1 ;;;; -*- coding: utf-8; -*-
2 changes in sbcl-1.0.1 relative to sbcl-1.0:
3 * improvement: sb-sprof traces call stacks to an arbitrary depth on
4 x86/x86-64, rather than the previous fixed depth of 8
5 * bug fix: non-ascii command-line arguments are processed correctly
6 (thanks to Yaroslav Kavenchuk)
7 * bug fix: TRACE :ENCAPSULATE NIL (and function end breakpoints)
9 * bug fix: non-required arguments were not passed correctly when a method
10 defined using DEFMETHOD was called from a mop-generated method using
11 CALL-NEXT-METHOD (reported by Pascal Costanza)
12 * bug fix: recursion is now permitted in accessors through
13 SLOT-UNBOUND. (reported by Pascal Costanza)
14 * bug fix: an error was signaled at startup if the HOME environment
15 variable was defined, but had an empty value (reported by Peter Van Eynde)
16 * bug fix: non ordinary lambda-list keyword in ordinary lambda lists
17 signal a PROGRAM-ERROR, not a BUG.
18 * optimization: loading generic functions no longer takes O(n^2) time,
19 proportional to the amount of methods in the generic function
20 (reported by Todd Sabin and Jeremy Brown)
21 * optimization: the FIND and POSITION family of sequence functions
22 are significantly faster on arrays whose element types have been
25 changes in sbcl-1.0 relative to sbcl-0.9.18:
26 * improvement: experimental support for threading on FreeBSD/x86.
27 (thanks to NIIMI Satoshi)
28 * improvement: runtime option --dynamic-space-size can be used
29 to set the size of the dynamic space reserved on startup.
30 * improvement: floating point modes in effect are now saved in
31 core, and restored on startup.
32 * improvement: GET-INTERNAL-REAL-TIME now reports the time since
33 startup, not time since first call to GET-INTERNAL-REAL-TIME.
34 * improvement: SAVE-LISP-AND-DIE explicitly checks that multiple
35 threads are not running after *SAVE-HOOKS* have run.
36 * improvement: writes to CLOS instance slots are type-checked in code
37 compiled with (SAFETY 3)
38 * improvement: floating-point exception handling on FreeBSD (thanks to
40 * improvement: SB-POSIX supports time(2), utime(2) and utimes(2)
41 (thanks to Zach Beane)
42 * improvement: support for files larger than 2GB for CL streams and SB-POSIX
44 * improvement: added support for the Shift-JIS external format.
45 (contributed by NIIMI Satoshi)
46 * improvement: callbacks are supported on Linux/PPC. (thanks to
48 * bug fix: compiler bug triggered by a (non-standard) VALUES
49 declaration in a LET* was fixed. (reported by Kaersten Poeck)
50 * bug fix: file compiler no longer confuses validated and already
51 dumped structurres. (reported by Kaersten Poeck)
52 * bug fix: ADJUST-ARRAY :FILL-POINTER T on an array without a
53 fill-pointer signals a type-error as required. (thanks to
55 * bug fix: disassemly of funcallable instances works.
56 * bug fix: single stepping on PPC.
57 * bug fix: fix thread-safety problems in the type system (generally
58 manifesting as nonsensical errors like "STRING is a bad type specifier
59 for sequences" or "The value 1 is not of type FIXNUM")
60 * bug fix: version components are handled correctly in TRANSLATE-PATHNAME
61 (reported by Josip Gracin)
62 * bug fix: an error is signaled for attempts to displace arrays with
63 incompatible element types (thanks to Mario Mommer)
64 * bug fix: more correct handling of wide characters in debug info
65 (bug reported by Attila Lendvai and fixed by Juho Snellman)
66 * optimization: method calls with &OPTIONAL or &KEY arguments are faster
67 and don't cause extra consing
68 * optimization: MAP and MAP-INTO are significantly faster on vectors
69 whose elements types have been declared.
70 * Improvements to SB-SPROF:
71 ** Support for allocation profiling
72 ** Reduced profiling overhead, especially for long profiling runs
73 * Improvements to the Windows port:
74 ** floating point exceptions are now reported correctly.
75 ** stack exhaustion detection works partially.
76 ** more accurate GET-INTERNAL-REAL-TIME.
77 ** better RUN-PROGRAM behaviour in case of errors in the child
79 ** PROBE-FILE now simplifies pathnames correctly.
80 ** DIRECTORY now works correctly with :WILD-INFERIORS.
81 ** DECODE-UNIVERSAL-TIME works on times before 00:00:00 January
82 1st 1970 (although time timezone data will be unreliable).
83 ** Hyperbolic functions TANH, ASINH, ACOSH, and ATANH work.
85 changes in sbcl-0.9.18 (1.0.beta?) relative to sbcl-0.9.17:
86 * enhancement: SB-POSIX now supports cfsetispeed(3), cfsetospeed(3),
87 cfgetispeed(3), cfgetospeed(3), and related constants. (thanks to
89 * bug fix: two potential GC deadlocks affecting threaded builds.
90 * bug fix: (TYPEP #\A '(NOT (MEMBER #\" #\{ #\:))) now correctly
91 returns T (reported by Anton Kazennikov)
92 * bug fix: the STORE-VALUE restart of CHECK-TYPE works correctly
93 with non-variable places
94 * bug fix: remove a race condition in the setting of
95 funcallable-instance functions, this should make threaded CLOS
96 code more stable against memory faults.
97 * bug fix: corruption of specials when unbinding is interrupted by an
98 asynchronous unwind (reported by Hannu Koivisto)
99 * improvement: the debugger will now also display local variables that
100 are only used once, for code compiled with a DEBUG optimization quality
103 changes in sbcl-0.9.17 (0.9.99?) relative to sbcl-0.9.16:
104 * feature: weak hash tables, see MAKE-HASH-TABLE documentation
105 * incompatible change: External-format support for FFI calls. The
106 SB-ALIEN:C-STRING no longer implies an ASCII
107 external-format. Instead the string is subject to external-format
108 conversion. Additionally return values of type SB-ALIEN:C-STRING
109 are by default of type (SIMPLE-ARRAY CHARACTER), not
110 SIMPLE-BASE-STRING. For an alien type that behaves like the old
111 SB-ALIEN:C-STRING type, use (SB-ALIEN:C-STRING :EXTERNAL-FORMAT
112 :ASCII :ELEMENT-TYPE BASE-CHAR). (thanks to Yaroslav Kavenchuk)
113 * incompatible change: SB-EXT package no longer contains the
114 following unused symbols: *GC-NOTIFY-AFTER*, *GC-NOTIFY-BEFORE*,
115 *GC-NOTIFY-STREAM*, *ERROR-PRINT-LENGTH*, *ERROR-PRINT-LEVEL*,
117 * incompatible change: the single-stepper is no longer available
118 on Alpha, Mips and Sparc platforms.
119 * minor incompatible change: the direct superclasses of
120 SB-MOP:FUNCALLABLE-STANDARD-OBJECT are (FUNCTION STANDARD-OBJECT),
121 not (STANDARD-OBJECT FUNCTION). This makes the
122 class-precedence-lists of GENERIC-FUNCTION and
123 STANDARD-GENERIC-FUNCTION comply with the requirement of ANSI
125 * minor incompatible change: the default stream external format on
126 non-unicode SBCL is no longer detected from the locale, but is always
128 * new feature: Add a version of evaluator that uses an interpreter instead
129 of the compiler. EVAL still uses the compiler by default, to switch it
130 to use the interpreter, set the value of the variable
131 SB-EXT:*EVALUATOR-MODE* to :INTERPRET.
132 * minor incompatible change: the single-stepper REPL has been merged
133 with the normal debugger (see the "Stepping" heading of the debugger help
134 for more details). The debugger command STEP will no longer switch
135 to the single-stepper REPL.
136 * bug fix: ENOUGH-NAMESTRING on pathnames with no name and a pattern
137 for a type now works.
138 * bug fix: loading of default sysinit file works. (thanks to Leonid
140 * bug fix: better detection of circularities in the file-compiler.
141 (reported by Marco Monteiro)
142 * bug fix: the CL pathname functions now work with files that have
143 non-ASCII characters in their names (thanks to Yaroslav Kavenchuk)
144 * bug fix: The :PTY argument for RUN-PROGRAM will now work on
145 systems with Unix98 pty semantics.
146 * bug fix: ASDF-INSTALL will now work with bsd tar.
147 * bug fix: ASDF-INSTALL uses GNU tar on Solaris (thanks to Josip
149 * bug fix: timers expiring in dead threads no longer cause a
150 type-error (reported by Paul "Nonny Mouse").
151 * bug fix: thanks to more lightweight single-stepper instrumentation,
152 code compiled with (DEBUG 3) will compile and execute significantly faster,
153 and will have more accurate type-inferencing than before
154 * bug fix: SLOT-VALUE optimizations are no longer done on method parameters
155 whose bindings are modified
156 * improvements to the win32 port (thanks to Yaroslav Kavenchuk):
157 ** bug fix: arguments to RUN-PROGRAM are escaped correctly
158 ** replace dummy implementations of CL:MACHINE-INSTANCE and
159 CL:SOFTWARE-VERSION with proper version
161 changes in sbcl-0.9.16 relative to sbcl-0.9.15:
162 * feature: implemented the READER-METHOD-CLASS and
163 WRITER-METHOD-CLASS portion of the Class Initialization Protocol
164 as specified by AMOP.
165 * incompatible change: variable SB-EXT:*USE-IMPLEMENTATION-TYPES*
167 * optimization: faster LOGCOUNT implementation on x86 and x86-64
168 (thanks to Lutz Euler)
169 * optimization: hashing of general arrays and vectors has been
170 improved. (reported by Any Fingerhut)
171 * enhancement: SB-INTROSPECT is now able to find definitions of
172 profiled functions. (thanks to Troels Henriksen)
173 * enhancement: compiler-macro expansion applies now to FUNCALL forms
174 as well, allowing compiler-macros for SETF-functions to expand.
175 * enhancement: step-instrumentation no longer wraps known
176 single-value functions with multiple-value context, allowing
177 better type inference.
178 * fixed bug #337: use of MAKE-METHOD in method combination now works
179 even in the presence of user-defined method classes. (reported by
180 Bruno Haible and Pascal Costanza)
181 * fixed bug #339(c): if there are applicable methods not part of any
182 long-form method-combination group, call INVALID-METHOD-ERROR.
183 (reported by Bruno Haible)
184 * fixed bug #361: the :FUNCTION initarg in the protocol for
185 initialization of methods can now be used to override
186 internally-produced optimized functions. (reported by Bruno
188 * bug fix: extensions of MAKE-METHOD-LAMBDA which wrap the
189 system-provided lambda expression no longer cause warnings about
190 unbound #:|pv-table| symbols.
191 * bug fix: improved the handling of type declarations and the
192 detection of violations for keyword arguments with non-constant
194 * bug fix: potentially erronous calls to PATHNAME and
195 MERGE-PATHNAMES were being flushed in some cases.
196 (reported by Richard Kreuter)
197 * bug fix: compiled calls to TYPEP were mishandling obsolete
198 instances. (reported by James Bielman and Attila Lendvai)
199 * bug fix: format strings with ~> without matching ~< no longer
200 trigger an AVER, but signal an understandable error instead.
201 (reported by Antonio Martinez)
202 * bug fix: specifying an output-file without a pathname-type for
203 COMPILE-FILE or COMPILE-FILE-PATHNAME resulted in using the type
204 of input-file instead of "fasl". (reported by Robert Dodier)
205 * bug fix: compiler-macro lambda-list parsing of FUNCALL forms.
206 (reported by James Y Knight).
207 * bug fix: compiler-macros-function did not consider the environment
208 argument for shadowing by local functions.
209 * bug fix: compiler-macros expansion was inhibited by local INLINE
211 * bug fix: inline expansions of known functions were subject to
212 step-instrumentation in high debug policies, leading to problems
214 * bug fix: compiler failed to differentiate between different CONS
216 * bug fix: fixed input, output and error redirection in RUN-PROGRAM
217 for win32. (thanks to Mike Thomas and Yaroslav Kavenchuk)
218 * bug fix: #368: incorrect use of expressed vs. upgraded array
220 * bug fix: #306a: more precise unions of array types.
221 * thread-safety improvements:
222 ** CONDITION-WAIT could return early on Linux, if the thread was
223 interrupted and subsequently continued with SIGCONT.
224 ** STABLE-SORT and ADJUST-ARRAY were not reentrant.
226 changes in sbcl-0.9.15 relative to sbcl-0.9.14:
227 * added support for the ucs-2 external format. (contributed by Ivan
229 * minor incompatible change: pretty printing of objects of type
230 (cons symbol) is, in the default pprint-dispatch-table, now
231 sensitive to whether the symbol satisfies FBOUNDP. (thanks to
233 * minor incompatible change: SB-MOP:FINALIZE-INHERITANCE is now
234 called later in a class's lifetime, possibly as late as when the
235 first instance of the class is created. Previously,
236 SB-MOP:FINALIZE-INHERITANCE was called by the system as soon as a
237 class became finalizeable.
238 * fixed bug: FILE-POSITION sometimes returned inconsistent results
239 for multibyte external-format streams. (thanks to "vbzoli")
240 * fixed bug: CHANGE-CLASS would fail to preserve the values of slots
241 with :ALLOCATION :CLASS inherited from superclasses of the
243 * fixed bug: anonymous classes can now be created using the :NAME
244 initarg and MAKE-INSTANCE / REINITIALIZE-INSTANCE, as specified by
245 AMOP. (reported by Leonid Slobodov on comp.lang.lisp)
246 * fixed bug: core-files saved with :EXECUTABLE T can again be
247 executed when SBCL_HOME isn't set. (reported by James Knight)
248 * fixed bug: toplevel LOCALLY forms with declarations could
249 occasionally get miscompiled. (reported by Yaroslav Kavenchuk)
250 * fixed bug: printing from several different threads using different
251 values of *print-case* could cause invalid output, due to
252 some internal special variables of the printer not being bound
253 thread-locally (reported by Max Mikhanosha)
254 * fixed bug: SPECIALIZER metaobjects (including anonymous classes
255 and EQL-SPECIALIZERs) can be used as specializers to DEFMETHOD.
256 (reported by Pascal Costanza)
257 * fixed bug: FINALIZE-INHERITANCE is called from
258 REINITIALIZE-INSTANCE on classes when the class has previously
259 been finalized, as required by AMOP.
260 * minor code generation optimizations:
261 ** better register allocation in CLOS dispatching functions
262 ** overflow detection when coercing signed bytes to fixnums on x86-64
263 ** is now implemented with one IMUL instruction instead of three shifts
264 ** more efficient bit-vector access on x86 and x86-64
265 ** more efficient access to raw structure slots on x86 and x86-64
266 * fixed some bugs revealed by Paul Dietz' test suite:
267 ** ENSURE-DIRECTORIES-EXIST.8: ENSURE-DIRECTORIES-EXIST must
270 changes in sbcl-0.9.14 relative to sbcl-0.9.13:
271 * feature: thread support on Solaris/x86, and experimental thread support
273 * feature: SBCL now tries to signal a STORAGE-CONDITION when running out
275 * feature: SBCL now provides USE-VALUE and STORE-VALUE restarts in the
276 default method for SLOT-UNBOUND.
277 * minor incompatible change: prevent the user from specializing the
278 new-value argument to SB-MOP:SLOT-VALUE-USING-CLASS. It's
279 somewhat counter to the intent of the protocol, I (CSR) think, and
280 additionally it just doesn't work in SBCL as currently
281 implemented, thanks to optimizations (that are always valid for
282 the other three SLOT-VALUEish functions, but not for the setter).
283 * minor incompatible change: the :SB-LDB feature is now enabled by
284 default, and DISABLE-DEBUGGER and ENABLE-DEBUGGER also affect
285 the low-level debugger.
286 * enchancement: RUN-PROGRAM is now able to extract the file-descriptor
287 from SYNONYM-STREAM and TWO-WAY-STEAMS provided they can be decomposed
288 down to an SB-SYS:FD-STREAM, allowing direct communication in
289 more cases. Temporary files and pipes are still used as a fallback
291 * thread-safety: DECODE-UNIVERSAL-TIME & GET-DECODED-TIME depended
292 on the non-reentrant C functions localtime(3) and gmtime(3).
293 * bug fix: global optimization policy was not visible in LOCALLY and
295 * bug fix: class objects can be used as specializers in methods.
296 (reported by Pascal Costanza)
297 * bug fix: native unparsing of pathnames with :DIRECTORY NIL failed
298 with a type error. (reported by blitz_ on #lisp)
299 * bug fix: unparsing logical pathnames with :NAME :WILD :TYPE NIL
300 failed with a type error. (reported by Pascal Bourguignon)
301 * bug fix: merging pathnames against defaults with :DIRECTORY
302 starting with '(:RELATIVE :BACK) should preserve the :BACK.
303 (reported by James Y Knight)
304 * bug fix: saving large (>2GB) cores on x86-64 now works
305 * bug fix: a x86-64 backend bug when compiling (setf aref) with a
306 constant index and a (simple-array (signed-byte 32)) array
307 * bug fix: NAME-CHAR on an invalid symbol no longer signals an
308 error (patch by Robert J. Macomber)
309 * feature: TIME now displays the amount of run-time spent in GC
310 * bug fix: The debugger now does a better job of respecting
311 (PUSH '(*PRINT-CIRCLE* . T) SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*)
312 when printing SB-DEBUG:*DEBUG-CONDITION*. (This is a debugger-only
313 workaround for bug 403.)
314 * bug fix: floating point exception handling now works on FreeBSD
315 (thanks to NIIMI Satoshi)
316 * fixed some bugs revealed by Paul Dietz' test suite:
317 ** MISC.641: LET-conversion were not supposed to work in late
319 * improvements to the Win32/x86 port:
320 ** GET-INTERNAL-RUN-TIME implemented, thanks to Frank Buss.
321 ** improved SB-BSD-SOCKETS support, thanks to Timothy Ritchey.
323 changes in sbcl-0.9.13 relative to sbcl-0.9.12:
324 * new feature: source path information is generated for macro-expansion
325 errors for use in IDE's like Slime (thanks to Helmut Eller)
326 * bug fix: calls to the compiler no longer modify *RANDOM-STATE*
327 * bug fix: compiler does not loop forever on an invalid type in
329 * improvement: compilation of most CLOS applications is significantly
331 * optimization: added a limited bytecode compiler for simple toplevel
332 forms, speeding up compilation and FASL loading
333 * bug fix: the statistical profiler now properly distinguishes anonymous
336 changes in sbcl-0.9.12 relative to sbcl-0.9.11:
337 * minor incompatible change: in sbcl-0.9.11 (but not earlier
338 versions) SB-MOP:FINALIZE-INHERITANCE would recursively descend
339 into subclasses of the finalized class. Now user calls to
340 FINALIZE-INHERITANCE finalize just the one class, and calls by the
341 system return before any subclasses are finalized.
342 * minor incompatible change: The reader no longer ignores errors
343 regarding non-existent packages in #+ and #- feature tests.
344 * new feature: command line options --no-sysinit, --no-userinit to
345 inhibit loading the corresponding init files
346 * new feature: add a generic function SOCKET-SEND to SB-BSD-SOCKETS,
347 for sending data through UDP sockets (thanks to François-René Rideau)
348 * minor incompatible change: SIGPIPE is ignored and "Broken pipe"
349 error is signalled instead (thanks to François-René Rideau)
350 * minor incompatible change: Error signalling behaviour of lexical
351 operations violating package locks has changed slightly. Refer to
352 documentation on package locks for details.
353 * enhancement: EVAL can process IF-expressions without resorting to the
355 * bug fix: Some operations involving SIN, COS, or TAN weren't being
356 constant-folded properly due to missing out-of-line functions.
357 (reported by Mika Pihlajamäki)
358 * bug fix: LISTEN sometimes returned T even in cases where no data was
359 immediately available from the stream
360 * fixed bug: types of the last two arguments to SET-SYNTAX-FROM-CHAR
361 were reversed. (reported by Levente Mészáros)
362 * fixed bug: Tests for the (VECTOR T) type gave the wrong answer
363 when given a vector displaced to an adjustable array. (reported
365 * bug fix: derivation of float boundaries from numbers outside the
366 appropriate float range (reported by John Wiseman)
367 * bug fix: MAKE-LOAD-FORM-SAVING-SLOTS accepts en empty slot name
369 * bug fix: precomputing cache entries for generic functions with
370 some subclasses of specializers as yet invalid does not attempt to
371 fill a cache line with a negative offset. (reported by Levente
373 * improvements to DOCUMENTATION for TYPE and STRUCTURE doc-types:
374 allow condition class objects as arguments to DOCUMENTATION and
375 (SETF DOCUMENTATION); only find and set documentation for
376 structure names for the STRUCTURE doc-type. (suggested by Gary
378 * improvements to the Win32/x86 port:
379 ** (user-homedir-pathname) and default initialization file
380 locations now know about the user's "Documents and Settings"
381 directory (thanks to Yaroslav Kavenchuk)
382 ** run-program is implemented (thanks to Mike Thomas)
383 ** sockets support (thanks to Timothy Ritchey)
384 ** better backtrace support (thanks to Alastair Bridgewater)
385 ** sb-grovel supported
386 ** asdf-install and sb-posix work somewhat
387 ** capable of running Slime using SWANK:*COMMUNICATION-STYLE* NIL
388 * improvements to the Solaris/x86 port:
389 ** works on Solaris 11/Solaris Express
390 ** floating-point exception handling support
391 ** support for the breakpoint-based TRACE :ENCAPSULATE NIL facility
392 * fixed some bugs revealed by Paul Dietz' test suite:
393 ** REMOVE-METHOD returns its generic function argument even when
394 the method is not one of the generic functions' methods.
395 ** objects declared as MEMBER types can be admissible arguments to
397 ** printing characters should simply be printed by the FORMAT ~:C
399 ** compiler failure when compiling functions with hairy constant
400 defaults for optional parameters.
401 ** compiler produces wrong code when MAYBE-INLINE-expanding a
402 function, which is already optimized.
404 changes in sbcl-0.9.11 relative to sbcl-0.9.10:
405 * new platform: experimental support for SBCL x86/Darwin, including
406 MacOS X 10.4.5 on Intel.
407 * new feature: Unicode character names are now known to the system
408 (through CHAR-NAME and NAME-CHAR).
409 * new feature: the filesystem location of SBCL's core file is
410 exposed to lisp through the variable SB-EXT:*CORE-PATHNAME*.
411 * minor incompatible change: the contrib modules SB-POSIX and
412 SB-BSD-SOCKETS no longer depend on stub C libraries; the intent of
413 this change is to make it easier to distribute
414 location-independent binaries.
415 * bug fix: as implied by AMOP, standardized classes no longer have
416 slots named by external symbols of public packages. (reported by
418 * optimization: calling functions via constant symbols -- as in
419 (FUNCALL 'FOO) -- is now roughly as efficient as calling them
420 via the function object as in (FUNCALL #'FOO).
421 * optimization: on x86 and x86-64, the calling convention for the
422 case of dealing with an unknown number of values has been altered
423 to be friendlier to the prediction heuristics implemented,
424 particularly with reference to CALL and RET pairing. (thanks to
425 Alastair Bridgewater)
426 * optimization: on x86, the code for access to thread-local symbol
427 values and binding/unbinding of thread-local symbols is smaller.
428 (thanks to Alastair Bridgewater)
429 * enhancement: CONSTANTP is now able to determine constantness of
430 more complex forms, including calls to constant-foldable standardized
431 functions and some special forms beyond QUOTE.
432 * fixed bug: occasional GC crashes on Solaris/x86
433 * optimization: x86-64 supports stack allocation of results of simple
434 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT
435 * enchancement: the PROCESS-INPUT and -OUTPUT streams created by
436 SB-EXT:RUN-PROGRAM can be used for both character and byte IO
437 (thanks to James Knight)
438 * fixed bug: CL:LISTEN always returns NIL at end of file, as required
439 by the standard (thanks to Stephen Compall)
441 changes in sbcl-0.9.10 relative to sbcl-0.9.9:
442 * new feature: new SAVE-LISP-AND-DIE keyword argument :EXECUTABLE can
443 be used for bundling the runtime and the core file into one
444 executable binary. This feature is not currently supported on all SBCL
445 platforms. (thanks to James Bielman and NIIMI Satoshi)
446 * new feature: a generational or ephemeral garbage collector is now
447 the default on the PowerPC platform (both Linux and Darwin). The
448 old Cheney (stop and copy) collector is a build-time option.
449 (thanks to Cyrus Harmon, after Raymond Toy)
450 * minor incompatible change: the method by which SBCL finds its
451 contributed modules has changed; it no longer relies on symbolic
452 links from an $SBCL_HOME/systems directory, but searches directly
453 in the subdirectories of $SBCL_HOME.
454 * enhancement: the dynamic heap size on the Linux/PPC platform is
455 markedly larger, even using the older Cheney garbage collector.
456 * fixed bug #399: full call to DATA-VECTOR-REF in accesses to
457 certain complicated string types. (reported by Gary King)
458 * fixed bug: STRING-TO-OCTETS and OCTETS-TO-STRING did not convert
459 character codes. (thanks to Yaroslav Kavenchuk and Ivan Boldyrev)
460 * fixed bug: DOCUMENTATION on structures no longer signals an
461 error if no structure type of the right name exists. (reported by
463 * fixed bug: compiled calls to MAKE-INSTANCE where there is an
464 applicable non-standard primary or :AROUND method on
465 INITIALIZE-INSTANCE or SHARED-INITIALIZE and a non-keyword initarg
466 no longer cause unbound variable errors. (reported by Kevin Reid)
467 * fixed bug: metacircle resolution in cases where methods have slots
468 added before the slots from STANDARD-METHOD. (reported by Jean
470 * fixed bug: the Power PC assembly code for calling into lisp
471 sometimes computed its return address wrongly (depending on the
472 15th bit of the address, fixed at link time). This used to
473 manifest itself in a segmentation violation while building PCL.
474 (reported by Kevin Rosenberg, Eric Marsden, Lars Brinkhoff and
475 many others over the years)
476 * fixed bug: ROOM no longer reports silly numbers for stack usage if
477 the stack pointer (treated as a signed integer) is negative.
478 (thanks to Peter van Eynde)
480 changes in sbcl-0.9.9 relative to sbcl-0.9.8:
481 * new platform: experimental support for the Windows operating
482 system has been added. (thanks to Alastair Bridgewater)
483 * fixed several bugs in and robustified the PPC FFI (including
484 callbacks). (thanks to Cyrus Harmon and Heiner Schwarte)
485 * bug fix: allow non-simple string symbol names (reported by Paul
487 * bug fix: interrupt handling on NetBSD (thanks to Richard M
489 * bug fix: saving a core corrupted callbacks on x86/x86-64
490 * bug fix: closed a loophole in metacircularity detection and
491 grounding in the PCL implementation of CLOS.
492 * bug fix: TRUENAME on "/" no longer returns a relative pathname.
493 (reported by tomppa on #lisp)
494 * bug fix: clear the direction flag on Lisp -> C transitions, as
495 required by the x86-64 ABI. Fixes mysterious GC crashes on SuSE.
496 (reported by Andrej Grozin and Hendrik Maryns)
497 * optimization: major improvements to GC efficiency on GENCGC platforms
498 * optimization: faster implementation of EQUAL
499 * optimization: emit more efficient opcodes for some common
500 immediate->register MOV instructions on x86-64. (thanks to Lutz Euler)
501 * optimization: several other minor code-generation improvements on x86-64
502 * fixed segfaults on x86 FreeBSD 7-current. (thanks to NIIMI Satoshi)
504 changes in sbcl-0.9.8 relative to sbcl-0.9.7:
505 * minor incompatible change: (SETF CLASS-NAME) and (SETF
506 GENERIC-FUNCTION-NAME) are generic functions once more (reverting
507 the change in the 0.9.7 release). (SETF CLASS-NAME) is specified
508 by ANSI as a generic function, and for consistency (SETF
509 GENERIC-FUNCTION-NAME) is treated likewise.
510 * fixed bug #233.b: make constraint propagation notice when a variable
511 value is changed after it is referenced but before it is used
512 * fixed bug #296: no more arbitrary behaviour from filenames with
513 odd characters as --load arguments. (reported by Adam Warner)
514 * fixed bug #390: :CHARACTER-SET pathname components now work as
515 expected. (reported by Tim Daly Jr)
516 * fixed bug #391: complicated :TYPE intersections in slot
517 definitions no longer cause an error in PCL internals.
518 * fixed bug #392: plugged a hole in the obsolete-instance protocol.
519 * bug fix: FILE-STRING-LENGTH is now external-format sensitive,
520 returning the number of octets which would be written to the
521 file-stream. (thanks to Robert J. Macomber)
522 * bug fix: the SB-SIMPLE-STREAMS contrib passes external-format
523 arguments to the internal stream functions. (thanks to David
525 * bug fix: stack exhaustion is now handled on the x86/SunOS
526 platform. (thanks to Daisuke Homma)
527 * bug fix: more accurate ROOM results on GENCGC platforms
528 * optimization: improved type inference for arithmetic-for
529 index variables in LOOP
530 * optimization: faster floating-point SQRT on x86-64
531 * fixed some bugs revealed by Paul Dietz' test suite:
532 ** DOCUMENTATION returns NIL instead of "" for method combinations
533 that don't have a docstring
535 changes in sbcl-0.9.7 relative to sbcl-0.9.6:
536 * minor incompatible change: (SETF CLASS-NAME) and (SETF
537 GENERIC-FUNCTION-NAME) are no longer generic functions, and
538 therefore are not customizeable by user code (as seems to be at
539 least permitted and maybe required by AMOP). As a consolation,
540 however, the SBCL implementation of these functions now calls
541 REINITIALIZE-INSTANCE as specified by AMOP.
542 * bug fix: slot-definition documentation is propagated as per ANSI
543 7.6.2 to EFFECTIVE-SLOT-DEFINITIONS.
544 COMPUTE-EFFECTIVE-SLOT-DEFINITION now receives a :DOCUMENTATION
545 argument, as do eslotd initialization methods. (from Pascal
546 Costanza's "Closer" project)
547 * bug fix: REINITIALIZE-INSTANCE on generic functions calls
548 COMPUTE-DISCRIMINATING-FUNCTION (almost) unconditionally, as
550 * bug fix: it is now possible to have more than one subclass of
551 STANDARD-GENERIC-FUNCTION without causing stack overflow.
552 (reported by Bruno Haible, Pascal Costanza and others)
553 * bug fix: the dependent update protocol now works for generic
554 functions. (thanks to Gerd Moellmann; reported by Bruno Haible
556 * bug fix: condition-class instances corresponding to
557 DEFINE-CONDITION forms are now created eagerly. (reported by
558 Kalle Olavi Niemitalo on comp.lang.lisp)
559 * bug fix: floating point printing is more accurate in some
560 circumstances. (thanks to Simon Alexander)
561 * bug fix: *COMPILE-FILE-PATHNAME* now contains the user's pathname
562 merged with *DEFAULT-PATHNAME-DEFAULTS*.
563 * bug fix: callbacks on OS X now preserve stack-alignment.
564 (thanks to Cyrus Harmon)
565 * enhancement: the x86-64 disassembler is much better at
566 disassembling SSE instructions. (thanks to Lutz Euler)
567 * enhancement: CHECK-TYPE on a variable now allows type-inference
568 (thanks to Vincent Arkesteijn)
569 * optimization: improved performance of EUC-JP external format.
570 (thanks to NIIMI Satoshi)
571 * optimization: performance improvements to IO on file streams of
572 :ELEMENT-TYPE CHARACTER
573 * optimization: much faster memory allocation on x86-64
574 * optimization: faster garbage collections (latency and throughput)
576 * optimization: faster bignum subtraction and division on x86 and x86-64
577 (thanks to Lutz Euler)
578 * optimization: more accurate type-inference for loops that use a
579 floating point index variable or a negative step.
581 changes in sbcl-0.9.6 relative to sbcl-0.9.5:
582 * bug fix: add a workaround to SBCL looping infinitely at startup on
583 Linux kernels with apparently buggy implementations of personality().
584 (thanks to Svein Ove Aas)
585 * bug fix: Unicode symbols are correctly printed in LDB backtraces
586 (thanks to David Lichteblau)
587 * bug fix: local bindings shadow global symbol macros for
588 macroexpansion. (reported by Matthew D Swank on comp.lang.lisp)
589 * optimization: non-open coded uses of numeric comparison operators
590 (e.g. >) no longer cons when called with more than one parameter
591 on platforms supporting dynamic-extent allocation.
592 * enhancement: saving cores with foreign code loaded is now supported
593 on MIPS/Linux in addition to the previously supported platforms.
594 * bug fix: FIND-RESTART now tests for activity, not applicability when given
595 a restart object as identifier. (reported by Helmut Eller for CMUCL)
596 * bug fix: division by zero in sb-sprof when no samples were collected
597 * bug fix: a race when a slow to arrive sigprof signal killed sbcl
598 * bug fix: asdf-install uses CRLF as required by the HTTP spec.
599 (thanks to Alexander Kjeldaas)
600 * new feature: ignoring the return values of destructive functions
601 like NREVERSE signals a compile-time style-warning.
602 (thanks to Kevin Reid)
603 * new feature: the alignment of alien structure fields can be
604 explicitly specified. (thanks to Cyrus Harmon)
605 * bug fix: run cleanup forms (in all threads) when receiving a SIGTERM
606 and dump core on SIGQUIT
608 ** incompatible change: threads do not inherit values of specials
609 from their parents (see manual)
610 ** bug fix: threads stacks belonging to dead threads are freed by the
611 next exiting thread, no need to gc to collect thread stacks anymore
612 ** minor incompatible change: INTERRUPT-THREAD-ERROR-ERRNO removed
613 ** WITH-RECURSIVE-LOCK can be nested in a WITH-MUTEX for the same lock
614 ** bug fix: dynamic variable and thread start related gc lossage
615 ** bug fix: job control (SIGSTOP/SIGCONT) no longer confuses threads
617 * fixed some bugs revealed by Paul Dietz' test suite:
618 ** SUBTYPEP is slightly more accurate on heinously complicated
619 CONS types where some of the members have uncertain (in the
620 NIL, NIL sense) type relationships to each other.
622 ** Cores produced by SAVE-LISP-AND-DIE on GENCGC platforms are
623 no longer purified unless :PURIFY T is explicitly specified.
624 ** Non-purified cores are significantly smaller than before
626 changes in sbcl-0.9.5 relative to sbcl-0.9.4:
627 * new feature: timers based on Zach Beane's excellent timer package
628 * added support for the following external formats: koi8-u,
629 x-mac-cyrillic, cp437, cp850, cp852, cp855, cp857, cp860, cp861,
630 cp862, cp863, cp864, cp865, cp866, cp869, cp874, iso-8859-2,
631 iso-8859-3, iso-8859-4, iso-8859-5, iso-8859-6, iso-8859-7,
632 iso-8859-8, iso-8859-9, iso-8859-10, iso-8859-11, iso-8859-13,
633 iso-8859-14, cp1250, cp1251, cp1252, cp1253, cp1254,
634 cp1255,cp1256, cp1257, cp1258 (contributed by Ivan Boldyrev)
635 * incompatible change: a threaded SBCL will no longer revert to
636 non-threaded mode on non-NPTL systems, but refuse to start entirely.
637 * bug fix: interrupts are disabled until startup is complete; no
638 more sigsegvs when receiving a signal to soon
639 * optimization: faster 32-bit SB-ROTATE-BYTE:ROTATE-BYTE on non-x86/ppc
641 * bug fix: add a workaround for the memory randomization features in
642 Linux kernels >= 2.6.12 that interfere with SBCL's memory maps. This
643 workaround will only be in effect on systems with the proc filesystem
645 * bug fix: printing objects of type HASH-TABLE signals a
646 PRINT-NOT-READABLE error when *READ-EVAL* is NIL. (reported by
648 * bug fix: GET-INTERNAL-REAL-TIME now works even for processes that
649 have been running for over 50 days. (reported by Gilbert Baumann)
650 * bug fix: the logic for getting names of functions gets less
651 confused when confronded with alternate-metaclass
652 funcallable-instances. (reported by Cyrus Harmon)
653 * bug fix: FUNCTIONP and (LAMBDA (X) (TYPEP X 'FUNCTION)) are now
654 consistent, even on internal alternate-metaclass objects.
655 * bug fix: flush closure information collected by physical
656 environment analysis prepass before the main pass. (bug reported
658 * bug fix: compiler pack phase does not modify a hashtable, which is
659 iterated. (reported by Bryan O'Connor, fixed by Rob MacLachlan)
660 * bug fix: backquote does not optimize (LIST* x y) to CONS when x
661 may be expanded. (reported by Alexander <malishev> on c.l.l)
662 * bug fix: no more style-warnings when compiling code using LAST
663 under high-SPEED low-SPACE settings. (reported by David Wallin
665 * fixed some incompatibilities between SBCL's MOP and the MOP
667 ** the METAOBJECT class is now implemented;
668 ** FUNCALLABLE-STANDARD-OBJECT is now a subclass of
669 STANDARD-OBJECT, as required;
670 ** the classes STANDARD-CLASS and FUNCALLABLE-STANDARD-CLASS are
671 now compatible (as required by VALIDATE-SUPERCLASS); there
672 remains a consistency requirement over the presence or absence
673 of the FUNCTION class in the superclass list of finalized
674 classes; see the manual for more details;
675 ** the :AROUND method for COMPUTE-SLOTS on
676 FUNCALLABLE-STANDARD-CLASS now honours the primary method's
677 requested slot ordering.
679 ** bug fix: parent thread now can be gc'ed even with a live
681 ** bug fix: binding a special with PROGV to no value is not
682 the same as that symbol not having been bound (thanks to
684 ** bug fix: binding specials is thread safe (thanks to
686 ** bug fix: interrupt handlers are now per-process, RUN-PROGRAM
687 and SB-SPROF do not die with 'no handler for signal XX in
688 interrupt_handle_now(..)' anymore
689 ** bug fix: WITH-TIMEOUT works with multiple running threads
690 * fixed some bugs revealed by Paul Dietz' test suite:
691 ** ENSURE-GENERIC-FUNCTION should take a method class object for
692 the :method-class keyword argument.
694 changes in sbcl-0.9.4 relative to sbcl-0.9.3:
695 * new port: the Solaris operating system on x86 processors is now
696 mostly supported, though some rough edges in the environment
697 remain. (thanks to Daisuke Homma)
698 * enhancement: SBCL on MIPS platforms now has a much larger dynamic
699 space for its heap. (thanks to Thiemo Seufer)
700 * optimization: SBCL on MIPS platforms now supports dynamic-extent
701 closures. (thanks to Thiemo Seufer)
702 * minor incompatible change: eof selects abort in the debugger.
703 * minor incompatible change: *INVOKE-DEBUGGER-HOOK* is run before
704 *DEBUGGER-HOOK* => *DEBUGGER-HOOK* is not run when the debugger
706 * minor incompatible change: SB-KERNEL:INSTANCE-LAMBDA is
707 deprecated, and will go away in a future revision of SBCL.
708 * minor incompatible change: GC-ON and GC-OFF are no longer
709 implemented with a counter, it does not matter how many times gc
710 is switched on or off
711 * bug fix: discriminating functions for generic function classes
712 with non-standard methods for COMPUTE-APPLICABLE-METHODS no longer
713 make invalid assumptions about method precedence order. (reported
715 * bug fix: TRUNCATE now correctly signals division by zero on MIPS
716 platforms. (thanks to Thiemo Seufer)
717 * bug fix: degree sign (<U00B0>) could not be encoded in KOI8-R.
718 * bug fix: correct pathname printing with printer escaping is on.
719 (thanks to Kevin Reid)
720 * bug fix: complex VOP definitions in "user-space" no longer trigger
721 package locks. (reported by Zach Beane)
722 * fixed bug 343: SB-KERNEL:INSTANCE-LAMBDA is no longer necessary
723 for funcallable-instance functions, and is no different from
725 * bug fix: PARSE-INTEGER no longer depends on the whitespaceness of
726 characters in the current readtable. (reported by Nicholas Neuss)
727 * bug fix: SUBTYPEP on various CONS types returns more a more
728 accurate acknowledgment of its certainty.
729 * optimizations: REMOVE-DUPLICATES now runs in linear time on
730 lists in some cases. This partially fixes bug 384.
731 * flush all standard streams before prompting in the REPL and the
733 * bug fix: signal handling and triggering gc do not conflict
734 directly anymore, in particular a high frequency sb-sprof does
735 not prevent gc from running
736 * bug fix: DECODE-UNIVERSAL-TIME now uses a more reasonable
737 approximation for timezone and DST information between the
738 universal time epoch and the smallest negative 32-bit time_t.
739 * bug fix: ENCODE-UNIVERSAL-TIME no longer errors when passed the
740 year 1899 so long as the encoded time is non-negative.
741 * bug fix: on the x86 platform, SB-ROTATE-BYTE:ROTATE-BYTE returns
742 the correct answer for non-constant rotate amounts when performing
743 an inline 32-bit rotation.
745 ** bug fix: RELEASE-FOREGROUND doesn't choke on session lock if
746 there is only one thread in the session
747 ** bug fix: memory leak for streams created in one thread and
748 written to in another
749 ** bug fix: lockup when compiled with gcc4
750 ** bug fix: race that allows the gc to be triggered when gc is
752 ** bug fix: one less memory fault in INTERRUPT-THREAD, again
753 ** bug fix: gc and INTERRUPT-THREAD don't hang when the RT signal
755 ** bug fix: finished threads are gc'ed properly
756 * fixed some bugs revealed by Paul Dietz' test suite:
757 ** CALL-NEXT-METHOD signals an error (in safe code) when the call
758 has arguments with a different set of applicable methods from
759 the orignal arguments.
760 ** The type error thrown by MAP now has a correct expected-type
762 ** DISASSEMBLE now throws a TYPE-ERROR when its argument does not
763 name a compiled function.
764 ** Three MISC tests where a large bignum was improperly coerced to
765 a float that couldn't represent that bignum during type
766 derivation were fixed.
767 ** SUBTYPEP can now handle types involving the negation of a
768 list-form FUNCTION type.
769 ** SUBTYPEP also now handles certain COMPLEX type specifiers such
770 as (COMPLEX (AND RATIO (NOT FIXNUM))).
771 ** READ-BYTE and WRITE-BYTE no longer take stream designators.
773 changes in sbcl-0.9.3 relative to sbcl-0.9.2:
774 * New feature: Experimental support for bivalent streams: streams
775 opened with :element-type :default now allow character and binary
776 (unsigned-byte 8) I/O
777 * Support for the koi8-r external format. (thanks to Ivan Boldyrev)
778 * Bug fix: OPEN no longer fails when *PRINT-READABLY* is T. (thanks
780 * bug fix: no more highly sporadic "couldn't check whether ~S is
781 readable" when reading a stream and an interrupt hits in the middle
782 of a select system call
783 * compiler better recognizes complex arrays (reported by Eduardo
785 * bug fix: out-of-line SB-SYS:FOREIGN-SYMBOL-ADDRESS did not work
786 for variables on SBCL built with linkage-tables. (reported by Luis
788 * various error reporting improvements.
789 * optimizations: LOGNOR on fixnums is improved in the MIPS backend.
790 (Thanks to Thiemo Seufer)
791 * bug fix: nested reader invokations work correctly
792 * bug fix: it is possible to have simultaneous references to foreign
793 code and foreign data with the same name.
795 ** added x86-64 support
796 ** incompatible change: the threading api now works with thread
797 objects instead of thread ids
798 ** bug fix: threads are protected from signals and interruption when
799 starting up or going down
800 ** bug fix: a race where an exiting thread could lose its stack to gc
801 ** bug fix: don't halt on infinite error in threads if possible
802 ** fixed numerous gc deadlocks introduced in the pthread merge
803 ** bug fix: fixed thread safety issues in read and print
804 ** bug fix: debugger doesn't hang on session lock if interrupted at
805 an inappropriate moment
806 ** bug fix: run-program is now thread safe(r)
807 ** bug fix: inner with-recursive-lock no longer releases the mutex
808 * fixed a bug in (DECODE-UNIVERSAL-TIME 0) (reported by Paul Dietz)
809 * fixed some bugs revealed by Paul Dietz' test suite:
810 ** TYPE-ERRORs from signalled by COERCE now have DATUM and
811 EXPECTED-TYPE slots filled.
812 ** MULTIPLE-VALUE-SETQ always returns the primary value of the
814 ** MAKE-CONDITION accepts classes as type-designators.
815 ** COMPILE may never return NIL.
816 ** ENCODE-UNIVERSAL-TIME now guards against times out of Unix's
817 range before calling Unix time functions
819 changes in sbcl-0.9.2 relative to sbcl-0.9.1:
820 * numerous signal handling fixes to increase stability
821 * Support for EUC-JP external format. (thanks to NIIMI Satoshi)
822 * minor incompatible change: we now correctly canonize default
823 initargs, making them be a list of (INITARG INITFORM INITFUNCTION)
824 as per the MOP, rather than the historical (INITARG INITFUNCTION
825 INITFORM). (reported by Bruno Haible)
826 * new feature: WITH-COMPILATION-UNIT now accepts a non-standard
827 :SOURCE-PLIST option. See (DOCUMENTATION #'WITH-COMPILATION-UNIT T)
828 for more information.
829 * TRUENAME and PROBE-FILE now correctly resolve symlinks even if the
830 pathname is a directory pathname.
831 * SB-SPROF now works (more) reliably on non-GENCGC platforms.
832 * dynamic space size on PPC has been increased to 768Mb. (thanks to
834 * SB-MOP:ENSURE-CLASS-USING-CLASS now accepts a class as the
835 :METACLASS argument in addition to a class name. (reported by
836 Bruno Haible for CMUCL, patch for CMUCL by Gerd Moellmann)
837 * RESTART-CASE can now be wrapped around CALL-METHOD forms.
838 (reported by Bruno Haible; patch from Gerd Moellmann)
839 * bug fix: sbcl runtime can now be compiled with gcc4 (thanks to
841 * bug fix: more cleanups to the floating point exception handling on
842 x86-64 (thanks to James Knight)
843 * bug fix: the compiler does not try to constant fold calls of
844 COERCE and BIT-* functions when they return freshly constructed
845 objects. (reported by Nikodemus Siivola and Paul Dietz)
846 * optimization: improved the MIPS versions of generic (in the
847 generic sense) arithmetic routines. (thanks to Thiemo Seufer)
848 * optimization: direct conversion of (unsigned-byte 32) to floats on
849 the PowerPC platform.
850 * optimization: structure instances with raw slots now use less
851 memory, and probably show better memory locality. (thanks to
853 * optimization: DYNAMIC-EXTENT declarations for lists and closures
854 are treated as requests for stack allocation on the x86-64,
855 Alpha-32, PPC and SPARC platforms.
856 * contrib improvement: it's harder to cause SOCKET-CLOSE to close()
857 the wrong file descriptor; implementation of SOCKET-OPEN-P.
858 (thanks to Tony Martinez)
860 ** gcing a dead thread can no longer lead to lockups
861 ** threads block signals until they are set up properly
862 ** errno is no longer shared by threads
863 ** interrupt-thread restores the eflags register on x86
864 ** fixed some lockups due to gc/thread interaction
865 * fixed some bugs revealed by Paul Dietz' test suite:
866 ** invalid dotted lists no longer raise a read error when
868 ** signal an error if a symbol that names a declaration is used
869 as the name of a type, or vice versa
870 ** allow using the (declare (typespec var*)) abbreviation for
871 (declare (type typespec var*)) with all type specifiers
872 ** circularity detection works properly with PPRINT-LOGICAL-BLOCK
873 ** always return NIL from PPRINT-POP when OBJECT is NIL
874 ** don't signal errors when pretty-printing malformed LABELS,
875 FLET or MACROLET forms
876 ** declarations in a DOLIST body are also in scope for the
878 ** COMPILE-FILE accepts all pathname designators as INPUT-FILE
880 ** the ELEMENT-TYPE keyword argument to WITH-OUTPUT-STREAM is
883 changes in sbcl-0.9.1 relative to sbcl-0.9.0:
884 * fixed cross-compiler leakages that prevented building a 32-bit
885 target with a 64-bit host compiler.
886 * fixed a bug in CLOSE :ABORT T: no longer attempts to remove files
887 opened with :IF-EXISTS :OVERWRITE.
888 * fixed bug 281: error for an invalid qualifier in a short-form method
889 combination method is not signalled until the faulty method is called.
890 * bug fix: iteration variable type inferrer failed to deal with open
891 intervals. (reported by Alan Shields)
892 * bug fix: dynamically loading (via LOAD-SHARED-OBJECT or similar)
893 "frameworks" on Mac OS X no longer causes an EXC_BAD_ACCESS if two
894 or more runtime options were provided to the sbcl binary.
895 * compiled code is not steppable if COMPILATION-SPEED >= DEBUG.
896 * contrib improvement: implement SB-POSIX:MKSTEMP (Yannick Gingras)
897 * optimization: there's now a fast-path for fixnum arguments in the
898 generic subtraction routines on x86/x86-64. (Thanks to Lutz Euler)
899 * optimization: the code generated on x86-64 is more compact thanks
900 to not outputting unneccessary prefix bytes. (Thanks to Lutz Euler)
901 * bug fix: floating-point exception handling now partly works on
902 x86-64. (Thanks to James Knight)
903 * improvement to the MIPS backend from Thiemo Seufer: C-style
904 64-bit long long arguments and return values to alien functions
906 * fixed some bugs revealed by Paul Dietz' test suite:
907 ** the type-error signalled from WARN has a filled-in DATUM slot.
908 ** the type-error required when a stream is not associated with
909 a file has the stream as its datum.
910 ** type-errors on single-floats on x86-64 no longer have
911 :INVALID-OBJECT as the datum
912 ** the type-errors signalled for invalid function names now have
913 a correct expected type
914 ** (SETF (DOCUMENTATION ... 'STRUCTURE)) no longer signals an error
915 for structures defined with a :TYPE. Documentation strings for
916 typed structures are no longer immediately discarded
917 ** FILE-STRING-LENGTH and STREAM-EXTERNAL-FORMAT now work on
918 broadcast streams and synonym streams. FILE-LENGTH now also works
919 on broadcast streams.
921 changes in sbcl-0.9.0 relative to sbcl-0.8.21:
922 * incompatible change: the --noprogrammer option, deprecated since
923 version 0.7.5, has been removed. Please use the equivalent
924 --disable-debugger option instead.
925 * incompatible change: finalizers and *AFTER-GC-HOOKS* are now run with
927 * incompatible change: support for *BEFORE-GC-HOOKS* (that have been
928 inoperational for a while now) has been completely removed.
929 * null lexical environments are now printed as #<NULL-LEXENV>,
930 significantly reducing the amount of clutter in typical backtraces.
931 * documentation on weak pointers, finalization, and after GC hooks
932 has been added to the manual.
933 * optimization: REPLACE on declared (UNSIGNED-BYTE 8) vectors, as well
934 as other specialized array types, is much faster. SUBSEQ and
935 COPY-SEQ on such arrays have also been sped up.
936 * optimization: EQL is now more efficient when at least other argument
937 is known to be of type (OR FIXNUM (NOT NUMBER)).
938 * fixed bug: the runtime is now less vulnerable to changes in the
939 size of the SBCL object on OS X, and virtual memory is reserved for
940 all spaces that need to be at a fixed address.
941 * fixed bug: finalizers are now thread-safe. (thanks to Gabor Mellis)
942 * fixed bug: finalizers and after GC hooks that cause consing are now
944 * fixed bug: compiler error messages and summaries are now printed to
945 *ERROR-OUTPUT*, not *STANDARD-OUTPUT*.
946 * fixed inference of the upper bound of an iteration variable.
947 (reported by Rajat Datta).
948 * fixed bug 211e: calling local functions with duplicated constant
949 keyword argument no longer causes a bogus style warning about an
951 * fixed bug 305: INLINE/NOTINLINE declaration no longer causes local
952 ftype declaration to be disregarded. (reported by Dave Roberts)
953 * fixed bug 373: caused by erronous compilation of references to alien
954 variables in the runtime on ppc/darwin.
955 * fixed bug 376: CONJUGATE type deriver.
956 * fixed infinite looping of ALIEN-FUNCALL, compiled with high DEBUG.
957 (reported by Baughn on #lisp)
958 * a cross-compiler bug on non-x86 platforms has been identified and
959 fixed. (thanks to Bruno Haible)
960 * improvements to the MIPS runtime code for increased stability.
961 (thanks to Thiemo Seufer)
962 * increased the maximimum compact environment size to allow
963 purify on images with large amounts of functions. (thanks to Cyrus Harmon)
964 * partial workaround for bug 135: don't name the function we're
965 calling for hairy cases of EVAL, so as not to accumulate one environment
966 entry per call to EVAL. (reported by Kevin Reid)
967 * improvements to the x86-64 disassembler. (thanks to Lutz Euler)
968 * optimization: type testing for non-vector arrays should be faster.
969 * fixed TRACE :ENCAPSULATE NIL, added support for :ENCAPSULATE NIL
971 * bug fix: setting 31st element of a bit vector to zero did not work
973 * bug fix: redefining a class definition which failed due to a
974 previous accessor / function clash now works (but see BUGS entry
975 #380 for more problems in this area). (thanks to Zach Beane)
976 * the long form of DEFINE-METHOD-COMBINATION disables method group
977 checking when given a single method group with pattern *. (thanks
979 * on x86 compiler supports stack allocation of results of simple
980 calls of MAKE-ARRAY, bound to variables, declared DYNAMIC-EXTENT.
981 * support for building and running on Mac OS X 10.4 "Tiger" has been added
982 ** Binaries built on Tiger will not run on 10.2 "Jaguar" currently
983 * fixed some bugs related to Unicode integration:
984 ** the restarts for recovering from input and output encoding
985 errors only appear when there is in fact such an error to
987 * fixed some bugs revealed by Paul Dietz' test suite:
988 ** MISC.549 and similar: late transformation of unsafe type
989 assertions into derived types caused unexpected code
991 ** SCALE-FLOAT type deriver is less wrong.
992 ** type derivers for EXP, LOG and similar functions compute result
993 types for complex arguments better.
994 ** (MISC.563) CONJUGATE type deriver works for very restricted
996 ** out-of-line type testers for character strings are available.
997 ** EQUAL compiler transform understands specialness of objects
999 ** accessing double-floats stored on the stack now works on x86-64.
1000 ** debugger internals could sometimes create invalid lispobjs,
1001 resulting in GC crashes.
1002 ** MISC.548: type check weakening can convert required type into
1004 ** initialization forms for bindings are not in scope of free special
1007 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
1008 * incompatible change: thread support for non-NPTL systems has
1009 been removed - locking is buggy and unreliable. A threaded
1010 SBCL build will now warn at startup and refuse to create
1011 new threads, unless futex support is detected in the kernel
1012 * incompatible change: the top level REPL now has only an ABORT
1013 restart associated with it, not TOPLEVEL and ABORT as it used to.
1014 TOP and TOPLEVEL are now available as debugger commands for
1015 returning to the top level.
1016 * incompatible change: forms evaluated in the REPL now use the
1017 global optimization policy.
1018 * incompatible change: user- and system-initialization files are
1019 no longer processed with LOAD, but by READ and EVAL; hence the
1020 global optimization policy, startup package, readtable, etc,
1022 * The .fasl file format number has been incremented because of
1023 various incompatible changes.
1024 * internal entry point details and argument counts no longer appear
1025 in backtraces unless explicitly requested by setting
1026 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
1027 * built-in and standard functions no longer have names like "top
1028 level local call to FOO".
1029 * fixed bug 32: functions defined in non-null lexical environments
1030 now have more legible printed representation
1031 * fixed bug 33: functions defined in non-null lexical environemnts
1032 are now more amenable to inspection by INSPECT.
1033 * workaround for bug 354: XEPs no longer appear in backtraces unless
1034 explicitly requested.
1035 * fixed bug: receiving the signal which results from attempting to
1036 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
1037 SIGBUS on other *BSDs) on architectures where the C stack is also
1038 the Lisp stack (x86 and x86-64) from foreign code no longer leads
1039 to debugger confusion or wild instability. (reported by Cheuksan
1041 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
1042 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
1043 (reported by Lutz Euler)
1044 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
1045 compiled code. (reported by Paul Dietz)
1046 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
1047 specialized parameter to a method to something that is not TYPEP
1048 the specializer is now possible.
1049 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
1050 face of package deletion.
1051 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
1052 pathname. (reported by David Tolpin on c.l.l)
1053 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
1054 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
1055 STRING-STREAM and FILE-STREAM, respectively.
1056 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
1057 than previously; in addition, its test suite is now run on build.
1058 (thanks to Luke Gorrie)
1059 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
1060 * optimization: added a immediate representation for single-floats
1062 * fixed some bugs revealed by Paul Dietz' test suite:
1063 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
1064 ** attempting to create a package with a colliding nickname causes
1065 correctable errors to be signalled.
1066 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
1067 ** several x86-64 backend bugs related to sign-extension of immediate
1070 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
1071 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
1072 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
1074 * fixed loading of multiply forward-referenced layouts.
1075 (thanks to Cheuksan Wang)
1076 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
1077 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
1078 (see COMPILE-FILE documentation for details of :PRINT option)
1079 * fixed bugs 19 and 317: fixed-format floating point printing is
1080 more accurate. This also fixes a bug reported by Adam Warner
1081 related to the ~@F format directive.
1082 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
1084 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
1085 dispatch table if the from-char is a dispatch macro character.
1086 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
1087 by the wordsize no longer ignore the last word. (reported by Lutz
1089 * fixed bug in type checking of dynamic-extent variables. (reported
1091 * optimization: sequence traversal functions use their freedom to
1092 coerce function designators to functions.
1093 * optimization: code with many calls to CLOS methods specialized on
1094 CLOS classes has had redundant type checks removed.
1095 * optimization: added declarations to speed up operations that access
1096 the internal character database (for example STRING-UPCASE)
1097 * optimization: comparison operations between floats and sufficiently small
1098 fixnums no longer create extra rationals
1099 * fixed some bugs related to Unicode integration:
1100 ** portions of multibyte characters at the end of buffers for
1101 character-based file input are correctly transferred to the
1102 start of the buffer at the next read.
1103 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
1104 passing it through to OPEN.
1105 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
1106 argument given to internal calls to OPEN.
1107 ** the built-in comment readers (introduced by character sequences
1108 ";" and "#|") are more forgiving to encoding errors; they will
1109 STYLE-WARN and then attempt to resync the stream at a character
1110 boundary. (thanks to Teemu Kalvas)
1111 * fixed some bugs in the x86-64 port:
1112 ** Negative short int return values from c-calls are sign-extended
1114 ** The stack is aligned to 16-bytes for c-calls, as required by
1115 the ABI. (thanks to Cheuksan Wang)
1116 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
1117 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
1118 for enums. (thanks to Vincent Arkesteijn)
1119 ** Multiple small optimizations and bugfixes for floating point
1121 * fixed some bugs revealed by Paul Dietz' test suite:
1122 ** Space, Tab, Linefeed, Return and Page have the invalid
1123 secondary constituent character trait.
1124 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
1126 ** WITH-INPUT-FROM-STRING should only update the index place on
1128 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
1129 works more reliably.
1130 ** Bit-array operations (BIT-AND and similar) worked incorrectly
1131 with one-dimensional arrays with fill pointers.
1132 ** TYPE-OF failed on a complex with an integer realpart and a
1134 ** compiler failure during type inference for the code of form
1135 (IF (EQL X (THE ...)) ...) (MISC.535).
1137 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
1138 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
1139 platform. The port supports 61-bit fixnums, large memory spaces
1140 and reloading shared object files.
1141 * enhancement: saving cores with foreign code loaded is now
1142 supported on ppc/Darwin in addition to the previously supported
1144 * enhancement: the statistical profiler now walks deeper into the
1145 call stack for more meaningful call-graphs and accrued time
1146 reports (x86/x86-64 only). It also now reports time spent in
1148 * enhancement: it is now possible to trace most individual methods
1149 of a generic function in addition to tracing the generic function
1151 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
1153 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
1154 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
1155 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
1156 produces an error. (thanks to Vincent Arkesteijn)
1157 * bug fix: NAMESTRING on pathnames with :WILD components in their
1158 directories works correctly. (thanks to Artem V. Andreev)
1159 * fixed bug 125: compiler preserves identity of closures. (reported
1161 * bug fixed: functions with &REST arguments sometimes failed with
1162 "Undefined function" when compiled with (DEBUG 3). (reported by
1164 * bug fix: overflow during compiling of setting element of a bit
1165 vector with constant index and value. (reported by Timmy Douglas)
1166 * build fix: fixed the dependence on *LOAD-PATHNAME* and
1167 *COMPILE-FILE-PATHNAME* being absolute pathnames.
1168 * on x86 compiler partially supports stack allocation of dynamic-extent
1170 * GO and RETURN-FROM do not check the extent of their exit points
1171 when compiled with SAFETY 0.
1172 * fixed some bugs related to Unicode integration:
1173 ** encoding and decoding errors are now much more robustly
1174 handled; it should now be possible to recover even from invalid
1175 input or output to the terminal. (thanks to Teemu Kalvas)
1176 ** provided a first cut at implementing STRING-TO-OCTETS and
1177 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
1178 ** altered the SB-MD5 contributed module slightly, changing the
1179 interface just enough for it to be supportable for builds where
1180 lisp characters are not eight bits.
1181 * fixed some bugs revealed by Paul Dietz' test suite:
1182 ** the FORMATTER-generated functions for ~V[ conditionals require
1183 the correct number of arguments.
1184 ** READ-FROM-STRING returns the mandated second value when applied
1185 to displaced strings.
1186 ** the #\Rubout and #\Backspace characters are treated as invalid
1187 constituent characters by the tokenizer.
1189 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
1190 * new feature: reloading changed shared object files with
1191 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
1192 * new feature: references to foreign variables and functions
1193 can now be compiled and loaded before the corresponding shared
1194 object file is loaded, as long as the foreign definitions are
1195 available at runtime.
1196 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
1197 supported. (thanks to Dan Debertin)
1198 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
1199 just keywords. (thanks to Vincent Arkesteijn)
1200 * fixed bug #331: structure-class instances corresponding to
1201 DEFSTRUCT forms are now created eagerly.
1202 * fixed bug #345: backtraces from calls to undefined functions work
1203 on x86 as well. Related bug #61 is now also partially fixed on x86
1204 (backtraces from throws to unknown catch tags.)
1205 * bug fix: lambda-list parsing is now stricter vrt. order and number
1206 of lambda-list keywords.
1207 * bug fix: as specified by AMOP, an error is signalled if a
1208 class-option appears multiple times in a DEFCLASS form. (reported
1210 * bug fix: RANDOM can be compiled when the compiler derives the type
1211 of its numeric argument as a disjoint set of small integers.
1212 (reported by Paul Dietz)
1213 * bug fix: starting a core saved with shared objects loaded when
1214 those objects are not available no longer causes threaded SBCL to
1215 hang. (reported by Sean Ross)
1216 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
1218 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
1219 argument, which must always be NIL. (reported by Kalle Niemitalo)
1220 * bug fix: printing 1.0d+23 no longer results in an error.
1221 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
1222 * bug fix: structure slot setters preserve evaluation order. (thanks
1224 * fixed some bugs related to Unicode integration:
1225 ** RUN-PROGRAM can allow its child to take input from a Lisp
1226 stream. (reported by Stefan Scholl)
1227 ** ASDF-INSTALL successfully downloads .tar.gz files in all
1228 locales. (reported by Ken Causey)
1229 * fixed some bugs revealed by Paul Dietz' test suite:
1230 ** INCF, DECF and REMF evaluate their place form as specified in
1232 ** FORMATTER expands ~{ ~} iteration directives with V or #
1233 parameters correctly.
1234 ** FORMATTER deals with the ~@[ ~] conditional directive where the
1235 consequent uses no arguments correctly.
1236 ** the system has a partial understanding of the (COMPLEX RATIO)
1238 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
1241 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
1242 * new feature: a build-time option (controlled by the :SB-UNICODE
1243 keyword feature, enabled by default) for building the system with
1244 support for the entire 21-bit character space defined by the
1246 * new feature: the system now has rudimentary external-format
1247 support; the primary user-visible change at this time is that
1248 characters with the high bit set (such as lower-case-e-acute) will
1249 print correctly to a terminal in a UTF-8 environment.
1250 * minor incompatible change: BASE-CHAR no longer names a class;
1251 however, CHARACTER continues to do so, as required by ANSI.
1252 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
1253 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
1254 has been moved to the SB-EXT package (temporarily re-exported from
1256 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
1257 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
1259 * fixed bug #351: better error-handlind and reporting for malformed
1261 * fixed bug #350: bignum-printing is now more memory-efficient,
1262 allowing printing of very large bignums, eg. (expt 2 10000000).
1263 (reported by Bruno Haible)
1264 * fixed bug #302: better primitive-type selection for intersection
1266 * fixed bug #308: non-graphic characters now all have names, as
1267 required. (reported by Bruno Haible)
1268 * bug fix: redefining a class with different superclasses now correctly
1269 removes it from the direct-subclasses of its previous superclasses.
1270 (reported by David Morse)
1271 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
1272 new value now works. (reported by Bruno Haible)
1273 * bug fix: correct canonicalization of multiple non-standard slot
1274 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
1275 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
1276 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
1277 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
1278 now exists, an signals an error.
1279 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
1280 during macroexpansion for non-iteration variables as well. (reported
1281 by Bruno Haible for CMUCL)
1282 * bug fix: Cyclic structures and unprintable objects in compiler
1283 messages no longer cause errors. (reported by Bruno Haible)
1284 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
1285 and READ-FROM-STRING all now return a primary value of NIL if
1286 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
1287 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
1288 (reported by Bruno Haible for CMUCL)
1289 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
1290 do not designate a condition. (reported by Bruno Haible for
1292 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
1293 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
1294 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
1295 permitting resolution in favour of any of the conflicting symbols.
1296 (reported by Bruno Haible for CMUCL)
1297 * bug fix: EQUAL compiler optimizations is less aggressive on
1298 strings which can potentially compare true despite having distinct
1299 specialized array element types.
1300 * bug fix: unit enumerations can be defined without dividing by
1301 zero. (thanks to Vincent Arkesteijn)
1302 * FORMAT compile-time argument count checking has been enhanced.
1303 (report from Bruno Haible for CMUCL)
1304 * a partial workaround for the bug 262: the compiler does not try to
1305 inline-expand a local function doing RETURN-FROM from a deleted
1306 BLOCK. (thanks to Peter Denno for the bug report and to David
1307 Wragg for the simple test case)
1308 * fixed some bugs revealed by Paul Dietz' test suite:
1309 ** RENAME-PACKAGE allows all package designators as new package
1311 ** constraint propagation and lambda variable substitution are
1312 more cautious in dealing with partially deleted code.
1313 ** compiler sometimes lost reoptimization passes.
1314 ** CERROR, given a condition as condition designator, passes its
1315 remaining arguments to the continue format control without
1317 ** Case-altering FORMAT directives work correctly on non-ASCII
1319 ** The REAL type specifier handles bounds outside the floating
1320 point ranges without signalling FLOATING-POINT-OVERFLOW.
1321 ** Functions with IR1-transformations can create intercomponent
1322 references to global functions.
1323 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
1325 ** FORMAT ~R treats a nil value for its first parameter correctly.
1327 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
1328 * enhancement: saving cores with foreign code loaded is now
1329 supported on x86/NetBSD and sparc/Linux in addition to the previously
1330 supported platforms.
1331 * bug fix: on some platforms repeated installations caused multiple
1332 copies of HTML documentation to be installed -- should not happen
1333 any more. (reported by Stefan Scholl)
1334 * bug fix: parsing self-recursive alien record types multiple times
1335 no longer causes infinite recursion. (reported by Thomas F. Burdick,
1336 original patch by Helmut Eller for CMUCL)
1337 * bug fix: stack-exhaustion detection works now on NetBSD as well.
1338 (thanks to Richard Kreuter)
1339 * bug fix: defining classes whose accessors are methods on existing
1340 generic functions in other (locked) packages no longer signals
1341 bogus package lock violations. (reported by François-René Rideau)
1342 * bug fix: special variables as DEFMETHOD parameters no longer have
1343 associated bogus type declarations. (reported by David Wragg and
1345 * bug fix: read-write consistency on streams of element-type
1346 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
1347 * bug fix: redefiniton of the only method of a generic function with
1348 no DEFGENERIC no longer emits a full WARNING. In addition,
1349 redefinition of generic functions with no DEFGENERIC to an
1350 incompatible lambda list now signals an error. (thanks to Zach
1352 * bug fix: DEFGENERIC now works even when there's a function of the
1353 same name in an enclosing lexical environment. (thanks to Zach
1355 * fixed compiler failure, caused by instrumenting code during
1356 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
1357 * optimization: added loop analysis and improved register allocation
1358 * fixed some bugs revealed by Paul Dietz' test suite:
1359 ** POSITION on displaced vectors with non-zero displacement
1360 returns the right answer.
1361 ** (SIMPLE-STRING) is a valid type specifier for sequence
1363 ** *PRINT-LEVEL* handling for slotless structures is pedantically
1365 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
1366 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
1368 ** The justification version of the FORMAT ~< directive treats
1369 non-zero minpad parameter correctly.
1371 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
1372 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
1373 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
1374 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
1375 the supported interface.
1376 * new feature: Single-stepping of code compiled with DEBUG 2 or
1377 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
1378 * new feature: saving cores with foreign code loaded is now
1379 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
1380 Timothy Moore's work for CMUCL)
1381 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
1382 parameters to * instead of NIL if no initform is supplied.
1383 (reported by Johan Bockgaard)
1384 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
1385 correctly when FUNCALL appears as the car of the form. Note:
1386 despite this FUNCALL forms are not currently subject to
1387 compiler-macro expansion. (port of Raymond Toy's fix for the
1388 same from CMUCL, reported by Johan Bockgaard)
1389 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
1390 (thanks for Teemu Kalvas)
1391 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
1392 case instead of terminating the iteration (thanks for Julian
1393 Squires, Sean Champ and Raymond Toy)
1394 * bug fix: incorrect expansion of defgeneric that caused a style
1395 warning. (thanks for Zach Beane)
1396 * bug fix: slot accessor effective method computation works properly
1397 for classes with multiple non-standard applicable methods on
1398 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
1399 * on x86 compiler supports stack allocation of results of LIST and
1400 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
1401 CMUCL implementation by Gerd Moellmann)
1402 * fixed some bugs revealed by Paul Dietz' test suite:
1403 ** FORMAT strings with both the ~<~:;~> form of the justification
1404 directive and pretty-printing directives cause an error.
1406 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
1407 * incompatible change: the internal functions
1408 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
1409 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
1410 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
1411 instead of the old functions.
1412 * new feature: on platforms where "dladdr" is available foreign
1413 function names now appear in backtraces. (based on Helmut Eller's
1415 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
1416 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
1418 * documentation: ASDF manual is now distributed with SBCL.
1419 * bug fix: SBCL can now load its contributed modules with REQUIRE
1420 even if the system-provided entries have been removed from
1421 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
1423 * bug fix: backtraces involving undefined functions or assembly
1424 routines are more informative. (thanks to Brian Downing)
1425 * bug fix: mutually referent alien structures now work correctly.
1426 (reported by Rick Taube)
1427 * bug fix: structures defined by WITH-ALIEN can be referred to
1428 within other definitions in the same WITH-ALIEN.
1429 * bug fix: division operators (MOD, TRUNCATE and the like) with
1430 constant zero divisors and integer dividends no longer generate
1432 * bug fix: provide default methods for INPUT-STREAM-P and
1433 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
1434 * bug fix: improve the detection and resolution of MOP metacycles
1435 (where effective method computation depends on the generic function
1436 having its effective method computed). (reported by Bruno Haible)
1437 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
1438 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
1439 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
1440 * bug fix: pathnames with relative directory components can be
1441 represented relative to default pathnames.
1442 * optimization: in taking the GCD of bignums, reduce the two bignums
1443 to approximately the same size (using Euclid's algorithm) before
1444 applying the more sophisticated binary GCD. (thanks to Juho
1446 * optimization: COUNT on bitvectors now operates word-at-a-time.
1447 * optimization: ASH with a positive, but not necessarily constant,
1448 (leftwards) shift, when in a modular context, is compiled to a
1450 * fixed some bugs revealed by Paul Dietz' test suite:
1451 ** FORMAT variable parameters ("~V<char>") are defaulted properly
1452 if the corresponding argument is NIL.
1453 ** FORMAT directives accepting a minpad parameter treat negative
1455 ** literal commas as character parameters to FORMAT directives are
1457 ** literal spaces directly after ~<Newline> directives within a
1458 format-logical-block (~:< ~@:>) do not induce :FILL-style
1459 conditional newlines.
1460 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
1461 as specified: it no longer includes conditional newlines).
1462 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
1464 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
1465 :PER-LINE-PREFIX argument does not evaluate to a string.
1467 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
1468 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
1469 the manual for details; for now, package locks can be disabled by
1470 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
1471 if no major problems are found then it is likely that they will be
1472 compiled in unconditionally.
1473 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
1474 unsupported operators on all platforms. To load a shared library
1475 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
1476 object file, link it into a shared library outside of SBCL and
1477 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
1479 * bug workaround: ROOM T and the GC were not working together
1480 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
1481 reporting facility aren't preserved. That reporting has been
1482 disabled, so now until and unless someone figures out how to make it
1483 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
1484 * minor incompatible change: as threatened around sbcl-0.8.0, the
1485 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
1486 The symbols are also exported from SB-PCL for backwards
1487 compatibility, but more so than before SB-PCL should be treated as
1488 an implementation-internal package.
1489 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
1491 * the SB-SPROF contrib now works on (most) non-x86 architectures.
1492 It is known as of this release not to work on the Alpha, however.
1493 * fixed bug #167: errors signalled due to illegal syntax in method
1494 bodies are now more legible.
1495 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
1496 designators and can hence be used with TYPEP.
1497 * fixed bug #333: CHECK-TYPE now ensures that the type error
1498 signalled, if any, has the right object to be accessed by
1499 TYPE-ERROR-DATUM. (reported by Tony Martinez)
1500 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
1501 5.1.2.3 for multiple-value place subforms. (reported by Kalle
1503 * fixed bug #334: programmatic addition of slots using specialized
1504 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
1505 and :ALLOCATION :CLASS slots.
1506 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
1507 float exponents. (rereported by Peter Seibel)
1508 * fixed a bug: #\Space (and other whitespace characters) are no
1509 longer considered to be macro characters in standard syntax by
1510 GET-MACRO-CHARACTER.
1511 * fixed bug: initialization of condition class metaobjects no longer
1512 causes an instance of the condition to be created. (reported by
1514 * fixed bug: it is now possible to have slots such that
1515 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
1516 description is neither :INSTANCE nor :CLASS.
1517 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
1518 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
1519 SLOT-VALUE-USING-CLASS), and no longer causes errors with
1520 non-standard SLOT-DEFINITION-ALLOCATION values.
1521 * fixed bugs: various race conditions handling exiting threads.
1522 CL-PPCRE's thread torture test now passes.
1523 * fixed arguably-a-bug: GC time proportional to number of threads in
1524 system even when most of them are idle
1525 * optimization: improved performance of BIT and SBIT on bit-vectors.
1526 * .fasl file incompatibility: The fasl file version number has
1527 been incremented because of changes associated with package locks.
1529 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
1530 * minor incompatible change: the system no longer provides
1531 optimization hints (conditions which are TYPEP
1532 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
1533 mode; these hints are still emitted when higher SPEED optimization
1535 * new contrib module: a sampling profiler (profiling by statistical
1536 sampling, rather than by instrumenting functions) is available as
1537 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
1538 * the behaviour of the standard function ED is now customizeable by
1539 third parties through a hook variable: see ED's documentation
1540 string for information on the protocol.
1541 * the compiler no longer emits efficiency notes for (FUNCALL X)
1542 when the type of X is uncertain under default optimization
1544 * fixed bug 276: mutating a binding of a specialized parameter to a
1545 method to something that is not TYPEP the specializer is now
1547 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
1548 exhibit the required behaviour on the x86 platform. (thanks to
1549 Peter van Eynde, Eric Marsden and Bruno Haible)
1550 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
1551 even for difficult arguments. (reported by Peter Graves)
1552 * fixed bug 141a: the backquote printer now descends quoted
1554 * fixed another bug in backquote printing: no more destructive
1555 modification of the form's list structure. (reported by Brian
1557 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
1558 move between its address being taken and the call to
1559 interrupt_thread, fixing a crashing race condition.
1560 * the SB-POSIX contrib implementation has been adjusted so that it
1561 no longer exhibits ridiculously poor performance when constructing
1562 instances corresponding to C structs.
1564 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
1565 * minor incompatible change: the sb-grovel contrib now treats C
1566 structures as alien (in the sense of SB-ALIEN) objects rather than
1567 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
1568 has implications for memory management of client code
1569 (sb-grovel-returned objects must now be manually managed) and for
1570 type safety (alien objects now have full types).
1571 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
1572 used to control emission of compiler diagnostics, rather than the
1573 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
1574 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
1575 quality should be considered deprecated.
1576 * install.sh now installs the user manual as well
1577 * (not quite a new documentable feature, but worth considering in
1578 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
1579 beginnings of a semantically meaningful condition hierarchy is
1580 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
1582 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
1583 designator as the defaults argument.
1584 * fixed bug: Displaced arrays whose displaced-to array has become
1585 too small now cause ARRAY-DIMENSION to signal an error, providing
1586 for safer bounds-checking. (reported by Bruno Haible)
1587 * fixed bug: DEFCLASS slot definitions with identical :READER and
1588 :WRITER names now signal a reasonable error. (reported by Thomas
1590 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
1592 * fixed bug: Invalid slot specification errors now print correctly.
1593 (thanks to Zach Beane)
1594 * fixed bug 320: Shared to local slot value transfers in class
1595 redefinitions now happen corrently from superclasses as
1596 well. (reported by Bruno Haible)
1597 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
1599 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
1600 improper lists correctly. (reported by Bruno Haible)
1601 * fixed bug 313: source-transform for <fun-name> was erroneously
1602 applied to a call of a value of a variable with name <fun-name>.
1603 (reported by Antonio Menezes Leitao)
1604 * fixed bug 307: The obsolete instance protocol ensures that
1605 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
1606 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
1607 remove dead unknown-values globs from the middle of the stack.
1608 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
1609 easier to resume long computations after using *BREAK-ON-SIGNALS*
1610 to diagnose and fix failures. (thanks to Nikodemus Siivola)
1611 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
1612 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
1613 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
1614 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
1615 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
1617 * fixed a (fairly theoretical) bug in string printing: if
1618 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
1619 does not have array-element-type equal to the most general string
1621 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
1622 function name. (thanks to Nikodemus Siivola)
1623 * fixed bug: compile-time format string checker failed on
1624 non-closed ~{. (reported by Thomas F Burdick)
1625 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
1626 don't warn on legal loop code involving more than one aggregate
1627 boolean. (thanks to Nikodemus Siivola)
1628 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
1629 in keyword position to MAKE-PACKAGE was not being reported as
1631 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
1632 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
1634 * fixed bugs 280 and 312: the checking for multiple definitions in a
1635 file is less likely to become confused by uses of inline
1637 * fixed bug: the #S reader macro performs the keyword coercion
1638 specified for slot names. (reported by Kalle Niemitalo)
1639 * fixed bug: lambda lists may contain symbols whose names start with
1640 & but are not lambda-list-keywords; their occurrence triggers a
1642 * fixed bug 321: define-method-combination argument lambda lists do
1643 not cause invalid code to be generated when &optional or &aux
1644 variables have default values. (reported by Bruno Haible)
1645 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
1646 have CLOS classes; this appears also to have fixed reported
1647 instability in stack exhaustion detection.
1648 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
1649 MUFFLE-WARNING when no associated restart is present is now
1651 * optimization: rearranged the expansion of various defining macros
1652 so that each expands into only one top-level form in a
1653 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
1655 * optimization: used a previously little-used slot in symbols to
1656 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
1658 * fixed some bugs revealed by Paul Dietz' test suite:
1659 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
1661 ** Fixed an optimization bug related to inheritance of initforms
1662 from local to shared slots.
1663 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
1664 ** CAST optimizer forgot to flush argument derived type.
1665 ** print/read consistency on floats is now orders of magnitude
1666 more likely. (thanks also to Bruno Haible for a similar report
1668 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
1669 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
1670 for objects of type REAL. Make it so.
1671 ** SXHASH is specified (infelicitously) to respect similarity,
1672 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
1673 it so. (thanks to Markus Ziegler)
1674 ** on the Alpha, the compiler succeeds in compiling functions
1675 returning a known number of arguments greater than 63.
1676 ** fixed handling of invalid NIL arguments in keyword position
1678 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
1680 ** provided a readably-printable representation for RANDOM-STATE
1682 ** ensured that pathnames, where they have a namestring, always
1683 print using #P"..." syntax.
1685 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
1686 * Support for the forthcoming 2.0 version of the NetBSD kernel
1687 running on x86 hardware has been added. (thanks to Perry
1688 E. Metzger most immediately, and others for their past work)
1689 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
1690 current release version; SBCL's OpenBSD support had been broken
1691 since about the time of OpenBSD's switch to ELF binary format.)
1692 * [placeholder for DX summary]
1693 ** user code with &REST lists declared dynamic-extent, under high
1694 speed or space and low safety and debug optimization policy.
1695 * The manual has been converted to Texinfo format and the debugger
1696 chapter from the cmucl manual has been added.
1697 * A facility has been added to extract documentation strings from
1698 sbcl and store them as Texinfo-formatted snippets for inclusion in
1699 the manual (via Texinfo's @include directive)
1700 * bug fix: compiler emitted division in optimized DEREF. (thanks for
1701 the test case to Dave Roberts)
1702 * bug fix: multidimensional simple arrays loaded from FASLs had fill
1703 pointers. (reported by Sean Ross)
1704 * bug fix: PROFILE output is printed nicely even for large numerical
1705 values. (thanks to Zach Beane)
1706 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
1707 greater than 32 handle EOF correctly.
1708 * bug fix: on X86 an immediate argument of the IMUL instruction is
1709 correctly printed in disassembly. (thanks to Lutz Euler)
1710 * bug fix: class slots in redefined classes preserve their old
1711 values. (thanks to Bruno Haible and Nikodemus Siivola)
1712 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
1713 succeeds. (reported by Marco Baringer)
1714 * fixed some bugs revealed by Paul Dietz' test suite:
1715 ** READ-SEQUENCE now works on ECHO-STREAMs.
1716 ** RATIONALIZE works more according to its specification. (thanks
1719 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
1720 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
1721 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
1722 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
1723 should matter to you only if you rebind the printer control
1724 variables and then find you want different bindings in the
1725 debugger than in the ordinary execution of your program.)
1726 * The runtime build system has been tweaked to support building
1727 (on SPARC/SunOS) using a C compiler which invokes Sun's own
1728 assembler and linker. (thanks to Nikodemus Siivola)
1729 * Unbound, undefined, undeclared variables now trigger full
1730 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
1731 more often programmer error than deliberate exploitation of undefined
1733 * optimization: the hash algorithm for strings has changed to one
1734 that is less vulnerable to spurious collisions. (thanks to Juho
1736 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
1737 needless bounds checking. (thanks to Juho Snellman)
1738 * optimization: implemented multiplication as a modular
1739 (UNSIGNED-BYTE 32) operation on the PPC backend.
1740 * fixed some bugs revealed by Paul Dietz' test suite:
1741 ** ADJUST-ARRAY now copies the datum in a zero rank array if
1743 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
1744 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
1745 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
1747 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
1749 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
1751 ** ECHO-STREAMs no longer attempt to echo the end of file value to
1752 their output stream on EOF from read.
1753 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
1754 have been read to end-of-file.
1755 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
1757 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
1758 description of determination of which consecutive characters
1760 ** Printing the "Space" character with escaping on now yields "#\\ ",
1761 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
1762 ** Reading floating-point numbers with *READ-BASE* set to a number
1763 less than 10 works correctly.
1764 ** Reading floating-point numbers with *READ-BASE* set to a number
1765 more than 10 works correctly.
1766 ** Printing with *PRINT-READABLY* targets the standard readtable, not
1767 the readtable currently in effect.
1769 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
1770 * minor incompatible change: parsing of namestrings on a physical
1771 (Unix) host has changed; numbers after the final #\. in a
1772 namestring are no longer interpreted as a version field. This is
1773 intented to be largely invisible to the user, except that the
1774 meaning of the namestring "*.*.*" has changed: it now refers to a
1775 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
1776 should usually be replaced by
1777 (make-pathname :name :wild :type :wild :version :wild)
1778 with the added benefit that this is more likely to be portable.
1779 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
1780 option to OPEN now signals an error if the file being opened
1781 exists; this may have an impact on existing code.
1782 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
1783 signals received, on the PowerPC platforms (both Linux and
1784 Darwin). (thanks to Pierre Mai for pointing out the location of
1786 * several fixes on OS X: The system now builds and runs cleanly on
1787 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
1788 (thanks to Brian Mastenbrook)
1789 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
1790 second-resolution: integer multiples of 1/3600 between -24 and 24.
1791 (thanks to Vincent Arkesteijn)
1792 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
1793 type when called with 1 argument; PEEK-CHAR checked type of
1794 PEEK-TYPE only after having read first character from a
1795 stream. (reported by Peter Graves)
1796 * bug fix: the garbage collector now has much better locality
1797 behaviour, and in particular no longer treats all memory as being
1798 exhausted when many small objects point to each other in a deeply
1800 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
1801 recognized as being TYPEP their class.
1802 * bug fix: the PUSHNEW documentation string has been corrected.
1803 (thanks to Vincent Arkesteijn)
1804 * bug fix: defaulting of the value for the last of an atypically
1805 large number of multiple values being bound was not being
1806 performed correctly on the Alpha or PPC platforms
1807 * optimization: implemented multiplication as a modular
1808 (UNSIGNED-BYTE 32) operation on the x86 backend.
1809 * optimization: SEARCH on simple-base-strings can now be open-coded.
1810 (see also contrib/compiler-extras.lisp for inspiration for
1811 teaching the compiler about the Boyer-Moore algorithm).
1812 * value, returned by MAX (and MIN) called with several EQUALP, but
1813 not EQL, arguments now does not depend on compiler settings.
1814 * fixed some bugs revealed by Paul Dietz' test suite:
1815 ** in stack analysis liveness information is propagated from
1816 non-local entry points.
1817 ** pathwise CAST removing failed when the CAST node did not start
1819 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
1820 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
1822 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
1823 host is already defined.
1824 ** RENAME-FILE works on streams instead of signalling an internal
1826 ** PEEK-CHAR uses the current readtable when determining whether
1827 or not a character is whitespace.
1828 ** MERGE-PATHNAMES handles the case when the pathname does not
1829 specify a name while the default-pathname specifies a version.
1830 ** Pathnames now stand a better chance of respecting print/read
1832 ** Attempting to use standardized file system operators with a
1833 pathname with invalid :DIRECTORY components signals a
1835 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
1837 ** DIRECTORY on logical pathnames is more correct.
1838 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
1839 signal a TYPE-ERROR if their argument is not a stream.
1840 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
1841 designator argument does not designate a stream.
1842 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
1843 examining the synonym.
1844 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
1846 ** OPEN and WITH-OPEN-STREAM allow opening streams with
1847 element-type larger than ([UN]SIGNED-BYTE 32).
1849 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
1850 * When built with the :SB-FUTEX feature, threaded builds now take
1851 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
1852 for faster/more reliable mutex and condition variable support.
1853 * Incompatible change (but one you probably shouldn't have been using
1854 anyway): the interface and code for arbitrating between multiple
1855 threads in the same user session has been redesigned.
1856 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
1857 error when called without an explicit environment argument.
1858 (thanks to Nikodemus Siivola)
1859 * bug fix: buffered :DIRECTION :IO streams are less likely to become
1860 confused about their position. (thanks to Adam Warner and Gerd
1862 * bug fix: Pretty printing backquoted forms with unquotations in the
1863 argument list position of various code constructs such as LAMBDA
1864 now works correctly. (reported by Paul Dietz)
1865 * bug fix: Pretty printing unquotations no longer loses all
1866 stream position information.
1867 * optimization: performance of string output streams is now less
1868 poor for multiple small sequence writes.
1869 * optimization: performance of CSUBTYPEP in the presence of complex
1870 expressions involving CONS and NOT many times has been improved.
1871 (reported by Paul Dietz)
1872 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
1874 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
1875 streams for the REPL, for the debugger, and so on. (thanks to
1877 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
1878 * fixed some bugs revealed by Paul Dietz' test suite:
1879 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
1880 is ignored if it is too small, rather than propagating through
1881 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
1882 ** extremely complex negations of CONS types were not being
1883 sufficiently canonicalized, leading to inconsistencies in
1885 ** VALUES tranformer lost derived type.
1887 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
1888 * fixed a bootstrapping bug: the build process no longer assumes
1889 that the various BOOLE-related constants have the same value in
1890 host and target lisps. (noted by Paul Dietz' test suite on an
1891 SBCL binary built from CLISP)
1892 * The system can now be dynamically linked on the MIPS platform,
1893 which enables dynamic loading of foreign code from Lisp. (thanks
1894 to Ralf Baechle for discussions on the MIPS ABI)
1895 * The system now records debugging information for its own source
1896 files in a filesystem-position-independent manner, relative to
1897 the "SYS" logical host.
1898 * fixed a compiler bug: MV-LET convertion did not check references
1899 to the "max args" entry point. (reported by Brian Downing)
1900 * tweaked disassembly notes to be less confident about proclaiming
1901 some instruction as an LRA. (thanks to Brian Downing)
1902 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
1903 now each have their own history, command character, and other
1904 characteristics. (thanks to David Lichteblau)
1905 * fixed some bugs revealed by Paul Dietz' test suite:
1906 ** compiler failure in compiling LOGAND expressions including a
1908 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
1909 shift greater than 32.
1910 ** FLUSH-DEST did not mark blocks for type check regeneration.
1911 ** HANDLER-CASE failed to accept declarations in handler clauses
1912 in some circumstances.
1914 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
1915 * New code in contrib/sb-introspect (still probably not entirely
1916 stable yet) provides some support for smart Lisp development
1917 environments like SLIME.
1918 * The conditions signalled for errors occurring when loading .fasl
1919 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
1920 in a way which should help ASDF recover gracefully.
1921 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
1922 stuff has been cleaned up. If you code contrib/ stuff, this might
1923 affect you, and you can look at contrib/README, contrib/STANDARDS,
1924 and/or the 0.8.4.27 diff to check.
1925 * In full calls the compiler now does not generate checks for declared
1926 argument types for all arguments.
1927 * various threading fixes
1928 ** and some experimental patches which didn't make it into
1929 the main tree for this release, but which are shipped in
1930 contrib/experimental-thread.patch as a possible fix for some
1931 failures (deadlock, spinning...) in GC-intensive multithreaded
1933 * fixed PPC build problem (source code incompatibility of different
1934 library versions): added offsetof() hackery which attempts to divine
1935 where glibc maintainers put uc_mcontext today
1936 * fixed bug 282: compiler does not trust type assertions while passing
1937 arguments to a full call.
1938 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
1939 &OPTIONAL VALUES type parameter.
1940 * fix bug 214: algorithm for noting rejected templates is now more
1941 similar to that of template seletion. (also reported by rydis on
1943 * fixed bug 141b: printing backquoted information readably and prettily
1944 inserts a space where necessary.
1945 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
1946 (CHARACTER 10) are now reported as errors, rather than propagated
1947 as unknown types. (reported by piso on #lisp)
1948 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
1949 with values NIL and :ERROR. (thanks to Milan Zamazal)
1950 * fixed bug 191c: CLOS now does proper keyword argument checking as
1951 described in CLHS 7.6.5 and 7.6.5.1.
1952 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
1953 longer raise an error; further, using a list as a for-as-arithmetic
1954 counter now raises a meaningful error.
1955 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
1956 now understood by sequence creation functions such as MAKE-SEQUENCE
1958 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
1959 a STRING-INPUT-STREAM.
1960 * compiler enhancement: SIGNUM is now better able to derive the type
1962 * type declarations inside WITH-SLOTS are checked. (reported by
1964 * fixed some bugs revealed by Paul Dietz' test suite:
1965 ** incorrect optimization of TRUNCATE for a positive first
1966 argument and negative second.
1967 ** compiler failure in let-convertion during flushing dead code.
1968 ** compiler failure while deriving type of TRUNCATE on an
1969 interval, containing 0.
1970 ** ASH of a negative bignum by a negative bignum count now returns
1972 ** intersection of CONS types now canonicalizes properly, fixing
1973 inconsistencies in SUBTYPEP.
1975 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
1976 * incompatible change: The --disable-debugger command line
1977 option now clobbers the debugger at a more fundamental
1978 level, by redefining #'INVOKE-DEBUGGER instead of by
1979 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
1980 is specified by ANSI to ignore *DEBUGGER-HOOK* and
1981 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
1982 enter the debugger REPL and then suffer recursive errors
1983 because *DEBUG-IO* is also messed up in --disable-debugger mode;
1984 while under the new system, BREAK in --disable-debugger mode
1985 terminates the system just as an unhandled error would.
1986 * fixed compiler performance when processing loops with a step >1;
1987 * bug fix: DOCUMENTATION now retrieves generic function
1988 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
1989 support has been systematized, and now supports the methods
1990 specified by ANSI, along with a default method and a method for
1991 slot documentation. (reported by Nathan Froyd)
1992 * bug fix: effective methods associated with a generic function are
1993 no longer cached over a change of that generic function's method
1994 combination. (reported by Andreas Fuchs)
1995 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
1996 names a non-existent directory. (thanks to Andreas Fuchs)
1997 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
1998 the PPC platform, lead to stack corruption; this has been fixed.
1999 (reported by Rainer Joswig)
2000 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
2001 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
2002 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
2003 arithmetic in general, is now much more reliable on the PPC
2005 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
2006 platform now returns the right answer.
2007 * optimization: restored some effective method precomputation in
2008 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
2009 precomputation is now tunable.
2010 * optimization: compiler-internal data structure use has been
2011 reviewed, and changes have been made that should improve the
2012 performance of the compiler by about 20%.
2013 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
2014 simple-base-strings and simple-bit-vectors is improved.
2015 * optimization: the optimization of 32-bit logical and arithmetic
2016 functions introduced in version 0.8.3 on the x86 has been
2017 implemented on the mips, ppc and sparc platforms; an
2018 implementation of the same facility, but for 64-bit arithmetic,
2019 has been added for the alpha.
2020 * microoptimization: the compiler is better able to make use of the
2021 x86 LEA instruction for multiplication by constants.
2022 * bug fix: in some situations compiler did not report usage of
2023 generic arithmetic in (SPEED 3) policy.
2024 * bug 145b fix: compiler used wrong type specifier while converting
2025 MEMBER-types to numeric.
2026 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
2028 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
2029 index argument now works properly on the Alpha platform.
2030 * bug fix: floating point exception treatment on the Alpha platform
2032 * bug fix: FILE-POSITION works much better on string input and
2033 output streams. (thanks to Nikodemus Siivola)
2034 * bug fix: many threading/garbage collection symptoms sorted.
2035 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
2036 might be pseudo-atomic.
2037 * internal change: Stopping for GC is now done with signals not
2038 ptrace. GC is now done in whichever thread wanted it, instead of
2040 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
2042 * bug fix: result form in DO is not contained in the implicit
2044 * incompatible change: ICR structure is changed; the value part of
2045 CONTINUATION is now called LVAR; corresponding functions are
2046 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
2047 * added type deriver for ISQRT (thanks to Robert E. Brown).
2048 * bug fix: better support for loading from the command line when an
2049 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
2051 * fixed some bugs revealed by Paul Dietz' test suite:
2052 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
2053 ** ROUND and FROUND now give the right answer when given very
2054 small float arguments.
2055 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
2057 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
2058 ** (GCD 0 <negative-integer>) returned <negative-integer>.
2059 ** LCM should return a non-negative integer.
2060 ** PARSE-INTEGER returned the index of a terminator instead of the
2061 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
2062 ** PARSE-INTEGER returned an incorrect index being applied to a
2064 ** LCM with two arguments of 0 returns 0 rather than signalling
2066 ** unsigned addition of a 32-bit constant with the high bit set no
2067 longer causes an internal compiler error on the x86.
2068 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
2069 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
2070 with negative last argument.
2071 ** byte specifiers with zero size and position no longer cause
2072 an error during type derivation.
2073 ** bignum multiplication on the Alpha platform now returns the
2075 * porting: The system now builds on SuSE AMD64, although it still
2076 generates a 32-bit binary.
2077 * .fasl file incompatibility: The fasl file version number has
2078 been incremented (because of the changes to internal compiler
2079 data structures referred to above).
2081 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
2082 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
2083 more accurately, on the Darwin kernel running on PowerPC hardware.
2084 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
2085 * Compiler code deletion notes now signal a condition of type
2086 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
2087 an associated MUFFLE-WARNING restart.
2088 * The compiler now performs limited argument count validation of
2089 constant format strings in FORMAT, and where appropriate in ERROR,
2090 CERROR and WARN. (thanks to Gerd Moellmann)
2091 * New ASDF-INSTALL contrib can be used for automatic download and
2092 installation of third-party Lisp code from CCLAN or other sites
2094 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
2095 which forces another thread to execute a function supplied by the
2097 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
2098 now accept and act upon their :ELEMENT-TYPE keyword argument.
2099 (reported by Martin Atzmueller, Edi Weitz)
2100 * bug fix: FILE-POSITION now accepts position designators up to
2101 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
2102 is the greater. (thanks to Patrik Nordebo)
2103 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
2104 Kalle Olavi Niemitalo)
2105 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
2106 printable. (reported by Eric Marsden)
2107 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
2108 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
2109 * x86 bug fix in control stack exhaustion checking: now shows backtrace
2110 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
2111 (thanks to Stig Sandoe)
2112 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
2113 UNREAD-CHAR now correctly includes the unread character in the
2114 target sequence. (thanks to Gerd Moellmann)
2115 * bug fix in threaded builds: the system can now be suspended and
2116 resumed by shell job control with minimal disruption.
2117 * bug fixes in times and timezones >2038AD
2118 * better handling of "where is GNU make?" problem in build scripts
2119 (thanks to Nikodemus Siivola)
2120 * new optimization: inside a named function any reference to a
2121 function with the same name is considered to be a self-reference;
2122 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
2123 optimization quality.
2124 * new optimization on x86: logical functions and + now have
2125 optimized (UNSIGNED-BYTE 32) versions, which are automatically
2126 used when the result is truncated to 32 bits.
2127 * VALUES declaration is partially enabled.
2128 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
2129 * fixed some bugs revealed by Paul Dietz' test suite:
2130 ** The system now obeys the constraint imposed by
2131 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
2132 types form a lattice under type intersection.
2133 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
2134 ** ASSOC now ignores NIL elements in an alist.
2135 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
2136 and (1+ MOST-POSITIVE-FIXNUM) answers.
2137 ** The addition of a method with invalid qualifiers to a generic
2138 function does not cause an error to be signalled immediately;
2139 a warning is signalled, and the error is generated only on
2140 calling the generic function.
2141 * changed .fasl file version number, in part to add type codes for
2142 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
2143 obscure ANSI requirements
2145 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
2146 * fixed bug 148: failure to inline-expand a local function left
2147 garbage, confusing the compiler.
2148 * fixed bugs 3cd: structure slot readers perform type check if the
2149 slot can have an invalid value (i.e. it is either not initialized
2150 or can be written with a less specific slot writer).
2151 * bug fix: the compiler now traps array references to elements off
2152 the end of an array; previously, the bounds checking in some
2153 circumstances could go off-by-one.
2154 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
2156 * type declarations for array element types now obey the description
2157 on the CLHS page "Declaration TYPE", as per discussions on
2158 sbcl-help around 2003-05-08. This means that a declaration
2159 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
2160 declaration, all references to BAR will be asserted or assumed
2161 (with THE, so dependent on compiler policy) to involve objects of
2162 type FOO. Note that no such declaration is implied in
2163 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
2164 * declared types of functions from the "Conditions"
2165 chapter. (reported by Paul Dietz)
2166 * bug fix: CERROR accepts a function as its first argument.
2167 * bug fix: NTH an NTHCDR accept a bignum as index
2168 arguments. (reported by Adam Warner)
2169 * optimization: character compare routines now optimize comparing
2170 against a constant character. (reported by Gilbert Baumann)
2171 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
2172 argument now works properly on the MIPS platform.
2173 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
2174 * repeated evaluation of the same DEFSTRUCT, a slot of which is
2175 declared to have a functional type, does not cause an error
2177 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
2178 many :DEFAULT-INITARGS. (reported by Istvan Marko)
2179 * fixed bug: if last continuation of a deleted block has a
2180 destination, this destination should be deleted too. (reported by
2182 * fixed a bug in the bootstrap process: the host compiler's values
2183 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
2184 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
2185 test case from Patrik Nordebo)
2186 * improved the ability of the disassembler on the PPC platform to
2187 provide helpful disassembly notes.
2188 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
2189 the class in more cases than previously.
2190 * bug fix: FILE-POSITION now understands :START and :END for
2191 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
2192 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
2193 8) data. (thanks to David Lichteblau)
2194 * bug fix: it is possible to add a method to a generic function
2195 without lambda list.
2196 * bug fix: reader failed to signal END-OF-FILE inside an
2197 object representation. (reported by Nikodemus Siivola)
2198 * fixed some bugs revealed by Paul Dietz' test suite:
2199 ** LAST and [N]BUTLAST should accept a bignum.
2200 ** condition slot accessors are methods.
2201 ** (VECTOR NIL) is a subtype of STRING.
2203 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
2204 * minor incompatible change: some nonsensical specialized lambda
2205 lists (used in DEFMETHOD) which were previously ignored now signal
2207 * minor incompatible change: the system is now aware of the types of
2208 variables in the COMMON-LISP package, and will signal errors for
2209 most violations of these type constraints (where previously they
2210 were silently accepted).
2211 * minor incompatible change: COMPILE-FILE now uses the freedom
2212 afforded (ANSI 3.2.2.3) to use derived function types for
2213 functions defined in the same file. This also permits the system
2214 to warn on static type mismatches and function
2215 redefinition. (Currently it does not work with high DEBUG level.)
2216 * minor incompatible change: VALUES declaration is disabled.
2217 * When issuing notes, the compiler now signals a condition of type
2218 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
2219 restart for use in user handlers. It is expected that the
2220 COMPILER-NOTE condition will eventually become a condition
2221 supertype to a hierarchy of note types, which will then be
2222 handleable in a similar fashion. However, at the moment, no such
2223 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
2224 but it's an implementation detail, not a classification for the
2226 * Changes in type checking closed the following bugs:
2227 ** type checking of unused values (192b, 194d, 203);
2228 ** template selection based on unsafe type assertions (192c, 236);
2229 ** type checking in branches (194bc).
2230 * A short form of VALUES type specifier has ANSI meaning (it has
2231 increased the number of situations when SBCL cannot perform type
2233 * fixed bug in DEFSTRUCT: once again, naming structure slots with
2234 keywords or constants is permissible.
2235 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
2236 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
2237 classes. (thanks to Antonio Martinez)
2238 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
2239 outputs FRESH-LINE or TERPRI, and no longer converts its stream
2240 argument to a pretty-print stream. Instead, it leaves any such
2241 operations to DESCRIBE-OBJECT methods.
2242 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
2244 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
2245 lambda lists. (thanks to David Lichteblau)
2246 * bug fix: Defining a generic function with a :METHOD-CLASS being a
2247 subclass of STANDARD-METHOD no longer causes stack exhaustion.
2248 (thanks to Gerd Moellmann)
2249 * fixed bug 246: increased compilation speed of long
2250 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
2252 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
2254 * DEFCONSTANT now throws a condition of type
2255 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
2256 constant to a non-EQL value; CONTINUE and ABORT restarts
2257 respectively change and preserve the value.
2258 * fixed bug 63: The code walker, part of the implementation of CLOS,
2259 is now better at handling symbol macros.
2260 * bug fix: There is no longer an internal implementation type named
2261 CL:LENGTH. (reported by Raymond Toy)
2262 * bug fix: In macro-like defining macros/special operators the
2263 implicit block does not enclose the lambda list.
2264 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
2265 enclosed in parentheses) are not suitable as type specifiers, and
2266 their use properly signals an error now.
2267 * bug fix: An argument count mismatch for a type specifier in code
2268 being compiled no longer causes an unhandled error at compile
2269 time, but signals a compile-time warning.
2270 * fixed simple vector readable printing
2271 * bug fix: DESCRIBE takes more care over whether the class
2272 precedence list slot of a class is bound before accessing it.
2273 (reported by Markus Krummenacker)
2274 * bug fix: FORMATTER can successfully compile pretty-printer format
2275 strings which use variants of the ~* directive inside.
2276 * bug fix: SEARCH now applies its TEST predicate to the elements of
2277 the arguments in the correct order. (thanks to Wolfhard Buss)
2278 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
2279 in type inference. (thanks to Robert E. Brown)
2280 * bug fix: Reading in symbols with an explicit package name of ""
2281 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
2282 * fixed some bugs revealed by Paul Dietz' test suite:
2283 ** NIL is now allowed as a structure slot name.
2284 ** Arbitrary numbers, not just REALs, are allowed in certain
2285 circumstances in LOOP for-as-arithmetic clauses.
2286 ** Multiple class redefinitions before slot access no longer
2287 causes a type error.
2288 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
2289 association between the name and a class.
2290 ** Generic functions with non-standard method-combination and over
2291 five methods all of which return constants no longer return NIL
2292 after the first few invocations. (thanks to Gerd Moellmann)
2293 ** CALL-NEXT-METHOD with no arguments now passes the original
2294 values of the arguments, even in the presence of assignment.
2295 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
2297 ** DISASSEMBLE works with closures and funcallable instances.
2298 ** ADD-METHOD now returns the generic function, not the new method.
2299 ** FIND-METHOD signals an error if the lengths of the specializers
2300 is incompatible with the generic function, even if the ERRORP
2302 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
2303 which its argument is a member.
2304 ** DEFCLASS only redefines the class named by its class-name
2305 argument if that name is the proper name of the class;
2306 otherwise, it creates a new class.
2307 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
2308 of the UNBOUND-SLOT condition to the name of the slot.
2309 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
2310 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
2311 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
2312 SLOT-MAKUNBOUND in the specified fashion.
2314 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
2315 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
2316 cross-compilation host. As a consequence, we can now bootstrap our
2317 way up to SBCL starting with a bare gcc toolchain and human-readable
2318 source code (first the source to CLISP, then the source to SBCL).
2319 * A contributed module containing a partial implementation of the
2320 simple-streams interface has been included. (thanks to Rudi
2322 * A contributed module implementing the RFC1321 Message Digest
2323 Algorithm, known as MD5, has been included.
2324 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
2325 no longer has any effect, as the code controlled by this feature
2326 has been deleted. (As far as we know, no-one has ever built using
2327 this feature, and its semantics were confused in any case).
2328 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
2329 work on conditions (as required by the ANSI specification),
2330 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
2331 expected behaviour on conditions. Users should note, however,
2332 that such behaviour is not required by the ANSI specification,
2333 and so use of this behaviour may render their code unportable.
2334 * fixed some bugs revealed by Paul Dietz' test suite:
2335 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
2337 ** &ENVIRONMENT parameter in macro lambda list is bound first.
2338 ** SXHASH on condition objects no longer returns NIL.
2339 ** :ALLOCATION :CLASS slots are better treated; their values are
2340 updated on class redefinition, and initforms inherited from
2341 superclasses are applied.
2342 ** REMOVE-METHOD returns its generic function argument even when
2343 no method was removed.
2344 ** SHARED-INITIALIZE now initializes the values of the requested
2345 slots, including those with :ALLOCATION :CLASS.
2346 ** ALLOCATE-INSTANCE now works on structure classes defined via
2347 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
2349 ** SLOT-EXISTS-P now works on conditions, as well as structures
2351 ** MAKE-LOAD-FORM now has the required methods on
2352 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
2353 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
2354 keyword, and now implements the SLOT-NAMES argument.
2355 ** methods with &OPTIONAL arguments no longer allow too many
2356 arguments to be passed in the call without error.
2357 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
2358 option is consistent with the required arguments of the generic
2359 function lambda list.
2360 * bug fix: REQUIRE accepts a string designator. (Thanks to
2362 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
2363 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
2364 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
2365 * bug fix: The compiler now checks for duplicated variables in macro
2367 * bug fix: SETQ on globals returns the correct value.
2368 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
2369 not a COMPILER-ERROR (followed by some other strange error on
2370 choosing the CONTINUE restart).
2371 * bug fix: make.sh and friends are now more consistent in the way that
2372 they look for GNU "make".
2374 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
2375 * experimental native threads support (on x86 Linux >=2.4 only).
2376 This is not compiled in by default: you need to add :SB-THREAD to
2377 the target features. See the "Beyond ANSI" chapter of the manual
2379 * fix for longstanding nonANSIism: The old distinction between
2380 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
2381 The return value from CL:FIND-CLASS is now a CLOS class, and
2382 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
2383 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
2384 * An interface to the MetaObject Protocol, as described in Kiczales,
2385 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
2386 MIT Press, 1991, is available from the SB-MOP package.
2387 * incompatible change: the SB-PCL package should now be considered
2388 a private implementation detail, and no longer a semi-private MOP
2390 * minor incompatible change: due to rearrangement for threads, the
2391 control stack and binding stack are now allocated at arbitrary
2392 addresses instead of being hardcoded per-port. Users affected by
2393 this probably have to be doing advanced things with shared
2394 libraries, and will know who they are.
2395 * minor incompatible change: Previously, all --eval forms used were
2396 processed with READ before any of them were processed with EVAL.
2397 Now each --eval form is processed with both READ and EVAL before
2398 the next --eval form is processed. (Thus package operations like
2399 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
2400 work as the user might reasonably expect.)
2401 * minor incompatible change: *STANDARD-INPUT* is now only an
2402 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
2404 * minor incompatible change: Y-OR-N-P is now character-oriented,
2405 not line oriented. Also, YES-OR-NO-P now works without errors.
2406 (thanks to Antonio Martinez)
2407 * sb-aclrepl module improvements: an integrated inspector, added
2408 repl features, and a bug fix to :trace command.
2409 * Known functions, which cannot be open coded by the backend, are
2410 considered to be able to check types of their arguments. (fixing
2411 a bug report by Nathan J. Froyd)
2412 * fixed a bug in computing method discriminating functions: It is
2413 now possible to define methods specialized on classes which have
2414 forward-referenced superclasses. (thanks to Gerd Moellmann)
2415 * fixed evaluation order in optional entries (reported by Gilbert
2417 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
2418 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
2419 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
2420 required-by-AMOP NAME argument, as well as CLASS and
2421 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
2422 * fixed bug 20: DEFMETHOD can define methods using names that are
2423 not the proper names of classes to designate class specializers.
2424 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
2425 Unix file descriptors, instead of blowing up. (thanks to Antonio
2427 * Garbage collection refactoring: user-visible change is that a
2428 call to the GC function during WITHOUT-GCING will not do garbage
2429 collection until the end of the WITHOUT-GCING. If you were doing
2430 this you were probably losing anyway.
2431 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
2432 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
2433 TYPEP the latter but not the former.
2434 * The compiler issues a full WARNING for calls to undefined functions
2435 with names from the CL package.
2436 * MAP-INTO for a vector destination is open coded. (reported by
2437 Brian Downing on c.l.l)
2438 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
2439 documentation string.
2440 * fixed some bugs revealed by Paul Dietz' test suite:
2441 ** COPY-ALIST now signals an error if its argument is a dotted
2443 ** Condition slots are now accessed more correctly in the presence
2444 of multiple initargs for a given slot.
2445 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
2446 exclude restarts of the same name associated with a different
2448 ** DEFCLASS of forward-referenced classes with another
2449 forward-referenced class in the superclasses list no longer
2451 ** Condition slots are now initialized once each, not multiple
2452 times. (thanks to Gerd Moellmann)
2453 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
2455 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
2456 ** NSET-EXCLUSIVE-OR does not return extra elements when its
2457 arguments contain duplicated elements.
2458 ** RESTART-CASE understands local macros.
2459 ** RESTART-CASE associates exactly its own restarts with a condition.
2460 ** ENDP in safe mode checks its argument to be of type LIST.
2461 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
2462 in question is unbound.
2463 ** Optimized MAKE-INSTANCE functions no longer cause internal
2464 assertion failures in the presence of duplicate initargs.
2465 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
2466 ** Side-effectful :DEFAULT-INITARGS have their side-effects
2467 propagated even in the ctor optimized implementation of
2469 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
2471 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
2472 * a better implementation of SXHASH on (simple) bit vectors,
2473 measured both in execution speed and in distribution of results
2474 over the positive fixnums, has been installed. Likewise, a better
2475 implementation of EQUAL for simple bit vectors is now available.
2476 * fixed CEILING optimization for a divisor of form 2^k.
2477 * fixed bug 240 (emitting extra style warnings "using the lexical
2478 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
2479 by Antonio Martinez)
2480 * fixed SXHASH, giving different results for NIL depending on type
2481 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
2482 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
2483 variable. (found by Rolf Wester)
2484 * SBCL does not ignore type declarations for special
2485 variables. (reported by rif on c.l.l 2003-03-05)
2486 * some bug fixes in contrib/sb-aclrepl/
2487 * fixed some bugs revealed by Paul Dietz' test suite:
2488 ** a bug in the CONS type specifier, whereby the CAR and CDR
2489 types got intertwined, has been fixed;
2490 ** the type system is now able to reason about the interaction
2491 between INTEGER and RATIO types more completely;
2492 ** APPEND, [N]REVERSE and NRECONC check that those their
2493 arguments, which must be proper lists, are really so;
2494 ** An array specialized to be unable to hold elements has been
2495 implemented, as required -- yes, really -- by ANSI;
2496 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
2497 on malformed property lists;
2499 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
2500 * incompatible packaging change: in line with Unix convention,
2501 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
2502 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
2503 * REQUIRE and PROVIDE are now optionally capable of doing something
2504 useful. See the documentation string for REQUIRE.
2505 * infrastructure for a managed SBCL contrib system: contributed
2506 modules in this release include:
2507 ** the ASDF system definition facility;
2508 ** an interface to the BSD Sockets API;
2509 ** an ACL-like convenience interface to the repl;
2510 (thanks to Kevin Rosenberg)
2511 ** an implementation of ROTATE-BYTE, with efficient implementation
2513 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
2514 gives a closer approximation to the right answer than previously.
2515 (thanks to Raymond Toy)
2516 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
2517 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
2518 optional environment arguments, as required by ANSI.
2519 * fixed bugs in other functions taking environment objects, allowing
2520 calls with an explicit NIL environment argument to be compiled
2522 * fixed bug 228: primary return values from
2523 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
2524 COMPILE or FUNCTION.
2525 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
2526 :TYPE will no longer signal errors on innocuous objects.
2527 * fixed bug 231b: SETQ is better at respecting type declarations in
2528 the lexical environment.
2529 * fixed a bug in DEFCLASS: classes named by symbols with no or
2530 unprintable packages can now be defined.
2531 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
2532 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
2533 * fixed compiler failure related to checking types of functions.
2534 (reported by Robert E. Brown)
2535 * the compiler is now much more consistent in its error-checking
2536 treatment of bounding index arguments to sequence functions: in
2537 (SAFETY 3) code, errors will be signalled in almost all cases if
2538 invalid sequence bounding indices are passed to functions defined
2539 by ANSI to operate on sequences.
2540 * fixed a bug in the build procedure: documentation of SBCL-specific
2541 packages is now preserved and available in the final Lisp image.
2542 * lifted FDEFINITION lookup out of loops in the implementation of
2543 many list operations. (thanks to Robert E. Brown)
2544 * fixed a bug in the reader: the #n# reader macro now works for
2545 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
2546 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
2547 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
2548 E. Brown and Tony Martinez respectively)
2549 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
2550 SLOT-BOUNDP: in particular, it is now able to optimize them much
2551 better, and is now not vulnerable to having packages renamed.
2552 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
2553 always called when a slot is not present in an instance. (thanks
2555 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
2556 longer signal an error on unreading a character following EOF on
2557 the previous constituent stream. (thanks to Tony Martinez)
2558 * fixed some bugs revealed by Paul Dietz' test suite:
2559 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
2560 not just nonnegative fixnums;
2561 ** the logical bit-array operators such as BIT-AND now accept an
2562 explicit NIL for their "opt-arg" argument (to indicate a
2563 freshly-consed result bit-array);
2564 ** ELT now signals an error on an invalid sequence index in safe
2566 ** the type system is now cleverer about negations of numeric
2567 types, and consequently understands the BIGNUM and RATIO types
2569 ** the type system is now cleverer about the interaction between
2570 INTEGER and RATIO types: while bugs still remain, many more
2571 cases are accurately computed;
2572 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
2573 if it is in the last clause;
2574 ** CONSTANTLY now correctly returns a side-effect-free function in
2576 ** DECLARE is no longer treated as a special-operator; in
2577 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
2578 * incremented fasl file version number due to the change in the
2579 DEFSTRUCT-SLOT-DESCRIPTION structure.
2581 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
2582 * minor incompatible change: code processed by the "interpreter" or
2583 EVAL now has a compilation optimization policy of (DEBUG 2)
2584 (changed from (DEBUG 1)) to improve debuggability of interactive
2585 development, and to allow the use of the debug RETURN command in
2587 * an experimental implementation of the RETURN command for the
2588 debugger has been included. (thanks to Frederik Kuivinen)
2589 * fixed bug 62: constraints were not propagated into a loop.
2590 * fixed bug in embedded calls of SORT (reported and investigated by
2592 * fixed some bugs revealed by Paul Dietz' test suite:
2593 ** printing and reading of arrays with some dimensions having
2594 length 0 (thanks to Gerd Moellmann);
2595 ** BOA constructor with &AUX argument without a default value does
2596 not cause a type error;
2597 ** CONSTANTP now returns true for all self-evaluating objects.
2599 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
2600 * fixed bug 127: DEFSTRUCT now does not clobber old structure
2601 accessors that are related by inheritance, as specified in the
2602 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
2603 Valtteri Vuorikoski)
2604 * The compiler is now able to inline functions that were defined in
2605 a complex lexical environment (e.g. inside a MACROLET).
2606 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
2608 * Support for the upcoming FreeBSD-5.0 release has been included.
2609 (thanks to Dag-Erling Smorgrav)
2610 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
2611 effect when it is not in a toplevel context.
2612 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
2613 stand a better chance of being correct. (thanks to Gerd
2615 * fixed bug in COERCE, which now signals an error on coercing a
2616 rational to a bounded real type which excludes the expected
2618 * The compiler is now able to derive types more accurately from the
2619 COERCE and COMPILE functions.
2620 * fixed bug 223: functional binding is considered to be constant
2621 only for symbols in the CL package.
2622 * fixed bug 231: SETQ did not check the type of a variable being set
2623 (reported by Robert E. Brown)
2624 * A new optimization for MAKE-INSTANCE has been included, fixing
2625 various bugs (including relating to :ALLOCATION :CLASS slots and
2626 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
2628 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
2629 ** As required by ANSI, LOOP now disallows anonymous collection
2630 clauses such as COLLECT I in conjunction with aggregate boolean
2631 clauses such as THEREIS (= I 1);
2632 ** LOOP now signals an error when any variable is reused in the
2633 same loop (including the potentially useful construct analogous
2634 to WITH A = 1 WITH A = (1+ A);
2635 ** IT is only a special loop symbol within the first clause of a
2636 conditional loop clause;
2637 ** LOOP with a typed iteration variable over a hashtable now
2638 signals a type error iff it should.
2639 * fixed some other bugs revealed by Paul Dietz' test suite:
2640 ** FILE-STREAM now names the class previously known as FD-STREAM;
2641 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
2642 argument) no longer signals an error;
2643 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
2644 of the slot symbol, rather than using the current package
2645 ((:CONC-NAME "") continues to intern the slot's name in the
2647 * incremented fasl file version number, because of the incompatible
2648 change to the DEFSTRUCT-DESCRIPTION structure, and again because
2649 of the new implementation of DEFINE-COMPILER-MACRO.
2651 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
2652 * Support for building SBCL for MIPS platforms running in
2653 little-endian mode has now been checked in, and basic
2654 functionality on said platforms verified.
2655 * minor incompatible change: PCL now records the pathname of a file
2656 in which methods and the like are defined, rather than its
2658 * minor incompatible change: TRUENAME now considers the truename of
2659 a file naming a directory to be the pathname with :DIRECTORY
2660 component indicating that directory.
2661 * minor incompatible change: a NAMED clause in the extended form of
2662 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
2663 reason for the previous behaviour is unclear.
2664 * more systematization and improvement of CLOS and MOP conformance
2665 in PCL (thanks to Gerd Moellman and Pierre Mai):
2666 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
2668 ** DEFINE-METHOD-COMBINATION no longer signals an error for
2669 primary methods with no specializers;
2670 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
2672 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
2673 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
2674 FORWARD-REFERENCED-CLASSes; error reporting on
2675 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
2677 ** SXHASH on CLOS instances now uses a slot internal to the
2678 instance to return different numbers on distinct instances,
2679 while preserving the same return value through invocations of
2681 ** DEFMETHOD signals errors when methods with longer incongruent
2682 lambda lists are added to generic functions;
2683 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
2684 CLASS, as specified in AMOP;
2685 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
2686 on the order returned by the primary method for classes of
2687 class STANDARD-CLASS;
2688 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
2689 * fixed some bugs shown by Paul Dietz' test suite:
2690 ** DOLIST puts its body in TAGBODY;
2691 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
2693 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
2694 value producing form;
2695 ** if more variables are given to PROGV than values, extra
2696 variables are bound and made to have no value;
2697 ** NSUBSTITUTE on list arguments gets the right answer with
2699 ** ELT signals an error of type TYPE-ERROR when the index argument
2700 is not a valid sequence index;
2701 ** LOOP signals (at macroexpansion time) an error of type
2702 PROGRAM-ERROR when duplicate variable names are found;
2703 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
2704 ** FUNCALL of special-operators now cause an error of type
2706 ** PSETQ now works as required in the presence of side-effecting
2707 symbol-macro places;
2708 ** NCONC accepts any object as its last argument;
2709 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
2711 ** loop-for-as-package does not require a package to be explicitely
2713 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
2715 * fixed bug 166: compiler preserves "there is a way to go"
2716 invariant when deleting code.
2717 * fixed bug 172: macro lambda lists with required arguments after
2718 &REST arguments now cause an error to be signalled. (thanks to
2720 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
2721 bug. (thanks to Matthew Danish)
2722 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
2724 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
2725 arguments are lexically rebound. (thanks to Gerd Moellmann and
2727 * fixed bug 194: error messages are now more informative when there
2728 is no primary method applicable in a call to a generic
2729 function. (thanks to Gerd Moellmann)
2730 * fixed bug in command line argument checking (thanks to Julian
2732 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
2733 (thanks to Matthew Danish)
2734 * incremented fasl file version number, because of the
2735 SXHASH-related changes in the layout of CLOS data structures
2737 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
2738 * minor incompatible change: The runtime (the Unix executable named
2739 "sbcl") is now much pickier about the .core files it will load.
2740 Essentially it now requires .core files to descend from the same
2741 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
2742 as the runtime does. (The intent is to prevent the crashes which
2743 can occur, and which can even be reported as mysterious failures,
2744 when people patch the sources or change the build parameters
2745 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
2746 sbcl and .core files.)
2747 * fixed bug: VALUES-LIST is no longer optimized away.
2748 * fixed bug 142: The FFI conversion of C string values to Lisp
2749 string values no longer conses excessively. (thanks to Nathan
2750 Froyd porting Raymond Toy's fix to CMU CL)
2751 * began to systematize and improve MOP conformance in PCL (thanks to
2752 Nathan Froyd, Gerd Moellman and Pierre Mai):
2753 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
2755 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
2756 ** FINALIZE-INHERITANCE is now called on class finalization;
2757 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
2758 argument precedence order.
2759 * fixed bug 202: The compiler no longer fails on functions whose
2760 derived types contradict their declared type.
2761 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
2762 so it can be non-toplevel.
2763 * The fasl file version number has changed (because of the new
2764 implementation of DEFMACRO).
2765 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
2766 safe code, that any length requirement by their type-specifier
2767 argument is valid. The exceptions to this are described in bug
2769 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
2770 functions now check the types of their inputs as required by ANSI.
2771 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
2772 introduced symbol is DECLAREd to be SPECIAL.
2773 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
2774 * fixed bug: :COUNT argument to sequence functions may be negative
2775 * fixed bug: body of DO-SYMBOLS may contain declarations
2776 * fixed bug: PUSHNEW now evaluates its arguments from left to right
2777 (reported by Paul F. Dietz, fixed by Gerd Moellman)
2778 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
2779 symbol macro only once
2780 * fixed printing of call frame when argument list is unavailable
2781 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
2782 * compiler no longer signals WARNING on unknown keyword
2785 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
2786 * A beta-quality port to the mips architecture running Linux,
2787 based on the old CMUCL backend, has been made. It has been tested
2788 on a big-endian kernel, and works sufficiently well to be able to
2789 rebuild itself; it has not been tested in little-endian mode.
2790 * fixed an inconsistency between gencgc.c and purify.c which made
2791 dumping/loading .core files unreliable
2792 * fixed bug 120a: The compiler now deals correctly with IFs where
2793 the consequent is the same as the alternative, instead of
2794 misderiving the return type. (thanks to Alexey Dejneka)
2795 * fixed bug 113: Logical pathnames are now dumpable (the logical
2796 host is resolved at load-time, throwing an error if it is not
2798 * fixed bug 174: FORMAT's error message is slightly clearer when a
2799 non-printing character is used in a format directive.
2800 * fixed several bugs in compiler checking of type declarations, i.e.
2801 violations of the Python "declarations are assertions" principle
2802 (thanks to Alexey Dejneka)
2803 * fixed several bugs in PCL's error checking (thanks to Gerd
2805 * fixed bug: printing of FILE-ERROR (thanks to Antonio
2807 * fixed bug in compilation of functions as first class values
2808 (thanks to Antonio Martinez-Shotton)
2809 * The compiler's handling TYPE-ERRORs which it can prove will
2810 inevitably happen at runtime has been cleaned up and corrected
2811 in several ways. (thanks to Alexey Dejneka)
2812 * improved argument type checking for various basic arithmetic
2813 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
2814 lavished on them in the past that they can be compiled in many
2815 ways in different special cases
2816 * fixed bug 181: compiler checks validity of user supplied type
2818 * cleaned up code flushing in optimization: Function calls which
2819 should signal errors for safety purposes (e.g. which ANSI says
2820 should signal errors when their arguments are of incorrect type)
2821 are no longer optimized away.
2822 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
2823 * incremented fasl file version number, because changes in the
2824 implementation of sequence functions like COERCE caused
2825 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
2826 in old inline expansions) to become undefined. (Actually these
2827 changes were later undone, so we might very well be binary
2828 compatible with 0.7.7 after all, but leaving the version number
2829 incremented seemed like the simplest and most conservative
2832 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
2833 * An alpha-quality port to the parisc architecture running Linux,
2834 based on the old CMUCL backend, has been made. This, even more so
2835 than the other backends, should be considered still a work in
2836 progress; known problems include that the Linux kernel in 64-bit
2837 mode does not propagate the correct sigcontext structure to
2838 userspace, and consequently SBCL on a parisc64 kernel will not
2840 * fixed bug 189: The compiler now respects NOTINLINE declarations for
2841 functions declared in FLET and LABELS. (I.e. "LET conversion" is
2842 suppressed.) Also now that the compiler is looking at declarations
2843 in the environment, it checks optimization declarations as well,
2844 and suppresses inlining when (> DEBUG SPEED).
2845 * More fixes have been made to treatment of floating point exception
2846 treatment and other Unix signals. In particular, floating point
2847 exceptions no longer cause Bus errors on the SPARC/Linux platform.
2848 * The detection and handling of control stack exhaustion (infinite
2849 or very deeply nested recursion) has changed. Stack exhaustion
2850 detection is now done by write-protecting pages at the OS level
2851 and applies at all optimization settings; when found, a
2852 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
2853 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
2854 be caught using IGNORE-ERRORS.
2855 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
2856 correctly when transforming recursive LABELS functions to LETs.
2857 (thanks to Alexey Dejneka)
2858 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
2859 that are names of constants or global variables.
2860 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
2861 alien routines with docstrings.
2862 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
2863 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
2865 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
2866 (thanks to Eric Marsden)
2867 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
2868 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
2869 * Bug fix: The SPARC backend can now compile functions involving
2870 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
2871 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
2872 to a functions expecting a PATHNAME-DESIGNATOR.
2873 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
2874 lambda lists. (thanks to Alexey Dejneka)
2875 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
2876 functions so that EXPORTing the name of the class doesn't cause
2877 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
2878 to Antonio Martinez for reporting this)
2879 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
2880 constant-folded without failing an assertion. (thanks to Einar
2881 Floystad Dorum for reporting this)
2882 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
2883 types are now dealt with more correctly by the compiler.
2884 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
2885 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
2886 behaviour analogous to RENAME-FILE. This puts its behaviour more
2887 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
2889 * The fasl file version number has changed again. (because of the
2890 bug fix involving the names of PCL MAKE-INSTANCE functions)
2892 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
2893 * bug fix: Floating point exceptions are treated much more
2894 consistently on the x86/Linux and PPC/Linux platforms.
2895 * Array initialization with :INITIAL-ELEMENT is now much faster for
2896 cases when the compiler cannot open code the array creation, but
2897 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
2898 array accesses have also seen a speed increase.
2899 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
2900 specified. (This was at the root of some bad interactions between
2901 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
2903 * bug fix: Internal error arguments for undefined functions are now
2904 computed correctly on the PPC/Linux platform.
2905 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
2906 Raymond Toy's patch for CMU CL)
2907 * Support for the Solaris 9 operating environment has been included
2908 (thanks to Daniel Merritt)
2909 * A very ugly but hopefully complete draft of the missing FFI chapter
2910 of the manual has been created by reformatting the corresponding
2911 CMU CL manual chapter into (currently very ugly and incoherent)
2912 DocBook and bringing it up to date for SBCL behavior. Thus, the
2913 manual is now essentially complete, at least by my extreme
2914 once-and-only-once standards, whereby it's acceptable to refer to
2915 the doc strings of SB-EXT functions as the primary documentation.
2916 * The fasl file version number has changed again, due to cleanup of
2917 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
2918 is no longer a static symbol.)
2920 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
2921 * SBCL now builds with OpenMCL (version 0.12) as the
2922 cross-compilation host; also, more progress has been made toward
2923 bootstrapping under CLISP.
2924 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
2926 * bug 158 fixed: The compiler can now deal with integer loop
2927 increments different from 1; fixing this turned out also to fix
2929 * bug 169 fixed: no more bogus warnings about using lexical bindings
2930 despite the presence of perfectly good SPECIAL declarations (thanks
2931 to David Lichteblau)
2932 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
2933 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
2934 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
2936 * bug 180 fixed: Method combination specifications no longer ignore
2937 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
2938 * bug fix: Structure type predicate functions now check their argument
2939 count as they should.
2940 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
2941 correctly. (thanks to Pierre Mai)
2942 * minor incompatible change: The --noprogrammer option is deprecated
2943 in favor of the new --disable-debugger option, which is very similar.
2944 (The major difference is that it takes effect at a slightly different
2945 time at startup, causing handling of errors in --sysinit and
2946 --userinit files will be affected differently.) The
2947 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
2948 been added to allow this functionality to be controlled from ordinary
2949 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
2950 maintainers, who might want to run non-interactive scripts to
2951 build SBCL cores which will later be used interactively.)
2952 * minor incompatible change: The LOAD function no longer, when given
2953 a wild pathname to load, loads all files matching that pathname.
2954 Instead, an error of type FILE-ERROR is signalled.
2956 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
2957 * bug 147 fixed: The compiler preserves its block link/count
2958 invariants more correctly now so that it doesn't crash. (thanks
2960 * Dynamic loading of object files in OpenBSD is now supported. (thanks
2962 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
2963 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
2964 no-value-for-this-character as NIL (as specified by ANSI).
2965 * HOST-NAMESTRING on physical pathnames now returns a string that is
2966 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
2967 (thanks to Christophe Rhodes)
2968 * The Alpha port handles icache flushing more correctly. (thanks to
2970 * More progress has been made toward bootstrapping under CLISP. (thanks
2971 to Christophe Rhodes)
2972 * The fasl file format has changed again, because dynamic loading
2973 on OpenBSD (which has non-ELF object files) motivated some cleanups
2974 in the way that foreign symbols are transformed and passed around.
2975 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
2976 is no longer treated as whitespace by the reader, but instead as
2977 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
2978 |A
\7fB|, instead of A as it used to.
2980 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
2981 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
2982 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
2983 * SBCL now runs on the PPC archtiecture under Linux. It actually did
2984 this as of 0.7.1.45, but was left out of the previous news section
2985 (thanks to Dan Barlow)
2986 * SBCL now runs on the Solaris operating system on SPARC architectures
2987 (thanks to Christophe Rhodes's port of the CMUCL runtime)
2988 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
2989 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
2990 * SPARC backend cleanups, allowing builds of cores optimized for V8
2991 and V9 SPARCS, and also emission of code targeted to a particular
2992 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
2994 * SBCL is closer to bootstrapping under CLISP, thanks to various
2995 fixes by Christophe Rhodes.
2996 * The fasl file format has changed again, to allow the compiler's
2997 INFO database to support symbol macros.
2998 * The user manual (in doc/) is formatted into HTML more nicely.
2999 (thanks to coreythomas)
3000 * The system is smarter about SUBTYPEP relationships, especially
3001 those involving NOT types (including types such as ATOM which are
3002 represented internally using NOT types). Thus SUBTYPEP is less
3003 likely to return (VALUES NIL NIL) in general, and in particular
3004 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
3006 * The fasl file format has changed again, because the internal
3007 representation of types now includes a new slot to support the new
3008 SUBTYPEP-of-NOT-types logic.
3009 * (not a change in the main branch of SBCL, but a related prototype
3010 which can hopefully be merged into the main branch of SBCL in the
3011 future:) Brian Spilsbury has produced a Unicode-enabled variant of
3012 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
3013 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
3014 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
3015 dispatch macro character combinations. (thanks to Alexey Dejneka)
3016 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
3017 that superficially look like logical namestrings correctly.
3018 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
3020 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
3021 default supplied-p) for &optional and &key arguments. (thanks to
3024 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
3025 * incompatible change: The compiler is now less aggressive about
3026 tail call optimization, doing it only when (> SPACE DEBUG) or
3027 (> SPEED DEBUG). (This is an incompatible change because there are
3028 programs which relied on the old CMU-CL-style behavior to optimize
3029 away their unbounded recursion which will now die of stack overflow.)
3030 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
3031 for non-GENCGC systems has been increased to 20M (since that
3032 seems much closer to the likely performance optimum for modern
3033 systems than the old 4M value was)
3034 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
3035 and *DEBUG-PRINT-LEVEL*
3036 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
3037 of CMU CL's support for SPARC, and various endianness and other
3038 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
3039 * new syntactic sugar for the Unix command line: --load foo.bar is now
3040 an alternate notation for --eval '(load "foo.bar")'.
3042 ** The system now detects stack overflow and handles it gracefully,
3043 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
3044 optimization settings. (This is a good thing in general, and
3045 its introduction in this version should be particularly timely
3046 for anyone whose code fails because of suppression of tail
3048 ** The system now hunts for the C variable "environ" in a more
3049 devious way, to avoid segfaults when the C library version differs
3050 between compile time and run time. (thanks to Christophe Rhodes)
3051 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
3052 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
3053 ** The compiler no longer issues bogus style warnings for undefined
3054 classes in the same source file as the DEFCLASSes which defined
3055 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
3057 ** fixes in CONDITION class precedence list for undefined function
3058 errors (thanks to Alexei Dejneka)
3059 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
3060 correctly. (thanks to Dan Barlow)
3061 ** portability fixes aiming at bootstrapping under CLISP (thanks
3062 to Dave McDonald and Christophe Rhodes)
3063 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
3064 ** fixes in type translation and and type inference (thanks to
3066 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
3067 ** various fixes in the new ports (thanks to Dan Barlow)
3068 * several changes related to debugging:
3069 ** suppression of tail recursion, as noted above
3070 ** stack overflow detection, as noted above
3071 ** The default implementation of TRACE has changed. :ENCAPSULATE T
3072 is now the default. (For some time encapsulation has been more
3073 reliable than the breakpoint-based :ENCAPSULATE NIL
3074 implementation, at least on X86 systems; and I just noticed that
3075 encapsulation also seems closer to the spirit of the ANSI
3078 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
3080 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
3081 up properly again. (There was a packaging bug in 0.7.0 which
3082 left their definitions in SB-SYS::LOAD-FOREIGN and
3083 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
3084 vital for most things which interface to C-level interfaces,
3085 like extensions working with sockets or databases or
3086 Perl-compatible regexes or whatever, and the need to fix
3087 this bug is the main reason that 0.7.1 was released so
3089 ** DEFGENERIC is now choosier about the methods it redefines, so that
3090 reLOADing a previously-LOADed file containing DEFGENERICs does
3091 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
3092 cycle now works as it should. (thanks to Alexey Dejneka)
3093 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
3094 fixed by Christophe Rhodes. (He actually submitted this patch
3095 months ago, and I delayed until after 0.7.0.)
3096 ** Bug 111 (internal compiler confusion about runtime checks on
3097 FUNCTION types) was fixed by Alexey Dejneka.
3098 * Some internal cleanups (getting rid of variables which aren't
3099 needed now that the byte interpreter is gone) caused the fasl
3100 file format number to change again.
3102 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
3103 * major incompatible change: The default fasl file extension, i.e. the
3104 default extension for files produced by COMPILE-FILE, has changed
3105 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
3107 ** There are many changes in the implementation of the compiler.
3108 SBCL is now essentially a compiler-only implementation of ANSI
3109 Common Lisp. EVAL still "interprets" a few special cases, but
3110 almost all the interesting cases are handled by creating
3111 a LAMBDA expression, calling COMPILE on it, then calling
3112 FUNCALL on the result.
3113 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
3114 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
3115 Since the code is newer, there might still be some new bugs
3116 (though not as many as before Martin Atzmueller's fixes:-). But
3117 the new code is substantially simpler and clearer, and hopefully
3118 any remaining bugs will be simpler, less fundamental, and more
3119 fixable then the bugs in the old code.
3120 ** The revised compiler is still a little unsteady on its feet.
3122 *** The debugging information it produces (particularly the names
3123 of FUNCTION objects) is sometimes much less useful than what
3124 the old compiler produced.
3125 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
3126 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
3127 within a MACROLET) has been temporarily weakened.
3128 ** There are new compiler optimizations for various functions:
3129 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
3130 FIND-IF-NOT, POSITION-IF-NOT, and FILL
3131 *** the math functions TRUNCATE, FLOOR, and CEILING
3132 *** the function-of-all-trades COERCE
3133 Mostly these should be transparent, but there's one
3134 potentially-annoying problem (bug 117): when the compiler
3135 inline-expands a function and does type analysis on the result,
3136 it can create control paths which have type mismatches, and
3137 when it can't prove that those control paths aren't taken,
3138 it will issue WARNINGs about the type mismatches. This is
3139 a particular problem in practice for the new sequence functions.
3140 It's not clear how this should be fixed, and for now, a
3141 workaround is given in the entry for 117 in the BUGS file.
3142 ** (Because of the interaction between the two previous items --
3143 occasional inlining problems and new inline expansions -- some
3144 of the new sequence function optimizations won't really kick in
3145 completely until debugging information, and then inlining, are
3146 straightened out in some future version.)
3147 * minor incompatible changes:
3148 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
3149 DIRECTORY no longer implicitly promotes NIL slots of its
3150 pathname argument to :WILD. In particular, when you ask for the
3151 contents of a directory (which you used to be able to do without
3152 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
3153 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
3154 ** changes in behavior that ANSI explicitly defines to be
3155 implementation dependent:
3156 *** The new compiler-only implementation still conforms with ANSI,
3157 but acts a little different than before. Besides the obvious
3158 changes in performance tradeoffs (that the cost per form passed
3159 to EVAL has gone up, and the cost per form executed by EVAL
3160 has gone down), the behavior of the system changes a little
3161 because there are no longer any interpreted function objects.
3162 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
3163 e.g. doing COMPILE on the output of interactive DEFUN is
3165 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
3167 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
3168 has changed from (:CL) to NIL.
3169 *** The CHAR-NAME of unprintable ASCII characters which, unlike
3170 e.g. #\Newline and #\Tab, don't have names specified in the
3171 ANSI Common Lisp standard, is now based on their ASCII symbolic
3172 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
3173 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
3174 are no longer used for output.
3175 ** changes in internal implementation constants:
3176 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
3177 4 million. (If your application spends a lot of time GCing and
3178 you have a lot of RAM, you might want to experiment with
3179 increasing it even more.)
3180 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
3181 However, almost all old code should still continue to work without
3182 immediate update, as SB-C-CALL is now a (deprecated) nickname
3184 ** Old operator names in the style DEF-FOO are now deprecated in
3185 favor of new corresponding names DEFINE-FOO, for consistency with
3186 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
3187 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
3188 internal symbols, but a few supported extensions like
3189 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
3190 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
3191 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
3192 etc. as you get deeper into recursive calls to the debugger
3193 command loop, instead of the old "5]", "5]]", "5]]]"
3194 sequence. (I was motivated to do this when squabbles between
3195 ILISP and SBCL left me very deeply nested in the debugger. In the
3196 short term, this change will probably provoke more ILISP/SBCL
3197 squabbles, but hopefully it will be an improvement in the long run.)
3198 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
3199 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
3200 function, since declaiming return types involving aliens is
3201 (1) annoyingly messy to do by hand and (2) vital to efficient
3202 compilation of code which calls such functions.
3203 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
3204 longer reexported by the SB-EXT package. They're solely useful
3205 for alien code, so it seems more logical that you should get
3206 them from the SB-ALIEN package, not in SB-EXT.
3207 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
3208 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
3209 features. Instead, the code that they used to control is always
3210 built into the system.
3211 * many other bug fixes
3212 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
3213 advantage of the new EVAL-WHEN stuff and to clean them up in
3214 general, and they are now more ANSI-compliant in a number of
3215 ways. Martin Atzmueller is responsible for a lot of this.
3216 ** Besides the cleanups discussed above, Martin Atzmueller fixed
3218 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
3219 *** correct ERROR type for various file operations
3220 *** some fixes for Lisp streams
3221 *** DEFMETHOD syntax checking
3222 *** changing old weird representation of debug information as
3223 strings (which, among their other deficiencies, don't transform
3224 correctly when you rename packages, and don't change their
3225 print representation when you change things like *PACKAGE*
3226 and *PRINT-LENGTH*) to symbols and lists of symbols
3227 He also made several improvements and fixed several bugs in DESCRIBE.
3228 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
3230 *** misbehavior of WRITE-STRING/WRITE-LINE
3231 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
3232 and several other LOOP problems as well
3233 *** DIRECTORY when similar filenames are present
3234 *** DEFGENERIC with :METHOD options
3235 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
3236 *** bug in the optimization of ARRAY-ELEMENT-TYPE
3237 *** argument ordering in FIND with :TEST option
3238 *** mishandled package designator argument in APROPOS-LIST
3239 *** various problems in the backquote readmacro
3240 *** a bug in APROPOS
3241 *** probably some others that I'm not describing very well here,
3242 since the CVS log documents them by reference to sbcl-devel
3243 messages, and the SourceForge archives aren't working well.:-(
3244 ** Dan Barlow improved the Alpha port (and is making progress on the
3245 PPC port, for those of you who think different).
3246 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
3247 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
3248 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
3249 continues to work on the SPARC port (for those of you in a position
3250 to look down upon our little PC-compatible boxes from a great height).
3251 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
3252 and uses that copy, rather than the current dynamic value, when
3253 it's trying to decide whether to truncate output. Thus e.g.
3254 (let ((*print-lines* 50))
3255 (pprint-logical-block (stream nil)
3257 (let ((*print-lines* 8))
3258 (print (aref possiblybigthings i) stream)))))
3259 should now truncate the logical block only at 50 lines, instead of
3260 often truncating it at 8 lines, as it did before.
3261 * The doc/cmucl/ directory, containing old CMU CL documentation
3262 from the time of the fork, is no longer part of the base system.
3263 SourceForge has shut down its anonymous FTP service, and with it
3264 my original plan for distributing the old CMU CL documentation
3265 there. For now, if you need these files you can download an old
3266 SBCL source release and extract them from it.
3267 * The fasl file version number changed again, for dozens of reasons,
3268 some of which are apparent above.
3270 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
3271 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
3272 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
3273 patch, so that DISASSEMBLE output is much nicer.
3274 * The code in the SB-PROFILE package now seems reasonably stable.
3275 I still haven't decided what the final interface should look like
3276 (I'd like PROFILE to interact cleanly with TRACE, since both
3277 facilities use function encapsulation) but if you have a need
3278 for profiling now, you can probably use it successfully with
3279 the current CMU-CL-style interface.
3280 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
3281 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
3282 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
3283 link now returns the dangling link itself, and for similar
3284 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
3285 link itself. (In these cases the old code signalled an error and
3286 looped endlessly, respectively.) Thus, DIRECTORY now works even
3287 in the presence of dangling and cyclic symbolic links.
3288 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
3289 is now a supported extension again, since the consensus on
3290 sbcl-devel was that it can be useful for ordinary development
3291 work, not just for debugging SBCL itself.
3292 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
3293 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
3294 that currently-defined functions might be redefined later with
3295 different return types.
3296 * Hash tables can be printed readably, as inspired by CMU CL code
3297 of Eric Marsden and SBCL code of Martin Atzmueller.
3298 * better error handling in CLOS method combination, thanks to
3299 Martin Atzmueller porting Pierre Mai's CMU CL patches
3300 * more overflow fixes for >16Mbyte I/O buffers
3301 * A bug in READ has been fixed, so that now a single Ctrl-D
3302 character suffices to cause end-of-file on character streams.
3303 In particular, now you only need one Ctrl-D at the command
3304 line (not two) to exit SBCL.
3305 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
3307 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
3308 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
3309 does the right thing.
3310 * The implementation of some type tests, especially for CONDITION
3311 types, is now tidier and maybe faster, due to CMU CL code
3312 originally by Douglas Crosher, ported by Martin Atzmueller.
3313 * Some math functions have been fixed, and there are new
3314 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
3315 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
3316 * (There are also some new optimizers in contrib/*-extras.lisp. Those
3317 aren't built into sbcl-0.6.13, but are a sneak preview of what's
3318 likely to be built into sbcl-0.7.0.)
3319 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
3320 CL, ported to SBCL by Martin Atzmueller)
3321 * DESCRIBE now gives more information in some cases. (Pierre Mai's
3322 patch to CMU CL, ported to SBCL by Martin Atzmueller)
3323 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
3324 * There's a new slam.sh hack to shorten the edit/compile/debug
3325 cycle for low-level changes to SBCL itself, and a new
3326 :SB-AFTER-XC-CORE target feature to control the generation of
3327 the after-xc.core file needed by slam.sh.
3328 * minor incompatible change: The ENTRY-POINTS &KEY argument to
3329 COMPILE-FILE is no longer supported, so that now every function
3330 gets an entry point, so that block compilation looks a little
3331 more like the plain vanilla ANSI section 3.2.2.3 scheme.
3332 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
3333 returns the number of bytes consed since the system started,
3334 rather than the number consed since the first time the function
3335 was called. (The new definition parallels ANSI functions like
3336 CL:GET-INTERNAL-RUN-TIME.)
3337 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
3338 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
3339 supported. Now DIRECTORY always does the abstract Common-Lisp-y
3340 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
3341 * Fasl file version numbers are now independent of the target CPU,
3342 since historically most system changes which required version
3343 number changes have affected all CPUs equally. Similarly,
3344 the byte fasl file version is now equal to the ordinary
3347 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
3348 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
3349 is no longer recognized. I apologize for this, because it was
3350 listed in SB-EXT as a supported extension, but I found that
3351 its existing behavior was poorly specified, as well as incorrectly
3352 specified, and it looked like too much of a mess to straighten it
3353 out. I have enough on my hands trying to get ANSI stuff to work..
3354 * many patches ported from CMU CL by Martin Atzmueller, with
3355 half a dozen bug fixes in pretty-printing and the debugger, and
3356 half a dozen others elsewhere
3357 * fixed bug 13: Floating point infinities are now supported again.
3358 They might still be a little bit flaky, but thanks to bug reports
3359 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
3360 as flaky as they were.
3361 * The --noprogrammer command line option is now supported. (Its
3362 behavior is slightly different in detail from what the old man
3363 page claimed it would do, but it's still appropriate under the
3364 same circumstances that the man page talks about.)
3365 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
3366 are now supported, and enabled by default. Thus, the compiler can
3367 handle many floating point and complex operations much less
3368 inefficiently. (Thus e.g. you can implement a complex FFT
3370 * The compiler now detects type mismatches between DECLAIM FTYPE
3371 and DEFUN better, and implements CHECK-TYPE more correctly, and
3372 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
3373 thanks to patches from Martin Atzmueller.
3374 * various fixes to make the cross-compiler more portable to
3375 ANSI-conforming-but-different cross-compilation hosts (notably
3376 Lispworks for Windows, following bug reports from Arthur Lemmens)
3377 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
3378 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
3379 fixed thanks to Pierre Mai's CMU CL patches.
3380 * fixes to keep the system from overflowing internal counters when
3381 it tries to use i/o buffers larger than 16M bytes
3382 * fixed bug 45a: Various internal functions required to support
3383 complex special functions have been merged from CMU CL sources.
3384 (When I was first setting up SBCL, I misunderstood a compile-time
3385 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
3386 * improved support for type intersection and union, fixing bug 12
3387 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
3388 more obscure bugs as well
3389 * some steps toward byte-compiling non-performance-critical
3390 parts of the system, courtesy of patches from Martin Atzmueller
3391 * Christophe Rhodes has made some debian packages of sbcl at
3392 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
3393 From his sbcl-devel e-mail of 2001-04-08 they're not completely
3394 stable, but are nonetheless usable. When he's ready, I'd be happy
3395 to add them to the SourceForge "File Releases" section. (And if
3396 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
3397 * new fasl file format version number (because of changes in
3398 internal representation of (OR ..) types to accommodate the new
3399 support for (AND ..) types, among other things)
3401 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
3402 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
3404 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
3406 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
3407 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
3408 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
3409 * DESCRIBE now works on structure objects again.
3410 * Most function call argument type mismatches are now handled as
3411 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
3412 know whether the function will be redefined before the call is
3413 executed. (The compiler could flag local calls with full WARNINGs,
3414 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
3415 it doesn't keep track of enough information to know whether calls
3416 are local in this sense.)
3417 * Compiler output is now more verbose, with messages truncated
3418 later than before. (There should be some supported way for users
3419 to override the default verbosity, but I haven't decided how to
3420 provide it yet, so this behavior is still controlled by the internal
3421 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
3422 src/compiler/ir1util.lisp.)
3423 * Fasl file format version numbers have increased again, because
3424 support for the Gray streams extension changes the layout of the
3425 system's STREAM objects.
3426 * The Gray subclassable streams extension now works, thanks to a
3427 patch from Martin Atzmueller.
3428 * The full LOAD-FOREIGN extension (not just the primitive
3429 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
3430 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
3431 but like most other programs, it defaults to copying the Unix
3432 environment from the original process instead of starting the
3433 new process in an empty environment.
3434 * Extensions which manipulate the Unix environment now support
3435 an :ENVIRONMENT keyword option which doesn't smash case or
3436 do other bad things. The CMU-CL-style :ENV option is retained
3437 for porting convenience.
3438 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
3439 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
3441 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
3443 * A patch from Martin Atzmueller seems to have solved the SIGINT
3444 problem, and as far as we know, signal-handling now works cleanly.
3445 (If you find any new bugs, please report them!)
3446 * The system no longer defaults Lisp source file names to types
3447 ".l", ".cl", or ".lsp", but only to ".lisp".
3448 * The compiler no longer uses special default file extensions for
3449 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
3450 seems to expect a single default extension for all compiled code,
3451 and there's no compelling reason to try to stretch the standard
3452 to allow two different extensions.) Instead, byte-compiled files
3453 default to the same extension as native-compiled files.
3454 * Fasl file format version numbers have increased again, because
3455 a rearrangement of internal implementation packages made some
3456 dumped symbols in old fasl files unreadable in new cores.
3457 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
3458 many fewer weird special cases.
3459 * Bug #17 (differing COMPILE-FILE behavior between logical and
3460 physical pathnames) has been fixed, and some related misbehavior too,
3461 thanks to a patch from Martin Atzmueller.
3462 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
3463 by Tim Moore, ported to SBCL by Martin Atzmueller.
3464 * Martin Atzmueller fixed several filesystem-related problems,
3465 including bug #36, in part by porting CMU CL patches, which were
3466 written in part by Paul Werkowski.
3467 * More compiler warnings in src/runtime/ are gone, thanks to
3468 more patches from Martin Atzmueller.
3469 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
3472 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
3474 * DESCRIBE now works on CONDITION objects.
3475 * The debugger now handles errors which arise when trying to print
3476 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
3478 * The build system now uses an additional file, customize-target-features.lisp,
3479 to allow local modifications to the target *FEATURES* list. (The point of
3480 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
3481 debugging features enabled, without having to worry about propagating it
3482 into everyone's system when I do a "cvs update".) When no
3483 customize-target-features.lisp file exists, the target *FEATURES* list
3484 should be constructed the same way as before.
3485 * fixed bugs in DEFCONSTANT ANSI-compatibility:
3486 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
3487 warn about behavior which is undefined under the ANSI spec. Note: This
3488 is specified by ANSI, but it's not very popular with programmers.
3489 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
3490 macro in the SBCL sources for an example of a workaround which you
3491 might use to make portable ANSI-standard code which does what you want.
3492 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
3493 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
3494 when it's used as a non-toplevel form. (This is required in order
3495 to implement the DEFCONSTANT-EQX macro.)
3496 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
3497 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
3498 funny things, due to bugs in the implementation of EVAL-WHEN
3499 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
3500 non-toplevel DEFCONSTANTs are uncommon.)
3501 * The core file version number and fasl file version number have been
3502 incremented, because the old noncompliant DEFCONSTANT behavior involved
3503 calling functions which no longer exist, and because I also took the
3504 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
3505 * fixed bug 1 (error handling before read-eval-print loop starts), and
3506 redid debugger restarts and related debugger commands somewhat while
3508 ** The QUIT debugger command is gone, since it did something
3509 rather different than the SB-EXT:QUIT command, and since it never
3510 worked properly outside the main toplevel read/eval/print loop.
3511 Invoking the new TOPLEVEL restart provides the same functionality.
3512 ** The GO debugger command is also gone, since you can just invoke
3513 the CONTINUE restart directly instead.
3514 ** The TOP debugger command is also gone, since it's redundant with the
3515 FRAME 0 command, and since it interfered with abbreviations for the
3517 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
3519 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
3520 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
3521 some porting work by Martin Atzmueller)
3522 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
3523 with a boatload of patches which he ported to SBCL. Now that those
3525 ** The system tries to make sure that its low-priority messages
3526 are prefixed by semicolons, to help people who like to use
3527 syntax highlighting in their ILISP buffer. (This patch
3528 was originally due to Raymond Toy.)
3529 ** The system now optimizes INTEGER-LENGTH better, thanks to more
3530 patches originally written by Raymond Toy.
3531 ** The compiler understands coercion between single-value and
3532 multiple-VALUES type expressions better, getting rid of some very
3533 weird behavior, thanks to patches originally by Robert MacLachlan
3534 and Douglas Crosher.
3535 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
3536 lambda lists, thanks to a patch originally by Pierre Mai.
3537 ** The system no longer bogusly warns about "abbreviated type
3539 ** The compiler gets less confused by inlining and RETURN-FROM,
3540 thanks to some patches originally by Tim Moore.
3541 ** The system no longer hangs when dumping circular lists to fasl
3542 files, thanks to a patch originally from Douglas Crosher.
3543 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
3544 undefined function error.
3545 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
3546 in structure slot initforms) for now, documented workaround instead:-|
3547 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
3548 * fixed bug 5: added stubs for various Gray stream functions called
3549 in the not-a-CL:STREAM case, so that even when Gray streams aren't
3550 installed, at least appropriate type errors are generated
3551 * fixed bug 8: better reporting of various PROGRAM-ERRORs
3552 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
3553 consistently in DEFMETHOD forms.
3554 * removed bug 21 from BUGS, since Martin Atzmueller points out that
3555 it doesn't seem to affect SBCL after all
3556 * The C runtime system now builds with better optimization and many
3557 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
3559 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
3561 * The system is now under CVS at SourceForge (instead of the
3562 CVS repository on my home machine).
3563 * The new signal handling code has been tweaked to treat register
3564 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
3565 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
3566 downstream, e.g. in debug-int.lisp, has implicit dependencies
3567 on the unsignedness of integer representation of machine words,
3568 and that caused the system to bomb out with infinite regress
3569 when trying to recover from type errors involving signed values,
3570 e.g. (BUTLAST '(1 2 3) -1).)
3571 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
3572 (This was one of the bugs Peter Van Eynde reported back in July.)
3573 * The system now uses code inspired by Colin Walters' O(N)
3574 implementation of MAP (from the cmucl-imp@cons.org mailing
3575 list, 2 September 2000) when it can't use a DEFTRANSFORM to
3576 inline the MAP operation, and there is more than one
3577 sequence argument to the MAP call (so that it can't just
3578 do ETYPECASE once and for all based on the type of the
3579 single sequence argument). (The old non-inline implementation
3580 of the general M-argument sequence-of-length-N case required
3581 O(M*N*N) time when any of the sequence arguments were LISTs.)
3582 * The QUIT :UNIX-CODE keyword argument has been renamed to
3583 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
3584 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
3586 * Raymond Wiker's patches to port dynamic loading from Linux to
3587 FreeBSD have been added.
3588 * The BUGS file is now more nearly up to date, thanks in large part
3589 to Martin Atzmueller's review of it.
3590 * The debugger now flushes standard output streams before it begins
3591 its output ("debugger invoked" and so forth).
3592 * The core version number and fasl file version number have both
3593 been incremented, because of incompatible changes in the layout
3595 * FINISH-OUTPUT is now called more consistently on QUIT. (It
3596 used to not be called for a saved Lisp image.)
3597 * Martin Atzmueller's version of a patch to fix a compiler crash,
3598 as posted on sbcl-devel 13 September 2000, has been installed.
3599 * Instead of installing Martin Atzmueller's patch for the
3600 compiler transform for SUBSEQ, I deleted the compiler transform,
3601 and transforms for some similar consing operations.
3602 * A bug in signal handling which kept TRACE from working on OpenBSD
3604 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
3605 away by constant folding
3606 * The system now defines its address space constants in one place
3607 (in the Lisp sources), and propagates them automatically elsewhere
3608 (through GENESIS and the sbcl.h file). Therefore, patching the
3609 address map is less unnecessarily tedious and error-prone. The
3610 Lisp names of address space constants have also been systematized.
3611 * CVS tags like dollar-Header-dollar have been removed from
3612 the sources, because they have never saved me trouble and
3613 they've been source of trouble working with patches and other
3614 diff-related operations.
3615 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
3616 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
3618 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
3620 * The system has been ported to OpenBSD.
3621 * The system now compiles with a simple "sh make.sh" on the systems
3622 that it's supported on. I.e., now you no longer need to tweak
3623 text in the target-features.lisp-expr and symlinks in src/runtime/
3624 by hand, the make.sh takes care of it for you.
3625 * The system is no longer so grossly inefficient when compiling code
3626 involving vectors implemented as general (not simple) vectors (VECTOR T),
3627 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
3628 which dares to use the various sequence functions on non-simple
3629 vectors, takes less of a performance hit.
3630 * There is now a primitive type predicate VECTOR-T-P
3631 to test for the (VECTOR T) type, so that e.g.
3632 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
3633 can now be compiled with some semblance of efficiency. (The old code
3634 turned the type declaration into a full call to %TYPEP at runtime!)
3635 * AREF on (VECTOR T) is still not fast, since it's still compiled
3636 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
3637 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
3638 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
3639 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
3640 without making full calls to SUBTYPEP at runtime.
3641 (Some analogous efficiency issues for non-simple vectors specialized to
3642 element types other than T, or for non-simple multidimensional arrays,
3643 have not been addressed. They could almost certainly be handled the
3644 same way if anyone is motivated to do so.)
3645 * The changes in array handling break binary compatibility, so
3646 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
3647 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
3648 instead of (VALUES T T).
3649 * By following the instructions that Dan Barlow posted to sbcl-devel
3650 on 2 July 2000, I was able to enable primitive dynamic object
3651 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
3652 functionality is not implemented (since it calls ld to resolve
3653 library references automatically, requiring RUN-PROGRAM for its
3654 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
3655 try to resolve library references) is now supported.
3656 * The system now flushes the standard output streams when it terminates,
3657 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
3658 them at several other probably-convenient times, e.g. in each pass of
3659 the toplevel read-eval-print loop, and after evaluating a form given
3660 as an "--eval" command-line option. (These changes were motivated by a
3661 discussion of stream flushing issues on cmucl-imp in August 2000.)
3662 * The source transform for TYPEP of array types no longer assumes
3663 that an array whose element type is a not-yet-defined type
3664 is implemented as an array of T, but instead punts, so that the
3665 type will be interpreted at runtime.
3666 * There is now some support for cross-compiling in make.sh: each of
3667 the phases of make.sh has its own script. (This should be transparent
3668 to people doing ordinary, non-cross-compile builds.)
3669 * Since my laptop doesn't have hundreds of megabytes of memory like
3670 my desktop machine, I became more motivated to do some items on
3671 my to-do list in order to reduce the size of the system a little:
3672 ** Arrange for various needed-only-at-cold-init things to be
3673 uninterned after cold init. To support this, those things have
3674 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
3675 symbols with such names are now uninterned after cold init).
3676 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
3677 fasl files for cold load.
3678 ** Remove the old compiler structure pooling code (which used to
3679 be conditional on the target feature :SB-ALLOC) completely.
3680 ** Redo the representation of some data in cold init to be more compact.
3681 (I also looked into supporting byte compiled code at bootstrap time,
3682 which would probably reduce the size of the system a lot, but that
3683 looked too complicated, so I punted for now.)
3684 * The maximum signal nesting depth in the src/runtime/ support code has
3685 been reduced from 4096 to 256. (I don't know any reason for the very
3686 large old value. If the new smaller value turns out to break something,
3687 I'll probably just bump it back up.)
3688 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
3690 * Many, many bugs reported by Peter Van Eynde have been added to
3691 the BUGS list; some have even been fixed.
3692 * While enabling dynamic object file loading, I tried to make the
3693 code easier to understand, renaming various functions and variables
3694 with less ambiguous names, and changing some function calling
3695 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
3696 * While trying to figure out how to do the OpenBSD port, I tried to
3697 clean up some of the code in src/runtime/. In particular, I dropped
3698 support for non-POSIX signal handling, added various comments,
3699 tweaked the code to reduce the number of compilation warnings, and
3700 renamed some files to increase consistency.
3701 * To support the new automatic configuration functionality in make.sh,
3702 the source file target-features.lisp-expr has been replaced with the
3703 source file base-target-features.lisp-expr and the machine-generated
3704 file local-target-features.lisp-expr.
3705 * fixed a stupid quoting error in make.sh so that using CMU CL
3706 "lisp -batch" as cross-compilation host works again
3708 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
3710 * DESCRIBE no longer tries to call itself recursively to describe
3711 bound/fbound values, so that it no longer fails on symbols which are
3712 bound to themselves (like keywords, T, and NIL).
3713 * DESCRIBE now works on generic functions.
3714 * The printer now prints less-screwed-up representations of closures
3715 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
3716 * A private symbol is used instead of the :EMPTY keyword previously
3717 used to mark empty slots in hash tables. Thus
3718 (DEFVAR *HT* (MAKE-HASH-TABLE))
3719 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
3720 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
3721 now does what ANSI says that it should. (You can still get
3722 similar noncompliant behavior if bang on the hash table
3723 implementation with all the symbols you get back from
3724 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
3725 This breaks binary compatibility, since tests for equality to
3726 :EMPTY are wired into things like the macroexpansion of
3727 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
3729 * There's now a minimal placeholder implementation for CL:STEP,
3730 as required by ANSI.
3731 * An obscure bug in the interaction of the normal compiler, the byte
3732 compiler, inlining, and structure predicates has been patched
3733 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
3734 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
3736 * Missing ordinary arguments in a macro call are now detected even
3737 when the macro lambda list contains &KEY or &REST.
3738 * The debugger no longer complains about encountering the top of the
3739 stack when you type "FRAME 0" to explicitly instruct it to go to
3740 the top of the stack. And it now prints the frame you request even
3741 if it's the current frame (instead of saying "You are here.").
3742 * As specified by ANSI, the system now always prints keywords
3743 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
3745 * The default initial SIZE of HASH-TABLEs is now smaller.
3746 * Type information from CLOS class dispatch is now propagated
3747 into DEFMETHOD bodies, so that e.g.
3748 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3750 is now basically equivalent to
3751 (DEFMETHOD FOO ((X SINGLE-FLOAT))
3752 (DECLARE (TYPE SINGLE-FLOAT X))
3754 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
3755 operation, without having to do run-time type dispatch.
3756 * The macroexpansion of DEFMETHOD has been tweaked so that it has
3757 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
3758 * Since I don't seem to be making big file reorganizations very often
3759 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
3760 is overflowing my ability to conveniently back them up), I've finally
3761 checked the system into CVS. (The CVS repository is on my home system,
3762 not at SourceForge -- putting it on SourceForge might come later.)
3763 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
3764 high-level GC-NOTIFY-FOO functions send their output. (There's
3765 still very little control of where low-level verbose GC functions
3766 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
3767 less than it used to -- the GC-NOTIFY-FOO functions are now under
3768 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
3769 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
3770 in only one place in the source code, and propagates it automatically
3771 everywhere that it's needed. Thus e.g. when I bump the version from
3772 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
3773 * The C source files now include boilerplate legalese and documentation
3774 at the head of each file (just as the Lisp source files already did).
3775 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
3776 to his page will be replaced with a link to his new CLiki service.
3778 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
3780 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
3781 * The build process now looks for GNU make under the default name "gmake",
3782 instead of "make" as it used to. If GNU make is not available as "gmake"
3783 on your system, you can change this default behavior by setting the
3784 GNUMAKE environment variable.
3785 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
3786 can build without error under CMU CL.
3788 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
3790 * There is now a partial SBCL user manual (with some new text and some
3791 text cribbed from the CMU CL manual).
3792 * The beginnings of a profiler have been added (starting with the
3793 CMU CL profiler and simplifying and cleaning up). Eventually the
3794 main interface should be through the TRACE macro, but for now,
3795 it's still accessed through vaguely CMU-CL-style functions and macros
3796 exported from the package SB-PROFILE.
3797 * Some problems left over from porting CMU CL to the new
3798 cross-compilation bootstrap process have been cleaned up:
3799 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
3800 instead of SB!XC:DEFMACRO, compounded by an oversight on my
3801 part when getting rid of the compiler *BACKEND* stuff.)
3802 ** The value of *NULL-TYPE* was screwed up, because it was
3803 being initialized before the type system knew the final
3804 definition of the 'NULL type. This screwed up several key
3805 optimizations in the compiler, causing inefficiency in all sorts
3806 of places. (I found it because I wanted to understand why
3807 GET-INTERNAL-RUN-TIME was consing.)
3808 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
3809 PROCLAIM FTYPE information. Unfortunately this broke binary
3810 compatibility again, since now the forms output by DEFGENERIC
3811 to refer to functions which didn't exist in 0.6.3.
3812 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
3813 can use the new (as of 0.6.3) transform for SOME into MAP into
3815 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
3816 values to (INTEGER 0 1000000), so that the time code will no longer
3817 occasionally get blown up by Linux returning 1000000 microseconds
3818 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
3819 its output conform to the ANSI spec. (Alas, this makes its output
3820 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
3821 * A full call to MAP NIL with a single sequence argument no longer conses.
3822 * fixes to problems pointed out by Martin Atzmueller:
3823 * The manual page no longer talks about multiprocessing as though
3824 it were currently supported.
3825 * The ILISP support patches have been removed from the distribution,
3826 because as of version 5.10.1, ILISP now supports SBCL without us
3827 having to maintain patches.
3828 * added a modified version of Raymond Toy's recent CMU CL patch for
3829 EQUALP comparison of HASH-TABLE
3831 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
3833 * The system still can't cross-compile itself with
3834 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
3835 entails), but at least it can compile more of itself that way
3836 than it used to be able to, and various buglets which were uncovered
3837 by trying to cross-compile itself that way have now been fixed.
3838 * This release breaks binary compatibility again. This time
3839 at least I've incremented the FASL file format version to 2, so that the
3840 problem can be detected reliably instead of just causing weird errors.
3841 * various new style warnings:
3842 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
3843 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
3844 ** using the lexical binding of a variable named in the *FOO* style
3845 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
3846 as specified by ANSI.
3847 * *RANDOM-STATE* is no longer automatically initialized from
3848 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
3849 default behavior of the system is to repeat its behavior every time
3850 it's run. If you'd like to change this behavior, you can always
3851 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
3852 old convention there was no comparably easy way to get the system to
3853 repeat its behavior every time it was run.
3854 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
3855 FTYPE declarations has been removed, in favor of their ANSI
3856 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
3857 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
3858 the types of their sequence arguments can be determined at compile time.
3859 This is done through a new open code expansion for MAP which eliminates
3860 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
3861 argument types can be determined at compile time.
3862 * The optimizer now transforms COERCE into an identity operation when it
3863 can prove that the coerced object is already of the correct type. (This
3864 can be a win for machine generated code, including the output of other
3865 optimization transforms, such as the MAP transform above.)
3866 * Credit information has been moved from source file headers into CREDITS.
3867 * Source file headers have been made more standard.
3868 * The CASE macro now compiles without complaining even when it has
3871 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
3873 * (Note that the way that the PCL macroexpansions were rewritten
3874 to accommodate the change in DEFGENERIC below breaks binary
3875 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
3876 not run under sbcl-0.6.2. Once we get out of alpha releases,
3877 i.e. hit release 1.0.0, we'll probably try to maintain binary
3878 compatibility between maintenance releases, e.g. between sbcl-1.4.3
3879 and sbcl-1.4.4. Until then, however, it might be fairly common
3880 for maintenance releases to break binary compatibility.)
3881 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
3883 * The reporting of unhandled signals has been changed to print some
3884 explanatory text as well as the report form. (Previously only
3885 the report form was printed.)
3886 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
3887 it defines, so that the compiler no longer issues undefined function
3888 warnings for compiled-but-not-yet-loaded generic functions.
3889 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
3890 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
3891 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
3892 section of the ANSI spec are supported.
3893 * The "" nickname for the "KEYWORD" package has been removed.
3894 The reader still handles symbol tokens which begin with a package marker
3895 as keywords, but it doesn't expose its mechanism for doing so in the
3896 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
3897 * The system now issues STYLE-WARNINGs for contradictory TYPE
3898 proclamations. (Warnings for contradictory FTYPE proclamations would
3899 be nice too, but those can't be done usefully unless the type system
3900 is made smarter about FUNCTION types.)
3901 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
3902 systematized, so that "*target-*.lisp is supposed to exist only on the
3903 target and imply that there's a related file which exists on the
3904 host, and *host-*.lisp is supposed to exist only on the host and imply
3905 that there's a related file which exists on the target. This involves a
3906 lot of renaming. Hopefully the acute confusion caused by the renaming
3907 will be justified by the reduction in chronic confusion..
3908 ** runtime-type.lisp -> early-target-type.lisp
3909 ** target-type.lisp -> late-target-type.lisp
3910 ** early-host-format.lisp -> early-format.lisp
3911 ** late-host-format.lisp -> late-format.lisp
3912 ** host-error.lisp -> misc-error.lisp
3913 ** early-error.lisp -> early-target-error.lisp
3914 ** late-error.lisp -> late-target-error.lisp
3915 ** host-defboot.lisp -> early-defboot.lisp
3916 ** code/misc.lisp -> code/target-misc.lisp
3917 ** code/host-misc.lisp -> code/misc.lisp
3918 ** code/numbers.lisp -> code/target-numbers.lisp
3919 ** code/early-numbers.lisp -> numbers.lisp
3920 ** early-host-type.lisp -> early-type.lisp
3921 ** late-host-type.lisp -> late-type.lisp
3922 ** host-typep.lisp -> typep.lisp
3923 ** load.lisp -> target-load.lisp
3924 ** host-load.lisp -> load.lisp
3925 ** host-disassem.lisp -> disassem.lisp
3926 ** host-insts.lisp -> insts.lisp
3927 ** byte-comp.lisp -> target-byte-comp.lisp
3928 ** host-byte-comp.lisp -> byte-comp.lisp
3929 ** host-signal.lisp -> signal.lisp
3930 ** host-defstruct.lisp -> defstruct.lisp
3931 ** late-target-type.lisp -> deftypes-for-target.lisp
3932 Furthermore, several other previously target-only files foo.lisp (e.g.
3933 hash-table.lisp and random.lisp) have been split into a target-and-host
3934 foo.lisp file and a target-only target-foo.lisp file, with their key type
3935 definitions in the target-and-host part, so that the cross-compiler will
3936 know more about target types.
3937 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
3938 gone away. In their place are various *BACKEND-FOO* variables
3939 corresponding to the slots of the old structure.
3940 * A bug which caused the SB-COLD bootstrap-time package to be propagated
3941 into the target SBCL has been fixed.
3942 * The chill.lisp system for loading cold code into a running SBCL
3944 * Support for the CMU CL "scavenger hook" extension has been removed.
3945 (It was undocumented and unused in the CMU CL sources that SBCL was
3946 derived from, and stale in sbcl-0.6.1.)
3947 * Various errors in the cross-compiler type system were detected
3948 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
3949 (enabling various consistency checks). Many of them were fixed,
3950 but some hard problems remain, so the compiler is back to
3951 running without *TYPE-SYSTEM-INITIALIZED* for now.
3952 * As part of the cross-compiler type system cleanup, I implemented
3953 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
3954 * I have started adding UNCROSS calls throughout the type system
3955 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
3956 on cross-compiler input files will be able to go away, and various
3958 * CONSTANTP now returns true for quoted forms (as explicitly required
3961 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
3963 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
3964 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
3965 (MAKE-LIST -1). In the longer term, it ought to become true
3966 that declarations are assertions even at SAFETY 1. For now, it's not
3967 quite true even at SAFETY 3, but it's at least more nearly true..
3968 (Note that this change seems to increases the size of the system by
3969 O(5%) and to decrease the speed of the compiler by 20% or more.)
3970 * changed ALIEN printing to be much more abbreviated, as a short-term fix
3971 for the problem of printing dozens of lines of distracting information
3972 about low-level system machinery as part of the top stack frame
3973 on entry to the debugger when an undefined function was called.
3974 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
3975 is not reset to COMMON-LISP-USER.
3976 * Compilation of stuff related to dyncount.lisp has been made conditional
3977 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
3978 smaller. The various dyncount-related symbols have been moved into
3979 a new "SB-DYNCOUNT" package.
3980 * tty-inspect.lisp has been renamed to inspect.lisp.
3981 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
3982 feature has gone away. (When we eventually port to other flavors of
3983 libc and/or Unix, we'll try to make the differences between flavors
3984 invisible at the user level.)
3985 * Various other *FEATURES* tags, and/or their associated conditionals,
3986 have been removed if obsolescent, or given better documentation, or
3987 sometimes given more-mnemonic names.
3989 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
3991 * tidied up "make.sh" script
3992 * tidied up system directory structure
3993 * better "clean.sh" behavior
3994 * added doc/FOR-CMUCL-DEVELOPERS
3995 * many many small tweaks to output format, e.g. removing possibly-confusing
3996 trailing #\. character in DESCRIBE-INSTANCE
3997 * (EQUALP #\A 'A) no longer signals an error.
3998 * new hashing code, including EQUALP hashing
3999 * tidied up Lisp initialization and toplevel
4000 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
4001 * command line argument processing
4002 * added POSIX-GETENV function to deal with Unix-ish environment variables
4003 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
4004 terminating SBCL on EOF
4005 * non-verbose GC by default
4006 * There is no more "sbcl" shell script; the sbcl file is now the C
4007 runtime executable (just like CMU CL).
4008 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
4010 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
4011 symbol and package information as Lisp native symbol and package objects
4012 instead of strings naming symbols and strings naming packages. This way,
4013 whenever packages are renamed (as in warm init), debug information is
4014 transformed along with everything else.
4015 * tweaked the optimization policy declarations which control the building
4016 of SBCL itself. Now, among other things, the system no longer saves
4017 source location debugging information. (This helps two problems at once
4018 by reducing SBCL size and by keeping SBCL from trying to look for its
4019 sources -- which may not exist -- when reporting errors.)
4020 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
4021 debugging and testing purposes
4022 * cleaned up printing, making the printer call PRINT-OBJECT for
4023 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
4024 methods, giving nearly-ANSI behavior
4025 * converted almost all special variables to use *FOO* naming convention
4026 * deleted PARSE-TIME functionality, since it can be done portably
4027 * moved some files out of cold init into warm init
4028 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
4030 * regularized formatting of source files
4031 * added an install.sh script
4032 * fixed ridiculous memory usage of cross-compiler by making
4033 compiler/alloc.lisp not try to do pooling unless it can hook
4034 itself into the GC of the cross-compilation host. Now the system
4035 builds nicely on my old laptop.
4036 * added :SB-ALLOC in target-features.lisp-expr
4037 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
4038 was not implemented)
4039 * re-did condition handling and note reporting in the compiler. Notes
4040 are no longer handled by signalling conditions. Style warnings
4041 and warnings are handled more correctly and reported in such a way
4042 that it's easy to find one or the other in your output (so that you
4043 can e.g. figure out which of many problems caused COMPILE-FILE to
4045 * changed the severity of several compiler warnings from full WARNING
4046 to STYLE-WARNING in order to conform with the ANSI spec; also changed
4047 compiler note reporting so that it doesn't use the condition system
4048 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
4049 COMPILE-FILE command)
4050 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
4051 function. As a consequence, START-BLOCK and END-BLOCK declarations are
4052 no longer supported, since their implementation was deeply intertwingled
4053 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
4054 * removed bogus "support" for compiler macros named (SETF FOO), and
4055 removed the compiler macro for SETF INFO (but only after making a fool
4056 of myself on the cmucl-imp mailing list by posting a bogus patch for
4057 DEFINE-COMPILER-MACRO..)
4058 * Compiled files containing forms which have side effects on the Lisp
4059 reader (such as DEFPACKAGE forms) are now handled more correctly.
4060 (Compiler queuing of top level lambdas has been suppressed by setting
4061 *TOP-LEVEL-LAMBDA-MAX* to 0. )
4062 * deleted various currently-unused source files, e.g. gengc.lisp. They
4063 may be added back at some point e.g. when porting to other architectures,
4064 but until they are it's distracting to distribute them and to try to
4066 * deleted "UNCROSS couldn't recurse through.." style warnings, since
4067 there were so many of them they're just distractions, and UNCROSS is
4068 known to be able to handle the current sources
4069 * moved PROFILE functionality into TRACE, so that it will be clear
4070 how the wrapping and unwrapping of functions when you profile them
4071 interacts with the wrapping and unwrapping of functions when you
4072 trace them. (Actually, the functionality isn't there yet, but at least
4073 the interface specification is there. Hopefully, the functionality will
4074 arrive with some future maintenance release.)
4075 * removed host-oops.lisp
4076 * changed signature of QUIT function to allow UNIX-CODE argument
4077 * fixed READ-SEQUENCE bug
4078 * tweaked verbose GC output so that it looks more like the progress
4079 output that ANSI specifies for functions like LOAD
4080 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
4081 * added <http://sbcl.sourceforge.com> to the banner information printed by