument to sequence functions may be negative
2978 * fixed bug: body of DO-SYMBOLS may contain declarations
2979 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2980 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2981 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2982 symbol macro only once
2983 * fixed printing of call frame when argument list is unavailable
2984 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2985 * compiler no longer signals WARNING on unknown keyword
2988 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2989 * A beta-quality port to the mips architecture running Linux,
2990 based on the old CMUCL backend, has been made. It has been tested
2991 on a big-endian kernel, and works sufficiently well to be able to
2992 rebuild itself; it has not been tested in little-endian mode.
2993 * fixed an inconsistency between gencgc.c and purify.c which made
2994 dumping/loading .core files unreliable
2995 * fixed bug 120a: The compiler now deals correctly with IFs where
2996 the consequent is the same as the alternative, instead of
2997 misderiving the return type. (thanks to Alexey Dejneka)
2998 * fixed bug 113: Logical pathnames are now dumpable (the logical
2999 host is resolved at load-time, throwing an error if it is not
3001 * fixed bug 174: FORMAT's error message is slightly clearer when a
3002 non-printing character is used in a format directive.
3003 * fixed several bugs in compiler checking of type declarations, i.e.
3004 violations of the Python "declarations are assertions" principle
3005 (thanks to Alexey Dejneka)
3006 * fixed several bugs in PCL's error checking (thanks to Gerd
3008 * fixed bug: printing of FILE-ERROR (thanks to Antonio
3010 * fixed bug in compilation of functions as first class values
3011 (thanks to Antonio Martinez-Shotton)
3012 * The compiler's handling TYPE-ERRORs which it can prove will
3013 inevitably happen at runtime has been cleaned up and corrected
3014 in several ways. (thanks to Alexey Dejneka)
3015 * improved argument type checking for various basic arithmetic
3016 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
3017 lavished on them in the past that they can be compiled in many
3018 ways in different special cases
3019 * fixed bug 181: compiler checks validity of user supplied type
3021 * cleaned up code flushing in optimization: Function calls which
3022 should signal errors for safety purposes (e.g. which ANSI says
3023 should signal errors when their arguments are of incorrect type)
3024 are no longer optimized away.
3025 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
3026 * incremented fasl file version number, because changes in the
3027 implementation of sequence functions like COERCE caused
3028 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
3029 in old inline expansions) to become undefined. (Actually these
3030 changes were later undone, so we might very well be binary
3031 compatible with 0.7.7 after all, but leaving the version number
3032 incremented seemed like the simplest and most conservative
3035 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
3036 * An alpha-quality port to the parisc architecture running Linux,
3037 based on the old CMUCL backend, has been made. This, even more so
3038 than the other backends, should be considered still a work in
3039 progress; known problems include that the Linux kernel in 64-bit
3040 mode does not propagate the correct sigcontext structure to
3041 userspace, and consequently SBCL on a parisc64 kernel will not
3043 * fixed bug 189: The compiler now respects NOTINLINE declarations for
3044 functions declared in FLET and LABELS. (I.e. "LET conversion" is
3045 suppressed.) Also now that the compiler is looking at declarations
3046 in the environment, it checks optimization declarations as well,
3047 and suppresses inlining when (> DEBUG SPEED).
3048 * More fixes have been made to treatment of floating point exception
3049 treatment and other Unix signals. In particular, floating point
3050 exceptions no longer cause Bus errors on the SPARC/Linux platform.
3051 * The detection and handling of control stack exhaustion (infinite
3052 or very deeply nested recursion) has changed. Stack exhaustion
3053 detection is now done by write-protecting pages at the OS level
3054 and applies at all optimization settings; when found, a
3055 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
3056 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
3057 be caught using IGNORE-ERRORS.
3058 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
3059 correctly when transforming recursive LABELS functions to LETs.
3060 (thanks to Alexey Dejneka)
3061 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
3062 that are names of constants or global variables.
3063 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
3064 alien routines with docstrings.
3065 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
3066 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
3068 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
3069 (thanks to Eric Marsden)
3070 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
3071 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
3072 * Bug fix: The SPARC backend can now compile functions involving
3073 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
3074 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
3075 to a functions expecting a PATHNAME-DESIGNATOR.
3076 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
3077 lambda lists. (thanks to Alexey Dejneka)
3078 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
3079 functions so that EXPORTing the name of the class doesn't cause
3080 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
3081 to Antonio Martinez for reporting this)
3082 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
3083 constant-folded without failing an assertion. (thanks to Einar
3084 Floystad Dorum for reporting this)
3085 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
3086 types are now dealt with more correctly by the compiler.
3087 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
3088 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
3089 behaviour analogous to RENAME-FILE. This puts its behaviour more
3090 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
3092 * The fasl file version number has changed again. (because of the
3093 bug fix involving the names of PCL MAKE-INSTANCE functions)
3095 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
3096 * bug fix: Floating point exceptions are treated much more
3097 consistently on the x86/Linux and PPC/Linux platforms.
3098 * Array initialization with :INITIAL-ELEMENT is now much faster for
3099 cases when the compiler cannot open code the array creation, but
3100 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
3101 array accesses have also seen a speed increase.
3102 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
3103 specified. (This was at the root of some bad interactions between
3104 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
3106 * bug fix: Internal error arguments for undefined functions are now
3107 computed correctly on the PPC/Linux platform.
3108 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
3109 Raymond Toy's patch for CMU CL)
3110 * Support for the Solaris 9 operating environment has been included
3111 (thanks to Daniel Merritt)
3112 * A very ugly but hopefully complete draft of the missing FFI chapter
3113 of the manual has been created by reformatting the corresponding
3114 CMU CL manual chapter into (currently very ugly and incoherent)
3115 DocBook and bringing it up to date for SBCL behavior. Thus, the
3116 manual is now essentially complete, at least by my extreme
3117 once-and-only-once standards, whereby it's acceptable to refer to
3118 the doc strings of SB-EXT functions as the primary documentation.
3119 * The fasl file version number has changed again, due to cleanup of
3120 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
3121 is no longer a static symbol.)
3123 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
3124 * SBCL now builds with OpenMCL (version 0.12) as the
3125 cross-compilation host; also, more progress has been made toward
3126 bootstrapping under CLISP.
3127 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
3129 * bug 158 fixed: The compiler can now deal with integer loop
3130 increments different from 1; fixing this turned out also to fix
3132 * bug 169 fixed: no more bogus warnings about using lexical bindings
3133 despite the presence of perfectly good SPECIAL declarations (thanks
3134 to David Lichteblau)
3135 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
3136 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
3137 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
3139 * bug 180 fixed: Method combination specifications no longer ignore
3140 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
3141 * bug fix: Structure type predicate functions now check their argument
3142 count as they should.
3143 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
3144 correctly. (thanks to Pierre Mai)
3145 * minor incompatible change: The --noprogrammer option is deprecated
3146 in favor of the new --disable-debugger option, which is very similar.
3147 (The major difference is that it takes effect at a slightly different
3148 time at startup, causing handling of errors in --sysinit and
3149 --userinit files will be affected differently.) The
3150 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
3151 been added to allow this functionality to be controlled from ordinary
3152 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
3153 maintainers, who might want to run non-interactive scripts to
3154 build SBCL cores which will later be used interactively.)
3155 * minor incompatible change: The LOAD function no longer, when given
3156 a wild pathname to load, loads all files matching that pathname.
3157 Instead, an error of type FILE-ERROR is signalled.
3159 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
3160 * bug 147 fixed: The compiler preserves its block link/count
3161 invariants more correctly now so that it doesn't crash. (thanks
3163 * Dynamic loading of object files in OpenBSD is now supported. (thanks
3165 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
3166 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
3167 no-value-for-this-character as NIL (as specified by ANSI).
3168 * HOST-NAMESTRING on physical pathnames now returns a string that is
3169 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
3170 (thanks to Christophe Rhodes)
3171 * The Alpha port handles icache flushing more correctly. (thanks to
3173 * More progress has been made toward bootstrapping under CLISP. (thanks
3174 to Christophe Rhodes)
3175 * The fasl file format has changed again, because dynamic loading
3176 on OpenBSD (which has non-ELF object files) motivated some cleanups
3177 in the way that foreign symbols are transformed and passed around.
3178 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
3179 is no longer treated as whitespace by the reader, but instead as
3180 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
3181 |A
\7fB|, instead of A as it used to.
3183 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
3184 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
3185 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
3186 * SBCL now runs on the PPC archtiecture under Linux. It actually did
3187 this as of 0.7.1.45, but was left out of the previous news section
3188 (thanks to Dan Barlow)
3189 * SBCL now runs on the Solaris operating system on SPARC architectures
3190 (thanks to Christophe Rhodes's port of the CMUCL runtime)
3191 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
3192 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
3193 * SPARC backend cleanups, allowing builds of cores optimized for V8
3194 and V9 SPARCS, and also emission of code targeted to a particular
3195 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
3197 * SBCL is closer to bootstrapping under CLISP, thanks to various
3198 fixes by Christophe Rhodes.
3199 * The fasl file format has changed again, to allow the compiler's
3200 INFO database to support symbol macros.
3201 * The user manual (in doc/) is formatted into HTML more nicely.
3202 (thanks to coreythomas)
3203 * The system is smarter about SUBTYPEP relationships, especially
3204 those involving NOT types (including types such as ATOM which are
3205 represented internally using NOT types). Thus SUBTYPEP is less
3206 likely to return (VALUES NIL NIL) in general, and in particular
3207 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3209 * The fasl file format has changed again, because the internal
3210 representation of types now includes a new slot to support the new
3211 SUBTYPEP-of-NOT-types logic.
3212 * (not a change in the main branch of SBCL, but a related prototype
3213 which can hopefully be merged into the main branch of SBCL in the
3214 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3215 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3216 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3217 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3218 dispatch macro character combinations. (thanks to Alexey Dejneka)
3219 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3220 that superficially look like logical namestrings correctly.
3221 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3223 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3224 default supplied-p) for &optional and &key arguments. (thanks to
3227 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3228 * incompatible change: The compiler is now less aggressive about
3229 tail call optimization, doing it only when (> SPACE DEBUG) or
3230 (> SPEED DEBUG). (This is an incompatible change because there are
3231 programs which relied on the old CMU-CL-style behavior to optimize
3232 away their unbounded recursion which will now die of stack overflow.)
3233 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3234 for non-GENCGC systems has been increased to 20M (since that
3235 seems much closer to the likely performance optimum for modern
3236 systems than the old 4M value was)
3237 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3238 and *DEBUG-PRINT-LEVEL*
3239 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3240 of CMU CL's support for SPARC, and various endianness and other
3241 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3242 * new syntactic sugar for the Unix command line: --load foo.bar is now
3243 an alternate notation for --eval '(load "foo.bar")'.
3245 ** The system now detects stack overflow and handles it gracefully,
3246 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3247 optimization settings. (This is a good thing in general, and
3248 its introduction in this version should be particularly timely
3249 for anyone whose code fails because of suppression of tail
3251 ** The system now hunts for the C variable "environ" in a more
3252 devious way, to avoid segfaults when the C library version differs
3253 between compile time and run time. (thanks to Christophe Rhodes)
3254 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3255 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3256 ** The compiler no longer issues bogus style warnings for undefined
3257 classes in the same source file as the DEFCLASSes which defined
3258 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3260 ** fixes in CONDITION class precedence list for undefined function
3261 errors (thanks to Alexei Dejneka)
3262 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3263 correctly. (thanks to Dan Barlow)
3264 ** portability fixes aiming at bootstrapping under CLISP (thanks
3265 to Dave McDonald and Christophe Rhodes)
3266 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3267 ** fixes in type translation and and type inference (thanks to
3269 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3270 ** various fixes in the new ports (thanks to Dan Barlow)
3271 * several changes related to debugging:
3272 ** suppression of tail recursion, as noted above
3273 ** stack overflow detection, as noted above
3274 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3275 is now the default. (For some time encapsulation has been more
3276 reliable than the breakpoint-based :ENCAPSULATE NIL
3277 implementation, at least on X86 systems; and I just noticed that
3278 encapsulation also seems closer to the spirit of the ANSI
3281 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3283 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3284 up properly again. (There was a packaging bug in 0.7.0 which
3285 left their definitions in SB-SYS::LOAD-FOREIGN and
3286 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3287 vital for most things which interface to C-level interfaces,
3288 like extensions working with sockets or databases or
3289 Perl-compatible regexes or whatever, and the need to fix
3290 this bug is the main reason that 0.7.1 was released so
3292 ** DEFGENERIC is now choosier about the methods it redefines, so that
3293 reLOADing a previously-LOADed file containing DEFGENERICs does
3294 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3295 cycle now works as it should. (thanks to Alexey Dejneka)
3296 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3297 fixed by Christophe Rhodes. (He actually submitted this patch
3298 months ago, and I delayed until after 0.7.0.)
3299 ** Bug 111 (internal compiler confusion about runtime checks on
3300 FUNCTION types) was fixed by Alexey Dejneka.
3301 * Some internal cleanups (getting rid of variables which aren't
3302 needed now that the byte interpreter is gone) caused the fasl
3303 file format number to change again.
3305 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3306 * major incompatible change: The default fasl file extension, i.e. the
3307 default extension for files produced by COMPILE-FILE, has changed
3308 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3310 ** There are many changes in the implementation of the compiler.
3311 SBCL is now essentially a compiler-only implementation of ANSI
3312 Common Lisp. EVAL still "interprets" a few special cases, but
3313 almost all the interesting cases are handled by creating
3314 a LAMBDA expression, calling COMPILE on it, then calling
3315 FUNCALL on the result.
3316 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3317 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3318 Since the code is newer, there might still be some new bugs
3319 (though not as many as before Martin Atzmueller's fixes:-). But
3320 the new code is substantially simpler and clearer, and hopefully
3321 any remaining bugs will be simpler, less fundamental, and more
3322 fixable then the bugs in the old code.
3323 ** The revised compiler is still a little unsteady on its feet.
3325 *** The debugging information it produces (particularly the names
3326 of FUNCTION objects) is sometimes much less useful than what
3327 the old compiler produced.
3328 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3329 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3330 within a MACROLET) has been temporarily weakened.
3331 ** There are new compiler optimizations for various functions:
3332 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3333 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3334 *** the math functions TRUNCATE, FLOOR, and CEILING
3335 *** the function-of-all-trades COERCE
3336 Mostly these should be transparent, but there's one
3337 potentially-annoying problem (bug 117): when the compiler
3338 inline-expands a function and does type analysis on the result,
3339 it can create control paths which have type mismatches, and
3340 when it can't prove that those control paths aren't taken,
3341 it will issue WARNINGs about the type mismatches. This is
3342 a particular problem in practice for the new sequence functions.
3343 It's not clear how this should be fixed, and for now, a
3344 workaround is given in the entry for 117 in the BUGS file.
3345 ** (Because of the interaction between the two previous items --
3346 occasional inlining problems and new inline expansions -- some
3347 of the new sequence function optimizations won't really kick in
3348 completely until debugging information, and then inlining, are
3349 straightened out in some future version.)
3350 * minor incompatible changes:
3351 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3352 DIRECTORY no longer implicitly promotes NIL slots of its
3353 pathname argument to :WILD. In particular, when you ask for the
3354 contents of a directory (which you used to be able to do without
3355 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3356 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3357 ** changes in behavior that ANSI explicitly defines to be
3358 implementation dependent:
3359 *** The new compiler-only implementation still conforms with ANSI,
3360 but acts a little different than before. Besides the obvious
3361 changes in performance tradeoffs (that the cost per form passed
3362 to EVAL has gone up, and the cost per form executed by EVAL
3363 has gone down), the behavior of the system changes a little
3364 because there are no longer any interpreted function objects.
3365 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3366 e.g. doing COMPILE on the output of interactive DEFUN is
3368 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3370 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3371 has changed from (:CL) to NIL.
3372 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3373 e.g. #\Newline and #\Tab, don't have names specified in the
3374 ANSI Common Lisp standard, is now based on their ASCII symbolic
3375 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3376 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3377 are no longer used for output.
3378 ** changes in internal implementation constants:
3379 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3380 4 million. (If your application spends a lot of time GCing and
3381 you have a lot of RAM, you might want to experiment with
3382 increasing it even more.)
3383 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3384 However, almost all old code should still continue to work without
3385 immediate update, as SB-C-CALL is now a (deprecated) nickname
3387 ** Old operator names in the style DEF-FOO are now deprecated in
3388 favor of new corresponding names DEFINE-FOO, for consistency with
3389 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3390 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3391 internal symbols, but a few supported extensions like
3392 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3393 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3394 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3395 etc. as you get deeper into recursive calls to the debugger
3396 command loop, instead of the old "5]", "5]]", "5]]]"
3397 sequence. (I was motivated to do this when squabbles between
3398 ILISP and SBCL left me very deeply nested in the debugger. In the
3399 short term, this change will probably provoke more ILISP/SBCL
3400 squabbles, but hopefully it will be an improvement in the long run.)
3401 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3402 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3403 function, since declaiming return types involving aliens is
3404 (1) annoyingly messy to do by hand and (2) vital to efficient
3405 compilation of code which calls such functions.
3406 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3407 longer reexported by the SB-EXT package. They're solely useful
3408 for alien code, so it seems more logical that you should get
3409 them from the SB-ALIEN package, not in SB-EXT.
3410 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3411 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3412 features. Instead, the code that they used to control is always
3413 built into the system.
3414 * many other bug fixes
3415 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3416 advantage of the new EVAL-WHEN stuff and to clean them up in
3417 general, and they are now more ANSI-compliant in a number of
3418 ways. Martin Atzmueller is responsible for a lot of this.
3419 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3421 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3422 *** correct ERROR type for various file operations
3423 *** some fixes for Lisp streams
3424 *** DEFMETHOD syntax checking
3425 *** changing old weird representation of debug information as
3426 strings (which, among their other deficiencies, don't transform
3427 correctly when you rename packages, and don't change their
3428 print representation when you change things like *PACKAGE*
3429 and *PRINT-LENGTH*) to symbols and lists of symbols
3430 He also made several improvements and fixed several bugs in DESCRIBE.
3431 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3433 *** misbehavior of WRITE-STRING/WRITE-LINE
3434 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3435 and several other LOOP problems as well
3436 *** DIRECTORY when similar filenames are present
3437 *** DEFGENERIC with :METHOD options
3438 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3439 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3440 *** argument ordering in FIND with :TEST option
3441 *** mishandled package designator argument in APROPOS-LIST
3442 *** various problems in the backquote readmacro
3443 *** a bug in APROPOS
3444 *** probably some others that I'm not describing very well here,
3445 since the CVS log documents them by reference to sbcl-devel
3446 messages, and the SourceForge archives aren't working well.:-(
3447 ** Dan Barlow improved the Alpha port (and is making progress on the
3448 PPC port, for those of you who think different).
3449 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3450 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3451 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3452 continues to work on the SPARC port (for those of you in a position
3453 to look down upon our little PC-compatible boxes from a great height).
3454 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3455 and uses that copy, rather than the current dynamic value, when
3456 it's trying to decide whether to truncate output. Thus e.g.
3457 (let ((*print-lines* 50))
3458 (pprint-logical-block (stream nil)
3460 (let ((*print-lines* 8))
3461 (print (aref possiblybigthings i) stream)))))
3462 should now truncate the logical block only at 50 lines, instead of
3463 often truncating it at 8 lines, as it did before.
3464 * The doc/cmucl/ directory, containing old CMU CL documentation
3465 from the time of the fork, is no longer part of the base system.
3466 SourceForge has shut down its anonymous FTP service, and with it
3467 my original plan for distributing the old CMU CL documentation
3468 there. For now, if you need these files you can download an old
3469 SBCL source release and extract them from it.
3470 * The fasl file version number changed again, for dozens of reasons,
3471 some of which are apparent above.
3473 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3474 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3475 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3476 patch, so that DISASSEMBLE output is much nicer.
3477 * The code in the SB-PROFILE package now seems reasonably stable.
3478 I still haven't decided what the final interface should look like
3479 (I'd like PROFILE to interact cleanly with TRACE, since both
3480 facilities use function encapsulation) but if you have a need
3481 for profiling now, you can probably use it successfully with
3482 the current CMU-CL-style interface.
3483 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3484 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3485 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3486 link now returns the dangling link itself, and for similar
3487 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3488 link itself. (In these cases the old code signalled an error and
3489 looped endlessly, respectively.) Thus, DIRECTORY now works even
3490 in the presence of dangling and cyclic symbolic links.
3491 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3492 is now a supported extension again, since the consensus on
3493 sbcl-devel was that it can be useful for ordinary development
3494 work, not just for debugging SBCL itself.
3495 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3496 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3497 that currently-defined functions might be redefined later with
3498 different return types.
3499 * Hash tables can be printed readably, as inspired by CMU CL code
3500 of Eric Marsden and SBCL code of Martin Atzmueller.
3501 * better error handling in CLOS method combination, thanks to
3502 Martin Atzmueller porting Pierre Mai's CMU CL patches
3503 * more overflow fixes for >16Mbyte I/O buffers
3504 * A bug in READ has been fixed, so that now a single Ctrl-D
3505 character suffices to cause end-of-file on character streams.
3506 In particular, now you only need one Ctrl-D at the command
3507 line (not two) to exit SBCL.
3508 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3510 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3511 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3512 does the right thing.
3513 * The implementation of some type tests, especially for CONDITION
3514 types, is now tidier and maybe faster, due to CMU CL code
3515 originally by Douglas Crosher, ported by Martin Atzmueller.
3516 * Some math functions have been fixed, and there are new
3517 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3518 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3519 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3520 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3521 likely to be built into sbcl-0.7.0.)
3522 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3523 CL, ported to SBCL by Martin Atzmueller)
3524 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3525 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3526 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3527 * There's a new slam.sh hack to shorten the edit/compile/debug
3528 cycle for low-level changes to SBCL itself, and a new
3529 :SB-AFTER-XC-CORE target feature to control the generation of
3530 the after-xc.core file needed by slam.sh.
3531 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3532 COMPILE-FILE is no longer supported, so that now every function
3533 gets an entry point, so that block compilation looks a little
3534 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3535 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3536 returns the number of bytes consed since the system started,
3537 rather than the number consed since the first time the function
3538 was called. (The new definition parallels ANSI functions like
3539 CL:GET-INTERNAL-RUN-TIME.)
3540 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3541 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3542 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3543 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3544 * Fasl file version numbers are now independent of the target CPU,
3545 since historically most system changes which required version
3546 number changes have affected all CPUs equally. Similarly,
3547 the byte fasl file version is now equal to the ordinary
3550 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3551 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3552 is no longer recognized. I apologize for this, because it was
3553 listed in SB-EXT as a supported extension, but I found that
3554 its existing behavior was poorly specified, as well as incorrectly
3555 specified, and it looked like too much of a mess to straighten it
3556 out. I have enough on my hands trying to get ANSI stuff to work..
3557 * many patches ported from CMU CL by Martin Atzmueller, with
3558 half a dozen bug fixes in pretty-printing and the debugger, and
3559 half a dozen others elsewhere
3560 * fixed bug 13: Floating point infinities are now supported again.
3561 They might still be a little bit flaky, but thanks to bug reports
3562 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3563 as flaky as they were.
3564 * The --noprogrammer command line option is now supported. (Its
3565 behavior is slightly different in detail from what the old man
3566 page claimed it would do, but it's still appropriate under the
3567 same circumstances that the man page talks about.)
3568 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3569 are now supported, and enabled by default. Thus, the compiler can
3570 handle many floating point and complex operations much less
3571 inefficiently. (Thus e.g. you can implement a complex FFT
3573 * The compiler now detects type mismatches between DECLAIM FTYPE
3574 and DEFUN better, and implements CHECK-TYPE more correctly, and
3575 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3576 thanks to patches from Martin Atzmueller.
3577 * various fixes to make the cross-compiler more portable to
3578 ANSI-conforming-but-different cross-compilation hosts (notably
3579 Lispworks for Windows, following bug reports from Arthur Lemmens)
3580 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3581 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3582 fixed thanks to Pierre Mai's CMU CL patches.
3583 * fixes to keep the system from overflowing internal counters when
3584 it tries to use i/o buffers larger than 16M bytes
3585 * fixed bug 45a: Various internal functions required to support
3586 complex special functions have been merged from CMU CL sources.
3587 (When I was first setting up SBCL, I misunderstood a compile-time
3588 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3589 * improved support for type intersection and union, fixing bug 12
3590 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3591 more obscure bugs as well
3592 * some steps toward byte-compiling non-performance-critical
3593 parts of the system, courtesy of patches from Martin Atzmueller
3594 * Christophe Rhodes has made some debian packages of sbcl at
3595 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3596 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3597 stable, but are nonetheless usable. When he's ready, I'd be happy
3598 to add them to the SourceForge "File Releases" section. (And if
3599 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3600 * new fasl file format version number (because of changes in
3601 internal representation of (OR ..) types to accommodate the new
3602 support for (AND ..) types, among other things)
3604 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3605 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3607 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3609 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3610 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3611 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3612 * DESCRIBE now works on structure objects again.
3613 * Most function call argument type mismatches are now handled as
3614 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3615 know whether the function will be redefined before the call is
3616 executed. (The compiler could flag local calls with full WARNINGs,
3617 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3618 it doesn't keep track of enough information to know whether calls
3619 are local in this sense.)
3620 * Compiler output is now more verbose, with messages truncated
3621 later than before. (There should be some supported way for users
3622 to override the default verbosity, but I haven't decided how to
3623 provide it yet, so this behavior is still controlled by the internal
3624 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3625 src/compiler/ir1util.lisp.)
3626 * Fasl file format version numbers have increased again, because
3627 support for the Gray streams extension changes the layout of the
3628 system's STREAM objects.
3629 * The Gray subclassable streams extension now works, thanks to a
3630 patch from Martin Atzmueller.
3631 * The full LOAD-FOREIGN extension (not just the primitive
3632 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3633 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3634 but like most other programs, it defaults to copying the Unix
3635 environment from the original process instead of starting the
3636 new process in an empty environment.
3637 * Extensions which manipulate the Unix environment now support
3638 an :ENVIRONMENT keyword option which doesn't smash case or
3639 do other bad things. The CMU-CL-style :ENV option is retained
3640 for porting convenience.
3641 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3642 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3644 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3646 * A patch from Martin Atzmueller seems to have solved the SIGINT
3647 problem, and as far as we know, signal-handling now works cleanly.
3648 (If you find any new bugs, please report them!)
3649 * The system no longer defaults Lisp source file names to types
3650 ".l", ".cl", or ".lsp", but only to ".lisp".
3651 * The compiler no longer uses special default file extensions for
3652 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3653 seems to expect a single default extension for all compiled code,
3654 and there's no compelling reason to try to stretch the standard
3655 to allow two different extensions.) Instead, byte-compiled files
3656 default to the same extension as native-compiled files.
3657 * Fasl file format version numbers have increased again, because
3658 a rearrangement of internal implementation packages made some
3659 dumped symbols in old fasl files unreadable in new cores.
3660 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3661 many fewer weird special cases.
3662 * Bug #17 (differing COMPILE-FILE behavior between logical and
3663 physical pathnames) has been fixed, and some related misbehavior too,
3664 thanks to a patch from Martin Atzmueller.
3665 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3666 by Tim Moore, ported to SBCL by Martin Atzmueller.
3667 * Martin Atzmueller fixed several filesystem-related problems,
3668 including bug #36, in part by porting CMU CL patches, which were
3669 written in part by Paul Werkowski.
3670 * More compiler warnings in src/runtime/ are gone, thanks to
3671 more patches from Martin Atzmueller.
3672 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3675 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3677 * DESCRIBE now works on CONDITION objects.
3678 * The debugger now handles errors which arise when trying to print
3679 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3681 * The build system now uses an additional file, customize-target-features.lisp,
3682 to allow local modifications to the target *FEATURES* list. (The point of
3683 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3684 debugging features enabled, without having to worry about propagating it
3685 into everyone's system when I do a "cvs update".) When no
3686 customize-target-features.lisp file exists, the target *FEATURES* list
3687 should be constructed the same way as before.
3688 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3689 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3690 warn about behavior which is undefined under the ANSI spec. Note: This
3691 is specified by ANSI, but it's not very popular with programmers.
3692 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3693 macro in the SBCL sources for an example of a workaround which you
3694 might use to make portable ANSI-standard code which does what you want.
3695 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3696 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3697 when it's used as a non-toplevel form. (This is required in order
3698 to implement the DEFCONSTANT-EQX macro.)
3699 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3700 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3701 funny things, due to bugs in the implementation of EVAL-WHEN
3702 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3703 non-toplevel DEFCONSTANTs are uncommon.)
3704 * The core file version number and fasl file version number have been
3705 incremented, because the old noncompliant DEFCONSTANT behavior involved
3706 calling functions which no longer exist, and because I also took the
3707 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3708 * fixed bug 1 (error handling before read-eval-print loop starts), and
3709 redid debugger restarts and related debugger commands somewhat while
3711 ** The QUIT debugger command is gone, since it did something
3712 rather different than the SB-EXT:QUIT command, and since it never
3713 worked properly outside the main toplevel read/eval/print loop.
3714 Invoking the new TOPLEVEL restart provides the same functionality.
3715 ** The GO debugger command is also gone, since you can just invoke
3716 the CONTINUE restart directly instead.
3717 ** The TOP debugger command is also gone, since it's redundant with the
3718 FRAME 0 command, and since it interfered with abbreviations for the
3720 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3722 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3723 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3724 some porting work by Martin Atzmueller)
3725 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3726 with a boatload of patches which he ported to SBCL. Now that those
3728 ** The system tries to make sure that its low-priority messages
3729 are prefixed by semicolons, to help people who like to use
3730 syntax highlighting in their ILISP buffer. (This patch
3731 was originally due to Raymond Toy.)
3732 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3733 patches originally written by Raymond Toy.
3734 ** The compiler understands coercion between single-value and
3735 multiple-VALUES type expressions better, getting rid of some very
3736 weird behavior, thanks to patches originally by Robert MacLachlan
3737 and Douglas Crosher.
3738 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3739 lambda lists, thanks to a patch originally by Pierre Mai.
3740 ** The system no longer bogusly warns about "abbreviated type
3742 ** The compiler gets less confused by inlining and RETURN-FROM,
3743 thanks to some patches originally by Tim Moore.
3744 ** The system no longer hangs when dumping circular lists to fasl
3745 files, thanks to a patch originally from Douglas Crosher.
3746 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3747 undefined function error.
3748 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3749 in structure slot initforms) for now, documented workaround instead:-|
3750 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3751 * fixed bug 5: added stubs for various Gray stream functions called
3752 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3753 installed, at least appropriate type errors are generated
3754 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3755 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3756 consistently in DEFMETHOD forms.
3757 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3758 it doesn't seem to affect SBCL after all
3759 * The C runtime system now builds with better optimization and many
3760 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3762 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3764 * The system is now under CVS at SourceForge (instead of the
3765 CVS repository on my home machine).
3766 * The new signal handling code has been tweaked to treat register
3767 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3768 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3769 downstream, e.g. in debug-int.lisp, has implicit dependencies
3770 on the unsignedness of integer representation of machine words,
3771 and that caused the system to bomb out with infinite regress
3772 when trying to recover from type errors involving signed values,
3773 e.g. (BUTLAST '(1 2 3) -1).)
3774 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3775 (This was one of the bugs Peter Van Eynde reported back in July.)
3776 * The system now uses code inspired by Colin Walters' O(N)
3777 implementation of MAP (from the cmucl-imp@cons.org mailing
3778 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3779 inline the MAP operation, and there is more than one
3780 sequence argument to the MAP call (so that it can't just
3781 do ETYPECASE once and for all based on the type of the
3782 single sequence argument). (The old non-inline implementation
3783 of the general M-argument sequence-of-length-N case required
3784 O(M*N*N) time when any of the sequence arguments were LISTs.)
3785 * The QUIT :UNIX-CODE keyword argument has been renamed to
3786 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3787 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3789 * Raymond Wiker's patches to port dynamic loading from Linux to
3790 FreeBSD have been added.
3791 * The BUGS file is now more nearly up to date, thanks in large part
3792 to Martin Atzmueller's review of it.
3793 * The debugger now flushes standard output streams before it begins
3794 its output ("debugger invoked" and so forth).
3795 * The core version number and fasl file version number have both
3796 been incremented, because of incompatible changes in the layout
3798 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3799 used to not be called for a saved Lisp image.)
3800 * Martin Atzmueller's version of a patch to fix a compiler crash,
3801 as posted on sbcl-devel 13 September 2000, has been installed.
3802 * Instead of installing Martin Atzmueller's patch for the
3803 compiler transform for SUBSEQ, I deleted the compiler transform,
3804 and transforms for some similar consing operations.
3805 * A bug in signal handling which kept TRACE from working on OpenBSD
3807 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3808 away by constant folding
3809 * The system now defines its address space constants in one place
3810 (in the Lisp sources), and propagates them automatically elsewhere
3811 (through GENESIS and the sbcl.h file). Therefore, patching the
3812 address map is less unnecessarily tedious and error-prone. The
3813 Lisp names of address space constants have also been systematized.
3814 * CVS tags like dollar-Header-dollar have been removed from
3815 the sources, because they have never saved me trouble and
3816 they've been source of trouble working with patches and other
3817 diff-related operations.
3818 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3819 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3821 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3823 * The system has been ported to OpenBSD.
3824 * The system now compiles with a simple "sh make.sh" on the systems
3825 that it's supported on. I.e., now you no longer need to tweak
3826 text in the target-features.lisp-expr and symlinks in src/runtime/
3827 by hand, the make.sh takes care of it for you.
3828 * The system is no longer so grossly inefficient when compiling code
3829 involving vectors implemented as general (not simple) vectors (VECTOR T),
3830 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3831 which dares to use the various sequence functions on non-simple
3832 vectors, takes less of a performance hit.
3833 * There is now a primitive type predicate VECTOR-T-P
3834 to test for the (VECTOR T) type, so that e.g.
3835 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3836 can now be compiled with some semblance of efficiency. (The old code
3837 turned the type declaration into a full call to %TYPEP at runtime!)
3838 * AREF on (VECTOR T) is still not fast, since it's still compiled
3839 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3840 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3841 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3842 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3843 without making full calls to SUBTYPEP at runtime.
3844 (Some analogous efficiency issues for non-simple vectors specialized to
3845 element types other than T, or for non-simple multidimensional arrays,
3846 have not been addressed. They could almost certainly be handled the
3847 same way if anyone is motivated to do so.)
3848 * The changes in array handling break binary compatibility, so
3849 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3850 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3851 instead of (VALUES T T).
3852 * By following the instructions that Dan Barlow posted to sbcl-devel
3853 on 2 July 2000, I was able to enable primitive dynamic object
3854 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3855 functionality is not implemented (since it calls ld to resolve
3856 library references automatically, requiring RUN-PROGRAM for its
3857 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3858 try to resolve library references) is now supported.
3859 * The system now flushes the standard output streams when it terminates,
3860 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3861 them at several other probably-convenient times, e.g. in each pass of
3862 the toplevel read-eval-print loop, and after evaluating a form given
3863 as an "--eval" command-line option. (These changes were motivated by a
3864 discussion of stream flushing issues on cmucl-imp in August 2000.)
3865 * The source transform for TYPEP of array types no longer assumes
3866 that an array whose element type is a not-yet-defined type
3867 is implemented as an array of T, but instead punts, so that the
3868 type will be interpreted at runtime.
3869 * There is now some support for cross-compiling in make.sh: each of
3870 the phases of make.sh has its own script. (This should be transparent
3871 to people doing ordinary, non-cross-compile builds.)
3872 * Since my laptop doesn't have hundreds of megabytes of memory like
3873 my desktop machine, I became more motivated to do some items on
3874 my to-do list in order to reduce the size of the system a little:
3875 ** Arrange for various needed-only-at-cold-init things to be
3876 uninterned after cold init. To support this, those things have
3877 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3878 symbols with such names are now uninterned after cold init).
3879 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3880 fasl files for cold load.
3881 ** Remove the old compiler structure pooling code (which used to
3882 be conditional on the target feature :SB-ALLOC) completely.
3883 ** Redo the representation of some data in cold init to be more compact.
3884 (I also looked into supporting byte compiled code at bootstrap time,
3885 which would probably reduce the size of the system a lot, but that
3886 looked too complicated, so I punted for now.)
3887 * The maximum signal nesting depth in the src/runtime/ support code has
3888 been reduced from 4096 to 256. (I don't know any reason for the very
3889 large old value. If the new smaller value turns out to break something,
3890 I'll probably just bump it back up.)
3891 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3893 * Many, many bugs reported by Peter Van Eynde have been added to
3894 the BUGS list; some have even been fixed.
3895 * While enabling dynamic object file loading, I tried to make the
3896 code easier to understand, renaming various functions and variables
3897 with less ambiguous names, and changing some function calling
3898 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3899 * While trying to figure out how to do the OpenBSD port, I tried to
3900 clean up some of the code in src/runtime/. In particular, I dropped
3901 support for non-POSIX signal handling, added various comments,
3902 tweaked the code to reduce the number of compilation warnings, and
3903 renamed some files to increase consistency.
3904 * To support the new automatic configuration functionality in make.sh,
3905 the source file target-features.lisp-expr has been replaced with the
3906 source file base-target-features.lisp-expr and the machine-generated
3907 file local-target-features.lisp-expr.
3908 * fixed a stupid quoting error in make.sh so that using CMU CL
3909 "lisp -batch" as cross-compilation host works again
3911 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3913 * DESCRIBE no longer tries to call itself recursively to describe
3914 bound/fbound values, so that it no longer fails on symbols which are
3915 bound to themselves (like keywords, T, and NIL).
3916 * DESCRIBE now works on generic functions.
3917 * The printer now prints less-screwed-up representations of closures
3918 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3919 * A private symbol is used instead of the :EMPTY keyword previously
3920 used to mark empty slots in hash tables. Thus
3921 (DEFVAR *HT* (MAKE-HASH-TABLE))
3922 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3923 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3924 now does what ANSI says that it should. (You can still get
3925 similar noncompliant behavior if bang on the hash table
3926 implementation with all the symbols you get back from
3927 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3928 This breaks binary compatibility, since tests for equality to
3929 :EMPTY are wired into things like the macroexpansion of
3930 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3932 * There's now a minimal placeholder implementation for CL:STEP,
3933 as required by ANSI.
3934 * An obscure bug in the interaction of the normal compiler, the byte
3935 compiler, inlining, and structure predicates has been patched
3936 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3937 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3939 * Missing ordinary arguments in a macro call are now detected even
3940 when the macro lambda list contains &KEY or &REST.
3941 * The debugger no longer complains about encountering the top of the
3942 stack when you type "FRAME 0" to explicitly instruct it to go to
3943 the top of the stack. And it now prints the frame you request even
3944 if it's the current frame (instead of saying "You are here.").
3945 * As specified by ANSI, the system now always prints keywords
3946 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3948 * The default initial SIZE of HASH-TABLEs is now smaller.
3949 * Type information from CLOS class dispatch is now propagated
3950 into DEFMETHOD bodies, so that e.g.
3951 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3953 is now basically equivalent to
3954 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3955 (DECLARE (TYPE SINGLE-FLOAT X))
3957 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3958 operation, without having to do run-time type dispatch.
3959 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3960 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3961 * Since I don't seem to be making big file reorganizations very often
3962 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3963 is overflowing my ability to conveniently back them up), I've finally
3964 checked the system into CVS. (The CVS repository is on my home system,
3965 not at SourceForge -- putting it on SourceForge might come later.)
3966 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3967 high-level GC-NOTIFY-FOO functions send their output. (There's
3968 still very little control of where low-level verbose GC functions
3969 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3970 less than it used to -- the GC-NOTIFY-FOO functions are now under
3971 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3972 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3973 in only one place in the source code, and propagates it automatically
3974 everywhere that it's needed. Thus e.g. when I bump the version from
3975 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3976 * The C source files now include boilerplate legalese and documentation
3977 at the head of each file (just as the Lisp source files already did).
3978 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3979 to his page will be replaced with a link to his new CLiki service.
3981 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3983 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3984 * The build process now looks for GNU make under the default name "gmake",
3985 instead of "make" as it used to. If GNU make is not available as "gmake"
3986 on your system, you can change this default behavior by setting the
3987 GNUMAKE environment variable.
3988 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3989 can build without error under CMU CL.
3991 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3993 * There is now a partial SBCL user manual (with some new text and some
3994 text cribbed from the CMU CL manual).
3995 * The beginnings of a profiler have been added (starting with the
3996 CMU CL profiler and simplifying and cleaning up). Eventually the
3997 main interface should be through the TRACE macro, but for now,
3998 it's still accessed through vaguely CMU-CL-style functions and macros
3999 exported from the package SB-PROFILE.
4000 * Some problems left over from porting CMU CL to the new
4001 cross-compilation bootstrap process have been cleaned up:
4002 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
4003 instead of SB!XC:DEFMACRO, compounded by an oversight on my
4004 part when getting rid of the compiler *BACKEND* stuff.)
4005 ** The value of *NULL-TYPE* was screwed up, because it was
4006 being initialized before the type system knew the final
4007 definition of the 'NULL type. This screwed up several key
4008 optimizations in the compiler, causing inefficiency in all sorts
4009 of places. (I found it because I wanted to understand why
4010 GET-INTERNAL-RUN-TIME was consing.)
4011 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
4012 PROCLAIM FTYPE information. Unfortunately this broke binary
4013 compatibility again, since now the forms output by DEFGENERIC
4014 to refer to functions which didn't exist in 0.6.3.
4015 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
4016 can use the new (as of 0.6.3) transform for SOME into MAP into
4018 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
4019 values to (INTEGER 0 1000000), so that the time code will no longer
4020 occasionally get blown up by Linux returning 1000000 microseconds
4021 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
4022 its output conform to the ANSI spec. (Alas, this makes its output
4023 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
4024 * A full call to MAP NIL with a single sequence argument no longer conses.
4025 * fixes to problems pointed out by Martin Atzmueller:
4026 * The manual page no longer talks about multiprocessing as though
4027 it were currently supported.
4028 * The ILISP support patches have been removed from the distribution,
4029 because as of version 5.10.1, ILISP now supports SBCL without us
4030 having to maintain patches.
4031 * added a modified version of Raymond Toy's recent CMU CL patch for
4032 EQUALP comparison of HASH-TABLE
4034 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
4036 * The system still can't cross-compile itself with
4037 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
4038 entails), but at least it can compile more of itself that way
4039 than it used to be able to, and various buglets which were uncovered
4040 by trying to cross-compile itself that way have now been fixed.
4041 * This release breaks binary compatibility again. This time
4042 at least I've incremented the FASL file format version to 2, so that the
4043 problem can be detected reliably instead of just causing weird errors.
4044 * various new style warnings:
4045 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
4046 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
4047 ** using the lexical binding of a variable named in the *FOO* style
4048 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
4049 as specified by ANSI.
4050 * *RANDOM-STATE* is no longer automatically initialized from
4051 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
4052 default behavior of the system is to repeat its behavior every time
4053 it's run. If you'd like to change this behavior, you can always
4054 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
4055 old convention there was no comparably easy way to get the system to
4056 repeat its behavior every time it was run.
4057 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
4058 FTYPE declarations has been removed, in favor of their ANSI
4059 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
4060 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
4061 the types of their sequence arguments can be determined at compile time.
4062 This is done through a new open code expansion for MAP which eliminates
4063 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
4064 argument types can be determined at compile time.
4065 * The optimizer now transforms COERCE into an identity operation when it
4066 can prove that the coerced object is already of the correct type. (This
4067 can be a win for machine generated code, including the output of other
4068 optimization transforms, such as the MAP transform above.)
4069 * Credit information has been moved from source file headers into CREDITS.
4070 * Source file headers have been made more standard.
4071 * The CASE macro now compiles without complaining even when it has
4074 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
4076 * (Note that the way that the PCL macroexpansions were rewritten
4077 to accommodate the change in DEFGENERIC below breaks binary
4078 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
4079 not run under sbcl-0.6.2. Once we get out of alpha releases,
4080 i.e. hit release 1.0.0, we'll probably try to maintain binary
4081 compatibility between maintenance releases, e.g. between sbcl-1.4.3
4082 and sbcl-1.4.4. Until then, however, it might be fairly common
4083 for maintenance releases to break binary compatibility.)
4084 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
4086 * The reporting of unhandled signals has been changed to print some
4087 explanatory text as well as the report form. (Previously only
4088 the report form was printed.)
4089 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
4090 it defines, so that the compiler no longer issues undefined function
4091 warnings for compiled-but-not-yet-loaded generic functions.
4092 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
4093 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
4094 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
4095 section of the ANSI spec are supported.
4096 * The "" nickname for the "KEYWORD" package has been removed.
4097 The reader still handles symbol tokens which begin with a package marker
4098 as keywords, but it doesn't expose its mechanism for doing so in the
4099 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
4100 * The system now issues STYLE-WARNINGs for contradictory TYPE
4101 proclamations. (Warnings for contradictory FTYPE proclamations would
4102 be nice too, but those can't be done usefully unless the type system
4103 is made smarter about FUNCTION types.)
4104 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
4105 systematized, so that "*target-*.lisp is supposed to exist only on the
4106 target and imply that there's a related file which exists on the
4107 host, and *host-*.lisp is supposed to exist only on the host and imply
4108 that there's a related file which exists on the target. This involves a
4109 lot of renaming. Hopefully the acute confusion caused by the renaming
4110 will be justified by the reduction in chronic confusion..
4111 ** runtime-type.lisp -> early-target-type.lisp
4112 ** target-type.lisp -> late-target-type.lisp
4113 ** early-host-format.lisp -> early-format.lisp
4114 ** late-host-format.lisp -> late-format.lisp
4115 ** host-error.lisp -> misc-error.lisp
4116 ** early-error.lisp -> early-target-error.lisp
4117 ** late-error.lisp -> late-target-error.lisp
4118 ** host-defboot.lisp -> early-defboot.lisp
4119 ** code/misc.lisp -> code/target-misc.lisp
4120 ** code/host-misc.lisp -> code/misc.lisp
4121 ** code/numbers.lisp -> code/target-numbers.lisp
4122 ** code/early-numbers.lisp -> numbers.lisp
4123 ** early-host-type.lisp -> early-type.lisp
4124 ** late-host-type.lisp -> late-type.lisp
4125 ** host-typep.lisp -> typep.lisp
4126 ** load.lisp -> target-load.lisp
4127 ** host-load.lisp -> load.lisp
4128 ** host-disassem.lisp -> disassem.lisp
4129 ** host-insts.lisp -> insts.lisp
4130 ** byte-comp.lisp -> target-byte-comp.lisp
4131 ** host-byte-comp.lisp -> byte-comp.lisp
4132 ** host-signal.lisp -> signal.lisp
4133 ** host-defstruct.lisp -> defstruct.lisp
4134 ** late-target-type.lisp -> deftypes-for-target.lisp
4135 Furthermore, several other previously target-only files foo.lisp (e.g.
4136 hash-table.lisp and random.lisp) have been split into a target-and-host
4137 foo.lisp file and a target-only target-foo.lisp file, with their key type
4138 definitions in the target-and-host part, so that the cross-compiler will
4139 know more about target types.
4140 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
4141 gone away. In their place are various *BACKEND-FOO* variables
4142 corresponding to the slots of the old structure.
4143 * A bug which caused the SB-COLD bootstrap-time package to be propagated
4144 into the target SBCL has been fixed.
4145 * The chill.lisp system for loading cold code into a running SBCL
4147 * Support for the CMU CL "scavenger hook" extension has been removed.
4148 (It was undocumented and unused in the CMU CL sources that SBCL was
4149 derived from, and stale in sbcl-0.6.1.)
4150 * Various errors in the cross-compiler type system were detected
4151 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
4152 (enabling various consistency checks). Many of them were fixed,
4153 but some hard problems remain, so the compiler is back to
4154 running without *TYPE-SYSTEM-INITIALIZED* for now.
4155 * As part of the cross-compiler type system cleanup, I implemented
4156 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
4157 * I have started adding UNCROSS calls throughout the type system
4158 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
4159 on cross-compiler input files will be able to go away, and various
4161 * CONSTANTP now returns true for quoted forms (as explicitly required
4164 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
4166 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
4167 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
4168 (MAKE-LIST -1). In the longer term, it ought to become true
4169 that declarations are assertions even at SAFETY 1. For now, it's not
4170 quite true even at SAFETY 3, but it's at least more nearly true..
4171 (Note that this change seems to increases the size of the system by
4172 O(5%) and to decrease the speed of the compiler by 20% or more.)
4173 * changed ALIEN printing to be much more abbreviated, as a short-term fix
4174 for the problem of printing dozens of lines of distracting information
4175 about low-level system machinery as part of the top stack frame
4176 on entry to the debugger when an undefined function was called.
4177 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
4178 is not reset to COMMON-LISP-USER.
4179 * Compilation of stuff related to dyncount.lisp has been made conditional
4180 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
4181 smaller. The various dyncount-related symbols have been moved into
4182 a new "SB-DYNCOUNT" package.
4183 * tty-inspect.lisp has been renamed to inspect.lisp.
4184 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
4185 feature has gone away. (When we eventually port to other flavors of
4186 libc and/or Unix, we'll try to make the differences between flavors
4187 invisible at the user level.)
4188 * Various other *FEATURES* tags, and/or their associated conditionals,
4189 have been removed if obsolescent, or given better documentation, or
4190 sometimes given more-mnemonic names.
4192 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
4194 * tidied up "make.sh" script
4195 * tidied up system directory structure
4196 * better "clean.sh" behavior
4197 * added doc/FOR-CMUCL-DEVELOPERS
4198 * many many small tweaks to output format, e.g. removing possibly-confusing
4199 trailing #\. character in DESCRIBE-INSTANCE
4200 * (EQUALP #\A 'A) no longer signals an error.
4201 * new hashing code, including EQUALP hashing
4202 * tidied up Lisp initialization and toplevel
4203 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4204 * command line argument processing
4205 * added POSIX-GETENV function to deal with Unix-ish environment variables
4206 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4207 terminating SBCL on EOF
4208 * non-verbose GC by default
4209 * There is no more "sbcl" shell script; the sbcl file is now the C
4210 runtime executable (just like CMU CL).
4211 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4213 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4214 symbol and package information as Lisp native symbol and package objects
4215 instead of strings naming symbols and strings naming packages. This way,
4216 whenever packages are renamed (as in warm init), debug information is
4217 transformed along with everything else.
4218 * tweaked the optimization policy declarations which control the building
4219 of SBCL itself. Now, among other things, the system no longer saves
4220 source location debugging information. (This helps two problems at once
4221 by reducing SBCL size and by keeping SBCL from trying to look for its
4222 sources -- which may not exist -- when reporting errors.)
4223 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4224 debugging and testing purposes
4225 * cleaned up printing, making the printer call PRINT-OBJECT for
4226 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4227 methods, giving nearly-ANSI behavior
4228 * converted almost all special variables to use *FOO* naming convention
4229 * deleted PARSE-TIME functionality, since it can be done portably
4230 * moved some files out of cold init into warm init
4231 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4233 * regularized formatting of source files
4234 * added an install.sh script
4235 * fixed ridiculous memory usage of cross-compiler by making
4236 compiler/alloc.lisp not try to do pooling unless it can hook
4237 itself into the GC of the cross-compilation host. Now the system
4238 builds nicely on my old laptop.
4239 * added :SB-ALLOC in target-features.lisp-expr
4240 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4241 was not implemented)
4242 * re-did condition handling and note reporting in the compiler. Notes
4243 are no longer handled by signalling conditions. Style warnings
4244 and warnings are handled more correctly and reported in such a way
4245 that it's easy to find one or the other in your output (so that you
4246 can e.g. figure out which of many problems caused COMPILE-FILE to
4248 * changed the severity of several compiler warnings from full WARNING
4249 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4250 compiler note reporting so that it doesn't use the condition system
4251 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4252 COMPILE-FILE command)
4253 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4254 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4255 no longer supported, since their implementation was deeply intertwingled
4256 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4257 * removed bogus "support" for compiler macros named (SETF FOO), and
4258 removed the compiler macro for SETF INFO (but only after making a fool
4259 of myself on the cmucl-imp mailing list by posting a bogus patch for
4260 DEFINE-COMPILER-MACRO..)
4261 * Compiled files containing forms which have side effects on the Lisp
4262 reader (such as DEFPACKAGE forms) are now handled more correctly.
4263 (Compiler queuing of top level lambdas has been suppressed by setting
4264 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4265 * deleted various currently-unused source files, e.g. gengc.lisp. They
4266 may be added back at some point e.g. when porting to other architectures,
4267 but until they are it's distracting to distribute them and to try to
4269 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4270 there were so many of them they're just distractions, and UNCROSS is
4271 known to be able to handle the current sources
4272 * moved PROFILE functionality into TRACE, so that it will be clear
4273 how the wrapping and unwrapping of functions when you profile them
4274 interacts with the wrapping and unwrapping of functions when you
4275 trace them. (Actually, the functionality isn't there yet, but at least
4276 the interface specification is there. Hopefully, the functionality will
4277 arrive with some future maintenance release.)
4278 * removed host-oops.lisp
4279 * changed signature of QUIT function to allow UNIX-CODE argument
4280 * fixed READ-SEQUENCE bug
4281 * tweaked verbose GC output so that it looks more like the progress
4282 output that ANSI specifies for functions like LOAD
4283 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4284 * added <http://sbcl.sourceforge.com> to the banner information printed by